US1377551A - Automatic governor - Google Patents

Description

W. E. BLAINE.

AUTOMATIC \GOVERNOR.

APPLICATION FILED DEC. 6, 1918 1 377 551 0 Patented; M y 1921.

' 3 SHEETS--SHEEY 1.

7'0 T/MWTTLE W. E. BLAINE.

' AUTOMATIC GOVERNOR.

APPLlCATlON FILED DEC. 6,1918v 1,377,551. Patented May 10, 1921.

3 SHEETS-SHEET 2.

W. E. BLAINE. AUTOMATIC GOVERNOR.

APPLICATION FILED DEC. 6 1913 1,377,551. Patented y10,1921.

3 SHEETSSHEET 3 uuu uw wm ED AT PATENT OFFICE.

wALrnnn. BLAINE, or THE UNITED STATES ARMY.

su'ro nnrro GOVERNOR.

- Specification of Letters Patent.

Patented May 10, 1921.

To all 'wkomit may concern:

Be it known that I, WALTER E. BLAINE, captain, Ordnance Dept, United States Army, a citizen of the .United States, stationed at Washington, D. C., have invented an Improvement in Automatic Governors, of which the following is a specification.

The invention described herein may be used by the Government, or any of itsoflicers or employees in prosecution of work for the Government, or by any other person in the United States, without payment of any roy alty thereon.

My invention relates to a new and useful improvement in automatic governors that are adapted for use with hydrocarbon or gas.

engines and that may be set so that when the engine reaches a certain predetermined speed the throttle of the carbureter will be automatically actuated to out down the supply or as. g One of the objects of my invention is to provide an automatic governor that is connected directly to the crank shaft of the engine and also connected to the carburetor.

throttle, and wherein a tension member is so connected with the governor that when the crank shaft reaches a certain number of revolutions the tension will be overcome and the carbureter throttle will be closed or cut down thereby preventing the crank shaft from reaching a greater number of revolutions than desired.

Another object of my invention is to provide an automatic governor that may be regulated with great accuracy so that the speed of the motor maybe predetermined to a fine degree between a maxlmum and minimum number of revolutions. v

Another object of'my invention is to provide an automatic governor consisting of but few parts which may be readily assembled or replaced they have become damaged in service.

Another object of my invention is to pro vide an automatic governor operatedi-by cen trifugal force, this force being in acertain fixed relation with a tension member so that if a high speed is desired, the tension will be so set a great amount will havete be overcome which of course necessitates "the crank shaft traveling at a high rate of speed before centrifugal force is greater than th t exerted by the tension memb r and on crank lever i the other hand when a low rate of speed is desired the tension member will be set so that only a relatively small amount will have to be overcome by the centrifugal force.

' With these and other objects in view, my invention consists of certain new and novel construction and combination of parts as will be hereinafter more fully described and pointed out in the claims- In the drawings-- Figure l is aside elevation showing the governor and part of the control as attached to a partitionor dashboard.

Fig. 2 is'a front elevation of the same. "Fig. 3 is a longitudinal sectional View of the automatic governor and a fragmentary portion of the engine casing.

Fig. 4 is a sectional detail view showing particularly the arrangement and location of the yoke and parts operating in conjunction therewith. l

Fig. 5 is a fragmentary plan of a portion of the casing and governor cup and balls with some of the parts removed for the sake of clearness.

. Fig. v6 is a' perspective of the yoke employed in the governor.

Fig. 7 is a fragmentary perspective of the governor ball cup.

Fig. 8 is a view in elevation showing a portion of a tension governor mechanism and a portion of a throttle rod; and

Fig. 9 is a similar view with the spring removed. v

Referring now to the drawings and at first to the tension member and the parts that are connected to said tension member to regulate the same there is shown a portion of the frame 1 and a partition 2 to which is secured a bracket 3 in which ispivoted the bell crank lever 4%. An adjusting rod 5 passes through the partition 2 and is connected as at 6, to one end of the belt crank 4, and to the other end of this rod 5 is connected any desirable means for holding this rod to the position that it is pushed outwardly to, or to the position that it is pulled inwardly to. in other words, a quadrant or friction member or any form or means may be connected to the rod 5 for holding the rod in a set position.

"Connected to the other end of the bell is a connecting rod 7 which is provided with a yoke 8 and bolt 9, and

through this yoke is passed the spring arms 10 which are to be turned at their lower ends as at 11. Extending upwardly between these arms is another rod 12 which is provided with an enlarged head 13 and a cap 14 encircles the arms 10 and fits under the enlarged head 13. A lower cap 15 is supported by the ends 11 of the rod 10 and interposed between the two caps is the spring 16. The rod 12 is screwed in a socket member 17 which socket member is pivoted at its lower end to a regulating arm 18, which arm is also provided at its outer end with a similar socket 17 to which is threaded the rod 20, which in turn is connected to a rod '21 which extends to the throttle of a carbureter, or other line of potential power supply to a motor.

It'will be seen, therefore, that by pulling the rod 5 inwardly the rod 7 will be pulled upwardly which in turn will compress the spring 16 against the cap 14 and the head 13 of the rod 12. On the other hand, when the rod 5 is pushed outwardly, the rod 7 will be forced downwardly forcing the ends 11 also downwardly releasing the compression between the cap 15 and'the cap 14 and head 13.

Referring now to the governor mechanism that cooperates with the aforementioned parts, and to which the regulating arm 18 is connected, it will be noticed that it consists of a casing divided into two parts 22 that may be suitably bolted or otherwise fastened together. Extending through the casing is a main shaft 23 and to one end of the same is the clutch member 24 which is secured by the nut 26 threaded on the end of the main shaft. This clutch member is provided with two sets of teeth 27 so that chains 28 and 29 may be provided to drive a ventilator and radiator fan. Another function of the clutch 24 is that it is turned with a or-ankwhen desired to start the motor or engine.

