USRE9058E - Automatic cylinder-cock - Google Patents

Description

G. F. HAMMER. Automatic Cylinder-Cook.A

No. 9,058. lReissued Jan.'27,18so..

invento i UNITED STATES PATENT OFFICE.

GUSTAV F. HAMMER, OF GINOINXATI, Olllt).

AUTOMATIC CYLINDER-COCK.

SPECIFICATION forming part of Ressued Letters Patent No. 9,058, dated January 27, 1SEO. Original No. 100,650, dated May 15, 1877. Application for Reissue filed Xoveniherl, 1379.

`To all zrhontt muy concern Be it known that I, GUSTAV F. HAMMER, ot' Cincinnati, IIainilton county, Ohio, have invented certain new and useful Improve! ments in Automatic Cylinder-Cocks, ot' which the following is a specification.

This invention relates to that class of devices which arc employed for draining enginecylinders by lneans of a pair of reciprocating valves automatically operated by means ot' the live steam in such a manner as to discharge the water ot' condensation from the exhaust end ot' the'cylinder, while at the same time any waste of steam is prevented at the receiving end of said cylinder.

Ilcretoore such devices have consisted, essentially, ot' a barrel or shell communicating with both ends of the cylinder by suitable pipes, the reciprocating valves heilig housed within said barrel and rigidly united to each other with a stem or rod, in order that the closure of one valve consequent upon the pressure of steam against the same would open the other valve, and thus secure the drainage ot' the exhaust end ot' the cylinder..

This defective construction rendered it impossible to adjustthe cock to the requirements of various kinds ot' steam-cngines-or, in other words, a sufiicient stroke of'these connected valves to insure complete drainage of a large cylinder would afford too great an area ot' discharge for a small engine, and vice versa.

In order to overcome these objections, I sccure the stem or rod only to one valve and in7 sert it in a suitable bore or channel made longitudinally ofthe other valve, the penetration of said stem being regulated by an adjustable screw or stop tapped into the outer endet' said channeled valve, as hereinafter more fully described.

In the annexed drawings, Figure l is an axial section otl my improved cylinder-cock, the controlling-hainlle being set so as to allow free play ot' the loosely-conpled reciprocating valves. Fig. 2 is a similar section, but showing said handle turned so as to force both of the valves away from their respective seats. Fig. 3 is a vertical section of the valves rcmoved from the shell or barrel and separated from eachother. Fig. I is a transverse section of the channeled valve.

is another neck, J, to which is screwed Diagrams 5 and G represent the two different positions of the bit at the lower end of the controlling-handle.

A represents a shell or barrel, which is prctcrably cylindrical, and is provided with two perforated partitions or heads, I3 B', whose outer surfaces are counterborcd, so as to serve, respectively, as seats for the loosely-coupled valves O C. These valves are furnished with longitudinal wings or ribs that centralize said valves in their seats I3 B', and also afiord channels for the escape ot' condensed steam, &c., as clearly shown in Fig. LL. Of these valves, the one, C, is pierced from end to end with an axial bore or channel, l), into whose outer end is tapped an adjustable screw or plug or other stop, E, as seen in Fig. 3. Adapted to slide freely in this longitudinal bore is an axial stem or rod, F,y cast with or otherwise secured to alve C. Screwed to the ends of barrel A are couplings G Gr', having female threads g g for engagement ot pipes lI II', that communicate with the ends of the steam-cylinder to which the cock is applied. The under side of this barrel has a neck, I, to

` which is screwed the pipe that conducts the water ot' condensation away from the engine. Projecting from the upper side of said barrel a Cap, K, the latter being surmounted with a stutt- 1 ing-box, L. Occupying an axial position within these members J l L ot' the cock is a stein, M, having a handle, N, at top and a tlat bit, O, at its lower or concealed end.

My cylinder-cock is adapted for use and op crates in the following lnann'er: Previous to starting the engine, handle N is turned so as to dispose bit O longitudinally ot` barrel A, as

seen in Fig. 2 and Diagram ti. rIhis act withdraws stein F a sutlicient distance out ot' channel Dto compel valves O L" to recede from each other far enough to uncover the perforations of heads 15 Bf, in order that both ends of the steam-cylinder may now be drained through pipes Il II' and neck I; As. soon,

however, as the cylinder becomes heated upy handle N is turned so as to dispose'the bit t) transversely ot' barrel A, as seen in Fig. 1. and Diagram 5,-t'hercby leaving the valves C C at liberty to act automatically.

To illustrate this automatic action of the IOO i 1 in head B.

cook-,I willsupposethcpressure of live-steam in the engine-cylinder is brought `to bear against the outer end of valve C, so as to force the latter up snugly' against its seat B. Evidently this seating of said valve ct'eclnally prevents any escape of live steam through the cock, while at the saine time the motion communicated vto valve C is, by means of plug` E and stem F, transferred to the other valve, C', and consequently thelatter is forced away from its seatl-l'. New, as this valve C' is in communication with pipe IIleading tothe exhaust end of the cylinder, it is apparent the water ot' condensation will be forced through the ori- 'ce in seat B', and then escape at waste-pipe I. At thenext stroke of theengine this action of the device is exactly reversed-that is to say, valve C is forced to its seat by the livesteam, while valve C is opened by the thrust of stem F against stop E, andthe water of condensation now escapes through theorilice V The above-described reciprocating movements of the two loosely-coupled valves are automatically repeated at every stroke of the piston, and the result istheeomplete drainage ot' the cylinder without requiring any attention ofthe engineer. In case the cock is applied to a large cylin- 3o'der which condenses an unusual amount of steam, plug is screwed into bore I), so as to effect a greater separation of valves (l C', and therefore said valves'will be shifted farther from their respective seats at each stroke of the engine, and thus afford an ample area for the escape of water; but for application to smaller cylinders, plngE is adjusted outwardly to allow stem F entering bore I) a greater distance, which adjustment causes valves C C' to approach each other, and consequently said valves will be removed from their seats but a very slight distance at every stroke of the piston.

` ABy thus adjusting'these valves to the specific requirements of each engine I ellectnally preclaims arelimited to the devices D EF, or their equivalents, whereby the valves U G' are loosely Ycoupled together, and are capable of being adjusted so as to render such cocks applicable to engines of any capacity.

Having described my invention, what I claim isl. In an automatic cylinder-cock, a pair of loosely-coupled reciprocating valves, in combination with corresponding seats and suitable means of discharge, substantially as described.

2. In an automatic cylinder-cock, a pair of adjustable andl loosely-coupled reciprocating valves, as C C', when combined with rigidlyvconnected seats B B', and acentral dischargeopening, I, substantially as herein described,

' and for the purpose set forth.

3. In combination with barrel A and seats B B ot'an automatic cylinder-cock, apairof adjustable and loosely-coupled reciprocating valves, substantially a-sihereiu described, and for the purpose set forth.

4. An automatic cylinder-cock consisting, essentially, of barrel A, seats B B', and reci procating valves C C', one of said valves being -fnrnished'with an adjustable stop, E, and a longitudinal bore, D, which. bore is traversed by the stem F of the other vvalve,substantially as herein described, and for the purpose set forth.

In testimony whereof I have hereunto set my hand.

' GUSIAV F. HAMMER. Witnesses COLLIN FORD, r., EDGAR J. Guess;

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