baber/WOPTO huggingface dataset:
Patent GB-856804-A (GB)
Title: Heterocyclic vat dyestuffs
Filed: 1956-12-24
Abstract: The invention comprises multi-component mixtures of vat dyestuffs having the formulae:  <FORM:0856804/IV (c)/1> <FORM:0856804/IV (c)/2> <FORM:0856804/IV (c)/3> <FORM:0856804/IV (c)/4> where R is an aromatic or heterocyclic radical, n has a value of 1 or 2 and each of the -NH-groups may occupy one or other of the two a  positions in the naphthoquinone nucleus to which it is attached.  The dyestuffs are made by reacting an acylating agent derived from an aromatic or heterocyclic mono- or dicarboxilic acid with a mixture of compounds of the above formulae wherein the R-CO- groups are replaced by hydrogen atoms.  The dyestuffs dye cotton from an alkaline hydrosulphite vat orange and brown shades. Specification 835,908 is referred to.
Patent GB-839258-A (GB)
Title: Improvements in pulse responsive electric relays
IPC: H01H51/32
Filed: 1956-12-27
Abstract: 839,258. Electromagnetic relays. GENERAL ELECTRIC CO. Dec. 27, 1956 [Dec. 28, 1955], No. 39324/56. Class 38 (5). A relay responsive to pulses of electrical oscillations, the oscillations having a predetermined frequency (e.g. 600 c.p.s.) and the pulses having a predetermined repetition frequency (e.g. one pulse/sec.) comprises a magnetic member 14 pivoted at 15 and biased clockwise by a spring 22 into the position shown. An arm 16 on the member 14 carries a contact 17 and a magnetic piece 20, the moving system being mechanically resonant at the pulse repetition frequency. A magnet core 23 is energized by a coil 24 connected across the supply 26, 27 through a condenser 25, the coil and condenser forming a series resonant circuit tuned to the oscillation frequency, whereby on receipt of the correct pulses the arm 16 swings to and fro with ever increasing amplitude until the contact 17 engages a spring- mounted contact 18 and the piece 20 is held by a permanent magnet 21. The contacts 17, 18 remain closed to energize a load 28 until the arm 16 is manually reset. In the contactclosed position the member 14 has swung beyond its position of maximum flux linkage with the core 23 and thus the contacts cannot be closed by a non-pulsating alternating current. Three to ten pulses may be necessary to close the contacts and to prevent undesired contact closure by a single high amplitude pulse a further coil 30 is provided connected to a glow discharge device 31. The coils 24, 30 function as an autotransformer the total voltage thereacross causing the device 31 to conduct for pulses having a high amplitude whereby the current through coil 24 is limited; further, the flux produced by the coil 30 opposes that of the coil 24. In a modification (not shown) the members 17, 20 are mounted on the underside of the arm 16 and the members 18, 21 are positioned below the arm, the contacts being closed after receipt of the necessary number of pulses to swing the arm sufficiently far in a clockwise direction beyond the position shown under the action of the spring 22.
Patent GB-1090017-A (GB)
Title: Stabilized halogen-containing resin composition
IPC: C08K5/57
Filed: 1966-09-02
Abstract: In a metal organic salt stabilized halogen-containing resin 5-60% by weight (calculated as metal) of the stabilizer is a metal salt of a trialkylacetic acid, RR1R11CCOOH in which the R groups are alkyl having a total of 3-18 carbons.  The metal may be Li, K, Na, Mg, Ca, Sr, Ba, Zn, Cd, Sn, Sb or Pb or in the case of Sn, Sb or Pb a hydrocarbon derivative thereof. In an example, a P.V.C. composition contains dioctyl phthalate, epoxidized soya bean oil, stearic acid, diphenyl isooctyl phosphite, oleic acid, butyl carbitol and barium nonyl phenate, cadmium naphthenate-benzoate or cadmium di-(neooctanoate), with zinc di-(neooctanoate). Application to vinylidene chloride polymers and its copolymers with vinyl chloride is also mentioned.
