US2395874A - Lasting machine - Google Patents

Lasting machine Download PDF

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US2395874A
US2395874A US540174A US54017444A US2395874A US 2395874 A US2395874 A US 2395874A US 540174 A US540174 A US 540174A US 54017444 A US54017444 A US 54017444A US 2395874 A US2395874 A US 2395874A
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wipers
margin
movable
trimming
knives
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US540174A
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Jorgensen Bernhardt
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D23/00Single parts for pulling-over or lasting machines
    • A43D23/06Devices for cutting-off superfluous material on the uppers or linings

Description

B. LIORGENSEN March 5, 1946.
LASTING MACHINE s Shee ts-Sheet 1 Filed June 14, 1944 Ewen-tor Bern ha rdi Jorgense n March 5, 1946. B. JORGENSEN ILASTING MACHINE Filed June 14, 1944 5 Sheets-Sheet 2 Inven for Berhhar'a't Ja me):
March 5, 1946.
B. JORGENSEN LASTING MACHINE Filed June 14, 1944 5 Sheets-Sheet 3 In ven tor Bernhard z Jorgensen March 5,1946, oR g 2,395,874.
LASTING MACHINE Filed June 14; 1944 5 Sheets-Sheet 5 Patented Mar. 5, 1946 LASTING MACHINE Bernhardt J orgensen, Marblehead, Mass, as-
signor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application J une. 14, 1944, Serial No. 540,174
20 Claims.
This invention relates to lasting machines, and more particularly to toe-lasting machines having means for trimming the margin of the toe end of the upper materials. The invention is herein illustrated as applied to a machine constructed generally as disclosed in United States Letters Patent No. 2,324,509, granted on July 20, 1943, on an application of mine, but modified in certain respects in accordance with the further disclosures of Letters Patent No. 2,337,558, granted on December 28, 1943, and Letters Patent No. 2,377,887, granted on June 12, 1945, on other applications of mine. It is to be understood, however, that the invention is not limited to machine organizations of that particular character.
The above-mentioned machine is a fluid-operated machine provided with toe-embracing wipers which at a certain stage in the cycle of operations of the machine support the margin of the toe-end portion of the multi-ply upper in outspread position, with grippers which grip the margin of the upper and pull it outwardly over the wipers, and with upper-trimming means movable outwardly over the wipers to trim from the margin of the upper all but the outer layer of the upper materials, leaving the margin of the outer layer to be wiped inwardly over an insole on the last by the wipers. The upper-trimming means comprises a middle trimmer movable lengthwise of the last and a pair of side trimmers movable widthwise of the last to act on the upper prior to the action of the middle trimmer thereon. The grippers are so controlled as to release the upper substantially at the time when the side trimmers begin their trimming action thereon, whereupon all the grippers are moved farther outwardly to avoid interference with the trimmers.
An object or this invention is to afford better insurance that the margin of the outer layer of the upper will not be objectionably cut by any of the trimming knives. For this purpose, in the construction herein shown, the several trimmers carry with them members for positioning the margin of the upper flat on the wipers in advance of the edges of the trimming knives. These members are controlled by springs and are so posi tioned as to be moved yieldingly heightwise of the shoe relatively to the knives in response to pressure of the margin of the upper thereon, thus insuring their effectiveness to hold the upper pressed flat on the wipers as the knives are moved outwardly over it.
In order properly to control the waste material removed from the upper in the upper-trimming operation, and thus to prevent it from falling into the machine and interfering with the working parts, the above-mentioned members for pressing the margin of the upper on the wipers are so arranged relatively to the trimming knives that the waste material is retained between them and the knives. After the upper-trimming operation the upper-trimming means is moved .to carry the waste material to a discharge position, and the invention further provides means for gripping it in that position to effect its removal from the trimming means.
