US1401365A - Box-toe form - Google Patents

Description

A. 1. RYAN.

BOX TOE FORM.

APPLICAIION FILED JAN- 9, I920- Patented Dec. 27, 1921.

A TTU/P/Vf rs.

ALBERT J. RYAN OF CINCINNATI, OHIO.

BOX-TOE roam.

Specification of Letters Patent.

Patented Dec. 27, 1921.

Original application filed March 24, 1919, Serial No. 284,701. Divided and this application filed Jan- 1 nary 9, 1920. Serial No. 350,365.

Toall whom it may concern Be it known that I ALBERT J. RYAN, a citizen of the United States, and a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Box-Toe Forms, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

'My invention relates to 'dies, forms or lasts, to be employed in the pro-forming of box toe pieces for shoes, and is a division of pay application Serial N 0. 284,701 filed r arch 24, 1919, on methods for manufacturing. shoes.

The toe last or form, which forms the subject matter of my invention is adapted to be used in the shaping of box toe pieces of the desired material prior to their incorporation into the shoe. Such toe pieces are ordinarily impregnated with a material which may be made plastic and will then harden.

I have found that among the requisites in the pre-formation or fixation of a box toe piece to be placed into a shoe as a subsequent step in shoe manufacturing processes, is a form or last over which the piece is to be formed, which is of different character from the shoe last on which the box is to be assembled together with the upper.

While it is possible to em loy the shoe last itself in making molde box toes, I have found this very unsatisfactory, both from the point of view of unnecessary wear on the shoe last, and from the point of view of providing a form which will pr duce a toe having clean lines and clearly defined underfolds.

Among other features for the toe last, must be some sort of under cutting beneath the toe, which will provide a shoulder against which to press or draw the edges of the plastic toe iece thereby forming a clean line at the un erfold, and bringing about a erfect sha ing of thepiece to the curves oft e last.

urthermore the forming of a channel be neath the upper surface of the toe provides a means for forming a distinct depending shoulder from the underfold of the box toe piece which is adapted for stitching to the ip of an insole.

It is thus my object to provide a toe form or last preferably of the precise shape required for each last, and to provide in connection with it means in the nature of a channelunderlying the upper surface of the toe form proper.

This object and other advantages to be noted I accon'lplish by that certain construction and arrangement of parts to be hereinafter more specifically pointed out and claimed.

In the drawings,

Figure 1 is a side elevation of one of the preferred forms of toe last.

Fig. 2 is a section taken on the line 2-2 of Fig. 1.

Fig. 3 is a top plan view of the parts shown in Fig. 1.

Fig. 4 is a perspective view of a box prepared according to my invention for use with welt shoes.

vFig. 5 is a like view of a box for McKay shoes.

Fig. 6 is a sectional view taken through the toe of a regular shoe last with the upper and box in place after being pulled over, showing also a welt.

Fig. 7 is a like view of the toe of a regular shoe last showing the upper, box and insole for McKay shoes.

As a preferred method of forming my article, I propose to employ the master last of any desired shoe, for which my invention is to be used, and a last turning machine will be used to make box toe lasts of identical toeform to the last that is employed. This can be done by securing a piece of wood on the base of the toe of a master last, in the last makingmachine and proceeding on a block of wood inserted in the machine, exactly as is done for the regular lasts, turning out one or more toe lasts for each different shape or size of last furnished with any one order. The adding of the block of wood to the base of the toe of the master is for the purpose of bringing an extension down say three quarters of an inch from the lower edge of the regular shoe last toe.

The toe molds or lasts will be thereupon placed in a grooving machine and a chanme] out around the extended portion beneath the toe. 1

As shown in Figs. 1, 2 and 3, the toe last 1 is thus provided, having its upper toe portion. 2. in substantially the exact shape of the last number and size, with which it is marked, according to usual last practice. Just at the under side of the toe, where the last for the shoe would find its sole portion or base, the channel 3 is cut in. The balance a of the extra wood on the base of the toe last will be permitted to remain for facility in working, as will be noted.

It will be remembered that the molded box must be inserted between the upper lining and the outer portion of the upper, and thus that it will be too small if it conforms exactly to the upper surface of the last itself with which it is employed. Accordingly the toe last is made with a too portion 2 slightly larger than the regular last of its size and number. This extra size is particularly important at the under portion of the toe, so that the total thickness of the toe last is i greater than the toe of the ultimate shoe last by an amount equal to the thickness of the insole which it 1s proposed to use. This 1s because in the making up of a shoe the box must extend over the last and edge or feather of the insole, as well. 7

One way in which I provide for the oversize of the toe portions of my new former, is to equip each toe last with a rubber cover in the shape of the piece 5, which is held over the toe smoothly, by means of being drawn around and clamped tightly into the channel of the toe by means of a spring 6. The spring is shaped to conform to the channel in the last and may be easily forced into place in the toe mold channel.

Each toe mold rubber cover according to this modification will preferably be provided with the number of the last and size in embossed letters thereon, as shown at G in Figs. 1 and 3. The letters will be imprinted in the under side of the box toe pieces molded over this last, and thus effectively mark the toes for use, so that they can be made in quantity and held until desired by the shoe manufacturer.

