baber/WOPTO huggingface dataset:
Patent GB-590455-A (GB)
Title: Improved process for the isomerisation of normal paraffin hydrocarbons
IPC: C07C5/27
Filed: 1941-11-19
Abstract: Normal paraffin hydrocarbons such as butane, pentane, hexane and higher homologues or straight-run naphthas are isomerized to their branched or iso-forms by contact with a Friedel-Crafts' type catalyst (AlCl3, AlBr3, ZnCl2 or FeCl3) activated by free halogen.  The halogen (chlorine or bromine) may be added to the feedstock or independently to the reaction zone. Alkali or alkaline earth halides may also be added.  The reaction is preferably carried out in the liquid phase.  The catalyst may be in lump or powdered form and may be supported on a carrier.
Patent GB-839276-A (GB)
Title: Apparatus for reciprocally raising and lowering the table, and the permanent mould supported by the table, in continuous casting machines
IPC: B22D11/053
Filed: 1958-05-09
Abstract: 839,276. Continuous-casting machines. CONCAST A.G. May 9, 1958 [May 9, 1957], No. 14873/68. Class 83 (1). Apparatus for reciprocating the mould 1 in a continuous-casting machine comprises a rotary cam 23 actuating a control piston 26 to direct fluid to at least two piston-rods 7 attached to the mould, thus causing it to be lowered, the return movement of the table being caused by springs 10. The casting is lowered by rolls 16 and guided by rolls 15 past cooling jets 14. The motor 46 rotating the rolls 16 also rotates the cam 23 via variable-speed gearing 19. All the cylinders are cooled by coils 33, and are connected to a fluid reservoir 30 through a valve 29. The valve 29 is controlled by a limit switch 38, which is actuated whenever the mould ascends beyond a predetermined height, and a timing device 39. A number of cams 23 may be provided on an axially movable shaft and a number of pistons 26 may be provided.
Patent GB-680940-A (GB)
Title: Improvements in or relating to means for marking roadways and the like
Inventor: BOARD MILNER HALL
IPC: E01F9/06
Filed: 1950-06-15
Abstract: 680,940. Road-marking blocks. SPEAKER & CO., Ltd., G. R. Nov. 2, 1950 [June 15, 1950], No. 14992/50. Class 87(i) A road - marking block, strip or stud 1 having V-grooves 2 in its side faces is formed with transv e r s e upwardlytapering grooves 5 in its lower face. The whole of the block &c. may be of rubber or the upper part of rubber and the lower part of rubber composition. The block &c. may be square, rectangular, circular or elliptical in plan. The upper surface may be of curved form.
Patent GB-406966-A (GB)
Title: Tool carrier for lathes, planing machines and the like
IPC: B23B27/16
Filed: 1932-05-27
Abstract: 406,966. Tool-holders for lathes &c. ROQUEJOFFRE, G., 43, Avenue du Maine, Paris. May 27, 1932, No. 15068. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 30, 1932]. [Class 83 (iii).] A tool-holder for a lathe, planing-machine or the like, particularly for cutting-off or grooving operations comprises a shank 1, the head of which is conically bored at 1<1> to receive a bush 2 which has an eccentric conical bore 21 accommodating a correspondingly tapered part 4 of the tool holding head 3. The tool 14 is of trapezoidal section and the top face is tapered off longitudinally, Fig. 16, so that its thickness diminishes from front to rear to afford clearance in groove cutting or cutting-off. The tool is clamped against a seating 3<1> in the head by means of a draw bolt 7 having an eccentric flatted conical head 8 engaging the top face of the tool. The eccentric bush may be adjusted to vary the height of the tool by means of a loose ring 10 having a pin 11 engaging a recess in the bush, the parts being then clamped by a nut 12 screwing on the stem of the head 3. The head may also be rotated round the bolt 7 to vary the angle of the tool and may in some cases be placed in the position shown in Fig. 2.
