US2824544A - Sole cementing machine - Google Patents

Description

SOLE CEMENTIN G MACHINE Manfred E. Pehrson, Malden, Mass., assignor to Prime Manufacturing Company, Lynn, Mass., a corporation of Massachusetts Application April 15, 1955, Serial No. 501,476

7 Claims. (Cl. 118-407) This invention comprises a new and improved machine for applying a band of adhesive cement to a shoe sole or other shoe part preparatory to attaching a rib, binding or wall thereto. An important field of use for such machines is in preparing flat insole blanks for the adhesive attachment of a sewing rib in the manufacture of Goodyear welt shoes, and the machine of this invention will be described with that field particularly in view.

An important feature of the machine lies in improved mechanism for supporting and directing the sole blank to a cement extruding nozzle, the supporting mechanism being such that a blank of light and flexible material may be positively controlled at all times and presented in flat condition to the nozzle without danger of wrinkling or buckling. Considerable trouble has been encountered in this respect in attempting to use machines heretofore available to the shoemaking industry, and manufacturers have been hampered and restricted in the use of insole blanks of the softness and flexibility that they would otherwise employ.

Accordingly, an important feature of the invention consists in a work supporting disk rotatable about a vertical axis and having an upstanding concentric rib defining a marginal shoulder on the disk and a supplementary disk overlapping the marginal shoulder and rotatable with its circumference adjacent to the concentric rib. A fiat support is thus furnished for the insole which is substantially continuous at the critical point where the insole is engaged by the feeding instrumentalities of the machine.

A further feature of the invention consists in the cooperating supporting disks above described in combination with a driven feed wheel which engages the margin of the sole blank in a location directly above the supplementary disk and adjacent to the point of tangency of the supplemental disk with the concentric rib.

As herein shown, the ribbed disk is yieldingly mounted and the supplementary disk is mounted so that it may move freely up and down with the former. A further feature of the invention consists in the provision of a pair of edge gauge rolls which operatively engage the edge of the sole blank regardless of its thickness and regardless of the vertical position of the supporting disks which may be movable to direct the sole blank in operative relation to an overhead feed wheel mounted for rotation about a fixed axis.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawings in which:

Fig. 1 is a plan view of the operative parts of the machine,

Fig. 2 is a view in front elevation, partly in section, and

Fig. 3 is a view in side elevation.

In the accompanying drawings the frame of the ma- States Patent C ice chine is not shown since it forms no part of the invention and may be of any construction and shape suitable for supporting and driving the operative parts illustrated. These comprise a driven shaft 10 rotatable about a fixed axis and carrying at its enda toothed or serrated feed wheel 11. The work supporting elements include a large fiat disk 12 having an upstanding concentric rib 13 which defines a marginal shoulder on the disk. The disk is secured to a hub 14 fast to the upper end of a shouldered shaft 15 journaled for free rotation about a vertical axis in bearings not shown. The shaft is encircled by a compression spring 16 which urges the disk 12 upwardly at all times to a position depending upon the thickness of the insole supported thereby and its engagement by the feed wheel 11.

A supporting plate or bracket 17 is mountedin the machine for free vertical movement and provided with an upstanding spindle 18 upon which is rotatably mounted a shouldered edge gauge roll 19 carrying a supplementary disk 20 which, as well shown in Fig. 3, overlaps the marginal shoulder of the disk 12 and is free to rotate with its circumference almost touching the upstanding rib 13 of the larger disk. The gauge roll 19 is provided with an overhanging collar 21 and it will be apparent that these elements are free to adjust themselves in accordance with the vertical position of the disk 12 and the thickness of the insole which derives its support from them, that is to say, the supplementary disk 20 rotates always in contact with the marginal top surface of the disk 12 while the collar 21 rests upon the upper marginal surface of the insole at a point adjacent to the rear surface of the feed wheel 11 and substantially in a line between the axes of the shaft 15 and spindle 18.

The movable bracket 17 also carries a second spindle 22 upon which is rotatably mounted a second edge gauge roll 23 located somewhat beyond the edge gauge roll 19 in the direction of feed. This roll is of uniform diameter and is efiective in guiding the sole at whatever point it is engaged by the roll.

