baber/WOPTO huggingface dataset:
Patent GB-1410955-A (GB)
Title: Automatic focusing of a video camera tube
IPC: H04N3/26
Filed: 1972-11-27
Abstract: 1410955 Automatic control of focus STUDIOTECHNIK BERLIN VEB 27 Nov 1972 54734/72 Heading G3R [Also in Division H4]  Automatic focusing of the beam of a television pick-up tube of the type having a charge storage electrode is effected under the control of a signal derived from the difference between the video signal levels produced by scanning the two successive lines immediately following a blanked line. Because the first line which is scanned follows an unscanned (blanked) line it will not have "lost" additional charge due to partial overlap of the (non optimum focused) beam, which would occur if the line preceding the first line had been scanned whereas, the second line which is scanned has already "lost" some charge due to beam overlap during the scanning of the first line so that the difference between the video signal levels produced by such scanning is therefore a measure of such overlap i.e. the degree of defocus and in the present invention the control signal operates on the tube means to reduce this difference to a minimum. In the described embodiment Fig. 5 the various waveforms occurring on the numbered conductors of which are indicated by similar numbers in Fig. 6, a pulse generator 25 supplies pulses 27 which blank the first and fourth line scans in the first and second fields and during the two unblanked line scans (lines two and three) opposite polarity pulses from generator 25 defocus the tube beam in "equal and opposite directions" by + #F k  (1st field) and by - #F k  (2nd field). Generator 25 also supplies pulses 29 during the second line of the first field and during the third line of the second field and further supplies pulses 30 during the third line of the first field and during the second line of the second field. Pulses 29 and 30 open respective gates 19 and 20 which pass the video output signals 31 derived via a pre-amplifier 17 and clamping amplifier 18, as respective outputs 32, 33 to the non-inverting and the inverting inputs respectively of a differential amplifier 21 the output 34 of which is supplied to an integrator 22. The latter produces an output 35 which is supplied via a low-pass filter 23 as a control signal waveform 36 to control the focusing current regulator 24 connected to the focusing coils 26. Alternatively or additionally, electrostatic focusing may be employed.
Patent GB-1492040-A (GB)
Title: Hydrophilic structures of water insoluble polymers
IPC: C08J7/056
Filed: 1974-12-20
Abstract: 1492040 Articles comprising cellulosic particles HOECHST AG 20 Dec 1974 [24 Dec 1973] 55196/74 Heading C3F [Also in Division B5] Cellulose ethers, inherently water-soluble but rendered at least partly water-insoluble, but still water-absorbent by cross-linking or other chemical modification, are uniformly distributed in, or over a surface of, a shaped article composed of a film- or fibre-forming polymer which is insoluble in water. The cellulose ether may be carboxymethyl-, hydroxyethyl-, or methylhydroxyethyl-cellulose and is preferably in the form of particles of a size within the range of from 0À01 to 2 mm. Several modifying agents are used, epichlorohydrin most commonly. The shaped articles in the examples are films of hydrated cellulose (from viscose), cellulose acetate and hydroxyethyl cellulose and fibres of polyethylene.
Patent GB-1447676-A (GB)
Title: Vacuum circuit interrupter
IPC: H01H33/662
Filed: 1973-11-29
Abstract: 1447676 Vacuum switches ALLIS-CHALMERS CORP 29 Nov 1973 [5 Dec 1972] 55341/73 Heading H1N A sealed vacuum circuit interrupter having a heat sink and heat conducting dispersal shields comprises a conventional arrangement of contact carrying rods 29, 37 and bellows 40 with respect to metal end caps 26, 27 but the tubular envelope includes a relatively massive metal heat sink 12 located between two insulaters 14, 16 and a pair of opposed bell-shaped thin metal shields 55, 70 are insulatingly supported from the contact rods and from ground and are disposed in surrounding relationship to the rods 29, 37 so that the bell mouths are spaced apart approximately equivalent to the contacts open gap and so that their peripheries 56, 72 are adjacent the heat sink 12. Metallic collar shields 58, 71 attached to the end caps overlap the bell ends 57, 73 to protect the insulators 14, 16 and further shields 45, 65 and baffles 50, 68 protect the respective contact-carrying rods and bellows from arc products and serve as condensing surfaces. All the internal shields act as heat conductors either to the principal heat sink 12 or to the end caps 26, 27 serving as auxiliary heat sinks. In a modified arrangement (Fig. 2, not shown) the baffles for the contact rods are dispensed with and a fixed shield (87) and a bellows shield (81) are directly and conductively attached to the corresponding current carrying rods to improve the heat transfer.
