baber/WOPTO huggingface dataset:
Patent GB-452668-A (GB)
Title: Improvements relating to electric motors
IPC: H02K7/065
Filed: 1935-03-06
Abstract: 452,668. Reciprocating motors. KINGSWAY ELECTRICALS, Ltd., and OSMAND, G., 3, Dane Street, High Holborn, London. March 6, 1935, No. 7069. [Class 35] A reciprocating motor of the type wherein the armature imparts impulses in rapid succession to a rotary member has the parts so arranged tha the contact piece car ried by the armature can act on either side of the axis of rotation for changing the direction of rotation. In the form shown, the electromagnet can be swung about an axis passing through the limb a of its core so that the rubber tip f on the extension of the armature d can engage the disc g on either side of the worm shaft h according to the direction of rotation required.
Patent GB-1304708-A (GB)
IPC: C07D243/16
Filed: 1970-06-30
Abstract: 1304708 Benzophenones F HOFFMANNLA ROCHE & CO AG 30 June 1970 [15 April 1970 13 May 1970] 7114/71 Divided out of 1304707 Heading C2C Compounds of the general formula (B=CH 2 , CO; R 1,3,4  = H, C 1-7  alkyl; R 2 =H, halogen) are prepared by protecting the nitrogen atom in a compound of the formula oxidizing the CH 2  group to CO, removing the protecting group and introducing the N- substituent.
Patent GB-737022-A (GB)
Title: Thermoplastic materials and their preparation
Inventor: GRIFFITHS LESLIE HERBERT
IPC: C08L25/10
Filed: 1953-03-14
Abstract: A thermoplastic composition comprises a mixture of coal tar with 5 to 50 per cent of its weight of a copolymer of styrene and butadiene containing at least 50 per cent, preferably 70 per cent, of styrene. The copolymer may be stirred into the heated tar or incorporated on the rollers of a mill.  A filler such as granulated cork may be included.  The composition may be used for pipe-jointing, expansion joints, or insulating materials, or in aqueous dispersion as an adhesive.
Patent GB-755129-A (GB)
Title: Steroid esters
IPC: C07J1/00
Filed: 1954-03-11
Abstract: The invention comprises a 17-nortestosterone 17-acylate or the 3-enol acylate thereof, wherein the acylate radical is of the formula AcO, Ac being the acyl radical of an alkyl or cycloalkyl monocarboxylic acid containing from two to eight carbon atoms, inclusive, or of an arylalkyl monocarboxylic acid containing from two to three carbon atoms in the alkyl carboxylic acid radical, and the preparation thereof by reacting 19-nortestosterone with an acylating agent.  If the reaction is effected in the presence of a basic catalyst mainly a 19-nortestosterone 17-acylate is obtained while if the reaction is effected in the presence of an acid catalyst mainly a 19-nortestosterone 17-acylate 3-enol acylate is obtained.  Examples disclose the production of 19-nortestosterone 17-propionate, 17-acetate, 17-(b -cyclopentylpropionate), and 17 - trimethylacetate and the corresponding 3-enol acylates.  Other compounds which may be obtained by the process of the invention, are 17-cyclopentyl formate, 17-cyclohexyl formate, 17-cyclopentyl acetate, 17-cyclobutyl formate, 17 - a  - cyclopentyl propionate, 17 - cyclohexyl acetate, 17 - cyclopropyl formate, 17 - cycloheptyl formate, 17-b -(methyl-cyclopentyl)-acetate, 17 - b  - (methylcyclopentyl) propionate, 17 - b  - (dimethylcyclopentyl) - propionate, 17 - b  - (cyclobutyl) - propionate, 17 - pentenoates, 17-acrylates, 17-methacrylates, 17a -phenyl propionates and 17b -phenylpropionates of 19-nortestosterone.
