baber/WOPTO huggingface dataset:
Patent GB-1517647-A (GB)
Title: Solvents
IPC: B41M5/165
Filed: 1976-06-16
Abstract: 1517647 Solvent MONSANTO EUROPE SA (P J ALLART AND H A VODDEN) 2 June 1977 [16 June 1976] 24972/76 Heading C4A A solvent for chromogens in carbonless copying paper comprises a mixture of a hydrogenated terphenyl and not more than 15 weight per cent of aromatic ether, e.g. phenyl benzyl ether.
Patent GB-223914-A (GB)
Title: Improvements in and relating to rotary compressors
IPC: F04D29/46
Filed: 1924-10-21
Abstract: 223,914. Akt.-Ges. Brown, Boveri, et Cie. Oct. 27, 1923, [Convention date]. Regulating or controlling; casings.-Springs are employed to prevent chattering of diffuser blades in rotary compressors. The spring may be a strip spring or, as shown in Fig. 2, a spiral spring c pressing on the lever f of the blade a, the root of which is held in a ball bearing d. In another modification the part e of the controlling rings acts resiliently on the blade lever f. In another modification a stretched band is arranged round the ring and under pegs on the blade levers.
Patent GB-960117-A (GB)
Title: Mounting stud for engagement in an aperture in a support
IPC: F16B12/42
Filed: 1961-07-11
Abstract: 960,117. Bolts. UNITED-CARR FASTENER CORPORATION. July 11, 1961 [July 22, 1960], No. 25096/61. Heading F2H. A bolted installation comprises a support 1 and a tubular fastener 3 the head 5 of which is expanded in an aperture 4 in the support, the shank of the fastener having screw threads 6. The bolt 3 is fixed to the tubular support 1 from the outside of the support and has a location shoulder 11. A nut 10 fixes a member 2 on the bolt. As applied to fixing a bracket 16 to a lamp-stand 14 through which a cable 15 passes, Fig. 8, the fastener has internal threads 13 engaging the threaded end of the stand.
Patent GB-647692-A (GB)
Title: Improvements in or relating to electric motors
Inventor: MASON FREDERICK PERCIVAL
IPC: H02P7/06
Filed: 1948-09-27
Abstract: 647,692. Automatic speed control systems. CREED & CO., Ltd. Sept. 27, 1948, No. 25135. [Class 38 (iv)] In a series-wound commutator type electric motor adapted to be speed-controlled by centrifugally-operated contacts 3 in the power supply to the motor, an arc-prevention device is provided which comprises a potential dividing network 4, 5 connected across the field windings 1 and armature 2. Upon an opening of the contacts 3 the field shunting circuit 4 prevents the induction of large potentials in the field windings 1 by limiting the rate at which the field magnetic flux falls. Also the flux is prevented from falling to zero owing to the path via field windings 1, conductor 8, and resistance 5.
Patent GB-584478-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L9/04
Filed: 1944-12-19
Abstract: 584,478. Vacuum cleaners. EUREKA VACUUM CLEANER CO. Dec. 19, 1944, No. 25470. Convention date, Dec. 22, 1943. Drawings to Specification. [Class 8 (i)] [Also in Group XXIII] The rotary agitator of a vacuum cleaner is provided with a set of stiff bristles which beat and agitate the carpet lifted by the suction, and a set of more flexible bristles which sweep the carpet without moving it from the lifted position. The more flexible bristles may be initially longer than the others. The height of the agitator may be adjusted to compensate for wear by rotation 'of a cam against which the agitator bearings are held by the tension of the driving belt.
Patent GB-441788-A (GB)
Title: The preparation of a new barbituric acid and salts thereof
Filed: 1934-09-04
Abstract: C-Ethyl-C<1>-2 : 4 - dimethylpentyl - barbituric acid is prepared by treating a 2 : 4-dimethylpentyl-ethyl-malonic ester or halide with urea, or by hydrolyzing the reaction product of a 2 : 4-dimethylpentyl-ethyl-cyanacetic ester with urea.  The acid may be converted into its alkali metal, ammonium and amine salts. Examples of each method of preparing the acid are given and the production of the sodium, potassium, lithium, ammonium, mono- and di-methylamine and mono- and di-ethylamine salts is described. Specifications 364,041 and 365,135 are referred to.  Malonic esters and halides; cyanacetic esters.--2 : 4 - Dimethylpentyl - ethyl - malonic ethyl ester is obtained by the interaction of ethyl diethyl malonate with a 2 : 4-dimethylpentyl halide or the p-toluenesulphonate in the presence of sodium alcoholate.  2 : 4 - Dimethylpentyl - ethyl - malonyl chloride is prepared by hydrolyzing the corresponding malonic ester and heating the resulting acid with thionyl chloride.  The 2 : 4 - dimethylpentyl - ethylcyanacetic ethyl ester is obtained from ethyl ethylcyanacetate by the same treatment as the malonic ester.  2 : 4 - Dimethylpentanol is prepared by the hydrogenation under pressure of isobutylmethyl-malonic ester in the presence of nickel catalysts.  Its p-toluenesulphonate results from treatment with the sulphonyl chloride.  2 : 4 - Dimethylpentyl halides are prepared from 2 : 4-dimethylpentanol by treatment with thionyl chloride, or with sodium bromide, water and sulphuric acid, or with iodine and red phosphorus.
