baber/WOPTO huggingface dataset:
Patent GB-1065266-A (GB)
Title: Servo systems
Inventor: CORPS REGINALD JOHN
IPC: G05D3/14
Filed: 1963-10-22
Abstract: 1,065,266. Automatic control. MINISTER OF AVIATION. Oct. 22, 1964 [Oct. 22, 1963], No. 41684/63. Heading G3R. A predetermined deviation of a control signal from a datum value in one sense or the other causes operation of one or other of two oscillators each of which, when operative, causes operation of control means in a corresponding sense through separate controlled rectifiers. In Fig. 1, an electrical error signal derived at A in a closedloop servo system, is applied to two static control devices 3, 4 one or other of which is caused according to the polarity of the error signal when that signal exceeds a predetermined magnitude, to render one or other of two full-wave thyristor rectifier circuits 5, 6 or 7, 8 operative. As a result, a servomotor 2 runs in the appropriate direction to eliminate the error. Feedback is applied through a resistor 10. A sawtooth voltage may be added to the error voltage to produce proportional control. In a more detailed arrangement (not shown) for controlling a double iris diaphragm on a camera, light from the scene passes through the auxiliary diaphragm to a photoconductive cell variations in the resistance of which produce error signals which control transistor blocking oscillators. The transistors are of opposite types so that one or other is caused to oscillate when the error signals exceed different magnitudes in each sense. A corresponding thyristor rectifier is then rendered effective by the oscillator to run a servomotor in the appropriate direction to restore the light passing to the photo-cell to the desired value by adjusting the auxiliary iris diaphragm. The main iris diaphragm for the camera lens is adjusted simultaneously by the servomotor so that the light passing to the film is maintained constant also. A temperature variable resistor for temperature compensation and Zener diodes for voltage stabilization are provided. Use of half-wave rectification or thyratrons instead of thyristors is referred to.
Patent GB-1189990-A (GB)
Title: Substituted 6-(1-Aminocycloalkylcarboxamido)-Penicillanic Acids
IPC: C07D499/00
Filed: 1967-09-13
Abstract: 1,189,990. Penicillins. AMERICAN HOME PRODUCTS CORP. 13 Sept., 1967 [27 Sept., 1966], No. 41729/67. Heading C2A. The invention relates to a substituted 6- (1 -amino-cyclopentanecarboxamido) penicillanic acid of Formula I or a pharmaceutically acceptable salt thereof; wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are each H, C 1-6  alkyl, halo, NO 2  or sulpho; with the proviso (a) that one or two of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are always other than H; and (b) that, when any one of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> is alkyl with the remainder H, the alkyl contains 2 to 6 carbon atoms. The penicillins are prepared by reacting an N-carboxy anhydride of formula wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> have the above meanings, with 6-aminopenicillanic acid. The reaction is carried out in a mixture of methylene chloride and triethylamine. A typical penicillin is 6 - (1 - amino - 2 - chloro - 3 - methyl - cyclopentanecarboxamido) - penicillanic acid. A pharmaceutical composition for administration to humans and animals comprises a penicillin of Formula I, or a salt thereof, and a carrier. The penicillins may also be used as nutritional supplements in animal feeds.
Patent GB-1507839-A (GB)
Title: Valve apparatus
IPC: F24C3/14
Filed: 1975-10-17
Abstract: 1507839 Portable stoves; burners; gas discharge devices DUDLEY HILL ENG CO Ltd [trading as LYTHAM LEISURE PRODUCTS] 17 Oct 1975 [22 Oct 1974] 41743/75 Headings F4W F4T and F4P The subject-matter of this Specification is substantially the same as that described in Specification 1,507,838, but the claims are concerned with a valve apparatus for association with a frame 16 adapted to embrace a liquefied gas canister 12, the apparatus comprising a valve 13 having a piercing tube 21 for piercing the canister, and a valve 14 separable from the valve 13 and including a manually operable valve member 26, the valve 13 being selfclosing upon separation of the valve 14 therefrom. A spring pawl 13a carried by the valve 13 co-operates with projections 16a carried by the frame 16 to prevent unwanted unscrewing of the valve 13 from the frame 16.
