baber/WOPTO huggingface dataset:
Patent GB-1473239-A (GB)
Title: Electrical conductors
IPC: H01B11/14
Filed: 1974-06-11
Abstract: 1473239 Electric conductor B J JOSSE 11 June 1974 [12 June 1973] 25946/74 Heading H1A A multistrand electrical conductor wherein each strand 2 is provided with a continuous surface layer 3 of material whose magnetic permeability and electrical resistivity are both significantly higher than the corresponding properties of the strand, at least in a determined temperature range, and wherein each strand 3 is further provided with an outer electrically insulating sheath 4. Preferably the thickness of the surface layer 3 is between one third and one hundredth of the radius of the strand, and the thickness of the sheath is between one tenth and one third of the radius of the strand. Each strand may be provided with a further layer of material having similar magnetic permeability and electrical resistivity to those of the surface layer and separated from it by electrically insulating material. The layers may be of a ferromagnetic metal, a ferromagnetic alloy, or a powder of ferromagnetic material, such as mixed ferromagnetic oxides, agglomerated by an electrically insulating binder which causes the layer to adhere to the strand. The strand may preferably be of copper or beryllium. The invention of the construction is to reduce skin effects in conductors to a level lower than that of Litz wires and over to a higher frequency. The invention is stated to be particularly applicable to conductors in a cooled state, e.g. 80‹ K, or in a superconductive state. The strands 1 may be twisted to form a ply, Fig. 2, and these in turn helically wound round a solid insulating core, Fig. 3, or a tubular core, Fig. 4, to form secondary plies. The secondary plies may be in turn wound round a tubular insulating core (Figs. 5, 6, not shown). Two coaxial tubular insulating cores may each have a single layer of the basic ply wrapped round them to form a coaxial cable (Fig. 7, not shown).
Patent GB-1341925-A (GB)
Title: Continuous doughnut making apparatus
IPC: A21C11/16
Filed: 1971-06-17
Abstract: 1341925 Extruding dough rings DUNKIN DONUTS Inc 17 June 1971 [28 July 1970] 25948/73 Divided out of 1341924 Heading B5A The disclosure is identical with that of the parent Specification 1,341,924, but the claims differ.
Patent GB-424896-A (GB)
Title: Improvements in or relating to shirts for gentlemen's wear
IPC: A41B9/08
Filed: 1933-09-20
Abstract: 424,896. Shirts and combination garments. BLOND, N., c /o Blond Bros., North Street, Cheetham, Manchester. Sept. 20, 1933, No. 25949. [Class 141] A shirt a, Fig. 1, is combined with trunk drawers e, the combined garment which opens down the front having an elastic band b and front and rear vents. The shirt and drawers parts may be connected to the elastic band b by respective stitching c and d, Fig. 3. An edging tape g at the opening may be carried down to the fork. Specification 10711/89, [Class 141], is referred to.
Patent GB-297799-A (GB)
Title: Improvements in internal combustion engines of the sleeve valve type
IPC: F01L5/10
Filed: 1928-09-11
Abstract: 297,799. British Continental Motors, Ltd., (Assignees of Niven, A. M.). Sept. 28, 1927, [Convention date]. Force-feed lubricating.-In an internal-combustion engine in which the sleeve valve works in an annular pocket formed between the cylinder and cylinder head, the pocket is connected to the suction side of the oil pump, or to a suction trap, or to the crank case, for the withdrawal of oil from the pocket. Fig. 2 shows a sleeve valve 14 working in a pocket 12 connected by passages 21, 20 to a manifold 19, from which a pipe 22a leads to a suction trap 27. This trap is connected to the induction pipe 29, and has a discharge pipe 31 through which oil returns to the crank case, a valve 32 opening when a sufficient quantity of oil drawn from the pockets becomes collected above it. In another form, the manifold 19 is connected to the suction side of the lubricating-pump. In Fig. 3, the manifold 19 is shown connected to a pipe 36 draining into the crank case, and the discharge side of the lubricating-pump 23a is connected by a pipe 40 to a second manifold 37, through which oil is supplied to the opposite side of the valve pockets. Oil between the cylinder and sleeve is also withdrawn from grooves 42 formed beneath the cylinder ports and connected by a pipe 46 to the pump 23<a>. The normal intake for the pump 23<a> is at 25a.
