baber/WOPTO huggingface dataset:
Patent GB-405332-A (GB)
Title: Transmission lines for ultra-short electromagnetic waves
IPC: H01B11/18
Filed: 1932-08-04
Abstract: 405,332. Cables. INTERNATIONAL COMMUNICATIONS LABORATORIES, Inc., 200, Mount Pleasant Avenue, Newark, New Jersey, U.S.A., and CLAVIER, A. G., 46, Avenue de Breteuil, Paris. Aug. 4, 1932, No. 21889. Drawings to Specification. [Class 36.] A transmission line for electromagnetic waves of ultra short length, i.e. in the range between 1 and 100 centimetres, comprises a plurality of conductors spaced apart by a distance equal to a quarter of the wavelength of the transmitted wave. The conductors are preferably of the concentric air - spaced type. Specification 392,043 is referred to.
Patent GB-1160948-A (GB)
Title: Improvements in Gas-Heated Thermoelectric Generators
IPC: F23D14/58
Filed: 1968-05-09
Abstract: 1,160,948. Burners. APPLICATION DES GAZ. 9 May, 1968 [12 May, 1967], No. 21968/68. Heading F4T. [Also in Division H1] The hot plate 2 of a thermoelectric generator is heated by gas burning from a perforated wall 5, the apertures 8-10 of which are arranged so that the face 11 of the hot plate 2 nearest to the thermoelectric element 3 is at a uniform temperature across its area. The wall 5 may comprise a wire lattice or a perforated metal sheet as shown. In the latter case the central area 7 is imperforated and concentric rings of apertures 8-10 have increasing diameter towards the periphery of the sheet so that greater heat is supplied to the outer parts of the hot plate 2 from which heat loss is also greatest. The burner includes a nozzle 19, 20 receiving gas, such as propane or butane, and air from a snout 21 and an inlet 26 respectively. The nozzle 19, 20 opens into a cup 4 which is closed by the perforated wall 5. Combustion products escape through an outlet 28 in a casing 17, which outlet may be connected to a heat exchanger. An aperture 32 in the casing 17 permits initial ignition of the gas supply.
Patent GB-1196441-A (GB)
Title: Signal Processing System
IPC: H04B14/00
Filed: 1967-05-11
Abstract: 1,196,441. Bandwidth compression system. RESEARCH CORP. 11 May, 1967 [13 May, 1966], No. 22012/67. Headings H4R and H4P. A complex input signal is converted into a signal of a form having the same zero crossings with a bandwidth of the minimum value consistent with preserving the positions of the zero crossings. For speech or television, complex zeros of the input signal are converted to real zeros before conversion in order to allow reconstitution of the original signal after, e.g., transmission or recording and replay. As shown in Fig. 13 an input signal is converted in unit 19 into pulses occurring at each zero crossing (Fig. 6(b), not shown) which pass to a unit 39 which performs a Hilbert transformation of the pulses (Fig. 6(c)) which is integrated in unit 60 (Fig. 6(d)) and fed to unit 65 which provides the exponent of its input (Fig. 6(e)). The Hilbert transformation device 39 involves delay and an equivalent delay is applied to its input by the unit itself acting with a binary divider 75. The two signals from units 65 and 75 are multiplied e.g. in a balanced modulator 85, to provide the final output. When it is desired to preserve the complex zeros of the input signal, they must be transformed first into real zero-crossings. One method of doing this comprises repeated differentiation of the signal (Fig. 14(a), not shown); the original signal may then be recovered from the output of Fig. 13 by equivalent repeated integration (Fig. 14(b), not shown). Another method which may be used as an alternative or in addition comprises adding a sine wave at the maximum frequency of the signal (Fig. 15(a), not shown); when re-constituting the input this signal is removed by a notch filter (Fig. 15(b), not shown). The number of zero-crossings per unit time may be counted and used to control the number of differentiations or the magnitude of the added signal; the latter may also be controlled by measurement of the short-term power of the input. The system allows speech or television to be transmitted or recorded without causing amplitude distortion due to non-linearity of the operation performed. Hilbert transformation, Fig. 10.-The input is fed to a 2n stage shift register 40 of which the first n stages provide negative outputs and the last n stages positive outputs. The output resistances 43 decrease in value from the ends to the centre to give the required output (Fig. 11(c), not shown) from an input pulse (Fig. 11(b)). The delayed input required in Fig. 13 is derived from a centre stage through pulse generator 51. Generating exponential functions. Fig. 12.-A negative feedback amplifier T1, T2 develops the negative of the input V1 across a diode D. The current through the diode is exponentially related to the voltage across it, and a voltage proportional to this current is recovered across R C . The bias across the diode may be adjusted at the source B and the gain of the amplifier may be adjusted by making R L  variable.
