US746836A - Governing mechanism for fluid-actuated motors. - Google Patents

Description

No. 746,836. PATENTBD 1350.15, 1903.

H. HOLZWARTH. GOVERNING MECHANISM FOR FLUIDAGTUATBD M TORS.

APPLICATION FILED 001222, 1903- N0 MODEL.

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UNITED I ST TES Patented December 15, 19053.

PATENT ()F ICE.

HANS I-IOLZWARTI-I, OF HAMILTON, OHIO, ASSIGNOR TO THE HOOVEN- OWEN S-RENTSCHLER COMPANY,

TION OF OHIO.

or HAMILTON, OHIO, A CORPORA- SPECIFICATION forming part of Letters Patent No. 746,836, dated December 15, 1903.

Application filed October 22, 1903.-

Serial lilo. 178.063. (No model.)

To all whom it mayconcern:

Be it known that I, HANS HoLzWAR'rH, a citizen of Germany, residing at Hamilton, county of Butler, and State of Ohio, have invented new and useful Improvements in Governing Mechanism for Fluid-Actuated Mo tors, of which the following is aspecification.

My invention relates to improvements in governing mechanism for fluid-actuated mo tors.

The object of my invention is to provide adequate means for regulating the supply of motive fluid to the motor, whereby the speed of the latter may be kept uniform, the invention being especially designed for the control of turbines.

In the following description reference is had to the accompanying drawings,in which- Figure l is a vertical sectional view of my invention drawn on line a: a: of Fig. 2. Fig. 2 is a plan View with the upper portion of the casing removed. Fig. 3 is adetail sectional View drawn on line y y of Fig. 2. Fig. 4 is a detail sectional view drawn on line t t of Fig. 2.

Like parts are identified by the same refer ence characters tb roughout the several views.

1 is a turbine-shaft or a reduced end thereof.

2 represents governing-weights having levers 3 pivoted to a shaft-collar at 4.

5 is a sleeve spiined to the shaft and longi- This sleeve is connected with the governing-weights by links 6.

A valve-actuating shaft 8 is arranged to communicate motion through the bevel-gears 9 and 10 and valve-stem 11 to operate a valve at 12, controlling the delivery of motive fluid to the turbine through the pipes 13 and 14. The valve-actuating shaft 8 is driven from the turbine-shaft 1 through the medium of a worm-gear 18, worm-wheel 19, tubular shaft 20, sliding shaft 21, extending through" the shaft and splined thereto, friction-wheel 22 on the shaft 2i, and a friction-wheel 23 and its supporting-sleeve 24, the latter being mounted on and splined to the valve-actuating shaft 8. The movement and direction of rotation of said shaft 8 is determined by the relative positions of the friction-wheels 23 with reference to the center of the friction-Wheel or contact with the frictional wheel 23 through the medium of a spring-controlled bell-crank lever 28, fulcrumed at 29 and having one forked arm a loosely engaging studs 30, projecting from acollar 31, loose on the'shaft 21. The bell-crank lever 28 is actuated (against the-tension of its controlling-spring from the sleeve 5 through the medium of studs 37,

antifriction-rollers 38, mounted thereon, a yoke 39,1nounted on the rollers, and a post 40, connected with the yoke, the latter being linked to an arm b of said bell-crank lever 28. The arms of the. yoke 39 are provided with V-shaped notches 41, in which the antifriction-rollers 38 are engaged, whereby movement of the sleeve 5 in either direction from its normal position will be transmitted to actuate the yoke and post to push the same ontwardly at right angles to the sleeve and shift the friction-wheel 22 into contact with Wheel 23 through the medium of the bellcrankconnectionsabovedescribed. The normal position of contact between the frictionwheels 23 and 22 is at the center of the latter. A bell-crank lever is used to shift the hub 24 and wheel 23' along the valve-actuating'shaft 8, so that wheel 23 will be moved to one sideor the other of friction-wheel 22 in accordance with the direction in which it is desired to actuate the valve. This movement is also controlled by the governor, the bell-crank lever45 havingyoke-arms d,loosely engaging the. studs 37, and other yoke-arms 6, having linksfengaging studs 46 on a collar 47, rotatably mounted on hub 24. The pivot-rod 49 of the bell-crank lever 45 is suitably mounted in bearing-brackets 50,connected with the casing.

The operation of the device is as follows: When the turbine is at normal speed, the parts are in the position in which they are shown in the drawings. Any increase of speed causes the governing-weights and sleeve 5 to move outwardly, thus shifting the friction-wheel 23 inwardly through the medium of the bell-crank 45 and also forcing the friction-wheel 22 into contact with wheel 23 through the medium of the bell-crank 28 and its connections. The movement of the friction-wheel 23 will then be communicated to operate the valve-actuating shaft 8 and close the valve at 12 until the decreased speed of shaft 1 permits the governing-weights and connections to reassume their normal position. When the speed of shaft 2 is too slow the governing-weights move inwardly, when friction-wheel 23 is shifted outwardly to the opposite side of the center of friction-wheel 22 and the latter brought in contact with it to open the valve at 12. The friction-wheels and driving-gearing may be arrangedto actuate the valve at any desired speed.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with the shaft of a fluiddriven motor; of a valve-actuating Wheel; a driving-wheel therefor shiftable into and out of operative relation thereto; a centrifugal governor operatively connected with the shaft; connections controlled by the governor for shifting one of wheels past the axial line of the other; and connections also controlled by the governor for shifting said wheelsinto and outof contact with each other.

2. The combination with the shaft of a fluid-driven motor; of a valve-actuating friction-wheel; a friction driving-wheel at right angles thereto and movable into and out of operative relation thereto; connections for actuating the driving-wheel from the shaft; a centrifugal governor operatively connected with the shaft; a shifting-lever for the driving-wheel; a shifting-leverfor the valveactuating wheel; and connections adapted to communicate motion from the governor to said levers.

3. The combination with the shaft of a fluid-driven motor; of avalve-actuating friction-wheel; a friction-driven wheel mounted for side contact therewith, and operatively connected with the shaft; axially-movable supports for said wheels; centrifugal governing-weights operatively connected with the shaft; an axially-movable sleeve linked to the governing-weights; and motion-transmitting connections between the sleeve and said friction-wheel supports.

4;. The combination with the shaft of a fluid-driven motor; of a valve-actuating friction-wheel; a friction driving-wheel mounted for side contact therewith; axially-movable supportsfor said wheels; lever connections arranged to support said driving-wheel normally out of contact with the valve-actuating wheel; a governing device in operative relation to said shaft; an axially-movable sleeve mounted on said shaft, and linked to the governing device; and ayoke having angular faces, adapted to be engaged by projections on said sleeve when the latter is moved in either direction from normal position; said yoke being arranged to transmit motion through said lever connections to move the driving friction-wheel.into contact with the valveactuating wheel; together with means for transmitting motion from the sleeve to shift the valve-actuating wheel to opposite sides of the axis of said drivingwheel in accordance with the speed of the governor.

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

HANS HOLZ WARTH.

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