baber/WOPTO huggingface dataset:
Patent GB-1200899-A (GB)
Title: Improvements in or relating to photocathodes
Inventor: TURNBULL ANDREW ALFRED
IPC: H01J9/12
Filed: 1967-04-21
Abstract: 1,200,899. Cathode materials and processing. MULLARD Ltd. 30 Aug., 1967 [21 April, 1967], No. 18486/67. Heading H1D. In a method of manufacturing a photocathode, a surface of a body of P-type semiconductive material, comprising an equiatomic compound of an element of the third column with an element of the fifth column of the periodic table or a mixed crystal thereof, is heated and afterwards exposed to caesium vapour and oxygen at room temperature to form a layer of a caesium-oxygen system a number of molecules thick, wherein the workfunction of this layer is equal to or less than the band gap energy, measured as the energy separation between the bottom of the conduction band and the Fermi level where the bands are straight, in the bulk semi-conductive material. Gallium arsenide doped with zinc at 4 Î 10<SP>-19</SP> atoms per c.c. may be baked at 300‹ C. in caesium vapour for a few minutes and after cooling to room temperature is exposed alternately to caesium and oxygen until the layer, e.g. 50 Š thick, has been built up. The exposure to caesium each time is carried out until photoemission from the surface rises to a maximum and then drops to 10 to 50% of this value, the succeeding oxygen exposure, preferably using spectroscopically pure oxygen at 5 Î 10<SP>-6</SP> Torr, is continued until photoemission is maximized again. The semiconductor materials used and surface preparation may be as described in Specification 1,086,228. The photo-cathode may be employed in a photo-cell, a photo-multiplier or an Iconoscope, Figs. 2-4 (not shown).
Patent GB-683274-A (GB)
Title: Feeding mechanism for sewing machines
IPC: D05B27/02
Filed: 1951-08-04
Abstract: 683,274. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Aug. 4, 1951, No. 18521/51. Class 112. In a feed-dog throw-out mechanism comprising an apertured arm moving with the feed-lift rock-shaft, a lever pivoted on the rock-shaft and also having an aperture, and a stem having a threaded portion and a frustro-conical portion, one of the apertures is threaded to receive the threaded portion of the stem and the other aperture has a cylindrical part and a frustro-conical part which receives the frustro-conical portion of the stem. The arm 68 is integral with the feedlift rock-shaft 44 and has a threaded aperture 69 into which the stem 72 screws. The pivoted lever 53 is biassed by a spring 57 in the anticlockwise direction (Fig. 4) and its aperture 64 has a frustro-conical part 66 which is engaged by the frustro-conical portion 75 of the stem. When the stem is unscrewed to the position shown by dotted lines in Fig. 6, the lever turns in the anti-clockwise direction to lower a link 49, the feed-bar 36 and the feed-dog 34. An adjustable stop 86 is mounted on a bearing for the loop-taker shaft 27. Advance movement is given to the feed-dog by an arm 39 on a rock shaft 41.
Patent GB-879188-A (GB)
Title: Improvements in or relating to manufacturing of paper bags
Inventor: NIELD LESLIE CAMDEN
IPC: A47L9/14
Filed: 1959-06-01
Abstract: 879,188. Paper bags. CHADWICK & SONS Ltd., JOSEPH, SIMMONS & SON Ltd., and REMOCO Ltd. June 21, 1960 [June 1, 1959], No. 18530/59. Class 94(2). [Also in Group XXVIII] A bag for a vacuum cleaner comprises a porous bag having two opposite flat sides and two opposite pleated sides, the two flat sides being closable towards one another to close the pleats between them, one end of the bag having sealed and the other end presenting a mouth, bound with tape, for connection to a vacuum cleaner, the centre pleat of each pleated side projecting beyond the pleats on either side of it. A tube is first formed by folding a rectangular sheet of porous dust filtering paper and sealing the edge at 12, then one side is pleated at 15, 16, 17 and the other at 18, 19, 20, the pleats 16, 19 projecting ; the pleated tube is collapsed and one end is closed by stitching 26 and turned over and bound by tape 27. To form the mouth of a bag a flat bar 30 is fitted into the wider middle pleats and the sides are pressed together and bound with tape 31. This tape overlaps the mouth of the bag and is turned inwards, irregularities being avoided by the wider pleats, and another tape may be added to strengthen the edge.
