baber/WOPTO huggingface dataset:
Patent GB-1252473-A (GB)
IPC: E04D3/06
Filed: 1969-08-28
Abstract: 1,252,473. Fire-resistant acrylic resins by stretching. ROHM G.m.b.H. 28 Aug., 1969 [31 Aug., 1968], No. 42945/69. Heading C3P. A fire-resistant acrylic resin such as polymethyl methacrylate is rendered fire-resistant by being permanently stretched by 30 to 80% and by containing at least one fire-retarding agent. The resin is preferably biaxially stretched by 30 to 80% along each of the axes of stretching and contains a phosphorus compound, preferably a halogen-containing phosphorus compound as the fire-retardant. Such a fireretardant is used in such an amount that the phosphorus content of the resin is at least 0-8% by wt, and the halogen, i.e. chlorine or bromine, content is at least 1-2 wt. per cent or at least 2-7 wt. per cent respectively. The stretching may be carried out prior to, or simultaneously with making an article from the resin. Specifically disclosed are domes made from polymethyl methacrylate containing trichloroethyl phosphate and phosphoric acid in admixture, and a phosphoric acid polyester of the formula C 14 H 28 O 9 P 3 Cl 5 . Six domes are disclosed, three being unstretched, and the other three being biaxially stretched by 50%.
Patent GB-1252996-A (GB)
IPC: F28D7/08
Filed: 1969-12-04
Abstract: 1,252,996. Ozonizer. IIT RESEARCH INSTITUTE. 4 Dec., 1969 [18 Dec., 1968], No. 59221/69. Heading H5H. An ozone producing apparatus comprises an ozone generator 12 supplied with an oxygen containing gas and connected to a heat exchanger 20 for cooling the gas as it flows therethrough and means for recirculating gas through said generator 12 and heat exchanger 20, the ozone generator 12 comprising a plurality of parallel plate electrodes 17 and intervening parallel films 15 of polymeric material, e.g. polyester, polyimide, P.T.F.E., biaxially oriented polypropylene, or polycarbonate. The films 15 are not self-supporting and are therefore held under tension between upper and lower insulating spacers 29, 31 which are secured by adhesive to the electrodes 17. The insulating spacers 29, 31 are secured together by compression screws 35 threaded through bars 37 extending across side walls 21 of the generator housing 22. The electrodes 17 are stainless steel or aluminium and are thinner than conventional electrodes as they do not have to withstand the pressure of cooling water. Oxygen containing gas is introduced at inlet 55 and ozone containing gas is exhausted at the same flow rate from outlet 57. The inlet gas is conveyed through heat exchanger 20, ozone generator 12, blower 19 and back to the heat exchanger. The flow rate through the generator 12 is about fifty times that through outlet 69 so that the gas is constantly being recirculated. In an alternative arrangement the ozone generator comprises a number of units consisting of an electrode plate having upper and lower insulating spacers to which are secured tensioned polymeric films interposed with electrodes to which upper and lower insulating spacers are secured. In Figs. 5 and 6 (not shown) the ozone generator is formed from a ribbon of polymeric film which carries spaced electrodes formed alternately on opposite sides thereof by evaporating or electroplating. The ribbon is folded zig-zag fashion and insulating spacers are placed in the upper and lower loops so formed and moved apart to tension the films so that the electrodes are parallel. Thereafter the opposite ends may be potted with thermosetting or thermoplastic resin.
Patent GB-1258221-A (GB)
IPC: H01B11/18
Filed: 1970-02-16
Abstract: 1,258,221. Waterproof electric cable. DOW CHEMICAL CO. 16 Feb., 1970 [17 Feb., 1969], No. 7344/70. Heading H1A. An electric cable comprises at least one conductor 2 surrounded by insulation means 3, a protective metal shield 8 surrounds said insulation means and has a longitudinal seam formed by overlapping the edges 5 of the metal strip used to form said metal shield, a layer of hygroscopic material 9 disposed around the protective metal shield to serve as a sink for absorbing moisture, a metal shield 12 surrounding the layer of hygroscopic material and disposed between the layer of hygroscopic material and an outer jacket of plastics material. The metal shield has the edges thereof in overlapping relationship to form a longitudinal seam bonded together by means of an adhesive polymer. The hygroscopic material comprises paper, cloth, a blend of polymer material and calcium chloride, a blend of polymer material and sodium sulphate, or a blend of polymer material and sodium chloride. The metal shield surrounding the layer of hygroscopic material may consist of aluminium, copper, bronze, steel, tin plated steel or a composite thereof. The metal shield 12 is bonded to the outer jacket of plastics material and the hygroscopic layer 9 by means of an adhesive comprising a polymer or copolymer of an olefin and an ethylenically unsaturated carboxylio acid. A layer of plastics material 7 may be disposed between the protective metal .shield and the layer of hygroscopic material, the protective metal shield and layer of plastics material are bonded together by an adhesive comprising a copolymer of an olefin and an ethylenically unsaturated carboxylic acid. An adhesive of this type may be used to bond edges of the longitudinal seam 13 together. Electric cables containing more than one conductor are illustrated in figures 2 and 3 (not shown).
