baber/WOPTO huggingface dataset:
Patent GB-1435502-A (GB)
Title: Presence or proximity detectors
IPC: G01V3/10
Filed: 1972-02-01
Abstract: 1435502 Metal detector circuits METTOY CO Ltd 30 April 1973 [1 Feb 1972] 4645/72 Heading G1N In a detector in which the frequency of an oscillator is varied in response to the proximity of metal, a signal representative of the variation in frequency controls the frequency of oscillations of a further oscillator. A heterodyne circuit may be employed, Fig. 1. The proximity of ferro-magnetic and conductive material results in an increase and decrease respectively of the inductance L 1 in the tuned circuit of a transistor Trl oscillator. The output of oscillator Tr1 beats in transistor Tr2 with the output from a variable frequency oscillator Tr4 applied to the base of transistor Tr2 and the beat frequency is applied via closed switch SW3 and diode Dl to the base of transistor Tr5 crosscoupled with transistor Tr6 to form a low frequency 500-1500 Hz oscillator. Each pulse from transistor Tr3 switches on the low frequency oscillator to energize an earpiece &c. O/P and the frequency of these oscillations being higher the higher the voltage across capacitor C9 which is dependent upon the pulse rate of the pulses rectified by diode Dl. Setting up Initially switches SW 1, SW2 are closed and SW3 opened and a coarse tuning rod varied to alter the inductance of L2 so as to make the difference frequency as small as possible. Switch SW3 is then closed and SW2 opened and a fine timing wheel, Figs 2, 3 (not shown), adjusted until the output from the low frequency oscillator has the lowest possible frequency. The apparatus may be portable.
Patent GB-919916-A (GB)
Title: Improvements in automatic lathes
IPC: B23Q1/54
Filed: 1961-02-08
Abstract: 919,916. Automatic lathes; drilling attachments. BECHLER, A. Feb. 8, 1961 [Feb. 12, 1960], No. 4677/61. Class 83 (3). An automatic lathe is provided with a work transfer arm 8, Fig. 1, which is cam-controlled for pivotal and axial movements. A workplace 6 is severed from a bar 7 and the reverse side is operated on when the transfer arm moves the workpiece successively to rotary tools 21, 20, which may be a drill and a tap. The tools are mounted in a drum 17, Fig. 2, carried by a ring 14 which is adjustably mounted in a bracket 11. This adjustment enables the distance between the centre of the drum and that of the pivot to be varied. Additionally, the drum 17 is adjustable about its own centre by means of pointed grub screws 27, 28.
Patent GB-774291-A (GB)
Title: Improvements relating to the brazing of molybdenum and molybdenum-tungsten alloy
Inventor: SCOTT WILLIAM JOSEPH
IPC: B23K35/30
Filed: 1954-02-18
Abstract: 774,291. Brazing. BRITISH THOMSONHOUSTON CO., Ltd. Feb. 10, 1955 [Feb. 18, 1954], No. 4831/54. Class 83 (4). In forming an oxidation resistant joint between members of molybdenum or of molybdenum-tungsten alloy or between a member of molybdenum and a member of the alloy, the members are brazed together with nickel as the brazing metal and the joint is then subjected to a siliciding process which may be the pack method disclosed in Specification 730,855, [Group XXXVI]. Molybdenum wires forming part of an electric heater element are nickel brazed into a recess in a molybdenum terminal block, e.g. in a hydrogen atmosphere using, e.g., electric arc heating. The terminal block and wires are then silicided.
Patent GB-202917-A (GB)
Title: Cleaning device for fire-arms
IPC: F41A29/02
Filed: 1923-02-20
Abstract: 202,917. Stierlin, E. Weber-. Feb. 20, 1923. Cleaning.-A cleaning-rod comprises tubular sections held together by a cord 10 passing therethrough. Slots 11 in the handle portion are provided for fixing the cord. The cleaning element comprises a piece of wire gauze placed over a yielding core or layer of resilient material. The gauze 12, Fig. 11, is formed with a hole 13 adapted to be passed over the end of the jag 6, Fig. 4, or other core, and to be secured by a nut 15 or the like. A brush 7, Fig. 1, may also be provided. Various forms of jags and expanding cores are desarmed. The gauze may be bent around the jag by pushing a metal sleeve over it.
