baber/WOPTO huggingface dataset:
Patent GB-1057363-A (GB)
Title: Improvements relating to the recovery of missiles and other aerial bodies
Inventor: DUNN ALBERT JOHN
IPC: F42B8/24
Filed: 1962-07-23
Abstract: 1,057,363. Parachutes. SHORT BROS. & HARLAND Ltd. July 18, 1963 [July 23, 1962], No. 28291/62. Heading B7G. [Also in Divisions E2 and F3] A missile has a detachable recovery unit housing a main parachute and a pilot parachute, the unit being thrustable clear of the missile to permit the release of the pilot parachute, the release of the main parachute being controlled by a release mechanism responsive to a reduction in the drag on the pilot parachute (Figs. 6-11, not shown). The release mechanism comprises an open-ended cylindrical housing 38 with a cylinder 39 of pressurized gas slidably fitted within and having a compression spring 40 between the rear end of the cylinder 39 and the end of the housing. The rear end of the cylinder 39 is connected to a cord 45 of a pilot parachute by means of a yoke 42, pin 43 and eyelet 44. A resilient latch 47 engages a groove 46 on the forward end of the cylinder to prevent initially forward movement of the cylinder under the action of the spring 40. In operation, the drag of the pilot parachute pulls the cylinder 39 against the spring releasing the latch 47 from the groove 46. As the drag decreases the spring 40 moves the cylinder forward until a diaphragm 49 is punctured by a pin 53 and the gas escapes through ports 52 to deflect a hollow piston 57 rearwardly and then become held by a latch 62 engaging a groove 63. Movement of the piston releases a set of balls 59 previously retaining a swivel pin 32 connected to a releasing strap 61 of the main parachute, movement of the piston releasing the balls to free the swivel pin 32 and also uncover a port 64 down which the escaping gas passes to inflate a floatation bag.
Patent GB-902128-A (GB)
Title: Improvements in or relating to waveguide couplings
Inventor: PERSSON DAVID ROBERT
IPC: H01P1/04
Filed: 1959-08-19
Abstract: 902,128. Waveguide couplings and switches. DECCA Ltd. Aug. 15, 1960 [Aug. 19, 1959], No. 28399/59. Class 40 (8). A coupling between two waveguides is provided with choke grooves and with further grooves or recesses which define the boundaries of the leakage transmission path. The flange 11 of rectangular waveguide 10, Fig. 1, is provided with choke slots 12, 13 preferably one quarter-wavelength deep and arranged one quarter-wavelength from the edge of the waveguide. Further slots 14, 15 also about one quarter-wavelength deep, define the width of the leakage transmission path and confine the leakage energy to a mode similar to the TEM parallel-plate mode. So long as the width of the path is less than one half-wavelength, higher order symmetrical modes are suppressed. The two sets of grooves may cross each other and extend to the edges of the flange (Fig. 2, not shown). The two additional slots 14, 15 may each consist of two portions, each portion extending from an extremity of a choke slot to a point near a corner of the waveguide (Fig. 3, not shown). Fig. 5 shows a symmetrical version of this arrangement for use with a square waveguide 50. The shape of the outer edge of the slots is unimportant. Thus the slots shown in Fig. 5 may be of non-uniform width with the outer edges lying on a circle (Fig. 6, not shown). In the arrangement shown in Fig. 4, the outer edges of the slots 44, 45 extend outwardly to form additional slots 46, 47. In the case of a circular waveguide, the choke slot is circular and the slots forming the leakage path boundaries are arranged radially. The invention may be applied to a waveguide switch of the type having rectangularsection transmission paths 86, 87, Figs. 10 and 11, arranged within a cylindrical rotor 85 and arranged to connect pairs of terminals in a surrounding stator 80. One or more choke slots, e.g. 96, 97, 98, 99, are arranged between the ends of adjacent transmission paths and one or more circumferential slots, e.g. 100, 101, are arranged adjacent the narrow sides of the rectangular sections. The slots may be in either the rotor or the stator or in both. To enable accurate location of the rotor it is provided with a spring-pressed ball (Fig. 12, not shown) adapted to engage recesses in a plate 95 fixed to the cover 88 of the stator.
