baber/WOPTO huggingface dataset:
Patent GB-1299496-A (GB)
Title: Rapid curing resin compositions
IPC: C08L61/10
Filed: 1970-04-29
Abstract: 1299496 Compositions containing aminemodifled aldehyde resins, an aldehyde and an epoxy resin WEYERHAEUSER CO 29 April 1970 [5 May 1969] 20628/70 Headings C3B and C3R A rapid-curing resin composition comprises (a) the reaction product of an aldehyde condensation polymer having reactive alkylol groups and an amino compound of the formula (i) wherein X 1  is -NH 2  or -CH 2 NH 2 ; X 2  is -X 1 , -OH or, -OCH 3 ; X 3  is -X 1 , -COOH, -NO 2 , -OCH 3 , -OH, -CH 3 , -NHCOCH 3 , -H, or -A-C 6 H 5 , where A is (-CY 1 Y 2 -) z , -SO 2 -, -NH-, -O-, -S-, Y 1  and Y 2  being H or C 1-3  alkyl groups, and z being 0, 1, or 2; and X 4  is H or a C 1-4  alkyl group, (ii) wherein R and R<SP>1</SP> are each H or an alkoxy, amino, hydroxy, nitro, carboxy or C 1-4  alkyl group, and X is as A above, or (iii) wherein R may be amino in any ring position, or hydroxy in the 2, 5, or 8 position when the amino group is in the 1 position, or an amino compound which is (iv) 2 : 3-, 2 : 4-, 2 : 6- or 3 : 4 - diaminopyridine, 4 : 6 - diaminopyrimidine, pyrrole, 2 : 4-dimethylpyrrole or N-methylpyrrole; (b) an epoxide, and (c) an aldehyde, (b) and (c) being present in amounts sufficient to cause the composition to become infusible. Suitably (b) amounts to 10-50% of (a) plus (b), and (c) to 0À02-1 part per part of (a), by weight. In the examples a mixture of 55% formaldehyde in water/methanol with chrysotile asbestos and an epoxy-novolac or diglycidyl ether of bisphenol or propylene glycol is added to a "high-ortho" phenolformaldehyde resin, an acetone-formaldehyde resin, a urea-formaldehyde resin, a ureamelamine-formaldehyde resin or a phenolformaldehyde resole, which resin has been modified with meta-phenylene diamine, metahydroxy aniline or 4-amino-salicylic acid and optionally has been mixed with asbestos and a little concentrated hydrochloric acid. In Example 10 similar compositions are prepared using a variety of modifying amines. Uses.-Adhesives for wood, metal, fabric &c.
Patent GB-1015889-A (GB)
Title: Improvements in or relating to the simulation of radar displays
IPC: G09B9/40
Filed: 1962-05-29
Abstract: 1,015,889. Radar simulators. GENERAL PRECISION Inc. May 29, 1962 [May 29, 1961], No. 20631/62. Heading H4D. The subject matter of this Specification is substantially the same as that in Specification 1,013,785, the claims however are directed towards the shadow computer 18, Fig. 2, which is also described in greater detail. The shadow computer is used to blank out the video signals from the photomultiplier 27, which arise from supposed terrain between points such as 59 and 60, Fig. 5b, which is normally obscured from the aircraft by the hill point 59, and which would appear as a blank space on an actual radar presentation. The shadow computer is fed with three signals, viz. the terrain altitude signal e(t), the aircraft altitude signal h and the horizontal instantaneous scanning range ramp signal R(t), and is used to generate a blanking signal from when the vertical scanning angle # or tan #, starts to decrease, until the angle again reaches the value it has when it started to decrease. As the arrangement of Fig. 3 is used, wherein the e(t) and - h signals are applied to a log amplifier 62 to give- Log(h - e(t)), the R(t) signal is converted to Log R(t) in log amplifier 65 and the two log signals are combined in summation amplifier 64 and passed through anti-log amplifier 68, to give a tan # signal at point 69. The tan # signal is applied directly to a comparator 20 and is also applied through an inverter 71 to a memory device 19 which stores and passes to the comparator the maximum value of - tan # reached. By this means the resulting signal at the comparator becomes negative between the points 59 and 60, resulting in the emission of the blanking pulse. The maximum signal stored in the memory device is periodically reduced to zero by signals from the .timing generator 53. The inverter comprises, Fig. 4, a feedback amplifier 76, and applies the resulting negative signals to the base of a PNP transistor 80 which conducts to negatively charge up a capacitor 82 as long as the signal is increasing. The negative maximum signal is therefore applied to a comparator transistor 90, .together with the instantaneous tan # signal. In the region 59 to 60, Fig. 5b, the resulting sum signal is negative, giving an output of - ¢ v. at the output of amplifier 89, the output thereof being clamped between + and - ¢ v. by diodes 94 and 95. The - ¢ v. signal cuts off transistor 90, greatly increasing the current through transistor 91 and generating a positive blanking pulse at its emitter.
