US1415967A - Lining-trimming machine - Google Patents

Description

.Mi W- WHITE.

LINING TRIMMING MACHINE. APPLICATION HLED AUG-1,1915% RENEWED AUG- 19, 321- 1,415,967. Patented May 16, 1922.,

M. W. WHITE.

LINING TRIMMING MACHINE. APPLICATIONFILED AUG-1.1919.

RENEWED AUG-19,1921.

2 SHEETS-SHEET 2.

Patented May 16 1922",

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MELBOURNE w. WHITE, or LYNN, MASSACHUSETTS, Assrenca 'ro UNITED siren mommy CORPORATION, or PATERSON. new JERSEY, a conr onarron or NEW JERSEY.

LINING-TRIMMING MACHINE.

Specification of Letters Patent. Patented lflay 16, 1922 Application filed August 1, 1919, Serial No. 314,698. vRenewed August 19, 1921. Serial No. 493,700.

' To all whom it may concern:

Be it known that I, MELBonR'NE W. WHITE, a citizen of the United States, residing at Lynn, inthe county of Essex and State of Massachusetts, have invented certain Improvements in Lining-Trimming Machines, of which the following description, in connection with the accompanying draw ings, is aspecification, like reference characters on the drawings indicating'like parts in the several figures.

This invention relates to cutting machines and is herein illustrhted as embodied; in a machine designed to trim the lining which projects from the top of a shoe.

In the manufacture of certain kinds of g footwear, such for example as pumps and rubber overshoes, it is customary to provide a lining which projects more or less above the upper edge of the piece. In the case of umps, the lining is commonly one of eather, and the projecting portion is tacked to a last. In the case of rubber overshoes, a fabric lining is commonly drawnover the top of a form. In either casethe lining fits snugly about the last or form and serves to prevent the upper edge of the piece of footwear from bulging away from the last or. form, particularly at the arch portlon thereof. After all the operations which are to be performed while the piece of footwear is on its last or form have been completed, the piece is removed, and the projecting portion of the lining trimmed ofi'.

Machines which have been provided for performing this operation have been found more satisfactory in operating upon pumps, said machines comprising a cutter to which the pump is fed by hand, the pump being grasped and pushed forward in proper relation to the cutter. A shoe of'this kind is comparatively rigid, the curves in 1ts upper edge are commonly not abrupt and the leather lining is comparatively stiff, so that the procedure outlined above is perfectly practicable. With a rubber oversh oe'such a procedure istnotso satisfactory owing to the extreme flexibility of rubber and to'the fact that very sharply curved edges are frequently encountered. To push a rubber overshoe forward against a cutterus practically impossible, and to pull it is ob ectionable because of the facility with which rubber is stretched. It is also diflicult to guide such a piece of work and at the same time feed it.

taking place but leaves the operator free to concentrate all his effort and attention on the proper guiding of the world,

In trimming such a projecting lining as has been referred to above, the entire upper edge of the shoe is fed over the support, the shoe being turned and swung in various directions during the operation. In order to provide space for such movements of the shoe, another feature of the invention relates to the mounting of the instrumentalities which engage the shoe, including the support, the cutter and the feeding means upon an overhanging arm so that a free and unobstructed space is provided about these members in which the shoe may readily be manipulated.

These and other features of the invention,

including certain details of construction and combinations of partswill be described as embodied in an illustrative machine and pointed out in the appended claims.

Referring now to the accompanying drawings,

Fig. 1 is an elevation of a. machine in which the present invention is embodied;

Fig. 2 is a vertical longitudinal section on the line 22 of. Fig. 3; i

Fig. .3 is a section on the line 3-3 of Fi 2 Fig. 4 is a section on the line 4-4: of Fig. 3, and

Fig. 5 is a section on theline 5-5 of Fig. 1.