Patent GB-490574-A (GB)
Title: Improvements in vehicle door catch mechanisms
IPC: E05B65/34
Filed: 1937-10-19
Abstract: 490,574. Automatic catches. PACY, W. K. Oct. 19, 1937, No. 28423. [Class 44] The frame or pillar of a vehicle door carries a press-button for releasing the door catch, the door being caused to spring ajar by means which are stressed when the door is shut. The door carries a pivoted finger 7 held against a rubber pad 9 by a spring 10, the finger 7 having a projection 8. In closing the door, the finger 7 engages a rubber or fibre roller 13 to bring the projection 8 into mesh with a toothed wheel 11 prevented by a spring pawl 12 from rotating anticlockwise. Wheel 11 is carried by a spindle 15 mounted on a lever 17 and is raised when lever 17 is actuated by lever 18 through either the outside or the inside push-buttons 20, 21. When the catch is released, spring 10 makes finger 7 react against roller 13 to cause the door to spring ajar a few inches. The buttons may be provided with locks or interior catches.
Patent GB-1187664-A (GB)
Title: Process for the Production of Plaster
IPC: C04B11/26
Filed: 1967-06-20
Abstract: 1,187,664. Plaster; calcium sulphate. MODULAR PLASTICS (DEVELOPMENTS) Ltd., and A. VAN HAUTE. 17 June, 1968 [20 June, 1967], No. 28434/67. Headings C1A and C1H. An acid free plaster is produced by heating CaSo 4 .2H 2 O, formed as a by-product in the production of H 3 Po 4  from Ca 3 Po 4  rock and H 2 So 4'  CaCo 3  being added before or after the heating. Up to 20% CaCo 3  can be added. Glutin acid K cintrate are optional.
Patent GB-1386265-A (GB)
Title: Beat indicator for an automatic rhythm instrument
IPC: G09B15/00
Filed: 1972-06-16
Abstract: 1386265 Visual indication of beats MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 16 June 1972 [18 June 1971] 28434/72 Heading G5J [Also in Division G3] In an electrophonic instrument in which a pulse generating system 10, 12 feeds an audio section 16, 17, 18 to produce an automatic rhythm, a system 11 gives a visual indication of the beats, giving a distinctive indication of selected beats. In the preferred embodiment a monostable 14 (114, Fig. 2, not shown) delivers current pulses to a filament lamp 13 (113) on every beat, and on the first beat of each bar a transitor switch 15 (115) increases the current pulse height to give a brighter flash. The filament lamp may be replaced by a light-emitting diode, a glow lamp, or an indicating meter. The monostable 14 may be replaced by a Schmitt circuit.
Patent GB-720104-A (GB)
Title: Improvements in or relating to windscreens for motor cycles
Inventor: ROLL HERMAN JAN WALTER
IPC: B62J17/04
Filed: 1951-12-05
Abstract: 720,104. Motor-cycle wind shields. METAL & PLASTIC COMPACTS, Ltd. March 5, 1953 [Dec. 5, 1951; Jan. 16, 1952], Nos. 28466/51 and 1200/52. Class 136(1). A motor-cycle windscreen 1 is supported by two frame members each of which comprises a length of tube bent into U-shape to form a pair of depending limbs 2, 3 of approximately equal length, the screen being secured to the limb 2 of each frame in such a manner that the other limb 3 forms a strut extending rearwardly of and in a vertical plane normal to the plane of the screen, the lower ends of the limbs of each frame member being attached to and braced by a bracket 21 by which the windscreen is secured to the motor-cycle. When the motor-cycle has telescopic forks (Fig. 1), the bracing plates 21 are provided with holes for the passage of the yoke bolts 29 for securing the windscreen to the front forks of the motor cycle. Alternatively, when the motor-cycle forks are non- telescopic (Fig. 3), the plates 21 are provided with clamping brackets 31 for securing the screen to the handlebars 35 of the motor-cycle. Specification 689,793 is referred to.
