baber/WOPTO huggingface dataset:
Patent GB-601391-A (GB)
Title: Improvements in or relating to signalling ultra-short waves
IPC: H04B1/50
Filed: 1945-06-22
Abstract: 601,391. Automatic frequency control systems. SOC. FRANCAISE RADIO-ELECTRIQUE. June 22, 1945, Nos. 16029 and 16030. Convention dates, April 6, 1943, and June 18, 1943. [Class 38 (iv)] [Also in Group XL (c)] The frequency of an ultra-short wave generator is stabilized by combining an unstabilized decimetric frequency with a metric frequency, the variations in which compensate for the variations in the decimetric frequency. In one embodiment, Fig. 1, the output fv from an auto-generator klystron 1 is combined with a lower frequency produced by oscillator 8 in a klystron 2, operating as a frequency changeramplifier in a manner similar to that described in Specification 601,442, [Group XL (c)], as open to inspection under Sect. 91. The output cavity of klystron. 2 is tuned to the sum or difference frequency, and part of the output is fed through a resonant cavity 5, to a detector 6 and reactance valve 7, which causes the frequency of oscillator 8 to vary in such a manner as to cancel the variations in fv. The output of klystron 2 is fed to two klystrons 3, 4 to provide energy for transmission and demodulation of a received wave respectively. The input to frequency-changer klystron 4 is combined with a lower frequency from generator 9, which may be crystal controlled, to provide local oscillations for demodulator 10, which feeds receiver 12. The input to klystron 3 is combined with a lower frequency-modulated wave for transmission, which may be the output of demodulator 10, amplified at 12. In another embodiment, Fig. 2 (not shown), the output fv from an autogenerator klystron is mixed with the output fq of a crystal oscillator, and the beat frequency obtained is combined with the frequency fv to give the stable frequency fq. The beat frequency fv-fq may be combined with a modulated frequency f1, which may be supplied by a unit piloted by the crystal of the stable oscillator, or may be an I.F. supplied from a receiver which receives local oscillations fq from the crystal oscillator.
Patent GB-930934-A (GB)
Title: Improvements in toggle fasteners and articles incorporating such fasteners
Inventor: HUBBOLD SYDNEY
IPC: F21V17/20
Filed: 1961-05-03
Abstract: 930,934. Clamps. GENERAL ELECTRIC CO. Ltd. May 3, 1962 [May 3, 1961], No. 16037/61. Class 44. A toggle fastener comprises a clasp lever 1, a swing lever 2 and an attachment piece 3 provided by a unitary moulding of a plastics material, e.g. polypropylene, with thinned sections 4 and 5 between those parts which provide pivots at each end of the swing lever 2. In the arrangement according to Fig. 2, as applied to the fastening together of parts of a light fitting, the attachment piece 3 seats on a flange 6 of one part, or is attached thereto and is formed to provide a stop for the lever 2 in the operative position shown in full lines. As applied to the fastening together of the two parts 10 and 11 of a case, Fig. 3, the clasp lever 12 is apertured to engage a hook 13 secured to the part 11 and the attachment piece which is L-shaped is attached to the part 10.
Patent GB-676749-A (GB)
Title: Improvements relating to the microscopic examination by interferometry of transparent objects
Inventor: DYSON JAMES
IPC: G02B21/14
Filed: 1949-06-16
Abstract: 676,749. Optical apparatus. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd. May 8, 1950 [June 16, 1949], No. 16118/49. Class 97 (i). In or for use in the microscopic examination by interferometry of substantially transparent objects, an optical system, included or adapted to be included between a microscope objective and a source of light, comprises four surfaces arranged in spaced substantially parallel planes, of which the three remote from the light source when in use are formed to produce partial reflection and the surface nearest the light source is formed with a small spot which is totally reflecting in the direction of the objective and is arranged on the optical axis of the microscope, the arrangement being such that with an object centred on the optical axis of the microscope and positioned between the second and third surfaces and illuminated by a light beam converging on the object from the source, a virtual image of the source is formed by light which passes through the object and another coincident virtual image of the source is formed by light which does not pass through the object. As shown, the system comprises a pair of substantially plane parallel glass plates 2, 7 of which the surfaces 3, 9 and 8 are halfsilvered and the surface 5 has a central spot 4 which is completely silvered. Between the plates is the transparent object 6, the spaces between the object and the plates being filled up with immersion oil 10. Cemented to the surface 8 of plate 7 is a glass block 12, the upper surface of which is spherically concave with its centre of curvature at 4 and is completely reflecting except at 14 on the axis of the microscope objective 15. Converging light 1 from a condenser (not shown) enters plate 2 and part thereof is reflected at surface 3 and totally reflected at 4 so that a percentage of the light passes through plate 7 without passing through object 6. The other part of the light is transmitted by surface 3 and the object 6 and a percentage thereof is reflected by surfaces 8 and 9 of plate 7 to combine with the firstmentioned part and thus produce interference effects. The combined light rays are then partly transmitted by the surface 8 and are incident normally on surface 13 whereby they are reflected again on surface 8 which directs the light through the transparent area 14 into the objective 15. The plates 2, 7 may be wedges of small angle, the wedge edges being parallel and a screw 11 is provided for moving wedge 2 so as to vary the phase difference between the light rays which combine at surface 9. Specification 651,035 is referred to.
