US152488A - Improvement in carpenters gages and trams - Google Patents

Description

a. F. HAWLEY'. Garpente-rs" Gages and Trams.

Patented June 30,1874.

UNITED STATES PATENT OFFICE.

GEORGE F. HAYVLEY, OF GRAND RAPIDS, MICHIGAN.

Specification forming part of Letters Patent No. 152,488, dated June 30, 1874; application filed December 19, 1873.

To all whom it may concern:

Be it known that I, GEORGE F. HAwLEv, of the city of Grand Rapids, in the county of Kent and State of Michigan, have invented a certain new and useful Garpenters Gage and Tram, and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters ofreference marked thereon, and the sameare made a part of this specification.

The nature of my invention consists in the combination, in a small carpenters tool, of a thumb-gage, a single-mortise gage, a doublemortise gage, and a tram for striking arcs or arches, and also as a panel-gage, constructed and used substantially as shown in the drawings and described in the specification.

In the drawings hereto annexed, Figure 1 is a perspective view of my invention arranged as thumb-gage. Fig. 2 is an elevation of my invention arranged to be used either as a tram or panel-gage.

In Fig. l, T is a hollow cylinder, provided with five spur-collars, marked S, S S, 8*, and Each of these spur-collars is adjustable longitudinally upon the cylinder T, and each spur-collar is provided with a set-serew, as shown in the drawings. 9 and g are grooves running the entire length of cylinder T, and the set-screws in the spur-collars are so arranged that their points rest in the groove g, thereby preventing rotary motion by the spur-collars, and keeping the points of the spurs in line. The spurcollars can be readily adjusted in any required position on the cylinder T. F is a cylinder, made of convenient size to be readily grasped in the hand, and servesas a handle for the tool, as a receptacle of the spur-collars when not in use, and also as the gage head or rest. It is provided with the set-screw Z, the lower point of which rests in the groove g, and the cylinder F is also provided with a small tongue, which moves in the groove the object being the more effectually to retain the large cylinder in position, and to prevent any rotary motion of the cylinder T.

In Fig. 2, It is a rod, constructed of such size as to move readily in the cylinder T; and it may be made of the same length as cylinder T, or a little longer, so as to project, as shown in Fig. 1. This rod R has the tram-head H, provided with a pencil-holder and set-screws, as shown, and also the spur 9c, and is adjusted longitudinally in the cylinder T, and also rolls in it, so as to turn the point of the spur :r in any direction at right angles with cylinder T. G is a spur turning on a rivet, so arranged that when open its point is in a line with the points of the spurs in the spur-collars, and when closed it is contained in the gage-head F, as shown in Fig. 1.

In using my invention as a thumb-gage I close the spur (3, place spur-collar S as shown in Fig. 2, and then adjust spur-collar S at the required distance from the gage-head F; then the distance between the head F and collar, or, rather, the spur in spur-collar S will gage the thickness of the stock, and the distance between the head F and the spur of spur-collar S will gage the width of the stock. I

In using my invention as a thumb-gage, all the spur-collars except S and S should be placed within the cylinder F.

In using my invention as a single-mortise gage, S may occupy the position shown in Fig. 2, or may be placed in the head F, and two spur-collars, S and S be adjusted in the manner shown in Fig. 2, and the spur on S will gage one side of the mortise, and the spur on collar S will gage the other side of the mortise.

In using my invention as a double-mortise gage, spur-collars S S S and S can be adjusted on the cylinder T in the required position, and then the spurs 011 collars S and S will gage one set of mortises, and the spurs on collars S" and S will gage the other set of mortises.

In using my invention as a thumb-gage, or as a single or double mortise gage, the spur U is closed and the tram-head turned so as not to interfere with the small spurs, as shown in Fig. 1, or the tram-head and the rod B may be removed altogether, thus rendering the gage lighter and very readily handled.

In using my invention as a tram, the spur C is set as shown in Fig. 2, and its point placed at the center of the required circle 5 then adjust the tram-head at the required distance. fastening it by means of the set-screw H, and strike the circle either by the spur a: 01' penoil, the part F being adjustable on the cylinder 1, and the rod 1t adjustable in the same cylinder. The spurs O and a: may be brought "ery close together or carried far apart, so as to strike large or small circles, at pleasure.

111 using my im'ention as a panelgage, the stock is gaged between the head F and the spur 00.

Having thus described 11)) invention, 1 claim As a new article of manufacture, the combined gage and train, when constructed substantially as and for the purposes described.

Dated December 13, 1873.

GEO. F. ILUYLEY.

Witnesses:

lHARLES A. RENWIGK, EDWARD TAGGART.

Images