baber/WOPTO huggingface dataset:
Patent GB-380651-A (GB)
Title: Improvements in sound producers
IPC: G10K9/13
Filed: 1931-11-24
Abstract: 380,651. Sound-producing devices. SUBMARINE SIGNAL CO., 160, State Street, Boston, U.S.A.-(Assignees of Williams, R. L. ; 109, Waban Hill Road, North, Chestnut Hill, Massachusetts, U.S.A.) Nov. 24, 1931, No. 32580. Convention date, Dec. 13, 1930. [Class 40 (iv).] An electrically-operated sound-producer of the type applicable for use as a fog-horn comprises one or a pair of diaphragms 10 mounted in a casing, the diaphragm or diaphragms being adapted to be vibrated by a pair of opposed armatures 11 which are so formed, as shown in Fig. 3, that each has three or more pole faces, of which some are cut at one angle to the direction of motion while the remainder are cut at an equal but opposite angle, the total area of the faces cut at one angle being equal to the total area of the oppositely inclined face or faces. With this arrangement, in the construction shown the two centrally opposed polepieces 14 on the armatures form between them a gap which is equally and oppositely inclined to the gaps formed between two outer pairs of polepieces 13, 15 and each central element has double the cross-sectional area of each of the outer elements. Thus the resultant magnetic pull is wholly in the axial direction of the armatures. The apparatus shown comprises two diaphragms, each of which has one of the armatures 11 secured thereto. A coil 4, to which alternating or intermittent current is supplied, passes through slots 16, 17 formed by the armatures, and is held by clamping arms 5 which are bolted to members 3 extending in wards from the annular body of the casing. Specifications 314,422, [Class 40 (iv), Telephones &c.], 352,957, and 353,089 are referred to.
Patent GB-938497-A (GB)
Title: Improvements relating to heat exchangers
IPC: F28D7/00
Filed: 1961-09-12
Abstract: 938,497. Making heat-exchangers. M. DE BOCK. Sept. 12, 1961 [Sept. 16, 1960], No. 32651/61. Addition to 847,291. Class 83 (2). [Also in Group XIII] In a heat-exchanger comprising an assembly of tubes 1 of e.g. cast iron, provided at their ends with nesting flanges 2 and with tubular steel extensions 4 secured to the tubes, e.g. during the casting process, a suitably apertured steel end-plate 6 is passed over the extensions 4 and retained by intermediate sheet-metal flanged sleeves 7 fitted over the extensions 4 and welded to them and to the end-plate to form a fluid joint. The plate 6 may be fabricated from rectangular steel strips and plates welded together and fitted into a frame 9 which is subsequently bolted to the main structure of the heat-exchanger. A second plate parallel to and spaced from the plate 6 may be similarly welded to extensions at the opposite ends of the tubes or welded directly to the apertured plate without the sleeve 7 as set out in the parent Specification.
Patent GB-324433-A (GB)
Title: Improvements relating to the control of railroad and like vehicles
IPC: B61L3/06
Filed: 1928-11-09
Abstract: 324,433. Neale, J., and Watson, H. R. Nov. 9, 1928. Light, control of apparatus by.-In apparatus for controlling railway and like vehicles by movement of an interrupter blade between a lamp and light-sensitive cell, the interrupter blade is provided with additional means for the illumination of the cell when the light from the usual lamp is obstructed. The additional lamps D may be on one or both sides of the interrupter C, Fig. 2, or below it as in Fig. 3, or may be arranged to cast a beam towards the cells B in a direction approximately parallel to the vehicle, Fig. 5. Specification 284,942, [Class 40 (iii), Telegraphs, Electric], is referred to.
