US425627A - peckeam - Google Patents

Description

4 M A V -v G E P H ELECTRIC UAR MOTOR.

' Patented Apr. 15, 1890.

WITNESSES:

INVENTUH MW ATTUR N EY.

4 M A H K C E D B ELECTRIC GAR MOTOR. No. 425,627.

Patented Apr; 15, 1890.

.imllllliiillllllumv IEIIIIIII 5Q INVENTORI WITNESSES:

ATTORNEY.

Y "cums vzrzns co., mumumm, msmnuwu a c (No Model.) 4 Sheets-Sheet 3.

E. PEOKHAM. ELEOTRIG'GAR MOTOR.

No. 425,627. Patented A ryls, 18.90.

WITNESSES:

INVENTORI WM Mug/M (No Model.) I 4 Sheets-Sheet 4.

E. PEGKHAM. BLBGTRIGYGAR MOTOR.

No@ 425,627. Patented Apr. 15,.1890.

Fug. 8.9

; ASHKNETDN, n. c

UNITED STATES PATENT OFFICE.

EDGAR PEOKHAM, OF NEW YORK, N.

ELECTRIC CAR-MOTO R.

SPECIFICATION forming part of Letters Patent No. 425,627, dated April 15, 1890.

Application filed December 2 1889. Serial No. 332,195. (No model.)

To all whom, it may concerm.

Be it known that I, EDGAR PECKHAM, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Electric Car-Motors, of which the following is a specification.

My present invention relates to electric carmotors, and to the manner of supporting the same on themotor-frame mounted on the truck.

The objects of the invention are to improve the construction of the core of the electromagnet, whereby the efficiency of said electromagnet is increased; to render the armatureshaft self-lubricating; to so connect the motorsupporting frame to the truck-frame as to secure a flexible connection between the two structures, whereby torsional strain is prevented when the car is traveling on a curve, and the motor and its gearing consequently relieved from liability of displacement or injury; to so mount the electromotor on its supporting-frame as to bring its weight more nearly in the longitudinal center of the truck, which also avoids the crowding of the motor proper with its gearing and counter-shaft.

In my organization I depart from the usual mode of supporting the arm attire-shaft, which consists in connecting one end only of said shaft to the side frame of the truck and gearing its opposite unsupported end with one end of the counter-shaft, while the opposite end of the latter shaft is geared to the axle of the drive-wheels. I support both ends of the armature-shaft in bearings on the motor-frame and gear said shaft near both of its ends, at each side of the .motor, to the counter-shaft, and gear said counter-shaft centrally, or midway between the side bars of the motor-supporting frame, to the axle of the drive-wheel, instead of connecting the counter-shaft to said axle at one end only. By this disposition of the parts I am enabled to produce a stable organization, not liable to derangement by the vibrations of the motor and truck, and also toinsureregularity of movement of the mechanism.

My invention will now be described, and the features of novelty pointed out in the claims at the end of this description.

In the accompanying drawings, which form part of this specification, and wherein like features are indicated by like letters of reference in the several views, Figure 1 is a top plan View of a truck upon which is mounted my electromotor and its accessories. Fig. 2 is a side elevation of Fig. 1. Fig. 3 is a vertical longitudinal section on the line ocof Fig. 1. Fig. 4 is a transverse section on the line y y of Fig. 1. Fig. 5 is asimilar view on the line 2 z of Fig. 1. Fig. 6 is aside view of the core of the electro-magnet. Fig. 7 is an end view of said core. Figs. 8, 8*, and 8 are detail views showing modifications in the manner of flexibly connecting the rear end of the motorsupporting frame with the axle of the drivewheel. Fig. 9 is a longitudinal sectional View through the line 1; 12 ofl, and Fig. 10 is alongitudinal scctionalview centrally through the chambered armature-shaft.

Referring to the drawings, A A indicate the axles of the truck; B B, the drive-wheels mounted on said axles, and O the truclcframe, supported on the axlesof the truck, as shown in the drawings or in anyother suitable manner. v

D D indicate two longitudinal beams supported in bearingscc on the axle Ainside the drive-wheels, and connected to' a transverse beam 1, secured to truck-frame G at a point sufficiently removed from the axle A to permit the electromotor and its gearing to be placed in position by hangers h, as shown in Fig. 5, and having their front ends curved and joined together, as seen in Fig. 1. To the curved front of the frame thus formed there is bolted the beam D ,preferably round in cross-section, which projects forward and is supported on the enlarged surface of box D which box is bolted to axle A. The 'object in making the top surface of box D of considerable width transversely is to afford a sufficient bearing for the swinging end of beam D when the motor-supporting'frameD D is being subjected to torsional strain.

