baber/WOPTO huggingface dataset:
Patent GB-1484762-A (GB)
Title: Multiple copy electrostatic hold-down apparatus
IPC: G03B27/00
Filed: 1975-09-25
Abstract: 1484762 Electrostatic sheet holding copyboard SIMCO CO Inc 25 Sept 1975 [11 Nov 1974] 39342/75 Heading G2A An electrostatic copyboard comprises an insulative plate, and an applicator forming the output of a uni-directional high voltage D.C. generator, which applicator can be traversed across a sheet lying on the plate, and having automatic switching means for cyclically altering the connection of the generator to the applicator so that the applicator and the other surface of the plate are coupled alternately to the same side or to opposite sides of the D.C. output. As shown, the insulative plate is a glass sheet A, and its lower surface is coated with a transparent conductive film 18. One or more negatives N are placed on the glass plate, and finally a photo-sensitive sheet P. The exposure is made by lamps 12 within a mounting cabinet 14. Alternatively the apparatus may be arranged for exposure from above. The high voltage generator B develops.a negative output with respect to ground across resistor 24, and is connected via resistor 22 and lead 21 to the electrode 18. The other side of the generator is connected by a lead 30 to the applicator C, which may be a roller or brush, and which can be traversed across a sheet lying on plate A. The power supply to'the generator has a switching device D comprising a pair of breaker points 32 opened and closed by a rotating cam 34. This is driven by a motor 36 so that the points 32 are closed, and then opened, at one second intervals. When the points are open, the copy board is connected to ground via resistors 22 and 24. When the points are closed a negative voltage is applied to electrode 18. When a negative sheet N is placed on plate A, and the applicator C drawn across it, the charges produced on sheet N will depend on the alternative negative and ground potentials produced on electrode 18, as seen in Fig. 2A (not shown). If a second negative N is laid over the first, the passage of the applicator will produce charges thereon as seen in Fig. 2B (not shown). If this is overlaid by a photo-sensitive sheet P, and the applicator passed once again, charges will be produced as in Fig. 2C (not shown). The varying distribution pattern of charges on the different sheets results in their being satisfactorily pinned together electrostatically, and any variation in the contact pressure between the applicator and the sheets, and also in the  insulation characteristics of the sheets themselves, introduces random variation in the charge patterns which assist the pinning effect.
Patent GB-1321654-A (GB)
Title: Glass-to-metal seals
IPC: C03C3/118
Filed: 1970-08-14
Abstract: 1321654 Glass composition; sealing glass to metal GENERAL ELECTRIC CO 14 Aug 1970 [29 Sept 1969] 39416/70 Heading C1M A matched glass to metal seal is between a metal alloy of composition in percentages by weight of Ni 27-32; Co 14-19; Mn < 1; Fe balance and a glass consisting essentially of in percentages by weight: the amount of K 2 O exceeding that of Na 2 O by at least a fifth of the former. A particular example is: SiO 2  65À1; Na 2 O 3À4; K 2 O 6À0; B 2 O 3  23À0; Al 2 O 3  1À5; F 2  0À8; As 2 O 3  0À2.
Patent GB-1440819-A (GB)
Title: Vehicle suspension systems
IPC: B62D55/06
Filed: 1973-08-21
Abstract: 1440819 Endless-track vehicles; vehicle suspensions CATERPILLAR TRACTOR CO 21 Aug 1973 [22 Aug 1972] 39646/73 Headings B7H and B7D A suspension assembly for an endless-track vehicle comprises a track frame 14 for pivotal connection to the main frame of the vehicle, a first crank member 22 pivotally connected at 24 to the front end 16 of the track frame 14, a front idler wheel 30 mounted on a forward leg 26 of the crank member 22, a roller assembly 32 mounted on a rearward leg 28 of the crank  member 22, and a track chain engaging the idler wheel 30 and the roller assembly 32. The pivot point of the crank member 22 is positioned above the line of action 58 of force applied to the crank member 22 as a result of track chain forces so that the crank member is urged to pivot the idler wheel downwardly and the roller assembly upwardly. A second crank member 38 connected to the rear end 18 of the track frame 14 carries a rear idler wheel 46 and a second roller assembly 48. Link members 72, 74 pivotally connected to the track frame 14 carry further roller assemblies 76, 78. Rubber pads 62, 64, 100, 102, 106, 108 mounted on the crank members 22, 38 and link members 72, 74 and on the track frame 14 co-operate to limit upward movement of the roller assemblies.
