baber/WOPTO huggingface dataset:
Patent GB-1332360-A (GB)
Title: Data modem having phase frequency and amplitude distortion compensating means
Inventor: RAGSDALE R G
IPC: H04L5/04
Filed: 1970-10-13
Abstract: 1332360 Data transmission systems INTERNATIONAL COMMUNICATIONS CORP 13 Oct 1970 [18 Nov 1969] 48534/70 Heading H4P A demodulator for modulated multi-level data signals which are accompanied by a pilot frequency, includes means responsive to any D.C. output component of the demodulator introduced by the pilot frequency to adjust the demodulating signal to the required frequency and phase. Serial binary data for transmission is grouped into pairs which are coded using a twolevel, two-polarity code to which is added a first pilot frequency of 2400 c/s + 90 degrees for amplitude control purposes. After modulation by a 2,900 c/s signal a second pilot frequency of 2,900 + 90 degrees c/s is added. At the receiver any D.C. component of the demodulator output indicates a phase or frequency shift of the received signal by the transmission line necessitating a phase or frequency shift in the 2,900 c/s demodulating signal. In the demodulating signal control circuit of Figs. 4 and 5, capacitor 82 and amplifier 81 integrate the D.C. component of the output of the demodulator, which on reaching a position or negative threshold, set by circuits 85, 86, provides a pulse to be differentiated by capacitor 91. The ensuing positive or negative pulse, indicative of the D.C. component polarity, is temporarily stored in 125 or 126 before being clocked into store 130 or 131. A timing circuit 140 monitors the frequency at which stores 130 or 131 are successively set and supplies a "fast", "slow" or "ultra-slow" correction signal to add or subtract logic 73, 74 in the form of successive numbers of pulses which are added to or subtracted from a counter-divider 75 (Fig. 5) dividing the high frequency signal from oscillator 76 to provide the approximately 2,900 c/s demodulating signal. Simultaneously the numbers of pulses are sent to an up/down counter control 150 (shown in greater detail in Fig. 5) and therein set in a counter 180, either positively or negatively according to steering bi-stable 183 and logic 189. The count in counter 180 determines the division ratio of a counter-divider 175 receiving pulses from the counter-divider 75 and re-introducing them into counter-divider 75 via gate 185, or 186, positively or negatively, according to the state of steering bi-stable 183.
Patent GB-1069304-A (GB)
Title: Improvements in or relating to drier screening drums
Inventor: FRITZSCH KURT
IPC: F26B17/28
Filed: 1965-11-16
Abstract: 1,069,304. Sieve drum driers. TEXTILMASCHINENBAU GERA VEB. Nov. 16, 1965, No. 48638/65. Heading F4G. In a screen drum drier, the rotary drum 1 has a suction fan 3 connected to one end of the drum, the impeller of which is driven via a shaft 7 by a motor 4 mounted at least partially within the drum at the end remote from the fan for which purpose a closure member 2 of the drum end is recessed in the form of a truncated conical funnel. A second, stationary funnel 8 is mounted within the first funnel to form a cooling air guide in conjunction with a cylindrical casing 9 surrounding the motor 4. The shaft is mounted coaxially within the drum within a stationary tube 11 which carries a stationary internal cover-plate 5.
Patent GB-1279835-A (GB)
Title: Improvements in or relating to pulse generators
IPC: H04L7/033
Filed: 1969-10-06
Abstract: 1279835 Automatic phase and frequency control systems SIEMENS AG 6 Oct 1969 [4 Oct 1968] 48970/69 Heading H3A A timing pulse generator comprises a controlled oscillator OS to whose control input is supplied the sum of two variables corresponding to the phase difference between the timing pulses and input pulses applied at A and to the repetition frequency of the input pulses respectively, the second variable being produced by a control unit SEG. A controller REG producing the first variable comprises control circuits ST 1 , ST 2  generating control pulses having durations corresponding to the interval between the leading edge of a timing pulse and the leading edge of an associated input pulse and to the interval between the leading edge of a timing pulse and the trailing edge of an associated input pulse respectively and an amplifier VST producing an output dependent on the difference in length of the two control signals. As shown in Fig. 2, VST comprises transistors TS10, TS11 which conduct for the duration of the control signals charging or discharging a capacitor C L  depending on an increase or decrease of frequency of input pulses. The capacitor C L  is followed by a low-pass filter R S , C S  at whose output is applied the variable corresponding to the repetition frequency of the input pulses via a further resistor connected to terminal G, the sum of the two variables V E  being applied to the oscillator OS which is an astable multi-vibrator. The control unit SEG as shown in Fig. 4 comprises a transistor TS1 conducting at the end of input pulses to charge a capacitor C 1 , transistor TS 3  connected in parallel to C 1  and driven to conduction by the input pulses to discharge C 1  and a transistor TS 2  conducting for the duration of input pulses supplied at its base, to charge a second capacitor C 2  to the voltage across C 1 , the output of a low pass filter R 2 , C 3  connected to C 2  providing the desired input repetition frequency dependent variable. In the temporary absence of input pulses to the generator, transistors TS10, TS11 (see Fig. 2) do not conduct but since capacitor C L  has a short charging time constant and a long discharging time constant, timing pulses continue to be supplied at the previous frequency. To achieve proportional action instead of integral action described above, a bipolar switch Sch (Fig. 2) is provided which charges capacitor C L  to a fixed potential upon the appearance of each input pulse.
