baber/WOPTO huggingface dataset:
Patent GB-1529301-A (GB)
Title: Trawl bobbins
IPC: A01K73/053
Filed: 1977-05-11
Abstract: 1529301 Trawl bobbins M L SHEPHERD 11 May 1977 54198/73 Heading A1A A trawl bobbin having a wheel 2 is strung on a ground rope 16 such that the wheel rotates about an axis perpendicular to the direction of towing of the net. As shown the bobbin is supported on axle tube 6 which also provides a guide for the rope. The guide provides for two different positions of the rope relative to the direction of movement of the bobbin which is kept in its rolling position by a tail fin 10.
Patent GB-1344120-A (GB)
Title: Manufacture of wheels
IPC: B21D53/26
Filed: 1971-11-24
Abstract: 1344120 Welding by fusion GIANETTI SpA 24 Nov 1971 [26 Jan 1971] 54549/71 Heading B3R [Also in Division B7] In circumferential welding (e.g. submerged arc) a vehicle wheel channel rim 36 to a disc 54 (or ring attached to spokes), the rim and disc are axially fluid-pressure clamped together with a peripheral portion 55 of the disc engaging the inner surface of a tyre bead support zone 40 of the rim, and the clamping pressure is such that the rim is made to conform to the disc. The clamping apparatus comprises a base 12 on which are secured an interchangeable rim locating an abutment ring 34 and a cylinder 18, and an interchangeable disc locating an abutment plate 52 secured to the cylinder. The cylinder houses a piston 22 a rod 26 of which has an end enlargement 27. A valve 76 is provided to selectively direct fluid pressure (e.g. air) to opposite sides of the piston. In operation, the rim 36 is positioned on the ring 34, the disc 54 is positioned on the plate 52 with its wheel fixing holes 56 located on pins 58, a clamp plate 62 is placed over the rod end enlargment 27, and a C-shaped clamp member 64 is swung into position between the enlargement 27 and the plate 62. Fluid pressure is then directed to rightwardly move the piston, and hence the plate 62, to press the disc into abutment with the plate 52, the rim and disc being so dimensioned that when this abutment is established the peripheral portion 55 of the disc is pressed against the rim zone 40 such that the rim is made to conform to the disc. In the event of insufficient disc rigidity, the plate 62 may be of increased diameter such that it may bear on the outer part of the disc. The welding may be effected from one side only. Figures 2, 3 (not shown) relate to different forms of rim, disc and spoke ring.
Patent GB-1447389-A (GB)
Title: Primer valve
IPC: F02M1/16
Filed: 1973-11-26
Abstract: 1447389 Valves OUTBOARD MARINE CORP 26 Nov 1973 54712/73 Heading F2V [Also in Division F1] A valve for controlling the flow of fuel from a tank 18 to an I.C. engine 24 comprises a housing of three body parts 30, 32, 34 accommodating a first diaphragm 46 which is co-operable with a seat 44 to control flow between an inlet 16 and an outlet 20 and which is subject to the force of a spring 62 and the pressure in chamber 64 on one side and the pressure of fuel upstream of the seat 44 on the other side and a second diaphragm 72 which is actuable as a pump to increase the pressure of the fuel upstream of seat 44. When chamber 64 is connected to atmosphere the valve can be opened without the aid of the second diaphragm. If the chamber 64 is connected to the pressurized fuel tank 18, the valve cannot be opened without actuation of the second diaphragm. Upstream pressure is increased by movement of the second diaphragm against a spring 82 and by closure of a check valve 58. The second diaphragm may be actuated mechanically or by pressurized fluid.