Patent GB-1369391-A (GB)
Title: Machine for welding discoidal workpieces by charged particle  beam welding
IPC: B23K15/04
Filed: 1973-05-02
Abstract: 1369391 Welding by fusion LEYBOLDHERAEUS-VERWALTUNG GmbH 2 May 1973 [28 June 1972] 20745/73 Heading B3R [Also in Division H1] An electron beam welding apparatus for welding discoidal objects 11, 12 along a circular path, comprises means for producing a beam 4 of electrons and a vacuum chamber 6 which includes two opposing wall members 13 and 14 which are movable between loading and working positions, shown on the left and right of the figure, each wall member having a work holding device 15 which can be rotated by a motor 18, the two axes of rotation being at an angle of 120 to 180 degrees and symmetrically disposed about the axis of the beam 4. Deflection means 3 directs the electron beam to a selected one of the workpieces. The wall members 13, 14 are moved by hydraulic rams 21, 22, 25.
Patent GB-651168-A (GB)
Title: Quick adjustable fastenings of tubular elements forming luggage-carriers for motor-cars or the like vehicles
IPC: B60R9/058
Filed: 1948-08-06
Abstract: 651,168. Band clips. ESTABLISSEMENTS AGOSTINI & CO. Aug. 6. 1948, No. 20807. Convention date, Aug. 9, 1947. [Class 441 [Also in Group XXXII] For adjustably securing a bar, e.g. forming part of a luggage carrier, to a vertical supporting rod, a band clip a, Fig. 1, adapted to surround the bar d has apertured arms a<1> clamped between nuts c screwed on the supporting rod b so that the position of the clip on the rod may readily be adjusted. In another form, Fig. 3, the band clip is tightened by a nut j on a transverse stud formed with an apertured boss g at one end passing through an opening in the clip arm f<2>. The rod h is clamped on tightening the nut j against the arm f by the pressure of the other arm f<2> of the band clip f. This may be formed with radial notches to increase the frictional grip. The rods b, h are mounted on suction discs e, i.
Patent GB-869813-A (GB)
Title: Electric-cable anchoring arrangements
Inventor: PARKER ALAN CLIFTON
IPC: H01R13/595
Filed: 1957-07-02
Abstract: 869,813. Mechanical couplings for cable covering; earth continuity couplings. COMMUNICATIONS PATENTS Ltd. July 2, 1957, No. 20818/57. Class 38 (1). A cable is anchored to a terminal board by removing a segmental portion of the outer insulating sheath 8 to expose a part of the screen and provide a hole 9, a metal strap 11 being located in said hole and bolted at 12 to the board to serve both for anchoring and earthing the cable.