Patent GB-1411024-A (GB)
Title: Method of fabricating porous cermets containing a fissile material
IPC: G21C3/64
Filed: 1973-05-29
Abstract: 1411024 Nuclear fuel COMMISSARIAT A L'ENERGIE ATOMIQUE 29 May 1973 [5 June 1972] 25501/73 Heading G6C A porous cermet for use as nuclear fuel is made by coating granules of a fissile material, such as uranium oxide or plutonium oxide, successively with a pore-producing substance and a metal powder, and sintering the product. In one embodiment, a UO 2 -Mo cermet is made by coating UO 2  granules with MoO 3  powder mixed with a solution of paraffin in ether, and then with Mo powder; the paraffin is removed and the granules compacted into pellets, sintered at 1600‹ C. in hydrogen, and annealed at 2000‹ C. The paraffin may be replaced by stearic acid or acrylic resin. In another process, a UO 2 -W cermet is made by coating chips of compacted UO 2  powder with a solution of stearic acid or ammonium behenate in ether, drying, mixing with W powder, compacting, and sintering. Other metals referred to are Fe, Ni, Nb, and stainless steel. Other processes are described in which the coated particles are sintered without compacting into pellets and are enclosed in a can to form a fuel element. Oxides of W, Fe, Ni, or Nb may be used in place of MoO 3 . Reference is also made to using carbide or nitride fuel particles in place of oxide particles.
Patent GB-223938-A (GB)
Title: Improvements in vacuum tube circuits
IPC: H01J21/20
Filed: 1924-10-27
Abstract: 223,938. British Thomson-Houston Co., Ltd., (Assignees of Carpenter, G. W.). Oct. 27, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermionic amplifiers, detectors, generators, and modulating apparatus.-A system for detecting, amplifying, or producing oscillatory or pulsating currents comprises a thermionic valve with a single filament and two or more grid and plate electrodes which are so connected as to provide two or more stages of amplification &c. in cascade. As shown in Fig. 1, the input oscillations are applied across the grid G<1> and filament F, and rectified current in the plate circuit passes through the primary coil P of a transformer having its secondary S connected across the grid G<2> and filament F. The amplified low-frequency current passes through the telephones in the plate circuit of the second stage. Three or more such stages of rectification and high or low-frequency amplification may be provided, with transformer, or resistance-capacity coupling between the stages, the grids being spaced at equal angular distances around a central filament, and a plate co-operating with each grid. In a modification shown in Fig. 3, applied to radio transmission, the first stage comprises an oscillation generator having an electromagnetic coupling T<1> between its grid and plate circuits. The plate circuit also comprises a tuned circuit CP coupled to the grid circuit of the second stage, which has its plate circuit direct-coupled to the aerial Q. For radiotelephony, a microphone M is connected in the primary circuit of a transformer T<3>, the secondary being connected across the grid G<1> and filament F of the first stage. A signalling kev K isinserted in the secondary circuit.
Patent GB-421912-A (GB)
Title: Improvements in or relating to polishing, abrading and like devices
IPC: B24D9/00
Filed: 1933-09-15
Abstract: 421,912. Abrading, polishing, &c. tools. BOSCH AKT.-GES., R., 4, Militarstrasse, Stuttgart, Germany. Sept. 15, 1933, No. 25560. Convention date, Sept. 17, 1932. [Classes 19 and 60] An abrading, polishing, &c., tool consists of an elastic body b, for example of rubber, secured to a spindle a over which is pushed a cap c, closed at its outer end and having on its outer surface abrasive material. The diameter of the body b in its uncompressed state is somewhat greater than the inner diameter of the cap, so that the cap is held firmly ; the cap may be formed of compressed moulding paper. The Specification as open to inspection under Sect. 91 comprises also a cap made of cotton tricot moulded by means of a ring over a mandrel, and saturated with glue which stiffens the cap and secures the abrasive material. This subject-matter does not appear in the Specification as accepted.