Patent GB-1526399-A (GB)
Title: Mine roof support
IPC: E21D23/00
Filed: 1974-12-18
Abstract: 1526399 Mine roof support DOWTY MINING EQUIPMENT Ltd 1 Dec 1975 [18 Dec 1974] 54780/74 Heading E1P A mine roof support has a shield 16 pivoted to the base 1 by means of a top link 12 and a bottom link 13, the top link being in the form of a shield and being of greater surface area than the bottom link. The top link is in the form of a hollow box, Fig. 4, which is as wide as the shield 16, and comprises a pair of bars 36, 37 to which are welded a pair of plates 38, 39, and the bars project from the edges of the plates, Fig. 2, to form pivotal lugs 42-45. The bottom link comprises a pair of parallel links 13 but may alternatively be a single link or may be joined at their upper parts. The shield 16 is pivoted to a canopy 29 which is supported by variable length struts 33, 34. The pivot 28 is constrained to move vertically by the arrangement of the links 12, 13.
Patent GB-1418004-A (GB)
Title: Dental opaquing compositions and method for their preparation and use
IPC: A61C13/00
Filed: 1972-11-29
Abstract: 1418004 Dental opaquing compositions DENTSPLY INTERNATIONAL Inc 29 Nov 1972 [16 Dec 1971] 55206/72 Heading C3P Compositions suitable for opaquing a metal surface of a dental crown and bridge prosthesis contain, as sole polymeric component, a copolymer of 20-60 parts by weight of acrylonitrile and 40-80 parts by weight of methyl methacrylate and also include a pigment in an amount of from 1-45 parts by weight, based on 100 parts by weight of copolymer plus pigment. The copolymer is suitably dissolved in a solvent such as a nitroparaffin or a halogenated hydrocarbon in proportions of 5-40 parts by weight copolymer and 35-90 parts by weight solvent. Suitable pigments include silica, titanium dioxide, zinc oxide, iron oxide, barium sulphate and mixtures thereof. The compositions may also include minor amounts of a carboxylic acid, e.g. methacrylic acid, and an adhesion promoting silane compound.
Patent GB-1214194-A (GB)
Title: Improvements relating to acid anthraquinone dyestuffs, their production and use
IPC: C09B1/34
Filed: 1968-11-21
Abstract: 1,214,194. Anthraquinone dyes. J. R. GEIGY A.G. 21 Nov., 1968 [22 Nov., 1967], No. 55253/68. Heading C4P. Novel dyes of formula (wherein Hal is Br or Cl; A is the radical of an optionally substituted diphenylalkane, diphenylcycloalkane, diphenyl ether or diphenyl thioether, which radical is bound by carbon atoms of the benzene rings to the nitrogen, to the S0 3 H group(s) and to the -CH 2 N(R)COY group); R is H or C 1-5  alkyl; Y is alkyl or an optionally substituted cycloalkyl or aryl group; and n is 1 or 2), or mixtures of such dyes, are prepared by reacting a 1-amino-2-halo-4- (-NHA<SP>1</SP>)-anthraquinone (wherein A<SP>1</SP> is a monovalent radical corresponding to A) in either order with n mol. of a sulphonating agent and one mol. of a compound of formula or reactive functional derivative thereof. The products may be used to dye or print fibrous polyamide material, and impart blue shades. An intermediate of formula is isolated in Example 2. 1 - Amino - 2 - bromo - 4 - (p - phenoxyanilino) - anthraquinone is prepared by reacting phenyl (p - aminophenyl) ether with 1 - amino- 2,4-dibromo-anthraquinone. Reference has been directed by the Comptroller to Specification 945,806.
Patent GB-1106430-A (GB)
Title: Improvements in or relating to coagulation of latex
Inventor: SMITH JOHN FREDERICK
IPC: C08C1/15
Filed: 1965-12-31
Abstract: Fresh rubber latex is coagulated by the use of phosphoric acid The latex may contain ammonia and sodium metabisulphite.
