US1854284A - Shoe cementing machine - Google Patents

Description

April 19, 1932. H. WALTHER SHOE CEMENTING MACHINE Filed March 31, 1930 6 1 0 2 v. l a 0 a 4 1 X 1 w m w my 2 LM wwg 9 7 .1 m w a 4 as a 0 1 7 1 2 3 1 m m a w 3 0 a o m 1 n N a o 5, 4 4W 0 a m y a m 2 7 a a 2 2 9 tal 1 carries the head 2 of the machine.

Pum Apr. 19, 1932 UNITED STATES PATENT OFFiCE SHOE GEMENTING MACHINE Application filed March 31, 1980, Serial No. 440,569, and in Germany April 26, 1929.

In the manufacture of cemented shoes the parts to be cemented are first roughened, then provided with an adhesive, and finally they are pressed together. Hitherto the roughening and cementing is performed in two separate successive operations.

The primary object of the present invention resides in the feature that the roughening, drilling and cementing is performed in w one continuous operation. To this end the adhesive is supplied right after the drilling and the cement is applied to the fibres as soon as they become roughened.

By combining both operations a great deal W of time is saved. Moreover owing to the application of the adhesive to the fibresimmediately after they are roughened there isalmost no possibility of these fibres coming into touch with the fingers of the attendant S or of becoming covered with dust. This is of considerable importance as perspiration and dust hinder an intimate contact between the adhesive and the fibres.

A further important feature of the invention resides in the step that the adhesive is not only applied to the surface of the materials to be cemented but it is also forced deeply into the material itself thus forming a connection between the different layers, as m up er leather, linings and soles.

ther objects of my invention are pointed out in the specification and the claims hereunto annexed.

The drawings illustrate an embodiment of a machine according to my invention.

Fig. 1 is a side elevation of the head of the machine with the container for the cement re%oved;

i 2 is a head Figs. 3 and 4 are illustrative vertical sections showing the roughening tools and their driving means;

Figs. 5 to 10 show difierent successive posis tions and operations of these tools;

Fig. 11 is a cross-section of several layers of material connected according to my invention.

The structure of the maahz'ne.The pedrisl;

front elevation of the machine the head is journalled the shaft 3 which is driven by power in anv convenient manner. At the front end of the shaft is fixed a cam 4 which cooperates with the roll 32 of the slide 5 and imparts to the latter a downward movement. The slide 5 is raised by the spring 6. On the slide 5 is pivoted by means of the bolt 7, the carrier 8 of the awl-like roughening-tools 15. To the lower end of the carrier is fastened the guide 9 of the tools 15.- The to free ends of the tools 15 form cutting edges adapted to penetrate into the material to be roughened.

On the shaft 3 is fixed a cam-disc 10 hav ing cam-grooves on the front and on the rear surface. Into the front groove engages the roll 33 of the lever 11 fastened to the rear end of the swinging shaft 12. To the front end of the shaft 12 is fastened the lever 13 which imparts a slight up and down movement to the slide 14 guided in the carrier 8. The slide 14 transmits its movement to the roughening tools 15 which reciprocate vertically therewith. The front groove causes the shaft 12 to oscillate twice during every revolution.

Into the cam groove at the back of the disk 10 projects the roll 34 of the lever 16. The lever 16 is fastened to the rear end of the swinging shaft 17. To the front end of the latter is fastened the lever 18. This lever is 30 connected by means of the link 19 with the carrier 8 and imparts to the latter a small lateral movement. The amplitude of this lateral movement is adjustable by the slot and pin connection 20.

In the slide 14 is accommodated a rack 21 so as to move therewith in a vertical direction. The rack 21 engages at its left end (see Fig.

.2) with a bolt 35 in a fixed vertical groove 36 of the machine, so that it is prevented from moving horizontally. The rack 21 meshes with a pinion 22 which is in mesh with another pinion ,22'.

Both pinions are journalled in the slide 14. While the slide 14 is laterally oscillating it carries with it the pinions 22, 22' which are thereby forced to rotate by the rack 21 which is laterally immovable.

By these means the tools 15 are also rotated alternatively to the left and to the right. .As no stated the rotating tools 15 are adapted to move with the slide 14 up and down.

