baber/WOPTO huggingface dataset:
Patent GB-1338943-A (GB)
Title: Telecommunications exchanges
IPC: H04Q3/545
Filed: 1971-11-11
Abstract: 1338943 Automatic exchange systems SIEMENS AG 11 Nov 1971 [17 Nov 1970] 52351/71 Heading H4K In a centrally controlled telecommunication exchange controlled by duplicate processors only one of which is actively involved at a time in switching processes, a scanner/distributer (as described the line scanner) is arranged to scan an input station for changes of semipermanent data such as directory to equipment translations and in the event of the input station being active the active processor receives the input data, updates its own store and arranges for the input data to be continuously or intermittantly available for a sufficient period for the duplicate processor to also receive the input data as soon as it completes any checking &c. fuction it may be involved in. Three alternative arrangements are outlined. In one the active processes causes both processors to be connected via the scanner/distributer to the input station and repeatably requests the input information over a period sufficient to ensure that the duplicate processor has also responded thereto. In other arrangements only the active processor is initially connected to the input station, the active processor repeats the data to the input station and after checking the duplicate processor is connected to the input station or to the active processor, the latter in either case repeating the data a sufficient number of times to ensure its reception.
Patent GB-1355580-A (GB)
Title: Selective liquid phase epitaxial growth process
IPC: C30B19/10
Filed: 1971-11-11
Abstract: 1355580 Electroluminescence GENERAL ELECTRIC CO 11 Nov 1971 [17 Feb 1971] 52532/71 Heading C4S [Also in Divisions B1 and H1] A semi-conductor structure is prepared by first immersing a wafer of semi-insulating GaP one face of which is masked except for a set of parallel strips into a donor (acceptor) doped saturated solution of GaP in Ga and lowering the solution temperature to epitaxially deposit N(P) type GaP on the strips. After removal from the solution the treated surface is rendered planar and remasked to leave exposed parallel strips intersecting the first set of strips, and immersed in an acceptor (donor) doped saturated solution of GaP in Ga to epitaxially deposit P(N) type strips, thus forming a connected matrix of electroluminescent PN junctions. As described the wafer face is 111 orientated and oxide masked and the first solution (containing Te as dopant) contained in a graphite, quartz or BN crucible disposed in a flow of hydrogen, argon and/or nitrogen. The solution is at 1030 C. when the wafer is immersed in a vertical or horizontal position, and its temperature initially raised by up to 5 C. to dissolve the surface material, and then lowered at 0À3-1 C./minute with occasional stirring to 930-980 C. before the wafer is withdrawn. If necessary its surface is then polished to make the grown layers flush with the masking, new silicon oxide or nitride masking provided exposing strips normal to the first set and P type material grown as before save that zinc and oxygen are the dopants and the process is performed in a closed container (Fig. 3, not shown) using a cooling rate of 3-10 C./minute. Electrodes are provided on the P type strips by depositing gold-zinc overall, electroplating with nickel and then etching via pyrolytic silica masking to leave strip contacts apertured over each PN junction. After lapping the back of the substrate to expose the N strips and subdividing into matrixes of the required size these are alloyed to ceramic chips carrying matching strip electrodes of gold-tin alloy. Dimensions are disclosed. Uses include computer read-out displays.
Patent GB-1410803-A (GB)
Title: Hydrogen chloride recovery
IPC: B01D3/36
Filed: 1972-11-16
Abstract: 1410803 Purifying hydrogen chloride containing effluent LUMMUS CO 16 Nov 1972 [16 Nov 1971] 52929/72 Heading C1A The effluent from an oxychlorination reactor is purified, and made suitable as feed for such reactor by separating the hydrogen chloride content of the effluent as an aqueous solution of hydrogen chloride, e.g. by cooling, and then submitting this solution to an azeotropic distillation in an apparatus comprising two columns 30 and 54, first column 30 being operated at pressure and temperature to produce essentially water-free hydrogen chloride overhead and the second column 54 being operated at pressure and temperature to produce HClfree water overhead, the pressure in column 30 being higher than that in 54, the aqueous solution of HCl produced by quenching the effluent from oxychlorination reactor 11 in tower 19 being introduced into one of said first and second columns, e.g. column 30, the bottoms from the first column being introduced into the second and bottoms from the second being introduced into the first, a molecular oxygen containing gas, e.g. air, being introduced into the first column 30 via compressor 34, 35 and line 37 so that a mixture of oxygen containing gas and water-free hydrogen chloride is withdrawn overhead via line 14 and passed back to the oxychlorination reactor 11. If the aqueous solution of HCl has a concentration less than the bottoms of the first column it is introduced into the second column, however if the concentration is greater than the bottoms of the first column it is introduced into the first column. The temperature of the oxygen containing gas introduced into the first column may be 250 to 350 F. and its pressure 5 atm. to 8 atm. The first column may be operated at a column pressure of 4 atm. to 7 atm., an overhead temperature of 110 to 170 F., and a bottoms temperature of 295 to 340 F., and the second column may be operated at a pressure of 1À1 to 1À7 atm., an overhead temperature of from 150 to 170 F. and a bottoms temperature of from 230 to 255 F. The residual effluent gas from which the aqueous HCl is first separated may be used as the stripping gas. Reactions to which the present process may be applied include:-(1) the reaction of molecular oxygen, hydrogen chloride, and a salt mixture of the higher and lower valent forms of a multivalent metal chloride to enrich the high valent metal chloride content of the mix; (2) the production of chlorinated hydrocarbons using molecular oxygen and HCl; (3) the production of chlorine using HCl and oxygen; (4) the production of the higher valent chloride of a multivalent metal using an oxychloride of the metal and HCl; (5) the production of chlorinated hydrocarbons using the oxychloride of a multivalent metal, HCl, and a hydrocarbon.
