baber/WOPTO huggingface dataset:
Patent GB-263077-A (GB)
Title: Improvements in tuned radio frequency receiving circuits
IPC: H03F1/36
Filed: 1926-03-08
Abstract: 263,077. Lovejoy Development Corporation, (Assignees of Lovejoy, D. R.). Dec. 15, 1925, [Convention date]. Thermionic amplifiers and detectors.-In order to prevent self-oscillation in a radio receiving set, whilst maintaining the set in its most sensitive state, the tuning-element or elements of the set are linked with a device for regulating the voltage applied to tho plate. The arrangement is particularly applicable to detector valve circuits using reaction, as shown in the Figure, the tuning condenser B being linked to a potentiometer arm H. This arms moves over a resistance F, G which is connected at its ends to movable tappings M, K on a further resistance connected across the filament or other battery E. The plate potential supplied by the battery S is thus augmented by the potentiometer F, G to a variable degree dependent on the setting of the tuning condenser. The potential gradient along the resistance F, G may be made non-uniform by connecting additional taps U on the resistance I, J to selected points on the resistance F, G. The reaction coupling N, or an equivalent capacity coupling, is permanently set. Specification 253,072 is referred to.
Patent GB-624479-A (GB)
Title: Improvements in or relating to treatment of molten metals and molten alloys
IPC: C22B21/06
Filed: 1947-03-06
Abstract: A process for degassing molten metals, such as aluminium, magnesium and their alloys, consists in placing on the molten metal a tablet formed by compression of an organic bromine or iodine compound so as to have a higher specific gravity than the molten metal with which it is used.  The compound used may be tetrabromethane, hexabromethane, carbon tetraiodide or hexaiodoethane.  Two or more of these compounds may be used in combination.  The tablet may include one or more of the following, namely: an amount of barium chloride sufficient to ensure that the specific gravity of the tablet is such that it will sink in the molten metal, an amount of grain refining agent which will leave a residue of lower specific gravity than the metal so that the residue will rise to the surface of the metal to permit of its ready removal, the amount of grain refining agent being insufficient to reduce the specific gravity of the tablet below that of the molten metal.  The degassing agent may consist of hexachlorethane with a chemical product, non injurious to the molten metal, and in such amount as to increase the specific gravity of the tablet to above that of the molten metal, e.g. at least 50 per cent of copper.  The said chemical product should have no injurious effect on the metal treated and when used with magnesium or magnesium alloys the resulting tablet should have a specific gravity not less than 2-0. Thus not more than 20 per cent of barium chloride or barium carbonate may be included in a tablet with hexachlorethane.
Patent GB-592450-A (GB)
Title: Apparatus for determining the moisture content of materials
IPC: G01N27/04
Filed: 1945-03-14
Abstract: 592,450. Determining physical qualities of materials. MARCONI INSTRUMENTS, Ltd., BARTLEY, W. B., and MAY P. C. March 14, 1945, No. 6411. [Class 37] An apparatus for determining the moisture content of materials comprises a pair of electrodes contained in a chamber and means for applying to the material, which is situated in the chamber, a predetermined mechanical pressure so that the measurement is reproducible. Electrodes 6 are contained in a metal tube 1 which is mounted upon an insulating block 5. Situated between the electrodes is a guard strip 7 which is in contact with the tube 1 so that any moisture on the surface of the insulator 5 shall have no effect on the test results. With the cap 2, plunger 3 and spring 4 removed from the tube, it is filled to a predetermined level with the substance to be examined. The cap 2, plunger 3 and spring 4 are then replaced and the cap 2 is screwed down until a mark 9, which may be part of a graduated scale, appears through the hole in the cap. The admittance, conductance or susceptance between the electrodes 6 is measured and the moisture content of the material is derived therefrom.
Patent GB-125721-A (GB)
Title: Improvements in or relating to the Winding of Strands of Flexible Material into Spherical Bodies, such as in the Production of Balls for Playing Games.
