US2490497A - Checkering tool - Google Patents

Description

I Deg 3949 DE w. c. WINFIELD 2,490,497

CHECKERING TOOL Filed Jan 14, 1946 f. 4. WW A? a .5 Mai ifh Ezfzaid Patented Dec. 6, 1949 UNITED STATES PATENT OFFICE 2,490,497' onEoKERINdTboL De Witt o. Winfield, Newark, N. J. Application January 14, 1946,'sr'ia'1'N6. siijlii's 3 Claims.

This invention relates to new and useful improvements and structural refinements in tools such as may be used for checkering or hand knurling the surfaces of wooden articles such as gun stocks and other objects of a like nature.

The principal object of the invention is to provide a device of the character herein described which is particularly designed for hand use, rather than being associated with a machine.

Another object of the invention is to provide a checkering tool, which, when used, will produce parallel lines, accurately spaced at equal intervals with respect to one another.

A further object of the invention is to provide a checkering tool which is easily and conveniently operable.

An additional object of the invention is to provide a checkering tool which is of simple construction and which cannot easily become damaged.

With the above more important objects in view, and such other objects as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the invention, showing the same in use.

Figure 2 is a plan view of the invention, per se.

Figure 3 is a side elevation showing the reverse side of the invention, with respect to that illustrated in Figure 1.

Figure 4 is an end View taken in the direction of the arrow 4 in Figure 3.

Like characters of reference are used to designate like parts in the specification and throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of a blade i, provided with an elongated recess 2 in the lower edge thereof. One end of the blade is receivable into a suitable handle 3, to which it is secured by means of the rivets 4.

Provided on the lower edge of the blade l, between the remaining end thereof and the recess 2, is a plurality of longitudinally aligned cutting teeth 5, the same being of triangular cross-sectional configuration as is best illustrated in the accompanying Figure 4.

A U-shaped bracket 6, positioned in the recess 2, extends upwardly to straddle the sides of the blade I, and is pivotally connected to the latter by means of a pivot bolt l. One of the sides of the bracket 6 is formed integrally with an extension arm 8 which, in turn, is provided with a sharp guiding edge 9. The latter is also of a triangular cross-sectional configuration, and the apex thereof is parallel with and spaced from the apioes of the aforementioned cuttin teeth 5.

The edge 9 is urged downwardly to below the level of the teeth 5 by means of a spring in positioned inside the bracket 6. This spring is of a configuration best illustrated in the accompanying Figure l, and is retained in position by one of its ends ll engaging a suitable notch l2 formed in the edge of the blade I.

Rotation of the bracket 6 about the pivot l is restricted by a suitable bolt l3 engaging an arcuate slot i l formed in the end of the arm 8.

When the invention is placed in operation, the tool is held in the hand, as illustrated by the reference numeral l5, and by drawing the same across the surface to be checkered, the cutting teeth 5 will penetrate the surface and form a line of the desired length. This operation is repeated to form all successive lines, but each time a new line is being formed, the guiding edge 9 is kept in contact with the immediately adjacent line already formed and in this manner,

- the parallel relationship and equal spacing of the several lines is assured.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in the shape, size and arrangement of details coming within the field of invention claimed may be resorted to in actual practice,

if desired.

What I claim as my invention is:

1. A checkering tool comprising, a blade having an elongated recess formed in one longitudinal edge thereof, a plurality of cutting teeth on said edge between said recess and the end of said blade, a handle secured to said blade, a U-shaped bracket in said recess and straddling the sides of said blade, an extension arm fixed to one side of said bracket, a guiding edge on said arm disposed in side-by-side relationship with said teeth, a pivot pin connecting said bracket to said blade, said guiding edge being parallel with and adjacent to said cutting teeth, a spring in said bracket bearing against the edge of said blade, said spring urging said guiding edge below the level of said teeth, and means for limiting the movement of said bracket with respect to said teeth.

2. A checkering tool comprising a blade havmeans including a slot and a pin extending i in said slot.

3. The combination of claim 1 and said bracket travel limiting means comprising an elongated member secured to said blade, a slot in said blade, and a part of said elongated member being passed through said slot.

DE WITT C. WINFIELD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date D. 99,855 Coughlan June 2, 1936 692,028 Page Jan. 28, 1902 695,738 Krauss Mar. 18, 1902 1,379,973 Gillespie May 31, 1921 1,574,641 Christopherson Feb. 23, 1926 1,809,228 Ballou June 9, 1931 2,187,590 Lurie Jan. 16, 1940

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