baber/WOPTO huggingface dataset:
Patent GB-581683-A (GB)
Title: Improvements in or relating to amplifiers of electromagnetic energy
IPC: H03F1/50
Filed: 1941-06-06
Abstract: 581,683. Valve amplifying circuits. STANDARD TELEPHONES & CABLES Ltd., and LEV Y, M. M. June 6, 1941, No. 7176. [Classes 40 (iii) and 40 (v)] A selective thermionic amplifier for periodically repeated pulses is arranged to amplify only those frequencies necessary for defining the form of the impulses so as to improve the signal noise ratio. The frequencies to be amplified may be harmonically related and a delay network may be used to produce the required selectivity. The amplifier may have two negative feedback paths one giving a feedback constant with frequency while the other is of constant amplitude but varying continuously in phase and may comprise a delay network, Fig. 4 (not shown). Fig. 5 shows a single negative feedback path through a Wheatstone bridge one arm of which includes a delay network D, as shown, in series or in parallel, Fig. 5A (not shown) with one of the impedances Z1 ... Z4. Fig. shows a three stage amplifier in which cathode resistance RC provides a constant feedback while a variable feedback is taken through delay network or artificial line L. In this way the line may have relatively large attenuation since by adjustment of potentiometer P the relative valves of the feedbacks may be so adjusted that the amplifier gain compensates for the attenuation in the delay network. Vector diagrams, Figs. 6, 7, 8 and 11 (not shown) are given to demonstrate the offect of the feedback circuits. The desired response may theoretically be obtained by the use of a delay network by utilising the reflection produced by an open or short-circuited output. The reduction in selectivity produced by the attenuation of the network may be eliminated by combining part of the input energy with energy passed through the delay network terminated by an impedance Z equal to the image impedance, Fig. 12. Instead of providing transformers T1, T2, the energy may be combined by arranging the output of the network in series with part, of the. input in the grid circuit of an amplifier, Fig. 13 (not shown) or energy from the two paths may be fed to separate valves with a common anode load, Fig. 14 (not shown). The network may consist of a number of sections having series elements of resistance and inductance with mutual inductance between adjacent sections and shunt resistance and capacity, Fig. 10 (not shown).
Patent GB-948644-A (GB)
Title: Improvements relating to boxes and crates
IPC: B65D85/34
Filed: 1961-02-28
Abstract: 948,644. Crates. R. B. DARBY. Feb. 22, 1962 [Feb. 28, 1961; May 25, 1961], Nos. 7215/61 and 18864/61. Heading B8P. At least three adjacent walls of a collapsable crate are formed from spaced wooden bars 13 connected by spaced slats 14, the bars being of a length equal to the combined length of the walls, and one face of each bar having 90 degrees, V-notches 12 of a depth slightly less than the depth of the bar. The bars are folded at right angles at the notches and metal reinforcing strips or wires 13 stretched around the corners. The assembly may form the sides and ends of a crate which is completed by a separate bottom, or the bottom and two sides completed by separate slatted sides 16, 17, Fig. 6. The strips 13 are laid over the bars opposite the notches 12 and the slats 14 laid over the strips and stapled to the bars through the strips. When the crate is erected the strips are thus stretched around the outside corners. The sides 16, 17 are secured to the assembly by clips 19 of sheet metal or wire. The crate may be lined with hardboard, and the ends may be higher than the sides for stacking.
Patent GB-855132-A (GB)
Title: Adhesively bonded batting
IPC: D04H1/48
Filed: 1957-03-05
Abstract: 855,132. Agglutinated fibrous materials. CELANESE CORPORATION OF AMERICA. March 5, 1957 [March 5, 1956], No. 7257/57. Class 140. A strong, springy batting consists of a needled mat of staple fibres which are united at their points of contact by a bonding agent present in quantity amounting to 2 to 75% of the weight of the product and distributed throughout the batting so as to leave the same with an open porous structure. Specified fibres are cotton, rayon, nylon, polyacrylonitrile, linear polyesters, polymethanes, glass, polyaminotriazoles, and the acetate, propionate, butyrate, acetate propionate or acetate, butyrate of cellulose. The fibres may be crimped. The batting may be formed by means of a batting card or by suspending the fibres in a stream of air or water and depositing them therefrom on to a foraminous member, after which the batting is passed through a needle loom. Specified bonding agents are solutions or emulsions of polyvinyl acetate, polyvinyl chloride, polyesters and rubbers in water or any liquid that is inert to the staple fibres. The bonding agent may be applied by immersion and the batting is then dried e.g. by hot air.
