baber/WOPTO huggingface dataset:
Patent GB-691537-A (GB)
Title: Improvements in or relating to connections for pressure gauges
IPC: G01L19/00
Filed: 1950-07-21
Abstract: 691,537. Pressure gauges. GRANT, C. R. A., and PRESSURE GAUGES, Ltd. July 18, 1951 [July 21, 1950], No. 18297/50. Class 106 (ii). [Also in Group XXIX] In a gauge connection for connecting a pressure gauge to a gas pressure system, the gas pressure is transmitted to the gauge through a column of liquid in which there is interposed an obturating member, the obturating member being carried, in the event of failure of the gauge, to a position in which it closes, or substantially closes, the said connection. In Fig. 1 the obturating member is a piston 27 in a cylinder 11, the gas pressure acting through a port 23 on the liquid in a chamber 25, the liquid extending up the cylinder 11, coaxial with the chamber 25, to a pressure gauge mounted on a stem 10. The piston 27 is so dimensioned in relation to the cylinder 11 that it provides a restricted leakage path between the cylinder and the gauge, the spacing between the surfaces providing this restricted leakage path being not more than fifteen ten thousandths of an inch. Should the gauge fail, the piston 27 is carried upwards by the liquid until it engages a shoulder 13 to substantially close the connection. A valve controlled supply fitting 19 between the cylinder 11 and the pressure gauge enables liquid to be introduced to the connection. In a modification the liquid chamber 25 and the cylinder 11 are arranged side-by-side and are connected together at their lower ends. According to a further modification, Fig. 3, pipes 53 and 50 connected respectively to the gas pressure system and the cylinder 11 extend into a closed chamber 51 and communicate with said chamber through orifices 52, 54 in the tubes 50,.53 submerged in liquid in the chamber 51. Specification 670,344 is referred to.
Patent GB-931210-A (GB)
Title: An improved inflatable raft for use in transporting loads and adaptable for use in constructing ponto on-bridges and other floating devices
Inventor: DOWSETT EDWARD GEORGE
IPC: B63B7/08
Filed: 1961-05-19
Abstract: 931,210. Inflatable rafts. AIRBORNE INDUSTRIES Ltd., and W. E. PRETTY. March 13, 1962 [May 19, 1961], No. 18328/61. Class 113. A raft comprises inflatable buoyant bags 1 held closely together in parallel relation in a single plane by one or more lines A, B of rigid saddle members 2, each member being disposed saddle-wise over at least two adjacent bags and embracing them by a frame 10 connecting the ends of each saddle member and passing underneath the bags, and a rigid loadcarrying element 5 secured on top of each line (A and/or B) extending from end to end of the line. Each element 5 has at each end a hinged portion 6 constituting a loading ramp.
Patent GB-1206927-A (GB)
Title: Particulate nuclear fuels
IPC: G21C1/07
Filed: 1969-04-10
Abstract: 1,206,927. Treatment of spent fuel; reactors. GULF GENERAL ATOMIC Inc. 10 April, 1969 [25 April, 1968 (2)], No. 18344/69. Headings G6C and G6R. A reactor employs particulate fuel material comprising at least two groups, the particles of each group being coated with a fission product retention layer, that layer in one group being constituted by silicon carbide and in the other group by dense metal carbide or pyrocarbon which is less oxidation resistant than silicon carbide. Thus, after burnup in the reactor the two groups may be separated from each other, prior to chemical processing of the fuel, by subjecting the mixed particles to an oxidation process, this process causing removal of the dense metal carbide or pyrocarbon layer and reducing this group of fuel material to an ash or fine particle size whereas the silicon carbide layer is not removed and the particles of this group remain intact. Mechanical screening is then used to separate the two groups. Generally, the fuel material of the two groups would be different and require different chemical processing. In particular, one group comprises fissile fuel material in the form of uranium dicarbide and these particles are coated with a silicon carbide layer. The other group comprises primarily fertile material in the form of thoriumuranium dioxide or carbide and these particles are coated with a dense metal carbide or pyrocarbon layer. In both groups the fuel particles may have a layer of low density spongy pyrolytic carbon deposited directly on the fuel material and situated beneath the fission product retention layer. In one arrangement the silicon carbide layer is coated with a layer of dense pyrocarbon, this latter layer being removed in the oxidation process. The fuel particles may be loosely loaded into chambers of graphite block fuel elements or may be bonded together in those chambers by pitch. Alternatively, the fuel particles may be combined with a graphite matrix material and formed with pitch into a fuel body.
