baber/WOPTO huggingface dataset:
Patent GB-527333-A (GB)
Title: Improvements in or relating to calorimetric apparatus
IPC: G01N25/28
Filed: 1939-04-06
Abstract: 527,333. Gas calorimeters. IGRANIC ELECTRIC CO., Ltd. April 6, 1939, No. 10781. Convention date, April 30, 1938. [Class 97 (iii)] [Also in Group XXXVIII] In a gas calorimeter wherein measured quantities of test gas and air are delivered to a burner 54 from measuring devices 26, 27 respectively under variable conditions of temperature, pressure and saturation and the heating value of the gas is determined by a thermocouple connected in a potentiometer or other measuring circuit, a variable resistance thermometer RT is provided to adjust the current through the potentiometer in such a manner that the errors introduced in the generated e.m.f. of the thermocouple due to variable temperatures of the tank 24 are compensated throughout the total range of test gas heating values. As shown in Fig. 1, the measuring devices 26, 27 are driven through gearing by a common motor 30 and like conditions of temperature. Pressure and humidity of the test gas and air are maintained by the tank water 31. The products of combustion mix with the excess air to form the heat absorbing medium which passes into intimate contact with the hot junction HJ of the thermocouple. The cold junction CJ and the compensation thermometer RT are contained in a cup 61 immersed in the tank liquid. The e.m.f. generated by the difference in temperature between the functions of the thermocouple is a measure of the heating value of the test gas and is recorded as such by automatic operation of the balancing potentiometer S1 and recorder 72. The temperature rise affecting the thermocouple decreases with increase of tank temperature and to compensate for this error, thermometer RT, which has a positive temperature coefficient, automatically adjusts the current through the potentiometer. The water evaporated from the tank 24 is replaced periodically from the auxiliary tank 24b by a pivoted tube 64, which carries a cup 62 and is periodically raised by a pin on a gear wheel driven by the motor 30 to discharge small quantities of water into the main tank. Excess water over that required to replace evaporated water flows over the overflow weir 70 to maintain a constant water level in the main tank. The calorimeter is also adapted for giving correct readings for gases of different compositions with the assurance that once calibrated for a particular gas, correct reading throughout the whole recording range is ensured This is accomplished by appropriately adjusting the values of the resistances for the different gases. In Fig. 7 (not shown) the potentiometer controlled instrument is replaced by a milliammeter.
Patent GB-681223-A (GB)
Title: Improvements in or relating to magnetic sweeping devices
IPC: A47L13/41
Filed: 1950-05-02
Abstract: 681,223. Magnetic road sweepers. GENERAL ELECTRIC. CO., Ltd., and AMIES, D. May 2, 1951 [May 2, 1950], No. 10802/50. Class 107 [Also in Groups II and XXXV] A device for sweeping or picking up magnetic material comprises at least one magnet mounted on a wheeled trolley and having a poleface spaced a short distance from a surface over which the device is traversed. As shown a pair of electromagnets may be mounted on a cross-bar 17 arranged transversely of a trolley having wheels 19, a casing 3 for batteries and an adjustable handle 5. A switch 12 may be incorporated in the handle to open and close the electric circuit to the coils of the electromagnet, which may be in series, and also to operate an indicating lamp 14. A changing plug for the batteries may also be provided. The cross-bar may be adjusted by means of nuts 15 to vary the distance between the pole faces and the surface. The magnets may be arranged on a trailer pulled by a tractor for use on roadways and airfields. The switch may be reversing in order to ensure that collected material is dropped off when required.
Patent GB-1176832-A (GB)
Title: An Electronic PI Controller.
IPC: G05B11/42
Filed: 1967-03-08
Abstract: 1,176,832. Automatic control. ARCA PREMONCONTROLE S.A. March 8, 1967 [March 21, 1966], No.10833/67. Heading G3R. In a system in which a variable is controlled by a signal dependent on the. difference and the integral of the difference between the value of the variable and a set value, a further control signal, developed when the first signal is outside predetermined limits, restores the first signal within the limits and persists temporarily thereafter. In Fig. 4, a voltage VM dependent on the magnitude of a process variable is compared with a voltage V c  corresponding to a desired value and any difference is effective through an inverter F, amplifier G and converter N to control a regulator (not shown) so as to tend to maintain the variable at the desired value. A voltage V cr  dependent on the amplifier output is fed back to the amplifier through a resistance-capacity network AP, AI (not shown in detail) so that the control system has an adjustable proportional-integral characteristic. To prevent overloading of the integrator during large disturbances, portions of the feedback voltage are also applied through resistancecapacity delay networks Ph, Ch and Pb, Cb to transistor amplifiers Gh, Gb which are respectively operated by signals above and below predetermined amplifier threshold values to produce voltages across a resistor R which buck or boost the input to amplifier G as necessary to counter the effect of the disturbance.
