baber/WOPTO huggingface dataset:
Patent GB-392422-A (GB)
Title: Improvements in lighting apparatus
IPC: F21V17/04
Filed: 1932-10-04
Abstract: 392,422. Reflectors &c. MAIN, G. 91, Avenue de Clichy, Paris. Oct. 4, 1932, No. 27520. Convention date, Nov. 4, 1931. [Class 75 (ii).] A reflector 2, whose general shape is such that it fits upon a lamp bulb 1, is connected with the periphery of the bulb by suitable packing members, which may consist, as shown, of asbestos rings 3 mounted in recesses of the reflector and embedded in a cement of synthetic resin or the like. The reflector consists of stepped reflecting rings 2a, connected together by cylindrical or conical surfaces 2b. A lower reflector 4, which may consist of stepped reflecting rings 4a connected together by cylindrical or conical portions 4b, is secured to the reflector 2 bv means of a nut 14 which threads on to the reflector 4 and rests on a shoulder 10 on the reflector 2, conical surfaces 11, 12 on the two reflectors fitting against one another. The nut 14 is of U-section so as to conceal the joint. A coloured or diffusing disc 17 is held at the bottom of the reflector 4 by an elastic or split ring 18. The lower reflector may be replaced by a cylindrical coloured glass sleeve or the like, transparent or externally silvered, or of ground or opal glass, or comprising reflecting prisms to afford a symmetrical or asymmetrical distribution of light. The glass may be coloured throughout, or have an opal layer with a coloured inner or outer layer, with or without a laver of another colour on the other side. Alternatively, the sleeve may be of polished or dull metal.
Patent GB-1076563-A (GB)
Title: Improvements in or relating to electric amplifiers with a non-linear dielectric element
IPC: H03F/
Filed: 1964-07-03
Abstract: 1,076,563. Circuits employing non-linear capacitors. CESKOSLOVENSKA AKADEMIE VED. July 3, 1964 [July 10, 1963 (4)], No. 27530/64. Heading H3B. An amplifier comprises a non-linear dielectric element C N  (tandel) heated by a H.F. voltage G connected in series with a load Z 1  across a D.C. input, the output across the load Z 1  being applied over a resonant circuit O, tuned to an even harmonic of the H.F. supply frequency, to detector D and the output of the amplifier being developed across load Rd, Cd. In the absence of a D.C. input the voltage across the capacitor CN is distorted by the odd harmonics and as the D.C. input is increased the distortion is due to the even harmonics, Fig. 1 (not shown), which latter content causes the voltage across series or parallel resonant circuit O to increase. In order that the polarity of the output voltage is the same as that of the input voltage the arrangement of Fig. 3 (not shown) may be employed in which a second resonant circuit (O 1 ) tuned to an odd harmonic of the supply is connected across the load Z 1  and the rectified voltages appearing across the load circuits (Rd 1 ) (Cd 1 ), (Rd 2 ) (Cd 2 ) are subtracted. A bias source (B) is connected to the input circuit and is of such value that in the absence of the input voltage the output voltage is zero. In order to increase the band-width of the amplifier the dependence of the maximum value of the current through the dielectric element on the D.C. voltage applied may be employed, Fig. 4 (not shown). In the circuit of Fig. 5 (not shown), which is basically the same as that of Fig. 1, except that a voltage having a substantially lower frequency than the highfrequency heating voltage is superimposed on the heating voltage, a detector and load circuit is inserted between the load impedance Z 1  and resonant circuit. The voltage appearing across impedance Z 1  represents the voltage form of the high-frequency current which is modulated in the absence of a D.C. input voltage by a signal of twice the frequency of the superimposed L.F. component of the heating voltage. As the D.C. input voltage increases the high-frequency current is modulated by a signal with growing content of the modulating low-frequency component, the modulation envelope being demodulated by the detector and the series or parallel tuned circuit being tuned to the modulating low frequency. The increase of the resonant voltage in the resonant circuit appears as a D.C. output voltage across impedance Rd 2  Cd 2 . In order for the amplifier to follow any change of polarity of the input voltage two parallel or series resonant circuits may be employed, Fig. 6 (not shown), one circuit being tuned to the fundamental component of the modulating low-frequency signal and the second resonant circuit to the second harmonic of the low frequency.
