baber/WOPTO huggingface dataset:
Patent GB-651911-A (GB)
Title: Improvements in arc-rupturing arrangements in electric circuit-breakers
IPC: H01H33/18
Filed: 1948-05-31
Abstract: 651,911. Heavy current switches; arc rupturing. CZECHOSLOVAK METAL & ENGINEERING WORKS, NATIONAL CORPORATION, and HOUST, F. May 31, 1948, No. 14688. Convention date, June 4, 1947. [Class 38(v)] An air-blast or oil-blast switch has its moving contact slidable on the insulated lead-in conductor to the fixed contacts, so that when the contacts separate electrodynamic forces assist in blowing- out the arc. In the oil circuit-breaker of Fig. 1, the lead-in conductor 4 to the fixed contact 10 is surrounded by an insulating tube on which a' concentric slidable moving contact member 5 may be moved by the switch actuating mechanism 6, 8. When the contacts are opened by the upward movement of the contact 5, the current in the arc drawn between the end of the contact 5 and the fixed contact 10, flows in the opposite direction to the current in the lead-in conductor. Hence the arc is repelled by electrodynamic forces' on to insulating barriers 20 and extinguished. A vent 21 permits the escape of the arc gases. The tube 5 may have a spiral cut which is stated to result in the formation of an electromagnetic field which causes  a rotary motion of the arc around the sleeve.
Patent GB-747568-A (GB)
Title: Electrolytic capacitors
IPC: H01G9/022
Filed: 1953-05-27
Abstract: 747,568. Electrolytic capacitors. WARREN, S. D., and BURKARD, R. F. May 27, 1953 [May 28, 1952], No. 14808/53. Drawings to Specification. Class 37. An electrolytic capacitor comprises a substantially anhydrous nitrogen free electrolyte comprising a non-hydrionizable liquid solvent preferably a ketone, aldehyde or ether containing at least one oxygen atom per molecule and a solute consisting of a weak organic acid and a basic cationogen. A " non-hydrionizable solvent " is one having no hydroxyl groups and which is an insulator by itself and when mixed with water, and a " cationogen " is a substance yielding positive ions in solution. Acetone, benzophenone, acetophenone and their silicon homologues, butaldehyde, propyl aldehyde and ether anisole are quoted examples of such solvents. Examples of cationogens given are sodium, potassium and lithium hydroxides, and sodium phenolate, cresylate and salicylate. Examples of suitable weak organic acids are phenol, nonyl phenols, ether phenols, para-, ortho-, and meta-cresols, and salicylic acid and their silicon homologues. The electrolyte reduces the fall in capacity and increasing power loss with age by preventing hydration of the oxide dielectric layer, and also allows formation of dielectric films on magnesium, zinc and copper as alternatives to the usual tantalum and aluminium. Capacitors comprising one electrode with an anodic film and the other without are described. Proportions of the ingredients in some electrolytes are given in the Specification. Specifications 387,437 and 713,900 are referred to.
Patent GB-769657-A (GB)
Title: Improvements in or relating to automatic circuit breakers
IPC: H01H73/30
Filed: 1955-05-23
Abstract: 769,657. Automatic circuit breakers. ALLARD, G. May 23, 1955 [May 31, 1954], No. 14824/55. Class 38(5) In a circuit breaker which may be tripped automatically or by hand, an operating member 8 attached to a push button 7 is formed with a knife-edge 12 about which a contact carrying lever 5 may pivot and also with a blade 10 having a lug 16 whicn engages an independent L-shaped latching member 11. The blade 10 and a further blade 9 pass through apertures in the lever which is formed from blades 5<SP>1</SP>, 5<SP>11</SP>, 5<SP>111</SP> '  and which carries at one end main and arcing contacts 4,and 4<SP>1</SP> to co-operate with a fixed contact 3. The other end of the lever rests on a stop member 20 which is pivoted at 22 and biased to the left, Fig. 1, by a spring 23. A spring 6 disposed around the blade 9 biases the lever to the "contacts open position. Depression of the button tilts the lever about the top of the stop member 20 until the contacts close and the latch engages (as shown in Fig. 1). The switch may be tripped either by depression of the button 30 of by expansion of a bimetal 33 when the stop 20 is moved to the right, Fig. 1, and the lever pivots about the knife edge 12 so that its right hand portion engages the top of the latch 11. tilting it to release the lug 16. The lever 5 carries a lug 38 (see Fig. 5) engaging a plate 42 which carries a contact 41 which bridges contacts 40, 40<SP>1</SP> of an auxiliary circuit when the main switch is closed.
