baber/WOPTO huggingface dataset:
Patent GB-1434592-A (GB)
Title: Aircraft
IPC: B64C29/00
Filed: 1973-02-21
Abstract: 1434592 Controlling aircraft BRITISH AIRCRAFT CORP Ltd 13 Feb 1974 [21 Feb 1973] 8599/73 Heading B7G [Also in Division F1] A S.T.O.L. or V.T.O.L. aircraft has a jet lift engine and a jet propulsion engine having thrust restoring mechanism adjustable to provide lift, the engines being disposed so that their lift thrust moments act in opposition to one another about the aircraft C.G. position and control mechanism for transmitting thrust demands to both engines, said control mechanism including modifying means responsive to changes in direction of the propulsion engine thrust vector and/or aircraft motions resulting therefrom to so modify the thrust demand of the engines relatively to one another that the lift thrust moments of the engines substantially balance irrespective of the direction of thrust of the propulsion engine. The control system may be electrical, or mechanical as shown in Fig. 2, wherein in a S.T.O.L. aircraft both lift engine 1 and propulsion engine 2 have their thrust demands transmitted from a single pilot's control lever 10 through a rod 11 to a bell-crank 13 and thence through rod 15 to a thrust demand modification device 16, a rod 17, bell-crank 18 and a rod 19 to a thrust demand input unit 20 connected electrically to the throttle device on lift engine 1. The thrust demand is also transmitted through bell-crank 13, rod 22, a mechanism 23, rod 24, thrust demand modification device 25 (similar to device 16) and a rod 26 to an input unit 27 connected electrically to the throttle device on propulsion engine 2. The mechanism 23 and device 25 associated with the propulsion engine would be unneccessary in a V.T.O.L. aircraft. The thrust deflecting nozzles 8 of the propulsion engine are actuated by a motor 28 controlled through rod 29 from a pilot's control lever 30 and a signal responsive to the angular setting of the nozzles is transmitted to device 16 associated with the lift engine through rotating shaft 31, transmission mechanism 32 and rods 33, 35, 37. The angular setting of the nozzles is also transmitted from mechanism 32 to the mechanism 23 and device 25, both associated with propulsion engine 2 by means of rods 38, 40 and rods 41, 43 respectively. The device 16 serves to transmit the demand from thrust control level 10 wholly to engine 2 when the nozzles 8 are directed for forward thrust without a lift component and to progressively increase the demand to lift engine 1 as nozzles 8 are moved between horizontal and vertical thrust settings. The mechanism 23 reduces the thrust of the propulsion engine when the efflux is directed downwards at an angle greater than 43 degrees from the rearwards direction without affecting the demand transmitter to the lift engine. This may result in the propulsion engine throttle becoming closed before lever 10 is moved to the closed position and a correction for this is provided by device 25. Other embodiments (Figs. 8 and 9, not shown) comprise electrical control systems.
Patent GB-480633-A (GB)
Title: Improvements in or relating to filtering apparatus
IPC: B01D25/12
Filed: 1937-03-30
Abstract: 480,633. Filter - presses. SEITZWERKE GES. March 30, 1937, No. 8973. Convention date, May 6, 1936. [Class 46] The end plates of a filter-press are formed hollow to provide air chambers 123, 124, which take up shocks due to a pump 115 which forces the liquid into the press. As shown the pump is fixed to a flange on one end-plate and delivers the liquid through a pipe 117 to the lower part of the chamber therein. It flows through a passage 125 to spaces formed by alternate plates and filtrate is collected by a passage 128. To reduce weight frames may replace alternate plates. The invention is stated to be especially applicable to portable presses as described in Specification 478,098.
Patent GB-1425504-A (GB)
Title: Indexing tabs for filing systems
IPC: B42F21/06
Filed: 1973-02-23
Abstract: 1425504 Index tabs TWINLOCK Ltd 24 Jan 1974 [23 Feb 1973] 8980/73 Heading B6E An index tab for suspension filing folders 30, Fig. 8, and movable to one of three possible viewing positions defined by three sets of holes 39, comprises a bar 1, Fig. 5 from which extends a tab 21 and spaced therefrom and parallel thereto three tabs 17, 22, the tab 17 being provided with a pivotal pin 18, Fig. 13, so that the bar can pivot into abutiment with the folder edges 41, 41a, and the selected pivotal position is locked by pins 24, in equidistantly spaced tabs 22 engaging their respective holes 39. Holes 39 and pins 24 may be replaced by friction pads (56, Fig.11). The tab may be provided with a label receiving channel 6 and the limb 2 of the channel may be transparent and provided with a magnifying lens. In the modification the label supporting surface 52 is associated with a slidable cover (not shown) fitting in grooves 53 and having a transparent and magnifying window.
