baber/WOPTO huggingface dataset:
Patent GB-1378866-A (GB)
Title: Production of plastics material suitable for use as a material  for casting moulds
IPC: C08F2/44
Filed: 1971-12-21
Abstract: 1378866 Porous polymer compositions KERAMISCHE INDUSTRIE LAUFEN AG FUR 21 Dec 1971 [23 Dec 1970] 59291/71 Heading C3C A plastic having open pores, e.g. of average pore size 5-20Á, is made by polymerizing a pourable mixture consisting of a major amount by wt. of a pulverulent polymer, a liquid monomer or liquid partially polymerized monomer, water, a surfactant and an accelerator for the polymerization. The pulverulent polymer may be a homo- or co-polymer of methyl methacrylate or an acrylic acid copolymer in powder form and may contain a polymerization catalyst. The monomer may be a methacrylate, styrene and/or an unsaturated polyester. The polymerization may be carried out in a mould and the product may be used as a construction material for casting mould.
Patent GB-1452098-A (GB)
Title: Television scannign linearity device
IPC: H01F21/08
Filed: 1973-12-21
Abstract: 1452098 Inductors RCA CORPORATION 21 Dec 1973 [12 Jan 1973] 59558/73 Heading H1T [Also in Division H3] An inductor, whose inductance changes with the direction of current in its winding, comprises a former 50 bearing a winding, the former having a recess into which extends a combination of a magnetically permeable core member and a permanent magnet, the magnet being magnetized to have both poles on a surface disposed adjacent the core member. As shown the magnet 53 may be barium ferrite and the core member 54 may be a saturable ferrite. The combination may be press fitted into the recess completely or partially Fig. 7 (not shown) and bonded in place with epoxy resin. Terminals 52 may be used for connexions to a circuit board (not shown). The inductor may be used in TV scanning linearity circuits described, for example, in U.S. Specification 3452244 (see H3T).
Patent GB-1367587-A (GB)
Title: Vehicle for transporting loose agricultural materials
IPC: A01D90/06
Filed: 1972-12-27
Abstract: 1367587 Loading agricultural trailers MASCHINENFABRIK FAHR AG 27 Dec 1972 [1 Feb 1972] 59624/72 Heading B8E  A trailer for loading loose material has a cutting device 9 and a conveyer 10 to feed material such as cut maize stalks to a chaffcutting unit 11 from which the loose material is blown up a projecting passage 12 to an orifice 13 in the end wall 5 of the vehicle. The orifice 13 leads into a passage under a permeable roof covering 14 which widens longitudinally to the full width of the trailer at its rear end 6 to cause even loading. The central portion 16 is vaulted substantially in the form of the parabolic projection of the material. The material is discharged by a conveyer 8.
Patent GB-1210430-A (GB)
Title: Method of production of an alloy, and the alloy thereby obtained
IPC: C22C1/10
Filed: 1968-12-17
Abstract: 1,210,430. Hot extrusion of metal powders. CENTRE D'ETUDE DE L'ENERGIE NUCLEAIRE. Dec.17, 1968 [Jan.24, 1968j, No.59843/68. Heading C7D. A sintered alloy such as ferritic or austenitic steel on Ni based alloys, optionally containing a ceramic oxide such as the oxides of Al, Mg, Zr, Ti or zirconium silicate is made by compacting a powder mixture of the constituents in a metal casing closed by a cover with a bore, closing the bore with a plug, hot extruding the assembly and finally removing the metal of the casing. It is essential that the cover is made of a metal which deforms less than the metal of the powder during the hot extrusion. The powder mixture for producing a ferritic steel contains 83% Fe, 13% Cr, 2% Mo, 2% TiO2 and optionally 1% W, 0À5% N6 and V. The Fe powder should be 2-5Á, the Cr 6-10Á and the oxides less than 0À5Á. The fine powder sizes are obtained by crushing and then ball milling the mixture in a vibratory container. The powder is charged in a steel container 1, closed with a stainless steel cover 2 containing a bore 3 and a recess 7 in the inside face. The charged container is cold pressed at 3Kgms/mm. and the bore 3 is then plugged. The assembly is heated to 700C. compacted at 100 Kgms/mm<2> and after welding the cover 2 and plug 4 to the casing 1 and machining to size the assembly is heated to 1100-1200 C. and hot extruded.
