US22008A - Hoisting-machine - Google Patents

Description

00. /J /0 y! .0. M fm fm @i 772i nasse;

will? AM. PHDTD-LITHU. C0. N.Y. (OSBDRNE'S PROCESS) UNTED STATES A DFFICE.

DANIEL W. BARR, OF LANCASTER, PENNSYLVANIA.

HOISTINGr-MACI-IINE.

To all whom t may concern:

Be it known that I, DANIEL W. BARR, of the cit-y and county of Lancaster', in the State of Pennsylvania, have invented a new and Improved IdIoisting-liiachine; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a perspective view, raised on a scaffold to represent the upper and lower floors, Fig. 2 a vertical View. Fig. 3, the same modified. Fig. i the hoisting tackle and pulleys.

On a frame work, A, A, A, A, Fig. 2, supported by four upright posts, over and above the hatch-way of any building` or structure, are two large drums C, C, on which the rope winds and unwinds by having one end fastened to each, the intermediate portions running over the pulleys on the hoisting tackle K, Fig. 4E and the central pulley J. Atiixed to the underside of the cross piece B, in Fig. 2, said strands of the rope marked l, Q, 3 and 4 in the several figures as clearly shown. The drums C, C, have a shaft secured on the frame A, A, to the outer end of each of which there is a beveled cog-wheel D, D, geared into a similar wheel at right angles thereto E E, on the shaft F, resting on the projecting ends of the frame A, A. This shaft has on the one side a large wheel Gr, grooved on its upper or outer surface, over which a stout rope passes and wedges mto said groove, in the ordinary way, with or without a check piece, said rope passing down to the lower floor, kept taut by means of the pulleys M, M, (and therefore endless), by which the machine can be operated on either floor. On the other end of said shaft F is a cog-wheel, H, geared into the wheel I with a handle, as shown by Fig. l, by means of which ordinary hoisting can be done, without the rope over the wheel Gr which aids in the manner of a balance wheel, or when both are used one is a great assistance to the other.

Fig. 3 represents a modification of the same machine with but one drum and one pair of beveled or spur wheels, operated by the rope in or on the grooved wheel G. The one end of the hoisting rope fastened at L, with one of the pulleys on the hoisting tackle K, of double the size to the other to equalize the motion, thereby gaining power and lessening friction. 7e also use a trap-door T on wheels and iron rails operated by one rope attached to the rear on one side and another to the front on the other side N, N, and pulleys 1*, r, and carried over g, 0, to the winding and unwinding spool-pulley P, on the basement floor, operated by means of the handle at P, thus enabling a person to shut or open each hatch way in succession by a similar arrangement.

The object of the central pulley J, is to keep the burden in the center of the hatchway while hoisting (making the drums narrower and deeper if need be, than the model, is better) by means also of the double pulleyed hoisting tackle K, and drums or attachment, the ropes keep spread and prevents that twisting so annoying, by the use of the ordinary means employed, to the saving of much time and muscular force, and therefore deemed useful as well as novel.

That I claim as new and desire to secure by Letters Patent is The central pulley J, beveled cog wheels and drums C,side wheels H, I, double pulley hoisting tackle K, slide door T, drum and crank P with cord N, the whole combined and arranged substantially as described for the purposes set forth.

D. W. BARR.

Witnesses at signing:

JACOB S'raum ce, F. H. STAUFFER.

Images