baber/WOPTO huggingface dataset:
Patent GB-1292643-A (GB)
Title: Ethylene/tetrafluoroethylene copolymers
IPC: C08F214/26
Filed: 1969-10-30
Abstract: 1292643 Ethylene/tetrafluoroethylene copolymers EI DU PONT DE NEMOURS & CO 30 Oct 1969 [19 Nov 1968 28 Aug 1969] 53333/69 Heading C3P [Also in Division B2] A copolymer which has a melt viscosity of at least 5 Î 10<SP>3</SP> poises at 300‹ C. measured at a shear stress of 0À455 kg./cm.<SP>2</SP> and which consists essentially of units derived from 40 to 60 mole per cent of ethylene, 60 to 40 mole per cent of tetrafluoroethylene, both based on the ethylene and tetrafluoroethylene, and a copolymerizable monomer which contains a terminal carboncarbon double bond and which provides the copolymer with side chains which contain at least two carbon atoms and which are free from acidic groups and salts, esters and anhydrides of acidic groups may be prepared by copolymerizing the monomers in appropriate proportions in a chlorofluorohydrocarbon solvent at a temperature of 30‹ to 85‹ C. in the presence of a polymerization initiator. In the examples ethylene, tetrafluoroethylene, perfluoropropyl perfluorovinyl ether, perfluoroethyl perfluorovinyl ether, perfluoroheptene-1, perfluorobutene-1, hexafluoropropene, perfluoro(methyl vinyl ether), isobutylene, vinyl acetate, 1,1,1- trifluoro - 2 - (trifluoromethyl) - 4 - penten - 2- ol, alkyl heptafluoroisopropyl ether, 2,2,3,3,3- pentafluoropropyl trifluorovinyl ether and nbutyl trifluorovinyl ether are copolymerized in the presence of 1,1,2-trichloro-1,2,2-trifluoroethane, cyclohexane and bisperfluoropropionyl peroxide. In Example X the terpolymer is melt blended with glass fibres which have been treated with gamma amino-propyl triethoxy silane coupling agent.
Patent GB-1246813-A (GB)
Title: THE PREPARATION OF d-TRANS-PYRETHRIC ACID
IPC: C07C62/16
Filed: 1968-11-11
Abstract: 1,246,813. d-Trans-pyrethic acid. ROUSSEL UCLAF. 11 Nov., 1968 [10 Nov., 1967], No. 53375/68. Heading C2C. d-Trans-pyrethic acid is prepared by reacting 3,3-dimethyl-2-(R). formyl - 1 - (R) - cyclopropane carboxylic acid with a Wittig reagent which in the presence of a strong basic agent yields a carbanion of partial formula The reagent is preferably a substituted phosphonate of in which R represents an alkyl (1-12 C) radical, and other phosphonium salts, phosphine oxides and phosphinic esters are mentioned. The reaction may be performed in an anhydrous organic solvent in the presence of a strong basic agent. Salts of the acid particularly alkali metal salts, the salt of L(+)- or D(-) - threo - 1 - p - nitrophenyl - 2 - N,N - dimethylaminopropane - 1,3 - diol or the salt of 1-quinine may be prepared.
Patent GB-1488395-A (GB)
Title: Pipe connector
IPC: F16L19/03
Filed: 1974-12-10
Abstract: 1488395 Pipe connector KUBOTA Ltd 10 Dec 1974 [10 Dec 1973 29 March 1974 30 April 1974 17 May 1974 30 May 1974 (2)] 53479/74 Heading F2G A pipe connector suitable for insulated pipes comprises a cylindrical member having a primary annular radial projection 140a disposed adjacent one end thereof, a second such projection 130b spaced therefrom and a radial flange 110 at an end remote from the primary projection; the member being disposed within a pipe and subjected to radial expansion such that the projections plastically deform the pipe to form respective annular recesses therein whereby the cylindrical member is secured to the pipe in sealing relationship. The primary projection may be formed as an integral enlargement of the cylindrical member, or as shown, may be formed as a toothed ring 140a received in a recess 140, with a similar recess 130a spaced therefrom receiving a packing member 130b to form the second projection. A third radial projection (not shown) may be included towards the flanged end of the member forming a second toothed ring-in-recess formation in which region a compensating bellows (not shown) may be included. Where the piping is of a composite nature, a supplementary connector in the form of a wedge (not shown) may be driven between the pipe and outer sheathing to enhance connection thereof. Pipe ends adapted with the cylindrical members described may be connected by the provision of butt joint connectors (Figs. 10a-10e, not shown) having bolted or screw threaded collar members for connecting the flanges of the members. A tool suitable for expanding the cylindrical member (Fig. 10, not shown) is described which comprises a cylindrical member having a series of circumferentially arranged longitudinal slits and an inner conical member which is movable axially under hydraulic pressure to expand the member via the slits provided.
