US772047A

US772047A - Hoisting and conveying mechanism.

Info

Publication number: US772047A
Application number: US17800303A
Authority: US
Inventors: George W Menefee
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-10-22
Filing date: 1903-10-22
Publication date: 1904-10-11
Anticipated expiration: 1921-10-11

Description

No. 772,047. y PATENTND 00T. 11, 1904.

G. W. MENNPEB. HOISTING AND CONVEYING MBGHANISM.

APPLICATION FILED 0(1T.22, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

- PATENTED OCT. 11, 1904.

G. W. MENEPEE.

HUISTING AND CONVEYING MECHANISM.

APPLIGATION FILED 0012212, 190s.

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N0 MODEL.

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l citizen of the United States, residing at Berke-l UNITED STATES Patented October 11, 1904.

GEORGE W. MENEFEE,KOF BERKELEY, CALIFORNIA.

HOISTING AND CONVEYING NIECHANISM.

SPECIFICATION forming part of Letters Patent No. 772,047, dated October 11, 1904.

Application tiled October 22, 1903. Serial No. 178,003. (No model.)

To @ZZ whom, it may concern:

Be it known that I, GEORGE W. MENEFEE, a

ley,in the county of Alamedaand State of California, have invented certain new and useful Improvements in Hoisting and Conveying Mechanism, of which the following is a speciiication.

My invention relates to improvementsrin mechanism for hoisting and conveying, and is especially adapted for loading or unloading freight onto or from ships or railroad-cars.

My invention therefore resides in the various novel devices and combination of parts for the above ends hereinafter fully specified, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of my improved mechanism. Fig. 2 is a plan view of the triple combined windlass used therein.

Fig. 3 is an enlarged side view of said triple combined windlass, showing also a modified form of block which may be used in connection with my improved apparatus. Fig. 4 is a longitudinal section of one of said windlasses. Fig. 5 is a cross-section thereof.

Referring to the drawings, 1 represents sheers for supporting the cableway and derrick-ropes secured by fixed guy-ropes 2, the

legs of said sheers standing upon the windlass-n frame 3 to hold it down. From the top of said sheers a tackle 4 is arranged to support a strainer-beam 5, whose farther end 3 may be supported direct, as shown, to the upper end of other sheers 6 or to any other convenient support. The nearer end of the strainer-beam is also secured in position by the adjustable guy-rope 7. By means of this construction the inclination of the cableway may be varied, as desired. Said cableway consists of two cables 8, secured at the farther end to a fixed block 9 and passing under rollers 10 in the carrier 11, thence over pulleys in a block 12, and thence to the windlass 13, which windlass is divided in the middle by a iiange` 14, its

grooves being right and left handed, respectively, on opposite sides of said flange. By operating said windlass 13 said cables may be shortened or lengthened, as desired, between the

blocks

12 and 9, so as to follow up with the carrier as it is raised by one of the derrickropes. The derrick ropes l5 and 16 serve both to raise and lower the carrier and its load and also to haul the carrier along the said cableway. One of these derrick-ropes, 15, passes around the windlass 17, thence over a pulley in the block 12 and is then attached to the carrier, this windlass and derrick-rope being operated to lift or to lower the carrier and its load or to draw the carrier toward the windlass,while the other derricli-rope, 16, is wound around a windlass 18, then passes over a pulley in the block 12, then around the block 9, and is then attached to the carrier, so that this windlass and rope are used to lift or lower the carrier at the outer end of the cableway and to haul the carrier away from the power end of the apparatus. These windlasses are operated as follows: A motor 20 or other power is applied to the driving-shaft 21, carrying a pinion 22, which operates a gear-wheel 23 on a power-shaft 24, having thereon two pinions 25 26. Of these the pinion 25 meshes with a gear-wheel 27, which operates the windlass 18, while the pinion 26 meshes with a gear-wheel 28, operating the windlass 17, said gear-wheel 28 again meshing with a gear-wheel 29, operating the windlass 13. However, the pinions 25 26 may be shifted along the shaft 24 and secured by set-screw 3l, so that pinion 26 engages the gear-wheel 27, and the corresponding windlass only is actuated. Each gearwheel is fastened on the shaft 33 of its windlass, the drum 34 itself being loose on said shaft and being operated from said gear-wheel by means of a friction-ring 35 in a friction-groove 36 in the head 37 of the drum. Said groove is moved up against said ring by means of a lever or handle-bar 38, carrying a weight 39. The lower end of said lever or handle-bar is formed into a plate 40, having crown ratchet-teeth 41, which engage similar ratchet-teeth 42 on a collar 43, secured to the frame of the machine. By reason of this construction when the handle-bar is moved to the rear or away from the apparatus the drum 34 is forced endwise, so that the groove engages the friction-ring, and the windlass is put into operative connection with the gear-wheel, thus winding up the cables. When the handle-bar of any windlass is moved forward, power is no longer applied to the windlass. To prevent windlass 13 reversing under these circumstances, aspecial construction is provided. The head of the drum next said handle-bar is formed with notches or teeth 45, which are engaged by spring-actuated dogs 46, pivotally secured upon the brake-wheel 47, so that only one of said dogs is in engagement at any time with a notch or tooth. When the brake is on, so that said brake-wheel is prevented from turning', the removal of the power from the windlass will not cause the windlass to reverse, for the dogs 46 will engage the notches 45 and arrest the windlass. It is desirable, however, to be able to throw the brake ofi' the brake-wheel, so as to allow the windlass to run backward under certain conditions, as when the carrier returns empty. The brake is normally applied by means of a brake-band 48 around the iianged rim of the brake-wheel, the ends of said brake-band being secured by a lever 49, said lever being normally held down by means of a weight 50. If, however, power is applied to lift the weight by means of a rope passing around an overhead pulley 5l, then the brake is no longer on, and the windlass can run back freely. F or the windlass 18 power applied to the foot-lever 52 is transmitted directly to the shaft 53 to tighten the brake-band, and for the windlass 17 the power applied to the crank-lever 54 is transmitted, by means of a bar 55 and short lever 56, to the corresponding brale-band shaft, so that the power ends of both of said levers may be close together and convenient for the operator. A