Patent GB-1264193-A (GB)
IPC: G03C1/675
Filed: 1969-04-15
Abstract: 1,264,193. Photographic non-silver photodevelopable compositions. HORIZONS RESEARCH Inc. April 15, 1969 [July 19, 1968], No.19301/69. Heading G2C. A light-sensitive non-silver photo-developable composition contains (a) at least one colour-forming compound which is a di- or triphenylmethane or a 9:10-dihydroanthracene of the formula:- in which each R<SP>11</SP> is H, alkyl or haloalkyl of up to 4C and each R<SP>111</SP> is H or alkyl of up to 4C; (b) at least one activator for accelerating a colour change in the colour-forming compound, e.g. CBr 4 ; (c) at least one organic N#O compound; and (d) one or more compounds selected from merocyanine dyes, rhodamine B base, di- or tri-phenylmethane carbinols and N-methyl diphenylamine. N-vinyl carbazole may also be present.
Patent GB-1264306-A (GB)
IPC: D01H5/14
Filed: 1968-05-28
Abstract: 1,264,306. Faller bars, combs. WALKER, MITCHELL & CO. Ltd. 22 May, 1969 [28 May, 1968], No. 25407/68. Heading D1N. A faller bar or comb comprises a metal body part 12 and a pin strip member 18 held in the body part by means of adhesive. The pin strip member is made of an aluminium alloy and constituted by an elongated root portion with integral teeth projecting therefrom.
Patent GB-1264715-A (GB)
IPC: F04D9/04
Filed: 1969-09-11
Abstract: 1,264,715. Priming centrifugal pumps. ECODYNE CORP. Sept.11, 1969 [Sept.20, 1968], No.44928/69. Heading F1C. A centrifugal pump is primed by a vacuum pump 66 which draws air from an annular recess 55 in the top wall of the volute 35 into a priming chamber 62. After all the air has been withdrawn, liquid rises within the priming chamber 62 until it contacts an electrode 75 to complete a circuit which switches off the vacuum pump 66. Since the port 63 connecting the priming chamber 62 to the volute 35 is located in a low-pressure area remote from the discharge branch 12, it is not necessary to provide a valve in the port to prevent liquid being forced into the priming chamber 62 during normal running of the centrifugal pump. A restricted clearance between the impeller 45 and an-annular ridge 80 prevents solids in the pumped liquid from clogging the port 63 and fouling the priming system.
Patent GB-1267011-A (GB)
IPC: C08G18/00
Filed: 1970-06-02
Abstract: 1,267,011. Polyurethane foams. FARBENFABRIKEN BAYER A.G. 2 June, 1970 [7 June, 1969], No. 26515/70. Headings C3C and C3R. Polyurethane foam is prepared by reacting (a) a polyether which contains at least two reactive hydrogen atoms, has a M.W. of 1500 to 10,000 and in which at least 10% of the hydroxyl groups present are primary hydroxyl groups, (b) a polyisocyanate solution which is a solution of a polyisooyanate which contains at least one isocyanuric acid ring dissolved in a monomeric polyisocyanate which is free from isocyanurate groups, and (c) a blowing agent. The polyethers (a) are suitably produced by reacting an alkylene oxide with an initiator molecule followed by " tipping " of the polyether with ethylene oxide if the alkylene oxide is not itself ethylene oxide. The polyisocyanates which contain isocyanuric acid rings are preferably polymeric toluylene diisocyanate, if desired in admixture with 4,4<SP>1</SP>-diphenylmethane diisocyanate and the preferred monomeric polyisocyanates are the said diisocyanates in monomeric form. Water is the preferred blowing agent. Conventional catalysts and foam stabilizers may be added to the reaction mixture as may active hydrogen containing compounds other than the polyethers specified above.
