Patent GB-190521063-A (GB)
Title: Improvements in or relating to Steam Traps.
Inventor: GEIPEL WILLIAM
Filed: 1905-10-17
Granted: 1906-04-05
Abstract: 21,063. Geipel, W. Oct. 17. Steam traps.-Relates to improvements in the form of steam trap described in Specification No. 21,571, A.D. 1894, and consists (1) in arranging the discharge valve in such a way that it opens against the effluent water and steam ; (2) in the prevention of chattering and scoring of the valve face and seat by an additional throttling device ; and (3) in providing automatic means for operating the lever by which the trap is blown through. The inlet tube a, preferably of brass, is placed above the lower member b and near the frame c. The discharge passage from the brass tube is formed in the valve casing-d such that the escaping water passes to the lower chamber f, which contains the valve h. The valve thus opens against the water and steam when the expansive action of the trap comes into operation and raises the seating from the valve. The effluent is conveyed by a suitable passage in the casing from the chamber g to the lower hollow member b of the trap, from which it escapes in the ordinary manner. The valve is loosely fitted upon the spindle i. The arm m<1> of the hand-lever may, if desired, rest against a fixed stop on the frame c to limit its downward movement. In order, however, to utilize the upward movement of the tubes due to contraction, and thereby to increase the opening of the valve, one of the tubes, such as a, is made to act against the arm m<1> through a rigid rod m' and to push the valve from its seat at the time when the seat is moving away from the valve. Fig. 6 shows the throttling-device in detail as applied to the valve casing d, and Fig. 7 when situated in one of the arms of the trap. It comprises a flanged tube t arranged to slide in a seat and normally held in place by a spring in its fully opened position. When the water is being discharged at high pressures, the increased fluid friction will force the tube outward and cause it partially to close the passage. By this, chattering of the valve and vibration of the trap is lessened. In addition, a transfer of wear is effected from the valve aperture to the discharge opening u, where the wear is of less consequence. The outer end of the tube is preferably notched to prevent complete closure. A renewable wearing piece or stop v may be fitted. When the throttling-device is trans. ferred to the outlet branch, as shown in Fig. 7, it takes the form of a cone-valve w which controls a constructed passage in the tube. The valve is formed with the extension w<1> and with the plate w<7> against which presses the spring w<8>, having as an abutment the perforated plate w<9>. Instead of arranging the arm m<1> of the hand-lever to be operated by the expansion tube a, as in Fig. 1, or arranging it to bear against a fixed support, it may, as in Fig. 8, be operated through the lever 2, which in its turn is acted upon by the rod 4. The upper side of the diaphragm 6 (or piston) is open to the pressure of the steam which fills the arm a of the trap. The position of the arm against which the stem i of the valve acts will be automatically varied upon variation in the steam pressure to which the trap is subjected, as in the traps described in Specification No. 21,783, A.D; 1897. The valve and its stem may be adapted to rotate intermittently as described in Specification No. 24,518, A.D. 1901, or in Specification No. 16,439. A.D. 1905,