Inventor: MELLERSH-JACKSON WILLIAM JOHN
IPC: B29D99/00
Filed: 1918-04-16
Abstract: 125,721. Jackson, W. J. Mellersh-, (Revere Rubber Co.). April 16, 1918. Balling-machines; stop-motions.- In a machine for winding strands of flexible material on spherical bodies, such as golf balls, the sphere is held between opposed rotary heads comprising tapered gripping-rollers a, b, c, d, Fig. 4. The rollers are rotated independently, and the diagonal pairs a, d and b, care rotated intermittingly so that at times they rotate simultaneously and at times one pair is stationary. The sphere is caused to turn about the winding axis W by the bodily rotation of both heads and in turn about the axes X, Y, Z according to whether both pairs of rollers or one or other pair is rotating. The rollers 29, Figs. 1 and 3, have plain and fluted portions and are carried in a yoke 22, on a hollow shaft 20 and are rotated intermittingly about their own axes by bevel gearing 24, 27 and mutilated pinions 25, 26, and 30 from a central shaft 21. The shafts 20, 21 are rotated by two pinions 18, 17 having a slightly different number of teeth, and these gear with wheels 15, 14 on the main shaft 6. The yokes 22 also carry antifriction devices 31 for holding the sphere being wound. The winding-heads are separated slightly as the winding progresses by bell-crank levers 32, the shafts 20, 21 sliding in their journals 5. The levers 32 have intermeshing segments 37. The winding-heads are forced to. wards one another by a weight 40 acting through links 39 upon the levers 32 and also, when the ball has increased in size, by springs 41. The strand is led from a reel 43 controlled by a tensioning-device 45, round a number of grooved pulleys 46, and over a grooved pivoted arm 48 controlled by a spring, to the sphere. The machine is driven by a belt 10 through a pulley 9, controlled by a clutch 8 normally held in gear by an electrically operated catch 12. When the sphere attains the desired size contact is made between a stop 42 and a part 33 carried by the bell-crank 32 and the catch 12 released. When the strand breaks, the arm 48 rises and makes electric contact to release the catch 12. A handlever 54 with a lateral extension may be provided to act upon the bell-crank levers 32 and separate the winding-heads to allow the sphere to be removed or a new one inserted.
Patent GB-765720-A (GB)
Title: Improvements in and relating to centrifugally operated mechanisms, such as motor starter switches
IPC: H02K11/00
Filed: 1955-03-04
Abstract: 765,720. Centrifugal governors. GENERAL ELECTRIC CO. March 4, 1955 [March 4, 1954], No. 6485/55. Class 57. [Also in Group XXXVII] A centrifugally operated mechanism comprises a spring 47 having a main coiled body 48 and radially extending ends 50, 51 connected to two members 25, 35 mounted for rotation with a shaft 10, one of the members 25 being axially slidable along the shaft, and the main body 48 of the spring being arranged to swing away from the shaft 10 above a predetermined speed and to be returned by its own spring bias below that speed, thus producing momentary axial motions of the member 25. A switch (see Group XXXVII) for the starting winding of an induction motor is actuated by the movements of the member 25 which is slidably splined to the shaft 10 and provided with seats 34 to receive transverse portions on the ends 51. Similar portions on the ends 50 are held by transverse channels 44 formed by fingers on the member 35 which is press fitted to the shaft 10.
Patent GB-525759-A (GB)
Title: Improvements in or connected with mining machines of the cutter-chain type
IPC: E21C35/20
Filed: 1939-02-28
Abstract: 525,759. Mining-machines. MAVOR & COULSON, Ltd., and BUCHANAN, G. M. Feb. 28, 1939, No. 6555. [Class 68 (i)] An overcutting, cutter-chain mining-machine is provided with a helical conveyer operating transversely at the trailing side of the cutter chain, and at about or below the level of the chain, to remove and regulate the deposition of cuttings emerging with the cutter chain. In Figs. 1 and 3, the cutter-chain jib C is carried by a turret B adjustable vertically by screw columns 3 or hydraulic cylinders. The cuttings conveyer D comprises a helix 6 in a casing 5, and a carrier E adapted to be reversibly fixed, by clamping means controlled by a rotatable head 7, to a gear box F at the rear of the turret; a shaft 9, which drives the helix 6 through gears 3, is thereby engaged through clutch means 12 with either of bevel gears 13. The gears 13 are driven from the machine motor through gear box G and telescopic shaft 15. A casing H steers the cuttings to the conveyer and includes a removable wall 18, Fig. 4, held by pins 21 and provided with a leather or rubber edging held by bolts, the wall 18 and edging being reversible according to the side of the machine on which the cutter chain is cutting. The casing 5 has openings on opposite sides to receive the cuttings, the opening not in use being closed by a removable cover. When the conveyer is reversed, the helix 6 is replaced by one of opposite pitch. In Fig. 6, the cutter jib C<SP>1</SP> is not adjustable vertically and the conveyer D<SP>1</SP> is driven through shaft 24 from the crown wheel 26 on the shaft of the cutter-chain driving sprocket. The helix may be continuous or comprise a series of blades. Means may be provided to guide the cuttings away from the conveyer, or the latter may be below the cutter-chain, a shoot &c. then guiding the cuttings to the conveyer. Specifications 329,837, [Class 68 (i)], and 512,443 are referred to.
