baber/WOPTO huggingface dataset:
Patent GB-931780-A (GB)
Title: Improvements in or relating to automatic gain and frequency control for television receivers
IPC: H04N5/50
Filed: 1959-10-26
Abstract: 931,780. Automatic frequency control systems; radio receiving circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 26, 1959 [Oct. 29, 1958], No. 36145/59. Class 40 (5). In a superheterodyne television receiver receiving a vestigial sideband television signal the automatic gain control at low signal levels is arranged to de-tune the A.F.C. discriminator circuit or local oscillator so that the vision carrier is stabilized at a higher position on the Nyquist sloping flank of the I.F. pass-band. Amplified A.G.C. voltage from a gain control tube 2 may be applied to vary the capacitance of a back biased semi-conductor diode 18 connected across the discriminator tuned circuit in series with blocking capacitors 16, 17. The discriminator output is therefore varied and applied through a cathode follower 24 to vary the resistance of a diode 25 connected in series with capacitors 26, 27 in the local oscillator circuit, and tune it under both A.F.C. and A.G.C. control. To compensate the change in output of valve 7 when the Nyquist flank point is altered an off-tuned circuit 45, 46 may be connected across the cathode circuit and energized from the suppressor grid of the preceding tube 4, this grid being energized capacitively from the anode; and the tube 7 itself may also be a limiter. The tube 7 may be blocked during interference pulses by an input 48. A switch 49 may disconnect the Nyquist flank control. The diode 18 may alternatively be a voltage variable ferro-electric capacitor. In a modification the amplified A.G.C. voltage is applied directly to vary the resistance of diode 25 in the local oscillator circuit. Further, the A.G.C. voltage may be derived from the cathode circuit of tube 2, and applied to the cathode circuit of tube 24. The discriminator may alternatively be tuned to the sound I.F.
Patent GB-792160-A (GB)
Title: Process for the degasification of molten steels
IPC: C21C7/10
Filed: 1955-12-16
Abstract: A process for the degasification of molten steel at a temperature higher than the usual casting temperature comprises allowing the steel to fall freely through a vacuum chamber and divide into droplets of 10-103 mm. diameter such division being effected by maintaining the vacuum within 30-0.1 mm. Hg, by using an inlet of 10-103 mm. diameter such division beat a ferrostatic pressure above the inlet at least 300 mm. height of column.  A steel rich in gas should be poured from a large inlet, the pressure being within the upper part of the range.  The correct conditions may be found by photographing the pouring operations with a high speed camera (5000 frames per sec.) and measuring the droplet size.
Patent GB-1325430-A (GB)
Title: Method of producing tl allylic nickel complexes
IPC: C08F36/04
Filed: 1971-08-02
Abstract: 1325430 #-Allylic nickel complexes VSESOJUZNY ORDENA TRUDOVOGO KRASNOGO ZNAMENI NAUCHNO - ISSLEDOVATELSKY INSTITUT SINTETICHESKOGO KAUCHUKA IMENI AKADEMIKA SV LEBEDEVA 2 Aug 1971 [3 Aug 1970] 36216/71 Heading C2J #-Allylic nickel complexes, especially of general formula where R<SP>1</SP>-R<SP>5</SP> are H, alkyl, cycloalkyl or alkenyl, X is Cl, Br, I, CN, SCN, CH 3 COO, CCl 3 COO, CF 3 COO or p-CH 3 C 6 H 4 SO 3 , m is 1 or 2 and q is 4 to 9, are prepared by heating nickel tetracarbonyl in an inert solvent with a diene in the presence of a proton acid (especially HX where X is as above) and removing the evolved carbon monoxide. Reaction may be effected at 20-75‹ C. for 5-150 minutes in an ether, n-hexane, toluene or benzene as solvent. In the examples 1,3-dimethyl-#-allyl; #-crotyl; 1,1 - dimethyl - # - allyl and # - cyclohexenyl nickel compounds are prepared from the appropriate dienes, the other ligand being one of the X's above.
