baber/WOPTO huggingface dataset:
Patent GB-1086866-A (GB)
Title: Thermally controlled electric switch
IPC: H01H37/54
Filed: 1965-05-17
Abstract: 1,086,866. Thermal switches. FRATELLI BORLETTI S.p.A. May 17, 1965 [May 15, 1964], No. 20803/65. Heading H2B. A thermal switch has a concave bimetallic plate 1, which changes the direction of its concavity with a snap action when heated, and a movable contact 5 interposed between the bimetallic element 1 and a fixed contact 12, the movable contact 5 comprising a resilient projection 7 extending radially inwards from a ring (6) of electrically conducting material and adapted to be pressed against the fixed contact 12 by movement of the bimetallic plate 1 (see also Figs. 2, 3, not shown). The ring 6 of plate contact 5 is pressed against a circular seating 4 by a ring 8, being locked by an insulating cap 9 which in turn is held in position by the rim 10 of the body 3 of the housing, thus ensuring good electrical contact between plate contact 5 and housing 3. The switch closes a circuit from a terminal 13 to the body 3 and hence via the body of a motor vehicle on which the switch is mounted to its battery, the connection to earth being via a screw plug 15 or a flanged attachment 16 which connects body 3 to the surface of the body the temperature limit of which is to be signalled, the body 3 being adapted to be immersed in a fluid, e.g. engine oil or radiator water, of which the temperature is to be controlled.
Patent GB-1429863-A (GB)
Title: Lubricatn supply systems
IPC: F16C33/66
Filed: 1973-05-02
Abstract: 1429863 Lubricating GENERAL ELECTRIC CO 2 May 1973 [22 May 1972] 20815/73 Heading F2A [Also in Division F1] A lubricant supply system, e.g. for a gas turbine engine has a main reservoir which supplies lubricant to an auxiliary reservoir 42, there being a main lubricant conduit 60 leading from the auxiliary reservoir to a lubricating point, and an auxiliary conduit 64 also leading from the auxiliary reservoir to a lubricating point, means being provided for supplying a flow of air over the outlet of the auxiliary conduit to cause lubricant to flow therethrough. The arrangement is such that a flow of lubricant is maintained even in the event of failure of the main supply. The auxiliary conduit may have a relatively small cross-section. The air, which may be fed from the compressor of the gas turbine engine, which is used to cause flow through the auxiliary conduit may also assist, in conjunction with a labyrinth seal 46 in preventing foreign matter entering the lubricating point. Used lubricant may be recirculated via a conduit 93.
Patent GB-276970-A (GB)
Title: Adjusting devices for hydraulic variable speed driving mechanisms
IPC: F16H61/42
Filed: 1927-08-08
Abstract: 276,970. Waterbury Tool Co., (Assignees of Fowler, H. P.). Sept. 1, 1926, [Convention date]. Driving arrangements. - In appara. tus for driving hydraulically a number oi machines, or sections of machines, simultaneously, e.g. in paper making plants, means are provided whereby the speeds of the machines are adjusted individually or collectively. The hydraulic driving mechanism is. preferably of the type described in Specifications 13894/07, 13895/07, and 13897/07, [all in Class 69, Hydraulic machinery &c.], and the swashplates of the pumps or motors may be adjusted simultaneously by a shaft 30 connected by worm gearing to nuts 28, held against axial movement and engaging screwed spindles 26<1>. The spindles are jointed at 27, so that their upper portions may be rotated to obtain individual adjustment. Reference has been directed by the Comptroller to Specification 171,570.
