baber/WOPTO huggingface dataset:
Patent GB-138951-A (GB)
Title: Improvements in boiler feed water supply & steam condensing plants
IPC: B01D19/00
Filed: 1918-09-26
Abstract: 138,951. Fothergill, H., and Gunn, J. Sept. 26, 1918. Feed-water, supplying and controlling. - Relates to the de-aeration of feed-water. Vapour is withdrawn from the main condenser 1 by the steam-jet ejector 2 and delivered to the condensing-receiver 3, which is under vacuum. Another steam-ejector 5 withdraws from the receiver 3 and discharges into a surface feed-heater 6, from which the air escapes to atmosphere by the pipe 7. The condensate from the main condenser 1 is delivered by the pump 8 direct to the feedheater 6, and thence to the boiler-feed system by the pipe 9. Any additional steam required for heating the feed-water is admitted to the valve 6<a>. The hot drainage from the heater 6 passes by the pipe 11 to the tank 10, to which make-up water may also be supplied by the pipe 12. The water thus heated passes by the float-controlled valve 16 to the de-aeration chamber 4, into which it is sprayed by the sprayer 14. The water is deaerated under the action of the vacuum and then passes by the pipe 17 to mix with the air-free water from the main condenser 1. The de-aerating chamber may be separately constructed and connected to the chamber 3 by a pipe. To ensure a sufficient supply of water to the pump 8, a pipe 18 may be connected from the feed-pipe 9 to the condenser 1, through a valve 19 such as that described in Specification 135,885, [Class 32, Distilling &c.]. In a modification, the de-aerating chamber may be placed on the discharge side of the heater 6 and may be placed under vacuum by connecting it to the suction side of the ejector 5. The whole of the feed-water is passed through the de-aerating chamber. In another modification, Fig. 3, showing a marine condensing-plant, vapour is drawn from the main condenser 1 by the steam ejector 2 and delivered to the condensing-receiver 3. The vapour and condensate are withdrawn separately by a reciprocating pump 29, 30. The condensate passes to a tank 31. The de-aerating cahmber 30 is placed under vacuum by connecting it to a part of the vacuum system other than the main condenser, e.g. the discharge side of the ejector 2 or the auxiliary vacuum condenser 34. Feedwater is. sprayed into the chamber 20 from the tank 31 under the control of a float valve 35, so that a constant head is maintained on the suction side of the feed-pump 36, which discharges to the boilers through a surface heater 38. The drainage water passes from the heater to the tank 31 by a pipe 39. In another modification, the condensate from the main condenser passes through a small auxiliary surface condenser in which the steam from the ejectors is condensed direct to the feed-pump. The drainage water and condensate from the auxiliary condenser only are passed through the de-aerating chamber.
Patent GB-685229-A (GB)
Title: Methods of making thin film resistors
IPC: H01C7/04
Filed: 1950-06-23
Abstract: 685,229. Non-metal resistances; temperature variable resistances. WESTERN ELECTRIC CO., Inc. June 23, 1950 [June 28, 1949], No. 15735/50. Class 37. A thermistor, Fig. 5, comprises a layer of sintered particles of selected thermistor material 14, for example one or more of the oxides of manganese, nickel, cobalt, copper, iron or zinc, sandwiched between two-part electrodes with one part of each electrode an inner layer 19 of a sintered mixture of particles of the selected thermistor material 14 and particles of a noble metal, for example platinum or palladium and the other part of each electrode an outer layer 20 consisting wholly of sintered particles of a noble metal, for example platinum or palladium. In Fig. 4 a thermistor is shown associated with a thermal sink and this thermistor is similar to the one in Fig. 5 except that the outer all-metal electrode layers are omitted. As indicated a platinum ribbon 16 welded to the platinumthermistor material electrode layer 15 supports the thermistor above a slot 18 in a block of copper 17 which constitutes the thermal sink. The manufacture of the thermistor shown in Figs. 4 and 5 involves the use of temporary plastic binders in both the thermistor and electrode material layers and the driving out of these binders simultaneously by heat treatment prior to sintering. The binder and solvent of the thermistor and electrode materials may be identical, for example the binder for both with a selected volatile solvent may be isobutyl methacrylate, polyvinyl buteral, polyvinyl chloride, or cellulose acetate (a plasticizer may be added in the case of a polymerized methacrylate). It is, however, stated to be preferable to employ a binder and solvent for one which is mutually insoluble with that of the other; this may be accomplished by using any of the binders given above for the thermistor material and using for the electrode material poloxyethylene with water as a solvent or copolymer butadiene styrene with cyclohexane as a solvent. The thermistor shown in Fig. 5 may be made from composite thermistor-electrode material which reading on to Fig. 5 comprised in the green stage outer electrode layers 20 formed from a paste of platinum black, isobutyl methacrylate and a volatile solvent, inner electrode layers 19 formed from a paste of 75 per cent by volume of platinum black and 25 per cent by volume of a thermistor material mixed with a copolymer butadiene styrene and cyclohexane as a solvent, and a thermistor material layer 14 formed from a paste of thermistor material, isobutyl methacrylate and a volatile solvent. The Specification includes a chart; Fig. 1 (not shown), which particularizes the various production stages..
