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Paper-fastening device

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US1610632A
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US
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Grant
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Prior art keywords
wire
slide
die
member
movement
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Svenson Sven
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Michael K Reilly
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/02Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
    • B25C5/04Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work with means for forming the staples in the tool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/02Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
    • B25C5/0285Hand-held stapling tools, e.g. manually operated, i.e. not resting on a working surface during operation
    • B25C5/0292Hand-held stapling tools, e.g. manually operated, i.e. not resting on a working surface during operation with the objects to be stapled together introduced perpendicularly to the longitudinal axis of the tool in an opening formed by an anvil and a plunger
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27FDOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00Nailing or stapling; Nailed or stapled work
    • B27F7/17Stapling machines
    • B27F7/19Stapling machines with provision for bending the ends of the staples on to the work
    • B27F7/21Stapling machines with provision for bending the ends of the staples on to the work with means for forming the staples in the machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27FDOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00Nailing or stapling; Nailed or stapled work
    • B27F7/17Stapling machines
    • B27F7/30Driving means
    • B27F7/32Driving means operated by manual power

Description

Dec. 14 1926. 1,610,632

s SvENsoN PAPER FASTENING DEVICE Original Filled Feb. 4. 1924 4 Sheets-Sheet l Fij, l

Z726 zv- Ja TTORNE S Dec. 14,1926. 1,610,632

s. svENsoN PAPER FASTENING DEVICE Original Filed Feb. 4. 1924 4 Sheets-Sheet Fig ATTO NEY Dec. 14, 1926. 1,610,632

s. SVENSON PAPER FASTENING DEVICE original Filed Feb. 4. 1924 4 sheets-sheet 5 IN VEN TOR.

www

ATTORNEYS.

Dec. 14 1926.

S. SVENSON PAPER FASTENING- DEVICE Original Filed Feb. 4, 1924 4 Sheets-Sheet 4 INVENTOR.

s EW ATTORNEYS',

Patented Dec. 14, 1926.

UNITED .STATES- PATENT oFFlcE.

SVEN SVENSON, OF FOND DU LAC, WISCONSIN, ASSIGNOR OF ONE-HALF TO MICHAEL K. REILLY, 0F FOND DU LAC, WISCONSIN'.

PAPER-FASTENING DEVICE.

Application illed February 4, 1924, Serial No. 690,397. Renewed lay 5, 1926.

This invention relates to improvements in paper fastening devices.

It is the primary object of this invention to provide a novel and effective paperfastening device adapted to unite a multipliclty of sheets of paper by means of wire staples cut and formed by the machine in the course of its operation.

More specifically stated it is one of the objects of this invention to provide, in a machine of this character, a retractible anvil over which the staple may be formed and which carries a portion of the Wire feeding or advancing mechanism whereby the retraction thereof, which is necessary to permit of the driving of the staple, may be utilized in the engagement for advance of new lengths of wire into the machinery without additional motion transmitting linkage or other complicated mechanism.

It is a further object of this invention to provide in compact form a machine of the character described in which the staple will be disposed transversely of the work. Various machines heretofore constructed have been designed to feed the staple to the work in such a manner that the staple will extend longitudinally thereof` but such a disposition of the staple has obvious disadvantages in that it does not bind sheets as firmly together as if the strain tending to separate such sheets were. applied simultaneously to both legs of the staple. I am also aware that machines have been made to feed the staple transversely of the Work but such machines have heretofore been awkward and bulky and it is one of the important objects of this invention to provide a machine in which the wire feeding and staple forming mechanism will be mounted in ,a narrow and compact form, the wire being preferably fed longitudinally of the work initially and then guided to move transversely thereof past the staple forming die.

It is a further purpose of this invention to provide novel and simplified feeding devices for the wire from which the staples are formed and to otherwise simplify, cheapen and render compact, mechanism of this general character.

ln the drawings:

Figure 1 is a front elevation of a device embodying this invention and adapted to be held in the hand during use.

Figure 2 is a side elevation of the device shown in Figure 1.

Figure 3 is an `enlarged longitudinal vertical section of the device shown in Figures 1 and 2.

Figure 4 is a section taken on line 4-4 of Figure 3.

Figure 5 is a section corresponding to Figure 3 and illustrating the device as it appearsat the completion of the paper fastening operation.

Figure 6 is a detail sectional view `taken on line 6 6 of Figure 5.

Figure 7 is a detail sectional view taken on line 7--7 of Figure 6.

Figure 8 is a section taken on line 8-8 of Figure 3.

Figure 9 is a detail view in side elevation of the forming and cutting die illustrated in Figure 8.

Figure 10 is a section taken on line 10-10 of Figure 8.

Figure 11 is a sectional view corresponding to Figure 8 and showing the parts in a position wherein a staple has been formed, ready for penetration of the paper.

Figure 12 is a sectional view similar to Figures 8 and 11, and illustrating the completely formed staple after it has penetrated the paper and is being clenched on the anvil.

Figure 13 is a plan view of a desk machine embodying the principle of the device illustrated in Figures 1 to 12.

Figure 14 is a side elevational view of the device illustrated in Figure 13.

Figure 15 is a view in side elevation illustrating the parts of the machine shown in Figures 12 and 13 when such parts are in their normally retracted position.

Figure 16 is a view corresponding to Figure 15 and illustrating the parts in a partially advanced position.

Figure 17 corresponds to Figures 15 and 16 and illustrates the parts at the completion of the staple forming and clenching stroke.

Figure 18 is a sectional view taken on line 18-18 of Figure 15.

Figure 19 is a sectional view taken on line 19-19 of Figure 16 and illustrating the guide in conjunction with other mechanism shown in Figure 16.

Figure 2O is a detail and sectional view taken on line 20-20 of Figure 14.

