baber/WOPTO huggingface dataset:
Patent GB-617402-A (GB)
Title: Improvements in mine roof testing
IPC: G01M5/00
Filed: 1946-09-30
Abstract: 617,402. Testing the safety of mine roofs. GENERAL REINSURANCE CORPORATION. Sept. 30, 1946, No. 29159. Convention date, Oct. 25, 1945. [Classes 40 (i) and 118 (ii)] [Also in Groups XIX and XXXIX] In mine roof testing apparatus for measuring compression waves transmitted through rock from test stations, there is a low-frequency amplifier, a compression wave detector, and an indicating-device, the amplifier including a compensator comprising pre-calibrated means for changing the gain of the amplifier in a given number of steps corresponding to the differences in attenuation of compression wave transmission through the rock at the same given number of respective test stations located at predetermined distances from the detector, whereby the indications of the apparatus will be substantially constant when indicating waves originating at any of said stations at substantially equal amplitude and transmitted through rock of substantially uniform strength. An electric pick-up 4 of the piezo-electric or crystal type is placed in the rock roof in a known safe position, and is connected by a long cable 6 to an amplifier box, including a meter, which is strapped to the operator. The operator uses a percussion hammer to strike.a blow on the roof in the vicinity of the pick-up, adjusts the meter reading to a maximum, and then proceeds to other positions and notes the meter readings after striking the roof with blows of the same intensity. The amplifier is battery-operated and comprises three valves of the hearing-aid type, the valves V1 and V2 being double tetrodes, resistance-capacity coupled to provide substantially linear amplification of five stages. The valve V3 is a pentode, the output of which is connected to a resistor R15 connected through a coupling condenser C8 to a D.C. instrument 22 in circuit with a full-wave copper-oxide rectifier. Means may be provided for checking the output by an oscilloscope or telephone receiver. Values of the resistances and condensers are given for a typical amplifier. To suit the characteristics of the rock in the mine and to compensate for test distances from the pick-up 4, a compensator 27 is included comprising a variable resistor R6, R7, R8 connected in series between the slider of potentiometer resistor R5 and the first control grid of valve V2. At each point of switch S1 the gain of the amplifier will be increased to compensate for the attenuation in compression wave transmission through the rock between detection point and test stations at specified distances therefrom.
Patent GB-1318641-A (GB)
Title: Method of pressing connector members onto elongate structural  elements
IPC: B21K25/00
Filed: 1970-06-16
Abstract: 1318641 Jointing by forging, extruding L R ZAMORANO 16 June 1970 [17 June 1969 (2) 4 March 1970] 29163/70 Headings B3H and B3P [Also in Division D1] A connecting member, such as a ferrule 10 is squeezed on to a wire, rod or cable 11 by a method comprising inserting the cable into an axial bore of the connector, inserting the assembly into an extruding cavity formed by a plurality of removable discs 17, 18 through the outlet thereof, forcing the assembly through the extruding cavity, releasing the force applied, removing the dies from their extruding position, and removing the assembly through the outlet of the extruding cavity. Fig. 12 shows apparatus for extruding a threaded connector 229 on to a cable 219 comprising an hydraulic cylinder 227 with a tubular piston 226 containing guides 228, 231 for the connector. The die pieces 238, 239 are retained in a conical cavity by a spring 232, and are displaced to permit removal of the extruded assembly by a part annular tool (Figs. 16 and 17, not shown).
Patent GB-1388734-A (GB)
Title: Single crystal magnetic transducer heads
IPC: G11B5/133
Filed: 1972-06-21
Abstract: 1388734 Magnetic heads SONY CORP 21 June 1972 [28 June 1971 (2)] 29167/72 Heading G5R In order to minimize the possibility of breakage and cracking at the edges adjacent the transducing gap in a magnetic head, a single crystal spinel type ferrite head has the surface which defines the gap depth lying in the range of axes from <111> through <122> to <011>. In the head shown in Fig. 4A, the gap plane 4-15 and the record facing surfaces 4-11, 4-12 lie parallel to <100> axes, and the gap depth defining surface 4-16 lies parallel to the <110> axis, but in that of Fig. 5A (not shown), the respective orientations are gap plane <100>, record facing surface <110>, gap depth surface <111>; in that of Fig. 7A (not shown), the corresponding directions are <110>, <211>, <111>. In the head shown in Fig. 9A, and in those of Figs. 10-14 (not shown), the gap depth defining surface lies perpendicular to the gap plane, and directions specified include <100>, <110>, <111>, <112>. In all cases, the chosen crystallographic direction for the gap defining surface is one of low KNOOP hardness. Heads may be constructed by joining a sheet 76, Fig. 8C, to a second sheet 52a which has been grooved in two orthogonal directions (as in Figs. 8A, 8B, not shown), and then slicing along lines 83-89.
