baber/WOPTO huggingface dataset:
Patent GB-1271269-A (GB)
Title: Improvements in or relating to mine roof supports
Inventor: BILLINGTON FREDERICK
IPC: E21D17/02
Filed: 1969-06-05
Abstract: 1,271,269. Advancing mine roof supports. GULLICK DOBSON Ltd. 4 June, 1970 [5 June, 1969], No. 28595/69. Heading E1P. In an advancing mine roof support having a cantilever extension 19 reciprocated by a ram 23 acting on a prop 18 pivotable about a pivot 22 and adapted to urge the member 19 into contact with the roof, the member 19 is provided with a tilting piece 119, see also Fig. 6 (not shown) to accommodate roof irregularities. In a modification, Figs. 4 and 5 (not shown) the member 19 is advanced by a ram which is supported from the underside of the canopy of the main roof support by brackets.
Patent GB-1277724-A (GB)
Title: Monobenzoxazolylstilbenes adn compositions containing same
Inventor: FLECK FRITZ
IPC: C07D263/57
Filed: 1970-06-12
Abstract: 1277724 Brightening macromolecular materials SANDOZ Ltd 12 June 1970 [13 June 1969] 28614/70 Headings C3F C3P and C3R [Also in Divisions C2 and D1] Polymeric materials, e.g. polyesters (in particular polyethylene terephthalate), polyamides (in particular poly-#-caprolactam), polyurethanes, polyolefins (in particular polyethylene and polypropylene), polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, modified polyacrylonitriles, cellulose triacetate, secondary cellulose acetate and polystyrene are brightened by the incorporation of benzoxazolylstilbenes of Formula (1) where the benzene nucleus A is substituted by at least one hydrocarbon radical linked through an oxygen atom and the benzene nuclei A, B, C and D, independently, may be substituted by one or more of halogen atoms and alkyl and alkoxy groups.
Patent GB-833634-A (GB)
Title: Improvements in or relating to electrical resistors
Inventor: DALE AIDAN BRAITHWAITE
IPC: H01C1/14
Filed: 1955-10-07
Abstract: 833,634. Mounting terminals. LOCK ENGINEERING CO. Ltd. Jan. 7, 1957 [Oct. 7, 1955], No. 28651/55. Class 38 (1). The conductor 3 forming the terminal of a wire-wound resistor, is secured to the insulating former 1 by inserting it through a hole 4, bending it so that it lies over the former surface for a short distance and then passing it through hole 5, the end 6 being then bent over and secured to resistance wire 2. Three resistors may be wound on a single former (Fig. 3, not shown).
Patent GB-804902-A (GB)
Title: Neutron shielding material
Inventor: LOCKYER IVO JOSEPH
IPC: G21F1/02
Filed: 1956-09-21
Abstract: Material for moderating and absorbing neutrons from a fast reactor comprises carbon, carbonisable binder and lithium, cadmium, gadolinium, samarium and/or europium.  Amorphous and/or crystalline carbon may be used, for example a graphitic mix, 50 parts dust finer than 100 mesh and 25 parts dust coarser than 50 mesh mixed with 25 parts pitch and/or tar.  This mix is formed into a block, e.g. by tamping layer after layer, and heat treated at about 1000 DEG  C. to carbonize the binder.  Before this heat treatment, 10 parts of lithium fluoride may be added, to provide 0.0455 gms.  Li per cc. and hence a neutron capture cross-section of 0.28 cm.2 per cc.  Or the block of carbon after heat treatment may be immersed in molten lithium fluoride or in molten cadmium.  Lithium sulphate, cadmium fluoride, hydrated cadmium acetate and gadolinium acetate are other examples of suitable compounds.  The material may be used as a shield for a fast reactor or a fast breeder reactor, but a gamma-ray shield is necessary if cadmium is used and if lithium is used the active tritium produced may be extracted.  Blocks may be built to form a wall or the granular material compacted and/or heattreated in situ. To reduce Wigner growth the screen may be maintained at a temperature of several hundred degrees Centigrade.
