US395174A

US395174A - Xalvis r riedler

Info

Publication number: US395174A
Authority: US
Publication date: 1888-12-25
Anticipated expiration: 1905-12-25

Description

(No Model.)

A. RIEDLER.

VALVE GEAR.

No. 395,174. Patented Dec. 25, 1888.

WITNESSES M VE/VT/IB A TTUBIVEYS N, PETERS. Phnln-Lilhogrnpher. Wushingkon, o a

STATES 'ALVIS RIEDLER, OF AACHEN, PRUSSIA, GERMANY.

VALVE-G EAR.

SPECIFICATION forming part of Letters Patent No. 395,174, dated December 25, 1888.

(No model.)

Patented in Germany December 23, 1886, No. 42,346; in

Austria-Hungary December 24, 1886, No. 35,379 and No. 65,621,- in France January 19, 1887, No. 181,005, and in England January 19,188'7,N0.855.

To all whom it may concern:

Be it known that I, ALVIs RIEDLER, a subject of the King of Prussia, Emperor of Germany, residing at the city of Aachen, in the Kingdom of Prussia, Empire of Germany, have invented certain new and useful Improvements in Valve-Gear, (for which Letters Patent have heretofore been granted to me in Germany, Noetflfid, dated December 23, 1886; in Austria-Hungary, No. 35,379 and No. (55,621, dated December 21, 1886; in France, No.

1 181,005, dated January 19, 1887, and in England, No. 855, dated January 19, 1887,) of which the following is a specification.

This invention relates to improvements in valves for pumps and air-compressors that open automatically, but are closed by the action of a separate power-for example, the pressure of a spring, weight, or liquid under pressure.

The invention consists in the combination, with a valve, of a downwardly-pressing spindle above it, a rocking lever-arm for raising the spindle, and mechanism for operating the rocking leverarm from the motor of the pump or air-compressor. The valve-gear does not raise the valves, but raises the rods above them, thus permitting the valve to open, and

then the valve-gear permits the (lownwan'lly-v pressed rod to descend slowly and close the valve.

In the accompanying drawing a diagram matical side view oi my improved valve-gear is shown, parts being broken out and others being in section.

1; is the pressmre-valve, and "v' the suctionvalve. Above the two valves 1* and v the two spindles s and s,.respectively, are mounted to slide vertically in suitable stuffing-lmxes, 25 and if, in the valve-casing A. Said spindles s s are not connected with the valves 1: 1:, but are pressed downward at all times by a separate and independent source of force or power,

under the action of the spring f and liquid under pressure, respectively, to move downward and to press down and close the valves 2/ o. Between the spindles s s the rock-shaft 10 is mounted, and from the same the two leverarms h h project in opposite directions, and an arm, 71 projects downward at right angles to the lever-arms 71 7t. The ends of the arms h h enter slots in the spindles s s, or rest against projections of said spindles, and the arm 71 is connected by means of a rod, a, either directly or by intermediate rods, 0", with a crank or eccentric, h, from which the arms 7L2 and h h are thus rocked. During the time the eccentric moves from c to e the arm h raises the spindle s, that is pressed down by the liquid in the cylinder 0 from the valve 1!, thus permitting said valve to rise and open. \Vhen the arm 7L swings down, the spindle s is pressed down by the liquid acting on its upper end, and said rod 3 presses the valve 0; upon its seat and closes it. The valve is not closed abruptly, asthe spindle rests upon the end of the lever-arm 7L and cannot deseen d any faster than said lever-arm. During the time the lever-arm h moves upward the lever-arm 7L moves downward, and the spindle s is pressed downward by the spring f and closes the valve 1:. During the downward movement of the lever-arm h the lever-arm 7L rises and raises the spindle 9 from the valve 1:, thus permitting said valve to rise.

In the case the valve-gear eccentric does not change its stroke at the same time the pump piston-crank does--for example, when the end of the pump piston-crank is at k, and 8 5 the connection of the rod 7' and the eccentric is at c-the eccentric will move from the point e to the point 6' before the stroke of the valves changes. \Vhen the eccentric is at c, the valve 21 has already been closed, and during the time the eccentric moves from c to e the lever-arm h swings downward in the slot of the spindle s, and the spring f keeps the valve 1) closed. At the same time the lever-arm h raises the spindle s more than is necessary. All this, however, has no influence on the operation of the valves.

hen the eccentric of the valve-gear and '10 from a separate eccentric.

the pump-piston change their stroke at the same time-that is, when the angle g:or in the case the arm 7L2 is operated by a rod that,reciprocates with the pump-piston, the above movements do not take place, but the valves open and close in the usual manner.

It is not absolutely necessary to operate both valves v and 0 by the same gear, as the spindle above each valve may be operated The valves 1 and '0' may have one or more seats, as may be desired.

In case springs are to be used exclusively for pressing the spindles upon the valves, they may be located within the valve-casing A. The rockin -shaft \V can be mounted to pass through stuffing-boxes and transversely through the valve-casing A, the lever-arms h 76' being within the valve-casing. The valvegear may be operated by any eccentric or crank, and any eccentric on the motor-engine of the pump may be used for this purpose. Any rod reciprocating with the pump-piston may be used for operating the spindles s and 3' either directly or indirectly. The reciprocating rod may be operated from the main crank of the shaft instead of by a separate eccentric.

It is essential in all constructions that the reciprocating or rotary motion of the driving elementhave sufficient power to overcome the pressure exerted 011 the spindles before the valves begin to open, and that the said pressure can operate freely when the valves are 3 5 to be closed. In all cases the valve-gear never opens the valves and only closes them by intermediate mechanism.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 4o 1. The combination, with a valve of a pump or aircompressor, of a constantly-compressed spindle adjacent to the valve, said spindle being independent of and not 0011- nected with said valve, and alever acting on 5 the spindle, as described, so as to impart a positive oscillating motion to said spindle, substantially as set forth.

2. The combination,with the valve of a pump or air-compressor, of a constantly-pressed 5o spindle adjacent to said lever, said spindle being independent of and not connecting with said valve, a lever acting on the spindle, a crank or eccentric, and a rod operating the fulcrumed lever from said crank or eccentric, substantially as set forth.

3. The combination, with a valve casing or casings, of valves in the same, a constantlypressed spindle adjacent to each valve, a rocking shaft, lever-arms on said shaft engaging the spindles, and mechanism, substantially as described, connecting said rocking shaft with a movable element of the pump or air compressor, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALVIS RIEDLER.

\Vitnesses:

J OH. HECKMANNS, F. LANGER.