baber/WOPTO huggingface dataset:
Patent GB-1175070-A (GB)
Title: Improvements in Currentless Chemical Metallizing Plating Processes
IPC: C23F13/00
Filed: 1966-12-23
Abstract: 1,175,070. Automatic control systems for chemical plating. FARBENFABRIKEN BAYER A. G. Dec.23, 1966 [Dec. 30, 1965], No.57653/66. Heading G3R. In an installation of the type including a bath for the metallic plating of articles by chemical action, those metal surfaces in contact with the bath which have to be protected against unwanted plating are included in an anodic passivation system, the anodic potential of the protected surfaces being automatically maintained at the necessary value by a feedback control circuit. As shown, a plating bath having a metallic surface which has to remain unplated contains a plating liquid in which are immersed a reference electrode 2 and a cathode 11. The voltage ui between the said surface and the electrode 2 is compared in a differential amplifier 1 with a reference voltage derived from a transformer winding 3 by way of a rectifier 4, a capacitor 5, a resistor 6, a Zener diode 7 and a potentiometer 8; any resulting error signal is applied to transistors 9, 10, which are connected as a Darlington pair and which control the passivating current flowing between the surface and the cathode 11 in such a manner that the surface is maintained at the desired positive potential. The passivating current is derived from a transformer winding 12 by way of a rectifier 13 and a capacitor 14. Batteries 17, 18 associated with a relay 19 provides a standby power supply should there be a mains failure.
Patent GB-1219899-A (GB)
Title: Improvements in buckets for earth-moving machines
Inventor: DUDLEY EDWARD THOMAS
IPC: E02F3/40
Filed: 1967-12-20
Abstract: 1,219,899. Excavator buckets. RUBERY, OWEN & CO. Ltd. 20 March, 1969 [20 Dec., 1967], No. 57804/67. Heading E1F. In an earth-moving bucket of the type having a back member comprising a rear wall provided with side plates and a front member pivoted at its upper end on the back member and comprising a bottom plate provided with side plates the rear wall of the back member is formed by a plate 10 having a substantially flat upper portion and a curved plate 12 welded to the lower part of said flat upper portion of the plate 10. The lower part of the plate may be forwardly cranked as at 11 and in the space defined between the lower parts of the plate 10 and the plate may be located transversely spaced, parallel webs 13, which are welded to the plate 12 and to the lower parts of the plate 10.
Patent GB-1249420-A (GB)
Title: Improvements relating to steering heads for vehicle wheels
IPC: F16C33/10
Filed: 1969-11-27
Abstract: 1,249,420. King pins; lubricating. DAIMLERBENZ A.G. 27 Nov., 1969 [27 Nov., 1968], No. 8048/69. Heading B7H. [Also in Division F2] An oil-lubricated steering head for a vehicle which comprises a king-pin 4 mounted in upper and lower bearings 1, 2 respectively, connected together by a system of passages 6, 9, 12 in the pin in which there is also provided, in the region of the upper bearing 1, a reservoir 7 connected to the system and communicating with part 6, 12 of the system leading to the lower bearing 2 by way of liquid-level maintaining means 11. As shown, the means 11 comprises a tube extended into the reservoir 7. A further reservoir 14 may be provided in the region of the lower bearing 2, communicating with a nipple 18 by way of liquid-level maintaining means 20. A space 24 above the upper bearing 1 is closed by a rubber cap 25 having an aperture 26 which acts as a relief valve opening to atmosphere when pressure in the space 24 exceeds atmospheric pressure.
Patent GB-1444787-A (GB)
IPC: C07C67/00
Filed: 1973-12-18
Abstract: 1444787 Alpha-chlorocarboxylic chloride production BASF AG 18 Dec 1973 [27 Dec 1972] 58509/73 Heading C2C Alpha-chlorocarboxylic acid chlorides of the general formula in which R<SP>1</SP> and R<SP>2</SP> are each H or alkyl groups, are prepared by reacting an acid chloride of general formula with Cl 2  at elevated temperature in the presence of H 2 SO 4 . The H 2 SO 4  preferably has a concentration of at least 96% by weight and is used in 0À1-6% by weight based on the amount of carboxylic chloride used. Preferably less than the stoichiometric amount of Cl 2  is used at a temperature of 40-110 C. In the examples chloroacetyl chloride is prepared.
