US1334340A - Cutter-guard - Google Patents

Description

E. A. WILLIAMS.

CUTTER GUARD.

APPLICATION FILED JULY 7, 1911.

1,334,340. 7 Patented Mar. 1920.

'Wlll i F131. 1

(Ill!!! f7 26 "UNITED stares PATENT OFFICE.

ERNEST A. WILLIAMS, 0]? CINCINNATI, OHIO, ASSIGNUR, BY MESNE ASSIGNMENTS, T0

UNITED SHOE MACHINERY CORIORATION, OF PATERSON,

TION OF NEW JERSEY.

NEW JERSEY, A CORPORA- CUTTER GUABD.

Specification of Letters Patent.

Patented Mar. 23, 1920.

Application filed July 7, 1917. Serial No. 179,156.

To all whom it may concern:

Be it known that I, Eiuvrs'r A. WILLIAMs, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State oi Ohio, have invented certain lim prove'ments in Cutter-Guards, oil which the t.iollowing description, in connection with the accompanying drawings, is a specification, like reference characterson the drawings indicating like parts in the several figures.

This invention rel ates to machines for trimming the breasts of Louis heels after they have been attached to shoes, and particularly to a guard for the rotary cutter employed in such machines. A machine for performing this operation upon the heels of boots and shoes is disclosed and claimed in United States Letters Patent No. 7 84,340, granted March 7, 1905, on application of Benjamin F. Mayo.

In the operation of this machine the heel of the shoe is held on a support and made to traverse a rotary cutter in a direction from side to side of the heel. In this way the breast face of a heel is given a shape prop.- erly curved longitudinally of the shoe but the portion of the breast which extends to the shank of the shoe coincides with the curve oi the shank only at the longitudinal median line of the heel, and the lateral portions of the heel breast must be trimmed to the lateral curve of the shank. In the machine ot the above patent there is provided an additional cutter for this purpose, the shoe being held in the hands of the operator and manipulated to cause the cutter to remove the proper amount of stock so to form the surface of the heel breast next to the shank that it will merge into or coincide with the lateral curve of the shank. In the machine of the patent a guard is provided on the shaft with the cutter which either is loose on the shaft so that it is stopped from rotation when brought into contact with the shoe or is fixed on the shaft and rotates with the cutter. This guard engages aportion of the shank where no trimming is to be done and limits the action of the cutter upon the adjacent portions of the heel breast. The guard, even when loose upon. the sha ft, will, because of friction, take up the motion of: the shaft and rotate therewith and, on. account of its rapid rotation when the shoe is presented to it, apt to leave a mark upon. the shoe shank. Furthermore, this type of guard must have a. fixed diameter which. cannot be altered to correspond with the diameter of the cutter as the cutter is reduced by grinding.

P n object of this invention to jn'ovhjle an improved guard for a rotary cutter which is stationary so as to prevent injury to the part of the shoe presented to it and which may be adjusted. relatively to the cutter so as to adapt it to cutters of various sizes and. to varying diameters of the same cutter as it is reduced by grinding.

These and other objects of the invention will appear more fully from the following detailed description when read in connection with the accompanying drawings and will be pointed out in the appended claims.

In the drawings,

Figure 1 is an end elevation of the head of a machine embodying this invention;

Fig. 2 is a plan view of the machine, partly in section, showing the work in its relation to the guard and cutter.

The construction of the machine is in general similar to that of the prior patent re ferred to above. As shown herein, the column of the machine is represented at In the upper portion or head 4. of the column is ournaled a cutter shaft (3 on which is mounted a rotary cutter 8 for trinnning the lateral portions of the breast 01' a heel to correspond with the curve of the shank of the sole, the shoe being held for that p urpose in the position shown in Fig. 2. The cutter has a rounded cutting face of a curvature somewhat less than that of the portion oi? the shoe heel between. the breast and. the shank, and outside the cutter is arranged a stationary guard 10 having a fiat portion 12 close to the sides otthe cutter. An edge face 14 of the guard 10 forms substantially a continuation of the cutting face of the cutter, being rounded. oil on the side away from the cutter to allow contact of: the guard with the work only on a line adjacent to the cutter. The inner face of the guard inside the flat portion 12 is countcrbored at 15 to avoid possibilityot contact of. that portion with the cutter. The guard is provided with an opening 16 to admit the end. portion otthe cutter shaft without touching the guard.