Patent GB-217924-A (GB)
Title: Improvements in and relating to elastic fluid turbine rotors and methods of avoiding tangential bucket vibration therein
IPC: F01D5/26
Filed: 1924-06-23
Abstract: 217,924. British Thomson-Houston Co., Ltd., (Assignees of Campbell, W.). June 22, 1923, [Convention date]. Vibrations, indicating, recording, and registering.-For the purpose of determining the natural frequency of the blading in high speed turbine rotors, a rotor disc 25, Fig. 1, is mounted side by side with a solid disc 23 on a shaft 22 which can be driven at different speeds. The solid disc 23 carries an electromagnet 34, the core 33 of which stands near to an iron plate 43, Fig. 3, secured to a group of blades 30 on the turbine disc. The electromagnet is energized by a continuous current and any relative movement between plate 43 and the core 33 due to vibration of the blades on the rotor will cause a periodic variation of the energizing current. This current passes through the primary of a transformer and the periodic current produced in the secondary is passed to a valve amplifier, the anode circuit of which is used to provide current for an oscillograph. A second oscillograph is subjected to an oscillating current of known periodicity is used to provide a second curve on the visual screen or photographic record as a time standard. An electromagnet 74 placed near to the path of the rotating magnet 34 causes a sharp variation in the amplified current at each revolution and provides thereby a record of the speed of the rotors. The rotating magnet 34 is secured in the end of a brass tube 37 passed through a hole in the rotor 23 and secured on either side by plates 39 fastened on the rotor and against which nuts 40 on the tube 37 are tightly screwed. If desired, vibration of the blades may be promoted by means of a steam jet from a stationary nozzle 85 which impinges, once in each revolution of the rotor, upon a projection 83 secured to the blade group. An equation is given expressing the change in the natural frequency of a blade group as the speed of revolution increases in terms of the natural frequency of the group when stationary and when a constant in the equation had been determined experimentally for blade groups of a particular character, it is not necessary to determine experimentally, the critical speeds of each rotor, if the calculated natural running frequencies give critical speeds removed 20, 15 and 10 per cent from the normal operating speed. The natural frequency of a blade group at rest may be found by subjecting the group to the pull of an electromagnet and varying the frequency of the alternating current energizing the magnet until the group vibrates.
Patent GB-816491-A (GB)
Title: Improvements in apparatus for detecting weft abnormalities in woven materials
Inventor: ROBINSON JOHN DOUGLAS
IPC: D06H3/12
Filed: 1957-05-13
Abstract: 816,491. Testing fabrics. ROBERTSON, J. D. May 13, 1957, No. 15140/57. Classes 42 (1) and 42 (2). An abnormal condition of the weft elements relative to the warp elements of a travelling woven web is detected by stretching the web by means of rollers 16 and inducing distortions of the warp elements, pivoted rollers 18, 20 being provided at longitudinally spaced locations and arranged to be engaged and actuated by different portions of the same warp elements and means responsive to the differential actuations of the pivoted rollers for signalling the presence of an abnormal condition. As shown, the rollers 16 are transversely adjustable on a frame and the upper roller 16 is urged into contact with the web by means of a solenoid 68. The web passes over four rollers on the frame and to relieve the web of tension while it is gripped by the rollers 16 one of the rollers is arranged to rotate at a higher speed than the others. The solenoids 68 may be operated intermittently and a magnetic clutch may be provided on the roller drive so that the roller is rotated faster only for the period that the rollers 16 engage the web. The rollers 18, 20 are provided with pivot shafts 19, 21 respectively which carry arms provided with steel armatures which project into the air core of each of two coils 116, 124 respectively. When the rollers are in alignment each armature will extend equal distances within the air core of each of the coils 116 or 124. When the rollers swing out of alignment in opposite directions the impedances of the coils become unequal. The coils are connected as part of an inductive bridge which is thrown out of balance when the impedance of the coils varies. Any unbalanced condition of the bridge results in a signal being transmitted to an amplifying unit whose signal may be used to control the operation of a weft straightening mechanism.
Patent GB-593330-A (GB)
Title: Improvements in moving stairway handrail drive
IPC: B66B23/24
Filed: 1945-06-14
Abstract: 593,330. Escalators. WAYGOOD-OTIS, Ltd. June 14, 1945, No. 15142. Convention date, Sept. 20, 1944. [Class 78(i)] In escalator handrails of the kind which 'has a driving tape of metal secured thereto on the inner side, said tape having driving members extending therefrom, the handrail is C-shaped in cross section and the members are formed from lips extending from the tape to form teeth. The tape 40, Fig. 6, is punched to produce teeth 50 which freely mesh with the teeth 45 of the driving wheel 30. The driving wheel has a rim 46; Fig. 3, screwed to it ..upon which the two outer parts of the tape run flat. The handrail is provided with a pocket 39 having slots 42 into which the edges 43 of the tape extend to secure the tape to the handrail. Guides 32, 33 are provided for the rail. At the lower end a guide shoe 34 directs the handrail onto and off the wheel 31. It straddles the driving tape and is adjustably mounted to serve as a tensioning device. A rounded guiding member 38 is provided to lead the handrail off at different angles to accommodate the position of shoe 34.
