US826618A - Marking-gage. - Google Patents

Description

No. 826,618. PATENTEDJULY 24, 1906.,

w. F. SMALL. MARKING GAGE.

APPLICATION FILED NOV.13.19Q5| witn aoaeo I i I 1 1n: norms PETERS cm, WASHINGTON, o c,

UNITED STATES PATENT OFFICE.

MARKING-GAGE.

Specification of Letters Patent.

Patented July 24, 1906.

Application filed November 16. 19054 Serial No. 287,615.

To all whom it may concern:

Be it known that I, WALLACE F. SMALL, a citizen of the United States, residing at Ever ett, in the county of Snohomish and State of Washington, have invented certain new and useful Improvements in Marking-Gages, of

which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to markingages, one of the objects being to provide a dup ex marking-gage that shall be sim le in construction and easy of operation an which is adapted to be used as a mortising-gage, thumb-ga e, bevel, rule, or compass, according to the demands of the operator.

Other objects and advantages of my invention, as well as the structural features by means of which these objects are attained, will be made clear by an examination of the specification, taken in connection with the accompanying drawings, in which the same reference-numerals indicate corresponding portions throughout and in which Figure 1 is a perspective view-0f my complete device. Fig. 2 is a longitudinal section; and Fig. 3 is an elevation of the gage-bar, showing the side face opposite to that shown in Fig. 1, the block being removed from the 1 designates a age-bar of any desired length and provided on each of its sides with a series of graduations to form a scale or rule for measurin One end of this gage-bar is provided Wit a vertical opening, throu h Which projects a marking-point 2, and t e other end is split to form a longitudinal slot 3. At a point near the outer end of said slot the walls thereof are hollowed out or concaved, as shown at 4, to receive a pencil 5, said pencil being held in adjusted position by reason of the spring tension exerted thereon by the arms 6 on each side of said slot. Slidably mounted on the gage-bar 1 is a head or block 7, which is adapted to be held in an adjusted position by means of a set or thumb screw 8, assing therethrough and engaging with the ar 1. Fixed in the bottom of said block 7 is a pivoting-point 9, arranged midway between the sides of said block. To use this marking-gage as a compass, it is explained that the block 7 is one inch thick to cover the spaces between the inch-lines on the bar, so that in using said gage-bar as a compass to form concentric circles the diameter of these circles may be ascertained by setting said block 7 so that it will be even with one of the inch-lines on the top or side of the gage-bar. Assume the block 7 to be set so that the edge opposite the pencil is even with the two-inch llne. v The pivotingpoint 9 will then measure exactly two and one-half inches from the oint of the pencil, which, it will'be observed is so arranged in the slot that its point is exactly in line with the point where the measuring graduations begin on one side of the gage-bar. Consequently the circle will be exactly five inches in diameter. It is obvious that by adjusting the block 7 circles of different diameters may be quickly and readily drawn either by using the encil or by using the steel point 2, inasmuc as the graduations on one side of the-bar are the reverse of those on the other side, and the marking-point 2 has its lower end directly in line with the point where the measuring graduations begin on one of said graduated sides. For expedition in usin the device as a compass I have provided t e top of the gage-bar 1 with graduations to ,corres ond with the graduations on the side of sai bar, as shown in Fig. 1.

Having thus described my said invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

A device of the character described comprising a gage-bar having graduations on each of its side faces and on its top face, the graduations on one side being reverse to those on its opposite side and its top, saidga e-bar having in one of its ends a longitudinal y-extending slot forming spring clamping-jaws having in their opposin faces transverse, concave grooves, a penci slidably mounted in said grooves and retained therein in an adjusted osition by the tension exerted upon it by sai spring-jaws, the axis of said pencil being in the same plane with the beginning of the graduations on the to and one side of the gage-bar, a pin passed t rough the opposite end of the gage-bar and providin a markingpoint in the same plane With the eginning of the graduations on the opposite side of the gage-bar, a block slidably mounted on the gage-bar, a set-screw in the top of said block to impinge against the top of the gage-bar and hold the block in an adjusted position thereon, and a pivot-pin inserted in the cen- I vg I 826,618

ter of the bottom of said block, Substantially as described and for the purpose set forth.

In testimony whereof I hereunto affix my signature in presence of two Witnesses.

WALLAOE F. SMALL. Witnesses:

' EDWARD MILLS,

MYRTLE BALLARD.

Images