baber/WOPTO huggingface dataset:
Patent GB-875418-A (GB)
Title: Improvements relating to optical systems
IPC: G02B23/06
Filed: 1960-05-17
Abstract: 875,418. Capoptric systems. PERKINELMER CORPORATION. May 17, 1960 [May 29, 1959], No. 17395/60. Class 97(1) The system comprises a concave paraboloidal reflector 10 focusing radiation energy (e.g ultra-violet, visible or infra-red radiation) on to a plane mirror 12 which directs the radiation to a collimating concave paraboloidal reflector 14. The collimated energy is directed by a convex spherical mirror 16, to a concave spherical mirror 18, which brings the radiation to a final focus. Mirrors 16 and 18 are positioned concentrically and have their radii substantially in the ratio #5-1/#5+1. The curvature introduced by mirrors 10-14 may be balanced by the opposite curvature due to mirrors 16, 18. Optical data are given for one example of the embodiment shown.
Patent GB-1130957-A (GB)
Title: Improvements in or relating to circuit arrangements for correcting pin-cushion distortion in display tubes
IPC: H04N3/237
Filed: 1966-04-21
Abstract: 1,130,957. Cathode-ray tube circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 21 April. 1966 [24 April, 1965], No. 17491/66. Heading H4T. The invention relates to a known arrangement for correcting pin-cushion distortion in the scanning of a cathode-ray tube utilizing a saturable reactor having oppositely wound windings 21, 22 (Figs. 1 and 2), connected in shunt with the line deflection coils 13 and a control winding 26 connected effectively, in shunt with the frame deflection coils 17. In accordance with the present invention the winding 26 is tuned by a capacitor C 2  such that when the magnetic flux density in the outer limbs is low, i.e. near the centre of each line trace when the portion (i 1 ) of the line deflection current (I h ) in 21, 22 is small-the voltage U 2  across C 2  increases approximately sinusoidally between time (t o ), (Fig. 4)-corresponding to the centre of the line trace-and a transition instant (t 1 ), which varies between 50 degrees and 70 degrees of the sine curve depending on the magnitude of the frame deflection current Iv, and after (t 1 ), decreases according to an approximate cosine waveform 28 determined by an oscillatory circuit which includes the windings 21, 22 now coupled to 26 since one of the outer limbs is now saturated by the horizontal deflection current corresponding to the extremity of a line. After the fly-back period (t 2 -t 6 ) due to the symmetry of the arrangement the waveform of the voltage U 2  across C 2  has an identical shape of opposite polarity-eg. between (t 6  - t 7  - t o ) the transition instant (t 7 ) in this case also being dependent on the magnitude of the frame deflection current (Iv). As the latter increases-in both the positive and negative direction, representing a vertical movement of the beam upwardly and downwardly from the centre, the transition instants (t 7 ), (t 1 ) approach the instant (t o ) due to one or other of the outer limbs becoming saturated so that the winding 21 or 22 on such limb is effectively connected in series with C 2  via the transformer action between the other winding and winding 26. Thus, during the intervals (t 6 -t 7 ) and (t 1 -t 2 ), which vary with Iv, one of the windings 21, 22 is effective to shunt a portion (i 1 ) of the vertical deflection current I h -the impedance of C 2  being low for line frequency-to provide the necessary correction as a function of frame frequency whilst the voltage U 2  across C 2  which is integrated by the frame deflection coils 17 provides the necessary parabolic correction of the frame deflection. The theory of operation is discussed.
Patent GB-329532-A (GB)
Title: Improvements in safety razor blades
IPC: B26B21/56
Filed: 1929-04-10
Abstract: 329,532. Caen, H. April 10, 1929. Divided on 329,461. Razors, safety. To facilitate the removal from its holder of a safety razor blade of the slotted type, a projection or hole is provided at the end of the blade remote from the open end of the slot. The projection may take the form of a pin or rivet a, or the edge of the blade may be upturned as at c, or the surface of the blade may be raised by any suitable means to provide a projection.