Patent GB-662122-A (GB)
Title: Improvements in froth flotation processes and frothing agents for use therein
IPC: B03D1/008
Filed: 1949-08-10
Abstract: Tetra-propoxy-ethanes are prepared by reacting glyoxal with the required alcohol, e.g. n-propanol reacted with glyoxal and distilled under vacuum gives a crude acetal which on fractional distillation in vacuo yields pure 1,1,2,2-tetra-normal-propoxy-ethane.ALSO:In the froth flotation of minerals 1.1.2.2. tetra-propoxy ethane or 1.1.2.2. tetra-isopropoxy ethane is used as the frothing agent.  The reagent is stated to be particularly suitable for the separation of sulphide ores, e.g. copper sulphide ores, and may be used with ethyl xanthate as the collecting agent.
Patent GB-238889-A (GB)
Title: Process for the production of active carbon
IPC: C01B31/12
Filed: 1925-08-20
Abstract: 238,889. Metallbank und Metallurgische Ges., Akt.-Ges. Aug. 20, 1924, [Convention date]. Charcoal. - Active carbon of high mechanical resistanoe is obtained by carbonizing cocoa-nut, walnut and similar shells or hard-woods of the same order of hardness after impregnation with zinc chloride.
Patent GB-1279062-A (GB)
Title: Improvements in or relating to driving means for tapered bodies of revolution
IPC: G01N27/90
Filed: 1971-04-19
Abstract: 1279062 Friction gearing SKF KUGELLAGERFABRIKEN GmbH 19 April 1971 [3 Feb 1970] 20918/71 Heading F2Q A driving arrangement for a tapered roller 1, such as a bearing roller being tested for surface defects, consists of a friction wheel 2 and two supporting tapered rollers 3, 4 mounted opposite the drive-wheel and having a common apex with the driven roller 1. The rollers 3, 4 may have a central recessed portion as shown, or be of solid frusto-conical form. The roller 1 is held in the desired axial position by an end stop 5.
Patent GB-865971-A (GB)
Title: Pressure sensitive adhesive tape
IPC: C09J7/50
Filed: 1957-07-02
Abstract: 865,971. Pressure-sensitive adhesive tape. MINNESOTA MINING & MANUFACTURING CO. July 2, 1957 [July 2, 1956], No. 20941/57. Class 140. A pressure-sensitive adhesive tape comprises a hydrophilic film backing primed with the dried deposition product of an aqueous emulsion of rubber latex and hydrophilic colloidal agglutinant comprising in at least major part a water-dispersible hydrophilic polyacrylamide, firmly united to a compatible water-insoluble rubbery case pressure-sensitive adhesive coating. The agglutinant may comprise a minor proportion of casein which may be tanned in situ with formaldehyde and a major proportion of waterdispersible hydrophilic polyacrylamide. Specified film backings are of regenerated cellulose " Cellophane " (Registered Trade Mark), hydroxy ethyl, and methyl cellulose, cellulose acetate, which have been treated to provide a hydrophilic surface, polyvinyl alcohol and metals such as aluminium. The polyacrylamide may be modified e.g. by methylolation. The agglutinant may be present in the range of 25 to 100 parts by weight per 100 parts by weight of rubber solids. A fungicide may be included in the primer coating. The adhesive may be compounded of a butadiene-styrene and/or natural rubber, and a tackifying resin.
Patent GB-669869-A (GB)
Title: Improvements relating to electric control systems
Inventor: ILLINGWORTH BRIAN GARFIELD
IPC: H02P9/24
Filed: 1949-08-12
Abstract: 669,869. Automatic voltage control systems. ENGLISH ELECTRIC CO., Ltd. Aug. 11, 1950 [Aug. 12, 1949], No. 21010/49. Class 38 (iv). In a system for maintaining the voltage of a D.C. generator 1 substantially constant within a given range of load or speed of the kind wherein at the desired voltage a vibrating relay contact 9 floats between two contacts 10, 11 and upon variation of the voltage the contacts switch in resistors 18, 19 to control the excitation of the generator field 1a and thus restore the voltage, the contact 9 is connected via a resistor 20 to a potential-dividing circuit including resistors 16, 17 and an operating coil 13 of the vibrating relay. At the desired voltage one current flows in resistor 20, but depending on whether the voltage rises or falls, current passes through the resistor in one direction or the other and provides for increased changes of current in the operating coil of the relay. To facilitate similar operating conditions for the relay irrespective of different speed ranges of the generator compensating resistors 3 ... 6 are switched into the field circuit by centrifugally-operated switches 21, 22. The vibrating relay may control resistance switching through the intermediary of mercury switches.
