US1618235A - Lining-trimming machine - Google Patents

Description

. 1,618,235 Feb. 22, 1927. A. c SMITH Lnmle Immune ummm Feb. 22,1927.

A. C. SMITH LINING TRIMMING MACHINE 2 Sheets-Sheet 2 Filed Auer. 14, 1923 Patented Feb. 22, 1927.

UNITED STATES PATENT OFFICE.

ARCHIBALD C. SMITH, F ROCHESTER, NEW YORK, ASSIGNORTO UNITED SHOE HA.- CHDTEBY CORPORATION, 0F PATEBSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

LINING-TBIMMING MACHINE.

Application led August 14, 1923.

This invention relates to trimming machines and is herein illustrated as embodied in a machine designed to trim the linings of shoes.

` In the manufacture of certainkinds of shoes, it is customary to trim olf portiohs of the lining which pro'ect beyond an edge or edges of the upper, t e lining and upper being fastened together by a line of stitches located close to the edge of theupper. These projecting portions of the lining may extend above the top of the upper or beneath'ornamental openings in the upper. In the former case. the projecting lining l5 material commonly remains on the shoe until the shoe is otherwise finished While in the latter case the trimming or severing of the 'lining may be carried out in the stitching room shortl after the upper and lining have have n fastened to ether. There is, however, nothing fixed a out the vprocedure. i

In the manufacture of rubber overshoes,

it is customary rst to fasten the lining about a last or form and then to build the rubber overshoe iecefby piece over the form thus covered. fter the overshoe is finished, the lining which projects above it is slit, and then the overshoes is pulled from the form. l Here again a certain amount of projectn lining must be trimmed off.

A mac ine for performing trimming operations f this generaltype adapted more particulaly to severing the lining which pro'ects above the top of a shoe 1s shown in latent No. 1,406,335, granted u on an application filed in the name of oulton. In that machine there is provided n fiat work-support having a stationary shear member against the vertical face of which a vertically reciprocating knife rubs. Owing to the rapid reciprocation of the knife, this rubbing action tends to heat the knife and thereby to draw its temper. The knife then becomes dull and, instead of making a clean cut, tends to drag the stock between it and the shear member.

According to one feature of the present invention, a rotatable shear member is provided. In the illustrative machine the shear member is a beveled cut-ter which may act also to support or to aid in supporting the work. By providing a rotatable shear member, the liability which formerly ex- Serial No. 657,442.

isted of drawing the temper of the knife is greatly lessened since the shear member turns, as the work is fed over it, and presents a new surface to the rubbing action of the reciprocating knife. The improved construction also facilitates the feeding of the Work and the turning of work when sharply curved edges are encountered, and tends to the production of a cleaner cut.

This and other -features of the invention, including certain details of construction and combinations of parts, will be described as embodied in an illustrative machine and pointed out in the appended claims.

Referring to the accompanyin drawings,

Figure 1 is an end elevation o a machine in which the present invention is embodied, the machine being equipped with a work support which is ada ted more particularl to facilitate the severing of the lining whic projects beyond the edge of the upper at the top of the shoe.

Fig. 2 is a vertical longitudinal section through a. part of the forward end of the machine.

Fig. 3 is a perspective showin more articularly the parts of the mac ine w ich en age the work. 4

`ig. 4 is an elevation on an enlarged scale of the Work-engaging parts, a portion of the top 'of a shoe being shown in process of being operated upon.

The illustrative machine, shown in Figs. 1 to 4, comprises an overhanging arm 5 which, like that of the patented machine, carries all the work-engagin parts. Rotatably mounted in bearings 1n the arm 5 is a driving shaft 7 which may be rotated by an suitable ap lication of power. ConnectedI with this s aft, in a manner which will appear later, is a cutter or knife-bar 9 which is vertically slidable in bearings formed in the overhanging arm, it being understood that rotation of the shaft 7 causes reciprocation of the cutter-bar. Fastened to the lower end of the bar 9 is a cutter or knife the shape of which is best shown in Figs. 3 and 4, said knife comprisin a beveled cutting edge 15 and a guide 1 which is in contact with a portion of the substantially vertical face of 'the rotatable shear cutter 19 at all times during the reciprocation of the knife.

