baber/WOPTO huggingface dataset:
Patent GB-554774-A (GB)
Title: A method of manufacture of composite metal slabs
Filed: 1942-04-28
Abstract: 554,774. Casting composite metal slabs. ARNOLD, J. C. (Medsker, C. A.). April 28, 1942, No. 5680. [Class 83 (i)] A composite metal slab is made by contacting a metal slab with burning flux of the alkylborate type, heating to 800 to 1500 F., applying another metal, and then heating the whole to a temperature above the melting point of the applied metal for not less than two minutes. The first metal may be steel and the second copper or an alloy thereof which may be poured at 1900 to 2500 F. A solution 4 of alkyl-borate type flux in alcohol may be first poured over a steel slab 2 in a mould 1, it is ignited to remove the alcohol and the mould is passed by a chain conveyer through a slightly reducing furnace 5. Copper at 2250 F. is then poured through a spout 7 as wide as the slab 2 and gas containing vaporized flux may be burned at 8, 9 to deposit boric oxide. The mould then passes through a furnace 10 at 2000 F. and when it has cooled to 1600 F. the slab may be removed from the mould and rolled or allowed to cool in air. In modifications the slab 2 is fluxed by passing the mould 1, Fig. 3, containing it in inverted position over a bath 12 of burning flux solution or burners similar to 8, 9. Solid instead of molten copper &c. may be applied to the first metal.
Patent GB-1515833-A (GB)
Title: 1-oxa-3,8-diazaspiro(4,5)decanes process for their preparation and their use as light stabilizers
IPC: C08K5/35
Filed: 1977-02-11
Abstract: 1515833 Piperdine derivatives as stabilizers HOECHST AG 11 Feb 1977 [14 Feb 1976] 5697/77 Heading C3K [Also in Division C2] Organic polymeric materials in particular polyolefins are protected against the degradative action of light by incorporation of compounds of the general formula in which each of R<1> and R<2> is a straight chain or branched alkyl radical having from 1 to 12 carbon atoms or R<1> and R<2> together with the carbon atom to which they are attached, form an optionally methyl-substituted cyclopentyl or cyclohexyl ring or R<1> and R<2> together from a group of the formula each of R<3> and R<4> is a hydrogen atom, an alkyl or isolakyl group having from 1 to 30 carbon atoms, an aryl radical having from 6 to 10 carbon atoms which may be substituted by a halogen atom or an alkyl group having from 1 to 4 carbon atoms, or an aralkyl radical having from 7 to 10 carbon atoms, or R<3> and R<4> together with the carbon atom to which they are attached, form a cycloalkyl group having from 4 to 15 carbon atoms, which may be substituted by an alkyl group having 1 to 4 carbon atoms, or R<3> and R<4> together form a group of the formula R<5> is a hydrogen atom, or an oxygen atom, a hydroxyl group or an alkyl group having from 1 to 4 carbon atoms, H-X is phosphoric acid, phosphorous acid, an aliphatic or aromatic sulphonic acid or phosphonic acid, an aliphatic mono-, di- or polycarboxylic acid or an aromatic mono- or dicarboxylic acid and m is 0 or 1 or, when the group N-R<5> is not basic m is 0 and if desired other polymer stabilizers.
Patent GB-1022634-A (GB)
Title: Improvements in propelling means for road and rail vehicles
Inventor: HODKIN DAVID
IPC: B60K1/02
Filed: 1962-02-14
Abstract: 1,022,634. Electric motors and their driving arrangements; electric motor control systems. HUMBER Ltd. Feb. 14, 1963 [Feb. 14, 1962], No. 5708/62. Headings H2A and H2J. An electrically propelled road or rail vehicle has a propelling system which comprises for each of two independently driven wheels 10 or groups of wheels on opposite sides of the vehicle, a multiphase induction motor, means to couple the motor rotor 15 directly or indirectly (e.g. by gearing) to the wheel or wheels, and means for supplying variable frequency A.C. to the motor stators; alternatively, as shown, the two motors may have a common stator 16. The motor armatures 15 are of the squirrel cage type, carried by bearings 20, 21, and the coupling means include shafts 11 and universal joints 12. The supply means may comprise switchgear and semi-conductors supplied from an internal combustion engine driven generator or a battery or a fuel cell.
