baber/WOPTO huggingface dataset:
Patent GB-537501-A (GB)
Title: Process for replenishing and correcting the electrolyte in the refining of aluminium by igneous electrolysis
IPC: C25C3/24
Filed: 1939-06-30
Abstract: 537,501. Electrolytically refining aluminium. COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES ALAIS, FROGES ET CAMARGUE. June 30, 1939, No. 19090. Convention date, July 12, 1938. [Class 41] To replenish or correct the composition of fused electrolyte in refining aluminium by igneous electrolysis in a vessel a containing a lower layer b of aluminium-heavy-metal alloy as anode and an upper layer d of pure aluminium as cathode, part of the electrolyte c is separated from the remainder as by a carbon tube f, salts are then added and purified by electrolysis of the separated part of the electrolyte while still continuing refining the aluminium as by leaving part of the liquid aluminium within the tube f to act as an auxiliary cathode electrically connected through the tube f. Fluxes, e.g. sodium chloride may be added at the same time. According to the Specification as open to inspection under Sect. 91 part of the container a may be partitioned off for supply of salts which pass through a slot in the partition. This subject-matter does not appear in the Specification as accepted.
Patent GB-582924-A (GB)
Title: Improvements in or relating to rotary internal combustion engines
IPC: F01C1/063
Filed: 1944-10-05
Abstract: 582,924. Rotary engines.. POSTUMUS, R. Oct. 5, 1944, No. 19125. [Class 110 (ii)] In an internal-combustion engine, pairs of vanes a, a<1> and c, c<1>, on concentric shafts b, d, are geared together by two pairs of elliptical gears j, j<1>, k, k<1>. An inlet port f, and an exhaust port g are periodically covered by the vanes.
Patent GB-1344765-A (GB)
Title: Segmented tyre mould
IPC: B29D30/06
Filed: 1972-04-25
Abstract: 1344765 Moulding tyres GOODYEAR TIRE & RUBBER CO 25 April 1972 [1 June 1971] 19131/72 Heading B5A A tyre mould includes sidewall mould members 22, 24 and radially movable tread moulding segments 26 with tongues 50 which engage radial guideways 52 in the member 24. The segments have inclined surfaces 94, 96 engaged by similarly inclined surfaces 92, 93 of casing rings 80, 82. When a tyre has been clamped between the members 22, 24 by the operation of an hydraulic cylinder 160 which forces a clamp 178 downwardly, the segments are moved inwardly by a series of screw jacks 112; each jack has its screw 114 detachably connected by means 118-122 to a lug 116 on a segment. Such means are removed after the inward movement of the segments whereupon the upper casing ring is lowered by a crane having hooks 88 engaging bars 84 on the casing ring whereby its wall surface 92 engages the surface 94 of the segments tending to urge them further inwardly and to impress the trend pattern on the tyre. The crank hooks are then brought into engagement with similar bars 84 on the lower casing ring to raise it and bring the surfaces 93, 96 into engagement whereupon the whole mould assembly is raised from a base 100 and transported to a heater for curing the tyre. Such assembly includes a bore assembly with an air supplied bladder 62 and surfaces 64, 66 for aligning engagement with the members 22, 24. The base includes three pillars 150 which support the mould and pass through apertures in the lower easing ring and engage, at their upper ends, within recesses in the member 24. Each of a number of circumferentially spaced posts 110 support a screw jack driven by a motor 132 having axially aligned driving shafts flexibly coupled to drive shafts of adjacent jacks.
Patent GB-777724-A (GB)
Title: Improvements in or relating to vent plugs for electric accumulators
IPC: H01M2/12
Filed: 1954-07-01
Abstract: 777,724. Batteries. COMPAGNIE GENERALE D'ELECTRICITE. July 1, 1954 [July 3, 1953], No. 19337/54. Class 53. A vent plug for an accumulator comprises an outer threaded chamber 1 having a sloping floor 11 and gas inlet openings 4, 5, and an inner chamber 2 having a sloping floor 12 and gas inlet openings 6 at right-angles to the openings 4, 5. Above the chamber 2 is a filtering cartridge 3 packed with granular material, fritted glass, mineral fibres or with a pile of washers of glass silk agglomerated with synthetic resin or other insoluble material to retain moisture entrained with the gases and to prevent any explosion occurring at the outlet 10 from being propagated into the plug.
