baber/WOPTO huggingface dataset:
Patent GB-1062369-A (GB)
Title: Process for the chlorination of acetophenones
IPC: C07C49/80
Filed: 1966-02-15
Abstract: The invention relates to a process for the preparation of an o -chlorinated acetophenone which comprises chlorinating an acetophenone halogenated or nitrated in the nucleus in the presence of a solvent consisting of at least 50% by weight of formic acid, for example a mixture of formic and glacial acetic acids.  For the o -monochlorination the process is conducted at a temperature range of - 10 DEG  to 10 DEG  C., e.g. - 2 DEG  to 3 DEG  C., and carried out in the dark.  The starting material is preferably a previous chlorination mixture from which the precipitated o -monochlorination product has been separated and to which a further proportion of starting material has been added and the mixture further chlorinated. For the o ,o -dichlorination of the acetophenone chlorination is carried out at a temperature range of 10 DEG  to 100 DEG  C., e.g. 20 DEG  to 60 DEG  C., and preferably under irradiation, e.g. with a light source radiating in the range between 400 and 500 ma.  Examples show the preparation of di, tri, tetra and pentachloro and p-bromomono and dichloro acetophenones.
Patent GB-1334822-A (GB)
Title: Polishing machine
IPC: B24B5/38
Filed: 1972-02-11
Abstract: 1334822 Polishing SCHUMAG SCHUMACHER METALLWERKE GmbH 11 Feb 1972 [19 Feb 1971] 6588/72 Heading B3X A machine for polishing an elongate cylindrical workpiece 4 comprises at least one pair of rotating discs 11, 12, the faces of which eccentrically face each other so that their peripheries overlap to provide a working zone 7 through which the workpiece is fed, the direction of rotation being such that opposing points of the surfaces in the zone along a line between the axes of the discs have opposite directions of motion, the zone comprising a neutral zone wherein the directions of motion of opposing points are equal and opposite, and a polishing zone on each side of neutral zone wherein the directions of motion of opposed points are opposite and unequal, at least one of the discs at a radial distance corresponding to the neutral zone having an annular groove 9. The discs are of polished steel and have slightly conical surfaces and rotate in the direction of arrows 15, 16. At the neutral zone each disc has a V-shaped groove 9, 10 where the workpiece would have only rolling contact with the discs, the zones at each side of the neutral zone providing rubbing contact with the discs. It is stated that elimination of the rolling contact prevents the creation of shadow effects and roughness. The edges of the grooves may have transition zones (18, 19, Fig. 3, not shown) at a lesser angle than the sides of the groove.
Patent GB-373303-A (GB)
Title: Improvements in or relating to the manufacture of yarns or threads
IPC: D02G3/36
Filed: 1931-03-04
Abstract: 373,303. Spinning hair and like yarns. CROSSLEY, N., 22, Queen Street, Huddersfield. March 4, 1931, No. 6650. [Classes 120 (ii) and 120 (iii).] Relates to a machine for making yarns or threads comprising rovings of a springy or elastic nature, e.g. hair, around which a binding yarn is wound. The binding yarn C is wound upon a tapered tube c<1>, placed upon a tapered sleeve E mounted upon the rotating tubular spindle A. The sleeve E is preferably permanently secured upon the spindle A by a spring ring e sprung into a groove el in the sleeve and engaging balls e2 which project through holes in the sleeve. The yarn carrier comprises an eyelet D fixed to or forming part of a ball or roller bearing detachably secured to the spindle. A second winding apparatus rotating in opposite direction to the first may be provided. According to the Provisional Specification, the rovings B may be kept together before being bound by a carrying thread.
Patent GB-384652-A (GB)
Title: Mixing apparatus
IPC: B01F15/00
Filed: 1931-03-05
Abstract: 384,652. Mixing-apparatus. DIDIER, J. J. V., 25, Avenue Trudaine, Paris. March 5, 1931, No. 6856. Convention date, March 7, 1930. Void [Published under Sect. 91 of the Acts]. [Class 86.] Mixing-apparatus, more particularly for carrying out chemical reactions, comprises a chamber G furnished with a number of beater shafts I and baffles K, J beneath and over which the material must pass. Solid and liquid materials are fed by a worm B and pipe C, and gas escapes by a pipe X. The treated material is discharged by a worm L.
