US449868A - Steam-actuated valve - Google Patents

Description

(No Model.)

J. E. BAKER. STBAMAGTUATED VALVE. y 4No. 449,868. Patented Apr.' 7, 1891.

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UNITED STATES PATENT OFFICE.

JAMES H. BAKER, OF SPRINGFIELD, ILLINOIS.

STEAM -ACTUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 449,868, dated April 7, 1891.

EApplication led August 6, 1890.

.To aZZ whom it may concern:

Be it known that I, JAMES H. BAKER,a citizen of the United States, residing at Springeld, in the county of Sangamon and State of Illinois, have invented a new and useful Improvement in Steam-Actuated Valves, of which the following is a specification.

My invention relates to improvements in steam force-pumps in which the engine and pump are combined into one machine.

The machine is illustrated by the accompanying drawings, in which- Figure l is a longitudinal section through pump and engine. Fig. 2 is a cross-section through the engine on line :n w. Fig. 3 is a horizontal section through the steam-'box of the engine. Fig. 4 is a Vertical section through the length of the auxiliary valve K. Fig. 5

is a cross-section through the pump, and Fig.

6 is a top View of one of the pump-Valves.

Similar letters refer to similar parts throughout the several drawings.

The pump is operated in the following manner: Steam from the boiler enters the valve A through the supply-tube B, and acting on the head of the piston in the usual Way carries it to the other end of the cylinder. rlhe pump-arm G is attached to the piston-rod H, and moving forward with H is carried against the tappet J or J just before the piston reaches the end of its stroke. The arm G moves easily on the valve-stem D but when G strikes the tappet J or J it carriesDalong till its movementis completed. D is attached to the auxiliary valve K, which in its movement with D uncovers the steam-hole a or a', through which live steam enters the cylinder of chest-piston C. O is thus thrown forward and carries with it the steam-valve A, for A is attached to C by the supply-tube B snugly fitting into an openingin O. A then supplies live steam to the piston-head. The steamring F lies on top of valve A and about the tube B and makes a steam-tight joint with A. The steam is exhausted from the other end of the chest-cylinder C by passing through a, c, and b or a', c', and b into the exhaustchamber L L. It will be noticed that C in its movement covers a ora entirely. The steam Serial No. 361,234. (No model.)

remaining in the exhaust end of the chestcylinder beyond o or a forms a cushion for C, and by its expansive force carries C back past the steam-hole a or a, when by the movemeut of the auxiliary valve K the steam at the other end of O is allowed to exhaust through the steam-holes a and b or o. and b',

which are periodically connected through the channel c or c in the auxiliary valve K. In case the engine is cold or the parts stick tightly and C fails to move past a or a, so that the steam from a or a may act on C, the arm E, attached to D and moving loosely in a slot in the side of O, strikes against the end of said slot and carries O with i'tto a point fully past ot or a, from which position the live steam carries it tothe end of the stroke and with it the steam-valve A. V The arm E is necessary only in such emergencies. In the return movement the action is the same, the reference-letters in the description being reversed. The arm G is clamped to H by two bolts, and by this means is easily adjusted in place and difficult to work loose. The tappets J and J are fastened by clamp-screws to D and are adjusted to the distance Kis required to move.

I am aware that prior to my invention steam force-pumps have been made with a chestpiston controlling the action of the steamvalve, the chest-piston itself being controlled by the movement of the piston-rod of the engine. I do not therefore claim such a combination, broadly; but

What I do claim, and desire to secure by Letters Patent, is-

l. The combination, in a steam force-pump, of the steam-valve A, having a tube B, steamring F, auxiliary valve K, chest-piston C, finger E, valve-stem D, and pump-arm G, substantially as shown and set forth.

2. The steam-ring F, in combination with steam-valve A and supply-tubev B, substantially as set forth.

JAMES H. BAKER.

In presence of- R. A. BULLARD, J. A. CHURCHILL. g

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