baber/WOPTO huggingface dataset:
Patent GB-989613-A (GB)
Title: Improvements in or relating to automatic control systems
Inventor: SIMS RAYMOND BERNARD
IPC: B21B37/16
Filed: 1960-07-05
Abstract: 989, 613. Automatic control of thickness and tension. DAVY & UNITED INSTRUMENTS Ltd. June 29, 1961 [July 5,1960], No. 23450/60. Heading G3R. An automatic control system for a stand of a rolling mill enables strip thickness to be kept constant by variations of both tension and screwdown while maintaining tension otherwise constant or within set limits. As shown, a tension reference signal derived from a potentiomete 19 is continuously compared in a circuit 23 with a signal from a tension meter 25 indicating the actual tension in a strip 21 between rolls 12 and 13 of a tandem mill. If the actual tension departs from the reference tension a corrective output signal from circuit 23 is applied over an amplifier 27 to a control circuit 28 whereby the speed of the motor 29 for the rolls 13 is adjusted; the strip tension is thereby maintained constant. The thickness of the strip leaving rolls 13 is measured by a circuit 15 giving on output lines 16 and 17 signals representing the departure of the strip thickness from a desired value. The signal on line 17 modifies the reference tension signal derived from potentiometer 19, and the signal on line 16 is applied to a screwdown controller 18. If the thickness error is small, the adjustment of strip tension in response to the signal resulting from the modified reference is sufficient to remove the error before the screwdown controller becomes effective. If the error is large, the reference signal applied to circuit 23 is limited by a circuit 22 so the tension in strip 21 is brought to this limiting value with the error not completely eliminated. The screwdown controller 18 then has time to become effective and adjusts the setting of rolls 13 to reduce the thickness error to zero. The signals on lines 16, 17 then disappear and the tension in strip 21 is automatically returned to the reference value as set by potentiometer 19. The thickness is thus maintained constant by automatic control of tension and screwdown. In a modification (Fig. 2 not shown) the thickness error signal from the circuit 15 is applied to the screwdown controller only when the modified tension reference signal exceeds the limits determined by circuit 22.
Patent GB-206122-A (GB)
Title: Improvements in devices for coupling the connecting rod with the piston
IPC: F16J1/14
Filed: 1923-09-20
Abstract: 206,122. Soc. Anon des Ateliers d'Aviation L. BrÚguet. Oct. 24, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Connecting-rods. - In an internal-combustion or other engine the gudgeon-pin is replaced by pins d, formed integral with the connecting-rod a, and secured in bearings in the piston by detachable caps. Sleeves h may be interposed between the pins d and the bearings.
Patent GB-644064-A (GB)
Title: Improvements in or relating to metal-cutting machine tools employing rotary cutters
IPC: B23F19/06
Filed: 1947-08-26
Abstract: 644,064. Milling-machines ; gear-cutting. NATIONAL BROACH & MACHINE CO. Aug. 26, 1947, No. 23557. Convention date, Sept. 3, 1946. [Class 83 (iii)] In a metal-cutting machine-tool having a rotary work spindle and a rotary tool spindle 13, both mounted for angular adjustment on a frame 10 about a first axis perpendicular to themselves, traversing means interposed between one of the spindle supports and the frame is angularly adjustable relatively to both the frame and the support about a second axis parallel to the first axis. The machine is primarily adapted for gear finishing on the crossed-axes principle or for surface shaving as described in Specification 637,554, and is arranged so that the direction of traverse between the work-piece and tool can be adjusted without disturbing the orientation of the workpiece. A knee 22, which is vertically adjustable by a feed-screw 26, Fig. 4, manually rotatable by a shaft 34, has T-slots 41 providing for angular adjustment of a sub-table 40 and on top of the sub-table is a slide-way for another sub-table 44 which also has T-slots 46 providing for angular adjustment of a work-table 45. With the bolts in the slots 41 and 46 loosened, the sub-table 40 is rotated until the slide-way is at the required angle of traverse and the bolts are then tightened. During this adjustment, rotation of the work-table 45 is prevented by links 86, Figs. 3 and 4, pivoted on a part 85 of the knee 22 and connected by a plate 87 to links 88 pivoted on the work-table; the plate 87 is freely movable in a recess 90 in the underside of the table 45 and is supported by a pin 91 bearing on the bottom of the recess. The tool spindle head 12 is then adjusted about a vertical axis so that the tool spindle is at the desired crossed-axes angle with the work W, which is supported between centres on the table 45 and, in the case of gear finishing, is rotated by the tool, or, in the case of surface shaving, is rotated by a separate motor. The sub-table 44 is traversed by a lead-screw 71 which is rotated by bevel-gearing 70, 69 driven by a train of gears, including a worm 55 and wormwheel 56, from a motor mounted on the knee 22. The lead-screw has squared ends and can be rotated by a hand-tool so that, when the motor is stopped, the gear 70 rolls round the gear 69, which is locked by the worm drive, and thus the sub-tables 40 and 44 are rotated as a unit. A drive 72, 73 taken from the traversing drive controls timing means 74 which, in the case of gear finishing, reverse both the direction of work traverse and tool rotation or, in the case of surface shaving, may merely stop or reverse the work traverse.
