baber/WOPTO huggingface dataset:
Patent GB-671458-A (GB)
Title: Extractive crystallisation process
Filed: 1948-03-24
Abstract: Urea complexes of straight-chain organic compounds are formed by treating a mixture of organic compounds with urea at a series of successively lower temperature levels and separating the complexes formed at each level.  The starting temperature may be about 75-100 DEG  C., and diluents or solvents may be added to the reaction mixture.  Complexes containing varying proportions of urea may be formed by varying the conditions of reaction.  The organic compounds treated, the methods for the separation and regeneration of the straight-chain compounds from the complexes and the applications of the process are those described in Specification 671,456. Specification 671,457 also is referred to.ALSO:Oils are refined by treating with urea at a series of p  successively lower temperature levels and separating the urea complexes formed at each level.  The starting temperature may be about 75-100 DEG C., and diluents or solvents may be added to the reaction mixture.  The complexes may be separated and decomposed by methods described in Specification 671,456 and the applications of the process are also those mentioned in that Specification. Specification 671,457 also is referred to.
Patent GB-942302-A (GB)
Title: Improvements in or relating to machines of a type comprising a rotatable shaft with a tool detachably secured thereto
Inventor: ELLIOT HAROLD ERNEST
IPC: A43D27/00
Filed: 1959-03-13
Abstract: 942,302. Securing tools on shafts. BRITISH UNITED SHOE MACHINERY CO. Ltd. March 14, 1960 [March 13, 1959], No. 8724/59. Heading F2U. A tool such as a cutter 38 for trimming the soles of footwear is fast with a shank 22 which slidably fits within a bore 24 of a driving shaft 10 to which it is drivingly connected by means of a stepped collar 26 fast with the shank and which engages recesses 30 at the end of the driving shaft 10. The shank is secured axially by dogs 56 sliding in radial bores in the shank and engaging recesses 62 in the driving shaft. The dogs are locked in position by a plunger 54 slidable axially in the driving shaft and spring biased to the locking position. To remove the tool the plunger is retracted against its bias to bring a reduced diameter part 68 of the plunger into register with the dogs so that the shaped outer ends of the dogs cam out of the recesses as the tool is withdrawn. When another tool has been inserted the plunger is released and a conical surface 66 of the plunger cams the dogs into the recesses.
Patent GB-496365-A (GB)
Title: Improvements in games-score indicators
IPC: A63F1/18
Filed: 1938-03-22
Abstract: 496,365. Scoring-apparatus for games. DAY, H. A. March 22, 1938, No. 8800. [Class 132(ii)] [Also in Group XIX] A games-score indicator arranged for subtraction comprises a units wheel 1 having holes 10 exposed through a graduated slot 11 for engagement by an operating stylus. The spaces between the holes 10 are equal excepting for the space corresponding to the position of a transfer tooth 7, this space being larger so that the movement during the step 0-9 is greater than that during the' other steps. This greater step allows the transfer tooth 7 to operate and then move clear of an intermediate wheel 6 geared to the tens wheel 2, this latter wheel being normally free for independent operation by a stylus engaged with depressions 8. The depressions 8 are beneath a cover aperture 2 having a projection 12 extending only partly across the depressions 8, so that scores of over one hundred can be registered in one operation.
Patent GB-773148-A (GB)
Title: Improvements relating to fuel systems for gas turbine engine installations
Inventor: COOK HENRY
IPC: F02C7/236
Filed: 1954-03-25
Abstract: 773,148. Gas turbine plant; centrifugal pumps. ROLLS-ROYCE, Ltd. March 25, 1955 [March 25, 1954], No. 8816/54. Classes 110 (1) and 110 (3). [Also in Group XXIX] In a fuel supply system for a series of jet propulsion gas turbine engines 10, see Fig. 2 and also Fig. 1 (not shown), each engine is supplied from a branch line 20 connected to a common supply line 12 fed by two pumping units. Each pump unit comprises a non- return valve 16, relief valves 17, 18 and a centrifugal pump 22 driven by an air turbine 23. Each branch pipe 20 is provided with a regulating valve 21 and a control valve 11 whilst the pipe 12 is provided with a control valve 13. If desired, the fuel injectors of the engine may be of the spring- loaded variable-area orifice type in which case the valve 21 is omitted. Each relief valve comprises a lever 28 loaded by an evacuated capsule 26, a spring 31 and a piston 32 which is subjected to the delivery pressure of the pump. The lever 28 controls the leakage of fuel from a chamber 35 to a drainage connection 37, the chamber 35 communicating through a restrictor 39 with the delivery side of the pump and having a spring-loaded valve 40, 41 controlling communication between the delivery side of the pump and a by-pass connection 44 leading to the tank or the inlet of the pump. In a modification, see Fig. 3, each pump is of the swashplate type and connected to a piston 51 acting in a cylinder 52. One end of the cylinder is directly connected to the delivery pipe 54 of the pump whilst the other end is connected to the pipe 54 through a restrictor 56 and has connected to it a pair of valve-controlled vents 58. Each vent valve 59 is mounted on a lever 60 which is loaded by a spring 61, apiston 62 subjected to the pressure in the pipe 54, and a capsule 64 subjected to atmospheric pressure.
