baber/WOPTO huggingface dataset:
Patent GB-1397288-A (GB)
Title: Analogue to digital converters
IPC: H03M1/00
Filed: 1972-12-05
Abstract: 1397288 Analogue to digital converter COMARK DATA GROUP 5 Dec 1973 [5 Dec 1972] 56011/72 Heading G4H In an analogue-to-digital converter of the type in which clock pulses are counted during the time taken for a comparison signal to change from an initial value to the value of the input analogue, switches 14, 15 are provided for alternately connecting to the comparator 10 the input analogue Vin and a reference signal Vref which is used for resetting the comparison signal to its starting value which thereby equals Vref plus automatic correction for drift in the comparator 10. If a high gain amplifier (not shown) is included at the input 12, its drift is also compensated. As shown, at the start of a cycle (t 2  in Fig. 2, not shown) Vin is connected to 12, counting gate 33 is enabled, and one of two current generators 20, 21 depending on the sign of Vin, is started, its current being integrated by a capacitor 18 to provide the comparison signal at 11. When this reaches Vin the current generator is stopped and gates 33 disabled. After a delay for settling, which is preferably long enough to obviate the use of latches in the display 37, multivibrator 26, via bistable 27, changes over switches 14, 15 to connect Vref to 12. The other of the current generators 20, 21 is started and the voltage at 11 ramps down until Vref + drift is reached. If Vin is from a thermocouple, non-linearity may be compensated by changing the value of the current from generators 20, 21 when certain counts are reached by counter 35. Multivibrator 26 may be locked on to the clock pulse generator 34. Modifications.-A staircase comparison signal may be used instead of a ramp. The control logic may be formed as a single MOS chip, Fig. 6 (not shown).
Patent GB-1347079-A (GB)
Title: Process for the preparation of a pyrazolone derivative
IPC: C07D231/40
Filed: 1971-12-03
Abstract: 1347079 Pyrazolones FUJI PHOTO FILM CO Ltd 3 Dec 1971 [4 Dec 1970] 56347/71 Heading C2C A pyrazolone derivative of general Formula I wherein R represents H or C 1-6  alkyl, A represents the radical wherein R<SP>1</SP> is H, alkyl or alkaryl, and R<SP>2</SP> is alkyl or alkaryl, and B represents a phenyl group or a group of formula wherein X represents alkyl, alkoxyl, optionally substituted aryl, aryloxy, cyano or halogen, and m is 1 to 5, and X may be the same or different when m is greater than 1; is prepared by condensing in acetonitrile a compound of Formula II with a compound of Formula III The compound of Formula II may be prepared by reaction of an acetyl chloride derivative of formula AO.CHR.COCl with m-aminobenzoic acid and thionyl chloride successively.
Patent GB-1364900-A (GB)
Title: Building assembly for the erection of an arched resiliently flexi ble building member
IPC: E04C3/38
Filed: 1971-12-10
Abstract: 1364900 Arched buildings E J COHEN 8 Dec 1972 [10 Dec 1971] 57557/71 Addition to 1202706 Heading E1A An improvement in or a modification of the building assembly disclosed in Specification 1,202,706 resides in forming the elongate building member thereof from at least two submembers 10A, 10B which are inter-connected end-to-end by a flexible member 11 A in order to give a greater camber to the resultant arch structure than in the parent Specification; the members 10A, 11A, 10B being flexed by jack means 20 acting on a tensioning cable 17. When the assembly is erected the cable is secured by clamps to the brackets 18 carried by the members 10A, 10B. In a modification, see Figs. 1 and 2 (not shown), the members 10A, 10B are pivoted together and connected to a somewhat modified arrangement of cables.
Patent GB-1448152-A (GB)
Title: Providing screw-threaded articles with locking patches
IPC: B05B15/04
Filed: 1973-12-12
Abstract: 1448152 Coating internally threaded articles U S M CORP 12 Dec 1973 [13 Dec 1972] 57632/73 Headings B2E and B2L [Also in Division F2] An internal thread of an article having a screw threaded bore, for example a nut 10, is provided with a patch of resilient thermoplastic resinous material such as polyester or nylon 11 by (a) heating the article, for example by an induction coil 24, or flame or oven (not shown), to a temperature above the melting point of the thermoplastic material, (b) directing a gaseous stream in which fine particles of the thermoplastics material are entrained through the bore from one end 22 of the articles so that the stream impinges on the threaded surface to fuse thermoplastic particles onto the threaded surface and build up a locking path, and (c) applying suction adjacent the other end 20 to remove excess particles. Preferably, the particles contained in a hopper 28 are entrained by a stream of air in a chamber 30 and pass through a nozzle 36 onto a converging channel guide 40 which is arranged to protect the lower thread of the nut from being coated. A shield 48 prevents particles reaching the lower surface 50 of the nut 10. The stream then sweeps the particles upwards to be fused onto the threaded surface or sucked into a vacuum nozzle 52. The nut may be cadmium and chromate treated and then primed in the area where the locking patch is to be formed by applying a polyamide, epoxy, or resorcinol/aldehyde resin from solution. Alternatively a minor amount of particles of these resins can be added to the thermoplastics particles.