Patent GB-897465-A (GB)
Title: Improvements in or relating to getters
IPC: H01J7/18
Filed: 1959-11-23
Abstract: A getter for a thermionic receiving valve is an alloy of a rare earth metal of the lanthanum group preferably cerium such as 65-80% rare metals of the lanthanum group, 5-15% Al, 8-20% Fe, 0-5% Mo and 5-10% Cu which is heated in the presence of hydrogen to make it absorb some hydrogen and so to activate it.  The getter is non-vaporable and stable in air.  It is preferably a selective getter, selective means that the getter is to absorb other gases but leave a residual pressure of 10-3, e.g. 10-5 to 10-7 mm hydrogen.  The particular metals with which the cerium is alloyed have the property that the solubility of hydrogen therein increases with increasing temperature. To make the getter contain hydrogen, mix pulverised getter with another pulverised substance containing hydrogen, e.g. Ti hydride in proportion of 2-40% preferably 20-30% by weight which releases its hydrogen and allows its absorption by the getter.  During the following heat treatment of the getter, part of the hydrogen being supplied is absorbed, e.g. immediately before evacuation when the alloy is heated from 500-700 DEG C. hydrogen being supplied.  The getter may be compressed tablets without binder or a layer sintered to a metallic support. The cathode may be of the oxide or storage type.
Patent GB-1392549-A (GB)
Title: Frame for holding a plurality of parts to be subjected to  electro-chemical treatment
IPC: C25D17/08
Filed: 1972-08-25
Abstract: 1392549 Supporting workpieces during electro-chemical treatment SEIDEL KG GEBR 25 Aug 1972 [30 August 1971] 39701/72 Heading C7B A plurality of parts having circular edges or apertures are electro-chemically treated e.g electro-plated or anodized whilst secured to a frame comprising a conductive main structure consisting of at least one metal web 2 secured to a conductive bar (not shown) and holders 3, one for each part 1,5 and each composed of three non- conductive rods engaging the circular edge Fig. 2 or aperture Fig. 1 and converging towards a point in a direction either towards or away from respectively at least one resilient rail 4 pressing the holders carrying the parts against the web. Holders may be of polypropylene or polycarbonate and connected in pairs to a clamping rail 6 Fig. 3. The resilient  rails may be flexible air-filled tubes of elastomeric substance protected by PTFE and arranged in pairs fitted with holders on two opposite sides of a web 7 Fig.4. A plurality of metal webs may be combined to form a metal grid. The parts may be metallic workpieces or non-metallic workpieces rendered conductive.
Patent GB-876022-A (GB)
Title: Hemioxonol dyes, processes for preparing them and photographic emulsions containing them
IPC: G03G5/06
Filed: 1957-12-23
Abstract: 876,022. Hemioxonol dyes. KODAK Ltd. Dec. 23, 1957 [March 12, 1957], No. 39806/57. Class 2(4). [Also in Group XX] Hemioxonol dyes having the general formula: wherein R and Ri are aryl, alkyl or substituted alkyl groups or together complete a 5- or 6- membered heterocyclic ring, D completes a cyclohexene ring, substituted or not, and Q completes an indandione nucleus or a 5- or 6- membered heterocyclic nucleus, are prepared by condensing together a secondary amine (NHRR 1 ), a 3-methyl- 2-cyclohexen- 1-one and a compound of the formula:- wherein R 2  is a carboxylic acyl group and R 3  is an aryl group or R 2  and R 3  are hydrogen atoms. Examples are given of the preparation of dyes wherein Q completes a 1 : 3-diethyl- 2-thiobarbituric acid, 3-ethyl-rhodanine, 3-phenylisoxazolone-5 or 1-phenyl- 3-methyl- 5-pyrazolone residue, the cyclohexene nucleus D may have methyl substituents, and R and R 1  are both npropyl or #-hydroxyethyl, or together complete a piperidyl, morpholinyl, pyrrolidyl, decahydroquinolyl or indolinyl ring.
