US36352A - Improvement in engines for city railroads - Google Patents

Description

A. IRWIN, ENGINE FOR CITY RAILROADS.

No. 36,352. Patented Sept. 2, 1862.

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' N ITE STATES ALEXANDER IRWVIN, OF PITTSBURG, PENNSYLVANIA. I

iMPROVEMENT iN ENGINES FOR CITY RAILROADS.

Specification forming part of Letters Patent No. 36,352, dated September 2, 1862.

To all whom it may concern.-

Be it known that I, ALEXANDER IRWIN, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and Improved Steam-Gar for Street or City Railroads; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure I is a side sectional View of my invention, taken in the line :0 00, Fig. 2; Fig. 2, a sectional plan or top view of the same, taken in the line 00 to, Fig. 1; Fig. 3, a detached sectional view of one of the sprinklers pertaining to the same, taken in the line y y, Fig. 1.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to obtain a simple and compact steam-car for street or city railroadsone in which the engines and driving mechanism will be so arranged or disposed as to cause each wheel to be subjected to an equal weight and not at all interfere with the room or space designed for passengers.

To enable those skilled in the art to fully understand and construct my inventionfl will proceed'to describe it.

A represents a rectangular frame which composes the car-bed, and B represents the wheels on which the bed is mounted, said wheels being placed on axles G O, which are fitted in suitable boxes placed, as usual, in

- pedestals or pendants D, attached to the bed.

E is a frame composed of three bars, a b b, the latter two, I) I), being at right angles to the former. The bar a is parallel with the crossbar 0 at one end of the car-bed, and it has a pivot, d, attached, which is fitted loosely in a pendant, e, at the center of the bar 0. The front bars, b b, are fitted loosely on the axle 0, above mentioned, of the car-bed.

In the frame E there are placed two oscillating engines, F F, the piston-rods e e of which are connected to cranks ff onthe axle 0, said cranks being connected by rods g g-to similar cranks, h h, on the other axle, O, as shown clearly in Fig. 2.

G G represent two boilers of the upright form, which are fitted in the end of the carbed A opposite to that where the engines F F are connected. The engines receive the steam from their boilers in the usual way.

H H are two water-tanks, which are placed in the car bed A, one at each side and above the engines F F. These water-tanks are underneath the seats of the car and entirely out of the way of the passengers, not interfering with the space designed to be occupied by them. These tanks are divided into a number of compartments by transverse partitions 2', through which a valve-rod, I, passes. The rods I I are-provided withvalves J, so placed on them that there will be one at each side of each partition to admit as the rods I are operated the passage of water from one compartment to the other. The water-tanks H communicate by means of pipes j with a heater, K, which is placed centrally between the tanks H H, and into which the cylinders k 70 of the engines F exhaust, and the boilers G G are supplied with water from the heater K through the tubes Z l. The tanks H H, in consequence of being divided into compartments by the partitions i, prevent the water from running to one end when the car is moving on a grade and insure a uniform supply of water to the boilers. The compartments at the inner ends of the tanks H have each an inclined pendent tube, L, attached, which extend down by the treads of the wheels B and are provided at their lower ends with crosspipes m, which are perforated and admit of a jet of water passing upon the treads of the wheels to facilitate their passage over curves. The tubes L may be provided with valves arranged in' any proper way to admit of the escape of water through said tubes when desired.

It will be seen that all the wheels 13 of the car are drivers, and. that the engines, boilers, tanks, 850., are so disposed and arranged on the car that the weight will be equally distributed thereon, the whole forming a very compact steamcar, affording ample passengerroom.

I do not claim separately the oscillating engines nor the heater, for they are well-known devices; but

I do claim as new and desire to secure by Letters Patent 1. Ihe oscillating engines F F in a frame, E, suspended underneath the car-bed A, as

shown,'in combination with the heaterK, I of the tubes L, with perforated pipes m at their tanks H H, and boilers G G, all arranged and I lower. ends, when said tubes are connected and disposed in relation with the car-bed A to oparranged with the tanks H and the wheels B,

erate as and for the purpose herein set forth. a for the purpose herein set forth.

2. Constructing the tanks H with a series of compartments in connection with the valves J and rods I, arranged therein as shown, for \Vitnesses: the purpose specified.

3. The sprinklers or jet-dischargers formed ALEXR. IRXVIN.

D. W. MILLER, J NO. W. MILLER.

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