GB1585010A – Ring binder mechanism for loose leaf files
– Google Patents
GB1585010A – Ring binder mechanism for loose leaf files
– Google Patents
Ring binder mechanism for loose leaf files
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Info
Publication number
GB1585010A
GB1585010A
GB2508878A
GB2508878A
GB1585010A
GB 1585010 A
GB1585010 A
GB 1585010A
GB 2508878 A
GB2508878 A
GB 2508878A
GB 2508878 A
GB2508878 A
GB 2508878A
GB 1585010 A
GB1585010 A
GB 1585010A
Authority
GB
United Kingdom
Prior art keywords
half ring
cover
cover bar
ring
flanges
Prior art date
1978-05-31
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
GB2508878A
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.)
Twinlock Ltd
Original Assignee
Twinlock 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.)
1978-05-31
Filing date
1978-05-31
Publication date
1981-02-18
1978-05-31
Application filed by Twinlock Ltd
filed
Critical
Twinlock Ltd
1978-05-31
Priority to GB2508878A
priority
Critical
patent/GB1585010A/en
1981-02-18
Publication of GB1585010A
publication
Critical
patent/GB1585010A/en
Status
Expired
legal-status
Critical
Current
Links
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Global Dossier
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Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
B42F13/00—Filing appliances with means for engaging perforations or slots
B42F13/16—Filing appliances with means for engaging perforations or slots with claws or rings
B42F13/20—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges
B42F13/22—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges in two sections engaging each other when closed
B42F13/24—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges in two sections engaging each other when closed wherein one section is in the form of fixed rods
Description
(54) RING BINDER MECHANISM FOR LOOSE LEAF FILES
(71) We, TWINLOCK LIMITED, a
British company of Twinlock Works,
Croydon Road, Beckenham, :Kent, BR3 4BH, 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:
The invention relates to ring binder mechanisms for loose leaf fiies.
Ring binder mechanisms have been previously proposed comprising a cover bar with downwardly and inwardly turned outer edges, a pair of pressure bars abutting against one another at their adjacent longitudinal edges and being supported at their outer longitudinal edges by the downwardly and inwardly turned edges of the cover bar, a plurality of half rings mounted on each pressure bar, each half ring on one pressure bar co-operating with a half ring on the other pressure bar to form therewith a closed loop, each pressure bar each having at its inner edge a plurality of projections to co-operate with the inner edge of the other pressure bar, and the pressure bars being so proportioned in width with respect to the cover bar that the co-operating half rings are movable with a snap action from cooperating closed positions to open positions and from their open positions to the cooperating closed positionS.
Where the half rings projected upwardly through apertures in the cover bar, there has been the disadvantage that perforated sheets of paper, mounted by said perforations on the half rings in a file or folder, had their longitudinal edges adjacent the perfor-ations overlying the cover bar whereas the remainder of the area of the sheets lay on the inside face of a rear cover of the file or folder positioned a significant distance below the upper surface of the cover bar. This caused the sheets of paper not to lie evenly and not to lie in exact register with subjacent or superposed sheets which is particularly disadvantageous if a sheet is to be written on with carbon paper therebeneath to form a copy since the original and the copy will not be in register, and is also disadvantageous if an indexing system is used for the sheets since misalignment of the sheet causes poor indexing.Various proposals have been put forward to avoid these disadvantages but none has been wholly satisfactory.
According to the invention, a ring binder mechanism for loose leaf papers comprises a cover bar having, except for securing portions at its ends, a generally uniform section throughout its length, said section comprising a central curved or flat portion, downwardly bent side flanges extending outwardly from the edges of said central portion and inwardly turned edge flanges at the outer edges of the side flanges; a pair of cooperating pressure bars with their inner edges abutting and their outer edges engaged with the inner face of the cover bar at the junction of the respective side and edge flanges thereof; and a plurality of pairs of co-operating half rings, one of the half rings ot each pair extending through one of the side flanges of the cover bar and being secured to one of said pressure bars and the other half ring of each pair being secured to the other one of the side flanges of the cover bar, said other half ring having a portion extending laterally outwardly from said other one of the side flanges of the cover bar and making an acute angle with a further straight portion of said other half ring, which further straight portion extends substantially to the free end of said other half ring, which free end co-operates, in the closed position of the half rings, with the free end of said one of the half rings.
