US448436A - Sole-channeling machine - Google Patents

Description

(No Model.) 4 sheets-snee: 1.

M. L. KEITH. som:v GHAN-NELING MACHINE..

Patented Mar. 17, 1891.

n sus ce., Wmo-mno., mamma n c (No Model.) 4 sheetssheet 2.

M. L. KEITH.

SOLE GHANNBLING MACHINE.

Patented Mar. 17, 1891.

79' F7 55 i, if

(No Modem' 4 Sheets-Sheet 3.

M. L. KEITH.

SOLE GHANNELING MACHINE.

No. 448,436. Patented Mar; 17,1894.

(No Model.) 4 sheets-sheet 4. M. L. KEITH. SOLE GHANNBLING MACHINE.

No. 448,436. Patented Mar. 17, 1891.

. tally,

MYRON LEE KEITH, OF CAMPELLO, MASSACHUSETTS.

SOLE-CHANNELING MACHINE.

SPECIFICATION forming part of Letters Patent No. 448,436, dated March 17, 1891. Application filed December 10, 1890. Serial No. 374,145. (No model.)

To all whom it may concern.-

Be it known that I, MYRON LEE KEITH, of Campello, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Boot or Shoe Soie Channeling Machines, of which the following is a specification.

Thisinvention has for its object to provide improved means for cutting a stitch-receiving channel in the bottom surface of the outer sole of a welted boot or shoe when said sole is in place on the boot or shoe and while the latter is on the last,the invention having for its chief object to enable the said channel to be cut in conformity to the outline of the sole after the latter has been fitted, thus securing absolute uniformity in the distance between the'channel and the trimmed edge formed on the sole by the litting operation. By the term iitting operation i I mean the operation of removing' the surplus material from the edge of the sole after the sole has been applied to the boot or shoe.

The invention consists as a whole ina channeling machine comprising` a jackholder adapted to support a last and a lasted boot or shoe thereon and to permit the revolution of said last about a center or axis and a channeling-tool mounted on a fixed support and movable thereon both vertically and horizon the said tool having a gage adapted to bear on the edge of the sole and determine the distance of the channel from said edge, the channeling-tool being movable in all directions required to enable it to conform to the curvatures of the edges and bottom of a sole, so that during the revolution of the last about the axis of the jack the tool will cut a channel extending entirely around the edge of the sole, the channeling operation being performed before the heel is attached.

The invention also consists in certain improvements relating to a machine organized as above indicated, all of which I will now proceed to describe and claim.

In the accompanying drawings, forming a part of this specilication, Figure l represents a side elevation of a channeling-machine embodying my invention. Fig. :2 represents a perspective view of a portion ofl said machine. Fig. 3 represents a section on line 3 3, F1g.1. Fig. -l represents an enlarged view of the channelingtool and a part of its mov able carrier. Fig. 5 represents a View of another side of the channelingtool, showing the operation of a channel-opening` device there` on. Fig. 6 represents an end elevation, and Fig. a top view, of the machine, showing the jack and lastin a position at right angles to that shown in Fig. 1. Fig. G represents a 6o modification, and Figs. S and'9represent perspective views of different forms of channeling-tools.

The saine letters and figures of reference indicate the same parts in all of the views.

In the drawings, d represents the jack which supports the last b during the operation of channeling the outer sole c of a boot or shoe on said last. The jack may be of any suitable construction, and is here shown as com- 7o posed of a curved bar pivoted at i to ears CZ on a vertical shaft CZ, which is journaled in a bearing c, affixed to a base or support f. The jack is provided with a rest 3 to support the fore part of the last and with a spindle 5, mounted on an adjustable block or standard 4 to enter the socket in the rear portion of the last. At one end of the jack is a roller 7, arranged to run on a track or support g, and above said roller is a handle G, by which the 8o operator can move the jack about the shaft or axis d. The track g is attached by arms g' to the base or support j', and is preferably raised at its ends above its central portion, as shown in Figs. l and 6, so that when the toe portion of the sole is being channeled the heel will be depressed, as shown in Fig. (i, for a purpose hereinafter explained.

