US2719971A

US2719971A - Magazine for stapling machines

Info

Publication number: US2719971A
Application number: US205569A
Authority: US
Inventors: Frank S Boroughs
Original assignee: Arrow Fastener Co LLC
Current assignee: Arrow Fastener Co LLC
Priority date: 1951-01-11
Filing date: 1951-01-11
Publication date: 1955-10-11
Anticipated expiration: 1972-10-11

Description

United States Patent Ofiice 2,719,97 l Patented Oct. 1 1, 1.955

MAGAZINE FOR STAPLING MACHINES Frank S. Boroughs, Elmhurst, N. "Y., assignor to Arrow Fastener Co., Inc., Brooklyn, .N. Y., .a corporation of New York Application January 11, 1951, Serial No. 205,569

6 Claims. (Cl. 13)

This invention relates to table type stapling devices.

An object of this invention is to provide in a table type stapler, .a highly improved staple .magazinecomprising a staple magazine body having a bottom wall and parallel upstandingside walls, and astaple guide fixed within said staple magazine body and extending longitudinally thereof, I

said body and ,guide having highly.improvedinterengaging means -.to prevent both longitudinal .and side movement of the guide relative tothe body.

Another object of this inventionis to provide inastaple magazine of the character described, a front .cover fixed to the staple magazine .body..and forming .a passage for staples between thestaple guide and thefront wall of said cover, and interengaging means on the cover and body .to accurately fix the cover.r elative .totthe .body, whereby .accurate width of staplepassageisinsured.

Yet anotherobject of this invention is to provide in a stapling device of -the.characterdescribed, highly improved means for removably interengaging the staple 1magazine to tthe base of thestapling device .for .pivotal .movement relative tosaid base.

'Yet another object of .this invention is :to provide in a stapling device .ofthe character described, .ahighly improved staple magazine which .shall be relatively inexpensive to manufacture, easy .to .assembleand which shall be accurate, 1 practical and .efficient .tola .highdegree in .use.

Other objects of this .invention will inpart be obvious and input hereinafterpointedout.

The invention accordingly .consists .in the features .of construction, combinations of elements, and arrangement of parts, which will .be exemplified in the construction hereinafter described, and .of which .the .scope of :invention will befindicated inthefollowing claims.

'In the accompanying drawings in .whichiis shown variousillustrative embodimentsofthis invention,

Fig. l fis .a ;side .elevational view of .a stapling device embodying .the invention;

'Fig. 2 is a .side .elevational view tof .the .body .of .the stapling device with parts broken .away and .in v.crosssection;

Fig. ."3 'is .a .bottomgilan view of .the staple .magazine;

.Fig. 4 is.a side elevationalview of thestaple casing with theistaple guideremoved;

.Fig. 5 is aside elevational viewiof the staple guide;

Fig. 6 is .a crossesectional view taken on lined-6 of Fig. 1;

Fig. '7 is a partial cross-sectional view taken on .line 7-7 .of Fig.6; i

Fig. (8 is across-sectional view taken .on .line .8-8 .of Fig.2;

'Fig. 9 is a cross-sectional view taken on line EL-9 of Fig. 8;

Fig. 10 is a cross-sectional viewtaken .on line "1;0.T0 of Fig. 1,;

Fig. '11 is a vertical longitudinal cross-sectional view taken through the rear end of'thestapler;

Fig. "12 is aview..similar to Fig. 10 but with the .stap'le magazine removed;

.Fig. 13 ise view similar .to Fig. 11 but with the staple magazine removed;

Fig. 14 is a cross-sectional view taken on line 1414 ofFig. .11;

Fig. .15 is a side elevational view of the staple guide embodying a modified construction;

Fig. 1.6 is a bottom plan view of the structure shownin Fig. 15; and

Fig. .17 .is .a crossvsectional view similar to Fig. 8 but illustrating a modified construction.

Referring nowin detail to .the drawing, 10 designates a table type stapler embodying the invention. The same comprises generally .a base 11, a staple magazine 12, and a driver 13 mounted for reciprocationat the front end of the staple magazine.

