GB1565964A – Cooking appliances
– Google Patents
GB1565964A – Cooking appliances
– Google Patents
Cooking appliances
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Publication number
GB1565964A
GB1565964A
GB1997776A
GB1997776A
GB1565964A
GB 1565964 A
GB1565964 A
GB 1565964A
GB 1997776 A
GB1997776 A
GB 1997776A
GB 1997776 A
GB1997776 A
GB 1997776A
GB 1565964 A
GB1565964 A
GB 1565964A
Authority
GB
United Kingdom
Prior art keywords
hob
surround
raised
cover
flange
Prior art date
1977-08-11
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
GB1997776A
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.)
Belling and Co Ltd
Original Assignee
Belling and Co Ltd
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.)
1977-08-11
Filing date
1977-08-11
Publication date
1980-04-23
1977-08-11
Application filed by Belling and Co Ltd
filed
Critical
Belling and Co Ltd
1977-08-11
Priority to GB1997776A
priority
Critical
patent/GB1565964A/en
1980-04-23
Publication of GB1565964A
publication
Critical
patent/GB1565964A/en
Status
Expired
legal-status
Critical
Current
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Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24—HEATING; RANGES; VENTILATING
F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
F24C3/00—Stoves or ranges for gaseous fuels
F24C3/008—Ranges
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F24—HEATING; RANGES; VENTILATING
F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
F24C15/00—Details
F24C15/10—Tops, e.g. hot plates; Rings
F24C15/102—Tops, e.g. hot plates; Rings electrically heated
F24C15/103—Tops, e.g. hot plates; Rings electrically heated being movable or rotatable
Description
(54) IMPROVEMENTS IN COOKING APPLIANCES
(71) We, BELLING & COMPANY
LIMITED, a British Company, of Bridge
Works, Southbury Road, Enfield, Middlesex, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention is concerned with cooking
appliances and more particularly with such appliances having a cooking surface (hereinafter termed a hob) mounted in a surround and in which the hob can be raised to a working position or lowered to a stowed position by the raising or lowering of a cover.
In such appliances hitherto known, the movement of the hob has not been vertical, that is the major plane of the hob surface has not remained level. This creates movement of any spillage left on the hob. In known appliances, there may also be sideways movement of the hob with respect to the hob surround. There has been no positive locking system for preventing the hob being pushed down so that there has been a hazard of collapse under load in a particular area on the hob. Furthermore, slight movement of the lid can cause collapse of the system. Servicing of such appliances has been difficult in that the case, trims, lid, hob and linkages have been manufactured in such an integral manner that a complete strip down has been required before such parts can be exchanged. An object of the present invention is to eliminate or greatly reduce such disadvantages of known systems.
Broadly stated the invention provides a cooking appliance comprising a hob surround for fixing to a kitchen working surface or the like, a hob supported within the surround for movement between a raised working position and a lower stowed position with a cooking surface thereof maintained in a horizontal plane during travel between the working and stowed positions and having at a pair of opposed lateral edges downwardly directed flanges each formed with one or more cam slots, a cover pivoted to a normally rear edge of the hob surround and linked to actuating members slidable in the cam slots so that raising or lowering the cover moves the hob between its working and stowed positions, and guide means secured to the lateral edges of the hob and to the adjoining lateral edges of the surround permitting relative vertical movement between the hob and the surround while preventing relative movement in a direction parallel to said lateral edges.
Other preferred features of the invention will be apparent from the appended claims to which attention is hereby directed.
Several embodiments of the invention will now be described by way of example only with reference to the accompanying drawings, in which:
Figure 1 is a diagrammatic side view of a first cooking hob, a lateral wall of the hob surround being removed to show the hob lifting mechanism; Figures 2 and 2a are diagrammatic views of a locking mechanism for retaining the lid in the raised position;
Figure 3 is a side view of a second cooking hob with a lateral wall removed to show the hob lifting 10 mechanism;
Figure 4 is a side view of a third cooking hob also with a lateral wall removed, the lid being in the lowered position;
Figure 5 is a side view of the cooking hob shown in Figure 4 with the lid raised;
Figure 6 is a cross-section of a corner portion of the cooking hob shown in Figures 4 and 5.
In Figure 1 a cooking hob assembly comprises a rectangular hob 1 having a horizontally directed cooking surface bearing a plurality of electrical heating elements and an associated control panel, a rectangular surround for the hob having front and rear walls and a pair of side or lateral walls and being open at its base and a lid 6 pivotally fixed to the top edge of the rear wall of the surround. The hob has a pair of downwardly directed flanges 20 formed on its lateral edges and is mounted in a guide system provided at the lateral edges and comprising a vertical member 7 rigidly fixed to the downwardly directed end flange 20 of the hob and slideable within a respective vertical member 7′ fixed to an adjacent side wall of the surround for the hob.One of the members 7 and 7′ is made from a material having a low coefficient of friction to reduce friction between the members and facilitate movement of the hob. By this guide system the hob is contrained to move vertically with the cooking surface maintained in a horizontal plane.