Patent GB-1345593-A (GB)
Title: Synthetic lubricant for machining and chipless deformation of metals
IPC: C10M173/02
Filed: 1971-06-11
Abstract: 1345593 Lubricants MOLLCO PATENTVERWERTUNGS AG 11 June 1971 [18 June 1970 4 Sept 1970] 27584/71 Heading C5F A metal-working lubricant comprises an aqueous solution containing 0À1-90 wt. per cent of a mixture of (a) at least one 50-500 unit copolymer of ethylene oxide and a C 3 -C 8  alkylene or cycloalkylene oxide carrying sidechains with at least one of (b) 100-500 unit water-soluble copolymer of acrylic or methaacrylic acid and an acrylic or methacrylic acid ester; (c) 20,000-1,000,000 mol. wt. polyvinyl pyrrolidone; (d) polyvinylalcohol having mol. wt. greater than 5,000-1,000,000. The lubricant may have a viscosity not exceeding 50 cp. at 20‹ C., and may also contain corrosion inhibitors such as a phosphate, benzoate, oxalate, citrate, tartrate or salicylate of an alkanolamine. A glycol (5-50 wt. per cent, many specified) may also be present, as may benzoic acid, triethanolamine and/or morpholinc. The lubricant may be stored and used a concentrate. The side-chains of polymer (a) may as carry hydroearbyl, hydroxy, ether, ester or phosphate substituents.
Patent GB-284778-A (GB)
Title: Removing incrustation formed on metallic surfaces which are in contact with hot milk
IPC: B08B9/08
Filed: 1926-11-04
Abstract: 284,778. Seligman, R. Nov. 4, 1926. Pickling. - In a process for removing the incrustations formed on metallic surfaces which are in contact with hot milk, the surfaces are treated with an acid containing casein or gelatine, the latter acting as a protective agent to prevent or minimize the action of the acid upon the metallic surface itself. The acid may be a weak solution of medicinal ortho-phosphoric acid, and in an example the solution used contains 2 parts of ortho-phosphoric acid, 1 part of casein and 97 parts of water. The solution is heated to a temperature of 85‹-100‹ C. and may be circulated rapidly over or through the surface of the article by means of a, pump, or the article may be immersed in a bath of the solution which is kept in active circulation.
Patent GB-226000-A (GB)
Title: Improvements in folding chairs
IPC: A47C7/56
Filed: 1923-11-05
Abstract: 226,000. Moiseiwitsch, J. Nov. 5, 1923. Folding seats. - A folding chair comprises lateral legs or standards d<1>, d<2>, a seat member e hinged at f to the standard d<1> and adapted to be supported by the lug g when in use, a single back member h hinged to the standard d<1> at i and adapted to assume a horizontal position of use with its free end in contact with the face of the standard d<2>, and a link k, pivoted to the back at a point l between the pivot i and the free end of the back, the other end of the link being pivoted to an arm on the seat e. According to the Provisional Specification, a bolt may be provided, actuated by the weight of the occupant of the seat, for retaining the free end of the seat in connection with the standard d<2>.
Patent GB-1106435-A (GB)
Title: Improvements relating to mineral mining machines
Inventor: ANDERSON FORREST SYMINGTON
IPC: E21C25/14
Filed: 1965-07-01
Abstract: 1,106,435. Mineral-mining machines. ANDERSON MAVOR Ltd. 3 Oct., 1966 [1 July, 1965], No. 27859/65. Heading E1F. Angular adjustment of a loading cowl about the axis of rotation of a cutter drum cantilever-supported on a vertically swingable boom is caused by actuation of rams coupled to a cable fixed at the ends to the boom and jackmounting body of the machine and passed about appropriately positioned pulleys on the body, boom, and a cowl-mounting arm supported on the boom co-axial of the drum.
