baber/WOPTO huggingface dataset:
Patent GB-1160834-A (GB)
Title: Improvements relating to a.c. Bridges
Inventor: TAIT DAVID ADAMS GILMOUR
IPC: G01R17/00
Filed: 1967-08-22
Abstract: 1,160,834. Measuring bridge circuits. SOLARTRON ELECTRONIC GROUP Ltd. Aug.22, 1967, No.38594/67. Heading G1U. An A.C. bridge for measuring capacitance, inductance or resistance has two adjacent arms comprising alternating driving voltage sources whose ratio is adjustable and independent of the load imposed by the remaining arms, while the third and fourth arms comprise a standard and the unknown impedance respectively. The detector arm connected between the junctions of the first and second and third and fourth arms respectively includes a phase sensitive detector synchronized with the sources for detecting balance of the bridge, and the detector arm impedance is low, compared with either the third or fourth arms at the operating frequency. The first two arms are formed from appropriate secondary windings of a system of transformers 17, 15, 13, 11 energized from a source 23. Each transformer 15, 13, 11 is energized from a 1/10th tapping on the primary winding of the preceding one. One set of secondaries 27, 25, may be switched in appropriate combinations by switch 37 to provide a supply V/A at terminal 35 to constitute one arm of the bridge. The other secondaries 41 are switched by a relay system 43 to provide an output KV, where K is switchable in units of 0.0001, which is fed via an auto transformer and switching arrangement to provide an output at KV/B at terminal 55 to constitute another arm of the bridge. In a capacitance measuring bridge Fig. 2 the supplies <SP>-v</SP>/A and KV/B are supplied at terminals 35 and 55, while the unknown is X and the standard either S1 or S2. The bridge output is applied to an amplifier 65 designed so that its input impedance is at least eight times lower than the smallest impedance appearing in the capacitive arms. The amplifier output is passed to a quadrature detector 67 also energized from the supply 23 and the output from this is used to control the switching of the system 43, by means of a level discriminator and control unit, until a null quadrature output is obtained. The value of K thus derived at the indicator 47 enables the value of X to be determined. Power factor may be determined by adjusting the resistor 75 connected across one of the supply arms and providing an input to the amplifier until a null output is derived from the in-phase detector 69. It should be noted that adjustment for the two detectors may be carried out independently. The system is modified to measure inductance by reversing the supply arms Fig. 3 (not shown) and to measure resistance by using the in-phase detector to control the switching system 43 Fig.4 (not shown). It is shown in the Specification that by having R, the input resistance of the detector circuit, at least eight times smaller than the parallel combination of X and S, the worst error occasioned by ignoring the loss part of X is about 1%.
Patent GB-356067-A (GB)
Title: Improvements in display cards or carriers
IPC: B65D73/00
Filed: 1930-12-23
Abstract: 356,067. Display cards. ROBINSON, J. B., Wheat Bridge Mills, Wheat Bridge Road, Chesterfield, Derbyshire. Dec. 23, 1930, No. 38660. [Class 3 (ii).] In a card for displaying cylindrical or other containers dished at one or both ends, flaps are formed by cutting the card and are bent back to form a recess into which the container fits, the flaps engaging the dished ends. As shown in Fig. 1, four flaps are formed by a vertical cut 11 and two transverse cuts 12, 13: the part above the top cut is inserted into the dished top of the container, the flap 54 is bent back at 53 to engage the dished bottom, and the flaps 16, 17 are bent back at 14, 15 respectively to engage frictionally with the sides of the container. If desired, the cut 13 may be made shorter, and the creases 14, 15 tapered upwards, so that the container is held in an inclined position. Fig. 5 shows a modification for use with shallow containers, the flaps being formed by two intersecting cuts, straight or curved. If desired, the side flaps may be omitted, as may either one of the end-engaging flaps if only one end of the container is dished. Where a large number of recesses are formed on a single card, these are preferably arranged in staggered formation for greater strength.
