baber/WOPTO huggingface dataset:
Patent GB-1489630-A (GB)
Title: Keyswitch state detectors
IPC: G06F3/02
Filed: 1974-11-12
Abstract: 1489630 Measuring capacitance TELETYPE CORP 12 Nov 1974 [29 Nov 1973] 48985/74 Heading G1U A capacitance value is monitored by comparison with a reference by determining the time the reference capacitor takes to charge to a specified voltage from a voltage source via a known resistor and sampling the voltage on the unknown capacitance after it has been charged from the source via the resistor for that time. A number of capacitive keyswitches 8-I to 8-N each have two values of capacitance the higher corresponding to an open key. On commands from a counter 36, multiplexer 10 sequentially connects the reference capacitor 14 and the keyswitches 8-I .... 8-N to a voltage source via resistor 16. OR-gate 46 detects when the reference 14 is selected and inhibits gate 52 while enabling gate 48. When the capacitor 14 charges to the threshold of amplifier 28, this switches to a high state and gate 50 reads an interval counter output 34 into a register 18. During subsequent selection intervals, comparator 20 produces an enabling pulse each time counter 32 reaches the count stored in register 18. If the selected keyswitch is depressed the capacitor charges more quickly than the reference and thus the amplifier 28 output is already 'high', producing a pulse F which passes to a demulti-plexer 22 which identifies the depressed key to an encoder 21. If the key is not actuated, the amplifier 28 output is still low and no pulse from gate 52 is produced.
Patent GB-1148929-A (GB)
Title: Liquid metal vaporizer
IPC: F03H1/00
Filed: 1966-11-03
Abstract: 1, 148, 929. Jet propulsion plant; vapour generators; syringes. GENERAL ELECTRIC CO. Nov. 3, 1966 [March 8, 1966 (2)], No.49397/66. Headings F1J, F1Q and F1R. In a device for the propulstion of space vehicles or other purposes, liquid metal 24, such as mercury or an alkali metal, is vaporized and passed through a capillary aperture 16 as a jet. The liquid metal is contained within a stainless steel cylinder 10 lined with a glass tube 22 and a ceramic insulating plug 18 having an aperture 20 forming a metering chamber. The metal is pressurized by an inert gas supplied through a pipe 36 to above a piston 26, the pressure of approximately 1 atmosphere being insufficient to force the metal in the liquid state through the capillary aperture 16 in stainless steel end plate 14. The piston 26 may be omitted and the surface of the metal open to atmospheric pressure. When a thrust pulse is required, rectifier 42 is triggered to cause capacitor 40 to discharge and set up a potential across the metal 24, thus vaporizing the metal in chamber 20 and causing it to discharge through aperture 16 as a jet into an evacuated chamber 44. In a modification, Fig. 2 (not shown), the liquid metal is contained within a cylindrical chamber (13) bored in a ceramic (aluminium oxide) block (15) surrounded by a copper cylinder (10). Small tubes (17) extend from the chamber (13) to a ring shaped chamber (48) defined between a ceramic ring (43) and a disc (45) at the face of the block. The metal in chamber (48) is vaporized by induction when energy from a current pulse source (29) is supplied to a coil (25) mounted in a ring shaped channel (23) in the block face adjacent the chamber (48).
Patent GB-1217227-A (GB)
Title: Improvements relating to photographic film assemblies
IPC: G03D15/00
Filed: 1968-10-18
Abstract: 1,217,227. Photographic film assemblies. INTERNATIONAL POLAROID CORP. Oct.18, 1968 [Oct.19, 1967], No.49493/68. Heading G2A. A photographic film assembly which is to be moved between confining members 14, 18 Fig.7a, has first and second sheets 30, 36 of sheet material which include areas to be registered with one -another, the sheets being coupled together and to a strip 42 ahead of the areas for advancing them in superposition between the confining members, wherein one of the strips has a section 44 comprised of a plurality of transverse corrugations to increase the flexibility of the section and to allow the removal of any slack existing in that strip between the areas and the point at which the strips are attached to one another. One of the strips contains a succession of photo-sensitive areas 32, Fig.2, which are brought into superposition with a succession of image receiving areas 38 on the other strip, each of the image receiving areas having an associated rupturable container 40 carrying a processing agent. Each strip issues from a roll 26, 28 which are located at opposite ends of a portion (12) Fig.1 (not shown) of a camera apparatus, the apparatus when assembled having the leader strip 42 located outside the apparatus which when operated pulls the assembly between a pair (22), (24) of pressure exerting rollers. To obtain initial registration between image areas 38 and receiving areas 32, image strip 36 has two elongated slots 52 and receiving strip 30 has two corresponding spacer elements 50 which are thicker than strip material 36. Upon operation of the assembly, the rollers are forced apart by a greater amount when the spacer elements 50 are drawn therebetween, thus permitting movement of strip 36 relative to strip 30 until the trailing edge of slots 52 are aligned with elements 50, after this both strips are drawn through the rollers together.
