baber/WOPTO huggingface dataset:
Patent GB-1110147-A (GB)
Title: Process for preparing a copolymer of vinyl chloride and ethylene
IPC: C08F10/00
Filed: 1967-01-31
Abstract: A vinyl chloride - ethylene copolymer is obtained in the presence of a radical catalyst at a substantially constant (\sB 10 DEG  C.) temperature between 9.9-60 DEG  C. and an ethylene pressure between 5-150 kg./cm.2 which is maintained within 20% of the set pressure by withdrawing ethylene during the reaction.  The polymerization is preferably effected in aqueous emulsion or suspension which may contain methanol, hydrocarbons, or mercaptan or halogen chain transfer agents; polyvinylalcohol or sodium dodecyl benzene sulphonate may be used as suspension or emulsifying agent.  Several catalysts are mentioned, redox systems being preferred. There may be present a third monomer, e.g. propylene, butene-1, isobutene, vinyl ethers, acrylonitrile, styrene, vinylidene chloride, divinylbenzene, diallyl phthalate or ethylene glycol dimethacrylate.
Patent GB-842902-A (GB)
Title: Improvements in and relating to electric circuit breakers
IPC: H01H73/30
Filed: 1957-02-12
Abstract: 842,902. Automatic circuit-breakers; mechanical switches. MECHANICAL PRODUCTS Inc. Feb. 12, 1957 [July 16, 1956], No. 4729/57. Class 38 (5). An automatic circuitbreaker has a spring- biased plunger 21, a member 57 supporting movable contacts 27 for lineal movement on the plunger, a spring-biased latch 73 pivoted on the member 57 and normally engaging the plunger 21 to connect the plunger and supporting member together for movement as a unit and thermal overload means 97 to move the latch 73 against its spring 77 out of engagement with the plunger. When the latch is released, springs 85 pull the member 57 down to open the contacts 25, 27. At the same time, the force exerted by the springs 85 on pivoted latches 93 is reduced, so that a spring 51 is able to force the plunger 21 downwardly, forcing rollers 109 of the latches 93 away from shoulders 111 of the plunger. The plunger then moves down to a position in which the latch 73 re-engages the end 65 of a slot in the plunger when the bimetallic element 97 cools. To reclose the circuit-breaker, a button 43 is pushed until the contacts reclose and the rollers 109 engage the shoulders 111 to latch the plunger 21. The circuit-breaker may be opened manually by pulling the plunger so as to cause the shoulders 111 to cam the rollers 109 into a position where the plunger is permitted to move to the " off " position. In a modified arrangement, Fig. 10, the plunger is in two parts connected together by a rivet and slot connection 145, 147. The plunger is normally latched by the rollers 137 abutting latch surfaces 151 on the part of the plunger to which the contacts are latched. When the button 153 is pulled, cam surfaces 149 on the other part, 141, of the plunger cam the rollers 137 away from the latch surfaces 151 to release the plunger. For ambient temperature compensation the bimetallic element may be formed in two parts, a current-carrying part and a reversely disposed non-current-carrying part, Fig. 9 (not shown).
Patent GB-1113025-A (GB)
Title: Improvements in teasing machines or similar machines for the textile industry
IPC: D01G11/00
Filed: 1966-02-03
Abstract: 1,113,025. Tearing machine. R. LAROCHE. 3 Feb., 1966 [4 Feb., 1965; 10 Dec., 1965], No. 4776/66. Heading DIN. A rag tearing machine wherein rags or other fibrous material are presented to a spiked or toothed cylinder 4 by a feed arrangement comprises a curved, adjustable member 32 adjacent the cylinder and preferably pivoted about an axis 33 adjacent the feed device, the member_minimising air currents and allowing waste and unteared rag to fall between member 32 and a further adjustable member 29, while the teared fibres are carried on the surface of the cylinder inside the member 29. The waste .and unteared rag falls onto a conveyor (10) Fig. 1, not shown, to be. carried to two or more revolving drums (12, 13) having jagged or indented angle-irons or beaters, or rods; the second drum rotating more quickly than the first. The foreign bodies fall and pass through grills, grids, perforated aprons or adjustably spaced bars (14, 15) while the rags pass onto a conveyor (19) to be returned to conveyor (1) and re-fed to the tearing cylinder. The teared fibres are drawn to a plate (6) by the suction created by a revolving perforated suction roller (8), over the roller (8) and onto a delivery conveyor (9). The apparatus for presenting the rags to the tearing cylinder may comprise any known feeding mechanism but, preferably is a curved plate 2 and a roller 3 which is rubber covered, fluted or provided with rubber rings or collars. Alternatively plate 2 is replaced by a number of adjacent plates or by pedals. A window is provided so. that member 32 can be observed and adjusted while the machine is running.
