GB1564893A - Creation of Inventions and Patents with Artificial Intelligence

GB1564893A – Scrubbing brushes
– Google Patents

GB1564893A – Scrubbing brushes
– Google Patents
Scrubbing brushes

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Publication number
GB1564893A

GB1564893A
GB321078A
GB321078A
GB1564893A
GB 1564893 A
GB1564893 A
GB 1564893A
GB 321078 A
GB321078 A
GB 321078A
GB 321078 A
GB321078 A
GB 321078A
GB 1564893 A
GB1564893 A
GB 1564893A
Authority
GB
United Kingdom
Prior art keywords
brush
blank
bristle element
retaining member
scrubbing
Prior art date
1977-02-04
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Application number
GB321078A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1977-02-04
Filing date
1978-01-26
Publication date
1980-04-16

1978-01-26
Application filed by Individual
filed
Critical
Individual

1980-04-16
Publication of GB1564893A
publication
Critical
patent/GB1564893A/en

Status
Expired
legal-status
Critical
Current

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Classifications

A—HUMAN NECESSITIES

A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL

A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings

A47L11/40—Parts or details of machines not provided for in groups A47L11/02 – A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers

A47L11/4036—Parts or details of the surface treating tools

A—HUMAN NECESSITIES

A46—BRUSHWARE

A46B—BRUSHES

A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier

A46B3/18—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier the bristles being fixed on or between belts or wires

A—HUMAN NECESSITIES

A46—BRUSHWARE

A46D—MANUFACTURE OF BRUSHES

A46D1/00—Bristles; Selection of materials for bristles

A—HUMAN NECESSITIES

A46—BRUSHWARE

A46D—MANUFACTURE OF BRUSHES

A46D1/00—Bristles; Selection of materials for bristles

A46D1/04—Preparing bristles

A—HUMAN NECESSITIES

A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL

A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings

A47L11/02—Floor surfacing or polishing machines

A47L11/10—Floor surfacing or polishing machines motor-driven

A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools

A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes

A47L11/164—Parts or details of the brushing tools

A—HUMAN NECESSITIES

A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL

A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings

A47L11/40—Parts or details of machines not provided for in groups A47L11/02 – A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers

A47L11/4075—Handles; levers

A—HUMAN NECESSITIES

A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL

A47L17/00—Apparatus or implements used in manual washing or cleaning of crockery, table-ware, cooking-ware or the like