Patent GB-1237447-A (GB)
Title: Means for launching, towing and recovering a body behind a vessel
Inventor: HALE NEVILLE EDWARD
IPC: B63G8/42
Filed: 1968-09-03
Abstract: 1,237,447. Towing submerged bodies. FATHOM OCEANOLOGY Ltd. 3 Sept., 1969 [3 Sept., 1968], No. 41748/68. Heading B7V. [Also in Division B8] Apparatus for launching, towing and recovering a submersible body 6, e.g. a sonar device, comprises a winch 3 mounted in frame 1 on the towing vessel 2, an hydraulically-controlled sheave 25 for maintaining the towing cable tension constant, and a cradle 4 pivoted about the axle 17 of an outboard sheave 15. Cradle 4 comprises frames 16 on either side of sheave 15, a roller 21 on each frame engaging body 6, and a roller 23 between the frames 16 engaging the towing cable. When towing, cable 7 is paid out from winch 3, cradle 4 with body 6 pivots downwardly from its stowed position 34 into its launching position36and sheave25 pivots from its stowed position 35 into its operational position. As further cable is paid out, body 6 submerges and falls astern, roller 23 being held in engagement with the cable by the action of springs 18 pivoting cradle 4 upwardly. During towing, rollers 21 and plates 37 restrict lateral movement of the cable. Sheave 25 is carried by pivoted arms 27 controlled by cylinders 30 connected to accumulators 32, the pivots being arranged such that the mechanical advantage decreases as arms 27 pivot anti-clockwise, to compensate for increase in pressure in the cylinders. Sheave 25 is free to move laterally on its shaft 26 to align with the cable windings on the winch drum. When the cable is winched in, body 6 engages the cradle 4, sheave 25 is moved to position 35 by the increase in cable tension, and cradle 4 is pulled by the cable into its stowed position 34. Winch 3 is driven by an hydraulic or electric motor with an automatic brake.
Patent GB-1134145-A (GB)
Title: Spinning apparatus for the manufacture of filaments and fibres
IPC: D01D5/092
Filed: 1967-09-13
Abstract: 1,134,145. Melt spinning filaments. ALLIED CHEMICAL CORP. 13 Sept., 1967 [13 Sept., 1966], No. 41858/67. Heading B5B. An apparatus for melt spinning filaments such as polycaproamide, comprises a vertical spinning chamber 1 defined by a cylindrical wall 2, closed at the top by a horizontal spinneret 4 having a multiplicity of orifices 6. Aspiration means, at the upper end of the spinning chamber, comprises a plenum 8, surrounding the chamber 1, and provided with an exhaust port 10 which is connected to a suction device (not shown) for withdrawing gas. A horizontal ring of channels 14 is formed in the inner wall of the plenum and provides communication with the spinning chamber 1. A conical baffle 16 having a vertically extending annular lip 18 is spaced from the bottom of the spinneret. A cylindrical bellows construction 26 to which cooling gas may be admitted through a manifold 24, surrounds the lower portion of the spinning chamber 1. Cooling gas flows upwardly between the chamber 1 and the bellows arrangement 26 and flows into the chamber 1 through inlet ports 22 in the chamber wall. The bellows 26 is secured to an inwardly extending flange 29 of channel section at the bottom of the cylindrical wall 2, the flange 29 also supporting the lower parts of the spinning chamber which includes the inlet ports 22. An annular flange 30 depending from the plenum 8 supports the plenum and dips into a channel 34 formed on an annular block 36 mounted in the cylindrical wall 2, the channel containing a liquid sealant such as molten Wood's metal. Tlie annular block 36 supports a horizontal ring 40 containing a plurality of bolts 41 which are urged upwardly by springs 36 engaging between the ring 40 and the heads 43 of the bolts. A plate 19 secured to the baffle 16 rests on bolt heads 43 and is urged upwardly thereby, and is itself provided with a downwardly projecting skirt 42 which dips into a liquid sealant such as molten Wood's metal. Thus the plenum and baffle can be readily removed for maintenance simply by lifting. If desired O-rings or other gaskets may be used in place of the liquid sealant. In operation a cooling gas enters the spinning chamber through inlet ports 22 and the major part of the cooling gas passes co-current with the freshly spun filaments and exits through a gas outlet (not shown). A minor portion of the cooling gas flows counter-current to the filaments and passes up through the baffle 16, between the baffle and the lip 18, and then passes down on the outside of the baffle element 16, through channels 14 into plenum 8, and is withdrawn through the exhaust port 10, this minor flow of cooling gas carrying with it volatilized monomer given off by the freshly extruded filaments in the upper region of the spinning chamber.