Patent GB-938493-A (GB)
Title: Improvements in or relating to sealing strips for rotary piston engines
IPC: F01C19/04
Filed: 1961-06-29
Abstract: 938,493. Rotary engines. GOETZEWERKE FRIEDRICH GOETZE A.G. June 29, 1961 [June 30, 1960], No. 23608/61. Class 110 (2). The piston of a rotary engine is provided with seals in its apices and end faces, each seal comprising two sealing strips 6, 7 set in grooves, the running surfaces of the strips being rounded to form sharp edges. The strips may be fitted in a holder of material more wear resistant than the piston, the holder being fixed to the piston. A distance piece 8 may be provided between the strips. This distance piece may be porous to hold lubricant and may either be a part of the piston or be secured to the piston. The wearing surfaces of the assembly may be coated with a hard material such as chromium or molybdenum. The sealing strips in each apex of the piston may be urged longitudinally in opposite directions to bear against the end walls of the cylinder. .
Patent GB-1508402-A (GB)
Title: Colour television systems
IPC: H04N11/16
Filed: 1976-06-08
Abstract: 1508402 Television INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA SpA 8 June 1976 [12 June 1975] 23621/76 Heading H4F A PAL type decoder comprises a pair of demodulators 4 and 5 receiving the chrominance signal of a television transmission and one or the other of a pair of antiphased reference oscillations from a pair of controlled oscillators 7 and 8 each fed with alternate bursts of reference colour subcarrier in the transmitted signal via switches 3 and 6. The demodulator reference oscillations are switched in alternation at the line frequency switches 15 and 16 operating simultaneously with burst distributer switch 6. Each demodulator has a pair of outputs (+, -) from which signals dependent on the colour difference signals (M and V) continuously emanate (i.e. there is no line frequency switching between outputs) due to the alternating reference oscillations applied to the demodulators. These outputs are matrixed 17 to 29 with the luminance component Y to derive the colour signal outputs R, G and B. As a result of this arrangement the same outputs from demodulators 4 and 5 are obtained regardless of the relationship between the switching cycle of distributer switch 6 and the burst phase swing cycle of the received signal. The burst phase angle oscillates between values Œ30 degrees or Œ150 degrees disposed symmetrically about the stationary chrominance component U.
Patent GB-795544-A (GB)
Title: Improvements in and relating to heat exchange apparatus
Inventor: ISHERWOOD NORMAN
IPC: F28F1/12
Filed: 1955-08-17
Abstract: 795,544. Tubular heat exchange elements. ISHERWOOD & CO., Ltd., N. June 12, 1956 [Aug. 17, 1955], No. 23660/55. Class 64(3) A heat exchanger tube 10 is provided with finned elements 11 which encircle the tube and are secured thereto, each element having a plurality of tongues 13 which are substantially "pear" shaped or U-shaped with the limbs of the U converging towards one another when viewed in end elevation. In the form shown each element 11 is provided with a flange 12 to facilitate its being secured to the tube as by soldering or brazing. The tube 10 may be of circular, oval, square or of any other suitable cross sectional shape. The elements may be made of copper, brass, or stainless steel and may be produced by pressing or casting. One or more disc-like baffles may also be provided at intervals along the tube.
