baber/WOPTO huggingface dataset:
Patent GB-647946-A (GB)
Title: Improvements in apparatus for the protection of electrical installations against atmospheric discharges
IPC: H01T4/14
Filed: 1946-10-30
Abstract: 647,946. Protective arrangements. COUGNARD, J. L. Oct. 30, 1946, No. 32275. Convention date, Oct. 31, 1945. Drawings to Specification. [Class 38 (iv)] [Also in Group XXXVI] High-frequency atmospheric discharges on an electrical system, particularly an overhead line, are led to earth, without permitting the normal supply current to pass, by means of a pair of facing plates spaced apart in the open air, to form a capacitance, and connected respectively to earth and the line conductor which arrives straight and perpendicular to its plate with the feeder carrying the line current connected to the line so as to form an angle therewith, preferably a right angle. The plates may be parallel or diverge at the upper edge and in the case of a line supported by an insulator string each plate may be in the form of an annulus with the edges curving outwards. Areas and spacings of the plates is given for a specified voltage range.
Patent GB-942612-A (GB)
Title: An air-hydraulic gripping device
IPC: B25B1/18
Filed: 1961-09-08
Abstract: 942,612. Vices. MASCHINENFABRIK HILMA G.m.b.H. Sept. 8, 1961 [Sept. 10, 1960], No. 32284/61. Heading B3B. In an hydro-pneumatically operated vice, the actuating screw is adapted to be operated by a shiftable jaw coupling having an axially movable coupling shaft whose axially movable coupling shaft is connected to a control shaft of a valve controlling the supply of air to the device. The movable jaw 1 of the vice contains an air-hydraulic intensifier 2 comprising an air. operable piston 3 connected through a compressed air valve housed in control unit 5. The hydraulic piston 6 of the intensifier pressurizes an actuator piston 7, the reactive thrust being taken up by the screw spindle 8 which works in a captive nut. The screw spindle 8 is coupled to an operating handle 26 by a coupling shaft 11 mounted in a thrust bearing 15 which is held by a spring 16. A control shaft 13 has a disc shaped collar 13a engaging in a groove 11b in the shaft 11. The shaft 13 is mounted in a bush 12, a compression spring being interposed between the end of the shaft and the bush 1 allow yielding, axial movement of the shaft and bush. The bush 12 bears rearwardly against a ball 18 located in the mouth of a locating bush 19 in which is supported a compression spring 20. The spring 20 bears against a valve 21-23 which is held by a spring 24. In operation the handle 26 is turned to bring the jaw into contact with the workpiece, further rotation of the handle causing the coupling shaft 11 together with the control shaft 13 to be axially shifted and spring 20 to be compressed whereby valve plate 21 is pushed into contact with valve seat 28 and valve plate 23 is lifted from its seat to admit compressed air to the duct 4. The pressure in the oil chamber 30 is thus caused to rise and the jaw 1 urged in closing direction. In a modification the spindle 8 is driven by an electric motor. In another modification the intensifier is located alongside the actuating screw in the movable jaw.
Patent GB-760097-A (GB)
Title: Improvements in or relating to alkoxy silanes
IPC: C07F7/18
Filed: 1954-11-08
Abstract: The invention comprises bis-(trialkoxysilyl)-benzenes having the general formula: (RO)2(R1O)SiC6H4Si(OR1(OR)2, where each R is the same or different and is a branched-chain alkyl group of 4 to 12 carbon atoms and each R1 is the same or different and is a straight-chain or a branched-chain alkyl group of less than 13 carbon atoms.  The compounds may be the ortho, para or meta isomers or mixtures thereof.  It is preferred that the branches on the alkyl groups be alpha or beta to the oxygen atom.  The compounds may be prepared by addition of excess of the appropriate alcohols to bis-(trichlorosily)-benzene at temperatures below 20 DEG  C., followed by neutralization and stripping off excess alcohol.  Benzene may be used as a solvent. Alternatively, they may be prepared by trans-esterification in the presence of an alkaline catalyst.  The compounds are useful hydraulic fluids and may be blended for this purpose with siloxanes.  The examples describe the preparation of (1) m - bis - (tri - 2 - ethylhexyloxysily) - benzene; (2) and (3) m- and p-bis-(tri-sec.-butoxysilyl)-benzene; (4) p-bis-(tri-isoamyloxysilyl)-benzene; (5) a mixture of isoamyloxy and sec.-butoxysilyl benzenes; (6) a mixture of m- and p-bis-(tri-tert.-butoxysily)-benzenes.
