baber/WOPTO huggingface dataset:
Patent GB-741720-A (GB)
Title: Improvements in aeroplanes
Inventor: WALLIS BARNES NEVILLE
IPC: B64C17/00
Filed: 1949-06-01
Abstract: 741,720. Aircraft wings with variable sweepback. VICKERS-ARMSTRONGS, Ltd. April 24, 1950 [June 1, 1949], No. 14694/49. Drawings to Specification. Class 4. The wings of an aerodyne are so mounted that they may be moved to vary the dihedral angle for the purpose of longitudinal trim according to change of speed, by producing a positive pitching moment due to wind drag such that, in conditions of stable equilibrium, the resultant of this moment, of the pitching moment produced by the body, and of the negative pitching moment produced by wing lift, is zero. The wings may be pivotally mounted on inclined axes, as in Specification 741,717, so that the sweep-back and dihedral angles are varied in a single movement. Specification 595,464 also is referred to.
Patent GB-236036-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41F3/86
Filed: 1924-06-18
Abstract: 236,036. Barker, R. W., (American Bank Note Co.). June 18, 1924. Cylinder machines; number-printing apparatus.-Relates to machines for printing identifying numbers and signatures &c. on previously printed bank notes &c. of the type comprising an impression cylinder 17 co-operating with a printing- plate 12 mounted on a reciprocating bed 11 and a number-printing cylinder 14 of half the diameter of the cylinder 17 and geared thereto, double inking being effected of both printing- members. A single positively actuated device consisting, as shown, of a disc 27 is provided for controlling strikers 21 which actuate numbering- heads 15 on the cylinder 14, the strikers being automatically thrown into and out of operation by mechanism adapted to be disengaged from the disc and manually thrown into permanently inoperative position after the disc is released. Sheets provided with a series of impressions are fed into grippers 18 on the cylinder 17, which is provided with a blanket extending approximately half-way round it. The strikers 21 are mounted on a shaft 20 having an arm carrying a stud 25 riding in a slot 26 in the disc 27. The disc is oscillated to control the strikers 21 by a rod 30 reciprocated by a cam 33 on the shaft 32 of the cylinder 17 and provided with a recess to receive a pin 29 on the disc 27. The rod 30 is disengaged from the disc by means of a pull-rod 41 connected to the rod and to a spring-pressed lever 39 controlled from a pedal 47, a bayonet slot 37 in the end of the rod 30 co-operating with a fixed pin 38 to allow the rod 41 to fall only when the disc 27 is so situated that the strikers 21 are inoperative. For manual operation the disc 27 is provided with a handle 51. The cylinder 14 is mounted in eccentric bearings 52 so as to be tripped from the cylinder 17 when inking up.
Patent GB-1396309-A (GB)
Title: Electrical machines
IPC: H01R39/26
Filed: 1971-05-13
Abstract: 1396309 Automatic control of temperature and force INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 7 Aug 1972 [13 May 1971] 14757/71 Heading G3R [Also in Division H2] In a brushgear arrangement in a dynamoelectric machine, a motor 25 drives a jacking screw 22 via gearing 24 to advance a fibre brush 20 [Division H2] against a rotating slip-ring 21 as the brush wears away in use thereof, the motor being driven by a relay unit 26 and control circuit 30 in accordance with the temperature of the brush as sensed by a thermocouple 29. In an over-riding arrangement for controlling the relay unit 26, the brush 20 and an auxiliary, solid type, brush 27 running on an unused part of the slip-ring are both connected to a voltage control unit 28 whereby to sense the contact potential of the main brush 20, and to ensure that it does not go outside permitted limits. The brush position may also be controlled by sensing the contact pressure or contact friction (no details provided).
