baber/WOPTO huggingface dataset:
Patent GB-273236-A (GB)
Title: Improvements in or relating to dental flasks
IPC: A61C13/00
Filed: 1926-11-12
Abstract: 273,236. Ohio Chemical & Manufacturing Co., (Assignees of Axelrod, M. L.). June 28, 1926, [Convention date]. Dental flasks.-Dental flasks for curing rubber, bakelite &c. dentures are rendered self-heating by embodying with them resistances capable of being connected with a source of current. The flask comprises body portions 10, 11, with removable top and bottom covers, the parts being provided with lugs 14, 16, 17, 19 to enable them to be assembled by means of screws 15, 21. The heating elements 24, 25 are housed in the covers 12, 18, and are connected to pairs of contacts 33, 29 respectively. Preferably the two heating units are placed in the same circuit which may include a thermostat 32 which opens the circuit on the temperature exceeding a predetermined limit. Specification 262,410 is referred to.
Patent GB-1152671-A (GB)
Title: Toner Dispenser
IPC: G03G15/08
Filed: 1966-06-27
Abstract: 1,152,671. Developing electrostatic images. RANK XEROX Ltd. June 27, 1966 [July 1, 1965], No.28668/66. Heading G2H. Toner is dispensed from a housing 101 through a shoot 103 by a wire 112 moved upwardly and downwardly in slots 109 by arms such as 114 connected to a shaft 120 actuated by a crank 124. The wire 112 thus agitates the toner in the housing. Excess toner is removed by a scraper 132 adjustable to regulate the amount of toner removed. A dispensing scraper 140 is adjustable in position by a nut 144 to ensure that all or a given amount on the wire is scraped off. The toner dispenser is embodied in a servo-graphic machine in which has known charging, exposure, developing transfer and cleaning stations.
Patent GB-261426-A (GB)
Title: Cone type loud speaker
IPC: H04R7/12
Filed: 1926-04-13
Abstract: 261,426. Hopkins Corporation, (Assignees of Hopkins, M. C.). June 1, 1925, [Convention date]. Loud-speakers ; diaphragms. -A large conical diaphragm, of light and stiff fibrous material, is mounted on a sheet metal support. As shown, the support is a frusto-conical frame 3 having a. central opening into which the electro-magnetic movement is inserted. Additional openings 10, 11, 12, which may be ornamental, are formed in the support for the passage of air. The frame is carried by a post 6 secured to a base piece 7. The conical diaphragm 1 has a flexible rim, formed by one or more reverse bends, which is attached to a flared rim on the frame, the edge 4 of which is turned over to protect the edge of the diaphragm. The electro-magnetic movement, comprising a polarized reed 23 projecting from one limb of a permanent magnet 13 into the gap in a bifurcated pole piece on the other limb, forms the subject-matter of Specification 253,080. The movement is carried by a plate 28 screwed to the supporting frame 3.
Patent GB-773311-A (GB)
Title: Improvements in and relating to electro-luminescent structures
IPC: H05B33/14
Filed: 1952-11-14
Abstract: 773,311. Electroluminescence. GENERAL ELECTRIC CO. Nov. 14, 1952 [Nov. 23, 1951], No. 28803/52. Class 39(1). An electro-luminescent cell comprises a thin homogeneous conducting layer of zinc sulphide 7 overlying a transparent conducting layer of titanium dioxide 2 and with superimposed layers of transparent non-conducting lacquer or silicon dioxide 13 and conducting metal 14 respectively. The titanium dioxide is deposited to a thickness of <1>/10 of a micron or more on the glass support 1 by heating the latter in an atmosphere of titanium chloride and water vapour. The layer 7 of zinc sulphide is formed by placing the titanium layer and its support in an envelope containing a heated mixture of zinc vapour or zinc chloride and a gaseous sulphur compound e.g. hydrogen sulphide. An activator of manganese copper or silver is included. Silicon monoxide is deposited by volatilization and oxidized by heating in air or oxygen to form transparent silicon dioxide. Lacquers, resins and other non-conducting heat resistant plastics may replace the silica layer. A one-tenth micron layer of aluminium, silver, gold or copper is applied by volatilization or as a paste to form the outside conducting layer. Energy from an A.C. source 15 activates the cell to give light emission the brightness of which is said to increase exponentially with the applied voltage. Specification 738,285 is referred to.
