baber/WOPTO huggingface dataset:
Patent GB-971097-A (GB)
Title: Electrophoretic printing
IPC: C25D13/00
Filed: 1962-11-12
Abstract: 971,097. Printing processes. CARTER'S INK CO. Nov. 12, 1962 [Nov. 15, 1961] No. 42585/62. Heading B6C. A sheet 12 is printed by placing a source sheet 10 having at one surface a fluid phase containing relatively electrically charged mobile particles of a detectable material in surface-to-surface contact with the recipient sheet 12 having at its contiguous surface a fluid phase, placing electrodes 14 and 16 on opposite sides of the sheets and setting up an electrical field therebetween to cause at least some of the particles to transfer from the sheet 10 to the sheet 12 in a predetermined pattern. The upper electrode 16, Fig. 1, may be in the form of a character the shape of which is thus transferred to the sheet 12. The sheet 10 is impregnated with an aqueous solution of a charged dyestuff, examples of which are given, and the sheet 12 is impregnated with a potassium chloride solution or with water. In the embodiment of Fig. 6 the source sheet 10 is impregnated with four dyes of different mobilities and polarities and recipient sheets 12h, 12i and 12j are located above it and sheets 12g, 12f and 12e below it; the whole assembly being located between a base electrode 14 and a character electrode 16. The cationic yellow die and the anionic red dye printed on sheets 12e and 12j respectively since these dyes are of greater mobility. Reversing the direction of the applied D.C. potential causes the dye ions to migrate in the opposite direction and if the recipient sheets are only on one side of the source sheet causes the printing to be erased. Stencilling apparatus.-In the embodiment of Fig. 3, the electrodes 14 and 22 are coextensive and the shape of the pattern transferred from the sheet 10 to the sheet 22 is determined by a stencil 20 having cut-out areas 21. Hidden printing.-Counterfeit detection is illustrated in Fig. 9 in which a ticket, having identifying characters in a charged dyestuff which are obscured by the background, is applied to a moistened sheet in the presence of an electrical field. The characters are thus rendered visible on the moistened sheet. The code characters may be obscured within printed visible characters forming part of a serial number ordinarily appearing on the ticket. The material removed electrophoretically during identification may be replaced by reversing the current.
Patent GB-968280-A (GB)
Title: Improvements in or relating to a circuit arrangement for varying the frequency of a tuned circuit
IPC: H04N5/50
Filed: 1960-12-12
Abstract: 968,280. Automatic frequency control systems. TELEFUNKEN A.G. Dec. 12, 1960 [Dec.11, 1959], No. 42614/60. Heading H3A. A U.H.F. oscillator comprises a valve with anode connected through a capacitor 2 to a lead 3 connecting with a trough line resonator 4 whose central conductor is connected to earth (wall of the trough) at both ends of the resonator 4 through tuning and anti-node positioning capacitors 6, 7 and 8 respectively and a back biased semi-conductor variable capacitor 11 in series with a capacitor 10 is connected between earth and a selected point 14 of the lead 3 so that a control bias U R  is effective to vary the oscillator frequency linearly over a wide tuning range, e.g. 470-790 m/cs. The point 14 may lie about half-way between the capacitor 2 and resonator 4, and the diode 11 and capacitor 10 may be interchanged in position. Variation in loading and oscillation amplitude as the diode capacity is varied may be counteracted by a parallel R-C circuit 15 providing self-bias on the valve grid. The oscillator may be part of a self-oscillating mixer producing a receiver I.F.
