baber/WOPTO huggingface dataset:
Patent GB-244051-A (GB)
Title: Improvements relating to electro-dynamic loud speakers
IPC: H04R9/04
Filed: 1925-08-27
Abstract: 244,051. Bothe, O. Dec. 4, 1924, [Convention date]. Mouthpieces and earpieces ; diaphragms.-An electromagnetic loud-speaker comprises behind its diaphragm 25, a body 32 of wood &c., the radial cross-section of which is triangular, by means of which body the space behind the diaphragm 25 is divided into two parts 33, 34, the periods of oscillation of which are favourable for eliminating resonance. These spaces communicate only through an aperture in the centre of the body, where the middle of the diaphragm is connected to an aperiodically oscillating flat spring 22. The casing 3 is closed by an apertured cover 5, and contains an electromagnet 8, 9 and a cylindrical iron core 10, both secured by a screw 16. Thin annular surfaces 7 secure the two parts 8, 9 together. In the annulus between the core 10 and the magnet 8 is fitted a coil 19 of fine wire, forming a " sleeve " or cap with an opening through which, and also through the central opening in the cruciform spring 22, passes an ivory &c. fastener 36. A ring 37 completes the fastener, the parts being glued or cemented together under pressure. The cup-like part of the fastener 36 is filled with quicksetting glue or cement, and receives the projecting central part 26 of the conical diaphragm 25, which is further secured at its edges by a ring 30. The diaphragm is of light material, such as celluloid or bakelitized paper, and is deeper than the body 32. The space 40 can be filled by a filling mass or body. Wires 17, 21 excite the coils 14, 19 respectively. The arms of the spring 22 are wider at their outer parts than at their inner. Specification 240,425 is referred to.
Patent GB-849009-A (GB)
Title: Improvements in or relating to electronic timing devices
IPC: H03K17/288
Filed: 1957-07-08
Abstract: 849,009. Valve 'relay circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 8, 1957 [July 11, 1956], No. 21543/57. Class 40(6). In a timing circuit, a normally conducting valve energizes a relay 10 having contacts 7 (drawn in the energized position) which maintain the grid at cathode potential until the relay is released by reducing the anode current, when capacitor C5, charged from the supply voltage through resistor R4, is connected across the gridcathode circuit to hold the valve cut-off for a time determined by the rate of reversed charge of C5 through resistor R12. The time period (0À69 R12 C5) is adjustable by variation of R12 and is initiated by momentary closing of switch 16 causing short circuit of the screen voltage. The resistor 15 should be equal to the combined D.C. resistance of the valve and the relay 10. Fig. 2 shows another method of initiating the period. Capacitor 17 is discharged by operation of switch 16 which, on being restored to the position shown, causes release of the relay 10 by momentary reduction of screen voltage. Switch 16 may be replaced by a rotary switching device.
Patent GB-981793-A (GB)
Title: Improvements in or relating to means for ascertaining fluid pressure
Inventor: CRITCHLEY OCTAVIUS HUNT
IPC: G01L9/00
Filed: 1960-06-20
Abstract: 981, 793. Measuring pressure electrically. COAL INDUSTRY (PATENTS) Ltd. June 20, 1961 [June 20, 1960], No. 21549/60. Heading G1N. Apparatus for measuring the pressure inside a hydraulic roof support, e.g. a pit prop, comprises a pressure-sensitive resistor connected in abridge circuit with a similar element not subjected to the pressure, to provide automatic temperature compensation. The resistor may be made of a semiconductor or a carbon-loaded material, and may be encased in rubber.
Patent GB-242738-A (GB)
Title: Improvements in or relating to building construction
IPC: E04B2/56
Filed: 1924-09-12
Abstract: 242,738. Whiting, T. Sept. 12, 1924. Walls. - Concrete is cast against a timber framework b, to which are attached reinforcing wires G adapted to be tensioned by strainers c. One end of each wire is secured by a nail d and the other end is threaded through a hole in a tubular strainer c, and the wire is tensioned by turning the strainer. The wires G are spaced from the framework by metal bridges f. The units of the framework are bolted together and to the foundation by bolts e. The Provisional Specification describes also window and door frames, reinforced by angle-bars, to which the reinforcing wires may be attached.
