US1158681A - Trimming-machine. - Google Patents

Description

J. B. HADAWAY.

TRIMMING MACHINE.

APPLICATION FILE-D MAY 3. 1913.

Patented Nov. 2, 1915.

VM/TA/ESSES M .iM J %2 Q @A Flgli Z7 45 f citizen of the United States, residing atv I nection with the accomfianvin drawin s. is V u a: a i

sraTE ATEYN? QFFEGE.

JOHN B. HADAWAY, or swaivrrscor r,'iuessecnusnrrs, assisnonro um'rnn snon amonmnav columna or irarnnson, New JnnsEY, accnroieerron or new JERSEY. 1,158,681. a

To. all who m z'z fi may concern. Be it known that 1, JOHN B. HADAWAY, a

Swampscott, in the county of Essex and State of Massachusetts, have invented certain Improvements in Trimming-Machines, of which the following description; in cona specification, likereference' characters on the drawings indicating like parts in the several figures. l

This invention trimmingthe edges of sheet material, and

, tom of a last before the upper is secured I thereto, it is importantthat the edges of the insole should lie flush with the edges of the bottom of the last, especially at the fore-. part and heel, in order to insure a nice fit for the upper in the pulling over and last- 1 channeled and the channel lip or flap is,

" ing operation and provide a comfortable shoe of the desired shape andsize. The insole is therefore cut to fit the last accurately; but prior to its attachment. to the lastit is turned back. The lip turningoperation, and

sometimes also the channeling operation, is performed while the insole 1s n a dampened or tempered condition, and the effect is usually to stretch the insole lengthwise, so

that-when it is fitted accurately to the last at the forepart it will nearly always project somewhat at the heel end. It is impracticable to allow for this stretching in cutting out the blank, since the effect varies greatly with different grades-of stock and with different degrees of temper. To remedy the 'difiiculty it has been customary toft'ri n off the projecting portion at the heelend with a hand knife; This expedient has been unsatisfactory for the reason that the operation is slow and the results are not uniform. Furthermore, in order to insure a better'fit for the upper ,materials, particularly if W molded counter is to be HS( l,2i/h edges of the nso e at the heel end should be beveled relates to machinesffor TRIMMINGLMACHINE, f

so as to'provide-a rounded surface over which the upper and counter. may' be lasted;

and hand workmen cannot be depended upon totake the pains to shape the insole in this manner.

The present invention provides a machine which, while capable of other uses, is particularly adapted to perform the trimming operationabove described and secure uniform and accurate results. The machine comprises a driven cutter, preferably of the rotarytyp'e, and guiding means upon which to position thelast so that the cutter will trim the insole accurately with reference to the lateral surfaces of the last. In the preferred embodiment of the invention the guiding means is so arranged in relation to the cutter that the latter will cut through the" insole in the general direction of the height of the last or in a direction from one face to the other of the insole, means being also provided for supporting the edge of the insole in the path of the cutter and arranged with reference to the cutter to act as a shearing member in cotiperation therewith. Such a machine will make a clean cut on the edge, and has also the important advantage of performing the trimming operation without any tendency to stretch or otherwise distort theinsole upon the last through the action of the cutter.

Another important object of the invention is so to arrange the cutter and guide, while maintained in the above described relation, that thelast may present the insole in a substantially vertical plane during the trimming operation, which enables the workman readilyto observe the efiect'of the cutter and to manipulate the last with facility and accuracy.

' Further features reside in means for positioning the last and insole with reference to the cutter so as to secure the desired de gree of bevel upon the edge of the insole, and in means whereby the workman is enabled to manipulate the last so as to trim inward farther toward the lateral surface thereof at certain stages of the trimming operation; p

. The preferred embodiment also includes provision for ad ustment of varlous. parts of the machine, particularly with a view to yarying the depth, of cut of thetrimming atented News, was. hpplication filed May 3,1913. Serial naveaeeo. 3

operation with reference to the lateral surfaces of the, last and varying the degree of bevel. j

' Other and more particular features and objectsof the-inventionwill appear from the following detailed description.