Located adjacent to the cutter is a comupon a small horizontal rod bined gage and guard. This member is right-angled in cross-section and comprises a plate 21 the plane of which is in the line of feed of the work and a plate 121 the lane of which is transverse to the line of eed. The plate 121 guards that side of the cutter which first engages the work, its function being principally to prevent accidental njury to the lingers of the operator. The 10 plate 21 has a beveled lower end adapted to extend into the angle between the lining 10() and the edge of the upper 200 close to the line of stitches 300 by which the two are joined for example, at the top of a leather shoe. This plate acts to separate the lining andthe upper by bending the lining away from the upper, aids in guiding the work by engagement with the edge of the upper and prevents the knife from accidentally injuring the upper. The construction and mounting of this guard and gage member is the same as that of the patented machine, the member being fast to the lower end of a vertical rod 23 the upper end of which is fast to a vertically' slidable block 25, said block having a pin 27 extending into a vertical socket formed in the arm 5 and being acted upon by a compression spring 29 located in the socket. The spring tends at all times to urge the block 25, and with it the guard, downwardly. In order to limit the extent of this downward movement, a setscrew 31 is threaded through a port-ion of the arm 5, and engages the under side of the 35 slide block 29.

When, in the operation of the machine, a seam is encountered, as is frequently the case when trimming the lining which projects from the top of a shoe, it is desirable to lift the guard. T .this end, there is adjustably clamped to the bar 23 a collar 33 having extending from one side thereof a pin 35 with which one arm' of a bell-crank liftin lever 37 may be caused to contact. The gub of this lever is loosely mounted 39 carried by a boss on a bracket 41, this bracket being fastened to the overhanging arm by a cap screw 43 and being in effect a part of said arm. As best shown in Fig. 3, the righthand arm of the bell-crank lever 37,extends beneath the pin 35, so that, when the bent left-hand arm is pressed downwardly or toward the right, the pin is engaged and the guard lifted. A spring 45 having one end coiled about and 'fast to the pin 39 and having the other end extending over one arm of the bell-crank lever, te'nds to hold the lever in the inoperative position shown. An

0 adjustable stop-screw 44 limits the swinging of the bell-crank lever in one direction and consequently the extent to which the guard will be lifted. The purpose of the stop is to prevent the guard from being lifted high enough to permit the upper to move beneath it into the knife.

The work-support comprises the lower portion of the bracket 41 shaped as shown and having rotatably mounted on it the rotary shear member 19 in the form of a beveled cutter having a dished face and a fluted or milled periphery. The latter characteristic aids in the rotation of the shear member by the work, a result which is also facilitated by the fact the the guide 17 of the knife is off center with respect to the vertical median line of the shear member. The dished formation of the face of the shear member lessens the friction between it and the reciprocating knife and tends to the production of a clean cut. The operative surface which supports the superposed upper and lining, as best shown in Fig. 4, comprises the curved upper surface of the extremit of the bracket 41 and the adjacent surfiice of the frusto-conical shear member 19, the two surfaces being continuations one of the other and beinginclined to the vertical plane of the cut of the knife so that the lining is severed on a bevel.

The rotatable shear member, it will be noted, is of comparatively small diameter so that the shoe may be turned on a short radius and the cut caused to progress along sharply curved edges of the upper.

In order to facilitate the presentation and feeding of the-work, there may be provided a presser 47 in the-form of a roll rotatably mounted in a holder 49 which is carried at path of cut of the 'the lower end of a rod 51, said rod being mount d for sliding movement in bearings formed in a cover which is fast to the overhanging arm 5, and urged downwardly by a spring 53. A stop-collar adjustably fastened to the rod limits its downward movement.

