baber/WOPTO huggingface dataset:
Patent GB-1001838-A (GB)
Title: Olefin copolymers
IPC: C08F230/08
Filed: 1963-04-17
Abstract: Substantially linear, amorphous, vulcanizable, high molecular weight copolymers containing monomeric units homogeneously distributed along the macromolecular chain comprise ethylene, one or more olefins of the formula R-CH = CH2 in which R is a Cl to Cb alkyl group, and a compound of the formula <FORM:1001838/C3/1> where R1 and R2 are the same or different alkenyl groups containing 2 to 6 carbon atoms, and R3 and R4 are hydrogen, aliphatic, cycloaliphatic or aromatic groups, or as R1 and R2. The copolymers are made by polymerizing a mixture of the monomers in the presence of a halogen-containing catalyst consisting of the reaction product of a vanadium compound, an aluminium or beryllium organometallic compound or a lithium-aluminium complex.  The polymerization is preferably effected between 0 DEG  C. and - 80 DEG  C.  The organo-aluminium compound may be complexed with a weak Lewis base such as an ether, thioether, tert-amine, or trisubstituted phosphine.  The alpha-olefin may be propylene, or butene-1.  The silicon-containing monomer may be dimethyl divinyl or diallyl silane, tetravinyl silane, tetrallyl silane, diphenyldiallylsilane, ethyldiallylsilane, diallyldiiso - propylsilane, or diallyldi - sec - butylsilane. The polymerization is preferably effected in a hydrocarbon or halogenated hydrocarbon solvent or diluent.  The catalyst is preferably preformed. The Specification contains long lists of suitable catalyst components. Those exemplified are VCl4 and aluminium diethylmonochloride, vanadium triacetylacetonate and aluminium diethylmonochloride, VCl4 and aluminium trihexyl, and VCl4 and diethylberyllium.  The copolymer is vulcanized by conventional techniques.
Patent GB-731921-A (GB)
Title: Improvements in or relating to trigger arrangements for compressed air weapons
IPC: F41B11/646
Filed: 1951-06-26
Abstract: 731,921. Air guns. WALTHER, F. June 26, 1951 [June 27, 1950], No. 15165/51. Class 119. The trigger mechanism of an air gun comprises a pivoted sear 1 having a nose 4, for engaging a nose 5 of the rod 6 of the air piston, and a nose 10 for engaging a sear lever 2, the sear pivot 7 being located to lie wholly or partly within a recess 6a in the rod 6 when the latter is cocked. The arrangement is such that the effective radius of the nose 10 about the sear pivot 7 is more than twice the effective radius of the nose 4 about the sear pivot. The sear shown is under the action of a spring 8 and has a nose 9 which is engaged by the rear end of the rod 6 to re-cock the sear. The sear lever 2 is of U-section, is under the control of a spring 18, and is slotted for the passage of the sear and of the trigger 3. By the arrangement above described the spring 18 is able to return the sear lever fully to the sear engaging position if the trigger is released after a partial pull. The mechanism is housed in a housing 20 which can be inserted from the rear into the compressed air cylinder.
Patent GB-1096178-A (GB)
Title: Improvements in or relating to interior rear-view mirrors for motor vehicles
Inventor: WEBER HEINRICH
IPC: B60R1/04
Filed: 1965-04-09
Abstract: 1,096,178. Vehicle rear view mirrors. (B) BLEWA SCHLEIZ, VEB. April 9, 1965. No. 15199/65. Heading B7V. [Also in Division E2] A reversible night or day rear view mirror 2 has a ball 4 which may be pressed into the socket in an elastic plastic base 5 recessed at 12, Fig. 3, and slotted at (13), Fig. 2 (not shown) to permit expansion of the socket 7. The arm 3 of the mirror is received in a channel 9 defining an edge 14 about which the mirror when struck may lever itself out of the joint. The base clamping screw 11 may be turned in the roof frame 6 to adjust the clamping action of the joint.