Patent GB-1253463-A (GB)
Title: Amorphous vulcanizable terpolymers and processes for preparing the same
IPC: C08F2/00
Filed: 1969-06-06
Abstract: 1,253,463. Exo dicyclopentadiene. SNAM PROGETTI S.p.A. 6 June, 1969 [8 June, 1968], No. 28891/69, Heading C5E. [Also in Division C3] Exo dicyclopentadiene is obtained from endodicyclopentadiene according to the scheme by hydrating the endo form, brominating or iodinating the hydrated product and saponifying the brominated or iodinated product.
Patent GB-262751-A (GB)
Title: Improvements in ball or roller bearings for crankshafts
IPC: F16C9/02
Filed: 1926-11-17
Abstract: 262,751. Barbarou. M. J. B. Dec. 14, 1925, [Convention date]. Securing bearings on shafts. - Ball and roller bearings for crank shafts have the bore of the inner race ring 5<a> smaller on the side at which it is threaded in position than on its opposite side, the crank shaft on, which the ring the being correspondingly shaped. The bore may be tapered as in Fig. 3, or may be of varying diameters as at 7a, 8<a>, Fig. 4. To dismount the inner race ring it is first slid axially, as shown in Fig. 4. The bearing is held in position by a screwed ring 11 locked by a set screw 12. The shoulder 3b on the crank shaft may be omitted.
Patent GB-429812-A (GB)
Title: Improvements in or relating to lubricators
IPC: F16N11/02
Filed: 1934-10-12
Abstract: 429,812. Lubricators. TRIER BROS., Ltd., and TRIER, F. N., 36, Victoria Street, London. Oct. 12, 1934, No. 29231. [Class 12 (iii)] A lubricator comprises a cup A screw-threaded internally and having an outlet B<1> at one end and being closed by a cap D at the other end. The cup has a screw - threaded plunger C which can be rotated by a handle C<2> connected to the plunger C by a rod C<1>. A compression spring E is interposed between the cap D and an abutment on the rod C<1>. The spring E is preferably shaped as shown, so that, when fully compressed, it forms a flat spiral. The cap D is free on the rod C<1> and has a flange D<1> dimensioned so that it wholly encloses the plunger C when the latter is detached. In a modification the rod C<1> has an axial bore and the lubricator can be recharged with lubricant by applying a lubricant gun to the outer end of the bore.
Patent GB-647623-A (GB)
Title: Improvements in or relating to hasp locks for attache, suit and like cases
IPC: E05B65/50
Filed: 1948-11-10
Abstract: 647,623. Hasp locks. LILLIE, A. E.,.and HIRD, H. Nov. 10, 1948, No. 29232. [Class 44] In a hasp lock of the kind having a manually operated, spring controlled bolt adapted to engage a shackle passed through an opening in the front plate, the lock casing is furnished with bifurcated rivets whereby it is adapted for attachment to the side of an attache, suit or like case. The shanks 8, Figs..5, 6 of the rivets extend through holes 5 in a flanged back plate 2 secured to the front plate by lugs 1b, 1c, Fig. 7, pressed out of the front plate to form slots 9, 10. End portions 6 of the back plate are pressed in over the rivet holes so that the heads 8a are gripped between the front and back plates when assembled. In assembly the rivets are placed on the front plate and the back plate fitted over them and secured by bending over the lugs 1b, 1c. Between the pressed-in portions the back plate provides a space 3, Fig. 6, to accommodate the sliding bolt 4, Fig. 7. The bolt comprises a flanged pressing, the operative portion being a projecting lug 4a extending across the slot 9 for engagement with the hasp shackle. A portion at the rear of the bolt passes through the other slot 10 and is connected on the outside with a button for withdrawing the bolt. A spring 15 engages a fixed lug 2a on the back plate to maintain the bolt in the shot position. A keyoperated locking tumbler 16 is slidably mounted between the rear flange 4c of the bolt and a retaining member 22 urged against the tumbler by another arm of the spring 15. The blade of a key inserted in the hole 20 engages between the arms 18, 19 on the tumbler and is adapted to displace it into the locking or unlocking positions where it is retained by projections 24 engaging in either of a pair of V-shaped notches 23 in the member 22. In the locking position (shown in Fig. 7) the tumbler abuts, on one side, the lugs 1c on the front plate and on the other side a projection 25 on the bolt which is thereby secured against withdrawal. In the unlocking position the tumbler is disposed clear of the lugs 1c 'and they are received in slots 26 in the bolt as it is withdrawn.