In the operation of the machine it is desirable at times to disconnect the reciprocating knife from its driving mechanism and at the same time lift it into a position in which its edge 15 is above the work`so that a new piece of work may be accurately presented to the machine. Carried at the outer end of the shaft 7is a pin 55 which is located eccentrically with respect .to the axis of the shaft. Mounted upon the in is a ball bearing 57, and mounted upon t e bearing is an eccentric strap 59 having pivoted at 61 to an upward extension of it one end of a link 63, the other end of which is pivot` Ved on the smooth portion of the stem of a screw 65 which is carried by the stationary overhanging arm 5. Also pivoted upon this screw is one end of a second link 67, the other end of which is pivoted to the upper end of a short link 69 the lower end of which is pivoted to a block 71 in a socket in whichthe upper end of the knife-bar 9 1s held by a pinch-screw 73. A spring 75,-

coiled about the stem of the screw 65, has bar is raised. This screw 101 serves adjustone of its free ends resting upon the top of the link 67 andthe other free end in contact with the under side of the link 63. The spring thus tends at all times to swing the links about the axis of the screw 65. In order normally to hold them in the relative positions shown so that rotation of the driving shaft will cause reciprocation/ of the knife-bar 9, the upper link 63 has a lug 77 which extends beneath a lug 79 on the lower link 67; and a latch 81 pivoted at 83 to the lower link extends beneath the lug 77. The latch is urged at all times to swing in a clockwise direction by a spring which extends from beneath the lower link, around the 1pivot 83 and up over the tail of the latch. When, now, the shaft 7 is rotated, the link 63 is oscillated about the screw 65; and the same oscillation is imparted to the link 67, since the links are positively held 'from angular movement with respect to each other. The outer end of the link 67 is connected with the knife-bar 9 in the lnanner which has been described, and consequently the knife-bar is reciprocated.

In order to permit the latch to be tripped and the link 67 to be raised and held raised when desired, a rod 87 slidable in vertical bearings in the stationary arm 5 is located below the tail of the latch and has extending from one side thereof and beneath the` 63, 67 apart into the position shown, which` is as far as the lugs 77, 79 will permit; and the spring 85 causes the latch to engage once more the under side of the lug 77. The links 63, 67 are thus once more held positively from angular movement with respect to eac other, and the knife is reciprocated. The rod 87 is raised by means of a lever 91 pivoted at 93 to the stationary arm 5 and aving pivoted to its outer end a treadle rod 95 to the lower end of which a treadle (not shown) is connected. The left-hand end of this lever, as viewed in Fi 2, when swung upwardly, engages the un er side of a pin 97 which is carried by the rod 87. In order to cause the presser 47 to be raised When the knife is raised, the left-hand end of the lever 91 engages beneath a pin 99 carried by the collar 55.

When the knife is raised, it is desirable that the guard 21 should be raised with it. For this reason, the end of the screw 101 (Fig. 1) is located directly below the pin 35 and engages the pin 35 when the knife ably to fasten to the knife-bar 9 the block 103 to which the knife is adjustably fastened by the screws 105.

In trimming the lining which projects beyond the edge of the upper at the top of a shoe, the shoe is so held by the operator that the work-support enters it and permits it to be manipulated in such manner as to sever all of the projecting lining. As viewed in Figs 3 and 4, the Work is fed toward the observer. The member 21 extends into t-hc angle between the lining and the edge of the upper, said upper lining in a leather shoe being fastened together by a row of stitches 300 which are close to the edge ot' the upper. The lining to be severed passes beneath the member 21 while the edge of the upper contacts with one side of it, the lining beng held by the member 21 against the beveled periphery of the shear cutter 19, and the cut being made on a bevel. The shear member, by reason of its rotation, presents a fresh portion to the reciprocating knife at short intervals, thereby lessening the liability of detrimental heating. At the same time it facilitates the feeding of the work, particularly when sharp curves are encountered, and tends to the production of a clean cut.

Althou h the invention has been set forth as embodied in a particular machine, it should be understood that the invention is not limited in the scope of its application to the particular machine which has been shown and described.

Having thus described my invention, what I claim as new and desire to secure by Letters patent of the United States is 1. A machine for severing a portion of the lining pf a shoe which rojects beyond an edge of the upper thereol) having, in combination, a work support adapted to enter the shoe so as to supportl the upper from the inside thereof and to permit the shoe to be moved with respect to it, said work support comprising a rotatable shear member, a lining cutter cooperating with the shear member, and means for operating the cutter.

2. A machine for severing a portion of the lining of a shoe which projects beyond an edge of the upper thereof having, in combination, a Iwork supportadapted to enter the shoe so as to support the upper and lining from the inside of the shoe and to permit the shoe to be moved with respect to it, said work support comprising a rotatable shear member, a coo erating cutter to sever the lining, means or reci rocating the cutter, and a gage located adjacentto the cutter and arranged to contact with the edge of the upper.

