baber/WOPTO huggingface dataset:
Patent GB-232926-A (GB)
Title: Improvements in firing regulators for automatic fire-arms
IPC: F41A19/03
Filed: 1925-02-13
Abstract: 232,926. Soc. Anon. des Anciens Etablissements Hotchkiss et Cie. April 26, 1924, [Convention date]. Machine guns.-Mechanism for regulating the rate of firing of automatic guns comprises an oscillating spring-loaded flywheel actuated by the gas piston, or other reciprocating breech member, towards the end of the rearward movement thereof and adapted during its oscillating movement to retain the gas piston, or other breech member, in the rear position. As shown, the flywheel 1 is mounted on a shaft 11 and is provided with a coiled spring 5, Fig. 5. In the periphery of the flywheel is a notch 3 engaged, when the flywheel is in its initial position, by a roller 58 on the end of an auxiliary sear 54. The flywheel is rotated by a lever 15 engaging a projection 10 at the side of the flywheel and adapted to be struck, towards the end of the backward stroke of the piston P, by a shoulder p on the piston. When the flywheel turns, the roller 58 leaves the notch 3 and the auxiliarv sear is raised into bent with the gas piston P and is held raised until the flywheel, under the action of its spring, returns to its initial position. In order that the amplitude of the oscillation of the flywheel, and therefore the rate of firing, may be varied, the lever 15 is adjustably mounted so that the position of the point of impact may be varied. The lever mounting comprises a fixed stud 23 against which the cam-shaped front of the lever bears, and an eccentric bearing 14 carried by an adjustable disc 12, Fig. 1, turning about the shaft 11 and provided with a spring detent 17. When the disc is turned so that the detent engages a forward hole L, as shown in Figs. 1 and 3, the lever is fully advanced, to provide the greatest amplitude of vibration and the slowest rate of firing. When the disc is turned back so that the detent engages a rear hole R, the lever is moved to such a position that it is not struck by the piston and consequently the retarding mechanism does not operate and the firing is as rapid as possible. Intermediate rates are obtained bv intermediate adjustments. To provide for single-shot firing, the firing sear is provided with a spring catch 39 adapted, when a lug 49 on the safety bolt 48 is turned down so that the tail 25 of the catch is free, to prevent the return oscillation of the flywheel, by engaging the notch 3, until the trigger is released, thus maintaining the auxiliary sear 54 in engagement with the piston until the ordinary sear re-engages. The safety bolt 48 is adapted to engage a nose 24, Fig. 9, on the trigger and is operated by an external lever which can be adjusted to one of three positions corresponding respectively to continuous firing, single-shot firing and safety.
Patent GB-558036-A (GB)
Title: Improvements relating to the operation of electronic vacuum tubes or valves
IPC: H03C3/30
Filed: 1942-03-28
Abstract: 558,036. Frequency and reactance measurements. SARGROVE, J. A. March 28, 1942, No. 4136. [Class 37] [Also in Group XL] Variation in the frequency of oscillations, or in capacity or inductive reactance, are detected by a multi-grid tube having at least two control grids on opposite sides of an accelerating grid. Oscillations of an amplitude sufficient to cut off the anode current during part of the cycle, are applied to the outer control grid and cause a diversion of electrons to the inner control grid, which thus assumes an oscillatory voltage dependent in phase on the nature of the reactance in the inner control grid circuit. The anode current, being dependent on the phase difference of the voltages on the two control grids, thus affords an indication of deviations in the input frequency, or of changes in reactance in the inner control grid circuit. The Specification explains that owing to the transit time to the outer control grid being comparable with the half period of the oscillations, some electrons are returned through the accelerating grid with sufficient velocity to reach the inner control grid. As shown, a triode-hexode valve is used, the triode section being arranged to generate oscillations in a tuned circuit t1 which are applied to the outer control grid of the hexode section. The inner grid is connected to a tuned circuit v, u, the accelerator grids are positively biased through a resistance l, and the anode circuit includes an output load or instrument o and a loco-pass filter j. Changes in frequency of the circuit t1 or of the circuit u, v cause corresponding variation in the anode direct current. A pentode valve may be employed, and piezo-electric crystals may be associated with an oscillation generator connected to the outer grid and with a tuned circuit connected to the inner grid, and the frequency of either crystal may be varied by applying D.C. voltage thereto, Fig. 7 (not shown). The effect of changes in the supply voltage may be balanced out by duplicating the valve circuits and applying the signal input to one only, the output instrument being of a differential type. When two triode-hexode valves are used, one of them may be of the kind having the triode grid connected to the outer control grid of the hexode, and the other of the kind in which connection is made to the inner hexode grid. Radiant energy may be detected by connecting a photocell to the circuit u, v in such manner that its activity varies the phase relationship in that circuit. Specification 487,913, [Group XL], is referred to.
