US748223A - Governor-adjusting mechanism. - Google Patents

Description

No. 748,223. PATENT'ED DEC. 29, 1903.

LE GRAND SKINNER & J. O. GLENN.

GOVERNOR ADJUSTING MECHANISM.

APPLICATION FILED JAN. 20. 1903.

no MODEL.

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No. 748,223. Patented. December 29, 1903.

UNITED STATES PATENT OFFICE.

LE GRAND SKINNER AND JOHN C. GLENN, OF ERIE, PENNSYLVANIA; SAID i GLENN ASSIGNOR TO SAID SKINNER.

GOVERNOR-ADJUSTING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 748,223, dated December 29, 1903- Application filed January 20, 1903. Serial No. 139,835. (No model.)

T all wh m i may E 'W rangement of the parts thereof our inven- Be it known that we, LE GRAND SKINNER tion is equally applicable to other forms and and JOHN C. GLENN, citizens of the United types of centrifugal steam-engine governors. States, residing at Erie, in the county of Erie In the accompanying drawings,illustrating and State of Pennsylvania, have jointly inour invention, Figure 1 is a side view in elevented certain new and useful Improvements vation of a governor-wheel and centrifugal in Steam-Engine-Governor-Adjusting Mechgovernor with a mechanism embodying our anism; and. we do hereby declare the followinvention. Fig. 2 is a top or plan view of ing to be a full, clear, and exact description the same with a part of the wheel-rim broken :0 of the invention, such as will enable others away. skilled in the art to which it appertains to In the drawings, Ais an ordinarygovernormake and use the same, reference being had wheel; B, the governorrlever, C O, the govto the accompanying drawings, and to the leternor -weights, and D the governor-spring, ters of reference marked thereon, forming all of which are of usual construction.

15 part of this specification. On the arm A of the wheel A on a pivot e Our invention relates to improvements in we mount a lever E, in one end E of which steam -engine-governor-adjusting mechanthere is mounted a supplementary spring E, ism, and has for its object the construction the end -f of which is pivoted to links G, exand combination with an ordinary centrifutending to and pivoted to the governor- 20 gal governor for steam-engines of mechanism weight 0. Upon the arm A of the wheel A whereby such governor can be adjusted while we secure a reversible electric motor H, the engine is in operation, so as to increase which is geared to a screw-threaded shaft I, or diminish the speed of the engine, as demounted in bearings a on the wheel-arm A sired. and a on the inside of the rim of the Wheel 25 It is a matter of common knowledge that it A. Upon the screw-threaded shaft I there is has been found difficult to adjust the governa traveling nut J, from which links J exors of two or more engines when at rest, so tend to and are pivoted to the forked end 6 as to synchronize the speed of the engines of the lever E, so that the traverse of the when in operation, and that especial diffinut J on the shaft I moves the lever E on the 30 culty has existed in adjusting the governors pivot e, so as to produce a tension on the of two or more engines driving separate alspring F in one direction or the other, which ternating dynamos, so as to synchronize the thereby operates either to supplementthe govoperation of such dynamos driven thereby. ernor-spring D and increase the centripetal To overcome these difficulties, we have deforce exerted on the governor-weights or to 35 vised a mechanism adapted to be attached to diminish it,according to the direction the nut centrifugal governors of steam engines in J travels on the shaft I, and thereby adjust which we provide mechanism for varying the the governor for a greater or less speed of action of the governor and means for operatthe engine. ing such mechanism, so that the governor For operating the motor H insulated rings 40 may be adjusted while the engine is in oper- L are secured upon the hub A of the wheel 0 ation, so as to maintain a different speed of A, from which wires Z Z Z Z extend to the the engine from that which the governor brushes h h of the motor H in the usual manmaintains at its normal adjustment. ner, In the wires Z Z however, we provide In the description of our invention hereinspring-switches Z Z, and secured to the nut 45 after set forth we show and describe mechan- J we provide a rod K, which slides through a ism embodying our invention as applied to guide M on the arm A of the wheel A, so an ordinary and well-known type of centrifuthat the rod K travels back and forth in unigal steam-engine governor; but it will be disson with the nut J. On this sliding rod K tinctly understood that by mere mechanical there are two studs la is, which are adapted 5o modifications of the construction and arto engage the switches Z and Z and open 10o them when the but I completes its limit of traverse on the shaft I in either direction,

and thereby automatically stop the motor H.

Upon the journal-bearing box N of the wheel A we secure ordinary brush-holders 0, from which brushes 0 extend to and contact with the insulated rings L on the Wheel-hub A and from the brush-holders 0 wires P P P P lead to a reversing and cut-out switch (not shown) of usual and ordinary construction.

In operation whenever it is deemed necessary to increase the speed of the engine above or reduce it below that for which the governor is normally adjusted the operator can by means of the reversing-switch start the motor H in the proper direction to rotate the shaft I, so that the nut J thereon will travel in the direction necessary to produce the result desiredviz., the production of such a tension in the supplementary springF as will either increase or diminish the centripetal force exerted upon the governor, and thereby diminish or increase the speed of the engine, as may be desired.

It is obvious to those skilled in the art to which this invention appertains that the construction and arrangement of the parts of our mechanism can readily be modified, so as to be connected and combined with and operate to adjust any type of centrifugal governor without departing from the spirit of our invention.

Therefore, having described ourinvention, so as to enable others to construct and utilize the same, what we claim as new, and desire to secure by Letters Patent of the United States, is

1. In a governing device forsteam-engines, comprising substantially a rotating member having centrifugal weights mechanism, spring mechanism operating centripetally on the weight mechanism, and eccentric attachment mechanism mountedthereon, the combination therewith of an auxiliary spring connected with the governor-weight mechanism, and means on said rotating member for varying the tension of said auxiliary spring, substantially as and for the purpose set forth.

2. In agoverning device for steam-engines, comprising substantially a rotating member, having centrifugal weights, a main governorspring acting centripetally on the governorweights, and eccentric mechanism mounted therein, the combination therewith of an auxiliary spring connected with the governorweights, and motor mechanism mounted on the rotating member and connected with said auxiliary spring and operating thereon to vary its tension in either direction as desired, substantially as and for the purpose set forth.

3. In a governor device for steam-engines, comprising substantially a rotating member having centrifugally-actin-g weights, main governor-spring mechanism operating centripetally on the centrifugally-acting weights, and eccentric actuating mechanism mounted thereou,the combination therewith of an auxiliary spring mounted on said rotating member and connected with said centrifugallyacting weights, motor mechanism mounted on said rotating member and connected with said auxiliary spring, and acting thereon to vary its tension in either direction, and means for operating and controlling said motor mechanism from a point outside of the said rotating member, substantially as and for the purpose set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

LE GRAND SKINNER. JOHN C. GLENN.

Witnesses:

F. J. BASSETT, G. J. MEAD.

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