Patent GB-1174264-A (GB)
Title: Operation of chlor-alkali cells and anolyte liquid level control.
IPC: C25B9/19
Filed: 1966-11-25
Abstract: 1,174,264. Electrolytic chlor-alkali diaphragm cells. HOOKER CHEMICAL CORP. Nov. 25, 1966 [Nov.29, 1965(3)], No.53015/66. Heading C7B. In a process for operating a group of chloralkali diaphragm cells in which a decomposition voltage is applied across the electrodes of the diaphragm cells, a solution of an alkali metal chloride is fed to the anolyte compartment of each of the cells at a rate in excess of the rate at which liquor flows through the diaphragm of the cells, the excess feed solution is withdrawn from the anolyte compartments of the cells and replenished by combining with additional amounts of an alkali metal chloride, hydrogen chloride, as gas or aqueous solution, or mixtures thereof, and the replenished solution of alkali metal chloride is returned to the anolyte compartments of the cells. The diaphragm cells used for carrying out the above process may comprise an anode compartment 46 containing anodes 56 and separated from the cathode compartment by diaphragm 50; brine inlet 52; chlorine outlet 54; alkali metal hydroxide outlet 49 and an anolyte withdrawal system 64. The anolyte withdrawal system may comprise a bent tube 64, as shown, which is rotatable about the axis of the opening 66, such that the level of anolyte maintained may be varied. Alternatively cells may be used in which the anolyte is withdrawn from a level beneath the surface thereof, Fig. 5 (not shown) the tube 70, indicated by (20) in Fig. 5, being provided with a variable level control by means of movable vertical overflow tube (28) positioned within the tube (20), which is also provided with a sight glass (40) through which the liquor withdrawn from the anolyte may be observed. The space above the anolyte and the space within the tube (20) and above the overflow tube are interconnected to equalize the pressure therein. The anolyte withdrawal systems are preferably formed of non-conductive materials resistant to chlorine attack, e.g. synthetic polymers such as polyvinyl chloride, chlorinated polyvinyl chloride, and chlorinated polyesters and rubbers; glass; ceramic material or metals such as tantalum or titanium.
Patent GB-1075440-A (GB)
Title: Transistor circuit
IPC: H03B1/00
Filed: 1965-12-14
Abstract: 1,075,440. Transistor oscillating circuits. MOTOROLA Inc. Dec. 14, 1965 [Jan. 6, 1965], No. 53054/65. Heading H3T. In a U.H.F. transistor oscillator, the transistor 10 is enclosed in a conducting housing 12 which is connected to the collector. The transistor is mounted, by means of insulating washers 36, 42 which engage flange 38, on the end wall of a cylindrical cavity resonator 32. An inner conductor 40 fits over and connects with the transistor housing 12 and is connected to the other end wall of cavity 32 by way of variable tuning capacitor 44. Biasing potentials are applied to the collector and emitter of the transistor via lead-through capacitors 22, 24 respectively and R.F. chokes 26, 27 respectively; the base is connected to pin 16 whereby it is earthed to the cavity structure. Energy is removed from the arrangement by means of coupling loop 52.
