baber/WOPTO huggingface dataset:
Patent GB-975317-A (GB)
Title: Improvements in or relating to the production of sulphur trioxide
IPC: C01B17/90
Filed: 1961-08-24
Abstract: Liquid sulphur trioxide is produced by distilling oleum and controlling the distillation according to the dielectric constant of the product or the liquor remaining during the distillation. The distillation is preferably done in at least two stages, the dielectric constant of the product or liquor remaining in the second stage being used for control purposes.  The control may be effected by running off the liquor remaining in the distillation or second distillation stage or by altering the temperature of the distillation. The measurements may be made continuously or intermittently.  The free sulphur trioxide content of the oleum may be between 5 and 65% by weight and the temperature of the distillant coolant is between 28 DEG  and 37 DEG  C. A stabilizer may be added to the liquor or product, e.g. a carbonyl halide or carbon tetrachloride. Sulphur trioxide of very low acid content, e.g. down to 20 to 30 p.p.m., is obtained.ALSO:Liquid sulphur trioxide, mixed with a small proportion of sulphuric acid, is produced by distilling oleum, and the impure sulphur trioxide is then re-distilled in a second still which is controlled by a device for measuring the dielectric constant of the liquid in the second still, or of the final product.  The control prevents the accumulation of acid in the second still, and is effected either by running off the liquid from the second still, or by varying the heat input to the still.  The measuring device preferably comprises a pair of platinum electrodes, immersed in the liquid, which are connected to a relay via a variable frequency oscillator circuit adjusted to operate the relay at a given dielectric constant.
Patent GB-1082141-A (GB)
Title: Brake tester
IPC: G01L5/28
Filed: 1964-08-04
Abstract: 1,082,141. Testing motor vehicles. CLAYTON MANUFACTURING CO. Aug. 4, 1964 [July 18, 1963], No. 30607/64. Heading G1W. In a combined dynamometer and brake tester apparatus for testing motor vehicles, pairs of longitudinally aligned rollers 18, 46 and 16, 44 are arranged in such a way on a framework to be engageable with vehicle wheels mounted on a common axis that a torsionally elastic shaft 88 connecting the rollers 18, 46 can be arranged to twist by an amount according to the inequality in the braking of the wheels. An absorption dynamometer 34 can be arranged to give an indication of the torque developed by the wheels. In testing two wheels of a vehicle which are mounted on a common shaft and which receive power from the engine of the vehicle, the wheels are cradled in the rollers 16, 18 and 44, 46 and the wheels are driven to rotate the rollers. The power absorption dynamometer 34 is releasably engageable with the rollers 16 and 44 for measuring the torque developed by the driven wheels. The brakes of these wheels are tested for equality of braking by observing the amount of relative rotation between the rollers 18 and 46 on applying the brakes when the wheels are rotating and when the dynamometer is disengaged with its associated rollers. Splined and couplings 86, 94 (Fig. 3) on each end of the torsion shaft 88 engage non-rotatably with splined hubs 80, 92 mounted on shafts of the rollers 18 and 46 and a torque tube 102 on the shaft has one of its ends 104 welded to the coupling 94 whereas the other of its ends rotatably engages the coupling 86. Twisting of the shaft 88 due to unequal braking causes the other end of the torque tube 102 to rotate relative to the coupling 86 and the relative rotation is detected by means of a photoelectric device 122 activated by light passing through slots in discs 108, 110 attached to the tube 102 and the hub 80 respectively. The activation of the photo-electric device produces a deflection on a meter 124 proportional to the inequality of the brakes. A motor or engine 100 may be connected by means of another elastic shaft 96 to the roller 46 in order that wheels which do not receive power from the vehicle to which they are attached can be tested. A meter 124a activated by a photo-electric cell 122a gives an indication of the total effectiveness of the brakes of such wheels. Alternative embodiments are described in which dynamometers are differently connected and in which elastic shafts are differently arranged.
