US567366A - Edward thunderbolt - Google Patents

Description

(No Model.)

' E. THUNDERBOLT. GOVERNOR FOR REGULATING SPEED. OF MACHINERY.

N0. 567,366. Patented. Sept. 8; 1896.

UNITED STATES PATENT OEEIcE.

EDWARD THUNDEEBOLT, oE CARLTON, VICTORIA.

GOVERNOR FOR REGULATING SPEED OF MACHINERY.

SPECIFICATION forming part of Letters Patent N 0. 567,366, dated September 8, 1896.

Application filed July 10, 1896.

invented certain new and useful Improvements in Governors for Regulating the Speed of Machinery, of which the following is a specification.

This invention has been devised to provide improvements in connection with that class of machinery known as governors, that is to say, mechanism for regulating the supply of the motive fluid, gas, or electric current to engines and the like or for operating any approved mechanism for controlling or regulating the speed of machinery, and may be described as follows:

I employ one or more magnetic coils capable of controlling any desired voltage in electricity, attached and subject to the general circuit of an electric installation. I arrange such electromagnetic coil or coils to operate on the speed-regulatin g gear of machinery in the most approved manner under the varying circumstances on the different kinds of engines, such as electric-lighting engines, where the speed is so required to be regulated as to increase when the increased number of.

lights are switched on and, vice versa, to decrease with the reduced switching when lights are being turned off.

The magnetic coil is so arranged as to magnetically attract or operate a bar, rod, plate, or lever which is directly or indirectly in e11- gagement with either the motive'power supply or an intermediate mechanism employed for the purpose of controlling the said motivepower supply, such, for instance, as switches of an electric motor, or a throttle-valve of a steam-engine, or gas or oil supply to a gasengine or the like.

In some cases the magnetic coil may operate, as aforesaid, directly or indirectly upon break-gear for reducing the speed of an engine or other machinery.

In the accompanying drawings I have illustrated my invention as arranged to control the motive fluid of a steamengine to work an electric-light supply, and in which Figure 1 shows a general view of the apparatus in elevation, a part being shown in sec- $eria1N0. 598,778. (No model.)

tion. Figs. 2, 3, and 4t show side views of parts of the apparatus.

In the drawings,A represents a lever which has a fulcrum-standard A arranged to slide at its lower end on afixed beam B and at its upper end along the lever A. The said lever turns upon the pins The sliding standard A is secured in the desired position 011 the lever by means of the thumb-screws A The lever A has adjustably connected thereto a rod 0, which is linked to a vertical piston-rod O, carryinga piston 0 The rod Chas threaded sides and passes through a slotted portion of the lever A, in which a milled screw C is set to adjust said rod. The piston C is arranged to work within a cylinder D. This cylinder D is supported against the wall by a band R and has a number of V-shaped openings D, which form a comm'unication between such cylinder and an outer casing D The aforesaid piston is arranged to control in its movement the amount of opening from the outer casing D to the cylinder, and so regulate the inlet of fluid to such cylinder. A pipe is connected to the said casing at E, by which the steam from the boilers is conducted to the casing of cylinder D, while the cylinder has an outlet-pipe F to conduct such fluid to .the engine. The lever A has at its side opposite to that at which the fulcrum is placed a magnet-core G, such core being connected to the lever bylinked screwrods G G2 in the adjustable part G, by which the height of such core may be regulated. The core G is arranged to depend partially into a coil II. Said coil is secured upon a base-plate I, which rests upon a wall-bracket I. Terminals II II are attached to the baseplate to which the circuit-wires'are connected. The coil II is provided with a magnetic plug H for assisting to attract. the core Gand which has its distance from the core G adjustably arranged by the thumb-screw H and screwpin H set in the frame II.

A frame J (see Fig. 3) is attached to the fixed beam B and has a slot J, in whichthe lever A moves vertically, screws J 2 J 3 being provided to limit the travel of the said lever.

The lever A has a safety appliance c011- nected therewith, (see Figs 1 and 2,) which will automatically act to cause the piston O to close the ports D, and so stop the flow of motive fluid and instantly cause the engine or motor to cease running. The attachment consists of a spring K, which is secured to the lever A at one end and to a slotted frame K at the other end.

A pin L is arranged to project into this slotted frame and to form a hold on the spring K and lever attached when in its normal working. This pin L has an arm L, by which it is pivoted at L to a plate M, the plate M with the attachment L being adj ustably raised or lowered by the pin M and thumb-screws M on the fixed wall-bracket O. A vertical rod N is adjustably secured to the lever A and is arranged to engage with the proj eeting end of the pin L, its distance from such end being adjustable by the milled nut N.

The modus operandi of the invention may be described as follows: Assume the appliance to be connected up with the inlet-pipe E connected to the source of fluid supply and the pipe F controlling the engine. If the apparatus be at work and an additional number of lights be switched onto the circuit, it will immediately cause a decreased current to pass through the coil II, and consequently a less attractive force will be exerted on the core G, thus allowing the spring K to act to raise such core partially out of the coil, which action will raise one end of the lever A and with it the piston-rod G and piston attached, thus opening the V-shaped ports D in the cylinder D and allowing an inrush of steam or other motive fluid into the cylinder and through the pipe F to the engine. The speed of the engine will thereby be increased, so communicating to the dynamo an increased speed and consequent increase of electrical supply to maintain a greater number of lights on the circuit. In shutting off a number of lights a reverse action will take place, that is, the core G will be drawn down and with it the lever A, so lowering the piston C and proportionately closing the ports D.

If the current be suddenly cut oil? from the circuit, 45

the safety appliance will. come into operation, so as to prevent the racing away of the engine. The pull of the core G will then be relaxed and the spring K will cause same to jump up and with it the rod N, secured to the lever A, so causing said rod N to strike the pin L and cause it to turn on its center If, thus releasing its opposite end from engagement with the slotted frame K, which, now released, drops and with it the end of lever A, so causing the piston 0 connected to the le ver, to close the ports I) and thus stop the furthersupply of 'l'luid to the engine.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In governors for regulating the speed of machinery-the combination of an electro magnet as G, 11 adjustably secured to a lever as A having a sliding fulcrum-standard as A with apiston-rod as O, O adjustably secured to such lever and carrying a piston as C" which operates to open and close ports as l) in a cylinder as D such cylinder having an outer casing as D with inlet and outlet pipes as E and F substantially as and for the purposes set forth.

2. In governors for regulating the speed 013' machinery-the combination of a lever as A having a spring as K attached thereto at one end and at the other end to a slotted frame as K in combination with a pin as L, L centered upon an adjustable plate as M and a vertical rod as N adjustably connected with the lever A substantially as and for the purposes set forth.

Signed this lSth day of May, 1896.

EDIVARD TIIUNDE' tBOLl.

itnesses:

A. HARPER, 0. IV. \VADE.

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