Patent GB-495361-A (GB)
Title: Improvements in methods of and means for the production of ribbed tubing rolled on a mandrel
IPC: B21C37/20
Filed: 1938-03-08
Abstract: 495,361. Rolling ribbed tubes. LENK, R. March 8,1938, No. 7205. Convention date, March 10, 1937. [Class 83 (iv)] In rolling external ribs m on a tube between a mandrel C and peripheral rolls B the tendency to form internal grooves i, Fig. 5, is prevented by skewing one or more of the rolls forming a pass so that its plane is at an angle to the direction of rolling I-I (i.e. the angle x is greater than 90‹) whereby the slip so curved tends to force some material in the direction of the arrow II, Fig. 5, and prevent the grooving i. The ribbing may be begun in the machine with the rolls set in the direction of rolling and their angle is then changed until the issuing tube is observed to be free from internal grooving. Fig. 6 shows the setting of the rolls for cylindrical grooving, Fig. 8 shows helical grooving rolls, the first roll being set with its plane parallel to the rolling direction and the succeeding rolls B<2>, B<3>, B<4> deviating progressively therefrom. In Fig. 9 there is one set of rolls with plane parallel to the rolling direction and a succeeding set deviating from that direction. Fig. 10 shows a composite roll with grooves increasing in depth the whole roll being capable of being set at a skew angle to the rolling direction.
Patent GB-707704-A (GB)
Title: Improvements in or relating to direct positive photographic emulsions
Inventor: PHILLIPS HENRY
IPC: G03C1/485
Filed: 1952-03-20
Abstract: 707,704. Photographic emulsions. ILFORD Ltd. March 3, 1953 [March 20, 1952], No. 7224/52. Class 98(2) A direct positive photographic emulsion comprises a fogged silver chloride emulsion (which may contain up to 1 per cent of silver iodide) containing a complex alkali metal or ammonium halide of rhodium. The emulsion may be fogged by light exposure or by including formaldehyde therein and allowing to stand at elevated temperature. In an example, formaldehyde solution is added to a gelatino silver chloride emulsion containing silver iodide and the emulsion heated. The pH is then adjusted to 6.25 and a solution of rhodium trichloride in aqueous sodium chloride solution added. Specification 667,206 is referred to. Reference has been directed by the Comptroller to Specification 602,160.
Patent GB-453276-A (GB)
Title: Improvements in knitting machines and in the production of fabric thereon
IPC: D04B15/34
Filed: 1935-03-08
Abstract: 453,276. Knitting-machines. HOSIERY DEVELOPMENTS, Ltd., 30, Park Row, Nottingham, JONES, T. H., The Aspens, Breck Hill Road, Woodthorpe, Nottinghamshire, and MILLS, R. K., 3, Edwards Lane, Sherwood, Nottingham. March 8, 1935, No. 7236. [Class 74 (ii)] Circular machines ; sinkers ; cams.-Individually - adjustable sinker controlling or operating cams are provided at the loopdrawing and the knocking over positions. As shown, the cams 11, 17 are arranged at the feed for the locking thread c of a circular machine and in a multiple feed machine permit of the locking loops being pushed the same distance down the legs of the main loops a, b at the several feeds. The cams 11, 17 can be moved longitudinally in guides 25 in blocks 26 by means of bell-crank levers 37 pivoted at 38, one arm being connected by a pin 40 to the cam and the other arm slotted to receive an eccentric 34 on the spindle of a graduated knob 32. The block 26 is adjusted radially by means of a screw 29 and graduated knob 30. The sinkers 15 are returned by cams 20, 20 attached to the blocks 26. In making the fabric shown in Fig. 10 a main loop a is cleared below the upper latch 1 of a needle, a main thread b is drawn across the forward edge 15b of the sinker, the loop a is knocked over, the sinker withdrawn to allow the new loop b to pass below the nose 15c, the new loop is cleared below the bottom latch 2, and locking thread fed across the sinker edge 15b and between the two needle latches 1, 2. The loop c is drawn through the loop b, then the loop b through the loop c which is knocked over. Specifications 329,098, 330,041, [both in Class 74 (ii)], 360,998, 380,554, and 422,779 are referred to.
