baber/WOPTO huggingface dataset:
Patent GB-1438001-A (GB)
Title: Fire safety systems
IPC: E04F17/04
Filed: 1973-06-26
Abstract: 1438001 Fire safety system in a building K G SMOKE DISPERSAL Ltd 21 June 1974 [26 June 1973] 30345/73 Heading ASA A fire safety system in a building having a plurality of accommodation units 7', 8', 9..14 and a plurality of communal units 6, 7 and 8 providing means of access to the accommodation units wherein the accommodation units are not bonded by any exterior walls of the building and have no communication with the walls except through the accommodation units, comprises a plurality of smoke detectors 19, 20 and 21 in the communal units which on detection of smoke actuate fans 22, 23 and 24 to blow air under pressure into each communal unit, a plurality of self closing fire stop doors 15 to 18 between each communal unit and the adjacent communal unit, the doors normally being held open by electromagnetic locks 25 to 28 which are released by the smoke detectors on detection of smoke in order to restrict passage of smoke from a communal unit in which smoke has been detected to another communal unit. The fan 23 in shaft 1 is two speed and feeds air at low speed into 6 under normal conditions but on actuation by the smoke detector goes to the higher speed. Fans 22 and 24 under normal conditions suck air out of 7 and 8 into shafts 1 and 2 but on actuation by the smoke detector reverse their direction and blow air into the units. Each accommodation unit may be provided with unidirectional ventilators to allow air and smoke to leave the building.
Patent GB-1033006-A (GB)
Title: Contact for transformer tap-changers
IPC: H01H9/00
Filed: 1963-07-31
Abstract: 1,033,006. Switch contacts. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. July 31, 1963 [Aug. 3, 1962], No. 30355/63. Heading H2B. A contact for a transformer tap-changer comprises an annular torus 4 of circular crosssection having an annular aperture 5 for cooling purposes (Fig. 2, not shown). The contact is tapered at 15 towards the aperture 5. Spring-pressed contact bridges 9, 10 are moved in the direction of arrow 14 to contact the torus 4, which is mounted on an insulating bar 1 in a cylindrical tap-changer cage. In a multiphase tap-changer several contacts 4 are engaged by several bridges 9, 10 carried on a rotatable shaft, the contacts being arranged in horizontal planes and in vertical rows mounted on the vertical insulating bars 1. In order to increase the leakage paths between contacts 4 on the same bar 1, the contacts have projections 6, 7, extending respectively upwardly and downwardly.
Patent GB-646013-A (GB)
Title: Improvements in or relating to high frequency electric heating systems
IPC: H05B6/50
Filed: 1946-10-11
Abstract: 646,013. Automatic control systems for H.F. heating. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 11, 1946, No. 30389. Convention date, Oct. 12, 1945. [Class 38 (iv)] In an H.F. dielectric or induction heating device the changes in the electric properties of the load, e.g. the dielectric constant or permeability, due to a rise in temperature, are automatically compensated by adjustment of either the load circuit or the H.F. source. As shown, Fig. 1, the thermionic oscillator 1 supplies, via the transmission line 12, the dielectric load 11 which, with the inductance 15, and condenser 18, forms an oscillatory circuit. Deviations in the resonant frequency of the circuit 11, 15, 18, from a datum value, normally that of the oscillator 1, are compensated by adjustment of the condenser 18 by the magnetic core 34 movable within coils 32, 33 in correspondence with a D.C. signal across resistors 24, 25 of polarity dependent upon the sign of the deviation of the resonant frequency of circuit 11, 15, 18 from the datum value. Alternatively, capacity 4 may be controlled by member 34. In a second embodiment, not shown, induction heating is effected by a circuit similar to Fig. 1, while in a third embodiment, (not shown) ,the load circuit is connected directly across the source oscillator tank circuit, a voltage across a part of which is rectified and applied to the grid of a valve, the anode circuit of which includes the adjusting parameter. Alternatively, the supply of power to the load may be controlled by adjustment of the anode voltage of the source oscillator.
Patent GB-137796-A (GB)
Title: Improvements in or relating to carburetters
IPC: F02M9/12
Filed: 1919-12-05
Abstract: 137,796. Wyllie, R. Dec. 5, 1919. Spray carburettors.-In a carburettor having a nozzle 4 composed of fibrous material such as cane, the mixture outlet is controlled by an iris diaphragm 1 operable by a lever 3.