Patent GB-464768-A (GB)
Title: Improvements in or relating to modulating systems for wireless apparatus
IPC: H03C1/00
Filed: 1935-10-23
Abstract: 464,768. Valve modulating circuits. SCHUCHTER, K. Oct. 23, 1935, No. 29193. Convention date, Sept. 12. [Class 40 (v)] To increase signal range, the carrier oscillations produced by the back-coupled valve 1, Fig. 1, are modulated twice by the same signal, which is applied first from a microphone 8 to the grid, and then, after amplification, as a variable load on the main oscillatory circuit 4, 5. The low-frequency components resulting from the grid modulation are transferred at 11 to a shunt-circuit coil 13, which is in series with a rectifier 12 and is coupled to the coil 5 and variably damps the circuit 4, 5, by absorption. In Fig. 2, switches 14, 15, 16 enable the valve 1 to be used either for transmission or reception. Alternatively the microphone voltage may be applied to one of the grids of a tetrode valve, the other grid being connected to the main oscillatory circuit. The first modulation may also be applied as a variable load to the main oscillatory circuit, instead of coupling the microphone directly to the grid. The second modulating circuit may be directly connected in shunt to the circuit 4, 5.
Patent GB-1069589-A (GB)
Title: Hub for releasaby holding a reel
Inventor: ME ISIDORUS DIONISIUS MARIA FR
IPC: B65H18/04
Filed: 1965-07-09
Abstract: 1,069,589. Connecting reels to hubs. INTERNATIONAL STANDARD ELECTRIC CORPORATION. July 9, 1965 [July 13, 1964], No. 29204/65. Heading F2U. A hub for releasably carrying a magnetic tape or other reel comprises a housing 2 connected to a driven shaft, Fig. 3 (not shown), and having a cylindrical part and an -integral radial flange 5, and members 28, 29, 30 slidable in slots 18, 19, 20 in housing 2 being biased, by leaf springs 40, 41, 42 fixed to the housing and engaging pins 34, 35, 36 carried by members 28, 29, 30, into engagement via loosely carried balls 37, 38, 39 with a cam 48 freely carried by a part 57 of the driven shaft. An overcentre spring 65 biases the cam into two positions defined by slot 59 and a pin 8 fixed to housing 2 corresponding to the positions in which members 28, 29, 30 are projected into corresponding grooves in a reel or against a smooth inner surface of a reel and in which they are withdrawn. The cam is rotated by a knob connected to the cam by screws 67, 68. Each member 28, 29, 30 has a hooked end to prevent axial removal of the reel when they are moved radially outward; each member has an enlarged central portion guided in enlarged portions of slots 18, 19, 20, Fig. 2 (not shown).
Patent GB-381350-A (GB)
Title: Improvements in devices for the adjustment of receiving sets for wireless waves
IPC: H03J1/04
Filed: 1931-10-21
Abstract: 381,350. Adjusting wireless apparatus. ROUTIN, J. L., 2, Rue du Capitaine Olchanski, Paris. Oct. 21, 1931. Convention date, Nov. 5, 1930. [Class 37.] A number of readily detachable station indicators, Fig. 5, are secured in groups corresponding to the wavelength ranges on cylindrical or disc supports provided with graduated scales co-operating with the indicators, the groups being protected by detachable screens which expose only the indicators in use. In one construction, Fig. 2, the station indicators are clipped into grooves on cylindrical members 9 the portions 9a of which project through the panel 1 and are protected by detachable screens 19. The screens are provided with windows 23 and the members 9 are illuminated by lamps 25 which are connected by pins 28 in the circuit of the wave-changing switch. The screens may have advertisements thereon and these are illuminated by the lamps. In another construction, Fig. 7, the station indicators are hooked into grooves 38, the other end of each indicator being sprung over the periphery of the support 39 which mav be constructed as a hollow truncated cone. The screen 40 is detachably secured to the panel by a spring member 54, 55 engaging its inturned edges 58, 59 after the manner of a bayonet-joint. In a further construction, Fig. 9, the indicator clips are located on drums 102, 103 which are associated with calibration curves 114 .. 117 detachably mounted on drums 110, 111. The curves and pointers 106, 107 provide a fine adjustment to the coarse chain gear 118 .. 122 by way of a lever 108 for operating an auxiliary condenser 109.
