US404593A - Ruler - Google Patents

Description

(No Model.) I

. A. BROWN 86 P. C. FAYETTE.

RULER. .'N 0. 404.593. Patented June 4 1889.v

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UNITED STATES PATENT OFFICE.

ARTHUR BROIVN AND PETER O. FAYETTE, OF DETROIT, MICHIGAN.

RU LER.

SPECIFICATION forming part of Letters Patent No. 404,593, dated June 4, 1889.

' Application filed January 3, 1889. Serial No. 295,283. (No model.)

To all whom it may concern:

Be it known that we, ARTHUR BROWN and PETER C. FAYETTE, both of Detroit, in the countyof WYayne and State of Michigamhave jointly invented a new and useful Improvement in Rulers, of which the following is a specification.

Our invention consists in an improvement in rulers, hereinafter fully described and claimed, the object of which is to obviate inking the books or the fingers of the user in handling the ruler.

The drawings are all side elevations, Figures 2, 3, and 5 being partly broken away to show the construction.

A represents a wooden ruler, preferably grooved on both edges, as shown at E F.

Inches and fractions of inches are indicated on one of the grooved edges, and the side marked G may be somewhat narrower than the other side to permit the inch and fractionof-inch marks to be plainly seen and to facilitate the use of the ruler for cutting paper.

B represents a wire secured to the ends of the ruler and set out from the edges thereof in line with the center of the groove F, to provide a straight-edge for ruling, and by this construction the ruler A may be picked up by catching the edges with the thumb and finger without bringing the fingers in contact with the outer surface of the Wire B, against which the pen rests when ruling. The wire B may be fastened to the ruler in a number of ways. As shown in Fig. 1, it is carried beyond the end of the ruler, bent in U shape,

then bent downward, and its end enters the end of the ruler at the point marked E. .In Fig. 2, instead of passing down and entering the end of the ruler, the wire is carried back along groove F and enters the .edge of the ruler at the bottom of the groove at the point marked E. In Fig. 4 the wire is simply bent down at the point 0 parallel with the end of the ruler and enters the end, as in Fig. 1. In Fig. 5 the wire is bent at the point C, so as to enter the end of the ruler diagonally. In

:Fig. 3 a strip of metal D is'used instead of a wire, and is inserted in a saw-kerf made in the bottom of groove F, and is secured in place by rivets passing through the ruler and the metal strip.

l/Ve usually prefer to carry the metal straight-edge somewhat beyond the ends of the ruler, as shown in all the figures except Fig. 4; but this is mere matter of choice.

It is evident that with a ruler thus constructed ink from the ruling-pen is left on the metal straight-edge instead of upon the ruler, and that the ruler can be readily picked up by its edges without inking the fingers.

What we claim as our invention, and desire to secure by Letters Patent, is

1. The combination of a ruler grooved on both its edges and a metal straightedge secured to the ruler and projecting centrally therefrom, one of the grooved edges of said ruler having inches and fractions of inches indicated thereon, substantially as described.

2. The combination, with a ruler grooved on both its edges, of a metal straight-edge set out centrally therefrom and secured to said ruler at its ends only, substantially as described.

ARTHUR BROWN. PETER O. FAYETTE. Witnesses:

CYEUs E. LOTHROP, ADELAIDE A. ANDERSON.

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