US351820A

US351820A - Tet square

Info

Publication number: US351820A
Authority: US
Publication date: 1886-11-02
Anticipated expiration: 1903-11-02

Description

(No Model.)

`MP. WARD.

TRY SQUARE.

'Patented Nov. 2

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I UNIT-ED STATES l. PATENT Ormea. y

MATTHEW P. WARD, OF MOUNT OAItMEL, PA., ASSIGNOR OF APART TO DAVID O. HAAS ANDWALTON H. MONTELIUS, BOTH SAME PLAGE.

TRY-SQUARE.

SPECIFICATION formingpart of Letters Patent No. 351,820, dated November 2, 1886.

Application filed May 12, 1886. Serial No. 201,974. (No model.)

To @ZZ whom/ may concern:

Be it known that I, MATTHi-lyr P. WARD, a

' citizen of the United States, residing at Mount A so that its Carmel, in the county of Northumberland and State of Pennsylvania, have invented a new and useful Improvement in Try-Squares, of which the following is a specification. K

My invention relates to improvements in trysquares 5 and it consists of the peculiar construction and arrangement of parts, substantially as hereinafter fully described, and particularly pointed out in the claims.

The object of my present invention is to provide a try-square which is especially adapted for use by engineers in tightening up'the packing in piston-rods, slide-valve rods, Snc., and which can be used upon vcylindrical or plane surfaces With equal facility, and which shall also be simple and strong in construction and easy of ready manipulation and operation.

In the accompanying drawings, Figure l is a perspective view of rnyinvention. Fig. 2 is a side elevation thereof, and Fig. 3 is verse sectional View through the stock on the line .fr fr of Fig. 2..

Referring to the drawings, in which like letters of reference 'denote corresponding partsin all the gures, A designates the blade of my improved try-square, which is made of steel or any other suitable metal and material, and provided with a scale of any suitable character, and subdivided Vinto spaces of any desired length on one or both of its faces; and B designates the stock which is secured to the blade. The end of the blade where it is connected to the stock is provided with a tongue, a, that provides a shoulder, c', between the ends 0f the blade and the stock, and when the blade is secured in the stock the tongue a thereof is fitted in a mortise, b, at the upper end of the stock, outer edge lies iiush with the end of the stock, and the shoulder a of the blade projects beyond the end of -the stock, for a purposepresently described.

The upper ortry face, c, of the stock is arranged at right angles to the inner edge of the blade, and in this face is formed a recess, d, in which is tted a level-bulb, d', of any preferred construction, this bulb being retained in place a trans-V 'the way ofthe stock, it is turned by means of a plate, d2, or any other suitable means. The device is thus adapted for use as a spirit-level, to determine the horizontality of an object or piece of Work by placing itagainst the same, or to ascertain the perpendi'cularity of the work by placing the blade A against the Work.

The stock B is made of any desired or preferred material, and the lower face thereof, opposite to the try or upper face, c, is provided with a longitudinal groove, D, the sides of which are arranged at rightl anglesto each other, and the' outer edges 0f the sides are beveled or inclined atan angle to the right-angled sides, as at e, so that the stock can be fitted or adjusted upon a cylindrical as well as a straight or plane surface. are also provided with the right-angled grooves E and F, and the edges of the sides thereof are also beveled or inclined, as at g, similar to the .edges of the groovesD. v

As hereinbefore mentioned, thetrysquare is especially adapted for use by engineers and others in squaring up a cylindrical object, and I will now proceed. to describe the ina-nner of using the devicein a steam-engine.

The side faces of the stock 7 In tightening up the packings in moving j oints-such, for instance, as in piston-rods or slide-valve rods-the lower-face of the stock is adjusted so that its edges bear against the periphery of the rods, and allowing the outer edge of the blade to touch or come in contact with the gland, and it can at once be seen or ascertained whether the gland is true with the .rod at the top, and by placing the stock so thatthe edges thereof come in contact with one of the sides of the rod it can likewise be ascertained Whether the gland is true with the sides of the rod. Vhen the bolts or burrs are in or adjusted to bring its lower groove, D, out of the Way, and bring the side grooves into play or position for use, and the horizontality of the rod 'or rods can also be determined by the use of the spirit-bulb. Some of the glands of a steamengine are bunched7 out from various causes, and this leaves an enlargement around the oritice of the gland, which Would prevent' the blade of the square from fitting up against the gland; but by means of the projecting shoulder a at the end of the blade this difficulty is avoided, as will be readily'seen.

It will thus be seen from the foregoing description that Iprovide a try-square which can be adjusted for use very easily and readily upon cylindrical or circular pieces of machinery and other devices as well as straight or plane surfaces, and that it can also be used to ascertain the horizontality or perpcndicularity of objects, &c.

I am aware that it is not new to provide a try-square with a metallic stock having longitudinal grooves; but in all such cases known to Ine the grooves are curved, but not rightangledin cross section, and are formed therein for the purpose' of lightness iu the construction ofthe handle.

By means of the beveled edges to the sides of the right-angled grooves the device adapts or adjusts itself upon either' cylindrical or straight surfaces, and by the shoulder a', at the end of the blade, the square can be adjusted in small places where it is difficult or impossible to use the blade itself.

I attach especial importance to the rightangled grooves formed longitudinally of the stock, and having the sides arranged at right angles to each other and provided with the beveled outer edges, and to the shoulder a at the end of the blade and stock, as therein lies the gist of iny invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A try-square comprising a blade, and a stock arranged and connected to the blade at right angles thereto, and provided with a longitudinal groove having its sides arranged at right angles to each other, substantially as de- 4o scribed, for the purpose set forth.

2. As a new article of manufacture, a trysquare comprising a blade and a right-angled stock, the blade being secured to one enel of the stock so as to provide a projecting snoulder that lies at right angles to the end of the stock, substantially as described, for the purpose set forth.

3. As a new article of manufacture, a trysquare comprising a blade, a stock secured thereto at right angles and having a longitudinal groove the sides of which are arranged at right angles to each other and beveled or inclined outwardly at their free edges, substantially as described.

4. As a new article of manufacture, a trysqnare comprising a blade having a tongue, a, and a shoulder, a', and a stock having the straight try-face and a inortised end, in which the tongue of the blade is secured so as to lie flush with the end thereof, the said stock being further'4 provided with longitudinal grooves having their sides arranged at right angles to each other and their outer edges inclined or flared outwardly, substantially as described.

In testimony that I claim the foregoing as my own Ihave hereto affixed my signature in pres ence of two witnesses.

li MATTHEW P. WARD.

mark.

Vitnesses:

J. WILSON, ANNIE THOMAS.