US1430048A

US1430048A - Stapling machine

Info

Publication number: US1430048A
Application number: US490487A
Authority: US
Inventors: Howard G Allen
Original assignee: J L MORRISON Co Inc
Current assignee: J L MORRISON Co Inc; J L MORRISON COMPANY Inc
Priority date: 1921-08-08
Filing date: 1921-08-08
Publication date: 1922-09-26
Anticipated expiration: 1939-09-26

Description

H. G. ALLEN.

STAPLING MACHINE. APPLICATION FILED was, I921.

130,048 Patented Sept. 26, 1922 if 732Gb 37 :"W" V, O 2%" In we)? 70? saidstapleends up flat against the. matep I innate arm entice. i

nowann e. IALLEBLOF nreeenaranrsninir Yonn. ASSIGNQR To turn a. L.

MORRISON COMPANY, rnc., -or nraeane. rams, new YORK, A' CORPORA- TION OF NEW SIDE/Kr Application filed August 8;

State of New York, have invented new and useful Improvementsin Stapling lvlachines of which the following isa specification. I ".ljhis invention relates to a stapling machine for driving U shapedwire staples through magazines, boXes,' filled-up bags, l v

below the said bonnet 1O is the foresaid etc, and relates more particularly to iniprovements in the type of machine known'as' the closed head stitcher.

One of the objects of the invention is to produce ;a"s1mple and inexpensivebut reliable means of clenching the staple in such away as to first bend the endsofthe staple inwardly by means ofa rotary'niovement of theelenchers and thereafter to compress rial (through which the staple is being driven) by means of a longitudinal; parallel movement of said 'clenchers. A furtherob-j jecjt of the invention is to produce a stapling machine construction in which near 1cmisa fragmentary front elevation of-the inrproved "stapling machine showing merely a portion'of the bonnet or head and a, portion of the clencher mechanism tlmreof with a typical piece of work (such as a magazine) shown therebetween prior tothedriving of I p I q p I I "1, the staplestill rests inlits guide 12, and

the staple therethrou-gh. Figure 2is a similar fragmentary elevation but with the parts in a 'more advanced position and with the staple already drivenlthrough the worleand part ly clenched. Figure is a similar "frag-' mentary elevatiomwith the parts in their final position and with'the staple completely I clenched. Figure e is atop plan view of the clenching mechanism taken on line ife, Figureb is a vertical, transiverssecs taken on line 55,"Fig. 1. p v

Similar characters of reference refer" to like parts throughout the' severail" views. I In its general organization, this improved stapling machine comprises theusual bonnet or head 10, which is vertically slidably mounted in the upper part of the main frame (not shown) of themachine, and aclencher.

box 11 which is stationary and is connected tionthrough the said clenching inechaniisin srArtrne MACHINE.

1921. Serial 1T0. 490,48'?. 1

to the lower'part of the main frame of the machine. Arranged to slide vertically in a" suitable guide 12 of the bonnet '10,) is the usual power driver 13 which operates to drive the staple 14 out from its engagement with the aforesaid guide 12 and down "through the horizontal folds of the maga' zine, box painp'hlet, filled-up bag, or other piece 'of work 15 which is being bound together by said staple 14:. Arranged centrally clencher box 11 which consistsof rear plates 16,'a front plate 17 and a pair of intermedi-x ate spacing plates 19 whose internal edges have an irregular comm; all of said plates being suitably retained in proper relation to v each other by-stud pins 20 and securely and detachably held together by cap screws 21.

Arranged between the front and rear plates 17and 1 6, respectivelys and withinthe irregular hollow space intermediate of the spacingplates l9,-are loosely and slidably arranged two companion identically-shaped, flat clenchers'22 of 'bell cran'kor L shaped form. Arranged below. said clenchers and I vertically slidable within the clencher box or cas'ing 11 is a clencher lifter 23' whichis connected by means offalrivet 24: or, other 'wise to a power driven pii'sh'rod-IS, suitably. driven by means not shown but in" proper synchronism with the" rest of the inachine', "and "of course, suitably slidably mounted in the lower part ofthe of the machine.

main frame In the position of the parts shown in Fig.

the clencher lifter 23 is in its lowermost the outer portions of each of the clenchers issupported by reason of the engagement of fthe 'lower face or edge of its pivot head '26 with theupper edge of a pivot ledge '27 formed in each of thespacing plates 19 The first stapling operation of the machine {is the power-actuated depression of the head or' bonnetflO, and thereafter the power-actuated depression of the driver 13 which causes the PU shaped staple 14.1 0 be driven vertically{downwardly with its two ends 'orlegs extending vertically downwardly below the lower surface of the inaterial 15bcing stapled 'lhe; neXt operation of the machine is the power actuated elevation mentioned pivot ledges 27.

