US91892A - Charles winterbottom - Google Patents

Description

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CHARLES WINTERBO'ITOM, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T-O W. S. WINTERBOT-TOM, OF SAME PLACE.

Letters Patent No. 91,892, dated June 29, 1869. i

IILMPIIR.OVEIi/[ENT IN 'COMBINED TRY-SQUARE AND BEVEII.

The Schedule referred to in these Letters Patent andmakg-part of the saine;

To all whom it 'may concern:

Be it known that I, GnAnLnsWINTERBoTToM, of Philadelphia, Pennsylvania, have invented an Improved Square; and I do hereby declare the following to be a full, clear, and exact description of the same.

My invention consists in simply taking the common square and cutting the top of the stock at anangle, in the mannerdescribed hereafter, so as to mark mitrelines, adding to the value of the square, and Without increasing its cost of manufacture.

In order to enable others-skilled in the art to make and 'use my invention, I will now proceedto describe the mode of constructing and using the same, referencebeing had to the accompanying draWing,-which forms a part of this specification, and in which- Figure 1 represents a side View, and

Figure 2, a View of the upper edgeof my improved square. l j

A isthe wooden stock, and B, the steel blade of the square, the former beingsimilar to the stock of the ordinary square in general use among carpenters, excepting the top, irhich is cut atan angle of fortyve degrees, x, on each side of the steel blade, from near the left-hand Iside at top, down toward the right or faced side'a.

The blade B is similar to that of an ordinary square.

The'angular part a: can be longer or shorter, as desired, and its great advantage will be more clearly comprehended by supposing the red lines y y to representa strip of board, on which it is desired tor mark a mitre, t. The steel blade B is placed upon the wooden strip, and ,the angular portion of the stock :c is held irmly against the outside edge of y, and the top of the blade B is moved tothe point, and a line made the entire length of the blade if necessary.

By reversing the. square, a mitre-line, quite the opposite of the one shown, can be produced. l

It is apparent that my improvement renders it en- I tirely unnecessary to use any other or separate tool, in producing a mitre of forty-five or less degrees, as the angle at :v can be less than forty-five degrees, if desired, and the square will not exceed, the common kind in price to manufacturer.

What I claim as 'my invention, and desire to secure by Letters Patent, is-

A square, with the stock A cut at an angle, x, at, the top, near the left side, down toward the right side a, forfthe purpose specified.

CHARLES WINTERBQTVTOM.

Witnesses:

WILLIAM B. CoA'rEs, WILLIAM S. WINTERBOTTOM.

Images