Patent GB-228734-A (GB)
Title: Method of producing yeast from molasses or from a mixture of molasses and cereals
IPC: C12N1/18
Filed: 1924-03-14
Abstract: 228,734. Jorgensen, A. P. C., and Kalhauge, N. L. C. H. March 14, 1924. Bacteria, cultivating.-Lactic acid bacteria for acidifying molasses are obtained by isolating them in the ordinary way from raw sugar molasses and cultivating them successively, at a temperature of 48‹ to 58‹ C., in mixtures of molasses and extract of malt, in which the proportion of malt extract is gradually reduced from 50 per cent till, at the end of three weeks, the medium used consists of molasses only.
Patent GB-755654-A (GB)
Title: Method and apparatus for dehydrating solutions or suspensions by freezing
IPC: B01D9/04
Filed: 1954-03-08
Abstract: 755,654. Concentrating solutions by freezing. COMMONWEALTH ENGINEERING CO. OF OHIO. March 8, 1954, No. 6705/54. Class 29. In apparatus for concentrating solutions by freezing them to a mush in a refrigerated container 30 in which is provided a scraper and agitator 37, the solution is supplied to the bottom of the container through a pipe 24 by a pump 23 so as to displace ice crystals and solution from the top of the container on to a vibrated screen 42. Solution and small ice crystals pass through this screen and through pipe 49 to an accumulator tank 21. Large ice crystals pass from the screen to a centrifuge 45 from which any entrained solution flows to tank 21 through pipe 46. The ice is discharged through outlet 47 and is used for precooling solution in supply tank 10 from which raw solution is fed to tank 21 by pipe 15. Pump 23 withdraws solution from tank 21 through pipe 22. When the first stage of concentration has been performed, the temperature of container 30 is lowered and more ice is frozen out and so on. Alternatively, after the first stage, valve 26 is closed and valve 27 is opened in pipe 25 so that pump 23 forwards solution therethrough to another apparatus for the second stage of concentration. Scraper 37 is carried on, and driven by, the shaft 36 of motor 35 which is reciprocated on support 38 by a crank 39 so that the scraper sweeps the whole wall of container 30. In a modification, Figs. 2-5 (not shown), the scraper comprises a cylinder within and concentric with the container, extending the full depth of the container and carrying scraper blades on its cylindrical surface. The solution may be kept in tank 10 in an inert atmosphere. Examples of solutions to be concentrated are apple or other fruit juice, beer, wines, antibiotics or other pharmaceuticals, certain heat sensitive resins, coffee, milk and vegetable juices. Reference has been directed by the Comptroller to Specification 693,149.
Patent GB-965254-A (GB)
Title: Weaving-loom
IPC: D03D47/00
Filed: 1961-02-23
Abstract: 965,254. Jetlooms. MACHINEFABRIEK L. TE STRAKE N.V. Feb. 23, 1961 [Feb. 24, 1960], No. 6751/61. Heading D1E. A loop of weft is drawn into a jet loom picking nozzle 1 prior to picking. Suction through an opening 11 draws a loop of weft into channels 4, 5 and the picking is effected by air jets 2, 3;8, 9. During picking the suction through 11 is stopped and air drawn into the channels 4, 5 through an opening 12 is entrained by the picking air causing the weft to "float" in the nozzle. Either or both of the picking jets 2, 3;8, 9 may be operated. Reference has been directed by the Comptroller to Specification 915, 521.