and act to center the ends of the staple and operate to bend the same upwardly and inwardly toward each other to the position;

shown in Fig. This last-mentioned movement of each of the clenchers 22 is a rotarymovem'ent about its pivot head 26 as a fulcrum (or approximate center of rotation) said fulcrum being the co-action between the said pivothead 26 and the companion ledge 27 upon which said head rests. In F ig. 2 the two clenchers 22 are shown with the entire length of their upper arms lying fiat upon the upper flat surface or end of the clencher lifter .23. The next movement in the staple driving and clenching operation is a straight, upward movement of'the'i shapedclencher lifter 23, the straight upper arm of each of the clenchers continuing to rest flatly upon the flat upper face or edge of the said clencher lifter. Sucha movement is rendered possible by a vertically extending clearance notch 38 formed directly above each of the afore- In this manner the clenchers 22 are given a direct longitudinally upward movement (not a rotary movement) thereby finally clenching the legs or ends of the staple 13 flat and. straight up against the lower flat face of the material being stapled. In this mannerthe sharp pointed ends of the stapleare positively and firmly driven up flush into the body of the material being stapled, so that there is no danger of said staple points becoming caught in a persons clothing, etc.

The construction of the entire clenching mechanism is such that the actual clenching operation causes the legs of the staple 1a to be first bent inwardly toward each other and thereafter crushed upwardly with a straight rectilinear motion so that the staple is first properly bent inwardly at the right point and then finally pressed up flat and straight against and into the lower surface of the material 15. The mechanical posi-v tiveness of this sequence of operations absolutely prevents the staple. from jamming or clogging' Also the fact that a consid erable portion of the final clenching operation is a rectilinear movement of the movingparts means that a considerable variation in the thickness of'the material and a considerable error of vertical adjustment between thebonnet 10 and the clencher box 11 is possible without in any way affecting the angular movement of the clencher 22 shaped. clencher lifter 23, whose and hence also the bending operation upon the staple legs. It should particularly be noted also that the clenchers, which are made of flat heat treated stamped sheetmetaldo not require any perforationseither to act as bearings or to act as holes for the reception of the press-fitted pivot studs.

proper shape again after the inevitable warping which occurs upon heat treating the same. The action of the clenchers 22,-

, is absolutely positive both their upward and their downward movement being positively actuated by a corresponding movement of the clencher lifter 23. It will furthermore. be noticed in Fig. 1, that the pivot head 26, v

in this position engages with the horizontal shoulder which bounds the upper limit of the clearance notch 33. prevents either one of the clenchers from falling inwardly from the position of Fig.

1, even though one of the clenchers should;

be, frictionally or otherwise held up somewhat above its companion clencher in such a manner that the clenchers do not touch .each'other at all. It should also ,benoticed that, the width of the lower part of the.

width across the extreme upper part of said clencher lifter, so that the same is absolutely prevented from sliding out of or becoming disengaged from the clencher box in the event that the same should be improperly set up intheclenching machine. In other words, when the clencher parts become worn,

This absolutely:

clencher lifter 23 is much less than the the manufacturer of the stapling machine can send out as a complete unit, a clencher box 11 together with clenchers 22, plates 19.

and clencher lifter 23 disposed therein without any danger of the parts becoming dislocated or fallingout of the clencher box.

I claim as my invention:

1. A stapling machine comprising a clencher box having a pair of symmetrically disposed pivot ledges, a vertically movable disposed imperforate clenchers each of which is provided on its outer edge with a pivot head which is received within and coacts with one of said pivot ledges during the .clencherlifter, and a pair of symmetrically first part only of the upward movement of said clencher lifter.

2. A stapling machine comprising a clencher box having a pair of symmetrically disposed pivot ledges and a pairof clear ance notches located above said pivot ledges, a vertically movable clencher lifter projecting upwardly into said clencher box, and a pair of imperforate clenchers each of which is provided on its outer edge with a pivot head which is received within and coacts with one of said pivot ledges during the first part of the upward movement of said clenoher box and traverses the said clearance notch during the rest of the upward movement of said clencher box.

3. A stapling machine comprising a clencher box having a pair of symmetrically disposed pivot ledges and a pair of clearof hell crank imperforate clenchers each of which is provided with a pivot head which is adapted to engage with one of the said pivot ledges during the first part only of the movement of said clenchers, and each of which has one of its arms adapted to engage directly with said clencher lifter and its other arm adapted to engage with the staple being driven.

HOWARD G. ALLEN.