Patent GB-274760-A (GB)
Title: Improvements relating to water controlling devices associated with centrifugal pumps
IPC: F04D15/00
Filed: 1927-03-11
Abstract: 274,760. Fothergill, H., and Killier, H. March 11, 1927. Regulating or controlling.-A valve device particularly applicable for controlling the flow of liquid through centrifugal pumps used for extracting and discharging the condensate resulting from the condensation of steam in a condenser comprises a valve arranged in a bye-pass to the pump actuated by the pressure prevailing at the inlet and the throat of a Venturi tube arranged in the main outlet conduit. The pump 2 draws condensate from the main condenser, and discharges it through a second condenser 3 arranged to condense the exhaust steam discharged from the air ejectors and may be that discharged from the auxiliary engines. The bye-pass passage 9, 10 connects the conduit 6 leading to the boiler feed pipe to the suction side of the pump 2 and is controlled by a balanced valve 11 normally held closed against the action of a loading spring 17 by pressures derived from the Venturi pipe 5 and admitted through pipes 16, 20 to opposite sides of an actuating piston 12. When used with a pump designed to give a constant outlet pressure the connection 20 may be omitted and the lever side of the piston opened to the conduit 10. A simple lift valve may replace the balanced valve. Specification 275,351 is referred to.
Patent GB-1085730-A (GB)
Title: The production of rigid bodies of refractory materials
IPC: B22F3/11
Filed: 1966-02-16
Abstract: A mass of refractory particles such as Mo, Ta, Re, Nb, Cr, V, W, Al2O3, ThO2, MgO, ZrO2, C, WC, B4C is chemically sintered to form a rigid body by depositing W between the particles to form an interstitial bond, from a gaseous mixture of WF6 and H2, the temperature of the particles near the gas inlet being 300 DEG -650 DEG C. and near the gas outlet not exceeding 700 DEG C. and not lower than 50 DEG C. above the inlet temperature. The inlet temperature is preferably 400 DEG  -500 DEG C. and the outlet 550 DEG  -650 DEG  C. The g. equivalent ratio of H2 to WF6 is 0.9 to 30 and the refractory particles are packed in a container of the required shape to give the desired form.  The required temperature gradient is produced by heating elements surrounding the container and the gas pressure of the H2/WF6 is increased as deposition takes place. The container is removed from the sintered mass by chemical or mechanical means and metals such as Cu and Ag may be infiltrated into the sintered mass.
Patent GB-903914-A (GB)
Title: Drawing shaped articles of synthetic polyesters
IPC: D01F6/62
Filed: 1959-02-27
Abstract: Filaments, films &c. having a metallic lustre and comprising a highly polymeric ester of a dicarboxylic acid and a dihydric alcohol, said polyester being capable of being formed into filaments which when cold drawn show by X-ray pattern molecular orientation along the fibre axis, are produced by drawing filaments or films of the polyester, which has an initial birefringence of not more than 0,01, at its natural draw ratio, at a temperature below 80 DEG C., preferably 25 DEG -75 DEG C., and at a drawing speed between 2 and 17 yards per minute, the process conditions being so correlated that the draw ratio is at least 5,0.  The drawing speed is defined as the rate at which the fully drawn material is caused to move relative to the drawing neck.  The drawing temperature is defined as the temperature of the yarn &c. just prior to the point where it starts to draw.  The filaments &c. are preferably allowed to age at room temperature for 24 to 48 hours before being drawn, but may be aged for 1-2 hours at 60 DEG -120 DEG C. before being drawn.  The drawn yarn &c. may be heat stabilized at 100 DEG -200 DEG C. or over while allowing it to shrink controllably 0-35% of its original length.  The neck produced in the present invention is extremely sharp, the shoulder of the neck forming an abrupt angle greater than 44 degrees with the fibre axis. Examples are given of the drawing of polyethylene terephthalate yarns, ribbons, monofilaments and films. Specifications 578,079, 785,978, 903,915 and U.S.A.  Specification 2,352,725 are referred to.
Patent GB-771481-A (GB)
Title: Improvements in or relating to changeover circuit arrangements
Inventor: THREADGOLD RONALD
IPC: H04Q3/42
Filed: 1954-03-11
Abstract: 771,481. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Feb. 4, 1955 [March 11, 1954], No. 7064/54. Addition to 765,928. Class 40 (4). [Also in Group XL (c)] In a modification of the two-position circuit device described in the parent Specification, a positive control potential from the cathode of a conducting tube VK3, Fig. 1, is applied to the cathode of VK1 and the trigger electrode of VK2. A negative test pulse on lead 10 strikes VK2 if the control potential is present and otherwise strikes VK1. When VK1 strikes the initial surge of current into condensers C3, C4 causes a negative pulse to be transmitted over lead 11. As in the Specification referred to, a number of two-position devices may be connected in a chain to form a hunting circuit associated with a translator. Each twoposition device corresponds to a register and tube VK3 strikes when the register needs the translator. When the translator is free a negative pulse is applied to lead 10. In the associated register is not marked, tube VK1 strikes and repeats the negative pulse over lead 11 to the incoming lead 10 of the next twoposition device. Condensers C1 and C3, C2 and C5 of one stage feed the tube VK1 of the preceding stage at the beginning of a pulse and render the tube self-extinguishing. If tube VK2 strikes, indicating that a marked register has been formed, a positive signal is transmitted over lead 12. In another modification, Fig. 2, the current surge in tube VK1 is limited by resistors R4, R5 and by a condenser C6 and a resistor R4 in the next stage.
