US1712843A - Stitching machine - Google Patents

Description

l 421 h li 51:"

2 Shea* Q-Sheet I @l i I: I HH l l I sTI'icHING MACHINE- Filed Jan. '7, 19.27

G. L RICHARDSON ET AL May 14, 1929.

" May 14, 1929.

G. L. RICHARDSON ET AL STITCHING MACHINE Filed Jan, 7, 1927 2 Sheets-Shen #ffy l Patented May 14, 1929.

UNITED STATES PATENT OFFICE.

1311101316313 L. RICHARDSON AND WALTER PABICH, OF CHICAGO, ILLINOIS; ASSIGNORS TO LA'IHA'M MACHINERY COMPANY, A CORPORATION 0F ILLINOIS.

STITCHING MACHINE.

Application filed January 7, 1927. Serial No. 159,615.

rllhis invention relates to a wire stitching machine.

Une of the objects oi the present invention is to provide a simplilied and improved mae chine which is adapted to stitch a plurality eff oit staples in relatively close proximity in respect to each other.

A further object olx the invention is to provide a novel construction ot a staple :former and driving mechanism in which the plurality of formcrs is made up of a single integral part and the plurality o'l staple drivers is made up of a single integral part.

A. still further object ot the invention is to provide a novel form of staple Yformer in which the plurality et staple tormers is made oi a single integral part and is constructed in such a manner that the i'ace plate or joining part enten ds int-o the 'former for properly guiding the wire in its proper course.

rllhese and other objects are accomplished by providing construction and an arrangement oit the various parts in the manner hereinafter described and particularly pointed out inthe appended claims. i

"lhe invention in the present instance is an improvement over the patent issued in the name of Ernest Leschhorn, No. 1,583,935 granted May 11th 1926.

Reterring to the drawings:

Figure 1 is a iront elevational view of a wire stitching machine showing ournovel iorm ot staple forming and drivingr mechanisin mounted therein;

Figure 2 is a vertical cross-sectional view oi the same;

Figure 8 is a cross-sectional view taken on the line in Figure 1;

Figure lis a front elevational view of our improved. staple former; and

ligure is a front elevational view oit' our improved i'orm ot staple driver'.

Vlhc present invention is applied to wire stitching machines of a character well known in the art and only that portion of the machine is shown in the drawings to sui'liciently illustrate the present invention and its relative parts.

lhe whole stitching mechanism which constitutes the head is supported on a horizontally disposed arm which rotatably supports a shaft 16 in a horizontal bore 17 ot the arm. Secured to the forward end of the arm 15 and forming a portion of the head is a vertically disposed plate 18 upon which the operative parts ot the stitcher are mounted. A. reduced portion oi the shaft 16 indicated at 19 extends past the plate 18 and has secured thereto by means of a hey (not shown) and cam 20. Securely mounted in any well known manner on the reduced portion 19 ot the shaft 16 is a gear 21 which in turn is operatively connected or geared to a pair of wire feeding rollers gears 22 by means ot an inter'- mediate gear 23 on one side of the shaft. Gearcd to a second train of gears, as indicated at 24, is another pair ot wire feeding gears 25 located on the other side ot the shaft. Each ot these pairs ot feeding gears is provided with the conventional 'tor-m ot wire feeding cams 26 and 27 respectively. The movable wire feeding cams are journalled in the pivoted brackets 28 and 29 which in turn are pivoted as shown at 3() and 31 respectively to the frame or plate 18 of the head. Each of these brackets is provided with the usual spring tension nut 32 and spring 33 for varying the spring pressure between the feeding cams. Each of the wire feeding mechanisms is also provided with the usual conventional form of wire check 34C and wire guide tubes 35, which in turn curve inwardly toward the staple forming and driving mechanism. Formed integrally with the plate 18 is an upwardly extending arm 36 which forms a support 'for wire reels 37 and 38. Each et these reels is provided with the usual form of spring tension 39 and 40, which also lfor-1n the guides for conveying the wire into the wire :feeding mechanism. The mechanism above described is essentially similar to the construction described and claimed in the U. S. Patent No. 1,583,935 granted May 11, 1926, above referred to.

The essential feature ot the present invention is the provision of a novel iorm oi' staple driving and forming mechanism in which a plurality of sta-ple :tormers is constructed of an integral piece of material whereby the staples formed by the staple former are driven into the material in close proximity to each other. By thus having the two staple formers formed of an integral piece, the possibility of having one iormer advance previous to the other is. eliminated yand the possibility of cramping is prevented.

These same advantages, it will readily be seen, are true-of the staple driver.