Patent GB-1411286-A (GB)
Title: Gelatin hardening agent
IPC: G03C1/30
Filed: 1972-07-12
Abstract: 1411286 Hardened gelatine layers ILFORD Ltd 12 July 1973 [12 July 1972] 32489/72 Heading C3H [Also in Division G2] A method of producing a hardened gelatine layer comprises treating an aqueous gelatine solution with an aqueous solution of 2,6-octadiene-1,8-dialdehyde and then coating the resultant solution as a layer on a base. In a second embodiment of the invention a gelatinosilver halide material is produced in a process which comprises the step of treating an aqueous gelatino-silver halide emulsion with an aqueous solution of 2,6-octadiene-1,8-dialdehyde and then coating the aqueous emulsion as a layer on to a photo-base. The 2,6-octadiene-1,8 dialdehyde may be replaced by its tetraacetate.
Patent GB-1357555-A (GB)
Title: Solenoid valve mechanisms for anti-lock vehicle brake systems
IPC: B60T8/36
Filed: 1971-07-12
Abstract: 1357555 Fluid-pressure servomotor systems MULLARD Ltd 12 July 1971 32541/71 Heading G3P [Also in Division F2] To prevent skidding, the pressure in a brake cylinder 9 is relieved by a solenoid valve 4 connected to a wheel movement sensor 5 through a control circuit 6. The pressure applied to the brake cylinder by the master cylinder 1 is also reduced by a flow restrictor 17 connected to a piston 16 operated by fluid which has passed through the valve 4. When a coil C in the latter is energized, the closure member A is opened against a spring-load S1 and a rapid drop in pressure occurs at the brake cylinder until a disc AS having a flow aperture B4 engages a flange FL on the closure member to tend to close the valve in opposition to the field from the coil C and the force of a spring S2. A steady rate of flow through the valve is thus obtained and the pressure in the brake cylinder decreases linearly with time. When the valve 4 has again closed a pump 8 driven from the wheel 10 returns the fluid acting on the piston 16 to the brake system. Specification 1248788 and 1248787 are referred to.
Patent GB-605184-A (GB)
Title: Modulating system for carrier wave signalling
IPC: H03F1/07
Filed: 1939-12-20
Abstract: 605,184. Modulating systems. GROVES, W. W. (Aktieselskapet Elektrisk Bureau.). Dec. 20, 1939, No. 32602. [Class 40 (v)] Relates to modulating systems having two output valves 9, 17, so arranged that during periods of no modulation only one valve 9 delivers substantial energy to the load, whilst during positive modulation both valves deliver power, and during negative modulation the valves counteract each other. In order to decrease the power consumed during negative modulation, the system is designed so that the valve 9 (termed the carrier valve) is supplied with a carrier frequency voltage which, during positive modulation, is substantially constant, and during negative modulation is proportional to the modulating voltage (Eg1, Fig. 1, not shown), and the valve 17 (termed the side-band generator) is supplied with a carrier frequency voltage which, during positive modulation, is proportional to the modulating voltage; and during negative modulation rapidly approaches a limiting value as the negative modulating voltages increase (Eg2, Fig. 1, not shown). Both generators supply energy in phase to the load circuit 33 during positive modulation, while the grid bias voltage of valve 17 is so chosen that during zero modulation its power consumption is small. In the system shown in Fig. 4, the valve 17 is fed from a pair of valves 18, 19 fed in phase with carrier frequency and in push-pull with modulating voltage, the arrangement being such that during negative modulation the output is limited to a relatively low value, e.g. by including a resistance 25 in the grid circuit of the valve that is dominant during the negative modulation period. To prevent consumption of power in the anode circuit of the valve 17 during zero modulation, the grid voltage may be compensated by applying to the valve 19 a voltage lower than that applied to the valve 18. In a modified system, Fig. 6 (not shown), the limiting value of the grid voltage of the side-band generator is zero during negative modulation (Eg2, Fig. 7, not shown), so that modulated carrier frequency is applied to the side-band generator only during positive modulation without the use of a pushpull stage.
Patent GB-1574098-A (GB)
Title: Composite powder for use in manufacturing electrical contacts
IPC: C22C5/10
Filed: 1977-08-03
Abstract: In order to produce a contact piece consisting of silver and at least two oxides of base metals for electrical contacts having a small welding force, with a small amount of arc erosion at the same time, a melt consisting of silver and the base metals is processed to form a moulding by means of pressure atomising and internal oxidation, pressing, sintering and re-pressing of the atomised powder. According to the invention, cadmium, bismuth and/or lead are used as the base metals and water is used as the propulsion agent for the pressure atomisation. The proportion of base metals in the moulding is less than 20% by volume.
