baber/WOPTO huggingface dataset:
Patent GB-939141-A (GB)
Title: A new or improved a.c. amplifier system
Inventor: HUTCHEON IAN CARRODUS
IPC: H03F1/30
Filed: 1959-04-21
Abstract: 939,141. Phase-sensitive circuits. GEORGE KENT Ltd. Jan. 26, 1960 [April 21, 1959], No. 13560/59. Class 38 (4). In a phase-sensitive circuit an alternating current input signal is fed through a phase-shift network R1, R2, C1 to a direct coupled current amplifier, comprising transistors J1, J2, the output of which is fed to the base electrode of a transistor J3 supplied with a direct-current bias through a resistor R13 and a full-wave rectified pulsating bias through a resistor R12. The output from the transistor J3 controls the base bias to a transistor J4 connected to vary the heating current through the heaters of thermistors TH1, TH2 supplied via diodes D1, D2 from a centre-tapped transformer T1. The thermistors are connected as shown so that the alternating current output through a capacitor C2 is dependent on the ratio of the resistances of the thermistors. In the absence of an input signal, the resistances are equal and the output is zero since the half-cycles of current applied alternately to the heaters of thermistors TH1, TH2 are symmetrical. An applied input signal is additive to one half-cycle and subtractive to the succeeding half-cycle causing the resistance ratio of the thermistors to change so that the output represents the magnitude of the input signal. The effects of ambient temperature change on the ratio of the resistances of thermistors TH1, TH2 and change in the direct-current characteristics of the transistors are compensated by a thermistor TH3 connected to vary the direct current bias to the transistor J1, having a heater energized by the total current through the heaters of thermistors TH1, TH2.
Patent GB-781621-A (GB)
Title: Apparatus for extinguishing fires
Inventor: BETZLER MARTIN
IPC: A62C13/00
Filed: 1955-05-10
Abstract: 781,621. Fire extinguishing. MINIMAX AKT.-GES. May 10, 1955, No. 13574/55. Class 47 In a fire-extinguisher in which a powder 9 is supplied to a nozzle 5 by gas from a cylinder 2, an auxiliary chamber 8 is provided which is separated from the powder container 1 by a frangible diaphragm 7. When the pressure reaches a predetermined amount, the diaphragm breaks and the sudden decrease in pressure serves to break up the powder 9. One auxiliary chamber may be associated with several powder containers.
Patent GB-140122-A (GB)
Title: Improvements in and relating to machine guns
IPC: F41A3/50
Filed: 1918-08-21
Abstract: 140,122. Hazelton, G. Aug. 21, 1918. Machine guns.-Relates to automatic guns of the kind in which the barrel recoils and operates a crank which rotates continuously in the same direction to operate the breech mechanism, one shot being discharged for each revolution. The invention consists in a single-barrel gun having a crank which is constrained to have sliding movement only for the initial recoil and final forward movement, and a trip device to cause the crank to rotate', which device moves aside to allow the crank to make a complete revolution. The invention is shown applied to a Maxim gun, the crank 3 being retained in the firing position by a stop 10. On recoil, the crank moves rearward from under the stop 10, and is rotated a complete revolution, first by the contact of a spring-controlled trip device 12 with a projection 11 on the crank and, after the deadcentre is paseed, by the usual return spring 6. The trip device 12 is pivoted at 14 and yields against the action of a spring 13 to permit the projection 11 to make a complete revolution. To alter the leverage exerted by the trip device 12 on the crank and thereby vary the rate of fire, the device may be vertically adjusted by rack-andpinion gear 15, 16 operated from a milled head 17. The crank is rotated by hand through a chain 8 connected to a free-wheel device 7 on the crankshaft. The cartridge belt is fed by a bell-crank lever 19 worked by a slide 20 which is connected by a rod 21 to the link 22 that connects the return spring 6 to a crank 23 on the main shaft.
Patent GB-708827-A (GB)
Title: Manufacture of silicone oils
IPC: C08G77/00
Filed: 1951-06-08
Abstract: Silicone oils are made by reacting methyl dichlorosilane, alone or in admixture with dialkyl- and/or diaryl-dichlorosilanes, with a saturated aliphatic monohydric alcohol containing from 1 to 4 carbon atoms in amount of less than 2 mols. per mol. of silane(s) and hydrolyzing the resulting composition with water.  The hydrolysis may be effected in the presence of an inert solvent, e.g. methylene chloride.  In examples, (1) a solution of methyl dichlorosilane in methylene chloride is mixed with ethyl alcohol and the mixture poured on to ice.  Subsequent separation of the non-aqueous and removal of the solvent yielded an oil; (2) a mixture of methyl dichlorosilane, dimethyldichlorosilane and ethyl alcohol was hydrolyzed without the use of a solvent.