Patent GB-1345383-A (GB)
Title: Drum brake for vehicles
IPC: F16D65/827
Filed: 1971-04-22
Abstract: 1345383 Cooling drum brakes BAYERISCHE MOTOREN WERKE AG 22 April 1971 [28 April 1970] 10833/71 Heading F2E A drum brake comprising two adjacent drums 1, 2 connected to each other, wherein the mutually facing central web region of at least one of the drums has substantially radially directed open sided cooling air channels the open sides being closed by the surface of the web region of the other drum to form air ducts 5 having air inlets close to the axis and air outlets close to the outer periphery of the drum or drums. The air ducts 5 are formed in ribs 10 of the drums 1, 2 and are connected to inlet apertures 7 by axial passages 6. The ducts 5 are peripherally staggered, Fig. 5, and ribs 8 in one or both ducts may be provided. Air to the inlet aperture 7 enters a cup-shaped annulus 16, or passes around a cup-shaped plate 15. Brake dust is removed from the drums by air passing through bafflles between the drums 1, 2 and carrier plates 11<SP>1</SP>, 11 around the linings and into the radial ducts 5 through part-axial, part-radial passages 22. Dirt is thrown out of the brake through passages 20. The drums 1, 2 are rivetted or bonded together.
Patent GB-1502423-A (GB)
Title: Optical coupling devices
IPC: G02B6/42
Filed: 1975-03-10
Abstract: 1502423 Light guides COMMUNICATIONS PATENTS Ltd 10 March 1975 [12 March 1974] 10861/74 Heading G2J A device for coupling the output of a light source 1 to an optical fibre or bundle of fibres 2, comprises a body of transparent material, e.g. glass, formed from two or more solid parts 3, 4 and having two cavities 8, 9 for positioning the source and the fibre, the part 3 having a reflective surface 12 for directing light through the body towards the fibre. In use, the parts are adhered or clamped together, and an index-matching material may be provided between the parts or in the cavities. The source 1 is arranged so that all the light emitted is directed towards the surface 12. The body is preferably ellipsoidal, the source 1 and end-face 10 of the fibres 2 being located at the focii of the ellipsoid. The part 4 may be frustro-conical. The arrangement is such that adjustment of the relative portions of the two parts enables the image of the source to be focussed on the end of the fibres. In one modification, Fig. 2 (not shown) the part 4 supports a plano-convex lens (13) at the end adjacent the part 3, the lens having a refractive index less than that of glass, e.g. made of polymethylmethacrylate. In a second modification, Fig. 3 (not shown) the lens (13) is convex, one face mating with a concavity in the part 3.
Patent GB-1413482-A (GB)
Title: Treatment of foodstuffs
IPC: A21D8/06
Filed: 1973-01-15
Abstract: 1413482 Baking bread; cooling baked bread TWEEDY OF BURNLEY LTD and W BRADSHAW 15 Jan 1973 10904/75 Divided out of 1413481 Headings A2A and A2E The normal cooking time for a foodstuff, e.g. bread, consists of a first stage during which cooking takes place and a shorter second stage for drying and stabilisation. According to this invention the foodstuff is removed from the oven at the end of the first stage and, without deliberate precooling, subjected to rapid cooling under reduced pressure, which treatment also effects the necessary drying and stabilisation of the foodstuff.
Patent GB-637187-A (GB)
Title: Improvements in or relating to machines for sharpening saws
IPC: B23D63/12
Filed: 1947-04-26
Abstract: 637,187. Grinding and polishing. CAMPBELL, D. April 26, 1947, No. 11237. [Class 60] The motor E and disc D of the saw-sharpening machine of Specification 560,971 are rotatable as a unit about a longitudinal axis 7 as well as a transverse axis 26 relative to the part 3. The disc is mounted on an axle journalled in a part 4 and is driven from the motor by a belt passing through an arcuate slot 31 in a plate 25 which pivots about the axis 26. The part 4 and the motor are secured at opposite ends of a shaft (not shown) journalled in the plate 25 which is provided with indicator plates 36 to check the angle to which the disc is set. These plates also show at 35A the direction in which the teeth of the saw should face. Locking screws are provided for the parts 3 and 4.
