baber/WOPTO huggingface dataset:
Patent GB-379426-A (GB)
Title: Improvements in or relating to wireless receiving apparatus and the like
IPC: H03D11/02
Filed: 1931-06-15
Abstract: 379,426. Valve circuits. CROYSDALE, J., 3. Carlton Drive, Gatley, Cheadle, and WRIGHT, S. R., 12, Lees Road, Bramhall, both in Cheshire. June 15, 1931, No. 17348. [Class 40 (v).] In a super-regenerative wireless receiver, the quenching oscillations are generated by reaction between the input electrode g of the receiving-valve V and an output electrode s additional to the electrodes p, g which provide the high-frequency reaction. The input electrode is connected to a signal-responsive circuit L. C, and the output electrode p to a signalreproducing, Fig. 1 (not shown), or amplifying apparatus V1. The high-frequency reaction is obtained by a coil L1 and the quenching reaction by coils L2, L3. The additional electrode is a grid of the kind used as a screening grid between the plate and control grid. A grid condenser C2 and leak r produce grid detection. According to a modification the functions of the plate p and grid s are reversed, Fig. 3 (not shown).
Patent GB-569544-A (GB)
Title: Improvements in and relating to circuit arrangements including interrupters or vibrators
IPC: H02M3/42
Filed: 1943-10-21
Abstract: 569,544. Converting. WEIGHT & WEAIRE, Ltd., and BUCKLEY, E. S. Oct. 21, 1943, No. 17353. [Class 38 (ii)] In a vibratory switch inverter in which current flow in the primary winding 8 of a transformer is controlled by contacts 4, 5, auxiliary contacts 6, 7 are connected as shown in the secondary circuit and are arranged so as to break the latter shortly before the primary circuit is broken at the contacts 4, 5 and to remake it shortly after the primary circuit is re-made at contacts 4, 5, but without producing rectification of the secondary current. Thus, the primary circuit is not made and broken under load. In a modification, the contacts 2, 3 on the vibratory element are insulated from each other so. as to isolate the primary from the secondary circuit..
Patent GB-677799-A (GB)
Title: Improvements in insulating walls or lagging
IPC: F22B37/00
Filed: 1950-07-12
Abstract: 677,799. Furnace walls. BOUELLAT, P. F. July 12, 1950 [July 19, 1949], No. 17416/50. Class 51 (i). [Also in Group XIII] A wall or layer of insulation is provided by the assembly of cylinders 2, Fig. 1, each formed by a cushion 8, Fig. 2, of insulating fibres such as glass wool bound together by wire 9 and supported by a cylindrical skeleton 7 of expanded metal. The deformable cylinders 2 may be applied to a furnace casing or positioned between outer and inner walls 3, 4 of the combustion chamber of a boiler, the inner wall being formed by tubes 5 with fins 6. The metal skeleton 7 shown in Fig. 2 is closed at its ends and covered by the cushion 8 but in a modification (Fig. 3, not shown), the cylinder is open at both ends.
Patent GB-1162784-A (GB)
Title: Organic Compounds based upon Pyridyl Benzopyrans and Intermediates and processes therefor
IPC: C07D405/04
Filed: 1968-04-11
Abstract: 1,162,784. Benzopyran derivatives. BEECHAM GROUP Ltd. 11 April, 1968 [14 April, 1967], No. 17469/68. Heading C2C. The invention comprises compounds of formulµ wherein R 1  is C 1-6  alkyl, and R 2  is C 1-20  alkyl or cycloalkyl (C 3 _ 8 )-alkyl (C 1-6 ). The coumarin, prepared by reacting methyl isonicotinylacetate with a 5-R 2 -resorcinol in presence of H 2 50 4 / POCl 3 , reacts with R 1 MgBr or R 1 MgI to give the chromanol (at about 100) or the chomenol (at about 50). Therapeutic compositions for oral or parenteral administration comprise the above compounds (excluding the coumarin), which possess central nervous system activity.
