US904003A - Chamfer-gage. - Google Patents

Description

A. E NALDRETT.

GHAMFER GAGE.

APPLICATION FILED JUNE 10, 1907.

Patented Nov. 17

19i m macs ALBERT E. NALDRETT, OF OSHKOSH, WISCONSIN.

CHAIVEER- GAGE Specification of Letters Patent.

Patented Nov. 17, 1908.

Application filed June 10, 1907. Serial No. 378,224.

T 0 all whom it may concern;

Be it known that I, ALBERT E. N ALDRETT, a citizen of the United States, residing at Oshkosh, in the county of WVinnebago and State of \Visconsin, have invented certain new and useful Improvements in Ohamfer- Gages, of which the following is a specification.

The invention relates to an improvement in gages of that class which are used in the work of laying off and cutting bevels, and in the determining of proper points and angles in work of all kinds where cutting and marking of solid material is required.

The object of the invention is to form a handy and compact tool which will combine a chamfered gage, a miter gage and a center gage for round work, and also is adapted to be used as a corner scribe.

WVith these and other objects in view, the invention comprises certain novel constructions, combinations and arrangements of parts as will be hereinafter fully described and claimed.

In the accompanying drawing z Figure 1 is a perspective view of the present invention. Fig. 2 is an end elevation of Fig. 1. Fig. 3 is a side elevation. Fig. 4 is a top plan view, and Fig. 5 is a cross section through Fig. 4 on line 5, 5.

A device embodying my invention comprises essentially two plates designated in the accompanying drawings by 10 and 11, which are situated at right angles to each other, and are formed in one piece. These plates are cut away at their adjoining edges at 12, and are beveled at their ends 13.

The edges 14 of the cut away portion are beveled in relation to the plates 10 and 11. The bevels 13 of the plates 10 and 11 are formed at an angle of forty-five degrees to the ends of said plates. The ends of the cut away portions 12 are also formed at an angle of forty-five degrees to the edge of 14, thus making all the angles formed in the two plates at angles of forty-five degrees.

It will be noted that the outer edges of the plates are beveled at 15 and 16.

In using this device, the instrument is placed over the end or edge of a board, and when it is in this position, equal angles and distances are marked off in both the planes which are at right angles to each other. This has a distinct advantage in mitering where the forty-five degree angles are supposed to be formed in each plane and to be similarly placed. Should it be desired to form a chamfered edge, the instrument is then used as a chamfer gage, and it is designed to measure ofi the desired depth of the cut to be formed. This is done by using the cut away portion 12 which is formed at the juncture of the two plates, and which consequently fits over the edge of the board or other material used. It will also be found that this device can be very eifectively used in round work where a center gage is required. Another important feature is that it is designed for use as a corner scribe in marking oii angles when fine work is to be produced.

What I claim is A gage comprising integral plates disposed at right angles to each other, and with a slot formed at the junction of the plates, the edges of which are disposed at an angle of 45 to the sides of the respective plates, and the ends of which are disposed at an angle of 45 relative to the line of junction of the two plates, one end of said plates being beveled at an angle of 45 to the line of junction of the plates, and the edges of the plates beveled at an angle of 45 to the sides of the plates.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALBERT E. NALDRETT.

Witnesses WV. WV. ATnnrIoUsE, N. J. ORoURKE.

Images