baber/WOPTO huggingface dataset:
Patent GB-979990-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L29/00
Filed: 1963-03-21
Abstract: 979,990. Semi-conductor devices. GENERAL ELECTRIC CO. March 21, 1963 [March 23, 1962], No. 11233/63. Heading H1K. A semi-conductor device comprises a body of semi-conductor material having a pair of spaced base electrodes of different contact area, and a zone of opposite conductivity type adjacent the smaller base electrode forming a PN junction with the body. The device may comprise a unijunction transistor wherein most of the resistance in the body between the two base electrodes is adjacent the smaller electrode, allowing the closer spacing therefrom of the control PN emitter junction and electrode, and thus providing a shorter turn-on time, a higher stand-off ratio and a lower emitter saturation voltage. The unijunction transistor may comprise, Fig. 1, fernico conductive member 8 having two openings through which extensions 3 of a glass insulating base extend. Leads 4 and 5 extend through the glass base and the openings and are respectively connected to leads 11 and 12. A third lead 6, is connected to member 8. A slab of N-type semi-conductor 10 is soldered by a gold/antimony alloy to the gold-plated surface of member 8, thus forming a large area base contact, having a lead 6. Lead 11 is also of the gold/antimony alloy and forms a second small area base contact with slab 10. Lead 12 is of aluminium and forms a rectifying contact with the slab 10. Leads 11 and 12 are fused to the slab by the passage of large current pulses. A cap 2 is provided. The rectifying contact may be made to the side of the slab, Fig. 4 (not shown). Alternatively the slab 20, Figs. 5 and 6, may be formed with an etched base 21, having the smaller base electrode 22 connected to the bottom thereof. The large area base contact 24 is made to the other side of the slab, the leads thereto also serving to support the slab, and the rectifying contact 23 is also made to the other side of the slab, opposite the positions of contact 22. A layer of semi-conductive material may be applied by diffusion or epitaxial growth to the upper surface of the slab 20, of lower resistivity than the slab, but of the same type of conductivity and having a thickness less than the spacing between contacts 22 and 23.
Patent GB-527519-A (GB)
Title: Foil for passage through a fluid
IPC: B64C3/14
Filed: 1939-04-13
Abstract: 527,519. Aerofoils. DAVIS, D. R. April 13, 1939, No. 11252. Convention date, May 9, 1938. [Class 4] A streamline form, e.g., for the cross-section of an aerofoil is given by the following ordinates, A being a constant for any one section and # varying from 0 to #/2 radians, viz. :- The best values for A are stated to lie between .93 and 1.05 and a basic curve derived from the formula may be modified by increasing or decreasing the ordinates by a constant percentage. In a modification, the leading 50 per cent. only of the aerofoil may conform to the stated shape.
Patent GB-142132-A (GB)
Title: Improvements in or relating to systems for supplying energy to electrical circuits
IPC: H02J7/34
Filed: 1920-04-23
Abstract: 142,132. Jaubert, J. F. P. March 7, 1919, [Convention date]. Systems of charging and discharging batteries. -A generator A charges successively sections 6' - - b<5> of the battery B, the voltage of the generator being only sufficient to charge one section. All the sections in series are used to supply the outer circuit. The successive connexion of the sections to the generator is effected by the switch C which is moved automatically either electrically or mechanically through gearing to give a sharp step-by-step change. The switch may be moved by clockwork.
Patent GB-326061-A (GB)
Title: Improved means for protecting metal rollers, bowls and cylinders as used in the textile and paper trades from the action of acids
IPC: D06B23/02
Filed: 1929-04-13
Abstract: 326,061. Wareing, T. April 13, 1929. Rollers are protected against acids by a coating of phenol-formaldehyde to which is added flour emery or other abrasive.
Patent GB-933456-A (GB)
Title: Poly-ª -olefines
IPC: C08J3/12
Filed: 1961-03-29
Abstract: The bulk density of a polyolefin is increased, e.g. from between 2 to 10 pounds per cubic foot up to from 30 to 50 pounds per cubic foot, by slurrying the particulate polyolefin (containing less than 25% by weight of inert organic liquid) in water and then heating to 5 DEG to 15 DEG C. below the Vicat softening point of the polyolefin.  The ash content of the polyolefin is reduced and the products may be obtained in the form of granules ranging in size from 2 to 10 Tyler mesh.  The polyolefin may be derived from ethylene and/or propylene, butene, 3-Me-butene, 4-Me-pentene or hexene, and specified organic liquids are hydrocarbons (in particular mineral spirits) and alcohols.  The polyolefin may be one obtained by polymerization in an inert organic liquid using a Group IV, V or VI metal oxide or salt as catalyst, e.g. chromium oxide on silica, alumina, zirconia or thoria, or alkali metal promoted molybdenum oxide on alumina, or ethyl aluminium sesquichloride/titanium trichloride/hexamethyl phosphoramide as catalyst.  The excess inert organic liquid may be removed by heating in water at 90 DEG  to 100 DEG C.