A lever 2 is pivotally fixed at its lower end to the side wall of the surround and at its upper end slides in an elongated horizontal cam slot 22 in the flange 20. A link 5 is pivotally attached at one end to the upper end of the lever 2 and at its other end is pivotally attached to the free end of a crank arm 4 which is rigidly attached to a respective end of the lid 6 and extends normally therefrom. A spring 3 extends from an intermediate point on the lever 2 to a lower portion of a wall 21 opposite to that to which the lid 6 is pivoted.
When the lid 6 is in the lowered position the hob 1 is in its lower or stowed position and the upper end of the lever 2 is at the left hand end of the slot 22. When the lid 6 is raised to expose the working surface of the hob, rotation of the crank arm 4 is transmitted via the link 5 to the upper end of the lever 2 to rotate it clockwise (as viewed in Figure 1) along the slot 22 whereby the hob is raised to its operative position.
During its movement the guide members 7 and 7′ maintain the horizontal orientation of the working surface. The spring 3 biases the lever 2 towards the raised position and (a) helps to counteract the weight of the lid 6 while it is being raised, and also (b) provides force tending to retain the hob in its raised or working position. The lever 2 is positioned to be as near as possible to the centre of the hob when in the vertical position in order to give maximum support.
As appears in Figure 1 the slot 22 is extended rightwardly slightly beyond the vertical position of the lever 2 so that in travel to the operative position of the hob the lever 2 passes beyond its tdp dead centre position which arrangement also tends to retain the hob in its raised or operative position. A yet further feature which assists in retaining the hob in its raised position is a vertically directed spring clip 8 (Figures 2 and 2a) which when the lid is raised supports the crank arm 4 and provides positive location to the lid to prevent accidental collapse.The clip 8 also provides some frictional force on the side of the crank arm 4 tending to prevent collapse of the lid from angles up to 30 degrees from vertical. (In Figure 2 the solid lines represent crank arm 4 and lid 6 in the lowered position, and the chain dotted lines represent the raised position of the crank arm and lid).
The hob unit may be manufactured as a sub-assembly prior to insertion into its surround or case. The sub-assembled hob is fitted to the surround by engaging the guide members 7 and 7′ and connects the linkages 5 to their respective crank arms 4 and levers 2 after which a top trim is slid into position.
The lid 6 may comprise a frame to which is fixed inner and outer lid panels. The lid frame is first being fixed to pivots at the rear corners of the hob surround after which the inner and outer lid panels are fixed to the frame. In this way the finished parts such as the trim and the lid panels can easily be replaced, and the parts linking the hob to the surround are accessible for replacement through the open base of the hob surround.
In the arrangement shown in Figure 3, a hob 30 has downwardly directed lateral edge flanges 31 having a horizontally directed cam slot 32 terminating in an enlarged end portion 33. Levers 34 and 35 pivotally mounted at their lower ends on respective supports 36 and 37 fixed to the adjoining lateral wall of the hob surround at their upper ends rollers 38 and 39 slide ably engaging the cam slot 32. Intermediate positions of the levers 34 and 35 are pivotally interconnected by a rigid crosslink 40 which maintains them in a fixed substantially parallel angular relationship.
The upper end of the lever 38 is connected by means of a pivoted link member 41 to the free end of a crank lever 42 rigidly fixed to a lid 43 which is pivoted adjacent the top rear edge of the hob surround. A plate 44 fixed to the hob at its lateral edge has a vertically directed guide slot 45 terminating at its lower end in an enlarged portion 46. A guide roller 47 rigidly mounted to the adjoining lateral edge of the hob surround is slidably received in the slot 44 and allows the hob to move vertically between an upper or working position and a lower or stowed position but prevents relative sideways movement between the hob and the surround in a direction parallel to said lateral edges. In operation the levers 34 and 35 are actuated by the crank arm 42 and link 41 to raise or lower the hob in accordance with the position of the lid 43. Since (a) the slot 32 is horizontally directed, (b) the line of centres of the rollers 38 and 39 is also horizontal and (c) the levers 34 and 35 are maintained in a fixed angular relationship by means of the cross-link 40, the upper surface of the hob 30 is maintained horizontal. A spring 44′ fastened between an intermediate position on the lever 34 and a lower portion of the front wall of the hob surround helps to counteract the weight of the lid while is is being raised and helps to bias it into the raised position. When the lid
is fully raised, roller 39 engages the enlarged space 33 and the roller 47 engages the enlarged space 46 which help to maintain the hob in its operative position.
