US572579A - spaulding- - Google Patents

Description

(VNo Model.) Sheets-She-et 2.

EQ P.. SPAULDING. VALVE FOR STEAM ENGINES.

No. 572,579; Y Patented Dec. 8, 1896.

(No Modei.) 3 sheets-sheet 3. 'E'. 1:'.A SPULDING. VALVE' FR. STEAM ENGINES.

Patented Deo. 8, 1896.

A l/vvmro n ATTORNEY.

TH: nofws Urns no., maro-uma. wASmNmon, u, c.

UNITED STATES PATENT OFFICE.

ELIJAH F. SPAULDING, OF BOUND BROOK, NEW JERSEY, ASSIGNOR TO THE AMERICAN ENGINE COMPANY, OF SAME PLACE.

VALVE FOR STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 572,579, dated December 8, 1896. Application iiled April 10,1896. Serial No. 586,924. (No model.)

To all whom t may concern: constituting the slide-valve, have their longi- Be it known that I, ELIJAH F. SPAULDING, tudinal reciprocating movement. The heads a citizen of the United States, and a resident E, constituting the slide-valve, are connected of Bound Brook, in the county of Somerset together by the rods F and aremounted upon 5 5 5 and State of New Jersey, have invented certhe valve-rod G, the longitudinal motion of tain new and useful Improvements in Valves which is imparted to the slide-valve and the for Steam-Engines, of which the following is a axial motion of which operates the cut-off specification. valves to have their transverse reciprocation.

The invention relates to improvements in The heads E E, constituting the slide-valve, 6o ro valves for steam-engines, and pertains parmove together and correspond with one anticularlyto valves located within the steamother, and hence in Figs. 2 to 5, inclusive, but chest. one of said heads is illustrated.

In accordance with my invention I provide Each head E is formed of the three sides a 'within the steam-chest a slide-valve which b c, the sides a c being at substantially right 15 has a uniform longitudinalrreciprocation,and angles to the longitudinal line of the cylin` within this valve is located an inner or cutder A and the side b being parallel with said off valve which has no independent longitucylinder. The outer surface of the side b is dinal reciprocation, but simply at the proper provided adjacent to the sides a c with the timea vertical reciprocation, the exact time shoulders cl e,- between which said side b is 7o 2o at which this cut-od valve is to actbeing vaformed with the openings f and ribs g, the riable and under the control of the governsaid openings and ribs being more clearly ing devices. illustrated in Fig. 5. The purpose of the The form land construction of both the openings f through the sideb is to permit, at slide-valve and the cut-off valve are new and the proper time, steam to ent-er the cylinder 7 5 2 5 constitute the present invention, as herein- A through the usual ports 7L at the ends after described and particularly pointed out thereof. in the claims. Between the sides a c of the heads E and The invention will be more fully underarranged in face-contact with the. outer surstood from the detailed description hereinafface of the side b of said heads are placed 8o 3o ter presented, reference being had to the acthe cut-off valves H, the form and construccompanying drawings, in wl1ich tion of which are clearly illustrated in Figs. Figure l is a side elevation of the valve- 3, et, and 5, in which it will be seen that each 'chest of a steam-engine containing the slide cut-off valve H is composed of the three sides and cut-off valves constructed in accordance m a 0, the sides -m n being connected by the 85 3 5 with and embodying the invention, the outer ribs q, and the side o being provided with the face of the valve-chest being removed to eX- series of lslots or openings r, which, when the pose, the valves located withinthe said chest. cut-off valve is in position in the head E, may Fig. 2 is an enlarged horizontal longitudinal be brought into alinement .with the openings section of one end of the valve-chest and the f in said head for the purpose of permitting 9o 4o valves therein on the dotted line 2 2 of Fig. a clear passage of the steam through the cut- 5. Fig. 3 is an enlarged detached face view off valve and said openings f to the port h of the outer side of the cut-off valve removed and cylinder A. At the longitudinal center from the valve-chest. Fig. 4 is a vertical of the cut-off valve H are the partitions t, section of same on the dotted line 4. 4 of Fig. between which are placed the outer end of 95 45 3, and Fig. 5 is an enlarged vertical transthe sleeve s and the sleeves w w, which 1at verse section on the dotted lino 5 5 of Fig. 2. ter sleeves are mounted upon the ends of a In the drawings, A designates the stea1npin passing through said sleeve s, as` illuscylinder, B the customary pistontherein,a11d trated more clearly in Figs. 2 and 5. The O the valve-chest. At opposite ends of the sleeve ,s is integral with and constitutes in roo 5o valve-chest O are formed the chambers D, effectan arm projecting inwardfrom the split within which the corresponding headsE E, sleeve which is mounted upon the valverod G between the 'sides a c of the head E, being there secured by the bolt y passing through thel ears I J, which are integral with the opposite parts ot said sleeve Qc. The sleeve a; by means ol the ears I J vand bolt y may be adjustably secured upon the valverod G, and the purpose of said sleeve with its parts engaging the partitionst t of the cutoff valve H, is to enable the rod Gwhen having an axial motion to impart to the cut-off valve H a Vertical reciprocating motion against the outer face of the side l) of the head E.

