baber/WOPTO huggingface dataset:
Patent GB-1508520-A (GB)
Title: Flash and camera device
IPC: H05B41/32
Filed: 1976-11-16
Abstract: 1508520 Flash operation WEST ELECTRIC CO Ltd 16 Nov 1976 [20 Nov 1975] 47773/76 Heading G2A A circuit for flash photography comprises an integration section 2 including a light-sensitive element 4, an integrating capacitor 6 and a switching circuit 8 which is reversed when the charge on capacitor 6 reaches a predetermined value. A circuit section 18 includes a stepping-up D.C. converter 13 which charges up a main capacitor 14, subsequently discharged across the flash tube 15 when triggered by a transformer 19. The power supply 11 to the converter 13 is switched on by a switch 12, which is ganged to a switch 3 in the integration circuit 2, switch 3 making contact with either a terminal a for flash photography, or a terminal b for daylight photography. For the latter, switch 3 engages terminal b and switch 12 is open. On releasing the shutter, a switch 10 closes, and the shutter opens. Capacitor 6 charges up, and switching circuit 8 reverses, actuating a magnet 9 which causes the shutter to close. For flash photography, switch 12 is closed and switch 3 contacts terminal a. The flash then operates as described above.
Patent GB-1085905-A (GB)
Title: Method of welding hot-rolled pieces
Inventor: KISLJUK FEDOR ISAAKOVICH
IPC: B23K11/00
Filed: 1964-11-25
Abstract: 1,085,905. Welding by pressure. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNO-TEKNOLOGICHESKY INSTITUTE UGOLNOGO MASHINOSTROENIJA. Nov. 25, 1964, No. 47894/64. Heading B3R. . In resistance welding hot rolled members, oxide film on the surfaces to be welded is removed or scratched by contacting each surface to be welded, with a corrugated tool which in co-operation with a supporting member, indents or scratches the surface to a depth substantially less than the thickness of the member. The members to be welded may be passed individually through one or more pairs of corrugated rollers or may be stamped using a corrugated punch or die. In an example sheets of hot-rolled mild steel are rolled between corrugated rollers and then spot welded.
Patent GB-1042220-A (GB)
Title: Novel polyamine-derived polyols and polyurethanes prepared therefrom
IPC: C08G18/54
Filed: 1964-11-25
Abstract: The invention comprises a polyol adduct of 1.9-20 equivalents ethylene, propylene or butylene-1,2-oxide with 1 amine equivalent of an aniline-formaldehyde acid condensation product containing 35-90 weight per cent methylenedianilines and balance tri- and polyamines.ALSO:Polyurethane foams are prepared by mixing under foaming conditions a polyisocyanate and a polyol comprising the adduct of 1.9-20 equivalents of ethylene, propylene or butylene-1,2-oxide with 1 amine equivalent of an aniline-formaldehyde acid condensation product (I) containing 35-90 wt. per cent methyldianilines and balance tri- and poly-amines.  The polyisocyanate is preferably that produced by phosgenation of I, but the use of toluene diisocyanate is also exemplified.  The polyol may also contain: the adduct of ethylene, propylene or butylene-1,2-oxide (2-5:1 equiv.) with aniline or (4-9:1 equiv.) with glycerol; dipropyleneglycol tetrol diphosphonate; tris-dipropyleneglycol phosphite or phosphonate; propylene oxide/dibutyl pyrophosphate 2:1 adduct or propylene oxide/methyl glucoside adduct. The foam composition may also comprise alkylene oxide/siloxane adduct, Et3N, Me2NCH2CH2CHMeNMe2 and CFCl3.
