baber/WOPTO huggingface dataset:
Patent GB-1451319-A (GB)
Title: Control circuits for battery chargers
IPC: H02J7/00
Filed: 1973-09-22
Abstract: 1451319 Battery charging circuits WESTINGHOUSE BRAKE & SIGNAL CO Ltd 23 Sept 1974 [22 Sept 1973] 44545/73 Addition to 1438290 Heading H2H A battery charging control circuit as claimed in the parent Specification is modified by providing means responsive to the first registration of a battery voltage of the same magnitude as a previous registration of the battery voltage to control the charging current thereafter supplied to supply a charge equal to a fraction of the battery charge capacity and then terminate the charge. A counter CSC counts clock pulses provided by a generator PUT until a six minute period has elasped whereupon a monostable MS enables a relay driver RD to energize a relay RL thereby closing the relay contact RL/1 and supplying the volts/cell Vc of the battery to a capacitor C. If this voltage, as compared with that registered previously, has increased by an amount sufficient to cause an amplifier AMP to generate a reset pulse for the counter, a further six minute period commences during which charging current is again supplied to the battery. However, if the reset pulse is not provided, i.e. if the battery voltage registrations at the end of successive six minute intervals are of equal magnitude, the counter provides a signal to switch on a transistor 300 thereby connecting capacitors 104, 105 in parallel so that the generator PUT supplies clock pulses at half the frequency. A twelve minute battery charging interval therefore commences during which a charge of between 3 and 5% of the battery charge capacity is supplied. At the end of the twelve minute interval the counter provides an output to switch off the charge current.
Patent GB-1199437-A (GB)
Title: Power Transistor
IPC: H01L29/10
Filed: 1967-09-29
Abstract: 1,199,437. Semi-conductor devices. SIEMENS A.G. 29 Sept., 1967 [10 Nov., 1966], No. 44591/67. Heading H1K. In a power transistor having a base zone 1 adjoined by at least one emitter zone 2 and at least one base contact zone 3 both of which are highly doped relative to the base zone and have metallic contacts 4, 5 thereon, the width d B  of the base contact zone is not more than one third, and is preferably between one quarter and one twelth, of the width d E  of the emitter zone. The widths are related by the equation where w is the thickness of the base zone 1 between the zones 2 and 3 and the collector zone 6 and l is the carrier diffusion length L multiplied by for an NPN transistor and by for a PNP transistor, Á p  and (Á n  being the mobilities of the holes and electrons respectively. The emitter and base contact zones may be of interdigitated or concentric annular form.
Patent GB-1125785-A (GB)
Title: Machine for the production of bulked yarns
IPC: D02G1/20
Filed: 1965-10-22
Abstract: 1,125,785. Bulking yarn. C. D. ANTONI and G. MASCI. 22 Oct., 1965 [5 Nov., 1964; 12 Jan., 1965]. No. 44787/65. Headings DID and D1F. A machine for producing bulked yarns has a number of units each comprising a real twist device e.g. a twofor-one twister 3, 4, a first draw roller device 8, 9, a tubular heater 10, a second draw roller device 17 and a winding device 17, 20 serving to wind the twisted and bulked yarn on a bobbin 20. A stream of gas, air or steam may be introduced into the heater via a pipe 22. Double twist device 3, 4 may be replaced by a single twist spindle. The arrangement is such that no contact occurs between yarn and heater.
Patent GB-1031704-A (GB)
Title: Oxymethylene polymers
Inventor: SMALL PERCY ARTHUR
IPC: C08G2/00
Filed: 1961-12-14
Abstract: A copolymer comprises the product of polymerizing a cyclic oligomer of formaldehyde with coumarone, indene, thianaphthene and thianaphthene dioxide.  The copolymers preferably contain more than 80% molar of oxymethylene units and may be prepared by polymerization in the presence of an electrophilic catalyst, e.g. a Lewis acid such as boron trifluoride or a complex thereof iodine, perchloric acid or acetyl perchlorate, and not more than a very small amount of water. The polymerization may take place in bulk or solution in the presence of chain transfer agents and under conditions of shear.  The product may be heated in the presence of acid or base to remove terminal groups which may then be end-capped, e.g. by treatment with a carboxylic acid anhydride.
