baber/WOPTO huggingface dataset:
Patent GB-639918-A (GB)
Title: The production of articles of synthetic resinous materials
IPC: G02B1/04
Filed: 1948-03-01
Abstract: Articles such as optical elements, rods and sheets are made by photopolymerizing in a mould a previously prepared partially polymerized syrup, the syrup containing a light activated polymerization catalyst but substantially no heat activated polymerization catalyst which is effective at any temperature reached during the polymerization of the syrup to the solid state and the syrup being prepared by partially polymerizing by heat one or more polymerizable liquids containing one or more CH2=C< groups in the presence of an aliphatic thiol or a compound obtained by oxidizing it to any state below the maximum normal valency state of sulphur but in the absence of any substance which is an active heat polymerization catalyst at any temperature reached during the light polymerization of the syrup to the solid stage.  In a modification the syrup is prepared in the presence of a heat polymerization catalyst, the nature and amount of which is such that its activity is destroyed during the preparation of the syrup.  Catalysts specified for use in the modification are alpha, alpha1-azodiisobutyronitrile; dimethyl and diethyl alpha, alpha1-azodiisobutyrates; alpha, alpha1-azodicyclohexane-carbonitrile; alpha, alpha1-azobis (alpha-ethyl butyronitrile) and alpha, alpha1 - azodiisobutyrocarbonamide.  Specified monomers are methyl and cyclohexyl methacrylates.  Suitable aliphatic thiols are monothioglycol, lauryl mercaptan, octyl mercaptan and 2-ethyl hexyl mercaptan.  Suitable photopolymerization catalysts are benzoin, acetoin, butyroin, benzoin ethyl ether and diacetyl.  The solid obtained by photo-polymerization may be subjected a heat treatment. Specifications 579,353 and 626,155 are referred to. The Provisional Specification also specifies as suitable monomers esters of methacrylic acid with fluorinated alcohols.
Patent GB-504968-A (GB)
Title: Improvements in or relating to liquid fuel burners
IPC: F23D3/00
Filed: 1938-03-01
Abstract: 504,968. Liquid-fuel burners. COWLEY, R. March 1, 1938, No. 6467, [Classes 75 (i) and 75 (iii)] In a liquid-fuel burner of the short drum or creeping flame type liquid fuel is fed from a constant level fuel container 5 past a valve 12 operated directly by a thermostat 16 to the burner bowl 18 and through a pipe 7 which may be fitted with a needlevalve to a pilot wick 20 extending below the burner bowl. The pilot wick is preferably arranged in a part of the burner bowl not communicating with the main part of the burner bowl which contains asbestos 19 or other incombustible material. The temperature at which the thermostat 16 operates may be adjusted by means of a nut 15 engaging a spring 14 tending to lift the valve 12 from its seating. The burner base is fitted with adjustable legs 3.
Patent GB-235310-A (GB)
Title: Improvements in electric brake and solenoid type magnets
IPC: H01F7/16
Filed: 1924-03-13
Abstract: 235,310. Crompton & Co., Ltd., and Jones, W. F. March 13, 1924. Electromagnets.-An electric brake magnet operating on single-phase alternating or continuour current comprises a cylinder A having windings C located in longitudinal slots on the inner surfaces, and a plunger D movable in the direction of the axis ; the cylinder ,always embraces part of the plunger, and the two parts are parallel and not coned so that the air-gap width is constant. A nonmagnetic liner may be provided between the two members. The inner end of the plunger may be formed with horns or spikes, and on alternating-current circuits the iron may be laminated or shaped to minimize eddy currents.
Patent GB-230501-A (GB)
Title: Improvements in alternating electric current relays and circuit arrangements therefor for protective purposes
IPC: H02H1/00
Filed: 1925-03-10
Abstract: 230,501. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). March 10, 1924, [Convention date]. Cut-out arrangements.-Relates to a protective arrangement for a polyphase alternating current circuit having an earthed neutral point in which selective, time-lag watt-relays have their current coils a energized responsively to the currents in the respective phases. A two-way switch is employed for each phase operated bv excess current in the phase and normally biassed to connect the voltage coil b of the relay of one of the other phases to this other phase. When operated the two-way switch serves to connect the voltage coil to the line voltage between the first phase and the other phase. By thus connecting the relays so that with leakage to earth they are connected with the phase voltage and with interphase faults they are connected with the line voltage, the time characteristics are correctly adapted to both forms of fault. In the case of a system without an earthed neutral an artificial neutral may be .employed.
