baber/WOPTO huggingface dataset:
Patent GB-771179-A (GB)
Title: A process for removing mercaptans from hydrocarbon oils
IPC: C10G27/04
Filed: 1955-08-11
Abstract: Mercaptans are removed from hydrocarbon oils by treating the oils with an aqueous solution containing 2-25 gms/litre of dissolved alkali metal hydroxide and 2-5 gms./litre of lead monoxide dissolved in the form of alkali metal plumbite, in which 5-15 gms./litre of lead monosulphide are suspended.  This suspension may be prepared by using a solution, containing 7-20 gms. of lead monoxide dissolved in the form of alkali metal plumbite and 2-25 gms. of alkali metal hydroxide, for removing mercaptans from a hydrocarbon oil, thereby forming a suspension of lead sulphide in the solution.  The alkali metal hydroxide may be sodium hydroxide.  Oxygen, e.g. a free oxygen-containing gas such as air, may be dissolved in the oil before treatment or injected into the mixture of oil and the suspension. Sulphur, as such, or as a solution e.g. in hydrocarbon oil, may also be added during the treatment or to the oil after separation of the suspension. The oil and the suspension may be mixed in a mixing apparatus e.g. a turbo-mixer.  The suspension may be reused many times and may finally be regenerated by heating to 50-80 DEG C. Straight run gasoline, reformed gasoline and kerosine may be treated. U.S.A. Specifications 1,754,649, 1,789,335 and 2,049,423 are referred to.
Patent GB-372644-A (GB)
Title: Improvements in or relating to double-acting two-stroke internal combustion engines
IPC: F02B3/06
Filed: 1931-08-19
Abstract: 372,644. Two-stroke engines. SULZER FR’RES SOC. ANON., Winterthur, Switzerland. Aug. 19, 1931, No. 23356. Convention date, Sept. 25, 1930. [Class 7(ii).] In a doubleacting two-stroke engine cylinder, compensation is made for the cooling and baffling effect of the piston-rod by reducing the amount of the charging or exhausting of the piston-rod end of the cylinder. Figs. 1 and 2 show curves in which the port opening per unit volume of combustion chamber F/V is plotted against time t curves 1, 2 being for inlet, and 3, 4 for exhaust ports of the two ends respectively of the cylinder. The areas between the curves and the axis represent the charging or exhausting and are arranged to produce the condition set out above, by making the ports, if piston-controlled, asymmetrical with reference to the piston travel, by difference in piston movement at the two dead centres, or by controlling the opening of ports by valves. The curve 5 represents a supplementary air charge supplied to the upper combustion chamber, which may be charged at a higher pressure than the other combustion chamber.
Patent GB-424574-A (GB)
Title: Improvements in road signalling devices for motor vehicles
IPC: B60Q1/36
Filed: 1933-08-23
Abstract: 424,574. Road - traffic signals on vehicles. MORRISS, J. F., 18, Alexandra Villas, Finsbury Park, London. Aug. 23, 1933, No. 23454. [Class 118 (ii)] Stencil plates are raised from a hidden to an exposed position by pneumatic action, the plates being guided by the cylinders of the actuating mechanism on one side and by suitable guides on the other. The operating cylinders for adjacent plates are mounted on opposite sides of the frame and a plate may be illuminated behind the stencils when in exposed position. As shown in the Figure, stencil plates d for displaying arrows and words such as " Stop " and " Pass " are guided by cylinders a and guides e, cylinders for adjacent plates being on opposite sides of the frame. When suction is applied to a cylinder from the engine induction pipe, through pipe k, the piston f is drawn up so that the relative outer cylinder b, which carries the plate d and is connected to the piston by rivets h passing through slots g in cylinder a, is drawn upwards, sliding the plate into the exposed position. When the plate is raised it makes contact with spring p completing a circuit for lamps illuminating the background plate l and for a tell tale lamp on the dash-board. When the connection to the induction pipe is broken the plates are restored by gravity which may be assisted by weak springs mounted in cylinders a.
Patent GB-1294788-A (GB)
Title: Nonthrombogenic polyethylene terephthalate material
IPC: D06M16/00
Filed: 1971-04-19
Abstract: 1294788 Vascular grafts CORNING GLASS WORKS 19 April 1971 [19 March 1970] 23493/71 Heading A5R [Also in Division Dl] Heparin is bonded to polyethylene terephthalate material used in prosthetic devices, e.g. vascular graft materials by impregnating the material with an aqueous dispersion comprising sodium heparin and a cationic surfactant, drying the material to remove water and then subjecting the material to dry heat. Specified surfactants are octadecylamine, N-(1-methyl heptyl) ethanolamine, N,N' - bis(1 - methyl heptyl) ethylenediamine, longchain alkyl quaternary ammonium salts, guanidines, hydrozines, amine oxides, N-alkyl pyridinium chlorides, phosphonium salts and sulphonium salts.