Our improvedform of staple former 41 consists essentially of a transverse web portion 41 which is provided on its rearward side with'a roller 42 journalled on a pin 43. The former is reciprocally mounted between two guiding plates 44 which in turn are secured to the frame or plate 18 in any well known m'an'n'er.` The former is operatively driven by the cam `20 which in turn is provided with an eccentric groove 45`in which the roller 42 travels. The former41 isprovided with two outside ange portions 46 and 47 which are formed integrally with the web portion of the former and have supported on their opposite faces the usual wire cutting knives 48 whichin turn are secured thereto machine'screws 49; Mounted in the lonvV-shaped groove 53 hasits bottom side thereof, as shown at 55, in line with one side of the transverse groove 56t`ormed in the bottom of the vertically extending portion 50. This groove 56 forms the paththrough which the wire is fed just previous to being formed into the staple. The transverse groove 56 is in alignment with' Vthe transverse grooves 57 formeel in the lower ends or' the tlange portions 46 and 47 of' the staple former 41. Mounted in the V-shaped groove 53 of the i vertically extending port-ion 5t) of the staple former 41 is a V-shaped projection 56 which lis formeel integrally with the face plate 57 which in'turn is secured to guide members 44 by means of screws 58; This V-shaped projection is also provided with bevclled surfaces 58 which extend parallel with corresponding'surfaces 54 of the V-shaped recess 53'so ,that when each of the wires is fed in through the transverse groove 56 they will be guided into proper position inv the groove 56 by theV bevelled surfaces of the V-shaped projection 56.

Another essential feature of the present invention is the provision of a novel form of staple driver in which two drivers are formed in one integral piece ot' material adapted to be reciprocally mounted in the former. This novel iorm of driver is generally indicated by the reference character 59 and consists of a transverse upper web portion 6() and two vertically extending-leg portions 6l. The leg portions of the former 59 are provided with laterally extending guidingr ribs 62 which are adapted to be mounted in the grooves 51 and 52 4of the vertically extending `portions 50 and Iianges 46 and 47 respectively of the former. The lower ends ot the legs 61 of the driver 59 are 4provided with transverse wire grooves 63 which are in transverse alignment with the grooves 56 and 57 of the vertically extending portion 5() and flanges -tti and 47 respectively. These grooves 63 normally engage the upper portion ofthe loops of the staples when the staples are beingr driven into the material in a manner well understood in the art. rThe driver 5t) operatively driven by a crank pin 64 mounted eccentrically on the cam 20 and operatively connected by means of a pitman connection 65 to a pin or stud 66 secured to the upper end of the driver. Co-operating with each of the staple former and driver mechanisms are the usual anvils 67 mounted in the bores 68 formed in the frame or plate 18. The anvils 67 are normally pressed forwardly by coinpression springs 69 which have one of their ends engaging sockets 70 formed in the rear sides ot the anvils and the other ends thereof engaging plates 71 secured to the rear side ot the frame 18. Each anvil is provided with theusual transverse slot 72 through which the wire is fed and formed into a staple previous to being driven into the material. (fooperating with the anvil and staple driver is the usual staple supporter 73 pivot ed to the face plate 57 as shown at 74. ',lhe staple supporter 73 is actuated by the usual `torni of spring plunger 75 and spring 76, both ot which are mounted in the vtace plate 57 and operated in a manner well understood in the art.

In the operation of our improved forni of stapling machine it will of course be understood that the wires are Vfed 'trom both wire reels 36 and 37 through the feeding rolls 26 and 27 respectively, through the guide tubes 35, from which they are fed into the grooves 72 of the anvils 67.

It will be noted that by reason ot the V- shaped portion 56 extending into the V- shaped recess 53 of the vertically extending portion, should the wire be misguided from the grooves 56 in the lower end of the vertically extending portion 50, the bevel edges ot this V-shaped projection 56 will properly guide the wire in the groove 56 and thereby prevent the wire from becoming distorted and improperly driven into the material. After lSl) Lil)

li l) the wire has thus been fed the staple foriner then moved downwardly by the-action et the cani through the roller 4t2 and the wire severi-id by the entt-in lniives 4:8. Followinp)I the cutting' operation the lower end el the tieners lo and l? andthe vertically extending portion 5l) oit the toriner forni the wire into staples, ott-er which the staple doriversl are then actuated by the pitman Go downwardly to drive the staples thus i'orined into the inaterial.

ltlroni the above description it will be seen th at in addition to providingl a stitching` inachiue in which two stople :toriners are inode oit one iijltegg'rnl piece oit material, es well as two staple drivers, we have also provided an arrangement whereby the 'wire is positively' `fielded into its proper grooves in the staple ilorzners-i to positively insure the correct torinin@l ot the staple and thereby jproventinp,r the sta ples troni being` innjiroperly driven. into tho materie ,g at the saine time providing` a eonstruction in which the staples are driven in Vparallel alignment in relatively close proximity.

