US1117300A - Treadle mechanism for bed-lasting machines. - Google Patents

Description

H. A. BALLARD.

TREADLE MECHANISM FOR BED LASIING MACHINES.

' APPLICATION FILED JAN. 11. 1907.

1,1 17,300, Patented Nov. 17, 1914.

3 SHEETS-SHEET 1.

IHE NORRIS PETERS 60.. PHOYDLITHOQ WASHINGTON. D. C.

H. A. BALLARD.

TREADLE MECHANISM r011 BED LASTING MACHINES.

APPLICATION FILED JAN. 11, 1907.

1,1 17,300, Patented Nov. 17, 1914.

3 BHEETS-SHEET 2.

ww w- THE NORRIS PETERS CO.. PHGTD LITHO.. WASHINGTON. D. C.

H. A. BALLARD.

TREADLE MECHANISM FOR BED LASTING MACHINES.

APPLICATION FILED JAN.11, 1907.

1,117,300. I Patented Nov. 17,1914.

3 SHEETS-SHEET 3.

THE NORRIS PETERS c0., PHOTO-LITMQ. WASHINGTON. o c

- UNITED STATES PATENT oEEIo HARRIE A. BALLARD, 0E SOMERVILLE, MASSACHUSETTS, ASSIGNOR r0 THE BOYLSTON MANUFACTURING COMPANY, or BOSTON, MASSACHUSETTS, A CORPORATION OF NEW JERSEY.

TREADLE MECHANISM FOR BED-LASTING MACHINES.

' Specification of Letters Patent.

nuance.

Patented Nov. 17, 1914:.

Application filed. January 11, 1907. Serial No. 351,813.

Treadle Mechanism for Bed-Lasting Ma chines, of which the following is a specification.

This invention has relation to machines for. lasting shoes, and more particularly to that class of such machines known as bedlasters, in which the edge of the upper of a shoe is pulled over the inner sole at the toe and heel of the partially formed shoe. This embodiment of the invention is in principle similar to that contained in the application Ser. No. 198,420, filed by me March 15, 1904 but involves four distinctly novel features. In the machine illustrated upon the accompanying drawings, the lasting operation is precisely the same as that for which the invention previously referred to was designed.

The object of the present invention is to provide for a lasting machine of this type,

certain improved instrumentalities designed to facilitate the operations by which the shoe is to be lasted.

The machine herein illustrated comprises two sets of wipers independently operative,

and mounted on separate carriages which are adapted to be moved toward and from each other, and means for supporting a shoe between the two sets of wipe-1's, said i. su )ortin means com risin a yielding main jack and a yielding toe jack arranged side by side and adapted to support the shoe in operative position.

The carriages referred to are provided with manually operative means for moving them with their respective wipers to and from operative position relatively to the shoe, and each is further provided with an actuator foractuating its respective set of wipers so to engage and operate upon the upper of the shoe.

The instrumentalities so far described do not in any wise differ from those employed in the machine of the aforesaid application,

side by side;

but I provide in the present invention in dependent manually operative means for movingthe carriages and wipers away from the shoe. The last named means is so con-t .structed and arranged with relation to the two jacks that, in addition to moving the wipers as described, it automatically retracts the jacks inopposition to their respective yielding means so slightly as to relieve'the pressure of the shoe against the wipers prior to and during retrograde movement of the wipers. By so relieving the pressure between the shoe and thewipers, the force required to move the wipers is lessened, and aside from that, the upper of the shoe is relieved of unnecessary chafing which wouldv otherwise result when the wipers are with drawn.

The first mentioned manually operative means by which the carriages with their wipers are moved into operative position,

are provided with locking means adapted to prevent retrograde movement thereof. The

. said locking means like those of the former machine consist of a ratchet and a manually controlled pawl for each. In the operation of my former machineit was necessary to disengage each pawl from its. ratchet by two separate operations in order to permit retrograde movement of the wipers. Now,

in the present invention, I provide instrumentalities which are adapted to disengage the pawls simultaneously, and which are adapted to be actuated bythe means hereinhefore referred to for imparting retrograde movement to the wipers.

