baber/WOPTO huggingface dataset:
Patent GB-755216-A (GB)
Title: Improvements in or relating to recovery of cyclopentadiene and methylcyclopentadieneby liquid vapor phase cracking
IPC: C07C4/22
Filed: 1953-08-10
Abstract: Cyclopentadiene is recovered from a cracked petroleum fraction containing from 20-93 wt. per cent of dimers or codimers of the said compound and methyl cyclopentadiene and boiling at from 150 DEG  to 220 DEG  C. by heating the petroleum fraction in the vapour phase for a time of 1 to 30 seconds to a temperature sufficient to convert the dimers and codimers of the two said compounds to monomers while simultaneously contacting the vapours in a cracking zone countercurrently with a thermally stable organic liquid heated to a temperature of 300 DEG  to 500 DEG  C., cooling unabsorbed vapours leaving the cracking zone to liquefy C6 and above monomers in a first fractionating zone and recovering separated cyclopentadiene.  The liquid condensate from the first fractionating zone may be transferred to a second fractionating zone for the recovery of methyl cyclopentadiene.  The preferred starting material is a steam-cracked petroleum fraction containing 55 to 82, preferably 60-75, wt. per cent of dimers and codimers of the two cyclodienes, wherein at least 85 volume per cent boils between 170 DEG  and 220 DEG  C.  The thermally stable liquid, which may be a saturated hydrocarbon oil having a minimum boiling point of 370 DEG  C., is heated in a furnace, fed to the cracking tower, preferably at multiple points such that all zones of the tower operate at about 350 DEG  C., and returned from the bottom of the tower to the furnace.  Instead of injecting hot oil at various points, the tower may be heated electrically to maintain a temperature of about 350 DEG  C.  The overhead vapours from the cracking tower, maintained at 220-230 DEG C., are fed to a first fractionating tower having 10-15 plates and quenched to 70-80 DEG  C. by the liquid reflux of methyl cyclopentadiene.  The cyclopentadiene is removed overhead at about 450 DEG  C., and the bottoms are fractionated in a second tower to obtain methylcyclopentadiene.  Examples are given.
Patent GB-1282353-A (GB)
Title: Improvements in or relating to fluid flow indicating devices
IPC: G01F1/24
Filed: 1970-05-08
Abstract: 1282353 Indicating rates of fluid-flow G W SEULEN [trading as HONSBERG & CO KG] 30 Nov 1970 [8 May 1970] 22239/70 Heading G1R A fluid-flow indicating device comprises a spring-loaded piston 6, 5 with one end 15 extending through an aperture 45 in a wall 44 which divides a chamber into inlet and outlet portions 42, 43, the piston having a hollow portion, open at its opposite end, a ring magnet 50, 7 surrounding a part of the hollow portion, a tube 8 adjustably mounted in relation to the chamber and located  within the hollow portion, a dry reed contact unit 4 located within the tube, the interior of the tube being isolated from the fluid in the chamber and the arrangement being such that the piston 5 is moved against the spring 6 by fluid-flowing through the chamber and the contact unit is actuated by the magnet when there is a predetermined rate of fluid-flow through the chamber from inlet 40 to outlet 41. As described the piston has a tapered  end 15.
Patent GB-1039916-A (GB)
Title: Control arrangements employing a.c. rotary inductive machines
Inventor: WATTERS ALFRED STEPHEN
IPC: B21B37/46
Filed: 1964-05-29
Abstract: 1,039,916. Automatic speed control. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 26, 965 [May 29, 1964],No. 22252/64. Heading G3R. [Also in Division G1] In a system for controlling the speed of edger rolls, the output voltage of machine LV1 is linearly proportional to the screw-down setting of the unloaded main rolls of a rolling mill, a machine LV2 memorizing the setting for the first pass and producing an output corresponding to such setting. The output voltage of the machine LV1 is then modified in dependence upon a new screw-down setting of the main rolls, the respective output voltages from the machines LV1, LV2, being corrected by devices VC1, VC2, to compensate for mill stretch. The corrected output voltage from machine LV2 is amplified and applied to machine LV3 whose rotor shaft takes up a position indicating the ratio between the thickness of the workpiece before and after rolling. This ratio is signified by the position of potentiometer P. The output voltage of tachometer generator TG is proportional to the speed of the main rolls, potentiometer PX being adjusted in accordance with the ratio between the radii of the main and edger rolls. The output from potentiometer PX is applied to potentiometer P through a buffer amplifier, thereby affording a speed reference voltage for controlling the drive of the edger rolls.
