baber/WOPTO huggingface dataset:
Patent GB-975625-A (GB)
Title: Power transmission gearbox means
IPC: F16H3/00
Filed: 1963-10-25
Abstract: 975,625. Reverse gear control; fluid-pressure brakes. W. E. HARDMAN PTY. Ltd. Oct. 25, 1963 [Oct. 29, 1962], No. 42212/63. Headings F2D and F2F. A reverse gear for boats is engine-driven through a spring-engaged clutch and has its input shaft 1, Fig. 2, surrounded by a ring- shaped piston 9 in a slave cylinder 5 to which liquid under pressure is admitted through a pipe 50, 47 during a ratio shift for disengagement of the clutch by actuation of the usual radial throw-out levers 19, a pipe 49 simultaneously supplying liquid under pressure to a second slave cylinder 37 containing a ring-shaped piston 41 which is slidden against spring bias to engage a brake collar 39 fast on the gearing output shaft 28. Change of mesh of the gearing elements, comprising a direct-drive dog clutch 27, 31 and a reverse drive gearwheel 32 axially slidable into mesh with a countershaft-driven idler gear 33, can thus be effected without clashing. The clutch and brake control slave cylinder 5, 37 are fed through the common pipe 50 connected to a master cylinder 51, Fig. 5, containing a piston 60 reciprocated from a gearshift handle 62. The piston 60 has at its lower end a detent pin 61 selectively engageable, when the gearshift handle 62 is in its raised position, in one of three holes 57-59, Fig. 4, in a fixed mount 56, selection of the desired hole being effected by oscillation of the master cylinder 51 about the axis of a journal-pin 53 mounted in a bracket 54. In the form shown, the journal-pin 53 is formed with gear teeth 67 meshing rack teeth 66 along the side of a two-ended piston 65 in a double-acting master cylinder 64. The two working spaces at the ends of the master cylinder 64 are connected through pipes 70, 71, Fig. 1, to slave cylinders 72, 73 oppositelydisposed on the gearing 2 and containing pistons at the ends of a common striker rod 74, Fig. 6, connected by a selector fork 75 to the reverse gear 32 &c. Thus oscillation of the master cylinder 51 and the journal-pin 53 acts through the double-acting master cylinder 64 &c. to establish forward or reverse, engagement of the main clutch and disengagement of the output shaft brake 39 following ratio establishment being effected by depressing the gearshift handle 62 with the pump piston 60. Consequential engagement of the pin 61 on the piston 60 in one of the holes 57-59 holds the gear in a ratio-established position or in neutral. In one modification, Figs. 7, 8 (not shown), the rack and piston gearing between the journal pin 53 and the master cylinder 65 is replaced by an arm on the journal pin having at its end a slide pin engaging a transverse side groove in the piston. In another similar modification, Fig. 9 (also not shown), the slide pin is replaced by a yoke engaging the side groove.