Patent GB-813596-A (GB)
Title: Improvements in rotary pumps of the flexible-vane type
IPC: F04C5/00
Filed: 1957-03-05
Abstract: 813,596. Rotary pumps. JABSCO PUMP CO. March 5, 1957 [March 14, 1956], No. 7301/57. Class 110 (2). In a rotary pump of the flexible vane type, the cam 26 is provided with spaced fingers 34, 38 adapted to extend only part way across the inlet and outlet ports respectively in the peri. pheral direction in order to permit fibres 42 or crystals to pass into the outer blade spaces.
Patent GB-848128-A (GB)
Title: Improvements in or relating to recording devices
IPC: G01C19/28
Filed: 1958-03-07
Abstract: 848,128. Recording-apparatus. PLINT & PARTNERS Ltd., and PLINT, M. A. Feb. 16, 1959 [March 7, 1958], No. 7464/58. Class 106 (4). Recording - apparatus comprises electric motors 8, 9 to feed independent strips 6, 7 of record-receiving material in different directions in superimposed paths which cross each other, an electrode 2 spaced from the paths and adapted to move about a datum position and a spark generator 10 connected with the electrode 2 so to energize it that it records simultaneously on both strips 6, 7. The electrode 2 co-operates with a fixed electrode 3 provided with slots for guiding the strips 6, 7 in paths at right angles and the electrode 2 is supported by the gimbal ring of a freely suspended gyroscope 1. The gyroscope 1 may be mounted on a vehicle so that its angular movement about two axes can be recorded on the respective strips, which may be time-driven or vehicle-driven. The potential of the sparking coil 10 can be varied to produce a continuous or an intermittent arc. Instead of using spark recording, the records could be made on suitably prepared strips either photochemically or electro-chemically.
Patent GB-1214371-A (GB)
Title: Digital canonical filter
Inventor: DEERFIELD ALAN JASON
IPC: H03H17/04
Filed: 1968-02-15
Abstract: 1,214,371. Pulse radar; active filters. RAYTHEON CO. 15 Feb., 1968, No. 7474/68. Headings H3U and H4D. A known "digital canonical filter" comprises an input adder feeding into a series of registers (each register acts as a digital delay device and represents a pole or a zero of the filter) from which weighted-by B factors-are fed back to the input adder and an output adder fed with further weighted-by A factors-outputs from the registers, Fig. 1 (not shown). A single such filter cannot perform different filtering operations and according to the present invention a reference table is provided to store all possible values of a set of variables weighted by a corresponding set of weighting constants. The invention permits a reduction in the number of multiplications to be carried out and achieves high speed operation. Considering the embodiment of Fig. 2 if B 1  is specified and X N-1  (the variable provided by register 20) is an eightbit number only 256 products of B 1 X N-1  are possible; a magnetic storage reference table 10 consists of 256 words, the products corresponding to B 1  being written into a portion of each word and stored in column 12 and similarly for B 2 , B 3 , B 4 . The values of variables X N-1  . . . X N-4  are identical to the values of X N  at a time one . . . four cycles earlier respectively i.e. XN at time N becomes X N-1  at time N + 1. The register arrangement is as depicted. Similar considerations apply to the A-products. An embodiment utilizing fewer components utilizes less registers but more adders, Fig. 3 (not shown). Radar.-The radar bi-polar video output signal is fed to an analogue-to-digital converter (122, Fig. 4 (not shown)), the converter output is temporarily stored in a digital memory (124) and a succession of stored values from the memory are read out in any desired sequence into the canonical filter. Targets in intense clutter can be detected; a magnetic tape unit (128) fills the reference table (130) with desired values: for example one set of filter characteristics may be used in clear weather and a different set in the event of rain. Other applications mentioned are speech and frequency spectrum analysis.