Patent GB-1411101-A (GB)
Title: Oil-and-water repellent composition
IPC: C08F220/38
Filed: 1972-09-08
Abstract: 1411101 Fluorine-containing copolymers ASAHI GLASS CO Ltd 8 Sept 1972 41915/72 Heading C3P [Also in Division D1] Oil- and water-repellent compositions coinprise a copolymer containing at least 25 weight per cent of units derived from a fluoroalkyl group-containing monomer and 0.2 to 20 weight per cent of units derived from diacetone acrylamide, diacetone methacrylamide or a methylol or alkoxymethylene derivative thereof. The fluorine-containing monomer may be a C 3-15  fluoroalkyl acrylate or methacrylate, and the copolymers may contain other monomer units, e.g. derived from ethylene, vinyl fluoride, vinylidene halides, acrylic and methacrylic acids, esters, amides and nitriles, styrene, conjugated dienes, maleic anhydride, vinyl alkyl ethers and vinyl alkyl ketones, and particularly vinyl chloride. The copolymers may be applied to fabrics, glass, paper, wood, leather, asbestos, cement, ceramics, metals, metal oxides and plaster, from solution or aqueous emulsion. Many examples are given describing copolymers of fluoroalkyl acrylates and methacrylates with diacetone acrylamide and vinyl chloride, diacetone methacrylamide and vinyl chloride, and methylol diacetone acrylamide and vinyl chloride, ethyl acrylate, butyl methacrylate 2-ethylhexyl methacrylate or styrene; copolymers of fluoroalkyl acrylates with diacetone acrylamide; copolymers of chloroprene and diacetone acrylamide; and copolymers of diacetone acrylamide, vinyl chloride and chlorethyl vinyl ether.
Patent GB-1059808-A (GB)
Title: Apparatus and method of making magnetic material
IPC: B03C1/10
Filed: 1965-10-04
Abstract: 1,059,808. Magnetic separators. INDIANA GENERAL CORPORATION. Oct. 4, 1965 [Nov. 16, 1964], No. 41945/65. Heading B2J. Ceramic magnetic particles are obtained by supplying a slurry 32 of ferrite crystals and water to the underside of a nip region 30 between a pair of magnetic rollers 12, 13, conveying the magnetic particles through the nip region by means of conveyor belts 20, 21 while magnetically attracted by the rollers to squeeze water from the magnetic particles and to magnetically orientate the ferrite crystals while passing through the nip region to form ceramic magnetic particles, and applying heat as at 36, 41 to the particles for removing further water therefrom. Alternatively, one of the magnetic rollers may be replaced by a non-magnetic roller or by a demagnetized ferrous roller. The roller 13 is driven by the belt 21 which passes around a roller 17 which has an extended shaft portion on which is secured a pulley 25 driven via a belt 26 and pulley 24 from a motor 23. The roller 12 and belt 20 assembly is driven by frictional engagement with the roller 13 and belt 21 assembly, the belt 20 passing around an idler roller 16. The rollers 12, 16 and the rollers 13, 17 are mounted between supports 45, 46 and 47, 48 respectively, Fig. 2 (not shown). The end shaft portions of the rollers 16 and 17 are received in bearings, e.g. 64, 65, which are movable to adjust the tightness of the belts 20, 21 by means of adjusting nuts, e.g. 72, 82, engaging with threaded shafts, e.g. 70, 79. The rollers 12, 13 are each formed of annular permanent magnet discs 95 which alternate with annular steel pole piece discs 96 on a shaft 97 and held in place by end plates 100, 101. The magnets 95 may be of lesser diameter than the pole pieces providing recesses 102 which may be filled with non-magnetic material such as epoxy resin. The magnets alternate in polarity along the shaft and each magnetic pole piece of one roller at the nip region 30 is opposed by a pole piece of opposite polarity of the other roller. Instead of the drive arrangement shown in Fig. 1, the rollers 12, 13 may be mechanically synchronized by rotating them from a motor 110, Fig. 2 (not shown), through a synchronized gear train 111.