Patent GB-1190990-A (GB)
Title: Improvements in or relating to Substituted Piperidine Carboxylic Acid Derivatives
Inventor: RASSAT ANDRE
IPC: C07D211/94
Filed: 1967-08-31
Abstract: 1,190,990. Nitroxide. COMMISSARIAT A L'ENERGIE ATOMIQUE. 31 Aug., 1967 [28 Sept., 1966], No. 39944/67. Heading C2C. Novel 4 - amino-2,2,6,6 - tetramethyl - 4 - carboxy-piperidine-nitroxide and its metal salts are prepared by reacting 2,2,6,6-tetramethyl-4- oxo-piperidine-nitroxide with ammonium carbonate dissolved in alcohol and a solution of an alkali metal cyanide, agitating the mixture. filtering off the precipitate of spiro-[5,4<SP>1</SP>- hydantoin-2<SP>1</SP>2<SP>1</SP>,6<SP>1</SP>,6<SP>1</SP>-tetramethyl piperidine nitroxide formed and hydrolysing the precipitate using barium hydroxide at a temperature of the order of 160‹ C. under pressure, followed where desired by salt formation.
Patent GB-399928-A (GB)
Abstract: 399,928. Conical and disc mills. HAMBLIN, W. G., 16, Overndale Road, Fishponds, Bristol. June 2, 1932, No. 15587. [Class 59.] In a mill comprising two or more grinding members, one of which has a recessed or serrated grinding surface, a scraper or grinding ring is provided having a number of projections which enter the recesses in order to remove the film of ground material from the grinding surface. As shown, the recessed, stationary surface 1 contacts with the rotary, conical surface 2 and the scraper ring 4 is provided with projections 4a which enter the recesses 3. The scraper 4 may be adjusted relatively to the surface 2 by springs 12 encircling studs 10 provided with wing nuts 11 or the studs may be pressed downwardly by leaf-springs, or screw-compressed springs may bear directly or through the medium of a spigot on to the scraper ring. A removable edge may be provided on each projection, or the projections may be backed off at one edge or have tapered sides. The scraper ring may form an additional guiding surface.
Patent GB-1454038-A (GB)
Title: Gear motor
IPC: F03C2/08
Filed: 1974-09-13
Abstract: 1454038 Rotary positive-displacement fluidmachines ROBERT BOSCH GmbH 13 Sept 1974 [13 Sept 1973] 40007/74 Heading F1F A gear motor comprises a sun gear 11 Fig. 1, non-rotatably mounted on a member 18, a coaxial sun gear 13 carried by a drive-shaft 24, and either planet gears 10, 12 engaging the respective sun gears and drivingly connected together, or planet gears 75 to 78, Fig. 3, engaging and common to both sun gears, the planet gears being rotatably mounted in a rotor 4. In Fig. 1, member 18 has working-fluid supply and discharge passages 28, 32 connected via grooves 31, 35 and 42, 44 to the respective pairs of gears 10, 11 and 12, 13, a slide valve 26 being operable to disconnect gears 12, 13 from the supply and discharge passages for higher speed, lower torque operation. The rotor has a balancing mass 5'. In Fig. 3, supply and discharge passages 87, 88 communicate with the meshing zones of the planet gears 75 to 78 with the sun gears via passages 107, 108, which also communicate with recesses 111, 113, 115 and 118 in rotor end-plates 67, 68 the fluid acting in the recesses against housing ends 61, 62 to press plates 67, 68 into sealing engagement with the gears.
