baber/WOPTO huggingface dataset:
Patent GB-1064063-A (GB)
Title: Improvements in digital data storage devices
IPC: G11C11/06
Filed: 1963-08-27
Abstract: 1,064,063. Circuits employing bi-stable magrietic elements. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug.27, 1963 [Aug. 27, 1962], No. 33796/63. Heading H3B. In a digital data store in which a drive/sense conductor is coupled to a plurality of bi-stable magnetic elements the drive circuit is isolated from the sense circuit by means of a diode which presents a high impedance to drive signals but a low impedance to sense signals. The single row of bi-stable cores 10, Fig. 1, is threaded by drive/sense winding BS terminated at one end through resistor ZR having an impedance equalling the characteristic impedance of BS to a reference potential and connected at its other end to drive signal generator DR and to earth through diode D, bias V and impedance ZL across which is connected sense amplifier SA. The combined impedance of ZL and diode D, when the latter is held slightly conductive, is approximately equal to the characteristic impedance of BS so that no unwanted reflections are allowed to pass along the line. Diode D is poled to prevent drive signals generated by drive DR from passing through ZL and appearing at sense amplifier SA. In order that sense signals induced in winding BS during the write phase may pass to sense amplifier SA without undue loss the diode D is biased slightly in the forward direction by V, Fig. 2 (not shown), so that the dynamic impedance of the diode is considerably less than ZL. In order to eliminate noise a balanced-toground sensing system may be used, Fig. 4 and Fig. 3 (not shown), wherein the noise produced in two winding segments is eliminated by mutual cancellation. In the core-per bit memory of Fig. 4 information is written into a bit 1 storage cell by coincident energization of one of the word windings W1-W8 and one or other of the bit sense windings BS1a or BS1b such that either the upper or lower core 10<SP>1</SP> of the selected pair is switched more than the other. During this writing operation the diodes D isolate the sense amplifiers SA1, SA2 from the driving circuits. Upon read-out both cores 10<SP>1</SP> of the pair are returned to their initial states by activation of the appropriate word winding W1-W8. Since the voltage in one bit-sense winding will be larger than the voltage induced in the other the half signals transmitted to the impedances ZL will be of opposite polarity but unequal magnitude so that the polarity of the net difference signal is indicative of the information stored. Noise which is common to the two windings BS1a and BS1b will be cancelled by the differencing action of the sensing circuitry. Fig. 5 shows a single bit plane of a three-dimensional array in which bit-sense windings BSa and BSb are provided, one coupling half of the cores of the plane and the other the remaining half. The cores may be replaced by thin films. Reference has been directed by the Comptroller to Specification 995,772.
Patent GB-1223023-A (GB)
Title: A pressure vessel having a rapid-release cover
IPC: B65D43/04
Filed: 1968-07-16
Abstract: 1,223,023. Pressure vessel closures. RHEINSTAHL HUTTENWERKE A.G. 16 July, 1968 [26 July, 1967], No. 33844/68. Heading F2P. A rapid-release cover 1 is securable in the flanged mouth 6 of a pressure vessel by a plurality of pairs of semi-cylindrical locking elements 9 and 10, one of each pair of locking elements being located in a semi-cylindrical pocket 7 in the cover and the other being located in a confronting pocket 8 in the flanged mouth, each pair of locking members being rotated about a common axis parallel to the vessel by a respective pivot pin 13 secured to one or other of the locking elements to lock the cover in position. Screws 11 and 12 are provided to lock the locking elements prior to insertion of the cover in the vessel and to subsequently re-lock the locking elements once they have been turned through 90 degrees to hold them in their locking position. Sealing is effected by a pressure ring 14 which is drawn against the base of a recess by screws 15, Fig. 6 (not shown), the conical inner and outer surfaces of the ring compressing metal wire sealing rings.
Patent GB-506993-A (GB)
Title: Improvements in or relating to spring suspensions for cycles
IPC: B62K25/28
Filed: 1938-11-21
Abstract: 506,993. Spring frames for cycles. AUTO UNION AKT.-GES. Nov. 21, 1938, No. 33857. Convention date, Nov. 19, 1937. [Class 136 (iii)] In a spring frame for motor and other cycles of the type comprising a pivoted fork 2 having its free ends connected to plates 7 mounted on the' wheel axle and adapted to move relatively to plates 8 on the main frame, the plates 7 have free or resiliently-counteracted longitudinal and lateral play relatively to the plates 8, whereby excessive stresses due to abnormal deformation of the parts under shocks are avoided. Each plate 7 passes through an aperture in the plate 8 with both transverse and longitudinal play, the plate 8 having flanges 9 to act as stops on excessive movement. The plates 7 are threaded over the wheel axle 10 and are secured to the fork arms 2 by screws 11, adjustment of the axle being effected by means of slots 20. The plates 7 have lateral cup-like extensions 16 in which are universally mounted balls 18 on washers 17 supporting coil springs 15, the upper ends of which engage bell-shaped'abutments 19 on the plates 8.
