US729292A - Hoisting and conveying apparatus. - Google Patents

Description

PATBNTBDMAY 26, 1903.

APPLIOATION FILED JAN. .21, 1902.

2 SHEETS-SHEET 1.

. No'. 729,292. A PATENTBD MAY 26,1903.

J. H'. DIGKINSON- j HOISTING AND CONVEYING APPARATUS.

APPLICATION FILED JAN. 21,11,902.

' 2 SHEETS SHEET 2 A Q AN place.

I PATENT ZPatented. May 26, 1903.

OFFICE.

JOSEPH H. DICKINSON, OF ATLANTA, GEORGIA, ASSIGNOR TO THE LIDGER- WOOD MANUFACTURING COMPANY, A CORPORATION OF NEW YORK.

HOISTING AND CONVEYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 729,292, dated May 26,1903; 1 Application filed l'anuary21,1902. serainogsosn. mamas.)

cableways, ropeways, and similar conveyers',f and comprises the novel features which will be hereinafter described, and particularly pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which the same reference characters represent corresponding figures.

Figure 1 shows diagrammaticallyinelevation a cableway having my improvements em Fig. 2 is a side elevation ofj the carriage, showing the various ropes in: Fig. 3 is an edge elevation of the car-f riage. Fig. 4 is a side elevation of a carriage, showing a slightly modified construction? Fig. 5 is an edge elevation of the carriage: shown in Fig. 4. Figs. 6 and 7 are sectional bodied therein.

details showing, respectively, the construction of grip-wheels and chain-wheels which may be used on the carriage.

In operating cableways or ropeways much difficulty is often found in getting the fallblock to descend from the-carriage when desired. This is due to the fact that-the stretch} of the hoisting-rope extending between the; carriage and the first support sags down and causes a strain upon the rope which the weight of the fall-block is unable to overcome. It is this which has caused the necessity for fallrope carriers. In my present invention I provide means, mounted largely upon the carriage, by which; the hoisting or'fall rope may be positively paid out without overweighting the fall-block or employing an excessive nu 1nber of fall-rope carriers.

In the cableway as shown'in Fig. 1 three cables or ropes are used-the trackway or supporting-cable A, which is supported at a aat opposite ends of the span, the hauling or traction rope B, and the hoisting or fall rope D. The hauling-rope B is endless, passing from the carriage over guide-pulley 3 on the headparts in thedifterent supportto and about the drumll, over guidepulleyt on. the head-support, between guidepulleys b b on the carriage, overguide-pulleys 2 and l'on the tail-support, and back to the carriage. The hoisting-rope is double, the ends thereof "winding, respectively, upon drums 9 and 10 and extending over' guidepulleys 5 and 8 {on the ahead-support, One run of thelloisting-ropethen extends to and about a Wheehas G, on the carriage O','then down and about the Wheel, of the fall-block F and upward about a wheel, as G, upon the carriage. Thehoisting-rope may then extend either about a guide pulley or pulleys, as 6 and 7, upon the tail-support and back to the head-support, as shown in Figs. 1 and 2, or may extend directly from the carriage back to the head-support, as shown in Fig. 4. :In either case the wheels G and G upon the carriage overwhich the hoisting-rope passes should beso constructed that the, rope will grip them with sufficient force'to insure that they will always turn with the hoisting-rope and-prevent-thepossibility of the rope slipping upon the wheels. In case the ordinary groove in thewheel is not sufficient to prevent slipping a grip-wheel, such as shown in Fig. 6,-or any other desired construction may be employed, or the wheel may be provided with pockets adapted to receive either the links of a-chain or buttons upon a rope and a chainbe -inserted=in-the rope or buttons atjtachedtheretoto 'cooperatewith the wheels.

Thegrip-wheel 9 as shown in Fig. 6, has a hollow andz'inwardly-curved rim g, within which are placedangular gripping levers or blocks h, which are normally held' outward by springs I, but are forced inward by the pressure of the rope, and thus caused tojgrip the rope. The wheel g ,,a's shown inFig. 7, has its periphery provided with ,pockets 9 adapted to receive either-Ethe links ofa chain or buttons on therope. v

The two wheels G andG are. made unequal 5 in size and are respectivelysecured to gear:v

wheels E and E, which bear to each other f,

diflerent ratio than that between the wheels G and G. In the drawings the gear-wheels are shown as 01": the same size. It is obvious that, if desired, the two rope-wheels G and G might be made of the same size and the gear-wheels E and E unequal in size, the requirement being that the ratios between the two pairs of wheels be unequal.

In Figs-1 and 2 I have shown the twogears E and E as connected by an intermediate wheel E while in Figs. 4 and 5 they are directly connected. In Figs. 1 and 2 one run of the hoisting-rope extends from the carriage in opposite directions to the head and tail support and the other run D extends between the head and tail support and is shown as supported by a wheel G upon the same shaft as the intermediate gear E.

In Figs. 4 and 5 both runs of the hoistingrope extend from the carriage directly to the head-support. In both forms the ends of the hoisting-rope wind upon separate drums, which should be capable of turning at speeds dilfering in the same ratio as the peripheral speeds of the two wheels G and G. They should also be capable of turning at the same speed, which should correspond in some cases with the speed given the hauling-rope.

