baber/WOPTO huggingface dataset:
Patent GB-572406-A (GB)
Title: Improvements in aeroplanes
IPC: B64D37/04
Filed: 1940-01-29
Abstract: 572,406. Aircraft structures. AEROPLANES MORANE-SAULNIER, SOC. ANON. DE CONSTRUCTIONS AERONAUTIQUES. Jan. 29, 1940, No. 1805. Convention date, June 9, 1939. [Class 4] An aeroplane provided with a wing or wing centre portion extending in a continuous manner from one side to the other of the fore- and-aft plane of symmetry, is characterised by the fact that the wing or wing centre portion is constituted by a homogeneous box-like structure forming a fuel tank, the wall of which is made solely of sheet metal or the like uniformly distributed over the periphery of the box-like structure, at least one part of said wall forming a stressed skin for the wing, which includes no spar members exterior to the skin of the boxlike structure. The centre section comprises an upper and a lower stressed skin which may be braced by members e and bulkheads B, C and strengthened by stringers f. The stringers f may have perforations so as not to reduce the tank capacity. The forward and rear portions of the wing may accommodate slotmechanism and landing flap gear or the whole interior of the wing section may be used as a tank. The central section has T-shaped members r, Fig. 10, secured to it for the attachment of the fuselage c, and end sections b of the wings are secured to L-shaped members s at the ends of the central section. Parts or the whole of the end sections also may serve as tanks. Instead of the central section extending through the fuselage it may be attached thereto above or below the fuselage. A single engine may be used or two nacelles may be mounted, one at each end of the central section.
Patent GB-1496171-A (GB)
Title: Mixtures containing polyimides which can be converted to heat-resistant foamed plastics
IPC: C08J9/04
Filed: 1975-01-15
Abstract: 1496171 Expandable polyimide mixtures CIBA-GEIGY AG 15 Jan 1975 [16 Jan 1974] 1819/75 Heading C3C A mixture which can be converted to a heatresistant foamed plastic comprises one or more diimides or triimides of the Formula I in which A is a n-valent C 2-30  organic radical, R is hydrogen or methyl and n is 2 or, 3(b) one or more azomethines of the Formulµ II, III or IV in which R 1  is a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2  and R 3  have the same meaning as R 1 , with the exception of hydrogen, and R 1  together with R 2  and with the inclusion of the carbon atom carrying the two substituents can also be a cycloaliphatic ring system, and E is a divalent C 2-30  organic radical, and (c) a solid blowing agent which has a decomposition point in the range 80-200 C. The mixture may also contain a polyamine of formula D-(NH 2 ) y  in which D is a y-valent C 2-40  organic radical and y is an integer from 2 to 4. The foams are made by heating the mixture in the form of a homogeneous, thoroughly mixed fine powder to 80-220 C. so as to simultaneously foam and cure the mixture. In the examples mixtures of (1) N,N<SP>1</SP> - 4,4<SP>1</SP> - diphenylmethane - bismaleimide or N,N<SP>1</SP>,N<SP>11</SP> - tris - maleimide of tris - (4 - aminophenyl) - phosphate, (2) 1,6- dibenzylidine - hexamethylenediamine; N,N<SP>1</SP>- dibenzylidene - diaminodiphenylmethane; N,- N<SP>1</SP> - dibenzylidene - 1 - 3 - di - (γ - aminopropyl) - 5,5 - dimethylhydantoin; N,N<SP>1</SP> - dibenzylidine - p - phenylene - diamine; 1,2- dibenzylidene - ethylenediamine; 1,4 - dibenzylidene - p - xylylenediamine; N,N<SP>1</SP> - di - 2 -chlorobenzylidene) - diaminodiphenylmethane, or benzalaniline, and (3) p,p<SP>1</SP>-oxy-bis-(benzenesulphonyl - hydrazide or azodicarboxylic acid amide, with optionally a silicone diaminodiphenylmethane cadmium and lead stearates, formaldehyde/aniline condensate were powdered and fed into a mould where they were cured and foamed by heating.