Patent GB-1046631-A (GB)
Title: Improvements in or relating to earthmoving and hoisting machines such as power shovels, cranes or the like
IPC: E02F3/38
Filed: 1963-07-22
Abstract: 1,046,631. Mobile Jib cranes. YUMBO. July 22, 1963 [Aug. 4, 1962; July 3, 1963], No. 28934/63. Heading B8H. [Also in Division E1] The cylinders of piston-cylinder units actuating the boom and tool-carrying arm of an excavator or crane are secured to supporting members by swivel joints whereby misalignments occurring between the boom-supporting structure, the boom and the arm of the excavator or crane when in use are accommodated.
Patent GB-337143-A (GB)
Title: Improvements in a motion picture camera
IPC: G03B35/00
Filed: 1929-09-24
Abstract: 337,143. Fox, W., and Elms, J. D. Sept. 24, 1929. Kinematograph apparatus.-A revolving lens, adapted to make photographic images of equal value in both directions therethrough, is provided in a camera in combination with a shutter which permits two pictures to be taken during each complete revolution of the lens. Instead of a single lens, two or more lenses with a corresponding number of shutter openings may be used to take four or more pictures. In the construction of camera described, the lens 26 is mounted in a. housing 25 carried by a shaft 24 actuated from the handle 44 through the gearing 13, 14, shaft 15, gearing 16, 17, shaft 18, and gearing 22, 23. The gear wheel 22 is formed on a sleeve 19 having a pin-and-slot connection with the shaft 18 and is movable with the yoke 30 carrying the lens housing in guides 32, 33 for focusing. For this purpose the yoke carries a plate 31 which is operated by a rack-and-pinion device and finger-piece outside the camera casing. Alternatively, the lens 45, Fig. 5, may be provided with supplemental focusing lenses 46, 47. Fig. 8 shows the arrangement of two lenses by which four pictures are taken in each revolution.
Patent GB-364545-A (GB)
Title: Improvements in and relating to intermittently acting feeding devices, more particularly for the picture carriers of advertising picture projectors
IPC: G03B1/18
Filed: 1930-09-29
Abstract: 364,545. Optical-projection apparatus ; photographic camera shutters. HOPPE, G., 7, Wielandstrasse, Wenderschloss, C÷penick, Germany. Sept. 29, 1930, No. 29149. [Classes 97 (i) and 98 (i).] An intermittent feed device, more particularly for the picture carriers of advertising picture projectors, is characterized in that the operating means, for instance the armature of an intermittently excited electromagnet, is connected to a rubber or like flexible diaphragm which closes a pump casing and which returns the armature from the open to the closed circuit position at intervals regulated by a valve. As shown in Fig. 1, the electromagnet 9 attracts the armature 11, the arm 19 of which slides on the sleeve 21 until it strikes the collar 24 and separates the contacts 22, 29. The air escaping through the valve 8 may be used for ventilation. The transmission mechanism comprises the rack 12, the toothed segment 15, the pawl 16 and the ratchet 17. The depressed diaphragm 3 lifts the armature 11 until the arm 19 strikes the collar 23 and closes the circuit. The ratchet 18 on the feed shaft 14 co-operates with a pin 40 on a spring 41 mounted on the armature 11 to ensure proper feeding. The endless film is wound in a fixed drum 39 provided with slots 32, 33. Relay-action mechanism comprising a diaphragm and an electric switch is described. The apparatus shown in Fig. 1 may be used for operating the shutter and intermittently feeding the film in a photographic camera.
Patent GB-504105-A (GB)
Title: Improvements in or relating to pistons
IPC: F02F3/00
Filed: 1938-10-10
Abstract: 504,105. Pistons.SULZER FRERES SOC. ANON. Oct. 10, 1938, Nos. 29365 and 29366. Convention dates, Dec. 2, 1937 and Aug. 22, 1938. [Class 122 (i)] Heat flow between the head and ring grooves is limited, e.g. by a part d<1> of reduced cross section, while ribs 15 extending between the head and lateral wall are beaded along the edges extending into cooling medium. The reduced portion may be replaced by a groove filled with heat insulating material and arranged either on the inside or outside of the piston between the head and upper most ring groove. The area of the ribs in contact with cooling medium is at least equal to the sum of the cooling surfaces of the head and of the lateral wall between the head and top ring. A plate 7 closes the chamber for cooling medium which is supplied and discharged through telesoopic pipes 9, 10.
