US108875A - Improvement in try-squares and levels - Google Patents

Description

niet tatca vcv HENRY L. BUeKWALTEaor LIMERieK TOWNSHIP, PENNSYLVANIA. .Y

To (all whom it 'may conectan: y

Be it known that I, HENRY L. BUeKwAL'rnn, ot' the township ot Limerick, in the county of Montgomery and State of Pennsylvania, have invented a Gombined Try-Square and Level, ofwhieh the following isV a s]neiiication, reference beinghad to the accompanying drawing. v

M y invention relates to tools ier use by carpenters and other mechanics; and

l t consists in a novel construction and combination ot a try-square and spirit-level, as vhereinafter more fully explained.

Figure lis a perspective view ot' the combined tool, complete.;

Figure 2 is a transverse section 'ou the line :v of tig. l; and I lfigure 3 is a similar view on the line y y of fig. l.

ln many mechanical operations it is desirable to have both a square and a spirit-level ready for use at will, and to accomplish this object l combine the two in one, in such a manner as to produce a single tool capable of heilig 'used for the two-fold purpose ot a try# square and a level.

ln making this combined tool, l use the ordinary sleel blade A, and secure it to a metallic handle, B. rhis handle is composed ot' two skeleton plates, which are exact duplicates, 4placed face to face, and firmly united by rivets, as representedin the drawing.

lhese plates Vare. cast with a recess in their adjoining faces at one' end, ot' proper size to permit the end ol' the blade A to be inserted therein, where it is securely fastened by rivets, as shown in figs. l and 2.

rlhey are further formed with a longitudinal cavity in their adjoining their lower edge, these faces, near cavities heilig semicircular in their eross-seetion, so

that, when the two parts are united, they will formA a circular cavity or chamber about half the length of the handle, for the reception of a glass tube containing a suitable liquid, the same as is generally employed in spirit-levels, and as represented by C, igs. 1 and 3.

\ lhe handle is provided with a long transverse open ing directly over the tube C, with a vertical opening leading from it down to the tube C, to enable the latter to be readily seen. l

Over this tube C is placed a metal slide, '1), which has vits edges bent downward and engaging under corresponding flanges formed on the sides just over the tube C, so as to hold the cover D in place, and, when necessary, permit it to be slid to and fro, and thus cover the tube U, to protect it from injury or uncoverl it for use'when desired.

The plates forming Vthe handle will, of coulse, be planed or ground on their outer edges, so as to make them-true and smooth, they being formed with a projecting iiange around their edges, as represented, to give a broad surface and firm bearing, the balance being made thin and li ght as possible consistent with the requisite strength.

When thus constructed, the whole forms a very compact, neat, and convenient tool.

Having thus described my inventitm,

\Vl 1at I claim is- A combined try-square and level, having its handle composed otfthe two metallic plates B, said plates being formed with recesses or cavities on their inner faces,

.so as to confine the spirit-level tube and the blade "between them, when united, substantially as described.v

HENRY L. BUOKWALTEL.

"itnesses SOLOMON S. MrLLs, 'Davis llAUsn.A

me effet

Images