In the use of the machine to which the invention is herein shown as applied'it may occasionally be desired, as more particularly .hereinafter explained, to operate on a shoe a second time from the beginning of the cycle of operations of the machine after the upper-trimmin operation, at least, has been-performed in a preceding cycle, or partial cycle, of operations. In order to insure that in. that-event the uppertrimming means will, not damage the margin of the outer layer of the already trimmed upper, the invention still further provides means for preventing the upper-trimming means from moving into its normal relation to the shoe if the machine is thus used to operate on the shoe a second time. i
The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims,
In the drawings, 7
Fig. 1 is a view partly in left-hand side elevation and partly in section of the upper portion of the machine to whichthe invention is shown as applied;
Fig.2 is a plan view of a portion of the machine;
Fig. 3 is a section on the line IIIIII of Fig. 2;
Fig. 4 is a view in elevation from the front of the machine of the right-hand side trimmer and the parts associated therewith;
Fig. 5 is a section on the line V--V of Fig. 4, showing parts in elevation;
Fig. 6 is a view partly in elevation and partly in section, illustrating the relation of the side trimmer shown in Fig. 4 to the upper in the upper-trimming operation;
- Fig. 7 is a vertical sectional view illustrating the action of the middle trimmer on the margin of the upper;
Fig. '8 is a section on the line VIIIVIII of Fig. 1
Fig. 9 shows a portion of the structure in elevation, as viewed in the direction of the arrow A in Fig. 7;
Fig. 10 is mainly a plan view, but with parts in section, illustrating the relation of the trimmers to the shoe at the end of the upper-trimming operation;
Fig. 11 is a view partl in plan and partly'in section, illustrating the relation of the uppertrimming means to means shown at the left-hand,
ing of this invention. For positioning the shoe bottom upward in the machine there is herein shown a member 2 arranged to engage the bottom oi the'forepart of the insole and having thereon a downwardly extending spur 4 (Fig. 10) arranged to enter a hole previously formed in the 'for-epart of the insole, in accordance with the disclosure of Letters Patent :No. 2,391,461, granted on December '25, 4945, 1011-311 application of mine, 7 Side gages shown in said Letters Patent {or further determining the position of the shoe with respect to lateral swinging movement about the axis of the :spur 4 are, however, omitted, the side grippers (hereinafter referred to) being depended upon in their initial positions to determine with-sufi-"icient accnracy the position of the's'hoe in this respect. Early in the power opera-tion of the machine the shoe is clamped against the member 2 by an upwardly movable toe rest 6. Iihe shoe .is presented with the outtnrned margin of the toe end of the multi-ply upper between the open jaws of a pluralit of grippers, comprising an end gripper -8 which .grips the upper at the end of the toe and side grippers l vvhiol-i g-rip it at the sides of the toe, those grippers being mounted on-a grippersu-Dport 12 (Fig. -l)-. Ea'rly the cycle of operations of the machine the end gripper and the side grippers are mo'ved respectively lengthwise and 'widthwise of the shoe to pull "the upper, and while they are thus pulling the upper outwardly its toe-end portion is wiped heightwise of thell'ast and is conformed to the contour of the'last 'by upward movement of a substantially "U-s'hape'd flexible toe former "I carried 'by a support is. Also carried by the support iii are toe-embracing wipers l8 located in a plane immediately above the the former and arranged to support the margin of the up er 'oh theirtopffaces in outspread osition. While the margin of 'th'e upper is thus supported a middle "trimmer 210 and side trimmers "22 are moved respectively {lengthwise and wic'itlniv-ise of the shoe in outward "directions fever the wipers to trim from the margino'f the upper all but the outer layer :of the u per materials, :leaving the margin of the outer :layer to be thereafter'wiped inwardly over the "insole by the wipers :into ".position to be secured to the insole by cement applied to the shoe by imeans "not herein shown in detail. In time relation to the GiltWdId-THOVE; ments of the trimmers, as the side trimmers -begin to act on the upper, the grippers are caused to release the upper and are moved farther outwardly to avoid interference with the trimmers, the grippers being shown in Fig. 10 in the positions which they occupy after such retractive movements. After the upper-trimming operation the upper is released by the toe former l4 and the operations of pulling it and of wipin it heightwise of the last are repeated, the grippers at'this time acting only on the outer layer of the upper materials, as disclosed particularly in the previously mentioned Letters Patent No. 2,337,558. Cement is then applied to the shoe and the wipers l8 are operated to wipe the margin :of the outer layer of the upper inwardly over the insole into position to be secured to the insole by the cement.