Patent GB-682827-A (GB)
Title: A washer box for use in connection with coal washing installations
IPC: B03B5/20
Filed: 1950-11-30
Abstract: 682,827. Jigs. AUTOMATIC COAL CLEANING CO., Ltd.. and COLLINS, A. Nov. 30, 1950, No. 29407/50. Class 82(ii) In a jig - washer three different motions which are not simple harmonic motions are imparted to a slide valve controlling air pulsations to control air admission, air expansion, and air exhaust. As shown, a roller mounted on a hinged link a connected to a rod f of a slide valve e is displaced by a cam b on a shaft c. The cam face is such that the roller assumes three positions during one revolution corresponding to air inlet d, air expansion d<SP>1</SP>, and air exhaust d<SP>2</SP>.
Patent GB-780702-A (GB)
Title: Improvements relating to detachable insulated connectors for electrical conductors
Inventor: ANDERSON CECIL BROWN
IPC: H01R4/00
Filed: 1952-11-21
Abstract: 780,702. Two-part couplings. LOW & SONS, Ltd., A. Nov. 20, 1953 [Nov. 21, 1952], No. 29425/52. Class 38 (1). A watertight plug and socket connector, particularly for use with welding equipment, is insulated by interengaging sleeves 11, 12 secured to plug and socket contacts 4, 5 by insulating pins 13, 14 respectively, e.g. of " Tufnol " (Registered Trade Mark), the ends of the pins 13A, 14A, being covered by resilient rings 16, 18 snapping into annular grooves 15, 17. A pin 8 in the socket contact 5 co-operates with an annular groove 9 and axial cut-away 10 in the end of plug contact 4 to interlock the contacts 4, 5. The plug is sealed against moisture by the ring 18 which is pressed tightly against the plug mouth, and an annular rib 19 of rectangular cross-section on the socket which is a force fit against the plug. The sleeve portions 11c, 12c resiliently grip the cables to prevent entry of moisture. Specification 780,703 is referred to.
Patent GB-464088-A (GB)
Title: Improvements in and relating to protective circuits
IPC: H01F29/04
Filed: 1936-10-30
Abstract: 464,088. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 30, 1936, No. 29560. Convention date, Oct. 30, 1935. [Class 38 (v)] [Also in Group XXXV] In conjunction with a transformer tap-changing switch adapted to operate under load, protective means are provided for the impedance utilized for carrying the load current during the tap-changing operation, a normally-open switch being provided for short-circuiting the impedance, this switch being biassed to its closed position while current-responsive means hold the switch open unless the current through the impedance exceeds a given value for a given time. As shown in the Figure the impedance employed in conjunction with the transformer tap-changing switch 2 may be an ordinary resistance or inductance or as shown may consist of a block 1 of ceramic resistance material known under the Registered Trade Mark " Thyrite " having a negative resistance characteristic. This impedance is connected in series with a tension fuse 10 holding a switch. blade 8 away from a contact 7 against the action of a spring 9. Normally the fuse 10 can carry the line current during the period of time required for an ordinary tapchanging operation but if for any reason the switch 2 stops in an " off " position, i.e. midway between two contacts, the current flowing through the impedance and fuse melts the latter, allowing the switch 8 to close and shortcircuit the impedance. The closing action of the blade 8 rapidly increases the distance between the severed ends of the fuse, so preventing sustained arcing between these points. To protect the impedance from injury and overheating by relatively low currents of long duration which would not affect the fuse 10, a mass of fusible material 18 surrounds the insulated resistance-securing bolt 12 and in such an eventuality melts, falling down and spreading out so as to interconnect the terminal plates 13 at opposite sides of the resistance block 1.
