baber/WOPTO huggingface dataset:
Patent GB-230799-A (GB)
Title: Improvements relating to electromagnetic sound reproducing devices
IPC: H04R7/18
Filed: 1925-01-30
Abstract: 230,799. Brigham, C. E. March 13, 1924, [Convention date]. Loud-speakers; receivers; diaphragms.-Relates to the clamping of the diaphragm and to other.details in loud-speakers designed for mass production. The diaphragm is clamped between two washers each of which comprises a thin layer of linen and a thin film of rubber, the latter being in contact with the diaphragm. To facilitate centering, the outer edge of the diaphragm and washers may coincide with that of an annular projection 23 on the cap 14, and the dimensions may be such that the top screw thread embraces the lower washer. Alternatively, the outer edges of the washers may fit exactly against the plain part 24 of the inner surface of the cap 14. The horn 22 fits into a ferrule 20 screwed into the cap 14, and the cap, which may be sealed in position by the introduction of sealing material at 28, is provided with depending tongues 29 to facilitate mounting the instrument on a base.
Patent GB-489569-A (GB)
Title: Improvements in or relating to hat boxes, or like containers
IPC: A45C11/02
Filed: 1937-01-29
Abstract: 489,569. Containers. MEYER, M. C. Jan. 29, 1937, No. 2721. Convention date, Dec. 18, 1936. [Class 18] A cylindrical container such as a hat box is provided with an opening in the side-wall, and a door, sliding in circumferentially disposed guide tracks. The door is preferably wholly or in part transparent; or the whole container may be made of celluloid or cellulose acetate. The guide tracks may consist of circular gores cemented to the top and bottom, or double ribs 14 and 15 or a single rib may be impressed therein. To provide a knock-down construction the top and bottom may be provided with flanges 13 to fit closely around the side-wall 11, the over-lapping edges of which may be secured by snap fasteners.
Patent GB-226392-A (GB)
Title: Improvements in airships
IPC: B64B1/00
Filed: 1924-02-02
Abstract: 226,392. Parseval, A. von. Feb. 2, 1924. Aerostats.- In an airship of the kind composed of a number of gas-cells I - - V, Fig. 1, enclosed within an envelope a, in which a constant air-pressure is maintained, (for example by means of fans and valves) for regulating the size of the cells in accordance with the degree of inflation, the lower parts of the cells are connected to the envelope by guy ropes m, so arranged that while contraction and expansion of the cells in a vertical direction is not interfered with, deformation in the axial direction of the aerostat is prevented when the aircraft tilts. The cells I - - V are connected to the envelope a along a horizontal line y just below the median plane of the aerostat, and along circumferential lines y' extending over the upper part of the cells approximately to the line y. The ropes m may conveniently be so arranged that they normally lie in an approximately horizontal direction. To prevent overstraining the walls of the cells when the airship tilts, the end walls are connected to the side walls by triangular pieces of fabric i, k, Fig. 4, arranged parallel to one another in both the horizontal and vertical planes and extending to the lines y<1> so that the stress is transferred to the envelope.. In a modification the fabric strips i, k are replaced by parallel cords connected to the walls by fabric strips, l, Fig. 5. Cars and cabins.-The space between the lower portion of the gas-cells and the envelope accommodates a gangway n, by means of which communication is established between a front cabin d and a rear engine gondola f reached by a ladder g below an inwardly-opening trap door h. The front car d communicates with the interior through an airtight passage e having double doors at each end.
Patent GB-310564-A (GB)
Title: An improved free-wheel clutch for motor vehicles and the like
IPC: F16D41/07
Filed: 1928-01-28
Abstract: 310,564. Miller, W., and Lamb, H. T. Jan. 28. 1928. Clutches, ratchet; facilitating changing speed.-A ball, roller, or ball-androller free-wheel clutch for motor vehicles &c. comprises a . driving- member 2, Figs. 1 and 2, mounted on an extension 1 of the gear-box tailshaft and carrying in each of its slots 2b preferably two rollers &c. 4, 5, the inner rollers 5 contacting with the boss of the propeller-shaft member 3 and the outer rollers 4 with doubleended sliding wedges 6, which coact with the interior of the part 3, this construction resembling the ratchetgear clutch shown in Fig. 9 of Specification 271,338, [Class 80 (iii), Linkwork &c.]. Stops 7 on a sliding collar 8 normally engage the wedges 6 to prevent their reverse slopes 6<b> from being operative, but can be withdrawn by a manual control 15 acting through linkage 10, 12 - - 14 on a fork 9, if the engine is to be used as a brake, and when so withdrawn, are obstructed by the wedges until the engine again drives. The control 15 lies in the path of the change-speed lever 16, so that the clutch is automatically rendered bidirectional when reverse-gear is engaged. Elastic " takeup " of the clutch is ensured by the presence of oil between the wedges 6 and member 3. A single roller in each slot 2b may be used if clearance is provided in the slots to allow, free rolling action. The double-ended wedges may be replaced by sets of forward and reverse singleended wedges, Fig. 4 (not shown), arranged either alternately or side-by-side in two rows, the stops 7 acting only on the reverse wedges. Fig. 3 shows a modification, in which the rollercarrier 19 is loose, a single or other odd number of rollers 20 in each slot coacting with the inner driving-member 17 and with the double wedges 6, which grip the outer driven member 18. The stops 7 slide on the loose cage 19.
