baber/WOPTO huggingface dataset:
Patent GB-979329-A (GB)
Title: Olefin copolymers and process for preparing them
IPC: C08F10/00
Filed: 1963-05-20
Abstract: Substantially amorphous copolymers are produced by copolymerizing ethylene, a cyclo-olefin containing from 4 to 8 carbon atoms in the ring which may be substituted with an alkyl radical containing from 1 to 8 carbon atoms, and at least one a -olefin having the formula CH2=CHR in which R is an alkyl group containing from 1 to 6 carbon atoms.  Specified a -olefins are:-propylene, butene-1, methyl-3-butene-1, pentene-1, methyl-4-pentene-1 and hexene-1. Specified cyclo-olefins are:-cyclobutene, cyclopentene, cyclohexene, cycloheptene, cis-cyclo-octane and 4-methyl cyclopentene-1.  The catalysts used are preferably preformed and comprise vanadium compounds reacted with organo-metallic compounds of metals of Group Ia, II and IIIa of the Mendel<\>eeeff Periodic Table. Catalyst components exemplified are vanadium tetrachloride, vanadyl trichloride, vanadium triacetyl acetonate and aluminium trihexyl. A number of other suitable catalyst components are specified.  The copolymerization may be effected in hydrocarbon solvents of which n-heptene and toluene are exemplified.  The copolymerization reaction is terminated by the addition of methanol or methanol plus phenyl-b -naphthylamine; the copolymer then being purified by washing with hydrochloric acid and water and finally is coagulated with an acetone-methanol mixture. The copolymers may be vulcanized by mixing with sulphur, zinc oxide, phenyl-b -naphthylamine, tetramethylthiuram disulphide and mercaptobenzothiozole and heating the resultant mixture in a press.  In some of the examples radio-active cyclo-olefins are used and the proportion of the cyclo-olefin in the resultant copolymer determined by radio chemical analysis. Specification 967,836 is referred to.
Patent GB-202487-A (GB)
Title: Improvements in or relating to the manufacture of metal pipes
IPC: B21C37/12
Filed: 1922-07-20
Abstract: 202,487. Colby, F. W. July 20, 1922. Pipes with helical seams are made by bending both edges of a strip to form unequal upstanding margins part of each of which is also bent downwardly parallel to the upstanding part, then coiling so that the narrower margin enters the recess between the parallel parts of the wider margin and then pressing the parallel interengaging parts of the edges together. A metal strip is passed, preferably by a pair of feed rolls 13, through a series of pairs of rolls, 1, 3, 5, 6, 8, 10, which successively bend the edges so as to form finally a strip having hooked edges 17, 16, Fig. 14, of which the edge 17 is shorter than the edge 16, as shown in Fig. 17. The rolls of each pair are connected together by gearing and are all driven by gearing from the shaft 39. The bent strip is first passed by hand round and is then coiled about an inclined mandrel 15, the edge 17 first passing through a pair of rolls 20, 21, Fig. 3, so as to stretch it in order to allow for the greater diameter of the rib in forming the pipe. The faces of the rolls are preferably inclined so as to stretch the outer portion more than the inner portion. During the coiling operation the edge 17 passes up between the overlapping portions of the edge 16 as shown in Fig 17. The parts in this condition then pass through a pair of rolls 18, 19 which bend the part 59, Fig. 15, of the edge 16 against the edge 17 so as to compress them together and at the same time stretch the edge 16. The two pairs of rolls are driven from the shaft 39 by bevel gear 38, 37, 35, 34, 32, 31, and spur gear 23, 24, 25, 26, 27, 29. The parts of the seam may be further compressed by a pair of rolls 56, 57, shaped similarly to the rolls 18. 19. These rolls are driven from the spur-wheel 25 by a spur-wheel on a shaft 61 which is connected by bevel gear to a shaft 64, which through bevel gear 65, 66, and spur gear 68, 69 drives the roll shafts. The seams are preferably left upright and may be further connected together by spot welding or riveting.
Patent GB-574951-A (GB)
Title: Improvements relating to primary electrical batteries
IPC: H01M6/08
Filed: 1943-12-01
Abstract: 574,951. Batteries. ALPHA ACCESSORIES, Ltd. Dec. 1, 1943, No. 20091. Convention date, March 4. [Class 53] The top closure 11 of the outer zinc container 13 forming the negative electrode of a dry cell, is formed on the carbon 9, which, together with the depolarizing mass 12 is suspended by the closure within the container, the closure being permanently secured to the container. The container is provided with a shoulder 15 at its neck for supporting the closure, which may be sealed by cement at 16 and locked in position by inturning the edges 17 of the container. A jellified electrolyte is employed which partly fills the space between the container and the depolarizing mass, leaving a space 19 for accumulation of gas, the closure being so firm that it withstands considerable pressure. If the electrolyte is jellified with the cell inverted, the gas space is provided at the bottom of the cell and if an enlarged gas space is required the body 12 may be grooved. The closure member 11 may be formed of a suitable thermo-plastic material and moulded about the carbon after the cap 10 has been placed thereon. Specification 531,237 is referred to.