Patent GB-513770-A (GB)
Title: Improved apparatus for indicating tension or load on cables
IPC: G01L5/08
Filed: 1938-10-10
Abstract: 513,770. Tension indicators for ropes. RAPHAEL, H. A. Oct. 10, 1938, No. 29312. Convention date, Oct. 13, 1937. [Class 106 (ii)] Comprises a device for measuring the pull on a rope 5, especially the load on the cable carrying well drilling apparatus, and consists in clamping a section 6 of cable at the ends 7 to spaced points on the rope 5 and placing between the cable section and rope intermediate the said points a hydraulic spreader strut 8 communicating with a pressure gauge 21. The strut 8 comprises, a cylinder 9 with flanged ends 10 to which are clamped rubber diaphragms 14 by flanged end caps 12. The caps contain pistons 23 engaging the diaphragms, the piston stems 24 passing outwards through the caps, one stem being clamped to the rope or cable 6 and the other shaped to engage the cable. When the rope is tensioned the pistons are pressed inwards and move the diaphragms to compress the fluid in chambers 15 and passages 16 and 17, the compression being indicated on the gauge 21.
Patent GB-934737-A (GB)
Title: Improvements in or relating to sampling apparatus
Inventor: DICKINSON RONALD WILLIAM
IPC: G01N1/14
Filed: 1961-08-14
Abstract: 934,737. Sampling liquids. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. July 17, 1962 [Aug. 14, 1961], No. 29342/61. Class 106 (5). Samples of radio-active liquid are drawn at intervals from a main stream 8 by means of air pulses from a pump 5 forcing liquid into a collection chamber 10 which is emptied through a syphon 19 after a spot sample has been extracted from the accumulation. Liquid from the stream 8 enters a pulse chamber 2 by way of an orifice 7 and, when the chamber is supplied with a pulse of compressed air from pump 5, some of the liquid escapes through the orifice 7 and some is ejected into the collection chamber 10 by way of delivery chamber 3 and delivery pipe 9. Collected samples are mixed by a stirrer 14 and excess liquid is drained by overflow pipe 13. A spot sample is collected from the chamber 10 by means of the evacuated bottle technique described in Specification 776,617. To clear the chamber 10 a manual pump 21 is operated to reduce the pressure in tank 20 causing the syphon 19 to be primed and discharge the surplus from chamber 10 into the waste pipes 16, 17. The level of the accumulated samples is monitored by an indicator 23. An inlet pipe 11 allows the chambers 2, 3 and 10 to be flushed clean. A practical form of the invention is described with reference to Fig. 3, not shown, and has a containment vessel through which the stream 8 flows and which may be emptied by steam and flushed. The apparatus is contained within a biological screen.
Patent GB-693030-A (GB)
Title: Axleboxes
Inventor: SINCLAIR FREDERICK WILLIAM
IPC: B61F15/26
Filed: 1951-12-14
Abstract: 693,030. Axle boxes. GLOUCESTER RAILWAY CARRIAGE & WAGON CO., Ltd. Dec. 14, 1951, No. 29370/51. Addition to 670,919. Class 12 (i). In a retaining device for an axle box lid according to the parent Specification, the lift arms are dispensed with and the lid L is articulated to the axle box A by means comprising a cover-plate 18 for the retaining mechanism. One end of the cover-plate 18 is hinged at 2 to a bracket 3 attached to the axle box, and the other end of the cover-plate is hinged at 9 to a bracket 8 on the lid L.