Patent GB-1186514-A (GB)
Title: Polyesters
Inventor: HURWORTH NEVILLE ROBERT
IPC: C08G63/06
Filed: 1966-05-18
Abstract: 1,186,514. Polyester coatings. IMPERIAL CHEMICAL INDUSTRIES Ltd. 2 May, 1967 [18 May, 1966], No. 22041/66. Headings B2E and B2K. [Also in Divisions B5 and C3] Substrates are coated with a copolyester containing the residues of (a) terephthalate acid (b) ethylene glycol (c) 6-hydroxycaproic acid and, possibly (d) isophthalic acid or other difunctional compounds or (e) tri- or higher polyfunctional compounds. The copolyesters may be applied as a solution (e.g. in chloroform or methylene chloride with or without trichloroethylene), as a dispersion (e.g. in petroleum ether) or by a melt technique (e.g. flame spraying or melt extrusion). They may be mixed with other resins (e.g. rosin esters, terpene resins or polymethyl methacrylate) or pigmented (e.g. with titanium dioxide). Specified substrates are glass, aluminium, copper, mild steel, poly (vinyl chloride), poly (ethylene terephthalate), paper, wood, leather, cotton and wool. Examples describe the coating of mild steel and aluminium with a solution of the copolyester in methylene chloride, with and without poly (methyl methacrylate) and titanium dioxide.
Patent GB-232110-A (GB)
Title: Improvements in and relating to guard rail structures for toy railway tracks
IPC: A63H19/30
Filed: 1924-09-18
Abstract: 232,110. Fischbach, W. M. Sept. 18, 1924. Rails and tracks.-A guard for preventing the trains leaving the rails at curves comprises a vertical strip adjustably mounted parallel to the rails on the outside of the curve and above their level. The strip 21 is carried by supports 20 on a strip 17 having threaded studs passing through slots 16 in radial members 14 secured to a base member 2 which clips over the track. The guard is made in sections, tongues 26, 8 being provided on the guard and base 2 to engage mating sockets on the next sections. In a simpler form the guard is mounted directly on brackets with members engaging the sleepers.
Patent GB-349834-A (GB)
Title: Improved means for compensating for changes in liquid volume due to temperature
IPC: F15B7/10
Filed: 1930-07-22
Abstract: 349,834. Regulating liquid level. CHARLES, M., 217, Boulevard St. Denis, Courbevoie, Seine, France. July 22, 1930, No. 22110. Convention date, Aug. 14, 1929. [Class 123 (i).] A device for compensating for the variation in volume of liquid consequent on changes in temperature applicable to the maintenance of a constant level in tanks comprises a chamber k of variable volume in which is secured a chamber m of variable volume, the inner chamber containing a liquid preferably more expansible than that in the tank or transmission, and the annular space being connected to the tank &c. Specification 250,596, [Class 122 (i), Engine and like cylinders &c.], is referred to.
Patent GB-637544-A (GB)
Title: Improvements in or relating to speed-regulating arrangements for electric motors
IPC: H02P7/282
Filed: 1947-08-08
Abstract: 637,544. Automatic speed control systems. SPERRY GYROSCOPE CO., Inc. Aug. 8, 1947, No. 22128. Convention date, Dec. 4, 1943. [Class 38 (iv)] In a system for controlling the speed of a constant speed motor, the motor 11 drives a permanent magnet generator 12 having twophase windings 23, 24, the winding 23 of which is connected through a non-resonant impedancereactance network 13 to the grid of an amplifier 14 which supplies a phase-detector 15 connected to an auxiliary field winding on the motor 11. The second winding 24 of the generator is connected to the split secondary winding 48 of the transformer 46 feeding the phase-detector. The arrangement is such that at correct frequency the network 13 delivers zero output, but at frequencies above or below that value, the network produces voltages which are of opposite phase and proportional to the speed difference and the rate of change of speed (i.e. acceleration). Accordingly, the amplifier 14 supplies a control voltage which together with the reference voltage produced in the winding 24 is detected by 15 and supplies a voltage to the compensating winding 62 to correct any departure from constant speed. In a modification, the speed of a repulsion motor is maintained constant by a similar system wherein the output from the phase-detector is modulated by a voltage of the supply frequency to the motor and the modulated voltage is supplied direct to the commutator brushes of the motor. The generator 12 may also act as a source of constant voltage supply; also the resistances of the network may be adjustable so that the system may be adapted for operation at different constant speeds. Specification 612,426 is referred to.
