baber/WOPTO huggingface dataset:
Patent GB-1315700-A (GB)
Title: Gas lasers
IPC: H01S3/139
Filed: 1970-10-08
Abstract: 1315700 Lasers SIEMENS AG 8 Oct 1970 [9 Oct 1969] 47855/70 Heading H1C Maximum output power from a gas laser is maintained by monitoring either the spontaneous emission normal to the laser tube or the current causing the gas discharge, and utilizing one or both of the monitor outputs to axially displace or tilt a resonator mirror or to adjust the gas pressure to compensate for a decrease of laser output power. As shown in Fig. 2, a CO 2  laser tube 1 formed with Brewster windows 2 is positioned between a fixed resonator mirror 5 and a mirror 6 axially adjustable by a transducer 7. Pumping is effected by a high voltage source 9 connected to discharge electrodes 3, 4, the pumping current being monitored by using the voltage drop across a series resistor R to produce a monitor output S1. A photo-cell 10 adjacent electrode 4 detects the transverse spontaneous emission L and provides a monitor output S2. The two outputs S1, S2 are combined at a differential amplifier 11 and control the mirror transducer 7. Alternatively the resonator mirrors are both fixed and the differential amplifier controls the laser tube gas pressure. The D.C. discharge current may have a superposed A.C. ripple.
Patent GB-1453474-A (GB)
Title: Method of electrically charging an electrographic layer
IPC: G03G15/02
Filed: 1973-10-15
Abstract: 1453474 Electro-photography TURLABOR AG 15 Oct 1974 [16 Oct 1972] 47954/73 Heading G2H [Also in Division H1] Prior to use, an electrographic layer is corona charged to a voltage less than the value at which the secondary corona current occurring is at most 10% of the total current flowing to the layer.  Preferably the voltage is less than half of the saturation voltage of the layer in its unused state, and is progressively reduced in proportion to the saturation voltage as the saturation voltage falls with use.
Patent GB-1073958-A (GB)
Title: Improvements in or relating to a method of making sheathed insulated electric cables and an apparatus therefor
Inventor: ESKILSON STURE VIKING
IPC: H01B13/004
Filed: 1963-12-10
Abstract: 1,073,958. Cables. BACKER ELEKTROVAERME A.B. Dec. 10, 1963, No. 48624/63. Heading H1A. [Also in Division H5] A metal-sheathed insulated cable is made by pressing together with rollers 7, 7 over a tube 3 two pre-shaped metal strips 2, 2 which are taken from feed rolls 1, 1 and which have outer welding flanges and an inner semi-circular profile portion. A bare or insulated conductor 6 is fed from a roll 5 down the centre of the tube 3 and a pulverulent insulating material, such as magnesia, is fed into the tube, to surround the conductor, by means of a hopper 4. Below the rollers 7, 7 but before the end 3a of the tube 3, a welding device (8), Figs. 2, 3 (not shown), welds together the flanges of the strips. The cable may then pass through a vibrator, and compacting rolls 10, 10, and it is then coiled on a roll 11. The strips 2, 2 may have more than one semi-circular profile portion between their flanges and more than one conductor 6 may be fed into each portion. Resistive conductors may be used and the cable be applied for heating purposes.
Patent GB-1220802-A (GB)
Title: A viewer for partially sighted persons
Inventor: DAVIES THOMAS EDGAR
IPC: G02B27/02
Filed: 1966-11-01
Abstract: 1,220,802. Reading devices. T .E. DAVIES. Feb.1, 1968 [Nov.1, 1966], No.48853/66. Heading G2J. A receiver 10 for partially sighted persons comprises a magnifying lens 16 adjustably supported over a baseboard 12 so as to enable reading matter 22 to be introduced between the lens and the baseboard. The lens, which may be of hollow construction filled with a liquid such as paraffin, is raised at one end to facilitate reading from a sitting position. It is supported on four studs 14 by means of eight knurled nuts 18. A removable tray 20 may be used to carry the book 22, or alternatively the reading matter may take the form of a scroll supported on a pair of spaced rollers. A light source, e.g. a fluorescent tube, may be employed, positioned between the lens and the baseboard. Side walls having carrying handles may also be provided.
Patent GB-1058218-A (GB)
Title: Headscarf
Inventor: ROSENBAUM JULIUS
IPC: A42B1/24
Filed: 1964-12-01
Abstract: 1,058,218. Headscarves. FRANCAMAC Ltd. Oct. 14, 1965 [Dec. 4, 1964], No. 49395/64. Heading A3V. [Also in Division A4] A fringe 11 of real or artificial hair is detachably secured in a hem 12 along one edge of a headscarf 10 by means of a mounting strip 14 slightly longer than the slot 13 in the hem through which the fringe projects.