Patent GB-147449-A (GB)
Title: Improvements in and relating to endless track vehicles
IPC: B62D55/065
Filed: 1920-07-07
Abstract: 147,449. Atlas Metallindustrie Ges. Nov. 26, 1914, [Convention date]. Drawings to Specification. Endless-track vehicles.-Endless-track vehicles for military and other purposes are provided either in the front or rear with a jib-like frame fitted with auxiliary tracks to enable the vehicle to surmount obstacles. The vehicle may be armoured, and the auxiliary tracks may be fitted with means for throwing them into gear with the main tracks.
Patent GB-1101165-A (GB)
Title: Photographic camera
IPC: G03B19/04
Filed: 1965-05-07
Abstract: 1,101,165. Photographic cameras. AGFA A. G. May 7, 1965 [May 8, 1964], No. 19374/65. Heading G2A. A photographic camera in which the film 10 is advanced by a driven sprocket 8 is provided with further, freely rotatable, sprockets 13, 14 in the region of the sprocket holes at the upper and lower film margins to facilitate automatic threading of the film from a supply cartridge 3 on to a spool 5 and to prevent lateral displacement of the film in the image frame 6. The pressure plate 7 of the camera is provided with recesses 7a, 7b to accommodate the teeth of the sprockets 13, 14, a further pressure plate 15, resiliently connected with the plate 7, being provided opposite the sprocket 8. The plate 15 may be dispensed with, in which case the plate 7 extends into the region of the sprocket 8.
Patent GB-959240-A (GB)
Title: Pulverizing machine
IPC: A47J43/25
Filed: 1962-05-21
Abstract: 959,240. Pulverizing-machines. E. V. BLOOMQUIST, and G. E. BLOOMQUIST. May 21, 1962, No. 19415/62. Heading B2A. A machine for pulverizing blocks of ice or frozen animal food 75 comprises a rotatablymounted cutter head 22 which carries a pair of knives 36, 37 and is formed with a cavity 80 in front of each knife for receiving cut material and a hopper 66 for directing the material to be pulverized downwardly on to the cutting zone which extends between vertical and horizontal planes passing through the longitudinal axis of the head; the circumferential extent of the cutting zone is less than the circumferential distance between the knives. A single head 22 may be employed of two as shown. A block of material 75 fed into the hopper 66 is alternately cut by the knife 36, which has a serrated edge, and the knife 37, which has a straight edge and is set further back into the head ; each knife is adjustable in height, secured by a wedge 34 and inclined to the longitudinal axis in the reverse direction relative to the opposite knife.
Patent GB-515864-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03F3/52
Filed: 1938-06-30
Abstract: 515,864. Valve circuits. WHITE, E. L. C. June 30, 1938, No. 19442. [Classes 40 (iii) and 40 (v)] The circuit of an ultra short wave thermionic amplifier consists of three coaxial tubular conductors 5, 6, 8. Conductor 6 is earthed and connected to the grid 2 of the valve, conductor 5 being connected to the anode 1 and the high tension supply, while flanges at the lower ends of conductors 5, 6 form a condenser with insulation 7. A metal tube 8 is connected to the cathode 3 via blocking condensers 9 at one end and is effectively earthed to the rim of conductor 6 at the other end. Heater current for the valve is supplied through conductors 10 from a source 11 and a source 12 provides grid bias. The input radio frequency oscillations are fed into the amplifier by conductor 13 suitably tapped on the cathode circuit and the output is taken from a tapping on the outside of tube 6 and is conveyed by lead 14 to the load 15. The input circuit, due to the manner of its connection to the cathode, is heavily damped but the power absorbed in this imput impedance is not dissipated but is transferred to the anode circuit. As the outside of tube 5 and the anode are effectively at earth radio frequency no'loss is introduced by the water jacket 16 or any cooling fins attached to the anode. If desired the tube 5 may be connected to earth and the cathode maintained at a suitable negative potential, the grid being suitably biased and earthed through a condenser or acceptor circuit.