Patent GB-527425-A (GB)
Title: Process of treating magnesia-containing lime-stones
IPC: C01F11/18
Filed: 1939-02-14
Abstract: 527,425. Calcium carbonate magnesium hydroxide. TRIGGS, W. W. (Standard Lime & Stone Co.). Feb. 14, 1939, No. 4793. [Class 1 (iii)] Magnesian limestone is treated to produce calcium carbonate and magnesium hydroxide by calcining it to produce a soft burned calcium oxide component, slaking while hot with sufficient excess of water to produce a " milk," violently agitating the diluted milk till the calcium hydroxide has passed into solution, separating the magnesium hydroxide, treating the clear solution of calcium hydroxide with carbon dioxide and separating the calcium carbonate produced. Specification 500,527 is referred to.
Patent GB-252432-A (GB)
Title: Improvements in or relating to resonators for sound reproducing instruments or machines
IPC: G10K13/00
Filed: 1925-02-21
Abstract: 252,432. Porritt, W. Feb. 21, 1925. Tone-arms.-Sound-magnifying conduits, including in a gramophone the tone-arm, are provided at nodal points or areas with a series of constrictions, interference bands, &c. which restrict the formation of undesirable overtones or upper partials. In the horn shown in Fig. 1, felt rings B<1> - - B' are inserted as shown, all with the exception of the ring D<3> being arranged at nodal points. An additional ring B at the inner end of the horn provides effectively a point source of sound and in a gramophone this ring is placed adjacent to the sound-box. The nodal points are found to occur partly in pairs and a wider ring B<4> is then employed to cover an area including both points of a pair. The ring B<3> is inserted at an antinode for the second overtone to prevent the development of the latter. In modifications, internal interference rings may be cast in one with the horn, interrupted-spiral rings may be inserted, or the surface may have circumferential indentations at nodal points. The horn shown in Fig. 3 has sharp constrictions A<1> - - A<6> dividing the interior into a series of chambers, the transverse portions a being pierced to prevent a swirling action. A horn may be similarly built up from a number of sections connected by tubular passages situated at nodal points of the finished instrument. The positions of the nodes may be determined by calculation or experimentally by the use of a manometric flame. One of the Provisional Specifications refers also to the provision of perforations at nodal points as an alternative to interference bands &c.
Patent GB-545745-A (GB)
Title: Improvements in electrical cartridge fuses
IPC: H01H85/157
Filed: 1941-04-11
Abstract: 545,745. Fuzible cut-outs. BELLING & LEE, Ltd., and HODBY, A. L. April 11, 1941, No. 4832. Drawings to Specification. [Class 38 (i)] A fuse cartridge of the type in which end caps are secured to a glass or porcelain tube by melting a pellet of solder within each cap is simplified by the use of a high melting-point solder which adheres to the plain ends of the tube and does not necessitate reducing or shaping of the ends to key with the solder as has hitherto been done. A suitable solder is a tin-antimony alloy or a silver-lead alloy.
Patent GB-734798-A (GB)
Title: Steroids
IPC: C12P33/00
Filed: 1953-02-23
Abstract: The invention comprises 14-a -hydroxyprogesterone and the preparation thereof by bringing progesterone into contact with oxygenating substances produced by a growing fungus of the genus Mucor or the genus Helicostylum, e.g. Mucor griseo cyanus, Mucor parasiticus or Helicostylum piriforme.  Either the culture medium on which the fungus has grown or the culture medium itself may be utilized.
Patent GB-651740-A (GB)
Title: Improvements in or relating to thermostatic regulators for electric heating elements
IPC: G05D23/275
Filed: 1948-02-20
Abstract: 651,740. Thermal switches. BREVETS ET PROCEDES PYROR SOC. ANON. Feb. 20, 1948, No. 5068. Convention date, Feb. 21,1947. [Class 38(v)] In a thermal switch having a bimetallic element actuating a tilting mercury switch, adjustment is obtained by displacing angularly the support on which the element and mercury switch are carried. The mercury switch 4 is carried by a support 7, which is pivoted at 8 on a supporting member 9. The bimetallic element 11 is mounted on the member 9 and has a heating element 13 and a part 11<SP>1</SP> abutting the support 7. When the bimetallic element is heated, it tilts the support 7 to actuate the mercury switch. The supporting member 9 is pivoted at 10 and is displaced angularly by means of a cam 14 which is turned by means of a knob 16 with scale 17. It is stated that the sensitivity of the switch is greater at one end of its range when the heating element 13 is connected in series with the circuit to be controlled, and at the other end of its range when the element 13 is connected in parallel to the circuit to be controlled.
