baber/WOPTO huggingface dataset:
Patent GB-497060-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03G7/04
Filed: 1937-06-09
Abstract: 497,060. Valve amplifying circuits. BLUMLEIN, A. D. June 9, 1937, No. 15938. [Class 40 (v)] An amplifier, particularly for television signals includes an impedance common to the input and output circuit of a valve and producing negative feedback and of such a character that its value varies in dependance on the instantaneous value of current flow therethrough so as to vary the gain. The impedance may comprise a resistance shunted by a biassed diode rectifier, Fig. 1 (not shown). The Figure shows a resistance 2 shunted by a triode 11 the bias of which is adjusted to give the change in gain at the required signal level. A resistance 15 may be arranged in series with the triode 11 to prevent this valve exerting too great a shunting action. Specification 479,485 is referred to.
Patent GB-598382-A (GB)
Title: Improvements in or relating to phonographs
IPC: G11B3/00
Filed: 1945-06-27
Abstract: 598,382. Phonograph pick-ups. KLEBER, J. O. June 27, 1945, No. 16362. Convention date, May 20, 1944. [Class 40 (iv)] [Also in Group XXXVIII] A pick-up in a phonograph, designed particularly to produce a strong attractive magnetic force between the pick-up and the turntable, for the purpose of holding the pick-up in the groove of the record, is constructed in a thin non-magnetic housing 36, and may include a non-magnetic angular frame 37 to carry the polepieces 41, 42, the bar-magnet 45 and the stylus assembly, which is mounted on the polepieces 41, 42 by means of a non-magnetic bracket 40 fixed by screws 43. The polepieces 41, 43 are slotted to support the coil 53. The stylus may be a sapphire 46 fixed in the lower edge of a small armature 47 of magnetic material, the upper edge of which is soldered to a phosphor-bronze strip 48, which may have an inverted V-shape cross-section. The strip 48 may be secured to similar V-shaped recesses in the bracket 40 by means of screws 51 and blocks 52. The pick-up is mounted on an arm counterbalanced to prevent side pressure when the machine is tilted, so that the pressure on the record is always perpendicular to it. Details are also given of a magnetic pick-up rest, means to prevent the lid of the machine being closed whilst playing, means by which the motor is switched off when the lid is closed and while the pick-up is in the inoperative position, and means of indicating the position of the pick-up by illumination in the pick-up arm.
Patent GB-149658-A (GB)
Title: Improvements in fluid pressure turbines
IPC: F01C1/46
Filed: 1920-06-17
Abstract: 149,658. Arato, A. Aug. 9, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Movable-abutment type having rocking abutments; packing drums; valves, cut-off; working- fluid supply.-Working fluid is admitted to a chamber, between a tooth 6 on the rotor and a rocking abutment 5, by a rotary cut-off valve 9 actuated by chain-and-sprocket gearing from the engine shaft. The abutment may be operated directly by the tooth 6 or by a cam-gear. The valve 9 may be arranged within a hollow centre of the rocking abutment. A centrifugal seal is provided for the rotor sides by grooves 26 in the casing entered by flanges on the rotor. Lubricating-oil is held in these grooves by centrifugal force. Fig. 8 shows a combination of rotary engine and reciprocating pump; the latter supplying compressed air which, after further heating, is used to drive the engine. The inlet and outlet valves are formed in one piece; a hollow rotary member 18 being provided with an oblique partition 18<1> and suitable ports 18<3>, 18<4> to connect the pump cylinder alternately with the inlet 22 and the discharge 23.
