baber/WOPTO huggingface dataset:
Patent GB-901252-A (GB)
Title: Treatment of films
IPC: C08J7/052
Filed: 1959-04-10
Abstract: 901,252. Coated films. MONTECATINI SOC. GENERALE PER L'INDUSTRIA MINERARIA E CHIMICA. April 10, 1959 [April 15, 1958], No. 12211/59. Class 140. A coated film is produced by applying to at least one surface of the film a solution of an amorphous or partially crystalline polypropylene having an intrinsic viscosity below 1 and subsequently evaporating the solvent. The polypropylene may be obtained by solvent extraction using aliphatic hydrocarbons, e.g. pentane, hexane, heptane, chlorinated aliphatic hydrocarbons, e.g. chloroform, trichloroethylene, perchloroethylene and carbon tetrachloride, and diethyl ether, of the crude polymer obtained by polymerization in the presence of a stereospecific catalyst. The polypropylene may be further extracted with acetone, the residue being employed. The polypropylene may be chlorinated, e.g. by dissolving the polypropylene in carbon tetrachloride, subjecting the solution to the action of gaseous chlorine, removing excess chlorine and filtering the solution, and may have a chlorine content of from 10 to 50%. The chlorinated polypropylene may be applied as a solution in chloroform, trichloroethylene, perchloroethylene, toluene, or a mixture of two or more thereof, having a concentration of not less than 10% by weight. The film may be a polyester film, e.g. polyethylene terephthalate, regenerated cellulose, or a vinyl copolymer film, e.g. a vinyl chloridevinyl acetate film. Specifications 854,649 and 868,158 are referred to.
Patent GB-848540-A (GB)
Title: Improvements in or relating to dental handpieces having a head enclosing a compressed air turbine for driving a dental tool
IPC: A61C1/14
Filed: 1959-04-10
Abstract: 848,540. Dental engines. SIEMENSREINIGER-WERKE A.G. April 10, 1959 [April 12, 1958]. No. 12252/59. Class 81(2). A dental handpiece has a turbine supported in the head by ball bearings 15, 16, the inner races 21, 22 of which are fixed to the turbine rotor, the outer races 17, 18 being fixed to bushes 19, 20 fixed in the head. The ball bearings are open, the inner races being fixed by pressing or shrinking to the turbine shaft 11. The outer races are fixed by glueing, soldering or shrinking to cup-shaped bushes which form end closures 24, 25 for a tubular housing 8 in which they are fixed by glueing, soldering or shrinking. Air carrying oil mist is supplied tangentially to the turbine through a duct in the handpiece and, after passing through the bearings, passes out of the head, a small portion being directed towards the end 10 of the tool through a gap 39 surrounding the tool and the remainder being exhausted through a channel 30 in the handpiece and a hose attached to the rear of the handpiece. Water which may be directed towards the tool end through a nozzle 41 in the handpiece mixes with the air passing through the gap to form a water-air spray. The handpiece head has a shaft 3 by which it is detachably connected to the handpiece body 4 by a flanged lock nut 36. The tool shank is secured in a bore 31 in the turbine shaft by a radially resilient slotted sleeve 32. A plug 34 at one end of the sleeve has a conical recess for centering the tool and tightly fits the shaft bore 31.
Patent GB-1261927-A (GB)
Title: Method and apparatus for treating circular saw blades
Inventor: DEHN EDWARD HAROLD
IPC: C21D9/24
Filed: 1969-03-07
Abstract: 1,261,927. Heating inductors. UNITED STATES STEEL CORP. 7 March, 1969 [7 March, 1968], No. 12274/69. Heading H5H. [Also in Division C7]  In a process for hardening the teeth and teeth roots of a circular saw blade the latter is rotated at a peripheral speed of 5 to 50 inches per minute to bring the teeth into an inductor and then under a quenching unit spaced therefrom, e.g. by about one-fifteenth of the blade circumference, a shield being applied to a portion of: the blade that has been already hardened as it approaches the inductor again. As shown in Fig. 3 the shielding device 17 consists of a water-cooled manifold 24 from which depend side plates 25 provided with magnets 28, and has a hook 27 which fits over one of the teeth. The heating effect may be localized by blocks of non-conducting ferromagnetic material extending over the combined length of a tooth and tooth root. The inductor may consist of a length of rectangular section copper tubing 18 of the form shown in Fig. 2 carrying blocks 22, 23 of ferromagnetic material, consisting of fine particles embedded in a plastic matrix. To further improve the fatigue life of the blade a radial slot 30 (Fig. 3) may be cut in the root following the last hardened one.
