baber/WOPTO huggingface dataset:
Patent GB-829099-A (GB)
Title: Improvements in or relating to photographic equipment
IPC: G03B7/06
Filed: 1955-12-29
Abstract: 829,099. Photographic apparatus. BAUER G.m.b.H., E. Dec. 29, 1955 [Jan. 20, 1955], No. 37201/55. Class 98(1) A camera, which includes a photoelectric meter the position of whose needle is dependant on a variable which affects exposure, includes a device comprising a fixed scale and an adjustable scale having an indicator, such scale relating to a different variable which affects exposure, one of the scales being continuous throughout its range and the other scale comprising groups so arranged that each group co-operates with one of the graduations of the first scale, the said needle and indicator being so arranged that they may be brought into alignment by adjusting the variable which affects the meter needle. Fig. 1 shows a cine-camera having a photoelectric meter the needle 4 of which is affected directly by adjusting the lens aperture. The adjustable scale 8, which carries an indicator 5, is graduated continuously in frames/sec., and each graduation cooperates with a group of graduations 10 on a fixed scale, each group being calibrated for film emulsion speed expressed in DIN. Before exposure, the indicator 5 is set for the correct film speed and the shutter speed in frames/se,c., and the correct exposure is obtained by adjusting the lens aperture so that the meter needle 4. is always aligned with the indicator 5, both needle 4 and indicator 5 being visible in the view-finder 3. Fig. 2 shows a set of scales to be used on a still camera (not shown). The fixed scale 15 is arranged. in groups, each group being calibrated in film emulsion speed in DIN. The adjustable scale 12 with pointer 13 is calibrated continuously in f numbers. The photoelectric meter will be affected by adjusting the shutter speed of the camera, and having set the pointer 15, the meter needle (not. shown) must be kept in alignment with. the pointer by adjusting the shutter speed ring of the camera. U.S.A. Specification. 2,250,898 is referred to.
Patent GB-921048-A (GB)
Title: Condensation polymers containing the ªÐ-xylylene group, and lubricating oil compositions containing them
IPC: C08G61/00
Filed: 1959-11-03
Abstract: A lubricating oil composition comprises a major proportion of an oil of lubricating viscosity and, as viscosity index improving agent, 1-20% of a condensation polymer of a ,a 1-p-xylylene dichloride with a diphenyl ether, an a ,o -diphenylalkane or an alkylbenzene; the condensation polymers prepared from a diphenyl ether or an a ,o -diphenylalkane may have alkyl substituents in any of the aromatic nuclei.  Specified oils include mineral oils such as naphthenic base, paraffin base and mixed base oils derived from petroleum; synthetic oils such as polymers of alkylene oxides; and aromatic-type oils such as alkyl-phenyl diethers, alkyl biphenyls, alkylbiphenyl ethers, polyalkyl terphenyls, polyphenyls, polyarylalkanes, dialkyl benzenes and aryl esters.ALSO:Resinous products, suitable as viscosity index improving agents for lubricating oil compositions, comprise condensation polymers of a ,a 1-p-xylylene dichloride with a diphenyl ether, an a ,o -diphenylalkane or an alkyl benzene; those prepared from a diphenyl ether or an a ,o -diphenylalkane may also have alkyl substituents in any of the aromatic nuclei.  The polymers are prepared by reacting a diphenyl ether, an a ,o -diphenylalkane or an alkyl benzene with a ,a 1-dichloro-p-xylene in the presence of a Friedel-Crafts catalyst, e.g. ferric chloride, aluminium chloride, aluminium bromide or, as used in the examples, a mixture of ferric chloride and ferric oxide.  In the examples polymers are prepared from a ,a 1-p-dichloroxylene and (1) n-nonyl benzene (2) n-butyl benzene (3) and (4) diphenyl ether (5) diphenylmethane and (6) 1,9-diphenylnonane, the products of Examples (3), (4) and (5) being alkylated with propylene tetramer in the presence of a hydrofluoric acid catalyst.  Other polymers mentioned are poly(n-nonyl, sec-dodecyldiphenylether-p-xylylene), poly(di(C16-C18) secalkyl) diphenylether-p-xylylene), poly(di(n-nonyl) diphenylether-p-xylylene) and poly(dodecyldiphenylether-p-xylylene).
