US311775A - Cut-off and reversing gear - Google Patents

Description

(No Model.) 2,S l1eets-Sheet 1. H. H. MEYER.

. GUT-OFF AND REVERSING GEAR.

No. 311,775. Patented Feb. 3, 1885.

I Q: Q

74 1} as as:

4 ModeL) 2 Sheets-Sheet 2.

H. H. MEYER.

GUT-OFF AND REVERSING GEAR.

N0. 311,775. Patented Feb. 3, 1885.

1Q if N. PETERs, Pnmwmq m w. wasmnunn o c rrrcn.

HERMAN H. MEYER, OF DENVER, COLORADO.

CUT=-OFF AND REVERSING GEAR.

i'JPEUIFICATIOII forming part of Letters Patent No. 311,775, dated February 3, 1885.

(No model.)

To aZZ whom it may concern:

Be it known that I, HERMAN-H. MEYER, a citizen of the United States, residing at Denver. in the county of Arapahoe and State of lolorado, have invented new and useful Improvements in Automatic Cut Off and Re versing Gear for Steam-Engines, of which the following is a specification.

Myinvention relates to improvementsin automatic cut-off and reversing gear for stcanr engines; and the objects of my improvement are to produce an automatic cutoff gear in which the speed of the engine can be varied while the engine is in motion, and which will automatically regulate itself according to the load or machinery to be driven, and to adapt the cut-off gear for reversing hand-connect-ions for engines which require to be reversed.

My improvement consists of a peculiar arrangement and combination of link and cocentric connections for the cut-off valve, whereby a stationary engine may be used with aregulating-governor or with reversing handlever connections for locomotiveengines.

Referring to the accompanying drawings,'

Figure 1 represents a side elevation of an engine with the cut-oftvalve gear connected to the governor, and Fig. 2 represents a plan view of the same with the governor removed. Fig. 3 represents in elevation the cut-off gear with hand reversingconncctions, and Fig. 4 a plan of Fig. 3.

The cylinder, bed-plate, and other parts of the engine are of any ordinary construction,

and I shall confine the description to the automatic cut-off gear and its constructions.

The cut-off gear embraces a link, A, which moves on a bcaring'block mounted in a brackct, B, secured to the bed'plate or other suitable part of the engine. Thelink Ais provided with a lug,a,to which ashort rod, 0, having an eye in each end, is attached with one end, while its other end is attached to the eccentric D, and the link-bearing block is connected by the link-rod E to a rockernrml, to which it com municates motion. The eccentric-rod Fis connected to a rocker-arm, H, extending downward and secured to the end of the rock-shaft L, and by a short arm, G, that extends upward, is connected With the valve-stem K, which operates the valve and cuts off the steam, as required. These rocker-arms are suitably mounted upon the bed-plate. A rod, 0, is connected at its lower end to the link-rod E and at its upper end to a lever, N, pivoted to a lug or bracket, n, on the stand or column of the governor, and receiving motion from the governor as the balls rise and fall, according to thevelocity at which the engine travels. The lever N is attached to a collar, 0, with which the toes p on the arms of the governor-balls have a bearing-contact, and impart motion as the speed varies. According to the load or amount of work to be performed by the en'- gine,the speed is regulated, and can be varied by means of a weight, M, which can be adjusted on said lever by a set-screw, m.

It will be understood by those skilled in the art that any other kind of governor can beemployed, and that the cut-off is automatic, and that the speed can be changed while the engine is in motion, which cannot be done with cut-off connections in which the governor revolves with the engine-shaft-as, for instance, if an engine is driving two dynamo-motors, and one is shut off, the speed of the engine must be changed as the power is changed; or, if an engine is running a stamp-mill, the speed of the stamp has to be changed according to the variation in the ore.

The operation of the cut-off gear is as follows: The eccentric issct on the shaft opposite the crank'pin, as shown in Fig. 1, while the valve is just beginning to open the steamport. As soon as the eccentric moves downward the link begins to vibrate and moves the rocker-arm, which gives the valve the proper steamopening. If, however, the rod E, with the link-block, is in its highest position, as in the drawings, the rocker-arm will not vibrate, and consequently will not allow the valve to open the steam-port at all. in effecting the connection of the link A with the eccentric D, is arranged to stand in a position nearly at right angles to both the eccentrio-rod F and the link-rod E, and it is this peculiar connection for the link that gives the advantages stated.

By dispensing with the governor the cut-offvalve connections can be used with hand-connections for reversing the engine, as shown in Figs. 3 and 4, in locomotives and other engines which require to be reversed. These connections consist of a rod, E, having a The short rod 0,.

square block and pin at one end to fit into the link A, and connecting with a pin on the arm of the rock-shaft. To said rod E a short link, P, is attached, which-is connected at its lower end to a bell-crank, 0, while to the opposite end of said bell-crank is attached a rod, Q, extending to the front end of the engine, and thus serving to operate the engine while in motion to reverse it. .In moving the rod Q the block will be moved up or down in the link, and the engine will run in one or the other direction, as desired.

I claim.

1. In an automatic cut-off gear for steamengines, the combination, with the cut-offvalve connections and the eccentric, of the link A, mounted upon afiXed-pin connection, and the swinging rod 0, arranged between the link and the eccentric and forming a direct con nection therefor, substantially as herein set forth.

2. The combination of the link A, the-linkrod E, the rocker-arm I, and the rod 0 with the eccentric D, the arms H and G, and the valve-connectingrod K,substantially as shown and set forth.

3. The combination, with the governor, the cutoff-valve rod K, and the eccentric D, of the link A, mountcd upon a fixed pin, the

swinging rod 0, arranged between and form- 0 connected to a pivoted lever, N, attached to 40 and operated by a governor, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HERMAN H. MEYER.

Vitnesses:

WILLIS G. CLARK, M. J. SPAULDING.

Images