Patent GB-1217929-A (GB)
Title: A hopper for agricultural machines
IPC: A01C15/16
Filed: 1968-12-20
Abstract: 1,217,929. Seed and fertilizer distributers. DEERE & CO. 20 Dec., 1968 [21 Dec., 1967], No. 60625/68 Heading A1D. [Also in Division B8] A hopper 10 for use as a seed or fertilizer distributer has a clean-out opening or openings 24 in its curved bottom 22, which opening is closed by a removable cover 26 secured to the hopper by one or a plurality of spaced latching members 32 mounted on one wall 18 of the hopper and one or a plurality of spaced toggle-lever devices 40 mounted on the other wall 30 of the hopper. The bent lip 36 at one edge of the cover 26 is engaged under the lips 24 of the latching members 32 and the bent lip 38 at the other edge of the cover is engaged by the lower lips 60 of resilient sheet metal members 58 of the toggle lever devices, the other end of each member 58 being provided with a pivot 54 secured to a swing- able handle 52 which is pivoted at 50 to a member 42 secured to the wall 30 of the hopper. To release the cover 26 each handle 52 is swung downwardly about pivots 50 so as to release lips 60 from the lip 38  after which the cover may be removed. In the closed position as shown, the toggle 40 is in its over-centre position, i.e. the pivot 54 is above the line A which passes through the pivot 50 and the edge of lip 38.
Patent GB-1327108-A (GB)
Title: Preparation of foams
IPC: C08G18/20
Filed: 1970-12-21
Abstract: 1327108 Carbodiimide-linked polymeric foam BASF WYANDOTTE CORP 21 Dec 1970 [13 April 1970] 60699/70 Headings C3C and C3R Process for preparing a rigid cellular foam characterized by the presence of carbodiimide linkages, as disclosed in Specification 1,326,240, with, however, the difference that a co-catalyst is used along with the 2,4,6-tris-(dialkanolamino) - s - triazine. The co-catalyst is a 1,3,5 - tris(N,N - dialkylaminoalkyl) - s - hexahydrotriazine, preferably 1,3,5-tris (N,N-dimethyl - 3 - aminopropyl) - s - hexahydrotriazine. The catalyst preferably has a composition such that the weight ratio of triazine to hexahydrotriazine is between 1 : 7 and 7 : 1. The reaction is exothermic and requires no external heat. Plasticizers, surfactants (such as polysiloxane) and fillers (such as CaO, CaCO 3  and BaSO 4 ) may be present in the product.
Patent GB-1323109-A (GB)
Title: Organic photoconductive materials for electrophotography
IPC: G03G5/07
Filed: 1970-12-23
Abstract: 1323109 Electrophotographic element FUJI PHOTO FILM CO Ltd 23 Dec 1970 [30 Dec 1969] 61277/70 Heading H1K [Also in Division C3] An electrophotographic element comprises a conductive layer having coated thereon a photoconductive layer comprising a polymeric compound having repeating units of formula wherein X is an atom or group of atoms to complete a heterocyclic ring, R<SP>1</SP> and R<SP>2</SP> are H, alkyl, aryl or together with the carbon atoms to which they are attached are an arylene group, R<SP>3</SP> is H, alkoxy, cyano or phenyl and n is an integer of 1 to 4. In the preferred embodiments X is O, S, Se, NR or CR 2  where R is preferably CH 3 . The polymer may be coated on a support of paper, plastics, or aluminium by itself or together with an organic binder, a plasticizer or a dye sensitizer. The polymers are made by the reaction of a polyisocyanate with a heterocyclic compound having an exomethylene group in the enamine form. An excess of polyisocyanate may be used and the residual isocyanate groups reacted with hexamethylene diamine or a diol to cross-link the polymer.
