baber/WOPTO huggingface dataset:
Patent GB-345659-A (GB)
Title: Improvements in or relating to hardening alloy steels
IPC: C23C12/00
Filed: 1929-12-19
Abstract: Alloy steels to be case-hardened by nitrogenization are given a preliminary coating of a metal, a metalloid or a metal and a metalloid to facilitate the hardening process.  The alloy steel is preferably cleaned before coating, examples of suitable coating metals and metalloids being copper, silver, platinum, cobalt, molybdenum and arsenic or any combination of these.  The coating may be applied electrolytically, by spraying, by deposition from chemical compounds or by heating the steel in contact with or in the vapour of the metal or metalloid and the coating when sprayed on should have a thickness of the order of 0,0015 inch and when otherwise applied of the order of 0,00001 inch.  The coated steel is heated, preferably to a temperature of from 450-650 DEG  C., and subjected to the action of nitrogen, ammonia or other substance liberating nitrogen for a time, which may be about 90 hours, depending on the thickness of hardened layer required.  The heating in the nitrogenizing gas may be interrupted after a few hours, the steel being allowed to cool to ordinary temperature in the presence of the gas and then being reheated in the gas for a further period.  When using ammonia the gas should be dried and the dissociation restricted to from 20-40 per cent.  Examples are given of coating specified alloy steels with copper by electrolysis or spraying, with silver by electrolysis or spraying, with platinum cobalt or molybdenum by electrolysis and with arsenic by deposition from a solution of arsenic trioxide in concentrated hydrochloric acid or by electrolytic deposition from an aqueous solution containing arsenic trioxide and sodium cyanide or by heating the steel in contact with arsenic powder.  An example is given of coating a steel electrolytically first with copper and then with arsenic.  The process is stated to be particularly applicable to steels containing from 1-20 per cent of chromium and to high manganese steels and alloy steels of specified composition are referred to containing: iron, nickel, chromium and carbon with or without tungsten or manganese; iron manganese and carbon; iron chromium, molybdenum, manganese and carbon; iron chromium, molybdenum, aluminium and carbon.  The process is also stated to be applicable to chromium steels, aluminium chromium steels, silicon chromium steels and chromium molybdenum steels.
Patent GB-1482140-A (GB)
Title: Touch control arrangement
IPC: H04N5/44
Filed: 1974-09-06
Abstract: 1482140 Touch responsive switching systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 Sept 1974 [8 Sept 1973(2)] 39090/74 Heading G1N [Also in Division H3] In a touch responsive switching system one of the electrodes of a touch contact adapted to be bridged by a finger is connected to the input of an amplifier and to the collector of a transistor acting as a direct current source in order to have a satisfactory sensitivity for an increase in finger-tip resistance. In the circuit of Fig. 2 touch contacts S1, S2 are connected via appropriate safety resistors R1, R2 to respective bases of transistor amplifiers Tl, T2 and T3, T4 and also to a respective collector electrode of transistor T1 2 mirror connected with transistor T13. If touch contact Sl is gently touched then a current of 0.3ÁA plus a base current from transistor Tl of 0.05ÁA flows through the finger tip. Slightly conducting transistor T1 causes transistors T7 and T9 to become conductive but not transistors T5 and T8 which are connected to respective flip-flops 1, 2 in the inputs of a memory circuit. Since transistor T9 is conducting a current of 3ÁA flows from mirror connected transistor T10 via transistor T9 to ground and hence current of 6ÁA instead of 9ÁA flows in transistor T15 connected as a current mirror with transistor T 14 to have a reduction ratio of 3:1. Transistor T14 now only draws a current of 2ÁA instead of 3ÁA so that a current of 0À2ÁA instead of 0À3ÁA flows to the inputs of transistors T1, T3 and the base current of transistor Tl is increased. Transistor T1 now conducts more strongly and the higher collector current is sufficient to render transistors T2, T5 and T8 conducting to change the state of flip-flops 1, 2. Diodes Dl, D2 may be connected as shown to increase the switching threshold to prevent switching due to interference pulses. The switch may be used to switch off the sound section or AVC in a receiver or programme changeover. In a simplified version Fig. 1 (not shown) the feedback network is omitted.
