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US3566927A - Bookbinding - Google Patents

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Publication number
US3566927A
US3566927A US3566927DA US3566927A US 3566927 A US3566927 A US 3566927A US 3566927D A US3566927D A US 3566927DA US 3566927 A US3566927 A US 3566927A
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US
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Grant
Patent type
Prior art keywords
strip
means
prongs
zigzag
apparatus
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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 - Lifetime
Application number
Inventor
Sidney George William Adams
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.)
JAMES BURN INTERNATIONAL Ltd DOUGLAS ROAD ESHER SURRY KT10 8BD ENGLAND A BRITISH Co
JAMES BURN AND CO Ltd
Original Assignee
JAMES BURN AND CO Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42BPERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES OR PERMANENTLY ATTACHING OBJECTS THERETO
    • B42B5/00Permanently attaching together sheets, quires or signatures otherwise than by stitching
    • B42B5/08Permanently attaching together sheets, quires or signatures otherwise than by stitching by finger, claw or ring-like elements passing through the sheets, quires or signatures
    • B42B5/10Permanently attaching together sheets, quires or signatures otherwise than by stitching by finger, claw or ring-like elements passing through the sheets, quires or signatures the elements being of castellated or comb-like form
    • B42B5/103Devices for assembling the elements with the stack of sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F45/00Wire-working in the manufacture of other particular articles
    • B21F45/16Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes

Abstract

A method for the conversion of strips of zigzag wire into a tubular form suitable for binding perforated sheets, comprising feeding the strip over an anvil in a step-by-step fashion, and clamping the strip whilst it is stationary so that the edges can be bent over the anvil by strikers situated on either side of the anvil.

Description

United States Patent Sidney George William Adams Hersham, England Dec. 6, 1968 Mar. 2, 1971 James Burn & Co. Ltd. Surrey, England Dec. 15, 1967 Great Britain Inventor App]. N 0. Filed Patented Assignee Priority BOOKBINDING 13 Claims, 12 Drawing Figs.

U.S. Cl 140/71, 140/82, 72/191 Int. Cl B211 45/00 Field of Search 140/71, 82; 11/l;72/187, 191

[56] References Cited UNITED STATES PATENTS 2,190,722 2/1940 Martin 140/82 2,832,392 4/1958 Spitz 140/71 2,868,236 1/1959 Smith 140/71 2,874,731 2/1959 Smith 140/71 3,451,081 6/1969 Liouville 1 l/ 1 Primary Examiner-Lowell A. Larson Attorney-Dowell & Dowell ABSTRACT: A method for the conversion of strips of zigzag wire into a tubular form suitable for binding perforated sheets, comprising feeding the strip over an anvil in a step-by-step fashion, and clamping the strip whilst it is stationary so that the edges can be bent over the anvil by strikers situated on either side of the anvil.

PATENTED HAR 219m SHEET 1 OF 6 MW M3321,

PATENTED m 2|9n SHEET 2 OF 6 lnve l r PATENTED MAR 2 [WI I SHEET *4 OF 6 PATENTED HAR 2m: 3566;927

SJM B 0 WW PATENTEDHAR 21971 3566927 SHEET 6 BF 6 BOOKBINDING its wall the final step in the binding process is to close the slot by brining the closed ends of the prongs into their open ends.

The invention is concerned with the manufacture of the binding elements in the form in which they exist at the binding or sheet impaling stage, i.e., in the slotted tube form.

In the manufacture of such elements, it is usual for a length of wire first of all t be converted to the so-called zigzag form in which it assumes the shape of a flat comb of indefinite length the prongs of which are closed at their tips and open at their bases ro roots where they are connected to their neighbors by aligned lengths of wire forming the stock or spine of the comb so that the pitch of the prongs corresponds to the pitch of the perforations in the sheetsjto be bound. A long length of such flat zigzag material is then brought to the slotted tube form by suitable bending of'the prongs.