Patent GB-1093568-A (GB)
Title: Improvements in or relating to bladed rotors such as compressor rotors
Inventor: HARRISON WILLIAM
IPC: F04D29/32
Filed: 1965-11-23
Abstract: 1,093,568. Compressor rotors. ROLLSROYCE Ltd. Nov.23, 1965, No.49761/65. Heading F1T. The blades 14 in an axial flow compressor rotor stage of a gas turbine engine are mounted in axial slots 17 in the rotor disc 13. A platform segment having a top face 15a with a recess 27 to accommodate the blade root 18 is mounted between adjacent blades 14, the segments abutting to form a complete annular platform. The segments are held in position by engagement of heads 23 of tongues 22 in a circumferential keyway 20 in the disc periphery. Recess 27 does not extend the full axial extent of each top face 15a so that each blade 14 is prevented from moving axially out of its slot 17 in the downstream direction. The platform segments and/or the blades are of synthetic resin material. The segments are assembled one by one through an assembly slot (24), Fig. 5 (not shown), prior to insertion of the blades. A nose cone member (28), Fig. 2 (not shown) completes the assembly.
Patent GB-1495074-A (GB)
Title: Ventilation systems
IPC: F04D25/14
Filed: 1975-12-04
Abstract: 1495074 Ventilators MATSUSHITA SEIKO CO Ltd 4 Dec 1975 [31 July 1975] 49764/75 Heading F4V A ventilator for location in a wall of a building comprises a duct frame 11 of rectangular crosssection, a grill 18 attached to the frame 11 on the outside of the wall, a frame 19 which supports a ventilation fan 20 and its motor and a shutter 21, and a ring frame 26 having a grill 29 attached to the interior of the wall and encircling the blades 27 of the fan 20. In constructing the ventilator on site, for any size of wall thickness, the frame 19 is telescopically inserted into the frame 11 until a flange 28 contacts the inner surface of the wall. Screws 30 hold the frame 19 in place. The blades of the shutter 21 are connected via a lever 22 and a pull string 24 to an electrical switch 25 for the fan motor. A bias spring 23 interconnects the lever 22 and the frame 19 so that the shutter 21 is normally closed. The ventilator is operated by pulling down the string 24 to engage a stop, thereby opening the shutter 21 and also closing the switch 25 to drive the fan and motor 20.
Patent GB-1533866-A (GB)
Title: 3-alkyl-7-oxoalkyl-xanthine derivatives
IPC: A61K31/52
Filed: 1975-12-05
Abstract: 3-Alkyl-7-oxoalkylxanthines of the formula <IMAGE> in which Alk is C1-C12 alkyl, and A is a C2-C6-alkylene radical, are prepared. These compounds are obtained by reacting a 3-monoalkylxanthine alkali metal salt at elevated temperature with an appropriate halo ketone to introduce the group -ACOCH3 in position 7.   The compounds can be used as vasodilators.
Patent GB-1204916-A (GB)
Title: Machine for shaping sheet metal
Inventor: TIERNEY BERNARD
IPC: B21D5/14
Filed: 1967-11-03
Abstract: 1,204,916. Curving. CURTIS ENGS. Ltd. 20 Sept., 1968 [3 Nov., 1967], No. 50070/67. Heading B3E. A machine for bending and shaping flanged sheet metal articles comprises a pair of parallel shaping rollers 10 and 16 driven in opposite directions, the first roller 10 having an end flange 11 and the second roller 16 having an end surface 17, the machine also having a third end flanged guide roller 25 so located that a sheet metal blank, having an edge flange, fed over the guide rollers and through the nip of the shaping rollers, is compelled to follow an arcuate path and is bent with its edge flange, to an arcuate shape, a locator being provided adjacent the end flange of the guide roller to abut the edge flange of the blank to guide the blank by retaining it against the guide roller. The rollers are driven in opposite directions by an electric motor 19 through a gear-box 20 and gearing 21-24. On the inward side of the nip of the rollers is located the flanged guide roller 25 mounted in adjustable bearing blocks 28 movable in slides 30. Locator rollers 34 are mounted on a rod 33 carried by arms 31 on the guide roller shaft 32. The second shaping roller 16 is vertically adjustable by slidable bearing blocks 36 operated by hand wheels by means of screw-threaded bolts 39 engaging screw-threaded bores in bevel gears 41. When a flanged blank e.g. for a vehicle mudguard, is fed over the guide roller 25 into the nip of the shaping rollers 10, 16 the edge flanges of the blank pass between the end flanges 11 of the roller 10 and the end surfaces 17 of the roller 16 thus resisting any tendency for the edge flanges to wrinkle and distort during bending. The flanges 27 on the guide roller 25 and the locator rollers 34 accurately locate the blank whilst it is passing through the shaping rolls.