Figure 21 is a detail View showing in side All) elevation a portion of the machine opposite to the portion exposed in Figure 14.

Figure 22 is a section taken on hne 22--22 of Figure 17.

Like parts are identified by the same reference characters throughout the several views.

'lhe deviceillustrated in Figures 1 to 12, inclusive, is a tool adapted to be held in the hand and to be operated in the manner in which apair of pliers are used. This tool will be first described.

The handle members or grips comprise levers 2l and 22 which may be formed of sheet metal to provide spaced arms 23 upon lever 2l, and arms 24 upon lever 22. Corresponding arms of each lever are opera tively pivoted by means of a transverse bolt or rivet 25.

The operating parts of the tool are principally sup orted and motivated by means of a pair o normally spaced frame members which will hereinafter be termed jaws. The upper jaw 26 is pivotally connected by the transverse bolt 27 with the spaced a'rms 24 on" level' 22. The lower jaw 28 is similarly connected by bolt 29 with the spaced arms 23 of lever 21. Each of said jaws comprises a channel shaped member, the flanges of which are provided with longitudinally extending slots 30. The slots of member 28 receive a cross pin 31 in lever 22, and the slots of jaw 26 receive a similar cross pin 32 in lever 21. The arrangement is such as to ensure that the jaws willhave parallel motion when the handle grips or levers 2l and 22 are compressed in such a Way as to move jaws 26 and 28 together.

The sheets of paper or other material which are to be fastened together in the use of this device are introduced into a slot 36 in the end of jaw 28 immediately above an anvil 37 which projects forwardly from the lower portion ot' said slot. Intermediate of its sides the said anvil is provided with a groove or depression 38 which is arcuately formed in the manner most clearly shown in Figure 7. As will hereinafter be explained. this groove receives and upsets the ends of a wire staple toward the center of the anvil as such a staple is being forced through the paper pieces supported on the anvil.

The 'wire feed.

'Within the channel shaped jaw 28 there is a reciprocable slide 4() which is guided for longitudinal movement by means of slots 4l and 42 which receive, respectively, the the pivot pin 29 and a specially provided transverse pin 43 in the jaw. In its upper portion this slide is recessed at 44 to re ceive a link 45 which connects it loosely with jaw 26. The loose connection is affected through the medium of slots 46 and 47 through which pass, respectively, the transverse pin 48 of jaw 26 and the transverse pin 49 of the slide. The arrangement is such that for reasons hereinafter to be mentioned, the jaw will have a limited downward movement before slide actuation commences, and

will thereafter reciprocate Said slide rearwardly. When the handles 21 and 22 are released by the operator to an extent suflicient to permit them to open, they will immediately assume their normal position, as indicated in Figure 3, due to the tension of a spring 50'which is connected with pivot pin 27 and with the transverse pin 32. In the course of separating jaws 26 and 28, spring 50 will also serve to advance slide 40 to the position in which it appears in Figure 3. In the course of such advance there will he as much lost motion, due to the slots 46 and 47 in link 45, as occurred during the retraction or rearward movement of the slide.

The material of which jaw 28 is composed is extended rearwardly at 52 and is formed with upstanding ears 53 for the support of a small transverse shaft 55 upon which the spool 56 of wire is rotatable. The shaft 55 may conveniently comprise a screw in order to facilitate the replacement of spool 56 when said spool has been emptied.

An upright or post 57 supported from the portion 52 or jaw 28 carries a clutch device 59 for the operative engagement of wire 60 led from the spool 56. The clutch 59 comprises a tube 62 having an axial opening 63 with a funnel shaped inlet portion 64, whereby to take care of wire 60 without undue friction, regardless of the extent to which spool 56 may be filled. The axial bore or opening 63 of tube 62 is traversed by a diagonal slot 65 within which a small roller 66 is movable. This roller comprises the actual clutch element. For simplicity of construction. this may be groovcd periphorally at 67 adjacent each of its ends to receive the helical spring 68 threaded exteriorly upon tube 62 and finding a bearing in groove 67, for the purpose not only of urging said roller toward the bottom of its slot but also for the purpose of centering said roller with respect to said tube against lateral displacement therefrom. The spring is seated at its far end against a plate 70 which serves to connect tube 62 with post 57, the post being slotted to receive the plate, which may be welded or soldered therein. The roller 66 comprises the real clutch element of the device. It is pressed into frictional engagement with wire 60. When the wire moves forwardly to the hole in tube 62 it will tend to cause roller 66 to move forwardly against the compression of spring 68. Any .such movement of the roller, however, tends to cause said roller to move outwardly in the inclined slot 65 and thereby to relieve the wire for free movement. If, however, the wire tends to move oppositely throu,f, ;fh tube 62 it will tend to car1 y.with it roller 66 which is maintamed 1n frictional engagement with the wire by means of the spring. Any such movement of the roller produces a wedgmg action 1n conJunction with the walls of the slot 65, thereby securing wire against any rearward movement.

The reciprocable slide 4() carries a tubular guide 72 having a rearward portion which is substantially longitudinal and to which is connected a clutch device 73 similar in all particulars to the clutch device 59 which has previously been described. Upon the occasion of relative movement between clutch device 73 and wire 60, whereby the wire tends to advance or move forwardly with respect to clutch device 73, said device will readily permit such movement. If, however, any relative movement occurs in which the wire (SO tends to move rearwardly with respect to device 73, the device 73 w ill engage the wire with a wedging action to overcome such tendency. Thus, when the slide 40 is reciprocable rearwardly it will move freely with respect to wire 60, the

wire being held against a similar rearwardly movement by means of clutch device 59. When the slide 40 is again moved forwardly, clutch device 73 will engage the wire and clutch device 59 will permit the wire to advance. Thus, all relative movement between guide 72 and wire 60 occurs during the rearward reciprocation of slide 40. lVhen slide 40 reciprocates forwardly the clutch device 73 ensures that the portion of the wire within guide 72 will move unitarily therewith.