Patent GB-443751-A (GB)
Title: Improvements in or relating to gun breech mechanisms
IPC: F41A3/10
Filed: 1935-03-06
Abstract: 443,751. Ordnance breech mechanism. SKODA WORKS, PLZEN, 37n, Jungmannova, and HASEK, J., 18, Vladislavova, both in Prague. March 8, 1935, No. 7269. Convention date, March 8, 1934. [Class 92 (ii)] A hollow breechscrew 26 integral with a cam-plate 19 is arranged in line with a breechblock 11 carried by a rocking spindle 15 having a crankpin 18 in engagement with the cam grooves of the plate 19, so that, starting from the closed position shown, a rotation of the cam plate and breech-screw by a handle 20 first releases the axial pressure on the breech-block and then swings the breech-block about the axis of the spindle thereby opening the breech. The weight of the swinging parts is counterbalanced by a spring. The breech-block may be mounted directly on the spindle 15 and formed with a rim engaged by a hook 25 on the breech-screw, as shown in Fig. 4 ; the breech-screw 26 then exerts closing pressure directly on the breech-block and withdraws it for opening by the hook 25, which does not interfere with the outward swing. Or, as shown in Fig. 1, the breech-block is mounted in a breech-nut 10 in a spring cage 12 and held against rotation by a strap 12a, these parts being carried by the spindle 15. The nut 10 and the breech-screw temporarily interconnect by a dog clutch 24. The axial closing pressure and its release is applied to the breech-block 11 by the nut 10 when this is rotated by the breech-screw ; and the nut and breech-block are swung in and out together when the dog clutch is out of engagement and the cam groove in operation.
Patent GB-687238-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J35/10
Filed: 1951-03-29
Abstract: 687,238. X-ray tubes. MACHLETT LABORATORIES. Inc. March 29. 1951 [April 1, 1950], No. 7319/51. Class 39(i) The rotating anode of an X-ray tube has a central shaft 19 of bearing metal, against which the ball bearings 22, 23 bear directly. The shaft has oppositely disposed concave shoulders 20, 21 against which the balls are held by outer races 15, 16. The lower race 15 is fixed within housing 12 by set-screws 18, while the upper race is free to move axially, a compression spring tending to urge the balls 23 up the curved shoulder 21. It is stated that in prior art structures, the slight tolerances necessary in assembly give rise to a small degree of looseness and play which causes vibrational noise and frictional rubbing, and that this play is reduced in the present arrangement, which further provides some automatic compensation for dimensional changes due to both wear and expansion. For the modification of Fig. 2 (not shown) the outer races at both ends are fixed, while in Fig. 3 (not shown) the central portion of the shaft is stationary, and has conical shoulders. In this arrangement, one or both of the outer races may be spring-loaded, as in Fig. 1. U.S.A'Specification 2,378,588 is referred to.
Patent GB-1200434-A (GB)
Title: Longitudinally watertight telecommunications cables
Inventor: SCHEFFLER ERNST
IPC: H01B7/288
Filed: 1969-02-11
Abstract: 1,200,434. Cables. KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTE A.G. 11 Feb., 1969 [13 Feb., 1968], No. 7380/69. Heading H1A. In a longitudinally water-tight telecommunications cable a core comprising conductors 2 with a cavity or solid insulation which is insensitive to moisture, e.g. plastics material, a layer 3 of absorbent paper which swells on entry of water and which is preferably in the form of a helical tape winding with overlapping edges, is provided around the core. The cavities between the conductors 2 may be filled with a cellular material which swells on entry of water, e.g. polyurethane foam, and which may also be viscous The sheath 4 may be of polyethylene.
