baber/WOPTO huggingface dataset:
Patent GB-183879-A (GB)
Title: Improvements in and relating to wireless signalling systems and apparatus therefor
IPC: H04B1/16
Filed: 1921-02-07
Abstract: 183,879. British Thomson - Houston Co., Ltd., (General Electric Co.). Feb. 7, 1921. Thermionic detectors; heterodyne and homodyne receiving systems.-An apparatus for detecting the received currents comprises a triode valve with its circuits arranged to produce negative resistance effects and an enveloping coil producing a magnetic field across the electron stream, the coil circuit and the anode-cathode valve circuit being traversed one by the signalling current and tho other by locally-produced current of the same or different frequency, thus producing an indication in a telephone or other instrument connected in the valve circuit. Fig. 1 shows one form of the apparatus, in which signalling currents received in the tuned circuit 11, 12 are applied across the anode 4 and cathode 2 of a valve of the kind described in Specification 130,400. The anode-cathode circuit also includes a battery 7 and a telephone or other indicator 13. The grid 3 is given a fixed positive potential by a battery 6. Surrounding the valve are a direct current coil 15 and a coil 8 supplied by a source 14 of oscillations differing in frequency from that of the signal waves by an audible frequency. A beat note is thus produced in the telephone 13. The negative resistance of the valve neutralizes the losses in the aerial and coupled circuit. The coil 15 may be omitted, and the coil 8 may be energized by oscillations of a frequency equal to, or slightly differing from, half that of the signalling current. In the case of equality, a directcurrent indicator may replace the telephone. In the modification shown in Fig. 2, the negativeresistance valve acts as the generator of the local oscillations by virtue of the tuned circuit 18, 19 connected between its anode 4 and cathode 2. The magnetizing-coil 20 is connected across the tuned receiving-circuit 11, 12 or may be connected directly in the aerial. A constant magnetic field is produced by current supplied to the coil 20 by a battery 21. A choke coil 23 prevents the high frequency from passing through the battery, and a condenser 22 cuts off the battery current from the coil 11. The telephone 13 is connected in the anode-cathode circuit of the valve, and is shunted by a condenser.
Patent GB-300056-A (GB)
Title: Improvements in floors and walls
IPC: E04B5/12
Filed: 1928-02-13
Abstract: 300,056. Nocker, K. Feb. 13, 1928. Joist floors; girder floors; walls.-Floors and walls are formed by placing together wooden or concrete beams inclined against each other and with the edges bevelled at right angles to provide flat abutments and receive the flooring and ceiling. Fig. 1 wooden beams and Fig. 2 concrete beams. Triangular strutting blocks b may be placed at intervals between the beams and at the ends. Pairs of beams may be connected together in this manner before erection. Battens may be placed in the upper joints, and triangular fillets in the valleys. The concrete beams are provided with integral struts b<1> and rectangular end seats. In the modification shown in Figs. 6 and 7, metal bands k, k<1> are passed alternately over and under the beams, blocks h are fixed in the valleys, and metal bands i are fixed on the abutting faces.
Patent GB-578321-A (GB)
Title: Improvements in or relating to pressure regulating devices for fluid supply systems
IPC: F15B1/027
Filed: 1944-03-10
Abstract: 578,321. Fluid - pressure servomotors. AUTOMOTIVE PRODUCTS CO., Ltd., and TALBOYS, D. C. March 10, 1944. No. 4535. [Class 135] A pump 14 delivers liquid past a non-return valve 37 to an accumulator 21 and a byepass valve 25 is arranged to open the pump delivery to exhaust when the pressure in the accumulator exceeds a predetermined valve and close it when the pressure falls to a lower predetermined value. The valve 25 is actuated by a piston 31, the pressure to the cylinder 30 being controlled by two valves 70 and 62. The pressure in the accumulator 21 acts on the valve 70 and at a predetermined value lifts it against the spring loading 51. Liquid flows between a restricted space between the thrust rod 67 and its bore and the valve 62 is closed and pressure is built up in the cylinder 30 to open the valve 25. The valve seating 62 is larger than the valve seating 70 and when the pressure falls below that required to open the valve 70, the valve 62 opens to connect cylinder 30 to exhaust and valve 70 is closed.