Patent GB-1397703-A (GB)
Title: Method of producing a superconductor
IPC: H01L39/24
Filed: 1973-09-07
Abstract: 1397703 Welding by fusion; making superconductive cable KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTTE AG 7 Sept 1973 [16 Oct 1972] 42214/73 Headings B3R and B3A [Also in Division H1] A superconductor comprises a copper strip 1 and a niobium strip 5 superimposed on one another and connected together by blind seam arc welding using one or more non-consumable electrodes 4 disposed on the copper side of the superimposition, the copper strip melting and producing a diffusion layer between the copper and the niobium. Preferably the welding is effected using shielding gas. A plurality of niobium strips 5 may be disposed side-by-side and connected to the copper strip. When forming two or more blind seams, the seam spacing should preferably be such that the adjacent molten areas merge, and preferably the copper/ niobium connection should extend over the entire contact area. As shown in Fig. 1, a copper strip 1 (e.g. 0À5 mm. thickness) and one or more (side-by-side) niobium strips (e.g. 0À1 mm. thickness) are continuously drawn off drums 2, 6 and welded together at 3 using a steel or ceramic backing plate 7 having poor thermal conductivity to check heat dissipation on the niobium side. The welded strip superimposition is then rolled at 9 to a smaller thickness, formed into a tube 10 by means not shown, tube seam welded at 11, corrugated at 12, and finally wound on a storage drum not shown. In respect of the seam welding at 11, the edge of the strip superimposition should preferably be free from niobium. The blind seams may be longitudinal (Figs. 2, 3, not shown) using electrodes staggered or abreast, or transverse (Fig. 4, not shown) an oscillating electrode producing a zig-zag or, with intermittent strip drawing off, a square-ended meandering seam. The low temperature cable of Fig. 5 comprises a corrugated tube 14 produced as in Fig. 1 with the niobium outermost, a corrugated tube 15 with the niobium innermost, and further corrugated tubes 18, 20, 21. The space inside the tube 14 is traversed by liquid helium; the 14/15 space has disposed therein paper insulation traversed by liquid helium; the 15/18 space is evacuated; the 18/20 space has disposed therein an insulation traversed by liquid nitrogen; and the 20/21 space is evacuated.
Patent GB-1312382-A (GB)
Title: Apparatus for controlling thickness of cast anode copper and like
IPC: B22D39/00
Filed: 1970-09-03
Abstract: 1312382 Casting machines KENNECOTT COPPER CORP 3 Sept 1970 [18 Sept 1969] 42308/70 Heading B3F [Also in Division G1] In apparatus in which the thickness of castings, produced from material poured into a mould or series of moulds 11 is controlled, the operation is started by manual or automatic actuation of a switch 68, Fig. 8 (not shown), to cause a piston of an air powered cylinder 21, to move a platform 22 and a gauge platform 27, latched to platform 22 by a bolt 33, downwards until the lower end of an indexing rod 29 contacts the bottom of mould 11 and halts the movement, air pressure then moves a piston rod 24a to actuate a brake lever arm 39, Fig. 6 (not shown), to apply a brake 37 to rod 21a, to prevent further movement thereof, a valve 51, Fig. 7 (not shown), is now actuated to admit air to enter a cylinder 35, to retract the bolt 33, and the cylinder 26 to retract the platform 27 and rod 29 a predetermined distance according to the desired casting thickness and to operate a "pour" light 67 and a "stand by" light 66 in a control box, Fig. 6 (not shown). An operator now fills the mould 11 with molten copper until the contact with electrodes 31, 32 completes an electric circuit to actuate a valve 63 and a switch 70, Fig. 8 (not shown), to operate a "stop" light 65 and the cylinder 24 now retracts the rod 24 to release brake 37 and the cylinder 21 raises the platforms 22, 27, with rod 29 in preparation for another cycle.
Patent GB-1196304-A (GB)
Title: A Screen Section for Dewatering Equipment
IPC: D21D5/04
Filed: 1967-06-22
Abstract: 1,196,304. Screening apparatus. BAUER BROS. CO. 22 June, 1967 [29 June, 1966], No. 42591/69. Divided out of 1,196,303. Heading BID. The disclosure is identical to that in Specification 1,196,303 but the claims relate to the construction of the screen and its side members (29).