The main jack and toe jack have their independently operative yielding means for normally holding them in operative position. and their independently operative treadles for retracting them from operative position, the said treadles, being. arranged The means for actuating the hereinbefore mentioned means for imparting retrograde movement to the wipers, con sists of'a third treadle interposed between the two jack treadles and resting upon .a'

laterally extending yoke whose ends rest upon the jack treadles. When the third treadle is depressed to actuate its several instrumentalities, it first effects the disen gaging of the retaining pai'ls from their respective ratchets, then by reason of frictional resistance of the wiper carriages or whatever other resistance may be incumbent thereupon, the said treadle effects a slight ret ograde movement of the jacks, thereby .l. aing friction of the shoe upon the wipers, and last a retrograde movement of the c iages.

its )reviously stated each carriage is provided with an actuator for its set of wipers, said actuator being adapted to be manually operated to open and close the wipers so as to engage and fold in the edge of the upper of the shoe. Vhen the edge of the upper is folded inwardly by the wipers, any preferred method of fastening the inturned edge may it performed, the latter having no bearing upon the present invention. But unless some means is provided for auto matically moving the actuators so as to open the wipers when the latter are moved bodily away from tie work, it is necessary to restore each. set of wipers independently to open position prior to a subsequent wiping peration. The object of the present inven tion is to so connect the wiper actuators as to cause them, when bodily moved in opposite directions, to automatically open the wipers.

Tn summing up the results attained by the novel devices incorporated into the machine. it will be seen that one is the retrograde bodily movement manually imparted to the two wiping mechanisms, second, the unlocking or releasing of the carriages supporting the wipers, third, the depressing or ret ograde movement imparted to the jacks, and fourth. the movement automatically imparted to the wiper actuators causing them to restore the wipers to their open or initial position.

teferring to the accompanying drawings f0 sing part of this spec1fication,-F1gure 11 1 is a front elevation of a bed-lasting machine provided with the instrumentalities designed in accordance with this invention. Fig. 2 is a perspective view of the cooperating treadle mechanisms. 3 is a secti onal plan view of the treadle mechanisms taken on the line 33 of Fig. 1. Fig. 4t is a front elevation of the yoke connecting the treadles together with the treadles in vertical section. Fig. 5 is a cross section on a line passing through the fulcrum of the bell crank levers. Fi g. 6 is a detailed view of one of the bell crank arms and a portion of its actuator. Fig. 7 is an end elevation of one of the wiper carriages. Fig. 8 is a plan view of the fore-part of a shoe and the toewiping mechanism in operative engagement therewith. Fig. 9 is a plan view of a shoe together with the heel and toe-wiping mechanisms in their relatively operative and inope 'ative positions, shown by full and dotted lines.

The same reference characters indicate the same parts wherever they occur.

The frame 10 of the machine is provided with guides 11 for a vertically movable main jack 12, and with parallel guides 13 for the vertically movable toe ack 14. The jacks 12 and 14: are provided with collars 15 15 adapted to be engaged by helical springs 16 16 coiled about the jacks so as to normally force the jacks upwardly. The upward movement of each jack is limited by an adjustable fixed stop 17 which normally impinges against a portion of the frame 10. The upper end of the jack 12 is provided with an oscillatory post or stud 18 which is fulcrumed upon a laterally extending pin 19, and which is adapted to enter the hole which is customarily provided in a last for this purpose. By reason of the oscillatory movement of which the post 18 is capable, the toe portion of alast and shoe mounted thereon is adapted to bear upon the upper extremity of the toe jack 14. The arm 18 has a laterally extending arm 20 which is connected to a spring 21, and which by reason of the tension of said spring exerts a yielding pressure which normally forces the toe portion of the shoe downwardly upon the toe jack. The two jacks are provided with independently adjustable instrumentalities by which the shoe supported. thereon may be adjusted to various positions, so as to meet whatever requirements exist, and since the adjustabilityo't' the shoe forms no part of this invention a detailed description of these instrumentalities is omitted. The frame 10 is also provided with guides and which extend transversely of the line of movement of the acks but in alinement with each other.

