baber/WOPTO huggingface dataset:
Patent GB-203081-A (GB)
Title: Improvements in gratings for controlling the light beam of lamps having great lighting power
IPC: F21V11/00
Filed: 1922-06-12
Abstract: 203,081. Geuns, J. E. C. van. June 12, 1922. Lantern gratings. - In a device of the kind described in Specification 181,708 for use in front of vehicle and like lamps, distance pieces 6 having reflecting lateral faces diverging forwardly are arranged on the plate-supporting pins 5 between the plates 4. The pins 5 are arranged in pairs, one behind the other, and register with holes in the plates. The distance pieces 6 may be made of bent narrow strips of bright metal which may be nickelled on their outer surfaces, or of glass silver-plated on their outer surfaces, and may be fixed to the plates 4 or formed therefrom as turned up edges or by pressing out or bending. Similar distance pieces 7 may be provided at the lateral edges of the plates.
Patent GB-1131159-A (GB)
Title: Improvements in and relating to television apparatus
Inventor: JERVIS MARTIN HUGH
IPC: H04N5/33
Filed: 1967-04-10
Abstract: 1,131,159. Television. ASSOCIATED SEMICONDUCTOR MFRS. Ltd. 10 April, 1967, No. 16299/67. Heading H4F. In an infra-red camera in which a disc having a spiral of apertures is rotated to dissect or scan an infra-red image, the radiation transmitted through the apertures being incident on an infra-red detector, the material of at least the apertured part of the side of the irradiated disc facing the detector is such that at least 5%, e.g. 20 or 50%, of the photon flux density it emits in the waveband 1-14 microns is emitted at a depth greater than 5 microns from the surface of the disc. The Specification states that using such a disc improves the signal/noise ratio since a considerable part of the radiation of infrared energy from the disc originates from a depth which is greater than the depth of normal surface irregularities. The disc may have an inner part of infra-red absorbing material, e.g. aluminium, which is coated with a suitable material at least 100 microns thick, or the disc may be made of polymethyl-methacrylate, polystyrene or infra-red translucent glass. The disc may be of annular form supported by spokes. The apertures may be arranged to provide interlacing. The material of the apertured part of the disc may be such that at least 75% of the photon flux density it emits in the waveband 8-14 microns or 1-5 microns or 3-5 microns is emitted at a depth greater than 5 microns from the surface of the disc.
Patent GB-807093-A (GB)
Title: Improvements in and relating to powder metallurgy products
IPC: C22C32/00
Filed: 1955-06-07
Abstract: Wrought, heat-resistant products formed by the consolidation, sintering and working of metal powders comprise 5-20 per cent. by volume of substantially insoluble compounds and the balance a ductile, heat-resistant matrix metal, the compounds preferably being selected from the carbides, borides, silicides and nitrides of Ti, Zr, Nb, Ta, V and Hf and the disilicides of Mo and W.  The heat-resistant matrix metal may contain 5-32 per cent.  Cr., up to 25 per cent Fe and the remainder at least one metal selected from the group of up to 90 per cent.  Ni and up to 70 per cent Co the sum of the contents of Ni and Co being at least 40 per cent. of the matrix metal.  The matrix may also contain one or more of W, Mo, Nb, Ta, Ti, Al, Mu, Si, B, C and N.  The particles of matrix metal, e.g., of a size below 40 microns, and those of the compound, e.g., of a size below 10 microns, are mixed and pressed under a pressure of at least 30 tons per square inch and sintered at a temperature in the range of 1100 DEG C. to not over 5 DEG C. below the incipient fusion point. Sintering is preferably performed in two stages, the first in the range 1100-1125 DEG C. at a pressure not over 50 microns of mercury and the second at 5-100C. DEG  below the incipient fusion point at a pressure not over 0.1 micron of mercury.  The average distance between the particles of finely divided compound in the product should be not greater than 1 micron.