Patent GB-380896-A (GB)
Title: Improvements in appliances for playing bowling games
IPC: A63D3/00
Filed: 1931-07-29
Abstract: 380,896. Bowling-games. BRADSHAW, G., 59, Park Street, Camden Town, London. July 29, 1931, No. 21617. [Class 132 (ii).] Apparatus for playing a bowling-game comprises a number of reciprocating pivoted figures which cannot be knocked backwards by balls aimed by players until they have reached predetermined positions in their reciprocating movements. The figures 1c are pivoted on shafts 6 supported in blocks 7 secured to rods 8 which can reciprocate in guides 13. Each shaft 6 also carries a roller 5 acted on by a cam 2 on a rotating shaft 3. The rods 8 are inclined forwards slightly, the figure 1c being prevented from falling forwards by set-screws 12 attached to extensions 11 of the figure and bearing against the blocks 7 below the axis of the shaft 6. An arm 20 secured to a shaft 19 extends horizontally and prevents the knocking backwards of the figure until the latter has risen to the top of its stroke. The arm 20 retains the knocked-down figure and resets it when the arm is turned in a clockwise direction. The order in which the cams actuate the figures may be varied and the figures may have feet attached to them, the feet showing above the bowling track when the figure is knocked over.
Patent GB-137096-A (GB)
Title: Improvements in and relating to perambulators
IPC: B62B9/18
Filed: 1918-12-24
Abstract: 137,096. Cattle, A. J., Fletcher, A. A., and Macrael, R. S. Dec. 24, 1918. Drawings to Specification. Locking by frictional detents.-The end of the handle bar of a perambulator is rotatable, and is adapted to apply a band-brake through a Bowden connexion.
Patent GB-845693-A (GB)
Title: Process for the manufacture of aluminium trialkyl etherates
IPC: C08F10/00
Filed: 1958-07-07
Abstract: Mixtures of aluminium and magnesium or mixtures of aluminium magnesium alloys and aluminium or magnesium are reacted with alkyl halides in the presence of a di-alkyl or an alkyl aryl ether. Preferably the total amounts of aluminium and magnesium in the mixture of metals or in the metal-alloy mixture are in the stoichiometric proportions 2Al: 3Mg.  The metals may be in the form of granules or shavings.  When using alkyl halides an alkyl magnesium halide is also produced.  The examples describe the preparation of aluminium tributyl diethyl etherate (and butyl magnesium bromide), aluminium triethyl isobutyl etherate (and ethyl magnesium bromide), aluminium triethyl anisole etherate and aluminium triethyl phenetole etherate.
Patent GB-1138172-A (GB)
Title: Seats of adjustable height
Inventor: WOODRUFF ALAN SHAW
IPC: A47C3/28
Filed: 1966-05-17
Abstract: 1,138,172. Adjustable seats. EVERTAUT Ltd. 16 Aug., 1967 [17 May, 1966], No. 21857/66. Heading A4J. A telescopic seat supporting strut is adjustable in length, by lowering plunger 15, to draw the elements 23 of split collet assembly downwardly, off taper plug 14 and thus, inwardly, to disengage the ridges 26 from the grooves 28, so that tube 11 is free to move longitudinally. The elements 23 are keyed for radial movement in a diametral groove (21, Fig. 3, not shown) in carrier 20. Spring 29 is effective to lift the tube 11, when the seat is unoccupied. When the seat is occupied, tube 11 transmits a downward force, which wedges the elements 23 laterally and, on actuation of the plunger 15, the stem 38 slides through the carrier 20 without moving it. This action compresses spring 37 whose rating is chosen, so that it is only slightly compressed to move the carrier 20, when the seat is unoccupied. Compression spring 18 returns plunger 15 in the upward direction.
Patent GB-299936-A (GB)
Title: Improvements in and apparatus for the separation of solid substances of different specific gravity
IPC: B03B4/04
Filed: 1927-08-20
Abstract: 299,936. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Aug. 20, 1927. Pneumatic separating. -The dry separation of a mixture, of solid substances, such as gangue and ore, of different specific gravities is carried out by feeding them, after grading to substantially uniform size, to sieve B continuously moving in the same direction at the bottom of a shaft A and subjecting them to an upward current of air, the lighter materials floating to the top and escaping at the spout G and the heavier materials settling on the sieve, B being delivered into the hoppers D. The materials may be fed by the worm F or introduced at the top of the shaft, and the air, which may be warmed, enters at E. The sieve B is preferably in the form of an endless band or may be a. rotating device.