Patent GB-757435-A (GB)
Title: A device for delivering measured quantities of substance
IPC: G01F11/24
Filed: 1954-02-26
Abstract: 757,435. Dispensing measured quantities. EVANS, B. L. and MORGAN, I. A. Feb. 25, 1955 [Feb. 26, 1954], No. 5775/54. Class 106(5) A device for delivering measured quantities of substances includes at least two hopper-like containers 1, 2 carried by a base comprising two vertically spaced members 5, 6, the upper member having at least two apertures 11, 12 one in alignment with an outlet from each container, whilst the lower member has a single discharge aperture 16 therethrough, and means 10 movably mounted between the members and having at least two passages, such as 13, therethrough, each passage forming a measuring chamber which can be brought by movement of the means 10 into register successively with one of the apertures in the upper member and the discharge aperture in the lower member. The passages in the means 10 are so arranged that one is in the charging position while the other is in the discharging position and the means 10 is pivotally mounted between the members 5, 6 and provided with a handle 15 for manual operation. The device may be used for dispensing dental amalgam in which case the container 1 contains an alloy mixture while the container 2 contains mercury. The capacity of the chamber 14 may be adjusted by means of a screw 18 which projects radially into the chamber.
Patent GB-1210091-A (GB)
Title: COPOLYMERIZATION OF ETHYLENE AND alpha-OLEFINS
Inventor: DUCK EDWARD WILLIAM
IPC: C08F210/00
Filed: 1967-02-07
Abstract: 1,210,091. Copolymerizing hydrocarbon monomers. INTERNATIONAL SYNTHETIC RUBBER CO. Ltd. 6 Feb., 1968 [7 Feb., 1967], No. 5826/67. Heading C3P. Copolymers of ethylene and a second alphaolefin having at least five and not more than 20 carbon atoms and optionally not more than 10% of a third nomomer which is a non- conjugated diolefin or polyunsaturated hydrocarbon, are made by copolymerizing a mixture of the monomers using the second olefin as the whole or major part of the solvent medium. The process is preferably effected in a catalyst comprising (a) a hydrocarbon-soluble compound of vanadium, titanium, or zirconium; (b) a halogen compound of aluminium; and (c) an organometallic compound of lithium, the lithium component (c) only being brought into contact with (b) when (a) or at least one of the monomers is present. The alpha-olefin may be pentene-1, hexene-1, heptene-1, octene-1, dodecene-1, or 3 methyl heptadiene-1,4. The third monomer may be dicyclopentadiene, cyclooctadiene, hexadiene-1,4, 3 methyl heptadiene-1,4, or trivinylcyclohexane. Hydrogen may be present during the copolymerization. The copolymers may be sulphur vulcanized.
Patent GB-788583-A (GB)
Title: Improvements in or relating to bi-stable electric apparatus
IPC: H03K19/164
Filed: 1956-02-24
Abstract: 788,583. Bi-stable circuits. GENERAL ELECTRIC CO., Ltd., ARBON, R. S., and JONES, G. PHYLIP-. Feb. 24, 1956, No. 5828/56. Class 40 (4). A bi-stable circuit is used as an AND, OR, or BUT NOT gate and comprises a saturable inductance in circuit with a capacity and excited by an A.C. source and has a control winding which in response to an interrogating pulse sets the circuit in one stable state or the other in dependence upon the combination of two two-valued input signals. The inductance 21 which is constructed as described in Specification 778,191, [Group XXXV], has a main winding 22 with a capacity 29 of such value that the circuit is approximately in resonance, at the frequency of oscillations applied to a lead 31 and capacity 47, when the core of inductance 21 is saturated. Bias windings 23, .24, in which induced voltages cancel, carry a relatively large standing current such that the circuit has two stable states of oscillation, one of a high and the other of a low voltage. If the circuit is in a high voltage state and the bias is augmented by current in control windings 25, 26, only one stable state of low voltage exists so that when the bias is returned to normal a low voltage state is enforced. If now the bias is depleted by a control current in windings 27, 28, only one stable state of high voltage exists so that the circuit is transferred from the low to the high voltage state. The pairs of windings 25, 26 and 27, 28 are wound so as to cancel out induced voltages and interrogating pulses are applied to their common terminal. If either or both leads 36, 37 carry A.C. signals the rectified voltage across resistance 41 and capacity 42 blocks rectifier 43 and windings 25, 26, so that if an interrogating pulse achieves anything it will transfer the circuit from a low to a high voltage state. In its high voltage state the circuit produces a rectified voltage across resistance 34 and capacity 33 which blocks a rectifier 44 and the windings 27, 28, so that an interrogating pulse will produce no effect until neither lead 36 nor 37 carries an A.C. signal when the pulse can energize windings 25, 26 to transfer the circuit to the low voltage stage. The above arrangement of Fig. 5 constitutes an OR gate. In Fig. 6 the modified input will block the control windings 25, 26, only if both leads 51, 52 carry A.C. signals and so constitutes an AND gate. In Fig. 7, a BUT NOT gate is formed by having leads 60, 61, terminate in a transformer 62 so that a signal on both or neither lead gives no rectified voltage across resistance 64, but a signal on one lead but not the other will block the control winding. The bi-stable circuits may be arranged in cascade with an output on a lead 45, Fig. 5, providing a two-valued input for a following circuit. The frequency of recurrence of interrogating pulses is 17 kc/s. compared with a frequency of 170 kc/s. applied to lead 31. Reference has been directed by the Comptroller to Specifications 740,284 and 749,383.
