baber/WOPTO huggingface dataset:
Patent GB-1265050-A (GB)
IPC: C07D201/14
Filed: 1969-09-24
Abstract: 1,265,050. Caprolactam metal salts. METALLGESELLSCHAFT A.G. 24 Sept., 1969 [24 Sept., 1968], No. 47127/69. Heading C2C. A method of making an alkali metal salt of caprolactam, said alkali metal being selected from lithium, sodium and potassium comprises mixing about 1 mole of caprolactam with about 1 mole of the selected alkali metal in finely divided form in an inert organic solvent with the provisos that: (a) When the alkali metal is lithium the solvent is tetrahydrofuran, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether or triethylene glycol dimethyl ether and the reaction mixture is refluxed; and (b) When the alkali metal is sodium or potassium, the solvent is tetrahydrofuran, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, or a liquid hydrocarbon, said solvent having a boiling point above the melting point of the selected alkali metal and the reaction mixture being at a temperature above the melting point of the selected alkali metal. The products may be used as catalysts in polymerizing caprolactam.
Patent GB-1266409-A (GB)
IPC: C01C1/18
Filed: 1969-04-11
Abstract: 1,266,409. Ammonium nitrate prills. FOSFATBOLAGET A.B. 11 April, 1969 [11 April, 1968], No. 18622/69. Headings C1A and C1B. Ammonium and sodium nitrate prills are produced by prilling an ammonium nitratecontaining melt or solution containing 0-10% by weight of water such that prills of a desired porosity are obtained according to the amount of water employed, the solidification temperature of the melt or solution being reduced relative to the decomposition temperature of the melt or solution by greater more than 10% by weight based of the melt or solution of sodium nitrate, which amount is 20-60% by weight of the amount of ammonium nitrate in the melt or solution. The prilling is carried out by known methods, the sodium nitrate being dissolved in the melt or solution immediately prior to introducing it to the spraying device. In one embodiment the sodium nitrate is added prior to the adjustment of the water content of the melt to obtain the desired water content. The sodium nitrate may also be prepared in situ by simultaneously neutralizing sodium hydroxide and ammonia with nitric acid. The melt or solution to be prilled may also contain other additives, e.g. fertilizer components such as ammonium phosphate, calcium or magnesium nitrates and borates. For agricultural purposes compact prills may be prepared using melts or solutions having a water content of less than 1% by weight to produce fertilizers suitable for beet and cultivated sea-side plants.
Patent GB-1266984-A (GB)
IPC: B23H1/02
Filed: 1969-09-04
Abstract: 1,266,984. Spark-erosion. AGEMASPARK Ltd. 20 July, 1970 [4 Sept., 1969], No. 43813/69. Heading B3V. A spark-erosion machine includes an electrode power supply having a bank of parallel connected power semi-conductors A-E, e.g. transistors, each of which may be disconnected from the bank by an associated switch a-e.
Patent GB-1267070-A (GB)
IPC: D05C9/04
Filed: 1969-07-11
Abstract: 1,267,070. Releasable fastenings. TOWNROWS Ltd. 1 July, 1970 [11 July, 1969], No. 35029/69. Heading E2B. [Also in Divisions B6 and D1] In a device for tensioning sheet material 21 in mutually perpendicular directions in the plane of the sheet (see Division D1), the top edge of each of four side members 12 is provided with a channel 18, Fig. 3, in which the respective edge of the sheet 21 is gripped by a bar 20 of hard rubber or neoprene. A covering 22 of similar flexible material may be provided on the outer flange 23 of each channel. In use, as the sheet 21 is tensioned by pneumatic cylinders 14, Fig. 2, pivoting the members 12 outwardly about hinges 13, the sheet acts on the bars 20 to urge them into an inclined position against a lip 19A.
Patent GB-1289210-A (GB)
IPC: G01P3/48
Filed: 1970-11-05
Abstract: 1289210 Photo-electric frequency measurement LUMENITION Ltd 5 Nov 1970 52775/70 Addition to 1217743 Heading G1A [Also in Division G4] The parent Specification for measuring reciprocations, oscillations, rate of revolution or amount of revolution of a shaft carrying an opaque element between a light source and a photosensitive member is modified in that the output of the photo-sensitive member is fed to an amplifier. In the embodiment of Fig.1 (not shown) the output from the photo-transistor (18) is applied via a three stage amplifier (28, 30, 32) to a meter or counter as in the parent Specification. In the embodiment of Fig. 2 the photo-transistor is replaced by a Darlington pair 38, 40 connected via diodes 44, 46 and amplifier 28, 30 to a meter 58 to give a reading of the rate of rotation of the shaft. A Zener diode 26 is connected across the light source and photo-sensitive member to ensure a stabilized supply. The opaque element of the parent case may be replaced by an opaque disc having a V-shaped slit, Fig. 3 (not shown). Alternatively the disc may have a cut-out portion extending over 180 degrees, Fig.4 (not shown).
