US1117775A

US1117775A - Sole-leveling machine.

Info

Publication number: US1117775A
Application number: US83576014A
Authority: US
Inventors: Philip A Bowen
Original assignee: LILLIAN A LITTLE
Current assignee: LILLIAN A LITTLE
Priority date: 1914-05-01
Filing date: 1914-05-01
Publication date: 1914-11-17
Anticipated expiration: 1931-11-17

Description

P. A. BOWEN.

SOLE LEVELING MACHINE.

APPLICATION FILED MAY 1, 1914 1,1 1?,775, Patented Nov. 17, 1914.

*Niinesses. Inventor.

WITED STATES PATENT onnion.

PHILIP A. BQWEN, OF LYNN. MASSACHUSETTS, ASSIGNOR TO LILLIAN A. LITTLE, OF LYNN, MASSACHUSETTS.

SOLE-LEVELING MACHINE.

Specification of Letters Patent.

Patented Nov. 17, 1914.

Application filed May 1, 1914. Serial No. 835,760.

To all whom it may concern Be it known that I, PHILIP A. BOWEN, a citizen of the United States, residing at Lynn, county of Essex, State of Massachusetts, have invented an Improvement in Sole-Leveling Machines, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to sole leveling machines and has for its object to provide a novel construction by which each edge of the sole will be helddown against the last while the opposite edge is being subjected to the rolling or leveling operation. In the operation of leveling the sole of a shoe, the shoe supported by its last is sustained by a suitable jack or shoe support, and then a presser roll is passed back and forth over the sole of the shoe under heavy pressure thereby to press the sole firmly against the last and shape the sole to the last. In performing this operation it is customary to pass the roll once or twice across the center of the sole and then to turn the presser roll and cause it to pass back and forth on each edge of the sole, the purpose of this being to bring the edges of the sole firmly against the last and make them conform thereto.

In practice it often happens that after one edge of the sole has been leveled or subjected to the action of the presser roll, and while the other edge is being acted upon by the roll, the first edge will peel up or separate somewhat from the last, especially at the shank of the shoe, this being due tothe fact that the bottom of the last is more or less rounded at the shank portion, and while the roll is acting on the last-named edge, there is nothing to hold the first edge down in its leveled position. This is the cause of more or less annoyance in the manufacture of shoes andinterferes somewhat with the operations of manufacturing the shoe. In order to avoid this difficulty, I have provided an attachment for sole-leveling machines by which both edges of the sole at the shank of the shoe are firmly held in position during the sole-leveling process, thus avoiding any possibility of either edge of the sole peeling up while the opposite edge is being rolled or leveled.

In order to give a proper understanding of my invention I have illustrated a selected embodiment thereof which will now be described after which the novel features will be pointed out in the appended claims.

Referring to the drawings wherein I have illustrated such selected embodiment of my invention, Figure l is a fragmentary perspective view showing a portion of a soleleveling machine having my improvements applied thereto; Fig. :2 is a sectional view of the means for applying pressure to the hold-down; Fig. 3 is a section on the line ;r'.'r, Fig. v

I have not deemed it necessary to illus-L trate herein a complete sole-leveling machine, but have only shown a sullicient portion of one to enable my invention to be readily understood.

In the drawings a shoe, the sole of which is to be leveled, is shown at 1 sustained on a last 2 which is supported on a suitable jack or stand 3, the toe of the shoe being sustained on a toe rest I, all as usual in soleleveling machines. This toe rest I and jack 3 are carried by a swinging frame 5 mounted on a shaft (3, the jack or support 3 being adjustabl v mounted on the frame for movement toward and from the toe rest 4 by means of an adjusting screw 7, all as usual in devices of this nature. The toe rest i is carried on a post 8 rising from the frame 5. i

9 designates the presser roll by which the sole 10 of the shoe is leveled. This presser roll is carried in a yoke 11, and suitable means, not shown herein, is provided for reciprocating the roll over the sole of the shoe thereby to perform the sole-leveling operation.

