baber/WOPTO huggingface dataset:
Patent GB-354032-A (GB)
Title: Improvements in or relating to carrier wave television systems
IPC: H04N5/44
Filed: 1930-07-11
Abstract: 354,032. Television. GRAMOPHONE CO., Ltd., Hayes, and BROWN, W. J., Danesmoor, Harefield Road, Uxbridge, both in Middlesex. July 11, 1930, No. 21108. [Class 40 (v).] A super-regenerative wireless receiver is used as a television receiver to control the light. from a source D. The frequency of oscillation of the quenching circuit B is synchronized with, or slightly different from, the picture scanning frequency. The quenching action prevents the persistence of signals which tends to occur in short-wave receivers.
Patent GB-1305414-A (GB)
IPC: B22D11/115
Filed: 1970-05-01
Abstract: 1305414 Continuous casting AEG-ELOTHERM GmbH 1 May 1970 [12 Dec 1969] 21145/70 Heading B3F To avoid the formation of radial dendrite crystals and axial accumulation of impurities, movement is caused in the molten core 6 in the shell 17 of a continuously cast slab or plate 5, by a travelling magnetic field, generated by at least one linear-travelling-field inductor 9 disposed so that the direction 13 of propagation of the field is parallel to the wider side faces of the casting. Inductors 9 are mounted in a supporting frame 1 of an apron of supporting and withdrawing rollers 3. To increase the agitation of the core 6, the polarity of the inductor may be continually changed and/or the inductor may be alternately turned on and off or the inductor voltage may be continuously or abruptly varied.
Patent GB-1255756-A (GB)
Title: Magnetic holding attachment with relays
IPC: H01H51/10
Filed: 1970-05-01
Abstract: 1,255,756. Magnetically held contactors. SQUARE D CO. 1 May, 1970 [5 May, 1969], No. 21153/70. Heading H1N. An electromagnetic contactor such as that described in Specifications 1,231,922 and 1,231,923 has, mounted between the contactor and a mounting panel, a magnetic holding device which includes a permanent magnet assembly which moves relative to a co-operating magnetic assembly when the contactor is operated and is arranged to retain the contactor in its operated position until the permanent magnet flux is opposed on energization of a release coil. The holding device has a housing 20 in which the permanent magnet assembly 25 is slidable toward and away from the co-operating magnetic assembly which has polepieces 43 and a release coil 40. The assembly 25 has polepieces 26, 27 on opposite sides of a permanent magnet 28 and an extension 27a of the polepiece 27 carries a pin 32 which is clamped by a screw 39 in a hole 38 in a coupling member 34 having an extension 35 loosely fitting into a member 11 in the armature 6 of the contactor. The hole 38 is offset from the axis of the extension 35 so that when the srew 39 is loosened the member 34 can be rotated to adjust the relative positions of the armature 6 and permanent magnet assembly 25. The loose fitting of the extention 35 in the member 11 allows the armature 6 to move a small distance from the yoke 4 when the coil 3 is de-energized without resetting the contacts.
Patent GB-1364357-A (GB)
Title: Process for producing methanol in tubular heaters
IPC: C07C29/154
Filed: 1972-05-05
Abstract: 1364357 Preparation of CH 3 OH in a tubular reactor METALLGESELLSCHAFT AG 5 May 1972 [14 May 1971] 21186/72 Heading C2C Methanol is obtained by passing hydrogen and oxides of carbon at 230-280 C. under a pressure of 10-200 Kg./cm.<SP>2</SP> above atmospheric pressure over a particulate Cu-containing catalyst contained in a metallic tube or tubes, which is or are contacted on the outside by a cooling fluid (e.g. boiling H 2 O under pressure), the mass velocity m of the synthesis gas (e.g. fresh gas plus recycle gas) entering the catalyst tube or tubes, in Kg./square metre/second, the height L of the catalyst bed in metres and the inside diameter D of the tube(s) in millimetres being defined by the equations wherein p is the density of the gas in Kg./m.<SP>3</SP>, d is the catalyst particle diameter in mm. and the empirical factors have the values: The catalyst particles are preferably spherical or cylindrical with a diameter > 3 mm. (e.g. 5-12 mm.) and include annular particles with an outer diameter of 10-20 mm. and a wall thickness of 3-6 mm. and the particles preferably have a bulk density > 1Kg./litre (e.g. 1À5-2 Kg./l.). Examples 3 and 4 describe the production of methanol using reactors containing (a) 184 tubes (L = 6m., D = 34mm.) packed with catalyst particles of diameter 5 mm. and (b) 1 tube (L = 16m., D = 100 mm.) packed with catalyst particles of diameter 12 mm. respectively.