Patent GB-378876-A (GB)
Title: Improvements in or relating to current limiting devices
IPC: H01C7/13
Filed: 1931-04-17
Abstract: 378,876. Variable resistaaces. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., Caxton House, Tothill Street, London, OAKLEY, P. D. and ALDING- TON, J. N., of Siemens Electric Lamps & Supplies, Dock Road, Preston. April 17, 1931, No. 11494. [Class 37.] A ballast resistance comprises a tungsten wire of a diameter not exceeding 0À03 millimetres enclosed in dry hydrogen under a pressure of from 1 to 30 millimetres of mercury. In a specific example the diameter of the wire is about 0À015 millimetres and the pressure about 10 millimetres of mercury. The wire may be coiled into an open helix having a diameter of from 3 to 10 times that of the wire. A number of parallel-connected wires may be mounted in the same envelope.
Patent GB-1530745-A (GB)
Title: Door hold back apparatus
IPC: E05C17/50
Filed: 1977-03-18
Abstract: 1530745 Door hold-open device CATERPILLAR TRACTOR CO 18 March 1977 [19 Aug 1976] 11548/77 Heading E2F A door hold open device comprises a hook member 23 pivotally located on a mounting member 20 and adapted to engage a latch 14 on a door; a resilient device 24 (e.g. a pad of elastomeric material) being provided on the mounting member to be engaged by the latch to hold the hook member in the latched position.
Patent GB-945671-A (GB)
Title: 2-sulphamoylthiazoles and a process for their preparation
IPC: C07D277/52
Filed: 1960-04-01
Abstract: The invention comprises compounds of the formula: <FORM:0945671/C2/1> wherein X is hydrogen, carboxyl, carbo (C1-5 alkoxy) or chlorine, Y is methyl, carboxyl, carbo (C1-5 alkoxy), phenyl, p-carboxyphenyl or p-carbo (C1-5 alkoxy) phenyl including alkalimetal salts of these compounds, and their preparation by chlorinating the appropriate 2-mercapto-substituted-thiazole (obtained for example by reacting a ketone of the formula Y.CO.CHX.Halogen with ammonium dithiocarbonate) and reacting the resulting sulphonyl chloride with ammonia. Products wherein X or Y contain a carboxyl group are conveniently prepared via the corresponding esters. p-Carbethoxphenacetyl chloride used as a starting material is made by treating p-cyanophenacetyl chloride with ethanol and dry hydrogen chloride.  Pharmaceutical preparations having diuretic activity comprise the above compounds of the invention in a suitable form for administration such as a tablet for oral use or a solution in an isotonic aqueous medium for injection.
Patent GB-1386577-A (GB)
Title: Electrical machine
IPC: H02K11/042
Filed: 1973-03-09
Abstract: 1386577 Dynamoelectric machines KRAFT. WERK UNION AG 9 March 1973 [10 March 1972] 11601/73 Heading H2A In an electrical machine, e.g. a synchronous alternator, incorporating a field winding connected to a rectifier assembly 3 which is connected to the armature of an A.C. exciter 1, the assembly comprises a plurality of rectifiers, e.g. diodes 19 and associated fuses 20 mounted on each of two metal rings 14, 15 which are secured by screwthreaded connections to and shrunk on to respective sides of a hub 13 secured to the machine shaft 4, with shoulders of the rings engaging over the external periphery of the hub. In the embodiment shown, the exciter 3Ph. rotor armature winding has connections 12 taken via a connection assembly 11 to connection elements 32 held in slots in a shaft projection 33 by a shrunk-on ring 34, which lead via conductors 36 and a bolt (37), Fig. 5, to straps 38 connecting to connections (23), Fig. 3, of opposite fuses 20. The radially outer fuse connection strips (24), Fig. 3, are bolted to straps 28 lending to the radially inner connections 29 of the diodes 19 which are screwed at 30 into the rings 14, 15 which thereby form D.C. bus rings to which are bolted radial connection elements 46 which in turn are connected via radial bolts 42, 43 passing through the shaft 4 and conductors 39, 40 in a shaft bore 41 to the machine field winding. The shrunk-on ring 34 is connected to the exciter armature winding neutral point and also forms a measurement slip ring to examine for earth faults. Circuit blocks 51 each comprising in series a capacitor and a resistor are connected by leads 55, 56 between the two rings 14, 15 in order to reduce any voltage peaks. The exciter and rectifier assembly are cooled by air taken from the machine pressure chamber and flowing in a path shown by the arrows, entry and exit being via a readily detachable pipe 62. Housing windows 68, 69 are provided to observe the exciter and the diodes, and the shaft end has a coupling 5 whereby the alternator may be driven at both ends by, e.g. a gas turbine at each end.
