baber/WOPTO huggingface dataset:
Patent GB-480485-A (GB)
Title: Improvements in or relating to circuit arrangements for measuring very high potentials or for rendering such potentials effective in apparatus designed to operate at lowpotentials
IPC: G01R15/14
Filed: 1937-02-22
Abstract: 480,485. Automatic regulation. SIEMENS & HALSKE AKT.-GES. Feb. 22, 1937, No. 5279. Convention date, Feb. 22, 1936. [Class 38 (iv)] [Also in Group XXXVI] High-voltage measurements in which a capacitance potential divider is employed have the tapped potential on the condenser chain simulated by means of an automatic compensator in respect of phase or amplitude, the low-voltage measuring current or volts, or such current and voltage for operating lowvoltage apparatus generally, being supplied without taking energy from the potential divider. The potential across condenser 15 corresponds to the quantity to be taken off at terminals 16, 17 which are in series with the secondary windings of transformers 6, 7, 12, the condenser 15 being connected in parallel with these windings. The condenser comiec- ; tion includes an amplifer 13, the output of which contains the series-connected current windings 18, 19 of induction instruments 8, 9. The voltage windings 20, 21 of the instruments 8, 9 are supplied by phase-shifter 5 with potentials displaced by 90‹, as also are the primary windings of transformers 6, 7. Normally the system is balanced as regards phase and amplitude with the voltage tapped across condenser 15, any out of balance produced on the mains or potential divider being compensated by the transformers 6, 7 geared at 10, 11 with the induction instruments 8, 9. Corresponding current values can be obtained by employing ring-type current transformers connected to the compensation circuits. The Specification as open to inspection under Sect. 91.comprises also the following arrangement. The secondary winding 30. Fig. 2 (Cancelled), of the power transformer is in series with the secondary winding of transformer 31 and in parallel with the primary of transformer 32. The potential across condenser 26 which it is required to simulate at terminals 27, 28 is supplied to amplifier in put 33, 34 through the secondary winding of transformer 32, the amplifier output being fed to the primary winding of transformer 31. If the potential taken from 30 is equal to that across condenser 26, no current is supplied to amplifier 35, but if a difference potential is set up, it is amplified and supperposed to effect compensation through transformer 31. this subject-matter does not appear in the Specification as accepted.
Patent GB-608347-A (GB)
Title: Improvements in or relating to means for fixing stair rods
IPC: A47G27/06
Filed: 1946-02-20
Abstract: 608,347. Stair rods. SANDERS, T. W. Feb. 20, 1946, No. 5343. [Class 52(v)] In means for fixing a stair rod a pair of angle members 2, 3, each connected to the tread and riser of the staircase and offset therefrom over part of its length, are adapted to co-operate with a second pair of correspondingly shaped angle members 4, 5 oppositely mounted on the rear of the rod such that the opposed offset portions enter into locking engagement by sliding movement of the rod. The stair rod is triangular in cross section with the rear apex rounded off.
Patent GB-949773-A (GB)
Title: Improvements relating to photographic colour printing
IPC: G03B27/73
Filed: 1960-02-15
Abstract: 949,773. Colour photographic printing. GEVAERT PHOTO-PRODUCTEN N.V. Feb. 15, 1960 [Feb. 13,1959], No. 5368/60. Heading G2C. Colour images are printed on to material which comprises red-, blue-, and green-sensitive layers in which the spectral sensitivity curves of the blue- and the green-sensitive layers overlap by exposing the subject to be printed using a white light source and two filters which are together located in the printing beam one of the filters transmitting light in two of the three primary colours and the other filter transmitting in the third colour and the absorption bands of the filters being such that transmission is prevented or restricted in the spectral region where the sensitivity curves of the blue- and green-sensitive layers overlap and terminating the exposure to each of the three primary colours after a predetermined quantity of light of that colour has reached the print material by inserting a filter which absorbs light of that colour and transmits the other primary colours. Generally the filters used are blue and yellow or green amd magenta and each filter element occupies half of a circular screen placed near to the lens. In the light beam of the apparatus is placed, a heat-absorbing filter, the dual coloured circular screen, a light-diffusing filter, the negative and the positive print material. Specification 660,099 is referred to.