Patent GB-1442662-A (GB)
Title: Liquid spray devices
IPC: B05B3/04
Filed: 1973-10-16
Abstract: 1442662 Spray producers DIVERSEY Ltd 15 Oct 1974 [16 Oct 1973] 48122/73 Heading B2F  A liquid sprayer, particularly for washing tanks, comprises a downwardly directed outlet 21 in a pipe- 20 through which liquid flows, a spinner 22 having a central upstanding frustoconical boss spaced below said outlet, the spinner being mounted on a pin 25 extending therethrough, said pin having its upper tapered end 30 freely located in the outlet and its tapered lower end 27 engaged in a bearing support 24, the spinner thereby being rotatable on impingement of liquid from the outlet thereon about an extrapolation of the outlet axis, and said spinner having upstanding teeth 28 on its upper surface. The spinner is moulded from plastics e.g. polypropylene, the pivot pin being of stainless steel. A passage 29 extends through the boss to allow the passage of liquid to the underside of the spinner. Specification 1196746 is referred to.
Patent GB-1146128-A (GB)
Title: Salvageable multi-well offshore well protector platform
IPC: E02B17/00
Filed: 1967-10-24
Abstract: 1,146,128. Offshore platform; jetting arrangements. TEXACO DEVELOPMENT CORP. 24 Oct., 1967 [31 Oct., 1966], No. 48319/67. Headings E1F and E1H. A salvageable offshore well protector platform for drilling a plurality of underwater wells from the same location into the ocean bottom comprises a caisson 10 having a closed upper end and an open lower end, a jacket structure having a deck 24 and at least three parallel hollow legs 28 located on the outer surface of the caisson parallel to its vertical dimension and rigidly connected together, the legs 28 being also rapidly connected to the outer wall of the caisson by gusset plates 32 welded to the caisson 10 thereby transferring loads and movements From the jacket structure to the caisson. Controllable fluid passage mean's communicates between the interior of the caisson and its exterior for selectively releasing air from inside the caisson during its sinking into the ocean bottom and for pressurizing the interior of the caisson to provide an upward force to assist in its removal from the ocean bottom. A jetting ring 54 may be provided near the lower end inside the caisson for jetting the caisson into the ocean bottom.
Patent GB-1210970-A (GB)
Title: Extrusion head
IPC: B29C48/10
Filed: 1968-10-14
Abstract: 1,210,970. Extrusion head for melt extruding films and other sheet material. MINIGRIP EUROPE A/S. 14 Oct., 1968 [14 Oct., 1967], No. 48638/68. Headings B5A and B5B. An extrusion head for the continuous melt extrusion of plastics sheet material (such as flat and tubular films) provided with two longitudinal profiled ribs shaped for subsequent interengagement with one another is provided with an extrusion gap between two parts of the head for forming the sheet material or film and, at the extrusion face, a shaped slot for forming each of the profiled ribs during extrusion of the sheet or film, and a feed duct extending in one of the parts of the head between each shaped slot and a point in the extrusion gap upstream of the extrusion face, the inlet to the feed duct at the point where it opens into the extrusion gap being adapted to be reduced in cross-section. As shown in Fig. 2, an extrusion head for producing a tubular film comprises an outer annular part 22 in which an inner core 24 is inserted centrally. Parts 22 and 24 are spaced apart to form a main extrusion duct 26 of annular cross-section to which molten plastics material is supplied from an extruder via ducts 34 and 32, a perforated wall 28 and a duct 30. The upper duct portion forms an extrusion gap, which immediately upstream of the extrusion face is in the form of a cylindrical gap portion 29. Arranged at the upper end of the core 24 at angular spacing from one another are two feed ducts 40, 42 which open towards the end face of the core 24. These feed ducts communicate with the cylindrical portion 29 of the extrusion gap. The nozzle core is covered by a die plate 48 which, as shown in Fig. 3, comprises shaping slots 50 and 52 respectively for the shaping of the profiled ribs 12 and 14 of the tubular film 10 shown in Fig. 1. The slots are situated above the feed ducts 40 and 42 and thereby communicate with the cylindrical gap portion 29. Compressed air for the inflation of the tubular film issuing from the blowing head is introduced into the tubular film through the conduit 60 and the duct 58 extending through the core 24. As shown in Fig. 4, the feed ducts 40, 42 comprise an inlet portion 62 the diameter of which is substantially equal to the gap width (a) of the cylindrical gap portion 29 and is substantially smaller than the diameter of the outlet portion 64 of the feed duct. The inlet 68 of the inlet portions 62 of the feed ducts is adapted to be reduced in cross-section, and for this purpose the core 24 is formed at least in the region of the inlet portion of the feed ducts of a deformable material, e.g. tool steel, aluminium, copper or brass, so that, for example by means of a rounded drift, it is possible to upset the edge of the inlet portions of the feed ducts, as indicated at 70, and thus reduce the cross-section of the inlet 68 to the desired extent.
