US1310738A - And oliver d - Google Patents

Description

V. Z. CARACRISTI AND 0. D. H. BENTLEY.

GOVERNOR MECHANISM.

APPLICATION mu) APR.9. 1917.

1 ,3 1 0,738 Patented July 22, 1919.

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' Z %M ua tl 'rmz COLUMBIA PLANOGRAPII co., WASHINGTON n c.

V. Z CARACRISTI AND O. D. H. BENTLEY.

GOVERNOR MECHANISM.

APPLICATION FILED APR- 9. 1911.

1,310,738, I Patented July 22, 1919.

2 SHEETS-SHEET 2.

fivmifars THE COLUMBIA FLANDGRAPH C0 WASHINGTON. D4 c.

with a throttling governor for VIRGINIUS z. CARACRISTI, 0F BRONXVILLE, NEW YORK, AND OLIVER 1). H. BENTLEY,

OF WEST ROXBURY, MASSACHUSETTS, ASSIGNORS To B. r. sTURT vANT COMPANY, OF HYDE PARK, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS.

eovERNoR MECHANISM.

Specification of Letters rares P t ted, July 22,1919.

Application filed'April 9, 1917. Serial NO. 16Q,744.

of the United States, residing, respectively,

at Bronxville, Westchester county, New York, and WGStROXbUIY, Sufi'olk county, Massachusetts, have invented certain new and useful" Improvements in Governor Mechanisms; and wedo hereby declare the following to be a full, clear, and exact description of the invention, such as will en able others skilled in the art to which it appertains to make and use the same. A

This invention relates-to the govering of turbines or other engines, and particularly to the mechanism for connecting an engine of actuating the latter.

Ithas heretofore been proposed {to com,

nect an-enginewith a ithrottling governor by mechanism, for actuating the governor,-

which is adjustable to drive the governor at different speeds relative to that of the engine, whereby the normal speed ofthe en glne may be varied without change in the normal speed of the governor. One object of the presentinventlon is to produce a with the continued operation of the mechanlsm. i A A i I 4 Another object of the invention, relating more particularly to its usein connection with a steam-turbine, is to produce a compact, simple and strong arrangement of the turbine and the governor-actuating mechanlsm.

, The obi ects j ust I mentioned, and others" which will be set forth hereinaftenare attained by the construction hereinafter set,

forth and defined in the appended claims;

In the accompanyin drawings, Figures 1 and 2 are respective y a front-elevation and a side-elevation of ,mechanism embodying' the present invention, Fig. 1 being partly in section on the line 1 1 in Fig.2, and Fig, 2 being partly in section on' the line 2 in-Fig. 1. 1

the usual manner.

the Purpose. carries a head 12, upon which a flat drivingdisk 13 ismounted. 1 This disk is engaged The invention is illustrated as embodied ii -apparatus comprising a steam-turbine ofa wellknown form, this turbine havin the usual casing 5, within which the tur inewheel or rotor 6 is inclosed. The nozzles and other static members of the turbine are inclosed Within and supportedby the casing, andthe casing is'provided with an integral steam-chamber 7 through which steam is supplied to the several nozzles in The steam is introduced to the steam-chamber through a governorvalve 8, controlled by a throttle-governor having centrifugal mechanism 9 of a familiarform. The governor is provided with the usual horizontal drive-shaft 10, as shown in'Fig. 1.

The governor is actuated by power derived fromthe turbine. through variablespeed frictionaldrive-mechanism. As shown in Fig. 2 one, end of the turbine-shaft 11 by a friction-wheel 1 1 of which the hub is mounted on a countershaft 15 parallel with the face of the disk 13. The friction-wheel is splined to the countershaft, so that it may rotate the latter while being free to move alonglthe ,countershaft and thus vary the distance'between theaxis of the disk and its point of engagement with the friction-wheel. .The countershaft 15 is provided, at one end, with a pinion 16which drives a gear 17 fixed on the drive-shaft 10 of the governor.

A collar 30 is connected with the hub of the friction-wheel 14 by ball-bearings, and this collaris pivoted to a bifurcated arm 18 projecting ,from a sleeve 19. This sleeve is screw-threaded, and is mounted upon a screw-threaded shaft2O parallel with the countershaft15. The shaft 20 is connected,

by bevel-gears 21, with a vertical shaft 22. By rotation of the shaft 22, manually or in anyconvenient manner, the shaft 20 may be rotated so as to cause the sleeve 19 to move along the shaft and produce a traversingmovement of the friction-Wheel 1 1 on the countershaftt This movement results in a change in the speed of rotation imparted to the governor for any tation ofthe turbine shaft.

flFor the purpose of supporting and incasing the movable parts of the change-speed mechanism ahousing 28 is connected rigidly with one of the bearings of the turbine,

as shown in Fig. 2, andthis housing incases the friction-disk 13. The housing is closed at the front lby a plate 24, from which a given Speed of ro- --The plate 24 is provided with an opening,

as shown in Fi 1, through which the friction wheel PI'OJBQlJS into engagement with the'fri-ction-disk. A lug 28 projects from the bottom of the casing 26, and is perforated to embrace a stud 29 projecting from the plate 24. A spring coiled around the stud engages the lug and acts to swing the casing 26 rearwardly about the pivotal mounting provided by the shaft 20, so'as to press the friction-wheel constantly against the disk with a uniform pressure and to take up any wear which may occur in these members. i

