baber/WOPTO huggingface dataset:
Patent GB-324714-A (GB)
Title: Improvements in or relating to fans or blowers
IPC: F04D29/28
Filed: 1928-11-02
Abstract: 324,714. Saunders, N. F. T., and Associated Electrical Industries, Ltd. Nov. 2, 1928. Impellers; controlling. -A fan or blower has impeller blades with their inlet or leaving ends inclined to the radial direction; the blades are so mounted that these inclinations can be reversed to permit reverse rotation of the impeller. In the form shown in Fig. 1, the blade 1 has lugs 2 by which it is supported on a spindle. The outer part of the blade occupies an approximately radial position and is held by a U-shaped member 10 secured to the impeller shroud by a nut and bolt; the nut is locked by one side of the member 10. The blade is shown in position for clockwise rotation of the impeller; it can be moved to the position shown in dotted lines for reverse rotation by removal of the member 10. The blade can then be moved until it engages the stop 13<1>, and the member 10 is then replaced so that one limb of it engages the blade in its new position. In the modification shown in Fig. 4, tongues 14, 141 are pressed out of the material of the shroud and are used to hold the blade in position. In another modification the shroud is formed in two parts 4a, 4b, Fig. 6, and the former part 4a can be rotated relatively to the part 4b to move the blades from one operating position to the other. The movement is effected by the engagement of pins on the shroud with the blades. The operation of the blades may be obtained automatically according to the direction of rotation of the impeller. This action is obtained by supporting each blade on a pivot 6, Fig. 10, and attaching a weight 16 to the blade by means of a pin 17 working in a slot 18 in the shroud. The weight and blade will tend to take a position behind the pivot with respect to the direction of rotation. The weight may be carried by an arm outside the impeller. In another modification a cam device is used to effect a positive reversal of the blades.
Patent GB-654868-A (GB)
Title: Improvements relating to a method and apparatus for mining
IPC: E21C27/42
Filed: 1948-12-10
Abstract: 654,868. Mineral mining machines HAARMANN, A. Dec. 10, 1948, No. 32014. [Class 68 (i)] A mineral mining machine is maintained against a face by a resilient force exerted on the machine in a direction substantially at right angles to that of the movement of the machine during the cutting operation. The machine comprises a plurality of scoops 6 secured at irregular intervals to a cable which is given a reciprocatory movement so that the side of the scoop adjacent and parallel to the face and provided on the leading edge with a plurality of spaced teeth 20 cuts grooves in the face during the advance of the scoop whilst on the return movement a closely set group of teeth 38 on the trailing edge removes the mineral that is left outstanding between the grooves cut during the forward stroke. The dislodged coal is carried forward into the path of the scoop ahead which in turn carries it further forward, the pivoted plates 60 forming the rear of the scoops riding over the dislodged coal on the return stroke. The scoops are urged against the face by a guide rail 12 formed of loosely interconnected rails of a U-channel with a half cylindrical rolled section 14 welded to the lower flange of the channel to facilitate sliding. The front and rear cutting edges of the scoop may be of a horizontal V-shape and are asymmetrical so that a downward force is exerted on the cutting edge whilst the under surface approximates to a flat arc 41 in the longitudinal direction. The scoops can be formed of articulated sections and weight is concentrated low in the side walls. At the ends of each rail is a pneumatic jack 15 the cylinder of which bears against the rail and the piston rod 17 against a roof support 18 so that when compressed air is admitted to the cylinder a resilient force is exerted on the guide rail. A check lever mounted on the cylinder 15 and acting on an abutment on the piston rod limits the resilient movement of the jack but this lever can be disengaged and the jack used to advance the guide rail on which it acts so that the scoops are moved up to the new workmg face. The resilient force exerted by the ram can be transformed into a rigid thrust by a hand operated pawl engaging teeth on the piston rod.