Patent GB-625362-A (GB)
Title: Improvements in or relating to drills and bits therefor
IPC: E21B10/44
Filed: 1947-07-04
Abstract: 625,362. Drills. GULLICK, Ltd., and SEAMAN, T. July 4, 1947, No. 17629. [Class 83 (iii)] A drill comprises at least two separate cutting tips or parts 13, 14, and one or more removable spacing- pieces 18 adapted for insertion between them, the cutting diameter of the drill being determined by the thickness or absence of the spacing-piece or pieces. The cutting tips 13, 14 and spacing pieces are held by a pin 17 in an elongated socket 16 in the drill-head 10. Depending upon the cutting diameter desired, the tips are used with a thick or thinner spacing piece or one or more additional spacing pieces, and for larger diameters a drill-head of larger diameter may be, used ; spacers could, when required, also be fitted outside the shanks of the drill bit. Cutting edges 20 are provided on the spacers 18. Specifications 592,086 and 592,087 are referred to.
Patent GB-1109865-A (GB)
Title: Novel phenethyl carbamates and a process for the manufacture thereof
IPC: C07D295/205
Filed: 1966-04-22
Abstract: The invention comprises compounds of formula <FORM:1109865/C2/1> wherein the broken line denotes an optional bond, R1 and R2 are each a halogen atom or a trifluoromethyl group, R3 is an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or aralkyl group, any of which may be substituted by alkyl, alkoxy, tertiary amino or halogen, and R4 is a group -CONR5R6 wherein each of R5 and R6 is a hydrogen atom or an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, hydroxyalkyl or pyridyl group or the group -NR5R6 forms a saturated 5- or 6-membered ring which may contain one further hetero-atom, and in which any of the groups R5 and R6 may be substituted by alkyl, alkoxy, aryl, tertiary amino or alkoxycarbonyl, and their preparation by either reaction of an epoxide of formula <FORM:1109865/C2/2> with an alcohol R3OH in the presence of an acid catalyst, or reducing a compound of formula <FORM:1109865/C2/3> or an ester thereof, with a complex metal hydride, followed in either case by conversion of the resulting phenethyl alcohol to a carbamate.  2,4-Dichloro-b -methoxy phenethyl chlorocarbonate is obtained by reaction of the corresponding alcohol with phosgene. 1-Epoxyethyl-2,4-dichloro-benzene is prepared by reaction of 1,3-dichlorobenzene with chloroacetyl chloride and aluminium chloride to give 2,21,41-trichloro-acetophenone, reducing this with sodium borohydride to the 2,4-dichlorophenylethylene chlorohydrin, and treating this with potassium hydroxide.  o-Chloro-a -O-methyl-mandelic acid is prepared by reaction of o-chloro benzaldehyde with sodium pyrosulphite, sodium cyanide and hydrochloric acid to give o-chloro mandelic acid, and treating this with dimethyl sulphate.  The compounds of the invention have anti-convulsant and muscle relaxant activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral, parenteral or rectal administration.
Patent GB-530098-A (GB)
Title: Improvements relating to electric discharge lamps and starting apparatus therefor
IPC: H05B41/10
Filed: 1939-06-16
Abstract: 530,098. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. June 16, 1939, No. 17663. Convention date, June 16, 1938. [Class 39 (i)] For starting a discharge lamp with filamentary cathodes arranged near the anodes for operation by alternating current, the current is passed through the cathodes and through a switch and a heat-responsive device controlling the latter which is then held open by a magnet connected between the anodes. The heat-responsive device may consist of a bimetallic grid 10 acting on the spring-controlled armature 18 of a magnet 23 through a screw 14 and to separate the contacts 16, 17. The magnet coil 24 is in parallel with the grid 10, and is of high impedance and low ohmic resistance. A condenser 28 forms with the coil 24 a circuit resonant with the operating current. If the lamp is extinguished the saturation of the magnet core destroys this resonance and allows the armature 18 to close the contacts 16, 17 under the action of the spring 20.