Patent GB-1198633-A (GB)
Title: Phenyl-Sulphonated Benzimidazoles
Inventor: FICKEN GEOFFREY ERNEST
IPC: C07D235/06
Filed: 1967-11-24
Abstract: 1,198,633. Phenylsulphonyl - benzimidazoles. ILFORD Ltd. 24 Nov., 1967 [28 Nov., 1966], No. 53535/67. Heading C2C. The invention comprises benzimidazoles of the general formula wherein R is hydrogen or an alkyl, hydroxy alkyl, aryl or aralkyl group, Q is phenyl or phenyl substituted with at least one halogen, alkyl or alkoxy substituent and X is hydrogen or lower alkyl C 1-4 , which are prepared by reacting a compound of the formula wherein T is either a group -QSO 2  or a halogen atom where Q is as defined above, with ammonia or an amine of the formula RNH 2 , where R is as defined above, to replace the group T by NHR, reducing the -NO 2  group to an -NH 2  group, and effecting ring closure with an organic acid of the formula XCOOH where X is as defined above, or with an acid chloride or anhydride thereof. N - Ethyl - 2 - nitro - 4 - phenylsulphonylaniline is prepared by reacting 4-chloro-3- nitrophenyl phenyl sulphone with ethylamine. N - Ethyl - 2 - nitro - 4 - p - chlorophenylsulphonylaniline is prepared by reacting 4- chloro - 3 - nitrophenyl 4 - chlorophenylsulphone with ethylamine. 4 - (2,4 - Dichlorophenyl) - sulphonyl - 2 - nitrodiphenylamine is prepared by reacting 4 - chloro - 3 - nitro 2,4 - dichlorophenyl sulphone with aniline. N - (2 - Hydroxyethyl) - 2 - nitro - 4 - p - tolylsulphonylaniline is prepared by reacting ethylamine with 1,4-di-p-tolylsulphonyl-2-nitrobenzene. The corresponding diamino compounds are prepared by reducing the nitro group in the 2-position by iron and hydrochloric acid.
Patent GB-1491690-A (GB)
Title: Gear checking machines
IPC: G01M13/02
Filed: 1974-12-13
Abstract: 1491690 Checking gears electrically ILLINOIS TOOL WORKS Inc 13 Dec 1974 [17 Dec 1973]  53896/74 Addition to 1448201 Heading G1N [Also in Division G3] In an improvement in or modification of a gear checking machine disclosed and claimed in Specification 1448201, the means for rotating the table includes a second wheel 51 whose periphery makes frictional contact with the periphery of the base disc 26. The diameters of the first and second wheels 30, 51 are smaller than the diameter of disc 26. As described, a table 12 supporting the gear to be checked is rotated by frictional contact with the second wheel 51 which is driven by a stepping motor 42 from a pulse generator 38. An encoder means 28 supplies a signal comprising a series of pulses whose rate depends upon the rate of rotation of the table 12, the pulses being acted upon by a rate multiplier 62 to a variable extent depending on pre-selected factors for synchronizing movement of the sensing means with the rate of table rotation. The sensing means comprises a horizontally movable probe 16 for involute gear profiles and a vertically movable probe 20 for helical lead profiles, switch 36 deciding which of the probes 16, 20 is employed in any given profile check. In helical lead profile checking, an additional multiplier 60 is employed in order to increase the speed of probe 20. A recorder 80 may be employed for recording all movement of the sensing means. Probes 16, 20 may be pressure sensitive, pressure applied by gear profile to ends 16a, 20a controlling the movement of a magnetic slug of a variable differential transformer to give a signal which is a function of the magnitude of the pressure.
Patent GB-1370491-A (GB)
Title: Respiratory apparatus
IPC: A62B18/00
Filed: 1971-11-22
Abstract: 1370491 Respiratory filter DRAGERWERK AG 22 Nov 1971 [20 Nov 1970] 54206/71 Heading BIT [Also in Division A5] A respiratory apparatus comprises a disclike filter 6 held in a metal tube 4 secured to a housing 1, with the surfaces 12 of the housing facing the exposed end surfaces of the filter being obliquely inclined to form an antechamber 11a and after-chamber 11b to allow passage of air from an inlet (8) Fig. 2 (not shown) to a mouthpiece 13 for inhalation. The housing 1 comprises an oval outer wall (la) and a circular inner wall 5 which holds the filter, the walls forming crescent-shaped chambers in the region of the air inlet (8) and mouthpiece 13. The air inlet aperture (8) is closed by a plug 16 and the mouthpiece closed by a cap 17 which are connected together by a band 18 passing around the apparatus and connected at 20. The plug 16, cap 17 and band 18 may be of a one-piece construction. A nose piece is stored in the mouthpiece of the device.
