baber/WOPTO huggingface dataset:
Patent GB-851642-A (GB)
Title: A process for the dehydration of compounds containing one or hydroxy groups and at least two conjugated double bond
Filed: 1958-10-20
Abstract: Compounds containing a group of the formula :  <FORM:0851642/IV(b)/1> especially compounds of the vitamin A and carotene series, wherein R is hydrogen or a saturated or unsaturated aliphatic or cycloaliphatic radical which may be substituted, R1, R11 and R111 are hydrogen or alkyl, R1111 is alkyl and m, n and p are each 0 or 1 are made by dehydrating a compound of the formula <FORM:0851642/IV(b)/2> wherein the methylene group in the a -position to the carbon atom carrying the hydroxyl group is activated by a nitrile or carbonyl group or by a carbon-carbon double or triple bond, with an N-halogeno-amide or an N-halogeno-amide such as N-iodo-phthalimide or N-bromo or N-iodo-succinimide preferably in an amount of 0,1 to 5% by weight of the compound to be dehydrated, in an inert organic diluent at 30 DEG to 150 DEG C.  Examples describe the dehydration by this process of b -ionol-acetonitrile to b -ionylidene-acetonitrile, b -ionol-crotonic acid ethyl ester to b -ionylidene-crotonic acid ethyl ester, 9-(21:61:61-trimethyl cyclohexen-11yl) -3:7dimethyl-3-hydroxy-4:6:8-nonatriene-1-acid nitrile to Vitamin A acid nitrile and of 9-(21:61:61-trimethyl cyclohexen-11-yl) -3:7-dimethyl-3-hydroxy-4:6:8-nonatriene-1-acid methyl or ethyl ester to a Vitamin A acid ester.
Patent GB-891505-A (GB)
Title: Improvements in flexible tubular conduits or hoses
Inventor: HUMPHRIES FREDERICK RUSSELL
IPC: B29C57/00
Filed: 1959-10-05
Abstract: 891,505. Removing convolutions from plastic tubing. SUPERFLEXIT Ltd. Aug. 15, 1960 [Oct. 5, 1959], No. 33686/59. Class 87(2). A flexible tubular conduit or hose of plastic material such as polyvinyl chloride, polytetrafluoroethylene, or a polyamide, and having internal and external, convolutions is heat treated for erasing the convolutions at one or both ends by placing the or each end into the space between coaxial cylinders 2, 3 provided with electric heating elements. A thermostat 6 extends into the heating space for de-energizing the heating elements when the end of plastic tube 4 has softened sufficiently to erase the convolutions. On completion of the heat treatment the end of the tube 4 is immediately quenched in water or other cooling liquid. Alternatively the heat treatment may be effected by radio frequency heating. Specification 18,187/58 is referred to.
Patent GB-605588-A (GB)
Title: Improvements in and relating to plasticising, reclaiming and reworking of vulcanised rubber
IPC: C08J11/28
Filed: 1945-12-13
Abstract: Vulcanised rubber is reclaimed by heating to 140-170 DEG C., preferably 150-170 DEG C., in the presence of a restricted proportion of oxygen varying between a proportion equivalent to 0cc. to 20cc. of air per gram of gum rubber, the proportion of oxygen approaching the lower limit in the case of rubber substantially free from filling material and the upper limit in the case of rubber having a high content of reinforcing material, and in the presence of a polycyclic secondary amine, preferably one containing a naphthalene nucleus, the rubber being thereafter sheeted or mechanically treated in a roller mill with or without prior treatment in a refiner or other machine. The amine may be methyl, ethyl, phenyl or aldol naphthylamine or acetaldehyde ae-naphthylamine.  The process is not applicable to red vulcanised rubber containing a substantial proportion of antimony sulphide.
Patent GB-1112726-A (GB)
Title: Benzothioxanthene dyestuffs and processes for their manufacture
IPC: C09B57/14
Filed: 1966-07-27
Abstract: The invention comprises benzothioxanthene dyes of the formula <FORM:1112726/C4-C5/1> wherein R represents a hydrogen atom or a substituted or unsubtituted alkyl, cycloalkyl, aralkyl or aryl group, a heterocyclic ring or a hydroxy or amino group, R1 and R2 represent hydrogen or halogen atoms, or alkyl, aryl, alkoxy, CN, OH, carbalxoxy, carboxylic acyloxy or amino groups, R3 represents an alkoxy group which may be substituted, and R4 represents H or an alkoxy group which may be substituted. They may be obtained by (a) heating in presence of Cu or one of its salts the diazo salts of compounds of the formula <FORM:1112726/C4-C5/2> wherein R13 represents OH or an alkoxy group which may be substituted and R14 represents H, OH or an alkoxy group which may be substituted; (b) heating in the presence of Cu or one of its salts the diazo salts of 4-(21-aminophenylmercapto)-naphthalic acids or the corresponding acid anhydrides and condensing the benzothioxanthene derivatives thus obtained with compounds of the formula R-NH2 and when starting compounds in which R13 and/or R14 are OH groups are used, alkylating the dyes obtained.  Examples are given for the production of the dyes.  They are useful for dyeing synthetic materials, e.g. polyethylene terephthalate, polyamides or cellulose acetate.