Patent GB-1144470-A (GB)
Title: Pulse amplifiers
Inventor: EUBANKS JOHN MCLAUGHLIN
IPC: H03K5/02
Filed: 1966-04-27
Abstract: 1,144,470. Transistor pulse amplifying circuits. WESTERN ELECTRIC CO. Inc. 27 April, 1966 [29 July, 1965], No. 18365/66. Heading H3T. A pulse amplifier comprising a plurality of emitter-follower transistors 10-13 connected in cascade, the connection between transistors comprising a transmission line 20-22, the output impedance of each transistor being equal to the characteristic impedance of the transmission line to which its output is connected, each transmission line having a propagation time greater than one half of the duration of the pulses to be amplified, the transistors being normally non-conducting but conducting in the presence of a pulse. A positive pulse from source 25 causes transistor 10 to conduct and a pulse of slightly less voltage to appear across resistor 15. This pulse is transmitted down line 20 to transistor 11, where there is a mismatch owing to the input impedance of a transistor in emitter-follower configuration being greater than the output impedance. A reflected pulse results and passes back up the line to transistor 10, which is now non-conducting, the input pulse having terminated. No further reflection occurs since resistor 15 is matched to the impedance of line 20. The reflection at the input of transistor 11 causes the voltage of the input pulse thereto to be approximately 1À5 times that of the input pulse of transistor 10. The loss of current caused by this transformation in each transmission line is absorbed by the current gain in the emitter-followers. The transmission lines may be coaxial cables, open lines, printed circuits or impedance networks.
Patent GB-1148976-A (GB)
Title: Process for the preparation of zinc oxide of high photosensitivity
Inventor: WEISBECK ROLAND
IPC: C01G9/02
Filed: 1967-04-21
Abstract: 1,148,976. Zinc oxide. AGFA-GEVAERT A.G. 21 April, 1967 [28 April, 1966], No. 18386/67. Addition to 1,084,062. Heading C1A. ZnO is produced by (a) Evaporating Zn; (b) Transporting the Zn vapour together with H 2  and/or CO axially into a combustion chamber; (c) Injecting excess O 2  or air tangentially into the combustion chamber through a pipe provided with a swivel baffle near its outlet, so that combustion of Zn is effected at 1500-2000‹ C. in a turbulent flame; (d) Injecting further O 2  or air radially from an annulus at the outlet of the combustion chamber; and (e) Thermally after-treating the ZnO at 500-900‹ C. The Zn may be evaporated into H 2  and/or CO with or without inert gases, at 900-1100‹ C. The combustion chamber may be a cylinder or cone and may have a water-cooled jacket. There may be several tangential pipes, each with a baffle, and several annular nozzle arrangements, one after the other. The annuli may have a plurality of small orifices on the inside or a continuous thin slit, and each may have different size orifices or operate at different pressures. The proportion of O 2  or air injected radially may be 5-30% of that injected tangentially. The after-treatment chamber may be a continuation of the combustion chamber, of larger cross-sectional area. The product is highly photoconductive and has a particle size of 0À1-1 mÁ.
Patent GB-107726-A (GB)
Title: Improvements in and relating to Steam Engines of the Double Cylinder Type.
Inventor: MCKEAN JOHN GRAVES
IPC: F01B17/04
Filed: 1916-12-27
Abstract: 107,726. McKean, J. G. Dec. 27, 1916. Exhaust, treating. - In two-cylinder engines having pistons working on cranks at ninety degrees, the exhaust is led to passages a', b<1> having non-return valves e and communicating through an ejector throat d with a common outlet c. The exhaust from one cylinder reduces the back pressure in the other cylinder.
Patent GB-478800-A (GB)
Title: Improvements in or relating to radio-receiving systems
IPC: H02H7/093
Filed: 1937-07-03
Abstract: 478,800. Valve circuits for wireless reception. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 3, 1937, No. 18565. Convention date, July 6, 1936. Drawings to Specification. [Class 40 (v)] The two radio-frequency amplifiers feeding a combined detector and A.V.C. rectifier are coupled aperiodically, the input circuit of the first and the output circuit of the second being tuned. Energy from the latter is fed back to the grid of the second valve for retroaction.
