baber/WOPTO huggingface dataset:
Patent GB-1085679-A (GB)
Title: Catalyst for the polymerisation of olefins
IPC: C08F4/68
Filed: 1966-06-22
Abstract: Olefin(s) are (co)polymerized in the presence of a catalyst made by reacting a suspension of a Group II divalent metal hydroxycloride with a halide, halo-alkoxide or alkoxide of a transition metal of Group IVa, Va or VIa in liquid form maintained at 80-180 DEG C., and activating the reaction product with an organometallic compound of a Group I to IV metal.  The catalysts are stated to be useful for polymerizing ethylene or copolymerizing ethylene and propylene. Examples describe the solution polymerization of ethylene at 90 DEG C. and 10 kgm./cm.2 in an autoclave.ALSO:Polymerisation catalysts are made by reacting a suspension of a Group II divalent metal hydroxychloride with a halide, halo-alkoxide or altoxide of a transition metal of Group IVa, Va or VIa in liquid form maintained at 80-180 DEG C. and activating the reaction product with an organometallic compound of a Group I to IV metal.  The preferred hydroxychloride is Mg(OH)Cl, the preferred transition metal compounds are TiCl4, Ti(OEt)4, Ti(OEt)3Cl, VOCl3 and VCl4. Tialkyl aluminium compounds are mentioned as organometallic compounds, tri-isobutyl aluminium being used in comparative examples.
Patent GB-503624-A (GB)
Title: An improved clamp for securing the working tools of cultivators
IPC: A01B35/22
Filed: 1937-10-14
Abstract: 503,624. Clamps. EWER, H. N., and RICHARDSON, J. H. Oct. 14, 1937, No. 28006. [Class 44] [Also in Group I] A clamp for holding a tool 1 of an agricultural implement comprises a pair of blocks 2, 3 through which an eye bolt 4 passes which grips the tool and which can be tightened by a nut 7. The blocks 2, 3 are shaped to fit a supporting bar 5 of H-section and the block 2 may be grooved to fit the tool. In the form shown in Fig. 6, a curved member 11 is interposed between the blocks 2 and the tool to allow of angular adjustment of the tool.
Patent GB-838273-A (GB)
Title: Improvements in railway car trucks
Inventor: SCHLEGEL WALTER LOTHAR
IPC: B61F5/12
Filed: 1958-09-01
Abstract: 838,273. Railway vehicle undercarriages. AMERICAN STEEL FOUNDRIES. Sept. 1, 1958, No. 28022/58. Class 103(6) In a railway car truck a box section bolster 2 is supported at each of its ends by springs 16 between spaced columns 10 of a side frame 4, the columns 10 having wear plates 38, 39 engaged by flat vertical surfaces 54, 60 of shoes 34, 36, a single spring 64, disposed between the frame 4 and the Shoe 36, urging the surfaces 38, 54 and 39, 60 into engagement. As shown, the shoes 34, 36 are positioned in pockets 30, 32 in the end of the bolster 2, the shoe 34 having converging surfaces 56, 58 to engage corresponding surfaces of webs 40, 42 of the bolster whilst the shoe 36 has an inclined surface 62 engaging a corresponding surface of a diagonal web 52 of the bolster. The shoe 34 may be welded to or cast integrally with the bolster or the surfaces 56, 58 and 62 may be crowned to compensate for any non-parallelism between the wear plates 38, 39.
Patent GB-1000911-A (GB)
Title: Thermal treatment of polyethylenes
Inventor: DOWNS GORDON WYLIE
IPC: C08F8/50
Filed: 1963-07-15
Abstract: Modified ethylene polymers are produced by heating homo- and copolymers of ethylene of density greater than 0.94 and of molecular weight greater than 20,000 in the substantial absence of molecular oxygen at a temperature from 200 DEG  to 310 DEG  C. for a time sufficient to produce a modified polyethylene having a melt index (defined) at least 15% less than the unmodified polyethylene prior to heating.  In the examples, polyethylenes produced by polymerizing ethylene in cyclohexane with a chromium oxide on silica catalyst are heat treated in bulk or while being continuously extruded.