Patent GB-1447677-A (GB)
Title: Light source with high efficiency light collection means
IPC: F21V8/00
Filed: 1973-11-30
Abstract: 1447677 Lamps TINSLEY LABORATORIES Inc 30 Nov 1973 [5 March 1973] 55553/73 Heading F4R [Also in Division G2] A device for collecting light from a source 23 having a long light emitting region comprises an elongated light transmissive body 27 coaxial with the region and having an input end 29 and a smaller output end 31, a frusto-conical light transmissive member 37 which coaxially surrounds the region and directs light by internal reflection into the end 29 of the body 27, and a reflector 39 which redirects any light which escapes rearwardly from the member 37 back into the member. The body 27 is preferably made of quartz and is formed as a body of revolution by rotating a parabolic arc about an axis displaced from and tilted relative to the axis of the parabola. The member 37 is also made of quartz, and defines with the body 27 a disc-shaped cavity 43 and a chamber 45 through which coolant is circulated via conduits 19, 21. The coolant is preferably a mineral oil containing a red dye to filter out infra-red radiation. The reflector 39 is of stepped construction and may be made by securing together a stack of annular quartz or aluminium discs of increasing internal radii and aluminizing or polishing the surface. The source may be a conventional arc discharge tube.
Patent GB-1239940-A (GB)
Title: Belt flattening device
IPC: D21F1/36
Filed: 1968-11-26
Abstract: 1,239,940. Endless conveyers. AMF Inc. 26 Nov., 1968 [11 Dec., 1967], No. 56055/68. Heading B8A. A device for maintaining flat an endless conveyer belt, comprises a rectangular box 14 connected to a vacuum source and positioned beneath the belt 10, sealing strips 52 arranged along the upper side edges of the box in engagement with the underside of the belt and rollers 32, 34, 36, to support the belt on passage over the box. The outermost rollers 32, 36, are sealed at the ends against the sealing strips 52 and engage sealing rods 48 arranged parallel to the rollers in grooves 46 arranged below the rollers in the end walls of the box.
Patent GB-1254147-A (GB)
Title: Apparatus for use in a rugby football board game
Inventor: GREEN ROBERT JAMES
IPC: A63F3/00
Filed: 1969-11-19
Abstract: 1,254,147. Indoor games. R. J. GREEN. 11 June, 1970 [19 Nov., 1969], No. 56511/69. Heading A6H. Apparatus for playing a rugby football game comprises a board divided into at least two pitch areas 10 each area being marked out in three parallel side by side columns of spaces 13 bearing playing instructions and having across the ends of the columns, one or more other spaces 14 bearing playing instructions, a scrum-down area 16 being located in the centre of the board with two associated put-in areas 15 running from the scrum-down area to opposite sides of the board. A peg projects out of the centre of the area and a ball token is projected from the put-in area 15 to strike to rebound from the peg to land in a sector 17 of the scrum down area. Playing pieces in the form of rugby players are moved along each column. Chance cards are provided and the playing pieces are moved on the throw of a die.
Patent GB-1375617-A (GB)
IPC: G01D5/34
Filed: 1972-12-08
Abstract: 1375617 Photo-electric potentiometer SQUARE D CO 8 Dec 1972 [17 Dec 1971] 56648/72 Heading G1A A contactless variable impedance device comprises a member 78, having a pattern varying from transparent to opaque, movable between a light source and detector. The device of Figs. 2-6 is designed to provide a continuously variable impedance change of a photo-transistor 62 as member 78 carried by actuator 30 moves between it and an emissive diode 66. The diode has a light output including considerable infrared. The source and detector are mounted in opposite sides 48, 50, Fig. 4, of a cavity in a moulded member 32. The actuator 30, comprising two strip-like parts riveted together at 72, which act as stops, and having aperture 76, moves in slot 38 in the member 32. A printed circuit is screwed to the top of member 32 and provides terminals for source and detector. The member 78 has a central opaque area twice the width of the cross-section of the source beam and outer strips, of equal width to the source crosssection, of respectively 20, 40 and 60% transmission. The extreme outer strips are completely transparent. The pattern on member 76 may he formed photographically in varying half tone (dotted) patterns.  The device may form part of a master and speed control switch for an industrial lift truck. A cam, Fig. 1 (not shown), is rotatable in either direction to switch to forward or reverse truck movement. Further cam rotation after switching causes the actuator 30, via a link, to be moved to provide a variable speed control signal.