Patent GB-1170989-A (GB)
Title: Rubber Compositions containing Aryl Borate Resins
IPC: C08L23/16
Filed: 1967-10-27
Abstract: 1,170,989. Laminates and laminating. SCHENECTADY CHEMICALS Inc. 27 Oct., 1967 [27 Oct., 1966], No. 49038/67. Heading B5N. [Also in Divisions B7 and C3] Layers of synthetic rubber may be bonded together using as tackifier a thermoplastic resin prepared from an aldehyde and an aryl borate. Both rubber layers may be unvulcanized and contain a vulcanizing agent or one may be vulcanized as in retreading a tyre. In Example 1 the tackifier is contained in a cement also comprising a rubber formulation and a solvent. In Example 2 the tackifier is incorporated into the rubber layers. In both cases the rubber is vulcanized as the bond is made. Rubber formulation employed in the examples comprise either (A) an ethylene - propylene - cyclopentadiene rubber or (B) an ethylene - propylene - hexa - 1,4-diene compounded with carbon black, an aromatic oil, zinc oxide, stearic acid, mercaptobenzthiazole, tetramethylthiuram monosulphide and sulphur. Tackifiers used are derived from the borates of p-tert.-butylphenol, p-tert.- octylphenol, p-cresol, p-tert.-amylphenol, pdodecylphenol and/or styrylphenol and paraformaldehyde or benzaldehyde.
Patent GB-1327467-A (GB)
Title: Pharmaceutical compositions for inhibiting indoleamine- n-methyl transferase
IPC: A61K31/00
Filed: 1971-02-18
Abstract: 1327467 Medicines for mental diseases MERCK & CO Inc 4 Oct 1971 [12 Oct 1970] 49042/72 Divided out of 1327464 Heading A5B Compositions having indoleamine-N-methyl transferase-inhabiting activity and useful in the treatment of mental disorders comprise a carrier and the compound 1-pyrrolidine carboxamidine or a salt thereof. They may be in conventional forms for oral and parenteral administration and may comprise conventional excipients.
Patent GB-1060099-A (GB)
Title: Improvements relating to multipartite warp beams
IPC: D02H13/28
Filed: 1964-12-03
Abstract: 1,060,099. Warp beams. VEREINIGTE GLANZSTOFF FABRIKEN A.G. Dec. 3, 1964 [Dec. 6, 1963], No. 49230/64. Heading DIE. A warp beam has flanges 1 and 4 butt welded to a central tube 3.