The trimmers 2.0 and 22 are supported on a carrier 24 by downward movement of which they are carried into positions to operate on the upper and by upward movement of which they are thereafter carried away from the shoe. The down-ward movement of the carrier is effected by fluid admit-ted at the proper time to a cylinder 2-5 (Fig. 3) and acting on a hollow post :28 to which the carrier is secured, the upper end of the post serving as a piston within the cylinder. The limit oi-the downward movement of the ,post and the carrier adjust-ably determined by means :fnlly disclosed in the previously mentioned Letters Patent No. 2,324,599. The upward movement of the post and the carrier is effected, in response to release of fluid from the cylinder 26,, by a spring 30 in the .post. As further fully disclosed .in the ,lastementioned Letters Patent, the post 213 :is also mounted'for turning movement to permit the carrier 24 to be swung flaterally, and such swinging movement of the carrier toward the left is effected at the proper time after the upper-trimming operation to carry the upper-trimming means away from over the shoe and to bring into position over the shoe means above referred to for applying "cement to the shoe, this cement applying means being mounted on a support which .is part or the carrier 24 and a portion ofFwhich is :shown at 32 in Fig. 2. After such swinging movement of the carrier 24., it is again moved downwardly by fluid admitted to the cylinder 26 to carry the -'cementapplying means into position'to apply cement to the-shoe.
.The middle trimmer 2015 provided with-a knits 34 having a "cutting edge curved widthwise of i-the sh'oaand the side -trimmers 22 areprcvided with knives 36 having cutting edges which in the construction herein shown are somewhat curved l'eng thwise or the shoe. The rseveral :knives, :in operating on the upper, m'ove in a plane parallel to the top faces of the wipers l8 with their cutting edges spaced from these faces a distance substantiall equal to the thickness of the outer layer of the upper materials, "so that theycut through the inner layer or layers of the upper materials on a line gen rally parallel to the edge oi the insole while leaving the'marg'in of the outer layer to 'be lasted'inwardly over'ithe insole. For convenience the drawings show only .nne layer of upper materials :in addition to the :outer layer, but :it will be understood that ordinarily the toe end of the upper will includeatdeast three layers. At the time (ifthe upper-trimming operation the top races of the wipers are :positioned somewhat ,higher than the bottom face of the -t0B'BHd0f the ihsole,::as shown in Fig. -'7., so thatasmall margin cf :the trimmed laye'r or layers -'of the upper :ma-
terials isleft to be lasted inwardly over the extreme edge portion of the insole.
As further fully disclosed in Letters Patent No. 2,324,509, each side-trimming knife 36 is secured to a knife holder or carrier 38, and to impart trimming movements to these knives the two carriers 38 are moved along guideways 40 (Fig. 2) on the carrier 24, these guideways being curved about a vertical axis located opposite the end of the toe of the shoe in the upper-trimming operation. Such movements are imparted to the carriers 38 by a slide 42 (Fig. 3) movable lengthwise of the shoe along guideways on the carrier 24. The slide is moved in a rearward direction, i. e., toward the left in Fig. 3, thus to operate the side knives by a fluid-operated piston 44 movable upwardly in a cylinder 48 on the carrier 24 and connected by a link 48 to one arm of a threearmed lever 50 mounted on a rod 52 onthe carrier 24, another arm of thislever being connected by a link 54 to a pin 58 on the slide 42. On the opposite sides of the slide 42 are cam faces 58 (Fig. 2) which serve in the movement of the slide to operate levers (it connected by links 82 to the knife carriers 38. Also mounted on the carriers 38 are knives 84 arranged to sever from the rest of the upper materials the opposite ends of the strip of waste material produced by the action of the side knives 36 and the middle knife 34 in cutting the inner layer or layers of the upper materials on a line parallel to the edge of the shoe bottom. Pivotally mounted on the abovementioned pin 58 to swing in directions heightwise of the shoe is an arm 60 which serves as a carrier for the middle knife 34. The arm is held initially upraised by a spring 38 connected to it and to the slide 42, the limit of its upward movement being determined by engagement of a lug 18 on its rear end with the top of the slide. It will thus be seen that the arm 66 is carried rearwardly by the slide 42, but it remains upraised until the side knives 30 have been swung substantial distances away from each other