Patent GB-737588-A (GB)
Title: Improvements in or relating to electric discharge tubes for use at very high frequencies and to circuits for such tubes
IPC: H01J21/14
Filed: 1952-12-03
Abstract: 737,588. High-frequency discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 3, 1952 [Dec. 6, 1951], No. 30657/52. Class 39 (1). An electric discharge tube for use as a dynatron oscillator at frequencies up to 1000 mc./sec. comprises an electron gun 3 and a cylindrical anode 4 arranged between two mica centring members 17 and 18. Cylindrical screens 5 and 6 form prolongations of the anode inside the tube and an external screen 7 forms a prolongation of the anode outside the tube providing a means of connection to a coaxial line 2. The screen 5 is closed at the end by a metal plate 8 in which is secured a caesium pill and to which is secured a barium getter holder 21. The electron gun 3, Fig. 2, comprises a screen 13 and a cathode 12 emitting a ribbon-shaped electron beam which passes under the control of intensity governing plates 14 and concentrating plates 15 connected to the cathode through a slit 22 in an acceleration electrode 16 and a slit 11 in the anode 4 to a secondarily emissive auxiliary cathode 9 formed by a U-shaped strip of copper-plated nickel, the limbs of which serve as cooling members and are soldered to a supporting pin 10 which passes through the bottom of the tube envelope. The anode 4 of copper-plated nickel, blackened on the outer side to improve thermal radiation, is coaxial with the pin 10 and is welded to two or more pins a which also pass through the bottom of the tube envelope and serve to support the screens 5, 6 and 7. Mica member 17 has two apertures 19 (shown dotted in Fig. 2) to allow caesium vapour to pass from the pill to the auxiliary cathode 9 for activating purposes, and slits 20 are provided in mica members 17 and 18 opposite the slit 11 in the anode 4 to reduce electrostatic leakage and high frequency losses. The portion of the supporting pin 10 outside the tube envelope together with the coaxial screen 7 provide a means of direct connection to the coaxial line 2.
Patent GB-881503-A (GB)
Title: Treatment of chlorine-containing polymers
IPC: C08F8/06
Filed: 1959-09-09
Abstract: A process for modifying a polymer by the introduction of peroxide groups comprises subjecting a polymer containing repeating units of the structure -CH2-CXCl-, where X may be chlorine or hydrogen, to a partial dehydrochlorination treatment in order to form unsaturated bonds by removing hydrogen chloride, and subjecting the partially dehydrochlorinated polymer to the action of ozone, an ozone-containing gas or a compound containing a peroxide group, (-0-0-).  Graft polymers may be obtained by polymerizing one or more polymerizable compounds in the presence of the peroxidized polymer so obtained.  Suitable polymerizable compounds are all monomers that polymerize by addition to give generally linear polymers e.g. styrene and its substitution derivatives, acrylic and methacrylic acids, and their esters, acrylonitrile, vinyl esters such as vinyl chloride and acetate, vinylidene chloride, and conjugated dienes such as butadiene-1,3. Dehydrochlorination may be effected by heating the polymers in solution, emulsion or the solid state with organic or inorganic bases in an inert atmosphere, or simply by heating in a vacuum, or by irradiating with ultra-violet radiation.  Peroxidation may be effected with the polymer in solution in an organic solvent, in the dry state or in suspension in finely-divided form in an inert medium.  Temperatures of about 0 DEG  C. are preferred.  In examples polyvinylchloride is dehydrochlorinated with either pyridine or potassium hydroxide, peroxidized with ozone, and used to initiate the polymerization of styrene which grafts on to the peroxidized polymer.
Patent GB-906944-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B19/12
Filed: 1959-09-09
Abstract: 906,944. Photographic cameras. LEITZ G.m.b.H., ERNST. Sept. 9, 1959 [Sept. 15, 1958], No. 30782/59. Class 98 (1). A photographic camera comprises a viewfinder and an objective which has an adjustable element and an indicator whose position is dependent on the said element and an image of which is formed in the viewfinder. In the camera shown a filament 4 is provided near the objective and is linked to the diaphragm setting means and indicates the setting thereof. An image of the filament 4 is formed at 33a by means of a mirror 11, lens 32 and reflectors 30, 31. Images of a reticule 14 and the tip of an exposure meter pointer 15 are formed at 33b by means of reflector 35 a Dove or Abbe prism 36 and a lens 37. Therefore, by means of an annular reflector 38 all three of the above mentioned images are visible in the viewfinder field. An exposure time setting knob 46 rotates through gearing 40-44 the prism 36 (or, not shown, the exposure meter's galvanometer 16) thus changing the position of the images of 14, 15 in the viewfinder field by a corresponding amount. Means are provided whereby the knob 46 may be preset to a position depending on the film speed &c. Rotation of the knob 46 to a particular exposure time causes a cam 52 to move a lever 53 and a slide 54 at the end of which is an exposure time scale 51, visible in the viewfinder field, an index mark for this scale being provided. A mirror 11 acts as a reflex mirror and is rotatable out of the light path by the shutter release knob 47 acting through levers 47a-50, and simultaneously operates means to cut off the viewfinder from the required light-tight part of the camera. The reticule 14 may be designed as shown in Fig. 4. A family of lines is drawn each line of which makes a different angle with the image 4<SP>1</SP> of the diaphragm setting filament 4. The light value setting of the camera is correct when the line A adjacent line image 4<SP>1</SP> is parallel to it. The marking 14a is provided to ensure that the prism 36 is set in the correct position of two possible ones which give the above stated parallelism.