Patent GB-649659-A (GB)
Title: Improvements relating to members or articles made of cast concrete
IPC: B28B23/00
Filed: 1948-07-20
Abstract: 649,659. Moulding concrete railway sleepers, beams, &c. REDWOOD, Sir T. B. July 20, 1948, No. 19458. [Class 87 (ii)] A nut 7 is embedded within a concrete railway sleeper, beam or other article with the help of a composite core-pin comprising a rod 5 reduced in diameter at 8 and a sleeve 9 fitting over the reduced part 8. The sleeve has a threaded end 10 on which the nut is screwed. The core-pin passes right through the article, being located at the bottom by a hole 6 in the mould and at the top by a hole 3 in a bar 2 secured to the mould. The core-pin is resiliently urged downward by means of a resilient steel bar 14 secured thereto, the bar being detachably engaged under a catch 15 fixed on the bar 2. In use, with the parts in the position shown (and the nut having previously been given a protective coating of bitumen) concrete is poured into the mould. When it has set, the bar 14 is released from the catch 15 and the rod 5 lifted out. The article is left for 3-5 days to harden, then removed from the mould and inverted, and finally the sleeve 9 is unscrewed from the nut by means of a tool that fits a hexagonal recess 11 in the sleeve. The sleeve is preferably tapered to facilitate extraction. In making a sleeper, four nuts may be thus embedded, two near each end, for securing chairs to the sleeper, the holding-down bolts passing through the holes left by the core-pins and screwing into the nuts. The two bars 2 near each end may form part of a frame which can be clamped to the top of the mould. A strengthening ring 6a is welded to the mould bottom. Fig. 2 shows a modification in which the parts 8, 9 are replaced by a single member 16 having a hexagonal end 19 for unscrewing, the part 5 having an extension 18 which fits a recess in the top of member 16.
Patent GB-879953-A (GB)
Title: Improvements in or relating to modulator circuit arrangements
Inventor: MORTLEY WILFRID SINDEN
IPC: H03C1/00
Filed: 1958-06-18
Abstract: 879,953. Amplitude modulating systems. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. March 2, 1959 [June 18, 1958], No. 19502/58. Class 40(5) A modulator comprises a cable applying unidirectional modulating signals to a matching resistance 4 through a low pass filter 11, the resistance and a unidirectioanl conductor 3 being connected in series across part at least of a tuned circuit 10, 2 to which carrier is supplied through a cable terminated by a matching resistance 7, resistor 8 forming an attenuator. The filter 11 suppresses carrier frequencies from reaching the modulation cable. With the diode 3 poled as shown, negative unidirectional modulation is handled. As the modulation goes more negative, the amplitude of the negative going carrier increases before limiting by diode 3 occurs. With a bias source in series with the diode 3 bi-polar signals may also be handled. The valve 12 and circuit 1, 2 may be coupled to form an oscillator and the carrier input circuit dispensed with. Two modulator circuits 11, 3 may be coupled to one of a pair of tuned circuits each energized in opposite phase from a carrier input and the outputs then amplified and additively combined.
Patent GB-585236-A (GB)
Title: Improvements in or relating to presses and like machines
IPC: B30B1/24
Filed: 1944-10-10
Abstract: 585,236. Mechanical presses. JACKSON, C. E. Oct. 10, 1944, No. 19535. [Class 87 (ii)] [Also in Group XXIV] In a press or the like of the kind in which a ram a is brought up to the work by auxiliary means acting through a pinion c engaging a rack b on the ram, fluid pressure being then applied by a piston acting on the pinion through a pawl l, the teeth of the pawl are spaced apart a distance equal to n+¢ times that between the pinion teeth, thereby ensuring positive engagment of the pawl. The pawl is normally held in central position by a spring p and is pivotally mounted on a bell crank lever h pivotally supported by levers f rotatably mounted on the pinion shaft. Fluid pressure acts through a rod k in the bell crank. Initial movement of the ram may be effected by a low pressure air cylinder r or by a solenoid, or by a handwheel in the pinion shaft.
Patent GB-856890-A (GB)
Title: Means for detachably interconnecting articles of furniture
Inventor: BRANNAN WILLIAM
IPC: A47C1/124
Filed: 1958-06-19
Abstract: 856,890. Fixing chairs in rows. PEL Ltd. June 19, 1959 [June 19, 1958], No. 19602/58. Class 52(2) Chairs are connected in rows by means of tubular connecting pieces 10 insertable into tubes 9 secured to the chairs and having a hole 9a in the wall thereof, the pieces 10 having holes 10a in each of which is located a radially extending stud 11 secured to one limb of a hair-pin shape leaf spring 12 so that after depressing the stud 11 the piece 10 can be inserted in tube 9 and the stud 11 enters hole 9a to lock the parts together. A part 9b of the tube may be outwardly splayed to cause stud 11 to be urged inwardly as piece 10 is inserted.