Patent GB-500673-A (GB)
Title: Improvements in or relating to liquid pressure remote control systems
IPC: F15B11/22
Filed: 1938-01-19
Abstract: 500,673. Hydraulic transmission of power. AUTOMOTIVE PRODUCTS CO., Ltd., CLENCH, E. C. S., and BEESTON, J. P. Jan. 19, 1938, No. 1846. [Class 69 (ii)] A liquid pressure remote control system having a plurality of double-acting slave units connected in series to work in unison from a common supply of pressure liquid is characterized by the provision of valve means which are actuated by the moving part of one slave unit as said part reaches an end of its operative range, and which are thereby caused to byepass the said slave unit for permitting further pressure liquid fed thereto to flow directly to the slave unit next in succession. In the system shown in Fig. 1, the valve means 31 associate with the slave 10 comprises opposed spring-closed ball valves 36, 37 ; at one end of the stroke of piston 19 a tappet 45 thereon rocks a lever 41 which by a push rod 40 opens the valve 36 ; at the other end of the stroke of the piston, a tappet 46 acts through a push-rod 47 to rock the lever 41 and so open the valve 37. A similar device 50 containing valves 48, 49 is associated with the slave 11. With the arrangement shown, when the piston 19 completes its downward movement under the influence of liquid supplied from the selector valve 17 through line 13, the valve 36 is opened as described, and liquid opens the valve 37 and passes through lines 52, 53, 28, thus ensuring that the piston 24 completes its downward movement; thereupon the valve 48 is opened and liquid passes through it and the valve 49 and thereby lines 55, 14 back to the selector valve 17. Rephasing is similarly effected at the other ends of the strokes. In a modification; Fig. 2, each cylinder, e.g. 57, is byepassed by. two devices, e.g. 81, 82, each comprising opposed spring-closed ball valves, e.g. 85, 86, one of which, viz. 86, is opened by the piston, e.g. 60, when the latter reaches the corresponding end of its stroke. The system is applicable to the actuation of a retractable aircraft undercarriage.
Patent GB-593483-A (GB)
Title: Improvements in clutches
IPC: F16D11/12
Filed: 1945-01-24
Abstract: 593,483. Claw clutches; positive detents. GENERAL ELECTRIC CO., Ltd., and FOREMAN, E. F. Jan. 24, 1945, No. 1976. [Classes 80(ii) and 80(iv)] To facilitate smooth engagement in a positive clutch or detent comprising two relatively rotatable members one having a ring of teeth and the other a single tooth co-acting therewith and mounted on a lever which pivots operatively in the plane of the clutch axis, the lever is also rockable about a point in its pivotal axis in the plane of that axis to provide the tooth with a limited circumferential backlash and is resiliently biassed so that application of torque to the tooth moves it circumferentially against the biassing means. As shown applied to a clutch 16, 17, Fig. 1, driving a condenser shaft 13 which is spring-loaded so that the torque load on the clutch is always uni-directional, an electric motor (not shown) drives a toothed wheel 16 through an irreversible worm drive 10, 11. The driven member 17 of the clutch is fixed to the shaft 13 and carries in a wide slot 21, Fig. 4, the radially-engaging tooth 24 which forms one arm of a thin bell-crank lever 22 whose other arm 25 is engaged through a striking sleeve 26 by a clutch-disengaging spring 27 and an operating lever 28. The lever 22 is held at its pivot, by a conical spacing washer 32, against that side of the slit 21 towards which the tooth 24 is urged under the action of the working torque. When disengaged from the wheel 16, the tooth 24 is rocked by. a wire cantilever spring 29 to the position shown in Fig. 4. The teeth on the wheel 16 have radial flanks to assist the engaging action. To transmit bi-directional torques the biassing means may be arranged to bias the tooth away from both limits of backlash. Specification 576,161, [Group XXXVIII], is referred. to.