Patent GB-389076-A (GB)
Title: Improvements in the treatment of liquids by base exchange
IPC: B01J39/02
Filed: 1931-06-04
Abstract: In treating liquids by base-exchange, material is used which contains hydrogen as the interchangeable ion.  Such an agent may be obtained by treating zeolite or zeolitic material with dilute acid.  The process may be used for obtaining valuable alkali salts, such as lithium carbonate, from dilute solutions.ALSO:In treating liquids by base-exchange, material is used which contains hydrogen as the interchangeable ion.  Such an agent may be obtained by treating zeolite or zeolitic material with dilute acid.  The material is regenerated by treatment with extremely dilute acids.  Hydrochloric, sulphuric, formic, acetic or lactic acids may be used.  For treating water the material may contain hydrogen ions and alkali ions in proportion respectively to the temporary and permanent hardness of the water, regeneration being effected by simultaneous or successive application of appropriate quantities of dilute acids and salt solutions.  Alternatively water may be softened by passage first through a base-exchange material containing hydrogen, then through one containing alkali and finally through one containing hydrogen. The process may be used for obtaining valuable alkali salts, such as lithium carbonate from dilute solution.
Patent GB-597274-A (GB)
Title: Improvements in and relating to automatically controlled electric lighting systems
IPC: H05B39/10
Filed: 1946-06-24
Abstract: 597,274. Visible signalling apparatus. STERN, W. L. June 24, 1946, No. 16456/45. [Class 118 (ii)] [Also in Group XXXV] The automatically controlled lighting system of a flashing buoy or beacon comprises a lamp bulb 4 containing two or more similar filaments (three filaments 1-3 being used in the example), a flashing-switch 8 in the supply circuit to the filaments, and, magnetic relay switches 9, 11 which operate to insert another filament in the circuit when a filament fails, each filament, except the last, being in series with the operating coil of a relay, and each operating coil being associated with a holding coil which is connected across the flashing-switch. Filament 1 is in series with two relay coils 10, 13 which are connected in parallel and hold the contacts 9, 11 open when the filament is energized. When filament 1 fails the contacts 9 close and complete the circuit of filament 2 through coil 12 which serves to hold open the contacts 11 in the circuit of filament 3, and contacts 21 in the circuit of an alarm or signal lamp 23. Failure of filament 2 serves to close the circuits of filament 3 and alarm lamp 23. The flashing-switch 8, which operates in known manner, has a condenser 17 and variable resistance 19 in parallel with the operating coil 16 to provide adjustment of the flashing period. In a modification the successive control of the circuits of the several filaments is effected by a ratchet switch with an electromagnet acting in opposition to a spring which steps a ratchet wheel round when the circuit of a filament is broken. The filaments are sufficiently close to employ the same lens system ; alternatively, the position of a filament relative to the lenses may be altered by relayoperated means combined with the filament changing relays.
Patent GB-437176-A (GB)
Title: Improvements in and relating to hydraulic operating mechanism
IPC: F15B15/18
Filed: 1935-06-07
Abstract: 437,176. Hydraulic transmission of power. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. June 7, 1935, No. 16607. Convention date, June 12, 1934. [Class 69 (ii)] In hydraulic operating mechanism such as described in Specifications 376,058 and 385,042, a sleeve 29 surrounds the shaft 24 and extends from a point above the liquid surface to a point below the openings 23 in the tubular member 22, in order to prevent the introduction of air into the impeller 19. Further, the piston 14 towards the end of its return stroke acts through a spring 35 and against a spring 36 to seat a baffle plate 31 on the ports 21 and thus prevent shocks.