Patent GB-247860-A (GB)
Title: Device for holding or supporting neck-ties
IPC: A41D25/12
Filed: 1925-09-22
Abstract: 247,860. Collins, E. E. Sept. 22, 1925. Necktie retainers.-A holder or support for a necktie is provided with stud-engaging means 10, Figs. 1 and 2, at its lower end which prevents it moving downwards relatively to the stud 11, and with a forwardly projecting portion 12 above the stud-engaging means to engage beneath and form a seat for the knot of the tie. Fig. 3 shows a sectional elevation through an alternative form of support provided with wings 17 to fit between the wings of a collar, and with a bulged seat 12 for the knot of the tie.
Patent GB-646440-A (GB)
Title: Improvements in or relating to electron microscopes
IPC: H01J37/20
Filed: 1947-08-27
Abstract: 646,440. Electron microscopes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 27, 1947, No. 23675. Convention date, Aug. 30, 1946. [Class 39 (i)] A removable object-holder 7, Fig. 1, is mounted through the stopper 6 of a tube 2, which is closed at the other end 10 and is rotatably mounted in the wall 1 of the microscope so that the tube apertures 9 for the electron beam can be closed. In the form shown in Fig. 1, the beam apertures 9 in the tube can be sealed by a member 11 which is supported by the metal tube 1 and has beam apertures 12. The microscope may be continuously evacuated. In a further form, the amount of air which can leak subsequently into the microscope following the exchange of objects 25, Fig. 2, is minimized by using an object holder 18 which is a sliding fit in the rotatable tube 13. The beam apertures in the tube can be closed, upon rotation, by rubber rollers 27 mounted on spindles 29, which are pressed towards the tube by springs 31. To prevent wearing of the rollers when not sealing the apertures, the spindles sink into recesses in the tube so that the rollers move inwardly when the beam apertures are to be closed. Alternatively bosses on the tube 13 may lift the spindles. The end 17 of the object holder 18 passes through a stuffing box 16 and is secured within a knob 19. A slotted rim 22 forms with projections 20 a bayonet joint. The knob 19 houses a pin 23 on the tube 13 so that removal of the knob, together with the object holder, can be effected only after rotation of the knob and the tube to close the beam apertures. Adjustment of the object holder relative to the tube 13 is permitted by limited movement of the pin 23 in the knob 19. An indicating projection 36 may be provided on the knob.
Patent GB-600069-A (GB)
Title: Improvements in or relating to the construction of recesses to accommodate independent boilers and/or gas cookers in dwelling houses and the like
IPC: E04F19/00
Filed: 1944-11-29
Abstract: 600,069. Outlets to chimneys. SNELLING, J. C., and RICHARDSON, R. A. Nov. 29, 1944, No. 23860. [Class 126] [Also in Group X] RICHARDSON, R. A. Nov. A tiled recess for an independent boiler J and/or a gas cooker L comprises tilefaced concrete blocks C, D, a tiled hearth block A, and a lintel flue block T tiled at the front and having a mantel-piece W and openings Q communicating with flues P, R. The blocks C, D may also be provided with tiles on their outer faces and front edge and with a peripheral groove Y.
Patent GB-671989-A (GB)
Title: Apparatus for compressing or expanding the amplitude range of electrical signalling waves
IPC: H03G11/00
Filed: 1950-09-29
Abstract: 671,989. Impedance networks. WESTERN ELECTRIC CO., Inc. Sept. 29,1950 [Sept. 30, 1949], No. 23885/50. Class 40 (viii). Apparatus for compressing or expanding the amplitude range of electric signals comprises a hybrid network having at least two pairs of conjugate arms, the arms of one pair forming the input and output connections, and a non- linear impedance being provided in at least one of the other arms. Owing to the conjugate position of the input and output the only energy transmitted through the device is that reflected in the other arms and the effect of the non-linear impedance can be arranged to cause a compression or expansion in the amplitude of the reflection. In the arrangement shown, signals from a source 20 pass to a wave-guide hybrid junction 10 of the kind described in Specifications 643,162 or 643,163. The arm 18 forms the output of the apparatus. Non-linear impedances 24 and 25 are provided on the other arms of the junction. In order that the reflections may add in the output arm 18 and cancel in the input line 12 a phase changer 28 is inserted in one arm. This may consist of a quarter-wavelength section of wave-guide.