Patent GB-1208800-A (GB)
Title: Improvements in or relating to electrical supervisory systems
Inventor: HARRISON ROBERT L
IPC: G08C25/02
Filed: 1968-12-04
Abstract: 1,208,800. Remote indicating apparatus. HONEYWELL Inc. 4 Dec., 1968 [19 Dec., 1967], No. 57663/68. Heading G4H. In a system for indicating at a central station the conditions of devices located at remote stations, each remote station has means to detect and signal a change in condition of the corresponding device and further means to detect and signal the condition of the device, the central station having means for indicating the conditions of all the devices the change detection means being scanned to determine which is providing an output signal and the corresponding condition detector being thereby coupled to the corresponding indicating device at the central station. Remote stations 1, 2 &c. are connected to the central station 10. The device of which the condition is to be indicated is a two-position switch having a grounded arm engageable with contacts 15 or 21, manually or under the control of sensing device 20, e.g. a thermostat. The change detector 22 includes a resistor 26 connected to a positive source and via diodes to the two contacts 15, 21. When the arm 14 changes over both diodes are temporarily ungrounded and a positive pulse is applied to a flip-flop 25 which sets and produces a signal on line 24. The scanning means 11 begins scanning in response to a signal on one of the lines 24 and having found the marked line, energizes a solenoid 35 at the corresponding remote station operating contacts 40, 41, and 52. Contacts 40 41 connect the contacts 21 and 15 to the central station so that whichever is closed presents an earth signal lighting a corresponding one of lamps 45, 50. Other lamp pairs are provided for other remote stations. A positive pulse through contacts 51 resets flip-flop 25. The components in block 32 could be at the central station, a single resetting contact 51 then sufficing for all remote stations. The scanning means may cycle continuously.
Patent GB-1377515-A (GB)
Title: Process for the depostion of metal laywers on shaped articles of polyesters
IPC: H05K3/38
Filed: 1971-12-15
Abstract: 1377515 Photo-resist materials KALLE A G 15 Dec 1971 [17 Dec 1970] 58245/71 Heading G2C [Also in Division C7 and H1] In the manufacture of printed circuits, (A) a polyethylene terephthalate film is (1) degreased (2) treated with a solution of PdCl 2  and trichloroacetic acid (3) dried, (4) treated with a solution of NaOH and hydrazine hydrate (5) electrolessly plated in a Cu-HCHO bath (b) electrolytically thickened with Cu from a CuSO 4  bath (7) coated with a napththoquinone diazide photoresist containing a novolak and polyvinylacetate  (see Example 3), exposed and developed with Na 3 PO 4  and ethylene gylcol methyl ether, (8) the bared Cu is removed by etching and (9) the photoresist is removed by solvent to leave a positive printed circuit. Alternatively, (B) A substrate is coppered using steps (A) (1) to (5) and photographically treated as at (7); one part of the board is etched and the photo-resist removed as at (8) and (9), and the remaining Cu thickened as at (6) to give a positive printed circuit; (C) the other part of the board, after steps (1) to (5) and (7) is thickened as at (6) on the bared Cu areas, and decoated (9) and etched (8) to give a negative printed circuit. Alternatively (D), procedure (C) is repeated by thickening with electrolytic Ni instead of Cu as in step (6). In Example 8, a polyethylene terephthalate film is coated with a photopolymerizable material, coated with polyethlene terephthalate by pressure rollers, the laminate is exposed, the covering film pulled off, and the photopolymer layer developed; the resulting body is degreased, neutralized, treated using steps (A) (2) to (5), the etch resist is removed by wiping with methylene chloride, and the Cu film is thickened as at A (6) to give a positive circuit diagram.