The guide 72 is curved at 74 outwardly beyond the contines of jaw 28 and is thereafter curved inwardly at 75 adjacent the fiout of theI tool to a point of termination at 7G in which the guide is directed almost transversely of the tool but at a slight angle forwardly of an absolutely transverse line. By means of this guide, the wire carried by spool 5G and fed through the interaction of clutch devices 59 and 78, is directed transversely of the tool to an opcrative position with respect to a mandrel, forming presses, and a punch which are hereinafter to be described.

o-operating with the guide tube 72 are the walls of a longitudinal slot in a U-shaped plate 81, the legs of which are secured to the sides of the channeled jaw member. 28 and the bow-shaped portion of which extends around the front of the jaw member. as best shown in Figure 4. It is this U-shaped plate which co-operates with anvil member 37 to provide the recess 36 into which are thrust the paper sheets to be fastened together.l The walls of slot 80 definitely fix the position of wire 60 and are of sufficient extent to retain said wire even when the reciprocable feeder is in its most and 78 and the degree of reciprocation of slide 40 that no stop is really necessary.

The mandrel.

When the wire 60 is in the position indicated in Figure 3 it rests upon a mandrel 82 formed at the forward end of slide 40 and movable therewith. The top of the mandrel is at a height'corresponding to the lower rmargin of slot 8O so that the wire, as it is fed through said slot, will rest directly upon the mandrel.

In order to position the wire accurately upon the mandrel directly beneath the forming die hereinafter to be described, I connect to an intermediate portion of the U-shaped plate 81 a vertically extending stop member 84 which is received within a corresponding slot 85 in the mandrel. The fact that the mandrel thus extends forwardly upon either side of the stop block makes it impossible for wire lodged against said block ever to become displaced over the end of the mandrel by the initial downward l movement of the forming die. This eXtension of the mandrel fully ensures that the mandrel will remain positioned beneath the wire during the initial rearward movement of slide 40 and until the forming die has had suicient time to complete the forming operation.

Fowm'ng die.

The forming die comprises a vertically reciprocable member which is best shown in detail in Figures 8, 9, and 10. The die proper comprises a pair of spaced legs 86 and 87 which are preferably provided with slight transverse grooves at their lower ends to ensure accurate contact with the wires. Both legs are also provided on their inner faces with vertical grooves 88 within which the punch member hereinafter to be de scribed is slidable. The ends of grooves 88 communicate with the transverse grooves which have just been described, and which are best shown in Figure 9 at 89.

The 1egs86 and 87 are connected by ay transverse web 90 which is rearwardly olfset from the plane of grooves 88 so as not to interfere with the free vertical movement of the punch. The portions 91 of the legs, which are immediately adjacent web HTI lun

90 upon either side thereof, are guided against longitudinal displacement in the course of their `vertical reciprocation by means o't slots 92 cut in the opposite walls or` flanges of the channel-shaped upper jaw 26 of the device. The arms 93 and 94 which extend upwardly from portions 91 of arms 86 and 87 are disposed exteriorly of the flanges of jaw 26 and are shouldered at 95 to receive the downward compression of a Hat spring 96 mounted on top of the upper jaw.- A transverse pin 97 connects the extremities ot arms 93 and 94 and contines the spring against shoulders 95, as shown.

Provision is also made upon the lower jaw for guiding the forming die for vertical movement. Such provision may conveniently consist in the upsetting of portions ot the U-shaped plate 81, which has previously been described. Vertical cuts may be made in each leg of said plate at a spaced interval of approximately the thickness of the legs 86 and 87 of the forming die. The tongue of metal between each pair of cuts bears upon the exterior surface of the adjacent leg of the die. The corners bordering on said cuts upon either side of said tongue are then bent inwardly, as best shown at 98 in Figure 6, thereby confining the legs of the die against longitudinal displacement.

It will be understood that the legs 86 and 87 of the forming die straddle the mandrel 82 during the forming operation. Furthermore, leg 86 is immediately adjacent that portion of plate 81 in which the slot 80 is located. Thus, the initial downward movement of the forming die will cause leg 86 to co-operate with the wall of slot to shea-r that portion of wire 60 which projects beyond said slide. Thereby a blank will be formed'- which will rest upon the mandrel 82 and will be engaged in the transverse grooves 89 of legs 86 and 87. The continued downward movement of said legs bends about the mandrel the projecting ends of the blank 60, such ends being received in the grooves 88 of the die. wire so bent will take the form of a staple.

The pressure required for the shearing and forming operatlon just described above is greater than can be furnished by spring 96, although such spring tends to transmit with resilient yielding the downward force of jaw 26 to the forming die. In order to relieve the spring 96 during the wire cutting and forming operations, I prefer to utilize an interposed member 100 which is ,normally held in abutment against the punch member, hereinafter to be described,`

by means of a compression spring 101 seated at its rear end against a transverse member 102 supported within jaw 26. The motion transmitting block 100 is connected with a longitudinally reciprocable slide 103 carry- Ultimately the ing at its rear end a downwardly extending linger 104. This finger is spaced slightly rearwardly of the cross pin 32,'whercby to be engaged by said pin after the initial closing movement of jaws 26 and 28 has occurred. Member 100 bears at its lower end upon the upper margin of the web of the forming die, thereby serving to transmit positively to the die pressure of jaw 26 during the cutting and forming operations. The-finger 104, however, vis so positioned with reference to the cross pin 32 that at the completion of the wire cutting and forming operations the finger 104 will contact with said pin and will be drawn rearwardly thereby. As a result, the block will also be drawn rearwardly against the compression of spring 101 and will no longer contact with the upper margin of web 90. Thereafter the forming die will be maintained in resiliently yieldable pressure contact with the 'paper on anvil 37 through the action of spring 96.