Patent GB-1398728-A (GB)
Title: Polynucleotide separation
IPC: C12Q1/6834
Filed: 1972-08-22
Abstract: 1398728 Sequential analysis of polynucleotide PURDUE RESEARCH FOUNDATION 22 Aug 1972 [27 Aug 1971] 39112/72 Heading G1B A process for sequential separation of each of the nucleosides in a polynucleotide comprises:- (1), adsorbing on a strongly basic anion-exchange material a polynucleotide which has had its terminal 3 phosphate group removed; (2), treating the adsorbed polynucleotide with periodate to oxidize unsubstituted cis-hydroxyl groups of the terminal nucleoside unit to dialdehyde groups; (3), adding L-rhamnose to react with and remove any remaining periodate; (4), treating the adsorbed polynucleotide with an amine, for example a solution 1M in cyclohexylamine, 2M in N,N,N',N'- tetramethylglycinamide HCl, to remove the terminal nucleoside unit from the polynucleotide molecule, and with a phosphatase to remove the resulting terminal 3' phosphate group from the remaining polynucleotide molecule; (5), separating the so produced nucleotide from the adsorbed polynucleotide for identification, for example by heating the nucleoside solution in a sealed tube at 100‹C to free the purine or pyrimidine base and determining the base by anion exchange chromatography and repeating steps (2) to (5) inclusive for each remaining unit of the polynucleotide being treated being readsorbed on the anion exchange material prior to steps (2), (4) and (5).
Patent GB-1402454-A (GB)
Title: Sheet registration for printing machines
IPC: B65H7/14
Filed: 1972-08-23
Abstract: 1402454 Feeding sheets MASCHINENFABRIK AUGSBURG-NURNBERG AG 23 Aug 1972 [24 Aug 1971] 39338/72 Heading B8R Registering sheets.-A lateral registering mechanism comprising a feed table 19, Fig. 1, a side stop 5, a laterally movable corrugated plate 2 and co-operating dabber roll 4 for registering a sheet against the stop, and cam means for moving the members 2, 4, 5 up and down and the members 2, 4 laterally, is provided upstream of the members 2, 4 with a rotatable carrier 24, Fig. 3, above the sheet path carrying two light sources 9, 10 and corresponding photo-sensitive devices 13, 12, the reflection points 18, 17 thereof being aligned with an aperture 20 in the table 19, to monitor the lateral position of the sheet with respect to the desired registration line 11. The axis A of the carrier 24 is perpendicular to the sheet feed plane and bisects a line joining the points 17, 18. By rotating the carrier, the distance of the points 17, 18 from the line 11 is variable to adjust the sensitivity of the monitoring device.
Patent GB-1104316-A (GB)
Title: Improvements in clasps for bracelets, necklaces or the like
IPC: A44C5/20
Filed: 1965-09-15
Abstract: 1,104,316. Releasable fastenings. G A Y FRERES. 15 Sept., 1965 [29 Sept., 1964], No. 39401/65. Heading E2A. A clasp for bracelets and the like comprises two elements, one element having two catches engageable with coupling means projecting from the other element the catches having two opposing surfaces between which a spring is located to bias them apart into their fastenig position. One element 21 has notched pins 20 thereon which engage in aligned holes 12, 13 in plates 3, 4 of the other element and in holes 14, 15 in two catches 1, 2 slidable between the plates and with one end of each catch projecting beyond the width of the bracelet. The spring 10 between the catches urges the catches to engage notches 22 in the pins. The clasp is released by passing inwardly the projecting ends of the catches. The outward movement of the catches is limited by pegs 36 on the plate 3 abutting the ends of slots 35 in the catches. The ends of the pins and edge of the holes 14, 15 may have ramps to facilitate automatic engagement of the parts. In a modification the catches comprise substantially U-shaped members which interleave and are spring urged to engage a stud between two limbs.