Patent GB-751407-A (GB)
Title: A container for keeping beverages hot or cold
Inventor: KIRCHER PAUL JOHN
IPC: A47J41/00
Filed: 1954-04-22
Abstract: 751,407. Cold and heat retaining vessels. LANDERS, FRARY & CLARK. April 22, 1954, No. 11628/54. Class 64(2). [Also in Group XVII] In a container for keeping a beverage hot or cold and comprising an inner shell 32 spaced at the sides and bottom from an outer shell 10, an out-turned flange 50 around the top of the inner shell 32 has a downwardly facing groove into which is sealed an upwardly directed flange 60 on the inner edge of an inwardly directed flange 58 at the top of the outer shell 10 ; the bottom of the outer shell is fixed to the bottom of the inner shell, e.g. by a screw 44 engaging in a projection 38. The groove tapers and contains a compressible gasket 54 having a slot which receives the flange 60. The bottom of the inner shell has radial strengthening ribs 48. The inner shell may be moulded from ureaformaldehyde or phenol-formaldehyde resin, and the outer shell made of metal. Glass wool, asbestos or other insulating material 76 may fill the space between the two shells. A handle 18 is attached by screws 22 with compressible washers.
Patent GB-759550-A (GB)
Title: Improved arrangement for leading out electric wires from containers of apparatus andthe like
Inventor: WALKER HERBERT
IPC: H01G4/224
Filed: 1954-04-22
Abstract: 759,550. Carrying conductors through partitions; mounting terminals. BRITISH INSULATED CALLENDER'S CABLES, Ltd. April 21, 1955 [April 22, 1954], No. 11673/54. Classes 36 and 38 (1). [Also in Group XXIII] A conductor 5 having a - rubber-like covering 7 is passed through an aperture in a metal plate, the aperture having a collar 3 through which the covered conductor may pass without substantial compression of the covering, and a construction 9 is formed in the collar intermediate its ends to ensure fluid-tight closure of the aperture. The conductor 5 may be one terminal of a capacitor 1 enclosed in a fluid-tight aluminium casing 2. The other terminal 6 is similarly sealed through the casing. Specification 669,580 is referred to.
Patent GB-494256-A (GB)
Title: Improvements in or relating to aeroplanes
IPC: B64D7/02
Filed: 1937-04-23
Abstract: 494,256. Aircraft guns and mountings therefor. REDGRAVE, K., and SCOTTISH AIRCRAFT & ENGINEERING CO., Ltd. (in Liquidation). April 23, 1937, Nos. 11701 and 11702. [Class 4] [Also in Group XXI] In an aeroplane having a body of aerofoil cross-section and rectangular form in plan one or more gun mountings are pivotally disposed in the body and are connected to the frame or skin thereof by bracings through which the forces of recoil are distributed. As shown aero-engines are mounted in the forward portions 2 of the body 1 and a gear 4 is mounted between the engines. The tail surfaces are carried on outriggers 6. The gun, which may be of 37 mm. bore, is movable on trunnions 9 journalled in members 10 mounted on a ring 11 rotatable in guides 12. The guides 12 are displaceable on frame-members 13 on operatior of a hydraulic or screw-jack 15. The framemembers 13 are connected together and supported by a ball-joint 18 mounted on the skin of the body. The ring 11 carries a seat 24 and is trained by operation of one of two hydraulicjacks 30. A guide 21 prevents damage to the aircraft structure. The frame 13 is bracec by members 28 including resilient shock-absorb ing devices 27 and secured to the junction of frame members or to the skin. Further guns 33 may be mounted in inverted mountings Portions of the body 25 carrying a transparent portion 27 are raised simultaneously with the guns to form a hood. According to the first Provisional Specification gun blast and flash eliminators; bomb carriers and access doors in the fuselage, additional guns of small calibre and a rear gun in a retractable turret may be provided.