Patent GB-1514521-A (GB)
Title: Push button tuner actuators
IPC: H03J5/32
Filed: 1975-05-30
Abstract: 1514521 Push-button tuning actuators NIHON TECHNICAL KK 30 May 1975 [12 Nov 1974] 23664/75 Heading H3Q A push-button tuner actuator has a shift plate 20 carrying an interconnecting member 13 for moving the interconnecting member between the operative positions in order to release an operative connection between a push-button slide 4 and a selected tuning slide 6 and to operatively connect the pushbutton slide with another tuning slide 7. The interconnecting member 13 which can be moulded from synthetic resin is shown in Figs. 2 and 5 interconnecting slots 10 and 12 on the tuning slide 6 and push-button slide 4. The shift plate 20 can be moved to the right by operation of a lever (25, Fig. 1, not shown) so that the interconnecting member 13 moves to interconnect slots 10 and 11 on the push-button slide 4 and the tuning slide 7 (as in Fig. 6, not shown). The shift plate 20 is maintained in its operative position by a snap action device (30, Fig. 1, not shown) and also controls a frequency band switch (28). A stop tap 32 formed in a support plate 22 prevents the push-button slide 4 being withdrawn to enable resetting of a tuning cam 8 unless the interconnecting member 13 is in one or other of its operative positions. The slot 10 in the tuning slide 6 may have a rear inclined edge (10a. Fig. 4. not shown) to apply a vertical component of force on the tuning slide 6, 7 in order to prevent a tuning error which may be caused by a manufacturing tolerance.
Patent GB-240459-A (GB)
IPC: C09B67/28
Filed: 1925-09-22
Abstract: Readily soluble, stable dry quinone vat dye preparations are obtained by heating for a prolonged time an alkali salt of the leuco compound of the dyestuff in presence of water, free alkali, and a protective colloid such as molasses, sugar, sulphite cellulose lye, dextrin, albumen or the like, and then evaporating to dryness, preferably in vacuo.  In examples the leuco compound of the brown sulphurized vat dyestuff from dianilidodichloroquinone, or of the yellow pp-dichlordianilidoquinone (Specification 9116/11), or of the red p-chloranilidonaphoquinone is heated with caustic soda and molasses, dextrin, or other protective colloid to at least 90 DEG  C., the temperature allowed to fall, and the mass evaporated in vacuo.  A further example shows the heating of the leuco compound of the dyestuff prepared according to example 2 of Specification 22528/13 with caustic soda and molasses to 75-80 DEG  C. and subsequent drying as before.  The preparations are for use on wool.  Specifications 171,058 and 177,526 also are referred to. p-Chloranilidonaphthoquinone is obtained by condensing a -naphthoquinone with p-chloraniline in presence of boiling alcohol.
Patent GB-902623-A (GB)
Title: Preparation of suspensions of water-soluble solids in oleaginous media
IPC: C10L1/18
Filed: 1958-07-23
Abstract: Oleaginous suspensions of water-soluble solids are prepared by emulsifying an aqueous solution of the solid with an oleaginous liquid using as emulsifying agent a petroleum wax oxidate and thereafter dehydrating the emulsion.  The invention is exemplified in relation to the dispersion of sodium nitrite in lubricating oils and the subsequent incorporation of the suspension in a grease, the sodium nitrite preferably comprising 0,5-5% of the grease.  After incorporation, the mixture may be milled to provide a lubricating grease in which the sodium nitrite particle size is less than 5 microns.  The grease used was prepared from hardened castor oil (glyceryl tri-12-hydroxystearate), lithium hydroxide monohydrate, mineral lubricating oil and optionally an oxidation inhibitor, e.g. phenyl-a -naphthylamine.  In addition to lubricating oils, mineral oil residues, kerosene, castor oil, and synthetic oils, e.g. diesters (such as octyl nonyl sebacate), polyglycols, polyethers (such as a polyoxyalkylene glycol ether) and siliconcontaining synthetic oils (such as methyl phenylpolysiloxane) are specified.  The petroleum wax oxidate may be derived from paraffin wax or residual (microcrystalline) wax, methods suitable for the oxidation of which are described in Specifications 902,621 and 902,622, the oxidate preferably comprises 0,1 - 10% of the oil.  The oxidate is preferably dissolved in the oil and the aqueous solution added, and emulsification may be achieved by stirring and/or milling. Dehydration is preferably conducted at 115 - 170 DEG C. with stirring.