Patent GB-201958-A (GB)
Title: An improved automatic pistol
IPC: F41A3/64
Filed: 1922-03-10
Abstract: 201,958. Hazelton, G. March 10, 1922. Breech actions, sliding breech-block. - The breech-body A of an automatic pistol is formed with two parallel cylindrical bores 1, 2 united by a slot. The breech-block R slides in the upper bore and on the removable barrel B, and at the front has a depending lug 4 engaging a spring plunger P sliding in the lower bore. The walls of the upper bore, are machined away at the front upper portion to provide for the assembling of the barrel and breech-block. The barrel B is fastened to the body A by a lug 7 projecting downwards at its rear end into a groove in the body. The barrel and breech-block are assembled from the front by a sliding and turning movement.
Patent GB-412353-A (GB)
Title: Improvements relating to sparking plugs
IPC: H01T13/46
Filed: 1933-03-09
Abstract: 412,353. Sparking-plugs. HOPPS, B., and LODGE, A. M., St. Peter's Road, Rugby. March 9, 1933, No. 7160. [Class 7 (iv).] An insulated metal ring or sleeve a provides a third terminal adjacent to the gap between the ordinary terminals b, f. Mica or ceramic insulation may be used. The central electrode may be larger in diameter at the outer end of the plug. Specification 135,031, [Class 7 (iv)], is referred to.
Patent GB-198793-A (GB)
Title: Improvements in circular knitting machines
IPC: D04B9/06
Filed: 1922-03-10
Abstract: 198,793. Harris, A. F., and Owen, S. March 10. 1922. Circular machines; needles.- Articles such as stocking legs knitted in a continuous string are divided off by transfer courses in which loops on cylinder transfer needles are placed on adjacent dial needles the wales in those courses being thereby reduced to the number of quills employed subsequently for running-on. Extra transfer courses may be worked for purposes of ornamentation. A group of transfer needles sufficient for the reduction required is placed in the cylinder; each needle is recessed at 66 to receive the free end 67 of a loop-receiving hook, the lower end of which is riveted at 69 to the stem 60. The butts 72 are longer than those of the ordinary needles and are operated by a supplementary cam 80 mounted on a radial sliding rod 83 and pushed in, for transfer purposes by an arm 91 which is carried round with the cams and is controlled through intermediate levers from a disc on a pattern controlled plunger. This disc also controls the position of the dial and cylinder stitch cams. When the transfer needles rise on the cam 80, their loops are expanded and are received on shoulders or stops 71. A dial needle then enters one loop and the needle 60 retires leaving its loop on the dial needle.
Patent GB-1403123-A (GB)
Title: Gas burner
IPC: F23D14/70
Filed: 1973-02-14
Abstract: 1403123 Gas turbine engines - exhaust reheat equipment GENERAL ELECTRIC CO 14 Feb 1973 [22 Feb 1972] 7233/73 Headings F1G and F1L [Also in Division F4] A gaseous fuel burner for heating a flow of exhaust gas from a gas turbine comprises baffles 59 attached along the exterior of a burner pipe 49 on opposite sides of the axis thereof for directing a portion of said flow into a recirculating pattern downstream of pipe 49 which has flame stabilization fuel ports 71 for ejecting gaseous fuel into said recirculation pattern thereby forming a first combustible mixture, and main fuel ports 69 for ejecting gaseous fuel laterally beyond the recirculation pattern into the remaining portion of said flow thereby forming a second combustible mixture, ignition of which is effected by ignition of said first mixture. A burner grid, Fig. 1, for location in a gas turbine exhaust duct to supply heat for a heat recovery steam generator comprises a plurality of said burner pipes 49 extending horizontally above a flow distribution screen 19. The horizontal baffles 59 have expansion slots 61 and the main fuel ports 69 are provided in pairs, one port on either side of a vertical plane through the pipe axis and at 60 degrees from said plane with respect to the pipe axis, the pairs of ports 69 alternating along the length of the burner pipe with pairs of stabilizing ports 71, located one port on either side of said plane and at 30 degrees therefrom with respect to the pipe axis. An apertured fuel supply and distributing pipe 45, Fig. 3, is coaxially located in each pipe 49. Pilot burner pipes 25, Fig. 1, each have an igniter 29, a pair of divergent wings 31 with air holes 35, and a row of fuel outlet holes 39 in the pipes 25.
