baber/WOPTO huggingface dataset:
Patent GB-968110-A (GB)
Title: Polymerization of silazanes by selected catalysts
IPC: C08G77/00
Filed: 1961-08-31
Abstract: Silazanes, i.e. the polymeric reaction products of a di-, tri- or tetra-halosilane with ammonia or a primary amine, as disclosed in U.S.A. Specifications 2,462,635, 2,579,417 and 2,579,418, are further polymerized by subjecting them to the action of an inorganic acid salt of Cu, Ag, Au, Zn, Cd, Hg, Fe, Co or Ni.  The salts may be derived from HCl, H2SO4, HNO3, HClO4 or H3PO4. The catalyst is used e.g. in an amount of 1 to 10% by weight of the silazane, and the reaction is effected at temperatures up to 220 DEG C. for 1 to 24 hours.  In examples, liquid hexamethylcyclotrisilazan was heated at 200 DEG C. for 23 hours (1) with HgSO4 to yield a viscous liquid, and (2) with CoCl2 to yield a colourless liquid containing needles; (3) the ammonolysis reaction product of (CH3)2SiCl2 and CH3SiCl3 was heated for 16 hours at 200 DEG C. with AgNO3 to yield a dark silvery brown solid.
Patent GB-950865-A (GB)
Title: Improvements in and relating to thermoelectric devices
IPC: H01L35/16
Filed: 1960-09-12
Abstract: A thermoelectric device component e.g. a thermocouple, has as its negative element an alloy of silver and selenium containing 55 to 68 atom per cent of silver, said alloy having an absolute value for its thermoelectric power of at least 120 microvolts per degree Centigrade and an electrical resistivity of less than 15 X 10-4 ohm. cm.  The term "alloy" includes stoichiometric amounts of silver and selenium as well as small excesses, such as 0.5 atom per cent, of either metal.  The silver selenide alloy may be prepared by reacting silver nitrate and zinc selenide in an aqueous medium or by melting silver and selenium together.ALSO:An alloy of silver and selenium containing from 55-68 atom per cent silver, said alloy having an absolute value for its thermoelectric power of at least 120 microvolts per degree Centrigrade and an electrical resistivity of less than 15X10-4 ohm cm., is used as the negative element of a thermoelectric device, e.g. a thermocouple.  The term "alloy" includes stoichiometric amounts of silver and selenium as well as small excesses, such as 0.5 atom per cent of either metal.  The silver selenide alloy may be prepared by reacting silver nitrate and zinc selenide in an aqueous medium or by melting silver and selenium together.  The positive thermoelectric element may be bismuth or lead telluride.
Patent GB-409410-A (GB)
Title: Improvements in and relating to electrical discharge devices for production of luminous effects
IPC: H01J17/00
Filed: 1932-11-07
Abstract: 409,410. Discharge lamps. FREEDMAN, P., 6, Hillside Gardens, Highgate, London. Nov. 7, 1932, No. 31367. [Class 39 (i).] A lamp is provided with one or more main electrodes through which is adapted to pass the whole or the greater part of the discharge current, the main electrodes extending individually or in conjunction with others over substantially the entire tube length and closely adherent, over substantially half their surface, to the inner glass walls of the tube. The lamp may be provided with semi-cylindrical electrodes 6, Fig. 1, separated by a gap 8 and each of which extends over half the length of the tube, or with electrodes 10, Fig. 3, which extend over the entire length of the tube and are separated by a gap 12, or with an electrode 16, Fig. 4, which extends over the entire length of the tube and between cylindrical electrodes 14 which are of the same polarity and consist of nickel or iron containing the metal or oxide of strontium or barium. The electrodes may be formed by depositing a silver film on to the glass walls by precipitating silver from ammoniated silver nitrate by means of Rochelle salt, or by wetting the walls with a solution of platinum chloride which is heated to form a platinum film. The metallic films may be coated electrolytically with metal, such as silver, and subsequently coated with one or more of the oxides of calcium, barium and strontium, e.g. by coating electrolytically with the carbonate of the metal and heating to form the oxide. Alternatively one or more of the metals sodium, potassium, lithium, rubidium, and caesium may be introduced into the tube to form a film on the electrode surfaces. The lamp may be filled with one or more of the gases neon, argon, helium with or without a metallic vapour such as mercury, and may be bent to form letters or other designs.