T he base 11 comprises a base-member 14 made of die stamped sheet .metal, having a top wall 15, slightly .inclined forwardly and upwardly, and provided with a raised platform 17 atithe forward end on which is mounted the usual staple anvil 18 fitted within a depressed portion 19 of said platform. Near the rear end of wall 15 is ,also a depressed wall 21 for .the purpose hereinafter appearing.

The base member 14 is formed with a downwardly extending flange 22 all around, and said flange has a lower edge .23. Fitted beneath the front end of the base member .14 isa pad 24 of rubber-likematerial on which the front .end of the baseis supported. Fitted within'therear end of the underside of the base is a rear pad 25. The pads 24 .and 25 may be fixed to the base member 11 in any suitablemanner.

The depressed wall 21 (Figs. 11 and 14) isforrned at its forward end with a transverse through slot 27. Said depressed .wallfl21 is further formed rearwardly of the slot .27 with .a through opening .28. It is also formed near its rear end with a through opening: 29. Mounted on the depressed wall 21 of the basemem'ber is a bracket comprising a bottom wall 31 contacting the depressed wall 21, and apair of upstanding parallel side walls 32. The bottom wall 31 is fixed to the depressed wall 21 .by means of a pair of .

rivets

33 and 34. The wall 31 is formed with downwardly depressed detents 35 received within.the.opening.29 inwall.2,1. Wall 31 is alsoformed witha through opening 36 registering with opening 28 in the wall 21. The parallel walls 32 are formed with outwardly pressed portions 37 .forming internal grooves 38. The outwardly pressed port-ions 27 open at the rear edges .39 of :the side walls 32. They comprise furthermore rear portions 40 tapering forwardly and inwardly andterminating-ina rounded head portion 41 for-the purpose hereinafter appearing.

Extending through the registering

openings

28, 36 is a vertical pinAZa provided with a head 44 at its lower end .contacting the underside .of the'wall '21. At the upper end QffPlI1-431S2lSO a head 45.

:Mountedonthe base 11 is amember made of spring steel andcomprisinga front vertical portion 5-1 disposed just forwardly of the side walls 32 and passing through slot 27 in the base :member. .At the lower end of portion'5-1 is a forwardly bent tongue .SZ-engaging the inside of the .basemem'ber 11. Extending irearwardlyfrom the upper end of "the front port-ion 5 1 is a somewhat downwardly inclinedportion or arm 53formed witha through opening 54 through which the pin 43 passes. The upperhead 45 of said pin contacts the upper surface of-saidportion or arm53 of said spring member 50. Extending rearwardlyfrom portion 53is .a .somewhat upwardly inclined portion or arm 55. .The apex or junction 56 .between portions .53 and 55 is substantially aligned with theihead portion 41 of the outwardly pressed portion 40.

At the rear end of'portion 55 is a bent Ihandle portion 57. Thehandle portion '57 .is disposed ,rearwardly of the side walls 32. It will be noted that the handle portion 57 may be depressed. Surrounding the pin 43 and resting on wall 31 and disposed between said wall 51 and the underside of portion 53 of spring 50 is a conical shaped coil spring 58. The base of the coil spring 58 rests on wall 31, whereas the small upper end of the coil contacts the underside of said portion 53. When the handle 57 is depressed coil spring 58 is compressed. When said handle 57 is depressed the junction 56 moves down below the head portion 41 of the grooves 38. When pressure is released from the handle 57, the spring 58 urges

portions

53, 55 upwardly for the purpose hereinafter appearing.

The magazine 12 comprises a magazine body 60. Said magazine body 60 comprises a bottom wall 61 from which there extends upwardly parallel side walls 62. Extending inwardly from the upper ends of the side walls 62 are top flanges 63. Top flanges 63 extend to the front ends of the side walls 62, but terminate short of the rear ends thereof. The rear ends of the side walls 62 are inclined downwardly and rearwardly as at 64. The bottom wall 61 terminates snort of the forward ends of the side walls 62 forming a front end edge 66 (Figs. 3 and 7) having a width less than the width of said bottom wall61, and being centrally located with respect thereto, and forming a tongue 67. Said tongue 67 has end edges 68 (Fig. 3). Extending from the end edges 68 are parallel shoulders 69 disposed rearwardly of the front edge 66. The side walls 62 have front edges 70. (Fig. 4) and are formed rearwardly of their front edges and at their lower ends with notches 71. The rear ends 72 of said notches 71 are aligned with the edges 69 of the bottom wall. The front ends 73 of said notches 71 are disposed somewhat forwardly of edge 66 of tongue 67. Said side walls have downwardly extending parallel tongues 74 extending down substantially to the level of the undersurface of the bottom wall 61.

