US637766A - Means for driving dynamos from car-axles. - Google Patents

Description

Patented Nov. 2s, |899.

J. L. CHEVELING.

MEANS FDR DRIVING- DYNAMOS FROM CAR AXLES.

2 SheeIS i Sheet I.

(No Model.)

...III

I I I y f l I.

In 1m No. 637,766. Y Patented Nov. 28, |899. J. L. CREVELING.

d, .'ME'NSVFR DRIVING DYNAMUS FROM CAR AXLES. i Application med .my so, 189m y' No Model.) 2 'sheets-sheet 2.

UNITED STATES RereNr JOHN -L. cREvELING, on NEW YORK, N. Y.

MEANS FOR DRIVING DYNAMOS FROM CAR-AXLES.

SPECIFICATION forming part of Letters Patent N o. 637,766, dated November 28, 1899. Application filed July 3f), 18.98. Serial -No- 687,289. (No model.)

' To @ZZ whom it may concern:

car-axle, in the use of which the mechanism' is practically operative under all conditions and the armature-shaft of the dynamo extends endwise of the car, making it possible to draw out the armature, if necessary, without taking down the dynamo or removing the truck from under the car.

My invention belongs to that class of apparatus in which a belt is employed to communicate power from the axle to the armatureshaft; and it consists in part in providing means for utilizing an endless belt without having it to pass around the car-axle, whereby the employment of a splice in the belt is avoided.

My invention'is also designed to avoid the use of a pole-changer in circuit with the dynamo by compelling, through the employment of a single belt, the rotation of the armature in the same direction regardless of the direction of rotation of the car-axle.

In the accompanying drawings, Figure I is a sectional view of a portion of a car-truck, illustrating a dynamo and mechanism for operatively uniting it to the axle. Fig. II is a top plan view of a portion of acar-truck, illustrative of the subject-matter shown in Fig. I. Fig. III is a view similar to Fig. I, showing means for causing, in connection with a single belt, the rotation of the armature in one direction, regardless of the direction of rotation of the axle. Fig. IV is a top plan view of a portion of the subject-matter of Fig. III.

Referring to the gures on the drawings, 1 represents a car-truck, 2 a pair of wheels, and 3 an axle which carries them. The cartruck and its axle may be of any ordinary or suitable variety and are illustrated only as one of the many types of truck to which my machine is applicable.

4 indicates a dynamo Whose armature-shaft 5 is disposed endwise of the car-that is lto say, at right angles to the axle 3. The dynamo is supported by the bracket 6 in proximity to the end of the cartruck and in such a inanner that its armature may be easily drawn out at the end of the truck. The brushes and commutator may be placed in position to facilitate their inspection-as, for example, in a box 7 at the end of the car-truck. Se.- cured to the end of the armature-shaft 5 I provide a sheave S and preferably opposite to it an idler 9, which, being carried upon a stud 10, projecting from a slotted frame 1l, that is secured to a bracket-support 12, as by bolts 13, working in its slot, is adapted to be actuated by a spring 14, set between anglearrns l5 and 16 on the bracket 12 and frame 11, respectively. The idler 9, although defined as carried upon a stud 10, is essentiallyT only separated from the she-ave 8 and its shaft and may be mounted in any way which will provide a clear space between those two parts.

17 indicates an abutment-screw for regulating the tension of the spring 14.

An endless belt 18, passing around the sheave 8 and idler 9, respectively, derives power from the axle 3 through intermediate sheaves secured to the axle.

In the form of embodiment of my invention illustrated in Figs. I and II, 19 indicates one of said driving-sheaves, which is split and ixedly clamped upon a split bushing 2O around the axle, so as to revolve with the axle and to transmit power from it. One bend of the belt 18 works in the sheave 19, while the opposite bend thereof works ina loose sheave 2l, revolving upon the bushing 20, as between rings 22, secured to the bushing.

'From the foregoing description it will appear that the belt 18 may be applied in practice to the sheaves 8, 9, 19, and 21 without the necessity of passing it around the caraxle. Consequently the belt may be applied without taking the wheels from the truck. This affords facility of applying or replacing the belt. Moreover, the belt may be made without a splice or joint, which in a belt traveling at a high rate of speed over small pulleys it is important to avoid. The belt, as illustrated, is a round belt, which may be made of wire, Manila rope, or leather; buta IOO 3o dynamo.

flat belt may be substituted for the belt, .ipreferred 'K It may be observed that through the eml ployment of the arrangementof sheaves illus-` 5 trated and the endless belt through which they are operatively united a good are of contact both with the armature-sheave 8 and the driving-sheave 19 is secured. The extent of the arc of contact may be augmented by lorou nld lo eating the idler 9 on the same side of the axle:

3 fas the sheave 8, instead of upon the oppositeside. u K- Y A,

In Figs. III and IV, IV illustrate as carried l' `by the axle 3 sheaves 23 and 24, suitably i5 mounted, as vupona sleeve 25, with. an intermediate spacing-ring 26..v Through the aid,

for` example, of suitable paWl-and-ratch'et mechanism `27 and 28, provided u'pon'the-v respective sheaves, and the sleeve 25, each 2o sheave is adapted to be driven by the rotation votally supported so as to leave a clear space between it and said fixed sheave, and an endless belt passing from the armatnre-sheave to theidler against the axle-sheaves', and in4 0perative Contact with each' sheave, substantially as set forth.

2. lThe combination with a truck and rotalof the" axle in one direction and to revolve loose upon it in the other direction,the sheaves being adapted to bejdriven, respectively, by

the rotation of the axlein the opposite direc- 25 tions. By this ine-ans' the armature-shaft 5 is always rotated in the same direction','re#

gardless of the direction ofthe rotation of the,

`car-axle, thereby avoiding the necessity'of the'use of a pole-changer in circuit with the In' practice the pa'wls illustrated -in Figs.`

III and IV are preferably made quit'eheavy,

so that when the axle isrevolving at consid- 'eable vspeed centrifugal force will cause the 3 5 one not engaged to stand lclear of its ratchet, thereby avoiding unnecessary noise and Wear.

It isrnot my intention to limit myself to the details of construction hereinbefore .illus trated ``and described. The elements illus- 4o trated inthe drawings and referred to in the specification are selected as well adapted for the purpose of driving a dynamo by power taken from a car-axle through the employment of a single endless belt.

tory axle, otV a nxedv and; ay movable sheave upon the axle, a dynamo whose armatureshaftisdisposed endwise of the truck, a fixed sheave upon the armature-shaft, a stud-supported idler, andan endless beltpassing from the armaturesheaveto the idler against the zaxleesheaves, and in operativel contact with each sheave, substantially as set forth.

3. The combination withl a't'ruek and rotatory axle, of 'a fixed and movable sheave upon the axle, a dynamo Whose armatureshaft is provided with a Iixed sheave locatedl upon one sideof the axle-sheave, a springiactuated idler pivotally supported upon one side only, and an endless belt passing from the armatn reshaft tothe idler against the axle-sheaves,

and in operative contact with each sheave, substantially as set forth.

In testimony of allfwhich I llave hereunto subscribed my name.

' JOHN L.`CREVELING.

Witnesses:

ELMER E.ALLBEE, RUDOLPH E. BRUCKNER.

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