Patent GB-719813-A (GB)
Title: Improvements in or relating to control arrangements for electric locomotives
IPC: B60L9/28
Filed: 1952-04-09
Abstract: 719,813. Control of motors. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. S. April 9, 1953 [April 9, 1952], No. 9092/52. Class 38(3) [Also in Group XXXV] In a traction system, a transformer 13 is connected to a single-phase source and supplies a phase converter machine 15 having star-connected primary windings adapted to produce a threephase output. A direct-current generator 16 is driven by the machine 15 and supplies a motor 20 which, in turn, drives a frequency converter 21 having its stator windings connected to the output circuit of the phase converter. The output of the machine 21, the frequency of which is dependent upon the speed and direction of the motor 20, is supplied to traction motors 25 of the polyphase induction type. The field excitation of the generator 16 is controlled by a double potentiometer 31, 32, so that the generator can be varied from full excitation in one sense through zero to full excitation in the opposite sense by movement of an arm 34. The machine 15 is started from the single-phase supply by connecting a resistor 36 between a secondary winding terminal of the trans-, former 13 and one of the stator terminals of the phase converter, whilst another of the stator terminals is connected through two of the stator windings of the machine 21 to the same terminal of the secondary winding, and the third stator terminal is joined directly to the other end of the secondary winding. The machine 15 is thus started as a split-phase induction motor. As shown, when the phase converter has run up to speed as an induction motor, it is brought into synchronism by the application of direct current to its rotor winding by closing switch 37, a switch 38 being operated to short-circuit the resistor 36 and to interconnect the three phase terminals of the machine 15 and 21. The machine 15 may be of the asynchronous type, however.
Patent GB-808514-A (GB)
Title: Improvements in or relating to apparatus for testing engines
Inventor: BROWN DAVID MORRIS
IPC: F01D21/00
Filed: 1956-03-23
Abstract: 808,514. Jet propulsion plant. ROLLSROYCE Ltd. May 29, 1957 [March 23, 1956], No. 9229/56. Class 110 (3). Apparatus for testing jet propulsion engines under simulated forward speed and altitude conditions comprises a diffuser into which the engine exhausts through a jet nozzle so as to produce a sub-atmospheric pressure at the outlet plane of the nozzle and a recirculating circuit comprising a duct connected to the diffuser to receive hot gases therefrom which leads to mixing means where the hot gases and atmospheric air are mixed and then delivered into the engine intake. The jet propulsion nozzle 15 of the jet engine 10 is enclosed by a sheet metal casing 16 connected to the inlet end of a diffuser 17 discharging to atmosphere. A duct 20 is connected to a diffuser 17 at approximately its mid-length. The duct 20 discharges through a number of smaller ducts 23 into a mixing duct 24 connected to the engine intake, which duct mixes the hot gases with atmospheric air. An outlet duct 21 controlled by a slide valve 22 controls the amount of hot gas supplied to the mixing duct. The engine 10 is surrounded by wall 27 to form a chamber which is connected by passages 28 to the mixing duct 24 and by passages 29 to the casing 16 surrounding the propulsion nozzle 15. This allows a flow of ventilating air over the engine. Vent pipes, breathers and the like 30, 31, 32 may be connected by a duct 33 to the interior of the casing 16. Injectors 34, 35, operated by compressed air from the engine, may also be provided if required. A cowling 38 round the engine is vented by a pipe 39. The ratio between the intake and exhaust pressures may be varied by varying the position of the nozzle 15 in the casing 16 or by introducing losses in the mixing duct 24 or by both these means.