Patent GB-1292024-A (GB)
Title: Improvements in or relating to prepayment systems
Inventor: CONSTABLE GEOFFREY ERNEST PATR
IPC: G07F7/00
Filed: 1968-10-18
Abstract: 1292024 Prepayment apparatus SMITHS INDUSTRIES Ltd 17 Oct 1969 [18 Oct 1968] 49419/68 Heading G4V [Also in Division B6] Prepayment apparatus comprises means for receiving a token having portions representing units of prepayment for use of a facility, means for registering the number of portions on the received token so as to provide a measure of the number of prepayment units available for expenditure, and means for controlling use of the facility in accordance with this measure. The prepayment apparatus (4), Fig. 1 (not shown), controls the supply of electricity (or gas) to a domestic circuit by controlling energization of relay (3) in the mains line. The relay may be separate from or form part of the electricity (or gas) meter (2); a unit (7) attached to or forming part of the meter monitors the meter reading photo-electrically to pulse a solenoid 6 in the prepayment apparatus according to the power consumed. The token is a rectangular polyvinylchloride sheet bearing longitudinally a narrow strip of corrugations 10 (Fig. 2). The number of corrugations represents the number of units of pre. payment on the token. A magnetic recording may be provided for an authenticity check. Operation.-A token inserted in a slot 11 (Fig. 4) rests on a shutter 14, and reciprocation of a lever 15 releases the token on to a shutter 17 and then to the base of a shoot 13. Movement of a handle 21 rotates a gear wheel 18, the corrugations 10 of the token meshing with the gear wheel 18 to transmit the motion to a second gear wheel 19 until the token drops into a retaining compartment 22. A hole may be punched through the corrugations 10 to cancel the token. The movement of gear wheel 19 is transmitted through a wire-ratchet 24 or differential gearing (not shown) to rotate in a first direction a drum 23. A cam 32 carried by the drum prevents further operation of lever 15 and insertion of another token, until drum 23 has been rotated by a small angle in the opposite direction back towards its starting position. When a predetermined quantity of power has been consumed by the domestic circuit, the solenoid 6 is pulsed to allow a ratchet 27 to partially rotate the drum 23 in the opposite direction. As the drum nears its starting position, an arm 30 closes a switch 8 to activate a warning lamp. A second arm 31 opens a switch 5 as the starting position is reached, to de-energize the circuit relay (3) (Fig. 1) and cut-off the electricity supply. Gear-wheel 19 and drum 23 are made of non-magnetic material to prevent fraudulent actuation. A spiral 29 drawn on the end face of drum 23 is viewed through an aperture 28 in a casing to indicate the angular position of the drum.
Patent GB-1189319-A (GB)
Title: Automatic Slack Adjusters
Inventor: TREGONING GEOFFREY ROBINSON
IPC: B61H15/00
Filed: 1967-10-31
Abstract: 1,189,319. Brakes. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 20 Sept., 1968 [31 Oct., 1967], No. 49470/67. Heading F2E. An automatic slack adjuster of the type having a worm and worm-wheel includes a oneway clutch device 12 surrounding a shaft 5 rigid with the worm 4, the device 12 being rotatable relative to the shaft 5 in one direction of rotation, clutched to the shaft 5 in the other direction and looked against rotation when the brake is applied. The worm 4 and shaft 5 are urged in the direction in which a lever 1 is  moved to apply the brakes, i.e. clockwise as seen in Fig. 2, by belleville washers 6. As the lever 1 is rotated to apply the brake, the device 12 which is provided with teeth moves a rack 20 slidable on a member 21 to take up a lostmotion Y which corresponds to the normal brake clearance, the member 21 being spring urged against a stop 23. As the lever is rotated further the reaction on worm 4 is sufficient to overcome the force of the washers 6 so as to clamp the device 12 between the worm 4 and a shoulder 17 on the lever 1. Should there be an excessive brake clearance is when the lost motion Y is taken up the brake is not yet applied, as the lever 1 is rotated further the device 12, not having been, clamped, is rotated relative to the shaft 5 in one direction by its movement relative to the rack 20, which is held stationary with the member 21 by a spring 22, to measure the excessive clearance until the brakes are applied to clamp the device 12. Upon release of the brake the device 12 is rotated in the other direction so as to clutch the shaft 5 to rotate the worm 4 in a direction to cause the worm-wheel 3 to close the brake clearance. The one-way clutching of the device 12 may be provided by faces (13) on the radially inner surface of the device 12 which faces each constitute one of a pair of relatively inclined faces with the outer surface of shaft 5, and a roller (14) situated between each of these pairs of faces, Fig. 1 (not shown). The slack may be adjusted manually by a nut 30.
Patent GB-1241686-A (GB)
Title: Enhancement of steel sheet punchability
IPC: B21D37/18
Filed: 1968-10-18
Abstract: 1,241,686. Modifying steel surfaces. KAWASAKI STEEL CORP. Oct.18, 1968 [Oct. 18, 1967], No. 49472/68. Heading C7U. Ferrous sheet is treated with an aqueous solution containing by weight: - 100 parts chromic acid 16-20 parts calcium 8-20 parts polyhydric alcohol and baked at e.g. 200-500C. to improve its punchability, corrosion resistance, heat resistance and weldability. The calcium may be provided by calcium bichromate, CaO, Ca(OH) 2 , CaCrO 4  or Ca CO 3  and the polyhydric alcohol may be ethylene glycol, glycerine, sucrose or grape sugar. A non ionic surface active or melting agent such as a polyexyethylene alkyl ether in an amount of 0À002-0À5% may also be present. The coating thickness is 0À5-2À5 microns. The treatment is particularly effective for electrical steel sheet containing less than 4% Si.
