baber/WOPTO huggingface dataset:
Patent GB-763839-A (GB)
Title: Improvements in or relating to radiant heating tubes for heat treating furnaces
Inventor: HARRIS FLOYD E
IPC: F23M5/08
Filed: 1954-12-20
Abstract: 763,839. Radiant heating elements; furnace atmospheres. DOW FURNACE CO. Dec. 20, 1954, No. 36788/54. Classes 51 (1) and 51 (2). In a furnace for the heat treatment of articles in a special atmosphere heated by radiant tubes, each radiant tube is an improvement on that disclosed in Specification 648,329 and comprises a U-shaped alloy tube 56 mounted on a plug 54 removably disposed in the furnace roof, a tube 62 extending through it and opening into the furnace by a port 64, and a further concentric tube 68. The nested tubes 56, 62 and 68 define an annular passage 72 provided with spiral rods 82 forming a series of spiral passage ways for an incombustible air/fuel mixture supplied through the port 78, and also define an annular passage 70 supplied with secondary air through the port 76. The tube 62 may supply the atmosphere gas or it may be filled with catalyst such as nickel coated pieces of refractory or nickel shot and used as atmosphere gas generator. Alternately, the tube 62 may be shortened and closed at the lower end or it may be replaced by a solid bar. A modified radiant tube, Fig. 3 (not shown), comprises a straight tube with an additional concentric tube surrounding the central tube 62 and forming therewith an annular flue for the combustion products. A typical atmosphere, suitable for carbo-nitriding or cyaniding, comprises 40 per cent hydrogen, 40 per cent nitrogen, 19.5 per cent carbon monoxide with traces of carbon dioxide and ammonia. Specification 656,896 also is referred to.
Patent GB-1410994-A (GB)
Title: Control circuits for electric motors
IPC: H02P7/292
Filed: 1972-08-07
Abstract: 1410994 Automatic control of speed UNITED KINGDOM ATOMIC ENERGY AUTHORITY 25 July 1973 [7 Aug 1972] 36813/72 Heading G3R [Also in Division H2] A speed-control circuit for use with a serieswound commutator motor M comprises a diode D7 for shunting the motor and a full-wave rectifier FWR2 for energizing the motor through a thyristor SCR 1 and means such as R15 for deriving a control signal proportional to the amplitude of the motor current as SCR 1 shuts off at the end of each half cycle and means for causing the control signal to vary the triggering angle of said thyristor SCR1 in a sense to advance the triggering angle as the current increases. As described, transistor VT1 is turned off at the end of each half cycle from a full-wave rectifier FWR1, turning on VT3 which allows then a diode D5 to clamp the voltage across capacitor C2 to the voltage across capacitor C3 which is proportional to the motor current at the time SCR 1 shuts off. VT 1 becomes turned on at the beginning of the next half cycle, turning off VT3 and allowing capacitor C2 to charge exponentially via R9 until the emitter of VT2 reaches the voltage set in on the speed-adjusting potentiometer RV2 when VT2 becomes conducting, so as to trigger SCR 1 via an emitter follower VT4. The motor M may be connected via 100 yards of three-core cable TCC having self-capacitance C s  and including a reversing switch (not shown). Zener diodes D8, D10 expedite the turn off of SCR1. FWR1 may be omitted if diode D2 is connected to FWR2 via appropriate dropping resistors.
Patent GB-941765-A (GB)
Title: Sander pad for abrasive discs
IPC: B24D9/08
Filed: 1962-09-28
Abstract: 941,765. Rotary abrading tools. CARBORUNDUM CO. Sept. 28, 1962 [Nov. 8, 1961], No. 36839/62. Heading B3D. [Also in Division C3] A sander or polishing pad for carrying an abrasive sheet (not shown) on its front face 13 comprises a hub 2 for effecting attachment to a driving shaft and a disc 10 of substantial thickness made from a non-foamed elastomer comprising a urethane pre-polymer and a crosslinking agent, the disc being moulded around the hub. Preferably the material of the disc 10 includes an epoxy resin and the cross-linking agent is selected from the group consisting of a glycol, an amine and a diamine. A well 14 in the face 13 takes the head of a bolt by which the abrasive sheet is secured to the pad. To the hub 2 is welded at 8 and 9 a reinforcing plate 6 having radial projections 7, Fig. 3.