Patent GB-802522-A (GB)
Title: Improvements in or relating to recovery of citric acid
Filed: 1955-07-20
Abstract: Calcium mono-acid citrate is precipitated from an aqueous solution of citric acid by heating the solution at a temperature of at least 40 DEG  C. either in the presence of calcium hydroxide, calcium oxide or calcium carbonate, wherein the amount of calcium present in the reaction mixture is not greater than two-thirds of that theoretically required for the complete neutralization of the citric acid to form tricalcium citrate, or in the presence of tricalcium citrate in an amount not exceeding one mol. per mol. of free citric acid present. Citric acid may be regenerated from the calcium mono-acid citrate, e.g. by treating the latter with a stoichiometric amount of sulphuric acid.  It is preferred to use reaction temperatures of above 70 DEG C., e.g. temperatures of 80 DEG  to 95 DEG  C. and improved results are obtained if the mixture to be converted to calcium mono-acid citrate is seeded with calcium mono-acid citrate.  The amount of calcium added in the form of calcium monoacid citrate for seeding is not to be considered in calculating the maximum amount of calcium which may be present in the reaction mixture to form the calcium mono-acid citrate.  In one method of operation a citric acid solution is divided into two parts, the first part, about two-thirds of the total, may be completely neutralized with calcium hydroxide, calcium oxide, or calcium carbonate, and the tricalcium citrate which precipitates may be filtered off and added to the remaining part of the original citric acid solution and the mixture heated to at least 40 DEG  C. to precipitate calcium mono-acid citrate.  In examples, calcium acid citrate is precipitated by (1) adding tricalcium citrate (1 mol.) to a solution of citric acid (1 mol.) in two litres of water and heating the mixture at 40 DEG  C. for 23 hours; (2) adding calcium hydroxide (1 mol) (or the equivalent amounts of calcium oxide or calcium carbonate) to a solution of one mol. citric acid in 1 litre of water and heating at 90 DEG  C. for 2 hours; (3) adding 0.6 mol. of calcium hydroxide to citric acid (1 mol.) dissolved in 1 litre of water and heating the mixture at 40 DEG  C. for 2 1/2 hours. In other examples: (4) and (5) about 5 per cent of the calcium hydroxide required to produce complete neutrality is added to a fermentation liquor in which citric acid has been prepared and the resulting precipitate of oxalic acid is filtered off and calcium mono-acid citrate is precipitated by adding tricalcium citrate to the filtrate while maintaining the mixture at 90 DEG  C. in (4) (or 85-90 DEG  C. in (5)) and adding some calcium mono-acid citrate as seed.
Patent GB-974907-A (GB)
Title: Fluid regulating valves
Inventor: SIMS RAYMOND BERNARD
IPC: B21B37/50
Filed: 1962-05-31
Abstract: 974,907. Valves. DAVY & UNITED ENGINEERING CO. Ltd. May 31, 1963 [May 31, 1962], No. 21004/62. Heading F2V. [Also in Division B3] A valve for regulating the pressure in an outlet 13 and suitable for use in an electrohydraulic system for measuring or controlling the tension of strip material in a rolling mill (see Division B3) has a sliding closure member 15 with a central band coacting with the outlet 13 and adjustably loaded by a spring 17 acting in opposition to outlet pressure admitted by a port 16 to the interior of the closure member to act upwardly on an annular area. Pressure in the outlet above or below that determined by the spring causes the valve member to rise or fall, respectively, to connect the outlet with an exhaust 14 or pressure supply 12. The spring is adjusted by an electric motor 24, handle &c., acting through gearing 23, 22 and a nut 21 which causes axial movement of a non-rotatable screw 18. To facilitate adjustment the spring reaction on the screw 18 is balanced by the admission of regulated pressure to a hollow portion 25b of a fitting over a reduced portion 25a of which the valve member 15 is slidable. The hollowportion 25b and the lower end of the bore through the valve member are closed by plungers 27, 26. The valve member has a dashpot 19 controlled by an adjustable screw 20.
Patent GB-1514764-A (GB)
Title: Thermal insulation element
IPC: F16L59/14
Filed: 1975-05-16
Abstract: 1514764 Thermally insulated pipes CARBORUNDUM CO 16 May 1975 [28 May 1974] 21014/75 Heading F2P [Also in Division F4] A thermal insulation assembly for a tube comprises at least one resilient flexible ring shaped insulation element consisting of a refractory fibrous material such as aluminium silicate, silica, alumina or glass, one side of each element being severed and the ring or rings being held under axial compression by means of either retaining rings of rigid refractory material at each end or at least one adjustable metal band. In a preferred embodiment a plurality of insulation rings 26 are mounted on a tube 30, such that the inner radially facing surface of the rings 26 contact the outer surface of the tube, and are maintained under axial compression by ceramic retainer rings 32 comprising two identical halves each having a raised shoulder portion 34 around which either a twist wire lock 40 or an adjustable metal band may be engaged to retain the ring 32 at a given location on the pipe. In order to facilitate installation the rings 26 are preferably severed at one side. The ring 26 may have a square or oval shaped opening and its outer periphery may be correspondingly shaped.
