US1148755A - Combined damper-regulator, relief-valve, gage, and alarm. - Google Patents

Description

L. A. CHERRY.

COMBINED DAMPER REGULATOR, RELIEF VALVE, GAGE, AND ALARM. APPLICATION FILED AUG.27, 1914.

1,148,755. Patented Aug. 3,1915.

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L. A. CHERRY. EEEEEEEEEEEEEEEEEEEEEEEEEEEEEE VALVE, GAGE, AND ALARM.

1,148,755. Patented Aug. 3, 1915.

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LESTER A. .ClI-IERRY, OF KEN-MORE, NEW YORK.

COMBINED DAMPER-REGULATOR, RELIEF-VALVE, GHG E, ALARM.

Specification of LettersPatent.

Patentedhngfg, {g g Application filed August 27, 1914. seriaiarasssgsss.

To all whom it may concern:

Be it known that I, .Lnsrnn A. CH RRY, a citizen of the United States, residing at Kenmore, in the county of Erieand State of New York, have invented a new and useful Combined Damper-Regulator, Belief-Valve, Gage, and Alarm, of which the following is V a specification.

My invention relates to improvements in damper-regulators for use 1n vapor heatingsystems, the principal objects of the. invention being eration of opening and closingthe dampers of the heating apparatus in accordance with the pressure within the system, and which is of such comparatively simple construction and arrangement as to be capable ofbeing cheaply and readily manufactured and applied and not at all likely to get impaired by use or out of working order.

Further "objects of the invention are to so construct and arrange the regulator as to cause it to serve as a gage for the pressure, an alarm when the pressure passes a predetermined point, and as an efficient reliefvalve that will positively blow-off at a predetermined pressure of vapor.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be particularly pointed out in 'the appended'claims.

Referring to the drawings-Figure 1 is a plan view of a combined damper-regulator, gage, alarm, and relief-valve, constructed in accordance with my invention. Fig. 2 is a Vertical sectional view of the same through the center. Fig. 3 is a front elevation of a fragment of the regulator showing the pressure-gage in front elevation. Fig. i is a similar view showing the pressure-gage in side elevation. Fig. 5 is an elevation of the upper portion of a round-type "of boiler showing my invention attached to the dome thereof.

Similar numerals of. reference indicate similar parts all the figures of the drawings.

an annular chamber 1, the wall of which at to produce a damper-regulator that will be positive and accurate in its op- I closed by the same.

In carrying out my invention, I employ midway its ends, as at therebymombining 'Wltl1;tll6 wall 2, to produce an annuilar sub- --stant1al1y U-shaped channel 13. The internal flange 3 is open at its upper end, which la'tterfis considerably below the upper end of the chamber 1, and over-said opening of the flange is an inverted bellshaped 6, the annular wall of which iswithin the before-mentioned U-s hapejd annular channel p 5 and upon whosebottom-it-rests. This diaphragm, therefore, .is of substantially the same depth as the internal annular flangeS, and serves to normally close the space in- The upper end 0f the chamber 1 -is closed by a cover, bolt Sfbeing employed for conwith a centrally located internally threaded 1 depending boss 11,, -:the outer surf'ace of which may be formed polygonal or angular to --adapt it to receive a Wrench. This boss, it will be understood, is by a pipe 12,-connected to the stealn-dome 13., of .a boiler 14. '(See Fig. -5.) A guide-bar '15.,spans thedepending :boss 11, at its upper end, and is held in position by bolts- 16. This guidebar is centrally perforated end-receives the :lower plain endof -a -rod 1 7 which extends upwardly through the opening 10 of the belLshaped diaphragm 6 and cover 7 escape-opening :9 of theisame, the latter opening being of considerably greater diameter than the rod 17. At a point above the guide-bar -1-5, the -rod 1'7 is threaded, and to rlend'to its stability, it may =a1lsopass through a :brace 18-, riveted at its ends to the arnder- :side 7 of the :bel l-shag aed diaphragm, from which it depends and having a perforation that receives said rod. Above andbelow the brace, nuts :1'9, m a'y lbs-mounted ofnthe rod. so as :to clamp the brace, and similar nuts 20, also be threaded on the rod unbove and below the top of thediaphragm and, in addition :to serving 'tohold the rod in proper relation to the diaphragm yalso serve to clamp upon washers '21, used to close the opening 10 in said diaphragm.

