baber/WOPTO huggingface dataset:
Patent GB-1427029-A (GB)
Title: Radio receiving apparatus
IPC: H03G3/34
Filed: 1972-12-14
Abstract: 1427029 Radio receiving systems COWARD STEAM-SHIP CO Ltd 13 March 1974 [14 Dec 1972] 57746/72 Heading H4L Radio receiving apparatus includes means for detecting a speech signal below the white noise level, means for generating a signal for the exact duration of the speech signal and a gate in the audio-frequency channel, the generated signal being used to open the gate for the period of the speech signal whereby the white noise is muted between speech syllables. As shown in Fig. 1 the audio signal from the radio receiver is supplied via terminal 30 and the gate 26 to the output stage 28 and via amplifier 10 to rectifiers 12, 14. The outputs of rectifiers 12, 14 are supplied to circuits 16, 18 respectively, circuit 16 having a short time constant so that its output rises quickly when a speech syllable appears and follows the speech signal and circuit 18 having a long time constant so that its output adjusts slowly with changing noise level and it has substantially no response to speech syllables. These two outputs are compared at 20 and when there is no speech present they are equal and the output of the comparator is "0". As soon as the first syllable of speech occurs the output of 16 rises rapidly to switch the comparator to its "1" state. The output of the comparator is a square wave for the duration of the syllable, which is shaped by rounding off the corners at 22 and supplied as a control signal to the gate 26. The output from 20 is also supplied to a gate 24 to prevent the output of circuit 18 from being affected by the speech signal.
Patent GB-1273896-A (GB)
Title: A torsional oscillator
IPC: G01N19/00
Filed: 1970-12-08
Abstract: 1,273,896. Material testing. LONZA Ltd. Dec.8, 1970 [Dec. 17, 1969], No.58316/70. Heading G1A. In a torsional oscillation device for testing a sample 12 of plastics material held under tension by a weight 27 between a fixed clamp 13 and a clamp 8 which may be oscillated by pulses in an electromagnetic coil 14, the sample is maintained at a required temperature by enclosure in a chamber 34, the oscillation is monitored by light from a source 17 falling on a photo-cell 18 by way of a mirror 10 mounted on the oscillating shaft 9 and any extension of the sample is measured by the response of an electro-optical arrangement 28-29 to a neutral wedge 28 dependent from pivoted lever 3, 4 or to a string controlled potentiometer. The apparatus includes electro optical apparatus 45, 46 for measuring transparency, and calculating, programming and recording apparatus for determining thickness alterations and the shear modulus of the material.
Patent GB-1287006-A (GB)
Title: Overdrive transmission
IPC: F16H61/00
Filed: 1969-12-01
Abstract: 1287006 Variable speed gears BORG WARNER CORP 1 Dec 1969 [6 Jan 1969] 58646/69 Heading F2D An overdrive planetary gearset 20 has a friction brake 50, a positive clutch 58, 59 and a one-way clutch 21, the clutch 58, 59 (e.g. spring applied) being controlled by an actuator 66 fed with fluid pressure (e.g. from a pump 152 driven at 35 from the output) via a valve 150 controlled manually at 84. The control may include a plunger 98 actuated by a solenoid 97 in an electric circuit with a speedometer 110, an engine manifold vacuum sensor 116, a kickdown button 115 and a lamp 118. The circuit and solenoid may be replaced by a manually operable button, Fig. 4 (not shown). The two two-position buttons of Fig. 4 may be replaced by a single three-position button connected direct to the spool 162 of the valve 150. The spool 162 of valve 150 has three positions: brake engaged for over-drive, fluid pressure being allowed only when the clutch 58, 59 is disengaged; both clutch 58, 59 and brake 50 disengaged; and clutch 58, 59 engaged for lockup. Lock-up also occurs when the system is without pressure. The overdrive gear-set may directly drive a differential 15, 16. (For Figures see next page.)