Patent GB-1160677-A (GB)
Title: A Protectice Bottom Ring for a Hot Top for an Ingot Mould
IPC: B22D7/10
Filed: 1966-09-26
Abstract: 1,160,677. Ingot hot tops. INGOT AID CO., Inc. 26 Sept., 1966 [18 July, 1966], No.42782/66. Heading B3F. A refractory bottom ring 3, attached to a metal hot top casing 1, has a surrounding rib 4 (which ensures a snug fit in an ingot mould, being at least partly sheared off on insertion) and is covered on its exposed faces by a wrapping of flexible sheet 7 of steel or aluminium foil or heat resistant plastics material, paper or fabric held in place, if necessary by adhesive or fasteners, the edges engaging the top of the ring 3. Panels 5 lining the casing 1 may also be covered by such a sheet 8. Apparatus for wrapping a refractory ring 3 in sheet material is described, Figs. 3, 4 (not shown). A ring of foil (7) is placed on an inverted ring (3) and when a head (11) is lowered, spring-loaded segments of wrapping- rings (17, 18) are first urged apart by their bevelled edges moving on the foil and ring (3). The springs then bring them together to clasp the foil around the ring (3).
Patent GB-1208709-A (GB)
Title: Photoflash lamp
Inventor: SHAFFER JOHN W
IPC: F21K5/14
Filed: 1969-08-28
Abstract: 1,208,709. Explosive compositions. SYLVANIA ELECTRIC PRODUCTS Inc. 28 Aug., 1969 [28 Aug., 1968], No. 42989/69. Heading C1D. [Also in Division G2] Fulminating material for use as the priming charge in a percussively ignitable flashbulb has boron and zirconium as two of its constituents. A preferred material has the following composition by weight Powdered boron .. .. 21.23% Powdered zirconium .. .. 19À59% Red phosphorus .. .. 28À71% Potassium chlorate .. .. 28À71% Hydroxyethyl cellulose .. 1.74% Ortho phenyl phenol .. .. 0À01% sufficient water being added to give the required viscosity for application. These proportions represent a volume ratio of boron to zirconium of 3 : 1, but this ratio may be varied within the range 1 : 5 to 20 : 1. The weight ratio of red phosphorus to potassium chlorate may vary between 3 : 1 and 1 : 3 and the combined weight of these two constitutents may vary between 10 and 90%. The hydroxyethyl cellulose binder may constitute up to 5% by weight of the composition.
Patent GB-1023738-A (GB)
Title: Springboard
IPC: A63B5/10
Filed: 1964-10-22
Abstract: 1,023,738. Springboards. C. W. BUDDO Oct. 22, 1964 [Nov. 4, 1963], No. 43213/64. Heading A6M. A springboard 10 is pivotally mounted at 13 at one end and is supported at the other end by a U- shaped torsion bar 27 having splayed arms 38 which when weight is applied to the said other end of the board torsion is applied to the legs 31 of the torsion bar. The entire springboard may be supported on a tubular frame 14 or may be semipermanently secured to a foundation as shown in Fig. 11.
Patent GB-1476859-A (GB)
Title: Process and compositions for plant protection
IPC: A01N37/44
Filed: 1975-10-22
Abstract: 1476859 Fungicidal composition CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA RT 22 Oct 1975 [24 Oct 1974] 43439/75 Heading A5E Fungal infection in plants is controlled by applying thereto at least one compound of the formula I wherein R<SP>1</SP> is C 1-12  alkyl or chloroethyl; R<SP>2</SP> is hydrogen, halogen, C 1-4  alkyl, C 1-4  alkoxy or nitro; R<SP>3</SP> and R<SP>4</SP> are hydrogen, halogen, C 1-4  alkyl or nitro; or a salt thereof. Preferred compositions contain the compound wherein R<SP>1</SP> is C 1-4  alkyl, R<SP>2</SP> is hydrogen, and R<SP>3</SP> and R<SP>4</SP> are each selected from hydrogen, chlorine or nitro with a suitable carrier diluent and the usual additives.