2st and indicate respectively the carriages which support the heel and toe-wiping mechanisms. The arrangement of the guides and their carriages is such that the heel carriage 24 is movable toward and from the heel portion of a shoe mounted on the jacks, and the toe carriage 2h is movable toward and from the toe portion of the shoe. Each carriage is provided. with agear rack 26 extending longitudinally thereof on its under side. (see Fig. 7). The means for moving each carriage consists of a pinion 27 mounted on a transverse shaft 28 and adapted to cooperate with the rack A h and wheel 29 is aflixed to each shaft 28 and adapted to be manuallv rotated to move the adjacent carriage in either direction. The hand wheels 29 are provided with ratchets 30 which are adapted to be engaged by pawls 31 fulcrumed upon stud shafts 32. The pawls 31 are provided with arms 33 which by means of gravity normally hold such as to cause them to effect the pawls in operative engagement with their ratchets, and by means of which the pawls may be manually disengagedfrom the. ratchets. The arrangement of the pawls and ratchets relatively to the hand Wheels is such as to permit movement of the two carriages toward each other and the shoe but to prebers 36 which are connected to and adapted to be actuated by a manually operative actuator 37 fulcrumed upon the base 34. The

toe-wiping mechanism which is practically the same as the heel-wiping mechanism, and which is shown more in detail in Fig. 8, comprises a pair of cooperating Wipers 38 and a manually operative actuator 39 fulcrumed at 40 to a portion of the base 35. The wipers are pivotally connected together by a stud 41 and connected to the actuator by suitable connecting pieces 42 and 43 whereby movement is communicated by the actuator to the wipers. vAlthough the wipers may be opened or closed irrespective of the location of the carriages relatively to the shoe, they are in practice preferably left 'open at all times excepting when the carriages and wipers as a unit are in operative position nearest the shoe, as illustrated by dotted lines in Fig. 9. When the wiping mechanisms are in the last named position, they are adapted to be actuated by their actuators, so as to close the wipers over the sole ofthe shoe, as illustrated by Fig. 8. When the wipers are so actuated to fold in the upper of the shoe, the position to which the shoe is adjusted by means of the adjusting instrumentalities of the jacks, hereinbefore mentioned in a general way, is, preferably a slight retrograde movement of the shoe and jacks in opposition to the springs 16 16. The main jack 12 is provided with ,atreadle 44 by which it is adapted to be depressed, and the toe jack 14 is likewise provided with av treadle 45 by whichit is adapted to be independently depressed' The rear ends of the treadles and 45 project through apertures .46 formed in a cross-brace 47 affixed to the frame 10, and are thereby fulcrumed upon the said brace.

Those parts of the machine hereinbefore described do not to any material degree vary from parts of which the machine in my hereinbefore mentioned application is composed and although the wiping mechanisms and their instrumentalities common both to the machines of the present invention and the aforesaid application are not minutely described, it will be understood thatthey are provided with the same adjusting instru-' mentalities as formerly. j

The present invention is not embodied in the aforesaid elements but in those hereinafter described which are adaptedto control and actuate the former.

Carriage returning mechanism-4mm means herein employed for returning one or'both of the wiper carriages 24 and 25 simultaneously to their respectively distant or inoperative positions, are adapted to be actuated by a manually operative treadle 50, hereinafter termed the third treadle.- This treadle is supported at two points which are adapted by reason of certain features hereinafter described, to alternate in operating as a fulcrum upon which the treadle operates. The member which under normal conditions acts as the fulcrum of the treadle 50 is a yoke 51 extending laterally across and; overlapping the treadles 44 and 45 at points near those points where the said treadles are connected to' their respective jacks. It may be seen therefore, that in a measure the treadle 50 is supported by and between the jacks and their elevating springs 16. One end of the treadle 50 is maintained in the desired position thereon by means of notches 48 extending laterally across the upper edges of said treadles. The lower edge of the yoke 51 occupies the notches 48 and is adapted to beadjusted laterally therein by means of set screws 49, ofiwhich one is mounted in each end of the yoke and adapted to abutagainst the side of the adjacent treadle.