Patent GB-1393193-A (GB)
Title: Reeling system
IPC: B65H54/04
Filed: 1973-05-08
Abstract: 1393193 Guiding cables during reeling AUKRA BRUK AS 8 May 1973 [9 May 1972] 22001/73 Heading B8B A system for guiding a rope 2 on to a winch drum 1, comprises guide pulleys 3, mounted on a carriage 4 reciprocable axially of the drum under the control of the sensed angle α of the rope relative to a line normal to the drum surface. With the carriage stationary, the angle α increases as rope coils on the drum, and control pulleys 9 between which the rope passes, operate a valve 7 through arm 8 and adjustable screws 10, to supply fluid to an hydraulic ram 5 to move the carriage. With reduction in the rope angle α, the valve 7 is switched and the ram 5 is de-energized. The fluid supply to control the direction of movement of the ram 5 is determined by which of the screws 10 is contacted by the arm 8, whereby the carriage automatically reciprocates as rope is reeled. In another embodiment, the ram is replaced by an electric motor controlled by an electric regulator replacing the hydraulic valve.
Patent GB-1088901-A (GB)
Title: Improvements in or relating to vacuum tubes
Inventor: HILLIER MERVYN
IPC: H01J7/18
Filed: 1964-05-28
Abstract: 1,088,901. Gettering discharge apparatus. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 28, 1965 [May 28, 1964], No. 22200/64. Heading H1D. A method of gettering a vacuum tube, particularly applicable to tubes having an opaque envelope, includes depositing a rare earth metal (which may be yttrium or scandium) on the internal surface of e portion of the tube envelope, and applying external heating to this portion of the envelope to vaporize the metal and cause it to deposit as an ab sorbent film on an adjacent surface. A nickel - plated molyb denum plate 2, upon which a rare earth metal film-preferably of thulium or samariumhas been evaporated, is brazed to a molybdenum tube 3 sealed to a portion 4 of the vacuum tube. The film is vaporized by the application, to the outer surface of the plate, of arc pulses from an argon arc welder, applied successively over the whole area opposite the film, which deposits upon a molybdenum disc 8 supported in the tube facing and adjacent the molybdenum plate. The temperature of the heated portion of the envelope may be estimated by optical pyrometry, or by observation of the molybdenum/nickel eutectic.
Patent GB-666533-A (GB)
Title: Improvements in or relating to reciprocating cultivators
Inventor: HORSTMANN BEVAN GRAHAM
IPC: A01B19/06
Filed: 1949-08-26
Abstract: 666,533. Agricultural implement. HORSTMAN, Ltd. Nov. 24, 1950 [Aug. 26, 1949], No. 22248/49. Class 6(i) In a cultivator having tines 1, 2, actuated by a reciprocating mechanism arranged to move the tines from side to side, the tines being mounted on a transverse bar 4 or 5 attached to a main support 3 by means of a plurality of parallel levers 6. 7 pivoted to the support 3 and to the bars 4 or 5, the bearings for the pivots on the levers 6, 7 by means of which they are pivotally attached to the bars 4 or 5 being resiliently mounted. As shown a rubber bush 19 is interposed between a housing 21 and a bearing member 20 surrounding a pivot pin 11 partially encased in a spacing sleeve 10. The machine is provided with adjustable land-wheels 22 and members 12, 13 for attachment to a tractor, the reciprocating device being driven from the tractor power shaft. Specifications 628,789 and 646,318 are referred to.
Patent GB-877586-A (GB)
Title: Production and stabilisation of dichlorbutene
Inventor: BELLRINGER FREDERICK JAMES
IPC: C07C17/42
Filed: 1958-07-11
Abstract: The invention comprises 3,4 - dichlorobutene-1 stabilized by one or more organic compounds having a divalent sulphur atom attached by one of its valencies to a carbon atom, and by the second valency to a second carbon atom or to hydrogen.  Suitable compounds are mercaptans, such as methyl, ethyl, propyl, isopropyl, butyl, amyl, hexyl, dodecyl and benzyl mercaptans, substituted mercaptans such as thioglycollic acid and mercaptobenzthiazole, dialkyl sulphides such as diethyl sulphide, and phenothiazine.  A suitable concentration of inhibitor is 0.01-1% by weight.  The invention also comprises a process for the production of 3,4-dichlorobutene-1 by the isomerisation of 1,4-dichlorobutene-2 and distillation of the resulting mixture in the presence of a sulphur compound as defined above to recover the 3,4-dichlorobutene-1 as it is formed.  The invention further comprises a process for the purification of 3,4-dichlorobutene-1 containing lower boiling impurities, in which the mixture is fractionally distilled in the presence of a sulphur compound as defined above which has boiling point the same as or higher than that of 3,4-dichlorobutene-1, and the lower boiling impurities are taken off as an overhead fraction.  According to the Provisional Specification, the inhibitors are of formula RSR1, where R is alkyl, aryl or aralkyl, and R1 is hydrogen or alkyl, aryl or aralkyl, or R and R1 together form part of a homocyclic or heterocyclic ring, and functional derivatives of such compounds.  No additional inhibitors are specified.