Patent GB-976150-A (GB)
Title: Improvements in or relating to pulsed radar systems
IPC: G01S13/528
Filed: 1961-07-03
Abstract: 976,150. Pulse radar. PHILIPS ELECTRONICS ASSOCIATED INDUSTRIES Ltd. July 3, 1961 [July 6, 1960], No. 23941/61. Heading H4D. In a moving target pulse radar system of the kind in which pairs of pulses having different carrier frequencies are transmitted, the pulses are produced by combining in mixing circuits MA, MB the output of a radio frequency (Fc) oscillator GC with the outputs of respective oscillators GA, GB producing lower frequencies Fa, Fb which are fed to the circuits MA, MB via gates PA, PB operated by a pulse generator pG operating at the PRF of the system. The pulses so produced, which have carrier frequencies Fc+Fa and Fc+Fb respectively, are then amplified in AA, AB and supplied to the transmitter TM which feeds the aerial TA via a duplexer D. Echo signals received from a target are separated by a filter RM into pulse trains having frequencies (Fc+Fa)<SP>1</SP> and (Fc+ Fb)<SP>1</SP> and then mixed with the frequency Fc in mixers DA, DB from which respective frequencies Fa<SP>1</SP> and Fb<SP>1</SP> are derived. The former frequency, viz. Fa<SP>1</SP>, is mixed in FA with the difference frequency Fa-Fb which is derived from oscillators GA, GB to produce a frequency Fb<SP>11</SP> which differs from the frequency Fb<SP>1</SP> by an amount depending on target speed. (For stationary targets these frequencies are identical and equal to Fb). Phase comparison of Fb<SP>1</SP> and Fb<SP>11</SP> in device PD then results (for moving targets only) in an output signal which is fed to a memory tube MT which supplies a voltage to an indicating device JD equal to the difference between the voltage supplied to the tube MT from two successive pulses. An advantage of the system according to the invention is that there is no oscillator operating continuously on a frequency to which any part of the receiver circuit responds and a high degree of cross-talk discrimination is therefore achieved without stringent shielding requirements.
Patent GB-711688-A (GB)
Title: A combined slub detector and stop motion device for yarn or thread winding
IPC: B65H54/02
Filed: 1952-09-24
Abstract: 711,688. Combined yarn clearer and slub detector and stop motion. SPENGLER, H. Sept. 24, 1952, No. 23942/52. Class 120(2) A combined yarn clearer and slub detector and stop motion device comprises a clearer of the kind in which yarn or thread passes through a slot in a blade or between a pair of relatively adjustable blades, pivotally mounted so as to be urged against a stop by adjustable resilient pressure means in order to hold the clearer resiliently in the path of the yarn, whereby when the clearer encounters a slub, the tension on the yarn or thread will move the clearer away from the stop against the action of the resilient pressure means to actuate stop motion mechanism. As shown the clearer 4 comprises an adjustable slotted blade 32 through which yarn 7 passes from a swift 5 to a winding-on bobbin 6, being guided by rollers 8 and guide eye 9. The clearer is mounted on a pivot 10 and has a heel 11 which coacts with a tooth 12a on a cam disc 12 mounted on a spindle 14. Also on the spindle 14 and angularly adjustable 'by virtue of a screw 17 and slot 18 with respect to cam disc 12 is a disc 15 to which is attached a hooked upper end of a drop rod 16 by means of a pin 19. The disc 15 is adjusted so that the drop rod 16 is situated just beyond its top dead-centre position. A coiled spring holds the clearer carrier block 35 against a fixed stop such that when the clearer encounters a slub it rotates about its pivot against the action of said spring and its heel 11 strikes the tooth 12a of cam disc 12 thus turning the disc 15 sufficiently to move the pin 19 over its dead-centre position, thus allowing the drop rod 16 to descend. The lower end of the rod 16 is attached to a lever 22 pivoted at 23 and loaded by a weight 24 hung from the lower end of a connecting rod 25 which hangs from a brake lever 26 arranged to actuate a brake 27 operating on the swift 5. Thus when the rod 16 drops the swift 5 is stopped and at the same time a forward extension of lever 22 lifts the bobbin 6, thus releasing the tension on the yarn and disengaging the reel 6 from its driving wheel 36.
Patent GB-984933-A (GB)
Title: Improvements in cam-operated electric switches
Inventor: STEINBECK GERHARD
IPC: H01H19/62
Filed: 1961-07-03
Abstract: 984,933. Securing cams on spindles. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. July 3, 1961, No. 23947/61. Heading F2U. [Also in Division H2] Cams 2 for actuating an electric switch are each removably assembled on a square-section shaft 1 by means of a radial slot 6 and a yoke spring 7. The spring 7 is compressed by a pair of pliers, inserted along the slot 6 and the ends 12, 13 allowed to spring into recesses 10, 11, whereupon they press against the shaft 1 as shown in Fig. 2 to produce a resilient clamping effect. Alternate cams in a series (Fig. 1) are assembled 180 degrees offset such that adjacent cams prevent lateral displacement of the spring 7, the end ones being retained by circlips 8 and 9.