Patent GB-305033-A (GB)
Title: A new or improved chemical reaction apparatus
IPC: B01J19/24
Filed: 1929-01-28
Abstract: 305,033. Huessy, W., (Assignee of Bals, M.). Jan. 28, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Motor spirit. - An apparatus for the production of motor spirit by passing a mixture of alcohol and kerosene through molten lead as described in Specification 267,530, comprises a number of reaction tubes 15 enclosed within a heated casing 2 and having at their lower ends injector nozzles 14 communicating with a chamber 13 into which the reacting material is fed from a pipe 12. The casing 2 is heated by burners 4, 5, 9 and is filled with lead to the level x. The, lead entrained by the streams of vapour passing up tubes 15 is returned to the casing from the turned-over ends 16 of the tubes and the products of the reaction pass off through a pipe 17. The mixture of kerosene and alcohol may be preheated in a casing 21 heated by burners and containing molten lead to the level y. The mixture is forced through a pipe 29 into a pipe 27 dipping below the surface of the lead.
Patent GB-973497-A (GB)
Title: Machine for the planting of rice seedlings
IPC: A01C7/20
Filed: 1961-01-25
Abstract: 973,497. Planting machines. A. VALDI. Jan. 25, 1961 [Aug. 25, 1960], No. 2866/61. Heading A1D. A machine for planting rice seedlings comprises a rotatable gripper 3 which takes hold of seedlings in a hopper 2 and drops them into a shoot 4 where they are held by a member 22 and released from the member and planted by means of a blade 29 in a reciprocating rod 28. The gripper 3 comprises an arm fixed in a drum 8 and an arm which is moved by a rod 14 provided with a roller which co-operates with a cam face. The seedlings are shaken to the bottom of the shoot by means of a plate 69 which is moved by lever 71 which co-operates with a projection on the drum 8. The member 22 is moved by a cam 26 to release the seedlings and this movement is synchronised with the movement of the rod 28. Means are provided for moving the seedlings in the hopper 2 so that they may be picked up by the gripper 3 and comprises a fork 45 which is given a lateral movement to align the seedlings. A reciprocating shutter 52 conveys the seedlings to the opening 6 of the hopper and the seedlings are pushed down towards the gripper by a cam operated pusher 59. The machine is towed by a tractor and driven from the power shaft of the tractor. A box 81 is provided to support the machine operation and to carry the rice seedlings. A plate is provided below the box and is formed with projections 84 to form furrows in the ground.
Patent GB-911982-A (GB)
Title: Improvements relating to automatically controlled grinding machines
Inventor: JONES JOHN CYRIL
IPC: H02P29/00
Filed: 1960-01-27
Abstract: 911,982. Automatic control of grinding- machines. CHURCHILL MACHINE TOOL CO. Ltd. Jan. 9, 1961 [Jan. 27, 1960], No. 2911/60. Class 38 (4). [Also in Group XXIII] In an automatic control system for a grinding machine, a grinding wheel is fed in an inward direction during rough-grinding when the load current of a motor driving the grinding wheel falls below a pre-set value. For finish grinding a change-over switch is manually actuated so that the grinding-wheel is fed in an outward direction until the load current falls to the pre-set value, the pre-set value being reduced at intervals so that successively lighter pressures occur between the grinding- wheel and a workpiece. As shown, a grinding- wheel motor 1 is energized from a directcurrent supply 5, 6 through a signal winding 4 of a magnetic amplifier. A bias winding 10 of the magnetic amplifier is energized from an alternating-current supply through a rectifier 9 and a potentiometer LR which is adjusted so that when the motor load current falls below a desired value a relay 1RL, energized through main windings 11 and a rectifier 12, is actuated to close a contact 1RL1 and open a contact 1RL2. A switch C1-C3 is manually operated to select rough or finish grinding and in the position shown is set for rough grinding so that closure of contact 1RL1 causes, through a manual switch 18, a timer TDC to operate after a delay to close a contact TD1 to actuate a relay R which is maintained through a contact R2 and energizes a feed-motor winding 15 through a contact R4 to cause the grinding- wheel to be fed inward until the motor load current is increased to the value at which relay 1RL opens contact 1RL1. The timer is by-passed by manually changing over switch 18. For finish grinding the switches C1-C3 are actuated to energize a winding 16 of the feed motor so that the load-current of the motor 1 is reduced to the desired value set by the potentiometer LR. The potentiometer is manally positioned for successively lower motor load currents to cause successive reduction in grinding pressure. A feed-back winding 13 of the magnetic amplifier is energized from a rectifier 14. Specifications 650,069 and 694,258 are referred to.