Patent GB-736685-A (GB)
Title: Improvements relating to surgical dressings
Inventor: PRESTON JOHN MASSEY
IPC: A61K49/04
Filed: 1952-03-07
Abstract: A thread formed from fibres of a linear high polymeric substance, which contains in its molecule an atom or atoms of atomic number not less than 40, is incorporated as a tell-tale material in a surgical dressing, such as a gauze swab or pad.  A surgeon may thus readily determine by X-ray examination whether or not a dressing has been removed after an operation.  The fibre-forming substance is preferably a highly-insoluble alginate of barium or other heavy element and its stability to aqueous liquids may be increased by incorporating a synthetic resin in the fibres.  The insolubility of the fibre-forming substance in water and other liquids may be increased by subjecting it to the action of cross-linking agents. Barium alginate yarn may be obtained by immersing calcium alginate yarn in barium chloride solution until the resultant double decomposition reaches equilibrium, and then transferring the yarn to successive baths of the same solution until substantially all the calcium has been replaced by barium.  Barium alginate yarn may also be obtained by extruding a solution of sodium alginate into barium chloride solution.  The yarn may be rendered visually detectable by dyeing it or by colouring it with a chromium or other metallic salt. The stability of the alginate yarn to aqueous treatments may be increased by treating it with a partly condensed formaldehyde resin, e.g. a urea - formaldehyde resin, which is then hardened. The yarn may be soaked in a detergent solution to remove brittleness, and may then be rinsed and dried.  Yarns of heavy metal cellulose glycolates may be used instead of alginate yarns.ALSO:A surgical dressing such as a gauze swab or pad has incorporated therein, as tell-tale material opaque to X-rays, a thread formed from fibres of a linear high-polymeric substance containing in its molecule an atom or atoms of atomic number not less than 40.  A surgeon may thus readily determine whether or not a dressing has been removed after an operation.  The fibre-forming substance may be a highly-insoluble alginate of barium or other heavy element and its stability to aqueous liquids may be increased by incorporating a synthetic resin, e.g. a urea-formaldehyde resin, in the fibres.  The yarn may be impregnated with a partially condensed synthetic resin which is then hardened, e.g. by baking.  Brittleness produced by the resin treatment may be removed by soaking in a detergent solution. Yarns of heavy metal cellulose glycolates may be used instead of alginate yarns.
Patent GB-564912-A (GB)
Title: Improvements in or relating to multi-circuit electrical connectors or switches
IPC: H01H19/62
Filed: 1943-04-14
Abstract: 564,912. Snap -- action switches. BESSON, R. April 14, 1943, No. 5982. [Class 38 (v)] A series of insulating base-plates 1, with insulating bosses thereon for supporting the arms 6 of contacts 7, are assembled so that the base-plate of one unit encloses the adjacent unit and a shaft 4 traverses all the sections, a cam 19 being operated by the shaft in each section to effect the radial movement of a member 16 carrying two bridge contact arms 14 against the radial pressure of springs 17. One element has no switch contacts, but has spring-pressed members like 16 which coact with a cam with a desired number of faces to give definite stopping points to the shaft.
Patent GB-177361-A (GB)
Title: Improvements in electric switches particularly adapted for firing explosives
IPC: F42D1/05
Filed: 1921-02-22
Abstract: 177,361. MacDonald, J. A. Feb. 22, 1921. Press-button switches for electrically firing explosive charges consist of conducting pins 11 to which the firing leads 7 are secured by collars 16, provided with insulating press-button heads 13 and supported centrally over orifices in the hinged cover 2 of a battery box by helical springs 12 secured to the cover. The orifices may be covered by sliding pieces 9 to prevent inadvertent actuation, and when the slides are removed the buttons can be depressed to move a contact plate 17, which is spring supported on the batteries,. away from. engagement with an insulating washer 19 on the underside of the cover into engagement with one of the poles 5, 6 of the batteries, thereby completing the firing circuit. The switches may be used for electric lighting.