Patent GB-938822-A (GB)
Title: Improved hydrocarbon separation process
IPC: C10G25/03
Filed: 1961-05-04
Abstract: <PICT:0938822/III/1> Straight claim hydrocarbons having more than 10 carbon atoms are separated from branched chain and/or cyclic hydrocarbons in the gas phase by mixing with an adsorbable displacing medium having molecules smaller than those of the straight chain hydrocarbons and at least one polar bond, passing into a molecular sieve adsorbent to adsorb the straight chain hydrocarbons and desorbing the latter by introducing said displacing medium. Preferably the adsorbent is preloaded with the displacing medium. Specified displacing gases are ammonia, methylamine, methyl chloride and fluoride, nitromethane, ethyl chloride, carbon dioxide and sulphur dioxide.  The displacing gas preferably comprises from 0,5-70% of the feed by weight.  Fig. 1 illustrates a preferred process in which the hydrocarbon mixture is passed first into a "trimmer bed" 3 containing a 3,6-4,6  molecular sieve (which does not adsorb the hydrocarbon) saturated with ammonia gas, whereby the hydrocarbon mixture picks up ammonia before passage into the adsorption zone 1 packed with a 5  molecular sieve also initially saturated with ammonia.  The n-hydrocarbons are adsorbed and the remaining mixture is passed to distillation zone 7 where the ammonia is removed overhead leaving the unadsorbed hydrocarbons. The ammonia is passed to an adsorption zone 2 saturated with normal hydrocarbons in a previous adsorption step, and there desorbs said hydrocarbons and at the same time saturates the adsorption zone 2 and a trimmer bed 4.  The process can then be repeated in reverse, the trimmer beds serving to eliminate the need to distil the desorbed n-hydrocarbons and the necessity to introduce ammonia from an external source.  The adsorption and desorption may be conducted at 500 DEG -800 DEG F. and 0-100at.  An example and experiments some of which are comparative only, refer to the use as the displacing gas, of ammonia, to separate n-hydrocarbons from a 320 DEG -750 DEG F. gas oil and wax (n-C14-C25 paraffins) from a 400 DEG -700 DEG F. middle distillate.
Patent GB-476636-A (GB)
Title: Improvements in or relating to light and heat radiating apparatus
IPC: F24C7/08
Filed: 1936-06-10
Abstract: 476,636. Variable resistances. BERRY, A. F. June 10, 1936, No. 16221. Drawings to Specification. [Class 37] [Also in Group XI] A variable resistance for an electric radiator comprises a glass container similar to an hour glass and half filled with mercury. A resistance coil is arranged coaxially in one half of the container. When the resistance containing half is lowest the resistance is immersed in mercury and short circuited. When the apparatus is turned over the coil is gradually uncovered as the mercury drains into the other half and the resistance gradually increases to its maximum.
Patent GB-529851-A (GB)
Title: Improvements in and relating to mechanically operated moulding presses
IPC: B30B1/18
Filed: 1939-06-02
Abstract: 529,851. Moulding presses. HALL, L. June 2, 1939, No. 16288. [Class 87 (ii)] In presses in which a lower counterweighted platen is moved in relation to a fixed upper platen by worm gearing, positive movement is imparted to the lower platen through twin worm wheels rotating in opposite directions. As shown, the lower platen 14 is driven by a pair of eccentrics coaxial with worm wheels mounted upon fixed spindles in a housing 2 and is connected by links 31, levers 28 and chains 29 to counterweights 30. The mould, adapted to form domestic fire-backs, comprises a saddle 23 and sides 22 and is furnished with rollers running on a piston 21b of a side extension 21, the platen 14 being adapted to embrace the mould. In use, the mould is charged with a clay blank and run into the press and the end closed by a door 24, after which the press is operated. On the upward movement of the platen the door 24 is retained by a catch 26 and upon its descent, the mould is supported upon fixed stools 32. As the mould is withdrawn excess material is removed by cutters 33.