Patent GB-966320-A (GB)
Title: Improvements in or relating to methods of manufacturing semi-conductor devices
IPC: H01L29/167
Filed: 1961-05-23
Abstract: 966,320. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 23, 1961 [May 25, 1960], No. 18564/61. Heading H1K. In a method of attaching an alloying pellet 80 to a semi-conductor wafer by heating the graphite or chrome-iron jig until the pellet melts, and then tilting it until the pellet runs down on to the wafer, the pellet contains gallium and/or aluminium and one or both of germanium and silicon. Germanium and silicon both increase the surface tension of the pellet and reduce its tendency to adhere to the jig. The amount of zirconium and/or silicon must be at least half the gallium and/or indium content by weight and may be more than double. The gallium or aluminium content may be between 0.1 and 5% by weight of the whole. The balance of the electrode material may be lead, tin, indium or bismuth.
Patent GB-586334-A (GB)
Title: Improvements relating to carding engines
IPC: D01G15/28
Filed: 1944-09-29
Abstract: 586,334. Carding-engines. TWEEDALES & SMALLEY (1920), Ltd., and BOLTON, H. Sept. 29, 1944, No. 18665. [Class 120 (i)] The back-plate B of a carding-engine is secured to the licker-in wings C through concentric angle brackets A which are adjustable both radially and angularly with respect to the teeth on the card cylinder through eccentrics D, formed for manipulation with square heads D', which are positioned within slots E in the brackets. The brackets are locked in the adjusted position by bolts &c. F.
Patent GB-347055-A (GB)
Title: Improvements in safety razors
IPC: B26B21/16
Filed: 1930-06-19
Abstract: 347,055. Safety razors. HENTON, L., Yorke House, Creswell, Derby. June 19, 1930, No. 18683. [Class 30.] A safety-razor has a triangular or square blade A clamped between plates B, C, of corresponding shape, the plate C having a guard C<1> on one side and the adjacent faces of the plates B, C, being flat except near the ground where they are curved to bend the blade. The plane sides of the plates extend beyond the edges of the blade to protect the edges and the user from injury. The upper plate B may have a peg G engageable with one of a number of holes F in the blade to position the latter relatively to the guard-plate C. Alternatively the upper portion of the screwed stem B<2> may be triangular or square and engage a similarly shaped hole, J on the blade and guard-plate C.
Patent GB-323242-A (GB)
Title: Improvements relating to apparatus for aerating and blending liquids
IPC: B67D1/00
Filed: 1928-06-28
Abstract: 323,242. Battersby, J. W. June 28, 1928. Dispensing liquids. - Apparatus for aerating and blending liquids, particularly for dispensing freshly aerated water flavoured with measured or regulated quantities of fruit juices, spirits &c., comprises a conduit h into which the liquid, such as water, is injected through a jet orifice m, drawing in air through apertures and impinging upon the inflowing flavouring agent supplied from a graduated receptacle p through a pipe o provided with a regulating valve s. The conduit h is screwed into a flanged tap union g, the conical jet nozzle l being gripped therebetween. The device may be attached to an ordinary domestic tap but is shown as a counter-fitting, the main water supply pipe c passing up an ornamental pillar a at the top of which it is bent horizontally and fitted with a cock e. The delivery outlet is throttled by a screw stud u or other adjustable means and is fitted with an antisplash device t.
Patent GB-863856-A (GB)
Title: Improvements in water heating and hot water supplying apparatus
IPC: F24H1/20
Filed: 1957-06-14
Abstract: 863,856. Electric water heaters. KENDON DEVELOPMENTS Ltd. June 14, 1957 [June 19, 1956], No. 18888/57. Class 39(3). [Also in Group XIII] Water heating apparatus comprises a container with heating means, an inlet pipe associated with excess pressure relieving means, an air vent opening in the inlet pipe, and thermostatic control means at least part of which is connected to the heating means by thermally conducting material. As shown, a cylindrical container 1 mounted in a box 2 and surrounded by lagging 3 has an electric immersion element 4 in contact with and brazed to a thermostat pocket 5. An outlet pipe 7 and an inlet pipe 8 joined to a vent pipe 9 by a 'T' connection 10 are also provided, cold water being led to a point just above the element 4 by a continuation pipe 12 having a larger diameter than the pipe 9 to which it is connected, e.g. by welding, so that an aperture, constituting excess pressure relieving means, is formed between the two pipes near the top of the container. The pipe 9 has air bleeding means in the form of a hole 11 which may have an area of between 0.0002 and 0.003 sq. inches. The vent pipe 9 is of sufficient height, e.g. sixteen feet, to act as a pressure retaining means, and may be replaced by a pressure relief valve 13 (Figs. 2 and 3 not shown). If the pressure in the container should rise excessively and be greater than the supply pressure water is ejected from the vent pipe 9 and the water level in the container falls, allowing steam to escape through the aperture between pipes 9 and 12; the subsequent fall in pressure allows cold water to enter and cool the contents. Specification 779.749 is referred to.
