US1411412A

US1411412A - Governor and indicator

Info

Publication number: US1411412A
Application number: US375143A
Authority: US
Inventors: Newton B Converse
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-04-19
Filing date: 1920-04-19
Publication date: 1922-04-04
Anticipated expiration: 1939-04-04

Description

N. B. CONVERSE. GOVERNOR AND INDICATOR.

APPLlCATlON FILED APR. l9| I920 Patented Apr. 4, 1922.

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NEWTON B. convnnsn, or sen 'rnnivc sco, CALIFORNIA, assrenon or ONE-HALF 'ro GEORGE '12. CAMERON, OF-SAN rnnncxsco, CALIFORNIA.

Goveams no) INDICATO 1,47 Application filedApril 19,

To all "IE/[OWL it may concern:

Be it known that I, NEWTON B. bonvinrsn, a cltlzen of the United States,-and'a resident of the city and county of San Francisco,

atively stationary device, directly proportional'to the rate of angular velocity of the rotating element, said movement being employed for any purpose such as governing, in which case it may be used to shift contact arms, valves and the like, or for the purpose of indicating or registering different angular rates of travel at different times.

By referring to the accompanying drawing my invention will be made clear.

Fig. 1 illustrates my invention ei'nployed with a well known type of indicator whereby the movement of the indicating arm or needle is in direct proportion to the rate of rotation of the governor head.

Throughout the drawings similar numerals refer to identical parts.

A casing is indicated by the inuneral 1 supported from the rotating member 2, ha ving a spindle 5, which latter is preferably made hollow and is carried by the ball bearings 3, 1, mounted in supports not shown. The spindle 5 is rotated in any well known way as by the pulley 6 and belt 7.

The casing 1 is provided with a cover plate 8, having the central bearing 9 bored and fitted with a fixed key which engages with the keyway 10 cut in the spindle 11. A rotating head 12 is fixed to the spindle 11 and carries hinged thereto a plurality of arms as 13, 14, having at their outer extremities weights 15, 16 respectively, which weights I prefer to mount on the said arms as by the pivots 17, 18, and which weights 15, 16 I prefer to carry on ball bearings mounted on the said pivots 17, 18. At 19 I have shown a spring normally under com- Sp'e'cific'ation of Letters Patent.

Patented Apr: 4,1922.

1920. Serial No. 375,143.

pression and carried between the bearing 9 and the headj12. I

At 20 I have shown a series of rings on the spindle 11. and which rii'igs inay be advantageously -cut such that theircross section is that of a properly shapedfgear tooth. The circular teeth cutare-adapted to engage with the pinion 21 carried on the pivot 21 such that the spindle 11 during its rotation does not rotate the pinion 21, unless during the said rotation of 11 there is an axial movement thereof, in which case, due to the said gear teeth 20 engaging the pinion 21, there will be a rotary movement of the pinion 21 and therefore of the arm and needle 23 in directproportion to the axial movement of 11, and will be indicated on the dial 22, which is to be suitably supported.

The inner surface of the casing 1, as at 25, is curved in such waythat during the travel of the weights 15, 16, radially on the curve 25, because of the centrifugal force generated by the revolution of'the spindle 5, the movement of the spindle 11 will be, directly proportional to any variation'in the speed of the spindle 5. The movement of the spindle 11 in the axial direction'will be occasioned by the weights 15, 16 traveling outwardly on the curved surface as the speed increases, and which will result in the pulling on the head 12 by the arms 13, 14 in the direction to further compress the spring 19. It will thus be seen that move-- ment of the needle 23 will be proportional to the stroke of the spindle 11, and the stroke of the spindle 11 will be in direct proportion to the speed changes of the pulley 6. v

The curved surface25 I construct as follows: Let the opposition to the axial move ment of spindle 11, whether by gravity or spring compression be represented by (w) (0/1,) (10 (10 (10,) for any successive unitsof spindle movement and let the sum of the mass in revolution and capable of moving radially be represented by (W);

w =WRN and R In which equations the only unknown quantities are R, R R R R and which values aretherefore readily obtainable and are plotted as the curve 25. r

I claim:

1. In speed mechanism a member mounted upon an axle and adapted to rotate and formed symmetrically about its axis of rotation, said member provided with a surface of revolution formed by a regular curve rotated about saidaxis, and a plurality of weights having links pivoted to a spindle and said weights mounted to bear upon said curved surface of revolution, a spindle axiallymovable with respect to said member, a spring normally under compression between said member and said spindle, and said member inclosing said weights, links a and spring.

2. Apparatus as set forth in claim 1 in combination with a device actuated by said spindle and in which the operating parts are proportioned to roduce movements in said device arithmetically proportional to the revolutions of said axle.

NEWTON B. CONVERSE.