Patent GB-635650-A (GB)
Title: Keying systems for radio-frequency electric wave transmitters
IPC: H04L27/04
Filed: 1947-12-22
Abstract: 635,650. Keying carrier frequencies; valve generating and amplifying circuits. COMMUNICATIONS PATENTS, Ltd., and SPOONER, D. J. Dec. 22, 1947, No. 33874. [Classes 40 (v) and 40 (vi)] A keying-circuit for a radio transmitter comprises a valve amplifier with carrier applied across a cathode impedance and with output taken from its anode, the valve being opened and blocked by a key controlling the grid bias. As shown, the carrier is generated in the lefthand section of a double-triode valve V1 at the frequency of a crystal 4 and is fed to the cathode of the other section across the cathode resistor R2. Output is taken from a tuned anode circuit L2, C2. The grid is earthed for carrier frequencies by a condenser C3, and when the key 7 is open prohibitive bias is applied from a source 6 through resistors R3, R4. The earthed grid prevents capacity feed from cathode to anode. Closure of the key removes the bias, and amplified carrier is produced in the output circuit. The carrier generator may take other forms, e.g. that described in Specification 555,750, and amplifiers may be arranged on either side of the keyed stage. Switching arrangements may permit the selection of any one of a number of different frequencies. The output circuit L2, C2 may be shunted by a diode valve which is keyed into a conductive condition during spaces so as to absorb such energy as reaches the circuit despite the shielding effect of the earthed grid.
Patent GB-821546-A (GB)
Title: Apparatus and method for forming cartons and like containers
IPC: B31B3/28
Filed: 1955-11-25
Abstract: 821,546. Making cartons. BERGSTEIN, R. M., and BERGSTEIN, F. D. Nov. 25, 1955 [May 26, 1955], No. 33917/55. Class 18. The ends of a tubular carton are sealed by placing it on a mandrel, folding in and sealing the bottom closure flaps on to the mandrel in conventional manner, pressing carton wall portions adjacent the other end into recesses in the mandrel to form inwardly sloping portions, turning outwardly flanges attached to these portions, and removing the carton from the mandrel and sealing end closure flaps on to the flanges. A carton body as in Fig. 3, but with flap 17 folded on to closure flap 15 from which it extends, is placed on a mandrel 21, and closure flaps 6-9, with adhesive applied as necessary, are folded down and sealed by a presser plate 24. L-shaped bars 44, 45 are advanced to press portions 78-80 of carton walls 2-4 into recesses in the mandrel. During this last operation flanges 10-12 are bent about the edges 67 of a vertically reciprocable plate 60, and after the members 44, 45 reach their innermost position, the plate 60 rises to press the flanges 10-12 into recesses 68 in there members, Fig. 6. Flaps 15, 17 are pressed together by a plate 70 advancing against the mandrel 21, adhesive having previously been applied to one of these flaps. The carbon is removed from the mandrel and placed in a jig, Figs. 12-14 (not shown) with the combined flaps 15, 17 but backwardly and positioned between a pair of co-acting dies, Figs. 12-15 (not shown) which produce a flared mouth 102 round the pouring opening 18. The carton is then placed in a further jig, Fig. 17, comprising stationary plates 103, 104 and a moveable right-angled plate 105, which engage and align the carton walls 1-4. Bars 111, 112, similar to the bars 44, 45 then advance to underline and support the flanges 10-12, and the flaps 15, 17 are folded down on to them with the closure tab 16 extending in the vertical plane. A vertically reciprocating pressure plate 116, Fig. 22, having a slot 120 through which the tab 16 is passed and a depression 121 to accommodate the pouring opening mouth, presses the flaps 15, 17 on to the flanges 10-12, previously coated with adhesive. Projections 122 on the bars 111, 112 ensure sealing at the corners 123 where there are only two thicknesses of material. The described mechanisms are hand operated but the method may be carried out by automatic means (not shown). A blank may be tubed on the mandrel instead of a carton body being applied to it. The carton ends may be further sealed by wax &c. poured into cover them, the flared pouring opening permitting formation of a plug which adhere to the tab 16 when it is raised. Specification 819,355 is referred to.