Patent GB-1444499-A (GB)
Title: Obturator for the rotor of a rotating machine which conveys a noxious fluid
IPC: F16J15/00
Filed: 1974-10-16
Abstract: 1444499 Seals SOC NATIONALE D'- ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION 16 Oct 1974 [19 Oct 1973] 44844/74 Heading F2B A casing 3, e.g. of a compressor, is sealed, e.g. to allow disconnection of the drive motor coupling, by magnetically clamping seal ring 4 between knife-edge element 6 formed on the hub 1 of the compressor rotor shaft 2 and element 9 sealed to casing 3. Permanent magnets (15, 16, Figs. 5 and 6, not shown) mounted in support 5, are normally of opposing polarity. On applying a pulse through line 12 to energizing coils (17, 18) the polarity of one magnet is reversed, so that gap (J 0 ) is closed by magnetic attraction and the seal ring 4 is clamped, under the pressure of springs 20. Springs 20 may be replaced by a spring washer (9, Fig. 1, not shown). The separation of contacts 5a and 14 provides a remote indication that the ring is clamped.
Patent GB-1313315-A (GB)
Title: Printing on flexible recording media
IPC: B41J2/32
Filed: 1970-09-21
Abstract: 1313315 Electrographic printing apparatus HONEYWELL Inc 21 Sept 1970 [29 Dec 1969] 44898/70 Heading G2H An electrographic printing apparatus comprises a continuous sheet of flexible recording medium 16 composed of conductive paper with a dielectric coating, an electrostatic imaging means consisting of an image roll 24 and an electrode 26 biased against the conductive paper, a developing station 34 consisting of a pump 36 and fan nozzle 42 for spreading developing liquid laterally over an inclined steel plate 44 so as to form a meniscus between the sheet 16 and the plate 44, a longitudinally notched rod 50 as wiper and a drying station consisting of a roll 74, an absorption roll 76. A roll 78 applies cleaning fluid to the absorption roll.
Patent GB-1522005-A (GB)
Title: Signal detection means
IPC: G01D3/00
Filed: 1975-10-30
Abstract: 1522005 Pulse discriminating ASEA AB 30 Oct 1975 [23 Dec 1974] 44930/75 Heading H3T Large amplitude pulses arriving directly from a source are distinguished from smaller amplitude reflected pulses by means of a signal variable threshold circuit. Peak detector A responds to the peaks of the largest pulses and attenuator 13 sets a threshold slightly less than this so that smaller amplitude pulses produce no output from comparator C.
Patent GB-1484967-A (GB)
Title: Rotor of an electrical machine
IPC: H02K1/30
Filed: 1975-10-30
Abstract: 1484967 Core constructions BBC BROWN BOVERI & CO Ltd 30 Oct 1975 [19 Nov 1974] 45010/75 Heading H2A An electric machine rotor comprises coaxial inner and outer members 1, 3 interconnected by spokes 4 which are evenly spaced apart round the rotor circumference and tangent to an imaginary cylinder 7 within and coaxial with the inner member 1, the axes of every two neighbouring spokes intersecting within the inner member 1 and all the spokes being inflexible in their respective longitudinal directions. The spokes permit relative angular movement of members 1, 3 in response to stresses occurring during operation. The spokes may be connected to members 1, 3 by hinged joints 5. The outer member 3 may be made up of arcuate laminations. Alternatively, the outer member may comprise laminated salient poles 10, Fig. 4 (not shown), joined together by hinges (9).