Patent GB-1443908-A (GB)
Title: Recovery of gallium oxide from solutions
IPC: C01G15/00
Filed: 1974-12-23
Abstract: 1443908 Recovery of Ga 2 O 3  ALUMINUM CO OF AMERICA 23 Dec 1974 55564/74 Heading C1A The recovery of Ga 2 O 3  is described from alkali aluminate solutions containing dissolved Ga by first co-precipitating Al 2 O 3  and part of the Ga 2 O 3  by introducing an acid into the solution and then circulating the co-precipitated Al 2 O 3  and Ga 2 O 3  through the solution for at least 15 hours whereby additional Ga 2 O 3  is precipitated from the solution. The acid is preferably formed in situ by passing CO 2  through the solution; the starting solution may be sodium aluminate.
Patent GB-561460-A (GB)
Abstract: 561,460. Heat radiating stoves. CAMPBELL, P. C. Aug. 17, 1942, Nos. 11534 and 18177. [Class 126] A heat radiating stove comprises a number of oblate spheroidal or similarly flattened chambers a, b, c, Fig. 1, arranged one above another and interconnected by spring interlocking spigot-and-socket joints d, e presenting restricted passages f through which hot gases from the lowermost chamber may pass to the chambers above in succession, the lowermost chamber being supported by a base ring n, having air inlets o, above a source of heat (not shown). The spigots d are formed by split tubes tapered at g. They are secured to the lower portions of the chambers and are provided with grooves h to receive projecting beads on the sockets e secured to the upper parts of the chambers. The chambers are formed in two parts jointed peripherally at k. The top chamber c has an outlet p surrounded by an annular chamber q which may support a kettle or other vessel to be heated. Curved baffles such as r, s may be arranged in the spigots f and in the lower parts of the chambers. The spaces between the chambers may be provided with baffles u of annular form and they may be solid or hollow and made in halves, as shown, and provided with tubes w, x for circulating air through them from the chambers b. A cowling having a vent at the top may be arranged over as many chambers as desired to concentrate the heat. Fig. 2 shows a modification wherein a tubular vaporizer for liquids such as medicaments is arranged centrally within the radiator and comprises an inner tube 16 supplied with liquid from the upper chamber c through pipes 18, the tube being closed at the top by a cap 17 and open at the bottom to communicate with the lower end of an outer corrugated tube 14 which fits the tubular spigots.. Vapour escapes from the upper end of the space between the tubes 14, 16 through a nozzle 22. Heated air passes from the lower chamber a through the spigots outside the corrugated tube and escapes through openings 26.
Patent GB-1333485-A (GB)
Title: Hydromechanical transmission
IPC: F16H47/04
Filed: 1971-12-07
Abstract: 1333485 Hydromechanical variable ratio gear SUNDSTRAND CORP 7 Dec 1971 [23 Feb 1971] 56697/71 Heading F2D The input shaft 12 of a hydromechanical transmission is connected via gears 13 and 14 and a hydrostatic transmission 16 comprising variable displacement axial piston pump 20<SP>1</SP>, and fixed displacement axial piston motor 34, with the sun wheel 18 of a differential gear 19, and is also connectible via clutch 43 and gears 47 and 50 with the ring gear 52 of the differential 19, the output of the transmission being from the carrier 59 for the planet gears 60. The differential may be locked by operation of a clutch 58, which, with clutch 43 disengaged, allows a purely hydrostatic drive to obtain. With clutch 58 disengaged and clutch 43 engaged the differential gearing is such that the gear ratio for the transmission is lowered over that which obtains with the purely hydrostatic transmission. A control for the hydraulically actuated clutches and for the hydraulic adjuster 30 for the swashplate 26 is shown in Fig. 2. The wobbler position valve 91 controls the swashplate, movement of the spool in either direction by the linkage shown causing fluid under pressure to be applied to either side of piston and cylinder 30. The link 106 is attached to the swashplate and supplies the feedback to cause the spool 92 to return to its neutral position by a follow-up action. The clutch valve 128 which supplies pressure fluid to the clutches to select the range is operated by a vertical movement of a handle 122 (as opposed to the pivoting movement which adjusts the swashplate). In the device of Fig. 2 pins 181 and 185 on parts, 164, 163 of the lever 122 held apart by a spring 168 co-operate with recesses 188 and 189 corresponding to neutral in each range to prevent shift of range (by operation of the clutches) except when in neutral. The clutch valve 128 has a neutral position in which neither clutch is engaged which is maintained when moving the lever 122 between the two neutrals in changing the range. A further range shift point (191) exists which corresponds to a position in which both ranges provide the same output speed. An alternative linkage (Fig. 5, not shown) in which the handle moves transversely between two parallel slots to change the range is also described.