Patent GB-1079048-A (GB)
Title: Improvements in or relating to antennas
IPC: H01Q11/04
Filed: 1964-10-02
Abstract: 1,079,048. Aerials. G. S. GUSTAFSON. Oct. 2, 1964 [Oct. 4, 1963], No. 40187/64. Heading H4A. An aerial consists of at least two co-planar rectangular loops, the longer sides of which are all parallel and are, for the most part, enclosed in tubes of ferromagnetic material. As described, a single conductor is wound anticlockwise to form one loop with sides 13, 14, 15, 16 and then clockwise to form another loop with sides 17, 18, 19, 20, the long sides 13 and 17 of the two loops being adjacent. Ferrite tubes 22, 23, 24 enclose one long side 15 of one loop and the two long sides 17, 19 of the other. The ends of the conductor 10 are taken to terminals 11, 12. A plastics sheath 25 encloses the aerial and comprises a central tube from which tubular portions branch off for containing the outer portions of the loops. The sides of the loops, and the ferrite tubes, may be secured in the various tubular portions of the sheath. The inner conductor and the sheath of a coaxial cable 25 may be connected to the terminals 11, 12 or only the inner conductor may be connected to one or both of the terminals, the sheath being connected to it through a matching resistor (Figs. 2 and 3, not shown). It is stated that the aerial will receive signals satisfactorily over a broad band of frequencies, such as from 50 to 200mc/s., and that it exhibits directivity which may be utilized for weak signals.
Patent GB-961209-A (GB)
Title: Method of introducing induction-heated ingots into the container of extrusion or cable sheath presses
Inventor: VOGTMANN HANS
IPC: B21C33/00
Filed: 1960-11-24
Abstract: 961,209. Extruding. HYDRAULIK G.m.b.H. Nov. 24, 1960, No. 40499/60. Heading B3P. In an extrusion or cable-sheathing process, a billet 1a heated in an induction coil 4 is propelled into the billet container 9 by the thrust produced by asymmetrical disposition of the induction field relatively to the billet. The coil is mounted on a carriage 6 slidable transversely along guides 7. Extrusion billets such as 1b 1c are fed along a device 2. When the coil is opposite a stop 5 the leading billet is pushed therein and against the stop 5 by a ram 3, controlled automatically. The heating current is switched on and regulated automatically and produces a field asymmetrical to the axis of the billet. Upon reaching the correct temperature the current is stopped and the carriage 6 is then moved into the extrusion axis, the coil is again energized and the asymmetric field propels the billet into the container 9 where it is subsequently extruded by ram 8. In another embodiment, the stop 5 may be secured to the carriage and then the coil need not be deenergized during its transverse movement. When the stop is finally withdrawn the billet is propelled immediately into the container. In a further embodiment the coil has a symmetrical heating winding and a second asymmetrical winding which is switched on when the coil is on the container axis. The coil may be split longitudinally to permit removal of a billet.
Patent GB-939096-A (GB)
Title: Irradiation of polymeric materials
IPC: B29C71/04
Filed: 1961-11-13
Abstract: A polymer whose molecules cross-link under irradiation with ionizing radiation is subjected to irradiation with ionizing radiation in the presence of nitrous oxide with no more than 10% oxygen.  The polymer may be polyethylene, polystyrene, polypropylene, polyacrylic ester, polyvinyl chloride, natural or synthetic rubber e.g. styrene-butadiene or a polyester or polyamide e.g. nylon and may be in the form of film, sheet, rod or tube.  The radiation may be g -or X-ray, electron beams or other actinic ray and the dosage may be 1 X 106 to 1 X 109 roentgens.  The nitrous oxide may contain a small amount of an inert gas, e.g. N2 or A and less than 10% of a free radical scavenger, e.g. O2, and may be at 600 mm. Hg. or above pressure and at above room temperature.  In examples low density polyethylene film is irradiated with g -rays at 20 DEG C. in the presence of N2O gas and raw rubber and nylon sheets are irradiated with anelectron-beam.