In the accompanying drawings which i illustrate a preferred embodiment of the invention; Figure 1- is a side elevation of thenupper portion of the machine; Fig. 2' is a perspective view showing the front of the upper portion of the machine, a part of the cover over the cutter being broken away;

1 V Fig. 3 is a section on the line; iii-f Fig. 1 15 which is inclined somewhat from the vertical toward the front of the machine for a purpose to be subsequently .explainedfand 'is driven by a belt 8 from a suitable source [of power, ,Secured upon the upper end .of

the shaft is a cutterlO which'isj frustoconical in form and tapers toward its upper,

end so that a line across the periphery of the cutter in the plane of the shaft at the front of the machine is substantially verti cal. The cutter has cutting edges that extend across its periphery from endIto end and are inclined to radial planes so as to have a shearlng actlon on the stock. In the A drawings the cutter is shown as arranged for rotation in a counter-clockwise direction, but it will be obvious that as ,faras concerns many features of the invention the Y direction of rotation ofthe cutter is immateria'l and that it is within the province of the invention to employ a cutter arranged for rotation in the opposite direction.

The upper surface of the support 4 is inclined downwardly toward the front of the machine, and is provided with guideways 12 and 14 that receive downwardly projecting tongues formed respectively on bracket members 16 and 18. These members are adjustable up and down the guideways and are provided with bolts 20 and 22 respectively to clamp them securely to the support in their adjusted positions. The bracket 16 carries at'the front a plate 24 provided with a curved portion 26 that is shaped to conform substantially to the periphery of the cutter andhas at its forward end a lip 28 formed to project between the bottom surface of alast and the insole attached there to. The lip 28 thus serves as a guide upon which to position the bottom surface of the last in the operation of the, machine, as well as to protect the last from the action of the cutterand the member 26 is shaped toserve the same purpose forthe lateral surfaces of v ,7 the last so as to presentthe insole with'its edge transverse to the periphery of the cutter or, in other words, transverse to the dilast and 32 an insole attached to the last and in position to be trimmed. By adjust- 'ment 'of the bracket 16? in the guideway 12 the position of the guide. 26 with reference to the cutter may be varied,fwhich obviously U will serve to vary the extent of the trimming action-of-the cutter withreference to: the

lateral surfaces of the last. The plate 24 is also adjustable endwise on the bracket 16 l and is held in adjusted position by means of a clamp 34. Thepurpose of, this adjust-V V ment of the plate Will -be subsequently eX- plained] A Carried by the brackiit 18 is aplatel 86; a

cutter to, provide a support for the bottom face of the insole near its edge andtoserve. as a shearing memberln-cooperation. with I which is shaped at'its end adjaeentto the" the edges of the cutter. Theiplatel'in order to perform its function effectively," should bellocatcd closely adjacent to the periphery ofthe cutter, and adjustmentof the plate in this respect is effected'by adj ustment @of "the bracket 18 in the guideway 14. The plate maythus be brought nearer to thecutter as the latter wears away and consequentlydeicreases in diameter.- The plate 36 is also adjustable endwise in relation to'the bracket 18, and ascrew 38 is provided to limitand determine its position in thisfrespect. The

plate 36 is held-in position by the clamping effect of a bracket member 40 which is se cured upon the front of the braeket18. This member is provided with a socket in which is mounted a plunger '42 that is shapedat its forward end to serve as anadditional rest for the work and hasa rearward e'xtension 44 that slides freely through the bracket. A spring-"'46 tends to urge the plunger forwardly towardthe work; and a nut 48 threaded adjustably upon the exten- 1 si on 44 serves to limit the extent of movement of the'plungerL v The parts thus far described provide a casing around the side and bottom portions of the cutter, and a shield 50 attached to the member 18 incloses the cutter at the top, thus serving to retain the chips and dust;

while the member 18 is shaped to provide a conduit 52 that leads to a suction fan or similar device commonlyused with this class ofmachines. V I .7

In the operation of the machine; the workman takes a last upon the bottom ofwhich forward is attachedan insole, and presents theinsole to the cutterby' resting the lateral and bottom surfaces of the last respectively upon the, last. 7 z V V curved somewhat toward the edges of the heelseat and theinsole usually' attached to the guides 26andv28 w1th the l1p'28 pro- 7 j ecting between'theinsole and the bottom of n c Since. the bottom of'the last is;

the heel portion of the lastby a single tack near the centerof theheel seat, the lip- 28 may be inserted without bendingthe insole the work. I This will depend, ofcourse, principally upon thethickness of the stock, and

also to some extentupon the position of the V plungerA-2, which serves as a supplemental rest for the insole and last and determines, as will beevident' from an inspection of Fig. 3, the-angle of the face of the work with .reference to the cutter and consequently the degree of bevel formedupon the edge.

