baber/WOPTO huggingface dataset:
Patent GB-791833-A (GB)
Title: Improvements in or relating to the measurement or comparison of gloss of a surface
Inventor: WALKER CYRIL HUBERT
IPC: G01N21/57
Filed: 1954-12-10
Abstract: 791,833. Photo-electric measuring apparatus. ELECTROMECH APPLIANCES, Ltd. Nov. 15, 1955 [Dec. 10, 1954], No. 35744/54. Class 40 (3). In an arrangement for measuring the " gloss " of a surface positioned at 32 and carried by a platform 23 by illuminating it from a light source 41 and receiving the reflected light at a photo-electric-cell 46 the output from which is indicated on a meter 12 the effect of the colour of the surface on the amount of light reflected is reduced by arranging that the angle of incidence of the light, measured with respect to the horizontal, lies between 1 and 20 degrees, a preferred angle being 15 degrees. In the illustrated embodiment this angle is obtained by suitably arranging the inclination of the ends 33, 34 of the top plate member which carries the light source 41 and photo-electric cell 46 and through an aperture in which the sample, the " gloss " of which is to be measured, is exposed to the incident light. The apparatus is contained in a housing 10 through an opening (Fig. 2, not shown) in which the sample is inserted, the platform 23 being lowered by means of a lever 18 (operated from outside the housing) against the action of a spring to receive the sample which is then raised to its exposed position at 32. The apparatus may be modified so as to allow " gloss " readings to be made of surfaces such as walls or ceilings.
Patent GB-1436793-A (GB)
Title: Additive combination for cold flow of distillate fuel oil
IPC: C10L1/236
Filed: 1973-07-27
Abstract: 1436793 Olefin polymer compositions EXXON RESEARCH & ENG CO 27 July 1973 [24 Aug 1972] 35777/73 Heading C3P [Also in Division C5] An additive composition comprises (A) a Friedel Crafts condensation product of paraffin wax having a melting point of 100-200‹ F., chlorinated to 5 to 25 wt. per cent Cl, condensed with an aromatic hydrocarbon (which may contain non-hydrocarbon substituents, e.g. -OH, N-NH 2 ) in the relative wt. ratio 5 to 15 : 1 and (B) a compound having a long chain aliphatic portion, a number average M.W. > 500 and being a branched polyethylene, an ethylene polymer containing 5 to 35 wt. per cent Cl or a copolymer of 3 to 40 molar proportions of ethylene for molar proportion of a mono-ethylenically unsaturated mono- or dialkyl ester having 1 to 16 C atoms in the alkyl groups. The ester has the general formula wherein R=H or CH 3 , R 2 =OOCR 4  or COOR 4  (wherein R 4 =H, or C 1  to C 16  alkyl group), R 3 =H or -COOR 4 , e.g. vinyl acetate, isobutyrate, laurate, myristate, or palmitate, methyl acylate, isobutyl acrylate, methyl methacrylate, lauryl acrylate or C 13  OXO alcohol esters of methacrylic acid, C 13  ono-, diisopropyl dilauryl- or ethyl methyl fumarate, diisopropyl maleate. In an example ethylene is copolymerized with vinyl acetate under 1050 p.s.i.g. at 105‹ C. in the presence of dilauryl peroxide.
Patent GB-360665-A (GB)
Abstract: 360,665. Stove dampers. PARK FOUNDRY (BELPER), Ltd., 10, Mortimer Street, Cavendish Square, London, and CORBY, S. F., River View, Derby Road, Belper, Derbyshire.' Nov. 5, 1930, No. 33218. [Class 126.] Dampers for combination ranges and other stoves are carried by pivots j of angular or knife-edge form. In the construction shown the pivots are carried in recesses k having sloping floors, thus causing the damper a to slide until its back edge maintains contact with the side of the flue, which edge may be rounded so as always to maintain a tight joint. As shown in Fig. 1, which is a plan view of an oven damper, the damper is operated by a lever h pivoted at i and adapted to reciprocate a plate d having an upstanding rib e with an inclined nose engaging under an upwardly-curved tongue b<1> on the damper. The plate d slides between guides g and is supported on projections on its lower side in order that it may slide freely. The lever h may carry an arcuate cross-piece m fitting against a correspondingly curved portion of the inner face of the range front plate. Alternatively, the damper may be operated by a rotatable rod carrying a cam which engages the tongue b<1> or other part of the damper.
