US1719158A - Shoe-leveling machine - Google Patents

Description

July 2, 1929. I E. E. WINKLEY E L SHOE LEVELING MACHINE Filed Feb. 28, 1925 2 Sheets-Sheet l y 2, 1929- I. E. E. WlNKLEY E AL 1,719,158

SHOE LEVELING MACHINE Filed Feb. 28, 1925 2 Sheets-Sheet 2 Patented July 2, 1929.

UNITED STATES PATENT OFFICE.

ERASTUS E. WINKLEY, OF LYNN, AND HERMAN A.'DAVENPORT, 0F BROCKTON, MASSA- CHUSETTS, ASSIGNORS TO UNITED SHOE MACHINERY CORFORATION, OF PATER- SON, NEW JERSEY, A CORPORATION OF NEW JERSEY. I

SHOE-LEVELING MACHINE.

Application filed February This invention relates to shoe leveling machines and is illustrated as embodied in an automatic sole leveling machine of the type set forth in United States Letters Patent No. 1,239,664, granted Sept. 11, 1917, on application of IV. C. Baxter.

In machines of this type leveled is placed on a jack which is oscillated by a power mechanism under a spring pressed roll, which shapes the bottom of the shoe as it progresses along it. In such machines the shoe is mounted on a jack pin which enters a hole in the heel of its last, and its toe is placed on a toe pad mounted on a toe post. The shoe is then commonly jacked by tilting the jack pin toward the toe pad by a gear mechanism operated by a heavy wrench to force the toe firmly into the toe pad, as shown, for example, in United States Letters Patent No. 1,171,383, granted Feb. 8, 1916, on application of IV. C. Baxter.

Such machines have alsolbeen provided with a so-called leather saddle which is pulled down over the bottom and both sides of the shoe by a ratchet-locked hand lever and used in connection withthe leveling roll for the purpose of securing better leveling, for example, on shoes with highly rounded shanks, set forth in United States Letters Patent No. 1,263,361, granted April 23,1918, on application of W. C. Baxter. It has been found that the saddle itself constitutes a satisfactory jacking means, adapted for use al ternatively with the jack pin tilting mechanism.

Both of these jacking mechanisms have been widely used. The ack pin tilting mechanism is somewhat quicker in its'operatio'n and is quite satisfactory as a jacking means i on any work, but the saddle has been found to be highly advantageous, if not indispensable, for the best leveling of some classes of work. lVhen the saddle is used it is natural to rely upon it for jacking the shoe so that in that case the jack pintilting mechanism is usually not used.

In view-of these considerations, it is an obj ectof the present invention to provide an improved machine having a plurality of jacking mechanisms of the types referred to and having m. this and in other respects all the the shoe being 28, 1925. Serial No. 12,287.

advantages of former machines provided with acking mechanisms of these types, Which shall be cheaper to build and simpler and easier to operate in that it will avoid the necessity of operating the respective acking means by two different mechanisms, thereby permitting greater concentration and uniformity of habit on the part of the a number of expensive parts riequiredfor the former jack pin operating mechanism maybe dispensed With by the use of a few simple and cheap machine parts, such as links and levers.

A second feature of the invention relates to the connection of the single operating means to the two jacking mechanisms. The movement of the operating lever necessary to pull down the saddle is considerably greater than is possible in setting the jack pin. To

provide for this, in accordance with this feature of the invention in the disclosed machine, a lost-motion connection is provided between the lever and the jack pin to permit freemovement inuoperating the saddle, and provision is made for taking up this connection when the shoe is to be jacked by tilting the pin to force the shoe into the toe pad.

Thus, in the illustrated construction, the lost motion provided by the lost-motion connection referred to'is utilized to disconnect the jack pin tilting mechanism when it is desired to use thesaddle in jacking the shoe.

' In this aspect, therefore, the invention provides a common controlling means for two jacking instrumentalities permanently connected to one of them,-as shown, the saddle; and operatively 'connectible at will to the other, that is, in the illustrated construction, the jack pin; by a construction which, without attention. on the partof the operator, ren

ders the first jacking instrumentality ineffective whenever the last-named instrumentality is operatively connected.