Patent GB-302169-A (GB)
Title: Improvements in or relating to apparatus for delivering measured quantities
IPC: G01F11/28
Filed: 1928-12-10
Abstract: 302,169. Tailleferre, H., (Assignee of Soc. d'Etudes pour le Transport et la Manutention de Liquides Alimentaires, called Soc. Tamala). Dec. 9, 1927, [Convention date]. Direct air-pressure apparatus; valves for pressure fluid, arrangement of.-Compressed air entering by way of the pipe 29 and plug-valve 4 raises liquid from a reservoir through a pipe 30 into a measuring-vessel 1 from which, after the required level has been attained, it is expelled through the mouth 24. The container 1 is held between a base 2 and head 8 by a hollow strut 18. Supported within the container 1 are concentric tubes 16, 17, the outer tube 17 being secured to the depending portion 8<1> and the inner tube 16 to the plug 10. Straight and helical slots 41, 42 are cut in the two tubes and the position at which the two slots cross and afford an opening into the outer part of the container 1 is varied by rotating the plug 10. The outer part of the plug is milled and calibrated and may be set with reference to an index 13 to provide the required position of the opening through the slots 41, 42 and at the same time place transverse passages 14 into register with the passage 15 in the head 8. Concentric tubes 21, 23 are also mounted within the container 1, the inner being in communication with the interior of the tube 16 by way of a passage 24<1>, and the outer by way of a passage 26 with the main part of the container 1. Both tubes 21, 23 are open at the top near to the mouth 24, but the outlet from the smaller tube is obstructed by an adjustable needle 46. The pipe 18 is divided by a spring- pressed diaphragm valve 33. A cup 27 affords a support for measuring chamber 1 and forms the upper end of a tube 30 from the liquid supply reservoir. It encloses a ball-valve 44, and a plug valve 43. A lateral extension supports bearings 27<1> for the plug valve 4 and connections to the pipes 29, 29<1>. At starting the plug 10 is set, and the valvo 4 opened. Compressed air passes the valve 33 and traverses the measuring chamber and passages to the mouth 24. On the cock 43 being turned the compressed air passes through the tube 29<1> and causes the liquid to lift the valve 44, and rise in the container 1 until it overflows into the U-tube 24 through the intersection of the slots 41, 42. The free air flow to the atmosphere is thus obstructed, and the resulting pressure closes the valve 44 and ejects the liquid from the container. As soon however as there is only atmosphere pressure above the valve 44 the latter again rises and allows the container 1 to be recharged.
Patent GB-1473527-A (GB)
Title: Electrode suitable for the generation of hydrogen peroxide
IPC: C25B1/30
Filed: 1974-08-20
Abstract: 1473527 Electrolysis electrode KERNFORSCHUNGSAMLAGE JULICH GmbH 20 Aug 1974 [24 Oct 1973] 36623/74 Heading C1A [Also in Division C7] An electrode, useful as a porous cathode in the production of hydrogen peroxide, is made by calcining activated powdered charcoal in a vacuum above 900 C., followed by cooling under vacuum mixing with a solvent containing a binder and a hydrophobic additive and applying this mixture to, and drying it on, an electrically conductive substrate. Calcination may take 2-4 hrs. at 1000-1250 C. under 0À1-10 mm. Hg. The mixture may be made up with rubber and paraffin dissolved in toluene-xylene. The cooled charcoal may be sieved to a grain size up to 80 Á before mixing. The support may be a steel wire net of mesh 0À05-0À3 mm. supported over its area on a nickel screen and the edges of which are precoated with rubber. A screw of PTFE may be applied after drying the coating. The electrode may be regenerated in dilute acid.
