US2213586A - Cutting die for ornamenting parts of shoe uppers - Google Patents

Description

c. s. KNIGHT 2,213,586 CUTTING D IE FOR ORNAMENTING PARTS OF SHOE UPPERS I Sept, 3, 1940.

Filed Oct. 25, 1938 5 Sheets-Sheet 1 .0; nmmomomow INVENTOR ATTORNEY.

c. s. KNIGHT 2,213,586 CUTTING DIE FOR ORNAMENTING PARTS OF SHOE vPPERs Sept. 3, 1940.

Filed Oct. 25, 1938 5 Sheets-Sheet 2 INVENTOR W5.

ATTORNEY, I

C. S. KNIGHT Sept. 3, 1940.

CUTTING DIE FOR ORNAMENTING PARTS OF SHOE UPFERS 5 Sheets-Sheet 3 Filed 001;. 25, 1958 ATTORNEY P 3, 1940 c. s. KNIGHT 2,213,586

CUTTING DIE FOR ORNAMENTING PARTS OF SHOE UPFERS Filed Oct. 25, 1938 5 Sheets-Sheet 5 Patented Sept. 3, 1940 TEN lCE CUTTING DIE FOR ORNAMENTING PARTS OF SHOE UPPERS Chesterton S. Knight, .Brockton, Mass, assignor to Geo. Knight & 00.,

Brockton, Mass, a copartnership composed of George Knight, George R. Knight, Chesterton S. Knight, Knight, and Carlton E. Knight F. Stuart Application October 25, 1938, Serial No. 236,851

19 Claims.

This invention relates to dies for perforating, marking or cutting parts of the uppers of shoes.

It is especially concerned with dies of this type designed to operate on Vamps, and on any other similarly shaped pieces of stock in which essentially the same problems are presented as, for example, on the wing tips of some styles of shoes. Such parts will be hereinafter included in the v specification and claims, where the context perm mits, in the terms vamp or Vamps. It is a common practice to ornament the edge of the throat portion of a vamp by perforating, pinking, or often by a combination of the two.

Because of the expense involved in making perforating dies of the common rigid type necessary to handle a complete range of sizes of Vamps, it has been the more common custom to perforate these portions of a shoe on a machine in which the perforating operation proceeds progressively along the edge of the work. The pinking operation has been done in the same manner. Such a method obviously involves a considerably greater labor cost than that required in performing the entire operation on a vamp in one stroke of a per- 5, forating press.

With a view to obviating this difiiculty it has been pro-posed to make adjustable dies for doing this work in a perforating press, but these constructions have been so complicated and have had so many objectionable features, that they have not attained any substantial degree of commercial success.

The present invention aims to devise an adjustable vamp die which can be used in the same 35.v manner as a solid die, will be simple in construction, rapid and reliable in operation, economical in upkeep and which can be manufactured at a reasonable expense.

The nature of the invention will be readily 40; understood from the following description when read in connection with the accompanying drawings, and the novel features will be particularly pointed out in the appended claims.

In the drawings,

Figure 1 is a plan View of a die structure constructed in accordance with this invention;

Fig. 2 is a bottom view of the structure shown in Fig. 1;

Fig. 3 is a plan View showing a series of central 50;clie sections adapted to be used with a single pair of wing dies or lateral die sections; I

Fig. 4 is a perspective View of portions of the die structure shown in Figs. 1 and 2;

Fig. 5 is a sectional view of one of the gauge 5 5 pins and its supporting bushing;

Fig. 6 is a chart or diagram showing the range of sizes with which the different inserts illustrated in Fig. 3 may be used; and

Fig. 7 is a diagrammatic view illustrating the procedure followed in laying out the die structure shown;

Referring first to Fig. 7, the outline of a typical vamp pattern or vamp is shown at A. Assuming that this is a size 11 a corresponding pattern a for a 5 would have the outline shown in dotted lines at B. The similarity in shape and the difference in size of these two Vamps is clear from the fact that they are superposed on the same center line. Considering now merely the lateral edges a and b at one side of the throat portions of these two Vamps, and assuming that the smaller one is moved up until the edge I) registers as nearly as possible with the edge a, it will be found that these two edges register almost or quite ex-' actly with each other from a point near the upper left-hand corner down to the point e where the edge b swings inwardly away from the edge a.

