US717918A - Electrical regulator. - Google Patents

Description

'No. 717,918. PATENTBD JAN. 6, 1903.

G. P. PHILBRIGK. ELBGTRIGAL REGULATOR APPLICATION FILED JUNE 13, 1902. N0 MODEL.

wmvsss.- INVENTOR CZaI-ZeJZU h'ZhZZ/Z' i/mam B) ATTORNEYS.

THE NORRIS vz'raas co. mom-umu mum-010w a c.

CFFICE.

CHARLES PIERSON PHILBRICK, OF WYMORE, NEBRASKA, ASSIGNOR OF ONE-HALF TO JOHN-A. REULING, OF WYMORE, NEBRASKA.

ELECTRICAL REGULATOR.

SPECIFICATION forming part of Letters Patent No. 717,918, dated January 6, 1903.

Application filed June 13,1902.

To aZZ whom, it may concern:

Be it known that I, CHARLES PIERSON PHIL- BRIOK, a citizen of the United States, and a resident of VVymore, in the county of Gage and State of Nebraska, have invented a new and Improved Electrical Regulator, of which the following is a full, clear, and exact description. I

My invention relates to pressure-controlled electric mechanism for regulating the flow of fuel to a furnace located beneath a boiler.

Referenceis to be had to the accompanying drawing, forming a part of this specification, in which the figure represents my invention as applied to a steam-boiler energized by liquid fuel.

The boiler 1 is provided with a pressure-motorconsistingofa casing 2,provided with a diaphragm 3,upon which diaphragm is mounted a movable plunger 4, provided with a point 5, the arrangement being such that variationsin the pressure of the boiler produce corresponding variations in the position of the point 5. The outer end of the casing 2 is rigidly secured to the frame 6, and through this frame the plunger 4 is free to move longitudinally when actuated by the diaphragm. Upon a pivot 7, supported by a bracket 9, is mounted a bell-crank lever 8, connected by a spring with the frame 6. An adjusting-screw 11, provided with a clamping-nut 12, forms the intermediate connection between the spring 10 and the bell-crank lever. Upon the free end of the bell-crank leveris a somewhat similar adjustingscrew 13, provided with a thumb-nut 14. The screw 13 engages an electrode 15, having the form of a leaf-spring and pivoted at 16 upon an insulating-bracket 17, secured by means of a screw 18 upon the rod 19 of the frame 6. This insulating-bracket 17 may be removed from the rod 19 by removing the screw 20.

The free end of the leaf-spring is provided with a contact 21, preferably of platinum, which engages a contact-screw 22, also preferably of platinum, this screw being adjustable by means of a thumb-nut 23. A battery 24 is provided with wires 25 26, leading to binding-screws 27 and 29. Bindingscrews 28 and are connected bya wire 29.

are No. 111,495. (No inodel.)

The binding-screws 29 and 30 are mounted upon a block 31.

' The post 19 is insulated from the frame 6, but is electrically connected with the binding-post 2S.

A hollow casing 32 is closed by a disk 33, from which projects a stem 34'for supporting the block 31. The outer end of this stem is threaded at 34 and is engaged by a thumbnut 35, the arrangement being such that the thumb -nnt 35 by pulling upon the rod 34 clamps the magnets 36 firmly between the disk 33 and the block 31. In order to remove the magnets, therefore, it is necessary to loosen the thumb-nut 35.

Within the casing 32 is a disk-shaped armature 37, mounted upon the end of a stem 38. A plate 39, provided with a channel 40,is secured upon a supplypipe 41, leading to the tank or other reservoir containing the liquid fuel. This plate contains another channel 42, connected with a pipe 43, leading to the furnace for the purpose of supplying liquid fuel thereto. Within the plate is a substantially conical aperture 44, and within this aperture a valve is normally free to play. A guide 46 is provided with an aperture 47, into which the stem 38 loosely projects, as indicated in the upper part of the figure. The bell-crank lever S is connected by means of a coil spring wire 48 with the leaf-spring 15, and this spring is in turn supported by another leafspring 49, which rests loosely upon the insulation 50. The post 19 is insulated from the frame 6 by means of the-insulation 51.

Normally the liquid fuel flows through the The electric circuit is as follows: battery 24, Wire 25, binding-post 27, frame 6, bellcrank lever 8, screw 13, leaf-spring 15, con- Ioo tacts 21 22, binding-post 28, wire 29, binding-post 30, magnets 36, binding-post 29, wire 26, and battery 24:.

The operation of my device is as follows: Suppose that the machinery is in operation and that the boiler 1 is carrying a normal pressure of, say, one hundred and forty pounds per square inch. Suppose, further, that the flow of the fuel is a little too free and that the boiler thereby becomes' heated a little above its normal temperature. The resulting increase of pressure causes the diaphragm 3 to move slightly to the left, beyond its normal position, thereby actuating the bell-crank lever 8 and causing the leaf-spring 15 to bend slightly, thereby bringing the contacts 21 22 together. The battery 2i themupon immediately energizes the magnet, which draws the armature 37, seats the valve 4-5, and checks the flow of fuel, thereby gradually checking the heat of the boiler and causing the pressure of the boiler to drop down to its normal degree.

It should be noted that the bell-crank lever 8 is adjustable relatively to the leaf-spring by means of the screw 13 and thumb-nut 14 and that the contact-point 22 is also adjustable relatively to the contact-point2l upon the outer end of the leaf-spring. The bell-crank lever and the leaf-spring therefore together constitute a sort of compound lever, in which great sensitiveness and great adaptability can be attained.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. An electric regulator, com prisinga boiler,

a member for controlling the fuel-supply thereof, a magnet for actuating said member, a pressure-motor connected with said boiler and actuated by pressure therefrom, a source of electricity, a contact connected with said magnet and with said source of electricity, said contact being normally open, and a bellcrank lever provided with an adj usting-screw for engaging said contact and connected with said pressure-motor.

2. An electricregulator,com prising a boiler, a member for controlling the fuel supply thereof, a magnet for actuating said member, a pressure-motor connected with said boiler and actuated by pressure therefrom, a source of electricity connected with said magnet, a contact connected with said magnet and with said source of electricity, means for adjusting said contact, a bell-crank lever provided with a screw for engaging said contact, means for adjusting said screw relatively to said contact, and a spring for normally compressing said lever against said pressure-motor, causing said lever to be actuated thereby.

3. An electric regulator,com prising a boiler, a member for controlling the fuel supply thereof, a magnet for actuating said member, a pressure-motor connected with said boiler and actuated by pressure therefrom, a source of electricity connected with said magnet, a contact connected with said magnet and with said source of electricity, said contact being provided with a lever, a second lever connected with said pressure-motor and with said last-mentioned lever, said two levers acting together as a compound lever, thereby increasing the sensitiveness of said contact, and means for adjusting said levers relatively to each other.

4:. An electric regulator,comprisinga boiler, a member for controlling the fuel supply thereof, a magnet for actuating said member, a pressure-motor connected with said boiler and actuated by pressure therefrom, a source of electricity connected with said magnet, a contact connected with said magnet and with said source of electricity, said contact being provided with a lover, a second lever connected with said pressure-motorand with said first-mentioned lever, thus forming a compound lever for the purpose of increasing the sensitiveness of said contact, and means for adjusting said contact relatively to said levers.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES PIERSON PHILBRIGK.

Witnesses:

E. J. GILLEsPIE, G. W. HARPSTER.

Images