The closed ends of the prongs will be referred to herein as the *tips" of the prongs and the lengths of wire separating successive prongs will be referred to as the roots" of the prongs.

According to the invention, the conversion from the zigzag to the slotted tube condition is effected by feeding the wire over an anvil in a step-by-step fashion, and, while the strip is held stationary, clamping it so that the tips and roots of the prongs overhang the anvil striking the overhanging portion of each prong to cause it to conform to a shape determined by I the anvil.

The bending can be effected in a single stage by using one striker, or in several stages, which is preferred, by using a number of strikers or hammers. In the latter case, the first striker bends the prongs near their ends and the second at a point closer to the clamp and so on.

The intermittent feed can be effected in various ways as, for example, by means of a ratchet mechanism or other mechanism having a reciprocating or oscillating motion. It is, however, much preferable to use for the feeding of the strip a continuously rotated mechanism and, in particular, a rotary indexing wheel having a helical groove or scroll in which the tips and roots of the prongs are engaged and which has straight" portions, i.e., portions lying in planes at right angles to the axis of the wheel which maintain the strip at rest at the instant at which a prong is to be acted on by a hammer or hammers, the later being carried by the wheel.

The final bending operation to close the binder after the sheets to be bound have been impaled on its prongs if facilitated if the prongs are provided midway along their length with a kink which acts as a hinge. Such a kink can very conveniently be provided as a result of the clamping of the teeth of the zigzag strip while these are being shaped or formed by the strikers or hammers.

The invention will now be explained in greater detail with reference to the accompanying drawings which are given by way of example.

FIG. 1 shows a length of zigzag strips;

FIG. 2 shows a length of the slotted tube;

FIG. 3 is a plan view of a machine in accordance with the invention;

FIG. 4 is a side elevation of the machine shown in FIG. 3;

FIG 5 shows one convolution of a scroll of the machine of FIG. 3;

FIGS. 6 to 9 are sections taken through FIG. 3 at VI to IX respectively and show the steps of converting the zigzag strip to a slotted tubular form; and

FIGS. 6A, 6B, and 6C show three examples of hammers or strikers which can be used.

The strip 10 shown in FIG. 1 is comblike, having prongs 14 closed at their tips 16 and open at their roots 18 where they are connected by lengths of wire 20. In the condition of use illustrated in FIG. 2, the prongs 10 have been curved so that perforated sheets can be impaled. That operation having been performed, the binding completed by bringing the tips 16 of the prongs into their roots or open ends 18, which is facilitated by a kink 24 in each prong.

Referring to FIGS. 3 onwards the machine has a feed table 26 on which the zigzag strip 10 is longitudinally fed. It is thus presented to a pair of stepped rollers 28, 30.

As will be seen, the stepped roller 28 is provided with a helical groove or scroll 32 the pitch of which is that of the prongs of the zigzag strip and the width of which is the dimension P in FIG. 1.

The stepped roller 30 has a similar groove or scroll 34 of the same pitch but of opposite hand and the width of which is that of a tip of the prong 12 of the zigzag strip.

It will be clear that rotation of the cylinders in opposite directions with the zigzag'strip engaged in their grooves will result in longitudinal movement of the strip over the table 26.

FIG. 5 of the drawings shows one convolution the scroll from which it will be seen that over a sector S which is about one tenth of a circle, the groove is straight, .i.e., lies in a plane at right angles to the axis of the cylinder. When the zigzag strip is engaged in that part of the grooves, its progression along the table 26 is arrested.'lt is at this moment that the shaping of a prong is effected or started.

The table shown in FIG. 3 has a right-hand extension 36 the width of the top of which decreases away from the table. When a tooth of zigzag passes from the table 26 proper, as it is about to do as shown at 10A FIG. 6, its ends project beyond the side edges of the extension and lie in the grooves 32 and 34 of the scrolls.