Patent GB-1522453-A (GB)
Title: Slant axis rotary internal combustion engines
IPC: F01C3/06
Filed: 1977-02-04
Abstract: 1522453 Rotary positive-displacement fluidmachines CATERPILLAR TRACTOR CO 4 Feb 1977 [24 May 1976] 4645/77 Heading F1F A piston, or rotor, for an I.C. engine of the nutating-piston type has a part-spherical hub encircled by an annular flange with diametricallyopposed portions in a plane containing the hub axis whose centre-lines 70, 72 are at an angle of less 180 degrees to each other e.g. 170 or 175 degrees, on the side thereof farthest from a ring gear 42 fixed to the hub.
Patent GB-1387565-A (GB)
Title: Supplying a charging current by way of telephone lines
IPC: H04M19/08
Filed: 1971-02-16
Abstract: 1387565 Automatic exchange equipment; substation equipment POST OFFICE 15 Feb 1972 [16 Feb 1971 20 Aug 1971] 4699/71 and 39135/71 Heading H4K In a subscriber carrier system a battery at the subscriber station is charged only when the line is idle and equipment at both the exchange and the subscriber station monitors the line and disconnects the supply and battery when the line is busy and reconnects them after a delay when the line is idle. At the exchange (Fig. 3) a changeover relay 25 with contacts 23, 24 is used to connect the subscriber's line 4, 5 to a power supply on terminals 9, 10 or directly to exchange lines 2, 3 when communication is required. Relay 25 is normally energized by transistor 26 conducting to give the connections shown. In the presence of ringing current on line 3, a loop on lines 4, 5 or a test loop on lines 2, 3 transistor 32 is made to conduct thereby switching off transistor 26 and releasing relay 25. Whilst the line is busy a positive voltage on line 3 keeps transistor 26 non-conducting. When the busy condition disappears capacitor 37 discharges through resistors 38, 40 and 42 to provide a delay before transistor 26 is made conducting to reconnect the power source to lines 4, 5. At the subscriber station (a disconnection circuit (Fig. 4) is arranged in parallel with the subscriber connections on lines 7, 8 and a power connection is made to the subscriber equipment over lines 49, 50. Under idle conditions SCR 47 and Zener diode 57 are conductive so that battery 48 is charged. A reduction in line voltage caused by looping, ringing current or an open circuit causes SCR 47 to switch off and be held off by the action of anode gate devices 60, 66. When the line voltage is restored, capacitor charges and then discharges through device 66 and resistor 67 giving a delay before SCR 47 switches on. For use on a shared service the Fig. 3 embodiment is modified to sense voltages on both line wires. The power supply circuit is connected to the line after a delay of between 30 and 55 seconds from the line being idle and the changeover at the subscriber occurs some 45 to 80 seconds after the idle condition is sensed.