Patent GB-988127-A (GB)
Title: Suction pump for liquified metals
IPC: B22D39/00
Filed: 1963-09-19
Abstract: 988,127. Discharging crucibles. BROWN, BOVERI & CO. Ltd. Sept. 19, 1963 [Sept. 21, 1962], No. 36896/63. Heading F4B. [Also in Division B3] A device for conveying molten metal from a container 1 to a lower liquid level container 7 comprises a siphon pipe 3, 6, having at its highest point a chamber 5 which may be evacuated or filled with air as desired. The container 7 is first filled with melt. When the chamber 5 is evacuated via valve 14 and pipe 9, the chamber and siphon pipe fill with melt until the melt engages a contact rod 11 which actuates a circuit 12 causing the valve 14 to close. The siphon then conveys the melt continuously, the melt overflowing from the container 7 into a mould 15 until a valve 16 which may be controlled by a time element, is actuated to supply air to the chamber 5 and stop the flow.
Patent GB-823537-A (GB)
Title: Improvements in and relating to arrangements for switching or controlling direct currents in alternating current rectifying circuits
Inventor: KELSALL RICHARD HOPE
IPC: G05F1/32
Filed: 1955-12-23
Abstract: 823,537. Converting. METROPOLITANVICKERS ELECTRICAL CO. Ltd. March 22, 1957 [Dec. 23, 1955], No. 36899/55. Class 38 (2). D.C. is supplied to a load R which may be a motor from A.C. terminals A, B through a saturable reactor SR 1  in series with a parallel arrangement of rectifiers RC 1 , RC 2  each in series with a switch X, Y. With both switches closed, magnetizing current only flows through reactor SR 1 , and when one switch, e.g. X, is opened the reactor is saturated and D.C. flows through the rectifier RC 2  in the other branch. The D.C. can be reversed by closing for full-wave single and three-phase rectification are described (Figs. 3, 4, not shown). By substituting variable resistors for the switches X, Y, the value of the D.C. may be controlled, the flux in the reactor being only partially reversed each alternate half-cycle. Fig. 5 shows an arrangement by which the value of the output current is periodically varied and reversed to form an A.C. of frequency different from that of the supply. As brush 13 moves over a series of contacts from N to Z, resistance GR is first introduced in steps, and then removed in steps from being in series with rectifier RC 2 , and then brush 11 moves over the same contacts to connect and disconnect resistance GR from being in series with rectifier RC1. When not moving over the contacts N-Z, brushes 11, 13 engage slipring 16 connected to load R, and these brushes are permanently connected to rectifiers RC 1 , RC 2  through brushes 10, 12 sliding on sliprings 14, 15. The resistor may be mounted on and connected to commutator segments on a rotor, the brushes remaining stationary (Fig. 6, not shown).