Forwardly of the rear end of the magazine body 60 said body is formed at its underside with a cut away portion 75 forming a transverse forward edge 76 (Fig. 3) extending transversely of the bottom wall 61 and disposed parallel to the rear edge 76a of said bottom wall. Said bottom wall is further formed at the forward end of the cut out 75 with a rearwardly extending tongue 77 having a rear edge 78. The tongue 77 is centrally disposed and is of less width than the bottom wall 61. Said tongue 77 has end edges 79. The forward ends of the end edges 79 are interconnected with the side walls by aligned rear edges 80.

Extending downwardly from the side walls 62 are parallel ears 81 disposed in the planes of said sides and between the

edges

76 and 78 and spaced therefrom. Said ears 81 may be made from the material cut out from the bottom wall. In other words, the bottom wall may be slit to form a pair of ears which are then pressed into the planes of the side walls 62. The ears 81 are formed with aligned apertures 82. Extending through said cars is a pivot pin 83 having portions 84 projecting beyond said ears. Said pin 83 is fixed to the cars 81 in any suitable manner. It will be noted that the pin 83 is disposed mainly below the plane of the bottom wall 61.

In engaging the magazine 12 with the base, the handle 57 is depressed to permit the projecting portions 84 of the pin 83 to enter the grooves 38. Said projecting portions 84 of the pin 83 are pressed forwardly until they enter the head portion 41, and in such position the spring member 50 presses the pivot pin forwardly to retain the extended portions 84 of said pin 83 within the upwardly notched head portion 41. In such position, as shown in Fig. 1, if the forward end of the magazine body is pressed downwardly for stapling operation, as will appear hereinafter, the forward end of spring 50 will be depressed as member 50 is rocked substantially about the junction 56, thereby depressing the conical spring 58. Upon release of the magazine body 61 after the stapling operation, the spring 58 will raise said magazine body 61 and swing the same upwardly in a clockwise direction, looking at Fig. 1.

The magazine may be removed from the base by depressing the rear end of the magazine to release the pivot extensions 84 from the notched head 41 and by then moving the magazine body rearwardly from the grooves 38.

Extending forwardly from the inner edges of the flanges 63 at points spaced from the forward ends of the magazine body are upwardly extending webs 85 (Figs. 4 and 6) parallel to one another and extending outwardly therefrom are shoulders 86 from which there extend upwardly parallel walls 87 formed at their front ends with aligned inwardly extending flanges 88. One of the walls 87 is formed with a round opening 89 and the other with a square opening 89a aligned therewith. The walls 87 are furthermore formed near their upper end with a pair of aligned openings 89b for the purpose hereinafter appearing.

Fixed within the magazine body 60 is a staple guide 90. Said staple guide 90 extends longitudinally of the magazine body. It comprises a top wall 91 and parallel side walls 92. Its rear end is coextensive with the rear end of the magazine body 60. Its forward end is coextensive with the forward end of the magazine body 60. The top wall 91 is spaced below the top flanges 63. Its side walls 92 are spaced inwardly of the side Walls 62 of the magazine body 60. Thus between the staple guide 90 and the side walls 62 and top flanges 63 of the magazine body 60 is formed a longitudinal passage for U-shaped staples.

Tongues 94 are cut from the top wall 91 and depressed and contact raised perforated portions 95 on the bottom wall 61 of the magazine body 60 and said tongues 94 are riveted to the upwardly pressed portions 95 by means of rivets 96.