Patent GB-1406863-A (GB)
Title: Photographic silver halide products and processing composition
IPC: G03C8/36
Filed: 1972-10-03
Abstract: 1406863 Photographic processing composition containing a cation exchange resin POLAROID CORP 3 Oct 1972 [4 Oct 1971] 45589/72 Heading G2C A photographic aqueous alkaline processing composition comprises at least one organic light absorbing material and a photographically innocuous inorganic cation exchange resin e.g. an aluminosilicate polymer which may be a natural clay of the montmorillonite family or a synthetic clay such as magnesium aluminium silicate. The resin may be a white or substantially colourless clay having a particle size distribution which is submicron. The organic light absorbing material may be a phthalein dye having its pKa below the pH of the composition. The composition may contain a viscosity increasing agent e.g. carboxymethyl- or hydroxyethyl-cellulose, a light-reflecting agent e.g. titanium dioxide and an onium compound e.g. N-phenethyl- α - picolinium bromide. The composition may form part of a film unit comprising at least one silver halide layer, preferably associated with a dye image-forming material, and an image-receiving layer. Streaking of the image produced, believed to be caused by a phase separation of the processing composition, is reduced if not totally avoided by using the inorganic cation exchange resin.
Patent GB-1145311-A (GB)
Title: Attachment for a tubular fabric cutting machine
IPC: B26D7/26
Filed: 1966-10-13
Abstract: 1,145,311. Cutting tubular fabric; slitting apparatus. S. G. ANDERSSON. 13 Oct., 1966 [13 Oct., 1965], No. 45738/66. Heading B4B. [Also in Division B6] A machine having cards 2 for feeding a tubular fabric to a motor-driven disc 3 for cutting the fabric along a helical line into a continuous strip 7 comprises an attachment having cutting discs 8 for dividing the strip 7 into strips 26, setting means for individually adjusting the discs 8, and a backing roller 11 co-operating with the discs 8 and driving the latter through their cutting edges, the roller 11 being driven from the drive motor of the disc 3. The setting means comprises screws 19, 20 in threaded engagement with brackets (13), Fig. 4 (not shown), for the upper and lower discs 8 respectively, the screws each being secured against axial displacement by a screw (22), Fig. 3 (not shown), and each having an end projecting from a sleeve (14) and provided with a socket for a crank (23), Fig. 4 (not shown). The discs 8 are biased against the roller 11 by spring means (10), Fig. 3 (not shown), and are each movable out of contact with the roller 11 by means of a device 29 and a roller 30. The strips 26 are coiled on a roller 25 journalled in the free end of a swivel arm 27 pivoted to an end frame 6 and rotated by a feed roller 28. The rollers 11, 28 are driven from a pulley 34 on the shaft 4 carrying the cutter 3 by means of belts 36, 38 passing round pulleys 35, 37 respectively. A microswitch 39 and a strip sensing element stop the feed of the strip 7 in the event of irregularities in the strip or of defects in the fabric.
Patent GB-1141875-A (GB)
Title: Rising main systems
Inventor: MANTEL ARTHUR
IPC: H02G3/10
Filed: 1966-10-13
Abstract: 1,141,875. Distribution arrangements. MANTEL METALWORKERS Ltd. 25 Sept., 1967 [13 Oct., 1966], No. 45894/66. Heading H2E. In a mains distribution system (Fig. 1, not shown) phase and neutral cables (2) are connected in distribution boxes (3) to lateral cables (4) feeding circuits in building units, e.g. flats, on floors (1) of a building. The cables (2) are displaced laterally into the box 3, Fig. 2, with split plastics bushes (Fig. 5, not shown) engaged in aligned semicircular cut outs (18) in removable end closure plates (8, 9, Figs. 3a, 3b, not shown) which slidably engage wall portions 11, 12 in the top and bottom of the box, which is completed by a further closure plate (10, Fig. 3c, not shown) engaging the trailing edge of plate (9). An earth conductor (not shown) rests in notches 6 and 7 and is clamped to earth terminal blocks 19. A brass bus-bar (25, Fig. 6, not shown) carries a bank of fuses, ends of the bank being secured to opposed lugs 23. A clamp (28, Fig. 6, not shown) secured to a bared portion (27) of a cable (2) connects the cable to the fuses via the bus-bar . Holes 20, 21, 22 allow the entry of lateral cables (4) or lateral cable conduits. An adaptor box for a plurality of lateral cables may be bolted to the distribution box. The main cables (2) may be insulated copper or aluminium or metal clad, mineral insulated copper or aluminium.