Thus the portions of the sheets of paper to be bound by the binder located between the perforations in the sheets and the adjacent side edges can overlie said portion of said other half ring extending laterally outwardly from the cover bar i.e. it need not overlie the cover bar itself.
The further straight portion of said other half ring allows the sheets to extend in a stack with flat side edges whereby the sheets will be substantially in register with subjacent and superposed sheets.
In manufacture the end of said other half ring secured to said other side flange of the cover bar can be engaged in an aperture in said side flange and a portion thereof extending through the aperture riveted over, the downwardly and outwardly bent side flanges permitting a riveting head to be engaged within the cover bar to rivet over said portion.
When the co-operating half rings are opened only said one thereof which is connected to said one of the pressure bars, moves with respect to the cover bar, the other remaining stationary.
The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which:
Figure I is a plan view of a ring binder mechanism for binding loose leaves according to the invention; and
Figure 2 is a sectional view taken on line
II-II of Figure 1.
Referring to the drawings, a ring binder mechanism comprises a cover 1, a plurality of pairs of co-operating half rings 2 and 3, end portions 4 and 5 for the cover 1 with rivet holes 6 therein to enable the ring binder mechanism to be secured in a file or folder and a pair of over-centre pressure bars 7 and 8.
The cover bar 1 has a uniform section thoughout its length, said section comprising a central flat portion 9, side flanges 10 and 11 extending outwardly and downwardly from the side edges of the central portion 9.and inwardly turned edge flanges 12 and 13 at the outer edges of the side flanges 10 and 11 respectively.
The cover 1 is formed of spring steel material and the outer edges of the pressure bars 7 and 8 engage the inner face of the cover bar 1 at the angle formed by the junction of the side flanges 10, 11 with the respective edge flanges 12, 13. An aperture is provided for each half ring 2 in the side flange 10 and the lower end of each half ring 2 is enagaged in a respective aperture in the pressure plate 7 and riveted over on the underside to make it rigid therewith. The lower end of each half ring 3 is engaged in a respective aperture in the side flange 11 and has a portion projecting therethrough, said portion projecting therethrough being riveted over to make that half ring 3 rigid with the side flange 11 before the pressure plate 8 is engaged within the cover 1.
Each half ring 2 is of generally semicircular shape but each half ring 3 has a portion 14 extending laterally outwardly from the side flange 11 and in the embodiment shown slightly downwardly, the half ring 3 having an acute angle bend 15 at the outer end of the portion 14 leading to a second straight portion 16 which, apart from an inwardly turned portion 17 extends to the junction of the half ring 3 with the cooperating half ring 2. Papers mounted on the half ring 3 can thus lie relatively flat in the file or folder without wasted space therebeneath adjacent the cover 1.
WHAT WE CLAIM IS:
1. A ring binder mechanism for loose leaf papers comprises a cover bar having, except for securing portions at its ends, a generally uniform section throughout its length, said section comprising a central curved or flat portion, downwardly bent side flanges extending outwardly from the edges of said central portion and inwardly turned edge flanges at the outer edges of the side flanges; a pair of co-operating pressure bars with their inner edges abutting and their outer edges engaged with the inner face of the cover bar at the junction of the respective side and edge flanges thereof; and a plurality of pairs of co-operating half rings, one of the half rings of each pair extending through one of the side flanges of the cover bar and being secured to one of said pressure bars and the other half ring of each pair being secured to the other one of the side flanges of the cover bar, said other half ring having a portion extending laterally outwardly from said other one of the side flanges of the cover bar and making an acute angle with a further straight portion of said other half ring, which further straight portion extends substantially to the free end of said other half ring, which free end cooperates, in the closed position of the half rings, with the free end of said one of the half rings.