Patent GB-1380431-A (GB)
Title: Machines for cutting grass
Inventor: HALLEUX P DE
IPC: A01D34/71
Filed: 1971-12-17
Abstract: 1380431 Rotary-scythe mower P DE HALLEUX 17 Dec 1971 [18 Dec 1970] 58671/71 Heading A1F In a lawn mower a motor 14 rotates via the vertical shaft 15 horizontal cutters 16 and in addition a member 17 and an attached vertical cylinder 18 which together with the lawn mower casing 12 form three sides of an annular tunnel 19. Air is drawn in through apertures 21 distributed in the casing 12, and grass and other waste matter is discharged through an aperture in the side of the casing 12. A powerful stream of air is produced in the tunnel 19 by the rotating parts, which may be shaped or provided with additional members to facilitate this. The helical air flow results in a cushion of air at higher pressure next to the casing 12. Accordingly grass and other waste products cannot lodge in the tunnel.
Patent GB-1173739-A (GB)
Title: Tubular Ceramic Filter
IPC: H01G2/00
Filed: 1968-12-11
Abstract: 1,173,739. Filters. ERIE TECHNOLOGICAL PRODUCTS Inc. 11 Dec., 1968 [29 Jan., 1968], No. 58901/68. Heading H3U. A filter comprises a stack of annular beads 1 of lossy magnetic material, e.g. a ceramic ferrite or resin-bonded iron powder, a conductor 2 extending through the stack and the latter being surrounded by a ceramic tube 3. Cylindrical end portions of the tube 3 are coated with metallic paint bands 4, 5 covered by a thin ceramic layer 6 extending the full length of the tube. The end surfaces of the tube are coated with metallic paint 16a to form terminals for the electrodes 4, 5, solder beads 18, 19 making contact between the terminals 16a and end terminals 16, 17. An electrode 20 on the surface of layer 6 provides a ground terminal in capacity relation to the electrodes 4, 5.
Patent GB-1217057-A (GB)
Title: Thermoplastic resin compositions
IPC: C08L69/00
Filed: 1968-12-12
Abstract: 1,217,057. Thermoplastic polymer compositions. MONSANTO CO. 12 Dec., 1968 [13 Dec., 1967], No. 59214/68. Headings C3F, C3G, C3P and C3R. Thermoplastic polymers contain as a processing aid an alkenyl succinic mono- or di-ester in which the alkenyl radical has a molecular weight of 400-3000 and is derived from a polymer of a C 3 -C 30  olefin. In examples, such aids are added to PVC, graft copolymer of vinyl chloride on chlorinated polyethylene, vinyl chloride/vinyl acetate copolymer, polymethyl methacrylate, polystyrene, ABS terpolymer, polyethylene, butadiene/styrene copolymer, polyvinyl acetate, polypropylene, ethylene/vinyl chloride copolymer, styrene/methyl methacrylate copolymer, styrene/acrylonitrile copolymer, methyl methacrylate copolymer with methacrylic acid or glycidyl methacrylate, methyl methacrylate/ acrylonitrile/acrylic acid copolymer, styrene/ acrylonitrile/acrylic acid copolymer, vinyl chloride/acrylonitrile/acrylic acid copolymer, poly - (α - methylstyrene), poly - 4 - methylpentene-1, polyoctadecene-1, polycarbonate of 1,1 - di - (4 - hydroxyphenyl) propane or cyclohexane or of 2,2-di-(4-hydroxyphenyl) propane, polyhexamethylene adipamide, polycaprolactam, cellulose acetate, ethyl cellulose, cellulose propionate and cellulose acetate-butyrate. Other additives may also be present.
