US333525A - Half to feedeeick b - Google Patents

Description

(N0 ModeL) 3 T. M. KENNA.

AUTOMATIC REVERSING MEGHANISM. No. 333,525. Patented-Jan. 5, 1886.

ATTORNEY NITED STATES PATENT OFFICE.

THOMAS M. KENNA, OF NEW HAVEN, CONNECTICUT, ASSIGNOR OF ONE- HALF TO FREDERICK B. FARNSWORTH, OF SAME PLACE.

AUTOMATIC REVERSING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 333.525, dated January 5. 1886.

Application filed November 17, 1885. Serial No. 183,136. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS M. KENNA, a citizen of the United States, residing at New Haven, in the State of Connecticut, have invented a new and useful Improved Automatic Reversing Mechanism, of which the following is a specification.

The object of my invention is to provide automatic reversing mechanism for driving machines which revolve alternately in opposite directions.

The invention consists in a novel arrangement of bevel friction-wheels, and in the shipping mechanism for operating the same, as hereinafter more fully described and claimed.

In the accompanying drawings, Figure 1 is an end view of a washing-machine fitted with my improved reversing mechanism. Fig. 2 is a plan View of the mechanism, and Fig. 3 shows a modification of the shipping-yoke.

Referring to the drawings, A designates a beveled friction-wheel or conical disk secured on a shaft, b, which is journaled in the caseO of a washing-machine and drives a rotating drum or barrel inside the case. A shaft, 6, is placed centrally in front of the disk at right angles to its axis, and journaled in suitable bearings, z, which are bolted to the case 0. The shaft carries a pair of friction-cones, d, which are arranged diametrically opposite to each other on the face of the disk in j uxtaposition to the beveled surface thereof. The cones accurately fit the bevel of the disk, and their shaft is adapted to slide endwise in its bearings sufficiently to bring either of the friction-cones into working engagement with the disk A, as shown. A screw-thread or worm, f, is formed on the shaft 6 midway between the friction-cones d. A worm-wheel, g, intermeshes with the screw f, andturns on a stud or pin, h, which is secured in a suitable frame, It, fastened to'the bearings i. The wormwheel carries a cam,m, on its face, and rotates once while the shaft makes several revolutions. A shipping yoke, Z, is mounted on the shaft e between the cones, and slotted to slide on the stud h,which supports the wormwheel 9. The stud projects through the slot and receives a nut, n, which secures both the yoke and worm-wheel in place. Friction collars or washers r are arranged on the shaft against the inner end of each friction-cone d,

recess and adjusted by set-screws.

and the yoke extends between the washers, with its ends bearing against them. The cam m fits into a suitable guideway, r, recessed in the side of the yoke Z, and imparts intermittent reciprocating motion to the yoke as the worm-wheel revolves. The yoke moves the friction-cones and shaft 6 endwise, and brings each of the cones alternately into contact with the friction-disk A.

Constructed as above described and shown, the operation of my improved reversing mechanism is as follows: The shaft 6, with its friction-cones d, is revolved continuously in one direction by the motive power of the machinery. As the friction-cones d are on opposite sides of the bevel-disk A, and are alternately brought into contact with it, they therefore drive the disk successively in opposite directions. Suitable means (not shown) may be provided to adjust the bevel-disk A longitudinally and hold it in proper proximity to the friction-cones d. Instead of sliding the shaft endwise, the cones may be moved correspondingly thereon by suitable means; but there is no objection to a slight longitudinal motion of the entire shaft,worm, and drivingpulleys t, and this construction is preferable, on account of its simplicity and cheapness. When it is desired to operate a metal-planer or similar machine by this shipping mechanism, the worm and wheel may be dispensed with, and the yoke L may be actuated directly by the planer-dogs or by corresponding reciprocatingmechanism. Thewearofthecammmay be taken up, if required, by means of suitable gibs or guides arranged at the sides of the If desired, springs (not shown) may be placed back of the gibs, which will then be self-adj usting. The cones d may be made of any suitable material; but they are preferably made of paper, leather, or rawhide, whereby their drivingpower is increased, and when the bevel of the cones is such as to wedge hard against the friction-disk the efficiency of the mechanism is still further increased.

I claim as new and desire to secure by Letters Patent- 1. An automatic reversing mechanism consisting of a beveled friction wheel or disk, a pair of friction-cones mounted on a shaft at right angles with the axis of the disk and on opposite sides of its face, and a shipping deworm-wheel engaging therewith and carrying vice actuated alternately in opposite direca cam, on, and the shipping-yoke Z, reciprotions by the movement of the revolving cated by the cam and adapted to slide the :5

mechanism, and adapted to reciprocate the shaftendwise in its bearings and successively 5 cones lengthwise and bringthem successively. engage the friction-cones with the disk, subin contact with the bevel surface of the disk, stantially in the manner and for the purpose substantially in the manner described. specified.

-2. In combination, the beveled wheel or T diskA, the pair of friction-conesd d, mounted THOMAS KEL IO on a shaft at right angles with the axis of the \Vitnesses:

disk and on opposite sides of its face, a screw I GEORGE L. BARNES, 0r worm formed or arranged on the shaft, 21; DAVID K. ANDREWS.

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