Patent GB-1188578-A (GB)
Title: Mountings for Heavy Instruments
Inventor: PETERSON WINFIELD HAROLD
IPC: F16C32/00
Filed: 1967-08-07
Abstract: 1,188,578. Aerials. W. H. PETERSON. 7 Aug., 1967 [9 Aug., 1966], No. 36107/67. Heading H4A. [Also in Divisions F2 and G2] A pivotal mounting for heavy instruments such as reflecting telescopes or radio telescopes comprises a spherical instrument carrying member 1 freely rotatable about two mutually perpendicular axes 6 and 7 in a load-bearing, partspherical support socket 4, the axes 6 and 7 lying in a predetermined plane and being defined by non-load bearing adjustment means engaging member 1. The adjustment means consists of an orientation ring 2 which is slidable through an arcuate socket 5 in support 4 to give rotation about axis 7, and which has pivots 3 engaging the member 1 to define axis 6. Worm-gears drive teeth formed in ring 2 and in the sphere 1 to give controlled rotation about axes 6 and 7. An alternative pulley and cable drive is suggested. Sphere 1 rests on a fluid support of liquid or gas or on mechanical castor bearings, within socket 4. In one liquid flotation form of mounting giving universal pivoting about three mutually perpendicular axes, the socket 5 is movable to vary the elevation of ring 2 by means of a further worm and gear mechanism which itself rotates about a vertical axis on a turntable.
Patent GB-802400-A (GB)
Title: Improvements in or relating to flexible couplings, dampers, gearwheels, and like devices
IPC: F16D3/68
Filed: 1955-12-16
Abstract: 802,400. Resilient drives. CROSET, L. P. Nov. 19, 1956 [Dec. 16, 1955], No. 36137/55. Class 80 (2). A flexible coupling, damper, gear-wheel, &c., comprises coaxial driving and driven members 44, 12, a drum 15 fast with the driving member having radially inwardly directed blades 30 interdigitated between outwardly projecting blades 11 on the driven member, the spaces between the blades containing rubber &c. rollers 10 having radii approximately equal to the radii of arcs of curvature 17, 18 and 20, 21 formed at the roots of the blades. The arc of curvature 17, 18 extends over more than 90 degrees, and the arc of curvature 20, 21 over less than 90 degrees. The diameters of the rollers 10 may be the same as or slightly greater than the distance separating opposite sides 17; 21 of the roller containing spaces.
Patent GB-962246-A (GB)
Title: A process for the extraction of atactic fractions from polypropylene
Filed: 1961-10-09
Abstract: Atactic fractions are removed from polypropylene by extraction with propane and/or propene, at a temperature in the range of +10 DEG C. to -25 DEG C.  The propane and/or propene may be mixed with 5 to 40% of a higher boiling hydrocarbon.
Patent GB-830787-A (GB)
Title: Flexible plastic container and method of making same
IPC: B65D39/00
Filed: 1956-11-26
Abstract: 830,787. Moulding bottles. BORELLO, C. Nov. 26, 1956 [Dec. 2, 1955 ; June 22, 1956 (2)], No. 36165/56. Class 87(2). [Also in Group XVII] In the moulding of a bottle 20 from polythene or polyvinyl and similar thermoplastic resins and having a cylindrical tubular neck 21 re-entering to a frusto-conical shape a softened tubular blank 26 is blown into a sectional mould to have a neck wall 21 and a truncated cone part 22a, the remaining part 26 being then severed from the part 22a by a smooth cut along a transverse plane and the wall 22a is then pressed inward to invert the truncated cone. U.S.A. Specifications 2,099,056 and 2,099,057 are referred to.
Patent GB-1496163-A (GB)
Title: Burner quarls
IPC: F23M20/00
Filed: 1974-08-16
Abstract: 1496163 Burners FOSECO INTERNATIONAL Ltd 25 July 1975 [16 Aug 1974] 36234/74 Heading F4T A burner quarl comprises a ceramic tube 3 surrounded by a sound-absorbing chamber 5. Vents 4 are provided in tube 3, chamber 5 is filled with fibre, and the latter is surrounded by a stainless steel gauze 7 and a refractory shell 8. In a modification, the core 10 of the quarl Fig. 2, is cast from alumina and calcium aluminate cement, plugs being placed in the mould to provide vents 11, and a sleeve 13 of fibrous insulating refractory material covers a space filled with fibrous reticular ceramic.
