US2036289A - Shoe cementing machine - Google Patents

Description

pr'll 79 193@ w L, MaCKENzxE SHOE CEMENTING MACHINE Filed March 20, 1955 Patented Apr. 7, 1936 UNITED STATES PATENT OFFICE SHOE CEMENTING MACHINE Application March 20, 1933, Serial No. 661,720

11 Claims.

This invention relates to machines for applying cement to shoe parts and is illustrated as embodied in a machine for coating the attaching face of the welt of a welt shoe which is to have a cement-attached sole, it being of the general type of that'shown in an application Serial No. 574,833, led November 13, 1931, in my name.

In shoes in which the soles are permanently attached by means of cement, it is customary to apply'pyroxylin cement to the shoe bottom, preferably in a stripe extending around the margin of the shoe. One type of such shoes is made in the manner customary in the manufacture of welt shoes up to the point of attaching the sole. In order that the soles may be attached by means of cement, a band of cement is applied to the bottom of the shoe, including the attaching face of the welt, the edge of the inseam and the adjacent surface of the insole, preferably by means of a soft rubber applying roll, which is substituted for the roll illustrated in the above-entitled application, and which will conform to the irregular surface to be coated. For satisfactory results it is desired to position the edge of the welt in registration with the margin of the applying roll and to hold the work and especially the welt firmly in contact with the applying roll. It is frequently also desired to apply cement to the mid part of the shank portion of the bottom of a shoe of this type, this including the exposed surface of a shank piece, if there is one, in order to provide ample strength in the adhesion of the sole and to assistv in holding the shank pieces in position.

An object of the invention is to provide an improved bottom cementing machine which will be equally useful for coating the mid part of the shank portions and for applying a stripe of coating material around the margin of the shoe bottom, to the attaching surface of the welt and to the adjacent inseam.

' To this end a feature of the invention resides in a cement-applying machine having a workengaging member which is mounted for movement from an inoperative position outwardly toward a lateral face of the applying member to a gaging position and is also movable in another direction toward the applying member, thereby to hold the work in contact with the applying member. The work-engaging member of the illustrated machine is normally held in retracted position out of the way of work presented to the applying roll. As shown also, this member is slidably mounted in a movable bracket, and operator-controlled means is provided for extending it into engagement with the work and for then moving the bracket to lift the work into contact with the applying member. When the gage is moved into the welt crease of the shoe, it serves to gage the position of the work laterally with respect to the applying member, and when it is lifted it presses the work into contact with the applying member. As illustrated also, adjustable devices are provided for limiting movement of the gage laterally thereby to determine the gaging position and movement of the gage upwardly thereby to avoid soiling the gage by contact with the applying member if no work is present. The device which limits upward movement of the gage also enables the operator to predetermine the pressure applied to the welt, thereby to get equal pressure for different thicknesses of welt.

These and other features of the invention are described in the following specification taken in connection with the accompanying drawing, in which Fig. 1 is an angular view of a machine embodying my invention;

Fig. 2 is an enlarged view, partly in section, showing the gage holding a piece of work in operative relation to the applying roll; and

Fig. 3 is an enlarged end view of the gage finger.

While my invention is not limited to use with any particular type of cement-applying mechanism, it is herein shown as embodied in a machine having a soft rubberapplying roll 4 which projects below an inclined head having adjustable Scrapers and which receives cement from a receptacle 6 mounted on the inclined head. The roll 4 is rotatable with a shaft (not shown) passing through a bearing 8 in the frame, this frame being provided with a depending, vertical flange 9. A combined gage and supporting finger l0 formed at one end of a bar l2 is slidably mounted between the ange 9 and a recessed bracket I4 pivotally mounted upon a fulcrum screw I6. The gage-supporting bracket has a depending lug I8 to limit tilting movement thereof in a direction to carry the gage away from the applying roll. A rearwardly extending lug 2! upon the bracket loosely surrounds a treadle rod 22. This treadle rod also passes through the lower arm of a bell-crank lever 24 pivoted at 26 on the frame, and the upper end of the upright arm of the bell-crank lever has an inclined face 28 bearing against a rounded inner end 30 of the gage bar I2. The movement of the treadle rod is transferred to the bell crank through a spring 32 interposed between the lower arm of the bell crank and a collar Sil secured to the treadle rod. The gage bar I2 is normally held in retracted position, as shown in Fig. l, by a spring 36 so that the ringer l is out of the way of work presented to the applying roll 4 in a position to coat the midpart of the shank portion. Outward movement of the gage bar is limited by contact of a shoulder 33 thereon with the back side of the head of a screw Il@ adjustably locked in the bracket lfl, thereby to determine the gaging position. The treadle rod 22 is shouldered and provided with a washer d2 held against its shoulder by a spring Mi adjustably tensioned by a nut Upon continued downward movement of the rod the washer 42 will contact with the lug 26 and tilt the bracket I4 to raise the finger IE), thereby to lift the work into contact with the applying roll.

Tilting movement of the bracket I4 to carry the work-supporting gage lll toward the applying roll is limited by a stop screw 5@ threaded in the lug depending from the bracket l and held in adjusted position by a lock nut 52. This screw 5! is positioned to contact with the lower edge of the flange 9, indicated by the dotted line 54, and is adjusted so that the finger le cannot contact with the applying member when it is accidentally lifted Without a shoe in position thereon. This screw 5E] also enables the operator to regulate the machine for thick welts or thin welts so that the maximum pressure applied will be the same for both.