Patent GB-648412-A (GB)
Title: Method and apparatus for cutting compressor blades and other profiled bodies
Inventor: SMITH AUSTIN GEOFFREY
IPC: B23C3/18
Filed: 1948-03-02
Abstract: 648,412. Milling lathes for copy-turning compressor blades &c. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. March 2, 1948, No. 6558. [Class 83 (iii)] [Also in Group XXIII] A method and apparatus for cutting compressor blades and other profiled bodies from a continuous bar comprises operating simultaneously on different regions of the rotated bar by a number of rotating tools, the axes of the tools being rocked together in accordance with the movement of a roller, the axis of which is rocked by contact with a rotating over-sized model, all the tools but one producing a profile which is larger all round than the required profile and the said one tool producing the required profile. A rectangular bar 4 is fed through the machine from left to right in successive stages and is driven at a number of points by chucks 5. Each work-section between the chucks is traversed by a milling cutter 9 adjustably mounted for setting the amount of cut on lever rests 10 and driven by gearing from long pinions 18. The lever rests are secured to a shaft 11 which is fed axially by means not described. A swan-neck lever 12 also secured at the mid-length of shaft 11 carries a roller-follower 13 which engages a pattern 14 of the blade to be reproduced. The tools and follower are maintained against the work and pattern respectively by hydraulic piston mechanism 28 of variable pressure connected to the lever 12. One pattern is rotated by gearing connected to that for driving the work-bar. The model may be of larger dimensions than the work to be produced and the ratio of the lever arms, and the relative movements of model, roller, and cutters are arranged for this. The bar is moved progressively through the machine after each cutting operation and the chucks re-clamped, producing a profile nearer to that required at each successive section, the final profile being obtained at the last stage and the finished workpiece being parted off by a hand-fed cutter 25. A grinding wheel may replace the milling cutter at the final stage. The apparatus may be provided with a.variable speed drive, whereby the model and bar rotate at varying angular speeds so that the rotary movement of the bar relative to the tools has the characteristic of constant linear speed.
Patent GB-836485-A (GB)
Title: Improvements relating to electric cookers
Inventor: GRAY GEOFFREY HUGH
IPC: F24C15/18
Filed: 1958-02-28
Abstract: 836,485. Grilling stoves. A. E. I. HOTPOINT Ltd., [formerly HOTPOINT ELECTRIC APPLIANCE CO. Ltd.]. Jan. 5, 1959 [Feb. 28, 1958], No. 6577/58. Class 126 A grill is hingedly supported on the back plate of an electric cooker so that it is foldable towards the back plate when not in use. As shown, the grill 3, counterbalanced by weights 6, is pivoted to the back plate 2 at 4 and raised by means of a handle 8 to its operative position in which it is supported by a pair of links 9 10 at each side. The back plate 2 is recessed to receive the grill. The heating current is controlled by a switch 17 and an additional switch 18 is automatically opened when the grill is lowered. Tension springs may replace the weights 6 and in an alternative embodiment (not shown) the grill may be hinged at its lower end to fall forward into operative position, in Which case the pairs of links 9, 10 are replaced by a single central strut.
Patent GB-732834-A (GB)
Title: Improvements in or relating to buffer devices for checking loom pickers
Inventor: HIRST ARCHIE JOHN
IPC: D03D49/36
Filed: 1952-03-15
Abstract: 732,834. Loom picker checking devices. METALASTIK, Ltd. March 11,1953 [March 15, 1952], No. 6769/52. Class 142(2). A checking device 17 for a picker comprises a corrugated rubber hose threaded on the picker guide rod 13 ; the corrugations may be separate and annular or may be of helical form. The hose 17 may be fitted at each end with a sleeve 23 having a flange 24 covered with rubber 25. Alternatively, an end cap may be embedded in each end of the hose as an insert during moulding. The hose may be of natural or synthetic rubber. The device may abut a fixed part of the loom or an adjustable stop on the guide rod 13. The sleeves and end caps may be of metal or may be of oil resisting and/or hard synthetic rubber, or of resin bonded fibre.
Patent GB-251061-A (GB)
Title: Improvements in apparatus for playing target games
IPC: A63F7/00
Filed: 1925-03-13
Abstract: 251,061. Walton, A. L. March 13, 1925. Table games.-Relates to apparatus for playing games of the bagatelle type, and consists in the provision in the playing surface of a baffle or baffles which are caused to revolve, oscillate or reciprocate and thereby cause a projectile to deviate from its original course before reaching a target. As shown, a board b is provided at one end with targets d in the form of holes or skittles, and is cut away centrally to receive a revoluble disc a over which any ball played at the targets must pass. The surface of the disc a may be flat, concave, convex or waved. In modifications, two or more baffles may be arranged separately or concentrically, or a ring shaped baffle may surround each target. Compartments e are arranged to receive balls which reach the end of the table.