Patent GB-687357-A (GB)
Title: Foam-producing composition and method of preparing same
IPC: A62D1/02
Filed: 1949-11-28
Abstract: Aqueous solutions of partially hydrolysed proteins for use in fire-fighting compositions (see Group XXI) are rendered resistant to mould and bacteria by dissolving therein a solution of 2,4,5-trichlorphenol in a water-soluble organic solvent, the phenol being present in an amount of at least 0.05 but preferably not more than 3.0 per cent by weight based on the final composition. Specified solvents are glycols such as ethylene, propylene, diethylene and triethylene glycols; alcohols such as methyl, ethyl and propyl alcohols; glycerine; mono-ethers of glycols such as the methyl and ethyl ethers of ethylene and propylene glycols; urea-water mixtures.  The foam-producing agent may be prepared by acid, alkaline or enzymic hydrolysis of the proteinaceous material found in horns, hoofs, hair, blood, fish meal, distillery waste, soya meal, pea meal, corn meal and the like.  Preferably, the hydrolysis is effected with lime or other alkaline earth metal hydroxide and the product neutralized by means of free acid or a water-soluble material which furnishes ammonium ions and anions capable of forming an insoluble salt with the alkaline earth metal.  In examples, starch-free corn gluten is partially hydrolysed with lime, then the pH is adjusted to 6.5-8, the solution is concentrated and a hot solution of ferrous sulphate (foam stabilizer) added thereto and there is dissolved in the resulting solution a solution of the phenol in (1) ethylene glycol mono-ethyl ether; (2) ethylene glycol; (3) and (4) urea-water mixtures; and (5) urea-ethylene glycol-water mixture respectively. The effectiveness of the trichlorphenol is compared with that of various other bactericides.
Patent GB-690275-A (GB)
Title: Improvements in or relating to apparatus for harvesting under-water seaweed
Inventor: HAY JOHN MORRISON
IPC: E02F3/08
Filed: 1948-11-23
Abstract: 690,275. Gathering seaweed. SCOTTISH SEAWEED RESEARCH ASSOCIATION. Nov. 23, 1949 [Nov. 23, 1948; Dec. 25, 1948], Nos. 30463/48 and 33335/48. Class 6(iii) An apparatus for gathering seaweed comprises an endless conveyer A extending between a surface vessel 7 and the seabed and carrying cross-bars fitted with hooks 3 for engaging the weed. The conveyer is driven in the opposite direction to the travel of the boat to avoid entanglement of the hooks 3 by irregularities. Chain netting 4 extends between the cross-bars and the lower end of the conveyer is likewise encased in netting 11 to avoid entanglement of weed with the driving sprockets. In a modification, Fig. 3, the conveyer runs athwart the boat with its lower run trailing over the sea-bed. In further modifications, the conveyer may be suspended laterally from a derrick or mounted between the boat and a floating buoy. Brushes or like stripping means may co-operate with the belt to remove the weed. Slipping clutches and shear-links may be included in the drive to allow for stoppages. The motion of the hooks may be used to propel the boat.
Patent GB-756030-A (GB)
Title: Improvements relating to the construction and operation of precision balances
Inventor: CLARIDGE FREDERICK ARTHUR
IPC: G01G1/00
Filed: 1952-12-01
Abstract: 756,030. Weighing-apparatus. STANTON INSTRUMENTS, Ltd. Dec. 1, 1953 [Dec. 1, 1952], No. 30464/52. Class 143 A precision knife edge balance of the type including relieving mechanism, effective when actuated to relocate the knife edge on its bearing, is adapted for continuous weighing by automatically actuating the relieving mechanism momentarily at predetermined intervals during a weighing operation. The relieving mechanism consists of a rod 12 sliding in a hollow pillar 7 to raise a platform 15 and arms 16 which have V notches engaging a transverse spindle on the beam 1 to lift the main knife edge clear of its bearing. The platform 15 is provided with pairs of pillars 18 and 19, the pointed ends of which engage one a V notch and the other a cone formed in the under face of the pan suspending pieces. The mechanism also includes plungers 20 to lift the pans 21. These plungers and the rod 12 are actuated by cams 22, 13 on a shaft 23 intermittently rotated by a synchronous electric motor 29. The motor also drives an interruptor cam through 2:1 gearing so that the shaft 23 will rotate through 360 degrees each time the motor is energized. The motor may be energized either from contacts actuated by a timing cam (Fig. 4, not shown), driven by a second synchronous motor, or from contacts actuated by a thermal interruptor (Fig. 5, not shown).