Patent GB-572934-A (GB)
Title: Improvements relating to vehicle steering mechanisms
IPC: B62D5/00
Filed: 1943-09-16
Abstract: 572,934. Steering motor vehicles. BURMAN & SONS, Ltd., BRIGGS, T. H., and BRIGGS, W. H. Sept. 16, 1943, No. 15200. [Class 79 (v)] Power steering-gear comprises a driving shaft a operable by a hand wheel h or the like, and having a helical connection at i with a co-axial driven shaft b connected by any suitable steering gear c and the usual rock-shaft d to the steerable wheels (not shown), powerdriven oppositely-rotating wheels j, k mounted loosely on the shaft b, and friction clutch members n, o, p whereby rotation of the driving shaft a in one direction or the other causes one of the wheels j, k to be driven and the shaft b driven in the same direction as the shaft a. In the construction shown the shaft a is formed as a sleeve nut engaging a screw thread i on the shaft b, and the three clutch members n, o, p are splined on the shaft b, the member o having a recess t engaged by a flange s on the shaft a, so that when this shaft is rotated it moves axially along shaft b and causes either the wheel j or k to be gripped between the clutch member o and either n or p, the shaft b being therefore driven by j or k. The wheels j, k are driven in opposite directions by intermeshing pinions m, m driven through a shaft u either by the vehicle engine or by an electric or fluid-pressure motor. If the power fails the shaft a drives the shaft b directly. Any reaction by the road wheels tends to tighten the grip on one of the clutch wheels j, k and oppose a frictional resistance to this reaction.
Patent GB-554562-A (GB)
Title: Improvements in or relating to composite sheet material
IPC: D21H27/34
Filed: 1941-11-26
Abstract: 554,562. Composite sheet material. BENNIE, J. Nov. 26, 1941, No. 15254. [Class 140] A composite sheet material which in some cases is waterproof is made from at least two sheets of felted or matted fibres glued or stuck together with one or more interposed sneets of wire netting or expanded metal, the material being fireproofed with sodium silicate with or without magnesium chloride. The fibrous sheets may consist of paper, fibre-board, asbestos, or of felt or paper impregnated with bitumen, tar, fluxed pitch, or asphalt and they may incorporate vegetable, animal or mineral fibres alone or in admixture, such fibres including wool, fur, hair, paper, asbestos and slag. The sheets may also incorporate a filler, e.g. of inert mineral material such as ground limestone, chalk, whiting, powdered slate, china clay or asbestos, Size or lees may be used for sticking the layers together and the material may be consolidated by pressure rolls. The fireproofing material may be applied to one or both faces of the constituent sheets, more than two fibre layers may be employed. The material may be used for making roof shutters.
Patent GB-1282837-A (GB)
Title: Moulding powders
IPC: C08G59/32
Filed: 1971-05-17
Abstract: 1282837 Moulding powder; glycidyl methacrylate copolymers FORD MOTOR CO 17 May 1971 [5 June 1970] 15257/71 Headings C3B and C3P A thermosetting moulding powder comprises : (A) a copolymer of (I) glycidyl methacrylate, (II) methyl methacrylate and (III) acrylonitrile or methacrylonitrile, and (B) a dihydric phenol as curing agent. (A) may contain 15-35% by wt. of I, 10-30% by wt. of III and 35-75% by wt. of II. A minor portion of II may be replaced by another ethylenically unsaturated monomer, e.g. styrene, vinyl acetate or an ester of (meth)acrylic acid with a C 2 -C 4  alkanol. (A) may have a M.W. of 1500- 1600, a softening point of 50-130 C. and may be prepared by solution or emulsion polymerization. Examples of (B) are bisphenol A, 2,7-dihydroxynaphthalene, 4,41 - sulphonyldiphenol, 1,1<SP>1</SP> - bis - (4- hydroxyphenyl)cyclohexane, 0,0<SP>1</SP> - bisphenol, bis - (4 - hydroxyphenyl)methane and hydroquinone. (B) may be used so as to provide 0À90- 1-05 hydroxyl groups per epoxy group of (A). The composition may additionally contain a curing catalyst, e.g. a tertiary amine, a reactive diluent, e.g. a liquid polyepoxide and a non- reactive diluent, e.g. isopropyl azelate or dioctyl phthalate. The copolymer A is suitably prepared by solution polymerization (e.g. in toluene) in the presence of an initiator (e.g. azobis-2-methylpropionitrile).