Patent GB-743813-A (GB)
Title: Improvements in railway ballast tamping machines
IPC: E01B27/16
Filed: 1953-08-31
Abstract: 743,813. Railway ballast tamping machines. MATERIEL INDUSTRIEL SOC. ANON. Aug. 31, 1953 [Sept. 2, 1952], No. 23994/53. Class 104(2). A railway ballast tamping machine having at least one vertically movable frame 2 to which are pivoted picks 6 which are subjected to a vibratory movement and are moved towards and away from one another by means of oppositely threaded screws 9 arranged one on each side of a central member and engaging screwed members 8 has on each frame 2 a driving shaft 15 parallel to a shaft operating the central member which operating shaft can be driven forwardly or reversely, as desired to move the picks 6 towards or away .from one another, the operating shaft, in the latter case, is driven through a countershaft also parallel to the driving shaft 15, and has coupling means 14 mounted thereon. The shaft 15 drives, through bevel wheels, an eccentric 3 which imparts the vibratory movement to the picks 6 through links 4 and rotates the screws 9 through gears, bevel wheels 13, worms 12 mounted on inclined shafts and worm wheels 10 forming the central members. A shouldered ring 18 rotatably mounted on the vehicle body 1 and operated by a handle 17 can be moved to one of three positions to lock, free, or limit the vertical movement of the frame 2. In the position shown in Fig. 5 the shoulder 19 engages beneath lugs 20 provided on the frame 2 to hold the frame 2 up ; partial rotation of the plate 18 disengages the shoulders 19 from lugs 20 and the frame 2 is free to move, further partial rotation of the plate 18 moves the shoulder 19 into the path of a rod 21 mounted on the frame 2 to limit the upward movement of the frame 2. The rod 21 is adjustable in height. The frame 2 is suspended from a piston 30 slidable in a cylinder 31 mounted on the vehicle body 1. The frame 2 is raised by passing fluid through a pipe 32 to the cylinder space beneath the piston 30 and is driven downwards by passing fluid to the cylinder space above the piston 30 through a pipe 33. Specification 406,064 is referred to.
Patent GB-461988-A (GB)
Title: Method of uniting sprayed metal to wood
IPC: C23C4/02
Filed: 1935-08-28
Abstract: Wood is provided with parallel depressions, more or less regularly disposed, and metal is then sprayed thereon.  The depressions may be of rectangular, dovetail or regular wave form in cross section: in the latter case the sides thereof may be roughened.  Two layers of different metals or alloys may be applied.  The depressions may be straight, may form parallel waves or may be arranged zigzag, the depressions in any one group being parallel: they preferably extend in the direction of the wood fibres and are at right angles to the bending stresses or parallel to the tensile stresses.  The material may be employed in aircraft construction.  Specification 248,426, [Class 82 (ii)], is referred to.
Patent GB-840420-A (GB)
Title: Improvements in or relating to locks
Inventor: DANCER JAMES THOMAS
IPC: E05B25/00
Filed: 1957-07-30
Abstract: 840,420. Master-key locks. YALE & TOWNE MANUFACTURING CO. June 24, 1958 [July 30, 1957], No. 24040/57. Class 44. In a group of locks which are operated collectively by a master key and individually by a servant key, each lock has a casing 4 and a bolt 6 slidable within the casing. The bolt has a lath with parallel limbs 6a, 6b having notches 7a, 7b, respectively for engagement by the servant and master key. The lath has guide-slots 8 engaging fixed pins 9 within the casing, and a talon 13 on the casing passes through the limb 6a and engages gates 12 in security levers 11 pivoted at 10. The levers. 11 are engageable by levers 16 pivoted at 15, and the servant key may be inserted into the keyhole 14 with its shank in the upper circular portion 14a to actuate the levers 11 directly; alternatively the master key may enter the keyhole with its shank in the lower circular portion 14b to actuate the levers 11 through the levers 16. In use, the bit of the servant key positions the levers 11 to release the gates 12 from the talon 13, the bit then engaging the notch 7a to slide the bolt; the master key, which is rotated in an opposite direction to the servant key, engages the notch 7b also to slide the bolt.
Patent GB-1164344-A (GB)
Title: Overspeed Shutdown System for Centrifuge Apparatus.
