baber/WOPTO huggingface dataset:
Patent GB-1404192-A (GB)
Title: Switching apparatus
IPC: H03K17/04
Filed: 1972-06-07
Abstract: 1404192 Control of D.C. motors; switching  systems for consuming apparatus ELECTRO MECHANICAL CONSTRUCTION Ltd 20 June 1973 [7 June 1972] 26461/72 Heading H2H and H2J [Also in Division H3] A load, for example a D.C. motor, is supplied from a D.C. source through a transistor TR1 and silicon controlled rectifier SCR1, the transistor being switched on and off by a signal including a sawtooth waveform to produce corresponding switching of the controlled rectifier. Transistor TR1 is normally switched off by a constant negative bias applied from resistor R3, a positive bias obtained from a resistor chain VR1, R4 being insufficient to override the negative bias even with resistor VR1 set to produce the maximum bias. The positive bias is augmented by the sawtooth waveform produced by the charge and discharge of a capacitor C4 obtained by use of a constant current circuit TR5, R10, R11, R12, ZD1 and a transistor TR6 periodically made conductive by pulses applied to its base from a multivibrator circuit (not shown). Thus the transistor TR1 is switched on for portions of the positive periods of the sawtooth adjustable by the resistor VR1, the conductive periods of the rectifier SCR1 being predetermined, relative but not absolutely to the conductive periods of the transistor, by appropriate selection of the impedance values of the networks C2, R1 and R2, D1 of which the former transmits a positive pulse to the gate of SCR1 via the capacitor C2, this potential being maintained when the capacitor C2 is fully charged by the resistor R1. Members R2, D1 determine the steady state potential applied to the gate of rectifier SCR1. The maximum current supplied to the load for a particular setting of the resistor VR1 is predetermined by selection of the values of resistors R1, R2, which determine the instant at which rectifier SCR1 starts to conduct after switch-on of the transistor TR1. Switch-off of the latter causes switch-off of rectifier SCR1 due to the absence of a sufficient holding current. A safety circuit comprising members TR2, TR3, R5, R6, R7, R9, R14 D2 D3 D4 prevents the rectifier SCR1 being turned on when the transistor TR1 is made conductive, the abovementioned multivibrator circuit supplying pulses to the bases of transistors TR2, TR3 when conduction of rectifier SCR1 is to be prevented. Application of the invention to switch two silicon controlled rectifiers alternatively in 180 degree phase relationship is envisaged.
Patent GB-1161717-A (GB)
Title: Process for Manufacture of Multi-Coloured Synthetic Polyamide Fabrics
IPC: D06P3/82
Filed: 1967-06-08
Abstract: 1,161,717. Process for multi-colour dyeing of polyamide fibres. TOYO RAYON K.K. 8 JUNE, 1967 [8 June, 1966], No. 26537/67. Heading D1B. Fabrics composed of at least two polyamide fibres which are chosen such that a) each of up to three fibres belongs to a different class of the following 3 classes, 1) fibres having less than 5 x 10<SP>-5</SP> mole/gm of terminal amino groups, II) fibres having 5 x 10<SP>-5</SP> to 7 x 10<SP>-5</SP> mole/g of terminal amino groups III) fibres having more than 7 x 10<SP>-5</SP> mole/g of terminal amino groups b) the difference of mole/g of terminal amino groups in the respective fibres is at least 2 x 10<SP>-5</SP> mole/g, are dyed at pH 4-7 with an acid dye where absorption ratio as defined is less than 1:20. Optionally further acid dyes or dispersion dyes may be present or an adduct of ethylene oxide and an aliphatic primary amine having 12-18 carbon atoms the molar ratio of ethylene oxide to amine being from 2:1 to 30:1 or a printing or padding medium may contain an organic solvent having up to 12 carbon atoms and at least one alcoholic hydroxy group for 6 carbon atoms.
Patent GB-1427772-A (GB)
Title: Marine propulsion transmission
IPC: B63H20/20
Filed: 1973-04-26
Abstract: 1427772 Outboard motors OUTBOARD MARINE CORP 26 April 1973 [3 May 1972] 26542/75 Divided out of 1427771 Heading B7V The subject matter is identical to that of Specification 1,427,771, but the claims are concerned with the mechanical control linkage in the outboard motor reversing transmission.
