US1642719A - Heel-beveling machine - Google Patents

Description

Se t. 2 19 p 0 27 M. F. BROGAN HEEL BEVELING MACHINE Filed Aug. e', 1924 Patented sept. 20,v 1927.

UNITED STATES MICHAEL FRANK EROGANL or, LAWRENCE, irassnorrisnrrrs,` AssIGNoR To UNITED SHOE MCHINERY'CORPORATION, OF PATERSON, NEW JERSEY, A vCORPORATION OF NEW JERSEY.

' YHEEL,-BEvELIiver MACHINE.

Application filed August G, 1924. Serial No. 730,455.

This invention relates tovcutting machines and is herein illustrated asiembodied in. a machine adapted to bevel the margin of a kspring` heel. l l I In t-lieiiian11fact1ire of shoes havingsoles of crepe rubber, it is customaryto provide spring heelsI of that material. These vspring heels are made by dieing` ,outv properly sliaped'blanks froincrepe rubber sheets and thenr lieveling` the forward margins of the blanks. Becauseofthe nature of crepe rul ber, ythis beveling operation has presented considerable 'dii'licultyf and, so far as I ain aware, has hitherto *been performed by means vof a hand knife manipulated in such a manner as to produce'a draw cut. l

The general object of the presentinvention is to provide av machine by ythe use of whichl this and similar `operations .may be performed with rapidity and precision: n Accordingly. the present invention is 1llustrated as embodiedin a machine comprising a` work-support and a rotary` disk cut-ter whichV are relatively movable to cause the cut toprogress through the work. The illustrated*workfsupport is movable for this purpose, and is therefore hereinafter termed ra work-carrier. In the illustrated machine, the work-carrieris provided with a bed to engage the attaching face of a. heel blank, an abutmentv to engagethe breastl face and thereby register tlie heel relatively to the cutter, and with an abutment to engage one side of the periphery ofthe heelblank and thereby push the lat-ter widthwise past the cutter. Thus, while the work-carrier is move able lengthwise of the major dimension of a cut the cutting load at any instant is limited Ato the minor dimension, and when cutting :rubber this is. preferable to minimize the distortion of the rubber,` inuch of which isdue .tofriction'. lThe work-carrier is alsopreferablyprovided with a 'grooveinto which the cuttermayproject to Acut. entirely through thework without touching-the carrier. A heel blank supported .by a carrier having a Ybed to engagetbe attaching face. anr abutment to` engagethe breast face,*and anabut- .ment .toengage one vsidefof the periphery as displacement by tliecutter, and since no other clamping means is needed, successiveblanks may be beveled with great rapidity and accuracy. t

These and other features ofthe invention, including certain details of construction Vand combinations of parts, will be described kas embodied in an illustrative machine and pointed'outin the appended claims.

. Referring now to the accompanying drawings, i

Figure 1 isa perspective of amacliinein which the present invent-ion is'` embodied;

Figure 2 is: a perspectivecf aI piece of work after Vit has been operated upon; l I Figure 3 is a. detail in perspective ofthe carrier for .the blank and the guide upon which it is slidable, and

. Figure; 4 is a view partly in section and partly in elevation ofa portionof the machine showing a heel blank in process of being operated upon.

Tie pedestal 5 4of t-liemacliine. has a segL mental top 7 upon which rest two lugs, one of which is shown at 9, formed at the lower end of a generally U-shaped head 11. Cap screws, one of which is shown at 13, eXtend ing through slots in the segmental top 7 and threaded into th-e lugs hold the head 11 in place and permit the head to ybe tilted' into and held in different positions. Rotatably mounted inthe arms ofthe U-shaped head are two alined shafts one of which 15 carries at its outer endfa disk ycutter 177. The other yshaft 18 ris slidaole` in thisl bearing and carries a pulley 19. The rear end of the cut-ter shaft and the front face of the pulley carry complementary .clutch members which may be caused to be engaged ordisengaged by pushing or pulling the handle 21 on the slidablymounted square rod 23, the forward end ofv which` has a linger extending intofa grooveQ form-ed inthe hub of the pulley 19. The particular. clutch has not been shown since `the detailsoffits Vrconstructiony formino part of. the presentpinvention and ,any suitableclutch may be used. A belt, indicated by the dot and dashr line, runs around. the pulley. 19, over` idle pulleys 27 and up arounda power-pulley, .not `showinfthis arming-ement ofbelt and pulleys permitting v CTI the head ll to be tilted without disturbing the driving connection. l

The invention includes a manually movvable work-carrier upon whichrthe article of work may be held by the operators lingers so that onehand willv be suflicient to move A the carrier past the cutter and to maintain site sides of the cutter without clamping the work. Consequently, a true and accurate cutV is insured and the passage of the cutter through the material, particularly through rubber,is made easierand the waste material is'left free to r-ecede from the cutter as the cut progresses. f z

The mountingv for the work-carrier comprises an arm or fixture 29 projecting from the head 11 under the cutter, and adjustable bracket 33, 35, and a horizontal guide 39 affixed to said bracket by screws 87. A segmental slot 30 is formed inthe bracket and the latter is clamped to the arm 29 by bolts 31v extending through said slot.