Patent GB-156108-A (GB)
Title: Improvements relating to cartridge magazines for machine guns
IPC: F41A33/00
Filed: 1920-12-29
Abstract: 156,108. United States Ordnance Co., (Assignees of Green, S. G.). July 2, 1919, [Convention date]. Cartridge magazines.-Consists in providing a Lewis gun magazine with a cover-plate 20, the feed-way 15 in which is so shaped as to prevent the insertion of ball cartridges when blank ammunition is being loaded into the drum. In the form shown, the plate 20 is furnished with an interior bead 22 to guide the cartridges, and a depending lip 24 to prevent the nose of a bullet being inserted in the entrance to the usual spiral groove on the magazine centre 13. The plate may be removed and replaced by a plate having a larger feedway 15 to permit of loading with ball cartridges when desired.
Patent GB-1070860-A (GB)
Title: Improvements relating to road vehicle chassis
IPC: B62D33/00
Filed: 1965-08-25
Abstract: 1,070,860. Vehicle frames. WHITE MOTOR CORPORATION. Aug. 25, 1965 [Aug. 27, 1964], No. 36540/65. Heading B7D. [Also in Division B3] A motor vehicle chassis frame comprises a pair of longitudinal beams interconnected by tubular members 35 whose ends are swaged into compressive engagement with sleeve portions 28 of brackets 21, slight overlapping portions 40 and 41 being formed, additional securing being obtained by a weld 45. The brackets 21 are bolted to the longitudinal members of the frame.
Patent GB-1417805-A (GB)
Title: Polymeric composition
IPC: C08L67/02
Filed: 1973-08-01
Abstract: 1417805 Polycarbonate compositions TEIJIN Ltd 1 Aug 1973 36620/73 Heading C3R A composition comprises polytetramethylene 2,6-naphthalate, polyhexamethylene 2,6-naphthalate or a mixture thereof, and 5-90% by weight, based on the composition, of an aromatic polycarbonate. The composition may also include glass fibres. The polycarbonate used in the examples is derived from 2,2-bis- (4 - hydroxyphenyl)propane or 1,1 - bis- (4 - hydroxyphenyl)cyclohexane.
Patent GB-424916-A (GB)
Title: Improvements in or relating to the recovery of molybdenum
IPC: C01G39/06
Filed: 1933-12-30
Abstract: Solid substances containing molybdenum, especially metallurgical waste products or residues from destructive hydrogenation processes using molybdenum catalysts, are heated with an excess of sulphuric acid until the molybdenum compounds are decomposed, and molybdenum tri-sulphide then precipitated from the mixture, preferably after dilution and separation of residues, by sulphuretted hydrogen at elevated temperature, say at 80--100 DEG  C., and under increased pressure.  The substance may be roasted if necessary, say at 400--500 DEG  C., before the sulphuric acid treatment, which may take place at 200--250 DEG  C., when concentrated acid is employed or at 80--100 DEG  C., when using dilute acid.  In an example, the acid treatment is effected in stages.  The acid solution remaining after precipitation of the molybdenum may be freed from sulphuretted hydrogen and re-used.  The molybdenum sulphide obtained may be roasted to obtain the trioxide for conversion into alkali molybdate solutions, or be heated with aqueous ammonia and treated with oxidizing agents to obtain a solution of ammonium molybdate.
Patent GB-1402794-A (GB)
Title: Method of stabilizing silver halide photographic material
IPC: G03C5/26
Filed: 1973-08-02
Abstract: 1402794 Stabilizing photographic silver halide materials FUJI PHOTO FILM CO Ltd 2 Aug 1973 [4 Aug 1972] 36789/73 Heading G2C A photographic light-sensitive silver halide material containing in the emulsion layer and/or an adjacent layer iodine or an iodine - containing inorganic compound other than silver iodide is exposed and then stabilized by heating. Compounds specified include the iodides of K, Na, Ca, Mg, NH 4 , Ni, Rb, Cs, Li, Mn, Ba and Cr, HI, iodic acid, periodic acid, iodine chloride, potassium iodate, sodium iodate and sodium periodate. The compound or iodine may be incorporated during manufacture of the material or may be imbibed from solution before exposure takes place. In examples, silver halide print-out emulsion layers are made containing KI, CaI2, NaI, RbI, I 2  or sodium iodate, exposed to give a print-out image and then heat-stabilized.