Patent GB-1317766-A (GB)
Title: Air-cooled condenser for vapour from the head of a distilling or rectifying column
IPC: B01D5/00
Filed: 1970-08-04
Abstract: 1317766 Air-cooled condensers for distillation columns GEA LUFTKUHLERGESELLSCHAFT HAPPEL GMBH & CO KG 4 Aug 1970 [17 Sept 1969] 37612/70 Heading B1B The overhead vapours from a distillation column 2 pass through riser pipe 4 and tubes 5 into outwardly-finned tubes assembled in vertical planes around a chamber 8 above the column, the finned tubes being disposed symmetrically in respect of the vertical axis of the column and being surrounded by a sheathing 17a which is closed at the top but open to the atmosphere at the base so that air is drawn in by fan 15 and flows between the finned tubes thereby causing condensation of the vapours therein. The sheathing 17a, which may be made of metal, plastics or asbestos, protects the finned tubes from wind, sun and rain. The condensate collects in chambers 11 and pipe 20 from which some of the condensate is refluxed to the column and the remainder is withdrawn as product. The tubes may be assembled in inclined planes; and each assembly may have an individual weather sheathing (Figs. 3 and 4, not shown). Embodiments are also described wherein the vapours enter the lower ends of the tubes, and the upper ends may be connected to a vacuum pump.
Patent GB-972639-A (GB)
Title: Isomerization of olefins
IPC: C07C5/25
Filed: 1960-11-02
Abstract: The double bond isomerization of C4-C8 mono-olefins is effected at elevated temperature over an anionic catalyst obtained by calcining a composition of alumina and 0.4-8 milli-equivalents per gram of alumina of an oxide or compound which decomposes on calcination of an alkali or alkaline earth metal.  The isomerizations of 2-methylbutene-1 or 2-methylbutene-2 to 3-methylbutene-1, of butene-1 to cis- and trans-butene-2 and of 2-methylpentene-1 principally to 2-methylpentene-2 are specified.  Suitable conditions are 200-1100 DEG  F. with an olefin partial pressure of 12-300 p.s.i.a. and a WHSV of up to 200 may be used; hydrogen up to a partial pressure of 500 p.s.i.a. may be added, and an inert diluent may be used if desired.
Patent GB-1199252-A (GB)
Title: Method and Apparatus for Crystallization
Inventor: HEDRICK ROBERT HOWARD
IPC: B01D9/00
Filed: 1966-08-23
Abstract: 1,199,252. Crystallizing. STRUTHERS SCIENTIFIC & INTERNATIONAL CORP. 11 Aug., 1967 [23 Aug., 1966 (2)], Nos. 27650/66 and 37702/66. Heading B1G. In a method of crystallizing from a liquid, the liquid is drawn down through a tube by means of a propeller, is ejected tangentially from the lower end of the tube by means of a snail duct, is passed up around the tube in spiral flow, and is recycled to the upper end of the tube. In Fig. 1, already formed supersaturated solution fed into a vessel 10 via an inlet 11 is drawn down through an inner tube 12 having a propeller 13 and a snail duct 16, crystals being withdrawn from an outlet 20 and mother liquor being withdrawn from an outlet 17 having a barrier 18. In Fig. 4, supersaturated solution formed in the upper evaporation chamber 111 of a vessel 110 is drawn down through an inner tube 116 having a propeller 118 and a snail duct 121, crystals being withdrawn from an outlet 122 and mother liquor being withdrawn from an outlet 121. Liquid is recycled to the upper end of tulbe 121, which has an enlarged opening 113, through the annular gap between enlarged opening 113 and a baffle attached to the side wall of vessel 110.
Patent GB-1042087-A (GB)
Title: Ceiling for prefabricated buildings
IPC: E04B7/00
Filed: 1964-09-15
Abstract: 1,042,087. Roof construction; building panels. G. LUTZE. Sept. 15, 1964 [Sept. 17, 1963], No. 37706/64. Headings E1B and E1V. A roof construction is formed using a prefabricated aluminium section framework, 11, 12, 15 (Figs. 2), by attaching to it a plaster, sheet aluminium or plywood panel or panels 30, with interposed slidable plastics spacing brackets 17, covering the panel or panels with a moulded in situ layer of foamed plastics material 33 (Fig. 6), and covering the framework with a roof skin 20. The roof skin is attached to the framework via connectors 19 which slide in upper grooves in the framework members, and have arms 19c which engage side walls of a trough 20a formed in the roof skin. A bracket 21, which also serves as a gutter, supports a fascia board 22. Depending flanges, e.g. 14c (Fig. 6), on the external framework members sit in recesses 25a in box-shaped members 25 forming parts of side walls 24 of the building, each of which has a foamed plastics insulating layer 26 and a plaster facing 27. The brackets 17 may be fixed to the panels 30, and may be apertured (as at 17c) to allow the passage of, e.g., electric cables 18. They can be removed from the framework members through wider slots 16b therein. To mould the plastics filling 33, the framework is laid on a table, with timber beams, e.g. 31 locating the outside members, e.g. 14, and the space is filled with the liquid plastics material.