The purpose of imparting the vertical reciprocating motion to the cut-off valve H may be fully understood when reference is made to Fig. 5, in which it will be seen that the cut-off valve H is in its lower position and that the openings 1 thereof are in alinement with the openingsf in the said side b of the head E. Then the cut-off valve is in the position shown in Fig. 5, the steam which enters the valve-chest through the opening L may pass directly through the openings r f in the cut-off valve H and head E. The axial movement of the valve-rod G will cause the cut-off valve H to ascend and at the proper time the solid portions of its side o will cover the openingsfin the head E and cut off the steam from passing through said openings f to the cylinder A. The valve H while moving with the head E is adapted to have a vertical reciprocating motion for the purpose of opening or closing the openings j'. Then the openings f are permitted to be open, the steam may pass through them, and when said openings are closed by the valve H the steam will be cut off from the cylinder. The valve-rod G has a uniform reciprocating motion and imparts this motion to the heads E, and at the same time the said valve-rod G has a variableaxial motion for the purpose of cutting off the steam from the cylinder A by :means of the cut-off valves H at the proper time and under the influence of the governing devices.

Then the head E at the left on the valverod G is in position to admit steam through the port h to the cylinder A, the head E at the right hand on said valve-rod will be removed from its port 7L, and at such time the steam at the right-hand end of the cylinder may exhaust into the outer end of the chainberD at the right-hand end of the valve-chest, which chamber connects with the usual exhaust H, and when the head E at the righthand end of the valve-rod has its ports j' uncovered and in position to admit steam through the port 7ly at the right-hand end of the cylinder A the head E at the left hand will be removed from the port h at the lefthand end of the cylinder A, and at such time the steam at the left-hand end of the cylinder Amay exhaust into the outer end of the chamber D at the left-hand end of the valve-chest, which, as customary, is connected with the usual exhaust. The live steam completely fills the valve-chest between the heads E E of the slide-valve and enters between the sides a c of said heads, and hence, whenever the openings j' of the heads E are uncovered and in line with the ports h at the ends of the cylinder A the live steam will pass directly into the cylinder. The heads E are provided with the packing-strips M, which prevent the live steam from passing around said heads to the exhaust.

Upon reference to Fig. 5 it will be seen that the upper half of the head E at the left-hand portion of the valve-chest contains in its side l) one more openin g or port f than the lower half of said head. The head E at the righthand end of the valve-rod G will contain in its lower half one more opening f than in its upper half, and hence it is that both of the cut-off valves H may be operated from the one valve-rod G. When the cut-off valve H at the left-hand end of the valve-chest is in its lower position, as shown in Fig. 5, admitting steam through the openings or ports r f 9o to the port h,'leading into the left-hand end of the cylinder A, the cut-off valve H at the right-hand portion of the valve-chest will be in its upper position, closing the ports f in the right-hand head E. Thus it will be understood that when one cut-off valveH is descending to open the ports f in line with it the other cut-off valve H will be closing the ports f in its head. The cut-off valves H do not, preferably, have a sudden movement, but have a gradual vertical reciprocation during the longitudinal reciprocation of the heads E.

As above described, the action of the cutoff valves H is variable in order that the steam may be cut off from the cylinder A at the desired moment under the control of the governing devices.