Patent GB-1197821-A (GB)
Title: A Loader Bucket having an Ejector Mechanism.
Inventor: CAMPBELL TREVOR GEORGE
IPC: E02F3/407
Filed: 1968-04-22
Abstract: 1,197,821. Shovelling machines. CATERPILLAR TRACTOR CO. 22 April, 1968, No. 18891/68. Heading E1F. An ejector plate 34 for a digger bucket 12' is so pivotally supported in a 'bucket (by swing links 50, 51 that the lower edge of the plate will have a linear movement when the plate is moved through the bucket by suitable means. As shown the plate movement is caused by a link 57 and the linkage for tilting the bucket relative to the arms 13 supporting it. The movement may be caused as the bucket is pivoted relative to the arms by a link between the plate and the arms or by actuation of a ram positioned between the plate and the bucket.
Patent GB-1469499-A (GB)
Title: Circuit arrangement for generating radiofrequency double- sideband suppressed-carrier signals
IPC: H03C1/58
Filed: 1975-05-06
Abstract: 1469499 Amplitude modulators INTERNATIONAL STANDARD ELECTRIC CORP 6 May 1975 [7 May 1974] 18925/75 Heading H3R An R.F. double side band suppressed carrier signal generator comprises an amplitude modulator 2, a switchable 0/180 degree phase shifter (1) for phase shifting the carrier before or after modulation and an arrangement 5 for applying to the phase shifter 1 a periodic switching signal in phase with the modulating signal. The phase shifter 1 with PIN diodes 9 alternately switched on and off correspond to a line alternately short circuited or open circuited. The modulator 2 may be an absorption modulator including hybrid couplers 6,7 and PIN diodes 8 causing attenuation of the carrier by damping and by reflection in response to the applied modulating signal. Carrier suppression is obtained by phase reversal of the modulated carrier at zero crossings of the modulation envelope. In the arrangement of Fig. 2 (not shown), the modulation characteristic is linearized by feed-back of the modulated carrier.
Patent GB-764721-A (GB)
Title: Improvements in or relating to cured polyesterurethane castings
IPC: C08G18/10
Filed: 1953-07-08
Abstract: A di-isocyanate modified polyester casting fluid is made by reacting together 1 mol. of a hydroxyl terminated polyester of molecular weight 600-2500 and 1.3-1.6 mols. of an aromatic di-isocyanate in presence of 10-50 parts per 100 parts of polyester of an organic plasticizer, adding 0.1-0.4 mols. of an aliphatic polyhydroxyl curing agent and while still liquid pouring the mass into a mould and curing it to a solid state.  The molar quantity of di-isocyanate used must be at least 0.2 mols. excess over the total molar quantity of polyester and polyhydroxyl curing agent.  Specified are: polyester forming reactants-malonic, succinic, glutaric, adipic, pimelic, sebacic, suberic, azelaic and maleic acids and ethylene, 1,2- or 1,3-propylene, 1,2- or 1,4-butylene, pentamethylene, hexamethylene, diethylene and triethylene glycols; di-isocyanates-m- or p-phenylene, naphthylene-1,5-, diphenylmethane-p.p1 -, triphenylmethane - p,p1 - and metatolylene di-isocyanates; polyhydroxyl curing agents-those glycols mentioned above, glycerol, 1,1,1 - trimethylolpropane, trimethylolhexane, monoesters of pentaerythritol, mixtures of diols and triols, linear polyesters and branched polyesters from a dibasic acid, ethylene glycol and a triol: plasticizers-diphenyl octyl phosphate, tricresyl phosphate, polyester plasticizers, methyl phthalate, benzyl phthalate, benzyl sebacate, N.N-dibutyl benzene sulphonamide, phenyl naphthyl ketone, dimethyl naphthalene, o-nitro biphenyl, butyl diglycol carbonate and tetrahydrofurfuryl adipate. When using glycerol or ethylene glycol as curing agent some amino-alcohol may also be used.  In examples casting fluids are prepared from polyethylene adipate, p-phenylene di-isocyanate, ethylene glycol or glycerol and tricresyl phosphate.
Patent GB-142716-A (GB)
Title: An improved sparking plug
IPC: H01T13/46
Filed: 1919-07-30
Abstract: 142,716. Fellows, D. V. L. July 30, 1919. Sparking-plugs. - A pointed terminal 6, 8 on one electrode is associated with a convex surface 7, 9 on the other electrode.