The other end of the shaft 23 is suitably splined to the crank shaft of the motor with which the governor is to be used. The two parts of the casing 22 may be used for strength and lightness as desired and one of the walls 30 is flared or rounded to provide room for a cup 31, in which are located the four governor balls 32 which are spaced by four compartments or walls 33. Secured on the main shaft 23 is the sleeve on which the aforementioned balls rest, which sleeve is enlarged at one end as at 35. The cup has the collar which is rigidly secured to the shaft 23 and the walls 37 of this cup are angularly positioned as clearly seen in 3, so that as the shaft 23 is revolved the balls will ride outwardly and forwardly on account of the centrifugal force exerted upon them. Resting on the sleeve and in contact with the governor balls 32 is the d cular plate 38 which is reduced as at 39 to receive-the ball race 40 which latter in turn contacts with the collar or plate 41 provided with the outwardly extending flange portion 42 which contacts withthe projecting arms or lugs 43 carried by the yoke 44. This yoke 44 has the trunnion 45 which is rotatably positioned in a bearing 46 in the casing, and the other trunnion 47 which is likewise held in the bearing 48, the outer end 49 of the trunnion having the regulating arm 18, heretofore referred to, clamped thereto. A ball bearing 50 is positioned in one end of the casing to support the shaft 23 and a collar is secured on the shaft 23 to bear against this ball bearing. This collar may be fastened to the clutch member and shaft 23 in any suitable manner It will be understood that as the shaft 23 revolves the governor balls 31 will be forced outwardly in turn forcing the flange portion 42 against the outstanding lugs or projections on the yoke which will thereby tilt the same forcing the lever '18 downwardly, the amount of'movement depending upon the distance that the balls are-forced up the angular walls 37 The operation of the whole device is as follows:

Supposing, for example, that it takes a force of 40 pounds toovercome the compression of the spring 16 when it is fully compressed and it is known that the governor balls will not overcome this compression until the crank shaft is turning at the rate of 1400 revolutions a minute. The rod 5 would therefore be pulled inwardly the full distance and locked. The rod 7 will thus be pulled upwardly by the bell-crank 4, which in turn will compress the spring 16. The engine will then be started, and as the crank shaft 23 revolves the governor balls will be thrown outwardly in turn forcing the flange portion 42 against the projecting lugs of the yoke, and by the time the crank shaft of the engine has reached the 1400 revolutions the pressure will overcome that of the spring 16 and force the arm 18 downwardly until said pressures balance, which in turn will cut off the flow through the throttle of the carbureter sufficiently to permit the engine to run at this number of revolutions without going above same. The amount of compression of the spring 16 will be regulated by the amount the rod 5 1s pulled inwardly or pushed outwardly, and,

of course, if the compression of the spring 16 is set for less than that taken for example,

a lesser force will be needed to overcome governor may be regulated to cut off at any point between a maximum and minimum number of revolutions. By providing the sockets 17 and 17 slight adjustments may be made with relation to the carbureter throttle and to the spring 16 and its parts.

From the foregoing it will be seen that I have an automatic governor and tension means that is capable of automatically regulating the speed of the engine, it being only necessary to regulate the tension member, and it being remembered that the greater the tension, the higher the rate of speed before the governor will operate.

Having thus described my invention, what I claim as new and desire to secure by. Letters Patent is:

1. In an automatic governor, the combination with a manual control and a throttle connection, of a casing, a shaft mounted in said casing, a centrifugal governor carried by said shaft, a shifting member operated by said centrifugal governor, a yoke disposed in the casing and moved by the action of said shifting member and having trunnions mounted in said casing, and a connection with one of said trunnions op-' erating in conjunction with the manual control and with the said throttle connection.

2. In an automatic governer, the combination of a casing, a shaft mounted in said casing and connected With the crank shaft of the engine, a governor mechanism mounted on said shaft, a shifting mechanism operated by said governor, a pivoted member operated by said shifting member and provided with trunnions, one of said trunnions projecting beyond the casing, an arm secured to said projecting trunnion, manually controlled tension means connected to said arm, and a throttle connection also connected to said arm.

3. In an automatic governor, the combination of a casing, a main shaft in said casing, a governor mechanism on said shaft, a pivoted yoke having its yoke portion in the path of movement of said governor, trunnions on said yoke one of them extending beyond the casing and a connection With said extended trunnion for controlling a throttle by the movement of said yoke.

4. In an automatic governor, the combination of a casing, an engine operating shaft therein, a centrifugal governor mechanism on said shaft, a shifting member operated by said centrifugal governor mechanism, a yoke having trunnions mounted in said casing, a throttle connection and connections with one of said trunnions for regulating the movement of said yoke and said throttle connection.

5. In an automatic governor, the combination of a casing, a shaft mounted in said casing for connection with the crank shaft of an engine, a governor mechanism carried by said shaft, a shifting member on said shaft operated by said governor mechanism, a yoke having trunnions pivoted in said casing, an arm connected to one of said trunnions, an adjustable spring manually controlled regulating device connected to said arm, and a throttle operating means also connected to said arm.

6. In an automatic governor, the combination of a casing, a power shaft, a governor mechanism, a shifting mechanism operated by said governor mechanism, a yoke having engagement with and moved by said shifting mechanism and having trunnions mounted in the casing, an arm connected to one of said trunnions, an adjustable spring tension mechanism having connection with said arm, manually controlled means-for operating and adjusting said tension mechanism, and a throttle operating connectio also secured to and operated by the move ment of said arm.

ll/ALTER E. BLAINE.

Images