Patent GB-853203-A (GB)
Title: Improvements in or relating to electromagnetic devices for conveying or restraining rotary motion
IPC: F16D27/08
Filed: 1957-10-08
Abstract: 853,203. Friction clutches. POWNALL, G. N. DU T. Oct. 8, 1958 [Oct. 8, 1957], No. 31390/57. Class 80 (2). [Also in Groups XXXII and XXXIV] A main friction clutch, brake, or damper, comprising plates 45, 42 respectively splined to a driving or stationary housing 10 and a hub 23 fast on a driven or braked shaft 12, is engaged when a winding 17 is energized to engage a pilot electromagnetic friction clutch or brake 15, 57 between the housing 10 and a cam sleeve 59 rotatable and slidable on the shaft 12 to actuate a presser plate 41 through the sleeve 59, facial cam surfaces 60, a follower sleeve 62 axially slidable in the hub 23 by means of pins 63, a spherically seated thrust ring 65 and levers 51 pivoted on the hub 23. In operation, when the winding 17 is first energized, the armature 57 is drawn into contact with an asbestos friction washer 20 protruding from the element 15, which washer determines the minimum air gap, and is thereby rotated relatively to the follower sleeve 62 until clearance between the plates 45 and 42 is taken up, the air gap being automatically adjusted to an optimum width by.reactionary movement of the cam sleeve 59. A spring-loaded radial detent 54 carried by the hub 23 then engages serrations 55 on the cam sleeve 59 to circumferentially detain the sleeves 59, 62, with respect to each other, in the position reached as a result of said reactionary movement so that upon de-energization and subsequent energization of the winding 17 plates 45, 42 are respectively unloaded and loaded without relative rotation of the sleeves 59, 62 until such time that plate wear again permits contact of the armature 57 with the washer 20. The device may be used as a damper for vehicle suspensions, the housing 10 being fixed to the vehicle frame and an arm of the shaft 12 being linked, to a sprung axle. In such an arrangement the plates 45, 42 may be constantly spring loaded and the electromagnetic loading may be applied at will, when supplementary torque resistance is required, or during rebound periods.
Patent GB-533561-A (GB)
Title: Improvements in or relating to helmets
IPC: A42B3/32
Filed: 1939-12-04
Abstract: 533,561. Helmets. WRAY, G. S. Dec. 4, 1939, No. 31403. [Class 63] A detachable extension for a, steel helmet comprises a portion B preferably of light weight metal provided with an aperture so that it may, fit over the crown of the helmet and, rest on the brim, and a portion C of heavier metal, which may be perforated. The back of the extension carries a U-shaped clip, E to engage. under the rim of the helmet. The. front of the extension may be secured by a hook at the rim urged rearwards by a spring, or by a stud D having a pivoted lower portion provided with a rubber buffer and retained in operative position by a spring.
Patent GB-636537-A (GB)
Title: Improvements in hydraulic jacks
IPC: B66F3/30
Filed: 1946-10-22
Abstract: 636,537. Hydraulic machines. GRATZMULLER, J. L. Oct. 22, 1946, No. 31404. Convention date, Oct. 25, 1945. [Class 69 (ii)] [Also in Groups XXVI and XXX] Passage of the liquid in the working space of a hydraulic jack between the piston and cylinder is normally prevented by a cooling device having a lost-motion connection with the piston so that when the jack is fully extended the sealing device is held by an abutment in the cylinder to release the pressure. The sealing device comprises a metal ring 5 carrying sealing material 6, 7 and mounted with freedom for axial movement on a reduced extension 4 of the piston 3, being held on this extension by a washer 8 and stud 11. In operation the pressure in the working space 23 presses the sealing device 5, 6, 7 against the piston 3 so that the seals 6, 7 prevent the liquid passing to the upper space 14 of the jack. When the jack is so far extended that a piano wire 13 in a groove 12 in the cylinder holds the sealing device, continued movement of the piston 3 permits liquid to pass behind the seal 6 into the space 14 which communicates at 15, 16 with the interior 24 of the casing 1, used as a reservoir. The operating pressure is supplied by a reciprocating pump 18 having inlet valves 20 and an outlet valve 21 which may be opened to release the jack. Specification 634,312, [Group XXVI], is referred to.