Patent GB-407341-A (GB)
Title: Apparatus for the measurement of electrical resistance
IPC: G01R27/02
Filed: 1932-09-14
Abstract: 407,341. Resistance measurements. SCROGGIE, M. G., 197, Church Road, Upper Norwood, London. Sept. 14, 1932, No. 25594. [Class 37.] Apparatus of the shunt meter type comprises a tapped resistance T<1-4> in series with the meter G, the unknown resistance X being connected as a shunt to one terminal of the meter and the tapping points thereby enabling different ranges of resistance measurements. A shunt resistance b, a may determine the value of potential drop applied to the measurement circuit, and this potential may be accurately adjusted through a potentiometer R and fixed resistance R<1>. The tapping points T<1-4> are preferably selected to give whole number multiplying factors, with single or multiple scale readings. Contact resistances in the apparatus are measured by shortcircuiting the terminals X and accurate calibration of the meter thus obtained. A ratio of the potential difference across the battery B and across b, a is conveniently fifty to one.
Patent GB-606438-A (GB)
Title: Electron discharge devices
IPC: H01P1/24
Filed: 1945-10-02
Abstract: 606,438. Discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 2, 1945, No. 25639. Convention date, May 30, 1942. [Class 39 (i)] A gas-discharge tube adapted to be plugged into the end of a coaxial line 31, 32 section for altering its impedance, has two electrodes 19, 22 within an envelope 15 closed by a flexible diaphragm 16 which carries electrode 22. To adjust the separation of the electrodes, diaphragm 16 is flexed by means of a folded toggle consisting of a U-shaped member 24 whose bight is attached to the centre of the diaphragm and whose free ends are linked by struts 25, 26, to fixed points on the rim 23; reduction of the spacing of the free ends by screw 27 causes the bight to move inwards, and vice versa. The filling is preferably a mixture of 20 per cent hydrogen and 80 per cent helium at pressures from a few mm. up to 70 cm. Reference is also made to fillings of argon at high-pressure; helium at 15 cm. with aluminium electrodes; hydrogen at 10-15 cm.
Patent GB-534700-A (GB)
Title: Improvements in and relating to electric fuse bases and multiple fuse boxes
IPC: H01H85/20
Filed: 1939-09-13
Abstract: 534,700. Fuse boards ; fusible cut-outs. HOPE, V. Sept. 13, 1939, No. 25716. [Class 38 (i)] - A fuse base having the contacts held in recesses between two parts 11, 12 of the base as described in Specification 365,518, one of the contacts having a socket to embrace a busbar has this socket 25 located alongside the contact 24 so that it lies either above or below the fuse base instead of behind it. The cable socket 30 of the other contact 29 may be similarly arranged. A series of such bases are threaded upon a rectangular bar 32 supported between the end walls 33 of a casing, and distance pieces 39 may be inserted between the bases and the walls. The bases are clamped by means of screws 37 threaded into a ring 35 and pressing on a flanged washer 38.
Patent GB-675458-A (GB)
Title: Improvements in pneumatically operated percussive tools
IPC: B25D9/16
Filed: 1950-10-23
Abstract: 675,458. Percussive tools. HOLMAN BROS., Ltd., and ABT, F. Oct. 23, 1950 [Oct. 28, 1949], No. 25779/50. Class 124. A pneumatically operated percussive tool having a two- or three-diameter tubular or other valve 1 or 2 for controlling the flow of working fluid, is provided with a slidably mounted recoil member 4 or 7 which is urged forwardly by the pressure of the air supply 11 to the tool and which is in the form of a cap having a thin base portion and a sleeve portion projecting forwardly from the base to receive and make an air-tight engagement with the rear end of the reciprocating piston 14. The cap 7 may form a guide for the rear end of the valve 2.
Patent GB-694700-A (GB)
Title: Improvements in and relating to computing devices
IPC: G06G7/22
Filed: 1951-11-05
Abstract: 694,700. Electric analogue calculating systems; variable contact resistance. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 5, 1951 [Nov. 3, 1950], No. 25827/51. Class 37. A sine cosine resolver potentiometer comprises a pair of non-linearly wound resistance cards 1, 2 whose edges are progressively notched so that the cards are formed as substantially semicircular rings, which are juxtaposed as a closed ring. Adjacent winding ends are joined and respectively connected to sources E of equal positive and negative voltage, and the centre-taps of the windings are earthed. A shaft 3 rotates a cruciform insulating member 4 whose arms carry 90 degree spaced brushes 5 slidable over the resistance cards along a circular path, and respectively interconnected to brushes 8 sliding over four slip rings 10 coaxial to the shaft, which are earthed through respective load resistances 11, across which voltages appear proportional to  sin #, cos #, where # is the angle of shaft rotation. Resilient contacts 12, 13 connected to the appropriate winding ends bridge the junctions of the resistance cards to reduce wear, and the windings are distorted according to a given equation to compensate for the effect of the shunting load resistances on the variation law.