Patent GB-453215-A (GB)
Title: Aprons for the working of materials sensitive to light
IPC: G03D13/14
Filed: 1934-11-30
Abstract: 453,215. Developing-apparatus. ENGEL, F., 7, Sturova, Bratislava, Czecho Slovakia. Nov. 30, 1934, No. 34394. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 5, 1935]. [Class 98 (ii)] Aprons for the development &c. of photographic films are provided at the edges with embossings which are of pyramidal, conical, spherical ellipsoidal or paraboloidal shape, the axes of the embossings being substantially parallel to the surface of the apron, and the surfaces of the embossings being inclined towards the middle of the apron at 1 to 45 degrees to the apron's surface. The aprons permit the whole surface of the film to be developed and may be employed with films of different sizes.
Patent GB-899594-A (GB)
Title: Improvements in electrical control systems
IPC: H02P7/34
Filed: 1959-10-12
Abstract: 899,594. Control of D.C. motors. GENERAL ELECTRIC CO. Oct.12, 1959 [Oct. 14, 1958], No. 34493/59. Class 38 (3). The speed of an electric motor 10 is directly related to the voltage of generator 11 as determined by the voltage across capacitor 13 coupled to the generator field winding 12 through magnetic amplifier 16. When a reference voltage derived from potentiometer 26 is greater than the capacitor voltage, the capacitor is charged from source 30 through resistor 31 and rectifier 32, the maximum voltage applied to the capacitor being limited by the reference voltage. The capacitor is charged at constant current by supplementing the voltage of source 30 by feed-back voltages from voltage divider 34 across the generator, tap 33 supplying sufficient voltage to pass the charging current through resistor 31, whilst the voltage derived from tape 35 is sufficient to pass the amplifier drain current through resistors 36, 22. Alternatively, the tap 33 may be adjusted to provide a part of the amplifier drain current, the tap 35 being then set at a lower value. The motor speed increases uniformly in proportion to the capacitor voltage until the reference voltage is reached and charging current is by-passed through rectifier 27. Similarly, the motor may be decelerated at a uniform rate, the capacitor being discharged through rectifier 37 and resistor 38 until the reference voltage is reached and the capacitor is prevented from further discharge by means of the rectifier 39. The motor may be started by initially setting tap 25 in a low-voltage position, and, after an interval, moving the tap to a full-voltage position. The system may be used for several motors driving a conveyer.
Patent GB-624726-A (GB)
Title: Improvements in or relating to combustion chambers
IPC: F23R3/20
Filed: 1946-11-21
Abstract: 624,726. Burners. EARL, A. G. Nov. 21, 1946, No. 34517. [Classes 75(i) and 75(iii)] [Also in Group XII] A pilot flame is maintained in a tube located in front of a combustion chamber 1, Fig. 1. The tube may comprise an open ended divergent tube 3 and a wide angled conical piece 5. A specific fraction of the total air flow in the inlet part 2 passes into the tube 3 and mixes with fuel supplied through pipe 4. A stabilised flame is formed in the conical piece 5 at a point determined by the air speed. The main fuel supply is by nozzles 8 in a ring main 7 down-stream from the stabilised flame zone. The pilot flame tube may be a single conical tube of a divergence between those shown for the tubes 3, 5. The fuel may be introduced by an axial pipe introduced at the down-stream end of the tube. In another form, Fig. 3, the metered air and fuel mix in a first conical tube 3a and the pilot flame is formed in a cylindrical extension 5a of a second conical tube 3b. A disc of gauze extends across the upstream end of the cylinder 5a.