Patent GB-862334-A (GB)
Title: Improvements in or relating to gas turbine jet propulsion engines
Inventor: COLLEY ROWAN HERBERT
IPC: F02K1/15
Filed: 1958-12-05
Abstract: 862,334. Clutch control. ROLLS-ROYCE Ltd. Nov. 20,1959 [Dec. 5, 1958], No. 39371/58. Class 80 (2). [Also in Group XXVI] A two-shaft gas turbine jet propulsion has the speed ratio of the two rotor shafts maintained constant by variation of the effective area of the propelling nozzle. The invention is described with reference to a gas turbine jet propulsion engine having high and low pressure compressors driven through independent shafts by high and low pressure turbines which discharge through a variable area nozzle formed by flap members adapted to swing radially on the end of the jet pipe. The speed of the high pressure rotor is controlled by controlling the fuel supply to the combustion equipment and by controlling the speed of the low pressure rotor by controlling its speed relative to that of the high pressure rotor. The low pressure rotor drives through a hollow shaft 24 and gearing 26b a sun gear 26. The high pressure rotor drives through a shaft 25 and gearing 27b a sun gear 27. The gears 26, 27 rotate in opposite directions and drive planet gears 28. The ratios of the gears 26b, 27b are selected so that at the predetermined ratio of the speeds of the two rotors, the gears 27, 28 rotate in opposite directions at the same speed. When the speeds vary from the predetermined ratio, the planet carrier 29 rotates and drives a shaft 30 connected through a clutch mechanism 31 to a shaft 45 operating the variable area propelling nozzle. Variation of this area alters the back pressure on the low pressure turbine and so controls the speed of the low pressure turbine that the predetermined ratio is restored. The clutch 31 comprises an input shaft 32 connected to a pair of clutch plates 35, 43 by two free-wheel mechanisms arranged to drive in opposite directions. The clutch plate 35 is sandwiched between a flange 37a and a member 36 by a spring 40. The clutch plate 43 is sandwiched between a flange 37c and a member 44 by a spring 40a. The flanges 37a, 37c are carried by a sleeve 37 having a screw-thread 37b which mates with a thread on a braking disc 38. The disc 38 has splines 38a which engages splines 39a of a fixed outer casing 39. If the shaft 30 is driven in the direction of the arrow 46, the shaft 32 rotates in the same direction and a drive transmitted through sleeve 37 and clutch 42 to output shaft 45. As the sleeve 37 is rotated the disc 38 will move along the screw-thread 37b until it abuts the flange 36a.. This will compress the springs 40 and allow the clutch 34 to slip so that no further drive is transmitted to the shaft 45. If the drive is now reversed, clutch 42 will operate and drive shaft 45 until the braking disc 38 abuts against the member 44.
Patent GB-954394-A (GB)
Title: Welding of wires and rods to sheet metal
IPC: B23K11/00
Filed: 1961-11-04
Abstract: 954,394. Making trays; welding by pressure. W. CLARK. Feb. 4, 1963 [Nov. 4, 1961], No. 39571/61. Headings B3A and B3R. In welding a wire to a sheet metal member, a strip of the member is folded over to form two layers, the wire is laid on one of the layers and current and pressure are applied so that the wire melts through the one layer and becomes welded to the other layer. In making a tray, four separate members are welded at the corners or as shown two L-shaped members 10 are welded at diagonally opposite corners to form the walls of the tray, the lower edge of each wall is folded over to form an upper layer 16 and a lower layer 15, a base formed of spot welded wires 17, 18 is placed with the wire ends on the layers 16 and electrodes 20, 20 are applied to each wire end and lower layer. The wires melt through the upper layer and weld to the lower layer. The electrodes may be shaped to additionally weld the upper layer to the lower layer. Alternatively the wires may rest against the lower layer 15 or the free edge of the flange may be folded on the underside of the tray.
Patent GB-396907-A (GB)
Abstract: 396,907. Bevels. AHOLA, H., Portland, Oregon, U.S.A. June 8, 1932, No. 16175. [Class 97 (iii).] A slotted blade is slidably and pivotally mounted on a data plate having an integral straight edge and an arm is rigidly mounted on the slotted blade to form a right-angle therewith. In the form shown, the straight edge comprises an extended flange 2 on the data plate 1, a further shorter flange 3 being provided to form with a spaced strip 4 a slot for the reception of the slotted blade 12 and arm 16 when not in use. Mounted on a pivot bolt 8 at the centre of the plate 1 are a lock nut 10 ; a washer 15 ; the arm 16 having a flange 18, a shoulder 19, a pair of notches 20, and a pair of square holes 21 ; the blade 12 slotted at 13 ; a washer 22 having lugs 23 adapted to project through the slot 13 and engage either the notches 20 or holes 21 according as the arm 16 is being maintained at right-angles to the blade 12 or packed adjacent thereto ; and on the reverse side of the plate 1 a radial guide arm 24 having a turned-up end 27 with notches 28 in which run the sides of the slot 13. The arrangement is such that the arm 16 may be maintained at right-angles to the blade 12 whilst the latter pivots around the bolt 8 or moves longitudinally by means of the slot 13. A shoe or shoes 29 may be arranged to slide in the slot 13 and/or a slot 25 in the arm 24 to assist in setting the arm 12 in line with one or other of a number of recesses 33 in the data plate 1.