Through the parts just described the change-speed mechanism is firmly supported by a direct connection with the'turbin'e-casing, so that the two make a unitary con structl-on and are; mamtamed always 1n proper operative relation. Another valu-* able feature of the invention resides in the relative arrangementbf the shafts 10, 15

and 20; The shafts 10 and 20'- 'are in axial alinement, and consequently any swinging movement of the casing 26, and the countershaft 15 which is supported byit, does not interfere with the correct meshing of the gears16 and I7; Owing to the fact that the shaft 20 constitutes notonly the means for 1 moving the arm 18 and the friction-wheel,

but also the pivotal support. of the casing 26, the swinging movements of the casing do not interfere with the actuation and Control? of the friction-wheel by the shaft 20;

The invention is not, limited to the emlbodiment described and illustrated inv the accompanying drawings, but may be" e1n-, bodied in various other forms within the scope of the following claims.

Having now described the invention and, the preferred form of practising it, it is lowing claims.

What is 01 'med as new. is:-. v

1. The combination, with an engine, and a governor provided with a drive-shaft,of a countershaft; a support in which the countershaft is journaled parallel 'with said drive-shaft, said support being. movable definitely stated its true scope in the fol- 7 about an axis; coincident with. the axi'sof thei drive-shaft; a friction-wheel splined on the countershaft; a frictional drive-member Withwhich the friction-wheel coeperates, said drive-memberbeing connected with and actuated by the engine; gears connecting the governor drive-shaft with the countershaft;

meansfor moving said support as aforesaid, to regnlatethe engagement of the frictionwheel with the frictional drive-member; and means for moving the friction-wheel along thecountershaft .to vary its point of engagement withthe drive-member. l

2. The combination, with a governor provided With a drive-shaft, of a support arranged to swing about an axis substantially coincident with the axis-of said drive-shaft;

a countershaf-t journaled' on said-support parallel with said axis; gears connecting the" drive-shaft and the countershaft; a frictions wheel splined to the'countershaft; a drivingmember in frictional engagement with the friction-wheel; a" screw-threaded shaft substantially coaxial with the pivotal movement of said support and means, formoving the friction-wheel along the countershaft, comrisin a member connectin the friction- Wheel and the threaded shaft and having a screw-threaded engagement with the latter.

3. The combination, with a governor, of a screw-threaded shaft; a-support arranged to swing about the axis of said shaft; a countershaft, j ournal'ed in thesupport; par

allel with the threaded shaft; la"friction-- wheel splined on the countershaft; a'driving-member in frictional engagementwith the friction-wheel; means for swinging saidsupport to maintain such frictional engagement; a shifting member connected withthe friction wheel threaded shaft, said memberbeing' adapted to cause a traversing movement of the frie tion-wheel whenmoved by rotation of the threaded shaft; and driving connections,=be

tween the countershaft and the"-"gover'nor,

adapted to yield to swinging movement of the support and the conntershaft.

4. The combination, wlth a governor; of a frlctlonal driving-member; a frictional driven member; means, including" a rotary shaft, connected w th the driven member to and] threaded 1 upon the cause a'traversing movement. thereof to vary the, sp eed' with which' thedri'ven member is actuated ahousing inclosing said frictional members and comprising a stationary part and a part pivoted to the-stationary partjon the axis of sai'dshaft; a countershaft, 011" which the driven member ismounted, jour naljed on the pivoted part of-the housing;

and driving connections between the countershaft and the governori a governor therefbr" providediwith a drive shaft, a counter-shaft connected to the/driveshaft, a frictiondisk drivenjfrom the en gine, afriction wheel carried by, the countershaft for rotating said shaft, the" wheel being. adjustable across 'the'fface of the disk, a'nda pivoted support for the bearings for thecoimter-shaft tending to swingsaid shaft 5;]The combination with engine of toward the disk to maintain said shaft parallel with the face of the disk and the friction wheel in yielding contact with the friction disk.

6. The combination with an engine of a governor provided with a drive shaft, a counter-shaft connected to thedrive shaft, a friction disk fixed upon the engine shaft, a friction wheel carried by the counter-shaft and adjustable across the face of the disk, a main housing inclosing the disk and provided with an aperture through which the friction wheel projects to contact with the friction disk, and a supplemental housing for the friction wheel.

7. The combination with an engine of a governor provided with a drive shaft, a counter-shaft connected to the drive shaft, a friction disk fixed upon the engine shaft, a friction wheel carried by the counter-shaft and adjustable across the face of the disk, a main housing held in fixed position, and a supplemental housing pivotally supported upon the main housing carrying the countershaft and inclosing the friction wheel.

8. The combination with an engine of a governor provided with a drive shaft, a counter-shaft connected to the drive shaft, a friction disk fixed upon the engine shaft, a friction wheel carried by the counter-shaft and adjustable across the face of the disk, a main housing held in fixed position, a threaded shaft rotatably mounted on the main housing, a supplemental housing pivoted to swing about the axis of the threaded shaft and carrying the counter-shaft and in closing the friction wheel, and a threaded sleeve mounted on the threaded shaft and connected with the friction Wheel for adj ust ing the latter across the face of the friction CllSk.

VI-RGINIUS Z. CARAGRISTI. OLIVER D. H. BENTLEY. Witnesses:

M. C. M. HATCH, J. C. CHAPPLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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