Patent GB-957823-A (GB)
Title: Transistorized electronic speed control and stabilising device for small type shunt motors
IPC: H02P7/29
Filed: 1962-06-20
Abstract: 957, 823. Automatic speed control systems. SPECIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. June 20, 1962 [June 23, 1961 ), No. 23676/62. Heading G3R A transistorized automatic-speed-controlsystem for small shunt motors comprises a transformer 10 with a plurality of secondary windings supplying the motor, reference voltage, control circuits &c. Secondary 23.. 25 and rectifiers 5, 6 provide the power supply to the field 200 and the armature 204 through a reversing switch 202 and regulating transistor 50. The motor armature voltage (speed signal) is compared with the reference voltage from potentiometer 206 in the base-emitter circuit of transistor 203 to vary its impedance: Transistor 203 and transistor 207 form a potentiometer to provide a variable "blocking" voltage at point A, which is applied in series with sinusoidal pulses from rectifier 3 to transistor 30, so that only that portion of the pulses which exceeds the blocking voltage can pass. Hence pulses of variable width appear at the collector of transistor 30 and are amplified by transistor 40 to control the regulating transistor 50. Choke 207 and quench diode 205 provide a sustaining current through the armature while the regulating transistor 50 is switched off.
Patent GB-292809-A (GB)
Title: An improved fertiliser
IPC: C05C3/00
Filed: 1927-09-09
Abstract: 292,809. Martin, C. W. Sept. 9, 1927. Manures.-A manure is made by mixing flue dust or sulphate of potash with lime, powdered slag, sulphate of ammonia, and agricultural salt. The slag may be in part replaced by steamed bone flour.
Patent GB-1429684-A (GB)
Title: Ion milling machine and method of operation
IPC: H01J37/304
Filed: 1973-05-18
Abstract: 1429684 Ion beam apparatus COMMONWEALTH SCIENTIFIC CORP 18 May 1973 [5 July 1972] 23791/73 Heading H1D An ion beam milling machine has means for detecting radiation (which may be the ions used for milling or other radiation) from the sample and for producing an electrical signal indicative of the thickness of the sample to check the progress of the milling operation. An automatic system Fig. 5 (not shown) can be arranged to check the thickness periodically and when the operation is complete can disable the machine, e.g. by stopping the flow of argon to the ion guns. In a two beam machine the detectors can be mounted on leaves which can each intercept one beam path when a solenoid is energized and measure ions passing through the sample from the other ion gun. Alternatively one ion gun can be turned off and used as a detector of ions from the opposite gun.
Patent GB-484548-A (GB)
Title: Improvements in incandescent electrodes for electric discharge tubes
IPC: H01J61/073
Filed: 1937-08-31
Abstract: 484,548. Thermionic cathodes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 31, 1937, No. 23823. Convention date, Sept. 3, 1936. [Class 39 (i)] An incandescent electrode more particularly for use in high-pressure, gas or vapour filled discharge tubes has its electron-emitting material composed of a vitreous material comprising one or more acid oxides whose melting point is over 2000 C. and one or more basic oxides, whose melting point is over 3000 C., the basic oxides being in excess. Silicon or aluminium oxides may be the acid oxides, and zirconium, beryllium lanthanum or thorium oxides the basic oxide. In one form 100 gms. of thorium oxide, 35 gms. of a mixture of barium and strontium carbonate, 165 cm<3>. of a 3 per cent solution of cellulose in amyl-acetate and 165 cm<3>. amyl-acetate are mixed and finely ground. To this is added 22 gms. of finely ground quartz and the mixture further ground. This paste is applied to a tungsten core and the electrode heated at about 2000 C. in a reducing atmosphere of a nitrogen-hydrogen mixture. Such an electrode is useful with a mercuryvapour filling at pressures above 5 atmospheres.
Patent GB-406366-A (GB)
Title: Improvements in carrier telegraph receiving systems
IPC: H04L27/08
Filed: 1932-08-26
Abstract: 406,366. Code telegraphy; valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and JACOBSEN, B. B., Connaught House, Aldwych, London. Aug. 26, 1932, No. 23892. [Classes 40 (iii) and 40 (v).] A detecting arrangement for a carrier telegraph receiver comprises a valve 3 arranged as a non-cumulative grid rectifier with a resistance 2 in the grid circuit and coupled to a succeeding valve 9 through a resistance 8 and condenser 6 in series. The valve 3 is preferably so biassed that grid current just ceases to flow while the valve 9 gives simultaneously anodebend and cumulative grid rectification so that the arrangement gives a substantially constant output over a wide range of input. The Figure shows a complete transmitting and receiving system fed from alternating current mains. Resistance 23 is provided to decrease the change in the load on the oscillator 17 due to keying while the shielded transformers 1, 24 give a home record of any transmission.
