baber/WOPTO huggingface dataset:
Patent GB-879976-A (GB)
Title: A connector for assembling horizontal and vertical ladders to form scaffolding
IPC: E04G7/20
Filed: 1958-02-17
Abstract: 879,976. Scaffolding; ladders. WEINMANN, O. Feb. 17, 1958 [Feb. 16, 1957; Oct. 4, 1957], No. 5096/58. Class 20(2) A connector for joining ladders together end to end or at right angles to one another comprises a base plate 4 provided with two parallel pins 9, 10 and two spigots 5, 6 or a channel portion 12, 13 therebetween. The ladder stiles 1, 2 are provided with sockets 3 at their ends which engage over the spigots and are retained by cross-pins 8. To connect the ladders 1, 2 at right angles the transverse holes in the sockets are engaged over a pin 9 or 10. The connector, Fig. 5, is secured to a vertical ladder stile 1 at an intermediate point by a bolt 14 and nut 16 passed through a hole or sleeve 18 on the stile 1, a loose sleeve 17 also being provided, while a horizontal ladder is engaged with a pin 9 or 10.
Patent GB-721768-A (GB)
Title: Improved tensioning means for band knives
Inventor: BEECROFT HENRY
IPC: B26F1/38
Filed: 1952-02-27
Abstract: 721,768. Cutting-machines. BEECROFT & CO., Ltd., T. July 13, 1953 [Feb. 27, 1952], No. 5142/52. Class 31 (1). A tensioning device for an endless band knife 3 comprises a slide 5 movable in fixed guides 7 and carrying the stub shaft 4 of the upper guide pulley 2, the slide having projecting downwardly therefrom a rod 9 surrounded by a spring 11, the tension of which is adjustable, and having projecting upwardly therefrom a rod 13 the head of which is engaged by a manually operable cam 17 or eccentric mounted to have a limited operating rotation and act against the spring loading through the slide, the tension being applied to the knife or released by simple reverse rotary movements of the cam &c.
Patent GB-535500-A (GB)
Title: Improvements in or relating to super-heterodyne wireless receivers
IPC: H03J3/28
Filed: 1940-03-20
Abstract: 535,500. Wireless receiving apparatus ; inductances. PHILIPS LAMPS, Ltd. March 20, 1940, No. 5230. Convention date, March 23, 1939. [Class 40 (v)] [Also in Group XXXV] To facilitate tracking in a superheterodyne receiver, a correcting member is arranged so as to be capable of being shifted in the field of at least part of the inductance present in the oscillator circuit, the displacement of the correcting member having a linear relation to the displacement of the tuning means, the member being so designed as to correct the divergency from the required frequency. Fig. 1 shows the oscillator circuit comprising a fixed inductance 1 which is tuned to the desired frequency by a condenser 3 in series with a padding condenser 4 and a variable inductance 5. The condenser 3 of the sliding electrode type is ganged to a similar condenser in the preselector circuit and also serves to move the correcting member to vary inductance 5 so as to correct for errors of tracking. A suitable form for the inductance is shown in Fig. 3. A coil 11 is wound on an insulating sleeve 10 inside which is an insulating rod 12 movable with the condenser electrode and which carries an iron core 13 and copper ring 14. When the iron core is within coil 11 the inductance is a maximum and acquires a minimum value when the ring 14 is within coil 11. In Fig. 6 the inductance comprises two coils 34, 35 in series with magnetic fields opposed, the inductance of which is varied by an iron core 33 shown in the position of minimum inductance. The coils may be of equal size. In a further modification, Fig. 9 (not shown), the inductance of a single coil is varied by the movement of an insulating rod on which are spaced two copper rings. To give a near approach to correct compensation the rings may be combined into a single copper body as at 52 Fig. 11 shown in the position of maximum inductance. In another modification, Fig. 13 (not shown), the correcting member comprises a pair of coils mounted on an insulating shaft and arranged one on each side of a fixed control coil. In a final modification, Fig. 14 (not shown), the correcting member comprises an iron core arranged between two copper rings mounted on and moved by a copper rod.