Patent GB-933710-A (GB)
Title: Improvements in or relating to the production of high molecular weight polymers
IPC: C08G2/00
Filed: 1960-12-12
Abstract: a ,b -Unsaturated aldehydes are polymerized in the presence of a free radical liberating catalyst and a compound having at least one hydroxyl group in the molecule.  The aldehyde can be acrolein, methacrolein, a -ethyl acrolein, a -isobutyl acrolein, a -chloroacrolein, b -phenyl acrolein, a -decyl acrolein, or a -cyclohexyl acrolein.  The free radical liberating catalyst can be a peroxide, hydroperoxide, a perester, potassium persulphate, alkali perborate or an azo compound (list given).  The catalyst is present between 0 1% and 5% by weight of monomer.  The compound containing the hydroxyl group can be water, cyclohexanol, ethanol, acetic acid, propionic acid, ethylene glycol, benzoic acid, 1,5-pentane diol, hexylene glycol, allyl alcohol, glycerol or 1,4-butane diol. The amount present can be varied between 2% and 75% by weight of the monomers.  An emulsifying agent can be present and polymerization is preferably carried out in an inert atmosphere.  The unsaturated aldehyde can also be polymerized with minor amounts (up to 25%) of one or more of the following monomers; vinyl pyridine, styrene, allyl alcohol, allyl esters, acrylic and methacrylic acids and esters, vinyl acetate, ethylene, propylene, vinyl chloride, acrylonitrile and methacrylonitrile. Minor amounts of polyethylenically unsaturated compounds may also be used.  The polymerization is preferably carried out in aqueous medium at a temperature below 30 DEG C.  The resulting polymer has an intrinsic viscosity of at least 0 9 (in its solubilized form) and a theoretical aldehyde function of at least 95%.  The polymer can be solubilized by treating with sulphur dioxide, alkali bisulphite, ammonium bisulphite, hydrocarbyl ammonium bisulphites or any primary or secondary amines.  The sulphur dioxide reacted polymers can be further reacted with a primary or secondary amine, a watermiscible alcohol or hydrogen sulphide.  Specification 829,601 is referred to.
Patent GB-1153108-A (GB)
Title: Photocomposing Apparatus
IPC: B41B21/32
Filed: 1967-09-20
Abstract: 1,153,108. Photographic type-composing. RADIO CORPORATION OF AMERICA. 20 Sept., 1967 [11 Oct., 1966], No. 42756/67. Heading B6W. Photographic type-composing apparatus comprises a housing 10, Fig. 1, constructed round three bars and on shock-absorbing supports 6, the bars supporting a cathode-ray tube 1 and slidable lens unit 2, and a film support 3, Fig. 2, including supply and take-up cassettes 21, 22 containing reels tensioned by motors 23, 25 The film 20 passes over a support plate 35 having joined recesses 42 connected to a vacuum source, and a perforated web 36 runs between the film and the plate, so that the film and web are held against the plate by suction, the web being driven stepwise by a motor 40 to feed the film. The take-up cassette, Fig. 3, includes guide rollers 51, 52 over which pass protective webs 54, 56 to be wound on to the reel 53 on either side of the web.
Patent GB-1049313-A (GB)
Title: An electrical connector
IPC: H01R4/10
Filed: 1964-10-21
Abstract: 1,049,313. Terminals. R. E. LAWLOR, and P. A. CORNELL. Oct. 21, 1964 [Oct. 28,1963], No. 42996/64. Heading H2E. In an electrical terminal comprising two members A, B, each having a split cylindrical portion 10, 20 and an apertured tail 13, 23, the member A fits inside the member B and is capable of limited rotation with respect to the latter. Each member has two diametrically opposite apertures 11, 12; 21, 22 which become aligned when the tail portions 13, 23 are divergent, and a deformable metal retainer sleeve C is inserted through the apertures. In use a cable end 31 is inserted into the retainer sleeve C and the tail piece 23 is moved downwards by a screw 34, Fig. 4 (not shown), so that the cable with the sleeve C becomes pinched between the two members A, B. The members A, B may be made from strap metal, and the ends of the sleeve C may be riveted to the member B.