Patent GB-1034546-A (GB)
Title: Superconductive alloys
IPC: C25D11/00
Filed: 1964-08-11
Abstract: The cryogenic properties of superconductive alloys are improved by electrolytically liberating hydrogen on the alloy as a cathode in a hydrogen liberating electrolyte, such as an aqueous solution of HF, HCl, HNO3 and/or H2SO4 in concentration 5 to 25%, e.g. using a current density of 0.1 to 5 amps/sq cm.  The alloy is composed of at least one member selected from Ti, V, Nb, Zr, La, Ta, Th and U, and one different member of the group consisting of each of the foregoing members and Al, Zn, Ga, Cd, In, Sn, Hg, Th and Pb.  Examples specified are bi-metallic alloy in wire form comprising 10 to 65% Zr and balance Nb, with hydrogen present in sufficient amount to provide a 5 to 15% greater volume in the alloy, and the bi-metallic compound Nb3 Sn.  The bi-metallic Zr-Nb alloy may be subsequently hot and cold worked with intermediate anneals.
Patent GB-660112-A (GB)
Title: Improvements in or relating to machine tools
IPC: B23Q35/18
Filed: 1947-12-12
Abstract: 660,112. Copying by turning etc.; coiling. BAILEY METER CO. Dec. 12, 1947 [Oct. 29, 1945], No. 32829/47. Classes 83 (iii) and 83 (iv). [Also in Group XXIX] In a lathe, Fig. 1, the arm 24 of a tracer assembly 16 traverses a templet 17 as the tool 10 traverses a rotatable workpiece 11, the tool being movable at a uniform speed parallel to the axis of the workpiece by means of a lead screw 12 and being movable at a controllable speed towards or away from the workpiece at an angle, preferably 45 degrees, to the axis thereof by means of a hydraulically-operated. servomotor 13 which is adapted to be secured to the tool rest 9 so as to be angularly positionable therewith, the tracer assembly being carried by an arm 18 adjustably and pivotally connected to the tool rest so that the tracer arm is movable as a result of variations in the contour of the templet to effect actuation of a power regulator which controls the supply of fluid to the servomotor. The tracer arm is operatively connected to a valve member forming part of the tracer assembly and through which air under constant pressure bleeds to atmosphere. Movement of the tracer arm effects movement of the valve member to vary the bleed to atmosphere, such variations in the air bleed acting upon a bellows of a pilot valve assembly 23 for controlling the supply of fluid to the servomotor. The templet is adjustable according to the type of out desired. In a vertical turning and boring mill, Fig. 4, the workpiece 36 is mounted on a rotatable holder 35, the templet 38 is mounted on a verticallyadjustable saddle 39, and the servomotor 13 is angularly movable on a head 41 movable along cross rails 42 of the saddle 39. The direction of rotation of the workpiece is reversed as the tool 37 passes through the axis of rotation of the workpiece. The invention is stated to be applicable to other machine tools, e.g. milling machines, slotters, planers, and diesinking machines. Specification 600,193 and U.S.A. Specification 2,436,373 are referred to. Coiling.-For coiling springs of varying pitch, the tool is replaced by a guide through which the wire is passed, the guide moving along a rotating mandrel, on which the spring is coiled, as the tracer arm traverses the templet.
Patent GB-949503-A (GB)
Title: Noise attenuating method and apparatus
IPC: B64F1/26
Filed: 1960-09-26
Abstract: 949,503. Exhaust silencers. INDUSTRIAL ACOUSTICS CO. Inc. Sept. 26, 1960 [Oct. 6, 1959], No. 33053/60. Heading F1B. An acoustic attenuating duct comprises at least two opposing and generally mutually parallel cell units 30, 31, which are contoured and spaced to provide a constricted region I in the passageway 15, at least one of the units tapering away from the other unit to define a divergent and truncated exit section X having an included angle greater than 7 degrees in the passageway. The hollow interiors of the cell units may be filled or lined with a sound absorbent material such as glass fibre 35. Perforations 36 may cover entrance region E, intermediate region I and exit section X and may also be provided on trailing surfaces 37, 38. The surfaces in the entrance region E may be imperforate and convex or straight with flared leading and trailing edges. Ducts can be arranged in series or in parallel. Dimension wa may be equal to  of the attenuated frequency, ws is less than 2 wa and r is equal to wa. The perimeter area ratio in the region I may be greater than 5/6.