Patent GB-1223648-A (GB)
Title: Solution conductivity measuring apparatus
IPC: G01N27/04
Filed: 1969-06-17
Abstract: 1,223,648. Measuring fluid conductivity. BECKMAN INSTRUMENTS, Inc. June 17, 1969 [June 24, 1968], No.30556/69. Heading G1U. In fluid conductivity measuring apparatus in which the impedance of a conductivity cell 12 is measured, provision is made for testing the cell for electrode deterioration, manifested as a finite so-called polarization capacitance appearing in series with the resistance of the fluid under test, by simulating an increase in the polarization capacitance. Preferably, the measuring apparatus also compensates for the polarization capacitance. Fig. 1 shows apparatus for both testing and compensating for the polarization capacitance. The cell 12 is energized from a voltage-regulated A.C. supply VR. The current through the cell, which depends on its impedance, is measured by means of current transformer 13, amplifier 14 and meter 16. The current supplied to the meter is rectified by a synchronous switch 15, controlled by the output of a network 17 so as to be closed for alternate half cycles of that output. Network 17 provides an output shifted in phase by an angle # relative to supply VR. Thus with no polarization half-cycles of the signal from transformer 13 (curve A<SP>1</SP>), Fig.3, do not coincide with the periods for which switch 15 is closed (outer vertical lines in Fig.3). As polarization increases the transformer signal decreases in magnitude because of the increased impedance of the cell, but simultaneously it moves into closer phase agreement with the switch-closed periods because of the decreased power factor of the cell thus tending towards curve B<SP>1</SP>. Since meter 16 responds to the mean signal, these two effects tend to be mutually cancelling, and thus the meter reading is substantially independent of the polarization of the cell. Curve B<SP>1</SP> represents the limit for which compensation is achieved, since with further polarization (e.g. curve C) the above effects become additive. The cell testing facility comprises a normally short-circuited capacitor 18 in series with the cell which enables the polarization capacitance to be artificially reduced, simulating increased polarization. If, when switch 19 is opened, there is no significant change in the meter reading, then it is known that even with the artificially-increased polarization the condition represented by curve B<SP>1</SP> has not been reached, and therefore the cell is in good condition. In another embodiment, Fig.4, (not shown) the compensating arrangement 15, 17 is omitted and an A.C. meter is used at 16. In this case there will always be a drop in meter reading when switch 19 is opened, but because the meter reading depends on the cosine of the angle between the resistive and reactive components of the impedance of cell 12 and capacitance 18 in series, the drop in reading will only be appreciable when the polarization capacitance is significant.
Patent GB-157625-A (GB)
Title: Improvements in ink distributing apparatus for platen printing machines
IPC: B41F1/40
Filed: 1919-12-09
Abstract: 157,625. Marzio, A. Dec. 9, 1919. Inking - apparatus. - Travelling inking- apparatus for platen machines is provided with longitudinally reciprocated distributing - rollers mounted on movable bearings so that they may be in contact with the inking rollers in all positions, and distributing-plates are arranged as extensions at one or both ends of the forme. Distributing-rollers B are journaled in frames a pivoted at c on rods b pressed inwardly by springs d so that each roller B may remain always in contact with two inking-rollers A. The rollers B have extended axles p, p<1>, which may be provided with antifriction balls, engaged at the ends p by springs M and moved at the other ends p' by a camplate L on the operating-rod D of the machine. Distributing-plates P extend from one or both ends of the forme F to continue the rotation of the inking and distributing rollers after they move off the forme.
Patent GB-1148363-A (GB)
Title: Improvements in or relating to optical projectors
IPC: G03B21/132
Filed: 1967-07-04
Abstract: 1,148,363. Optical projectors. ERNST LEITZ G.m.b.H. July 4, 1967 [July 6, 1966], No.30840/67. Heading G2J. An overhead projector has a deflecting mirror 6 which directs light from a fixed lamp and condenser system 1, 3, 4 downwardly on to a transparent or translucent information bearing strip 7 extending between two spools, a reflecting Fresnel lens 8 beneath the strip directing a light beam towards the projection system 9 which may be vertically shifted for focusing, or tilted about spindle 13 to raise the projected image. Mirror 6 may be a diffusing surface. Hand-writing on the surface of strip 7 may be projected. Lenses 11, 12 of system 9 may have the same shape as the sheet 7.