Patent GB-313697-A (GB)
Title: Improved method of and apparatus for raising liquids under pressure
IPC: B67D1/04
Filed: 1928-04-21
Abstract: 313,697. Lawrence, J. E. April 21, 1928. Direct air-pressure apparatus, non-automatic; air and gas compressing devices, applications of. -Apparatus for raising beer &c. comprises a compressor 6 which delivers air through a cooling and cleansing liquid in a receiver 1, the liquid being forced by the air pressure through a pipe 7 into an upper tank 8 to provide a hydrostatic head. The air is drawn off through a pipe 4 and reducing valves 17 to the casks 19 and forces the beer &c. through pipes 20 to the tap 21. A float 9 in the tank 8 controls a switch 16 of the motor driving the compressor.
Patent GB-542648-A (GB)
Title: Improvements in aircraft steerable wheel mountings
IPC: B64C25/50
Filed: 1940-07-16
Abstract: 542,648. Steering vehicles. MACLAREN UNDERCARRIAGE CO., Ltd., MACLAREN, O. F., and BAYNES, L. E. July 16, 1940, No. 11774. [Class 79 (v)] [Also in Group XXXIII] A steerable-wheel mounting for aircraft comprises a non-steerable part providing a steering axis, a steerable part mounted thereon and itself carrying the wheel hub, and remote-controlled steering means acting between the two parts and housed mainly or entirely within the wheel hub. The steering means are preferably hydraulic. In the construction shown in Figs. 1 and 2 applied to a landing-wheel a wheel fork 13 carries a fixed axle 12 to which is secured a vertical' sleeve 15 acting as a pivot for a swivel member 11 on which the wheel hub 8 rotates on bearings 10. The member 11, is swivelled for steering by the vertical movement of a piston 24 on a vertical rod 14 having at its ends cross-heads 18, 19 provided with rollers 18<SP>1</SP>, 19<SP>1</SP> engaging diagonal slots 20. 21 in the fixed sleeve 15 and vertical slots 22, 23 in the member 11. Vertical movement of the rod 14 causes it to rotate on its axis due to the diagonal slots and this rotation is transmitted to the member 11 by the vertical slots. Fluid-pressure is applied as required through nipples 29, 30 to the space above or below the piston 24 which works in the sleeve 15 as a cylinder and is normally kept in a central position by springs 27. 28. In the construction shown in Fig.. 6 in plan the swivel member 33 is mounted on the axle 32 through vertical trunnions for steering and is swivelled by means of a plunger 40 working in the axle as a cylinder, this plunger carrying a sliding arm 41 connected by a pivot pin 42 to the member 33 so as to steer the latter. According to the Provisional Specification bevel gearing may be provided between the steering swivel and the fluid-pressure means. Specification 118,158, [Class 79 (v)], is referred to.
Patent GB-247046-A (GB)
Title: Improvements in devices for filling and sealing hollow confectionery
IPC: A23G3/20
Filed: 1925-05-06
Abstract: 247,046. Fritz, A. May 6, 1925. Drilling- machines, - A machine for drilling, filling, sealing, and delivering hollow confectionery bodies comprises a turntable 4 carrying equally spaced circularly arranged holders 2 for the hollow bodies, a vertical slide 19 having brackets 16, 17, 18 which carry the drilling, filling and sealing means respectively and a delivery device which transfers the confections from the holders to an endless conveyer 52. The turntable 4 is mounted on a vertical shaft 11 which is rotated intermittently by a rotating tappet 74 which engages notches in a wheel 75 on the shaft 11, the table being held stationary, whilst the various operations on successively arranged confections are performed simultaneously, by the engagement of a disc 8 with curved portions between the notches. The slide 19 is reciprocated by levers 47, 76 and a cam 48 on the main drive shaft 6. On the descent of the slide 19 the drill 25, which is preferably driven by an electric motor 9, enters a hollow confection the drill passing through a conduit 20, Fig. 7, which is connected to an air blast to blow shavings to a receptacle. The conduit 20 is carried by a cross bar 77 mounted on rods 24 which telescope into sockets 23 and carry springs 78 which tend to press the conduit against the confection. The holders 2 for the confections, each comprise a cup in halves, one part being fixed and the other part being slidable by spring and cam means to hold or release the confection. The delivery device comprises two sets of gripping-arms 62 carried on arms 53 on a rotary shaft 56 so that when one set of grippers are engaging a confection in its holder 2 the other set is delivering a confection to a V-sectioned sponge rubber strip 72 on the conveyer 52. The shaft 56 is arranged to rotate 180‹ for each forward movement of the turntable 4 and is moved axially by a cam on the sha't 6. The arms 62 are pivoted at 63 to members 61 which enclose a spring 91 and a sliding member 66 having a projecting pin 65 which lies between the arms 62, when they are opened and retains them in the open position. The arms are opened on the descent of the shaft 56 by the engagement of a stationary wedge with pins 67 carried by the arms 62 and are closed by a spring 64, the pin 65 being raised to allow this by the engagement of a screw carried by the slide 66 with the holder 2. The conveyer 52 is moved by pawl and ratchet mechanism. Several sets of drilling &c. devices may be used with one turntable.
