US2039321A - Punching and marking machine - Google Patents

Description

' May 5, 1936.. A LAWSON 39321 PUNCHING AND MARKING MACHINE Filed April 16, 1934 3 Sheets-Sheet l 3 Sheets-Shae; 2

A. A. LAWSON PUNCHING AND MARKING MACHINE Filed p il 16, 19:54

illllll M May 5, 13.936.

7 May .5, W36, A. A. LAWSON PUNCHING AND MARKING MACHINE 3 Shssts-Sheet '3 Filed April 16, 1934 Patented May 5, 1936 UNITED STATES PATENT OFFICE Axel A. Lawson,

Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application April 16, 1934, Serial No. 720,701

2 Claims.

This invention relates to machines for operating upon shoe part blanks and is herein illustrated as embodied in a machine for punching and marking soles.

In the manufacture of shoes the soles of which are secured to the upper by adhesive it is common practice in locating the sole relatively to the upper to place along the marginal portions of the sole a coating of adhesive to form part of the means for securing the sole to the upper. This coating of adhesive ordinarily should not extend rearwardly by an appreciable distance beyond the breast line of the sole in order that it will not interfere with the positioning of the shoe relatively to gage devices in the heel-seat fitting operation which is performed subsequently to the sole-attaching operation. It is therefore customary to mark upon the sole the approximate location of the breast line prior to the application of the adhesive in order to determine the limits beyond which the adhesive should not be applied.

In view of the foregoing, it is an object of the invention to provide improved mechanism for placing upon a sole marks in predetermined position relatively to an end thereof to indicate the breast line of the sole. Preferably and as illustrated, this mechanism comprises a work support, a gage for positioning a sole upon the support and a marking device mounted for reciprocation relatively to the support, together with means for 10- eating the marking device along the support in position to mark the sole at the breast line thereof.

In attaching the sole to the upper by means of one type of machine which is extensively employed use is commonly made of a mechanism comprising a member adapted to enter a gage hole in the heel portion of the sole in locating the sole relatively to the upper prior to forcing the sole against the upper under pressure. The gage hole referred to is preferably located along a median line of the heel portion of the sole and. is usually punched in the sole at a point near the center of the heel-seat portion. Since the operation of punching the sole and the marking operation above referred to are both performed prior to the attachment of the sole to the upper I propose to combine the two operations, thus to reduce the number of separate operations required. To this end the marking device and a punch are preferably mounted upon a member arranged for reciprocation relatively to the work support so that the punching and marking operations upon a sole can be performed simultaneously.

Other objects and features of the invention will be apparent from the following detailed description when taken in connection with the accompanying drawings and will be pointed out in the claims. 5

In the drawings:

Fig. l is a perspective view of a machine constructed in accordance with one embodiment of my invention;

Fig. 2 is a side elevation partly in section of the 10 machine;

Fig. 3 is a perspective view of a sole showing a punched hole and breast marks resulting from an operation of the machine;

Fig. 4 is an exploded view illustrating the 15 punching and marking device;

Fig. 5 is a perspective view of the marker;

Fig. 6 is a perspective view showing mechanism for adjusting the position of the marker;

Fig. '7 is a perspective View illustrating a modi- 20 fied form of a punching and marking machine in which the sole is gaged from the forepart; and

Fig. 8 is a view partly in section illustrating an alternative form of mechanism for adjusting the marker. The machine illustrated in Figs. 1 and 25 2 is particularly adapted for use in punching and marking sole blanks such as blank Ill (Fig. 3) to produce therein a gage hole I2 in the heel portion of the blank and marks or indentations I4 at predetermined distances from the heel-end portion of the blank to indicate the approximate breast line of the sole beyond which the marginal coating of adhesive l5 should not extend in a rearward direction.

The machine comprises a C-shaped frame I6 having an extension I8 in which is mounted a plunger 20 carrying a punch 22 and a marking device 24 arranged to be reciprocated relatively to a work support 26 by means of a shaft 28 and pin 30. The punch 22 which is positioned in a bore 32 in the plunger 20 is arranged to cooperate with a female die member 36 mounted in an opening 38 in the work support 26.

For locating a sole, such as sole Ill, relatively to the punch there is provided gage mechanism comprising a plate 40 adapted to be engaged by the heel portion of the sole. The gage plate 58 is mounted for sliding movement along the upper surface of the support 26 and can be adjusted laterally of the punch by means of a knob 42 slidably mounted upon a pin 44 carried by the plate and normally forced toward the plate 4!! by a spring 46. The pin 44 extends upwardly through a slot 48 in a fixed plate 50 which overlies the plate 40, and the knob 42 can be selectively located in any one of several positions in the slot for locating the gage plate 40 in position to engage the heel end of a sole at selected predetermined distances from the center line of the punch, thus to insure that the gage hole is punched approximately at the middle of the heel seat in soles of different sizes, or for shoes of dif ferent styles. The plate 50 has an extension 52 which overlies the die member 36 and has an opening 54 therein to permit the punch to operate upon a sole which has been brought into engagement with the gage plate 40. The plate 50 thus acts as a stripper plate to prevent the sole from rising from the work support as the punch is withdrawn.