The upper surface of the flattened end Si] of the combined gage and welt support l0 is slightly rounded, as indicated at G2 in Fig. 3, in order that it may not bridge the sharply curved, concave surface of the welt, such as may be found at the ball line, but will give adequate support for both such curved surfaces and the atter surfaces found on other portions of the welt. The end 69 is also inclined into approximate parallelism with the scraper-carrying head surrounding the applying roll.

In the use of the machine, the operator will operate a treadle (not shown) to depress the treadle rod 22, which will rst swing the bell crank 2A to extend the gage l0 to its limit of outward movement as determined by the screw 4B. Continued movement of the treadle rod will cause the Washer 42 to engage the extension 25J of the bracket |65, thereby to lift the gage i3 toward the applying roll. The operative position of the work when positioned and supported by the gage iii is indicated in Fig. 2, where the end of the gage is shown seated in the welt crease and in engagement with the then under face of a welt lil@ attached to a shoe 52. The shoe comprises a. channeled insole liil and it is desired to coat the edges of the channel lips, the lining and the upper, herein collectively termed the inseam 68, as well as to coat the attaching face of the welt |00 in preparation for the soleattaching operation. Some cement may also be applied to the channeled portion of the insole, or to the bottom filler, if there is any. In using the machine, the operator will extend the gage and present a shoe to the gage, causing the latter to enter the welt crease of the shoe. He will then, by continued depression of the treadle, lift the gage to carry the Work into contact with the applying roll in the position shown in Fig. 2. This position will be determined by adjustment of the screws 40 and Eil rst to bring the edge of the Welt in registration with the edge of the applying roll, and second to exert an effective pressure upon the work as it is brought into contact with the applying roll without permitting suiiicient pressure to injure the applying roll. The screw 5S will usually be adjusted so that the gage cannot be brought into actual contact with the applying roll when no work is present. If it is desired to apply cement to the center of the shank portion of the bottom of the shoe, the gage is left in retracted position where it is out of the Way of the work so that the latter may be presented without interference to the applying roll 4.

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

l. In a shoe cementing machine, a frame, an applying member rotatable thereon, a work supporting gage movably supported on said frame,

and means for moving said gage rst substantially longitudinally of the axis of the applying member and then radially toward the applying member.

2. In a shoe cementing machine, an applying member, a movably mounted gage, means for moving said gage to inoperative position, and a mechanism capable of movement by the operator to move said gage in a plurality of directions to bring it into operative relation to the applying member.

3. In a shoe cementing machine, a rotatable applying member, a movably mounted gage, resilient means for moving said gage to inoperative position, operator-controlled means for moving said gage toward the applying member first in one direction and thereafter in a different direction, and means for limiting said movement of the gage.

4. In a shoe cementing machine, an applying member, a shoe-part-supporting gage, a bracket movably mounted on the machine, said gage being slidably mounted in the bracket, and operator-controlled means for rst sliding the gage in the bracket and then moving the gage toward the applying member thereby to lift the work into contact with the applying member.

5. In a machine for applying cement to the bottoms of Welt shoes, an applying member, a work-supporting, crease-entering finger pivotally supported on said machine, means to limit the angular movement of said supporting finger toward the applying member, and operatorcontrolled means for tilting said supporting nger to carry the work toward the applying member.

6. In a shoe cementing machine, an applying member, a pivotally mounted gage-supporting bracket, a gage slidably mounted in said bracket for movement toward and away from a lateral face of said applying member, and operatorcontrolled means for both sliding said gage in the bracket and tipping the bracket to lift the gage toward the applying member.

7. In a machine for applying cement to the bottoms of welt shoes, an applying member, a pivotally mounted gage-supporting bracket, a welt-crease-entering gage finger' slidably mounted in said bracket, a gage-retracting member, and operator-controlled means for projecting said gage finger to position the edge of the welt substantially in registration with the edge of the applying member and for tilting the bracket to lift the welt into contact with the applying member.

8. In a machine for applying cement to the bottoms of welt shoes, an applying member, a movably mounted bracket, a Welt-engaging finger extensibly mounted upon said bracket, and means including a single operator-controlled member for extending said nger and then moving the bracket to lift a piece of Work supported on the linger into contact with the applying member.

9. In a machine for applying cement to the bottoms of Welt shoes, an applying member, a gage linger cooperating with a Welt on a shoe, a bracket pivotally mounted for limited angular movement, said gage finger being slidably mounted on said bracket, and a common operator-controlled means for both sliding the gage With respect to the bracket and tilting the bracket to lift the work into contact with the applying member.

10. In a machine for applying cement to the bottoms of welt shoes, an applying roll, a tiltably mounted bracket, a work-supporting gage slidably mounted in said bracket and normally retracted away from the applying roll, operatorcontrolled means to slide said gage toward a lateral face of the applying roll, and a lost-motion connection between said means and said bracket to tilt the bracket and carry the work into engagement with the applying roll.

1l. In a machine for applying cement to the bottoms of Welt shoes, an applying roll, a pivotally lmounted bracket, a crease-entering gage finger slidably mounted in said bracket, a spring for retracting said gage linger, a bell crank adjacent to said bracket having one arm adapted to slide said gage finger, and a treadle rod for operating said bell crank having a lost-motion connection to said bracket to tip the bracket and lift the extended gage nger to carry the Welt into: contact with the applying roll.

WILBUR L. MACKENZIE.

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