Patent GB-176642-A (GB)
Title: Improvements relating to drawing and preparing fibres for spinning into yarns
IPC: D01H13/04
Filed: 1921-02-16
Abstract: 176,642. Dyson, J. W., and Dawson, J. H. Feb. 16, 1921. Addition to 133,800. Drawing-frames; sliver-conductors. - In an arrangement of the kind described in the parent Specification, the apertures through which the sliver &c. passes are enclosed to prevent the accumulation of fluff at these places, and the wires, rods, &c. used may be replaced by a corrugated surface. Fig. 3 shows an arrangement for use with a carding-engine. The funnel is formed with corrugations D and encloses the hole through whch the sliver passes. Fig. 4 shows an arrangement for application to the coiler top of a carding-engine. The sliver passes between two corrugated plates H, hinged together at K, so that they can be opened. The hole G through which the sliver passes to the coiler is enclosed when the upper plate is put into its closed position. Fig. 10 shows an arrangement for application to a drawing-frame. The sliver passes over a corrugated plate P and through a hole in the plate R. A shaped guide Q, narrowing to the hole R, is provided, and this can be enclosed by a cap S, Fig. 12. The guide Q turns over the selvedges of the sliver as it is passed through.
Patent GB-1012572-A (GB)
Title: Improvements relating to nuclear reactors
Inventor: ASHCROFT DAVID JOHN
IPC: G21C15/02
Filed: 1963-02-08
Abstract: 1,012,572. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 10, 1964 [Feb. 8, 1963], No. 5341/63. Heading G6C. In a boiling water reactor, in which pressurized light water is circulated through the fuel tubes, as a primary coolant, light water is circulated between the tubes, as a secondary coolant, and is boiled. The primary and secondary coolants function as moderators. To permit the isolation of a faulty fuel element without the removal of the core as a whole, for example in a marine propulsion unit, the fuel tubes are connected together, in series, in groups. Each group is formed of a number of spaced tubes on parallel axes. A group including a faulty element may be separately removed from the core, or isolated, while still in position, by reconnecting the primary coolant piping. To adjust the flow rate of primary coolant to the variation of heat generation across the core, the number of fuel tubes in the groups at the core centre is lower than in those at the periphery. During core servicing, the solid upper neutron shield is removed and the reactor flooded with secondary water to provide neutron shielding. Specifications 981,423 and 1,003,826 are referred to.
Patent GB-1377452-A (GB)
Title: Water-soluble capsules
IPC: A61K9/48
Filed: 1973-02-02
Abstract: 1377452 Telescopic capsules PARKE DAVIS & CO 2 Feb 1973 [3 Feb 1972] 5435/73 Heading B8C A pharmaceutical telescopic capsule composed of two co-operating, water-soluble shells 11 and 12 enclosing a particulate solid fill is provided with one or more apertures 15 which is/are overlaid with a sealing film 17 of a material substantially more water-soluble than the material of the capsule walls. The latter may be gelatine or other conventionally used equivalent materials, whilst the film may be composed of polyvinyl pyrrolidone or a cellulose derivative: The film may be applied by dipping, brushing, printing or spraying and is such that, when the capsule contacts water, it dissolves to allow access to the interior of the capsule whilst the walls thereof are still intact.
Patent GB-841941-A (GB)
Title: Improvements relating to upholstered structures
Inventor: TAYLOR WALTER SPENCER
IPC: A47C7/22
Filed: 1956-02-22
Abstract: 841,941. Spring surfaces. DUNLOP RUBBER CO. Ltd. Nov. 13, 1956 [Feb. 22, 1956], No. 5448/56. Class 52(4) Flat strips 14 forming a support for a cushion carried by a seat frame 11 are connected at their ends to rotatable rollers 12, 13, by which the strips can be tensioned, the strip ends passing through slots 23, 24 in the rollers and being doubled over. The straps may be arranged to diverge radially from a centrally suspended plate or ring.
Patent GB-730070-A (GB)
Title: Improvements in or relating to electrical connectors
IPC: H01R13/15
Filed: 1953-02-26
Abstract: A socket contact is formed of copper alloy of the following composition: about 60 per cent copper, 0.5-1 per cent tin, 0.4-1 per cent lead, 0.1 per cent or less iron, and the remainder zinc. According to another embodiment the alloy comprises: a minimum of 96.5 per cent copper, 0.85-1.35 per cent nickel per cent phosphorus, 0.35-0.65 per cent tellurium, a maximum of 0.2 per cent iron, a maximum of 0.1 per cent lead, and a maximum of 1 per cent zinc.  A spring blade fitted to the contact comprises about 2.4-2.7 per cent cobalt, 0.38-0.50 per cent beryllium, and the remainder copper.
