Oct. 22, 1946. ,4 c. A. ROBlNSON 2,409,642 LASTING MACHINE Original Filed Dec. 20, 1944_ 2 Sheets-Sheet 1 2 Inventor CharlesAJE’obinson h is Afrorn e51 . M! Oct, 22, 1946. , c. A. ROBINSON 2,409,642 LASTING MACHINE Original Filed Dec. 20, 1944 2 Sheets-Sheet 2 Charles A . Fobinson Patented Oct. 22, 1946 2,409,642 ‘ UNITED STATES‘ PATENT ‘ OFFICE 2,409,642 ‘ LASTING MACHINE Charles A. Robinson, Salem, Mass., assignor to United Shoe Machinery Corporation, Fleming ton, N. J., a corporation of'New Jersey Original application December 20, 1944, Serial No. 568,964. Divided and this ‘application August 10, 1945, Serial No. 610,111 5 Claims. (01. 12-14) 2 This invention relates to lasting machines, the present application being a division of a copend ing application for Letters Patent for improve ments in Machines for use in the manufacture of shoes, Serial No. 568,964, ?led on December20, 1944. The machine shown in that copending ap plication, in which the present invention is here in illustrated as embodied, is a power-operated in the upwiping operation ‘with danger of apply ing excessive pressure to the upper. The invention will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims. In the drawings, , Fig. 1 is a view in right-hand side elevation of a portion of the machine in which the invention toe-lasting machine constructed in many respects ' is shown as embodied; Fig, 2 is a plan view on an enlarged scale of as disclosed in United States Letters Patent No. vl0 the wipers and of parts closely associated there 2,160,846, granted on June 6, 1939, on an appli cation of F. C. Eastman’s and A. F, Pym’s‘. In with; and ‘ r Fig. 3 is a view partly in right-hand side ele common with that prior disclosure the machine vation and partly in section, also on an enlarged is provided with wipers which in the course of a cycle of power operations of the machine are 15 scale, showing portions of the wiper-operating moved heightwise of the last to perform what is means. 7 i commonly known as an upwiping operation on As more fully disclosed in the above-mentioned the toe end of the upper and in ‘automatically determined time relation to that movement are advanced lengthwise of the last and are closed inwardly widthwise of thelast into positions to render them thus effective on the upper, such invention is herein shown as embodied is pro vided with a device 2 for positioning a welt shoe in proper relation to the toe-lasting means copending application, the machine in which the‘ by engagement with the bottom face’ of the toe end of the insole and with the inner face of the closing action on the wipers terminating after the‘ lip of the insole at the end and the sides of the beginning of their movement heightwise of the last. An object of the present‘invention is to 25 toe upon presentation of the shoe to the machine, the position of‘ a shoe thus determined being provide improved means for operating the wipers, indicated by broken lines in Fig. 3. Shortly after and especially to render more uniform their oper the starting of the cycle of power operations of ations on shoes of di?erent styles. While the in the machine the shoe is clamped against the vention is herein illustrated as embodied‘ in a modi?cation of the wiper-operating means shown 80 shoe-positioning device 2 by a toe rest 4 which is in the above-mentioned Letters Patent, it is to be understood that it is not thus limited in its moved upwardly into clamping position. As part of the lasting means the machine has a pair of wipers B which are advanced lengthwise of the last and are closed inwardly widthwise of the With the above-stated general object‘ in view, the invention provides means for varying, as may 35 last to embrace the upper closely about the toe end of the last and in automatically determined be desirable for shoes of di?erent‘styles, the‘ time time relation to their advancing and closing in the operation of the machine when‘the closing movements are swung upwardly to wipe the upper action on the wipers to bring them into positions heightwise of the last, after which they-are fur for the upwiping operation is terminated. The construction shown includes a cam and connec 40 ther advanced and closed to wipe the marginal portion. of the upper inwardly over the feather tions leading therefrom to the wipers for par and against the lip of the insole, the lip being tially closing them, and another cam which by supported against the inward pressure ‘of the relative movement of parts of those connections wipers by the shoe-positioning device 2. The supplements the wiper-closing action