Patent GB-1343660-A (GB)
Title: Timepiece
IPC: G04G9/00
Filed: 1971-12-07
Abstract: 1343660 Electric watches SUWA SEIKOSHA K K 7 Dec 1971 [29 Dec 1970] 56766/71 Heading G3T In a battery powered electronic watch including a crystal controlled oscillator followed by a frequency divider and counters feeding timing data to a liquid crystal time display via a drive circuit Fig 4, while the oscillator, divider &c. which are composed of M.O.S.T. circuits, are energized continuously from the battery, a higher operating voltage for the liquid crystal is available on demand by closing a switch 7<SP>1</SP> Fig. 3 in a D.C./A.C./D.C. voltage step-up converter circuit. In the drive circuit Fig.4, each time a pulse is received at the base of a transistor 19 from the counter the output voltage of the converter circuit is applied to appropriate portions of the liquid crystal display 20, to indicate time. The converter circuit Fig.3 includes a pushpull transistor oscillator circuit (having a frequency of 500HZ-100KHZ) wherein a primary winding 11 on a toroidal ferrite core is connected to the collectors of transistors 8, 9 and the bases thereof are connected respectively to the ends of a detecting coil 12. The centre taps of winding 11 and coil 12 are joined via R13, C14. The resulting output voltage of a secondary winding 15 is full wave rectified and smoothed to provide say 20 volts from a battery voltage of 1.2.
Patent GB-1214839-A (GB)
Title: Improved synthetic fibrous materials having hydrophilic and antistatic properties and an improved method for producing the same
IPC: D06M15/595
Filed: 1967-12-19
Abstract: 1,214,839. Modifying polyamides. TEIJIN Ltd. 19 Dec., 1967 [20 Feb., 1967; 11 July, 1967], No.57664/67. Heading C3R. [Also in Division D1] A composition used in the treatment of synthetic fibrous materials comprises (a) a polyamide N-substituted by methylol or alkoxymethyl in which the amount of combined formaldehyde is 3-15% by weight, (b) a compound of the formula in which X is a phosphoric acid radical (i.e. Xis or silicic acid residue, i.e. X is and q is 0 or 1 and when q is 0, R is a residue of a compound having at least two groups selected from hydroxyl and primary or secondary amino, the residue being an aliphatic polyhydric alcohol residue, aliphatic hetero-cyclic polyhydric alcohol residue, a residue of one of these types in which one or more of the free hydroxyl groups is esterified with an aliphatic carboxylic acid, polyalkylene-polyamine residue or polyoxyalkylene-polyamine residue, l is 0 or 1, Z is oxygen or hydroxyl, n is 0 or 1, Y is hydrogen or methyl and m is the number of combined moles of alkylene oxide, m x p being 5-100 moles, with the proviso that when Z is OH, n and p are both 1 and l is 0, and when Z is -O-, l, p and n are all 1, and when q is 1, R is aliphatic alkyl of 1-18 carbon atoms, aliphatic alkoxy of 1-18 carbon atoms, aryl, alkyl-substituted aryl or aromatic alkoxy, l is 0, 1 or 2, Z is oxygen, n is 1, Y, m and m Î p have the meanings previously defined in the case when q is 0, and in the case where X is a phosphoric acid residue p = 3 - l and in the case where X is a silicic acid residue p = 4 - l, and (c) a catalyst which is an acid or acidforming substance, e.g. oxalic, maleic, citric, butyric, tartaric, boric, chloroacetic, malonic, or p-toluene sulphonic acid, or a volatile amine or ammonium salt thereof. The composition comprising (a), (b) and (c) may be applied to the fibrous material in the form of a watercontaining methanol solution or aqueous dispersion, and the impregnated fibres then squeezed, dried at 80-120 C. for several minutes and then heat-treated at 150-180 C. for from 30 seconds to 10 minutes to effect reaction on the material of (a) and (b) in the presence of (c).