Patent GB-450966-A (GB)
Title: Improvements in and relating to automatic gramophones and the like
IPC: G11B17/16
Filed: 1934-12-27
Abstract: 450,966. Magazine gramophones. SLATER, G., 128, Thornbridge Drive, Frecheville, Sheffield. Dec. 27, 1934, No. 37022. [Class 40 (ii)] Relates to automatic record-changing mechanism for use in conjunction with gramophones or like sound reproducing apparatus of the kind in which the records are stacked upon a stationary post or like member having an offset portion or shoulder engaging the centre of a record and changing records is effected by lateral displacement of a record to disengage the same from the said offset portion or shoulder. According to the invention, the stationary record support extending above the turntable at an inclination to the vertical is non-rotatably mounted at its lower end and the turntable is carried by a sleeve member rotatable about the stationary support. The invention also consists in record-changing mechanism of the kind above described in which the turntable rotates about a fixed element affording a mounting for the record support which extends above the turntable at an inclination to the vertical and is supported solely at the lower end thereof. As shown, the turntable 1 has a socket 2 fitting over the upper portion of a hollow driving sleeve 3 adapted to be rotated through gear 8 about a fixed sleeve 5 mounted in a boss 6 attached to or forming part of the frame of the mechanism. The record supporting post 9 is removably supported within the sleeve 5, its lower end being formed with a flat 10 and inclined faces 11, 12 which co-operate with similarly shaped faces on an insert 13 rigidly secured within the sleeve 5. The upper part of the post is inclined to the vertical, is preferably curved at 14 and terminates in a straight inclined portion 15 which is offset with respect to the curved portion so as to form a pair of shoulders 16, 17 and on which the centres of a stack of records are supported as shown. The record supporting means also comprises a movable platform 18 provided with abutment means 19 adapted to engage the edge of a record resting on the platform, the latter being carried on a lever 20 pivoted on a shaft 21 and having an extension 22 which rests against the surface of a cam 23 mounted on a shaft 24 adapted to be coupled to the driving motor and given a single revolution at the termination of the playing of a record. Actuation of the lever 20 in this manner causes the platform 18 and its abutments to displace the lowermost record of the stack laterally to free its centre from the shoulder 16 and allow it to slide down the post 9 on to the turntable. In order to accommodate different sized records, the abutments may be adjustable on the platform, the platform adjustable on the lever 20 or the shafts 21 and 24 displaceable. According to a modification, the post 9 may have a straight instead of a curved portion 14 and may extend directly into the frame of the mechanism and itself form a bearing for the turntable or driving sleeve. If desired, the platform 18 may be duplicated.
Patent GB-1074215-A (GB)
Title: Rigid crack resistant resinous casting composition
IPC: C08K3/34
Filed: 1965-08-31
Abstract: A liquid resinous-filler composition which can be cured to a rigid state and which is resistant to cracking in thermal cycling comprises a mixture of (A) 100 parts by weight of either a liquid epoxy resin, epoxy-novalac resin or mixtures thereof with an epoxy equivalent weight of 150-450; (B) 400-575 parts by weight of powdered beryl (beryllium aluminium silicate); (C) 50-90 parts by weight of an anhydride curing agent; and (D) 0.05 to 2 parts by weight of a curing accelerator.  The curing accelerator may be an organic amine, a metal amine chelate or a polyborate ester. Examples are dimethylaminomethyl phenol and triethanolamine titanate/trihexyleneglycol biborate complex.  The composition may be used for encapsulating electrical apparatus, especially foil wound coils in the manufacture of transformers when it is heated for a time sufficient to fully cure the composition (e.g. 16 hours at 150 DEG  C.).
Patent GB-919102-A (GB)
Title: Improvements relating to hydraulic transmission devices
IPC: F16H61/64
Filed: 1961-10-17
Abstract: 919,102. Hydraulic apparatus. FABBRICA ITALIANA MAGNETI MARELLI S.p.A. Oct. 17, 1961, No. 37238/61. Class 69 (2). An hydraulic transmission device comprises a pump P which communicates with a supply of fluid through a hole 3 and has a piston 5 with a seal 4, and a receiver R having an operating member 12 moved by a receiver member 9 movable by the fluid pressure from the pump against at least one elastic return element 11, such as a spring, the receiver member, at rest, being spaced from the operating member a distance S1 at least as great as that S required for the seal 4 on the piston to pass the hole 3 so that when the receiver member is moved through the distance S1 the pressure in the transmission is insufficient to cause damage to the seal as it passes the hole. In the rest position, the space 1 in front of the piston 5 communicates with a reservoir 2 through the hole 3 to enable variations in the volume of fluid in the transmission to be compensated. When the piston is moved forwardly against a spring 6, fluid is displaced through duct C to move the receiver member 9 against the spring 11 which is of insufficient strength to cause the pressure in the transmission to rise above a value that would cause damage to the seal as it passes the hole. When the receiver member 9 contacts the member 12 to cause movement thereof, the pressure in the transmission increases but the seal has moved to a position beyond the hole.