Patent GB-605125-A (GB)
Title: Insulator for electric fences and nails for its attachment
IPC: G05B19/04
Filed: 1945-12-14
Abstract: 605,125. Insulators for electric fences. ANDERSEN, M. Dec. 14, 1945, No. 33940. Convention date, May 22, 1944. [Class 36] An insulator 1 for electric fences is fixed by means of a nail and has a rectangular hole 2 through it, and at one end a circular cavity 3, the insulator being rotated through 90 degrees after positioning on the nail. The nail has a head, similar in size to hole 2. When the nail is in position the insulator is passed over the nail, until the head of the nail is in the cavity 3. The insulator is held in position by the wire binding the conductor to the frame 4. The hole 2 and nail head need not be rectangular, but they must be longer in one direction than in the other.
Patent GB-869030-A (GB)
Title: Improvements in and relating to refrigerator cabinets
Inventor: SHONE KENNETH ARTHUR
IPC: F25D11/02
Filed: 1956-11-07
Abstract: 869,030. Refrigerating. ENGLISH ELECTRIC CO., Ltd. Nov. 6, 1957 [Nov. 7, 1956], No. 33973/56. Class 29 Means are provided to vary the effective thermal conductance between the evaporator passages 15 and the thermal control bulb 18, thus varying the temperature at which the evaporator operates. As shown bulb 18 is clamped to that part of the plate evaporator which is separated from the evaporator passages by a slct 20 along which a metallic bridge 21 can be slid and clamped in position to shunt the slot wholly or in part. The bulb may be mounted on the plate separated from the evaporator plate by insulating material adapted to be bridged.
Patent GB-389575-A (GB)
Title: Improvements in or connected with apparatus for the delivery of measured quantities of material of fluent character
IPC: G01F11/28
Filed: 1931-12-08
Abstract: 389,575. Delivering measured quantities of powdered &c. materials. JACKSON & CROCKATT, Ltd., J. G. and JACKSON, J. G., 64, Darnley Street, Glasgow. Dec. 8, 1931, No. 33990. [Class 106 (v).] One or more measuring chambers B extend downwardly from the base of a container A for the powdered or granular material, and a continuously rotating closure device D arranged to sweep the surface of the base has a segmental portion 18 adapted to close the inlet 19. The closure device is mounted on a vertical shaft C continuously rotated by gearing F and having a cam 15 adapted to open horizontally-moving shutters 7, 10 controlling the outlet of the measuring chamber when the portion 18 closes the inlet. Springs 13 tend to close the shutters 7, 10 and the cam 15 acts on a roller 9 on the shutter 7 to rock it about a pivot 8, a link 12 rocking the shutter 10 about a pivot 11. The measuring chamber comprises an upper portion 2 fixed to the container and telescoping within a lower portion 3 carried by a vertically movable frame G which also carries the outlet closure shutters and a funnel 30. To vary the capacity of the measuring chamber the frame G is raised or lowered by turning a screw 5 by a hand-wheel 6. The inlet closure means D has a conical part 16 and is secured to the shaft C by a nut 17. The leading edge of the segment 18 is bevelled. An air inlet valve 22 in the measuring chamber is opened by a lever 23 when the outlet shutters 7, 10 are opened. A stirring arm 31 rotates with the closure D.
Patent GB-937730-A (GB)
Title: Improvements in or relating to extrusion apparatus
IPC: B29C48/465
Filed: 1961-09-22
Abstract: 937,730. Extruding plastic materials. COMPAGNIE DES ATELIERS ET FORGES DE LA LOIRE. Sept. 22, 1961 [Sept. 23, 1960], No. 34015/61. Class 87(2). Plastic material fed through an inlet 18 into the casing 9 of an extrusion machine is milled between rotating generally conical rollers 5, 5a and extruded through a die orifice 10. Electric heating resistors 24 may be provided on the wall of the easing 9. Alternatively the rollers may have hyperboloidal surfaces. In another construction the material is milled between three generally conical rollers.