Patent GB-721938-A (GB)
Title: Process for the modification of styrenized fatty acid polyesters
IPC: C08F212/14
Filed: 1952-12-04
Abstract: The film properties of styrenized unsaturated fatty oil acid polyesters are improved by combining them with alcoholates of di- or polyvalent metals.  The styrenized polyesters used are those obtained by the copolymerization of styrene or homologues thereof or similarly reacting unsaturated hydrocarbons, such as alpha-methyl styrene, chlorostyrene, cyclopentadiene, and dicyclopentadiene, with fatty oils, such as lightly oxidized linseed oil, and synthetic resins formed by the condensation of polycarboxylic acids, polyhydric alcohols and fatty oil acids, p  such as a glycerine phthalate resin modified with ricinic acid. Alcoholates specified are those of iron, aluminium, or cobalt, such as aluminium butylate, or their alkoxo salts, such as cobalt aluminium butylate, which may be stabilized with tautomeric substances such as acetoacetic ester, formyl acetophenone, and diethyl malonate.  Alternatively there may be used the synthetic resins obtained by reacting the alcoholates of metals of valency of 3 or more with tautomeric substances such as acetoacetic ester or malonic acid esters.  In a modification of the process an unsaturated fatty oil acid modified alkyd resin is treated with a metal alcoholate or derivative thereof prior to styrenization. The process results in an improvement in the resistance of films made from the styrenized polyesters to heat, water, solvents and alkalies.
Patent GB-871520-A (GB)
Title: Improvements in and relating to gear checking instruments
Filed: 1959-09-09
Abstract: 871,520. Gauging toothed gears. MAAG GEAR WHEEL & MACHINE CO. Ltd. Sept. 9, 1959 [Sept. 11, 1958], No. 30822/59. Class 106 (2). A gear checking instrument has two measuring jaws 14, 22 for measuring the distance of two tooth flanks in a direction substantially parallel to the line of action of the gear 2 being tested the jaws 14, 22 being of annular shape and mounted on a rotatable shaft 5, one jaw 14 being axially fixed to the shaft 5, and the other, 22, axially slidable along the shaft, at least one of the jaws having a helical portion 38, so that the gear 2 may be turned one pitch between measurements. The jaw 14 is mounted on a ring 13 fixed to the shaft 5 and is formed from a helical sheet metal piece 38 for a large portion of its circumference, a small portion being formed as shown at 14. The helical portion 38 may be adjustable to suit gears of different pitch. The other jaw 22 is mounted on an axially movable carrier 21. This carrier is adjustably attached to a spindle 24, movements of which are transmitted through a feeler 37 to an indicator 53. In operation, a motor 11 drives the shaft 5 through reduction gearing, and a measurement is made when the feelers are in the positions shown. The spindle 24 and with it the-feeler 22 are then held fast axially of the shaft by an electromagneticallyoperated clamp 26. The shaft 5 continues to rotate and the helix 38 operates to advance the gear 2 through one pitch. When the gear-has been advanced, the clamp 26 is released and a further measurement can be taken. The helix 38 can be formed from a number of individual segments or rollers. Various other measurements are also described and the jaws may be reversibly mounted on the shaft 5.