Patent GB-686828-A (GB)
Title: Improvements relating to devices used for convergent beams therapy with moving beam technique
IPC: A61N5/01
Filed: 1949-04-27
Abstract: 686,828. X-ray apparatus. SIEMENS REINIGER-WERKE AKT.-GES. April 27, 1949 [Nov. 26, 1948], No. 11249/49. Class 98 (i). [Also in Group VI] In a device for irradiating a part of a body continuously while keeping the irradiation of other parts to a minimum, the source of radiation is moved along a spiral path around the mean axis of the space swept out by the beam while so directing the beam that it always passes through a fixed point located (in the use of the device) at the seat of the disorder to be treated. Radiation may consist of X-rays, electrons, neutrons, ultrasonic sound waves, electromagnetic radiation and the like. The source of rays may be moved, during the irradiation, over a part of the surface of a sphere. In one form of the device, the inner surface of a hemispherical housing has a spiral track. A unit consisting of a source of rays and driving motor moves on the track by means of a spur-wheel driven by the motor. In the form shown, the apparatus has a channelsectioned ring 3 with rollers 4 whereby it may rotate in a fixed channel-sectioned ring 5. A pair of parallel arcuate channel-sectioned rails 1 act as guides for a carriage 7 having rollers 8 engaging rails 1 and carrying an X-ray tube in a casing 9. The tube is rotatable about the axis 31 of the cone of rays, which passes through the centre 11 of the arcuate rails 1. The carriage 7 moves over a part of rails 1; on the opposite side of the rails a gear-box 13 is mounted together with an electric motor (not shown) with a driving shaft 13 driving a shaft 18 through a worm drive. One end of shaft 18 has a pinion 19 engaging a toothed rack 20 on ring 5 whereby ring 3 is rotated by the motor. The other end of shaft 18 is geared to a shaft 24 carrying a cam at each end. The carriage is connected to the cams by a cord 27, and by a cord 28 passing over a pulley 29 on ring 3 opposite the gear-box. When the motor is started, ring 3 rotates and cords 27, 28 are wound and unwound at equal rates to move carriage 7, the movement becoming faster as the carriage approaches the central position. The motor may then be reversed. Preferably, switches (not shown) operated by the carriage switch the X-ray tube on just after the motor starts and off just before the carriage reaches the central position, and at that position switch off or reverse the motor. Supply to the motor is by moving contacts travelling on rails connected to ring 5. To prevent twisting of the supply cable to the X-ray tube, the tube may be rotated about its axis through 180 degrees during half a revolution of ring 3, and rotated oppositely during the other half of the revolution. For this purpose the X-ray tube carriage has rollers engaging the inner surface of a housing (not shown), which surface is partly cylindrical but has a space in which the tube can turn.
Patent GB-234795-A (GB)
Title: Transformer winding for very high voltages
IPC: H01F38/18
Filed: 1925-04-30
Abstract: 234,795. Maschinenfabrik Oerlikon. May 28, 1924, [Convention date]. Systems depending on the use of static transformers.-Transformers for high voltages have the end of the high-tension winding 2 connected to the middle of the low-tension winding 1 and to earth E, capacity current thereby flowing through both halves of the winding 1 to earth and setting up a field corresponding to the leakage. In Fig. 2 the three intercoupled transformers C - - C have their high-tension windings connected in series and A, B have a second lowtension winding 3 the potential of which depends on that of the winding 1 to which it is connected.
Patent GB-591305-A (GB)
Title: Spring nut with locking spur
IPC: F16B37/02
Filed: 1945-05-05
Abstract: 591,305. Locking nuts. ADEL PRECISION PRODUCTS CORPORATION. May 5, 1945, No. 11498. Convention date, Oct. 31, 1944. [Class 89 (i)] Relates to sheet metal nuts of the type having resilient bridge portions 10, 11 stamped outwardly from the body 9 and having the opposed edges shaped at 12 for locking engagement with the bolt thread, and consists in providing the part 11, that lies nearer to the article 14 to be clamped, with an inturned formation 17 so that an edge 19 penetrates the article and locks the nut against relative rotation.