In the portion S of the first convolution of those grooves there is a striker or hammer 38 which strikes those ends and bends them into the position shown at 108 in FIG. 7, the extension 36 of the feed table acting as an anvil. In a further convolution, there is a further hammer 39 at a greater radial distance from the axis of the cylinder which, on continued rotation of the latter, causes the partially bent zigzag to' be further bent into the position shown at 10C in FIG. 8. The; final tubular form 10D is achieved by a third hammer 40 (FIG. 8).

There is, of course,,the possibility that the teeth of the zigzag strip after passing beyond a hammer will tend to spring back. This may make it desirable to duplicate the hammers in neighboring convolutions and for theprongs to be bent by them beyond the finally desired position into which they spring back under the effect of their resilience.

It is important that the zigzag strip be accurately aligned along the feed table when it reaches the feed cylinders. To that end a guide 50 is provided as shown in FIG. 3.

In addition a platform or cam surface 52 (FIG. 6) is provided in each groove of the scrolls in a position so that it engages the outermost part of each prong immediately before it isolamped. As the hammers 38 are positioned on the rollers 28, 30 so as to strike the tips 16 and the roots of the prongs simultaneously, the platforms on opposing rollers engage the wire simultaneously. The platforms 52, whilst they are adjusted to the exact width of the wire at the respective stage, cause the strip to be positioned central on the anvil 26.

Also to enable the hammers 38, 39, 40 to do their work the central parts of the prongs, are held by a clamp shown at 44 in FIG. 3 which is caused at appropriate times to grip the strip between itself and the anvil 36 after it has been positioned centrally by the platforms 52.

The clamp 44 is pivotally mounted at 60 and moved into its clamping position by an eccentric 62 geared to the rollers 28, 30. A cam follower lever 63 which acts on an adjustable stop 64 at the free end of the clamp is urged into engagement with the eccentric by means of a spring 65.

The clamp 44 has a projection 46 (FIG. 9) which serves at the same time to put into the prongs of the binder the kinks referred to above in connection with FIG. 2, the anvil 36 having depression 47 matching the projection 46. Thus, the flat zigzag is converted to the slotted tube shape of FIG. 2 and is indexed along the feed table by a mechanism which is exclusively rotary.

The shape and constitution of the hammers can be varied within wide limits. It is advantageous for them to exert a gradually increasing pressure on the parts they are designed to bend. They can, for example, be formed as rollers or they can be fixed cam surfaces any desired shape. Being subject to wear they should be made of a hardened material and mounted for easy removal and replacement. Some examples of hammers are shown in FIGS. 6A, 6B, and 6C. At A therein, the hammer is a hardened steel insert in a slot 66 in which it is held by a screw 68 at any desired projection. At B, the hammer is a cam or eccentric the throw of which is adjustable by rotation. At C, the hammer is a spring-pressed roller which can yield to a limited extend as it passes the tooth of the zigzag to be bent.

In FIG. 3, the scrolls are shown as single-start helical grooves. They could be formed as mutiple start grooves.

An advantage'of the machine is that it can be very conveniently made to follow a zigzag forming machine and particularly one in which the zigzags are formed by rotary member such, for example, as that forming the subject of Pat. No. 939,649. As the machine of the present invention has a rotary drive, its input shaft can be coupled to a shaft of the zigzag machine so that the two machines are perfectly synchronized and cannot get out of step.

Where the machine is fitted following a zigzag forming machine, some lengthwise adjustment of the rollers 28, 30 may be necessary to prevent a bunching-up or snaking of the wire. This is achieved by turning screw-threaded locking washers 56 on the drive shafts 58 of the rollers.

Although a purely rotary drive is advantageous, it is not essential.