Patent GB-1247614-A (GB)
Title: Improved therapeutic and diagnostic allergenic extract and process for preparing same
Inventor: ESPEY KERMIT MAYNARD
IPC: A61K39/36
Filed: 1969-06-20
Abstract: 1,247,614. Allergen extracts. MILES LABORATORIES Inc. 20 June, 1969, No. 31428/ 69. Heading A5B. Extracts of substances capable of producing an allergic response are produced by extracting the substance with a mixture of water and an organic solvent which contains basic nitrogen, e.g. a heterocylic tertiary amine such as pyridine, quinoline, lutidine, collidine or picoline, separating the liquid from all solid material and volatilising it to produce a dry, stable, powder. The liquid extract may be sterilized, e.g. by filtration and may be used in curative and diagnostic preparations. The extract may be further treated by redissolving the powder in water and precipitating an active substance from the solution by addition of a precipitating agent such as potash alum.
Patent GB-898514-A (GB)
Title: Jet propelled aircraft
IPC: B64D27/10
Filed: 1960-09-13
Abstract: 898,514. Controlling jet propelled aircraft. HAMBURGER FLUGZEUGBAU G.m.b.H. Sept. 13, 1960 [Sept. 17, 1959], No. 31439/60. Class 4. An aircraft, having a plurality of jet power units 1, 2 in the tail is characterized in that the jet pipes 3, 4 of power units 1, 2 converge to a jet deflecting device which, when the jet is deflected and in the event of failure of a power unit, serves to distribute the remaining jet substantially uniformly and symmetrically. In Fig. 1, pivotable flaps 7, 8 close the lateral outlet openings 9, 10 respectively, and the efflux gases pass unobstructed in the direction of the arrows. Fig. 3 shows flaps 7, 8 in the position in which they deflect the gases through openings 9, 10, and flap 6 having been pivoted to the position in which it closes the thrust tube 3 in the event of failure of power unit 1. Three other embodiments are described, one having similar flaps to those shown in Fig. 1, another having pivotable outlet ducts and two central flaps, and another, in which the jet streams are not kept separate, which uses a pair of eyelids, one central flap and a variable cross-section outlet nozzle.
Patent GB-520459-A (GB)
Title: Improvements in and relating to retractive electric switches
IPC: H01H21/28
Filed: 1938-10-31
Abstract: 520,459. Retractive switches. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 31, 1938, No. 31453. Convention date, Oct. 30, 1937. [Class 38 (v)] A switch suitable for operation by the door of a refrigerator comprises an insulating operating member 20 having trunnions 21 engaged in recesses in an insulating housing 11 provided with a central slot in which the member 20 can move. Normally a door holds member 20 in the position shown. Oh opening the door, a spring 14 moves member 20 to cause a cross pin contact 23 to bridge a pair of contacts 27 mounted in grooves in the housing to light a lamp. The switch parts are held in position by a cover 39 having an insulated lining 42, the cover having lugs 40 which are sprung into recesses in the casing. Attachment of leads to the contacts 27 is effected by passing the bared end of the conductor through a hole in the upper end of the contact and then punching the side of the contact to crush the conductor in the hole. This forms a recess into which the lead is bent before inserting in the switch housing.
Patent GB-628109-A (GB)
Title: Improvements in or relating to printing ink and method of printing
IPC: C09D11/02
Filed: 1945-11-22
Abstract: A composition for use as a heat-drying printing ink drying under atmospheric conditions ranging from 100 per cent humidity downwards, comprises a pigment, a water-soluble synthetic resin and a hydroscopic solvent having a b.p. in the range 250-475 DEG  F. Solvents specified are glycols, glycols ethers, diethylaminoethanol. Water-soluble resins specified are phenol-, urea-, melamine-formaldehyde resins and alkyd resins which are convertible to the insoluble state by the heat employed for drying the printed web.  Insoluble resins may be used in conjunction with solvents therefore.  The following compositions are specified in examples: (8) water-soluble phenol-formaldehyde resin, ethylene glycol, triethanolamine, carbon black, lampblack; (9) alkyd resin, ethylene glycol, triethanolamine, carbon black, lampblack; (10) rosin modified polyhydric alcohol-polybasic acid resin, methyldiethanolamine, diethylene glycol, carbon black, alkali blue; (11) as in (10) but employing a rosin-maleic acid resin; (12) aryl sulphonamideformaldehyde resin, " carbowax, " methyldiethanolamine, diethyleneglycol, carbon black; (13) mannitol borate resin, phenol-formaldehyde resin, ethylene glycol, triethanolamine cerise, lithol red.
