US1399754A - Lasting-machine - Google Patents

Description

R. E. DUPLESSIS.

LASTING MACHINE.

APPLICATION FILED MAR. 7. 19:9.

Patented Dec. 13, 1921.

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'IIITIIIIL I 51'!!! UNITED STATES RENE n. nurnnssrs, or BEVERLY, MASSACHUSETTS, Assrenon T0 nnrrnn smm MACHINERY oonronarron, or rarnnson, new JERSEY, a. oo'nroaa'rron on NEW JERSEY.

LASTINtZr-MACHINE.

Specification of Letters Patent.

Patented Dec. 13, T9921.

Application filed March 7, 1919. Serial No. 281,115.

T 0 all whom z'tmag concern:

Be it known that I, RENE E. DUrLnssrs, a subject of the King of Great Britain, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Lasting-Machines, ot' which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures. r

This invention relates to lasting machines of the bed type and particularly to work supports for machines such as that disclosed and claimed in application for Letters Patent of the United States Serial No. 1615M, filed April 11, 1917, byMatthias Brock.

Bed lasting machines of a usual commercial construction such as that disclosed in said application comprise a toe rest upon which the shoe .toe is clamped by a holddown which applies pressure to the ball of the shoe over the shoe and a heel pin which supports the rear end of the shoe. The machine also comprises a toe lasting head movable vertically and adjustable longitudinally of the shoe, the toe rest being connected to the toe headfor adjustment therewith in adapting the machine for dilterem lengths of shoes. The machine further has a heel lasting head which carries the heel pin and is movable longitudinally of the shoe to move the shoe into and out of opera-- tive relation to the toe rest and toe head. The toe post which supports the toe rest is preferably arranged for adjustment longitudinally of the shoe relatively to the toe head to accommodate shoesot different sizes. This adjustment and the adjustment of the toe head and restibodily are effected approxmately before clamping pressure is applied by the holddown to hold the shoe. It is frequently necessary or desirable to advance the toe head slightly during the lasting operation and this should be effected without the accompanying rearward movement of the toe rest whichmovement, if permitted, would tend to displace the tip seam or mar the shoe by rubbing ofthe rest upon it.

Accordingly, features of the present invention consist in a novel organization which provides yielding means between the toe head and the toe post so constructed and arranged as to permit movement of the toe headwithout any resultant rubbingof the shoe by movement of the toe rest, and which provldes yielding means also between the toe post and the head" so constructed and arranged as to permit a limit of movement of the post rearwardly relatively to the toe head to avoid rubbing of the shoe upon the rest during rearward movement of the shoe in the unjacking operation.

These and other features of the invention wlll appear more fully from the following description when read in connection with the accompanying drawing and will be pointed out in the appended claims.

In the drawing;-

Figure 1 is a front elevation of a lasting machine embodying the present invention;

Fig. 2 is a view partly in section, showing the toe post construction and a shoe being operated upon;

Fig. 3 is a detail View, partly in section, of parts shown in Fig. 2; and

Fig. 4 is a perspective detail of parts shown in Fig. 3.

. Fig. 5 isa horizontal section of theparts shown in Fig. 3 as viewed from below.

The machine comprises a frame 2 adapted to stand on the floor and to carry toe and heel lasting mechanisms between which the shoe supporting means is located. The sup porting means comprises a heel pin land a toe rest 6 which are operated as disclosed in the above-mentioned application to jack and unjack the shoe. A holddown 7 is also provided to apply pressure to the shoe bottom to hold the shoe firmly upon the toe rest 6. The toe lasting mechanism is carried upon the toe head frame 8 which is arranged as usual for vertical movement relatively to the shoe and for adjustment longitudinally of the shoe by a hand wheel 9, the lasting wipers 10 being movable relatively to the toe head to perform their functions by a hand lever 11. The toe rest 6 is carried by a post 12 which does not partake of the vertical movement of the head 8 but is supported and operated by a slide 14 which is movable vertically in the frame 2 and is operated by a suitable cam to effect the vertical jacking" and unjacking movements of the rest. The toe post has a vertical bearing in a post guiding member 16 which is connected to the toe head 8 for movement therewith to adjust the head and post for difierent lengths of shoes. The connection between the member 16, and through which the post passes,