in their operative trimming movements. The arm is then swung downwardly to carry the cutting edge of the knife 34 to the same plane as the cutting edges of the side knives 38, and by further movement of the slide 42 thereafter the knife 34 is moved rectilinearly to complete the upper-trimming operation begun by the side knives in their earlier action on the upper at the sides of the toe. The downward swinging movement is imparted to the arm 06 through a.lever I2 pivotally mounted on a pin I4 on the carrier 24 and provided with a roll I8 arranged to engage an inclined face I8 formed on a plate 80 on the arm 60. Operative movement is imparted to the lever I2 by a roll 82 carried by one arm of the threearmed lever 50 and arranged to engage a cam face 84 on the lever I2. In the construction here-- in shown the plate 80 is adjustable lengthwiseoof the arm 80 and is held in adjusted position by screws 86 extending through slots in the plate.
For purposes of this invention the machine is provided with means affording better insurance that the margin of the upper, especially after its release by the grippers, will be positioned fiat on the wipers in advance of the edges of the trimming knives to guard against any danger that the outer layer of the upper will be objectionably cut by the-knives. arm 38 of the middle trimmer 28 is a bar 88 (Figs. 3 .and 7) on the lowerend of which is secured a curved upper-engaging presser foot 98 arranged to extend widthwise of the shoe substantially as far as the knife 34. At its upper end the bar88 is pivotally mounted at 920m one arm of a bella socket in the arm 66 is a spring-pressed plunger on the wipers.
Supported on the a I82 in engagement with a finger I04 extending rearwardly from the upper end of the bar 88. It will thusbe seen that the plunger I02 tends both to swing the bar 88 in a forward direction toward the arm 63 and alsoto move the bar bodily downward by swinging the bell-crank lever 94 about the pin 96, and that the screw 98 determines adjustably the limit of downward movement of the bar. Its forward swinging movement is limited :by its engagement with a rear face I06 (Fig. .8)
of a nut I08 which is threaded on a bolt IIO by means of which the knife 34 is secured to the arm 68, the nut and the bolt extending through a slot I I2 in the bar 88. To assist in holding the bar 88 against lateral movement there is provided a stud II4 which is fast in the arm 66 and extends through a slot I I6 in the bar. Preferably the bar is so adjusted that the lower face of the presser foot is positioned initially in substantially the same plane as the cutting edge of the knife 34, and when the knife is moved rearwardly to perform the upper-trimming operation about the end of the toe the presser foot engages the upper materials just in advance of the edge of the knife and is forced slightly upward against the resistance of the spring plunger I02 by the pressure of the upper thereon. Throughout the rearward movement of the knife over the margin of the upper, therefore, the presser foot 90 continues to press yieldingly downward on the margin of the upper in advance of the .edge of the knife to insure that the portion of the margin over which the knife travels will be held flat As the knife begins to cut-the inner layer or layers of the upper materials the waste material severed by the knife is forced upwardly between the beveled edge portion of the knife and the presser "foot 90, as illustrated in Fig. 7. In this operation the bar 88 may yield slightly in a rearward direction against the resistance of the spring plunger I02 in response to pressure of the waste material on the presser foot, and at the end of the upper-trimming operation the middle portion of the strip 10 of waste material removed from the upper remains glarfnped between the knife 34 and the presser Similarly, each of the side knife carriers 38 has supported thereon a bar I I8 (Figs. 4, 5 and 6) the lower end of which is extended lengthwise of the edge of the shoe bottom for engagement with the margin of the upper in advance of the edge of the trimming knife 33 associated therewith. The bar H8 is secured by means of a rivet I20,
a screw I22 and a dowel pin I24 to a holder I26 pivotally, supported by a pin I 28 on one end of a link I30 the other end of which is pivotally mounted on a pin I32 supported b a bracket I34 fast on the knife carrier 38. Mounted in a socket in the holder I23 is a spring I30 the upper end of which bears upwardly against the carrier 38 and the lower end of which is seated on a screw I38 threaded in the holder. The spring, therefore, tends to move the holder and the bar H8 in a downward direction and also to swing them about the pin I28 in a direction toward the trimcement to the shoe.
