US739772A - Car-truck. - Google Patents

Description

PATENTED SEPT. 22, 1903. w. s. ADAMS.

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APPLIOATION TILED FEB. 25, v1903.

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OAR-TRUCK.

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I ATTORNEY No. 739,772. PATENTED SEPT. 22, 1903. W. s. ADAMS. GAR TRUCK.

APPLIUATION'FILED FEB. 25, 1903.

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UNITED STATES Patented September 22, 1903.

PATENT OFFICE.

WALTER S. ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN A. BRILL, OF PHILADELPHIA, PENNSYLVANIA.

CAR-TRUCK;

SiEGIFICATION forming part of Letters Patent No. 739,772, dated September 22,1903.

Original application iiled June 21, 1902, SerialNo. 112,588. Divided and this application filed February 25, 1903. Serial lilo. 144 9655 (No model.)

adapted to be employed in connection with electric motors, and has more especial relationship to trucks wherein the bolster is supported on longitudinally-disposed upwardlyarched simi-elliptic or leaf springs arranged on each side of the truck beneath the top bar of the side frames.

The object ofmy invention is to simplify and reduce the cost of construction and maintenance of trucks of this kind and at the same time preserve a great many of the features of trucks of this class-name1y, better equalization of the load under varying cuditions of service, to produce an easy-riding truck both with reference to the superposed car-body andthe action of the truck on the track-rails, to enable the axles of the wheels to be brought comparatively close together to produce what is known as a short-wheel base-truck, and to secure many other desirable features hereinafter referred to.

This is a divisional application of the one filed by me June 21, 1902, Serial No. 112,588.

In the drawings forming part of this specification,Figure 1 is a side elevation of a truck made in accordance with my improvements.

Fig. 2 is a plan view of the same. Fig. 3 is asection taken on the line 3 3 of Fig. 5 and looking in the direction of the arrows; Fig. 4, a detailed view showing a modified form of link and the parts codperating with it. Fig. 5 shows a modified form of spring and bolster connection.

Similar reference characters designate sim ilar parts throughout the various views.

The truck consists of the usual axles 1, wheels 2, and axle-boxes 3. The frame comprises the side frames having axle-box yokes or pedestals 4, inner and outer arms 5and 6, extensions 7 from the outer arms connected transversely by cross-bars 8, the inner arms bolts 26.

being connected by top bars orchords 9, and between the tops of the axleboxes 3 and the axle-box yokes extend the usual axle-box springs 10.

On the inner pedestal-arms 5,adjacent their lower ends, are formed inwardly and longitudinally extending lugs 11, opening upwardly and having strengthening-webs 12 and'upwardly and downwardly flared openings or perforations 13. The pedestal-arms are connected together by means of tie-bar 14, and the arms of the yokes may be joined by the short bars 15.

A1116 are the transoms formed of angle-iron, with their inner vertical faces 17 opposed to each other and their horizontal flanges 18 secured to inwardly -extending bracket-like webs 19, extending inwardly from the top bars 9.

The upper portions of the perforations 13 are flared with a spherical surface, sons to form a ball-and-socket joint forthe heads 21 of the links 21, the lower end of said links being secured to the stirrups 22, through which passes a bolt 23, about which the ends of the semi-elliptic springs 24 are secured. Whenever pressure is applied to or removed from these springs, they are free to elongate or shorten, because the lower flared portion of the perforations 13 permits a free swing ing movement of the links 21 Within the suitable limits.

The semi-elliptic springs 24:, which are longitudinally disposed beneath the bars 9, are upwardly arched and at their centers are joined by the bolster 25, the ends of which are fixed on said springs by means of strap- The bolster 25 consists of a lower bar 27, which rests upon the spring-band 26, against which the straps 26 abut, a wooden filling 28, and an upper arched bar 29. The bolster rests between the vertical surfaces 17 of the transoms and may be provided on the upper surface with the usual center and side bearings 30 31.

If a more flexible connection is desired between the semi-elliptic springs 24 and links 21, it may be had in the manner shown in Fig. 4, in which the stirrups 22 are replaced by the longer stirrups 30, each having a crossbar 31 at their lower extremity. The said bars 31 have threaded ends 32, which receive nuts 33 to hold them in position, and are provided at their centers with a socket-plate 34, having a circular depression 34, in which rests a spherical lug 35, formed on the lower surfaces of a frame 36. The upper portions of the frame 36 consist of arms 37, connected by abolt 38, to which the ends of the semielliptic springs may be attached.

In Figs. 3 and 5-are shown a less-rigid connection between the bolster 25 and the springs 24. In this modification the said bolster is supported by means of links 39, which are seated upon the recessed plate 40, secured on top of the band 41, 26 of the springs 24, the links resting in grooved recesses terminating in the bibs 42, which keep the links in place, and upon the lower portions of the links rests a casting 43, which likewise is recessed and bibbed and which in turn supports the ends 44 of the bolster-plates 27 29, the said ends 44 resting between the links and under the springs, the flanges 45 of the casting 43 being secured to the ends 44 by bolts, as shown in Fig. 3.

By means of the structure hereinbefore described I am enabled to construct a truck wherein jars and undesirable vibrations are mimimized and the wear and tear of both car and truck are greatly reduced.

While Ihave shown and described certain embodiments of my invention, it is obvious that many others may be made which come within thescope of the following claims.

I claim 1. In a car-trnck, a frame with pedestals,

perforated lugs projecting inwardly from said pedestals, swing-links supported by said per forated lugs, semi-elliptic springs engaging said links.

2. In a car-truck, a frame with pedestals,

joints with said perforated lugs, and semielliptic springs connecting said links.

3. In a car-truck, a frame with pedestals, perforated lugs projecting from said pedestals, links suspended by said perforated lugs, semi-elliptic springs engaging said links, and a bolster connecting said springs.

4. In a car-truck, a frame with pedestals, perforated lugs projecting from said pedestals, links suspended from said perforated lugs, a cross-bar havinga socket in the lower portion of said link, a frame resting in said socket, and semi-elliptic springs resting in said frame.

5; In a car-truck, a frame with pedestals, perforated lugs projecting from said pedestals, links having a ball and a socket connection with said perforations, stirrups at the ends of said links, a cross-bar in said stirrups having a semispherical socket, a frame with a projection on its lower surface engaging and fitting said socket, and semi-elliptic springs engaging said frame.

6. As an article of manufacture, a side frame, for trucks comprising a top bar and pedestals, projecting lugs from the inner arms of said pedestals, and perforations in said lugs having upwardly-flaring portions.

'7. As an article of manufacture, a side frame for trucks comprising a top bar and pedestals, perforated and inwardly-project ing lugs on the inner arms of said pedestals, said perforations having upwardly and downwardly flaring portions.

8. A truck-link, comprising a stirrup having a cross-bar with a hemispherical socket and a frame having a projection resting in said socket.

Signed in the city and county of Philadelphia, State of Pennsylvania, this 27th day of January, 1903.

.WALTER S. ADAMS.

Witnesses:

WARREN M. SMITH, WILLIAM B. CLARK.

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