US768016A - Mechanism for hoisting and transferring loads. - Google Patents

Description

PATENTED AUG. 16, 1904. c. A. MORRIS. v MECHANISM FOR HOISTING AND TRANSFERRING LOADS.

APPLICATION FILED SEPT. 5, 1903.

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No. 768,016." v PATENTED AUG. 16, 190 0. A. MORRIS.

MECHANISM FOR .HOISTING AND TRANSFERRING LOADS.

APPLICATION FILED SEPTA 1903.

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' W I TN 8358: QYZJWTS INVENT0I? I v YB) a I ATTORNEY UNITED STATES Patented August 16, 1904.

PATENT OFFICE.

CHARLES A. MORRIS, OF GLENBIDGE, NE'VV JERSEY.

IV|ECHANISM FOR HOI STING AND TRANSFERRING LOADS. I

SPECIFICATION forming part of Letters Patent No. 768,016, dated August 16, 1904. Application filed September 5, 1903. SerialNo. 172,055. (No model.)

To all whom, it may concern:

ridge, in the county of Essex and State of NewJersey.have invented certain new and useful Improvements in Mechanlsms for Hoisting and TransferringLoads, of which the fol I lowing is a specificat1on.

This invention relates to the class of devices employed for elevating a load,'transferr1ng it to another p0int,.and discharging it, employ ing for this purpose atrackwa'y, a trolley on the track, andhoisting means, such as a rope and drum; and the object of the invention 1S3 to provide a means whereby the movement of? the trolley along its track with the load to be transferred lifts a weight, and thus stores up power to return the trolley to the receiving point after the" load is discharged.

In the accompanying drawings. which illustrate several embodiments of the invention, Figure 1 is a somewhat diagrammatic general view illustrating the invention as applied to a trolley running on a fixed track-beam and provided with a rolling counterweight for the trolley. Fig. 2 is a detail view of the trolley on a larger scale. Fig. 3 is adetail plan view of the drums, the brake device, and the rolling weight on a larger scale. Fig. 4 is a general view illustrating a form of the invention where a radially-swinging weight is employed to return the trolley. This view is also some what diagrammatic.

' Referring primarily to Fig. 1, A designates a structure having in it below a track Tfor a receiving-car C and a projecting fixed trackbeam 1, supported by a guy 2. On the trackbeam runs a,trolley 3, (seen in detail in Fig. 2,) which is coupled to the end of a rope L, passing about a guide-sheave 5 at the outer end of the beam and back to a drum 6 on the structure A, about which drum it is wound.

On a reduced part 6 of the drum 6 is wound,

in the opposite direction to the rope 4:, a rope 4:, to which is secured a rolling weight 7 on a downwardly-curved track 8 in the structure A. In the structure A is a hoisting-drum P. from which a rope 9 extends up over a guidesheave l0, thence down and over a sheave 11 in the trolley, and thence down to the point where the load L is secured thereto. In the drawings the load is represented as a dredg-' ing-bucket, adapted to be operated and controlled by a cord 12 in a \vell-known way.

' There is a brake on the drums 6 6 to be controlled by the hoisting engineer, and this brake (seen in plan in Fig. 3) may comprise a brake-wheel 13, connected with the drums, a strap 14; about said wheel, and a lever 15 coupled to'the said strap and provided with an operating-rope 16. This form of brake is well known and will require no special description. Indeed,any good form of brake will serve the purpose of putting a check on the too-rapid rotation of the drums. The rolling weight may roll between guides 17, Fig.

3, along the track.

The operation is substantially as follows: Suppose the bucket has been lowered and has received its load and that the rolling weight 7 is at the lower end of its track. The engineer sets the. brake on the wheel 13 and sets in motion the hoisting-drum P. The bucket rises with its load L to the proper height and the engineer slackens the brake, but keeps the hoisting-drum going. The effect is to run the trolley 3 and load L into the dumping position seen in dotted lines,the rope I unwinding from the drum 6 and the rope d winding up on the drum 6*, thus drawing the weight 7 up over the convex inclined track 8. The'engineer now stops the hoisting-drum, sets the brake, and dumps the load from the bucket. He now slackens the hoisting-rope, and the brake and the weight 7 descends. drawing the trolley 3 ley carrying the empty bucket with it.

' The object in making the track 8 convex is to equalize the effect of the weight 7 on the trolley with the effect of the hoisting-rope 9 thereon. It will be noted that when the trolley is at the outer end of the track-beam the power applied through the rope 9 to move the trolley inward is most effective, and this effectiveness is gradually reduced as the trolley moves inward, and it will also 'be noted that the resistance olfered by the weight 7 to the movement of the trolley inward on the 8 5 out again to the end of the track-beam,the troltrack-beam is also most effective, owing to the shape of the track 8, when the trolley is at the outer end of the said beam.

in the construction seen in Fig. 4c a wire rope stretched between two structures A A serves as a track 1 for a trolley 3. From the hoisting-drum P a hoisting-rope 9 extends over a sheave on the structure, thence to the trolley, and thence over the sheave 11 on the trolley down through a tackle tto the load L. The tackle is not essential to this invention. The trolley is coupled to a rope 4:, which winds on a drum 6 on the structure A while a rope 4 winds on a lesser drum 6 and is coupled to a weight 7 on an arm 8, pivotally connected to the structure A at y. Connected with the drums 6 and 6 is a brakewheel 13, embraced by a strap l4, operated by a lever and rope 16. The drums and brake device are the same as those seen in Figs. 1 and 3. The operation is the same as that with the form of the mechanism already described except that the weight 7 does not roll on a track, but moves in a curved path about the point y, the arm 8 swinging radially. Obviously the track l might be a rigid beam instead of a rope.

Having thus described my invention, I claim 1. Means for the purpose specified, comprising a trolley-track, a trolley movable therealong, a hoisting means including a rope which plays over a sheave on the trolley and thereby moves the trolley and load along the track to the discharging-point, a weight independent of the trolley-track, two connected drums rotatively mounted, a rope connecting one ol said drums with the trolley, a rope connecting the other of said drums with said weight, and a brake which controls the rotation 01 said drums.

2. Means for the purpose specified, comprising a trolley-track,a trolley movable therealong, a hoisting means includinga rope which plays over a sheave on the trolley and thereby moves the trolley and load along the track to the discharging-point, a downwardlycurved track 8, a weight 7 which moves up and down over said track, drums (5 and (3", a rope connecting the drum 6 with the trolley, a rope which connects the drum (5 with the weight, and a brake which controls the rotation of said drums.

In witness whereof I have hereunto signed my name this 6th day of August, 1903, in the presence of two subscribing witnesses.

CHARLES A. M ()hlt l b.

Witnesses:

BENJAMIN H. HOLT, WVILLIAM J. FIRTH.

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