Patent GB-510996-A (GB)
Title: Improvements in and relating to motor vehicle bodies
IPC: B62D21/10
Filed: 1938-09-05
Abstract: 510,996. Vehicle bodies; luggage holders. BRIGGS MANUFACTURING CO. Sept. 5, 1938, No. 25927. Convention date, Oct. 22, 1937. [Classes 103 (ii) and 108 (i)] In a motor vehicle body having a passenger compartment, a pressed metal floor pan 10 is secured to a pair of spaced longitudinal frame members 11, a structural cross frame member 20 formed integral with the floor pan being secured at its opposite ends to the lower ends of opposed substantially vertical pillars 25 forming a rigid tie therebetween. As shown, the member 20 comprising a rib-like projection adapted to function also as a footrest, is flared outwardly at its ends 21 to fit and be secured, e.g., spotwelded, to the inner faces of flared portions 25b of flanges 25a on the pillars. A reinforcing channel 22 welded in each pillar has an inwardly-projecting flange 23 which is welded to the widened top face of the member 20. The floor pan 10 is also formed to provide the rear transverse bulkhead 34 and the front transverse member 50 which connect respectively the lower ends of the rear pillars 26 and front pillars 41. The side edges of the floor pan are offset downwardly at 12 and flanged at 13 to support outer side sill members 14 having flanges 14a, 14b which are welded to the floor pan and the flange 13 providing a unitary floor structure. To the vertical portions 14c of the sills the flanges 15a of pressed sheet-steel running- boards 15 are adapted to be secured by bolts &c. 16, sound-deadening material 17 being interposed. The invention may be applied to the usual frontengine-driven vehicle, or, as shown in Fig. 1, to a rear-engine-driven vehicle of the unitary chassis and body type similar to that described in Specification 509,243. The pillars 25, 26 support the roof 27 which. is secured to roof rails 28, the rear edge of the roof being welded to a sheet 31 partly covering the engine compartment 32 and forming a partition 33 separating the passenger and engine compartments and secured at its lower edges to the transverse bulkhead 34. A rear panel 44 and hinged lid 45 close the rear part of the compartment 32. At the front of the vehicle is provided a luggage and spare tyre compartment 35 formed preferably by continuations of the side walls of the body, the dash 36, floor 10, and 'top sheet 37, the sheet 37 having a lid or bonnet 38 hinged to and supported by a frame 42.
Patent GB-1241379-A (GB)
Title: Improvements in or relating to target structures for cathode ray tubes
Inventor: BODMER MAX GEORGE
IPC: H01L27/144
Filed: 1969-05-21
Abstract: 1,241,379. Image pick-up tubes; semiconductor target. WESTERN ELECTRIC CO. Inc. 21 May,1969 [27 May, 1968], No. 25936/69. Headings H1D and H1K. A target electrode for a vidicon-type tube comprises a substrate 10 adapted to produce hole-electron pairs on exposure to radiation, and a plurality of charge-storage regions 12 separated by insulating material 11, the materials of areas 11 and 12 being such that the quotient of the thickness and the dielectric constant is greater for areas 11 than for areas 12. The substrate may be N-type silicon 5 to 30 microns thick for use with visible light, gallium arsenide for infra-red, or gold for use with X-rays. The regions 12 are preferably of a material wherein the current is proportional to a power of the voltage, such as silicon nitride, boron nitride, Al 2 O 3 , Ta 2 O 5  or SiO x , where x is less than 2, and may be 500 Š thick; the areas 11 may be of silicon nitride or silicon dioxide 5000 Š thick. The two materials need not be different or entirely separate. In one modification, Fig. 3 (not shown), holes corresponding to areas 12 are formed in a continuous insulating layer on the substrate, and a second insulating material is then deposited over the entire surface of the target. In another modification, Fig. 4 (not shown), two insulating layers are deposited over the entire surface of the target, and holes are formed in the outer layer to expose areas of the inner layer. A thin phosphorus n<SP>+</SP> layer may be diffused into the surface of the target exposed to the image to provide ohmic contact, low surface recombination velocity for holes, and impurity gettering to increase bulk lifetime. The surface of the isolating insulator 11 can be covered with a metal or semi-insulating film to dissipate unwanted charge accumulation.