Patent GB-1289276-A (GB)
IPC: F16B13/06
Filed: 1970-05-22
Abstract: 1289276 Screw sockets L A MORTENSEN 22 May 1970 [30 May 1969] 24820/70 Heading F2H An expansible socket for anchoring a screw 11  in a hole through a panel 22 or in a wall 25 comprises a deformable tubular anchoring member 13 having at one end an internal shoulder 29 and a portion 14 or 24 to engage the thread of the screw 11, and axial or helical slits or slots 15 along the wall of the anchoring member, and a stiff tubular member 21 removably inserted in the other end of the anchoring member, spaced apart from the shoulder 29. Preferably a soft deformable tube 12 is interposed between the stiff member 21, and the shoulder 29. The slits or slots 15 extend to the outer end of the anchoring member 13. The portion 14 may comprise a plain or screw-threaded bore. The portion 24 is a metal nut to which the anchoring member 13 is moulded. The member 21 may include an end flange (Fig. 13) which abuts an end flange 17 of the anchoring member. Ribs 18 (Figs. 2, 4) below the flange 17 prevent rotation of the anchoring member in the hole. The member 21 is made slightly longer than the panel thickness (Fig. 13) or, when the socket is used in a wall 25, is made long enough to cause a region of reduced radical pressure near the mouth of the hole, to prevent peeling of the wall material round the hole.
Patent GB-1289915-A (GB)
IPC: G01G21/02
Filed: 1971-05-20
Abstract: 1289915 Weighing apparatus METTLER INSTRUMENTE A G 20 May 1971 [4 Dec 1970] 16042/71 Heading G1W The platform 6 of a platform balance is connected by links 7 to load levers 8 pivoted to a housing 17 at 11 and connected together by a yoke 9, at least one force lever 13 pivoted to the yoke 9 being supported in the housing by a strut 15 which is pivoted to the lever 13-and to the housing 17. As shown, there are two force levers 13, each carrying a counterweight 22, arranged to pivot in opposite senses under load. One lever 13 carries a lamp 21 and lens 19 to project an image of a scale 18 carried by the other lever 13 on to a ground glass screen (not shown). Pivots 12, 14 of the levers 13 are knife-edges, the other pivots being flexure hinges. The pivots 16 of the struts 15 are adjustable in the housing parallel to the levers 13 to achieve symmetry of the levers 13 relative to the common pivot axis AA. This makes the zero point of the balance less sensitive to slight inclinations of the balance. Interchangeable additional weights 30, 31, Fig. 4, may be added to a hanger 28 pivoted to the yoke 9 about axis AA to alter the range of the balance. The annular weights are controlled by cams 35 on a control shaft 34, acting via levers 32. On a balance with only one force lever 13, electro-magnetic operation may be used, with moving coil force compensation and inductive or capacitive sensing.
Patent GB-1290570-A (GB)
IPC: E04G15/06
Filed: 1970-09-04
Abstract: 1290570 Installing prefabricated service shafts E-MODUL AB 4 Sept 1970 [27 Nov 1969] 42412/70 Heading E1A A prefabricated service shaft having pipes for heating, plumbing and ventilation is installed in a building during its erection as follows:-a floor thickness portion 11 of the service shaft is placed on the ground floor shuttering 9 and covered by a plate 15, the concrete floor 10 is cast up to the level of the upper surface of the plate 15 and allowed to set, the plate is removed to leave a recess 18 above the portion 11 in the floor into which a storey-high service shaft unit 19 is inserted, the cover plate 15 is placed on top of the shaft unit 19, the upper portion 20 of which is similar to the portion 11, the next floor 21 is cast around the portion 20 up to the level of the plate 15, and the procedure is repeated for each storey, the pipes in the shaft units 19 &c being connected to those in the adjacent units within the upper portions 20 &c at floor levels. Surface treatment of each cast floor may take place before removal of the plate 15, which has downwardly tapering edges 17 to facilitate removal.
