baber/WOPTO huggingface dataset:
Patent GB-1124531-A (GB)
Title: Improvements in and relating to axial-flow pumps
IPC: F04D29/02
Filed: 1966-03-16
Abstract: 1,124,531. Axial-flow pumps. L. J. A. JONCKHEERE. May 30, 1967 [March 16, 1966], No. 11501/66. Heading F1C. An axial-flow pump, e. g. for acids or alkalis, has the liquid contacting surfaces of the impeller 29, the impeller shaft 22 and an intermediate shaft 18, and the mutually engaging surfaces of the intermediate shaft 18 and a supporting bearing 17, formed of synthetic resin polymer or co-polymer. The impeller, its shaft and a sealing baffle 26 maybe of P.V.C., P.T.F.E., P. P. P. or a compound thereof. The impeller may be entirely of synthetic resin. The impeller shaft and the intermediate shaft may be of metal, e.g. steel, coated or sheathed with glass-loaded P.T.F.E. The pump housing and bearing mounting may be entirely of synthetic resin or of metal lined or coated with synthetic resin. The bearing is preferably of glass-loaded P.T. F.E. Conduits 3, 5 form either the pump inlet or the outlet respectively depending of the direction of impeller rotation. The free end of the impeller shaft may carry a P. T. F.E. bearing member which is in bearing contact with a P.T.F.E. ring mounted transversely within the pump housing. The conduit 5 may be replaced by a number of angularly spaced radial passages in the pump housing wall. The pump may be vertically arranged.
Patent GB-558692-A (GB)
Title: Improved method of molding non-plastic material
IPC: C04B33/02
Filed: 1942-08-17
Abstract: 558,692. Refractory materials. HADDON, R. (Corning Glass Works.) Aug. 17, 1942, No. 11517. [Class 22] [Also in Group XXIII] A process of slip casting articles of non- plastic ceramic materials such as alumina, zirconia, glass, zircon, beryl free from plasticisers and binding agents comprises wet milling the material with about 20 per cent. water until at least 95 per cent. of it will pass through a screen having 325 meshes per inch, drying the resultant slip at 100‹C. to 300‹C. to a coherent chalky mass, repowdering the mass to a uniform texture free from lumps, forming a slip of the dried and repowdered material with water, casting the slip into a mould and extracting the water from the cast slip. The material may be calcined prior to wet milling. After low temperature heating to expel moisture the articles are fired at a temperature to cause sintering or incipient fusion.
Patent GB-1032222-A (GB)
Title: Automatic control device
Inventor: LEWIS OLIVER GRIFFITH
IPC: F02D1/08
Filed: 1963-03-22
Abstract: 1,032,222. Automatic control of I.C. engines. ESSO RESEARCH & ENGINEERING CO. March 22, 1963, No. 11540/63. Heading G3R. In a system for automatically controlling an internal combustion engine, a variable affecting engine power is progressively varied until a dependent variable of the engine reaches and passes a maximum or a minimum whereupon the power is varied in the reverse sense and finally fixed at the value corresponding to the maximum or minimum value of the dependent variable. In Fig. 2 (not shown) an electric motor M 1 , supplied from a source 10a, progressively closes a fuel valve 18 to decrease the richness of air/fuel mixture to an internal combustion engine. If efficiency increases, combustion temperature increases, and an amplified signal from a thermocouple T c  causes a motor S1 to move an arm P clockwise so that contacts C 1  mounted on a frictionally restrained disc are closed to energize a follow-up servomotor M 3  to the output of an amplifier A 3 . Under these conditions motor M 3  maintains a potentiometer R 3  in correspondence with a potentiometer R f  adjusted by motor M 1  until combustion temperature ceases to rise and arm P allows contacts C 1  to open. Then, as combustion temperature falls, arm P closes contacts C 2  and a relay B 1  is operated to reverse motor M 1  and thus increase richness of the mixture. Relays B 2 , B 3  are also operated to connect a motor M 4  to the output of amplifier A 3  instead of motor M 3  which remains in a position corresponding to optimum mixture. Since the mixture is too lean, motor M 4  is held against a stop D but immediately after potentiometers R f , R 3  come into balance again motor M 4  reverses and opens a switch C 6  to stop motor M 1  at the optimum setting. Application to obtaining optimum detonation or spark timing is also referred to.