Patent GB-1365577-A (GB)
Title: Centrifugal pump
IPC: F28D7/02
Filed: 1972-10-23
Abstract: 1365577 Tubular heat exchangers WESTINGHOUSE ELECTRIC CORP 23 Oct 1972 [14 Dec 1971] 48685/72 Heading F4S [Also in Division F2] A portion of the liquid being circulated by a centrifugal pump from a pump inlet (13, Fig. 1) to a pump outlet (12), flows through ports (73, 74) in the pump impeller (17) to a chamber 75 disposed above the impeller and encircling the pump shaft 16. From the chamber 75 the liquid passes through the lower part of the shaft seal 68 and ports 71 to the inlet chamber 64 of a heat exchanger compartment 46 in which the liquid is cooled. The chamber 64 is defined by an end wall 58 of the compartment 46 and a plate 65 perforated to uniformly distribute the liquid over coolant coils 63 in the compartment 46. The cooled liquid leaves the compartment 46 via ports 72 of an outlet chamber 67 of generally similar construction to that of the chamber 64, and then flows through the upper part of the shaft seal 69 to the vicinity of the pump bearings which are thereby cooled. The heat exchanger tubes 63 are flat spiral coils separated by spacers 88, Fig. 6, and the ends of the coils terminate in inlet and outlet headers 82, 85 of semi-cylindrical cross-section. 78 denotes a coolant inlet to the header 82. A substantially static body of the liquid being pumped and serving as a heat barrier, is maintained in an annular chamber 45 encircling the heat exchange chamber 46. The chamber 45 which is in communication via a port 89 with the main stream of pumped liquid is subdivided by a plurality of sleeves 91 into layers in order to prevent thermal circulation of the liquid in said barrier.
Patent GB-1451697-A (GB)
Title: Process for producing 1,3-diamino-2,2-dimethylpropane
IPC: C07C/
Filed: 1974-11-15
Abstract: 1451697 1,3-Diamino-2,2-dimethylpropane RUHRCHEMIE AG 15 Nov 1974 [23 Nov 1973] 49562/74 Heading C2C 1,3-Diamino-2,2-dimethylpropane is made by contacting neopentyl glycol, ammonia and hydrogen at a temperature of 220-300‹ C. and a pressure of at least 10 atmospheres with a nickel-containing catalyst. The catalyst may also contain chromium (III) oxide and may be supported on kieselguhr. The latter may contain alumina and magnesia in addition to silica.
Patent GB-1126021-A (GB)
Title: Improvements in photographic copying machines
IPC: G03B27/20
Filed: 1964-12-07
Abstract: 1,126,021. Photo-copying apparatus. PICTOGRAPH Ltd. and P.G.M. BUTTERFIELD. Dec.7, 1965 [Dec. 7, 1964], No.49603/64. Heading G2A. A photo-copying machine unit comprises a suction chamber 2 mounted on a pedestal 3 containing a suction pump and motor 12. The top surface 14 of the chamber consists of a perforated sheet of metal or a synthetic plastics material which is supported on an internal lattice structure 15. The unit further comprises a hinged cover 6 carrying lamps 30 for exposing copy material. An original and a copy sheet are placed on the surface 14 and a flexible transparent sheet 18 Fig. 3 (not shown), attached to one edge of the surface, is placed over them. The cover is lowered, a flexible skirt 10 thereon sealing the gap between the cover and the surface 14. Two or more units may be bolted together so that an original having the length of the combined unit may be exposed completely in a single operation.