Patent GB-1321633-A (GB)
Title: Manufacture of windows and doors
IPC: E06B3/08
Filed: 1970-07-14
Abstract: 1321633 Window and door frames ALKONO AG 14 July 1970 [15 July 1969] 34106/70 Heading E1J A frame member comprising a hollow rectangular section body 1 with flanges 2 extending from the same or opposite sides of the body, the flanges being displaced outwardly from the respective side.
Patent GB-176478-A (GB)
Title: Improvements in carriers for supporting incandescent gas mantles
Filed: 1920-12-02
Abstract: 176,478. Carpenter, C. Dec. 2, 1920. Mantle carriers.-In an inverted gas-mantle carrier comprising a ring having supporting-lugs and provided with a strengthening ring or flange, the carrier ring or the strengthening ring is so perforated or cut away as to restrict or deflect as little as possible the ascent of the hot air and gases from the burner. In one form, as shown in Fig. 4, a carrier ring, having a groove 1 to receive a mantle and lugs 2, is provided with a ring 3, which may be provided with a short chimney 4. In a second form, as shown in Fig. 8, a flange 3 is provided with perforations 5. or it may be notched. The rim of the carrier ring may be provided with slits to allow for expansion.
Patent GB-1260359-A (GB)
Title: Method and apparatus for measuring dielectric properties of materials
Inventor: MATIS IMANT GUSTOVICH
IPC: G01R27/26
Filed: 1969-07-07
Abstract: 1,260,359. Measuring dielectric properties. INSTITUT MEKHANIZATSII POLIMEROV AKADEMII NAUK LATVIISKOI SSR. July 7, 1969 [July 5, 1968J, No.34239/69. Heading G1U. To determine a dielectric property of a material e.g. its dielectric constant, at least three electrodes are applied to the surface of the material being examined, these electrodes being connectible to two terminals between which a given difference of potential is maintained. The interconnections between the terminals and electrodes are varied to obtain a number of different interconnections, equal to the number of unknown parameters determining the capacitance between the terminals, one of these parameters being the dielectric property to be determined. The capcitance for each arrangement is measured, and the property determined by the simultaneous solution of the several equations relating the measured capacitances to the unknown parameters. In one embodiment Fig.1 (not shown) anarrangement of three electrodes is placed on the material surface, two of the electrodes being permanently connected to the higher and lower potential terminals respectively and the third being alternatively connectible to either by a two way switch. In a second embodiment, Fig. 2, the electrodes are arranged in three groups I, II, III, each containing three plate-like electrodes. By means of the switch 7, either the middle plate of each group may be set to a higher potential than the other two, or all the plates of the middle group may be set to a higher potential than all the plates of the other two groups. The capacitances between the terminals 4, 5 in the two configurations are measured, and the dielectric constant evaluated from these.
Patent GB-480906-A (GB)
Title: Process for the separation of solid materials by flotation
IPC: B03D1/02
Filed: 1936-12-14
Abstract: In separating coal &c. by flotation in an installation comprising several cells, the raw materials are first divided into two or more parts each of which is led into different cells according to the relative proportion of pure and waste products therein, a portion with a larger proportion of waste products being led into a cell near the outlet for refuse, and a portion with a larger proportion of pure products being led into a cell near the outlet for pure products; the water is supplied more particularly to the cell leading to the outlet for pure products so that the water in each cell is clearer than in a cell dealing with less purified products.
Patent GB-911218-A (GB)
Title: Gear honing machine
IPC: B23F19/05
Filed: 1960-04-25
Abstract: 911,218. Gear - finishing. NATIONAL BROACH & MACHINE CO. April 25, 1960 [June 1, 1959; June 8, 1959], No. 34412/61. Divided out of 911,216. Class 83 (3). A gear honing machine comprises means for applying a controlled force determining the pressure between the tool and work, the means comprising a cam rod 208 sliding in a bushing 214 and a cam follower 212 coupled to a support 124 to which the force is to be applied. The gear or tool may be driven. The machine is as described in Specification 911,216.
Patent GB-867248-A (GB)
Title: Improvements in sealed alkaline electric storage batteries
Inventor: STRAUSS HOWARD JEROME
IPC: H01M4/04
Filed: 1958-10-28
Abstract: 867,248. Batteries. ELECTRIC STORAGE BATTERY CO. Oct. 28, 1958, No. 34450/58. Drawings to Specification. Class 53. In order to prevent the evolution of hydrogen from the negative electrode of any cell that becomes overcharged in an alkaline battery having nickel and cadmium electrodes, a quantity of zinc oxide or hydroxide is dissolved in the electrolyte of each cell sufficient to deposit from 0.0001 to 0.001 gram of zinc on each square inch of the cadmium electrode. On charge the cadmium oxide on the negative electrode is reduced to metallic cadmium at about 1.3 volts. On overcharge hydrogen would be evolved at 1.55 volts but before this occurs zinc is deposited on the electrode at 1.5 volts, and the negative electrode acts temporarily as a zinc electrode from which hydrogen is evolved only when the voltage reaches 1.7. The charging current is therefore kept below this value.