Patent GB-1271363-A (GB)
Title: Improvements in or relating to rotor blades for fluid flow machines
Inventor: JUBB ALBERT
IPC: F01D5/22
Filed: 1968-08-01
Abstract: 1,271,363. Dampers. ROLLS-ROYCE Ltd. 1 Aug., 1969 [1 Aug., 1968], No. 36873/68. Heading F2S. [Also in Division F1] A turbine or compressor rotor blade 10 is provided with at least one sealed duct which is partially filled with a material such as sodium, potassium or a mixture thereof which is liquid at normal operating temperature of the blade, the duet being arranged so that the flow of liquid assists vibration damping of the blade. In one arrangement the sealed duct is a closed circuit formed by a groove 28 machined in one of the mating surfaces 24, 26 of the two parts 20, 22 of a shroud 18, the plane of the mating surfaces being inclined at a small angle to the plane perpendicular to the axis of the blade. When the latter is subject to its principal mode of vibration, i.e. circumferentially of the rotor, the liquid flows backwards and forwards through a restriction 32, dissipating energy and thus damping vibration. Several grooves 28 may be provided, each arranged to damp a different mode of vibration. In modifications, restriction 32 may be replaced by a sinuous portion, while the sealed duct need not form a closed circuit.
Patent GB-1488968-A (GB)
Title: Ironing ring for can body press
IPC: B21D22/28
Filed: 1975-09-08
Abstract: 1488968 Capping REYNOLDS METALS CO 8 Sept 1975 [30 Sept 1974] 36902/75 Heading B3Q The service life before regrinding of a wallironing die ring is increased by an intermediate conical surface 26 provided between the conical lead-in surface 18<SP>1</SP> and the cylindrical land 20<SP>1</SP>, the semi-cone angle b of surface 26 being 20- 80% of that a of surface 18<SP>1</SP>. Angle a is 6-20 degrees, e.g. 15 degrees, and b may be 2-10 degrees. The exit semi-cone angle of surface 22 may be 6 degrees. The die ring of cobalt and tungsten composition may be mounted in a flexible support. Annular sprays (15, 17), Fig. 1 (not shown), supply cooling and lubricating liquid.
Patent GB-979098-A (GB)
Title: Boring machine for semi-cylindrical bearings
IPC: B23Q3/10
Filed: 1963-09-19
Abstract: 979,098. Boring machines. CLEVITE CORPORATION. Sept. 19, 1963 [Sept. 19, 1962], No. 36907/63. Heading B3C. A boring machine for boring a semi - circular bearing, comprises means for holding the bearing, a rotary boring bar mounted with its axis at a small angle to the bearing axis, two axially spaced cutters mounted in the bar, and means for rotating the bar about its axis, and for moving the bar relative to the bearing. The machine comprises a frame 10, a slide 12 movable in a dovetail groove 11 in the frame, by a fluid pressure piston 14, and an electric motor 18, driving a boring bar 20 mounted on the slide. The boring bar has cutters 23, 24, cutter 23 being set at a larger radius than cutter 24, and the bar is rotatably supported in a structure 25, integral with slide 12, and is disposed at an angle A, with respect to the axis of slide 12. In operation, a half-bearing 30 is placed in a holder under bar 20, cutter 23 rotates about a centre 32, and removes material along dotted line 33, Fig. 6. A slide 12 is fed along frame 10, cutter 24 rotates about centre 34, and removes material along arc E. After the faces have been machined the bearing falls on to a conveyer for removal. Cutters 23, 24 are radially adjusted by a screw 49, and a screw and sleeve 46.
Patent GB-1438544-A (GB)
Title: Insulating plug
IPC: F16L59/16
Filed: 1973-08-03
Abstract: 1438544 Heat insulating plug MUSKATEER CORP 3 Aug 1973 [7 Aug 19721 36994/73 Heading F2P An insulating plug 12, for closing a hole 8 in insulation 4 surrounding a pipe 2 or tank (not shown) includes a member 14 for insertion into the hole 8 having an integral cap 16 with a diameter larger than the hole diameter, and groove means 18 in the cap 16 having a depth beyond the innerside of the cap 16. The groove 18 also includes a semicircular depression 24. The plug 12 is retained in the hole 8 by a spring 28 consisting of a coil 30 and a pair of arms 32. In use the spring 28 is bent to the shape shown in dotted lines, is inserted into the groove 18 and is pushed inwardly so that the ends 38 of the arms 32 penetrate the insulation 4. When in position the arms 32 engage the base 20 of the groove 18 and the coil 30 engages the recess 24. When the insulation 4 is provided with a protective outer layer 6 the arms 32 also engage the inner surface 22 of the layer 6. The cap 16 is also provided with a transverse slot 26 to allow the spring 28 to be removed using a pair of specially designed narrow pliers (not shown). The plug 12 is constructed of granular drypressed fire brick material and the upper surface 42 of the cap 16 may be coated with a water repelling, heat-resistant paint. The plugs 12 are used to fill holes 8 provided in the insulation 4, 6 to allow ultrasonic testing of the pipe 2.