IPC: B04B13/00
Filed: 1967-05-24
Abstract: 1,164,344. Control of centrifuges. BECKMAN INSTRUMENTS, Inc. 24 May, 1967 [29 July, 1966], No. 24042/67. Heading B2P. [Also in Divisions G1 and H2] A centrifuge having changeable rotors of different speed ratings is associated with an overspeed shutdown system in which a signal having a frequency proportional to rotor speed is compared with a standard frequency signal. A filter responds to a predetermined minimum difference frequency signal to provide a shutdown trigger signal. The rotor is fitted with a disc having alternate reflective and non- reflective sectors co-operating with a light source and a photo-transistor 17 connected to a limiter amplifier 18, comprising a breakdown diode D1, for producing a periodic waveform related to the speed of the rotor. Limiter 18 is coupled to an overspeed demodulator 19 comprising transistor Q1 which also receives a standard frequency signal from an oscillator, comprising transistors Q3, Q4, connected to quartz crystal 22 and to a frequency divider including transistors Q5, Q6. A low pass filter 23 responds to a predetermined minimum difference frequence from the demodulator 19 to'actuate a silicon controlled rectifier 24 for shutting down the centrifuge. An auxiliary acceleration circuit (not shown) produces initial rotation of the centrifuge, a signal from amplifier 18 energising a demodulator 20, comprising transistor Q2, so that relay 29 closes the circuit of the driving motor provided that the circuit components are functioning properly. As the rotor approaches full speed, the difference frequence has a high value and the filter 23 has no output. If the speed becomes excessive, however, the filter senses a low difference frequency to actuate the rectifier 24, so earthing the collector of transistor 33 and shutting down the drive system.
Patent GB-185741-A (GB)
Title: Improvements in and relating to steam engines
IPC: F01L31/16
Filed: 1922-09-06
Abstract: 185,741. Sch÷nfeldt, H. Sept. 7, 1921, [Convention date]. Beat or lift valves.-A steam-engine valvechest for attachment to the cylinders of locomotives is symmetrically arranged about two perpendicular planes, and contains separate double. beat admission and exhaust valves 8, 9 operated bv cams 11 on a central shaft 10 and housed in inlet and exhaust chambers 6, 7 on either side oi a central partition 5. The cam-shaft chamber is provided with a valve-controlled, normally open drain 15 and an auxiliary steam-supply connection 16. During idle running, steam supplied by the connection 16 closes the drain 15 and the pressure set up within the shaftchamber raises the valves 8, 9 from their seats, closes the exhaust outlet and puts the cylinder ends into communication. The valve-chest is held down by screw bolts 21, and has flanged feet 19 which engage flanged projections 2 on the cylinder, or a hollow spacing member 20. The chests are inclined to facilitate drainage. The valve-chests can be adapted for compound engines by providing additional intermediate valves.
Patent GB-981404-A (GB)
Title: Production of hydration-resistant dolomite sinter and bricks
IPC: C04B35/03
Filed: 1961-07-04
Abstract: Hydration-resistant dolomite sinter and bricks are prepared from raw dolomite by initially heating at below 1100 DEG  C. to yield a porous product which is impregnated with a solution or dispersion of silica, alumina, or zirconium silicate, applied by spraying or dipping, and then heating at above 1100 DEG  C. to produce dolomite sinter; said sinter is converted to brick by treatment with silica, alumina, or zirconium silicate in an organic media, pressing and firing. According to examples: (1) dolomite (5-35 mm.) was burnt at 800 DEG C. and dip impregnated with aqueous silica suspension and fired at 1700 DEG  C. to form a sinter containing 1.5% of silica; (2) sinter as prepared in (1) was impregnated with silica in mould-dressing oil, pressed and fired at 1550 DEG  C.; (3) sinter was produced as in (1) using alumina; (4) sinter was produced as in (3) and treated with alumina in mould-dressing oil, pressed and fired at 1550 DEG  C. The porosity of the bricks produced in Examples 2 and 4 is 17-20% vol.
Patent GB-883178-A (GB)
Title: Improvements to transformers, choke coils and all similar devices, as well as stampings used therefor
IPC: H01F27/245
Filed: 1958-07-28
Abstract: 883,178. Transformers and inductances. LEKENS, E. July 28, 1958 [June 26, 1958], No. 24159/58. Class 38 (2). A transformer or choke core is formed of stampings, the widths of which are reduced at 4 (Fig. 9) in the part surrounded by windings. The thickness of this part may be increased by soldering smaller stampings 5 to parts 4. In an alternative arrangement the core is built up of packs of stampings 14, 15, 16, 18 as shown in Fig. 11.