T he punch.

The punch comprises a thin strip of metal having a vertically disposed portion 105 riding in the grooves 88 of the forming die and integrally connected at its upper end with a longitudinally extending portion 106 which is riveted or otherwise connected with the horizontal web ot jaw 26. In other words, the portion 106 otl the metal strip above referred to serves merely to connect to jaw 26 the vertical strip 105, which comprises the punch proper.

rlhe punch 105 terminates, in the retracted position of the parts, with its lower extremity spaced t'or a certain distance above wire 60 in the manner clearly indicated in Figures 3 and 8. Tt will be understood that the grooves 88. which serve to receive the side margins ot the punch and to retain the punch and the forming die in their respective relative positions, have the .further function ot receiving the wire during the staple forming or bending operation. Therefore the bottom extremity of punch 105 is disposed at a suiiicient height, in Figure 3, to enable -this bending operation to occur and be completed at the time the punch contacts with the upper end of the staple. At this time also the slide 40 will have moved mandrel 82 out of the completed staple, thereby leaving the staple free for downward movement. guided by grooves 88. The legs 86 and 87 of the forming die will be in contact with the paper, and will thereby serve to direct the ends of the staple vertically through the paper under pressure of punch 105. As such ends encounter the anvil 37 they will be guided inwardly by the arcuate groove 38 1n the anvil and, in the continued downward movement of the punch, will be pressed flat and clenched to bind firmly the paper sheets through which the4 staple is passed.

Oper/'ation In order that the synchronous operation of the several elements above described may be more fully appreciated, a brief summary will be given. i

'lhe tool will be held in the hand with the handles 21 and 22 within the operators grasp. The sheets of paper or other material to be fastened by the tool will be introduced into the recess 36 above the'anvil 37. T he interior mechanism of the tool will appear at this time in the position indicated in Figures 3 and 4. Handles 21 and 22 are now pressed to move the jaw members 26 and 40 to the position in which they appear in Figure 5. The jaws 26 and 40 are maintained in parallelism through the particular conlnection of handle levers 21 and 22 therewit i.

During the initial closing movement ofA jaws 26 and 40 the first thing .which occurs is the severing of that portion of wire 6() which extends beyond the slot P0. The severing operation occurs before the slide 40 commences its rearward reciprocation, a certain amount of lost motion being possible by reason of the particular construction of link 45, as previously described. The wire blank cut bythe interaction of leg 86 of the die with the wall of slot 80 will rest on the upper surface of the mandrel and will be confined against displacement by the transverse groove 89 in the legs of the die.

The continued closing movement of jaws 26v and 40 will result in the commencement of the staple forming operation and will sin'iultaneously result in the rearward movenient of slide 40. The commencement of the staple forming operation is best illustrated in Figure 11. As the slide moves rearwardly tht. mandrel 82 is withdrawn from the staple so that the completed staple is ultimately left free to be pressed downwardly through the paper by t e punch. Slide 40, as heretofore described, has the additional function of effecting the feed of wire from spool 56. This result is accomplished b v reason of the fact that the clutch device 59 secures the 'wire 60 against retrogressive movement, whereas clutch device 73 moves freely rearwardly with respect to the wire to the limit of movement of the slide. Thus, the tubular guide 72 which is carried by the slide is being moved with respect to the wire therein, and as a result, the wire bcgins. during the initial rearward movement of the slide. to project from the extremity 76 of the tube. In order to ensure that the wire may not catch upon leg 86 of the forming die said leg is preferably cut way, as indicated at 110, whereby to deflect rearwardly the end of the wire should such end contact therewith.

At the handles 21 and 22, near the completion of their stroke, the block 100, which has theretot'ore been positively backing the forming die, will be retracted and the forming die will contact with the paper sheets 111 upon the anvil. The continued movenient of jaw 26 is permitted by the yielding of spring 96 while the forming die is maintained firmly in contact with the sheets. The punch or press 105 now contacts -with the upper portion of the staple and drives the staple, guided by the grooves in the forming die, into the paper where it is clenched by anvil 37 in the manner already described. The commencement of the clenching operation is illustrated in Figure 12. Obviously, the completion of the clenching operation will leave the staple in a position to clamp firmly the sheets of paper which have been penetrated by it. At this same time the clutch device 73 carried by slide 40 will reach the rearmost extremity of its stroke and the Wire 60 will project slightly forwardly from the tubular guide 72, in the manner best shown in Figure 6. The fact that the tube is so positioned as to direct the wire forwardly ensures that the wire will, during the initial movement of the slide, not catch on anything which might tend to keep it from arriving at a position immediately beneath the forming During the compression of handles 21 and 22 spring 50 has been placed under tension and, upon the relief of pressure upon said handles, the spring will serve to direct the parts to their normal positions. The clutch device 73 is now firmly engaged with the wire, while clutch device 59 releases its hold to permit the wire to move freely therethrough. Thus, no relative movement occurs between the wire and tubular guide 72 during the forward movement of the slide. The Wire is carried as indicated in Figure 6.