Patent GB-1405691-A (GB)
Title: Tool holders
IPC: B23B31/06
Filed: 1973-04-25
Abstract: 1405691 Chucks HOUDAILLE INDUSTRIES Inc 25 April 1973 [2 May 1972] 19610/73 Addition to 1,351,349 Heading B3B In a tool holder assembly according to claims 1, 2 or 5 of the main patent in which a recess 12 of a spindle 11 receives a tool, the driving keys of which pass through slots 25 in a locking ring 19 and enter slots 14 in the spindle when the locking ring is in a latched position, and in which the latch comprises a release pin 40 that carries a latch pin 42 that engages the locking ring to hold it in the latched position against springs 36 which act to automatically rotate the locking ring and clamp a tool in the recess, an improvement is constituted in that the release pin 40 is directly slidably carried by the spindle 11 for movement along its length and retractably projects from the bottom end of the spindle for engagement by the tool when it is inserted and the latch pin 42 projects through a slot 43 in the spindle for movement in a direction perpendicular to its length into an axially opening notch 26 in the locking ring 19. The springs 36 lie in parallel in a groove around the locking ring 19 and one of their ends act against a stop 17 on the spindle and their other ends act on the locking ring 19. A cylindrical flange 26 is cut away over an arcuate portion to produce abutments that engage the stop 17 to limit rotation of the locking ring.
Patent GB-635397-A (GB)
Title: Improvements in or relating to athletic footwear and spikes therefor
IPC: A43C15/16
Filed: 1948-07-22
Abstract: 635,397. Athletic footwear. LOWY, F. July 22, 1948, No. 19627. [Class 17 (ii)] Spikes for athletic footwear comprise a base 10 and a spike which is formed with a cavity 9 extending from the base towards the point 8. The cavity is of such depth that the portion of the spike which protrudes beyond the outer sole is solid. The base also may be hollowed out. Alloy steel may be used for the stud.
Patent GB-183356-A (GB)
Title: Improvements in and relating to file cutting machines
IPC: B23D73/00
Filed: 1921-07-21
Abstract: 183,356. Marks, A. W. July 21, 1921. imilling-machines. - In a machine for cutting arc-shaped teeth on half-round files, the file blank is given a rolling motion past the face of a rotating milling- cutter. The blank x, Fig. 5, is clamped between a projection 9 on a holder 8 and a shoulder w on a sleeve 11, the holder having a cylindrical stem 10, slidable through the sleeve to suit different lengths of files, by means of a hand-wheel 20 and screw 18 coacting with a bush 19 having a pin 15 which engages the holder. The blank is secured in position, with its flat side towards the holder, by a nut 13 on the stem. The holder is supported by the sleeves 11, 16, mounted in bushes which are slidable in vertical slots in brackets 5, 6, Fig. 1, by means of a rod 28 actuated by a cam 26a on a shaft 25, a rolling motion being given to the blank by pinions 21<a>, 22a, secured to the sleeves, coacting with fixed racks 23, 24. The brackets 5, 6 are mounted on a carriage 2 which is given an intermittent longitudinal motion for cutting separate teeth, the cutter head 1 being withdrawn after each tooth is cut. For cutting taper files, the pinion 22a is provided with fewer teeth than the pinion 21a. The cam shaft is driven from any convenient part of the machine through a flexible shaft and worm gearing 25a, 25<b>.
Patent GB-650007-A (GB)
Title: Improvements in or relating to circuits including negative resistance devices
Inventor: HARLING JOHN WEST
IPC: H03B7/06
Filed: 1948-07-23
Abstract: 650,007. Non-contact-making relays. STANDARD TELEPHONES & CABLES, Ltd. July 23, 1948, No. 19709. [Class 40 (iv)] [Also in Group XL (c)] A trigger circuit or pulse amplifier comprises a crystal (e.g. germanium) whose characteristic, Fig. 3, includes two branches 15, 17, one of positive and one of negative slope, the crystal being biassed at a point 18 on the positive slope so that the incoming pulse changes the operating point to point 19 on the negative slope. In the basic circuit, Fig. 1, the crystal 1 is biassed by battery 5 over a load resistance 6, a positive pulse applied to terminals 2, 3 causing a sudden drop of potential between terminals 8, 9. In this circuit a somewhat larger negative pulse is required to restore the circuit, but the connection of an appropriate capacity across the crystal makes the circuit self-restoring. The duration of the output pulse may then be determined by the insertion of a resistance in series with the crystal. Fig. 7 shows an arrangement for repeating, without change of polarity, pulses fed over a coaxial cable which also feeds the biassing voltages to the crystals (via choke 28). An incoming positive pulse is fed via the centre and left-hand windings of the transformer 31 to the crystal 25 which thereupon feeds a negative pulse to the transformer, the right-hand winding of which is wound in the opposite sense so feeding a positive pulse to the crystal 34. The latter thereupon produces a negative pulse which is inverted in the transformer and fed out to the coaxial line 23. Clearly in this arrangement the outgoing positive pulse is preceded by a negative pulse. To prevent such a negative pulse, received from a preceding repeating station, from affecting the crystal 34, the latter is biassed to a somewhat lower potential than crystal 25. A rectifier 41 may also be shunted across the cable to absorb the outgoing negative pulse. A rectifier 44 prevents the positive outgoing pulses being returned over the incoming line. The right-hand half of the circuit may be omitted if polarity inversion may be tolerated. In this case the two windings of transformer 31 would be wound alternatively in the same and opposite sense at successive repeating stations.