Patent GB-182600-A (GB)
Title: Improvements in or relating to gas burners
IPC: F23D99/00
Filed: 1921-06-13
Abstract: 182,600. Scrace, F. June 13, 1921. Hatching and rearing appliances.-In an incubator, an atmospheric gas burner of the kind composing a mixing-tube B having a closed end D and outlet apertures C is mounted on a base-piece A, provided with a wire or like arm L for supporting a mirror H so that the state of the flame can be observed from outside the incubator.
Patent GB-1388787-A (GB)
Title: Electrostatic spray gun
IPC: B05B5/03
Filed: 1973-03-12
Abstract: 1388787 Electrostatic spray guns ATLAS COPCO AB 12 March 1973 [13 March 1972] 11824/73 Heading B2F In an electrostatic powder spray gun the electrode 21 is within the duct 14 and comprises an annular base 35 and a forwardly extending portion 35 which may be solid, as shown, or comprise a plurality of needles (Fig. 8 not shown), forming an annular edge 35a having radial clearance from the duct wall and being so set in from the mouth of the duct that it cannot be touched by hand. The duct is of insulating material and is connected to a source of air borne powder, air also being supplied through passage 28. A deflector 23 is mounted on a spindle 24 supported on spokes and vanes 18, 22 which impart a swirling motion, the spindle being surrounded by a tubular part 17 which forms an annular duct connected through the vanes 18 to the air passage 28. The electrode may be conical (Fig. 4 not shown) or cylindrical (Fig. 6 not shown).
Patent GB-792854-A (GB)
Title: Composition and method for sealing porous metal articles
IPC: C08G63/676
Filed: 1956-04-18
Abstract: Compositions for sealing porous metal articles comprise (1) a water-dispersible polyester derived from a glycol of the form <FORM:0792854/IV (a)/1> where R is hydrogen, methyl or ethyl and n is an integer such that the molecular weight of the glycol is from 200 to 600, and an ethylenicallyunsaturated dicarboxylic acid; and (2) styrene or vinyl toluene in amount from one-third to one times the weight of polyester.  Specified glycols are tetraethylene glycol, hexaethylene glycol, tetrapropylene glycol and pentapropylene glycol. Specified acids are maleic acid, fumaric acid, chloromaleic acid or their anhydrides, and the cyclopentadiene adducts of maleic acid or anhydride, e.g. cis-3,6-endomethylene delta-4-tetrahydrophthalic acid.  Up to 5 mol. per cent of the acid may be replaced by a saturated dicarboxylic acid, e.g. phthalic acid or anhydride, or by tetrahydrophthalic acid.  The compositions may comprise up to 40 per cent of a non-water-dispersible polyester derived from the above-mentioned unsaturated dicarboxylic acids, optionally together with phthalic acid or anhydride, adipic acid or sebacic acid, and glycols of the form <FORM:0792854/IV (a)/2> where n is 1 to 3 and R is hydrogen, methyl or ethyl, e.g. ethylene glycol, trimethylene glycol, 1,2- and 1,3-propane diols and 1,2-, 1,3- and 1,4-butane diols.  Catalysts, e.g. benzoylperoxide, methyl ethyl ketone peroxide, cyclohexanone peroxide and azodiisobutyronitrile, inhibitors, e.g. benzoquinone, hydroquinone, paratertiarybutyl catechol, guaiacol, orthodinitrophenols, orthotrinitrophenols and phenylene diamines, and agents, such as oxalic, phosphoric or citric acids, to prevent staining, may be added.  Suitable articles, e.g. of aluminium, magnesium, copper, bronze and iron, may be obtained by casting or by sintering compacted metal powders.  Preferably they are impregnated by cleaning and degreasing, placing in an autoclave under reduced pressure, covering with the impregnating composition and the pressure increased and then released.  The articles are then drained, washed, e.g. with warm water containing a small amount of detergent, rinsed and dried, and the impregnant cured, e.g. by heating at 95 DEG to 180 DEG  C. U.S.A.  Specification 2,514,389 is referred to.