Patent GB-780889-A (GB)
Title: Improvements in or relating to the manufacture of tube elbows
IPC: B21C37/28
Filed: 1955-06-09
Abstract: 780,889. Making tube elbows; forging-dies; bending-dies; cores. HUET, A. June 9, 1955 [June 16, 1954; May 18, 1957], No. 16648/55. Classes 83 (2) and 83 (4). A method of making a tube elbow having a tubulure or pipe union on the outside bend of the elbow comprises compressing a heated elbow of bend radius greater than that of the elbow to be made by two dies which bring the legs of the elbow together and allow metal of the outside of the bend to be displaced to form a bulb which, if the outside of the bend has not previously been formed with an aperture, is then apertured to form a tubulure. An elbow a, filled with sand and heated over a zone A, Fig. 1, and, at a higher temperature over a zone B, and, if desired, at C and D, is held between parallel jaw b, c, Fig. 4. Dies d, e press the legs of the elbow together on to a die f, the metal of the outside of the bend being displaced through an opening h left between the dies to form a bulb g. The bulb is then apertured and finally shaped to form a tubulure. In a modification, Fig. 8, a circular aperture is formed in the outer part of the elbow prior to compression and a mandrel k is inserted in the aperture so that the displaced metal, on compression by the dies d, e, flows along the mandrel to form a tubulure l. In another modification, Fig. 10, an elbow a2 previously formed with a bulb m is compressed by dies d<SP>1</SP>, el, having faces inclined to the legs of the elbow to form an elongated bulb. An elbow having a previously apertured bulb may be bent with a mandrel in the aperture. The dies d<SP>1</SP>, e<SP>1</SP> may be hinged so as to straighten during compression to take up a position parallel to the legs of the elbow.
Patent GB-1111465-A (GB)
Title: Chlorinated polyethylene waxes
IPC: C08F8/20
Filed: 1966-04-15
Abstract: Polyethylene waxes of molecular weight up to 18,000 are chlorinated in an aqueous slurry having a solids content of not more than 22 weight per cent, the wax being in the form of particles having an average diameter not more than 600 microns, at a temperature of not more than 70 DEG  C. until the chlorine content of the wax reaches a desired value of up to 75% by weight of the chlorinated wax, while simultaneously contacting the slurry with 0.05 to 0.75 weight per cent of oxygen based on the unchlorinated polyethylene, the addition of the oxygen being completed before the chlorine content of the wax reaches 45 weight per cent. Preferred waxes are telomers of ethylene with C1- 10 alkanols, particularly isopropanol.  The slurry preferably contains 5 to 10% of wax particles of diameter not more than 400 microns, and the reaction is preferably effected at 45 DEG to 60 DEG  C. in the presence of 0.09 to 0.25% of oxygen which may be added with the first 10% of chlorine.  The products may be stabilized with metal salt, phosphite and epoxy stabilizers and used in coating compositions.
Patent GB-166918-A (GB)
IPC: H01H23/16
Abstract: 166,918. Tucker, J. B. Oct. 21, 1920. Switches, quick-action. - A quick-action tumbler switch comprises an operating-lever a pivoted in the bridge b, and a contact arm d pivotally connected to a depending arm c of the operating-member at g. Upon a trunnion axis s of the contact member is mounted a rod f, over which slides a coiled spring, the ends of which are interposed between the axis s and an axis e of the arm of the operating-member, both of which axes are eccentric to the axis of the support of the operating-member and the pivotalsupporting axis g between the operating and contact members. The movable switch contacts are secured to and insulated from the contact member d, and co-operate with fixed contacts mounted in recesses of the switch base. Movement of the operating member carries the rod f over a dead-centre, after which the expansion of the spring causes a quick action. Positive actuation of the contact member is ensured by the co-operation of the shaped edges of contactmember d and adjacent portions of the stationary bridge-piece b; the trunnion axis s may also be adapted positively to engage adjacent projections of the central switch-base recess, to assist in the switching movement.
Patent GB-264124-A (GB)
Title: Improvements in the manufacture of glycols
IPC: C07C31/20
Filed: 1926-07-05
Abstract: 264,124. Carbide & Carbon Chemicals Corporation, (Assignees of Curme, G. 0.). Jan. 7, 1926, [Convention date]. Glycols are made by heating chlorhydrins with caustic alkali in the presence of water under conditions adapted to prevent the escape from the reaction mixture of any substantial proportion of the corresponding olefine oxide. Sodium chloride may be added to the reaction mixture. In an example ethylene glycol is obtained bv heating ethylene chlorhydrin in a pressure vessel with caustic liquor from electrolytic cells containing undecomposed salt. The process may be run continuously, the reacting substances being mixed and passed through a conduit and discharged into a continuous still.