Patent GB-232105-A (GB)
Title: Improvements in and relating to means for repairing or reinforcing laces, twine, ropes and the like
IPC: A43C9/02
Filed: 1924-09-06
Abstract: 232,105. Briley, W. P. Sept. 6, 1924. Coupling.-A device for repairing boot &c. laces, twine, rope, &c. consists of a strip of metal 1, e.g. of brass or copper, having one of its faces provided with barbs 4. The strip 1 is wound with the barbed face inside into a helical coil of such a diameter as to fit over the overlapped ends 2 to be joined together and the coil is then twisted tighter by hand to grip the lace &c., or, alternatively, the strip may be wound around the overlapping ends. Such a strip may also be wound around a lace, rope, &c. to reinforce it against wear.
Patent GB-1469695-A (GB)
Title: Apparatus for testing paper thickness
IPC: G07D7/164
Filed: 1974-05-13
Abstract: 1469695 Testing paper thickness electrically OESTERREICHISCHE NATIONAL BANK 13 May 1974 [18 May 1973] 21082/74 Heading GIN Paper thickness testing apparatus comprises: a support having a reference surface; a leaf-spring having one end gripped and being so arranged that a sensing end urges a paper specimen against the reference surface; a Piezo-electric transducer engaging a surface of the leaf-spring at a position between its ends so as to act as a first bearing member; a second bearing member engaging the opposite surface of the spring; means to effect relative travel between the specimen-and the sensing end of the spring; and processing means to evaluate whether the transducer output lies within predetermined limits.  A paper specimen 6, which may have a pattern of thickness variations due to e.g. printing on watermarks, is passed between a drum 18, Fig. 2 and the sensing ends 3 of leaf-springs 10 gripped at their opposite ends 5 in a holder 9. Bearings 1 comprise Piezo-electric pick-ups sensing stress as a function of displacements of the sensing ends 3; bearings 2 have means for adjusting their separation a from the bearings 1 to vary the moment arms and thus the sensitivities. Pick-up signals after amplification at 11 are converted in A/D converters 12 and fed to a computer 13 which produces output signals 14 based on comparison of the test specimen measurements with signals derived in a corresponding way from a reference specimen (20) Figs. 3 and 4, (not shown). An incremental displacement pick-up 19 coupled to the drum 18 supplies a longitudinal displacement signal to the computer 13 for co-ordination with the thickness signals. Coarser variations, e.g. zero or double thickness, due to damage, folding, overlapping or dog-ears, are sensed by threshold circuits 15 which produce signals when the measured thicknesses respectively exceed lower and upper limits. A logic circuit 16, also receiving longitudinal displacement signals from the pick-up 19, provides an output 17. Output signals 16, 17 may be used to control deflectors (not shown) for sorting the specimens 6.
Patent GB-1045745-A (GB)
Title: Improved voltage generating device
IPC: G01N27/416
Filed: 1963-05-27
Abstract: 1,045,745. Batteries. ENERGY CONVERSION DEVICES Inc. May 27, 1963 [May 31, 1962], No. 21112/63. Heading H1B. [Also in Division G1] A voltage-generating device consists of a solid layer of lithium metal in contact with a layer of a lithium compound, other than lithium fluoride, and electrical connections to the two layers. The lithium compound is exposed to a moisture-containing environment and a D.C. voltage functionally related to the moisture content of the environment is said to be generated. Suitable compounds include the carbonate, hydroxide, orthosilicate, sulphate, acetate, metasilicate, metaborates, nitride, nitrate, oxide, orthophosphate and iodide of lithium, and mixtures of these compounds. One suitable mixture is formed by burning lithium in air or oxygen. The compounds may be fused and coated or sprayed on to the lithium metal member, or they may be mixed with an organic binder which is subsequently burnt off. Alternatively, a lithium metal member may be exposed to the atmosphere until a suitable layer of lithium compounds has formed. Iodine may be incorporated in the compounds, e.g. by exposing them to fumed iodine, and is stated to increase the generated voltage. In Fig. 2 (not shown), a lithium disc or sheet 21 is attached on one side to a conductive sheet or disc electrode 23, and is provided on the other side with the layer 22 of lithium compound, to which an electrode 24 is attached. A cover 27, e.g. of glass, encapsulates the lithium metal and compound layers and is filled with helium, argon or nitrogen, containing moisture vapour.