WVhile the box D is fixed to axle A it is flexibly connected to beam D, so that the motorsupporting frame is practically swung on a pivot at its rear end, and said frame is thus permitted to partake of the vibratory and oscillatory motions of the truck when the latter Several modes of flexibly is being propelled.

to the box I) are connecting the beam D shown in the drawings.

In Fig. .8 the short bar D has one, of its ends pivoted between the forward jaws of box D by bolt (1, and its other end secured to the beam D by bolt d In Figs. 8 and 8 the short bar D is similarly connected to the box D In Fig. 8 the other end of said bar is supplied with a stirrup (1 passing through the bar and swung on a rod fixed transversely in the beam D. In Fig. 8 the outer end of bar D is provided with a horizontal bolt d w iich coacts with ametal piece dihaving an eye through which the bolt d passes, and which is prevented from being withdrawn therefrom by a nut screwed onto said bolt. By any one of these forms of connection I obtain the necessary lateral flexibility for the rear end of the motor-supporting frame.

Theletter e indicates the armature-shaft, a longitudinal section of which-is shown in Fig. 10. H This shaft is solid intermediate of its journals to give strength; butits journals are chambered or bored out, as shown in Fig.

10, to receive a lubricant. The hollow. jour-.

nals are provided with ports or perforations e, through which the lubricant is conveyed to the outside surface or hearing, and the ends of the journals are fitted with screw-plugs e The lubricant is supplied to the chambers of the. shaft by removing the screw-plugs e 'lheshaft is thus rendered self-oiling and itselficiency in the organization much increased. The shaft 6 is journaled in boxes secured to the-beams D D, and has fastened near its ends the pinions P P, as shown.

The electro-magnet is represented by F,

and it is somounted upon its supportingframe DD as to bring it practically in the center of the truck-frame, longitudinally and transversely. The advantage of this arrangement is that the weight of themotor is more equallydistributed over the truck-fram e, with-the effect of more nearly balancing the organization than is done in the forms of construction heretofore devised. To enable me to obtain this result, the heel of the magnet, to which tail-piece p is attached, instead of being sustained in front of the armatureshaft in close proximity to the counter-shaft, as is usual, is sustained at the rear of the armature-shaft or on that side thereof opposite the counter-shaft, the heel of the magnet being. supported vertically and yieldingly by means of arod z", suspended from the crossbeam I and passing through an eye in the tail-piecep, attached to the heel of the magnet, as stated. The bottom and protruding end of the rod iis provided with either a head or a-nut, with a washer upon it to serve as a seat for a spring 8, upon the topof which the tail-piece p rests. Another spring 8 is in-,

terposedbetween the top of said .tail-piece and the under side .ofthe cross-beam I, and

thus the heel of the magnet is supported be tween two springs disposed vertically, one over the other. By sustaining the heel of the magnet in the position indicated the space between the armatnrcshaft and driven wheel A is not unduly crowded, so that the counter- Between the armature-shaft e and the driven axle A, I arrange the counter-shaft f with its ends supported in boxes on the beams D D, and having gear-wheels g g fixed near its ends, which mesh with the pinions PP, as seen in the drawings. centrally enlarged circumferentially, as at Z,

in order to re-enforee and stiffen the same,

and upon this enlarged portion there is mounted the pinion O, which meshes with a The counter-shaft f is 2 gear-wheel O, secured to, thedriven axle A, I

which is also circumferentially enlarged at Z,

similar to counter-shaft f. I

By the above-described manner of mounting the motor on its supporting-frame, by

which the heel of the. magnet extends away.

from instead of toward thecounter-shaft and driven axle A, I am enabled to enlarge the several partscomprising the motor, so as to better adapt asingle ,motor for driving the car, the motor-supporting frame inthe present organization beingparticularly designed for cars to be equipped with but one motor.

