US691492A - Pulley-block. - Google Patents

Description

Patented Jan. 2|, I902 J. B.- RUNEY.

PULLE Y BLOB-K. (Application med Oct. 4. 1901.,

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(No Model.)

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No. -69l,492. Patented Jan. 2|, I902.

J. B. HONEY.

PULLEY BLOCK. (Application filed Oct. 4. 1901. (No Model.) 2 Sheets-Sheet 2.

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JAMES BYRON RONEY, OF LYNN, MASSACHUSETTS.

PULLEY- BLOCK.

SYECIFICATION forming part of Letters Patent No. 691,492, dated January 21, 1902.

Application filed October 4, 1901. Serial No. 77,567. (No model) To all whom. it Duty c01wer;z

Be it known that I, JAMES BYRON Ronny, a citizen of the United States, residing at Lynn, in the county of Essex, State of Massachusetts, have invented a certain new and useful Improvement in Pulley-Blocks, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention has for its special object the production of a pulley-block which instead of being applicable only as a straight block or only as a cross-block shall be capable of being utilized as either a straight block or a cross-block, as desired, and of being readily converted from either condition to the other condition without removal of the shackle from any connection with which it may be in engagement.

The invention will first be described in connection with the accompanying drawings, wherein are illustrated different embodiments thereof, and afterward the essential characteristics of the device will be clearly pointed out, and distinctly defined in the claims at the close of this specification.

In the drawings, Figure 1 is a perspective view of one embodiment of my invention, the block being arranged as a straight block and provided with a shackle. Fig. 2 is a similar view of the block arranged as a cross-block and provided with a hook instead of a shackle. Fig. 3 is aperspective view of the hangeremployed in such embodiment. Fig. 4 is a crosssectional view of said hanger, together with the shackle and connecting-pin, when connected to form a straight block. Fig. 5 is a perspective View of another embodiment of the invention. Fig. 6 is a perspective viewof a portion of a triple block adapted to the present invention.

Reference will first be had to the embodiment of the invention shown in Figs. 1 to 4. A shell (designated 1) is shown, which carries a sheave 2. Said shell may be of any convenient construction. For instance, it may be made of metal, as shown in Figs. 1 and 2, or of wood, as shown in Figs. 5 and 6. 3 designates a hanger having a flared aperture 4 through its lower portion, through which passes the upper cross-bar 5 of the shell 1. In Fig. 1, 6 designates a shackle employed in connection with my invention. Instead of a shackle, however, and as the equivalent thereof I may employ a hook, as at 61, Fig. 2, wherever the latter is more convenient to be used. 7 is a pin connecting the shackle or hook with the hanger 3. The pin 7 may be secured to the shackle or hook in any usual or desired manner. Thus in the illustrated construction, 8 8 are small holes through the pin near the extremities thereof. 9 9 represent keys passing, respectively, through the said small holes and preventing accidental withdrawal of the pin from. the shackle or hook while the hook is in use.

In accordance with the present invention the hanger 3 is provided with means for receiving the shackle 6 or hook 61 in either of two or more positions of the said shackle or hook relatively to the pulley. Thus, as herein shown,two or more openings are made through the hanger at predetermined angles to one another, either of said openings being adapted to receive the pin 7 of the said shackle or hook. The most usual arrangement of such openings will be at right angles to each other, and the pin 7 will be passed through one or the other of the openings, according as the pulleyblock is intended for use as a straight block or as a cross-block. Said openings, respectively, are designated 10 11. In Fig. 1 the block is shown arranged as a straight block. In Fig. 2 the block is shown arranged as a cross-block. In order to transform the block from either condition to the other condition, it may be effected by removing one of the keys 9 from the pin 7, withdrawing said pin from the opening in. the hanger in which it is located'for the time being, and removing the shackle or hook from the hanger. Then the shackle or hook will be applied to the hanger at right angles to its first position, the pin 7 being inserted so as to pass through the second opening in the hanger and the key 9 being replaced in the proper hole 8.

The change of the block from straight to cross, or vice versa, may be effected before the said block is put into use or at any time thereafter, and if the latter is the case such change can be made without disengaging the shackle or hook from its connections or overhauling the rope that passes around the sheave.

In the embodiment shown in Fig. 5 the connection between the shell and shackle or hook ICO is constituted of the ordinary iron strap 14, the shell 141 being of wood and the two said parts being arranged in the usual manner. The loop of said strap, in connection with the upper surface of the shell, forms one of the openings to receive the pin of the shackle. Transversely through the parallel portions of the strap, adjacent to the bend therein, holes 15 are formed in line with each other, which together constitute a second opening to receive the pin of the shackle when the block is to be used as a straight block. The mode of altering the block from the straight to the cross condition is efl'ected in the same manner as with the embodiment previously described.

Fig. 6 shows a triple block adapted to the present invention by a change in the usual configuration of the outer strap thereof. designates the shell of such triple block, 26 the middle strap thereof, and 27 the outer strap, all being combined in the usual manner except for the following change: Instead of bowing over from side to side and touching the inner strap only at the crown of the latter the outer strap is turned sharply inward from each side to the base of the loop of the inner strap, and the middle portion of said outer strap conforms to the shape of said loop, so as to aflord parallel faces 28 adjacent to the bend or crown of the strap. Through both straps the holes 29 30 are then formed, they constituting the second opening for the reception of the pin of the shackle or hook. The arrangement is applicable with obvious adaptation to blocks having two sheaves or to those having more than three sheaves.

What I claim is 1. Apulley-block comprising a sheave, a shell for the same, a detachable shackle, and

means for connecting the'shell and shackle at different angles as desired and thereby supporting the same in either of a plurality of positions relatively to the sheave, substantially as described.

2. A pulley-block comprising a sheave, a shell for the same, a detachable shackle, a pin carried by the latter, and a connection between the shell and shackle, provided with a plurality of openings at angles to each other each of which openings is adapted to receive the shackle, whereby the latter may be supported in either of a plurality of positions relatively to the sheave, substantially as described.

3. A pulley-block comprising a sheave, a shell for the same, a shackle, a pin carried thereby, and a connection between the shell and shackle provided with a plurality of openings at angles to each other, each of which openings is adapted to receive the pin of the shackle whereby the same maybe supported in either of a plurality of positions relatively to the sheave, substantially as described.

4. A pulley-block comprising a sheave, a shell for the same, a shackle, a pin carried thereby, a hanger pivoted to the shell and provided with a plurality of openings at angles to each other, each of which openings is, adapted to receive the pin of said shackle whereby the same may be supported in either of a plurality-of positions relatively to the sheave, substantially as described.

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

JAMES BYRON RONEY.

Witnesses:

ROBERT WALLACE, LEPINE HALL RICE.

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