Patent GB-760354-A (GB)
Title: Improvements in or relating to telescopic hydraulic shock absorbers
Inventor: ARMSTRONG WILLIAM
IPC: F16F9/32
Filed: 1954-02-19
Abstract: 760,354. Hydraulic shock absorbers. ARMSTRONG PATENTS CO., Ltd. Feb. 8, 1955 [Feb. 19, 1954], No. 4955/54. Addition to 657,030. Class 108(3). The shock absorber of the parent Specification has foot-valve casting 3 supported on the lower end of the pressure cylinder 6 and located upon a slug closure 4 for the outer tube 5, means associated with the casting 3 and closure 4 to prevent their relative lateral displacement, and passages 12 in the casting connecting the reservoir R and the cylinder 6. As shown, the displacement preventing means comprises a boss 4a on the casting 4 which enters within castellations 3b projecting from the annular lower surface of the casting 3. The spaces between the castellations provide the passages 12. The casting 3 has a spider portion 3d which supports a spindle 7 for a valve 8. The boss 4a may be replaced by a hollow cylinder, the interior surface of which is engaged by a member or members depending from the casting 3.
Patent GB-1378095-A (GB)
Title: Hot water cylinders
IPC: F24H1/22
Filed: 1973-02-01
Abstract: 1378095 Heating water in domestic cylinders LANGMAN ENG CO Ltd 19 March 1973 [1 Feb 1973 22 Feb 1973] 5012/73 and 8749/73 Heading F4A  A domestic hot water cylinder 40 is divided by a plate 42 into upper and lower portions, an indirect fluid heating coil 46 being disposed in the lower chamber and communication with the upper chamber being by tubes 48, 50 extending from holes 52, 54 in the plate. The tubes 48, 50 can be the same or different length and/or diameter. Cold water is fed into the cylinder via inlet 56 just below the plate, 'deflected upwardly by a deflector plate 58, and the inlet feed includes a water softening device. A thermostat 24 controls a solenoid valve on the heating coil inlet and a replacable aluminium anode 26 is provided to limit corrosion. The plate 42 is formed from a metal or plastics material or resin bonded glass fibre sheet. The cylinder and plate 42 are formed from copper or stainless steel.
Patent GB-1458335-A (GB)
Title: Vehicle with safety belt system
IPC: B60R22/04
Filed: 1975-02-06
Abstract: 1458335 Safety belt system R SATZINGER 6 Feb 1975 [18 Feb 1974] 5025/75 Heading A3V A seat belt system includes shoulder and lap belts 2, 3 connected to a tensioned strap 5 so as to hold the belts above the level of the upper surface of the seat cushion 9. Locking element 4 can be engaged with a fixed locking element 1.
Patent GB-507516-A (GB)
Title: Improvements in or relating to processes for the manufacture of carbon black from carbon-containing gases
IPC: C09C1/48
Filed: 1938-02-18
Abstract: 507,516. Carbon black. GARDNER, D. Feb. 18, 1938, No. 5087. [Class 90] Carbon black is obtained from gases containing carbon but no oxygen, which may consist of saturated hydrocarbons and which may include vaporized hydrocarbons which are solid or liquid at normal temperatures or natural gas from which any carbon dioxide has been removed, by mixing such gases with about 20 per cent by volume of nitrogen or carbon bisulphide and heating to 1000-1200‹ C. e.g. to 1030‹ C. Methane is a suitable hydrocarbon, and it may be prepared from carbon monoxide if desired, but it is essential that no oxygencontaining gas is present during the reaction. The reaction zone should be as narrow as possible and the velocity of flow should not be too great, owing to increased formation of tar and gaseous hydrocarbons. Any undecomposed gases may be recycled back to the process, and the gaseous products may be used to supply heat or for other suitable purposes. Any organic compounds formed during the reaction may be removed from tlie black by gentle heating or by means of solvents, and the reaction may be carried out under reduced, atmospheric or increased pressure. The furnace and cooling chambers may be made of graphite or carborundum.