Patent GB-547343-A (GB)
Title: Improvements in or relating to means for removing clinker, ash and like material from gas producers
IPC: C10J3/34
Filed: 1941-03-28
Abstract: 547,343. Gas producers. FISHER & LUDLOW, Ltd., and ORWIN, O. J. B. March 28, 1941, No. 4201. [Class 51 (i)] Means for discharging clinker comprises a hollow shaft having an inclined part depending into a tank with a lower portion of a width slightly greater than the shaft and an upper portion of greater width so as to increase its capacity whereby variations in level are slight, the tank also having an inclined end up which the clinker is raked. The producer 10 has a depending, lined shaft 16 leading to an inclined shaft 19 discharging into a channel 21 of slightly greater width and having a discharge incline 23. The tank is T-shaped in section, its upper part 22 being of substantially the same width as the producer. An incline 24 is provided in line with the shaft 19.
Patent GB-641598-A (GB)
Title: Improvements in and relating to wood stains
IPC: B27K5/02
Filed: 1947-02-13
Abstract: A non-grain raising wood stain comprises a dye dissolved in an alcohol selected from the group consisting of 2-amino-2-methyl-1-propanol, furfuryl alcohol and tetrahydrofurfuryl alcohol, and a thinner.  The thinner is preferably composed of an alcohol and an aromatic hydrocarbon. Specified aromatic hydrocarbons are toluol, benzene, xylol and aromatic naphthas, specified alcohols are methanol, ethanol and methanol containing acetone.  A filler may also be present. Specified wood stains are (1) Resorcine Brown R, tetrahydrofurfuryl alcohol, methanol and toluol and (2) Black stain, 2-amino-2-methyl-1-propanol, benzene and ethyl alcohol.
Patent GB-725824-A (GB)
Title: Process of manufacturing multiple-ply boards containing disintegrated wood
IPC: B27N3/20
Filed: 1953-02-17
Abstract: Multiple-ply boards for heat and sound insulation &c. are made from fine shavings of a selected size range and a binder, spread to form one or both outer layers, the other or inner layer being formed of ground wood and a binder e.g. in a smaller proportion than that used with the shavings so that the core is porous.  The binder is hardened by heat and pressure whilst allowing steam to escape.  Pressure may be applied in two stages with wax spraying between.
Patent GB-644109-A (GB)
Title: Street lighting luminatires and refractors thereof
IPC: F21V5/00
Filed: 1948-02-16
Abstract: 644,109. Street lighting luminaires. H OLOPHANE, Ltd. (Holophane Co., Inc.). Feb. 16, 1948, No. 4481. [Classes 75(ii) and 75(iv)] A street lighting luminaire comprises a light source 20 ir a specular annular parabolic reflector 19 giving light beams at 70-75 degrees to the nadir and so producing a predetermined annular light spread R and a refracting bowl 25 having an annular side wall intercept ing the reflected light 21, said .wall having two generally opposite quadrants formed interiorly with uniformly refracting light elevating prisms 27 and superposed vertical laterally refracting prisms 26 of varying refracting power symmetrical about a media plane 1-1 through the elevating prisms 27, to elevate and concentrate the reflected light in said quadrants in the general direction of the median planes and illuminate more remote street areas R<SP>1</SP> in said twc directions. The refractor may include external light depressing prisms 30 arranged in the two opposite regions between the light elevating prisms 27, four zones 31 being left between the prisms 27, 30 wherein laterally refracting prisms only are formed. As shown the reflected light 21 has a vertical angle of 72 degrees which is elevated to 78 degrees and depressed to 66 degrees by the respective sets of prisms 27, 30. Where the luminaire is mounted at an intersection the light elevating prisms are arranged in four segments separated by laterally refracting prisms only. To avoid back refraction away from the median plane the risers 60, Fig. 12, of the laterally refracting prisms 26 are arranged in radial planes to ensure that all the direct and reflected light 64 falls on the active surfaces 61 of the prisms. Specification 217,539 is referred to.
