US2339272A - Gearing - Google Patents

Description

Jan. 1s, 1944 C. M. KNIGHT l-:TALY

@Emme Filed nay 24, 1941 2 Sheets-Sheet 1 Jan. 18, 1944. o. M. KNIGHT E'rAL GEARING Filed May 24, 1941 2 Sheets-Sheet 2 Patented Jan. 18, 1944 Y GEARING v .v Oliph M.'Knight, Chicago, Ill., and Warren C. Le

, Mire, Miamlf-Fla.; said Le Mire Frank J. Kraemer, Pottsvlle, Pa.

vassignor to Application May 2,4, 1941, Serial No. 395,083

4 Claims.

vehicle. l A further object of the invention is to provide a governor wherein adjusting means is employed for controlling response so that said lgovernor may be caused to operate at any desired speed of the shaft to which it is connected.

Still another object of the invention is to provide a speed controlling device of this character which is characterized by simplicity in construction and efficiency in operation.

And another object of the invention is to provide a governor which may be quickly attached to the intake manifold of an internal combustion Y engine.

StillV further objects of the invention will become apparent as the description thereof proceeds.

In the drawings forming a part of our appli- Figure 1 is a horizontal sectional view, partly in elevation, showing our improved governor as it would appear mounted on the vintake pipe or Vthroat of an internal combustion engine,

Figure 2 is a front elevation of the governor as it would appear in operative position, the cover plate being removed to show the rack and pinion and bracket construction, and

Figure 3 is an enlarged detail perspective view vof the bracket employed for supporting the free end of the rack;

In the drawings like numerals oiY reference designate like parts throughout the views. `The numeral I indicates the intake pipe or throat of an internal combustion engine. The pipe I,

y as shown, is of the type used in connection with a dual carburetor. However, it should be understood that the inventionis adapted for use with the intake pipes of single carburetors. Rotatably mounted in the pipe I is a transversely extending shaftl, said shaft extending diamet-v ricaliyof the `.intake openings .and 4 oi the pipe. .Mounted on the shaft within the intake -openings are butteriiy valves 5 and 6.

In carrying our invention into effect, we employ a housing I which is formed of cast metal or other suitable material.y The housing 'Ihas integrally formed thereon a reduced substantially rectangular extension 8, said extension being' formed with an end wall 9 and a rear wall I 0. The housing 1 also includes a hollow vcylindrical body II which is formed with an end wall I2, to `which the extension 8 is connected, and an end wall I3. The `end wall I2 is formed with an axial internally threaded opening I4 into which is screwed a bearing plug I5, said bearing plug being formed with a bearing recess I6. The end wall I3 is formed with an exteriorly threaded boss I'I and said boss is formed with an axial opening I8 in the inner end of which is mounted a bearing plug I9 having a bearing recess 20 therein. The opening I8 is alined with the opening I4 so that the recesses IIS and 20 Will also be alined. As best seen in dotted lines in Figure 2,y the body II of the housing 'I is formed with an opening 2|, the purpose of which is to permit ready observation or adjustment of the mechanism, to be described hereinafter, which is contained within said body. A cover plate 22 normally closes the opening 2l and is held in place by means of screws 23.

The rear wall I0 of the extension 8 of the housing 1 is formed, substantially medially of its length and height, with an opening 24 which receives the outer end of the shaft 2 therethrough, said shaft extending into the area of the said extension. A bushing 25 surrounds the shaft and extends into both the flattened surface of the pipe I and the flat .rear surface of the wall I0. Mounted on the outer end portion of the shaft 2 is a pinion 26, saidv pinion being held to rotate with said shaft by a nut 2'I. Normally closing the front of the extension is a removable cover plate 28, said plate being held in position by means of screws 29. Bolts extend through the rear wall I0 and operatively connect the device with the pipe I.V

Rotatably mounted within the body II of the housing 'I is a governor shaft 30. The shaft 30 is formed with a reduced outer end portion 3l which defines a conical bearing surface 32. The outer end portion 3l extends through the plug I9 and said bearing surface is engaged by a plurality of ball bearings 33 which are carried in the recess 20. A cap 34 surrounds the shaft 30 and closes the open end of said recess 2,0. As will be clearly seen in Figure 1, the reduced portion 3| of speed of rotation of the shaft for advancing said plunger and shifting the rack.