Patent GB-1332886-A (GB)
Title: Nuclear fuel assembly
IPC: G21C3/324
Filed: 1972-05-01
Abstract: 1332886 Fuel elements COMMISSARIAT A L'ENERGIE ATOMIQUE 1 May 1972 [7 May 1971] 20127/72 Heading G6C A nuclear fuel assembly comprises a bundle of canned fuel pins 26 disposed in parallel relation on a uniform lattice within a sleeve 14 of polygonal cross-section having slots 28 cut across the dihedrons formed by the faces of the sleeve, an internal jacket 22 of smaller thickness than the sleeve 14 being interposed between the latter and the fuel pins 26. The internal jacket 22 serves to guide the coolant and is capable of withstanding vertical stresses arising from fuel loading and unloading operations. The pressure difference between the interior and exterior of the assembly tends to apply the internal jacket 22 against the sleeve 14 which is of greater thickness and capable of withstanding pressure forces. Expansion of the sleeve 14 due for example to neutron irradiation is reduced to an appreciable extent by the slots 28 which are capable of closing in a different manner on opposite faces of the assembly, thus preventing arcuate distortion in core zones where the neutron flux exhibits a high gradient. Such a fuel assembly may be employed in a sodiumcooled fast reactor, both the sleeve 14 and jacket 22 then being of austenitic stainless steel with a relative thickness ratio within the range of 3À5 : 1 to 2 : 1. As shown, the slots 28 are aligned on a helix and are each cut across one of the dihedrons of the sleeve 14. The length of the bridge between each pair of adjacent slots 28 must not be larger than 50% of the length of a slot. The cumulated axial length of the slots along the sleeve will represent a fraction within the range of 0À2 to 1% of the total length of the sleeve. In a further embodiment (Fig. 3, not shown), the sleeve is no longer formed in one piece but is constituted by juxtaposed sections. The bottom end-fitting of the fuel assembly is joined to the head by means of the internal jacket. The cumulated length of the sections of the fuel assembly is such that when the sections are applied against each other and rest on a shouldered portion of the bottom end-fitting, there remains a clearance between the upper edge of the stack and the opposite flat face of the head.
Patent GB-481253-A (GB)
Title: Improvements in or relating to devices for igniting mercury cathode discharge tubes
IPC: H01J13/38
Filed: 1937-07-20
Abstract: 481,253. Metalvapour apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 20, 1937, No. 20128. Convention date, July 23, 1936. [Class 39 (i)] For igniting a mercury - cathode discharge device, anelec trode, which is per manently immersed in the mercury, consists of a material which has a specific resistance higher than 0À1 megohmsper em.<3>, and a high negative temperature coefficient of resistance and means independent of that from which the starting current is derived is provided by which the electrode is maintained at a suitable temperature. The electrode material may consist of zinc oxide mixed with insulating material or of boron which contains one per cent or one and a half per cent of carbon. In a rectifier, the electrode 3 and cathode 2 may be connected in series with a resistance 5 a secondary winding 6 which generates a heating current and a secondary winding which generates peak voltages for starting purposes. The moment of ignition is controlled by a condenser 9 variable resistance 10 and variable impedance 8. In another form, the electrode may be indirectly heated by an internal heater. Specification 457,742 is referred to.
Patent GB-1102001-A (GB)
Title: Gelatin hardening agents and processes
Inventor: FICKEN GEOFFREY ERNEST
IPC: G03C5/305
Filed: 1964-05-14
Abstract: Gelatin especially a gelatin silver halide emulsion is hardened by treatment with a bisaldehyde of the formula:- OHC-(CHR1)n-X-(CHR1)n-CHO where each R1 is H or alkyl of 1-6 carbons, X is -O-, -S-, -Se- or -NR2-, where R2 is H or alkyl of 1-6 carbons and each n is 1 or 2 or with a bisulphite addition compound or anhydro derivative of such a bis-aldehyde.  The hardeners may be incorporated into a gelatin silver halide emulsion before coating or an exposed silver halide emulsion may be treated prior to, during or after development with a solution containing the hardener.  A photographic developer containing hydroquinone and 1 - phenyl - 3 - pyrazolidone and incorporating hardeners of the above formula is described.