Patent GB-716939-A (GB)
Title: Improvements in or relating to high frequency radio aerials
Inventor: MARINER PETER FREDERICK
IPC: H01Q19/195
Filed: 1952-08-22
Abstract: 716,939. Aerials. ELLIOTT BROS. (LONDON), Ltd. Aug. 24, 1953 [Aug. 22, 1952], No. 21180/52. Addition to 700,868. Class 40 (7) The invention consists of a radio aerial system of the type described in the parent Specification wherein the auxiliary reflector placed in front of the waveguide horn source collimates the waves and directs them through the half-wave plate to the main reflector which reflects them back through the " plate." The plate rotates the plane of polarization of the waves through 90 degrees and enables them to pass back through the auxiliary reflector, and the main reflector and halfwave plate are mounted so that they may be inclined to the axis of the auxiliary reflector. In the embodiment shown, energy is propagated along waveguide 2 having shorter sides 2a and radiated by horn 3 in the direction of auxiliary reflector 4. Reflector 4 comprises a number of flat parallel metallic strips 5 arranged in a solid dielectric supporting medium with their edges nearest the horn 3 contained in a paraboloidal surface. The spacing between adjacent strips 5 is somewhat less than half a wavelength and they are located in planes parallel to the walls 2a so that energy from the horn is reflected as a parallel beam towards the main reflector 1 which is apertured to receive the primary element 3. Above the reflector 1 is placed a half-wave plate 7 with its parallel metallic strips 8 in planes at 45 degrees to those containing the strips 5. The beam passes through the half-wave plate, is reflected by the reflector 1, and then passes back through the plate, suffering a total change in its plane of polarization of 90 degrees which enables it to pass out through auxiliary reflector 4 without substantial loss. The main reflector 1 and halfwave plate 7 are secured together to form a reflecting unit which is mounted on trunnions 10 received in bearings 11 in a frame 12 so that the unit can rotate about an axis parallel with the front edges of strips 8. The frame 12 is itself provided with trunnions 14 supported in bearings 15 in a fixed support so that angular movement of the reflecting unit is possible about two axes at right angles. The movement may be effected by operating motor 17 coupled to a cam followed by finger device 19, and motor 21 directly driving trunnion 15. The auxiliary reflector 4 may constitute the front portion of an aircraft radome and the half-wave plate be constructed in " eggbox " form if desired.
Patent GB-250093-A (GB)
Title: Improvements in or relating to roll stands for printing presses
IPC: B65H23/08
Filed: 1925-08-24
Abstract: 250,093. White, A. E., (Cline Electric Manufacturing Co.). Aug. 24, 1925. Feeding webs.-A number of web rolls supplying a printing-press are mounted on a rotatable support and the roll in use is braked by a tensioned apron engaging the roll surface, the apron serving also as a support against which the web is pressed when a new roll is brought into position to be attached to the expiring web. Means may be provided for increasing the braking pressure of the apron when the speed of the press is abruptly reduced. The roll in use and two reserve rolls are mounted in end supports 3 on a shaft 1 rotatable by a motor 7 and movable endwise for margin adjustment of the web by a motor 8. The roll in use is braked by a stationary apron 9 or a number of side by side aprons tensioned by weights 12, or by springs 14, Fig. 5, connected to a cross bar 13 to which the aprons are attached by springs 16. The springs 14 may be anchored to a fixed member but to enable an increased braking pressure to be applied when the press is stopped or its speed suddenly reduced, they may be attached to weighted levers 17, normally held up by latches 20 controlled by solenoids 21 adapted to be excited when the switch of the press stopping means is actuated so as to release the levers 17 and allow them to drop. In a modification, the levers 17 are positively operated by solenoids.
Patent GB-1515901-A (GB)
Title: Apparatus for controlling oscillation of a rotatably supported shaft
IPC: F16H57/021
Filed: 1975-05-19
Abstract: 1515901 Bearings CATERPILLAR TRACTOR CO 19 May 1975 [24 June 1974] 21268/75 Heading F2A [Also in Division B7] In an assembly comprising a rotatably supported shaft subject to oscillation (e.g. a transmission shaft for a tractor), there is provided a further support body having means for exerting a radial preload force on said shaft. The further support body comprises a needle bearing 106 mounted in a bearing housing 82 with the interposition of a rubber bush 101. The bore of the rubber bush is eccentric with respect to the bush's outer surface 116 so as to force the shaft out of alignment to provide a radial preload on the bearing 106. The preload force can be adjusted by removing bolts 86 which secure the bearing housing 82 to a frame 76, rotating the bearing housing with respect to the frame, and reinserting the bolts 86 in different bores.
Patent GB-136294-A (GB)
Title: Improvements in and relating to the Cooling of Internal Combustion Engines.