A47L17/04—Pan or pot cleaning utensils

A47L17/08—Pads; Balls of steel wool, wire, or plastic meshes

Description

(54) IMPROVEMENTS IN AND RELATiNG TO SCRUBBING-BRUSHES
(71) I, SHOZABURO SHIMIZU, a Japanese Subject, of 1 2-chome Kakomachi,
Nakamura-ku, Nagoya-shi, Japan, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a scrubbing-brush and process for the manufacture of the scrubbing-brush used to remove stains from flatwares or other articles.
In the past, brushes constructed in accordance with the following procedure have been extensively used. That is, a number of holes are made in a base plate formed of wood or plastic material, and a number of hairs or bristles are planted in the holes and secured by use of adhesives or by a mechanical procedure to form a brush.
Since the brush constructed in a manner as described tends to cause the bristles to fall out when the former is scrubbed hard against the surface of an article from which stain is removed, these brushes are only effectively used for using fields, which require less force, for example, in the case of brushing off dust from clothes or in the case of wiping off stains slightly adhered to flatwares.
Further, in the process for the manufacture as described above, the bristles must be planted into small holes, and as a consequence, fine work need be accomplished, and in addition, such a fine work must be applied to a number of holes, resulting in a requirement of much time.
According to the present invention, there is provided a brush blank comprising an elongate bristle element and a retain;ng member for disposition thereabout: said element being reversably axially tensioned thereby to reduce the transvese cross-section thereof, and the retaining member having an internal cross-section substantially equal to that of the reduced transverse cross-section of the element, and being disposed about said tensioned element.
The invention also includes a method for the production of a brush which comprises the steps of:
(a) axially tensioning an elongate bristle
element thereby to reversably reduce
the transverse cross-sectional area
thereof,
(b) disposing a retaining member having
an internal cross-section substan
tially equal to that of the reduced
cross-sectional area of the bristle
element, about said tensioned bristle
element, and
(c) causing said axial tension of said
bristle element to relax thereby tend
ing to crease the cross-sectional area
thereof;
whereby said retaining member
finally holds said bristle elements.
By this construction, “moulting” of the bristles can be substantially reduced when the brush is being used against the surface of an article to be washed, so as to always keep the bristle ends of the fibres in smooth and beautiful condition, and which can enhance the scrubbing effect as the scrubbing-brush by maintenance of such smoothness.
Furthermore, it has been found that the scrubbing-brush which can be used for a long period as the scrubbing-brush with a number of fibres orderly arranged without the occurrence of partial falling out of the fibres even when the brush is used for a long period.
In the process in accordance with the present invention it will be noted that it is possible, although not essential, to form a surface comprising bristle ends of a number of fibres in a finished scrubbing-brush in a smooth curved surface by a simple cutting operation using a flat cutter when a number of fibres are arranged and cut in a bundled state.
In accordance with the present invention even though a number of fibres as described above are bundled, the fibres may be bundled at an intermediate portion thereof in order to secure the entire bristle element and even if the bundling mode is loose, a firmly tightened mode may be achieved after having been formed into a brush according to the invention.
In the scrubbing-brush in accordance with the present invention, the retaining member may be a wire and, in the assembled brush, the fibres may be disposed to cover entirely the retaining member thus overcoming trouble resulting from erroneous contact of the retaining member with the article to be washed to give a damage thereto when the finished scrubbing-brush is used.
Following is a description by way of example only and with reference to the accompanying drawings of methods of carrying the invention into effect.
In the drawings: Figure 1 is a longitudinal sectional view showing a plurality of elongate fibre nets;
Figure 2 is a view with a number of fibre nets axially displaced with one another in order to show a superposed state of the plurality of elongation nettings;
Figure 3 is a longitudinal sectional view of a bundle of nets;
Figure 4 is a view showing a bundled state;
Figure 5 is a view showing a state with the bundle cut;
Figure 6 is a view showing a hot water bath;
Figure 7 is a perspective view of a finished scrubbing-brush;
Figure 8 is a plan view of the scrubbingbrush;
Figure 9 is a partly enlarged view of the scrubbing-brush;
Figure 10 is a longitudinal sectional view of the scrubbing-brush;
Figure 11 is a schematic illustration showing change in dimension when a scrubbingbrush element is deformed into the scrubbing-brush;
Figure 12 is a comparison view showing a state of deformation of the elongate fibre netting;
Figure 13 and Figure 14 are respectively views showing a modified form of the process of the manufacture;
Figure 13 being a view showing a plurality of elongate fibre nets and Figure 14 a view showing a state in which a plurality of elongate fibre nets are bundles; and
Figures 15 to 17 are respectively views showing the process for manufacturing scrubbing-brushes different in configuration.
Figures 1 to 12 illustrate in detail the process of manufacture for scrubbing-brushes, the manufactured scrubbing-brushes, and elongate fibre nets used to manufacture the scrubbing-brushes. The process of manufacture for scrubbing-brushes will be hereinafter described in order. First, there are provided with a plurality of elongate fibre nets 10, 10, . . as shown in Figure 1 which form the bristles. The detailed construction of these elongate nets 10 is shown in