Patent GB-875777-A (GB)
Title: Improvements in or relating to card indexes
IPC: B42F17/00
Filed: 1957-12-18
Abstract: 875,777. Filing papers. AMUNDSEN, T. Dec. 18, 1957 [Dec. 20, 1956], No. 39407/57. Class 146(1).  A card index is of the kind in which several cards 20 can be secured in register by suspending them near their upper edges from a suspension member 1 provided with pegs 11 and means for suspending the member in a file drawer or compartment. As shown, the suspension member 1 is a plate 1 of metal or plastic, the top of the plate being bent at 90 degrees to form a cover part 2 having projecting ends 3 for engagement with suspension rails. The plate 1 has clamps 4 pressed out of the plate 1 and pressed out legs 5. A wrapper 6 has apertures 7 for engagement with the clamps 4 which thereby suspend the wrapper. A rail 10 having pegs 11 for registering the cards 20 is. inserted in the clamps 4 while a resilient strip 14 having apertures 15 secures the cards on the pegs. The strip 14 is secured to the lugs 5 by a hinge pin 16, while the opposite end has a locking device 17 for engagement with the rail 10. The strip 14 may be replaced by a resilient strip held in place by a locking arrangement at the ends of the row of pegs, e.g., by cut-away parts at the free ends of the pegs.
Patent GB-1485465-A (GB)
Title: Process for the production of a shaped article from a polyester film
IPC: B29C51/00
Filed: 1974-09-10
Abstract: 1485465 Shaped articles from stretched polyester sheet TEIJIN Ltd 10 Sept 1974 39472/74 Headings B5A and B5B Shaped articles are produced by thermoforming a monoaxially orientated post-heat treated polyester film having the following characteristics (i) to (iv): (i) the through view pattern of wide angle X-ray diffraction of the film is diffuse halo, (ii) when the film is heated, while maintained at a fixed width and length, under the temperature rise from room temperature to 160 C. at a rate of 10 C./min. and then at 160 C. for 30 mins., the azimuthal scan of (100) diffraction in the films through view pattern shows four peaks, and, when measured with the monoaxially oriented direction of the film in correspondence with the meridian of said pattern, two pairs of the above peaks confronting each other across the equator, as each connected by the straight lines passing through the centre of said pattern, form a central angle (#) including the equator line of at least 35 degrees but less than 180 degrees, (iii) when the film is dipped in 90 C. hot water for 10 seconds, without applying tension to the film, the shrinkage in the monoaxially oriented direction is no greater than 25% based on the original length of the film before dipping, and (iv) the film has a density no higher than 1À340 g./ml. at 25 C., using a mould heated to at least 120 C., preferably 150-170 C. at which temperature the polyester crystallizes. The polyester is linear and contains units derived from ethylene glycol, from terephthalic acid and optionally from dicarboxylic acids other than terephthalic acid and/or from dihydric glycols other than ethylene glycol, the sum of the molar per cent of other dicarboxylic acid units and other dihydric alcohol units (each based on the total of dicarboxylic acid and on dihydric alcohol components respectively) being not more than 15 mole per cent. The monoaxially oriented heat treated film (of up to 3 mm. thickness) is prepared by stretching, preferably by rolling, unoriented, amorphous film monoaxially at a temperature of from the glass transition point of the film to 100 C., to a stretch ratio of 1À5 to 3 times the original length, and post-heat treating the same film, at a temperature not lower than said glass transition point and preferably up to 100C., under such shrinking conditions as will cause a shrinkage of not more than 50%.
