baber/WOPTO huggingface dataset:
Patent GB-1174756-A (GB)
Title: Improved Electromagnetic Contactor
Inventor: MIKOLIC CHARLES ROBERT
IPC: H01H15/10
Filed: 1968-04-16
Abstract: 1,174,756. Electromagnetic contactors. ALLIS-CHALMERS MFG. CO. 16 April, 1968 [19 April, 1967], No. 17825/68. Heading H1N. An electromagnetic contactor has auxiliary contacts which are operated through a cam device responsive to movement of a main contact carrier. A box-shaped insulating housing 10 receives the movable contact assembly 11 and is closed by a cover 12 which supports two rows of fixed contacts 30 for co-operation with contact bridges 25 on a contact carrier 20 of the assembly 11. The carrier 20 is secured to the armature 22 of an electromagnet 18, 47 and has legs 21 slidable in guideways 28 of the housing 10. Springs 50 compressed between the cover 12 and arm 53 on the carrier 20 bias the armature and contact carrier to the deenergized position in which cam slots 55 in protuberances of the carrier retain pins 59 on surfaces 71 thereof. When the coil 18 is energized to attract the armature 22 and close main contacts 25, 30 the inclined faces of the slots 55 move the pins 59 to the Fig. 5 position. Each pin 59 projects from an auxiliary contact unit 58 in a transparent insulating casing 70 which has six fixed contacts 76 and up to three contact bridges 85 in a slide 88 from which the pin 59 extends. The fixed contacts 76 have bent terminal ends outside the casing 70 which may be reversed to charge the auxiliary contact arrangement. In the extreme positions of the armature and contact carrier 20, the pins 59 lie in parts 71, 72 of the slots 55 in which the sides are parallel to the direction of movement of the contact carrier so that there is no resultant force on the carrier in these positions.
Patent GB-1508389-A (GB)
Title: Aerodynamic lift enhancing apparatus
IPC: B64C9/20
Filed: 1976-05-03
Abstract: 1508389 High-effect trailing edge flaps BOEING CO 3 May 1976 17912/76 Heading B7G A STOL aircraft has trailing edge flaps 24<SP>1</SP>, 34<SP>1</SP> which nest (phantom lines) during normal flight, are extended as shown for short take-off and landing, and can be adjusted to provide slots (40<SP>1</SP>, 42<SP>1</SP>), Fig. 4 (not shown), in the event of engine failure. The flaps are mounted on interconnected supports 20<SP>1</SP>, 32<SP>1</SP> which are pivoted between the nested and extended configurations by means of a fluid actuator 52. In the extended configuration shown the flaps form a continuous downwardly and rearwardly curved surface which deflects the exhaust stream of an above-wing engine downwardly by the Coanda effect to increase lift. In the event of failure of the engine, slots are provided to increase lift and decrease drag, the slots being formed by rotating the main flap 24<SP>1</SP> anticlockwise about a pivot 28<SP>1</SP>, the movement being effected by means of an actuator 56 and toggle mechanism 54. In an alternative embodiment, Fig. 1 (not shown), the rotation of the main flap is effected with only an actuator (30). A seal (102), Fig. 5 (not shown), may be provided between the tail end of the wing and main flap, and between the tail end of the main flap and the aft flap. An adjustable strut (104) may be provided to raise or lower the aft portion 14<SP>1</SP> of the wing 10<SP>1</SP> to adjust the pressure on the seal.
Patent GB-1030001-A (GB)
Title: Copolymers and their use in compositions
IPC: C08L33/08
Filed: 1963-05-07
Abstract: A composition comprising gelatin and a substantially water-insoluble copolymer of (a) acrylic acid and/or methacrylic acid and (b) at least one alkyl acrylate having 4 to 6 carbon atoms in the alkyl radical.  The copolymers, obtained by conventional processes, are mixed in the form of a hydrosil with an aqueous solution of gelatin. The composition may also contain a silver halide.
