baber/WOPTO huggingface dataset:
Patent GB-676049-A (GB)
Title: Improvements relating to the speed-indication or control of direct current electric motors
IPC: B60L3/12
Filed: 1950-06-14
Abstract: 676,049. Control of motors. BRITISH THOMSON-HOUSTON CO., Ltd. June 14, 1950. [June 14, 1949] No. 14869/50. Class 38, (iii). Means for indicating or restricting the speed of an electric motor, in the event of wheelslip, for example, when the motor is used for traction, comprises a relay having a magnetic core 9 excited by opposing windings 10 and 12. The winding 10 is energized in accordance with the voltage across the armature 1 of the motor and has an adjustable resistor 11 connected in series with it. The winding 12 is connected in series with the motor field winding 8 and together with this winding in parallel to resistor 5, or is connected across a resistor which is in series with winding 8 and, with it, across resistor 5. A pivoted, spring- biased, armature 13 is formed as a permanent magnet or is polarized by a coil fed from a constant source, and, when the motor speed is below a pre-determined value, the armature occupies the position shown. When the motor speed exceeds the set value the polarity of the core 9 is reversed and the armature is moved to open contacts 15, 16, and close contacts 15, 17, so energizing means for indicating or remedying the condition. The relay may have a third winding supplied through contacts 15, 17, to hold the relay in its released condition until re-set by de-energizing the holding coil. In a modified form the relay is of the balance type, the coils 10 and 12 co-operating with cores fixed to the ends of a lever which is pivoted at its centre, Fig. 3 (not shown). In a further modification the relay-coils are mounted co-axially, Fig. 4 (not shown). If the motor has no winding compensating for armature reaction, a compensating coil may be provided on the relay. This additional coil is energized in accordance with the motor armature current and opposes the relay-coil energized in accordance with the motor field current. When the system has several motors, a relay is provided for each motor, and the several relays may have parts in common. If the motor is of the compound type the relay may have in addition, a coil energized in accordance with the shunt field current.
Patent GB-182099-A (GB)
Title: Improvements relating to steam turbine-driven locomotives
IPC: B61C5/00
Filed: 1922-05-26
Abstract: 182,099. Boltshauser, H. June 18, 1921, [Convention date]. Railway locomotives, turbine.-Turbine-driven locomotives are fitted with a surface condenser in two parts 9, 10 arranged symmetrically at each side of the boiler 19 and both connected with the ahead and astern turbines which may be enclosed in a single casing 1 or in separate casings. Cooling water is circulated through the branch pipes 14, 15.
Patent GB-492068-A (GB)
Title: Improvements relating to incandescent lamp holders
IPC: H01R33/02
Filed: 1937-05-29
Abstract: A holder for a tubular lamp comprises a base to be fixed flat to a wall &c. and a cover fitting over and enclosing the base. The cover is moulded from urea-formaldehyde material and is domed both longitudinally and transversely to allow contraction due to the heat of the lamp without undue distortion.
Patent GB-688292-A (GB)
Title: Improvements in or relating to means for winding tapes, metal ribbons, wires and thelike on to cores
Inventor: MAERTELAERE JEAN DE
IPC: B21F17/00
Filed: 1950-06-15
Abstract: 688,292. Coiling. LIGNES TELEGRAPHIQUES ET TELEPHONIQUES. June 15, 1950, No. 15011/50. Class 83 (iv). [Also in Groups XXV and XXVIII] A head for winding at constant tension a metal tape, wire, &c. on to a cable, tube, &c. comprises a detector arm arranged to determine the diameter of the reel of tape, a strap brake adapted to transmit to the reel the necessary braking torque, and a spring adapted to maintain a constant tension in the brake strap irrespective of variations in the diameter of the tape reel, the said constancy of tension being obtained by variations in the length of the spring effected by the detector arm. In the form shown, the core 22 is fed through a central body 1 rotated in bearings 2 and 3 through a pinion 4. Axles 5 are mounted on the body 1 and carry respectively a reel of tape 6 clamped between discs 7 held between a brake drum 8 and a central core 9 by a nut 10. An arm 12 pivotal about a spindle 14 carries at its free end a roller 13 adapted to bear upon the surface of the tape 6. A brake band 17 fixed so as to swivel at one end on a fixed pin 18 extends around the brake drum 8 and is secured at its free end to a lever 15 connected to the boss of the arm 12 through a spring 19. The roller 13 extends between the flanges as the tape is unwound and as the length of the spring 19 decreases, the tension on the brake strap 17 decreases in the same ratio. The braking torque is proportional to the radius of the reel of tape, thus ensuring a constant tension for the tape. The tape which is being unwound passes over rollers 20 and 21 to meet the core 22 at the desired angle.