Patent GB-1216120-A (GB)
Title: Chlorinated polyvinylidene fluoride
Inventor: BACSKAI ROBERT
IPC: B32B15/08
Filed: 1968-11-08
Abstract: 1,216,120. Laminates. CHEVRON RESEAKCH CO. 8 Nov., 1968 [13 Nov., 1967], No. 53159/68. Heading B5N. [Also in Division C3] Laminates comprising a sheet formed from a chlorinated solid vinylidene fluoride homopolymer adhering to a sheet of metal (e.g. aluminium and magnesium) may be prepared by uniformly sprinkling crumbs of the polymer over an etched sheet and moulding in a die. Unchlorinated polymer can be similarly moulded.
Patent GB-1457976-A (GB)
Title: Seals for shafts
IPC: F16J15/32
Filed: 1974-12-09
Abstract: 1457976 Shaft seals PAULSTRA 9 Dec 1974 [21 Dec 1973] 53215/74 Heading F2B To prevent the web 4 of a resilient spring- pressed lip seal from being deformed by hydrostatic pressure F, the web is bowed outwardly throughout its axial extent and a steep angle of incidence #, of 35-45 degrees, is provided.
Patent GB-1291161-A (GB)
Title: Method of cutting sheet glass and apparatus therefor
IPC: C03B33/033
Filed: 1970-11-10
Abstract: 1291161 Dividing glass sheets CENTRAL GLASS CO Ltd 10 Nov 1970 [1 Dec 1969] 53421/70 Heading C1M Glass sheets are divided along a scored line 14 by conveying the sheets along a set of conveyer rolls 2 to a cutting roll 3 which is raised relative to the conveyer rolls 2 and directing jets of a fluid such as air on to an area of the sheet overlying the roll 3 from a jet box 23, so that when the scored line 14 overlies the line of contact between the sheet and cutting roll the score line is broken open by the fluid pressure on each side of the line 14. The jet box 23 is secured to a square supporting plate 6 and includes a bottom wall provided with an upwardly extending cone-shaped protuberance 25 for controlling the air flow and a plurality of obliquely extending nozzles 24. The plate 6 is carried on two supporting rods 7 extending in the conveying direction which are in turn slidably supported on sockets 21, 21<SP>1</SP> mounted on cradle rods 8, 8<SP>1</SP> so that the position of the jet box may be adjusted. The jet box is supplied with air from a blower 11 via a pipe 13. A second set of conveyer rolls 5 which run at a higher speed than the rolls 2 removes the divided glass sheet.
Patent GB-535160-A (GB)
Abstract: 535,160. Gyroscopic apparatus. SOC. INDUSTRIELLE DE MECANIQUE ET DE MATERIEL D'EQUIPEMENT. Feb. 9, 1940, No. 2550. Convention date, Feb. 8, 1939. [Class 97 (iii)] To compel the rotor axis of a gyroscope to remain vertical a cup-shaped member 1 is provided having its axis co-axial with the rotor axis and driven in any manner at uniform speed from the gyroscope. Two balls 7, 8 are free to roll on the bottom of the cup the larger ball 7 being in the middle of the cup providing an annular passage way around it along which the smaller ball 8 is free to run. A guard cover for the cup member 1 is provided constructed to permit small radial movements of the larger ball 7. If the axis tilts the larger ball 7 will move to one side restricting locally the annular passage way to such an extent that the smaller ball will not be permitted to run around the passage way but will be held in such a position as to provide a restoring torque to the axis. A gear 6 is provided for driving the cup shaped member 1 which is provided with pivot axes 2, 4. French Specification 850,087 is referred to.
Patent GB-1212839-A (GB)
Title: Face-to-face seals or gaskets
Inventor: HINCHLIFF STEPHEN
IPC: B29C67/08
Filed: 1967-11-24
Abstract: 1,212,839. Moulding gaskets. DOWTY SEALS Ltd. 14 Nov., 1968 [24 Nov., 1967], No. 53551/67. Heading B5A. [Also in Divisions B2 and F2] A gasket is made by depositing a layer of gasket material on to a temporary base 2 through a stencil 4, curing or setting the material and then removing it from the temporary base. Gasket material 5 (e.g. nitrile rubber, epoxy resin or P.V.C.) is passed through a screen 3 by a screen printing process into the stencil 4 and on to the temporary base 2 to form a gasket layer 8 having apertures 9, 10. In the gasket shown, a further deposit 13 is screenprinted around the apertures, either before, during or after the curing or setting step for the layer 8. A foaming agent may be introduced to produce a cellular construction. The temporary base 2 may be made of metal, paper or plastics and coated with P.T.F.E., silicone base material, wax or soap to facilitate removal of the gasket. Reference has been directed by the Comptroller to Specification 1,051,747.