2. A ring binder mechanism for loose leaf papers substantially as hereinbefore described and illustrated with reference to the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (2)
**WARNING** start of CLMS field may overlap end of DESC **. side edges can overlie said portion of said other half ring extending laterally outwardly from the cover bar i.e. it need not overlie the cover bar itself. The further straight portion of said other half ring allows the sheets to extend in a stack with flat side edges whereby the sheets will be substantially in register with subjacent and superposed sheets. In manufacture the end of said other half ring secured to said other side flange of the cover bar can be engaged in an aperture in said side flange and a portion thereof extending through the aperture riveted over, the downwardly and outwardly bent side flanges permitting a riveting head to be engaged within the cover bar to rivet over said portion. When the co-operating half rings are opened only said one thereof which is connected to said one of the pressure bars, moves with respect to the cover bar, the other remaining stationary. The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which: Figure I is a plan view of a ring binder mechanism for binding loose leaves according to the invention; and Figure 2 is a sectional view taken on line II-II of Figure 1. Referring to the drawings, a ring binder mechanism comprises a cover 1, a plurality of pairs of co-operating half rings 2 and 3, end portions 4 and 5 for the cover 1 with rivet holes 6 therein to enable the ring binder mechanism to be secured in a file or folder and a pair of over-centre pressure bars 7 and 8. The cover bar 1 has a uniform section thoughout its length, said section comprising a central flat portion 9, side flanges 10 and 11 extending outwardly and downwardly from the side edges of the central portion 9.and inwardly turned edge flanges 12 and 13 at the outer edges of the side flanges 10 and 11 respectively. The cover 1 is formed of spring steel material and the outer edges of the pressure bars 7 and 8 engage the inner face of the cover bar 1 at the angle formed by the junction of the side flanges 10, 11 with the respective edge flanges 12, 13. An aperture is provided for each half ring 2 in the side flange 10 and the lower end of each half ring 2 is enagaged in a respective aperture in the pressure plate 7 and riveted over on the underside to make it rigid therewith. The lower end of each half ring 3 is engaged in a respective aperture in the side flange 11 and has a portion projecting therethrough, said portion projecting therethrough being riveted over to make that half ring 3 rigid with the side flange 11 before the pressure plate 8 is engaged within the cover 1. Each half ring 2 is of generally semicircular shape but each half ring 3 has a portion 14 extending laterally outwardly from the side flange 11 and in the embodiment shown slightly downwardly, the half ring 3 having an acute angle bend 15 at the outer end of the portion 14 leading to a second straight portion 16 which, apart from an inwardly turned portion 17 extends to the junction of the half ring 3 with the cooperating half ring 2. Papers mounted on the half ring 3 can thus lie relatively flat in the file or folder without wasted space therebeneath adjacent the cover 1. WHAT WE CLAIM IS:
1. A ring binder mechanism for loose leaf papers comprises a cover bar having, except for securing portions at its ends, a generally uniform section throughout its length, said section comprising a central curved or flat portion, downwardly bent side flanges extending outwardly from the edges of said central portion and inwardly turned edge flanges at the outer edges of the side flanges; a pair of co-operating pressure bars with their inner edges abutting and their outer edges engaged with the inner face of the cover bar at the junction of the respective side and edge flanges thereof; and a plurality of pairs of co-operating half rings, one of the half rings of each pair extending through one of the side flanges of the cover bar and being secured to one of said pressure bars and the other half ring of each pair being secured to the other one of the side flanges of the cover bar, said other half ring having a portion extending laterally outwardly from said other one of the side flanges of the cover bar and making an acute angle with a further straight portion of said other half ring, which further straight portion extends substantially to the free end of said other half ring, which free end cooperates, in the closed position of the half rings, with the free end of said one of the half rings.
2. A ring binder mechanism for loose leaf papers substantially as hereinbefore described and illustrated with reference to the accompanying drawings.
GB2508878A
1978-05-31
1978-05-31
Ring binder mechanism for loose leaf files
Expired
GB1585010A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB2508878A
GB1585010A
(en)
1978-05-31
1978-05-31
Ring binder mechanism for loose leaf files
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB2508878A
GB1585010A
(en)
1978-05-31
1978-05-31
Ring binder mechanism for loose leaf files
Publications (1)
Publication Number
Publication Date
GB1585010A
true
GB1585010A
(en)
1981-02-18
Family
ID=10222017
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2508878A
Expired
GB1585010A
(en)
1978-05-31
1978-05-31
Ring binder mechanism for loose leaf files
Country Status (1)
Country
Link
GB
(1)
GB1585010A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0962336A1
(en)
*
1998-06-05
1999-12-08
Leco Stationery Manufacturing Co. Ltd.
Device for retaining a stack of papers
1978
1978-05-31
GB
GB2508878A
patent/GB1585010A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0962336A1
(en)
*
1998-06-05
1999-12-08
Leco Stationery Manufacturing Co. Ltd.
Device for retaining a stack of papers
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Book
Legal Events
Date
Code
Title
Description
1981-05-20
PCNP
Patent ceased through non-payment of renewal fee
1981-07-08
PS
Patent sealed
1986-02-12
PCNP
Patent ceased through non-payment of renewal fee