Patent GB-724949-A (GB)
Title: Discriminator circuit
IPC: H03K9/00
Filed: 1953-02-26
Abstract: 724,949. Pulse discriminating and flip-flop circuits. ATOMIC ENERGY OF CANADA, Ltd. Feb. 26, 1953 [March 31, 1952], No. 5438/53. Class 40 (6). In an amplitude-discriminating circuit, the anode of amplifying valve V2 is coupled to the grid of cathode follower V3, the amplifier being stabilized by a negative feedback connection from the cathode of valve V3 over diode V6 to the grid of valve V2, input pulses exceeding a predetermined amplitude being fed in over diode V4. In the absence of a pulse both valves V2, V3 conduct, the diode V6 maintains the negative feedback path operative, positive feedback being effective over resistor R19 and capacitor C5 and also over diode V8. Both valves V2 and V3 conduct, the latter with a small anode current. A negative input pulse drives the grid of valve V2 negative, tending to cut off the diode V6, the resulting rise in anode potentials and thus the cathode potential of valve V3 causing diode V6 to cut off completely, thereby removing the negative feedback. The grid potential of valve V3 rises rapidly until caught by diode V7 conducting, the positive feedback being enhanced when the cathode potential of valve V3 has risen sufficiently to overcome the small D.C. bias on the rectifier D1. The rise in cathode potential of valve V2 biases off diode V8, the capacitor C5 subsequently charging over resistor R11 until the cathode of valve V2 falls sufficiently for valve V2 to pass anode current. When the input signal ceases or capacitor C5 has charged sufficiently, valve V2 conducts, cutting off valve V3 so that capacitor C5 discharges over diode V8. When the capacitor C5 has discharged sufficiently the anode potential of valve V2 rises and valve V3 is again rendered conducting. Diode V6 is caused to conduct so that the negative feedback path is again operative. Variation of the setting of potentiometer R1 controls the cathode potential of valve 1 1 and thus the amplitude of the pulse necessary to trigger the circuit. The capacitor C5 may have a series of valves so that the recovery time is variable.
Patent GB-687496-A (GB)
Title: Improvements in or relating to water or other liquid meters
Inventor: CROSSE FREDERICK CECIL ZULA
IPC: G01F15/00
Filed: 1950-03-03
Abstract: 687,496. Rotary meters. MEASUREMENT, Ltd. Feb. 26, 1951 [March 3, 1950], No. 5473/50. Class 110(ii) A liquid meter of the rotary or semi-rotary types has its casing, cover, or other static parts subjected to atmospheric pressure on one side and hydraulic pressure on the other formed of an organic moulding composition reinforced internally with metal. The reinforcement may be in the form of a spider or perforated metal web and may extend to the connecting inlet and outlet sockets. The coefficients of expansion for the metal and the plastic parts are preferably similar.
Patent GB-1400635-A (GB)
Title: Method of preparing a diolefinic hydrocarbon
IPC: C07C5/333
Filed: 1973-02-03
Abstract: 1400635 Dehydrogenating olefins ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT NEFTEKHIMICHESKIKH PROTSESSOV IMENI AKADEMIKA JU G MAMEDALIEVA AKADEMII NAUK AZER BAIDZHANSKOI SSR 3 Feb 1973 5488/73 Heading C5E Diolefinic hydrocarbons are prepared by dehydrogenating olefins in an upflowing current of the olefins, steam and a catalyst which comprises by wt. 35-50% Cr 2 O 3 , 20-30% Fe 2 O 3 , 20-25% ZnO and 0À5-2% SiO 2 , the concentration of the catalyst in the current being 5-60 kg./m.<SP>3</SP>. The dehydrogenation may be effected at 560-600‹ C. under isothermal conditions with an olefin : steam ratio of 1 : 10 to 1 : 20. Spent catalyst may be removed from the current, oxidized on a fluidized bed and recycled to the current. Examples describe the dehydrogenation of a butane/butylene fraction to butadiene and of an amylene fraction to isoprene.
Patent GB-383826-A (GB)
Title: A secure fastener of the head and handle of any sweeping brush, long-handled scrubber, swabbing appliance, and the like
IPC: B25G3/12
Filed: 1932-02-25
Abstract: 383,826. Fixing broom handles. BROWN, J., 115, Harris Street, St. Helens, Lancashire. Feb. 25, 1932, No. 5614. [Class 61 (i).] A broom &c. is secured to the handle by a socket with a pair of lugs carried down some distance alongside the handle and bent outwards with a strengthening radius to form feet for attaching to the broom head.