Patent GB-1172441-A (GB)
Title: Roll-Stabilized Gimbal for a Gyroscopic Instrument
IPC: G01C19/38
Filed: 1967-04-11
Abstract: 1,172,441. Aircraft instruments. ELECTRONIC COMMUNICATIONS Inc. 11 April, 1967 [11 April, 1966], No. 16451/67. Heading B7W. [Also in Division G1] A roll stabilized gimbal 10, forming the mounting for a gyroscope in an aircraft &c. instrument, is supported in a frame 14 by a shaft 19, the gyroscope consisting of inertial masses 12, 13 and a motor 11 the speed of rotation of which is varied by a system 68-70, 75 in accordance with the speed of the aircraft. A toothed ferromagnetic wheel 73 rotates with the gyroscope and causes fluctuations in the reluctance of the air gap between it and a magnetic member 72 fixed to the gimbal 10, these fluctuations being detected by a coil 74 connected to the gyroscope speed sensor 75. The shaft 19 is mounted on the roll axis 17 and sudden roll displacements are resisted by a dashpot and lever arrangement 21-24. A yoke 26 is secured to one end of the shaft 19 and supports a horizon ball 31 on an axis 28. A pendulum 32, pivoted about an axis 33 and having a weight 34, correctly positions the ball in accordance with pitch of the aircraft by engagement of a pin 36 in a slot 37 of the ball. The device is used in conjunction with an indicator panel including a horizon window 43 and a horizon reference marker 45 carried by a vertical rod 46. A knob 49 enables vertical adjustment of the marker 45 and a further pendulum 53 indicates the direction of the resultant of the gravitational and centrifugal forces acting on the aircraft. The pendulum 53, which is pivoted at 55, is ring shaped and carries an indication 54 observable in a window 57. A third window 58 permits viewing of a pointer 38 attached to the yoke 26. During a turning manoeuvre of the aircraft, the gyroscope will tend to precess about the roll axis in the opposite sense to the roll. This tendency is counteracted by the restoring torque supplied by springs 65, 66. In a modification, the device is adapted to give an indication of the rate of change of altitude, i.e. of ascent or descent.
Patent GB-221893-A (GB)
Title: Improvements in and relating to means for handling or transporting parcels, bales ofgoods and the like
IPC: B65G7/12
Filed: 1923-06-25
Abstract: 221,893. George, D. June 25, 1923. Lifting-dogs; lifting-cradles.-In a lifting appliance for gripping loads such as bundles of blackplates &c. of the type comprising L-shaped arms 15, 17 and pivoted cams or levers 21 which are connected with the lifting chains 23 and bear on the load at points substantially vertically beneath their pivots, the arm of the lever 21 engaging the load is equal to or greater than the arm connected with the lifting chain. The angle between the parts 15, 17 may be slightly less than 90‹, and the inner ends of the feet 17 and 22 may be broad. Packing 24 may be inserted between the feet 22 and the load, and to accommodate dirferent loads, different thicknesses of packing may be used, the length of the lever 21 may be varied, a number of pivot holes being provided in the lever for this purpose, or interchangeable levers 21 of different sizes may be used. As shown in Fig. 4, the foot 22 is pivoted to the lever 21 and is adjusted by a turnbuckle 25. Alternatively, the member 15 may be of adjustable length. When more than one pair of dogs is used, the chains 23 are spaced by spreaders. The dogs on each side of the load may be connected by longitudinal members. To permit of withdrawal of the feet 17 after the load has been deposited in a confined space, the foot 17<a> is hinged to the vertical member 28, Fig. 5, but the hinge is normally locked by a pin 33. When the lever 21 has been released from the load, the lifting chain is slackened and an extension 34 of the lever 21 is connected to a chain 35 attached to the looking pin. On hauling the lifting chain, the pin 33 is removed from the hinge and the dogs are then raised, the feet 17<a> being drawn from beneath the load. Guides may be provided for the locking pin. The chain 35 may be replaced by a hooked rod or link 39, Fig. 9, brought into position to engage the member 34 by a hand-lever against the action of a spring 41. A sliding rod in place of the pivoted link 39 may be connected with the member 34 by a sliding bolt. In another form the hinge is locked by a spring-pressed sliding member on the part 15 engaging a projection on the boss of the hinged foot. As shown in Fig. 12, the locking pin 33 terminates in a hook 48 which may be automatically engaged by a ring 49 on the lever 21 when the latter is depressed. The levers 21, 22 may be locked in the gripping position by pawls 51 on the member 15 engaging ratchet wheels on the levers.
Patent GB-1508388-A (GB)
Title: Derivatives of 9-hydroxy-ellipticine and a process for their preparation
IPC: C07D471/04
Filed: 1976-04-23
Abstract: 1508388 9-Hydroxy-5,11-dimethyl-(6H)- pyrido[4,3-b]carbazole derivatives AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 23 April 1976 [25 April 1975] 16601/76 Divided out of 1436080 Heading C2C Novel compounds of the formula I wherein R is alkyl, aryl, aralkyl or is absent, and in this last case the nitrogen atom in the 2- position is not quaternized, R 1  is H, alkyl, aryl or aralkyl, R 2  is H or acyl and X is halogen or acyloxy or is absent, with the proviso that R and X cannot be absent when R 2  is hydrogen, may be prepared by subjecting 9-hydroxy ellipticine (I R 2 =H, R 1 =H, R 8 X absent) to at least one of the following steps: (a) acylation of the 9-OH group (b) substitution of the 6- nitrogen with alkyl, aryl or aralkyl in the presence of a strong base, if necessary with temporary projection of the 9-OH group, and (c) quaternization of the 2-nitrogen, if necessary with temporary protection of the 9-OH group. 9 - Hydroxyellipticine is prepared by demethylation of the 9-methoxy compound. Pharmaceutical compositions of compounds I with the usual excipients may be administered orally or parenterally in the treatment of leukaemia.
