baber/WOPTO huggingface dataset:
Patent GB-1146079-A (GB)
Title: Vertical take-off jet aircraft
IPC: B64C23/00
Filed: 1966-06-07
Abstract: 1,146,079. V.T.O.L. aircraft. DE HAVILLAND AIRCRAFT OF CANADA Ltd. 7 June, 1966 [19 Jan., 1966], No. 25366/66. Heading B7G. A VTOL aircraft is provided with vertical thrust by an arrangement comprising jet engines 40 mounted in the wings and each having a slit nozzle 48 spaced from the undersurface 49 of the aircraft fuselage 50 whereby the exhaust gas stream emitted from the nozzle, due to the " Coanda effect," attaches to the undersurface 49 and furthermore induces air to flow with the stream from the spaces between the nozzle and the fuselage 50, and between the nozzle and a variable gate 52. The undersurface of the aircraft is curved downwardly to a longitudinally extending tip 72 such that the gas streams 73, 74 from the engines in each wing and their induced air flows combine below the tip to provide the vertical thrust. To control the air flow each variable gate 52 is movable along a slot 59 by means of a jack 56 and is guided by a pivoted link 54. The air which flows with the exhaust gases is drawn through louvres 64 in the upper surfaces 65 of the wings and through the gap between the upper end of the gate 52 and the undersurface of the wing. Air is admitted to the engines through inlets 41 closed by doors 42 during forward flight. The arrangement is shown embodied in several different aircraft configurations.
Patent GB-665534-A (GB)
Title: Improvements in or relating to coaxial conductor electrical transmission lines
IPC: H01B11/18
Filed: 1949-10-03
Abstract: 665,534. Coaxial cables. GENERAL ELECTRIC CO., Ltd., and BISPHAM, G. E. Sept. 18, 1950 [Oct. 3, 1949], Xo. 2,3382/49. Class 36. In a coaxial-conductor transmission line at least the outer conductor comprises a series of short, rigid tubular sections each having its inner surface and both ends machined, which are joined together in accurate alignment by connecting means and which carry adjustable means for maintaining the surface of the inner conductor coaxial with the inner surface of the outer conductor. Each tubular section 1 is provided with a circumferential flange 2 near each end. The sections are joined end to end and held in alignment by metal blocks 3 which are bolted to flanges 2. The external surfaces of each section are tapered inwardly at each end 4 and the internal surfaces of blocks 3 are machined to fit tightly on the ends of sections 1, which are also machined. All the sections are slotted longitudinally to form a continuous slot 5 for the reception of a probe. The inner conductor 6 is preferably tubular and may be continuous or may be made in sections joined by tie pieces. Each section 1 is provided with a circumferential flange 7 midway along its length into which four regularly-spaced bushes 8 are screwed. A circular ground quartz rod 9 passes through each bush 8 so that its inner end rests on conductor 6, a screw 11 being provided to adjust the longitudinal position of each quartz rod.
Patent GB-642927-A (GB)
Title: Non-slackening nut and bolt locking combination
IPC: F16B39/08
Filed: 1947-09-17
Abstract: 642,927. Locking nuts. CONTRACTOR, E. N. Sept. 17, 1947, No, 25434. Convention date, July 12,1944. [Class 89(i)] Nuts 5 carry a number of pins 8 secured by riveting or welding at 17. The pins may be screwed into the nuts. A locking plate 9 has a ring of holes 10 and slides over the pins 8 the number of holes being a multiple of that of the pins to afford a choice of engaging positions. A polygonal projection 11 on the plate engages in a corresponding recess in the end of the bolt and a split pin passes through holes in the plate and bolt to retain the parts in engagement. In a modification the plate is slotted or holed to engage the end of the bolt, under this form only the bolt is drilled for the pin. If finer adjustment to secure tightness of the joint is required, washers 16 of various thicknesses may be employed under the bolthead which may have an integral flange 4.
Patent GB-928881-A (GB)
Title: Improvements relating to light loading ramps
IPC: B65G69/28
Filed: 1958-08-08
Abstract: 928,881. Ramps. H. C. SLINGSBY Ltd., and G. SLINGSBY. Aug. 7, 1959 [Aug. 8, 1958], No. 25538/58. Class 78 (3). [Also in Group XXXIII] A ramp or dock board, adapted to bridge the gap between a loading platform and the floor of a lorry, comprises a plate 1 of aluminium alloy provided with a chequered upper surface and having its side edges upturned to form curbs. The plate has a convex bend at 3 which is reinforced by a pair of castings 5-9 which also constitute carrying handles. One or more stops 11 are secured to the plate to locate it relative to the platform and/or lorry floor.