Patent GB-1524293-A (GB)
Title: Dispenser metering valves
IPC: B65D83/14
Filed: 1976-02-12
Abstract: 1524293 Pressurized dispensing containers S A VALOIS 12 Feb 1976 [12 Feb 1975] 05638/76 Heading F1R [Also in Division B8]  A dispensing valve for discharging a measured quantity of product from a pressurized dispenser incorporates a piston which discharges the measured quantity when the valve is opened. Piston 25 is slidable in housing 10 and has an aperture surrounded by sealing lip 25b through which passes a valve stem 16 having larger and smaller diameter portions 16b, 16c respectively, the larger diameter 16b being sealingly engagable with the lip 25b when the stem 16 is depressed. In the inoperative position the housing 10 fills with product. When the stem 16 is depressed the aperture in the piston is sealed by the portion 16b so that the pressure in the container lifts the piston 25 to discharge the trapped product through the aperture 23. As shown the piston is returned by a spring 26. In a second embodiment Fig. 5 (not shown) the piston has differential areas so that it is returned by pressure. In a further embodiment Fig. 6 (not shown) the piston housing is disposed outside the dispenser enabling a larger piston (which may also be returned by pressure) to be used.
Patent GB-550860-A (GB)
Title: Means for breathing mixtures of gases at low temperatures
IPC: A62B7/12
Filed: 1940-03-29
Abstract: 550,860. Respiratory appliances. BOOTHBY, W. M. March 29, 1940, No. 5692. Convention date, Dec. 14, 1939. [Class 81 (ii)] A mask adapted for the breathing of mixtures of gases and for use in low temperatures, e.g. an oxygen mask, is provided with an opening communicating with the atmosphere occluded by a body of porous non-conducting material e.g. sponge rubber. A layer of sponge rubber may also be attached at the face engaging parts of the mask 20 that it is interposed between the mask body and the face. In a construction shown in Figs. 1 and 7 a body of sponge rubber 35 is disposed in a turret-like extension 32 below which is a tube 23 carrying a rebreathing bag 26 into which extends an oxygen supply pipe 41. In a form shown in Fig. 10 the outlet to atmosphere is constituted by perforations 54, in a tube 53, which are surrounded by a sponge rubber sleeve 55. A sheet of sponge rubber 106 may be provided as shown in Fig. 1 to provide a non-conducting bearing surface for the face of the wearer. Specifications 551,608 and 551,609 are referred to
Patent GB-567298-A (GB)
Title: Process for the dehydrogenation of organic materials
IPC: C07C5/333
Filed: 1943-04-09
Abstract: 567,298. Catalytic dehydrogenation. UNIVERSAL OIL PRODUCTS CO. April 9, 1943, No. 5756. Convention date, March 27, 1942. [Class 1 (i)] A dehydrogenation catalyst is prepared by evaporating to dryness a mixture of freshly precipitated hydrated alumina and a solution of a compound of a catalytically active substance, and further heating to convert the compound into the oxide &c. Preferably the mixture is produced by adding a precipitant to a solution containing an aluminium salt and the other compound and controlling the pH so that only the aluminium is precipitated. The catalytically active compound may comprise the metals of group IV, V, or VI, with or without zinc, cadmium, or magnesium, compounds such as ammonium molybdate being preferred. The precipitating agent should be a volatile base. The catalysts are suitable for reforming gasolines, for dehydrogenating or aromatising aliphatic hydrocarbons, &c. The production of butadiene and the conversion of ethyl benzene into styrene are referred to.
Patent GB-1386046-A (GB)
Title: Anthraquinone compounds their manufacture and use
IPC: C09B62/004
Filed: 1973-02-06
Abstract: 1386046 Anthraquinone reactive dyestuffs CIBA-GEIGY AG 6 Feb 1973 [7 Feb 1972] 5860/73 Heading C4P The invention comprises anthraquinone reactive dyes of the general formula wherein X 1  and X 2  are H or OH, Y 1  and Y 2  are H, halogen or a sulphonic acid group, A 1  and A 2  are H or C 1 -C 3  n-alkyl groups, B 1  and B 2  are sulphonic or carboxylic acid groups, V 1  and V 2  are H, halogen, alkyl or alkoxy, Z 1  and Z 2  are fibre reactive acyl groups and n and m are 1 or 2. They are prepared by sulphonating the terminal phenyl radical and acylating the N-atom linked to the terminal phenyl radical or by N- acylating the corresponding compounds where B 1  and B 2  are carboxylic acid groups. In a further method an anthraquinone compound having halogen or hydroxy substituents is reacted with a sulpho (or carboxy)-N-(acyl)- aminoalkylamine where the acyl radical is fibre reactive. The dyes dye wool, chlorinated wool, silk, leather, super-polyamides and -polyurethanes, cotton and regenerated cellulose materials
Patent GB-575786-A (GB)
