US423470A - Street-car running-gear - Google Patents

Description

(No Model.)

A. V. DU PONT. STREET GAR RUNNING GEAR.

Pat nted Mar. 18, 1890.

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UNITED STATES ALFRED v. DU PONT, on

PATENT OFFTCE,

LOUISVILLE, KENTUCKY.

STREET-CAR RuMauve-enfin.

SPECIFICATION forming part of Letters Patent No. 423,470, dated vlVlarch 18, 1890.

Application ned october 24, 1889.

To all whom it may concern.: Be it known that I, ALFRED V. DU PONT, of Louisville, in the county of Jefferson and State of Kentucky, have invented certain new IIS and usefulvImprovements in Running-Gear for Street-Cars; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art -to which it pertains to make and use the same.

My invention relates to improvements in running-gear for street-ears; and lit consists in certain features of construction and in combination of parts hereinafter described, and pointed outin the claims. l

In the accompanying drawings, Figure l is a side elevation, partly in section. Fig. 2 is an elevation in transverse section on line a:

' Fig. 1.

A represents the body of the street-car, to which are attached angle-plates a. The lateral legs of these plates underlap the car-sills, to which the plates are bolted.-

B .are the car-wheels, and C the journalboxes for the car-axles. On either side of the car is a rigid side bar D, extending from one journal-box to the other, the end sections of these side bars being bent approximately into inverted-U shape, constituting yokes D', that embrace with an easy fit the respective journal-boxes, the latter having external ribs c c, extending along the sides and top thereof, between `which pair of ribs the respective yokes iit easily. O11 either side and close to thejournal-boxes the side bars are swelled out laterally in rounded sections d d, these rounded sect-ions being countersunk from the top to form seats for rubber rings or springs The extremes d d of the side bars exsenin No. 327,974. (No model.)

G are spiral springs, the lower ends thereof l resting on the respective disks E, bosses e'fitting loosely inside the springs to serve'as guides for the latter. The upper end of these springs abut the under sides of the plate a aforesaid, the latter having depending' bosses a', that fit loosely inside the upper ends of these springs and serving as guides for the springs.

H are vertical rods or steady-pins, the upper sections thereof being of large size, the same fitting snugly in the bore of bosses a. The sections of these rods next below bosses a are of the inverted conical variety, whereby maximum strength is combined with .minimum lightness, and the reduced sections of the rods next below the conical sections thereof extendingdown through thelarge central openings, respectively, in bosses c, rubber rings F, and sections d of the side bars, the comparative size of these openings and the reduced sections of thel rods being such that the rods are supposed never to come in contact with these members d, e, and F. Below the side bars each pair of rods is con- `nected by means of straps I, the latter extending underneath the intermediate journalbox; but the strap is not supposed to come in contact with the j ournal-box except, perhaps,`

in case of violent jolting ofthe car. RodsH have shoulders h, against which straps I are rigidly secured by means of nuts h. Usually pins h2 are provided to prevent the possibility of these nuts losing off. With such construction, the side bars'couple the journal-boxes on either side of the car, so that they support each other, more especially Vagainst longitudinal strain, and a blow'delivered onthe one wheel-nas, for instance, in runningl over an obstruction-is sustained about equally by each box on the saine side of the car.

It is desirable in street-cars to have no conn tinuous metal attachment from runnin g-gear to car-body, otherwise the metallic ring,` of the Wheels will be transmitted to the carbody, resulting in excessive, disagreeable, and unnecessary noise inside the car. With the construction shown the metal attachments are entirely disconnected by means of the rubber rings F aforesaid, by reason of which the noise from the'running-gear is reduced to a minimum inside the car.

In the matter of convenience I niayremark that by removing pin h2 and nuts 71, the carbody may be lifted from the trucks, after which the side bars may be lifted from `the journal-boxes, thus separating the parts and leaving each car-axle and Vits wheels free, and the parts may be re-asseinbled with equal facility. j

Heretofore'jointed side bars have been used for the purpose; but the joints thereof.

were subject to Wear, in consequence of which the joints would become loose and would not4 hold the parts with sufficient accuracy; also,

the journal-boxes coupled with such jointed side bars would,'in case the springs were of unequal tension, cant forward or rearward, as j the case mightbe, thereby affecting the alignment of the axle. With my improved rigid side bars the journal-boxes always maintain their proper position and the axles remain always parallel.

What I claim isl. In running-gear for street-cars, the coinbination,vwith side bars each having integral yokes for the reception of the j ournal-bjoxes ofone side and the journal-boxes resting within and supported solely by said yokes, of Vthe rubber springs resting on the'side bars on opposite ysides of each yoke, the metal i springs supported by said rubber springs, the

stead y-pins depending from the car-body and passing looselythro'ugh the metal and rubber springs, and the yokes connecting the lower v ends of each pair of steady-pins, substantially l as set forth.

2. In running-gear for street-cars, in combination, journal-boxes, side bars connecting each pair of boxes, such side bars having in-v tegral yokes adapted to directly embrace and rest on the respective boxes, each side baron either side of the respective journal-boxes having depressed se'ats for rubber rings, caps resting on the rubber rings, spiral springs resting on the respective caps, the upper ends of the spiral springs engaging seats under the car-body, depending rods rigidly connected with the car-body attachments, such rods eX- tending, Without contact, through holes in the caps, rubber rings, and side bars, each pair of depending rods being connected by straps,-

the latterjextending under the intervening journal-box, substantially as set forth.

In testimony whereof I'si-gn this specifica- HENRY R. Du Pour, Jos. A. RICHARDSON.

tion, in the presence of two witnesses, this

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