Patent GB-379283-A (GB)
Title: Improvements in devices for feeding solid articles to machines
IPC: A23N7/02
Filed: 1931-05-23
Abstract: 379,283. Cutting and slicing vegetables. SPRAY, J. W., 43, Oliver Street, and SUGGITT, R. W. L., 64, Suggitt's Lane, both in Cleethorpes, Lincolnshire. May 23, 1931, No. 15282. [Class 5 (i).] A device for feeding articles of a round, oval &c. shape such as potatoes to a cutting &c. machine consists of a pair of plates 2a, 2b hingedly mounted under spring control so as to form a trap at the discharge opening of a container and opened intermittently by a reciprocating or rotary part of the machine. The plates are mounted on hinge pins 3a, 3b cranked at one end 4a, 4b and actuated by helical springs 9a, 9b tending to hold the plates in closed position. A sliding plate 5 has a flange 5a bearing on the cranks 4a, 4b and a flange 5b engaged by a bell-crank lever 7 which is actuated intermittently by the cross-head 8 of the machine. The plates are slightly turned up at adjacent corners 2c, 2d so that in the open position they form an obstruction at one end of the discharge opening of the container.
Patent GB-1057187-A (GB)
Title: Suction-type floor polishing machines and other surface treating apparatus
IPC: A47L11/20
Filed: 1964-04-14
Abstract: 1,057,187. Vacuum-cleaner dust bag. ELECTROLUX Ltd. April 14, 1964 [April 26, 1963], No. 15292/64. Heading B1T. [Also in Division A4]. A suction-type floorpolishing machine comprises a dust-bag 27 having (a (rigid mouth plate 33, one side of the plate 33 being retained in a wedge shaped groove 36 by a hooklike spring 37 engaging in a hole 38 at the other side of the plate 33. The dust bag 27 contains a non-return valve in form of a flattened paper tube 44 fastened to the plate 33, in order to prevent dust from falling from the bag on switching off the apparatus or on removal of the bag.
Patent GB-800161-A (GB)
Title: Methods for preparing emulsions
IPC: C08J3/03
Filed: 1956-05-17
Abstract: An aqueous emulsion comprises a hydrocarbon polymer and the addition product of an unsaturated hydrocarbon polymer with either maleic anhydride, chloromaleic anhydride or citraconic anhydride, neutralized with an alkali metal hydroxide or an alkali metal carbonate, ammonium hydroxide, tetra-substituted ammonium hydroxide, or ammonium carbonate, or an organic base.  The unsaturated hydrocarbon polymer may be a Friedel-Crafts polymer of 97 per cent isobutylene with 3 per cent isoprene, or 10-90 per cent isobutylene and 90-10 per cent styrene, or a polymer of a steam-cracked petroleum fraction, or polymers of butadiene, or copolymers of butadiene with styrene or acrylonitrile.  The basic compounds may be a hydroxide or carbonate of sodium, potassium, lithium, rubidium, calcium or ammonium or an amine or a tetra-substituted ammonium hydroxide. Preferably, from 0.1 to 5.0 per cent of the anhydride is used based on the weight of the polymer.
Patent GB-687457-A (GB)
Title: A method of making cupped shells
IPC: B21D22/20
Filed: 1951-06-28
Abstract: 687,457. Making cupped articles. MAY, O. H. June 28, 1951 [June 28, 1950], No. 15406/51. Classes 83 (ii) and 83 (iv). Forging; stamping.-A method of making a cupped shell with a minimum of waste comprises cutting out a polygonal blank preferably of three, four or six sides, shaping it to form another polygonal blank having twice the number of sides and then drawing it into a cupped shell. In the form shown, a square blank 1 is cut from a strip and held on a bottom plate by a punch 6 while it is pressed at each corner, as in Fig. 2, by jaws 3 to form an octagon. Each of the jaws 3 is actuated by a toggle 4 and operating link 5. The octagonal blank is next cupped by being forced into a drawing die 8 by a mandrel 9. The bottom of the shell is then supported by a pad 10 while still within the die and the upper edge is flattened by an annular punch 12 which descends between the die and mandrel.