Patent GB-152080-A (GB)
Title: Improvements in or relating to the manufacture of railway axles and the like
IPC: B21H1/18
Filed: 1919-07-02
Abstract: 152,080. Vickers, Ltd., and Robinson, S. July 2,1919. Axial rolling; skew-rolling.- Rolls for making railway axles, shafts, or like articles have loose collars A<5> and sliding collars A<4>, the latter being arranged to move out against counterweights a<10> during the rolling operation so as to form reduced parts on the finished axle, as shown in Fig. 12. Two lower rolls A<2> in parallel fixed bearings are provided and one upper roll A<1> pressed down by screw gearing driven by an electromotor d<2>; this roll A' may be arranged at an angle with the lower rolls, to remove scale from the billet. A hydraulic cylinder a<7> is provided for adjusting the left-hand housing A or the supporting frame a<6> for the lower rolls; the upper frame a<4> is adjusted by hand. Supporting brackets c<2> are provided for the coupling shaft c<1> driven from the motor B. Hydraulically-actuated ejector bars (not shown) are provided.
Patent GB-711805-A (GB)
Title: Improvements in and relating to electro-chemical apparatus employing transient electric arc discharges
Inventor: EDIGER WLADIMIR VON
IPC: B01J19/08
Filed: 1951-07-13
Abstract: Acetylene-containing gases are obtained from an electro-chemical apparatus for treating electro-conductive particles especially carbon granules in gas or in liquid hydrocarbons which comprises a closed chamber 1 in which is mounted a hollow structure, e.g. a cylinder 2 incorporating rigid electrodes 5 so that on movement of the structure, e.g. on rotation of the cylinder, loose conductive particles in the structure traverse the electrodes 5, which support the particles and bridge them electrically, generating arc discharges between the particles and through the gas or liquid.  The cylinder 2 rotates on a horizontal axis having end shafts 3 extending through side walls of the chamber 1.  The metal end-plates 4 of the cylinder have an internal insulating surface and flanges to carry the electrodes 5 comprising carbon or graphite rods of rectangular section.  Alternate electrodes 5 are connected at one end by metal brackets to one end-plate 4, and the intervening electrodes are connected to the opposite end-plate 4.  The other end of each electrode is insulated from the other end-plate, e.g. by an insulating bracket.  Current is supplied to the end-plates 4, e.g. through brushes.  The cylindrical grille of electrodes may be strengthened by an external cylinder of ceramic or synthetic resin, which is apertured or slotted to allow worn granules to drop through into a pit 20.  The electrodes may be fixed in internal longitudinal <PICT:0711805/IV (b)/1> <PICT:0711805/IV (b)/2> grooves in the external cylinder, metal lines in the grooves being connected in turn to opposite end-plates 4.  The cylinder may be driven by a pulley 13, may be diametrically divided into halves fitting together and may have an internal insulating disc supporting the electrodes and having a hollow boss to receive a spindle.  Fresh carbon granules from a hopper with a valve 23 are added to the cylinder through a hollow apertured spindle.  The granules are spread evenly in the cylinder by longitudinal rods 24 on wires 27 held by spacers 28.  The rods hang freely or are reciprocated through the granules, which comprise carbon spheres or discs cut from a rod and cover a sector of 90 degrees of the cylinder.  At least the lower part of the cylinder is immersed in oil or other liquid supplied at 17 and preferably circulated through an overflow 18, the gas produced passing to an outlet 19. Alternatively a gas to be treated is introduced at 17 and after separation from the products removed at 19, is recirculated. Separate phases of polyphase current may be fed to contact rings mounted on insulation on the cylinder shaft and connected sequentially to the electrodes.  The cylinder may be circular, rectangular or polygonal in cross-section.  The apparatus may have oil circulating means and a filter for carbon black as in Specification 661,105 which is referred to.
