US472271A - Truck for railway-cars - Google Patents

Description

(No Model.)

L. PFINGST '& S. A, BEMIS. TRUCK FOR RAILWAY ems.

No. 472,271. Patent.edApr.'5, 1892. v

5 a -WJ0EL9I/40 51/72 a mgj q n o z; w Z O O f UNrrE STATES LOUIS PF IN GST, OF BOSTON, AND SUMNER A. BEMIS, OF SPRINGFIELD, MASSACHUSETTS.

TRUCK F OR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 472,271, dated April 5, 1892. 7

Application filed November 28, 1891. Serial No. 413.437- (No model.)

To aZZ whom, it may concern: 7

Be it known that we, LOUIS PFINGST, residing at Boston, in the county of Suffolk, and SUMNER A. BEMIS, residing at Springfield, in the county of Hampden, and State of Massachusetts, both citizens of the United States, have invented new and useful Improvements in Trucks for Railway-Oars, of which the following is a specification.

- This invention relates to improvements in trucks for railway-cars, the same being especially designed for street-railway, electric, and cable cars; and the object is to improve the I construction of the truck, whereby the carbody may be more readily placed upon and in the proper connection with the truck or re moved therefrom for the substitution on the truck of another car-body, or for other purpose.

The invention essentiallyem bodies the combination, with the beam or sill of the car-body, of a sill-bearing plate, one of said parts having a socket and the other a boss or projection to fit the socket, and the said sill-bearing plate being horizontally spring-supported by and above the truck.

The nature and composition of the invention will be rendered entirely clear on reference to the accompanying drawings, in which Figure 1 is a side elevation and partial section of a part of the truck, showing the sill of the car-body supported thereon and the novel devices of this invention applied between the truck and sill. Fig. 2 is a side view of a part of the sill with the pending cup-shaped projections thereon,and Fig. 3 is a cross-sectional view of the sill and its pending projection and of the spring-supported sill-bearing plate. Fig. 4 is a perspective View of a modification to be hereinafter referred to.

The sill-bearing plate A is a fixture of the truck, having only a removable engagement with the sill O of the car-body instead of a permanent engagement therewith, as heretofore has been common.

The sill-bearing plate consists of a longitudinally-extended narrow horizontal casting adapted by its upper side to lie along and under the sill; but it is provided with the sockets a ck, extended downwardly from its upper side, the said sockets being surrounded by a circular wall, which is projected below the under face of the bearing-plate, and each of the said socket-forming walls at its lower portion has the horizontal bearing web or wall b, and the circular surrounding flange dextended therebelow. Said portions 1) d form inverted cups for the reception of the upper ends of the vertically-mounted spiral springs f, which are supported attheir bottoms upon the forward and rearward extensions of the yoke A, which form part of the truck-frame.

The construction and design of the truck of which this sill-bearing plate now constitutes a part is illustrated and described in Letters Patent of the United States, granted to us March 31, 1891, No. 449,382, and therefore only incidental mention will be further made of the truck.

9 g represent inverted-cup-shaped bosses or projections, which are fixed on the under side of the sill of the car-body, each comprising the upper wall or web 10 and the hanging circular Wall open at its lower edge. These cup-shaped projections are secured to the sill by the bolts 12, the heads of which overlie the said web or Wall lO-adjacent the hole therein and through which the shank of the bolt passes, and the bolts receive the confining-nuts 13 on the extremities which are projected through the sill. The said cupshaped projections are arranged on the sill at suitable positions to fit into the sockets a a and the projections g, and socket-walls are drilled transversely for the reception of the bolt or locking-pin on. By preference the projections g g slightly taper downwardly, the sockets being correspondingly formed to receive same with a comparatively close fit.

The sill-bearin g plates are provided at suitable points in their length with the downwardly-extended bosses n n, vertically bored and socketed thereabove, the said sockets 0 being formed below the upper face of the plate. The upper ends of the vertical posts or rods Z l are passed through said bored bosses, as in the truck described in the aforementioned patent, and are held by nuts 14, which are seated in said sockets. These rods extend downwardly wit-h aloose bearin g through suitable holes therefor in the truck-frame and axle-box steps (not here shown) and receive the connection therewith of the horizontal tie and brace 13 at their lower ends, said tie-brace acting as a limit to the upward movement of the sill-bearin g plate, especially when the car-body is only lightly loaded or is removed from the truck. The sill-bearing plate at its extremity is also formed with a depression or socket q, sunk belowits upper face for the reception of the head of the bolt r, which connects the tie bar or rod tthat is understood as connected to and transversely extended from the sill-plate at one side of the car to that at the other.