Patent GB-1021773-A (GB)
Title: Locked tufting stitch
IPC: D05C17/00
Filed: 1964-12-07
Abstract: 1,021,773. Sewing, pile fabrics. SINGER CO. Dec. 7,1964 [Dec. 9, 1963], No.49633/64. Headings D1G and D1K. A stitched seam comprises a single thread 30 formed into a succession of loops each of which projects through the workpiece from one side thereof, the loops being alternately tufting loops 33 and working loops 34, each tufting loop being passed through the succeeding locking loop to extend therebeyond to a distance substantially greater than the distance between said locking loop and the succeeding tufting loop, each locking loop being set into the workpiece while the tufting loop passed therethrough is maintained extended, and each tufting loop being free of concatenation with any succeeding tufting loop. As shown, each locking loop is twisted through half a turn. In a modification the locking loop is not twisted. The tufting loops may be either uncut or cut. Tufted fabric is produced by forming a plurality of parallel seams in a work piece.
Patent GB-1437712-A (GB)
Title: Trailers
IPC: B62D63/06
Filed: 1972-10-31
Abstract: 1437712 Trailers; spring suspensions P B TASKER 6 Nov 1973 [31 Oct 1972] 50069/72 Headings B7B and B7D In a trailer including a draw bar arrangement and a transverse bar 2 a pair of bearing brackets 23 are mounted underneath the transverse bar 2 and a torsion bar 24 carrying a stub axle 25 is journalled in each bracket with the inner end of the bars 24 connected by bolts to opposite ends of a leaf 26 of spring steel clamped to the bar 2. Each clamping plate 27 is adjustable along bar 2 so that the spring rate of leaf 26 may be varied. More than one transverse bar and draw bar may be provided and the draw bar may alternatively be in the form of an "A" frame. The draw bar 1 and transverse bar 2 are releasably connected and each formed from a channel section with inturned free edges to form a longitudinal slot 6a, 6b, 8a, 8b in which fittings such as a keel roller 15, a snubber 19, and hull supports 12, are introduced via the ends of the respective slot and moved to appropriate locations. The bars 1, 2 are constructed from channel sections arranged back to back and welded along their lengths. An elongate plate 2a may be bolted to channel section 7b of bar 2 for further rigidity. The fittings are secured by a bolt which passes through a hole in the fitting and engages a nut located in the respective slot.
Patent GB-1237951-A (GB)
IPC: C10M143/02
Filed: 1968-10-22
Abstract: 1,237,951. Hydrogenated polymerizate. ESSO RESEARCH & ENG. CO. 22 Oct., 1968 [25 Oct., 1967], No. 50138/68. Heading C3P. A synthetic insulating oil is prepared by hydrogenating the polymerizate boiling at above 450‹ C. at atmospheric pressure, said polymerizate being prepared by copolymerizing ethylene and propylene at -40‹ to 80‹ C. in the presence of a solution of an organo-metallic catalyst in a solvent, the ethylene and propylene being present in a molar ratio of 6/4 to 3/7, and the weight ratio of solvent to copolymer being 10/7 to 1/3. The copolymer is separated from the catalyst and solvent before the products boiling below 450‹ C. are removed by distillation. The catalyst comprises (1) a compound of a heavy metal of the B sub-group of Groups IV to VIII of the Mendeleev Periodic Table, and (2) one of the following (a) an organic compound of a Group 1 to IV metal (b) a metallic or organometallic hydride (c) a halogenated organometallic compound. An additive such as polyethylene, polybutene polyisobutene, wax, synthetic resin or colophony, may be incorporated in the polymerizate. In an example, ethylene and propylene are copolymerized in heptane in the presence of titanium tetrachloride and aluminium triethyl. The catalyst is destroyed with ethanol/water, the polymerizate filtered and fractionated by distillation. The fraction boiling above 450‹ C. was mixed with a small amount of polyethylene and hydrogenated over a nickel catalyst.