Patent GB-1453642-A (GB)
Title: Circuit breaker
IPC: H01H71/50
Filed: 1974-02-14
Abstract: 1453642 Electrically tripped switches; electromagnetic switches LICENTIA PATENTVERWALTUNGS GmbH 14 Feb 1974 [14 Feb 1973] 6860/74 Heading H1N A contact arm 1 pivoted at 2 is spring urged to the contact closed position by a compression spring 5 acting between the arm 1 and a lever 6 pivoted at 7 on a member 13 rotatable about a fixed pivot 14 and normally engaging a latch shaft 15, 17. The lever 6 engages a latch 8 on a lever 9 also pivoted at 2 and the latch position is maintained by a compression spring 10. On overcurrent an armature (not shown) acts in the direction 12 on the lever 9 so that the latch 8 releases the lever 16 to remove the pressure of the contact urging spring 5 and the lever 9 also engages an abutment 16 on the contact arm 1 to move the contact arm 1 to the contact open position. For manual or undervoltage tripping the shaft 15, 17 is rotated to release the member 13 and unlatch the arm 6 as the rectangular part 17 of the shaft acts on the lever 9.
Patent GB-1037532-A (GB)
Title: Improvements in or relating to time delay generator circuits
IPC: H03K5/13
Filed: 1963-02-20
Abstract: 1,037,532. Pulse delaying circuits. SPACE TECHNOLOGY LABORATORIES Inc. Feb. 20, 1963 [Feb. 20, 1962], No. 6868/63. Heading H3P. A pulse-delaying circuit comprises an adjustable resonant circuit arranged to have a first natural frequency during a first half-cycle of oscillation and a higher natural frequency during subsequent half-cycles. As shown in Fig. 1, capacitors 38a, 36 are normally charged from a source 20 via resistor 18. When thyratron 12 is fired by a pulse 24, capacitor 38a discharges resonantly via inductor 40a and thyratron 50. At the end of the first half-cycle, thyratron 50 becomes non-conductive, hence the discharge continues at a higher frequency determined by the series combination of the thyratron capacitance 64 and capacitor 38a. The circuit 36, 34 has a long time constant so that the discharge current of capacitor 36 via thyratron 12 provides a bias which allows thyratron 12 to pass the negative half-cycles of the higher frequency oscillatory current. The leading edge of the first half-cycle of the higher frequency current may be extracted by means not shown so as to form the delayed pulse. The values of the other capacitors and inductors are selected so that the delay time is respectively doubled and trebled by setting switch 42 to its two further positions. In Fig. 3 (not shown), separate switches are provided to select the timing inductors and capacitors. In Fig. 4 (not shown), a pulse delaying circuit, similar to Fig. 1, has switches (124, 126) which may be closed respectively to add L-sections of inductance and capacitance across capacitor 38a (108) so as to double or treble the delay period. The additional inductors and capacitors then form a lumped transmission line. Alternatively the inductors and capacitors may be replaced by sections of coaxial cable or by electromechanical resonators.
Patent GB-271042-A (GB)
IPC: C10G11/08
Filed: 1927-03-11
Abstract: 271,042. Allgemeine Ges. fiir Chemische Industrie. May 12, 1926, [Convention date]. Mineral oils; purifying &c.-In the production of low-boiling hydrocarbons by splitting with aluminium chloride or double compounds thereof high-boiling hydrocarbons which have been freed from substances soluble in liquefied sulphurous acid, the more easily decomposed hydrocarbons are first split off by the action of small quantities, say 2 per cent, of the chloride. When these have been distilled off the residue is either split with b per cent of the chloride or is refined by the usual processes and used as white oil or for Diesel engines, transformers, or turbines.