Patent GB-1317005-A (GB)
Title: Optical lenses from diethylene glycol bisallyl carbonate
IPC: B29C39/00
Filed: 1970-07-06
Abstract: 1317005 Casting lenses; moulds J O BEATTIE LABORATORIES INC 6 July 1970 [15 July 1969] 32734/70 Heading B5A Optical lenses formed of polymerized diethylene glycol bis-allyl carbonate are cast in moulds cast from a cured resin which may be a copolymer of (a) 96-50% methyl methacrylate with 4-50% glycol dimethacrylate, (b) 30% methyl methacrylate with 70% acrylonitrile, (c) 96-50% styrene with 4-50% glycol dimethacrylate or divinylbenzene or (d) 10- 90% styrene with 90-10% acrylonitrile crosslinked with 5-50% glycol dimethacrylate or divinylbenzene. The mould is preferably cast under pressure e.g. 50 lb/in<SP>2</SP>, between a rigid surface of desired shape and a flexible membrane which accommodates polymerization shrinkage.
Patent GB-156410-A (GB)
Title: New or improved valve gear for steam operated machines for pickling metal plates
IPC: F16K3/24
Filed: 1919-12-31
Abstract: 156,410. Harris, H., and Cole, J. H. Dec. 31, 1919. Tappet gears.-The distributing-valve 10 of an engine 8, used to oscillate a beam 1 from which is suspended a carriage holding plates to be pickled, is operated by a lever 15 which falls under gravity, and is raised by a rod 23 provided with an adjustable spring tappet 31 which engages an adjustable block 24 on the lever. The rod is suspended from a weighted lever 20 pivoted at 19 to the engine cross-head and is movable between stops 22 thereon. The fulcrum of the lever 15 is adjusted by a lever 32 which is adjustable in position on a quadrant 34.
Patent GB-643756-A (GB)
Title: Lining hood for explosive charge
IPC: F42B1/028
Filed: 1947-12-15
Abstract: 643,756. Explosive charges for projectiles &c. SAGEB, SOC. ANON DE GESTION ET D'EXPLOITATION DE BREVETS. Dec. 15, 1947, No. 33033. Convention date, Oct. 28, 1942. [Class 9 (i)] An explosive charge of the cavity type is combined with a liner for the cavity, the wall thickness of the liner increasing in thickness towards its free edge. Fig. 1 shows a projectile having a body 10 and containing an explosive charge 11 with a cavity 12 into which fits a metal liner 13, this liner increasing in thickness towards its open end. An intermediate member 15 holding the liner in position carries a hollow nose piece 16. A base fuze F is adapted to function on impact. The liner for a projectile of 50 mm. calibre has a maximum external diameter of 43 mm. and the external wall is part of a cone of altitude 53 mm. and semivertical angle 22 degrees. The smaller end is domed and has a radius of 13.5 mm. The total axial length of the lining is 32 mm. and the wall thickness increases from 1 mm. in the dome to 2 or 3 mm. at the open end. The liner may be conical and have a peripheral flange for securing it in the projectile. An alternative conical form has a cylindrical extension. Another form is made in two parts, the outer part conical and of uniform wall thickness, while the inner part is a truncated cone of tapered wall thickness. This inner part is spot-welded within the outer part to strengthen the liner towards its outer end. Specifications 561,927, 628,931 and 643,736 are referred to.
