US1462630A - Brown e - Google Patents

Description

B. E. BARNES PULLEY BLOCK July" 24,' 1923.A

Filed June 8, 1922 aww/141101,

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Patented July ze, 1923.

UNITED STATES PATENT orner.

BROWN E. BARNES, OF PORTLAND, OREGON, ASSIGNOR TO WILLAMETTE IRON & STEEL WORKS, OF PORTLAND, OREGON, A CORPORATION OF OREGON.

PULLEY BLOCK.

Application iled June 8, 1922. Serial No. 566,862.

To all whom t may concern:

Be it known -that I, BRowN E. BARNES, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented new and useful Improvements in Pulley Blocks, of which the following is a specification.

This invention is designed to provide a closure for the end of a pulley block. Pulley blocks, as ordinarily constructed, espe cially the heavy type of pulley blocks used with logging engines have the cheeklpieces secured to each other at the end opposite the shackle but the securing means does not forni a closure between the ends of the cheek pieces with the result that as the blocks are pulled along the ground as they often are these projecting cheeks tend to cut into the ground and to pick up earth, stones, and sticks, thus @tending to block the sheave and throwing the stones and sticks in a manner dangerous, or disagreeable at least to the workmen in the neighborhood. The invention is further designed to strengthen the connection between the cheeks.

The invention is illustrated in the accompanying drawings as follows :w

Fig. l shows a central vertical section through a block.

Fig. 2 a side elevation, a part being broken away to better show construction.

Fig. 3 an elevation from the side of Fig. 2 of the end ot the pulley block.

l marks the sheave, 2 the hub oit the sheave, 3 the bearing bushing in the sheave, et a bearing pin, 5 a tie rod for securing the bearing pin in place, 6 locking pieces for securing the pin 4 in the cheek 7, and 8 a connecting shackle for the cheeks forming a holding means. These parts may be of ordinary construction.

The closure piece lO is made up of the spacing blocks ll which have perforations l2 through which the bolts 9 extend clamping the cheeks on the closure piece. The spacing blocks 1l are connected by an intervening plate which is strengthened by an inwardly extending web 13. The ends lil extend inwardly from the blocks ll, these ends extending into the groove of the sheave and being preferably shaped to conform to the sheave groove so as to make an efficient clo- 4the `ends makes a closure preventing the wedging in of stones, sticks, or other obstructions between the sheave and bolts se* curing the cheeks.

What I claim as new is l. In a pulley block, the combination of a sheave; cheek pieces between which the sheave is journaled; a holding member at one end or' the cheek pieces; and a closure member at the opposite end of' the cheek pieces formed with spaced blocks and a con-y necting plate, said connecting plate having an inwardly extending web.

2. In apulley block, the combination of a sheave; cheek pieces between which the sheave is journaled; a holding member at one end of the cheek pieces; and a closure member at the opposite end` of the cheek pieces having ends extending into the sheave groove.

3. In a pulley block, the combination of a sheave; cheek pieces between which the sheave is journaled; a holding memberl at one end or" the cheek pieces; and a closure member at the opposite end of the cheek pieces having ends extending into the sheave groove and conforming to the shape of the groove. y

4. In a pulleyblock, the combination of a sheave; cheek pieces between which the sheave is journaled; a holding member at one end of the cheek pieces; and a closure member at the opposite end of the cheek pieces formed wit-h spaced blocks and a connecting plate, the connecting plate having an inwardly extending web, the closure member having ends extending into the groove of the sheave and having a web in continuation 'of the web back of the connecting plate. f

In testimony whereof I have hereunto set my hand.

BROWN E. BARNES.

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