Patent GB-333567-A (GB)
Title: Improvements in or connected with window blinds and casings therefor
IPC: E06B9/58
Filed: 1929-02-15
Abstract: 333,567. Hall & Kay, Ltd., Hall, D., Kay, P., and Hall, S. Feb. 15, 1929. Roller blinds.-Two roller blinds 7, 8 are supported in a casing provided with grooves in which the edges of the blinds run, the grooves being constituted by removable fittings having fixed and hinged flanges between which the edges of the blind more remote from the window can be clamped. In the construction shown the grooves 7<a>, 8<a> are provided by a metal plate 10 and a metal fitting 11 of a double channel section, the fitting 11 being removably secured to the vertical member 6 of the casing by a rotatable key 12. The outside flange 11<c> of the fitting 11 is hinged and provided with a cam 14 which is engaged by a finger 12<b> carried by the key 12 to hold the flange 11<c> pressed towards the intermediate flange 11<b> of the fitting 11 to grip the edge of the blind 8. A second finger 12<c> carried by the key 12 may be engaged with the cam 14 to hold the flange 11<c> parallel to the flange 11<b>, to allow free movement of the blind. When both fingers are clear of the cam 14 the flange 11<c> can be turned aside, as shown in dotted lines. The bottom member 9 of the casing is formed with a single or double channel to receive weighted rods secured to the ends of the blind. The top part of the casing, which carries the brackets 15, 16 supporting the rollers, may be provided with a cover to enclose the rollers. According to the Provisional Specification, the blinds are secured to their rollers by rods inserted in grooves in the rollers and held therein by spring clips embracing the roller, the cord drums being gapped to receive the rods.
Patent GB-932802-A (GB)
Title: Improvements in methods of injecting and trapping particles in a confining magnetic field
IPC: H05H1/22
Filed: 1961-02-10
Abstract: 932,802. Discharge apparatus. GENERAL DYNAMICS CORPORATION. Feb. 10, 1961 [Feb. 16, 1960], No. 5143/61. Class 39 (1). Charged particles are injected into a particle confining magnetic field, as in accelerators or plasma (i.e. " hot-gas ") confinement vessels, in the form of bunches and at an angle to the field so as to be trapped therein. In Fig. 1, the injecting device 10 is tangential to a circle of slightly smaller radius then the chamber 12 and at a slight angle to the longitudinal dimension of the chamber so that the injected particles move longitudinally of the chamber. The magnetic confinement field is concentrated at the ends of the chamber to form "magnetic, mirrors." In Fig. 2 an ion, e.g. deuteron, injecting device 10 consists of an electron bombardment type ion source 24, a focusing electrostatic lens 36, accelerating electrodes 38 and a velocity-modulating cylinder 41. The acceleration tube 22 is surrounded by a magnetic shield 40. Where it is desired to inject neutral plasma, the ions are neutralized by a cloud of electrons introduced into the ion path by an electron emitting filament located between the accelerating electrodes 38 and the chamber 12. In Fig. 3 an electron injecting device consists of a first electron source 43 with velocity-modulating cylinder 45, accelerating electrodes 48, 50, 52, and a second electron source 54 with velocity modulating cylinder 56 for providing an electron beam which is slightly lower in average velocity than the first beam. Only one beam may be velocitymodulated. A beam of bunched ions may be injected into a plasma. It is stated that plasma oscillations will be created in the plasma within the chamber and will interact back upon the bunches of ions to amplify the bunching. The confinement chamber may be linear, toroidal or in the form of a figure eight.
Patent GB-108686-A (GB)
Title: An Improved Self-driving Wheel.
Inventor: WICKS ALFRED
IPC: F03G7/10
Filed: 1916-04-08
Abstract: 108,686. Wicks, A. April 8, 1916 Self-driving machines.-Comprises two component coaxial wheels, one bearing the mechanism shown in Fig. 1, the other that shown in Fig. 2. The former mechanism comprises levers B with hooked ends, tumblers C, a concentric chain D, catch-wheels E for the levers, a cam-way H for rollers on the tumblers, and a radial endless chain L with which the inner ends of the levers engage. The latter mechanism comprises heavy arms K, linkage P, and a rocker Q carrying wheel-work which transmits motion from the concentric chain to the radial chains. A pair of small fly-wheels M is provided.