Patent GB-1011180-A (GB)
Title: Improvements in blank feeders for folding box machines
IPC: B65H1/02
Filed: 1964-10-26
Abstract: 1,011,180. Feeding sheets. BRADFORD SPEED PACKAGING & DEVELOPMENT CORPORATION. Oct. 26, 1964 [Oct. 29, 1963], No. 43501/64. Heading B6B. In apparatus for feeding blanks to box-making machines, a pile of blanks is supported with the blanks on edge upon circular rods 15, 16 inclined to the horizontal at an angle of not less than 15 degrees and not more than 40 degrees, and oscillated about their axes to reduce friction fingers 21, 22 on a gate 12 engage the foremost blank to hold the pile in place, and oscillating suction devices 23 feed the blanks one by one to a conveyer 30. No follower or pusher is required at the rear of the pile because of the slope of the rods, which slope is not great enough, however, to interfere with the separation of the blanks by the suckers 23. Fixed rods 17, 18 above the level of the rods 15, 16 engage the sides of the pile to keep the blanks aligned. The rods 15, 16 are oscillated by links 31 . . . 33 from an oscillated bar 34 connected by levers to a main shaft 43 from which the suckers 23 are operated. To prevent blanks at the rear of the pile falling backwardly under the impact of the suckers when only a relatively small number of blanks remain in the pile, a strip 54 mounted on the gate 12 has attached at its rear end 53 a leaf spring 51 which snaps behind the reduced pile, but is lifted clear by the blanks when the pile is replenished.
Patent GB-917319-A (GB)
Title: Filters for air conditioning apparatus
Inventor: HALL SYDNEY
IPC: B01D46/12
Filed: 1960-12-17
Abstract: 917,319. Air filters. HALL & KAY Ltd. Oct. 16, 1961 [Dec. 17, 1960], No. 43519/60. Class 8(2). Each of a bank of air filter units 19, Fig. 1, suitable for use in air conditioning apparatus comprises a frame 20, 21, Fig 3, over which is stretched filter fabric 22 so as to cover all sides but one side 23 through which filtered air is drawn by a fan (not shown) and which side 23 is held in sealing engagement with the peripheral edges of a vertical slot 14 formed by T-sectioned uprights 15 connecting upper and lower horizontal rails 11, 10 of a filter supporting structure which also includes a front and rear panel 13 connected by crosspieces. Vertical filter frame members 21 are of L-shaped cross section and that portion 26, Fig. 2, of the filter fabric 22 passing over the cut out portion is flexed into said recess by the stem portion 16 of the T-shaped uprights 15 when a tie ban 28 connected to a rod 29 secured to frame members 21 is pulled against a thrust plate 30.
Patent GB-1124636-A (GB)
Title: Improvements in containers coated with heat sealable material
IPC: B65D85/80
Filed: 1965-10-14
Abstract: 1,124,636. Portable containers having heatsealed closures. FR. HESSER MASCHINENFABRIK A.G. 14 Oct., 1965 [14 Oct., 1964], No. 43561/65. Heading B8D. A container has body walls formed from a laminate of paper 7, and aluminium 8, with polypropylene 9, 10 on either side, and end closures 2 of aluminium foil 6 coated internally with polypropylene 5 and thereby heat-sealed to both the inner and outer surfaces of the upper end of the body walls. After applying the end closures to the body, the rims are compressed and sealed by heated clamps which may result in a bead being formed on the rim edge, Fig. 3 (not shown). The pressure may also cause the coatings 5 to be squeezed into a position providing a better seal of the cut end of the paper 7. An extra layer of heat-sealable material may be applied to the lid rim or on the cut end of the body walls. Opening and pouring devices may be provided in one of the end closures.
Patent GB-436379-A (GB)
Abstract: 436,379. Spray carburetters. GLEDHILL, F., 213, Bradford Road, Huddersfield, and BLOUNT, P. C., 4, Bedford Circus, Exeter. April 10, 1934, No. 10748. [Class 7 (iii)] An additional switch, disposed in series with the ordinary ignition switch of a magneto circuit or in parallel in the case of coil ignition, is connected by a Bowden wire &c. to a fuel valve to permit the fuel to be turned off without affecting the ignition and to make it essential to operate the additional switch to turn off the fuel before the engine can be switched off by the ordinary ignition switch. In the case of coil ignition, a metal rod b<1>, Fig. 2, slidable in a tubular member A under control of a handle e<1> provided on a sleeve E having a cam slot engaged by a pin on the rod b<1>, carries an insulating bush b which separates contacts F when the rod is in its innermost position and a Bowden wire G, mounted therein, is permitting a spring L, Fig. 6, to press a needle valve H in the fuel supply line, on to its seat. Displacement of the rod b<1> to the left brings a metal sleeve B into association with the contacts F, rendering the ordinary ignition switch inoperative, and withdraws the valve H from its seating. Specification 407,966 is referred to.
