baber/WOPTO huggingface dataset:
Patent GB-503154-A (GB)
Title: Improvements in or relating to variable-pitch airscrews
IPC: B64C11/44
Filed: 1937-10-02
Abstract: 503,154. Screw propellers. ROTOL AIRSCREWS, Ltd., and LUSTY. 1. Oct. 2, 1937, No. 26719. [Class 114] In a variable-pitcln air-screw wherein a constant speed electric motor is used for adjusting the blades there is provided a differential gear one element of which is coupled to the motor and another to the air-screw shaft and a third element connected with the others is directly coupled to the blades. A gear wheel 3 free on the propeller shaft 1 has a bevel portion 4 engaging a bevel wheel 5 on the root of the blade 5a. A second pinion 2 is secured to the shaft 1 and both are geared with planet pinions 7, 8 mounted on a carrier 9. The carrier 9 has a portion 10 which forms the rotor of an alternating current self-starting synchronous motor of which the stator I is secured , to the front of the engine. The stator is supplied with three-phase alternating current of controlled periodicity from a generator 12 which is driven by a direct current motor 13 connected to the battery 14 through a variable distance 15. The frequency of the current and therefore the speed of the motor 10, 11 is determined by adjusting the speed of the motor 13. When the propeller shaft 2 is rotating at the set speed of motor 13, the motor 10, 11 is inoperative and the blade remains at fixed pitch. In an alternative construction the motor 19 drives the carrier cage. 9 through pinion gear 17, 16 and the speed of the motor is as before adjustable by the rheostat 15. Specification 457,808 is referred to.
Patent GB-1089594-A (GB)
Title: Process for recovery of vinyl acetate
IPC: C07C69/01
Filed: 1966-06-15
Abstract: Vinyl acetate is separated from a gaseous feed mixture of vinyl acetate, ethylene, acetic acid, oxygen, carbon dioxide and water by distillation to obtain a bottoms fraction comprising acetic acid, and an overhead gaseous fraction which is cooled to condense vinyl acetate and water which is recovered.  The bottoms fraction which may contain water, is rectified to yield anhydrous acetic acid, and the overhead gaseous fraction yields an upper organic layer and a lower aqueous layer.  The gaseous feed is preferably introduced at an intermediate point in the distillation column. In an example a flow diagram of suitable apparatus is described.
Patent GB-1275312-A (GB)
Title: 2-formamido-4-hydroxy pyrimidines and pesticidal compositions containing them
Inventor: SNELL BRIAN KENNETH
IPC: C07D239/46
Filed: 1969-05-28
Abstract: 1275312 2 - Formamido - 4 - hydrozypyrimidines IMPERIAL CHEMICAL INDUSTRIES Ltd 4 May 1970 [28 May 1969] 26920/69 Heading C2C Novel pyrimidines of the formula in which R 1  is hydrogen or an alkyl group and R 3  and R 4  are each hydrogen, halogen or an alkyl group, and salts, ethers and esters thereof, are obtained by formylation with formic-acetic anhydride of the corresponding 2-aminopyrimidines and, if required, subsequent conversion by known methods to the salts, ethers or esters. The preparation of 5-(n-butyl or chloro)-4- methyl - 2 - formamido - 6 - hydroxypyrimidines in which R 1  is hydrogen, methyl or ethyl is described. The pyrimidines possess fungicidal properties and are used in conventional forms for pre- and post-emergence and systemic protection of plants from fungal disease.