Patent GB-673905-A (GB)
Title: Improvements in or relating to navigable vessels
IPC: B63B1/04
Filed: 1949-08-30
Abstract: 673,905. Ship's form. SCOTT, T. N. Aug. 3, 1950 [Aug. 30, 1949], No. 22453/49. Class 113 (ii). A hull of completely closed form has its halfbreadth plan and its below water profile following the same curve, its fore-body sections being complete circles. The after body below water is provided with diverging fins, the sections of which are formed with radial lines from the diagonal point B connected by circular arcs with centres on the diagonal line OB. The above water after body is formed of circular arcs tangential to the radial lines from B and with centres on the middle line.
Patent GB-222648-A (GB)
Title: Improvements in or relating to packing needles, and the like, and a method for manufacturing the same
IPC: B21G1/00
Filed: 1923-09-08
Abstract: 222,648. Wharrad, L. A. Sept. 8, 1923. Sewing-needles. - A packing-needle is manufactured by pointing one end of a flat wire 1, Fig. 2, by a diagonally-directed transverse grinding operation or by stamping, and thereafter grinding two or more faces of the wire around the pointed end. The point of the needle is preferably curved away from the base of the triangular base formed thereon. To form an eye therein, the blunt end is ground diagonally to form diametrically-opposed faces 5, 6, Fig. 7, which are pierced by the eye 7. A modified eye 8, Fig. 8, may be formed by means of a circular saw, a slot 9 being made for the entrance of the thread.
Patent GB-970199-A (GB)
Title: Method of fabricating a structural unit
IPC: C08L95/00
Filed: 1963-06-06
Abstract: A bituminous composition for use in fabricating a structural unit, e.g. for the construction of dykes, dams, breakwaters, jetties, locks, bridges and railway embankments, is made by mixing coarse stones, i.e. stones having a dimension greater than 50 mm. and preferably less than 500 mm., bitumen and sulphur. The composition is heated to a temperature of from 120 to 160 DEG C., poured into a mould, and then allowed to cool to a temperature lower than 120 DEG C., before releasing from the mould.  A mineral aggregate, e.g. a mixture of stones having dimensions less than 50 mm., sand and/or a filler of ground limestone or shale may also be included.
Patent GB-865116-A (GB)
Title: Improvements in or relating to agricultural implements having draw-bars
IPC: A01D78/00
Filed: 1957-07-17
Abstract: 865,116. Draw gear for agricultural implements. VAN DER LELY N.V., C. July' 17, 1957 [July 27, 1956], No. 22651/57. Class 103(5). A vee-shaped draw bar 21, Fig. 1, is provided with a bearing 22 co-operating with a pivot pin 23 horizontally mounted on an agricultural implement such as the swathe turner shown. The draw bar may rotate slightly about the pin 23 when the implement is in use, and the tractor wheel may enter the vee as in 25B when turning. The draw bar may be pivoted to the dotted position for towing the implement on roads. In modifications the vee arms may be made adjustable in length, or one arm may be rotatably adjustable in a horizontal plane with respect to the other, Figs. 2 and 3 (not shown). In Fig. 4 the draw bar comprises arms 51, 54 which provide a first axis of rotation about the pin 56 and a second axis of rotation about the pin 53, so that the coupling 52 may have either of the positions shown or two further positions obtained by rotation about the pin 56. In another embodiment, Figs. 5 and 6 (not shown), the draw bar may be vertically offset from the plane containing the first axis of rotation, and in a further embodiment one arm of the vee is telescopically adjustable and the draw bar is rotatable about either vertical or horizontal intersecting axes. In Fig. 10 the draw bar may be pivoted about its first axis 80 to a further forward dotted position. In Figs. 11 and 12 (not shown) the coupling itself is rotatable about a pivot pin 84 lying parallel to the first axis of rotation, and in yet other embodiments two different arms spaced 90 degrees apart in a vertical plane pivot for alternative use around a horizontal first axis, or a single arm rotatable about a first axis may be readily detached from the pivot of that axis.
Patent GB-496699-A (GB)
Title: Improvements in or connected with knife mechanism for wrapping machines
IPC: B65B61/06
Filed: 1937-08-19
Abstract: 496,699. Cutting webs. FORGROVE MACHINERY CO., Ltd., and BROOK, L. Aug. 19, 1937, No. 22736. [Class 31 (i)] [Also in Groups XVII and XVI] Wrapping machines, for example machines such as are described in Specification 396,212, [Group XVII], are provided with means for facilitating the feed of an additional wrapper with the main wrapper. When a sufficient length to form a wrapper has been drawn forward by the grippers, a length is cut off by a knife a. The knife is pivotally mounted at a2, Fig. 5, on a vertical axis in a block on a horizontal axis a<3>, and co-operates with a shear plate c mounted on a vertical axis c<1>. After the cutting stroke has been made, the plate c is moved about its pivot away from the cutting position, as shown in section in Fig. 6, and the knife a is also moved away downwards to allow grippers f space to operate. The plate c is formed with a curved part c<7> so that the knife a is impelled into contact with it by a spring a<1> in all positions.
