US144411A - Improvement in tenoning-machines - Google Patents

Description

ZSh'eetS--Sheet l.

.|. RICHARD S.

Tanning-Machines.

Patented` Nov. H, 1873` "2 Sheets--Sheet 2.

l. RICHARDS. Tunning-Machines.

\ UNITED STATES PATENT QEEICE JOHN RICHARDS, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN TENONING-MACHINES.

S pecication forming part of Letters Patent No. 144,41 l, dated November 11, 1873 application filed October 16, 1873.A

To all whom it may concern:

Be it known that I, JOHN RrcnARns, of Philadelphia, Pennsylvania, have invented a Tenoning-Machine, of which the following is a specification y The nature of my invention consists in certain improvements in machines for tenoning wood-work; and constitutes still further improvements in the same class of tenoning-machines on which Letters Patent were mgranted to J ohn Richards, the present petitioner, and Lucien H. Berry, as joint inventors, and bearing date of October 7, 1873. The principle of operation, so far as the attainment of certain results, is the same in this invention as in the former one cited, and the improvements relate to a dijferent and more simple arrangement of the mechanism, the objects' being, lirst, toreduce the height of the machine, and thereby save material used in the framing, and secure a better foundation-support for the machine; secondly, to avoid the necessity of counterweighting or balancing the cutter-spindle and its attachments; and to avoid, also, the danger that may arise from the breaking of the belt-chain or other connection by which the counter-weight is suspended.

In the drawings, Figure l is a front view of a tenoningmaehine embodying my improvements. Fig. 2 is a side view ofthe same, and Fig. 3 a plan or top view of the machine.

A is the main frame, made, by preference, of iron. F F are short tables, bolted to each side of the main frame A, to support the lumber G.

d is the cutter-spindle, and e the cutter-heads.

I I are clamps, to hold the lumber when acted upon by the cutters. m is a strong sliding frame, moving in guides formed in the main frame A, and is operated by the screw n and the crank O, which serves to draw the frame m, with the cutters, across the end of the lumber C, forming tenons, as will be hereafter more fully explained. 1' is the driven pulley, and s the driving-belt, which passes to the spindlepulley lr from another pulley, `with its axis in a horizontal position. t and u are brackets, to support the spindle d-one placed on the top,

and the Vother on the under side, of the frame l m. A single one of these brackets is, in most cases, all that is required-the bottom one, t, by preference-leaving the top of the spindle d free to receive cutter heads or tools without removing the bearing B.

The operation of the machine is as follows: To tenon a piece at each end, the cutter-spindle d and cutters c are brought forward to the position indicated by dotted lines in Fig. 2. The lumber is thenV placed in position on the tables F, on either side of the machine, as the direction of rotation may determine, and is clamped by the screws I. The cutters are then moved away from the operator, and across the end of the lumber (l, by turningthe handle O until the cutters are entirely behind the lumber C, as shown in the full position, Fig. 2. This permits the lumber (lv to slide past the cutters until it reaches a proper position to form the tenons at the other end, w, the first tenons, a', being already completed. The frame m and the cutters e are next brought forward to the position from which they were irst moved to make the tenons w, and are ready to operate upon the first end of a second piece.

Having thus described the nature of my invention, and the manner of operating the same, p

I claim- The combination of a sliding frame, fm, with a vertical spindle, d, and the two tables F F in a woodtenoning machine, arranged and operating substantially as hereinbefore specified.

JOHN RICHARDS. Witnesses:

L. H. BERRY, JAs. S. CRoss.

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