Patent GB-991526-A (GB)
Title: Process for the production of polychloropyridines
IPC: C07D213/61
Filed: 1963-10-02
Abstract: Polychloropyridines are prepared by reacting a mono- or polychloro-2-(trichloromethyl)-pyridine with excess chlorine at elevated temperature.  The -CCl3 group is replaced by a chloro radical with a carbon tetrachloride as by-product, and nuclear hydrogen may be replaced by chlorine with hydrogen chloride as by-product.  The process may be in the liquid or vapour phase and temperatures up to 250 DEG  C. or over may be used, with ultra-violet irradiation. Examples describe the preparation of 2,3,5,6 - tetracxloropyridine from 3,5 - dichloro - 2 - (trichloromethyl) pyridine, 2,3,5-trichloro-6-(trichloromethyl) pyridine, and a mixed chloro-(trichloromethyl) pyridine composition; pentachloropyridine from 3,4,5-trichloro-2-(trichloromethyl) pyridine and 2,3,4,5-tetrachloro - 6 - (trichloromethyl) pyridine; 2,3,4,5 - tetrachloropyridine from 3,4,5 - trichloro - 2 - (trichloromethyl) pyridine; 2,3,5,6-tetrachloropyridine and pentachloropyridine from 3,5-dichloro-2-(trichloromethyl) pyridine; a polychloropyridine composition from 2,3-dichloro-6-(trichloromethyl) pyridine, and from mixed 2-(trichloromethyl) pyridines and chloropyridines; tetrachloropyridine and pentachloropyridine composition from dichloro-2-(trichloromethyl) pyridine composition.
Patent GB-843381-A (GB)
Title: A start-stop mechanism for cinematograph cameras
IPC: G03B19/18
Filed: 1958-12-02
Abstract: 843,381. Cinematographic apparatus. AGFA A. G. Dec. 2, 1958 [Dec. 13, 1957], No. 38847/58. Class 97(1) A start-stop mechanism for a rotary shutter disc of a cinematograph camera, comprises a start-stop slide adapted to co-operate with a brake for the shutter so that on operation of the slide when the shutter is in motion, first the brake is applied to the shutter disc, and then the shutter disc is positively stopped by the slide. In the position shown in Fig. 1, brake lever 9, pivotally mounted about pin 8 is held in its inoperative position by pin 12 rigid with start-stop slide 5. As the slide is advanced, lever 9 rotates under loading of spring 11, until brake block 10 comes to bear on rotary shutter disc 1. As the slide is advanced further flange 7a proceeds into the path of a projection 4 of the disc 1, thus positively stopping the disc. In order to take still pictures, slide 5 is moved into an even more advanced position, when projection 13 on the slide presses on the rear arm of lever 9, thus lifting the brake block off the disc, and flange 7a releases projection 4, thus allowing the disc to rotate until projection 4 engages a flange 7b, also on slide 5. On release of slide 5, projection 4 escapes from flange 7b and returns to its position adjacent to flange 7a, the brake again be-. coming effective.
Patent GB-1021326-A (GB)
Title: Recovery of zirconium values
IPC: C01G25/02
Filed: 1963-10-03
Abstract: Zirconium and hafnium values are recovered by heating a zirconium- and silicon-containing one with an alkali metal hydroxide on carbonate to produce an alkali metal zirconate containing silica and a water-soluble compound of silica, removing the latter by water-leaching, treating the residue with a compound having a metal cation which forms a water-insoluble metal silicate, treating the resulting composition with an aqueous acid, and separating the solid phase silica from the resultant aqueous zirconium-containing solution.  The silica may be separated by filtration or the zirconium may be extracted from the aqueous slurry of silica by use of an organic solvent, e.g. tributyl phosphate.  The compound used to treat the alkali metal zirconate containing silica may be calcium oxide, calcium hydroxide, an oxide or hydroxide of magnesium, barium or strontium, a chloride of calcium, magnesium, barium, strontium or zinc, or calcium nitrate. The acid may be nitric, hydrochloric, sulphuric or perchloric acid.