Patent GB-316002-A (GB)
Title: Improvements in or relating to safety razors
IPC: B26B21/52
Filed: 1928-07-20
Abstract: 316,002. Millington, D. July 20, 1928. Razors, safety.-A safety razor has the handle formed in two parts a, b pivoted together so as to be rigidly securable together by an axial screw h, Fig. 4, or to be left free, Fig. 2, for stropping the blade d. The curved guard plate e used for shaving is secured by a removable bolt f and nut g to the curved plate c secured to the part band is replaceable by a shorter plate j which holds the blade in flat condition with its ends projecting and preferably is curved on its underside to rock on the strip i. The handle part b is offset to allow passage of the strop, and for the same purpose the nut g and screw f are so arranged that the nut lies above the plate c when the plate j is in use. The screw h is arranged within the handle part a and engages the flat end of the part b to lock the two parts together. According to the Provisional Specification, the blade may be secured in position for stropping by clips or by members hinged to the plate c. Further, a razor is described in which a cross-bar is pivoted upon lugs at the ends of the plate c and is secured to receive the handle, which, for shaving, bears on the underside of the guard-plate. For stropping, the handle is unscrewed, so allowing the guardplate to fall away from the blade, which is held in flat condition by a U-shaped member fitting into recesses in the sides of the lugs on the plate c. A strop is then passed between the blade and the guard-plate, the unscrewing of the handle permitting the plate c, the blade, and the U- shaped member to oscillate thereon.
Patent GB-517000-A (GB)
Title: Improvements relating to electromagnetic relays
IPC: H01H51/22
Filed: 1938-07-15
Abstract: 517,000. Electromagnetic relays. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd. July 15, 1938, No. 21111. Convention date, March 5, 1938. [Class 38 (v)] A polarized relay, responsive to current in one direction only. comprises poles 1, 2 connected by a core 3 carrying a winding 4, an armature 5 pivoted at 6, and a permanent magnet 9 arranged as shown. Gravity and the magnet 9 normally retain the armature in the position shown but current through the winding 4 in the right direction will oppose and over come the flux due to the permanent magnet and cause the armature to be attracted and contacts 7, 8 operated. The relay may be used for checking the correct operation of a polar relay which normally maintains the polarity of a circuit by effecting a change of connections every time the polarity of the supply is reversed.
Patent GB-187744-A (GB)
Title: Improvements in piston packings
IPC: F16J9/20
Filed: 1921-08-09
Abstract: 187,744. Haddan, A. J. H., (Morris, A. D.). Aug. 9, 1921. Piston packing.- Split rings 22 with eccentric inner and outer peripheries are contained in recesses in undivided rings 16 of L-section, whicl are mounted on a carrier ring 15 of T. section. The rings 16 are pressed axially by springs 21. The joint of each ring 22 is covered by a plate 26, let into recesses in the ends of the ring and riveted to one end. The joint 30 between the cover piece and the ring is curved to a radius equal to the diameter of the ring.