Patent GB-1267291-A (GB)
Title: Sewing machine with pneumatic needle threader mechanism
IPC: D05B87/00
Filed: 1970-03-26
Abstract: 1,267,291. Sewing-machine, needle threader. SINGER CO. 26 March, 1970 [1 April, 1969], No. 14765/70. Heading D1G. A sewing machine having a needle bar with needle 43 and a presser bar 19 raisable by lifting means (35 or 42) (Figs. 3 and 7 not shown) has a vacuum operated needle threader and thread wiper 106 pivoted for movement from a retracted position, as shown in Fig. 8 to an operative position, Fig. 12, when the presser bar is moved from a lowered to a raised position. As shown the threader 106 is carried at one end of a spindle 101 pivoted to a member 93 clamped to the presser bar bushing, the other end carrying a lever presenting a cam portion 111 to the presser foot clamp screw 114. When the presser bar is raised the screw cams the lever to move the threader to the position shown in Fig. 12, a thread placed at flange 119 being drawn by vacuum through the eye 43 of the needle. Alternatively, the cut end of a needle thread already through the eye is drawn into the tube 106 to perform the thread wiping action. In another embodiment (Fig. 3 not shown) the spindle (65) to which the threader tube (39) is secured is pivoted by linkage (44, 48, 53, 56, 57) connected to the presser bar lifting lever (23). In this embodiment the threader tube is provided with an adaptor (88, Figs. 5 and 6 not shown) presenting a V-groove (90) which engages the needle to align the threader passage with the needle eye.
Patent GB-612037-A (GB)
Title: Improvements in and relating to gauge apparatus for indicating the dimensions of tiles and similar articles
IPC: G01B5/00
Filed: 1946-05-16
Abstract: 612,037. Linear-dimension gauges. BRAYWOOD ENGINEERING CO., Ltd., and HOLLOWOOD, R. R. May 16, 1946, No. 14768. [Class 106 (ii)] Gauging apparatus for indicating the dimensions of tiles has a contact member actuated by the tile being measured, thus completing an electric circuit which enables indicating means to be operated, the selection of the particular indicating means being governed by another contact member moving over a series of contacts and operated by the movement of one of the gauge members caused by the tile being measured. The gauge comprises a fixed straight edge 13 and a roller 15 carried on bearings 16 at one end of a pivoted lever 17. A second straight edge 14 may be inserted to allow smaller articles to be measured. The other end of the lever 17 co-operates with a series of contact studs 22, each of which is wired to a separate bulb 24 visible through inspection windows 25. A spring plunger. 26, when pressed down by the article to be measured, completes the electric circuit of the bulbs 24.
Patent GB-1262123-A (GB)
Title: Improvements in or relating to pesticides
IPC: A01N25/10
Filed: 1969-03-20
Abstract: 1,262,123. Pesticides bonded to carriers. MINNESOTA MINING & MFG. CO. 20 March, 1969 [21 March, 1968], No. 14778/69. Heading A5E. [Also in Division Cl] A pesticidal composition for use in water for combating undesirable plants or animals therein, contains a biocidal ionic toxicant bonded by reversible ion-exchange to the surface of a water-insoluble, particulate, inert carrier, whereby the composition when dispersed in water is confined to local areas and the biocidal substance is desorbed by ionexchange to provide localized concentrations biocide. Specified toxicants are endothal, 2,4-D, silvex, TCA, dalapon, picloram, arsenites, diquat, paraquat, cupric compounds, antimycin A, pentachlorophenol, amitrole, 2,4,5-T, 3-trifluoromethyl-4-nitrophenol; 3'-chloro-3-nitrosalicylanilide; 2',5-dichloro-4'-nitrosalicylanilide; and N,N-dimethylcocoamine. Carriers which can be modified (e.g. coated) to provide ion-exchange properties are hydrobiotite, vermiculite, sand, talc, kaolin, titanium dioxide, clays, bentonite, mica, light SiO 2 , glass microspheres, perlite, and Al(OH) 3  modified clays, micas and vermiculites. Ion-exchange materials specified are aluminium, magnesium, zinc, ferric and copper hydroxides, the basic salts of calcium and barium, and cross-linked polymeric quaternized polyvinyl pyridines and aminostyrenes. Optional composition ingredients are dyestuffs, binders, herbicides, and coatings to delay release of toxicant (examples 6 and 7). In use, expiration of CO 2  by plants and/or the pH of the aqueous medium aid(s) in release of toxicant by ion-exchange. The biocidal effect, however, is localized and the rest of the aquatic environment is uncontaminated.