Patent GB-952671-A (GB)
Title: Improvements in plastisol composition for coating ferrous metal products
Inventor: YASHIRO RYUICHI
IPC: C09D127/06
Filed: 1961-11-27
Abstract: A plastisol composition for use as a protective coating on ferrous metal products comprises 100 parts by weight of polyvinyl chloride in the form of a polyvinyl chloride sol and 0.5 to 50 parts by weight of an orthoplumbate of calcium, strontium or barium. 5 to 150 parts by weight of an epoxide compound of an organic acid may be added as plasticizer to the above composition. In addition 1.0 to 200 parts by weight of an organic acid anhydride may be added to the composition obtained by mixing the above three constituents. The orthoplumbate stabilizers for the polyvinyl chloride sol are obtained by heating to 700 DEG C. or more an alkaline earth metal oxide and lead oxide. The epoxy compounds mentioned are butyl epoxy stearate, 3, 4-epoxy cyclohexyl methyl ester, 9, 10-epoxy-iso-octyl-stearate, or cyclohexyl methyl-3, 4-epoxy-6-methyl cyclohexane carboxylate, epoxylated soybean oil and 9, 10, 12, 13 diepoxy stearate. The organic anhydrides mentioned are methyl nadic acid anhydride, pyromellitic dianhydride, dodecenyl succinic anhydride and chlorendic anhydride.  The polyvinyl chloride sols are usually obtained by heating polyvinyl chloride paste resin of grain size about 1.5m  with a plasticizer e.g. a phthalate ester type plasticizer. The plastisol composition may be used to coat ferrous products such as the high-tension members of electrical transmission lines, or the steel tape or wire used for the protection of telephone and power cables, or wire screens.ALSO:Ferrous products such as the high-tension members of electrical transmission lines, or the steel tape or steel or iron wires used for the protection of telephone and power cables, or wire screens or iron plates, may be coated with a plastisol composition obtained by adding to 100 parts by weight of polyvinyl chloride in the form of polyvinyl chloride sol, 0,5-50 parts by weight of an orthoplumbate of calcium, strontium or barium.  In addition the plastisol composition may contain 5-150 parts by weight of epoxide compounds of organic acids and furthermore if such epoxide compounds are present, 1,0-200 parts by weight of an organic acid anhydride may be added.