Patent GB-910586-A (GB)
Title: Magnetic device
IPC: G11C11/14
Filed: 1960-11-01
Abstract: 910,586. Magnetic storage devices. HUGHES AIRCRAFT CO. Nov. 1, 1960 [Nov. 27, 1959], No. 37558/60. Class 38 (2). [Also in Group XXXIX] A storage device comprises a thin magnetic film 12 overlaid by a conductor 14, both being overlaid by a thin film 10 and all being overlaid by a conductor 16, read-out being effected by applying a field parallel to the conductors 14, 16. If, as shown in Fig. 1a, conductors 14 and 16 are energized in coincidence and the easy axis of each film is perpendicular to the conductors, film 12 is magnetized to a stable state one way with the conductors energized equally in the same sense while when conductor 14 is energized in the same sense as before but conductor 16 is energized in the reverse sense, the film 10 is magnetized to a stable state the other way. Thus the " 1 " state has film 12 magnetized to the right while the " 0 " state has film 10 magnetized to the left. The films are sufficiently conductive so that they may be read-out by a current passed through them along the easy axis and transverse to the conductors 14, 16. This is shown in Fig. 2a where the effect of read-out on a " 1 " state is illustrated, read-out rotating the magnetization of film 12 clockwise. Read-out of the "0" " state would rotate magnetization of film 10 anticlockwise. The conductor 16 is used as a sense conductor as well as for writing and detects a pulse of one polarity when a " 0 " state is read and a pulse of. the opposite polarity when the " 1 " statÚ is read. A number of such storage devices may be arranged side by side and, as is shown in the construction of Fig. 4, it is then convenient to provide the magnetic films 10 and 12 as strips of Permalloy about 6000 Angstroms thick in common to the sets of conductors 14, 16. Readout can then be made in parallel from all the devices by passing a current along the strips. The multi-cell device is constructed on a soft glass substrate 56 by successively depositing a permalloy film, insulator such as silicon monoxide, a set of aluminium conductors, more insulator, a second film, more insulator, and a second set of conductors. Non-destructive readout may be achieved by making the width of the strips of magnetic film small enough and the energy of the read-out pulse small enough so that the rotation of the film magnetization is not stable but such as to revert when the readout pulse ends.
Patent GB-811078-A (GB)
Title: Improvements relating to the cutting of oil grooves by means of lathes
IPC: B23B5/48
Filed: 1956-12-11
Abstract: 811,078. Attachments for turning. DAVIDSON, D. Dec. 11, 1956 [Feb. 20, 1956], No. 37785/56. Class 83 (3). In a lathe attachment for cutting oil grooves in shafts, bearings, &c., an oblique cam rotating concentrically with the work-holder reciprocates a tool axially to cut the grooves. The work 1, Fig. 1, is held in a chuck 3 to which the oblique cam 91 is attached by adjustable spacers 14, and the tool 5 is mounted on a slide 6 carrying a follower 16a whose ball-end 16 engages the groove 13 between the plates 9, 10 of the cam. In a modification, the cam 24, Fig. 3, is secured by a bolt 23 inside the chuck 3 holding the work 1, and has an oblique groove 13 engaging the follower on a shank 16a carrying the tool 5. The cam is formed in two parts 19, 21 and a spacer 20, and is clamped by bolts 22 and may be made by cutting the parts from a tube. The cam may be situated in a bore of the work.