Patent GB-820524-A (GB)
Title: Improvements in resetting magnetic cores
Inventor: SIMS JOHN CLARK
IPC: G11C11/06
Filed: 1957-05-09
Abstract: 820,524. Non-linear inductors. SPERRY RAND CORPORATION. May 9, 1957, No. 14783/57. Class 40 (9). A pulse or pulses delivered to winding 13 of transformer 14 leaves the core in a remanent state different from that in which the core was found and over a loop 18, 19, the same happens to a core 20, which by being driven back to its initial remanent state by winding 21 similarly restores the core of transformer 14. The pulses applied to transformer 14 come from a source F over a gate 11 and amplifier 12 and energize a load 16. The gate 11 is opened periodically by a clock source 17 which also periodically and while 11 is shut drives core 20 to saturation to reset the transformer 14. Whereas the core 20 is preferably of a material with a rectangular hysteresis loop the transformer core is preferably of silicon steel.
Patent GB-730123-A (GB)
Title: Improved method of fabricating semi-conductive devices
IPC: C01C3/00
Filed: 1953-05-27
Abstract: 730,123. Semi-conductor devices. RADIO CORPORATION OF AMERICA. May 27, 1953 [June 2, 1952; June 20, 1952], No. 14822/53. Class 37. [Also in Group II] A semi-conductor device comprising a PN junction formed by alloying and diffusing an impurity material into the semi-conductor, has the exposed surfaces of both conductivity regions etched, to expose the edges of the junction. Fig. 2 shows a junction transistor produced by placing discs 13, 15 of indium or other acceptor material on to the etched surface of a wafer 11 of N-type germanium and heating to about 500‹ C. in dry hydrogen to alloy and diffuse the indium into the germanium. This forms the collector and emitter electrodes, and a nickel tab 20 fixed to the end of the wafer forms the base electrode. The unit is then etched in a solution of hydrofluoric acid, nitric acid and distilled water, which removes excess indium from the areas where the PN junctions 25, 27 meet the surface. To control the area and position of the impurity material 13 and 15, a metal such as gold, copper, silver, or nickel may be thinly plated on the desired area of the germanium surface, and the indium or other material then placed on this plated surface. A first heat treatment at about 450 ‹ C. alloys the indium with the gold or other metal, an etching treatment is applied, and then a second heat treatment at about 500‹ C. in an oxygen-free atmosphere diffuses the indium into the germanium to provide the PN junction. A second etching treatment removes any material bridging the exposed edges of the PN junction. The invention may be applied to rectifiers or other semi-conductor devices, and the unit may be encased in plastic or resin material.
Patent GB-1166399-A (GB)
Title: Production of Organomagnesium Compounds and Derivatives Thereof
Inventor: RAMSDEN HUGH EDWIN
IPC: C07F3/02
Filed: 1967-03-31
Abstract: 1,166,399. Terpenes. ESSO RESEARCH & ENG. CO. 31 March, 1967, No. 14918/67. Heading C5E. [Also in Division C2] Terpene hydrocarbons are obtained from organo-magnesium compounds (R<SP>1</SP> ) n Mg, where n is 2-8 and each R<SP>1</SP> is a C 4-40  conjugated diolefin optionally containing one or more further double bonds, by hydrolysis with a compound containing active hydrogen, e.g. water, mineral acid, an organic acid, a phenol or an amine. The products have a greater molecular weight than the diolefins R<SP>1</SP>, typical of which are butadiene, isoprene, myrcene, alpha-phellandrene and alloocimene. In examples, terpenes are produced from compounds in which R<SP>1</SP> is isoprene or myrcene.
Patent GB-945681-A (GB)
Title: Improvements relating to dynamo-electric machines
Inventor: VICKERS VALENTINE JOHN
IPC: H02K1/18
Filed: 1959-05-01
Abstract: 945,681. Supporting turbo-alternator cores. ENGLISH ELECTRIC CO. Ltd. April 28, 1960 [May 1, 1959], No. 14940/59. Addition to 821,612. Heading H2A. In the present invention the core support bars 12 claimed in Claim 1 of the parent Specification are each formed from rigidly secured together inner and outer bar members 12b, 12a and the tangential slots are formed by grooves 15 in the opposing faces of either or both members. As shown the two members are welded together and may be of different materials.