Referring first to Figs. 1 and 5, the base 7 of the machine is provided at one end with casters 9 so that by tipping the machine slightly it may be readily moved from place to place in the factory such a capability be ing especially desirable in a factory in which rubber footwear is being made. The base, near the end at which the casters are located, has an upright socket to receive a pedestal 11 which has a series of holes 18 in any one mounted the instrumentalities forengaging. the work; and on the base 7 below the seat) of which may be placed apin 15, the socket being split and having lugs to receive pinchbolts 17. The pedestal may thus be held in adjusted position.- Near the end of the base remote from the casters is a second upright socket in which is mounted m a manner like that of the pedestal 11, a smaller pedestal 18 having at ts upper end a seat 19. At the upper end of the pedestal 11 is an overhanging arm 21 at the outer end of which are 19 are two treadles 23 and 25 which are connected with cables 27 and 29, the cable 27 running over an idler 31 and being connected at its upper end to a presser-lifting lever .33, and the cable 29 running over an idler 35 and being connected at its upper end to a lever 37 which. controls a friction clutch. Any suitable clutch mechanism may be'used, and the present one will not be described further than to saythat depression of the treadle 25 pulls the left-hand end of the lever 37 downwardly against the force of the spring 39 and connects the driving shaft,

presently to be referred to, with a continuously driven pulley 41 on the. shaft of a motor 43. With this construction it is pos-. sible to adjust the machine to the stature. of the operator and to move it aboutin'the factory. In the manufacture of rubber over shoes, it is commonly'the custom to pile the over-shoes, which have been removed from the vulcanizer, on long tables; and the present machine is particularly designed to be moved from place to place along these i tables.

Referring now more particularly to the remaining figures, a driving shaft 45 is mounted in theoverhanging arm and has at itsv outer end .a cam 47, from which, as will presently appear, the feed member and cutter are operated. Extending from the lower portion of the downwardly. turned end of the arm 21 is a bracket 49 to the lower end of which is fastened a work support 51, the fastening consistingof a screw 53 extending a through a slot in the support and threaded support. The feed member is adjustably fastened to a lever 59 by a cap screw 61 which passes througha slot in the feed member and is threaded into the lever. This lever at its upper'end is hung on the cam 47 .and between its ends has a hub through which extends a pivot pin 63. The pin has an enlarged head at its'left-hand end, as viewed in Fig. 2, formed with a bore extending vertlca-ll through it, and inthis bore is adjustably astened, by set screw 65, the

'stem of a knife-holder 67, this stem passing up through alined bores formed in a plate Or cover 69 which is fastened to the overhangingv arm 21 by screws 71. As best shown in Fig. 3, the u per end of the lever 59 is generally L-shapetl and the arms of the L are connected by an angle-iron 73, the whole forming a sort of box in which the cam 47 is located. When, therefore, the shaft 45 is rotated, the lever is both oscillated about the pivot 63 and moved up and down with said pivot, such movements imparting: to the feed member 57 a four-motion feed movement to feed the work intermittently over the support.

At the lower end of the knife holder is fastened a knife located to co-operate with the shear blade .55, and held from springin away from the blade by a leafspring 7 It will "now be seen that by loosening the screw 53, the work support,

and with it the shear blade, may be adjusted to bring the shear blade into proper position with respect to the knife. It has been explained above that the stem of the knifeholder 67 serves as a guide for the vertical movement of the pivot pin 63. In performing this function it is of course reciprocated; and the construction and arrangement of parts is such that'the knife is brought down to sever the work during the pauses in the intermittent feed movements. As an additional guide for the vertical movement of the pivot pin 63 a roller 78, carried at oneend of the pin, runs between guides formed in the down-turned portion of the arm 21.

In order to hold the work upon the work support so as to permit it to be fed properly,