Patent GB-719390-A (GB)
Title: Improvements in or relating to hydraulic presses
IPC: B30B15/16
Filed: 1951-09-10
Abstract: 719,390. Hydraulic presses. QUALCRAFT GENERAL ENGINEERING PRODUCTS, Ltd., CHURCHOUSE, E. E., and WILLIAMS, E. B. Aug. 14, 1952 [Sept. 10, 1951], No. 21267/51. Class 69 (2) A hydraulic press with a fixed-platen 10 has the movable platen 11 adjustable relative to the piston by a screw 18 operated by a hand wheel 21. To enable adjustment to be made during an approach stroke a valve 25 is provided, furnished with a finger control 47. Adjustment of the valve is possible to maintain fluid pressure under the. piston but to restrict the rate of supply. Specification 719,389 is referred to.
Patent GB-144743-A (GB)
Title: Improvements in or relating to systems for driving machinery subject to fluctuating loads
IPC: F16H61/44
Filed: 1918-12-19
Abstract: 144,743. Vickers, Ltd., Mackness, C. F., and Broughton, H. H. Dec. 19, 1918. Fluid-transmission apparatus. - In system for driving machinery subject to fluctuating loads such as winders, a prime mover such as an electric motor M or a Diesel engine is coupled to a fly-wheel F through a variable-speed gear A, B controlled according to the value of the load, so that when the load is less than a predetermined amount the fly-wheel is driven, whilst when the load exceeds the predetermined value the flywheel gives out its stored energy. The prime mover may drive the machine subject to fluctuating loads, e.g. winding drums D, through a variable-speed gear A<1>, B<1>, both speed gears being preferably hydraulic speed gears of the Williams-Janney type. When the prime mover is an electric motor, the tilting-box P of the pump end A of the gear A, B may be controlled by a torque motor J supplied with current from the secondary of a transformer T, the primary windings of which are connected in series with the loads L supplying the motor M, or by a solenoid. In modifications the control may be effected by a governor driven directly from the shaft of the prime mover by a governor driven by an electric motor supplied from a shunt wound generator coupled to the prime mover, or by an hydraulic ram actuated by the hydraulic pressure in the gear A<1>, B<1>. The tilting-box P<1> of the pump end of the gear A<1>, B<1> can be operated by hand or by the means described in Specification 144,742, [Class 69 (ii), Hydraulic presses &c.]. Specification 143,588, [Class 69 (ii), Hydraulic presses &c.], is also referred to.
Patent GB-1287541-A (GB)
Title: Improvements in fuel injection systems
IPC: F02M69/52
Filed: 1971-04-19
Abstract: 1287541 Distributing valves for I.C. engines ROBERT BOSCH GmbH 19 April 1971 [12 Feb 1970] 21389/71 Addition to 1231967 Heading FIB A fuel distributor as described in parent Specification has a diaphragm made of such material that variations in temperature do not affect the pressure head across the variable throttles. The diaphragm may be a nickel manganese alloy or a fabric diaphragm mounting a plate having a rubber or plastics coating.