Patent GB-1086158-A (GB)
Title: Testing for irregularities in transparent sheet material
IPC: G01N21/896
Filed: 1965-08-26
Abstract: 1,086,158. Checking transparent sheets. FORD MOTOR CO. Ltd. Aug. 26, 1965 [Sept. 1, 1964], No. 36667/65. Heading G1A. To detect irregularities in sheets with nominally parallel faces, a light source 12 and associated sensing unit 17 scan the sheet to measure the local transmitted intensity which is compared with the average intensity. In the form shown the output from the sensor 17 is fed to an amplifier 23, the output of which is split into parts A', B', the latter being fed to an integrating circuit 19 which produces an averaged output B. The latter is multiplied in a multiplier 27, by C, the output from an amplifier 26 fed by the product BC added to A', in the network 25. It is shown that C = A'/B if 26 has a high gain this quantity actuates the indicator 22. The mask 18, associated with the sensor 17, provides a narrow field of view. In another embodiment a separate sensor, placed close to the transparent sheet and provided with a diffuser, is used to generate the quantity B directly.
Patent GB-428557-A (GB)
Title: Improvements in or relating to television and like apparatus
IPC: H04N5/067
Filed: 1933-12-30
Abstract: 428,557. Valve generating circuits; television. LANCE, T. M. C., JOHNSTONE, D. M., and BAIRD TELEVISION, Ltd., 58, Victoria Street, London. Dec. 30, 1933, No. 36731. [Classes 40 (iii) and 40 (v)] In a television or like system, the wave-form of the relaxation oscillator at the receiver is made to conform with that at the transmitter by means of a correcting-wave derived at the transmitter and sent with the synchronizing signal. As shown in Fig. 1, the condenser 2 is charged from a D.C. source through a constantcurrent device such as a screen-grid valve 5, and is discharged through a device 1 when a synchronizing signal is applied at B to its grid. The charging-valve 5 has its control grid biassed by a fixed source connected across the terminals D, E and a correcting-wave is also applied to this grid at the terminals E, F. Thus if curve a represents the saw-tooth wave-form at the transmitter, the rectilinear rising portion of the receiver wave-form c is modified by applying to the grid of valve 5 a wave b so as to result in a curve similar to a. Specification 420,091 is referred to.
Patent GB-962938-A (GB)
Title: Improvements in or relating to a puller device
IPC: B25B27/02
Filed: 1962-09-28
Abstract: 962,938. Extracting tools. A. KLEINBONGARTZ, and E. KAISER, [trading as KLEINBONGARTZ & KAISER]. Sept. 28, 1962, No. 36832/62. Heading B4C. An extracting tool for removing pulleys from shafts comprises a hollow guide spindle 1 having a plunger 2 and adapted to be screwthreaded into a cross-piece 6, and a piston 22 located in a pressure chamber defined by a body member 11 containing hydraulic fluid 20, the guide spindle being adapted to be connected to the body member and the pressure piece connected to the piston. The spindle 1 is provided with a flange 9 clamped to a member 11 by a nut 10, the nut may be split and clamped by a screw 13. The plunger 2 is attached to the piston by means of a ball catch 27 and may be provided with a detachable thrust end portion 3. A small piston 18 is located in a bore in the member 11 and is acted upon by a screw 15. Pulling arms 7 are mounted on the crosspiece. In operation, when the screw 15 is rotated, the oil 20 in the space between the pistons is pressurized so that the plunger is forced outwardly with respect to the spindle. In modifications, the flange 9 may be provided with a screw thread for attachment to the member 11 and handles attached to the screw 15 and member 11.