Patent GB-975627-A (GB)
Title: Improvements in electronic organs
Inventor: BRAND JOHN RAYMOND
IPC: G10H1/12
Filed: 1963-07-08
Abstract: 975,627. Electrophonic musical instruments. WURLITZER CO. July 8, 1963, No. 26949/63. Heading G5J. [Also in Division H3] A tone-producing system for an electronic musical instrument comprises a plurality of audiofrequency generators producing complex electrical oscillations connected in groups of sequential semi-tones to band-pass tone filters each consisting of interconnected inductance and capacitance elements tuned to pass the fundamentals and discriminate against the harmonics of the group of generators to which it is connected, each filter having at least two inductances and being overcoupled to have a double-peaked response curve with the frequency range between the peaks substantially equal to the frequency span of the fundamentals of the group of generators. As shown in Fig. 1 forty eight tone generators 10 are divided into eight groups comprising a half-octave of semitones and connected through switches 12 to junctions 14. Junctions 14 are connected through capacitors 16 to a common bus 18 and in the sixnote groups through capacitors 20 to eight busses 22 which are connected to contacts 24. Contacts 24 are engaged by a common movable switch arm 28 which is shown schematically as a plurality of ganged arms. Switches 28 are grounded and comprise a flute stop. Switch contacts 24 are connected through resistors 30 to filters 32, there being eight such filters all connected to a common bus 34, amplifier 36 and loudspeaker 38. Common bus 18 is connected to a fixed switch contact 42 of an oboe stop and to a fixed switch contact 44 of a trumpet stop. The oboe stop includes a movable switch arm 46 which is grounded in its rest position and is shunted to ground by a resistor 50, connected to filter F1 through resistor 52 and to filter F3 through resistor 54. Similarly the movable switch arm 56 of the trumpet stop is connected to filter F2 through resistor 62 and the to filter F4 through resistor 64. All the filters 32 are of the same configuration although the values of the electrical components differ. Each filter comprises inductances 88, 92, 106 and capacitors 100, 104, the inductive coupling being through the inductance 106. The filter response curve (Fig. 4, not shown) is a double peaked curve, the frequency range between the two peaks being the frequency range of the fundamentals of the six notes fed into any filter. The response curve has a sharp upper cut-off, thus eliminating the second harmonic and all higher frequencies, and a relatively less sharp lower cutoff which cuts down the fundamentals of notes falling below the first peak but allows some of the harmonics to pass through. The Specification includes modifications of the filters (Figs. 5 and 6 not shown).
Patent GB-879812-A (GB)
Title: Polishing plate glass
IPC: B24B7/24
Filed: 1960-08-04
Abstract: 879,812. Polishing glass ribbons. PITTSBURGH PLATE GLASS CO. Aug. 4, 1960 [Aug. 11, 1959], No. 27039/60. Class 60. The felts of polishing runners 22 of a twinpolishing apparatus 12 operating on one or both faces of a glass ribbon 6 are scraped, to prevent coating of the polishing media, by attaching at intervals adhesive strip material 26 to the glass surface so that the strips extend beyond the surface under treatment ; they may be of adhesive metal e.g. lead, tape having an optimum thickness of 0À008 in. and dimensions of 1 X 2 ins. for felts of 32 ins. diameter, spaecd at least 120 ins. apart on the ribbon. The unpolished glass areas under the tapes are removed from the sheets into which the polished ribbon is cut. U.S.A. Specifications 1,759,820 and 1,887,554 are referred to.
Patent GB-209197-A (GB)
Title: Improvements in and relating to distributors for magneto electric machines
IPC: F02P7/02
Filed: 1922-10-06
Abstract: 209,197. British Thomson - Houston Co., Ltd., Young, A. P., and Warren, H. W. H. Oct. 6, 1922. Rotary distributors; boxes and cases.- In a distributor head of the type described in Specification 115,375 wherein the head is reduced in diameter to form a spigot joint with the end plate of the magnet, the portion of the distributor head which projects into the magnet casing is made of a reinforced material which will adhere when moulded with the rubber compound forming the main portion of the distributing head, and which will not shrink or distort with age or when subjected to heat or vibration, so preserving the normal clearance between the fixed and rotating distributor contacts. The reinforcing material may consist of rubberized fabric or fabric saturated with a condensation product, or the spigot and the adjacent portion of the distributor head may be formed of a resinous product moulded and heated with a filling material in contact with the rubber compound portion of the head.