Patent GB-289842-A (GB)
Title: Improvements in or relating to gear transmission for automobile or like vehicles
IPC: B60K17/08
Filed: 1927-12-07
Abstract: 289,842. Soc. de l'Auto-DÚbrayage T. L. May 4, 1927, [Convention date]. Variable-speed gearing; clutches, free-wheel.- In variable-speed gearing for vehicles &c. having a one-way connection between the driving-shaft 1 and driven shaft 2 so that the latter may overrun the former on the direct drive, such connection is adapted to be locked at will to prevent overrunning. The pinion 5 which is effective for the direct drive and for the first reduced speed is loose on a sleeve 4 splined on the shaft 2. The one-way clutch connects the pinion 5 and sleeve 4 so that when teeth 5<c> on the pinion engage teeth 10<a> on an extension 10 of the shaft 1, the one-way direct drive is operative. When the sleeve 4 is thrust home by a striking collar 7, teeth 4<c> upon it engage relatively short teeth 10<b> on the part 10, so that the shafts 1, 2 are positively locked together. The one-way clutch comprises a coil spring 6a which for one direction of turning of loose pinion 5@ coils so as to grip a nut 6, so that the nut screws upon a steep thread 4a on the sleeve 4 until ratchet teeth 8 on the faces of nut and pinion drivingly engage. On the shaft 2 overrunning, the nut 6 unscrews. The pinion 5 is supported on the other side by a coned projection 4b. The screw thread 5<b> shown in the boss of the pinion allows the pinion to pass over the sleeve thread in assembling.
Patent GB-1386998-A (GB)
Title: Arrangement for the digital control of a controlled system
IPC: G05B15/02
Filed: 1972-07-14
Abstract: 1386998 Digital control system VEREINIGTE FLUGTECHNISCHE WERKEFOKKER GmbH 14 July 1972 [14 July 1971] 33167/72 Heading G4H In a digital control system in which the actual values of the controlled system are sequentially scanned and control signals are generated by comparison between the actual and nominal values, the actual and nominal values are conducted via a switching unit to an accumulator to which certain coefficients are also conducted, and, within a scanning interval, the accumulator successively determines coefficients of the control signal, stores them, and when all signal components are present, passes them via the switching unit to the control elements. As shown, the analogue actual values are fed from controlled system 1 to analogue to digital converter 7 where they are scanned and sequentially converted to "dual code" which comprises a number of pulses proportional to the analogue value. The digital signals, together with the nominal value and the coefficient from the coefficient memory 5 are fed to switching unit 6 and the switched signals to accumulator 7. Here the control signals are calculated from the three inputs and are stored. When all signals are present, they are conducted to switching unit 6 which limits the word length if necessary and thence to digital to analogue converter 8 and combined directing means which feeds the analogue control signals to the correct part of system 1. The sequential operation of the device is controlled by unit 4. In an alternative embodiment the coefficients are modified by the nominal value which is not supplied separately and the modified coefficient are updated as required since the control signals will now only indicate direction of variation of value to system 1.
Patent GB-428628-A (GB)
Title: A device for converting mechanical oscillations into audible sound
IPC: H04R7/00
Filed: 1933-11-27
Abstract: 428,628. Diaphragms. LENK, H., 14, Franz Eichertweg, Vienna. Nov. 27, 1933, No. 33177. Convention date, Nov. 28, 1932. [Class 40 (iv)] [See also Group XXXVIII] The Specification as open to inspection under Sect. 91 describes a diaphragm 1 for a gramophone sound-box 2 which oscillates freely within the sound box and has a bounding curve defined by the equation r<3> (x+R/3) = a constant, where r is the radius vector referred to the point of connection of the actuating arm 6 with the diaphragm, as origin ; R is the distance of the origin from the axis of the stylus driven spindle 7, and x is the distance of the end of the radius vector from this axis. This equation is deduced from the condition that the moment of the inertia forces on any radial line, about the origin, is constant. This subject-matter does not appear in the Specification as accepted.
Patent GB-465774-A (GB)
Title: Improvements in shaving brushes
IPC: A45D27/04
Filed: 1936-12-03
Abstract: 465,774. Shaving - brushes. TIEDEMANN, R. Dec. 3, 1936, No. 33177. [Class 19] A shaving-brush of the kind in which a stick of soap is fed forwards between the bristles is characterized by an elastic washer 12 which serves as a guide to the soap and also as a wiper for clearing it of moisture after use. The brush comprises a casing 5, Fig. 1, with a holder 2 for the soap 1. The holder 2 has studs 3 engaging longitudinal slots 4 in the casing 5 which may have external screw threads 6 to engage a nut 7 for feeding forward the holder 2. In a modification, Fig. 3, the holder 2 can be secured in an adjusted position by contraction of the casing. A cap 13 is mounted on a bevelled end 51 of the casing which is contracted by screwing up the cap. A flange 14 prevents undue deflection of the casing 5 inwards. The holder 2 is operated by studs 3.