Patent GB-394452-A (GB)
Title: Improvements in control surfaces of aircraft
IPC: B64C13/00
Filed: 1932-03-31
Abstract: 394,452. Aircraft control surfaces. A. T. S. CO., Ltd., 5, Clement's Inn, Strand, London, and MARTIN, B. L., St. Wulstans, Warlingham, Surrey. March 31, 1932, No. 9250. [Class 4.] Aircraft control surfaces have as their main structural element a spar with three or more longitudinal booms connected together, the connections in two or more planes comprising lattice bracing, the spar forming the forward portion of the component and having the covering of the component directly bent around two or more of the booms. Fig. 1 shows a balanced aileron of the Frise type having a triangular spar comprising booms 2, 3, 4 connected by transverse booms 11 and diagonal bracing members extending in longitudinal planes. The booms are of open U-section with out-turned lips 9, 10 at edges within the section and in-turned lips 5 .. 8 where the edges lie along the surface. Ribs 13 are attached to members 11. In an application to a balanced elevator, Fig. 3, a quadrilateral spar is used having three booms similar to those of Fig. 1 and a rear tubular boom 19 carried by ball-bearing hinges. A transverse bracing member 24 is fitted at hinge points, at the inner end of the spar and at the point where the spar commences to taper to its outer end. The surface may be hinged at its inner corner 16 in which case the other three booms are equally spaced from that carrying the hinge. In small components the spars may be made from sheet metal lightened and stiffened. Specifications 286,471, [Class 43, Fastenings, Dress], and 378,617, [Group VII], are referred to.
Patent GB-141056-A (GB)
Title: Improvements in rotary grates for furnaces
IPC: C10J3/34
Filed: 1920-03-31
Abstract: 141,056. Lambot, J. April 3, 1919, [Convention date]. Grates; ash-pans.-A rotary grate 1 for a gasproducer or furnace is provided with projections 2 which serve to agitate the fuel bed and break up clinker. The grate is supported on the rotary ash-pan 8 which is mounted on rollers 13. Ashes are removed by a scraper (not shown), attached to the wall 5. Air or steam supplied to the grate through the hollow shaft 9 is delivered to the fuel bed through apertures 3 arranged in the rear walls of the projections 2.
Patent GB-128243-A (GB)
Title: Improvements in or relating to Ordnance Breech Mechanism.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41A3/08
Filed: 1917-06-28
Abstract: 128,243. Dawson, Sir A. T., and Buchham, Sir G. T. June 28, 1917. Ordnance breech mechanism.-Relates to the type in which the breech-screw carrier is provided with a crank-shaft for unlocking the breechscrew as described, for example, in Specification 6739/12, and consists in providing means whereby the crank-shaft can be removed from the carrier without dismantling any other parts of the breech-mechanism. Fig. 1 shows a rear view of the carrier with the crank-shaft B keyed to a sleeve D integral with, or attached to, the handlever B<1>. These parts are rotatable within a bearing-sleeve C mounted between a shoulder b on the crank-shaft and a shoulder d on the sleeve D. The crank-shaft and the two sleeves D, C, held together bv a nut b<1>, may therefore be introduced as one unit into a hole in the carrier A and they are retained by a pin c engaging a depending lug on the sleeve C.
Patent GB-417454-A (GB)
Title: Improvements in and relating to methods of producing photographic emulsions, and apparatus therefor
IPC: B01F3/08
Filed: 1933-03-28
Abstract: Refers to Specification 417,453 and consists in first preparing a dispersion of a light-sensitive substance, e.g. silver halide, in the presence of little or no binder, and then dispersing the substance in the binding medium, e.g. gelatine, mechanical vibrations being applied during the preparation of the substance or during emulsification, or both.  The mechanical vibrations, which may be within the range 10--10<7> cycles per second, are produced by a plate, diaphragm, &c., vibrated directly or through transmission mechanism and preferably at resonance frequency, the vibrations being transmitted to the substance or emulsion either directly or through an intervening medium.  For high frequencies, <PICT:0417454/III/1> <PICT:0417454/III/2> the plate &c. is vibrated by electromagnetic means; for very high frequencies, a piezo-electric oscillator is employed.  The effect may be increased by the application of an alternating electric field, or heat.  Fig. 2, shows apparatus comprising a quartz plate C, connected by leads C<1>, C<2> to an oscillatory circuit, housed in a container D within which is a vessel G containing the substance, the vibrations being transmitted through oil J.  A heater plate K is provided.  In a modification, the quartz plate forms the bottom of the vessel.  Fig. 4 shows a further modification in which the substance is contained in a vessel G<11> closed by a diaphragm M<11> vibrated by an electromagnet P<11>.  The vessel is heated by a liquid jacket J<11> fitted with electric heating wires T<1>.