Patent GB-1296806-A (GB)
IPC: H05B6/24
Filed: 1971-06-17
Abstract: 1296806 Linings for induction furnaces DEUTSCHE EDELSTAHLWERKE AG 17 June 1971 [1 Aug 1970] 28470/71 Heading F4B A vacuum induction melting furnace comprises a crucible having a lining layer 7 of bricks of sintered fusible lime, an insulated inductive heating coil 1 surrounding the crucible, an insulating ceramic layer 4 between the coil and the crucible to act as a barrier against metal break-out, and a rammed oxide layer 8 between the layer 4 and lining 7, the thickness of the layer 8 being chosen so that in operation it becomes sintered in a zone 9 adjacent the lining 7. The material of layer 8 is a metal oxide which does not form a low-melting point eutectic with lime and it is separated from the layer 4 by a web of spun glass fibres. The non-sintered zone of layer 8 and the glass fibres allow expansion of the inner zones without cracking.
Patent GB-1296867-A (GB)
IPC: C12N1/04
Filed: 1970-09-15
Abstract: 1296867 Drying microorganisms SOC POUR L'EQUIPEMENT DES INDUSTRIES CHIMIQUES SPEICHIM 15 Sept 1970 [15 Sept 1969] 44056/70 Heading A2D [Also in Divisions C6 and F4] A process for drying a culture of a microorganism, ' especially food or fodder yeast though other micro-organisms are mentioned, obtained as an aqueous suspension involves concentrating the suspension and bringing it to a solids content at which it can be formed into granules or pellets by adding sufficient of a dried product similar to the product of the concentration step but of higher solids content e.g., recycled product, forming it into granules or pellets, and drying the granules or pellets by a fluidisation technique, the process being operated in a manner such that the dried product contains no live microorganism. The concentrated suspension to which sufficient dried product has been added, should be dried when its solids content is 28-30% or higher in the case of Saccharomyces yeast, 35-38% or higher for Candida yeast and 56-57% or higher for Torula yeast. A yeast cream of 15% solids content is applied to a rotating filter 1 and the web of concentrated yeast paste which leaves the filter is passed by way of a feed hopper 7 and mixer 8, wherein it is mixed with recycled yeast powder introduced at 6, to a continuous granulator 5. The granules produced in the granulator are dried by fluidisation technique suspended above a perforated vibrating table 9b in chamber 9a by a current of hot air forced into the chamber by a fan 13. A portion of the dried product is recycled to cyclone 17 by the suction of fan 18 while the main mass of dry product passes through sluices 15 and elevator 20 to weighing and sack-filling apparatus.
Patent GB-1297604-A (GB)
IPC: G06V30/144
Filed: 1971-05-26
Abstract: 1297604 Document sorter; recognizing character forms; character recognition INTERNATIONAL BUSINESS MACHINES CORP 26 May 1971 [26 Aug 1970] 17108/71 Headings G4M and G4R A document sorter has means for scanning information on a document to be sorted and developing analog signals from the information, the signals being integrated and analysed to provide signals on one of a plurality of lines to indicate the character scanned. Documents are fed one by one from a stack past three document sensors to a read head in which analog signals are induced. The signals are amplified, clipped, filtered and fed to a voltage controlled amplifier whose output feeds a peak detector controlling the amplification of the amplifier. The signals are further amplified and fed to a series of integrators. A peak detector starts an oscillator and control ring which divides the read cycle into 8 segments so that the character waveform is divided into seven segments which are integrated in 8 integrators, the first integrator intergrating over all time zones, the second over all but the first zone, the third over all but the first two etc. with the integrals being stored on capacitors after successive integrals are subtracted to give the integral for each zone. The data is analysed by fourteen correlation networks and the maximum amplitude produced is used to identify the character and set a character latch. The data is also checked by examining peaks in the waveform from particular time zones and the two sets of data are compared to produce an error signal. Character simulation circuits are provided to check the circuitry. Timing pulses for the transport mechanism are produced in synchronism with the drive system and are counted. Three sensing heads provide signals to control circuitry to identify the positions of the documents and can identify insufficient spacing between cards or an empty hopper or a jam. The sense signals reset a counter which is arranged to produce a jam indicating signal if the count proceeds above a fixed value. The documents are sorted into required pockets and if an error signal is produced the documents are supplied to the last pocket in the row.
Patent GB-1297610-A (GB)
IPC: G03F7/04
Filed: 1971-06-16
Abstract: 1297610 Photo-sensitive materials HOWSON ALGRAPHY Ltd 16 June 1971 28295/71 1189296 Heading G2C A water soluble composition for use in photolithographic plate making processes comprise a water soluble polymer containing up to 50% by weight of acrylamide units and up to 75% by weight of acrylic acid salt units, the percentage of salt units exceeding that of acrylamide units, a water soluble colloid, the ratio by weight of colloid to polymer being from 15:1 to 1:15, and a sufficient quantity of a chromium sensitizer e.g. ammonium dichromate, to render the composition light sensitive. The colloids specified are gum arabic, polyvinyl alcohol and dextrin. In the example an aluminium plate, coated with the composition, is placed in contact with a photographic line positive exposed and developed with a solution of magnesium chloride and lactic acid to remove the unexposed areas, etched, laquered and inked and the remaining hardened coating, together with the overlying laquer and ink removed to give a printing plate.