Patent GB-1318137-A (GB)
Title: Process for preparing polymer films
IPC: C08L23/10
Filed: 1971-09-20
Abstract: 1318137 Heat sealable films CHISSO CORP 20 Sept 1971 [19 Sept 1970 25 Dec 1970] 43800/71 Heading B5B Heat-sealable thermoplastic films are prepared by extruding a molten blend containing from 60 to 90% by weight of a crystalline propylene polymer and from 40 to 5% by weight of an alicyclic resin having a softening point of from 85‹ C. to 140‹ C. (preferably from 100‹ to 135‹C.) and a bromine value not above 14 (preferably not above 10), stretching the resultant film along at least one axis at a temperature of from 90‹ to 170‹ C., and subjecting at least one surface of the stretched film to an oxidation treatment. The crystalline propylene polymer is preferably polypropylene having an intrinsic viscosity of from 1À5 to 4À0 in tetralin at 135‹ C. The alicyclic resins are obtained by hydrogenation of aromatic hydrocarbon resins, preferably having a degree of polymerization of from 2 to 7, obtained by polymerizing reactive unsaturated hydrocarbons containing mainly aromatic hydrocarbons with reactive double bonds in their side chains, for example vinyltoluene, vinylxylene, propenylbenzene, styrene, α-methylstyrene and indenes. Conveniently the alicyclic resins are obtained by catalytic hydrogenation of resins prepared by polymerizing the vinyl aromatic hydrocarbon-rich distillate obtained during petroleum cracking processes. The molten blend of polypropylene and alicyclic resin preferably also contains 0À02-0À7% by weight of an anti-blocking agent, e.g. an inorganic filler or a bisamide. The stretching of the film may be uniaxial at a temperature of from 90 to 140‹ C. and a draw ratio of between 2 and 10 or biaxial at a temperature of from 130 to 165‹ C. and a draw ratio of from 2 to 8. Preferably the film is stretched to a ratio of at least 4 in both directions, the ratio of longitudinal to lateral stretching being from 0À5 : 1 to 1À5 : 1. The surface oxidation may be a corona discharge treatment or may be accomplished by the use of flame or chemicals. Examples relate to the melt extrusion of flat and tubular films containing crystalline polypropylene, up to 40% by weight alicyclic resins obtained by hydrogenation of petroleum resins and optionally silica, calcium carbonate, ethylene bisstearamide and or a phenolic stabilizer. After heat stretching the films were optionally heat set at a temperature in the range 120‹ to 170‹ C. and were then surface oxidized by corona discharge treatment. The biaxially oriented films of Example 4 were obtained by cutting tubular films according to the invention prepared by melt extrusion and inflation techniques. In Examples 5 and 7 comparative films were produced from blends of crystalline propylene and an α-methylstyrene-vinyltoluene copolymer, a polymer of dienic and olefinic hydrocarbons, a low molecular weight polystyrene and other petroleum resins.
Patent GB-1025052-A (GB)
Title: Esterification process
Inventor: JONES HARRY
Filed: 1961-12-12
Abstract: Esters are prepared by reacting with an olefine containing at least 5 carbon atoms, in presence of a Lewis acid catalyst, a carboxylic acid, e.g. acetic, propionic, butyric, coprylic, pelargonic, adipic, sebacic, isophthalic, terephthalic or chlorendic acids.