Patent GB-290759-A (GB)
Title: Improvements in or relating to show cases
IPC: A47F3/00
Filed: 1927-02-23
Abstract: 290,759. watts, J. C., Jones, G. T., and John, Son, & Watts, Ltd. Feb. 23,1927. Show cases.-A collapsable showcase comprises a base 1, with or without a back 2, and a pair of sides 7 foldably connected thereto, there being secured to one edge of the base a transparent top or front 3, which may be flexible, and which has its other edge detachably secured to the opposite edge of the base or to the back. Modified forms have semi-circular and quadrantal sides, and the article may be constructed of cardboard with press stud fasteners 6 for the top and sides.
Patent GB-548831-A (GB)
Title: Improvements in chromium recovery
IPC: C22B34/32
Filed: 1941-04-23
Abstract: 548,831. Chromium recovery. UDY, M. J April 23, 1941, No. 5224. Convention date, Aug. 3, 1940. [Class 1 (iii)] In producing chromate from chromite compounds a chromium-bearing material such as a spinel containing ferrous oxide and alumina is first treated to increase the ratio of oxides other than chromium to the chromium and the material is then oxidized to form chromate. The process consists in fusing a ferrous chromite material associated with alumina and silica and either lime or magnesia or both, to form an altered chromite in which the ferrous oxide of the ferrous chromite is substituted by the lime or magnesia or both. The product of the fusion treatment is digested with sodium carbonate solution and the solid residue oxidized to form chromate. Mechanical, magnetic &c. methods of increasing the chromium concentrate of the solid residue may be used. Specifications 540,043 and 540,364 are referred to.
Patent GB-1132786-A (GB)
Title: Improvements in clutch mechanism
IPC: F16D27/12
Filed: 1966-02-08
Abstract: 1,132,786. Clutch combinations. ROBERT BOSCH G.m.b.H. 8 Feb., 1966 [9 April, 1965], No. 5382/66. Heading F2C. Multi-plate friction clutches K 1 , K 2  are selectively engageable to connect a driving flywheel S to gears 29, 5 of a change-speed gear. The clutches are engaged by stationary electromagnets 11, 13, the clutch K 1  having a set of plates mounted on extensions 16 of the flywheel and a driven set of plates mounted on a member 27 which is connected by a vibration damper 28 to the gear-wheel 29. The clutch K 2 . comprises a driving set of plates mounted on extensions 17 of the flywheel and a driven set of plates splined to a shaft 4. Presser plates 30, 40 of the clutches are connected to the respective extensions 16, 17 by cam-sided projections on the extensions engaging corresponding cam sided recesses in the presser plates so that when the clutch is engaged by its electromagnet the presser plate is cammed axially to increase the engaging pressure.
Patent GB-553124-A (GB)
Title: Improvements in or relating to bolts and like fastenings
IPC: F16B19/10
Filed: 1942-04-23
Abstract: 553,124. Bolts. LINDSAY, H. April 23, 1942, No. 5443. [Class 89 (i)] [Also in Groups XIX, XXIX and XXXIII] A bolt for use in bolting patches or plates on to ships' sides, bulkheads, gas holders &c. comprises a hollow internal member 9, Fig. 1, and a headed internal member 10. The member 9 is slit at 12 for expansion by the coned head 11 of the member 10 under the action of a nut 21. A tongue or slot 20 provides for holding the member 10 during the tightening of the rut. When the bolt is fully expanded a final tightening is given by the nut 15. Packing may be interposed, the nut 15 may be a lock out or an additional lock nut or lock washer may be employed. In a modification the nut 21 is small enough to permit removal of the nut 15 over it. In a further modification a conical or ball nut 11, Fig. 7, screws on a headed bolt 10 and is ribbed to engage the slots in the member 9 which is flanged at 24. To assist in the initial placing of the nut 15 before passing the unexpanded assembly through the hole a hooked gauge 16, Fig 4, with a sliding collar 18 clamped at 19 may be used to measure the combined thickness of plates, packing &c. The end of the member 9 may be coned to suit the bolt.