Patent GB-515176-A (GB)
Title: Improvements in or relating to gyroscopic navigational instruments
IPC: G01C19/44
Filed: 1938-05-26
Abstract: 515,176. Electric indicating systems. SHEVLIN, J. T. (Siemens Apparate und Maschinen Ges.). May 26, 1938. No. 15771. [Class 40 (i)] [Also in Group XX] The transverse inclination indicator 11 of a gyroscopic artificial horizon for aircraft is associated with a counter indicator 13 which is automatically moved by a device determining the desired bank, e.g., by multiplying the airspeed by the rate of turning. The indicator 11 and a pitch indicator 9 are moved by rotary magnets energized from potentiometers at the axes of a gyrovertical. A rate of turn indicator 3 and a course indicator 6 are similarly moved under the control of a gyroscopic turn indicator and a directional gyroscope respectively. The counter indicator 13 is moved by a rotary magnet energized by current from a device which combines the output of the potentiometer of the gyroscopic turn indicator with the output of an airspeed indicator comprising a propeller driving a generator. The device also combines the output of the transverse potentiometer of the gyrovertical in order to compensate for the inclination of the gyro turn indicator due to banking.
Patent GB-439179-A (GB)
Title: Improvements in or relating to telegraphones and like magnetic recording devices
IPC: G11B5/127
Filed: 1934-05-28
Abstract: 439,179. Telegraphones. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, RUST, N. M., 109, London Road, Chelmsford, and TWEED, C. J. F., Dormers, Worrin Road, Shenfield, Essex. May 28, 1934, No. 15878. [Class 40 (ii)] An electromagnetic sound recording or pickup device comprises two poles 1, 2 one on either side of the record tape &c. 3, the poles having edges which are spaced apart in the direction of travel of the tape and the pole 1 having an operating winding 4 located thereon or adjacent thereto. As shown, the poles are staggered relatively to one another but according to a modification, Fig. 4 (not shown), a chisel-shaped pole is arranged opposite a relatively broad flat pole. The poles 1, 2 may be adjustable as to their relative positions in the direction of travel of the tape and as shown in Fig. 3, an auxiliary winding 6 may be provided on or adjacent the pole 2, this winding being so arranged and connected as to be operative only over the higher audio frequencies of the working range.
Patent GB-1215392-A (GB)
Title: Improvements in or relating to the operation of alkali metal chlorine cells
IPC: C25B1/36
Filed: 1968-04-02
Abstract: 1,215,392. Electrolytically purifying mercury. PPG INDUSTRIES Inc. April 2, 1968 [April 11, 1967], No.15910/68. Heading C7B. A method of purifying mercury, the mercury (a) having been removed from a commercial electrolytic alkali metal chlorine cell having a mercury cathode and (b) containing metallic impurities which are not removed in a denuder, comprises introducing at least a portion of the mercury to an auxiliary electrolytic cell, utilizing the mercury as the cell anode, conducting electrolysis in the cell in the presence of the mercury at an anode potential controlled with respect to a reference electrode so as to be sufficient to cause metallic impurities contained in the mercury to be removed there from but insufficient to cause dissolution of mercury in the cell electrolyte, and removing from the auxiliary cell mercury depleted in metallic impurities. The electrolyte in the auxilliary cell may be brine or alkali metal hydroxide. Fig. 1 illustrates an assembly 1 of alkali metal chlorine cells having mercury cathodes with flow of Na/Hg therefrom through a line 2 to a denuder 3 from which part of the mercury is returned to the cell assembly via a line 11, pump 12 and line 9 and part is returned via an electrolytic cleaning cell 6 wherein the mercury serves as anode. A plurality of alkali metal chlorine cells may be used with series flow of mercury and with series or parallel flow of brine therethrough Fig. 3 (not shown). As illustrated in Fig. 4 (not shown), mercury circulates from a chlorine cell (141) to a denuder (146) and back to the cell (141) via lines (145 and 144), part of the mercury from the denuder (146) being bled to an auxiliary denuder (149) and then through an electrolytic mercury clean-up cell (148) before being returned to the cell (141). Fig. 5 (not shown) illustrates an anodic mercury cleaning cell comprising an epoxy resin lined steel box with a baffle (111) and an expanded steel cathode (103) mounted on polyvinyl dichloride float members (109) which float on mercury (105) being cleaned as it flows through the cell. The anode potential in the cleaning cell is maintained constant within Œ 0À025 volt at 0À3 to 0À6v by means of a control circuit including a sensing probe (104) connected through a salt bridge (121), Fig.6 (not shown) to a reference cell (122). Thereby, a signal is sent through a voltage divider 123 to an electronic controller 124 which regulates the A. C. input to a rectifier 120 supplying electrolyzing current to the cleaning cell. Specified anode materials for the alkali metal chlorine cell are graphite, carbon platinized Ti, and Cu electrodes brazed with Ti and containing a Pt surface.