Figure 12(A). That is, in Figure 12(A), a number of fibres 11, 11, . are disposed in intersection relationship with one another, the fibres being integrated with one another at intersections thereof. This netting is obtained by being subjected to injection moulding of thermoplastic resin such as polyethylene and polypropylene into a netlike configuration, introducing the thus moulded netting into an elongation tank at a given temperature, and exerting a tension thereto in a direction as indicated at 13 for elongation to form it into a configuration as shown in Figure 12(A). Therefore, this netting, in its state thus moulded, has a residual stress strain so that when heat is again applied thereto in a free condition, the netting will contract and deform in the lengthwise elongated direction and will expand diametrically of the fibre bundle, due to the aforesaid residual stress strain. The above-mentioned elongate fibre nets 10, which are constructed in a manner as described above, include those formed into a long cylindrical configuration in an elongate direction or those formed into a sheet by cutting open the aforesaid cylindrical formation.
Next, these nettings 10 are placed one above another to form a single multi-layer netting successively superposing a second cylindrical netting 10 on an external surface of a first cylindrical netting 10, and superposing a third cylindrical netting 10 on an external surface of the second cylindrical netting 10, as illustrated in Figure 2.
By placing these nettings one above another as described above, a bundle 16 of nettings having a section as shown in Figure 3 may be forrned. While the number of nettings placed one above another and the diameter of the bundle 16 will be variously varied depending on kind and size of bundles to be manufactured, it will be noted as one example that a bundle 16, of which diameter is 5 cm to 6 cm in a state where 60 to 70 sheets of nettings are placed one above another and then slightly tightened, may be formed. In such a bundle 16, a number of nettings 10, 10 are placed one above another so that the respective nettings are substantially in concentric relationship. Accordingly, where different colours are used for these nettings, these nettings are superposed in the form of an annular ring to provide a colourful external appearance.
Next, the bundle may be bundled by bundling members 18 as shown in Figure 4.
This bundling may be effected by bundling the bundle 16 using the bundling members 18 of a given length and inter-twisting opposite ends of the bundling members 18.
Taking into consideration of uses of finished scrubbing-brushes, the retaining or bundling members 18 are selected so that for example, where the scrubbing-brushes are to be used in water, the bundling members 18 used are rust-proofed. For example a bundling member may be formed such that its outer surface which is of a metal wire is coated with a plastics material or covered with a plastic tube.
Further, a ring formed of a plastic material may also be used. This bundling may be made tightly to the extent that the bundling members 18 are not easily moved axially along the length of the bundle 16, and the strength of bundling may suitably be increased or decreased accordingly. Spacings between a number of bundling members 18, 18 may be variously determined depending on the size of the scrubbingbrushes to be manufactured or the length of fibres constituting a scrubbing-brush. In one example, where the diameter of the bundle 16 is as previously mentioned, the spacing may be set at from 6 to 8 cm.
The bundle 16 is then cut to a given dimension at opposite ends thereof with the bundling member 18 located intermediately therebetween so as to form a scrubbingbrush blank. This cutting may be effected by a known cutter of simple construction.
This cutting step is shown in Figure 5.
The decision of positions at which such a cutting is to take place, i.e. the decision of distance L, from the bundling member 18 to an end 21 in the scrubbing-brush blank 20 and of distance L, from the bundling member 18 to an end 22 will be apparent from an ensuing description. It is also possible to exchange the order of these processes, namely, the process of bundling and the process of cutting.
The thus formed scrubbing-brush blank 20 is next subjected to the process of heating. One means of such heating process used is a hot water means as shown in
Figure 6. That is, the scrubbing-brush blank 20 is immersed in hot water within a hot water tank 24, as shown in Figure 6.
A number of nettings 11 in the scrubbingbrush blank 20 immersed in the hot water bath as described are deformed as shown in
Figure 11 into a scrubbing-brush 28 having a configuration as shown in Figure 7. Such a deformation occurs for the following reasons. Since the elongate netting 10 is formed by the elongation of a netting composed of a number of fibres as described previously in a direction of arrow 13 as indicated in Figure 12(A), when an external stimulus like heat from the hot water 26 is exerted upon the netting 10, the number of fibres 11 and the residual stress strain due to the elongation in the direction as indicated at arrow 13 in the intersections 12 of the fibres are returned to their original state, as a consequence of which the fibers 11 as shown in Figure 12(B) contracts lengthwise and become slightly larger in diameter, whereas the intersections 12 contract in the direction of the arrow 30 and at the same time expand in the direction of the arrow 32, thus returning to a netting 1 0a in a non-elongate state. Accordingly, in the scrubbing-brush blank 20, a number of nettings 10 are placed one above another and a number of intersections 12 are close to one another so that when each intersection 12 is widened in the direction of the arrow 32 as previously mentioned due to the hot water bath, the nettings 10 in the scrubbing-brush blank 20 tend to be widened toward the width as a whole. However, the scrubbing-brush blank 20 is tied at its intermediate portion by the retaining or bundling member 18, and hence, it cannot be widened at said portion as a whole.