At the forward end of the side walls 92 are downwardly extending tongues 97 (Fig. 5) which engage the opposite edges 68 of the tongue 67 (Fig. 3). The rear ends 98 of the tongues 97 contact the shoulders 69. The lower edges of the tongues 97 are substantially at the level of the undersurface of the bottom wall 61. Said side walls 92 are furthermore formed forwardly of their rear ends with a pair of parallel downwardly extending tongues 99 which contact the side edges 79 of the tongue 77 (Fig. 3). The forward ends of the tongues 99 contact the edges or shoulders 80 of the bottom wall 61. The engagement of the

tongues

97 and 99 with the tongues 67 and 77 prevent side movement of the staple guide relative to the magazine body. The engagement of said

tongues

97 and 99 with the

edges

69 and 80, respectively, prevent longitudinal movement of the staple guide 90 relative to the magazine body 60. Thus accurate positioning of the staple guide relative to the magazine body is assured with such construction. With such construction furthermore, the positioning of the front end of the staple guide flush with the front end of the magazine body is assured.

Fitted over the front end of the magazine body 60 is a front cover 100 having a front wall 101, and parallel side walls 102. The front wall 101 is formed with parallel side shoulders 103 contacting the front edges 70 (Fig. 3) of the side walls 62 of the magazine body 60. Between the shoulders 103 is a vertical front wall portion 104 spaced forwardly of the shoulders 103 and hence forwardly of the front edges 70, and hence also forwardly of the front edges of the staple guide 90. With such construction there is formed between the front end of the magazine and the front wall 104 a throat or passage 105 through which staples may be driven, in the manner to be described hereinafter.

The front wall portion 104 is formed with a longitudinal forwardly recessed portion 106 for the purpose,

hereinafter appearing. The side walls 102 of the front cover 100 have lower edges 108. Said side walls 102 are formed with upwardly extending slits 109 and the portions 110 (Fig. 6) :between saidslits 109 are pressed inwardlyout of the plane :of the side walls 1021t form lugs. Said lugs 110 are received within the notches 71 (Figg lh in the side walls 62 for accurately "locating the front cover relative to said magazine body. Said side walls 102 are furthermore formed with aligned through openings '111 registering with the openings 89b inthe side walls87. Extending through-the registering openings-89b, 111 is a :transversepivot pin 112 :riveted over at its ends forfixing'the front cover to the magazine body 60.

.At the upper end of the frontwall 101 is a rearwardly projecting tongue 114. The :driver 13 comprises a hollow stem 1'1'5 slidably mounted within the front cover 101') and disposed between the front wall 101 and flanges 88. The stem 115 extends down intothe front cover 100 through theupper-end thereof. Said stern 115 comprises a front Wall 116 formed with longitudinal slit 117. It further comprises side walls 118 from "which extend aligned spaced flanges 120. The .lip or-tongue 114 projects into the slit 117 to guidethe up and down movement of the driver and to limit the reciprocation thereof.

Attached to the front surface of the front wall 116 as by means of :rivets 1 21wis a plunger "blade 122 which is adaptedto move down through the passage to drive staples downwardly against the anvil 18. The heads of the rivets 121 move through the groove formed by the recessed portion 106 and the frontwall portion 104. Attached to the upper end of the stern is a knob 125. Mounted on the forward ends of the flanges 63 of the staple housing .is a plate 126 formed with an upwardly extending lug and mounted on said .plate 126 is a coil compression spring 127 which passes upwardly through the stem 115. Fitted within the upper end of the stem 115 is a frame 128 havingfront and rear walls, the front wall of which covers the slot 117. The upper end of the coil spring 127 is received between the walls of said frame 128. The .upstandinglug .01'1 .the plate 126 is received within the lower end of the .coil .spring 127.

Itwill now be understood that when the knob is pressed downwardly the spring 127 is compressed and the plunger blade 122 will drive the staple. When pressure isreleased from the knob the spring 127raises the driver.

.Slidablymounted on the staple guide .90 is a staple strip pusher 130 which may be connected to one end of a strip spring 131. The strip spring is wound around ta shaft 132, the ends of which are received inzwthe .openings 89, 89a. One end of said shaft may be squared and is received in the square opening 89a so that said shaft does not rotate.

