US674347A

US674347A - Oscillating engine.

Info

Publication number: US674347A
Application number: US1991700A
Authority: US
Inventors: Frank Whitman
Original assignee: FRANK A WORDEN
Current assignee: FRANK A WORDEN
Priority date: 1900-06-11
Filing date: 1900-06-11
Publication date: 1901-05-14
Anticipated expiration: 1918-05-14

Description

No. 674,347. Patented May I4, 190|.

F. WHITMAN.

OSCILLATING ENGINE.

(Application med .rune 11, 1900.)

(No Model.)

un pl lamrlll" will e 5 6 fizvenog" L 756? UNITED l STATES PATENT OFFICE.

FRANK WHITMAN, OF YPSILANTI, MICHIGAN, LASSIGrNOR OF ONE-HALF TO FRANK A. WORDEN, OF SAME PLACE.

osclLLM-l Ncy ENGINE.

SPECIFICATION forming part of Letters Patent No. 674,347,l dated May 14, 1901;

Application filed June 11, 190. SerialNo. 19,917. lNo model.) l

To all whom t may cov/cern:

Beit known that I, FRANK WHITMAN,a citiin the peculiar construction, arrangement,

w, Fig. l; and Figs. land 5 are perspectiveviews of some of the parts detached.

A is the cylinder of the engine, which is provided centrally on opposite sides thereof with trunnions B, journaled in the standards C, preferably in roller-bearings D therein. Through these opposite trunnions are formed, respectively, the steam and exhaust passages E and F, which connect with passages G and H, extending through the walls of the cylinder to opposite ends thereof.

I and J are the ,cylinder-heads, each of which is provided with a transversely-arranged cylindrical casing .K, containing a rocker-valve L.V The passages Gr and H are connected with the casings K by channels M and` M', formed in the cylinder-heads, connecting with ports N and N in the casings.

-O represents ports leading from the casings into the cylinder.

The valves L are adapted to cover the ports O and N', and each is provided with a central channel P, adapted in one position of the valve to connect said ports O and N.

Q represents stems for rocking the valves, which pass out of the casings K through suitable packing-glands.

Around one of the trunnion-bearings D are secured the segmental racks R and R'. These are preferably secured in position free to have `a limited rotary movement on 4the bearing by a ring S, which embraces the laterally-extending segmental .flanges a on each of the racks.

The racks are of such a` length as to leave a space between their ends which will permit of 5 5 their being rocked through a limited angle.

T and T are links pivotally connected to the racks R R', respectively, and connected at their opposite ,ends to a head or operatinghandle U, lwhich is adjustably secured upon 6o a stem V by means of a set-screw V.

W represents gear-segments secured to the valvestems Q and meshing with the segmental racks R and R.

, X is the piston in the cylinder, having a pis- 5 Aton-rod X', which is directly connected to the crank, (not shown,) as usual in oscillating engines.

Inoperation steam is admitted through a suitable inlet-pipe hav-ing a swivel connec- 7o vtionwwith the trunnion B into the passage E,

from which it passes through the passage G," channels M, and ports N into the casings K yat opposite ends of the cylinder. Here it is controlled by the valves L, which are so set 7 5y that when the. racks R R are in the position shownin full lines, Fig.v8, theengine will be driven in one direction, steam being admitted through the yports O when ,uncovered by the valve andexhausted through said ports, the 8o' channels P, port N', channel M', and passages Hand F. When the racks are moved into the position shown in dotted` lines, Fig. 3, which may be accomplished by unfasten-ing the set-screw V' and moving down the head 85 U on the stem V, the valves L will be rocked into a'position to drive the engine inthe opposite direction.

A point of advantage in my construction is that the clearancesare reduced to a mini- 9o mum, the valves L being located'directly on the cylinder-heads, having only the small ports O between them and the cylinder-space.

A further advantage is obtained from the peculiar construction of reversing mechanism which, while simple in construction, is easily operated and not liable to get out of order. What I claim as my invention is'- 1. In an oscillating engine, rock cut-o valves located on the opposite heads of the roo cylinder, gear-segments on the stems of said valves and a stationary segmental rack with which said gear-segments mesh.

2. In an oscillating engine, the combination with the cylinder having a trunnion and a stationary hearing in Which said trunnion is journaled, of rock out-off valves at the opposite ends of said cylinder, gear-segments on the stem of said valves, segmental racks with which said gear-segments mesh journaled on said trunnion-bearings,and means for moving said racksegments oppositely to reverse the Valves.

3. In an oscillating engine, the Combination With the cylinder having a trunnion, a stationarg7 bearing in which said trunnion is journaled and rook eut-olf valves at opposite ends of said cylinder, having gear-segments on their stems, of the segmental racks R and R having the laterally-extending anges d, the ring S for securing said racks on the trunnion-hearing in mesh with said gear-segments, the links T and T secured to said racks and the adjustable head U to which said links areeonnected substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two Witnesses.

FRANK WHITMAN. Witnesses:

J. WILLARD BABBITT, JOHN P. KIRK.