Patent GB-515290-A (GB)
Title: Improvements in or relating to control systems for dirigible craft
IPC: G05D1/08
Filed: 1938-06-16
Abstract: 515,290. Auomatic pilots. SPERRY GYROSCOPE CO., Inc. June 16, 1938, No. 17917. Convention date, June 19, 1937. [Class 135] A control system for a control surface of a craft such as an aircraft rudder comprises a servo-motor operating under the control of remote valve means, whereby the surface is moved in accordance with the forces operating on the valve means, and means for directly applying fluid pressure, arising from back pressure on the control surface, to the valve means in opposition to the controlling forces acting thereon, whereby the movement of the control surface is limited. Movement of the craft with respect to a gyroscopic direction indicator 1 causes a semi-circular plate 5 to vary diametrically opposite openings 6, 7 connected respectively to diaphragm chambers 17<1>, 17 and the differential pressure acting on the diaphragms 40<1>, 40 displaces a rod 18 carrying piston valves 19, 20, 21. The valves 19. 21 cover inlet ports 25, 26 for pressure fluid introduced through a pipe 24 and displacement of the valve rod 18 uncovers one or other of the ports 25, 26 to put it intocommunication with one or other of pipes 28, 29 leading to a servo-motor 30, the pipe 29, 28 not so used being connected by movement of the valve 20 with a return pipe 27. A rate-of-turn indicator 11 is coupled in parallel with the direction indicator 1 to co-operate in actuating the valves, cocks 15, 15<1>, 16, 16<1> being provided to determine the relative effectiveness of the indicators. The servo-motor 30 controls a rudder &c. R and the increased resistance of the rudder as it moves further from its normal position builds up pressure in the servo-motor, this pressure acting back. through the conduit 28, 29 to open a ball valve 34 in a passage 33, 35 leading behind the adjacent piston 19, 21 to check further movement of the servo-motor. A bellows communicating with the passage 35 acts as a pressure accumulator to prolong the opposition pressure.
Patent GB-1015055-A (GB)
Title: Improvements in or relating to warp let-off motions for weaving looms
Inventor: GELDER CYRIL
IPC: D03D49/08
Filed: 1962-05-10
Abstract: A warp beam brake 10, 11 is adjustable and quickly releasable from the front of the loom.  The adjustment is provided by a screwed knob which axially displaces a rod 22, pivots a bell crank lever 19 and thus moves the brake rod 15.  The rod 22 passes through a two part cam 28, 32 which, normally, is separated but which by turning a lever 36 can be closed to release the brake.
Patent GB-562150-A (GB)
Title: Improvements in or relating to apparatus for setting up a line of type
IPC: B41L45/00
Filed: 1942-12-18
Abstract: 562,150. Setting type. ADREMA, Ltd., SANDERSON, T. E. F., and MOON, W. R. H. Dec. 18, 1942, Nos. 17974/42 and 5034/43. [Classes 100 (iii) and 100 (iv)] Apparatus for setting up and printing from a single line of type bearing letters or numerals comprises movable type magazines in the form either of rotatable discs or of sliding bars, which are equal in number to the characters in the line and are adjusted to align the required type in each magazine with a slidable support, by which the line is carried from the magazines to the printing position. In one form, the type is contained in holes 9, Fig. 1, in discs 3, which can be rotated either by a remote-control device or by a style 35, which is inserted in depressions in their edges, in order to bring the required type to the lower side of the discs. The discs are held in adjusted position by spring fingers, and a carrier-bar 12 having an abutment 14 at its rear end is then slid through the holes in the discs, so that the abutment 14 drives the types out of the discs and towards the printing position. As the carrier-bar commences to move. the types are compacted between the abutment 14 and a slide 16, which is temporarily locked in position. Further movement of the carrier-bar releases the slide 16, and the line is transferred to the printing position, where it is arrested by a fixed abutment. On the return of the carrier-bar after the printing, the slide 16 remains locked to it until the types are retracted into the discs. The slide is then disconnected to permit the carrier-bar to be withdrawn from the discs. The carrier-bar is operated from a hand-lever through a chain 26 passing over a, sprocketwheel 27. In the second form, parallel rows of type grooved at their lower ends slide on ribs 52, Fig. 9, on a base-plate 51. The ribs are interrupted by aligned gaps forming a trough, through which can slide transversely a carrierbar 54 bearing a series of short ribs, which can form continuations of the ribs 52. The rows of type are slid along the ribs 52 for the selection of one type in each row by sliding bars having downturned ends, which are connected links 64 to setting-bars 61. The bars 61 bear reference characters and are formed with holes, which can be engaged by a style 35 for moving the bars to and fro. Detents in the form of spring- pressed balls hold the type pushers in adjusted position. After the setting of a line, the bars 61 are locked in position by pins on a pivoted plate 71, which enter the holes in the bars 61 from below. If the plate 71 fails to rise, owing to inaccurate setting of the bars 61, the carrierbar 54 is locked by a sliding bar 80. The carrier-bar 54 is operated by a chain 26, which is movable in a guide 87 and is engaged by a pinion 88 turned by means of a knob 89. The pinion engages a stationary chain 90, along which it travels, so as to enable the carrier-bar to be moved more quickly.
