US722613A - Hoisting apparatus. - Google Patents

Description

10.722,613. PATENTBD MAR.10,1903.

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HOISTING APPARATUS.

APPLICATION FILED HAY 3,-1902.

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PATBNTED MAR. 1o, 1903.

APPLIATION FILED MAY 3|`1902l 3 SHEETS-SHEET 3,

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".NITED STATES;

PATENT OFFICE.

ALMON E. NORRIS, OF CAMBRIDGE, MASSACHUSETTS.

HOISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 722,613, dated March 10, 1903.

Application iiled May 3, 1902. Serial No. 105,729. (No model.)

To all whom t may concern.:

Be it known that I, ALMON E. NoRRIs, a citizen of the United States, residing at Cambridge, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Hoisting Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on the drawingsl representing like parts.

This invention relates to hoisting apparatus, and especially to what are familiarly known as coal-towers. These towers as usually constructed are mounted upon a suitable elevated track and carry a boom, on which travels a carrier or trolley, a bucket or other hoisting device being suspended from the carrier. Usually the tower carries two engines, which are located in different places in the housing carried by the tower and one of which operates the bucket and the other of which operates to move the carrier back and forth upon the track.

It is the object of this invention to provide a novel form of engine construction for operating the carrier and the bucket independently and which is also constructed to move the tower back and forth upon its track and to raise and lower the boom, as desired.

My engine mechanism comprises a horizontally-arranged bucket-hoisting engine, upon the frame of which is a carrier or trolley-operating engine, and preferably one of said engines will be adapted to operate the drivinggearing for the tower and also will have connected to its crank-shaft a winch-head, by means of which the boom may be raised and lowered. By this arrangement of engine I eeonomize room in the tower and, what is more important, am enabled to place all the levers of the engine mechanism within easy reach of a single operator.

In the drawings, Figure 1 shows a coalhandling tower with my improvements applied thereto. Fig. 2 is an enlarged viewA of a portion of the tower and my improved engine therein, the lower right-hand corner of said tower being broken away and the supporting-wheel being shown. Fig. 3 is a top plan view of my engine, and Fig. 4 is au end view thereof.

Referring to Fig. 1, 3 designates a tower of The trolley 6 is moved back and forth upon Y the boom 5 by means of the usual trolleyrope 10. p

The parts thus far described are such as are found in all coal-handling towers, and their functions are familiar to those skilled in the art. I

Heretofore it has been customary to provide two independent engines placed in different parts of the housing 11 for operating the trolley and the bucket, respectively, the drum of one of the engines controlling the trolley-rope 10 and the drums of the other engine havingthe opening and closing ropes 8 and 9 wound thereon. In place of these two separately-situated engines I substitute a single structure having a trolley-operatin g engine and a hoisting-engine.

Referring to Figs. 2, 3, and 4, 13 designates longitudinal girders or beams connected by cross girders 14, said gil-ders forming the frame supporting the bucket-operating or hoisting engine, which operates the two drums 15 and 16 for the opening and closing and holding ropes of the bucket, respectively. These drums may be of any usual or suitable construction, but preferably will be such as are illustrated in my application, Serial No. 34,532, filed October 271900.

The hoisting-engine comprises the two cylinders 17, which are supported upon the two girders 13 in any suitable way, preferably by means of brackets 18, each cylinder havinga piston, the piston-rod of which is connected through a cross-head 19 with a pitman 20, connected to one of the crank-disks 21, fast to the shaft of the hoisting-drum. The crossheads 19 move over suitable tracks or guides 22, which are supported from the girder 13 by means of brackets 23.

The trolley-operating engine, which constitutes the other part of my improved struc- IOO ture, is carried by the frame of the hoistingengine, and therefore its operating-levers are Within easy reach of the engineer who operates the hoisting-engine. The frame of the trolley-operating engine comprises longitu- Aconnected to the usual crank-disk 21' on the shaft of the trolley-drum 30, the said shaft being supported in suitable bearings upon the girders 13. K

The hoisting-engine and the trolley-operating engine are capable of operation independently; but by placing one on top of the other, as illustrated, I provide a form of engine which has many advantages when employed in combination with a coal-handling tower.

The crank-pin of the crank-disk 21 is secured or connected to a disk on one end of an extension-shaft 31, which carries at its other end a winch-head 33. Said shaft 31 is journaled in bearings 32, which are supported on the frame of the hoisting-engine and which .are independent from the bearings for the trolley-drum 30.

When it is desired to raise or lower the boom 5, the hoisting-rope 34 for the boom, which passes over a suitable pulley in the top of the tower, may be wound upon the winchhead and the boom thus swung into the desired position. This Winch-head may also be employed for moving the tower along the track when used in connection with a tractionrope extending along the track and connected to fixed supports at its ends, for by winding an intermediate portion of the rope about the Winch-head the operation of the trolleyengine shaft Will give the tower its traveling movement. I prefer, however, to shift the position of the tower by means of suitable gearing, such as is shown in Figs. 1 and 2, which gearing is operated by the trolley.