Patent GB-677657-A (GB)
Title: Improvements in or relating to bottom running end folding doors
Inventor: WARWICK KENNETH BERNARD
IPC: E06B3/48
Filed: 1950-03-10
Abstract: 677,657. Doors. KING, Ltd., G. W. March 8, 1951 [March 10, 1950], No. 6090/50. Class 20(iii). In a sliding folding door having bottom runners 11, the hinged leaves are entirely detachable from the door posts, a retaining device being provided at one side of the door opening so that when the door is in its folded state clear of the opening, the end leaf is engaged by the retaining device and held positively in a vertical position. The leaves 10 are supported on a bottom roller track 12 and are steadied by upper rollers 13, 18, which run in a channel track 14. To open the doorway, the leaves are pushed to the right in Fig. 1, the leaves folding during the movement except for the two leaves nearest to the door post which are retained in the flat position by an additional roller 15 which runs in the track 14 at a lower level than the rollers 13, 18. When the end of the travel is reached, the roller 15 is opposite a gap 16 in the track 14 through which it may pass to allow the last two leaves to fold. The bearing pin of the guide roller 18 of the end leaf is fast with a flatted circular member 17 which passes between the tapered guide parts 21 of a block 19 at the end of the channel guide 14, and becomes co-axial with a circular cut-out part of the block. When the two end leaves are folded, the member 17 turns hingewise in the cut-out and the top of the end leaf is thus held positively. A guide 22 ensures that, on closing the doorway, the roller 15 passes again into the guide 14.
Patent GB-578453-A (GB)
Title: Improvements in or relating to electric plug and socket couplings
IPC: H01R13/585
Filed: 1944-04-01
Abstract: 578,453. Two-part couplings. STANTON, H. B. April 1, 1944, No. 6115. [Class 38 (i)] A plug coupling has an insulating body comprising terminal recesses 16 communicating with a circular recess containing a boss or peg 19 around which a side-entering cable is adapted to be wound in one or more turns before its leads reach the terminals. The boss may be the upper end 25 of an earth pin 26 or may be integral with the insulating body or its cover or formed by co-operating parts of body and cover. The boss or the wall of the recess may comprise a step 28, 30 or the free end of the boss may be of smaller diameter than its base. Examples are shown in the figures. Fig. 3 shows an earth pin 20 moulded into the plug body, the connection screw 22 being accessible through an opening 23 in the front of the boss.
Patent GB-1341120-A (GB)
Title: Method for producing an assembly of a pair of concentric hollow cylinders with spacer elements
IPC: H01J23/027
Filed: 1971-11-11
Abstract: 1341120 Making electrode assemblies; stamping LITTON INDUSTRIES Inc 11 Nov 1971 [2 Dec 1970] 6123/73 Divided out of 1341119 Headings B3A and B3Q A pair of hollow metal cylinders 21 and 23 are permanently secured in concentric relationship, with spacer elements arranged therebetween and without the necessity for brazing, by coaxially positioning the two cylinders, introducing into the annular space between them spacer elements of a material the hardness of which exceeds the hardness of the material of at least one of the cylinders, and decreasing the width of the annular space until the spacer elements have produced, and have become partly seated within, indentations in the cylinder walls of softer material. As described, the cylinders are of copper softened by annealing, and the spacer elements are formed by spheres 47 of aluminium oxide or beryllium oxide introduced into the annular space and initially retained therein by 0-rings 51, 53 and copper washers 54, 55 sealed with an acrylic binder. The unit so formed is placed in the die shown, and a polyurethane slug 64 is inserted within the inner cylinder and compressed by plungers 59, 60 to expand the cylinder 23 and form indentations therein. After removal from the die, and extraction of the slug 64, the structure may be passed through a size-reducing die to compress and indent the outer cylinder 21. Preferably, the depth of the indentations is half the radius of a spacer sphere. The completed structure may be employed in the collector electrode assembly of a discharge tube, which assembly is claimed in the Specification 1,341,119 (see Division H1).