Patent GB-576620-A (GB)
Title: Improvements in automatic speed governing means controlling eddy current clutches
IPC: H02P29/00
Filed: 1942-03-06
Abstract: 576,620. Automatic control systems for eddy current clutch drives. WINTHER, M. P. March 6, 1942, No. 2939. Convention date, June 28, 1941. [Class 38 (iv)] Speed.-The excitation of an eddy current clutch C is supplied through grid-controlled rectifiers RT and a tapping 10 on a potentiometer predetermines the speed of the output shaft by imposing a definite voltage on the grids G. A generator AL on the output shaft produces an opposed potential, which increases with the speed of the shaft, in a resistance R1 in series with the potentiometer voltage so that any deviation from the speed preset causes a change in clutch excitation to correct the speed. The generator is preferably a permanent magnet machine of comparatively high frequency. As shown the generator output is taken through' a full-wave rectifier tube RE2 but dry rectifiers, e.g., of the selenium type, are used in a modified arrangement. To prevent hunting due to the time constant of the control a condenser may be connected across a resistance in series with that producing the opposed potential aforesaid, so that a transient potential change is induced which advances the control effect. The predetermined value of grid potential may be obtained differentially from two potentiometers in parallel. The Specification as open to inspection under Sect. 91 states that the generator AL may be a D.C. machine. This subject-matter does not appear in the Specification as accepted.
Patent GB-1151672-A (GB)
Title: Improvements in and relating to Carbon Paper Waxes
IPC: C10G73/00
Filed: 1968-01-19
Abstract: 1,151,672. Modified montan wax. FARBWERKE HOECHST A.G. 19 Jan., 1968 [23 Feb., 1967], No. 3007/68. Heading C5W. A carbon paper wax is obtained by reacting. crude resin-free or resin-containing montan wax with or without montan resin with 2-10% of its weight of maleic anhydride in. the melt at a temperature below 300‹ C., preferably 180- 280‹ C. The reaction may be followed by esterification with 1-6%, based on the original wax or wax/resin weight, of a C 1 -C 4  glycol at 190-200‹ C., excess glycol being removed. Ethylene glycol is preferred; propylene, butylene and diethylene glycols are also specified.
Patent GB-1384531-A (GB)
Title: Fusion arc welding
IPC: B23K9/073
Filed: 1971-01-25
Abstract: 1384531 Welding by fusion BABCOCK & WILCOX Ltd 11 Feb 1972 [25 Jan 1971] 3047/71 Heading B3R [Also in Division G3] In fusion arc welding using a non-consumable electrode, some protrusion of fused metal beyond the workpiece faces remote from the electrode takes place while the arc power supply is controlled to maintain constant arc power. As shown in Fig. 1, tubes 1, 2 for end butt welding are rotated below a tungsten-containing electrode 4 in a holder with an inert gas supply (e.g. of argon). A filler wire may be used. If the tubes cannot be rotated, the electrode is orbited around the joint, Fig. 8, and the D.C. power supply is controlled to operate in a constant power mode for part of the orbit' and constant current mode for other parts of the orbit. A rotatable welding head 54 may be similarly used for joining a tube end to an apertured plate; Fig. 9. In each case, the object is the production of a uniform weld irrespective of variation in workpiece thickness, and without causing excessive protrusion'within a tube resulting in flow obstruction. A constant power supply circuit is described, Fig. 5 (not shown), see Division G3.