Patent GB-208071-A (GB)
Title: Improvement relating to kinematograph projection apparatus
IPC: G03B35/00
Filed: 1923-04-05
Abstract: 208,071. Tacey, R. G. H., Stobart, P., and Skee, W. A. April 5, 1923. No Patent granted (Sealing fee not paid). Kinematograph apparatus.-In a projector, reflecting surfaces are provided on the usual shutter, or on an additional revolving carrier between the shutter and the lens, and are so disposed as to reflect the whole or part of the light rays back to the lens. As shown, the shutter comprises a rim a attached by radial arms b to a central disc c, and has opaque, semi-opaque, or coloured sectors f and open sectors g. Mirrors j are clipped or otherwise fastened to the arms b and may be plane or slightly concave. Alternatively, the arms b may be made of reflecting material. The mirrors may be all in one plane or some may be in the plane of the shutter and others in two planes respectively nearer to and farther from the lens.
Patent GB-1483945-A (GB)
Title: Packaging and storing of goods
IPC: B65D19/08
Filed: 1975-03-06
Abstract: 1483945 Post pallet AIRFLEX CONTAINERS Ltd and C D D HICKEY 25 Feb 1976 [6 March 1975] 9435/75 Heading B8H A pallet comprises an impermeable base 10 and four posts 21 mounted in guides 20 for movement between a position wherein the lower ends thereof protrude beneath said base to raise the same from the ground and a position Fig. 1 (not shown) wherein the lower ends of the posts are disposed above the base to allow the pallet to be conveyed on a roller or ball surface. When the posts are in the upper position the guides may recieve the upper ends of the post of a lower pallet. The pallet also includes an impermeable cover 14 sealable at its periphery by an inflatable tube 17 locatable within a slot 15 form integral with the base. The envelope created by the base and the cover may be evacuated or inflated through a valve (32). The base may be made of metal and a conductive screen secured under or over the impermeable cover to screen goods on the pallet.
Patent GB-431282-A (GB)
Title: Improvements in stabilising devices for vehicles
Inventor: MARTIN-BINACHON JEAN
IPC: B60G9/00
Filed: 1934-03-26
Abstract: 431,282. Vehicle spring-suspensions. BINACHON, J. MARTIN-, Pont-Salomon, Haute-Loire, and ETABLISSEMENTS M. HOUDAILLE, 50, Rue Raspail, Levallois Perret, Seine, both in France. March 26, 1934, No. 9454. Convention date, March 29, 1933. [Class 108 (ii)] In a stabilizing device for vehicles of the kind in which the means for supporting the chassis C on the axle E comprises systems of jointed levers a, b, c, and f, g, h, associated with shock-absorbers A, A<1>, the jointed systems on the opposite sides of the vehicle are inter-connected either as shown in Fig. 1, by a pair of parallel links ad, fi, and an intermediate rod di, or by equivalent mechanism, such mechanism being given a certain degree of flexibility and exerting a positive stabilizing effect. The links, for example, may themselves be flexible, or may have metallic or hydraulic springs associated therewith. In the arrangement, Fig. 1, the links ad, fi move rigidly with the levers ab, fg, and the shock-absorbers are disposed at the points a, f. Other arrangements are described in which the shock-absorbers are located at the points b, g or c, h, and in which double armed levers pivoted at the points a, f have their extremities inter-connected by parallel or crossed levers. In another modification, Fig. 5, resilience is incorporated in the stabilizing device by interposing springs r, r<1> in cables passing round pulleys p, pl at the points a, f and connected to the axle at c, h and to the jointed systems at the points b, g where the shock-absorbers A, A<1> are mounted. The Specification as open to inspection under Sect. 91 also comprises modifications which have been made the subject-matter of divisional application 431,308. This subject-matter does not appear in the Specification as accepted.