Patent GB-1123878-A (GB)
Title: Synthesis of norbornene derivatives
Inventor: MOODY ANTHONY GIFFORD
IPC: C07C17/30
Filed: 1966-08-23
Abstract: Cyclopentadiene present in a mixture with isoprene and/or piperylene is removed by selective reaction with an allyl compound (see Division C2).ALSO:The title compounds are prepared by reacting allyl compounds with cyclopentadiene which is in admixture with isoprene and/or piperylene.
Patent GB-625153-A (GB)
Title: A new or improved toy
IPC: A63H13/20
Filed: 1946-12-24
Abstract: 625,153. Toys. FRYER & CO. (NELSON), Ltd., and HAYTHORNTHWAITE, J. Dec. 24, 1946, No. 37926. [Class 132 (iii)] A toy comprises a turntable 7 and a screen or the like 18 extending across said turntable and provided with openings 19, 20 so that when the turntable is rotated objects placed thereon emerge from behind the screen and are carried round to another opening through which they re-enter. As shown, the screen is in the form of the front wall of a fort built upon a raised base 8, the turntable being mounted on a pivot 9 fixed in a cross-bar 10. Spring clips 11 are provided on the turntable for removably securing model soldiers or other objects thereon. The periphery of the turntable engages a grooved friction wheel 12 housed in a recess 13 in the floor 8. The wheel is secured to the upper end of a vertical flexible shaft 14 forming an extension of a cranked operating handle 15 mounted in the side wall of the base 5. The shaft and handle may be made of a length of closely coiled wire tube. The screen is more or less diametrically situated on the turntable. If desired, the toy may be in the form of a Noah's ark, from which animals emerge and into which they enter as the turntable revolves.
Patent GB-1514386-A (GB)
Title: Ground covering material for mulching
IPC: A01G13/02
Filed: 1976-09-14
Abstract: 1514386 Devices for mulching BREVETEAM SA 14 Sept 1976 [26 Sept 1975] 37946/76 Heading A1E A weed suppressing mulch is provided by a sheet of material having a highest degree of light permeability of 60% and an air permeability of at least 200 litres per sq. metre per second at a pressure of 10mm water column. In one embodiment a plastics film, coloured by the addition of 2% of soot, has a dense arrangement of short straight slits which are arranged in alignment in parallel rows, the slits of adjacent rows being in register so that the bridging pieces between slits form strips running right across the film. This prevents the slits from opening when the film is pulled. In another embodiment a fibrous material, such as a fleece, is employed, the light absorption being modified by admixing black fibres with the others, and air permeability being modified by appropriate bonding of the fibres and the formation of slits if necessary.
Patent GB-1482353-A (GB)
Title: Circuit arrangement including a transducer element
IPC: G01K7/02
Filed: 1974-08-30
Abstract: 1482353 Temperature compensated transducers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 30 Aug 1974 [4 Sept 1973] 38030/74 Heading G1N A transducer element C, e.g. a zirconium oxide partition measuring the ratio of partial oxygen pressures on respective sides of the partition in the temperature range 450-850 degrees centigrade, producing a D.C. output voltage dependent on a quantity to be measured and also on temperature and having a temperature-dependent internal resistance is connected in a circuit which utilizes this resistance to effect compensation of the output e.m.f. for temperature variations. In one embodiment, Fig. 2, the element is connected in a voltage-divider with a resistance 3 and the divider is supplied by a constant amplitude square-wave source 4 to provide a temperature-dependent A.C. signal at terminal 8. This A.C. signal is removed in a low pass filter 10 and the D.C. signal fed to one input 29 of a divider or multiplier 28. An A.C. amplitude detector 11 is also connected to terminal 8 and which includes a D.C. blocking capacitor 16, and peak rectifying diode 17. The resulting D.C. voltage V 1  3  on line 13 varies as a function of temperature as the line (L 1 ) in Fig. 5 (not shown). Inverting amplifier 20 produces a voltage which is directly proportional to temperature which is fed to the other input 30 of the divider which produces at terminal 15 a D.C. output depending only upon the quantity to be measured. Alternatively, Fig. 3, the low pass filter 10 connected across the element to supply only the D.C. signal from the element to a chopper circuit 33, 34. The resulting A.C. signal is amplified 37 and supplied across a voltage-divider consisting of resistances 42, 43, blocking capacitor 44 and the element C. The resistances 42,43 are chosen with respect to the internal resistance of the element so that the voltage-division is inversely dependent on absolute temperature. As a result the alternating voltage output from the divider at terminal 9 represents the quantity to be measured only, that is, the temperature-dependance is compensated for, at least, within the range 450-850 degrees. The resistor R42 is from 0À3 to 0À6 times Ri at the centre of the range where Ri is the internal resistance of the element and R43 is from 0À6 to 0À8 Ri. Reference is made to measuring temperature per se and to measuring mechanical stress using a Piezo-electric element.