Patent GB-137668-A (GB)
Abstract: 137,668. Bluemel Bros., and Saxelby, F. A. March 7, 1919. Wind-screens for motorcycle side-cars, comprising frame members fitted with celluloid and like fillings, are provided with side supporting rods or tubes adapted to slide and be adjustably fixed in clamps, of the construction shown in Fig. 5, attached to the sides of the car. Fig. 3 shows one of the side frame members, g being the rod or tube which engages with the clamp. The clamp has jaws h, j which are pressed into engagement with the tube by a bolt and nut against the action of spring, lugs o, n being provided to prevent rotation of the jaw j when the nut is turned. The lower edge of the screen is fitted with an apron d which is attached to the side-car body by snapfastenings e. The front and side members of the screen are detachably secured together, as by screws.
Patent GB-819396-A (GB)
Title: Improvements in or relating to extruded hollow, elongated shapes of solid polyethylene
IPC: B29C48/09
Filed: 1957-04-30
Abstract: A method of moulding hollow elongated articles e.g. tubes, of polyethylene &c. comprises extruding the molten material and quenching it to a stable form and thereafter heating the external surface of the article to a temperature and for a sufficient time to relax the material to the substantially same extent as an annealed object of the same material.  The method increases the strength of the article.  The heating may be to a temperature sufficient to melt the external surface of the article and may be from 5 DEG C. to 10 DEG C. and up to 50 DEG C. above the melting point of the resin. Tables of heating times and temperatures are given showing the resulting increase in tensile strength.  Specifications 471,590 [Group IV], 639,306 and 682,420 [both in Group IV(a)] are referred to.
Patent GB-576312-A (GB)
Title: A process for the manufacture of salts of insulin and of adrenaline
IPC: C07K14/62
Filed: 1943-08-25
Abstract: Salts of adrenaline or analogues thereof of the general formula <FORM:0576312/IV/1> wherein R1 represents H, aryl, hydroxy or alkoxy, R2 and R3 each represent H, hydroxy or alkoxy and R4 and R5 each represent H or alkyl, or of insulin, having prolonged therapeutic action, are obtained by (1) reacting the bases with acyclic hydroxylated or nonhydroxylated carboxylic acids carrying at least two carboxyl groups and containing from 5 to 13 carbon atoms in the molecule or their carboxylic acid esters containing at least one free carboxy group, or (2) the double decomposition of salts, preferably inorganic acid salts, of such bases, e.g. the hydrochlorides, with alkali metal, alkaline earth (including magnesium) or ammonium salts of the carboxylic acids or their esters as defined in (1).  Specified adrenaline analogues are b -phenylethylamine, tyramine, b -(o-methoxyphenyl)ethylamine, b -dimethoxyphenyl-b -methoxyethylamine, b -phenylisopropylamine, ephedrine, pholedrine and b -3 : 4-dimethoxyphenylisopropylamine and specified carboxylic acids are adipic, pimelic, suberic, azelaic, sebacic and mucic acids. Compounds thus made may be mixed with other drugs, e.g. the corresponding salts of morphine or scopolamine, to produce synergistic effects.  In examples: (1) adrenaline, dissolved in a sterile aqueous solution of mucic acid, is diluted with water to give a convenient therapeutic standard, the pH being approximately 4.2; (2) adrenaline hydrochloride and potassium mucate are reacted in aqueous solution; (3) an aqueous solution of mucic acid is added to insulin suspended in distilled water, the mixture being shaken until solution is complete, when the volume is adjusted with water to a convenient therapeutic standard, furnishing a product of pH 3.6; (4) ephedrine and suberic acid are shaken with water and the volume adjusted, giving a solution of pH 6.3.ALSO:Salts of adrenaline or analogues thereof, of the general formula: <FORM:0576312/VI/1> wherein R1 represents H aryl, hydroxy or alkoxy, R2 and R3 each represent H, hydroxy or alkoxy, R4 and R5 each represent H or alkyl, or of insulin having prolonged therapeutic action, may be mixed with other drugs, e.g., the corresponding salts of morphine or scopolamine, to produce synergistic effects.  Specified salts are, on the one hand, adrenaline, and insulin mucates and ephedrine suberate and, on the other hand, morphine and scopolamine mucates.