Patent GB-551832-A (GB)
Title: Manufacture and application of benzyl phenyl ethers
Filed: 1941-09-09
Abstract: 551,832. Polychlorbenzylphenyl ethers ; ; moth-proofing. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E. 1.). ). Sept. 9, 1941, No. 11528. [Class 2 (iii)] [Also in Group VIII] Polychlorbenzyl phenyl ethers are prepared by reacting a polychlorbenzyl chloride having 2-5 chlorine atoms in the aromatic ring, with a phenol which may carry one or more nuclear methyl groups in the presence of an alkali or an alkali metal alkoxide. Examples are given in which (1) Trichlorobenzyl chloride is condensed with phenol in the presence of sodium hydroxide. (2) Trichlorobenzyl chloride is condensed with phenol in the presence of an alcoholic solution of sodium hydroxide. (3) As in example (2) but using sodium metal instead of sodium hydroxide. (4) Trichlorobenzyl chloride is condensed with phenol in the presence of a solution of sodium in dioxane. (5) Trichlorobenzyl chloride is condensed with phenol in the presence of an acetone solution of potassium carbonate. The compounds are powerful moth-proofing agents and examples are given to show the efficacy of the compounds in this respect.
Patent GB-556377-A (GB)
Title: Improvements in and relating to lead-in arrangement for electric discharge devices
IPC: H01J5/40
Filed: 1942-08-18
Abstract: 556,377. Uniting metal to glass by heat. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 18, 1942, No. 11569. Convention date, Aug. 26, 1941. [Class 36] An electric conductor, sealed in glass, has an integral enlargement or flange in intimate contact with the glass. The flange may be formed by upsetting the conductor. The glass beads 47, Fig. 5, are heated and pressed through apertures 15 in the depressions 40 of the metal header 11  until they contact with the flanges 18 of the conductors 14. These conductors pass through guides 33, 34 on the jig to rest on a member 39, the header being supported by rods 44 and by a lug 42 engaging the guide pin 13. The conductors may be fluted as 58, Fig. 9, in the region of the glass bead. The glass may be a lead glass comprising 45 per cent SiO 2 , 12 per cent K 2 O, 6 per cent Na 2 O, 32 per cent PbO and 5 per cent CaF 2 , or the glasses described in Specification 536,362 may be used.
Patent GB-1365004-A (GB)
Title: Apparatus for handling a sheet of glass or like plastic or flexib le material
IPC: C03B15/18
Filed: 1972-03-13
Abstract: 1365004 Glass sheet manufacture LIBBEYOWENS-FORD CO 13 March 1972 [5 April 1971] 11582/72 Heading C1M In the production of glass sheet in which the continuous glass sheet is deflected over a stationary bending member 28 while in a highly heated condition, particularly in Colburn sheet drawing apparatus or at the end of a float glass bath; and in which the bending member 28 has an elongated slot 36 extending longitudinally of the curved surface of the member 28 through which fluid is admitted to form a fluid film between the curved surface and the glass sheet, the member 28 has removable inserts 59 flanking and forming the side walls of the slot 36 at each end of the bending member 28, the outer surfaces 60 of the inserts 59 being flush with and a continuation of the adjacent curved surface of the member 28. These end sections of member 28 have more wear than the rest of the member 28 and the inserts 59 may be of more durable material than the member itself, but of matching expansion characteristics, and may be of a stainless steel alloy with an outer coating of an alloy containing in percentages by weight: Ni 63-73; Cr 15-22 and B 3-5. As disclosed, in Colburn apparatus, the slot 36 has inner slots 37 flanked by nuts 38 over the main section and end holes 39 and the interior of member 28, which is a roller, which can be rotated in the initial start-up of turning the glass sheet from vertical to horizontal, is maintained at a constant pressure plenum. As disclosed in Specification 1,144,714, the surface of roller 28 may be contoured and as in Specification 1,225,300, a mixer insert 41 may be provided, which has flanges 42 in grooves 45 extending the full length of slot 36 and in the inserts 59, joined by a U-shaped section 43 with apertures 54 each side through which fluid is expelled into slot 44. A plug 46 closes the end of slot 36. The inserts 59 are slid into position by means of tongues 61 engaging matching grooves 62 in the wall 35 of roller 28 and are held by cap screws 63 which overlap the ends of tongues 61. The ends of roller 28 include knurled sleeves 30 and stationary collars 32.