Patent GB-230798-A (GB)
IPC: F22D1/32
Filed: 1925-01-23
Abstract: 230,798. Josse, E., and Seiffert & Co. Akt.-Ges., F. March 12, 1924, [Convention date]. Multistage screw pumps. - In a multistage direct-contact feedheater utilizing steam from the various stages of a prime mover 1, a multistage pump 3 is used, preferably centrifugal steam from each tapping 9, 10, 11 being led into the feed-water at a connection between the stages 3b .. 3e of the pump at which the pressure of water is equal to or less than that of the steam tapping. The quantity of steam mav be controlled by the temperature of the feed. Reference has been directed by the Comptroller to Specification 14692/06.
Patent GB-1082041-A (GB)
Title: Fluid flow control valve for controlling the connection between a vacuum line and a chamber
IPC: F16K51/02
Filed: 1965-01-18
Abstract: 1,082,041. Valves. UNITED STATES STEEL CORPORATION. Jan. 18, 1965 [Jan. 22, 1964], No. 2169/65. Heading F2V. A valve controlling the connection between a vacuum line and a casting chamber to be evacuated is in the form of a removable cartridge comprising a cylinder 1 telescoped in the vacuum line. The. valve closure is in the form of a circular plate 8 that co-operates with an annular seat supporting an 0-ring 10 and is connected by a pair of cables 12 attached to a shaft 14 rotatable in the cylinder flange 2; winding spools may be disposed on the shaft 14. Rotation of the shaft 14, causes upward motion of the plate 8 to provide a small annular flow path therearound, until the plate contacts a chordal rod 17 whereupon it tilts to a partiallyopen position; when the plate engages a pair of diametrically opposed members 18 it is tilted further to the fully-open position wherein it abuts a stop rod 20. In a modification the plate is provided with a pair of pilot valves 21 to establish a gradual connection across the plate before the latter unseats. The pilot valves are actuated by the cables 12 and each consists of cylinder 23 depending from the plate 8 about an opening therein and having a seat 25 for a valve closure 26; a liner 29 in the cylinder 23 incorporates a number of V-shaped slots which are gradually uncovered as the closure 26 is lifted. When the closure 26 abuts a stop-bar 32 the plate 8 begins to open.
Patent GB-992006-A (GB)
Title: Improvements in compressor units
IPC: F04C18/16
Filed: 1961-05-26
Abstract: 992,006. Compressors. ATLAS COPCO A.B. May 26, 1961 [June 2, 1960], No. 2199/65. Divided out of 992,004. Heading F1N. The subject-matter of this Specification is substantially the same as that of Specification 992,004 but the claims relate to controlling delivery and injection of cooling liquid. Specification 992,005 also is referred to.
Patent GB-558776-A (GB)
Title: Improvements in process for the preparation of ethylene oxide
IPC: C07D301/10
Filed: 1942-02-19
Abstract: 558,776. Catalytic agents; alumina. FAIRWEATHER, H. G. C., (U.S. Industrial Alcohol Co.). Feb. 19, 1942, No..2236. [Classes 1 (i) and 1 (iii)] [Also in Group IV] In the production of ethylene oxide from ethylene and oxygen, the catalyst consists of silver supported on a rigid crystalline alumina consisting of interlocked corundum crystals in tabular. form substantially free from intercrystalline glass. A full description of alumina of this kind is given in U.S.A. Specification 2,209,908, under the name "tabular corundum." Specification 509,183, [Group IV], is referred to.
