US2520909A - Stapler - Google Patents

Description

spf. 5, 195o ...,F. CAVANAGH 2,520,909

STAPLER Filed Aug. 16, 1947 HUH' Il l 22 22 .l/ "Wm/9 /4 lo A 2 1 ii 3 1 FW 2! /3 Patented Sept. 5, 1950 UNITED STATES PATENT OFFICE 2.529.909 STAPLR John F. Cvangh, Providence, a. I., assign@ w Speed Products Company, Ini:;,A New York,` N. Y.,

a. corporation of New York Assiidii gsf is, 1947, serial' No. 769,624

1o claims. (Cl. r-s) This invention relates to impfsvemms if. stanling devices'b'Qn-H til-'ized vfor A'fa'Siie'iigf together paper and 'other sheets s'euring tags and labels to articles, for tasking 'printed xttr to billetin boards; and 'in general Vfo'r various fastening or stitching nrbo'se.

'le p'inari bjt of invention' isto firevide a portable fastener of Asi'z'nlole and fnaet design 'when sin @weleens 'si-,asie tegame@ rsheets; of peper, cloth aha 'the like and use fr-lenen as a tacler.

Another object is to provide a fastener-Manly# ing ir'iplement adapted to be readili' 'pe'ate'd b5 tnuinbp're'ssrevlile field in one Hand;

Another object is 'to wrvid 'fastenrlapplyl ling devie having 'a staple eli-nehme fii'ember Whieh can be stvng laterll to bei-init the de' vice to be used as a tacker. g

Another object is to provide a devi'e having a U-sl'fiaped sheath for the 'forward 'enel of the staple niega/'zine to 'at fas elosure and also as a guide for the' staple lriv'r.

Further objects 'and advantages oi rnS device `vili-ll be'eome apparent as this deseibtin pro'- ceds.

lIn the accompanying draviingsjvlei'in I have ll'strated a preferred enbdinent of mv invention:

Figure l is a 'side 'elevation view of 'rios l'dei/ide, shown partly brkenawa';

Figure 2 is a perish ei/ive showing hovv in'y devicemav bbprated in ifastfjaiiirg together i several Sheets of fiaier or the like.

Figure 3 S a Si'd View 'f IY with elle linchingarm swungbaok to perlnit the ldev'i'oe to'be 'used 'in taokiigoijeratins; Y A A Figure l is a kzvlafn view shv'ling the lstaple driving am swung at right anjgies 'to the stapler body to 'permit revnval `of tiiepli'sher asesenbly'ir loading la stiek of stables into the 'rear end jof the stable rnaga'zine.4

Figure 8 tis a ffiagiientary bersfeetive :detail of the forward vend 'of the f's'taple drivin arm.

Figure 9 is an enlarged plan View, pai-tlv inseetion, of the forward ei'd of 'the fstaple magazine, and

Fig. 1o Ais enlarged view Jon the line *HJJI'O 'of Fig. --1.

=Referr'iig to the draw-ings l have indieated at EB a 'Staple f'agie; blefeabl'y f 'Sheet metal, fore'd retaflarchanel shape 'and with intun'ed longitudinal age's H, afs' indi'ated in Fig. 6 and Fig. 9; so as' to slid'ably hold a sta'fk of attached stables S and imsitivelir eonne said stack again-'st lat'e'a-l ard uiiward displacement.

Referring to F'S. 1 and 9, it Will be Seen 'that the forward end of the 'stable magazine Hi is provide'd vith an 'pturned lip il?, for a purpose to be later eiplained, and that the side W'alls 'i3 of staple vmagazine l@ 'eiite'ii'd beyond lip 'I2 a diss- 'tanee suostant-irall'y e'orresponding t'o the tinck'- iie'ss 'of a staple; While the foremost 'ends o ilanges il,` are flsh .With the 'outside 'Slfae bf lip i2.

suitably attached to 'the forward end oi staple 'magazine m is 'a u-shaped sheath nl (detailed in Fig. 7) vWhich provides with the side vi'lallsY f3 and lip r`I2 of n'laga'zine 'lil a staplev chute or PIIO'Q/ T;

Assoei'ated with staple magazine Hl is a staple driving arm f generally denoted l5, preferably n'aele lof spring ste-el and preferably formed 'at its forward end as shown in Fig. y8. The thickness of arm l5 is considerably 'greater than the thick@ ness oi a rstaple and hence the staple 'driving end 'of said arm is reduced in thickness as at I6 to dimensions which permit its free `entry into the vstap'rle receiving throat T, Vslie'a't'h lli being provided ivit-'h extended portions or stop shoulders il 'of -sueh interior Width as to for1n a l.guide .gior the staple driving end of arm l5. y