Patent GB-1550080-A (GB)
Title: Regulating the flow of fluids in a pipe
IPC: F16L55/04
Filed: 1977-09-23
Abstract: To reduce pressure surges when conveying foodstuffs of the dairy industry, especially milk and yoghurt, a pressure surge compensator (7) is inserted in the feed pipe (2) of a packaging machine and an easily extensible rubber tube (15) is arranged in the tubular casing (14) of the said compensator (7). The rubber tube (15) which is clamped in flanges (16) forms the continuation of the feed pipe (2) and is surrounded by a limiting pipe (20) in order to limit the volume. The said limiting pipe (20) is made of metal and is provided with numerous perforations to permit the passage of air. When a pressure surge occurs, the rubber tube (15) expands (see right half of the figure) and the pressure surge is equalised by a counterpressure prevailing in the annular space (13), which counterpressure may be obtained by means of a compressed air pipe (21), for example. The pressure prevailing in the pipe (21) may be varied by means of a pressure regulator inserted upstream. This device can be cleaned and sterilised in an uncomplicated and simple manner, and it does not take up much space. <IMAGE>
Patent GB-1187764-A (GB)
Title: Lining Hoses
Inventor: LOMBARDI DENIS
IPC: B05D7/22
Filed: 1966-09-06
Abstract: 1,187,764. Lining pipes. REVERTEX Ltd. 26 July, 1967 [6 Sept., 1966], No. 39798/66. Heading B2L. Apparatus for lining a hose pipe with latex comprises a pipe 2 and disc 5 between which the latex passes under pressure as a substantially continuous and non-turbulent film from the space between the tube and the disc. The latex flows in through a feed pipe 10 and the apparatus is moved upwardly through the hose guided by flexible washers 7. In a modification the latex is contained in a reservoir which is moved through the pipe and from which it is forced by air under pressure.
Patent GB-1182554-A (GB)
Title: Process for Obtaining Highly Purified Phosphatidylcholine
IPC: C07F9/10
Filed: 1968-08-20
Abstract: 1,182,554. Phosphatidylcholine preparation. A. NATTERMANN & CIE. G.m.b.H. 20 Aug., 1968 [21 Aug., 1967 (2)], No. 39836/68. Heading C2C. Phosphatidylcholine having a high content of essential fatty acids is obtained from vegetable lecithins by dissolving a crude phosphatidecontaining oil in ethyl acetate and/or a dichlorinated hydrocarbon having 1 to 4 carbon atoms, treating the resulting solution with at least 5 times as much aluminium oxide by weight (based on the content of crude phosphatide in the solution), separating the aluminium oxide and eluting the phosphatidylcholine therefrom by means of an alcohol. The solution of the crude phosphatide-containing oil is preferably charged on to an aluminium oxide column, and before elution with the alcohol the aluminium oxide is preferably washed with one or more of the solvents specified for use in forming the solution, and this solvent may contain 2 to 6% by volume of an alcohol. In order to protect the unsaturated fatty acids of the phosphatides, it is advisable to work in the absence of light and air, and if appropriate, an antioxidant, e.g. tocopherol may be added in small amounts when dissolving the crude phosphatide.
Patent GB-1016072-A (GB)
Title: Electrophotographic recording process
Inventor: YELLIN WILBUR
IPC: G03G9/12
Filed: 1961-11-08
Abstract: 1,016,072. Electrophotographic recording using liquid developers. GENERAL ANILINE & FILM CORPORATION. Nov. 8, 1961 [Nov. 14, 1960], No. 40024/61. Heading G2H. An electrophotographic recording process comprises exposing to light a negatively charged photoconductive plate and developing the latent electrostatic image so produced with a liquid developer composition comprising a dispersion in an insulating liquid of finely divided opaque solid pigment particles coated with a positively charged synthetic resin selected from polyvinylamine, polyvinyl carbaxolne, polyvinyl pyrollidone, polystyrene, a butadiene-styrene copolymer, a styreneacrylonitrile copolymer in which styrene units predominate, C 8  to C 20  alkyl acrylate, methacrylate or α-C 8  to C 20  alkyl acrylate polymers and copolymers, and a polyvinyl methyl ether-maleic anhydride copolymer. Preferably the pigment/ resin ratio is from 10 :1 to 1:1:5. Typically a ZnO-in-resin electrophotographic paper negatively charged and exposed to give a latent electrostatic image is developed with a dispersion in 1:2: 2-trichloro-1 : 1: 2-trifluoroethane of a toluene-thinned paste formed by milling in a mixture in toluene containing 10% by weight of a 15:85 butadiene-styrene copolymer and 20% by weight of a blue pigment. Other milling and dispersing liquids having a resistivity of at least 10<SP>9</SP> ohm-cms mentioned as suitable are xylene, mesitylene, benzene, carbon tetrachloride, chloroform, methyl chloroform, trichloroethylene, perchloro - ethylene, trichloromonofluoromethane, a mixture of both the tetrachlorodifluoroethanes, petroleum ether, kerosene, pentane, hexane, heptane, cyclopentane, and cyclohexane. Numerous suitable pigments are mentioned. Reference has been directed by the Comptroller to Specification 835, 044.