Patent GB-553981-A (GB)
Title: Improvements in or relating to method of and apparatus for machining a work-piece
IPC: B24B33/02
Filed: 1941-04-28
Abstract: 553,981. Machining and honing rotating work. MICROMATIC HONE CORPORATION. April 28, 1941, No. 5494. Convention date, May 3, 1940. [Class 83 (iii)] [Also in Group XXIII] Work 64 to be machined and honed is carried by a spindle 66 in a fixed headstock driven at 72 from a motor 68. A turret 32 carries a boring tool 42 and rough and finish honing tools. A motor 17 drives a pump 15 circulating oil from a sump to provide for the feeds and controls. Annular ports 34 in the turret base connect ports leading to opposite sides of a piston 57 with a pressure supply valve controlled at 37, by a cam 36 carried by the slide. The piston is adjustably connected at 54 to a wedge core 52 controlling hones 45 passing through slots in the tool. The hones are strengthened by encasement in metal sheaths 53 that provide smooth surfaces for engaging the sides of the slot and the core. During boring the valve 58 is in neutral and a a reversing valve 75 operated by contact of the turret slide with a spring plunger 39 is inoperative. The valve 59 is turned to the position shown in Fig. 6 and the pump 15 supplies pressure fluid to the left hand side of the cylinder 22, advancing the boring tool into the work. The rate of feed is controlled by throttling the escape from the right hand side of the cylinder by a needle valve 70. At the end of the cut the valve 59 is swung over counterclockwise by the stop 63 and return takes place at high speed In honing, the valve 59 is turned to neutral position and the valve 75 oscillated by a pin-and-slot by contact of the end 41 of the cam 36 with the spring plunger 39, the stroke being short enough to prevent the stop 63 from disturbing the setting of the valve 59. This is effected by hand to secure complete withdrawal when honing is complete.
Patent GB-704392-A (GB)
Title: Improvements in and relating to resonator structures in synchrotrons and the like
IPC: H05H7/18
Filed: 1951-03-07
Abstract: 704,392. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. March 7,1951 [March 30, 1950], No. 5537/51. Class 39(1) [Also in Group XL(b)] Apparatus for accelerating charged particles comprises a toroidal vessel of dielectric material disposed within a time-varying magnetic field and adapted to enclose an orbital path along which charged particles may be accelerated, and a resonator for supplying a high frequency electric field to accelerate the particles including an inner conductor formed of conductive strips 2 attached to the outer periphery of the toroidal vessel and a longitudinally sectionalized outer conductor supported by and enclosing a portion of the toroidal vessel, the outer conductor comprising sections of insulating material 6 having conducting strips 10 attached along their inner surfaces; the strips 10 in conjunction with the strips 2 form a quarter wave line at the operating frequency, and the strip construction reduces eddy currents induced by the magnetic field. As shown in Fig. 2 these may be two insulating sections 6 bolted together and they may taper at their ends, Fig. 1, to bring the strips 10 and 2 into contact. There is a gap 3 in the strips 2 to form an accelerating gap for the particles; on either side of the gap the strips 2 are short-circuited by peripheral loops 4, 5. The strips 10 may also be short-circuited opposite the gap 3 to reduce eddy currents. High frequency energy is fed to the strips 2 from a coaxial line terminating in a disc 12<SP>1</SP> which is pressed by a spring into contact with one of the strips 2. A probe 28 connected to a coaxial line may be used to measure the excitation of the :esonator. Specifications 622,148 and 703,995 are referred to.