Patent GB-1288288-A (GB)
IPC: C08L67/02
Filed: 1969-12-05
Abstract: 1288288 Polyester-polystyrene glass fibre compositions ASAHI KASEI KOGYO KK 5 Dec 1969 [9 Dec 1968] 59519/69 Headings C3P and C3R A composition comprises (a) a crystalline polyester obtained by polycondensing a glycol of the formula HO-(CH 2 ) l -OH wherein l is 2 to 10 and a dicarboxylic acid of the formula or esters thereof wherein R 1  and R 2  represent -(CH 2 ) n - where n is zero or 1 to 4, and X is   where Y is-(CH 2 ) n -,-(CH 2 ) n -CO-(CH 2 ) n -, -(CH 2 ) n -O-(CH 2 ) n -, -O-(CH 2 ) m -O- -(CH 2 ) n -S-(CH 2 ) n -, -S-(CH 2 ) p -S-, or -SO 2 - where m is 1 to 5 and p is 1 to 4, (b) 5 to 100%, based on the weight of polyester, of polystyrene or a copolymer thereof being added prior to the completion of the polycondensation reaction, and (c) 10 to 40%, based on the weight of the composition, of glass fibre. The polystyrene may be prepared during the preparation of the polyester. In the examples the polyesters are derived from ethylene glycol with dimethyl terephthalate, optionally in admixture with dimethyl isophthalate, or with the dimethyl ester of 1,2-bis-(p-carboxyphenoxy)ethane or derived from bis-(#-hydroxyethyl) terephthalate, the polyesters being mixed with polystyrene. A nucleating agent, e.g. graphite, talc or potassium benzoate may be added to the composition.
Patent GB-1343200-A (GB)
Title: Process for producing photoconductive materials
IPC: G03G5/08
Filed: 1971-12-23
Abstract: 1343200 Photo-conductive material KONISHIROKU PHOTO INDUSTRY CO Ltd 23 Dec 1971 [26 Dec 1970] 59925/71 Headings G2C and C17E A photo-conductive CdS, CdSe or CdSeS is fired in the presence of an actiator, a co-activator, a flux and a dispersant, the firing temperature being such that the dispersant does not melt nor causes agglomeration or fusion of the powder. The activator is preferably a halide, sulphate or nitrate of Ag, Au or Cu. The co-activator is NH 4 Cl or a compound of Al, In or Ga while the flux may be CaCl 2 , ZnCl 2 , NaCI or KCl. The dispersant is preferably NaI, KI, NaBr, KBr, NaCl, KCI, Na 2 SO 4 , CaCO 3 , Na 2 CO 3  or CaO. In an embodiment a mixture of CdS, CdCl 2 , NH 4 Cl and CuCl 2  is ground in water and dried at 140‹C. The dried mixture is mixed with a mixture of NaCl in alcohol, ground, and dried at 120‹C. The dried mixture containing NaCI is ground and heated in air at 590‹C. The fired mixture is washed in water to remove all traces of chloride ions and dried to yield a uniformly fine spherical powder. The washed powder may be further treated if required by mixing with NH 4 Cl and CdCl 2 , drying and firing to 590‹C. The further fired particles are ground , fired in a mixture of H 2 S + N 2  at 500‹C. and then in vacuo at 500‹C. The powder is allowed to cool in vacuo to 100‹C. and then dried in a desiccator. The further treated powder is dispersed in an alkyol resin and either coated on aluminium comb electrodes on a polyester sheet or an aluminium plate to form an electro-photographic element. The powder may also be used in image converters or intensifiers or photo-cells.