t' represents the channeling-knife, which is affixed to a slide or shank i', adapted to move 9o horizontally in a socketed holder j. Said holder j is provi-led with a dovetail shank j', tted to move vertically in a guide in a slide 7c, which is movable horizontally in a directionat right angles to the movement of the shank t" on a dovetail guide-bar Z, said bar being supported by standards Z l', affixed to the base f. The horizontal movements of the shank t" in the holder j permit the knife to Y move in and out to conform to the edge curvau mo turc of the sole c, while the vertical movements of the shankj in the slide 7c permit the knife to move up and down in conformity to the bottom curvature of the sole. The horizontal movements of the slide 7L'. upon the guide-bar Z enable the knife to more along the edge of the sole in the direction of the length thereof when the sole is in the positions indicated by full and dotted lines in Fig. l. The shank 'i' is provided with a gage or rest m, which is adapted to bear on the edge of the sole, said gage being` behind the knife i and determining the distance from the edge of the sole of the cut made by said knife. 'lhe shank t" is pressed forward to hold the gage m with a yielding pressure against the edge of the sole by means of a weight '12 which is connected by a cord n with the shank t', said cord passing through a chan nel iii the shank j and over a pulley o, Fig. 3, in the holderj. The gage or rest m is pivoted at fm' to the shank t" and is engaged with the lower end of a push-pin p, which pin extends upwardly through a hollow handle Q, affixed to the shank t', and is provided with a knob p and with an adjustable nut or stop 122 above said handle. IVhen the pin p is depressed, it depresses and at the same time swings back the gage fm, as shown in Fig. 4, thus increasing the distance between said gage and the knife and permitting the knife to cut the channel farther from the edge of the sole. The gage is normally held in the raised position shown in Figs. 2, 3, and (3 by a spring r, Figs. 2 and 3, in the handle q. [t is desirable to make the channel farther from the edge of the sole at the shank than at other portions of the sole, and the operator is enabled by depressing the pin p to cause the knife to move farther inward from the edge of the sole when the knife reaches the shank portion. The extent of the variation or iiiward deiiection of the channel is determined by the adjustable stop or nut p2, which limits the downward movement of the pin p by striking the handle q, and is engaged with a screwthread on the pin, so that when rotated on the pin it is raised or lowered, as the case maybe. The knife is curved or beveled at its acting portion, so that it makes an undercut slot or channel in the sole, the channel being inclined inwardly from the edge of the sole, as shown in Fig. 4f, this form being known to shoe manufacturers as the English channel.

The form and construction of' the knife may be variously modified.

In Figs. 3, 1i, 5, and 6 I show a simple form of knife composed of a vertical tang 2, attached to the outer end of the shank t" by a screw 3 and provided at its lower end with a beveled cutting-edge 4.

In Fig. S I show an inclined cutting-edge et', which is a continuation of the tang 2, the latter being attached to a shank or holder in an inclined position. In this modification the back of the knife is provided with a lip 5', which acts to open the channel by raising the flap formed by the cutting-edge.

In Fig. 9 the tang 2 is inclined, as in Fig. S, and the cutting-edge 4 is in the same plane as the tang; but the channel-opening device kat other portions.

is a lip formed on a separate piece 6', 'attached to the holder.

The knife shown in Figs. 3, 4, 5, and G has no channel-opening device, and when said knife is employed I make use of a channelopener t, attached to the under side of the shank t" and formed at one end to enter the channel and open the saine, as shown in Fig. 5.

In operating this machine I take a boot or Ashoe the outer sole of which has been temporarily secured to the upper by glue or c ement and has been trimmed after its application to the boot or shoe, the form of the trimmed edge being determined by the edge of the inner sole and the portion of the upper covering said edge, as described in another application for Letters Patent of the United States for improvement in sole-edge-trimming machines tiled by me concurrently with this application. Said boot or shoe being on the last, I secure it to the jack a in the manner shown, and then after moving the Jack and the channeling-knife to the positions shown in full lines in Fig. l I present the knife to the face of the sole and .commence cutting the channel, the commencement being preferably at the rear portion of the shank. The knife is moved by the operator in the direction indicated by the arrow in Fig. l until it reaches the side portion of the toe. At this point the jack is turned end for end on its axis, or, in other words, from the full-line to the dotted-line position shown in Fig. 1. During this swinging movement the knife remains nearly at rest, the movement of the sole being nearly sufficient to cause the knife to cut the channel around the toe. 'Vhen the jack reaches the dottedline position, the progressive motion of the knife is continued until it reaches the rear portion of the shank at a point opposite the point of beginning. This completes the cutting of the channel, after which the knife is raised and moved forward until the channelopener enters the channel, as shown in Fig. 5. The knife-supporting devices are then moved in the opposite direction until the channel-opener reaches the side portion of the toe, when the operator swings the jack back to the full-line position, the channel-opener passing through the toe portion of the channel during the swinging movement, and then moving back to the starting-point of the knife through the remaining portion of the channel. The inclination of the track g is such as that the heel portion of the sole is depressed when the channel is being cut in the toe, as shown in Fig. 6. rI`he object of this arrangement is to prevent the inclined knife from cutting too deeply or too nearly in a vertical direction in making the toe portion of the channel, the depression of the heel compensating for the inclination of the toe portion of the face of the sole, so that the channel has the same form at the vtoe as My invention is not lim- IOO IIO