Patent GB-1505159-A (GB)
Title: Laminate comprising a mineral fibre web laminated to a metal foil
IPC: C04B28/26
Filed: 1975-12-03
Abstract: The laminated fibre web is not combustible and is flexible. In order to attain this object, the adhesive bonding the metal foil to the mineral fibre web has the following composition:     60 to 95% water glass   4 to 16% clay mineral substances 1 to 5% oxides or carbonates of alkaline earth metals or zinc, or oxides or hydroxides of aluminium or barium sulphate   0 to 5% pigments 0 to 5% phosphates or borates of monovalent, divalent or trivalent metals in dissolved or finely distributed form. Water, if required.
Patent GB-1075093-A (GB)
Title: Waveform generator circuits for television receivers
IPC: H03K4/60
Filed: 1963-12-16
Abstract: 1,075,093. Transistor sawtooth generators. RADIO CORPORATION OF AMERICA. Dec. 16, 1963 [Dec. 19, 1962], No. 49646/63. Heading H3T. In a sawtooth current generator, breakdown of the base/emitter junction of the output transistor at the end of a sweep is prevented by use of a control pulse having an initial amplitude sufficiently high to render the output transistor non-conductive and having an amplitude lower than said initial amplitude during the remaining portion. Fig. 1 shows a line deflection circuit for a television receiver in which sawtooth current in the line coils HH are generated by repetitively rendering transistor 38 conductive and non-conductive by control pulses generated by a blocking oscillator comprising transistor 26. The frequency of the oscillator is governed by time-constant circuit 27 and synchronized by pulses on line 22. Circuit 29 ensures that when transistor 26 becomes conductive the waveform across the secondary winding 32 has an initial amplitude sufficiently great to sweep out the charged carriers from the base of transistor 38 and so cut off the transistor, but as capacitor 29 becomes charged, the amplitude becomes reduced so as to prevent base/emitter junction breakdown of transistor 38 in the presence of the flyback pulse but remains sufficiently high to maintain the transistor non-conductive during the flyback period. In Fig. 3 the frequency of the blocking oscillator comprising transistor 51 is governed by the resonant circuit comprising capacitors 56, 57 inductor 58. At the end of each sweep, the pulse produced by the blocking oscillator 51 allows inductor 63 to ring, giving the control voltage for transistor 52 of the form described above. In Fig. 5, the line multivibrator or blocking oscillator 121 is coupled via a transformer 123 to an intermediate transistor 128 having a capacitor 138 in the emitter circuit which operates in a similar manner to components 29 of Fig. 1. The shaped pulses thus formed are coupled by a transformer 133 to the line output stage 142 having the line deflection coils connected to terminals HH in the emitter circuit and a damping diode 145.
Patent GB-1026946-A (GB)
Title: Process for extracting oxides of nitrogen
IPC: C01B21/26
Filed: 1964-12-09
Abstract: A process for extracting oxides of nitrogen from waste gases, said oxides having an average degree of oxidation corresponding at least to N2O3, by scrubbing with an aqueous suspension of Ca (OH)2 in an amount to form a solution containing not more than 65 gm./litre of nitrogen present as (NO2)- and (NO3)-, then adding at least 2, e.g. 2.2-2.5, mole H2SO4 for every 3 moles of Ca (NO2)2 whereby NO is evolved. The scrubbing should be performed below 55 DEG  C., e.g. 20-30 DEG  C.  Alternatively H2SO4 may be added in a molar ratio to Ca(NO2)2 of 1: 1 whereby a solution of about 10 to 20% of HNO3 is produced in addition to NO, in which case the preferred nitrile solution contains 50-65 gm./litre of nitrogen present as (NO2)- and (NO3)-.  The absorption may be carried out in several stages, the scrubbing solution and gases flowing in countercurrent.  The solution discharged from the first scrubber preferably contains between 3 and 5 gm. of CaO per litre. The scrubbing apparatus may be columns packed with ceramic rings or grids or bubble tray columns, or spray towers. In the acidification step air may be bubbled in to facilitate release of NO.