Patent GB-1373250-A (GB)
Title: Amine-type developer for diazotype materials
IPC: G03C5/18
Filed: 1971-11-18
Abstract: 1373250 Developing diazotype materials ADDRESSOGRAPH-MULTIGRAPH CORP 18 Nov 1971 [26 March 1971] 53684/71 Heading G2C A liquid developer for developing exposed two component diazotype material comprises 1-20 wt per cent of a fatty carboxylic acid having 16 to 18 carbon atoms and from 20-80 wt per cent of morpholine, piperidine or an alkyl morpholine or an alkyl piperidine, diethylenetriamine, N- aminoethylethanolamine or an amine of formula:- wherein R 1  is alkyl, cycloalkyl, alkaryl, alkylol, alkoxy or alkylolalkoxy and R 2  and R 3  are any of the groups specified for R 1  or hydrogen dissolved with or without water by a monohydric alcohol with at least 6 C atoms, a poly-hydric alcohol or a glycolether. The developer may be as disclosed in Specification 1143703 with oleic, stearic, psalmitic or a octadeca-(di or tri) enoic acid added. The developer may be used in the apparatus of Specification 1143702, the acid allowing more uniform distribution of the liquid.
Patent GB-1485650-A (GB)
Title: Hinge devices
IPC: E05D7/04
Filed: 1974-12-12
Abstract: 1485650 Adjustable hinge mountings BLUM GmbH 12 Dec 1974 [24 Dec 1973 31 Dec 1973] 53841/74 Heading E2F In a hinge of the type in which a U-section hinge arm 7 is adjustably associated with a mounting plate 1 secured to an article to be hinged (e.g. the inside face of a cupboard side wall), a U-section intermediate member 2 engages the mounting plate and is secured via an adjustment part 3 to the hinge arm; an adjustment screw 6 allowing movement of the part 3 toward and away from the part 2 and a clamping screw 5 acting between the hinge arm and part 3. Member 2 has projections 13 that slidably engage plate I for easy assembly and has a spring bar 4 that locks into a socket in the assembled position. Hinge arm 3 can slide along part 3 when screw 5 is loosened. A further embodiment is disclosed (Figs. 4, 5 not shown) having the additional feature of adjustment of the intermediate part relative to the plate in a direction at right angles to the plane of Fig. 1. This feature is the subject of Specification 1485649.
Patent GB-1224407-A (GB)
Title: Continuous focusing mechanism using triangulation principle
Inventor: LEVIN HERMAN
IPC: G03B13/20
Filed: 1969-11-05
Abstract: 1,224,407. View-finder and focusing systems. BELL & HOWELL CO. Nov. 5, 1969 [Nov. 29, 1968], No.54255/69. Heading G2A. A camera having a view-finder 46 in which an image is formed by the objective lens assembly 20, has also an auxiliary view-finder 52 and auxiliary lens 60, focusing being carried out by the auxiliary system, this being coupled to the main system and so causing this to be focused also. The lens assembly 20 comprises a lens 24 mounted in a barrel 22, within which slides a sleeve 30 carrying a further lens 28. Adjustment of sleeve 30 and lens 28 focuses the image on the film plane 32. A semi-reflecting mirror 40 reflects the image, via a further mirror 42, on to the viewfinder screen 46, visible through an opening 48. Adjacent screen 46 is the auxiliary screen 52, on which a reference mark 56 is visible. The auxiliary lens 60 is mounted in a barrel 64, and can be pivoted about a shaft 72 by a handle 76. To maintain the image on screen 52 when lens barrel 64, and hence its optical axis 62, is in an inclined position, a cube 68 of a plastics material is interposed in the light path, as shown See also Fig. 5 (not shown.) In focusing the camera, lens barrel 64 is inclined until axis 62 passes through the foot of the object being photographed as in Fig. 1 (not shown), and this point is aligned with reference mark 56. The upper part of handle 76 carries a gear sector 82 which engages a rack portion 84 integral with sleeve 30. Thus as the inclination of axis 62 alters, the position of lens 28 is also altered, and the focus of lens assembly 20 maintained at the appropriate value.
Patent GB-1457680-A (GB)
Title: Thermally responsive valve assembly
IPC: G05D23/19
Filed: 1974-12-17
Abstract: 1457680 Valves TEXAS INSTRUMENTS Inc 17 Dec 1974 [20 Dec 1973] 54394/74 Heading F2V In a thermally-actuated valve the closure member is in the form of a bimetallic disc 13 which is moved from a position in which it closes a port 7 in a capsule 3 to a position in which it allows flow from a port 5 to the port 7 when an electric heater 17, e.g. of a PTC resistance material, is energized via electric contacts 47a, 47b. The disc 13 is bowed towards the seat in the first position and is biased closed in this position by a wavy spring 15. On heating the disc reverses its curvature and reacts against a shoulder 25 to move to its open position. The disc may be placed in the capsule so that it is open or closed at ambient temperature. The capsule is placed in a plastics housing 35 having inlet and outlet nipples 41a, 41b. As shown the disc 13 carries a resilient pad 11 which is fastened to the disc by a button 32 inserted through a hole in the disc. However the disc may alternatively seat on a resilient grommet inserted in the port 7.