Patent GB-1268141-A (GB)
Title: Zinc oxide maximum efficiency transverse wave crystals and devices
Inventor: MOORE ARTHUR RUSSELL
IPC: H03H9/02
Filed: 1969-01-27
Abstract: 1,268,141. Piezo-electric devices. MINNESOTA MINING & MFG. CO. 27 Jan., 1969, No. 4512/69. Heading H3U. [Also in Division H1] Delay lines make use of transducer or delay elements cut from a single crystal of Wurzite zinc oxide, the element having major faces at right-angles to an axis which makes an angle # of between 13 and 53 degrees with the crystallographic c axis. An angle # = 44 degrees is preferred. The resistivity of the element is adjusted, e.g. by doping, to a value between 0À1 and 10<SP>12</SP> ohm-cm. The delay lines described are of conventional construction. A piezoelectric amplifier may be formed by applying a D.C. bias across the delay line in the usual manner. Resonators and filters may also be formed.
Patent GB-1181956-A (GB)
Title: Method for Producing Crimped Conjugated Split Fibres
Inventor: YAZAWA MASAHIDE
IPC: D02G1/00
Filed: 1969-01-28
Abstract: 1,181,956. Conjugated split fibres. POLYMER PROCESSING RESEARCH INSTITUTE Ltd. 28 Jan., 1969, No. 4616/69. Heading B5B. Crimped, conjugated split-fibres are produced by stretching together, simultaneously and in mutual contact, two films of different polymers which have mutual affinity but different heatshrinkability and which are stretchable with substantially the same stretch ratio to form an integral conjugated stretched film, splitting this film into fibres and developing crimp in the fibres by heating under tensionless conditions. A solvent, swelling agent or adhesive may be placed between the films during stretching to assist their mutual adhesion. Conventional filmsplitting methods are used, e.g. a rotating file. Many suitable pairs of polymers are listed, which may be; (a) two homopolymers differing only in crystallinity; (b) a homopolymer and a copolymer based on the same homopolymer; (c) two copolymers based on the same principal monomer but having a different content of comonomer or: (d) the same polymer prepared under different polymerization conditions. The following are exemplified: (1) a homopolypropylene-copoly(propylene-ethylene) conjugate made by dry stretching; (2) a polyacrylonitrilepoly(acrylonitrile-methylmethacrylate) conjugate made by stretching in high-pressure steam; (3) a polyethylene terephthalate-copolyethylene (terephthalate-isophthalate) conjugate made by a double dry stretch and; (4) a nylon-6-nylon-66 conjugate made as (3). Crimping is preferably effected at a temperature higher than any temperature applied to the films in their previous processing history.
Patent GB-847771-A (GB)
Title: Decorative illuminating device
IPC: F21W121/04
Filed: 1959-02-10
Abstract: 847,771. Ornamental lamp attachments. BOSSI, F., and POZZOLI, V., [trading as AMBOVA [firm of]]. Feb. 10, 1959 [Jan. 10, 1959]. No. 4653/59. Class 75(3). [Also in Group XV] An illuminated decorative . device comprises a light source and a deformable thread-like non- resilient element on which is threaded a number of perforated transparent and light-reflecting bodies. As shown, wires 2 anchored to a lamp socket of insulating material carrying a lamp 5 and a reflector 6 support transparent perforated beads 3. The device may be arranged to simulate a butterfly, flower or star.
Patent GB-861999-A (GB)
Title: Improvements in atomising apparatus for the production of medicinal mists
Inventor: BRIGHT-SMITH JOHN VANDELEUR
IPC: A61M11/06
Filed: 1956-02-14
Abstract: 861,999. Spray-producers. DAVIDSON, URWIN & CO. Ltd. May 14, 1957 [Feb. 14, 1956], No. 4663/56. Class 69 (3). A phial 1 containing a medicinal liquid to be atomized houses an atomizer device depending from and attached to a cover 3, and the device includes a column 11-13 with a bore 10 through which atomizing gas is passed under pressure from an inlet 14. The lower end of the bore is closed and the gas flows through a transverse bore 17 in the column and a bore 24 in a flanged collar 18 held in place by a plate 19. The gas stream from an orifice 25 strikes the outer wall 21 of an annular groove and draws up liquid through a tube 28 and an outlet 22 from which it is sprayed. A removable cylindrical baffle 6 with outlets 9 surrounds the device and eliminates the coarser particles, and the fine spray leaves from an outlet 5. With the baffle removed, the spray from the device strikes the phial wall before flowing from the outlet 5.