Patent GB-1355618-A (GB)
Title: Process for forming images
IPC: G03C5/56
Filed: 1972-06-14
Abstract: 1355618 Dye images FUJI PHOTO FILM CO Ltd DAI NIPPON PRINTING CO Ltd and E INOUE 14 June 1972 [18 June 1971] 27872/72 Heading G2C A supported layer of photo-sensitive organic colourant is imagewise exposed to light or heat, an imagewise change in colour thereby being produced, and the unexposed colourant is transferred to a receiver using pressure and heat. The exposed colourant may be subsequently transferred to a further receiver using pressure and heat (a higher temperature being employed). The supported layer may be 0À1-10 micron thick and may be produced by vacuum evaporation or coating from a solution in a volatile solvent. Examples of colourants, solvents and substrates are given.
Patent GB-172780-A (GB)
Title: Improvements in or relating to telephone transmitters
IPC: H04R1/14
Filed: 1920-10-01
Abstract: 172,780. Murray, R. L., and Telephone Manufacturing Co. (1920), Ltd. Oct. 1, 1920. Throat-operated and like members; throat sets; hand-combination sets; microphones. -Telephone transmitters of the kind which are held in contact with the throat or other vibratory surface are provided with one or more shields carried by the casing and adapted to bear on the throat &c. closely around that part on which the diaphragm or a pad thereon rests. In the form shown in Fig. 2, the transmitter is combined back to back with a receiver. The transmitter diaphragm 13 carries a cup 14 containing carbon pellets which are in contact with an electrode, 15 secured to a back plate 5. The diaphragm is held by a flanged ring 16 and is pressed outwards by a spring washer 20. The ebonite shield 18 is of elliptical shape and has an aperture through which the diaphragm protrudes. When in position the longer axis of the ellipse is vertical, and the shield thus prevents undue pressure of the diaphragm 13 against the larynx, and also prevents the transmitter from tilting. The instrument is held against the throat by straps passing round the neck and attached to loops secured to the sides of the instrument. The receiver is enclosed by a ring 3 and cap 7 which are situated on the opposite side of the base-plate 5. Tubes 12 connect ear-pieces to a chamber formed in the cap 7 and communicating with the receiver diaphragm 11. Fig. 3 shows the transmitter applied to a hand set. The shield 34 is of circular shape and is screwed on to the case 33, serving also to hold the diaphragm 29 in position. The receiver 25 may be adjustably pivoted to the stem of the hand set. The shield may comprise two or more projecting lateral arms of resilient material, provided, if desired, with pads at their free ends.
Patent GB-266784-A (GB)
Title: Improvements in toothed driving gear for domestic wringing and mangling machines
IPC: D06F45/18
Filed: 1925-11-06
Abstract: 266,784. Kirkpatrick, W. Nov. 6, 1925. Driving-gear for mangles and wringers.- Integral toothed wheels 8, 6, loose on an eccentric 7, the boss 7<a> of which is secured to the hand-wheel 12 loose on the roller shaft 3, gear respectively with a wheel 9 secured to the shaft and with a wheel 2 so formed as to surround the gearing and to be bolted to the machine framing A.