It will be seen from the foregoing that the sill has merely the downward projections g g, requiring a single bolt for the connection therewith of each, and that the sill-plate, while adapted for the connection therewith of the several parts for adapting or rendering the sill-plate as a part of the truck, presents a flush upper surface for bearing upon the under side of the car-sill. The removal of the car-body merely requires the withdrawal of the bolts m and the lifting of the body from the sill-bearing plate. The sill has along its length beyond the sill-bearing plate a hanger u, and the yoke or truck-frame has secured upon its outerend and extended longitudinally therefrom a plate or leaf-spring 'v, the outer end of which has a connection with the lower extremity of the hanger. The form of spring here shown, as in said connection, is what is known as a quarter-elliptic spring, and is held in place at its inner end by the clamping-block to, which is bolted onto the truck-frame, the spring extending outwardly with an upward curve from said place of connection with the truck-frame, and is subject to compression and reaction upon the application of a downward stress thereupon. The lower end of the hanger is inwardly turned and one end of a short link x is secured thereto by a pivot-bolt, the other end of the link being connected by another pivot-bolt to the outer end of the quarterelliptic spring. The spring has sufficient stiffness to check the fore-and-aft rocking or tilting movement of the car-body upon the truck when the car is but lightly loaded, the said spring not interfering with the springing motions of the car, which are regarded as desirable.

In Fig. 4 the spring is shown as having substantially the same application on and extension from the truck as seen in Fig. 1, but its outer end being somewhat further upwardly extended, however, and in lieu of being linked to the hanger has a free sliding bearing upon the wear-plate, which is bolted upon the under side of the car-sill. The said plate preferably has the separated longitudinal ribs, between which the extremity of the spring bears, and by which the spring is held against distortion.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is l 1. The combination, with a beam or sill of the car-body, of a sill-bearing plate, one of said parts having a socket and the other a boss or projection to fit the socket, the said sill-bearing plate being horizontally springsupported by and above the truck, substantially as described.

2. The combination, with a beam or sill of the car-body, of a sill-bearing plate, one of said parts having a socket and the other a boss or projection to fit the socket, and a bolt passed transversely through the walls of said socket and through the said boss, the said sill-bearing plate being supported by and above the truck and connected thereto, substantially as described.

3. The combination, with the sill of the carbody, having projections downwardly extended from its under side, which consist of inverted-cup-formed castings, with bolts engaging and passed upwardly through their top walls and through the sill, of a sill-bearing plate supported on the truck and having the socketed bosses extending below its thickness and having the sockets which are therein open to the upper side of the said plate, substantially as described.

4. The combination, with the sill of the carbody, having the downwardly-extended projections, of the truck-frame having the vertical supporting-springs, and the sill-bearing plate having the socketed bosses extending below its thickness and having the sockets which are therein open to the upper side of said plate and said bosses having at their lower portions the seats for said springs, substantially as described.

5. The combination,with the car-body having the downwardly-extended projections, of the truck and the sill-bearing plate springsupported above the truck and having sockets for the reception of said pending sill projections, and said plate also provided with the socket q, sunk within its upper side, and the transverse tie-bar t and the bolt that unites the same with the sill-plate, having its head set in said socket q, substantially as described.

6. The combination,with the sills of the carbody,havingthedownwardly-extendedbosses, of sill-bearing plates spring-supported above the truck and having the sockets for the reception of the said bosses, and a cross-tie bar for uniting the sill-bearing plates at the opposite sides of the truck, substantially as described.

LOUIS PFINGST. SUMNER A. BEMIS. Vitnesses to signature of Louis Pfingst:

O. M. SHAW, IRVING H. FAY. lVitnesses to signature of SumncrA. Bemis:

WM. S. BELLows, H. A. CHAPIN.

Images