Patent GB-1370901-A (GB)
Title: Rotary machine tools
IPC: B23D65/00
Filed: 1971-12-14
Abstract: 1370901 Making rotary tools; milling cutters; abrasive tools NORA-GOMEX AB 14 Dec 1971 [14 Dec 1970 20 April 1971] 58327/71 Headings B3A B3D and B3K [Also in Division B5] A method of manufacturing a rotary cutting tool 1, Fig. 4, for example, circular saw blades, milling cutters, grinding discs or diamond saws consisting of at least two portions 2, 3 which are connected so as to damp oscillations and acoustical vibrations during rotation, comprises hot pressing the portions together at 400-440 C., surface grinding the portions, straightening and degreasing the portions, and gluing the portions together. An electrically conducting material, e.g. Cu, Al or Fe powder, is mixed into the glue 9 to allow spot welding of the portions at random points (5<SP>1</SP>), Fig. 10 (not shown), on the surfaces of the portions which consist of substantially circular discs, the periphery of which is provided with saw teeth, 4, Fig. 1, or shoulders for the securing of cutting edges 10. The combined portions are then re-ground and trued. Solder may also be applied to a peripheral region of the portions whence heating by high frequency induction apparatus after soldering cutting pieces 25, Fig. 6, to the combined portions, allows more intimate joining of the portions. The manufactured tool, preferably of hardened steel, can comprise more than two portions which combine to form a disc-like unit. The portions may be of equal or unequal thicknesses, Figs. 9, 11 (not shown), of different shapes to each other, may comprise a hub-like part 22 and one or more peripheral parts 23 which may be riveted into place, or one portion may comprise a plurality of further portions (12)-(16), Fig. 5 (not shown), which are cut or stamped out and subsequently rejoined to the disc-like unit. These stampedout portions, which may be of various geometric forms, can be glued or welded back into place. The glue used may be an epoxy type and include a hardener, and the solder may be a silver solder with Cu, Zn, Cd and fluxing material additions.
Patent GB-1207546-A (GB)
Title: Multiple electrode vaccum arc furnace and method of remelt purification
IPC: C21C5/52
Filed: 1968-12-10
Abstract: 1,207,546. Casting processes. UNITED AIRCRAFT CORP. 10 Dec., 1968 [11 Dec., 1967], No. 58515/68. Heading B3F. [Also in Division H5] A process for the vacuum arc purification of a metal comprises forming the metal to be purified into a plurality of consumable electrodes 9, uniformly spacing the electrodes in a furnace, maintaining a vacuum in the furnace, forming an electric arc at the surface of each electrode so as to melt the metal, and forming the molten metal into an annulus in the furnace, both the internal and external surfaces of the annulus being cooled. The electrodes may be in the form of ring segments (30), Fig. 3 (not shown), and are lowered by motors (11) as they are consumed. The current flowing through each electrode is monitored by inductive means (29), Fig. 1 (not shown), connected to a comparator (20) which causes the motors (11) to adjust the positions of the electrodes 9 so that the current flow through all the electrodes is substantially equal. Cooling water is supplied to a water jacket 3 via inlets 6 and 6<SP>1</SP> and leaves via outlets 7 and 71
Patent GB-1363159-A (GB)
Title: Rotary tools
IPC: B25B21/00
Filed: 1972-12-19
Abstract: 1363159 Screwdrivers WEBER SCHRAUBAUTOMATEN GmbH & CO KG 19 Dec 1972 [26 July 1972] 58641/72 Heading B3N A screwdriving device comprises a screwdriver blade 7, a piston 8 movable in a pneumatic cylinder 9 and operative to longitudinally move the blade, and a pneumatic motor 13 operative to drive the blade through a torque clutch 19, the motor being mounted on the piston which is secured against rotation. In operation air passes from air connection 2 to air chamber 11. Bore 10 allows air to pass into the pneumatic cylinder and move the piston and blade 7 towards collet 5. Air also passes along spaces 12 and 17 to enter the motor housing, and thus the motor through aperture 18. Exhaust air passes along duct 23. Screw supply tube 6 is swung out of the way by blade 7.