ming knife 36. Downward movement of the holder and the bar is adjustably limited by engagement of a screw I40 in the bracket 134 with a shoulder I42 on the link I30. Swinging movementof the bar '8 toward the knife 36 is limited by its engagement with a flange I44 formed on a crew I46 by which the knife 361s secured to the carrier 38. A socketed portion of the screw extending outwardly from the :flange I44 lies in a slot I48 in the bar H8 to assist in preventing lateral movements :of the bar. Similarly to the bar 86 associated with :the middle knife, the bar .8 associated with each side :knife is preferably so positioned .by-adjustment of thescrew 140 that its upper-engaging face is positioned initiall in substantially the same :plane :as the cutting edge of .thecknife 36, and the bar is forced slightly upward by pressure of the upper thereon just before the knife begins to cut the upper. Thereafter, during the outward movement of the knife over thewmargin of the upper the bar -'I I8 serves to press the upper flat down on the wipers in advance of the edge of the knife, and at the .same time the corresponding :end portion of the strip of waste material is forced upwardly. between the beveled edge portion :of the knife and the bar II 8, as illustrated in Fig.6. In response to pressure of the waste material thereon the bar may yield slightly in an outward direction against the resistance of thespring I36 by swinging about the pin I 28. At the end of the upper-trimming operation the opposite end portions of the strip of waste material are held clamped between the knives 36 and the bars I I-B in the same manner as its intermediate portion is clamped between the knife 34 and the presser foot 90 on the bar 88.
As hereinbeiore explained. after the uppertrimming operation the carrier 24 is moved upwardly to carry the trimming means away from the shoe, is swung toward the left to carry cement-applying means thereon to a position over the shoe, and is then moved downwardly to carry the cement-applying means into position to apply By the last-mentioned downward movement of the carrier the uppertrimming means :is carried to a position the upper portion of a waste receptacle I50 (Fig. 2) which corresponds to the waste receptacle' 874 shown in Letters Patent No. 2,324,509. Mounted in this waste receptacle is mechanism difterent from that .shown in the above-mentioned Letters Patent for removing the waste material from the trimming means. For purposes of this invention also a change has been made in the timing of the operation of the valve means whereby fluid is released from the cylinder 46 (Fig. 3), so that the trimmers 20 and .22 are maintained in the relation to one another which theyoccupy rat the end of the upper-trimming operation (Fig. 10) until after they have been moved as above described to positions within the Waste receptacle I59, From .the disclosure of the last-mentioned Letters Patent it will be understood that this change in the timing is readily effected merely by adjustment of the valve-controlling means. Accordingly, the strip of waste material, clamped between the middle knife 34 and the presser foot 90 and between the side knives 36 and the memhers I It as above described, arrives in the waste receptacle with substantial "portions thereof exposed between the middle trimmer and the side trimmers. The above-mentioned mechanism in the waste receptacle for removing the waste material from 'theitrimmers comprises means for asoa evr gripping it in these exposed locations and-for holding it to eifeot its removal from the trimmers when the carrier 24 is moved upwardly away from the receptacle in its return to starting position. Secured within the upper portion of the receptacle is a casting I62 (Figs. 2 and 11) having oppositely extending wing portions I54, and mounted for adjustment along guideways on these'wing portions are brackets I56 each having formed thereon an arm I58 which terminates in a jaw I160 arranged to engage one side of the strip to, of waste material. Positioned above and beloweach bracket I56, respectively, are two arms 1 62 which are mounted to swing about a stud :I64 extending througha bushing I66 (Fig. 14) in the bracket and are secured in fixed relation to each other toserve as a single arm. Secured to these two arms at corresponding ends of the latter is a jaw I68 arranged to clamp the strip of waste material against the jaw I60 in'response to swinging :movement of the pair of arms I62 about the stud I64. For thus swinging the jaws I68 from their initial positions (Fig. 2) to their wasteclamping positions (Fig. 11) there is provided a fluid-operated piston I10 movable in a cylinder H2 