baber/WOPTO huggingface dataset:
Patent GB-1532231-A (GB)
Title: Polymerisation process
IPC: C08F2/00
Filed: 1975-04-18
Abstract: 1532231 Hybrid liquid/gaseous polymerization system IMPERIAL CHEMICAL INDUSTRIES Ltd 31 March 1976 [18 April 1975] 16064/75 Heading C3P An olefin polymer is prepared by polymerization of (a) at least one liquid olefin monomer in a process wherein an olefin polymer is prepared in a two-stage process, involving (a) the partial polymerization of a liquid comprising at least one olefin monomer, (b) the partial separation of the residual liquid monomer from the solid polymer so formed, to give a relatively concentrated mixture of polymer and monomer, (c) the transfer of this concentrated polymer/ monomer mixture to another polymerization stage in which (d) further polymerization is effected in the substantial absence of a liquid phase by contact of the solid olefine polymers with at least one gaseous olefin. The partial separation of step (b) may be effected using a hydrocyclone, and the monomer thus separated may be returned to the liquid polymerization stage (a). The gaseous monomer employed in stage (d) comprises vapour produced from the residual liquid monomer and, optionally additional and optionally chemically different gaseous monomers. The particularly described embodiment of the invention involves the preparation of a copolymer wherein the liquid monomer in step (a) is propylene, and is polymerized using an organo aluminium/TiCl 3  catalyst, and wherein gaseous monomers are (i) propylene (from the unreacted liquid monomer present in the concentrated mixture from step (b)), and (ii) ethylene.
Patent GB-199588-A (GB)
Title: Improvements relating to the control of electric motors
IPC: B60L7/12
Filed: 1922-06-09
Abstract: 199,588. Binney, E. A., and Metropolitan-Vickers Electrical Co., Ltd. June 9, 1922. Regenerative systems.-In regenerative systems of the kind employing a stabilizing resistance 5 and an exciter generator 6 connected to the field winding 2 of the main motor 1. an additional automatic adjustment of the main motor field flux, for the purpose of obtaining approximately uniform increase of braking effort with increase of speed, is obtained as shown in Fig. 2, by an additional field winding 11 for the auxiliary motor 8 which drives the exciter generator 6, or, as shown in Fig. 3, by a winding 14, acting to vary the stabilizing resistance, or by a winding acting to vary other resistances in the circuits of the exciter generator. The invention is applicable to traction, hoisting, and other purposes.
Patent GB-775675-A (GB)
Title: Improvements in finned tube core structures for heat exchangers
Inventor: LAWRENCE JOHN WILLIAM
IPC: F28F1/32
Filed: 1954-05-31
Abstract: 775,675. Heat-exchangers. LAWRENCE HOLDINGS (OVERSEAS), Ltd. July 15, 1955 [May 31, 1954], No. 16067/54. Class 64(3) A heat exchanger, e.g. a radiator for an internal combustion engine, comprises a group of lock-seamed, tubes T of elongated rectangular cross-section extending through spaced transverse fins F formed with rectangular openings to receive the tubes, each opening having a peripheral flange 5. Preferably, shallow imperforate dimples 7 are formed in the fins F and are located between adjacent tubes as shown. The edge of each fin is folded to form a reinforcing hem 8 which is indented at intervals to counteract stretching as the result of the folding operation.
Patent GB-1424619-A (GB)
Title: Feminine hygienic pad
IPC: A61F13/20
Filed: 1973-04-04
Abstract: 1424619 Hygienic pads S Z HIRSCHMAN 4 April 1973 16086/73 Heading A5R An elongated absorbent pad 10 for receiving small amounts of urine or vaginal discharge comprises two lengthwise portions having curved surfaces which differ in curvature from each other, the pad being adapted for location and retention in the interlabia space. In the embodiment shown, the cross-section comprises two overlapping circles, the upper circle, 15, being smaller in radius than the lower one 16. In other embodiments, the crosssection comprises overlapping ellipses (15A), (16A) Fig. 7 (not shown). A string 17 may be attached to facilitate removal. The pad 10 may have a uniform cross-section, or may vary in cross-section along its length, Fig. 9 (not shown), and may have a V-shaped groove, Fig. 10 (not shown) extending along its length, a viscous fluid (23) being disposed therein for dispersing by transverse constriction of the pad during insertion. The fluid may be a lubricant, alone or admixed with deodorants, medications and the like.