For this reason, apparently, the scrubbingbrush blank is appeared to be widened as a whole at portions other than those bundled by the bundling members 18, the number of nettings 10 may be widened in the direction of the arrow 34 as shown in Figure 11 and thus a scrubbing-brush 28 having a configuration as shown in Figures 7 to 10 may be formed. In this case, it will be noted in a bundled portion by means of the bundling member 18, the fibres 11 themselves become greater in diameter and the intersections 12 also become greater in diameter so that even if the bundling member is loosely tied as previously mentioned, the scrubbingbrush blank assumes a state where the former is closely entered inside of the annular bundling member 18, that is to say, a state where the bundling member 18 is firmly tied. The temperature of hot water 26 in the case of the hot water bath as described above is determined depending on emergence of properties in which the residual stress strain in the netting 10 is to be restored. It is therefore necessary to vary the temperatures depending on the material used for the netting. In the case of the illustrated embodiment, hot water at a temperature, for example, from 90″ to 100 C, is used. It should be noted that time for the hot water bath is also similarly determined. In the illustrated embodiment, time selected is for example, from about 15 seconds to about 100 seconds.
Other means employed in this process of heating include a means wherein a scrubbing-brush blank is passed through a known heating tunnel in the periphery of which is disposed a heating source such as a heater, or a means wherein a scrubbingbrush blank is charged into a container, into which high temperature and high pressure vapour or air is blown to heat the scrubbing-brush blank. In this case, the heating temperature may be suitably selected, for example, between 90″C and 150″C.
The thus formed scrubbing-brush 28 may be bundled by differently taking distances L1 and L2 from the bundled portion to ends 21 and 22, respectively to thereby obtain scrubbing-brush elements 36 and 38 whose cut surfaces 36′ and 38′ are different in size.
In the case of the illustrated embodiment, since the aforementioned distances L1 and
L2 are 3 cm and 4 cm, respectively, the density of the fibres 11 in the cut surface 36′ of the scrubbing-brush element 36 is greater than that of the cut surface 38′ in the scrubbing-brush element 38 so that the scrubbing-brush element 36 is harder than the scrubbing-brush element 38. It will be noted that the density of the fibres 11 in the cut surfaces of these scrubbing-brush elements may suitably be varied by suitable selection of the rate of the diameter of the bundle 16 in the scrubbing-brush blank 20 to the distance from the bundled portion to the end or the strength of bundling by means of the bundling member 18, or the kind of netting 10. That is, if the length
of the fibres is made greater than the diameter of the bundle 16, if the bundling is
made less strengthened or if a soft netting is used, a soft scrubbing-brush may be obtained, and in the case conversely thereof, a hard scrubbing-brush may be obtained.
Since the thus formed scrubbing-brush 28 uses nettings with a number of fibres 11 connected with one another, even when an article to be cleaned such as a flatware, from which stain is removed, is scrubbed hard with the scrubbing-brush 28, there is no possibility of displacing any specific fibre.
Further, since this scrubbing-brush is provided on one surface thereof with a hard scrubbing-brush element 36 and on the other surface thereof with a soft scrubbing-brush element, the scrubbing-brush can be used even in the case of briskly scrubbing-off stains adhered to the article to be cleaned and also in the case of softly wiping-off stains lightly adhered thereto. Moreover, since the scrubbing-brush 28 is heated to sufficiently remove a residual strain from the netting as previously mentioned, there occurs no deformation even if the brush is immersed in hot water during the use thereof.
In addition, when the scrubbing-brush 28 is manufactured by the use of nettings different in colour, it assumes an annual ring as described above so that the scrubbingbrush is beautiful in the sense of sight.
In the following, a description will be given with reference to Figures 13 and 14, which illustrate modified forms of means for forming a bundle of nettings in the process of manufacture according to the abovementioned embodiments. The process will be described hereinafter. First, a number of elongate nettings 10, 10 similar to the case in the previous embodiment are prepared as shown in Figure 13. Next, these nettings are arranged in parallel as shown in Figure 14 into a single bundle 50, which is then bundled by the bundling members 18 in a manner similar to the case in the previous embodiment. Thereafter, the processes of cutting and heating may be accomplished in a manner similar to the case in the previous embodiment to thereby form a scrubbing-brush of the shape similar to that as described in the previous embodiment. It will be noted that the thus manufactured scrubbing-brush may be formed into a scrubbing-brush having a spot pattern by mixing a number of nettings as material of different colours.
Next, a description will be given with reference to Figures 15 to 17, which illustrate the process of manufacturing a scrubbing-brush with a handle in accordance with means similar to the embodiments previously described. A bundling member 60 is slipped on a bundle of elongate nettings 10 made in accordance with means similar to the abovementioned embodiments, and the bundle is cut in a given dimension to form a scrubbing-brush blank 62 as shown in Figure 15. This bundling member 60 is manufactured by bending a somewhat large diameter and rigid wire into an elongate