Ultimately the parts will all be restored to the positions indicated in Figure 3. The plunger 105 being positively connected with jaw 26 will be elevated therewith and, when spring 96 rests flat upon the u per portion of jaw 26, the forming die will positively retracted to its original position. As the forming die is raised, the returning slide 40 advances the mandrel 85 to a position between the legs 86 and 87 of the forming die, the stop plate 84 being received within the slot 85 of the mandrel. This stop plate has its forward margin so located as to be accurately aligned with the forward end of slot 80 so that the wire which originally projected forwardly, as shown in Figure 6, is, by the stop plate 84, brought to rest T Le desk Ze/vice.v

In principle of operation the desk device corres onds closely with the tool which has thus ar been described. Relative movement between parts is, however, differently produced in the desk device by reason of the fact that the hand supported tool al ready described makes use, in accomplishing its purposes, of structural features whlch are peculiar to the s stem of levers by lmeans of which the handy supported tool 1s operated.

The desk device replaces jaw 28 as previously described with an equivalent jaw member comprising a fiat base having at its forward end an anvil plate 37', and having at its rear end an arm 52 for the. support of the spool 56. The spool in this device corresponds with that already discusse-d but may conveniently be provided with a peculiar support which comprises a sheet metal clip having upstanding ears 116 and 117, portions of which are pressed inwardly to provide studs 118 for the rotatable mounting of spool 56. The base of the clip ncludes front and rear horizontal web portions 119 which pass beneath arm 52 and an intermediate portion 120 which is pressed arcuately upwardly, whereby to permit-arm 52 to be received and frictionally engaged between web portions 12() and 119 of the clip. This arrangement is best shown in Figures 14 and 20. The clutch device 59, which is supported from arm 52', may correspond exactly with the clutch device 59 previously described.

The support for the operating parts of the tool may comprise `a piece of sheet metal bent'to form a substantially tubular connecting portion 121, spaced parallel plates 122 and 123, and outwardly turned flanges 124 connected respectively with said plates and resting lat on base 115 for connection therewith. The U-shaped plate 81 is likewise provided with outturned fianges 125 for connection with the base member 115 but is otherwise substantially identical with the corresponding U-shaped plate 81 in the hand supported tool.

The slide.

The slide 40 corresponds closely with slide 40 which has previously been described. It carries a guide tube 72 corresponding to guide tube 72 and, at the rear end oi said tube, a clutch device 7 3 which may be identical with that described above. The mandrel 82 corresponds in function, and quite generally in shape, to that above discussed, although its specific form is slightly different, as is clearly shown in Figures 15 to 1,7, inclusive.

A Sliding actuating merma.'

Vertically reciprocable in the tubular por tion 121 of the support is a jaw member corresponding functionally to jaw 26 and coinA prising a tubular plunger 128 which is plugged at 129 and capped with a button 130 secured to the plug by means of a screw Projecting rearwardly froin said tube between plates 122 and 123 and rigidly connected with said tube is an arm 1755 which may take -the form ot' a plate. This arm is laterally offset with the vertical axis of the tube in order to leave room for other elements hereinafter to be described. Arm

carries a -cani roller 136 which is operable within a slot 1.37 in a plate 138 extending vertically from and rigidly connected with the slide 40. Plate 138 is preferably disposed in the longitudinal plane which includes the vertical axis of plunger 128 and is, therefore, intermediate the plates 122 and 123 ot' the support. The cam groove 137, in which roller 136 is operative, is designed to provide for a limited degree of lost motion between plunger 128 and slide 4U. 'Io this end. the cani groove has an inclined intermediate portion, as shown in Figures 15 to 18 inclusive, and has vertical end portions. The arrangement is such that the initial and ultimate downward movement of the plunger 120 will be without effect on slide 40', but the intermediate part of the plunger stroke will be communicated to the slide to produce a rearward reciprocation thereof. The upward movement of plunger 128 and a corresponding forward movement of slide 40 are produced by a spring 139 coiled exteriorlv upon plunger 128 and confined between a suitable washer 140 0n the support and a head 130 on the plunger.

Forming (lie and punch.

Plunger 128 is transversely and vertically slotted at 141 to receive the forming die 142. The forming die correspondsclosely to that previously described with the exception that itis differently actuated and is made suhstantially rectangular in its outline in order that it may be received and confined against lateral displacement within the portion 121 of the support. The forming die 142 is con fined against longitudinal displacement by the walls of slot 141. It has spaced legs 87 and 86 corresponding to legs 87 and 86 of the die previously described. Legs 86 and 87 are shown in Figure 10 to be provided with vertical grooves on their inner faces corresponding to grooves 88 described with reference to the hand supported tool. Leg 87 is also guided with reference to the iii) Ofi

U-shaped device 82 by means of the in- -wardly upset ears previously referred to,

and best shown in Figure 19. Resilient pressure behind the forming die is furnished y means of a spring 144 which is confined within plunger 128. This spring performs the functions of the fiat spring 96 in the enibodiment of this invention previously described. A

The punch 0i' staple driving member 105 correspond quite closely to the element 105, best shown in Figures 3 to 7, inclusive. Whereas element 105, as previously described, was riveted to jaw 26, the present and correspondingelement 105 is connected with the plunger 128 by means of a longitudinally extending pin 146 through which the movement of the plunger is transmitted positively at all times to the staple driving members 105. The press is reciprocablc in the grooves 88 and 88 of the forming die member 142 when the die member moves with respect to the plunger, due to the yielding of spring 144. The rearward end of pin 146 extends through the wall of plunger 128 at an intermediate point in a vertically extendingr slot 147, which is best shown in Figure 22. The slot is less Wide than the diam-- eter of pin 146 in order that the pin may find support in the wall of the plunger.

Reciprocable through slot 147 in a longitudinal direction is a slide 150 which shows in plan in Figure 13 and is shown in dotted lines in Figures 15 to 17, inclusive. This slide comprises a thin, flat plate notched at 151 for bearing upon the upper and lower surfaces of pin 146. A linger 153 is integrally formed with slide 150 and is bent at right angles laterallv for engagement wth the cam surface 154 of the upright 138 which is carried by the slide. This upright also is provided with a Hat spring 155 which, in the normal position of the parts, contacts with finger 153 to maintain the slide 150 in its innermost position, as indicatedin Figure 15. -The longitudinal reciprocation of slide 150` is further restricted in both directions through the provision therein of a slot 156 which receives the projecting axis pin of cam roller 136.

