USRE3341E - Improvement in stop-cocks - Google Patents

Description

UNITED SirATI-:sL PATENT OFFICE. 'I

ERASTUS STEBBINS, OF L-HICOPEE, MASSACHUSETTS.

IMPROVEMENT lN STOP-COCKSt Spcclication forming part 0f Letters Patent No. 23,721, dated April 19, 1859; Reissue No. SGB, dated December 20, l859 Reissue No. 3,311, dated March 23, 1869.

. To all whom it may concern i the seat for the valve L. This valve plays in Be it known that l, EnAs'rUs STEBBINS, of l a chamber,S, formed by the neck of the faucet, Ohicopee, in the county of Hampden and Gomi and it is made as a nut, or with an interior monwealth of Massachusetts, have invented screw-thread,intowhich worksa screw-thread, certa-in new and useful Improvements in Cocks F, formed on the lower end ofthe valve-oper- :t'or Fluids; and I do hereby declare that the ating spindle C, which spindle may be surfollowingisa full and exact descriptionthereof, mounted by a handle, D, as seen in the drawrefercnce being had to the accompanying y ing. The spindle is formed with a shoulder drawings, making a part of this specification, or collar, E, the bottom of which rests .upon a and to the letters of reference marked thereon. washer, G, placed between the top of the My invention relates to the construction of faucet-neck and the cap J ,as seen inthe dra-wthat class of liuid cocks or faucets in which plug-valves are nsed,.which valves are screwthreaded and are worked to and from the valve-seats by rotary stems.

My improvements have reference to the dewhen the spindle is rotated.` The valve-nut tails of construction by which the liability of O is cast or formed hollow, or with a chamsuch cocks to leak is practically overcome, and ber, T, from which chamber lateral passages also to details of construction tending tolessen M open outward, this construction saving in the cost of such cocks. l weight ot' material, affording room for moveagainst the bottom surface of the cap, the washer G, and cap J, thus keeping the `valvespindle in position,or from vertical movement,

ing, the top surface of the collar bearing The improvement cinsists, primarily, in ment of screw-tap and for exit of chips made y a partition dividing the induction and educsages for entranceofuid from valve-chamber combining,withavalve-passage made through i in cutting screw-thread, and providing pastion passages, a valve-nut,which works in a i to the screw-threads for lubrication. The

chamber made in the neck of the cock, such valve L is so constructed or arranged as to be by the rotation of the stem or spindle, and being for this purpose preferably formed pohaving means to prevent its rotation. lygonal in cross-section, and the walls of the The invention also consists in combining i valve-chamber being correspondingly formed directly with the neck or neck-chamber of the so that as the valve turns its corners meet the cock the meansfor preventing rotation of the faces of the walls, which arrest such rotation, valve in its movements to and from the valvel these means for preventing rotation of the seat. i valve forming a direct part of the faucet-neck,

"he invention further consists in ohamberand not being furnished by an adjunctive deing the valve-nut to facilitate the formation vice. The bottom of the valve is surfaced by ofthe screw-thread therein and to admit the l an elastic packing secured to the valve by a iluid to such thread for lubrication thereof. i suitable screw-nut, 0, this packing rendering Theinvention further consists in combining, the valve-opening impervious when the valve with the valve-chamber, sliding valve-nut, and is forced hard down upon its seat by turning rotary valve stem or spindle, a collar or shonll, the valve spindle C. The faucet is surder'fixed or cast upon or with the valve stem y mounted by a screw-cap, J, and the valveor spindle, with a washer placed between the spindle passes through the center of this cap, stem collar and cap and the top of the faucetl and as iiuid under pressure when the faucet neck, and a loose collar around the spindle l is open fills the valve-chamber and has a between the washer and the top of the valvel tendency to press out through the joints benut. tween the cap and the spindle, and the cap The drawing represents thev interior ari and the faucet-top, provision is necessary or rangement of the parts of a faucet or tluidl important for preventing such leakage; and, cock embodying my improvements. l to make the top of the faucet-neck tight, an

A denotes theinductiomand the eduction elastic or xible washer, H, is interposed bepipe, separated by a partition, through which tween the cap J and the top of the faucet, is the v alve passage l), said partition forming screwing down the cap,creat1ng pressure upon nut being moved to and from the valve-seat incapable of rotation with the screw-spindle, it l this washer against the top 'the joint at the disk, cutting a central h lfor passage of the spindle, and place beneath 'the .washer or between ness that when the of the faucet,and thereby tightening this ioint. Now, to pack spindle, I extend this washer Hgto the spindle, or make the washer from a ole through the disk the washer and the collar, I, having such thicknut is drawn up from the valve-seat, it (the nut) loose metal collar, drivi g 'nut a loose metal The metal collar I is preferably made with a conical recess, as seen in the drawing, the center of the washer being crowded down into the recess so that when the collaris forced upward it shall have a more direct tendency to press the washer against the spindle.

The-cap J and collar I may also be relatively so constructed that the upward pressure of the nut also forces the Washer against the bottom surface of the cap (or against the interposed metal washer G) and thereby aids in tightening the joint between the cap and faucetneck.

When the valve-nut is from the loose collar I,

forced down, away i said collar drops and l shall press against the i f this 22d day of'Ju rests upon a seat, R, projecting' inward from the wall of valve-chamber S.

I claiml. In combination with the valvespindle C and valve-seat P, the cham bered valve-nut L, having orifices M, substantially as shown and described.

2. In combination with the rotating screwspindle 0 and its reciprocating valve-nut L, the ineial washer I and iieXible washer H, arranged to operate su bstan tiall y as described.

3. The relative construction and arrangement ofthe metal collar I, iiexible washer H and metal washer G, substantially as shown and described.

4. In combination with a flexible Washer, a lnetal coll 'ghtly around the spindle when pressed against the washer, substantiall y as shown andrdescribed.

In witness whereof I hereunto set m ly, A. D. 1867.

.ERASTUS STE BBINS.

y l1 an d Witnesses:

JAPHET OHAPIN, J. P. BUCKLAND.

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