is a trip which strikes a hanging block 6l to dump the load.

In Fig. 8 I have illustrated an improved form of block 12, which may be advantageously employed under certain conditions for supporting the cableway. In this construction the edges of the outside plates are turned over and back upon themselves and then riveted to form bearings for eyebolts 57. To said eyebolts are secured the ends of the cables, these cables being then passed under pulleys 58 in a block 59, then over the pulleys in the block 11, and then under the carrierpulleys, as before. chain 62 is now attached to an eye on the end of the block 59 and is carried around the windlass 13, which will now be made single instead of duplicate, as before. The advan- A single drum rope ortage of this construction is that the cables can be made shorter and of even length, and they will wear longer and be more easily renewed.

I claim- 1. In a hoisting and conveying mechanism, the combination of a double cableway, a double-ended windlass for said cables, a carrier on the cables, derrick-ropes to haul the carrier in either direction, and a windlass for each derrick-rope, substantially as described.

2. In a hoisting and conveying mechanism, the combination of a double cableway, a carrier thereon, derrick-ropes to haul the carrier in either direction, a single windlass for the cableway, and separate windlasses for the derrick-ropes, substantially as described.

3. In a hoisting and conveying mechanism, the combination of a double cableway, a double-ended windlass therefor, a carrier on said cableway, derrick-ropes to haul the carrier in either direction, windlasses for said derrickropes, a source of power, and independent friction devices for bringing said three windlasses into operative connection with the source of power, substantially as described.

4. In a hoisting and conveying mechanism, the combination of a double cableway, a double-ended windlass therefor, a carrier on said cableway, derrick-ropes to haul the carrierin either direction, windlasses for said derrickropes, a source of power, and independent friction devices for bringing said three windlasses into operative connection with the source of power, and brake-levers for preventing reversal of the windlass when the power is disconnected, substantially as described.

5. In a hoisting and conveying mechanism, the combination of a double cableway, a doubleended windlass therefor, a carrier on said cableway, derricl-ropes to haul the carrier in either direction, windlasses for said derrickropes, a source of power, and independent friction devices for bringing said three windlasses into operative connection with the source of power, automatic means for preventing reversal of the cable-windlass, and means, operative at will, for preventing the reversal of the other windlasses when the power is disconnected, substantially as described.

6. In a hoisting and conveying mechanism, the combination of a double cableway, a double-ended windlass therefor, a carrier on said cableway, derrick-ropes to haul the carrier in either direction, windlasses for said derrickropes, independent friction device for starting said windlasses, and an automatic clutch for the windlass for the cables, substantially as described.

7. In a hoisting and conveying apparatus, the combination of two cables, a carrier thereon, derricl-ropes and means to haul the car- IOO IIO

IIS

rier in either direction by means thereof, the hand in the presence of two subscribing Witcables being fixed securely at one end, a block nesses. having sheaves therein over Which the cables pass, and a single Windlass for varying the 5 length of the oableway, substantially as de- Witnesses:

scribed. FRANCIS M. WRIGHT, In Witness whereof I have hereunto set my Bnssm GORFINKEL.

GEORGE W. MENEFEE.