Patent GB-414381-A (GB)
Title: The manufacture of azodyestuffs and intermediate products therefor
IPC: C09B41/00
Filed: 1933-02-01
Abstract: Complex chromium compounds of 4-amino-1-phenol-2-carboxylic acid and its nuclear substitution products (e.g. alkyl, alkoxy, nitro halogen and sulpho derivatives) are made by treating the acid or a salt thereof with a trivalent chromium salt in the presence of a solvent with or without the addition of a non-diazotisable organic base.  In examples (1) and (2) 4-amino-1-phenol-2-carboxylic acid is refluxed with pyridine and chromium trichloride or sulphate in aqueous solution to form a chromium-pyridine complex compound; the pyridine may be omitted; (3) 4-amino-6-methyl-1-phenol-2-carboxylic acid is treated as in (1); (4) 6-sulpho-4-amino-1-phenol-2-carboxylic acid is treated with triethanolamine and chromium sulphate in aqueous solution.  Azo dyes are made by tetrazotising the above complex chromium compounds and coupling with two molecular parts of a coupling component.  The dyes containing chromium may be treated to remove the chromium and those containing the non-diazotisable base and chromium may be treated to remove the said base or the said base and the chromium.  The chromium compounds of the tetrazo compounds have better coupling capacity than the unchromed compounds.  In examples the following dyestuffs are described: (5) the complex chromium-pyridine compound of 4-amino-1-phenol-2-carboxylic acid \sQ salicylic acid (light yellow on wool-red on after-chroming); (6) the complex chromium-dimethylaniline compound of 4-amino-1-phenol-2-carboxylic acid \sQ 6 - methyl - 1 - phenol - 2 - carboxylic (yellow); (7) the tetrazo compound of the complex compound described in (1) is coupled with 2-naphthol-8-sulphonic acid; the corresponding chromium-triethanolamine compound may also be used; (8) the chromium compound of 4-amino-1-phenol-2-carboxylic acid \sQ 2-naphthol-3 : 6-disulphonic acid (yields a bluish-red barium lake); (9) the complex chromiumtriethanol compound of (4) \sQ salicylic acid; by treatment with acid the base and chromium are removed; the chromium compound of 4-amino-1-phenol-2-carboxylic acid is tetrazotised and coupled with 6-sulpho-1-phenol-2-carboxylic acid. Other coupling components specified are amino- and diaminobenzenes and naphthalenes, hydroxy and dihydroxybenzenes and naphthalenes, aminophenols and naphthols, amino- and hydroxycarbazoles, pyrazolones, acylacetic arylides and methylketone.  The dyes which contain a diazotisable amino group may be further diazotised and coupled.
Patent GB-701350-A (GB)
Title: Electrical plug and socket connectors
IPC: H01R13/502
Filed: 1952-02-06
Abstract: 701,350. Two-part couplings. BENDIX AVIATION CORPORATION. Feb. 6, 1952 [Feb. 15, 1951], No. 3174/52. Class 38 (1) In a plug-and-socket connector A, B, the socket, B, comprises a tubular metal shell 11 enclosing a resilient insert 9 carrying the socket contacts 10, a rubber covering 22 on a metal shell 18 of the plug A surrounding and gripping the forward end of the shell 11 to hold the connectors A, B, together, in which condition the contacts 10 receive contact pins 16 mounted in an insert 17 in the shell 18. The contacts 10, 16 and inserts 9, 17 may be as described in Specification 648,675. An annular space between the shell 11 and the insert 9 may receive the end of a metal shell 18. The shell 18 has welded thereto at 21 an outer reinforcing tube 20, the rubber covering 22 embedding the tube 20 and the rear portion of the shell 18. To increase the holding action of the covering 22 the shell 11 has a pair of circumferential ribs 14, at least one rib cooperating with a groove 30 in the covering 22. The plug and socket are aligned by a key 19 in shell 11 engaging a slot in shell 18. The cable 24 is retained in a passage 23 in the covering 22 by a U-shape sheet metal clamp 26 embedded in the covering 22 and tightened by a bolt 28 accessible through a passage 27. To exclude moisture from the socket B when the plug A is removed, a cover 31 hinged at 32 on a bracket 33 secured to a flange 12 on the shell 11, is urged by a spring 34 so that a gasket 37 on the cover 31 engages the end of the shell 11. A lip 38 on the cover 31 engages a groove 39 in the covering 22 to provide additional locking between the plug and socket. To protect the plug contacts 16 when disconnected, a bracket 40 welded to the tube 20 pivotally supports on a pin 42, a member 41 carrying a cover 44. A coil spring 43 urges the member 41 to move the cover 44 to engage the end edge 47 of the covering 22. To facilitate engagement of the plug with the socket the cover 44 may be locked in the chain-line position by a sheet metal slide 48 slotted to receive the pin 42 and shaped to rest on an extension 49 of the bracket 40. The slide 48 has a lug 50 having locking engagement with a slot 51 in the member 41, and may be moved automatically to the non- locking position by the forward end 52 engaging the flange 12 or other stationary part during engagement of the plug.