Patent GB-1534915-A (GB)
Title: Device for holding a female section in a mould for making a concrete element
IPC: B28B23/00
Filed: 1976-02-24
Abstract: 1534915 Supporting inserts in moulds ETABLISSEMENTS LAGESSE & NEYMARC 24 Feb 1976 [11 July 1975] 07271/76 Heading B5A A hollow beam or female member 1 (Fig. 3) or 1a (Fig. 6) to be embedded in concrete is held against a mould wall 6 by a horse-shoe pin 9/9a having wavy limbs 10/10a and 11/11a defining bends 15/15a and 16/16a that engage in apertures 12 in the mould wall. The pins engage the wall 6 by the apertures 15/15a while the beam or member 1/1a is slid into place and are then placed in the Fig. 3 or 6 position for clamping. After moulding, the projecting limbs are broken off at dimples 17/17a, or are removed by pincers . The pins comprise spring steel or moulded plastics. The member 1 (Fig. 3) includes a hollow 5 opened to the face of the embedding concrete member by removal of an extruded PVC or adhesive aluminium foil cover plate 7. In Fig. 6, a bar 70 covers an opening 4, and is removably held in place by elastic flanges 71.
Patent GB-307627-A (GB)
Title: Improvements in boat raising and lowering gear
IPC: B63B23/04
Filed: 1928-03-08
Abstract: 307,627. Spanner, E. F. March 8, 1928. Davits. - Luffing davits, such as those described in Specification 270,163, which run on a pair of straight parallel inclined trackways from an inboard to an outboard position are provided with a brake-controlled barrel 4 over which the falls 2 make one or more turns before passing over a fairlead 5 on the tracks to a winch. This arrangement ensures that during the outboard movement of the boat and davit, the former does not move relatively to the latter until the depending part 6 of the brake arm is pressed back by a releasable stop 14 which immediately after arrests the davits when the arm 6 abuts against the fixed stop 13 on the latter. The davit is again arrested at its full outboard position by the stop 15 which releases the brake and allows the boat to be lowered to the water. During hoisting operations, the davit is prevented from ascending the track until the boat is at full deck level by inserting a pin 16 behind the davit.
Patent GB-242147-A (GB)
Title: Improved apparatus for the production of yoghurt
IPC: A23C9/12
Filed: 1925-03-18
Abstract: 242,147. Axelrod, A. March 18, 1925. Bacteria, cultivating. -Yoghurt is produced by adding yoghurt ferment to milk in a vessel 9 which is then enclosed by or placed inside an annular hotwater container 2 within a packed casing 1. As shown, the glass milk vessel 9 stands in the recess 3 of a plate 6 supporting the hot-water container, the plate and container being arranged in heatinsulating packing 7 within the casing 1 which is provided with a lid 8 also packed with heatinsulating material. Boiling water is introduced into the container 2 by the opening 4, an air escape being provided by a hole 5. In a modification, the vessel 9 rests on a base and the casing 1 and water container 2 are constructed as a bell to fit over the milk vessel and rest on the base.
Patent GB-851045-A (GB)
Title: Curing synthetic elastomers
Inventor: DAVEY WALTER CECIL
IPC: C08L9/00
Filed: 1956-03-09
Abstract: Copolymers of butadiene and an alkyl acrylate or an alkyl acrylate having an electrophilic substituent in the alkyl group are cured by heating in the presence of a basic oxide or hydroxide of a polyvalent metal and a neutral or basic organic hydroxy compound.  The copolymers may contain 5-60% by weight of monomers of alkyl acrylate which preferably contains up to 4 carbon atoms in the alkyl group. Suitable negative substituents in the alkyl group are chlorine, bromine, cyano, nitro-, or sulphonic groups. The copolymer may contain up to 30% of a third monomer containing a vinylidene group such as methyl methacrylate, vinylidene chloride, methyl isopropenyl ketone, methyl vinyl ketone, acrylonitrile and styrene.  The copolymers are prepared by emulsion polymerization using a persulphate or redox catalyst. The preferred organic hydroxy compounds are those which will dissolve at least 0,1% of the basic oxide or hydroxide used and are preferably aliphatic or have a predominantly aliphatic nature, preferably have a boiling point above the curing temperature, and include starches, glucose, sorbitol, mannitol, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, glycerol, tetramethylol cyclohexanol, transquinitol, 1,5-bis(2-hydroxyethyl) naphthalene cyclohexanol, benzyl alcohol and lauryl alcohol.  It is used in an amount of 1-15% by weight of the copolymer.  The basic oxide or hydroxide is preferably one of a divalent metal such as an alkaline earth metal and is used in an amount of 5-10% by weight of the copolymer.  Curing times are 30 minutes to 4 hours at about 150 DEG C.  Carbon black or titanium dioxide fillers may be added but acidic ingredients should be avoided.  Specification 808,913 is referred to.