Patent GB-1166828-A (GB)
Title: Improvements in Internal Combustion Engines
Inventor: WARE PETER GEORGE
IPC: F01L1/02
Filed: 1965-12-24
Abstract: 1,166,828. Valve gear. HUMBER Ltd. Dec.20, 1966 [Dec.24, 1965], No.54844/65. Heading F1B. In an I.C. engine, having valves operated by a crank-shaft-driven cam-shaft, an intermediate shaft 12 is connected to the crank-shaft by a positive driving connection (i.e. a connection without slip) and the cam-shaft and intermediate shaft each have a toothed wheel drivably connected by a toothed belt, the intermediate shaft being connected to engine ancilliaries. The crank-shaft drives the intermediate shaft through a chain. The fuel pump, distributer and oil pump are driven from the shaft 12 by skew gears. The water pump 20 and dynamo 21 are driven by fan belt 22. The engine valves may be operated directly by the cam-shaft or by push rods actuated by a high side-mounted cam-shaft. The belt, which may have an adjustable slack adjustment shoes, is a neoprene belt reinforced by twisted glass fibre strands, the teeth faces being impressed with woven nylon fabric during manufacture.
Patent GB-1404998-A (GB)
Title: Cyclometer registers
IPC: G06M1/26
Filed: 1972-11-29
Abstract: 1404998 Counters GENERAL ELECTRIC CO Ltd 27 Nov 1973 [29 Nov 1972] 55117/72 Heading G4D  A counter of the kind in which the lowest order digit wheel 1 rotates continuously and the second wheel (not shown) is stepped a member 4 is associated with the wheel 1 and has markings 6, 7 co-operating with those on the wheel to change the display quickly and the second wheel is stepped. As described member 14 is a transfer wheel driven by a weight which falls under gravity as the wheel 1 reaches zero to step on the second wheel. The zero on wheel 1 is cut away as shown and the markings 6, 7 respectively form a nine and a zero from the remaining portion (Fig. 2). Thus the lower wheel continues to display a nine up to the point of transfer when a zero rapidly appears. As an alternative where transfer occurs at the nine position on wheel 1 it is the nine which is cut away.
Patent GB-1103840-A (GB)
Title: Devices for use in the marking out of building sites
IPC: E04G21/18
Filed: 1965-12-30
Abstract: 1,103,840. Surveying apparatus. G.T. BLAKE. Dec. 14, 1966 [Dec. 30, 1965], No.55207/65. Heading G1F. A device for use in setting up a corner datum point on a building site and enabling the datum point to be re-established when desired comprises two arms 1, 2 pivotably connected together at one end by a bolt 3 with an upstanding spike 4 and having holes 5 and stops 6 at their other ends for engagement with fixing members 9 driven into the ground, the arrangement being such that when the pivot point of the arms, 1, 2 is in register with the datum point and the holes 5 are in engagement with the fixing members in the ground, the device can be removed from the fixing members, and be used subsequently to re-establish the datum point by once again engaging it with the members 9. Each fixing member 9 comprises a plate 11 through which a shank 10 extends, the plate having spikes on its undersurface for engagement in the ground. A thumbscrew 8 is provided adjacent each hole 5 so that the arms 1, 2 may be firmly secured to the shanks 10.
Patent GB-1392938-A (GB)
Title: Induction motors
Filed: 1971-11-29
Abstract: 1392938 Control of A.C. machines J E WHEATLEY and G ALLIN 23 Nov 1972 [29 Nov 1971] 55386/71 Heading H2J Speed control of a wound rotor induction motor is effected by controlling the rotor voltage at slip frequency using a half-wave thyristor inverter connected to the supply lines. As shown, the lines L1, L2, L3 are connected to the primary winding 2 and to the thyristors T1, T2, T3 forming a half-wave inverter. The common output of the inverter is connected through link 4 to diodes R1, R2, R3 which are connected to the phases of the secondary winding. The thyristors are fired in known manner by the pulse generating circuit PG. In the embodiment shown the secondary winding is star connected and has the star point SN connected to the neutral line of the supply. In other constructions where the secondary winding is delta connected a star connected arrangement of impedances comprising rectifiers, Fig. 2 (not shown), or inductors, Fig. 3 (not shown), defines a star point to be connected to the neutral line. The motor may be used in a feedback control arrangement sensitive to speed and torque.