Patent GB-262370-A (GB)
Title: Improvements in or relating to weighing scales
IPC: G01G1/28
Filed: 1925-08-05
Abstract: 262,370. Dayton Scale Co., and White, A. E. Aug. 5, 1925. Addition to 216,541. Indicating-mechanism ; loose-weight apparatus. -The indicating-mechanism described in the parent Specification is operatively connected to an automatic weight-changing mechanism whereby the load is indicated in all cases as one unitary amount. As shown in Fig. 1, the device is applied to a weighing-scale of the kind described in Specification 259,340. The indicating-chart is mounted on a rotatable drum 24 which is connected by a rack-rod 24<a> to the weigh-beam 20 and is thereby set in accordance with part. of the load balanced by the pendulous resistant 22. The chart is divided into a series of sections 90 each viewable through one of a series of openings 100 in a shutter 95. The shutter is operatively connected by a rod 98 to the weight-changing lever 26 so that only that section of the chart is visible that corresponds to the number of weights 25 in operative position. As shown in Fig. 2, the device is applied to a weighing-scale of the kind described in Specification 260,679, the drum being connected to the weigh-beam and the shutter to the cam-shaft of the weight-changing mechanism.
Patent GB-292491-A (GB)
Title: Apparatus for massage
IPC: A61H15/02
Filed: 1927-07-25
Abstract: 292,491. Sick, G. June 20, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Massage; heating and cooling appliances.-A massage appliance comprising a hollow member with internal means for raising or lowering the temperature is rounded off at least at one end and is mounted on a handle lying at an angle to the axis of the roller member. In the form shown a hollow roller C to be filled with hot or cold water is mounted to rotate on an axle A which is connected to a handle B by means of a support B<1> connected at an acute, obtuse. or right angle to the axle. The support may be shaped to form a succession of such angles, or the handle may be secured directly to the axle at any desired angle. The hollow roller, which may be elongated or formed as a ball, may be heated by means of a fuel briquette, or by electricity or may be heated or cooled by chemical means. When electrically heated the conducting wires may pass through a hollow handle and support or may enter a hollow axle directly. The surface of the roller may be smooth or grooved, or formed with various specified arrangements of projections or depressions or both. The outer wall may be detachable. The roller may be fixed to an axle turning in the handle member. Specification 280,168 is referred to.
Patent GB-1413007-A (GB)
Title: Nuclear reactor installations
IPC: G21C15/12
Filed: 1973-04-25
Abstract: 1413007 Nuclear reactor containment SIEMENS AG 25 April 1973 [26 April 1972] 19749/73 Heading G6C In a nuclear reactor (e.g. PWR) installation, a reactor pressure vessel 1 is surrounded by a concrete biological shield comprising an inner portion 3 surrounding the vessel 1 and an outer portion 4 which is spaced from the inner portion by a gap 5 through which coolant can be passed to cool the shield. In the embodiment shown the lower region of the inner portion 3 is thicker than other regions and has embedded therein coolant passages 22 graded in diameter according to the local thickness of concrete. An insulating layer 8 is supported by the interior surface of the inner portion 3 to separate the latter from a reactor pit 26 which contains static gas. Air is circulated as the shield coolant and is discharged from the gap 5 via ducts 10 and annular passages 28 surrounding reactor coolant lines 12 into the reactor building 9. Alternatively, the shield is cooled by CO 2  or N 2  circulating in a closed system. Leakage flow into the pit 26 from the building is restricted by inserts 15, but, in the event of an accident, the ducts 10 and passages 28 are available as vent paths for steam from the pit 26. In another embodiment (Fig. 1, not shown), the inner portion (3) of the shield does not contain embedded coolant passages but there are ducts (25) passing between the portion and the lower wall region of the building (9).