Patent GB-219649-A (GB)
Title: Improvements in or relating to catalysts proper or reduction and hydrogenation processes
IPC: C07C29/14
Filed: 1924-05-19
Abstract: Catalytic materials for use in hydrogenation or reduction reactions are prepared by the incomplete reduction at a temperature not exceeding 200 DEG  C. of a hydroxide or a non-fused oxide of copper to which a substance having an alkaline reaction has been added.  The alkaline substance, which need only be present in small quantities, e.g. less than 0.25 per cen, may comprise caustic alkalis (including lithia), alkaline earths (including magnesia and zinc oxide), and basic salts, such as carbonates, phosphates, or borates, of alkali or alkaline earth metals.  The catalyst may be prepared, for example, by adding caustic alkali to a boiling solution of a cupric salt, separating and washing the precipitated hydrated copper oxide, treating it with a dilute solution of the alkaline substance, and partially reducing the dry product, preferably in situ, by passing hydrogen over the mass, maintained at a temperature of 80-160 DEG C., until the weight remains constant.  The Specification as open to inspection under Sect. 91 (3) (a) describes the partial reduction of any oxide of copper; this subject-matter does not appear in the Specification as accepted.
Patent GB-377688-A (GB)
Title: Manufacture of flexible electrical insulating material
IPC: H01B3/18
Filed: 1931-04-27
Abstract: Flexible material is prepared by working up cellulose ethers which are insoluble and do not swell in water with plasticizers consisting of aromatic polyethers of polyhydric alcohols with or without fillers and volatile solvents.  A preferred plasticizer is ditolyl or dibenzl ether of glycerol.  The fillers may be zinc oxide, slate, or asbestos, and the mixing takes place at a temperature about 80-170 DEG  C.  Specification 364,807 is referred to.
Patent GB-494764-A (GB)
Title: An improved aluminium alloy
IPC: C22C21/12
Filed: 1937-05-01
Abstract: The aluminium alloy described in the parent Specification is modified by reducing the iron or silicon content, or both, the former to not less than 1,0 per cent and the latter to not less than 0,5 per cent. The alloy with reduced iron content consists of 1 to 1,5 per cent of iron, 0,7 to 1,5 per cent of magnesium, 2,0 to 3,0 per cent of copper, 0,35 to 2,0 per cent of manganese or manganese plus not more than an equal amount made up of one or more of the metals chromium, cobalt, molybdenum, tungsten, and vanadium, and 1,0 to 4,5 per cent of silicon or silicon plus not more than an equal amount of boron, the remainder being substantially aluminium.  The alloy with reduced silicon content contains 1,5 to 3,0 per cent of iron, and not less than 0,5 but less than 1,0 per cent of silicon or silicon plus boron, the other constituents being the same as in the first alloy.  The alloy with reduced contents of both iron and silicon is a modification of the first, the silicon or silicon plus boron content being not less than 0,5 but less than 1,0 per cent. Nickel and refining elements such as cerium and titanium may be present in the alloy, to an amount of not more than 0,2 per cent each.  The alloy is used for hot working and for extruded parts, and after hot working or extrusion is preferably given solution treatment and then artificially aged.  If cold working is employed, it is preferably carried out before complete precipitation, and the artificial ageing temperature may be about 140 DEG  C.  The ageing may be completed naturally or artificially after the cold working.  Specifications 425,102, 434,022, and 477,278 are referred to.
Patent GB-1077747-A (GB)
Title: Improvements relating to electro-chemical integ rators
Inventor: KIRYLUK WLODZIMIERZ
IPC: G01R22/02
Filed: 1965-03-24
Abstract: 1,077,747. Variable resistors. INDUSTRIAL INSTRUMENTS Ltd. March 11,  1966, No. 12518/65. [March 24, 1965, No. 2 12518/65. Heading H1S. [Also in Divisions G1 an G4] A variable resistance comprises a carbon track (18) in contact with a CdS photo-conductive layer (19) on which is sputtered a translucent conductor (2O). The resistance between terminals (21) depends upon the  position of a beam if light passing through the slit (16) on to the photo-conductive layer.
Patent GB-906820-A (GB)
Title: Self-hardening water glass cement compositions
IPC: C04B24/06
Filed: 1959-04-13
Abstract: A self hardening composition comprises an inert inorganic filler, an aqueous water glass solution and as hardener a mixture of a polymer or copolymer as in the parent Specification and a polyglycollide each in an amount of 0,1 to 0,9% relative to the filler.  Specified ingredients are quartz, a styrene malice anhydride co-polymer and either sodium or potassium water glass.