Patent GB-300052-A (GB)
Title: Safety-lock for railway freight-cars
IPC: E05B65/14
Filed: 1928-02-01
Abstract: 300,052. Burgsm³ller, H. Feb. 1, 1928. Fastenings for sliding doors; locks, square-key and like; pneumatically controlled fastenings; striking-plates and staples for locks; stud-andsocket fastenings. - A fastening for the sliding door b of a railway freight car comprises a pin c inserted through registering openings in a fitting x on the car wall and the overlapping door, and secured by a bolt g entering an aperture in the pin c. Bolt g is normally shot by a spring b but is withdrawn to allow insertion of pin c by a key i with a pivoted bit k which in its depending position, engages a notch m in the bolt. The bolt g may be locked against the operation by a piston bolt f normally retracted by a spring n, but operable by compressed air or steam supplied through a pipe o under control of a valve, not shown. A number of cars constituting a train may be pneumatically locked simultaneously.
Patent GB-914773-A (GB)
Title: Magnetic precipitates
Inventor: STICKLAND FREDERICK GEORGE WIL
IPC: C04B35/26
Filed: 1960-01-29
Abstract: Magnetic precipitates are prepared by precipitating between 40 DEG and 95 DEG C., the mixed carbonates and hydroxides of iron, zinc and nickel from solutions of the metal salts and then heating, for example in an autoclave, the liquid containing the precipitate in suspension within the range 110 DEG  to 250 DEG C. at super-atmospheric pressure.  The precipitates are formed by the reaction of alkali metal carbonates or hydroxides with solutions of salts of the metals concerned.  The processes of separation from the liquid and subsequent washing are accomplished by stirring the precipitate and passing the suspension, followed by an appropriate quantity of washing water, over a magnetic weir.  Alternatively, an electromagnet may be provided beneath the reaction vessel so that the precipitate may be held in place while the liquid is poured away.
Patent GB-997531-A (GB)
Title: Aluminium annealing furnace
IPC: F27B9/02
Filed: 1963-01-28
Abstract: 997,531. Continuous annealing furnaces. HOLCROFT & CO. Jan. 28, 1963 [Feb. 26, 1962], No. 3362/63. Heading F4B. A continuous forced convection type furnace for annealing aluminium coils C comprises a refractory lined heating chamber 14 with gasfired radiant U-tubes 30 disposed vertically behind stainless steel baffles 32 and circulating fans 36 of the squirrel-cage impeller type with intakes 37 in a shroud 38, a cooling chamber 16 in which the furnace atmosphere is circulated by similar fans over water-cooled tubes in the side walls, and an air cooling chamber 18, the various chambers having rollerway conveyer sections 110 and doors 72, 80, 90 and 92. The latter are suspended by cables and each is operated by a chain and sprocket drive incorporating a clutch associated with the appropriate section of the rollerway conveyer for sequential operation, Fig. 6 (not shown). The baffles 32 have ports 34 to assist circulation of the atmosphere and the door 80 has ports 86 for passage of the atmosphere between chambers 14 and 16. Steel openwork racks 120 convey the coils and charging and discharging rollerway conveyer sections are provided at the furnace ends. A control panel, limit switches and interlocking devices are provided so that the coils enter, leave and pass through the furnace automatically.
Patent GB-325497-A (GB)
Title: Improvements in bobbin strippers
IPC: B65H73/00
Filed: 1928-11-16
Abstract: 325,497. Terrell, E. A. Nov. 16, 1928. Divided on 325,494. Bobbins, stripping waste from. -In a bobbin-stripping machine wherein the waste is removed from the bobbin by stripper blades, a number of stripper blades 45, Fig. 2, are used disposed in opposing sets of two stripper blades each located on opposite sides of the longitudinally middle line of the machine. The blades are mounted to move lengthwise in separate guideways and held down by cover plates 46. The blades are reciprocated through levers 168, 169 loosely mounted on rock shafts 179 carrying arms 166, 171 fast thereon, the motion of the rock shafts being transmitted yieldingly from the arms 166, 171 to the levers 168, 169 and to the stripper blades 45 through springs 41 on bolts 40 secured to lugs 1681. The limit of movement of the stripper blade is adjusted by screws on the arms 166, 168. The bobbin guideway or shoot for feeding bobbins to the bobbin rests 47 of the machine is described in Specification 325,496. The gripper jaws 29, 30 and their operating mechanism by which the bobbins are drawn longitudinally of the machine are described in Specification 325,498. The construction of the stripper blades and of the shutter 36 and its operating mechanism, and of the clearers or wipers 123 for the bobbins, are described in Specification 325,494.