Patent GB-753194-A (GB)
Title: Air conditioning systems, particularly for aircraft
IPC: B64D13/06
Filed: 1954-10-26
Abstract: 753,194. Ventilating aircraft.. GARRETT CORPORATION. Oct. 26, 1954 [Nov. 17, 1.953], No. 30831/54. Class 137. In an air-conditioning system, particularly for aircraft, compressed air flows from a conduit 20 to the space 10 to be ventilated, via a path having an upstream part 25, 26, 29, 30, 38, and a downstream part 22, the two parts being in heat-exchange relationship. The downstream part of the path has a by-pass 50 around the heat exchange means, the by-pass being controlled by a butterfly valve 51, and the conduit 38 includes pressure and temperature sensitive elements 53, 54 which vary the resistances of two arms of a Wheatstone bridge, and, through a relay 58, control a reversible motor 52 which actuates the valve 51. The invention is particularly directed to the prevention of ice formation where the air temperature is reduced by expansion. In the present system, the air expanded in the turbine 24 and further expanded in the flared part 23 of the heat-exchange chamber, is prevented from depositing ice upon the walls of the chamber by the jacket 25 which receives comparatively warm air from the conduit 20. The valve 51, likewise, is warmed by this air, and icing thereof is prevented. The compressed air may be supplied from a jet engine 12, boosted by a compressor 14 driven by the turbine 24, and passed through a heat-exchanger 16 using rammed air 17 as coolant. Baffles 40, 41 in the conduit 38 separate water from the air, a pipe 44, connected to the collecting trough 42, supplying a spray nozzle 45 in the coolant air stream of the heat-exchanger 16, the coolant air being thus reduced in temperature by the evaporation of the spray. The amount of water available for spraying depends upon the original humidity of the air, and the cooling effect of the exchanger is thus greater when the original humidity is higher. The element 53 comprises a bellows connected to the slider of a variable resistance which is one of the arms of the Wheatstone bridge, the second variable arm being the element 54 which may be a resistance the value varies linearly with temperature.
Patent GB-1005637-A (GB)
Title: Vehicle control pedal arrangement
IPC: G05G1/40
Filed: 1964-08-04
Abstract: 1,005,637. Adjusting pedals. GENERAL MOTORS CORPORATION. Aug. 4, 1964 [July 24, 1963], No. 30855/64. Heading B7H. The U-shaped bracket 32 on which the control pedals 42, 44, 46 of a motor vehicle are pivotally mounted on shaft 40 is pivotally mounted on the vehicle body by studs 36. The bracket 32 and pedals are held in position by the end 58 of detent 52 engaging one of a series of teeth 62 of striker 60 secured to the vehicle body. To adjust the pedals handle 68 (Fig. 3) is rotated anticlockwise with arm 72 in bracket 70 against spring 76 rotating detent 52 clockwise (Fig. 2) about pivot 50 and disengaging end 58 from striker 60 and then handle 65 is lifted or lowered adjusting the pedals to the desired position and then released. The control pedals are connected with their associated mechanism adjacent the axis of the studs 36.
Patent GB-310210-A (GB)
Abstract: 310,210. Siddons, Ltd., J. & J., and Hammond, G. A. May 21, 1928. Combined open fireplaces and cooking-stoves; dampers; boilers, arrangement of. - In a combination range, the gases pass through side ports 5 to flues 6 leading to the side flues 7<a> of an oven 7 above the fire, the flues 7a containing baffle plates 10 which cause the gases to take a circuitous path to ports 7<b> formed in the inner walls of the flues below the oven. In the stove shown, the ports 7<b> lead to an oven bottom flue 8 connected to the outlet flue 9, and the baffles 10 are of triangular form. Dampers 11, 15, of the kind described in Specification 266,842 control respectively the ports 7<b> and outlets by which the gases may pass directly from the fire to the flue 8; the dampers 11 may be connected for conjoint operation. The flue 12<a> of a boiler 12 at the rear of the fireplace is connected to the flue 8 by a pipe 13 controlled by a damper 14, the arrangement being substantially that described in Specification 262,940.
Patent GB-1146745-A (GB)
Title: Moulding boxes for sand moulding
IPC: B22C21/02
Filed: 1966-07-11
Abstract: 1,146,745. Mould box. SOC. FONDERIES BOSSIROY S.p.r.L. 11 July, 1966 [12 July, 1965], No. 31055/66. Heading B3F. [Also in Division E2] A mould box for sand moulding is formed in one continuous band 7 without a corner hinge and is sprung open by an opening and closure device. The said device comprises a plate 1 linking two eccentrics 4, 4a, one of them being turned by a handle 6 to pull together lugs 2, 3 fixed to the band 7. Lubricated bearing bushes 12 are secured in lugs 16 on the band 7.
Patent GB-1362382-A (GB)
Title: Hydrocarbon conversion processes and catalysts therefor
IPC: B01J21/12
Filed: 1972-07-03
Abstract: 1362382 Isomerisation catalyst treatment IMPERIAL CHEMICAL INDUSTRIES Ltd 3 July 1972 [2 July 1971] 31122/71 Heading B1E [Also in Division C5] Silica/alumina catalysts are improved by contact with water and a glycol in the liquid phase at an elevated temperature. The catalysts may be regenerated by burning off carbonaceous deposits.