Patent GB-854074-A (GB)
Title: Transferable load containers
IPC: B65G63/00
Filed: 1958-06-24
Abstract: 854,074. Transferring freight containers to and from vehicles. PENMAN, J. S. June 16, 1959 [June 24, 1958], No. 21061/58. Class 78 (4). A load container 11 of the type which is lifted from a vehicle carrying it by rollers 12 which engage fixed ramps at the loading station, has flaps which can be allowed to fall from the position shown to a downwardly sloping position in which they engage portions of the platform of the carrier vehicle to couple the container for movement along the ramp by the vehicle. The flaps 17 can be moved to the retracted position shown by handles 19 working in guides 21. Catches 22 for locking the arms 19 are provided on both sides of the vehicle and the catches at opposite sides are released simultaneously by manipulating a handle.
Patent GB-348449-A (GB)
Title: Process for treating coals, tars, mineral oils and the like, by hydrogenation under high pressure and at high temperature
IPC: C10G1/06
Filed: 1930-07-03
Abstract: <PICT:0348449/III/1> In processes for the destructive hydrogenation of carbonaceous materials in which the materials treated are heated indirectly, superheated steam is employed for heating or cooling the reaction components prior to, during, and after the reaction.  A reaction vessel 1 supplied with carbonaceous materials from a pipe b, and hydrogen from a pipe a, the reaction products being led off through a pipe c, is surrounded by a heating jacket 2.  Steam from a boiler 3 is superheated in a coil 4 and is supplied through a three-way valve f to the jacket 2, the jacket 6 surrounding the coil for heating the hydrogen, and to an engine 7 the condensate from which is pumped by a pump P2 into an exchanger 8 where it cools the reaction products and is then returned as make up feed for the boiler 3.  The steam after passing through the jacket 2 is led through an exchanger 5 where it preheats the raw materials, the condensate being joined with the condensate from the jacket 6 and returned to the boiler 3.  In a modification the steam is positively circulated by pump through the heating jackets and exchangers, and separate superheating coils are provided for each circuit.
Patent GB-148334-A (GB)
Title: A process for the electrolytic production of dense and firmly adhering tin deposits
IPC: C25D3/32
Filed: 1920-07-09
Abstract: 148,334. Schl÷tter, M. March 15, 1917, [Convention date.]. Tin, depositing; treatment after electrolysis.- Dense adherent deposits are obtained from acid solution of tin salts of monobasic or dibasic acids and one or more colloidal substances, alkalies and ammonium being absent. A suitable solution contains 120 grm. tin sulphate and 2 grm. gelatine in a litre of water. Such solutions are suitable for depositing on copper, brass, or the like. For plating iron galvancs previously to backing with molten lead alloy, it is necessary, however, to add a phenol such as ordinary phenol or phloroglucine. The electrolyte may then consist of 150 grm. stannic chloride, 2 grm. gelatine, 5 grm. phenol, 5 grm. hydrochloric acid, and 1 litre of water.
Patent GB-148370-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B57/22
Filed: 1920-07-09
Abstract: 148,370. Detroit Sewing Machine Co., (Assignees of Smith, A. D.). Dec. 27, 1915, [Convention date]. Sewing-machines; lock-stitching by hooks. - The spool-case 66, Figs. 2 and 3, is open and trough-shaped with converging walls 89, 91 upon which commercial thread reels of differing sizes can rest. The case is pivoted at 94 to a spoolcase carrier 67, which is supported in a raceway of a rotary hook 74, and is held from rotation by the engagement of a projection 85 and a spring 88, with a fixed bar 87. The spool case carrier has thread-deflecting flanges 79, 81 and a fixed additional guide 108 projects into the path of the needle thread loop. The hook makes three revolutions for each stitch. Governing needle thread.-A simple rotary take up 53 is mounted on the machine head. The thread is guided to the take up so that the two arms of the thread-loop are close together. Reverse motion, preventing.-A single steel ball 145 rides normally between the periphery of the rotary hook and an inclined surface 147 in the frame. In any attempt to drive the machine backwards, the ball acts as a lock to prevent rotation. Feed by dogs.-The feed-bar 44 has lugs 45, extending in opposite directions from the bar, by which it is pivotally supported on the operating- links. Controlling threads otherwise than in stitchforming.-The thread tension device 114 is connected with the presser bar so that the tension is removed when the presser is raised. The return movement of the parts is not effected by the lowering of the presser, but by the needle-bar as it approaches the lowest point in its next descent. The Specification as open to inspection under Sect. 91 (3) (a) comprises also thread end cutters and thread end holders. This subject-matter does not appear in the Specification as accepted.