Patent GB-381381-A (GB)
Title: An apparatus for the transference of articles particularly in continuously operatinggalvanising plant
IPC: B65G49/02
Filed: 1931-11-14
Abstract: 381,381. Endless chain conveyers. PFANHAUSER, W. A. F., 76, Torgauer Strasse, Leipsic, Germany. Nov. 14, 1931, No. 31563. [Class 78 (i).] In a conveyer for transferring articles in continuously operating plant for galvanizing, electroplating, &c. the chain 1 has guide rollers (not shown), the axle pins 3 of which are mounted within the links and in openings in forks 5 embracing the links and supporting grips 13, 14 for releasably securing the carriers 9 for the articles. Each link has a removable part 4 which is secured by screws. The grips are connected to the forks by hangers 8, and are made in two parts pivoted together at 15 and normally held together by a spring 17 to embrace pins 12 on the carriers. When the carriers are deposited on a guide rail 10, they pass below a tongue 11 which effects their detachment from the grips as the chain moves upwards. The carriers are traversed along the rail 10 by projections 19 on a driving chain 18. At the end of the rail, each pin 12 passes through a gap in the part 14 of a grip carried by another chain 1 travelling upwards, and the article is removed from the bath.
Patent GB-604069-A (GB)
Title: Improvements in or relating to methods of, or machines for, operating upon workpieces such as hides or skins
IPC: C14B1/02
Filed: 1945-11-23
Abstract: 604.069. Glazing machines. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation.) Nov. 23, 1945, No. 31578. [Classes 42(ii) and 76] Work-pieces such as hides and skins are glazed by feeding slowly between a firm and smooth work-treating surface having a thermal conductivity substantially below that of glass, and moving the worktreating surface in contact with the work-piece at such a speed to cause slippage and consequent generation of heat, thereby effecting the glazing. In the machine shown the work-piece is fed on a conveyer belt 42 between a glazing roll 8 and a presser-bar 22; the roll 8 is mounted in arms 10 which are hinged to the frame of the machine and pressed downwardly by the action of springs 18 on rods 16 pivoted to the free ends of the arms 10. To compensate for bowing of the roll 8 due to variations in the thickness o f the skins, the bar 22 may be arranged slightly out of parallel with the roll 8; for this purpose the bar is fulcrumed at its centre on a bolt 36, Fig. 4, and adjusted by a screw 38. Depression of the treadle 112 releases pressure on the roll 8 by moving latch 110 and allowing member 114 to rotate under the action of spring 122, lifting the rods 16 and arms 10; pressure is restored by operation of the lever 128. The conveyer belt 42 is driven by an electric motor through gearing mounted on shafts 68 and 49, and this gearing also serves to rotate the roll 8 and a feed roll 82 which directs the treated work-piece on to a table 84. The tension of the belt 42 is controlled by a roller 160 adjusted by nuts 169, 171. The surface of the glazing roll is preferably made of a thermosetting plastic material, e.g. a phenol-formaldehyde resin on a paper base, phenol-furfural, or urea-formaldehyde with an alpha-cellulose filler; other materials mentioned are dense wood, wood impregnated with plastic material, paper, and vulcanized fibre. Helical grooves may be provided on the surface of the roll to effect lateral spreading of the work-piece. The roll is cooled by leading air through a duct 24 into a casing 26, Fig. 4. In a modified form of the machine, Figs. 6-8, not shown, the work-supporting member is constituted by a slowly rotating roller mounted in blocks which slide vertically in standards. The conveyer belt is arranged to lead the work-piece back to the operator.