Patent GB-1148323-A (GB)
Title: Stabilised formaldehyde solutions
Inventor: BONIN WULF VON
IPC: C08F283/06
Filed: 1966-04-15
Abstract: 1,148,323. Stabilized formaldehyde solutions. FARBENFABRIKEN BAYER A.G. 15 April, 1966 [15 April, 1965], No. 16649/66. Heading C2C. [Also in Division C3] A stabilized aqueous formaldehyde solution is produced by adding, as a stabilizer, a graft polymer of a carboxylic ester of vinyl alcohol grafted on to a polyalkylene oxide or the product obtained by acid or alkaline hydrolysis of such a graft polymer to the formaldehyde solution in an amount of from 0À0001% to 1% by weight, based on the weight of the total solution, and heating the resulting composition to a temperature of from 60‹ to 120‹ C. for a period of from 3 to 20 hrs. The preferred graft polymers are obtained by conventional radical polymerization of esters of vinyl alcohol with carboxylic acids in the presence of polyethylene oxides, e.g. polyethylene oxides with molecular weights above 500. The hydrolysis of such graft polymers may be effected, optionally in the presence of additional solvents, using organic or inorganic acids such as phosphoric, sulphuric or hydrochloric acids, or using bases such as ammonia, amines or alkali or alkaline earth metal hydroxides to give products which can be used directly as stabilizers.
Patent GB-421157-A (GB)
Title: Improved production of tubular artificial textile threads
IPC: D01D5/24
Filed: 1934-06-05
Abstract: Artificial silk having tubular fibres is obtained by extruding viscose containing a substance capable of liberating a gas in the coagulating bath, giving the thread a travel of less than 25 centimetres in the bath and a travel of at least 150 centimetres in the air.  The thread may be subjected to stretching on leaving the bath before being wound.  The coagulating bath may comprise sulphuric acid and sodium sulphate in the concentrations and proportions indicated in Specification 255,527, [Class 2 (ii)]. The process leads to the production of tubular filaments substantially free from transverse striations when viewed microscopically.  In an example, viscose containing sodium carbonate is ripened for three days and then spun in a bath containing sulphuric acid, sodium sulphate, and zinc sulphate. The filaments travel 22 centimetres in the bath and 160 centimetres in the air before being wound.  Specifications 143,253, 189,639, 189,973, 214,197, 267,187, 289,796, and 299,710, [all in Class 2 (ii)], also are referred to.
Patent GB-1027570-A (GB)
Title: Improvements relating to the dyeing of polyamide material with reactive dyestuffs and the resulting fast dyed material
IPC: C09B62/00
Filed: 1964-04-23
Abstract: Natural and synthetic polyamide materials e.g. silk, wool and nylon are dyed with dyes which have a fibre reactive group and a cationic group when in aqueous solution, the dyeing is carried out at a pH of 5-11, followed by a treatment at a pH of 2-5 in a solution of an organic acid which may be added to the dyebath or may be contained in a fresh bath.  Preferably wool is dyed at a pH of 5-8 and the finishing treatment preferably at a pH of 3-4.5 in a bath containing formic or acetic acid.  Many dyes having the above reactive and cationic groups under the conditions of dyeing are specified.