A discharge nozzle 24 for liquid cement is supported by a supply pipe 25 for limited movement or vertical adjustment so that it will ride upon the surface of the sole or insole to which the band is being applied. As herein shown the nozzle 24 is cylindrical in shape and provided with a row of discharge ports in its lower wall. It is horizontally disposed, inclined to the direction of work feed, and located so that it intersects a line drawn between the axes of the disks 12 and 20 and extends close to the edge gauge roll 23.

In operating the machine above described the disk 12 is temporarily lowered with the disk 20 and associated parts, thus permitting the insole to be inserted in position beneath the feed roll 11 and the nozzle 24 and in contact with the edge gauge rolls 19 and 23 as shown in Fig. 1. Upon releasing the disk 12 for upward movement, the insole is yieldingly engaged between the rotary supporting elements and the feed wheel. It is then fed continuously under the nozzle 24 and a band of cement applied and carried completely around the upper marginal surface of the sole, as indicated in Fig. 1.

Having thus disclosed my invention and described in detail a preferred embodiment thereof, I claim as new and desire to secure by Letters Patent:

1. A machine for applying a band of cement to an insole, comprising an insole supporting disk rotatable freely about a vertical axis and having an upstanding concentric rib presenting a flat sole-supporting face and defining a marginal shoulder on the disk, a supplementary disk overlapping the marginal shoulder of said insolesupporting disk and presenting a surface substantially flush with and adjacent to the top of the rib thereof, a

feed roll driven about a horizontal axis and cooperating with the supplementary disk to advance an insole, and a cement nozzle occupying a fixed position adjacent to the feed roll and above the sole-supporting disk.

2. A machine for applying a band of cement to an insole as described in claim 1 further characterized by the fact that the insole-supporting disk is mounted for yielding vertical movement and that the supplementary disk is free to ride up and down in the margin thereof.

3. A machine as described in claim 1 in which the insole-supporting disk is spring-mounted for vertical movement and the supplementary disk is free to ride up and down in contact with it in accommodating insoles of different thicknesses, while the cement nozzle is mounted in a vertical position above the insole-supporting disk at an inclination to the direction of feeding movement.

4. A cement applying machine including in its organization a work supporting disk rotatable freely about a vertical axis and having an upstanding concentric rib defining a marginal shoulder on the disk and presenting a fiat sole-supporting face, a supplementary disk overlapping said marginal shoulder and rotatable with its circumference adjacent to the concentric rib and its surface flush with that of the rib, in combination with an overhanging cement nozzle and work feeding means, the nozzle being horizontally disposed, inclined in the direction of the work feed and located so that it intersects a line drawn between the axes of the work supporting disk and the supplementary disk and also to ride upon the surface of the sole to which cement is being applied.

5. A machine for applying a band of cement to an insole, comprising an insole supporting disk rotatable freely about a vertical axis and having an upstanding concentric rib presenting a flat sole-supporting face and defining a marginal shoulder on the disk, a supplementary disk overlapping the marginal shoulder of said insolesupporting disk and presenting a surface substantially flush with and adjacent to the top of the rib thereof, said supplementary disk being provided with an edge gauge roll movable therewith, a feed roll driven about a horizontal axis and cooperating with the supplementary disk to advance an insole, and a cement nozzle occupying a fixed position adjacent to the feed roll and above the sole-supporting disk.

6. A machine as described in claim 5 in which the edge gauge roll of the supplementary disk is provided with a flange overlapping the insole adjacent to the driven feed roll.

7. A machine as described in claim 5 in which a second edge gauge roll is located beyond the driven feed roll in the direction of work feed and adjacent to the cement nozzle.

References Cited in the file of this patent UNITED STATES PATENTS 1,303,283 Fowler May 13, 1919 1,395,270 Glass Nov. 1, 1921 1,794,353 Andersson -2 Feb. 24, 1931 1,928,693 Johnson Oct. 3, 1933 2,038,561 Hadaway Apr. 28, 1936 2,249,742 Brostrom July 22, 1941 2,257,826 Valentine Oct. 7, 1941

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