The core of the magnetF I, form of two sets of longitudinal plates 'or bars a a, the plates at being longer than plates (1., as indicated in Fig. 1, in which a top .plan View of the mag net audits core isseen. These plates are placed side by side,first a plate a and thena IOD plate a, and alternate in this manner until,.

the required number of plates havebeen grouped together to form a core of there: quired thickness. These longitudinal plates. are united at their heelends by two sets of cross-bars b b. The bars bare not so long as'bars b, and the latter are placed between the longitudinal bars a, orlso as to abut with their edges against theends of the intermediate shorter longitudinal (bar a, while the IIO shorter bars I) areso placed. that their ends abut against the inner. surfaces of longitudinal bars a, asseen inFig. 7. Thecross bars I) b are thus interlocked with the longitudinal bars a a, and transversely through the interlocking portions of the several bars pass tie-bolts 2ft, which, in. connection with other tie bolts 2." 25, passing transversely through the several longitudinal bars, firmly unite the entire structure together. Tothe pole ends of the said longitudinal bars there is rigidly secured a non-magnetic tie-plate L. The core is thus built up in sections, which mode of construction has its advantages in the facilitywith which the quality of metal is selected and the metal prepared for the structure. I

The magnet is sustained in proper position with reference to the armature-shaft by means of yoke 11, mountediin hearings on said shaft near its ends and encompassing the magnet transversely. The set-screws oo pass vertically through the topand bottom rails of said yoke and bear against the magnet, as

shown in Fig. +1, thus holding the yoke firmly in place.

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

1. The core of an electro-magnet, consist-ing of two sets of longitudinal bars, one set of greater length than the other, a series of connecting cross-plates of two lengths uniting the heel ends of said longitudinal bars together, and a non-magnetic plate rigidly securing together the pole ends of the longitudinal bars, substantially as set forth.

2. The core of an electro-magnet, consisting of two sets of longitudinal bars, as a a, arranged side by side, the bars a being of greater length than the bars a, whereby the ends of the former extend beyond the ends of bars a, and two sets of cross-bars, as Z) Z), of different lengths, the bars of greater length Z) located between the projecting ends of longitudinal bars a, and the intervening shorter bars I) having their ends abutting against the inner surfaces of the longer longitudinal bars a, the whole united together substantially as set forth.

3. In an electric-motor truck, the combination, with asupporting-frame, of an armatureshaft solid intermediate of its journals, which latter are chambered or bored out and perforated, as at e, substantially as set forth.

4:. An armature-shaft constructed with a solid center and with lubricating-chambers at its ends, which are provided with ports or openings for conveying the lubricant to the bearings, and screw-threaded plugs for closing the ends of the chambers, substantially as set forth.

5. In an electric-motor truck, the combination, with a motor-supporting frame, of an electromotor having the heel end of its magnet said frame and having its heel end suspended by a flexible joint from beam I, which beam is arranged in rear of or that side of the armature-shaft opposite the counter-shaft, substantially as set forth.

'7. In an electric-motor truclga motor-supporting frame sustained at one end on one of the driving-axles and flexibly connected at its opposite end to the other driving-axle,in combinat-ion with a transverse beam bolted to the truck-frame proper intermediate of the drive. ing-axles and sustaining one end of the motor independent of the motor-supporting frame, substantially as set forth.

8. In an electricmotor truck, a motor-supporting frame journaled at one end on one of the driving-axles and sustained at its opposite end on the other driving-axle by a flexible connection, in combination with a transverse bar intermediate of the driving-axles and bolted to the truck-frame and connected to the motorsupporting frame by hangers, substantially as set forth.

9. In an electric-motor truck, the combination, with a motor-supporting frame j ournaled at one end on one of the driving-axles and provided centrally at its opposite unbroken end with a beam, as D ,of a box bolted to the opposite driving-axle and co-operatin-g with the unconfined extremity of said beam D, substantially as set forth.

10. In an electric-motor truck, a motor-supporting'frame journaled at one end. 011 the driving-axle and provided at its opposite end with a horizontally-projecting beam, and a box, as D having a flat top surface and bolted to the opposite driving-axle and sustaining the end of said projecting beam,whieh is also flexibly connected thereto, substantially as vset forth.

Signed at New York, in the county of New York and State of New York, this 22d day of November, A. D. 1889.

EDGAR PECK HAM.

Witnesses:

J. E. M. BOWEN, W. E. BOWEN.

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