It will be seen that by means of the con' struction and arrangeemnt of the yoke it maybe adjusted more toward one or the other of the treadles 44 and 45. The middle portion of the yoke 51 is offset so as to form a V-shaped depression 55 upon the upper edge of which the middle portion of the The recipro'catory member 52 is provided with a collar 57 affixed thereto and supporting a cross-bar 58 which extends equidistantly in either direction to the sides of the machine. One face of the bar 58 extends parallel and close to the rear face of the frame 10, by means of which, it is prevented from turning about the member The extremities of the bar 58 under'lie and are adapted to engage and move a pair of inwardly extending arms 59 which are formed integrally with squared stud shafts 60, (see Figs. 1 and The stud shafts 60 have cylindrical portions 61 which have bearing in ears formed on the frame 10, and in which they are adapted to oscillate. The squared portions of said stud shafts occupy squared holes formed in upwardly extending arms (53 63 which with their respective arms 59 59 constitute bell crank levers. The upper ends of the arms 63 68 are pivotally connected by links 64 (l t to the heel carriage 24: and the toe carriage 25 respectively (see Figs. 1 and 7). By means of the levers and links connected to the carriages, the treadle 50 is enabled to impart retrograde movement to both carriages or to either one which is in operative position. The arms 63 63 are further provided with cars 65 65 which are pivotally connected to rods 66 66. The lower ends of the latter extend through her 'es 6? (37 formed on the frame 10, and are provided with adjustable fixed stops 68 68 which are adapted to impinge against the bosses 6'7 67 when retrograde movement is imparted to the carriages and so to limit the movement of the latter. Under ordinary conditions in which it is assumed that no undue resistance is offered by the carriages 242 and 25, the yoke 51 serves as the fulcrum of the treadle 50, but it is hereinafter explained in what manner the yoke ceases to be the fulcrum of the treadle 50 and be comes a load instead.

(m-riagc-rcZeasng mechcmsm.-As hereinbefore stated one of the results effected by operating the third treadle is to unlock or rel-ease the hand actuated means by which the wiping mechanisms are moved into operative position. This releasing or unlocking operation consists in disengaging the retaining pawls 31 31 from the ratchets 30 30 prior to imparting retrograde movement to the carriages and The means for so disengaging the pawls consists of certain instii'umentalities interposed between the pawls and the reciprocatory member 52 and adapted to be actuated by the latter. These instrumentalities comprise a forwardly ex tending arm 69 rigidly attached to the upper end of the member 52 and a pair of oppositely disposed arms 70 7O affixed upon the stud shals 32 to which the pawls 31 31 are likewise affixed, as previously described. The arms 70 70 extend toward and overlap each other at a point directly over the extremity of the arm 69 and are adapted to be simultaneously elevated by the arm 69 when the member is actuated to impart retrograde movement to the carriages 24 and 25. It will, therefore, e seen that in this way pawls 31 81 are moved out of cooperative engagement with the ratchets 3O during the first part of the movement of the member 52. Although the pawls 81 31 are adapted to be simultaneously disengaged from their ratchets, it is plainly shown that they may be independently disengaged by means of the arms 33 33 if so desired.

Automatic jackdepressing nwcms.ihs hereinbefore stated there is conside able pressure existing between the wipers and the inturned edge of the upper when the wipers are closed together thereupon, and if this pressure were not reduced prior to retrograde movement of the wipers, the said movement would be attended by considerable unneeessary friction and resistance. I therefore arrange the carriage-retracting mechanism so as to relieve such pressure prior to retractory movement of the carriages. The treadles 1 1 and 15 being fulcrumed in the cross brace s7 and adapted to be independently depressed to lower the jacks 12 and 14;, are the only means provided for supporting the yoke 51, and it is therefore apparent that both treadles 14- and 15 may be simultaneously depressed by means of the yoke 51 when suliicient load is imposed upon the latter.