' I may also provide the box toe inolder with a marking stamp equipped with changeable numbers and letters, and have him stamp in colored ink the number on each box as he lifts it from the molding machine. In this case, the rubber cover for the last could be a piece kept at hand by the molder andclipped or tied into the channel in the toe mold, when work was started thereon.

In either of the two latter instances the rubber serves not only to protect the toe mold from being affected by steam,or chemicals used in the softening of the box material, but it also slightly expands the size of the form or last so that it brings the molded toe to just the right size to fit outside of the lining over the last of the desired shoe.

The simplest method of accomplishing my purpose is to turn out the toe last itself to the desired size in the last machine which is readily possible in the last making machine.

To properly arrange for the oversize at the under portions of the toe the position of the channel will have to be regulated.

The'molding operation or lasting operation for the box toe piece is preferably done on the machine of my invention, a description of which will be found in Patent No. 1,356,017, granted Oct. 19, 1920, on my ap plication Serial No. 102,981, filed June 10th, 1916, and in another application on improvements on said machine filed by me on June 30th, 1919, Serial No. 307,670. In these machines, the box toe last is set beneath a depressible foot, that not only presses down lirmly 011 the upper side of the too but has a means for enfolding the entire toe and pressing the sides of the box piece around under the toe of the last. In connection with the channel formed beneath the toe portion proper of the toe last, this pressing machine forces the box toe piece into the channel and against the inner wall thereof.

The boxtoe piece for welt shoes (Fig. 1) when pressed or molded over this last has the shape 10 of the desired toe, and an incurving wall or shoulder 11. and downward bend or shoulder 12. Any excess of box niatcrial beyond this shoulder 12 is cut away and the box is ready for insertion over the last along with the upper of the shoe proper. Such a last is shown in section at 13 (Fig. 6) with the outer portion of the upper 1-1, and the inner portion of the upper 15. The box toe piece 10 lies over the toe of the last outside of the lining and the shoulder 12 and lining lie against the lip 10 of the insole 17. This shoulder spacing is brought about by the proper proportioning of the channel in the box toe last.

For shoes, not welt, the box toe piece 20 is cut away so as to merely leave the in 'wardly bending edge or shoulder 21 thereof.

The box is inserted as before, and the insole not having any lip, there is no necessity for the box toe piece to have any corresponding lip or edge, as the shoulder lies on this insole.

In each instance it is important to employ a. box blank which softens by heat or otherwise, and hardens very rapidly, since the molding operation more or less requires such quick action on the part of the box toe piece.

It should be noted that the provision of the underlying channel. is a very important point in connection with my invention herein. IVithout some such means, which, at its base and sides forms an element into which the box toe material can be drawn, it would not be practical to form up a structure having sharp, clean lines at the underfolded portion, and it would be impossible to obtain an effective shoulder for attachment to welt or McKay shoes.

It is desirable that in the use of my toe last there be a 'de for so positioning the said toe last that it will be centered under the stretching or other molding operation. Unless the last is accurately centered under the pressure, the material will not be evenly formed up, and wrinkles will occur.

To serve as a guide to the centering of the said toe last particularly where used with automatic machines, and to serve as a member to seat on a supportin post for the underside of the said last, I rnish a plate 25, which is screwed to the base of the toe last, and has a depression 26, formed on a vertical axial line with the true center of the upper surface of the toe.

Instead of the plate, the material of the last itself could be bored out in a properly located depression or the like, but it is preferable that the plate, as shown, be rovided.

It is believed that further description of the process with which my toe is employed is not necessary, and that its advantages and mode of use have been sufficiently pointed out above.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1. A toe last for molding box toes, comprising a wooden form cut with a toe, whose surface corresponds to the toe of the shoe last in connection with which the molded box toe is to be employed, said toe of the toe last having a body portion with a channel therein directly underlying the said corresponding surface for the purpose described.

2. A last or form to be employed for the pre-shaping of box toe ieces into the shape of a shoe last over whic said toe piece is to be subsequently assembled, comprising a toe formed in the shape of the toe of said shoe last, and means underlying the upper surface of the toe, to provide a channel into which operating parts may find a base and side walls, in the operation of drawing the edges of said toe piece under said toe portion.

3. A last or form to be employed for the pre-shaping of box toe pieces into the shape of a shoe last over which said toe pieces are to be subsequently assembled, comprising a toe formed in the shape of the toe of said shoe last, and a centering means on the under side of the toe approximately on the central axis of the upper surface thereof to serve as a uide in centering the upper surfact of sai toe beneath the pressure of the operations thereon.

4. A last or form to be employed for the pro-shaping of box toe pieces into the shape of a shoe last over which said toe pieces are to be subsequently assembled, comprising a toe formed in the shape of the toe of said shoe last, and a centering means on the under side of the toe to serve as a uide in centering the upper surface of sai toe beneath the pressure of the operations thereon, said means comprisin a metal plate secured to said under side of the toe on the central axis of the upper surface of said toe.

5. A. last or toe form comprising a body portion, a toe portion cut at one end of said body portion, a portion underl ing the toe portion proper, same having a c annel form space between it and the toe portion proper and a centering plate on the under side of said underlying portion having an indicated point thereon which lies in the central, vertical. axis of the toe portion proper.

ALBERT J. RYAN.

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