Patent GB-1206228-A (GB)
Title: Improvements in or relating to pea harvesters
IPC: A01D57/02
Filed: 1968-06-07
Abstract: 1,206,228. Agricultural implement. RUSTON'S ENG. CO. Ltd. and E. H. RUSTON. 22 May, 1969 [7 June, 1968], No. 27095/68. Heading A1F. An agricultural implement such as a pea or green crop harvester having a cutter knife, has a rotatable tined reel which is driven from a power shaft via a continuously variable ratio belt drive. The belt drive comprises two fixed frusto conical sheaves 17, 18 and one axially movable sheave 19 all mounted on an idler shaft 9. The idler shaft is movable between the drive shaft 2 and the reel shaft 5 by means of the pivoted arm 11 which is itself moved by the hydraulic actuator 14. The sheave 19 is keyed to the idler shaft so that the two are constrained to rotate together.
Patent GB-826075-A (GB)
Title: A device for the frying, at constant temperature, of various foodstuffs, especially fish
IPC: A47J37/12
Filed: 1957-08-28
Abstract: 826,075. Frying-apparatus. ROSA, G. Aug. 28, 1957 [Aug. 28, 1956], No. 27106/57. Class 28 (1). [Also in Group XI] Fish &c. are fried on a grid f on heaters g near the top oil level e so that only the upper layer of oil is kept heated the conical lower part of the tank containing water up to level d, the grid being kept at a fixed level by corner floats h in cylinders i. Residue settling to the bottom passes through the water which then deprives it of oil. The residue may be removed by cocks at the bottom. The oil level is replenished through a pipe m and the water level is replenished through a pipe n. The grid may be agitated by hand lever l and stays to keep the fish separate. A thermostat p may control the heaters g.
Patent GB-1428782-A (GB)
Title: Process for the dyeing of organic material from organic solvents by application of a short goods to liquor ratio
IPC: D06L3/12
Filed: 1973-01-19
Abstract: 1428782 Dyeing with short liquor ratio CIBA-GEIGY AG 19 Jan 1973 [21 Jan 1972] 27166/75 Divided out of 1428781 Addition to 1419126 Heading DIL Materials are dyed using a short liquor ratio by atomizing the dye from nozzle 15 onto the material contained within perforated drum 27 rotating within chamber 1, the dye liquor being recycled from the bottom of the chamber at 9 via pump 17 and line 16. The dyed material may be fixed by introduction of steam through inlet 8, the steam atmosphere being circulated through heat exchanger 11 by blower 12, and additional heat also being provided by resistor 10. The supply pipe 16 is heated at 5.
Patent GB-622488-A (GB)
Title: Improvements in or relating to windshield wipers
IPC: B60S1/20
Filed: 1946-09-10
Abstract: 622,488. Windscreen - cleaners. TRICO PRODUCTS CORPORATION. Sept. 10, 1946, No. 27193. Convention date, Sept. 10, 1945. [Class 138(i)] [Also in Group XXIV] A windscreen - cleaner comprises a flexible reciprocating transmission cable operatively connected between the wiperactuating shaft and a remotely-disposed oscillating driven shaft which is coupled to the drive shaft therefor by readily-detachable coupling means. The drive shaft 2 is driven from a motor 1, Figs. 1 and 5, which may be of suction type and is mounted on the engine side of the dashboard 4. The driven shaft 7 is journalled in a bearing member 6 on the front of the dashboard and has a socketted head 8, Figs. 5 and 7, for detachable engagement with a driving head 3 on the shaft 2. The bearing 6 forms part of a mounting bracket 15 adapted to be secured to the dashboard. Interposed between the two parts of the coupling is a rubber buffer 9 which fits over lugs 13 on the end of the head 3 and has wings 11 adapted, when the coupling is engaged, to fold over on to opposite sides of this head. A crank-arm 17 on the end of the shaft 7 carries a pair of pins 18, on each of which is pivotally mounted a link 19 having a socket 20 at each end. A transmission cable 22 extends from each side of the arm 17 to an actuating shaft of a wiper, the ends of the cable having enlargements 21 for detachable engagement with the two sockets 20 on the corresponding side of the arm. Each of the wiper-actuating shafts 27, Fig. 11, is journalled at the base of the windscreen in a housing 28 on which is pivoted a bracket 37 carrying a pair of guide wheels 38 for the cable. Intermediate the arm 17 and the corresponding shaft 27, each cable is supported by a pair of pulleys 39, Fig. 3, mounted on a pivoted arm 41 which is acted upon by a coiled spring 44 to tension the cable; the arm 41 may be fixed in its adjusted position by a bolt 49. A yieldable spring clip 50 mounted on the arm 41 retains the cable in the grooves of the pulleys. In a modified arrangement, Figs. 9 and 10, (not shown), the axes of the pulleys 39 are somewhat offset in order to ensure that the two parts of the cable extend in parallel relation to the guide wheels 38; in addition, the pulleys 39 are inclined to each other so that the cable leads therefrom in planes tangential to the guide wheels 38.