Patent GB-261090-A (GB)
Title: Improvements in shoes
IPC: A43C11/00
Filed: 1925-08-12
Abstract: 261,090. Dennert, H. Aug. 12, 1925. Ankle and foot-arch supports.-Separate straps 1, 2 surrounding the instep and ankle are sewn between the lining and upper of a shoe and are provided with eyeletted free ends 4, 7, extending through slits 3, 6, in the lining so that the ordinary lace 5 may be used for tightening the straps. The eyelet holes in the straps fall short of the ordinary lace holes so that tightening is facilitated.
Patent GB-203113-A (GB)
Abstract: 203,113. Mutter, K. June 30, 1922. Wickerwork.-Seamless hollow articles are made from plaited or like fabric, including wickerwork. basketwork, matwork and wattlework, by pressing flat sheets of the material into the required shape between suitably-shaped dies. The plaited or like fabric may be composed of any fibrous substance, for example reed, osier twigs, grasses, or straw. The sheets may be composed of more than one layer of the material, the several layers being secured together by a suitable binding medium, and the materials composing the layers may vary, stronger material being employed for the outer layers, which are subjected to the greater strains during the moulding operation.
Patent GB-614122-A (GB)
Title: Improvements in fluorescent screens and electric discharge tubes comprising such screens
IPC: C09K11/67
Filed: 1946-07-08
Abstract: 614,122. Luminescent materials. PHILIPS LAMPS, Ltd. July 8, 1946, No. 20335. Convention date, July 22, 1942. Drawings to Specification. [Class 39 (i)] The fluorescent screen of a discharge lamp comprises a material composed of magnesium oxide, silicon dioxide and titanium oxide. The material which may be mixed crystals of magnesium silicate-titanate clino-enstatite structure has the formula XMgO, YSiO2, ZTiO2, and the constituents are such that Z/Y+Z is between 0.001 and 0.40 (preferably between 0.05 and 0.30) and X/Y+Z is between 1.4 and 0.25 (preferably between 1.0 and 0.8). A solution of MgO in acetic acid is mixed with an acid solution of titanium dioxide or hydroxide and a solution of ethyl silicate in alcohol, and poured into ammonia, the reaction product evaporated and heated first at 500‹ C. in air and then at 1350‹ in air or oxygen for some hours. The material is blue-fluorescent and may be mixed with another material fluorescing red.
Patent GB-225906-A (GB)
Title: Improvements in and connected with steam, diesel, and internal combustion engine indicators
IPC: G01L23/02
Filed: 1923-08-11
Abstract: 225,906. Clyde, W. P., and McInnes & Clyde, Ltd., D. Aug. 11, 1923. Feeding and driving means. - A slip friction clutch arrangement to allow of uniform winding with increase of diameter is described for the take-up roll of a travelling sheet recording strip in a steam engine indicator. The gear J in gear with the recording drum is pressed against a friction washer X on the base of the take-up roll or drum D by a spring V. An additional spring H forcing a spring plate I against the gear J may be adjusted by a screw Y.
Patent GB-1098880-A (GB)
Title: Improvements in automatic liquid dispensing hosecocks
IPC: B67D7/48
Filed: 1966-05-09
Abstract: 1,098,880. Valves. R. W. WILLIAMS and J. R. WILLIAMS. May 9, 1966 [May 28, 1965], No. 20515/66. Heading F2V. An automatic hosecock comprises a closure member 7 movable relative to a tappet 11 associated with a hand lever 4 to permit closure while the hand lever is held open, such closure being initiated by means responsive to suction due to the flow of liquid when an air inlet 59 is obstructed, the closure member having a cavity to house means 35, 39 normally holding it in a fixed position relative to the tappet and suction operated means 27 for the holding means. The means 27 consists of a piston having its lower face connected to the inlet 59 by passages 44, 43, 60, 58 and 56 and its upper face to atmosphere by a passage 41. Downward movement of the piston when the inlet 59 is obstructed by the rising level of liquid allows balls 35 in the holding means to be moved radially outwards by the tappet 11 so that a spring 8 closes the member 7. A spring. loaded non-return valve 63 is provided downstream of the main valve 7. The handle 4 has three pegs 18, 19, 20 to co-operate with a spring-loaded chock assembly 22 whereby the valve may be held in one of a number of positions. A dashpot is formed in the space between the lower end of the piston 7 and the tappet guide 13.