The function of the slide 150 corresponds to the function of block in the embodiment first described. In other words, slide 150, while free to move longitudinally, can only move vertically in unison with plunger 128. Its longitudinal reciprocaton carries it to and from operative contact with the upper portion 159 of the forming die member 142. `When the slide 150 is in its forwardmost position, as indicated in Figure 15, it will transmit positively the movement of plunger 128 and pin 146 to the die member 142. W'hen the vslide 150 is in its retracted position, as indicated in Figure 17, it will no longer contact with the die member 142 and the latter will be free to ride upwardly withnv the plunger 128 against the compression of spring 144.

Operation.

.feeding of the wire stock will take place exactly in the manner alreadv described and consequently will not be further mentioned at this point. The operating mechanism Apeculiar to this embodiment of the invention, however, will perhaps require further description.

As the plunger 128 moves downwardly it will compress the spring 139 which is later torestore it to its normal or original position. During its initial movement the cam roller 136, which is rigidly connected therewith through tlie medium of arm 135, will move downwardly through the upper vertical portion of ycam .slot 137. In this portion of the .Clot the roller will obviously be productive of no effect upon slide 40. During this period, when the slide is inoperative, the cutting and forming die 142 will be bearing, through its leg` portion 86', upon the wire to .sever therefrom a blank suitable for the staple forming operation;

As the downward movement of plunger 128 is continued the cam roller 136 will ride on to the inclined portionof slot 137 and will commence the rearward reciprocation of slide 40. At the .same time legs 86 and 87 of the forming die member 142 will have descended pastthe upper margin of mandrel 82 and will have commenced the operaton of forming the staple over said mandrel. The parts will appear as indicated in Figure 16. It will be understood that during the operationv thus far described the forming die 142 will have been positively actuated from the plunger through pin 146 and slide 150. As the slide 40 moves rearwardly, however. its cam surface 154 will be acted upon the finger 153 of sllde 150` whereby to draw `said sliderearwardly at the proper rate. The arrangement is such that upon the completion of the staple forming operation, and just about the time of the withdrawal of mandrel 82 from the staple, slide 150 will ride 'free of die member 142. At about this time also the die member will contact with the paper sheets supported on anvil 37', and the plunger in its continued downward movement will begin to compress spring 144.

Relative movement is now occurring between the plunger 128 and the die member 142, whereby the punch press which is depress ositively connected with the plunger, is iaving its extremity advanced toward the bottom of the die member whereby to expelt from grooves 88 the staple previously, formed therein. This staple will be driven throu h the sheets or material to be fastened and will be clenched by anvil 37 in the manner already described. The ultimate osition of, the parts at the time the stap e is clenched is shown in Figure 17.

Upon release of plunger 128 from manual pressure, the spring 139 will`be adequate to restore all of the parts to their normal positions, as indicated in Figure 15. Plunger 12S-will rise vertically, and the roller 136 of arm 135 will act upon an opposite side of cam groove 137 to urge slide 40 forwardly. The forming die 142 will remain in contact with the Work until the compression of spring 144 is offset by Contact of the forming die with the upper end of punch press 105.A Thereafter, the slide 150 will be restored to its operative position abo`ve forming die 142 by4 means of spring 155, which will bear against finger 153'. A new length of wire will meanwhile have been fed through tubular guide 7 in the manner already described with reference to the hand supported device, and the tool will be ready for a new paper fastening operation.

It will readily be seen that in each embodiment of this invention I have provided a novel and comparatively simple mechanism for the specified purposes. Attention is further called to the fact that while the dimensions of the tool are kept within small compass, as is desirable in a manually operable device of this character, nevertheless an arrangement has been perfected for feeding the wire transversely of the anvil. This is important for the reason that in legal documents it is very desirable to secure uniformity in the distance from the top of the sheets at which the staple is applied. If the staple were formed longitudinally of the machine, the machine would have to be applied to the sheets on a side margin thereof, and the staple might be disposed at any distance from the top of the sheets. However, in the present device the staple is formed transversely of the machine and it becomes possible to utilize the depth of recess 36 as a positive guide for determining the location of each staple with reference to the top of the sheet.

While practically any kind or size of wire may be used in devices of this character, I have had particular success in the use of a hard brass for bronze wire ranging in size from .O1 to .016. Such Wire cuts' readily under the degree of pressure which can be conveniently applied manually. The brass or bronze wire cuts more easily than iron or steel of like diameter and has little, if any tendency to cut or mutilate the anvil and other working parts of the device. Furtheimore, brass wire will not rust and deface paper secured by it as might be possible in the use of iron or steel wire.

It may be added further that if it be desired to clench the points of the staple in such a way that they will diverge instead of converge it is only necessary to eliminate grooves 38 in the anvil or to substitute in lieu thereof a slight convex protuberance.

I claim:

l. In a device of the character described, the combination with a frame and an anvil connected therewith, of a 'mandrel reciprocable longitudinally of said frame to and from an operative position in spaced relation above sai anvil, wire feeding mechanism controlled for operation during the forward and A,rearward reciprocation of said mandrel to and from said position, a second frame member reciprocable in a plane substantially normal with the plane of reciprocation of said mandrel, a formingdie adapted to coact with said mandrel and connected with said second frame member to receive positively the initial movement thereof, a yieldable connection between said second frame member and said die adapted to become operative after the initial movement of said second frame member, a staple drivin tool positively connected with said second rame member, motion transmitting connections between said second frame member and said mandrel and adapted to retract said mandrel subsequent to the initial movement of the second frame member as aforesaid, and guiding means adapted to position upon said mandrel wire advanced by said feeding means.