and the head is constructed in accordance with the present invention to permit limited' movement of the head 8 relatively to the toe rest when the rest is held from movement by pressure of the shoe upon it so that the head may'advance toward the shoe without movement of the rest, and also to permit limited movement of the toe rest with the shoe when it moves rearwardly in the unjacking operation. To this end the member 16' has a stem 18 which is mounted in a suitable bearin in a slide '20 mounted for longitudinal adjustment in the frame 8. The slide 20 is held in the head by a still spring 22 connected at one end to the head and at the other end to a pin 24 in the bore of the slide 20. vThe spring 22 holds a stop screw 26, which is threaded through a lug 28 on the slide 20, against the frame 8, and by adjustment of the screw the position of the slide 20 relatively to the head, and hence the normal relative position of the rest and head, may be varied. In the stem 18 of the member 16 is a pin 30 which lies in a slot formed in and extending longitudinally of the slide 20 and light springs 34-, 36 are arranged in the slot, one on each side of the pin 30. To guide and support the member 16 on the slide 20, the member '16 is provided with surfaces 40, 42 which overhang and underlie respectively suitably formed surfaces on the slide 20, the surfaces being, of course, parallel to the direction of sliding movement of the stem 18 in the slide 20. The springs 34, 36 maintain the member 16 and hence the toe post in the normal or central position of its movements relatively to the slide20 and longitudinally of the shoe and toe head and permit a substantially free relative movement between the toe head 8 and toe rest post 12, limited in one direction by contact of the member 16 with a surface 46 on the slide 20 and in the other direction by full compression of the spring 36 by the pin 30.

The heel pin is mounted to move with a heel carriage 50 which is moved toward the toe rest 6 before the shoe isplaced in the machine and is held in operative relation thereto a latch The shoe is placed upon the heel pin 4 with its forepart supported by the rest 6, and a handle 56 on a handwheel 57 is operated to movethe last pin rearwardly and'raise it at the same time, thus causing'the rear end of the shoe to be firmly held by a heel band 58,'the handle 56 being held from return movement by a locking device indicated at 60 in the drawing. The holddown 7 is then applied to the 'forepart of the last and holds the shoe firmly against the' 'rest 6. "The wipers 10 are brought-against-the toe end of the shoe by means of the handle 11 and the toe head is raised to cause the upper to be wiped upwardly toward the'bottom of theshoe, the

wipers then being advanced over the shoe bottom. During the toe lasting operation it is frequently desirable to advance the toe head 8 by means of the hand wheel 9 and when this is done it is important that there be no rubbing of the toe rest 6 upon the shoe. In the construction described the toe post 12 may remain stationary while the head 8 is moved. In this case the slide 20 moves forwardly relatively to the stem 18, the spring 34- being thereby compressed during this relative movement. When the shoe is unjacked after the heel lasting operation, the latch and the locking device 60 which holds the handle 56 are released. the heel carriage 50 moves rearwardly, and the heel pin l is allowed to move away from the band. This effects nnjacking the shoe and the rearward movement of the carriage 50 and last pin 4% move the shoe longitudinally relatively to the rest 6. The holddown 7 is also released from the shoe prior to or in conjunction with the unjacking operation. The rearward movement of the shoe with the heel carriage 50 is sometimes initiated while the shoe is still pressed upon the rest 6 with considerable force and hence it is desirable to permit a limited movement of the toe rest 6 with the shoe during the unjacking operation. This is permitted, in the present construction, by movement of the stem 18 outwardly in the slide 20, causing relief of the spring 34 if compressed, and the compression of the spring 36 if the rearward movement of the toe post continues. The limited movement of the toe post 12 and the toe rest 6 relatively to the toe head 8, therefore, prevents undesirable rubbing of the restupon the shoe during the operation of the machine upon the shoe.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a bed lasting machine, a toe head movable longitudinally of the shoe, a toe rest having a post, a member to which the toe post is connected, said member being mounted on thetoe head for limited movement in the direction of the length of the shoe, and yielding means between the head and the post to enable the head to be moved longitudinally of the shoe without movement of the post.