Patent GB-1294049-A (GB)
Title: Caliper-type linear dimension measuring device
Inventor: KOZAKURA KIMO
IPC: G01B3/10
Filed: 1971-04-27
Abstract: 1294049 Caliper gauges Y NUMATA 27 April 1971 [10 July 1970] 11573/71 Heading G1M A caliper-type linear dimension gauge comprises a measuring tape 2 in the form of a spiral spring, a jaw 1 fixed to the tape and a further jaw 4 provided on a frame 5 slidably mounted on the tape 2.  For Figure See next page
Patent GB-129788-A (GB)
Title: Improvements in or relating to Windings for Dynamo-electric Machines.
IPC: H02K3/14
Filed: 1918-07-15
Abstract: 129,788. Kuyser, J. A., and British Westinghouse Electric & Manufac-. turing Co. July 16, 1918. Conductors. - A composite conductor for insertion in the slots of dynamo-electric machines comprises three or more intertwined or twisted straps 14- - - 17. Fig. 6, arranged in a single set, each strap being reduced in cross-section at the places where it crosses an adjacent strap; the straps are connected in parallel, and their voltages are equalized by arranging parts of each strap to occupy respectively the bottom, the intermediate positions, and the outer position in a slot. The arrangement shown in Fig. 6 may be duplicated, a strap at the bottom of a slot at one end of the conductor being at the bottom of a slot at the other end, and so on; for three straps, the arrangement given in Fig. 8 may be adopted. To form the part of reduced cross-section, the strap is bent as shown in Fig. 1, the projecting portion 9 is removed as far as the line 10, and the strap is bent again to the shape shown in Fig. 5.
Patent GB-796018-A (GB)
Title: Improved fluid control valve
IPC: G05D7/01
Filed: 1955-04-22
Abstract: 796,018. Thermally-actuated valves. SMALLPEICE, C. D. P. Oct. 17, 1955 [April 22, 1955], No. 11625/55. Class 135. A fluid control valve in which a heat-expansible element 16, heated by electrical resistance heating, operates a valve 15, has the element itself providing the electrical heating resistance. The metallic element bows upward and opens the valve when heated. In another embodiment the element is a bimetal U-shaped lever secured to the casing at the ends of its arms and carrying the valve at the junction of the arms. In a further embodiment the element is a rod which moves a spring-loaded lever carrying the valve.
Patent GB-737745-A (GB)
Title: Improvements in or relating to hydraulically operated variable pitch propellers
Inventor: GODDEN THOMAS EDWARD
IPC: B64C11/42
Filed: 1952-05-08
Abstract: 737,745. Variable-pitch propellers. ROTOL, Ltd. June 5, 1953 [May 8, 1952], No. 11670/52. Class 114. In a hydraulically operated variable pitch propeller in which liquid is supplied through a coarse pitch conduit 47, 95 to a pitch change motor to increase the pitch of the blades, a normally open lock valve 52 in the conduit is closed in response to the attainment of a propeller speed in excess of a predetermined value, the valve being adapted so that after it has been closed it remains closed when there is an excess of pressure on the pitch change motor side (95) of the valve above that on the other side (47), and a non-return valve 53 is provided in a conduit bypassing the lock valve and arranged to be closed when the pressure on the pitch change motor side (95) exceeds that on the other side (47). The valve 52 is tubular and closes an orifice 51 under the control of fly-weights 62, the opposite end is of large diameter and slides in a cylinder 59 so that when the valve closes it is held closed by the pressure acting on that end. The non- return valve is mounted in the end of the cylinder 59. The propeller is reversible and is provided with a fine pitch stop and a super-fine pitch stop or in a modification is non-reversible and is provided with a fine pitch stop. Liquid to feather the blades is supplied by a conduit 48 and passes to the motor via a duct 87. Increased pressure to release the fine pitch stop and put the blades into super-fine pitch opens a valve 45 and allows liquid to pass to the stop release device. Still higher pressure passes through the valve 45 to release the super-fine pitch stop when the propeller is to be reversed. To prevent the valve 52 closing during momentary over speeding while the blades are passing to super-fine or reverse pitch, an overriding device is provided to hold the valve 52 open. This device comprises a cylinder supplied with liquid through a valve 69, arranged to open at a predetermined pressure, containing a piston 49 which moves out to contact a rod 66 secured to the valve 52. In a modification the piston carries a rod which contacts the valve 52 and the under side of the piston is vented to the other side (47) of the valve 52. Specification 672,953, [Group XXXII], is referred to. Reference has been directed by the Comptroller to Specification 691,755.