Patent GB-248993-A (GB)
Title: An improved coring and reaming tool for rotary well drilling
IPC: E21B10/62
Filed: 1925-07-08
Abstract: 248,993. Cuthill, J., and Oil Well Engineering Co., Ltd. July 8, 1925. Borehole apparatus.-In a well-boring tool in which a reaming cutter is connected to a projecting core - cutter and to the drill tube, flushing water pressing between the latter and an inner core tube, the core-cutter is screwed to the reaming cutter and the core tube is connected either to the core-cutter or to the reaming cutter. In Fig. 1, an outer tube d is fixed to the reaming head g. and the core tube j to a coring cutter i which is threaded to and in advance of the reaming head, the advance being varied by placing washers behind the coring cutter. The coring cutter has internal transverse serrations u in which sand &c. accumulates to hold the core. The reaming head has passages s for the flow of flushing water &c. and has double wedge-shaped notches receiving similarly shaped reaming cutters h which are locked by the coring cutter. One or more ball valves l, m protect the core from the flushing water. The teeth of the coring cutter may be set alternately inwardly and outwardly. In Fig. 8, the core tube j is threaded to the reaming head.
Patent GB-746028-A (GB)
Title: Improvements in the treatment of metal at low temperatures
IPC: C21D6/04
Filed: 1952-07-11
Abstract: 746,028. Treatment of metals. GES. FUR LINDE'S EISMASCHINEN AKT.-GES. July 11, 1952 [July 13, 1951], No. 17596/52. Class 72. A process of treating metals at low temperatures, i.e. temperatures obtained in industrial refrigerators down to-200‹ C., comprises subjecting the metal to a flowing medium (liquid, vapour or gas), the physical condition and pressure of the medium, the temperature difference between the medium and the metal, and the rate of flow of the medium being regulated to produce the required change in properties in the metal. As shown, the metal may be supported on a grid 12 immersed in a liquid 10 in a tank 9. Air is compressed in a compressor 1, cooled in a water cooler 3, further cooled in a heat exchanger 4 and passed into an expansion engine 5 which may drive an electric generator. The cold air then flows through a pipe 7 into a distributer 8 and is bubbled through the liquid 10. The cold liquid circulates in the direction of the arrows and the exhaust air passes through the heat exchanger 4 to the compressor. The compressed air may be expanded by a throttle valve, or may be passed into a Raugne vortex tube. Liquids may be evaporated from a metal thereby cooling it and the vapour condensed on other metal to heat it. A description is also given of a method of treating metal at higher and lower temperatures, Fig. 5 (not shown).
Patent GB-795539-A (GB)
Title: Igniting means for gas-cooker burners
Inventor: SHUTTLEWORTH DEREK
IPC: F24C3/10
Filed: 1955-06-20
Abstract: 795,539. Igniting burners. RADIATION, Ltd. June 18, 1956 [June 20, 1955], No. 17724/55. Class 75(3): Means for igniting the burners of a gas cooker comprises in combination with a burner a two jet orifices m, n situated in the same vertical plane and below the main jets of the burner, a flame tube i extending from the lower jet orifice n to a chamber h, Fig. 4, containing a pilot burner e, and a baffle q extending upwardly from an aperture in the upper side of the gas entrance end of the flame tube i to a position opposite the upper jet orifice m and having flanges on its vertical edges. In operation flashback in the flame tube i ignites the lower jet n and pocket of gas formed by the baffle q, and the resulting flame ignites the upper jet m and the main burner jets. The lower jet orifice n is formed in a nipple which is connected to the flame tube by a coupling sleeve p. The baffle q is formed on the sleeve p. The chamber h for the pilot burner has holes in its base for the entrance of air and its upper end has a cover j having a lateral extension having an igniting aperture k. The pilot burner may be common to all the main burners of the cooker.
Patent GB-134324-A (GB)
Title: Improvements relating to Piano Player Music, and Machines for Producing same.
Inventor: REYNOLDS REGINALD
Filed: 1918-10-31
Abstract: 134,324. Reynolds, R. Oct. 31, 1918. Strip-controlled pneumatic driving-mechanism. -Expression marks are automatically printed on a tune-sheet b in definite relation to marginal perforations t. The sheet advances step by step by the distance between two perforations, in synchronism with a master-sheet a having similar perforations s. The sheet a is also provided with several sets of perforations 35, each controlling a particular type of marking. When one of these registers with an aperture in the trackerbar 29, air is admitted by a pipe 28 to beneath a cushion 24, raising a valve 25, and thus connecting a cushion 26 to a pipe 22; this pipe is momentarily connected to the exhaust every time the two sheets are stationary, thus causing the cushion 26 to fall and operate the printing-device 27. The master-sheet a and tune-sheet bare driven by motors f, g respectively connected by pipes h, 34 with separate parts of a valve-chest 2 and thence by valves i, l and pipes 3, 4 respectively with a chamber 1 connected by a pipe 33 with the exhaust pump 31. When one of the perforations s registers with an aperture in the tracker-bar 29, air passes by a pipe q to a cushion m carrying the valve i, thus raising and closing the valve and thereby stopping the motor f. Similarly, the motor g is stopped whenever a perforation t registers with an aperture in the tracker-bar of the sheet b. When both motors are stopped the increased suction in the system causes a bellows-plate 8 on the chamber 1 to rise against the action of a spring 9; a spring catch 10 on the plate 8 momentarily raises a plate 11, admitting air to a pipe 12, which operates valves 14, 20 so as to connect the pipe 22 to an exhaustpipe 21. When the plate 8 has risen further,. a stop 7 raises a plate 6, admitting air to pipes y, z, causing valves u, v to rise, thus cutting off the cushions n, o from the atmosphere and connecting them to an exhaust pipe x; the valves j, k then fall, connecting pipes h, 34 to the exhaust and thus re-starting the motors. The valves i, l open and the valves j, k close as soon as the apertures in the two tracker bars are covered. The pipe 33 may be closed to stop both motors by a valve operated by a rod 37. The sheets a, b may be driven by electrical means controlled by the perforations s, t, instead of pneumatically.