Patent GB-1139098-A (GB)
Title: Improvements in or relating to photographic developers
Inventor: DERSCH FRITZ
IPC: G03C5/305
Filed: 1966-05-19
Abstract: 1,139,098. Development accelerators. GENERAL ANILINE & FILM CORP. May 19, 1966 [May 28, 1965], No.22262/66. Heading G2C. Exposed silver halide emulsions are developed by treatment with an aqueous developer solution containing a silver halide developing agent in the presence of a water-soluble polyoxyalkylenated 1,4-butyne diol of formula: - wherein R is ethylene or propylene and R 1  R 2 , R 3  and R 4  are H or alkyl and 1 to 4C and m+n has a minimum value of 7, as accelerator. The accelerator may be in the developer solution and the process is particularly useful in reversal colour photography.
Patent GB-1044535-A (GB)
Title: Apparatus for sorting and combining articles
IPC: B65H39/02
Filed: 1963-06-05
Abstract: 1,044,535. Conveying documents. M. BOHLER, and F. WEBER, [trading as MESSRS. BOHLER & WEBER KOMM. GES.], and TELEFUNKEN PATENT VERWERTUNGS G.m.b.H. June 5, 1963 [June 5, 1962], No. 22272/63. Heading B8A. Cheque counterfoils 7<SP>1</SP> are delivered by a conveyer 9 and through an apparatus 6 to a point 20 at which they are united with the correct account statements 5 on a conveyer belt 4. The counterfoils 7<SP>1</SP> matching a particular account as they arrive at the apparatus 6, are placed in a container 10 respective to the account. The containers 10 are moved on in accordance with the action of a photo-electric cell 13 and a shift-register 11. A shift-register 17 and photo-electric cell 18 control the progress of the account statements 5 on the conveyer 4. The number in a circle adjacent each statement 5, indicates the number of counterfoils in (or destined for) the respective statement. The containers 10 in the apparatus 6 are fed by gravity and a friction wheel drive under the control of locking devices coupled to the register 11 (Fig. 2, not shown). The containers 10 may be closed by a flap. If the latter is not open, or if the container is not in position when a counterfoil is fed from the conveyer 9, a flap (Fig. 4, not shown), may be operated so as to deflect the counterfoils to an emergency container. In a modification (Fig. 5, not shown), the containers 10 move in a closed circuit and are lifted up into alignment with the conveyer 4 by a rotary spider-shaped member.
Patent GB-798398-A (GB)
Title: Fibre-reinforced synthetic resin laminates
Inventor: NEWSON JOHN CHASE
IPC: B32B27/00
Filed: 1955-08-03
Abstract: Structures are formed at least in part, with a surface layer of fibre material bonded with an epoxy resin, integrally backed with a layer of fibre material bonded with a copolymer of an unsaturated polyester resin and a comonomer such as styrene or methyl methacrylate.  The fibre material may be woven, felted, matted or in the form of loose fibres; different fibres may be employed with the respective resins. Suitable fibres include glass, polyamide, cellulose (including paper) and polyesters.  A powdered filler (e.g., chalk, asbestos powder, silica) may be incorporated in one or both resins to reduce the differential shrinkage on curing.  Pipes, ducts, or vessels for holding or conveying a fluid may be formed in this way, the inner surface being formed of the epoxy-resin-bonded fibre material. Structures to be immersed in a moist or corrosive atmosphere or liquid may have a core of fibre material bonded with modified polyester resin sandwiched between layers of epoxy-resin-bonded material.  If the two resins are compatible with one another, the laying-up of the successive layers is carried out without interruption.  If on the other hand they are incompatible, the epoxy resin must be allowed time to gel and the modified polyester-resin then applied whilst the epoxy-resin is still tacky, in order to avoid flash setting of the second resin.  The epoxy-resin hardener may be diethylene triamine or like polyamine, or a polyamide resin, or an epoxy resin adduct with excess polyamine, and the modified polyester may be catalysed with a peroxy catalyst and a metal naphthenate accelerator.