Patent GB-287137-A (GB)
Title: Improvements in or relating to nitrocellulose-oxyn solutions particularly for use as lacquers or varnishes
IPC: C09D101/18
Filed: 1928-03-10
Abstract: 287,137. I. G. Farbenindustrie Akt.- Ges. March 16, 1927, [Convention date]. Adhesives.-Nitro-cellulose solutions contain oxyns such as linoxyn, with or without plasticizers, resins, dyestuff s, colours, &c. The oxyn may be dissolved in solvents such as alcohol, benzene, acetone, amyl acetate and added to the nitro-cellulose solution or the materials may be simultaneously dissolved. In examples (1) a 66.6 per cent solution of linoxyn in alcohol is added to an 8 per cent solution of celluloid in alcohol-amyl acetate, (2) a similar solution of linoxyn and tricresyl phosphate are added to an 8 per cent solution of celluloid in alcohol-butyl acetate. Thinners may be added. The products may be used as adhesives. Specification 2569/00, [Class 140, Waterproof &c. fabrics], is referred to.
Patent GB-1013383-A (GB)
Title: Improvements in clean rooms
Inventor: BASS JOHN
IPC: F24F8/108
Filed: 1962-02-27
Abstract: 1,013,383. Clean rooms; panel structures. JOHN BASS Ltd. May 27, 1963 [Feb. 27, 1962], No. 7537/62. Headings E1A and E1 V. [Also in Division F4.]  A clean room comprises wall and roof panels 11, 12 mutually supporting one another without use of a frame structure, an airconditioning unit 28 for controlling an internal condition of the room, and an ante-chamber 27 for example, for entrance (Fig. 1), the panels 11 having abutting edges with concealed securing means therebetween comprising pairs of aligned openings 20 (Fig. 3), one in each abutting edge, a bolt 19 passing through each pair of openings 20, the ends of which bearing nuts thereon, are accessible through access openings 21 in panels 11. The openings 21 are concealed by plates 23 and the abutting edges are sealed by a strip 22. Beams 24, supported by the panels 11, interconnect the roof panels. The unit 28 may supply substantially dust free air to the clean room to maintain therein a pressure slightly higher than atmospheric, air being continuously withdrawn from the room before conditioning it prior to returning it thereto. The floor is solid and dust free and the roof panels have one or more windows to admit light from outside lighting units. The wall panels 11 have windows as required and one panel 11 has a normallyclosed escape hatch 26, usable for example for entry of machinery. Specifications 870,200 and 930,800 are referred to.
Patent GB-245314-A (GB)
Title: Improvements relating to the withdrawal of vapours and gases from electrolytic tanks
IPC: C25D21/04
Filed: 1925-03-20
Abstract: 245,314. Pfanhauser, W. A. F., and Langbein - pfanhauser - Werke - - Akt.-Ges,.. March 20, 1925. Supporting electrodes; hydrogen, oxygen, and chlorine, obtaining; removing noxious fumes and gases. - Gases and vapours are removed from above an electrolytic vat 1 by conduits 4 provided with openings on the underside and connected to an exhauster 7. The conduits 4 are secured below an iron frame 3 which carries the electrodes 5 and the electrode leads 2 and rests on an insulating frame 6. The gases liberated at the anode such a.s hydrogen and those liberated at the cathode such as oxygen or oxygen and chlorine may be withdrawn separately to prevent explosion.
Patent GB-137964-A (GB)
Title: Improved process for the manufacture of hollow or partly hollow articles from horn
IPC: B29C43/00
Filed: 1919-03-26
Abstract: 137,964. Segre, M. March 26, 1919. Horn, preparation and treatment of.-Hollow articles, more particularly of bell-shape such as electric insulators, are made from horny material by subjecting to heat treatment in a suitable mould the intermediate portion of the horn that connects the solid end with the thin walled portion. Fig. 1 shows the section of the horn of au ox, which is cut along the lines b and c, the intermediate portion being used to form the article. Fig. 3 shows a mould 1 for electric insulators, the horn being forced to the shape of the mould under heat treatment and pressure from the die 2. Screw threads may be formed according to the process described in Specification 10901/15. If the intermediate portion is not sufficient to form the desired article, cuttings of horny material may be placed in the mould.