Patent GB-1330784-A (GB)
Title: Azo compounds their production and use as disperse dyes
IPC: C09B43/20
Filed: 1971-01-18
Abstract: 1330784 Monoazo dyes SANDOZ Ltd 18 Jan 1971 [2 Feb 1970] 2276/71 Heading C4P The invention comprises monoazo compounds having the formula where R 1  and R 2  independently represent chlorine or bromine atoms; R 3  and R 4  independently represent hydrogen or methyl groups; R 5  is hydrogen or a cyano group; and the benzene ring A may bear further substituents with the exception of sulphonic acid groups. The dyes may be prepared by diazotization and coupling or alternatively a monoazo compound of formula may be reacted with an isocyanate of formula in stoichiometric proportions. The dyes may also be produced by condensing 1 mole of a compound of formula with 1 mole of an aniline, or by condensing 1 mole of a compound of formula (vi) with a compound of formula The dyes give brown shades on fibres of synthetic or semisynthetic high molecular weight hydrophobic organic materials, e.g. polyester and cellulose acetate fibres.
Patent GB-927365-A (GB)
Title: Improvements in or relating to stereophonic transmission systems
IPC: H04H20/88
Filed: 1960-01-21
Abstract: 927,365. Stereophonic systems. SIEMENS & HALSKE A.G. Jan. 21, 1960 [Jan. 21, 1959], No. 2300/60. Class 40 (4). [Also in Group XL (c)] In a stereophonic transmission system the two stereo signals are sampled, alternately, after one or both have been biased by a unidirectional voltage. The sampled values are combined, transmitted, and, at the receiver the sampling frequency is filtered out and used for synchronizing. Transmitter.-Stereo signals s1, s2, Fig. 1, are fed via transformers T1, T2, the secondaries of which are polarized by similar but oppositely poled batteries U1, U2, to respective sampling gates M1, M2 opened alternately by pulses a, b, Fig. 2, from a generator G1. The sampled values are combined (waveform c) and fed via a low pass filter F1 (which converts waveform c to d) to the transmitter S. Receiver, Fig. 3.-After demodulation at E, the received waveform d is fed to gates H1, H2, opened in synchronism with the corresponding gates M1, M2 at the transmitter, to pass the respective components of waveform d over low-pass filters D1, D2 to reconstitute the original signals s1 s2. The gates H1, H2 are operated respectively by pulses e, f from a generator G2 which is synchronized by comparing the phase of the output pulses e (or f) thereof in a comparator gate A1 with zero-points of the sinusoidal waveform derived from the received signal d by filtering out the modulating components and phase shifting the resultant by 90 degrees in a circuit P1. Lack of synchronism results in an output k from the comparator A1 which varies a reactance X to bring the pulse generator G2 into step. Receiver, Fig. 4.-The synchronizing sinusoidal voltage is here derived from the demodulated signal d by a selective filter F2 and a phase shifter P2 set to bring the total phase shift to 90 degrees before application as control voltage direct to the pulse generator G3. The phase shifter P2 is initially set, or may be automatically adjusted by a selective filter and comparator A2 which passes only the sinusoidal component of the signal d and compares that component in phase with pulses g from the pulse generator phase displaced from the outputs e, f by 90 degrees. The outputs of gates H1, H2 are connected in parallel when the synchronizing voltage is absent to give in effect monaural reception.
Patent GB-889479-A (GB)
Title: Improvements in presses
IPC: B21D22/00
Filed: 1960-01-21
Abstract: 889,479. Punching. ACHTERMANN, G. Jan. 21, 1960 [Feb. 6, 1959], No. 2302/60. Class 83 (4). A press comprises four pull-rods 3 supporting the ram 5 and driven by eccentrics 12 on a shaft 13 disposed below the platen 2 and outside the rods, leaving a free-space R between the platen and floor which may accommodate delivery elements (not shown) associated with electric counters so that rotor or stator sheets may be counted and discharged in bundles. Sleeves 4 on the platen and ball-bearings (not shown) guide the rods, which are connected in pairs by bridges 6 linked at 7 to levers 8. These are driven at one end by the eccentrics 12 and connected at the other to links 10. A flywheel 14 and a brake are provided in the drive to shaft 13.