On a rearward extension of the guard is a split clamp 20 arranged to be tightened upon a cylindrical supporting stud 22 by means of a screw 24:- The stud 22 has a threaded extension or stem 26 arranged eccentrically of the cylindrical stud 22 and threaded into a lug 28 on the frame of the machine head. A set nut 30 is provided on the stem 26 to clamp the stem against rotation in the threaded lug 28. The stud 22 is provided with a screw driver slot 32 so that it may be turned with the threaded portion 26 when the nut 30 is loosened. When the screw 24 of the clamp 20 and the nut 30 are loosened, the eccentric stud 22 may be turned and the work engaging portion of the guard thereby adjusted in and out with relation to the cutting face or periphery of the cutter. Up and down adjustments of the guard may be effected by swinging the guard on the stud 22, and the guard may be adjusted toward and from the cutter by sliding the guard longitudinally of the stud 22. WVhen the screw 24 and the nut 30 are tightened the guard is fixed in adjusted position.

In the use of this machine equipped as shown herein, the shoe is held in the operators hands in the position illustrated in Fig. 2 of the drawings with the portion 14 of the guard in contact with the shank portion of the sole from which no stock is to be removed, the cutter being then adjacent to the portion of the breast of the Louis heel which extends toward the shank of the shoe. The guard has been so adjusted backwardly or forwardly (that is, toward or from the operator) that the cutter will reach the proper distance beyond the guard and the shoe is rocked and moved up and downin contact with the guard until the portion of the heel which extends toward the shank is made flush with the curve of the shank at all points laterally of the shoe. Since the guard is stationary, all danger of marking or injuring the sole by contact with the guard is avoided, whereas contact of the sole I with a rotary guard as in prior constructions shoe to cut'progressively from was very likely of the sole. Having fully described my invention, I claim as new and desire to secure by Letters Patent of the United States:

'1. In a machine for treating heels which have a portion of the breast face extending over-the shoe shank, the combination of a shaft, a cutter mounted thereon adapted to trim from the overlying portion of the breast of the heel of the shoe portions of saidbreast adjacent to the shank of the sole between said edges and the central part of the shank, said cutter being arranged upon relative movement of the cutter and shoe in a direction transversely of the length of the one side of to mar or deface the surface the breast to the other side, and a stationary guard arranged to engage the shank of the sole at a point adjacent to the part of the heel which is being operated upon by the cutter and shaped relatively to the cutter to guide the shoe during said transverse movement and to permit the cutter to trim said portion of the breast while the guard engages the shank of the sole.

2. In a machine for treating heels which have a portion of the breast face extending over the shoe shank, a shaft, a cutter mounted thereon adapted to trim from the overlying portion of the breast of the heel of the shoe portions of said breast adjacent to the shank of the sole of the shoe between the side edges and the central part of the shank of said sole, said cutter being arranged upon relative movement of the cutter and shoe in a direction transversely of the length of the shoe to cut progressively from one side of the breast to the other, a. stationary guard arranged to engage the shank of the sole at a point adjacent to the part of the heel which is being operated upon by the cutter and shaped relatively to the cutter to guide the shoe during said transverse movement and. to permit the cutter to trim said portions of the breast while the guard engages the shank of the sole, and means for adjusting the guard to expose more or less of the cutter for action upon the shoe.

3. In a machine of the class described, a shaft, a cutter mounted thereon adapted to trim from the breast of the heel of a shoe portions of said breast adjacent to the shank of the sole of the shoe between the side edges and the central part of the shank, a guard for engaging the shank of the sole during the operation of the cutter, a rearward extension on the guard, an eccentrically mounted stud entering said extension, means for clamping the extension on the stud, and means for holding the stud. against rotation.

4. In a machine of the class described, a shaft, a cutter mounted thereon, a guard for engaging the work during operation of the cutter and having a rearward extension provided with a. clamp, a cylindrical member upon which the extension is clamped, an cecentric mounting for the cylindrical member, and means for holding the cylindrical member against rotation.

In a machine of the class described, :1 shaft, a cutter mounted thereon, a guard. for the cutter having a rearward extension provided with a split clamp, a cylindrical stud embraced by said clamp and upon which the guard is adjustable both longitudinally of the stud and about the stud as a. pivot, and means for securing the stud in ad usted position forwardly and rearwardly.

In a machine of the class described, a

shaft, a cutter mounted thereon, a cutter guard having a rearward extension provided with a split clamp, a cylindrical stud embraced by said clamp and upon which the guard is adjustable both longitudinally of the stud and about the stud as a pivot, a threaded extension on said stud arranged eccentrieally of the stud and engaging a threaded hole in the frame, and means for holding the extension against rotation in the frame. 10

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

' ERNEST A. WILLIAMS.

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