Patent GB-1486202-A (GB)
Title: Ladders
IPC: E06C1/52
Filed: 1975-11-19
Abstract: 1486202 Extending ladder M L AVIATION CO Ltd 19 Nov 1975 [16 Sept 1974] 40250/74 Heading E1S An extending ladder of the suspension type comprises rungs 5 connected to articulated rigid links comprising sub-links 8, 15 provided with cooperating pressure pads 13, 14. by means of a member 4 to which the sub-links are pivoted, the links being foldable to a stacked configuration in which they lie substantially horizontally on top of one another in the plane of the rungs (see Fig. 2), the hinged joints between adjacent links including interlocks each comprising a cam 2 on the end of one link 15 in the form of a sectorshaped portion centred about the pivot point 3 of that end of the link and a co-operating cam follower 10 on the end of the adjacent link 8 which bears against the cam surface (10B, Fig. 2) to prevent rotation until the upper link 15 rotates to take the cam to a position (2A in Fig. 2) in which the cam follower is beyond the end of the sectorshaped portion and is allowed to move towards the pivot point 3 thus permitting turning movement of link 18 (Fig. 2) to the vertical position (as 8 in Fig. 1) in which position the link next above it is locked in the vertical position and cannot start to turn to a horizontal position until link 8 (Fig. 1) is substantially horizontal, the links being prevented from turning past the fully extended position by pressure pads 16, 12 which cooperate with pressure pad 11 on the intermediate member 4.
Patent GB-955589-A (GB)
Title: Electrical switch
IPC: H01H1/24
Filed: 1962-10-25
Abstract: 955,589. Cam-operated switches; retractive switches. WESTERN ELECTRIC CO. Inc. Oct. 25, 1962 [Nov. 7, 1961], No. 40360/62. Heading H2B. A change-over switch comprises an insulating base 25 having a slot 36 for a sliding actuator 35 and a recess 24 for wire contacts 10, 15 and 20, for example, of palladium alloy, which are located between bosses 30 and 32 and secured by filling the space between the column of bosses 30 and the column of bosses 32 with a potting compound such as an epoxy resin. The U-shaped contacts 10 and 15 are pre-flexed such that their bights 12 and 16 tend to lie in the grooves 26a, 28a and 26b, 28b while the contact 20, which is bifurcated, is spaced slightly above them. A cover 50 carrying terminals 60 is located by pins 52 and fixed by fasteners passing through holes 56 and 58 which also serve to mount the switch. A pin 38 for operating the actuator 35 extends below the actuator into a slot 40 to limit the sliding movement and cover 50 retains the actuator in the slot 36 by cooperation with surfaces 48. Cams 42 serve to lift either contact 12 or 16 into engagement with contact 20 in the limit positions of actuator 35 and a make-before-break or break-- before-make action may be provided by the relative dimensions of cams 42 and the spacing of contacts 12 and 16. A fourth contact member may be added, generally parallel to contacts 12 and 16 but above the level of cams 42, on which contact 20 rests when not lifted by contacts 12 or 16 (Figs. 7 to 10, not shown); this provides a make-before-break relationship between the fourth contact, contact 20 and either contact 12 or 16, at the same time providing break-before-make between contacts 12, 16 and 20. In an alternative embodiment (Figs. 11 to 15, not shown), the switch is mounted on a printed-circuit board by providing longitudinal grooves in the sides of the actuator which accommodate the edges of an elongated rectangular notch in the board; the wire contacts are all straight in this embodiment, and the cams 42 are replaced by an indent. The actuator may be rotary instead of sliding (Fig. 16, not shown), and in this modification comprises a disc with a projection on its periphery to act in place of cams 42. The switches are inherently bi-stable, but the actuator may be biased towards one end of its travel to provide a retractive action.