Patent GB-1027889-A (GB)
Title: Container comprising two, complementary, detachable parts
Inventor: HOPKINSON BRIAN EDWARD
IPC: B65D81/02
Filed: 1963-11-12
Abstract: 1,027,889. Containers for fragile articles. LITEWATE PACKING CO. Ltd. Sept. 4, 1964 [Nov. 12, 1963], No. 44551/63. Heading B8P. Buttresses 12 (Fig. 1) in boundary walls of one part of a container form interference fits with recesses in the walls of a second separate part to provide a frictional restraint against separation of the parts. Additional coacting buttresses and recesses may be included, preferably of less width than the walls so that the buttresses prevent relative sliding between the two parts of the container. Preferably the container is made of resilient material such as expanded polystyrene. For transportation the parts may be held together by a wrapper or elastic band. The container may be used for ampoules, fragile instruments or wrist watches.
Patent GB-1270940-A (GB)
Title: Improvements in or relating to switching circuit arrangements for switching video or radio frequency signals
Inventor: DAVIES ERIC
IPC: H03K17/74
Filed: 1968-09-19
Abstract: 1,270,940. Transistor and diode switching circuits. MARCONI CO. Ltd. 6 Aug., 1969 [19 Sept., 1968], No. 44563/68. Headings H3P and H3T. A changeover gate comprises a pair of diode bridge gates each having one diagonal point connected to a respective input terminal and its opposite point connected to a common output terminal, the other diagonal points being connected to a first transistor for switching the first diode gate on and the second off and a second transistor for switching the second diode gate on and the first off. In the circuit shown, a negative voltage at SW switches T1 on and also T2 (via T4). The diodes of bridge BR1 are thus forward biased and those of BR2 reversely biased. A positive voltage at SW switches off T1 and T2 and switches on T3 and T4 which likewise switch BR2 and BR1 off. This arrangement speeds switching and reduces interference. Diodes and capacitors are connected in the base circuits of the transistors to minimize hole storage delays. In addition the base circuit of T4 may include a D.C. restorer or clamp to enable the mark space ratio to be varied.
Patent GB-1512799-A (GB)
Title: Apparatus for non-contact measurement of distance between a metallic body and a detection coil
IPC: G01B7/02
Filed: 1975-10-29
Abstract: 1512799 Measuring distance electrically NIPPON KOKAN K K 29 Oct 1975 [6 Nov 1974 25 March 1975] 44765/75 Heading G1N In an apparatus for measuring the distance between a metallic body 1 and a detector head coil 4 the output of the detector is linearized. A fixed frequency and amplitude A.C. signal from oscillator 2 is amplified by amplifier 7 the gain of which is varied by the impedance of coil 4 which varies non- linearly in dependance on the distance between the coil 4 and the body 1. In order to obtain a linear output voltage - distance characteristic from the amplifier a feedback path 9 is provided between the output and non-inverting input of the amplifier 7 which feedback includes an impedance which is so adjusted that the gain of the amplifier varies non- linearly in a manner to complement the non-linear variation of the impedance of coil 4, whereby the output of the amplifier can be made to vary linearly with variation in distance. In its simplest form the impedance in the feedback path 9 comprises a variable inductor and resistor connected in series, Fig. 6 (not shown). To increase the facility for fine adjustment and give a wider variation in inductance the arrangement of Fig. 7 may be used in which a variable resistor R3 is connected in parallel with a series network 11 of potentiometer R 2 , fixed inductor L2 and an impedance converter 10. The observed inductance in the series circuit 11 and hence amplifier gain can be varied by altering the tapping point of potentiometer R 2  which has the effect of varying the voltage applied to L 2 . To obviate errors due to variations in temperature of coil 4 the inductances are wound on a common core Figs. 10 and 11 (not shown).
