US1075043A

US1075043A - Automatic boiler-feed regulator.

Info

Publication number: US1075043A
Application number: US64248911A
Authority: US
Inventors: William F Krichbaum
Original assignee: FOSTER ENGINEERING Co
Current assignee: FOSTER ENGINEERING Co
Priority date: 1911-08-05
Filing date: 1911-08-05
Publication date: 1913-10-07
Anticipated expiration: 1930-10-07

Description

W. F. KRIOHBAUM.

AUTOMATIO BOILER FEED REGULATOR.

APPLICATION FILED AUG.5, 1911.

Patented Oct. 7, 1913 3 SHEETS-SHEET 1.

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W. F. KRIOHBAUM. AUTOMATIU BOILER FEED REGULATOR. APPLICATION FILED AUG.5, 1911. 1975943; Patented 001:. 7, 1913.

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ATTORNEK W. 'F. KRIOHBAUM.

AUTOMATIC BOILER FEED REGULATOR.

APPLICATION FILED AUG.5, 1911.

Patented 0013. 7, 1913.

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COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

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WILLIAM F. KRICI-IBAUM, OF NEVIARK, NEW JERSEY, ASSIGNOR TO FOSTER ENGI- NEERING COMPANY, A CORPORATIGN OF NEW JERSEY.

fizUTOMATIC BOILER-FEED REGULATOR.

Specification of Letters Patent.

Patented Got. '2, 1913.

Application filed August 5, 1911. Serial No. 6%2/189.

To all whom it may concern Be it known that 1, WILLIAM F. Karon- BAUM, a citizen of the United States, residing at Newark, in the county of Essex and tate of New Jersey, have invented certain Improvements in Automatic Boiler-Feed Regulators, of which the following is a specification.

This invention relates more particularly to that class of automatic boiler feed regulators which operate thermostatically or by the expansion and contraction of a tube into which steam is admitted by the fall of water level in the boiler and from which it is exeluded by the rise of the water, thus maintaining the water at uniform height in said boiler.

T he objects of the invention are to provide such an automatic feed regulator which shall be very compact in form; to obtain a mechanism whic 1 shall avoid in its construction the employment of delicate or unreliable devices and arrangements, such as pilot valves, diaphragms, floats, springs, internal working parts and the like; to obtain a simple, strong construction, which shall be efficient in its working; to provide such a regulator which can be readily and easily 1 attached to a boiler, and to secure other. advantages and results as may be brought out in the following description.

in the accompanying drawings in which like numerals of reference indicate the same parts throughout the several figures, Figure 1 is a general view of my invention applied. to a typical boiler; Fig. 2 is a side elevation of the regulator alone; Fig. 3 is a rear view of the same; Fig. 4; is a central vertical longitudinal section taken through the upper cap and connections of the expansion tube, and Fig. 5 is a like section taken through the lower cap and connection of said tube to the boiler, and through the valve which said T expansion tube governs or regulates.

In said drawings, 1 indicates a tube made from any metal having a high coeflicient of expansion. The lower end of this tube, which stands in substantially vertical position, is threaded into a base 2, and said base preferably has a substantially horizontal extension 3 by which it is mounted upon the valve 4: which governs the flow of water through the feed pipe 5 to the boiler 6. In said base 2, and leading from the seat for the lower end of the expansion tube 1, is a hole or passage 7, and preferably said hole or passage opens through a boss 8 adapted to be connected, as by coupling and

piping

9, 10, to the water column 11 of the boiler at a low point thereof, or to the drain pipe 12 of said water column, so as to drain the expansion tube 1. The upper end of said expansion tube is threaded to screw into a cap 13, suitably provided with an outlet 14: adapted to be connected, as by piping 15, with the said water column 11 at that point of the height thereof at which it is desired for the water level to stand. I have shown this pointas at the middle gage, for purposes of illustration, but obviously it might be higher or lower, if desired. Upon the opposite sides of said cap 13 are laterally projecting