Patent GB-1119268-A (GB)
Title: Hybrid circuit
IPC: H04M9/00
Filed: 1966-11-04
Abstract: 1,119,268. Substation circuits. GYLLING & CO. A.B. 4 Nov., 1966 [16 Dec., 1965], No. 49566/66. Heading H4R. In a loud-speaking telephone substation provided with separate transmit and receive amplifiers, a combined hybrid/anti-sidetone circuit comprises a transistor GT having base and emitter electrodes to which microphone signals of equal phase and amplitude are applied and to which line signals of unequal amplitude are also applied, and having a collector electrode from which amplified line signals containing no trace of microphone signals are derived. Impedances Z1, Z2 which serve to split the microphone signal prior to its application to the transistor are preferably resistive and are chosen so as to match the substation to the line, although the circuit shown tends in any case to compensate for lines of different length. Capacitors C1 and C2 act as power sources for the circuit and they have time constants such that transistors MT and GT cut-off rapidly when the line loop is broken at hang-up or during dialling so as to eliminate the possibility of clicks in the loud-speaker or the possibility of self oscillation due to acoustic feedback. In another embodiment (Fig. 2, not shown), a better match of the circuit to line is obtained by including a transistor in the impedance Z3, the transistor and its associated components being an active impedance whose actual value varies in dependence on whether signals are applied from the microphone or the line.
Patent GB-1372083-A (GB)
Title: Sound records and reproducing apparatus
IPC: G11B7/12
Filed: 1971-10-26
Abstract: 1372083 Recording and playback RCA CORPORATION 26 Oct 1971 [27 Oct 1970] 49637/71 Heading G5R A sound recording takes the form of a variablewidth track 12 having a diffraction grating pattern 13 embossed thereon, on a transparent or reflective tape 11. As shown, Fig. 2c, the initial recording is made by exposing, e.g. by contact printing from a cine-film sound track, and processing a photo-resist layer 16<SP>1</SP> which initially covers the embossed surface of the tape 11. A metal master tape may be made and used for pressing duplicate tapes as described in Specification 1,326,767. Such a sound track may run alongside an embossed holographic video recording 14, Fig. 1b, and during playback, Fig. 4, both portions of the tape may be scanned by the same light source 35 which may  be a laser.
Patent GB-1109920-A (GB)
Title: Esters of itaconic acid and polymeric derivatives thereof
Inventor: HALL MICHAEL EDGAR
IPC: C08F22/00
Filed: 1965-11-25
Abstract: Polymers or copolymers of novel esters of itaconic acid of formula <FORM:1109920/C3/1> where R is an ethylene group or an alkyl or aryl substituted ethylene group and n is 1 or 2 specifically (2 - hydroxyethyl) (2 - [hydroxyethoxy]ethyl) itaconate and (2-hydroxypropyl)-(2 - [2 - hydroxypropoxy] propyl) itaconate (see Division C2) are prepared by conventional methods.  Ethylene, propylene, isobutylene, styrene, butadiene, methyl and ethyl acrylates and methacrylates, acrylic acid, itaconic acid, acrylonitrile, and vinyl esters of carboxylic acids may be the comonomers, and the presence of the hydroxyl groups allows cross-linking with resins such as urea- and melamine-formaldehyde resins or condensation with di- or polycarboxylic acids to give unsaturated polyester resins or with di- or poly-isocyanates to give unsaturated polyurethane polymers. Examples describe the copolymerization of the esters with styrene and butadiene, and methyl methacrylate with emulsion technique using an aq. mixture of the monomers, potassium persulphate, sodium bisulphite and sodium hydroxide and emulsifiers to give stable emulsions suitable as paint vehicles or as paper coating agents.ALSO:Esters of itaconic acid of formula <FORM:1109920/C2/1> where R is an ethylene group or an alkyl- or aryl-substituted ethylene group and n is 1 or 2, specifically (2-hydroxyethyl)(2-[2-hydroxyethoxy]ethyl)itaconate and (2-hydroxypropyl)(2-[2-hydroxypropoxy]propyl)itaconate are prepared by reacting an excess of three molar proportions of ethylene or an alkyl- or aryl-substituted ethylene oxide with itaconic acid in the presence of a lithium catalyst.  Lithium chloride, bromide, iodide, sulphate, acetate, benzoate, hydroxide or hydride may be used and an inhibitor such as p-methoxyphenol added.  The compounds may be homo- or copolymerized (see Division C3).