Patent GB-1027314-A (GB)
Title: Drawer locking mechanism
IPC: E05B65/462
Filed: 1962-11-28
Abstract: 1,027,314. Fastening drawers simultaneously. A. CAIRNS., J. NOBLE. Feb. 28, 1964 [Nov. 28, 1962], No. 44977/62. Heading E2A. A column of drawers with a top drawer 11 and at least one lower drawer 12 has a locking mechanism at the rear of the column for securing in a closed position all but one of the drawers, the mechanism comprising a vertically reciprocable member 17 biased upwards by a spring 19, an actuating member 20 extending . f from the reciprocable member for engagement by a drawer 11 so as to move the reciprocable member downwards, upon closure the drawer, and at least one catch 22 extending from the reciprocable member whereby the or each other drawer is engaged and secured in position by a catch upon downward movement of the reciprocable member. To lock the desk the lower drawers are closed to a position in which the catches 22, 23, 24 extend over the rear wall of the drawers 12, 13, 14 respectively and as the upper drawer is closed the lower rear edge of it engages the actuating member i.e. metal finger 20 forcing it and thus the reciprocating member 17 downwards causing the catches to engage the rear walls of their respective drawers. As the top drawer is opened the rod 17 moves upwards disengaging the watches from the lower drawers.
Patent GB-1013632-A (GB)
Title: Belt dryer
IPC: F26B17/04
Filed: 1963-11-18
Abstract: 1,013,632. Drying apparatus. MASCHINENFABRIK FRIEDRICH HAAS G.m.b.H. Nov. 18, 1963 [Aug. 9, 1963], No. 45370/63. Heading F4G. Apparatus for drying loose material, e.g. fibrous or granular comprises a conveyer belt 7, Fig. 2, on which the material is carried in a layer 15a above an axial fan 16 having a vertical axis of rotation so as to draw an air stream downwardly through the material at one portion of the belt into the fan inlet and then directed through a heater 19 by an air guide having side walls 20, 21 to direct the air upwardly through the belt and material layer over a greater area than the area of the portion through which the air is drawn downwards. A removable filter 18 is mounted between the conveyer and fan and a horizontal wall is mounted above the conveyer. One or more fans may be positioned beneath the belt. The air may be passed upwardly through the belt with a component of motion either contrary to or in the direction of motion of the belt by various forms of guides, e.g. a substantially triangular prismatic body may be mounted in a chamber beneath the belt and extend across the drier belt, Fig. 4 (not shown), or a series of slanting jets may be formed in a partition below the belt, Fig. 6 (not shown). Several conveyers may be arranged serially, the speeds of which are so related that at the start of the drying travel a small depth of layer of material is present which becomes increasingly greater as the drying process progresses.
Patent GB-1020288-A (GB)
Title: Automatic pilot mechanism for ships
Inventor: WORTHING NICOLAS
IPC: B63G8/18
Filed: 1962-11-30
Abstract: 1,020,288. Steering ships and submarines. HARLAND ENGINEERING CO. Ltd. Nov. 26, 1963 [Nov. 30, 1962], No. 45378/62. Heading B7V. [Also in Division G3] An automatic pilot mechanism for steering ships or submarines comprises a pilot valve 34<SP>1</SP>, Figs. 2a-2c (not shown) which is actuated by a gyro compass 190 in response to deviations from a set path to control the supply and exhaust of fluid to the opposite sides of a piston 58<SP>1</SP>. Movement of the piston 58<SP>1</SP> acts through a lever 36<SP>1</SP> to provide a feedback to the pilot valve and through a rod 68<SP>1</SP> to actuate a phase advancer 66<SP>1</SP>. The phase advancer comprises a piston 74<SP>1</SP> connected by a rod 64<SP>1</SP> to a lever 60<SP>1</SP> opposite sides of the piston being connected by a passage 92<SP>1</SP> containing a throttle 941. The output rod 82<SP>1</SP> of the phase advancer is connected to a bellows 76<SP>1</SP> loaded by a spring 86<SP>1</SP> and a spring 90<SP>1</SP> is located between the bellows and piston, the combined rate of the bellows and spring 86<SP>1</SP> being several times stiffer than the spring 90<SP>1</SP>. The output of the phase advancer thus anticipates the correction and operates a valve 114 to control the supply and exhaust of fluid to a ram 136<SP>1</SP> which actuates the rudder. Movement of the ram provides a feedback through a lever system to the valve 114<SP>1</SP>. In a submarine, a second system, similar to the above is provided to actuate the hydroplanes, the system being responsive to the depth as measured by the hydrostatic pressure.