Patent GB-1439678-A (GB)
Title: Process for the preparation of benzoquinolizine derivatives
IPC: C07D455/08
Filed: 1973-06-04
Abstract: 1439678 Derivatives of 2-(isoquinolyl-1- methyl)benzo[a]quinolizine CHINOIN GYOGYSZER - ES VEGYESZETI TERMEKEK GYARA RT 4 June 1973 [2 June 1972] 26560/73 Heading C2C A process for making compounds (I) or their 1<SP>1</SP>-epimers, and acid addition salts thereof, comprises condensing an aldehyde (V) with 3-HO-4-R<SP>3</SP>O-C 6 H 3 CH 2 CH 2 NH 2  and alkylating the thus formed precursor of I in which R<SP>4</SP> is H. In the formulae, R<SP>1</SP> ,  R<SP>2</SP> ,  R<SP>3</SP> and R<SP>4</SP> are each C 1-4  alkyl.
Patent GB-204897-A (GB)
Title: Improved textile fabric and method of manufacturing the same
IPC: D03D25/00
Filed: 1922-10-03
Abstract: 204,897. Balay, C. Oct. 3, 1922. Double and multiple fabrics; paper fabrics; materials, special, fabrics containing; yarns specially treated, fabrics with; figured fabrics; ornamental non-metallic strips, fabrics with.- The fabric comprises flat strips of strong paper 1 forming a warp, intermediate warp threads 2 of cotton &c., and binding weft threads, forming a support whereon figured effects are produced by warp floats 5, 6 covering the paper strips on one or both sides, or by weft floats 4, or both. Warp floats may comprise slivers of artificial silk superposed on the paper strips. The weft floats may comprise slivers 4 of cotton, artificial silk or artificial silkwaste. Combinations of artificial silk, silk and cotton &c. may be used with coloured, glace, glossy, or matte paper. Glycerined papers may be used, or the fabric may be made supple by dipping in known softening baths. A jacquard may be used to produce ornamental effects. The weft floats themselves may act as binding threads.
Patent GB-1199845-A (GB)
Title: Time-Domain Equalisation Apparatus
Inventor: GOROG ETIENNE
IPC: H04L25/03
Filed: 1968-06-05
Abstract: 1,199,845. Transversal equalizers. INTERNATIONAL BUSINESS MACHINES CORP. 5 June, 1968 [14 June, 1967], No. 26678/68. Heading H4R. In a transversal equalizer for use in a system e.g. of Specification 1,154,648 or Specification 1,076,557, in which digital data is transmitted in a code whose frequency spectrum matches the channel pass-band, and in which data bits are transmitted as interleaved groups of pulses, e.g. a data bit of one value being represented as shown in full line in Fig. 1a (1) and the data bit of the other value being as shown dotted in that Figure, so that detection of the two states requires multiple samples at different instants, the transversal equalizer is provided with two combining networks 31 and 32 in Fig. 3, both connected at points along the same tapped delay line 30, the points at which each combining network is connected being selected to provide equalization for a respective one of the pulse signal states. A simplification of the line can be achieved, Fig. 4 (not shown), by taking the main pulse for each state from a different tapping on the line.
Patent GB-504442-A (GB)
Title: Grounding device for coaxial conductor lines
IPC: H04B3/44
Filed: 1938-09-13
Abstract: 504,442. Cables; test boxes. STANDARD TELEPHONES & CABLES, Ltd. Sept. 13, 1938, No. 26707. Convention date, Sept. 22, 1937. [Classes 36 and 38 (i)] The outer conductor of a coaxial cable comprises a cut away portion arranged to be opened and closed by a sleeve or shutter slidable relatively to the conductor, an arm being so mounted on the outer conductor that movement of the sleeve or shutter to open the cut away portion causes the arm to make contact with the inner conductor while movement of the sleeve or shutter to close the cut away portion causes the arm to be retracted out of contact with the inner conductor. Coaxial lines 108, 109, Fig. 1, are fed with carrier frequency currents from sources 110, 113 and the inner conductors are fed at attended repeater stations with power from a supply 117 for energizing the repeaters at unattended stations as described in Specification 441,825, [Croup XXXIX]. Each outer conductor is provided with openings 120, 121 in the latter of which is mounted a resilient arm 125 anchored at 124: the openings 120, which serve for testing, are normally covered by sleeves 127 which depress the arms 125 when moved to expose the openings 120 : collars 129 limit movement of the sleeves. Alternatively, the openings 121 may be eliminated, the arms 125 projecting through the openings 120. In a modification, a single sleeve embraces both coaxial lines.