Patent GB-1380907-A (GB)
Title: Phosphorus-containing derivatives of polyfluorinated alcohols and processes for obtaining the same
IPC: C11D1/00
Filed: 1971-12-09
Abstract: 1380907 Phosphorylated derivatives of polyfluorinated alcohols UGINE KUHLMANN 9 Dec 1971 [9 Dec 1970] 57318/71 Heading C2P The invention comprises a product having the general formula and the two isomeric forms of the formulµ in which C n F 2n+1  is a perfluorinated carbon chain, n is an integer between 2 and 18 (both inclusive) and X, Y and Z are the same or different and are halogen, OH, OMe (where Me is a metal equivalent) or an alkoxy, chloroalkoxy, aryloxy, a hydroxy polyalkyleneoxy group, optionally containing a chlorine atom, or the radical -N.ZZ<SP>1</SP>, Z and Z<SP>1</SP> being the same or different and being either H or an alkyl, cycloalkyl or aryl radical or Z and Z<SP>1</SP> are radicals which together with the N atom form a heterocyclic ring which may optionally contain oxygen as an additional hetero atom. They may be obtained by first preparing the corresponding dichlorophosphate product by either (a) reacting C n F 2n+1 -CH=CH 2  with PCl 3  and oxygen or an oxygen-containing gas, the molar ratio of PCl 3  to the olefin being preferably from 1 to 5, (b) by reacting a fluorinated epoxide of the formula with an excess of POCl 3  in the presence of a catalyst such as TiCl 4 , ZrCl 4 , stannic chloride or aluminium chloride, or (c) by treating a chlorohydrin: with an excess of POCl 3 , optionally in the presence of a tertiary amine. The dichlorophosphate products may then be reacted with water to form the free acids (X=Y=OH); with an alcohol or phenol, optionally in the presence of a tertiary amine; with an alkali metal alcoholate or phenate to form the corresponding esters, or with at least 4 molecular equivalents of a dialkylamine to form the corresponding phosphorodiamidate. The products are useful as emulsifiers, wetting agents or lathering agents, as levelling and anti-stain agents in polishes or emulsion paints, as corrosion inhibitors, evaporation retarders for solvents, and as waterrepellant and oil-repellant agents.
Patent GB-1244419-A (GB)
Title: Stem assembly for a motor vehicle seat belt assembly
Inventor: BARRELL RICHARD JOHN
IPC: B60R22/22
Filed: 1969-11-26
Abstract: 1,244,419. Seat belt stem. FORD MOTOR CO. Ltd. 26 Nov., 1969, No. 57762/69. Heading A3V. A stem assembly for connecting a seat belt buckle to an anchorage point comprises a length of webbing twisted in a helical coil, the coil being stiffened by an outer layer and/or an inner stiffening member such that it is semi-flexible i.e. retains the shape into which it is deformed. The stem 12 comprises a length of webbing 14 threaded through aperture 15 in buckle anchor plate 13, the two portions 16, 17 thus defined being placed in facial contact and twisted into a helical coil. The free ends 18, 19 are passed through anchorage aperture 20, folded back and stitched to the webbing so that loads applied to the buckle are taken by two thicknesses allowing a reduction in webbing width and facilitating twisting of the coil. The two portions 16, 17 may be twisted in opposite senses to reduce any tendency of the webbing to unwind. An outer sheath 21 is overlaid on the stem as another twisted strip 22, e.g. of plastics material, twisted in either sense to the coil and with a finer pitch, the strip being stitched to the webbing and preferably overlaid with more strips to stiffen the stem. In addition or alternatively, if the webbing coils are stitched together, the steam may be stiffened by wires of low grade steel or aluminium within the space enclosed by the coils.