Patent GB-1528718-A (GB)
Title: Split cover plate for an electrical conductor outlet
IPC: H02G3/12
Filed: 1977-04-27
Abstract: 1528718 Cover plates J T THOMPSON 27 April 1977 [15 June 1976] 17668/77 Heading H2E A split cover plate for a telephone outlet comprises two overlapping plate forming members 12, each of which has a notch 20 for defining an opening 22 for a telephone cord, a tongue 24 received in a socket 28 in the other member and two screw holes 30, 32 which are aligned with the screw holes 32, 30 in the other member to enable the two members 12 to be joined together by screws. The plate forming members 12 are releasably locked together by detent means 34.
Patent GB-161875-A (GB)
Title: Improvements relating to pneumatic tyres
IPC: B60C19/12
Filed: 1920-06-29
Abstract: 161,875. Beaumont, J. H., (Flynn, S. J.). June 29, 1920. Jackets and covers.-A reinforcing layer of balls 4 of metal or other puncture-resisting material is inserted beneath the tread-surface 3 of a pneumatic tyre. Each ball 4 is provided with two recesses 5 in order that the balls may fit closely together, as shown in Fig. 4, to form a substantially continuous sheet, while allowing independent movement of the balls to provide flexibility.
Patent GB-977993-A (GB)
Title: Improvements in stationary electrical induction apparatus
IPC: H01F27/34
Filed: 1961-05-16
Abstract: 977,993. Transformers. GENERAL ELECTRIC CO. May 16, 1961 [May 18, 1960], No. 17779/61. Heading H1T. In an electromagnetic induction apparatus such as a transformer comprising a coil winding 70<SP>1</SP>(Fig. 5a) on a core limb 62<SP>1</SP>,additional insulation 78<SP>1</SP>is inserted between the adjacent laminations on the outside of the limb the faces of which are nearest to the coil or alternatively (Fig. 9 and Fig. 8 (not shown)) additional heavily insulated magnetic laminations 148, 150, 154, 156, which do not form part of the core proper, are inserted between a winding 142 and a limb 136, 138. The number of laminations between which the additional insulation is inserted may amount to 5% or more of the total number. In the case of a three-phase transformer having a core 82, 84, 86 (Fig. 6) formed from loops of magnetic strip, the extra insulation 110, 112 is arranged between the inner turns (laminations) of each inside core loop 82, 84 and between the outer turns of the surrounding core loop 86. In a three-phase transformer having a generally Y-shaped yoke, the extra insulation 130, 128 (Fig. 7) is disposed between the adjacent outer turns and between the adjacent inner turns of the core legs. The extra insulation may be of " Mylar " (Registered Trade Mark) film or sheet or it may be provided by increasing the magnesium silicate or oxide coating on the core laminations.
Patent GB-680311-A (GB)
Title: Improvements in or relating to apparatus for the measurement of peak strain
Inventor: JEFFERSON SIDNEY
IPC: G01M5/00
Filed: 1950-07-17
Abstract: 680,311. Electric indicating systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 6, 1951 [July 17, 1950], No. 17863/50. Class 40 (i). For measuring peak strain, a resistance strain element 1 is connected in a bridge circuit 2 fed from a voltage stabilized oscillator 3. The bridge output which varies in magnitude and phase sense according to the strain deviation from a datum is amplified at 4 and fed to a phase-sensitive detector 5 e.g. as disclosed in Specification 592,835, the reference phase of which is fed from the oscillator 3 through an adjustable phase shifter 6. The detector output is fed to peak rectifiers 7, 8, e.g. as disclosed in Specification 517,486, [Group XXXVI], which indicate respectively at 9, 10 positive and negative peak strain over a given test period. Average strain is also indicated by a meter 11 fed from the detector 5.