Patent GB-445273-A (GB)
Title: Improvements in and relating to wireless and like receivers
IPC: H03G3/26
Filed: 1934-09-05
Abstract: 445,273. Valve circuits for wireless reception. TRUEFITT, E. S. V., 115, Elgin Avenue, Maida Vale, and SPENCER, R. E., 8, Courtfield Gardens, West Ealing, both in London. Sept. 5, 1934, No. 25607. [Class 40 (v)] In a receiver in which inter-channel noise suppression is effected by causing a carrier frequency amplifier to pass grid current which, flowing through the load resistance of a detector diode, also disables the latter, the rectified signal voltage developed in said load resistance by signals of above a predetermined amplitude is amplified and then used to suppress the flow of said grid current. As shown, in the absence of signals of above a predetermined amplitude, the cathode 13 of the audio frequency amplifying triode 11 is positive relative to earth being connected through a resistance 22 to a point 23 on the plate current source which is negative relative to earth. The grid of the I.F. valve 8 is connected to the cathode 13 through its input tuned circuit 10 and resistances 19, 15, while its cathode is earthed through a switch 21. This causes grid current to flow to reduce its amplification and disable the diode detector 12, 13, the load resistance of which is the resistance 15. When a signal of above a predetermined amplitude is fed to the diode 12, 13, the D.C. potential together with an adjustable portion of the signal developed in the load resistance 15 is fed to the grid of the triode 11 from the potential divider 17, 18 shunted across the resistance 15. The anode current of triode 11 is thus reduced, its cathode 13 becomes more negative, the grid of valve 8 becomes negative, grid current ceases to flow, the blocking bias on the diode 12, 13 is removed and by a cumulative action the grid of valve 8 reaches its correct operating potential. Earlier valves such as 7 receive amplified volume control potentials from the cathode 13 through the diode 13, 24 which becomes conducting when the cathode reaches earth potential, the anode being earthed through a resistance 25. The muting action may be disabled by opening the switch 21 to include a biassing resistance 26 in the cathode circuit of valve 8. In a modification (Fig. 3, not shown), the resistance 19 is replaced by a choke and the switch 21 is replaced by a double pole switch which in the muting position includes a manually variable biassing control for the valve 8 which in the other position is controlled directly by the common A.V.C. source.
Patent GB-1023860-A (GB)
Title: Improved device for regulating pile height in flyer sheet deliverers
IPC: B65H31/12
Filed: 1964-06-22
Abstract: 1,023,860. Sheet delivery apparatus. ADAMOVSKE STROJIRNY, NARODNI PODNIK. June 22, 1964 [June 22, 1963], No. 25658/64. Heading B6H. In sheet delivery apparatus wherein sheets are deposited to form a pile 9 on a table 10 which is lowered intermittently to keep the top of the pile at a substantially constant height, the top sheets of a pile which is too high are arranged to urge a resiliently mounted flap 2 to close the mouth of a member 3 connected to a source of vacuum by a pipe 8. The member 3 is also connected by a pipe 7 to a cylinder 5 containing a piston 6 which is urged upwardly by a spring 4, so that when the flap 2 is closed, the vacuum established in the cylinder 5 is sufficient to overcome the force of the spring, and the piston 6 is lowered. The piston 6 operates, when it is lowered, a means for lowering the table 10. As disclosed, the valve and member 3 are carried by a fixed or oscillating stacker mechanism 1, and the sheets are delivered to the pile 9 by a sheetflyer delivery means from a printing press.