Patent GB-1132541-A (GB)
Title: Improvements in or relating to the bonding of plastics
Inventor: PATTINSON RAYMOND JOHN
IPC: B29C37/00
Filed: 1965-02-03
Abstract: 1,132,541. Polyester-aminoplast impregnated paper laminates; moulding decorative articles. WHITTINGHAM & MITCHEL Ltd. 1 Feb., 1966 [3 Feb., 1965], 4702/65. Headings B5A and B5N. A method of forming an article having a surface which is relatively resistant to abrasion on a base of moulded polyester-resin-based plastics material comprises impregnating one surface of a sheet of fibrous material e.g. paper to part of the depth of the sheet, with urea and/ or melamine formaldehyde resin, and moulding a base of polyester-resin-based plastics material directly against the opposite surface of the sheet at such a temperature and pressure as to cause the polyester resin to penetrate part of the thickness of the sheet and so bond the moulded base to the sheet. The polyester resin preferably incorporates glass and other filling materials. In the examples:-(1) tissue paper impregnated with melamine-formaldehyde resin is cut to size and placed in the die cavity of a mould tool, a sheet of tissue paper impregnated on its printed surface with a mixture of urea- and melamine-formaldehyde resin is then placed in the cavity with its printed surface down, a composition of a thermosetting polyester resin incorporating glass and other fillers is placed in the mould and heat and pressure applied; (2) the two sheets of paper as in (1) are partially cured under pressure and heat and moulded with a polyester as in (1); (3) as in (1) omitting the first layer of tissue paper and (4) the impregnated printed paper is pressed between heated platens and moulded with polyester resin as in (3).
Patent GB-963521-A (GB)
Title: Nickel-chromium alloys
Inventor: SHAW STUART WALTER KER
IPC: C22C19/05
Filed: 1962-02-07
Abstract: An alloy has the following percentage composition by weight: <TABS:0963521/C6-C7/1> The Ti and Co contents of the alloy should not exceed 0.5 and 1 respectively.  The total amount of Fe, Si and Mn should not exceed 3.  Articles made from the alloy may be homogenized at 850-1250  DEG C. before being put into service.
Patent GB-1097769-A (GB)
Title: Improvements in or relating to etchings of aluminium foil
IPC: H01G9/04
Filed: 1965-02-03
Abstract: <PICT:1097769/C6-C7/1> High purity aluminium foil is etched for the production of electrolytic condensers by passing the foil through an etching solution at a rate up to 250 feet per hour and applying a current in the range 0.39 to 9.36 amps/sq. inch.  The solution, e.g. 10% NaCl in de-ionized water is at an elevated temperature such as 90 DEG C. - 100 DEG C.  Foil from roll 11 passes through cleaning tanks 12 and 13 containing respectively a chlorinated hydrocarbon solvent and de-ionized water.  The foil passes over a power roll 18 which is connected to one pole of a source of electric current and then into the electrolyte in which it passes in succession between pairs of cathode plate 22, the potential drop between the foil and the successive adjacent cathode plates reducing due to resistance of the foil.  Tanks 30-38 contain rinsing solutions and after passing through drier 40 the foil is wound on reel 42.
Patent GB-1262291-A (GB)
Title: Iodine complexes of alkylamine-sulphonic acids
Inventor: GLASBY ALAN
Filed: 1968-01-30
Abstract: 1,262,291. Iodine complexes of alkylamine sulphonic acids. DIPENIDAM Ltd. 30 Jan., 1969 [30 Jan., 1968], No. 4761/68. Heading C2C. A stable anti-microbial compound constituted by a complex comprising iodine, a C 12-14  alkyl-aminoethane sulphonic acid or sulphonate, and a complexing aid, may be obtained by mixing together the three components and agitating at an elevated temperature below 200 C. and preferably below 100 C. The complexing aid, which enters into the molecular structure and forms an integral part of the complex, may be one of such compounds known in the art in the production of iodophors. In particular, non- ionic, ethylene oxide condensate surface active agents are suitable, e.g. polyethoxylates of alkyl phenols having C 7-11  alkyl groups, are 7-15 ethylene oxide units. The complexing aid may be replaced in part by a polyhydric alcohol, preferably a 1 : 2 alkylene diol such as ethylene, propylene and butylene glycols.