Patent GB-1480981-A (GB)
Title: Photographic camera
IPC: G03B9/10
Filed: 1975-08-07
Abstract: 1480981 Photographic cameras ROBOT FOTO UND ELECTRONIC GmbH & CO KG 7 Aug 1975 [26 Sept 1974 4 March 1975] 33042/75 Heading G2A A photographic camera with a claw-feed film changing mechanism driven by an electric motor, has a rotary shutter driven by another electric motor and an electric control device for releasing the rotary shutter, the electrical control device being actuated by sensors responsive to the movement of the film drive motor. Film feed is driven by a motor 10, Fig. 1. Film 12 is fed from a spool 14 to a sprocket 16 to a film gate 20, back to sprocket 16 and to a take-up spool 46, driven through a slipping clutch. The film is advanced through the gate between exposures by reciprocating claws 28, 30 of a clawfeed mechanism also driven by motor 10. Motor 10 also drives a disc 52 with an aperture 54; light passing through this aperture energizes in turn sensors F1-F6. Shutter. Consists of a disc 54 with a cut-out portion 58, driven by a shutter motor 56. Photodiodes VL, VR are energized intermittently by light passing through arcuate slots 60, 62 of different radius and formed in disc 54, extending over about 170 degrees. Photo-diodes V2, V3, V4, in conjunction with the edges of cut-out 58, detect movement of disc 54. A second shutter motor 66 drives a generally semicircular vane 64, which has arcuate slots 68, 70 corresponding with slots 60, 62. Sensors VL', VR', V3', V4' correspond with sensors VL, VR, V3, V4. Optical system. The objective lens 72 forms an image on the film 12 at the gate 20. A secondary image is formed near the edge of the gate by a lens 76 and a reflecting prism 74 mounted on a carriage 78 slidable in a shoot 80 and urged into operative position at the top of the shoot. A reflex viewfinder comprising a mirror 86, field lens 88 and eyepiece 90 can be introduced into shoot 80, displacing carriage 78. Control of film drive motor. The apparatus as a whole is controlled by a logic circuit Fig. 2 (not shown) which comprises flip-flop circuits and NAND gates. The film drive motor 10 generates pulse signals in the sensors F1-F6 at different angles of rotation of the motor, which signals are fed to the logic circuit. The motor also drives a tachogenerator (G), Fig. 2 (not shown), which produces a voltage in proportion to the motor speed. This voltage is compared with a fixed voltage and the result signal, dependent on three different exposure rates, sets up different conditions in the logic circuit. Shutter motor 56 is energized to drive disc 54; after 360 degrees rotation of disc 54 the power to the motor is cut off and replaced by a reverse voltage to correct over-shoot. The speed of the motor is increased as the interval between exposures decreases. Shutter motor control. The point in the cycle of operation at which the shutter disc 54 begins to rotate depends on the speed of the film drive motor 10. When the exposure time is 1/500 seconds or less, the sensors V3, V4, VL, VR, are taken out of circuit, and replaced by sensors V3', V4', VL', VR'. The motors 56, 66 are then energized by increased voltage.
Patent GB-1312254-A (GB)
Title: Method for altering the genital function of mammals
IPC: E21D11/28
Filed: 1969-07-01
Abstract: 1312254 Influencing mammalian genital functions DOW CORNING CORP 1 July 1969 [1 July 1968] 33061/69 Heading A5B The genital functions of non-human mammals are influenced by administering thereto, either orally, parenterally or topically, an organosilicon compound selected from a wide range of specified compounds. It is stated that, depending on the dosage and the particular compound used, the functions of both male and female sex accessory organs may be increased or decreased to increase or decrease fertility. The compounds may also be used to treat prostatic hypertrophy and prostatic carcinoma. The invention also comprises pharmaceutical compositions for administration to man and animals comprising the active compounds in association with a pharmaceutically acceptable solid carrier. Active compounds which may be used include: those having the formulae: siloxanes having three silicon atoms per molecule, said silicon atoms being linked by a divalent oxygen atom, at least one of the silicone atoms having one valence satisfied by a phenyl radical or a hydrogen atom, the remaining valences of the Si atoms being satisfied by substituents selected from phenyl radicals, hydrogen atoms, C 1-6  alkyl radicals and OH radicals, there being no more than 2 hydroxyl radicals or Sibonded H atoms per molecule; and an equilibrated copolymer mixture consisting primarily of about 60% by weight of phenylmethyl siloxane units and 40% dimethylsiloxane units, the said copolymer having a viscosity, a specific gravity, a refractive index, an open cup flash point and an acid number within specified limits.