Patent GB-1146647-A (GB)
Title: Packaging film and method for its production
Inventor: PETERSON NORMAN RICHARD
IPC: B29C48/08
Filed: 1966-06-29
Abstract: 1,146,647. Plastics laminates; coextruding flat films. DOW CHEMICAL CO. 29 June, 1966 [1 July, 1965], No. 29259/66. Headings B5B and B5N. A multilayer packaging film comprises layers 21, 22 of polyethylene, polypropylene, resinous copolymers of ethylene and propylene, or copolymers of ethylene and/or propylene with other olefinically unsaturated monomers, disposed as outer layers on each side of a barrier layer 23 which is p.v.c., polyvinylidene fluoride, a copolymer of vinylidene chloride, vinyl chloride, or vinylidene fluoride with one or more olefinically unsaturated monomers copolymerizable therewith, or a mixture thereof, and a transparent adhesive layer 24, or 25 of chlorinated polyethylene, p.v.c., or a copolymer of ethylene with vinyl acetate, isobutyl acrylate or ethylacrylate disposed between the barrier layer and each of the polyolefin outer layers. The adhesive layer may include an ultra-violet light absorbing stabilizer. The packaging film is flexible and transparent and as described is produced by simultaneous extrusion through a single die of all five layers. The film formed is cooled without orientation e.g. by a chill roll and may be subsequently heat treated to improve its barrier properties.
Patent GB-622942-A (GB)
Title: Improvements in or relating to apparatus for the washproof fixing of preparations applied to webs of fibrous material and containing synthetic substances which are hardened by heating
IPC: D06M15/71
Filed: 1946-10-01
Abstract: Preparations containing synthetic substances are fixed to webs of fibrous material, e.g. in printing, impregnating and dressing fabrics, by conducting the web at least along its one longitudinal edge in a positive continuous fashion and at a regulable speed through a heat-insulated chamber which is heated by electrical elements whilst the air in the chamber is circulated therethrough, e.g. by a turbine.  Where an acid is necessary to harden the synthetic substances in the web, a volatile acid such as acetic acid may be injected into the chamber.ALSO:<PICT:0622942/IV (c)/1> Preparations containing synthetic substances are fixed to webs of fibrous material, e.g. in printing, impregnating and dressing fabrics, by conducting the web at least along its one longitudinal edge in a positive continuous fashion and at a regulable speed through a heat-insulated chamber which is heated by electrical elements whilst the air situated in the chamber and heated by the elements is circulated through the chamber. Apparatus consists of a heat-insulated chamber 1 having a top 2 furnished with a double wall and provided with an electrically-operated turbine 28.  The chamber contains a series of rollers 20 and 25 driven by a chain 18 and over which passes an endless belt 17 supporting the web of material by one or both of its longitudinal edges.  The web is supplied from a roller 8 and after passing through the chamber is wound up at 9.  Air withdrawn from one side of the apparatus is forced by the pump 28 over an electrical heating element and back to the other side of the apparatus.  A thermostat 34 is provided to regulate the temperature in the chamber.  Where an acid is necessary to harden the synthetic substance in the web, a volatile acid such as acetic acid may be injected into the chamber.
Patent GB-1319828-A (GB)
Title: Rotary actuator and indicator
IPC: G09F11/23
Filed: 1970-06-17
Abstract: 1319828 Visible signalling apparatus NORTH AMERICAN PHILIPS CORP 17 June 1970 [25 Aug 1969] 29420/70 Heading G4F An actuator for a two-position indicator comprises a coil 21, an armature 26 rotatable between two end positions about a shaft 19a, pole members 22, 24 oppositely magnetized by the coil and leading to poles 23a, 24a arranged alternately around the armature 26. A ring 29 surrounding the armature is permanently magnetized with pole areas alternating round the ring. The armature is held in its end positions by means of a pin mounted on the pole member 24 and engaging with notches in rim 28 attached to the armature 26. On energizing the coil 21, the armature is moved axially to the position 17a, releasing the retaining pin from its notches, and rotates to its other end position under the influence of the poles 23a, 24a. An indicator disc 17 is mounted on the armature and carries marks which are visible through windows in the face 13. In a modification, Fig. 7 (not shown), the armature is attached to a rotatable shaft passing through the coil 21. In a further modification, Figs. 8-9 (not shown), the armature is mounted at the opposite end of the coil to the indicator disc and the stop pin is mounted on the armature and engages a slotted plate.
Patent GB-192195-A (GB)
Title: Improvements relating to devices for supporting rivetting tools, and the like
IPC: B21J15/38
Filed: 1921-11-07
Abstract: 192,195. Gordon, D. A. Nov. 7, 1921. Riveting.-A support for a pneumatic riveting machine 4 is arranged to permit movement of the tool in cones of varying size or in planes passing through the axis. The support comprises a conical sleeve 1 adjustably bolted to a yoke 8 having magnetic or other devices 11 to secure it to the work. The nose 4<c> of the machine is carried in a universal joint 15 adapted to slide, against the action of springs 15<a>, on bars 12 secured to the sleeve 1. The rear 4<a> of the machine is carried bv a slide 22 which can be locked, by a spring-pin 23, in adjusted position in a slot 3, Fig. 2, of a. rotary disc 2 which is pressed against ball bearings 6 by a spring 7, Fig. 1, and collar 4b. A chipping tool A is ad. justably carried by a jointed support 18 and is held out of the way when not in use by a hook 19.