Patent GB-775774-A (GB)
Title: Apparatus for cutting oil grooves
IPC: B23B5/48
Filed: 1954-06-25
Abstract: 775,774. Screw-cutting lathes. MODERN MACHINE TOOLS, Ltd., and SHIPWAY, S. T. June 23, 1955 [June 25, 1954], No. 18646/54. Class 83 (3). Apparatus for making successive superimposed cuts to form helicoidal grooves in cylindrical workpieces, for example oil grooves, is of the kind having a cutting-tool reciprocated parallel to the rotating work and fed inwards for a cutting half-reciprocation, and withdrawn for the tool to clear the work during the return half-reciprocation, and is characterized by a single or multi-start screw coacting with a nut secured to the tool-holder, and interruptions in the screw and nut to allow the return movement, the arcuate extent of the nut-threads being less than the arcuate extent of the interruptions in the screw. The work, which may be an engine camshaft, is carried between centres 20, 21, Fig. 2, and has a series of coaxial bearing surfaces 23-26 on which it is desired to cut helical oilways of different pitches. The work is rotated by a driver 15 and the machine spindle drives a lead screw 48 through gearing. The screw has a number of threaded portions of the pitches required. Aligned interruptions 60, Fig. 3, are provided so that when these correspond with the arcuate nut members 56-58, Figs. 2 and 3, at the end of a cut, the tool carriers 39-41 are returned by springs 63, 67, 70 to the starting position for another cut. The tool-carriers are mounted parallel to the work on a dovetailed support 38, Fig. 3, protected from cuttings by a cover 77. The dovetail forms part of a transversely-adjustable slide 33 used for setting the tools. The latter slide is mounted on a further cross-slide 19 which is moved automatically, to withdraw the tools from the work at the end of a cut, and return them for a new cut, by a cam rotated from a back-shaft driven by the machine spindle.
Patent GB-986532-A (GB)
Title: Facsimile method
IPC: H04N1/58
Filed: 1962-05-15
Abstract: 986,532. Copying by scanning. TIME Inc. May 15, 1962 [May 16, 1961], No. 18667/62. Heading H4F. The invention relates to a modification of the facsimile method and apparatus described in Specification 986,534 in which provision is made for progressively attenuating the light from the auxiliary scanning area radially outwards of the axis thereof and within the cross-section thereof so as to reduce visibility of border zones produced at low density edges in a replica as a result of the modifying action of the signal derived from the auxiliary scanning area. The invention makes use of a variable transmissivity aperture, Fig. 10, comprised of a central aperture 320 of full transmissivity and surrounding areas 321 and 322 of progressively lower transmissivity. The arrangement may be constructed as shown in Fig. 9 of superposed apertured members 313, 310, 315, or may be produced by photographing such an assembly. Reference is made generally to apertures having linear and non-linear radial variations of transmissivity. The variable transmissivity aperture may be used in place of the illumination aperture (201, Fig. 2, not shown), the auxiliary photo-electric cell aperture (216, Fig. 2, not shown), or may be located between the picture drum and beam splitter. Reference is made to the replacement of both the illumination and photo-electric cell apertures. The construction of the aperture forms the subject of Specification 986,533. Specifications 765,443, 765,444, 794,201 and 827,865 also are referred to.
Patent GB-816785-A (GB)
Title: Internal combustion engine cylinder head
IPC: F02B19/14
Filed: 1957-06-13
Abstract: 816,785. Combustion chambers. FIAT, S.p.A. June 13, 1957 [July 12, 1956], No. 18717/57. Class 7(3) A combustion chamber 2 in the cylinder head, closed at the top by an exhaust valve seating in the port 3, is provided with an injector 6 having its axis 7 inclined at an angle of 15 degrees 30 feet to a plane perpendicular to the cylinder axis and at an angle b, Fig. 2, of 12 degrees to a plane 9 at right angles to the plane 10 through the centres of the inlet and exhaust valves parallel to the cylinder axis, the injector being arranged to produce four jets 13...16, Fig. 5, situated in a plane 17 at an angle of 11 degrees to a plane perpendicular to the cylinder axis. The inner jets 14, 15 are each at an angle of 15 degrees to the axis of symmetry of the jets and the outer jets 13. 16 are at angles of 45 degrees thereto. The combustion chamber is basically cylindrical in shape and its wall is recessed adjacent the injector. A formula is given for the distance of the point of conveyance of the fuel jets from the axis of the combustion chamber.