Patent GB-1288726-A (GB)
IPC: H01L27/00
Filed: 1971-04-19
Abstract: 1288726 Semi-conductor devices ITT INDUSTRIES Inc 19 April 1971 [10 April 1970] 26301/71 Heading H1K An ohmic contact is made to a P-type silicon zone via a P + region at its surface, by diffusing phosphorus into this region and then applying contact metal e.g. nickel or aluminium which in a subsequent heating forms a eutectic alloy with the materials of the area contacted. Thus in making a planar NPN transistor in an N-type junction-isolated epitaxial region on a P-type substrate, after formation of a subcollector zone and the epitaxial layer, boron is diffused in to simultaneously form the isolation region and P- type base contact zone. Then after diffusion to form the base zone, oxide masking is provided and phosphorus diffused through it into the base contact zone and to form a collector contact zone and the emitter zone. Use of a nitrogen or argon atmosphere containing phosphine in this process leaves only a small residue of phosphorus at the surface which may, if desired, be removed by a brief oxidation following by etching in hydrofluoric acid. Finally aluminium is evaporated overall, etched to form the contacts and then sintered in nitrogen at 500‹ C.
Patent GB-1288740-A (GB)
IPC: G03G5/09
Filed: 1970-12-10
Abstract: 1288740 Electrophotographic element. RCA CORPORATION 10 Dec 1970 [2 Jan 1970] 58792/70 Heading H1K [Also in Division B6] An electrophotographic element comprising a photoconductive layer on a substrate has portions thereof treated to change the response to light by applying pressure to the portions to compress them. Either the entire surface of the element may be compressed or an impressed or, embossed surface may be formed on either the upper or lower surface of the element using embossed rollers (Figs. 5 and 5a, not shown) or by using a screen template interposed between rollers and the upper or lower surface of the element (Fig. 8, not shown). An hydraulic press with engraved pressure plates may also be used to compress the element. Compressing the element is said to increase the grey scale for halftone reproductions.
Patent GB-1289800-A (GB)
IPC: D05B77/00
Filed: 1971-04-19
Abstract: 1289800 Sewing machine cases SINGER CO 19 April 1971 [22 April 1970] 27254/71 Heading A4B A carrying case 15 for a sewing machine 5 includes a box-like base 10 defining a cavity 25 for receiving the machine bed 6, the base 10 comprising a bottom 20, side walls 22 and endwalls 24, skirts 30, 31 spaced from and parallel to the side and end-walls 22, 24 and apertures 35, 39 formed completely through the side and endwalls 22, 24, the apertures 35, 39 and skirts 30, 31 having a sound-deadening effect when the machine is in use. The bottom wall 20 may also be of apertured, dual wall construction. A cover 11 with a carrying handle 16 is a sliding fit on the base 10. The base 10 is secured by a screw 42 to a base-plate 7 of the machine. Feet 8 of the machine protrude through holes 40 in the base bottom 20.
Patent GB-1290399-A (GB)
IPC: E06B7/30
Filed: 1970-07-14
Abstract: 1290399 Protective window ELEMETA Ltd 28 May 1971 [14 July 1970] 34102/70 Heading E1J A screen comprises two frame elements 12 of oppositely outwardly facing chanel-section, and a panel extending through slots in the elements and secured by adhesive in the channels. The elements 12 are vertical and panels 14 inclined to the vertical.
Patent GB-1290965-A (GB)
IPC: B23B31/12
Filed: 1970-10-09
Abstract: 1290965 Feeding bar stock; lathes HARDINGE BROS Inc 9 Oct 1970 [3 Aug 1970] 48154/70 Headings B3B and B3T A bar stock feed chuck of the type in which a number of inwardly-bowed springs 16 are provided for gripping the bar stock includes an end cap 24 engaging free ends of the springs 16 for adjusting the gripping face, and locking means for securing the cap 24 in an adjusted position.  In one form (Fig. 1) the locking means comprises a split ring 34 accommodated in a groove 30 of the chuck body 10. Projections 36, 38 respectively engage a notch 32 in body 10 and any one of a series of notches 28 in cap 24. In another form (Fig. 6) the locking means comprises a spring wire 52 riveted to the body 10 and engaging through a notch 50 of the body. In a further form (Fig. 12) the locking means comprises a resilient ring 60 having a radial detent 62 which engages one side wall of a slot 14 accommodating a spring 16, and an axial detent 64 engaging in a notch of the cap 24.  The chuck can be affixed to the rotary spindle of an automatic screw machine or lathe.