Patent GB-1408930-A (GB)
Title: Opto-electronic semiconductor devices
IPC: H01L31/167
Filed: 1972-10-05
Abstract: 1408930 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 Oct 1972 [8 Oct 1971] 45898/72 Heading H1K An optoelectronic device consists of a lightemitting semi-conductor device, e.g. a gallium arsenide PN diode optically linked to a photosensitive semi-conductor device, e.g. silicon phototransistor, the diode and transistor being soldered to the side faces of flat metal strips cut from combs comprising a repetitive pattern of such strips. As shown, Fig. 1, the transistor 2 is soldered via its collector zone to strip 5a with wires connecting its base and emitter to strips 5b, 5c while the diode has one zone soldered to strip 3a and the other connected by a wire to lead 3b, both devices being surrounded by a transparent synthetic resin 8 within an opaque epoxy resin moulding 9. The width of the device bodies may equal the thickness of the strips thereby facilitating their alignment and correct spacing during manufacture.
Patent GB-1105639-A (GB)
Title: Electrical circuits for use in display systems employing cathode ray tubes
IPC: G09G1/00
Filed: 1966-10-14
Abstract: 1,105,639. Cathode-ray tube Circuit. INTERNATIONAL BUSINESS MACHINES CORPORATION. 14 Oct., 1966 [28 Oct., 1965], No. 45982/66. Heading H4T. The beam intensity of a cathode-ray display tube is controlled in accordance with deflection velocity by combining with the beam intensity control signal, which is fed via amplifier 20 and developed across resistor 17, a correction voltage derived via diodes D1 . . . D4 from the largest of the voltages (of negative polarity in this case) induced in the X, Y deflection windings by the deflection waveforms such correction voltage also being developed across resistor 17 to provide a corrected voltage across resistor 18 for beam intensity control. The invention is described in connection with a computer controlled image display system in which digital signals defining the positions to which the beam is to be moved are converted to step currents and applied directly to the deflection coils, the inductance of which causes the velocity of beam movement to be non-linear so that the trace is non-uniformly illuminated.
Patent GB-1367883-A (GB)
Title: Electrochemical cells of the packed bed type
IPC: C25B9/16
Filed: 1970-09-28
Abstract: 1367883 Packed bed cell NATIONAL RESEARCH DEVELOPMENT CORP 15 Sept 1971 [28 Sept 1970] 45999/70 Heading C7B An electro-chemical cell comprises a packed bed of conducting particles which form a plurality of isolated bi-polar cells. The conducting particles 10 may be graphite beads or glass beads coated with conducting material. Non-conducting particles 11 such as glass beads may be interposed between the conducting particles. In Fig. 1 where only a few beads are shown, the beads are supported on a porous glass plate 14. Platinum gauge electrodes 15, 16 are connected to the supply via leads 20 and 19. Electrolyte passes into the cell via duct 17 and out via duct 18. The beads may be compressed by electrode 16. The cell is particularly suitable for the oxidation of bromide solutions.