In sole-le eling machines of this type the frame 5 is mounted to turn about the shaft 6 so that said frame can be swung from the position shown in Fig. I, in which position the shoe is removed from the path of the presser roll 9, into a position where the shoe will be operated upon by theroll 9, and in the latter position the portion 12 of the frame 5 is brought into line with the hub 13 of the frame of the machine, said hub 13 having a locking bolt (not shown) slidably mounted therein which when thrown forward will engage in the recess 14 formed in the part 12 of the swinging frame 5, thus locking said frame in its operative position. In the operation of leveling the sole, the frame 5 is swung into the position shown in Fig. 1, and a shoe with'a sole thereon is applied to the jack, after which the frame is swung forwardly into the position where the shoe will be acted upon by the

roll

9, 5 and is locked in such position by the looking bolts above described, at which time the yoke 11 is given its reciprocating movement to cause the presser roll 9 to move back and forth over the sole 10 and shape the latter w to the last. v

i As stated above, it frequently happens that after the roll 9 has operated on one edge of the sole and is then operating on the other edge, the pressure of the roll against 5 said other edge will cause said first-named edge to peel up from the last, especially at the shank of the shoe, and to prevent this, I have provided a hold-down device which acts on the sole of the shoe at the shank thereof and which holds both edges of the sole firmly against the last during the soleleveling operation; My improvement is of such a character that it can be readily aplied to an ordinary sole-leveling machine. The hold-down device is shown at 15 and is in the form of a strap of leather, canvas, or other suitable material adapted to have engagement with the sole 10 at the shank of the shoe. The ends of this hold-down are connected to an actuating device by which pressure may be applied to the hold-down to maintain it in firm engagement with the sole of the shoe. This actuating device is herein shown as a two-armed lever 17 which is pivotally connected at its end to a stand or post 18 that in turn is secured to the frame 5, said post being herein shown ashaving the foot portion 19 which is bolted to the base of the frame 5. The lever 17 is herein illustrated as a two-armed lever, the

arms of which straddle or are located on opposite sides of the standard or jack 3, and

, each arm has adjustably mounted thereon a block 20 to which one end of the hold-down 15 is pivotally connected, as at 16. The blocks 20 can be adjusted longitudinally of the lever 17, thus providing for locating the hold-down in the right position to properly act on the sole of the shoe. These blocks may be carried by the arms of the lever 17 in any suitable way. As herein shown, each lever is provided with a slot 21, and each block is provided with a rib 22 to enter the slot, and with another rib 23' to engage the top of the lever, said blocks being held in engagement with the lever by clamping plates 24 which are located on the inside of the arms of the lever, and are screwed to the ribs 22. The pivotal connection between 3 the lever 17 and post 18 is preferably a yielding one, and as herein illustrated the arms of the lever are pivotally mounted on trunnions 26 carried by a spacing block 27 which fits between the arms, and said block has a bolt or screw 28 depending therefrom swing about the trunnions 26, but also provides a yielding connection between the lever and the post 18 for reasons which will be presently described. The outer end of the lever 17 is provided with a handle 32 by which it is actuated, and this handle has associated therewith a latch device which cooperates with a ratchet member 33 for looking the lever in its operative position. This ratchet member 33 is secured at its lower end to the frame 5 in any suitable way, extends up between the arms of the lever 17, and is provided with ratchet teeth The end of the lever 17 carries a pawl 35 which cooperates with the ratchet teeth 34:, and said pawl is actuated by a finger piece 36 which is connected at its lower end to an arm 37 pivoted at 38 to the handle 32 and extending through an opening 39 in the end of the pawl, 40 is a spring confined between the handle 32 and finger piece 36 and which tends normally to hold the pawl 35 yieldingly in engagement with the ratchet teeth 34. The ratchet member 33 is held in its operative position by a pin 41 carried by the arms of the lever 17.

In the operation of the device a shoe is applied to the jack 3 and toe rest 4 and the hold-down 15 is then swung up over the top of the sole and positioned on the shank thereof, as shown in Fig. 1, after which the operator presses downwardly on the lever 32 therebv bringing pressure on the holddown and pressing the latter firmly against the sole 10. During this operation the spring 30 may yield somewhat, and when the desired pressure has been secured the pawl 35 will maintain such pressure. The frame 5 is then swung forwardly into its operative position and then locked, and the presser roll 9' is carried back and forth across the sole thereby to level the latter in usualmanner. During the operation of the roll on either edge of the sole the hold-down serves to keep the opposite edge of the sole firmly pressed into position and prevents it from peeling up or springing away from the last as frequently happens where no holddown is used. After the sole has been properly leveled the pawl 35 is withdrawn from the ratchet teeth 31 and the lever 17 is raised sufiiciently to permit the hold-down being swung off from the shoe after which the shoe can be removed and another shoe placed in position.

The hold-down 15 not only operates to hold the edges of the sole in position and prevent them from peeling up from the last, but it also serves as a means for firmly holding the toe of the shoe against the toe rest 4:, thus obviating the necessityof the mechanism .usually employed for forcing the toe of the shoe down onto the toe rest and maintaining it there. Such mechanism is usually in the form of means for positively rocking the block at the upper end of the standard 3 and which sustains the last pin 51. In my device this means is not necessary and I propose to employ a spring 52 connected to the pivoted block 50 and which normally centers the block 50 with the last pin in a vertical position. This center position is one in which it is convenient to apply the last to the last pin or remove it therefrom.