Patent GB-186772-A (GB)
Title: Improvements in the manufacture of barrels for sporting guns and the like
IPC: B21C37/15
Filed: 1921-08-12
Abstract: 186,772. Rose, B. Aug. 12, 1921. Small-arms.-Barrels for sporting guns having thickened walls at the breech end, are formed by drawing down a uniform tube through a series of dies, either on a long tapered mandrel or on a graduated series of shorter tapered mandrels, to produce the form shown in Fig. 4, the blanks being annealed at each stage of the drawing operation. The internal taper b<2> is then converted into an external taper c<2>, and the bore c<1> rendered uniform, as shown in Fig. 6, by means of a reducing operation in a mechanical hammering or other reducing-machine, which may be a swaging or rolling machine.
Patent GB-1042697-A (GB)
Title: Brake for power driven hoists
IPC: E02F7/00
Filed: 1965-05-20
Abstract: 1,042,697. Winches. DUSTERLOH FABRIK FUR BERGWERKSBEDARF G.m.b.H. May 20, 1965 [June 12, 1964]. No. 21489/65. Heading B8B. [Also in Division F2] A powered chain-hoist driven from a gear motor 1, Fig. 1, through spur gearing 3, 7 and planetary gearing 4 has a brake 8 mounted within the hoist casing and acting on the external surface of a gear-wheel 7 having internal teeth. The output shaft 6 from the gear-wheel 7 drives the planetary gear 4. A control shaft 21 for actuating the reversing motor valve 16 is coupled to the brake release actuating shaft 12 through a lever system 13.
Patent GB-460583-A (GB)
Title: Improvements in lubricating oil
Filed: 1935-07-29
Abstract: Naphthene or paraffin base lubricating oils are improved as regards viscosity index and pour point by addition of a purified material comprising a reaction product of rubber with a compound selected from the group of amphoteric metal halides and halogen acids consisting of stannic chloride, stannic bromide, chlorostannous acid, chlorostannic acid, bromostannous acid, and bromostannic acid, from which undesirable darkening material has been removed.  Purification is effected by dissolving the crude product in an aromatic hydrocarbon, e.g. benzol, and precipitating the undesired darkening material by an anhydrous acid, e.g. glacial acetic or hydrochloric acid.  After separation of the precipitate, the desired material is precipitated by adding a ketone, e.g. acetone or methyl ethyl ketone, or an alcohol, and is separated, washed and dissolved in benzol to form a concentrated solution which is added to the oil and the benzol stripped off, leaving a concentrated oil solution.  An addition of \ba1/4\be--1\ba1/2\be per cent of the weight of oil improves the pour point of partially dewaxed paraffin or mixed base oil; \ba1/2\be--5 per cent improves the viscosity index; and 5--40 per cent may be added to produce a gear lubricant.  British Specification 285,071, [Class 70], and U.S.A. Specifications 1,797,188 and 1,853,334 are referred to.  The Specification as open to inspection under Sect. 91 describes also the use of the crude rubber reaction product.  This subject-matter does not appear in the Specification as accepted.ALSO:A reaction product of rubber with a compound selected from the group of amphoteric metal halides and halogen acids consisting of stannic chloride, stannic bromide, chlorostannous acid, chlorostannic acid, bromostannous acid, and bromostannic acid, is purified from undesirable darkening material by dissolving the crude product in an aromatic hydrocarbon, e.g. benzol, and precipitating the undesired darkening material by an anhydrous acid, e.g. glacial acetic or hydrochloric acid.  After separation of the precipitate, the desired material is precipitated by adding a ketone, e.g. acetone or methyl ethyl ketone, or an alcohol, and is separated, washed and dissolved in benzol to form a concentrated solution which is added to lubricating oil and the benzol stripped off, leaving a concentrated oil solution.  British Specification 285,071, [Class 70], and U.S.A. Specifications 1,797,188 and 1,853,334 are referred to.