Patent GB-389343-A (GB)
Title: Improved process of and device for distilling solid fuels by means of superheated steam
IPC: C10B49/02
Filed: 1932-07-05
Abstract: 389,343. Coking processes ; gaspurifying materials. ZOTOS, G., 30, Dernburgstrasse, Charlottenburg, Berlin. July 5, 1932, No. 19002. Convention date, July 28, 1931. [Classes 55 (i) and 55 (ii).] In the distillation of solid fuel by superheated steam in a retort 1, the hot distillates, before entering a condenser 2, are cooled in a washer 3 by contact with a large quantity of a pre-heated emulsion of water and phenol, which passes into a vacuum chamber 5 in which steam is generated, this steam being returned through a superheater 7 to the retort 1. Additional heat may be supplied in a heater 10 to the emulsion before it enters the vacuum chamber 5. The emulsion from the chamber 5 is fed by a pump 8 to a receptacle 9 from which it is again fed into the washer 3. Oils may be withdrawn from the emulsion in known manner.
Patent GB-259542-A (GB)
Title: Reinforced membranes, diaphragms or other bodies of rubber having innumerable minute pores
IPC: H01M50/414
Filed: 1926-07-30
Abstract: 259,542. Beckmann, H. Oct. 9, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Addition to 238,870. Separators; diaphragms. -The membranes and diaphragms forming the invention of the, parent Specification are modified by the provision of reinforcing means such as ribs, beads, frames, grids, &c. which are attached to or embedded in the membranes &c. The reinforcements are made of compact hard or soft rubber. Fig. 2 shows an edge view of a diaphragm a of porous rubber having an embedded frame b of compact hard rubber.
Patent GB-441324-A (GB)
Title: Improvements in the construction of cathodes for cathode-ray tubes
IPC: H01J29/48
Filed: 1935-07-03
Abstract: 441,324. Cathode-ray tubes. FERNSEH AKT.-GES., Goerzallee, Zehlendorf, Berlin. July 3, 1935, No. 19070. Convention date, July 3, 1934. [Class 39 (i)] A cathode for a cathode-ray tube has its emissive surface formed on a solid sphere or segment of a sphere, which is mounted on or in direct contact with a heating element. The spherical body may be formed by the fusion of the heating or supporting wires and it may be made of platinum or platino-nickel.
Patent GB-638844-A (GB)
Title: Improvements in steel trestles
IPC: E04G1/32
Filed: 1948-07-16
Abstract: 638,844. Trestles. SPEIGHT, W. H. July 16, 1948, No. 19163. [Class 52 (iii)] In a trestle of the kind comprising a pair of spaced uprights A joined by transverse bars and each provided with shoes, the tubular spaced uprights receiving the usual depending rods D of the plank-supporting bar E the shoes C of usual triangular type are mounted on tubular sleeves H adapted to be clamped to the uprights A so that when in their inoperative position the shoes C may be placed parallel with the transverse bars B to facilitate transport.
Patent GB-141261-A (GB)
Title: Improvements in shuttering for use in building concrete work
IPC: E04G11/30
Filed: 1919-08-05
Abstract: 141,261. Hodkin, H. H. Aug. 5, 1919. Addition to 121,717. Casting and moulding in situ. - The shuttering for concrete walls &c., described in the parent Specification, i s adapted for hollow work by means of rigid ties f to which the looped wires d are connected and which by means of their divided and splayed ends serve to unite the two parallel walls &c., and also the successive layers of concrete. The ties being thin readily lie in the spaces between the ends of adjacent cores.