Patent GB-914193-A (GB)
Title: Cryogenic liquid storage tank
IPC: F17C3/02
Filed: 1960-10-27
Abstract: 914,193. Storing liquefied gases. CHICAGO BRIDGE & IRON CO. Oct. 27, 1960 [Feb. 19, 1960], No. 36841/60. Class 8(2). A cryogenic liquid storage tank 10 comprises an inner storage vessel 16 in which is stored a first cryogenic liquid L, an intermediate -vessel 13 surrounding and spaced from the vessel 16 to define a storage space in which is stored a second cryogenic liquid R, and an outer shell 11 surrounding and thermally insulated from the vessel 13, the liquid R being selected to have the lower boiling temperature of the two liquids and being held at substantially the same or at a greater level than the liquid L to maintain the temperature of the latter below its boiling temperature. As described, the liquids L and R are respectively liquefied oxygen and liquefied nitrogen. The tank 10 is spherical and the outer shell 11 is thermally insulated from the vessel 13 by material such as expanded perlite, rock-wool, cork or fibre-glass and/or by a vacuum. The tank 10 is supported on a plurality of columns 12 and the vessels 16 and 13 are supported by straps or bars 18 and 14, respectively. The liquid gases L and R are normally stored at atmospheric pressure and any gas which boils off from the refrigerant R may be vented to the outside atmosphere through a duct 23 or be circulated through a gas liquefaction unit 24 and returned to the vessel 13 through a duct 25 and inlet means 27. A heat exchanger 19 is disposed in the space between the vessels 16 and 13 and is used to cool a gas such as helium so that the latter may be used for the pressure transfer of the liquid gas L from the vessel 16 to its point of use; the gas used in the pressure transfer may, however, be cooled elsewhere in which case the heat exchanger 19 is dispensed with. The liquid gases L and R may be stored at superatmospheric or subatmospheric pressures. The inner vessel 16 and its supports 18 may be made of aluminium, stainless steel or nickel steel alloys.- Various tank accessories may be used therewith, e.g., manholes, flexible couplers, valves, pumps and systems for emptying and filling the vessels 16 and 13. In a second embodiment, Fig. 2 (not shown), a vertical cylindrical tank has dished ends; alternatively, the ends may be flat or the roof end may be coned. In a third embodiment, Fig. 3 (not shown), a horizontal cylindrical tank has associated therewith a heat exchanger which is external to the tank and through which is circulated the liquid gas refrigerant for cooling of the latter. In a fourth embodiment, Fig. 4 (not shown), a sphercial tank has an outer shell supported on tubular columns and an intermediate vessel supported on tubular columns disposed within the columns for the shell.
Patent GB-915709-A (GB)
Title: Heat-exchange jacket attachment to extrusion apparatus for plastic material
IPC: B29C48/03
Filed: 1961-10-13
Abstract: 915,709. Screen extruders. FRANKLIN RESEARCH & DEVELOPMENT CORPORATION. Oct. 13, 1961 [April 6, 1961], No. 36878/61. Class 87(2). In a screw extruder with a cylindrical housing 12 for a power driven screw 18 and a plurality of heating jackets 20, opposed sections 22 of the jackets are clamped around the cylinder by rod-like metal braces, the jackets having a greater coefficient of expansion than the braces and the cylinder. The jacket sections 22, having cooling fins 31 and an electrically heated zone Z, are provided adjacent their spaced, facing surfaces 30 with pairs of integral lugs 42 connected by pretensioned bolts 32, the lug width between faces 30 and 44, being greater than one half the radius of the cylinder periphery. Alternatively, Fig. 6, the braces may comprise straps 32a having semi-circular positions 50 and straight ends 52 extending through and anchored in lugs 42a, and arranged alternately to embrace opposing jacket sections 22a.
Patent GB-887191-A (GB)
Title: Improvements relating to hydraulic shock absorbers
IPC: F16F9/49
Filed: 1960-10-27
Abstract: 887,191. Hydraulic shock absorbers. GENERAL MOTORS CORPORATION. Oct. 27, 1960 [Nov. 27, 1959], No. 36896/60. Class 108(3). In a hydraulic shock absorber an auxiliary damping piston 50 for limiting excessive rebound is slidably arranged on the piston rod 12 and is engageable through resilient means by an abutment 46 or the main piston which closes restriction passages 55 through the auxiliary piston when excessive re bound occurs. The abut ment 46 has a conica end face 56 engageable with an annular spring 61 located in a conica recess 57 of the auxiliary piston 50 and having in wardly extending spring fingers 60. The auxiliary piston 50 is yieldingly located in thecylinde 10 by a helical spring 5 attached to the cylinde end cap 11.