Patent GB-881481-A (GB)
Title: Underwater coatings resistant to growth
IPC: C09D5/16
Filed: 1959-12-18
Abstract: A composition for growth-resistant underwater coatings contains an ammonium or amine salt of a chlorinated dihydroxy-diphenyl.  Suitable salts are those of ethylene diamine, diethylene triamine, triethylene tetramine, methylamine, dimethylamine, triethylamine, hydroxylamine, hydrazine, piperidine, pydridine, benzylamine, stearylamine, and tetraethyl ammonium.  Examples are given of metal plates coated with layers of chlorinated rubber (of which the priming coat may also contain minium), and protective coatings containing hardened rosin, alkyl resin containing linseed oil, mixed naphthenates, zinc oxide, and the triethylene tetramine salt of tetrachlorodihydroxy-diphenyl; one such coating also contains cyclo-rubber.ALSO:An anti-fouling paint for ships' bottoms comprises hardened rosin, linseed-oil-modified alkyl resin, cobalt, lead and manganese naphthenates, zinc oxide, the triethylene tetramine salt of tetrachloro-dihydroxy-diphenyl, white spirit and, optionally, cyclorubber.  The salts of chlorinated dihydroxy diphenyls in general with diethylene triamine, ethylene diamine, methylamine, dimethylamine, triethylamine, hydroxylamine, hydrazine, piperidine, pyridine, benzylamine, stearylamine and tetraethyl ammonium are also mentioned.
Patent GB-1133059-A (GB)
Title: Back-washable water filter plants
IPC: C02F1/00
Filed: 1967-09-22
Abstract: 1,133,059. Back-washable bed filter. SULZER BROS., Ltd. 22 Sept., 1967 [22 Sept., 1966], No. 43287/67. Heading BID. A back-washable filter plant comprises a nozzle floor 5 for supporting granular filter material 4; a collecting reservoir 9 for filtrate beneath the nozzle floor; dip pipes 7 for the nozzles 6, having air inlets 8; means (not shown) for introducing wash water into reservoir 9; a scouring air inlet-duct 12; and dip pipes 13 with air inlets 14 inside the duct 12 and outlets 16 above the level of the inlets 8 of the dip pipes 7. As described, the flow resistance of pipes 13 can be varied, e.g. by throttling. To clean the bed 4, compressed air, then a mixture of air and water, and then water only may be used. Air introduced through duct 12 forces water up through pipes 13 until the water level 15 is low enough to permit air to use into the space above water level 10, to displace water until level 10 is low enough to allow the air to rise through pipes 7.
Patent GB-953215-A (GB)
Title: Improvements in textile testing apparatus
Inventor: LUCZYNSKI WLADYSLAW FILIP
IPC: G01N33/36
Filed: 1959-12-23
Abstract: 953,215. Testing extensibility of fabrics. FRYMANN & FLETCHER Ltd. Dec. 20, 1960 [Dec. 23, 1959], No. 43616/59. Heading G1S. In an apparatus for determining the extensibility of textile fabrics the fabric is stretched between clamps 3, 9 and the stretching force is applied by a weight 17. As shown in Fig. 1 the weight 17 is connected by cords 11,19 to the clamp 9 which is movable along rods 12 and to a carriage 21 movable along a rod 18. Initially the cord 19 is taut as shown in Fig. 3. The carriage 21 is then pulled along the rod 18, against the action of a dashpot 24, by a handle 130 the force of the weight 17 is gradually transferred to the cord 11 which finally supports the whole weight. Thus the rate of increase of the stretching force can be manually controlled. In the embodiment shown in Fig. 4, the clamp 9 is connected by a cord 37 with the weight 17 and a lead screw 30 rotatably mounted in a fixed nut 32 abuts the clamp 9. In this example the lead screw is turned by a handle 33 gradually transferring the action of the weight 17 to the clamp 9 until the end of the screw is entirely freed from the clamp. In both embodiments the extension of the fabric is read from a scale 7. In a further modification of the apparatus shown in Fig. 4 (Fig. 8, not shown), the nut 32 is formed as a hinged quickly-releasable half-nut spring-urged into engagement with the screw 32. Thus the screw may be moved axially rapidly prior to a test.