Patent GB-1392671-A (GB)
Title: Salts of an ester of 3-thienyl-cyclohexyl-acetic acid and  their preparation and use
IPC: C07D333/24
Filed: 1973-03-22
Abstract: 1392671 Citrates of 2-(N-hexamethyleneimino)-ethyl-(3-thienyl)cyclohexylacetate INNOTHERA 22 March 1973 [2 March 1973] 13910/73 Heading C2C The invention comprises the citrates of the ester of general Formula I which are prepared by reacting the amino ester of Formula I with citric acid. The compounds may be racemates or optical isomers depending on the optical nature of the starting amino ester. The amino ester of Formula I may be prepared by (a) condensing (3-thienyl)-cyclohexylacetic acid with a hexamethylene-imino-ethyl halide, (b) condensing a Ag or alkali metal salt of (3-thienyl)-cyclohexylacetic acid with a hexamethylene-imino ethyl halide or (c) by transesterification between hexamethylene-imino ethanol and an alkyl (3-thienyl)-cyclohexyl-acetate. ( + )- and ( - ) - 2 - (N - hexamethyleneimino) - ethyl - (3 - thienyl) - cyclohexylacetate are prepared by fractional crystallization from the quinine salts of the racemic acid obtained by heating together the acid and base followed by hydrolysis of the salt to obtain the free acid. Pharmaceutical compositions having spasmolytic, vasodilatory, analgesic anti-ischaemic activity for oral, rectal, or parenteral application comprise a citrate of a compound of Formula I together with a pharmaceutical carrier.
Patent GB-1193805-A (GB)
Title: The Proton Extractor
Inventor: OKIKIOLU GEORGE OLATOKUNBO
IPC: H01J49/42
Filed: 1969-05-15
Abstract: 1,193,805. Ion sources. G. O. OKIKIOLU. 15 May, 1969 [18 March, 1969], No. 14061/69. Heading H1D. An ion source for producing protons has the hydrogen supplied to the ion-emitting electrode d by electrolysis from a cell h. The hydrogen percolates through porous electrode d, e.g. of platinum, and is ionized by the discharge between d and b. The ions so produced are accelerated by negative electrode b out of the aperture a for use with a number of similar units in a toroidal plasma production unit, Fig. 2 (not shown). Reference is made to use for propulsion or for producing a high-velocity hydrogen jet for a chemical rocket.
Patent GB-131738-A (GB)
Title: Improvements in and relating to Flying Machines.
Inventor: EAGLES GEORGE ALBERT
IPC: B64C33/00
Filed: 1918-08-30
Abstract: 131,738. Eagles, G. A. Aug. 30, 1918. Propelling; aerial machines without aerostats, -Ornithopters have one or more reversible propellers m, Fig. 1, at each end of the fuselage b, and pairs of planes a, pivotally and transversely mounted on carrier frames c, which are vertically reciprocated in guides on the fuselage. The frames c are actuated by cranks set at different angles on a longitudinal shaft. The planes oscillate on transverse spindles d carried by the frames c and attached thereto by stays c, g, the latter being secured to a cross-bar f. The pivotal action of the planes a is controlled by a spring stay h, Fig. 4, and a collapsible stay i, or each plane may have a pivot plate or disk mounted in a flanged ring on the carrier frame and provided with one plain and one spring-controlled stop. Planes, construction of.-The outer and inner edges a<1>, Fig. 6, of each plane are turned down to minimize loss of power due to the slip-stream. Platforms and stages.-A promenade deck may be added, and used as a magnetic-resistance landing-stage for smaller aircraft.
Patent GB-342225-A (GB)
Title: Improvements in and relating to tunnel drying ovens
IPC: F26B21/00
Filed: 1930-05-07
Abstract: 342,225. Drying-tunnels. AKTIEBOLAGET SVENSKA FL€KTFABRIKEN, 8, Kungsgatan, Stockholm. May 7, 1930, No. 14082. Convention date, May 7, 1929. [Class 34 (ii).] Tunnel drying ovens with air circulation therethrough have in combination internal and external heat recovery means transferring heat from the evacuated to the incoming air. The material to be dried passes in trucks on tracks 1, 2, air being circulated spirally over heaters 3 by fans 5 on a shaft 6. The hot, moist air is drawn by a fan 10 through inlets in a tube 12 above the heaters 3 into internal heat exchange tubes 3x, through a conduit 11 to a chimney 13. Reversing dampers 8, 9 in the fan casing are turned at intervals to determine the direction of air circulation. Fresh air enters through an external heat exchanger 22 through which the moist, hot air is exhausted from the tubes 3x to the chimney 13. The fresh air is then further heated in spiral passage over the internal heat exchange tubes 3x and heaters 3 to the tube 12, whence it is drawn through the tubes 3x to the chimney. The external heat exchanger 22 may be placed between the tubes 3x and the chimney, or between the tube 12 and the tubes 3x. In the second case, fresh air passes through the heat exchanger 22 to the outside of the tubes 3x at their outlet end. In a third arrangement, two external heat exchangers 22 are used, one between the tube 12 and the tubes 3x, and the other between the outlet of the tubes 3x and the chimney, so that fresh air passes first through the heat exchangers 22, then over the internal heat exchanger 3x and internal heaters 3 to the tube 12.