Patent GB-628196-A (GB)
Title: Improvements in or relating to gas burners
IPC: F23D14/06
Filed: 1947-06-26
Abstract: 628,196. Igniting gas burners. BROCKHOUSE & CO., Ltd., J., and BENBOW, J. E. June 26, 1947, No. 16848. [Classes 75(i) and 75(iii)] In a gas burner having a plurality of spaced flame ports a passage open along one side to the surrounding air connects the flame ports so that on igniting the gas at any one port a flame travels along the connecting passage to ignite the gas at the other flame ports. Four flame ports 14 provided with heat resistant linings 15 are formed in a mushroom-shaped casting 11, gas being supplied through a central passage 13 in the stem of the casting. On the lower face 16 of the head of the casting- an annular groove 17 of truncated wedge section and having its walls diverging downwardly towards its open side is formed so as to extend through each of the flame ports. On igniting the gas at any one port 14 the flame travels backward into the groove 17 and then along the groove to ignite the gas at the other three ports. A plurality of passages connecting the flame ports may be provided, for example a pair of concentric annular grooves 17. The open side of the connecting passage may be continuous as in the case of a groove or the opening may be constituted by a number of spaced holes. Fig. 1 shows a gas heating appliance comprising a number of auxiliary burners 10 constructed in accordance with the invention and a number of main burners 24. The burners are arranged alternately in rows on a hollow rectangular casing 22, each main burner being disposed opposite to a flame port of at least one auxiliary burner. The arrangement is such that if any one burner is ignited the flame travels to all the burners. A thermostatically controlled main gas supply valve cutting off the supply to both main and auxiliary burners may be provided in conjunction with a permanently lit pilot burner which may be disposed opposite a flame port of one of the auxiliary burners or adjacent one of the main burners.
Patent GB-612782-A (GB)
Title: Improvements relating to electric cut-out devices, particularly for electric immersion heaters
IPC: H01H37/52
Filed: 1946-06-04
Abstract: 612,782. Temperature-responsive actuating-elements. NEWTON, A. E. June 4, 1946, No. 16860. [Class 64(ii)] [Also in Group XXXVII] In a thermalswitch for a vessel such as a kettle, the bimetal strip 12 is shaped as in Fig. 5, and has a main-part 13 located adjacent the vessel-socket 1. and a bent-over end 14 tapering towards one another, so that the time taken for the switch to open in the event of the vessel being switched on dry is reduced, without affecting the operation of the cut-out when the vessel boils dry. When the vessel is switched on dry the end 14 of the strip 12 will not have acted in opposition to the main part 13 to any appreciable extent before it engages the insulating, and preferably adjustable, end 16 of a flexible switch-blade 15, and separates contacts 7, 8. In the event of the vessel boiling dry, however, the end 14 will have warmed up and flexed inwardly, so as to delay the separation of the contacts. The blade 15 and a rigid blade 17 are mounted between insulating washers 20, 21 on a rivet 18, the head of which engages the bi-metal strip 12, and the unit thus formed is removably secured to the vessel-socket 1 by a bolt 19. The main and turned-over parts of the strip 12 may alternatively be parallel and connected. by a portion of reduced crosssection, Figs. 9, 10 (not shown). The end of the socket 1 is closed by an insulating disc 6 carrying the plug pins.