Patent GB-527424-A (GB)
Title: Improvements in excavating or dredging apparatus
IPC: E02F3/18
Filed: 1938-11-01
Abstract: 527,424. Excavators or dredgers; conveyers. BLEICHERT - TRANSPORTANLAGEN GES. Nov. 1, 1938, Nos. 31620/38, 31622/38, 31623/38, 31624/38, 1773/39, 1774/39, 1775/39 and 1776/39. Convention dates, Nov. 1, 1937, Feb. 8, 1938, Feb. 10, 1938, Feb. 25, 1938, Feb. 8, 1938, Feb. 8, 1938, Feb 25, 1938 and Feb. 25, 1938. [Class 68 (i)] [Also in Group XXX] In excavating or dredging apparatus, having an excavating member rotating on a boom pivoted for vertical and traversing movement and an endless conveyer inside the boom for delivering the spoil, the excavating member isglobular and consists of arcuate scoops fixed to a ring at the front end of the boom and conveying forwardly so as to act in directions axially of the boom and laterally thereof. In Figs. 1 and 2, the boom 4 is supported on endless tracks 1 driven by independent motors and may be swung laterally on a guide 5a by an electromotor while a motor 9 acts through screw gearing to swing the boom vertically between pillars 6. Inside the boom is a readily-removable belt conveyer 10 driven by a motor 11 the scoops 13 of the excavator delivering through a chute to the conveyer which dumps on to a further conveyer. The scoops 13 converge forwardly and are connected at the rear to a gear ring 17 driven by motor 21 through gearing 20 and pinion 18. Flaps 25, 26 permit cleaning, lubrication and adjustment. The conveyer belt may have flanges vulcanised thereto as in Fig. 4, and be supported by idlers 28, 29 carried by separate or connected supports 30, 31. In Fig. 6, the excavator is reversible, twin scoops 32 being pivoted so that the leading scoops project beyond the trailing scoops. In another form, the excavator is open at the front. The boom may be telescopic, a loop permitting corresponding adjustment of the conveyer belt. The edges of the scoops may be helical with the pitch of the helix increasing rearwardly. The machine may be connected to a Diesel-electric generator also used for lighting.
Patent GB-1119534-A (GB)
Title: Warning apparatus for temperature rises
Inventor: KING BERTRAM THOMAS
IPC: G08B17/06
Filed: 1965-07-23
Abstract: 1,119,534. Temperature alarms. GEOPHYSIK VEB. 23 July, 1965, No. 31623/65. Heading G4N. The sensing element of a temperature alarm comprises an inductor with a ferromagnetic core, included in a resonant circuit, which is coupled across the output of a constant frequency oscillator. Changes in the level of the output signal due to changes in the resonant frequency are differentiated to produce a signal sufficient to strike a gas filled valve when a predetermined rate of rise in temperature is attained. A relay in the valve anode circuit is thus energized to complete an alarm circuit. A number of sensing coils may be provided for different temperatures.
Patent GB-1148101-A (GB)
Title: Improvements in or relating to disposable cleaners for cleaning metals
IPC: C11D17/04
Filed: 1966-07-14
Abstract: 1,148,101. Cleaning pads. MILES LABORATORIES Inc. 14 July, 1966 [1 Sept., 1965], No. 31760/66. Heading A4F. [Also in Divisions C4 and C5] A disposable cleaner for cleaning metals comprises an absorbent, flexible carrier which is impregnated with tartaric acid and a water soluble alkali metal or alkaline earth metal salt of an inorganic acid. The carrier, which may be a cloth or of paper or plastics, may be also impregnated with mild abrasives such as silica, jewellers rouge, whiting, talc and magnesium oxide; with film forming or anti-tarnish agents comprising oleic acid and other fatty acids; with wetting agents comprising non- ionic detergent; with humectants such as glycerin or polyethylene glycol and with anti-oxidants and corrosion inhibitors. The cleaner may be made by impregnating the carrier with a solution comprising at least the tartaric acid and the alkali metal salt, passing the impregnated carrier between rollers, and drying the impregnated carrier. The alkali metal or alkaline earth metal salt may be a chloride, sulphate, nitrate or fluoride of sodium potassium, calcium, magnesium, barium or strontium.
Patent GB-1067860-A (GB)
Title: Hydrotherapy equipment
IPC: A61H33/00
Filed: 1964-08-05
Abstract: 1,067,860. Hydrotherapeutic baths. JACUZZI BROS. Inc. Aug. 5, 1964 [Aug. 5, 1963], No. 31891/64. Heading A4N. [Also in Divisions B2 and F1] In a hydrotherapeutic bath, in which water is circulated through a nozzle, the nozzle and circulation intake are arranged in a housing removably mounted on the wall of a bath. As shown, housing 18 is supported by rubber suction plate 22 on wall 26 of a bath. A perforated intake grating 28 surrounds the lower part of the housing 18 and is conected to suction pipe 44 of an electrically driven centrifugal pump unit (Figs. 4 and 5, not shown). A co-axial delivery pipe 46 is connected to chamber 34 and water passing through throat 60 of nozzle 38 may entrain air from ports 64, which are connected to an adjustable air inlet (72) (Fig. 1, not shown). The nozzle is swivelably mounted in ball and socket joint 48 and the flow of water may be adjusted by screwing member 62 towards and away from fixed boss 58. A free-standing pump unit is described and the pump may be primed by connecting inlet 120 to the water supply to operate a float switch and allow the pump motor to be energized.