Patent GB-1526050-A (GB)
Title: Method of and apparatus for sifting particulate material in a cross-current
IPC: B07B7/02
Filed: 1975-09-16
Abstract: 1526050 Pneumatic separation H RUMPF 16 Sept 1975 [17 Sept 1974] 38078/75 Heading B2H A method of classifying particulate material below 1mm in size comprises projecting the material in a thin layer and at a velocity greater than 5m/sec into a sifting gas current E directed transversely to the initial direction of proiection of the material so that the material is spread out by the current and is separated into two or more fractions by one or more blades 11, 15, 26, 48, 49 without previously rebounding from any wall, and withdrawing a portion T of the sifting gas immediately after the material charging point and in a direction having a component directed opposite to the material input direction. In the embodiment shown in Fig. 2, the particulate material is projected into the sifting zone 2 by means of two conveyor belts 6 and 7. The sifting gas enters the zone 2 via a flow straightener 5 and nozzle 4 and leaves via ducts 1 and 14. The fine material passes into the duct 14, the middle material into the duct 1, and the coarse material is collected in a receptacle 10 which in a modification, is provided with an air outlet (33) Fig. 4 (not shown). The positions of the blades 11 and 15 are adjustable. In the embodiment shown in Fig. 3, the material is fed to the sifting zone 2 by a pneumatic device 20 comprising a hopper 22 and an injector nozzle 23. One or other of the middle fractions may be returned to the sifting zone to improve the separation. In the embodiment shown in Fig. 5, the material is fed to an annular sifting zone by a centrifugal plate 42 and the sifting gas is fed to the said zone through two coaxial annular nozzles 43 and 44. In another embodiment, Fig. 6 (not shown), the sifting gas flows upwardly to and from an annular sifting zone. Some of the sifting gas e.g. that carrying away the middle fraction, may be recirculated to the sifting zone after removal of the particulate material therefrom Fig. 7 (not shown).
Patent GB-1183780-A (GB)
Title: A Uranium Alloy.
Inventor: LEROUGE GEORGES
IPC: C22C43/00
Filed: 1968-08-09
Abstract: 1,183,780. Uranium alloys. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 9, 1968 [Aug. 11, 1967], No.38268/68. Heading C7A. [Also in Division G6] A uranium base alloy, for use in a fuel element of a nuclear reactor, comprises:- Sn 0À02-0À15% one Cr 0À02-0À08% Fe 0À02-0À08% and optionally Al 0À02-02% and/or Si 0À02-0À15% the balance, apart from impurities, being uranium. The alloy may be heated in the beta phase region below 750‹ C., quenched (e. g. in oil or water) or subjected to interrupted quenching at 500 and 600‹ C. (e.g. in a salt bath or by induction heating) and then advantageously aged at 450-600‹ C.
Patent GB-921296-A (GB)
Title: Improvements in or relating to calenders for paper and like sheet material
Inventor: HEYES RALPH CHALINOR
IPC: D21G1/00
Filed: 1960-12-09
Abstract: 921,296. Calenders for paper &c. MILLSPAUGH Ltd. Nov. 21, 1961 [Dec. 9, 1960], No. 38421/60. Class 96. A calender for paper and like sheet material has two oppositely inclined series of rolls with a common power driven roll at the intersection of one series with the other series. All the rolls are supported on a common frame. The common or " king " roll 9 may be driven by epicyclic reduction gearing within a conical pulley from which is driven the uppermost roll 8, again by epicyclic gearing within a conical pulley. Slidable mountings 5 are provided for the rolls 7, 8 and a pair of motor-driven screws 11 are arranged to move the mountings when it is desired to separate the rolls. Drying cylinders 32 may be mounted on the same frame as the calender rolls and an additional roll carried on pivoted arms may be located between the fixed drying roll and the first roll 7 to reduce the tendency of the web to stretch between rolls. Instead of the king roll 9 being at the bottom it may be the highest roll. In another arrangement, Fig. 7, the highest roll 8 may be common to a third series of rolls that includes a positively driven roll 43. Individual electric motors may be employed with the power driven rolls.