Patent GB-1044040-A (GB)
Title: Improvements relating to polyurethane elastomers
IPC: C08G18/66
Filed: 1963-10-15
Abstract: Polyurethane elastomers are prepared by (1) reacting together in any order 15-50% (by weight of the total glycol) of a polypropylene ether glycol of average M.W. 900-4000; (2) 85-50% (by weight of the total glycol) of a polytetramethylene ether glycol of average M.W. 1800-3000; (3) toluene 2,4 diisocyanate or a mixture of 2,4 and 2,6 toluene diisocyanates; and (4) an arylene diamine having a pKb of at least 9.7 and having both amino radicals directly attached to aromatic nuclei, 1.5 to 2.5 moles of the diisocyanate being used for each mole of glycol, and 0.85-1.05 moles of diamine being used for each mole of diisocyanate in excess of the stoichiometric equivalent of the glycol.  The preferred diamine is 4,41 methylene bis - (2 - chloroaniline).  Other diamines e.g. 3,31-dichlorobenzidine, 4,41-diaminodiphenyl ether, 4,41-diaminodiphenylthioether and 4,41-isopropylidene bis-(2-chloroaniline) may also be used.
Patent GB-1508313-A (GB)
Title: Utensil contents level controller
IPC: H05B3/68
Filed: 1975-05-23
Abstract: 1508313 Liquid level indication J M OVERTON and M G OVERTON 23 May 1975 [19 Sept 1974] 40799/74 Headings G1H and G1W [Also in Division H1] An apparatus for preventing the contents of a utensil falling below a minimum level comprises a compound lever balance 1, a weight 1D slidable along an arm of the balance 1, a set of separable contacts 1B, 1J one of which is adjustably mounted on the balance arm, and any electrical heater filament 1F, switch 1E and socket outlet 1G connected in circuit with the contacts 1B, 1J. The contents of a utensil positioned on a stand 1A are heated by the filament 1F when the switch 1E is closed, and if the contents falls below a minimum level, determined by the position of the weight 1D, the balance arm moves downward to separate the contacts 1B, 1J, cutting off the voltage to the filament 1F. If the utensil has its own heater filament, it is plugged into the electrical socket outlet I G and the switch 1E is left open.
Patent GB-1399790-A (GB)
Title: Reciprocating compressed-air engine in combination with a  device of a driving piston of the engine
IPC: F01L25/06
Filed: 1973-08-30
Abstract: 1399790 Engine valve-gear REXSON 30 Aug 1973 [1 Sept 1972] 40812/73 Heading F I M The main distributing valve 3 of a reciprocating compressed-air engine is controlled by a pilot valve 2 including a double piston 10, 11 fast with a reversing rod 7 axially-slidable between abutments in the hollow piston-rod 6 at the engine piston 4. Compressed air is directed constantly to one end X of the main valve 3 and via pilot valve 2 to the opposite end Y. In the position shown, the compressed air from line 24 is directed to the underneath of engine piston 4 to raise the piston which, eventually, raises also rod 7 to move piston 10 to close the compressed air from end Y of the main valve, so that the main valve switches over. Towards the end of each stroke, the piston 10, 11 is moved in advance piston 4 by compressed air to prevent the end of stroke positions from being positions of equilibrium.
