US103840A - Henry broomell - Google Patents

Description

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HENRT BROOMELL, CHRISTIANA, PENNSYLVANIA.

Letters Patent No. 103,840, dated .Tune 7, 1870.'

VALVE MECHANISM FOR OSCILLATING- ENG-INES.

The .''n'zhedule4 referred to in these Letters Patent and making partof the same..

To all whom it may concern:

Be it known that I, HENRY BnooMELL, of Christana, in the county of Lancaster and State of Pennsylvania, have invented a new and useful Improvement in Oscillating Engines; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the acdompanying vdrawing forming part of this specification.

This invention relates to a new and useful Iimprovement in the class of steam engines known as oscillating engines, and consists in thccombination of a hand-valve of peculiar construction with the engine, as will be hereinafter more'ully described.

In the accompanying drawing- Figure l represents a sectional side elevation of' the engine v Figure 2 is a sectional top o r plan view;

Figure 3 is a side elevation of thev hollow stand; and

- Figure 4 is an inner face view of the valve. Similar letters of reference indicate corresponding parts.

A is the oscillating cylinder, which is supported on trnnnions on the stands B C.

The trunnion on the stand C is hollow, and conveys steam to the ends of the cylinder, through two ports in its under side, as shown in dotted lines in iig. 1. The stand C is also hollow, with three ports through the bearing or box of the.' trnnnion, the two outside ports being induction-ports, and the middle one an exhaust-port when the engine is running in one direction, and the middle port an induction-port, and -the outside ones exhaust-ports when the motion is reversed.

The ports' in the tru-union are so formed orharranged that, as the cylinder oscillates, they are caused to communicate '.with the center exhaust-port and with one of side ports, alternately, in the stand C.

D is the steam-chest, which is placed on the side of the stand C, to which it is fastened.

Communicating with the steam-chest and with the three ports in the bearing, referred to above, are two openings aa in the side of the stand. The upperl one, a, opens into the middle port, and the lower one into the outside or induction-ports.

. Between these openings in the stand is a third,

opening, b, which passes directly through the stand. This latter opening is central with the steam-chest, from whence the steam. is discharged.

NVithin the steam-chest is a rotating-hand-valve, E.

F is the rod, and

Gis the lever, by which this valve is operated. This valve serves two purposes; that of starting the engine and stopping it,V and also for reversing the motion of the engine. By turing this valve so that the lever stands horizontally tothe right, the apen ture H in the valve registers with the lower aperture a in the stand, thus admitting steam to the cylinder through one of the induction-ports.

F is agcavity in the same side 'or fa'ce of the valve E, which allows the exhaust steam to pass from the aperture a to b, and thus escape on the opposite side ofthe stand C.

This cavity F will always cover the aperture a and b of the stand when the aperture H in the valve registers with the lowest aperture a'.

When the lever is turned to the left the aperture H registers with the upper aperture a, the cavity If` will then cover a and l), and the engine will be reversed.

By turning the valve so that the level' stands in an upright position, these communications are cut o and the engine is stopped.

By moving this valve, by means of the lever, the engine is started to run in either direction, or brought topa state of rest, at the will of the attendant. l v

Upon the back of the valve E, and playing loosely on the valve-rod F', is a quadrant-shaped governor or cut-ofi' valve, I, with cogs on its outer side or back, which works over the orifice H in the valve E, to cut oti' or let on the steam according to the speed of the engine.

This governor-valve is operated by means of the pinion J, on the spindle or shaft K.

. On the outer end of the shaft K is an arm, L,A lwhich is connected by'a rod with'the governor.

When the engineis not,in motion the opening H is under the governor-valve.

In starting the engine, the valve E is turned to the right or left, so as to canse the aperture H to register' with the apertures a or a of the stand, and

thus start the engine forward or reversely, while the operation ,of the governor-valve regulates the motion at any speed.

`On the face ofthe valve E the opening H is en largcd, or -a cavity' is formed around it, extending in each direction, as at a, so as to communicate with the induction-ports ofthe cylinder, whether the valve be turned a greater or lesser distancefrom under the governor-valve.

M is the pipe which connects the steannchest with the boiler.

By this arrangement, it will be seen thatthc engine is under perfect control atall times.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent- In combination with an oscillating steam-engine, the hand-valve E, by means of which the engine is started and stopped, and its motion reversed, substantially as described.`

HENRY BROOMELL.

Witnesses JOHN-F. Lenen,

BRINTON WALTER.

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