Patent GB-1033693-A (GB)
Title: Composition for combatting molluses
Inventor: BOYCE CLIVE BERESFORD CHALLIS
IPC: A01N37/44
Filed: 1963-09-27
Abstract: The invention comprises the specific compounds of one or both tautomeric formulae <FORM:1033693/C2/1> wherein the benzene ring is substituted as follows:-2,3-, 3,5- and 2,6-dichloro; 2,4,5- and 2,4,6-trichloro; 2,4-dinitro; 2-chloro-4-nitro; 2,4-dichloro-3-cyano; 3-chloro-2-cyano; 3-trifluoromethyl; 3-trifluoromethyl-4 (or 6)-chloro; 4-ethoxycarbonyl; 4-morpholino; 4-morpholino-2,5-diethoxy. These compounds are prepared by diazotizing the appropriate aniline and coupling the resulting diazonium salt with malononitrile under neutral or mildly basic conditions.  A number of analogous compounds are also described.ALSO:Molluscicidal compositions comprise a compound of one or both the tautomeric formulae <FORM:1033693/A5-A6/1> or a salt thereof, wherein X is H, Cl, NO2, CN, CF3, alkyl or alkoxy and R is H, Cl, NO2, alkoxycarbonyl, alkylamino or phenylamino, together with a solid or liquid carrier and/or a surface active agent.  The compositions may be in the form of wettable powders, granules, pellets, tablets, blocks, thin sheets, aqueous dispersions or emulsions or emulsifiable concentrates.
Patent GB-1066870-A (GB)
Title: Improvements relating to photo-flash lamps
IPC: F21K5/08
Filed: 1964-09-18
Abstract: 1,066,870. Flash bulbs. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 18, 1964 [Sept.23, 1963; July 17, 1964] No.38159/64. Heading G2L. A photo-flash lamp comprises a sealed transparent bulb contains a solid substance, an ignition system and a gas consisting mainly of one or more fluorine compounds reactive with said substance upon ignition. The gas may also comprise a gaseous or volatile hydrocarbon, many of which are specified, to increase light output and decrease the time interval between ignition and maximum light flux. Specified fluorides are those of I, O, N, Si, elements of Groups III and IVa, and the actinides. Suitable solid substances are Al, Zr, Th, Al/Mg, B and Si. The ignition system may comprise a tungsten filament coated with a small quantity of ignition paste comprising Zr, PbO2 and nitrocellulose.
Patent GB-928884-A (GB)
Title: Improvements in or relating to a rake wheel provided at its circumference with resilient tines
IPC: A01D80/00
Filed: 1959-11-13
Abstract: 928,884. Haymaking machines. C. VAN DER LELY N.V. Nov. 13, 1959 [Dec. 4, 1958], No. 38625/59. Class 6(3). Relates to a haymaking machine of the rake-wheel type wherein each rake-wheel has circumferential resilient tines. According to the invention the tines are arranged in pairs 10, 11, united by a connecting piece 12, the tines of the pair being spaced apart around the wheel-circumference by a radial angle of more than 45 degrees. Between any two tines 10, 11 of a pair are arranged at least two more tines 14, 17, each of which forms part of a different pair. The rakewheel has an annular hub 5 flanked by plates 4, 6 to form a hollow spool which is mounted on needle bearings 2 on a crank 3. The spool is connected to a rim 9 by flat spokes 8 and incorporates covers 24, 28 to prevent hay from reaching the needlebearings. Each double-tine has two portions 22, 23 within the rim joined to the arcuate connecting-piece 12. The connecting pieces are all arranged within the spoolportion and extend over arcs of about 25 degrees around the hub. The arcs are not circumferential to the hub but are arranged obliquely so that one portion 22 is pressed against one plate 4 while the corresponding portion 23 is pressed against the other plate 6 by the mutual resilience of the adjacent connecting-pieces and the pressure exerted by bolts 7 securing the plates 4, 6, together, Fig. 2, the tines have some freedom of movement in this arrangement.