If, on the other hand, it is desired that the governor be held inoperative until after the shaft has been caused to rotate at a high rate of speed, the screw 13 is loosened and the guide and adjusting bracket is shifted toward the pinion 25 with the result that the spring 18 will be placed under greater tension. After this has been done, the lock nut 'I5 is loosened and the screw 14 is rotated until the end thereof again engages the wall S. The bolt 13 and the lock nut 15 are again tightened for locking the bracket in this position. When the spring is held under greater tension, the rack will be urged against the ball bearing 64 with enough tension to prevent advance of the plunger until after the shaft 30 has been caused to rotate at a predetermined high rate of speed. In other Words, the pressure of the cap 59 against the ball 44, which pressure is caused by the tension of the spring 13, will serve to overcome the centrifugal i'orce tending to swing the Weights 45 and 46 outwardly until the shaft 30 has been caused to rotate at a speed high enough for the centrifugal force to overcome the tension of said spring 'I8 when, of course, the plunger will be advanced against the tension of said spring for rotating the pinion and swinging the butterfly valves to closed position.

Our invention is characterized by the utmost simplicity in construction. Moreover, in View of the particular construction employed, it is thought that our improved governor would be highly efficient in use.

Although our invention is particularly adapted for use in conjunction with automobiles, it will lend itself for use with motor vehicles of all types.

Having thus described the invention, what is claimed as new is:

1. A governor including a housing having a side wall provided with an opening for introduction of a rotatable shaft carrying a pinion, a rack in the housing having teeth for meshing with the pinion and rotating the shaft when the rack is slid longitudinally, said rack having a guide portion, a stop washer on the guide portion of the rack, a cap on the opposite end of the rack, a plunger slidably mounted in the housing, a bracket in the housing having a guide lug slidably supporting the guide portion of the rack, a spring surrounding the guide portion between the lug and the stop washer and urging the rack longitudinally in a direction for engaging the cap with the plunger, and means in the housing for shifting the plunger, cap and rack against the tension of the spring for rocking the pinion and rotating the shaft.

2. A governor including a housing formed with an opening for introduction of a shaft carrying a pinion, a rack in said housing having teeth for meshing with the pinion and rotating the shaft, a bracket in said housing having a lug slidably supporting one end portion of said rack, said bracket being formed with a longitudinal slot, a screw passing through said slot and mounting and mounting the bracket for longitudinal adjustment, an abutment upon said rack, a spring about said rack engaging the abutment and said lug and yieldably resisting longitudinal movement of the rack in one direction, and means in said body for acting upon the other end of said rack and shifting the rack longitudinally in opposition to the action of said spring.

3. A governor including a, housing formed with an opening for introduction of a shaft carrying a pinion, a bracket in said housing formed with a longitudinally extending slot and having a laterally extending perforated lug and a laterally extending arm formed with a threaded opening, a screw passing through said slot and securing said bracket in adjusted position, a, rack in said housing having teeth for meshing With the pinion and rotating the shaft when the rack is shifted longitudinally, a spring about said rack for yieldably resisting movement of the rack longitudinally in one direction having one end abutting said lug, a screw threaded through the opening of said arm for engaging a confronting portion of the housing and shifting the bracket to adjusted position, and means in said housing for acting lon said rack and shifting the rack longitudinally in opposition to action of said spring.

4. A governor including a housing formed with an opening for introduction of a shaft carrying a pinion, a rack in said housing having teeth for meshing with the pinion and rotating the shaft, a bracket in said housing having a lug slidably supporting one end portion of said rack, said bracket being formed with a longitudinal slot, a screw passing through said slot and mounting the bracket for longitudinal adjustment, an abutment upon said rack, a spring about said rack engaging the abutment and said lug and yieldably resisting longitudinal movement of the rack in one directioma second bracket in said housing disposed vertically and formed with a vertical slot, a roller carried by the second bracket and engaged under said rack to support the rack, a screw passed through the slot of the second bracket to secure the same in a vertically adjusted position with the roller in supporting engagement with the rack, and means in said housing for acting on an end of said rack and shifting the rack longitudinally on opposition to the spring to rotate the pinion and shaft.

OLIPI-I M. KNIGHT. WARREN C. LE MIRE.

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