Patent GB-193150-A (GB)
Title: Improvements in or relating to variable inductance devices
IPC: H01F27/00
Filed: 1921-11-18
Abstract: 193,150. Burnham, W. W. Nov. 18, 1921. Inductances.-In variable electric couples or inductance devices for wireless signalling, of the kind in which the inductive distance between two coils is varied by rotation of one coil about an axis external to the coil and lying in a plane through the coil and perpendicular to its axis, the moving coil is mounted on a supporting element axially rotatable by manual rotation of a spindle operatively connected to and parallel to the axis of the supporting element, and of sufficient length to avoid approach of the hand to the coils in operation. Any number of fixed and movable coils may be used. In the form shown in the Figure, the device comprises a base 5 and brackets 7 carrying a fixed element 2 supporting the fixed coil with its axis horizontal and a rotatable element 3 supporting the movable coil. A shaft 15 manually rotatable by means of a milled wheel 4 is geared to the element 3 by a pinion 14 on the shaft 15 engaging with a pinion 12 or a semi-circular rack on the element 3. the movable coil on the element 3 being adjustable to and from an extreme position in which the coils are coaxial. The elements 2, 3 each ,carry a plug 11 and a socket to receive a coil and screws or other terminals connected to similar terminals on the base 5 to connect the coils in circuit. The shaft 15 and element 3 may be geared together by worm and wheel gearing or otherwise, or the element 3 may be fixed directly on the shaft 15. In a modification provided with one fixed coil and two movable coils. a. supporting element for a second movable (oil, similar and similarly operated to the element 3. is provided on the side of the element 2 opposite to the element 3.
Patent GB-385071-A (GB)
Title: Improvements in or relating to methods of and apparatus for producing soluble phosphate from phosphate rock
IPC: C05B1/10
Filed: 1931-11-07
Abstract: Soluble phosphate is obtained by kneading a mixture of powdered phosphate rock and acid by progressively feeding the mixture to a point of discharge while working the mixture and retarding the progress thereof.  The kneading may be continued until the mass has almost solidified.  In carrying out the process, powdered rock, conveyed up an elevator 2, passes through a rotary valve 4 to mixing device 22.  Excess dust escapes through shoot 5.  Acid, for example, 56-57 DEG  B<\>ae. sulphuric acid, from tank 6 is pumped to supply tank 10.  The motor 8 operating pump 7 is controlled by float-operated control 12.  The acid flows to measuring tank 18 and thence through valve 19 to the mixing device 22.  Overflow pipes 16, 20 are provided.  The mixing and kneading device 22, 21 comprises a covered casing in which is mounted a shaft 26 with attached kneading paddles.  These may be attached spirally, Fig. 1, or as shown in Fig. 4.  Groups of paddles 28a, Fig. 1, 28b, Fig. 4, are arranged at a reverse angle to the remainder to retard the mixture.  The paddles 25 of the mixing device are mounted on a hollow shaft 23 carried by shaft 26.  By suitable gearing, the former shaft is rotated at a higher speed than the latter.  A scraper may be periodically operated within the mixing and <PICT:0385071/III/1> <PICT:0385071/III/2> <PICT:0385071/III/3> kneading device.  The mixture passes through outlet 29 to a stationary curing den, or preferably to a den comprising three endless slat belts 31, 32, 33 and an end baffle 41. Blocks 37 provided on the lower belt constitute guide surfaces for the side belts.  The upper edges of the side belts are each provided with a tapered guide-bar sliding in a groove in the depending edges of a cover 30, Fig. 3.  The solidified mass is disintegrated by a rotary cutter 43 provided with curved blades 46, or staggered spikes. Fumes are removed from the kneading device and optionally from the curing den by a fan 49.  The initial mixing may be effected in a batch mixer.  Specification 378,364, [Group XXX], is referred to.
Patent GB-341102-A (GB)
Title: An electric indicator or signalling device for personal wear
IPC: G08B5/36
Filed: 1929-10-11
Abstract: 341,102. Electric battery lamps. BEAUMONT, A. T., 20, Brewer Street, Regent Street, London. Oct. 11, 1929, No. 30961. [Classes 39 (ii) and 75 (iii).] Supporting.-An electric battery and lamp unit for use by pedestrians to indicate their position to vehicles comprises a casing a holding a battery and fitted with an extension e having a plurality of windows f adapted to direct the light from a bulb b in a number of different directions. A window may also be provided at the top of the extension. In place of the extension e, the projecting lamp b may be covered with white and red transparencies showing red to the rear and white to the front. Spring clips g, h or other devices are provided to secure the lamp to the arm. The clip g may be pivoted so as to fold against the side of the casing, and may be adjustable, the clip being preferably formed in two parts, the inner overlapping ends of which are adjustably secured to the lamp.
