baber/WOPTO huggingface dataset:
Patent GB-279307-A (GB)
Title: Improvement in airplane landing apparatus
IPC: B64F1/36
Filed: 1927-02-21
Abstract: 279,307. Kenney, M. A. Feb. 21, 1927. Landing-places and launching ways.-A tiltable and rotatable platform for landing aeroplanes has a uniformly honeycombed deck, and a base 6 which is so shaped and apertured that the wind currents acting thereon induce a down draught through the deck to assist the aeroplane in landing. The base 6 is convex longitudinally and transversely and has a series of apertures 8. The deck is formed of longitudinal spaced slats mounted on cross members and at its raised end comprises a net. The base 6 finishes in front of the entrance end of the platform and a deflector 9 is provided to produce an up-current of air so that the aeroplane will not be subjected to disturbed air conditions before landing. Means may be employed in the platform to increase the air-currents. An adjustable air deflector 10 may be provided. Longitudinal guide-cables and speed-retarding means may be provided on the deck. Specification 176,821 is referred to.
Patent GB-404478-A (GB)
Title: Improvements in clamping buckles for varying the operative length of straps or the like, especially for braces
IPC: A44B11/10
Filed: 1933-02-17
Abstract: 404,478. Friction - - grip fastenings. STEINER, L., 60, Visegradi Utca, Budapest. Feb. 17, 1933, No. 5001. [Class 44.] In a slide buckle, particularly for adjusting braces, in which a strap 9 is gripped between a slidable wedge member 7 and a casing 8, the strap is released when the tab 14 is pulled upwards or the tab 13 downwards to alter the effective length of the strap. When the tab 14 is pulled upwards, only the casing 8 is lifted at first, thus releasing the strap, and afterwards the wedge member 7 is entrained by a peg 15 which engages with an aperture 16. When the tab 13 is pulled downwards the action is similar except that the wedge member 7 moves first. In a modification, the tabs 13, 14 are formed by a strip of leather, rubber, etc. which is passed through slots in the casing and in the wedge member, and is retained by a widened central portion or by frictional engagement with the slots. In a further modification, the strip is apertured to co-operate with pegs on the casing and on the wedge member. In another form, the buckle is operated by an apertured metal cover plate of channel section.
Patent GB-513679-A (GB)
Title: Improvements in or relating to electrical oscillation generators
IPC: H03B5/18
Filed: 1938-02-17
Abstract: 513,679. Thermionic valve circuits ; wireless receivers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and RAMSAY, J. F. Feb. 17, 1938, No. 5004. [Class 40 (v)] A remotely-controlled oscillator which may be the local oscillator of a superheterodyne receiver comprises a variable tuning circuit at the remote point associated with the grid circuit of the valve over a length of highfrequency cable the capacity of which forms an element in the tuned circuit. The Figure shows an arrangement in which the grid circuit of the oscillator 1 comprises inductance 8, variable capacity 9, and the capacity of line 16 so that the input to the valve is effectively capacitatively tapped down on its tuned circuit. The grid inductance 8 is coupled to the anode inductance 3<1> connected to the anode by highfrequency cable 14. The anode circuit is preferably resonant at or near the upper frequency of the tuning range. Variable inductance tuning may be used and in place of a single valve a number in cascade may be used with the feedback between output and input. When operation at high frequencies is required the nature of the impedance offered by the high frequency cable will change over the operating range. In this case as described in Specification 493,862 the components may be so dimensioned that the oscillator operates as a resonant line oscillator and the anode circuit be resonanted at or near one end of the frequency range for a mode of oscillation to ensure oscillation on that mode.
Patent GB-1046145-A (GB)
Title: Improvements in and relating to the support of field coils
IPC: H02K3/52
Filed: 1965-02-05
Abstract: 1,046,145. Securing coils for dynamo-electric machines. ROBERT BOSCH G.m.b.H. Feb. 5, 1965 [Feb. 8, 1964], No. 5017/65. Heading H2A. The field coils of the salient pole rotor of a three-phase A.C. generator are secured by members having diverging legs which are located between the field coils and held in place by their own resilience. Preferably the ends of the legs engage under the overhang of the pole shoes and are chamfered away from the surface abutting the coil. The members may be made of spring steel or of an elastic synthetic resin. For long rotors several members are used side-by-side to give uniform pressure on the coils.