Patent GB-795590-A (GB)
Title: Improvements in liquid level indicators
IPC: G01F23/26
Filed: 1956-04-17
Abstract: 795,590. Capacitors. BENDIX AVIATION CORPORATION. April 17, 1956 [April 29, 1955], No. 11689/56. Class 37. Apparatus for measuring the level of a liquid (e.g. liquid oxygen) in a container having a top opening, comprises a capacitor having a plurality of coaxial tubular cylindrical electrodes which dip into the liquid in the container and are carried by a closure for the container, the closure being provided with a fluid supply passage which communicates with the interior of the innermost electrode and through which the liquid is supplied to the container and a further passage which communicates with an annular passage surrounding the innermost electrode and serves for drawing off gaseous oxygen from above the liquid oxygen in the container. The capacitor comprises an innermost electrode 22 which extends into the closure member 18 for the container and communicates with the liquid inlet pipe 41, an intermediate electrode 23 which is supported by the electrode 22 but is insulated therefrom by means of the insulating rings 25 and an outer electrode 24, the whole assembly being secured together by crimping the ends of the electrode 24 over metal rings 29 whereby electrodes 22 and 24 are electrically connected together. The inner cylinder 22 is open at its lower end and cylinders 22, 23 are provided with apertures 33, 34 at their lower ends and apertures 35, 36 at their upper ends so that liquid has access to the space between the inner and outer cylinders and its level is the same inside and outside the capacitor assembly. Measuring apparatus associated with the capacitor is housed in a casing 51 mounted on top of the closure 18; a lead 53 from this apparatus is led through apertures 35, 36 to connect with the insulated intermediate electrode 23. Gaseous oxygen may be drawn off from a discharge pipe 46 which communicates with the annular space surrounding the cylinder 22 and through the apertures 49 with the interior of the container above the level of the liquid therein.
Patent GB-1115677-A (GB)
Title: Improvements in or relating to code converters
IPC: H04L25/49
Filed: 1966-03-17
Abstract: 1,115,677. Data transmission systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 17 March, 1966 [20 March, 1965], No. 11695/66. Heading H4P. A code converter converts binary data to three-level data for transmission, the converter being such that certain chosen components of the frequency spectrum are suppressed. In one embodiment, Fig. 4 (not shown), single current binary data is fed to a modulo 2 adder, the output of the adder passing to a difference circuit and to an n-bit delay, n > 1. The signal from the delay is fed both to the adder and to the difference circuit. The output signal from the difference circuit is the required three-level signal and, where n = 2, this has no frequency components at 1/2T, 1/T, &c., where T is the bit period. The three-level signal may be converted to the original binary data by full-wave rectification. The modulo 2 adder may be replaced by a modulo 2 subtractor and the difference circuit by a summing circuit. A pilot frequency may be transmitted at the points where the frequency spectrum has no amplitude.
Patent GB-401593-A (GB)
Title: Improvements in and relating to travelling grates
IPC: F23H11/00
Filed: 1933-04-24
Abstract: 401,593. Furnace grates. KRONAUER, H., 156, K÷nigludwigstrasse, Recklinghausen, Germany. April 24, 1933, No. 11949. Convention date, April 23, 1932. [Class 51 (i).] In a travelling grate of the kind comprising grate sections carried by pivoted cross bearers adapted to be rocked to shake the fuel bed, the cross bearers are provided with projections with which engage rocking means disposed in the path of travel of the projections and actuated when the projections engage therewith.. As shown in Figs. 1 and 2, the bearers b are pivoted at c in the driving chains a of the grate and the pivots c carry levers e provided with rollers f. The rocking members consist of guides g mounted on shafts h carrying toothed segments i engaging with toothed segments k on shaft l actuated by an arm m driven by a servomotor. Fig. 3 shows a modification in which arms n provided with rollers o and mounted on the bearers are engaged by rods p pivoted to rods r, and arms q mounted on a rocking shaft l. Abutments on the travelling grate engage with a pivoted lever for operating the valve gear of a servomotor which operates shaft l.