Patent GB-1127612-A (GB)
Title: Electronic flashgun for photographic purposes
IPC: G03B15/05
Filed: 1965-10-07
Abstract: 1,127,612. Electronic flashgun. LOEWE OPTA A. G. Oct. 7, 1965 [Oct. 9, 1964], No. 42570/ 65. Heading G2A. An electronic flashgun comprises lower and upper parts 1 and 2 joined by a rigid member 3, which engage respectively the bottom, top and back of a camera 18 attached thereto. The lower part 1 may contain a battery 9, storage capacitor 10 and transformer 11, and have a guideway 17 in which is secured a screw (26) for screwing into the tripod thread (27) of the camera. The upper part 2 may contain a discharge lamp 5, reflector 4 and printed circuit 7, and have a foot 15 with a flash contact 16, for sliding in the camera accessory shoe (28). Member 3 may have leaf springs which engage the camera or may be used as an interchangeable camera back (20); it may also support or contain electric leads 12 and 13 for connecting the parts 1 and 2.
Patent GB-1195636-A (GB)
Title: Gas Discharge Display Device
IPC: H01J11/12
Filed: 1968-09-10
Abstract: 1,195,636. Television displays. CONTROL DATA CORP. 10 Sept., 1968 [11 Sept., 1967], No. 42910/68. Heading H4F. [Also in Divisions G5 and H1] A matrix of individual gaseous discharge cells 16 actuated by a selection matrix of crossing electrodes 12, to form a visual display, is characterized in that there is no direct electrical contact between the electrodes 12 and the gas in the cell. Thus an ignited cell is prevented from inhibiting firing of another cell on the same drive electrode. As described, holes 16 in a glass plate 14 are filled with a 95: 5 Ne/He, mixture. Plate 14 is sandwiched between thin glass plates 18 (which act as dielectrics), and the latter are bonded to supporting glass plates 10 by an epoxy resin. X and Y electrodes 12 are deposited on plates 10; they may be thin films of gold; or of tin oxide 12A reverse-etched to the desired pattern and covered by a thicker layer of beryllium copper having light-transmitting holes 50, 52, Fig. 4. Cell ignition reliability is promoted by means of a thermionic or other electrode (60) passing through the cells (Fig. 6, not shown); or by including a photo-emissive substance (e.g. sodium) in the glass of plate 14 and subjecting the entire display to backlighting from a filtered nitrogen lamp source (90), Fig. 7 (not shown).
Patent GB-1099613-A (GB)
Title: Improvements relating to colour television systems
IPC: H04N9/66
Filed: 1965-10-11
Abstract: 1,099,613. Colour television receivers. INTERNATIONAL POLAROID CORPORATION. Oct. 11, 1965 [Oct. 15, 1964], No. 42997/65. Heading H4F. The invention relates to a receiver for receiving a signal of the N.T.S.C. type and arranged to operate in accordance with the red-white principle of colour reproduction (see Specification 985,622). In accordance with the invention the receiver includes a cathode-ray tube having a screen formed of two elements which respectively produce red and cyan (i.e. minus red) light, a single synchronous demodulator for demodulating the chrominance component of the N.T.S.C. signal and means for combining the output of the demodulator with the luminance component of the signal whereby the screen elements are excited by a first combination of chrominance and luminance signals predominantly related to the red content of the image to determine the amount of red light emitted, and by a second combination of chrominance and luminance signals predominantly related to the green content of the image to determine the amount of red plus cyan (i.e. white) light emitted. Fig. 3 illustrates four possible ways of carrying out the invention. In (a), (b) and (c) the synchronous demodulator operates at the fixed phase indicated (i.e. 90, 103À5 and 236À8 8 degrees) and the output is combined with the luminance signal (either in a matrix circuit or at the grid and cathode of the image reproducer) in accordance with the matrix values shown to obtain two signals eg and e r . In (a), e r  has the ideal value R, but e g  is distorted by a small blue component. Operation as at (b) is similar, but here e r  is distorted by a small blue component. Operation as at (c) causes each component to be distorted. The signals e r  and eg are utilized to control image production in red and white light alternately by a switch which is operated at field rate. In the method shown at (d), the switch is dispensed with and instead the synchronous demodulator is operated in alternate fields at the angles 90 and 236À8 degrees so as to derive alternately R-Y and G-Y. A switched attenuator adjusts the signal amplitude in accordance with the values indicated before combination with the luminance signal at the grid and cathode of the image reproducer. Detailed receivers based on the methods described with reference to (a) and (d) are described with reference to Figs. 4 and 6 (not shown). The receivers utilize the one-gun cathode-ray tube described in Specification 1,072,707 which has a screen formed of superposed red and cyan phosphor layers and in which the colour of the reproduced light is switched between red and white by changing the target voltage whereby the electron beam is caused to penetrate and excite either one or both phosphor layers. Registration of alternate fields is maintained by changing a mesh voltage as described in Specification 1,072,709.
