US2298227A - Resoling and reheeling mold for footwear - Google Patents

Description

Oct. 6, A1942. .1. w. Pl-NKERTON ET AL 2,298,227'

RESOLING AND REHEELINGMOLD FOR FOOTWEAR Filed oci. 28, 1940 2 sheets-sheet 1 Ely. 1 j

BY Henry JCnech t ATTORNEYS Oct. 6, 1942. .,1. w. PINKERTON ETL 2,298,227

RESOLING AND REHEELING MOLD FOR FOOTWEAR Filed Oct. 28, 1940 2Sheets-Sheet 2 VENTORs J.' LU. 'nicer-Zon BY .Henry Knecht ATTORNEYS Patented Oct. 6, 1942 UNITED lSTATE i FOOTWEAR n I James W. Pinkerton, Lodi, and Henry knecht,

Acampo, Calif lApplication octoberA 2s, 19'40, seriarNo. 363,132 A (ci. 18-34) a 4 Claims.

This invention relates to the shoe repair industry, and particularly to the application of rubber soles and heels to heavy duty rubber boots such as' those worn by miners and the like, after theoriginal soles and heels have been Worn down.

'I'he principal object of our invention is to prof' videa mold by means of which the replacement sole and heel may be applied to a bootV at one operation, and in the proper location relative to each other, while at the same time 'maintaining the new sole and heel rubber initially separate so that such rubber ,is only applied where wear has occurred, and thus none is wasted, nor is the 4 boot built up to an excessive thickness along the arch where no appreciable wear takes place.

A further objectis to provide a mold, and certain necessary accessories, so constructed and arranged that a resoling operation may be quickly and easily carried out, and so thatthe finished job will be neat in appearance, besides giving excellent service.

A further object of the invention is to produce a. simple and inexpensive device and yet one which will be exceedingly effective for the purpose for which it i's designed.

These objects we accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views:

Figure 1 is a plan view'of the mold.

Figure 2 is a similar view of the separable sole and heel pressure plates, assembled with each other.

Figure 3 is a sectional elevation of the mold on line 3-3 of Fig. 1 shown as in operation on a boot and with the pressure plates clamped in position.

Figure 4 is an elevation of the main clamp frame and screw, shown as attached to the mold.

Figure 5 is a plan view of the frame.

Figure 6 is an elevation of an auxiliary toe clamp.

Referring now more particularly to the characters of reference on the drawings, they mold comprises a rigid body unit preferably of aluminum and consisting of separate sole and heel members I and Ia, flat and on a common level on the bottom. The member I has a tongue 2 slidably projecting into a socket 2a in the member la and held in any position by a set screw 3, so that the members may be adjusted lengthwise of each other while being maintained as a rigid member I is a recess 4 shaped to conform to the contour of the sole S of a rubber boot B, but slightly smaller in size, so that said sole may be supported on the mold all about said recess. The recess', which then'forms an enclosed yreceptacle for the reception of a sole blank ornew sole rub- Yber 45, is provided with ribs 4a forming a nonskid and we believe novel design. s

The top surface of member I, and the recess therein, are concavely curved as shown, to correspondsubstantially to the natural or acquired curvature of the sole, so that the uppersof the boot need not be distorted in orderto obtain proper vulcanizing contact of the sole with the n ew rubber.

Depressed in -the upper face of the member Ia is a heel recess 6, also conforming' in shape to and adapted vto receive said heel therein. The sidesl of recess f6 are higher than those ofrecess 4, so that the heel projects between said sides, and theboot as a whole is properly located on the'mold.' The recess 6 also forms a reception for aheel blank or fora supply `of rubber 'I for anewheel.-

It will of course be understood that the sole and heel recessesare positioned to correspond to the positions of'the sole and heel on a boot of A a. certain size,j`and it willalso be realized that unit. Depressed in the upper face of the body right and 'left hand moldsare vneeded `for any pair of boots, and that different sets ofmolds are necessary for boots lof different sizes except for slight differences in the distance between the sole and'heel, which are taken ca're of by adjust-v ing member la relative to member I Since the l sole and heel receptacles in a mold are separated from each other and are positioned to correspond to the positioning of the sole and heel on a boot to be repaired, it will be seen that a resoling and reheeling job can be performed at one operation Without any possibility of misepositioning, and without any slow try-and-ft procedures being necessary to assure a neat job. Also, no rubber willbe applied between the sole and heel where it is not needed.