Patent GB-870229-A (GB)
Title: Improvements in or relating to electrical circuits including transistors
Inventor: DUERDOTH WINSTON THEODORE
IPC: H03K7/08
Filed: 1958-10-28
Abstract: 870,229. Pulse modulation circuits; transistor pulse delaying and lengthening circuits. POSTMASTER GENERAL. Oct. 22, 1959 [Oct. 28, 1958], No. 34504/58. Classes 40(5) and 40(6) A circuit for converting amplitude modulated pulses into length modulated pulses comprises a transistor VT1, Fig. 1 having an inductor, e.g. the secondary winding of a transformer T1, connected between the base and emitter electrodes and to which the input amplitude modulated pulses are applied, the load impedance in the collector circuit being of such magnitude that the transistor assumes a bottomed condition for a period following the end of an input pulse, the period being dependent on the amplitude of the input pulse. Transistor VT1 is normally cut off, and remains so when an imput pulse is applied to transformer T1, the base electrode being driven positive. On cessation of the input pulse, current flows from emitter to base as shown by the arrow, and the transistor conducts, causing the collector voltage to drop so that the transistor is bottomed for as long as the base current is sufficiently large. In the bottomed condition the emitter- 'base voltage is substantially constant and thus the rate of decay of the current in the base circuit is also constant, Fig. 2, I min , being the base current at which the bottomed condition ceases and the transistor is again cut off. If the load impedance is a low pass filter, as shown in Fig. 1, having a series connected inductor L1 as its first element, the circuit operates as a demodulator. Rectifier W2 provides a low input terminating resistance for the filter when the transistor is cut off, and the filter delivers power into a resistor R having a value equal to the characteristic impedance of the filter. The input pulses, when unmodulated, produce D.C. output from the filter, which output may isolated from resistor R by a capacitor C2 and may be used to operate a relay RL to indicate the presence of an input pulse.
Patent GB-284581-A (GB)
Title: Improvements in apparatus for extinguishing fire
IPC: A62C99/00
Filed: 1927-09-07
Abstract: 284,581. Marshall, C. F. B., and Wright & Partners, Ltd., F. Sept. 7, 1927. Portable pressure reservoirs. - A fire-extinguisher comprising a container for fluid under pressure sealed by a diaphragm adapted to be erupted by a sliding spring- withdrawn punch, is provided with a punch h having an oblique end n and a reduced portion o. By this arrangement, a portion of the diaphragm is cut and deflected to one side without being completely severed from the diaphragm, and an annular space is left round the reduced portion for escape of the fluid should the punch become jammed in forward position. In a modification, the punch is hollow and radially perforated at the reduced portion. Specification 286,771 is referred to.
Patent GB-1151583-A (GB)
Title: Baling Press
IPC: B30B9/30
Filed: 1966-08-03
Abstract: 1,151,583. Baling presses. BELOIT CORP. 3 Aug., 1966 [27 Sept., 1965], No. 34788/66. Heading B5F. A press for baling paper pulp comprises at least one receptacle 29, means for controlling the delivery of material to the receptacle, a piston 111 for tamping the material in the receptacle, and a piston 83 for compressing the material to form a bale. As shown, the press comprises four square-section receptacles 29, 30, 31, (32) mounted on a turn-table 28 for rotation about a stationary shaft 95 by means of a motor (75), reduction gearing (76) and a gear 101. Material is delivered to the receptacles in turn by a loading shoot 40 having two inlets 43, 44. Doors 108, 109 for the inlets 43, 44 are operated by hydraulic cylinders 48, 52. During filling and tamping the base 113<SP>1</SP> of the receptacle is supported by an hydraulic piston 39. The receptacles 29 . . (32) have reinforcing ribs 80, 81, 85 . . . 90, 92 . . . 94. Indexing means for the turn-table 28 comprises a stop plate 105 engageable in notches, as 107, in the turn-table, by means of an hydraulic cylinder 106. At the compressing station the hydraulic piston 83 lifts the movable base 113 of the receptacle and compresses the material against a stationary wall 114 secured to an upper beam 25. At the ejecting station the bale is lifted by an hydraulically energized lifter head 72 until level with a plate 33 and then ejected by an hydraulic ejector (73), Fig. 4 (not shown). When the turn-table is brought to rest in each of the four indexed positions it is raised by means of hydraulic cylinders 34, 38, 61, (62), (Fig. 2, not shown) so as to seal the upper openings of the receptacles against the lower surface of the beam 25.