Patent GB-697803-A (GB)
Title: Improvements in free piston machines, and in particular free piston machines having their pistons moving in opposed directions
IPC: F02B71/00
Filed: 1950-11-22
Abstract: 697,803. Free-piston compressors and gas generators. SOC. D'ETUDES ET DE PARTICIPATIONS, EAU, GAZ, ELECTRICITE, ENERGIE, SOC. ANON. Nov. 22, 1950 [Nov. 30, 1949], No. 28591 /50. Classes 7 (i) and 7 (ii) In an opposed piston-free piston machine (internal-combustion operated gas, generator or compressor) the means for synchronizing the movements of the opposed pistons is constituted by two mechanisms located respectively on opposite sides of the machine each of these mechanisms including two crossed levers 1, 2 each connected through links with the pistons so that one lever 1 is substantially perpendicular to the direction of movement of the pistons when they are at the ends of their outward strokes and the other lever 2 is in this position when they are at the ends of their inward strokes, the first mentioned lever 1 of one of the mechanisms being arranged to operate at least one auxiliary device when the pistons are close to the ends of their outward strokes and the other lever being arranged to operate at least one auxiliary device when the pistons are close to the ends of their inward strokes. A step-up gear may be interposed between one of the levers and its associated auxiliary device. As shown, the lever 1 is made up of two parallel elongated plates secured together by studs 27 and nuts 29. A shaft 12 operated by the lever I operates for instance through a push piece 14 and rod 15 a lubricating device which is thus controlled in accordance with the length of stroke of the free pistons. A fuel injection pump 11 is operated by the lever 2 through a shaft 3 and cam 10. Fig. 4 shows a modification in which a gear wheel 16 or a toothed sector carried by the lever 1 drives a pinion 17 on a shaft 18 carrying a cam 21 which operates a valve 22 of a device for rendering the fuel pump 11 inoperative if the pistons move outwardly beyond the admissible limit. When the valve is open, fluid under pressure raises a piston 25 to render the pump inoperative. Indicators 19, 20 are provided, one to indicate the end of the inward stroke, and one to indicate the end of the outward stroke. The use of levers on the same side of the machine for operating auxiliary devices is stated to result in great simplification. The free piston machine may be of the construction described in Specification 570,438 referred to.
Patent GB-266037-A (GB)
Title: Improvements relating to automatic telephone systems
IPC: H04Q3/00
Filed: 1925-11-13
Abstract: 266,037. Siemens Bros. & Co., Ltd., and Christian, D. A. Nov. 13, 1925. Automatic exchange systems; metering.-In arrangements such as for metering in which battery is connected back over a switch multiple at a definite stage in the connection to operate e.g. a meter, the switch multiple is at all other times directly earthed so that the meter is short-circuited and thereby prevented from operating if an irregular battery connection to the multiple should exist at some other stage. In the system shown, delayed-metering arrangements of the kind described in Specification 200,928 are employed. When the calling subscriber removes his receiver, line relay R completes a circuit for the preliminary selector magnet DM over contacts r1, t1, r2 and wiper C in its normal position. If the first outlet is busy, the test relay T is short-circuited and the magnet DM again operates over wiper C. When an idle outlet is found, relay T operates in series with magnet DM and locks to earth sent back over wiper C. When the called subscriber replies, polarized relay Y prepares a circuit for winding 1 of relay S so that at the next application of battery to lead 12, relay S operates, locks over its winding 2, and prepares a circuit for winding 1 of relay Z. At the next connection of battery to lead 13 relay Z operates and connects metering battery to the fourth wire mw. Relay Z also unlocks relay S which falls back as soon as battery is removed from lead 13. Prior to the operation of relay Z the wire mw is directly earthed to short-circuit the meter M over contacts z1 and after metering a new short-circuiting earth is provided over contacts z2, s2. At the end of the conversation the preliminary selector is returned to normal by a .driving circuit over contacts r2, t4 and wiper D.