which is part of the casting I52. The piston is connected to the two pairs of arms I62 by a crossbar I14 and two links I76, the crossbar being pivotally mounted midway between its opposite ends on a pin I78 carried by the piston. It will be understood that when the carrier 24 is moved downwardly to carry the upper-trimming means into the receptacle I50, the strip of waste material is carried to a position between the jaws I60 and the jaws I68 associated therewith, the jaws I60 being properly positioned relatively to the waste material by adjustments of the brackets I56 relatively to the casting .152. The brackets are held in such adjusted positions by clamping screws I60 extending through slots I82 in the brackets into the wing portions I54 of the casting. After the waste material has thus been positioned between the jaws I60 and the jaws 568, the piston Hi! is operated against the resistance of a pair of return springs I84, which are connected to the pin I18, by fluid admitted to the cylinder I12. Conveniently the admission of fluid to this cylinder may be con-trolled by the same valve whereby fluid is admitted to a cylinder (not herein shown) for imparting operative movements to the wipers I8, the construction being similar in this respect to that disclosed in Letters Patent No. 2,324,509.
It will be understood that thejaws I60 and I68, by their hold on the strip of waste material, cause the strip to be withdrawn from between the trimming knives 34 and 36 and the strip-clamping members .90 and H8 associated therewith in response to the return upward movement of the carrier 24, Thereafter, upon release of the fluid from the-cylinder I12, the springs I84 return the piston H9 and move the jaws I68 away from the jaws 16.0 to release the strip and permit it to drop inthe receptacle 156, the limits of such return movements of the jaws I68 being determined by the engagement of pins I85 on the pairs of arms I162 with thebrackets I56 (Fig. 2). Since the waste material, including a portion of the toe box, may have some adhesive matter incorporated therein, mechanism is further provided for insuring. that .the strip of material will be detached from the jaws 1'60 and I68. For thus detachingthe material from the jaws L60 if it should adhere thereto, 'thejlower one of each pair of arms I62 is extended to provide another arm H36 having fast on its end a waste-engaging but the outer layer of the upper materials, carwaste material removed from the upper and being riers su porting said knives and movable with movable to carry the waste material away from them, members also movable with the knives for the shoe after the upper-trimming operation.
engaging the margin of the upper and for posi- 10. In a lasting machine, the combination with tioning it fiat .on the wipers in advance of the wipers for wiping the margin of an upper about knives, and supports for said members pivotally the toe end of a last inwardly over an insole on mounted on said carriers for movements heightthe last, of a plurality of trimming knives com- Wise of the shoe in response to pressure of the prising a middle knife movable lengthwise of the margin of the upper on the members. shoe and side knives movable Widthwise of the 6. In a lasting machine, the combination with shoe outwardly over the wipers to trim from the wipers for Wiping the margin of an upper about margin of the upper outspread on the wipers all the toe end of a last inwardly over an insole on but the outer layer of the upper materials, and the last, of a plurality of trimming knives commembers associated respectively with said difierprising a middle knife movable lengthwise of the ent knives and movable with them to press the shoe and side knives movable widthwise of the margin of the upper outspread on the wipers in shoe outwardly over the wipers to trim from the advance of. the knives, said knives and members margin of the upper outspread on the wipers all being arranged to receive and to hold between but the outer layer of the upper materials, carthem the waste material removed from the upper riers supporting said knives and movable with and being all movable as a unit after the upperthem, members also movable. with the, knives for trimming operation to carry the waste material pressing the margin of the upper outspread on away from the shoe. the wipers in advance of the knives, supports for 11. In a lasting machine, the combination with said members pivotally mounted on said carriers wipers for wiping the margin of an upper about for movements heightwise of theshoe, and spring the toe end of a last inwardly over an insole on means arranged to control said supports and 2 the last, of a