Patent GB-893388-A (GB)
Title: Improvements in or relating to diazacyclopropane compounds
IPC: C10L1/232
Filed: 1960-03-03
Abstract: The invention comprises compounds of the formula <FORM:0893388/IV (b)/1> (wherein R1 is a hydrogen atom or an alkyl radical and R11 is an alkyl or aryl radical, or R1 and R11 together represent a polymethylene chain) and their preparation by reacting chlorine or chloramine in the presence of excess ammonia of at least 1 : 4 by volume with an appropriate aldehyde or ketone at -50 DEG C. to 100 DEG C.  Suitably gaseous chlorine and ammonia (which may be premixed to form a mixture of chloramine and excess ammonia) are introduced into the liquid, intensively agitated aldehyde or ketone.  The gases may be diluted with an inert gas and the carbonyl compound with an inert solvent, and the process may be conducted under super-atmospheric pressures.  Examples are given and an apparatus for conducting the process as a continuous one is described with the aid of a drawing.
Patent GB-439273-A (GB)
Title: An improved composition for the manufacture of floor, wall and or roof tiles
IPC: C04B28/32
Filed: 1935-03-12
Abstract: A composition for the manufacture of floor, wall and roof tiles comprises a mixture of fine powdered sawdust, coarse sawdust, sand and calcined magnesite to which is added a magnesium chloride solution until the mixture reaches the desired consistency.  The magnesium chloride solution is obtained by dissolving magnesium chloride in boiling water and is of about 20 per cent strength. Rubber latex and colouring materials may be added to the mixture. In an example, flooring tiles are made from a mixture consisting of 25 per cent fine powdered sawdust, 15 per cent coarse sawdust, the particles of which are about 1/16 inch in size, 5 per cent sand, 35 per cent rubber latex and 20 per cent calcined magnesite.
Patent GB-346934-A (GB)
Title: Improvements in or relating to guiding or supporting rollers for belt conveyors or the like
IPC: B65G39/02
Filed: 1930-03-10
Abstract: 346,934. Ball and roller bearings. HOPKINSON, A., 40, Great Smith Street, London. March 10, 1930, No. 7761. [Class 12 (i).] Ball and roller bearings for a hollow conveyer roller a or the like are secured in position by internal ridges b which are pressed from the material of the roller a and which embrace the outer race ring c of the bearing. The ring c is a tight fit within the roller a. The roller a may have more than one antifriction bearing. The ridges b may be formed by a too] consisting of a hardened steel roller d which has circumferential collars e and is journalled in a holder f.
Patent GB-707558-A (GB)
Title: Improvements in or relating to valves or cocks
Inventor: GOODMAN HUGH FREDERICK
IPC: F16K1/20
Filed: 1951-04-04
Abstract: 707,558. Valves. A. P. V. CO., Ltd. April 4, 1952 [April 4, 1951], No. 7805/51. Class 135 A valve consists of a closure flap 5 actuated, through a screwed handle 13, by a spindle 12 with which it has a ball and socket connection, and fitted with a peripheral packing ring 17 for co-operation with an oblique seat which merges smoothly into the flow passage at a point opposite the point about which the flap rocks so that no step &c. is formed which would prevent the valve from being self draining. The flap rocks about an abutment with the upper part of the seat during closure, and about the lower edge of a spigot 9 on a cap 7 during opening, the flap, in the fully open position, lying within a recess 10 so as not to obstruct the flow passage. A lug 23 on the flap engages a slot 24 in the spigot 9 to hold the flap against rotation. The packing ring 17 may be omitted in which case the periphery of the flap is formed for metal-to-metal contact with the seat.