Patent GB-1482624-A (GB)
Title: Self-tapping screw threaded members
IPC: F16B37/12
Filed: 1974-08-20
Abstract: 1482624 Screw sockets A D BARNSDALE 20 Aug 1974 [21 Aug 1973] 39494/73 Heading F2H [Also in Division B3] A self-tapping screw-threaded member, such as a screw, a threaded stud, or the illustrated insert 1, has an external thread form 2, which is fluted or grooved at 10, the or each groove having mutually perpendicular uninterrupted side walls 11, 12 one of which, 12 provides a cutting edge 13 and the other 11 running-out into the thread form 2. The or each groove may alternatively be inclined to the axis of the member 1. The thread form 2 may be of a sharp V-form with a truncated root or be of buttress form. The insert 1 has a tapered insertion end 20 and/or a plain pilot 21.
Patent GB-816597-A (GB)
Title: Anthelmintic composition
Inventor: BROWN NORMAN COOPER
IPC: A61K31/215
Filed: 1957-12-20
Abstract: A veterinary and pharmaceutical anthelmintic composition comprises an ester of dichlorophen (2,21 - dihydroxy - 5,51 - dichlorodiphenylmethane) with an aliphatic acid which may contain 1 to 6 carbon atoms, for example the acetate, propionate, or butyrate. It may be administered in the form of a mixture with an edible diluent or foodstuff, or as a pellet, pill, or capsule, either alone or combined with another anthelmintic, for example piperazine adipate or cyanacethydrazide.
Patent GB-1171678-A (GB)
Title: Electrical connector tab receptacle
Inventor: TEAGNO WLADIMIRO
IPC: H01R13/115
Filed: 1967-08-31
Abstract: 1,171,678. Two-part couplings. AMP Inc. 13 May, 1968 [6 June, 1967; 31 Aug., 1967], Nos. 25966/67 and 39801/67. Heading H2E. A socket contact formed from a sheet-metal blank, comprises a crimping ferrule 17 and a channel-shaped receptacle 1 having portions 10, with flared ends 15, inclined towards the receptable base 4 and slots 3 defining L-shaped spring portions 2 spaced from and higher than a raised central base portion 6 which has a projection 7 to engage a recess in a tag contact (not shown) received between the portions 10 and the springs 2. Apertures 12 are provided in the channel wells to increase the resilience of the portions 10. In another embodiment (Fig. 5, not shown), the apertures 12 are omitted and the raised base portion 6 is replaced by a tongue (18) which is integral with, and extends rearwardly and upwardly from, the receptacle base 4, and has a curved free end.
Patent GB-1306714-A (GB)
Title: Steering mechanisms
IPC: B62D5/24
Filed: 1970-09-19
Abstract: 1306714 Power assisted steering A E BISHOP 27 Jan 1970 [3 Feb 1969] 40009/72 Divided out of 1306712 Heading B7H [Also in Division F2] The subject-matter of this Specification is identical to that described in Specification 1,306,712 but the claims are concerned with a variable ratio steering gear connection coinprising a rack (reciprocated by the servo piston) and a meshing sector gear (formed on the Pitman shaft) the contact surfaces of the tooth profiles being defined by arcs of fixed radius and providing a tight mesh in the on-centre condition and a clearance engagement away from the centre, the pitch lines of the sector and rack moving generally away from the axis of the sector with movement away from the centre.
Patent GB-1083950-A (GB)
Title: Blue-white phosphor
IPC: C09K11/77
Filed: 1965-09-21
Abstract: A phosphor comprises x Al2O3.(1-x)SiO2 : y Ea, where x is between 0.05 and 0.8, preferably 0.25 to 0.5, and g is between 0.0015 and 0.15, preferably 0.015 to 0.125.  The phosphor is prepared by heating between 900-1480 DEG  C. for at least 15 minutes in an atmosphere of ammonia or nitrogen; temperatures above 1480 DEG  C. may be used if a mullite crystalline structure is required.  It fluoresces blue-white upon U.V. excitation in the range 2537-3650 <\>rA. x = 0.3 and x = 0.4 are preferred for exciting radiations of 2537<\>rA and 3650<\>rA respectively, but x = 0.6 can also be used.