Patent GB-1308354-A (GB)
Title: Bistable store circuits
IPC: H03K17/62
Filed: 1970-09-29
Abstract: 1308354 Bi-stable circuits; automatic exchange systems SIEMENS AG 29 Sept 1970 [30 Sept 1969] 46139/70 Headings H3T and H4K A bi-stable 31, 32 is set by a control signal from U B1  via a switch e only if two other inputs x, y, connected via respective diodes 21, 22 to the middle of a series-connected pair of resistors 11, 12 between e and the bi-stable, are not earthed as by switches X, Y. When T31 and T32, which may be reciprocally connected opposite conductivity types as shown, are conductive, an A.C. signal Q from transformer 4 is coupled through T32 to the output V. In a telephone cross-bar distributer, a matrix (Fig. 2, not shown) of the bi-stables Knxy of Fig. 1 is provided each row having a common x, e, and Q line; and each column having a common y and V line. A transistor 34 in each column provides at its emitter a bias of 2 volts to T32 emitter before T31, T32 are switched on; but when any bi-stable in a column is conductive its T32 emitter rises to + 5 volts to inhibit operation of any other bi-stable in that column. To reset (turn off) the bi-stable, a switch t in T34 emitter circuit is opened and switches X and Y operated. Indicators Vx and Vy identify a conductive x line and y line respectively and thereby identify a conductive bi-stable in the matrix.
Patent GB-1420515-A (GB)
Title: Press for squashing a lump of dough
IPC: A21C9/08
Filed: 1973-10-03
Abstract: 1420515 Moulding dough A KINBERGER 3 Oct 1973 46182/73 Heading B5A A press for moulding dough pieces, e.g. pizzas comprises a stationary heated former 12 and a movable table 3 for urging a dough piece up against the former 12. The table 3 is mounted on a shaft 4 which is moved vertically by a manually operated lever 8 acting through a rack and pinion 5, 6. The former 12 may have a frusto-conical shape and a pan 17 may be located on the table by semicircularly arranged stops 19. The former 12 may be heated by a coil 13 controlled by stepless or three-step rotary switch 15. An adjustable stop 21 for the lever 8 may be provided so that moulded dough of various thicknesses may be produced. Formers and pans of various sizes may be provided.
Patent GB-1477527-A (GB)
Title: Electrophotographic apparatus
IPC: G03G15/20
Filed: 1974-10-25
Abstract: 1477527 Electro-photographic fixing apparatus INTERNATIONAL BUSINESS MACHINES CORP 25 Oct 1974 [19 Dec 1973] 46260/74 Heading G2H An electro-photographic apparatus comprises a fusing station 8 having hot-roll fuser means and an auxiliary heating device 22. A heated roller 24 includes a heat-conducting tube 26 having infrared lamps 28 therein and a deformable outer layer 30. The auxiliary heating device 22 contacts the back of a web 6 before it reaches the fuser means. An elastically deformable back-up roller 32, adjusted by cam 34, provides the pressure against roller 24. The tube 26 may be copper or aluminium, suitable thicknesses for layer 30 and meshing pressure for certain temperatures are all given. Cleaning means for the photo-conductor comprise an erase lamp, pre-clean corona and a rotating brush.
Patent GB-1069988-A (GB)
Title: Improvements in or relating to liquid circuit thermostats
IPC: G05D23/275
Filed: 1963-11-22
Abstract: 1,069,988. Automatic temperature control systems. O. BRAUN and B. BRAUN [trading as B. BRAUN]. Nov. 22, 1963 [Nov. 24, 1962], No. 46283/63. Heading G3R. A temperature control system for a water bath comprises a multi-vibrator 42, controlling a relay 45 whose contacts control the direction of current to a semi-conductor Petier effect battery to provide alternate heating and cooling. The temperature is sensed by a mercury-glass thermometer which obscures the light from a lamp to a cadmium sulphide cell connected to terminals 35 which varies the mark-space ratio. In an alternative arrangement heating is by alternating current applied to the element. An electric heater may be additionally mounted in the bath. The thermometer arrangement may be replaced by a resistance thermometer thermistor or thermocouple. The battery may be mounted separately or on the wall of the bath with one face in contact with the water and the other cooled or heated by water or air. A centrifugal circulating pump is submerged in the bath. The bath may be alternatively heated or cooled by fluids, either through a heat exchanger or directly injected into the bath.