Patent GB-707633-A (GB)
Title: Improvements in or relating to optical projection and television systems
Filed: 1948-07-05
Abstract: 707,633. Colour photography and kinematography. MULLER, E. N. July 5, 1949 [July 5, 1948; July 5, 1948; July 5, 1948; April 2, 1949], Nos. 18048/48, 18049/48, 18050/48, 8996/49. Classes 97(1) and 98(2) [Also in Groups XL(a) and XL(b)] A projection system for displaying or presenting the pictorial content of at least two partial images representing or jointly defining different aspects, e.g., colour component images or right-hand and left-hand stereoscopic views - segregates at least one of said partial images into portions disposed between portions of the other partial images to form in effect a " brickwork " or mosaic pattern, the portions or fractions being capable of resolution in the dimension in which segregation is effected. The system is stated to be applicable to colour photography and kinematography.' The decomposition may be effected in two directions and the areas may be reversed, inverted or turned through ninety degrees. The " brickwork " or mosaic is then recombined by banks or arrays of lenses which operate to recombine the areas of the same nature for the formation of negatives for colour printing or for forming superposed colour images for projection on to a viewing screen. As indicated diagrammatically in Fig. 1 (18048/48), the coloured original is projected into an expanded area in which in alternate rows red areas alternating with green areas, and in the intervening rows blue and green areas are interspersed, the areas being produced by a rectangular bank of, for example, 80 lenses correspondingly associated with red, green and blue filters. The mosaic or " brickwork " pattern is reformed for viewing or for a three-colour photographic process by an array of lenses which are arranged to to make the red, blue and green areas individually contiguous, each colour image occupying an identical area so that identically corresponding images in three colours are superimposed and projected on to a large screen for viewing, or separate negatives may be made for a threecolour photographic process. The Specification includes several optical arrangements with single or multiple banks of lenses to reform the coloured image from the expanded mosaic or " brickwork " pattern, and these images may be aranged in a plane, as for example in Figs. 9, 10, 11, 16, 18, 19, 24 (18048/48) (not shown), or on a slightly curved surface as for example, in Figs. 7, 12 (not shown) (18048/48) or Figs. 1, 3 (18049/48) (not shown). The elements of the mosaic may be hexagonal, Fig. 6 (not shown) (18048/48), and segregated coloured areas on the curved surface of a cathode-ray tube may be projected by sets of mirrors to occupy appropriate positions on a viewing screen by sets of reflectors, Fig. 12a (18050/48) (not shown). The lenses of the reforming arrays or banks may be of moulded plastic material. The several optical arrangements with the many minor detailed modifications do not admit of satisfactory abridgment.
Patent GB-120134-A (GB)
Title: Improvements in or relating to Mandrels.
Inventor: BROWN GEORGE WILLIAM
IPC: B23B31/40
Filed: 1917-12-05
Abstract: 120,134. Brown, G. W., and Shillington, A. F. Dec. 5, 1917. Mandrels.-The sections b of an expanding mandrel are moved longitudinally by a nut c with an overhanging flanged portion c<1> engaging an external neck portion b' on the sections. These sections may be driven by keys e, or by studs working in slots, or by balls, rollers, or pawls working in recesses in the mandrel a, as shown in Fig. 6. A helical spring d in a circumferential groove keeps the sections b on the mandrel a. The mandrel may have centres a', or may be held in a chuck.