Patent GB-557552-A (GB)
Title: Improvements in or relating to apparatus for checking the power generated by small electric motors
IPC: G01R31/34
Filed: 1942-04-23
Abstract: 557,552. Testing motors. SELF-PRIMING PUMP & ENGINEERING CO., Ltd., and WATSON, F. J. April 23, 1942, No. 5482. [Class 37] Testing apparatus is arranged for rapidly checking whether or not the power generated by a small motor reaches the prescribed standard when the motor is run at its prescribed speed. A base 10 supports a plate 11 on one end of which is mounted an eddy-current generator 12. This has a solid copper armature 13, or a squirrel-cage rotor, the field circuit 30, Fig. 3, being supplied from an A.C. source 31 and controlled by a rheostat 32 and a hand-operated switch (not shown). The motor 14 to be tested is supported in a V-block 15 with its shaft in alignment with the armature shaft of the generator. The block 15 is adjustable along the plate 11 for testing motors of different sizes and is locked in adjusted position by a set-screw 16. The shaft of the motor 14 is coupled with the shaft of the armature 13 by a flexible coupling 17. The motor 14 is supplied with current controlled by a handoperated switch. In parallel with the field of the generator 12 is a polarized relay 18 controlling red and green indicator lights 19, 20 mounted on a sloping panel 22. A stroboscope (not shown) is arranged to indicate when the motor is running at the prescribed speed. The field of the generator 12 is adjusted until the speed is correct, the field current then being a function of the power of the motor under test. The relay 18 closes the circuit of one or other of the indicating lamps 19, 20 according as the power is above or below the predetermined standard. The apparatus is also applicable for testing small motor car or other engines. Specification 557,551, [Group XX], is referred to.
Patent GB-180413-A (GB)
Title: Improvements in gyroscopic compasses
IPC: G01C19/38
Filed: 1921-02-18
Abstract: 180,413. Jackson, W. J. Mellersh-, (Soc. des Etablissements Gaumont). Feb. 18, 1921. Gyroscopic compasses.-Relates to compasses in which damping is effected by the application of torque around the vertical, the torque-applying means being controlled by the tilt of the gyrocasing around the horizontal, and consists in providing a non-mechanical coupling between the casing and the vertical ring in which it can tilt, the coupling becoming out of balance when a tilt occurs. A want of balance in the coupling results in the application of the damping-torque. As shown in Figs. 1 and 2 the gyro-casing C is pivoted on the horizontal axis F', F<2> in the gimbal-mounted frame I. Mounted on the ring E is a U-tube O containing conducting liquid, and carried by the casing is a motor-driven, blower L delivering air through two passages in the ring E and thence on the liquid surfaces in the two limbs of the U-tube, the pressures on the two surfaces being equal when the gyro-axis is horizontal. Secured to the shaft F<2> are two electromagnets n<1>s<1>, n<2>s<2> having their axes at right-angles to each other, the magnets being surrounded by a Gramme ring armature g having a commutator the brushes b of which lie on a line bisecting the angle between the axes of the magnets. The energization of the magnets is controlled by the movement of the liquid in the U-tube, resulting from inclination of the gyro-axis, in order to produce the required damping-torque. The bearing for each of the shafts F<1>, F<2> comprises a ring of balls arranged between a plate G and a cup H. The plate is pressed down by a spring K which can be adjusted by a nut F<3> and the cups are rotated in opposite directions by suitable gearing. In a modification the U-tube and fan are replaced by a pair of magnets carried by the casing and acting on a thermionic valve carried by the ring E. the valve operating the magnets by magnetic torsion as described in Specification 180,405, [Class 39 (i), Electric lamps, Arc &c.]. In a further modification the casing carries two coils supplied with alternating current and arranged one on each side of a third coil carried by the ring E and forming part of an electromagnetic relay. In a further modification these coils are replaced by three plates, the central plate forming part of an electrostatic relay.
Patent GB-628645-A (GB)
Title: Improvements in or relating to heat radiators and method of making same
IPC: H01J19/36
Filed: 1947-02-27
Abstract: 628,645. Cooling discharge apparatus. PARTRIDGE, N. G. Feb. 27, 1947, No. 5642. [Class 39 (i)] In an electron discharge device of the type having an external anode, the anode is provided with a heat-radiator comprising a stack of superimposed laminations arranged transversely of the axis of the stack, the laminations being shaped so as to provide the radiator with channels which extend in the direction of the axis of the stack and through which cooling medium can circulate. As shown, an external anode 2 projects into and is sealed to a plurality of laminations 6 which provide a plurality of longitudinal channels 5 spaced round the anode. To form the radiator, the laminations are each silver-plated, clamped in alignment in a jig, and heated to melt the silver and bond the laminations together. The radiator is soft soldered to the anode. The laminations may be shaped so as to provide tortuous or helical channels, and fins projecting into the channels. Laminations of different external diameters may form external fins, or the laminations may be of star-shape forming longitudinal fins and external channels.