Patent GB-1073057-A (GB)
Title: Machine for deflashing and similar trimming of workpieces
IPC: B29C45/00
Filed: 1965-04-21
Abstract: 1,073,057. Removing fins and flashings. WHEELABRATOR CORPORATION. April 21, 1965 [May 12, 1964], No. 16796/65. Heading B3D. A machine for the definning and deflashing of workpieces comprises a housing; means for supporting workpieces within said housing and continuously tumbling the workpieces to expose different surfaces; means for projecting a stream of particulate material on to said workpieces in said housing; means for projecting streams of cold gas into said housing into engagement with said workpieces for reducing the temperature of the workpieces to cause embrittlement of the thin fins and flashings whereby the embrittled fins and flashings are easily removed responsive to engagement by the particulate material, said means including an inlet plenum chamber extending crosswise of the housing and having outlet o penings for issuance of the streams of cold gas therefrom and in the direction towards said workpieces, a baffle plate within said housing positioned in the path of the streams of cold gas beyond said workpieces to prevent channelling of the cold gas streams so as more uniformly to engage said workpieces and a dust collector having an inlet communicating with the housing for the removal of spent cold gas and entrained particles from said housing for the separation thereof, said inlet being positioned in said housing beyond the baffle plate whereby the baffle plate lies in the path of the travel of the cold gas through said housing. Workpieces 10 moulded or otherwise fabricated of rubbers or other elastomers, plastics, metals &c. are tumbled in a trough 19 formed by an endless conveyer 12; refrigerated gas, preferably air, is projected on to the workpieces to embrittle their fins, burrs and flashings which are removed by a blast of particles, e.g. steel shot. The conveyer 12 is in a housing 25 which is in an enclosure 78. Spent abrasive and the removed fin and flash pass through the conveyer on to a surface 33 and thence to an elevator 36 delivering the mixture to a separator 38 comprising a rotary screen 40 and/or an air wash separator. Waste is discharged and reusable blastant is fed by gravity into a hopper 42 which supplies, through valve 32, a blasting device 26, e.g. a throwing wheel. The valve 32 is sealed from the surrounding atmosphere. More than one blasting device may be used. Air, cooled by heat exchange with refrigerant liquid, passes through passage 60 to a distributer 62 having nozzles angled to direct air streams angularly downwardly on to the conveyer. A baffle 66 is provided to ensure uniform distribution of the air for flow through the mass of workpieces on the conveyer. -The air passes through outlets 70 and together with air from the separator 38 goes to a dust collector 74. Air from the collector 74 returns to the heat exchanger, some being bled through pipe 80 into the enclosure 78 to replace air taken from the enclosure.
Patent GB-1454401-A (GB)
Title: Battery plate grids for lead-acid batteries
IPC: C22C11/02
Filed: 1973-04-07
Abstract: 1454401 Casting battery grids LUCAS BATTERIES Ltd 18 March 1974 [7 April 1973] 16809/73 Heading B3F [Also in Division C7] Battery grids are cast in a water-cooled mould provided with a lining of cork and having its grid-defining face maintained at a temperature between 150‹ and 250‹ C. The lead alloy contains small amounts of Al, Ca and Li and may be cast in air at 550‹ C.
Patent GB-1176948-A (GB)
Title: Improvements in Extrusion Presses
IPC: B21C23/21
Filed: 1967-04-12
Abstract: 1,176,948. Extruding. LINDEMANN MASCHINENFABBIK G.m.b.H. 12 April, 1967 [13 May, 1966], No. 16850/67. Heading B3P. The plunger 14 of an extrusion press is attached to and secured in a U-shaped slot 10 in a holder 11 by two thrust members 18 acting on a thrust ring 13 along axes which are inclined at equal angles to the axis of the plunger. The thrust members 18 may be inclined screws but are preferably hydraulic pistons supplied through a duct having a non- return valve and accumulator. Thrust ring 13 has an eye bolt (15), Fig. 2 (not shown), to facilitate handling, and the front of the plunger 14 may have a screw thread (26), Fig. 7 (not shown), to receive an eye bolt (27). The plunger and the billet container (35) may be removed together by lifting tackle (32) after sliding the container over the plunger and fitting a locking pin (28) through the eye bolt.
Patent GB-411681-A (GB)
Title: Improvements in devices for automatically regulating electric currents by means of grid-controlled discharge tubes
IPC: H02M7/15
Filed: 1933-06-14
Abstract: 411,681. Charging batteries; automatic regulation ; converting. JENAER GLASWERK SCHOTT & GEN., Otto-Schott- Strasse, Jena, Germany. June 14, 1933, No. 16948. Convention date, June 14, 1932. [Classes 38 (ii) and 38 (iv).] The output of a grid controlled electric discharge tube such as a rectifier employed in charging a battery is made dependent upon one or more electric magnitudes by causing the magnitudes to saturate variably the core of a transformer supplying the grid voltage. The invention may be applied to the control of the direct or alternating voltage supplied by a generator excited through gas discharge tubes, compounding being obtained by an additional winding supplied by the output current and opposing the effect of the saturating winding. Rectifiers are included in the circuits supplying the additional grid-transformer windings when required. The Figure shows a grid-transformer, one primary circuit of which is fed from the anode leads through a choking coil o to produce a 90‹ lead of the anode voltages over the grid voltages and the secondary windings are connected to a negative bias tapping on a resistance m connected in shunt to the battery i being charged so that the normal output voltage of the rectifier may be adjusted. Saturating windings l<1>, l<2> are connected in series with the resistance m and effect a cut-off of the charging current when the battery becomes fully charged by reducing progressively the amplitude of the A.C. component of grid voltage until it fails to exceed the negative bias voltage.