Patent GB-948930-A (GB)
Title: Improvements in or relating to belt conveyor arrangements
IPC: B07C1/02
Filed: 1960-11-30
Abstract: 948,930. Delivering sheets; sheet separators. TELEFUNKEN A.G. Nov. 30, 1960 [Dec. 1, 1959], No. 41150/60. Headings B6B and B6H. An endless belt conveyer for delivering letters, cards or other flat objects to a pile has parts of a pair of endless belts constituting the conveyer guided round rollers carried by a movable carriage whereby the point of delivery may be varied in accordance with the size of the pile. A base-plate 1 has mounted thereon a stack support in the form of an endless belt 2 which moves slowly in the direction indicated. A carriage 7 is mounted on rails 9, 10 above the belt 2 and is movable along the rails in a direction parallel to the belt 2. Two further endless belts 12, 13 have contiguous portions which start near rollers 14, 15, round which the belts are respectively guided, and which extend round rollers 16-20 mounted on the carriage 7 to a point 21 where the belts diverge. After the point 21 the belt 12 passes round rollers 22, 23, also mounted on the carriage, and roller 24, mounted, together with roller 14 on the base-plate 1. The belt 13 passes round rollers 30, 26 mounted on the carriage and rollers 27, 29 mounted on the base-plate together with roller 15. The rollers 24, 27 are driven and spring-biased rollers 25, 28 maintain tension in the two belts. A spring-biased jockey roller 32 helps keep the contiguous belt portions in contact. Letters are fed between the belts 12, 13 at a point 11 and are delivered to a pile 3 on the belt 2 at the point 21. The pile 3 abuts against an endless belt 4 having perforated portions 4<SP>1</SP>. The belt is driven in the direction indicated and when a portion 4<SP>1</SP> is located opposite a source of suction 5 the end letter of the pile 3 is separated from the pile and fed between the belt 4 and a driven roller 6 to a further conveyer. The carriage 7 is moved along the rails 9, 10 by a driving motor controlled by a feeler contacting the pile 3 which motor moves the carriage in either direction or allows it to remain stationary in dependence upon the position of the feeler. As the carriage moves the shortening or lengthening of the belt portions between the rollers 14, 15 and 16 is compensated for by the corresponding lengthening or shortening of the belt portions between the rollers 23 and 24 and 26 and 27.
Patent GB-1469239-A (GB)
Title: Piezoelectric ceramics
IPC: C04B35/491
Filed: 1974-09-06
Abstract: 1469239 Substituted lead zirconate titanate DEFENCE SECRETARY OF STATE FOR 6 Sept 1974 [31 Aug 1973] 41188/73 Heading C1J A polycrystalline lead zirconate titanate ceramic composition, having formula ABO 3  where A is lead and B is Zr and Ti and comprising lead zirconate and lead titanate in solid solution in the mol ratio range 40 : 60 to 90 : 10, comprises a pentavalent element and a monovalent element in the atom ratio 3:1, wherein the monovalent and pentavalent elements substitute for 0À1 to 4À0 atom per cent of B, the pentavalent element being Nb, Ta or Sb, with the monovalent element being Na, K or Ag, provided, that, when the pentavalent element is Ta or Sb, the monvalent element is not Ag. The ceramic may be used in transducers.
Patent GB-864617-A (GB)
Title: A process for the production of alkali metal and alkaline earth metal borohydrides
IPC: C01B6/00
Filed: 1957-03-28
Abstract: Alkali or alkaline earth metal borohydrides are prepared by reacting an alkali or alkaline earth metal alcoholate with a substituted diborane containing up to 4 hydrocarbon radicals, or a substituted borine BRR21 where R is a hydrocarbon radical and R1 is hydrocarbon or H.  Where the substituted borine contains no H, then H2 must be present for reaction. Reaction may be effected in inert organic liquid aliphatic or aromatic hydrocarbons, ethers, or tertiary amines, e.g. hexane, benzene, tetrahydrofuran, or diglycol dimethyl or triglycol trimethyl-ethers.  If reactants and products are insoluble in the liquid, reaction may be effected with simultaneous comminution, e.g. in a ball mill.  Where ethers are used the borohydride is formed as an etherate, and with tertiary amines the reaction may be under pressure at above 160 DEG C.  Reaction may be in inert gas e.g. N2 or A, with heat with, or without, distilling or filtering off the boron hydrocarbon also formed, and the substituted borine or diborane should be in excess.  The boron trihydrocarbons formed may be hydrogenated to borines as in Specification 854,919 and the other product, B (OR) R2, may be converted to boron trialkyls by aluminium trialkyls.  Colloidal boron formed in the reaction may be washed out with Solvent.  In examples; (1) NaOCH3 is reacted with B2H2(C3H7)4, and (2) Ca(OCH3 is reacted with B2H3(C2H5)3.