Patent GB-1532107-A (GB)
Title: Electromagnetic contactors
IPC: H01H47/32
Filed: 1977-05-19
Abstract: 1532107 Control of D.C. motors TOW MOTOR CORP 19 May 1977 21158/77 Heading H2J [Also in Division H3] To prevent cyclic opening and closing of the contacts 3, 4 of a contactor 1, due to the reduced voltage of a battery 6 combined with the heavy load (e.g. starting current) taken by a motor 7 controlled by the contactor, whose coil 2 is supplied from the battery through a switch 9, a control circuit comprising members 10-18 is provided whereby a typical contactor-closing operation is as follows:- (1) Switch 10 is moved to position 12 to cause charging of capacitors 14, 18. (2) Switch 10 is moved to position 11 to complete a circuit through coil 2 and thyristor 13, which is fired by the capacitor 14 to cause closure of contacts 3, 4. (3) This contact closure changes the voltage polarities on the plates of capacitor 18 to turn off the thyristor 13, but the coil 2 remains energized through diode 17 and contacts 3, 4. Capacitor 14 has meanwhile discharged through members 13, 15, 16.  If the battery voltage is subsequently reduced by the motor current so that the contactor drops out, the opening of contacts 3, 4 de-energizes the coil 2 and reclosure can only be effected by moving switch 10 back to position 12 and then to position 11, whereby the above closing sequence is repeated.
Patent GB-921690-A (GB)
Title: Improvements in or relating to electric storage batteries
IPC: H01M4/64
Filed: 1961-06-12
Abstract: 921,690. Battery plates. TUDOR. A.B. June 12, 1961 [Aug. 19, 1960], No. 21163/61. Drawings to Specification. Class 53. A lead or lead alloy grid for a plate having a frame, vertical bars and transverse bars arranged alternately on opposed sides of the vertical bars, has additional bars inserted after casting, they being of a metal (e.g. aluminium) having a higher conductivity than lead. The bars may be leadplated before insertion and the assembled grid may be lead-plated after insertion.
Patent GB-599750-A (GB)
Title: Improvements in apparatus for measuring brightness
IPC: G01J1/42
Filed: 1945-08-20
Abstract: 599,750. Light measuring. GENERAL ELECTRIC CO., Ltd., and THOMAS, E. R. Aug. 20, 1945, No. 21217. [Class 40 (iii)] In a system for giving a trace representing the relative or absolute brightness of various parts of a scene on a cathode-ray tube, the scene is focused on a rotating apertured dissecting disc D, which scans a horizontal strip of the scene. Behind the disc is a photo-cell PE, the output of which is applied through amplifier A, to one set of deflecting plates of a cathoderay tube T, the other plates of which are fed from a time base G synchronized by impulses produced in the coils mounted on magnet E when bolt B on disc D passes between the magnet poles. An optical image of the scene is obtained on screen V for comparison with the trace by means of lens C' and prisms P<1> and P, the latter being manually moved in front of the object lens by means of a flexible cable ; alternatively, a fixed light splitting device may be used. For calibration, the cell may be illuminated by a standard lamp L. A filter F may be inserted to obtain a desired colour response.
Patent GB-1207583-A (GB)
Title: Processing of photographic silver halide
Inventor: SYKES DONALD J
IPC: G03C5/38
Filed: 1968-05-03
Abstract: 1,207,583. Tetramethylammonium sulphites. PHILIP A. HUNT CHEMICAL CORP. 3 May, 1968, No. 21221/68. Heading C2C. [Also in Division G2] Tetramethyl ammonium pyrosulphite is made by bubbling gaseous SO 2  through tetramethyl ammonium hydroxide in methanol and evaporating the solvent. Tetramethyl ammonium bisulphite is obtained by dissolving the pyrosulphite in water. Tetramethyl ammonium sulphite is obtained by dissolving the bisulphite in aqueous alkali.
Patent GB-788386-A (GB)
Title: Improvements in and relating to resistors for large currents
IPC: H01C3/10
Filed: 1956-07-09
Abstract: 788,386. Ohmic resistors. PERK, A. VAN DER. July 9, 1956, No. 21247/56. Class 37. A resistor for large currents comprises a strip of resistance material of zig-zag shape clamped between corrugated pieces of insulant so that the edges of the strip lie in the valleys of the corrugations, which are shallow so as not to touch the sides of the strip. In this way the cooling of the clamped section is improved. The Figure shows the resistance strip 1, the insulation 4, the corrugations in which are formed by the metal strip 5, with packing and retaining pieces 6 and 7. Several resistors may be clamped together using spacers 10, and clamps 8, held by bolts 2. Specifications 252,496 and 274,560, [both in Class 37], are referred to.