Patent GB-1030255-A (GB)
Title: Capacitance to d.c. voltage converter
IPC: H02M3/338
Filed: 1964-08-24
Abstract: 1,030,255. Transistor amplifier circuits. ROBERTSHAW CONTROLS CO. Aug. 24, 1964 [Oct. 14, 1963], No. 34546/64. Heading H5T. [Also in Division G1] A capacitance to D.C. voltage converter comprises a transistor oscillator which includes a sensing capacitor of variable capacitance determining the amplitude of the oscillator output and a resistor through which quiescent transistor current flows, and a D.C. output circuit including in series a rectifying diode, a portion of the resistor and a winding inductively coupled to the oscillator. The transistor oscillator includes a transistor 10 connected in common emitter configuration with a resistor 30 connected between the emitter 12 and the D.C. supply, a tank circuit 18 connected between the collector and the D.C. supply and a positive feedback circuit 50. This feedback circuit incorporates the variable capacitance which is included as one of two capacitors 44, 46 in a bridge circuit whose other two arms consist of a tapped winding 42 inductively coupled to the winding of the tank circuit 18. This arrangement enables the system to be balanced by adjusting the other capacitor when the variable sensing capacitor is in its normal condition. When the bridge is unbalanced in one direction, the out-of-balance voltage fed to the transistor base will be such as to cut-off the transistor, while unbalance in the opposite (measuring) direction will provide greater positive feedback to the transistor so that the amplitude of oscillation will increase proportionately to the unbalance voltage. This amplitude is sensed by the coupled winding 56 and is rectified by the diode 58 to provide a proportionate D.C. output signal. To prevent the winding 56 loading the oscillator circuit too heavily, current is bled through the winding from a tapping on the resistor 30. This is proportional to the emitter current, and thus to the amplitude of oscillations in the tank circuit. Furthermore, in the event of too large an unbalance causing excessive positive feedback which produces quenched oscillations, the current from the resistor 30 will provide a D.C. output so that the circuit does not erroneously indicate a balanced condition during a quenched period. The diode 54 protects the transistor from the effects of large backvoltage peaks.
Patent GB-1392883-A (GB)
Title: Gaseous discharge devices
IPC: H03G11/00
Filed: 1972-07-25
Abstract: 1392883 TR switches WESTINGHOUSE ELECTRIC CORP 25 July 1972 [18 Aug 1971] 34671/72 Heading H1D An electrodeless gaseous discharge device suitable for use as a radar receiver protector comprises a capsule 30, an ionizable gas within said capsule, and Ti or Y having adsorbed therein tritium providing a source of primary radiation for said discharge device. The capsule 26, e.g. of quartz comprises a cup-shaped portion 30 and a capillary portion 24. Molecular tritium is adsorbed into a film 32 of Ti or Y vacuum-deposited on a quartz cover-plate 28. A layer 34 of TiO 2  or Y 2 O 3  is formed on the undersurface of layer 32 by aging in an oxygen atmosphere. Finally a layer 36 of SiO 2  is deposited over layer 34. The capsule is filled with a halogen, preferably chlorine at a pressure of about 10<SP>-4</SP> torr, and is inserted through the wall of a waveguide so that the capillary 24 lies in a gap 20 formed in an iris plate 12 to form a protector for a radar receiver.
Patent GB-990731-A (GB)
Title: Improvements in apparatus for producing flexible laminated material
IPC: B32B27/00
Filed: 1960-10-10
Abstract: 990,731. Coating apparatus. B. G: MARTINDILL. Oct. 10, 1961 [Oct. 10, 1960], No. 34673/60. Heading D1L. Apparatus for producing flexible laminated materials comprises means e.g. traction rollers 25, 26 for drawing a laminar base material 5 firstly through a bath 2 containing fluid plastic material to provide a coating of the plastic material thereon, and secondly through a nip between two rollers 11,12 in an upward direction 5a, while the coating of plastic material is fluid, means for driving the rollers 11, 12 in directions such that the surface of each roller moves at the nip in a direction contrary to that in which the laminated material moves at the nip, and means for cooling the plastic material to solidify it after it has passed through the nip e.g. a colling chamber in tow 6 and by cooling rollers 25, 26 by passing water therethrough. The rollers 11,12 may be spaced apart horizontally, the space between them being adjustable, and are positioned above the bath 2 and the laminated material is drawn vertically upwards from the bath to the nip between the rollers along a path which is disposed symmetrically with respect to the rollers. A doctor blade 44 may be provided for each roller 11, 12, each doctor blade bearing against the cylindrical surface of the corresponding roller to prevent fluid plastic material being carried around the roller to the laminated material which has passed through the nip. Heating means e,g. infrared heaters 7, 7a, may be provided to heat the plastic material to cure it as it passes from the nip to the cooling means. The plastic material may be thermosetting or thermoplastic e,g. polyvinyl chloride. The base material may be glass cloth, textile fabric, paper or other cellulosic material.