Patent GB-1199377-A (GB)
Title: Metal/Refractory Fibre Composite Products.
Filed: 1968-12-24
Abstract: 1,199,377. Powder metallurgy. Coating with metals. MONSANTO CO. Dec. 24, 1968 [March 26, 1968], No.61304/68. Addition to 1, 199, 376. Headings C7D and C7F. A composite metal article reinforced with aligned inorganic fibres is formed by extruding a dispersion of metal coated inorganic fibres and powdered metal in a film forming organic colloid medium into a coagulating bath for the medium, burning off the organic constituents of the coagulated product and hot pressing the product so obtained. The extruded material may be formed into a lay up, either by using its inherent stickiness or by using an adhesive such as polyvinyl alcohol, starch, carboxymethyl-cellulose or gum tragacanth before the carbonaceous material is burnt off. The reinforcing fibre may be fibres of any refractory inorganic material of length 5-7, 500 microns and aspect ratio 5-1000 and may be a carbide of tantalum, niobium, hafnium, zirconium, tungsten, titanium, vanadium, aluminium, molybdenum, boron, beryllium, chromium, uranium, thorium or silicon, an oxide of magnesium, cerium, gadolinium and hafnium, a silicide of tantalum, tungsten, niobium or molybdenum, a boride of lanthanum, zirconium, tungsten, niobium, titanium or a nitride of silicon, vanadium, tantalum or niobium. Mixtures of different fibres may be used. The fibres are coated with a thin film of metal or metal alloy by for example, electro-plating, dipping into a molten bath, spray deposition, vapour deposition or gas plating from readily decomposible metal compounds. Examples of suitable coating metals are silver, gold, nickel, chromium, cobalt, titanium and copper. The metal powder which forms the matrix may be the same as the coating metal or may include any of the elements Al, Sb, As, Be, Bi, Cd, Ca, Ce, Cr, Co, Nb, Cu, Dy, Er, Gd, Au, Hf, Ho, In, Ir, Fe, La, Pb, Li, Mg, Mn, Mo, Nd, Ni, Os, Pd, Pt, Pr, Re, Rh, Ru, Sm, Se, Ag, Sr, Ta, Tc, Te, Tb, Th, Tm, Sn, Ti, W, V, Y, Yb, Zn or Zr. The carbonaceous material is preferably burned out by heating first to a temperature below 400 C. and then heating to a temperature between 500 C. and that at which the metal powder is affected. After removal of carbonaceous material, the article may be cold pressed before it is hot pressed.
Patent GB-1235000-A (GB)
Title: Latex thickening process
IPC: C09D7/00
Filed: 1968-12-30
Abstract: 1,235,000. Thickening latices. BALM PAINTS Ltd. 30 Dec., 1968 [28 Dec., 1967], No. 61665/68. Heading C3P. Aqueous polymer latices having a flow coefficient, greater than 1À5 and a plastic viscosity of at least 0À3 poise at 25‹ C. and. polymer particles of 0À04-2 microns are thickened by adding 0À1-10% by weight of dispersed polymer of a copolymer of vinyl alcohol and a C 4 - C 18 . comonomer (which forms a water-insoluble homopolymer) having a molecular weight of 2000-10,000 and in which the molar percentage of comonomer varies between 10 and 50% for a C 4  monomer and 0À2 and 8% for a C 13 -C 18  monomer as given in a table. In the examples acrylic copolymer latices are thickened with (a) partially hydrolysed polyvinyl acetate, (b) a partial acetal of polyvinyl alcohol with benzaldehyde or propionaldehyde, (c) hydrolysed vinyl acetate-vinyl tert.-carboxylate, (d) hydrolysed polyvinyl acetate chain-stopped, with n-octyl mercaptan.