The rear 'end of arrn vPi is provided with the aruate portion A t' cover vthe rear' end or part of staple magazine iii and has 'its lower eem- Ilvlel'llelflt o`r brafn'h L fi'vtally or A'Irioi'ffabl :atta'ehed to 'the under side YVof s'aid staple rnfagaz'ine by rivet 18 fifn suelo manner as fto {fieri-nit Staple arm I5 to iSv/'ing' 'at right angles to Vistaole magazine (See Fig. '4), alter tl'lfstafirl ''ving 'e'Ild i6 of said arn is IfL-ised from lits nrfral posi'- tih Within Sad Staple 'magazine an@ vlifted Cl'ei ofthe sides there-of. Sl'idable l'n'g'tdfnally Within 'staple f ii@ is a staple DUS-her T9 (see Fig. v5)-, 3p' yforned froi "sheet metal. Pusher I9 is sli'dably mounted 'upon V'pusher rod 20. It slides feel'y within stable magazine 'l 0, 'and lis vfpre-.vented from upward 'disengagement therefrom 'by the in'- turned flanges Il of said tube.

Monted between the lpu'she'r an'd "the fixed end -plate'or stop A'22 upon `pusher rod 2i! is a normally expanded:helicoidalfisherspring 21 4for'normally urging. the slidablyguidedliiusherforwardly., that is, towards throat T. End .blaite -22 -s rigidly ttt-- tached to the rear end of rod 20 and as shown in Fig. 6, is substantially of T shape so as to removably engage within and be retained by notches 23 (see Fig. 4) in the top portions of the side Walls I3 of magazine ID. When arm I5 is in its normal position for driving staples (see Fig. 1) said arm prevents end plate 22 from disengaging or unlocking from the notches 23 in staple magazine I0.

Pivotally attached to the under side of staple magazine I by rivet 24 is an offset swingable clincher bar or base 25, provided at its forward end with conventional staple clinching recess means 26 in alinement with the driving end of staple driving arm I5. The opposite end of clincher base 25 is provided with a, detent 2IV (see Fig. 1) which engages a hole 28 (see Fig. 10) in the bottom of staple magazine IIJ for the purpose of holding clincher base 25 in proper alignment with the staple driving end of arm I when the device is used in stapling operations.

In loading my improved stapling device, the forward end of arm I5, that is, its upper complement or reach U is slightly raised from engagement with, namely, removed from the staple magazine I0 and thereafter swung laterally to the position shown in Fig. 4. End plate 22 is then disengaged from notches 23 of staple magazine Ii'l, and the pusher assembly, shown in Fig. 5, is withdrawn rearwardly and out of the magazine. A stack of attached staples S is then slid into the rear end of staple magazine I0 and the pusher assembly is reinsertedV into said magazine behind said stack of staples. End plate 22 is then interlockecl with the walls of the notches 23 of staple magazine Il) and driver arm I5 is swung back and restored in the magazine whereby its forward end is again slidably guided in the throat or staple raceway T.

Should it be desired to use the implement for tacking operations, such as attaching posters to board surfaces, clincher offset base 25 is swung rearwardly to the position shown in Fig. 3 when staples may be driven into wood or the like by striking the driving end of staple driving arm I5 with the heel of the palm of the hand.

It will be seen that my improved stapling device is of compact design so as t0 be readily car-n ried in the pocket, and that its construction permits it to be readily converted from a stapler to a tacker. It will further be seen that my fastener-applying implement is positive and reliable in action accurately guides the feed of the staples, and is easy to reload, thus meeting all the requirements for a portable stapling tool of high utilitarian value. Y

By the present arrangement the resilient staple driving arm I5 is normally in a raised position as indicated in Fig. l with the blade I6 thereof just slightly above guide lip or race block I2 to permit reception of the foremost staple of the stack S into the throat or raceway T due to the action of the slidable pusher or follower I9 which is prevented from removal from the forward end of rod 2@ by the upset end E (Fig. 5).

As previously stated, base 25 pivots on the fixed fulcrum pin 24 fastened to the bottom wall of the magazine. Specifically however this base is also detachably locked to the base due tothe action of struck out detent 21 snapping into aperture or opening 28.

With the driving blade I6 slidably guided in sheath I4, the latter is prevented from rotation relative to the magazine although the blade I6 may be downwardly displaced to eject the foremostl staple from the throat upon the application of a downwardly directed pressure on the biased or upper component U of the one piece operating arm I5 which is normally held in a raised position by the arcuate or externally convex and internally concaved bridge portion A, integrally merged with the upper and lower components or reaches U and L which closely straddle the open rear end of the magazine.

While I have disclosed a preferred embodiment of my invention, it will be understood that vari, ous modifications in its construction may be made within the spirit and scope of my invention as defined by the appended claims.

Iclaim:

1. In a fastener-applying implement, a magazine having staple guiding means defining a throat at one end and having an opposite end open, a resilient staple-driving arm mounted upon said magazine and normally straddling said open end, and means wherebyA said driving arm may be laterally displaced relative to said magazine for enabling asupply of staples to be inserted into said open end.

2..VI n a device of the character described, a staple magazine adapted to slidably receive a stack of attached staples and having a stapledischarge throat across one end thereof and an open but opposite end, a staple pusher slidable longitudinally within said magazine, and a staple driver having a driving end alined with said throat for severally driving said staples, said driver having means straddling said open end and having branch means disposed along a lower wall of said magazine, means pivotally holding said branch means to said magazine to provide for bodily displacement of said arm laterally of said magazine.