Patent GB-556717-A (GB)
Title: Sewing machine
IPC: D05B57/00
Filed: 1942-04-15
Abstract: 556,717. Sewing machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). April 15, 1942, No. 4955. [Class 112] A needle-bar 21 reciprocates in a frame 24 mounted on a compound pivot 27 one axis of which is in line with the top shaft 14. It is vibrated transversely for making zig-zag stitches by means of a pitman 39 and an eccentric on a cross-shaft 42. It is vibrated in the line of feed, for feeding in co-operation with a feed-foot 98 and a feed-dog 89, by reason of the sliding engagement of the part 37<SP>1</SP> between spaced guides 65 on a frame 46 swingingly mounted on the top shaft 14. The frame 46 carries the loop-taker which is mounted on a crossshaft and is driven by a shaft 83 also mounted in the frame 46 and connected by a belt 87 with the top shaft. The frame 46 is oscillated by a pitman 58 and lever 59 on the feed shaft 60 activated from a variable feed-advance eccentric 64. The feeddog 89 has no up-and-down movement and co-operates with the feed-foot 98 on a feed-bar mounted in the frame 24 and coupled with a presser-bar 141 so that the two bars are lifted alternately. The cross-shaft 42 giving the lateral vibration to the needle-bar is mounted in the frame 46. The needle-bar driving pin 19 is pivotally connected to the needle-bar and rides in a block 71 which is embraced by the pitman 18. The block 71 reciprocates in guides 70 in a part 68 carried by the frame 46.
Patent GB-1185562-A (GB)
Title: Improvements in or relating to Electrical Warning Devices for Braking Systems
IPC: G01F23/70
Filed: 1968-01-31
Abstract: 1,185,562. Fluid-actuated switches. ALFRED TEVES G.m.b.H. 31 Jan.. 1968 [9 May, 1967], No. 5011/68 Heading H1N. [Also in Divisions F2 and Gl] An electric switch is provided in an electrical warning device for hydraulic brakes (Division F2) with a master cylinder 1 and a fluid supply reservoir 12 (e.f. schematic Fig. 1). The warning device has a pin 11 which can be operated by a sleeve member 4 axially displaceable in the master cylinder in dependence upon the hydraulic pressure in the working chambers 9, 10 of the dual-master cylinder illustrated and the pin extends radially out of the master cylinder casing 7 such that an electrical contact 16 may be operated by the pin 11 and also by a float member 13 to switch on the warning device in the event of a pressure failure in one of the brake circuits or should the level of the liquid in the fluid reservoir 12 fall. The pin 11 is spring urged into engagement with a recessed portion 17 on the sleeve 4 and is adapted to move upwardly when the sleeve member is moved to the left or right depending on failure of one or other of the brake circuits to actuate the electrical contact 16. As shown in the functional Fig. 2, the electrical contact 16 is disposed in the cover 18 of the supply reservoir 12.
Patent GB-1384351-A (GB)
Title: Method and apparatus for measuring the density of a fluid
IPC: G01N9/32
Filed: 1973-02-01
Abstract: 1384351 Fluid density measurement CANADIAN PATENTS & DEVELOPMENT Ltd 1 Feb 1973 5046/73 Addition to 1319313 Heading G1S An improvement in or modification of the densitometer disclosed in Specification 1319313 comprises a jet nozzle having an orifice the geometry of which is defined in terms of its hydraulic radius h which is such as to produce a turbulent jet. The Reynolds number R must be in excess of 1700 and V is the velocity of the supply jet, p the density of the supply jet and Á the viscosity of the supply jet. h is defined in terms of the area A of the orifice and its perimeter P thus, A turbulent jet is defined as being substantially conical in form when produced by a circular orifice, and having a virtual origin on its axis approximately five orifice diameters upstream of the orifice.