Patent GB-569591-A (GB)
Title: Improvements in or relating to polyvinyl acetate emulsions
IPC: C09D131/04
Filed: 1943-03-23
Abstract: The invention consists in an aqueous polyvinyl acetate emulsion capable of producing stable water-resistant films and coatings comprising resin and a plasticizer therefor compatible in part at least with the resin and being in excess of 40 per cent by weight of the polyvinyl acetate with or without a thickener, a pigment or a filler.  The emulsion may be used for coating fibrous materials or fabrics, or for use in water-resistant paints.  Any compatible plasticizer may be used; specified are di-isobutyl adipate, di-butoxy ethyl phthalate, ethyl phthalyl ethyl glycollate dibutyl phthalate and triethylene glycol di-2-ethyl butyrate.  Mixtures of compatible with incompatible plasticizers may be used, e.g. mixtures with glycerine or glycols.  Specified thickeners are sodium alginate (Kelgin solution), and locust bean or lakoe gums.  Examples are given of formul  consisting of polyvinyl acetate emulsion consisting of polyvinyl acetate emulsion and (1) di-isobutyl phthalate, chalk and lakoe gum; (2) a mixture of di-isobutyl and dibutyl phthalates, gum tragacanth, water and a colour base; and (3) the mixture of phthalates as in (2), starch, water and chalk.
Patent GB-832337-A (GB)
Title: Improvements in the preparation of peracetic acid
Inventor: STEVENS HAROLD BENSON
IPC: C07C409/26
Filed: 1959-02-12
Abstract: Peracetic acid is prepared by oxidizing liquid acetaldehyde with oxygen-containing gas in the presence of a mixture of two or more of a chloride of copper, a bromide of copper and cupric ammonium chloride, or a mixture of two or more of a chloride of cobalt and a bromide of cobalt.  Temperatures of - 30 DEG  to +60 DEG  C. are mentioned, preferably 5-40 DEG  C.  An inert diluent may be used. Generally, 0.002 to 0.20% by weight of catalyst is used based on the reaction mixture.
Patent GB-394065-A (GB)
Title: Improvements relating to golf practice balls
IPC: A63B69/00
Filed: 1932-02-19
Abstract: 394,065. Balls for games. HART, T. H., Norton, Wye Cliff Road, Handsworth, Birmingham. Feb. 19, 1932, No. 4961. [Class 132 (ii).] A combined ball and tee for golf practice comprises a rubber or leather disc b carried by a stem c passing into a ball a and connected thereto by a shoulder d. The stem c may be slidable axially, Fig. 2, or prevented from substantial axial movement as in Fig. 1, in which case the ball is packed with resilient material e such as sponge rubber or cork. A tail f may also be attached to the ball to limit the flight. Specification 356,890 is referred to.
Patent GB-1530452-A (GB)
Title: Speed sensing
IPC: G01P3/48
Filed: 1975-02-05
Abstract: 1530452 Measuring diesel engine speed SMITHS INDUSTRIES Ltd 5 Feb 1976 [5 Feb 1975] 4975/75 Heading G1N A method of sensing the speed of a diesel engine involves disposing a thermistor probe 17 in an inlet manifold 11 of the engine so that the probe temperature falls each time air is drawn into the head 16 through the inlet 11 so that the thermistor resistance varies cyclically at a frequency of half the engine rotational speed. This frequency is sensed by a circuit Fig. 4 (not shown) including an integrator meter (44) which displays the average value of the current pulses from drive circuit (43) with respect to time, on a scale calibrated in revolutions per minute. It is stated that use of a differential amplifier (40) reduces errors due to variations of ambient temperature. The thermistor may be mounted in the common inlet (15) when the frequency of the output signal of transistor (29) would be twice engine speed.
Patent GB-178627-A (GB)
Title: Stop-gear for internal combustion engines
IPC: F02D17/00
Filed: 1921-03-03
Abstract: 178,627. Healy, J. March 3, 1921. Stop-gear. - An emergency stop-gear for internal-combustion engines comprises a lever B carrying a latch engaging a slidable rod C connected to a member E, which operates a stop device, such as the inlet or exhaust valves or a pump relief valve when the rod C is released from the latch and is drawn down by a spring &c. S. The latch is adapted to be released at excessive speed by the governor acting on the lever B at the point P. A handcontrolled solenoid M may be used to operate the lever P. The rod C is restored by means of a hand lever H. Reference has been directed by the Comptroller to Specification 7800/96.
Patent GB-472377-A (GB)
Title: Improvements in or relating to electrolytic condensers
IPC: H01G9/00
Filed: 1937-02-19
Abstract: 472,377. Electrolytic condensers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 19, 1937, No. 5066. Convention date, Feb. 22, 1936. [Class 37] In an electrolytic condenser the anode 1 is cup-shaped and the end wall 15 of the outer vessel 9 constituting the cathode carries a member 10 extending into the hollow cup of the anode so that the anode-cathode separation is substantially con stant. A paste-electrolyte wound condenser may be suspended within the space 14 from the end wall 15 and the two con densers may be used be fore and after a choke ir a smoothing circuit. A vent may be provided consisting of a pierced rubber band 12 around a part of the casing which has perforations 11. Specifications 399,400 and 453,986 are referred to.
