US1230164A - Block and tackle. - Google Patents

Description

W. HOOD.

BLOCK AND TACKLE.

APPLICATION FILED SEPT. 16. I916.

Patented June 19. 1917.

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V w. HOOD. BLOCK AND TACKLE.

APPLICATION FILED SEPT. 16, 1916.

Patented J fine 19, 1917.

2 SHEETS-SHEET 2.

uHl HH Ame 2 M WILLIAM HOOD, OF HEMPSTZEAD, NEW YORK.

BLOCK AND TACKLE.

Application filed. September 16, 1916.

To all whom it may concern:

Be it known that I, \VILLIAM Hoop, a citizen of the United States, residing at 237 Fulton avenue, Hempstead, Long, Island, and State of New York, have invented certain useful Improvements. in Block and Tackle, of which the following is a specification, reference being had therein to the accompanying drawing.

The invention relates to a falland tackle and more particularly to. the class of cable or rope controlling devices of hoisting and lowering apparatuses.

The primary object of the invention is theprovision of a device of this-character wherein the cable or rope used: in a hoisting and lowering apparatus is operated up'onsoas to avoid. the twisting of the cable or rope or the fouling of the stretches thereof when: trained overthe guide-pulleysin the-blocks oi'tackle of said apparatuswhen inoperationfor raising and lowering purposes, thus enabling the perfect working of said apparatus and increasing the life of the cable or rope thereof.

Another object of the inventionristhe provision of a device'of' this character wherein the construction thereof is novel in form for the proper control of the cable or: rope so as to prevent the twisting of; the stretches of the cable or any portion thereof when used in the tackle for hoisting and. lowering of a load, for example the. raising andlowering of a boat to and from the deck of a'vessel or other place or the raising or lowering of any part from one pointto another, thereby eliminating. undue wear upon the cable 'orrope or excessive strain thereon.

A further ob ect of theinvention is the provision of a device of this. character which is simple in construction, automatic inaction, thoroughly reliable. and efficient: in its purpose and inexpensive in manufacture and i installation. v

Othenobjects will-be 1n part obvious and in part hereinafter pointed out.

The invention accordingly consists in the: features of OOIlStIHCtlOIlfiIld arrangementof elements which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will beindicated in the following claims.

In the accompanying drawings:

Figure 1 is an elevation of a tackle with the hoisting cable showing the device con- Specification of Letters Patent.

Patented June 19, 1917.

Serial No. 120,489.

structed in accordance with the invention applied thereto.

Fig. 2 isa Vertical longitudinal sectional view through the device.

Fig. 3 is atop plan View of the device.

Fig. 4 is an elevation of a modified form of the device.

Fig. 5 is a vertical longitudinal sectional view therethrough.

Fig. 6 is a sectional view on the line 66 of Fig. 5.

Similar reference characters indicate corresponding parts throughout the several views of the drawings.

Referring to the drawings in detail, particularly Figs-.- 1 to 3 thereof, A designates a davit which is'of any well-known construc tion for' supporting the block B of a tackle which: block carries the usual hook 10" for the hanging of the same upon the dav-it and within this block area plurality of pulleys 11. which are journaled therein in any suitable manner and have trained thereover the hoisting cable 12- which suspends the controlling: device hereinafter fully described.

The controlling device comprises a block 13 which has journaled therein thepulleys 14 and15 respectively over which is trained the cablelQ while mount'ed'on'the't'op of the block 13 is a'rctatable member 16 inthis in stance being-in the form of atooth gear although it maybe in any other desirable form and carries centrally thereof an eye 17 in which is fastened oneend of the cable 12 whichat the other endis adapted to be connected to a Windlass or other winding device either mounted upona stationary support or upon the article to be raised or lowered. I