Patent GB-1328725-A (GB)
Title: Generator for producing very-high-voltage square-topped pulses
IPC: H02M1/04
Filed: 1971-05-20
Abstract: 1328725 Pulse generators; modulating light COMMISSARIAT A L'ENERGIE ATOMIQUE 20 May 1971 [28 May 1970] 16097/71 Headings H3T and H4F A short high voltage pulse of variable duration is produced across a load (e.g. a Pockels or Kerr cell) between terminals 1 and 2 by connecting the terminals to respective capacitors and charging resistor circuits as shown on successively operating switching devices 8, 9, one of which is a spark gap. Initially both capacitors are charged to the supply voltage and there is no voltage across the load. Firing gap 8 reduces terminal 1 to zero voltage so that the voltage across capacitor 7 is applied to the load. Before the capacitor has discharged appreciably gap 9 is fired reducing the load voltage to zero. The capacitors now recharge at the same rate maintaining the zero load voltage. The capacitors can have separate charging supplies and the gaps may be fired by a laser beam, the path to one gap including an optical delay device. The load cell may be used in a device to trigger a laser.
Patent GB-318291-A (GB)
Title: Improvements in and connected with electric heaters
IPC: F24H3/00
Filed: 1928-06-02
Abstract: 318,291. Stone & Co., Ltd., J., and Davey, S. C. June 2, 1928. Electric stores.-A heating element comprises a cruciform metal spider with long and short arms, as shown in Fig. 4. One or more elements h can be arranged vertically on a cross bar h<19> within an air duct to form an electric stove as shown in Fig. 3. The spiders and cross bar mav be integral and fashioned from sheet metal. Specification 264,296 is referred to.
Patent GB-476637-A (GB)
Title: Improved method for cutting out gloves
IPC: C14B5/00
Filed: 1936-06-10
Abstract: 476,637. Cutting-out gloves. JOHANSON, C. H. June 10, 1936, No. 16243. [Class 141] A method of cutting-out glove blanks from a sheet 2 of stretchable material comprises first stretching the sheet 2 uniformly in one direction, then marking upon it a series of equal zones by means of lines 3 transverse to the direction of stretch, and then stretching the sheet 2 in a direction transverse to the direction of the first stretch until the zones have contracted uniformly to a suitable degree, the sheet 2 being then marked out in zones of 'width equal to the original width of the first zones by means of lines 5 transverse to the direction of the second stretch, and the glove blanks are cut out from the prepared sheet 2 by means of dies such as 10 having index markings 11 which register with the lines 3 of the contracted zones, so that the glove blanks will have a capacity for stretching transversely to the lines 3.
Patent GB-801709-A (GB)
Title: Organosilicon polymers
IPC: C08G77/46
Filed: 1957-05-22
Abstract: Organosilicon polymers having the unit general formula <FORM:0801709/IV (a)/1> wherein each R is a saturated aromatic, halogenated saturated or halogenated aromatic hydrocarbon-radical, R1 is an alkylene radical having at least 2 carbon atoms, m is 0, 1 or 2 and n has an average value of at least 1, may be made by reacting a dialkenyl ether of a glycol or polyglycol with (a) a silane of the formula RmSiHCl3-m in the presence of a catalyst, e.g. chloroplatinic acid or platinum on charcoal, and hydrolysing the resulting chlorosilane, or (b) a siloxane containing a hydrogen atom bonded to each Si atom or a copolymer thereof.  The polymers may be copolymerized with siloxanes of the unit general formula Rx111SiO4-x/2 in which R111 is a monovalent hydrocarbon radical and x is 0, 1, 2 or 3.  Examples are given of organosilicon polymers made in the above manner, and of copolymers thereof made in conventional manner.  Uses.-As cosmetic additives, lubricants for organic fibres and as surface-active agents.
Patent GB-212473-A (GB)
Title: Improved method and apparatus for grinding crank-shafts
IPC: B24B5/42
Filed: 1923-06-23
Abstract: 212,473. Kellenberger, L. June 23, 1923. Spindles and the like, treating.-Crank-shafts and crank-pins are ground by means of two grinding-wheels a, b carried by an arm e pivoted at f to a fixed support, the wheels being driven by pulleys c, d the axial length of which, as shown in Fig. 3, is such that the outer face of a pulley does not project beyond the outer face of the grinding-wheel driven by the other pulley. The pulleys are driven from a pulley k by a belt or cord i which passes round a guide-roller n and over an obliquely-placed pulley o, which may be adjustable to tension the belt. The mounting of the grinding-wheels and pulleys on the arm e is shown in Fig. 4, a flanged disc p having a central pin journaled in the arm forming the support for the wheel and also one face of the pulley, a ring q forming the other face. The wheels are brought into operation successively by movement of the arm about its pivot by a, screw g, or by cams &c. The wheels a, b may be mounted obliquely on the arm. The apparatus may be mounted on a lathe or may form an independent machine. In a modification, the crank-shaft is stationary, and the mechanism rotates about the shaft.