Patent GB-1090667-A (GB)
Title: Elastomeric butadiene polymer
IPC: C08F36/04
Filed: 1965-07-12
Abstract: A process for producing a rubbery polymer of butadiene-1,3 having less than 25% of the butadiene units in the 1,2-structure and having 25 to 40% of the butadiene units in the cis-1,4 configuration comprises contacting butadiene-1,3 with a polymerization catalyst formed by admixing a halide of tetravalent titanium and metallic lithium, lithium hydride or a lithium hydrocarbon compound, the molar ratio of lithium to titanium being at least 5:1.  The polymer is substantially gel-free and has an intrinsic viscosity c  of 1.0 to 3.0 when measured in toluene at 30 DEG  C. and a Mooney viscosity (ML-4-100 DEG  C.) not less than 5.6x[c ]2.6.  The polymerization mix may contain up to 25% of another vinyl compound.  Mentioned are mixtures of said catalyst components, the titanium compound optionally having an organic substituent, and polar organic liquids capable of complexing the lithium compound may be present; a diluent for polymerization, which may be continuous, is optional.  In examples, polymerization is effected of butadiene \sBstyrene in benzene or n-hexane using n-butyl lithium and TiI4, TiCl3I, TiCl4, and optionally with Et2O, Et3N, MeI present.  The product is recovered by precipitation with EtOH containing di-t-bu-p-cresol, followed by vacuum drying.  Vulcanization of a composition of polymer, optionally natural rubber, C black, aromatic petroleum oil, stearic acid and zinc oxide is effected, using sulphur and N-cyclohexyl-2-benzothiazole sulphenamide.
Patent GB-735931-A (GB)
Title: An improved arrangement for carrying out continuous processes on long rigid articles
Inventor: SPENCER JAMES ARTHUR
IPC: B21C37/08
Filed: 1950-12-01
Abstract: 735,931. Automatic control systems. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Nov. 30, 1951 [Dec. 1, 1950], No. 29499/50. Class 38 (4). [Also in Group XXII] Apparatus for effecting a continuous two-stage process on long rigid work, e.g. a tube, rod or electric cable, has feeding means at each stage, one feeding means being mounted on a carriage movable in the line of feed against a centralizing force, and control means, operated by movement of said carriage from its central position, to adjust the rate of one of said feeding means so as to cause the carriage to move towards its central position. In the apparatus shown an insulated cable core 2, Fig. 1A, is guided by rollers 38, 39, 37 into a trough T of aluminium made from a flat strip 3 by rollers 28, 29. The trough T is closed around the core 2 by a die 31 to form a tube 4 and the seam is welded by a torch 32. The work is fed by two endless belts 40 driven by a motor 7. All this apparatus, except the rollers 37 ... 39, is carried by a frame 13 suspended by arms 17 and flat springs 18, 19 from a fixed frame 16 so as to be free to swing in the axial direction of the tube 4. This is pulled through a die 5 to reduce its diameter by drum 8, Fig. 1B, driven by a motor 9 through variablespeed gearing 10 adjustable by a motor 11. If the means 40 feeds the tube 4 at a rate greater or less than it is drawn through the die 5 the frame 13 is moved to the right or left and closes one or other of two switches to drive the motor 11 in the direction to cause the drum 8 to rotate more or less rapidly as the case may be. Excessive movement of the frame 13 operates switches to bring the whole to rest. The frame 13 may be supported in other ways and have means for locking it when required. Other feeding and speed controlling means may also be used.
Patent GB-1103933-A (GB)
Title: Improvements in or relating to fuel ignition in turbo-jet engines
IPC: F02C7/264
Filed: 1965-07-13
Abstract: 1, 103, 933. Jet propulsion plant; reciprocating pumps. M.A.N. TURBO G.m.b.H. July 13, 1965 [July 15, 1964], No. 29748/65. Headings F1A and F1J. A gas turbine jet propulsion engine has a reheat igniting arrangement comprising two nozzles one of which is mounted in the combustion chamber upstream of the turbine to produce a "hot streak" which ignites the second nozzle in the jet pipe downstream of the turbine thus igniting the adjacent reheat nozzles. Fuel is supplied to the ignition nozzles by a device comprising a charging piston 3 movable in a cylinder 2. When reheat ignition is required, a hydraulic pressure is applied to the left of a piston 13 displacing the piston to the right against a spring 15. This allows valve 11 to move off its seat and place high-pressure fuel line 200 in communication with the right hand side of charging piston 3 by way of chamber 20 and passage 21. Piston 3 is thus forced to the left to urge fuel through non-return valve 5 to the ignition nozzle in the jet pipe and, an instant later, through annular groove 25 and non-return valve 8 to the ignition nozzle upstream of the turbine. As piston 3 moves further to the left it obturates valve 8 but continues to force fuel through valve 5 until it reaches a position, Fig. 2 (not shown), in which it opens a valve 7 to allow the remaining fuel to flow out from cylinder 2 into the engine low-pressure fuel system 100. The position of annular groove 25 is such that the "hot streak" through the turbine is prevented from burning too long and the issuing of unburned fuel from the nozzle in the jet pipe is prevented. For recharging the device, pressure is removed from the left of piston 13 so that spring 15 relaxes, thus closing valve 11. Spring 4 then returns piston 3 to the right hand end of cylinder 2 thus drawing in low-pressure fuel through a non- return valve 6. Cooling is effected by fuel flowing through bores 22, 23 and 24.