Patent GB-815274-A (GB)
Title: Preparation of sulphonyl chlorides of organic cyano compounds
Inventor: COMTE FREDERICK
IPC: C07C309/78
Filed: 1956-12-21
Abstract: In a process for the preparation of cyano organic sulphonyl chlorides ClSO2.A.CN, wherein A is a divalent organic group, the corresponding trichlorophosphazosulphonylacyl chloride Cl3P=N.O2S.A.COCl, is heated at 150-190 DEG  C. in the presence of a conversion moderator, which is an aryl or substituted aryl sulphonamide, preferably benzene or toluene sulphonamide, a sulphonyl chloride, preferably a sulphonyl chloride which is a previous preparation of that which is to be produced by the process, an inorganic acid of phosphorus, preferably orthophosphoric acid, or a small amount of water, preferably in the form of moist air.  The reaction is desirably carried out under reduced pressure so that liberated phosphoryl chloride distils from the reaction mixture and the amounts of moderator used are 2-10 parts of sulphonamide per 100 parts of acyl chloride, not more than 10 per cent w/w of sulphonyl chloride, 0.01-0.05 mol. of an inorganic acid of phosphorus per mol. of acyl chloride, and 0.1-2 per cent w/w of water.  Examples include the preparation of the following sulphonyl chlorides: p-cyanobenzenesulphonyl chloride, 2-cyano - 5 - furansulphonyl chloride, 1 : 8 - di - cyano - 4 : 5 - naphthalene - disulphonyl chloride, p-cyanocyclohexylsulphonyl chloride and 4 - cyano - 2 - nitrobenzene sulphonyl chloride, using as conversion moderators benzene-, b -toluene-, a -naphthalene-, and p-nitrobenzenesulphonamides, 96.6 per cent or 85 per cent phosphoric acid, water or moist air, and the sulphonyl chlorides to be prepared. Trichlorophosphazosulphonylacyl chlorides are prepared by reacting a sulphamoyl organic carboxylic acid with phosphorus pentachloride in the presence of phosphorus oxychloride.
Patent GB-1401727-A (GB)
Title: Drive assembly for physically propelled vehicles
IPC: B62M1/24
Filed: 1973-08-21
Abstract: 1401727 Cycle propulsion CYCLE-DRIVE CORP 21 Aug 1973 39404/73 Heading B7E Bicycle propulsion is by means of treadles 47 driving the back wheel via a chain 33, the chain passing at its front around sprocket 31, the drive between each treadle and the sprocket consisting of, for the right hand side of the cycle, a lever 46R reciprocatable with the treadle 47R and which is pivoted at 45R to a connector 43R in turn pivoted at 44R to an advance crank arm 42R, this latter being connected by a one-way clutch 41R to a bifurcated crank arm 34R, the clutch allowing rotation of arm 42R relative to arm 34R only in the direction of the rotation of arm 34R about sprocket drive axis DA, and there being between connector 43R and arm 42R a spring 54R which tends to maintain an angle #. In use if the effort applied to treadle 47R does not overcome spring 54R the drive force is transmitted from the connector 43R to crank arm pin 39R, but should the drive force overcome the spring and reduce the angle # then the force is transmitted from the connector to the pivot 44R of the arm 42R. The drive on the left hand side of the cycle is identical but designated with reference letters L and drives the sprocket directly. The pedals on the treadles may be moved between two positions, see. Fig. 3.
Patent GB-977280-A (GB)
Title: Improvements in or relating to fire extinguishers
Inventor: BLACKMAN ALAN EDWARD
IPC: A62C13/00
Filed: 1962-10-19
Abstract: 977,280. Fire-extinguishers. WALTER KIDDE CO. Ltd. Sept. 30, 1963 [Oct. 19, 1962], No. 39607/62. Heading A5A. A portable fire-extinguisher of the type which discharges free-flowing fluids, especially vaporizing liquid medium, comprises a container 1 having an outlet 2 at its upper end and a dip-tube 3 extending to near the bottom of the container. A manually operable valve 4 at the top of the container incorporates a swivel coupling comprising a tubular swivel portion 19 rotatably mounted in a bearing 20 in a cavity in the valve body 8, through which the valve communicates to a flexible hose 6 connected to a discharge horn 5, which is provided with securing means comprising a tubular section 24 carrying a socket member 26 with spring- loaded ball catch 28, whereby the horn may be releasably connected to a spigot 23 on the swivel coupling. The extinguisher is operated by a spring-loaded trigger 12, which operates the valve, and may be used one-handed in the vertical position when the horn is attached to the swivel coupling, or two-handed when the container &c. is held by the handle 10 in the vertical position and the horn is manipulated by the other hand.
Patent GB-1246809-A (GB)
Title: Calculating machine
IPC: G06C7/04
Filed: 1968-08-21
Abstract: 1,246,809. Zero key lock. OLYMPIA WERKE A.G. 21 Aug., 1968 [23 Aug., 1967], No. 39886/68. Heading G4B. A calculator including a displaceable pin carriage 7 comprises a stop arranged to prevent depression of a zero key 1, 2 or 3 when the carriage 7 is in a position XIII prior to setting. In one embodiment the stop is a member 23 fixed to the carriage, and the zero keys 1, 2, 3 are carried on stems 4, 5, 6 pivoted at 9 on a rail 8. At one end each stem carries a projection 17, 18 or 19 for depressing one, two or three zero-setting pins 11 respectively, and at the other end a member 20, 21 or 22 engageable with the lower surface of the stop 23 when the carriage is at the position XIII. When the carriage is in displaced positions III, II, I, the projections 19, 18 and 17 are engageable with the upper surface of the stop 23. The zerosetting pin 12 of the first decade may be longer than the pins 11 for actuation by a decimal point key 24. In a second embodiment, a further stop 27 is provided in place of the pin 12 and is engageable with the projections 17, 18, 19 when the carriage is in the position XIII. The stops project proud of the zero setting pins.