Patent GB-533558-A (GB)
Title: Improvements in high frequency amplifiers including thermionic valves
IPC: H03F1/08
Filed: 1939-11-07
Abstract: 533,558. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and ALDOUS, W. H. Nov. 7, 1939, Nos. 29591/39 and 13188/40. [Classes 39 (i) and 40 (v)] In a high frequency amplifier, operating at 10 Mc. or higher frequency, a valve having an accelerating grid is used and a subsidiary anode is provided drawing current through the control grid but not through the accelerating grid. An inductance is provided in series with the auxiliary anode to cancel the component of input conductance due to the inductance in the cathode lead. Fig. 2 shows an arrangement in which the inductance, in the auxiliary anode lead, LA = LK. Sa+SA/SA. CKC/CAC, where LK is the inductance in the cathode lead, SA, Sa the mutual conductance to the auxiliary and main anodes, respectively, and CKC, CAC the effective control grid-cathode and auxiliary anode capacities respectively. In a push-pull amplifier, Fig. 4, two subsidiary anodes are provided, each drawing current from the common cathode 2 through one of the control grids and fed through a compensating inductance so adjusted as to reduce the loss in efficiency due to the finite transit time of the electrons. To prevent increase in shot noise separate bands of activating material in the cathode may be provided for the auxiliary anodes. The inductances associated with the anodes may be arranged either inside or outside the valve.
Patent GB-908309-A (GB)
Title: Polyurethane castings
IPC: C08G18/10
Filed: 1960-08-26
Abstract: A process for the preparation of a polyurethane casting comprises reacting an organic compound having a molecular weight of at least 800 and containing a plurality of hydroxyl groups with an organic polyisocyanate in a first step, the amount of polyisocyanate being 300 to 900% in excess of that required to react with all the free OH groups of the organic compound, and subsequently reacting the product of the first step with a cross-linking agent comprising an alcohol containing at least two hydroxyl groups (at least 75% of the hydroxyl groups of the cross-linking agent being of secondary and/or tertiary nature) and casting in a mould, the amount of cross-linking agent being insufficient to provide one free hydroxyl group for each free isocyanate group of the product of the first step.  Polyesters (including polyester amides), polyhydric polyalkylene ethers or thioethers and polyacetals are suitable reactants of molecular weight above 800, those of molecular weight between 1,000 and 3,000 and hydroxyl number 30 to 80 being preferred.  The cross-linking compounds are preferably monomeric or dimeric alcohols with molecular weights below 500.  Specified are butane-2,3-diol, hexane-2,5-diol, heptane-2,4-diol, nonane-2,4-diol, pinacol, 2-methylpentane-2,4-diol, cyclopentane-1,2-diol, cyclohexane-1,4-diol and cyclohexane-1,3,5-triol.  Acid substances such ashydrochloric acid may be added with the cross-linking component to extend the casting time.  N-methyl-morpholine and dibutyl tin di-2-ethyl hexoate are suitable curing catalysts.  In examples castings are prepared from (1) to (3) a glycol-adipic acid polyester, and (1) naphthylene-1,5-diisocyanate and hexane-2,5-diol; (2) and (3) diphenylmethane 4,41-diisocyanate and butane-2,3-diol or hexane-2,5-diol respectively; (4) and (5) polythioether of thiodiglycol, naphthylene-1,5-diisocyanate and (4) butane-2,3-diol or (5) hexane-2,5-diol; (6) polypropylene glycol, naphthylene diisocyanate and butane-2,3-diol.  The products can be used for making gearwheels, door stops and shock-absorbers for air-hammers.