Another feature relates to the relative leverages of the common operating means operating the two jacking instrumentalitie s. It will be shown that these correspond approximately to the forces necessary in the instrumentalities at the points where the jacking work is done, so that the operator is enabled to operate either jacking means by the exercise of approximately the same force.

In accordance with a further feature of the invention, the jack pin tilting mechanism, considered entirely independently of the saddle mechanism, has been signally improved and simplified by the provision of a lever arranged to operate it. The disadvantages inherentinthe use'of a detachable wrench are thus avoided, and adequate leverage is provided by the disclosed construction and insures proper jacking of the shoe.

These and-other features of the invention comprising certain combinations and arrangements of parts will be understood from the following description. of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings in which,

F ig. 1 is a side elevation of the front parts of a machine of the type referred to;

Fig. 2 is an enlarged side elevation of the jack mechanism;

Fig. 3 is a perspective of the jack mechanism;

Fig. 4 is a detail of the operating means as arranged to operate the saddle; and

Figs. 5 and 6 are similar details of the operating means as arranged to operate the jack pin.

Except as herein pointed out in detail, the

-Inachine shown is similar to that shown in ack, is oscillated in a definite can'r-controlled cycle by power mechanism under a heavily spring-pressed leveling roll 10, and is automatically thrown out of operative position and stopped when the cycle is completed.

' The ack is mounted on a rock-shaft 12 operated by power mechanism and comprises a toe post 14 mounted on the shaft and a heel post 16 pivoted at 18 to an arm 20 on the shaft 12. The heel and toe posts are adjusted toward and from each other to fit the shoe by v a hand screw 22, all as described in the Letters Patent referred to.

The jack pin 24 is mounted on a block 25 (Fig. 2) pivoted at 26 to the top of the heel post. The block can be rotated to tilt the jack pin by a link 28 pivoted at 29 to an arm on the block and extending down behind the heel post.

The illustrated machine is also provided with a saddle adaptedfor use in jacking a shoe alternatively with the jack pin tilting mechanism just referred to. This saddle 38 which is constructed and operates substan tially as set forth in Letters Patent No. 1,263,361, above referred to, is connected to the two arms of a bifurcated lever 30 by a strong spring 40 on each side, and when the saddle is to be used, the lever 30, the arms of which are pivoted at 32 to blocks mounted in slots 34 on. the toe post, pulls it down tightly over a shoe and is then locked to a segment 36 on the heel post. The slots 34 are formed as circular arcs about the center at 18 to permit relative movement of the toe and heel posts about the center 18 without disturbance of the relation between the lever and the heel post, as explained in the patent referred to.

The relation of the lever to the jack pin tilting mechanism will now he described. Pivoted to the bottom of the heel post there is a link 42, pivoted at its upper end to lever 44, one on each side of the heel post. These levers extend toward the rear of the machine and are pivoted at their rear ends to short links 46, which are pivotally connected with the rear portions of the fork of the lever 30.

The two levers 44 are connected by a hori- Zontal pin 48 which passes through a longitudinal slot 50 in the link 28 (see Figs. 4, 5 and 6). A U-shaped latch 52 is pivoted to the lower end of the link 28, and its arms 54 can be swung up between the link 28 and the levers 44, as shown in Figs. 5 and 6, or down, as shown in Fig. 4. When in the latter position the pin 48 has free movement in the slot 50 as the lever 30 moves the levers 44 idly up and down in operating the saddle 38. But when the latch is in the position shown in Figs. 5 and 6, its arms 54 serve as an abutment for the pin 48, on its downward movement, and it then pulls on the link 28 to 0perate the jack pin. The latch is held in this position by a little spring-pressed pin 56 which engages a hole 58 in the latch when it is up in the Fig. 5, 6 position.

It is not necessary to remove the saddle when not in use. The range of movement of the lever in operating the jack pin is so small that the saddle is not affected by it. At such times the saddle is ordinarily pulled back over the heel post and draped over the lever 30.

e have thus provided a single operating means for the saddle and the j ack pin, which can be used in connection with one or the other at will.

