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    • 71. 发明专利
    • Improvements in means for detecting the presence of suspended matter in fluids
    • GB502971A
    • 1939-03-28
    • GB2625737
    • 1937-09-28
    • BRITISH ELECTRICON LONDON LTDWILLIAM ALBERT ROBINSONWILLIAM ARNOLD CHAMBERS
    • G01N21/53
    • 502,971. Photo-electric apparatus for detecting suspended matter in fluids. BRITISH ELECTRICON (LONDON), Ltd., ROBINSON, W. A., and CHAMBERS, W. A. Sept. 28, 1937, No. 26257. [Class 40 (iii)] Relates to photo-electric apparatus of the kind in which a photo-electric cell normally in the dark becomes illuminated when a fluid passing through a lighted chamber contains particles of suspended matter, the illumination of the cell being due to reflection or refraction by the suspended particles, for example as described in Specification 272,914, [Class 40 (v)]. According to the invention, the fluid conveying installation together with the light source and the light-sensitive device form a stationary system, and an optical travelling unit is provided to scan a number of fluid streams in succession, a distributing switch device being moved at the same time to connect the corresponding signal circuit to the amplifier controlled by the photo-cell. As shown in Figs. 2 and 4, a number of chambers 3 are disposed around a rotary scanning device 15 and are supplied with fluids by a number of pipes 2. The fluids are discharged through outlets 9 to an upper space 7 and then through outlets 10 to a hood 11 connected to an exhauster (not shown); or the fluids may be led from the chambers 3 directly to the hood 11. The chambers are illuminated by electric lamps 13 directly below bottom openings in the chambers 3. The rotary scanning device 15 contains a reflector 18 and is carried by an insulating disc 19 provided underneath with a contact piece 25 adapted to bridge pairs of contacts 28, 29 in succession as a window 16 in the scanning device comes opposite a window 8 in a chamber 3. In this position of the scanning device, if the fluid in the chamber 3 is clear, no light is received by the scanning device ; but if the fluid contains suspended matter, light therefrom passes into the scanning device and is reflected through a window 17 on to a photo-cell 31 in an opaque casing 30. This cell is connected to an amplifier 45, Fig. 5, which operates a relay 44 to close a contact 43 when light strikes the cell. This completes the circuit of the drop indicator 39 corresponding to the contacts 28, 29 bridged over by the contact piece 25, thereby indicating the particular chamber 3 in which there is matter in suspension. At the same time, a relay 42 closes the circuit of a main power alarm. As shown in Fig. 5, the circuits of the signals 39 are fed from one source A, and the amplifier 45, the lamps 13, and the motors 23, 24 for driving the scanning device are fed from mains 34. Two driving motors 23, 24 are provided, so that one can act as a stand-by. In a modification, Fig. 6, two cells 31, 51 are used in conjunction with two reflectors 18, 18 and two windows in the scanning device. These cells may be used at the same time' to check each other; or one may be switched out to act as a stand-by.
    • 72. 发明专利
    • Improvements in sheet feeding devices for manifolding apparatus
    • GB498453A
    • 1939-01-09
    • GB1148138
    • 1938-04-14
    • JOHN ISAAC BURTON READWILLIAM ALBERT BAGULEY
    • B65H3/06B65H3/54
    • 498,453. Feeding sheets. READ, J. I. B., and BAGULEY, W. A. April 14,1031:>, No. 11481. [Class 100 (i)] A device for feeding sheets to manifolding machines in which a friction feed roller h is reciprocated over the top of a pit d and is held by a knife j from rotating as the roller moves towards the feed table c, but is free to revolve on the backward movement is constructed with a pressing device and means to prevent double feed comprising a floating frame o having a U-shaped central part and side wings o extending from the front thereof. The frame rests on the pile and to the lower ends of the wings o a bar p is secured which is provided with legs q which are received in slots r in the table c and serve as registering devices for the front edge of the pile. The upper edge of the bar p is nearly flush with the top sheet of the pile, and the separated top sheet passes over the top of the bar p but sheets below the top sheet are kept back by the bar p and the legs q. The machine can deal with sheets of different widths and adjustable side gauges e are provided for the pile. The frame o is fitted with upstanding ears o to facilitate manipulation.