ldlhile in the above specication we have described one embodiment which our invention may assume in practice, it will olf course be understood that the same is capable ot inmliiication and that niodilication inay be employed without departingr -troni the spirit and scope of the invention. as expressed in the lfollo'wing clai ins.

lill h at we claiin as onr invention and desire s icnre by Letters Patent is:

1l. il wire stitching;l machine eoinprisii'ie,` a traine, a .plurality of wire feeding 'inechze nsnis mounted on said traine, a plurality of staple it'ornierzf: iorn'led integrally with etch other, a plurality oit staple drivers iorined inteirrally `with each other and operatively driv en by said shaft, said staple 'lornlcrs ha vinoF a recess therebetween, and a 'tace plate having` a bevelled projection extending into the recess between said toriners for properly guiding the wires as they are being` :ted by said feedingI in eeh anisins.

La. il wire stitching1 niaehine comprising a traine, a drive shaft inonnted thereon, a plurality ol2 feeding mechanisms mounted on said ironie and operatively driven by said shaitt, a pliufality oit staple ioriners orn'ied intr rally with cach other and operatively driven by said shailt, a plurality et drivers lfornielil integrally with each other and opera tiwly driven by said shelt, and a iaee plate secured to said traine and having;` a projection extending; into the path ol the wires ted to each. ot' said staple toriners :tor properly guidin the 'wires in position t'or said toriners.

t wire 'ching machine eon'iprising;- a ilranneT a drive shalt mounted thereon, a pinrality ot feeding; mechanisms mounted on said traine and operatively driven by said shalt, a plurality et staple forming inechanisilns iiornied integrali y with each other and having a recess tllerebelnveeln a plurality oli' lrivinn niechanisiuf-s ilorined integrally with each other and reciprocally mounted in said staple termen-t and ineans secured to said trarne and ertendin into the recess between said staple ioriners ttor properly guiding the wires to said .staple 'toriners t. il. wire stitehiiiip; machine comprising;1 trainerJ a drive shait nionnted thereon, a plurality oi' oppositely positioned feeding; inech- :inisins mounted on sai d traine and operative ly driven by said shaft7 a plurality oi staple :terminoI mechanisms i'ornied int orally with each other and located in relatively close position with respect to t` il other, there being` a tshaiied recess lornied between the adjacent staple torntersy a 'jgilurzzlity oil staple driversreciprocally mounted in said staple torniers and liornied internal] y with each other and opera-tively driven by said shaft, and a tace plate :if-ieee red to said tronic end having; a ll'- shaiied projmftiiiin. entriulinn` into the recess ple `liornlers tor properly guido j the wires :in position for said staple P lil'llllllll 5. il wire i-ltitchinig machine con'ujirisingg; a

traine, a drive shaft located centrally in said traine, wire :leedinpj mechanisms located on `the opposite sides et said shalt a nd operativeF ly eoniiected tllerewith9 a pair et steple torin- V2ged in lineal. aliegini'ient and torined j y with each other and oilieratively n by said shaitq a pair el staple drivers arranged in lineal alignment and ifornied inf t j 7ith eachother and operatively driven by shatt, and ineens secured to said :traine ai extending; adj acent the path ot the wires tor engagement with said wires :tor properly guidi M said wires in position tor said. is

li. i

phi 'it nia chine cmnprisinn; a

ienne, a d tt inonntcd thereon, a plurality oit wore 'leerling nieehanisnis operativo ly driven by said drive shalt a cani lined to said shaft7 a Jair oi? staple ioriners iornied inteerally with each other and o]j)eratively connected to said earn9 a pair ont staple drivers ttor-ined integrally with noch other and operatively connecteffl to said cani, and an iininow oble ,f g'nidingg ineans extending into the recess 'torined in seid staple torn'iers :tor properly kneidi u e; the inner ends et said wires in proper position :tor said i'erniers.

7. it, wire stitchii i; machine coniprisingl e. traine, e drive shalt inonnted thereon, a pair oi" wire teedin mechanisms operatively driv en by said shalt, a earn lined to seid shaity a pair ot staple :lforiners eon'iprisinp; a transverse web porti and two vertically entendine; tienne ineinbers, a vertically extending); portion termed integrally with said. web por 'ti n and positioned between said flange portions? a lil-shepcd recess torined. in said vertically entending portieri, a pair ot staple driv@ ers comprising a transverse web portion and two vertically extending legs reciprocally mounted in said formers and operatively connected to said shaft, and a, face plate secured v5 to said frame and having a V-shapedprojection extending into the recess formed in the v vertically extending portion of said formers for properly guiding the wires in position for said foi-mers.

In testimony wlierof we have signed our 10 names to this specification, on this 28th day of December A. D. 1926.

GEORGE L. RICHARDSON. VALTER PABICH.

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