Patent GB-870200-A (GB)
Title: Improvements in or relating to apparatus for removing dust from a body, suitably a human being wearing protective clothing
Inventor: GIDLEY KEITH EDWIN
IPC: B08B5/00
Filed: 1958-06-27
Abstract: 870,200. Pressure dusting apparatus. BASS Ltd., JOHN. June 24, 1959 [June 27, 1958], No. 20618/58. Class 8(1). A pressure dusting chamber 1, Fig. 2, suitable for removing dust from the clothing of an operator admitted through a glass door 5 in the front wall 3 of the chamber has vertically spaced horizontal rows of apertures 19 in one or both opposite side walls 15, 17 through which compressed air is admitted intermittently from inlet manifolds 23, 25 connected by ducts 27, 29, Fig. 1, to the discharge side of a fan 31 ; dust-laden air being withdrawn from the chamber through grilles 57 and a duct 55 prior to the operator leaving the chamber through a rear door 11. As shown the apertures 19 of the rows in one side wall are staggered both vertically and horizontally with respect to those of the opposite wall and the apertures of each row are closely traversed by an endless belt 41 having spaced holes 46 and passing over pulleys 39, 45 located in the manifolds 23, 25 ; the pulleys 39 being secured to shafts 33, 35 connected by sprockets 53 and chains 51 to a drive sprocket 49 and motor 47. The suction duct 55 opens into a duct 59 which extends laterally from the fan discharge duct 29 and is controlled by a pivoted flap valve 61 which in the broken line position shown results in the fan discharge air inducing dust-laden air through the duct 55. The chamber is illuminated by a lamp 21.
Patent GB-671464-A (GB)
Title: Improvements in or relating to radar systems
Inventor: BRANDON PERCY SAMUEL
IPC: G01S13/58
Filed: 1948-08-04
Abstract: 671,464. Phase difference measurements. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 21,1949 [Aug. 4, 1948], No. 20623/48.' Addition to 671,461, [Group XL (c)]. Class 37. [Also in Group XL (c)] In a phase comparator for indicating whether two oscillations of the same frequency and of substantially equal amplitude are in phase or phase opposition as used in a frequencymodulated radar (see Group XL (c)) the two oscillations are applied respectively to the grids of triodes V1 and V2 and the sum and difference of the two outputs as developed respectively across the secondaries ST2 and ST1 of transformers T1 and T2 are rectified by diodes D1 and D2, the two diode load resistances LR1 and LR2 being connected in series opposition so that the polarity of the voltage between the outer ends as shown by a meter M is indicative of the phase conditions.
Patent GB-183847-A (GB)
Title: Improvements in reciprocating engines and pumps
IPC: F02B75/26
Filed: 1922-07-28
Abstract: 183,847. Hasselberg, B. A. L., and Ostberg, K. G. July 30, 1921, [Convention date]. Engines with main shaft parallel to axis of cyilnder.-A swash-plate 8 is mounted on a ball 13 carried on a fixed longitudinally-adjustable bearing 14 coaxial with the main shaft 2 and engaged by a revolving bearing 15 mounted in a crank-pin 9 which is pivotally secured in a cuplike sleeve 10 to the main shaft. The pistons 7 have rigid rods 11 secured to cross-heads 12 engaging guides 27. The piston-rods and guides have spherical surfaces which directly or through the medium of sliding-blocks 31, 32, engage bearing-surfaces 24, 25 on the plate. Cardan-joint connections may be used in lieu of the main ball joint and slide-blocks.
Patent GB-1423854-A (GB)
Title: Heat exchanger assembly
IPC: B21D53/08
Filed: 1973-05-02
Abstract: 1423854 Brazing SOC ANON DES USINES CHAUSSON 2 May 1973 [4 May 1972] 20757/73 Heading B3R [Also in Division F4] In a heat exchanger assembly comprising a plurality of fins 2 and tubes 1 extending between tube plates 3 having header tanks A mounted thereon, lateral frame or support members 5 extending between and connected to the tube plates serve to hold together the constituent parts of the assembly during brazing, each side member 5 having associated therewith one or more transversely extending folds or corrugations 8 which serve to accommodate differential thermal expansion occurring during the brazing operation when brazing alloy on some or all of the parts is melted. As shown the fold or corrugation is provided in an elongate lug member 7 opposite ends of which are spot welded to a projecting flange 3a of the adjacent tube plate and to the lateral frame or support member 5 respectively. Each fold or corrugation 8 is formed with cut out regions or slots 8a to increase its flexibility. The header tanks 4 are connected to the tube plates 3 by folded tabs 12. In alternative embodiments (Figs. 3 and 4, not shown), the fold or corrugation is formed in the lateral frame or support member 5<SP>11</SP>, the cut out portions (8a) may be folded back to form lugs (14) spanning the fold or corrugation (Fig. 4).