Patent GB-1515767-A (GB)
Title: Apparatus for washing vegetables fruit and other similar foodstuffs
Inventor: COMMIANT MICHEL
IPC: A47J43/24
Filed: 1976-02-25
Abstract: 1515767 Apparatus for washing fruit or vegetables COMPAGNIE GENERALE BELGE DES ISOLANTS 25 Feb 1976 [25 Feb 1975] 07385/76 Heading A4C Apparatus for washing vegetables, fruit and similar foodstuffs comprises a basin-like element 1, a basket 2, releasably held in the element 1, rotatable about an axis 3, driving means 4 for rotating the basket about the axis and means 5 for distributing water over the contents of the basket. The element 1 is fitted with a cover 6 which has a pivot 14 which fits within a hub 13 fitted to a disc 7 which is pressed resiliently at rim 25 against the basket, so that the disc rotates about the pivot 14 and causes rotation of the basket. The driving means 4 may be a tape 15 which is fixed to the hub 14 and may be caused to rotate the hub 14 by initially wrapping the tape about the hub, then pulling on a ring 17 attached to the tape, the tape being initially unwound by such pulling but then rewinds about the hub by an inertia effect. Alternatively the hub may be driven by similar manuallyoperated means, e.g. a rocking system, or by an electric motor. Means 5 comprises a funnel-shaped aperture 9 which coincides with an aperture or apertures in the disc 7 which as the disc is rotated cause water to pass over the foodstuffs. Water may be allowed to drain from element 1 via apertures 12 or may be allowed to accumulate by replacing apertures 12 with a closable aperture.
Patent GB-987590-A (GB)
Title: Improvements in or relating to the control of current in plasma
IPC: H02K44/08
Filed: 1962-02-27
Abstract: 987,590. Generators operating by electromagnetic interaction with fluids. AVCO CORPORATION. Feb. 27, 1962 [June 1, 1961], No. 7566/62. Heading H2A. In a magnetohydrodynamic generator the load current flowing between opposed pairs of segmented electrodes 23a, 24a is varied by controlling the flow of longitudinal Hall current between electrodes 23a, 23d by switch 31. When switches 26 are closed (switch 31 open) load current flows in inverters 25 and A.C. power is delivered at secondary winding 29 of transformer 28. If switch 31 is now closed the Hall current flowing between electrodes 23a, 23d will reduce the load current to a value where switches 26 may be opened without arcing and this in turn will stop the flow of Hall current so switch 31 may be opened on no load. By cyclic operation of the switches and variation in the value of Hall current various power output waveforms can be obtained (Figs. 3, 5, 7, 8, not shown). In these modifications the Hall current circuit may contain a tuned circuit (Fig. 3, not shown), or be controlled by a reversing switch so that a charged capacitor may be connected in series with the electrodes giving a controllable instantaneous current in this circuit, Fig. 6 (not shown). In a further modification special terminal electrodes are used for carrying the Hall current instead of the extreme main electrodes Fig. 9, (not shown). Specifications 966,968 and 970,052 are referred to.
Patent GB-421252-A (GB)
Title: Improvements in or relating to electrolytic cells and processes
IPC: C25C7/00
Filed: 1933-03-13
Abstract: 421,252. Electrolysis. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. March 13, 1933, No. 7577. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 13, 1933]. [Class 41] In processes employing finely divided electrode material or processes in which finely divided material is deposited on one of the electrodes, the electrolyte is withdrawn from the chamber containing the finely - divided material and returned to the other chamber, circulation being completed through the diaphragm. Obstruction of the diaphragm is thereby prevented. In the cell shown, the electrolyte is supplied to the diaphragm vessel 3 and withdrawn from the outer space containing a granular anodic material through annular filter pipes 7. In a modification, the electrolyte is withdrawn through a filter forming a false bottom to the cell. In an example, copper is deposited from a solution containing 30 gms. of copper and 150 gms. of sulphuric acid per litre at a current density of 200 amps. per sq. metre, using cement copper as anode material. The invention is applicable to the production of lead and manganese peroxides.
Patent GB-374921-A (GB)
Title: Improvements in overhead ropeways and the like
IPC: B66C21/10
Filed: 1931-03-12
Abstract: 374,921. Overhead ropeways. WHITE, J. W., Railway Works, Widnes, Lancashire. March 12, 1931, No. 7586. [Classes 78 (iv) and 104 (ii).] In an overhead ropeway of the type in which the carriage 4 is supported from a carrier rope 3, is traversed by a second rope 6, and in which the load can be raised or lowered by a hoisting rope 10, the last rope is supported at spaced distances by means of hangers 11 on the carrier rope 3. The hangers may consist of rollers 12 on the rope 3 connected by bars to rollers 13 supporting the rope 10. Stops 15 placed along the rope 3 limit the travel of the hangers. In another form, the hanger consists of a clamp on the rope 3 supporting the roller 13. Specification 23513/98, [Class 78, Lifting &c.], is referred to.