Patent GB-925587-A (GB)
Title: Process for the production of alkali metal perborate
IPC: C01B15/013
Filed: 1959-07-02
Abstract: Alkali metal, particularly sodium, perborates are prepared by reacting the corresponding metaborate or compounds which will form it, with an aqueous solution of hydrogen peroxide which has been obtained by the anthraquinone process in which the content of residual organic matter in the crude peroxide has been reduced to 0,005 to 0,1 grams per litre by extraction with a water-immiscible organic solvent or through partial distillation. Total evaporation of the crude anthraquinone hydrogen peroxide is not necessary; distillation of 10% will remove 90% of the organic constituents and the organic fraction separated may be added to the working solution for the production of the hydrogen peroxide by the anthraquinone process.  A suitable water-immiscible organic solvent is coke gas benzene.  According to examples (1) the crude working solution from an anthraquinone process is washed with water to produce a 10% hydrogen peroxide solution and the entrained organic constituents therein are then reduced to less than 0,1 grams per litre by washing with coke gas benzene.  The solution is then fed to a vessel together with borax and sodium peroxide at a temperature of 15-20 DEG C. Higher yields are obtained if the temperature is reduced to 10 DEG C. (2) anthraquinone hydrogen peroxide working solution is washed with water to produce a 20% hydrogen peroxide solution which is subjected to partial distillation whereby a 30% hydrogen peroxide solution containing 0,065 grams per litre of impurity is recovered and reacted with the metaborate solution as in Example 1.
Patent GB-597223-A (GB)
Title: Process for the production of ethyl benzene
IPC: C07C2/68
Filed: 1944-11-17
Abstract: Ethyl benzene is produced by reaction of benzene and ethylene in the presence of a Friedel-Crafts' metal halide and, as a promoter, a hydrogen halide and/or a halogenated methane or ethane in an amount of 20 to 100 mole. per cent based on the ethylene. Aluminium chloride is the preferred catalyst.  Zinc and iron chlorides are also specified.  Promoters include hydrogen chloride, ethyl chloride, carbon tetrachloride and chloroform. Reaction temperatures are generally 140-200 DEG , e.g. 160 DEG  F., and molar ratios of ethylene to benzene from 0.2-0.4 to 1.  In an example, the increase in yield per unit of aluminium chloride with increases in the concentration of hydrogen chloride up to 26 mole. per cent is illustrated.  The Specification as open to inspection under Sect. 91 is not restricted as to the amount of promoter used, 3 per cent of hydrogen chloride, and 10 per cent of ethyl chloride being specified. This subject-matter does not appear in the Specification as accepted.
Patent GB-1493444-A (GB)
Title: Self biased magnetic structure
IPC: H01F10/187
Filed: 1975-05-23
Abstract: 1493444 Magnetic bubble devices INTERNATIONAL BUSINESS MACHINES CORP 23 May 1975 [25 July 1974] 22917/75 Heading H3B A self-biased magnetic bubble device includes a substrate 17, a bubble supporting layer 10 of thickness h and "material length" I which is an experimentally determined characteristic of the material related to the diameter of a domain at which the domain collapses in response to an increasing bias field, and a bias layer 15 exchangecoupled to the storage layer 10 and having parameters h', I' such that h<SP>1</SP>/l<SP>1</SP><h/l and being sufficiently thin as to remain in a single domain state. The bias layer 15 allows the bubble interface 12 to lie in the bias layer rather than in the storage layer by virtue of the bias layer having a longer material length, i.e. being magnetically softer than the storage layer. The ratio h/l is preferably between 4 and 10 and h<SP>1</SP>/l<SP>1</SP> less than unity, typically 0À5 or less. In an example a bias layer of is grown on a substrate then a storage layer of on top, optionally with a drive layer 18.