Patent GB-1083733-A (GB)
Title: Balancing machine with electric balancing of residual moments
Inventor: KONIG FRITZ
IPC: G01M1/22
Filed: 1964-10-05
Abstract: 1,083,733. Measuring dynamic unbalance electrically. LOSENHAUSENWERK DUSSELDORFER MASCHINENBAU A. G. Oct. 5, 1964, No. 40527/64. Heading G1N. The dynamic unbalance of a rotor/as measured at two bearing planes by electromagnetic transducers is converted to components in two balancing planes by means of a network which solves the two equations using the standard designations shown in Fig. 1, each of the terms in the equations being treated as a quantity between 1 and 10, multiplied by the appropriate power of 10. As shown (Fig. 3), the measured voltage representing P I  is connected to terminals 1 and 3, and that representing P II  is connected to terminals 2 and 4. The P I  voltage at terminal 1 is fed through a decade multiplier switch 11 and a potentiometer 13 to an adding circuit, switch 11 being set to the appropriate power of 10 to bring the a/b ratio, which is set up on the slider of potentiometer 13 to between 1 and 10. The four decade switches 11, 21, 31, 41 are similarly set to reduce or amplify the different terms in the above equations by the appropriate power of 10, and the signals appearing at terminals 7 and 8, after the addition has been effected across resistors 6, represent P 1  and P 2  respectively, when multiplied by the appropriate power of 10. is Thus, if <SP>a</SP>/ b  = 0À5 and <SP>c</SP>/ b  = 150, the first equation Decade switch 11 is set to 10<SP>-3</SP> and the slider of potentiometer 13 set to 5, decade switch 21 is set to 1 and the sliders of potentiometer 23 set to 1À5, decade switch 31 set to 10<SP>-2</SP>, and the voltage at terminal 7 representing P 1  must be multiplied by 10<SP>2</SP>.
Patent GB-906206-A (GB)
Title: Improvements in or relating to travelling wave tubes
Inventor: ASH ERIC ALBERT
IPC: H01J23/36
Filed: 1959-11-30
Abstract: 906,206. Travelling-wave tubes. STANDARD TELEPHONES & CABLES Ltd. Nov. 30, 1959, No. 40545/59. Class 39 (1). In a travelling wave amplifier or backward wave oscillator the slow wave structure comprises a grating of two sets of intersecting wires, or of a zig-zag or a " brick wall " structure derived therefrom, stretched between two conducting side walls. In the first case there can be any number of intersections between the ends of the wires 4, 5 or they may intersect only at the ends, Fig. 2. The slow wave structure may be a zig-zag line 6, Fig. 7, supported by conductive stubs 9; the bends may be rounded and this line may be hollow for water cooling, Fig. 8 (not shown). By extending the stubs across the full width and connecting them at spaced points (staggered in successive rows) " brick wall"  structures can be formed as for example, Fig. 12 (not shown). All lines have strong spatial harmonics, but Fig. 2 has in addition a fundamental backward wave. The lines are extended half way across rectangular waveguide feeders which have impedance matching fins serving also as chokes, Fig. 15 (not shown). The conductive walls of the gratings may be parts of the metal tube envelope, the distance from the grating to the bottom or top of a side wall being > #g so as not to form a rectangular waveguide. Electron beams go above and below the grating. For backward wave oscillators the collector end of the grating is coated with lossy material. The gratings can be made by photo-etching.
Patent GB-922919-A (GB)
Title: Apparatus for laying a pipeline on the floor of a body of water
IPC: F16L1/24
Filed: 1961-11-13
Abstract: 922,919. Laying pipes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Nov. 13, 1961 [Nov. 14, 1960], No. 40565/61. Class 99(2). Apparatus for laying a pipeline 16 on the floor 35 of a body of water 13, comprises a pipe-laying barge 11, means 14 carried by the barge for supporting and guiding a portion of the pipeline, a tow cable 21 connected to the barge, and a number of buoyant pipeline supports 18 secured in fixed spaced relation to the cable for supporting the pipeline slidably for movement along a curve extending from the barge to the floor 35 when the barge is moved over the surface of the water. As shown, the pipeline is formed by welding together sections of pipe and discharged down a shoot 14, and the lower end of the cable 21 is secured either to the last buoyancy member 21a or a drag anchor 23 provided with a channel 24 through which the pipeline passes as the barge moves forward during pipe-laying operations. The supports 18 may comprise buoyancy tanks 26, Fig. 2, clamped to the cable 21 and having depending therefrom a saddle 25, and the latter may have rollers on which the pipe rests, or the buoyancy members may each consist of blocks of wood, cork or other buoyant material secured to metal rings supporting the pipeline and connected together by wires.