an idle presser wheel 79 is rotatably mounted on an arm 81 and held in place by a nut and washer. This wheel is preferably made of soapstone to prevent the work from sticking to it and thereby interfering with the feed. By referring to Fig. 4 it will be seen that the feed member 57 engages the lining 100 and that the presser engages the rubber 200. Rubber overshoes, as has been mentioned, are vulcanized in the course of their manufacture, and for some time after they come out of the vulcanizer are warm enough to be sticky. lVhile in this condition a steel presser wheel will stick to them more or less, but by using a soapstone wheel this tendency to stick is avoided. The flat face of the presser wheel which is nearest the knife may in some cases serve, by engagement with the underside of the bead 300, as a guide for the work. In the piece of work shown In Fig. 4, the head is too narrow to permit the flat face of the presser wheel which is shown to be so used. ln order to facilitate guiding of .the I work irrespective of .the ,widthof the head, the lower end of the arm 81 is, formed as a gage 83 which extends over into engagement with i the upper side of the bead.- .It is desirable at times to swing the presser and gage up out, of the way}; and to permit such swinging the upper'end of the arm 81 is pivoted at 85 between the-arms of a yoke 87, theupper end of the arm having formed therein two notches about ninety degrees apart with lower end of the nut and a shoulder on the stem is a coiled spring- 95 which holds the presser down against the work. In order to facilitate raising of the press'er when de: sired, a horizontal stud 97 carried by the stem of the yoke 87 is engaged on its under side by a'lifter in the form of a ,lever.99 which is pivoted to the overhanging armat 101, and is attached at itsremote end to the lever in the position shown.

cable 27. A spring 103 normally holds the When the pedestal is raised or lowered the cables 27, 29

. may be lengthened or shortened by readjust ing the clamps 105. v

The rubber overshoes as they come to this machine have been removed from the last or form, this removal havingbeen preceded by slitting the projecting lining, usually at the back of the overshoe, from the upper edge of the overshoe through the top of the lining.

The operator takes theovershoe in this condition, depresses the treadle 23 to permit the upper margin of the overshoe to be placed properly on the support 51 with the gage 83 in contact with the upper side of the bead 300. He then releases the treadle 23, de-

presses the treadle 25 to start the machine,

and guides the work as it is fed. I

. Although the invention has been described with reference to trimming the projecting lining of rubber'footwear and as embodied in a particular machine, it should be understood that the invention is not limited in the wscope of its application to any particular kind of work or to the machine which has been shown and described.

In order to promote brevity, the word shoe, as used in the appended claims, is

' intended to cover broadly various kinds of Havi ngthus described my invention, what I claim as new and desire to secure by Letters Patent of'the Unted States is:

1. A machine for trimming the lining which projects from the top of a shoe, having in combination, a support for the upper edge of the shoe, means for feeding the upper ed e over'the support, and means for severing the lining close to said edge.

2 A machine for trimming the, lining which projects from the top of a shoe, having in combination, a support for the upper edge of the shoe, means for feeding the upper edge intermittently over the support, and meanswfor severing the lining close to said edge.

3 A machine for trimming the lining which pro ects from the top of a shoe,having in combination, a support adapted to enter.

the shoe so as to support the upper edge thereof, a cutter, means for operating t e cutter to sever the lining on an angle to the operative face of the support, and means for feeding the upper edge of the shoe over the support.

A machine I for trimming the lining whlch ro ects from the top o-f-ashoe, having in com ination, a support adapted to enter the shoe so as to support the upperand lining at the top of the shoe, said support having a shear-b1ade,a cutter, means for causing the cutter to co-operate with the shear blade to sever the lining, means for. guiding the top of the shoe-in such manner as to bring thelinin into the path of the cutter at a locality c ose to the edge of the upper, and means for feeding the topof the shoe over the support.

5. 'A machine for trimming the lining which projects from the top of a shoe, having in combination, a support for the shoe, a cutter, means for operating the cutter to sever the lining, a feed member adapted to engage the lining a presser co-operating with the feed. member, means for guiding the top. of the shoe in such manner as to bring the lining into the path of the cutter at a locality close to the edge of the upper. and means for operating the feed member to advance the lining to the cutter.

6. A machine for trimming the lining which projects from the top of a shoe, having in combination, a support for the shoe, a

cutter,.means foroperating the cutter to sever'the lining, a feed member projecting through the support into engagement with the lining, a presser co-operating with the feed member, means for guiding the top of theshoe in such manner as to bring the lining into the path of the cutter at a localityclose,

to the edge of the up er, and means or operating the feed mem er to advance the lining to the cutter.