Patent GB-368140-A (GB)
Title: Improvements in or relating to spectacles
IPC: G02C5/22
Filed: 1931-05-13
Abstract: 368,140. Spectacles. BARNES, E., Newton Works, E y r e Street, Sheffield. May 13, 1931, No. 14100. [Class 97 (i).] To minimize the bending moment exerted on the frame when a pair of spectacles is opened the stops on the sides are arranged to make contact with the lens structure at points which are separated by a distance less than that between the hinge pivots. In Fig. 2 the sides 20 are pivoted at 21 to lugs on the frames, and have extensions 25 beyond the pivots carrying stops engaging the frames 22 at points 27 which are closer together than the pivots. In the form shown in Figs. 5, 7 and 8, the extensions 25 and stops 26 are made separately from the sides 20 and comprise a unit having a slotted part 31 which is pierced at 32 for the pivot 21. The forked end 33 of the unit remote from the stop forms a support for a spring connecting it to the side 20 as described in Specification 317,689, [Class 97 (i), Optical systems &c.]. The side 20 has a hollow cylindrical lug 34 engaging in the fork 33 and is pivoted to the fork by a rivet &c. 36. The spring 37 is coiled round the rivet 36 and is anchored at one end 38 to the part 35 of the hinge unit, and at the other end 39 to the side 20.
Patent GB-187270-A (GB)
Title: Portable tool for cutting branches or stalks
IPC: A01G3/025
Filed: 1921-05-20
Abstract: 187,270. Barbezieux, A., and Maurel, L. May 20, 1921. Circular-saw machines.-A portable rotary tool for cutting sugar-cane, underbush, stalks. and the like and for pruning trees has its driving- mechanism provided with cushioning-devices for facilitating starting and stopping. The tool comprises a hand-supported frame 1 enclosing a multiplying gear train connected to a shaft 4 on which is mounted a circular saw 3. The multiplying-train is driven by bevel-gear from a shaft 17 mounted in ball bearings in the frame and provided with a double-thread 19. The end of a shaft 17 projects into a sleeve 20 which is secured to the end of a flexible driving-shaft 23. Studs 21 on the sleeve engage in the screw-threads on the shaft 19, and, when the shaft 23 commences to rotate, ride up these threads, compressing a spring 25 encircling the shaft 17. A ball 27 bears against the shaft 17 when it reaches the end of the sleeve. When the rotation of the flexible shaft is stopped the sleeve moves off the shaft 17 until the studs engage grooves in the shaft at right-angles to its axis, thus permitting the cutter and its multiplying-gear to rotate freely. A spring 29 forces the studs 21 into the screw threads when the flexible shaft is rotated. Hinged covers 31 which may be pressed back within a fixed case 30 protect the cutter when it is not in use.
Patent GB-659226-A (GB)
Title: A method and a device for the transport of bottle groups
IPC: B65G49/06
Filed: 1949-05-26
Abstract: 659,226. Packaging-machines; unpacking. VERKSTADS AKTIEBOLAGET MEKANO, May 26, 1949, Nos. 14139 and 14140. Convention dates, May 27, 1948, and May 20, 1949. [Class 94(i)] [Also in Group XXX] A machine for removing a group of bottles from a filled crate comprises shifting means 12 which raise the bottle group from the crate 2, whilst the bottles are guided by guiding means 8, a plate 13 being introduced laterally under the bottle group when in the upper position to support it. The machine may be modified to insert a group of bottles into an empty crate, in which case the operation is reversed. As shown in Fig. 1, a crate 2 arrives from the left on rollerway 4 against step 5. The crate has a longitudinal lath bottom through which pass shifting rods 12 carried by reciprocating plate 10 moving in guides 11. After the guiding rods 8 carried by plate 7, reciprocating between guides 6, descend to a position between the bottles the shifting rods and guiding rods both move upwards to lift the bottle group to the upper position at which position the plate 13 is slid forward beneath the bottle group and the guiding rods 8 then rise further and the shifting rods 12 descend to allow the bottle group to be discharged to the right by pusher 15 over delivery table 3. Upper plate 13 then returns to the left and stop 5 allows gate 2 to move to the right over rollerway 4, thus leaving the apparatus in the original position. In a modification, Fig. 4, the plate 13 is formed by longitudinal shafts 17 rigidly carrying blades 16, the shafts being rotated together by a driving bar so that in the one position the blades support the bottle group as shown, and in the second position the blades hang vertically downwards so that the plate may slide beneath the bottle group in the upper position and between the shifting rods 12. This form of plate permits the bottles to be discharged in a direction perpendicular to the paper.