Patent GB-456455-A (GB)
Title: Improvements in and relating to electric water heaters
IPC: F24H1/10
Filed: 1935-05-22
Abstract: 456,455. Electric immersion heaters. BERRY, H. H., 85, Newman Street, Oxford Street, London. May 22, 1935, No. 14955. [Class 39 (iii)] The heating wire is arranged in longitudinal passages 6 in curved refractory segments 5 arranged end to end in two or more sheaths lying around a cylindrical space with their longitudinal edges spaced apart to form slots 18. The slots may be closed over part of their length by metal strips or heat insulated metal ends. The sheaths are screw threaded at the top to receive a thermostat and to enable the heater to be mounted vertically in a tank. Each row of segments 5 is held to the terminal block 4 by a strap passing around the segments and secured at its ends by screws 13.
Patent GB-750393-A (GB)
Title: Improvements in or relating to control means for power-assisted steering mechanism
Inventor: EDGE STANLEY HOWARD
IPC: B62D5/08
Filed: 1951-06-25
Abstract: 750,393. Fluid-pressure servo motor-control systems. CLAYTON, DEWANDRE CO., Ltd. June 12, 1952 [June 25, 1951], No. 15041/51. Class 135. Control means for power-assisted steering gear for motor vehicles, comprises hub members 1, 2, Fig. 2, capable of limited, relative angular movement, the outer hub 1 being connected to the steering-wheel spokes 3 and the inner hub to the steering shaft and having a web 2a, Fig. 3, which supports control valve mechanism for the power system. The mechanism comprises a body 9 with a valve 12 having negative lap and controlling the pressure from an inlet 14 in passages 15, 15a leading to valves 11, 11a, respectively, which control outlets to a passage 18 and exhaust port 19. Passages 15, 15a also communicate via ports 22, 22a with opposite sides of a double-acting or twin single acting power cylinders, which move the road wheels. Levers 7 pivoted to the web 2a each have three arms, 7a passing through hub 2 with clearance 8 and connected to hub 1, 7b in contact with valve 12, and 7c in contact with valve 11 or 11a. Valves 11, 11a are opened by springs 21 which must be overcome before power-assistance is applied. Thus on relative movement between the hubs, levers 7 are pivoted to move the valve 12 to reduce the flow to one and increase flow to the other of passages 15, 15a and to move valve 11, 11a, of the passage having the increased flow, towards closed position, whereby the pressure in that passage rises and causes movement of the power device. This rotates the steering column shaft and hence the web 2a to cause pivotal movement of levers 7 about their connections to hub 1 to thereby move the valve mechanism back towards its normal or neutral position. The pressure in passage 15 or 15a acts on annular area 23 of its associated valve to react back on the steering wheel so that the power assistance is directly proportional to the turning moment on the wheel. A distributer connects external pipes with the valve mechanism and comprises an inner body 24 fixed to web 2a and the steering shaft, and rotatable in a housing 25 secured to the casing surrounding the shaft.
Patent GB-594495-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H50/56
Filed: 1945-06-14
Abstract: 594,495. Electromagnetic relays. TENCH, F. (Automatic Electric Laboratories, Inc.) June 14, 1945, No. 15060. [Class 38(v)] The armature 15 of a relay has a pivot pin 20 which is clamped between a plate 18 and a plate 19 with a groove 21 when the contact-spring-pile up unit 25 is screwed to the heel piece 14. The pile up unit is clamped between plates 19 and 30 by a screw 31 and is then screwed to the heel piece 14 by screws 32 which pass through elongated slots in the plates 18, 19 to allow bodily adjustment of the armature and pile up. The armature has an arm 17, the end 17a of which bears against a restoring spring 29. In the unattracted position of the armature, the spring 29 presses the arm 17a against a stud 22 and tilts it slightly to take up any play in the pivot of the armature and so prevent wear when the relay is subject to vibration. In the form shown, the armature when attracted moves the spring 29 so as to operate a movable contact spring 27 and bring two contacts on this out of engagement with two contacts on a spring 28 and into engagement with two contacts on a spring 26. The contacts are mounted on spring arms as shown, the arrangement providing for a wiping action and for self alignment. In a modification, Figs. 5, 6 (not shown) the armature has two arms 17, one on each side, which respectively operate two contact spring sets. Specification 594,510 is referred to.