Patent GB-288415-A (GB)
Title: Improvements connected with commutating gear for use with high voltage electrical apparatus
IPC: H02K5/14
Filed: 1927-02-24
Abstract: 288,415. Calverley, J. E., and Highfield, W. E. Feb. 24, 1927. Rotary interrupters; conducting shield around contacts to prevent discharge therefrom. - In .commutating-gear for high-voltage electrical apparatus, the possibility of high-potential gradients between sharp edges on the conducting parts of the gear and their surroundings is avoided by arranging a conducting shield of smooth contour around the conducting parts and raising the shield to a potential not materially different from that of the gear. The invention is described with reference to a transverter of the kind described in Specification 216,690, [Class 38 (ii), Electric currents, Converting &c.], having disc type commutators 6, 15, 16 as described in Specification 214,698, [Class 35, Dynamo-electric generators &c.], and an insulated rotating shaft as described in Specification 238,046, [Class 35, Dynamo-electric generators &c.], carrying brush arms 10, 17, and a slip ring 12. The commutators are mounted on insulating plates 7, 5, 18 behind which the connections 8 to the segments are disposed. These plates carry the shields 19 - - 24 electrically connected in pairs by their supporting bolts 27, 28, 29. The potential of the end pair of shields is derived from the slip ring 12 through the brush arm 14 carried by the shield 22 which serves to'transmit high tension current to the outgoing conductor 31. The potential of the other pairs of shields is determined by connections 32, 33 to the connections of their respective commutators. The connections of the commutators pass out through openings in the shields 23, 24 into a sealing chamber and are protected along their length by enclosure in a tube of rectangular cross-section maintained at the potential of the corresponding shields by direct connection thereto.
Patent GB-1038892-A (GB)
Title: Fluid flow valve for vacuum plants
IPC: F16K31/40
Filed: 1964-02-07
Abstract: 1,038,892. Valves. SIEMENS & HALSKE A.G. Feb. 7, 1964 [Feb. 28, 1963], No. 5223/64. Heading F2V. A valve for vacuum plants has chambers R, S, P, Fig. 1, which may be hermetically sealed against each other, one of the chambers P being connected to a space of a lower pressure another R to a space of a higher pressure, and a third S arranged in such relationship to the two first mentioned chambers that the latter have in common with the third chamber a wal provided with openings 5, 6 to connect the chambers with one another, and a valve disc 3 situated in the chamber S, provided with a sealing device 5 and controlled by a pilot valve 8. When a winding 2 is energized, ar armature 1 and the pilot valve 8 are movec upwardly so that a port 10 causes the pressures in chambers S and P to be equalized. In creased pressure in the chamber R now lifts the valve disc 3. A port 14 in a valve 13 and a passage 18 in an armature 1 connect the chamber S to atmosphere when the valve disc 3 is closed. In Fig. 5, the valve 13 actuates a switch 26 to provide a signal or to reduce the current in the winding 2 once the valve disc 3 has been opened while in Fig. 7 the chambers R, S, P are shaped differently to permit a number of valves to be combined in a block like assembly which may be used in the vacuum plant of an electron microscope, the chamber I of a central valve being connected to the chambers R of a pair of adjoining valves Fig. 10 shows two such block-like assemblies connected to opposite sides of a magnetically actuated high vacuum valve 30. Vacuum measuring tubes 33, 34, 35, 36, a connection 37 for an electron microscope, ventilating valves 40, 41, 42 and a connection 43 for a high vacuum pump are provided.
Patent GB-114429-A (GB)
Title: Improvements in Electric Couplings.
Inventor: VALETTE HENRI DE LA
IPC: H01R11/22
Filed: 1918-03-25
Abstract: 114,429. La Valette, H. de. March 28, 1917, [Convention date]. Addition to 105,227. Plug couplings.-In the plug and socket coupling described in the parent Specification, both hands are necessary to effect the coupling, one to hold the cable and the other to slide the socket casing 8 (and the coned portion 7) with it backwards against the action of the spring 6 so as to free the jaws of the socket 3 and allow them to open to pass on to the spherical headed plug. According to the present invention, the sleeve member 5 is formed with bayonet slots 9 to be engaged by pins 10 on the inner ends of the jaws, as shown in Fig. 2, thereby opening the jaws so that the socket can be placed in position with one hand and the sleeve member thereupon rotated to release the jaws which clip the plug under the action of the spring 6. The pins 10 may be so arranged, in the position shown in Fig. 1, to lie above the end of the sleeve, and, when the socket is in position on the plug with the jaws gripping the plug, it may be locked there by rotating the sleeve slightly.