3. In a device of the character described, a tubular staple magazine adapted to slidably receive a stack of attached staples and having a staple-discharge throat across one end thereof and provided with an opposite open end, a staple pusher assembly comprising a rod, a member slidable within said magazine on said rod, a locking member attached to said rod adapted to be removably retained by said magazine,. a staple driver along the upper part of said magazine and havinga depending end adapted to drive staples from said throat and having an arcuate portion straddling said open end, means movably attaching a lower part of said driver to said magazine, and said driver constituting means guarding said locking member against removal from said magazine. y

4. In a stapling machine, a magazine having a bottom wall and spaced sides defining a channel for slidably guiding a stack of staples, means at the forward end of said channel and characterizing a staple raceway, spring controlled follower means for urging said stack towards said raceway; driving means comprising an upper component above said channelV and including depending means liftable into and out of said magazine and slidably guided in said raceway for ejecting a staple from the latter,l a lower component disposed along the bottom wall of said magazine; and bridge means about the rear end of said magazine integrally interconnecting said upper Vand lower components; and means movably holding said lower component to said bottom wall. l

5. In a stapling machine, a, magazine having a bottom wall and spaced sides defining a chanat the forward end of said channel and chars2 acterizing a staple raceway, spring controlled follower means for urging said stack towards said raceway; driving means comprising an upper component above said channel and spaced from said sides and extending beyond the rear end of said magazine and including depending means liftable into and out of said magazine and slidably guided in said raceway for ejecting a staple from the latter, a lower component disposed along the bottom wall of said magazine, and arcuate bridge means about the rear end of said magazine and integrally interconnecting said upper and lower components; and means pivotally holding said lower component to said bottom wall.

6. In a stapling machine, a magazine having a bottom wall and spaced sides defining a channel for slidably guiding a stack of staples, means at the forward end of said channel and characterizing a staple raceway, spring controlled follower means for urging said stack towards said raceway; one piece resilient driving means comprising anv upper reach above and overlying said channel and extending beyond the rear end of said magazine and including depending means liftable into and out of said magazine and slid ably guided in said raceway for ejecting a staple from the latter, a lower reach disposed along the bottom wall of said magazine; and outwardly convex and inwardly concaved bridge means about the rear end of said magazine and vintegrally interconnecting said upper and lower components; and means pivotally connecting said lower component to said bottom wall for bodily swinging said driving means to one of said sides When said depending means has been lifted out of said magazine.

'7. In a stapling machine, a magazine for supporting a stack of staples, a one piece U shaped member straddling said magazine comprising a biased upper reach sloping forwardly and upwardly away from and above the rear part of said magazine, a lower reach for supporting said magazine, curved bridge means integrally connecting the rear ends of said reaches for normally holding said upper reach elevated, means movably securing said magazine to said lower reach, and a driving blade integral with said upper reach and depending from the front end thereof for expelling the foremost staple of said stack from said magazine.

8. In a stapling machine, a magazine for supporting a stack of staples, a one piece U shaped and relatively thin sheet metal member straddling said magazine comprising a biased upper reach sloping forwardly and upwardly away from and above the rear part of said magazine, a lower reach for supporting said magazine, outwardly convex and inwardly concaved bridge means about said rear part and integrally connecting the rear ends of said reaches for normally holding said upper reach elevated, means movably securing said magazine to said lower reach, and a driving blade removably associated with said magazine and integral with said upper reach and depending from the front end thereof for expelling the foremost staple of said stack; from said magazine.

9. In a stapling machine, a magazine for supporting a stack of staples, a one piece U shaped member straddling said magazine comprising a biased upper reach sloping forwardly and upwardly away from and above the rear part of said magazine, a lower reach for supporting said magazine, curved bridge means about said rear part and integrally connecting the rear ends of said reaches for normally holding said upper reach elevated, a driving blade integral with said upperreach and depending from the front end thereof for expelling the foremost staple of said stack from said magazine, and means pivotally securing said magazine to said lower reach to allow swinging of said member bodily and laterally of said magazine.

10. In a stapling machine, a magazine for supporting a stack of staples, a one piece U shaped member straddling said magazine comprising a biased upper reach extending substantially the entire length of said magazine and sloping forwardly and upwardly away from and above the rear part of said magazine, a lower reach for supporting said magazine, outwardly convex and inwardly concaved bridge means about said rear part integrally connecting the rear ends of said reaches for normally holding said upper reach elevated, means pivotally securing said magazine to said lower reach to permit said magazine to be swung laterally of said member, and a driving blade integral with said upper reach and depending from the front end thereof for expelling the foremost staple of said stack from said magazine.

JOHN F. CAVANAGH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,251,917 Crosby -s Aug. 12, 1941 2,264,322 Maynard Dec. 2, 1941 2,296,574 Rodgers Sept. 22, 1942

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