Patent GB-1450894-A (GB)
Title: Flame tubes
IPC: F23M5/02
Filed: 1972-11-01
Abstract: 1450894 Combustion chamber walls LUCAS INDUSTRIES Ltd 4 Dec 1973 [1 Nov 1972] 50268/72 Heading F4B [Also in Division F1] A flame tube includes a number of ceramic tiles 13 attached in rows by -tongues 17 in longitudinal grooves 19 in an outer casing wall 15. As shown the tube is annular, and includes further tiles 12 similarly attached to an inner wall 14. The tiles are axially clamped by a yoke 21 against fixed abutments 20, 22 with the frusto-conical surfaces of contact between the tiles and abutments lying on a frusto-conical sufface having a notional apex on the axis of the flame tube lying in the plane-including the surfaces of contact 'of the tiles with the yoke 21. Again, Fig. 3 (not shown,) the tongues (117), (116) are off-centre on the tiles, opposite edges of the tiles abutting the wall and an adjacent tile respectively. Also, Figs. 4-6 (not shown), the tiles have tongues (217, 216) at both edges engaging in grooves with the tongues of adjacent tiles.
Patent GB-995071-A (GB)
Title: Liquid filler apparatus
Inventor: EGLESTON HARRY B
IPC: G01F11/28
Filed: 1963-12-23
Abstract: 995,071. Delivering measured quantities of liquid; filling containers. EX-CELL-O CORPORATION. Dec. 23, 1963, No. 50622/63. Headings B8N and B8T. Apparatus for delivering measured quantities of liquid such as milk into a container 40 comprises a supply tank 22, an inlet 30 leading from the tank into a measuring chamber 28, piston means 32 for controlling the flow of liquid into the chamber and valve means 50 controlling the discharge of liquid from the chamber. The measuring chamber 28 is connected to the underside of the tank 22 which is carried by a rotatable housing 42 of a filling machine, the inlet 30 leading from the tank into a cylinder 34 communicating with the chamber. The valve means 50 comprises a closure member 51 pivoted on a sleeve 52 and cooperable with a tubular member 60 normally urged by a spring 59 into the closed position shown in Fig. 3. In operation, liquid is fed from the tank, via the inlet 30, into the cylinder 34 and thence into the measuring chamber 28 where it rises through a port 26, in a cap 26 to the level 21 in the tank. Upon movement of a lever 35 by means of a rotary cam member on the machine, a piston 32 closes off the inlet 30 and, at the same time, displaces some of the liquid in the chamber 28 back into the tank via the port 26. The degree of movement of the piston is controlled, in order to vary the amount of liquid dispensed, by means of a spring - loaded handle 74, 75 which, when lifted, can be rotated to reposition an eccentric shaft coupling the lever 35 to a second lever 37; the latter lever is connected via a shear pin 39, to a lever 46 moved by the rotary cam member. The measured quantity of liquid is dispensed from the chamber by means of the container 40 being raised by a cam-controlled platform 88, 89, 91, 92 so that the top of the container abuts a drip plate 61 secured to the tubular member 60 thereby opening the discharge valve 50; a removable stop plate 58 for the tubular member is provided in order that the degree of opening for the valve may be varied to suit liquids of different viscosities. The machine may be cleaned by filling the tank with a suitable liquid, the machine being operated in the normal way except that the valve 50 is opened by means of a lever 82 attached to the shaft 87 on which the container platform 88 is secured; the lever is normally rotated out of contact with the valve via a pin-and-slot device 94, 95.
Patent GB-1202748-A (GB)
Title: Improvements in or relating to an electrical system for preventing arcing in a high intensity glow discharge apparatus
IPC: H01J37/32
Filed: 1967-11-07
Abstract: 1,202,748. Protective arrangements. ELEKTROPHYSIKALISCHE - ANSALT BERNHARD BERGHAUS. 7 Nov., 1967 [8 Nov., 1966], No. 50682/67. Heading H2K. A system for preventing arcing in a highintensity glow discharge apparatus 2 having an electrode which is connected to a workpiece and a current source 1, comprises means 6 for producing a potential difference representative of the current flowing to the electrode, a circuit which is set to produce an output voltage indicative of a safe burning voltage, and means for interrupting the supply to the electrode when the potential difference exceeds the output voltage, i.e. when the current/voltage relationship of the discharge falls within an area determined by a curve of the safe operating characteristic of the apparatus. As shown, a transistor 3 has its emitter collector path connected in series with resistors 7, 8 and a bias source 11 across a resistance 6. The emitter-base path is connected in series with the resistor 8 and the source 11 across part of a voltage divider 9, 10 connected across the supply circuit so that the current through the transistor depends on the supply voltage and produces a voltage across the resistor 7 in opposition to that produced by the voltage across the resistor 6 due to the discharge current. A Schmitt trigger 4 is responsive to the resultant voltage and controls the operation of a quick-acting switch, e.g. a grid-controlled rectifier, to cause a brief interruption of the supply or final interruption of the supply in the event of frequent repetitions of the arcing disturbance. Three similar circuits may be used for a three-phase apparatus, the transistor outputs being connected in parallel.