Patent GB-572013-A (GB)
Title: Improvements in conveyors
IPC: B65G15/04
Filed: 1943-09-10
Abstract: 572,013. Conveyers. THOMPSON (WOLVERHAMPTON), Ltd., J., and WILLIAMS, G. P. Sept. 10, 1943, No. 14848. [Class 78 (i)] In endless belt conveyers of the kind in which a portion of one run is bent to a trough section and passes through an elongated tank containing liquid, the return run is disposed above the submerged load-carrying run and the load is fed on to the lower run by guiding it transversely to the length of the belt. The tank 10 has a bottom 11 of approximately rightangled channel section and inclined sides 12 which at the upper end have portions 15 of L-section. Longitudinal beams 17 forming part of the top of the tank structure support the inner rails 13, 14 of railway tracks and have a grating 20 disposed between them. A longitudinal member 18 with diverging sides 19 is arranged at the centre of the grating and carries the supporting rollers 31 for the top run 30 of the belt. Transverse walls 49 extend across the tank at intervals. Blue bricks 47, 48 protect the edges of the walls and the sides 12. Each portion 15 contains a detachable, metal shoot 16. The bottom 11 contains a metal trough 24 which is made in sections and is provided with deflector rails 26 which take over the edges of the belt 21. Pairs of rollers 22 at each end of the trough bear on the belt and form it into a, trough. As the belt passes over the pulley 38, Fig. 1, the load fails from it into hopper 39 which directs it on to a transversely-arranged conveyer belt 41 Fig. 2. This belt discharges into a hopper 45 which delivers on to an elevator belt arranged parallel to the main belt and at one side of the tracks 13, 14. In a modification (not shown) a deflector plate directs the material into the hopper 39. Specification 545,137 is referred to in the Provisional Specification.
Patent GB-842677-A (GB)
Title: Improvements relating to gas turbine engines
IPC: F02C7/04
Filed: 1958-05-09
Abstract: 842,677. Generating combustion products under pressure. GENERAL MOTORS CORPORATION. May 9, 1958 [May 28, 1957], No. 14885/58. Class 51 (1). [Also in Group XXVI] In a gas turbine engine having an axial flow compressor, the combustion system comprises a cylindrical casing which contains a ring of separate flame tubes each of circular cross-section at the upstream end and the diffuser which connects the compressor outlet to the combustion system comprises a ring of separate diffuser passages each having an inlet in the shape of a sector of an annulus and a circular outlet and each coaxial with one of the flame tubes, the upstream end of each flame tube being so arranged that the cross-sectional area of the flow path between a fuel nozzle at the centre of the inlet dome of the flame tube and the outlet edge of the diffuser passage, that is a surface of revolution generated by rotation about the flame tube axis of a line joining the fuel nozzle and outlet edge, is between one and a half times and twice that of the diffuser passage outlet. In the engine shown, the combustion equipment comprises inner and outer cylindrical casings 36, 29 between which is disposed a ring of separate flame tubes 31 each having a conical upstream end wall 32 and fuel injector 42. The compressor outlet passage 10 is formed between cylindrical walls 11, 12 and connects with a similar passage 16 formed by walls 18, 19 having straightener vanes 17. The outlet 16 is connected to a ring of separate diffuser passages 22 each having an inlet 23 in the shape of a sector of an annulus and an outlet 24 of substantially circular shape, the passages being disposed so that the inlets 23 together form a substantially annular inlet. The outlet ends of the passages are supported by a partition-plate 26 having a series of apertures 27, one for each passage 22. Air discharging from each passage 22 diverges in a conical flow path, the area of which is the area of the surface of revolution generated by an element 33 which represents the shortest distance between the perimeter of the outlet 24 and the fuel injector 42. In order to provide a substantially uniform reduction in pressure through the diffuser passage 22 to the entrance to the space around the flame tube, the area of the surface of revolution 33 must be between one and a half times to twice the area of the outlet opening 24. A baffle-plate 47 is disposed within the flame tube downstream of inlet openings 46 in the end wall 32. Air inlets to the flame tube are also provided at 51, 52; interconnector pipes 44 are provided between flame tubes.
Patent GB-795084-A (GB)
Title: A machine for manufacturing barbed wire
IPC: B21F25/00
Filed: 1956-05-14
Abstract: 795,084. Barbed wire. SCHREIBER, R. M. May 14, 1956. No. 14914/56. Class 45. [Also in Group XXII] Two strand barbed wire is formed by feeding barb-forming wires #, #<SP>1</SP> between two core wires s and t, cutting barb lengths v, v<SP>1</SP> from the wires #, #<SP>1</SP> and twisting the wires s, t together, the barbs v, v<SP>1</SP> being thus twisted therearound.