In Fig. 2 each wheel 35 is geared by some suitable system of Worm-gearing to the shaftsection 36, said sections having at their adjacent ends the bevel-gears 37, which mesh with a bevel-gear 38 upon the driving-shaft 39, which shaft is supported in suitable bearings in the tower. The upper end of the shaft 39 has the bevel-gear 40 thereon, which meshes with two bevelgears 41 and 42, looosely mounted upon the short shaft 43, which forms, in eect, an extension of the trolley-drum shaft and which has at its end a crank-disk, to which the crank-pin on the crank-disk 21 of the trolley-drum shaft is secured. A clutch member 44 is splined to the shaft and may be brought into engagement either with the gear-Wheel 41 or 42, according to the direction of rotation which it is desired to give to the driving-shaft. The shaft extension 43 is suitably supported in bearings 48, which are independent from the bearings for the'drum 30 and are carried by the frame of the hoisting-engine.

The reversing-gearing 41 42 admits of propelling the tower iu either direction without the necessity of building the trolley-engine as a reversing-engine.

In order to permit the drum 30 to be placed on or removed from the crank-shaft, it willbe necessary of course to make the crank-disks 2l removable, as usual in this class of devices. 'Ihe shafts 31 and 43, while forming, in effect,extensions of the trolley-drum crankshaft, cannot of course be integral with said latter shaft, for otherwise it will be impossible to assemble the parts. In practice the said short shafts 3l and 43 are separate from the trolley-drum shaft and are mounted in separate bearings 32 and 48, respectively, as above described, and the crank-pins on the crank-disks 21 will be set intosuitable notches or grooves in the cranks at the ends of the shafts 31 and 43, respectively.

50 designates the usual steam-generator.

' I have found from practice that a duplex engine constructed as above described and having provision for not only operating the trolley and the hoisting-bucket, but also for swinging the boom and propelling the tower on its track, has many advantages over the ordinary construction in which two entirely separate engines are situated at different parts of the tower.

It will be obvious to those skilled in the art that the details of construction may be varied in many ways without departing from the spirit ofmy invention as expressed in the appended claims.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a hoisting apparatus,a hoisting-engine frame, a hoisting-engine and hoisting-drum supported thereby, a trolley -engine frame mounted on the hoisting-engine frame, and a trolley engine and trolley-operating drum supported on the hoisting-engine frame.

2. In a hoisting apparatus, a carrier movable on a track, a hoisting-bucket suspended from the carrier, a hoisting-engine to operate the bucket, said engine comprising two cylinders, the pistons of which are operatively connected to opposite ends of a hoisting-drum shaft, and a carrier-operating engine supported on the frame of the hoisting-engine and situated between the cylinders thereof.

3. In a hoisting apparatus, a carrier movable on a track, a hoisting-bucket suspended from the carrier, a hoisting-drum for operating the bucket, a hoisting-engine for operating said drum, and a second engine supported by the frame of the hoisting-engine and operating to move the carrier on its track.

4. In a hoisting apparatus, a carrier movable on a track, a hoisting-bucket suspended from the carrier, a means for operating said IOS IKO

masia S carrier and bucket indepcndently,said meansl comprising a hoisting-en gine and a trolley-eugine supported by the frame of the hoistingengine.

5. In a hoisting apparatus, a tower movable on a track and supporting a boom, a carrier movable on the boom, a hoisting-bucket suspended from the carrier,a horizontal hoisting-engine, a trolley-engine supported on the frame of the hoisting-engine, and means operated byl the trolley-engine to propel the tower along its track.

6. In an apparatus of the class described, a tower movable on a track, a trolley or carrier supported by the tower, a hoisting-bucket suspended from the trolley, a hoisting-engine having a horizontal frame, and a horizontal trolley-engine supported on the frame of the hoisting engine, a shaft connected to and forming in edect an extension of the trolleyengine crank-shaft, and a winch-head carried by said first-named shaft.

7. In a hoisting apparatus, a hoisting-engine frame comprising longitudinal girders and connecting cross-girders, a hoisting-drum supported thereby, a cylinder supported by each girder, the pistons of said cylinders having operative connections with the shaft of the hoisting-drum, combined with a trolleyengi-ne frame su pported on said cross-girders, and a trolley-engine supported by said frame.

8. In a hoisting apparatus, a hoisting-engine frame,a hoisting-engine supported thereby, a trolley-operating engine carried by the frame of the hoisting-engine, and a shaft mounted in bearings supported. on the hoisting-engine frame and independent from the trolley-engine frame, said shaft constituting Vnaled in bearings supported on the hoistingengine frame independently of the trolleyengine frame and constituting in effect extensions of the trolley-engine crank-shaft, a winch-head on one of said crank-shafts, and means operated by the other to propel the tower.

10. In a hoisting apparatus, a hoisting-engine, a trolley-engine supported by the frame `of the hoisting-engine, a bearing carried by the hoisting-engine frame, a shaft in said bearing, said shaft being in alinement with the crank-shaft of the trolley-engine and connected thereto, and a winch-head carried by said first-named shaft.

ll. In a hoisting apparatus, a trolley-engine comprising two cylinders, the pistons of which are connected to cranks at opposite Vends of the crank-shaft, a shaft in alinement with the crank-shaft and connected thereto, and a winch-head upon said shaft.

In testimony whereof I have signed my name to this specication in the presence of two subscribing witnesses.

ALMON E. N ORRIS.

Witnesses:

LoUIs C. SMITH, GEO. W. GREGORY.

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