The inner end of the coil strip spring 131 is fixed to the shaft 132 in any suitable manner. A cover 135 may be fitted over the top and rear sides of the cover and fixed in position in any suitable manner.

In Figs. 15, 16 and 17 there is illustrated a modified construction. In Figs. 15 and 16 there is shown a staple guide 90a which may be assembled with the staple magazine body 12, such as is described hereinabove. The bottom wall 91a has upwardly extending parallel side walls 92a. The bottom wall 91a rests on the bottom wall 61 of the staple magazine body and is riveted thereto by rivets 96a. The side walls 92a are spaced inwardly from the side walls 62 of the magazine body. The upper edges of said side walls 92a are spaced below the flanges 63, to form a space through which the staple strip may pass. Said side walls 92a are formed with downwardly extending tongues 97a and 99a which engage opposite sides of the tongues 67 and 77 respectively. The forward tongues 97a engage the opposite edges 68 of the tongues 67 and also engage the shoulder 69. The tongues 99a engage opposite edges 79 of the tongues 77 and also engage the shoulders 80. Thus the staple guide 90a is the same as the staple guide 90, except that the former has a bottom wall instead of a top wall. Otherwise, the two staple guides function in the same manner.

Itwillxthus be seen that there is provided a device in which the several objects of this invention are achieved and which :is well adapted to meet the conditions of practical use.

As various possible embodiments might be {made of the above invention, and as various changes might be made in the embodiment above set forth, it istobe understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention lclaim as new and desire to secure by Letters Patent:

1. In a stapling device, .astaple magazine comprising amagaz'ine body having a bottom wall, parallel sidewalls on said 'bottom wall and inturned flanges on the upper ends of said sidewalls, a staple guide arranged longitudinally of and within said magazine 'body-andhaving parallel side walls spaced inwardly from the side walls of said magazine body, said bottom wall of sa'id rnagazine body being provided with a pair of oppositely extending tongues and shoulders on opposite sides of 'said tongues, the side walls of said staple guide being pro vided with a plurality of depending tongues engaging opposite sides of said central tongues and conta'ctingsaid shoulders.

2. In astapling device, a staple magazine comprising a magazine body having a bottom "wall andpara'llel side walls extending upwardly from said bottom wall, and'top flanges extending inwardly from the upper ends of said side walls, and a staple guide fixed within said magazine body .and extending longitudinally thereof, said staple guide comprising parallel sidewalls spaced inwardly from the side walls of the magaz'ine body, said bottom wa'llo'f said magazine body being provided at its forward end with a forwardly extending central tongue spaced from the forward ends of the side walls of said body, and with shoulders on opposite sides of said forwardly extending tongue, the side walls of said staple guide 'being formed with a pair of downwardly extending tongues engaging opposite sides of said central tongue, and the rear ends of said pair of tongues contacting said shoulders, the forward ends of said side walls of said staple 'guide being in the plane of the-forward ends of the side walls ofsaid magazine body, said bottom wall of said body being formed with a central rearwardly extending central tongue and with shoulders on opposite sides thereof, andthe side Walls of said staple guide being provided with another pair of downwardly extending tongues contacting opposite sides of said rearwardly extending tongue and engaging said last mentioned pair of shoulders.

3. In a stapling device, a staple magazine comprising a magazine body having a bottom wall and parallel side walls extending upwardly from said bottom wall, and top flanges extending inwardly from the upper ends of said side walls, and a staple guide fixed within said magazine body and extending longitudinally thereof, said staple guide comprising parallel side walls spaced inwardly from the side walls of the magazine body, said bottom wall of said magazine body being provided at its forward end with a forwardly extending central tongue spaced from the forward ends of the side walls of said body, and with shoulders on opposite sides of said forwardly extending tongue, the side walls of said staple guide being formed with a pair of downwardly extending tongues engaging opposite sides of said central tongue, and the rear ends of said pair of tongues contacting said shoulders, the forward ends of said side walls of said staple guide being in the plane of the forward ends of the side walls of said magazine body, said bottom wall of said body being formed with a central rearwardly extending central tongue and with shoulders on opposite sides thereof, and the side Walls of said staple guide being provided with another pair of downwardly extending tongues contacting opposite sides of said rearwardly extending tongue and engaging said last mentioned pair of shoulders, and a front cover for said staple magazine comprising a front wall contacting the front ends of the side walls of the magazine body, and said front cover having side walls receiving the magazine body therebetween, said side walls of said magazine body being formed with notches, and the side Walls of said cover being formed with integral lugs received within said notches, said front wall of said cover having a front wall portion spaced from the forward end of said staple guide forming a passage therewith for staples to be driven therethrough.