Patent GB-350007-A (GB)
Title: Improvements relating to appliances for discharging pulverulent and semi-fluent materials from storage chambers
IPC: B65G65/48
Filed: 1930-03-03
Abstract: 350,007. Delivering measured quantities. THORNE, Co B., Hawkesbury, Ontario, Canada. March 3, 1930, No. 6955. Convention date, Nov. 18, 1929. [Class 106 (v).] Storage chambers for pulverulent and semi-fluent materials are provided with mechanical means for sweeping the material from the walls of the chamber to a central discharge opening to ensure a complete discharge of the contents. The storage chamber 15 has an inwardly sloping base 16 and a central discharge opening 17 leading to a measuring receptacle 13. A centrally mounted shaft 19 carries a transverse bar 22 on the lower side of which are mounted curved blades 27 in staggered relationship adapted to sweep the material towards the centre of the chamber, radial blades 33 being provided on the hub of the bar to level the material which has been discharged into the measuring receptacle 13 mounted on a reversely rotating sleeve 13<1> on the shaft 19. The measured material passes through a discharge opening 12 to a conveyer, not shown, which removes it from the chamber. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a series of endless belt conveyers 37, Fig. 6 (Cancelled), extending across the discharge opening 36 of the storage chamber, the belts having upstanding projections 38 and sweeping the material from the bottom of the chamber. This subject-matter does not appear in the Specification as accepted.
Patent GB-657305-A (GB)
Title: Photographic studio apparatus
IPC: G03B17/53
Filed: 1948-03-08
Abstract: 657,305. Photographic studio apparatus. PARMOY, SOC. AR. L. March 8, 1948, No. 7041. Convention date, Feb. 4. [Class 98 (ii)] Coin-freed studio apparatus of the type in which the subject is stationed at a fixed distance from the camera and sees himself in a mirror, comprises in combination a cabin, formed as by curtains hung on a tubular framework 2, 3 and having a camera in a housing 1; a mirror 17 so positioned and dimensioned that the image of the subject formed therein indicates the position of the photographic image with respect to the camera field; and a reflector 5 extending horizontally from the mirror away from the camera and serving simultaneously to fix the distance of the subject from the camera lens, to provide an elbow rest, and to illuminate the subject, at least in part, with diffused light rays emanating from one or more light sources such as 9, 11, 12. A source of diffused light may be sunk below the level of the reflector. The subject sits on a stool 4, and can reach shutter actuators 13, 14 on the surface 5, or a footoperated actuator 15. Specifications 532,455 and 584,891 are referred to.
Patent GB-515678-A (GB)
Title: Improvements in and relating to the production of solid fibre bodies
IPC: D21J1/00
Filed: 1938-03-07
Abstract: 515,678. Moulding pulp. PAPPENGUSS GES. FUR ZELLSTOFFFABRIKATE. March 7, 1938, No. 7050. Void. Convention date. April 23, 1937. [Class 87 (ii)] In moulding cylindrical bodies from pulp a blank is formed in a die having a perforated periphery and the blank is dried and re-moulded in a die f having a smooth, imperforate periphery heated as by a gas burner k. The blank may be formed by compression in the first die between a plunger and a perforated end wall. The re-moulding may be effected in the die f between perforated plungers g, h which may be connected to suction as at i.
Patent GB-764734-A (GB)
Title: Phthalocyanine lakes
IPC: C09B67/00
Filed: 1955-03-10
Abstract: Phthalocyanine lakes are made by precipitating a water-insoluble alkaline earth metal resinate in presence of a water-insoluble phthalocyanine pigment, there being also present at least 0.01 part, per part of pigment, of a 1-hydroxyethylglyoxalidine containing an 8-18 carbon atom hydrocarbon chain in 2-position or at least 0.1 part of an ammonium salt of an acid not weaker than acetic acid, or a mixture thereof.  The resinate may be derived from rosin and its derivatives, tall oil, venice turpentine, ammonium, gamboge, styrax, and mastic.  Ammonium salts specified are the sulphate, nitrate, acetate, and phosphate.  In examples, (1) copper hexadecachlorphthalocyanine was dispersed in water, and to the dispersion was added successively ammonium chloride or 1-hydroxyethyl-2-heptadecenyl glyoxalidine, sodium rosinate solution, and barium chloride solution; (2) copper phthalocyanine was dispersed in water, both ammonium chloride and the above glyoxalidine were added and treatment continued as under (1). Calcium or strontium chloride may also be used.