Patent GB-1507800-A (GB)
Title: Baling presses
IPC: B30B9/30
Filed: 1976-12-01
Abstract: 1507800 Baling presses LINDEMANN MASCHINENFABRIK GmbH 1 Dec 1976 [13 Dec 1975] 50166/76 Addition to 1419031 Heading B5F In a baling press comprising a plunger 3 reciprocating in a press box 1 and a filler shaft 8 opening into the press box 1 from above, one of walls of the shaft 8 is movable towards and away from an opposite wall 21 to vary the cross-sectional area of the shaft. In the embodiment shown, the movable wall 11 comprises an upper part 11b hinged to a lower part 11a, the upper end of the part 11b resting on a guide roller 10. In another embodiment, Figs. 3 and 4 (not shown) the upper wall part (11e) is pivotally mounted at its upper end and its lower end rests loosely inside the top end of the lower wall part (11d). In both embodiments the lower wall part remains vertical during movement. Material to be pressed is fed into the shaft 8 by a conveyer 20.
Patent GB-501856-A (GB)
Abstract: 501,856. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Inc. Nov. 24, 1937, No. 32349. Convention date, Nov. 24, 1936. [Class 97 (iii)] In a gyroscopic apparatus comprising a gyroscope which is processed by an automatically applied torque into a predetermined position relatively to an independent directiongiving member, e.g. a magnetic compass, means are provided for reducing the gyroscopic moment in order to effect quick setting of the gyroscope. In the gyro-magnetic compass shown, the rotor 17 spins on ball-bearings 18 in a casing 42 pivoted on horizontal air film bearings 13 in a vertical ring (not shown), which pivots on vertical air film bearings in an outer sealed casing. Air is sucked from the outer casing and is replaced by air entering through a gauzed opening and serving to supply the air film bearings, the rotor spinning jet 15, air bearings for the magnetic element 26, the reaction jets of the magnetic element, and an erecting device. Air jets 29, 29<1> issue from the magnetic element 26 and co-operate with baffles 30, 30<1> to provide a torque about the horizontal axis when the magnetic needle 25 is not in the plane of rotation of the rotor. The erecting device comprises oppositely directed air jets 19 differentially controlled by a pair of shutters 21 secured to a pendulum 22, which is pivoted on 'jewel bearings 23. Speed controlling means for the rotor comprises a pair of leaf springs 33 anchored to the rotor at 34 and carrying at their free ends pins 36 adapted under the influence of centrifugal force to engage a brake shoe 36, pivoted to the casing 42 at 361. When air is withdrawn from the outer casing to start the apparatus a bellows 38 with a leak 39 expands and lifts the brake shoe 36 into operative position by means of a lever 40. After a time the pressure inside the bellows becomes the same as that in the outer casing. The brake shoo 36 is then withdrawn and the rotor assumes its normal speed. Specification 466,864 is referred to.
Patent GB-1485570-A (GB)
Title: Apparatus for rendering pigs unconscious in an automatic manner
IPC: A22B3/06
Filed: 1975-12-08
Abstract: 1485570 Stunning pigs GU ANDERSSON 8 Dec 1975 [10 Dec 1974] 50209/75 Heading AIM Apparatus for electrically stunning pigs comprises a chamber 1 for holding one pig at a time and having entrance doors 5, an exit trap door 28 and a conical funnel 13 mounted for movement on guides 9 towards and away from a pigs head. The funnel includes an electrode 19 which is pressed inwardly by the pigs snout and triggers a sensor 18 which energises a piston-and-cylinder unit 17 pivoting on electrode 16 carried by a lever 14 against the pigs head. An electric shock is thereby administered. After a period set by a time relay the piston-and-cylinder unit 17 retracts the electrode 16, and a piston- and-cylinder unit 20 retracts the funnel 13. During the return movement an arm 29 carried by the actuating linkage of unit 20 displaces a lever 25 which releases a catch 27 allowing the trap door 28 to open under the weight of the pig, the pig then falling down a reception chute. The trap door and catch are spring returned to their original positions. Return of the trap door to its closed position actuates a sensor 31 controlling a piston-andcylinder unit 6 opening the entrance doors 5. The entrance doors close when a pig pushes an arm 8 aside.