Patent GB-1353280-A (GB)
Title: Vehicle hydraulic braking circuit including anti-skid apparatus
IPC: B60T8/1761
Filed: 1972-08-29
Abstract: 1353280 Anti-skid brake apparatus HONDA GIKEN KOGYO KK 29 Aug 1972 [30 Aug 1971] 40089/72 Heading F2F A vehicle hydraulic braking circuit comprises anti-skid apparatus having first means for detecting wheel rotational deceleration, brought about by circuit oil pressure increase, reaching a predetermined reference value, second means for memorizong this value, third means actuated by the first means to stop oil pressure increase at this reference stage and to hold the pressure constant, fourth means for subsequently detecting if the rotational speed has decreased to a predetermined ratio or difference relative to the memorized value and for actuating the third means to decrease oil pressure, and fifth means for detecting, after such pressure decrease initiation, rotational acceleration and for actuating the third means during this detection to stop the pressure decrease. Upon wheel deceleration above a predetermined amount, caused by increasing oil pressure in the brake circuit 1, 2, 3, 4, the detecting device 20 operates a flip-flop 18 to close a valve 12 to stop oil discharge from a chamber 15 to a reservoir. A spring controlled piston 9 is held in position by constant pressure in the chamber 15 since a valve 14 controlling oil flow from a sump 16 is already closed. An extension 10 of the piston is held from advancement due to previous oil flow from the chamber 15 and the pressure in the brake circuit is held constant. At the same time, the wheel rotational speed is memorized by a device 21. The wheel rotational speed continues to decrease but when the speed value reaches a predetermined ratio or difference in relation to the memorized speed the detecting device 22 operates a second flipflop 19 to open the valve 14 to increase oil pressure in the chamber 15. The piston 9 and extension 10 are retracted thus increasing the effective volume in a chamber 3 in the brake circuit to decrease its oil pressure to nearly zero. Wheel deceleration decreases to zero, and acceleration begins due to braking pressure decrease; this acceleration is detected by a device 23 to reset the flip-flop 19. The valve 14 is closed and the pressures in chambers 15 and 3 are held constant. The rotational wheel speed continues to increase but the acceleration starts to decrease. When the differential of the acceleration is zero or negative, a device 24 resets flip-flop 18 to open valve 12 to decrease pressure in chamber 15. Resulting advancement of the piston 9 and its extension 10 cause a pressure increase in the brake circuit to increase braking and the above cycle is repeated until the wheel is stationary. The oil pressure is held constant between changes to minimize vibrations in the circuits.
Patent GB-976479-A (GB)
Title: Induction-coupled plasma flames
Inventor: GOOD WILLIAM MICHAEL
IPC: H05H1/30
Filed: 1962-10-24
Abstract: 976,479. Induction coupled plasma flame generators. STANDARD TELEPHONES & CABLES. Oct. 16, 1963 [Oct. 24, 1962], No. 40202/62. Heading H5H. A silica-glass main tube 1 has fused into it across a diameter two small tubes 2 which serve both as outlets for argon gas (introduced through a slotted inlet tube 3) and for access to the plasma flame within the main tube. The arc is initiated by touching the R.F. pancake coil 7 with a probe 11 connected to a carbon or tungsten electrode 8 supported in the top bung 6, and thereafter settles down as a ball of plasma flame 12 in the middle of the pancake, Fig. 2. By increasing the gas flow the flame can be induced to move to a region 13 across the ends of the tubes 2 for, e.g. the continuous feeding of materials for heat treatment. The flame may be removed from the path of the material, without turning it off, by reducing the gas pressure so that it reverts to position 12. In an alternative arrangement, Fig. 3, two exciting coils 7a, 7b may be used to produce two plasma flames 12a, 12b, which unite to produce a column of flame 14 as the R.F. power is increased. Dimensions and operating powers are given.