Patent GB-861423-A (GB)
Title: Improvements in or relating to the coating of regenerated cellulose film
IPC: C08J7/052
Filed: 1959-05-27
Abstract: 861,423. Coated regenerated cellulose film. DU PONT DE NEMOURS & CO., E. I. May 27, 1959 [June 3, 1958], No. 18076/59. Class 140: Moistureproofed regenerated cellulose film comprises regenerated cellulose film impregnated with a thermoset resin and coated with a vinylidene chloride copolymer composition containing maleic anhydride. The film may be produced by applying to a regenerated cellulose film, previously impregnated with a watersoluble partially condensed thermosetting resin, a vinylidene chloride copolymer together with 2 to 10% of its weight of maleic anhydride and further condensing the resin to the thermoset stage. The impregnation may be effected using an aqueous solution containing a softening agent, e.g. ethylene glycol or glycerine in amount of 16 to 18 % by weight of the film, and a watersoluble partially condensed thermosetting resin, e.g. melamine-, phenol-, or urea-formaldehyde, guanidine-urea-formaldehyde, malamine-formaldehyde-polyalkylene polyamine, or aminemodified urea-formaldehyde, in an amount of about 0.5% of the weight of the film. The copolymer may contain 75% or more of vinylidene chloride and may be the copolymer of vinylidene chloride and acrylonitrile, methacrylonitrile, styrene, chloroprene, butadiene, dichlorovinylidene fluoride, methyl vinyl ketone, vinyl acetate or chloride, methyl, ethyl, butyl, isobutyl acrylate or methacrylate, methoxymethyl methacrylate, dimethyl, diethyl or dibutyl itaconate, vinyl pyridine or isoprene. Itaconic acid may also be copolymerized to give three component systems. Specification 684,105 is referred to.
Patent GB-569324-A (GB)
Title: Stamping die for sheet metal articles
IPC: B21D53/24
Filed: 1943-11-02
Abstract: 569,324. Stamping. LIVERMONT, F. W., and LIVINGSTON, R. A. Nov. 2, 1943, No. 18127. Convention date, Nov. 2, 1942. [Classes 83 (ii) and 83 (iv)] Making caps.-External contracting and internal expanding dies, arranged as a subpress mechanism, are described with reference to the production of screw-threads on domed sheet metal blanks partly formed from strip and subsequently detached for completion into closure caps. Discs 23, Fig. 15, with domed portions 22 remain connected in strip form by narrow side portions 24 and have segmental thread sections 20 embossed on or in them by the dies. The lower die assembly has pins 29, Fig. 1, guided in the upper die member 28, which has an internallyconed member 35, Fig. 4, clamped to it with an interposed sole-plate 37 by bolts 38. Die sections 31 are secured to members 33, similar to the jaws of a bevel closing chuck, provided with opening springs 36, and guided at 76 in a cap 40 sliding on the member 35 to effect the closing and opening movements of the dies. The opening movement is limited by the heads of screws 44 located in clearance recesses in the sole-plate and the closing movement is adjustably determined by a ring 45 screwed on the cap 40 and adapted to contact the soleplate. A disc 41 engages the members 33 and confines an opening spring 42 located in a reoess in the sole-plate. An ejector 50 has a light spring 51 under the disc 41 and surrounding an ejector rod 49 passing through the disc and limited as to its forward position by a pin 52 engaging the end of an extension 53. The lower die member 25 supports a fixed member 55 with inclined grooves in which the die sections 30 seat and slide under the control of spring plungers 57 in a cage 58 supported by guide rods 59 having springs 62 on which a member 60 floats below the cage. The member 60 carries an adjustable stop ring 63 and the cage a ring 72. The work is supported in proper position between the open dies by a table 66 supported by rods 67 from a disc 68 slidably supported on an extension of the bolt 56, that secures the member 55, by a spring 69. In operation, the upper die descends until projections 71 contact the table 66, the dome of the blank compressing the spring 51. The table 66 then descends with the upper die till its under surface contacts the stop ring 72, locating both dies correctly relatively to the work. Further descent of the upper die effects contraction of this and the expansion of the lower die, embossing the threads in the work. In a modification, the coned member 35 is replaced by a member with inclined grooves, in which slide shoes carrying the die sections, to provide better contact throughout the range of movement. By relative adjustment of the stop rings, the thread can be embossed either externally or to any intermediate extent between this and entirely internally.
Patent GB-800951-A (GB)
Title: Improvements in or relating to liquid flow control systems
Inventor: BAINES FREDERICK
IPC: B62D5/06
Filed: 1955-06-23
Abstract: 800,951. Regulating delivery of pumps. PLESSEY CO., Ltd. Aug. 15, 1956 [June 23, 1955], No. 18189/55. Class 102(1). [Also in Group XXIX] A reservoir 5 secured to a pump housing 2 supplies liquid to the pump inlet 3 whilst a delivery passage 6 extending through the reservoir 5 is connected to the pump outlet 4 ; in the passage 6 and immersed in the liquid is a spring-loaded valve 7 with a through orifice 7a, which valve controls ports 6a from the passage 6 opening into the reservoir. When the flow rate exceeds a given value the valve uncovers the ports 6a so ensuring a controlled rate of flow to the output union 11. A spring- loaded ball-valve 8 in a passage 8a between the pump inlet and outlet is unseated when the delivery pressure exceeds a predetermined value. A return passage 10 with radial ports 10a is also provided in the reservoir 5, the delivery and output passages being connected in a system applicable to the power assisted steering of vehicles or the operation of auxiliary aircraft-equipment, for example. In a modification, the reservoir and valve unit is separate from the pump.