The pulley 14: in the block 13' is fixed to a driven shaft'18 which is adapted for connection with the rotatableelement 16 'so that motionfrom thepulley ll can be imparted thereto when the cable 12"is pulled upon in the raising'and lowering operation sothat the cable connected with the eye 17 will be turned to avoid the twisting of the cable or the fouling of the suspension stretches therements 16 there is fitted upon the shaft 18 a 7 gear 19 which meshes with a pinion 20 fixed to a countershaft 21 supported in a bracket 22 fastened to one end of the block 13, the shaft 21 being fitted with a gear 23 meshing with an intermediate gear 24: journaled upon the top of the block 13 and meshing with the gear 16 so that rotary motion from the pulley 141 will be transmitted to the gear 16 on moving the cable 12 in the hoisting or lowering operation for the purpose hereinbefore described. 7

To permit the throwing of the pinion 20 out of or into mesh with the gear 19 there is provided a suitable clutch 25 on the shaft 21, which clutch is manually operated in any manner to lock the pinion 20 on the shaft 21 or to permit it to run free thereon so that an operator can render the rotary element 16 active or inactive in the use of the controlling device.

The block 13 at its bottom has mounted thereon a hook 26 for the hanging of a part to be raised and lowered by the tackle and cable 12 trained over the pulleys 11 in the block B and the pulleys 1.4: and 15 in the block 13 of the device.

In Figs. 4, 5 and 6 there is shown a slight modification of the invention wherein the controlling device has mounted in the block 27 thereof the stationarily supported and movable rotatable pulleys 28 and 29 the.

latter being mounted upon a journal 30 having fixed thereto a transmission gear 31 and this journal 30 is held in the slide yoke 82 movably fitted within the block 27 with its closed end projected exteriorly thereof and has threaded therein a fixed screw 33 which works against the said blocks 27 so as to move the slide yoke 32 for changing the position of the gear 31 to move the same into mesh with and out of mesh from the rotary member 34 which is supported upon the top of the block 27 and carries the eye 35 for the connection of one end of the cable thereto, it being understood of course that the cable is trained over the pulleys 28 and 29 and when the gear 30 is out of mesh with the teeth of the rotary member 3 1 which is in the form of a gear the said member will be inactive upon the rope but on moving the. gear 31 in mesh with the member 34- it will. become active upon the rope to avoid twisting thereof or the fouling of the stretches of the same when suspended from the tackle and in operation for hoisting and lowering purposes.

It is of course to be understood that the arrangement of the gearing and the particular form thereof used in the controlling Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, 7

device can be varied and this is contemplated within the scope of the invention as expressed in the claims hereunto appended without departing from the spirit of said invention or sacrificing any of its advantages.

From the foregoing it is thought that the construction and manner of use of the block and tackle will be clearly understood and therefore a more extended explanation has been omitted. I

VVha't is claimed is:

1. The combination with a tackle and hoisting cable Working therein, of a controlling device comprising a block, pulleys arranged within the block over which the cable is trained, a rotary element supported upon the block and having a connection withone end of the cable and means connecting one of the pulleys in the block with the rotary element for imparting movement to the latter when the cable is active.

2. The combination with atackle and hoisting cable working therein, of a controlling device comprising a block, pulleys arranged within the block over which the cable is trained, a rotarv element supported upon the block and having a connection with one end of the cable and'means connecting one of the pulleys in the block with the rotary element for imparting movement to the latter when the cable is active, and means for throwing the connecting means between the pulley and rotatable element into and out of action.

3. In a tackle having a hoisting cable, rotatable means carried upon the tackle and having connection with one end of the cable for rotating said end of the cable when active, means on the tackle for controlling the first named means to render the same inoperative upon the cable and guides in they tackle for the cable. 7

4. In a tackle having a hoisting cable working therein, of a controlling device comprising rotatable means having connection with the cable for rotating the free end thereof, guides for the said cable and connections between one of the guides and the rotatable means to operate the same when the cable is active to rotate said means.

ture.

WILLIAM HOOD.

Washington, D. G.

In testimony whereof I aifix my signa

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