Title: Improvements relating to guards for stock-bar machine-tools
IPC: B23B13/12
Filed: 1944-03-30
Abstract: 575,786. Machinery guards. CARTER, C. R., and ATKINS, F. E. March 30, 1944, No. 5863. [Class 80 (iv)] Relates to guard and safety devices of electrically-driven stock-bar lathes and other machine tools provided with a reciprocable feed tube and a guide tube for the stock. A guard 12, Figs. 1, 3, is secured to the detachable top plate (not shown) of the head-stock so that the two can be swung upwardly to allow of setting up. At the rear end of the guard is a double tubular-like part 13 with annular opening 14 to receive the adjacent end 15, Fig. 3, of the guide tube 16, Figs. 6, 8, or a part 22 thereon. Into this annular opening projects a spring-loaded ball 17, Fig. 5, which is pushed back when the guide tube is inserted to close a switch 18 in the motor circuit. The guide tube is slidably mounted in a support 31 which can turn about a vertical axis. The end 15 of the guide tube, Fig. 3, has offset V-notches 23 to position the tube angularly to keep a rod 30, Fig. 8, in correct position, the notches coacting with rollers 24, Fig. 5, in the annulus 14. At the outer end of the guide tube is pivoted a closure disc 26, Figs. 6, 8, which is urged to closed position about its pivot 37 by a spring 27 and, when closed, a flat face 29 on the disc arm 28 permits a spring- pressed rod 30 to lie thereover. The other end of the rod 30 is urged by the spring 32 against the support 31. When the guide tube is withdrawn, the rod 30 moves relatively thereto away from the face 29, thereby releasing the disc 26. If the stock bar 41 when inserted projects beyond the end of the tube 30, Fig. 8, the disc 26 would be forced open, whereby the edge 39 of its arm would obstruct the rod 30 and prevent the guide tube from being slid back to engage the guard 12.
Patent GB-326322-A (GB)
Title: Improvements in the manufacture and production of butylene from ethylene
IPC: C07C2/26
Filed: 1929-02-22
Abstract: 326,322. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 22, 1929. Butylene is obtained from ethylene (preferably liquefied) by treatment with boron fluoride or other inorganic volatilizable halide which evolves heat when treated with water. Surface active substances like finely divided nickel may be used in conjunction. Accelerators consisting of hydroxy compounds, e.g. water or alcohol, which can react to form hydrogen halide or organic halides, may be added. In an example liquid ethylene with ¢-2 per cent of gaseous boron fluoride is led at the rate of ¢-1 litre per hour under pressure through a tube containing 1 litre of a catalyst consisting of finely divided nickel on a suitable carrier substance, e.g. iron sponge, rings of refractory material, or burnt bauxite. 200 c.cs. of #- butylene per hour are obtained, and up to 1 litre per hour if the ethylene is saturated with water. Specifications 293,487 and 313,067 are referred to.
Patent GB-124898-A (GB)
Title: Improvements in Exhaust Silencers for Internal Combustion Engines.
Inventor: MARTIN WILLIAM HAMILTON
IPC: F01N1/16
Filed: 1918-04-06
Abstract: 124,898. Martin, W. H. April 6, 1918. Ventilating ships. - An exhaust-silencer c for marine engines may assist in ventilating the engine-room, the part c<1> being extended down to the deck and drawing air from the engine-room to mix with the exhaust from the nozzle d. The device may be arranged in the base of a funnel, provided at the top with annular louvers for directing any water that may enter into a central vertical pipe passing through the silencer to the bilges.
Patent GB-463895-A (GB)
Title: Improvements in, and relating to, apparatus for producing and supplying a proportioned mixture of fuel gas and air to burners
IPC: F23D14/60
Filed: 1936-02-27
Abstract: 463,895. Gas burners. BRITISH FURNACES, Ltd., and HOPKINSON, P. Feb. 27, 1936, No. 5936. [Class 75 (i)] In a mixing-device for gas burners of furnaces in which gas is admitted under control of a govemor m through a supply pipe k to an annular chamber e and is drawn through inlets v in a Venturi tube b by air under pressure passing through the tube, the gas supply to the chamber e is regulated by an outer hollow screw valve n co-operating with a seat o to provide a coarse adjustment and an inner needle valve q controlling an inlet r in a plug s to provide a fine adjustment. Perforated diaphragms 2, 3 may be provided in the discharge end of the Venturi tube and in the burner head y respectively. The valve n is fitted in a chamber h communicating through a lateral port with the chamber e and is closed at the outer end by a threaded plug w. The plug s can be changed for one having a smaller or larger inlet. The Venturi tube is connected with the head y by a pipe x fitted with a shut-off valve z.