Patent GB-690567-A (GB)
Title: Improvements relating to pressure reducing valves
IPC: G05D16/10
Filed: 1950-07-17
Abstract: 690,567. Fluid-actuated valves. HOSKINS, S. W. July 10, 1951 [July 17, 1950], No. 17865/50. Class 135 A pressure-regulating valve includes a body member 1 with inlet and outlet passages 2a, 6a, respectively, a guide member 17 which forms part of one wall of an outlet chamber 3, a valve 14 in the inlet passage, a piston 22 slidable in the guide member so that one of its faces is subject to the pressure in the outlet chamber, a pressure-setting spring 44 urging the piston in the direction to open valve 14, means on the piston, e.g. tappet 10, to open valve 14 when the pressure in chamber 3 falls, a bleed passage between the two faces of the piston, and a relief valve 56 coaxial with valve 14 and closing-off the bleed passage but opening on the pressure in the chamber exceeding a predetermined value. Valve 14 is spring-pressed on to a seat member 11 which is held in position by a plug 9 screwed into a bore in the body and serving as a guide for the tappet 10. The guide member 17 is held in position by a cap 26, the latter being secured to the body by a nut 27, and leakage of fluid past the guide member is prevented by a rubber, etc. seal 21. A ring 24 of similar material prevents leakage past the piston. At its upper end, the spring 44 abuts against a nut which is threaded on a shaft 48 and the nut can be moved up and down to adjust the setting of the spring by rotating the shaft by means of a knob 37 carried on its outer end. A roller 50 carried bv the nut and engaged in a groove 49 in the cap 26 prevents the nut from rotating. A ball thrust bearing 32 is positioned between the upper end of cap 26 and a shoulder on the shaft 48. The relief valve 56 is spring-pressed on to its seat, which latter is held in the bleed passage through the piston by a guide member 53 for a tappet 63 lying between the valve 56 and an abutment rod 52 housed in the shaft 48. The position of rod 52 determines the pressure at which valve 56 will open, and this position is adjusted by means of a screw abutment 38 which can be adjusted from outside the top of cap 37. A wire-wound filter 4 is situated in the inlet passage and the interior of cap 26 is provided with an opening 49a leading to the sump. The inlet and outlet passages may be connected by a by-pass passage containing a spring-loaded hollow non- return valve.
Patent GB-1472945-A (GB)
Title: 3,3-dihalopropenyl esters of di and tricarboxylic acids and  their use as plasticizers
IPC: C08K5/11
Filed: 1974-04-24
Abstract: 1472945 3,3 - Dihalopropenyl esters of di-tricarboxylic acids MONTEDISON SpA 24 April 1974 [24 April 1973] 17911/74 Heading C2C [Also in Division C3]  The invention comprises compounds of Formula I wherein each X is a halogen atom and is the same as, or different from any other X, n is 2 or 3 and when n is 2, A is a radical of Formula II and when n is 3, A is a radical of Formula III wherein R<SP>1</SP> and R<SP>11</SP> are selected from optionally halogen substituted hydrocarbyl radicals which may be prepared by reacting an optionally halogen substituted di- or tribasic carboxylic acid with a compound of Formula IV or V where X is as defined above. 1,1,1,3 - Tetrachloropropane is prepared by reaction of ethylene and carbon tetrachloride under pressure in the presence of CuCl 2  and n-butylamine and is dehydrochlorinated at 140-150‹ C. to obtain 1,1,3-trichloropropene which is in turn reacted with potassium acetate and subsequently hydrolysed to obtain 3,3- dichloroprop-2-ene-1-ol. Plasticized polymeric compositions comprise a chlorovinyl polymer together with up to 150 p.b.w. of a compound of Formula I per 100 p.b.w. of said polymer and optionally comprise at least one further plasticizer or other known polymer additive.
Patent GB-118209-A (GB)
Title: Improved Means for Connecting Extra or Spare Wheel Rims to Wheels.
