US236976A

US236976A - babton

Info

Publication number: US236976A
Authority: US
Publication date: 1881-01-25
Anticipated expiration: 1898-01-25

Description

mo l ,W. R. BARTON.

S616 Trimming Knife.

.No. 236,976. Patented Jan. 25, 1881.

I nvenlor:

Will-0:01.151 11 ,Ba-vion N-PETEIS, PHOTOUTHDGIUPHER. WASHINGYON, D. Q

UNIT D STATES PATENT OFFICE.

WILLIAM R. BARTON, OF BRIDGEWATER, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO GEORGE G. HAMMOND, OF CENTRAL FALLS, R. I.

SOLE-TRIMMING KNIFE.

SPECIFICATION forming part of Letters Patent No. 236,976, dated January 25, 1881.

Application filed December 9, 1880. (ModeL) To all whom it may concern:

Be it known that I, WILLIAM R. BARTON, a citizen of the United States, residing at Bridgewater, in the county of Plymouth and State of Massachusetts, have invented new and useful Improvements in Sole-Trimming Knives, of which the following is a specification.

This invention relates to a guard-knife for trimming the soles and other parts of boots and shoes, its object being to provide against cutting the upper in the process of trimming.

The invention consists in an arched arm spanning the knife, and having at one end a clamp embracing the knife and at its other end a guard extending across the end of the knife, the arched arm being provided with an adjustable gage-plate, all of which Will be more fully described hereinafter, and specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of a guard-knife constructed according to my invention. Fig. 2 is a perspective view of the guard detached. Fig. 3 is a section in the plane indicated by line as as, Fig. 1.

The letter A indicates a blade projecting from a handle in the usual manner, and B is an adjustable clamp embracing the blade near the handle. From the upper side of this clamp springs a curved arch-shaped arm, 0, extending toward the end of the blade, and carrying at its outer end a guard-plate, D, extending across and lying against the end edge of the knife, so as to lie between the said edge and the upper of a boot or shoe when the knife is being used to trim the edge thereof. A short distance from its lower edge this guard-plate is provided with a longitudinal groove, 0, into which the end edge of the knife sets, and the shavings are thus prevented from being caught between the end edge of the knife and the guard-plate. plate extends somewhat beyond the cuttingedge of the knife, for the purpose of preventing the sharp front corner of the blade or the end of its cutting-edge from coming in contact with the upper accidentally.

The letter F designates an adjustable gageplate, the inner edge of which lies in front The front edge of the guard.

of and parallel with the cutting-edge of the knife, and from the upper surface of thisgageplate rises a slotted arm, g, a broad longitudinal rib, h, on the back of which fits inatransverse guide-groove in the arm 0. Ascrew, 2', passing through the slot in the arm 9 and into a screw-hole in the arm 0, serves to hold the gage-plate at any adjustment of the same, the slot in said arm g permitting the gageplate to be adjusted above the knife-edge for regulating the out.

For a portion of its length next to the handle the blade A has its blade preferably cut away, forming a shank, A, narrower than the other part of the blade, and it is this shank or narrower portion that the clamp B embraces, and is thus rendered adjustable transversely as well as longitudinally, the space between its jaws being wider than said shank. By reason of this transverse adjustability of the clamp, it will be seen that the gage-plate may be kept at a proper distance in front of the knife-edge, as such edge is gradually worn away.

Though I have shown in the drawings a knife having an oblique end edge and a guardplate to correspond, I do not confine myself to such shapes of these parts, as it is obvious that a guard-plate can be fitted to the curved or right-angled end edge of a knife, if found desirable.

What I claim is 1. In a sole-trimmer for boots and shoes, the combination, with the knife A, of the arched arm 0, having at one end the clamp B, embracing the knife, and at the other end the guard D, extending across the end of the knife, and the gage-plate F, arranged in front of and parallel to the cutting-edge of the knife, and having a vertically-projecting arm, g, ad- 0 justably connected with the arched bar, all substantially as described.

2. The combination, with the knife, of the arched arm 0, constructed with the clamp 13, guard D, and the central transverse guide- 5 groove, and the gage-plate F, constructed with the vertically-projectin g slotted arm g, having a rib, h, adjustably secured in the transverse groove of the arched arm by a screw, i, all

substantially as shown and described. 10c

3. The combination, with the knife A, of the my hand in the presence of two subscribing arched arm C, carrying, an adjustable gagewitnesses. plate, F, and provided at its outer end with the guard I), having a longitudinal groove, e,

5 in which the end of the knife bears, substan- Witnesses:

tially as and for the purpose described. RICHMOND A. BARTON,

In testimony whereof I have hereunto set WILLIAM E. BARTON.

WILLIAM RANDAL BARTON.