Patent GB-516463-A (GB)
Title: Improvements in or relating to projectiles comprising a reaction propulsion device
IPC: F42B15/00
Filed: 1938-06-27
Abstract: 516,463. Ammunition projectiles. SAGEB SOC. ANON DE GESTION ET D'EXPLOITATTON DE BREVETS. June 27, 1938, No. 5019/39. Convention date, June 28, 1937. Divided out of 516,818. [Class 9 (i)] A rocket projectile has a rear part 2 containing the reaction charge, which discharges rearwardly through forwardly located nozzles 3. Means are provided at the tail end for effecting ignition of the reaction charge. An initial propulsive cartridge 40l is provided at the rear end of the container and supplementary charge-rings 40n are arranged in the central space between the tail vanes 47. The cartridge 40l is placed in a sleeve 40j, which contains at its forward end a fuze for igniting the reaction charge. The gases from the cartridge drive a striker 40h on to a cap 40p, which in turn ignites a primer 40r and a retarding composition 40s which, at the end of a predetermined time, ignites the reaction charge. In a modification, the sleeve 40j is detachably mounted by a spring clip, and is detached by inertia and by gaseous reaction upon a flange on the sleeve when the projectile is discharged.
Patent GB-1149303-A (GB)
Title: Dielectric compositions and their use
IPC: H01B3/08
Filed: 1967-02-02
Abstract: 1,149,303. Dielectric composition. E. I. DU PONT DE NEMOURS & CO. 2 Feb. 1967 [4 Feb., 1966], No. 5049/67. Heading C1M. A capacitor is formed from a dielectric powder composition containing (A) a crystalline inorganic material having a dielectric constant of at least 50; (B) a glass and (C) an optional compound not exceeding 100% by weight of (B) and being one or more of Bi 2 O 3 , PbO, CdO and WO 3  (in addition to any such oxide present in (B). Component (A) forms 25-99À5% and component (B) from 0À5-75% of the total composition weight. The glass (B) contains (a) 75-95% of at least one of Bi 2 O 3 , PbO, CdO and WO 3 ; (b) 1À5-25% of a glass forming oxide consisting of at least one of SiO 2 , B 2 O 3 , P 2 O 5 , GeO 2  and As 2 O 3  and (c) not more than 12% of any other glass-forming constituent. (A) may comprise: titanates of Ba, Pb, Sr, Cd, Bi and Mg; zirconate of Pb; niobates of Cd or Pb or of lead-bismuth. It is preferably the titanate of bismuth. Many specific compositions are disclosed for the glass in particular in the ranges Bi 2 O 3  72-82; B 2 O 3  3À5; SiO 2  3À5; Pb 0-11 and additions (see Table I (not reproduced)). Metallizing.-Electrodes may be applied to the dielectric body during or after firing and consist of metal mixtures with a glass binder. Silver or an admixture of gold/platinum may be used for this purpose.
Patent GB-940273-A (GB)
Title: Electrophotographic reflex copying process
IPC: G03G5/06
Filed: 1960-02-12
Abstract: 940,273. Electrophotographic reflex copying processes. KALLE A. G. Feb. 12, 1960 [Feb. 21, 1959], No. 5105/60. Heading G2H. [Also in Division H1] An electrophotographic reflex direct copying process comprises assembling together a master capable of reflecting light and transparent to translucent electrophotographic copy material comprising a support of sheet material and a photoconductive layer thereon, the layer being assembled on the side away from the master, charging, with substantial exclusion of light, the photoconductive layer before or after the assembly, passing light through the copy material and developing and fixing the resulting electrostatic copy image. In the case of translucent copy material, this may be made more transparent by soaking in a substance having a refractive index closer to that of the principal component of the support than in that of air.