Patent GB-536857-A (GB)
Title: Improvements in and relating to refractories and refractory moulds for casting metallic articles
IPC: A61K6/027
Filed: 1940-03-27
Abstract: 536,857. Denture and like moulds. TITANIUM ALLOY MANUFACTURING CO. March 27, 1940, No. 5541. Convention date, March 31, 1939. [Class 22] Refractory moulds for casting metal articles such as dentures contain a material which will expand at high temperature as the result of oxidation such as carbon or nitrogen containing compounds of zirconium, titanium, thorium, cerium, hafnium and silicon. Examples of compounds are the carbide, nitride, oxycarbide or cyanonitride of zirconium, the carbide, nitride or cyanonitride of titanium, the carbide of silicon, thorium, cerium or hafnium or the nitride of thorium or hafnium. The amount of the expanding material added is regulated by the amount of expansion desired. A small amount of an oxidizing agent such as red lead or lead peroxide may be added. Impurities such as carbon, carbides of the alkali or alkaline earth metals and iron compounds should be removed by acid leaching. The refractory material used may be zircon, aluminium oxide. silica, quartz, rutile. fused zirconium dioxide, mullite, sillimanite, olivine, forsterite, chromite, refractory clay, kaolin, beryl, spinel, kyanite, thorium oxide, thorite, ceria, feldspar, andalusite, talc, baddeleyite, or porcelain and a bonding agent such as magnesium zirconate, phosphoric acid or water may be used.
Patent GB-866288-A (GB)
Title: Improvements in water-mixing devices for shower baths
IPC: E03C1/08
Filed: 1958-02-20
Abstract: 866,288. Valves; nozzles. FREMION, M. Feb. 20, 1958 [Feb. 20, 1957; Oct. 18, 1957], No. 5612/58. Classes 69 (3) and 135. [Also in Group XXVIII] A mixing device, Fig. 1, for mixing hot and cold water in shower baths, comprises a body 1 adapted to be grasped by an operator's hand, a mixing-head 4 having a stationary guiding tube in which two diametrally-opposed axiallyseparated inlet ports 24, 25 are formed and in which a spring-closed tubular valve member provided with two co-operating admissionports 32, 33 with a smaller axial spacing than the inlet ports, slides under the control of the operator's hand by means of a lever 6, and a spraying head 5 having a nozzle 44 in which operates a jet-controlling member 42 attached -to and movable with the valve member. The feed-pipes 12, 13 for the inlet ports are connected directly to the inlet ports in the guiding tube. In a modification, Fig. 2, not shown, one supply is to the hollow head and the guide tube is lined with a yieldable sleeve and at the outlet end of the valve member a lift valve like seal is provided, the flow path being formed by ports in the wall of the valve member. Inspection plugs 46, 47 may be provided in the mixing-head. A rest, Fig. 6, for when the mixing device is not in use is attached to one end of a pivoted arm 112 arranged so that the weight of the mixing device causes a pair of lift valves 129 to seal off the outlets 106, 107 to the feed pipes from the inlets 104, 105, the inlet pressure also serving to maintain the valves closed. The valves are opened by operating the arm 112 manually and in addition they may be provided with dash-pots 128 to prevent water-hammer. The other end of the pivoted arm may be guided in a guide provided with detents for a spring-loaded ball in the end of the arm so that the valves are firmly located in the open and closed positions.
Patent GB-172890-A (GB)
Title: Improvements relating to vacuum fuel feed devices
IPC: F02M37/02
Filed: 1921-02-18
Abstract: 172,890. Jay, W. Feb. 18, 1921. Vacuum apparatus.-In vacuum fuel-feed apparatus comprising a vacuum chamber A provided with suction, air, and fuel'connections 8, 9, 10 and a reserve chamber B separated from the vacuum chamber by a valved partition 2, the chamber A is surrounded by a sleeve 4 forming a jacket 4<a> communicating with the chamber B by ports 3 arranged below the partition 2. The jacket is closed at the top by an angle-piece 5<a> to which the cover 6 is attached. The jacket is connected to the atmosphere by channels 5b, 6a. The vacuum and reserve chambers are preferably formed in one piece with an integral bottom.