Patent GB-561923-A (GB)
Title: Improvements in or relating to electric switches suitable for operation by the passage of road vehicles
IPC: G08G1/02
Filed: 1943-09-09
Abstract: 561,923. Retractive switches. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and ALLISTER, C. M. Sept. 9, 1943, No. 14925. [Class 38 (v)] A pneumatically-operated switch suitable for operation by the fluid pressure caused by the passage of road vehicles over a resilient tread member with a fluid cavity comprises a diaphragm 14 which supports a spiral spring 15, the centre of which carries a contact 20 adapted to be moved into engagement with a fixed contact 21 when the fluid pressure entering at 12 increases. A small air leak hole may be provided in the diaphragm to equalize air. pressure on its two sides should vehicle come to rest on the tread member. Specification 512,836 is referred to.
Patent GB-110552-A (GB)
Title: Improvements in Multiple-sole-glueing Presses for use in the Manufacture of Boots and Shoes.
IPC: E06C7/42
Filed: 1917-10-16
Abstract: 110,552. Atlas-Werke Pohler & Co. . Sept. 9, 1916, [Convention date]. Sole-laying.-A number of presses for cementing or glueing soles are mounted between arms radiating 'from a carrier 5, each press comprising a rotatable work-support 7 and a press spindle 6 operating through a yoke-piece 8, and a number of these carriers 5 are rigidly mounted on a shaft 10 journaled between standards 11, which support a bonnet-shaped casing 12 adapted to be. heated by steam or electricity and fitted with an exhaust fan 14. The shaft 10 may be intermittently rotated by hand, or by a worm and wheel 20, 21 controlled from a shaft 22 through a clutch and treadle mechanism shown in Fig. 2. The operator applies boots to a horizontal row of presses and .then depresses the treadle to cause the shaft 10 to rotate a step, so as to carry the boots into the heated casing and to move the next row of presses, the boots in which have been dried during their passage through the casing; into position for unloading and re-loading.
Patent GB-136139-A (GB)
Title: Improvements in or relating to Matrix Holders for Type-casting Machines.
IPC: B41B7/04
Filed: 1919-06-13
Abstract: 136,139. Lanston Monotype Corporation, (Assignees of Indahl, M. C.). Nov. 30, 1918, [Convention date]. Type-casting machines. - Matrix-holders for single matrices for use in casting sorts in machines such as described in Specification 8633/99 are so constructed as to be easily adaptable for matrices of varying size. The device consists of a main frame 5 equipped with a handle 11 and with ribs 6, and adapted to be slid into a sheath member secured on the machine or into the usual die-case frame. The frame 5 has an aperture to receive an exchangeable supplemental frame consisting of two members 9, 9<a>, the member 9 having a matrix cell M notched in one edge and the member 9<a> abutting against this edge to close the cell. The frame is secured in position by a removable pin 12 having a locking-detent 18, the pin serving as a pivot about which the member 9 can turn to enable the matrix to be changed. The member 9 has plates 15, 16, Fig. 2, the upper of which fits into the grooves in the sides of the matrix. The members 9, 9<a> may be permanently secured together while capable of relative movement about a pivot.