Patent GB-549001-A (GB)
Title: A process for producing unsaturated alcohols and ethers
IPC: C07C43/15
Filed: 1941-04-21
Abstract: 549,001. Allyl-type unsaturated alcohols. FIFE, J. G. (Shell Development Co.) April 21, 1941, No. 5141. [Class 2 (iii)] Allyl-type unsaturated alcohols and ethers are prepared from the corresponding allyl-type unsaturated halides containing only hydrocarbon substituents by subjecting the unsaturated halide to hydrolysis under acid conditions in contact with an aqueous solution of a cuprous compound. The allyl-type halides which are used as parent materials have the general formula where X is a halogen atom. The free bonds are linked to hydrogen or to a simple hydrocarbon substituent such as alkyl, alkenyl, aralkyl, alicyclic, or aryl. Compounds mentioned as starting materials include allyl chloride, bromide and iodide, crotyl bromide, methyl vinyl carbinyl iodide, 2-methyl-3- chlorobutene-1, 2-methyl-4-chlorobutene-2, 3- chloro-cyclopentene-1, 3-bromocyclohexene-1, cinnamyl chloride, and phenyl vinyl carbinyl iodide. The cuprous compound may be added as such or may be produced in situ. In examples (1) allyl chloride and water are shaken together in the presence of copper powder. The reaction product was distilled to give a mixture of allyl alcohol, and diallyl ether in the ratio of 87 to 13. (2) Allyl chloride is vapourised up a tower containing an aqueous catalyst solution of cuprous chloride and hydrochloric acid. The allyl alcohol is withdrawn from the foot of the tower and the unreacted allyl chloride passes overhead. If it is desired that allyl alcohol should be the principal product the concentration of alcohol in the reaction product is maintained as low as possible by removing the alcohol as it is formed, but if the ether is desired, the concentration of alcohol in the reaction product is caused to become as large as possible. In this way distilling off the ether as the ternary azeotrope with alcohol and water, and recycling the alcohol to the process, the diallyl ether is obtained as the main reaction product.
Patent GB-1126840-A (GB)
Title: Load commutation system for regulating transformers
IPC: H01F29/04
Filed: 1967-02-03
Abstract: 1,126,840. Transformers. E. SCHEUBECK. 3 Feb., 1967 [16 April, 1966], No. 5248/67. Heading H1T. [Also in Division H2] A tap changing arrangement for a transformer comprises tap selector contacts 1, 2, disconnecting switches 5, 6 and main contacts 3, 4 shunted by reverse parallel connected thyristors 7-10 energized only when tap changing is required. When a signal appears on a terminal, e.g. E 1  of bi-stable circuit 40, this gives a 0 output (0=a voltage) to NOR circuit 41 which is inverted in unit 43 and passed to a transistor pair 19 supplying firing pulses to thyristors 7, 8 before contact 3 is opened. When either of the thyristors are passing zero current, as detected by a circuit 31, a 0 signal is passed to NOR circuit 42 which energizes thyristors 9, 10 which supply load current. A signal is then passed from circuit 32 to NOR 42 thus cutting off thyristors 7, 8. Contacts 4 can then be closed and 5, 6 opened. In an alternative arrangement (Fig. 4, not shown) load current transformers replace the circuits 31, 32 and the impulse circuits 17, 18 are controlled through NAND circuits. A capacitor, e.g. 11, can continue to carry load current through the brief commutation period and an air cored choke limits the discharge current through the thyristors. A damping resistor 13 may be also provided.
Patent GB-1418793-A (GB)
Title: Hydraulic power transmission systems
IPC: F15B11/028
Filed: 1973-02-02
Abstract: 1418793 Hydrostatic transmission control SPERRY RAND CORP 2 Feb 1973 [3 Feb 1972] 5255/73 Heading F2W In a hydrostatic transmission for a power shovel wherein a fixed displacement pump 10 supplies pressure liquid to a motor 30 through a spring centered reversing valve 14 which is actuated by pressure liquid acting in chambers 62, the torque supplied to the motor is determined by a pilot operated relief valve 32 which controls the working circuit pressure and is responsive to a manual control 72 which additionally controls valves 78, 80 in exhaust lines 82, 84 from the chambers 62. The chambers 62 are fed with pressure liquid from the pump 10 through duets 60 in the reversing valve spool 18, one-way valves 58 and restrictions 56. Actuation of the manual control 72 rotates a cam 98 which opens one of the exhaust valves 78, 80 and vents the associated chamber 62 whereupon the pressure in the other chamber 62 moves the reversing valve spool 18 into its forward or reverse position against the bias of springs 66. The cam 98 additionally loads a spring 96 of a relief valve 76 which is connected through one-way valves 90, 92 with the exhaust lines 82, 84 and a pilot control chamber 38 of the relief valve 32. The relief valve 76 thus determines the pressure acting in the pilot control chamber 38 and reversing valve chambers 62. The pressure acting in the pilot control chamber 38 determines the working circuit pressure and thus the torque supplied to the motor 30 whilst the pressure in the chambers 62 determines the degree of movement of the reversing valve spool 18. When the manual control 72 is returned to the neutral position, as shown, the spring 66 tends to move the valve spool 18 towards its central neutral position and thus throttle the exhaust from the motor 30. The motor exhaust acts through ducts 67 on a piston 52 fast with the valve spool 18 to oppose the return movement of the spool and thus ensures gentle braking of the motor 30. Rapid braking of the motor 30 is effected by moving the manual control from forward to reverse or vice versa whereupon pressure liquid in the chamber 62 assists spring pressure opposing the motor exhaust acting on the piston 52 to increase the throttling of the motor exhaust. During rapid braking the pilot control chamber 38 of the relief valve 32 is exhausted through ducts 70 and the open exhaust line 82 or 84 to ensure minimum working circuit pressure supply to the motor 70.