2. In a bed lasting machine, the combination of a toe lasting head, a heel support movable longitudinally of the shoe, a toe post, and yielding means between the toe post and the toe head to permit movement of the post with the shoe when the heel support moves rearwardly in the unjacking operation.

3. In a bed lasting machine, a toe head, a toe rest having a post, a support for the lower end of the post, a slide mounted in the head for adjustment longitudinally of the shoe, means for adjusting the slide, a member mounted for movement on the slide in the same direction as the adjusting movement of the slide and having a vertical bore to receive the toe post, and yielding means for holding the member in the central posi tion of its movement relatively to the slide and permitting relative movement of the slide and member in either direction.

l. In a lasting machine, the combination oi a toe lasting head movable longitudinally of the shoe, a rest "for supporting the toe end oi? the shoe, a post on which the rest is mounted, a post guiding member mounted in the machine head for movement longitudinally of the shoe and having a bearing in which the toe post may move vertically, and springs for maintaining said member and post in the central position of its movenient longitudinally of the shoe and permitting relative yielding movement of the member and head in either direction from said central position.

5. In abed lasting machine, the combination of a toe lasting head movable longitudinally oi the shoe, a heel support movable longitudinally of the shoe, a toe post carrying a toe rest arranged for movement with the head, yielding means between the head and post to permit the head to be advanced without moving the post when the shoe is pressed upon the rest, and yielding means between the post and the toe head to permit movement of: the post with the shoe when the heel support moves rearwardly in the unjacking operation.

6. In a bed lasting machine, a toe head, a toe rest having a post, a support for the lower end of the post, a member embracing the post in which the post may move vertically, said member being mounted in the toe head for movement in the direction of the length of the shoe, and yielding means for maintaining the member and post in central position and permitting limited movement of the head Without imparting movement to the toe post.

7. In a bed lasting machine, the combination of a toe lasting head, a heel support movable longitudinally of the shoe, a toe post, and connections between the toe post and the toe head constructed and arranged to permit movement of the post with the shoe when the heel support moves rearwardly in the unjacking operation.

8. In a bed lasting machine, the combination of a toe lasting head, a heel support movable longitudinally of the shoe, a toe post, connections between the toe post and the toe head to permit movement of the post with the shoe when the heel support moves rearwardly in the unjacking operation, and means operative to restore the post to normal position after the shoe is released.

9. In a bed lasting machine, the combination of a heel support movable longitudi nally of the shoe, a toe lasting head movable longitudinally of the shoe, a toe post carrying a toe rest, said post being arranged for movement with the head, and connections between the head and the post construoted and arranged to permit the head to be advanced without moving the post when the shoe is pressed upon the rest, said connections also permitting movement of the post with the shoe and relative to the head when the heel support is moved rearwardly in the unjaclring operation.

10. In a bed lasting machine, the combination of a heel support movable longitudinally off the shoe, a toe lasting head movable longitudinally of the shoe, a toe post carrying a toe rest, said post being arranged for movement with the head, connections between the head and the post constructed and arranged to permit the head to be ad vanced without moving the post when the shoe is pressed upon the rest, said connections also permitting movement of the post with the shoe and relative to the head when the heel support is moved rearwardly in the unjacking operation, and means operating to restore and centralize the post relatively to the head when the post is displaced either by movement of the head relatively to the post or by movement of the post relatively to the head.

In testimony whereof I have signed my name to this specification.

RENE E. DUPLESSIS.

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