US1002449A - Steam-engine. - Google Patents

Description

fuzz-El- L. S. PUTMAN.

STEAM ENGINE.

, 1221.101110]! 11,311 JULY 13, 1910.

COLUMBIA PLANDGRAPH 60., WASHINGTON. D. C.

Patentd Sept. 5,1911.

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L. S. PUTMAN.

STEAM meme,

APPLIOATION FILED JULY 13, 1910. 1 002 449. Patented Sept. 5, 1911.

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S I Ell-110M0 \ZOLUMBIA I'LANOGRAFII C0. WASHINGTON. D. c.

LEWIS S. PUTMAN, 0F STACY, TEXAS.

STEAM-ENGINE.

Specification of Letters Patent.

Patented Sept. 5, 1911.

Application filed July 13, 1910. Serial No. 571,794.

To all whom it may concern:

Be it known that I, LEwIs S. PUTMAN, a citizen of the United States, residing at Stacy, in the county of McCulloch, State of Texas, have invented certain new and useful Improvements in Steam-Engines; and I do hereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same.

The invent-ion relates to an improvement in steam engines and more particularly to the double cylinder type.

and are suitably connected to a common crank shaft, and improved valve means 10-" cated between the cylinders, for controlling the flow of steam to the cylinders.

With this and other objects in view the innying drawings disclosing the preferred. form of embodlment of the invention and.

particularly pointed out in the appended claims. It is to be understood, however, thatchanges, variations and modifications may be resorted to such as come properly within the scope of the appended claims without departing from the spirit of the invention.

In the drawings: Figure 1 is a top plan view embodying the invention. Fig. 2 is a transverse sectional view on line 3-3 of Fig. 1. Fig. 3 is a longitudinal sectional view through the steam chest. Fig. 4: is a detailed perspective view of one of the slide valves.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

In the drawings, the numeral 10 designates the base or bed plate of the steam en gine to the center of which is secured a pair of steam cylinders 11 and 12 having between the same a steam chest 13 the same being of the ordinary construction. At one end of the base or bed plate are secured bearings 15 in which is journaled a crank shaft- 16 the same having opposed cranks 18 and 19 the former having connect-ion with pitmen 20 which latter are pivotally connected to cross 3 heads 21 slidably mounted in guide ways 22 and carried by the cross heads 21 are piston rods 23 having the usual piston 24 working in the steam cylinder.

To the cranks 19 are connected pitmen 25 pivotally connected to cross heads 26 slidably mounted in guide-ways or blocks 27 and to the said cross heads 26 are rigidly connected rods 28 the latter working in guides 29 projecting a distance from the outer faces of the cylinders. To the ends of the rods 28 are fixed sliding blocks or return heads 30 WlllCll are slidably mounted in guide ways 31 arranged in alinement with the guide The primary object of the invention is the construction of a steamengine having parallel cylinders in which opposed pistons work ways 22 and on the opposite side of the cylinders with respect thereto. To the sliding :blocks or return heads 30 are connected pis- =ton rods 32 having pistons 33 working in the cylinders toward and from the pistons 24k therein.

The opposing sides of the cylinders 11 are provided with steam ports 34 and 35 which communicate with the interior of each cylinder at opposite ends thereof and with the interior of the steam chest at opposite ends thereof. Below the steam chest 13 and leading therefrom is an exhaust port or pipe 36 the latter having communication with the interior of said steam chest through out wardly diverging passages 37 the same terminating at a point centrally between the steam ports 34 and 35 and in alinement therewith. At a point centrally of each steam cylinder 11 is a steam port 38 leading therefrom to the steam chest opposite the communication of the steam ports 34: and 35 with the same and in alinement with the latter port.

On the crank shaft 16 are a pair of eccentrics 39 and 40 and which are connected and adapted to actuate valve rods 41 and a2 in opposite directions with respect to each other and which valve rods extend through one side wall of the steam chest for shifting the slide valves 43 and 4:41: fixed to the said valve rods respectively and working within the steam chest. The slide out off valves 43 and 14 movably mounted in the steam chest are each provided with an opening 4L5 which extends entirely through the valve at a suitable distance from the front end thereof and with a channel or groove 16 which is made in the valve on the side that bears against and slides on one face of the steam chest, this channel or groove being closed at its upper end and open at its lower end and'located immediately in rear of the opening 45 so as to have the steam port 38 communicate with the passage'37 leading to the exhaust pipe from the steam'chest. On the opposite ends oif'the crank shaft 16 are driving wheels 47 .u wliere bythesteam engine can be utilized for driving machinery. Leading to the steam chest 13 is a steam supply pipe 48.

The operation of the invention is as follows: While the pistons in the cylinder 11 are moved outwardly therein to their fullest extent the pistons in the other cylinder 12 are moved inwardly nearly in contact with each other. The valve 44: is moved so as to have its opening 45 register with the steam port 38 and the channel or groove 46 of the said valve is moved to form communication between the steam port 35 and the exhaust passage 37 so that steam will be admitted to the cylinder 12 to drivethe pistons therein in opposite directions and steam in the rear of said pistons will be forced out through the exhaust port or pipe leading from said steam chest. The valve 43 at this time has been shifted so as to have its opening 45 in register with the steam ports 85 whereby steam from the steam chest will be forced or admitted through the steam portions 35 in rear of the pistons in said cylinder 12 so as to drive the same toward each other, and as they advance the exhaust of said cylinder takes place through the steam port 38 having communication with the exhaust passage 7 37 through the medium of the channel or groove 46 in the slide valve. 7

What is claimed is 1. In a steam engine consisting of a pair of parallel cylinders, a plurality of pistons arranged in said cylinders, a steam chest arranged between said cylinders, a curved passageway connecting each cylinder with said chest, a plurality of valves slidably arranged within said chest, each of said valves being formed with a transverse inlet slot and an angular channel arranged to register with an exhaust pipe.

2. In a steam engine consisting of a pair of parallel cylinders, a plurality of pistons arranged in each cylinder, a valve chest arranged between said cylinders, passageways connecting the central portion of each cylinder with said chest, a chamber arranged on either side of said chest, passageways connecting each of said chambers with the end portions of its adjacent cylinder, a plurality to register with an opening formed in one of said chambers.

In testimony whereof, I afiix my signature, in presence of two witnesses.

LEWIS S. PUTMAN. Witnesses O. B. JANETT, B. K. BOWEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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