Patent GB-1525005-A (GB)
Title: Thermionic reaction cathode
IPC: H01J1/28
Filed: 1975-10-23
Abstract: 1525005 Cathode materials and processing BBC BROWN BOVERI & CO Ltd 23 Oct 1975 [25 Oct 1974] 43623/75 Heading H1D A thermionic cathode with an emissive monolayer of T, La or Th includes a compound which releases one of the elements by a replenishment reaction during cathode operation and Pd, Pt, Rh or Ru to promote diffusion of the Y, La or Th to the monolayer and prevent impoverishment due to evaporation during high temperature operation. Preferred cathodes comprise sintered powdered W, Mo or Ta bodies containing carbide to reduce the compound in the form of an oxide. In one example Mo and La 2 O 3  powder mixture is compressed; reduced in flowing H 2  at 1000‹ C; sintered in H 2  at 1700‹ C.; cut into blanks by spark erosion and polished; electroplated with Pt; heated at 1300‹ C. to diffuse the Pt and anneal; then heated at 1700‹ C. in benzene and H 2  to form a Mo 2 C layer between the Pt layer and Mo-La 2 O 3  substrate: the last step may be carried out before the Pt plating. Alternatively the initial mixture may contain 0À5% Pt and the plating step omitted. The cathodes contain 0-05 to 10% Y, La or Th and 0À01 to 5% Pd, Pt, Rh or Ru. The cathode may be drawn into a wire.
Patent GB-939097-A (GB)
Title: Coating fabrics
Inventor: PENNING ERNST
IPC: B32B27/00
Filed: 1961-12-06
Abstract: 939,097. Coated fabrics. BADISCHE ANILIN- & SODA-FABRIK A.G. Dec. 6, 1961 [Dec. 7, 1960], No. 43649/61. Class 140. Fabrics, especially fabrics of man-made fibres, such as a polycaprolactam fabric, are coated by the application thereto of a solution in a volatile solvent of (a) at least one copolymer of a mixture of (i) at least one unsaturated polymerizable compound containing one or more hydroxyl groups, and (ii) at least one other unsaturated polymerizable compound and (b) at least one polyisocyanate, the solvent is evaporated and the copolymer and polyisocyanate are cross-linked by heating. At least one of the unsaturated polymerizable compounds (i) may be a polymerizable ester of a carboxylic acid which still contains a hydroxyl group, e.g. a partial ester of acrylic or methacrylic acid with a polyhydric alcohol, such as partial esters of butane-1,4-diol-monoacrylate, pentane - 1,4 - diol - monoacrylate and ethylene glycol monomethacrylate. Especially suitable components for copolymerization with these partial esters are acrylic and methacrylic acid esters of alcohols with 1 to 4 carbon atoms, e.g. butyl acrylate, methyl methacrylate, or vinyl esters, e.g. vinyl acetate or propionate. Component (a) may be prepared by polymerization of monomer mixtures containing 0.5 to 10% of monomer (i). The proportion of component (b) may be 0.5 to 10% by weight of component (a). Polyisocyanates specified are the reaction products of polyhydric alcohols with toluylene polyisocyanates which have an excess of reactive isocyanate groups, and di-isocyanates such as hexamethylene-, 1,4-phenylene-, toluylene- or naphthalene-1,5-di-isocyanates. Heating may be carried out at a temperature between 60‹ and 160‹ C., especially between 90‹ and 150‹ C. The solution used for coating may have a solids content between 30 and 70%. A second coating of different composition, e.g. a silicone resin or a modified urea resin, may be applied to the first coating.