Patent GB-449327-A (GB)
Title: The manufacture of pure titanium salt solutions
IPC: C01G23/053
Filed: 1934-12-24
Abstract: Pure titanium nuclei for use in the preparation of titanium pigments are obtained by adding an impure titanium sulphate solution to an alkaline reacting solution or suspension of an alkaline-earth metal compound in such amount that the impurities and say 96--98 per cent of the titanium are precipitated, redissolving the impurities in the faintly acid solution by stirring for say 6--8 hrs., filtering off the mixture of titanium oxide and alkaline-earth metal sulphate, washing it with water and treating it with sulphuric acid with or without a soluble sulphate such as sodium sulphate to obtain a strongly basic titanium sulphate solution containing suspended alkaline-earth metal sulphate, heating the sulphate solution for say 1--2 hrs. at 80--90 DEG  C. and quickly cooling to room temperature. The titanium sulphate solution treated should contain so much trivalent titanium that after redissolving the impurities a small amount of trivalent titanium still remains in the solution.  The alkaline-earth metal compound used to precipitate the titanium may be calcium oxide, hydroxide, or carbonate, strontium hydroxide, or barium carbonate.  For the production of pigments 0,5--10 per cent of the nuclei are added to a titanium salt solution at 60--70 DEG  C., and the mixture boiled to precipitate the titanium, which is separated, washed, and calcined.  If calcium sulphate is present in the precipitate, it is removed during the washing step. According to the Provisional Specification, in the first step of the process the partial neutralization may extend to 90--92 per cent of that theoretically possible and may be effected with alkalies generally, including zinc oxide, aluminium hydroxide, or lead oxide.  Further, the pure titanium precipitate obtained by the neutralizing step may be used to obtain pure solutions of titanium sulphate or oxalate, or of titanium potassium sulphate.
Patent GB-1464034-A (GB)
Title: Stock pulper
IPC: D21B1/34
Filed: 1974-08-22
Abstract: 1464034 Stock pulping apparatus ESCHER WYSS GmbH 22 Aug 1974 [11 Sept 1973] 37010/74 Heading B2A A stock pulper for waste-paper comprises a container 1 Fig. 1 to receive stock suspension, with an outer wall formed as a body of revolution a rotor 9 coaxial with the container and bearing agitating arms 8, a screen 7 permitting flow of good stock with a radial component of flow towards the axis and a discharge duct 7' for the good stock. The screen may be cylindrical 7, Fig. 1, or conical or frusto-conical (30) Fig. 3, not shown. Fixed breaker dogs or cams 20 cooperate with the rotor arms to tear stubborn lumps of waste-paper. Heavy impurities are discharged at 12 and light impurities at 13. Waste-paper is supplied via an inlet pipe 14 Fig. 2a.
Patent GB-1244777-A (GB)
Title: Insulation boot for electrical connectors
Inventor: BEINHAUR ERNEST LLOYD
IPC: H02G15/115
Filed: 1969-07-23
Abstract: 1,244,777. Electric couplings. AMP Inc. 23 July, 1969 [1 Aug., 1968], No. 37045/69. Heading H2E. An insulation boot for an electrical connection assembly includes a piston which when moved causes mastic within the boot to seal the apertures provided for the introduction of the conductors. In Fig. 4 a receptacle has tubular legs 4 for conductors 6, 7 which pass through the mastic 100 and piston platform 16. A cap 3 of resilient material is pressed into the receptacle, the cap serrations 15 engaging the protruding arms 10 of the receptacle. Piston platform 16 is forced downwards by the cap, causing the mastic to flow into and seal the apertures between the conductors and legs 4. The bare conductors are electrically connected together by a C- shaped connector 19 and a tapered wedge 20. The connector piece may be stabilized by means of ribs (24) or a compressible substance (26) within the cap member, Figs. 7-10 (not shown). In Fig. 13 a through conductor 107 is connected to a tap conductor 106. A second piston 102a within cap 103 causes mastic to seal the cap aperture 108a. The assembly members and pistons are split, enabling them to be fitted around the conductor 107. Clamping member (130) engages tapered lugs (129) along the sides of the split, after assembly, Fig. 12 (not shown). The insulation boot of Fig. 15 (not shown), is for use with a compression splice (30) crimped to the conductors (51), (52) and comprises threaded parts (50 and 36). The assembly of these three parts causes the pistons (39) to be pushed by the ends of splice (30). In Fig. 3 (not shown) assemblies as shown in Fig. 4 are connected at intervals along a conductor rod.