7. A machine which projects from the top of ashoe,having for trimming the lining in combination, a supp shaped to enter the shoe and to support the upper margin thereof, a presser for holding" the upper edge of the shoe against the support, a cutter, means for causing the cutter to sever the'linin a uide arran ed to en a e the ed e of D, 5 g g to the edge of the upper, and means for feeding the u er margin of the shoe intermittently over the support to present the projecting lining to the cutter. v

9. A machine for trimming the iining which projects from the top of'a shoe, having in combination, a support shaped to enter the shoe and to supporu the upper margin thereof, said'support having a shear blade, presser ior holding the upper marginof the shoe against the support, a guide for the top of the upper, means "for causing the cutter to co-operate with the shear blade to sever the lining, and means for feeding the upper margin of the shoe over the support.

10. A machine of the class described, having in combination, an overhan ing arm, having a depending portion, a won. support, a presser, a cutter and a feed member all mounted on the depending portion of the arm, and mean for operating the cutter and feed member. 7 v

11. A machine of the class described, having in combination, a frame havin an overhanging arm provided with a epending portion, a work support mounted on the depending portion, a feed member mounted on the depending portion-andarranged to'en gage the under side of the work, a resser and a cutter also mounted on the de ending portion, and means for operating t e feed member and cutter.

12. A machine of the class described, having in combination, a work support, feeding means including a carrier movable toward and from the support, and a kniie-holder mounted in the carrier.

13. A machine of the'class described, having in combination, a work support, a feed member, a carrier upon which the feed'memher is pivoted, means reciprocating the carrier and for swinging the reed member about the pivot, and a hnife-hoider fast to the carrier.

14. A i' achine of des'" ing in cc. ination, work member. a carrier up mince-r" carrier and for swinging the feed member about the pivot, and a knife holder fast to the carrier, the knife holder serving to guide the carrier in its reciprocating movement.

15. In a machine for trimming the lining which projects from the top of a shoe, having in combination, a work support, a cutter, and a shear bisde mounted on the work support in position to co-operatewith thccutter, said work support being adjustable to maintain the proper relation between the cutter and sheer blade.

16. A. for trimming the lining which projects from the top of a shoe, havin combination, a work support, a cutter, and a shear blade mounted on the work support in position to co-operate with the cutter, said work support being adjustable to maintain the proper relation between the cutter and shear blade, a feed member extending up through the support adjacent to the shear blade, and means for operating the feed member.

17. A machine for trimming the lining which projects from the top of a shoe, having in combination, a support for the upper edge of the shoe, a cutter for severing the iiuing, a presser co-operating with the support, a gage for the upper of the shoe, and a bracketupon which both the presser and the gage are mounted.

18. A machine for trimming the lining which projects from the top of a shoe, having in combination, a support for the upper edge of the shoe, a cutter for severing the lining, a presser co-operating with the support, a gage for the upper of the shoe, and a bracket upon which both the. presser and the gage are mounted, said bracket being pivoted on the frame 'of the machine to permit the presser and gage to be swung together out of the field of operation.

19. A machine for trimming the lining which projects from the top of a shoe, having in combination, a support for the upper 11c edge of the shoe, a cutter for severing the lining, a prosser co-operating with the support, a gage for the upper of the shoe, a bracket upon'which both the presser and gage are mountechand means for raising and lowering the bracket to facilitate presentation of the work to the machine.

20. A machine of the ciass described, havin combination, a work support, a tool for operating upon the work, a presscr for 1:20 holding the work on the support, an edge gage, abruclret on which the presser and the are mounted, a carrier to which the bracket is pivoted, and means for raising and, lowering the carrier.

'21. A niacin-e for trimming the lining which pro}' s from the top of a rubber :iershoc, having in combination, a support upted to e tea the sli e, a cutter for sevthe footing lin moans tor no feeding the top of the shoe over the support, said means including a feed member adapted to engage the lining near the top of the shoe and a soapstone presser adapted to engage the rubber at a locality opposite to the cality in the lining which 13 engaged by the feed member.

22. A machine for trimming the lining which projects from the top of a shoe, hav- 10 ingin combination, a support for the upper edge of a shoe, a cutter, means for causing the cutter to move in a path which is inclined to the surface of the support, and means for feeding the top of the shoe and ing in combination, a support for the upper edge of a shoe, a cutter, means for operating the cutter, and means for feeding the top of the shoe and for guiding it in such manner that the lining is severed on an angle close to the edge of the upper.

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

MELBOURNE W. WHITE.

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