Patent GB-715583-A (GB)
Title: Improvements relating to electric motor control systems for mine winders and the like
Inventor: DOLAN HARRY
IPC: H02P3/18
Filed: 1952-08-27
Abstract: 715,583. Control of A.C. motors. ENGLISH ELECTRIC CO., Ltd. Aug. 14, 1953 [Aug. 27, 1952], No. 21573/52. Class 38(3) [Also in Group XXXV] In a control system for a hoist driven by a wound rotor induction motor 10 the rectified output of a tachometer generator 15 and a reference voltage from a hoist-position-operated potentiometer 19 are applied differentially to the control windings 18a, 18b of magnetic amplifier energizing a torque motor 21 controlling a hydraulic rotor-resistanceactuator 25. Negative overspeed error signals of sufficient amplitude cause the torque motor to operate dynamic-braking-contacts EB1 applying D.C. to the stator from sources 12. 13. (Source 12 is a constant voltage D.C.; the voltage of source 13 varies with the speed of the motor). STARTING HOISTING Assuming the previous wind to have been in the reverse direction, start button SB energizes (i) contactor F over winder-operated limit-switches LSF, LSB and (ii) relay A which applies a small positive voltage from potentiometer 19 to magnetic amplifier control winding 18b; this causes a reduction in rotor resistance until the motor load current operates relay LC to release the mechanical brakes. As the motor speeds up contacts SS are opened to release relay A thereby connecting the slider of potentiometer 19 to the control winding 18b. and hoisting proceeds according to a set programme. DYNAMIC BRAKING. When the speed error becomes negative, contacts EB1, 2 are operated to energize the braking contactor B; de-energize the motor contactor F, (or R); and energize relay G to reverse the connections to the magnetic amplifier, so that rotor resistance control is in the correct sense for braking. LIMITING CIRCUITS. (i) [The emergency stop]. The emergency stop is initiated by a voltage sensitive relay 37 in series with a rectifier 38 across the control windings 18a. b. (ii) Acceleration (or deceleration) is limited by a solenoid 30 restricting the outlet of the hydraulic actuator 25. and energized through a magnetic amplifier 27 controlled by a differentiating network 28, 29 fed from the tachometer generator 15. (iii) Overload current relays CL and BCL responsive to motoring and braking currents energize a solenoid 33 to restrict the actuator outlet.
Patent GB-825561-A (GB)
Title: Phenothiazine derivatives and process for their preparation
IPC: C07D417/06
Filed: 1956-07-12
Abstract: The invention comprises phenthiazines of the formula <FORM:0825561/IV (b)/1> (wherein Z is hydrogen, halogen, or alkyl or alkoxy groups containing a maximum of eight carbon atoms, R1 and R11 are hydrogen or methyl, m is one or two, n is an integer from 2 to 6 inclusive and -CnH2nis alkylene such that at least two carbon atoms link the nitrogen atoms) co-ordination complexes such as the corresponding sulphoxides, sulphoxide-amine oxides, quaternary ammonium derivatives and acid addition salts of the free base or its coordination complexes, together with processes for their preparation by reacting 2-spiro-substituted pyrrolidyl-alkyl halides and 2-spirosubstituted pyrrolidines with 10-unsubstituted phenthiazines and 10-(o -halo-alkyl)-phenthiazines respectively in an inert medium in the presence of an alkaline condensing agent, e.g. alkali metal hydroxides, amides, hydrides or alkoxides, and preferably under nitrogen or other inert gas.  Specified acid addition salts are hydrochloride, hydrobromide, hydroiodide, sulphate, citrate, acetate, succinate, nitrate, and phosphate, and quaternary derivatives may be derived from methyl bromide and iodide, ethyl and benzyl chloride and allyl bromide.  The sulphoxide and sulphoxide-amine oxides are prepared by oxidation of the corresponding phenthiazine compounds with a peracid or hydrogen peroxide.  Specified starting materials include 1- and 3-fluoro-, 2-, 3- and 4-chloro-, 2-bromo-, 3-methoxy- and 4-methyl-phenthiazine, and 4-chloro-, 2-methyl-, 2-chloro-, and 4-iso-butyl-10-(b -chloroethyl)-phen-thiazine, 10-(b -chloroethyl)-, 3-ethoxy-10-(g -chloropropyl)- and 2-chloro-10-(b -chloropropyl)-phenthiazine.  