IPC: B60B11/10
Filed: 1917-12-04
Abstract: 118,209. Stepney Spare Motor Wheel, Ltd., and Davies, T. M. Dec. 4, 1917. Auxiliary-rim attachments to wheels. -Means for securing an auxiliary rim at the side of a pneumatic - tyred wheel consist of a split band a having inturned edges a<1> to clamp the adjacent flanges of the two rims and fitted with brackets b, and a bolt &c. c to adjust the band into, and out of, the operative position. In the form shown, each bracket comprises a tapered plate b<2> riveted &c. to the end of the band and a lug b passed through the slotted end thereof. In a modification, the brackets are shouldered to abut against the plain ends of the band. To position the rims, the band a is fitted at intervals with distance-pieces d. Mud &c. clearance holes c are provided in the band.
Patent GB-288864-A (GB)
Title: Improvements in lateral springing for vehicle running gears
IPC: B61F3/16
Filed: 1927-07-06
Abstract: 288,864. Stedefeld, C. July 6, 1927. Single-rail and suspended vehicles.-In lateral springing for vehicle axles, the unsprung masses, consisting at most of the angles, wheels and axleboxes, are held laterally with little or no play between yielding abutments, which, in the equilibrium position, are so pressed against fixed abutments by preloaded springs that lateral movement can only take place when side shocks, exceeding the spring load, occurs. In the axlebearing shown in Fig. 1, the inner races 12, 13 are spaced by a distance-piece 14 and are rigidly secured to the axle. The outer races 15, 16, at their outer edges, abut fixed projections on the axle-box and can) only move toward one another by compressing a preloaded spring 17 ; lateral movement of the axle to the left compresses the spring as shown in the lower half of Fig. 1. In Fig. 2 the axle-box is shown adapted to move with the axle, the preloaded springs 26 being enclosed in housings 27 situated between fixed abutments on the axle-box and plate 25 on the hornplates. Lateral movement of the axle to the left compresses the springs 26 as shown in the righthand side of Fig. 2; rollers are interposed between the top of the axle-box and the bearing- springs. As applied to suspended running gears, Figs. 7 and 8, the preloaded spring 35 comprises two leaf springs mounted on the carriage 33 by a pivot 36, the ends of the springs abutting fixed projections 38 on the carriage. The wheels 18 are mounted on arms 31 slidably pivoted on bolts 39 and the carriage is suspended on leaf springs 34 pivoted to the arms by links. Each wheel mounting is provided with fixed abutments 28 between which the ends of the springs 35 project. Lateral movement to the right of the left-hand wheel in Fig. 8 causes a projection 28 to compress one of the leaf springs 35 and move it away from its fixed abutment 38 on the carriage. The pivoting movement of the springs brings the opposite end of the other spring away from its abutment and. allows the right-hand wheel to move to the left. In a modification a V-shaped leaf spring is mounted, between fixed abutments, in each arm 31, the ends of the spring projecting between fixed abutments on a slidable axle-bearing. For tramway vehicles the spring system 35, Fig. 8, can be replaced by a two-armed lever with a pivot at the centre and a laminated spring at each end.
Patent GB-202286-A (GB)
Title: Improvements in covers for steering wheels
IPC: B62D1/06
Filed: 1923-07-11
Abstract: 202,286. Ridge, W. F. Aug. 12, 1922, [Convention date]. Hand-wheels.-A cover or grip to be applied to the rim of an automobile steering-wheel is made of rubber or rubber-like composition in the form of a hollow ring 3 having on the inner side a circumferential slit 4, the ring being initially of smaller diameter than the rim, so that it is secured by its elasticity alone, and the edges of the slit being provided with beads 6 to assist in drawing the cover on to the rim. The ring may be somewhat thickened towards its outer surface 5, which may be roughened to improve the grip.