Located at the upper "end-of the rod 17,

' the bottom thereof, is a pipe-connection 35,5

' located the thechamber 1, being fulcrumed thereon by means of a transverse pin or pintle 27. Pinned to about the center of the lever 24, is a slotted block 28, and within the same is somewhat longer than the lever 24, and adjustably co'nnected to the latter by "a setscrew 30.- The damper operating lever 29 carries an adjustable Weight 31, which'may be secured in its adjusted positions by a setscrew 32, and at its front and rear ends said lever 29 is connected to damper- operat1ng chains 33 and 34,-respectively. The chain '33 leads to the usual draft-damper ofthe ash-pit of the furnace, while the chain 34 leadsto the usual checledamper in the smoke-pipe. See Fig. 5.) It will be understood, that in very large boilers, where the lever 29 would, therefore, have to be unreasonably long, the chain 34, instead of be ing connected to the rear end-of the lever, as shown in Fig. 2, may be connected to the front end of said lever'and' then carried upward and rearward over su-itablepulleys to a point where it could be dropped to and connected with the check-damper.

Communicating with and extending from the channel or well 5, of the chamber, and at the bottom of the chamber, at this point,

' wardly therefrom and perforated, while seated and secured in its vertical portion, by means of a packing and nut 39, is a gageglass 40, the'upper end of which is open.

Immediately above the extension 38 of the pipe-connection 35, the cover 7 of the chamher is likewise'extended, as at 41, and, like the extension 38, is perforated, ordinary guard-rods 42,depending through the same. Upon the gage-glass and capable of vertical adjustment with relation thereto, is a substantially U-shaped but horizontally dis- "posed gage-plate 43, the terminals of this plate being perforated to loosely receive the rods 42. Anadjusting-screw 44, is threaded in a suitableopening formed in the lower extension 38, and is disposed upwardly and supportsthe gage-plate 43, whereby, the latter maybe supported in any'of its adjusted positions. Immediately above the upper open end of the gage-glass is an electrical connection 45, from which leads a circuitwire 46, the latter being in electrical circuit with a suitable battery and buzzer or other style of alarm; The battery and alarm are damper-operating lever 29,

of the conventional style and are herein shown. The remaining battery terminal 47 may be connected at any convenient'point of the apparatus, of the plug '37.

This completes the construction of the apparatus, and the operation may be briefly described as follows: The U-shaped channel or well 5 is partially filled with a body of mercury, and when there is no pressure in the boiler, the parts occupy the position in which they are shown in Fig. 2, the height of the body of mercury being indicated by slottedfulcrum-block 2 6', and the fulcrum pin 27 such'vertical movement of the diaphragm being against the weight 31. By means of these connections and the guide the depending wall of the diaphragm is always maintained within the channel or well 5. The weight 31 is, of course,-adjusted in accordance with the degree 'of pressure at which the system is to be operated. This as for instance, at the bottom upward movement of the diaphragm, causes 4 a downward movement of the front end of the lever 29, and the chain '33, at that end of the lever lowers and either partially or wholly closes thedamper at the ash-pit of the furnace, thus cutting off or decreasing the supply of air to the fuel accordingly. having a drain 36', normally closed by a screw-plug 37. The pipe 35 is of L-shape,

and has an extension 38, extending for By this sameoperation, the rear end of the lever 29 is elevated, and, through the chain 34, lifts the check-damper in the smoke-pipe,

thus still further reducing the rateof combustion by a reduction of draft.- In this manner the operation of these two drafts serves to control thefire. In the event the pressure, for some reason, should not be controlled by the manipulation of these Further increase in pressure will now cause the steam within the diaphragm to force the mercury below the lower edge of the, diaphragm and thus escape thereunder 'up through the body of mercury within the" channel?) and outside of thediaphragm and from thence out through the escape-opening 9 after-which, the pressure having lowered, the mercury Wlll return to the position shown by dotted lines in Fig. 2. This affords a positive relief from any excess pressure and removes all danger.

