US60638A - Improvement in botaky steam valves - Google Patents

Description

vinlf tutes atrnt @fge i IMPROVEMENT IN ROTARY STEAM VALVES.

lge tlg'e'tulr refertet tu in tlges lcltets ntellt mit mztkiirg :grat si .tlge same.

To ALL WnoM 1T inuzcoucnmv:

Be vit known thnt.I, .Luiss L. MACKEY, of Seymour, in the county of Jacksomand State of Indiana, have` invented a new and useful Improvement in Steam Valves; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in which- Figure 1 represents a transverse section of this invention as applicable to a single cylinder, the plane of i section being indicated by the line z z, iig. 2.

Figure 2 is a. longitudinal central section ofthe same taken in the plane indicated by the line yy, iig. 3.

Figure 3 is a transverse section of the valve, showing its application to a steam cylinder.

Figure 4 is asimilar section of my valvewhen the'salneis adapted to a'double cylinder Woolf` engine.

Figure 5 is a longitudinal cenl'tralnsection of the same, the line z 1:', iig. 4, indicating the plane of section.

Figure 6 'is a transverse sectiohof the same, the'plane ot' section being indicated by the line z e, iig. 5.

Figure 7 is a transverse section of a modification of my valve whenupplied to a double-cylinder engine.

Figure 8 is a longitudinal central section of the saine, the line y y, iig. 7, indicating the plane of section.

Figure 9 is a transverse section of the same, taken in the plane indicated byi` the line z' z', g. 8.

Siniilhlettrs ofrei'erence indicate corresponding` parts.

This invention relates to a balance conical valve which is applicable to a single or double-cylinder engine, and which is composed of a hollbw movable plug working in a sleeve which is tted into a suitable shell, that is cast solid with or otherwise rigidly attached to the steam cylinder, the plug valve, the sleeve, and the shell being provided'with suitable steam exhaust ports in such a manner thatby giving to the plug valve-an oscillating motion,tlie steam is alternately admitted to either end of the cylinder and the desired reciprocating motion is imparted tothe piston.

In its simplest form, when made .for a single-cylinder engine, my valve consists of a hollow conical plug, A,

with al V- shaped partition, B, and with live ports, a a b c d. This plug is closed at both ends and ground airtight. A sleeve, C, which is provided with four apertures, ecf f, and with a cap, g, through which aset-screw may be introduced, such as shown in fig. 8, to k'eep the plug in its seat. V The sleeve, C, is tted into. the shell, D, which is cast solid with or otherwise, rigidly attached to the steam cylinder, E. From this shell extend channels, h L, to the opposite ends ot' the cylinder, aud it is provided with two other apertures, it", one of i which communicates with the steam supply and the other with the exhaust pipe. The sleeve, C, is sc adjusted in the shell, D, that the apertures, h h', correspond with the' apertures, f f, as shown in iig. 3, and the apertures, z', with the apertures, e e', as shown in gs. 1 and 2, and the .plug A extends through the thin end of the sleeve and shell, and in practice it must be provided with a lever by means ofwhich it can be turned so as to bring the aperture, b, alternately to coincide with the apertures f h, in the sleeve and shell, and then with the aperturesf h. At the same time the apertures c d, in the plug, .cover the apertures e z' e z", in the sleeve and shell, (see figs. 1 and 2,) and said apertures c d are made oblong so that the plug can'bo oscillated without covering either of said apertures. If the aperture, b, in the plug coincides with the channel, It, (seeig. 3,) the aperture, a', coincides with the.channel,h, and steam enters the cylinder and exhausts therefrom, as indicated by the arrows in fig. 3. If the plug is turned so as to bring the aperture, 6, to coincide with the channel, h', the aperture, a, coincides with the channel, h, and the steam is reversed By admitting the steam under the V-shaped'partition, B, all unequal or one-sided strain on the plug is avoided, and said plug is made to operate easy under any pressure; and furthermore, by introducing the sleeve, C, between the plug andthe shell,`the seat of the plug is made movable, so that it can be readily bored out and the valve fitted in, even if the shell, D, should be cast solid with the steam cylinder and if the plug requires to be reiitted the operation is-rendered comparatively easy. l l

' If my valve is to be applied. to a Woolf engine, with two cylinders of unequal diameters, the steam being rst introduced into the small cylinder, arid as it exhausts from the same into the large cylinder, it is constructed either in the manner shown in gs. 4, 5, and 6, or inthe manner shown in figs. 7, 8, and 9. In the valve shown in figs-4, 5, and 6,*thc plug A, V-shuped partition B, sleeve C, and shell D, are like the corresponding parts previously described, but the plug is provided with eight 'apertures,jj k l l k' c d, the apertures jj' lc, being on the concave, and the apertures Z 7c Z c on' the convex side of the V-shaped partition B. The apertures 7c communicate by a channel, m, which passes through the V-shaped partition B. The sleeve C and shell D are each provided with six apertures, fff f* ele', in the shell D, and L h t* z* in the shell. The apertures i e', connect with the'steam su'pplypipe, and the apertures e with the exhaust pipe, and the apertures c d n the plug are oblong to allow of imparting to said plug an oscillating motion, Without closing the communication with the steam and exhaust pipes. The apertures It h in the shell communicate with theop'positc ends of the small cylinder F, and the channels h* L*, with the ends ofthe large cylinder G. If the plug is turned so `that ths aperture j in the same coincides with the aperturesfh, inthe sleeve and shell, the aperture k will coincide `with the apertures f L', and the steam enters the small cylinder as shown in fig. 4. At the same time the .aperture ft coincides with the apertures f* It", and the aperture l' with the apertures f* 11", and the steam apertures jj 7c k l l c d, substantially as and for the purpose set forth.

lexhausting from the small cylinder passes through the channels m and h"*, and apertures f* l', asindicated by arrows in fig. 4. If the valve is turned so as to bring the channel k to coincide with the apertures f h, the steam is reversed. If' thc two cylinders F G, instead of being 4 placed side by side, as shown in fig. 4, are placed end 'to end, as shown in iig. 7, the arrangement of the valve is such as shown in figs. 7, 8, and 9. The channel m, instead of passing through the V-shaped partition, divaricates and straddles the same, and connects through channels h or h', with the opposite ends of the small cylinder F, and through channels h* or L*, with the opposite ends of the' large cylinder G. In the position in which the valve is shown in iig. 7, the steam enters the small cylinder through the channel h, and it exhausts from the same through the channels h m* m z*, into the vlarge cylinder from which it exhausts through the channel hfl, and through the valve into the exhaust channel d. It will be noticed 'that in all three cases which I have described, the steam enters my valve at the concave side of the partition B, and it exhaustsitherefrom at the convex side. The additional channels and openings shown in figs. 4 to 9, are necessitated only if the valve is to be used with two cylinders. The sleeve is provided with a cap, so that access can be had to the interior of the valves for the purpose of lubrication.

What I claim as new, and desire to secure by Letters Patent, is

1. The valve A, with a V-shaped partition and apertures c d a a' 6,*in combination with the sleeve C, l

and shell D, constructed and operating substantially as and for the purpose described.

2. The transverse channel m, in combination with the hollow plug-valve A, V-shaped partition B, and `with JAMES 'L MAoKEv.

Witnesses:

F. M. PArrEssoN, L. E.'Ii.1mmr.r..A

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