Patent GB-1301256-A (GB)
IPC: F23G5/10
Filed: 1971-07-22
Abstract: 1301256 Electric incinerators VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY PROEKTNOKONSTRUKTORSKY I TEKHNOLOGICHESKY INSTITUT ELEKTROTERMICHESKOGO OBORUDOVANIA 22 July 1971 34355/71 Heading F4B An electric furnace for burning radio-active waste comprises a drum 5 formed of a coiled metal sheet having end plates 6 and attached to a shaft 7 through which air can pass along ducts 9. For better contact between the air supplied through radial holes 10 and the burning portion of the waste, the end plates 6 inside the drum are provided with two halfdiscs 11. The drum 5 is housed in a stationary pressure-tight housing 14 having a loading pipe 15. a gas draw-out pipe 16, a washing pipe (not shown) and an ash-discharge pipe 17.
Patent GB-1309892-A (GB)
Title: Torque transducers
IPC: G01L3/10
Filed: 1971-02-05
Abstract: 1309892 Torque transducers BRITISH HOVERCRAFT CORP Ltd 1 Feb 1972 [5 Feb 1971] 4009/71 Heading GIN and G1W The torque transmitted by a shaft 10 Fig. 1 is measured by resistance strain gauges 22 located on a reduced diameter portion 13 of the shaft, which is covered by a stiff sleeve member 18, fixed at the output end 12 to the shaft 10 by pins 21, and supplied with splines 20 Fig.2, at the input end 11 to co-operate with a matching spline 20a on the shaft 10, whereby when the torque in the shaft 10 causes spline 20a to come into contact with spline 20 the torque is transmitted via the sleeve 18 and by passes the reduced diameter portion 13. The signal from the strain gauges is taken out by slip rings 23. (For Figures see next page)
Patent GB-1311613-A (GB)
Title: Booklets
IPC: B42D15/00
Filed: 1971-03-15
Abstract: 1311613 Manufacturing books JOHN RIDLEY HAVERGAL 9 Feb 1971 [15 March 1971] 6909/71 Heading B6A A booklet comprises a web of material, e.g paper or plastics, folded in zig-zag fashion to form a plurality of leaves 1, one of the terminal leaves having an integral extension to form both the spine 3, and a containing cover 2, 4. The leaves may be printed on both sides. The spinal folds may be stapled or glued.
Patent GB-1316827-A (GB)
Title: Blow torch head and igniter assembly
IPC: B23K3/02
Filed: 1970-07-02
Abstract: 1316827 Soldering F TASCHLER 2 July 1970 32112/70 Heading B3R [Also in Division F4] A blow-torch head, especially for use with a soldering iron 11, uses propane mixed with air, and comprises a cylindrical sleeve 4 screwthreaded to a nozzle 3 with a disc 5, having a central opening 6 surrounded by a plurality of smaller openings 7, placed across the bore of the sleeve 4, and an igniter 12 is placed upstream of the head. A cylindrical tube 8 protrudes from the opening 6 on both sides of the disc, which results in improved flow characteristics of the combustible gas mixture, and thus improved ignition response and flame characteristics.
Patent GB-1318112-A (GB)
Title: Method and apparatus for inspecting a glass surface
IPC: G01N21/88
Filed: 1970-02-09
Abstract: 1318112 Apparatus for optically examining transparent materials PILKINGTON BROS Ltd H MILLS and L WOODS 19 April 1971 [9 Feb 1970] 6149/70 Heading G1S Apparatus for optically examining transparent materials comprises a light source arranged to direct a beam of light towards the material 2 under examination so that a portion thereof is illuminated and reflects the light to a point 18, and an arrangement for moving the light source about an axis 8 such that the reflected light always passes through the point 18 immaterial of the angle of incidence of the light beam on the material. As shown, a glass plate 2 to be examined for fine scratches in its surface is arranged on a horizontal support 1 which is carried by uprights 3, 4 and crosspieces 5, 6 which also carry a pair of arcuate rails 7. The rails 7 provide an arcuate track for a wheeled carriage 21 which supports the light source and associated lens or mirror system for directing the beam of light towards the glass plate 2. The arcuate track is so curved that when the carriage 21 is moved, either manually or by a motor, cable and winding drum arrangement, along the track, the light beam reflected from the glass plate always passes through the point 18. An observer or measuring device such as a photomultiplier when arranged adjacent the point 18 and preferably behind a slotted screen (25), Figs. 5 to 7 (not shown) is able to observe or sense light reflected from surface defects on the glass surface. A further screen (28) Fig.7 (not shown) may be arranged to prevent stray light from the source affecting observations or measurements.