Patent GB-920074-A (GB)
Title: Improvements in or relating to fasteners for mouldings
Inventor: WHYTE GEORGE JAMES
IPC: F16B5/12
Filed: 1960-03-01
Abstract: 920,074. Clips. R. L. BROWN. March 1, 1960, No. 7149/60. Class 44. An adjustable fastener for securing a channelshaped moulding 10 having inturned flanges, along its opposite longitudinal edges to a panel comprises a body portion 16 which is wider at one end than at the other end and is adapted to be secured to the panel for pivoting about an axis at or adjacent the narrow end of the body portion and perpendicular to the panel, the opposite longitudinal edges of the wide end of the body portion having flanges 22 for engagement with the inturned flanges 26 of the moulding to chain the moulding 10 on the panel and permit the fastener to pivot about the arms which is remote from the flanges for adjusting the lateral position of the moulding. As shown, the body portion 16 is slightly bowed and is secured to the panel by means of tabs 18 struck from the base of the body portion and engaging an aperture 20 in the panel about which it may be pivoted in order to facilitate alignment of the abutting ends of two moulding parts secured by a plurality of the fasteners.
Patent GB-222768-A (GB)
Title: Improvements in wheel rims
IPC: B60B21/12
Filed: 1924-03-20
Abstract: 222,768. Michelin et Cie. Jan. 14, 1924, [Convention date]. Tyre attachments to rims.-A wheel rim B having a central recess C is provided with means for closing the recess or a part of it to prevent entrance of the tyre edges. The major portion of the recess is permanently closed by a plate A, which may be integrally connected to the rim, a radially-adjustable plate D being fitted at the other portion of the recess. Fig. 4 shows the operative position of the plate D, and Fig. 3 the position in which the tyre edges are freed for assemblage &c. In modifications, the plate D is adapted to be drawn down so as to be flush with the edges of the recess or to be housed completely within the recess.
Patent GB-760801-A (GB)
Title: Improvements in governing means of engines producing rotary motion
Inventor: MEREDEW GEORGE CHARLES
IPC: G05D13/00
Filed: 1953-03-16
Abstract: 760,801. Fluid-pressure servomotor control systems. SELF-PRIMING PUMP & ENGINEERING CO., Ltd., and ROLLS-ROYCE, Ltd. June 11, 1954 [March 16, 1953], No. 7257/53. Class 135. An engine, e.g. an air or gas turbine, or an electric motor is governed by hydraulic means comprising a pump 12, e.g. of the rotary sliding-vane type, drawing liquid from a sump 15 and delivering it through a restriction 17 whence it returns to the sump, and a control bellows 21 connected by a rod 25 to means for controlling the engine and situated in a chamber 20 connected to the high-pressure side of the restriction 17 through a check valve 23 and to the low-pressure side by a restriction 24. Due to the provision of the check valve and restriction 24 and to the fact that the bellows requires a substantial flow into or out of the chamber 20 for its operation hunting is largely avoided, since a reduction of speed causes the check valve to close and the pressure in the chamber 20 to fall slowly as liquid escapes through the restriction 24. The bellows may be loaded by an adjustable spring and the rod 25 may be connected to a sleeve valve as in Specification 731,672, [Group XXVI], for controlling an air turbine or to a rheostat for an electric motor. As in Specification 731,672 the engine or motor drives a shaft 10 which is connected by bevel gearing 40, 56 to a shaft 14 for driving an aircraft fuel pump. The restrictions 17, 24 may be adjustable by needle valves. The sump 15 is vented by a valve 36 which closes if the apparatus is inverted, and has a connection through a non-return valve 32 with a sump 30 for lubricating oil.
Patent GB-825166-A (GB)
Title: Improvements in or relating to electrical apparatus and insulating materials therefor
IPC: H01B3/48
Filed: 1957-03-05
Abstract: 825,166. Electroluminescence. WESTING- HOUSE ELECTRIC CORPORATION. March 5, 1957 [March 14, 1956], No. 7265/57. Drawings to Specification. Class 39(1). [Also in Group XXXVI] An electroluminescent device comprises a dielectric of cyanoethyl cellulose with suitable phosphors therein disposed between electrodes at least one of which is transparent.
Patent GB-1535661-A (GB)
Title: Magnifier
IPC: G02B25/00
Filed: 1977-02-22
Abstract: 1535661 Screen magnifiers OPTISCHE INDUSTRIE "DE OUDE DELFT" NV 22 Feb 1977 [3 March 1976] 07400/77 Heading G2J [Also in Division H4] A magnifier for a screen 5 (e.g. an image intensifier) comprises four components only, viz:- (a) a positive element 1 (b) a positive element 2 (c) a meniscus doublet component 3 convex towards the object 5 (d) a positive element 4 Wherein:- (i) the sum of the refractive powers of the surfaces of (b) in between 0À15 f and 0À55f (ii) the sum of the refractive powers of the surfaces of (d) is between 0À45f and 0À65f (iii) the refractive power of the concave outer surface of (c) is between -0À63f and -1À03f. Two examples are given.