Patent GB-1326148-A (GB)
Title: Assembly of piston-sealing strips in rotary-piston machines
IPC: F01C19/10
Filed: 1971-12-14
Abstract: 1326148 Rotary piston machines DAIMLERBENZ AG 14 Dec 1971 [16 Dec 1970] 58016/71 Heading F1F A composite sealing strip 5, 6 having a biasing spring 7 is secured together by spots 8, 9 of heat-destructable adhesive before location in an axially extending groove 4 in a rotary piston 1, the strip having a length L greater than the width B of the housing periphery 2 so that the strip is compressed by the side walls 3 to break the adhesive bonding during assembly of the housing. Any adhesive remaining, or at least its bonding effect is destroyed by heating during operation of the machine. The spot 8 of adhesive may be located centrally of the strip, or may be offset therefrom. The machine may be a Wankel-type I.C. engine.
Patent GB-1117830-A (GB)
Title: Apparatus and method of controlling the movement of a driven part
IPC: G05B19/23
Filed: 1966-12-29
Abstract: 1,117,830. Control of D.C. motors. AMP Inc. 29 Dec., 1966 [5 Jan., 1966], No. 58038/66. Heading H2J. [Also in Division G3] In a positioning system, a part is driven by an electric motor at progressively reduced speeds over successive portions of its travel, the speed being reduced by reverse current braking initiated at a predetermined distance from the end of each portion and continued until the speed drops to that desired for the next portion, as determined by a reference value. The actual position of the part is represented as a number in a position register 14 connected to an electrooptical pulse generator 16 coupled to the part 13. Movement in one direction adds to the count and in the other direction reduces it. A similar register 10 connected to a tape reader 12 provides a command count and the magnitude and sense of any difference is detected by a comparator 18. A counter 19 tracks this count difference and according to whether the position count is higher or lower than the command count an output pulse appears initially on F1 or R1 for forward or reverse movement respectively. As the count proceeds down to zero pulses appear on F2 and F3 (or R2, R3) in turn at predetermined numbers. These trigger gates G1 ... G6 controlling preset resistors rl ... r6 which determine the magnitude and polarity of a speed control voltage which is algebraically added to a tachogenerator voltage 22. The resultant causes thyristor gate G7 or G8 (according to polarity) to conduct in proportion to its magnitude and so energize motor 28 in the appropriate direction with current derived from a transformer T3 and rectified by diode D3 or D4. During the first portion of movement (signalled on F4 or R1) a switch S1 disconnects the tachogenerator so that speed is a maximum. A triggering circuit is described (Fig. 8, not shown) in which the speed error voltage is applied to a differential amplifier (Q1, Q2) controlling the rate of charge of one or the other of two capacitors (C4, C5) connected to unijunction transistors (Q4, Q6) which, when rendered conducting, apply phase angle controlled triggering pulses via transformers (T1, T2) to thyristors (Q8, Q9 or Q10, Q1l) arranged so that both half cycles of the A.C. supply are used in each direction of rotation. The invention may be applied to a machine for automatically wiring between terminal posts, two such systems being used for X and Y coordinates respectively.
Patent GB-1382157-A (GB)
Title: Rock drilling equipment
IPC: E21B19/086
Filed: 1972-12-15
Abstract: 1382157 Rock drills TITAN MFG CO PTY Ltd 15 Dec 1972 58103/72 Heading B3C A rock drill comprises a telescopic leg 14, 15, 16, an hydraulic motor 22 for rotating the drill rod 18, a first valve 10 for supplying pressure fluid to the leg, a second valve 11 for supplying fluid to motor 22, and means for controlling the valves. Valve 11 is operated by a Bowden cable 26 and a lever 27, and valve 10 is operated by a twist grip 20. Water for dust suppression and swarf removal is piped to a unit 24, and thence through a passage in drill rod 18 to drill tip 19.