Patent GB-1320586-A (GB)
Title: Horse-shoe
IPC: A01L3/02
Filed: 1970-09-22
Abstract: 1320586 Horseshoe M B KIRKPATRICK A G HARVEY and J M SPARKS III 22 Sept 1970 44957/70 Heading AIM A horseshoe 16, Fig. 6, has a smooth lower surface 23 that is effectively a continuation of the original concave surface of the sole 21 of hoof 19, and an outer peripheral face 24 inclined at substantially the same angle as and disposed as a substantial continuation of the outer periphery 25 of the hoof. In Fig. 6 the horseshoe is attached by nailing through a number of holes, but in a further embodiment (Figs. 11 and 13) it is fitted in slipper fashion with only two rear nails 37 to prevent displacement.
Patent GB-1324404-A (GB)
Title: Fabric bonding process
IPC: D06M17/08
Filed: 1971-04-19
Abstract: 1324404 Laminates IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [12 March 1970] 11931/70 Heading B5N [Also in Division C3] Fabrics are bonded by applying to a fabric surface a polyamide, contacting with a second surface, and applying heat to soften the polyamide. The polyamide may be applied as a powder to a cotton base-cloth at 1 oz. per square yard, and a cotton material may be bonded to the base-cloth by use of a hand-iron set so that the interlining temperature is 150-155 C. The polyamide consists essentially of, by weight, 20-62% nylon 6À9 units, 25-65% nylon 6 units, and 0-30% nylon 6À6 units, randomly distributed, and has softening-point 120-160 C. The number-average particle size of the powder may be 100-300 Ám. Also present may be #10% of other nylon units, e.g. derived from H 2 N- (CH 2 ) 2-5 -NH 2 , H 2 N-(CH 2 ) 10 -NH 2 , of H 2 N- (CH 2 ) 12 -NH 2 , or from oxalic, succinic, suberic, sebacic, dodecanoic, terephthalic, or isophthalic acids.
Patent GB-1339127-A (GB)
Title: Pallet
IPC: B65D19/00
Filed: 1971-04-19
Abstract: 1339127 Load handling pallets IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [2 Feb 1970] 4828/70 Heading B8H A pallet is formed of a plurality of parallel beams connected together, each beam being formed of a thermoplastic material and having an I-section with two openings in its web for the forks of a lift truck. As shown, the web of the beam is formed with reinforcing ribs 18 and fork openings 6, 7 surrounded by strengthening flanges 8, 9 and with further openings 10-13 surrounded by flanges 14-17 which extend laterally beyond the upper and lower flanges of the beam. The beams are connected together to form a pallet by butt-welding the adjacent edges of flanges 14-17 or by securing tubular tie beams within the openings 10-13. In a second embodiment, Figs. 8-12 (not shown), the openings 10-13 are replaced by openings at the upper and lower edges of the beam. A pallet is formed by interconnecting three parallel beams and intermediate upper and lower part-depth beams formed with apertures and surrounding laterally-projecting flanges corresponding to those of the main beams, thereby forming a four-way entry pallet.
Patent GB-1340672-A (GB)
Title: Treatment of rubber
IPC: C08G18/69
Filed: 1969-11-28
Abstract: 1340672 Vulcanizing rubber NATURAL RUBBER PRODUCERS RESEARCH ASSOCIATION 18 Nov 1970 [28 Nov 1969] 58403/69 Addition to 1185896 Headings C3E and C3P [Also in Division C2] Unsaturated natural or synthetic rubber having improved resistance to degradation is obtained by providing a mixture of the rubber with a pre-reaction product of (i) an aromatic nitroso compound of the formula wherein Ar is an arylene group which may be substituted, and R is a saturated or unsaturated aliphatic group or an aryl, aralkyl, alkaryl or heterocyclic group which may be substituted, with (ii) an organic isocyanate; and heating the mixture. Specified synthetic rubbers are cispolyisoprene, polybutadiene, styrene-butadiene copolymers, acrylonitrile-butadiene copolymers and polychloroprene. The treatment may be applied to the rubber both in the latex and in the dry form. Examples are given in which natural rubber and specific synthetic rubbers of the types specified above are treated and tested.