of the first, wipers are secured to wiper holders 8 which are cam and is adjustable to vary, the time of its ‘supported on a wiper carrier Hi and are guided action on ‘the wipers. Accordingly, the, time applicability. ‘ ‘ i 1 when the wipers by their closing movements ar by the carrier for movements about an axis ex tending heightwise of the shoe substantially at rive in positions for effective upwiping action on the end of the toe to close the Wipers inwardly the “upper may be advanced or delayed relatively to the time of their movement heightwise of the 50 widthwise of the shoe. The wiper carrier is sup ported at its front end for movements to advance last, depending upon the style of shoe to be lasted, and retract the wipers lengthwise of the shoe on so that if the, shoelhas a comparatively low or a pair of links I2 which are spaced apart width receding toe the wiperswill not be closed so far wise of the shoe and are pivotally connected at inwardly as to necessitate that they be thereafter wedged apart substantial distances by the shoe 55 their upper ends to the carrier. At its rear end 2,409,642 4 the wiper carrier is further supported on the upper end of a lever 54 which is pivotally mounted between its upper and lower ends on a fulcrum rod [5. The upper arm of the lever M is pivot movement is imparted to the bell-crank lever 4G to close the wipers in time relation to their advancing movement lengthwise of the shoe and when reverse movement is imparted to the arm ally connected by a rod I8 to the Wiper carrier Ci 5'6 the wipers are opened. By the portion a of the cam track'52 closing. movements are imparted and, in effect. serves as a link substantially to the wipers preparatory to the wiping of the parallel to'the links l2: The links F2 are pivotally upper heightwise of the last, and by the portion 1) connected at their lower ends to arms 25, only one of.‘ the cam track they are thereafter further of which is visible in the drawings, these arms being fast on a rockshaft 22 mounted in bearings - 1 O. closed-to wipe the marginal portion of the upper in the frame of the machine. Also fast on the rockshaft 22 is an arm 24 provided with axrollfz?.» which lies in a cam track 28'2f'orm‘ed ineone'side of a cam member (not shown) fast‘o'n a cam inwardly over the insole, these movements being herein shaft 36. shown Only byadotted fragment lines,of but this.itcam corresponds: trackis. withpartial'retractive movements thereof length to the cam track I98 of the above-mentioned Let: wise of» the‘ shoe; the downward pressure of the wipers on the upper having been somewhat re lieved at that time by the action of the cam track 28 on the Wiper carrier Iii. Thereafter the portion (1' of the cam. track 52' again closes the wipers simultaneously with a second advance thereof lengthwise of the shoe, in' time relation to which movements they are again moved down— wardly to increase their pressure on the upper, all in accordance generally with the disclosure of the above-mentionedLetters Patent. It will be evident that if'the closing movements ters Patent No. 2,160,846. Through this mecha nism the wiper carrier ii) is swung upwardly about the rod it to cause the wipers to wipe the upper heightwise of the last and is later oper ated to increase the downward pressure of‘ the wipers on the marginal portion of‘ the upper over the insole. To advance and retract the wiper carrier and the wipers lengthwise of the shoe, the lever I4 is swung about the rod‘. l6‘ by a cam track 32 formed in one side of a gear ‘wheel 3!!» on the‘ cam‘ shaft 33, the lever carrying a roll 35 which lies in the cam track; It will be under stood that' when the wiper carrier is thus oper ated‘l the links [2‘ swing idly about their pivotal accompanied by: corresponding bodily advancing movements of the’ wipers lengthwise of the shoe. The receding portion 0 of the cam track later serves-partially to openthe wipers simultaneously of the wipers to bringtheir edges into‘ positions for wiping the upper heightwise of the last take place, as heretofore, in an invariable time relation to their upwipingmovements, the positions of the edges of the wipers when they ?rst become effec connections with the arms 29. Through spring means not herein shown but fully disclosed in tive on the upper may depend upon the style of ' Letters Patent No. 2,160,846 provision is afforded for‘ yield to" prevent damage to the shoe or to - . the shoe. That is, in operating, foriexample, on a shoe having a comparatively high toe the wipers the machine when the upstanding margin of the‘ upper is pressed against