Patent GB-692561-A (GB)
Title: Improvements in or relating to pressure indicators and recorders
Inventor: MANSFIELD WILFRED PERCIVAL
IPC: G01L9/00
Filed: 1949-12-14
Abstract: 692,561. Pressure gauges. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 8, 1950 [Dec. 14, 1949], No. 32053/49. Class 106 (ii). A fluid pressure pick-up comprises an electrically conducting body having a bore containing two oppositely positioned spaced abutments between which an electrically conducting plate, e.g. a disc or diaphragm, is arranged to move longitudinally upon reversal of the pressure difference thereacross, and a fixed electrode adjacent one of the abutments and electrically insulated from the body. The plate is adapted to be subjected on opposite sides respectively to a fluid pressure whose variations are to be indicated or recorded and a known fluid pressure, and forms with the electrode a two-state variable capacitor. As shown, a tubular stem 1 and end cap 3, insertable in a bore in the cylinder wall of an I.C. engine to be tested, provide stop abutment portions for the two positions of the metal disc 16 which is always spaced from the fixed capacitor electrode 20. The latter extends through a heat resisting electrically-insulating tube 18 into a larger diameter portion 6 where it carries a bush 23 and nut 21 acted on by a spring 24 which holds the electrode and tube in the position shown. The other end of the spring bears on an electrical connector 8a, 8. The known fluid pressure is supplied to the disc via a connector 7, holes 26 in the bush 23 and flats 25 on the electrode. Alternatively, the electrode may be tubular. The pick-up is held in operative position by a saddle member 10 engaging in an annular recess 9. The variable capacitor formed by the disc and electrode may be connected in a circuit, e.g. the tuning circuit of an oscillator or frequency discriminator, the output of which is supplied, if necessary through an amplifier, to a cathoderay tube or drum recorder arranged to operate in synchronism with the engine being tested. Recording may be effected on specially treated paper by passing electric sparks or current therethrough, or on photo-sensitive material by modulating a light source.
Patent GB-799624-A (GB)
Title: Slurry process for the manufacture of hydrogen fluoride
IPC: C01B7/19
Filed: 1956-10-22
Abstract: Hydrogen fluoride is prepared by reacting sulphuric acid with approximately a stoichiometric quantity of an alkali metal or alkalineearth metal fluoride in the presence of a chlorinated benzene as a diluent, at least 0.67 part diluent being present for each part of metal sulphate formed, the reaction temperature being maintained within the range 100-200 DEG  C., and H.F. being recovered from the gaseous product stream.  Either of the reactants may be up to 10 per cent in excess, but preferably 2-5 per cent excess acid is used.  The diluent may be mono-, di- or tri-chlorobenzene and up to 9 parts per part sulphate formed may be used. Acid-grade fluorspar, e.g. particle size 70 or 77 per cent through 200 mesh, or 4m , is slurried in amount 10-70 per cent, preferably 20-50 per cent, with 1,2,4-trichlorobenzene and fed continuously to a steel reactor equipped with an agitator and heating means.  Over 90, preferably 95-100 per cent, H2SO4 is also fed to the reactor, and any make-up trichlorobenzene.  The vapours produced are passed through a packed scrubber and diluent condenser, whence the diluent is returned through the scrubber to the reactor.  The vapours pass through a weak H.F. condenser, whence the condensate passes to a decanter from which the layer of diluent is returned to the reactor and the aqueous H.F. layer is recovered, then through the H.F. condenser, whence anhydrous H.F. is recovered, and finally through a water scrubber.  The CaSO4 slurry is withdrawn from the reactor to a settler, whence diluent is returned to make up fresh fluorspar slurry, and the CaSO4 dried with the diluent again being returned to the reactor.  The process may be operated as a batch process and may be effected under reduced pressure or pressure up to 250 lb./sq. inch.  Instead of adding acid to slurry, or mixing streams of acid and slurry, a cold premix of fluorspar and acid alone or slurried in cold trichlorobenzene may be added to a reactor containing hot trichlorobenzene.  Specification 462,131 is referred to.
Patent GB-425136-A (GB)
Title: Method of producing porous bodies
IPC: B01D39/20
Filed: 1933-11-17
Abstract: Filtering bodies or surfaces are prepared from inert substances such as quartz by adding to the heated materials coumarone resin in solution or in the form of the unpolymerized materials required to form coumarone resin and moulding under heat and pressure.  The size of the pores is regulated by the pressure, and the amount of filling material used.  It is stated that the use of the inert materials in the heated state is an important feature in the formation of a porous product.  In examples (1) Quartz sand passing a sieve of 225 mesh per square centimetre and retained by sieve of 900 mesh per square centimetre is heated to the temperature of evaporation of the solvent (benzene) which is used to dissolve coumarone resin.  From 5-30 per cent of solution is added, and the product moulded and pressed.  (2) Quartz sand as above is mixed with solvent naphtha + 3 per cent sulphuric acid, and the mixture moulded in an oven.