Patent GB-551800-A (GB)
Title: Production of multi-colour photographic images
IPC: G03C7/26
Filed: 1941-09-18
Abstract: 551,800. Colour photography. TULL, A. G. Sept. 18, 1941, No. 11976. [Class 98 (ii] An exposed multistrata or multilayer material is developed, different silver salt complex images are formed in the different strata or layers by treatment in a bath containing thiourea or a derivative thereof and two different salts each capable of forming in situ a silver salt complex image, and of which one silver salt is formed in two strata or layers and another in the third stratum or layer and a toning bath or baths is used which forms two differently chemically toned images from the one silver salt in the two strata or layers and a third chemically toned image in the third stratum or layer. The silver salt formed in the two strata or layers may be a ferrocyanide, and that in the third stratum or layer a chromate, the ferrocyanide being toned to Prussian blue and uranium ferrocyanide in the two strata or layers and the chromate being toned yellow with a lead salt or used in the formation of a dye image as described in Specification 531,799. In an example, a three-layer material, which may have a yellow filter layer between the blue and green sensitive layers, is exposed or printed through the support and developed in a reversal developer. The material is bathed in a bath containing thiourea, potassium chromate, and potassium ferrocyanide, to produce a silver chromate image from the residual halide in the bottom layer and a silver ferrocyanide image from the residual halide in the two top layers. The material is bathed in a lead salt bath as in Specification 551,799 followed by a mixed toning bath as in Specification 540,971, or the two baths may be combined by adding lead nitrate to the toning bath of Specification 540,971. Silver and silver salts are removed with Farmer's Reducer. The uranium ferrocyanide image may be converted to zinc ferrocyanide as in Specification 540,979 and dye-toned. Specification 540,970 also is referred to. According to the Provisional Specification, the material may be first bathed in a solution of the complex-forming reagent and then in a bath of the silver salt forming reagents.
Patent GB-513864-A (GB)
Title: Improvements in or relating to multi-contact electromagnetic relays
IPC: H01H51/02
Filed: 1938-04-21
Abstract: 513,864. Electromagnetic relays. STANDARD TELEPHONES & CABLES Ltd. (Western Electric Co., Inc.). April 21, 1938, No. 11983. [Class 38 (v)] In a multi-contact relay, a mounting plate 1 carries layers of fixed and movable contact springs 8, 14 and two magnets 4, 5 with armatures 23, 24 which control respectively the upper and lower halves of the sets of springs. The contact springs are clamped along the left hand edge of the plate 1, and the right hand ends of the fixed contact springs are clamped at the right edge of the plate 1 by screws 21 and distance pieces 22. The free ends of the movable contact springs are actuated by the movements of the edges 42 of the armatures 23, 24. The armatures are pivoted on knife-edge bearings at the ends and centre of the plate 1 and are held in place by members 31, 38. Two springs 50 serve to guide a cover for the relay and prevent it from knocking against the contact springs.
Patent GB-1493320-A (GB)
Title: Watch bands
IPC: A44C5/24
Filed: 1975-03-24
Abstract: 1493320 Watch strap link HATTORI TOKEITEN KK and BAMBI KK 24 March 1975 [4 April 1974] 12161/75 Heading A3H The length of a watch strap is adjusted by introducing interconnectable links of variable separation. Each link 20 comprises a U- shaped metal sheet having aligned holes 27 in the opposite side walls 26, and a projection 30 depressed below the surface 25 at a step 31. Neighbouring links 20 are interconnected by locating a spring rod (not shown) in hooks 32 and in the appropriate holes 27 corresponding to the required link separation.
Patent GB-893163-A (GB)
Title: The diethylaminoethyl ester of dicyclopentyl acetic acid and its quaternary ammonium salts
Inventor: BARRLET CHARLES E
Filed: 1958-04-17
Abstract: The invention comprises diethylaminoethyl dicyclopentylacetate and quaternary ammonium salts thereof such as the methonitrate, benzyl bromide, etho-ethylsulphate, butobromide, pentobromide, hexobromide, heptobromide and octobromide.  The ester is prepared by reacting a dicyclopentylacetyl halide with b -diethylaminoethanol or by other standard esterification methods or by reacting a dicyclopentenylacetyl halide or a cyclopentyl-cyclopentenylacetyl halide with b -diethylamino-ethanol and hydrogenating the resulting diethylaminoethyl dicyclopentenylacetate or cyclopentyl-cyclopentenylacetate, followed by quaternation, if desired.  The products are used pharmaceutically as spasmolytic agents (see Group VI).  Specification 532,943 is referred to.ALSO:Pharmaceutical preparations having spasmolytic activity comprise diethylaminoethyl dicyclopentylacetate and quaternary ammonium salts thereof, such as the methonitrate, benzyl bromide, etho - ethylsulphate, butobromide, pentobromide, hexobromide, heptobromide and octobromide and a pharmaceutical carrier. Specification 532,943 is referred to.
Patent GB-752936-A (GB)
Title: Improvements in or relating to concrete
IPC: C04B28/02
Filed: 1954-04-28
Abstract: A dry concrete mixture comprises cement pre-dried stone rubble, and pre-dried sand.  A hygroscopic substance, e.g. magnesium carbonate or rice starch, may be included for free flowing. Specifications 20535/11 [Class 70] and 189,745 [Class 22] are referred to.