We claim:

1. Apparatus for converting strips of zigzagged wire to be slotted tubular form as set forth herein, comprising means for feeding the strip longitudinally, means for momentarily arresting the feed of each prong as it reaches a shaping station, means for clamping each prong at that station with its tip and root overhanging an anvil on which it rests and means at the shaping station arranged to strike the overhanging portions of a clamped prong to cause them to conform to a shape determined by the anvil, said means comprising a pair of rotors disposed with their axes parallel to the longitudinal axis of the strip and strikers which project radially from said rotors so that the parts of the prongs which overhand the anvil lie in the path of the strikes so as to be struck by them in passing.

2. Apparatus according to claim 1 in which the said rotors have helical scrolls in which the tips and roots engage so as to constitute the strip feeding means.

3. Apparatus according to claim 2 in which each scroll has a portion lying in a plane at right angles to its axis and serving to arrest the feed of each prong momentarily while it is being shaped.

4. Apparatus according to claim 1 in which the strikers are housed in the grooves of the scrolls.

5. Apparatus according to claim 1 having a number of strikers at the shaping station arranged one after the other in the direction of movement of the strip at progressively decreasing distances from the centerline of the strip.

6. Apparatus according to claim 1 in which means are provided at the shaping station for centering the strip immediately before it is clamped.

7. Apparatus according to claim 6 in which the said means are in the form of cam surfaces on the helically grooved rollers.

8. Apparatus according to claim 7 in which the clamping means also serve to indent that part of each prong which is midway between its tip and its root.

9. Apparatus for converting strips of zigzagged wire to the slotted tubular form as set forth herein, comprising means for feeding strip longitudinally to and through a shaping station,

an anvil at said shaping station adapted to support said strip with the tip and root of each prong laterally overhanging it and means disposed laterally of said anvil on each side thereof for rotation about an axis parallel to the longitudinal axis of the strip and having radial projection adapted on rotation of said means to strike and overhanging tips and roots in passing.

10. Apparatus according to claim 9 wh in which the extremities of said projections are rounded whereby to ensure substantially rolling action between them and the tips and roots of the prongs.

11. Apparatus according to claim 9 in which said rotary means are rollers and are formed with radial housings for said projections and in which means are provided for radial adjustment of the projections in the housing and for fixing them in any adjusted position.

12. Apparatus according to claim 9 which said feeding means comprise rollers formed with helical grooves in which the tips and prongs of the zigzag strip engage.

13. Apparatus as claimed in claim 9 in which said feeding means comprise a pair of rollers formed with helical grooves in which the tips and prongs of the zigzag strip engage and in which said rotary means are extensions of said rollers.

Claims (13)

1. Apparatus for converting strips of zigzagged wire to be slotted tubular form as set forth herein, comprising means for feeding the strip longitudinally, means for momentarily arresting the feed of each prong as it reaches a shaping station, means for clamping each prong at that station with its tip and root overhanging an anvil on which it rests and means at the shaping station arranged to strike the overhanging portions of a clamped prong to cause them to conform to a shape determined by the anvil, said means comprising a pair of rotors disposed with their axes parallel to the longitudinal axis of the strip and strikers which project radially from said rotors so that the parts of the prongs which overhand the anvil lie in the path of the strikes so as to be stRuck by them in passing.
2. Apparatus according to claim 1 in which the said rotors have helical scrolls in which the tips and roots engage so as to constitute the strip feeding means.
3. Apparatus according to claim 2 in which each scroll has a portion lying in a plane at right angles to its axis and serving to arrest the feed of each prong momentarily while it is being shaped.
4. Apparatus according to claim 1 in which the strikers are housed in the grooves of the scrolls.
5. Apparatus according to claim 1 having a number of strikers at the shaping station arranged one after the other in the direction of movement of the strip at progressively decreasing distances from the centerline of the strip.
6. Apparatus according to claim 1 in which means are provided at the shaping station for centering the strip immediately before it is clamped.
7. Apparatus according to claim 6 in which the said means are in the form of cam surfaces on the helically grooved rollers.
8. Apparatus according to claim 7 in which the clamping means also serve to indent that part of each prong which is midway between its tip and its root.
9. Apparatus for converting strips of zigzagged wire to the slotted tubular form as set forth herein, comprising means for feeding strip longitudinally to and through a shaping station, an anvil at said shaping station adapted to support said strip with the tip and root of each prong laterally overhanging it and means disposed laterally of said anvil on each side thereof for rotation about an axis parallel to the longitudinal axis of the strip and having radial projection adapted on rotation of said means to strike and overhanging tips and roots in passing.
10. Apparatus according to claim 9 wh in which the extremities of said projections are rounded whereby to ensure substantially rolling action between them and the tips and roots of the prongs.
11. Apparatus according to claim 9 in which said rotary means are rollers and are formed with radial housings for said projections and in which means are provided for radial adjustment of the projections in the housing and for fixing them in any adjusted position.
12. Apparatus according to claim 9 which said feeding means comprise rollers formed with helical grooves in which the tips and prongs of the zigzag strip engage.
13. Apparatus as claimed in claim 9 in which said feeding means comprise a pair of rollers formed with helical grooves in which the tips and prongs of the zigzag strip engage and in which said rotary means are extensions of said rollers.
US3566927A 1967-12-15 1968-12-06 Bookbinding Expired - Lifetime US3566927A (en)