Assuming that the heel and toe carriages are in their operative positions relatively to the shoe and locked there by means of the rat-chets, and that the heel and toe wipers are engaging and maintaining downward pressure upon the pulled over portions of the upper, and assuming further that downward pressure is imposed upon the treadle 50, the yoke 51 serves initially as the fulcrum of the treadle, causing the member 52 to rise and disengage the locking pawls 31 from the ratchets 30. Further upward movement of the member 52 is momentarily arrested by the wiper carriages which are not yet free to be retracted, the pressure of the wipers upon the work holding the carriages stationary. Before the pressure upon the treadle can be increased sutliciently to overcome the holding action of the wipers and work the springs 16 yield to such pressure and the work is retracted from the wipers. This frees the wiper carriages and they, through the member 52, respond to the pres sure upon the treadle and recede until. their retracting mechanism is arrested by the stops 67, provided for that purpose.

It is practically impossible to so adjust the tension of the spring 16 tiat, when the heel and toe of the shoe are operatively en gaged and depressed by their respective wipers,- pressure of the heel wipers upon the shoe shall be exactly equal: to the pressure of the toe wipers. In order to com pensate for any difference of pressure exerted by two sets of wipers, the yoke 51 may be so adjusted with relation to the levers 441 5111(1'45 that downward movement of the treadle 50 may exert through the yoke 51 a greater pressure upon that jack which is the more strongly supported by its spring 16. As previously stated, the yoke and 0011- sequently its point of contact with/the treadle 50 may be adjusted toward or from either of the treadles eta-and 45 by means of'the set screws 49 49. The object of providing this means of adjustment is explained in the following description: Assuming that the toe jack is forced upwardly by its spring 16 against the toe wipers with greater pressure than that by which the heel jack is forced byits spring against the heel wipers, it is obvious that in order to depress both acks simultaneously, great downward pressure must be exerted upon the toe jack. Therefore, in order to cause'downward movement of the'treadle 50 to exert upon the toe jack a greater downward pressure than that exerted upon the heel jack,

the yoke 51 is adjusted so as to position its point of contact withthe treadle 50 closer to the treadle which actuates the toe jack. In all cases the aggregate pressure exerted by the yoke 51 upon the toe and heel treadles, is equal to that exerted upon the yoke by the treadle 50, andit is apparent that the distribution of that pressure depends entirely upon the relative positions of the points of contact between the yoke and the three treadles. When the point of contact with the treadle .50 is midway between the points of contact with the treadles M and as, pres sure upon the latter treadles is equalized, but they may be made to exert more on one jack treadle and less on the other jack treadle by adjusting the point of contact with the treadle 50. nearer to that jack treadle which is to receive the greater proportion ofthe pressure.

Automatic wiper-opening mechanism.- As previously stated in the description of the wiper mechanisms, the heel wipers and .toe wipers are adapted to be independently and manually operatedby means of the ac tuators 37 and 39. Inclosing the two sets of wipers over the work, it is desirable to actuate first one set and then the other and to leave them in their closed or operative positions so long as they are in position to engage the work. Heretofore it has been necessary to restore the wipers to open position independently of whatever other movement may have been imparted thereto. The wiper-opening mechanism provided in this invention is adapted to utilize the retr g be i ymo e t o hawip r necting members42 by which the actuators impartmovement to the wipers.

Assuming that the means connecting the ends 71 72 is of the correct length, the actuators are free to be moved to close the wipers, as shown by dotted lines in Fig. 9.

. The length of the member is preferably a little greater than the distance between the points of connection with the ends-71 72 when the'latter are in the position just described. lVhen the wiping mechanisms are moved bodily away from the work, the member 70 holds the rearward extremities'of the actuators thereby preventing little or no separationof said extremities, and as the fulcra 10 40 continue to move with their respective mechanisms, they actuate the actuators so as to restore the wipers to their open position.

The latter position of the actuators is illustrated in Fig. 1 and by full lines in Fig. 9. Restoring movement would likewise be imparted to only one of said actuators if the latters wiping mechanism were-the only one to "be-moved away. from the work, although of course in that case, the movement imparted to the actuator would be approximately one-half as great as that when both-wiping mechanisms are moved to their relatively distant positions.