Patent GB-648326-A (GB)
Title: Improvements in circuit arrangements for establishing the direct current level in television systems
IPC: H04N5/18
Filed: 1947-11-06
Abstract: 648,326. Television. RADIO CORPORATION OF AMERICA. Nov. 6, 1947, No. 29623. Convention date, Nov. 21, 1946. [Class 40 (iii)] An arrangement for establishing the D.C. level in a television system comprises a pair of normally non-conducting'paths bridging a pair of terminals, each path including an electron discharge device and an impedance element and one of the paths including, in addition, a gas discharge tube, both paths being simultaneously rendered conducting at predetermined spaced intervals, whereby the potential level at one terminal is made to differ by a predetermined amount from the potential level of the other terminal during the conducting intervals. In the arrangement shown in Fig. 2 the two paths, the resistance components of which are made equal, comprise, for the first path, diode 10, resistor 23, gas discharge tubes 40 and one secondary winding of transformer 14, and, for the second path, diode 12, resistor 24 and a further secondary winding of transformer 14, and are rendered simultaneously conducting by means of keying pulses 16 applied to the primary of the transformer, the secondaries of which supply pulses 18, 20 of equal amplitude to the anode and cathode of diodes 10 and 12 respectively. The video signal 32, the D.C. level of which is to be controlled, is applied at terminal 30, the synchronizing pulses being in phase with the keying pulses 16, and the D.C. restored signals are obtained at terminal 34, the actual D.C. level being equal to the sum of the level determined by the synchronizing signals and half the voltage drop in the gas discharge path. Applications of the arrangement according to the invention to the reinsertion of the D.C. level at the modulating electrode of a picture reproducing tube and at the control grid of the video amplifier in a television receiver are described with reference to Figs. 5 and 6 respectively (not shown).
Patent GB-1084596-A (GB)
Title: Improvements in or relating to electric incandescent lamps
IPC: H01K1/54
Filed: 1965-07-13
Abstract: 1,084,596. Incandescent electric lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 13, 1965 [July 16, 1964], No. 29659/65. Heading H1F. The lamp comprises a light pervious bulb having a tungsten filament and a filling of inert gas and bromine, the lamp being designed so that the temperature of the filament during operation is so high that its effective life ends before the comparatively cold metal parts in the lamp are damaged by chemical attack by the bromine, and the bromine content at the beginning of the life of the lamp is between 5 Î 10<SP>-8</SP> and 5 x 10<SP>-7</SP> gm. molecules of bromine per c.c. of bulb capacity. The lamp bulb may be a narrow quartz tube with the filament arranged axially, the distance between the filament and the bulb wall being such that the wall reaches a temperature of 300‹ C. or higher during burning. The filling may be a rare gas and nitrogen or a mixture of these with the addition of bromine.
Patent GB-1529595-A (GB)
Title: Rolled joint construction in nuclear fuel channels
IPC: F16L13/16
Filed: 1976-07-16
Abstract: 1529595 Pipe joints CANADIAN GENERAL ELECTRIC CO Ltd 16 July 1976 [21 July 1975] 29743/76 Heading F2G A tube 14 of a zirconium-niobium or zirconium aluminium alloy is joined to a hub 12 of stainless or chromium-molybdenum steel by internal rolling over a zone 18, the hub 20 being formed internally with at least two pairs of annular grooves 22, disposed symmetrically about a joint centre line 20, and into which the material of the tube 14 is rolled. The grooves preferably have a truncated conical section and the hub 12 may alternatively be in the form of a tube plate having a plurality of bores therein.
Patent GB-718089-A (GB)
Title: Improvements in or relating to magnetrons
Inventor: LARUE ALBERT DURBIN
IPC: H03K19/16
Filed: 1952-11-25
Abstract: 718,089. Magnetrons. RAYTHEON MANUFACTURING CO. Nov. 25, 1952, No. 29876/52. Class 39(1) A tunable multi-cavity magnetron having a tuning structure comprising a plurality of tuning elements each of which' extends into one of the cavities and is movable with respect to the cavities, the tuning structure being made of conductive material and each pair of adjacent tuning elements comprising an electrical circuit which is able to become resonant at some particular frequency, is characterized in that all of the resonance frequencies of each electrical circuit of the tuning structure are remote from the operating frequency range of the magnetron. In one form, Fig 3, the tuning structure comprises a cylinder 27 supported by a ring 26 and supporting tuning elements 24 each of which comprises a pair of vanes arranged in the form of a V. Pairs of tuning elements are separated alternately by slots in the cylinder 27 extending nearly to the ring 26 and by slots extending to rectangular apertures in the cylinder 27. The ring 26 may be attached to a movable pole-piece connected to the envelope by a bellows, Fig 1 (not shown). In a modification, of which Fig 4 is a developed view, two tuning elements are supported by each segment of the cylinder 27, adjacent segments being separated by rectangular apertures 41. In further modifications, Figs 5 and 6 (not shown), each segment of the cylinder supports three or four tuning elements, the segments being separated by rectangular apertures. Instead of capacitance tuning, inductance tuning or a combination of inductance and capacitance may be used. Specification 718,088 is referred to.