Patent GB-1485681-A (GB)
Title: Knee joint prostheses
IPC: A61F2/38
Filed: 1975-01-20
Abstract: 1485681 Endoprosthetic elbow or knee joint H KAUFER L S MATTHEWS D A SONSTEGARD and I P MURRAY 20 Jan 1975 [6 Feb 1974] 2468/75 Heading A5R An endoprosthetic knee joint comprises a femoral component 16 having an attachment stem 30 and a pair of spaced, parallel, spheroidally curved condyle runners 22 straddling a hollow central housing, the runners having at one end 26 a larger radius of curvature than at the other end and bearing on a pair of sliding shoes 38 formed on a tibial component 18 having an attachment stem 48. The shoes have a radius of curvature corresponding to that of the ends 26 of the runners such that when the joint is flexed there is clearance between the shoes and runners allowing controlled twisting of the joint. The components are connected by a ball and socket joint, the ball 34 being mounted on a stem 44 extending upwardly from a base 46 of the tibial component and engaging a plastics socket 36 located in the hollow housing. The socket is formed of two segments 36A, 36B each with a slot 68, 62 to provide for movement of the stem during pivoting of the joint. The segments are inserted at right angles to their final position to enable a flat on one segment to clear an overhang of the housing cavity 60, a tool with projecting pins then rotating the segments to their final position and locking them above the overhang.
Patent GB-940198-A (GB)
Title: Improvements in and relating to the separating of sheet metal cuttings from a stack
IPC: B65G59/06
Filed: 1960-01-25
Abstract: 940,198. Feeding sheets. L. SCHULER A.G. Jan. 25, 1960 [June 26, 1959], No. 2598/60. Heading B6B. Suckers 9, 10 are raised to engage the bottom sheet of a pile of metal sheets, e.g. can blanks, are moved to the right to slide the sheet off lefthand support 2 and into right-hand slot 3a, are moved to the left to slide the left-hand edge of the sheet under support 2 and to withdraw the sheet from slot 3a, and are finally lowered to deposit the sheet on conveyer 20. The stack of metal sheets is enclosed at each corner by angle rails such as 1, 1a and the lowest sheet rests upon holder members 2, 3, the middle parts of the sheet being supported by serrated jaws such as 4. The upper portion of the stack is held in an inclined position by a pawl 5 to prevent undue pressure on the bottom sheet. The guide rail 1 has a slot 3a the width of which is adjusted by means of a vertically movable slide 18 so as to be slightly greater than the thickness of one of the sheets. A conveyer 20 comprising two spaced apart gripper chains passes beneath the stack of sheets. Suckers 9, 10 are mounted on hollow rods 9a, 10a which are located between the chains of conveyer 20, being vertically slidable in guides in a platform 8 and biased upwards by springs 23, 24. The platform 8 is carried by a rod 28 pivoted to two links 29, 30 forming a parallelogram drive, power being supplied by a crank-shaft 34, so that as the shaft 34 rotates the platform is reciprocated over an arcuate path. Abutments 15, 15a carried by the rods 9a, 10a co-operate with rollers 16, 17 to arrest upward movement of the suckers 9, 10, the roller 17 being mounted on a bracket secured to the machine frame and the roller 16 on one end of a lever 25 pivoted at 26 and which at its other end carries a cam follower roller 27. As the platform 8 moves upwards the suckers engage the bottom sheet of the stack, a valve 12 is opened by means of a cam 14 so that the suckers are put in communication with a source of vacuum, the springs 23, 24 are compressed and the suckers carry the bottom sheet a short distance to the right so that one end thereof projects through the slot 3a and the other end is clear of the holder member 2. As the platform starts its downward movement the roller 16 is moved downwards by a cam 19 so that the sucker 9 is at a lower level than the sucker 10 and the left-hand end of the sheet lies below the holder member 2. The suckers then move horizontally to the left and downwards whereby the right-hand end of the sheet is pulled out of the slot 3a and the other end slides under a guide face 40. As soon as the suckers reach the level of the conveyer 20 the valve 12 is closed and the sheet separated from the pile by the suckers is carried away by the conveyer. The platform 8 completes its downward movement and then commences another cycle. When the machine is running idly the suction is cut off by a valve 13, operation of which actuates a solenoid 22 which moves a slide 21 into position to close the slot 3a.