Patent GB-695358-A (GB)
Title: Improvements in and relating to jib cranes
Inventor: KINDER WILLIAM COARE
IPC: B66C9/04
Filed: 1950-09-08
Abstract: 695,358. Cranes. STOTHERT & PITT, Ltd. Sept. 8, 1950. No. 22212/50. Addition to 652,459. Class 113 (i). [Also in Group XXX] The travelling wheels of a crane for use on shipboard may be raised by jacks on the crane carriage and turned from a position for engaging one track to a position for engaging an intersecting track. Each wheel is mounted in a separate bogie unit which comprises (Fig. 4) a box structure 101 mounted by means of a pin 106 and a sole plate 105 for rotation about a vertical axis and carrying a bearing pin 102 for an eccentric formed with a hub 103 on which the wheel 110 is journaled. Straps 125 bolted to the eccentric have a pin-and-slot connection with a sliding block 122 guided by a rod 127 and moved by a jack screw 121 to raise and lower the wheel 110. The wheels 110 may thus be retracted from engagement with one track and turned about the pins 106 into alignment with an intersecting track. The bogie units may be locked against rotation by pins 114 (Fig. 5) engaged in bores 115 in platforms 109 on the crane carriage and in the top plates 104 of the bogie units. They may be detached by unscrewing collars 140 normally locked bv set screws 144 until the collars and the sole plates 105 may be disengaged from recesses in the upper and lower surfaces of the platforms so that the pins 106 may be slid out of slots 111, Fig. 2, in the platforms. The platforms are built onto the ends of two intersecting girder elements 107 reinforced by an annular girder unit 108 to form the carriage.
Patent GB-1138758-A (GB)
Title: Sensitive photographic material
IPC: C07D257/04
Filed: 1966-05-19
Abstract: 1,138,758. Photographic emulsions. EASTMAN KODAK CO. May 19, 1966 [May 24, 1965], No.22353/66. Heading G2C. A sensitive photographic material comprises a support and an unfogged silver halide emulsion of the surface latent image type mixed with or coated contiguous with a fogged silver halide emulsion of the internal latent image type (e.g. as described in Specification 935,249), the fogged grains having absorbed thereon, as an anti-foggant, a heterocyclic nitrogen compound containing a mercapto group attached to a carbon atom which is in the alpha position with respect to a nitrogen atom in the heterocyclic ring. The preferred anti-foggants are 5-mercaptotetrazoles, but the mercapto group may also be attached to an optionally substituted oxazole, benzoxazole, selenazole, benzothiazole, triazole, imidazole, oxadiazole, azanaphthalene, naphthoxazole, benzimidazole, imidazoline, pyrimidine, triazine or azaindene nucleus; the mercapto group has the formula - SX where X is H, an alkali metal or a cation or quaternary, and may form a tautomeric thione group; many anti-foggants are listed. The emulsions or the developers preferably contain as sensitizers an alkylene oxide polymer or oxonium compound (e.g. quatenary ammonium or phosphonium or ternary sulphonium group); the developers preferably also contain a silver halide solvent and an iodide, and the emulsions may also contain further anti-foggants, sensitizers, stabilizers and hardeners.
Patent GB-205271-A (GB)
Title: Improvements in and relating to combined refrigerators and water coolers
IPC: F25D3/04
Filed: 1922-08-17
Abstract: 205,271. Williams, S. B. Aug. 17, 1922. Receptacles, detachably securing to running boards.-A combined refrigerator and beverage cooler may be secured to the running-board of a motor-vehicle by bolts 33 engaging lugs 34 on the top of the refrigerator and staple-like fittings 30 on the board.