Patent GB-176740-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H33/55
Filed: 1920-12-03
Abstract: 176,740. British Thomson - Houston Co., Ltd., (General Electric Co.). Dec. 3, 1920. Oil switches with contacts separable in an oil or other insulating-liquid container 3 are provided with a perforated baffle-plate 35, partially submerged in the liquid, supported by the cover 37 of the container, and consisting of a central section 35b and two inclined end sections 35<a>, 35<c> so arranged that the blow exerted by the liquid on the baffle-plate when the high potential circuit is opened is progressively applied thereto. The baffle-plate allows expansion of the oil &c. and at the same time prevents the ejection of heated particles into the gas-charged space above the oil. Each section of the baffle-plate is made up of two superposed plates with registering holes in each and with wire gauze between them. The end sections through which the insulators pass are secured to the cover bv struts 38, and the middle portion is secured to a removable section 40 of the cover so that, by removing this section, access to the container is obtained.
Patent GB-812786-A (GB)
Title: Improvements in or relating to upholstery
IPC: A47C27/05
Filed: 1957-02-15
Abstract: 812,786. Upholstery. KNOLL, D., and KNOLL, M., [trading as KNOLL, W. [Firm of]]. Feb. 15, 1957 [Feb. 15, 1956], No. 5216/57. Class 52(4) An internally sprung upholstered article is provided with a soft surface layer of padding 4, preferably foamed rubber or synthetic material, separated from the base padding 2 by webbing or other fabric 5 and enclosed in ticking 3. The ticking 3 is sewn to the webbing 5 in parallel seams 6 extending longitudinally of the article. wood or metal base, when the padding 2 The springs may be supported from a beneath the springs is dispensed with.
Patent GB-776273-A (GB)
Title: Improvements in or relating to pistons for internal combustion engines
Inventor: WANS IAN
IPC: F02F3/00
Filed: 1954-02-23
Abstract: 776,273. Pistons. RUSTON & HORNSBY, Ltd. Feb. 14, 1955 [Feb. 23, 1954], No. 5236/54. Class 122 (1). A piston for internal combustion engines, particularly compression ignition engines, comprises a head 12 having an integral annular rib 18 depending from the crown 16 whereby the head is detachably secured, as by studs 19, to a body portion 11, the annular space outside the rib 18 being cooled by the circulation of liquid, for example lubricating oil, but the cavity within the rib not being so cooled. The body portion 11 is formed with internal gudgeon pin bosses 13 strengthened by webs 14 and the cavity within the rib 18 is closed by a splash guard 20.
Patent GB-579923-A (GB)
Title: Improvements in or relating to the production of iron or steel alloys containing vanadium and silicon
IPC: C21C7/00
Filed: 1942-04-21
Abstract: 579,923. Alloys. CLIMAX MOLYBDENUM CO. April 21, 1942, No. 5349. Convention date, March 6, 1941. [Class 82 (i)] Iron or steel alloys containing vanadium and silicon are produced by adding a pre-formed vanadium silicide direct to molten iron or steel, the temperature of the latter being sufficient to dissolve the silicide. The silicide may be added to a blast furnace as part of the charge or to the iron or steel in a ladle and a mixture of vanadium silicides with or without an excess of silicon may be used. Other alloying ingredients, e.g. molybdenum, either in the form of ferro-molybdenum or calcium molybdate may be added with the silicide. Reference has been directed by the Comptroller to Specification 151,974, [Class 82 (i)].
Patent GB-683548-A (GB)
Title: Improved portable wheeled carrier for golf bags or other articles
IPC: B62B1/00
Filed: 1950-03-02
Abstract: 683,548. Collapsable carriers. HALSEY, N. W. S., and FAHEY, T. June 4, 1951 [March 2, 1950], No. 5354/50. Class 108 (i). A collapsable golf-bag or other carrier comprises a base support 2 rigidly or pivotally secured to the upstanding post 1 which carries towards its lower end a bracket 3 having links 4 pivoted to it. Wheel-carrying arms 5 are supported by the links 4 and by links 6 which are pivotally connected to a slider 7 mounted on the post 1 so that by loosening the clamping screw 8 and raising the slider 7 the wheels may be retracted into a position adjacent the post 1. An adjustable handle 15 is pivoted to the upper end of the post 1 and straps 13, 14 may be provided for securing the article being carried. Wheels 11 mounted on the bracket 3 serve as ground wheels when the carrier is collaped.