Patent GB-242459-A (GB)
Title: Improvements in or relating to the tyres of road vehicles and their manufacture
IPC: B60C7/10
Filed: 1924-11-29
Abstract: 242,459. Bates, Ltd., W. & A., and Healey, J. Nov. 29, 1924. Non-metallic elastic bodies and cores. - An ordinary hard rubber tyre a is formed with spaced transverse apertures in which are secured tubular plugs c of or more resilient rubber. The tyre body may be formed by extrusion, or by building-up on the foundationband b; and the transverse apertures may be formed by drilling. The vulcanizing-mould may be fitted with plugs to maintain the apertures c<1>.
Patent GB-914070-A (GB)
Title: Improvements in and relating to the shoring of underground spaces by means of elements formed of hollow sections
IPC: E21D11/20
Filed: 1959-08-24
Abstract: 914,070. Mine arches; tubular elements. PAURAT, F. W. Aug. 24, 1959 [Aug. 22, 1958], No. 28812/59. Class 20 (2). A shoring element 1 of square section is strengthened by one or more sheet-metal webs 2 and optionally by the insertion of zig-zag or l-seetion members 2a, 2b, and 3 of steel or synthetic material. The square section may be obtained by welding together two l- or U -section elements and the webs 2 may be of zig-zag section or may comprise short lengths alternately perpendicular to each other down the length of the element. The element may be prestressed by deforming the rectangular section prior to welding in the webs 2.
Patent GB-618977-A (GB)
Title: Improvements in or relating to aerial targets or devices adapted to be towed
IPC: F41J9/10
Filed: 1946-09-27
Abstract: 618,977. Aerial targets. BELL, C. S., and C.B. PROJECTIONS (ENGINEERING), Ltd. Sept. 27, 1946, No. 28989. [Class 4] A towed aerial target or the like comprises a body 1 which may be inflatable or constructed of light materials and is provided with horizontal and vertical stabilizers 2, 3 at the rear end which maintain the body in an attitude of minimum drag, substantially the whole weight of the body being supported by the towing cable attached at a point 8 above and slightly in front of the centre of gravity of the body 9. A tubular spar 6 may be provided, to the forward side of which is attached a bifurcated towing cable and to the aft side flat plates 7, pivotally mounted to resemble wings, but having no lift. Means may be provided for releasing a parachute to provide safe descent of the target when damaged by shell-fire, and a pocket is provided at the forward end 10 of the body to house ballast weights. Specification 582,842 is referred to.
Patent GB-1392236-A (GB)
Title: Photosensitive compositions
IPC: C08C19/10
Filed: 1972-06-21
Abstract: 1392236 Photo-resist materials JAPAN SYNTHETIC RUBBER CO Ltd 21 June 1972 [21 June 1971 22 June 1971 1 Oct 1971] 28997/72 Heading G2C [Also in Division C3] Photo-sensitive compositions comprise a cyclization product of a butadiene polymer, a solvent, and a photo-sensitizer and/or photo-sensitive cross-linking agent. In Examples, the polymer is a cyclization product of 1, 2-polybytadiene, 1, 4- cis-polybutadiene, 1,2-1, 4-polybutadiene or SBR; the solvent is toluene, xylene, trichloroethylene tetrachloroethane, carbon tetrachloride or chlorobenzene; the photo-sensitizer is p, p'-tetramethyl-diaminobenzophenone, p, p'-dimethylamino-benzophenone, or benzanthrone; and the photo-sensitive cross-linking agent is 2, 6-di (4'- azidobenzal) cyclohexanone, 2, 6-di (4'-azidobenzal)-4-methylcyclohexanone, azidostilbene, a phenyl azide or azidobenzophenone. The compositions may be coated on to a substrate, e.g. an aluminium plate or a silicon wafer having a silica surface layer; imagewise exposed to electron beams or U./V. radiation, e.g. through a pattern; developed by a suitable solvent, e.g. toluene, xylene or trichloroethylene, to remove unexposed portions thus forming an image; and if desired baking and etching the image, e.g. with hydrofluoric acid. All these steps are illustrated in one or other of the Examples.
