US68964A - Henry - Google Patents

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HENRY O. DEMAREST, O-F Y NEW YORK, Letters Patent No. 68,964, dated September 17, 1867.

IMPROVEMENT IN BOITIER-FEEDERS.

Beit known that I, HENRY O. DEMAREST, of the city, count-y, and State of New York, have invented a new and useful Improvement in Automatic Boiler-Feeders; and I do hereby declare that the following is a full, clear, and exact description of the said invention, and of the construction and operation ot' the` same, so as to enable any person skilled in the art to make and construct thc same, referenccboing had` to the annexed drawings, making a part of t-his specification, of which drnwingsi Figure 1 is a front view of said machine.' Y

Figure 2 is a rear view of said machine.

Figure 3 is a top view of said machine. l i i Figure 4 is a view of the chambers and their connection with each other, one chamber `being removed to show in part the internal arrangement of said connection. p

Figure 5 is a view of two of the heads orsupports of said machine, the sides shown being those which are applied to the sides of said connection,

Figure 6 shows the internal arrangement of one of said heads `or supports.

Figure 7 shows the internal arrangement of the connection above mentioned.

In said drawings, A and A are two liollow chambers, of equal weight Vand suitable capacity, said chambers being connected by the hollow lever D, and also fastened to it,v Said chambers and lever are supported `by and oscillate on the axis G which passes through the heads E, E, and E, tlie weight of said chambers and lever being supported by E and E alone. Communication throughsaid lever Ais prevented `by apartition in thc latter, as represented by OO in tig. 7. D is said lever or connection. The 'ports or aperturesd d d dmtgo i through said lever, Vone on each side of said partition, and also communicate through said lever with each chamber, @Zand d with A, and dzand d with A. E, E', and E are heads or supports. E and E ai'e firmly attached to the bed-.plate which rests upon the boiler I. Into the front of Eenter thesteam pipe C and the water pipe B, which pipes pass through E, diverging into two branches (as represented in fig. 6) and opening out on the inside face of the head and near its top, at the ports 1 andB, B opening out at the'port 2,l `f lhese l i ports are sol constructed that when A is depressed the ports 1 and 2 in the head E are in the same line, and respectively communicate directly with the `ports d and d in the lever. When A is depressed the ports 2 and 3, in like manner,are in a line, and respectively communicate directlywith the ports cZ and d in said lever The port 4 in the head E communicates with apipe, (as represented in iig. 6,) which pipe leads, inside of said head, into said boiler to a lower depth than the steam pipe C. When A is depressed the said port is in a line and communicates directly with cl in the lever D, When'A is depressed saidrport is in alineand communicates directly with d. E is a. movable head attached to the bed-plate F by screws passing `through the slot 5, (as

Vin fig. 5,) and on the other side of the head through a similar slotfanld also by screws passing throughfthe holes 6 and 7, these lastnamed screws having the washers e', of a triangular form, with a rounding base, and playing freely therein and in the holes 6 andu'. e is a nut working upon threads in the axis G. i Around the axis,`and between the nut and the head E', is airing of India rubber or other elastic substance.V By this arrangement the closeness of the contact between the heads E and E and the lever D can belincreascd or diminished atpleasure, and leakage between the faces of the heads E and E( and the lever is prevented. The port 2 in the head E goes through the head and communicates wit-l1 the waste pipeB. It is so constructedthat when the chamber A' is depressed said port is in a line and communicates directly with the portal in the leverl), (but on the face of said leverl opposite to the face represented in figli.) 4When A'is depressed said port is in a line and communicates-directly with the port cl in said lever, but on said opposite face. The port 2 insaid head communicates with a pipo which empties into the boiler at a point lower than the orifice of the steam pipe C. vWhen the chamber A is depressed said port is in a line and communicates directly with d in the lever D. WhenAis depressed said port is in a line and communicates directly with clA in said lever. E is a head firmly attached to the bed-plate F, andwith E sustains the weight of said chambersand lever. pipe in the boiler'I communicating with the port 2 is flush, or nearly so, with theouter surface of the boiler. Over said pipe is a ringwhose inner circumference is larger than that'of the pipe. Said ring is sunkush into the bed-plate, and lea-kage is prevented by washers of India rubber or other elastic substances. Cris a steam-feed pipe, communicating 2 Y es, 96H

freely with the steam in the boiler whenever its lower orifice is above the surface'of .the Water, and is of such length that its lower extremity is at the level at which it is desired to'lreep lthe water. B is an injector oommunioating with the water-feed piperb. The-injector need not be used where a sufficient head of Water can be obtained, the water being fed to the machine by a pipein place of the injector. K is a rest which sustains either chamber when it is depressed. The springs L L, with the rollers attached, are so constructed and adjusted as to prevent-oscillation until the elevated chamber becomes heavier' than the depressedchamher by any given weight.

The operation of said machine is as follows: As soon as the water in the boiler is below the mouth of the steam pipe C steam passes through said p'ipe into the chamber whichat thatmoment is depressed. At the same time the stop-cock of the injector B (or of the Water pipe if the linjector is not used) should be turned, and thewater begins to enter the chamber which is elevated. Suppose A to be the chamber which is at this time depressed, then the steam from the boiler passes through the steam pipe (land the port 1 in the head E, and thence into the port d in the lever D, and thence 'nto the chamber A. The water in saidchamberthereupon passes through the port df in the lever D into the ports Llfand 2 in the heads E and'E, and thence through the corresponding pipes into the boiler. If no water at this time happens to be in the chamber A said chamber will till with steam from the steam pipe C. .In the-mean time water passes through theinjector, (or water pipe,) through the port 2 of the head E into the port d o t' the lever D, and thence into the chamberA. As soon as this chamber lls or becomes heavier than the chamber A it depresses itself, the port d'1. in the lever D comes into communication with the ports 4 and 2 in the heads E and E', and the water begins to discharge into the boiler. y The chamber A' being then elevated, ,it in turn fills with water passing through the port 2 inthehead E into the port d in the lever D. As soon as the water in the boiler. is above the mouth of the steam pipe C, the steambeing prevented from cnteringthe said pipe, the machine ceases to act. If, during the time the machine ceases to act, the injector (or Water pipe)` be not turned off, the water passes through the port 2 in the head E, through the port d or 'ol' in the lever D, as the ease may be, and through the port `2 in the head E into the waste pipe B. v

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

1. The'arrangementof the lever D, heaflsE and' E', and'washer ef, substantially upon the principle and in the manner herein set forth. V I

2. The arrangement of the chambers Arend A', lever D, heads E, E', and E", nut e, screws and washer e', discharge pipe, steam pipe'O, and the injector pipe B, constructed and`combined substantially as hereinabove set forth.

HENRY O. DEMAREST.

'Witnesses A. M. C'. SMITH, Jr., HENRY Basen.

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