Patent GB-385856-A (GB)
Title: Improvements in speed-regulating devices for electric motors
IPC: H02P7/06
Filed: 1932-06-06
Abstract: 385,856. Maintaining defined speeds of motors. ROBERTSON, J. H., 1, Albemarle Street, London.-(Assignee of Luca, E. de ; 1, Albemarle Street, London.) June 6, 1932, No. 15941. Convention date, Feb. 29. [Class 38 (iii).] A motor a having a sectionally wound stator and a two-pole rotor is maintained at constant speed by causing it to drive through a resilient coupling d, a flywheel c which is rigidly coupled to a commutator b for controlling the energization of the stator coils. The flywheel and commutator are provided with a centrifugal governor co-operating with an adjustable friction brake. The motor may drive one or more distributors i which control similar motors k driving picture and sound recording apparatus. One of these motors k<3> may have a short-circuited rotor winding so as to operate as an induction motor and be stopped by opening a switch n<2>.
Patent GB-109154-A (GB)
Title: Improvements in Constant Speed Friction Driving Devices.
Inventor: HOPKINS LUTHER SHIELDS
Filed: 1916-11-09
Abstract: 109,154. Hopkins, L. S. Nov. 9, 1916. Driving; speed, regulating. - In driving graphophones, dictaphones, and other machines, a motor 1 drives a shaft secured to a drum 5 carrying adjustable leaf springs 10 bearing on a disk 7 on the driven shaft 8, to give a constant speed drive irrespective of the variations of motor speed. Compensation for variations in load is provided for by the use of a governor 20 carrying a disk 15 engaging a brake arm 14.
Patent GB-594055-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H19/62
Filed: 1946-06-25
Abstract: 594,055. Switches held set and freed mechanically. PRENTICE, H. B. June 25, 1946, No. 16153/45. [Class 38(v)] One or more spring-pressed plate contacts 4 are forced out of bridging engagment with fixed contacts 2 by a cam 8a which is trunnioned in the base and rotated by engagement in a slotted hole 13 therein of a pin 14 on the operating spindle 9. The latter is freely withdrawable from the cam and journalled in the cover 16 to provide a dust-proof construction. Two further movable contacts 4a may be operated from the contacts 4 by push-rods 20 to form a multipole switch. Alternatively, one of the contacts may be replaced by a solid link, or a fuse, Fig. 1 (not shown) or the movable contacts may be fuse links. A return or control spring may be fitted to the spindle or its head, and rotation restricted by stops in the base which engage the lowermost pin 14.
Patent GB-635918-A (GB)
Title: Thermostatic apparatus for controlling rate of flow of fluids
IPC: G05D23/13
Filed: 1947-08-19
Abstract: 635,918. Thermally - actuated valves. HAMILL, W. W. Aug. 19, 1947, No. 16179. [Class 135] Thermostatic apparatus, e.g. for use in the cooling water circuit between an engine, radiator and pump, comprises a casing having two orifices controlled by two bi-metallic strip members coupled together. The casing has a fluid inlet 3 and two outlets 4, 5. The bimetallic strips have their movable portions 6, 6 joined by a link 10 so that as one outlet is opened the other closes. The strips are supported in the casing by curved embracing portions 8, 9, fitting into a recess in the casing and abut on each other at 13, 14, and on the casing at 12. The strips may be incorporated in a removable ported inner casing as a unit and may be laminated.