Patent GB-576374-A (GB)
Title: Machines for mixing powders and liquids
IPC: B01F7/18
Filed: 1944-04-03
Abstract: 576,374. Mixing-machines. CRUICKSHANK, Ltd., R., and BURSTON, J. R. April 3, 1944, No. 6177. [Class 86] An apparatus for mixing powdered material with liquid comprises the combination of a hopper a for the powdered substance, a hollow spindle e carrying radial stirring arms f within the hopper a and a mixing chamber b, in communication with the lower end of the hopper a and containing a rotary mixing device for mixing the powder with liquid passed therein through a tube c. The rotary mixing device comprises a spindle i, which extends through the hollow spindle e and carries a disc j, upon which the powder and liquid impinge, and a number of blades k adapted to scrape the inner wall of the container b. Means are provided for rotating the two spindles e, i, at the same or different speeds. The powdered material is transferred from the hopper a to the mixing chamber b through a cylindrical outlet h by means of a worm g formed on or secured to the hollow spindle e.
Patent GB-559298-A (GB)
Title: Improvements relating to the production of magnesium hydroxide
IPC: C01F5/22
Filed: 1942-05-09
Abstract: 559,298. Magnesium hydroxide. OCEAN SALTS (PRODUCTS), Ltd., and HANSTOCK, R. F. May 9, 1942, No. 6288. [Class 1 (iii)] Magnesium hydroxide is obtained from brine and other liquors containing a low percentage of magnesium salts by the addition thereto of a base, e.g. a lime suspension, at such a rate that growth of existing particles occurs preferentially to the formation of new particles. The addition may be intermittent or continuous and the magnesium salt solution may be seeded with the precipitate formed in a previous process.
Patent GB-369729-A (GB)
Title: An automatic arrester for gramophone turntables
IPC: G11B17/02
Filed: 1931-02-26
Abstract: 369,729. Gramophones. BAMFORD, A. J., 82, Hanham Road, Kingswood, Bristol. Feb. 26, 1931, No. 6301. [Class 40 (ii).] A starting and stopping mechanism operable by the movement of the tone-arm comprises a brake block 5 adjustably mounted on a slide 4 movable in a casing 3 under the action of a spring 12 to apply the brake to the downwardly projecting rim 6 of the turntable, the slide being pushed back to release the brake by the movement of the tonearm 11 to the starting position A, Fig. 3, by a pivoted cam 7 with arms 8, 9 which is actuated by a pin 10a on an arm 10 adjustably fixed to the tone-arm. In moving the tone-arm to position A, the pin 10a rocks the pawl which is then moved by the slide so that the arm 9 comes against the end of the casing and the brake is off. The tone-arm is now placed on the record, and towards the end of playing, in position B, the pin 10a engages the arm 8 and rocks the pawl until at position C of the tonearm corresponding to the end of the record the slide, under the action of the spring 12, can rock the pawl and apply the brake.
Patent GB-573181-A (GB)
Title: An improved height-measuring optical instrument
IPC: G01C5/00
Filed: 1943-04-20
Abstract: 573,181. Measuring angles. DAVEY, P. (trading as FOREST PRESS), and DAVEY, R. C. W. April 20, 1943, No. 6342. [Class 97 (ii)] A device for measuring heights comprises a casing provided with a pin-hole eyepiece A, a mirror B set to reflect light at 45 degrees, a vertical mirror D, a level E and an aperture C having a cross-wire. In use for measuring the height of a tree the light from the top of the tree passes to the eyepiece via the level E, to ascertain whether the device is being held in a level position, and the mirrors D, B which the light from a mark on the tree at eye-level is also viewed in the eyepiece, the device being moved towards or away from the tree until the mark and the top of the tree are juxtaposed in the eyepiece. The differential height of the mark and the top of the tree is then equal to the distance of the device from the tree and may be measured in the usual manner.
Patent GB-198097-A (GB)
Title: Improvements in or relating to pillion seats for motor cycles, and the like
IPC: B62J1/14
Filed: 1922-03-04
Abstract: 198,097. Driessen, H. A. March 4, 1922. Seat attachments.-In a pillion seat for motorcycles &c., the seat bottom 1 is pivoted at its front end on a horizontal axle. 4, and is supported at its rear end by one or more limits 8 and levers, for example, bell-crank levers 9, connected to one or more springs 14, the other ends of which are pivotally secured to a point on the supporting- frame 5, 11, 12, such as a horizontal shaft 18 below and close to the axle 4. The tension of the springs 14 may be adjusted by means of a screw bolt 19 and nuts 20. The rods 5 may be supported at 6 on the rear axle &c. of the cycle, and may be secured by means of a plate. 7 to the cycle frame or mud-guard. When unoccupied, the seat 1 is prevented from jerking too far upwards by one or more chains 17.