US1166578A - Cutting device. - Google Patents

Description

J.F.CLARK,

M cunme DEVICE-r APPLICATION FILED APR. 12, 1915- 1,1(3ELE57W3.

Patented Jan'.4,1916.

COLUMBIA PLANUGRAPH co., WASHINGTON. D. c.

UN trap srnrns PAT NT- 3m JOSIAH FRANKLIN CLARK; oFnEr'UBLIc, i?nNNsYLvANIA.

- CUTTING DEVICE.

To all whom it may concern:

Beit known that I, JosIAH F. CLARK, a citizen of the United States, residing at Republic, in the county of Fayette and State of Pennsylvania, have invented certain new andv useful Improvements in Cutting Devices, of which the following is a specificas .tion, reference being had to the accompanying drawings.

This invention relates to certain improvements in cutting devices and has relation more particularly to a device of this general character especially designed and adapted for use in connection with slate or the like;

construction and in the combination and 'arrangement of the several parts of my improved cutting devlce whereby certain 1mportant advantages are attainedand ,thedevice is rendered simpler. less expensive and otherwise more convenient and advantageous for'use, all as will be hereinafter more fullv set forth.

The novel featuresof the invention will be carefully defined in the appended claims.

In order that my invention may be the better understood, I willnow proceed to describe the same with reference to the accompanying drawings, wherein Figure 1 is a view in side elevation. of a cutting device constructed inaccordance with an embodiment of my invention, with a portion broken awav; Fig. 2 is a sectional.

view taken substantially on the line 2,2 of Fig. 1; and Fig. 3 is a fragmentary view, partly in end elevation and partly in section, of my device as herein set forth.

As disclosed in the accompanying drawings. 11 denote two elongated jaws of predetermined dimensions and preferably formed of angle iron and ,maintained in requisite spaced relation-through the med um f he b oc s 2 an 3 inte p Specification of Letters Patent.

tween adjacent extremities of the jaws and maintained in appliedposition through the medium of conventional members 4. The

block 3 projects beyond the work supporting flanges a of the jaws and is preferably disposed onan inward curve and has pivotally secured to its free extremity the laterally curved arm 5 secured to" an extremity of the elongated cutter blade 6, herein disclosed as-longitudinally curved, for apurpose which is believed to be self-evident, and as is believed to be clearly; shown in the accompanying drawings, the blade 6 is adapted to extend between the jaws 1-1. The working edge of the blade is hollow ground to afford two cutting edges while the side faces of said blade are disposed in planes converging from the working edge so that a clearance of one-eighth of an inch is assured as it passes thr'oughthe work. It will'be further observed that the arm 5 permits a shearing action on the work whereby the dcutting operation is ma terially facili tate tially Ll-shape in form, and having the free extremities. of. its stem pivotally engaged withthe upstanding brackets 8 carried by the members 1 adjacent the block 2, and it is to be observed that the opposed faces of 'the outstanding portions of said brackets overlie the space between the members 1 whereby it is assured that the blade 6 will not contact with said members.

It is also to be observed that the brackets 8 are of such whensaid knife isat the limit of its inward Patented Jan. 4, 1916. Application filed April 12, 1915. Serial No. 20,920. v

a length'as to extend beyond the knife 6 when in compacted adjustment. It will also be readilyperceived that the yoke 7 when in folded position serves to prevent movement of the blades 6 aboutits pivot as said yoke may be locked in the position indicated by dotted lines in Fig. 1. In the present embodiment ofmy invention, the pivotal connection between the stems of the yoke 7 and the brackets 8 is afforded through the medium of the headed. members 9 having coacting therewith the winged nuts 10 whereby 7 7 so In order to hold the knife 6 against lateral it will be readily perceived that the guiding yoke may be eliectively maintained in operative position or, when desired, may be folded inwardly of the members 1 so that the device may be compacted to occupy a minimum of space when not in use. The flanges b of the members 1 are preferably gradually increased in width fromtheir ex.- tremities toward the centers thereof so that the members 1 will be materially strengthened and I also find it desirable to have the "free marginal portions of said flanges b at their longitudinal centers tied or connected by the interposed block 11 suitably secured thereto by the conventional retaining means 12. V

Five-tally supported between the flanges I) at the'opposite extremities of the jaws are the supporting members 1% having their outer or free extremities pointed so that they may be readily engaged with a supporting surface. As herein embodied, the pivotal connection between the supporting members 14; and the flanges 7) is afforded by the headed members 15 passing through said flanges b and the members 14 and having enacting therewith the winged nuts 16 whereby it will be perceived that said supporting members may be effectively clamped in proper adjustment rel ative to the jaws 1 or may be folded fiithinthe space between said avvs when the device is not in use so that the same may be readily and conveniently placed within a suitable carrying case when it is desired to transport the same. I

' lFi-om the foregoing description, it is thought to be obvious that a cutting device constructed in accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly A well adapted for use by reason of the convenience and facility with Which it may be assembled, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason ll do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice.

I claim:

1. A device of the class described comprising spaced eiongated jaws, a cutting blade pivotally supported by said jaws, a guiding yoke pivotally engagedwith the jaws and through which the cutting blade projects, and means for locking said yoke against pivotal movement, said yoke when at the limit of its inward movement serving to hold the cutting blade against pivotal movement.

2. A device of the character described comprising spaced elongated jaws, a cutting blade in pivotal engagement with said aws, brackets projecting upwardly from the jaws, a yoke pivotally engaged with the brackets and through which the cutting blade extends, said brackets being of: a length to overlie the cutting blade when at the limit of its in ard movement, and means "for looking the yoke against pivotal movement.

In testimony whereof I hereunto aliiX my signature in the presenceof two witnesses.

JOSIAH FRANKLIN CLARK.

Witnesses:

Louis GAGGIANI, PAUL TOSSANE.

iopies of this patent may be obtained for five cents each, by addressing"v the Commissioner of Patents, Washington, 1). 0.

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