Patent GB-1108652-A (GB)
Title: Human circulatory system simulator
IPC: G09B23/28
Filed: 1966-06-23
Abstract: 1,108,652. Apparatus simulating the human circulatory system. WESTINGHOUSE ELECTRIC CORPORATION. 23 June, 1966 [12 July, 1965], No.28043/66. Heading G5G. Apparatus simulating the human circulatory system comprises a diaphragm pump 10 representing the heart oscillated under control of a pulse-generator-operated valve 18 which allows introduction and exhaustion of air under pressure into and from chamber 13, accumulators 25, 28 representing respectively the arteries and the veins containing compressed air in regions 34, 36 respectively simulating elastic properties of the arteries and venous pressure, and one-way valves 26, 32, 29 representing respectively an aortic valve, capillary-flowrestriction and a mitral valve. A pressureresponsive transducer 50 responds to pressure variation in region 34 to produce a waveform on an oscilloscope 52. The pressure of air in the regions 34, 36 can be varied, as can the pulsing of valve 18 to produce different characteristics in the system. Each valve 26, 29 comprises a disc of flexible material, Fig. 3, having an annular groove 6 therein defining a "flapper" valve, the " flapper " portion 59 overlying a shoulder 58. By introducing a slit or hole into portion 59 a leaking heart valve condition can be simulated.
Patent GB-1520047-A (GB)
Title: Preparation of toner powder for the development of electrostatic images
IPC: G03G9/097
Filed: 1976-07-06
Abstract: 1520047 Preparing electro-photographic toner OCE-VAN DER GRINTEN NV 6 July 1976 [7 July 1975] 28068/76 Heading G2C An electro-photographic dry toner powder is prepared by dispersing irregularly shaped thermoplastics resin particles and hydrophobic silica particles with a size less than 100 nm in a carrier liquid in which the resin does not dissolve, heating the dispersion to a temperature at which the resin particles soften and accept a spherical shape and maintaining this temperature until all the particles are spherical, cooling the dispersion until the resin particles are no longer sticky separating the resin particles from the dispersion, and drying them. Exemplary resins are epoxy resin, polystyrene, copoly (styrene-butyl acrylate) and terpoly (styreneindene-acrylonitrile). The resin particles may also contain C-black, nigrosine base or diphenyl-ophthalate. The resin particles may contain iron oxide to make them magnetic.
Patent GB-1078875-A (GB)
Title: Filtering apparatus having an indicating device
IPC: B01D29/11
Filed: 1966-06-23
Abstract: 1,078,875. Filter with clogging indicator. EATON YALE & TOWNE Inc. June 23, 1966 [July 14, 1965], No. 28079/66. Heading B1D. In a filter comprising a housing with inlet and outlet 14, 16 adapted for connection in a pipe line and containing a replaceable filter element 18 (Fig. 1, not shown), a filter clogging indicator 40 comprises a piston slidable in a cylinder 38 having connections 54, 58 to locations upstream and downstream of element 18, the piston having a central annular camming portion 64, engaged by a spring-loaded ball 66, and two ends 63, 65 projecting through seals. Sufficient differential pressure across element 18 overcomes spring 68 and moves the indicator to left or right, depending on the direction of flow through the filter. The projecting end may itself be a signal or may operate a switch to trigger a remote indicator. Fig. 3 is schematic; Figs. 1, 2 (not shown) illustrating the physical arrangement. Spring 68 may be changed to vary the pressure at which the indicator operates, and hollow element 18 is changed by removing end cap (30).