Patent GB-627567-A (GB)
Title: Improvements in yarn tensioning apparatus
IPC: B65H59/22
Filed: 1946-05-20
Abstract: 627,567. Yarn tensioning and guiding devices, DEWAS, R. May 20, 1946, No. 15231. Convention date, March 26. [Class 120 (ii)] Yarn tensioning apparatus comprises one or more disc tension devices, each having an apertured lower disc revoluble on a ring support, a fixed spindle with its lower end above the upper plane of the lower disc, an apertured upper disc arranged for free rotation about the spindle, means limiting the upward movement of the upper disc and means for guiding the yarn in a straight line between upper and lower discs When a series of tension devices are arranged side by side, the stationary ring supports 5 may be mounted on a common bracket 7 associated with a support 2, or the ring supports may be upheld by the support 2 through vertical rods also serving to limit the amount of transverse movement of the yarn a. Stop fingers 17 may be hung from the support 2, when a bracket 7 is used. The ring supports 5 may be provided with shock absorbing material upon which the lower discs 4 rest. The upper discs 3 may be weighted by loading rings 8 or by springs and, in order to limit the amplitude of the jumps of the upper discs 3 as the yarn passes beneath them stop rods 11, adjustable in height, are mounted, either on the support 2 or on the spindles 1. A U-shaped guide 31 is provided for the yarn a as it leaves the tension discs and a guide comprising two slotted plates 19, 20, spaced by a plate 29, is located in front of the discs. A recess 26, Fig. 9, cut from the plate 20, terminates in a slot 28 and a recess 22 in the plate 19 leads to a slot 25, which may be so arranged as to allow the yarn a to pass straight through the guide, or to bend the yarn to reduce kinking. When two parallel series of tension devices are employed, a yarn guide may be used in which the rear plate has two recesses and two slots.
Patent GB-405701-A (GB)
Title: Improvements in pneumatic tyre rims
IPC: B60B25/04
Filed: 1932-08-30
Abstract: 405,701. Vehicle wheels. HEGGADON, R. T., Kigbeare, Okehampton, Devon. Aug. 30, 1932, No. 15244. [Class 144 (ii).] To facilitate tyre-manipulation, a rim for use with wire-edge straight-side tyres comprises a detachable side-flange B secured by a split ring C, both bead-seating portions of the rim being of conical form.
Patent GB-1369953-A (GB)
Title: Weft receiver for shuttleless looms
IPC: D03D47/23
Filed: 1973-03-30
Abstract: 1369953 Shuttleless looms ROCKWELL INTERNATIONAL CORP 30 March 1973 [24 May 1972] 15312/73 Heading D1E A weft receiver 11 comprises a hooked member 21 whose hook faces rearwardly cooperating with a spring 26 attached thereto for trapping and tensioning the weft and having a rib 37 on its upper surface to deflect warp threads, the member 21 being mounted on a body 13 having an edge 16 which extends downwardly to be flush with the tape 10 for deflecting lower warp threads. The spring 24 has a lip 36 extending under the member 21 whose end portion 22 is curved to guide the weft under the spring and into the hook 33.
Patent GB-153600-A (GB)
Abstract: 153,600. Booty, P. C. P. Nov. 10, 1919, [Convention date]. Valves and cocks for.-A regulating device for controlling the valve of a lubricator has a stem slidably mounted in a cylindrical casing and is provided with an eccentric member for locking it to the casing in its adjusted position. The stem 17 has a manipulating knob 18 and carries three disks 22, 23, 24 adapted to slide in a casing 1. The centre disk is mounted on an eccentric bearing and is prevented from rotating by a pin 26 engaging a slot 27 so that, when the knob is rotated, the disks are wedged against the sides of the casing. The lower end of the spindle has a hole 28 for attachment of the control rod or cable and the casing has a screwed ferrule to receive the end of a protective sheathing. The upper end of the casing is closed by an adjustable screwed plug 15 which acts as a stop and is held in its adjusted position by a spring arm 33 engaging the notched edge of a flange on the plug.
Patent GB-782943-A (GB)
Title: Improvements in and relating to the removal of heat exchange medium from heat exchange systems
Inventor: BELL ALAN
IPC: F22B1/04
Filed: 1955-05-27
Abstract: 782,943. Cleaning pipes. FOSTER WHEELER, Ltd. May 28, 1956 [May 27, 1955], No. 15390/55. Class 99(2). Traces of alkali metal, e.g. sodium or a sodium potassium alloy, remaining in a heat exchange system after the bulk of the metal, which forms the heat exchange medium, has been drained off are removed by passing dry superheated steam through the system while the temperature within the system is maintained at a value above the melting point of the alkali metal and the condensation temperature of the steam, the steam reacting with the metal to form hydrogen, which is vented from the system, and metallic oxide which is subsequently washed out with water. The steam is passed into the system, which is maintained at a temperature above the steam condensation temperature by electric or steam heaters, at its lowest point together with an inert gas such as nitrogen or argon and the resultant mixture of steam, inert gas and hydrogen is removed from the system at its highest point and led to a condenser, the inert gas and hydrogen being vented through an orifice. A proportion of the inert gas and hydrogen mixture may be burnt as an indication of the extent to which the alkali metal has been converted, the rate of supply of inert gas being increased as the conversion progresses.