Patent GB-477716-A (GB)
Title: Improvements in or relating to swash-plate type of engines
IPC: F16H23/06
Filed: 1936-09-24
Abstract: 477.716. Swash-plate mechanisms. NEVATT, C. G., and SHEARER, F. W. Sept 24, 1936, No. 25961. [Class 80 (iii)] Swash-plate mechanism of the kind wherein the engine shaft is provided with an inclined crank pin which is rotatable in the swash member, and wherein the engine pistons are connected to a member guided to move parallel to the engine shaft, such member being connected also through a loose connection and a universal joint with the swash member, is constructed so that the path produced by the combined movements of the contacting points when moved along the engine axis, is a circle, the equation of which is y<2> + [Z+ R(cosalpha+1)/2]<2> = [R(1-cosalpha)/2 + K]<2> where alpha is swash-plate angle. The piston rod 10 is secured to a cylindrical head 14 which in turn is secured to a cylindrical guide member 16 having its other end closed by a cap 17. This guide member is adapted to move along a main guide surface 18. The swash-plate 19 is provided with a head 20 having a spherical end 21 which is held between two members 22, that are encircled by a cover 7 having at its ends cylindrical caps 24, the peripheries of which contact with cylindrical recesses 25 in the two closure members 14, 17 respectively. The head member 20 moves within a slot 26 in the main guide member 18. In a modification, the connecting rod 28 has a divided socket end 27 secured bv side bolts 29 which pass through lugs 30 on either side of the sockets, these lugs having flat sides 31 engaged by fixed guides 32. The ball portion 33 is in two parts which are extended to form a spigot 35 which carries a guide member 9 and washer 38 which engage the sides and top of a slot 36 in an upper extension of the socket. Within the ball is a slot 39 having flat sides 40 of circular contour engaging flats on the circular head 44. In a modification, the head on the swash-plate is pivotally secured to a two-part block of cylindrical form which is movable between the flat walls of a larger cylindrical recess in a block which is guided to slide parallel to the shaft and is connected by a pin joint with the connecting rod.
Patent GB-1187416-A (GB)
Title: Improvements in or relating to Impedance Inverters
IPC: H03H11/40
Filed: 1967-06-06
Abstract: 1,187,416. Impedance inverters. TELEFUNKEN PATENTVERWERTUNGSG.m.b.H. 6 June, 1967 [22 July, 1966], No. 26112/67. Heading H3W. An impedance inverter is formed from a resistance network and two high-gain amplifiers of the type having a low input impedance and a high output impedance, the parameters of the circuit being chosen in accordance with a number of equations set out in the claims. Fig. 4 shows one form of the circuit.
Patent GB-383686-A (GB)
Title: Improvements in apparatus for regulating the flow of hot molten metal or other hot molten material in a pipe
IPC: B22D37/00
Filed: 1931-09-18
Abstract: 383,686. Feeding plastic substances to moulding-apparatus. STARLING, P. P., 18, Green Drive, Timperley, Cheshire, PUGH, W. D., 17, Mona Road, Steel Bank, Sheffield, ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London, and ENGLISH STEEL CORPORATION, Ltd., Vickers Works, Sheffield. Sept. 18, 1931, No. 26221. [Class 87 (ii).] Apparatus for regulating the flow of hot molten material in a pipe 1 comprises a jacket 2 surrounding the pipe, means for passing cooling fluid through the jacket to solidify the molten material, and means for heating, at other times, the jacket or fluid passed through the jacket to remelt the solidified material. When the flow of material is to be stopped it is preferably first restricted by a valve 5. The pipe 1 may be provided with gills and be heated, when required, by passing an electric current through the parts 9, 2, 4, 1 the closure 3 being preferably of insulating material. The Provisional Specification describes the use of a current of air for cooling the pipe. Specification 360,980, [Group XXII], is referred to.
Patent GB-251316-A (GB)
Title: Improvements in lids for powder containers
IPC: B65D47/26
Filed: 1925-08-11
Abstract: 251,316. Marsh, S. F., (Solar Products Co.). Aug. 11, 1925. Powder distributors. - A cylindrical powder container has a double cover comprising an inner part B seamed to the top of the container and an overlying portion E, the rim of which is spun over the edge of the part B so as to be rotatable thereon, each part having a single aperture, which apertures are brought into register for pouring purposes. Specifications 787/04, 21152/06; 13801/07, [Class 125, Stoppering &c.]; and 26128/10 are referred to.