Patent GB-1421170-A (GB)
Title: Electrophotography
IPC: G03G15/05
Filed: 1972-12-29
Abstract: 1421170 Electro-photographic process CANON KK 29 Dec 1972 [30 Dec 1971]  60071/72 Heading G2H In a method of electro-photography wherein an insulating layer over-lying a photo-conductive layer is uniformly charged and then exposed to an original image to selectively activate the photoconductive layer in accordance with the image, the insulating layer is contacted with a non-insulative liquid and, while the photo-conductive layer is still activated a voltage is applied for said liquid to create in the insulative layer a charge pattern corresponding to that in the photo-conductive layer. The liquid is then removed from the surface. The photo-conductive layer may then be subjected to overall exposure. The image on the insulating surface may subsequently be developed with toner and transferred to a copy sheet. As shown, Fig. 5, a conducting liquid 7 is pumped into the space between a fibre optics plate 24 on the face of C.R.T. 23 and the insulating image-receiving surface of drum 11. Excess liquid is removed by a blade 14 and the surface dried with an air blower 25 before being overall exposed by a lamp 26 and developed at a station 27. In an alternative form, Fig. 4A, the liquid is pumped into the space between the drum surface and a transparent plate 12. Side members 15 prevent lateral leakage of the liquid. Excess liquid is removed with a blade 14 and the surface is dried with hygroscopic particles 16 dispensed from a reservoir 17 and removed from the surface with a blade 20. Alternatively the surface may be wiped with a band of hygroscopic material, Fig. 6A, (not shown). The conductive liquid is charged or discharged by connecting it with a voltage source. The connection may be by providing conductive portions on the plate 12, on a liquid supply pipe or on the blade 14. In Fig. 7A an air blast means 51 serves to prevent lateral outflow of liquid and both first and second blades 49 and 50 direct excess liquid to a single reservoir for recirculation. In a further form, Fig. 8A, (not shown) the blade 50 directs liquid to a separate reservoir. Fig. 10A shows a form wherein the drum moves upwardly relative to the liquid reservoir and a removal blade 62 is provided above the reservoir. An overflow 65 maintains the liquid at the correct level.
Patent GB-1258230-A (GB)
IPC: B02C9/04
Filed: 1970-12-19
Abstract: 1,258,230. Husking grain. MILLIAT FRERES S.A. 19 Dec., 1970, No. 60396/70. Heading A2Q. A process for removal of husk layer from grain with multi-layered husks, more especially for treatment of hard wheat grain in the production of semolina but applicable also to other grain; such as soft wheat, oats, rice, maize, barley, with multi-layered husks, consists in the repeated projection of the humidified grain against an abrasive surface, followed by separation of the removed layer from the residual grain. Apparatus for performing the abrading action comprises a rotor with blades 4 covered with a supple, elastic material fitted in the base of a vessel 1 which is lined with abrasive material and has charging and discharging openings closed by covers 2, 3. A charge of grain, together with an amount of water, admitted to the vessel 1 is circulated by the rotor, the blades of which are shaped so as to project the grains upwardly against the abrasive surface, for a period which may be determined by reference to the power absorption of the rotor, this power decreasing as abraded matter accumulates on the abrasive surface. The material discharged from the vessel 1 is subsequently separated in an air separator. The process may be carried out in several, e.g. four, stages, the separated wheat from each stage being fed to a vessel 1 of a succeeding stage in which a lesser amount of water is added and of which the rotor runs at a higher speed. Brushing devices for the grain are incorporated in the later stages.