Patent GB-966143-A (GB)
Title: Process for the manufacture of polyolefines of narrow molecular weight distribution
IPC: C08F10/00
Filed: 1960-10-27
Abstract: Olefins containing 2 to 6 carbon atoms are polymerized in an inert suspension medium in the presence of a "Ziegler type" catalyst and a polymerization regulator, by a process in which there is added to a suspension which is kept in a state of turbulent flow in the reaction zone, a suspension medium comprising a hydrocarbon boiling in the range 40 to 250 DEG C., the hydrocarbon being added in a constant quantity of 50 to 250 litres per cubic metre of polymerization space per hour, and there is simultaneously added 1 to 20 millimols per litre of suspension medium of a polymerization catalyst selected from titanium tetrachloride, titanium trichloride and vanadium oxychloride, and 2 to 40 millimols per litre of suspension medium of an activator selected from aluminium diethyl monochloride, aluminium triethyl and aluminium ethyl sequichloride, and the suspension is simultaneously admixed with an olefin containing 2 to 6 carbon atoms in a quantity of 15 to 70 kilograms per cubic metre of polymerization space per hour, and is further mixed with a polymerization regulating gas selected from hydrogen and oxygen in such proportion that a constant pressure of 1 to 10 atmospheres and a partial pressure ratio of regulator gas to monomer gas of 1:100 to 2:1 is maintained in the space above the reaction zone. Specified olefins are ethylene, propylene, butylene and methylpentene-1.  Apparatus suitable for carrying out the process of the invention is described and illustrated, and examples describe the polymerization (1) ethylene and (2) propylene in the presence of hydrogen and catalyst comprising titanium trichloride and aluminium diethyl chloride.
Patent GB-344358-A (GB)
Title: Improvements in and relating to rotary fans for ventilating purposes
IPC: F04D29/54
Filed: 1929-12-03
Abstract: 344,358. Ventilating-fans. FLETCHER; P. PURSER- and FLETCHER, F. PURSER-, 20, Park Crescent, Portland Place, London. Dec. 3, 1929, No. 37018. [Class 110 (i).] A ventilating-fan to give an axial and a diverging flow comprises screw propeller blades provided at the tip with a radial centrifugal blade portion, or independent centrifugal and screw propeller blades may be provided. The compound blades may be formed by a pressing operation from blanks i, Fig. 6, and bending up the portion k to form the radial centrifugally acting blade tip as shown in the plan view, Fig. 3. The blade tips k may be joined by inclined annular rings l which act as air-ejecting louvres, Fig. 8.
Patent GB-876042-A (GB)
Title: Improvements in or relating to transistor circuit arrangements for demodulating and amplifying signals
IPC: H03G3/20
Filed: 1957-11-28
Abstract: 876,042. Transistor demodulator and amplifier circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Nov. 28, 1957 [Dec. 1, 1956], No. 37118/57. Classes 40(5) and 40(6) In a circuit for demodulating an A.M. or F.M. signal and amplifying both the modulation and the D.C. automatic gain control components, the demodulator is connected through a D.C. path to a transistor amplifier, the output of which includes a transformer which supplies an amplified modulation output and which has sufficient resistance in its primary winding to provide thereacross an amplified direct current component representing the carrier amplitude, negative feedback at modulation frequency being provided between the transformer and input of the transistor. The Figure shows an I.F. output circuit coupled to a detector 6 connected through a load resistance 7 to a transistor amplifier 8. The collector of the transistor supplies modulation frequency output by way of a transformer 10, the primary winding of which has sufficient resistance to provide an amplified D.C. voltage at the collector for automatic gain control purposes. Negative feedback at signal frequencies is provided by a circuit 13, 14 or by a tertiary winding 17 connected in series either with the emitter circuit or the base circuit. The feedback prevents distortion due to the variation of the transistor characteristic as the signal amplitude varies and can be arranged to vary the input or output impedance of the amplifier. It is suggested that the amplifier could alternatively be operated in the common base or common collector configuration.