It is clear that, with the proportions shown, as the lever 30 is moved, the links 46 will move at about 2/3 the velocity of the lower ends of the springs 40, and that the pin 48 will move only about half as fast as the links 46. The mechanical advantage of the connection of the lever to the jack pin is, for this and other reasons which will shortly appear, considerably greater than that of its connection to the saddle. This is doubly convenient in the machine, since, in the first place, the jack pin cannot move farin setting the shoe into the toe rest on the'toe post, andtherefore the distance traveled by the lever 30' must be great in comparison in order to accumulate the necessary jack pin pressure under manual operation; and secondly, the force required on the saddle to hold the shoe equally securely jacked is considerably less than that required in the link 28 and this condition corresponds to the mechanical construction.

This may be seen as follows Suppose that the saddle engages the shoe at a point 1/3 the distance from the heel to the toe, and that the pressure between the shoe toe and the toe padon the toe post is 100 pounds. The pressure on the jack pin will then be 200 pounds and the tension in the springs will be 300 pounds. The distance from the pivot 32 to the springs 40 is about 1/ 5 the length of the lever 30. The operator'will therefore have to press 60 pounds to throw down the lever.

Secondly, assuming the shoe to be jacked with the jack pin, we see that the distance 26-29 is about 1/7 the distance from the pivot 26 to the toe pad. The toe pad reaction being 100 pounds, as before, the tension in the link 28 will be 700 pounds, and that in the link 46 will be about 350 pounds. The link 1-6 is attached to the lever 30 at a point 1/7 of its length from the end,so that the operator can effect the desired SlZIGSS'OIl the link 28 by a pressure of pounds'on the lever 30.

The operator can thus operate the lever30 by applying forces of the same order of magnitude for both jacking devices, and can thus form one habit to take care of the operation of both devices. 7

The resilient springs 40 are of considerable importance in this connection, since it would be diflicult to arrange a positive connection from the lever 30 to both the saddle and jack pin which would have just the right range of movement for each under the changing conditions of work. The springs 40 take up any such discrepancy between the operative positions of the lever 30 under changing conditions.

The saving in time and in wear and tear on the operators nerves should be strongly emphasized. The present invention avoids any waste of time due to the necessity of finding and applying the wrench which has heretofore been used for tilting the jack pin. Indeed, entirely apart from the double func tion of the lever 30, its application to the operation of the jack pin considered alone secures signal advantages, and constitutes a distinct improvement over prior machines.

Having thus described our invention, what we claim as new and desire toseeure by- Letters Patent of the United States is 2- 1. In a shoe leveling machine, leveling means, a last support, means for relatively moving the leveling means and last support, a jack pin and a saddle mounted on the last support and operable to hold a shoe thereon under the pressure of the leveling means, and a single operating means constructed and arranged to operate either the jack pin or saddle at will.

2. In a shoe leveling machine, a leveling roll, a last support, power operated means for relatively oscillating the leveling roll and last support, a jack pin and a saddle mounted on the last support and operable to holda shoe thereon under the pressure of the leveling roll, and a single operating means constructed and arranged to operate either the jack pin or saddle at will.

3. In a shoe leveling machine, a leveling means, a last support, power operated means for relatively moving the leveling means and last support, a jack pin and a saddle mounted on the last support and operable to hold a shoe thereon under the pressure of the leveling means, and a single lever constructed and arranged to operate either the jack pin or saddleat will.

4. In a shoe leveling machine, a leveling means, a ack, mechanism for relatively moving the leveling means and jack, a jack pin on the jack and a saddle both operable to holda shoe on the jack, and a lever connected with one of said holding instrumentalities and connectible at will with. the other to operate the ack pin or saddle.

5. In a shoe leveling machine, a leveling 'means, a last support, mechanism for relatively moving the leveling means and last 7 support, a jack pin and a saddle on the last support both operable to hold a shoe on the last support, a lever connected with one oi said holding instrumentalities and having a lost motion connection with the other, and means for transforming said lost motion connection to an operable one.

6. 111a shoe leveling machine, a leveling means, a jack, mechanism for relatively moving the leveling means and ack, a jack pin on the jack and a saddle both operable to hold a shoe on the ack, alever connected with one of said holding instrumentalities and having a pin and slot-connection with the other, and means for shortening the slot to make the connection positive.