The valve-rod G may bey connected with the heads E, so as to reciprocate the same, by any suitable means, and in the present instance the sleeve .fr 011 said valve-rod iitting between the sides a c of said heads enables the valve-rod to effect the longitudinal reciprocating movement of said heads. The means of connection between the heads E and valve-rod G must also be such'as to enable said rod to have an axial movement in order that it may at the proper time, regulated by the governing apparatus, move the cut-off valves H to open and close the ports to the cylinder. The valve-gear for operating the slide-valve (composed of the heads E E) and cut-oft valves H will be of any suitable character, and as disclosing an example of satisfactory gear for this purpose attention is called to Letters Patent of the United States No. 385,533, granted to me on July 3, 1888. The present invention is not confined, however, to any special form or construction of valve-gear.

As above described, the heads E E, composing the slide-valve, have a simultaneous and uniform lon gitudinal reciprocation, while the cut-off valves H have simply, with re- ICO IIO

spect to their seats and cooperating ports, a vertical reciprocation. rocation of the cut-oft valve H is variable as to time of action under ,the control of the governing devices, while the traverse of the heads EE, composing the slide-valve, is invariable.

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

l. In a steam-engine, the valve-chest having the chambers at its opposite extreme ends connected with the exhaust, and the reciprocating slide-valve in said chest and composed of the connected heads each comprising the sides ci, c, b, the latter having the series of openin gs f, and the former the packingstrips M, combined with the cut-oit valves having the openings r and arranged in contact with said side b between the sides d, c, and adapted to have a transverse reciprocation, while said heads have a longitudinal reciprocation, and the valve-rod connected with said heads and said cut-off valves; substantially as set forth.

2. In a steam-engine, the valve-chest having the chambers at its opposite extreme ends connected with the exhaust and having also the central inlet for steam, the reciprocating slide-valve in said chest and composed of the heads E, E, located within the chambers at the opposite ends of said chest and each Comprising the sides a, b, and the side c having the openings f, the rods F connecting said heads, and the packing-strips M in said sides a, combined with the cut off valves having the openings fr and arranged in contact with said side b between the sides a, c, and adapted to have a transverse reciprocation, while said heads have a longitudinal reciprocation, and the valve-rod connected Y with said heads and said cut-oit valves; substantially as set forth.

. 3. In a steam-engine, the valve-chest having the chambers at its opposite extreme ends connected with the exhaust and having also the central inlet for steam, and the connected heads E, E, located in said chambers and leaving the space between them entirely7 open for live steam, said heads being provided with packing at their outer edges to prevent the live steam from reaching the exhaust, and with the series of ports adapted to communicate with the usual ports leading to the cylinder, and said heads being of a size to oom-l The vertical recip pletely close said chambers in a transverse direction, combined with the cut-ott valves having a transverse reciprocation and provided with ports which may be moved into alinement with or out of alinement from the ports in the said heads constituting the slidevalve, and the reciprocating valve-rod connected with said slide and cut-off valves and adapted to turn axially and thereby operate the latter; substantially as set forth.

4. In a steam-engine, the steam-chest having the chambers at its extreme ends connected with the exhaust and having also the central opening for steam, and the reciproeating slide-valve in said chest and composed of the connected heads each comprising the sides a, c, b, the latter having the series of openings f and the former extending entirely across between all the adjacent walls of said chest to cut oii the live steam from the exhaust, while the sides c permit the live steam filling all the central part of the steam-chest to pass outward beyond them, combined with the cut-off valves having the openings r and arranged in contactwith said side b between the sides a., c, and adapted to have a transverse reciprocation, while said heads have a longitudinal reciprocation, and the valve-rod connected with said heads and said cut-off valves; substantially as set forth.

5. In a steam-engine,the reciprocating slidevalve composed of the heads E, E, each comprising the sides d, c, b, the latter having the series of openings f, combined with the cutoff valves H having the ports or openings r and arranged against said side b, the reciprocating valve-rod G connected with said heads E, the sleeves secured upon the said valve-rod between said sides a, c, and the sleeves .s integral with said sleeves and carrying the pins and sleeves w, said sleeves s, s, w, being seated in said slide-valves, and said valve-rod being adapted to reciprocate said slide-valve and also to impart a transverse reciprocating motion to said cut-off valves; substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 6th day of April, A. D. 1896.

ELIJ AH F. SPAULDING.

IVitnesses:

CHAs. C. GILL, E. Jos. BELKNAP.

ICO

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