    • 73. 发明专利
    • Improvements in or relating to electric domestic ovens or cookers
    • GB480012A
    • 1938-02-16
    • GB74536
    • 1936-12-08
    • WILLIAM ALBERT STICKLEYIONLITE LTD
    • F24C7/08
    • 480,012. Supply systems for cousumption apparatus. STICKLEY, W. A., and IONLITE, Ltd. Dec. 8, 1936, No. 745. [Class 38 (iv)] [Also in Group XXXVII] Switching controls ; interrupters.-The heaters of an electric oven or cooker are controlled by a motor-driven switch which periodically breaks the circuit or reduces the current from a high to a low value, the relative duration of " on " and " off " or high and low periods and thus the temperature obtained being adjustable by rotation of a knob 3 which also controls the motor circuit. The first movement of the knob 3 actuates a bar 6, a slot in which engages an eccentric groove 5, and closes contacts (not shown) in the motor circuit. The motor thereupon rotates a shaft 13 carrying one or more snail cams 14. Each cam 14 is engaged by the nose 18 of the carrier of a mercury switch 15 which pivots in a carrier 17. The carrier itself is adjustably moved about its pivot 19 by rotation of a cam 21 by the knob 3. Thus rotation of the knob 3 moves the nose 18 further away from the centre 13. As the cam 14 rotates the nose 18 slips off it for part of the revolution and is brought back on it for the remainder, the relative duration of " on " and " off " being determined by the position of the knob 3.
    • 74. 发明专利
    • Improvements in and relating to fluid-pressure power installations
    • GB467504A
    • 1937-06-14
    • GB3468035
    • 1935-12-13
    • WILLIAM ALBERT WHITEWHITE S MARINE ENGINEERING COM
    • F01B17/04
    • 467,504. Reciprocating engines; marine power plant. WHITE, W. A., and WHITE'S MARINE ENGINEERING CO., Ltd. Dec. 13, 1935, No. 34680. [Classes 110 (iii) and 122 (iii)] Comprises a condensable, fluidpressure reciprocator with two or more stages, in which the crankangles are chosen to give a good mechanical balance, and superheating is effected between the stages so that the low-pressure cylinder does more work than a higher-pressure cylinder in the ratio of from 1À3 to 1 to 1À1 to 1. In a specific construction, the H.P. cranks are at 55‹ and the L.P. cranks at 108‹ apart. In the double-compound engine shown, which may be used in the power-plant described in Specification 362,255, high and low-pressure cylinders A , A , B , B are arranged as shown. The low-pressure cylinders are adapted to do more work than the high-pressure cylinders in the ratio of 1À3 to 1. The H.P. exhaust is superheated by superheated steam before entry into the L.P. cylinder. The reheater comprises heat-transferring units C , C with internal tubes c secured to the backs of the engine and fed with superheated steam through a fitting D, the steam passing through a pipe e to the H.P. valve chests. The H.P. cylinders exhaust, through pipes f, f and the heaters C , C to the L.P. chests b , b respectively. The L.P. cylinder's exhaust from pipes i, i passes through a pipe k to the turbine, or by a change-over-valve to the condenser. The reheater tubes may be bent to conform to the plan of the engine. Instead of a three power-shaft arrangement as described in the above Specification, the crankshaft may drive directly the propeller shaft, and the turbine geared to it. Alternatively, the turbine may drive the auxiliaries. The reciprocating-engine may be used alone.
    • 77. 发明专利
    • Improvements in the method of and in reinforced concrete slabs for insulating water-proof floors and flat roofs
    • GB440961A
    • 1936-01-06
    • GB1975634
    • 1934-07-05
    • REGINALD HENRY BATESWILLIAM ALBERT COOPER
    • E04D11/00
    • 440,961. Roofs ; floors; slabs. BATES, R. H., 30, Ballantrae Road, Mossley Hill, Liverpool, and COOPER, W. A., 36, Cambridge Avenue, Great Crosby, near Liverpool. July 5, 1934, No. 19756. [Classes 20 (iv), 87 (i), and 107] A flat roof or floor A is provided with a superposed insulating layer in the form of a number of concrete or reinforced-concrete slabs D, each of which is bevelled around its upper periphery and has at each corner a depending supporting foot E extending below the underside of the slab by an amount at least equal to twice the thickness of the slab, the outer faces of the feet being shaped to provide vertical grouting grooves 3. The slabs may be provided with additional supporting feet E at the centres of the longer sides, as shown in Fig. 8. The slabs are placed side by side and end to end so that the grooves 3 formed in the abutting feet E of adjacent slabs provide vertical cavities for the reception of grouting, and the bevelled peripheries of adjacent slabs form continuous longitudinal and transverse V-shaped grooves which also receive grouting. The marginal slabs of the roof or floor are provided with continuous depending flanges along one side or end, or, in the case of a corner slab, along one side and one end, in order to provide an enclosed air space between the slabs and the surface of the structure A. The roof or floor A is provided with an asphalt covering C, which may be provided in two layers, as shown in Fig. 1. The surfaces of the slabs may have cast-iron gratings moulded therein.