Patent GB-1490010-A (GB)
Title: Apparatus for packaging coins
IPC: B65B11/04
Filed: 1975-12-09
Abstract: 1490010 Packaging coins W F WESTERMANN 9 Dec 1975 [18 Dec 1974] 50383/75 Heading B8C Packaging means for coins comprises means for providing a stack of coins in a removable sleeve 1 selected in accordance with the coin diameter, rollers 2-4, at least one of which is driven, for penetrating slots (not shown) in the sleeve 1 to engage and rotate the stack, means (68)-(72), Fig. 8 (not shown), for supplying wrapping paper around the stack through a further or one of the slots, and means 48, 49 for folding over portions of the paper overlapping the ends of the stack. The rollers 2-4 are supported by pairs of pivotable arms 8a, (8b), 9a, (9b), 10a, 10b, Figs. 1 (not shown), 2 and 3, and two rollers 2, 3 may have respective belt drives 16a, 16b, 17a, 17b from a motor 13. The arms, e.g. 10a, 10b, are pivotable on fixed posts, e.g. 10c, and are biased by spring 25-27 to move the rollers 2-4 inwardly. Each sleeve 1 has a collar 44 for engaging the arms 8a, 9a 10a to define the operative position of the rollers 2-4, and a disc 18 is pivotable manually or by a solenoid 29 to move the rollers 2-4 outwardly for sleeve interchange by means of slots 19-21 engaging guide pins 8e-10e of the arms 8a &c In operation, coins are counted or fed as a group into the sleeve 1 to rest on a stop (40), Fig. 5 (not shown), at its lower end. Paper from a reel (68) is fed by rollers (70), (71) through a guide track (69) and past a cutter (72) to surround the coin stack. Folding hooks 48, 49, drawn together by a spring 50 under the control of a rotary cam disc 51 and lever 55, are then engaged with the free edges of the paper to crimp the ends of the wrapper surrounding the stack. The stop (40) may then be retracted on a parallelogram linkage (41) to allow the wrapped coins (39) to reach a discharge outlet (39), the rollers 2-4 being retracted by actuation of the solenoid 29 to free the package.
Patent GB-503930-A (GB)
IPC: E03C1/04
Abstract: 503,930. Bath &c. fittings. COCKBURN & CO., Ltd., M., and HUNTER, R. L. Oct. 15, 1937, No. 28169. [Class 26] A plate 4, secured to a bath &c. by two snags 3 and a stud 6, carries the waste control handle 18, an integral water-supply nozzle 8, and has overflow openings 24 adjacent to an integral coupling 25 to which the overflow pipe 26 is connected. The taps controlling the water supply are mounted independently of the plate. Specification 503,938 is referred to.
Patent GB-1536129-A (GB)
Title: Device and method for detaching a sheet from a surface
IPC: G03G15/14
Filed: 1975-12-09
Abstract: 1536129 Stripping sheets HOECHST AG 9 Dec 1975 [16 Jan 1975] 50422/75 Heading B8R A nozzle assembly, comprising air blast nozzles 24, which is used to strip sheets from conveyers by producing partial vacuum using the Bernoulli principle is provided with passage means in the vicinity of each nozzle to permit the escape of air when that nozzle is covered by a sheet so preventing a pressure increase between sheet and nozzle which would tend to push the sheet away from the nozzle. The passage means may be provided by plastic filaments 34, Fig. 4, which space the operative face 23 of the assembly from an attracted sheet. The filaments may be replaced by ridges moulded on the face 23. Alternatively the face 23 may bear grooves radiating from each nozzle (Fig. 5b, not shown). In a further form the body of the assembly may comprise bores leading from each nozzle to the side edges thereof.
Patent GB-1120366-A (GB)
Title: Improved zirconium base alloys
IPC: C22C16/00
Filed: 1966-11-11
Abstract: An alloy has the following percentage composition:-Sn 0.1 - 2.5 Fe and/or Ni and/or Cr 0.1 - 2 Mo 0.03 - 0.15 Impurities less than 0.5 Zr the remainder.