Patent GB-801464-A (GB)
Title: Improvements in or relating to crimping textile filaments and yarns
Inventor: RUSSELL JOHN PERCIVAL
IPC: D02G1/02
Filed: 1955-08-19
Abstract: 801,464. Straps and bands. BRITISH NYLON SPINNERS, Ltd. Nov. 19, 1956 [Aug. 19, 1955], No. 23909/55. Class 109 [Also in Group IX] An endless band, providing a convex yarn-rotating surface of a false-twisting device (see Group IX) is composed of an elastomeric material e.g. rubber of polyurethane, or comprises a surface thereof on a core composed of load-bearing filamentary material such as nylon strands.
Patent GB-826008-A (GB)
Title: Improvements in or relating to rubber processing machinery
Inventor: BARLOW RONALD
IPC: B29C48/92
Filed: 1955-08-19
Abstract: 826,008. Extrusion machines for rubber. BRITISH INSULATED CALLENDER'S CABLES Ltd. Oct. 5, 1956 [Aug. 19, 1955], No. 23959/55. Class 87(2). [Also in Group XXXV] The temperature of a rubber stock being mechanically worked is controlled by cooling the stock by a liquid medium at a temperature below its boiling point, effecting a continuous small transfer of heat from an independent source to the cooling medium, and regulating the transfer to obtain the desired temperature of the stock. In a machine for extruding rubber in which the stock is fed through a barrel 1, Fig. 1, to an extrusion die (not shown) by a screw 2 by which it is mechanically worked, a liquid cooling medium, e.g. water, is passed through groups of cooling tubes 4 within a jacket 3 surrounding the barrel 1. The stock in the barrel 1 is maintained at the desired temperature by a thermocouple 18 which controls the current supply to the element 17 of an electric heater surrounding the cooling jacket 3. A thermocouple 19, Fig. 4, maintained at the desired temperature of the stock, and the thermocouple 18 are connected to a D.C. amplifier 20 differentially so that when the thermocouples are at the same temperature there are equal currents in output coils 30, 31 which are arranged as opposed field windings of an electric motor 25. The latter is adapted to drive through reduction gearing a rheostat (not shown) connected in series with the heating element 17. As the temperature of the thermocouple 18 rises above or falls below that of the thermocouple 19 the resultant field due to the windings 30, 31 drives the motor 25 to decrease or increase the current through the rheostat. The motor 25 is oeprated intermittently the armature thereof being energized through switches 28 operated by clockwork mechanism repeatedly to remain open and closed for controlled time intervals, whereby the minimum temperature differential between the thermocouples 18, 19 required to adjust the rheostat may be varied. When it is desired to maintain different parts along the length of the barrel 1 at differing temperatures a plurality of cooling devices and surrounding heating devices may be provided.
Patent GB-242928-A (GB)
Title: Improvements in the transmission of wave energy for high frequency signalling
IPC: H04B7/15
Filed: 1924-08-27
Abstract: 242,928. Western Electric Co., Ltd., (Western Electric Co., Inc.). Aug. 27, 1924. Coupling oscillating and radiating circuits; thermionic amplifiers and generators; distortion of voice currents, neutralizing; harmonics, absorbing.-Relates to high-power telephony transmission systems in which the radiating circuit has a normal resonance-characteristic of relatively-narrow band-width, and consists in the provision of a coupling-circuit between the oscillating and radiating systems which is designed (a) to broaden the effective antenna transmission band so as to cover the speech side-band frequencies, and (b) to exclude from the antenna undesired harmonic components. The modulating and amplifying system illustrated in Fig. 1 is of the same type as that described in Specification 243,088. The coupling circuit 78 comprises a variable inductance 90, a coupling inductance 91, and capacities 92, 93. The inductance 91 is shunted by one path including a resistance 97 and series condenser 98 and by another path containing a condenser 92, both serving to bypass undesired harmonic components. The antenna circuit 95 is of known type. In Fig. 2 the curve d represents the normal resistance characteristic of an antenna capable of dealing with a range of side-band frequencies of the order of 1100 cycles. The dotted-line curve illustrates the broader transmission characteristic imparted to the antenna by determining the resistance and reactance values of the coupling circuit 78 and antenna 97, having regard to the impedance characteristic of the particular type of amplifier used, in accordance with theoretical considerations set out in detail in the Specification. Under given conditions the total impedance of the output circuit takes the form shown in Fig. 3, the lower-frequency peak b corresponding to inductive, and the peak c to capacitive reactance. The tubes thus work into an impedance which increases in value as the edges of the side-band frequencies are approached, the result being a broadening of the effective resonance curve of the antenna, as shown in Fig. 2.