Patent GB-601132-A (GB)
Title: Improvements in and relating to automatic pilots for aircraft
IPC: G01C19/00
Filed: 1945-07-12
Abstract: 601,132. Retarding valve actuation. DUNN, R. W., BROWN, G. W., ROWSE, L. E., SPENCER, W. A., SUDWORTH, J., HOPKIN, H. R., and MEYER, J. F. A. July 12, 1945, No. 17878. [Class 135] [Also in Groups XX and XXXV] Opening of a valve 25 controlling the precession of a gyroscope (see Group XX) takes place when the turn control knob 11 of an automatic pilot is moved but is delayed by the liquid dash-pot 16. The valve actuating rod 24 is connected to the piston 19 and the latter is urged downwards by the spring 18 when the plunger 14 is depressed by the cam surface 13 fixed to the knob 11. The piston 19 is provided with one-way flaps 22 so that the valve 25 is closed, immediately the knob 11 returns to the zero position, by the engagement of the flange 20 with the piston. Specifications 600,901 and 601,131 are referred to.
Patent GB-804373-A (GB)
Title: Improvements in or relating to dust collecting apparatus
Inventor: ULANDER PER HELGE NATANIEL
IPC: B03C3/80
Filed: 1955-06-21
Abstract: The tubular members of a multicyclone separator are cleaned by jets of compressed air.  The air is preheated so as to impinge on the members at a temperature above the dew point.
Patent GB-721242-A (GB)
Title: Improvements in or relating to oil burning means or apparatus
IPC: F23D11/04
Filed: 1952-07-16
Abstract: 721,242. Liquid-fuelburners. WILLIAM, R. Oct. 16, 1953 [July 16, 1952], No. 17926/52. Classes 75 (1) and 75 (3). In a rotary fuel oil burner in which an element or spinner is rotated by an air-actuated impeller or impellers located in an air tube or casing,. the arrangement is such that the impeller or impellers, and hence the rotary element, are driven by the natural air draught created by combustion. An inverted conical spinner or cup 38 provided with a re-entrant lip 38b is attached to the end of a freely rotatable shaft 37 mounted in bearings 35, 36 and rotated by air drawn through a bellshaped tube 28 acting on a multi-bladed impeller 44 attached to the shaft 37. The air tube 28 is attached by lugs 28a to a bridge piece 26 slidably mounted on spindles 17 secured at their upper ends to a ring 15. The bridge piece 26 is adjusted in height by a screw 61. The cup 38 is covered by a plate 40 attached to the end of the shaft 37 and is located within a tube 30 centrally supported with respect to a firepot by means of a flange 30a mounted on legs 29 supported on lugs 28b on the tube 28. The flange 30a is covered by a ring 31 provided with a lip 31a and spaced therefrom by projections 30b. The ring 15 is concentrically arranged within a pan 11 by a ring 18 mounted in a recess 15a and engaging the open end of the pan 11 to form an airtight joint. The firepot, comprising an outer cast-iron member 20 having a cylindrical flange 20a on which is located an inner firepot 22 spaced from the member 20 by studs 21, is supported on the ring 15 by legs 19. Height adjustment of the firepot is effected by using legs 19 of different lengths. Fuel oil is supplied to the cup 38 by a pipe 46 and, in the event of the flame being extinguished, the fuel flows over the edge of the lip 38b into the lower part of the burner casing 16 to raise a float 57 which, through a lever 55 and rod 54, moves a trip lever 51 from beneath a weight or spring 50b which drops to close a fuel valve 50. The oil fuel supply to the cup 38 may be controlled by a hand-operated metering valve, by boiler steam pressure operating a piston or diaphragm valve, or by thermostatically controlled means. The burner casing 16 is emptied through a valve 59. Secondary air passes to the combustion zone through apertures 16a in the casing 16 and then around the outside of the tube 28 and firepot member 20. The burner is started by igniting an oil-saturated annular wick 47. Vertical adjustment of the burner assembly relative to the pan 11 is effected by screws 60. Neck rings or baffles 62, 63 are provided to.affect the air flow through the burner and thus the flame shape. In a modification, showo in Fig. 3, an additional tube 64 may be mounted within the tube 28 by means of vanes 65 which straighten the path of the air flowing around the outside of the tube 64. The burner may be arranged for vertical, horizontal or inclined operation.