Patent GB-1282378-A (GB)
Title: Bacterial controls and the preparation thereof
IPC: C12M1/26
Filed: 1970-12-04
Abstract: 1282378 Bacterial preparations and control specimens F HOFFMANN-LA ROCHE & CO AG 4 Dec 1970 [5 Dec 1969] 57728/70 Heading C6F Stable dry bacteriological control specimens have a generally disc-shaped configuration, comprise 10<SP>5</SP>-10<SP>8</SP> viable bacteria per disc suspended in nutrient gelatine and materials (specified) which stabilize the viability of the bacteria, and the discs are produced by vacuum desiccating discrete drops of the bacterial suspension on to a non-adhering surface. The discs are stored in small sterile screw-capped vials containing a desiccant e.g. silica gel, CaCl 2  or CaSO 4 . The preferred suspension medium contains 90-97% by weight nutrient gelatine, 0À005-0À015% diethylaminoethyl dextran (or dextran or dextran sulphate) and the remainder monosodium glutamate. The dextran and glutamate may, however, be replaced by glucose, sucrose, lactose, mannitol or polyvinylpyrrolidone. Other suspension media are comprised of 99.1- 99.5% of the nutrient gelatine and, as stabilizers, cysteine, thiourea, glutathione or monothioglycerol. In use, the discs may be added directly to the diagnostic medium whose biochemical properties are to be checked. Alternatively, the specimen micro-organisms may be re-cultivated prior to testing. According to an Example two discs, one with Staphylococcus aureus and the other with Staphylococcus epidermidis were placed in separate test tubes containing some of the rabbit plasma being used as a test medium in a coagulase test procedure. In three hours, the plasma clotted in the tube containing S. aureus while S. epidermidis gave a negative test, thereby confirming that the rabbit plasma was performing properly in the testing. The oxidase test of Pseudomonas aeruginosa and the raffinose test for Enterobacter cloacae are among the many-other tests and bacteria particularly mentioned.
Patent GB-1133892-A (GB)
Title: An hydraulic actuator
IPC: F15B13/02
Filed: 1966-12-28
Abstract: 1,133,892. Hydraulic control circuits. GENERAL PRECISION SYSTEMS Inc. Dec. 28, 1966 [Jan.14, 1966], No.57956/66. Heading F1P. The supply of working fluid and hence speed of a double-acting hydraulic piston 102, Fig. 7, is maintained constant against a varying reactor torque exerted by a rock shaft 20 driven by the piston 102, by controlling an adjustable orifice 276, 280, Fig. 13, in a by-pass 264, 262 connecting the delivery passage 76 of a constant flow electric motor driven supply pump 14 to a sealed pressurized return reservoir 36; said orifice being varied by a piston 246 held by a spring 252 in constant abutment with the free end of the rod 238 of a sensing piston 226 which assumes a position determined by the pressure difference between chambers 106, 108 either side the actuator piston 102. Pump delivery is connected to one or other chamber 108, 106 through feed passages 78, 80 of a four-way proportioning valve 89 having a spool 90 adjustably positioned by a plunger 91 controlled by a solenoid coil 92, through supply passages 82, 84; the return chamber being connected to reservoir 36 through a passage 88. In operation and during say downward stroke of piston 102 with valve urged towards the left, fluid from feed passage 80 is supplied to passage 84 and also to an end chamber 200 of a shuttle valve cylinder 186 thereby shifting the shuttle 192 to the right. Supply pressure is thus admitted to chamber 212 of valve 186 and also to chamber 228 of sensing cylinder; the other chamber 230 being connected to reservoir 36 through shuttle valve chamber 214, a passage 220 and exhaust passage 88 of valve 89. The solenoid coil 92 is variably energized by a potentiometer 174 and a feedback sensor 282 responsive to reactor forces on shaft 20. The potentiometer includes a rotor wiper 178 driven from the rod shaft 20 and associated with means not shown for indicating the angular position of the shaft relative to a fixed datum. During shut-down the fluid within the sealed reservoir 36 is maintained under pressure by a spring-biased inverted cup-shaped piston 38 in sliding sealing engagement with a cylinder housing 37 and when operating the pump 14 delivers to an accumulator chamber 138 to lift a piston 130 against a spring 146. The pump also delivers through a bore 166 Fig. 11 of piston 130 into a pilot chamber 164 thereby depressing a piston 162 integral with piston 38 thus assisting spring 154 to further pressurize reservoir fluid. Leakage is made up by admitting fluid through a fill port closed by a plug.