Patent GB-1237341-A (GB)
Title: A method of manufacturing transparent conductive coatings
IPC: B05D5/12
Filed: 1969-12-29
Abstract: 1,237,341. Conductive coatings. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 29 Dec., 1969 [31 Dec., 1968], No. 63041/69. Heading B2E. Insulating substrates, e.g. paper, are provided with a transparent, conductive coating containing at least one ionic salt, at least one tanning agent and a hydrophilic binder and optionally a plasticiser, said coating being colourless in the presence of a concentrated solution of the salt(s). Suitable salts are LiCl, CaCl 2 , MgCl 2 , KCl and ZnCl 2  and the tanning agents specified are formaldehyde, glyoxal, diacetyl, mucochloric acid, aluminium formate, Al 2 (SO 4 ) 3 , K 2 SO 4 , AlK(SO 4 ) 2 , Al(NH 4 ) (SO 4 ) 2 , FeK(SO 4 ) 2  and CrK(SO 4 ) 2 . The hydrophilic binder may be gelatine, polyvinyl alcohol, methyl or ethyl cellulose, hydroxy- or hydroxyethyl cellulose or carboxyethyl cellulose. Glycerine, triethylene glycol or sorbitol may be included as plasticisers on the coating.
Patent GB-643754-A (GB)
Abstract: 643,754. Joint-making packing. UNIVERSAL MESURE SOC. A R. L. Dec. 8, 1947, No. 32380. Convention date, Dec. 18, 1941. Class 122(iii)] [Also in Group XXXVII] A gas tight joint between two members comprises a thin element of flexible mineral material previously impregnated with siccative oil and subjected to a hardening treatment under pressure and a rigid element made of a hardened luting material which joins the members together in their relative position thereby maintaining the flexible element in its compressed condition. In a joint, according to the invention, for a mercury contact switch a thin asbestos washer 12, 13 previously impregnated with siccative oil is interposed between each end of the body 1 of the switch and the end closing caps 3, 6, a luting material 14, 15 is cast between the ends of the body 1 and the cylindrical parts 5, 8 of the caps 3, 6 and the assembly is compressed by a screw clamp 16 and baked slowly in an oven at a temperature of about 200‹C. The assembly is then allowed to cool slowly and the clamp removed.
Patent GB-2001658-A (GB)
Title: Insulating material, particularly for insulating plates for ingot moulds
IPC: C04B18/08
Filed: 1978-07-27
Abstract: The material contains 85 to 97 parts by weight of microspheres, which is a product obtained from power plant dust, and 3 to 15 parts by weight of an organic resin.
Patent GB-2004733-A (GB)
Title: Rail glides
IPC: A47H15/04
Filed: 1978-09-18
Abstract: A rail glide (11) for slidably suspending objects from a flange type rail (10) can be attached to the rail (10) at the ends thereof or at any location between the ends, both before and after the rail (10) has been fixed to a base structure, such as a wall. The rail glide (11) is particularly adapted for use in connection with hanging draperies or other relatively lightweight objects from an elevated conventional I-beam curtain rail (10). <IMAGE>
Patent GB-2006662-A (GB)
Title: Mechanical shear with hold down
IPC: B23D15/04
Filed: 1978-11-02
Abstract: A mechanical shears which comprises a main eccentric carrying shaft 2 and a movable carriage 7 supporting a hold down. The carriage 7 with the hold down is lowerable by means of a wedge element 8 which is slidable at right angles to the direction of movement of the carriage in timed relationship with the operation of the shears. The wedge element 8 is arranged between a shear stand 1 and the hold down carriage and is operatively connected by way of a two-armed lever 5 to a connecting rod 4 mounted on an auxiliary eccentric or crank pin 3 arranged on the shaft 2. One arm of the two-armed lever 5 is connected by means of a link 6 to the wedge element 8, the other arm of the lever 5 being connected to a force balancing system 9. <IMAGE>
Patent GB-2010794-A (GB)
Title: Activated carbon
IPC: G21F9/02
Filed: 1978-12-20
Abstract: The activated carbon comprises activated carbon impregnated with one or more chromium compound, one or more heavy metal salt and one or more alkali metal iodide. The heavy metal salt may be a salt of Fe, Co, Ni, Cu, Ag or Au, and the activated carbon may also be impregnated with iodine. Although the compounds present undergo undesired reaction with each other and sometimes with the carbon, the impregnated activated carbon can be used to provide a compact filter (e.g. in respiratory devices) for adsorbing radioactive iodine and compounds thereof as well as other harmful gases (e.g. chlorine cyanide) from air.