Patent GB-481875-A (GB)
Title: Process for the production of valuable hydrocarbon products by the thermal treatment of distillable residues produced in the destructive hydrogenation of carbonaceous materials
IPC: C10G1/00
Filed: 1936-08-15
Abstract: In processes of the kind in which valuable hydrocarbon products are produced by the destructive hydrogenation of carbonaceous materials in the presence of halogens and the halogens are removed by treatment with calcium compounds, stable calcium halides formed being separated by centrifuging or filtration, the products comprising heavy oils boiling above 300 DEG  C. or residues, are subjected to a further thermal treatment while adding prior to or during the heating up, halogen-free non-oxidizing acids capable of setting free hydrogen halides from calcium halides, or ammonium or alkali salts of said halogen-free-acids capable of converting calcium halides with the formation of ammonium or alkali halides. The further thermal treatment is preferably a catalytic destructive hydrogenation in which the products of the process are mixed with fresh carbonaceous material.  Salts which may be added comprise alkali metal salts of acids of sulphur or phosphorus, e.g. sulphates or bisulphates; alkali or ammonium carbonates or bicarbonates; or ammonia and carbon dioxide under pressure (ammonium carbamate).  Finely-ground coal is made into a paste with heavy oil obtained from the same coal, 0,06 per cent tin oxalate and 1,15 per cent ammonium chloride being added. The mixture is heated with hydrogen under 250 atmos. pressure to 460 DEG  C. and passed through a reaction vessel in the latter part of which calcium hydroxide in an amount 15 per cent in excess of that necessary to neutralize the halogen is introduced.  The reaction products are passed to a separator in which oils of high boiling point are separated from solid residues and then centrifuged.  The centrifuged oil is mixed with 2 per cent ammonium carbonate and employed without filtration to paste fresh coal which on destructive hydrogenation does not give rise to polymerization products causing disturbances in the reaction vessel. 3 per cent of a 50 per cent solution of phosphoric acid may be used instead of the ammonium carbonate.
Patent GB-598210-A (GB)
Title: Improvements in or relating to push button switch assemblies
IPC: H03J5/32
Filed: 1945-09-01
Abstract: 598,210. Keyboard switches. HEYNE, W. O., and PLESSEY CO., Ltd. Sept. 1, 1945, Nos. 22525 and 25333. [Class 38(v)] Each of the multi-way switch units, operated by a bank of switch keys 16 comprises a slotted insulating stator 1 and a slidable insulating plate 7 carrying knife contacts 8, which engage wiper contacts 6 secured to the stator between ribs 3 thereof. Retaining plates on the face of the plate 7 opposite the contacts 8 overlap the ribs 3. Arms 21 on each key 16 engage holes 23 in the plates 7 of the adjacent switch units, the keys 16 being slidably mounted in a frame comprising a front plate 12, end plates 14, and rear rods 13 carrying spacing plates 17 which guide the rear ends of the keys 16. Springs 18 and a latching bar 15 return previouslyoperated keys when a further key is pressed. Each switch unit is mounted at the front in two notches in the plate 12 and at the back on the rods 13, which pass through holes 5.
Patent GB-822321-A (GB)
Title: Improvements in or relating to thrust bearings and the like
IPC: F16C27/08
Filed: 1955-02-04
Abstract: 822,321. Pivoted pad bearings. ENTICKNAP, A. May 4, 1956 [Feb. 4, 1955], No. 22667/54. Class 12 (1). A pivoted pad thrust bearing comprises an annular member 11 having its bearing-surface subdivided by slits 12 thus forming a plurality of pads 14 which are connected to the body of the member 11 by thin and flexible neck portions 15 formed between radial conical holes 13 in the member 11. The neck portions 15 are offset relative to the centres of area of the pads 14. In a modification the invention is applied to a reciprocating slipper, such as a connecting-rod crosshead guide, the apertures 13 being plain drilled holes.
Patent GB-398907-A (GB)
Title: Improvements in abrasive coated materials
IPC: B24D11/00
Filed: 1932-03-23
Abstract: 398,907. Emery and sand cloth &c. TENNANT, W. J., 111, Hatton Garden, London.-(Behr-Manning Corporation ; Troy, New York, U.S.A.) March 23, 1932, Nos. 22668/32 (divided on 378,014) and 11915/33, [the Second Provisional Specification being divided out of the first Provisional Specification.] Drawings to Specification. [Class 60.] The description and drawings follow closely those of Specification 378,014, but the claims are directed to the production of sandpaper &c. having the grains of abrasive stratified according to size ; the grains also may be oriented to lie with their sharpest points facing outwardly from the paper. An additional Figure illustrates means for enhancing the stratification. Specification 379,379 is referred to.
