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    • 2. 发明专利
    • Improvements in and relating to liquid discharge valves
    • GB877625A
    • 1961-09-20
    • GB2786958
    • 1958-08-29
    • MATTHEW HALL & COMPANY LTD
    • ALLEN GEORGEVENISON DOUGLAS MICHAEL
    • A62C99/00F16K17/38
    • 877,625. Valves. HALL & CO. Ltd., MATTHEW. Aug. 29, 1958, No. 27869/58. Class 135. A self-releasing valve, such as a deluge valve for use in a sprinkler system comprises a pivoted clapper 14 held closed against fluid-pressure by a primary pivoted lever 15, engaged at its free end by a secondary pivoted lever 16, in turn engaged by a third lever 21, attached to a shaft 10 journalled in the valve housing and normally prevented from rotating by a locking device. The locking device comprises a counterweighted lever 31 attached to the other end of the shaft 10 and having a detent engageable by a plunger rod 40 attached to a diaphragm 42 by which the rod 40 may be moved out of engagement with the detent on reduction of pressure in a trigger line connected to a port 34. Leakage from around the shaft 36, which has a pin 26 engaging a helical groove in the housing so that it moves axially in the housing as it is rotated is prevented in the position shown by a washer 14 1 engaging a seating 45 and in the open-position by a taper-collar 51 engaging a corresponding face formed in the housing. After operation the valve must be reset manually through an inspection cover.
    • 5. 发明专利
    • Improvements in and relating to ventilation
    • GB864738A
    • 1961-04-06
    • GB1950056
    • 1956-06-22
    • MATTHEW HALL & COMPANY LTD
    • BURNS BASIL ERNESTDAWSON HENRY LEONARDALLEN WILLIAM PATRICK
    • B08B15/02
    • 864,738. Ventilating. MATTHEW HALL & CO. Ltd. June 21, 1957 [June 22, 1956], No. 19500/56. Class 137 In a fume cupboard in which an extra duct D serves to discharge the gaseous contents of a chamber C to atmosphere a nozzle 2 in the duct D is connected to a source of high pressure air, such as a pipe 1, to induce a flow of the gaseous contents when so required. The chamber C has an inspection shutter S mounted in guides B and has a slot 12 in a false bottom 8 to provide a secondary flow of air (from a high pressure box 9) supplied through the pipes 1 1 and 1 across the shutter opening to create a front curtain between the chamber's interior and exterior, or has air entering from a partly or generally perforated false bottom. The box 9 may be connected instead to a fan collecting air through a duct from other parts of the building. There may be a drip tray underneath the perforations or the floor of the box may be at an angle so that liquid runs off into a gully. In a modification the cupboard has a false ceiling with an opening for the gases, the top is bell-shaped, and in the pressure box is a sparge pipe for washing down. Outside air may be supplied to the nozzle and box 9.
    • 7. 发明专利
    • Corner air conditioning unit
    • GB792057A
    • 1958-03-19
    • GB1683755
    • 1955-06-10
    • MATTHEW HALL & COMPANY LTD
    • DAWSON HENRY LEONARD
    • F24F1/01F24F13/26
    • 792,057. Air conditioning apparatus HALL & CO. Ltd., M. June 1, 1956 [June 10, 1955], No. 16837/55. Addition to 769,989. Class 137 An air conditioning unit, for fitting, e.g. into a corner of a room, comprises a panel P which extends from the floor to the ceiling and co-operates with corner walls W, W 1 , to form a chamber C, a discharge nozzle N for primary air under pressure being mounted at the rear of a heat exchanger B to supply an upward flow of primary air which induces secondary room air to enter an opening in the panel, pass over the heat exchanger B and mix with the stream of primary air for discharge to the room space through an opening G at the top of the panel. Instead of providing an inlet opening as shown it may be cut away at the bottom of the panel. In a modification, Fig. 4, the heat exchanger B 2 is arranged behind the middle opening 2 of three openings 1, 2, 3 in a panel P 1 , and a discharge nozzle N 1 , adjacent the heat exchanger B 2 , is capable, by means of a valve, of directing primary air either upwardly, or downwardly, within the duct c. When the louvres of the bottom opening 1 are closed secondary air is induced through the opening 2 and over the battery B 2 for discharge with the primary air, through the upper opening 3. If it is not desired to heat, or cool, the air delivered to the room the louvres of the opening 1 are opened and the battery B 2 is by-passed by the rising air. By suitably positioning the louvres of the openings 1 and 3 and discharging air from the nozzle in a downwards direction air can be delivered to the room at floor level. The heat exchanger connected to hot, or chilled, pipes 4, 5, has a condensate drain 6.
    • 8. 发明专利
    • Improvements relating to air conditioning apparatus
    • GB773293A
    • 1957-04-24
    • GB2589855
    • 1955-09-09
    • MATTHEW HALL & COMPANY LTD
    • DAWSON HENRY LEONARD
    • F24F1/02F24F13/20
    • 773,293. Unit air conditioning apparatus. HALL & CO., Ltd., M. Sept. 9, 1955, No. 25893/55. Class 137 An air conditioning unit, comprising a casing c fitted in an opening in a false ceiling wall W, houses a centrifugal fan F, a heat exchanger B, and a motor M where the fan unit is not fitted with an integral motor. The casing is divided into two side passages 20 and a central com-. partment by two vertical partitions 7, 7 1 which join a back wall 13 and are connected by means of strips 6, to two vertical strips 5 which extend across the open front of the casing c to define air intake openings 4 for the side. pasages 20 and an air outlet 3 for the central compartment between the partitions 7, 7 1 . Used air from the room space below the sub-ceiling enters the side passages 20 through the openings 4 and passes into the fan F through openings 11, 11 1 in the back wall 13. Air discharged from an opening 12 in one side of the fan casing passes over the gilled tubes 10 of the heat exchanger B and into the room through opening 3. The fan F is driven by a belt 16 which extends from a pulley on the output shaft of the motor M to a pulley 18 fast with an extension 19 of the fan shaft. An opening 32 in one side of the casing may communicate with a fresh air duct and may be provided with a removable filter. A tray 17 is situated beneath the battery B to catch moisture dropping from the battery B and the associated water piping.