In examples: (1) phenthiazine and sodamide are refluxed in toluene, treated with b -(spiro-[cyclohexane-1,21-pyrrolidyl-11])-pyrrolidyl - 11] - ethyl) - phenthiazine hydro-chloride hydrate, and subsequently the free base; (2) 2-chlorophenothiazine (Chemical Abstracts numbering) and sodamide are refluxed in toluene and then with g -(spiro-[cyclohexane-1,21 - pyrrolidyl - 11]) - propyl chloride, the mixture extracted with ether and extracts treated with dilute HCl giving 2-chloro-10-(g -spiro-[cyclohexane-1, 21-pyrrolidyl-11]-propyl)-phenthiazine hydrochloride, and subsequently the free base on treatment with NaOH. Other compounds similarly obtained are 10-(b -spiro[cyclohexane - 1,21 - pyrrolidyl - 11] - propyl) - phenthiazine, 10 - (b  - spiro - [cyclopentane - 1,21 - pyrrolidyl - 11] - ethyl) - phenthiazine hydrochloride, 3 - methoxy - 10 - (b  - spiro - [cyclohexane - 1,21 - pyrrolidyl - 11] - ethyl) - phenthiazine hydrochloride and 2-bromo-10-(g  - spiro - [cyclohexane - 1,21 - pyrrolidyl - 11] - propyl)-phenthiazine.  Specifications 716,206, 825,562 and 825,564 are referred to.
Patent GB-574232-A (GB)
Title: Improvements in process for obtaining aluminium hydroxides from silicates
IPC: C01F7/20
Filed: 1943-12-24
Abstract: 574,232. Electrolysis. ROGERS, F. R. (Antonoff, Gr.). Dec. 24, 1943, No. 21627. [Class 41] Aluminium hydroxide is obtained from the silicate or silicate-containing deposits, such as kaolin, by adding the latter in finely-divided. form to a mixture of hydrofluoric and sulphuric acids and electrolysing at a temperature approximating to 100‹C. and at five volts. The hydrofluoric acid breaks down the silicate and the resulting aluminium sulphate is broken down by electrolysis to form the hydroxide at the cathode. A " Pyrex " (Registered Trade Mark) vessel 5 in a metal container 6 containing heated water contains, per four litres of solution, about 30 c.c. of sulphuric acid and 100 grams of hydrofluoric acid, to which the silicate is gradually added to form a slurry of 7¢ per cent. concentration. The cell is heated by a steampipe grid 11 and the electrolyte agitated by a glass stirrer 10. The graphite, lead, or aluminium cathode is contained in a porous pot 8 filled with water, preferably distilled. Iron impurities are prevented from contaminating the aluminium hydroxide by a thin filter-cloth bag 13 in which the latter is collected. Silica is deposited at the graphite anode 9 in granular form. The chemical reactions are set out in the Specification. Specification 548,853 is referred to.
Patent GB-615759-A (GB)
Title: Thread-advancing device
IPC: B65H51/22
Filed: 1946-07-19
Abstract: 615,759. Thread - advancing devices. AMERICAN VISCOSE CORPORATION. July 19, 1946, No. 21632. Convention date, Nov. 3, 1945. [Class 120(ii)] Apparatus for handling continuous strands of filamentary material comprises a thread storage, thread-advancing reel &c. which may be of the general kind set forth in Specifications 584,950, 587,949, 587,976 and a rotatable member 25 adjacent the discharge end of the reel &c., said member being separate from the strand-carrying elements of the reel &c. and having a periphery for receiving the strand and for winding it thereabout, and being driven at a peripheral speed approximately equal to that of the reel &c. and in a contrary or in the same direction, whereby the yarn strip extending between the reel 2, 3 &c. and the member 25 may easily be picked up by the operative. The member 25 is driven about a stationary shaft 4 from the reel through clutch surfaces 5a, 14 and gear train 11, 16, 17, 18, the clutch being urged into engagement by a spring 24, but may be disengaged and held inoperative by a pivoted lever 32 and catch 36, 37. A stationary hood 31 protects the parts therein. In a modification, as applied to a reel construction similar to that of Figs. 5 and 6 of Specification 587,949, the drive from the clutch surfaces to the member 25 is through a bevel gear train.
