US142092A - Improvement in attachments for direct-acting steam-pumps - Google Patents

Description

0. T". E ARLE. Attachments for Direct-Anti ng Steam-Pumps. NO. 142,092. Patented August 26AM? IN VENTOR OSCAR T. EARLE, OF N ORWALK, CONNECTICUT.

IMPROVEMENT IN ATTACHMENTS FOR DIRECT-ACTING STEAM-PUMPS.

Specification forming part of Letters Patent No. 142,092, dated August 26, 1873; application filed March 3, 1873.

To all whom it may concern:

Be it known that I, OSCAR T. EARLE, of

Norwalk, in the county of Fairfield and State of Connecticut, have invented certain Improvements in Attachments for Direct-Actin g Steam-Pumps, of which the following is a specification:

My invention relates to anew and improved hand-power attachment, whichis designed sufficient steam-pressure, or other usual motor;

and it consists in making an opening through the back-head of thesteam or water cylinder of the pump, and in providing said head with a screw-cap, which may be detached at pleasure, or other suitable means of closing said aperture when desired 3 and, further, in providing said head with a detachable stuffingbox, which can be secured over the mouth of the aperture in the place of the screw-cap, when the hand-power attachment is in use, said attachment consisting of an auxiliary piston-rod, passing through the detachable stuffing-box and the aperture in the cylinder, being so constructed that one end may be readily attached to and detached from the back of the piston, and the other so as to be readily attached to and detached from a detachable lever secured to the head or other portion of the cylinder or pump, or to some other equivalent device for operating said rod by hand. r v

The closely-connected steam-pumps differ from the ordinary direct-acting steam-pumps in having no tappet-arms intervening between the steam and water cylinders, for the purpose of working the main valves, the said valves being operated directly by the piston in the steam-cylinder. This class of pumps possesses many advantages over the ordinary direct-acting steam-pumps, being lighter and occupying much less space, which renders such pumps, especially the larger sizes, particularly applicable to mining operations and for marine purposes, where engines occupying unnecessary room or of great weight are inconvenient. These advantages have been offset heretofore in a great. measure by the want of a proper hand-power attachment. No such attachment has ever been provided for such pumps heretofore, rendering them useless for pumping until there is a snfficient head of steam on in the boilers, and, in the absence of other common motors, sometimes employed. My invention is particularly designed to overcome this defect, and render such pumps more perfect in their appointments.

The drawing represents a longitudinal section of a closely-connected pump with my invention attached.

A represents the water-cylinder, and B the piston or plunger. C represents the steamcylinder, and D its piston. E represents the piston-rod, connecting the pump and engine pistons, and F the auxiliary piston-rod, which may be made to pass through the head of either the steam or water cylinder, and connected with either the steam-piston or pumpplunger. I prefer, however, to pass it through the steam-cylinder head and connect it with the steam-piston, as I have shown. The rod may be secured to the piston in any convenient manner that will admit of its being readily attached or detached, but I prefer the arrangement shown in the drawing, in which the rod is provided with a screw-thread at one end, by means of which it can be fastened in a few moments in a screw-socket on the piston, by simply giving it a few turns in the proper direction. The screw-socket G, shown in the drawing, serves two purposes, acting not only as a socket, but also as a jam-nut to secure the screw-nut H. I represents a detachable hand-lever, secured to the headof the cylinder or any other portion of the pump, and connected with the auxiliary piston in any convenient manner that will admit of its being readily attached or detached.

The lever may be attached to the cylinderhead by means of a link, J, to prevent the piston-rod from being pulled out of line by the lever; but the same end may be accomplished by a variety of well-known devices.

By attaching the lever to the cylinderhead taohable auxiliary piston-rod, passing through which I prefer to other portions of the pump, the head of the steam or water cylinder and it is evident that it may be set either horizonconnected to the piston of the same, substantally, perpendicularly, or at any desired antially as described.

gle, as may be found convenient, by simply OSCAR T. EARLE. turning the cylinder-head, the bolts and holes being properly arranged for this purpose. Witnesses:

What 1 claim is-- J. G. LATHROP,

The hand-lever I, in combination with the del R. H. WHITTLESEY.

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