2. In a device of the character described, the combination with a supporting frame, of a slide reciprocable longitudinally thereof and having a portion provided with a platen surface adapted to support wire during a staple forming operation, a spool rotatably supported from said frame rearwardly of said slide, a wire clutch adapted to permit the passage of wire in one direction and to grip the wire against its passage in any opposite direction, said clutch being supported from said frame between said spool and said slide, a second clutch similar to said first mentioned clutch and in substantial axial alignment therewith, said second clutch being supported from said slide, and a tube mounted on said slide and reciprocable therewith and arranged to receive and guide wire issuing from said second clutch.

3. In a device of the character described. the combination With a supporting frame, of a slide reciprocable longitudinally thereof and having a portion provided with a platen surface adapted to support wire durin a staple forming operation, a spool rotatatbly supported from said frame rearwardly of said slidefa wire clutch adapted to permit the passage of wire in one direction and .to

l, gri the wire against its passage in any opposite direction, said clutch being supported from said frame between said spool and said slide, a second clutch similar to said first mentioned clutch and in substantial axial alignment therewith, said second clutch being supported from said slide, and a tube mounted on said slide and reciprocable therewith and arranged to receive and guide wire issuing from said second clutch, said tube being curved outwardly and thence arcuately inwardly to approach a direction transverse to the path of movement of said slide, whereby wire advanced through the interaction of said clutches and passing through said tube will be guided for movement transversely of said slide.

4. In a tool of the character described, the combination with a reciprocable slide and a member disposed adjacent said slide and laterally spaced therefrom, said member being provided with a longitudinally extending slot, of wire guiding means connected with said slide for reciprocation therewith and directed toward said slide externally of said member, said slot being disposed substantially at the level of the top of' the slide, a wire stop disposed substantially axlally of said slide, said stop and slide being formed for interaction and said stop being positioned to act upon wire guided by said means .substantially at the time when said slide and said means reach their ultimate positionof reciprocation in one directiontogether with a wire forming die adapted to cooperate with said slide in the formation of staples from wire projecting across said slide, said die being adapted to interact with the walls of said slot to sever lengths of wire projecting` beyond said member across said slide.

5. In a tool of the character described, the

lcombination with a pair of members connected together for relative vertical movement, of a slide reciprocable with reference to a first ot' said members, a longitudinally slotted guide element laterally spaced from said slide and supported from said first member. wire feeding mechanism including means for directing wire through said slot and across said slide, said means being reciprocable with the slide. a forming die having portions upon either slde of said y slide and positioned above said slide to register operatively with wire therein in one position of said slide andA said'means, res1l1- ently yieldable motion transmitting connections between a second of said members and said die, and positively operable motion transmitting connections between said die and said second member, together with means automatically rendering said last mentioned connections inoperative at a predetermined point in the relativel movement of said memers.

6. In a tool of the character described, the combination with a first and second member having portions guided for relative vertical movement, of a forming die supported from said first. member and mcluding spaced le s directed toward said second member, ya sli e reclprocable with respect to the second member and adapted in one position to be interposed between said legs, a wire guiding ele' ment longitudinally slotted at substantially the level of the top of said slide and spaced fr om said slide to receive between it and the sllde one of said legs, a wire feeding means adapted to feed wire through said slot and across said slide in operative position to be acted upon by the legs of said die, one of the legs of said die being adapted to interact with the walls of the slot of said element to sever blanks from lengths of wire projecting from said element.

7 In a tool of the character described, the combination with a first and second member having portions guided for relative vertical movement, of a forming die supported from said first member and including spaced legs directed toward said second member, a slide reciprocable with respect to the second member and adapted in one position to be interposed between said legs, a wire guiding element longitudinally slotted at substantially the level of the top of said slide and spaced from said slide to receive between it and the slide one of the legs, a wirev feeding means adapted to lfeed wire through said slot and across said slide in operative position to be acted Iupon by the legs of said die, one of the legs of said die being adapted to inter-- act with the walls of the slot of said element to sever blanks from lengths of wire project ing from said element, and said legs being provided at their lower extremities with registering transverse grooves adapted firmly to engage ire carried upon said slide.

8. In a device of the character described, the combination with a first and second member having portions guided for relative vertical movement, of a staple forming die resiliently supported from said tirst member and including laterally spaced leg portions, means automatically operative for providing positive support for saidguide from said first member during the initial relative movement of said members toward each other and for removing such positive support at a predetermined point during said movement, a slide longitudinally reciprocable with respect to the second of said members and adapted adjacent the limit of reciprocation in one direction to be interposed between the legs of said die, and means controlled by the relative movement of said members for feeding lengths of wire across said slide in an operative osition to be acted upon by said die, said means comprising motion transmitting connections between said slide and said first member, a source of wire su ply, a wire advancing mechanism, and guit ing mechanism supported 1n part from said slide and reciprocable therewith.

9. In a device of the character described, the combination with a first member and a second member having portions guided for relative vertical movement, a die member resiliently connected with said first member for movement therewith and provided with spaced leg portion, means providing a positive motion transmitting connection between said first member and said die during a portion of the movement of said members toward each other and adapted automatically to relieve such positive connection at a predetermined point in said movement, a slide reciprocable with reference to said second member and adapted adjacent its extreme position of reciprocation in one direction to extend between the leg portions of said die, wire guiding means adapted to direct wire transversely of said slide to an operative position beneath said legs, said means being supported in part from said slide for movement therewith and in part stationary with respect to said member, a stop relatively fixed with respect to said member and adapted to co-operate with said means to limit said wire to an ultimate position substantially exactly transverse with respect to said slide, and means operatively connecting said slide with said first member 'to receive motion therefrom during the movement of said members to and from each other.