Patent GB-701515-A (GB)
Title: Improvements in or relating to gas turbine cycles
Inventor: GRINSTED BRIAN
IPC: F02C3/26
Filed: 1950-09-14
Abstract: 701,515. Gas turbine plant. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Sept. 12, 1951 [Sept. 14, 1950], No. 22672/50. Class 110 (3) A gas turbine plant for utilizing a solid water bearing fuel such as bagasse, sewage sludge, coal slurry, sulphite pulp mill waste, town refuse or peat, comprises a source of compressed air which has been heated by compression, a fuel drier, a combustion chamber and a turbine, the arrangement being such that the compressed air is fed partly to the fuel drier and partly direct to the combustion chamber in which the dried fuel is burnt, and the turbine is fed with combustion gases from the combustion , chamber and the whole of the water content of the fuel. The plant shown comprises a compressor 1 driven by a turbine 3 which supplies the air heated by compression to a combustion chamber 4 and a fuel drier 5. Part of the combustion gases are taken off at 4a and led to the drier 5 to which the water bearing fuel is supplied through an inlet 6. The heated air and combustion gases evaporate some or all of the water content of the fuel which is separated from the solid fuel in the separator 7. The solid fuel together with a small part of the gaseous constituents is delivered directly to the combustion chamber 4 where it is burnt in the air supplied by the compressor 1. The greater part of the gaseous constituents are led through a heat exchanger 8 into the combustion chamber downstream of, the primary zone to cool the chamber walls. The heat exchanger is heated by the exhaust gases of the turbine 3. The quantity of air supplied to the combustion chamber 4 is at least that required for a stoichiometric air-fuel ratio but the quantity supplied to the drier 5 will vary with the water content of the fuel. For low water contents a small quantity of combustion gases would be extracted at 4a and a large quantity of air will then flow through the drier 5. For high water contents, a large quantity of combustion gases would be necessary and the air flow through the drier 5 reduced. The quantities of air and recirculated gas fed to the drier may be such that the temperature of the gaseous constituents at the entry to the heat exchanger corresponds to the dew point. In a modification, the heat exchanger 8-is omitted. As described in Specification 666,692, the fuel supply to the drier may be preheated and partially dried by means of the exhaust gases of the heat exchanger 8. Additional water may be introduced to lower the inlet temperature to the turbine. When using fuel of low moisture content, the gases from the separator 7 may be led through the exchanger 8 direct to the primary combustion zone. In an alternative embodiment, the gases from the exchanger 8 may be mixed with the gases in the duct between the combustion chamber outlet and the turbine. Specifications 701,516 and 701,517 also are referred to.
Patent GB-140974-A (GB)
Title: Improvements in variable speed and reverse gears
IPC: F16H35/00
Filed: 1919-09-16
Abstract: 140,974. Buck, A. E. Sept. 16, 1919. Variable-speed and reversing gearing.-A vari. able crank drives reciprocating racks or bars automatically engaging with opposite sides of a driven pinion or friction wheel to produce a continuous forward or reverse drive. A crank-pin C<1> on a block C is adjusted in a groove B in a rotating driving-plate A by a collar H sliding on the shaft and connected by a link Cr to links E, E<1> connected respectively to the block C and the plate A. A locking-pin (not shown) connecting the parts A, C is disconnected by a Bowden mechanism to allow of adjustment of the part C. The crank-pin is connected to a double rack or bar K, K' moving on rollers &c. in guides I. and moved to engage alternately with opposite sides of a pinion or friction wheel M by links 0, 0<1> and levers N' controlled by a stepped lever N moved alternately in opposite directions by tappets P, P' on the plate A or by a separate cam disk. By moving the crank-pin past the shaft centre, a reverse drive is obtained. When friction gearing is used, spring-supported surfaces on the bars K, K<1> are employed. The crank-pin C' mav be adjusted and the bars K, K' may be operated for. engagement with the wheel M by screw and nut action. Where change of speed during drive is not required, the crank-pin C<1> may be adjusted by hand and secured in position by a bolt and nut.