Patent GB-1501787-A (GB)
Title: Process for the production of etherified methylol-aminotriazines
IPC: C08G12/42
Filed: 1976-04-13
Abstract: 1501787 Non-woven fabric CASSELLA FARBWERKE MAINKUR AG 13 April 1976 [15 April 1975] 15056/76 Heading D1R [Also in Divisions B5 and C3] Fleeces, e.g. of polyester fibres, may be sprayed with solutions of methylolaminotriazines having 0.7n to 2n methylol groups per molecule, 30-60% of which are etherified, n being the number of amino groups per molecule, obtained by heating the aminotriazine with 0.7n-3n mols/mol of formaldehyde and 2n to 10n mols/mol of a C 1-4  alkanol or alkoxyalkanol and 0-5n mols/mol of water, in the presence of an acid at pH 3-6.5 and 80-130C under a pressure of at least 0.1 atmosphere (gauge). In Examples 1-47 melamine (benzoguanamine in Ex. 42 and 47) is heated with paraformaldehyde and/or formalin and methanol (methoxyethanol in Ex. 32, isobutanol in Ex. 34, npropanol in Exs. 43-45, and n-butanol in Ex. 46) and optionally added water, in the presence of p-toluenesulphonic acid or nitric acid (formic acid in Ex. 38) at 90-110C and 1.4-3.5 atmospheres (gauge); the products are neutralised with Na 2 CO 3  and NaHCO 3  and contain 65-95% solids and 26-6 methylol groups and 1.4-2.8 ether groups per melamine molecule. In Examples 48 and 49 the product solutions are sprayed, alone or with an acrylate polymer dispersion, onto polyester fleeces. 1501793 Stop motion: damping oscillation of pivoted thread guide EVOLUTION SA 11 Feb 1976 [15 April 1975] 05271/76 Heading D1D Apparatus for stopping a textile winding or processing machine or an interruption of running yarn comprising a housing, a yarn guide pivoted on the housing, a switch, means to apply a restoring force to the yarn guide to pivot it to actuate the switch, the arrangement being such that yarn tension holds the guide out of contact with the switch, and a magnet mounted on the housing to act on the guide to partially balance the restoring force thereby preventing transient fluctuation in yarn tension from allowing the guide to pivot to operate the switch. S-shaped lever 28 is pivoted anti-clockwise about axle 30 by adjustable weight 42 and pivoted, clockwise by the tension of yarn 38 running over lever roller 36 and by permanent magnet 50. With a large decrease in yarn tension, or with yarn breakage, weight 42 pivots lever 28 to actuate stop microswitch 14 via lever 52 which is spring pressed against lever 28. Weight 42 may be assisted by springs. At least part of lever 28 may be ferromagnetic. Three levers 28 (Fig. 1 not shown) are mounted in a housing comprising sheet metal cover 20 and plastics angle 18. Air gap 51 is maintained between the lever and magnet. Lever 54 is used to lock unused lever 28 in its operating position.
Patent GB-457597-A (GB)
Title: Improvements in or relating to speed supervising devices for railway vehicles, operated from the track
IPC: B61L3/00
Filed: 1936-05-28
Abstract: 457,597. Train -control apparatus. VEREINIGTE EISENBAHN - SIGNALWERKE GES., Blockwerk, Siemensstadt, Berlin. May 28, 1936, No. 15131. Convention date, June 8, 1935. [Class 105] The invention relates to train control apparatus of the type in which a gradually decreasing speed limit is imposed in accordance with the distance travelled after the train has passed an active control point where the apparatus is set into operation, the arrangement being such that if the actual speed exceeds the imposed limit an automatic braking ensues. According to the present invention the apparatus is arranged so that the automatic braking arises only if the speed limit is being exceeded while the train is passing further active control points. Thus if a train enters a section under a caution signal and the signal changes to the clear aspect (track control not active) the train may accelerate in spite of the speed-limit mechanism of the apparatus still being in operation. The apparatus is able to give correct control in spite of the changes arising with reduction in diameter of the train wheels due to wear. The apparatus comprises a speedometer 11 having a drum 13 on which is provided a contact surface 16 to co-operate with a contact pin 19 carried on a rack 21 which is moved downwardly by gearing 22 ... 26 driven from a train-wheel axle 15. At an active track control point the relay 29 is briefly dropped to close contact 28 whereby a magnet 27 clutches in the gears 23, 24 to start the speed-limit mechanism into operation. If the speed limit is exceeded the speedometer drum presents the insulated area 17 to the contact pin 19 and so opens one branch to the brake-valve magnet 20 which however remains energized unless at the same time an active control point on the track causes the relay 29 to open the contact 30 in the second branch to the brake-valve magnet 20. The drum contact surface 16 has a stepped boundary to compensate for wheel wear. With worn wheels the rack will have descended too far by the time a control point is reached and so with an unstepped contact surface the contact pin 19 would have left the contact surface 16 and opened the branch to the brake magnet 20 notwithstanding that the actual speed of the train is still a safe one. The apparatus may be arranged so that a continuous speed control is imposed during the first part of the travel subsequent to the initiation of the operation. To this end the second branch to the brake magnet 20 is modified, as shown by the dotted lines 37, to include a contact 33 which is closed by a cam 35 only after a certain downward movement of the rack 21 has taken place. An additional track control may be provided to restore the apparatus to its initial condition : such additional control point may be reached during the period of continuous speed control.
Patent GB-296744-A (GB)
Title: Treatment of ores or the like containing platinum
Filed: 1927-06-07
Abstract: 296,744. Smith, S. C. June 7, 1927. Treating ores to remove undesired constituents. -In a process for recovering platinum and other precious metals from ferruginous sulphide ores, the ore is treated to remove silica, and the resulting matte, comprising principally copper sulphide, is treated with acid to dissolve iron and nickel: the leached matte is then roasted and the product is treated with acid whereby most of the copper and of any remaining iron and nickel are dissolved. The resulting residue is treated for the extraction of platinum, for example by the process described in Specification 289,220.