Patent GB-1315368-A (GB)
Title: Dense bodies of tungsten carbide
IPC: C22C29/08
Filed: 1970-06-09
Abstract: 1315368 Tungsten, carbide bodies E I DU PONT DE NEMOURS & CO 9 June 1970 [23 June 1969 (3) 27981/70 Headings C7A and C7D An alloy composition, suitable for metal cutting tool edges, with a density of over 98% theoretical, consists of tungsten carbide bound with 3-25% of an alloy consisting, apart from incidental impurities, of Co containing 5-25% W, wherein there are regions containing less than 8% W interspersed with regions containing more than 8% W. The preferred average grain diameter of the WC is less than 2 Á. The heterogeneity in the alloy may be caused by 1) using a mixture of WC powders one of which has too much C stoichiometrically and the other too little, 2) including C or W powder in the powder metallurgical mixture, or 3) slightly oxidizing the initial powder mixture. The powder mixture may be sintered and then hot pressed.
Patent GB-675477-A (GB)
Title: Improvements in or relating to the production of aqueous dispersions of cationic particles of urea-formaldehyde resins
Inventor: BERRY WILLIAM
IPC: C08G12/12
Filed: 1948-10-28
Abstract: Aqueous dispersions of partially condensed urea-formaldehyde resins, the colloidal particles of which carry a positive charge, are made by condensing urea or thiourea with formaldehyde in aqueous acid media by heat and adding to the aqueous media before, during or after the condensation a water soluble cation-active compound which comprises a quaternary ammonium or phosphonium group or a ternary sulphonium group having attached directly to the nitrogen, phosphorus or sulphur atom an alkyl group comprising a straight chain of at least 8 carbon atoms or a branched chain of at least 12 carbon atoms.  Specified compounds are cetyl trimethyl ammonium bromide, octadecyl trimethyl ammonium sulphate, tetradecyl pyridinium bromide, cetyl triethyl phosphonium bromide and cetyl ethyl methyl sulphonium bromide.  The aqueous dispersions of the resins may be prepared by refluxing 1 mol. of urea or thiourea with 2.0-3.0 mols. of formaldehyde for 1 hour at 98 DEG  C. in an aqueous solution adjusted to pH 5.0 by acetic acid and with sodium acetate as buffer, adding the cation active compound in solid form or aqueous solution before, during or after the condensation and then neutralizing to pH 7 with caustic soda solution.  The Specification contains IX examples of resins prepared as described above.  The dispersions may be used to produce moistureproof films as described in Specification 675,475. Specifications 517,011 and 576,666 also are referred to.
Patent GB-1038158-A (GB)
Title: Method of and apparatus for producing reinforced plastic compound tubular material
IPC: F16L9/12
Filed: 1963-07-16
Abstract: 1,038,158. Pipe making apparatus; reinforced plastic tubes. E. DACCO. July 16, 1963 [July 18, 1962], No. 28075/63. Headings F2G and F2P. [Also in Division B5] A method of producing stress-resisting tubular material from resinous matter consists in providing a homogeneous resinous core 10, applying on its outer surface evenly spaced longitudinal threads, winding helically over the first threads a plurality of second threads and embedding both layers of threads in a layer of cured resinous matter. Further layers of helically wound and/or longitudinal threads may be applied. The core tube 10 is of polyvinyl chloride, extruded at 30 (Fig. 4) and gauged and cooled at 31. The longitudinal threads are rovings of glass fibre 13 from spools at 34 and are wetted at 33 with a curable liquid polyester before being drawn through holes (Fig. 1, not shown) spaced circumferentially around a disc 32 on to the core tube at 10<SP>1</SP>. More liquid polyester is added from a hopper 35 before a rotating annulus 17 winds glass fibre rovings from bobbins 18 helically over the longitudinal threads at 10<SP>11</SP>. Further liquid polyester may then be sprayed on to the assembled article before it is passed on rollers 38 through a polymerizing oven 39 and a cooling chamber 40. The tube is drawn through all the aforementioned apparatus by a motor-driven driving frame 41 after which a rotary cutter 43 divides it into lengths. By regulating the speed of a motor 37 driving the annulus 17 relative to the rate of draw it is possible to control the pitch and thickness of the helical winding. For coupling lengths of the pipe together by a sleeve or other known method the core at the ends of each length of tube may be left uncovered as in Fig. 3. This can be effected by placing sleeves over the core extending over the points where it is to be cut, winding the rovings over the sleeves, severing the pipe lengths at the middle of the said sleeves and cutting the remaining half-sleeves off the core (Fig. 2).
