US628658A - Electric-lighting apparatus for railway-cars. - Google Patents

Description

No. 628658. 4 Patentd Iuly Il, i899. C. A. GDULD.

:ELECTBILIGHTING APPARATUS FOR RAILWAY CARS.

(Appximion med my 7, fees.) ;(No Model.) 2 Sheets-Sheet l.

Tm: Norms Patins m, PHGToMTHo WASHINGTON. u. c.

No. 628,653. Patented .IuIy II, |899. C. A. GULD.

ELECTRIC LIGHTING APPARATUS FOR RAILWAY CARS.

(Appnmion med my 7, 189s.)

2 Sheets-Sheet 2.

(No Model.)

.wfwmw UNITED STATES PATENT OFFICE.

ACHARLES A. GOULD, OF NEW YORK, N. Y.

ELECTRIC-L-IGHTlNG APPARATUS FOR RAILWAY-CARS...

SPECIFICATON forming part of Letters Patent No. 628,658, dated July 1 1, 1899.

Application filed July '7,1898- Serial Nor 685,306. (No modelJ yTo @ZZ 'Ll/hom, t 71mg/ conce/vt:

Be it known that I, CHARLES A. GOULD, a citizen of the United States, and a resident of New York7 in the county and State of New York, have invented a new and useful Improvement in Electric-Lighting Apparatus for Railway Cars, of which the following is a specification.

This invention relates to that class of eleotric-lighting apparatus for railway-cars in which the dynamo is driven from the car-axle by a belt and the dynamo is movable toward and from the drivin g-aXle, so that the belt slips when the speed of the driving-axle exceeds that which is necessary to properly drive the dynamo, thereby neutralizing any excess of speed and maintaining` a practically uniform normal speed of the dynamo. To enable the dynamo to be ettectually actuated with such a driving-belt, it is necessary to placeA the dynamo directly over the drivingaxle, so that upon loosening the belt, which is substantially vertical, it moves out of contact with the under side of the pulley on the driving-axle. Vhen the dynamo is arranged in this manner, the vertical vibrations of the car alternately stretch and loosen the drivingbelt, causing `the dynamo to be driven at a variable instead of a uniform speed and producing an unsteady light.

The object of my invention is to mount the dynamo on the car in such manner thatit remains at all times practically in the same relative position to the car-axle notwithstanding the vibrations of the car, thereby keeping a uniform tension on the belt and maintaining a uniform normal speed of the dynamo.

In the accompanying drawings, consisting of two sheets, Figure l is a sectional side elevation of a dynamo mounted on a car in accordance with myinvention. Fig. 2 is an end elevation, partly in section, looking toward the dynamo. Fig. 3 is a top plan View of the dynamo and the adjacent portion of the car. Fig. 4 isa cross-section in line i 4, Fig. l.

Like letters of reference refer to like parts in the several gures.

Ais the car-frame; A', the lloor ofthe car; B, one of the car-axles, and B one of the wheels mounted thereon.

C is the dynamo, mounted on the car-body Iabove the axle B and preferably arranged within the car.

c is the armature-shaft, having the drivingpulley c, and D the upright driving-belt running around the pulley of the armature-shaft and a pulley D', secured to the car-axle B and passing through openin gs in the car-Hoor, as shown. The dynamo is capable of moving vertically toward and from the oar-axle, and in the construction shown in the drawings the same is arranged to slide between upright guides or standards E, secured to the cartloor, tour such standards being preferably employed and the dynamo being provided at its four corners with grooved guide-rollers e, which run on the rails of the guides E and whereby the friction is reduced to a minimum.

F represents springs which yieldingly support the dynamo, so as to allow it to maintain its proper position under the vibrations of the car. One of these springs is arranged vertically at each end of the dynamo, and the springs are inclosed by upright telescopic cylinders G, the upper sections g of which are formed on or secured to the dynamo-frame, while their lower sectionsg' are mounted on upright adjusting-screws H, whereby the cylinders can be shortened or lengthened, so as to increase or diminish the tension ot the springs for regulating the tension of the belt or loosening the samewhen it is desired to stop the dynamo. The adjusting-screws H are provided at their lower ends with collars or sprocket wheels h, which are confined against vertical movement by suitable means, and the screws engage with screw-threaded openings formed in the closed lower end of the lower cylinder-sections g', so that upon turning these screws in one or the other direction the lower cylinder-sections are caused to move vertically in the upper cylinder-sections, thereby moving the dynamo away from the driving-axle or allowing the same to move by gravity toward the axle. The lower cylinder-seotions, while free to slide in the upper sections, are held against turning in the saine by a longitudinal feather and featherway formed on the respective parts, as shown in Fig. fi. The two adjusting-screws are connected together by a horizontal belt or sprocket-chain I, running around their actuating- IOO wheels 7L, so that upon turning one of the screws bot-h screws are adjusted simultaneously and the dynamo is raised or lowered uniformly at both ends. One of the screws is extended upwardly through the adjacent cylinder G and its projecting end is made square or fiat-sided to receive a suitable wrench for turning` it. Upon turning this screw forwardly the lower cylinder-sections are caused to rise on the screws, thereby increasing the tension of the springs and that of the driving-belt, while upon turning the screws backwardly the lower cylinder-sections are caused to descend on the screws, thus diminishing the tension of the springs and of the driving-belt. When it is desired to stop the dynamo, the belt is loosened sufficiently to allow it to fall away from the under side of the pulley on the driving-axle. 3y this construction the belt can not only be tensioned foralways driving the dynamo at the proper normal speed, but the dynamo is cushioned or yieldingly supported, so as to be unail'ected by the vertical vibrations of the car, thus allowing the dynamo to accommodate itself to the vertical movements of the car without materially affecting the tension of the belt when once adjusted and insuring a uniform output of the dynamo and a correspondingly steady light.

l claim as my inventionl. The combination with a railway-car having one of its axles provided with a pulley, of a dynamo yieldingly mounted on the car above said axle, so as to be capable of moving vertically toward and from the same, and a drivingbelt running around said pulley and the pulley of the dynamo-shaft, substantially as set forth.

2. The combination with a car-body having upright guides arranged above one of the axles of the car, of a dynamo sliding on said guides, a spring or springs which tend to move said dynamo away from said axle, and a driving-belt for transmitting motion from said ear-axle to the dynamo-shaft, substantially as set forth.

fitness my hand this lith day of June, 1898.

CHARLES A. GOULI).

Witnesses:

CHARLES M. Go'ULn, Cassius W. GoULn.

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