Patent GB-1216791-A (GB)
Title: Esters of chlorophenols
IPC: A61K31/24
Filed: 1969-07-09
Abstract: 1,216,791. Chlorophenol esters. PROGIL. 9 July, 1969 [15 July, 1968], No. 34701/69. Heading C2C. Esters of chlorophenols and carboxylic acids are prepared by reacting the chloroformate of the chlorophenol with the carboxylic acid at 150-250‹ C. The chloroformate ester used as starting material, e.g. pentachlorophenyl chloroformate may be prepared by reacting phosgene with an aqueous alkaline solution of the chlorophenol at 10-40‹ C. in an organic solvent. Examples are given of the preparation of (a) pentachlorophenyl propionate; (b) 2,4,6-trichlorophenyl propionate; (c) 2,4,6-trichlorophenyl laurate; (d) pentachlorophenyl laurate; (e) 2,4,6-trichlorophenyl stearate; and (f) dipentachlorophenyl succinate.
Patent GB-1240770-A (GB)
Title: Ammonium perchlorate gas producing or explosive compositions
IPC: C06B23/00
Filed: 1969-07-10
Abstract: 1,240,770. Explosive and gas producing compositions. RESEARCH CORP. 10 July; 1969 [15 July, 1968], No. 34734/69. Heading C1D. An explosive or gas producing composition comprises ammonium perchlorate, at least 5% by weight of ammonium nitrate, at least 0.003% by weight of a metal, in elementary form or as a compound, and at least one chloride anion per metal atom in excess of the number which would be present by adding the metal as its chloride, the metal having a standard oxidation potential of not more than 2.0 volts. The preferred metals are Cr, Cu, Ag, and Ni, but reference is also made to Fe, Au, Pd, Co, Ce, Zr, Ti, Pb, Mn, Hg, Bi, Pt, Zn, Cd, and Al. Suitable metal compounds and nitrates, carbonates, sulphates, chromates, and dichromates, e.g. potassium dichromate or copper chromite. The chloride anion may be added as sodium, potassium, or ammonium chloride.
Patent GB-605521-A (GB)
Title: Improvements in or relating to interlocked enclosed electric switchgear
IPC: H01H9/22
Filed: 1945-12-28
Abstract: 605,521. Switch cases. WALSALL CONDUITS, Ltd., and PRICE, A. E. Dec. 28, 1945, No. 35023. [Class 38 (v)] The interlocking arrangement described in Specification 470,191, wherein the covers 16, 17 of a box 27 containing switches 13, and fuses 15 are locked by bolts 30, 31, is modified in that the switches can be operated by handles 25 outside the cover, independently of the bolt-operating handles 33, which turn cams 35 inside the box, and move endplates 38, carrying a frame 40, downwards so as to force all the switches off and hold them there. In another embodiment, Figs. 6, 7, (not shown), after the switches are all in the off position, the frame 40 is moved sideways as the bolts are withdrawn, and projections 41 hold the switch off. The Specification states that the frame may alternatively be moved by a push-pull member, which may engage lugs inside the cover to lock it.
Patent GB-1188957-A (GB)
Title: Process for the Production of Beadlets.
IPC: A61Q13/00
Filed: 1967-07-31
Abstract: 1,188,957. Making beadlets. SUMITOMO CHEMICAL CO. Ltd. 31 July, 1967 [30 July, 1966; 11 Aug., 1966 (2)], No. 35155/67. Heading A5B. [Also in Division B8] Pharmaceutical and like beadlets or microcapsules are produced by forming an emulsion or dispersion of an active substance in an aqueous solution of a gelable hydrophilic material, dispersing the resultant emulsion or suspension in a solution in a water-immiscible liquid containing a surface active agent, the temperature of the said solution being above the gel-point of the dispersed material, and cooling the system to below the gel point of the dispersion. Thereafter, the beadlets formed may be hardened e.g. by treatment with formaldehyde, and a metal salt, an alkanol or a water absorbing or adsorbing solid substance such as casein, crystelline cellulose, CMC, ZnO, SiO 2 , Mg, Ti, Al and Ba sulphates, CaCO 3 , MgCO 3 , silicic acid and silicates. Suitable gel-forming agents are gelatin, agaragar, albumin, alginates, casein, pectin and fibrinogen. The surface-active agent is preferably non-ionic but may also be cationic or anionic and suitable liquids in which they may be dissolved include animal, vegetable and mineral oils, aromatic hydrocarbons, e.g. benzene, toluene and xylene, chlorinated hydrocarbons e.g. CHCl 3 , CCl 4  and trichloroethylene and organic solvents e.g. ether, petroleum ether and methyl-ethyl ketone. Reference is made to numerous "active substances" largely medicaments but also, dyes, fertilizers, pesticides, rodenticides, anthelmintics, vitamins and other food supplements.