Patent GB-887915-A (GB)
Title: A new methoxyindolyl propylamine
Filed: 1958-08-25
Abstract: The invention comprises 2-(61-methoxy-31-indolyl)-1-propylamine and its picrate, and their production by reacting a primary alkyl magnesium halide with 6-methoxyindole in an inert solvent, condensing the resulting 6-methoxy-indolyl magnesium halide with a -bromopropionitrile, and reducing the 2-(61-methoxy-31-indolyl) - 1 - propionitrile to 2 - (61 - methoxy - 31-indolyl)-1-propylamine, e.g. by hydrogenation in ammoniacal alcohol ln the presence of a nickel catalyst.  The compound may be crystallised as the picrate.
Patent GB-1472596-A (GB)
Title: Method and apparatus for measuring the apparent power fed to an alternating current consumer
IPC: G01R21/00
Filed: 1974-06-20
Abstract: 1472596 Measuring power HUG INTERLIZENZ AG 20 June 1974 [21 June 1973] 27367/74 Heading G1U Apparent power fed to a load 4 is measured by connecting the current input 3 of a power meter 2 in series with the load and applying to the voltage input an auxiliary voltage in-phase with the load current and whose amplitude is controlled to equal the voltage across the load. The auxiliary voltage Uh is derived from a current transformer 6 in the supply line and is fed to an amplifier 10 whose gain is controlled by a voltage measuring device 9a connected across the supply line. The device 9a may be a comparator having the amplifier output as a second input and thus giving an error signal output to the amplifier gain control, Fig. 2 (not shown). The comparator may be a motor across the output diagonal of a 'bridge' one arm of which is connected across the supply and the other across the amplifier output, Fig. 3 (not shown). A potentiometer, field effect transistor, magnetic field sensitive resistor or transistor may be used to vary the amplifier gain.
Patent GB-518147-A (GB)
Title: Improvements relating to hollow cylindrical bodies made from glass or other fibres bound by adhesive
IPC: F16L59/04
Filed: 1938-09-20
Abstract: 518,147. Moulding pipe coverings &c. GLASS FIBRES, Ltd., and MoCANN, D. Sept. 20, 1938, No. 27376. Drawings to Specification. [Class 87 (ii)] Hollow cylindrical bodies such as insulating pipe coverings, are made from glass fibres mixed with an adhesive and applied to a mandrel. When the adhesive is dry, the body is turned or ground in a lathe to make the outer surface concentric with the inner surface. The body is slit longitudinally and removed from the mandrel. A fabric layer may be applied to the trued surface.