Patent GB-718996-A (GB)
Title: Improvements in or relating to tripod stands
IPC: F16M11/34
Filed: 1952-07-17
Abstract: 718,996. Supports for signs. MARTINDALE ELECTRIC CO., Ltd., and STANLEY, R. F. Aug. 17, 1953 [July 17, 1952], No. 18061/52. Class 3(2) [Also in Group XIV] A tripod stand comprises a supporting member having a guide part, of Y crosssection, sliding vertically through a tubular head, of triangular cross-section, to which three legs are pivoted about horizontal axes, means for limiting the downward movement of the guide, and three links each pivoted at one end to a leg and at the other end to the lower end of the guide, the ends of the arms and stem of the Y lying adjacent the junctions of the sides of the head. The guide B and head A are each formed by three bent metal plates welded or riveted together, a platform B<SP>1</SP> on the guide limiting the downward movement of the guide to spread the legs C, when links E have passed beyond their dead centre position and having a raised edge to retain a lamp and holes B<SP>3</SP> to receive flag posts. One of the legs C has spaced slots to receive spring catches on the back of a sign.
Patent GB-883617-A (GB)
Title: Improvements in or relating to universal joints
Inventor: FREEMAN LESLIE GAILLARD
IPC: F16D3/205
Filed: 1959-05-28
Abstract: 883,617. Universal joints. BIRFIELD ENGINEERING Ltd. May 16, 1960 [May 28, 1959], No. 18141/59. Class 80 (2). In a universal joint of the kind wherein transverse trunnions 9 fast with one shaft 6 are axially slidable in grooves 5 in a housing 1, fast to the other shaft, part-spherical washers 10 are carried by the trunnions 9 and engage a central bore 4 in the housing to prevent radial play. A flexible cover 18 retains lubricant.
Patent GB-298550-A (GB)
Title: Manufacture of sulphamic acids of aromatic secondary bases
Filed: 1927-07-08
Abstract: 298,550. Imray, O. Y., (I. G. Farbenindustrie Akt.,Ges.). July 8, 1927. Aromatic secondary bases and sulphamic acids thereof; carbazol; anthracene.-Sulphamic acids of aromatic secondary bases (including carbazol) are, prepared by treating the latter, or mixtures containing them, with a chlorsulphonic ester, sulphur trioxide or pyrosulphuric acid, in the presence of an acid binding agent. Chlorsul. phonic acid or a salt thereof may also be used where the base is a diarylamine. A solvent or diluent, which may function as the acid binding agent, may be present. The process may be used for purifying aromatic secondary bases, the sulphamic acids, after separation and possibly purification, being decomposed to give the pure base by means of acid. According to examples :- (1) monomethylaniline is treated with oleum in the presence of synthetic collidine, and the sodium sulphamate is produced by adding sodium carbonate ; (2) the sodium sulphanamates of carbazol and diphenylamine are similarly prepared by treating the respective bases with chlorsulphonic acid in the presence of pyridine; (3) pure carbazol is prepared from crude anthracene, or the residue obtained on purifying the latter, by treating with chlorsulphonic acid, sodium chlorsulphonate, sulphur trioxide or a chlorsulphonic ester in the presence of chlorbenzene and dimethylaniline, adding sodium carbonate or lime, and filtering off the anthracene &c. after steamdistilling the chlorbenzene and dimethylaniline; the pure free carbazol is obtained on adding mineral acid to the filtered solution of the sodium carbazol sulphamate; (4) monomethylamine is separated from dimethylaniline by adding a mixture of sulphur trioxide and dimethylaniline, and decomposing the sodium sulphamate produced by adding sodium carbonate after steam distilling the dimethylaniline.
