US124797A

US124797A - Improvement in miter-boxes

Info

Publication number: US124797A
Authority: US
Publication date: 1872-03-19
Anticipated expiration: 1889-03-19

Description

Improvement in Mitre Boxes.

Paten ted March 19, 1872.

PM. $7M

the point marked B, to be cut away, beveled,

which chainfer continues at the same angle up THOMAS BROWN DOOLEY, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MlTER-BOXE S.

Specification forming part of Letters Patent No. 124,797, dated March 19, 1872.

I, THOMAS BROWN DooLEY, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and Improved Miter-Box, of which the following is a specification:

*atnre and Object of the Invention.

The nature of my invention is that of a tool consisting of a handle, to one end of which is attached ablock of metal, grooved and shaped at its end in a peculiar manner, and bearin g a wedge passing at right angles through the sides of the groove; and the object is to fashion the ends of the brass or lead rules used by printers at at angle of forty-five degrees.

'Desem'ptton of the Drawing.

Figure l is a perspective view of my device. Fig. 2 is a vertical cross-section of the same at the line of the wedge shown.

Description of the Invention.

In the drawing, A, Fig. 1, is the handle of my device, (which device is all made of meta1, preferably cast-iron.) At the left-hand end of the handle it is seen in Fig.1 to widen and flatten, (see the lower (grained) portion of Fig. 2,) and the sides are turned up at right ngles to the base, (see Fig. 2,) the lower or left-hand end of the device thus forming a trough whose corners are rectangular. The left-hand end of the device is seeninFig. 1 at or chamfered to an angle of forty-five degrees,

and along the ends of the upright sides of the channel. At the'point marked O in Fig. 1,

(see cross-section also in Fig. 2,) the bottoinof the channel is grooved in a direction coincident with that of the axis of the device. 1 1),

Figs. 1 and 2, is the wedge, which passes, by the apertures seen in Fig. 1, through the upright sides of the channel, projecting at each side, as seen in the drawing. E E", (the latter in dotted lines,) Fig. 1, are two downward projections, rounded at their corners, cast upon the lower surface of the device and passing across it at right angles to its axis. (See also the horizontal shading-lines at the lower part of Fig. 2.) These projections are simply standards or legs. In practice, I case-harden the chamfered end of my device, or sometimes face it with a steel plate, screwed on.

And the operation of the device is this: The device is held by the handle in the left hand.

The brass rule is laid lengthwise in the channel, with its squared end projecting slightly beyond the left-hand end of the device. The wedge D is then driven through the apertures in the sides of the channel till it holds the rule tightly on the bottom of the channel.

Claim.

I claim- The miter-box herein described, consisting, essentially, of the handle A, bevel B, groove 0, projections E E, and the wedge D, substan- Y tially as shown and for the purpose described.

THOMAS BROWN DOOLEY. Witnesses:

LEMUEL P. JENKS, GEORGE L. DYER.

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