Patent GB-784610-A (GB)
Title: Process for preparing -ß-ketoacetals
Filed: 1954-05-25
Abstract: Dimethyl acetals of b -keto aldehydes, which aldehydes have the general formula R.CO.CH(R1)CHO, wherein R is an alkyl, vinyl or aralkyl group and R1 is hydrogen or an alkyl group, are prepared by adding an alkali metal enolate of the b -keto aldehyde with mixing to an anhydrous solution of such an amount of anhydrous hydrogen chloride in methanol that the pH of the mixture is maintained below 1 throughout the mixing, allowing the substantially anhydrous mixture to react at that pH at a temperature not above 25 DEG  C., and thereafter raising the pH of the reacted mixture to from 6 to 7 by the addition of an alkali metal alkoxide which may be dissolved in an organic solvent and maintaining this pH in the mixture while recovering therefrom the resulting dimethyl acetal.  The reaction is preferably carried out in methyl formate.  The acetals may be recovered by adsorption but normally by distillation.  The alkali metal enolates used as starting materials may be prepared by reacting a suitable ketone with an alkyl formate, such as methyl or ethyl formate, and an alkali metal or alkali metal alkoxide; preferably there is used methyl formate in excess whereby there is formed a slurry of the alkali metal enolate in methyl formate.  A temperature of 15-25 DEG  C. is preferred and an inert solvent may be present. Specified ketones are acetone, methyl ethyl ketone and methyl vinyl ketone. In examples: (1) sodium formyl acetone is prepared by reacting sodium or sodium methoxide with acetone and methyl formate and is then added in methanolic solution progressively to an anhydrous methanolic solution of hydrogen chloride with stirring at 15-25 DEG  C.; the reacted mixture is neutralized with sodium methoxide in methanol to pH 6.0-6.5 whereupon after filtration the solvent is distilled off and the residue distilled under reduced pressure to yield the dimethyl acetal of b -keto butyraldehyde containing minor amounts of the b -keto vinyl ether; (2) as in (1), the enolate being in the form of a slurry prepared by adding acetone to a refluxing mixture of sodium methoxide and excess methyl formate. It is stated that substantial amounts of the vinyl ethers and triacyl benzene are formed if, in the process of the invention, ethanol replaces the methanol, the alcoholic hydrogen chloride is added to the enolate or the pH is not adjusted to 6-7 in the neutralization. The dimethyl acetals are useful in the synthesis of di-b -unsaturated aldehydes and pharmaceuticals. U.S.A. Specifications 2,091,373 and 2,570,713 and Japanese Specification 177,821 are referred to.
Patent GB-549628-A (GB)
Title: Improvements in or relating to control systems for stage lighting and the like
IPC: G05F1/14
Filed: 1941-12-01
Abstract: 549,628. Control systems for lamps; inductances ; resistances. IGRANIC ELECTRIC CO., Ltd. Dec. 1, 1941, No. 15452. Convention date, Dec. 7, 1940. [Classes 38 (ii) and 38 (iv)] [Also in Group XXXVI] Lighting circuits 1, have three or more potentiometers 11, 12, 13 whereby various illumination intensities may be preset, and corresponding fading potentiometers 5, 6, 7 determining the voltage applied to the presetting potentiometers, whereby one preset condition may be substituted for another. The operating means for the potentiometers 5, 6, 7 are interlocked by mechanism shown for example in Fig. 2 whereby actuation of an operating member such as 5c from its minimum voltage position to its maximum to establish the circuit condition preset by potentiometer 11 will restore the operating member 6c and its potentiometer to the minimum voltage position. The arrangement shown comprises a taut cord co-operating with pulleys on the operating members, so as to permit only one operator at a time to travel its full distance, which may be replaced by equivalent means, such as incompressible fluid in a closed container. Means may be added, such as a slide with one aperture, to prevent actuation of more than one operating member at a time and to prevent reverse movement of any operating member except as accompaniment to actuation of another. The potentiometers may be resistive or inductive. The presetting means may control the lighting circuits through controllers 3, 4 as in Specification 538,575. The presetting potentiometers are connected to these controllers through transformers the secondary windings of which are in series.
Patent GB-259513-A (GB)
Title: Improvements in pivots for window sashes or the like
IPC: E05D7/08
Filed: 1926-06-19
Abstract: 259,513. Thompson, J. O. June 19, 1926. Disc and like plate hinges; hinges readily separable about hinge pin.-Window sashes and like articles are pivotally mounted by means of a pair of attachment plates 1, 6, one of which has a projecting pin 2 for engagement with an opensided socket on the other plate, the pin being formed with a lateral projection with shoulders 4 to engage the surfaces 5, 7 adjacent to the socket as the sash is rocked in is pivots. The socket plate 6 has a slot which is cruciform in shape, as shown, whereby the hinge parts may be readily separated after the plates have been secured to the window frame and sash respectively.