Patent GB-1346319-A (GB)
Title: Artificial insemination of sows
IPC: A61D19/00
Filed: 1971-11-30
Abstract: 1346319 Preserving boar sperm H W SCHAUMANN 30 Nov 1971 [15 July 1971] 55483/71 Heading A2D A method of preserving boar sperm comprises collecting the ejaculate, inactivating said ejeculate, centrifuging and separating the sediment which is then diluted and frozen down to -180 to -200‹C. When required for use the frozen ejaculate is thawed by being placed in a diluent having a temperature of 40 to 50‹C, and then mixed with a solution which mobilizes the spermatozoa. The mobilized spermatozoa demonstrate effective forward motion for at least a four hour period at 39‹C and have a mobility of at least 50% and a keeping quality of at least four hours at 39‹C. The mobilized solution is then applied to the uterus. The inactivating solution may be an aqueous solution of glucose and a buffer system, preferably a solution containing glucose, sodium citrate, sodium bicarbonate, antibiotics, ethylene daimine tertraacetic acid and, potassium chloride. The solution used to dilute the sediment obtained from the centrifuged sperm may be an aqueous solution of fructose, egg-yolk, citric acid, glycerine and a buffer solution. The mobilizing solution preferably comprises sodium salts, a potassium salt, a buffer system and a sulfonamide. Freezing may be carried out by maintaining the ejaculate sediment and diluent at 5‹C for 1“ to 1¢ hours and then causing the sediment and diluent to drip on to dry ice so that pellets are formed and then surrounding the pellets by liquid nitrogen.
Patent GB-1247849-A (GB)
Title: Improvements in or relating to trailer vehicles
Inventor: ROBERTS RICHARD WALTER
IPC: B60P1/18
Filed: 1967-12-06
Abstract: 1,247,849. Carrying special loads. B. DIXON-BATE Ltd. 6 March, 1969 [6 Dec., 1967], No. 55536/67. Heading B7B. A trailer or semi-trailer especially for transporting cable drums has a chassis 23 supported at its rear end by wheels 36 mounted on triangular frames 33 pivotally movable by hydraulic jacks 35 about their pivots 34 on the chassis 23 to raise or lower it to the ground. A pair of frames 25 to support the axle of the cable drum or an open topped body may be mounted on the chassis.
Patent GB-1300285-A (GB)
Title: Spindles for textile machines
IPC: D01H7/22
Filed: 1970-11-25
Abstract: 1300285 Clutch-brake combinations; electromagnetic disc brakes SPINDELFABRIK SUSSEN SCHURR STAHLECKER & GRILL GmbH 25 Nov 1970 [1 Dec 1969] 56116/70 Heading F2E and F2L [Also in Division D1] A textile machine spindle of the kind having a conical clutch element 7 acted upon in its axial direction by a spring 6b whereby a loose wharve 4 which is adapted to be driven (e.g. by belt 4c) and is rotatable on antifriction bearing means 3 is connected to a wharve member 2a which is rigidly secured to the spindle shaft 2 so as to drive the latter, the clutch element 7 having two clutch surfaces at least one of which is conical, the loose wharve 4 and wharve member 2 having clutch surfaces corresponding to those of the clutch element 7 and adapted to engage frictionally therewith, is characterized by the fact that one clutch surface of the clutch element 7 engages upon a corresponding surface of an intermediate clutch member 5 which is axially slidable on the fixed wharve member 2a and non-rotatably connected thereto by a coupling ring 6. In the embodiment shown, the intermediate clutch member 5 is rigidly secured to a brake flange 5c so that application of power to an electromagnet 8c causes both to be pulled down together thus simultaneously disengaging the clutch and bringing the brake flange 5c into contact with a stationary brake ring 8d. The electromagnetic stopping mechanism may be replaced by a mechanical actuating means. Where an electromagnet 8c is used, it may be actuated by a thread guard (89, Fig. 6, not shown) that, when the thread breaks, closes a quick-acting relay with a potentiometer connected to the relay for controlling the course of action of the breaking force. The relay and potentiometer control unit for each spindle may be housed in recesses (81d2) in a multiple spindle rail (81d).