Patent GB-1149084-A (GB)
Title: Improvements in or relating to spectrometers
Inventor: KLEINWAECHTER HANS
IPC: H01J49/30
Filed: 1966-05-24
Abstract: 1,149,084. Mass spectrometers. H. KLEINWAECHTER. 24 May, 1966 [24 May, 1965], No. 23003/66. Heading H1D. A mass spectrometer comprises at least two homogeneous, parallel-sided magnetic prisms successively traversed by the ion beam to produce a total mass dispersion analogous to that of two successive optical prisms. Electric or magnetic focusing fields are provided before and after the dispensing system. As shown in Fig. 4, 2 and 3 are magnetic dispersing prisms and 1 and 4 are magnetic focusing fields. The prism deflection angle need not be 45 degrees (Fig. 5). The system may include three magnetic prisms so arranged that the beam forms a loop intersecting in a magnetic field-free space (Figs. 6 and 7), or in a magnetic deflection field of configuration 10 or 11, Fig. 8, the initial beam, from source Q, and the final beam falling on collector Af, being in a straight line and the beam passing through the prisms 9 and twice through the deflection field 10, 11. Focusing is achieved by electric lenses 12, 13. The vacuum chamber is constructed in the form of a closed ring. Other similar prism configurations with three or more prisms 9 are described (Figs. 9, 10 and 13). In the double system of Fig. 11 positive and negative ions are simultaneously recorded at the collector Af. A velocity focusing electric radial field may be provided in advance of the dispersing fields (Fig. 12).
Patent GB-736771-A (GB)
Title: Improvements in or relating to centre weft fork motions for looms for weaving
IPC: D03D51/34
Filed: 1949-09-06
Abstract: 736,771. Weft stop-motions for looms. HARGREAVES, N. Sept. 6, 1949, No. 23016/49. Class 142(2). In a centre weft fork motion the tippler is held against the cam slide by a torsion spring. A spring 14 has two cranked arms 14B, 14C. The arm 14C engages a slot 15 and a hole 17 in a bracket 5 secured to the slay. The arm 14B engages a projection 11 on the tippler, which may be recessed to accommodate the spring, and presses the portion 12 of the tippler against the upper surface of the cam slide 7.
Patent GB-229597-A (GB)
Title: Improvements in frames for bags and the like
IPC: A45C15/06
Filed: 1924-09-30
Abstract: 229,597. Kayser, E. Sept. 30, 1924. Bags.-The knob of a frame of a bag or the like is fitted with an electric lamp connected with a battery disposed within the container. In the form shown in Fig. 3 a lamp f is screwed into a reflector e the threaded rim of which is secured to the hollow lower part d which contains an insulating mass g supporting a contact plate h connected to one lead, the other contact being made through the casing. In the form shown in Fig. 5 a hinged, spring-controlled cover m is provided upon opening which contact is established between the casing and the lamp socket r through spring fingers q, s.
Patent GB-974908-A (GB)
Title: A regulating system for a continuous tooling line
Inventor: HELSING ERIK
IPC: B21B37/48
Filed: 1962-06-15
Abstract: 974,908. Rolling. ALLMANNA SVENSKA ELEKTRISKA A.B. June 15, 1962, No. 23054/62. Heading B3M. [Also in Division G3] In an arrangement wherein a material being rolled is fed in a straight line between stands 12, 22, 32, 42, 52, the stands are resiliently mounted so that the position of the stand is a measure of the difference in the tensions on the two sides of the stand. The difference in tension is sensed by a device as disclosed in Specification 970,196. A stand 32 is arbitrarily chosen as a base to determine the production speed of the stands and a driving motor 33 is retroactively controlled in dependence on a comparison between the output of a tachogenerator 34 and a reference voltage 600. The remaining stands 12, 22, 42, 52 are speed controlled in dependence on reference voltages 601, 602, 604, 605 as modified by the tension signals from sensing devices 11, 21, 31, 41, 51 as limited by devices 101, 201, 401, 501, and amplified by proportional-integral amplifiers 102, 202, 402, 502. The control is such that the driving motor of stand 12 is controlled by tension signals from device 21 as well as device 11 and the driving motor of stand 52 is controlled by signals from devices 41, 51. The device 31 is employed when the control is modified as indicated by the dotted lines. In an addition to the arrangement screw motors for the stands are adjusted to provide coarse tension regulation.
Patent GB-1428181-A (GB)
Title: Bird food
Inventor: KERN JEAN-PAUL
IPC: A23K1/18
Filed: 1973-05-15
Abstract: 1428181 Bird food UNISABI SA 15 May 1973 [1 June 1972] 23115/73 Heading A2B A food for grainivorous birds comprises at least one substance supplying vitamins, preferably dried yeast, or vitamin mixtures or liver or herbage, at least one substance supplying amino-acids, preferably whole egg powder, although other sources, such as meat or fish may be used, at least one substance supplying trace elements, preferably a mixture of inorganic salts, at least one humectant, such as propylene glycol or sorbitol, at least one stabilising agent, such as a preservative, and at least one substance for enhancing acceptability and palatability, such as colouring and for example, parsley for flavour. The product is produced in the form of pellets resembling natural grains, and may be coated with a lipoid, sugar, or propylene glycol. The food may be combined with natural grains or seeds.