Patent GB-1169224-A (GB)
Title: Rolling Bearings
Inventor: ZWICKY ALFRED JAKOB
IPC: F16C33/66
Filed: 1966-11-09
Abstract: 1,169,224. Bearings. A. J. ZWICKY. 9 Nov., 1966 [11 Nov., 1965; 6 May, 1966], No. 50125/66. Heading F2A. A rolling bearing has a number of lubrication ducts extending through the outer race. In Fig. 2 a cage 4 is dimensioned to form sealing gaps with races 1, 2 which gaps seal the roller containing pockets in the cage from each other. During operation, pressurized oil is supplied to widened portions of the pockets by bores 6, to support the inner race, and is discharged by bores 7. In Fig. 5 (not shown), the cage forms wedge-shaped compartments with the races facilitating formation of hydrodynamic fluid. In Fig. 6 (not shown), no cage is provided, alternate rollers (13) being cylindrical and having flat ends forming sealing gaps with the races. The other alternate rollers (16) have part-spherical ends (17) thus forming ducts (18) with the races to receive oil.
Patent GB-1124798-A (GB)
Title: Improvements in or relating to mine shaft conveyances
IPC: B66B7/04
Filed: 1965-11-26
Abstract: 1,124,798. Bearings; lubricating. R. W. WORRALL. 13 Feb., 1967 [26 Nov., 1965], No. 50241/65. Heading F2A. [Also in Division B8] A shoe 1 guiding a rope 16 of a mine shaft conveyance 5, comprises a bush 6 in a housing 2 secured to the conveyance, pockets 13, 14 between bush and housing being supplied with lubricant and being connected by passages 19, 22 to the bore of the bush, lubricant flow being promoted by axial movement and rocking of the bush. In Fig. 1, bush 6 is axially movable between flanges 7, 8 and portion 9 is rockable on portion 10 of split housing 2. Lubricant is supplied by a pump or gravity-feed reservoir in the conveyance, to opening 21 in pocket 13, oil leaking from pocket 13 filling pocket 14. On upward movement of conveyance 5, bush 6 moves down into contact with flange 8, and lubricant flows from pocket 13 through upper annular passages 19, 22 to the bore of the bush and rope 16. Rocking of the bush is effected by the rope. On downward movement of conveyance 5 bush 6 engages flange 7.
Patent GB-1005552-A (GB)
Title: Cable or pipe supports
IPC: H02G3/04
Filed: 1963-12-24
Abstract: 1,005,552. Pipe supports. BURNDY CORPORATION. Dec. 24, 1963 [Dec. 31, 1962], No. 50880/63. Heading F2P. [Also in Division H2] A trough system for supporting pipes, cables or the like comprises spaced apart side rails 18, 20, which may be generally L-shaped, with a separate bottom section 10, and is provided with a protective cover 30 of convex arcuate cross-section. The cover is fastened to the rails by means of L-members 36, 38, which are integral with it, and it may be corrugated ciroumferentially and be provided with perforations to assist air circulation. The bottom section 10 may also be corrugated and be perforated and the corrugations and the apertures therein may be aligned with those in the cover (Fig. 4, not shown). The L- members for fastening the cover may be arranged inside it (Fig. 3, not shown).
Patent GB-1032240-A (GB)
Title: Epoxy resin-asphalt compositions
IPC: C08L63/00
Filed: 1963-12-24
Abstract: Curable coating and sealing compositions comprise (1) a polyglycidyl ether of a polyhydric phenol, and (2) a bituminous mixture of an asphalt and a low-volatile, petroleum fraction boiling at a temperature of at least 270 DEG  C. and containing more than 55% by weight of aromatics.  The compositions may also contain a natural or synthetic elastomer.  The compositions are cured by mixing and reacting with a curing agent for the polyglycidyl ether.  Aggregate may be added at any stage before the setting of the mixture of curable composition and curing agent.  Many composition components and conventional curing agents are specified.  The compositions are useful in constructing roads and airfield runways, coating pipes and offshore drilling rigs, making pottings and castings, and laminating paper and as gasket sealing and roofing compositions.