Patent GB-438877-A (GB)
Title: Improvements in the treatment of materials comprising filaments, threads, ribbons and the like of organic esters of cellulose
IPC: D06M11/38
Filed: 1934-02-21
Abstract: Fabrics, yarns, and like materials comprising filaments, threads, or ribbons of organic esters of cellulose which have been stretched or twisted under the influence of steam or hot water are treated so as to saponify the cellulose ester content of the materials to a small extent.  The conditions of the treatment should be such that the saponification extends to a substantial depth below the surface of the materials.  The loss in weight of the material in the case of cellulose acetate should preferably not exceed 10 per cent and it may be as low as 3 per cent.  The saponifying agent may be caustic soda, caustic potash, sodium silicate, methylamine, or ethylene diamine. There may be present modifying agents such as gelatine, albumen, casein, leucine, starch, dextrin, cellubiose, g  cellulose, copper or other metal salts, alcohol, or swelling agents for the cellulose derivative. Threads which have undergone cr<\>zepe twisting may be treated and in the case of cr<\>zepe fabrics the saponification may be carried out subsequently to the production of the cr<\>zepe figure.  With very dilute solutions of the saponifying agent, the treatment may be carried out at raised temperature.  Specifications 125,153, [Class 2 (ii)], 415,412, 417,220, 429,103, 430,349, 437,019, 438,584, 438,585, 438,586, 438,587; 438,588, 438,589, 438,590, 438,591, 438,654, [all in Group IX], 438,655 and 438,656 are referred to.  The Provisional Specification also refers to Specifications 316,521, 318,468, [both in Class 2 (ii)], 415,412 and 428,224.
Patent GB-489872-A (GB)
Title: Improvements in and relating to guards for presses and the like
IPC: F16P3/00
Filed: 1937-02-25
Abstract: 489,872. Machinery guards. WHITEHOUSE, G. A. Feb. 25, 1937, No. 5721. [Class 80 (iv)] A pendulating arm 15 carries a horizontal finger 19 and is adjustably boltec to a plate 9 pivoted at 1( to the frame 1 of a hanc press. A stop 4 for limit ing the. down stroke of the plunger is secured to the rotary shaft 3 of the plunger. In its descent the stop 4 contacts with a rol. ler 13 carried by the plate 9 and causes the arm 15 tc swing from right to left across the machine and carry the finger 19 through the gap between the tool and the work-holder 7. The pivot pin 10 is carried by a collar 11 screw-clamped to the upper end of the frame 1. A counterweight 14 causes the return motion of the arm 15.
Patent GB-742727-A (GB)
Title: An electric circuit breaker
IPC: H01H39/00
Filed: 1953-03-02
Abstract: 742,727. Air-blast circuit-breakers; sparking preventing in switches. HUSA, V., KRIZ, J., CERNY, L., and JANOS, L. March 2, 1953 [March 4, 1952], No: 5753/53. Class 38(5) The main contacts 13, 16 of an alternating-current circuit-breaker 4 are arranged to open shortly before zero current by means of an explosion. The contacts are in parallel with contacts 3, Fig. 1, which are opened by an air blast through a valve 2, the blast also being applied to a delaying device which controls a contact 6 in the circuit of an impulse generator 7. The impulses are applied to a H.F. generator 9 which supplies a spark plug 11, Figs. 1 and 3, arranged to ignite an explosive mixture in a cavity 14 of the fixed contact 13. The explosion separates the contacts against the action of a spring 18 and their separation is accelerated by an air blast through inlet 26 and venting at 27. The final movement of the contact 16 is damped by a piston 22 in a liquid in a cylinder 24, the reclosing movement also being delayed so that a series disconnect switch 12, Fig. 1, may open first.