Patent GB-594670-A (GB)
Abstract: 594,670. Aircraft guns ; sights. BRISTOL AEROPLANE CO., Ltd., and WOTTON, J. Dec. 21, 1944, No. 25644. [Classes 92 (i) and 92 (ii)] A sight mounting for use by a gunner in a prone position moves about two axes, one axis C being fixed and substantially coincident with the axis about which the gunner nods his head, and the other axis being movable and corresponding to the axis about which the gunner turns his head. As shown in Fig. 1, the gunner is supported in a prone position in a well 11 of an aircraft by a leg-supporting pad 15 and a pair of chest-supporting pads 16, and views the target through a panel 12. Within the well is a sight 18 and a control 17 for the power means for moving the sight and guns, and outside the well the guns 13 are mounted for training movements on a cylinder 14 which is rotatably mounted to impart the elevating movements to the guns. As shown in Fig. 4 the sight carrier 23 is pivotally mounted at 26 on a link 22 connected to a pair of links 20, these links 20 being carried by brackets 21 rotatably mounted in bearings 19. The axis C about which links 20 move, when driven by an elevating shaft 29 through worm wheel 28 and quadrant 27, coincides with the nodding axis of the gunner. Actuation of training shaft 32 causes the links 20 to rotate about the axes of the shafts connecting them to brackets 21, these axes being parallel to the axis E<1>, Fig. 1, about which the gunner turns his head. Consequently the sight also turns about axis E<1> and parallel linkage 24, 25 is provided for rotating the sight on pivot 26 so that the line of sight F at all times passes through a focal point. The Provisional Specification also describes an oval head support for the gunner such support engaging the gunner's forehead and the sides of his face and having side lugs fitted to the ends of an elastic cord which passes around an overhead pulley. The pulley also is supported by an elastic cord.
Patent GB-1453703-A (GB)
Title: Substituted cyclopropylmethylamines processes for their preparation and pharmaceutical compositions containing them
IPC: C07C209/60
Filed: 1972-12-28
Abstract: 1453703 Cyclopropylmethylamine derivatives SCIENCE-UNION ET CIE SOC FRANCAISE DE RECHERCHE MEDICALE 13 Dec 1973 [28 Dec 1972] 59886/72 Heading C2C Novel compounds have the Formula I in which R 1  and R 2  which are the same or different, each represents a hydrogen atom, a C 1-6  alkyl radical, an unsubstituted cyclopropyl radical or a cyclopropyl radical bearing one or more C 1-6  alkyl radicals; R<SP>1</SP> represents a C 1-6  alkyl radical; R 3  represents a hydrogen atom or a C 1-6  alkyl radical; A represents -O-, -S-, or -NH-; n is 0, 1 or 2; and n<SP>1</SP> is 0, 1, 2 or 3. Also claimed per se are the acid addition salts of compounds of Formula I with mineral or organic acids and the optically active forms of said compounds of Formula I (e.g. obtained by resolution with an optically active acid). The compounds of Formula I are obtained by condensing a compound of Formula II either (a) with a #-haloalkyl isocyanate or isothiocyanate of Formula III in which A is -O- or -S-, Hal is Cl or Br and n<SP>11</SP> is 2, 3 or 4, to form a disubstituted urea or thiourea of Formula IV and cyclizing the latter by heating (e.g. in aqueous medium at 50-120 C.) to form a compound of Formula I in which A is -O- or -S-; or (b) with a cyclic S-methyl isothiourea of Formula V in which n is 0, 1 or 2 and preferably by heating to 50 to 150 C. in a polar solvent, to form a compound of Formula I in which A is -NH-. Compounds of Formula I in which A is an oxygen atom are also obtained by reacting a compound of Formula II with an aryl haloformate of formula in which Hal<SP>1</SP> is F or Cl and Ar is a phenyl radical optionally substituted by one or more radicals of electrophilic character (e.g. -NO 2 ), preferably in the presence of a basic agent, to produce a carbamate of Formula VI condensing the latter with an aminoalkanol of Formula VII (e.g. in an aqueous medium) to obtain a compound of Formula VIII submitting the latter to the action of a chlorinating brominating agent to form the corresponding #-haloalkyl urea and cyclizing this latter compound by warming to produce a compound of Formula I in which A is oxygen. The compounds of Formula I are physiologically active and are included in pharmaceutical preparations.
Patent GB-1298825-A (GB)
Title: Window frame members which comprise a plastics-covered core
Inventor: KELLER JOHANN
IPC: E06B3/20
Filed: 1969-12-09
Abstract: 1298825 Plastics-covered window frames J KELLER 9 Dec 1969 [9 Dec 1968] 60154/69 Heading E1J A window frame is constructed from a plurality of damp-proof frame members, each of which comprises a core 38, e.g. of wood, provided with one or more bores 24, 26, 46 at its ends and totally covered with a coating of plastics material 42, the bores receiving connecting bolts 28, 48 to form corner joints of the frame. The plastics coating may be of a glass-fibre-reinforced polyester, which is moulded around the core after impregnating the core with a polyester solution and making incisions therein to improve the bonding. The connecting bolts are firmly set in the bores by a rapid-hardening polyester or epoxy resin. Main frames or wing frames may be so constructed.