Patent GB-228439-A (GB)
Title: Improvements in and relating to force feed oil cans
IPC: F16N3/08
Filed: 1924-07-08
Abstract: 228,439. Kaye, W. R. July 8, 1924. Single-acting piston pumps; pipes.-The pump cylinder A, the suction chamber A<2> and the discharge chamber A' of a force-feed oil can are combined in a Y-shaped fitting as shown. The piston P<5> is carried on a rod P<2> extending through a gland P<1> and provided with a press-button P. The piston is retracted by a spring P<3> bearing against a washer P<4> on the end of the cylinder A. An inlet valve B is mounted in the member A<2>. The spout S is provided with a restricted nozzle N.
Patent GB-543079-A (GB)
Title: Improvements in machines for use in the production of electric lamps and similar devices
IPC: H01J9/38
Filed: 1940-11-11
Abstract: 543,079. Exhausting and filling electric lamps and discharge devices. BRITISH THOMSONHOUSTON CO., Ltd. Nov. 11, 1940, No. 16350. Convention date, Nov. 9, 1939. [Class 8 (i)] [Also in Group XL] An electric discharge lamp 17 is inserted between spring grips, and its exhaust tube is pushed into an exhaust port 23, with a gas-tight fit; the exhaust port is mounted on a bracket 33 extending from a rotary turret and carrying a mercury dispenser 92 such as described in Specification 531,811, [Group XVIII], which dispenser delivers a measured drop of mercury to the device at requisite times. The bracket and device are carried by the rotation through a series of stations in which successively, after the insertion of the lamp (1) an upper valve section 40 connected to the turret aligns a passage 47 in this section with an exhaust passage 46 in the stationary lower section : (2) the lamp still under suction is carried through an arcuate oven, and if desired a leak detector comes into action and may close a pinch clamp, flattening a rubber connection 52 in the bracket, or may give an alarm, or close the connection between the exhaust port 23 and its exhaust where this serves a number of lamps; (3) the lamp leads make electrical connection, to heat and decompose barium carbonate in the lamp, rendering it emissive ; (4) the current is broken and the dispenser caused to discharge a drop of mercury, under the action of the cam controlling the pinch clamp ; (5) the cathodes are heated to full operating temperature, and, later,'full potential is applied to them ; (6) the upper end of the lamp is carried into an oven and pre-heated, after breaking the current ; (7) the exhaust is increased and then cut off, a second drop of mercury added, and a dose of gas supplied ; (8) the exhaust tube is sealed by a gas jet; and (9) finally the lamp and exhaust tube stub are removed.
Patent GB-1139093-A (GB)
Title: Improvements in thread brakes
IPC: D03D47/00
Filed: 1966-04-14
Abstract: 1,139,093. Thread brakes. MACHINEFABRIEK L. TE STRAKE, N.V. 14 April, 1966 [15 April, 1965], No. 16356/66. Headings D1D and D1E. If a thread 2 tends to stick to a clamping member 1a or 1b when the members are moved apart to release the thread, a fixed abutment 3a, within which the clamping member retracts, disengages the thread from the member. The tubular outer parts 3a may be the movable clamping members and the inner parts 1a, 1b may be the fixed abutments. In another form, only one clamping member 1a is operated and the fixed abutment consists of a rod passing diametrically through a groove in the end face of the clamping member; in this embodiment, the lower clamping member is spring loaded upwardly against a stop.
Patent GB-1524508-A (GB)
Title: Terminal blocks
IPC: H01H1/36
Filed: 1977-04-20
Abstract: 1524508 Mechanical switches C A WEIDMULLER KG 20 April 1977 [27 Oct 1976] 16369/77 Heading H1N [Also in Division H2] A terminal block comprises a body 10 of insulating material having first and second terminals 12 therein, and means 16 for selectively interconnecting and disconnecting the terminals 12, comprising a pivotable lever 7 and a one piece spring 1 secured thereto, the lever 7 pivoting from the position shown to a position where it is within a recess 15 in which position the terminals 12 are interconnected. The spring 1 consists of sheet metal divided by slits 2 in to tongues 3, 3a, 3b, adjacent tongues 3, 3a and 3, 3b being folded together to form respective contact pairs for resiliently gripping respective contact blades 14 of the terminals 12.
