Patent GB-190409209-A (GB)
Title: Improvements in or relating to Steam Heating Systems.
Inventor: STILL WILLIAM MUDD
Filed: 1904-04-21
Granted: 1905-02-23
Abstract: 9209. Still, W. M., and Adamson, A. G. April 21. Heating ships.-Relates to steam hetting-apparatus applicable to ships &c. The steamadmission valve of each radiator is open except when the temperature or pressure in the radiator is sufficient to cause the opening of a bye-pass valve controlling the access of steam to a device which, when acted upon by steam, closes the steam - admission valve of the radiator. When the valve - closing device has resumed its normal condition, the admission valve is again opened. Fig. 1 shows diagrammatically the heating- system; Figs. 2 and 3 show the regulating-device, detail modifications being shown in Figs. 4, 5, and 6. The steam-supply pipe a is conneted to a passage d leading to a steam chamber e, one wall f of which is flexible. Communication between the passage d and the chamber e is controlled by a valve g. From the chamber e, a bye-pass passage i, in which a weighted valve q is arranged, leads to a thermostatic device such as that described in Specification No. 21,571, A.D. 1902, [Abridgment Class Heating], or a second steam chamber l containing a capsule k charged with an expansible fluid. The adjacent flexible walls of the chambers l, e are connected by a block of vulcanized fibre or the like. The outer wall of the chamber l receives the conical head of an adjusting-screw p The valve q is adapted to open suddenly, so that sufficient steam passes to the capsule k to force the valve g on to its seat and keep it closed for a short period. The valve q consists of a stem q<2> provided with wings or grooves, a body q<1> and a piston-like head q<6>. The steam pressure on the underside of the body q<1> raises the valve until a port q<5> leading to the capsule k is uncovered. The radiators may be arranged in sections, and the steam supply to any or all of the sections may be shut off by means of the stop-cock t. The cock plug, which is adapted to turn through about a quarter of a revolution, is formed with an external groove u which permits the passage of steam except when the plug is in one extreme position. The inner hollow end of the plug is provided with oppositelyarranged apertures x, y, which open to corresponding passages v, w leading to the radiators. The aperture x extends over a larger arc than the aperture y, so that the port w is closed before the port v. When both ports are closed, the groove u is also blocked so as to cut off the steam supply to the regulating-device. In order to prevent the escape of steam from the radiators through the bye-pass and the chamber l when the valve g is closed, the steam chamber e may be dispensed with, and a tubular valve 5, Fig. 4, connected to the capsule k. The valve 5, which has an inlet port 7, is provided with outlet ports 8, 9 regulating the steam supply to the radiators and bye-pass, respectively. The valve is moved longitudinally on turning the spindle 10, attached to the capsule k, so as to close the ports 8, 9, simultaneously. The spindle 10 is provided with grooves with which pins engage. The grooves are formed so that the spindle may be partly turned without closing the valve 5. Figs. 5 and 6 show a modification of the arrangement shown in Figs. 2 and 3, in which the body of the valve g is formed with passages 13, which extend longitudinally from the steam supply end to near the head of the valve, where they extend laterally. A passage 14 leads from the steam chamber e to an external groove 15. The valve is shown as being closed, but, when open, steam can pass through the passages 13 into the chamber o and thence through the passage 14, the 'groove 15, and passage h to the radiators. A strainer or "filter" 1, Fig. 2, of wire gauze may be fitted over the inlet end of the pipe a.