Patent GB-1411779-A (GB)
Title: Microwave antenna with radome
IPC: H01Q19/13
Filed: 1972-12-29
Abstract: 1411779 Aerials R J GRENZEBACK 29 Dec 1972 [12 Jan 1972] 60208/72 Heading H4A A microwave aerial has, in combination, a reflector having a parabolic inner electrically conductive surface, a microwave feed in position to radiate energy to and from the focus of said surface, and a radome having a parabolic inner electrically non-conductive surface. The reflector and the radome are connected together such that their said inner surfaces are confocal. As described, an aerial 12 comprises a feed-horn 46 and four 90 degree reflectorradome segments, of which two, referenced 18, 20, are visible in Fig. 2. Said segments have integrally formed peripheral flanges 32 by means of which they are bolted together, to provide an enclosure having a reflector portion 22 at one end with a parabolic shape reflecting surface 28 and a radome portion 26 at the other end with a parabolic shape interior surface 30. The foci of the surfaces 28, 30 are coincident at a point P, which is also the phase centre of the horn 46. The portions 22, 26 are spaced apart by a cylindrical shroud portion 24 having an interior surface 52, which is corrugated or otherwise made irregular. The segments may be made of fibreglass, and the surfaces 28, 52 of the reflector and shroud portions rendered conductive by metal spraying, or by adhering metal foil or mesh thereupon. The construction ensures that any part of energy from the horn 46 which has been collimated by the reflecting surface 28 and is then reflected back off the interior surface 30 of the radome, passes through the common focus P so that it may be re-collimated by the surface 28. The shroud portion 24 reduces diffraction effects around the edge of the reflector portion 22, and may be omitted if desired. The segments 18, 20, &c. may be nested for transport (Fig. 3, not shown). The construction is also applicable to other forms of parabolic reflector aerials, e.g. a parabolic trough reflector aerial. Specification 1,411,780 was divided from this.
Patent GB-1338238-A (GB)
Title: Multiple gaseous discharge display memory panel
IPC: H01J17/20
Filed: 1970-12-18
Abstract: 1338238 Discharge display panels OWENSILLINOIS Inc 18 Dec 1970 [19 Dec 1969] 60271/70 Heading H1D A gaseous discharge display panel comprises an ionizable gas within a chamber formed by a pair of dielectric charge storage members backed by electrodes, the electrodes behind each dielectric member being transversely oriented with respect to those behind the other dielectric member so as to define a plurality of discharge units, the gas pressure being such as to be adjacent the minimum of a plot of breakdown voltage against the product of the gas pressure and the separation of the dielectric members. The gas preferably comprises 99À5 to 99À9% atoms of neon, the remainder being at least one gas selected from argon, krypton, and xenon. The dielectric members are preferably 1 to 2 mils thick, of dielectric constant about 16, and separated by less than 10 mils. The product of the gas pressure and dielectric separation should be in the range 4À5 to 5À1 centimetre-Torr.
Patent GB-1276501-A (GB)
Title: Distillation stills
Inventor: HOLT LESLIE JAMES
IPC: G01N25/14
Filed: 1968-05-16
Abstract: 1276501 Distillation of water and other liquids control of heating L J HOLT 4 Aug 1969 [16 May 1968 19 Dec 1968] 23267/68 and 60293/68 Heading B1B In a distillation apparatus, the liquid to be distilled, e.g. water, is boiled in a vessel 10 by heaters 11 which are put into or out of operation by an electric circuit operated by a switch 12 responsive to the pressure of the water being supplied to vessel 10 via chamber 17, restricted-outlet tubule 24 pipe 31 and constant-level device 27, the heaters being made inoperative when the pressure falls below a predetermined value. The vapours flow through outlet 44 to condenser 14, and the condensate is received in vessel 15 but when the pressure therein rises above a predetermined value, a second switch 13 controlling the heaters 11 is opened by device 45 and the heaters are put out of action. The feedwater first flows through condenser coil 16 and enters chamber 17 through inlet tubule 23. Chamber 17 contains a tube 20 which has an open lower end but is connected at the upper end to switch 12 by pipe 18. The head of water in chamber 17 pressurizes the air in pipe 18 and, under normal flow conditions, this pressure maintains switch 12 closed; but if the pressure falls below a predetermined value, the switch opens and the electric circuit to heaters 11 is interrupted until the pressure of the water supply returns to normal. Device 45 acts on switch 13 by air-pressure, the electric circuit of the heaters 11 being automatically interrupted if vessel 15 becomes excessively filled with condensate. The electric circuit is automatically closed again upon withdrawing a sufficient quantity of condensate from vessel 15. Excess water, together with scale and sediment from vessel 10, flows out through overflow 34. Preferably, the still is heated by electrical heating means, although it may be gas or steam heated in which case the switches may be arranged to make or break the electrical supply to electrically-operated valves controlling the gas or steam supply to the heaters.