Patent GB-335041-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41F3/36
Filed: 1929-09-03
Abstract: 335,041. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). Sept. 3, 1929. Intaglio-plate printing; impression adjustments; bed-reciprocating apparatus.-In a plate printing-machine in which the plate 20<1> is carried by a reciprocating bed 20, the bed 20 is moved over a track which is raised and lowered to permit the plate to contact with the stationary inking and wiping mechanisms 14, 16, 16<1>, as the plate moves to the left, and with the impression roller 21 at the commencement of the motion of the plate to the right. The track consists of sliding members 25 arranged near each side frame 11 of the machine, which are supported on rollers 46 and are reciprocated from a cam 39 bv lever-and-link mechanism 27, 29, 31, 33, 36. The track members are lowered when their cut-away parts 59, 59<1> are supported by the rollers 46. The bed 20 is reciprocated by a roller 56 on an endless chain 47 which engages a vertical slit 57 in a driving-fork 54 attached to the bed 20. The fork 54 is guided longitudinally by a longitudinal slot fitted to slide along a fixed guide. The sheet to be printed is registered with its rear edge against stops 24, and, as the bed commences to move to the Tight, the impression cylinder 21 is thrown on impression, and the sheet is pressed against the inked plate by the cylinder 21. The tracks 25 are then moved to depress the bed so that the printed sheet passes the wiping and inking mechanism without contacting therewith. The sheet is detached for delivery before the return of the plate which is raised for inking and wiping purposes. The bearings of cylinder 21 are rotated to raise this cylinder after the impression has been taken to allow the inked plate to pass under it without contact.
Patent GB-406774-A (GB)
Title: Improvements in or connected with gas meters
IPC: G01F3/22
Filed: 1932-09-27
Abstract: 406,774. Gas meters ; traffic signals ; advertising-apparatus; valves. GLOVER & CO., Ltd., T., and McINTOSH, W. B., Angel Road, Edmonton, London. Sept. 27, 1932, No. 26810. [Classes 54 and 135.] Intermittent illumination by gas burners of road traffic signals, shop windows, flood lights, advertising and announcement signs &c., is effected by supplying the gas through a meter in which the gas, after passing through the bellows chambers, is discharged from the outlet pipe 10<c> into the upper chamber 10 from which it can pass to the burners through pipes 13, 14, 15 connected to compartments in a box 11 having on its upper surface ports 11<d>, 11<e>, 11<f> controlled by an intermittently operated slide valve 12. The burners are ignited by pilot burners supplied continuously from the chamber 10 through a pipe 16. The slide valve 12 is operated by a connecting rod 25 from a crank shaft 23 carrying a pinion 22 meshing with a pinion 21 which is intermittently engaged by a toothed sector 20 on a crank shaft 17 rotated by the bellows flag rods through a linkage 18. The gas meter may be provided with index mechanism X operated from the crank shaft 17.
Patent GB-656677-A (GB)
Title: Drive for fans of air-cooled engines
IPC: F01P5/04
Filed: 1948-10-14
Abstract: 656,677. Cooling cylinders. TATRA, NARODNI PODNIK, and POPELAR, V. Oct. 14, 1948, No. 26813. Convention date, Oct. 14, 1947. [Class 7(ii)] An axial-flow fan 7 for supplying cooling- air to horizontallyopposed engine cylinders is mounted on a vertical shaft 6 and is driven through bevel gears 4, 5, or worm gearing, from the shaft 3a of a lighting dynamo, the shaft 3a being driven by a belt 2a from the crankshaft 1. A friction or other elastic coupling may be included in the drive.
Patent GB-1049018-A (GB)
Title: Improvements in or relating to shaped coke
IPC: C10L5/22
Filed: 1965-06-24
Abstract: A method for continuously manufacturing shaped coke without a binder comprises shaping a mixture of coke, e.g. fluid coke, and a coking coal at a temperature within the plastic range of the coal, e.g. about 400 DEG  C., and heating the shapes so formed with a granular heat carrier, e.g. sand, at a temperature of 900 DEG  to 1200 DEG C., the proportions of shapes and sand being such that the shapes are heated to 800 DEG  to 1100 DEG  C. in not more than 30 minutes. The shapes are then separated from the sand and gas-cooled. Particulate coal and coke are employed, and one or both may be preheated, the relative amounts (coke to coal) being from 5 to 1 to 1 to 3 by weight, and shaping may be in pelletizing drums or roller or ram presses. Relative proportions of sand to shapes respectively are 5 to 1 to 20 to 1 by weight.  The sand is circulated through a heater. Three examples are given, coking times of 10 and 20 minutes being mentioned.