Obviously the same will be true at the other side of the throat. Thus it will be evident that if a die section were made to perforate the entire edge a from the point 0 to the point d (or more properly to the beginning of the lasting allow-I ance adjacent to the latter point) the same section could also be used to perforate the corresponding portion of the edge 12 down to the point e.

- The present invention proposes to make use of this fact. In other words, it provides a die having two lateral sections adapted, respectively, to perforate the edge a between the points 0 and d and the edge a. between the corresponding points 0' and d.

It will be evident that in order to complete the perforation of, the entire edge of the throat of the vamp A, it will be necessary to provide a central die section to operate on the portion of the edge .0, f, c. It will also be clear, however,

' that the same lateral dies can be used to perforate the vamp B if another central die section is provided to perforate that portion of the edge between the points e and 6'. Similarly, these same wing dies l0 and I0", Fig. 1, are arranged to co- 5 operate with any section l6 and are mounted for adjustment into diiferent positions appropriate for operation on the various sizes of vamps. In this particular construction provision is made for supporting each of the central sections with their approximately horizontal cutting edges in a common line extending through the point f, Fig. '7. The perforating and cutting portions of these center dies will vary in width as measured along the center line :13x and also in length. Consequently, it is necessary that the adjustment of the lateral dies and H3 shall include provision for moving them backward and forward and also laterally to accommodate the variations in dimensions of the throat portions of diiferent sizes of vamps.

Referring now to Figs. 1, 2 and 4, the die structure there shown comprises a relatively thick base plate 2 and a stripper plate 3 spaced from it. Between these two plates is mounted a slide comprising a plate 4 having bars and 5 secured rigidly to it, or made integral therewith, and fitting snugly but slidably in grooves formed in the base plate. One of these grooves is shown in Fig. 4 at 6. Gibs, one of which is shown in Fig. 4 at I, cooperate with the plate 4 to hold the bars in their respective grooves. As best shown in Fig. 2, the base plate 2 is routed out to provide recesses 8 and 8' in which the lateral die sections I0 and H! are mounted. These dies are connected with the respective bars 5 and 5 by pins or rolls I 1-! i, Fig. 2, running in cross slots formed in the bars.

As above indicated, the two die sections l0 and ID are designed to perforate the edges a and a, Fig.7, of the vamp A, behind the respective points 0 and 0. And the adjustment of them requires not only a longitudinal sliding movement which is imparted. to them through the slide 4 and bars 5 and 5, as will presently be described, but also a pivotal movement. It is preferable to locate the pivots for these two sections on points g and g, respectively, which bear approximately the relationship to the edges a and a shown in Fig. 7. Provision is made for adjusting these pivot points along the respective lines :B1/ and x-y'. For this reason the base plate 2 is grooved on its lower surface to, receive slides l2l2' which are pivoted to the die sections l0 and ID at l3 and [3, respectively, the axes of these pivots corresponding approximately to the pivot points g and g. Strong springs I4-I4' act on the slides to pull them toward the front of the die structure, these springs being anchored to a plate l5 secured rigidly to the bottom of the plate 2. Thus they serve to hold the adjacent ends of the die sections l0 and ID in contact with their cooperating central die section I6, Fig. 1.

The adjustment of said dies l0 and I0 is effected through the operation of a lever I'I, Fig. 1, pivoted on the base 2 at l8 and provided with a cam slot in which a. pin or roll 2| is mounted, such pin being secured in the plate 4 and projecting downwardly therefrom as shown in Fig. 4. Cooperating with the lever is a pointer 22 movable therewith over the margin of a size scale 23. A spring pressed detent or pin 24 mounted on the lever is arranged to enter any one of a series of notches 25 formed in the edge of the scale plate to lock the lever in different positions of adjustment. The pin is equipped with a knurled handle 26 by means of which it may be withdrawn from the notches to unlock the lever.