Patent GB-871685-A (GB)
Title: Dispenser for tablets and the like
IPC: B65D83/04
Filed: 1959-05-12
Abstract: 871,685. Tablet dispensers. CZETTEL, R. May 12, 1959 [May 20, 1958; Jan. 30, 1959], No. 16196/59. Class 18. In a tablet dispenser tablets 4 are ejected from a stack by an ejector 8 by partly withdrawing one of a pair of inter-fitting sleeves 1, 5 surrounding the stack which is pushed back against the action of a feed spring 2 at least during the final part of each ejection, the dispensing aperture 10 being closed between ejections. In one embodiment, Fig. 2, the sleeve 5 is closed at the top, open along the bottom and one side and surrounds an open-topped sleeve 1. The ejector 8 is loaded by a spring 6 and is hinged in the sleeve 5 at 7. To dispense a tablet the sleeve 1 is pushed downwardly relative to the sleeve 5 by a button 9 and the ejector 8 pushes the tablet 4<SP>1</SP> through the aperture 10 so formed. After release the ejector 8 bears down on the stack to relieve the tablet 4<SP>1</SP> of upward pressure. When the sleeve 1 is pushed upwards the side wall thereof returns ejector 8 to its original position. Projections 12 on a member 3 engage slots 13 in the sleeve 1 to prevent the latter from being completely withdrawn from the sleeve 5. The tablets may be guided into position by a U-shaped trough 14 which is also slotted to receive the projections 12. In a modification, Fig. 7, the outer sleeve 21 is open at the top. The inner sleeve 25 has an opening in one side to form the dispensing opening 30. To dispense a tablet upward pressure is applied to an inclined face 39 to raise the sleeve 25 until an edge 38 is intercepted by an abutment 37 and a tablet 24<SP>1</SP> is ejected by a lever 28. In a further modification (not shown) the ejector lever is hinged to pivot on a vertical axis. In another modification, Fig. 11, the dispenser is of circular section and has a closure cap 60 through which it is refilled. The dispensing and refilling apertures may be arranged sideby-side so that they are opened by relative rotation between the sleeves.
Patent GB-240251-A (GB)
Title: An improved curtain hook
IPC: A47H13/10
Filed: 1924-07-05
Abstract: 240,251. Chalmer, E. July 5, 1924. Hooks. - In a curtain hook the pointed end a for piercing the curtain is bent so as to point slightly outwards and upwards at an angle of not less than 30‹ or more than 50‹ the point crossing or extending only just beyond the shank d which is curved to form a hook e for engaging a curtain ring. Reference has been directed by the Comptroller to Specification 21765/92.
Patent GB-1433996-A (GB)
Title: Device for closing the rear top flap of a parallelepiped box
IPC: B65B7/20
Filed: 1974-04-11
Abstract: 1433996 Apparatus for closing box flap A MARCHETTI 11 April 1974 16268/74 Heading B8C A device for closing the rear top flaps of boxes 22 comprises a roller conveyer 2 over which the boxes are moved by driven side belts 4, a folding arm 6 mounted on a shaft 5 which extends transversely to the direction of movement of the boxes and can be moved axially with a simultaneous rotational movement to  cause the folding arm 6 to move behind a box and close its rear top flap, and a double-acting pneumatic piston and cylinder unit for moving the shaft 5. The shaft 5 includes a helically grooved portion which is spaced from the end carrying the folding arm 6 by a flat surfaced portion. Guide rollers 21 are engageable with the grooved portion to cause rotation of the shaft 5 as it is moved axially. The piston and cylinder unit is controlled by valves 19 and 20 actuated by the box. The folding arm 6 comprises a rear portion 26 which is horizontal when in the position shown in Fig. 1, and a leading portion 27 inclined downwardly from the horizontal rear portion 26. The folding arrangement is adjustably mounted on a fixed support 9.
Patent GB-571295-A (GB)
Title: Improvements relating to refrigerators
IPC: F25C1/24
Filed: 1943-10-05
Abstract: 571,295. Ice-making. FRIGIDAIRE, Ltd., and WILLIAMS, C. E. Oct. 5, 1943, No. 16300. [Class 29] In order to prevent accidental outward movement of a sliding ice tray 6 of the cooling unit of a small refrigerator cabinet carried in an aircraft or on a boat, a freely pendent retaining bail 5 pivoted at 5b to the walls of 4a of the icemaking unit normally engages the front of the tray below the finger grip 6a. It may be turned upwards in front of the grip to release the tray. The tray may be covered by a diaphragm of synthetic rubber with a beaded edge. to prevent spilling of water due to the tray being out of level.