Patent GB-1270951-A (GB)
Title: Improvements in gas turbine jet propulsion engines
Inventor: NEEDHAM PETER RICHARD
IPC: F02K1/74
Filed: 1968-09-14
Abstract: 1,270,951. Thrust deflectors. ROLLS ROYCE Ltd. 12 Sept., 1969 [14 Sept., 1968], No. 43822/68. Heading B7G. [Also in Division F1] A gas turbine ducted fan jet propulsion engine for an aircraft comprises a fan 20 driven by a turbine 13 and means consisting of a ring of inlet guide vanes 24 for closing off the gas flow through the turbine 13, together with simultaneously opening outlets 25 in the engine casing out of which the gases, which normally pass through the turbine 13, are deflected by means of a cascade of vanes 26. In addition to the ducted fan arrangement, there is incorporated a by-pass duct 10, along which air from a lowpressure compressor 1 flows to a mixing device 12. The guide vanes 24 are mounted for rotation about their longitudinal axes by means of a conventionally operated actuating mechanism 30 (Figs. 2, 3, not shown) which also actuates doors 27 for the outlets 25. The actuator 30 causes longitudinal movement of an actuator rod (31) connected by one set of pivoted levers (32, 33) to the doors 27, and by another set (34, 35) to the inlet vanes 24, so that movement of the rod simultaneously opens the doors 27 and turns the guide vanes to block the flow through turbine 13, whereupon the fan 20 will rotate only as a result of airflow caused by forward movement of the aircraft. In the above embodiment, the fan can be fitted as an additional complete unit. Alternatively the fan can be a front fan rather than an aft fan, and the engine need not be of the bypass type. Separate actuating mechanisms may be used to pivot the vanes 24 independently of the doors 27 in order to have control over the fan speed, and doors 27 may be replaced by a pivotable cascade 26.
Patent GB-440567-A (GB)
IPC: G03C7/14
Abstract: 440,567. Colour photography. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.- Ges.; Frankfort-on-Main, Germany) July 2, 1934, No. 19468. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 31, 1934.] [Classes 98 (i) and 98 (ii)] In printing a lenticular original V by contact on to another lenticular film K, the films are placed with their lenticles in contact, and the image of a uniformly illuminated plane M is projected on to them as by a lens or lens system O, in which may be provided a slot diaphragm extending perpendicular to the lenticles and adjustable as to length by slides B. It is stated that best results are obtained when the apparent length of the slot when viewed from the film gate is equal to the apparent breadth of the filter used in taking the original film. The plane M may be a plate of ground or opal glass, illuminated from the back as by a number of closely-arranged lamps W of the kind known under the Registered Trade Mark " Linolite," or by reflection. The image of the plane is focused unsharply on the films V, K. The invention may be used in the systems described in Specifications 417,020 and 417,096. Specifications 356,701 and 364,559 also are referred to.
Patent GB-1516190-A (GB)
Title: Wideband transistor amplifier
IPC: H03F1/02
Filed: 1975-10-27
Abstract: 1516190 Transistor amplifiers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 27 Oct 1975 [27 Jan 1975] 44108/75 Heading H3T A wide-band transistor amplifier for low dissipation e.g. in integrated form, comprises a plurality of stages 1, 2, 3 etc., each stage comprising a first transistor T 1  with current feedback, directly connected to a second transistor T 2  with voltage feedback, both transistors being in commonemitter connection, with collector resistors R c1 , R c2  respectively and feedback resistors R e , R f , respectively, the emitter-collector paths of the transistors T 2  in each stage being connected in series in a current supply path P 1  P<SP>1</SP> 1 , and the emitter-collector paths of the transistors T, being connected alternately in either a second or a third series path P 2 P<SP>1</SP> 2 , P 3 P<SP>1</SP> 3  respectively, the said three paths being connected through resistors 22, 23, 24, 26 in parallel between two supply terminals 21, 25, the first supply path being coupled with the second and third paths through current distribution resistors R d , the emitter supply terminals 11,14 of each stage being connected to a reference potential, e.g. earth, by capacitors C e , C d  respectively, the input terminal of the amplifier being the base terminal 13 of T 1  of the first stage and the output terminal being the collector 16 of the last stage. The frequency response of the amplifier may be shaped, e.g. for use as a repeater, by making C e  small compared with C d  and designing the impedance of the series combination of R e  with C e  and R d  in parallel to produce a required gain/frequency characteristic, Figs. 4, 5 (not shown). Undesired feedback round a loop such as stage 3, emitter of T 1 -stage 1, base of T 2 -stage 2, base of T 1 -stage 2, collector of T 2 -stage 3, base of T 1 , may be eliminated by inserting a resistor (27), Fig. 6 (not shown), connected to a decoupling capacitor (C d ) between stages 3 and 1.