Patent GB-867793-A (GB)
Title: Air-break electric circuit breaker
IPC: H01H9/34
Filed: 1958-06-16
Abstract: 867,793. Air-break switches; actuation of switches; switch contacts; arc-rupturing in switches. ELEKTROSKANDIA A.B. June 16, 1958 [June 20, 1957], No. 19225/58. Class 38 (5). In an air - break switch a substantial portion of a knife contact 7 moves during a substantial portion of its opening movement in an arcing chamber formed as a narrow slot between two insulating walls 12, the chamber being open at its sides only to the extent necessary to permit movement of the knife contact, so that when the switch is opened, the flow of arc gases beneath the knife contact is limited due to the small opening at 19 and the arc is forced to burn between the outer end of the knife contact and an arcing contact 15 until extinguished. The arcing contact 15 is formed by a bolt securing the chamber to a sheet-iron housing 23, Fig. 4, which encloses the main fixed contact formed by a number of contact fingers 20 on each side of the knife contact 7. A spring 25 biases each finger 20 into engagement with the knife contact 7 and a fixed terminal 4. The contact 7 is secured to a shaft which includes an insulating portion 30, Fig. 5, enclosing a metal sleeve 38 and a rod 41. A spring 42 is fixed to the sleeve and to an actuating member 37 rotatable on the rod 41. Arms 49, pivoted at 48 on a fixed frame member 47, have projections 50 co-operating with indentations in a ring 45 secured to the sleeve 38. When the actuating member 37 is turned it stresses the spring 42 until a screw 52 screwed into the member 37 reaches the end of a slot in the sleeve 38. The sleeve is then turned positively to release the ring 45 from the arms 49 and to impart an initial movement to the contact 7. Thereafter a quick-break action occurs under the influence of the spring 42. The screw 52 may be omitted, the quick-break action occurring when the spring 42 has been sufficiently tensioned to overcome the retaining force exerted on the arms 49 by a spring 51. In a triple pole arrangement, Fig. 2 (not shown), the knife contacts are operated by a common shaft having insulating portions, the operating mechanism being at one end of the shaft and indicating mechanism being provided at the other end of the shaft. A change-over switch arrangement is referred to.
Patent GB-1079625-A (GB)
Title: Synthetic protein foodstuffs
IPC: A23L27/27
Filed: 1966-05-02
Abstract: A smoke flavoured, impregnated and at least partly agglutinated spun protein fibrous material is dried to a moisture content of 5-25 wt. per cent., toasted, and coated with a fat to yield a product having a total fat content of 10-45 wt. per cent.  In the examples, products resembling fried bacon were obtained.  The toasting may be effected at 200-600 DEG F. to reduce the moisture content to below 5 wt. per cent.  The protein may be soy protein and the fat may be a vegetable fat such as coconut oil.
Patent GB-236751-A (GB)
Title: Improvements on propelling devices for water-craft
IPC: B63H1/12
Filed: 1924-08-14
Abstract: 236,751. Schul, M. Aug. 14, 1924. Screw propellers.-The propeller is formed with a ring boss which encircles the hull and which has an internal driving pinion, whilst the hull has a shallow supporting groove. The ring boss 2 has blades 3 and an internal pinion 6, and is formed by a number of segments. The power shaft 4 is fitted with a pinion 5 adapted to pass through an opening in the hull 1 to mesh with the internal pinion. The axis of the ring is approximately at the water level so that the propeller is semi-submerged. Two or more propellers may be fitted.
Patent GB-1436105-A (GB)
Title: Electric impulse transmitters
IPC: H04M1/272
Filed: 1972-04-26
Abstract: 1436105 Impulse transmitters GENERAL ELECTRIC CO Ltd 26 July 1973 [26 April 1972] 19365/72 Heading H4K In an impulse transmitter of the type including a store for digits selected and a pulse generator for providing trains of impulses representative of the digit values stored, a clockpulse generator providing a train of clockpulses for timing operations in said store and said pulse generator is arranged to be energized from a rechargeable electric supply only when one or more digit values have been selected and the corresponding trains of impulses have not yet been generated. Such an arrangement is applied to the push-button dialling apparatus of Specification 1,236,961 and is intended to help conserve power. In the Figure only the clockpulse generator 4 for providing four-phase clockpulses in the form of two interlaced pulse trains is shown in detail together with associated transistor circuitry for ensuring that a blocking oscillator 7, 8 forming part of the clockpulse generator is only activated during the period when a digit has been selected by the depression of a push button 2 and the corresponding pulse train has not been produced by unit 3 which may be as disclosed in the above mentioned Specification, when the subscriber goes off-hook, a rechargeable supply, e.g. a battery charged when the subscriber is either on-hook or offhook, or a large value capacitor, e.g. of value 2000 ÁF, which is arranged to be charged from the exchange while the subscriber is off-hook, is connected to terminals 37, 38. The blocking oscillator 7, 8, 9, however remains inactive until a push button 2 is depressed which causes a changeover switch 18 to operate and energize the oscillator via transistors 19 and 20. By means of diode 14 and capacitor 15, the activated oscillator covers a potential difference to be set up across wires 16, 17 which causes transistor 22 to briefly turn on to reset the store of unit 3. The voltage developed across wires 16, 17 may also be used to power the unit 3. The selected number is then written into store and the presence of a number therein causes a mark to be extended via wire 27 to transistor 20 to maintain the oscillator activated over the pushbutton is released and a digit is still stored. Application No. 17183/73 is referred to in relation to the use of a capacitor as a rechargeable power supply.