arms

16, 16 each carrying a vertical or substantially vertical slideway or sleeve 17 adapted to slidably receive a guide rod 18. The said guide rods 18, 1.8 are socurely fastened in the base 2, or lateral cars 19 thereof, and project upwardly parallel with one another and with the expansion tube, being connected at their upper ends by the yoke 20 at a point above the cap 13. From said yoke 20 a tongue 21 projects outwardly and downwardly in the same general direction as the base extension 3 and above the same, and provides a fulcrum for a bellcrank lever 22, the power or short substan tially horizontal. arm 23 of which rests on an adjustable stud 24 in the top of the cap 13 of the expansion tube. Said stud preferably is threaded for its lower end portion to screw into a socket 25 tapped in the top of the cap, a lock nut 26 serving to hold it fast when adjusted, and at its top the stud has an angular head 27 for turning, ending in a pointed tip 28 above said head.

Thework arm 29 of the bell crank 22 is long and projects downward adjacent to the expansion tube 1. At its lower end said lcng arm is pivotally attached to the power arm 30 of another bell crank 31 which is pivoted, as at 32, to a forked yoke 33 adjustably attached to the guide rods, 18, 18 by means of the split collars 345,3 1. The work arm 35 of said second bell crank 31 works in a slot 36 in the stem of the above mentioned valve 4, the outer end of said arm being properly weighted, as at 37, to normally seat said valve.

The operation of the device is as follows: Normally, the water in the boiler or water column 11 covers and seals the end of the pipe 15 leading to the top of the expansion tube 1, so that steam is excluded therefrom and the tube is cool or contracted. In this condition of the expansion tube, the long arm 29 of thebell crank lever 22 is free to swing outward from the expansion tube and allow the weight 37 to depress the arm 35 of the lower bell crank 31, so as to slide the valve proper of the valve 4 downward into closed posit-ion, as shown in Fig. 5. This prevents water from entering the boiler through the feed pipe 5. When the water gets low in the boiler, it uncovers the opening of the pipe 15 into the water column 11 and steam enters through said pipe 15 into the expansion tube 1, heating the same. Said tube 1 expands as it is heated, carrying its top cap 13 upward with the sleeve 17 sliding upon the rods 18, thus pressing upward against the short arm 23 of the bell crank lever 22 and swinging the long arm 29 inward at its lower end or toward the expansion tube in the drawings. This swings the lower bell crank lever 81 so as to raise the weight 37 and draw the valve proper of the valve 4: upward to open the same. Such opening of the valve 4 permits water to flow through the feed pipe 5 into the boiler 6 and obviously the flow continues until the steam is again shut off from the expansion tube 1 and said tube contracts sufficiently to close the valve 4.

Having thus described the invention, what I claim is:

1. In a boiler feed regulator, the combination of a base adapted to be secured to the boiler feed valve, an expansion tube projecting upward from said base, guide rods at opposite sides of said expansion tube, a cap for said expansion tube having arms slidably engaging said guide rods, a yoke connecting said guide rods above said cap, a bell-crank lever fulcrumed on said yoke with one arm extending between the guide rods transversely of the end of the expansion tube and adjacent thereto the other arm of the bell-crank projecting downward longitudinally of the expansion tube, a second yoke on said guide rods near the base, a second bell-crank fulcrumed on said yoke with one arm connected to said downwardly projecting arm of the first-mentioned bell-crank, and means for connecting the other arm of the second bell-crank to the boiler feed valve to open and close the same as the expansion tube varies in length.

2. In a boiler feed regulator, the combination of a base adapted to be secured to the boiler feed valve, an expansion tube projecting upward from said base, guide rods at opposite sides of said expansion tube, a cap for said expansion tube having arms slidably engaging said guide rods, a yoke con necting said guide rods above said cap, a

bell-crank lever fulcrumed on said yoke with one arm extending between the guide rods transversely of the end of the expansion tube and adjacent thereto the other arm of the bell-crank projecting downward longitudinally of the expansion tube, a second bell crank fulcrumed in fixed relation to the base adjacent thereto with one arm connected to the first-mentioned bell-crank, and means for connecting the other arm of the second bell-crank to the boiler feed valve to open and close the same as the expansion tube varies in length.

