US1110170A - Pulling-over machine. - Google Patents

Description

H. WALTHER.

PULLING OVER MACHINE.

ArPLIQATIoN FILED APLZO, 1907.

l s l l 0, l '?O Patented Sept. 8, 1914.

3 SHEETS-SHEET 1.

WMA/5MM H. WALTHBR.

PULLNG OVER MACHINE. APPLIGATION FILI'JD Ammo, 1907.

11,1 1G31 70g Patented. Sept. 8, 39ML.

-3 SHEETS-SHEET 2l H. WALTHBR. PULLING OVER MAGHFNE.

APPLICATION AFILED APR.20. 1907. l 19110; 1?@ Patented Sept. 8,1914.y

' a SHEETS-SHEET UNITED sTAIEs Pa c rios.

HEINRICH WALTHER, or WEIssiiNrnLs, GERMANY. assioivoia To THE rima or NoLLEsoHE WERKE ERNST NoLLE. or WErssENrnLs, GERMANY.

To all whomfit may 'concern Be it known that I, HEINRICH VALTHER, a subject of the German Emperor, residing at )Veissenfels a. S., in the Province of ,Saxony and the Kingdom of Prussia, Ger- Aman Empire, have invented certain new and useful Improvements in Pulling-Over Machilies, of which the following is a specification.

. The present invention consists in the combination of a pulling-over machine with an apparatus for binding in of the toe portion of the upper leather as well as in the special arrangement of this apparatus itself. Lasting machines having only one pair of pincers combined with apparatus for binding .and at different times from the several other in of the toe leather part are already known.

Butthis known combination affords no special advantage, as the binding in is there- 1 by performed in independent operations operationsl of the machine, by means of which the upper is fastened to the insole.

In contra-distinction to the combined machines hitherto known in the machine of the present invention the binding in of the toe piece is performed simultaneously with the pulling over operation. Further by the present machine' the repeated wetting' of the toe piece is ohviated, while in the binding in by means of the machines hitherto known the '2 is a. horizontal section on the line ill-Bof Fig. 1, the lower parts of the machine not shown. Fig. 3 shows the hand lever 24 for releasing the toe-pincers. Fig. Li is a vertical section on the line C i) of Fig. 1 and shows thc clutch for operating the machine. Fig. 6 shows a side pincer carrier with the pivot 5 broken away. F ig'. 6 illustrates the. device for stopping the nailingof the machine. Fig. 7 is a side elevation of the topincer carrier. F ig. 8 is a horizontal section on specification @tieners Patent. l Patented Sept, 3, Applicationled April 20,1907. Serial No. 369,326.

binding-in wiper.

als 1914.

A the line E-F of the Fig. 7.l Fig. 9 is a hammer of the toe pincers. Fig. 10 is the Figs. 11, 12 and 13 show the binding in wire in the three working stages of the machine. I

The carrier 1 of the toe pincers is pivotally attached at 2 to the brackets 3 of the machine vframe. T he carriers al of the side pincei's rest upon pivots 5 in sockets 6 of the machine. The carriers 4e may therefore be rocked inward and moved along. The plncers consist of a stationaryT jaw 7 and a movable jaw S (sec Figs. 5 and 7). The stationary jaws are of one piece with the guiding blocks 9 having sleeves 10 containl ing the sliding bars 11. These bars are connected on one side by a rack or an equiva lent means with the movable jaws7 on the other side by links with `the frame 12, whereby springs .1.3 are interposed. The pincers rest by mea s of springs 14. upon the carriers. The frame works with a roller .l5 in a groove 1G of a diskvl? mounted on the driving shaft 18 (see Figs. 1 and). ln moving' down the frame 12 closes at first the pincers normally open and. pulls them thereupon down. The pincer carrier 1 is provided with a guide plate 19 for the binding in wiper 2O (Fig. 7). he spring Q1 pushes the wiper :20 outward against the set screw of the forked lever pivoted at 2 in the brackets 3.