Patent GB-823088-A (GB)
Title: Improvements relating to capstan or turret lathes
IPC: B23B3/16
Filed: 1956-08-25
Abstract: 823,088. Lathe-details. MERCER, A. C. Nov. 25, 1957 [Aug. 25, 1956], No. 26062/56. Class 83 (3). A device for a capstan or turret lathe comprises a spring-loaded piston to actuate the turret-slide power-feed lever at a predetermined point in the traverse. An air-operated spring-loaded piston and cylinder device 1 is secured to the lathe adjacent the hand-lever 3, for engaging the power traverse, and is connected therewith by a link 2. Air-pressure is supplied to the device 1 through a line 8 and valve 4 carried by a bracket secured to the lathe. A one-way trip-lever adapted to operate the valve lies in the path of one of a number of adjustable stop-rods 6 secured in a drum 9 supported on the turret-slide and rotatable with the turret. Rack stop-rod corresponds to a particular tool-face of the turret 13, so that the power-traverse is engaged automatically at a predetermined point as the capstan-slide 7 is fed towards the work by the hand wheel 15.
Patent GB-985394-A (GB)
Title: Preparation of nitrosyl pyrosulphate and purification of sulphur thioxide-containing gases
IPC: C01B17/69
Filed: 1961-07-19
Abstract: In a process for the production of nitrosyl pyrosulphate, nitric oxide and higher oxides of nitrogen are removed from a mixture of gaseous sulphur dioxide and sulphur trioxide having a temperature of at least 360 DEG  C. by cooling the gaseous mixture to a temperature at which solid particles of finely dispersed nitrosyl pyrosulphate are formed and then recovering the nitrosyl pyrosulphate from the cooled gas mixture.  The gas mixture is preferably cooled to 15 DEG to 50 DEG  C.  The product may be recovered by electrostatic precipitation or filtration through a compressed bed of inorganic fibres e.g. slag wool, asbestos or glass fibres, having diameters of 5 to 30 microns and a compressed bed density of 5 to 20 lb. per cubic foot.  The product is drawn off from the filter bed in solution of 65 to 400 parts by weight of sulphuric acid or oleum and 4 to 12 parts by weight of nitrosyl pyrosulphate.  The initial gas mixture which may be obtained from the Contact-process preferably contains a major proportion of sulphur trioxide and the gas supply to the Contact process may be obtained by burning spent alkylation acids containing nitrogenous materials.  Specification 722,259 is referred to.
Patent GB-682395-A (GB)
Title: A loom warp beam weighting motion
IPC: D03D49/08
Filed: 1949-10-12
Abstract: 682,395. Warp let-off motions for looms. DUXBURY, W., and DUXBURY, W. H. Oct. 11, 1950 [Oct. 12, 1949], No. 26157. Class 142(ii) A let-off motion comprises a lever A, pivoted at B to a bracket on the back rail of the loom, a hook F to which the chain round the ruffle of the warp beam is attached, a hand-wheel F<SP>1</SP> for adjusting the tension on the chain, and springs J interposed between the end of the lever remote from the pivot and a bracket K on the end-frame of the loom. The hook F passes through a slot in the lever A and a washer F<SP>2</SP> engages one of a number of grooves on the underside of the lever. A link L pivoted to the lever A passes through a slot in the bracket K, and a cotter M may be placed in one of a number of staggered slots in the link to maintain the lever in its correct position when the hand-wheel is slackenedoff to turn back the warp beam. The springs J are positioned on nipples A<SP>2</SP> and may be of different lengths or strengths, or both. Specification 600,866 is referred to.