Patent GB-180045-A (GB)
Title: Improvements in and connected with commutators for electric machines
IPC: H02K13/00
Filed: 1921-02-17
Abstract: 180,045. Calverley, J. E., and Highfield, W. E. Feb. 17, 1921. Commutators. - In a commutator for an electric machine wherein the contact surface is the inside of a cylinder, shrink rings or equivalent binding-means not mechanically interconnected are applied to the outside at or near the ends. In the example illustrated in Fig. 2 the segments A, having an outside insulating layer N, are secured by shrink rings B on which are mounted annular metal plates C. The channel D thus formed is closed by means of the cylindrical metal casting E, and serves to house the lugs G attached to the commutator segments. The casting is constructed in two parts, bolted together on an horizontal diameter as shown in Fig. 3. The lower half is provided with a pair of feet E<1> by means of which the commutator is supported on the base F, and the connections from the windings to the commutator lugs G may be brought in through these feet. The end faces H of the commutator segments, the shrink rings B and plates Care made flush, insulating cement being applied to the grooves M, and these faces are covered by insulating plates J. The invention is particularly applicable to machines of the type described in Specifications 140,853, 150,824, and 150,825, [all in Class 38 (ii), Electric currents, Converting &c.].
Patent GB-1158390-A (GB)
Title: Improvements in or relating to Open-Frame Motor-Assisted Bicycles
IPC: B62K11/08
Filed: 1968-02-02
Abstract: 1,158,390. Cycle frames. PIAGGIO & C. S.p.A. 2 Feb., 1968 [8 Feb., 1967], No. 5468/68. Heading B7E. A motor assisted pedal cycle, Fig. 3, comprises longitudinal channel members 11, 1<SP>11</SP> containing belt and chain drives from the engine and pedals respectively, covers 19<SP>1</SP>, 19<SP>11</SP>, Fig. 4, for the channel members, a rear wheel mudguard portion 5 joining the members 1 and bracing the rear fork 7, and a tank 4 forming part of the frame and connecting the longitudinals with the steering head 2. A lid 20 resting on the longitudinals provides a foot rest and engine cover and the engine which is cooled by air drawn through holes in the lid 20 is hung from bolts passing through slots 10. A gear-box (14), Fig. 2 (not shown), is bolted to the longitudinals and supports the rear wheel, and the belt (11) runs over expandable type pulleys to provide speed variation.
Patent GB-678154-A (GB)
Title: Improvements in or relating to fastener driving devices
IPC: B27F7/21
Filed: 1948-02-24
Abstract: 678,154. Fastener driving machines. BOCJL CORPORATION. Feb. 24, 1948 [June 5, 1947], No. 5498/48. Class 89 (iii). In a device for shearing from a prepared metal strip and driving pronged fasteners or staples, the fastener driver is raised against a spring by fluid pressure and is tripped to allow a fastener to be cut off and driven. A driver 26 is raised against a spring 10 by means of fluid pressure supplied by a pipe 17 through a valve 16 operated by a lever 86 to actuate a piston 7 and a rod 8 which is connected to the driver 26 by a yoke 62, 65. The spring 10 is released when a roller 74 engages a cam surface 67 and the valve 16 is subsequently tripped to an exhaust position by means of a cam surface on the yoke 62, 65 engaging a pivoted lever. A cam surface on the driver operates to move a plate 47 carrying spring pawls 53 to the right against a spring 48 to engage them in a pair of notches formed in one side of a strip A fed from a drum A<SP>1</SP> when the driver 26 travels downwards, and the pawls 53 move forward to advance the strip A when the driver 26 is raised. Spring pawls on a U- shaped spring 43 fixed to a base plate 2 prevent the strip A from moving backwards. Specification 678,153, [Group XXV], is referred to.
Patent GB-402382-A (GB)
Title: Improvements in method of making mono-chloramine
IPC: C01B21/09
Filed: 1932-02-24
Abstract: Mono-chloramine or a mixture of mono- and di-chloramine is obtained by the reaction of available chlorine on ammoniacal material in the presence of either an insoluble base, or a basic compound which is the salt of a weak acid and a strong base, in sufficient quantity to absorb all the acid liberated in the reaction.  The chlorine may be employed in the form of free chlorine or hypochlorous acid and the ammoniacal material may be free ammonia or an ammonium salt such as the chloride or sulphate. Calcium carbonate, magnesium carbonate and dolomite are the basic compounds referred to.  The process is suitable for the production of dilute solutions of chloramines for use in the sterilization of water.  According to an example such a solution is prepared by adding a mixture of calcium carbonate and ammonium chloride to water in a tank provided with stirring means, chlorine gas being subsequently added.