Patent GB-1200292-A (GB)
Title: Improvements in or relating to propellant charges
IPC: C08K3/28
Filed: 1963-01-21
Abstract: 1,200,292. Propellent compositions. NITROCHEMIE G.m.b.H. 21 Jan., 1963 [20 Jan., 1962], No. 2605/63. Heading ClD. A propellent charge based on a polyurethane and an oxidizing salt is produced by mixing ammonium nitrate, a polydiol and/or a polytriol, and a diisocyanate in an amount at least 15% by weight in excess of that required to form a polyurethane, and homogenizing, extruding and hardening the mixture. In examples, polypropylene glycol is reacted with toluylene - 2,4 - diisocyanate to form the polyurethane. Butylene glycol, trimethylol propane, glycerol monoricinoleate, or tetrahydric alcohols may be included as chain-lengthening or cross-linking agents, iron acetylacetonate or dibutyl tin dilaurate as accelerators, dioctyl sebacate as a plasticizer, and lecithin or silicone oil as lubricants. Other ingredients referred to are potassium nitrate, ammonium dichromate, nitrocellulose, calcium stearate, active charcoal, and graphite. The diisocyanate may be reacted with part of the triol or diol to form a pre-addition product, which is then processed with the other components and the remainder of the triol or diol.
Patent GB-1082042-A (GB)
Title: Improvements in or relating to transistor amplifiers
IPC: H03G1/00
Filed: 1965-01-21
Abstract: 1,082,042. Gain controlled transistor amplifiers. SIEMENS A.G. Jan. 21, 1965 [Jan. 23, 1964], No. 2617/65. Heading H3T. The gain of a single transistor Tr1 amplifier is controlled by variation of the emitter circuit impedance, in the form of the input impedance of a second transistor Tr2 controlled by a temperature dependent resistor HL connected in its base circuit. The resistor HL has a negative temperature coefficient and is controlled by an independently adjustable or automatically derived D.C. control current Ih which causes the input resistance of transistor Tr2 to change and so vary the negative feedback applied to transistor Tr1. The input E is connected via resistor R1 to the load R2 of transistor Tr2 so that the input impedance which normally increases without feedback remains substantially constant as the negative feedback to Tr1is increased. The collector circuit of transistor Tr1 includes a tuned primary winding W1 of a transformer U, the secondary winding W2 of which can be connected to earth or to a source of reference potential. Alternatively the secondary winding as shown is connected to the emitter of transistor Tr1 the output voltage U2 being of opposite sense to that across the emitter U1 so that additional negative feedback provides a further reduction of amplifier gain.
Patent GB-228560-A (GB)
Title: Improvements in advertising devices
IPC: G09F13/24
Filed: 1925-01-29
Abstract: 228,560. Asiatic Petroleum Co., Ltd., (Assignees of Cook, W. L.). Jan. 29, 1924, [Convention date]. Moving liquids, utilizing.- Apparatus for exhibiting fluids, powders, &c. comprises an inclined sheet 1 of translucent material, such as opalescent glass, over which the fluid is poured from a trough 7. The fluid runs into a sump 5 and may be returned to the trough 7 by a pump 12. A sheet 27 of translucent material, e.g. celluloid, spreads the fluid curtain in its fall on to the sheet 1. A lamp 26 may be provided behind the sheet 1. A number of units may be arranged side by side, the several pumps 12 being driven by a common shaft rotated by an electromotor.