Patent GB-650738-A (GB)
Title: Improvements in and relating to regulating systems for dynamo electric machines
IPC: H02P9/36
Filed: 1947-09-26
Abstract: 650,738. Automatic voltage control apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 26, 1947, No. 26168. Convention date, Sept. 28, 1946. -[Class 38 (iv)] The excitation of a synchronous machine is regulated within predetermined upper and lower limits by means of an amplidyne generator having one control winding responsive to the positive phase sequence voltage of the machine and a second control winding responsive to the difference between field excitation voltage and a limiting reference voltage. The alternator 1 is excited by a generator 5 itself excited (assuming that contacts 9, 10 are closed and contact 11 open) by an amplidyne generator 7 which is driven by an induction motor 15 from an independent source, or alternatively driven by the main machine. The output voltage of the alternator is applied by potential transformers 18 to a positive-phase sequence network 19 of the type disclosed in Specification 629,227. A current transformer 24 and potentiometer 25 add to the output voltage of network 19 compounding voltage proportional to alternator load and the resultant voltage is applied both to a non-linear circuit comprising a resistor 28, capacitor 29 and an adjustable saturable reactor 30; and to a linear circuit comprising transformer 33 and resistor 34. The outputs of the two circuits are rectified, compared, and the resultant applied as the control voltage to the control winding 17 of the amplidyne generator 7. A transformer 41 provides negative feed-back between the alternator field and the control winding to reduce hunting. The excitation of the field of the alternator is maintained between upper and lower limits to prevent either over-heating or loss of synchronism, by means of a further control winding 42 on the amplidyne generator. This winding is connected in series with a circuit in which the voltage across the alternator field is compared with reference voltages derived fom potentiometers 47, 48 across rectifier 46 and transformer 45. If the field voltage rises above the voltage at 51, rectifier 53 conducts and (assuming that switches 54, 57 are closed) winding 42 is energized to oppose winding 17 and reduce the field excitation. Similarly, if the field voltage falls below the voltage at 50, rectifier 52 conducts and winding 42 boosts the field excitation. The switch 54 completes the upper limit circuit in response to excessive temperature in the alternator windings, or alternatively, after a definite delay from the time that the field voltage reaches the allowed maximum. A pair of rectifiers 43, 44 connected oppositely across the winding 42 prevent excessive peak currents. A ganged switch 13, 57 changes from automatic to manual control (the portion shown) by releasing solenoid 8 to open contacts 9, 10 and close contacts 11; and also opening the limiter circuit. Ganged switches A, B enable the polarity of the exciter to be reversed.
Patent GB-358671-A (GB)
Title: Improvements in internal combustion engines of the solid fuel-injection type
IPC: F02M39/00
Filed: 1930-09-02
Abstract: 358,671. Supplying liquid fuel; casings. HESSELMAN, K. J. E., Storõngen, Saltsj÷, near Stockholm. Sept. 2, 1930, No. 26234. Convention date, Oct. 24, 1929. [Classes 7 (ii) and 7 (iii).] To prevent leakage of liquid fuel into the crank case, the supply pump 11 is isolated from its actuating shaft, which also controls the cylinder inlet and exhaust valves, by a partition 18a, 18b. The pump is mounted in an inclined position on the cylinder and is enclosed by a cover 20, its actuating shaft 5 being housed in the crank chamber. If preferred, the pump mav be mounted vertically.
Patent GB-1189115-A (GB)
Title: Boring Head Attachments for Machine Tools for producing Undercut Formations in Workpieces
Inventor: STRANGWARD KENNETH SYDNEY
IPC: B23B29/034
Filed: 1966-06-13
Abstract: 1,189,115. Boring heads. JOSEPH LUCAS (INDUSTRIES) Ltd. 26 July, 1967 [13 June, 1966], No. 26243/66. Heading B3C. A boring head for producing undercuts in bores comprises a casing 10, Figs. 1 and 3, a guide way 11 secured to the casing, a rod 21 fixed to the casing by screws 24, 25, and a tool holder 32 slidable in the guide way and on the rod. The guide way includes an adjustable gib 12, and a stop 39 is adjustable by a screw 38, so as to limit the radial movement of the tool holder. A hollow rod 20 is secured to a cover 14 of the casing by a screw 19, and has passages which supply hydraulic fluid to either end 32a, 32b of tool holder 32, through passages 30, 31 in the rod. Tool holder 32 has three openings 36 for tools which are secured by cotter pins 37. Fluid is supplied to rod 20 by a valve, and a rotary union, so that the radial movement of the tool holder is in timed relationship with the remainder of the machine cycle.
Patent GB-798532-A (GB)
Title: Improvements relating to arrangements for regulating the idling air supplied to internal combustion engines
IPC: F02M1/10
Filed: 1956-08-28
Abstract: 798,532. Regulating. DAIMLER-BENZ AKT.-GES. Aug. 28, 1956 [Aug. 29, 1955], No. 26299/56. Class 7(6) A thermostat 8 displaces a throttling member 7 in an idling air passage 5 of an injection type engine in the opening direction upon increase in temperature of the combustion air and also simultaneously effects a reduction in the quantity of fuel. Two idling-air passages 4, 5 are provided in parallel, the passage 4 being controlled by a manually adjustable screw 6 and having positioned therein the thermostat 8 which actuates valve 7 to close the passage 5 at low temperatures and open it at high temperatures, thereby maintaining the weight of idling air constant. The fuel supply is controlled by a suction governor connected, by a suction pipe 12, to a main tapping point 10 downstream of the throttle valve 3 and a correcting tapping point 11 upstream of the valve 3 connected to the point 11 by a passage 15. A by-pass 16 to the passage 15 is controlled by an extension of the valve 7 and is closed when the valve 7 opens the idling duct 5, thereby increasing the suction in pipe 12 and producing a slight reduction in the fuel supply. A second by-pass 13 interconnecting the points 11, 10, is opened as the throttle valve 3 is opened.