Patent GB-1455644-A (GB)
Title: Electrode arrangement for an electrophoretical separation  performed in a gel plate
IPC: C25B9/00
Filed: 1974-04-05
Abstract: 1455644 Elctrode for gel electro-phoresis LKB-PRODUKTER A B 5 April 1974 [13 April 1973] 15188/74 Heading C7B An electrode arrangement useful in gel electrophoretic separations comprises a plate 1 used as a lid over the gel 11, the plate having at least one pair of parallel spaced-apart rows of teeth or projections 2, 3 along each of which extends an electrode 4 comprising a thread or wire of an inert conductive material e.g. platina. The projections, which may be triangular prisms, are pressed into contact with the gel or a porous buffer-impregnated material, e.g. filter paper 10, lying on the gel. When a plurality of pairs of rows is present, at least one pair may be at right angles to the others Fig. 4, (not shown). The arrangement allows ready release of electrolytically generated H 2  and O 2  while ensuring exact parallelism of the electrodes.
Patent GB-698835-A (GB)
Title: An improved check strap for vehicle doors and like closure members
Inventor: MORPHEW LAURENCE RICHARD
IPC: E05C17/32
Filed: 1951-06-27
Abstract: 698,835. Stays for hinged articles. PRESSED STEEL CO., Ltd. June 18, 1952 [June 27, 1951 ], No. 15211/51. Class 65 (ij In a stay comprising arms 14, 16 pivoted together at 15 and at their respective outer ends to a bracket 13 secured to the door post 11 and at 17 to the door 12, a permanent magnet 20 is fixed to the arm 16. The arrangement is such that the magnet turns as the door opens until the arms are nearly aligned, when it bears against and holds to the inner panel of the door, or to a steel plate secured thereto. The magnet may be adapted to suit different kinds of doors.
Patent GB-787358-A (GB)
Title: Preparation of cation-exchange resins
IPC: B01J39/20
Filed: 1955-05-26
Abstract: Insoluble cross-linked copolymers of a ketone of the formula:-<FORM:0787358/IV (a)/1> in which R1 is a hydrogen atom or a methyl group and R a monovalent hydrocarbon radical and a cross-linking monomer containing a plurality of vinylidene groups, which contains groups of the formula: <FORM:0787358/IV (a)/2> are made by after-treating a copolymer of the ketone and cross-linking monomer, with phosphorus trichloride and acetic acid and hydrolyzing the resulting product.  The radical R may be methyl, ethyl, isopropyl, n-butyl, sec.-butyl, tert.-butyl, iso-butyl, n-octyl, 2-ethylhexyl, cyclohexyl, phenyl, benzyl, tolyl, or phenethyl.  The cross-linking monomer may be divinyl benzene, toluene, naphthalene, ethylbenzene, xylene, or ether, ethylene glycol diacrylate or dimethacrylate, or diallyl maleate. The copolymer may contain units of other monomers such alkyl esters of acrylic or methacrylic acid, styrene, vinyl toluene, vinyl acetate or propionate, vinyl chloride or bromide, vinylidene chloride or bromide, and diallyl phthalate. Prior to the aftertreatment the copolymer is preferably swollen with an organic liquid such as ethylene dichloride or toluene.  The aftertreatment may be effected in glacial acetic acid alone, but it is preferred also to employ an organic liquid such as ethylene dichloride, carbon tetrachloride, benzene, toluene, or xylene. The resins are used as cation-exchangers.
Patent GB-1219872-A (GB)
Title: Improvements in or relating to electro-magnetic radiators
IPC: H01Q13/06
Filed: 1969-03-24
Abstract: 1,219,872. Aerials. CO. EL. COMPLEMENTI ELETTRONICI S.p.A. 24 March, 1969 [6 April, 1968], No. 15254/69. Heading H4A. A device for use with a horn radiator 10, in order to improve the distribution of energy over the surface of an associated reflector, comprises a plane-faced member having a radiating aperture 18 therein which is fed by a waveguide 11 and which is surrounded by a plurality of radiation limiters 19. The limiters consist of coaxial annular recesses 20, 20<SP>1</SP>, 20<SP>11</SP> &c. having open apertures, which are coplanar with the aperture 18, and defining baffles 21, 21<SP>1</SP>, 21<SP>11</SP> &c. The recesses are #/4 deep (# = mean operating wavelength), and are closed at their ends remote from the aperture 18. The radial thicknesses of the recesses are made such that their characteristic impedances do not decrease outwardly from the central axis of the horn, and so that the characteristic impedance of the outermost limiter is greater than that of the innermost limiter. The waveguide 11 may be fed from two cross-polarized sources, for the simultaneous transmission of two decoupled waves (Fig. 2, not shown).