Patent GB-1450301-A (GB)
Title: Clutches
IPC: F16D11/10
Filed: 1974-03-01
Abstract: 1450301 Positive clutches MAAG GEAR-WHEEL & MACHINE CO Ltd 1 March 1974 [2 March 1973] 9486/74 Heading F2C In a positive clutch for a turbine-generator unit wherein an axially slidable clutch sleeve 5 has teeth 6 in permanent engagement with teeth 3 on an input shaft 1 and helical teeth 17 engageable with similar teeth 16a on an output shaft 10, the output shaft 10 is moved axially during final clutch engagement by the torque responsive axial force generated by the helical teeth 16a, 17 to bring an end surface 18 thereof into frictional engagement with a similar surface 19 of the input shaft 1. The output shaft 10 is biased away from the input shaft 1 by a spring 15 or by an hydraulic or pneumatic ram. Axial movement of the clutch sleeve 5 is limited by engagement of abutment surfaces 4, 8 on the input shaft 1 and a flange 7 fast with the sleeve 5. On overrun the axial force generated by the helical teeth 16a, 17 automatically disengages the clutch. In Fig. 2 (not shown) the interengageable surfaces 19, 18 on the input and output shafts 1, 10 are conical. In Fig. 3 (not shown) the toothed connection 3, 6 between the input shaft 1 and clutch sleeve 5 comprises helical teeth.
Patent GB-610123-A (GB)
Title: Improvements in or relating to cinematograph projectors
IPC: G03B1/50
Filed: 1946-03-27
Abstract: 610,123. Kinematograph projectors. HARPER, M. March 27, 1946, No. 9504. [Class 97 (i)] Sprockets for normal 16 mm. film are driven by reduction gearing from the sprockets of a 35 mm. film projector. The 35 mm. film sprockets may be detachable for replacement by special sprockets for special 16 mm. film described in Specification 508,795 which is fed at the same speed as 35 mm. film. The gate is interchanged to suit the film in use. As shown, each of the 35 mm. film sprockets 18, 14, 22 has associated with it, and driven by reduction gearing, 16 mm. sprockets 51, 45, 54. Common pressure members 50, 58 are situated between the pairs of continuously running sprockets. Rollers 17, 52, 53, 55, 21 are provided and the film is threaded round those appropriate to the path required to engage the correct sprockets. Either width of film passes round the sound-reproducing unit 15.
Patent GB-645386-A (GB)
Title: Improvements in or relating to refractory materials
IPC: C04B33/14
Filed: 1948-04-05
Abstract: 645,386. Refractories; moulding refractory compositions. ABBEY, A. (American Optical Co.). April 5, 1948, No. 9529. [Classes 22 and 87 (ii)] [Also in Group XXIII] A refractory for heat-dropping glass articles comprises a major amount of a high alumina mineral and a colourant to absorb infra-red radiations which have been heated to a temperature above that required for the heatdropping, but below the fusion or vitrification point of the constituents. The mineral may be partially replaced by refractory plastic clay. Specified minerals include andalusite, kyanite and sillimanite, whilst colourants include green chrome oxide, rouge and manganese dioxide. To aid dispersion of the ingredients in the water before firing, sodium silicate, sodium carbonate, triethanolamine, lignin, morpholine, sodium gallate or tannic acid or mixtures thereof can be added. The plastic mixture is preserved by adding formaldehyde. Firing temperature is 2200‹ F. The refractory may be slip-cast, die-pressed or cast in a mould having movable blocks 11. whereby dimensions of the cast refractory are varied. A metallic band 12 retains blocks in their spaced relation in a retaining block 13. Lips 14 on the band 12 allow refractory to be poured into the mould between the blocks.
Patent GB-622801-A (GB)
Title: Improved windscreen wiper mechanism for vehicles
IPC: B60S1/18
Filed: 1947-04-11
Abstract: 622,801. Windscreen-cleaners. VAUXHALL MOTORS, Ltd., and BIRABEN, H. E. April 11, 1947, No. 9644. [Class 138(i)] Means for driving a pair of windscreen cleaners comprises a flexible two-part cable 12 having the opposite ends of each part respectively fixed and attached to the cranks 10, 16 of the spindles of the arms 3, 4 of the two cleaners, one of such cranks being attached to the source of driving power. The cable 12 comprises a core 11 which is fastened at one end to the crank 10 of one arm 3 and fixed at the other end to a bracket 13 adjacent the other arm 4; one end of the outer sheath 14 of the cable is fixed to a bracket 15 adjacent the arm 3 and has its other movable end attached to the crank 16. Both parts of the cable will transmit thrust and tension so that, by providing some slack between the two cranks, movement of one crank in one direction results in a movement of the other crank in the opposite direction. The arms 3, 4 are driven from a mechanical device 5 by a rotatable shaft 7 carrying a crank 8 which is connected by a link 9 to the crank 10. The source of driving power for the device 5 may be suction, electrical, or mechanical from the engine of the vehicle. The two wipers 3, 4 may be arranged to act on non-planar, V- shaped or curved windscreens.