US1063528A - Pulley-block. - Google Patents

Description

J. B. GILGHRIST.

PULLEY BLOCK.

APPLICATION FILED MAY 24, 1912.

1,063,528, Patented June 3, 1913.

Inventor.

Attorneys J'OHH EBENEZEB GILCHBIBT, 0F SOUTH BEND, WASHI IINGTOH.

PULLEY-IBLOCK.

Specification of Letters Patent.

Patented June 3, 1913.

Application lied Kay 24, 1812. Serial 10. $99,520,

To all whom it may concern:

Be it known that I, JOHN E. citizen of the United States, residing at South Bend, in the county of Pacific and State of Washington, have invented a new and useful Pulley-Block, of which the followingis a specification;

This invention relates to pulley blocks, and is particularly an improvement over the GILoHRIs'r, a

pulley block disclosed in my former Patent No. 977,613, issued December 6, 1910.

The present invention contemplates the provision of a rope or the like, upon the dieave, against accidental displacement, and to prevent the 5 apertured, and a headed locking pin 7 being cheek plates from cramping the sheave.

This invention also aims 'to provide a device of the character indicated which shall be simple, substantial, durable and inexpensive in construction, as well as convenientand efiicient in use, and which may be read ily assembled or dismantled.

To the foregoing and other ends, which will be apparent as the invention is better understood, this invention resides in the novel combination and construction of parts hereinafter set forth and particularly pointed out in the appended claims, it being understood that this device is susceptible of alterations or deviations in its details, such as changes in sizes, proportions, materials and the like, within the scope of the appends ed claims without departing from the spirit of the invention.

The preferred embodiment of the invention is illustrated in the accompanying drawing, wherein similar reference characters have been employed to denote corresponding parts, and wherein,

Figure 1 is a side elevation of the pulley block. Fig. 2-is a sectional view taken on the line 2-2 of Fig. 1. Fig. 3 is a plan view of the pulley block. Fig. 4 is a perspective view of the guard employed in carrying out the present invention.

Referring in detail to the drawing, the present device embodies the two cheek plates 5 the axle 16 connectingt-hem, and a sheave 15 journaled on the axle, as in the construction disclosed in the said patent, one of the cheek plates being provided with a chamber for containing a lubricant, and the axle being provided with a duct for conveying the lubricant to the bore of the sheave, as clearl shown and described in the said patent.

guard for retainingthe cable,

In carrying out the present invention, each eheekplatefi is provided at its u per edge witha pair of ears 6 arranged in pliines at right angles to the planes of the cheek plates. A shackle 10 has ears 11 atits ends, which ears are received by the respective pairs of cars 6, and a guard 12 is dlsposed snugly between the cheek plates and between the sheave. 15 and the shackle 10, the said guard being in the form of an elongated v block having the inner groove 14 facing the groove of the sheave and havin oppositely projecting cars 13 at its ends. %he ears'13 of the guard overlie the corresponding ears of the pairs ofears 6, all of the ears being 70 passed through each set of ears with the head 8 abutting against the ear 13. A cotter pin or other member 9 is engaged with each locking pin 7 to retain the locking pin in po- 7 5 sition, and when detached permits the removal of the lockingpin; The ears 13 of the guard 12 are offset outwardly so that the guard may stand between the upper endsof the cheek plates and the ears 13 may overso lie the corresponding ears 6.

The guard 12 in being snugly dis osed between the cheek plates prevents t e cheek plates from moving inwardly when the shackle and sheave are under tension, there- 85 by preventing the cheek plates from cramping the sheave. This guard 12 is also arranged adjacent the periphery of the sheave so as to properly retain the cable, rope or thelike, on the sheave, and preventing the rope, cable or the like, from jumpin or otherwise accidentally disengaging rom the sheave, and thereby preventing accidents or injuries which might occur if such were the case. By removing the cotter pins from the locking pins 7, the locking pins may be partially withdrawn from the ears 6 so as to liberate the shackle, or, if so desired, only one locking pin 7 may be partially withdrawn to liberate one end of the shackle 'so as to permit the shackle to swing 0 am It will therefore follow, that the shac 1e may be opened for the attachment or detachment of the holdin member for the pulley block without inter ering with the guard, and by removing the locking pins entirely, both the shackle and the guard may be removed. The advantages of this pulley blockare manifest, and need not be itemized a't length, and it will be seen that the present 110 pulley block is simple, substantial, durable claimed as new is L'A pulley block embodying two cheek plates, 0. sheave journaled between the cheek plates, a shackle, and a guard arrangedbetween the cheek plates and bet-ween the shackle and sheave and a locking member securin one end of the shackle and the guard to eac cheek plate so that the member may be artially withdrawn to free the. shackle wit out freeing the guard.

2. A pulley block embodying two cheek lates, an axle connecting them, a sheave Journaled on the axle, a locking member carried by each cheek plate, a shackle engaged at its ends by the saldlocking members, and

'a guard disposed between the cheek plates an between the sheave and shackle and engaged by the said locking members.

3. A pulley block embodying two cheek lates, an axle connecting them, a sheave ournaled on the axle, each cheek plate havmga pair of ears at one edge, a shackle having ears at its-ends received by the respective pairs of ears, a ard disposed snugly between the cheek p ates and between the sheave and shackle, and having oppositely projecting ears at its ends overlapplng the sum,

against the last mentioned ears, and members engageable with the free ends of the locking pins.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

JOHN EBENEZER GILCHRIST. Witnesses: C. A. STOPPELMAN, H. A. HILL.

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