US270279A - Crane - Google Patents

Description

(Nb Model.) 5 sneets-sneen 1.

. T. W. GAPBN.

TRAVELING CRANE.

Patented Jan. 9, 1883.

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(No'Model.)

T. W. GAPEN.

TBM/'BLING CRANE.

PatentedJan. 9, 1883.

N. PETERS vnuloLimognpmr. wuhingm. D. c

(No Model.) Y 5 sheets-sheen 3.

T. W. GAPEN.

TRAVBLING CRANE.

'Patented Jan. 9, 1883.v

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By his .dttorneyj mmwumplm. washington, u c.

(No Modell) 5 Sheets-,Sheet 4.

T. WOMEN. TRM/'BLING CRANE. No.Y 270,279. Patented Jan; 9,1883.

WITNESSES I .7V VEJVTOR Ny PETERS. Pnnmuumgmpher. wnshmgwn, D. C4

` 'sheets-sheet 5.

(N0 Model.)

T. W. GAPEN. TRAVELING CRANE.

Patented amQ, 1883.

Wl TNESSES W92 64./

UNITED STATES 'rHoMAs W. oAPEN, on sra-MEOED,

coNNEcricUr, Assienon nio THE YALE LOCK MANUFACTURING COMPANY, OF SAME PLACE.

'TRAVELING CRANE.

SPECIFICATION forming part of Letters Patent No. 270,279, dated January 9, 1se3,

Application tiled November 28, 1882. (No model.)

To all whom it mcy concern:

Be it known that I, THOMAS W. CAPEN, of Stamforthin the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Traveling Cranes, of which the following is a specification, reference bein ghad to the accompanyingdrawin gs.

My improvements relate to the crab mechanism and trolley ot' a traveling crane, and are illustrated in connection with atravelin g crane oi' the kind patented in the United States to Thomas A. Weston, December 25, 1877, No. 198,718, in which are two fixed cables, each extending from one end of one main track tothe opposite end of the other, crossing the space between the tracks upon the bridge which carries the crab mechanism and trolley, and together serving to impart the horizontal movements to the bridge and trolley, all of which is set forth in detail in the said patent.

The object of my present improvements is to so construct the combined crab and trolley which traverses'the bridge as to bring them as low down as possible, and thus diminish the overhead-room, necessary in a building for the operation of the crane, so that the height of hoist may be greater than with crabs as heretofore made. Where the overhead-room is limited this is very desirable.

In the drawings, Figure 1 is a plan view of a traveling crane of the kind mentioned, having a trolley embodying my improvements. Fig. 2 is a side elevation of the bridge and trolley. Fig. 3 is an end elevation of the bridge and trolley. Fig. 4 is a view of the trolley partlyin plan and partly in section on the line 4 4 of Fig. 6. Fig. 5 is a vertical section on the line 5 5 of Fig. 7. Fig. 6` is a vertical sec- .tion on the line 6 6 ot' Fig. 5. Fig. 7 is a similar section on the line 7 7 of Fig. 4.

Heretofore the entire crab has been above the upper line of the bridge-girders. This has of course necessitated the lowering of the bridge sufficiently below the ceiling or girders of the building to permit the crab to pass underneath when the crane is moving, and the creased hoist, Iehan ge the position of the hoist` ing mechanism 'to the outside and below the bridge-girders, so that the space required above the bridge is but little more than is necessary for the wheels of the trolley. With this construction lthe center et' gravity of the trolley and the mechanism it carries is brought down to or below thetops of the bridge-beams, so that with tracks otl very narrow gage the trolley isentirely secure in its position upon the tracks, and the mechanism it carries is brought down to a more convenient position for operation, so that the lengths of the chains, as illustrated in Figs.'2 and 3, are materially diminished.

I" employ wormshafts A, worms B, wormwheels C,and chain-wheels D, alike upon either side of the trolley in operation and effect, substantially as illustrated in my United States Letters Patent, No. 263,479, granted August 29, 1882.

E E indicate the hoisting and lowering wheels; F VF Fl F', traversing-wheels, which engage with the fixed cables (indicated in dotted lines, Figs. 1, 2,` and 8) for traversing the trolley.

Gr G indicate side castings, supported upon the shafts H H of the trolley-wheels I I I I, and furnish suitable bearings for the shafts running at right angles with the bridge.

K K indicate bevel-pinions upon the shafts of the hoisting and lowering wheels E E; and L L indicate corresponding bevel-pinions upon the worm-shafts, which have their bearings in suitable brackets, M.

N indicates cross-bars or stays, firmly holding the two side castings in place.

lt will be observed, particularly by reference to Figs. 6 and 7, that this construction leaves a central space, 0, wit-hin the trolley to aecommodate the bridge-beams P-P, and that the trolley and the hoisting and lowering mechanism it carries are practically suspended from the top of the bridge, so as to occupy as little space above the bridge as practicable.

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

1. In combina-tion, with a bridge of a traveling crane, the combined trolley and crab pro vided with a central bridge-opening, G, substantially as set forth. 2. The combination, with the side castings, of the Wheels E E and their shafts, the bevelpinions K K L L, and lthe Worm-shafts and worms, all geared with and located beneath the Worm-wheels, substantially as set forth.

3. The combination, with the side castings, of thetrolley-Wheels and axles above the bridge, and the traversing-wheels, chain-Wheels, and hoisting and lowering wheels and their shafts, located below the top of the bridge, substantially as set forth.

4. In a traveling crane, the combination vof 15 a bridge, a, combined crab and trolley so constructed as to span and surround the bridge, and having its operating mechanism placed at the sides and below the bridge, substantially as described.

AIn testimony whereof I have hereunto subscribed my name this 24th day of November, A. D. 1882.

THos. W. cAPEN.

Witnesses:

SCHUYLER MERRITT, GEO. E. WHITE.-

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