Patent GB-1267655-A (GB)
Title: Method of preparing classified aggregates
Inventor: QUINN NORBERT
IPC: B02C17/00
Filed: 1968-04-05
Abstract: 1,267,655. Ball milling. W. & C. SPICER Ltd. 1 April, 1969 [5 April, 1968], No. 16408/68. Heading B2A. [Also in Division Cl] Classified aggregates of high packing density are made by ball-milling raw material in the dry state with grinding elements or balls for not more than 2 hours, removing the milled material from the mill and separating the product from the grinding elements or balls and any oversize material, e.g. by sieving the largest grain size of the aggregate raw material is approximately equal to the largest grain size theoretically required in the classified aggregate. This raw material may be jawcrushed before milling to achieve the grain size. The grinding elements may be lumps of the same raw materials as, and in an equal quantity to, the aggregate raw material. The milled products have a particle size distribution giving a high packing density in vibration casting. Specified aggregates are alumina, fused magnesia, fused zirconia and silicon carbide. In an Example, jaw-crushed fused zirconia passing a 5 BSS sieve is milled with 1-2 in. dia. lumps of fused zirconia as grinding elements. Maximum packing density is achieved in 20 mins. Silicon carbide achieves maximum packing density in about 80 mins.
Patent GB-474994-A (GB)
Title: An improved steel house
IPC: E04B1/08
Filed: 1936-06-12
Abstract: 474,994. Walls ; roofs ; slabs. SCHMUCKLER, H., and NETTER & JACOBIWERKE, KOMMANDIT-GES. AUF AKTIEN, W. June 12, 1936, No. 16414. [Classes 20 (iv) and 87 (i)] The walls and, if desired, the roof also, of a building are formed from standard structural elements each comprising a steel plate 1, which is provided on its inner face with stiffening ribs 2 near the ends, and a layer 3 of insulating material, and such elements are connected together with the employment of inner strips 5 of insulating material covering the ribs 2 and joints between adjacent elements. The insulating layer 3 mav be of cork plates which are united to the steel plate 1 by an adhesive such as bitumen, and with or without an intermediate layer of asphalted cardboard. The union between the layers 1, 3 may be improved by clamps, brackets or the like 8. The ribs 2 may be of angle or Z-cross-section and welded to the steel plate 1. The plates 1 are connected together by bolts 6, and the joint-covering strips 5 may be of cork and secured in position by bitumen or the like. The spaces behind the strips 5 are filled with plastic or liquid insulating material, in which service pipes 9 may be embedded. The insulating material used for the layer 3 and for filling the spaces between the plates may be paper pulp, bitumenized cork scrap, concrete mixed with grit, &c. An angle-iron sill 10, 12, having ribs 11 as shown in Fig. 2, is secured in place by cement 14 which is poured through holes 15 in the base of the angle-iron. The wall plates are slotted at 13 for engaging slidably the sill 12, and the upper edges of the plates are attached to a girder of U-cross-section which may be filled with insulating material. The roof of the building may be formed similarly to the walls, and secured by brackets to the girder at the top of the wall.