Patent GB-158383-A (GB)
Title: Automatic apparatus for and method of preventing or reducing the skidding of motor-road vehicles and the like
IPC: B60B39/06
Filed: 1919-11-06
Abstract: 158,383. Watkins, J. L., and Hesketh, W. Nov. 6, 1919. No Patent granted (Sealing fee not paid). Sand and the like, distributing on wheel tracks.-To reduce sideslipping of motorvehicles &c., grit is delivered to the road wheels from a rotatable tray g by means of compressed - air apparatus automatically actuated by a transversely swinging pendulum or pivoted weight n which also rotates the tray. The tray g is of annular shape and is divided into radial compartments which are adapted to register with inlet ports h, h<1>, and with outlet ports i, j having tubes k, l leading to the rear and front wheels respectively. Compressed air is delivered to the ports h, h<1> through tubes e and controlling valves f from a container d to which air is supplied by a pump driven from the fly-wheel a. The pivoted weight n is mounted on a spindle o which, through gearing p, q, drives a shaft carrying a pinion r engaging an annular rack on the tray, a ratchet device being introduced in the train of gearing so that the tray is driven in one direction only. The pivoted weight n controls the valves f by Bowden cables or the like. The apparatus may be arranged to deliver grit to the rear wheels only.
Patent GB-519326-A (GB)
Title: Manufacture of disazo-dyestuffs
IPC: C09B35/24
Filed: 1938-09-20
Abstract: 519,326. Dyes. I. G. FARBENINDUSTRIE AKT.-GES. Sept. 20, 1938, No. 27408. Convention date, Oct. 7, 1937. [Class 2 (iii)] .Disazo dyes are made by coupling tetrazotised 4:41-diaminodiphenylamine or a derivative thereof in alkaline solution with a 1-monoalkylamino-8-naphthol-mono or di-sulphonic acid (1 mol.) and with a hydroxy compound of the benzene series (1 mol.). They dye leather in greenish-blue to black shades. In examples, the following dyes are described: N-monoethyl H acid #4:4<1>-diaminodiphenylamine# 3-hydroxydiphenylamine or resorcinol ; N- propyl and butyl substituted components are also specified. The Specification as open to inspection under Sect. 91 comprises the use of diaminodiphenylamine or a derivative thereof. This subjectmatter does not appear in the Specification as accepted.
Patent GB-505488-A (GB)
Title: Improved method of and apparatus for applying "centre spots" to cushion discs used in bottle and like closures
IPC: B21D51/46
Filed: 1937-10-08
Abstract: 505,488. Crown corks. CROWN CORK & SEAL CO., Inc. Oct. 3, 1937, No. 27428. Convention date, Nov. 11, 1936. [Class 125 (iii)] When applying centre " spots " to the cushion discs of crown corks, the spots, after the punching operation in which they are punched out and deposited on the cushion discs under heat and pressure, are then subjected to heat without pressure by moving the crown corks through a zone in which the effective heat is somewhat lower than that in the applying operation, and thereafter the spots are subjected to steady pressure while the crown corks continue their movement. In the latter stage, the heat applied is sufficient to maintain the adhesive, which may be n nitrocellulose-resin composition or guttapercha, somewhat plastic; and the crown corks leave the dial in which the pressure is applied, with the adhesive still tacky, whoroupon they are permitted to cool without pressure. In the particular embodiment, the corks 10 are carried along a trackway 11, and are preliminarily heated in a heater 12 which may be an elongated gas flame, in order to melt the adhesive by which the spots are secured to the discs ; the spots are out out by a punch 13 and are deposited, as cut out, in the corks.; as an alternative to heating the corks, the punch 13 may be heated; after the application of the spots, the corks in their passage along the runway pass through a tunnel 15 heated externally by a row of gas jets 17 or they may pass in proximity to a radiant heater enclosing an electric resistance heater, and in both instances the heating is by radiant heat only. From the runway, the corks are delivered to a dial 18, the plungers 19 of which at a region adjacent to the point at which the corks enter, are heated by a main gas burner 20 and an auxiliary burner 21.