Inventor: SALWAY ALBERT EDWARD
IPC: F01P1/02
Filed: 1918-12-19
Abstract: 136,294. Salway, A. E. Dec. 19, 1918. Cylinders, heating and cooling.-Air is drawn into the cylinder through a valve b and expelled through the exhaust valve h during one or more revolutions after each four-stroke cycle. The air is drawn through passages in the wall of the cylinder, and may be cold or heated air, its entrance being controlled by valves i.
Patent GB-213590-A (GB)
IPC: C09K23/00
Abstract: 213,590. Bechhotd, H., Gutlohn, L., and Karplus, H. March 29, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Emulsions; making.-Substances are emulsified' by dissolving them, together with an aliphatic or sulphonated aliphatic acid of high molecular weight, such as oelic acid, stearic acid, or sulphonated ricinoleic acid, in an auxiliary solvent, for example tetrahydronaphthalene, liquid paraffin, or oil of turpentine, and mixing the solution with a solution of an alkali or alkaline salt in proportion less than that equivalent to the acid. Examples of alkalis and alkaline salts are caustic alkalis, alkali carbonates, ammonia and alkali borates. In examples paraffin wax and oleic acid are dissolved in paraffin oil and mixed with soda-lye; thymol and naphthalene are emulsified by solution together with oleic acid in turpentine oil and admixture with soda-lye; and paraffin wax with sodium oleate and oleic acid ia dissolved in paraffin oil and mixed with water. The emulsions thus produced may be mixed with water and may be used for impregnating wood, fibres, fabrics, paper &c. The emulsions are stable against electrolytes and chlorates may therefore be added to increase the inflammabilay of the material impregnated.
Patent GB-1574205-A (GB)
Title: Plug and socket connector
IPC: H01R13/71
Filed: 1978-05-23
Abstract: In order to bridge measurement circuits for current measurement, a plug device is provided consisting of two parts (1, 6) which can be plugged into one another. One part (1) is provided with contact springs (2) and the other part (6) with contact blades (7). A compression spring (3) is provided between the two contact springs, which are arranged at a distance from one another. A contact link (4) is arranged underneath the contact springs. An actuating piece (9) for moving the contact link is provided on the plug part (6). During insertion, the actuating piece presses against the contact link and thus interrupts the connection between the contact springs. Since the contact link is constructed as a leaf spring having arc-shaped curvature (5), the contact link carries out a rolling movement on the contact springs, as a result of which the contact-point region is self-cleaning. <IMAGE>
Patent GB-225275-A (GB)
Title: Improvements in two stroke cycle internal combustion engines
IPC: F02B25/18
Filed: 1923-08-27
Abstract: 225,275. Bradshaw, G. Aug. 27, 1923. Single-acting piston pumps.-In internal-combustion engines wherein the piston 7 works within a sleeve valve 8 attached to a pump piston 9, the sleeve slides between a depending head 14 and the cylinder, a chamber 15 of substantial volume being left at the top, which may be used as a pump chamber for oil. The gaskets 14<c> may be of different thickness to adjust the position of the head in the cylinder.
Patent GB-1087889-A (GB)
Title: Process for producing alkyl-aryl sulphonic acids and sulphonates
IPC: C07C309/31
Filed: 1965-05-21
Abstract: Alkyl-aryl sulphonic acids and salts of formula <FORM:1087889/C2/1> in which n is an integer exceeding 9, R1 is hydrogen or an alkyl radical and X is hydrogen or the group <FORM:1087889/C2/2> in which R11 is hydrogen or an alkyl radical, and X1 is an element of Group II or IV of the Periodic System, such as calcium, barium, zinc or tin, by contacting the impure acid containing excess sulphonating agent consisting of sulphuric acid or oleum, in the presence of an organic solvent inert to the sulphonating agent, with an anion-exchange resin until substantially all of the sulphonating agent is removed from the product by the resin, and regenerating the exhausted resin by washing it with deionized water until the effluent is substantially non-acidic. Suitable solvents are, for example, dichloroethane or heptane.  Preferably the excess sulphonating agent is separated in three steps: (a) the sulphonation mixture is decanted at 20-80 DEG C. so that most of the excess sulphonating agent separates as a heavy layer; (b) the partly purified mixture is diluted with an inert solvent as defined above and the resulting mixture is allowed to stand after which a further portion of the excess sulphonating agent can be separated by decantation; and (c) the remaining mixture is treated with the ion-exchange resin.