Patent GB-392981-A (GB)
Title: Improvements in and relating to electric motor controllers
IPC: H02P1/06
Filed: 1931-12-02
Abstract: 392,981. Drum controllers. EVANS, R. M. L., Roselands, Harboro' Road, Ashton-on- Mersey, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Dec. 2, 1931, No. 33426. [Class 38 (iii).] A controller comprises a main drum 1 actuable to various positions on either side of a zero by a handle 21, and retained in such positions by a notched plate 22, which may be devoid of notches at the two extreme positions, so that the drum is returned to an intermediate position by a spring 35 when the handle 21 is released from an extreme position. An auxiliary drum 2 is urged away from its zero position by a weighted lever 62, but is restrained from movement by a roller 71 thereon engaging a cam 70 of the drum 1, until the drum 1 is displaced, and is returned to zero when the drum 1 is returned to zero. The speed of movement of the drum 2 is limited by a pendulum escapement device 82, 86. Movement of drum 2 from its zero position can be prevented by a coil 100 energized by the back E.M.F. of the motor, so that upon sudden reversal of the drum 1, the drum 2 cannot move from its zero position until the motor has slowed down sufficiently. The drum 1 may prepare the armature and field circuits and effect release of a brake, and the drum 2 may connect the circuits to the power supply, exclude resistance, and in the extreme positions cause field weakening.
Patent GB-1019346-A (GB)
Title: Improvements in or relating to packaging
Inventor: READE EDWARD TRAVERS
IPC: B65D81/113
Filed: 1962-08-31
Abstract: 1,019,346. Packages. WATCHWELL Ltd. Oct. 25, 1963 [Aug. 31, 1962; Sept. 4, 1962], Nos. 33431/62 and 33780/62. Heading B8C. Nested articles 13 are packed in cavities between blocks 10 of low density polystyrene, the central longitudinal axes of the cavities lying in the plane of the juxtapositioned faces. The nested articles may be equally sized such as cups or plates, or may be similarly shaped but graduated in size such as a wine glass, sherry glass and liqueur glass. The assembled blocks of polystyrene are placed in a cardboard box.
Patent GB-1395883-A (GB)
Title: Railway vehicle brake arrangements
IPC: B61H11/14
Filed: 1971-07-16
Abstract: 1395883 Increasing wheel adhesion GIRLING Ltd 11 July 1972 [16 July 1971] 33511/71 Heading B7J [Also in Division F2] The tread brake block 5 of a railway vehicle brake arrangement (see Division F2) may be made as a cleaning or friction-increasing member which is operable to clean the periphery of a wheel 2 or to deposit thereon friction-increasing material to increase adhesion between the wheel and the rail, in order to reduce the risk of skidding. The brake arrangement has a disc brake as well as the tread brake, the two brakes being operable simultaneously by a mechanical transmission system connected to a fluid pressure power actuator 8.
Patent GB-653721-A (GB)
Title: A stylus holder for electrical recorders
IPC: G01D15/02
Filed: 1948-12-31
Abstract: 653,721. Recording-apparatus. BENDIX AVIATION CORPORATION. Dec. 31, 1948, No. 33673. Convention date, March 12. [Class 106 (iv)] A stylus holder, Fig. 5, for electrical recorders comprises -a flat member 41 against which a spring wire stylus 25 lies, the member 41 being formed with a first shoulder 42 adjacent one edge and a second shoulder 43 intermediate the first shoulder 42 and a third shoulder 44 formed at a second edge, the second shoulder facing in a direction opposite to the first and third shoulders 42, 44 normally to hold the stylus in contact with those shoulders, there being means provided to retain the stylus against the flat member 41. The stylus 25 is deflected away from the first shoulder 42 by a paper 11 against which it presses. The first shoulder 42 may form a guide lip 45 for the stylus. The stylus 25 may be gripped by a screw-tightened washer 47 between the second and third shoulders 43, 44 or the washer may press a lip 49 of the third shoulder 44 against the stylus. One or more of the stylus holders may be used in a depth recorder of the echosounding type. The stylus holders 15 are secured to a ring 14, Fig. 1, rotating between idlers 16, the stylii recording electrochemically on a moving chart 11.