Patent GB-1322984-A (GB)
Title: Contact lens cases
IPC: A45C11/00
Filed: 1970-11-17
Abstract: 1322984 Cases for contact lenses WARNER-LAMBERT CO 17 Nov 1970 [19 Oct 1970] 54706/70 Heading G2J A contact lens case comprises a cover 2 and a base portion 1, the cover having means therein defining a domed recess capable of encompassing the corneal portion of a scleral contact lens, the base portion 1 having a recess 3 of circular cross-section or, if non-circular, having a rotional inscribed circle opposed, in the closed case, to the interior of the domed recess, the circular cross-section or inscribed circle being of greater cross-section than the maximum cross-section of the domed recess, and being capable of receiving the scleral portion of the lens, the cover 2 and the base portion 1 co-operating together to enclose the lens, the cover and the base contacting, when closed, externally of the base portion recess. The two portions 1 and 2 may be hingedly connected, as shown, and a catch 17, 18 co-operating with a detent 19 provided. The recesses may both be defined by radial pieces 7 and 10 so that the case may be immersed in cleaning fluid to allow cleaning of the lens.
Patent GB-1143429-A (GB)
Title: A superfinishing machine
IPC: B24B47/04
Filed: 1966-12-08
Abstract: 1,143,429. Grinding. G. KONDO. 8 Dec., 1966 [10 Dec., 1965], No. 54906/66. Heading B3D. A superfinishing machine comprises right and left vibrators 13, 13 each supporting at least one grindstone 21 and mounted on at least one pair of upper and lower parallel round rods 12, 12 through the medium of air bearings 14, and a pair of eccentric cams 16<SP>1</SP>, 16<SP>1</SP> having equal throws in opposite directions to each other rotatably mounted between the vibrators, springs 17, 17 pressing the vibrators against the cams. The grindstones are carried by pressure cylinders 23 on the vibrators which are supported in floating condition on the rods 12, 12 by the air bearings. The cams carry ball bearings engaging the vibrators and are mounted on the tapered end of a rotatable shaft 15. The grindstones engage a workpiece rotatably driven by a hypoid feed roller.
Patent GB-1440570-A (GB)
Title: Rear-view mirror for a motor vehicle
IPC: B60R1/12
Filed: 1972-11-28
Abstract: 1440570 Vehicle rear-view mirrors M LITMAN 20 Nov 1973 [28 Nov 1972] 54957/72 Heading B7J A rear-view mirror for a motor vehicle carries a pair of oppositely disposed repeater lamps 5 visible through arrow-shaped windows 4 formed by the omission of silvering of the mirror reflecting member 1, the lamps being connected to the electrical circuit of flashing direction indicators of the motor vehicle to give the driver visual indication of indicator operation. The mirror carries a light sensitive device arranged in the electrical circuit so that the illumination of the lamps 5 varies according to the level of ambient light, to thus avoid dazzling the driver at night. The reflecting member 1 is carried in a plastics safety frame 3. Various circuits for the control of the repeater lamps are described, Figs. 2-4 (not shown).
Patent GB-1454543-A (GB)
Title: Air filters
IPC: F02M35/024
Filed: 1973-11-28
Abstract: 1454543 Air filter B J TUIN 28 Nov 1973 [15 Dec 1972] 55055/73 Heading BIT An air filter comprises a cylindrical casing 1 with a separable cover 2 and in which a replaceable annular plastics foam, filter insert 6 is placed Air flows through wire mesh wool 4 and insert 6 to exit 5. A wire cage 7 prevents collapse and leaks are prevented by sealing rings 8 above and below the insert. In Fig. 6 (not shown) the cover is held by external springs (14) and the insert is urged downwardly by spring (13) pressing an annular plate (12), the cover has an additional central inlet opening and the annular filter insert is closed across the top. In Fig. 7 (not shown) the filter insert is extended below the cage 7 to the central outlet pipe 5 which is extended upwardly into the insert interior. Sealing rings 8 may be attached to the insert, or be replaced by annular ridges on the cover (Fig. 4 not shown). The insert may be composed of concentric rings of material of different porosities, the coarsest being external, which may be glued or welded together or separable.