Patent GB-698016-A (GB)
Title: Process of and apparatus for producing sulphuric acid
IPC: C01B17/86
Filed: 1951-09-24
Abstract: <PICT:0698016/III/1> <PICT:0698016/III/2> In the production of sulphuric acid by bringing sulphuric acid containing nitrous acid or nitrosyl sulphuric acid into contact with sulphur dioxide containing gases, the sulphuric acid has a concentration of above 60 DEG  B<\>ae and a nitrogen content of at least 4 per cent (calculated as N2O3) and is sprayed into the empty upper portion of a steel sheeting reaction tower, by means of an atomizer made up from two or more superposed rotating coaxial discs on to which the acid is fed.  The uppermost disc at least is associated with a surrounding stationary surface to assist atomization whilst at least the lower disc has no associated stationary surface thereby spraying part of the acid, e.g. 10 to 20 per cent against the internal wall of the tower as a corrosion resistant film.  The lower portion of the tower is filled with regularly arranged packing elements such as Raschig rings.  As shown in Fig. 1, a plant for the production of sulphuric acid consists of two Glover towers 1, 3, production tower 4, 5, 6, and two Gay Lursac towers 8 and 9.  The sulphur dioxide gases pass successively through these towers by pipes g1, g2, g3, g4, g5, g6 the gases entering tower 1 at 90 to 100 DEG C and being cooled in a cooler 2 between towers 1 and 3.  The acid circulation follows the usual pattern.  The reaction towers 4, partly packed, are provided with atomizers as shown in Fig. 2 where acid is fed on to an upper disc 32 rotating with shaft 31 and surrounded by a stationary member 35.  The acid falling from this disc and member falls on to a lower rotating disc 33 provided with vanes 34 from which the acid is flung outwards to the walls of the tower.  That portion of the tower where the acid strikes the wall is protected by a special steel to prevent corrosion.  The remainder of the installation is made from ordinary steel except for parts of the atomizer and the tank 21 (Fig. 1) receiving the acid from the production towers, where special steel is employed.
Patent GB-1003228-A (GB)
Title: Improvements in or relating to electric storage cells
IPC: H01M50/423
Filed: 1962-06-08
Abstract: In a felted battery separator which is less than 0.4 mm. thick at least some of the fibres forming the felt are longer than 25 cm. so that loops are formed in the surfaces of the separator. The separator may be made from continuous fibres, a mixture of cut fibres (less than 3 cm. long) and uncut fibres (greater than 25 cms. long) or wholly from uncut fibres.  The fibres may be natural fibres or synthetic fibres, e.g. polyamicle fibres or mixtures of different materials.  When continuous fibres are used they are fed from spools to a rolling mill and there is no need to use bonding agent to cause the fibres to stick together. Specification 996,476 is referred to.
Patent GB-244825-A (GB)
Title: Improvements in electrical fuses
IPC: H01H85/42
Filed: 1924-09-23
Abstract: 244,825. Higman, H. P. L. Sept 23, 1924. Fusible cut-outs.-To extinguish or prevent the formation of arcs the fusible conductor is surrounded bv a substance which is normally inert but explodes by chemical reaction with the metallic vapour into which the conductor is converted on a heavy overload. Preferably the fuse consists of a copper wire which passes through a tube containing a mixture of finely divided lime with about 5 per cent of finely divided calcium carbide; one or two drops of water being added to provide a little free acetylene. When the fuse blows the copper vapour and calcium carbide provide the explosion, the lime serving to dissipate and cool the arc-forming metallic vapours. Such fuses are also suitable for ordinary overload protection, the copper then combining quietly with the carbide to form a high resistance tube. To increase the explosive action a little nitro-cellulose or similar explosive may be added to the mixture.
Patent GB-964253-A (GB)
Title: An electrical adaptor
Inventor: CLEWES ANTONY BRASHER
IPC: H01R12/72
Filed: 1961-06-21
Abstract: 964,253. Two-part couplings. CARR FASTENER CO. Ltd. May 30, 1962 [June 21, 1961], No. 22487/61. Heading H2E. An adaptor for connecting an edge connector to a printed circuit panel comprises an insulating plate 1 (Fig. 3) having a series of opposed resilient contact arms 4 adapted to engage the circuitry on the printed circuit panel and connected to conducting members 3 which can be engaged by similar (but more strongly gripping) contact arms on an edge connector. The conducting members 3 may be integral and pass through edge grooves 2. Specifications 811,989 and 843,652 are referred to.