US293607A - Mortising-machine - Google Patents

Description

(No Model.) w.

H. A. WILBURL' v MOBTISING MACHINE.

No. 293,607. Patented Peb IZ, 1884 F-IGJ.

N. PETERS. Phawumo m r'mn Wishingtml. D. c,

1 Unrrsn STATES PATENT QFFICEQ HENRY A. wiLBUn, or CAMBRIDGE, nssrenon or ONE-HALF TO FRANK w. Lown, OF-BOSTON, MASSACHUSETTS.

4 MORTISING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 293,607, dated February 12, 1884.

Application filed May Machines, of which the following is a specification.

The object of my invention is to produce a mortising-machine capable of cutting slots in window-sash frames for the reception of the pulleys, and also cutting recesses at each end of said slots for the reception of the end flanges of said pulleys.

The invention consists in a feed-table for holding the material to be operated upon, which table is capable of being moved in both a longitudinal and transverse direction, by means of which the material is fedto two compound revolving cutters, so that the cutters will first cut slots for the reception of the pulleys and a recess for the side flanges, then be partially withdrawn, so that the inner or smaller cutters will cut recesses at each end of the slots for the reception of the end flanges of the pulleys. When square-end. flanged pulleys are to be inserted, the slots for the main body of the pulleys are first out, then the cutters are changed and the recesses for the flanges cut.

In the accompanying drawings, Figure 1 represents a front'view of a machine embody ing my invention. Fig. 2 is a plan or top view of the same. Fig. 3is an end view. Figs. 4 and represent pieces of material. with slots and recesses cut therein.

A is the main frame of the machine.

B is a sliding table, the edges of which are wedgeshaped, and fit 1 into corresponding guides, O, secured to the main frame. The sliding table B is provided with standards'D, which carry the cutter-spindles E E. The upper one, E, is adjustable by means of screws F. A reciprocating movement isimparted to the table 13 from an eccentric block,H, through connecting-rod G. l

I isa shaft which carries the eccentric block, and also apulley, J, which is driven by beltK from a pulley, L, on the main shaft M, which latter also carries the fast and loose pulleys N N, and a wide pulley, 0, around which pass 22,1883. (No model.)

the belts P P, that drive the cutter-spin dles E E.

E is an idler for taking up any slack in the belt P, caused by the adjustment of the upper spindle, E.

Q Q are brackets secured to the side of the frame A, and each provided on their inner sides with a tongue, on which slides the plate R, having on its under side a nut, 6", through which passes a screw, S, one end of which latter is secured (but so as to revolve freely) to the main frame A, theother' end being provided with the hand-wheel T. On thescrew S are placed check-nuts as, which can headjusted so as to regulate the travel of the plate R.

In the upper surface of the plate Ris cut a recess,with beveled edges, in which thelower portion of a plate, U, fits, so as to slide freely, motion beingcommunicated to the plate U from the hand-lever V through'rod u.

W is an adjustable stop for regulating the travel of the plate U, which stop is fixed to the plate U, and is provided at its outer end with a lug, through which passes ascrew, W, secured to the plate It.

On the screw W are two nuts, '10 w, one on each side of the lug-or stop XV, so that when the plate U is pushed in one direction the stop WV will strike against the nut w, and when pushed in the opposite direction it will strike against the nut to.

a; isa pin for holding the plate U in position 011 plate B, when it is not required to give the plate U an independent movement.

X X are standards on the platev U, against which the material to be operated is clamped by means of a clamp, Y, which is carried by a pillar on the plate Z, secured to the plate U byv means of bolts passing through slots, so that the plate Z can be adjusted according to thethiekness of the material being operated upon.

' To one of the standards X are secured the gages a b. The gage a is for regulating the distance from the end that the hole is to be cut, and b for regulating the distance from the edge of the material.

:For regulating the depth of the cut-at each end of the slot for the reception of the flanges of the pulleys, I-fiX to the plate R a short bar,

to which is pivoted a short arm, d, having a recess to fit over the bar 0.

The operation is as follows: The stops and gages are first adjusted according to the position and length of slots to be cut, and the clamp Yand nuts 8 8 adj nsted according to the thickness of the material to be operated upon. A piece of material is then placed on the machine so that its end will bear against the gage a and its side rest on the gage b. The material is then firmly held in position by turning the clamp Y, which presses it against the standards X X. Thus far the operation is the same in all cases, and I will now first describe the operation for cutting the slots and recesses, as shown in Fig. 4. By turning the hand-wheel T the material is fed toward the cutters until the nut 7' comes in contact with the check-nuts s, when the material will have been bored through the desired depth. At the same time the reciprocating motion of the sliding table 13 will have carried the cutters backward and forward and cut the hole and recess around same the desired length. The arm (I is now thrown down onto the bar 0, and the hand-wheel T turned in the reverse direction until the bar 0 comes under the notch in the arm (I, when it will drop over the bar a and hold it in posit-ion. The pin a; is now removed and the hand-lever V operated, which carries the plate U backward and forward, so that the inner or smaller cutter will cut a recess at each end of the slot already cut. The arm (1 is then raised, and the hand-wheel T turned until the nut rstrikes against the checknut s. The clamp Y is then turned and the material released.

I will now describe the operation when it is required to cut for a pulley with a flange, as

The lever V is then operated, and the lengthof the recess is regulated by the travel given to the plateU, as above described, and a recess, of the shape shown in Fig. 5, will be out,

which is suitable for round-end pulleys, but

also suitable for square-end pulleys, only requiring the corners (shown in dotted lines) to be cut out with a chisel.

hat I claim as my invention is- 1. In a n1ortising-maehine, the combination of the plate It, sliding in brackets Q Q, and 0perated by the screw S,through the nut r on plate R, and the sliding plate U, operated by the lever V and connecting-rod u, the screw IV, adjustable stop IV, and check-nuts w '10, all as shown, and for the purpose set forth.

2. In a mortising-maehine, the combination of the sliding plate R, the bar 0, fixed to the plate R, the adjustable slide e, attached to the bracket Q, and the arm d, pivoted to the slide 0, and provided with a recess fitting over the bar 0, for the purpose of regulating the depth of out at each end of the mortise for the reception of the pulley-flanges, as set forth.

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

HENRY A. \VILBUR. Witnesses:

J. H. ADAMS, F. V. LowE.

Images