Patent GB-1500796-A (GB)
Title: Hydraulic control device for injection moulding machines
IPC: G05D16/10
Filed: 1975-03-25
Abstract: 1500796 Fluid-pressure servomotor systems PLAST-UND ELASTVERARBEITLINGSMASCHINEN-KOMBINAT KARL-MARX-STADT VEB 25 March f975 [26 March 1974] 12378/75 Heading G3P In a control system for an injection moulding machine a piston 5 is positioned according to the pressure differential in conduits 42, 43 which is determined by a nozzle-baffle system 47 having a supply pipe 41 and throttles. The piston displaces element 1, 2 or 3, 4 to connect a supply pipe 10, 11 to a work pipe 38 or 39 and the other work pipe to a drain pipe 40. In a further embodiment Fig. 2 (not shown), a pair of valve elements (1', 3') respectively connecting a work line (38') to pressure (37') and drain (40') are actuated by the opposite ends of a lever (9') which in turn is actuated by two pistons (5', 6') acting on the lever ends and positioned by a nozzle-baffle system (47'). In a still further embodiment Fig. 3 (not shown), similar to that shown a piston (5") is positioned by a control pressure on one side (27") and the working pressure on the opposite side (28'') and the valve elements (1'', 3") controls the communication between the working pressure line (Z) and the supply (D) and the exhaust (A) respectively. The control pressure is determined by pressure limiting valves (50'', 55'') and (56") each of which has a different set pressure switched into circuit by magnetically -operated directional control valves.
Patent GB-1043233-A (GB)
Title: Improvements in or relating to the formation of a metal layer on an electrically non-conducting support
Inventor: BISSET HUGH ALEXANDER
IPC: H05K3/38
Filed: 1962-03-30
Abstract: A metal layer e.g. of Cu, Ag, Ni or Sb is formed on an electrically non-conducting support of a polymerization product of one or more fluorinated hydrocarbons especially ethylene derivatives such as P.T.F.E. or polytrifluorochloroethylene by an electoless deposition process wherein, prior to the actual coating step, at least the surface of the support on which the metal layer is to be formed is subjected to roughening treatment e.g. by vapour blast using alumina powder, then to chemical treatment e.g. by immersing the support in a solution of an alkali metal such as sodium in either liquid ammonia or a polycyclic aromatic hydrocarbon such as naphthalene. The process is useful in the manufacture of printed electric circuit panels, windings of a ferromagnetic transformer core, or coaxial electric cables, or copper-faced gaskets of P.T.F.E. in the chemical industry.ALSO:A sodium-naphthalene complex, for use in a bath for chemically treating a support of polymerized fluorinated hydrocarbons prior to coating it with a metal layer, is prepared by stirring 23 g. of sodium metal cubes into a solution of 128 g. of naphthalene in 1 litre of tetrahydrofuran.
Patent GB-729324-A (GB)
Title: Improvements in or relating to hinged joints
IPC: E05D7/12
Filed: 1952-05-16
Abstract: 729,324. Boxes. BRITISH XYLONITE CO., Ltd., and BROWN, W. B. Aug. 13, 1953 [May 16, 1952], No. 12470/52. Class 18. [Also in Group XXV] The body 1 and lid 2 of a box made from synthetic plastic material are respectively formed with upstanding lugs 9 and 3, and are connected together by one or more hinges each of which comprises a pair of hinge plates 10 and 11, and a hinge pin 14 ; each hinge plate being formed with respective underturned flange parts 15, 17 and 16, 18 at opposite sides thereof parallel to the hinge axis, and which engage corresponding undercut surfaces 5 and 6 provided at opposite sides of said lugs. The arrangement is such that the hinge plates may be slid into position in a direction parallel to the hinge axis, and are held, when in position, by the engagement of spring tongues 19 on the outer edges of the hinge plates, with recesses 7 formed in the lugs.
Patent GB-344702-A (GB)
Title: Improvements in or relating to cooling means for gear units
IPC: F16N39/02
Filed: 1930-04-22
Abstract: 344,702. Cooling lubricant. FITZPATRICK, C. J., 3, King Street, Acton, London. April 22, 1930, No. 12477. [Class 12 (iii).] The lubricant into which dips gearing, such as a worm 11 and wheel 12, in a casing 10 is cooled by passing air or liquid by convexion or by force through a coiled or bent tube 28 immersed in the oil. The coil engages notches 27 in flanges 26 on the casing. In order for convexion produced by the warm oil to be effective, the outlet end 30 of the tube is higher in the casing than is the inlet end 29. A radiator may be arranged in the circuit externally of the casing. The oil level is adjusted by taps in the casing sides. The thrust bearing 14 for the worm shaft 13 is held between a flanged sleeve 17 and a cap 18.