US1245594A - Sole-fitting machine. - Google Patents

Description

A. E. JOHNSON.

SOLE vFITTING MACHINE.

APPLICATION FILED JULY 31.19.16.

1 ,245,594. Patented 1w. 6, 1917.

such machines.

- ALBERT E. JorntsoN, or BEVERLY, massacnusnr'rs, AssIenoR To "UNITED SHOE MACHINERY ooMraNY, or ra'rnnson, new air-near; A conrona'rron or NEW JERSEY.

T0 allwhom itmay concern:

Be it known that I, ALBERT E. JOHNSON, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Sole- Fitting Machines; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will'enable others skilled in the art to which it appertains to make and use the same. This invention relates to .sole fitting machines and more particularly to improvements in the sole cutting devices used in In the manufacture shoes, particularly in the higher grades, an operation on the sole known. generally as .shank reducing isperformed. On outsoles this operation provides for a proper fitting at the breast portion of the shoe'and also provides for a thin edge at the shank, thus giving a desired finish to the appearance of the shoe. Such an operation having for one of its objects the production. of a thin edge at the shank of the outsole is called feather edging or shank .skiving. On welt insoles it is also desirable to provide a feather edge at the shank in order to obtain a close fitting shoe at the instep and to this end the feather at the shank has been reduced in thickness usually by means of a separate 1 operation, called. .shank feather beveling Such an operation is, in general, carried out only on grain leather welt insoles known as solid's or regularsj. to distinguish them from'insoles, made from splits orsimilar stock and strengthened by a fabric covering, known as reinforced insoles, although it should be understood that for high grade shoemaking thev shank feather beveling operation is desirable on all insoles where the featheris too thick to permit a close fitting shank.

The object of therpresent invention is to provide improved means for producing a reduced edge on soles, and is especially directed to reducing the feather of an insole.

In carrying out this object it is contemplated to provide an edge slitting knife for forming a lip which will produce, at the same operation, a beveled feather and also, preferably, a lip of even thickness. While it is preferred to employ this novel edge slit setsrmine ivraoriiu nz' Specification of Letters Patent.:

of soles for boots and,

ma med Nov. e, 1917.

Application filed July 31,1916. Seria1No.'11 2,31"7

ting knife in the insole channeling machine for making solid welt insoles illustrated and described in my co-pending application for Letters Patent of the United States Serial No. 694,,8M, filed May 3, 1912, the invention may also be employed in an insole channeling machine for making reinforced insoles,

and for ease, of explanation it will be illustrated herein as applied to the machine for making Economy reinforced insoles illustrated and described in Letters Patent of the United Statesto lVilliam C. Meyer No. 98%,773, dated February 21, 1911.

In the accompanying drawings, therefore, Figure l is an end elevation of the insole channeling machine described and claimed in said patent to lVilliarn (1 Meyer No. 984,773, Fig. 2 is a perspective of a portion of the improved sole cutting may be used inthat machine, or in other channeling machines of such general type, and Fig. 3 is a cross-section of the shank of an insole after it has been operated upon by the machine. r

In the embodiment of the invention illustrated in the drawings, referring first to Fig. 1, the work support 1 with its supporting toggle 5; the four-motion feed plate 6 with its operating cam knife 8- carried by the knife block 9 on the knife slide 10; the presser foot 11; the edge gage 12 operated by the lever 13 through adjustments of the handle 14; and all intermediate operating connections for said parts; all may be, and preferably are,

same in all respects as like parts 1n sa1d pat ent to NVilliam C. Meyer the features of in- The, difference between ention in said patent to and the machine of the present invention resides in the construction and gmode of operation ofthe edge slitting or lip-forming Fig. 2. For the knife having a straight, lipdevices which 7; the channeling the William '0. Meyer feather beveling, -1nstead of slit in a plane parallel to the sole face, and a part 17, arranged oblique to the part 16, for producing an edge slit in a plane oblique tothe-sole face. In other words the cutting edge ofthe edge slitting knife is shaped to produce a lip of even thickness from its root 18 part way across its width and of increased thickness for the remainder of its width. These two parts of the lip are shown at 19 and 20 respectively, Fig. 2.