U-shape configuration, free ends 60a of which are inwardly bent as shown. Even if the bundle is bundled by the U-shaped bundling member 60, a sectional shape of the bundle may be freely deformed depending on the shape of the bundling member 60 because the bundle comprises nettings of small diameter fibres arranged as previously mentioned. Then, a handle 64 formed of a suitable material such as plastic, wood, metal and the like as shown in
Figure 16, is attached to the bundling member 60. This attachment of the handle 64 to the bundling member may be accomplished by a procedure, which is well-known, in which both the free ends 60a and 60a of the bundling member 60 are placed close to each other and then inserted into recesses formed in one end of the handle 64, after which the bundling member may be secured by stop means such as rivet or screw. Other suitable procedures may also be employed. Thereafter, a scrubbingbrush 62 with a handle 64 attached thereto is subjected to heating in a manner similar to the abovementioned embodiments to form a finished scrubbing-brush 68 having a scrubbing-brush element 70 whose featherforemost surfaces of a number of nettings are in the form of a smooth curved surface.
Since the scrubbing-brush 68 with a handle shaped as described above has the elongated scrubbing-brush element 70, it is suitable for washing the internal surface of an article such as a glass of which mouth is narrow and its depth is deep. In this case, since the bundling member 60 is formed of a rigid material as previously described, the scrubbing element 70 is never bent during the use.
WHAT I CLAIM IS: – 1. A brush blank comprising an elongate bristle element and a retaining member for disposition thereabout; said element being reversibly axially tensioned thereby to reduce the transverse cross-section thereof, and the retaining member having an internal cross-section substantially equal to that of the reduced transverse cross-section of the element, and being disposed about said tensioned element.
2. A blank according to claim 1 comprising a plurality of spaced retaining members.
3. A blank according to either of claims 1 or 2 wherein said element is formed of a plurality of net-like sub-elements of a plastics material.
4. A blank according to claim 3 wherein said net-like sub-elements are of a substantially cylindrical form, and are disposed concentrically to form a bristle element.
5. A blank according to claim 3 wherein said net-like sub-elements are substantially planar in form and are disposed in a parallel configuration to form a bristle element.
6. A blank according to any one of the preceding claims wherein a portion of said retaining member is constituted by a handle for a brush formed from said blank.
7. A blank according to any preceding claim wherein said bristle element is severed on either side of said retaining member.
8. A blank according to any preceding claim wherein said retaining member is a metal band with a plastics covering.
9. A brush blank substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
10. A brush formed from the brush blank of any one of claims 1 to 9 by treatment of the bristle element to cause a relaxation of said tension and a consequent increase in the transverse cross-section of said element; whereby the bristle element is held firmly by the retaining member.
11. A brush according to claim 10 wherein said brush blank is heat treated for a time and at a temperature sufficient to cause said increase in transverse cross-section of the bristle element.
12. A brush according to claim 11 wherein said brush blank is immersed in water at 90″ to 100 C.
13. A brush according to claim 11 wherein said brush blank is subjected to treatment with hot air at 900 to 1500C.
14. A brush according to any one of claims 10 to 13 wherein the length of the portion of the bristle element protruding on one side of the retaining member is in excess of that protruding on the other side of the protruding member, thereby to form bristle element portions which, in use, have different apparent hardnesses.
15. A brush according to any one of claims 10 to 14 comprising a bristle element formed of a plurality of net-like subelements, a proportion of said net-like subelements being formed of a plastics material different from that of the sub-elements.
16. A brush substantially as hereinbefore set forth and as illustrated in and with reference to, the accompanying drawings.
17. A method for the production of a brush which comprises the steps of:- (a) axially tensioning an elongate bristle
element thereby to reversably reduce
the transverse cross-sectional area
thereof,
(b) disposing a retaining member having
an internal cross-section substantially
equal to that of the reduced cross
sectional area of the bristle element,
about said tensioned bristle element,
and
(c) causing said axial tension of said
bristle element to relax thereby tend
ing to increase the cross-sectional
area thereof;
whereby said retaining member
finally holds said bristle elements.
18. A method according to claim 17 wherein a plurality of spaced retaining members are disposed about said bristle element at step (b).
19. A method according to either of claims 17 or 18 wherein the bristle element of step (a) is formed of a plurality of netlike sub-elements of a plastics material.
20. A method according to claim 19 wherein the net-like sub-elements are of a substantially cylindrical form and are disposed concentrically to form a bristle element.
21. A method according to claim 19 wherein the net-like sub-elements are of a substantially planar form and are disposed in a parallel configuration to form a bristle element.
22. A method according to any one of claims 17 to 21 wherein the retaining member is constituted in part by a handle for the brush.
23. A method according to any one of claims 17 to 22 wherein the bristle element is severed on either side of said retaining member subsequent to step (b) but prior to step (c).
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (30)