Patent GB-385805-A (GB)
Title: Apparatus for the manufacture of cigar fillers
IPC: A24C1/02
Filed: 1932-03-24
Abstract: 385,805. Cigar-making machines. UNIVERSELLE CIGARETTENMASCHINEN-FABRIK J. C. MœLLER & CO., 48, Zwickauerstrasse, and STELZER, F. H. B., 87, Reisewitzerstrasse, both in Dresden, Germany. March 24, 1932, No. 8835. [Class 130.] In order to keep the tobacco in a loose condition until it is compressed into a filler, it is fed from a container 1 into a funnel-shaped sack 26, the centre 27 of which forms a measuring-receptacle which is raised from the position shown in dotted lines in Fig. 1 to that shown in full lines, so as to take up a charge of tobacco, which is then taken up by a suction head 20 and transferred to a funnel 40 leading to a pair of moulding-chambers 42, in which the tobacco strands are set transversely by oscillating rakes 48<1>. The container 1 is fitted with a stirring-device comprising a cylinder 3 carrying radial blades 12 and rotated by ratchet mechanism 6 .. 10, the tobacco being discharged over the edge x of a cut-away portion 1<1> of the container. Uniform flow of tobacco over the edge x is assisted by a rod 13 pivoted at 14 to a support 18, which is also pivoted at 18a and is oscillated at each transfer of a filler charge, by contact of a finger 19 on the suction head 20 with the support 18. The sack 26 is similar to that described in Specification 342,426, and consists of a cloth member 26 attached at its periphery to a ring 25 and at its centre to the measuring- chamber 27, this chamber being reciprocated vertically by mechanism 35, 37. At the same time, the rod 30 connected to the measuring- chamber is oscillated by a crank disc 31<111>. The charge of tobacco is retained in the measuring-chamber by suction supplied by a pipe 29 until it reaches the suction head 20, whereupon the suction is cut off from the chamber 27 or replaced by pressure, and the charge is then taken up by the suction head. The arm 21 carrying the suction head is then swung to the position shown in dotted lines in Fig. 2, until it comes over the funnel 40, projecting threads of tobacco being removed by a rotating rake 44. Suction on the head 20 is then interrupted, and the tobacco falls into a semicircular channel 41, the charges being fed alternately to a pair of moulding-chambers 42 by an oscillating plate 45. In the chambers 42, the charges are compressed by plungers 43. Pivoted beaters may be arranged below the cloth funnel 26 so as to beat against the sides of the funnel as the chamber 27 reaches the bottom of its stroke. The measuring-chamber 27 is preferably provided with a curved bottom, to the centre only of which suction is applied.
Patent GB-704169-A (GB)
Title: Improvements relating to microfilm readers
IPC: G03B21/11
Filed: 1951-04-16
Abstract: 704,169. Optical-projection apparatus. VISUAL COMMUNICATIONS, Ltd., and VAUGHN, W. G. J. July 7, 1952 [April 16, 1951], No. 8840/51. Class 97(1) In apparatus for projecting microfilm the spools are driven by motors controlled by remote switches to provide film feed in either direction. As shown in Fig. 2, the casing 2 contains lamp and condenser and has cooling fins 7. The casing part 3 supports the objective 8. The film is fed between spools at either side of the objective between glass plates 15, 16, the former fixed and the latter pivoted at 19 and connected to an arm 36 acted upon by the armature of a solenoid 31, when energized, to separate the plates and free, the film. One spool spindle 11, Fig. 3, is driven from a motor 5 through reduction gearing 21, 22, 23, 24, 25, 26 and an epicyclic friction drive with one member held stationary by a pin 29. The other spool spindle s similarly driven but the pin 29 is not provided so that the epicyclic drive does not function as such but as a friction clutch. Fig. 5 shows the connections to the main apparatus and to the remote. control unit 39. A centre-tapped low tension electrical supply is made to the apparatus and one half supplies the lamp 38 through a switch 40. Movement of the switch 41 to the contact b energizes the motor 5, through the contact c of the switch 42, and the solenoid 31. Similarly actuation of the switch 42 energizes the solenoid 31 and the motor 6. The motor 5 is also energized in reverse through the cross connection 43 to feed the film back for rewinding. The reduction gear trains may be built into the respective motors which may also contain clutches which are disengaged when the motors are de-energized. In a modification one member of the epicyclic drive in each spool drive is locked by a solenoid energized simultaneously with the associated motor. Actuation of either solenoid frees the film in the gate.
