US158569A - Burns - Google Patents

Description

2 Sheets- Sheet L I R. F. BURNS. Edge-Trimming Machines for Boot and Shoe Soles. N0.l58,569. Patent edJan.1'2,1875.

Tllg 3 A I 1- I J qwitues 5' f Y I I Maren/770v:

, R. F BuRNS. Edge-Tlim ming Machines for Boot a No. 158,569.

mi Shoe. Sales. 1 Patented Jan. 12, 1875.

Allin-neg.

UNITED STATES.

PATENT Grrrcn. A

nonnnr F. I 3URNS, or New YORK, N. Y,, ASSIGNOR TO THE Bonus MACHINE COMPANY, or SAME rnncn. a

IIVLPROVEMENIJN EDGEX-IRIMVMI"NG MACH|NES FOR BOOT AND sHoE sores.

Specification forming part of Letters Patent No. 158,569, dated January 12,1.37%,applicationfiled October 23, 1874.

To all whom it may concern Be it known that I, ROBERT F. BURNs, of the pity of New ork and State ofNew York,

= haveinvented an Edge-Trimming Machine for boots and shoes, and, in this instance, is applied as. an edge-trimmer, the object being to thoroughly and smoothly trim the edges of the soles at one'operation andat a rapid rate. In carrying out my plans I have found it convenient to use ,portions of the mechanism for adjusting the position of the boot or shoe while being. trimmed, similar to that as shown in the Letters Patent No. 97,758,.of1869, granted to me for a machine for polishing the edges of'boot and shoe soles, and the construction of toy-present machine' for trimming resembles thesame in generaldesign, though adapted toanother'purpose.

In my presentinvention I employ a revolving circular cutter-head,- having on and forming a part of its circumference a series of spiral cutting-blades placed parallel'to its axis. On the innerface ofthis'cutter-head, and also forming a part of it, are small vertical cuttingblades placed at a given angle above, and inclined to the rear of the parallelspiral-blades. The edge of the-'cutter-head projects above the cutting-bladesgand at its outer circumference is perfectly smooth for the purpose of protect ing the F uppers of the boots or shoes from being'injured' This cutter-head and its two sets of blades is made of one piece of metal. It is constructed hollow for the purpose of preventing any clogging by the chips and shavingseat from the sole, they passing freely between the spiral knives intothe interior of the cutter-head, and dropping out of the same I through the ppening in' its face." The function of the spiralknives is to out and trim the face of the edge of the sole; that of ,the vertical knives (which I term feathering-knives) is to finish the'corners of the sole, removing any roughness or feather left by the spiral knives. I also employ a double adjustable gage so arranged that the sole may be trimmed above or below'the cutter-head as best suits the convenience of the operator; also, fixed rests, having thereon adjustable guides ,-(also made doub]e,) adjusted by a right-an'd-lefthand set-screw, to adapt them tof'gumrning the position of the sole for any desired thick i ness of' cutby the spiral knives.

In the drawings, Figure l is a plan view Fig. 2, a side elevation; Fig. 3, a front elevation; Fig.4, an enlarged side elevation of the circular cutter-head; Fig. 5, a vertical section of the same; Fig. 6, a sectional front eleva- 'tion, showing the form of the two sets of cutting-knives; and Fig. 7, a detached and enlarged side elevation of the double ad justin g-- gage:

A isithe bedor frame of the machine. B is the'dri'ving-shaft,on which are placed two pulleys, 0,0, one fast and one loose. D is a stand attached to the bed ,A'. l) and D are the boxes aifixed to the bed of the machine, in which the shaft B is held and revolves. E is a circular revolving cutter-head, which is screwed on the end of the shaft B, and is constructed as hereinafter described. F is a double adjustable gage fastened to the screw G, which passes through a socket in the stand D, turned by a handwheel, H, and the gage is moved forward and back bv'this screw G,

operated by the ,hand-wheel H. It is held in position by a guiding-piece, which operates in the female-guides L L, attached to the bed A. This adjustable gage F is for the purpose of governing and gaging the width of the. sole -to be trimmed, and is made double in order that the operator may trim the sole above or below the -cutter-head as. may best suit his convenience. I I are adjustable guides attached to the fixed rests J 'J on the bed A.

These guides are also double, a set being.

placed on each side of the cutter-head, and" affixed, respectively, to the top and bottom of therests J J. The surfaces of these guides,

Wh'en'in use, are a little retired from the cut-' ting-sgrfaces of the knives of the cutter-head, andthefv'are' raised and lowered by means of the right-and-left-handed thumb-screws K and K, each screw controlling an upper and lower guide at the same time, thus governing the thickness of the material to betrimmed from the sole. a

The revolving circular cutter-head E (see Figs. 4, 5, and 6) is constructed hollow, for the purpose of allowing the chips and shavings of leather cut .from the sole to pass to its irate-- rior, and thence out through the opening (1 in its face. The series of spiral knives a a, a a a are constructed parallel to its axis, and form a portion of its circumference. They are made spiral for the purpose of producing draw-- ing cuts. The outer'end of the'cutter-headis provided with a circular disk or shield, for the purpose of protecting-the upperfrom injury on its inner face, and, forming a part of it, are a series of sinall vertical cutters, b b b b I), set at agiven angle (at nearly right angles) to the spiral cutters, above and inclinedto their rear. The periphery of the face or shield of the cutter-head reaches above the cutting-knives, and'is turned perfectlysmooth on the outer edge, as seen at c in Figs. 4 and means of revolving cutters is old, but by the use of my improved. hollow cutter-head and double gages and rests I obtain important advantages over all other forms of construc- 7 tion.

I claim asnew and as my invention- 1'. 'Thehollow circular cutter-head E, having the spiral cutters a, a a a and a, ar-

ranged parallel to its axis; also, provided with a-circulardisk or shield at its outer end, the

periphery of which extends beyond the spiral cutters, and having upon its inner face the vertical cutters b, b, b, b and I), all cons'tructed from one solid piece of metal, arranged and operating substantially as and for the purposes herein shown and described.

2. In combination with the hollow circular cutter-head E, provided with the two sets of. cutters and shield, the double adjusting-gage F, operating substantially as and for the pur I poses described and set forth.

' 3. In combination with the hollow circular cutter-head E, provided with the two sets of cutters and shield, the double set of guides I Ladjustable'by'means of thnmb -serewsli, substantially as and for the purposes as described.

ROBERT F. BURNS. Witnesses:

A. L. MUNsoN,

W. H. GRAY.

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