Patent GB-924543-A (GB)
Title: An antistatic gramophone record disc
IPC: H05F1/02
Filed: 1961-11-10
Abstract: 924,543. Antistatic gramophone record discs. TOKYO SHIBAURA CO. Ltd. Nov. 10, 1961 [Nov. 14, 1960], No. 40276/61. Class 40 (2). A binder with antistatic properties (four formulations are detailed) and vinyl granules are mixed and stamped at a temperature such that the bonded granules retain an antistatic coating. The additional pressure exerted in the grooves during stamping confines the majority of the excess binder to the lands between the grooves and particularly to the plane portions of the record, Fig. 1. Where the usual biscuit of mixture is placed at the centre of the stamper and radial migration occurs in stamping, the formulation is such that the granules become radially elongated, Fig. 2, but the concentration of excess binder away from the grooves is maintained.
Patent GB-1388872-A (GB)
Title: Cleaning and treating compositions
IPC: C11D1/00
Filed: 1972-03-07
Abstract: 1388872 Compositions for treating substrates MINNESOTA MINING & MFG CO 7 March 1972 [8 March 1971] 40327/74 Divided out of 1388871 Heading DIP An alkaline treating composition capable of imparting water and oil repellancy and stain resistance to a substrate, comprises, in an aqueous medium components (c), (d) and (e) and optionally (a) or (b) of the composition claimed in the parent Specification 1388871.
Patent GB-1272709-A (GB)
Title: Hopper type apparatus for orienting and feeding bottle and jar caps, or the like
Inventor: AIDLIN SAMUEL SIMEON
IPC: B65G47/14
Filed: 1970-08-21
Abstract: 1,272,709. Orienting crown corks. S. S. AIDLIN and S. H. AIDLIN. 21 Aug., 1970 [1 Dec., 1969], No. 40446/70. Heading B8S. Crown corks 28, or the like, are carried round, anticlockwise in a groove 24 in a rotating disc by pins 34 and are raised from the disc by a shoot 40, 50. As they pass along the shoot a nozzle 60 blows any closures which are recess upwards off the shoot whilst the others pass along down portion 54. The closures which are blown off are turned through 180 degrees by a spiral shoot 62 which returns them to the rotating disc within the hopper 10. Recesses 48 in the shoot 40 permit the passage of the pins 34.
Patent GB-1179790-A (GB)
Title: Warehousing equipment
Inventor: BURCH ARTHUR ROBERT
IPC: B66B1/16
Filed: 1967-09-05
Abstract: 1,179,790. Lift control systems. CLARK EQUIPMENT CO. 5 Sept., 1967 [19 Sept., 1966], No. 40501/67. Heading B8L. [Also in Divisions G3, G4 and H2] Apparatus for effecting first a coarse positioning and then a fine positioning of a movable member, e.g. a stacker vehicle includes a voltage divider 10 (Fig. 1) and a linear voltage generator 319 feeding signals representing the desired and actual position of the stacker to a summing amplifier 50, the error signal from which controls the motor M200 positioning the stacker. The output from a transducer 231 controls the motor M200 as the stacker nears its desired station. Identical apparatus may be used for moving the stacker horizontally and vertically. In the embodiment described the required position is entered by operating one of the pushbuttons 41-45 controlling relays 31-35 so that the associated relay contact 21-25 closes to feed a voltage signal from voltage divider 10 via. a normally closed, contact CR1-1 to the amplifier 50. As the stacker moves a shaft 304 is rotated to move a screw 311 and hence position a pin (318, Fig. 4, not shown), attached to a screw follower (314) in a transducer 319 which feeds a signal representing the actual position of the stacker via closed contacts CR1-2 to the amplifier 50. Zener diodes 61, 62 are connected across the amplifier to limit the magnitude of the signal controlling motor M200. A reed switch 256 is operated by magnets 252 each time the stacker moves past a station to operate a relay CR1. The relay has a time delay and consequently until the stacker nears its required position it is moving too quickly for the relay contacts to operate before the switch 256 opens. When the error signal from amplifier 50 is small, relay CR1 is energized when switch 256 closes so that contacts CR1-1, CR1-2, CR1-4 open and contacts CR1-3 close. The output of Hall effect transducer 231 sensing magnetic strips at each station is then fed to amplifier 50 the output from which is applied to an integrating capacitor 63 so that the signal from the amplifier increases to drive the motor M200 until the output from the transducer 231 becomes zero.