Patent GB-1217144-A (GB)
Title: Demand regulators
Inventor: ROBERTSON DAVID MILLER
IPC: A61M16/06
Filed: 1967-02-13
Abstract: 1,217,144. Demand regulators. BRITISH OXYGEN CO. Ltd. 2 Feb., 1968 [13 Feb., 1967], No. 6756/67: Heading A5T. A demand regulator for a gas-breathing system arranged so that the regulator may readily be replaced, comprises a housing 11 for the regulator proper and having an inlet and an outlet for breathable gas, and a holder 12 having inlet and outlet conduits 15, 17 secured to it, or integral with it, the housing being adapted to be detachably mounted in the holder in an operating position in which its inlet and outlet are in fluid communication with the respective conduits. As shown, the demand regulator receives oxygen from an aircraft supply through an inlet hose 15 and provides the regulated oxygen through the outlet 17 to an aviator's breathing mask, the holder 12 of the regulator being suitable to be worn on the aviator's clothing. The housing 11, which is shown as partly separated from the holder, is provided at one end with slots 20 which removably mate with hinge pins 19 on the holder, and at its other end with two latches 24 which engage with two post members 23 on the holder. The latches 24 are spring biassed apart but, when the housing is open from the holder, the latches are held towards each other (as in Figure 3, not shown) by spring loaded stop members 31 which are actuated by the post members 23 when the housing is closed on the holder so that the latches move apart to engage under head portions 29 on the post members. The housing is opened from the holder by manually moving the latch members together. In the closed position of the housing and holder (see also Fig. 7, not shown) a spigot 33 opens a valve (34) in the oxygen inlet to the holder so that the oxygen passes through a passageway in the spigot and into the regulator proper. A rubber seal member (44) is provided between the outlet (42) from the housing and the outlet passage (40) from the holder. A coupling may be provided in the inlet hose 15 so that when the holder is worn by the aviator, he may release himself from the supply.
Patent GB-442398-A (GB)
Title: Improvements in corn starch dextrine re-moistening gums
IPC: C09J103/02
Filed: 1935-03-04
Abstract: An adhesive paste is obtained by cooking corn starch dextrin with water under elevated pressure.  The paste may be applied as a film, e.g. to paper, and dried, which film becomes tacky again on moistening.  Before cooking, the acidity of the dextrin may be reduced by treatment with a neutralizing-agent.
Patent GB-575840-A (GB)
Title: Improvements relating to electric heating elements
IPC: H05B3/16
Filed: 1944-04-13
Abstract: 575,840. Electric heating resistances. ROCHMANN, A. I. April 13, 1944, No. 6821. [Class 39 (iii)] A cartridge-type resistance heater comprises a U-shaped resistance wire element housed in cavities b,c in an earthenware insulation member a. The member is slotted where the leads enter to provide additional insulation. The unslotted end has a deep recess e, to receive the bend of the U-shaped resistance element and subsequently a cover of cement. In a modification, a second series of holes f, g, Fig. 5, may be provided to house a second resistance element for rapid heating-up. In this case a further slot separating the elements, as shown in dotted lines, may be provided. Specification 564,388 is referred to.
Patent GB-145115-A (GB)
Title: Improvements relating to wagons
IPC: B60P1/38
Filed: 1919-03-19
Abstract: 145,115. Asquith, Ltd., W., and Feather, G. March 19, 1919. Scavengers' wagons.-Wagons are arranged to carry a number of tubs &c. in tiers on endless conveyers, means being provided to maintain the tube in an horizontal position whilst on inclined portions of the conveyers. In the arrangement shown, the two upper tiers of tubs B are carried by the conveyer A and loaded through a door a', and the lower tier rests on the wagon floor, and is loaded through a door a<8>. The conveyer comprises a pair of endless chains A provided with rollers a running on fixed guides, the chain on one side of the tubs being mounted in advance of the chain on the other side. The tubs are carried by trays b provided with diagonally opposite pins b', which are mounted in the chains as shown in Fig. 6. One tray may carry two tubs, and two conveyers may be arranged side by side in the wagon. One or both chains of the conveyer may be operated by a sprocket-wheel a<5>, which is rotated by worm gearing a' and a hand-wheel a<3>.
Patent GB-514509-A (GB)
Title: Improvements in or relating to synchronising impulse separator circuits for use in television receivers
IPC: H04N5/08
Filed: 1938-03-04
Abstract: 514,509. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and FEWINGS, D. J. March 4, 1938, No. 6894. [Class 40 (iii)] The voltage across an electronic-discharge tube B, which operates on a sharply curved part of its anode-current anode-voltage curve to separate applied synchronising signals from video signals, is rendered constant despite slow variations in the video signals. The mixed signals are fed to a video amplifying valve A with a resistance C between its anode and a source of potential H.T.+, and the rectifier B in series with a resistance D, R is so connected across a portion CP of the resistance C that the anode current in the resistance C biasses back the rectifier. When the rectifier passes current at the synchronising signals, they are fed to an output SP. A choke K is in series between the resistance D and the anode of the amplifier A and between the portions D, R of the resistance there is the primary of a transformer M, the secondary of which is connected to the grid of a valve G with its anode coupled to the anode of the rectifier so that the valve applies reversed video signals to the rectifier at such strength as to cancel unreversed signals reaching the anode through the choke K and resistance D, R. According to modifications : the valve G is resistance-capacity coupled to the point N, Fig. 4 (not shown); the valve G is omitted, and the reversed signals are fed from the secondary of a step-up transformer, Fig. 6 (not shown); no reversed signals are fed to the anode of the rectifier, the choke K is omitted, and a bye-pass condenser for video signals is connected between the point N and the cathode of the amplifier A, Fig. 3 (not shown).