Patent GB-1211579-A (GB)
Title: Improvements in or relating to strip fasteners
Inventor: HAWLEY EDWIN LAWRENCE
IPC: A44B19/28
Filed: 1968-02-01
Abstract: 1,211,579. Strip fasteners. E. P. S. (RESEARCH & DEVELOPMENT) Ltd. 17 Jan., 1969 [1 Feb., 1968], No. 5273/68. Heading E2S. A sliding clasp fastener comprises two flexible profiled strips, Figs 7a and 7e which can 'be brought into engagement with the head of the rib 13 of the strip 12 in the recess 2 of the strip 1. The recess 2 is defined by two barbed fingers 3, 4 of the strip 1 to which is connected by a neck 8 a strut 7 which can be engaged in a recess 9 to effect locking. The associated slide, Figs. 1 and 6c comprises three parts which define two channels 24, 25 which diverge towards one end of the slide, the channel 24 retaining its shape along its length but varying in size while the channel 25 varies in shape and size and includes a rib 28 so as to effect the required flexing of the fingers 3 and 4 and the strut 7. The strips may be attached to a piece of material, e.g. of a receptacle, by an adhesive or by welding.
Patent GB-1469401-A (GB)
Title: Damper units
IPC: F16F9/10
Filed: 1974-04-02
Abstract: 1469401 Adjusting vehicle headlamps LUCAS ELECTRICAL Ltd 2 April 1974 [2 Feb 1973] 5307/73 Heading F4R [Also in Division F2] A vehicle headlamp levelling system, Fig. 2, incorporates a viscous damper, Fig. 1, in the linkage between the vehicle attitude sensor and the headlamps, so that the system responds to static rather than dynamic changes in load. The damper comprises a sleeve 1 open at both ends, a rod 4 movable with respect to the sleeve and extending through the sleeve to project from both ends, the rod being a close fit in the sleeve, and a viscous material surrounding the rod within the sleeve, and being supplied from a pressurized reservoir. The reservoir is housed in an internal cavity in the rod and pressurized by a spring-loaded piston 10. Recesses 2, 3 in the sleeve provide additional reservoirs. The viscous material is a silicone liquid with a viscosity of 60,000 centistokes with a specified additive. Sudden relative movement of the rod and sleeve is resisted, but slow relative movement is allowed. The rod 4,5,6 of the damper is connected to an integrator unit 26 which receives signals from the front and rear suspension of the vehicle via a lever 27 and a cable 28 respectively. The integrator unit produces an output movement corresponding to the attitude of the vehicle body, which the rod of the damper transmits via a link 22 and a cross rod 21 to the headlamps 20.
Patent GB-1217871-A (GB)
Title: Fluorine-containing polyethers
Inventor: SIANESI DARIO
IPC: C08G65/00
Filed: 1968-02-02
Abstract: 1,217,871. Perfluoropolyethers. MONTECATINI EDISON S.p.A. 2 Feb., 1968 [9 Feb., 1967], No. 5332/68. Heading C2C. [Also in Divisions C3, C4 and C5] Novel polyethers of formula in which [O] is an oxygen atom randomly distributed along the chain and linked in the peroxidic form, A and B are the same or different -CF 3 , -COF or -CF 2 COF groups, P and Q are integers, R is O or an integer, P + Q is 2 to 200, the ratio Q: P is between 0À1 and 10, the ratio R: P is 0 to 1, and the ratio R: (P + Q + 1) is 0 to 0À8, are prepared by oxidation of tetrafluoroethylene in solution with molecular oxygen in the presence of U.V. radiation, the reacting solution being kept saturated with molecular oxygen. Tetrafluoroethylene epoxide is obtained as a by-product.