With the workpositioned as described, the operator turns thelast, keeping the latter in contact with the guides 26 and 28, and the insole also in contact with the'rest 42,. so as to present all portions of the edge of the heel seat to theaction of the cutter. He may begin the operation at the rear of the heel, and trim in both directions therefrom toward the shank, or may, as is usual, begin at one side and trim around the heel to the other side. In either case it is advantageous and usually necessary, in order to cut inward to the extent required when trimming at the side of the heel'seat near the shank, to depress the plunger 42 somewhat when trimming at these points and turn the last-about its longitudinal axis, thereby projecting the insole farther toward the cutter. This serves at the same time to produce a longer bevel at the edges near the shank portion, which is a desirable feature, since the insole is often beveled in this manner by a special operation in order to secure a better fitfor the upper. With the shaft arranged, as shown,

' the operator is enabled to turn the last in a substantially vertical plane, which is advantageous in respect to'facility in handling the last and. to convenience in inspecting the work. The forward inclination of the shaft providesspace for the last to be turned.

downward to the necessary extent without interfering with any portion of the framework of the machine, while at the same time, in view of the peripheral shape of the cutter head the last will'be substantially in a horizontal position when the cutter is operating at the rear of the heel, and the necessary turning movement will carry the last equal distances above and'below the horizontal.

Either of the plates 24 and 36, or both, may be adjusted to provide the proper space for the insertionof the insole. It is usually preferable, however, first to secure the plate 36 in proper position with reference to the cutter to perform efiectively'its function as a shearing member and to make subsequent adplstments of the plate 24 with reference thereto. T he nut 48 will be turned so as to driven cutter,

the trimming operation will be effected smoothly and accurately, and a bevel will be formed on the ed e without special. attention on the part of the operator. With the cut ter operating in the described manner there will be no tendency to twist the blank on thelast and consequently to cut inward too far in some portion, and the arrangementof the shearing member in cooperation with the cutter assures a clean out without any tendency to leave the edges ragged.

Although 'I have disclosed my invention as embodied in a machine having the particular described features of construction, it will be understood that it is not limited to these precise details but that other embodiments are comprehended within the spirit and scope thereof as defined in the claims.

I Having described my invention what I claim as new and desire to secure by Letters Patent of the United States is the fol lowing 1. A tached to the bottom of a last comprising a and means upon which to position both the lateral and bottom surfaces of the last to present the insole in operative relation to the cutter, said means being arranged with reference to the cutter to cause the cutter to cut through the insole substantially in the direction of the height of the last and including a device constructed to extend between the bottom surface of the last and the insole and of such length and thickness as to hold the insole away from the last and prevent interference between the last and the cutter.

A machine for trimming an insole at tached to the bottom of a last comprising a rotary cutter, and guiding means upon which to positionthe lateral and bottom surfaces of the last so as to present the in sole with its edge transverse to the periphery of the cutter, said means being ad 'ust able toward and from the periphery of the cutter. so as to vary the depth of the cut with reference to the lateral surfaces of the last.

3. A machine for trimming an insole attached to the bottom of alast comprising a rotary cutter, guiding means upon which to position the lateral. surfaces of the last to present the insole to the action of the cutter, additional means cooperating with said guiding means to protect the last from conmachine for trinnning an insole at-' tact with the cutter, and means for support ing the insole in the pathof the cutter, all

of said means being so arranged with reference to the cutter that it cuts through the insole in a direction from one face tov the other thereof. i

4. A machine for trimming an insole attached tothe bottom of a last comprising a rotary cutter, a guide member close to the periphery of the cutter. upon which to positionthe lateral surfaces of the last so as to present the insole with its edge transverse to the periphery of' the cutter, said member having a lip in position to project between the bottom of the last and the edge of the insole. to guide the bottom surface .of the last, and a member arranged to support the other side of the insole close to the peripheryof the cutter. n Y

5. A machine for trimming an insole attached to the bottom of a last comprising a driven cutter, means upon which'to position both the lateral and bottom surfaces of the last to present the insole in operative relation to the cutter, and a shearing member in position to contact with the outer face of the insole and cooperating with said cutter and positioning means to trim the edge of the insole to a predetermined relationship to the lateral surfaces of the last.

6., A machine for trimming an insole attached to the bottom of a last comprising a rotary cutter, guiding means upon which to position the last so as to present the insole with its edge transverse to the periphery of the cutter, and a shearing member close to the periphery of the cutter and in position to support the edge of the insole during the operation of the cutter.