Patent GB-506793-A (GB)
Title: Improvements in or relating to the dyeing of textile materials comprising cellulose or its derivatives
IPC: D06P1/56
Filed: 1937-11-30
Abstract: 506,793. Dyeing textiles; artificial silk ; resinous condensation products. COURTAULDS, Ltd., and TALLIS, E. E. Nov. 30, 1937, No. 33086. [Classes 2 (ii), 2(iii),and 15 (ii)] The dyeing properties of textile materials, comprising cellulose or its derivatives which do not contain protein substances or their derivatives or basic amino or imino groups, e.g. cotton, rayon, linen &c. are improved by incorporating therein a product obtained by causing cyanamide and formaldehyde to react under acid or neutral conditions. Alternatively, the materials are impregnated with a solution' obtained by the admixture of solutions of cyanamide and formaldehyde, maintained slightlyÀ acid, and are subsequently dried and heated to cause condensation. Alternatively, the condensation products may be incorporated in the solutions from which artificial threads are produced. In examples: (1) crude calcium cyanamide is extracted with water, filtered, neutralized with strong sulphuric acid, the calcium sulphate filtered off and formaldehyde solution, ammonium thiocyanate and water added to the filtrate; viscose staple fibre is steeped in this solution, centrifuged, dried and heated for twenty minutes at 140‹ C., whereupon it is dyed with Azo-geranine 2GS. in a bath containing sulphuric acid; (2) a solution of formaldehyde and cyanamide is heated until a white precipitate is formed; this is filtered off, washed and dried and then dispersed in acetone and added to a cellulose acetate spinning solution ; the cellulose acetate yarn obtained is dyed with Azo-geranine 2 G.S. or Erio fast cyanine S in a bath containing formic acid ; (3) viscose is impregnated with a solution containing cyanamide, formalin and ammonium thiocyanate, hydroextracted, dried, heated at 150‹ C. for 5 minutes and dyed with Coomassie red P.G.S. or Indigosol blue I.B.C. ; (4) staple fibre is impregnated with a solution of cyanainide and formaldehyde which has been heated, rapidly cooled and diluted, and is hydroextracted, dried, heated to 100‹ C. for an hour and dyed with Azo-geranine 2 G.S. in a bath containing formic acid. Intensifiers or other useful compounds known to increase the affinity of the material for certain direct dyes may be added to'the treatment solutions ; when such compounds are basic, e.g. triothylamine, they are neutralized before being added. The process increases the affinity of the material for substantive, sulphur, vat, azoic, basic and acid dyes and for cellulose acetate &c. dyes. Specifications 319,822, [Class 2 (iii)]. and 484,901 are referred to
Patent GB-287541-A (GB)
Title: Improvements relating to the rolling stock of railways, tramways and road transport vehicles
IPC: B61F5/48
Filed: 1927-12-07
Abstract: 287,541. Algrain, P. March 25, 1927, [Convention date]. Addition to 278,337, (Class 79 (v), Motor vehicles &c., St,eering &c.]. Axle - tritcks a n d bogies; axles. - In rolling stock for railways, etc., as claimed in the parent Specification, the main frame of the vehicle is supported on the two end trucks by means of roller sectors 31, Fig. 1, pivoting in blocks 32, of which the prolongation of the axes of rotation pass through the vertical pivots 3 of the trucks. The centre truck moves laterally and if provided with four wheels as in Fig. 5 is supported on rollers sectors 31 on a central transverse member 38 and with blocks 36 adapted to slide in guides 37, Fig. 6. Shoes 40 on the blocks 36 are pressed on the guides 37 by springs 41. The centre truck may be connected to the longitudinal shaft which displaces the trucks by means of a buffer device comprising a rod 12, Fig. 3, connected to the shaft, a pivot 14 connected to the truck and a rubber block 35 which connects the shaft to the pivot. Where the total weight of the vehicle is carried by the end trucks, the central truck acts only to rotate the end truck by means of the mechanical connection uniting the three trucks. The central truck may be connected to the frame of the vehicle by two extensible supports comprising telescopic members 52, 51, Fig. 7, around which is disposed a spring 53, the ends of one extensible support being connected to the frame and axle respectively and the other to the axle and to the longitudinal shaft 9 which operates the three trucks. The axle is in two parts 55 and the opposed ends may slide longitudinally in a bearing 46. The axle-bearing 47, Fig. 8, of each of the axle-boxes 45 engages in a recessed part of the shaft 55 and is adapted to be moved longitudinally relatively to the axle-box which is fixed to cross-members 44. The bearing 47 is secured in the box 45 by shims 50 and when wear occurs on the flanges of the wheel a shim is removed from one side to the other of the axle-bearing.