Patent GB-625261-A (GB)
Title: Improvements in means for the remote positional control of apparatus
IPC: G05D3/12
Filed: 1947-06-12
Abstract: 625,261. Fluid-pressure servomotor-control systems. ELECTRICAL STEAM & MINING EQUIPMENT (LONDON), Ltd., and COULING, C. W. June 12, 1947, No. 15039/46. [Class 135] A positional control system comprises a synchronous link electrical receiving unit 1, Fig. 1, coupled to a rotatable shaft geared to an input shaft 14 of a differential gear, the other input shaft 17 being connected to the controlled element, and the differential gear consists of a sun-wheel 14 or 31, Fig. 3, on each input shaft and, at least, two pairs of planetwheels 27 supported on a carrier with the wheels of each pair meshing with each other and one wheel of a pair meshing with one sun-wheel while the other wheel of the pair meshes with the other sun-wheel; and the planet carrier 30 is provided with a cam, the rotation of which actuates a valve mechanism 47 controlling the supply of fluid to the ram moving the controlled element. The invention may be applied to the control of a flue damper, furnace door, valves for fluid lines, fan vanes, rheostats, induction regulators, &c. The valve device 47 may be similar to that described in Specification 445,382 and is actuated from a lever 46 which has a universal joint with a pivoted yoke, the latter being spring-pressed against the cam on the planet carrier of the differential.
Patent GB-148675-A (GB)
Title: Automatic fire alarm
IPC: G01N5/02
Filed: 1919-06-17
Abstract: 148,675. Deacon, J., Shilson, G. A. R., and Feldtman, E. V. June 17, 1919. Smoke-pipe alarm systems.-The smoke of a fire is drawn through a horn a by a fan b and forced through a tube d into a solution of silver nitrate f; the resulting increase of weight causes a spring balance g to operate a lever whereby an electric circuit is closed at k, k<1>, k<2>, k<3> to ring one or more bells l.
Patent GB-927774-A (GB)
Title: Process for dyeing and printing cellulose materials in shades fast to wetness
IPC: D06P1/30
Filed: 1960-04-29
Abstract: Dyeings or prints of good wet-fastness properties on shaped structures, such as fibres or foils, of natural or regenerated cellulose are obtained by applying a water-soluble dyestuff (except a sulphur dyestuff) containing one or more thiosulphuric acid groups, and also applying before, during or after dyeing or printing an alkali or an alkaline reducing agent such as sodium carbonate, trisodium phosphate, sodium sulphide or sodium cyanide. The dyeings or prints are preferably finally steamed.  The dyestuffs, which may contain additional solubilizing groups, such as sulphonic or carboxylic acid groups, may belong to the azo, anthraquinone, acridone, phenazine, dioxazine, diphenyl-methane, triphenylmethane, nitro or phthalocyanine series, and the thiosulphuric acid groups may be joined directly or through an aliphatic or aromatic radical bridge to the nucleus of the dyestuff.  The dyestuffs employed in the examples are (1), and (2), those of the formulae <FORM:0927774/IV(a)/1> <FORM:0927774/IV(a)/2> (3), that obtained by coupling 3 mols. of diazo-tized 3-aminobenzyl-thiosulphuric acid, or (9), 3 mols. of diazotized 3-aminobenzene-sulphonyl-(methyl-amino)-b -ethyl-thiosulphuric acid with the reaction product of 1 mol. of nickel-phthalocyanine-trisulphochloride with 3 mols. of 1-(41-aminophenyl)-3-methyl-pyrazolone-(5); (4), that of the formula <FORM:0927774/IV(a)/3> (5), that obtained by coupling 1 mol. of copper phthalocyanine-trisulphochloride with 3 mols. or (6), 4 mols. of 2-aminoethyl-thiosulphuric acid; (7), and (8), those of the formulae <FORM:0927774/IV(a)/4> <FORM:0927774/IV(a)/5> (10), 3-aminobenzene-sulphonyl-(methylamino)-b - ethyl-thiosulphuric acid --> 3-(21,31-hydroxy-naphthoylamino)-4-methoxy-benzyl -thiosulphuric acid; (12), and (13), those of the formulae <FORM:0927774/IV(a)/6> <FORM:0927774/IV(a)/7> (14), aniline-3:5-disulphonic acid --> 1-phenyl-3-methyl-5-pyrazolone-41-sulphuric aicd conver-ting into the trisulphochloride and condensing with methylamino-b -ethyl-thiosulphuric acid; (15), that obtained by coupling 2 mols. of diazot-ized 3-aminobenzene-sulphonyl-(methylamino)-b -ethylthiosulphuric acid with 1 mol. of 2:5-bis-(acetoacetylamino)-toluene; and (16), that obtained by condensing 1 mol. of 1:4-diami-noanthraquinone-bis-(4-tolyl-5-sulphochloride) with 2 mols. of b -amino-ethyl-thiosulphuric acid.  Specification 787,878 is referred to.