Patent GB-1129553-A (GB)
Title: Transition metal carbonyl complexes
Inventor: THOMPSON DAVID THOMAS
IPC: B01J31/24
Filed: 1965-07-08
Abstract: 1,129,553. Transition-metal carbonyl complexes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 June, 1966 [8 July, 1965], No. 29006/65. Heading C2C. Novel bridged dinuclear transition-metal carbonyl complexes in which the bridging ligands are different and one of said ligands contains an electron-donating atom of Group V B  and the other of said ligands contains an electron-donating atom of Group VIB of the Periodic Table of Elements, each of which is coordinated with both transition-metal atoms, are prepared by reacting a transition metal carbonyl with a ligand-forming reagent comprising the appropriate different electron-donating atoms. The reaction is preferably performed in an inert solvent between ambient temperature and 200‹ C., using approximately stoichiometric proportions of reactants. Specified electrondonating atoms are phosphorus and sulphur and suitable transition metals are iron, molybdenum, chromium and tungsten. The novel compounds include those represented by the formulµ where M is a transition metal, A and B are different bridging ligands, n is an integer as required to satisfy the co-ordination requirements of M. One or more but not all of the carbonyl groups of the formula may be replaced by substituent ligands, preferably containing electron-donating atoms. The compounds are useful as catalysts.
Patent GB-750354-A (GB)
Title: Improvements in skips or tubs, particularly for use in mining
IPC: B60P1/24
Filed: 1953-10-21
Abstract: 750,354. Hopper wagons. GUTEHOFFNUNGSHUTTE STERKRADE AKT.-GESOct. 21, 1953 [Nov. 5, 1952], No. 29041/53. Class 103 (4). [Also in Group XXV] A side wall 2 of a truck 1 is pivoted at 8 to a reinforced part of the truck and towards the bottom is connected to one end of a rod 13, the other end having a pin-and-slot connection with a lever 12 fixed to a shaft 15. A cam disc 14 keyed on the shaft 15 has projections adapted to be engaged by a pin 24 on a lever 11. The lever is freely mounted on the shaft 15 and is formed with an elongated slot 34. When the wall 2 is closed the lever 11 is normally in the position 18. To open the wall the lever is drawn out radially to disengage the pin 24 from the projection 30 and is then brought into position 20 with the pin engaging below projection 31, the lever then being pulled upwardly, whereby the rod 13 passes dead centre position with respect to the shaft 15. The wall 2 is then forced open by the weight of material in the truck, and the rod 13 takes up the position 13<SP>1</SP>. At the same time the cam disc 14 is rotated so that the projection 23 takes up a position approximating to that previously held by the projection 31. To close the wall 2 the lever 11 is placed with the pin 24 engaging the projection 23 and is pressed downwardly. If the lever 12 does not rotate fully into the deadcentre position the pin 24 of the lever 11 is then caused to press down upon the projection 31, after which the lever 11 is disengaged and brought into the position 18.