Patent GB-457741-A (GB)
Title: Improvements in and relating to plugs for fixing screws, bolts, studs and similar attaching means in wads, floors and the like
IPC: F16B13/06
Filed: 1936-06-11
Abstract: 457,741. Wall plugs. BIERMANS, W. J., BIERMANS, A. A. P., and BIERMANS, A. P. D., (trading as BIERMANS & ZOON, W.),. 24, Eindstraat, Breda, Holland. June 11, 1936, No. 16382. Convention date, June 11, 1935. [Class 89 (i)] A plug for fixing screw - threaded attaching means such as screws, bolts, studs, and the like, in walls, floors, and the like, of the type comprising a tube 1 made of lead or similar ductile material such as an alloy of lead, has a nut 2 fixed to one end of the tube 1, the surface of contact between the nut 2 and tube 1 being perpendicular, or substantially so, to the axis of the tube 1. The nut 2 is formed with hooks 3 which are embedded in the material of the tube 1 during the casting of the latter on the nut 2. The plug is inserted in a preformed hole 4 and an article 9 secured by a bolt 5 the inner end of which screws into the nut 2 whereby the tube 1 is compressed both axially and radially. A washer 11 is interposed between the body 9 and the head 10 of the bolt 5. A washer 6 is provided having teeth 7 which are pressed into the wall and teeth 8 which penetrate the tube 1, rotation of the plug being thus prevented. Alternatively the washer 6 may be omitted, and projections provided on the periphery of the tube 1 for preventing rotation of the plug in the hole.
Patent GB-561588-A (GB)
Title: Improvements in loose leaf filing devices
IPC: B42F13/02
Filed: 1942-11-20
Abstract: 561,588. Loose-leaf binders. FEDERN, H. R. Nov. 20, 1942, No. 16413. [Class 146 (i)] In a loose-leaf binder having filing posts or members a, b, which are flexible or at least one of which has a flexible end, so that they can be joined by pin-and-socket or like means, the loop so formed is engaged over one or more of a series of hooks 17 to take up the slack and effect the binding of the papers.' The hooks are carried by a bar 14, which is mounted on the base of the binder and may also carry flexible members c, d, which can be joined to the ends of the filing-members a, b, so as to form transfer arches. The bar 14 is preferably carried by sliding or extensible arms 15.
Patent GB-1467772-A (GB)
Title: Thermally developable light-sensitive material
IPC: G03C1/725
Filed: 1975-04-21
Abstract: 1467772 Thermally developable lightsensitive material FUJI PHOTO FILM CO Ltd 21 April 1975 [22 April 1974] 16447/75 Heading G2C Thermally developable light-sensitive material, producing a positive coloured image, comprises in one or more layers a diazonium salt and a metal #-dilxetonate chelate. There may be 30-300 parts of chelate per 100 parts of diazonium salts and 100-5,000 parts of binder per 100 parts of diazonium salt. The layer(s) may be 0À5-500 microns thick in the presence of binder and 0À1-5 microns thick in the absence of binder. A composition may be applied to a support in a polar solvent. Heat development may be at 50-200‹C for 3 sec-3 min. The material may be of vesicular or printing plate type. The metal of the chelate may be Mo, Ti, Sn, Cr, Zr, Al, W, U or Pd. The dilxetone may be acetylacetone, 1, 1-trifluoropentane-2, 4-dione, 1, 1, 1, 5, 5, 5-hexafluoropentane-2, 4-dione, benzoylacetone, dibenzoyl methane, or 2-puroyltrifluoroacetone. Examples of diazonium chlorides, chelates, binders, solvents and supports are given.
Patent GB-1126008-A (GB)
Title: Control circuits
IPC: G05D23/30
Filed: 1966-04-14
Abstract: 1,126,008. Automatic temperature control systems. FENWAL Inc. April 14, 1966 [April 14, 1965; April 11, 1966], No. 16477/66. Heading G3R. [Also in Division H2] A bridge circuit including a thermistor TR applies a half wave gating voltage to a thyristor SCS, supplied with asymmetric full wave rectified current from circuit 21, which energizes a relay 3a, 3b, 5 controlling the heating current to an element R1. With the bridge completely unbalanced a large half wave signal will be applied to the thyristor thus energizing the relay. The supply is designed to have a poor regulation signified by resistors R2, R3 in series with the transformer primary winding 7, hence the bridge output will drop. Self heating current will also flow in the thermistor TR. Once per cycle the relay coil current is interrupted, which is bridged by a free wheeling diode D5, part of the voltage across which is added to the bridge output through a potentiometer P2. As the environment of temperature approaches the set temperature, the self heating current of TR causes the bridge to balance at a slightly lower temperature, producing anticipation. When the contacts 3a, 3b open the voltage rise across the primary winding 7 causes the bridge to increase its output hence reducing the temperature differential. The asymmetric supply is provided by a prephase rectifier D3, D4 having a capacitor C3 across one diode.