Patent GB-1034295-A (GB)
Title: Naphthindolizinedione carboxyarylamides
Inventor: INMAN ERIC RICHARD
IPC: C09D11/02
Filed: 1964-05-06
Abstract: The invention comprises naphth-[2,3-b]-indolizine - 6,11 - dione - 12 - carboxyaryl-amides of the formula <FORM:1034295/C4-C5/1> wherein X and Z are the same halogen and Y is the same or different halogen, or X and Z are the same or different halogen and Y is amino or alkanoylamino.  The halogen is preferably Br or Cl and the alkanoylamino group is preferably acetylamino or propionylamino.  The compounds are prepared by reacting (1) a naphthindolizine - 6,11 - dione - 12 - carboxylic acid halide with (a) a 3,5-dihalo-4-Y-aniline, (b) a 3,5 - dihalo - 1,4 - diamine, followed by acylation or (c) a 3,5-dihalo-4-nitro aniline, followed by reduction and acylation; (2) a naphindolizine - 6,11 - dione - 12 - carboxylic acid or ester thereof with a 3,5-dihalo-4-Y-aniline; (3) a 1,4-naphthoquinone compound, e.g. a 2,3-dihalo derivative, pyridine and (a) a 3,4,5-trisubstituted acetoacetanilide or (b) a 3,4,5-trisubstituted a -haloacetanilide.
Patent GB-849398-A (GB)
Title: Improvements in or relating to pneumatic actuators
IPC: F15B15/26
Filed: 1959-05-26
Abstract: 849,398. Pneumatic single-stroke apparatus. GENERAL MOTORS CORPORATION. May 26, 1959 [June 9, 1958], No. 17899/59. Class 8(2). A single-acting compressed air actuated jack comprises a cylinder 10 divided into chambers 54, 56 by a piston 52 having its rod 64 serving to reduce the effective cross-sectional area of chamber 56 to which compressed air is admitted through a throttle valve 46 and cylinder port 50 and from thence through a passage 82 in the piston 52 on fracture of a glass plate 84 fracture of a glass plate 84 effected by a push rod 86. In operation the throttle valve 46 is closed after chamber 56 is changed to a predetermined pressure and the working stroke is initiated by breaking the glass sealing plate 84. The piston is locked at the end of its stroke by the expansion of split rings 60, 62 carried in a recess 58 of the piston into a groove 16 cut in the end of the cylinder.
Patent GB-960513-A (GB)
Title: Improvements in lumber and timber sorting machinery
IPC: B65G47/94
Filed: 1962-05-16
Abstract: 960,513. Conveyers. SATEKO OY. May 16, 1962 [May 23, 1961], No. 18844/62. Heading B8A. A discharge device for an endless conveyer comprising parallel rails 1 along which spaced supports 2a, 2b slide, under the action of a moving chain (not shown), carrying a log (see Fig. 3). At each discharge station the rails 1 are replaced by a pair of rails 4. Each rail 4 (Fig. 1) is mounted on axles 7 by rods 5. A trip lever 9 is mounted on an axle 8 which also carries a draw-lever 10 attached by a chain 11 to the bushing of the rear supporting rod 5. After the leading support 2a has passed the trip lever 9 (which is normally below the level of the rail 4) an electromagnet 12 is switched on to attract a hinged lever 13 which turns the draw lever 10 and thus the trip lever 9 into the position shown in broken lines in Fig. 1. In this position the trip lever is engaged by the following support 2b and rotated into the dot-dash position shown which, through the action of the chain 11, rotates the rods 5 so as to lower the rail 4 into the broken line position shown. The log on the supports 2a, 2b is thus dumped sideways. The following support 2b engages a catch lever 14 (now in the broken line position in Fig. 1) and resets the device. There may be a trip mechanism in respect of each rail 4 (as shown) for discharge to either side of the conveyer or a single mechanism for discharge to one side only.
Patent GB-685233-A (GB)
Title: Improvements in vertically-sliding counter-balanced windows
Inventor: OLDHAM FRED ALEXANDER MAUGHAM
IPC: E05F11/38
Filed: 1950-07-28
Abstract: 685,233. Sliding windows. HALLAM, SLEIGH and CHESTON, Ltd. June 7, 1951 [July 28, 1950], No. 18861/50. Class 20(iii) A vertically sliding window 1 is counterbalanced by a roller 7 or part carried by a slide 9, 28 which is housed within a member 10, 29 at the top of the window panel and maintained by a spring 12, and 31 in engagement with a curved or inclined stationary track 6 at the side of the body in which the window slides, the roller, &c. moving over the track when the window is raised or lowered and the track being so shaped and positioned that a lifting force is exerted on the roller to oppose the weight of the window at different positions of adjustment. The panel 1, e.g. of a public service vehicle, is movable on guide ribs 2 on the sides 3 of the fixed frame. In the construction shown in Figs. 3 and 4 the tracks which diverge downwardly comprise tapered metal plates 4 parallel to the plane of the panel having an inner edge of parabolic curvature and formed with a flange 5 the outer face of which forms the track. Each roller 7 rotates about a pin 8 projecting from a slide bar 9 housed in a horizontal tube 10 integral with the top bar 11, and the aligned slide bars are connected by a tension spring 12, or may be fitted with separate tension or compression springs. In an alternative arrangement the rollers are urged outwardly by a single or separate compression springs to engage the inner surfaces of the guide tracks which diverge upwardly, liners being provided to space the springs from the wall of the tube in which they are contained. In the embodiment shown in Fig. 8, the panel moves into a well 27, the grooved rollers 7 being covered by slide members 28 slidable in a tube 29 and urged by compression springs 31 into engagement with the parabolic tracks 6. If desired a curved track may be provided on one side only, the other track being vertical, the rollers may be replaced by shoes, and the slide member may be housed in guides other than tubes.
