US258015A

US258015A - Laying-out machine

Info

Publication number: US258015A
Authority: US
Publication date: 1882-05-16
Anticipated expiration: 1899-05-16

Description

(N0 Mode'l.)

J.. A. BROWNFIELD.

j LAYING OUTMAGHINE. v No; 258,015. Patented May16, 1882-.

. UNITED STATES PATENT OFFICE.

JAMES A. BROWNFIELI), OF NEWPORT, KENTUCKY.

LAYlNG'-OUT MACHINE.

SPECIFICATION forming part of Letters Patent No. 258,015, dated May 16, 1882.

I Application filed March 6, 1882. (No-model.)

To all whom z't may concern:

Beit known that I, JAMES A. BROWNFIELD, a citizen of the United States, residing at Newport, in the county of Campbell and State of Kentucky, have invented certain newand useful Improvements. in Laying-Out Machines, of

which the following is a specification.

This invention relates to those machines which are employed for laying out simultaneously on both edges or sides of a stile or other piece of stuff a series of marks or indentations where mortises are to be subsequently cut;

and myimprovement comprises a table or frame upon which the stuff is supported, a horizontal]y-reciprocating marker-rail operated by a treadle movement, and a stationary marker-rail capable of being adjusted parallel with reference to said reciprocating rail, as hereinafter more fully described, and pointed out in the claims. Furthermore, my invention comprises a novel combination of cutter-heads or slides armed with marking-points, as hereinafter more fully described, and pointed outin the claims.

In the annexed drawings, Figure l is a plan of my laying-out machine, the position of the piece of stuff being indicated with dotted lines. Fig. 2 is a vertical section of the machine, taken in the plane of the operating-treadle. Fig. 3 is an enlarged vertical section of the adjustable marker-rail and its attachments. Fig. 4 is a plan of a pair of cutter-heads arranged in close proximity to each other.

The bed or table A consists of an open frame that allows chips,sawdust, &c., to fall through, so as not to interfere with the proper working of the machine, said frame having near either ble is aroek-shaft, F, having at its mid-length an arm, f, connected by a rod, g, to the operat- The front face of this ing-treadle G. The opposite ends of this rockshaft carry cranks H H, connected by links h h to the reciprocating rail -or beam D, in order that any motion of the treadle G may be directly communicated to said rail or beam.

I is a retraetile spring, secured to the rear of frame A, and having its ends connected to the rail D by rods 13 i but, if preferred, this spring may be located under the treadle G, as seen in Fig. 2, in which event these rods would be dispensed with.

The adj ustable marker-rail J is provided with a series-of slides and points similar to the devices attached to the other rail, D, and is seicurely locked in position by bolts K K, traversing slots L L of the table, as more clearly and thereby prevent accidental shifting of the V sliding head N.

S is an adjustable stop, against which abuts one end of the stile or other piece of stulf, T.

\Vhon my machine is in its normal position the reciprocating rail or beam D is retracted by the spring I, and-the various slidesor cutter-heads Eare set oft from an ordinary staff, gage, or pattern-rod, so as to bring the markers e or P in a proper position to indicate the exact placeswhere' the mortises are to be made in the piece of stud T, which latter rests directly on the table A and has one of its ends abutting against the stop S, as suggested by the dotted lines in Fig. 1. Treadle G being now depressed, the rail D is advanced accordingly, and its markers,'together with those of the stationary rail J, simultaneously incise the opposite edges of the piece T. If the stuff should be quite narrow, rail J must be set'comparatively close to the rail D but for wider stud said rail J should be. retracted accordingly, the bolts K K securely holding it in any desired position. As the stuff rests wholly on the extended surface afi'orded by the table A, there is no danger of the markerpoints-be- "e are forced into very hard wood.

I claim as my invention 1. A laying-out machine consisting of the table A, provided with a pair of grooves, B B, traversed by the slides (J O of reciprocating marker-rail D, which latter is operated by a treadle and rock-shaft in the manner described, another marker-rail, J, being secured to said table with looking devices K K L L, so as to be adjusted parallel with reference to said rail D, both of these rails being furnished with shiftable cutter-heads armed with points, for the purpose specified.

2. In combination with the reciprocating marker-rail D of a laying-out machine, the rock-shaft F, having cranks H H and links h h, which links are located at some distance from the center of said rail to prevent it springing.

3. A marker-rail havinga longitudinal dovetail groove,j, to receive the tongue 12 of the shiftable cutter-head N, whose projecting base 0 is armed with the points P 9, said head being secured in position by the set-screw R, as herein described.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES A. BROWNFIELD.

Witnesses:

JAMES H. LAYMAN, SAML. S. CARPENTER.