US2113684A - Cementing machine - Google Patents

Description

April 12, 1938. H. E. EDWARDS CEMENTING MACHINE Filed July 14, 1937 3 Sheets-Sheet l April 12, 1938. H. E. EDWARDS CEMENTING MACHINE Filed July .14, 1937 .3 Sheets-Sheet 2 EDWARDS CEMENTING MACHINE 3Sheets-Shet 3 Filed July 14, 1937 Patented Apr. 12, 1938 v UNITED STATES PATENT OFFICE CEMENTING MACHINE Application July 14, 1937, Serial No. 153,611

4 Claims.

This invention relates to cementing machines of the type in which a properly shaped applying die impresses a spot of cement on a previously positioned piece of work.

One type of shoe, utilized largely for summer wear, has an upper which is. composed chiefly of a plurality of straps, the ends of these straps being secured between an insole and an outsole. The lasting of such shoes is greatly facilitated if the operator knows where the ends of the straps should be placed as they are drawn over the bottom of the insole. It has been suggested, accordingly, as is disclosed in an application of H. C. King, Serial No. 151,877, filed July 3, 1937, that prior to the assembling of the shoe, the insole should be prepared by applying thereto spots of colored cement in the positions where the ends of the straps are to be secured. This cement thereby performs the double function of showing the desired position of the straps and of temporarily attaching the latter in position where they can later be permanently attached with staples or secured by stitching together the insole and outsole.

For the application of spots of cement, ma-

' chines of the impression type have been provided,

utilizing an applying die mounted on a swinging carrier by which the die is moved from a cementpick-up position to a cement-applying position. With such machines, difficulty has been experienced because of the tendency of the die to apply more than the desired quantity of cement and to squeeze it out or spread it over an area greater than the desired area, as determined by the outline of the die.

Accordingly, an important object of the invention is to provide an improved cement-applying machine which will avoid this difliculty.

A feature of the invention resides in the utilization of a cement-pick-up member with which the applying die may be contacted and which will have a slightly smaller contour than that of the applying die so that when the applying die is brought into contact with the work, there will be no tendency for it to spread cement beyond the predetermined outline of the die itself. In the illustrated machine, the pickup member is dipped in a cement receptacle and lifted above the cement as the swinging carrier brings the die into receiving position for contact with said pick-up member.

These and other features of the invention will be best understood from a consideration of the following description, taken in connection with the accompanying drawings, in which Fig. 1 is a plan view of the machine;

Fig. 2 is a side elevation thereof;

Fig. 3 is a longitudinal section showing the pick-up member delivering cement to the applying die, and

Fig. 4 is an angular view showing one particular applying die and an insole which has been coated thereby.

A machine such as is herein illustrated may be utilized for applying cement to many different sorts of work pieces. It will be described herein as utilized for applying spots i!) (Fig. 4) of colored cement around the margin of the forepart of an insole l2, shown bottom-side up, which is to be employed in a strap sandal. The insole will be tacked in the position shown to the bottom of a last and straps forming the upper of the shoe drawn around the last will have their end portions overlasted on the spots of cement in, these spots thereby indicating the exact position. de- A sired for the straps and serving also to hold the straps temporarily in position. When the machine is utilized for this particular purpose, it will be provided with a pair of applying dies I 4 having properly shaped applying members 16 which are provided with grooves H3 in order that they may more readily carry the cement. These dies are mounted on a backing board 20 having a spring fastener 22 (Fig. 3) by means of which the dies may be detachably secured to the crossbars M of a carrier 26.

This carrier 26, having an operating handle 28, is pivotally supported at the upper ends of four parallel links comprising two forward links 3!] and two rear links 32. These links are pivotally attached at 34 and 36 (Fig. 2) to the sides of the frame 40 of the machine which at one end supports a cement receptacle 42 and at the other end has a work table 44 recessed to receive a resilient work-supporting pad 46.

To adapt the machine for use with insoles of diiferent sizes, the table is provided with a removable templet or gage plate 48 (Fig. 1) positioned on the work support by jig pins 50. The gage plate is provided with recesses 52 into which the insoles may be dropped to hold them temporarily in exact cement-receiving position. on the work table. It will be understood that the rear ends of these recesses fit closely around the foreparts of the insoles.