A detail of construction by which suitable adjustment is provided for the carriage-returning mechanism is illustrated by Figs. 5, and 6. The range of movement of the member. 52 is invariable, and in order to insure the great amount of retrograde movement to be imparted to the wiper car- -.riages,some means by which this movement may be adjusted irrespective of the movement of said member is desirable. The said 7 adjusting means is shown on the drawings and comprises. a series of apertures v73 formed in the arms 59 59 at various distances from the shaft 60 from which said arms extend. Each of the arms 59 is provided with a screw-threaded bolt-74: which is adapted to occupy any one of the holes 7 3, and to be provided with one or more washers 75 and a screw threaded nut 76. The bolt 74 may be provided with the desired number of washers 75, and then passed upwardly through the desired hole 7 3 so that its screw threaded end projects above the arm 59 and is screwed in placeby the nut 76 which is adapted to draw up the head of the bolt against the washers and to clamp them; firmlyagainst the under side of the For vii

arm. The head of the bolt 72% is adapted when so attached to be engaged by the cross bar 58 when the latter is raised and to transmit movement to the arm. Any desirable number of washers may be supplied to cause the head of the bolt to project below the arm l9 far enough to eliminate undue clearance between the crossbar and the arm Further than taking up lost motion of the cross-bar, bolt 74: may be utilized to impart oscillation of more or less degrees to the arm 59 by inserting the bolt in the hole 73 farther from or nearer tot-he shaft 60. By providing means for engaging the cross-bar which may be shifted toward or from the center about which the arm 59 oscillates, the operative raoius of the arm may be varied so as to effect a variable range of movement in the levers which retract the wiper carriages.

Having thus explained the nature of the invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the modes of its use, I declare that what I claim is:

l. A lasting machine comprising a plurality of work-supports capable of independent jacking movement, a plurality of carriages for the wipers, a treadle, and means connecting the treadle with the supports and carriages whereby said supports and carriages may all be actuated by a movement of the treadle.

2. A lasting machine comprising a plurality of work-supports capable of independent acking movement, a plurality of carriages for the wipers, a treadle, means actuated by the treadle for moving said supports in unison, said means being also adapted to effect movement of said supports independently of each other, and means connecting the troadle with the carriages for moving the carriages.

3. A machine for operating upon boots and shoes, comprising a movable work support, an instrumentality for operating upon the work, a treadle, means arranged to trans mit motion from said treadle for retracting the work from said instrumentality, and means ar 'anged to transmit motion from said treadle for retracting said instrumentality from the work.

4:. 1i lasting machine comprising a plurality of supports for the work, a plurality of carriages for the wipers, locking means for the carriages, a treadle, and means operable by a movement of the treadle for re leasing said locking means, moving the wor supports, and moving the carriages.

lasting machine comprising heelwiping mechanism, toe-wiping mechanism, a pair of carriages, one for the heel-wiping mechanism, and the other for the toe-wiping mechanism, said carriages beingmovable in alinement toward and from each other, a jack for supporting a shoe between said carriages, means adapted to be actuated by hand to move the heel ca "riage to operative position, interlocking means engaging said hand-actuated means and. adapted to normally prevent retrograde movement of the carriage, means adapted to be actuated by hand to move the toe carriage to operative position, interlocking means engaging said second handactuated means and normally adapted to prevent retrograde movement of the toe carriage, and treadle mechanism adapted to move said locking means out of locking position and to impart retrograde movement to both of said carriages.

(3. A lasting machine comprising a yielding ack for the work, wiping means movable toward and from the work, means for retracting the wiping means from the work, and a treadle so connected to said jack and said retracting means as to retract the former or actuate the latter or both in the order of their lesser resistance.

7. A lasting machine comprising a plurality of yielding jacks for the work, a plurality of carriages for work-engaging instrumentalities movable toward and from the work, means for retracting such carriage or carriages as are relatively near the work, a treadle so connected to the jacks and to said retractin means as to retract the former or actuate the latter or both in the order of their lesser resistance, and instrumentalities mounted on said carriages for operating upon and frictionally engaging the work with such friction as to render the resistance of said retracting means greater than that of the jacks.