Patent GB-439058-A (GB)
Title: Improvements in method of treating a graphite body
IPC: H01J19/30
Filed: 1934-06-02
Abstract: A graphite body, e.g. an electrode of an electric discharge device, is heated in an oxidizing atmosphere to a glowing temperature until all non-graphitized carbonaceous materials such as hydrocarbons, are removed.  Lamp black or amorphous carbon may be mixed with a suitable binder and graphitized by means of the Acheson process.  The graphite may then be pressed to the desired shape and heated in air to 1200 DEG  C. by means of induced high-frequency currents, or by the passage of an electric current therethrough, or by the use of an electric resistance or gas-fired muffle furnace.  The body is surrounded by a blue glow during the treatment, and emits incandescent particles when all non-graphitized material is removed.
Patent GB-1268826-A (GB)
Title: Refractory materials
Inventor: CEVALES GIACOMO
IPC: C04B35/484
Filed: 1969-03-28
Abstract: 1,268,826. Fused cast refractories. MONTECATINI EDISON S.p.A. 28 March 1969 [29 March, 1968], No. 16509/69. Heading C1J. A refractory material having the composition by weight expressed as oxides, of 60-73À2% Al 2 O 3 , 16-22% SiO 2 , 10-20% ZrO 2 , and 0À8 to 1À3% Na 2 O and containing the phases corundum 35-49 wt. per cent, mullite 30-44%, baddeleyite 10-20% and vitreous phase 11- 14% is made by melting bauxite, siliceous sand, zirconium sand and sodium carbonate in an electric furnace.
Patent GB-1060978-A (GB)
Title: Means for killing flies,gadflies,wasps and the like
IPC: A01M1/20
Filed: 1964-04-22
Abstract: 1,060,978. Killing insects. O. H. KLARRE. April 22, 1964, No. 16634/64. Heading AIM. Means for killing flies, gadflies, wasps &c. is formed with a recess (12) containing a substance attractive to the flies &c. and to which a poison has been added, the recess being covered by a preferably removable grid (13) the openings (14) of which are of a size to permit entry of the insects. The device may have the shape and colours of a fungus or be decorated with insects or flowers. A cloth or pad impregnated with a mixture of a poison and attracting medium may be located within the device.
Patent GB-1327299-A (GB)
Title: Preparation of mononitro derivatives of benzoic acid and mono-and dichlorobenzoic acid
IPC: C07C205/58
Filed: 1971-05-24
Abstract: 1327299 Preparation of mononitro derivatives of benzoic acid and mono- and dichlorobenzoic acids GAF CORP 24 May 1971 [28 May 1970] 16696/71 Heading C2C The invention comprises a process for the preparation of mononitro derivatives of (C 1-4 ) alkyl esters of benzoic or mono- or di-halobenzoic acid which comprises contacting a (C 1-4 ) alkyl ester of a benzoic acid selected from benzoic acid, monohalobenzoic acid and dihalobenzoic acid with a mixed nitric acid and sulphuric acid nitrating agent so that the alkyl ester of the benzoic acid is nuclearly mononitrated and isolating the resultant mononitro ester. The most preferable nitrating agent consists of 20-23% HNO 3 , 23-26% SO3 and the remainder H 2 SO 4 .
Patent GB-729534-A (GB)
Title: Method and apparatus for manufacturing mineral wool
IPC: C03B37/05
Filed: 1953-06-17
Abstract: 729,534. Mineral wool. STILLITE PRODUCTS, Ltd. June 17, 1953 [June 25, 1952], No. 16789/53. Class 56. In making mineral wool fibres molten slag is dropped on to the surface of a spinning rotor 41 from which a multiplicity of fine streams are projected tangentially and these are attenuated into fibres by being intercepted by a highvelocity annular blast emerging from a substantially continuous annular slot 40 in a casing 45 surrounding the rotor. The rotor is cooled by liquid circulating through pipes 25, 29. The slot 49 is discontinued for a short length at 50 to permit the falling molten slag to drop on to the rotor and apertures 51 are provided adjacent the portion 50 to prevent the projected streams from the rotor from interfering with the falling material.