Patent GB-1132579-A (GB)
Title: Electroacoustic transducers
IPC: G10K13/00
Filed: 1965-12-02
Abstract: 1,132,579. Transducers. COMPAGNIE DES COMPTEURS. 2 Dec., 1965 [3 Dec., 1964], No. 51186/65. Heading H4J. A subaqueous, infrasonic (5 c.p.s.), moving coil transducer comprises a light alloy, annular diaphragm 5B attached to a light alloy, cylindrical coil former which is in sliding, frictional engagement with a nylon sheath surrounding the core of a potshaped permanent or electromagnet 1. The diaphragm is guided and limited for axial movement by means of four 90-degree spaced, helical coils 8 which slide on respective rods attached to the outer polepiece 10. The latter is provided with ducts 15 for allowing cooling water to flow around the electromagnet coil and the moving coil. A lifting ring 20 is attached to the transducer. The resonant frequency (150 c.p.<SP>s.</SP>) of the transducer may be adjusted by attaching it to a timber batten. Preferably the transducer is mounted on the inside of a ship's hull which acts as a baffle.
Patent GB-1344664-A (GB)
Title: Game apparatus
IPC: A63F9/06
Filed: 1971-11-04
Abstract: 1344664 Puzzle game M I GLASS [trading as MARVIN GLASS & ASSOCIATES] 4 Nov 1971 [16 Nov 1970] 51340/71 Heading A6H A puzzle game comprises a plurality of master pieces 12 each provided with puzzle piece receiving areas (e.g. recesses 26-34) a plurality of puzzle pieces 14a-14d each adapted to fit at least one of the puzzle piece receiving areas and a puzzle piece dispenser 42. In use, a stack of puzzle pieces is held in the chimney 50 of the dispenser 42. A player pulls a lever 80 to deliver a puzzle piece 14e through a portal 48 of the dispenser. The player attempts to fit the puzzle piece 14e on a receiving area of a master piece 12. If the player cannot do so then the puzzle piece is returned to the stack of such pieces in the dispenser through a slot 54a.
Patent GB-1270877-A (GB)
Title: Halogenated silicon-containing cyclic acetals and a process for their preparation
IPC: C07F7/08
Filed: 1969-10-20
Abstract: 1,270,877. Silicon-containing cyclic acetals. SOC. INDUSTRIELLE DES SILICONES. 20 Oct., 1969 [18 Oct., 1968], No. 51389/69. Heading C3S. Halogenated silicon-containing cyclic acetals of the formula where R 1  and R 2  are Me, Et, Pr, i-Pr or Ph and X 1 , Xa and X 3  are F or Cl are prepared by reacting a disiloxanediol of the formula with a hexahalogenoacetone of the formula The latter compounds may be used in the anhydrous or hydrated form. Examples are hexachloro -, hexafluoro -, pentafluorochloro-, sym. dichlorotetrafluoro - and 1,1,3 - trichlorotrifluoro-acetone. Mixtures may be used. A catalyst such as an acid or activated clay may be employed. Uses.-Anti-foaming agents.
Patent GB-1322563-A (GB)
Title: Gas-blast circuit-breaker
IPC: H01H33/825
Filed: 1970-10-29
Abstract: 1322563 Gas blast circuit breakers BROWN BOVERI & CO Ltd 29 Oct 1970 [31 Oct 1969] 51418/70 Heading H1N A gas blast circuit breaker has an insulating housing 1 filled with high pressure gas and has main parallel feed contacts 3 and arcing contacts 4. Moving contacts 8 and 7 are mounted on a hollow rotatable tube 5 having oppositely positioned nozzles 6 through which the arc extinguishing blast passes when an exhaust valve in the tube is opened. The contacts 4 and 7, open after the main contacts 3, 8 separate. The arc is subsequently transferred to arcing conductor 10 mounted on the baffle wall 9 which partitions the tube.