4. In a stapling device, a staple magazine comprising a magazine body having a bottom wall and parallel side walls extending upwardly from said bottom wall, and top flanges extending inwardly from the upper ends of said side walls, and a staple guide fixed within said magazine body and extending longitudinally thereof, said staple guide comprising parallel side walls spaced inwardly from the side walls of the magazine body, said bottom wall of said magazine body being provided at its forward end with a forwardly extending central tongue spaced from the forward ends of the side Walls of said body, and with shoulders on opposite sides of said forwardly extending tongue, the side walls of said staple guide being formed with a pair of downwardly extending tongues engaging opposite sides of said central tongue, and the rear ends of said pair of tongues contacting said shoulders, the forward ends of said side walls of said staple guide being in the plane of the forward ends of the side walls of said magazine body, said bottom wall of said body being formed with a central rearwardly extending central tongue and with shoulders on opposite sides thereof, and the side walls of said staple guide being provided with another pair of downwardly extending tongues contacting opposite sides of said rearwardly extending tongue and engaging said last mentioned pair of shoulders, and a front cover for said staple magazine comprising a front wall contacting the front ends of the side walls of the magazine body, and said front cover having side walls receiving the magazine body therebetween, said side walls of said magazine body being formed with notches, and the side walls of said cover being formed with integral lugs received within said notches, said front wall of said cover having a front wall portion spaced from the forward end of said staple guide forming a passage therewith for staples to be driven therethrough, said magazine body being provided with a pair of upstanding walls formed with aligned openings, and the side walls of said cover being formed with openings registering with said openings in said upstanding walls, and a pin passing through said registering openlngs.

5. In a stapling device, a staple magazine comprising a magazine body and a staple guide fixed within said body and extending longitudinally thereof, said body having a bottom wall, parallel side walls extending upwardly from said bottom wall, and flanges extending inwardly from the upper ends of said side walls, said bottom wall being formed with two symmetrically disposed tongues in the plane thereof, each tongue extending towards an end of said body and spaced from said end, and having parallel edges, said bottom wall having opposite transverse shoulders adjacent said parallel edges, said' guide having a top wall, parallel side walls extending downwardly from said top wall, each of said last mentioned side walls being formed with a pair ofspaced tongues in the plane thereof, the tongue of said guide engaging opposite parallel edges of the tongues of said body for centering said guide within said body, and said tongues of said guide contacting said shoulders to locate said guide longitudinally of the body.

6. In a stapling device, a staple magazine comprising a magazine body having a bottom wall, parallel side Walls on said bottom wall and inturned flanges on the upper ends of said side walls, a staple guide arranged longitudinally of and within said magazine body and having parallel side walls spaced inwardly from the side walls of said magazine body, said bottom wall of said magazine body being provided with a pair of oppositely extending tongues and shoulders on opposite sides of said tongues, extending outwardly therefrom and through the side walls of said magazine body, the side walls of said staple guide being provided with a plurality of depending tongues engaging opposite sides of said central tongues and contacting said shoulders, and a cover embracing one end of said magazine body and having inwardly extending lugs abutting said shoulders.

References Cited in the file of this patent UNITED STATES PATENTS 1,994,567 Cavanagh Mar. 19, 1935 2,271,926 Pankonin Feb. 3, 1942 2,277,347 Pankonin Mar. 24, 1942 2,310,529 Krantz Feb. 9, 1943 2,311,412 Pankonin Feb. 16, 1943 2,445,180 Maynard July 13, 1948 2,472,032 Wandel May 31, 1949 2,487,565 Leber Nov. 8, 1949 2,487,566 Leber et al. Nov. 8, 1949