the lip of the insole may not be closed inwardly to- any substantial extent beyond’ the widest‘ portion of the toe, while by the action of the lever M on the wiper car in- operating on a- shoe having a comparatively The wiper holders 8 are operated to close the 40 low or receding toe they maybe closed more or wipers inwardly widthwise of the shoe through less inwardly under the sides of’ the toe before links 38 (Figs. 2 and 3) connected respectively they become effective on the upper. In the lat ter case the wipers are thereafter necessarily’ to the different holders and both operated by a forced somewhat apart against the resistance of‘ slide 120‘ mounted for movements lengthwise of the springs 42 by thewedging action of the shoe the shoe on the wiper carrier I9. Associated with these links are comparatively light springs 42 thereon as they are-moved farther upwardly. To through which the wipers are pressed yieldingly avoid any possible‘ danger of» excessive pressure against the sides of the toe in the wiping of the of the edges of the wipers on the upper under upper heightwise of the last. As disclosed in those conditions, the construction herein shown Letters Patent No. 2,160,846, the yield'of these 50: is such that the time when- the- closing action on the wipers to bring them into'positions for wiping springs is limited to render the slide it] positive the upper heightwise of the last is terminated in its action on the wiper holders 8 when the upper is thereafter pressed inwardly by the wipers may be varied. To this end, the closing of the rier. against the lip of the insole. Through spring mechanism 44, the construction of which need not be herein described in detail in view of the disclosure in the above-mentioned Letters Pat ent, the slide G9 is operated to close the wipers by a bell-crank lever t6 mounted to swing about a shaft ‘it supported by the wiper carrier i5), this be1l~crank lever being connected by a pair of links- Bil, only one of which is herein shown, to the‘ spring mechanism. This spring mechanism is yieldable to prevent damage to the shoe or to the machine when the upper is pressed against the lip of the insole by the closing of the wipers. wipers to those positions'is effected, not alone by - the cam track 52, but by additional means which supplementsthe action of this cam track and the time of operation of which is adjustably variable. As» shown in Fig. 3, the means connecting the wiper-closing bell-crank lever 4.6 to the arm 8-’) which operates it comprises a pair of toggle links 62 and Eli pivotally connected respectively to the bell-crank lever and to the arm and connected together by a pin 66. This pin is connected by a link 68 to an arm ‘H3 which is fast on the pre viously mentioned shaft ‘38 on which the bell crank lever 46 is loosely mounted, and also fast The bell~crank lever 4-5 is operated by a cam track 52 formed in one side of the gear wheel 34 and acting on a roll 54 carried by an arm 55 on this shaft is an arm 12 (Fig. 1) connected by a link ‘M to the upper end of an arm 76 which is pivotally mounted at its lower end on a bracket which is fast on a roc'kshaft 58 on the frame. Also fast on this rockshaft is an arm 6% con '18 on the frame. nected to the bell-crank lever 45 by means pres ently to be described, so that when swinging movement in a counterclockwise direction (Fig. of a cam 82 which is secured on one side of an 3) is imparted to the arm 56. corresponding Mounted 0n the arm 16 is a roll BE} arranged to be engaged by the periphery other cam 84 with which the machine is provided, this cam being fast on the cam shaft 30. The cam 82 is thus adjustably secured to the cam 84 2,409,642 by screws 86 extending through slots 88 in the cam 82. A spring 90 connected to the arm 16 tends to swing the arm toward the left, as the parts are viewed in Fig. 1, and thereby tends to turn the shaft 48 in a clockwise direction, the roll at being initially spaced somewhat from the cam 82. A screw 92 (Fig. 3) which is threaded in an upwardly extending lug on the upper end of the link 64 and engages a lug on the side of the link *62 limits the turning of the shaft 48 under the i in?uence of the spring 90 and adjustably deter mines the normal positions of the toggle links 62, 64 with the toggle broken toward the left as the parts are viewed in Fig. 3. In these positions the links provide an operating connection between 6 tions thus to act on the upper, said wiper-closing means being adjustable to terminate such closing action on the wipers at a variably predetermined time with respect to said relative movement. 