3. In a boiler lie-ed regulator, the combination of a base adapted to be secured to the boiler feed valve, an expansion tube projecting upward from said base, guide rods at opposite sides of said expansion tube, a cap for said expansion tube having arms slidably engaging said guide rods, a yoke connecting said guide rods above said cap, a bell-crank lever pivoted to said yoke with one arm extending between the guide rods transversely of the end of the expansion tube and adjacent thereto the other arm of the bell-crank projecting downward longitudinally of the expansion tube, and means for connecting said last-mentioned arm of the bell-crank to the boiler for the valve to open and close the same as the expansion tube varies in length.

at. In a boiler feed regulator, the combination of a base, an expansion tube projecting upward from said base, guide rods at opposite sides of said expansion tube, a cap for the expansion tube slidably engaging said guide rods, a bell-crank lever pivotally connected to said guide rods with one arm extending transversely of the end of the expansion tube adjacent thereto and the other arm projecting downward longitudinally of the expansion tube, and means for connect-- ing said last-mentioned arm of the lever to the boiler feed valve to open and close the same as the expansion tube varies in length.

5. In a boiler feed regulator, the combination with an expansion tube, and means for connecting said tube to a boiler at the normal water level therein, of a bell-crank lever having one arm extending transversely of said tube adj acent its end, a stud connected to said end ofthe expansion tube and adapted to be adjusted longitudinally of said tube by rotation, said stud having an extremity rotatably engaging the arm of the bell-crank lever so as to permit adjustment of the stud, means for connecting the other arm of the bell-crank lever to the boiler feed valve to open and close the same as the expansion tube varies in length, and means for supporting said parts.

6. In a boiler feed regulator, the combination with an expansion tube'and means for a socket for said tube, a drain tube extending downward from said socket, rods extending from said base longitudinally of said tube at opposite sides thereof, a closing cap on said tube having sleeves receiving said rods a yoke connecting the ends of said rods and having a tongue projecting laterally from the line of the tube, a bell crank lever fulcrumed on said tongue with a short arm extending across the said cap of said expansion tube and a long arm extending longitudinally of the tube, and means for connecting the end of said long arm to the boiler feed valve to open and close the same as the tube varies in length.

7. In a boiler fee-d regulator, the combination with a boiler feed pipe having a valve therein, of a base mounted on said feed pipe, an expansion tube seated in said base and connected to the boiler at normal Water-level therein, a drain for said expansion tube leading from said base, rods extending from said base longitudinally of said expansion tube on opposite sides thereof, a yoke connecting said rods and having a tongue projecting laterally from the line of the tube of the first class, a bell crank lever fulcrumed on said tongue with a short arm extending across the end of the expansion tube and a long arm extending longitudinally thereof toward the base, a second bell crank lever mounted on one edge of said base beneath the said tongue with one arm connected to said long arm and its other arm connected to the stem of the feed valve.

8. In a boiler feed regulator, the combination with a boiler feed pipe and a valve therein, of a base having an extension secured to said valve and supporting the base an expansion tube seated in said base an connected to the boiler at normal waterlevel therein, a drain for said expansion tube, a support on the base for said expansion tube, a bellcrank lever fulcrume-d on said support with a short arm extending over the end of said tube and a long arm extending longitudinally of said tube adjacent thereto, and means for connecting the lower end of said long arm to said valve to open and close the same as the expansion tube expands and contracts.

9. In a boiler feed regulator, the combination with an open-ended expansion tube, a feed pipe leading to said boiler, and a valve in said feed pipe, of a base fixed on said valve and having a socket for said expansion tube, a drain leading from said socket, rods extending upward from said base piece at opposite sides of said tube, a yoke connecting said rods above said tube, a bell-crank lever fulcrumed on said yoke with a short arm extending over the expansion tube and a long arm extending downward adjacent to said tube, a cap for the upper end of the expansion tube having means for connection to the boiler, adjustable means on said can adapted to engage said short arm, a lower bell-crank having one arm connected to said long arm of the upper bell-crank and its other arm engaging the valve stem, and a weight normally holding said valve closed.

WILLIAM F. KRICHBAUM.

In the presence of CORNELIUS ZABRISKIE, FRANoEs E. BLODGETT.

Copies of this patent ma be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.