plurality of trimmers movable outthereby to hold said members in pressure-applywardly over the wipers in different directions reing relation to the margin of the upper as they spectively to trim from the margin of the upper are moved outwardly, over it. outspread 0n the wipers all but the outer layer of '7; In. a lasting machine, the combination with the upper materials, members associated respecwipers for wiping the margin of an upper about tively with the different trimmers and movable the toe end of a last inwardly over an insole on with them to position the margin of the upper the last,.of a plurality of trimmers movable outoutspread on the wipers in advance of the trimwardly over the wipers in difi'erent directions remers, said members and trimmers being arranged spectively to trim from the margin of the upper to receive and to hold between them the waste outspread on the wipers all but the outer layer of 3: material removed from the upper and being movthe upper materials, and members associated reable tocarry the waste material to a discharge spectively with the different trimmers and movposition and thereafter reversely movable, and able with them to position the margin of the upmeans for gripping the waste material in said per outspread on the wipers in advance of the discharge position and for removing it from said trimmers, said members and the trimmers being 49 members and trimmers in response. to their rearranged to receive and to retain between them verse movement. after the upper-trimming operation the waste 12. In a lasting machine, the combination with material removed from the upper. Wipers for wiping the margin of an upper about 8:. In a lasting machine, the combination with the toe end of a last inwardly over an insole on Wipers for wiping the margin of an upper about 4% the last, of a plurality of trimming knives comthe toe endof a last inwardly over an insole on pri ing. a middle ife m v e len t w se 0f he the last, of a plurality of trimmers comprising shoe and side knives movable widthwise of the knives movable outwardly over the wipers in difshoe outwardly Ove t p s t0 trim fr t ferent directions respectively to trim from the margin-0f the upp r u sp ead n t pe s l margin of the'upper outspread 0n the wipers all 39 but the outer layer of the upper materials, and but the outer layer of the upper material and, members associated, respectively 'with said differmembers movable respectively with the difierent ent knives and movable with them to press the knives to position the margin of the upper outmarg n of t u p utsp d n t e wipers in spread on thewipers in advance of the edges of advance of the knives, Said knives nd m ers the knives, each of said members being yieldingly being nged'to eceive and to hold between movable heightwise of the shoe relatively to the them the Waste material removed from the ppe knife associated therewith in response to presnd ng all movable as a u i af the p sure of the margin of the upper thereon before trimming p r on to carry the Waste material the knife engages the upper and being. also yieldo a discharge pos ti n and. thereafter reversely ingly movable in an outward direction relatively 6o movable, and ppers arranged to grip in said to the knife to receive between it and the knife discharge Position pfl s 0f t Waste material the waste ateri I removed fr t upper exposed between the middle knife and. the side 9. In a lasting machine, the combination with knives and to remove it from a d n ves and wipers for wiping the margin of an upper about members in response to their reverse movement. the toe end of a last inwardly over n i l on as 13. In a lasting machine, the combination the lashofa plurality of trimmers movable outwith Wipers for Wiping the margin f an upper wardly over the wipers in diiferent directions re-- about the We 61111 of a last-inwardly Over an spectively t trim from the margin of the upper sole on the. last, of upper-trimming means movoutspread on the wipers all but theouter layer of able outwardly over the wipers to trim surplus the upper materials, and members associated remat a f o h mar f th upp r ut pr ad spectively with the different trimmers and movon the wipers, Said pp mmin m ns hav able with them to position the margin of the ing thereon means for retaining the surplus maupper outspread on the wipers in advance of the te ia mo e o e pp d being trimmers; sa d members and the trimmers being ab to Carry t e Surplus a e a Oa discharge arranged to receive and to hold between them the D fi d means- COmpriSing jaws arran ed to grip the surplus material between them in said discharge position and to remove it from the upper-trimming means.