Patent GB-1314198-A (GB)
Title: Process for polymerizing alpha-olefins
IPC: C08F10/00
Filed: 1970-12-21
Abstract: 1314198 Olefin polymerization catalyst FARBWERKE HOECHST AG 21 Dec 1970 [22 Dec 1969] 60672/70 Heading C3P Olefins of formula R-CH=CH 2 , where R is a C 1 -C 10  hydrocarbon radical, are polymerized at 20-200‹ C. and at pressures up to 50 atm. by means of a catalyst comprising (A) the hydrocarbon-insoluble product of reacting (a) an hydroxyl-containing magnesium compound, (b) a chlorine-containing Ti(IV) compound, and (c) an aluminium alkoxide and/or silicic acid alkyl ester; and (B) an organoaluminium compound. Component (A) is preferably prepared by reacting (a) with the pre-formed reaction product of (b) with (c), but all three can be reacted simultaneously or (b) can be reacted with the reaction product of (a) and (c). Suitable magnesium compounds include Mg(OH) 2  and basic magnesium chloride, nitrate, carbonate, sulphate, phosphate and acetate. The polymerization may be carried out in an inert diluent or in the gas phase, e.g. using preformed polymer to disperse the catalyst. Examples describe homopolymerizations of ethylene and propylene and copolymerization of ethylene with propylene or butene-1, catalyst component (A) being formed from TiCl 4 , one of the above-mentioned catalyst supports and Al(O-i-Pr) 3 , Al(O-i-Bu) 3 , Si(O-i-Pr) 4  or Si(O-i-Pr) 4 /Si(OEt) 4  and component (B) being AlEt 3  or Al(i-Bu) 3 . The activity of the catalysts is such that purification of the resulting polymers is not usually necessary.
Patent GB-1255967-A (GB)
Title: A tractor-mountable grading device
Inventor: BARRAS HERBERT
IPC: E02F3/20
Filed: 1968-12-23
Abstract: 1,255,967. Earth graders. H. BARRAS. 23 Dec., 1968, No. 61106/68. Heading E1F. A tractor-mountable grading device comprises a first frame that can be so mounted on the rear of a tractor that it can be swung vertically, a second frame pivoted on the first frame for to be swung vertically relative thereto, a cutter disc 16 so supported from the first frame that the disc will extend outwards of an adjacent rear wheel of the tractor when the device is mounted on the tractor, "and a rotary, vaned impeller unit 15  so supported on the second frame as to receive earth excavated by the disc and to cause such earth to be discharged clear to one side of the excavator. A ramp 19 is provided at the bottom of the impeller to bridge the gap between the lower portions of the casing and the disc to cause transfer of excavated earth from the disc into the impeller unit and to scrape and grade the ground between the impeller casing and the blade.
Patent GB-1370289-A (GB)
Title: Yarn false-twisting apparatus
IPC: D02G1/02
Filed: 1970-12-28
Abstract: 1370289 False twister; driving; knitting machine MACOTEX (MACHINERY) Ltd 8 Dec 1971 [28 Dec 1970] 61386/70 Headings D1C DID and D1F The rotary twisting components of a falsetwister feeding yarn to a fabric-forming machine are driven from the machine by a mechanical drive. As shown, Fig. 1, falsetwister 4 feeding yarn to knitting machine 1 is driven from machine shaft 34 via variable speed changer 37 and flexible shaft 15. The speed ratio of changer 37 is varied by pattern drum 41 and quality control cam 40 of the machine via pivotable arm 42 and cable 46. In twister 4, Fig. 3, yarn passes successively through twist heads 8<SP>1</SP>, 8<SP>2</SP>, 8<SP>3</SP>, 84 and over inclined heaters 9. The speeds of pulleys 14<SP>1</SP>, 14<SP>2</SP>, engaging yarn entering and leaving the device, are selected to tension the yarn. Each twist head has two hollow friction-twist components 12 each constructed in accordance with Specification 1239412. Each component receives two yarns passing in opposite directions through the component, which are rotated with pulleys 14 by the shaft 15 via spindle 16 and belts 19, 23, 25. Solenoid 32, actuated by the stopping of the knitting machine, acts via cables 31 to slide heaters 9 inwards and to raise yarn guides 33. For Figures see next page
Patent GB-1197010-A (GB)
Title: A Tubular Heat Exchange Element and a method of and apparatus for Manufacturing such an Element
Inventor: MCELROY ARTHUR HAMILTON
IPC: B21C37/26
Filed: 1968-12-31
Abstract: 1,197,010. Heat exchange tubes. A. H. Mc- ELROY. 31 Dec., 1968 [29 March, 1968], No. 61925/68. Heading F4S. [Also in Division B3] Fin strip 40 of generally L-shaped crosssection is wound helically on to a length of heat exchange tubing 22, adjacent turns of the fin strip being in deformable engagement with one another. The flange portions 40A, 40B of adjacent turns overlap as shown. The radially outwardly extending portion of the fin strip is tapered. A method and apparatus for making the finned tube is described (see Division B3).