**WARNING** start of CLMS field may overlap end of DESC **. Since the scrubbing-brush 68 with a handle shaped as described above has the elongated scrubbing-brush element 70, it is suitable for washing the internal surface of an article such as a glass of which mouth is narrow and its depth is deep. In this case, since the bundling member 60 is formed of a rigid material as previously described, the scrubbing element 70 is never bent during the use. WHAT I CLAIM IS: –

1. A brush blank comprising an elongate bristle element and a retaining member for disposition thereabout; said element being reversibly axially tensioned thereby to reduce the transverse cross-section thereof, and the retaining member having an internal cross-section substantially equal to that of the reduced transverse cross-section of the element, and being disposed about said tensioned element.

2. A blank according to claim 1 comprising a plurality of spaced retaining members.

3. A blank according to either of claims 1 or 2 wherein said element is formed of a plurality of net-like sub-elements of a plastics material.

4. A blank according to claim 3 wherein said net-like sub-elements are of a substantially cylindrical form, and are disposed concentrically to form a bristle element.

5. A blank according to claim 3 wherein said net-like sub-elements are substantially planar in form and are disposed in a parallel configuration to form a bristle element.

6. A blank according to any one of the preceding claims wherein a portion of said retaining member is constituted by a handle for a brush formed from said blank.

7. A blank according to any preceding claim wherein said bristle element is severed on either side of said retaining member.

8. A blank according to any preceding claim wherein said retaining member is a metal band with a plastics covering.

9. A brush blank substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.

10. A brush formed from the brush blank of any one of claims 1 to 9 by treatment of the bristle element to cause a relaxation of said tension and a consequent increase in the transverse cross-section of said element; whereby the bristle element is held firmly by the retaining member.

11. A brush according to claim 10 wherein said brush blank is heat treated for a time and at a temperature sufficient to cause said increase in transverse cross-section of the bristle element.