Patent GB-1295524-A (GB)
IPC: B65D47/28
Filed: 1970-06-16
Abstract: 1295524 Tablet containers E HENDERSON 16 June 1970 [16 June 1969] 29269/70 Heading B8P A container for tablets has a discharge aperture 11 normally closed by a pair of overlapping gates 17, 17a connected by resilient arms 16a to a common base portion 14, each gate being separately movable against the bias of the arm 16a away from the aperture 11. A latch 35 releasable by inward pressure on a knob 19 on each gate holds each gate in the closed position. Holes 31 in guides 20 for the gates are provided for lugs on a lid sealed to the base of the container. Guide grooves for the gates extend across the aperture 11 in both the lid and base.
Patent GB-1296336-A (GB)
IPC: B65H5/30
Filed: 1971-07-16
Abstract: 1296336 Feeding sheets FERAG & REIST AG 16 July 1971 [21 July 1970] 33449/71 Heading B8R A newspaper 1, Fig. 5, comprises twicefolded sheets forming a main fold 3 and secondary folds at the leading end, and is fed along a guide rail 20 by conveyer bands 4, 37 towards a separation wedge 68. Pressure is exerted on a surface of the newspaper in the vicinity of the fold 3 and towards the leading end by a roller 27 carried by a link of a chain 23, and this causes separation of the sheet portions on the two sides of the fold 3 to form a gap 8 into which enters a portion 69 of the wedge 68. An insert is then dropped into the opening through a shoot 70. In another form, Fig. 6, the roller 27 serves only as a conveying element, and the pressure is exerted by a plate 53 revolving about a shaft 51, the plate also urging the paper towards the rail 20. In another form, Fig. 7, for paper products too thin to be fed in a vertical position, the product 1 is conveyed on a horizontal belt 71. Pressure is exerted by rollers 27, and also a roller 81 on an arm 81 carried by a chain 73 flexes downwardly the main fold section of the product, which projects beyond the belt 71. A separation member 84 has an edge 86 parallel to the product and twists into a vertical section 87. The main fold is pressed into an angle formed between a further conveyer band 82 and a vertically disposed band 88.
Patent GB-1297409-A (GB)
IPC: H02K49/12
Filed: 1970-11-05
Abstract: 1297409 Eddy current couplings NERVUSPARIS and F J BALAGNY 5 Nov 1970 [30 Dec 1969] 52729/70 Heading H2A In an eddy. current coupling comprising rotatably coaxially mounted driven and driving rotor shafts 2, 1 respectively connected to a magnetic field generator and a hollow cylinder 3 in which, during operation, eddy currents are generated by relative rotation of the two shafts, the generator includes a plurality of equiangularly spaced excitation coils 19 equidistant from the shaft rotational axis with which their axes are parallel and which are so interconnected that upon energization all like poles of the coils face the same axial direction. As shown, the cylinder 3 is soldered to the shaft 1 via an annular support plate 4 reinforced by radial ribs 5, and has cooling fins 6 associated with an air flow deflector 7. The coils 19 are on magnetic cores 18 disposed between two annular solid or laminated magnetic members 16, 17'having peripheral field-modulating teeth 22 and soldered to a non-magnetic sleeve 9 soldered to the shaft 2 and supported by bearings 10, 11, axial retention being effected by a cover 12 secured by screws 13 accessible via an aperture 14. The coils are fed with current via a wire 24 and slip rings 25.