Patent GB-657158-A (GB)
Abstract: 657,158. Kinematograph films; titling. CLARK, D. M. (Technicolor Motion Picture Corporation). Jan. 21, 1949, No. 1750. Drawings to Specification. [Classes 98 (i) and 98 (ii)] A kinematograph matte film is made by lightly exposing the whole area of each frame, fully exposing a part or parts of each frame, and developing the film, so that it is rendered substantially opaque in its fully-exposed parts, and in the remaining lightly-exposed areas, substantially transparent but with enough silver particles at its surface to conduct away static electricity. Wording for sub-titles for films is recorded in transparent letters on an opaque master film, which is printed by projection on to a second film, which is slightly fogged by a flashing lamp and then developed. The resulting matte bears opaque lettering on a field having a light distribution of silver particles (preferably to a density of about 0.12) providing an electrically-conducting surface. To prepare a film with transparent lettering, printing is effected through the film negative and the matte. Preferably the negative is placed between the matte and an unexposed film for contact printing, and an earthed brush makes electrical contact with the conducting surface of the matte.
Patent GB-726673-A (GB)
Abstract: 726,673. Turning gear. BENDIX AVIATION CORPORATION. Oct. 16, 1952 [Oct. 17, 1951], No. 26005/52. Class 7 (5). In an engine starter drive comprising a power shaft 1, a pinion 15 slidably journaled on the latter for movement into and out of mesh with a gear 16 of the engine to be started, means for traversing and rotating the pinion, such as a control nut 10 and a screwshaft 8, including an over-running clutch 11, 12, and centrifugal means, for example a latch 25, for holding the pinion in mesh with the gear 16 until shaft 1 is rotating above a given speed, frictional coupling means are provided such as inter-threaded coil springs 34, 35, to transmit a limited toque from the pinion to the power shaft 1 when the pinion 15 overruns, and to unlatch the pinion. The screwshaft 8, is formed in two interlocking parts that are additionally held together by a sleeve 20 fixed to the driving head 2, whilst the nut 10 has the clutch teeth 11 at one end and the latch 25 near the other end, a sleeve 28 being journaled on the nut. The sleeve 28 incorporates a flange 29 having lugs 31 engaging similar lugs 32 on the driven clutch member 13 which is splined on the pinion 15 and provided with the clutch teeth 12. The springs 34, 35 which are located between flange 29 and a nut flange 33, are in frictional contact with each other and the flanges. In operation, the drive is transmitted through shaft 1 and spring 6 to screwshaft 8 thereby causing rightward movement of the nut 10 ; the the pinion 15 is thus traversed into mesh with engine gear 16 via member 13 and a meshenforcing spring 18, which traversal ceases when nut 10 reaches the end of the screwshaft threads and latch 25 drops behind a shoulder 27. When the engine fires the pinion overruns the shaft 1 and a spring 22 yields to permit the teeth 12 to ratchet over teeth 11 ; in the event of a false start the spring 22 re-engages teeth 11 and 12 when the engine speed reaches that of shaft 1. Upon the engine becoming selfoperative, torque is transmitted from the overrunning pinion 15 and member 13 through sleeve 28 and springs 34, 35 to the barrel 19 and nut 10 connected thereto ; if the starter motor is still operative this torque assists in accelerating the shaft 1 to the speed required for withdrawal of the latch. If the starter motor is switched off immediately the engine becomes self-operative the torque transmitted through springs 34, 35 will gradually accelerate the shaft 1 to the required speed for latch withdrawal and hence demeshing of the pinion.