Adjustment of the wing dies to a different center die is accomplished by swinging the lever I1 .aft relationship of the dies toward the left, Fig. 1, to a position somewhat beyond the last size notch. As it passes this point the forward edge of the plate 4 engages two pins or rolls 21-21 carried by and projecting upwardly from the respective slides I2 and I2 so that further rearward movement of the plate moves the slides backwardly. They carry the pivots |3l3' with them. At the same time the bars 5 and 5 are moving the dies I I! and I0 rearwardly. Thus a combined longitudinal sliding and pivotal movement is imparted to each of the lateral die sections. As soon as these parts have been moved out of their cooperative relationship to the central die section IS, the latter may be removed and replaced with another of a. different size. When this has been done the lever I1 is swung toward the right, Fig. 1, and the die sections In and I0 thereupon are drawn forwardly by the springs l4--l4 acting through the slides l2 and I2 until the forward edges of the lateral dies strike the rearward edge of the newly inserted die Hi. This die bears a number and it has been selected presumably by reference to the chart shown in Fig. 6, the die numbers being found in the left-hand column under the heading Ins. (abbreviation for insert). The operator then moves the lever I! to locate the pointer 22 opposite the size number on the scale 23 corresponding to that of the vamp which he is to perforate. This latter movement of the lever does not change the fore and I0 and [0' with reference to the center die 16 since that is controlled by direct contact of the center and wing dies with each other, the rearward edge of the plate 4 having been withdrawn from contact with the pins 2127. With the die parts in this position, however, which is correct so far as fore and aft adjustment is concerned for operating on certain length sizes as specified in the chart 30, Fig. 6, the wing dies l0 and I0 may still be swung on their respective pivots l3 and [3' by movement of the lever I! in order to position them properly for operation on different sizes. Such movements of the lever move the slide 4 slightly and, through the bars 5 and 5' and the cooperating pins II and II, swing the lateral dies toward or from each other.

Each of the center dies is mounted in a fixed position in the die structure. These dies are indicated in general by the numeral [6, the different sizes being designated in Fig. 3 by subletters associated with said numeral. By referring to the latter figure it will be observed that each of the dies there shown is provided with two dowel pins 3I3l, rigid therewith and exg tending downwardly therefrom, as shown in Fig. 4. These pins are adapted to enter holes in the bed plate 2. The cutting, marking, or other ornamenting elements, consisting in this case of a pinking knife P and perforating tubes T, are mounted on the bases of these die sections in such a manner that corresponding elements of different dies of the entire series bear the same relation to the centers of the dowels 3|3l. Referring, for example, to the top die I61, Fig. 3, it will be observed that the point of the center pink 7) is in the center line connecting said dowels. This pink is usually made larger than the others because it is customarily used as a guide mark in assembling the vamps with other parts of the uppers. This same relationship is maintained in all the other center dies. In general, this center pink may be regarded as corresponding to the point J, Fig. :7, and accordingly this arrangement ensures the centering of the pink 1), Fig. 3, of each die substantially on the point 1, or on some corresponding point selected for this purpose in dies of other designs.

In order to facilitate the registration of the die elements of the sections Ill-40' with those on the center die !6, each of the latter dies is provided with keyways 32--32, Fig. 3, to be engaged by corresponding keys extending forwardly from the ends of the lateral dies. While these keyways are located further apart on the die "if than on any of the others, it will be observed that the axes of the pivots l3l3 travel along the respective lines :B11 and r-y, Fig. 7, during adjustment into different size positions. Accordingly, the registering keys which enter these keyways will necessarily be farther apart when the lateral dies are adjusted to cooperate with a large center die than with a small one.

Each of the lateral die sections also carries a locking lug 34, Figs. 1 and 4, which overlaps the upper margin of the center die and prevents it from being lifted out of place accidentally. When the lever 11 is swung to the left, Fig. 1, to move the lateral dies backwardly, that move ment also releases the center die from the looking lugs 34-44 so that the die can then be lifted out of its operative position and can be replaced by another one.

In their general construction the dies may be like the solid dies heretofore used in perforating presses. The lower portions of the dies l8 and Hi under the perforating tubes are routed out, as shown at 35 in Fig. 2, to permit the pills forced through the tubes to drop out of the die structure. Also, the base plate Z'is similarly machined out to permit the escape of the pills discharged by the center die Hi. All of these dies also may be equipped with the usual spring pressed gage pins, one of which is shown at 35 in Fig. 5, to assist in positioning the work. It will be seen from an inspection of Fig. 3 that each of the center dies is provided with two holes 37-3? for the passage therethrough of two of these positioning pins 36 mounted in the base plate 2, as shown in Fig. i. Portions of the lateral dies overlap parts of the base plate at both top and bottom so as to hold these dies in their operative positions in the die struc ture while permitting the adjusting movements of them, as above described. Two hold-down springs 38-38, Fig. 1, are. provided on the stripper plate 3 to hold the material firmly, but