Patent GB-209374-A (GB)
Title: Improvements in line drawing instruments
IPC: B43K17/00
Filed: 1923-08-27
Abstract: 209,374. Venning, G. V., and Counsell, E. P. Aug. 27, 1923. Ruling devices.-in an instrument in which a holder for a brush or pen is pivoted to a support the. lower end of which is drawn along the paper in contact with the edge of a ruler &c., the support consists of a spring strip E formed with a loop at its lower end and secured to the lower end of an arm C so that by varying the pressure applied by the hand to the, instrument the spring is more or less flexed and the thickness of the line drawn is thereby adjusted. The arm C is formed with a projection D adapted to abut against the handle of the brush &c. in the closed or operative position of the instrument. The holder L is made pear-shape in plan so as firmly to hold handles of widely varying diameters.
Patent GB-921337-A (GB)
Title: Improvements in or relating to plain or barbed wire defense coils
IPC: F41H11/08
Filed: 1961-06-15
Abstract: 921,337. Military entanglements. G. SIEFFERT. June 15, 1961 [June 17, 1960], No. 21671/61. Class 20 (1). [Also in Groups I and XXII] A coil of plain or barbed wire comprises coaxial inner and outer networks 2, 1, each consisting of one or a plurality of wires wound as a helix, the inner network having a smaller number of turns per unit length than the outer and means, e.g. wires 3, for attaching the inner to the outer network. In another embodiment some of the coils of the inner network are elongated outwardly so as to be substantially tangential to the outer network at certain points of its periphery at which points it is stapled to the outer network. In addition successive turns of both the inner and outer networks may be stapled together at points which constitute the vertices of a regular pentagon. In a further embodiment the inner network has every third turn of the coil closed on itself by stapling to form a free turn which is elongated in order to be tangential at two diametrically opposite points to the outer network at which points it is stapled to the latter.
Patent GB-643082-A (GB)
Title: Improvements in or relating to butt hinges
IPC: E05D5/04
Filed: 1947-08-08
Abstract: 643,082. Hinges. THOMAS, W. G. Aug. 8, 1947, No. 21803. [Class 65(ii)] [Also in Group XXII] A hinge is made from a blank 13, having two generally parallel edges 13a and 14a, by cutting from the blank a piece 14 with a base on one of the said edges, with sides inwardly sloped over at least part of their length and with an upper edge having one or more tooth-like serrations, and by curling over the rearmost regions of the piece and the remainder of the blank. Screw holes 15 are provided. In hanging a door, a hinge barrel is slid along the edge of the frame to scribe a line thereon. The hinge or hinges are secured to the door, which is then moved into a position such that the serrations contact the said scribed line. The flaps are then struck to cause the serrations to enter the frame. Specification 531,347, [Group II], is referred to.
Patent GB-382940-A (GB)
Title: Improved process for making 2-chlorarylthiazoles
IPC: C07D277/68
Filed: 1931-07-30
Abstract: 2-Chlorarylthiazoles are prepared by reacting 2-mercaptoarylthiazoles with sulphur monochloride in the absence of solvents and at a temperature near the boiling-point of the mixture.  The high temperature is necessary in order to avoid the formation of an arylthiazole-2,2<2>-disulphide according to Specification 277,338, [Class 2 (iii), Dyes &c.].  In an example the preparation and isolation of 2-chlorbenzthiazole is described and the production of 2-chlorarylthiazoles substituted in the nucleus by methyl, nitro and chloro radicles is mentioned.