Patent GB-1277655-A (GB)
Title: Wet strength additives for cellulosic products
Inventor: LONGORIA JUAN
IPC: D21H17/54
Filed: 1969-06-26
Abstract: 1277655 Modified epoxy resin DOW CHEMICAL CO 26 June 1969 32237/69 Heading C3B [Also in Division D2] Water-soluble cationic resins are prepared by (A) adding a diglycidyl ether of formula in which R is H, CH 3  or C 2 H 5  and M = 0-6 or of formula in which each B is a C 12-18  aromatic radical of a bisphenol and n is 0-2, slowly to an alkylene polyamine: NH 2 -(CaH 2 aN) b -H in which a is 2-4 and b is 1-5. Addition is carried out at 25-100 C. at a ratio of 2À8-10 moles of amine per mole of diglycidyl ether. A watersoluble product is obtained which is an aminoether containing 1À2-3À0 moles of alkylenepolyamine per mole of glycidyl ether. (B) the aminoether prepared is then condensed at 30-50 C. in 0À4-1À5 moles of epichlorohydrin per amine hydrogen. Preferred diglycidyl ethers are diglycidyl ethers of polyglycols having epoxide equivalents of 305-335 and diglycidyl ethers of bisphenol A having an epoxide equivalent weight of 170-180. Examples of alkylene polyamines are triethylenetetramine and pentaethylenehexamine. Uses.-Wet strength additives for paper.
Patent GB-1281299-A (GB)
Title: Arc chamber made of a ceramic filter material
IPC: H01H9/34
Filed: 1970-07-02
Abstract: 1281299 Arc extinguishing in switches BROWN BOVERI & CIE AG 2 July 1970 [2 July 1969] 32244/70 Heading H1N An arc chamber comprises two flat perforated inner walls 1, 2, e.g. of a ceramic filter material, inclined together along the direction of travel of the arc and having outer walls 6, 7 forming wedge-shaped clearances 4, 5 which are subdivided by vertical webs (8). An imperforated slab (17), Fig. 4 (not shown) may be inserted at the top of the chamber so as to form a truncated cone with the inclined walls. The base of the chamber may also be perforated allowing fresh air to be drawn-in from the base as well as through the perforated end-wall 13.
Patent GB-904048-A (GB)
Title: Crystallisation process
IPC: C11B7/00
Filed: 1960-09-20
Abstract: Directed rearranged soyabean oil is treated to remove saturated glycerides therefrom by dissolving in the oil from 0,05% to 1,0% of a dextrin fatty acid ester, cooling the oil so that saturated glyceride crystals form and separating an uncrystallized part of the oil from the crystals.  The dextrin fatty acid ester contains at least one long chain saturated fatty acid having from 14 to 22 carbon atoms per glucose unit.  The dextrin may be further esterified with at least one short chain fatty acid having 2 to 6 carbon atoms in the acyl group.  Examples describe the use of dextrin monopalmitate, dextrin dipalmitate and dextrin monoacetate dipalmitate.  Other esters disclosed are dextrin tripalmitate and dextrin esters with myristic, stearic, arachidic or behenic acid or mixtures with each other or palmitic acid.  The acetate residue in the dextrin mono acetate dipalmitate may be replaced by a propionic, butyric, valeric or caproic acid residue or mixtures with each other.  U.S.A. Specifications 1,959,590, 2,442,531 and 2,442,533 are referred to.ALSO:Putty is prepared with triunsaturated glycerides made by fractional crystallisation of directed rearranged soyabean oil, (see Group III).
Patent GB-1175370-A (GB)
Title: Mechanical Vibration Generator.
Inventor: BODINE ALBERT GEORGE JR
IPC: B06B1/16
Filed: 1966-12-28
Abstract: 1,175,370. Vibrators. A. G. BODINE. 28 Dec., 1966, No. 32468/69. Divided out of 1,175,369. Addition to 1,132,180. Heading F2X. A vibration generator as claimed in Claim 1 of Specification 1,132,180 wherein the rotor gear and input gear are in mesh on the same side of the axis of the raceway as the point at which the rotor contacts the raceway. The particular embodiments are described in Specification 1,175,369.