Patent GB-265049-A (GB)
Title: Improvements in chucks for machine tools
IPC: B23B31/173
Filed: 1926-05-17
Abstract: 265,049. Richards Thread Milling Machine Co. (1918), Ltd., Burt, L. N., and Gray, J. B. C. May 17,1926. Chucks. - The jaws E of a selfcentring chuck are moved radially by coacting wedges A, B, the wedges A being moved parallel to the chuck axis by screwed pinion shafts H rotated by an annular gear wheel H<2> which, in turn, is operated by a pinion J on a key spindle J<1>. The jaws E are attached to the wedges B by screws F. The wedges A, B are interlocked by dovetail &c. sections M, and the wedges A are guided longitudinally in the body C. In a modification the wedges A have a guide-rod at each end, one of the guide-rods being screwed for actuation by a threaded pinion. In a further modification, the wedges A have tail-pieces adapted to engage in an annular slot in a gear wheel H<2>, Fig. 6, which is threaded on its periphery to screw into the shell G round the body C. In another modification the tail pieces on the wedges A have teeth to gear with a screw thread on the periphery of a bevel gear wheel actuated by a bevel pinion whose axis is perpendicular to the axis of the chuck. In those cases where the wedges A are actuated by pinions and screws the thrust of the wedges is taken by ball-bearings as at N, Fig. 3.
Patent GB-781559-A (GB)
Title: Production of dry n, n-diisopropyl-2-benzothiazolesulfenamide
IPC: C07D277/80
Filed: 1956-04-25
Abstract: Benzthiazole 2 - N:N - di - isopropysulphenamide is obtained in a substantially dry state from a mixture containing it by adding water, agitating the mixture and centrifuging at a temperature sufficiently high to keep the sulphenamide in a molten state, e.g. 60-100 DEG  C. Examples show the process applied to the methanol solution obtained by reacting bisbenzthiazole disulphide, N-chloro-di-isopropylamine and di-isopropylamine with or without separation of the solid phase obtained on addition of the water.  The method is also applicable to the crude solid sulphenamide.
Patent GB-685151-A (GB)
Title: Improvements in and relating to polymerisation of products of ª‡:ª‰-unsaturated carboxylic acids
IPC: C08F120/06
Filed: 1950-05-22
Abstract: Granular polymerization products of a :b -unsaturated carboxylic acids are obtained by a process in which the reaction mixture obtained by the hydrolysis of ketone-cyanohydrins with strong mineral acids, particularly sulphuric acid, is heated and agitated in the presence of polymerization catalysts but in the absence of molecular oxygen.  The catalyst may be hydrogen or benzoyl peroxide or phenyl azide, and the polymerization may be carried out on the solution obtained by the addition of water to the hydrolysis product.  An example describes the preparation of polymethacrylic acid from acetone cyanohydrin.
Patent GB-594227-A (GB)
Title: Improvements in or relating to jigging conveyors
IPC: B65G27/16
Filed: 1945-06-29
Abstract: 594,227. Jigging-conveyers. BLACK, W. June 29, 1945, No. 12729/47. Divided out of 594,210. [Class 78(i)] In a conveyer made up of a series of overlapping rigid metal troughs, each trough is supported resiliently and is connected to a pair of parallel ropes, and a jigging motion is imparted to the troughs against the action of a returning, spring. One end of each trough 18, Fig. 3,'is supported by springs 23 which are mounted on sole plates 24. The end trough 19, Fig. 2, is connected by a plate 20 to a return spring 21 which is attached to a prop 22. Ropes 17 at each side of the troughs are passed through slotted members 27 mounted on cross-bars 26 fixed to the underside of each trough and are secured therein by single wedges 29 or by pairs of wedges. Adjustable tensioning screws 16 connect the cables to a cross-bar 15 which is connected by an arm 14 to a frame 11. This frame is slidably mounted in guides 12 and is engaged by a polygonal rotary drum constructed as described in Specification 594,210.