Patent GB-138750-A (GB)
Title: Improvements in or relating to the manufacture of curtain rod brackets
IPC: A47H1/022
Filed: 1919-03-25
Abstract: 138,750. Evered & Co., Read, E. T., and Suckling, A. H. March 25, 1919, Clip, ring, and like brackets. - Relates to curtain-rod brackets of the kind in which a ferrule screws on to a pommel or projection on the face of a fixing-plate or on a side arm thereof. According to the invention, the pommel b is made cup-shaped, and is secured to the fixing- plate c by making an angular hole b', Fig. 5, in its closed end and clinching over the edges of the hole a tubular projection c<2> or a series of projecting tongues formed on the fixing-plate. The square hole in the part b enables it to be suitably held or moved whilst the external screwthread is being formed, prior to the attachment of the parts b, c.
Patent GB-1095891-A (GB)
Title: Improvements relating to data sorting devices
Inventor: LEMAY CHRISTOPHER ARCHIBALD GO
IPC: G06V10/75
Filed: 1964-02-21
Abstract: 1,095,891. Learning circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 22, 1965 [Feb. 21, 1964], No. 7455/64. Addition to 1,034,814. Heading G4R. The data sorting-device of Specification 1,034,814 is modified so as to subject the applied pattern to a further, separate succession of tests. Patterns are stored for this purpose if, as a result of the succession of comparisons between the input pattern and the patterns stored, a similarity is detected which does not differ by more than a certain amount from the similarity obtained in the immediately preceding one of the succession of comparisons.
Patent GB-278652-A (GB)
Title: Apparatus for taking cinematographic pictures
IPC: G03B19/18
Filed: 1927-03-18
Abstract: 278,652. Bogopolsky, J. Oct. 9, 1926, [Convention date]. Kinematograph apparatus. - The casing of a motor-driven camera comprises a box containing one central partition which wholly supports the motor, transmission mechanism, and film-engaging parts, and forms two compartments having separate means of access and housing respectively the motor and its gear train, and the filmengaging members, optical system, &c. ; claw-feed mechanism capable of use with either central or marginal film perforations, means for indicating, audibly and visibly, the length of film fed, means for controlling the motor, and view-finding means, may be provided. As shown, the chamber 4, Fig. 1, on one side of a partition, contains spools 5, 5<a>, a gate 8, a feed sprocket 6 with pressure rollers 17 - - 20 carried by arms 21, 22 mounted on a pivot 23, a drum shutter 9 in an enclosure 3, and a claw-feed mechanism 10. The other chamber, Fig. 3, contains a spring motor 27, the barrel of which carries teeth 27a driving respectively the sprocket 6 on the shaft of a pinion 28, the shutter 9, through the pinion 28 and gears 29, 30, and the claw-feed through gears 31, 32. A flywheel 33 carrying pivots 36, 37 for weighted arms 34, 35 connected by a spring 40, and forming a centrifugal governor turning within a ring 55, is mounted on the shaft of the gear 32. The motor is controlled by a push 43 operating a lever 41 having a yielding member 41<a> engaging a spiral spring 45<a> carried by the pinion 30. A pin 51 on the motor barrel operates a spring pawl 49 to rotate a film-feed indicator 46 and give a visible and audible indication. The motor shaft carries a tooth 65 which rotates a star-wheel 66 having an arm 67 serving to stop the motor after the useful power of the spring is exhausted; the wheel 66 carries visible indications of the degree of tension remaining in the spring, and a spring 69 engaging the wheel 66 gives an audible indication, and may also serve as a film-feed indicator. The claw-feed mechanism comprises a member 10 pivoted at 11 and operated by a crank disc 13. The member 10 carries two claws at its upper end to engage marginal film perforations, and a central claw on a yielding member 59 to engage central perforations; if the film has marginal perforations, a sliding member 51 is moved vertically to prevent the central claw from engaging the film; if the film has central perforations and no margins, the member 61 is lowered so that the central claw is operative, and the other claws move idly. The view-finder comprises a lens 52, a sightaperture 56 for direct viewing, and a mirror 53 which may be turned into position to reflect an image through a viewing-aperture 57.