Patent GB-464444-A (GB)
Title: Improvements in optical indicating apparatus
IPC: H03J1/04
Filed: 1935-10-21
Abstract: 464,444. Adjusting wireless apparatus. JALES, F. G., and METCALFE, C. Oct. 21, 1935, No. 29049. [Class 37] [Also in Group XIX] A rod mf, Fig. 8, secured to the tuning shaft b of a wireless receiving set is situated between a source o of light and a translucent rectangular scale a. The light o is vertically above the point of intersection of the rod nf and the axis b and thus the shadow of the rod appears as a vertical line moving parallel to itself across the scale as the shaft b is rotated. A pin p on a disc s attached to the tuning mechanism moves in a slot q of the rod. The light o may be arranged in the same vertical plane perpendicular to the paper as in Fig. 8, but in front of the position shown. The shadow on the scale then appears as an inclined line moving parallel to itself. In a further modification, Fig. 9, the light o, rod ef and scale a are arranged as shown, this arrangement producing the same effect as that of Fig. 8. The scale a of Fig. 8 may be a cylindrical surface having as axis a vertical line parallel to the vertical line through o.
Patent GB-304396-A (GB)
Title: Improved process for coating metallic or non-metallic bodies with rhodium, iridium, and ruthenium
IPC: C23C16/16
Filed: 1927-10-31
Abstract: 304,396. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Oct. 31, 1927. Vacuum tubes.-In a process for coating metallic or non-metallic bodies with one or more of the metals rhodium, iridium and ruthenium, the bodies are heated in an atmosphere containing one or more volatile compounds of the metal or metals, e.g., the carbonyl halogen compounds such as the carbonyl chlorides. The body to be coated is introduced into a vessel containing the coating compound and the vessel is exhausted. The vessel is then heated to about 100‹ C. and the body itself to about 500‹ C. When compounds of more than one of the metals are used, the coating consists of an alloy of the metals the compounds of which are used. Bodies coated with these metals may be used as the starting material for the manufacture of incandescent cathodes which superficially contain electron active material such as an alkaline earth oxide.
Patent GB-992189-A (GB)
Title: Preparation of polymerization catalyst
IPC: C08F36/04
Filed: 1963-07-23
Abstract: 2-Alkyl substituted conjugated diolefins are polymerized to form high cis-1,4 addition polymers using a catalyst formed by contacting titanium tetrachloride with an aluminium trialkyl or aluminium trialkyl etherate in a controlled manner such that the Al/Ti molar ratio at no time exceeds 1.2/1, whilst the Al/Ti molar ratio in the final catalyst lies between 0.8/1 and 1.2/1 A number of suitable aluminium trialkyls and aluminium trialkyl etherates are listed.  In the examples isoprene and 2-ethyl-1,3-butadiene are homopolymerized in heptane solution, the catalyst comprising aluminium triisobutyl and titanium tetrachloride, and the reaction is terminated with isopropyl alcohol.  Other monomers specified are 2-isopropyl-1,3-butadiene and 2-methyl-1,3-pentadiene. The polymerization may be effected in bulk.
Patent GB-305503-A (GB)
Title: Steam engine starting device
IPC: F01B27/06
Filed: 1927-11-03
Abstract: 305,503. Knight, R. F. Nov. 3, 1927. Starting-valves and starting-ports, auxiliary.- A steam or like engine cylinder is provided with supplementary starting-ports at the cylinder ends controlled by an auxiliary distributing-valve worked by an independent gear or partly or wholly by the main valve-gear. In the construction shown in Fig. 1, the main valve 4 is operated from a centre 15, and the auxiliary valve 22 controlling the auxiliary ports 19, 20 from a centre 23. The valves operate at a different phase with respect to the crank. The valve 22 cuts off later than the main valve and preferably as the main valve opens to exhaust. In another construction, the auxiliary valve is arranged in the main chest by the side of the main valve and is operated by an intermediate point on a crosshead-operated combination lever connected to point 17, Fig. 1. Different auxiliary valve actions are obtained from different points on the combination lever. In the construction shown in Fig. 6 wherein an inside admission piston valve 4 is operated by a Walschaert gear, the auxiliary valve 22 is also of inside admission and is connected to a point 30 above or below the point 32 on the combination lever 29. As the main valve cui-off is progressively shortened, the auxiliary port closes earlier and finally does not open when the main valve is the sole control.