Patent GB-1241616-A (GB)
Title: A control device for a wheeled vehicle adaptive braking system
IPC: B60T8/84
Filed: 1969-11-18
Abstract: 1,241,616. Antiskid braking systems. BENDIX CORP. 18 Nov., 1969 [16 Dec., 1968], No. 56406/69. Heading F2F. In a brake antiskid system including a control channel for controlling the brake force simultaneously on a first and second vehicle wheel in response to a selected control signal and including means for generating signals proportional to the rotational velocities of the first and second wheels respectively, the control signal selection device comprises circuitry, responsive to the signals, for sorting the signals and causing a low voltage signal to be produced on one terminal and a high voltage signal on another terminal, a comparator responsive to the signals for generating a primary error signal whenever the ratio of the signals exceeds a predetermined value and means responsive to the error signal for sampling the terminals, the sample comprising the selected control signal. Wheel sensors 6, 10 generate pulses at a level related to wheel velocity and the pulses are converted to a D.C. voltage level, proportional to wheel speed, in counters 8, 12 to provide on terminals 8a, 12a D.C. voltage levels proportional to the rotational velocity of the left and right wheels respectively, these signals being sorted by circuits 14, 16 so that the low speed signal always appears on terminal 18 and the high speed signal on terminal 20. A comparator 24 such as a differential amplifier has applied thereto the left wheel voltage signal directly and the right wheel voltage signal attenuated by resistors 26, 28, another comparator 34 having applied directly thereto the voltage on terminal 12a and the attenuated voltage from terminal 8a and the outputs are fed through respective diodes 36, 38 to a power stage 40 which can energize a relay coil 22b and cause relay pole 22a to contact terminal 20 instead of terminal 18. When the wheel speeds are similar within predetermined limits, power stage 40 has no output and control channel 42 is connected to the low velocity terminal 18 but when they differ by a predetermined amount the channel 42 receives the high speed voltage signal.
Patent GB-1237004-A (GB)
Title: Polymer films
IPC: C08G73/10
Filed: 1968-12-03
Abstract: 1,237,004. Polyimide films. TORAY INDUSTRIES Inc. 3 Dec., 1968 [4 Dec., 1967; 15 March, 1968 (2)], No. 57205/68. Heading B5B. [Also in Division C3] A linear polymer having a repeating unit where R 1  is a tetravalent aromatic group with the valencies (1) ortho to (2) and (3) ortho to (4); R 2  is a C 3+  trivalent group with the valencies (5) and (7) on carbons adjacent to those carrying valencies (6) and (8) respectively; R 3  is a C 2+  bivalent group; X is -OR, -SR, -COOR or -NHR; and R is H or a C 1-6  hydrocarbon radical, is cast into a film and then heated first at a temperature between the primary and secondary transition points and thereafter at temperature between the secondary transition point and decomposition temperature to give a linear polymer having the repeat unit The film may be immersed in an acetic acidpyridine solution prior to the first heating which is preferably effected for 0À5 to 10 minutes at 100‹ to 250‹ C. with the film under tension. The second heating may be effected under reduced pressure or inert gas at 300‹ to 450‹ C. preferably till at least 20% cyclization is effected. The cast film may contain 20 to 50 wt. per cent residual solvent prior to the first heating. Numerous examples are given of polymerforming reactants, solvents, diluents and solubility-promoting inorganic salts and organic bases. The initial polymer preferably has an inherent viscosity of 0À3 to 3. Additives such as Al, Fe, Sn and Zn halides may be compounded with the film.
Patent GB-1328389-A (GB)
Title: High-pressure apparatus
IPC: B01J3/06
Filed: 1970-12-03
Abstract: 1328389 High-pressure apparatus ETABS RADIATOR 3 Dec 1970 [12 Dec 1969] 57422/70 Heading B1X High-pressure apparatus comprises a hydraulically-operated piston 1, 5 opposed by a fixed piston 10, a composite body (formed of a number of segments 6) surrounding the highpressure chamber 4 between the pistons, and at least two hollow annular bodies 12, 14 each filled with fluid at an independently controlled pressure. As the piston 1 is moved downwardly, the resultant radial forces more downwardly and their movement is compensated for by increasing the pressure in the lower hollow body 14 in relation to that in the higher body 12. Such compensation may be effected automatically under the control of means (not shown) which detect movement from the vertical of the segments 6. A ring 11 is ar-- ranged between the hollow bodies 12, 14, and the body 12 may contain a support ring 13. An outer cylinder 15 surrounds the bodies 12, 14 and is mounted within a housing 25. Within the composite body is a cylinder 7 and within that is an inner cylinder 3 and a support pressure chamber 2 filled with material which behaves as a liquid at high pressure. Highpressure chamber 4 may be of circular section as shown in the drawings or of polygonal section, in which case the innermost part of piston 5 and members 3 and 7 are shaped to correspond.