Patent GB-709714-A (GB)
Title: Improvements relating to hypodermic needles
IPC: A61M5/32
Filed: 1950-11-17
Abstract: 709,714. Hypodermic needles. LONGLEY, E. O. Aug. 13, 1951 [Nov. 17, 1950; Dec. 15, 1950], Nos. 28170/50 and 30708/50. Class 81(2) The point of a hypodermic needle 1 is formed by a bevel 5 convex throughout its length which preferably runs tangentially into the side of the shaft opposite the point. It is preferred that the shaft of the needle should be formed with two intersecting longitudinal flat surfaces 3, 4, set at an angle of approximately 120 degrees to each other, the bevel commencing at the point of intersection of these faces.
Patent GB-1032580-A (GB)
Title: Single lever faucet and valving assembly therefor
Inventor: STAAT ROBERT AARON
IPC: A61L2/20
Filed: 1964-07-08
Abstract: 1,032,580. Valves. BAL-CAM Inc. July 8, 1964, No. 28193/64. Heading F2V. In a mixing faucet having hot and cold water inlets 44, 46 and outlets 20, X, the mixing chamber Z is separated from the inlet chambers P, Q by a valve unit comprising plate 60 (Fig. 3, not shown) having ports 70, 72 controlled by a pair of tilting-disc closure members 90, each having a spindle 91 or 93 extending through its respective port to carry a cam follower 80 or 82. On moving the handle 30 (Fig. 4, not shown) upwardly in a vertical plane about its pivot 250 the spindle 100 is depressed and an eccentric frusto-conical cam 110 engages the cam followers (Fig. 8, not shown) thereby causing the discs to tilt. On rotating the handle a par-axial face on the cam allows one of the discs to close. A sealing ring 64 is provided, the holes in which are smaller than the cam followers, and notches J may be provided in the closure discs to increase the flow area in the open position. A pin 140 may be provided upstanding from the plate to guide the cam and allow easy removal of the valve unit, which removal is achieved by releasing the escutcheon ring 400 and separating parts A and B. The end 249 of the handle 30 is received in a slot in the cap 200, and may be provided with bearing members 300 urged by spring 304 into frictional contact with the cap to maintain the lever in the adjusted position. Sealing ring 64 may be omitted if a seal ring is provided on each closure disc.
Patent GB-1224676-A (GB)
Title: Novel benzylthioethylamines, processes for their preparation, and compositions incorporating them
IPC: A01N33/08
Filed: 1969-06-05
Abstract: 1,224,676. Dichlorobenzylthioethylamines. ROUSSEL-UCLAF. 5 June, 1969 [7 June, 1968], No. 28388/69. Heading C2C. [Also in Division A5] Novel, biocidally active compounds I (including salts thereof) are obtained by interaction of the appropriate benzyl thiol (prepared by condensing a corresponding dichlorobenzyl chloride with sodium N,N - dimethyl - dithiocarbamate and subsequently hydrolysing the resultant dichlorobenzyl N,N-dimethyldithiocarbamate) and ethylene-imine.