Patent GB-999186-A (GB)
Title: Improvements in or relating to transfer elements
Inventor: NEWMAN DOUGLAS ALEXANDER
IPC: B41M5/04
Filed: 1962-02-15
Abstract: The transfer layer of a pressure- or heat-sensitive transfer element (see Divisions D2 and G2) comprises a cellulose ether binder, imaging material and a mixture of two or more oleaginous modifying agents, and may be applied by deposition from solution. In the examples, the binder is ethylcellulose, the imaging material is a spirit-soluble black dye and the solvent is toluol; the other ingredients are: (Example 1) refined rapeseed oil, castor oil and graphite; and (Example 2) castor oil, mineral oil and butyl stearate.  Reference has been directed by the Comptroller to Specification 833,631.ALSO:A transfer element comprises a flexible foundation of paper or plastics film and a transfer layer of cellulose-ether binder, imaging materal and a mixture of two or more oleaginous modifying agents.  These modifying agents are so chosen that at least one, comprising at least 20% of the mixture, is substantially miscible with the binder, at least one comprising at least 20% of the mixture, is substantially immiscible with the binder, and the two are miscible with one another, or both are miscible with a third oleaginous material present to form a ternary mixture.  The coating mixture contains a larger proportion by weight of the oleaginous materials than of the binder.  The Specification includes lists of suitable oleaginous materials.  The coating layer may be applied by deposition from a solution in a suitable solvent and may be transferred to a copy-receiving sheet by the local application of pressure, as by writing or typing, or by thermographic or electrophotographic (see Division G2).  If the imaging material be spirit-soluble, copies made in any of these ways can be used as hectographic masters. Alternatively the imaging material may be one of a pair of colour-reactive substances, the other of which is present in the copy-receiving sheet or is brought in in the spirit process.  In another modification the imaging material is a conventional pigment such as carbon black nigrosine, graphite or magnetic iron oxide. Reference has been directed by the Comptroller to Specification 833, 631.
Patent GB-1376281-A (GB)
Title: Differentially resilient spring assembly
IPC: A47C25/00
Filed: 1973-02-06
Abstract: 1376281 Spring upholstery H J THOMAS Jnr 6 Feb 1973 5842/73 Heading A4M A spring core mattress includes at least one group of springs arranged in rows 10-13, each spring of the group having one end knotted, as at 18, and the other end free, as at 19, each end having a pair of opposed, parallel, straight portions and the straight portions of adjacent springs being hingedly inter-connected by helical wires 20. Adjacent springs may be of opposite hand. The mattress may include two groups, the springs of one group being inverted with respect to the springs of the other group to give different softness over the two groups. The spring assembly is covered on both main faces with padding so that the mattress may be inverted.
Patent GB-1459715-A (GB)
Title: Manufacture of shells
IPC: F42B12/32
Filed: 1975-02-12
Abstract: 1459715 Fragmentation projectiles WERKZEUGMASCHINENFABRIK OERLIKON - BUHRLE AG 12 Feb 1975 [13 Feb 1974] 5882/75 Heading F3A A fragmentation projectile comprises: a cylindrical casing 3; and balls 4 arranged in layers and partially embedded in a filler 5, e.g., of wax, and an explosive 6; the balls being subject to an axial compressive force, exerted by a screwedin head 10, so as to prevent detachment of the balls when the projectile is fired. The balls can be secured additionally by being bonded to foil or to a layer of solder adhered to the inner surface of the casing 3. The fragmentation effect of the projectile can be improved by forming the inner surface of the casing 3 with recesses so that some of the balls are less deeply embedded in the explosive than others. To make the projectile: an inner guide sleeve is inserted into a vertically disposed, empty casing 3; the annular space created between the sleeve and casing is filled with balls; a threaded ring is screwed into the open mouth of the casing to exert an axial force on the balls that retains them in position when the sleeve subsequently is withdrawn and the casing is tilted into a horizontal position; rotating the tilted casing about its longitudinal axis whilst pouring in molten wax; removing the threaded ring after solidification of the wax; and pouring molten explosive into the space remaining within the casing.
Patent GB-649923-A (GB)
Title: Improvements in or relating to high frequency mixers
IPC: H03D9/06
Filed: 1948-02-27
Abstract: 649,923. Electric filters. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 5944. Convention date, May 23, 1945. [Class 40 (viii)] A filter for connection in a radio receiver circuit between a mixer 10 and an intermediate frequency amplifier 18 comprises an electric transmission line having in series with one conductor thereof an inductance coil 16 wound on a tapered former with the small end adjacent the mixer 10. The incoming signal passes along a wave-guide 11 with a cut-off which determines the lower limit of the band of the system. The output of a local oscillator 14 is combined with the signal in crystal 10. The resulting output passes through a coaxial line filter 17 including a coil 16 wound on a tapered former and included in the inner conductor. This forms a low-pass filter which removes all frequencies except the difference frequency from the input to the amplifier 18.