Patent GB-1278639-A (GB)
Title: Improvements relating to gas lasers
Inventor: HEPBURN WILLIAM DUNN
IPC: H01S3/036
Filed: 1969-12-12
Abstract: 1278639 Lasers FERRANTI Ltd 3 Dec 1970 [12 Dec 1969] 60659/69 Heading H1C In order to mitigate the effect of dissociation of the active medium, e.g. CO 2 , N 2 , He of a gas laser the laser discharge tube is connected in a closed-circuit gas circulation system which includes a reaction vessel maintained at a temperature at which some or all of the dissociation of the active medium occurring in the discharge tube is reversed. The gas mixture is extracted from one end of the discharge tube by means of a pump and passed via an oil mist filter through a heated alumina tube reaction vessel. After passing through the reaction vessel the gas mixture is returned to the input end of the discharge tube via a silica gel trap, to remove any water vapour or organic vapours and a throttle valve. The gases may be cooled before returning to the discharge tube.
Patent GB-1325050-A (GB)
Title: Process for the production of a selected aromatic hydrocarbon
IPC: C07C5/27
Filed: 1970-12-22
Abstract: 1325050 Selective adsorption; isomerization UNIVERSAL OIL PRODUCTS CO 22 Dec 1970 [30 Dec 1969] 60721/70 Heading C5E A selected aromatic hydrocarbon is produced by (a) passing an isomerization zone effluent containing an isomeric mixture of aromatic hydrocarbons including the selected hydrocarbon into contact with a crystalline aluminosilicate adsorbent, e.g. zeolites X or Y, to effect selective adsorption of at least one aromatic isomer; (b) withdrawing a raffinate stream containing isomers less selectively retained; (c) contacting the adsorbent with a desorbent to give an extract stream comprising desorbent and selectively adsorbed aromatic isomer; (d) isomerizing part of either the extract or raffinate streams and recycling the effluent to the adsorbent as in (a). Fresh feed may be mixed with the charge to the isomerization zone or with part of the isomerization effluent. The zeolites may contain one or more metallic cations selected from K, Ba, Ag, Cs, Pr, Nd, Sm, Be, Mg, Rb, and Cu, and the selectively adsorbed isomer from a mixture of xylenes and ethylbenzene may be m or p xylene. Adsorption and desorption are preferably effected in the liquid phase. Benzene, toluene and diethylbenzene are suitable desorbents. Fractionation may be used to top and bottom the isomerization effluent, to recover desorbent from the raffinate and the extract. Isomerization may be effected with a catalyst comprising a Pt group metal and a halogen component on an Al 2 O 3  base.
Patent GB-608971-A (GB)
Abstract: 608,971. Bakers' ovens. BAKOVENBOUW VOORHEEN H. P. DEN BOER N. V. Feb. 15, 1946, No. 4870. Convention date, July 15, 1944. [Class 51(ii)] In a bakers' oven, the roof comprises transverse slabs each consisting of a part 10 which is supported on T-irons 9, and a part 11 spaced from the part 10 and joined thereto by an apertured partition 12. The burners 13 are arranged in the spaces between the parts 10, 11. Insulating material 7 is supported by the parts 10 and is covered by a top wall 8. The partitions 12 may be inclined or, as in Fig. 2, may be ververtically arranged in the middle of the part 11.
Patent GB-1280200-A (GB)
Title: Improvements in venting closures
IPC: H01M2/12
Filed: 1969-12-24
Abstract: 1280200 Vent plug UNION CARBIDE CORP 24 Dec 1969 [27 Dec 1968] 62934/69 Heading B8T A non-spill vent plug 10 for a container has a chamber 16 with an opening 15 to the atmosphere, a passage 13 in the plug venting the space above liquid held in the container to the chamber which has a partial filling of a liquid metal. The opening 15 and an opening 21 from the chamber 16 to the venting passage 13, may be covered with porous bodies 17 and 23 respectively which vent gas but are impervious to liquid metal such as mercury, gallium, woods metal, tin and lead so that when the plug is tilted, Fig. 2 (not shown), air locks are created at (A) and (B) preventing container liquid from reaching the underside of the porous body 23. The plug and porous bodies may be made of material which will not amalgamate such as stainless steel, nickel or plastics or the openings may be made very small or annular to obviate the use of the porous bodies. The vent passage may be shielded by a baffle.