Patent GB-1407627-A (GB)
Title: Flexible battery cathode
IPC: G11B23/087
Filed: 1972-08-31
Abstract: 1407627 Battery plates E I DU PONT DE NEMOURS & CO 31 Aug 1972 [3 Sept 1971] 40329/72 Heading B3A [Also in Divisions B2 and H1] A galvanic cell cathode comprises a continuous, conductive, void-free metal sheet selected from lead, aluminium and copper having a thickness of 0À1 to 10 ml., bearing a thin, compressedly attached, adherent coating of a cathodically active inorganic metal compound having a metallic appearance in the compressed state. The cathodically active material may be oxides, sulphide or halides of copper, lead, silver cadmium, zinc, iron, cobalt, nickel and oxides of vanadium and titanium. The cathode is produced by applying the cathodically active material as a powder suspended in a volatile carrier by painting, spraying, or dipping and then subjecting the coated metal sheet to mechanical pressure of 5000 to 50,000 p.s.i.g., e.g. by passing the coated sheet between rollers. The cathodes may be used in high energy cells having as the preferred anode lithium, with a solution of lithium perchlorate in methyl acetate as electrolyte.
Patent GB-893734-A (GB)
Title: Lignin-containing resins and the manufacture thereof
IPC: C08G8/00
Filed: 1959-11-30
Abstract: A reactive resinous composition comprises free lignin and an A-stage resole in mutual solution, said solution having a pH between 3 and 7. Free lignin is defined as the free acid form of alkali lignin, i.e. that which is or is chemically similar to a by-product of alkaline pulping using either the soda or sulphate processes.  The resoles used are usually prepared from phenol itself and formaldehyde, but other phenols, e.g. cresols, xylenols, p-tert.-butyl phenol, p-phenyl phenol, bis-phenols and resorcinol and other aldehydes, e.g. chloral and benzaldyhyde may also be used.  The composition may be dissolved in a solvent, e.g. methanol, ethanol, propanols and water and mixtures thereof; the dissolved resole increases the solubility of the lignin in these solvents and vice-versa.  The lignin (1) lowers the pH of the resole by reacting with the cation of the alkaline catalyst used in its preparation (2) reacts through its alcholic hydroxyl groups with the methylol groups of the resole and (3) promotes the development of linkages at the 2 and 21 positions of the phenol molecules in the further condensation of the resole.  The lignin, before being combined with the resole, may be modified by reaction with formaldehyde, with alkali or by etherification or esterification.  A preferred embodiment of the invention utilizes ammonia catalysed resoles.  The compositions may be spray dried and redissolved in a suitable solvent immediately prior to use. 43 examples illustrate the invention.  Uses lamination and in the preparation of abrasive wheels, brake linings, plywood and flake board.
Patent GB-852885-A (GB)
Title: Rotary file cabinet
IPC: A47B63/06
Filed: 1958-12-16
Abstract: 852,885. Cabinets. WASSELL ORGANIZATION Inc. Dec. 16, 1958 [May 9, 1958], No. 40575/58. Addition to 852,013. Class 52(1) [Also in Group XV] A modification of the rotary file cabinet claimed in the parent Specification is concerned with the vertical panel for closing the opening in the housing. To provide improved access to and to maintain satisfactory storage capacity of the file, the vertical panel is formed of panels 96, 97, and 98, Fig. 1, arranged as shown. The housing has panels 91, 92, 93, 94, and 95 braced by upper and lower T-shaped members such as 99. The upper member 99 is of larger cross-section than the lower member, not shown, to permit the lower member of another housing to nest within the upper member when one housing is superimposed on another. A part circular plate 115, rotatably mounted by roller bearings, not shown, on an axle 101 has removable partition walls 120 engaging slots 116, 118. A roller 124, Fig. 3, on a spring-urged arm 122 engages indentions 110 in a collar 109 secured to the axle 101 to retain the plate 115 in required angular positions, the plate being retained with the panel in closed position by the roller 124 engaging a deeper recess 126.