Patent GB-816498-A (GB)
Title: Centrifugal advance-and-retard device, especially for controlling the timing of the spark or fuel injection in internal combustion engines
IPC: F02P5/06
Filed: 1957-09-20
Abstract: 816,498. Fuel injection pumps. SCHAFER, G., and SCHAFER, O. [trading as HUGELFISCHER G. SCHAFER & CO.]. Sept. 20, 1957 [Sept. 20, 1956], No. 29599/57. Class 102(1). [Also in Groups XXIV and XXVII] In a coupling for controlling the relative angular positions of two coaxial-shafts in dependence on their speed of rotation, for controlling the timing of the fuel injection in internal combustion engines, and of the kind employing two or more centrifugal weights 8 co-operating with eccentrics each weight engages a pin 7 eccentrically mounted on a single associated adjuster eccentric 4 and this adjuster eccentric forms part of the driving connection between the two relatively adjustable members of the coupling, the adjuster eccentric being mounted for rotation in one member 3 and carrying through the medium of a compensating eccentric 5, mounted within the adjuster eccentric, a pin 6 engaging the other member 1 of the coupling, this pin being separate from that engaged by the centrifugal weights.
Patent GB-172823-A (GB)
Title: Improvements in leg and hand guards for players such as footballers and cricketers
IPC: A63B71/16
Filed: 1920-10-20
Abstract: 172,823. Mounsey, J. T., Prior, J. J., and Reeve, T. Oct. 20, 1920. Guards for frames.-Pneumatic leg and hand guards for cricket and football players are provided with air chambers which can be readily detached from the guards. As shown, a legguard for cricketers comprises pneumatic tubes b, Figs. 1 and 6, located within pockets formed in a leather or like body a. The upper and rear portion of the body is formed with openings f for the inflating-pipes d of the tubes, and is lined with leather c. The pipes are closed by means of strings. or rubber rings and covered by a flap which is laced to the eyelets e, Fig. 4 on the body. The lower part of the body in lined with leather c and provided with eyelets e so that the bottom of the body may be closed by lacing after the tubes have been inserted.
Patent GB-534778-A (GB)
Title: Improvements in or relating to ionic discharge tubes having a supply of mercury arranged separately from the discharge space
IPC: H01J17/26
Filed: 1939-11-08
Abstract: 534,778. Thermionic valves. MULLARD RADIO VALVE CO., Ltd. Nov. 8, 1939, No. 29671. Convention date, Nov. 11, 1938. [Class 39 (i)] In a rectifier or like device containing mercury vapour the vapour is supplied from mercury contained in a vessel outside the discharge space and separated therefrom by a porous or like partition such that the aggregate area of the passages in the partition is sufficient to allow the vapour to pass through with sufficient rapidity, but liquid mercury is excluded. The partition is preferably of sintered glass or ceramic material and is of such material that the time for the requisite amount of vapour to pass is greater than that necessary for heating up the tube, and of such size that even if the mercury is resting on it there is sufficient space for the passage of the vapour. The Figure shows a rectifier tube of glass sections 11 ... 16 and metal sections 6 ... 10. The section 16 has an extension 17 with a porous partition 19, behind which is the mercury 19. The anode 20 is of cylindrical form with openings 21 and a closed bottom to prevent solid matter from falling on to the partition 19. The temperatures may be 20-40 C and the pressure 1-6 microns. Specification 456,613 is referred to.
Patent GB-1499068-A (GB)
Title: Process for oxidising naphthalene with oxygen
IPC: C07D307/89
Filed: 1976-07-16
Abstract: 1499068 Oxidation of naphthalene BAYER AG 16 July 1976 [19 July 1975] 29723/76 Heading C2C Naphthalene is oxidized, to yield mainly 1,4- naphthoquinone and phthalic anhydride, by passing a gas mixture containing (by volume) 1-5% of naphthalene, 1-10% of oxygen, 1-12% of steam, 0-12% of carbon dioxide, 0-3% of carbon monoxide and inert substances to make up to 100% over a fixed bed catalyst which contains vanadium at a flow rate of 0À6- 5 m./sec. (based on the empty reaction space), a residence time over the catalyst of, on average, 1-9 seconds (based on the empty reaction space), at 250-500‹ C. and under elevated pressure, the reaction conditions being such that the oxygen conversion is less than 90% and the naphthalene conversion is less than 80%. The reaction may particularly be effected in a tube reactor, the tubes of which may be filled with the catalyst but preferably contain inert solids such as porcelain spheres in the region of entry of the feed gases to provide pre-heating of these gases. The tubes may be contained in a jacket filled with a salt melt and provided with a cooling coil and with electrical heaters. The catalyst can additionally contain Si, O, S and alkali metals or may contain organic sulphur compounds to delay decrease in activity. Alternatively, H 2 S or SO 2  may be fed in with the feed gases. The reaction gases may be fed to a cooling system for pre-cooling and countercurrent recovery of a part of the heat of reaction and thence to a two-stage quenching system for condensation of 1,4-naphthoquinone and phthalic anhydride.