Patent GB-1079860-A (GB)
Title: A control system for a pluratlity of hydraulically operable elements
Inventor: KIBBLE JOHN DUNBAR
IPC: E21F13/08
Filed: 1963-12-24
Abstract: 1,079,860. Advancing mine conveyers. COAL INDUSTRY (PATENTS) Ltd. Dec. 22, 1964 [Dec. 24, 1963], No. 50965/63. Heading F1P. A hydraulic system for controlling the supply and discharge of fluid to double-acting rams 2-12 arranged to advance a conveyer 1 towards a mine face, comprises.a valve 13 associated with each ram (only one of which is shown) each operable independently to cause extension or retraction of its associated ram, and group control valves 15-20 selectively operable to cause extension of a group of rams. As shown, each group has four rams 4-7, 7-10 &c., each ram being connected through a non-return valve 14 or non-return valves 22, 23 to a hose C in which are disposed the group control valves 15-20. The group control valves are arranged symmetrically in pairs to enable the conveyer to be advanced from either end. To advance the conveyer from left to right, group control valve 16 is opened, whereby the section of the hose C between valves 16 and 17 is pressurized from a branch line 21 connected to a pressure main P and hence rams 4-7 commence to advance the conveyer. After the rams 4, 5 and 6 have fully extended valve 16 is closed and their associated valves 13 are operated to cause retraction of the rams and consequential advance of any roof supports secured thereto. The completion of the extension of the ram 7 and the initiation of the extension of the rams 8, 9 and 10 is accomplished by operation of the group control valve 18. In a second embodiment Fig. 3 (not shown) the rams are connected through non-return valves across a pair of hoses and the group control valves are arranged so that they pressurize four rams at a time, two of which have previously been pressurized by operation of the preceding group control valve.
Patent GB-1075809-A (GB)
Title: An apparatus for separating liquid mixtures
IPC: B01D17/02
Filed: 1965-12-07
Abstract: 1,075,809. Centrifugal separators. MITSUBISHI JUKOGYO KABUSHIKI KAISHA. Dec. 7, 1965 [Dec. 7, 1964], No. 51901/65. Heading B2P. An apparatus for separating a mixture of liquids of different specific gravities comprises inner and outer cylindrical containers 1, 2 defining between them a space 4 into which the mixture is fed tangentially or substantially tangentially through a conduit 9 so as to whirl upwardly, as a result of which the lighter liquid flowing close to the inner container 2 is deflected by scoop plates 6 and directed into the container via axially spaced openings in its wall while the heavier liquid is discharged tangentially or substantially tangentially from the space 4 through a duct 10 at the upper end of the outer container 1, a valved pipe 23 being provided to discharge the lighter liquid from within the container 2. As shown, a continuous helical plate 3 is provided in the space 4 to define an upwardly helical flow path for the liquid mixture. The flow path is divided by at least one vertically positioned continuous helical plate 5 which serves to regulate the flow and to enhance separation by contact with the liquid. The plate 5, is positioned to a height lower than that of the passage and has a number of through-holes or cut-away portions 5<SP>1</SP> therein, Fig. 6 (not shown), to facilitate collection of the separated oil. The scoop plates 6 are curved against the flow direction and direct the lighter liquid through the openings and into riser pipes 7 discharging continuously into the interior of the container 2. Valves 11 are provided at the top of the riser pipes to regulate the discharge as desired from visual examination through an inspection window 12. Any heavy liquid entrained with the light liquid into the container 2 is separated therefrom by settling which is facilitated by the provision of perforated plates 8. The level of the interface between the heavy and light liquids in the container 2 may be regulated by an automatic level control means 22 associated with a level detecting terminal 20 and an electromagnetic valve 21 for the discharge of the heavy liquid. Instead of an automatic control means, a pair of cocks on the cylinder 2 may be used to regulate the interface level. To facilitate the separation of the light liquid in the flow passage 4, an inert gas may be blown under controlled pressure through ducts 14 of porous material, Fig. 1 (not shown). The gas pressure inside the apparatus is regulated by a valve 13. In a modification, the helical plate 3 may be dispensed with and the whirling obtained only by tangential feed of the liquid mixture into the passage 4. The apparatus is particularly suitable to separate oil from oil-contaminated water especially in marine vessels or land installations.