Patent GB-737043-A (GB)
Title: Improvements in or relating to arc-melting furnaces
Inventor: ATTKINS ROY
IPC: H05B7/02
Filed: 1953-07-01
Abstract: 737,043. Electric arc furnaces. IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 30, 1954 [July 1, 1953], No. 18231/53. Class 39 (3). In a furnace for melting metals of high M.P. in which arcs are passed from one or more electrodes to the surface of the metal in a watercooled metal crucible, the non-consumable electrode 2 is raised at intervals as fresh metal is added to the crucible, and a scraping device comprising a steel knife-edged ring 9 is clamped by a ring 10 to the lower side of a gas seal 4 through which the electrode passes, in order to remove metal deposits from the surface of the electrode. The gas seal comprises neoprene gaskets 4 and preserves an inert gas or vacuum in the furnace. The electrode is of copper plated with chromium. Metals or alloys to be melted are titanium, zirconium, molybdenum, thorium, hafnium, tantalum or chromium and are added as a sponge or powder.
Patent GB-1463636-A (GB)
Title: One-way flow-sensing valve
IPC: F15B20/00
Filed: 1975-05-01
Abstract: 1463636 Valves DEERE & CO 1 May 1975 [1 May 1974] 18275/75 Heading F2V A non-return flow-sensing valve for use in a vehicle power steering system comprises an electrically conductive metallic seat 86 insulated from the valve body and an electrically conductive valve element 76 which completes an electric circuit when the valve element is in contact with the seat. The valve also includes a second non-return valve element 98. The two valves have separate inlets 70, 72 but use a common outlet 74.
Patent GB-1084567-A (GB)
Title: Automatic belt or chain tightening mechanism for an infinitely variable cone pulley transmission
IPC: F16H7/08
Filed: 1965-04-30
Abstract: 1,084,567. Expanding pulley gear. W. REIMERS. April 30, 1965 [May 6, 1964], No. 18344/65. Addition to 984,045. Heading F2D. In an expanding pulley belt or chain gearing, as described in Specification 984,045, having both pairs of conical flanges (not shown) arranged to move relatively axially in opposite directions for a ratio change by turning a spindle (not shown) to pivot levers on tension blocks 1 slidably mounted, or one slidably mounted and one threaded (Fig. 5, not shown), on a spindle 2, in which one or each tension block 1 is inwardly biased by springs 22 to tighten the belt or chain and is or are engaged at their outer faces by clamping nuts 24 screwed on opposite pitch threads on the spindle 2, the spindle being rotatable and subjected to a continuously applied torque at 20 tending to tighten the clamping nuts to decrease the distance therebetween to maintain engagement and support of the blocks 1 as they are moved inwardly towards each other under the action of the springs 22, the inward movement of the nut 24 is controlled relative the tension block 1 by a ratchet wheel 50 (Fig. 4, not shown), splined to the spindle 2, which during automatic adjustment is moved inwardly by the nut until it engages a stop 51, fast with the block 1, providing a lock to limit the extent of tightening of the nut. The arrangement thus allows the torque applied at 20 to the spindle 2 to be greatly increased to effectively overcome all frictional resistances without excessive tightening occurring during adjustment. In Fig. 5 (not shown) friction losses are further reduced by a ball thrust bearing (60) arranged between the spring (22), seated on a collar (61) and the tension block (1), the threaded adjustment (9) thus being free of the spring load (22).
Patent GB-141985-A (GB)
Title: Apparatus for the purpose of providing public amusement and exercise
IPC: A63B22/08
Filed: 1919-07-24
Abstract: 141,985. Clegg, H. July 24, 1919. Race games, mechanical. -Relates to apparatus of the kind in which stationary bicycles or home-trainers 5, 9, 12, Fig. 2, are geared to model figures so as to move them at a speed proportional to the speed at which the bicycles 5, 9, 12 are pedalled by the competing riders. According to the invention each bicycle is connected by belts &c., 49, 50, 53 to a long screw 37-48. Fig. 6 shows one of the model figures 51 and the actuating mechanism. The figure is mounted on a half-nut 67, which travels along the screw 41 as the latter is rotated by the corresponding bicycle. When the figures reaches the end of the screw, it trips a lever 80, which causes an electric bell to ring and the number 75 to appear. The bicycles are fitted with friction brakes which retard them all equally. An attendant can operate another brake to stop all the bicycles. According to the Provisional Specification, a clock may be provided for timing the race.