Patent GB-830270-A (GB)
Title: Electrically-operated fluid-pressure braking system
Inventor: DEWAR DOUGLAS
IPC: B64C25/44
Filed: 1956-09-04
Abstract: 830,270. Fluid pressure brakes. DUNLOP RUBBER CO. Ltd. Nov. 28, 1957 [Sept. 4, 1956], No. 26964/56. Class 103 (1). An electrically operated fluid pressure breaking system comprises a switch 2, operable by a pedal or the like 1, to energize a line to a potentiometer 4, further movement of the pedal 1 operating a sliding contact 3 on the potentiometer to vary the potential supplied therefrom to the left-hand side of a moving-coil relay 10. The relay 10, which has a central #OFF" position, has its right-hand side connected to a second potentiometer 13, the sliding contact of which is moved in accordance with the variation of brake cylinder pressure at operation against the piston 43. The contactor arm 16 of the relay 10 is moved to the left or right according to the total affect of the potentiometers 4 and 13. Movement to the left of contactor arm 16 against contact 18 energizes a relay 24 so as to break the circuit to the windings of solenoid 30 and 31 so that pressure fluid supply valve 41 is closed to cut off fluid from an accumulator 34, and valve 42 opens to vent the brake cylinder to exhaust. Movement of the contactor arm 16 to the right causes energization of solenoids 30 and 31 so that the accumulator 34 is placed in communication with the brake cylinder 36 and the exhaust outlet is closed.
Patent GB-669827-A (GB)
Title: Servo motor control
IPC: G05D3/12
Filed: 1948-10-19
Abstract: 669,827. Control of A.C. motors. BENDIX AVIATION CORPORATION. Oct. 19, 1948. [Dec. 20, 1947] No. 27090/48. Class 38 (iii). [Also in Group XXXVIII] In a motor follow up control system, displacement of the rotor of a resultant field transmitter from its null position relative to the rotor of a corresponding receiver develops an error signal which energizes a motor, to restore the receiver rotor to its former null position, through a limiting degenerative harmonic repressing amplifier and an output transformer which is D.C. saturable under no signal conditions to brake the motor to suppress hunting, the D.C. decreasing so as to reduce the saturation as the error signal increases. The A. C. energized rotor winding 16 of a transmitter 17 is displaced from a null position relative to the rotor 21 of the interconnected receiver 19 to develop error signals at the tuned transformer 23 feeding the grid of a pentode 31 biased to operate as a limiter amplifier, with a degenerative feedback path through condenser 51 which lowers the H.F. response to repress harmonics of the error signals which might cause erratic operation. The limiter is resistance coupled. to a duo-triode parallelled as a cathode follower 55 feeding the grid of a beam power tetrode 82 through a gain control 68, to energize a tuned output transformer 90, constructed so that its core is saturated by the tetrode direct plate current in the absence of an error signal. The secondary energizes one winding of a two-phase induction servomotor 12, whose other winding is energized from the A.C. source to drive the rotor of the receiver 19. The tetrode is biased so that at the maximum error signal input its anode current falls to a low value, and the transformer is unsaturated so that its secondary impedance equals the full load impedance of the winding 15. As the rotor 21 is driven into coincidence with the rotor 16, the error signal falls and the tetrode anode current rises, so that the servomotor operation is increasingly damped until at coincidence the motor winding is completely shunted by the low secondary impedance of the saturated transformer and the rotor 21 stops in the null position without hunting. The transformer construction is described. Alternatively, the transformer may be saturated by the diode rectified amplified error signal in opposition to a fixed.D.C. signal, applied to a tertiary transformer winding.
Patent GB-1237435-A (GB)
Title: Apparatus for monitoring the position of railway track
IPC: E01B35/00
Filed: 1968-06-07
Abstract: 1,237,435. Monitoring track alignment. F. PLASSER. 7 June, 1968 [12 June, 1967], No. 27231/68. Heading B7N. In apparatus for monitoring and/or correcting the alignment of railway track in which the position of a grade rail is compared with that of a reference line or chord 4, the wheel flanges of the trolleys 5, 6 carrying the line or chord and the measuring trolley 8 are urged into position sensing contact with the grade (left) rail 3 by magnetic means. The chord 4, Fig. 2, is supported on rear axle 12 of trolley 5 and the axle is secured to an armature 14 carrying a pair of coils 16, 17. When coil 16 is energized, the armature and axle are moved to the left, forcing the flange of the left wheel on axle 12 into contact with the grade rail. The flanges of the left-hand wheels of the axles 11, 15 of the measuring trolley, Fig. 3, are urged into contact with the grade rail by an electromagnet 19 mounted on the axle supporting frame 8, which is attracted to the rail but held therefrom by an anti-friction roller.