Patent GB-457189-A (GB)
Title: Improvements in starting devices for small electric motors
IPC: H02K23/66
Filed: 1935-02-19
Abstract: 457,189. Controlling motors. ELECTROLUX, Ltd., Luton, Bedfordshire.-(Assignees of Aktiebolaget Elektrolux; 2, Norrmalmstorg, Stockholm) Feb. 19, 1935, No. 5345. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 20, 1935]. [Class 35] [See also Groups XXXVII and XXXVI] For starting small motors 12, Fig. 2, driving household appliances such as vacuum cleaners, a resistance element 14 having a high positive temperature coefficient as regards its conductivity, is connected in series in the motor circuit. The element comprises a layer of uranium dioxide 20, Fig. 3, formed on a ceramic rod 18 enclosed in a glass container 19, which container may be evacuated or filled with dry inert gas at a predetermined pressure. Metal caps 21 provided at the ends of the rod are connected to the ends of leads fused in the glass container. A separate heating resistance for the element may be provided. A device 15 may be shunted across the supply leads for preventing interference with radio installations, and this device together with the resistance element, may be secured by clamps to the motor housing.
Patent GB-860955-A (GB)
Title: Method of and apparatus for the dip-coating of articles
Inventor: DARBY CHARLES HERBERT
IPC: B05C3/10
Filed: 1958-02-19
Abstract: <PICT:0860955/III/1> <PICT:0860955/III/2> <PICT:0860955/III/3> An article is dip-coated by causing it to move along an epicyclic path in a vertical plane and whilst so moving to pass through liquid coating material so as to take up a coating thereof, subsequent movement along said path serving to air-dry the coating on the article.  As shown (Figs. 1, 4 and 5) apparatus for dip-coating comprises a frame 10, a turning member with a hub 11 and spokes S having forked ends 12 and secondary arms 14, containers 16 one on each side of the plane of the turning-member, and a rope track 23 tensioned by a weight 25.  A grooved pulley-wheel P on an axle 20 may be placed in the forked end of each spoke; carriers 22 for holding articles to be coated may be attached to the ends of the axles.  The turning member is driven so that the pulley-wheels P are rotated as they bear against the rope track.  If any spoke does not carry a pulley-wheel the rope track is maintained in position by an idler pulley-wheel 15 on the secondary arm.  The pulley-wheels with carriers attached may be picked up by the spokes from the device 18 and are deposited after drying on the inclined plane 26.
Patent GB-392312-A (GB)
Title: Improvements in or relating to drawing instruments
IPC: B43L7/12
Filed: 1932-02-23
Abstract: 392,312. Setsquares &c. TANNER, A. R. W., 34, Oxford Street, London. Feb. 23, 1932, No. 5433. [Class 97 (iii).] In a measuring-rule comprising three equal strips bevelled at their ends at an angle of 60‹ and with the ends of two of the strips hinged to the ends of the third strip, means are provided for connecting the free end of one of the outer strips to the free end of the other outer strip to form an equilateral triangle or to an intermediate point to form in one folding a metre gauge and in another a combined setsquare and T-square. In the form shown, the strip 1 is provided at the free end with an upturned nib which may engage a perforation 22 in the strip 3 to form an equilateral triangle or a perforation 17 to form a combined setsquare and T-square as shown. A mitre gauge is formed by inserting the nib in the perforation 17 with the strip 2 at right angles to the strip 3. Graduations 11 on the strips 1, 3 in combination with a mark 10 on the strip 2 enable the device to be used as a protractor in the equilateral triangle arrangement. Catch members may be provided to hold the strips in line for use as a ruler. According to the Provisional Specification the strips may be telescopic.
Patent GB-286869-A (GB)
Title: Improvements in ironing and calendering machines
IPC: D06F67/04
Filed: 1927-02-26
Abstract: 286,869. Pomfret, R., and Corbett, T. H. Feb. 26, 1927. Feeding-arrangements for ironing - machines. -A brush A or other friction element is inserted in front of or in an aperture in the feed-table B or feedapron of a Decoudun or other ironing or calendaring-machine so as to project above the surface of the table to exert a drag on the articles being fed to the machine. The brush may be stationary or may be rotated in a direction opposite to the direction of feed. A manually-operated cam-shaft E may be provided to adjust the vertical position of the friction element, with means to lock it in the adjusted position.