releasably, against the surface of said plate. Preferably an improved form of guide pin 36 is used. It is illustrated in Fig. 5. As there shown the pin itself is mounted in a bushing 42 having a shank which is screwthreaded into the base plate 2. The top of this bushing is approximately level with the surface of the die plate except for an integral tubular extension projecting somewhat there-above. This bushing thus provides a long guiding surface in which the pin 36 can slide, and which affords ample lateral support for it. Its upward movement under the influence of the spring 43 is limited by a shoulder or flange 44 formed on the lower end of the pin. Thus this pin is mounted independently of both the pin plate and stripper plate, whereas in prior constructions one or the other of these members has been depended upon to guide or to give lateral support to the pin. Preferably the bushing is provided with notches 45 to receive a screw driver, spanner wrench, or other tool by means of which it can be screwed into or out of place.

Preferably a rigid handle or bail 40 is fastened securely to the base 2 where it may be conveniently grasped by the operator and used in pushing the die into the press and withdrawing .it therefrom in accordance with the usual practice.

It will be evident from the foregoing that the invention provides a die structure adapted for use in ornamenting vamps which can be used in the same Way as a solid perforating die and with which vamps can be perforated at a single stroke of the press in exactly the same manner as has been customary heretofore in operating on other parts of shoe uppers to ornament them. At the same time the die is adjustable to accommodate an entire range of sizes. While the particular die shown is designed to take sizes from 5 to 14, inclusive, in four widths, it will be evident that merely by making suitable changes in design a die structure embodying the same features can be made to accommodate a larger or smaller range of sizes. Also, the nature of the construction is such that the die can be manufactured within reasonable price limits, and it has the sturdy qualities necessary to enable it to give an ample period of service without requiring excessive expenditures for 'upkeep.

It usually is not necessary to use a separate center die section for each size of shoes, and a typical range of sizes which can be perforated with a single center die is indicated by the chart shown in Fig. 6. While this is a chart actually used in ornamenting vamps for a range of sizes with die sections like those shown in the drawings, it should be understood that its inclusion in the specification has been made simply by way of explanation and that other patterns very likely would require very different charts. With this particular pattern the six center dies shown in Fig. 3 cooperate with the lateral or wing dies illustrated in the drawings in handling the entire range of sizes from 5 to 14 in the four widths referred to in the chart.

\Vhile I have herein shown and described a typical embodiment of my invention, it will be understood that the invention may be embodied in other forms without departing from the spirit or scope thereof. In fact, changes necessarily will be required to adapt the invention to different styles of vamps.

Having thus described my invention, what I desire to claim as new is:

l. A die for ornamenting shoe vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central section for operating on the portion of said edge between said lateral portions, means supporting said central section for removal and replacement by a similar section of a different size, and means supporting said lateral sections for bodily adjustment to cooperate with diiTerent central sections in operating on different sizes of vamps.

2. A die for ornamenting shoe vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central section for operating on the portion of said edge between said lateral portions, means supporting said central section for removal and replacement by a similar section ofa different size, and means operable to adjust said lateral sectionslongitudinally into cooperative relationship to any one of a series of said central sections.

3. A die for ornamenting shoe vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central section for operating on the portion of saidedge between said lateral portions, the junctions between said lateral and central sections being behind the curves connecting the central approximately straight portion of said edge with the lateral portions thereof, and means supporting said lateral sections for slidable adjustment both laterally and longitudinally into different positions appropriate for operating on Vamps of different sizes.

4. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, means supporting said sections for adjustment into different positions appropriate for operating on Vamps of different sizes, and mechanism for adjusting said sections comprising a lever, connections through which the movement of said lever is transmitted to said lateral dies to adjust them simultaneously, and a scale cooperating with said lever.

5. A die for ornamenting the edges of the throat portions of shoe Vamps comprising a central die section, lateral die sections cooperating with it, a support for said sections, means releasably securing said central section in a fixed position on said support so that it may be removed and replaced by a similar section of a different size, said lateral sections being slidably adjustable laterally and longitudinally into different positions appropriate to cooperate with different central sections in operating on Vamps of different sizes, and means for holding said dies in their cooperative relationship to each other.

6. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central die section cooperating with said lateral sections and mounted for removal and replacement by a similar section of a difierent size, means sup porting all of said sections, said central section being adapted to operate on the part of said edge between said lateral portions, and means for adjusting said lateral sections into different positions suitable for operating on Vamps of different sizes comprising a slide, means for moving said slide, and connections between said slide and said lateral sections for giving each of said sections a combined sliding and pivotal movement.

7 A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central die section cooperating with said lateral sections and mounted for removal and replacement by a similar section of a different size, means supporting all of said sections, said central section being adapted to operate on the part of said edge between said lateral portions, and means for adjusting said lateral sections into difierent positions suitable for operating on Vamps of different sizes comprising two bars connected to each of said lateral sections and mounted to slide in different directions, and means for sliding said bars simultaneously.

8. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central die section cooperating with said lateral sections and mounted for removal and replacement by a similar section of a different size, means supporting all of said sections, said central section being adapted to operate on the part of said edge. between said lateral portions, and means for adjusting said lateral sections into different positions suitable for operating on Vamps of different sizes comprising a lever, and connectionsthrough which movements of said lever are trans:- mitted to said lateral dies to adjust them simultaneously.

' 9. A die structure according to preceding claim 8, in which said means for adjusting the lateral die sections is operable to adjust them into positions suitable for operating on Vamps of different widths without disturbing the cooperative relationship between said die sections. 10. A die structure according to preceding claim 8, including means operated by said lever for releasably locking said center die in its operative position.

11. A die structure according to preceding claim 6, in which the connections between said slideand each of said lateral sections comprises two bars mounted in the die structure for longitudinal sliding movement, and one at least of said bars having a pivotal connection with its respective die section.

12. A die structure according to preceding claim 6, in which the means for adjusting said lateral sections is constructed and arranged to move the pivots of said sections along converging lines, while the sliding components of said adjusting movement of the respective dies are directed along substantially parallel lines.

13. In a die structure of the character described, the combination with a base plate, die elements mounted thereon, and a guide pin for aiding the operator in positioning the work relatively to said elements, of a bushing threaded into said base plate and provided with a relatively long bore in which said pin is guided for vertical movement, and a spring acting on said pin to hold it normally in a raised position.

14. A die for ornamenting shoe Vamps comprising sections adapted tooperate on the lateral portions of the edge of a vamp throat, a central section for operating on the portion of said edge between said lateral portions, each section including a knife for cutting a portion of the edge of the vamp, said knives being independent of each other, means supporting said central section for removal and replacement by a similar section of a different size, and means operable to adjust said lateral sections simultaneously into cooperative relationship to said respective central sections.

15. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of. a vamp throat, a central section for operating on the portion of said edge between said lateral portions, means supporting said central section for removal and replacement by a similar section of a different size, and means supporting said lateral sections for adjustment into different positions suitable for cooperating with different central sections in operating on different sizes of Vamps, said lateral sections and said central sections having keys and keyways to accommodate said keys serving to position the lateral and central sections in correct register with each other.

16. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central section for operating on the portion of said edge between said lateral portions, the junctions between said lateral and central sections being behind the curves connecting the central approximately straight portion of said edge with the lateral portions thereof, means supporting said lateral sections for slidable adjustment both laterally and longitudinally into different positions appropriate for operating on Vamps of difierent sizes, and spring means for holding said sections releasably in their cooperative relationship.

17. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central section for operating on the part of said edge between said lateral portions, means supporting said central section for removal and replacement by a similar section of a difierent size, and means supporting said lateral sections for combined longitudinal and lateral adjustment into positions suitable for cooperation with said central section in operating on Vamps of different sizes.

18. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a vamp throat, a central section for operating on the part of said edge between said lateral portions, means supporting said central section for removal and replacement by a similar section of a different size.

and means supporting said lateral sections for combined sliding and pivotal adjustment into positions suitable for cooperation with said central section in operating on Vamps of different sizes.

19. A die for ornamenting shoe Vamps comprising sections adapted to operate on the lateral portions of the edge of a Vamp throat, a central section for operating on the part of said edge between said lateral portions, means supporting said central section for removal and replacement by a similar section of a different size, and means supporting said lateral sections for pivotal adjustment respectively around centers positioned approximately in the straight portions of the lateral edges of the vamp throat adjacent to the junctions of said edges with the central edge portion of the throat and also for forward and rearward adjustment of said centers, to move said lateral sections into cooperative relationship tocentral sections of different sizes.

' CI-IESTERTON S. KNIGHT.

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