Patent GB-1518325-A (GB)
Title: Memories
IPC: G06F12/16
Filed: 1975-07-04
Abstract: 1518325 Monitoring stores SPERRY RAND CORP 4 July 1975 [5 July 1974 28 March 1975] 28236/75 Heading G4A A data storage system comprises a store 10 divided into word groups, single-bit error correction circuitry 12 for words read out of the store 10, an error-logging store 16 recording information regarding corrected errors and having locations corresponding to the word groups of the store 10, each location of the errorlogging store 16 storing a corresponding tag bit which is set when an error is corrected in a word of the corresponding word group of the store 10, and a controller 28 which increments a defective device counter 30 on the correction of an error if and only if the tag bit stored in the location of the error-logging store 16 corresponding to the word group including the word in which the error occurred was not previously set. The store 10 is a matrix of 128 x 45 semiconductor bit planes, each bit plane storing 1,024 bits, there being 128 word groups each of 45 bit planes. A 45-bit word comprises bits from corresponding positions in the 45 bit planes of one of the 128 word groups, and includes 38 data bits and 7 check bits. In an error-logging mode, when an error is corrected in a word read out from the store 10, the circuitry 12 enables the controller 28 to store a set of 6 syndrome bits in the location of the errorlogging store 16 corresponding to the word group of the addressed word, the syndrome bits indicating which of the 45 bit planes of that word group is defective; at the same time the counter 30 is incremented and the appropriate tag bit is set. If, subsequently, an error is corrected in the same word group the set state of the appropriate tag bit prevents storage of a new set of syndrome bits in the error-logging store 16 and inhibits incrementation of the counter 30. The contents of the counter 30 are displayed at 32 to an operator and when a predetermined count is reached, the operator initiates an error read-out mode in which the locations of the error-logging store 16 are sequentially addressed by a counter 36. These locations and the corresponding syndrome bits are displayed at 34 so that the operator may schedule maintenance of the displayed defective bit planes. The controller 28 and a controller 38 associated with the error read-out counter 36 may comprise delay lines.
Patent GB-834073-A (GB)
Title: Chemical reaction apparatus
IPC: B01J8/00
Filed: 1957-09-10
Abstract: <PICT:0834073/III/1> Chemical reactions between comminuted solids and a liquid reagent especially a volatile liquid are controlled automatically in an apparatus in which gases formed by the reaction build up a pressure to a predetermined value; any rise above or fall below this value actuating valves controlling the flow of liquid reagent, and the admission of coolant to the reactor or to the condenser.  In the initial stage an inert gas is used until sufficient pressure is generated from the reactants when the inert gas is vented to the atmosphere.  A suitable apparatus consists of a pressure reactor 11, Fig. 1, having a vapour space 12 connected by a pipe 13 to a reflux condenser 21, both of which are provided with cooling (or heating) jackets.  Both the pressure vessel and the reflux condenser have relief vent valves 20, 26.  The liquid reagent is fed through an inlet pipe 47 and pump 46 having a by-pass return 50, and a pressure gauge 42.  The flow of reagent, pressure in the reactor, and flow of liquid in the jackets of the reactor and condenser, together with the venting valves are operated by solenoids or similar control means co-ordinated in a station 56, having a recording dial 57.  The determination of the particular values of pressures, times, and quantities are prepared for the process concerned, and are recorded on a time driven chart acting as master control at the station 56.  The main primary control governs the feed of liquid reagent until a predetermined pressure is generated in the reactor, which in turn is provided with overriding controls for limiting the flow for a time interval, for a constant quantity of reagent, and for a maximum reactor pressure.  One or more of these operate to maintain reaction conditions in accordance with the master control 56, in association with correcting means which include venting means, and increasing or limiting the flow of liquids controlling the temperature of the jackets both of the condenser and reactor.  The apparatus may be applied to the treatment of metal salts with acids to form a new salt and a volatile gaseous acid, or to the ethylation of lead-sodium alloy with an ethyl halide or other ethylating agent.
Patent GB-1481511-A (GB)
Title: Curing of elongate members of rubber or plastics material
IPC: B29C35/06
Filed: 1974-06-17
Abstract: 1481511 Curing apparatus BICC Ltd 17 June 1974 [15 June 1973] 28692/73 Heading C3E Apparatus for continuously curing an elongate body of rubber or plastics material comprises a fluid-tight elongate chamber having an internal circumferential surface that is circumferentially uniform and has a thermal emissivity that is circumferentially uniform and is at least 0À7, means at at least one end of the chamber for effecting a substantially fluid-tight seal with an elongate body passing therethrough and, associated with the chamber, at least one source of heat which is positioned radially outwardly of the internal surface of the circumferential wall of the chamber and arranged to heat that surface to a circumferentially uniform temperature. In Fig. 1, conductor 1 is covered with curable material in extruder 2 and passed through tube 3, the lower part 5 of which is filled with cooling water and the upper part 6 of which is enclosed in thermally insulating jacket 7. Part 6 may be of oxidized smooth steel, and is equipped with annular electrical heaters 8. Ports 10, 11 and 12, 13 are provided for a fluid medium, which may be heated.