Patent GB-567313-A (GB)
Title: Improvements relating to roller bearings
IPC: B21K1/04
Filed: 1943-11-01
Abstract: 567,313. Forging - dies. BROCKHOUSE & CO., Ltd., J., and HODSON, G. Nov. 1, 1943, No. 17992. [Classes 83 (ii) and 83 (iv)] Making rings.-In the manufacture of the outer race ring for a tapered roller bearing, the lower forging-die 5 is provided with a recess 17 to receive the metal trapped below the flat end 16 of the spigot 14 on the upper die. A smaller connection remains between this metal and the main body 10 of the forging and the metal can be punched out without leaving any shoulder at the end of the tapered surface. The surface 16 is substantially in the same plane as the surface 8 and the machining allowance 21 permits the whole of the cylindrical surface 20, formed by punching, to be removed.
Patent GB-986561-A (GB)
Title: A process for decomposing zircon sand
IPC: C01G25/02
Filed: 1963-05-07
Abstract: Zircon sand is decomposed by reaction with at least one mol., preferably 1.5 to 4 mols., of one or more alkali metal oxides per mol. of zircon sand.  The reaction is initiated by heating to the igniting temperature, i.e. 100 DEG  to 300 DEG  C., and the mixture is allowed to react exothermically.  After cooling, the mixture is worked up, preferably by suspension in softened, calcium-free, water, so that the soluble constituents are removed, and the solid zirconium hydroxide may be purified by acid-treatment, and then dried. Further, the hydroxide may be dissolved in mineral acid of concentration exceeding 10% and zirconium hydroxide or basic zirconium sulphate, each of which may be converted to the anhydrous oxide by heating, is precipitated by the addition of ammonia.  When 1 to 2 mols. of alkali metal oxide are used per mol. of zircon sand, a mixture of zirconium hydroxide, sodium-zirconium silicate and unreacted zircon sand is obtained. This mixture, preferably after extraction with water, may be treated with ammonium sulphate at about 850 DEG  C. to give a mixture of sodium sulphate, zirconium oxide and silica.  The sodium sulphate may be removed by extraction with water to give a zirconium oxide-silica mixture, which may be used for the production of colours in ceramics.
Patent GB-298267-A (GB)
Title: Improvements in or relating to electro-magnets
IPC: H01F7/20
Filed: 1927-07-07
Abstract: 298,267. Rance, H. E. July 7, 1927. Electromagnets.-In an electromagnet of the type comprising two concentric pole-pieces having an exciting winding between the pole-pieces and another surrounding the outer pole-piece, the polepieces are mounted on a ring - shaped permanent magnet. Fig. 1 shows such an arrangement applied to a telephone receiver. The inner pole-piece a and the outer b are mounted on connecting-pieces a<1>, b<1> secured to the ring-shaped permanent magnet e. The pole-pieces may be further connected magnetically at their base, for example by stamping the outer pole-piece out of sheet iron and bending the end over to form a disc engaging with the base of the inner pole-piece. The outer pole-piece mav approach the inner pole-piece at its upper end, either by being given a conical form, or being formed with a shoulder as shown in Fig. 6, the outer winding being arranged on the shoulder as shown.
Patent GB-121628-A (GB)
Title: Improvements in and relating to Projectiles.
Inventor: GILMARTIN MICHAEL WILLIAM
IPC: F42B12/64
Filed: 1916-04-12
Abstract: 121,628. Gilmartin, M. W. April 12, 1916. Projectiles comprise a body A having a separate base C secured by heavy screw-threads, an annular flange 17 fitting into a tapered annular channel in the base, a driving-band 20 secured to the base by a heavy screw - thread and clamped between the body and the base, and means whereby the driving-band is adapted to be expanded against the bore of the gun by the pressure of the propellant gases. The screw-thread securing the band 20 is arranged reversely to the interengaging threads on the body and base. In the construction shown, the driving-band has a thin rear edge 25 partly overlapping a channel 18 in the base, to allow the gun-gases to expand the band as stated. The application of the invention to a shrapnel shell constructed as described in Specification 105,587 is shown.