Patent GB-124330-A (GB)
Title: Improvements in the Manufacture of Non-alcoholic Malt Beer.
Inventor: BLOCK LOUIS
IPC: C12H3/02
Filed: 1918-05-30
Abstract: 124,330. Block, L. May 30, 1918. Drawings to Specification. Materials and compositions for making beverages.-In removing the alcohol from beer by distillation, evaporation is carried on at a temperature of about 60-65 F. under a vacuum of about 28¢ or 29 in. of mercury, and the condenser is cooled by a liquid at or below 32 F., the actual condensing temperature being about 40 F. The beer is brewed in the usual manner, but before being distilled, it may be maintained for some days at a temperature of 32 F. to remove albuminoids, hop resins, and yeast.' A trap for entrained moisture is placed between the evaporator and the condenser. The liquor freed from alcohol is cooled and placed in casks maintained' at a temperature of 32 F., where it is carbonated, either in the ordinary way or by " Krausening," i.e. by placing in the cask a portion of the liquid that has just started fermenting and allowing it to work for about three days.
Patent GB-357493-A (GB)
Title: Method of preparing artificial wool
IPC: D01C1/02
Filed: 1930-03-20
Abstract: Artificial wool is prepared from vegetable fibre, particularly jute, by cleaning the fibres and removing the substance which imparts stiffness, and then treating with substances which will cause the fibres to curl when subsequently dried; the two treatments may be combined in the same bath.  The fibres, after cleaning, are treated in a bath containing chiefly caustic soda, together with sodium bisulphite, powdered colophony and zinc chloride.  This removes gummy and mineral substances.  The fibres are then centrifuged, washed, neutralized with hydrochloric acid, and finally dried.  Bleaching agents such as chlorine or ammonium persulphate may be added to the first bath.
Patent GB-343784-A (GB)
Title: Improvements in operating means for electric condensers or other instruments
IPC: H03J1/14
Filed: 1930-03-21
Abstract: 343,784. Linkwork. WILKINS & WRIGHT, Ltd. and HEWITT, J. H., Utility Works, Holyhead Road, Handsworth, Birmingham. March 21, 1930, No. 9049. [Class 80 (iii).] Operating g means for elect r i c condensers or other instruments comprises a rotatable driving drum 1, a stationary drum 16, and a driven member 12, a chain or other flexible member 18 passing around the drums 1, 16 and also pulleys 15 or abutments on the driven member 12 and being fastened to the drums 1, 16. The driven member 12 is thereby rotated at half the speed of the driving pulley 1. Secured to the driving drum 1 is a hollow control drum 3 carrying on its periphery a scale 4 and driven by friction gearing from a control knob 25. The member 12 is fastened to a sleeve 6 which is fitted with an insulating bush 23 adapted to receive the shaft of the condenser &c. to be controlled, or the shafts of two ganged condensers. The chain 18 is tensioned by a spring 21 within the fixed drum 16. In order to obtain a greater reduction ratio between the driving and driven members, more than one driving and stationary drums may be arranged so that the driven member of the first unit acts as the driving member of the second unit and so on. The member 12 may carry two idler pulleys 15, and two chains may be employed for driving in opposite directions. The control drum 3 may be operated directly by thumb control, or may be in the form of a dial. The drum 3 may be of transparent or translucent material and illuminated from behind. According to the Provisional Specification a single endless chain &c. may be used, attached to the two drums between the two pulleys, and the chain &c. may be wound completely round the two drums for several turns, so as to permit more than one rotation of the driven member.
