US841198A - Hoisting-machine. - Google Patents

Description

PATENTED JAN. 15, l1907.-

G. L. 111111130. HOISTING MACHINE.

APPLICATION FILED MAY 24, 1906..

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I vPATIN'ED JAN. 15, 190'7.v

G. L. TREDO.

HOISTING MACHINE.

APPLICATION FILED MAY 24, 1906.

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UNITED vSTATES PArnNT OFFICE..

GEORGE L. TREDO, OF BUFFALO, NEW YORK, ASSIG-NOR TO THE CON- TRACTORS PLANT MANUFACTURING COMPANY, OF BUFFALO, NEW

YORK.

HolsTlNe-MACHIVNE.

Patented Jan. 1,5, 1907.

Application iiled May 24, 1906. Serial No 318,443.

with devices for rotating or swinging the derrick horizontally, raising and lowering the boom, and raising and lowering the grapple or tackle hook which carries the load.

So far as I know, heretofore swinging of the derrick has been effected by means of a turning cable or line passing with its intermediate or central part around the turning or bull wheel securedto the mast and with its opposite ends around derrick-swinging drums, either of which could be connected with a driving-shaft, while the other was free on said shaft. As the tight swing-drum rotated with the driving-shaft the corresponding end of the swinging or turning cable was wound upon the same, while the opposite end of this cable was unwound from the other or loose swinging or turning drum. N o means were provided for controlling the movement of the loose swinging drum, and as a result the same was liable to pay out the cable faster than the same was taken up by its companion tight drum, which produced a slack in the trailing end of the swing-cable, which necessitated the employment of take-up rollers and other'devices for keeping the cable taut. This was objectionable not only on the account of the undue wear upon the swing-cable owing to the employment of the take-up devices, but also on account of the loss of control of the derrick on the slack side of the cable, inasmuch as there ywere no reliable means for preventing the boom from swinging in the direction which it was being pulled by the tight swing-drum beyond where it was y swinging drums, and a main drumH, mountwanted.

The object of this invention is to provide simple, efficient, and durable means for maintaining an operative connection between the two swinging drums, whereby the same are always retained in a definite relation to each other and the same are compelled to rotate in opposite directions at the same rate, whereb)T one end of the swing-cable is wound up on one ofthe swinging drums, while the other end of the swing-cable is paid out in the same measure, thereby preventing undue slack in the same and avoiding the necessity of employing special take-up devices and also main,

taining full control of the derrick during all parts of its swinging movement. v

In the accompanying drawings, consisting,

of two sheets, Figure l is a fragmentary very chine having its swinging d rums equipped with my improvements. Fig. 2 is a top plan vview of the same. Fig. 3 is a vertical trans- -verse section in line 3 3, Fig. 1. =ragmentary perspective view of the derrick F1g..4 is a and hoisting-machine,` showing the application of my invention.

Similar letters of reference indicate the corresponding parts throughout the several views. y

The derrick which is operated by my improved hoisting-machine may be of any usual and well-known construction, that shown ,in

the drawings consisting of an upright masty f A, which is capable of horizontal rotation or turning by means of a swing line or cable B,

B', passing with its central or intermediate part around a turning or bull wheel a at the lower end Iof the mast, a laterally-projecting boom C, pivoted at its inner end to the lower part ofthe mast and adapted to be raised 'and lowered by means of a boom line or cable c, operatively connected with the outer end of the boom, and a tackle-hook or grapple D for attachment to the. load depending from the outer end of the boom and operatively connected with the mainline or cable d.

The main parts of the hoisting-machine (shown in the drawings for illustrating the application of my invention) consist of two derrick swinging or turning drums E E', mounted side by side on a driving-shaft e, which is journaled transversely at the front end of the main frame F, a boom-drum G, mounted on the main frame in rear of the ed on the Jframe in rear of the boom-drum. The opposite ends of the swinging cableare wound ,on the two swingingy drums, respectively, both of these cables being wound around these drums in the same direction. The hauling end of the boom-cable is wound around the boom-drum, and the corresponding end ofthe main cable, which operates the ltical longitudinal section of a hoisting-ma- IOO tackle-hook, is wound around" the main drum.

Between the twoy swinging drums a drivcouplings, each of whichconsists oi a coupling rim-or flange y, of wood, secured to one side of thev driving-wheel and havingv its V-'shaped or tapering-'Outer edge' engaging with` acorr'espondingly-shap'ed annular groove y, in the innjer 'side of awheel K ontlje adjacent inner' en'd of oneY of thev lswinging drums. Upon nio'ving' either of the"L swinging` drums axially on the driving-shaft Itoward the drivingwheel its wheel K will grip the coupling,- flangefoi the'driving-wheel and cause' trie respective swinging dr'u'm to rotate with the driving-shaft. Upon moving the swinging aiially away from the driving-wheel sufii'ciently'to losen the gripl ofl the couplingii'aii'g'e' on the wheel of the respective drum tlhielatter will be unco'upled from the driving- S a t.-

