baber/WOPTO huggingface dataset:
Patent GB-1094375-A (GB)
Title: A method and apparatus for treating highly viscous substances
IPC: B02C4/04
Filed: 1964-12-04
Abstract: 1,094,375. Homogenizing viscous materials. ONDERZOEKINGSINSTITUUT R E S EARCH, N.V. Dec. 4, 1964 [Dec. 23, 1963], No. 49497/64. Heading B1C. In a method and apparatus for making a highly viscous substance there are two counter-rotating rollers 1, 2 with bars, wires or teeth extending into the nip from the side into which the substance is fed; as shown there is a comb-like member having teeth 8. The viscous substance forms a rolling bank 13 and upstanding ribs 14 round the rollers which increase the surface area by 200-300 per cent. Rib formation is facilitated by making the teeth 8 and supporting tubes 9, 10 hollow and open to the atmosphere at both ends. Material is supplied at one end 12 of the rollers and is slowly transported to the other end by the curved shape of the teeth 8; or the teeth may be reciprocated parallel to the roller axes. The apparatus may be enclosed in a chamber which may be evacuated to promote de-gassing, or which may contain an atmosphere or bath of a less viscous substance to be emulsified with the viscous substance. The rollers may be heated or cooled. The clearance in the nip is preferably 2-50 mm, and the distance between the teeth 5-100 mm. The apparatus may be used to increase the chain length of a linear polycondensate of ethylene terephthalate by evaporating glycol from the reaction mixture.
Patent GB-1381176-A (GB)
Title: Threaded fastener assembly
IPC: F16B39/00
Filed: 1972-10-28
Abstract: 1381176 Locking threaded fasteners V E TIKHONOV J A KITRINSKY J V CHIRKUNOV and N S PESTRETSOV 28 Oct 1972 49810/72 Heading F2H To lock a nut 19 to a bolt 3, the bolt houses in an internal bore 4 a spring-loaded retainer pin 5 which bears teeth 28 projecting through axial grooves 10 in the wall of the bolt and engaging the threads 22 of the nut, the nut, in addition to its internal threads, being formed with a series of axial grooves 29 which the teeth 28 can enter. Both the pin and the bolt have slotted end faces 13, 14 and when engaged by a screwdriver so that the bottoms of the slots 25, 9 lie flush with one another the pin 5 and thus the teeth 28 are moved against the action of the spring 7 and relative to the bolt 3 into a position in which the teeth 28 form a continuation of the bolt threads, and hence the bolt can be rotated into the nut in conventional fashion to join two members together, the nut 19 being fastened to one member, e.g. by riveting and preferably a bush 1 being fastened to the other. On removal of the screwdriver the pin 5 is moved back by the spring so that the teeth 28 enter the grooves 29 in the nut thus interfering with the nut threads 22 and preventing rotation and unfastening of the bolt. Other embodiments having different nut and bolt constructions are described.
Patent GB-1025986-A (GB)
Title: Precision formed metal parts and method of making same
Inventor: BEDFORD WILLIAM AUGUSTUS
IPC: H04M1/23
Filed: 1964-12-09
Abstract: 1,025,986. Making switch components; bending; forging. REPUBLIC INDUSTRIAL CORPORATION. Dec. 9, 1964, No. 50090/64 Headings B3A, B3E and B3H. Switch actuating bars for a push-button operated automatic telephone are made from a metal strip S which is fed to a die block 60 between closely fitting channel side walls 61. The strip S is registered at each working station by pilot holes 63, which are made by punches 62, and dies (not shown) mounted in the block 60 coact with the punches. Punches 64, 68 notch one edge of the strip and form apertures adjacent opposite edges to form the zones 16a, 17a. Bearing surfaces are formed by plier-like dies 23, 24 (see also Figs. 8, 13, not shown) which form ellipsoidal shapes (Fig. 13) and are finally formed by dies 51, 52 (Figs. 11, 14, not shown) to cylindrical configuration. At succeeding working stations additional punches remove material from the strip to form actuating fingers until the entire blank has been blanked out except for connecting webs between the holes 63. At a further station bending dies bend the fingers 18 (Fig. 15, not shown) and at a final station the connecting webs are severed. In an alternative method, flat blanks are formed initially (Figs. 1A to 1D, not shown) and the bearing surfaces are forged as described above but the blanks are transferred to a second die block and die assembly for the final forging operation (Figs. 7-14, not shown). In a final operation, the fingers 18 are bent to the required angles.