Patent GB-294469-A (GB)
Title: Improved device for indicating or measuring the level of liquids in containers
IPC: G01F23/16
Filed: 1928-06-22
Abstract: 294,469. Scheel, J. E., Bull, W. H., and Freydorf, R. C. von. July 23, 1927, [Convention date]. Indicators actuated by pressure of head of liquid.-In a device for indicating liquid levels by measuring the pressure necessary to force gas through an open ended pipe dipping into the liquid, the pipe terminates in a chamber from which gas escapes upwards through a conduit having a restricted opening at the top which is below the free surface of the liquid in the container. The dipping pipe 22, Fig. 1, terminates in a chamber 23, and the air escapes through an opening 25 and chamber 24 into the liquid in the tank. An opening 27 communicates with the liquid, and baffles 28 are provided to suppress oscillation of the liquid. The surface of separation between liquid and gas is at the point 25. Several modifications of the chamber 23 are described (Figs. 2, 3 and 4, not shown). The Specification as open to inspection under Sect. 91 (3) (a) describes also devices which include valves in the pipe system interconnected with one another and with the pump mechanism, devices for transmitting pressure to the gauge, and a device for removing condensate from the piping. The gauge 3, Fig. 1 (Cancelled), is constricted at 10, and is connected by pipe 11 to the dipping pipe 2 and by pipe 5 to the upper part of the tank if the pressure in the tank is other than atmospheric. A gas generator 7 is connected to the pipe 11, and also by pipe 6 to the tank. Non- return valves are provided in the pipes. In Fig. 12 (Cancelled), the pump 62 is connected to the dipping pipe 54 through a valve 55 which is coupled to a valve 57 in the pipe 56 connected to the other side of the pump. The pump and valves are operated by a lever 63. Another modification (Fig. 13 (Cancelled), not shown) makes use of a pair of diaphragms subjected to the pressure above the liquid and that due to the depth respectively, the movements of the diaphragms being transmitted through enclosed volumes of gas to the opposite sides of the diaphragm of the pressure gauge. In another modification (Fig. 14 (Cancelled), not shown) a trap for condensate is provided at the lowest point of the piping. The chamber at the lower end of the dipping pipe may be omitted, and the pipe may be closed except for small openings (Fig. 7 (Cancelled), not shown) or it may terminate in a horizontal pipe (Fig. 6 (Cancelled), not shown). This subject-matter does not appear in the Specification as accepted.
Patent GB-1111263-A (GB)
Title: Improvements in or relating to inverters
IPC: H02M1/08
Filed: 1965-04-30
Abstract: 1,111,263. Circuits of controlled non-linear inductors. COMPAGNIE FRANCAISE THOMSON-HOUSTON HOTCHKISS BRANDT. 30 April, 1965 [30 April, 1964], No. 18346/65. Heading H3B. [Also in Division H2] The operative state of a pair of controlled rectifiers Th 1 , Th 2  in an inverter is memorized by devices J 1 , J 2  so that if the D.C. supply A is interrupted and then restored operation will commence in the correct sequence. As shown, J 1 , J 2  are saturable reactors. When Th 1  is conductive the voltages induced in auxiliary windings T 11 , T 12  of the inverter transformer T cause the cores J 1 , J 2  to be saturated in opposite directions. As a result the subsequent control pulse S finds a high impedance through J 21  and a low impedance through J 22 . The directions of saturation are reversed when Th 2  conducts. Cores J 1 , J 2  retain their respective states of saturation when the supply is interrupted so that operation cannot restart on the rectifier which was last conducting. Zener diodes Z 1 , Z 2  and limiting resistors R 11 , R 21 , R 12 ,   R 22  may be provided to limit the feedback signals. Instead of supplying triggering pulses S from a single source they may be supplied separately through windings J 21 , J 22 , the pulse trains being phase displaced with respect to each other. The feedback signals may be derived from the transformer primary windings T 11 , T 12  instead of from auxiliary windings T 21 , T 22 , or the cores of the reactors may be magnetically coupled to the transformer core. Commutating capacitor C causes alternate firing and extinction of rectifiers Th 1 , Th 2  during normal operation.