Patent GB-827647-A (GB)
Title: Process for the treatment of native cellulosic texí¡í¡ with a synthetic resin
Inventor: WOOD FREDERICK CHARLES
IPC: D06M15/423
Filed: 1955-11-01
Abstract: Textile fabrics composed of native cellulosic fibres are treated with a textile lubricating agent containing an amide group and with a resin-forming intermediate condensate of urea and formaldehyde wherein the molecular ratio of formaldehyde to urea is at least 1.8 to 1 when there is added as condensing agent, in an amount of 8.8% by weight of urea present, an aqueous ammonia solution of specific gravity 0.88; or at least the equivalent molecular ratio when a larger or smaller quantity of ammonia or no condensing agent at all, or a condensing agent other than ammonia is used, and the fabric is heated to form the resin.  The fabric may be treated previously with a swelling agent according to the methods of Specifications 727,889 and 727,890.  The lubricant may be methylol stearamide, a methylol derivative of a product from a higher fatty acid chloride and a polyethylene polyamine, stearamido methyl pyridinium chloride or dimethylol stearyl melamine, and may be applied with and/or before and/or after the resin treatment.  The resin composition may contain tartaric acid, ammonium dihydrogen phosphate or a mixture of sodium dihydrogen phosphate and magnesium sulphate as a catalyst. The resin-treated fabric may be heated in an atmosphere of superheated steam.  Before or during heating, the fabric may be embossed, calendered or glazed or before heating it may be passed through a controlled compressive shrinkage machine.  The treated fabrics may be steamed in a decatizing machine.  The fabrics treated may be of cotton or of native cellulose mixed with cellulose acetate, nylon or wool.  In Example 1, 2 mols. of formaldehyde are condensed with 1 mol. of urea in the presence of aqueous ammonia.  To the reaction product is added ammonium dihydrogen phosphate, monomethylol stearamide (as an emulsion) and water and the composition is used for treating cotton poplin. After drying and heating, the fabric is scoured, rinsed and dried. In Example 2, after being similarly treated, cotton dress fabric is treated with a mixture of stearic acid and borax and dried.  In the Provisional Specifications, the treatment of fabrics composed of regenerated cellulose or mixtures containing regenerated cellulose is described, and reference is made to lubricants containing paraffin wax and fatty alcoholethylene oxide condensation products.  Specification 827,645 also is referred to.
Patent GB-840614-A (GB)
Title: Gear finishing machine
IPC: B23F19/06
Filed: 1958-09-30
Abstract: 840,614. Gear-finishing. NATIONAL BROACH & MACHINE CO. Sept. 30, 1958 [Nov. 25, 1957], No. 31220/58. Class 83 (3). [Also in Group XXIII] A gear-shaving or honing machine comprises means 52 for relatively urging the tool and gear substantially horizontally into engagement. A tool slide 20 is movable transversely of a slide 18, traversable parallel to the axis of a gear supported between stocks 12, 14. A tool support 48 is pivoted at 46 to a head 22 adjustable angularly, to the appropriate crossedaxes setting, against a scale 42 and a dial gauge 86 on the slide 20. The adjustment is made by worm gearing 34, 35, the head being steadied frictionally by a compression spring 40. To position the support 48 in a centralized position, gauge bars 70 are placed between the head and the support, the axis of the pivot 46 then lying vertically beneath the axis 83 of the tool. The tool is moved into engagement with the gear by a piston 52 operated by air or fluid pressure, and connected to the support by a link 56. The support 48 may be locked in any position of adjustment by operation of a piston 100 which moves independently operating wedges 108 on each side of a pin 92 on the support. In a modification, the piston 52 is replaced by a diaphragm-type piston, and the wedges are replaced by pivoted clamping arms which operate independently on each side of a block attached to the support, and which can slip if undue pressure is exerted on the tool. A dial indicator may be provided to indicate the angular movement of the support 48. To assist in initial meshing of the gear and tool, disengageable gearing is provided to rotate the tool.
Patent GB-1176180-A (GB)
Title: 3-(Cycloalkylmethyl and Cycloalkenylmethyl)-5-Phenyl-tetrahydro-4H-1,3,5-Oxadiazin-4-ones
Inventor: LUCKENBAUGH RAYMOND WILSON
IPC: C07D273/04
Filed: 1967-07-06
Abstract: 1,176,180. Herbicides containing tetrahydro oxadiazinones. E.I. DU PONT DE NEMOURS & CO. 6 July, 1967, No. 31266/67. Heading ASE. [Also in Division C2] Herbicidal compositions comprise tetrahydro oxadiazinones of the formula (I) where R 1  is phenyl, R 2  is C 5-8  cycloalkyl, optionally substituted by methyl or halogen, or C 5-8  cycloalkenyl.