Patent GB-1412653-A (GB)
Title: Apparatus for attaching a magnetisable machine readable stripe to a commercial document
IPC: G06K17/00
Filed: 1973-08-29
Abstract: 1412653 Applying magnetizable patches to documents BURROUGHS CORP 29 Aug 1973 [8 Sept 1972] 40658/73 Heading B8F An apparatus for applying a magnetizable patch to a bank pass book comprises a pair of opposed pass book guides 62, (64) a reel 26 for holding a backing strip carrying magnetizable patches, a driven sprocket wheel 50 for advancing the backing strip one patch 154 at a time, a pin 46 for stripping the patches from the backing strip, and a driven applicator roller 76 which presses a separated patch 154 on to the pass book and simultaneously moves the pass book upwardly and out of the apparatus. The apparatus may be driven by a motor or a crank handle 96 mounted on a drive shaft 98. Rotation of the shaft 98 is impossible until a pawl 142 is disengaged from a detent 106 associated with the shaft 98, by a pass book tripping an arm 90. Also mounted on the shaft 98 for rotation therewith are two gears, one (116A, Fig. 4) having teeth around its entire periphery and another (116B, Fig. 4) having teeth around only half of its periphery. Gear (116A) meshes with a further gear 126 for driving the applicator roller 76, and the gear (116B) meshes with a gear 120 to drive the sprocket wheel 50. Upon rotation of the shaft 98 an adjustable cam 108 engages a follower roller 134 on a pawl 128 to disengage the pawl from one of a pair of detents 124 in a member 122 to permit rotation of the sprocket wheel 50. When the desired rotation of backing strip has been fed and the teeth of the gear (116B) no longer mesh with those of the gear 120, the cam 108 allows the pawl 128 to engage in the other detent 124. An eccentrically mounted rotatable back-up anvil 80 is provided opposite the applicator roller 7 to permit adjustment of the spacing between the anvil 80 and applicator roller. The pass book guide 62 is adjustable to vary its spacing from the guide (64). The patches include a magnetizable stripe 122 (Figs. 6 and 7) and the backing strip includes sprocket holes (40, Fig. 6) for engagement with the sprocket wheel 50. When the apparatus is set-up a sprocket hole (40) identified by an arrow (38, Fig. 6) on the backing strip is aligned with a mark 56 on the sprocket wheel 50.
Patent GB-943360-A (GB)
Title: Monocrystalline silicon
IPC: C01B33/02
Filed: 1961-11-14
Abstract: In an improvement of the method claimed in the parent Specification for producing monocrystalline silicon, boron (and other impurities) are kept to a minimum in the monocrystalline silicon formed by passing a gaseous mixture which consists of, or includes, a halogen - containing compound of silicon, a halogen-containing compound of boron, the maximum atomic ratio of boron: silicon being 0.1%, hydrogen and a hydrogen halide, over a monocrystalline body of silicon, the surface of the body being heated to a temperature above the equilibrium temperature below which no silicon is deposited from the mixture and below the equilibrium temperature below which no boron is deposited.  In the example silicon chloroform, SiHCl3, is the silicon compound, boron is present as boron trichloride and hydrogen chloride is the hydrogen halide and the molecular ratio of SiHCl3 to hydrogen is at least 2% and the molecular percentage of HCl is between 20 and 100% of the molecular percentage of SiHCl3.  Before the gaseous mixture is passed over the monocrystalline silicon, the latter may be heated in a stream of hydrogen and this may be followed by passing a mixture of hydrogen and HCl over the body before the gaseous mixture is introduced.