The work support 26 is provided with a nose 56 which extends beyond the forward portion of the support and is beveled as indicated by reference character 58 to provide clearance for the heel breast leaf 6!] of the sole, which is bent toward the forepart of the sole out of the line of operation of the punch. The construction referred to makes it possible to locate the sole flat upon the work support in position to be operated upon by the punch and marking device 24.

Means is provided for locating sole blanks in such manner that the median line of the heel-end portion thereof is positioned along the work support 26 and intersects the center line of the punch 22. As shown, this is accomplished by means of two pairs of gages 62 and 64 (Fig. 1). The gages 62 comprise arms 66 which are adapted to engage a blank along a heel-end portion thereof rearwardly of the punch 22. These arms are ivotally mounted at 68 upon the work support 26 and have integral therewith interengaging arms I so arranged that the gages 62 will be caused to move by equal distances inwardly or outwardly of the center line of the work support. The gages 62 are normally forced inwardly by a spring-pressed plunger I2 (Fig. 2) which engages a portion of one of the arms 10. The gages 64 constitute forepart gages and comprise arms I4 which are pivoted at I6 upon a bracket 18 secured to the frame I6 and have interengaging arm portions 80 likewise adapted to cause equal movement of the gages 64 inwardly or outwardly of the center line of the work support 26. The gages 64 are normally forced inwardly by means of a spring 82, inward movement being limited by a set screw 84 which engages one of the arm portions 80. The gage mechanism just described makes it possible readily to locate a sole upon the work support 26 with the center line of the heel portion of the sole located for operative position by the punch, it being necessary only to force the sole inwardly between the gages 64 and the gages 62 until the heel-end portion of the sole contacts with the gage plate 40.

The marking device 24, as shown in Figs. 2 and 4, comprises a shank 86 which is secured to the plunger 20 by screws 88 which extend through openings 90 in the marking device into openings 92 in the end portion of the plunger 20, there being a groove 94 in the plunger adapted to receive portions of a projection 96 on the shank 86 of the marking device for holding the parts in rigid position. The shank 86 is provided with a bore 98 having positioned therein a plunger I00 which carries a bracket I02 constituting a support for a marker I04. Surrounding the plunger I00 is a spring I06 which tends normally to force the bracket and marker downwardly yieldingly to apply pressure to the marker upon descent of the plunger 20, thus providing for the operation of the marker upon soles of difierent thicknesses. The bracket I02 has ways I08 adapted to support the marker I04 which has projecting portions IIO (Fig. slidably engaging the ways, whereby the marker may be moved in a direction paral- 5 lel to the center line of the work support 26. The marker itself is provided with two spaced knife edges H2 which extend transversely of the work support and which are suitable for producing marks or indentations such as indenta- 10 tions I4 in a blank I0 (Fig. 3). Extending laterally from the knife edges is a projection I I 4 which is slidable along the under surface of one of the ways I08. This projection is provided with a beveled portion II6 which serves as a pointer to indicate the position of the marker along a scale I I8 (Fig. 1) carried upon one side of the bracket I02.

The marker I04 is arranged for movement manually along the ways I08 by means of a screw I 20 (Figs. 1, 4 and 6) positioned in the bracket I02 and having two shoulders I22 between which is positioned one arm I24 of a bell crank lever I26 mounted upon a pivot I28 in the bracket. The bell crank lever has an end portion I30 located in a slot I32 in the side of the marker I04 opposed to the pointer H6. Upon rotation of the screw I20 the bell crank lever is moved angularly thereto to adjust the position of the marker along the ways I08. To hold the marker in fixed position there is provided a set screw I34 adapted to prevent rotation of the screw I20. The scale H8 is marked arbitrarily with divisions so that after the setting of the marker has once been determined for a sole of given size, the marker subse- 35 quently can be readily positioned for operation upon soles of that size. Thus it will be seen that the marker can be located at predetermined distances, dependent upon the size of soles being operated upon, from the gage thereby to deter- 40 mine the location of the marks relative to the heel end of the sole. The mechanism just described thus provides comparatively simple adjustment for the marker for different sizes of soles.