Patent GB-423332-A (GB)
Title: Improvements relating to regulating devices for immersed-electrode-type electric water heaters
IPC: F24H1/10
Filed: 1934-03-10
Abstract: 423,332. Automatic regulation. SHEVLIN, J. T., 15, South Street, Finsbury, London.- (Siemens-Schuckertwerke Akt.-Ges. ; Siemensstadt, Berlin) March 10, 1934, No. 7703. Addition to 416,546. [Class 38 (iv)] [See also Group XXXVII] The three-coil relay of the parent Specification is replaced by a switch comprising two coils 2, 3 and a counterweight 9 with which co-operate two relays 14, 15 responsive respectively to normal current and to excess current in the electrode boiler. Mercury switches 16 are mounted on the depending portion of a three-armed lever 5 which is operatively connected by its remaining arms to coil 3 and to a dashpot 10. A second lever 4 carries a projection adapted to engage a stop 8 on the counterweighted arms and the coil 2 is connected to operate the lever 4. The mercury switches have steatite rings surrounding their contacts to prevent conducting connection between them when in the horizontal position. In the de-energized condition of the apparatus the weight 9 puts the mercury switches in position to operate the electrode adjusting motor to minimum load position. On switching on the coils 2 and 3 are energized and the motor connections reversed to increase the current consumption. On reaching normal load the relay 14 de-ener. gizes coil 3 and the switch takes up the position shown. When the rise in water temperature has sufficiently increased the load current the coil 15 responds to de-energize coil 2, and also coil 3 if the relay 14 should have failed ; the motor then operates to reduce the current consumption.
Patent GB-684653-A (GB)
Title: New or improved cooler for materials of plastic consistency, especially edible fats such as butter and margarine
IPC: A23D7/05
Filed: 1951-04-03
Abstract: 684,653. Plate heat-exchangers. AKTIEBOLAGET SEPARATOR. April 3, 1951 [April 3, 1950], No. 7703/51. Class 64 (iii) In a cooler for materials of plastic consistency, e.g., butter or margarine, comprising parallel rotatable discs 1 each enclosed in a chamber with plane walls parallel to the'discs, the material to be cooled flowing through the chambers and the coolant flowing through spaces between them, the discs are provided with scrapers 3 located in recesses in the discs so that they are' free to move perpendicular to the discs. One edge of each scraper is inclined so that the scraper is pressed against the upper or lower wall of the chamber. A conveyer worm 9 is provided on the shaft 10 for the discs 1, near the outlet for the cooled material. The shaft, which is hollow, is heated internally by steam, hot water, or electricity, a tube 16 and air layer 17 shielding from excessive heating the part of the shaft adjacent to its driving gear 18. Holes are provided in the discs near their outer edges, for the passage of material if the spaces at the edges of the discs are clogged.
Patent GB-1382349-A (GB)
Title: Method and apparatus for the production of peroxide derivatives of high-purity ozonides by ozonization of the correspodning olefins and subsequent treatments
IPC: C07D323/02
Filed: 1972-02-18
Abstract: 1382349 Gas/liquid contact SNIA VISCOSA SOC NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA SpA 18 Feb 1972 [19 Feb 1971] 7719/72 Heading BIF [Also in Division C2] An apparatus suitable for conducting an olefin ozonolysis reaction comprises a reactor 10, Fig. 1, which is supplied with ozone from a generator 18 via a distributor 22, and with at least two types of solvent from reservoirs 36 and 38 through metering devices 32 and 34 respectively which reactor is provided with a bottom outlet 40 and a top outlet leading via duct 42 to condenser 44 and traps 48. Alternatively, Fig. 2, the reactor 110 may be connected at its lower outlet 140 to a pump 112 which sends the reaction product into a centrifuging device 114, from which a lighter phase is recycled to the reaction via conduit 116.