Patent GB-1423971-A (GB)
Title: Electronic watch
IPC: G04G21/00
Filed: 1974-02-07
Abstract: 1423971 Electronic watches HUGHES AIRCRAFT CO 7 Feb 1974 [21 March 1973] 05686/74 Heading G3T In an electronic watch having a display device 72, e.g. of liquid crystal or l.e.d. type, coupled to a circuit comprising an integrated circuit chip 74 mounted on an insulating substrate 56, a cover 80 is fixed over part of the front face of the substrate to provide an hermetically sealed enclosure around the display device and the circuit chip, the cover being optically opaque both having a window 88 over the display device. The window 88, watch crystal 16, or a further window (50), Fig. 2 (not shown) in dial plate 48, is coloured to pass only those wavelengths of light appropriate to the display device. The substrate 56 is smaller than the inner diameter of a flange (52) on the dial plate and its front surface is engaged by a resilient ring 54. The watch is powered by cells 108, 110 located in apertures 104,106 in a rigid spacer block 100. Four J-shaped springs e.g. 132, 134 project rearwardly from the substrate and locate the latter radially by pressing on the spacer block as well as making connections to the cells and/or being available for contact by push-buttons 144 (and 152, 154) Fig. 1 (not shown). Push-button (154) is for setting and is recessed in the case 12 to prevent inadvertent operation. Buttons 144, (152) actuate the display to show the date, and the time in hours and minutes, respectively. If these two buttons are depressed together, the time in seconds is displayed.
Patent GB-511544-A (GB)
Title: Motor drive for cycles
IPC: B62M7/10
Filed: 1938-02-23
Abstract: 511,544. Engine-assisted cycles. MAYR, H. Feb. 23, 1938, No. 5690. [Classes 79 (ii) and 79 (iii)] An engine attachment for cycles is characterised by a driving pulley of variable diameter comprising a pair of adjustably spaced discs 16, 17, with radially grooved conical faces 18 in which are slidably mounted tread plates 19 encircled by a spring ring 20 and adapted to engage the front road wheel tyre 21. The discs, which are mounted on an axle 15 in an open bottomed casing 3, may be pressed together by springs 24, 25, so that the tread diameter varies according to the pressure exerted against the tyre 21, or they may be adjusted through levers or flexible cables. The complete unit comprises a single cylinder engine 1 with crank case 2, fuel tank 14 and pulley casing 3, pivoted to a bracket 5 attached to the fork head 6 and rockable to bring the pulley into or out of engagement with the wheel tyre by means of a control lever 10 on the handle bar acting through a tie-rod 9 rendered elastic by a coiled part 13, the control lever being held by a detent engaging a toothed quadrant 12. The discs 16, 17, may be driven through toothed rims 22, 23 by pinions on the crank shaft or by belt or chain gearing. If desired, only the part carrying the driving pulley, instead of the complete unit, may be rockable to effect engagement with the wheel tyre.
Patent GB-539474-A (GB)
Title: Improvements in or relating to the bonding of refractory material
IPC: C04B33/02
Filed: 1940-03-30
Abstract: 539,474. Catalytic agents. BENNETT, O. G., and BERGER, L. B. March 30, 1940, No. 5745. Convention date, April 18, 1939. [Class 1 (i)] [Also in Group V] Refractory materials are bonded by mixing with a minor proportion of a bonding clay such as bentonite, heating the mixture to effect partial bonding, impregnating the mass with a chromate and again heating. The refractory material may be a metallic chromite catalyst such as is used to remove objectionable constituents from internal combustion engine exhaust gases. Thus copper chromite is mixed with bentonite along with a refractory support such as chromic oxide and combustible material such as carbon which is afterwards removed in the heating. The mass is moulded, heated, impregnated with a solution of copper chromate and again heated till a hard mass is obtained.