Patent GB-1322087-A (GB)
Title: Spectrum analysis systems using optical correlation techniques particularly useful in pulse modulated doppler radar systems
IPC: G01S13/58
Filed: 1971-07-23
Abstract: 1322087 Measuring speed and distance THOMSON-CSF 23 July 1971 [23 July 1970] 34805/71 Heading G4H [Also in Divisions G1 and H4] A signal S R , Fig. 1, is recognized as having a frequency corresponding to one of a set of m frequencies f i  by the following method: (a) the signal is converted to an intensity modulated light beam by a photo-electric light source 1; (b) the light is focused as a thin vertical strip on to a column of m photo-cells 4.1,... 4.m; (c) interposed between the light source 1 and the photocells 4 is a uniformly moving strip 2 carrying m tracks 2.1,...2.m, associated with the m photocells 4 and each corresponding to one of the m frequencies f i ; (d) each track, for example track 2.i corresponding to frequency f i  comprises a uniform series of alternate transparent and opaque regions so spaced in relation to the speed of displacement of the strip 2 that consecutive pairs of transparent/opaque regions pass through the light beam at a frequency of f i -#F, so that as a consequence if the signal S R  has a frequency of f i  then the photo-cell 4.i associated with the track 2.i receives a modulated light signal which includes a frequency component of frequency #F; (e) the output of each photo-cell 4 is applied to identical narrow pass band filters 5 centred on the frequency #F so that the filter having an output above a level preset by threshold circuits 7 is indicative of the frequency of the unknown signal S R  In the preferred embodiment the system forms part of a Doppler radar. Each received echo pulse 13, Fig. 4, is applied via one of p range gates 14.1,... 14.p, opened sequentially in the usual way, to one of p light sources 16.1, ... 16.p, each associated with a column of m photo-cells 19 corresponding to the photo-cells 4 of Fig. 1. Each of the pm photo-cells is associated with identical filters 20 and threshold circuits 22 so that the threshold circuit that produces an output indicates the range and speed of the target.
Patent GB-1362776-A (GB)
Title: Immunological reagent
IPC: G01N33/86
Filed: 1970-07-17
Abstract: 1362776 Determination of human fibrinogen degradation products WELLCOME FOUNDATION Ltd 30 June 1971 [17 July 1970] 34899/70 Heading G1B [ Also in Division A5] An immunological reagent for use in the detection of a human fibrinogen degradation products (FDP) comprises inert adsorbent particles sensitized with antibodies to the FDP originating from a mammal other than man. The adsorbent particles may be of polystyrene (exemplified), silica, bentonite, charcoal, alumina, kaolin or polyacrylic acid or may be bacteria or red blood cells (exemplified), and may have particle size 0.01 to 1 micron. The antibody source may be rabbit, horse, sheep, goat, guinea pig, rat. The reagent suspension may contain between 0.2 and 5% particles and optionally contains serum albumin as stabilizer. A test kit comprises four vessels containing (1) the reagent in aqueous suspension, (2) buffer, (3) control sample (4) a tube containing thrombin and a protease inhibitor, for use in collecting the blood sample to be tested, and optionally also a mixing rod, droppers and a mixing plate with an impermeable surface, such as a slide, tile, plate, test tube inner wall, well or card, the surface being coloured, or transparent for use against a coloured surface.
Patent GB-394329-A (GB)
Title: Improvements relating to mechanism for gas and similar meters and the like
IPC: G07F15/02
Filed: 1931-12-16
Abstract: 394,329. Prepayment mechanism for meters. UNITED GAS INDUSTRIES, Ltd., 51, Lincoln's Inn Fields, SMITH, E. W., 186, Kennington Park Road, and CHARLES, A., Meter Works, Rowan Road, Streatham Vale, all in London. Dec. 16, 1931, No. 34903. [Class 27.] In prepayment meter mechanism for use with coins of different values, e.g. shillings and pennies, and involving, as described in Specification 392,530, the use of two measuring wheels a, b, both of which are operated when a shilling is inserted, and the wheel a only when a penny is inserted, a ratchet or free-wheel device c is interposed between the respective measuring wheels. The wheel a is carried by a spindle a<1> and the wheel b by a sleeve b<1> surrounding the spindle. The ratchet wheel c is carried by a sleeve c<1> turning with the spindle and is engaged by pawls mounted on the wheel b so that, when this is rotated after the insertion of a shilling, the wheel a is also rotated.