Patent GB-354860-A (GB)
Title: Improvements in the manufacture of plastic materials
IPC: C08K5/00
Filed: 1930-05-20
Abstract: Plasticizers such as sulphonamides, sulphonarylides, diphenylol propane, alkyl phthalates, triacetin, resorcin diacetate, organic phosphates and esters of aromatic sulphonic acids are applied, e.g. by spraying to cellulose derivatives (examples given), which may be warm, in sheets, flakes, or powder form in a liquid vehicle which is a non-solvent for the cellulose such as diethyl ether, benzene, toluene, ethyl or methyl alcohol, benzene-alcohol, and which is removed by evaporation and in some cases centrifuging before the product is worked.  Resins, stabilizers such as urea and its derivatives, pigments, dyes, fillers and "non-inflammators" such as mineral phosphates, halogenated phenols and aromatic amines and their derivatives such as tetrachlorethyl acetanilide, and the brominated acidylated aromatic amines forming the subject matter of Specification 319,073, [Class 70, Indiarubber &c.], which act also as plasticizers may be incorporated with, before, or after the plasticizer.  Dicyandiamide may be added to counteract any free halogen.  In one method a solution or suspension of the plasticizer is added to a powdered cellulose compound and the whole is sprayed, e.g. into a heated atmosphere.
Patent GB-570016-A (GB)
Title: Improvements in or relating to crankshafts and the method of securing flywheels thereto
IPC: F16D1/076
Filed: 1943-09-23
Abstract: 570,016. Securing fywheels to shafts. ELLIS, E. D., and FOWLER & CO. (LEEDS), Ltd., J. Sept. 23, 1943, No. 15583. [Class 80 (ii)] A flywheel 9 is secured to a flange 1 on the end of a crankshaft 2 by bolts 10 which pass through plain holes 11, 12, in a flange 8 on the flywheel and in the flange 1 and screw into an annular ring 3 formed in two or more parts. As shown, the ring parts 3 are secured to the flange 1 by screws 4, the heads of which pass through clearance holes 7 in the flange 8.
Patent GB-420418-A (GB)
Title: Sewing machine frame
IPC: D05B69/12
Filed: 1934-05-25
Abstract: 420,418. Sewing-machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(Singer Manufacturing Co.; Elizabeth, New Jersey, U.S.A.) May 25, 1934, No. 15611. [Class 112] The depending side and end walls of a sewing. machine bed-plate are recessed at 18 to receive the motor. An extension-plate 58 is pivoted to the bed-plate. The loop-taker and the feed rock-shafts are carried by bearing supports which are die cast with the bed-plate walls. The loop taker 41 is disposed within a cavity formed by the throat plate 43 and a frame extension 44.
Patent GB-696560-A (GB)
Title: A machine for planing, polishing or scrubbing of floors
IPC: A47L11/206
Filed: 1951-07-02
Abstract: 696,560. Floor planing and polishing; powerdriven rotary brushes and pads. EBERSOLD, P. July 2, 1951, No. 15621/51. Classes 19, 60, 138 (i) and 145 (i). A machine for planing, polishing, or scrubbing floors comprises a carrier 8 supporting floortreating elements 9 at its outer part and driven by an eccentric 6a disposed inside the carrier and rotated direct by the rotor 2 of an etectric motor, the arrangement being such that all points on the outer part of the carrier move simultaneously in circular paths of radius equal to the eccentricity of the eccentric 6a. The latter is formed on the hub of a fan 6 driven by the rotor 2 for sucking shavings from the floor through holes 8a in the carrier 8 and into a bag 15 or a rigid container. A ball-race 7, 7a, 7b is provided between the eccentric 6a and the carrier 8 which may be of circular, polygonal, or elongated form and is spaced from the lower edge, of similar form, of a casing 1, Fig. 2. The floor-treating elements may consist of a plurality of tufts of steel wool soldered on discs 10 that are attached by screws to the carrier 8 adjacent a cylinder 14 of cardboard having notches 14a in the end. A disc of leather and cardboard having carborundum grains attached by an adhesive may be fixed to the lower surface of the elements 9. Alternatively, the floor-treating element may comprise a strip of steel coiled in a spiral around the cylinder 14. The strip may be serrated at its lower edge and formed with holes, which may be bushed, to provide passages for the air-entrained particles. As further alternatives, the floortreating element may comprise a waxed flannel cloth, a dry woollen cloth, or brushes for use with soapsuds or water. In the latter event, liquid and dirt residue is sucked into the bag 15. The machine is formed with a guide rod 13a and a handle 1b.