Patent GB-190951-A (GB)
Title: Improvements in clocks and clock movements
IPC: G04B37/04
Filed: 1922-03-09
Abstract: 190,951. Plimpton, C. B., and Plimpton & Co., Ltd., J. C. March 9, 1932. Clock framework.-In clocks the movement is secured to and spaced from the front of the, case by means which are fixed in position from the outside of the case. The apertures in the front of the case through which the. securing means pass as well as those which accommodate the arbor &c. are made in the front of the case preferably with the aid of a templet. Fig. 3 shows the, front plate 9 of the movement provided with bushes 10 into which the screws 12 from the outside of the case pass and engage. In a modification studs &c. may be attached to the front plate of the movement and pass. through holes in the front of the case and secured from the outside. The ends of these studs may be hidden by or pass through the dial plate 7.
Patent GB-730569-A (GB)
Title: Improved means for unloading vehicles
IPC: B60P1/43
Filed: 1952-03-18
Abstract: 730,569. Ramps and runways on vehicles for loading. TOTTY, R. G. March 17, 1953 [March 18, 1952], No. 6928/52. Classes 78 (3) and 78 (4). A wheeled runway 15 pivoted to the powered tailboard elevator 10 of a vehicle and provided with a curved heel portion 15a facilitates the transfer of heavy partcylindrical bodies between the tailboard and the ground. The transfer is in two stages: the body is transferred between the heel 15a and the ground with the tailboard raised so that the heel is tangential to the ground, and is transferred between the heel and the tailboard, along the runway, when the tailboard is lowered. The runway illustrated comprises a pair of angle irons 15, curved at the ends 15a and joined by members 16. The angle irons 15 are formed with lugs 12 removably connected to lugs 13 on the tailboard by a spindle 14. Lugs 19 on the tailboard may receive rods 18 by which the load is secured while the tailboard is raised or lowered. Two such runways may be provided as illustrated where two rows of test-weights for testing weigh bridges are to be loaded on to or unloaded from the vehicle. Loose plates may be placed on the ground to support the wheels 11 of the runways.
Patent GB-512152-A (GB)
Title: Improved fastening for wooden air screw blades
IPC: B64C11/04
Filed: 1938-03-05
Abstract: 512,152. Screw propellers. JABLONSKY, B. March 5, 1938, No. 6956. [Class 114] Air screws having two or more blades Àof compressed laminae or wood are secured to a metallic hub by rods or screws which have their free ends projecting over the end of the blade and provided with securing nuts whilst the inner ends are anchored in the body of the blade in a position inclined to the blade axis. A blade 3 composed of laminations 4 is secured an the metallic hub 7 by means of inclined screws 1 which have buttress threads penetrating into the blade roots and at the other end are held by nuts. The laminations at the root are further held by reinforcing rings or sleeves 6. The screw rods if desired may be formed with a taper.
Patent GB-949491-A (GB)
Title: Improvements in dispensers for liquids or powders
Inventor: KINGSBURY HENRY EDMUND ROLAND
IPC: A45D34/04
Filed: 1959-02-27
Abstract: 949,491. Portable containers; container closures. ELECTROLUBE Ltd. Feb. 18, 1960 [Feb. 27, 1959], No. 7016/59. Headings B8D and B8T. [Also in Division F2] A dispenser comprises a delivery tube 8 which slides in a bore 7 through the neck portion 5 of a body member 2. A cap 15, fitted over the the neck portion, grips the outer end of the tube 8 so that when the cap is pulled away from the body 2 the tube is pulled with it until a rib 9 engages with the inner surface 11 of the body. On further pulling out of the cap it is completely disengaged from the tube. In use the dispenser is fitted to a flexible container 1 which is squeezed to discharge liquid through the tube 8. The container 1 may be replaced by a wider bottle-shaped container. In a modification, the part of tube 8 within the container moves in a central tubular guide the lower end of which is closed and acts as a seating limiting inward movement of the tube. The end of the guide nearest the member 2 is formed with apertures through which the contents of the container can flow in to the tube 8 when it is in its fully extended position.