14. In a lasting machine, the combination with wipers for wiping the margin of an upper about the toe end of a last inwardly over an insole on the last, of upper-trimming means movable outwardly over the wipers to trim surplus material from the margin of the upper outspread on the wipers, said upper-trimming means having thereon means for retaining the surplus material removed from the upper and being movable to carry the surplus material to a discharge position and thereafter reversely movable, and means for gripping the surplus material in said discharge position and for removing it from the upper-trimming means in response to the reverse movement of the latter.
15. In a lasting machine, the combination with wipers for wiping the margin of an upper about the toe end of a last inwardly over an insole on the last, of a plurality of trimmers movable outwardly over the wipers in difierent directions respectively to trim surplus material from the toe end of a last inwardly over an insole on' the last, of a plurality of trimmers movable outwardly over the wipers in diflerent directions respectively to trim from the margin of the upper outspread on the wipers all but the outer layer of the upper materials, members associated respectively with the difierent trimmers and movable with them to position the margin of the upper outspread on the wipers in advance of the trimmers, said members and trimmers being arranged to receive and to hold between them the waste material removed from the upper and being movable to carry the waste material to a discharge position and thereafter reversely movable, jaws arranged to grip the waste material in said discharge position between them and to remove it from said members and trimmers in response to their reverse movement, said jaws being relatively movable thereafter to release the waste material, and means for engaging the waste material to insure its detachment from said jaws when it is thus released.
17. In a lasting machine, the combination with wipers for wiping the margin of an upper about the toe end of a last inwardly over an insole on the last, of upper-trimming means movable outwardly over the wipers to trim surplus material from the margin of the upper outspread on the wipers, said upper-trimming means having thereon means for retaining the surplus material removed from the upper and being movable to. carry the surplus material to a discharge position, means comprising jaws arranged to grip the surplus material between them in said discharge position and to remove it from the upper-trimming means, said jaws being thereafter relatively movable to release the surplus material, and means for engaging said material to insure its detachment from said jaws when it is thus released.
18. In a lasting machine, the combination with wipers for wiping the margin of an upper about the toe end of a last inwardly over an insole on the last, of upper-trimming means movable outwardly over the wipers to trim surplus material from the margin of the upper outspread on the wipers, said upper-trimming means having thereon means for retaining the surplus material removed from the upper andbeing movable to carry the surplus material to a discharge position, means including a pair of jaws arranged togrip the surplus material between them in said discharge position and to remove it from the upper-trimming means, one of said jaws being thereafter movable relatively to the other to release the surplus material, a member movable with said movable jaw for engaging the surplus material to insure its detachment from the other jaw, and additional means for engaging the material to insure its detachment from said movable J'aw.
19. In a lasting machine, the combination with wipers for wiping the margin of an upper about the toe end of a last inwardly over an insole on the last in the course of a cycle of opera tions of the machine, of upper-trimming means the toe end of a last inwardly over an insole on the last in the course of a cycle of operations of the machine, of upper-trimming means movable outwardly over the wipers to trim from the margin of the upper outspread on the wipers all but the outer layer ofthe upper materials, a carrier supporting said upper-trimming means and movable heightwise of the shoe to carry said means into position thus to operate on the upper, and a member movable at the will of the operator into position to serve as an abutment to stop said carrier short of its normal limit of movement in case the machine is used to operate on the same shoe a second time.
BERNHARDT JORGENSEN.
US540174A 1944-06-14 1944-06-14 Lasting machine Expired - Lifetime US2395874A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646582A (en) * 1949-06-23 1953-07-28 United Shoe Machinery Corp Machine for operating on shoes
US2740144A (en) * 1953-11-03 1956-04-03 United Shoe Machinery Corp Toe lining trimming machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646582A (en) * 1949-06-23 1953-07-28 United Shoe Machinery Corp Machine for operating on shoes
US2740144A (en) * 1953-11-03 1956-04-03 United Shoe Machinery Corp Toe lining trimming machines

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