Patent GB-2014805-A (GB)
Title: Protecting converters
IPC: H02M1/34
Filed: 1979-02-02
Abstract: An electrical switching circuit for use in d.c. to a.c. transistor inverters feeding an inductive load in which, in order to reduce high current transients at the moment each transistor 2, 3 switches on, an inductor 1 is placed in series with the load to slow down the rate of rise of current. An energy absorbing means in the form of a capacitor 4, 5 and parallel resistor 8 is connected, by means of respective steering diodes 6, 7 to receive energy stored in the inductor 1 due to its own self-inductance. <IMAGE>
Patent GB-2017861-A (GB)
Title: Means for selectively transmitting drive
IPC: F01L9/10
Filed: 1979-04-03
Abstract: Drive is transmitted from a cam (1) to a push rod (2) via a body of liquid trapped between two pistons (5, 6). A control element (7) is normally urged against a seat (11) by pressure in the body of liquid but can be lifted off its seat by the application of pressure to liquid in a control chamber (15) via a solenoid operated valve which can establish selective communication between a pressure source e.g. pump and a sump. When the control element moves clear of its seat, liquid trapped between the pistons acts on a seat-engaging face of the control element and displaces the control element instead of driving the push rod. <IMAGE>
Patent GB-2022401-A (GB)
Title: Drill stands
IPC: B23B45/14
Filed: 1979-04-03
Abstract: A drill stand, with a height adjustable drill clamp 3, in which the clamp-carrying column 2 can be adjusted in its inclination. <IMAGE>
Patent GB-2049070-A (GB)
Title: Bearings
IPC: F16C33/41
Filed: 1979-05-14
Abstract: A ball bearing is provided with a cage 16 which, in addition to holding the balls in spaced relation, also includes integral sealing lips 20, 22 which sealingly engage the inner and outer races to prevent the ingress of foreign matter. There may be a single cage inserted from one side of the bearing and engaging all of the balls or two cages inserted from opposite sides and engaging respective sets of alternate balls. <IMAGE>
Patent GB-2067226-A (GB)
Title: Device for feeding yarn to a knitting machine
IPC: D04B15/48
Filed: 1979-05-16
Abstract: A yarn guide 13 is associated with a yarn feeding roller 8 mounted on a driven shaft 3. The roller 8 is defined by two discs 9, 10 provided with slots 11, arranged symmetrically in relation to a plane perpendicular to the rotation axis of the roller 8, and by a band 12 running between the discs 9 and 10 in respective opposing slots 11. The band 12 forms a yarn feeding surface whose diameter is variable by moving the band relative to the slots 11. The guide surface of yarn guide 13 has its upper portion disposed at an angle to the rotation axis of the roller 8 and its lower portion disposed parallel to this axis for steady guiding yarn loops along the yarn feeding surface of the roller. <IMAGE>
Patent GB-2051485-A (GB)
Title: Antenna coupler
IPC: H03H7/38
Filed: 1979-05-30
Abstract: A high power, high frequency radio transmitter is connected to an antenna through an adjustable impedance matching device which comprises a helical coil 10 having a number of straight-sided triangular turns 12. Remotely operable, pneumatic cylinders 18 are mounted on each side or segment of the coil turns in electrical contact therewith and have piston rods 22 which can be moved into and out of electrical contact with a respective fixed conductive bus 28a, 28b disposed alongside the coil. Additionally, a number of capacitors can be connected into circuit as required by the similar movement of piston rods into contact with a similar bus, each such piston rod being housed within a pneumatic cylinder electrically connected to a respective one of such capacitors. <IMAGE>
Patent GB-2020967-A (GB)
Title: Improvements in or relating to walking sticks
IPC: A45B3/00
Filed: 1979-06-20
