US955940A - Hoisting apparatus. - Google Patents

Description

H. B. BOWCHER. HOISTING APPARATUS.

APPLIOATION FILED FEB. 2a, 1901.

955,940. Patented Apr.26, 1910.

L WITNEESEE wlwm'ma HENRY E. BOWCHER, OF DAWSON, YUKON TERRITORY, CANADA.

I'IOISTING APPARATUS.

Specification of Letters Patent.

Application filed February 28, 1907.

Patented Apr. 26, 1910.

Serial No. 359,748.

I '0 all whom it may concern:

Be it known that I, HENRY E. BOWGHER, a subject of the King of Great Britain, residing at Dawson city, in the Yukon Territory and Dominion of Canada, have in vented certain new and useful Improvements in Hoisting Apparatus, of which the following is a specification.

My invention relates to hoisting apparatus and is especially applicable for use in excavating mines, wells, and all work of that character.

The chief objects of my invention are to produce an efficient hoisting apparatus that will be simple in construction, and automatic in its working, so that only one person is needed to operate it; to provide a combined hoisting and dumping appliance requiring only one hand to manipulate it and that can be operated for both purposes mentioned from one point; to furnish means for work ing the device with equal facility from the surface of the ground or from the bottom of a shaft or well.

Another advantage of my device is that it can be readily and cheaply manufactured from materials commonly in use and with the ordinary tools found in blacksmith or other shops.

A still further advantage lies in the simplicity and light weight of the apparatus, which can be readily transported in mountainous regions and rough countries where such devices are in demand for sinking shafts for prospecting and general mine work.

I accomplish the above and other minor results by the use of a cable stretched between two posts or other supports upon which a frame or trolley provided with pulleys is adapted to travel a hook attached to the trolley for supporting the bracket when hoisted and the necessary blocks and tackle for operating the device.

In the accompanying drawing which forms a part of this specification :-Figure 1 is a View of my improved hoisting and dumping apparatus assembled to operate in the shaft of a mine; Fig. 2 is an enlarged View of the trolley and attachments, and

,Fig. 3 is an end view of the trolley; Fig. 4;

is a detail of the loop for supporting the bracket upon the hook.

Referring to the drawing the numerals 3, 3 indicate posts set in the ground to form supports for the main line cable 4 which is stretched between the posts 3, 3. The post 3 is located near the mouth of the shaft A and the other, 3, is set at the place where it is desired to dump the material. The line cable t is inclined somewhat downwardly from the post 3 to the shaft post 3 in order to bring into use the force of gravity when the bucket is returned from the dump to the shaft. A framework or trolley B preferably formed of a single piece circular in shape and bent upon itself at 5 to form the sides is provided with pulleys 6 which are adapted to engage the cable 4, and travel thereon thus supporting the trolley and attachments.

Below one of the pulleys 6 is pivoted a pulley 7, and near the opposite end of the trolley frame is pivotally mounted a curved lever 8 one end of which projects horizontally from the trolley and terminates in a shoulder 10 which engages with the end of a horizontal bar 11 projecting from the post 3, by means of a shoulder 12 when the trolley is in its lowest or initial position in the cable f. Vhen the arm 8 engages the bar 11 its movement toward the post 3 is limited by the stop 13 against which the end of said arm strikes. The opposite end of said arm or lever is bent downward and terminates in a hook 14. Above this hook is a stop 15. One end of a traction or hoisting rope 16 is passed over the pulley 7 to change'its direc tion and is then carried down to and around a sheave in a pulley block 17 and terminates in an eye which is secured in a ring 18 attached to the frame of the trolley B. The opposite end of this traction rope is carried through a pulley block 19 secured to the post 3 and is led back to a double pulley block 20 attached to the shaft post 3. Passing over one of the pulleys in said block it is carried down into the shaft A and wound around a Windlass 21.

To the pulley block 17 is attached a bail or loop 22 which projects vertically from the block and is adapted to engage the hook l-ft of the lever 8. To the same block 17 is a pendent arm 23 which engages the eye of a bail 24, of a bucket 25 supported by pivotal lugs on the bail.

A clamping rope 26 secured at one end to any convenient point near the operator is carried over one of the pulleys in the block 20 and then around a pulley 27 pivotally mounted in the trolley frame whence it passes to the lower edge 28 of the bucket and the rest vofthe apparatus arranged in the manner v shown; the bucket bein'gjat thefibottom; of the shaft; The operator having filled the-bucket; raisesit by pulling upon the; rope-l6 orb'y turning the Windlass 2f until theiloop22' strikes the-stop '15 oftht lever8i This will releasethe lever from engagement with the bar-lland the loop-22' Will catch tionupon the ropethe trolleyYWil-l -travel along the cable 4 until the point for dump ing'isreached. This can be determined 'by the length of the rope 26 when the'operator is at the bottom of the shaft and out of sight of the placer-If the rope 26 is made fast the dumping "Wil-l be automatically broughtabout by turning thGKWlHCl laSSWlDt/ll the said rope is brought 1 into action orithe bucket may -bedun1ped: at any point along its course by' pulling' upon" the rope attached tothe= bucket When the-bucket is empty the incli'nation 'ofthe cable will carry the trolley back to its startingpoint the lever 8 will strike "the stop 13 with: suflicient P force to: disengage-' the loop 22 from the hook -l4;,'-the shoulders'ldand 12 "Willengage and hold the trolley stationaryywhilathe bucket aW-ill descend-into the shaftby its own Weight it being understood that this reverse movement of the trolley and descent of the bu'cket are permitted by relaxing the pull upon the rope-16 and thatthemovementszof the trolley and bucket are constantly under the control of the operator by means of said rope 16. It is obvious that many changes may be made-intheudevices of my inventlon :as heree in disclosed Without departing from the spirit an'd scope thereof and I do not Wish, therefore, to be limited to the precise construction set forth'-.-

Htvingthus described my'invention What I claim as new, is

In a -hoisting, conveying anddumpingrap= cable'and' terminal posts to which said cable issecu-red," pulley" attached to one of said" posts and a hook ha ving an'integral"stop at tachedtothebther post; a carrier -having sheaves arranged to 'travelon said *cable andother sheaves to receive the operating rope; a bent lever pivotally mountedon -sard car rier and "having at one--end avhookadapted to engage the-*hook and stop on said p ostga and onits other end'a hook and stop, a bucket having-a bail', a pulley and-hook pivadapted to engage the 1100mm stop onsaid lever, and operating ropes connecting the carrier 'and traveling over the pulleys --on the carr1er,'- bucket and post -W hereby the '70 bucket w-ill be hoiste'd relative tothe carrier and-the carrier drawn between the terminal posts substantially in the manner "set forth: In. testimony- Whereof I afliXqny signature in. presence of two witnesses.

HENRY; E. l BOWCHER.

Witnesses V OHARLESlMAQDONALD',

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