Patent GB-201064-A (GB)
Title: Improvements in or relating to packing cases
IPC: B65D43/00
Filed: 1922-08-25
Abstract: 201,064. Read, H. H. Aug. 25, 1922. Bands, strengthening.-The ends of internal binding-strips of a packing-case are secured within slots h in the top o or other element forming part of the case by headless nails m driven in from the edge of the top or other element. In packing-cases in which the sides are formed of parallel boards joined together by angle plates r, as described in Specification 186,815, the strips a may be passed through slots s in the plates. External binding strips j may also be applied to the case, the securing nails &c. being soldered over as at k.
Patent GB-1177695-A (GB)
Title: Novel Lactone Derivatives, the preparation thereof and Compositions containing the same
IPC: A23K1/16
Filed: 1967-05-18
Abstract: 1,177,695. Lactone derivatives. COMMERCIAL SOLVENTS CORP. 18 May, 1967 [29 June, 1966; 3 March, 1967], No. 23152/67. Heading C2C. Novel lactone derivatives of the general formula wherein A is -CH 2 -CH 2 - or -CH = CH-, R is hydrogen, a benzyl group or a C 1-6  alkyl group and R<SP>1</SP> is hydrogen or a halogen, with the proviso that at least one R<SP>1</SP> is a halogen, are prepared by halogenation of a derivative of the formula or the corresponding dihydro derivative formed by hydrogenation of the double bond in the heterocyclic ring thereof, or the corresponding tetrahydro derivative in which the ketone group has also been reduced to an alcoholic hydroxyl group, which in either case has the hydroxyl groups attached to the fused benzene ring protected by alkyl or benzyl radicals, followed optionally by removal of said protecting radicals; or by treatment of a lactone of the first formula above wherein at least one R<SP>1</SP> is chlorine with potassium iodide. Pharmaceutical compositions, having estrogenic activity and being useful in increasing the rate of growth of animals, comprise a nutrient ration and a lactone derivative of the first general formula above.
Patent GB-162588-A (GB)
Title: Improvements relating to racquet presses and the like
IPC: A63B60/44
Filed: 1920-08-06
Abstract: 162,588. James, W. H. Aug. 6, 1920. Racket presses.-In a racket or like press 11 having a turn-down bolt at one corner, the shaped end 8 of the bolt is pivoted within a slot 7 formed in a base-plate 4 so that in its turneddown position the shaped end of the bolt lies completely within the slot and the bolt is retained in line with the base-plate by the bottom of the slot. The base-plate 4 may be recessed into the frame of the press.
Patent GB-1282711-A (GB)
Title: Improvements in or relating to mechanical digger booms
Inventor: THORY JOHN RICHARD
IPC: E02F3/30
Filed: 1968-05-16
Abstract: 1282711 Shovel excavators; extendible booms J R THORY 15 Aug 1969 [16 May 1968] 23251/68 Heading E1F An extendible boom for mounting a digger bucket and bucket operating ram has a reel on the boom for hose supplying hydraulic or other fluid to the ram. The boom is pivotally mounted on a vehicle which may be an agricultural tractor carrying a king post 2 or a tracked excavator, Fig. 3 (not shown) and carries a bucket 9 and associated ram 11 at one end and a rotatable hose reel 17 at the other end. The reel is spring loaded to wind up the hose on boom retraction. An anchorage bracket 13 connects the ram 11 to a boom member 1b which is slidable in a main boom member 1a that is slotted to receive the anchorage bracket. Boom members 1a, 1b accommodate a ram 12 and associated hydraulic supply line 15 for effecting extension or retraction of the boom.
Patent GB-1493310-A (GB)
Title: Guiding device for reversing the direction of travel of flat metal material
IPC: B21B41/06
Filed: 1975-05-28
Abstract: 1493310 Rolling mills SOC LORRAINE DE LAMINAGE CONTINU SA and MASCHINENFABRIK SACK GmbH 28 May 1975 23263/75 Heading B3M [Also in Division B8] A guiding device for reversing the direction of travel of a metal strip 9, Fig. 1, passed through a rolling mill 1, having respective S-roller frames 6, 7, comprises guide shells 8 which are provided on their inner arcuate surfaces with a plurality of freely rotatable rollers 10, the rollers occupying on said surfaces an area having a width smaller than the said surfaces so as to provide smooth edge regions 8a, of said surfaces. Fig. 3, extending continuously along both sides of the area occupied by the rollers. The rollers project radially a distance V above the said surface.