Abstract: A device which can be used as a walking-stick or for crossing barbed wire fences, comprises an elongate body portion (3) at one end of which is fixed a hollow cross-piece (1) having an axial slot (1') extending its full length adjacent the end of the body portion (3), and a step member comprising two arms (4) for movement from a closed position in which they lie parallel to the axis of the body portion (3) to one in which they extend at right-angles to said axis and normal to the axial direction of the cross-piece (1). Preferably, the distance between the cross-piece (1) and the step member is variable. An extension (5) is slidable in or on the body portion (3) and is clampable thereto, the end of the extension preferably being provided with a spike and flange as in a conventional shooting-stick. <IMAGE>
Patent GB-2054132-A (GB)
Title: Improvements relating to damper systems for air/gas ducts
IPC: A62C2/14
Filed: 1979-07-21
Abstract: An air or gas duct (1) can be fully or partially blocked by pivoted blades (3, 4). These blades can be operated in two modes, one emergency the other normal. They are spring urged towards the obstructing position and held open by a pneumatic actuator (9) working against the spring. A fusible link device (18) within the duct or a solenoid valve (17) responsive to fire, gas or smoke alarm signals can deprive the actuator of air and cause rapid closure. A pressure controller (20) downstream of the damper blades normally governs the actuator to maintain constant pressure. <IMAGE>
Patent GB-2026276-A (GB)
Title: Particle monitor
IPC: G01S13/56
Filed: 1979-07-23
Abstract: Apparatus and method are provided for monitoring the occurrence of agglomerates of flue dust in the gas stream emitted by an industrial chimney, by means of continuous microwave Doppler radar sampling a cross-section, obliquely angled to the chimney axis, of the total gas stream adjacent the chimney mouth. <IMAGE>
Patent GB-2055393-A (GB)
Title: Heat and moisture sensitive ink compositions
IPC: C09D11/00
Filed: 1979-08-15
Abstract: An ink composition suitable for use in contact or ink jet printing operations, comprises a solution of (a) a soluble resole resin; (b) a combination of dyes of different colour wherein one dye is water soluble and the other is relatively water insoluble, and (c) a solvent for the resin and the dye combination selected from the lower aliphatic monohydric alcohols or a mixture thereof, the composition being formulated to undergo a colour change upon exposure to water at a temperature of 120 DEG F or greater. The inks are suitable for use in printing coated and uncoated metal and plastics surfaces, and are useful as sterilization or pasteurization indicators.
Patent GB-2028691-A (GB)
Title: Making power transmission shafts
IPC: C21D9/28
Filed: 1979-08-20
Abstract: A method of forming a power- take-off or drive shaft includes the steps of providing a shaft (10) with a power- take-off end (10A) having a diameter uniform with the diameter of a greater portion (13) of the shaft (10), heat- treating said end (10A) and end (10C) to between 50 and 54 on the Rockwell C scale and grinding the surface of the shaft (10) to remove any imperfections and circumferential lines there around. The power-take-off end is provided with nineteen splines (11) and consequently twenty serrations (12) between the splines (11). <IMAGE>
Patent GB-2060423-A (GB)
Title: Screen changers for use with heat sensitive materials
IPC: B29C48/03
Filed: 1979-10-09
Abstract: A filter for screening plastics comprises a passage intersected by a rectilinear slideway supporting separate screen blocks 43, 44, 45 to enable one of the blocks at a time to be located in an operative position extending across the passage while the next block 44 is in a stand-by position adjacent to the passage. Drive means A such as a two-stage hydraulic ram is operable firstly to cause said stand-by block to push said operative block part way from its location across said passage so that the filtering apertures in said stand-by block 44 register partly with the passage so that said stand-by block may be prefilled by inflow of plastics and outflow of air through a second passage in the body communicating with the apertures in said stand-by block, and in a subsequent movement to push operative block 45 away from the passage and replace it by said stand-by block 44. The device is particularly suitable for use in association with a screw extruder to be operated for extended periods with polyvinylchloride or rubber which are adversely affected by prolonged heating. <IMAGE>