In the structure of the machine therefore two parts have a vertical movement, the carrier 8 with the guide 9 of the tools 15 and the slide 14 with the tools 15. The slide 14 moves within the carrier 8 and partakes of its lateral oscillation. By the downward movement of the carrier 8 the guide 9 is brought to bear upon the work and its lateral oscillation effects the feed of the work inasmuch as the tools 15 engage the work during the said oscillation. By the downward movement of the slide 14 the tools 15 are forced into the material. The oscillation of the slide 14 causes the tools to rotate.

The machine-head 2 is provided with an adjustable roll 23 for guiding the shoe or the sole. The shoe is held against the rest 24 while the roll 23 engages underneath the edge of the sole. A second roll may be arranged to keep the sole-edge down.

The glue feeding mechanism is controlled by the cycle of the machine.

The shaft 3 drives by means of the spur wheels 30, 31 a pump arranged within the vessel 25 to force the glue contained therein through the pipe 26 and the channel 27 into the bores 37 of the guide 9. The pressure forcing the glue into the pipe 26 is controlled by means of a check-valve 28 allowing the glueto return into the vessel ,when the pressure exceeds the force of the adjustable spring 29 A The operation of 2 7m ma0hzne.-The workpiece is held against the rest 24 and the ma-. chine is set going. The guide 9 first moves down till it sits fastly on the leather (see Fig. 5). At the same time the tools 15 move downwards and penetrate into the material (seev Fig. 6). Then the tools 15 and their guide perform a common downward and lateral movement to bring the shoe out of contact with the rest 24 and to feed it forward. During the feed-movement the tools 15 rotate and tear up the leather (see Fig. 7). Then the tools raise-to allow the cement to enter from the channel 27 into the bores 37 (see Fig. 8). Finally the tools are moved once more by the front groove of the cam disc 10 downwards and press the cement into the holes made by their first downward movement (see Fig. 9). Thereby a part of the cement is pressed between the single layers of material and is also spread over the surface of the uppermost layer (see Fig. 11).-

Finally the tools and their guide 9 return upward and move to the right into their original position (see Fig. 10). Now the shoe abuts again against the rest 24, and the operation repeats in the manner described.

In the: drawings, the operation of the machine is illustrated in connection with a lasted shoe.

As seen from Fig. 11 of the drawings the I assaeea cement forced into the layers of the material forms rivets 38 connecting the different layers. The sole may be roughened and cemented in a like manner. Before the sole is pressed onto the shoe an intermediate film of cement may be spread over the parts Worked upon in the manner described above. This intermediate film sticks tothe heads of the said rivets and form a reliable connection between the shoe and the sole.

What I claim is 1. In a shoe cementing machine, awl-like tools penetrating into the part worked upon, a guide accommodating the said tools in corresponding bores and adapted to abut against the said part, means for supplying cement into the said bores, and means for forcing the cement from the bores into the holes made by the tools by a repeated movement of the tools against the work-piece.

2. In a shoe cementing machine, awl-like tools penetrating into the part worked upon, means for moving the tools laterally while in the penetrated position for feeding the workpiece, a guide accommodating the said tools in corresponding bores and adapted to abut against the part worked upon, means for supplying cement into the said bores, and means for forcing the cement from the bores into the holes made by the tools by a repeated movement of the tools against the work-piece while in the lateral position.

3. In a shoe cementing machine, awl-like tools penetrating into the part worked upon, means for moving the tools laterally while in the penetrated position for feeding the work-piece, means for rotating the tools while moving laterally, a guide accommodating the said tools in corresponding bores and adapted to abut against the part worked upon, means for supplying cement into the said bores, and means for forcing the cement from the bores into the holes made by the tools by a repeated movement of the tools against the work-piece while in the lateral position.

4. In a shoe cementing machine, solid pointed tools, means for causing penetration of the tools in the parts worked upon, and means for causing said solid pointed tools to assist in applying cement to the worked out parts.

5. In a shoe cementing machine, pointed tools, means for causing penetration of the tools in the parts worked upon, means for causing said tools to assist in applying cement to the worked out-parts, and means for causing the tools to feed the work.

6. In a shoe cementing machine, solid pointed tools, means for causing penetration of the tools in the parts worked upon, means for applying cement to the parts worked upon by the said tools, and means for causing the latter to penetrate the worked parts after the application of the cement. i

'7. In a shoe cementing machine, solid pointed tools, means for causing penetration of the tools in the parts worked upon, means for supplying cement under pressure to the worked parts, and means for causing said solid pointed tools to assist in bringing the cement into position for adherence with the Worked parts.

In testimony whereof I aflix my signature.

HEINRICH WALTHER.

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