Patent GB-1524540-A (GB)
Title: Indicator lamp circuit having feedback protection
IPC: G01R31/44
Filed: 1975-12-11
Abstract: 1524540 Lamp testing circuit WESTINGHOUSE ELECTRIC CORP 11 Dec 1975 [16 Dec 1974] 50811/75 Heading G1U An indicator lamp circuit in which lamps 10, Fig. 1 are normally controlled individually by the presence or absence of an A.C. signalling voltage between an associated lead 22, 23, 24, and a common return lead 20, and in which all the lamps can be energized simultaneously for test purposes by depression of a test key 34, to apply an A.C. voltage between a test lead 30 and the common lead 20, the signalling leads 22, 23, 24, and the test lead 30 being isolated from each other by diodes 32, 26, is provided with additional diodes 44 (normally redundant) and fuses 42, 40, whereby if any one of the isolating diodes becomes short-circuited, for example diode 32, and if an A.C. voltage is subsequently applied to the short-circuited diode, for example by depressing the test key, then upon the half-cycle of the supply voltage that is normally blocked by the faulty diode an excessive current will flow through the associated diode 44, bypassing the lamp-transformer, and cause one of the fuses to rupture. In a modification Fig. 2 (not shown), Zener diodes are inserted in series with diodes 44 to limit the current therethrough.
Patent GB-1072639-A (GB)
Title: Process for preparing flexible cellular polyurethanes
IPC: C08G18/48
Filed: 1965-11-30
Abstract: Flexible cellular polyurethanes are made by admixing (a) an organic diisocyanate, (b) a polyether polyol, (c) water, (d) an organotin catalyst in an amount of 1200-3800 p.p.m. by weight of said polyether polyol and (e) a lead salt of an organic carboxylic acid in an amount providing 10-175 p.p.m. of lead by weight of said polyether polyol, with the proviso that when more than 2300 parts by weight of said organotin compound or less than 70 parts by weight of said lead salt of an organic acid, per million parts by weight of said polyether polyol is used, said polyether polyol is an ethylene oxide capped polyether polyol.  In Example (1) to a solution of lead 2-ethylhexoate in 100 parts of glycerol initiated polyoxypropylene trial of average M.W. 3000 containing 130 p.p.m. of lead were added: water, triethylene diamine, siloxane oxyalkylene copolymer and 0.20 parts of stannous octoate, and to the resulting mixture tolylene diisocyanate was added and the mass allowed to foam.  Reference has been directed by the Comptroller to Specification 901,056.
Patent GB-1240108-A (GB)
Title: Improvements relating to apparatus for dispensing food to cattle
Inventor: ANDERSON JOHN KERR
IPC: A01K5/02
Filed: 1967-11-09
Abstract: 1,240,108. Feeding animals. GASCOIGNES (RESEARCH & DEVELOPMENT) Ltd. 10 Feb., 1969 [9 Nov., 1967], No. 51057/67. Heading A1M. [Also in Division H3]  Apparatus for feeding a cow during milking consists of a milk collecting vessel 2 suspended from a control unit 4 sensitive to the amount of milk delivered which unit, on each successive predetermined increment of the amount of milk delivered to the vessel 2, sends a signal to an electrical circuit which starts a motor 9 which operates a screw conveyer 13 so that a predetermined amount of feed is delivered to the feed trough 7. The control unit, Fig. 4, supports the milk vessel at the eye 3 which moves downwardly due to the increased amount of milk in the vessel and rotates, through a rack and pinion 23, 24, an opaque plate 22 having a plurality of holes 25. A light-source 27 and a photoelectric cell 28 are disposed on opposite sides of the plate 22 such that when due to rotation of the plate a hole 25 comes in line with the light 27 and the cell 28, the cell activates and sends electrical signal through an electric circuit (Fig. 5, not shown), to start the motor 9. In other alternatives: the volume or flow of the milk instead of its weight, a rotating drum or a linearly moving plate instead of the rotating plate, and a row of contact studs instead of the photo-cell and the light may be used. The food conveyer may also  be of any other suitable design; and instead of one food station 5, there may be two of them (the other being shown as 51 in Fig. 1).