US 740515 A
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- PA'EBN TED 061?. 6, 1903.
13., BENSON, FLOAT VALVE. APP'LIGATIOH rum) mm: 2. 1903.
INVENTOH UNITED STATES IPatented October 6, 1903.
PATE T OFFICE.
' SPECIFICATTON forming part of Letters PatentNo. 740,515, dated October 6, 1903.
' Application filed June 2,1903. $erial1l'0. 159,746. (No model-l To all whom it mag concern:
Be it known that I, EGBERT BENSON, a citizen of the United States, residing in the bor ough of Brooklyn, in the city and. State of New York, have invented a certain new and useful Improvement in Float-Valves, of which the following is a specification.
My mechanism is eminently simple. Lextend the induction-pipe upward and again downward Within the tank and equip the open end of the'descending arm to serve as the seat. I use an open-bottomed float connected bythree straight vertical wires which play up and down through brackets in the I appear.
I bring the induction-pipe A upward through the bottom of the tank M, closing it tightly by nuts B and washers O capable of being tightly adjusted. The pipe, either continuously, or it may be a separate piece tightly joined, if preferred, extends upward, as indicated by A, describes a smooth bend A and extends downward again, as indicated by A opening into the tank only a little above the bottom. The lower open end of A is smoothly finished to form a valve-seat. On the descending part A are shrunk or otherwise firmly set two brackets A A each perforated at three points to receive and loosely guide three straight upright wires D. On
each wire is a stop-collar D, adapted to rest on the uppermost bracket A Above this the wire extends outward and 'is flattened and properly bent to apply smoothly against the inner face and riveted to a slightly-tapering open-bottomed float G. This float, as it Fig. 2 is a horizontal section. on the line 2 2 in Fig. 1.
float may be varied within wide limits.
has no motion except a direct rising-and-sink ing movement, may have any dimensions required within the area of the tank. I prefer that it shall be large enough to inclose the ascending part A, as well as the curve A and the descending part A of the inductionpipe, and that its lower end shallextend downward considerably below the curve A E is a sufficiently-stout horizontal plate of metal, to which the lower ends of the wires D are firmly fixed by riveting, and E is aswell in the center of the upper face adapted to enter the open mouth of the pipe A and guide the valve correctly to its seat. The parts should be fitted with a little play to allow of this. The base of the swell E is contracted to form an annular retainingroove,
into which I shrink a washer F, of soft rubber. This makes a tight contact'when the float G rises and draws the valve up against its seat. The rubber clings in the groove around the base of the swell, so that even if there is from any cause a'little adhesion the rubber is sure to move downward with the valve when the float sinks and elfect the proper opening, conditioned to be again tightly closed when the rise of the water shall again lift the directly-moving float and the correspondinglyrnoving valve.
-One advantage due to the open bottom of my floatis the'faciiity it aifords for filling with airloy supplying it from below by'plunging and tilting an inverted cup. This may bedon'e any time if there is a suspicion that the-float has leaked or if for any reason the float shall not be sufficiently buoyant.
Modifications may be made without departing from the principle or sacrificing the advantages of the invention. The form of the may be nearly the size and correspond in form to the whole of the interior of the tank. A swell corresponding to E and set in the center of a metal plate corresponding to E may be made in separate pieces and attached by screw-threading. In such case the rubber which forms the seat for the valve may be confined very positively by screwing down the swell. Fig. 3 shows such modification.
Instead of three of the vertical wires two may serve, or even a larger number than three may be used, taking care to provide float G and the Wires D connecting such float to a rigid plate E having a swell E and yielding washer F, adapted to constitute a selfyielding and close-fitting valve, arranged for joint operation substantially as herein specified.
In testimony that I claim the invention above set forth I aflix my signature in presence of two witnesses.
THOMAS DREW STETsoN, M. F. BOYLE.