Those skilled in the art of insole fitting will ,understand that the width of the feather around the forepart of the insole, which .width is controlled :by. t-he adj ustment of the v.edgegage 12, ,is such that while the knife 15 is operating on this portion of the insole only the cutting edge 16 is operative. At .theshank vof the insole, however, the edge gage is withdrawn in order to produce a -.wide featherand this brings the margin of the solezbeneath .the oblique cuttingedge 17 .of the ;k111ife,l5. resulting in the performance of the shank feather beveling operation.

Obviously it is not thickened outer ,margin of the lip which is cut.- from;the feather .bevehand in order that this may be trimmed off, where it is produced throughout the shank, the edge slit- -ting. knife is provided with a third cutting .edgeQl whiclrsevers the hp at the juncture of the-two portions having the even thickness and .the. increased thickness. The knife edge 21 is formed on the end of a knife -s hank;22 seated in ,a .slot formed in the upper face of the shank of the knife 15 and held therein byclamping screws 23. The 10- cation of the slot is such that the cutting edge .21 rest-sabove and just at the apex of the angle formed by the cutting edges 16 feuda After the channeling operation has been completed by a'machine .of the type illustrated ginthe drawings, the insole is provided with ,a channel and channel flap, an edge slit and lip of even thicknes and width, and-a featherbevel-on such portions of the feather-as are wider than the width of the cutting .edge 16, i. e, :the width of the fin- .ishedlip (see Fig. -.From the above description .it .will be understood that the cutting iedges 17and21 are inoperative except when, theedgegage 12 is moved .to a position ;to.pr0duce .a feather which is .wider zthanthe width of thecutting edge 16.

The present ;invention, it will be observed, is peculiarly adapted to a lip-forming knife of the ,plow ,type as illustrated in Fig.2, but

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bination,

desirable to retain the .blnation,

slit and a featherbevel, and a trimming the lip produced by the ,surface parallel to ,the face .edge knife having two cutting .duclng a l p of even thickness throughout and ,a vertically disposed the invention as defined by the appended claims is not limited to this type of knife.

The nature and scope of the present invention having been indicated and ,the'preferred embodiment of the invention having been specifically described, what is.claimed as new is:

'1. A sole fitting machine, having, in com- -work supporting and feeding means, a channel forming knife, and an edge slitting knife having an angular cutting edge for producing an edge slit in planes both parallel and oblique to the face of the sole.

2. A sole fitting machine, having, in combination, work supporting and feedlng means, an edge gage ad ustable across the line of feed, an .edge slitting knife having one portionof its cutting edge arranged oblique to another portion, and means for adjusting said gageduring the feed to utilize one or both ,of said portions as maybe desired.

3 Asole fitting machine, having, in coma knife for forming a channel, a knife for simultaneously forming an edge edge slit. 4. In a sole fittingmachinaah edge slitting knifehaving an angular cutting edge shaped to pr oducea feather having a portion of its of the 'sole and arioutenmargin beveled to a featheredge.

.5. In a sole fitting machine,a combination edgesfor prothe inner portion of its width and of increased thickness throughout the outer por tion of itswidth, and ,a third cutting edge for trimmingofi' the portion of the lip having the increased thickness.

knife for l 6. Inasole fitting machine, a lip forming I knife of the plow typerhaving a horizontally disposed cutting edge formed 10f two por tions lying in planes .oblique -to each other, cutting edge above and intersecting theline of cutofone ofsaid two horizontallydisposed portions.

7 In a .sole fitting machine a lip forming knife with a plow type shank having a for wardcutting edge in two part-sone-of which is bent at an angle to theptlier, and a lip trimming :knife mounted on said shank above said cutting edge at the apeX' of the angle formed by, said two parts.

ALBE T .E. JOHNSON.

"Commissioner of Patents,

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