12. A brush according to claim 11 wherein said brush blank is immersed in water at 90″ to 100 C.

13. A brush according to claim 11 wherein said brush blank is subjected to treatment with hot air at 900 to 1500C.

14. A brush according to any one of claims 10 to 13 wherein the length of the portion of the bristle element protruding on one side of the retaining member is in excess of that protruding on the other side of the protruding member, thereby to form bristle element portions which, in use, have different apparent hardnesses.

15. A brush according to any one of claims 10 to 14 comprising a bristle element formed of a plurality of net-like subelements, a proportion of said net-like subelements being formed of a plastics material different from that of the sub-elements.

16. A brush substantially as hereinbefore set forth and as illustrated in and with reference to, the accompanying drawings.

17. A method for the production of a brush which comprises the steps of:- (a) axially tensioning an elongate bristle
element thereby to reversably reduce
the transverse cross-sectional area
thereof,
(b) disposing a retaining member having
an internal cross-section substantially
equal to that of the reduced cross
sectional area of the bristle element,
about said tensioned bristle element,
and
(c) causing said axial tension of said
bristle element to relax thereby tend
ing to increase the cross-sectional
area thereof;
whereby said retaining member
finally holds said bristle elements.

18. A method according to claim 17 wherein a plurality of spaced retaining members are disposed about said bristle element at step (b).

19. A method according to either of claims 17 or 18 wherein the bristle element of step (a) is formed of a plurality of netlike sub-elements of a plastics material.

20. A method according to claim 19 wherein the net-like sub-elements are of a substantially cylindrical form and are disposed concentrically to form a bristle element.

21. A method according to claim 19 wherein the net-like sub-elements are of a substantially planar form and are disposed in a parallel configuration to form a bristle element.

22. A method according to any one of claims 17 to 21 wherein the retaining member is constituted in part by a handle for the brush.

23. A method according to any one of claims 17 to 22 wherein the bristle element is severed on either side of said retaining member subsequent to step (b) but prior to step (c).

24. A method according to any one of
claims 17 to 23 wherein the retaining member is a metal band with a plastics covering.

25. A method according to any one of claims 17 to 24 wherein step (c) is effected by heat treatment for a time and at a temperature sufficient to cause said increase in cross-sectional area.

26. A method according to claim 25 wherein the brush blank is immersed in water at 90″ to 100″C.

27. A method according to claim 25 wherein the brush blank is subjected to treatment with hot air at 90″ to 1500C.

28. A method according to claim 23 wherein the bristle element is so severed that the length of the portion thereof protruding on one side of the retaining member is in excess of that protruding on the other side of the retaining member, thereby to form bristle element portions which, in use, have different apparent hardnesses.

29. A method substantially as hereinbefore set forth with reference to and as illustrated in the accompanying drawings.

30. A scrubbing-brush whenever produced by the method of any one of claims 17 to 29.

GB321078A
1977-02-04
1978-01-26
Scrubbing brushes

Expired

GB1564893A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

JP52011821A

JPS5820624B2
(en)

1977-02-04
1977-02-04

Bunko and bunko manufacturing method

Publications (1)

Publication Number
Publication Date

GB1564893A
true

GB1564893A
(en)

1980-04-16

Family
ID=11788435
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB321078A
Expired

GB1564893A
(en)

1977-02-04
1978-01-26
Scrubbing brushes

Country Status (3)

Country
Link

JP
(1)

JPS5820624B2
(en)

ES
(1)

ES243080Y
(en)

GB
(1)

GB1564893A
(en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS6080755U
(en)

1983-11-09
1985-06-05
清水　正三郎

Bunko

Family Cites Families (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS4976339A
(en)

1972-11-27
1974-07-23

1977

1977-02-04
JP
JP52011821A
patent/JPS5820624B2/en
not_active
Expired

1978

1978-01-26
GB
GB321078A
patent/GB1564893A/en
not_active
Expired

1978-02-01
ES
ES1978243080U
patent/ES243080Y/en
not_active
Expired

Also Published As

Publication number
Publication date

JPS5397262A
(en)

1978-08-25

JPS5820624B2
(en)

1983-04-23

ES243080U
(en)

1979-09-01

ES243080Y
(en)

1980-04-01

Contact information