The mold, being of a material having high heat conductivity, may be used in connection with an ordinary steam vulcanizing plate, or it may be provided with a built-in heating means such as 'an electric resistance element.

After the original sole and heel material has by means of sole and heel pressure plates 8 andl respectively, which are adapted to be placed inside the boot.

The plates are separate from each other, but are maintained in alinement lengthwise of the boot by a cooperating tongue and groove arrangement IU at their adjacent ends, which enables the plates to shift relative to each other vertically of the boot, as the difference in level between the sole and heel inside the boot may require, but not transversely of the boot.

A rigid arch bar Il is then placed in the boot to engage both plates, the bar at its forward end having a depending dowel i2 for locating engagement in a socket I3 in the sole plate i.

An inverted U-clamp frame I4 then straddles the boot from above, the frame having laterally inturned feet I5 to engage under the mold on opposite sides as shown in. Fig. 4. A clamping screw It for engagement -with the bar Ii cen- A trally of its length is mounted in connection with the frame by means of a nut Il threaded on the screw and removably seated in a socket il formed in the head I ila of the frame and open to one side and the bottom of said head, which above the socket is slotted on the same side as at i9 to receive the screw.

By reason of this construction it will be seen that the screw, which goes into the boot from the iop, may be` easily placed or removed from position after the frame is in place, without the 'necessity of the screw being advanced or'retracted all the way to clear the boot.

With very heavy boots, or whentheir soles are cushion lined, it is sometimes impossible to obtain sufficient pressure on the sole near the toe with the above described clamping device. In such cases, and when the boots are provided with rigid steel caps, I provide an auxiliary clamp. This comprises a relatively short inverted U-clamp frame 20 having a clamping screw 2| mounted therein to engage the boot cap and press the same down so that the adjacent portion of the sole' is also pressed down. The sides of this frame at the.bottom are horizontally slotted to engage pins 22 projecting from the sides of the mold near the front.

It may here be noted that while the improved mold has been particularly designed for use with heavy duty rubber boots, it is not of course limited to such use, and leather shoes, for instance, may be-provided with rubber soles.`

From the foregoing description it will be readily seen that we have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the presentv and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as deilned by the.appended claims.

Having thus described our invention, what we claim as new and useful and desire to secure by Letters `Patent is:

1. A resoling and reheeling mold for a boot comprising a rigid mold body adapted to be subjected to a vulcanizing heat and to provide a support for the bottom of the boot, means forming receptacles depressed in the upper surface of the mold for the reception-of new sole and heel rubber, separate pressureplates placeable inside the boot on the sole and heel portions thereof, a rigid arch bar in the boot engaging both plates intermediate their ends, and means to press down on said bar including a screw engaging the bar intermediate its ends and extending upwardly to the top ofthe boot.

2. In a boot resoling mold to support the bottom of a boot and having a pressure plate unit placeable inside the boot, a clamping device for said unit including an inverted U-frame adapted to be connected to the mold in straddling rela- Y tion to the mold and boot, and to extend to the top of the latter, a screw depending fromy the frame and adapted to extend into the boot to engage the unit and a nut threaded on the screw; the U-frame at the top having a socket open to one side to receive the nut and being also open on said side above the socket to receive the screw. A

3.a resoling and -Ireheeling mold comprising initially separate mold members, one member having an open-topped recess for sole rubber and the other member having an open-topped recess for heel rubber, and a sliding tongue and socket connection between the members to enable them to be adjusted lengthwise of each other and held against relative movement at any position of adjustment.

4. A resoling and reheeling mold comprising initially separate mold members, one member having an open-topped recess for sole rubber JAMES W. PINKER'ION. HENRY KNECHT.

Images