Patent GB-384198-A (GB)
Title: Improvements in and relating to spectacles
IPC: G02C5/22
Filed: 1932-05-31
Abstract: 384,198. Spectacles. BITTNER, M. B. F. E., 18, Cross Street, Hatton Garden, London.- Warning, H.; 40, Fehrbelliner Strasse, Rathenow, Germany.) May 31, 1932, No. 15438. [Class 97 (i).] In a metal hinge for a non-metallic spectacle frame, at least one of the two members connected together at the pivotal axis of the hinge comprises two arms extending in planes at right-angles to the pivotal axis and passing over the usual lug at the side of the front of the frame, or over the end portion of a side, so as to bring apertures at the ends of the arms into register with a bore passing through the lug or side, a screw being passed through all three apertures to secure the hinge member in position. In Figs. 1 and 2 the hinge members comprise arms 19, 21 secured to the side 11 and arms 20, 22 secured to the lug 15 of the frame 12. The inner ends of the arms 19, 21 are formed as apertured lugs passing between the apertured inner ends of the arms 20, 22, a screw 25 being passed through all the apertures to form the hinge pivot. The hinge members fit into recesses in the upper and lower surfaces of the members 11, 15 and are secured thereto by screws 26, 27. The surfaces 13, 14, which abut when the spectacles are opened, are bevelled and, in the opened position, the axis 25 is equidistant from the frame and side. When the side and frame abut as shown in Fig. 6, the lugs on the side may be bent forwardly as shown so as to leave sufficient material beyond the recess in the side and at the same time reduce the thickness of the spectacles when folded. In Fig. 7 the hinge member comprising the arms 51, 52 is connected to the member comprising the arms 53, 54 by two separate coaxial pivots 55, 56.
Patent GB-236722-A (GB)
Title: A new or improved hand tool or device for use in lifting the springs of internal-combustion engine valves
IPC: B25B27/26
Filed: 1924-06-27
Abstract: 236,722. Terry, A. V. June 27, 1924. Pliers.-A valve-spring lifting-tool, of the type wherein a pair of jaws are opened and closed in parallel movement by toggle or crossed link action, comprises a pair of parallel jaw members, crossed links connected to the jaw members, and a pair of operating handles in the form of extensions of the crossed links. The parallel jaw members a<1>, b<1> are connected together by the cross links d, e, pivoted together at f and having rearward extensions constituting operating handles d<1>, e<1>. The sheet metal of the jaw members is twisted at the front into a plane at right angles to provide two jaws a, b, one slotted at a<2> and the other bevelled at b<2>, and adapted when the handles are wide open to be forced between the valve tappet and the seating k<1> of the valve-spring k. Stop pins b<3> are provided on the jaw b. The forward ends of the crossed links d, e are pivoted to the jaw members at g, g<1>, and their rear ends carry pins h, h<1> engaging slots a<4>, b<4> in the jaw members. A locking- catch i is pivoted at g<1> and is provided with a slot i<2> having a series of notches i<3> adapted to engage automatically with the pin h<1> under the influence of the spring j for holding the valvespring in the compressed condition.
Patent GB-950444-A (GB)
Title: Process for the manufacture of high purity metallic silicon by thermal decomposition of monosilane
IPC: C23C16/22
Filed: 1960-05-03
Abstract: <PICT:0950444/C1/1> Silane is passed continuously into an airtight water-cooled metal reaction vessel containing an electric resistance heated carrier filament and silicon is deposited on the filament from the silane, the by-product hydrogen also produced being maintained in the vessel during the deposition (Fig. 1).  The silane may be introduced together with hydrogen or argon. The silane may be introduced into an evacuated vessel or one containing hydrogen or argon at superatmospheric pressure.  The vessel may contain baffle plates. After a period the process is interrupted while the accumulated by-product hydrogen is discharged.  The period may be extended by absorbing the hydrogen in spongy titanium or zirconium heated to a temperature of 200-300 DEG  C. by heat radiated from the filament, the absorbent being regenerated by heating at 500-700 DEG C. (Fig. 2, not shown). The filament may be of tantalum, tungsten, molybdenum, carbon, or silicon.  In the latter case, the filament may be preheated by the passage of a current through a coating of zinc foil or vapour-deposited zinc which is then evaporated under vacuum. It may alternatively be preheated by radiation from an electric resistance heated carbon filament which is movable to and from the vicinity of the carrier filament (Fig. 3, not shown). After removing a non-silicon filament, the silicon deposit may be subjected to zone-refining or crystal pulling.
Patent GB-220111-A (GB)
Title: Improvements relating to cake ovens and the like
IPC: A21B1/00
Filed: 1923-06-15
Abstract: 220,111. Knothe, J. June, 15, 1923. Air, supplying.-A frame i on a level with the bars of a bake-oven or the like serves as a guide for a series of flue pipes g having openings e at their lower ends, and top covers m and lateral openings d. The pipes g are carried in a frame h on pivoted levers l in the ash-pit. On depressing the levers l, the pipes are raised and air is delivered from the ash-pit; on raising the levers the pipes are lowered so that their tops m are level with the grate and provide an unrestricted surface.