It will be seen from the above that my invention is one which can be readily apembodiment of my invention I do not wish to be limited to the constructional features shown.

I claim:

1. In a sole-leveling machine, the combi-- nation with a shoe-supporting frame having a jack and a toe rest for supporting a shoe, of a post secured to the frame adjacent the toe rest, a lever having a yielding pivotal connection with the post, a hold-down strap connected to said lever and means to lock the lever in operative position.

2. In a sole-leveling machine, the combination with a shoe-supporting frame, of a lever having a yielding pivotal connection with said frame, a hold-down strap connected to the lever and adapted to embrace the sole of a shoe and means to lock the lever in operative position.

3. In a sole-leveling machine, the combination with a shoe-supporting frame of a lever having a yielding pivotal connection with said frame, a hold-down strap connected to said lever for adjustment longitudinally thereof and means to lock the lever in operative position.

4. In a sole-leveling machine, the combination with a shoesupporting frame having a jack and a toe rest, of a lever having a yielding pivotal connection with said frame adjacent the toe rest, a hold down strap and means adjustable longitudinally of the lever for connecting the hold-down strap thereto.

5. In a sole-leveling machine, the combination with a shoe-supporting frame, of a post secured to said frame, a lever having a yielding pivotal connection with sald post and a hold-down strap adjustably connected to said lever.

(1. In a sole-leveling machine, thecombination with a shoe supporting frame having a toe rest, of a post rising from said frame adjacent the toe rest, a two-armed lever having a yielding pivotal connection with said post and a hold-down strap adapted to embrace the sole of a shoe and having its ends connected to the arms of said lever.

7. In a sole-leveling machine, the combination with a shoe-supporting frame having a toe rest, of a post rising from said frame adjacent the toe rest, a two-armed lever having a yielding pivotal connection with said post, a hold-down strap adapted to embrace the sole of a shoe, and means for adjustably connecting the ends of said strap to the arms of the lever.

8. In a sole-leveling machine, the combi nation with a shoe-supporting frame having a toe rest, of a post rising from said frame adjacent the toe rest, a two-armed lever having a yielding pivotal connection with said post, a hold-down strap adapted to embrace the sole of a shoe, and means adjustable longitudinally of the arms of said lever to connect the hold-down strap thereto.

9. In a sole-leveling machine, the combination with a shoe-sup orting frame having a jack and a toe rest, 0 a lever having yielding pivotal connection with the frame adjacent the toe rest, a hold-down strap connected to said lever and means independent from the jack to lock the lever in adjusted position.

10. In a sole-leveling machine, the combination with a shoe-supporting frame having a jack and a toe rest, of a lever having yielding pivotal connection with the frame adjacent the toe rest, a hold-down strap connected to said lever, a ratchet bar pivotally secured to the frame in the rear of the jack and separate therefrom, and a pawl carried by said lever for engaging said ratchet arm.

11. In a sole-leveling machine, the combination with a shoesupporting frame of a block yieldingly connected to the frame, a lever pivoted to the block and a hold-down strap connected to the lever.

12. In a sole-leveling machine, the combination with a shoe-supporting frame having a post rising therefrom, a block yieldingly connected to the post, a two-armed lever. pivotally connected to the block and a holddown strap connected to the arms of said lever.

13. In a sole-leveling machine, the combination with a shoe-supporting frame, of a post secured thereto, a blockyieldingly connected to the post, a two-arm lever pivoted to the block, a hold-down strap adapted to embrace the sole of a shoe and connections between said strap and lever which are adj ustable longitudinally of the lever.

14. In a sole-leveling machine, the combination with a shoe-supporting frame of a hollow post secured thereto, a block above the post having a bolt extending therefrom into said post, a spring within the post acting on the bolt, a lever pivoted to the block and a hold-down strap connected to the lever.

15. In a sole-leveling machine, the combination with a shoe-supporting frame, of a lever having a yielding pivotal connection therewith, a hold-down strap connected to said lever, a ratchet bar pivotally connected to the frame, and a pawl carried by the lever 10 for engaging the ratchet bar, said lever having guiding mt ms to maintain the ratchet bar in operatiw e1. :nent with the awi.

In testimon whereof, I have signe my name to this specification, in the presence of two subscribing witnesses.

PHILIP A; BOWEN.

Witnesses:

LOUIS C. SMITH, THOMAS J DRUMMOND.