The means shown in the drawings for moving the swinging drums axially inward and' coupling the saineA with the drivingshaft consists of two rotary shifting collarsor sleeves L'L, mounted loosely on the drivingshaft and each bearing with its plain inner end against'tl".eouter end of one of the'swinging drums, while its Outer end is provided with 'a 'cam or inclined face l, which engages lwith a corresponding cam or inclined tace fm, seciir'edt the adjacent stationary part of the main frame; AUpon rotating the shifting sleeve forwardly the operation of its cam against` the companion cam on the main traine 'c'auses the `adjacent swinging drum to be moved toward the driving-wheel for coupling the same therewith, while upon moving said 'shifting sleeve backwardly the respective swin ing drum is permitted to 'free itself from the rivi'ng-wheel. These shifting sleeves are operated by means oia horizontal rockshait N, journaled transversely on the main rame'b'elw the swinging drums, va iorwa'rdlyp'rj ecting' rock-arm or on'the rock-shaft, Iconf nect'ed "by alink 1p with a rearwardly-projecting' army onto'neof the shifting sleeves, and a "rearwardly-projecting rock arm o on the y'r'ockj-jshaft,connected by a link p with a rea-r- 1r wardly-projectingarm'q on the other shift-ing f sle'e'fe.4 These parts are `so constructed that 'when lthe'rock-shait N is in itsjcentral vposition erative position and either foi the swinging mais wint@ qoupiea with @admiring-wheel,

but upon turning 'the 'rock-shaft toward ione "side of its'central 'position one 'of the shifting 'sleeve'swill 'be 'turned forwardlyk or -in the direction which `causes its companion "swinging drum to be moved intov operativ-e engagement with the driving-wheel, while upon moving the rock-shaft toward the other side foi' its center the swinging drum which has just been coupled will now be uncoupledy from the driving-wheel and the other swinging vdrurn will be coupled with the driving-w ieel by the cam action oi the vother shifting sleeve.

The shifting of the rock-shaft is effected by a hand-lever R, connected with one end thereof, and the same is locked in different adjustedpositions by means of a catch 1^,

Vmounted on the hand-lever and adapted toengage with a tooth-segment s.

Vhenever one of the swinging drums is #coupled with. the driving-wheel the respective end of the swinging cable or line vis wound upon the same, while the other end of y this cable is unwound from the other swinging drum, which turns in the opposite direction, thereby turning the bull-wheel,l around which the central part of the` swinging cable passes, and also swinging the derrick, the mast of which carries the bull-wheel.

The parts thus tary described are well known and are shown merely to illustrate the application of my invention.

The means for causing the turning or swinging drums to turn in unison, so that the turning-cable unwinds Jfrom one drum in the same measure as it winds up on the other, is preferably constructed'as follows: t represents a toothed or gear rim arranged on the periphery of the wheel'K of each swinging drum,so that the same also forms a gearwheel. U represents an intermediate or con-y trolling gear -pinion .arrangedy across the iront of both gear-wheels K andhaving itsl pivot a arranged at right anglesorradially relatively -to the aXis of the driving-shaft and swinging drums. This pivot is supported von the center oi a horizontal cross-piece'c, which is arranged in front of the pinionand earwheels and connects the iront ends o the side pieces of the main frame. The intermediate vgear-pinion meshes on opposite sidesof its center with the gear-wheels of both swinging drums, whereby these gear-wheels and drums are compelled-to turn in opposite directions.

1t followsfrom this construction that Y when one end of the -turningor swinging cable is wound up by kthe forward turning movement ci one swingingdrum the other en'd ofthe swinging cable be unwoundlat the same rate by'the backward movement of A the Aother swinging drum. By this means both oi cthe shitting vsleeves willib'e :in an inop- 1 the swinging Amovement Aof the der-rick =is obtained, which isnot the case when the paying-out swinging drum is uncontrolled.

The intermediate gear-pinion shown in the drawings consists of a disk having a radial row of pins arranged on one side for engagement with teeth of the ear-wheels K; but it is obvious that other orms of gearing for transmitting the movement from one swinging drum to the other are within the scope of my invention.

I claim as my invention- 1. A hoisting-machine having two drums around which opposite ends of a derrickturning line are adapted to be wound and a gearing interposed between said drums and operating to turn one drum forwardly while the other drum turns backwardly, substantiall y as set forth.

2. A hoisting-machine having two axiallyalined drums around which opposite ends of a derrick-turning line are adapted to be wound7 and a gearing interposed between said drums and operati ng to turn said drums n opposite directions, substantially as set ort 3. A hoisting-machine having two axiallyalined drums around which opposite ends of a derrick-turning line are adapted to be wound, gear-wheels arranged on said drums, and an intermediate gear-pinion meshing on opposite sides with said gear-wheels, substantially as set forth.

4. A hoisting-machine having two axiallyalined drums around which opposite ends of a derrick-turning line are adapted to be wound7 gear-wheels arranged on the inner ends of said drums, and an intermediate 6. A hoisting-machine having a drivingshaft, two drums which are mounted on said shaft and around which opposite ends of a derrick-turning line are adapted to be wound, a driving-wheel arranged between said drums and secured to saidshaft, means for coupling and uncoupling said drums and driving-shaft, gear-wheels arranged on the inner ends of said drums, an intermediate gear-pinion arranged at right angles to the axis of said shaft, drums and gear-wheels and having its teeth meshing on opposite sides of its center with the front side of said ear-wheels, and a cross-piece arranged in ont of said pinion and supporting the pivot thereof7 substantially as set forth.

Witness my hand this 8th day of May, 1906.

GEORGE L. TREDO.

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