Patent GB-1090977-A (GB)
Title: Improvements in the production of foundry moulds
Inventor: TAYLOR ARTHUR
IPC: B22C23/00
Filed: 1964-12-16
Abstract: 1,090,977. Moulding machines. LANGLEY ALLOYS Ltd. March 16, 1966 [Dec. 16, 1964], No. 51261/64. Heading B3F. Apparatus for making pouring cups for foundry moulds comprises a heated metal pattern 1 which is reciprocatably mounted by pneumatic means 5 above a container 10 holding an appropriate sand moulding composition. In operation, the pneumatic means moves the heated pattern 1 into the material in the container 10 which is maintained at a predetermined height therein. After a prescribed time the pattern with a layer of material adhered thereto is raised and displaced laterally by pneumatic means 7 into a heated curing oven 20. After a predetermined curing time the pattern 1 is raised and the cup formed thereon is stripped therefrom by means 23 and discharged into a bin 26. Means 30 is provided to spray the pattern surface and to fluidize the moulding material in the container 10 before each specific coating operation. The whole sequence of operation may be effected automatically and a plurality of pattterns may be used simultaneously.
Patent GB-1404350-A (GB)
Title: Hole saw assembly
IPC: B23B51/04
Filed: 1972-11-08
Abstract: 1404350 Trepanning tool BLACK & DECKER MFG CO 8 Nov 1972 [29 Dec 1971] 51520/72 Heading B3C [Also in Division B5] A trepanning tool comprises a cutter 2, a shaft 3, and a driving plate 7, the latter having at least two integral projections 10 which coact with bores in the cutter so as to drive the latter, and the shaft is of elongated crosssection at area 6, which engages a similar bore in the plate 7. A pilot drill 4 is provided. Area 6 may be extended so that nut 8 tightens against the end of this area so as to allow float and wobble of the cutter.
Patent GB-1087776-A (GB)
Title: A method and device for forming shapes from mouldable raw material
IPC: B28C1/22
Filed: 1965-12-06
Abstract: Shapes are formed from mouldable raw material, e.g. de-watered raw cement slurry, slaked lime, red mud, ores, magnesite, dolomite and clay, by forcing the raw material through holes in a perforated wall by a spreading member passing along said wall in such a manner that the formed shapes have a plurality of grooves extending into the core of the shapes in accordance with Specification 960,995, the desired porosity and plasticity of the material being obtained by treating the material with super-heated steam.  The material may also undergo a vacuum treatment.  The steam treatment may be made before, during or after the shaping and may be carried out in two types of apparatus (Figures not shown), the first characterized in that the perforated wall forming the flow of the device is provided with a steam inlet in the area of the approach side of the spreading member, the second characterized in that the holes for the passage of the material are broadened in the direction of material flow and steam inlets open into the broadened portions.
Patent GB-1129988-A (GB)
Title: Digital computers
Inventor: OCHSNER BRANDT PHILLIP
IPC: G06F9/48
Filed: 1965-12-06
Abstract: 1,129,988. Digital electric computers. WESTERN ELECTRIC CO. Inc. 6 Dec., 1965 [7 Dec., 1964], No. 51615/65. Heading G4A. A digital electric computer comprises storage means (10, 30) for storing a plurality of functional routines, digital data words and task assignment words, the task assignment words including a data word address portion and a functional routine address portion, a plurality of similar data processors, and means for enabling each of said processors in accordance with a different one of said task assignment words for operating on the digital data identified by the task word in the manner determined by the routine identified by the task word. In operation an operand memory (30) (Figs. 1 (not shown) and 3) stores the task words and the data words, the task words containing absolute and conditional enabling bits. In an example of an operation, any available data processor searches memory 30 for an absolute enabling bit indicating that a fully enabled task word is ready. The absolute enabling bit is then set to 0. The task word gives the address of the functional routines stored in a permanent memory 10 and the data stored in memory 30, and any updating of succeeding task words. As shown in Fig. 3 task words 701, 702 are independent of each other and can be performed independently by different processors. However, word 701 causes the setting of a conditional enabling bit in word 703 and since only one conditional bit exists then the absolute enabling bit is set. Vacant processors will thus perform word 703 after 701 has been performed. 702 and 703 both set conditional bits in 704 before the absolute bit is performed so that 704 can be performed only when 701, 702 and 703 have been performed. The end of each routine stored in memory 10 carries a transfer to an algorithm causing a search for the highest priority, fully enabled task word. Each processor contains an arithmetic unit, an instruction location counter and a randomly synchronized clock, the random synchronization acting to prevent an accessing conflict from occurring so that two units will not apply for data from a module at the same time, the first application causing a switch to be set excluding all other units.