Patent GB-1411642-A (GB)
Title: Clutches
IPC: F16D3/70
Filed: 1972-12-18
Abstract: 1411642 Friction clutches; flexible couplings LOHMANN & STOLTERFOHT AG 18 Dec 1972 [17 Dec 1971] 58395/72 Headings F2C and F2U A pneumatically engaged friction clutch comprises a driven element 3 which is resiliently connected to a driven hub 2 by a circumferentially arranged series of spring elements 4 which comprise rubber rings 10 interposed between metal sleeves 5, 6, 11. The spring elements 4 are pre-tensioned to bias the clutch element 3 in a clutch disengaging direction. As shown, driven cones 3 are moved axially apart into engagement with complimentary surfaces on a driving drum 1 by supplying pressure air to a servo 14. In Fig. 4 (not shown) driven clutch discs (19) are moved axially into engagement with a driving disc (18) by supplying pressure air to a servo (14). The driven discs being connected to a'hub (2) by spring means (4).
Patent GB-1394815-A (GB)
Title: Dc-to-dc converters
IPC: H02M3/338
Filed: 1972-06-09
Abstract: 1394815 Measuring resistance GENERAL ELECTRIC CO Ltd 9 June 1972 58453/70 Heading G1U [Also in Divisions G3 and H2]  An insulation tester employs a DC-DC converter having automatic current limitation (see Division H2). As described, an oscillator comprising transistor 6 and transformer 1 is supplied from a 1-3 volt battery at terminals 5, 7, the output of the oscillator being rectified at 11 to provide 550V between terminals 12 and 13. This voltage is supplied to an insulation measuring circuit comprising a moving-coil meter 45 calibrated in megohms and feeding test terminals 46, 13. The voltage across terminals 12, 13 is stabilized for currents corresponding to insulating resistance greater than 0.5 megohms by action of components 34, 24, 22, 17. The scale at the low resistance end is arranged to be cramped by means of a current limiting circuit in which the output current is monitored by resistors 35, 36 and fed a diode 37 so as to reduce the output voltage under these conditions. Capacitor 39 prevents damage to the circuit if the test terminals 46, 13 are inadvertently connected to the mains supply. Lower resistance ranges are obtained by using lower voltages across terminals 7, 21 and 7, 42. Alternatively a floating circuit may be provided by rectifying the output of a floating winding (not shown).
Patent GB-1380703-A (GB)
Title: Projection stencil assembly
IPC: G06K15/12
Filed: 1971-12-20
Abstract: 1380703 Photographic type composing XEROX CORP 20 Dec 1971 [23 Dec 1970] 59122/71 Heading B6W Light from a flash source 50, Figs. 2 and 3, passes through an aperture 210, Figs. 2, 3 and 5, in a fixed structure 208, through a selected character arranged in a spiral array 202 in a rotating character disc 200, via a lens and mirror system 42, 44 and mirrors 49 supported on a moving chain 58, and through a line mask 6 on to a photo-sensitive, e.g. xerographic surface 2. One mirror 49 starts a new line immediately after a second mirror 49 finishes the previous line, the direction of movement of the mirrors being oblique to compensate for rotation of the drum carrying the surface 2. The disc 200 is provided with three spiral transparent portions, causing a variation in the exposure position within the limits of the aperture 210. The disc 200 is also provided with equally spaced character timing slits 204 and slits 38 defining the beginning of a set of characters.