Patent GB-1094875-A (GB)
Title: Method of producing ª•-perillalcohol
IPC: C07C47/44
Filed: 1964-12-09
Abstract: l-Perillalcohol (II1) is prepared by heating at 150-300 DEG  C. either (a) the product of oxidizing b -pinene at 30-100 DEG  C. in presence of Pb(OOC.CnH2n+ 1)4 and CnH2nt 1COOH, or (b) any of the acylates (I, III or IV) with a fatty acid metal salt, <F\1> <F\2> <F\3> <F\4> n being 0-18.  The said acylates, as well as l-perillyl acylate, are formed when Pb3O4 is added to a solution of b -pinene in CnH2nt 1 at 30-100 DEG  C.
Patent GB-991074-A (GB)
Title: New 5-nitrofuran derivatives
IPC: C07D307/74
Filed: 1963-12-19
Abstract: The invention comprises compounds of the formula <FORM:0991074/C2/1> in which R is a hydrogen atom or an alkyl or acyl group and A is the residue of a monosubstituted amino or monosubstituted hydrazino group, with the proviso that A is not an oxime or O-acyl-oxime group; and the tautomers thereof.  The compounds are prepared by reacting an appropriate amine or hydrazine with an imino compound of the formula <FORM:0991074/C2/2> in which R is as defined above and X is a chlorine atom or a C1- 3 alkoxy group.  Starting materials of formula II in which X is a C1- 3 alkoxy group may be prepared by reacting 5 - nitro - 2 - furyl cyanide with the appropriate alcohol in the presence of a hydrogen halide.  5 - Nitro - 2 - furan - N - acetylimino - carboxylic acid ethyl ester is prepared by reacting 5 - nitro - 2 - furan - imidocarboxylic acid ethyl ester with acetyl chloride.  5 - Nitro - 2 - furan - methylimido - carboxylic acid ethyl ester is prepared by reacting methylamine with 5-nitro-2-furoyl chloride and heating the resulting 5 - nitro - 2 - furan - carboxylic acid - N - methylamide with phosphorus pentachloride.
Patent GB-1143146-A (GB)
Title: Seamless breast pads and blanks and method of making the same
Inventor: HOWARD JACK EDWARD
IPC: A41C3/14
Filed: 1967-11-07
Abstract: 1,143,146. Breast pads. UNITED CELLULAR PRODUCTS CORP. 7 Nov., 1967, No. 50590/67. Heading A3V. A method of making a breast pad includes making a radial cut in each of two circular blanks (which may be formed by splitting a blank of non-woven fibrous material), coating the blanks with a thermoplastic resin bonding agent of acrylic or p.v.c. type, twisting each blank to form a cone 15 or 16 in which the edges of the cut are disposed at 180 degrees to each other so that half the cone is of single and half of double thickness material and superimposing one cone on the other to form a composite blank having three thicknesses of material across substantially its entire area. The composite blank is moulded by heat and pressure to the desired shape, the bonding agent which softens during the moulding hardening subsequently to fix the shape. The radial cuts form bevelled edges 13a and b, 14a and b which may be carded after the cones have been formed to avoid the formation of ridges.
Patent GB-1243278-A (GB)
Title: Bulk erasers for magnetic recording media
IPC: G11B5/024
Filed: 1969-10-16
Abstract: 1,243,278. Magnetic bulk erasers. SONY CORP. 16 Oct., 1969 [16 Oct., 1968], No. 50838/69. Heading G5R. A bulk eraser for a reel of magnetic recording medium includes a housing 1 having a passage 2 through which, the reel is passed, and permanent magnets 7, 8 adjacent the passage for producing a magnetic field C oblique to the direction A of movement of the reel. through the passage. Each side of the passage has two: permanent magnets 7, 8 with faces of opposite polarity, or three or more magnets of alternating polarity may be located on one or both sides of the passage. A case for a reel, or a cassette 35, is placed on a guide 12 formed inside the entrance door 10 and if frangible members 40a, indicating that erasure is permissible, are present, lugs 21 are deflected D to release tabs 24, 25 thereby allowing a slide 45 to lower a stop 27 and permit the case or cassette to be inserted. The cassette is withdrawn at the other end of the passage through magnetic doors normally held closed by the magnets to prevent insertion from that end. The reel is then turned over and re-inserted to effect complete erasure, a keeper (Fig. 10, not shown) being attached to the cassette to prevent rotation of the reels.