8. A lasting machine comprising a pair of movable jacks for the work, a plurality of carriages movable toward and from the work, instrumcntalities mounted on said carriages for operatively engaging the work, means for forcing the jacks with yielding force toward their operative positions, a pair of treadles, one for each jack, adapted to retract the jacks from operative position, a yoke connecting and supported by said treadles, a third treadle fulcrumed upon the yoke between the jack treadles, and means connected to and adapted to be actuated by said third treadle to impart movement to said carriages, said means being adapted to be the fulcrum of said third treadle at the point of connection therewith, thereby rendering the third treadle adapted to actuate the jack treadles.

9. A lasting machine comprising a pair of jacks movable in parallel directions, independently yielding means for each of the jacks, for forcing them in one and the same direction, a pair of independent treadles for retracting the jacks independently and in opposition to their yielding means, a yoke of which each end is supported by one of the treadles, a third treadle fulcrumed upon the yoke between said retracting treadles, a reciprocatory member engaging and adapted to be actuated by said third treadle and when held stationary 'to become the fulcrum of said treadle and thereby efiect a retracting movement of either or both of the retracting treadles when the third treadle is actuated, and means for adjusting said yoke and its fulcrum point toward or from either of the retracting treadles so. as to impose more or less of its load upon either of the same. V

A lasting'machinecomprising a pair or acks movable in parallel directions, means for yieldingly forcing the jacks in one and the same direction, a pair of inde pendent treadles for retracting the acks independently and in opposition to their yieldng means, ported by one of the treadles, a third treadle fulcrumed upon the yoke between said retracting treadles, a reciprocatory member connected to and adapted to be actuated by said third treadle, and means adapted to be ctuated by said reciprocatory member and to offer resistance of varying degrees which, when transmitted back to said third treadle is in excess of the resistance of said yoke, renders the point of connection between the third treadle and reciprccatory member the fulcrum of said third treadle, whereby actuation of said third treadle produces bodily movement of said yoke. 11. A lasting machine comprising a treadle having two points of support either adapted to serve as a fulcrum while the other is moved, a movable work support connected with the treadle at one of said points and adapted to be moved thereby, movable means for operating upon the work, and means connected with said treadle at the other of said points and with said movable means and adapted to be actuatedby the treadle and to serve as the fulcrum thereof to effect actuation of the work support.

12. A lasting machine comprising a plurality of sets of wipers, an actuator for each set of wipers adapted to open and close the same, a carriage for each set of wipers and actuator, and means connecting said actuators and adapted to actuate them when the latter are moved bodily in predetermined directions.

13. A lasting machine comprising a jack for the work, two sets of wipers, an actuator for each set of wipers adapted to open and close the same, a carriage for each set of wipers and actuator, said carriages being movable toward and from the work, and means connecting said actuators and adapted to actuate them to open the wipers when they are moved bodily a yoke of which each end is supaway from the work.

14. A lasting machine comprising a plurality of work-supports capable of independent jackingmovement, a plurality of carriages, a treadle, means actuated by the treadle for moving'said supports, and means actuated by said treadle for moving said carriages away from operative position.

15. A machine for operating upon boots and shoes, comprising a movable work support, an instrumentality movable toward and from the work for operating upon the work, a carriage for said instrumentality, means for locking said carriage in operative position, a treadle, and means operative by said treadle for unlocking said carriage and IHOVlDg'SZtlCl carriage and work support.

16. A machine for and shoes, comprising a movable work support, an instrumentality for operating upon the work, a treadle, means arranged to transmit downward movement of said treadle for retracting the work from said instrumentalport, a plurality of carriages movable independently of each other, instrumentalities mounted on said carriages for operating upon the work, means for locking said carriages, a treadle, and means operative by said treadle for unlocking said carriages and moving said work support.

19. A machine for operating upon boots and shoes, comprising a jackfior the heel end of a piece of work, a jack for the toe end of such piece or" work, said jacks having individual jacking springs and being capable of jacking and unjacking movement independently of each other, devices arranged to operate respectively upon the heel end and toe end of such piece of work. a treadle, means operable by said treadle for imparting uniacking movement to. both of said acks, and means operable by unjacking movement of said treadle for retracting said devices from such piece of work.