Patent GB-727390-A (GB)
Title: Screw gear
IPC: F16H55/22
Filed: 1953-11-30
Abstract: 727,390. Toothed wheels. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Nov. 30, 1953 [Dec. 18, 1952], No. 33161/53. Drawings to Specification. Class 80 (1). The teeth of a worm wheel are chamfered on both sides and towards both ends in order to facilitate the entry of lubricating oil and the formation of wedge-shaped oil films between the tooth surfaces of the worm and worm wheel
Patent GB-648403-A (GB)
Title: Transducing device having an electromechanically responsive dielectric element
IPC: G04D1/06
Filed: 1947-12-17
Abstract: <PICT:0648403/III/1> <PICT:0648403/III/2> A piezo-electric element comprises a body of barium titanate ceramic to which is applied a large electrical polarizing bias. The element then responds linearly to the fundamental of an applied alternating potential.  In Fig. 1 a polarizing bias of about 1000 volts per millimeter is applied to a ceramic disc 10 by a source 15.  This causes the disc to contract radially and to expand in the thickness dimension.  An alternating potential from source 9 will cause the disc to vibrate in the surface and thickness modes.  Fig. 2 shows such a vibrator suspended in a vessel of oil and caused to vibrate by alternating source 23 and biassing source 24 so as to drive off gases contained in the oil. An inductance 25 tunes the vibrator to the resonant frequency of generator 23.  Specification 583,639, [Group XL], 648,404, [Group XL (b)], and U.S.A.  Specification 2,288,600 are referred to.
Patent GB-1311163-A (GB)
Title: De-ionisation
IPC: C02F1/00
Filed: 1970-07-09
Abstract: 1311163 Ion exchange CONSIGLIO NAZIONALE DELLE RICERCHE 9 July 1970 [12 July 1969] 33291/70 Heading B1J Solutions to be deionised are passed through a weakly acidic, cation-exchanger and at least part of the effluent is passed through a weakly basic, anion-exchanger. At least part of the effluent from the ion-exchanger is fed to the cation exchanger feed to ensure that said feed during recycling has a methyl orange alkalinity. CO 2  may be removed from effluents and used for recycling in a stage of the process.
Patent GB-398151-A (GB)
Title: Twin machine for the continuous printing of positive films on bichromate gelatine
IPC: G03B27/08
Filed: 1931-12-01
Abstract: 398,151. Photographic printing- apparatus. DELAFON, J. M. J., Les Charmerettes, Samoreau-sur-Seine, France.- (Assignee of Pouye, F. ; 19, Rue de la Paroisse, Fontainebleau, Seine - et - Marne, France.) Dec. I, 1931, No. 33300. Convention date, Dec. 6, 1930. Void [Published under Sect. 91 of the Acts]. [Class 98 (ii).] A twin machine for the contact printing of bichromated colloid films comprises two juxtaposed, preferably cylindrical members 1, 1<1>, Fig. 2, consisting of a series ot rollers 4, Fig. 4, driven by a common chain. An endless band 6 runs helically over the members and winds from one to the other. Superposed positive and negative films, fed from spools 7, 71 are carried by the ribbon along the length of each member and are rewound on spools 8, 8<1>. The light source consists of a line of mercury vapour tubes 16, Figs. 2 and 9, disposed in a casing 15 arranged at the adjacent parts of the members 1, 1<1>. Vertical and horizontal partitions 17, 18 divide the exposure area into parts corresponding to the picture areas on the films. Regulation of the exposure is obtained by sliding or pivoted shutters 24 which may be opened and closed automatically by clips fastened to the films where required and actuating the shutters through levers 21, 22, 23. Alternatively, an opaque strip may be fastened over such part of the films as it is required to submit to reduced exposure. The printing machine may be followed by developing, washing, dyeing, and drying apparatus.
