US147498A - Improvement in hose-couplings - Google Patents

Description

W. M. HENDERSON. Hose-Couplings. No..l47,498. Paiemedfebmrmm.

m, fw M... v: www.. M mV wf l|1/////// Z, /f V//M Wwf/Y ...a

UNITED STATES PATENT CEEICEo XVILLIAM bLHENDERSON, OF PHILADELPHIA, PENNSYLVANIA.

lMPROVEMENT IN HosE-couPLlNes.

Specification forming part of Leiters Patent No. 147,498, dated February 17, 18M; application filed January 21, 1874.

To all whom it may concern:

Be it known that I, WLLLLAM M. HENDER- soN, of Philadelphia, Pennsylvania, have in vented certain Improvements in Hose-Couplin gs, of which the following is a specication:

This invention relates to that class of hose couplings which are made to immediately engage with eachother without lthe use ot' the usual positive screw-thread form'of connection, a leading' type of the same being illustrated in the United States Patent ot' Alfred C. Jones, No. 1,131, AID. 1861. The object of this improvement is to produce a coupling by direct contact of two similar halves, which shall be air-tight when no interior pressure is experienced, and shall become more effcctu ally sealed the greater that interior pressure becomes; and consists in the application to ahosecoupling of certain cone-shaped elastic rings, forming lips, which bind together in the act of coupling, making an air-tight joint, which is, furthermore, eftectually sealed by interior pressure.

Referring' to the annexed drawing, Figure 1 shows a form of coupling which 'may be employed for .the ordinary purpose of coupling iire-engine hose and other similar uses. Fig. 2 shows a form adapted to the requirements ot' hydraulic, stealn, and air brakes, as einployed for railroad purposes; and Fig. 3 illus trates the form ot' the elastic rings in their normal condition.

A A are cone-shaped elastic rings, prefera bly of pure rubber, fitted into corresponding grooves turned in the faces of each half' of the l coupling. Their faces, where they come to; gether, are slightlyT beveled, as shown by Fig. 3, so that the circular edge of the least diam; eter shall lirst come togetherV and be subject to compression in the act of coupling, which shall thus make an air-tight joint, unintluenced by the absence or presence of interior pressure, the influence of the latter being such that acting upon the inclined surfaces ofthe elastic rings iu the direction shown by the arrows will bind the lips of the rings more iirmly together in proportion to the interior pressure expe rienced. I3 B is the shell oi' the coupling. (l G are clip-springs for holding the two halves of the coupling together, of such nature that any undue direct force or jerk will cause a separation. l) D are win g-valves fitted to the interior of coupling, Fig. 2, with springs, to insure their prompt closing when separated. The wings are made to project equal to the amount required for opening, which, when coupled, forces each valve from its seat, establishing a passage through the body of the coupling.

In a hose-coupling, as' descrilzejl, the co11e shaped elastic rings A A, arranged so that in terior radial pressure binds their lips firmly together, making an air-tight joint, substantially in the manner set forth.

WILLIAM M. HENDERSON.

N-Vitnesses: V

FREDE. PAXsoN, MARMADUKE Mo cnn.

Images