Referring to Figure 4 to 6, a hob 50 has at either lateral edge an elongate downwardly directed flange 51 which is in spaced parallel relationship with an upwardly directed flange 52 fixed to an adjoining lateral wall 53 of a hob surround. The fixed flange 52 has a pair of slots 54 and 55 which are arcuate, parallel to one another, spaced apart along a horizontal line and slope downwardly in the direction from front to rear of the hob. The hob flange 51 also has a pair of arcuate slots 56 and 57 which are in vertical alignment with the slots 54 and 55, are also parallel to one another, are spaced apart along a horizontal line and slope upwardly in the direction from front to rear of the hob.Rollers 58 and 59 are respectively slideably received in the slots 54 and 56 and in the slots 55 and 57 and are interconnected by rigid link 60. The flanges 51 and 52 are also formed with respective vertically directed guide slots 63 and 64 in which is received a guide roller 65 whereby relative vertical movement of the flanges 51 and 52 is allowed and relative movement in a direction parallel to the lateral edges is prevented. The link 60 has a downwardly directed lug 66 to which is fixed one end of a spring 67. The other end of the spring 67 is fixed to a lower lateral wall portion 68 of the knob surround.A lid 69 is pivoted to a top rear edge of the hob sur
round and carries at either end a crank arm
70 extending normally therefrom and
pivotally connected at its free end to one end
of a link 71 whose other end is connected to
the roller 59 more remote from the lid pivot.
When the lid 69 is lowered the hob 50 is in
a stowed position as seen in Figure 4, the
rollers 58 and 59 being at the left hand end of the arcuate slots 54, 55, 56 and 57 as viewed in Figures 4 and 5. When the lid is raised the crank arm 70 and connecting links 71 and 60 cause the rollers 58 and 59 to move together to the right hand end of the
arcuate slots. The roller 65 prevents relative movement between the flanges 51 and 52 parallel to the lateral edges of the hob and accordingly the rollers 58 and 59 exert a scissorlike action on the respective pairs of slots in which they slide to cause the flange 51 to move vertically upwardly until the hob has reached its operative position.The line between the centres of the rollers 58 and 59 is directed horizontally and they are maintained in horizontal alignment during travel of the working surface between its
raised and stowed positions by means of the rigid connecting link 60. As seen in
Figure 5, when the lid 69 is fully open the crank arm 70 and link 71 have reached an over-centre position which biasses the lid open. Furthermore the spring 67 also counteracts the weight of the lid during opening thereof and assists in biassing the lid open.
The flange plate 52 is preferably secured to the lateral wall of the hob surround 53 by means of screws 90 engaging vertical slots in the lateral wall of the hob. The screws 90
may be slackened off to permit adjustment of the vertical position of the flange 52 and hence of the working position of the hob 50. The provision for vertical adjustment of the working position is a significant advantage of this construction.
It will be appreciated that the invention is not restricted to the preferred forms described above which may be modified without departing from the invention, whose scope is defined in the appended
Claims (16)
claims. WHAT WE CLAIM IS:
1. A cooking appliance comprising a hob surround for fixing to a kitchen working surface or the like, a hob supported within the surround for movement between a raised working position and a lower stowed position with a cooking surface thereof maintained in a horizontal plane during travel between the working and stowed positions and having at a pair of opposed lateral edges downwardly directed flanges each formed with one or more cam slots, a cover pivoted to a normally rear edge of the hob surround and linked to actuating members slidable in the cam slots so that raising or lowering the cover moves the hob between its working and stowed positions, and guide means secured to the lateral edges of the hob and to the adjoining lateral edges of the surround permitting relative vertical movement between the hob and the surround while preventing relative movement in a direction parallel to said lateral edges.
2. An appliance according to Claim 1, wherein the guide means comprises a vertically directed member secured to a respective flange slideably received in a vertically directed member secured to a respective lateral edge of the hob surround.
3. An appliance according to Claim 1 or 2, wherein the flanges each have horizontally directed cam slots and a lever pivotally fixed at its lower end to wall of the hob surround with is upper end in sliding engagement with respective cam slot, the lever being actuated by a respective crank arm secured to the cover via a link pivoted at one end to the crank arm and at its other end to the upper end of the lever.