In operating my device the carriage is caused to travel along the trackway by the operation of the endless hauling-rope in the usual manner. If it is desired that the fallblock and the load carried thereby be kept at a uniform distance from the carriage, the drums which are connected with the ends of the hoisting-rope are rotated oppositely at a peripheral speed equal to that of the drum which operates the hauling-rope. The fallblock will therefore not change its position relatively to the carriage.

If it is desired to raise or lower the fallblock, the two drums controlling the hoisting-rope are turned oppositely at peripheral speeds dilfering in the same ratio as the two wheels G and G. When turned in one direction, this will cause the hoisting-rope to run off of that one of the two supportingwheels having the greater peripheral speed and upon the one having the lesser peripheral speed, and the fall-block will be lowered at a speed equal to one-halfof the difference between the peripheral speeds of the two supporting-wheels. It turned in the opposite direction, the hoisting'rope will be run ofi of that one of the two supporting-wheels having the lesser peripheral speed and upon the one having the greater peripheral speed and the fall-block will be raised at a speed equal to half the difference between the peripheral speeds of the two wheels. The operator thus has at his command means by which the descent of the fall-block may be positively secured independent of its weight or the distance of the carriage from the nearest fallrope support.

Having thus described myinvention, what I claim, and desire to secure by Letters Patcut, is

1. In a hoisting and conveying device the combination with a trackway, a carriage thereon,and means for moving the carriage along the trackway, of ahoisting-rope, two

wheels upon the carriage receiving the hoisting-rope and connected to have differential peripheral speeds, means for taking up and paying out the two ends of the hoisting-rope independently of each other and at variable speeds, and a fall-block suspended in a loop of the hoisting-rope between said differential wheels.

2. In a hoisting and conveying device the combination with a trackway, a carriage thereon, and means for moving the carriage along the trackway, of a hoisting-rope, two wheels upon the carriage receiving the hoisting-rope and connected to have difierential peripheral speeds, means for positively engaging the hoisting-rope and said wheels to prevent slipping, means for taking up and paying out the two ends of the hoisting-rope independently of each other and at variable speeds, and a fall-block suspended in a loop of the hoisting-rope between said differential wheels.

3. In a hoisting and conveying device the combination with a trackway, a carriage mounted to travel on said trackway, a hauling-rope connected with said carriage and a drum for actuatingsaid hauling-rope, of two wheels upon the carriage connected to have differential peripheral speed, a hoistingrope extending over said wheels and having a loop depending between them, a fall-block suspended in said loop, and means for taking up and paying out both ends of the hoisting-rope independently of each other and at variable speeds.

4. In a hoisting and conveying device the combination with a trackway, a carriage mounted to travel on said trackway, a haul-.

ing-rope connected with said carriage and a drum for actuating said hauling-rope, of two wheels upon the carriage connected to have difierential peripheral speed, positive ropegripping means carried by said wheels,a hoisting-rope extending over said wheels and having a loop depending between them, a fallblock suspended in said loop, and means for taking up and paying out both ends of the hoisting-rope independently of each other and at variable speeds.

-5. In a hoisting and conveying device the combination with a trackway, a carriage mounted to travel thereon, and means for ac-' tuating the carriage, of a, hoisting-rope extending to the carriage and back again, a fallblock suspended by the hoisting-rope beneath the carriage, means for lowering the fallblock by pulling upon one end of the hoisting-rope and means for raising the fall-block by pulling upon the other end of the hoistingrope.

6. In a hoisting device the combination with a looped or double-run hoisting-rope and means for actuating the two runs at diiIerent speeds, of geared diflferential pulleys receiving the hoisting-rope to form a loop between them, and a fall-block suspended in said loop.

7. A carriage for use on cableways and similar devices havingtwo wheels adapted to receive the hoisting-rope, and gearing con-' necting said Wheels to produce differential peripheral speeds therein.

8. In a hoisting and conveying apparatus, the combination with a carriage and means 7 for moving the carriage along a definite route 1 the combination a rope-drum at one end of the trackway anda rope through which said Wheels are driven from said drum.

10. In a'hoisting and conveying apparatus, with a trackway, a carriage thereon and means for moving the carriage along the trackway of a hoisting-rope extending along the trackway and forming a loop at the fall, two wheels upon the carriage re ceiving the hoisting-rope and connected to have differential peripheral speeds, means of positive engagement between the hoistingrope and said wheels to prevent slipping and as U a fall-block suspended in a loop of the hoisting-rope between said difierential wheels.

11. A carriage for use on cableways and similar devices having two connected wheels adapted to clutch the hoisting-rope and having difierent peripheral speeds.

12. A carriage for use on cableways and similar devices having two wheels adapted to clutch the hoisting-rope and gearing connecting said wheels to produce differential peripheral speeds thereon.

13. The combination with a carriage adapt ed for use on cableways and similar devices, of two connected wheels of diiferent peripheral speeds, a hoisting-rope fastened successively over said wheels and forming a loop between them adapted to receive the fallblock; said wheels being constructed to form a peripheral clutching engagement with said hoisting-rope.

14. In a hoisting apparatus, in combination, a hoisting-rope, a drum by which it is actuated, a lowering-Wheel and a hoisting- Wheel over both of which said hoisting-rope passes at the top of the fall and means whereby the hoisting motion of one of said wheels communicates the lowering motion to the other thereof.

In testimony whereof I have hereunto affixed my name in the presence of two witnesses.

JOSEPH H. DICKINSON.

Witnesses:

M. S. AMSTUTZ, A. M. DICKINSON.

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