Patent GB-974289-A (GB)
Title: Hose clamp
IPC: F16L33/025
Filed: 1963-03-25
Abstract: 974,289. Band clamps. E. T. ARMSTRONG. March 25, 1963, No. 11650/63. Heading E2B. A hose clamp consists of a metal band having its greatest radial thickness midway between its ends so as to maintain substantially circular form internally upon change of diameter. As shown the band is tightened around a hose to hold the latter on a pipe, by deformation of an integral loop of the band, Figs. 3, 6, 8, 10 and 12 or by a nut and bolt connection, Fig. 4, at flanges at the free ends of the band. The Specification includes a formula by which the thickness of the band at a selected point intermediate its ends, may be calculated.
Patent GB-642357-A (GB)
Title: Improvements in or relating to processes of preparing cycloalkyl ethers of p-hydroxybenzoic compounds and the compounds resulting from said processes
Filed: 1948-04-28
Abstract: Cyclopentyl and cyclohexyl ethers of p-hydroxybenzoic acid and its esters are manufactured by reacting p-hydroxybenzoic acid or an ester thereof (preferably an alkyl ester in which the alkyl group contains 1-6 carbon atoms, e.g. the ethyl ester) with cyclopentene or cyclohexene in the presence of boron trifluoride or concentrated sulphuric acid.  The reaction is preferably effected with heating (e.g. to about 40-125 DEG  C.) and agitation in the presence of a non-reactive solvent (e.g. benzene, toluene or a saturated hydrocarbon boiling above 40 DEG  C.), using a moderate excess of the cycloalkene and 0.25-0.5 equivalent of catalyst relative to the other reactant.  The cycloalkene may be produced in situ from cyclopentanol or cyclohexanol when working in the presence of a sufficient large amount of concentrated sulphuric acid.  Examples illustrate the various embodiments of the invention.
Patent GB-275330-A (GB)
Title: Improvements in connection with propulsion systems and propellors
IPC: B63H23/00
Filed: 1926-05-05
Abstract: 275,330. Staunton, P. M. May 5, 1926. Drawings to Specification. Propelling by forming vacuum ahead.-Propeller systems in which a propeller in a chamber containing a fluid sets up thrust by negative pressure is characterized by the use of an elastic fluid under pressure in the chamber. The apparatus described is identical with that in Specification 253,157, but the chamber is supplied with a. steam inlet and means for discharging condensates.
Patent GB-174905-A (GB)
IPC: C02F1/48
Filed: 1921-12-15
Abstract: 174,905. Schnetzer, K. Jan. 29, 1921, [Convention date]. Drawings to Specification. Incrustation, preventing.-The boiler or other apparatus to be protected is connected at one or more points to the negative pole of an insulated source of direct current, the postive pole remaining free. A shunt wound dynamo designed to give under-running conditions a potential difference of say 225 volts on a volt meter shunted across its terminals may be used. The negative terminal is connected to the shell of the boiler &c. at any number of points, while the negative is entirely free and unconnected.
Patent GB-1191532-A (GB)
Title: Improvements in Roller Blinds.
Inventor: COOPER EDWARD JAMES
IPC: E06B9/42
Filed: 1967-03-14
Abstract: 1,191,532. Roller blinds. G. HALL & CO. Ltd. 6 Feb., 1968 [14 March, 1967], No. 11825/67. Heading A4B. A roller blind 3 has an open ended, moulded plastics, bottom rail 1 in the upper portion 6 in which the blind 3 is retained by laths 5 or 4 secured to the blind and in which a depending trim strip 9 is secured in the lower portion 7 of the rail 1 by laths 11 or 10 secured to the strip 9. In one embodiment, Fig. 1, laths 5, 11 are secured respectively to the lower edge of the blind 3 and the upper edge of strip 9. In another embodiment, Fig 2, the blind 3 passes around a lath 4 in the upper portion 6 and then over an outer face 13 of the rail 1 to be retained by a lath 14 attached to the free edge 12 of the blind 3 in the lower portion 7. In a modification the blind 3 passes around the lath 14 and its free end passes out through a bottom slot 8 to provide the trim strip. In another modification of the arrangement of Fig. 2, the strip 9 passes around its retaining lath 10 and then out of the rail 1 to cover the outer face of the rail opposite the face 13 and to be finally secured to the blind lath 4.