Patent GB-1321321-A (GB)
Title: Heating and ventilation systems for motor vehicles
IPC: F28D1/04
Filed: 1971-05-21
Abstract: 1321321 Vehicle heating systems; headers DAIMLER-BENZ AG 21 May 1971 [23 May 1970] 16315/71 Addition to 1209875 Headings F4S and F4V A motor vehicle heating and ventilating system as described in Specification 1,209,875 is modified in that the heating medium inflow chamber 7 of the divided header of each multipass heat exchanger is substantially smaller in size than the outflow chamber 8.
Patent GB-803861-A (GB)
Title: Improvements in or relating to valves for fire extinguishing
Inventor: LINDLEY HARRY
IPC: F16K17/40
Filed: 1954-06-02
Abstract: 803,861. Valves. LINDLEY, Ltd., H. June 2, 1955 [June 2, 1954], No. 16322/54. Class 135. A stop-valve for use in a fire-extinguishing system consists of a closure member 44 acted upon in the opening direction by water pressure so as to apply, through a stem 22, extensionpiece 20, and lever 32 pivoted to a pair of links 16, tension to a fusible link 36, as described in Specification 803,862, incorporated in a wire rope 34 by which the valve is held closed. When the valve is released by fusing of the link due to fire an electric switch 40 having arms 42 with a cross-piece 43 engaging the lever 32 is actuated to energize a warning device such as an alarm bell. The switch may also stop machinery such as a conveyer system. A screwed stud 28 carrying a handwheel 30 is engageable with the extension-piece 20 and may be withdrawn from contact therewith when the valve member is held on its seat by the lever 32.
Patent GB-545700-A (GB)
Title: Improvements in or relating to electrical therapeutical apparatus and method
IPC: A61N1/32
Filed: 1940-11-11
Abstract: 545,700. Electric medical appliances. BYRNE, E. L. W. (Cardwell Manufacturing Corporation, A. D.). Nov. 11, 1940, No. 16361. [Class 81 (ii)] Electro-therapeutic apparatus for applying different frequencies of alternating current according to the part of the body or the disease under treatment is provided with interchangeable control units for changing the frequency. The apparatus comprises an oscillation generator having two valves 12, 13, Fig. 4, of which the filaments 10, 11 are fed from a transformer F. The anodes 27, 28 are connected to sockets 25, 26 with which engage plugs 23, 24 connected to a coil 22. This has a centre tapping connected to a plug 29 which engages a socket 21 connected to a tapping 20 on the secondary winding 17 of the anode supply transformer P. Alternatively the coil tapping is connected to a plug 65 which engages a socket 19 connected to one end of the secondary winding 17, so that a higher voltage is applied to the anode circuit. The grids 30, 31 are connected by a grid coil 32 the mid-point of which is connected through a grid leak resistance 33 to the mid-point of the secondary winding 8 of the filament transformer F. The grid coil 32 is large enough to permit efficient operation on the lower frequencies to be used and is provided with tappings 34, 36 connected to sockets 35, 37 so that the portion of the coil between them may be short-circuited by a conductor 40 connected to plugs 38, 39 for operating at higher frequencies. The conductor 40 may be replaced by a condenser or inductance. Adjustably coupled with the coil 22 is an output coil 41 to which are connected leads 42, 43 carrying applicators 44, 45 consisting of conductors enclosed in rubber pads. The transformers P, F, valves 12, 13, and grid coil 32 are mounted on a base 46, Fig. 1, on which is also mounted a frame 47 carrying the fixed contacts 25, 35, 19, 21, 37, 26. The coil 22 is mounted in a porcelain carrier 49 which slides on guides on the frame 47, The contacts 23, 24, 38, 39, 29 are also mounted on the carrier 49 and plug into the fixed contacts when the carrier is pushed into position. The coil 41 is carried by a shaft 51 rotatably mounted on the frame 47 and provided with an actuating knob 52. When the coil 41 is turned from the uncoupled position shown to an operative position within the coil 22 a projection 54 on the shaft 51 engages a spring latch 55 which prevents removal of the carrier 49. When the coil 41 is turned into the uncoupled position the latch 55 is released and the carrier 49 may be removed and replaced by another carrier with coils 22, 41 of different numbers of turns for obtaining a different frequency. A spring plunger 71 is pushed in between contacts 70 to close the main circuit when the carrier 49 is inserted and is retracted by a spring to break the circuit when the carrier is removed.