Patent GB-1301489-A (GB)
Inventor: SIVILOTTI O G
IPC: B21B37/32
Filed: 1969-12-29
Abstract: 1301489 Automatic control of rolling ALCAN RESEARCH & DEVELOPMENT Ltd 29 Dec 1969 [3 Jan 1969] 63145/69 Heading G3R In a system in which off-flatness or thickness of material being rolled is detected at a number of points across its width for on/off control of the heating or cooling of corresponding zones across the width of the rolls to maintain the material of uniform section, the highest and lowest deviations are detected in the "off" zones and "on" zones and utilized to determine changeover between the "on" and "off" conditions. In Fig. 1, strip 35 is rolled between rolls 16, 18 associated with back-up rolls 12 to 14 respectively. A screwdown motor 23 applies pressure to the rolls and hydraulic jacks 28, 30, 31 apply forces between the several rolls as shown. The load on the rolls, detected by load cells 60, automatically controls the hydraulic jacks through a system not shown, and the difference between the hydraulic pressures applied to jacks 28 and jacks 30, 31 is detected by an electrical comparator 90. If this difference is such as to cause excessive bending of the rolls, a logic circuit 84 is influenced to so control valves V 1 -V n  supplying oil to jets 78 and 80, 1-n, that appropriate zones of the rolls outside the width of the strip are cooled to reduce the difference. These outside zones are selected by a unit 96 which is set in dependence on the width of the strip. On leaving the rolls, the strip passes to a transducer roll 70 which detects tension in the strip at a plurality of zones across its width and supplies corresponding electrical signals through slip rings 72, 1-n, and gates 1-n to logic circuits 98, 100, 84 so that roll zones within the width of the strip are cooled or not as necessary to equalize the tensions and hence flatness and thickness across the width of the strip. Maximum and minimum tensions in the zones which are being cooled ("on" zones) are determined by logic circuit 98 and maximum and minimum tensions in the zones which are not being cooled ("off" zones) are determined by logic circuit 100. Then, if the highest tension in the "on" zones is greater than the lowest tension in the "off" zones and the range of tensions in the "off" zones is greater than the range in the "on" zones or the numbers of "off" and "on" zones are in a predetermined relationship, cooling is changed from "off" to "on" in that "off" zone having the lowest tension or vice versa provided that the difference between the highest and lowest tension exceeds a predetermined value and strip speed exceeds a predetermined value or a predetermined time has elapsed since starting up as determined by a unit 114. Manual over-riding control of zone cooling is provided. Suitable transistor logic circuits are described.
Patent GB-1305910-A (GB)
IPC: C04B35/584
Filed: 1969-07-28
Abstract: 1305910 Silicon nitride products JOSEPH LUCAS (INDUSTRIES) Ltd 10 June 1970 [28 July 1969] 37714/69 Heading C1A Silicon nitride products are prepared by mixing silicon nitride powder with carbon fibres coated with a refractory material which aids bonding of C to Si 3 N 4  but prevents reaction between C and Si 3 N 4 , and hot pressing. The bonding material may be a layer of silicon carbide, boron carbides, zirconium diboride or titanium diboride and may also comprise a second layer of Si 3 N 4 . The SiC layer is preferable between 0À1 and 2 microns thick and the Si 3 N 4  layer 1 micron thick.
Patent GB-1306909-A (GB)
Title: Apparatus for and methods of packaging with gas flushing
IPC: B65B25/06
Filed: 1972-01-26
Abstract: 1306909 Seaming non-metallic sheet material PRATT MFG CORP 26 Jan 1972 3565/72 Heading B5K [Also in Division B8] Apparatus for packaging articles 11 with gas flushing includes a former 13 through which separate sealable webs 12 are fed on either side of articles 11, and skip-sealing means 18 which seal the longitudinal edges of the opposed webs while leaving unsealed gas outlets 23 such that an inert or sterilizing gas supplied through nozzles 16 is exhausted through these outlets by soft rollers 25, a second pair of rollers 24 preventing escape of the gas except through the outlets 23. The skip-sealing means may comprise wheels with cut-outs 21, as shown, spring- loaded wheels which are periodically cammed apart, reciprocating sealing jaws, or wheels having serrated peripheries to provide multiple gas outlets. The outlets are sealed, after gas flushing, by wheels 31 with portions 32 corresponding to the outlet positions, and transverse sealing is carried out by bars 27. The webs 12 may be replaced by a single longitudinally-folded web, and may comprise material sealable by heat and pressure, or by pressure alone.
Patent GB-1307854-A (GB)
Title: Powerassisted rack and pinion vehicle steering system
IPC: B62D5/22
Filed: 1969-08-21
Abstract: 1307854 Vehicle power steering CAM GEARS Ltd 10 Aug 1970 [21 Aug 1969] 41684/69 Heading B7H A power assisted vehicles steering system of the rack and pinion kind has a torque sensitive valve 7 interposed between the steering column 1 and the pinion for controlling pressure fluid to a main servomotor 8. The servomotor 8 is rigid or integrated with the valve unit 7 and is of any rotary type, e.g. a roller, vane or gear motor. Alternatively a ram type servo may act on the rack bar at another point such as by replacing the slideway 6A or in a further variant a second servo motor is fitted in parallel with the main servomotor 8 for example with its casing mounted in the location of the bracket 6.