US656504A - Governor for water-wheels. - Google Patents

Description

No. 656,504. Patented Aug. 2|, I900.

' C. P. BRADWAY.- 1

GOVERNOR FUR'WATER WHEELS.

(N M d {Application filed Dec. 21, 1899.;

U D B r Witnesses UNITED STATES PATENT OFFICE.

GOVERNOR 'FO R WATER-WH EELS.

SPECIFICATION forming part of Letters Patent No. 656,504, dated August 21, 1900. Application filed December 21, 1899. Serial No. 741,l66.- (Nb-mans To all, 7071 0110 zit may concern Be it known that I, CHARLES P. BRADWAY, a citizen of the United States, residing at West Stafford, in the county of Tolland and State of Connecticut, have invented certain new and useful Improvements in Governors for W'ater-W heels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. This inventionrelatcs to governor mechanism for hydraulic motors to control the speed according to load and pressure of water, the mechanism being designed to open and close the gate more or less as may be required to meet existing conditions. For a fnlldescription of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for eifecting the result reference is to be had to the following description and to the drawings hereto attached.

' reference characters.

i While the essential and characteristic features of the invention are necessarily susceptible of modification, stillthe preferred embodimentof the invention isillustrated in .the accompanying drawings, in which Figure 1 is a perspective view of a governor for a turbine water-wheel constructed in accordance with and embodying the essence of the invention. Fig. 2 is a front view, partly in section, and showing a coil-spring connecting the governor-arms. I

Corresponding and like parts are referred to in the following description and indicated in both views of the drawings by the same The framework for supporting the working parts of the governor mechanism may be of any form of construction, and, as illustrated, consists of a base 1, uprights 2, 3, and 4, a

cross-piece 5, connecting the uprights 3 and 4,

and a transverse bar 6 between the uprights2 and 3. A shaft 7 is journaled in bearings provided at the upper ends of the parts 3 and 4 and has a band-pulley 8 and a gear-wheel 9. This shaft is driven from the shaft or other rotating part of the turbine wheel or engine in any convenient way, preferably by means of a belt (not shown) passing over the pulley S. Bearings 11 and 12 are provided. at resleeve a and is provided at its upper end with f nected therewith. A block or sleeve,18, mov able on the upper reduced threaded end of the shaft 10, is clamped between the washers 13 and has depressions in its opposite sides for the purpose presently to be explained. A gear-whee114, intermeshing with the gearwheel 9, is secured upon the yoke 15 to 1'0- tate therewith, and the y0ke.15 is mounted upon the upper end of the sleeve a and turns freely thereon. The shaft 10 has free vertical and rotary movement through the sleeve a. The governor-arms 16 are fulcrumed tothe yoke, and their horizontal arms enter the depressions in the sides of the block 18,'so as to efiect a positive movement of the shaft 10 in either direction., A spring 17'connects the pendent arms of the parts 16 to materially assist in returning them and the operating spaced plates or washers 13, adjustably conparts to a normal position after being actu ated. .This spring may be flat and-bowed, as shown in Fig. 1, or it may be of the coil type, as shown in Fig. 2. adjustably connected with the shaft 10 they may be moved to accommodate the governorarms or any relative position of the members thereof. The block or spacing-sleeve 18 is adjusted by backing one of the washers and correspondingly advancing the other washer. Binding-nuts 19, mounted upon the threaded end of the shaft 10, secure the washers 13 and part 18 in an adjusted position.

Gear-wheels 20 and 21 are mounted upon the shaft 10, so as to turn therewith, yet admit of said shaft moving freely therein vertically under the action of the governor mechanism. Friction-cones 22and 23 are formed 7 with or secured to the respective gear-wheels 20 and 21, and the bent ends 24 of a yoke-bar 25 enter the grooves or spaces 26, formed between the cones and gear-wheels to hold them in fixed relation. This yoke-bar 25 is secured to anextension 27 of the upright 2. Frictioncups 2 8 and 29 are adjustably connected with the shaft 10 and rotate therewith and are adapted to engage with the respective fric tion-cones22 and 23 to positively drive the end of the lever 43 is raised and its inner end depressed, thereby preventing contact of the friction-cnp'29 with the cone 23.- Thispinion gear-wheels and 21 in alternation to rotate the gearing-wheel 31 in reverse directions to and 4.