Of course the pressure of steam within the diaphragm will cause the mercury in the gage-glass to rise correspondingly, so that the actual pressure of the boiler may be read thereon at any time. The adjustable scale behind the gage-glass is preferably graduated so as to show or indicate this pressure in ounces per square inch. When no pressure is on, the scale is adjusted up or down until the Zero of the scale is in alinement with the body of mercury in the gage-glass, the adjusting screw 44 being used for this purpose, the same being locked by means of a lock-nut @8. Any change in pressure may then be readily read from the scale. Suitably insulated, and extending downwardly from the electrical connection i5, within the upper open end of the gageglass, is a platinum wire or electrode 6&9, vertically adjustable by means of a milled nut 50, to and from the column of mercury within the glass. This electrode is, of course, adjusted at the proper height above the column of mercury, so that when the latter rises, said column and the electrode contact and complete the electric circuit and the buzzer, before mentioned, or other style of alarm-device is sounded.

From the foregoing description, it will be apparent that I have produced a most efficient and dependable draft-regulator, the construction being such as to render it capable of also serving as a safety-device and as an alarm.

It will be understood that I have herein merely described and illustrated the preferred form of construction, and that the same may be altered as to details without departing from the spirit or sacrificing the advantages of my invention.

Having described my invention, what I claim, is:

1. The combination with a steam-boiler, of a damper-regulator, the same comprising an annular chamber, having an escape-opening at its upper end and connected to the boiler, and having a vertically disposed internal annular flange of less depth than and combining with the wall of the chamber to form a shallow annular channel adapted to receive a body of mercury, an inverted bell-shaped diaphragm mounted over the internal flange, approximating the same in depth and having its side-wall depending into said channel, a rod extending upwardly Copies of this from the diaphragm and through and above the opening in the chamber, a lever fulcrumed upon the chamber and connected to the rod, and connecting chains between the lever and the dampers of the boiler.

2. The combination with a steam boiler, of a damper regulator, the same comprising an annular chamber, reduced at its lower end, at its bottom connected to the boiler,

and having an internal hollow flange out-.

wardly flared at its bottom and combining with the wall of the chamber to form an annular reduced guide-channel adapted to receive a body of mercury, an inverted bellshaped diaphragm mounted over the internal flange and approximating the same in depth and having its side-wall depending into said reduced guide-channel, a rod extending upwardly from the diaphragm and above the chamber, a lever fulcrumed on the chamber, an extension adjustably connected therewith, a weight adjustable on the extension, and chains leading from the extension to the dampers of the boiler.

3. The combination with a steam-boiler, of a damper regulator connected therewith, the same consisting of an annular closed chamber having a central escape-opening in its top and an inlet-opening in the bottom connected to the boiler, an internal annular flange rising from the bottom of less depth than the chamber and combining therewith to form an annular channel, a body of mercury therein, an inverted bellshaped diaphragm approximating in depth that of the annular flange and arranged over the same and having its side-wall depending into the channel, a perforated stay or brace depending from the underside of said diaphragm, a perforated guide over the inlet-opening in the bottom of the chamber, a rod extending through, above and below the top of the diaphragm and the stay or brace and through the guide, clamping-nuts on the rod above and below the diaphragm and the stay or brace, a weighted lever above the chamber, a pivotal connection between the same and the upper end of the rod, and chains leading from the weighted lever to the dampers of the boiler.

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

LESTER A. CHERRY.

Witnesses ROBERT N. CUNDALL, JAMEs J. PFEFFER.

patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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