Patent GB-298910-A (GB)
Title: Process of and apparatus for obtaining solid carbon dioxide
IPC: C01B32/55
Filed: 1928-10-15
Abstract: 298,910. Hessling, W. Oct. 15, 1927, [Convention date]. Solidifying - Liquid carbon dioxide is expanded in successive stages first to a pressure slightly below the triple point pressure and then to atmospheric pressure in another vessel, the gas evolved in the two stages being drawn off and in some cases used to cool the dioxide before its expansion to just below the triple point pressure. The gas is compressed in a cylinder 2 and further compressed in a cylinder 4; it is then cooled by water and liquefied in a condenser 5 and expanded through a valve 7 into the vessel 8 at just below the triple point pressure. The gas formed is returned to the second stage compression cylinder 4, and the solid is conveyed by a device 10 to a chamber 11 at about atmospheric pressure. The gas formed in this chamber is returned to the first stage compression cylinder 2. The expansion to just below the triple point pressure may take place in stages. When the gas is generated under pressure, the compression cylinder 2 may be omitted, the gas from chamber 11 being returned to the generator. The Specification as open to inspection under Sect. 91 (3) (a) states that the expansion may take place in a turbine or piston engine. This subject-matter does not appear in the Specification as accepted.
Patent GB-937241-A (GB)
Title: Improvements in signal translating devices
IPC: H01L27/00
Filed: 1960-08-29
Abstract: 937,241. Solid state devices. W. SHOCKLEY. Aug. 29, 1960 [Sept. 9, 1959], No. 29775/60. Class 37. [Also in Group XL (c)] A solid state device comprises two current paths separated by a carrier-free zone which prevents interchange of current carriers but allows phonon momentum generated by current flow in one path to be communicated to the other. In one example (Fig. 4) thin layers 14, 15 of P and N-type material, respectively, are formed by diffusing acceptors and donors successively into a block of silicon or germanium, masking, and etching away the unwanted parts of the resulting layers. The phonon coupling is through the space charge layer of the PN- junction, the thickness of which is controllable by an independent bias voltage. The layers 14, 15 are comparable in thickness to the phonon mean free path length. When an input voltage is applied along layer 15 the collisions of electrons with phonons causes the latter to drift in the same direction as the electrons and, if the electron density is sufficient or the temperature low enough, at the same velocity. A proportion of the phonons diffuse through the space charge layer and impart momentum to holes in layer 14 to set up a voltage gradient therein. In an alternative arrangement the input and output paths are layers of heavily doped P material separated by a near-intrinsic N layer. Unproductive loss of phonon momentum occurs in these devices due to collisions with the outer surfaces of the layers and by loss of phonons into the support body in Fig. 4. This loss is reduced in the Fig. 5 arrangement comprising a rate grown multiple sandwich body in which all the N zones are interconnected at one pair of opposite corners by a diffused N layer 18, and the P zones by diffused P layers 17 at the other corners. The length to breadth ratio is so great that the input and output paths are substantially parallel. If the devices are so designed that the space charge layer thickness can be increased by biasing to a point where phonon interchange ceases they may be used as current choppers to produce A.C. from D.C. or as A.C. amplifiers. In the former the D.C. is supplied to one of the layers and a high amplitude A.C. used to bias the PN junction or intrinsic layer. In the latter a heavy direct current is passed through one layer and the input A.C. used to bias the junction or intrinsic layer. A number of the devices may be used as a D.C. transformer by connecting their input layers in parallel and output layers in series. A unitary device for use in this application is shown in Fig. 9 with a semi-conductor base, common diffused P-type layer 37, and interconnected strips of N material 38, formed by diffusion through a mask used as input layers. A further embodiment, Fig. 11, comprises an insulating base, evaporated layer 22 of silicon or aluminium, insulating silica or aluminium oxide layer, and metal layer 201.