Patent GB-575000-A (GB)
Title: Improved firing mechanism for self-loading firearms
IPC: F41A19/45
Filed: 1943-08-06
Abstract: 575,000. Automatic smallarms. WESTERN CARTRIDGE CO. Aug. 6, 1943, No. 12748. Convention date, Jan. 29. [Class 119] In order to ensure the re-engagement of the sear of a semi-automatic rifle with the bent of a pivoted hammer after each discharge, although the trigger may still be held pulled, the hammer 29 is formed with two bents 32, 33, which are relatively displaced so that when the hammer is thrown back by the recoiling breech-bolt, to an overcocked position shown in Fig. 3, the rear bent 33 will be engaged by a spring-pressed secondary sear 56, Fig. 10, which is pivoted in a recess 54 in the trigger 42, Fig. 11, on the trigger axis-pin 44. The spring 58 of the sear 56 operates between the sear and the trigger. The main sear 51 is integral with the trigger. The trigger spring 48 acts upwardly upon a front extension 45 of the trigger, and such extension engages a front extension 57 of the pivoted sear 56 when the trigger is rocked counterclockwise by its spring 48. The main hammer-bent 32 is backed by an incline 34. When the weapon is fired, the hammer is pushed back and caught by the spring sear 56. Upon relaxation of the finger pressure on the trigger, the latter is rocked by its spring 48 and the engagement of the projections 45, 57 causes the sear 56 to be released. Thereupon, the hammer is moved by its spring 37 and the incline 34 engages the nose 52 of the triggersear 51 and causes engagement of the sear with the bent 32. The forward thrust on the sear and trigger caused by the incline 34 brings a slope 63 on the secondary sear 56 into contact with a slope 35 below the secondary bent 33 of the hammer, so that, as the trigger is pulled to fire the next shot, it has first to compress its spring 48 alone and then to compress also the secondary-sear spring 58, thus giving a double-pull. The hammer is mounted in the manner set forth in Specification 571,726.
Patent GB-109469-A (GB)
IPC: F04F7/02
Filed: 1916-09-09
Abstract: 109,469. Bates, C., and Cunis, W. E. Sept. 9, 1916. Vacuum apparatus for raising liquids comprises two chambers A communicating by conduits c with a common valve box d, in which a plug c with two ports f is revolubly mounted. The casing d has two similar pairs of ports h, i and j, k, of which the ports h, k are connected by tubes h<1>, k<1> td the upper end of the chambers A, and the ports i, communicate by pipes i<1>, j<1> with a vacuum pump &c., so that when the plug e is in the position shown in Fig. 6, one of the chambers is connected to the vacuum pump through the pipes h<1>, i', and a channel w in the plug, and is therefore filling through the pipe p, while the other chamber is connected to the atmosphere through the pipe k<1>, channel o and port m, and is discharging. When the plug is turned to bring the channel o into register with the ports k, j and the channel n into register with the ports h, l the reverse process occurs. The plug e is automatically turned by the impact of the outflowing liquid on a plate F pivoted in the plug and carrying a slotted member D, which is engaged by a pin on the end of a weighted lever E pivoted on the outside of the plug. The plug is prevented from turning until a float s in the chamber A turns a cam y<3> and releases a rod z carried by the plug. The impact of the liquid on the plate F carries the weight on the lever past the dead centre, and the weight then completes the turning movement of the plug.
Patent GB-804665-A (GB)
Title: Improvements in or relating to conveying and counting mechanism
IPC: B65H29/00
Filed: 1955-05-03
Abstract: 804,665. Endless conveyers. IGRANIC ELECTRIC CO., Ltd. May 3, 1955 [May 7, 1954], No. 12784/55. Class 78 (1). [Also in Group XL (b)] A conveyer of the belt and pulley type for conveying and counting flat flexible articles comprises first belts 10 gripping articles with cooperating third belts 20 having end pulleys 21 biased, e.g. by springs 24, to move towards said first belts, second belts 25 having a working section intersecting the path of travel of the first belts at an oblique angle and disposed downstream of said end pulleys, and a beam of light 42 projected across the space defined by the first belts, working section, and end pulleys and impinging on a light-sensitive device, so that as the belts are driven, the leading portion of each article is flipped through the light beam on abutment with said working section. In Fig. 1, the belts and pulleys, e.g. 10 and 12, are respectively a series of parallel wires, and rollers with corresponding grooves. The articles, e.g. newspapers, are fed in overlapping or spacedapart relationship between belts 10 and 20. When the leading edge of an article U contacts belt 25, it is flipped sharply downward, to interrupt the beam 42 and actuate a photo-sensitive device (not shown). The leading edge of the article drops on to a short belt 32, which feeds the article between belts 25 and 37, which deliver the article for stacking. The end pulleys 38 of belts 37 are biased towards belts 25 by springs 41. Specification 781,652, [Group XL (b)], is referred to.
Patent GB-190970-A (GB)
Title: Device for attachment to oil and like drums to facilitate pouring liquids therefrom
IPC: B65D25/48
Filed: 1922-05-06
Abstract: 190,970. Westall, H. R. May 6, 1922. Spouts. - A pouring attachment for oil drums &c. comprises a main part a formed with a curved edge e and adapted to be bent to an arcuate shape, and laterally-extending integral arms b, c, adapted to be bent and interlocked to embrace the neck of the drum.