Patent GB-515440-A (GB)
Title: Improvements in or relating to servo brake operating mechanism for vehicles
IPC: B60T15/04
Filed: 1938-06-01
Abstract: 515,440. Fluid-pressure brakes. OTTAWAY, E. C., WILLETT, S. E., LONDON PASSENGER TRANSPORT BOARD, and CLAYTON DEWANDRE CO., Ltd. June 1, 1938, No. 16420. [Class 103 (i)] In a manually operated selflapping valve for fluid-pressure brakes, that is controlled by a piston subject to brake cylinder pressure opposed to the pressure of a spring that is stressed by the pedal movement, a second spring which reacts on the pedal but not on the piston comes into action after a moderate brake application has been made so as to increase the rate of change of pedal pressure with cylinder pressure. A further spring may come 'into action between the pedal and the piston at about the same time as the second spring. The compressed air supply, brake cylinder and exhaust are connected respectively to ports 2, 3, 4. The supply and exhaust valves 5, 12 are carried by a rod 8, the valve 12 being arranged to seat on a passage 13 through the piston 11 which is subject to brake cylinder pressure through ports 3,24. Movement of the plunger 16 by the pedal and rod 16a moves the piston 11 by the spring 17 to seat the valve 12 and lift the supply valve 5. When the cylinder pressure on the piston 11 is sufficient to overcome the pressure of the spring 17 the piston moves back and the valve 5 closes. When a moderate brake application has been effected, the plunger 16 engages the seating ring 20 of a spring 21 which may be precompressed between that ring and a fixed ring 22, the resistance of this spring being thus added to that of the spring 17 with further pedal movement. When or just before the spring 21 is engaged, the plunger 16 may engage a further spring 26 which abuts on an extension 18 of the piston 11 so that the pedal movement for a given increase of cylinder pressure is reduced during the second stage of brake application. The casing 1 may be fixed or may be connected through a lever to the brakes to enable the brakes to be applied by direct pedal pressure assisted by the fluid pressure.
Patent GB-665502-A (GB)
Title: An improved animal trap
IPC: A01M23/26
Filed: 1949-06-21
Abstract: 665,502. Animal traps. WILLIAMSON, J. June 9, 1950. [June 21, 1949] No. 16424/49. Class 5(i). Pivoted spring jaws 12 are held by catches 22. Two platforms 16, pivoted in the frame, are connected by rods 19 to the catches 22, so that depression of either platform actuates the catch at the other end of the trap and releases one of the jaws. The consequent vibration is relied on to release the companion jaw. Bails 23 act as retention means during setting.
Patent GB-124386-A (GB)
Title: Improvements in and relating to Mixing or Agitating Appliances.
Inventor: SHARP ROBERT FRANK
IPC: B01F7/00
Filed: 1918-10-09
Abstract: 124,386. Sharp, R. F., and Gardiner, A. Oct. 9, 1918. Stationary batch-mixers with rotary stirrers.-Re lates to mixing or agitating appliances of the kind having arms or blades pivotally mounted on a rotatable spindle and adapted to fold alongside the spindle to permit of their introduction into a can &c. The arms e, Fig. 2, are so mounted on the spindle c that, when collapsed, they extend below it sufficiently for the lowermost arms to contact with the bottom of the vessel, so that on applying pressure, the arms are extended into their operative positions. The spindle is carried by a cover b adapted to close the mouth of the can, and the outer ends of the bars e are pivoted to bars f. A pinion g on the upper end of the spindle gears with a pinion h actuated by a handle i. The cover is provided with a lip having a hinged flap k, Fig. 3, and the spindle is held in position by a bush or nut l. The cover has a groove o for the washer and may be secured by a bayonet-joint. A bayonet-joint or other cap is provided for closing the cam when the beater is removed therefrom
Patent GB-700571-A (GB)
Title: Plansifter sieve cleaning device
Inventor: LEGGETT PERCIVAL ARTHUR
IPC: B07B1/52
Filed: 1951-07-11
Abstract: 700,571. Sifting-apparatus. TURNER, Ltd., E. R. & F. July 9, 1952 [July 11, 1951], No. 16472/51 Class 117 [Also in Group XXIII] Plansifter floating sieve cleaning device comprises a brush stock of resilient material having bristles on one face and a button on the other. The button which is of hard rubber rides freely over a coarse wire mesh 3 as the sieve gyrates and causes the brush to tap the under-side of the sieve mesh 1. The stock of the brush is of relatively soft rubber and bristles are provided on the periphery of the upper surface instead of the usual frayed edged fabric pad
Patent GB-169241-A (GB)
Title: Improvements in mowing and reaping machines
IPC: A01D34/14
Filed: 1920-06-18
Abstract: 169,241. Bamford, S. B. June 18,1920. Reaping and mowing machines.-The drop slide bracket 1 of a reaping or mowing machine is provided with a spring catch bolt 2 having a V- shaped fore end 4, 5 adapted to engage with a correspondingly shaped lateral projection 6 on a pointed drop slide 14. The spring bolt exerts a downward and side pressure against the drop slide, thus holding it firmly against the bracket 1 and a projecting face 16 on the bolt casing but permitting it to be freed by an upward pull. The wearing surface of the slide is preferably hardened. The drop slide is secured by a pivot bolt 18 provided with a spring washer 21. In a modification, the spring bolt is mounted on the slide and the projection it engages on the bracket.