Patent GB-617817-A (GB)
Title: Improvements in or relating to gun perforators particularly for perforating well casings
IPC: E21B43/116
Filed: 1946-10-09
Abstract: 617,817. Perforating well casings. BYRON JACKSON CO. Oct. 9, 1946, No. 30132. Convention date, Oct. 13, 1944. [Classes 9 (i) and 92 (ii)] [Also in Group XXII] A gun particularly for perforating well casings comprises a gun-bore, a projectile in the bore being driven rearwardly to detonate a propelling charge behind the projectile, when an explosive charge in the muzzle end of the bore is ignited. The body 10 of the gun perforator is lowered into the well by a cable through which an electrical conductor 12 passes to an adapter 11 where it is connected to a second conductor 14 leading to an electrical fuze 15 arranged to ignite an explosive fuze element 16 placed in a longitudinal groove 17 in the body 10. The groove 17 extends across the muzzles of a number of laterally directed coplanar gunbores 19 containing a powder charge 20 behind a fluid-tight seal 22 in front of which is a bullet 21. The fuze element 16 extends in a loop 23 into the muzzle of each gun-bore where it is held by a flat wedge 25. When ignited by the electrical fuze 15, the fuze element 16 explodes almost instantaneously forcing the bullets 21 back against the powder charges 20 to detonate the charges. The fuze element 16 may be carried straight across each muzzle instead of being looped as described. Penta erithritol tetranitrate may be used as the core of the fuze element 16. Alternative fillings are " Primacord," " Mericalcord " and " Cordeau." The cross-section of the gun body 10 may be circular or rectangular. Modifications of the arrangement of the gun bores 19 in the body 10 are described. Additional detonating elements may be placed in the muzzle of each gun bore. To increase the force of the detonating explosive each muzzle may be sealed with a quick-drying cement. One modification has detachable gun barrels held by snap rings in sockets in the body of the apparatus. In the modification shown in Fig. 9 an explosive charge 40 is placed in the bore 19f in front of the bullet 21 and sealed by a disc 41. A longitudinal hole 42 intersects the bores 19f and is filled with a powder ignited by an electrical fuse 15f. Screw plugs 44 having transverse passages 45 are screwed into the hole 42 immediately above and below each bore 19f to prevent dissipation of the energy of the explosive 40 when it is exploded.
Patent GB-1409165-A (GB)
Title: Workpiece feed checking device in a polygraphic machine
IPC: B65H7/14
Filed: 1973-06-26
Abstract: 1409165 Handling thin material POLYGRAPH LEIPZIG KOMBINAT FUR POLYGRAPHISCHE MASCHINEN UND AUSRUSTUNGEN VEB 26 June 1973 [27 June 1972] 30206/73 Heading B8R [Also in Division G1] A checking device in a polygraphic machine provided with a feed path for conveying material in the form of a continuous web or discrete workpiece comprises a light source 8 at one checking location 6, a photo-electric sensing device 9 at a further checking location 7, a light guide, e.g. optical fibre 11 interconnecting the checking locations and a control unit 10 responsive to electrical signals derived from the device 9, for example if a sheet is fed obliquely, as sheets 3<SP>1</SP>, 4<SP>1</SP>, to stop the machine, actuate an indicator device or actuate a sorting shunt. The device may be applied to sheet length checking or sheet feed timing checking, Fig. 2 (not shown). In the embodiment of Fig. 4 (not shown), the device detects slanting fold formation and inaccurate longitudinal folding by use of one checking location (34) for width check and the further location (35) for a length check. Feeding a folded sheet aslant to a stack (36) is detected, Fig. 5 (not shown), by arranging the one location (37) at the expected width of the stack and the further location (38) at the expected height.