The picking up of cement from the receptacle and the delivery of it to the applying die 14 is accomplished by means of a pair of similar pickupmembers 54 which are, in effect, dies having plates 56 detachably secured to a perforated grid 58 mounted in the receptacle for up-and-down movement. To this end, this die-carrying grid is provided with two similarly shaped lifting devices comprising lifting plates 80 rigidly connected by a crossbar (not shown) beneath the receptacle 42. Attached to opposite sides of the grid are U-shaped straps 62 which overhang the edges of the receptacle with their outer ends above the plates. 60 thereby enabling the grid to be raised With the plates when the latter are lifted. As will be seen from Fig. 2, the plates are provided with pairs of inclined surfaces 64 resting against the projecting ends of rods 68 extending transversely of and attached to the bottom of the cement receptacle 42. The lifting plates 60 are also provided with laterally extending vertical flanges H1 which lie in the path of movement of cam rolls 12 attached to the inner ends of studs 14 (Fig. l) secured to the swinging arms 32. These studs 14 project through arcuate slots 16 (Fig. 2) in the frame of the machine. As the carrier 26 with the applying die I4 is moved to the left in Fig. 2, the cam rolls 72 contact with the vertical flanges 1B, sliding the lifting device to the left. The top edges of the lifting plates 60 contact with the bottom ends of the straps 62 on the carrying grid 58 and the latter is moved upwardly to raise the supplying members 54 out of the' cement in the receptacle and press them into contact with the applying members [6 on the die M in symmetrical relation or register therewith.

It will be noted from Figs. 1 and 8 that these supplying or pick-up members 54 are of similar shape to but are slightly smaller in size and contour than the corresponding component members on the applying die l6 so that cement is only supplied to the mid portion of the die members and does not extend all the way to the edges thereof. When the die carrier 26 is moved back to a position to coat the work, the pick-up members drop back into the cement in the receptacle and the applying dies are pressed into engagement with the insoles previously positioned in the recesses of the gage plate 48. It will be understood that for other sizes of insoles, a gage plate having differently shaped recesses will be provided and that the machine will be supplied with applying dies and pick-up members of corresponding appropriate shape and size. In view, however, of the fact that the applying dies may overlap the edges of the insoles without harm, one set of dies and pick-up members will suffice for a plurality of sizes of insoles.

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

1. In a cementing machine, a cement-applying member movable from a cement-receiving position to a position where it is pressed against a piece of work, a cement receptacle, and a cementsupplying member movable into and out of the receptacle .and into contact with which the applying member is brought to receive a supply of cement, said applying member having a shape similar to that of the applying member and being smaller in contour.

2. In a cementing machine, a cement receptacle, a cement-supplying member movable in said receptacle, a work support, means for locating a piece of work on the work support, an applying member, means for moving said applying member from a position in register with said supplying member to a position in register with the work on the work support, and means for moving said supplying member into the cement in the receptacle and then lifting it into contact with the applying member, said supplying member being smaller than the applying member so that it deposits cement on the latter Wholly within the boundaries. thereof.

3. In a cementing machine, a frame having a Work support, means for locating a piece of work on the support, a cement receptacle on said frame rovided with a movable grid having a die carrier, a swinging carrier mounted on parallel links above the frame, an applying die on the carrier, and means responsive to movement of the carrier for raising the supplying die above the cement in the receptacle as the applying die is brought into contact therewith, said supplying die being of similar shape to the applying die and of less size.

4. In a cement-applying machine, a frame having a cement receptacle at one end and a work support at the other end, an applying member, parallel swinging links pivoted on the frame and supporting said applying member for movement from a position above the receptacle to a position where the applying member contacts with a piece of work on the work support, a cement-supplying member within the receptacle and provided with a lifting device extending over the sides of the receptacle, said lifting'device comprising fixed pins on the frame and inclined surfaces on the device, said lifting device also having an abutment, and a member on one of said swinging links adapted for contact with said abutment to cause the inclined surfaces of the lifting device to ride up the fixed pins thereby to lift the supplying member into contact with the applying member as the latter is swung over the receptacle.

HERBERT E. EDWARDS.

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