Patent GB-457331-A (GB)
Title: Improvements in fluoroscopes
IPC: G02B27/02
Filed: 1935-05-25
Abstract: 457,331. R÷ntgen -ray fluoroscopes. WAPPLER, F. C., 450, Whitlock Avenue, New York, U.S.A. May 25, 1935, No. 15290. [Classes 97 (i) and 98 (i)] A fluoroscope, particularly useful for dental work, comprises a fluorescent screen fitted in a light-tight casing containing the objective of a telescope attached to the casing, so that the screen can be viewed from a remote point. As shown, the devicecomprises a conical metal casing 1 to which are secured by a screwed ring 12 a fluorescent screen 10 as of paper coated with a fluorescent layer, to which is glued a protective disc 11 as of aluminium or synthetic resin, the joint being rendered watertight by cement. The casing has a housing 2 terminating in a sheath 3 which receives the objective end of a telescope 4, the tube of which is located in correct angular position by the engagement of a pin 17 thereon with a hole 18 in the sheath, and is secured by a screwed collar 16. Other methods of securing the telescope are described. The objective comprises a hemispherical lens having preferably a concave surface 8 facing the screen 10, a silveredinclined plane reflecting surface 9, and a convex surface facing the eyepiece 19. Between objective and eyepieces there are lenses which may include provision such as an Amici prism for correcting any inversion of the image. The eye of the observer is protected from the X-rays owing to the fact that these are not reflected by the mirror 9 but pass straight on ; but as additional precautions, any of the lenses may be made of lead glass, and a lead glass screen may be mounted round the telescope or its sheath 3.
Patent GB-378843-A (GB)
Title: Improvements in and relating to machines for labelling bottles or other articles
IPC: B65C9/36
Filed: 1932-05-30
Abstract: 378,843. Labelling-machines. MERCER, C. A., 10, Euston Buildings, George Street, London. May 30, 1932, No. 15335. [Class 73.] In a machine for labelling bottles &c. having sharp corners, means are provided for pressing the edges of the previously applied labels into contact. The machine is of the kind in which the labels are applied by adhesive pickers, the applied label being preferably held centrally by a grip finger while its sides are wiped. The bottles x are fed by an intermittentlyoperated conveyer 3, the pickers. 4, grip finger 16, and wipers (not shown) being operated from a cam shaft 7. The bottles, with the labels applied, pass under sponge rubber pads 30 carried by a lever 26, which is operated by a cam lever 20 with the grip finger. To hold the leading bottle in position, a spring member 36 having jaws 37 is provided, which is moved into and out of engagement with the leading bottle by a member 43 operated in synchronism with the pasting roller arm 11.
Patent GB-453004-A (GB)
Title: Improved method of and means in the manufacture of piston rings
IPC: B30B1/32
Filed: 1935-05-27
Abstract: 453,004. Making piston rings. LOCKWOOD & CARLISLE, Ltd., and HOPKINSON, J., Stalker Lees Road, Sheffield. May 27, 1935, No. 15337. [Classes 83 (ii) and 83 (iv)] Piston-rings are made by first cutting a solid ring from a cylindrical body, slotting the ring by removing the minimum of metal, expanding the ring 1 over an annulus 2 which is shallower than the ring, and beating the ring on both its flat surfaces with a hammer as indicated at 5, the ring being mounted on a flat surface 3. The ring is beaten over a zone opposite to that of the split part and preferably near its inner periphery. Part of the annulus may be deeper than the ring so as to mask the part that is not to be beaten.
Patent GB-387208-A (GB)
Title: Improvements in or relating to thermostatically controlled heating systems
IPC: F02N19/10
Filed: 1932-05-30
Abstract: 387,208. Thermal switches ; switches partly electromagnetic. ELLIOTT, A. D., Marryott House, Woodbridge, Suffolk. May 30, 1932, No. 15338. [Class 38 (v).] In a thermostatically-controlled switch for use in connection with a heating system for internalcombustion engines on vehicles, fixed contacts D<2> co-operate with movable contacts D<4> carried at the free end of a soft-iron armature D<5> movable between the poles of and articulated on a bracket D7 secured to a magnet E. The contacts are operated to obtain a snap-over action against the action of the magnet by a deformable fluid-filled capsule F adjustably mounted on a baseplate D<1> through the intermediary of a plate spring F<5>. The capsule carries a bolt F<1> passing loosely through the armature D<5> and provided with bearing-nuts F<2>.