Patent GB-460458-A (GB)
Title: Improvements in multi-stage rotary pumping units
IPC: F04B23/12
Filed: 1935-09-24
Abstract: 460,458. Rotary and centrifugal pumps. DRYSDALE & CO., Ltd., and DRYSDALE, J. W. W. Sept. 24, 1935, No. 26422. [Classes 110 (i) and 110 (ii)] A pump having meshing gears 4, 4<a> is provided with fluid discharged by a centrifugal pump 3 having its impeller on the driving shaft 5 of the gear-pump.
Patent GB-598161-A (GB)
Title: Improvements in and relating to the control of electrical rectifiers
IPC: H02H7/127
Filed: 1945-10-10
Abstract: 598,161. Rectifying. GENERAL ELECTRIC CO., Ltd., and DALE, S. H. Oct. 10, 1945, No. 26476. [Class 38 (ii)] In a polyphase rectifier system protected against overload, the voltage developed across an impedance by harmonic frequency currents from the secondaries of current transformers in each phase which are saturated by the overload currents, is used to apply a negative voltage to the rectifier grids. The secondaries of current transformers 20, 21, 22 in the main supply lines 15, 16, 17 are connected in series across a resistor 23 in parallel with a reactor 24. At a predetermined value of supply current, the transformer cores saturate and the third harmonic currents so produced develop across resistor 23 a voltage much greater than the negligible voltage produced by the fundamental frequency current. This voltage is applied in push-pull to the grids of vapour-filled valves 27, 28 which are at a negative potential determined by the setting of potentiometer 30 connected to the mid-point of reactor 24. Valves 27, 28 are rendered conductive, and battery 32 is thus connected across resistance 18 between the cathodes of rectifiers 10, 11, 12 and the starpoint of the transformer secondary 14 supplying the rectifier grids which thus become negative and suppress the rectifier discharge. To reset the circuit, switch 33 is closed to short-circuit valves 27, 28 and then opened when the bias is removed from the rectifier grids if the fault has cleared. Valves 27, 28 may be replaced by relays having tongues biassed by springs set to operate at a selected amplitude of the harmonic voltage. The single resistor 23 may be replaced by separate resistances across each secondary connected in series, Fig. 2 (not shown). In a further modification, switch 33 is replaced by a relay operated by the anode current of valves 27, 28 which keeps opening and closing while the fault persists. Through further contacts on the relay, a condenser is charged each time this operates ; this condenser is discharging through a resistance, but after a predetermined number of relay operations, the condenser is sufficiently charged to render conductive a vapour-discharge valve to the grid of which the condenser is connected. This valve applies a permanent negative bias to the rectifier grids which are thus locked against operation, and may trip a circuit-breaker in the supply lines 15, 16, 17. A further relay may be provided whereby negative bias is applied to the rectifier grids if the heater circuit of any of the valves are broken, or until the cathodes are at their normal operating temperatures. Condensers connected between grid and cathode of valves 27, 28 may prevent operation by switching transients or H.F. potentials radiated or fed from the rectifiers.
Patent GB-1162374-A (GB)
Title: A Circuit Arrangement for Reversing the Polarity of Electrical Wave-Form Samples
Inventor: WARREN KEITH GEORGE
IPC: H04B14/04
Filed: 1966-06-14
Abstract: 1,162,374. PCM systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 24 May, 1967 [14 June, 1966], No. 26539/66. Heading G4H. [Also in Division H3] A circuit for controlling the polarity of a signal sample before application to a P.C.M. coder has a non-inverting mode in which a current steering transistor T3 is conducting and supplies current IbŒI s , where Is is due to the signal sample V s  applied to the base of T 1 , the remaining current, making up the 2Ib drawn by resistor Rb acting as a constant current device, being drawn through load resistor Rc, diode D2 and transistor T 2  so that the voltage at t 6  corresponds in magnitude and polarity to the input V s . When T3 is off and T4 is conducting, IbŒI s  is drawn through Rc, D 1  and T 1  so that the output at t 6  is inverted. Diodes d3, d4 limit the output. In a modified circuit, Fig. 2 (not shown) T 1  and T 2  are replaced by Darling- ton pairs, Rb is replaced by a common base transistor (T5) and a further common base transistor (T6, T7) is inserted in each current path to shield its respective Darlington pair from variations in dissipation caused by the operation of T3, T4. A drift-compensation arrangement for use in a T.D.M. system is also described, Fig. 3 (not shown). Drift compensation is effected for the inverting and non-inverting modes during an otherwise vacant channel period, in alternate frames. Any output at t 6  which occurs during the drift compensation channel period is caused by drift, and is used to charge a capacitor C s2  or C s1 ) depending on the mode being compensated. Inverting mode compensation is effected by subtracting the voltage stored (on C s2 ) from the output of an addition circuit which normally effects comparison between the sample and a reference current, and non-inverting mode compensation is effected by using the voltage stored (on C s1 ) to vary the conduction of a further transistor (T8) biasing the base of (T5).
