US45522A - Improvement in governors - Google Patents

Description

j. TEM,

Izq' i N,PETERS. MU-UTHOGRAPMER. WASHINGTON. RC.

UNITED STATES PATENT OFFICE.

J.T. HIGH, OF RAHWTAY, NE\V JERSEY.

IMPROVEMENT IN GOVERNOPLS.

Specitieation forming part oi' Letters Patent No. 45,5252, dated December 2U, 1864; antedated December 14, 1864.

To all ir/tom it may concern:

Be it known that l, J. T. RICH, of Hallway, in the county of Union and State ot' New Jersey, have invented a new and Improved Gov ernor for SteanrEngines and other Motors; and I do hereby declare that the following is a t'ull, clear. and exact description ofthe same, reference being had to the accompanying drawings, formingpartot this i pecilication, in which- Figure l is a central vertical section ot' the frovernor. Fig. 2 is a horizontal section of tie same.

Similar letters ot' reference indicate corresponding parts in both ligures.

This invention consists in a spindle furV nished with spiral blades or4 wings rotating in a cylinder containing oil or other liquid, and a spring applied to the said spindle to press it longitudinally in one direction. Thepressure ot the faces of the blades againstthe liquid, produced by their revolution, tends to produce a longitudinal movement ot the spindle in the opposite direct-ion to thepressure ofthe spring, such tendency being greater or less, according` to the velocity ot' revolution, and the spindle being connected with the regulator ot' the engine or motor, its longitudinal movement is made the means ot' operating upon the regulator to govern the movement ot" the engine or motor.

To enab e others skilled in the art to make and apply my invention, l will proceed to describe its construction and operation.

`A is the cylinder containing the oil or other liquid, represented as being supported iu an upright'position by suitable standards, B, P. C is the rotating spindle passing` longitudi nally and centrally throughthe cylinder A. In the bottom ot' the cylinder, there is a stu llinghox, a, to prevent leakage of the oil or other liquid around the spindle, and on the t ip thereofis a guide, Z1, to keep the spindle upright. The said spindle is i'ree to move longitudinally, as well as rotate. l) l) are thespiral wings or blades firmly secured to the spindle (l. These wings or blades resemble those of a screw-propeller. On the lower part of the said spindle there is a bevel-gear, E, or pulley, to which to apply power from the engine or motor to produce its rotary motion. This hevelgear or pulley should be litted to the The lower end ot1 the said rod is to be connected with the throttle-valve or regulator in such manner that the upward movement of the spindle and rod will tend to reduce the speed ollthe engine or motor and the downward movement will produce an opposite effect. Above the center of the cylinder A there is placed the stationary spring-box F,

containing the spiral spring G, which surrounds the upper part of the rod d., and which presses upon the upper collar, c, of the said rod and so tends to depress the said rod and the spindle (l. The rotary motion given to the spindle C is in such direction that the pressure of the faces of the wings or blades l) upon the oil or other liquid in the cylinder tends to make the said blades rise and carry the spindle upward in opposition to the downward pressure ofthe spring G, which is of such strength that the upward and downward pressures upon the spindle balance each other when the regulator is in position to give the proper speed to the engine or motor with an average pressure of the steam or other motive agent, and an average lvad on the engine or motor.

W'hen the speed of the motor begins to increase, the increase of velocity of the rctary motion ofthe spindle and its bladescauses the blades and spindle to rise and so operate on the regulator as to reduce the supply of the motive agent in such degree as to restore the proper speed of the motor, and when the speed ofthe motor begins to decrease an opposite eli'ect is produced on the blades and spindle,and consequently upon the regulator, and theproper speed of the motor is restored.

rlhe governor, constructed as represented in .the drawings, with a, spring, G, may be arg ranged in a horizontal or inclined position, instead of in the vertical position represented,

I am aware that a governor operating on the same general principle as mine, but with a weight instead of a spring, is described in a patent granted to Henry Burt on the 31st of August, 1844.

The advantages I claim over Burts governor are, first, a compens ati ngspring to resist the pressure ot' the screw, which admits the operation of the governor at any speed, from the pivot-start until it has obtained its maximum number ot' revolutions, and prevents too sudden change of speed from injurious effects upon the engine; second, by the construction of my governor I am enabled to operate it in any position, which is a great advantage, especially for marine engines 5 third, in the transmission of motion from the screw-spindle to the throttle-valve the power is augmented, instead of reduced, as is the case with most governors. In my governor I have alift of from terr pounds, twelve inches, which is double the throw required for any throttle-valve, so that I can double, instead of reducing, power by means of levers, and so reduce friction and wear, besides absorbing only one-half the power for driving. I also can use my governor as aspeedindicator by attaching a pointer to the vertical stem, which passes through the spindle, and placing a table opposite with gures corresponding to the number of revolutions necessary to raise the spindle a given height. In fine, my governor is easily adjusted, substantial, runs light, and requires little power for driving purposes, and readily controls the throttle-valve, one of ordinary size having actual power of tive hundred pounds lift at the throttle.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the screw D, spindle C, and spring G, all arranged and operating as and for thc purposes specified.

JL'HN T. RICH. W'itnesses:

JAMES P. HALL, M. M. LIVINGSTON.

Images