Patent GB-1470493-A (GB)
Title: Anti-hypertensive 4-1-2-naphthyl-methyl-1,2,5,6-tetrahydro pyrid-4-yl-chroman-5-ol esters
IPC: C07D405/04
Filed: 1975-08-12
Abstract: 1470493 4 - [1 - (2 - naphthylmethyl) - 1,2,5,6- tetrahydropyrid - 4 - yl] - chroman - 5 - ol esters BEECHAM GROUP Ltd 12 Aug 1975 33473/75 Addition to 1451151 Heading C2C Novel compounds of the formula II and salts thereof wherein n is 3 or 4, X is C 1-4  alkylene, R is H or methyl, R 1  is H or C 1-4  alkyl, R 2  is H or C 1-4  alkyl or R 1  and R 2  together with the nitrogen to which they are attached form a 5- to 7-membered alicyclic ring, may be prepared by esterifying a compound of the formula IV with an acid R 1 R 2 NXCOOH or a reactive, optionally protected, derivative thereof. Pharmaceutical compositions of the compounds II or salts thereof with the usual excipients show anti-hypertensive activity when administered orally or parenterally.
Patent GB-850381-A (GB)
Title: Carpet stretcher
IPC: A47G27/04
Filed: 1955-11-22
Abstract: 850,381. Carpet stretchers. YOUNG, S. G. Nov. 22, 1956 [Nov. 22, 1955], No. 33503/55. Class 61. A carpet stretcher comprises an elongated metal body 1 having at one end a cup-shaped portion 3 in which a spiked gripper 12 is adjustably held and at the other end a socket 2 in which a padded anvil 16 is held by a wedge 15 which grips the edges of the cover 17 of the padding between the wedge and the socket. The wedge is pulled up into the socket by a nut 20 which passes through a hole 5 in the dividing wall 4 and threadedly engages with the tie bolt 21. The cover 17 is additionally secured to the wedge 15 by a circlip 18. The gripper comprises a rectangular metal plate 7 into which are cast the knurled ends of the spikes 12 and a threaded steel stud 13, the plate 7 being fitted with a sealing ring 14. The adjusting nut 9 carried by the stud 13, is held in the cup-shaped portion 3 by a retaining plate 11. Apertures are provided in the walls of the portion 3 to allow the nut 9 to be finger operated. In a modification, Figs. 2 and 3 (not shown), the centre part of the body is trough shaped and has transverse stiffening ribs. A dividing wall having a cored hole is provided at the end of the socket so that only a short tie bolt is required.
Patent GB-1394287-A (GB)
Title: Conveying mechanism
IPC: B65G23/00
Filed: 1972-07-19
Abstract: 1394287 Conveyer frameworks OEHLER-WYHLEN-LAGERTECHNIK AG 19 July 1972 [20 July 1971] 33710/72 Heading B8A  An endless roller chain 21 is trained around idler rollers 2, 3 carried by a box member 1 having an outwardly projecting rib 24 which supports the upper conveyer run, the lower run extending inside the member 1 and passing through a slot in the bottom thereof to pass around adjustable tensioning rollers 12a, 12b and a drive wheel 14. The drive wheel 14 is connected by a chain 16 to the shaft of a motor 20.
Patent GB-605097-A (GB)
Title: Synchro-mesh change-speed gearing
IPC: F16D23/06
Filed: 1945-12-14
Abstract: 605,097. Synchromeshed positive clutches. STANDARD MOTOR CO., Ltd., and GRINHAM, E. G. Dec. 14, 1945, No. 33861. [Class 80 (ii)] In order to permit true alignment between the engaging friction cones 30, 35 of a synchromesh clutch, the axially movable internally or externally coned balk-ring 30 has radial clearance (0.015 in.) in the hub-member 17, or gear which carries it, and is arranged on one side of the hub-member, with axially projecting lugs 32 engaging clearance-slots in the hub to provide the required circumferential lost-motion. The hub 17 is externally splined to carry the usual splined sliding clutch-sleeve 21, which engages clutch teeth 26 on one or both sides and is retained in the neutral position by spring ball-detents 24. To facilitate breaking down the oil-film, either cone-surface may have a helical groove, left or right-handed according to the direction of rotation.