In order to prevent the operator from placing his fingers in alinement with the work-supporting and marking devices upon insertion of a blank in the machine there is provided a safety plate I36 (Fig. 1) which is spaced from the frame extension I8 by collars I38 and secured in a rigid position to the extension by screws I40 extending through the collars. The lower end portion of the plate extends downwardly to within a short distance of the work support 26.

In the operation of the machine, the marker I04 is positioned along the scale H8 at a predetermined point corresponding to the size of the sole to be operated upon. The sole is then placed upon the work support 26 forcing it between the gages 62 and 64 until the heel end contacts the gage plate 40 thus to locate the sole longitudinally and laterally of the punch 22 and marker I04. Upon operation of the plunger 20 the punch will produce a gage hole approximately in 65 the center of the heel seat, and the marker will produce indentations in the sole located approximately at the breast line.

Figs. '7 and 8 illustrate a modified form of punching and marking machine provided with gage mechanism for locating soles so that the gage hole and indentations will be made at predetermined distances from the toe end of the sole. The illustrated machine adapted for this purpose comprises a frame I42, a work support I44, a

1 between the two sizes.

plunger I46, punch I41, a stripper plate I48, forepart gages I58, heel end gages I52, and a marker I54, similar in construction to corresponding parts of the machine illustrated in Figs. 1 and 2.

In this instance the marker I54 is mounted in ways I56 carried by the lower end of a plunger I58 and is arranged for longitudinal adjustment by means of a screw I66, which makes threaded engagement with the marker and is operated by a knurled nut I62, longitudinal movement of the screw itself being prevented by a shoulder I64 thereon, and the nut itself which engage opposite sides of a plate I66 secured to the lower end of the plunger I58. The marker I54 has a pointer I68 which is slidable along a scale I10 upon the side of the lower end of the plunger I58. The scale I10 may be marked with three divisions which correspond to the different styles of shoes to which soles are to be attached. The scale provides for the adjustment of the marker to accommodate for a variation in the distance of the breast line due to the particular heel used upon the shoe. For example, it is desired to mark the breast line on a sole to be used with a Louis heel much further forwardly than for a Cuban heel. This adjustment of the marker can be readily accomplished by means of the nut I62.

In order to position soles so that the breast line will be indicated at the correct points regardless of the size of the sole, there is provided a gage in the form of a plate I12 adapted to be located at predetermined distances corresponding to different sizes of soles from the center line of the punch I41 and the marker I54 in one of its adjusted positions. The gage I12 has integral therewith a split collar I14 which is slidable along a rod I16 supported by ears I18 and I86 extending from one side of the work support I44. The collar I14 is provided with a clamping screw I82 for securing the plate I12 in adjusted position along the rod I16. The collar I14 also carries a pointer I84 for use in setting the gage plate in predetermined position along a scale I86 marked upon the rod I16. Each scale division corresponds to the distance which the breastline moves forwardly in advancing from one size of sole to the next larger size plus a correction necessitated by the increase in length of the sole The collar I18 carries a clamping screw I88 by which the gage rod can be clamped in position with the scale I86 properly located relatively to the center line of the punch.

The position of the rod can readily be ascertained by placing upon the work support I44 a sole upon which the breast line is marked, positioning the sole with the marker in alinement with the breast mark, setting the gage plate I12 with the pointer I84 on the division of the scale I86 which corresponds to the size of the sole, then sliding the rod rearwardly until the gage plate I12 engages the end of the sole. The rod may then be clamped into position by the screw I88 and the scale I86 will be properly set for all sizes of soles. The machine is provided with a safety plate I96 corresponding to the plate I36 of Fig. 1 but having a slot I92 in the lower part thereof through which the nut I62 extends.

In the operation of the machine, after adjusting the marker I54 along a scale I16 in accordance with the style of shoe and after setting the gage plate I12 to correspond to the size of sole to be operated upon, the sole is placed upon the work support I44 between the gage arms I58 and I52 and is then brought forwardly until the end of the sole engages the gage plate I12. The plunger I46 is then operated to cause downward movement of the punch and marker to punch a gage hole and produce breast markindentations in the sole which will be in predetermined position upon the forward end of the sole.

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

1. A machine for operating upon soles comprising a work support, a member mounted for reciprocation relative to the support, a springpressed plunger carried by said member and having at its lower end a plurality of ways, a marking device mounted for movement in the ways, a scale upon one of the ways, and a pointer on the marking device for indicating the position thereof along the scale.

2. A machine for operating upon soles comprising a work support, a member mounted for reciprocation relatively to the support, a springpressed plunger carried by said member and having a plurality of ways at one end thereof, a marker mounted for sliding movement in the ways, and means for adjusting the position of the marker in the ways.

AXEL A. LAWSON.

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