Patent GB-1180444-A (GB)
Title: Multiple Alarm System
IPC: G08B19/00
Filed: 1967-02-27
Abstract: 1,180,444. Transistor oscillator circuits. GENERAL ALARM CORP. 27 Feb., 1967 [1 March, 1966], No. 9167/67. Heading H3T. [Also in Division G4] An acoustic alarm comprises a tone generator 33 the frequency of which is modulated by a control generator 30 and has provision for changing the frequency and/or waveform of the output of the control generator 30 so as to produce alarm signals of distinctly different character. The circuit shown may be mounted on the inside of a door (Fig. 1, not shown) which may carry a bell push 26, a locking chain 22 and a temperature-responsive bi-metallic element 28. The operation of each of these devices results in a different tone being emitted by the loud-speaker 94. Electronic siren alarm.-Excessive tension on the locking chain 22 closes switch 42 which enables transistors 68, 70 to operate as a multivibrator the frequency of which is swept in sawtooth manner at 1 c/s. between 1200 and 1800 c/s. under control of a sawtooth oscillator 30 comprising a unijunction transistor 44. Electronic horn alarm.-Flexing of the bimetallic elements 28 due to excessive temperature closes contacts 42 and 86 and sets contacts 60 to their upper positions. Contacts 60 introduce variable resistor 64 in the frequency control line of the multivibrator 33 which has the effect of reducing the frequency of the multivibrator and increasing the frequency of the control generator 30 such that the output signal is swept between 400 and 600 c/s. at 30 c/s. Closure of contacts 86 alters the duty cycle of the multivibrator so that the sound is that of a deep-throated horn. Electronic bell alarm.-When the door bell button 26 is depressed, contacts 42 are closed and contacts 54 and 60 are set to their upper positions. Contacts 54 switch the output from the control generator 30 from a sawtooth to a pulse waveform which shock-excites the multivibrator repetitively into oscillation at two different frequencies giving a bell-like sound in the loud-speaker 94. Modification.-Fig. 3 (not shown), depicts a cross-coupled pair of complementary transistors which may replace the unijunction transistor 44.
Patent GB-818052-A (GB)
Title: Improvements in or relating to cathode ray tubes
Inventor: MCVICKERS ROBERT CLARKE
IPC: H01J3/02
Filed: 1956-03-23
Abstract: 818,052. Cathode ray tubes; cathode materials and processing. GENERAL ELECTRIC CO. Ltd. May 29, 1957 [March 23, 1956], No. 9173/56. Class 39(1). In a cathode ray tube the thermionic cathode comprises a metal shell 7 containing electron emissive material arranged to be heated by an element 10 and the shell is provided in a part adjacent to the modulator 5 with an aperture 8 for the emission of electrodes, the aperture being arranged in alignment with and being of smaller diameter than, the aperture 13 in the modulator. The modulator may be in the form of a plate or dish, the apertures 8, 13 may be both circular and the diameter of the aperture 13 is two to four times that of the aperture 8. Preferably the modulator aperture is about 1 mm. and the cathode aperture about 0À3 mm. As shown the first anode 6 is in the form of a hollow cylinder with the end nearer the cathode 4 tapering so that the aperture 14 at its end is approximately the same diameter as the aperture 13. As shown the cathode shell consists of a metal cylinder 7 preferably of nickel with an apertured closed end directed towards the modulator but in two other embodiments the cathode shell consists of a narrow metal tube the opening at one end of which provides the cathode aperture. In a multi-gun form, the cathode shell is provided with two or more apertures each aligned with, but smaller in diameter than, a corresponding aperture in the modulator. The electrons are emitted from a porous mass 9 consisting preferably of a sintered mixture of refractory metal powder such as nickel or tungsten and of powdered emissive material such as a mixture of 70 per cent. of weight of nickel powder and 30 per cent. by weight of a triple oxide of barium, strontium and calcium together with e.g. 0À01 per cent. by weight of silicon, titanium or zirconium. Alternatively no reducing agent is present in the mixture but at least the closed end of the cathode shell is formed of titanium. Alternatively an activiting layer consisting of a sintered mixture of powdered nickel and a powdered alloy of nickel and titanium may be provided on a porous mass comprising the alkaline earth oxides and nickel. In forms having the aperture at the end of the tube comprising the cathode shell, the porous mass extends substantially the whole length of the tube. The porous mass may be formed by pressing 70 per cent. of carbonyl nickel powder with 30 per cent. powdered barium strontium and calcium carbonates and 35 per cent. of a 70-30 nickelsilicon alloy at 80 tons/sq. in. and sintering in situ in the tube at about 1050‹C. using the cathode heating element. Suitable working electrode potentials are given in the Specification. Specification 818,051 is referred to.