Before the machine is start-ed the toe part of the upper leather is introduced into the open toe-pincers ln swinging aside lever 24 projecting with lingers under the collar Q6 of the link il? the spring 13 comes into action to close the tite pincers and grasp the toe part of the upperl` (Figs. 1 and 7). The shoe is then pressed down by hand on to the last rest 36 and held in position by the halland heel loops QS and 39 respectively.

liv depressing the treadle 30 the Wedge planes 31 on the bar 32 working against wedge planes S3 of a box 34 are actuated and operate to connect the belt pulley Vwith the coupling fastened on the driving shaft lo and siinultaneouslv disengage by .means ofv the rack ill' the roller 3:38 placed ci., lever 3%) from one of the three recesses l() ot a. disk pulley k'l1 (Fig. Ll). lVhen the 'ti-caille il() 'is released the roller S. slides upon the cvlindijical. sin of the disk pulley unt-1l, owing to the action of the spring Ell .arm Gl which presses by 42. it automatically engages with the neato the notches l0 stopping thereby the machine at every third ot tl e revolution.

ln 'the first third of the revolution theA a frame 152y is moved down by the cam-groove pincers having grasped and drawn the leather downward the pincer carriers and the binding in wiper are moved underneath the insole. To do this the pulling over iframe 1B is brought intooperation. This frame is moved by agroove 44C of the disk 17, into which it projects with a roller 15 on its plate sliding in u vertical guide of the machine. The pincer carriers are drawn by springs 4T against the frame 43, so that the side carriers bear with their inclined shoulders 48 against the rollers L19 of the 'lirammllg 2), while the tension olf the front spring l? causes by the medium of the spring 21 theforlred lever 9.3 to bear against the rollers 50. (Figs. 7 and 8). The pulling over' traine in rising presses the side pincer carriers and the binding-in 'wiper 2O underneath the solo, the wiper moving thereby from the position shown in Fig.. 1 into the position shown in Fifi.

rl`he bind-ingin wiper has on either side of its recess suiting the term ot the toe part of the last la groove 51 to receive a wire piece as shown in Fig. 11. During the inward movement oi' 'the wiper the wire piece assumes the form shown in Fig/12. The bent wire part embraces the toepart of the leather, whilethe straight wire parts remain in the grooves 51 which may be dovetailed or otherwise shaped for better guiding oi the wire.

At the end of the second working stage the stretched and pulled over upper is fas tened by tacks on both sides on to the insole while simultaneously therewith two tacks are driven at the toe part into the insole around which the binding in wire is to be wound as hereinafter described.

ln theupper plates of the side pincer carriers l (Fig.i 5) are arranged tack. re-

.ceiving holes 53 into which the tacks are suitably fed and there are fitted in these holes the drivers 5d Vedon the blocks 55. The latter are guided, by rods 56 in the carriers and are connected by' bars -57 with the tack driving trame which slides with the plat of). in guides of the machine iframe d). Beneath the trame 58 springs C0 are arranged to act upon the means oi the link the plate 59 of with its rollers The 132 against the lower part of the trame 5S which bears G23 on the periphery ot the cam 17.

`grooves of the nuts.

erroneo roller (313 entering into the recess 64 of the cam permits the' drivers 5e to move upvardly for effecting the tacking. The tack ing mechanism oi' the front pincers ditl'ers treni thosf of the side pincers in4 that the taclrs are fed into special nozzles G5 of the .viper 2G in which nozzles the drivers 5G are suspended (Fig. "4"). here two arms 67 upon which the drivers 6o slide as the wiper moves in (Fig. 9). The openings of the nozzles and the wire receiving grooves are set to each other in such a manner, that the tacks are driven just oetween the wire part bent to a loop and the straight parts lying in the grooves 51. rlhe tacks being driven the second working stage is `finished.

At the third depression o'l' the tre-.idle the third working stage commences. The stretching frame 12. moves upward and the pulling over 'frame 43 .moves downward, whereby all parts of the machine return to their initial position. The pincers open and move together with the binding-in wiper outward. Owing to the action of the spring G8 the lever Q4: has already returned with its lingers 25 under the collar 26 of the link 27 in the first working stage as the frame 1Q began to compress the spring 13. During the outward movement of the wiper the binding in wire is automatically fastened on the toe tacks not entirely driven in and projecting with their heads from the insole. The edges 69 (Fig. 10) ot the groove 51 force the wire under the and wind it around the same. The edges 70 orP the groove are beveled to allow the wire to be bent only by the opposite edges 69 and to guide the wire ends to lie next to the formed wire loop. (See Figs. 12 and 13, illustrating these steps.)