7. A machine for trimming an insole attached to the bottom of a last comprising a rotarycutter, guiding means upon which to, POSItIOII the last so as topresent the insole with its edge transverse to the periphery of the cutter, and a shearing member close to the periphery of the cutter and in position.

to support the edge of the insole during the operation of the cutter, and said shearing member being adjustable toward and from the periphery of the cutter.

8. A machine for trimming an insole attached to the bottom of a last comprising :1;

driven cutter, means upon which to position the lateral surfaces of the lastto-present the insole inoperative relation to thecutter so. as to cause the latter to cut through the in-;

sole in a direction from one face to the other thereof, said'meanshaving a lipvformed to project between the" last andthe insole to serve as a guide for the bottom surface of the last, and a shearing member close to the path of movement of the cutter and located 7 opposite to said lipiso as ,to'support, the outer side of the insole,.said lip and shear ing member having provision for relative adjustment to vary the distance between" them. h v

lOrA machme fortrlmmlng'an insole attachedtothebottom'of'a last comprising a driven cutter,-meansupon which to position both the lateral and bottom surfaces ofthe last to present the insole in operative rel'as tion to the cutter so as to cause the latter to cut through the insole ina direction fromone face to the other thereof,- and additional positioning means for determining the normal angle between thebottom'surface of the last and the path of movementof the cutter.

11. A machine for trimming an insole attached toithebottomof a last comprising a w driven cutter, guiding means} close to the cutter upon which to position the lateral and'bottom surfaces of the last so asto cause the cutter to cut througlrthe insole in a direction from one faceto the otherthereof, and a rest upon which to position'the outer face 'ofthe insole ,to determine the normal angular relation of the bottom sur-v face of the last to said guiding means,said rest having provision for yielding movement to permit the operator to vary said angular relation. 7 i 12. A machine for trimming an insole attached to the bottom of a last comprising a rotary cutter, guiding means upon which.

to position the lateral and bottom surfaces of the last so as to presentthe insole with .its edge transverse to the periphery of the cutter, and additional means upon which 7 to position the face of the insole to determine the normal angular relation of the bottom surface of thelast'to said guiding means and the consequent angle between the face of the insole and the path of movement of the cutter;

18. A machine for trimming an insole attached to the bottomof a last comprising a rotary cutter, guiding means upon which.

to position the lateral and bottom surfaces of the last so as to present the insole with its edge transverse to the periphery of the cutter, and additional means upon which to position the insole to determine. the-normal angle between the face of the insole and'the path of movement of the'cutter, said, additional means having PI'OVISIOII. for yield- 'ing movement to permit the operator to sole with its edge transverse to the periphery of the cutter, and a rest upon which to po- 1 sition the outer face of the insole to determine the normal angular relation of the bottom surface of the last to said guiding means and the consequent angle between the face of the insole and the path of movement of the cutter, said rest being adjustable to vary said angle and consequently the degree of bevel on the insole edge.

15. A machine for-trimming an insole attached to the bottom'of a'last comprising a shaft inclined upwardly and forwardly toward the frontof the machine, a rotary .cutter mounted on said shaft, and guiding means upon which to position the lateral and bottom surfaces of the last to permit turning movement of the last in a substantially vertical plane to present the insole to the action of the cutter, said means being constructed to maintain out of contact with the last all portions of the insole which are within the range of action of the cutter.

16. A machine for trimming an insole attached to the bottom of a last comprising a shaft inclined from the vertical toward the front of the machine and having at its upper end an upwardly tapering frustoconical cutter formed with cutting edges across its periphery, and guiding means at the front of the cutter upon which to position the lateral and bottom surfaces of the last so as to present the insole for turning movement in a substantially vertical plane transverse to the periphery of the cutter.

17. A machine for trimming an insole attached to the bottom of a last comprising a rotary cutter, guiding means upon which to position the lateral surface of the last to present the insole to the cutter with its edge transverse to the direction of cut, and means constructed and arranged with reference to said guiding means to project inwardly over the last bottom between the last and the insole and to extend substantially across the periphery of the cutter to determine the position of the bottom surface of the last with reference to the cutter.

18. A machine for trimming an insole attached to the bottom of a last comprising a rotary cutter, a guide member close to the periphery of the cutter upon which to position the lateral surface of the last to present the insole to the cutter with its edge transverse to the direction of cut, and a lip on said guide member formed to project inwardly between the bottom of the last and the insole opposite to substantially all portions of the insole which are within the range of action of the cutter.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN B. HADAWAY.

'Witnesse's:

CHESTER E. ROGERS, RUTH E. WARD.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents,

Washington, D. 0.

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