Patent GB-1122685-A (GB)
Title: Joints between formwork panels
Inventor: CADMAN KENNETH JOHN
IPC: E04G17/04
Filed: 1966-04-29
Abstract: 1,122,685. Wall shuttering. RAPID METAL DEVELOPMENTS Ltd. and TERSONS Ltd. 25 July, 1967 [29 April, 1966], No. 18923/66. Heading E1S. [Also in Division F2] Wall shutters 11 are connected together via angle-sectioned members 12, 13 attached to, or adjacent to the edges thereof, which are firstly loosely bolted together, then tack welded along their free edges 12b, 13b, the nuts 15 then being tightened up. I-section walings may be employed, spaced apart vertically, which walings are connected to the flanges 12a, 13a of the angle-section members by bolts which are passed through bearing plates or washers running between vertically adjacent walings, and are screwed into nuts welded to said flanges 12a, 13a.
Patent GB-967892-A (GB)
Title: Improvements in or relating to the production of surface-coated papers using brightening agents
Inventor: PATTYN HENDRIK ADOLF
IPC: G03C1/775
Filed: 1959-05-19
Abstract: The brightness of white surface-coated paper is enhanced by incorporating in the paper support or in one or more surface coatings thereof or in both an anionic fluorescent compound or compounds and poly(vinyl-2-oxazolidone).  The fluorescent compound may be an amino-stilbene of the general formula <FORM:0967892/C4-C5/1> where Q and Q1 are each <FORM:0967892/C4-C5/2> or R5-CO-, R3, R4 and R5 are each hydrogen, halogen, hydroxyl, amino or any of a wide variety of organic radicals linked directly or through O, N or S (examples given in the Specification) and may be the same or different from one another and R1 and R2 are each a water-solubilizin group, e.g. sulpho or carboxyl or a salt thereof, or if at least one of the groups R3, R4 and R5 is anionic may be hydrogen.  The fluorescent compound and the poly(vinyl-2-oxazolidone) may be incorporated separately or may first be reacted to form an addition compound which is then incorporated.  In the former case they may be present in the same layer or in different layers of the coated paper, or paper, e.g. a photographic paper, having poly(vinyl-2-oxazolidone) incorporated in it or in a coating layer, may be treated with a solution, e.g. a developing, stop or fixing bath, containing the fluorescent compound. The paper support or the coating or both may also include poly(vinylpyrrolidone) or a copolymer of vinylpyrrolidone and vinyl acetate or both.  Specification 884,736 also is referred to.ALSO:The brightness of white surface-coated paper is enhanced by incorporating in the paper support or in one or more surface coatings thereof or in both an anionic fluorescent compound or compounds and poly(vinyl-2-oxazolidone).  The fluorescent compound may be an amino-stilbene of the general formula: <FORM:0967892/D1-D2/1> where Q and Q1 are each <FORM:0967892/D1-D2/2> or R5 -CO-, R3, R4 and R5 are each hydrogen, halogen, hydroxyl, amino or any of a wide variety of organic radicals linked directly or through O, N or S, (examples given in the Specification) and may be the same or different from one another and R1 and R2 are each a water-solubilizing group, e.g. sulpho or carboxyl or a salt thereof, or if at least one of the groups R3, R4 and R5 is anionic may be hydrogen.  The fluorescent compound and the poly(vinyl-2-oxazolidone) may be incorporated separately or may first be reacted to form an addition compound which is then incorporated.  In the former case they may be present in the same layer or in different layers of the coated paper, or paper, e.g. a photographic paper, having poly(vinyl-2-oxagolidone) incorporated in it or in a coating layer, may be treated with a solution, e.g. a developing, stop or fixing bath, containing the fluorescent compound. The paper support or the coating or both may also include polyvinylpyrrolidone or a copolymer of vinylpyrrolidone and the vinyl acetate or both.  Specification 884,736 also is referred to.