Patent GB-675360-A (GB)
Title: Improvements in or relating to carbocyanine dyes and to photographic silver halide emulsions sensitized therewith
IPC: C09B23/06
Filed: 1950-12-19
Abstract: 2-Methyl-5-carboxybenzoxazole is prepared by heating together 3-amino-4-hydroxybenzoic acid and acetic anhydride.
Patent GB-684152-A (GB)
Title: An improved means for booking or indicating the availability of seats in theatres, cinemas, or similar establishments
IPC: B42D15/00
Filed: 1948-11-30
Abstract: 684,152. Labels; ticket books. BOON, J. W. Nov. 30, 1948. No. 31064/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 30, 1949] Classes 16 and 73. [Also in Group XIX] A booking floor plan for a theatre, cinema, &c., comprises a back sheet or support 4, Fig. 1, having sets of detachable tabs 12 thereon, individual to different parts of the theatre and correspondingly disposed on the back sheet, said tabs being marked to identify them with corresponding seats in the theatre. The tabs 12 which are doubled over form part of a continuous sheet 5 which is glued along strips 6 to the back sheet 4. Tear-off perforation lines 7 and 8, Figs. 1 and 2, extend across each row of tabs. Longitudinal tear-off perforation lines separate each tab. The tabs serve as theatre tickets and the front part of each tab is marked to indicate the corresponding row and seat whereas the back serves as a receipt for the reservation charge. The reservation charge is taken off, say half an hour before the show is to start, the rows of the remaining tabs are slit by a knife and thereafter only the front part of each tab is sold. In another embodiment, Figs. 3-5 (not shown), the front part of each tab is marked to denote the corresponding seat and row number and the back part is marked to denote the theatre, date and the time of the start of the show. The front part of the tab below tear-off perforation the line is also marked to denote the seat and row. In this embodiment the tabs bearing the same seat number are arranged in rows with each succeeding row overlapping the previous one. A second perforated line extends across the front part of each tab so that a stub portion may easily be torn off. Specification 633,548 is referred to.
Patent GB-364706-A (GB)
Title: Improvements in and relating to x-ray apparatus
IPC: H01J35/32
Filed: 1930-10-17
Abstract: 364,706. R÷ntgen-ray tubes. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Coolidge, W. D. ; 36, Bedford Road, Schenectady, New York, U.S.A.) Oct. 17, 1930, No. 31152. Convention date, Oct. 18, 1929. [Class 39 (i).] A tube for internal therapy has an envelope consisting of glass and metal cylinders sealed together, the metal cylinder being tapered down to a tube small enough to be inserted into body cavities, an anode mounted in the closed end of the smaller portion and a cathode mounted in the larger portion of the metal cylinder. As shown, a metal cylinder 3 is sealed at one end to a glass tube 1 and is tapered at the other end and sealed to a cylinder 4 of copper, nickel, or platinum, which extends into the cylinder and is closed by a metal plug 5 carrying a target 6. The cathode 9 and focusing cup 8 are mounted within the cylinder 3. A window 18 of chromenickel steel is brazed to a member 19 of nickelsteel. which is silver soldered to the tube 4. A copper tube 20 for the circulation of cooling water is soldered around the tube 4.
Patent GB-781541-A (GB)
Title: Improved dispensing device for dispensing pastes, liquids and the like
IPC: B65D47/20
Filed: 1955-11-01
Abstract: 781,541. Container closures. MOIR, D. A., and WEBBER, G. G. Nov. 1, 1955 [Nov. 15, 1954], No. 31165/55. Class 125(3). A dispensing and closure device for collapsible tubes &c. consists of a rubber tubular member 1 with an outer end 2 provided with a slit 3 forming a non-return valve and a coupling member 4 internally screw-threaded to allow reversible coupling with the container neck, the parts being held together by the co-operation of a ridge 5 and annular flanges 6, 6a or formed integrally, Fig. 3. To seal the container the inverted tubular member 1 is inserted in the neck and the member 4 screwed on to the neck. In a modification, Fig. 4, the inverted device forms a plug stopper without screw attachment and in another similar modification the parts are integral instead of being separate.