Patent GB-1311370-A (GB)
Title: Process for preparing tetrafluoroethylene fluorovinyl ether copolymers
IPC: C08F14/00
Filed: 1970-10-27
Abstract: 1311370 Fluorine-containing copolymers E I DU PONT DE NEMOURS & CO 27 Oct 1970 [27 Oct 1969] 51070/70 Heading C3P Copolymers of tetrafluoroethylene and a fluorovinyl ether are formed in aqueous emulsion containing a buffer, dispersing agent and water-soluble initiator at 50-100 C. and superatmospheric pressure in the presence of a gaseous chain transfer agent containing hydrogen and having a partial pressure of 1-500 p.s.i.g.; specified are hydrogen, methane and ethane. The products have a per cent swelling (as defined) of 25 or less and a melt viscosity of 0À5- 500 x 10<SP>4</SP> poises. Exemplified ether is perfluoropropylvinyl ether and also present in the emulsion may be fluorinated and chlorinated methane or ethane.
Patent GB-1401699-A (GB)
Title: Method and apparatus for measuring  a measurable quantity using  electro-magnetic radiation
IPC: H04B10/00
Filed: 1972-11-06
Abstract: 1401699 Photo-electric measurement K DRYCZYNSKI 6 Nov 1972 [4 Nov 1971] 51074/72 Heading G1A In a photo-electric measuring arrangement in which the measurement is effected by applying intensity modulated light to the object to be investigated and separating a component of the same frequency from the detector output, the working, point of the photo-detector is maintained constant by applying an auxiliary source of light to the photo-detector and controlling the intensity of the auxiliary light by way of the direct voltage component in the photo-detector output to keep ambient and auxiliary light incident thereon constant. The auxiliary light may be applied directly or indirectly, and the variation may be by source variation or by control of an iris shutter or a wedge in the light path. Phase sensitive rectification is used in the main measuring system using pulses developed synchronously with chopping by electromagnetic or photo-electric means or in the case where the source e.g. a light emitting diode is energized by an oscillator the oscillator is coupled to the rectifier. The main measuring system may use light guides and the value may be indicated or used for control. The system may be used for maintaining a desired distance between workpieces or rollers which may obstruct the light or for the investigation of surface properties.
Patent GB-1080296-A (GB)
Title: Improvements in or relating to silicone rubber
Filed: 1964-12-16
Abstract: A composition which is curable to an organopolysiloxane elastomer comprises:  (1)  a liquid silanol chain stopped polydiorganosiloxane, of the formula HO((R)2SiO)nH, where n is at least 10, (2) an organotrichlorosilane and (3) an amine having an ionization constant of from 10-12 to 10-5.  The organic groups of (1) and (2) are monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals, or cyanoalkyl radicals.  Examples of (1), (2), and (3) are polydimethylsiloxane, methyltrichlorosilane and pyridine respectively.  The above composition is stable for long periods on exposure to atmospheric moisture.  However, on addition of an amide of formula R1CONR11R1111 wherein R1 and R11 are hydrogen, monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals or cyanoalkyl radicals, R111 is an alkyl radical or R11 and R111 taken together represent a divalent alkylene radical, the compositions cure within 24 hours to a tough silicone rubber. A suitable amide is dimethylformamide. A composition according to the invention may contain 100 parts by weight (1), 1 to 5 parts of silane (2) and 0.1 to 0.5 parts of amine (3); it may also contain 0.5 to 3 parts of amide.  The compositions may also contain a minor amount (e.g. 0.01 to 0.1 parts by weight per 100 parts of (1)) of a carboxylic acid salt of a metal ranging from Pb to Mn in the electromotive series, especially dibutyl tin dilaurate. An organic solvent and/or conventional fillers may be present.
Patent GB-1392108-A (GB)
Title: Post-deflection focussing type colour picture tubes
IPC: H01J31/20
Filed: 1972-11-08
Abstract: 1392108 Colour television tubes HITACHI Ltd 8 Nov 1972 [8 Nov 1971] 51475/72 Heading H1D In a post-deflection focusing colour television tube a colour selection electrode 6 is supported by a member 7 through insulators 8 and the member 7 is held at a higher potential than electrode 6 to collect secondary and reflected electrons. A shield 15 can be connected to or insulated from member 7.