Patent GB-1079549-A (GB)
Title: Improvements in or relating to casings for semiconductor elements
IPC: H01L23/488
Filed: 1964-12-18
Abstract: 1,079,549. Semi-conductor devices. CKD PRAHA NARODNI PODNIK. Dec. 18, 1964 [Dec. 21, 1963], No. 51555/64. Heading H1K. The connection between a semi-conductor wafer attached to the base of a vacuum-tight casing and an electrode mounted in a bushing at the top of the casing includes two interengaging parts one of which resiliently fits within the other so that the arrangement prevents the semi-conductor wafer from being damaged when the various parts undergo thermal expansion. The bushed electrode 5 may itself form one of the parts. Inside the casing it is provided with a bore into which fits the end of a body 6 attached to the semi-conductor wafer 1. The end of the body is in the form of a cylindrical or frusto-conical piece which has been split longitudinally in two planes to provide four flexible prongs 6. In a different embodiment the bushed electrode has a wide bore within which is attached the springy portion of a wire extending from the bore. The rigid end of this wire fits within the prongs of a member attached to the semi-conductor wafer.
Patent GB-1454275-A (GB)
Title: Sighting discs particularly for surveying
IPC: G01C15/00
Filed: 1973-11-09
Abstract: 1454275 Indicating apparatus CARL ZEISS JENA VEB 9 Nov 1973 [20 Nov 1972] 52032/73 Heading G1J A graduated plate for use in determining zenith and nadir points in surveying has coarse marginal scales 8 and corresponding fine scales 10, 11 which intersect at the centre of the plate. The plate de described is transparent and may be reversed, being slidable in a frame 4, 5, 6 having a removeable side 7. Mirror image numerals are provided for reading of the fine scales from both sides. The frame bears a further scale 24 for co-operation with a scale 20 on a bar 21 slidable on dovetails 13, 14 or 15, 16, the bar having point marking means 23 or a cursor 22. Illuminating means (not shown) is slidable on the keyways not used by the bar 21.
Patent GB-1132989-A (GB)
Title: Magnetographic process
Inventor: GREINER JOACHIM
IPC: G03G5/16
Filed: 1965-12-08
Abstract: 1,132,989. Testing with magnetic tapes. AGFA GEVAERT A.G. 8 Dec., 1965 [8 Dec., 1964], No. 52118/65. Heading G5R. [Also in Division H1] A magnetic tape 5, preferably one made as described in Division H1, in which the magnetic layer 4 consists of acicular particles of CrO 2  aligned along the direction 13, is laid on a testpiece 1 along which a field Hf is exerted. At a fault 3, the fringe field is recorded in the tape. The vertical components H StS  relate to the fault 3, while the horizontal components H StL  may be partly due to the fault but are mainly due to direct magnetization by the test field Hp. While this is much greater than H StS , the orientation of the particles in the tape prevents the component H StL  from saturating the tape. The tape is then spliced into a loop and played back on a tape recorder at audio playback speed. The fault 3 is then adjudged orally by loud-speaker or measured with a valve voltmeter or other measuring instrument.
Patent GB-1455863-A (GB)
Title: Glove boxes
IPC: G21F7/047
Filed: 1973-11-09
Abstract: 1455863 Glove boxes BRITISH NUCLEAR FUELS Ltd 23 Oct 1974 [9 Nov 1973] 52248/73 Heading B4Q A cover mountable about the glove port 14 in a glove box comprises a number of flaps 13 of Pb-loaded flexible material, e.g. natural or synthetic rubber, which can be pushed aside by a hand to permit access to a glove 22 fixed in the port 14 yet overlap to close off the port when the hand is withdrawn. The cover may be formed on a former having a hemispherical end, to create in the cover a hemisphere which is then slit to form the flaps. Only the flaps need be Pb-loaded and they are preferably provided with a Pb-free rubber coating on both surfaces. Two circumferential grooves 20, 21 are formed in the glove port 14 for fixing the glove 22. The cover has a peripheral beading 12 located in the groove 21 and secured by a circular clip 24.
Patent GB-1500633-A (GB)
Title: Process for the production of even-series omega-amino acids
Filed: 1975-12-24
Abstract: 1500633 γ-Aminobutyric acid and #-aminocaproic acid INST ELEMENTOORGANICHE SOEDIN AKAD NAUK SSSR 24 Dec 1975 52830/75 Heading C2C A process for making an #-aminocarboxylic acid of formula where n is 1 or 2, comprises telomerizing ethylene with a methyl ester of a haloacetic acid of formula where R is a C 1-4  alkyl group, and either X = Br and m = 1 or X = Cl and m = 2 or 3 in the presence of a free-radical initiator to give a compound of formula and (a) when X = Br, reacting the telomer with ammonia to give an alkyl ester of the desired compound; or (b) when X = Cl, reducing the telomer to one of the same formula where X = Cl and m = 1 and then reacting the latter with ammonia to give an alkyl ester of the desired compound and finally hydrolysing the aminoester products of (a) or (b) above.