Patent GB-1066909-A (GB)
Title: Improvements in or relating to electrical signalling systems
Inventor: MENICOU GEORGE
IPC: H04Q3/00
Filed: 1965-11-02
Abstract: 1,066,909. Data transmission systems; automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. Nov. 2, 1965, No. 46285/65. Headings H4P and H4K. In a data transmission system the 1 and 0 bits of a character are sent as frequencies f1 and f 2  and are spaced by an interbit frequency f 0 . Preceding and following the character there is sent a signal of frequency f0 lasting for the duration of two bits. Voice frequencies are used, and communication is between the registers of two exchanges. At the transmitter, Fig. 1 (not shown), when data is to be sent a flip-flop (M1) generates an 8 m.sec. signal causing an oscillator to transmit f0. A multivibrator (MV1) now generates a clock train used to read a 4-bit character from a shift register (SR1) and to gate the data read out to the oscillator, thereby producing f1 or f2  followed by f0 as appropriate for each bit. When the register (SR1) is empty the 8 m.sec. flip-flop is again energized to produce the intercharacter frequency f0. At the receiver, Fig. 2 (not shown), frequency selective circuits direct the data to three channels. Those corresponding to f1 and f2 feed a toggle (B2) connected to the input of a shift register (SR2), and that corresponding to f0 to an integrator. If the frequency f0 lasts longer than 5 m.sec. the register content is read out and decoded. Modification.-By transmitting an extra 1 bit at the beginning of a character the need for the integrator at the receiver is removed, since when that 1 bit reaches the last stage of the register read-out is immediately effected.
Patent GB-980543-A (GB)
Title: Washing agents
IPC: C11D1/14
Filed: 1961-12-28
Abstract: A detergent composition comprises (a) a salt of the carboxylic ester containing 11-22 carbon atoms of a C10-20-sulphonated fatty acid and a monohydric alcohol, and (b) a fatty alkyl sulphate, usually having 10-20. and preferably 12-18, carbon atoms, and/or an alkylbenzene sulphonate, preferably one in which the alkyl group contains 9-15 carbon atoms and is derived from polypropylene; (a) is preferably derived from a -sulphonated C10-18-fatty acids esterified with C1-4-alcohols, and in particular may either be derived from fatty acid mixtures of which at least 50% by weight contain 12-14 carbon atoms, or from mixtures of which at least 50% contain 16 to 18 carbon atoms provided that the total number of carbon atoms present is not more than 20; esters of a -sulphonated palmitic acid are particularly favoured; (a) generally comprises 20-90%, preferably 35-70%, by weight of the total of (a) and (b).  The compositions generally also include 0-20%, preferably 1-5%, of foam stabilizers (but not more than 50% of the total of (a) and (b) such as fatty amides, alkanolamides and condensates thereof with ethylene oxide; 0-70%, preferably 10-50%, of carbonates, bicarbonates, silicates, orthophosphates and sodium sulphate; 0-70%, preferably 5-40%, pyro-, tripoly-, tetrapoly-and meta-phosphates, 0-3.5%, preferably 0-3%, sodium perborate, 0-15%, preferably 3-10%, magnesium silicate, 0.20%, preferably 0-10%, acid phosphates and polyphosphates, boric, citric, oxalic, lactic, glycolic, tartaric or sulphamic acids; and 0-2%, preferably 0.2-1.5%, polymeric carboxylates, glue, gelatin, ether carboxylic or sulphonic acids of starch or cellulose, especially carboxymethyl cellulose, or cellulose or starch sulphates. In such compositions (a) and (b) together generally form 5-75%, and preferably 10-35%, by weight. Hydrotropes, such as the toluene and xylene sulphonates, solvents such as C1-4-alcohols, tri-, tetra- and polyethylene glycols, and magnesium sulphate may also be present. Where undefined, the cations present in any of the salts mentioned may be sodium, potassium or mono-, di- or tri-ethanolamine. The composition may be produced in powder, paste or liquid form.