Patent GB-364009-A (GB)
Title: Improvements in or relating to optical devices for use in the production of stereographs
IPC: G02B27/10
Filed: 1930-08-28
Abstract: 364,009. Stereoscopic photography. LEITZ GES., E., Optical Works, and LIHOTZKY, E., 10, Frankfurterstrasse, both in Wetzlar, Germany. Aug. 28, 1930, No. 25722. [Class 97 (i).] In apparatus for producing stereoscopic photographs in which an optical device consisting of two complementary reflecting systems is attached in front of the objective of an ordinary camera, each reflecting system is so arranged that a ray incident on one reflecting surface at the critical angle for at least one suitable colour, is after reflection also incident on at least one further reflecting surface at the critical angle, the final emergent ray being directed approximately on the bounding line separating the complementary images on the plate or film. Each system may consist of two separated prisms of the same refractive index, the exit surface of the first prism being inclined to the entrance surface of the second ; or it may consist of two prisms of different refractive indices cemented together. The Figure shows an arrangement of the latter form, each system consisting of cemented prisms O,N. The ray P incident on the right hand system is totally reflected at the critical angle by the surface N<2>, and again at the critical angle by the surface O<2>, and is then focused by the objective Q on the dividing line R<1> between the two image spaces on the plate R. Rays such as P<1> are incident on both surfaces N<2>, O<2> at angles greater than the respective critical angles and are thus totally reflected by these surfaces and imaged on the left-hand half of the plate. Rays incident on the surface N<2> at angles less than the critical angle are almost wholly refracted by that surface, the small amount of light reflected being incident on the surface O<2> at an angle less than 'the critical angle and. again almost wholly refracted so that practically no light from the right-hand reflector arrives on the righthand half of the plate.
Patent GB-1389740-A (GB)
Title: Vehicle drive wheels
Inventor: STEINERT KURT
IPC: B60K17/04
Filed: 1972-06-02
Abstract: 1389740 Vehicle drives LINDE AG 2 June 1972 [2 June 1971] 25808/72 Heading B7H A vehicle drive wheel comprises a driven central sun wheel 16 and a plurality of planet wheels 13 freely pivoted on a carriage member 15 attached to the vehicle wheel, the planet wheels, engaging an outer gear rim 9, rotatable about a housing member 6 which carries the vehicle wheel and secured to the vehicle frame, wherein clutch couplings are provided between the member 15 and the sun wheel shaft 17, and between the outer gear rim 9 and the housing member 6. The clutch couplings comprise free wheel 19 and free wheels 10, 11 which act in opposite directions the engagement and disengagement of which are carried out by hydraulic pistons 20, 21 according to the oil pressure from a hydraulic drive. The drive may alternatively be provided by an electric motor and means may be provided wherein a change of gear ratio is effected automatically in dependance upon the working pressure in the case of a hydraulic motor or upon the current consumption in the case of an electric motor.
Patent GB-1414018-A (GB)
Title: Field effect transistor integrated circuit manufacture
IPC: H01L27/118
Filed: 1973-05-30
Abstract: 1414018 Computer aided integrated circuit design INTERNATIONAL BUSINESS MACHINES CORP 30 May 1973 [30 June 1972] 25812/73 Heading G4A [Also in Division H1] In a computer-assisted method of producing a pattern from which a photolithographic diffusion mask for the production of an IGFET dynamic logic IC is prepared, a set of parallel strips is first defined denoting on the circuit substrate alternately allowed and forbidden zones for diffusion and then pairs of bar diffusion images spaced more than a predetermined distance apart are defined on adjacent allowed zones defining the locations of the IGFET source and drain electrodes. In the described embodiments after information defining the pattern of strips has been stored in the computer the pattern is displayed on a CRT and the designer uses a light pen to select the desired position of the origin of coordinates of one IGFET pattern of chosen aspect ratio. After checking that this lies on the lower edge of an allowed diffusion zone the computer calculates the device image and causes it to be displayed and stored, unless the IGFET overlaps or is too close to another, when a new position has to be chosen. It then checks the wireability of the device. If the device is unwireable the position has to be reselected until both the spacing and wireability criteria are met. The above processes are then repeated for all other devices in the desired circuit, and the device position coordinates recorded. The designer then indicates on the displayed image the terminations of the interconnection diffusion images required to connect source and drain images to complete the circuit and these also are recorded by the computer and displayed. Finally the designer selects the position of metallized clock lines and the holes in the oxide insulation through which they are to be connected to the appropriate interconnection diffusion, the computer checking that the poles overlie diffusions and calling for relocation if not. Photolithographic replicas of the diffusion image pattern, the holes and the metallization lines respectively are generated from the stored information and reduced to the correct size. Application of the method to the laying out of a 4 NAND circuit in a substrate area different parts of which are already occupied, is described. In the above method the diffusion bar images are of the same width as the allowed diffusion strip images.