Patent GB-1440225-A (GB)
Title: On-off control devices for dc electric motors
IPC: H02P7/288
Filed: 1973-07-09
Abstract: 1440225 Braking DC motors TOKYO KEIKI KK 8 July 1973 [10 July 1972] 32563/73 Heading H2J A control system for a D.C. motor 5 for stopping the motor at precise positions comprises a voltage input signal 8 indicative of the distance of travel required, which is applied to a subtracting amplifier 1 and thence to an electronic switching circuit 2 which acts like a relay with hysteresis providing an output signal of a first polarity to motor driving circuits 4, when the input from amplifier 1 is greater than a first predetermined value, the circuits 4 causing the motor to be operated, which operation is turned via a potentiometer at 6 into a feedback signal 7 which is subtracted at 1 from the signal 8, the relay-like device 2 switching off when the input falls below a second predetermined value thereby terminating the driving signal to the circuits 4, upon which termination a braking signal generator 3 provides a signal of opposite polarity to the circuits 4 and of a duration dependent upon the output from circuits 2 to cause the motor to be braked. Details of the circuits are given in the Specification.
Patent GB-757229-A (GB)
Title: Improvements in or relating to apparatus for planing, cutting or scraping road surfaces
IPC: E01C23/085
Filed: 1953-11-24
Abstract: 757,229. Roads and ways. JOHNSTON BROS. (CONTRACTORS), Ltd., and FORSDYKE, P. J. Nov. 2, 1954 [Nov. 24, 1953; Dec. 21, 1953], Nos. 32627/53 and 35533/53. Class 107. A road planing apparatus having a number of planing devices spaced apart in the direction of travel and having means for heating the road surface immediately in advance of each device, is characterized by having means on the apparatus to revivify the scraped-off material and relay it on the road. The heat supplied in advance of the leading planing device may be more intensive than that supplied by the succeeding heating devices. The planing elements may be e.g. reciprocable or rotatable blades. Apparatus having heating and planing devices, with an elevator revivifyer and spreader on a separate vehicle are disclosed. The Figure shows a combined vehicle comprising a chassis 10, heaters 11, followed by a cutting blade 14, a windrow, and further blades 15 and 16 which plane and guide the material into more heaters 12 and planing blades 18, 19 forming a windrow. A spreader blade 31 is followed by a revolving rake mixing in revivifying fluid from a reservoir 33, and then the treated material is graded by blades 34-36 and finally consolidated by the roller 37.
Patent GB-268046-A (GB)
Title: Improvements in fog penetrating lamps or lights for illuminating or signalling purposes
IPC: H01J61/96
Filed: 1925-12-28
Abstract: 268,046. Gratze, E. V. Hayes-. Dec. 28,1925. Vacuum tubes. - A vehicle, ship, and like lamp is provided with an incandescent electric bulb b and a low-pressure electric discharge tube a filled with neon or other inert elemental gas emitting light rich in red rays so that either one or both illuminants may be used. The tube a is preferably filled with neon alone or combined with other gases. In one form, the electric discharge tube a consists of a single- or double-pitch spiral enveloping the lamp bulb. In a second form, the tube a is of annular form and arranged in front of the lamp bulb. In a third form, the tube a, Fig. 2, is curved and has one open end and is arranged in the lamp bulb, the discharge taking- place between the electrode a<2> in the bulbous closed end a' of the tube a and the filament b' of the bulb b. Fig. 5 shows a sinuous tube a with closed bulbous ends arranged in the lamp bulb. The tube a may be of circular form with bulbous ends and the electric lamp filament may extend along the tube. In some cases, the filament may pass at about its centre outside the tube, e.g. into an auxiliary chamber, leaving a gap in the tube unoccupied by the filament. Thetubes a when used in motor-vehicle lamps may be rendered luminous by the intermittent current given by the magneto of the vehicle either by transforming the current through suitable coils- or transformers, condensers and oscillators, or by arranging the tubes in series or in parallel with the sparking-plugs; or the existing lighting supply may be used and transformed into a high. tension high-frequency current.
Patent GB-1097545-A (GB)
Title: A device for applying impact forces to articles
IPC: B25C1/02
Filed: 1965-07-31
Abstract: 1,097,545. Stapling and nailing tools. E. COOKE-YARBOROUGH. Oct. 31, 1966 [July 31, 1965; May 24, 1966] Nos. 32892/65 and 23230/66. Heading B4C. A device for applying an impact force such as for use in driving in nails or striking a pick comprises a hammer 6 slidably mounted in a guide member 1, the hammer being urged by a first spring 5 into contact with the nail or other article and retracted to its rest position by a second spring 7. The guide member 1 is slidable on a handle 2 and is provided with a projection. 4 to which one of the ends of each spring 5, 7 is attached the other ends being attached to the hammer 6 and a retaining pawl 9 respectively. In operation, upon pressing the front end of the guide member against a workpiece the handle is move towards the latter thereby loading the spring 5. At the end of the stroke the projection 4 abuts the end 10a of a wire 10 attached to the pawl thereby releasing it andso allowing the hammerto strike a nail; a number of nails may be mounted in a magazine which may be pressed on to the forward end of the guide member. In a modification the handle may be replaced by a sleeve adapted to slide over the guide member. The end of the guide member may be arranged to be mounted in a hollow member 22, Fig. 9, secured to a support 20 and in which a driver 31 is slidable, the driver being adapted to be struck by the hammer; individual nails are held in spring clips 28, 29 or by magnets.