Patent GB-801824-A (GB)
Title: Improvements in or relating to artificial teeth and dentures made therefrom
Inventor: HAWTIN PERCY
IPC: A61K6/083
Filed: 1955-05-31
Abstract: Artificial teeth and dentures are made from methyl methacrylate polymers by a process which involves dispersing in an aqueous medium, e.g. an aqueous starch solution, methyl methacrylate and from 1 to 10 per cent by weight thereof one or more of the monomeric cross-linking agents p-divinyl benzene, diallyl phthalate and diallyl maleate to form liquid monomeric globules which are heated to form solid particles of partially polymerized solvent soluble copolymers, and thereafter immersing them in a liquid monomer, which is selected from the monomeric starting materials, in a weight ratio of between 1 : 1 and 1 : 4 to form a dough-like mass which is then hot-moulded into artificial teeth and dentures, whereby polymerization is completed. If desired the partial polymerization step may be accelerated by a catalyst such as benzoyl peroxide.
Patent GB-455512-A (GB)
Title: Improvements in or relating to the control of centrifugal fans, pumps and the like
IPC: F04D29/46
Filed: 1935-05-29
Abstract: 455,512. Centrifugal pumps. DAVIDSON & CO., Ltd., and WHITMORE, J., Sirocco Engineering Works, Belfast. May 29, 1935, No. 15666. [Class 110 (i)] To improve the efficiency of a centrifugal fan or pump under light loads, fluid derived from the discharge side of the impeller is directed vortically through a volute surrounding and in communication, with a series of nozzles into the axially entering fluid. An adjustable plate 10 in the discharge outlet enables a controlled quantity of pressure fluid to be directed through a conduit 8 and discharged tangentially between a series of blades 6 into the inlet stream. The blades 6 may be adjustable in inclination or they may be replaced by a series of nozzles. The plate 10 which normally closes the entrance to the conduit 8 is moved by a lever 13 working over a locking quadrant. In a modification the free end of the flap 10 is connected to a curved deflector plate linked to the casing and moving with the plate. The fan outlet and the conduit 8 may alternatively be controlled by separate valves. The conduit 8 may be of gradually diminishing cross-section where it surrounds the blades 6.
Patent GB-1039050-A (GB)
Title: Improvements relating to storage tanks
Inventor: WARDALE JOHN KEDGWYN STEVENSON
IPC: B65D90/08
Filed: 1964-04-15
Abstract: 1,039,050. Welding by fusion; making storage tanks. WHESSOE Ltd. May 28, 1965 [April 15, 1964], No. 15682/64. Headings B3A and B3R. In a storage tank having a flat circular bottom and a vertical cylindrical shell wall each formed from numerous steel plates butt-welded together, the joint between the wall and the bottom is constituted by members each of such cross-section as to present two flanges at right angles to one another, the flanges being respectively butt welded to the lowermost shell plates and to the outer periphery of the bottom plates. The members are angle or inverted-T-sections formed by rolling, extruding or drawing or fabricated by welding, the welds being such as to be capable of being X-rayed. A ring of outwardly projecting plates may be joined to the underside of the angle or T-sections by fillet welds.
Patent GB-754491-A (GB)
Title: Improvements in flexible tubing
IPC: B29C53/84
Filed: 1954-05-27
Abstract: 754,491. Flexible tubes. COMPOFLEX CO., Ltd., and MOSELEY, J. April 7, 1955 May 27, 1954], No. 15697/54. Class 99(2). In an armoured hose for conveying petrol, oil, acid or liquid foodstuffs, a layer of supported polyvinyl chloride, i.e., cloth coated on one or both sides with a polyvinyl chloride composition, is bonded to each side of at least one layer of synthetic rubber, e.g. Hycar (Registered Trade Mark), Butyl rubber or Neoprene. Where the synthetic rubber selected will readily bond to the polyvinyl chloride, the cloth backing is coated on both surfaces with polyvinyl chloride ; otherwise, to aid bonding, the cloth backing of the supported polyvinyl chloride is coated on one side with a synthetic rubber of the same composition as the synthetic rubber layer. The hose may have an internal or external wire helix, or both, or an embedded helix. In an example, the hose comprises a layer of supported polyvinyl chloride, a wire helix embedded between two layers of synthetic rubber, an outer layer of supported polyvinyl chloride, and an external wire helix, the layers being helically wound with an overlap on a mandrel ; the completed hose is wrapped with a cloth saturated with water and placed in a steam chamber to bond the layers together.