4. An appliance according to Claim 3, wherein the slot, the lever and the pivot point are dimensioned and positioned so that the upper end of the lever passes beyond a top dead centre position when the cover, is fully raised whereby the hob is biased towards its raised position.
5. An appliance according to Claim 3 or 4, wherein a spring fastened to the lever is arranged to bias it towards the raised position.
6. An appliance according to any of
Claims 2 to 5, wherein one of the vertically directed guide members is made from a material having a low coefficient of friction.
7. An appliance according to Claim 1, wherein the guide means comprises a guide plate having a vertically directed slot and a roller slide able in the slot and fixed against movement in a direction parallel to said lateral edges.
8. An appliance according to Claim 7, wherein the flanges each have horizontally directed cam slots and at each lateral edge is provided a pair of levers each pivoted at its lower end to the hob surround at a level below the respective cam slot and each having at its upper end a roller in sliding engagement with the respective cam slot, the pair of levers being interconnected by a pivoted crosslink and being actuated via a pivoted link member by a respective crank arm secured to the cover, the arrangement being such that the rollers travel along the slot between the lowered and the raised position of the hob with the line joining their pivot axes directed horizontally.
9. An appliance according to Claim 8, wherein the cam slot, the pair of levers and the pivot point are dimensioned -and positioned so that the rollers pass beyond a top dead centre position when the cover is fully raised whereby the hob is biased towards its raised position.
10. An appliance according to Claim 9, wherein the crank arm and the pivoted link members are also arranged to pass beyond a an over-centre position as the cover is fully raised.
11. An appliance according to Claim 1, wherein the lateral edges of the hob each have a downwardly directed flange in spaced parallel relationship with an upwardly directed flange fixed to a respective lateral wall of the hob surround, the guide means comprises aligned vertically directed slots in the hob flange and in the fixed flange through which a first roller passes, and a pair of spaced upwardly directed horizontally aligned cam slots in one flange is in vertical alignment with a corresponding pair of downwardly inclined cam slots in the other flange, a pair of rollers interconnected by a rigid link member each slidingly engage the aligned slots in the hob flange and in the fixed flange and a linkage connected between one of the rollers and the cover is operable to move the rollers along the slots when the cover is raised or lowered and so cause the hob flange to move vertically with respect to the fixed flange.
12. An appliance according to Claim 11, wherein the linkage comprises a crank arm pivotally connected to one end of a link member whose other end is pivotally connected to one of the rollers, the crank arm and link member being arranged to pass beyond an over-centre position as the cover is fully raised.
13. An appliance as claimed in Claims 11 or 12, wherein each fixed flange is vertically adjustable in position relative to the end wall of the hob for adjustment of the working position of the hob.
14. A cooking appliance comprising a hob surround for fixing to a kitchen working surface or the like and a hob supported within the surround for movement between a raised working position and a lower stowed position on raising or lowering of a pivoted cover, substantially as hereinbefore described with reference to, or as illustrated in, Figures 1, 2 and 2a of the accompanying drawings.
15. A cooking appliance comprising a hob surround for fixing to a kitchen working surface or the like and a hob supported within the surround for movement between a raised working position and a lower stowed position on raising or lowering of a pivoted cover, substantially as hereinbefore described with reference to, or as illustrated in Figure 3 of the accompanying drawings.
16. A cooking appliance comprising a hob surround for fixing to a kitchen working surface or the like and a hob supported within the surround for movement between a raised working position and a lower stowed position on raising or lowering of a pivoted cover, substantially as hereinbefore described with reference to, or as illustrated in Figures 4, 5 and 6 of the accompanying drawings.
GB1997776A
1977-08-11
1977-08-11
Cooking appliances
Expired
GB1565964A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB1997776A
GB1565964A
(en)
1977-08-11
1977-08-11
Cooking appliances
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB1997776A
GB1565964A
(en)
1977-08-11
1977-08-11
Cooking appliances
Publications (1)
Publication Number
Publication Date
GB1565964A
true
GB1565964A
(en)
1980-04-23
Family
ID=10138280
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1997776A
Expired
GB1565964A
(en)
1977-08-11
1977-08-11
Cooking appliances
Country Status (1)
Country
Link
GB
(1)
GB1565964A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2227087A
(en)
*
1989-01-13
1990-07-18
Cramer Gmbh & Co Kg
Built-in cooker
1977
1977-08-11
GB
GB1997776A
patent/GB1565964A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2227087A
(en)
*
1989-01-13
1990-07-18
Cramer Gmbh & Co Kg
Built-in cooker
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Legal Events
Date
Code
Title
Description
1980-07-09
PS
Patent sealed
1989-04-05
PCNP
Patent ceased through non-payment of renewal fee