Patent GB-1528287-A (GB)
Title: Electric arc-welding
IPC: B23K9/073
Filed: 1976-04-07
Abstract: 1528287 Automatic control of arc welding L'AIR LIQUIDE SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 7 April 1976 [8 April 1975] 14200/76 Heading G3R In an arc welding process, a consumable wire electrode is fed to the arc by a motor to which there is supplied a voltage dependent on the actual arc voltage, so that the length of the arc is stabilized. A control voltage is formed proportional to the instantaneous arc voltage, and from this is subtracted a steady D.C. voltage to produce a mean difference voltage equal to the rated voltage of the motor. The ratio of proportionality and the magnitude of the D.C. voltage are each adjustable to produce a desired response in the motor voltage when the arc voltage varies. As shown in Fig. 1, an A.C. generator 7 supplies current to an arc between a workpiece 1 and a consumable wire 2 advanced by rollers 3 driven by a motor 4. The arc voltage is sensed and rectified by a bridge 12 connected through a relay 13 to a circuit supplying current to the motor 4. This circuit includes resistors 14, 21, rheostats 15, 20, and a capacitor 22. Resistor 14 and rheostat 15 produce a control voltage at tapping 16 which is proportional to the arc voltage, and the motor is driven by the difference between this control voltage and a smoothed D.C. voltage produced across the capacitor 22 by the rheostat 20. By adjusting the settings of the two rheostats, the mean voltage applied to the motor can be made equal to its rated voltage, and the ratio between changes in the arc voltage and corresponding changes in the motor voltage can be set at a desired value, Figs. 2-4 (not shown).
Patent GB-141230-A (GB)
Title: Improved device for cutting and grinding or disintegrating roll or cake tobacco
IPC: A24F23/04
Filed: 1919-06-05
Abstract: 141,230. Varley, J. E. June 5, 1919. Mills and apparatus.-A pocket device for containing, cutting, and shredding tobacco includes a disintegrating-device l rotated by a knob l<2>. This device may comprise rows of pins in staggered relation co-operating with teeth or roughened surfaces formed on the lid. Two spiked or roughened surfaces may be rotated in opposite directions.
Patent GB-437965-A (GB)
Title: Improvements in walling ties
IPC: E04B1/41
Filed: 1934-05-11
Abstract: 437,965. Wall-ties. PARKER, W. J., Sunny Croft, Pentwyn Avenue, Blackwood, Monmouthshire. May 11, 1934, No. 14264. [Class 20 (iv)] A tie for cavity walls comprises a straight central portion with bent ends set in parallel planes, the ends of the tie being adapted to key into the bonding of the walls, with the interconnecting portion sloping upwardly to prevent moisture from passing from one wall to the other and also to prevent mortar &c. from lodging on the tie. The ends 1, 2 are flattened and either or both of the ends may be bifurcated. The straight central portion 6 may be of round or rectangular section, a longitudinal edge being uppermost in the latter case so that mortar &c. cannot lodge on the tie. The ends are bent about lines disposed at right angles to the axis of the intermediate portion, so that the axes of the ends and of the intermediate portion lie in a single vertical plane.
Patent GB-142549-A (GB)
Abstract: 142,549. Mackintosh Cable Co., and Sankey, P. W. Feb. 5, 1919. Spiral springs.-A suspensionhook 4 is provided at an angle to the longitudinal axis of a clamp 1, having a recess 2 for a block 6 which, as shown, grips the ends of a band or strip 9 supporting an electric cable 10, but which is applicable, according to the Provisional Specification, for securing the ends of springs which have to be spirally wound up. The recess 2 may be closed at one end. The Provisional Specification describes also a clamp with a hook or other attachment parallel with the clamp, and a block bent from sheet metal, or formed in two parts. The groove may be prismatic in section, and a number of short blocks may be used in place of one long block.