Patent GB-677602-A (GB)
Title: Improvements in and relating to fluid fuel combustion chambers
IPC: F23R3/60
Filed: 1951-03-05
Abstract: 677,602. Generating combustion products under pressure. BRITISH THOMSONHOUSTON CO., Ltd. March 5, 1951 [March 24, 1950], No. 5258/51. Class 51 (i). An end cap for a combustion chamber comprises at least two coaxial frusto-conical rings 9a, 9b, 9c, which are nested together to form a hemispherical cap, the innermost ring 9c having a central opening to receive a fuel injection nozzle, and the larger diameter of an inner ring is greater than the smaller diameter of the next adjacent ring so that the overlapping edges define annular orifices through which a thin film of cooling and insulating fluid, such as air, flows inwardly towards the fuel nozzle, the frustoconical rings being spaced apart by circumferentially-spaced brackets 17, 18 which permit relative expansion. Air deflecting rings 19, 20 are secured to the outer surfaces of the rings 9a, 9b, and the brackets 17, 18, comprising bent sheet-metal clips, are secured to the rings 9b and 9c and to the deflecting rings 19 and 20, respectively. Air enters through the annular slots as shown by the arrows 30, 29. A louvre ring 21 is welded at 22 to the upstream edge of the frusto-conical ring 9a, and air entering through the nozzles 25 in the ring 9a is deflected by the louvre ring along the inner surface of the ring 9a. The downstream edge of the louvre ring is notched at 23, and the upstream edge may also have slits, to allow for expansion. The cap is located by means of pins 16 secured to the cowl 8 and projecting freely through holes in the outer ring 9a. In a modification, the nozzles 25 are replaced by slots, each of which is associated with a deflector plate instead of the single louvre ring. Specifications 637,223, 639,617, 671,853, [Group XI], and 672,780 are referred to.
Patent GB-949686-A (GB)
Title: Tower packing elements and methods of moulding such elements
Inventor: ECKERT JOHN SAMUEL
IPC: B29C53/24
Filed: 1961-02-13
Abstract: 949,686. Moulding plastic tower-packing elements. UNITED STATES STONEWARE CO. Feb. 13, 1961, No. 5259/61. Heading B5A. [Also in Division B1] Tower-packing elements (see Division B1), are moulded by pressing a ribbon of plastic material 75 between a concave roll 18 and a convex roll 22 and corrugating the edges of the saddle by rotating a corrugated trim roll 25 while it is resting on the edges of the roll 18. The rolls 18, 22 have grooves 77, 78 which form ribs on the surfaces of the saddle. The rolls are rotated intermittently by a Geneva mechanism 13, 14 and the saddles are cut by a knife 50 and ejected by a plate 67 from the roll 18. Specifications 949,687 and 949,688 are referred to.
Patent GB-312121-A (GB)
Title: Improvements in and relating to signs or other advertising devices
IPC: G09F13/14
Filed: 1928-02-20
Abstract: 312,121. British Thomson-Houston Co., Ltd., and Smith, F. E. Feb. 20, 1928, Reel and endless web apparatus; reel and non-endless web apparatus; moving apparatus combined with vehicles.-In signs of the type in which representations on a horizontal or vertical flexible band are seen by reflection in or from an inclined vehicle and the band is driven by flexible coupling from the engine, or by an electric motor energized from the lighting equipment, Geneva stop gearing being optionally employed. For night illumination of the band electric lamps 2 having reflectors are arranged at the sides above the horizontal part of the band. The band 1 may be endless or otherwise, may move longitudinally or transversely, and may be stencilled with plain or coloured mica or celluloid in the openings, or be of gauze to which lettering is secured.