20. A machine for operating upon boots and shoes, comprising a jack for the heel end of a piece of work, a jack for the toe end of such piece of work, said jacks being capable-of jacking and .unj acking movement independently of each other, means for operating upon the heel end of-suchpiece'of operating upon boots I work, a carriage for said means, means for operating upon the toe end of such piece of work, a carriage for the last-mentioned means, a treadle, means arranged to transmit movement from said treadle for impart ing unjacking movement to both of said jacks, and means arranged to transmit such movement of said treadle for imparting retractory movement to both of said carriages.

21. A machine for operating upon boots and shoes, comprising a plurality of independently movable work supports, a plurality of independently movable carriages, means for locking said carriages, devices mounted upon said carriages for operating upon the work, a treadle, and means operative by said treadle for unlocking said can riages and for moving said carriages and said work supports.

22. A machine for operating upon boots and shoes, comprising a plurality of independently movable work supports, a plurality of independently movable carriages, means for locking said carriages independently of each other, devices mounted upon said carriages for operating upon the work, a treadle, and means operative by said treadle for unlocking said carriages and for moving said carriages and said work supports.

23. A machine for operating upon boots and shoes, comprising a movable work support, a plurality of carriages, devices mounted upon said carriages for operating upon the work, said carriages being movable in different directions from the work, a treadle, and means operative by said treadle for moving said carriages away from the work and for moving said work support.

24. A lasting machine comprising a heel jack, a toe jack, end wiping mechanisms for lasting a shoe supported on said jacks, ach of said mechanisms including a sliding carriage, wipers thereon and an actuator for the wipers, a treadle for each of said jacks for effecting a relative vertical movement of each jack and the corresponding end wiping meclninism, and mechanism including a treadle supplemental to the first-mentioned trcadles for effecting a simultaneous relative vertical movement of both jacks and their corresponding end wiping mechanisms.

A lasting machine comprising wiper mechanism, a sliding carriage therefor, means for locking said carriage to hold the same in working position, and treadle mechanism arranged to move said locking means to release said carriage and to retract said carriage from working position.

"26. A lasting machine comprising wiper mechanisms, sliding carria for said mechanisms, said carriages being movable in- Copies of this patent may be dependently, independent locking means for each of said carriages, and treadle mechanism arranged to actuate said locking means to release said carriages, and to retract said carriages.

27. A lasting machine comprising wiper mechanism, a sliding carriage therefor, a ratchet and coacting pawl arranged to lock said carriage against movement away from working position, and treadle mechanism arranged to disengage said ratchet and pawl and retract said carriage.

28. A lasting machine comprising wiper mechanisms, independently movable carriages therefor, ratchets and pawls arranged to lock said carriages independently of each other against movement away from working position, and treadle mechanism arranged to disengage said pawls from said ratchets and to move said carriages from working position.

29. A lasting machine comprising wiper mechanism, a carriage therefor, means adapted to lock said carriage against movement away from working position, a treadle, and mechanism operable by a simple movement of said treadle in one direction and arranged to actuate said locking means to release said carriage and to move said carriage away from working position.

30. A lasting machine comprising a carriage, a wiper movably mounted thereon, and means arranged to actuate said wiper relatively to said carriage in consequence of movement of said carriage.

31. A lasting machine comprising a carriage, a wiper movably mounted thereon, and means arranged to move said wiper away from the working position relatively to said carriage in consequence of movement of said carriage away from working position.

A lasting machine comprising shoesupporting means, a wiper, movable means for carrying said wiper to and from working position in a plane substantially parallel to the plane of the sole of the shoe, one of said means being otherwise movable to relieve the pressure of said wiper upon the pulled-over portion of the shoe upper, a treadle, mechanism operable by a movement of said treadle to impart pressure-relieving movement to said one of said means as aforesaid, and means operable by such movement of said treadle to retract said wipercarrying means in said plane.

In testimony whereof I have affixed my signature, in presence of two witnesses.

HARRIE A. BALLARD.

Witnesses Ci-mnnns S. Jonnson, A. L. Fonsoar.

Commissioner of Patents,

Washington, D. G.

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