US123635A

US123635A - Improvement in steam-engines

Info

Publication number: US123635A
Authority: US
Publication date: 1872-02-13
Anticipated expiration: 1889-02-13

Description

J. R. MAXWELTEL EZRA COPE.

Improvement in Steam Engines.

No, 123, 35 Patented Feb. 13, 18 7-2. I

Z Wm

' steam-cylinder.

uirr STATES-{PATENT-TQFFIGE JAMES R. MAXWELL, OF CINCINNATI, OHIO, Ann I n zitA corn, on oo'v'rne. TON, KENTUCKY;

IMPROVEMENT lN STEAM-ENGINES.

Specification forming part of Letters Patent No. 123,635, dated February 13, 1872.

To all whom wt may concern:

Be it known that we, JAMEs R. MAXWELL, of Cincinnati, in the county of Hamilton. and the State of Ohio, and EZRA Corn, of Govington, in the county of Kenton and State of Kentucky, have invented a new and useful cast in one piece with its bed, affording two crank-shaft bearings at one end and a combined connecting piece and cross-head guides at the opposite end. Customary steam and exhaust ports and passages of a slide-valve engine are formed in and lead from a raised valve-seat cast at the same time on the steamcylinder. The inner cylinder-head with its stuffing-box is fitted and secured within the The other cylinder-head is secured in the usual manner to the opposite end of the steam-cylinder. B and B represent a cross-head formed in two sections. As requisite to insert and adjust the cross-head, when fitted to be bolted together between the guide-ways, each section of the cross-head is a counterpart of and substitute for the other, and has one slide and one socket-hub or piston-rod boss. The cross-head is bored out transversely to receive the journal L. 1

In Fig. 3, B and B represent the cross-head in transverse section, with the journal L neatly fitted therein to have a motion in its been ing when the connecting-rods M and M are secured on the protruding ends of the journal L by pins or otherwise, and connected up in operative condition. The cross-head is turned off to conform to the guide-ways, which are fitted for the cross-head by boring at one set-' ting to bore the steam-cylinder.

Fig. 5 represents the valve-seat raised to admit the play of the indented finger Gr within. the enlarged exhaust-passage, and to en gage with and throw the valve H within the? steam-chest.

In Figs. 2 and 6, N represents a sleeve bolt-3 ed to the side of the exhaust-passage to form; a bearing for the rocker-shaft, as shown in Figs. 2, 4, and 6. The indented finger'Gr is preferably formed on one end of the rockershaft. On the oppsite end of the rocker-shaft is secured the arm F, with a curved slot to serve in adjustments of the valve-gear.

In Figs. 1 and 2, O and 0 represent a crankshaft sustained in two bearings, and having two journals for the main connecting-rods M and M between the two bearings, with a balance-wheel on one end and an eccentric or crank on the opposite end .to impart proper motion through the connecting-rod E to the valve H when all the parts are connected up. and adjusted ready for the admission of steam into the steam-chest in the usual manner, and thus initiate the movement of the relating parts as combined and arranged to successful operation for the varied uses and purposes of such enginery, but more especially suited as. a motor for any piston or plunger-pump bolted to the flanged end of the connecting piece, with the piston-rod of the pump attached to the cross-head.

Having thus fully described the manner of making and using our invention, what we desire to claim, and secureby Letters Patent,

1. We claim the cross-head of a steam-engine, when constructed, as shown, of two pieces bolted together, each piece provided with one slide, one hub or piston-rod boss, and part of the bearin g for the pitman-journal, all formed in the casting for the purpose as described.

2. The arrangement of the crosshead guides fixerf asunder in the casting, the crossa structed and operating substantially as shown.

and described.

3. We also claim the slide-valve H, incombination with the sleeve N and finger G, the

arm F,, connecting-red E, and the eccentric orcra-nk D on the shaft 0,.' all constructed and operating substantially as shown and described, for the purpose herein set forth.

JAMES R. MAXWELL. EZRA COPE. Witnesses:-

N. MARGHANT, JOSEPH MosEs.