7. In a shoe leveling machine, a leveling means, a lastsupport, poweroperated mechanism for relatively moving the leveling means and last'support, a jack pin and a saddle on the last support both operable to holda shoe on the last support, a lever connected with one of said holding instrumentalities and having a pin and slot connection with the other, and a pivoted member which can be swung to block part oi. the slot to render the pin and slot connection positive.

8. In a shoe leveling machine, a leveling roll and a power operated jack arranged to oscillate a shoe on the jack under the roll, a pivoted ack pin on the jack constructed and arranged to be moved about its pivot to bind firmly on the jack a shoe placed thereon, a slotted link for moving the jack pin, a pin in the slot, a saddle arranged to hold a shoe on the jack, and a lever connected with the saddle and with the pin in the slot to operate the jack pin and saddle.

9. In a shoe leveling machine, a leveling roll and a power operated jack arranged to oscillate a shoe on the ack under the roll, a pivoted jack pin on the jack constructed and arranged to hold firmly on the jack a shoe placed thereon when turned on its pivot, a slotted link for turning the jack pin, a pin in the slot, a saddle arranged to hold a shoe on the jack, a lever connected with the saddle and With the pin in the slot to operate the jack pin or saddle, and a member movable to cover part of the slot to restrict the movement of the pin therein.

10. In a shoe leveling machine, a leveling means, a last support, mechanism for relatively moving the leveling means and last support, a jack pin and a saddle on the last support both operable to hold a shoe on the last support, and a unitary operating means constructed and arranged to cooperate interchangeably with the jack pin or saddle at will to fasten a shoe on the last support.

11.In a shoe leveling machine, a leveling means, a ack, power operated mechanism for relatively moving the leveling means and jack, a jack pin on the jack and a saddle both 0 erable to hold a shoe on the jack, and a single hand lever constructed and arranged to cooperate interchangeably with the jack pin or saddle at will to fasten a shoe on the jack.

12. In a shoe leveling machine, a leveling means, a jack, mechanism for relatively moving the leveling means and ack, a jack pin and a saddle on the jack both operable to hold a shoe on the jack, and a single hand lever constructed and arranged to operate interchangeably either the jack pin or the sad dle at will to fasten a shoe on the jack, the connection of the hand lever to the jack pin having the greater leverage.

13. In a shoe leveling machine, a leveling means, a ack, power operated mechanism for relatively movingthe leveling means and jack, a jack pin and a saddle on the jack both operable to hold a shoe on the jack, and a single hand lever constructed and arranged to operate interchangeably either the jack pin or the saddle at will to fasten a shoe on the jack, the connections of the hand lever to the jack pin and saddle being constructed and arranged to apply equivalent operative forces to the shoe under substantially equivalent stresses applied by the operator to the lever.

14. In a shoe leveling machine, a leveling means, a last support, mechanism for relatively moving the leveling means and last support, a jack pin and a saddle on the last support both operable to hold a shoe on the last support, and a lever capable of a positive connection to one of said shoe holding instrumentalities and having a resilient connection with the other to operate either at will.

15; In a shoe leveling machine, a leveling means, a jack, power operated mechanism for relatively moving the leveling means and jack, a jack pin and a saddle on the ack both operable to hold a shoe on the jack, and a lever having a positive operative connection to one of said shoe holding instrumentalities and having a resilient connection with the other to operate either at will.

16. In a shoeleveling machine, aleveling instrumentality, a last support comprising a heel. post and. a toe post arranged to maintain a fixed relation toeach other in the operation of jacking a shoe thereon, means for relatively moving the leveling instrumentality and the last support, a jack pin on the heel post operable by movement about an axis adjacent to a shoe thereon to bind a shoe on the last support, and a lever and a mechanism for multiplying its advantage constructed and arranged. to operate the jack pin. 17. In a shoe leveling machine, a leveling instrumentality, a jack comprising a heel post and a toe post arranged to maintain a fixed relation to each other inthe operation of jacking a shoe thereon, means for relatively moving the leveling instrumentality and the ack, a ack pin on the heel-post operable by movement about an axis adjacent to a shoe thereon to bind a shoe on the jack, and a hand lever movable heightwise of the shoe to operate the jack pin to bind a shoe on the ack.