Patent GB-973734-A (GB)
Title: Oxidation of poly-ª‡-olefines
IPC: C08F8/06
Filed: 1961-03-03
Abstract: Dry, powdered, crystalline polymers of a -olefines containing 3 to 7 carbon atoms are oxidized with a gaseous oxygenating agent at a temperature below the melting point of the polymer.  The polymer may be a homopolymer of propylene, 4-methyl-1-pentene, 3-methyl-1-butene or 3-methyl-1-hexene.  The temperature of oxygenation is between 90 and 145 degrees for polypropylene and between 90 and 180 degrees for the other poly-olefines.  The oxygenating agent may be air or oxygen and may be diluted with nitrogen or other inert diluent.  The dry polymer powder may be obtained directly from the polymerization reactor, otherwise it may be made by precipitation from a polymer solution using a non-solvent. The time of heating varies from one quarter to thirty hours.  Heating may be carried out using a heat lamp or an ultra-violet lamp. The product is a readily emulsifiable, dyeable and printable crystalline polymer.  Specifications 952,431 and 952,432 are referred to.
Patent GB-814890-A (GB)
Title: Improvements in or relating to apparatus using a radioactive material and an ionisation chamber
IPC: H01J17/32
Filed: 1955-03-18
Abstract: 814,890. Ionization chambers. COLE Ltd., E. K., and DAVIS, R. G. March 19, 1956 [March 18, 1955], No. 7893/55. Class 39(1). An ionization chamber 1 with a foraminous collector electrode 3 and a rod or tube 4 within the collector electrode for collecting ions formed in the space within the collector electrode is enclosed by an air-tight container 20, and air or other suitable gas is injected into the container under pressure through a releasable valve 14, or through a pinch which is permanently sealed. Radiation passes into the container 20 through a window 16. The window may consist of aluminium foil backed by pressure pads 17 of aluminium strip sleeved with rubber. The ionization chamber 1 has a window 2 of metal foil on wire mesh.
Patent GB-443316-A (GB)
Title: Improvements in and relating to collapsible tube sealing
IPC: B65B7/14
Filed: 1935-03-14
Abstract: 443,316. Closing collapsable tubes. JOHNSON, B. A. E., and AKTIEBOLAGET G. AREHNS MEKANISKA VERKSTAD, 20, Alstromergatan, Stockholm. March 14, 1935, No. 7953. [Class 94 (i)] A collapsable tube has an end made of fusible material such as tin, lead, &c. and is sealed by fusing down part of the end. As shown in the Figure, the tube 1 is fed between jaws 2 which are insulated from the operating arms 3 and are connected to a source of electric power 14. As the driving cam 12 rotates, the jaws 2 are forced together (as shown) and are heated by the electric power so that the metal of the tube between the jaws is fused and the tube end is sealed by simultaneous cutting and melting down the cut. The jaws may be replaced by scissor blades and the jaws or blades may be heated by a flame. Alternatively, only one jaw or blade may be heated.
Patent GB-1284843-A (GB)
Title: Hardenable alloy steel
IPC: C21D6/00
Filed: 1970-02-19
Abstract: 1284843 Alloy steel CORNING GLASS WORKS 19 Feb 1970 [24 Feb 19691 7975/70 Heading C7A Alloy steel comprises in weight per cent:- C 0.2-0.35 Co 3-6 Cr 14-16 Mo 0.5-4.5 Si 0.1-1.5 W 0.3-2.5 B 0-0.02 Mn 0-3 - N 0-0.1 Ni 0-3.5 Nb 0-1.5 and V 0-1, the balance, apart from impurities, such as P up to 0.03 and S up to 0. 025, being Fe; and is so proportioned that the chromium equivalent defined as %Cr + 2x%Si + 1. 5x%Mo + 0. 75x%W + 5x%V + 1.75x%Nb is equal to 19-29% and the nickel equivalent defined as 30x%C + %CO + 0. 5%Mn + %Ni + 25x%N is equal to 11-18% but is not less than 0.7143 x the chromium equivalent - 3. 286. The cast parts may be homogenized at 1650- 1800F., air cooled and optionally heated at 1100-1375F. The steel may then be austenetized at 1650-1850F. followed by air or oil quenching and tempering in one or more steps at 1100-1400F. with air cooling. Low temperature tempering at 400-750F. with sub-zero cooling is also referred to. Use Parts in contact with molten or plastic glass.