Patent GB-1434730-A (GB)
Title: Closures for containers
IPC: B65D/
Filed: 1972-12-20
Abstract: 1434730 Caps with tear-out panels METAL BOX Ltd 3 Jan 1974 [20 Dec 1972] 58732/72 Heading B8T A closure of the kind comprising a one-piece cap 10 having an end panel portion 13 surrounded by an integral continuous peripheral portion 15 having a terminal edge 18 for engagement with a container, the cap having lines of weakening which define a tear-out panel 36, and a pull tab 37 to aid in rupturing the lines of weakening is characterized in that the tear-out panel 36 is defined by first and second lines of weakening 27, 28 joined at one end and extending on the end panel portion 13 to terminate in the peripheral portion 15, the first line 27 terminating adjacent stop means, e.g. projection 34, and the second line 28 being of substantially greater length on the end panel portion 13 than the line 27 and terminating at or adjacent the terminal edge 18, the pull tab 37 being carried by the tear-out panel 36 in the region of the joined ends of the lines 27, 28. The cap 10 is preferably of dished form and reinforced to resist internal pressure in the container. In the preferred embodiment, strengthening ribs 40 are provided adjacent the junction 29 of the lines 27 and 28. A strengthening rib 39 may also be provided on the tear-out panel 36. The first weakened line 27 is prevented from extending to the periphery 18 by a projection, a slit or a hole in the skirt 17 of the peripheral portion 15. A notch 35 is preferably provided in the periphery 18 adjacent the end of the second weakened line 28 to prevent rupturing of the line 28 during engagement of the cap with the container by the turning under of the periphery 18. The cap may be formed of metal or plastics.
Patent GB-1247860-A (GB)
Title: Sterilization
Inventor: HEMEL NICO JACOBUS AUGUST VAN
IPC: A23L3/00
Filed: 1968-12-11
Abstract: 1,247,860. Sterilizing apparatus. UNILEVER Ltd. 11 Dec., 1968 [13 Dec., 1967], No. 58919/68. Heading A2D.  In an apparatus for thermal treatment, e.g. sterilizing of products in hermetically sealed containers, the containers are passed as a train of mutually contacting units through an openended tube and are subjected to a thermal treatment while within said tube, the increased pressure within the containers resulting from the heating being compensated for. In one embodiment, containers, having lids heat-sealed thereto around their edges, are loaded into supporting moulds attached to successive carriers of a chain conveyer, a horizontal flight of which conveyer passes through an open-ended tubular channel. The supporting moulds are so shaped that they substantially seal the interior of the channel from the atmosphere, and support each other and hence also the ends of the containers. The channel includes sterilization and cooling sections where pressurized steam or hot water and cooling water, respectively, are introduced. - In the preferred embodiments, a vertical cylindrical tube 13 is used. As shown in Fig. 2, in which supporting moulds 28 holding the containers to be treated are fed into the top of the apparatus and discharged from the bottom, the tube 13 is roughly divided in sections as follows: a pressure building section 14, a secondary outlet 16 for treating medium leaking past a subsequent sealing section 17, a thermal treatment space 19 fed with steam or water, a sealing section 21, cooling space 22 supplied with cooling medium, a sealing section 25 for the cooling medium, and a discharge mechanism 27. The discharge mechanism 27 comprises a pneumatic ram operating in conjunction with a pair of pawls (39), Fig. 5 (not shown), that engage the underside of the top edge of the lowermost mould 28. Reciprocation of the pneumatic ram delatches the pawls from the lowermost mould 28 to lower the whole column of moulds 28 and relatch on the next lowest mould 28 in the column and thus removes the moulds 28 singly in turn. Dependent on the weight of the filled containers and supporting moulds 28, their weight alone may be sufficient to counterbalance the pressure build-up within the containers due to heat. Alternatively, a modified apparatus, in which the pressure building section 14 is replaced by a pressing mechanism (15), may be used. The mechanism (15), Figs. 3, 4 (not shown), utilises two pneumatic cylinder devices in conjunction with a latching mechanism to maintain a continuous pressure on the column including while loading it with moulds 28 singly as they are unloaded from the bottom of the column. The heating and cooling mediums may additionally be pressurized.
Patent GB-1193400-A (GB)
Title: Improvements in or relating to Coloured Halogen Lamps
IPC: H01K1/32
Filed: 1968-12-12
Abstract: 1,193,400. Metal resinate lacquers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 12 Dec., 1968 [15 Dec., 1967], No. 59092/68. Heading C4A. [Also in Divisions C1 and H1] The quartz envelope of a halogen lamp is provided with a fired coloured layer of a lustre lacquer, which is defined as a solution of metal salts of resin acids in ethereal oils. An example of a yellow lustre lacquer is given which comprises two parts of bismuth resinate in three parts of uranium resinate dissolved in a volatile oil, for example camphor oil, cedar oil or rosemary oil.