The shaft has a gear-wheel 31 at its inner end in mesh'with the gear-whee1s 2O and2l and a pinion 32 in mesh with a gear-wheel d, afi'ixed to a shaft '0, parallel with :the shaffi30 and journaled in the uprights 3 andgt; [A e is slidable on the-shaft c, butl'ieyed to rotate therewith. A shipper-bar 33 isslid- 1 ably mounted in ways in the uprights 3 and 4 and has a handle 34 at its outer endanda pin'35 to enter a groove 36 in a hub extension 'of the pinion e. Upon operating the shipper 33 the pinion 6 can be thrown into or out of gear with the gear-wheel 37, fixed upon a shaft 33, parallel with the shafts 30 and c and mounted in bearingsof the uprights 3 and 4. The shaft 38 is threaded, ,as shown at 39, and

v atrip 40 is mounted thereon and carries a pin speed of the turbine exceeds the 41, wot-king in 'a slot 42 of a lever i3, arranged below the shaft and f ulcrumed to the upright 3. The inner end of the lever 43'coope'rates with a collar-i4, attached to the shaft 10, and its outer end is forked and bears a roller 45,

arranged in the path of the trip 40, so as to be struck thereby and prevent injury to the turbine when overloaded. .A gear element 46 is appliedto the outer end" of the shaft 38 and. is connected with the gate-operating mechanism in any desired manner, so as to regulate its speed.

Under normal conditions the shaft 10 will occupy a position with both sets of friction cups and cones out of engagement-1f When required number of revolutions-per minute, the governor-arms will fly'outwardat their weighted ends and depress "theshaft 10 in the manner set forth and bring the -cup 28 and cone 22 into engagement and, rotate the shaft 38 inone direction and shut off the water-supply. Should the engine run-too slow after the parts have been set for a given speed, the-weighted ends of theIgovernor-arms will gravitate and efiect-an upwardmovement of the shaft 10 and bring the cone 23 and cup 29 into engagement, whereby the shaft 38 is rotated in a reverse direction and more water, admitted tothe wheel. Theshaft 10 and cups 28 and, 29

occupy a neutral position when the turbine is rnnningat the required speed. The shaft 0, with its 'gear elements (1 and 2, reduces the speed of the shaft 38 and prevents racing and enables the gate of the turbine to be i actuated at a moderate speed. When the trip e0-passes under the roller 45, the outer occurs-when the wheel-gate of the turbine is fully opened and more speed called for,

cur from continuing to workafter the gate is fully open'edJ In order to prevent damage to the turbine when the gate is shut by auxiliary power and to throw the regulator out of gear, an arm f is attached to the trip 40 and extends within the pa-thof'a pin or stop g of the shipper-bar 33: When the trip 40 reaches the limit of its inward movement, the arm f will strike the pin g and move the shipper-bar 33 and throw the pinion eand gearwheel 37 out of gear and the regulator out of action.

Having thus described the invention, what is claimed as new is- 1. In governormechanisimthe combination with the vertical shaft, governor-arms cooperating therewith, and a horizontal shaft adapted to be driven in reverse directions by means of said vertical shaft and having a threaded portion, a trip mounted upon the threaded portion of the horizontal shaft, a lever having-one end operatively related. with reference-to the vertical shaft and having its opposite end independent of and projected in the path of the aforementioned trip, and means between the said trip and lever to prevent relative rotation of the trip upon its shaft, substantially as set forth.

2. In governor mechanism,the combination with the vertical shaft, governor-arms cooperating therewith, and .a horizontal shaft adapted to be'driven in reverse directions from the vertical shaft and having a threaded portion, a lever having one end in engagement with the vertical shaft and having its opposite end portion longitudinally slotted and bent to embrace opposite sides of the aforementioned horizontal shaft, a connecting device joining the terminal portions of the spaced parts of the lever and located in the path of the trip, the trip andfentering lever, as and for thepurpose set forth.

3; In governor mechanisnnthe combination with the vertically-movable shaft, the governor-arms, a driven shaft geared to the vertieal shaft, and adapted to be rotated in reand a-pin projecting from the slotted end of the- IIO verse directions, clutches cooperating with the vertical shaft and gearing, and a gate controlling shaft geared to the driven shaft, of a shipper-bar for throwing the gate-controlling and driven shafts into and out of gear and having a stop, a trip connected by screw-thread with the gate-controlling shaft,

a lever adapted to be operated by means of the trip tothrow the clutches out of action, and an arm applied to the trip and movable therewith and adapted to strike the stop of the shipper'bar, substantially as described.

In testimony whereof I aflix mysignature in presence of two witnesses.

tannins r. BRADii'AY [1,. s]

Witnessesi'; N FRANK:.Z.;FA1RFIELD, MARSHALL -L. BRADWAY.

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