f to bear on the edge of an outer sole, whereby ited,however, to the centrally-depressed track, and said track may be made of any other suitable form.

The several movements which the channeling-tool is permitted to make-viz., the horizontal movements adapting it to the edge curves of the sole, the vertical movements adapting it to the bottom curves of the sole, and the progressive movements along the fixed guide-bar adapting it to move along the edge of the sole-may be termed a compound movement.

So far as I am aware I am the iirst to mount a channeling-tool upon a fixed guide or su pport, such as the bar Z, so that it has the described compound movement, and I do not, therefore, limit myself to the described cornbination of devices which permit said movement, ity being obvious that various other mechanical devices may be adopted to so connect the channeling-knife with the fixed guide or support as that it can move horizontally at right angles to said support as well as vertically While moving in the direction of the length of said support.

I find in practice that the improved jack herein shown and described may be used in connection with a channeling-tool held and presented to the sole wholly bythe operators hand, the described mechanism for supporting the channeling-tool being omitted. Hence I do not limit myself in all cases to the use of the knife supporting and guiding devices, although I regard an organized machine including both t-he jack and the knife supporting and guiding devices as preferable to the jack used with a loose channeling-tool held only by the operators hand.

In Fig. 6 I show the channeling-tool as it may be constructed to be held only by the operators hand.

I claiml. Achannelingknife or tool having a compound `rectilin ear movement, substantially as described, and provided with a rest or gage having a substantially flat outer end arranged the knife is adapted to move progressively along a boot or shoe sole and to conform to the edge and bottom curves thereof, combined With a swinging jack adapted to support a lasted boot or shoe in different positions for the action of said tool upon the outer sole, as set forth. l

2. The combination of a fixed support or guide, a slide engaged with said guide and adapted thereby to move horizontally in a rectilinear direction, a tool-holder engaged with vertical guides on said slide and thereby l adapted to more vertically, a tool-carrying shank engaged with horizontal guides arranged on said holder and extending in a direction at right angles to the movement of the slide, said shank being provided with a channeling-knife, and a swinging jack adapted to support a lasted upper in different positions for the action of said tool upon the outer sole, as set forth.

3. The combination of a iixed support or guide, a slide engaged with said guide and adapted thereby to move horizontally in a rectilinear direction, a tool-holder engaged with vertical guides on said slide and thereby adapted to move vertically, a tool-carrying shank engaged with horizontal guides arranged on said holder and extending in a direction at right angles to the movement of the slide, said shank being provided with a channeling-knife, a VerticalaXis or shaft journaled in a fixed bearing, a jack pivotedl to said shaft and adapted to swing horizontally by the rotation of the shaft and vertically by its pivotal connection therewith, last-supporting devices on the jack, and a jack-supporting track depressed between its ends, whereby the heel portion of the last is depressed when the jack is in position to present the toe portion of an outer sole thereon to the channeling-tool, as set forth.

e. The combination of a fixed supportingguide, a knife-carrying shank having a oompound movement thereon, as described, and provided with a channeling-knife, a sole-edge rest or gage pivoted to said shank, a push-pin whereby the operator may depress and retract the said rest or gage, and aspring Whereby the rest is normally raised and held at its forward position, as set forth.

5. The combination of a fixed supportingguide, a jack mounted to swing on a shaft or pivot beside said guide and midway between the ends thereof, said jack being adapted to stand beside the guide with either side toward the guide, a slide 7s, adapted to move lengthwise on the guide, and a knife-carrying shank having a compound movement on said slide, whereby theknife is enabled while moving with the slide along aboot or shoe sole to conform to the edge and bottom curves of said sole, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, this 29th day of November, A. D. 1890.

MYRON LEE KEITH.

Vitnesses:

C. F. BROWN, A. D. HARRIsoN.

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