3. A machine for severing a portion of the lining of a shoe which rojects beyond an edge of the upper thereof aving, in combination, a work support adapted to enter extend into the angle between the lining and the shoe so as to support the upper and linthe edge of the upper for facilitating the ing from the inside of the shoe and to periding of the shoe m such manner that the mit the shoe to be moved with respect to it. ining is severed close to the edge of the 25 ,sald work support comprising a rotatable upper.

shear member of small diameterhaving a 5. A machine for severing a portion of the dished face, a cooperating lining cutter havlining of a shoe which is fastened to the ing a portion in contact with the margin of upper close to an edge thereof and projects said face, and means for reciprocating' the yond said edge having, in combination, a 30 cutter. work supporting member adapted to enter 4. A machine for severing a portion of the a shoe and to permit the shoe to be moved lining of a shoe which is fastened to the with respect to it, said member having an upper close to an edge thereof and projects inclined rounded portion, a frusto-conical' yond said edge having, in combination, a rotatable shear member of. small diameter 35 work support adapted to enter a shoe so as the conical surface of which is a continuation to support the upper and lining from the of the rounded portion of the work supportinside of the shoe and to permit the shoe ing member, a cooperatin lining cutter, and to be moved -with respectV to it,v said work means for reciprocatingt e cutter.

support comprising arotatablel shear mem- In testimony whereof I have signed my 40 ber of small diameter, a cooperating reciproname to this specification.

cating lining cutter, and a gage arranged to ARCHIBALD C. SMITH.

binaton, a Work support adapted to enter the shoe so as to support the upper and lining from the inside of the shoe and to permit the shoe to be moved with respect to it. said Work support comprising a rotatable shear member of small diameter having a dished face, a cooperating lining cutter having a portion in contact with the margin of said face, and means for reciprocating the cutter.

4. machine for severing a portion of the lining of a shoe which is fastened to the upper close to an edge thereof and projects beyond said edge having, in combination, a

Work support adapted to enter a shoe so as to support the upper and lining from the inside of the shoe and to permit the shoe to be moved Iwith respect. to it, said Work support comprising arotatable shear mem ber of small diameter, a cooperating reciprocating lining cutter, and a gage arranged te extend into the angle between the lining and the edge of the upper for facilitating the guiding of the shoe in such manner that the ining is severed close to the edge of the upper.

5, A machine for severing a portion of the lining of a shoe which is fastened to the upper close to an edge thereof and projects beyond said edge having, in combnation, a Work supporting member adapted to enter a shoe and to permit the shoe to be moved with respect to it, said member having an inclined rounded portion, a truste-conical rotatable shear member of smail diameter the conical surface of which is a continuation of the rounded portieri of the work supporting member, a cooperating Iining cutter, and means for reciprocating the cutter.

In testimony whereof I have signed my name to this specification.

ARCHIBALD C. SMITH.

CERTIFICATE 0F CORRECTION.

Patent No. 1, 618, 235.

Granted February 22, 1927, to

ARCHIBALD C. SMITH.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as foilows: Page 2, line 76, for the article "the" first occurrance read "tiiet"; page strike out lines li to 14, claim 4, and iines 27 to 3ft. claim S. anti insert instead "A machine for severing a portion of the lining oi a shoe which proiects beyond an edge of the upper thereof having. in combination af; and that the said Letters Patent should be read with this correction therein that the same may conform to the record ot the one in the Patent Office.

Signed and seated this 4th tiny of cteber, D. i927.

Seat,

Pei. i. Moore, Acting Commissioner of Patents.

Patent No. LSJBS. Granted February 22, 1927, to

ARCHIBALD C. SMITH.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 76, for the article "the" first occurrance read "that"; page 4, strike out lines l1 to 14, claim 4, and lines 27 to 36, claim 5, an insert instead "A machine for sever- 'ing a portion of the lining of a shoe which projects beyond an edge of the upper thereof having, in combination a"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the cue in the Patent Office.

Signed and sealed this 4th day ci October, A. D. 1927.

M. J. Moore,

Seal.

Acting Commissioner of Patente.

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