10. In a tool of the character described, the combination with first and second members having portions guided for relative linear movement, of a die resiliently supported from said first member and including web-connected laterally spaced leg portions provided on their inner faces with longitudinally extending grooves, driving press guides in said grooves and terminating at a oint spaced above the extremities of said eg portions, said press being positively connected with said first member, a wire supporting slide reciprocable with reference to said second member and adapted at one extremity of its reciprocable movement to be received between the legs of said die, said legs at the maximum separation of said members being spaced above said slide, wire feeding and positioning means adapted for automatic operation during the to and fro movement of said members and adapted to position lengths of wire on said slide operatively beneath the legs of said die, motion transmitting connections for the automatic retraction of said slide during the movement of said members toward each other, and a second slide reciprocable with reference to the combination with first and second members having portions guided for relative movement t'o and from each other, of a die resiliently yieldable with reference to said first member and comprising webconnected leg portions formed with longitudinally extending grooves in their inner surfaces, a driving press guided in said grooves for movement relative to said die and connected positively with said first member` automatically operable means for initially transmitting positively to said die the movement of said first member and for subsequently releasing said die for resilient yielding movement with respect to said first member, a slide reciprocable with reference to said second member and adapted adjacent one extreme of its reciprocable movement to be received between and beneath the legs of said die, the extremities of such legs being initially above the level of said slide and below the lower extremity of said press, wire feeding mechanism controlled by the movement of said slide, and wire guiding means adapted to position advancing lengths of wire transversely of said slide and operatively beneath the legs of said die, a portion of said means being formed for interaction with a leg of said die, whereby to sever blanks from the wire advanced by said feeding mechanism.

12. In a tool of the character described, the combination with first and second members having portions guided for relative movement to and from each other, of a die resiliently yieldable with reference to said first member and comprising web-connected leg portions formed with longitudinally extending grooves in their inner surfaces, a driving press guided in said grooves for movement relative to said die and connected positively with said first member, automatically operable means for initially transmitting positively to said die the movement of said first member and for subsequently releasing said die for resilient yielding movement with respect to said first member, a slide reciprocable with reference to said second member and adapted adjacent one eX- treme of its reciprocable movement to be received between and beneath the legs of said die. the extremities of such legs bein initially above the level of said slide and elow the lower extremity of said press, motion transmitting connections adapted automatically to actuate said slide during the relative movement of said members toward and from each other, a source of wire supply carried by said second member, a wire engaging clutch connected with said member, a .sccond wire engaging clutch connected with said slide and adapted for co-operation with said first clutch to advance predetermined lengths of wire during the rceiprocation of said slide, a wire guiding device adapted to receive wire from said second mentioned clutch and connected with said slide for translation therewith, and wire positioning means including a vertically disposed plate laterally spaced from said slide to receive between it and the slidea leg of said die and provided with a horizontal longitudinally extending slot, said Wire being directed by said means through said slot and transversely across said die, whereby the walls of said slot are adapted to co-operate with the adjacent leg of a die in the severing of blanks from the Wire advanced and positioned as aforesaid.

13. In a device of the character described, the combination with a pair of pivoted manually engageable levers, of upper and lower members pivotally connected with each of said levers and guided with reference to said levers for linear movement to and from each ether` a die member reciprocable with refer-` forming operation, work supporting means connected with one of said members, and means for driving through Work supported by said means a staple so formed, all of said means being automatically operable upon the clasp and release of said handle levers by an operator.

14. In a device of the character described, the combination with a tool frame providing a-.longitudinally opening recess adapted to receive the work, of a platen longitudinally reciprocable in said frame, feeding means adapted to advance wire longitudinally of said frame, and guiding means for said Wire arranged to direct it transversely of said platen and of said recess,.said guide means being supported by said platen and movable therewith.

15. In a device of the character described, the combination With a frame member providing a longitudinally opening recess adapted to receive work, of a tubular wire guide having a portion extending longitudinally of said frame member in the direction of said recess, and being curved toward an ultimate direction transverse with respect to said recess, said guide being mounted for reciprocation with respect to said frame member.

16. In a device of the character described, the combination with a frame member providing an anvil and a slide reciprocable longitudinally of said frame member toward and away from said anvil, said slide providing a mandrel: of a wire advancing clutch supported from said slide; and aV guide associated at one end with said clutch and supported for movement with said slide, said guide beino' adapted to receive Wire disposed longitudinally of said frame member and to direct such wire to an ultimate position transverse with respect to said frame member and said anvil.

SVEN SVENSON.

US1610632A 1924-02-04 1924-02-04 Paper-fastening device Expired - Lifetime US1610632A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938212A (en) * 1953-04-20 1960-05-31 Inv S Man Corp Pneumatic tacker
US4453661A (en) * 1980-10-23 1984-06-12 Ivano-Frankovsky Gosudarstvenny Meditsinsky Institut Surgical instrument for applying staples
US4558810A (en) * 1983-12-09 1985-12-17 Richard-Allan Medical Industries, Inc. Surgical stapler construction
JP2013013952A (en) * 2011-07-01 2013-01-24 Max Co Ltd Stapler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938212A (en) * 1953-04-20 1960-05-31 Inv S Man Corp Pneumatic tacker
US4453661A (en) * 1980-10-23 1984-06-12 Ivano-Frankovsky Gosudarstvenny Meditsinsky Institut Surgical instrument for applying staples
US4558810A (en) * 1983-12-09 1985-12-17 Richard-Allan Medical Industries, Inc. Surgical stapler construction
JP2013013952A (en) * 2011-07-01 2013-01-24 Max Co Ltd Stapler

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