Patent GB-625913-A (GB)
Title: Improvements in or relating to hydraulic systems for aircraft
IPC: B64C13/00
Filed: 1946-09-12
Abstract: 625,913. Hydraulic control gear. SOC. D'INVENTIONS AERONAUTIQUES ET MECANIQUES S.I.A.M. Sept. 12, 1946, No. 27437. Convention date, Jan. 7, 1942. [Class 69 (ii)] [Also in Group XXXIII] Hydraulic control gear for controlling aircraft wing-flaps comprises a jack cylinder 1 having an operating piston 15 and an additional chamber 8 with a piston 6, at one end, for actuating the piston 15 over part of its stroke to afford an intermediate position of the parts. The minor side of the piston 15 is under constant hydraulic pressure from an accumulator 30, while the major side is alternatively connected to a reservoir 41 or to a hydraulic pump 44, by means of a valve 57. The minor side of the piston 6 is vented to atmosphere through a port 12 in the cylinder 1, while the major side is alternatively connected to the reservoir 41 or the pump 44 by means of a valve 35.
Patent GB-248286-A (GB)
Title: Improvements in draught, dust and weather-excluders for sliding windows and doors
IPC: E06B7/22
Filed: 1925-11-02
Abstract: 248,286. Donaldson Manufacturing Co., Ltd., and Hadden, W. J. Nov. 2, 1925. Draught, dust, and weather excluders.-A draught-excluder for vertically or horizontally sliding windows or doors consists of a strip 1 secured to the sash or door and bent to form two limbs, one of which is adapted to cover the sill joint in the closed position, and a U- shaped piece 7 secured to the sill, the limbs being adapted to lie adjacent to each other when the window or door is closed. Ribs or corrugations 4 and 14 are provided on the devices to make draught-tight joints where secured to the window and sill. Perforations and recesses offset from each other are formed in the long and short limbs of the U-shaped piece 7, to remove water.
Patent GB-533103-A (GB)
Title: Improvements in or relating to electrodes for liquid resistances and the like
IPC: H01C11/00
Filed: 1939-10-07
Abstract: 533,103. Liquid resistances. GENERAL ELECTRIC CO., Ltd., CLIFF, J. S., and GARRARD, C. J. O. Oct. 7, 1939, No. 27448. [Class 37] An electrode for a liquid resistance together with a conducting supporting stem therefor, if any, which with the electrode is immersed in electrolyte, are so shaped as to ensure substantially uniform current density over the surface area of the electrode and the stem so as to minimize the risk of flashovers. The earthing resistance shown comprises a cylindrical metal tank 1 provided with a top cover 2 and filled with liquid electrolyte 3 to a level a short distance below the cover 2. The walls of the tank 1 form one electrode of the resistance, a terminal 4 being provided. The other electrode comprises a conducting member 5 consisting of a frustum of a cone terminating in a hemisphere and is suspended by a conducting stem 6 attached to or integral with the electrode 5. The stem 6 passes through a bushing 7 in the top cover 2 and is surrounded wholly by the insulator so that the part below the surface of the electrolyte is not in contact therewith.
Patent GB-390211-A (GB)
Title: Improvements in the production of acetaldehyde
IPC: C07C45/38
Filed: 1931-10-02
Abstract: Acetaldehyde vapours produced by the oxidation of ethyl alcohol, are cooled to a temperature substantially above the boiling-point of acetaldehyde but below the boiling-point of water, so as to condense water with only a little aldehyde.  The cooling may be to a temperature between 40 DEG  and 70 DEG  C.  The remaining vapour may be condensed by cooling or may be absorbed in a non-aqueous solvent such as glacial acetic acid, and may be first washed with a small quantity of water.  When the aldehyde is to be oxidized to acetic acid, the vapour may be allowed to contain, say, 20 per cent of water, so that the solution in acetic acid contains about 10 per cent of water.  The oxidation of the alcohol may be effected at 200-500 DEG  C. in presence of suitable catalysts such as silver, copper, or their oxides.  The alcohol vapour may contain steam, for instance it may be made by vaporizing dilute alcohol containing more than 50 or 60 per cent of water.  Other diluents such as nitrogen may be employed. Specifications 389,134 and 389,135 are referred to.