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GB5716167 1967-12-15

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US3566927A true US3566927A (en) 1971-03-02

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US3566927A Expired - Lifetime US3566927A (en) 1967-12-15 1968-12-06 Bookbinding

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US (1) US3566927A (en)
BE (1) BE725471A (en)
DE (1) DE1814632C3 (en)
DK (1) DK146375C (en)
ES (1) ES361338A1 (en)
FR (1) FR1599925A (en)
GB (1) GB1251807A (en)
NL (1) NL157819B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178972A (en) * 1978-08-14 1979-12-18 Hans Sickinger Co. Machine for manufacturing zig zag wire binders
US4281690A (en) * 1978-11-03 1981-08-04 E. C. H. Will (Gmbh & Co.) Method and apparatus for making wire binders for pads or the like
US4457655A (en) * 1980-11-08 1984-07-03 Womako Maschinenkonstruktionen Method and apparatus for assembling pronged binding strips with stacks of paper sheets or the like
US4513794A (en) * 1981-11-14 1985-04-30 Womako Maschinenkonstruktionen Gmbh Wire forming machine
US4599881A (en) * 1983-04-28 1986-07-15 Roda Holding Anstalt Method and arrangement for winding and forming helixes of elastic plastic or metal wire
US4721136A (en) * 1985-07-02 1988-01-26 Bielomatik Leuze Gmbh & Co. Binding comb shaping device
US4873858A (en) * 1987-05-22 1989-10-17 James Burn International Ltd. Manufacture of wire binding elements
US4875355A (en) * 1987-05-22 1989-10-24 James Burn International Ltd. Manufacture of wire binding elements
US20020085897A1 (en) * 2000-11-29 2002-07-04 Thomas Blattner Binding process for manufacturing brochures
GB2377901A (en) * 2001-07-24 2003-01-29 James Burn Internat Ltd Improvements in and relating to the manufacture of wire binding elements
CN103691850A (en) * 2013-12-19 2014-04-02 台州久嘉机电材料有限公司 Progressive rolling forming device of plastic double-coil forming machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10223481A1 (en) * 2002-05-27 2003-12-11 Heidelberger Druckmasch Ag Device for loosely binding printed sheets to form booklets using a loop-like wire binding element comprises two C- and two O-shaping devices positioned so that the initially flat wire binding element is bent into a C- and then an O-shape