Patent GB-1021623-A (GB)
Title: A process for manufacturing films of expanded polystyrene
IPC: C08J9/00
Filed: 1963-10-01
Abstract: Films of expanded polystyrene are manufactured by feeding polymer of styrene and a nucleating system into an extrusion barrel which comprises a plasticizing section and a mixing section; the mass is conveyed continuously through the plasticizing section where the pressure on the mass is increased as it melts; a volatile (halo) hydrocarbon is injected in the beginning of the mixing section; the mass obtained is intensively homogenized as it is conveyed through the mixing section to the annular orifice of the die where it is extruded with expansion of the polymer, the expanded polymer of styrene is then blown up from the interior to form a tubular film. The pressure may increase as the mass is conveyed through the plasticizing section until it attains a value equal to the pressure of the mass at the entrance to the die.  The mixture is homogenized by subjecting it to successive considerable and less considerable tangential forces by passing the mass over a number of grooved mixing elements which divide the annular flow into a number of separate streams.  The mass in the last portion of the plasticizing section and the first portion of the mixing section is preferably between 150 DEG  and 300 DEG  C.  The mixture on leaving the die preferably has a temperature between 100 DEG  and 160 DEG  C.  The polymer of styrene may be polystyrene or a polystyrene containing a certain quantity of rubber-like (co)polymers such as a butadiene-styrene copolymer; it may be prepared by mixing the rubber-like polymer with polystyrene or by interpolymerization of a solution of the rubber-like polymer in a styrene monomer.
Patent GB-1073889-A (GB)
Title: Improvements in decorating and filling confectionery
IPC: A23G3/28
Filed: 1965-09-10
Abstract: 1,073,889. Decorating and filling cor fectionery. J. MACMANUS. Sept. 10, 1965 [Sept. 15, 1964], No. 38779/65. Heading A2A. In a method and apparatus for depositing a thick, flowable decorating or filling substance, such as icing, custard, whipped cream or like aerated emulsion, on or in units of confectionery, such as pastries, cakes or sweetmeats 12 carried on a moving conveyer 10, the substance is fed, through a pipe 18, into the hopper 17 of a pump 14, e.g. of the type described in Specification 1,038,681, which delivers the substance, at a desired rate, through a discharge pipe 49, a pipe 53 and a flexible hose 16, into the larger end of a flexible and collapsible Savoy-type bag 15, which tapers towards an unobstructed outlet opening at its tip, in which opening a conical, metal discharge nozzle, e.g. a star-tube, may be located. The hose 16 may be made of synthetic resin reinforced with a helix of flexible wire. The bag 15 may be made of polythene sheet or plasticcoated cloth. An operator moves and guides the filled bag manually, from one unit 12 to another, to deposit the substance on or in each unit, and digitally squeezes or twists the bag, when necessary, to aid discharge of the substance therefrom. When the operator stops squeezing or twisting the bag, e.g. during movement from one unit to another, discharge from the bag ceases, temporarily, until it is refilled.
Patent GB-849319-A (GB)
Title: Improvements in and relating to light meters
IPC: H01L31/06
Filed: 1957-12-13
Abstract: 849,319. Photo-cells. MEGATRON Ltd., VESZI, G. A., and MARKUS,. P. Dec. 15, 1958 [Dec. 13, 1957], No. 38785/57. Addition to 728,212. Class 37 The photo sensitive surface of a photo-cell as described in the parent Specification is divided into a plurality of separate sections, each being provided with an electrode. Switching means may be provided to selectively connect one or more sections to an indicating instrument to provide multi-range facilities. The Figure shows a photo-sensitive surface having two concentric regions.2 and 3, supplied with metallic contact areas 6 and 5 respectively to which connection are made from the opposite side of the photo-sensitive layer by means of wires 8 and 9. The switching means for selecting the sections may also control the selection of shunt or series resistors associated with the indicating instrument.