Patent GB-387635-A (GB)
Title: Improvements in or relating to locking mechanisms for cash registers and the like machines
IPC: G07G1/00
Filed: 1931-12-18
Abstract: 387,635. Cash registers &c. BURROUGHS ADDING MACHINE CO., 2nd Avenue, Detroit, Michigan, U.S.A.- (Assignees of Racz, E. ; 3709, Richton Street, Detroit, Michigan, U.S.A.) Dec. 18, 1931, No. 28711/32. Convention date, Dec. 20, 1930. Divided application. [Class 106 (i).] Cash - drawer mechanism.-The drawer is normally opened automatically by the operation of the machine but by manipulating a lock-key the proprietor may lock the drawer against such release or may release the drawer without operation of the machine. The drawerlatch 53 is fixed to a rock-shaft 54 to which is also secured a yoke 56 urged clockwise, Fig. 3, by a spring 55. Pivoted to the yoke at 64 is a spring-controlled plate 62 bearing at 67 against a link 69 and normally standing below a plunger 60 operated by the machine. With the parts positioned as shown therefore, operation of the machine rocks the plate and yoke 56 counterclockwise to raise the latch and free the drawer. The forward end of the link has a lug 134 extending below tumbler levers 130, 131, 132 and normally held by them. By inserting a key 136 and turning it clockwise, Fig. 4, the levers may be raised to free the link which is then forced to the right by a lug 141 on the key engaging a pivoted dog 143 on the link and is locked in extreme position by the tumbler levers when liberated by the key. The plate 62 has now been rocked clockwise, Fig. 3, from under the plunger 60 so that operation of the machine fails to release the drawer. If the key is turned in the other direction the link is forced to the right, Fig. 3, to rock the yoke 56 and thus release the drawer, the link however in this case not being locked by the tumbler levers so that the parts return to normal position when the key is released.
Patent GB-1467424-A (GB)
Title: Adhesive compositions
IPC: C09J4/06
Filed: 1973-06-16
Abstract: 1467424 Inhibitors for cyanoacrylate adhesives BOSTIK Ltd 17 June 1974 [16 June 1973] 28717/73 Heading C3P An adhesive composition comprises one or more 2-cyanoacrylate esters wherein R is a C 1-16  alkyl or alkenyl group, a cyclohexyl group or a phenyl group, an anionic polymerization inhibitor, a free radical polymerization inhibitor and itaconic anhydride. Preferably the 2-cyanoacrylate ester is methyl-, ethyl- or allyl-2-cyanoacrylate and the itaconic acid anhydride constitutes 0À1 to 10% by wt. of the composition.
Patent GB-1274463-A (GB)
Title: Mute for stringed instrument
Inventor: KASTON HENRYK
IPC: G10D3/04
Filed: 1969-06-06
Abstract: 1,274,463. Mutes. H. KASTON. 6 June, 1969 [6 June, 1968], No. 28806/69. Heading G5J. A moulded rubber mute 27 is retained on a violin &c. string between the bridge and tailpiece by slipping the string through a cut 34 into the channel 32. In use the bridge is held in the groove between the body 28 and the clamping portion 36a, 36b. Handle 35 prevents the unlimited rotation of the mute with respect to the string. The mute may have two channels for receiving adjacent strings, Fig. 6 (not shown).
Patent GB-228999-A (GB)
Title: Improvements relating to machines for roughing out bobbin blanks
IPC: B27C7/04
Filed: 1923-11-15
Abstract: 228,999. Merchant, A. Nov. 15, 1923. Lathes; lathe centres.- In a machine for roughing out bobbin blanks, the blank 6 is delivered from the feed hopper by the member 1<a> which is then withdrawn and the blank engaged by chucks comprising centres 4 and driving dogs 4<a>, the chucks being mounted on sliding carriers 3 operated by cams 8 on a shaft 7. One of the cams is adjustable against a spring 10 to accommodate blanks of different lengths. Reference has been directed by the Comptroller to Specification 30079/10.