Patent GB-1277816-A (GB)
Title: Foamed plastics concrete form
IPC: E04B2/86
Filed: 1969-12-03
Abstract: 1277816 Permanent shuttering ROHERBOHM Ltd 3 Dec 1969 [20 Dec 1968] 59145/ 69 Heading E1B Permanent shuttering for reinforced concrete wall comprises a plurality of interlocking foamed polystyrene, polyurethane or urea formaldehyde polymer elements 10 each comprising spaced facing panels 11 and 12 having a plurality of projections 13, 14, 15 interconnected by embedded metal webs 40 which may be foraminous and defining a plurality of cavities 16. The webs may be moulded in situ with both faces or may comprise two interconnectable members one embedded in each panel. Horizontal reinforcing rods for the wall are located in grooves 24 and vertical reinforcements by members 30 having downward projections 31 to engage notches 32. The lowest course of units is positioned on a footing which has dowels extending into the cavities 16. Undercut grooves 35 provide keying for plaster. Two coatings of plaster followed by bitumen are applied to an exterior face for below ground use.
Patent GB-591605-A (GB)
Abstract: 591,605. Temperature-responsive actuating elements. BRITISH THOMSON-HOUSTON CO., Ltd. April 6, 1945, No. 8586. Convention date, April 8, 1944. [Class 64 (ii)] [Also in Group XXXVII] A temperature responsive actuating element, suitable for operating an overload protective device of the electric inductive type as described in Specification 541,418, [Group XXXVII], consists of a bimetallic strip 10, Fig. 3, edgewise wound into a helix with the turns forming a frustum of a cone having an angle less than 180 degrees. The response to temperature changes is non-linear, the angle of movement for a given change in temperature increasing as the turns extend at a decreased angle with respect to the axis of the helix. The final rapid increase in the force applied by the thermostat provides positive operation of the protective device.
Patent GB-1460039-A (GB)
Title: Dehydroxylation of amino-glycosides
IPC: C07H15/00
Filed: 1973-12-21
Abstract: 1460039 Silylated deoxyneomycins and deoxykanamycins TAKEDA YAKUHIN KOGYO KK 21 Dec 1973 [29 Dec 1972 (2) 24 May 1973 (2) 9 July 1973] 59635/73 Heading C3S [Also in Division C2] 31 - Chloro - 31 - dioxyneomycin A is acylated and silylated to obtain the tetra-N- acetyl - tri - O - trimethylsilyl derivative. 31 - Chloro - 3<SP>1</SP> - deoxy - kanamycin B is acylated and silylated to obtain the penta-N-acetylpenta-O-trimethylsilyl derivative.
Patent GB-1317078-A (GB)
Title: Organ keyboard switching system
IPC: G10H1/34
Filed: 1971-12-23
Abstract: 1317078 Electrophonic musical instruments MATTEL Inc 23 Dec 1971 [22 Jan 1971] 59857/71 Heading G5J An electronic organ keyboard system comprises a set of contact regions arranged in a row, a strip of stretchable conductive elastic material which extends parallel to but spaced from said row, and a plurality of moveable members positioned such that on depressing a particular key an associated moveable member presses and stretchably deflects the elastic strip against a corresponding contact region. Each key 28, Fig. 2, is pivotally mounted on a bar 30 such that when the key is depressed the rearward portion 34 moves upwardly against the associated moveable switch member 36. The members 36 are constructed of a resilient electrically conductive material and are held in place by bars 38, 40 mounted on the housing 42, with a bus bar 44 electrically connecting the switch members together. A contact assembly 46 is mounted above the switches and comprises a circuit board, on which are mounted conductive strips (not shown) and conductive pads 50, and the conductive elastic strip 56 mounted on insulative spacer strips 52, 54. Upon depressing a key the associated switch member is urged upwards such that a contact portion 36E presses and stretches a region of the strip 56 into contact with the corresponding pad 50. When the key is released the switch member moves down to its original position and the stretched portion of the strip contracts to its original position spaced from the row of contact pads. In order to obtain a more rapid return of the strip when the key is released one spacer 54 is thicker than the other spacer 52 such that the strip is inclined with respect to the contact pads. Each contact pad 50 is connected to a separate tone generator comprising a photo-cell responsive to a light beam shining through a transparent track of a disc record. To prevent any popping sounds which may be produced on closing a switch due to transients resulting from the D.C. bias produced by the photo-cells the elastic strip is connected to earth via a capacitor. One electrode of each photo-cell is connected to earth and the second electrode is connected to a contact pad 50. The common bus-bar to which the moveable switch members are connected is itself connected to speaker means via a capacitor, also provided to prevent transients. Signal transients are reduced due to the fact that the elastic strip undergoes a resistance change as it is stretched. When the switch member first makes contact the resistance is high and any signal is attenuated until the elastic strip is pressed hard against the contact pad at which point the resistance is greatly reduced. In an alternative embodiment the moveable switch members are made of non-conductive plastics material and the connection to the speaker means is taken from the elastic conductive strip.