2. In a lasting machine, wipers for engaging an upper about the toe end of a last, power operated means for effecting relative movement of said wipers and the last to cause the wipers to wipe the upper heightwise of the last, and means for closing the wipers inwardly widthwise of the last in predetermined time relation to said rel ative movement to bring them into positions thus to act on the upper, said wiper-closing means including a cam adjustable to terminate its closing action on the wipers at a variably pre the arm 60 and the bell-crank lever 46. At a time determined time with respect to said relative in the cycle of operations which may be varied movement. by adjustment of the cam 82 about the axis of 3. In a lasting machine, wipers for engaging the camshaft 30 in the manner permitted by its an upper about the toe end of a last, power screw-and-slot connection with the cam 84 a 20 operated means for effecting relative movement rise 94 on the cam 82 engages the roll 8!] and of said wipers and the last to cause the wipers to through the mechanism described straightens the wipe the upper heightwise of the last, means for toggle 62, 64, thereby imparting further closing ' closing the wipers inwardly widthwise of the last movements to the wipers supplementary to the in predetermined time relation to said relative closing movements effected by the portion a of . movement to bring them into positions thus to the cam track 52. In this manner the wipers act on.the upper, said wiper-closing means in are closed to positions for the effective wiping cluding a cam for partially closing the wipers of the upper heightwise of the last. It will be and another cam for further closing them, said understood that in operating on shoes having other cam being adjustable to terminate its clos comparatively high toes the cam 82 will be so 30 ing action on the wipers at a variably prede adjusted as to advance the time of the straight termined time with respect to said relative ening of the toggle, and that in operating on shoes having comparatively low or receding toes the cam will be adjusted to delay the straight movement. 4. In a lasting machine, wipers for engaging an upper about the toe end of a last, power ening of the toggle relatively to the movement 35 operated means for effecting relative movement of the wipers heightwise of the last, so that the of said wipers and the last to cause the‘wipers wipers will not be closed inwardly under the sides to wipe the upper heightwise of the last, a cam of the toe in such manner as to cause them there and connections leading therefrom to the wipers after to be wedged apart to‘ any substantial ex for closing them inwardly widthwise of the last tent by the action of the shoe thereon. It will 4 0 toward positions for thus operating on the up further be understood that adjustment of the screw 92 will serve to vary the initial positions of the wipers widthwise of the shoe and corre spondingly to vary the amount of movement im parted to the wipers by the cam 82 by varying the position of the roll 80 relatively to the cam. Since the manner of operation of the construc tion provided by the invention has been fully ex plained above, no further explanation thereof is necessary. ‘ Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is: 1. In a‘ lasting machine, wipers for engaging an upper about the toe end of a last, power operated means for effecting relative movement of said wipers and the last to cause the wipers to wipe the upper heightwise of the last, and means for closing the wipers inwardly widthwise of the last in predetermined time relation to 60 said relative movement to bring them into posi per, and another cam for supplementing the wiper-closing action of said ?rst-named cam by relative movement of parts of said connections, said other cam being adjustable to vary the time of its action on the wipers. 5. In a lasting machine, wipers for engaging an upper about the toe end of a last, power operated means for effecting‘relative movement of said wipers and the last to cause the wipers to wipe the upper heightwise of the last, a cam and connections leading therefrom to the wipers for closing them inwardly widthwise of the last toward positions for thus operating on the upper, said connections ‘including a toggle bodily mov able thus to act on the wipers, and another cam associated with said toggle for ?exing it and for thereby supplementing the wiper-closing action of said ?rst-named cam, said other cam being adjustable to vary the time of its action on the wipers. ‘ ‘ CHARLES A. ROBINSON.