To adapt the machine `for the manufacture of shoes of di'lerent sizes the side pincer carriers areslidingly journaled at an inclination tothe middle plane of thev muchine (Fig. Q). rEhe pivots 5 or the pincelcarriers l are provided with set nuts 71 held in place by bolts @projecting into By operating the nuts the side plncersmay be longitudinally adjusted with relation to the toe-pincers- The bolts 79 'are preferably fastened to a, lever YB by the operation of which the side pincersmay be temporarily adjusted with relation 'to each other, as a butter Varrangement Tat causes the return of the said pincers into their normal position. 'By this means the toe seam may be righted in case it assumes wrong position on all the` pincers have stretched the leather. ft is easily e y n tual' by the adjustment of the side pim-ets only the toe seam and not the middle linefor the bach ot the upper van be inllueneed as the pull eltected'by this adiustment does not tend to ylraw the The block 55 has heads of the nails the last when lill leather-back held snugly on thel last by the toe pincers. In order to enable the opera tor to place the leather-back right in case -is made separately from the carrier-body and slidingly hung on bolts 76 of the carrier by means of the side plates 77. A forked lever TS pivoted on the carrier bears with its arms 7 9 on the side plates 77 and may be'actuated to move the part 75 with the toe pincers to either side thus displacing at will the upper to the right or to the left. If the lever 7S be actuated before the ma'- chine is started and after the toe pincers only have grasped the leather it will allow for displacing the upper leather as a whole on the last, while when actuated after all the pincers have taken'hold of the upper only the position of the upper may be influenced, as already hereinbefore described. @wing to the action of the spring 13 the toe pincers return to their normal position as soon as they are released in the third working stage.

While the adjustable arrangement of the pincers make it possible to put the upper on the last in the proper position, yet it is sometimes necessary to leave off tacking the leather to the insole and to run the machine to the end of the revolution" and thento begin again the pulling over operation on the same islice. This necessity is experienced for instance, when the margin of the leather slips from one pair of pincers, or when the lining or the counter does not lie smoothly or becomes damaged, which is often noticed in the last moment just before the tacking, when the stretch of the leather is most intense. tacking; could not be avoided, as all parts of the machine are compulsory driven and after the pulling over operation the tacking takes place. The driven tacks had to be pulled out, the shoe parts again assembled and the pulling over operation repeated. Further in the machines hitherto known the tacks were hereby often driven too far from the margin of the upper and damaged it so that it could not be used any more.

To overcome these diiiculties -according to the present invention a device is provided by means of which the tacking may be suppressed even in the last moment before it is ordinarily effected. For thispurpose a wedge 8O (Fig. 6) may be introduced at any time between the lower part of the plate 5-9`of the frame 58 and the opposite wall part of the machine frame, againstv which that plate-part comes to lie when the frame 5S owing to the. action of the springs 60 enters with its roller 63 the recess 64 on In such or like cases hitherto thel the periphery of the cam 17. The wedge SO slides with a guiding bolt S1 in a hole of the machine frame and is held in position on one side by the spring 82 and on the other side by the bent arm 84 of theshand lever 83.f-"-By depressing this .lever the wedge 8O is forced inward and prevents the tacking frame 58 from going upward and pushing up the drivers When released thelever` 88 bears with a stop iagainst the machine wall.

The present invention discloses several important features. Hitherto no apparatus has been known for binding'in of the toe p art ofthe upper without help of the attendant and the principal difliculty which was to be overcome was the automatic fastening of the wire around the tacks. It is apparent that this diiliculty is nowl easily overcome. Also the circumstance that the wiper forces the leather inward While it is being -'stretched by the toe pincers means an ladvantage, as theupper is thereby easily pressed under the channel-hap of the insole. The binding in apparatus according to the present invention may as well be built as an independentbinding in machine, but it is preferably as shown combined with a pulling over machine of the ldescribed or any other type. i j

It willl of course be understood that this invention is not limited to the specific embodiments thereof described and shown in this specification,` but that the invention may-be embodied in many different mechanical forms and that the several of its features are capable of advantageous use independently of other features.

`What I claim is l. In a pulling over machine, a wiperv provided with tack receiving holes, pincers journaled beneath the wiper, and means for moving the pincers obliquely with respect to the wiper. i

2. In a machine of the class described, tacking mechanism including tack drivers, a wedge movable into position to prevent actuation of the drivers, and a spring acting to normally hold the wedge out of such position.

3. In a machine of the class.- described,

tacking mechanism includingtack drivers,

means for suppressing the operation of the tack drivers.

5. In a device of the class described, the combination With side pincers, of means for forcibly adjusting the side pincers longi tudinally o the last, toe pincers, a toe Wiper extending tacking means associated with the side pincers, and a plurality of tacking drivers associated with the toe Wiper and toe pincers.

6. lua device of the class described, the combination with side pinceis, of toe pincers,

on eithei1 side of the toe pincexs' `a handle for forcibly adjusting tbe-toc 19incei's along the toe of thelast, and means foi;

aiiiomaticallv returning the ioe pincers to 15 lieii original position.

lo testimony whereof l have signed my name to this specification in presence o "awo subscribing Witnesses.

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