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190722A (en) * 1937-05-24 1940-02-20 Martin Andre Lueien Machine for shaping wires which are intended for binding perforated leaflets
US2832392A (en) * 1954-04-22 1958-04-29 Odin Corp Wire insert for tires
US2868236A (en) * 1953-11-02 1959-01-13 W F And John Barnes Company Apparatus for making wire articles
US2874731A (en) * 1954-05-24 1959-02-24 W F And John Barnes Company Wire forming apparatus
US3451081A (en) * 1968-01-03 1969-06-24 Burn & Co Ltd James Book-binding machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190722A (en) * 1937-05-24 1940-02-20 Martin Andre Lueien Machine for shaping wires which are intended for binding perforated leaflets
US2868236A (en) * 1953-11-02 1959-01-13 W F And John Barnes Company Apparatus for making wire articles
US2832392A (en) * 1954-04-22 1958-04-29 Odin Corp Wire insert for tires
US2874731A (en) * 1954-05-24 1959-02-24 W F And John Barnes Company Wire forming apparatus
US3451081A (en) * 1968-01-03 1969-06-24 Burn & Co Ltd James Book-binding machines

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178972A (en) * 1978-08-14 1979-12-18 Hans Sickinger Co. Machine for manufacturing zig zag wire binders
US4281690A (en) * 1978-11-03 1981-08-04 E. C. H. Will (Gmbh & Co.) Method and apparatus for making wire binders for pads or the like
US4457655A (en) * 1980-11-08 1984-07-03 Womako Maschinenkonstruktionen Method and apparatus for assembling pronged binding strips with stacks of paper sheets or the like
US4558981A (en) * 1980-11-08 1985-12-17 Womako Maschinenkonstruktionen Gmbh Method and apparatus for assembling pronged binding strips with stacks of paper sheets or the like
US4513794A (en) * 1981-11-14 1985-04-30 Womako Maschinenkonstruktionen Gmbh Wire forming machine
US4599881A (en) * 1983-04-28 1986-07-15 Roda Holding Anstalt Method and arrangement for winding and forming helixes of elastic plastic or metal wire
US4721136A (en) * 1985-07-02 1988-01-26 Bielomatik Leuze Gmbh & Co. Binding comb shaping device
US4875355A (en) * 1987-05-22 1989-10-24 James Burn International Ltd. Manufacture of wire binding elements
US4873858A (en) * 1987-05-22 1989-10-17 James Burn International Ltd. Manufacture of wire binding elements
US20020085897A1 (en) * 2000-11-29 2002-07-04 Thomas Blattner Binding process for manufacturing brochures
US20020085898A1 (en) * 2000-11-29 2002-07-04 Hans-Peter Wurschum Apparatus and method for segmented bending of wire binding elements
US20020106265A1 (en) * 2000-11-29 2002-08-08 Mario Litsche Binding apparatus and method
GB2377901A (en) * 2001-07-24 2003-01-29 James Burn Internat Ltd Improvements in and relating to the manufacture of wire binding elements
GB2377901B (en) * 2001-07-24 2004-03-17 James Burn Internat Ltd Improvements in and relating to the manufacture of wire binding elements
CN103691850A (en) * 2013-12-19 2014-04-02 台州久嘉机电材料有限公司 Progressive rolling forming device of plastic double-coil forming machine

Also Published As

Publication number Publication date Type
DK146375C (en) 1984-03-05 grant
NL6817826A (en) 1969-06-17 application
ES361338A1 (en) 1970-11-16 application
DK146375B (en) 1983-09-26 grant
BE725471A (en) 1969-06-13 grant
NL157819B (en) 1978-09-15 application
DE1814632C3 (en) 1979-10-25 grant
DE1814632B2 (en) 1979-03-01 application
DE1814632A1 (en) 1969-07-10 application
GB1251807A (en) 1971-11-03 application
FR1599925A (en) 1970-07-20 grant

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Owner name: JAMES BURN INTERNATIONAL LIMITED DOUGLAS ROAD ESHE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JAMES BURN BINDINGS LIMITED;REEL/FRAME:004375/0486