Patent GB-406495-A (GB)
Title: Method of purifying gases from sulphuretted hydrogen
IPC: C10K1/20
Filed: 1933-03-27
Abstract: 406,495. Purifying processes. JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.-(Gastechnik Ges. ; 11, Wilmsstrasse, Oberhausen, Rhineland, Germany.) March 27, 1933, No. 9209. [Class 55 (ii).] Gases are purified from sulphuretted hydrogen by passage through a high tower packed with porous moulded bodies consisting mainly of ferric oxide. Towers of increasing crosssection with height may be used and water or solutions of ammonia or soda trickled down them to activate the purification bodies. The bodies are prepared by briquetting ferric oxide with a binder such as sulphite liquor, water glass &c. together with organic matter or readily decomposable salts which on heating increase the porosity of the bodies.
Patent GB-829107-A (GB)
Title: Process and apparatus for the production of toothed members, such as toothed wheels, toothed rims and the like
IPC: B21K1/30
Filed: 1956-03-26
Abstract: 829,107. Forging toothed gears. SCHONDELMAIER, C. March 26, 1956, No. 9283/56. Class 83 (4). Toothed gears are made by compressing a toroidal blank 1 within a die cavity 5 provided with negative teeth 10 into which the material of the blank is caused to flow. The die assembly comprises a body 4 provided with the teeth 10, a core 2 having a mandrel 11 and a press ram 3 having a recess 12 into which the mandrel engages for centring the ram. As the ram moves downwardly, opposed pressure surfaces 6, 7 cause the blank material to flow laterally into spaces 8, 9 to form a hub and into the tooth spaces 10, thereby to produce a gear 1<SP>1</SP>, Fig. 4 (not shown). After withdrawal of the ram, the core 2 is moved upwardly to eject the finished gear from the die. In another embodiment, Fig. 6, an internally-toothed hub gear 14 is formed, the negative form of the teeth 19 being provided in the peripheral surface of the ram 3.
Patent GB-928288-A (GB)
Title: Improvements relating to electrical lampholder adaptors
Inventor: BUSH ALBERT GEORGE
IPC: H01R33/46
Filed: 1961-03-14
Abstract: 928,288. Two-part couplings. DAVIS & TIMMINS Ltd. March 12, 1962 [March 14, 1961], No. 9318/61. Class 38 (1). A bayonet-fitting lampholder adapter comprises a body 1 having two bores in each of which a contact pin, e.g. 8, is slidably fitted, each contact pin having a cross pin 12 extending from its side, the cross pins being clamped in position in notches in the body 1 by a flanged member 17 when the cap 18 is screwed home. In a modification, Fig. 3 (not shown), the member 17 is omitted and the barrier between the terminals is integral with the body 1.
Patent GB-662182-A (GB)
Title: Improvements relating to electric lamps
Inventor: FIELD BRAHAM ROWLEY
IPC: F21L4/00
Filed: 1949-04-06
Abstract: 662,182. Miners' and like lamps. ALKALINE BATTERIES, Ltd. April 4, 1950. [April 6, 1949] No. 9357/49. Class 75(iv). In an electric hand lamp, particularly of miner's hand lamp type, the lamp carrying handle or hook a is connected by a hook bolt i to a transparent or translucent dome d around the lamp bulb. The dome d may be of plastic material and be of cylindrical form having a flange f for holding it in the battery casing lid g.
Patent GB-199354-A (GB)
Title: Improvements in or relating to processes for the manufacture of diphenyl guanidine
IPC: C07C277/08
Filed: 1923-04-05
Abstract: Diphenylguanidine is prepared by treating diphenylthiourea suspended in a solution of ammonia and water with a metallic compound, such as zinc oxide, lead oxide or lead carbonate, capable of eliminating the sulphur from the thiourea.  According to the example, symdiphenylthiourea is heated with zinc oxide and strong aqueous ammonia, each in excess, to a temperature not exceeding 80 DEG  C. The resulting mixture of diphenylguanidine, zinc sulphide and zinc oxide may, after filtration and drying, be used directly as a vulcanization accelerator; or the diphenylguanidine may be separated by boiling the mixture with hydrochloric or other acid, neutralizing the excess of acid with sodium acetate or similar salt, introducing hydrogen sulphide to precipitate the zinc, filtering, and finally liberating the diphenylguanidine from its salt by means of alkali. If lead oxide be used instead of zinc oxide, the reaction product is digested with sulphuric acid and the diphenylguanidine sulphate solution filtered off.  The Specification as open to inspection under Sect. 91 (3) (a) states also that disubstituted guanidines are obtained by treating symmetrically disubstituted thiourea in the manner above.  This subject-matter does not appear in the Specification as accepted.