Patent GB-1525474-A (GB)
Title: Electromagnetic coordinate switching device
IPC: H03K17/00
Filed: 1975-09-09
Abstract: 1525474 Electromagnetic selector switches NIPPON ELECTRIC CO Ltd 9 Sept 1975 [9 Sept 1974] 37057/75 Heading H1N A co-ordinate matrix switch device with remanent magnetic switching elements 401 or 601 extending through apertures, formed at respective crosspoints of a co-ordinate lattice, in a magnetic shunt plate 406 or 602 has second and third excitation coils 404 end 403 or Nx1 and Ny2 surrounding in common the switching elements of each column and row respectively on opposite sides of the shunt plate and first and fourth excitation coils 402 and 405 or Ny1 and Nx2 surrounding in common the switching elements of each row and column respectively; the first coil being on the side of the second coil remote from the plate and the fourth coil being on the side of the third coil remote from the plate. Terminal blocks 604 on the four edges of the plate have projections locating the coil ends and shield plates 407, 408 or 611 are located between all first coils and between all fourth coils and retained by bars 612.
Patent GB-328377-A (GB)
Title: An improved ship's lifeboat fender
IPC: B63B23/36
Filed: 1929-09-17
Abstract: 328,377. Jennings, E. Sept. 17, 1929. Boat-lowering cradles.-A fender for ships' lifeboats comprises a number of swivelling-rollers mounted on a band which can be attached to a lifeboat with the rollers projecting toward the ship. The band 1 is attached by hooks 2, 4 to the gunwale and keel of a lifeboat. Rollers 5 are mounted so as to be rotatable on a pin 6 passing through a bracket 7 which in turn is rotatably mounted on a stud 8 secured to the band 1. The rollers 'are preferably of vulcanized rubber. In place of the bushes 10, bail bearings may be utilized. Resilient rubber pads 11 may be placed on the inner side of the band which is held taut by means of an adjusting screw on flanges 3.
Patent GB-505351-A (GB)
Title: Improvements in or relating to lubricant receiving fittings or nipples
IPC: F16N21/02
Filed: 1938-12-21
Abstract: 505,351. Lubricant-receiving nipples; venting. TECALEMIT, Ltd. Dec. 21, 1938, No. 37198. Convention date, Dec. 24, 1937. [Class 12 (iii)] [Also in Group XVII] A lubricant - receiving nipple 7 has a lubricant-transmitting member 27 projecting below the lower end 31 of the nipple. Around the member 27 is an annular passage 21 communicating with a hole 23 leading to the outside so that as the compartment 1 to which the nipple is fitted is filled with lubricant air escapes through the passages 21, 23. The member 27 may have an enlarged head 25 force-fitted within the nipple. The invention may be applied to nipples having a disc type check valve, and to nipples having a transversely extending pin for connection to a grease gun.
Patent GB-433511-A (GB)
Title: Improvements in or relating to fasteners
IPC: D06F93/00
Filed: 1934-12-28
Abstract: 433,511. Clip fasteners. SCHAFER, F., 2, Dufourstrasse, St. Gallen, Switzerland. Dec. 28, 1934, No. 37218. Convention date, Jan. 16. [Class 44] An inelastic bendable metal clip for textiles &c. comprises a lower limb a carrying a lug &c. e which bites into the material, an upper limb b adapted to be bent about the point d to grip the material, and an intermediate inclined limb c, which may be curved. The limbs f, a, c may have a reinforcing rib.