18. In a shoe leveling machine, a leveling instrumentality, a jack, means for relatively moving the leveling instrumentality and the jack, a ack pin pivoted on the ack for turning movement to bind a shoe on the jack, an arm extending laterally from the jack pin, and a hand lever movable heightwise of the shoe and connected to the arm to'turn the pin into operative position.

19. In a shoe leveling machine, a leveling instrumentality, a jack, means for relatively moving the leveling instrumentality and the jack, said jack comprising a heel post and a toe post, a jack pin pivoted on the heel post and arranged to turn toward the toe post to bind a shoe on thejack pin against the toe post, an arm extending laterally from the j ack 7 pin, ahand lever pivoted at one end, and a link connecting the hand lever between its ends to the arm for operating the arm to turn the jack pin.

20. In a shoe leveling machine, a leveling instrnmentality, a jack, power means for relatively moving the leveling instrnmentality and the jack, said jack comprising a heel post and a toe post, a jack pin pivoted on the heel post and arranged to turn toward the toe post to bind a shoe on the jack pin against the toe post, an arm extending laterally from the jack pin, a hand lever pivoted on the toe post and lockable on the heel post, and a link connecting the hand lever and the arm and extending down the heel post.

21. A shoe leveling machine having, in combination, leveling means, a jack for supporting a last having a shoe thereon to present the bottom of the shoe to the action of the leveling means comprising a rest for the fore part of the last and a jack pin for supporting the heel end of the last, means for operating the jack pin to position and hold a last and shoe on the jack, a saddle, means for operating the saddle to position and hold a last and shoe on the jack, a single controlling means constructed and arranged to render either the jack pin or saddle operative at will, and means for relatively moving the leveling means and the jack to level the shoe sole.

22. A shoe leveling machine having, in combination, leveling means, a jack for supporting a last having a shoe thereon to present the bottom of the shoe to the action of the leveling means comprising a rest for the forepart of the last and a jack pin for supporting the heel end of the last, means for operating the jack pin to position and hold a last and shoe on the jack, a saddle, means for operating the saddle to position and hold a last and shoe on the jack, a single controlling means connected with one of said positioning and holding means and connectible to the other at will, and power means for relatively moving the leveling means and the ack to level the shoe sole.

23. A shoe leveling machine having, in combination, leveling means, a jack for supporting a last having a shoe thereon to pre sent the bottom of the shoe to the action of the leveling means, a plurality of jacking instrumentalities each operable to position and hold a last and shoe on the jack, and a single controlling means constructed and arranged to render either of said instrumentalities operative at will.

24. A shoe leveling machine having, in combination, leveling means, a jack for supporting a last having a shoe thereon to present the bottom of the shoe to the action of the leveling means, a plurality of jacking instrumentalities each operable alternatively to position and hold a last and shoe on the ack, and a single controlling means comprising a hand lever constructed and arranged to render either of said instrumentalities operative at will.

25. A shoe leveling machine having, in combination, leveling means, a jack for sup porting a last having a shoe thereon to pre sent the bottom of the shoe to the action of the leveling means comprising a rest for the forepart of the last and a jack pin for supporting the heel end of the last, means for operating the aok pin to position and hold a last and shoe on the ack, a saddle, means for operating the saddle to position and hold a last and shoe on the jack, and a single controlling means connected with one of said instrumentalities and connectible to the other at will.

26. A shoe leveling machine having, in combination, leveling means, a jack for supporting a last having a shoe thereon to present the bottom of the shoe to the action of the leveling means, a plurality of jacking instrumentalities each operable to position and hold a last and shoe on the jack, and a single controlling means permanently connected to one said instrumentality and operable at will to render the second said instrumentality operative and at the same time to render the first said instrumentality inefl'ective.

In testimony whereof I, the said ERAs'rUs E. WVINKLEY, have signed my name to this specification.

ERASTUS E. VVINKLEY.

In testimony whereof I, the said HERMAN A. DAVENPORT, have signed my name to this specification.

HERMAN A. DAVENPORT.

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