Patent GB-2022865-A (GB)
Title: Method and Machine for Expanding Tubes in a Tube Wall
IPC: B21D39/06
Filed: 1978-06-10
Abstract: During the expanding of tubes in a tube wall, by a roller-type rolling tool, the variable effort applied to the tool is measured simultaneously with a linear variable of the expanding operation over three successive stages or areas affected by the expansion, viz, the area of elastic deformation of the tube work, the area of plastic deformation of the tube up to the moment of the engagement of the external surface of the tube with the surface of the opening of the tube wall, and the area of elastic deformation of the tube wall, and the control over the expanding operation is optimised by processing the measured data, in accordance with the geometric dimensions and the mechanical properties of the materials of the tube and of the tube wall.
Patent GB-2000723-A (GB)
Title: Machine for stacking straw bales and the like
IPC: A01D85/00
Filed: 1978-06-20
Abstract: A machine for stacking objects such as straw bales has a frame for containing a stack, means 2, 3 for carrying the object to the frame means 6, 7 for releasing the frame from a completed stack and, for receiving objects and distributing them in predetermined places in the stack, a pair of feeding rollers 4. <IMAGE>
Patent GB-2030021-A (GB)
Title: Improvements in or relating to signal filtering apparatus
IPC: H03H11/12
Filed: 1978-09-15
Abstract: This invention provides a filter for an ultrasonic imaging apparatus which differentiates the signals twice and then subtracts the second differential from part of the original input. The circuit is efficiently used in a recirculating loop which includes a delay line for timing where the delay line also imposes a component of filtering. In such an apparatus it has been suggested to obtain ultrasonic reflection data for reflection points known to lie on lines or arcs perpendicular to the ultrasonic beam. These are written into store, such as cathode ray storage tubes, in positions relating to the positions of the reflecting lines in the examined body. Data for a series of lines are filtered, so that when all are summed in store a true representation of the examined body results. <IMAGE>
Patent GB-2013651-A (GB)
Title: Stream Feeder
IPC: C03B37/085
Filed: 1978-12-15
Abstract: A feeder 10 is provided for supply molten mineral in the form of streams. The feeder comprises upwardly extending sidewalls 16, 17, a bottom wall extending between the sidewalls, the bottom wall having a plurality of orifices 20 through which molten mineral material is supplied in the form of streams, and bottom wall supporting means comprising a support member (30, 32) extending between the bottom wall and a first sidewall (16, 17 respectively), the member being generally in spaced apart relationship with the bottom wall and the sidewall except at the end regions (34, 38 or 36, 40 respectively) of the member. <IMAGE>
Patent GB-2010311-A (GB)
Title: A process for the separation of n-paraffins in oil fractions
IPC: C10G32/00
Filed: 1978-12-18
Abstract: n-paraffins having more than 20 carbon atoms are separated from oil by removing the aromatic fraction (e.g. by liquid chromatography on alumina and silica) to leave a saturated fraction which is then contacted with a 5 ANGSTROM  molecular sieve at an elevated temperature under ultrasonic vibrations in the presence of a solvent, to adsorb n-paraffins. The n-paraffins can be desorbed in the presence of a solvent and under ultrasonic vibrations and analysed by liquid chromatography to enable the n-paraffin distribution in the oil to be determined.
Patent GB-2014269-A (GB)
Title: Reduction Unit of Drilling Motor
IPC: F16H1/28
Filed: 1979-01-05
Abstract: A reduction unit of a drilling motor comprises a casing (1), input and output shafts (6, 8) with spherical bearings (11), and a 2-stage epicyclic reduction gear (4) in an oil-filled chamber (A) delimited by seals (7, 9) protected against contact with the drilling fluid, by buffer fluid in divided spaces (B, C). The first stage of the reduction gear has friction elements (28, 32, 30) to eliminate torque fluctuations and the second state has toothed elements (29, 33, 31) of which planets (33) are mounted in sleeves with convex external surfaces eliminating overloading of the gear. <IMAGE>