Patent GB-617613-A (GB)
Title: Improvements in or relating to method and apparatus for film-type distillation
IPC: B01D3/10
Filed: 1946-03-12
Abstract: <PICT:0617613/III/1> <PICT:0617613/III/2> In distillation involving the flow of the distilland over an evaporation surface in the form of a film and the condensation of distillate on an adjacent condensing surface, the distilland is repeatedly redistributed over the evaporation surface by the action of rollers.  In a preferred embodiment, the evaporation surface surrounds the condensing surface, and several rods, supported in rotatable rings, make rolling contact with the evaporation surface.  The invention may be used in the vacuum distillation of dioctyl phthalate, butyl phthalate, benzyl phthalate, oleic acid, vegetable oil fatty acids, p-isoheptyl diphenylamine, glycol dioleate, olive oil, lubricating oil, coconut oil and tricresyl phosphate; and also in the distillation of acetone at atmospheric pressure.  The still shown comprises a shell 14, an evaporation surface 28 heated by a jacket 24, and a condenser 33 supplied with cooling medium through pipe 35. Associated with the evaporation surface are six freely-rotatable rods 50 supported by rings 51, 52 which are rotated by motor 60, reduction mechanism 61 and gears 56.  The still is evacuated through port 20, and steam or a mixture of diphenyl and diphenyloxide is passed through jacket 24. The distilland is supplied through pipe 21 to groove 80 cut in the upper surface of ring 51 which is so perforated that the distilland is distributed round the top of evaporation surface 28.  The distilland flows down surface 28 in the form of a film which is continually redistributed by rotating rods 50.  The distillate flows down condenser 33 to gutter 45, and is withdrawn from the still through pipe 23.  The distillation residue leaves the evaporation zone through annular space 82, and is withdrawn from the still through pipe 22.  A modification with direct and individual rotation of each roller is described.  The invention may be applied to "hot core" stills.  Vacua of the order of 0.001 to 0.01 mm. are referred to.  The apparatus may be used for degassing liquids prior to their vacuum distillation.
Patent GB-540339-A (GB)
Title: Improvements in and relating to liquid spraying devices
IPC: A62C11/00
Filed: 1940-05-01
Abstract: 540,339. Piston extrusion apparatus. BICKFORD, J. G. A., and CLARK, M. M. May 1, 1940, No. 7855. [Class 102 (ii)] In a fire extinguisher garden sprayer, or like pistor extrusion apparatus, the piston 15 comprises a cup washer having a shirt portior 16 directed towards the closed end of the container 11, and has an aperture 17 through which the liquid is expelled and around which the piston is engaged by one end of a separately formed tube 20 with a jet or spraying nozzle 22 at its other end, the tube being guided longitudinally by means such as a cork or rubber tapered annulus 23, engaging the open end of the container. The tube 20 may be provided with fixed or adjustable gripping arms 21 and with a belled-out end 19 to receive a thickened portion 18 of the piston 15, the shirt 16 of which cooperates with an internal flange 14 on the closed end 13 of the container 11. The container and the piston may be sealed when not in use, the closed end of the container may include a non-return inlet valve, and the piston may be withdrawn by means of the nozzle or a separate tool. In a modification, the nozzle carries a flanged rubber annulus which engages an inwardly directed ledge fixed inside the container just below its top.
Patent GB-590675-A (GB)
Title: Improvements in electric furnaces, kilns and ovens
IPC: F27B9/06
Filed: 1945-03-29
Abstract: 590,675. Electric resistance furnaces. G.W.B. ELECTRIC FURNACES, Ltd., and TURNER, G. March 29, 1945, No. 7918. [Class 39 (iii)] An electricfurnace comprises heating elements 31 arranged on horizontal bars 26 mounted on a refractory supporting framework having sides formed of inter-engaging cylindrical blocks 19 having a recess 20 at one end and a projection 21 at the other so that when superposed the projection of one engages in the recess of the other to interlock and be retained in the required relationship, and forming a structure which can be withdrawn through an opening in the furnace roof by using lifting rods 32. The two lifting rods having T-shaped ends 33 are inserted in the central bore formed by the aligned central rectangular holes 23 in the blocks, so that on rotating the rods the T- shaped heads engage in recesses 25 in the bottom cross member 16.
Patent GB-288427-A (GB)
Title: Improvements relating to electrical apparatus for testing motor vehicle and other mechanical power transmission mechanisms
IPC: G01M13/02
Filed: 1927-03-22
Abstract: 288,427. Highfield, F. W., and Highfield Electrical Co., Ltd. March 22, 1927. Dynamometers, rotary-absorption. - In apparatus of the type comprising an electric motor and generator as described in Specification 267,779 for testing power transmission mechanisms a member is provided adapted to carry a plurality of the mechanisms to be tested and is movably mounted so that while one is being tested others can be mounted in position preparatory to testing. As shown in Fig. 2 the bed-plate a carrying the dynamo electric machines d, e is provided with a member b rotatable about a central pivot f and capable of carrying, at least, two mechanisms c to be tested. The motor d and generator e are slidably movable to disconnect the couplings i and permit the member b to be rotated. Alternatively the member b may be arranged to slide transversely across the bed-plate.