Patent GB-297227-A (GB)
Title: An improved combined trouser stretcher and coat hanger
IPC: A47G25/62
Filed: 1927-10-07
Abstract: 297,227. Bellier, L. Oct. 7,1927. Trouser stretchers; coat hangers.-In a combined trouser and coat hanger of the kind' consisting of a yoke and a stretching frame comprising a bar around which the trousers are folded and a clamp in which their ends are gripped, the clamp comprises a bar 4 fixed to the uprights 1 of the frame and a movable bar 10. These bars, which are both grooved at their outer ends, are pressed together by levers 8, 8<a> pivoted to flexible members 6 which slide in guides 5 on the bar 4 to an extent limited by lugs 7. The uprights 1 are hinged at 2 for packing and are held extended by latches 3. The upper ends of the uprights are slotted to receive the reduced ends 11<a> of the yoke 11. The folding-bar 14 has trunnions 13 slidable in the slots in the uprights, and is normally pulled towards the yoke by a pair of springs (not shown). It may be held in its lowest position, for folding the trousers, by spring-pressed latches 16 formed with apertures to engage the trunnions 13. When in folded position for packing, the clamp and yoke are held together by the suspending hook 18.
Patent GB-1147096-A (GB)
Title: Amplitude limiting circuits for mechanical oscillators
IPC: H03B5/30
Filed: 1967-06-09
Abstract: 1,147,096. Electromechanical oscillators. KIENZLE UHRENFABRIKEN G.m.b.H. 9 June, 1967 [11 June, 1966], No. 26679/67. Heading H3T. An oscillator of the type wherein a permanent magnet moves between coils 2, 6 in the base and emitter circuits of a transistor 1 has a second transistor 9 shunted across part 7 of the emitter coil so that if the supply voltage exceeds a certain value the second transistor becomes conductive to short out part of the emitter coil; the electrical drive to the magnet is thus reduced to prevent a rise in amplitude of oscillation. The stabilization is improved by having the part 6 of the emitter coil included in the base circuit as shown, but this is not essential (Figs. 2, 3, not shown). For temperature compensation the two transistors should be of the same type, e.g. both germanium or both silicon. Capacitor 3 inhibits the operation of the circuit for a certain time if the voltage induced in the coil 2 should be excessive due to surges. A high resistance can be included in the base lead of transistor 9 (Fig. 2, not shown), or the base may be tapped into coil 6 (Fig. 3, not shown). The transistor 9 may shunt part 6 of the coil instead of part 7. Alternatively, part 6 of the coil may be in the collector circuit of transistor 1 (Fig. 2, not shown).
Patent GB-1137791-A (GB)
Title: Overload detection
IPC: H02H3/087
Filed: 1967-06-09
Abstract: 1,137,791. Controlled non-linear inductors. INTERNATIONAL STANDARD ELECTRIC CORP. 9 June, 1967 [10 June, 1966], 26735/67. Heading H3B. [Also in Division H2] In an overload protective arrangement control windings SW1, SW2 are wound around the ends of a ferrite rod F and connected in series with a load R. An input winding WA and an output winding WL are wound around a central limb between two holes L1, L2 in the rod F, the winding WA being fed from an A.C. or pulse source UW and the winding WL being connected to a relay S having contacts s in series with the load. Normally the relay S is energized, but should the load current become excessive, the increased magnetization of the ferrite rod by the control windings reduces the coupling between the windings WA WL so that the relay S drops out. The relay may have a mechanical latching device or may have holding contacts. The A.C. supply to the winding WA may be provided by connecting the winding WA in series with a transistor and providing additional windings functioning a feed back winding and a premagnetizing winding so as to form an oscillator, Fig. 2 (not shown).