Patent GB-910554-A (GB)
Title: Improvements in or relating to the preparation of new resinous condensation products
IPC: C08G69/34
Filed: 1961-07-17
Abstract: In a process for the production of resinous condensation products, a mixture comprising boleko oil or a fatty acid obtainable by hydrolysis therefrom or an ester of said acid with a mono- or polyhydric saturated aliphatic alcohol and a drying or non-drying oil (other than boleko oil) or a fatty acid obtainable by hydrolysis therefrom or an ester of such fatty acid with a mono- or polyhydric saturated aliphatic alcohol is reacted by heating with an aliphatic polyamine containing at least two primary amino groups.  Many drying and semi-drying oils are specified.  Specified polyamines are ethylene and hexamethylene diamine, diethylene triamine, triethylene tetramine, tetraethylene tetramine, tetraethylene pentamine, dipropylene triamine and bis-(3-amino-n-propyl) ether.  The examples describe the preparation of resins soluble in ethylene glycol monoethyl ether from boleko oil and:-(1) and (2) linseed oil and diethylene glycol; (3) linseed oil fatty acid and diethylene triamine; (4) linseed oil and triethylene tetramine; (5) wood oil and diethylene triamine and (6) and (7) ricindeic acid and diethylene triamine. The products may be used for curing epoxy resins.
Patent GB-1140233-A (GB)
Title: Improvements in or relating to gas lasers
Inventor: KUTIK MILAN
IPC: H01S3/032
Filed: 1967-06-05
Abstract: 1,140,233. Lasers. TESLA NARODNI PODNIK. 5 June, 1967 [17 June, 1966], No. 25841/67. Heading H1C. A helium-neon or argon gas laser has the gas discharge restricted to a tube 7 mounted in the gas enclosure 6 by a partition 8, Fig. 2, or by a ring 9, Fig. 3, the gas enclosure also containing position-adjustable resonator mirrors 12, 13. The gas discharge is established by D.C. applied to electrodes 18, 19. Either or both the mirrors may be semi-transparent, the output beam passing through windows 14, 15 in the gas enclosure. External adjustment 16, 17 of the resonator mirrors is provided.
Patent GB-425689-A (GB)
Title: Improvements in and relating to processes for the treatment of textile and fibrous materials
IPC: D06P1/46
Filed: 1933-09-20
Abstract: In the treatment of textiles, leather and other fibrous materials, the action of the baths or other agents is improved by the addition of products obtained from proteins by decomposing them beyond the protalbinic and lysalbinic acid stages, but not down to the amino acid stage.  This if effected by decomposing at least 10 per cent of the total protein by means of the usual agents while stopping the hydrolysis before the amino acid stage is reached as shown by the Biuret test.  A method of determining the degree of decomposition of the protein is described.  Casein, albumin, gelatine, glue, hide, muscles, wool, hair, animal offal, fruit, beans, lentils, embryos, lupines, gluten, fish, globulins and oil cake may be used as starting material and caustic soda, sulphuric acid, sodium peroxide, nitric acid, permanganates, hypochlorites, pepsin, trypsin and yeast may be used for effecting the decomposition.  In examples: (1) material is impregnated with a suspension of Indanthrene blue RS containing a hydrolyzed milk casein and then passed through a bath of sodium sulphoxylate; sulphur dyes may similarly be employed; (2) the decomposed proteins are added to naphthol baths used in dyeing with azo dyestuffs on the fibre.  The assistants may also be used in dyeing cellulose esters, regenerated cellulose, feathers, hair, pelts in acid, neutral or alkaline baths; when neutralized with an organic acid the assistants may be used in dyeing with oxidation or ferrocyan - aniline blacks.  In printing, e.g. with mordant dyestuffs, improved shades are obtained, and when the printing of wool is preceded by slop padding with the assistants neutralized with acetic or oxalic acid, the fibres are protected.  Similar protection is afforded when bleaching cotton in the presence of acid, cleaning animal fibres and mercerizing cotton with sulphuric acid.  Improved effects are obtained when mercerizing lyes containing the assistants and other wetting agents such as phenols are employed and when emulsifying fatty substances in the preparation of finishes.ALSO:Products obtained by decomposing proteins beyond the protalbinic acid and lysalbinic acid stages, but not to the amino acid stage are used for emulsifying fatty substances.
Patent GB-1302152-A (GB)
IPC: H01J31/50
Filed: 1971-04-19
Abstract: 1302152 Electron multipliers; image interisifier PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [6 April 1970] 26025/71 Heading H1D A micro-channel secondary emission electrode comprises a matrix of insulating material having two substantially parallel boundary faces and traversed by micro-channels 5 extending between said two faces, the inner surfaces of said channels being adapted to provide secondary emission, characterized in that at the periphery of the said faces there is at least one region in which the channels are filled. The electrode may be made by coating those channels which are to remain filled with an etch-resistant material and dissolving the fillings of the other channels. The faces of the matrix may be provided with a metallic layer by vacuum evaporation or cathode sputtering. In an image converter contacts 7 support the matrix at the region of filled channels between a photocathode 8 and a phosphor screen 9.