Patent GB-996312-A (GB)
Title: Improvements in or relating to valves for bottling and the like machines
IPC: B67C3/26
Filed: 1963-08-20
Abstract: 996,312. Bottling. LESBRO ENGINEERING PRODUCTS (PROPRIETARY) Ltd. Aug. 20, 1963 [Sept. 3, 1962], No. 32971/63. Heading B8T. A filling valve, primarily intended for use in a rotating drum counter - pressure filling machine, comprises a gas tube 8, a liquid supply passageway leading from the main outlet via an annulus 10 and ports 11, 12 to a pressure responsive supply valve 13, a snifter outlet 24 connectable to the liquid supply passageway and a valve 23 which controls supply of gas to the gas tube and discharge from the snifter outlet. In operation, a bottle has its neck pressed against a seal 6 to lift a bell-mouthed inlet 5 and at the same time to rock a cam 34 from the position shown to an operative position whereupon a further rotation of the cam causes valve rod 26 of valve 23 to be lifted by anti-clockwise rotation of a spindle 33. Gas from an inlet 25 is thereby allowed to flow via annulus 53, passageway 64, tube 8 and a liquid responsive valve 9 into the bottle. As soon as the gas pressure has built up to equal the liquid supply pressure it causes, in conjunction with a spring 18, piston 15 of supply valve 13 to lift and allow passage of liquid to the bottle. Valve 9, described in Specification 989,998, causes cut-off of the liquid supply when the liquid level reaches the lower portion of the valve. Further rotation of the cam 34 causes lowering of valve rod 26 to the position shown in Fig. 1, so that the connection between gas inlet 25 and gas tube 8 is cut off and the annulus 10 is opened to atmosphere via snifter outlet 24. The liquid contained in the ports 11, 12 and annulus 10 being under pressure is discharged through the snifter outlet together with the excess gas above the level of the liquid in the bottle and the liquid supply valve 13 closes due to the relatively higher pressure on the inlet side thereof. Due to combined discharge of liquid and gas, the gas discharge itself is controlled and no foaming results.
Patent GB-245459-A (GB)
Title: Improvements relating to vehicle brake shoes
IPC: F16D51/56
Filed: 1925-05-13
Abstract: 245,459. Bendix Brake Co., (Assignees of Dodge, A. Y.). July 2, 1924, [Convention date]. Blocks and shoes; blocks and shoes acting on drums.-Brake shoes are arranged to overlap adjacent the anchoring points thereof whereby the extremities of the frictional part of the shoes may be brought close together. The invention is shown as applied to the brake described in Specification 236,526. and comprising shoes 3, 5 mounted respectively on fixed pivots 7, 6 and a shoe 2 jointed to the shoe 3 by a free pivot 4. The shoe 5 may also comprise a pair of jointed sections. The shoes are expanded to engage the drum by a cam 9 and are disengaged by springs 10, 11. The web parts of the shoes 3, 5 are extended beyond the ends of the braking surface and overlap as shown. For this purpose the web parts may be offset at the overlapping parts or the extended web part of the one shoe may be forked to receive that of the other shoe. The pivot 6 of the shoe 5 is disposed nearer the centre of the drum than that of the shoe 3 so as to increase its action during the reverse movement of the drum.
Patent GB-391064-A (GB)
Title: Improvements in containers for the separate storage of two components of a compound or mixture
IPC: B65D25/08
Filed: 1932-11-24
Abstract: 391,064. Partitioned bottles &c. LUTZ, J., 34, Schottenfeldgasse, Vienna. Nov. 24, 1932, No. 33225. Convention date, Nov. 25, 1931. [Classes 66 and 125 (i).] A container for the separate storage of two substances, of the type comprising two separate compartments one above the other with a central communicating passage between them and a plug normally closing said passage and adapted to be removed therefrom for mixture of the two substances, is provided with a screw cover d through which extends a rod e movable vertically therethrough and to the end of which is screwed the plug c.