Patent GB-1469894-A (GB)
Title: 1-hydroxyalkylidene-diphosphonic acid derivatives and their use  as collectors in flotation concentration of tin ores
IPC: C07F9/38
Filed: 1975-09-18
Abstract: 1469894 Flotation collectors TSENTRAL NI INST OLOVYANNOI PROMYSHLENNOSTI INST KHIMICHE KINETIKI I GORENIA SIBIR OTDELENIA AKAD NAUK SSSR and GOSUDARST NI I PROEKTNO - KONSTRUKT INST GIDROMETALL TSVETNYKH METALLOV 18 Sept 1975 [18 Sept 1974 19 Nov 1974] 38422/ 75 Heading B2H [Also in Division C2] As collectors in the flotation concentration of tin ores (e.g. cassiterite) there are used mixtures of disodium 1-hydroxyalkylidenediphosphonates having 6-10 carbon atoms.
Patent GB-846162-A (GB)
Title: Improvements in chain or belt tensioning devices
Inventor: RANDELLS FRANK
IPC: F16H7/08
Filed: 1957-12-12
Abstract: 846,162. Belt and chain tensioning. PERRY CHAIN CO. Ltd. Oct. 31, 1958 [Dec. 12, 1957], No. 38599/57. Addition to 810,274. Class 80(1). In a tensioning-device wherein a piston 5 and cylinder 3 are movable relatively to each other by a spring 7 to press a slipper 6 or other part against a chain or belt, return movement being prevented (except, if desired, for a limited amount) by oil or other liquid which enters the cylinder 3 from a reservoir 2 through a non- return valve comprising a resilient blade 10 located in the hollow piston 5, as in the parent Specification, the blade 10, Figs. 4, 5, is carried by a sleeve 11, or a transversely-curved part, which is fitted into the hollow piston and serves to retain the blade 10 in position. The necessity for riveting the blade 10 to the piston wall, as in the parent Specification, is thus avoided. As shown, the blade 10 is integral with a resilient sleeve 11 which is longitudinally split at 12 to grip the piston frictionally and has a small bent-out ear 14 which springs into a hole in the wall of the piston. If the sleeve is a tight fit in the piston, the ear 14 may be dispensed with. Alternatively other co-operating projections and holes may be provided between the sleeve and piston. The head 13 of the blade 10 is curved to fit over an oil inlet hole 8 in the piston wall, the hole 8 communicating with a hole in the bottom of the reservoir 2 by a passage which may be formed by a flat on the piston or by a groove in the underside of the reservoir. A small hole may be provided in the head 13 to allow slight return movement of the slipper 6. The arrangement shown, wherein the cylinder 3 is fixed and the slipper 6 is carried by the piston 5, may be modified as in the parent Specification so that the cylinder is movable and carries the slipper.
Patent GB-959092-A (GB)
Title: Improvements in or relating to magnetohydrodynamic electrical generators
IPC: H02K44/26
Filed: 1960-11-10
Abstract: 959,092. Generators operating by electromagnetic interaction with fluids. BROWN BOVERIE & CIE A. G. Nov. 10, 1960 [Nov. 14, 1959 ; June 30, 1960], No. 38624/60. Heading H2A. In a magnetohydrodynamic electric generator gas flows in direction V through an annular due between a laminated magnetic core 2 and easing 4, and an alternating exciting current flows in opposite directions through windings 5<SP>1</SP>, 5<SP>11</SP> and produces a radial magnetic field H which, in turn, generates circumferential current j in the annular gas space which induces an alternating current in the secondary output winding 6. Leakage currents formed in the vicinity of supporting spokes 3 due to their magnetic shielding effect are reduced by the use of radial insulating plates 7 also the opposing magnetic fields produced by windings 5<SP>1</SP>, 511 eliminate the resultant exciting flux in core 2. The generator is modified to produce a polyphase alternating current output by using the above single phase elements distributed in the direction of gas flow, Fig. 4 (not shown). For a sixphase output six units are used, each exciting winding tapped to give full excitation from the main phase and half excitation from the two adjacent phases. An alternating current produced by periodic variation of either the electrical conductivity or velocity of the gas, when the exciting windings are supplied with D.C., is also described.