Patent GB-1420097-A (GB)
Title: Signal magnitude comparator apparatus and method
IPC: G01R19/10
Filed: 1972-12-15
Abstract: 1420097 Detecting the largest or smallest of a plurality of signals ALNOR INSTRUMENT CO 15 Dec 1972 [17 Dec 1971] 58132/72 Heading H3T The largest or smallest of a plurality of signals is detected by producing a signal successively representing the amplitude of the signals, combining the representing signals with a ramp and indicating one of the signals when the combined signal reaches a threshold value. The circuit described indicates whether a temperature representative voltage exceeds a reference value and automatically resets the ramp when the combined signal reaches the threshold. The reference signal produces a voltage across a resistor 42<SP>1</SP> and, when transistor 36 is rendered conducting the voltage across this resistor is increased or decreased by the temperature representing voltage 10, depending upon whether it is larger or smaller than the reference voltage, the two voltages 12 and 10 being in such a sense that the voltage across the resistor 42<SP>1</SP> decreases with the increase in values of 12 and 10. The voltage across resistor 42<SP>1</SP> which thus alternately represents the reference voltage and the average of the reference and temperature voltages is applied to a transistor 18 forming part of a comparator 18, 54. The input of the right hand side of this comparator is a slowly decreasing ramp voltage generated by charging a capacitor 56 through a resistor 60. When the larger one of the alternating values exceeds the ramp voltage the current through transistor 18 increases sufficiently to switch a tunnel diode 16 to its high voltage state and thus switch on a transistor 64. This causes the capacitor 56 to be recharged and a new ramp to begin. It also provides a pulse of current through capacitor 66 towards the gate of a thyristor 46. The gate circuit is controlled by the phase shift oscillator 34 in opposite phase to the opening of the gating transistor 36 so that if a switching of the tunnel diode is effected while only the reference voltage 12 is connected to the summing resistor, i.e. when the temperature representative voltage is the larger, the diode 48 is non-conducting and the current pulse from capacitor 66 switches on the thyristor. It is stated that the circuit could be modified to indicate which of the signals is the larger by replacing the thyristor with a bi-stable circuit having the diode 48 connected to its " set " input and the transistor 64 gated with the first phase line 38 and connected to the clear input. The tunnel diode could also be replaced by a gas discharge tube.
Patent GB-1404209-A (GB)
Title: Process for the extraction of metal containing ions from aqueous solutions
IPC: C22B3/26
Filed: 1972-12-19
Abstract: 1404209 Extracting metal from solutions ICI AUSTRALIA Ltd 19 Dec 1972 [20 Dec 1971] 58490/72 Heading C1A Copper, iron, nickel, cobalt, uranium or mercury are extracted from aqueous solution in the form of complex anions, particularly chloride or thiocyanate complexes, by contacting the solution with a polyether which is a polyoxyalkylene derivative of ethylene oxide, 1,2-propylene oxide, 1,2- or 2,3-butylene oxide or mixtures thereof, and separating the metal loaded polyether from the solution. Preferably the polyether is a condensate of a C 1-24  aliphatic alcohol, an alkylphenol or a fatty acid with ethylene oxide, 1,2-propylene oxide, 1,2- or 2,3-butylene oxide or a cyanoethylated derivative thereof. The polyether is preferably soluble in the aqueous solution at a first temperature, at which it is contacted with the solution and insoluble at a second higher temperature to which it is heated to separate the aqueous and polyether phases.
Patent GB-588485-A (GB)
Abstract: 588,485. Magnetic and inductive tests. BATY, J. Feb. 21, 1945, No. 4405. [Class 37] In apparatus for determining the workability of steel bars &c., 14, in which the bars are passed through a field-winding 11 excited by alternating current and - the changes in current induced in a winding 20 due to variations in the magnetic properties of the bars are observed on a meter 22, a barretter 17 and lamp 18 are provided to keep the exciting current constant in spite of inductance changes in the field coil. The meter 22 and and associated rectifier 21 are together of low resistance compared with coil 20.
Patent GB-1440637-A (GB)
Title: Electric machine stators
IPC: H02K3/26
Filed: 1973-12-19
Abstract: 1440637 Printed circuit windings MOSKOV INST RADIOTEKHN ELEKTRON I AVTOMATIKI 19 Dec 1973 58939/73 Heading H2A The stator of an electric machine comprises a number of modules of ferromagnetic material carrying printed conductors, assembled together to form the active zone of the stator. In a planar air-gap machine, the modules 3 are segment-shaped ferrite pieces 2 adhesively bonded to a ferromagnetic carrier 1. The modules 3 carry printed conductors 4 and are separated by small air gaps. The conductors 4 are carried on the side-walls of the modules and pass through the segments as through-plated holes (11, Fig. 2, not shown). They are interconnected in the required fashion via printed connections 7 on the end face of the carrier 1 to form the stator winding. A similar form of construction provides a stator with axial conductors (Fig. 3, not shown) or a linear stator (Fig. 4, not shown). In a further planar air-gap machine (Figs. 7, 8, not shown) wherein each module comprises ferrite teeth arranged around a circle, the printed conductors fill spaces between the teeth to form a disc. The discs are stacked to form the stator, the winding being completed by welded connections between the discs.