Patent GB-798752-A (GB)
Title: Improvements in reinforced concrete piles
Inventor: NG WAH HING
IPC: E02D5/52
Filed: 1955-07-22
Abstract: 798,752. Piles. SIME, DARBY & CO., Ltd. July 23, 1956 [July 22, 1955], No. 21292/55. Class 68(2) In a reinforced concrete pile, units, as 1 and 2, have spigot and socket connections, comprising metal sleeves 3 and 5 respectively, locked by pins, spaced apart both longitudinally and radially, and extending through holes 7 in the sleeves and the surrounding concrete. The sleeves 3 and 5 are anchored, preferably by welding, to reinforcements 4 and 6 respectively. To assemble the pile, grout is poured into the socket and the spigot inserted; excess grout is forced out through the holes 7, in particular the lowest one which connects with escape holes 8. The pins are then inserted and grouted in position. Specifications 521,682 and 521,683 are referred to.
Patent GB-1479424-A (GB)
Title: Flame resistant polyamide compositions
IPC: C08L77/00
Filed: 1976-05-24
Abstract: 1479424 Preparing phosphinylphosphinic acids and esters thereof HOECHST AG 24 May 1976 [24 May 1975] 21407/76 Heading C2P [Also in Division C3]  A phosphinylphosphinic acid of the formula wherein R is alkyl or cycloalkyl having up to 16 carbon atoms or an aryl or aralkyl radical having from 6 to 16 carbon atoms, R 1  is alkylene or arylene and n is 1, 2 or 3, and which is used as a flame-proofing agent for polyamide compositions, is obtained by the Arbuzov reaction from compounds of the formulµ (R) 3-n PO(R 1 - Hal) n  in which Hal is a halogen atom, e.g. Cl or Br, and R-P(-O-C m H 2m+1 ) 2  in which m is an integer from 1 to 5 and subsequent saponification of the resulting esters to yield the free acids. Examples are given for the production of various ester intermediates and their saponification to the free acids of the defined type.
Patent GB-427155-A (GB)
Title: Improvements in or relating to the precipitation of materials from colloidal solutions
IPC: C08B3/28
Filed: 1934-07-21
Abstract: Apparatus for the precipitation of a solid material, such as a cellulose derivative, synthetic resin, caoutchouc, bitumen and the like, from a colloidal solution thereof by forming the solution into drops and passing them into a precipitant, comprises a tank 1 having a number of perforations in its bottom with a pointed <PICT:0427155/IV/1> pin or rod extending through each perforation, and a second tank 2 for a precipitant arranged directly beneath the first.  The ratio of the diameter of the perforation to the diameter of the pin or rod preferably lies between 8 : 5 and 4 : 3. Conveniently the pins or rods are supported in the tank by means of a member 5 capable of being adjusted in height.  In a preferred application, a solution of cellulose acetate obtained on acetylation to acetone solubility is diluted by means of dilute acetic acid until the acetic acid content of the solution is about 58 per cent.  This is poured into the tank 1 and water is placed in the precipitation tank 2.  Fresh water is introduced at 9 while used precipitation liquor is withdrawn at 10 at such a rate as to keep the concentration of the liquid in the tank below about 38 per cent. Fig. 5 (not shown) shows diagrammatically a method of connecting up two apparatus in series; in this manner a spent acid liquor of about 33 per cent strength can be obtained.  The Specification as open to inspection under Sect. 91 refers also to a process in which a colloidal solution is formed into small separate drops by means of a tank having its bottom so shaped or constructed that a solution will pass from it in small drops of uniform size, these drops falling into a precipitant which is miscible or capable of forming a solution with the solvent, and which is placed in a tank placed below the first, so as to precipitate the solid material in the form of approximately spherical particles.  This subject-matter does not appear in the Specification as accepted.