Patent GB-795958-A (GB)
Title: An improved apparatus for controlling combustion conditions in an internal combustion engine
IPC: F16D13/64
Filed: 1955-02-28
Abstract: 795,958. Automatic control systems for I.C. engines. MINNEAPOLIS-HONEYWELL REGULATOR CO. Feb. 28, 1955 [March 1, 1954], No. 5959/55. Class 38 (4). In an automatic control system for an internal combustion engine a signal dependent on the difference between actual and desired values of engine speed is compared with a signal dependent on the difference between actual and maximum values of engine temperature, one or other of the two signals being selected, according to relative magnitude, to control fuel supply. A speed governor 45 associated with a gas turbine 10 adjusts a. potentiometer 42 so that any deviation in turbine speed from a value determined by the setting of a manually-controlled potentiometer 34 produces an output from a D.C. bridge 30 which normally corrects the speed deviation by adjustment of a fuel value 22 through an amplifier 111 and an electrically-controlled hydraulic servo-system. A thermocouple 73 responsive to combustion chamber temperature is associated with a biasing circuit 50 and produces through an amplifier 76 a D.C. signal which is representative of temperature deviation from a maximum desired value. If the speed deviation is excessive the voltage from bridge 30 is effective through an amplifier 46 to operate a changeover relay 100 so that the speed control is disconnected and the temperature deviation signal becomes effective to hold engine temperature constant at the maximum desired value by controlling fuel valve 22 through amplifier 111. The temperature deviation signal is at all times effective through an amplifier 70 to bias relay 100 so that the higher the engine temperature the less the speed deviation necessary to cause changeover to temperature control.
Patent GB-637921-A (GB)
Title: Improvements in magazine gramophones
IPC: G11B17/16
Filed: 1946-11-05
Abstract: 637,921. Magazine gramophones. HANSEN, H. C. Nov. 5, 1946, No. 5986/49. Divided out of 631,962 and addition to 631,962 and 637,856. [Class 40 (ii)] In a centre-post record support for a magazine gramophone as described in the parent Specification, the primary supporting member is replaced by separate supports 68 which protrude through slots in the guiding pin and are withdrawn by means of a member 50 having an annular groove engaged by hooked ends 66 of the supports 68. Further members 84, 86, which are of equal length and are displaced diametrically 90 degrees from the supports 68, Fig. 2, have similar hooked ends 82 which are in engagement with an annular groove 80 in a sleeve 74 which is pressed upwardly by a spring 76 so that the member 84 is pressed against the underside of the second record of the stack, while the similar member 86 acts as stop-member limiting the downward movement of the tooth 16.
Patent GB-589377-A (GB)
Title: An improved method and apparatus for removing suspended solids from liquids
IPC: B01D25/00
Filed: 1945-03-10
Abstract: 589,377. Removing solids from liquids. UNITED STATES HOFFMAN MACHINERY CORPORATION. March 10, 1945, Nos. 6028 and 6029. Convention dates, March 16, 1944. [Class 46] [Also in Group XXIX] A method of removing solids from liquids comprises feeding the liquid in a manner to facilitate settling of large solid particles, removing liquid at a place remote from the incoming stream and distributing it to filter units which are intermittently cut off from the supply of liquid and cleaned. As shown in Fig. 2, apparatus for cleaning coolant for grinding or cutting tools comprises a tank 2 divided by a partition 8 into two parts, the main part having an inlet pipe 18 for the coolant and four filter units 10a ... 10d. The coolant is fed between baffles 22, 26 and settled sludge is carried up an inclined wall 4 and removed by an endless conveyer 166 with scrapers 168. The units 10a, 10b are connected by a pipe 30 to a pump 32 and the units 10c, 10d are connected to a pump 38 whereby filtered liquid is delivered to the part 6 of the tank 2. In the event of the filters becoming clogged up, unfiltered liquid enters the part 6 through an opening having a weighted valve 164. An electric timer (not shown) is provided whereby such filter unit is in turn disconnected from its pump (32 or 38) and connected to a pipe 84 through which coolant and air for backwashing are supplied. A filter unit comprises six rows of springs 80, Figs. 3 and 5, each row being secured at the bottom by nipples 82 to a pipe 70 and at the top being threaded on to studs 81 an a channel plate 78. A valve 46 (see Group XXIX) is provided, the position of which determines whether filtered liquid is withdrawn through the pipe 70 or coolant and air are forced through the pipe for backwashing the filter. The operation of the valve is under the control of a solenoid 116 actuated by means of the electric timer. In a modification, the initiation of backwashing is effected by a switch which closes when a pressure gauge indicates that the filter unit is clogged up.