Patent GB-1085258-A (GB)
Title: Improvements in and relating to rotary fluid machines
IPC: F04C2/10
Filed: 1964-12-21
Abstract: 1,085,258. Rotary fluid-pumps and motors. G. SCHIMKAT. Dec. 21, 1964, No.51839/64. Heading F1F. A rotary fluid-pump, or motor, of the internallymeshing gear type comprises a rotor 2 having a plurality of axially-orientated teeth 1 that pass through openings 13a in a wear-plate or so-called valve-plate 13 and mesh with peripheral notches 19 in a rotor 8 lodged within a recess defined by two intersecting annular bores 6, 6a in a housing member or stator 4, said bores being cut to form a crescent-shaped wall 7 so that in operation fluid e.g. oil, is displaced from an inlet 20 to an outlet 18 by the rotors 2, 8. The wear-plate 13 is biased towards a surface 4a on the stator by springs (39), Fig. 5 (not shown), lodged in the rotor 2 and initially by pressure exerted on its face adjacent the rotor 2 due to leakage of fluid into a cavity 15, which is within a cover 5 for the stator 4, said leakage being effected through a gap between the surface 4a and the wear-plate. Surplus fluid in the cavity 15 escapes therefrom through bearings 16, 17 for the rotor 2 and passages 28, 29 adjacent thereto so that forces due to fluid pressures acting upon both sides of the wearplate 13 are ultimately rendered substantially in equilibrium to prevent metal-to-metal contact between the plate and the surface 4a. Displacement of the wear-plate 13 away from the surface 4a is restricted by a bush 14 attached to the stator 4; and the distribution of pressure on the face of the wear-plate adjacent the surface 4a may be improved by two arcuate grooves (33, 34), Fig. 3 (not shown), which are formed in said surface and connected by passages (33a, 34a) in the stator to the high-pressure and low-pressure sides of the pump, respectively, whereby tilting of the wear-plate is prevented. Alternatively, a single arcuate-groove 22 may be provided in said surface on the low-pressure side thereof, which groove is connected to the outlet 18 by a passage (25), Fig. 5 (not shown), within the stator 4. The output of the pump can be varied by appropriate axial displacement of the rotor 2 relative to the rotor 8 with the assistance of or in opposition to the action of a compression spring 11 engaging with the splined end of a driving shaft 12, which end engages with splines 3, 3a on the rotor 2, displacement of the rotor 2 being effected by an arcuate member 9 that is lodged in the bore 6 adjacent the wall 7 and is axially-movable by a pinion 10 meshing with a rack 9a on said member. Axial displacement of the rotor 2 is limited by a thrust-ring 30 on the driving shaft 12. The member 9 and an associated cover 31 may be dispensed with so that the output of the pump is invariable.
Patent GB-1501948-A (GB)
Title: Aromatic copolyamides shaped articles therefrom and processes for producing said copolyamides and shaped articles
IPC: C08G69/32
Filed: 1975-12-18
Abstract: 1501948 Aromatic copolyamide fibres TEIJIN Ltd 18 Dec 1975 [27 Dec 1974 20 May 1975 (2)] 51844/75 Heading B5B [Also in Division C3] Fibre- or film-forming aromatic copolyamides comprise diamine units (1A) and (IB) -HN-Ar<SP>1</SP>-NH- and dicarboxylic acid units (2) -OC-Ar 2 -CO-, the total number of moles (1A)+(1B) being substantially equal to (2) with (1A) providing 7À5 to 40 mol per cent of the total recurring units. In the formulas Y 1  (independently in each unit) is -O-, -S-, -SO 2 -, -CO-, -NH-, -CH 2 -, or -CMe 2 -; Ar 1  and Ar 2  have their bonds coaxial or parallel and are phenylene, naphthalene or and Y 2  is as defined for Y 1 . They may be prepared by reacting a mixture of appropriate diamines or their hydrohalides with the diacid halide, preferably at -20 to 100 in an organic solvent in the presence of an acid acceptor and a halide of hydrogen or a Group I or II metal. There are 37 specific examples. Such polymers form solutions which can be readily wet spun and form fibres of high Youngs' modulus (area 400 g./d.) and tensile strength (over 15 g./d.). Reference is made to Specification 1,407,615. Wet spinning.-Processes for spinning the above polymers are also extensively described and claimed, such claims being directed to wetspinning into an aqueous coagulant bath characterized by (a) the use of various specific amide solvents to form the dope, (b) the presence of HHa or a Group I or II halide; (c) the use of a coagulant bath containing an inorganic salt in a concentration (C) related to the halide content of the dope (a) (bath mol/l.) and the mol per cent (x) of units (1A) in the polymer by the relation C # 0À1x+2À9a; and stretching the as-spun fibres at at least 1 : 3, e.g. 1 : 4 to 1 : 20. A film was also formed by casting followed by stretching.