Patent GB-489361-A (GB)
Title: Improvements in mercury vapour lamps
IPC: H01J13/00
Filed: 1936-10-23
Abstract: 489,361. Metal vapour lamps. GOBEL, O., and RIEGELHAUPT, H. Oct. 23, 1936, Nos. 28826 and 28827. Convention dates, Oct. 23, 1935 and March 24, 1936. [Class 39 (i)] In mercury-vapour lamps of the type in which an inverted-U-tube U is adapted to be filled with mercury and the continuity of the filling is interrupted to start the lamp, the starting is effected by raising and lowering a reservoir g of mercury which is in the form of a closed expansible receptacle preferably made of rubber and connected to one or each end of the discharge vessel by flexible tubing l. Where the discharge tube is made of quartz, the leads e are taken in through glass tubes s, which are connected by flexible tubing S to reduced extensions a at the ends of the discharge tube. Enlargements p are formed at the ends of the discharge tube, to contain the mercury electrodes and the height of the mercury is automatically regulated by cooling means such as metal bands k surrounding these enlargements. For A.C. operation, the tube has two anode limbs merging into the cathode chamber which alone is connected to the adjustable reservoir. The Specification as open to inspection under Sect. 91 comprises also an arrangement in which the mercury level in the lamp is altered by a pump. This subject-matter does not appear in the Specification as accepted.
Patent GB-1268949-A (GB)
Title: A method for packaging substantially cylindrical objects and apparatus for performing the method
IPC: B65B27/10
Filed: 1969-06-06
Abstract: 1,268,949. Packaging pipes. JANSSENWILLEMSEN GRESWARENFABRIEK N.V. 6 June, 1969 [7 June, 1968], No. 28837/69. Heading B8C. Cylindrical objects are packaged by first securing one or more wires or straps 7, 8 around at least one layer 1 of objects to form a partial package, and then uniting a number of such partial packages by one or more straps 13. The straps 13 may be tied around all the partial packages as shown (also in Fig. 1, not shown); or separate, smaller straps may be provided for each pair of partial packages to unite their adjacent layers (Figs. 3, 4, not shown). A device for packaging, e.g. pipes, comprises a conveyer 16, a platform 17 which receives the pipes one by one to form one or more layers, an apparatus 18 for transferring the layers to a device 19 where the partial and complete packages are made, and a discharge conveyer 20. The conveyer 16 comprises an endless belt or chain (25), (Fig. 6, not shown), to which are engageable a number of catches (21) via a clutch 26 when a pipe is let on to the conveyer 16. Each pipe, transported by a catch 21 lies against a stop 27, and connecting arms (29), (30) fixed on rollers (33), (34) move to transfer the pipe to the platform 17. When a predetermined number of pipes is accumulated on the platform, the apparatus 18 operates to grip the pipes by two rows of gripping arms (56/58), (59/61), (Fig. 9, not shown), provided on the gripping device (43) and transfer the pipes to the device 19 on which pipe-supporting beams 5, 6, recessed or notched at the bottom, are prepositioned. The strap is tied around the first layers 1, 2 to form the first partial package. Subsequent partial packages are formed one above the other and all the partial packages are united by further straps. The whole package is then rotated about an axis (46) and discharged on to the conveyer 20 from where they are removed by a fork truck. Transverse strips 12 may be interposed between adjacent layers. The device is suitable for handling pipes of different lengths and diameters.
Patent GB-335733-A (GB)
Title: Improvements in or relating to circuit arrangements for smoothing a direct current ripple
IPC: H02M1/14
Filed: 1929-09-23
Abstract: 335,733. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 23, 1929. Converting pulsating currents into steady continuous currents.-In an arrangement comprising series chokes 5, 6 and one or more shunt condensers 8 for supplying steady current to thermionic valve circuits from a pulsating D.C. source, there is provided an additional condenser 12 one side of which is earthed and the other side is associated with a two-way switch 11 whereby the condenser may be connected to either the positive or negative lead according to which lead is earthed at the supply source.
Patent GB-1541958-A (GB)
Title: Process for preparing 2-phenyl-indole derivatives
IPC: C08K5/3417
Filed: 1977-07-08
Abstract: Compounds of formula I are prepared from compounds of formula II. The meaning of the symbols is given in Claim 1. To do this, the compound of formula II is reacted, in a first stage, with pyridine hydrochloride in order to convert the methoxy group(s) to OH group(s). This product is reacted with a compound R1X and then subjected to a saponification of the sulphonyloxy group. The compounds obtained are useful as stabilising agents for thermoplastic resins. <IMAGE>