US94396A

US94396A - Charles- w

Info

Publication number: US94396A
Authority: US
Publication date: 1869-08-31
Anticipated expiration: 1886-08-31

Description

linited @States @aient @titille Leners Patent No. 94,396, daad August 31, 1869.

The Schedule referred to in these Letters Patent and making part of the same To all whom. if may concern:

Be it known that I, CHARLES W. CAHOON, of YPortland, in the'county of Cumberland, and State of Maine, have invented a new and useful Improvement in Locomotives; and I hereby declare the following to be a full, clear, and exact description thereof', which will enable others to make and use my invention, reference being had to the accompanying drawings, forming part of this speciiication, in which- Figure 1 is a top plan of the running-gear and engines.

Figure 2 is a side elevation of boiler and engines, and a sectional elevation of the running-gear.

My invention consists- First, in an improved device for facilitating the propulsion of cars, &c., and

Second, in anjmproved method of communicating motion to the driving-wheels.

In the operation of Streetcar locomotives, where steep grades are frequently encountered, it is of great import-ance that a large amount of tractive power should beV ready at' hand to be brought into use when needed, and for this purpose, I have attached to the locomotive an adjustable friction driving-Wheel.

It is also desirablein street-locomotives, and especially in the locomotive patcntedby me, November 5, 1867, that they may be capable of beingloperated with a low pressure of steam, and at the same time not haye inconveniently large engines, and also that the engines may be placed perpendioularly, or nearly so, at one end of the locomotive, when the crank-shait foroperating the driving-wheels is at the other end; and to obtain this result, I place a vibratable arm in the connecting-rod between the engine and the crankshaft'of the driving-wheels, so as to change the line of motion of the connecting-rod, and also to obtain leverage thereby.

The locomotive presented in the drawing is of that yclass patented by ine, November 5, 1867, and is intended to be operated without fire upon the same,

the water for making the steam being heated at a stationary boiler, and transferred therefrom to the locomotive.

A represents the hot-water tank.

B, the frame-work of the platform on which rests the tank, engines, 85o.

C is the crank-shaft which operates theernain driving-Wheels D D, and likewise the adjustable friction driving-wheels E E.

These wheels E are set in a vibratable frame, I", which is pivoted to the crank-shaft C.- They are .madeot vulcanized rubber, and are intended to act' 'upon the track between the rails, being operated by a gear-wheel, 1, attached to their shaft, and connecting with a gear-wheel, 2, on the crank-shaft.v

b' b' represent spurs in the periphery, which are held therein by a transverse rod, put through the side and vthrough the inner part of the spur, within the wheel.

These spurs may or may not be used, depending upon the weight of the locomotive and the load tobe haul'ed.

G is a screw passing through a loose nut in a crossbar in the bottom frame B, with the lower end jointed loosely in .the frame F. The upper end has a handle attached at a convenient height to be easily operated.

The wheels E E are brought into action by simply turning down the screw G until they come in contact with the ground. Turning it up, of course takes them out of action.'

H is the vihratable arm in the connecting-rod, and is pivoted to a cross-bar in the frame B, the connecting-rod, in its verticalaction, being attached to one side of this arm, at a, and in its horizontal action to the other side, at b, the side a being' the longest, sol as to produce leverage upon the driving-wheels.

3 is a gear-wheel on the shaft of the driving-wheels D D, and is connected with the gear-wheel 2 on the f crank-shaft.

e is the engine.

d, the valve-rod.

c, a tank in front of the engine, to receive the exhaust steam, and to let it oit' gradually, to prevent noise. l

f f, pipes for letting oii the condensed water from the engines, which pipes also lead into the tank c'.

g is a pipe to let oi" the condensed water. n

It is the exhaust-pipe.

,'a pipe to carry steam from the reservoir-tank to the engines.

j is a pipe to let oii' steam and air while iilling the reservoir with hot water from the stationary boiler.

k, the lling-pipe.

Z, the discharging-pipe.

The driving-wheels D I) are constructed with cushioned, or partly-elastic peripheries, in accordance with a prior application for patent by me. p

The brakes, when the wheels are thus constructed, may be made to operate upon the sides of the wheels, instead of upon their peripheries, as usual.V

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The adjustable friction driving-wheels connected -to the locomotive, as set forth, and capable of an intermittent or continuous operation,.as herein described.

2. The cylinder c'. bellcrank a, and connecting-rods with .crank-shaft C, driving-wheels D, and supplementary adjustable driving-wheels E E, when constructed and arranged as described.

CHARLES W. CAHOON. Witnesses:

WILLIAM H. CLIFFORD, HENRY C. HOUSTON.