Patent GB-1129211-A (GB)
Title: Process for separating from organic liquid moderator-coolants liquid chemical products boiling at high temperatures
Inventor: CARDOZO RAPHAEL LOPES
IPC: G21C19/307
Filed: 1966-02-04
Abstract: 1,129,211. Nuclear reactor moderator-coolants. EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM). 4 Feb., 1966 [9 Feb., 1965], No. 5066/66. Heading G6C. [Also in Division C5] An organic liquid which has been used as a moderator-coolant in a nuclear reactor is purified by extracting with a liquid so that two liquid phases form, and separating one of the phases containing high-boiling impurities. Terphenyl containing polymerization products is extracted with an ethanol-water-toluene mixture at an elevated temperature. The heavy phase containing high-boiling impurities is removed and the light phase on cooling separates into two further phases, the light phase of which is returned to the extraction stage and the heavy phase distilled to yield purified terphenyl and an extractant distillate which is returned to the process. The liquid extractant may also contain aldehydes, esters, ethers, ketones, or aliphatic hydrocarbons and may be, for example, a mixture of acetone and water.
Patent GB-775814-A (GB)
Title: Improvements in or relating to saw-mills
Inventor: PIERCEY ROGER JOHN
IPC: B27B15/04
Filed: 1955-02-21
Abstract: 775,814. Sawing. STENNERS OF TIVERTON, Ltd. Jan. 26, 1956 [Feb. 21, 1955], No. 5182/55. Class 145 A band or circular saw mill has a deflector 2 which is fitted rearwardly of the saw 16 and is mounted so that, during feed of the log to the saw, it is moved out of the path of the log but, during return of the log to its initial position, can move into the path of the sawn face of the log to deflect the returning log laterally clear of the saw. The deflector is preferably bevelled to give a V-shaped edge 10 so that, if'the cut-off plank returns with the log, it is also deflected laterally but the bevel may be provided only on the edge of the deflector nearest the sawn face of the log. The deflector may be controlled manually of by the reciprocating movement of the log carriage and/or be biased to the deflecting position by weight or spring means and it may be a plate guided in a straight or curved path sloping downwardly away from the saw or mounted on pivoted links. As shown, the deflector is on a pivoted arm 3 weighted at 6 and the face 11 is flat so that it is depressed by the log during feed to the saw. An abutment 13 on the deflector limits the upward movement by engaging an adjustable stop 23. The log carriage comprises two tables 14, 15 arranged one on each side of the saw and movable in unison on rollers 17 carried by spindles 18 supported in ball bearings 19. One of the spindles 18 may provide the pivot for the deflector.
Patent GB-850596-A (GB)
Title: Improvements relating to the swinging of compasses
IPC: G01C17/38
Filed: 1957-02-15
Abstract: 850,596. Magnetic tests. SPERRY RAND CORPORATION. Feb. 15, 1957 [Feb. 23, 1956 (2)], No. 5236/57. Class 37 Apparatus for swinging the compass of an aeroplane comprises a symmetrical arrangement of five coils 16-20 (Fig. 3) which can be selectively energized with D.C. from a battery 29 to produce a horizontal magnetic field which combines with the earth's field to produce a resultant magnetic field equal in magnitude to and at a known angle to the horizontal component of the earth's field, which can be applied to the compass system of the aeroplane to produce a calibration chart, or enable suitable compensation for the inherent magnetism of the aircraft to be effected, without rotating the aircraft. If the compass system is a fluxgate valve, the windings 81, 82, 83 (Fig. 6) of the flux gate can be used to produce the auxiliary magnetic field, and also to produce the compensating field to correct for the aircraft's magnetic effects.
Patent GB-1440745-A (GB)
Title: Process for the production of low molecular weight cycloaliphatic diglycidyl esters
IPC: C07D301/30
Filed: 1975-02-07
Abstract: 1440745 Diglycidyl esters of cycloaliphatic dicarboxylic acids BAYER AG 7 Feb 1975 [8 Feb 1974] 5292/75 Heading C2C A process for the production of a diglycidyl ester of a cycloaliphatic dicarboxylic acid comprises reacting a cycloaliphatic dicarboxylic acid with an excess of an epihalohydrin at a temperature of from 80 to 115 C. in the presence of from 0À5 to 4% by weight, based on the acid, of at least one secondary or tertiary osodium or o-potassium phosphate as catalyst and dehydrohalogenating the resulting 3-halogen-2-hydroxypropyl carboxylic acid ester with aqueous alkali. An example describes the production of hexahydrophthalic acid diglycidyl ester.