Patent GB-1503862-A (GB)
Title: Metering and proportioning valve arrangement in a vehicle brake system
IPC: B60T17/22
Filed: 1976-04-26
Abstract: 1503862 Vehicle brake proportioning valves KELSEY-HAYES CO 26 April 1976 [19 June 1975] 16873/76 Heading F2F A valve 44 meters and proportions the hydraulic pressure to front disc brakes so that the pressure supply is cut-off at a first inlet pressure and reapplied at a second (higher) inlet pressure which, e.g. corresponds with the pressure needed to counteract the biasing springs in rear drum brakes. High inlet pressures result in only a proportionate increase in front brake pressure. The valve assembly 44 comprises a valve plate 180 which seats against a face 164 although fluid communication between the inlet 30 and outlets 34, 36 is allowed through the centre of the valve plate. Inlet pressure therefore also acts on a diaphragm 232 and at the first pressure a valve cap 152 closes the central opening of the valve plate. The valve is kept closed by a spring 270 acting on a spool 250, until the second pressure is reached when the valve plate lifts from the face 164 and on increasing pressure the area difference between the spool 250 and the bore 103 results in a proportion only of inlet pressure being transmitted to the outlets 34, 36. When inlet pressure is released, the outlet pressure remains initially constant until the valve cap 152 lifts from the valve plate 180, and thereafter the inlet and outlet pressures are equalized. A brake pressure indicator 110, 116 is provided, and on failure of the rear brake pressure the spool 110 moves to the right, relieving the pressure of the biasing spring 150 so that full inlet pressure is applied to the front brakes. The spool 110 is self-centring on reapplication of balanced inlet pressures by a ring piston 124.
Patent GB-809993-A (GB)
Title: Improvements in internal combustion engine downdraught carburettors
Inventor: MENNESSON ANDRE LOUIS
IPC: F02M19/035
Filed: 1957-05-28
Abstract: 809,993. Carburetters. SOLEX. May 28, 1957 [June 5, 1956], No. 16933/57. Class 7(3) The end of the conduit 11 for introduction of the primary fuel air mixture into the induction pipe has an annular flange 13 substantially at right angles to the direction of the air stream. Improved atomization is obtained when the velocity of the air stream is low. In a modification the conduit 11 is bent so that its downstream portion is parallel to the direction of the air stream. The flange may have a diameter ranging from 25 per cent to 50 per cent of the diameter of the induction pipe.
Patent GB-1365602-A (GB)
Title: Spray nozzles
IPC: A62C31/03
Filed: 1972-04-12
Abstract: 1365602 Spray producers L D BARTLETT 12 April 1972 [13 April 1971] 16940/72 Heading B2F A nozzle assembly for attachment to a liquid supply hose, e.g. a garden hose, comprises a main body portion 10 having an inlet port 14 for attachment to the hose and an outlet port 16, a rotatable nozzle head 19 having a plurality of nozzle orifices therein and including a planar wall juxtaposed relative to a planar wall 11 of the main body portion, a recess 27a in the main body portion surrounding said outlet port 16, sealing means in said recess urged into sealing engagement with the nozzle plate 19, means 20 to retain the plate 19 in contact with the sealing means, and means 33-36 to locate the nozzle head 19 in any one of a plurality of angularly-spaced positions in each of which a respective orifice is aligned with the outlet port 16. The sealing means is spring-biased and comprises an O- ring (24), Figure 2 (not shown) and cylindrical sealing member (28b). An arcuate recess 37 which registers with the nozzle orifices of the head 19 which are not in register with the outlet port 16, serves as a relief passage for any water leaking past the sealing means (24, 28b) and which would otherwise squirt out radially from between the planar walls. A spring-biased ball 36 locates in a recess 34 in the plate 19 to locate a nozzle orifice over the outlet port 16. The nozzle orifices of the nozzle plate 19 include a full-flow aperture (45), Figure 4 (not shown), a conical-spray aperture (46), Figure 6 (not shown), a highvelocity spray aperture (47), and a fan-shaped spray aperture (48). Several interchangeable elements of varying sizes may be provided for the conical-spray aperture (46). A socket (44), Figure 5 (not shown), is provided in the main body portion 10 to receive a hooked portion (43) of a stake (42) to position the nozzle assembly on a lawn.
Patent GB-1046434-A (GB)
Title: Electrolytic treatment of steel sheets in an acid chromic anhydride bath
IPC: C25D11/38
Filed: 1963-04-30
Abstract: Sheet steel is made corrosion-resistant by electro-deposition using a dilute solution of chromic anhydride containing 10 to 50 g.p. litre and H2SO4 up to 5% of the chromic anhydride present. A current density of 10 to 15 A.S.Dm. is applied at 15 DEG  to 50 DEG C for 5 to 10 secs.  It is stated that a layer of metallic Cr is formed on which is formed a layer of chromium compound e.g. chromium hydroxide.