Patent GB-1489169-A (GB)
Title: Method and apparatus for machining housings for slant axis rotary mechanisms
IPC: B24B19/00
Filed: 1976-06-24
Abstract: 1489169 Grinding CATERPILLAR TRACTOR CO 24 June 1976 [24 Nov 1975] 26272/76 Heading B3D A method of machining an end surface 22 of a housing 12 for a slant axis rotary mechanism having a slant angle # and a rotor-to-shaft-tohousing timing relationship S R /S S /S H  comprises rotating the housing about its central axis A at a first rate of rotation R 1  with the end surface engaged by a grinding tool 108, and simultaneously rotating the housing about a second axis B intersecting the axis A at an angle 0 at a second rate of rotation R 2 , the rates of rotation being defined by the relationships R 1 = n(S H -S R ) and R 2 =n(S S -S R ), when n is an arbitrarily selected average angular velocity. In apparatus for carrying out the method, the grinding tool is mounted on the shaft of a motor 106 carried by a pedestal 102 from a base 100. The housing 12 is mounted on a workholder 112 carried by a shaft 110 which is journalled in a carriage 114 and secured to a worm-wheel 116 meshing with a worm 118 carried by a shaft 120 also journalled in the carriage. A timing gear 122 is fixed to the worm 118 and meshes with an idler gear 126, in turn, meshing with a second timing gear 128 which is fixed to a worm 132 carried by a shaft 130 journalled in the carriage and driven by a motor 140. The worm 132 meshes with a stationarily mounted worm-wheel 134 on a stationary shaft 136 which is fixed to the base 100 and journals the carriage for rotation about the axis B which intersects the axis A of the shaft 110 at the angle 0. Rotation of the shaft 130 by the motor 140 causes rotation of the carriage 114, and hence the shaft 110 and housing 12, about the axis B simultaneously with rotation of the shaft 110 and housing about the axis A so that the grinding tool produces the desired shape on the end 22 of the housing 12, the rates of rotation R 1 , R 2  about the axes A, B, respectively, being determined as above. In another embodiment, the grinding wheel is reciprocated towards and away from the axis A to produce grinding marks which promote longer life of seals used in the rotary mechanism. The grinding wheel may be shaped and guided to produce a convex or concave configuration on the end surface 22.
Patent GB-817747-A (GB)
Title: Improvements in or relating to pulse correcting circuit arrangements
IPC: H03K5/06
Filed: 1957-08-20
Abstract: 817,747. Pulse-correcting networks. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 20, 1957 [Aug. 23, 1956], No. 26278/57. Class 40(8). A network for reducing the amplitude of the pulse tail 10<SP>1</SP> of a pulse 10 comprises a series arrangement of two line sections 1, 2 of equal electrical length and characteristic impedance R 0  terminated at their input ends by resistances 3, 4 equal to R o  and at their remote ends by finite resistances 5, 6 of values respectively R o <SP>2</SP>/R and R. The resistances 5, 6 may be variable, in which case they are ganged to preserve the relationship specified above. It is shown in the Specification that an input pulse 10, 101 applied across terminals 8, 9 produces across the resistance 4 an output pulse consisting of a non-delayed pulse 11, 11<SP>1</SP> and a delayed pulse 12, 121, adjustment of resistances 5, 6 enabling the delayed pulse to be made equal in amplitude and opposite in polarity to the pulse tail 11<SP>1</SP> of the non-delayed pulse. Hence the tail 131 of the resultant output pulse 13, 131 is substantially reduced. It is shown in the Specification that the network has a constant ohmic impedance R o  provided that the relationship between the values of the resistance 5, 6 is maintained. A number of networks may be connected in cascade, the electrical length of the line sections in successive networks being chosen so that they produce delays equal to successive multiples of one half the duration of the input pulse. Specification 674,522 is referred to.
Patent GB-152526-A (GB)
Title: A process of refining arsenious acid
IPC: C01G28/00
Filed: 1919-10-27
Abstract: Arsenious acid is refined by mixing it with copper oxide, a mixture of copper oxide and iron oxide and then distilling.