Patent GB-1024520-A (GB)
Title: Clutch construction
Inventor: WIGGINS FREDERICK BERNARD
IPC: F16D25/06
Filed: 1964-12-21
Abstract: 1,024,520. Friction clutches. CHRYSLEE CORPORATION. Dec. 21, 1964, No. 51939/64 Heading F2C. A multi-plate friction clutch is engaged by an annular piston 35 acting through a Bellevill washer 34 on a presser plate 33, at least th initial clutch engaging movement being oppose, by spring means. As shown in Fig. 3, th periphery 34c of the washer engages a space ring 39 bearing against a wavy spring ring 4( Initial movement of the piston to the right t engage the clutch shifts the Belleville washe bodily axially, compressing the spring ring 4 until the position shown is reached in which tl clutch is lightly engaged, and whereafter fu ther movement of the piston flexes the Belleville washer 34 over centre, so that the end 34c is pressed against the step 52 of the clutch drum by the spring 40. A fulcrum is now provided for the Belleville washer and the force of the piston is applied with lever multiplication to the presser plate. In the embodiment of Fig. 8 (not shown), engaging movement of the presser plate is opposed by coil springs 70 and movement of the piston is opposed by a coil spring 71.
Patent GB-1115239-A (GB)
Title: Process for the preparation of methacrylic acid
IPC: C07C51/377
Filed: 1966-11-21
Abstract: Methacrylic acid is prepared from a mixture containing a -hydroxyisobutyric acid and derivatives, which is formed by oxidation of isobutylene with dinitrogen tetroxide in the presence of nitric acid, by removing free nitric acid, heating the residue dissolved in acetic acid at at least 160 DEG  C., in a polar organic reaction medium and continuously removing the resulting methacrylic acid. Acetic acid (95-100%) is preferred and the polar medium may be stearic, naphthalic, phthalic, succinic, glutaric and maleic acids, anhydrides, esters and amides; polyethylene oxide derivatives and high-boiling ethers.  Catalysts such as alkali and alkaline earth metal oxides, hydroxides, carboxylates, alcoholates, amines, phosphines and salts may also be present.
Patent GB-1479870-A (GB)
Title: Guide for a moving belt
IPC: B65H23/02
Filed: 1975-12-20
Abstract: 1479870 Transverse web registering RIGGS & LOMBARD Inc 20 Dec 1975 52272/75 Heading B8R A transverse web registering device comprises brackets 16 mounted adjacent opposite longitudinal edges of a web 12 moving along a rectilinear path, the brackets supporting a pair of rollers 20, 22, which engage the longitudinal edges with their peripheral grooves 58, 60, and, a guide roller 14 whose periphery is tangential to the rectilinear path and whose axis extends at right angles thereto. The guide roller 14 is also adjustable axially.
Patent GB-1424255-A (GB)
Title: Energy-resolving detector material
IPC: C03C4/00
Filed: 1973-11-12
Abstract: 1424255 Metaphosphate glass ERNST LEITZ GmbH 12 Nov 1973 [19 Dec 1972] 52354/73 Heading C1M A glass composition comprises 20-60% by weight metaphosphoric acid, 30-80% by weight aluminium metaphosphate, and 2-30% by weight zinc oxide, and boron trioxide and/or silicon dioxide in an amount up to 10 weight per cent, the balance if any consisting of other compatible constituents and ingredients. Apparatus for detecting high energy particles includes a detector device formed from the above material.
Patent GB-1398090-A (GB)
Title: Internal combustion engine ingition timing devices
IPC: H01T13/60
Filed: 1971-11-12
Abstract: 1398090 Testing I C engines BRITISH LEYLAND MOTOR CORP Ltd 1 Nov 1972 [12 Nov 1971] 52551/71 HeadingGlU The invention provides method and apparatus for measuring ignition timing of a spark ignition internal combustion engine by providing first signals corresponding to the instant that the rotation of the engine corresponds to an arbitrary datum angle, second signals corresponding to the instant of the ignition spark and sensing and displaying the phase difference between the first and second signals. NAND gates 11, 12 are crosscoupled to provide a bi-stable circuit whose output 13 is connected to the positive supply 15 via a meter 14 and resistance 16. Pulses occurring at 45 degrees before T.D.C. are derived from a conventional pick-up and fed via pulse shaping transistor 19 to the first input 17 of the bi-stable. The output 13 changes, causing current to be drawn through the meter. Ignition pulses are detected by a toroidal coil wound around the low tension lead of the ignition coil and are passed via transistor 24 to the second input 22 of the bi-stable causing it to reset. The current pulses through the meter are averaged by the meter inertia to provide a measure of the timing which is displayed as an angle relative to T.D.C. After the input pulse from transistor 19, diode 33 becomes reverse biased and capacitor 31 begins to charge. Transistor 34 thus begins to conduct reducing the voltage or bi-stable 30 input. If no ignition pulse is received from transistor 24, the bi-stable is automatically reset, before the next reference signal input pulse.