Patent GB-924572-A (GB)
Title: A process for purifying n-dialkylated acid amides
IPC: C07C233/00
Filed: 1960-12-15
Abstract: N-Dialkylated acid amides or N-alkyl-N-b -cyanoalkyl acid amides which have been contaminated by being used as solvents in a spinning process are purified by passing in admixture with at least 10% of water either over a strongly acid ion exchanger in the H-ion form and then over a strongly basic ion exchanger in the carbonate ion form or, alternatively, over a mixture of the above two ion exchangers and thereafter in both cases freeing the acid amides from water by fractional distillation.  Specified N-dialkylated amides are dimethyl formamide, dimethyl cetamide, dimethyl methoxyacetamide and N-methyl-N-b -cyanoethyl formamide. It is preferred to use 30-35% water in the mixture.  The preferred acid ion exchanger is the sulphonation product of a cross-linked polystyrene and the preferred base ion exchanger is a quaternary ammonium compound of a cross-linked polystyrene.
Patent GB-1039312-A (GB)
Title: Improvements in or relating to endless belt conveyors
Inventor: SWAFFER DOUGLAS CHARLES
IPC: A01K31/04
Filed: 1963-11-01
Abstract: 1,039,312. Endless conveyers. APEX POULTRY SYSTEMS Ltd. Oct. 12, 1964 [Nov. ], 1963], No. 43294/63. Heading B8A. To obviate lateral wandering in an endless belt conveyer a driven and possibly an idler roller and/or the contacting surface of the belt is or are provided with ribs spaced apart across the width of the roller and/or belt. As shown in Figs. 2, 4, 6, a wooden roller 29 mounted on a steel shaft 8 is encircled by an externally ribbed sheet 30 formed from rubber or rubber-like plastics attached thereto by adhesive, screws, tacks, nails or staples. The ribbed sheeting 30 may be provided with ribs on both its inner and outer surfaces. Fig. 2 shows the roller in conjunction with an endless belt 33 having plain inner and outer surfaces, while Fig. 4 shows an endless belt with a plain outer surface 40 and ribs 41 on its inner surface engaging the ribs 34 of the sheeting 30 on the roller 29. The ribs may have rounded crests.
Patent GB-897806-A (GB)
Title: Improvements in wheeled hatch covers
IPC: B63B19/203
Filed: 1960-12-19
Abstract: 897,806. Hatch covers. TELL TRADING CO. A. B. VON. Dec. 19, 1960 [Feb. 6, 1960], No. 43536/60. Class 113. A hatch cover of the type comprising a plurality of sections hinged together with an end section hinged to the coaming where they are stowed, and which are moved to the hatch opening and closing on rollers which are disposed on the sections 4 and 5 and on any subsequent sections fitted along the hatchway away from the coaming hinge, by a pulling cable, has the peripheral seal 29 put into and out of engagement with the coaming flange 30 when the rollers 18, 19, 20 drop into or roll out of the notches 31, 32 and 33 in the coaming flange 30. In order to prevent the rollers from braking the movement of the sections along the coaming by engagement with the notches in their path each notch is of progressively larger dimension 34, 35 the farther it is from the coaming hinge and glide shoes 21, 22 are provided and spaced at a distance from its associated roller to prevent that roller from dropping into notches which are in its path of movement.