Patent GB-924935-A (GB)
Title: Improvements in or relating to safety devices for spraying-reheating apparatus for preparing the atmosphere in metal heat treatment processes
IPC: C21D1/76
Filed: 1960-08-16
Abstract: 924,935. Safety devices for heaters supplying protective atmospheres for furnaces. REGIE NATIONALE DES USINES RENAULT. Aug. 16, 1960 [Aug. 26, 1959], No. 28426/60. Classes 51 (1) and 51 (2). A safety device for an electrically-heated apparatus for producing a protective furnace atmospheric from a carrier gas and a liquid having an alcohol, ketone or aldehyde radical comprises a electromagnetic valve in the liquid supply line, a thermal switch heated by parallel resistors connected in series with the main heater resistance, and a pressure-responsive switch in the gas supply line so that the electromagnetic valve is opened when the pressure in the gas line and the temperature of the thermal switch exceed predetermined values. A switch M, closed when the pressure in the gas supply line is sufficient for the operation of the atmosphere reheater and circulation, is arranged in series with a thermal switch T and the winding of a relay b, which has a contact in the circuit of the normally closed electromagnetic liquid supply valve V. A switch D, closed when the flow of liquid in the supply line is sufficient, is in series with a second relay a. The thermal switch T is heated by a resistor R6 in series with the atmosphere heating resistor R1 and has such a lag that it closes when the atmosphere heater is at a suitable operating temperature. During normal operation, switches T and M are closed, relay b energized, so that the electromagnetic valve V in the liquid supply line is open, switch D closed and relay a energized. Resistors R2, R8 in series with the heater resistor R1 are then bridged, and resistors R4, R5 connected in parallel with switch-heater resistor R6 to prevent the switch overheating. If the liquid flow fails, switch D opens to deenergize relay a, and connect a resistor R2 in series with heater R1 to limit the current flow to a value at which damage to the heater is avoided. The resistor R 4  is disconnected so that the switch heater R6 can still keep thermal switch T closed. If the gas supply pressure falls, switch M opens, de-energizing relay b, and closing electromagnetic valve V to cut-off the liquid flow, so that switch D also opens. Resistors R2, R3 are then in series with heater resistor R1, so that overheating is avoided, and shunt resistors R4, R5 are disconnected so that switch heater R6 maintains switch T closed. In the event of failure of the heater resistor R1 or the electricity supply, switch heater R6 cools and switch T opens, de-energizing relay b and thus cutting-off the liquid flow. Lamps L, S light when power is applied to the safety circuit and when relay b is closed respectively. Specification 889,209 is referred to.
Patent GB-1522426-A (GB)
Title: Paper sheets processing apparatus
IPC: B65H29/62
Filed: 1976-07-08
Abstract: 1522426 Sorting sheets; wrapping sheets TOKYO SHIBAURA ELECTRIC CO Ltd 8 July 1976 [8 July 1975] 28427/76 Headings B8R and B8C Paper sheets a are separated into normallypresented acceptable sheets which are passed to receiver 51, reversely presented acceptable sheets which are passed to receiver 52 and sheets which cannot be positively identified as either of these and are accumulated in receiver 53. The normally-presented sheets from receiver 51 are fastened into bundles by rollers 101a to 101d and application of tape 82, and are discharged to basket 501, if need be by way of printing unit 500. Reversely-presented sheets may be removed from the receiver 52 in counted batches.
Patent GB-535858-A (GB)
Title: Improvements in or relating to the attachment of tips to heels
IPC: A43D79/00
Filed: 1939-10-23
Abstract: 535,858. Nailing. BRITISH UNITED SHOE MACHINERY CO., Ltd., CARR, J. W., and MANSHIP, W. Oct. 23, 1939, No. 28452. [Class 89 (iii)] A metal tip 54 is attached to the tread face of a heel by non- circular nails driven by a gang of drivers 30 guided to move along mutually non - parallel paths. The drivers are arranged for pivotal movement relatively to their actuator, the heads 32 of the drivers being semi-circular and engaging corresponding recesses. An abutment 46 engages the attaching face of the heel, and has a surface arranged to turn inwardly of the heel the points of driven nails that contact with it. The drivers are retained by a plate 36 and are driven by a power-actuated plunger 24 engaging the shank 18 of the driver-carrier. The paths of the drivers are inclined inwardly of the heel at about two degrees to the vertical. Specifications 22839/02, 24545/06, [both in Class 17], 25821/09, [Class 17 (i)], and 420,293 are referred to.