Patent GB-566640-A (GB)
Title: An improved method of securing together materials which are not capable ordinarily of being united by welding
IPC: B23K11/16
Filed: 1943-10-08
Abstract: 566,640. Welding. CONSTANTINE, W. W. Oct. 8, 1943, No. 16528. [Class 83 (iv)] Joints.-In joining materials for aircraft &c. not ordinarily capable of being united by electric welding, such as plastics, either together or to a metal base by the known method of rivetwelding through holes in the plastic material, the rivet or part-rivet or the wall of the hole is, first protected with a material which is a non-conductor of electricity. Metallically reinforced plastics are thus prevented from damage by the welding current. The non-conducting material may consist of a plastic or lacquer preferably loaded with aluminium oxide or other insulating medium, paper, or a coating on the rivets produced by anodising. Truncated conical metallic rivets or half rivets 5a may be used with countersunk holes, the coating 6 being applied either to the rivets or to the holes in the reinforced plastic 8a, 8b.
Patent GB-1390554-A (GB)
Title: Vehicle seats
IPC: B61D33/00
Filed: 1972-04-11
Abstract: 1390554 Upholstered seats UNIVERSAL OIL PRODUCTS CO 9 March 1973 [11 April 1972] 16547/72 Heading A4M A vehicle seat comprises a hollow shell 10a-d to which is secured a cushion 12 comprising foam padding with a cover secured by adhesive and/or clips to a border frame 17, the frame 17 being secured to the shell along its forward and rearward edges by hook-shaped lugs 20 and along its side edges by releasable snap fasteners comprising pins 22 mounted on the shell and engageable by spring-loaded detents 21 mounted on the frame 17. The securing means for the cushion is normally concealed and requires distortion of the upholstery and frame to effect release so as to be vandal resistant. The back panel 10d of the shell is secured to the front panel by bolts 16 engaged with captive nuts. The shell includes means for mounting a hand rail and an upstanding, rear glass panel. The seat is mounted on a base 11 which receives heating equipment.
Patent GB-474357-A (GB)
Title: Improvements in or relating to the manufacture of phonograph disc records
IPC: G11B3/70
Filed: 1937-06-16
Abstract: 474,357. Making matrices for phonograph records by electrodeposition. ELECTRICAL RESEARCH PRODUCTS, Inc. June 16, 1937, No. 16683. Convention date, June 30, 1936. [Class 41] The surface of a wax or thermoplastic original or intermediate record is made conductive by sputtering gold thereon and a matrix of copper is electroformed on the gold surface ; the matrix is separated from the record with the gold adhering to it and heated to cause the gold to diffuse into the copper. Loosening of the gold coating produced by subsequent nickel or chromium plating of the matrix is thereby obviated. The heating is effected in the absence of oxygen, e.g. by immersion in oil at 250‹ C. Specifications 378,355; and 388,431, [Group XXXVIII], are referred to.
Patent GB-229181-A (GB)
Title: Improvements in stuffing box and like packings
IPC: F16J15/44
Filed: 1924-07-11
Abstract: 229,181. Prestige, J. T., (Duchatel, E. E. H.). July 11, 1924. Stuffing - boxes, substitutes for; packing, metallic. - Packing comprises an assemblage of rings d with recessed faces forming expansion grooves between the rings. Each ring has a spherical face and a concave conical face, the conical face of each ring forming a seating for the spherical face of the adjacent ring. The packing is contained between end rings e, f, having a conical and a spherical face respectively, and is pressed axially by a spring g or otherwise. The inner peripheries of the flanges d<1> may be grooved.
Patent GB-1048411-A (GB)
Title: Improvements in or relating to counting machines
Inventor: PRICE PETER RALPH
IPC: G06M9/02
Filed: 1962-05-01
Abstract: 1,048,411. Counting-apparatus. J. V. BAILEY, G. C. FORTIN, P. R. PRICE, G. BUCKLE, A. VALVONA, and C. L. SMEDLEY. July 31, 1963 [May 1, 1962], No. 16717/62. Heading G4D. Apparatus of the type described in Specification 839,479 checks the number of banknotes in bundles intended for destruction. Bundles containing the correct number are directed to an incinerator and registered on an appropriate counter. Detection of an incorrect number directs a bundle to a checker with operation of another counter, while a third counter registers the total number of bundles dealt with. The numbers are printed periodically. Several checks for security and accurate operation are provided. The device for counting the notes in a bundle may be as described in Specification 887,703.