Patent GB-1439231-A (GB)
Title: Method and apparatus for bandsawing operation with profile- sensing means capable of automatic copying of a model
IPC: B23D55/10
Filed: 1973-06-07
Abstract: 1439231 Band saws FUKAMI CO Ltd 7 June 1973 [15 June 1972] 27253/73 Heading B5L A band-sawing machine comprises a profile sensing device 35 having a member 43 adapted to detect the profile of a model 31, means for converting displacement of the sensing member into rotation of a motor 50 adapted to rotate by an amount and in a sense determined by said displacement a bandsaw blade deflecting member 58 driven by said motor to pivot the saw blade about its cutting edge so that it cuts in a direction corresponding to the detected profile of the model, and means to cause a workpiece to be moved relative to the saw blade in accordance with the sensed profile. As described the workpiece model 31 is supported on a workpiece delivery table 7 which is mounted for longitudal movement to feed a workpiece to a saw blade 6, and for transverse movement under the control of an air cylinder 12 to determine the direction of feed of the workpiece to the saw blade. A jig table 8 having a slot 18 for the blade 6 is linked to the table 7 for transverse movement only.  In operation as the workpiece is advanced on the table 7 the model 31 causes the profile sensing roller 43, Fig. 2, to produce rotation of a member 41 about its axis. A rotor 46 on the member 41 co-operates with a stator 47 to produce an electrical signal which is fed to the motor 50, Fig. 1, to cause rotation thereof by an amount and in a direction determined by said signal. Via suitable linkages the motion of the motor is transferred to rods 57 each connected to a blade deflecting member 58. The member 58 includes guide rollers and guide blocks for the blade so that when the member 58 is rotated by one of the rods 57 the blade pivots about its cutting edge. The motion of the member 58 is fed back via a link work and arm 49, Fig. 2, to the profile sensing device 35. Rotation of the member 58 also operates a valve controlling the supply of air to the cylinder 12 so that the workpiece is always fed in the direction of the width of the saw blade. A resiliently mounted roller 71, Fig. 6, supports the back edge of the bade 6, and if excessive forces are developed on the blade a contact board 78 linked to the support shaft 72 of the roller 71 operates a micro switch 79 to stop the machine and prevent breakage of the blade.
Patent GB-709960-A (GB)
Title: Improvements in and relating to card filing devices
Inventor: ROSS HARRY HERMAN
IPC: B42F17/02
Filed: 1951-11-20
Abstract: 709,960. Filing papers. BRITISH TABULATING MACHINE CO., Ltd. Nov. 20, 1951, No. 27255/51. Class 146(1) A card filing tray comprises a box-like structure 1 having two or more compartments and separators 4 for spacing apart batches of cards, each separator 4 having a lug 5, 12, 12 on each of three sides, the fourth side having an L-shaped portion 10, 11 extending therefrom over a portion of its length, base and outer edges of opposing side walls of each compartment having slots 3, 2, 2 adapted to engage with the lugs 5, 12, 12 to maintain the separators 4 substantially perpendicular to the base, the proportions of the L-shaped portion in relation to the cards being such as to space the cards from the separator proper by an amount to allow insertion of a finger for card removal. The tray 1 is divided into compartments by fixed partition walls 31 and the side and partition walls have a folded over strip 32 secured thereto, the strip having a series of slots 2 spaced at the same intervals as the series of slots 3 in the base of each compartment. A batch of cards between separators will normally occupy several times the space between adjacent slots. The lugs 12 of the separators 4 are arranged so as not to extend through the slots 2 to the next compartment and are of half the depth of the slots 2 so that a slot between the compartments can be used from both sides, the bottom lug 5 being long enough to lie in the corresponding slot 3 whether the lugs 12 are in the bottom or top half of slots 2. To prevent accidental withdrawal, the lug 5 is provided with grooves 6, 7 to co-operate with the edge of a slot 3 at the two depths of insertion. The L-shaped portions 10, 11 may have an index clip on the top portions 10, formed by turned over edges 8, 9 between which an index label may be slid. The rear wall of each compartment may also have a similar L-shaped portion, and the L-shaped portions 10, 11 may be on the left as shown, or centrally placed. The tray is preferably supported at a slight angle to the vertical as shown, the support comprising front feet 24, 25 of metal with rubber pads 26, 27 screwed thereto, the metal strips being welded to the end.of the tray 1, and the opposite ends bent over and linked to straps 13, 14 by hinge pins. Clips 20 and 21 (not shown) are welded to the upper end of the tray and U-shaped back stay limbs 18, 19 are attached thereto by screws. The angle of the tray is adjusted by insertion of the strap members 13, 14 in appropriate holes 17 in the back stay where they are maintained by screws 15, 16.