Patent GB-981033-A (GB)
Title: A process for the preparation of stable and non hygroscopic addition salts of 3-(dialkyl-amino-alkoxy-carbonyl)-pyridines
IPC: H01R4/10
Filed: 1961-04-10
Abstract: The invention comprises (1) acid addition salts of an aliphatic hydroxycarboxylic acid and 3 - (dimethylaminoethoxycarbonyl) - pyridine or 3 - (diethylaminoethoxycarbonyl) - pyridine; and (2) the preparation of stable and nonhygroscopic acid addition salts of 3-(dialkylaminoalkoxycarbonyl) - pyridines by treating a solution of an aliphatic hydroxycarboxylic acid in an organic solvent with a stoichiometric quantity or a slight excess of a 3-(dialkylaminoalkoxycarbonyl) - pyridine, preferably dissolved in the same solvent.  The salt is preferably precipitated from the reaction medium by the addition of a solvent in which it is not more than sparingly soluble, but in which the acid and the base employed are soluble.  ....  Specified acids are ascorbic, 2-keto-gulonic and citric acids.
Patent GB-1218253-A (GB)
Title: Sled for snow or ice
Inventor: CASADEI ANTONIO
IPC: B62B13/16
Filed: 1968-03-18
Abstract: 1,218,253. Sledges. A. CASADEI. 18 March, 1968, No. 12947/68. Heading B7B. An inflatable sledge comprises a number of longitudinal compartments bounded at the front by an arcuate compartment. The central compartment terminates at AA to allow accommodation of the rudder and steering gear which is mounted on a support board for the driver. The front portion is enclosed by a canopy and a back rest 10 is provided.
Patent GB-1416073-A (GB)
Title: Fitments for brakes
IPC: F16D66/02
Filed: 1973-03-17
Abstract: 1416073 Brake-lining wear-indicators GIRLING Ltd 12 March 1974 [17 March 1973] 12971/73 Addition to 1344062 Heading F2E A vehicle brake fitment comprises a wear-adjustment means comprising two parts adapted to be fitted between a location and a brake member which moves relative to the location and normally abuts the means but separates therefrom when the brake is actuated, and a wear indicator, as claimed in any one of claims 1 to 9 or claim 15 of the Specification of the main patent, secured to the part of the adjustment means nearer the brake member and having an extension projecting into the path of relative movement of the brake member and operating the indicator when the separation of the member from the means exceeds a predetermined amount of lost motion. As shown in Figs. 1, 2, a wear-adjusting means 15 for a drum brake comprises a first part 16 having a bifurcated end embracing the lefthand shoe 11 and being secured to that shoe by a spring 23 linking a lug 24 on part 16 with a hole 25 in the shoe; the first part 16 also has a threaded end 17 bearing a wheel 18. The wearadjusting means comprises a second part 19 having a plain socket-like end 20 into which the threaded end 17 of part 16 freely extends and whose rim is contacted by wheel 18; the other end of part 19 is bifurcated and embraces the right-hand shoe 11. A spring clip 27 has two pairs of resilient arms 28 embracing the second part 19, of which one pair fit into slots 32 in part 19 to prevent relative axial movement, and a further pair of preferably resilient arms 30 holds wheel 18 against end 20. Finally spring clip 27 has a pair of smaller resilient arms 29 which secure to it a wear-sensing means 26 which may be of the type described in relation to Fig. 5 of the Specification of the main patent. This wear-sensing means has a tension rod 61 on which a U-shaped abutment 62 straddling the bifurcated end of part 19 is adjustably located, the abutment co-operating with a lug 63 at the inner end of a right-hand slot 22. In operation, if the wear-adjusting means 15 fails to operate, or is not manually operated, so that the shoes 11 separate so far that lug 63 engages abutment 62, tension rod 61 is pulled, and the consequent separation of electrical contacts in the wear-sensing means 26 results in warning being given. Subsequent adjustment of the wear-adjusting means lengthens it so that abutment 62 is spaced from lug 63 again. The left-hand end of part 16 may be engaged directly by spring 23 instead of having a lug. Clip 27 can be axially located on adjuster 15 by a pin moulded on sensor 26 and protruding through a hole in the clip into the adjuster 15. The clip may be integrally moulded with the sensor, so arms 29 may be dispensed with. Arms 30 may carry a pressure ring abutting wheel 18 instead of abutting it directly. Abutment 62 may be only the bent-over end of tension rod 61. In Fig. 7, sensor 26 is secured to adjuster 15 by a screwed fastener 38, only one arm 30 being provided.