The work-carrier comprises a flat bed 41,

preferably inclined, anl abutment 43 at the Cil lower edge of the bed to register the heel blank relativelyto the cutter, and abutments 68 at the ends of the bed.v The bed and the v abutment 43 form a square trough to receive the initially square breast portion of a heel as' shown in Fig. 4, and a groove 49 is formed in the deepest part of this trough to receive a portion of the cutting edge ofthe cutter 17 so that the latter mayv cut entirely through the heel blank without touching the carrier. To obtain the groove 4911 preferably make the abutment 43 as a separate piece, form a rabbet therein, insert a spacer Movement of the work-carrier in one di-V rection is arrested by an abutment 51 aiiixed to one end of the guide 39and movement in the opposite direction is arrested by the head of a screwV 50 set into the guide. 'work-carrier may be automatically returned to the abutment 51 by a tension spring 52f if vone end thereof is attached to said abutment and the other endto a pin 'fastened to the carrier (see Figgl).

To bevel the breast of aV heelblank the attaching face'of theblank isl placed on the bed 41, the square or abrupt breast face '1S The placed against the abutment 48, and prefer-l ably the periphery at one side of the blank is placed against the abutment 63 that will act as a backer to brace or push the blank against the cutter.

While grasping the upper part of the work-carrier and the heel blank between theV a cock 61. Also, a segmental shield 55' mayL be arranged to surround the upper part of the cutter so that the operators hand i will be protected.

Although the invention has been set forth as embodied vin a particular machine, 'it should be understood lthat the invention is not limited in the scope of its applica-tion to the particular machine which has been shown and described.

Having thus described my invention, what I claim as new and desire t-o secure by Letters'Patent of the United States is':- d

1. VA cutting machine comprising a workv support having surfaces arranged to engage two angularly related meeting surfaces of an article of work, said work-engagingsurfaces forming a trough, and a rotary disk cutter arranged to operate in said trough, said support and said cutter being Vconstrained vto relative rectilinear movement-'lengthwise of 'said trough to cause the cut to progress through the work.

2. A cutting machine comprising a worksupport having a groove and non-confront-v ing work-engaging surfaces at opposite sides of said groove, and a rotary disk cutter arranged to project into said groove, said sup` port and said cutter being constrained to relative rectilinear movement lengthwise of said groove to cause the out to progress through the work. n

3. A cutting machine comprising a movable work-support having rigidly related non-confronting work-engaging surfaces forming a trough to receive the work and having a groove extending lengthwise of said trough at t-he deepest part thereof, a

lll() rotary disk Acutter arranged to project into v 'said trough and into said groove, andmeans to guide said work-'support in straight lines lengthwise of said trough. l Y

4. A cuttin-g machine comprising a worksupport having a groove and non-confronting work-engaging surfaces at opposite sides of said groove, and a cutter arranged to pro-l ject' into'said groove, said support and .Said

cutter being relatively movable lengthwise of said groove and relatively adjustable to vary the angle of the plane of the cut.

5. A cutting machine comprising a work-` support having a bed to engage the attaching face of a heel blank and having an abutment to engage the breast face thereof, and a cutter arranged' to sever the blank with an oblique cut to produce an inclined breast tace, said support and said cutter being relatively movable widthwise of a blank placed on said support as aforesaid.

6. A cutting machine comprising a worksupport having a bed to engage the attaching face of a heel blank, an abutment rigidly related to said bed to engage the periphery at one side of the blank, means to engage the breast face of said blank, and a cutter arranged to Sever the blank with an oblique cut to produce an inclined breast face, said support and said cutter being relatively movable widthwise of the blank to cause the cut to progress toward said` abutmenty from the opposite side of the blank.

7. A cutting machine comprising a workcarrier having a bed to engage one face of an article of work, and a rotary disk cutter arranged to traverse the opposite face of the article and cut the latter in two, said carrier being movable along lines parallel to the plane of said bed to effect cutting progress, saidcutter being at an acute angle to said plane to produce a bevel cut, and said carrier having vtwo work-engaging abutments one t0 register rthe article of work relatively` to said cutter and the other to push the article along the lines of movement of the carrier.

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

MICHAEL FRANK BROGAN. y

Images