Patent GB-405858-A (GB)
Title: Improvements in or relating to the production of transfer layers on manifolding sheets, forms and the like
IPC: B41M5/10
Filed: 1933-05-26
Abstract: 405,858. Carbon-paper coating-compositions. RINCO AKT.-GES., 1308, Florastrasse, Zofingen, Switzerland. May 26, 1933, No. 15275. Convention date, May 31, 1932. [Class 146 (iii).] In carbon-paper &c. coating-compositions comprising a basic colour layer and a protective layer, the colour layer is devoid or substantially devoid of oils, fatty materials, waxes, &c. The following examples are supplied : (1) casein, turkey red oil, glycerine, water, lamp-black, and Milori blue ; (2) glycerine pitch, benzine, lampblack, and Milori blue ; (3) collodion wool, diethyl ester of phthalic acid, boiled castor oil, toluol, ethyl glycol, lamp-black, Milori blue, and alcohol ; (4) soap, Milori blue, lamp-black, glycerine, and water. The protective coat may comprise : (1) water, glycol stearate, and titanium white ; or (2) water, beeswax, and ammonium salt of ricinol sulphonic acid.
Patent GB-552182-A (GB)
Title: Improvements in and relating to tool holders for metal cutting machines
IPC: B23B29/14
Filed: 1941-11-27
Abstract: 552,182. Tool holders. MASON & SONS, Ltd., E. N., and MERCER, A. A. Nov. 27, 1941, No. 15277. [Class 83 (iii)] A tool-holding assembly for lathes, planers, shapers &c. comprises a tool-holder 12, Fig. 1, pivotally mounted on a body 1 and connected thereto by a spring 23 so that the tool can yield if it engages the work with excessive pressure. The body is bored at 2, Fig. 2, to receive the pivot pin of the tool-holder 12. The end of the tool-holder is recessed at 18, the lower face 19 of the recess being convex. An adjustable block 21 mounted in the recess has a convex lower face and one end of a laminated spring 23 is clamped between the convex faces by bolts 24, Fig. 1. The other end of the spring is clamped in a corresponding recess in the body, packing being inserted as required at 26, Fig. 1, and clamping effected by screws 25. A retaining plate 27 may also be provided. The degree of resilience may be varied by changing the number of spring laminations and the height of the tool may be adjusted by placing the packing 26 above or below the springs. The front of the tool-holder has a tool-receiving slot 29, Fig. 6, coacting with a slot 32 in a clamping plate 31 to secure the tool 30. A keeper plate 35 maintans the front of the tool-holder in contact with the body but allows the yielding movement of the tool-holder. In a modification, Fig. 9, the tool-clamping plate is recessed on one side 44 and ribbed on the other 45, so that by reversing the plate tools of different thicknesses may be clamped. The clamping plate may also be modified according to the section of the tool.
Patent GB-139978-A (GB)
Title: Improvements in the lubrication of internal combustion engines
IPC: F01M9/06
Filed: 1919-06-18
Abstract: 139,978. Castle, T. R. June 18, 1919.. Lubricant conveyed by mechanical means. - To lubricate the cylinder and piston of an internal-combustion engine, particularly one of the cylinders of an engine of the V-type which would otherwise be insufficiently lubricated, a rotating, roller 8 formed with teeth or like parts is mounted in a channel 6 so placed that oil, which is delivered to the channel by a pipe 13, is splashed into the cylinder. The roller is rotated by gearing either inside or outside the crank casing.
Patent GB-347503-A (GB)
Title: Antenna arrangement for short and ultra-short waves
IPC: H01Q7/00
Filed: 1930-05-19
Abstract: 347,503. Directive wireless signalling. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. May 19, 1930, No. 15310. Convention date, Oct. 30, 1929. Drawings to Specification. [Class 40 (v).] To ensure directional reception of wavelengths of from 5 to 25 metres a frame aerial is used having a diameter not more than one-tenth the signal wavelength and located at a height at least onehalf the wavelength above the ground. The feed lines between the elevated frame and the input transformer to the receiver may consist of a conductor inside a hollow conducting tube, or of two wires inside a metallic screening tube. The midpoint of the primary winding of the supply transformer is earthed ; if capacity coupling is used, the supply leads are shunted by two condensers in series, with a central lead to earth.
Patent GB-857257-A (GB)
Title: Process for producing di-methylcyclopentadiene
IPC: C07C13/61
Filed: 1959-05-05
Abstract: <PICT:0857257/IV(b)/1> Methylcyclopentadiene dimer is obtained by dehydrogenating a stream containing methyl cyclopentane and/or methyl cyclopentene to obtain a stream containing methylcyclpentadiene monomer and higher and lower boiling compounds which is separated into two fractions, the first containing most of the monomer and higher boiling compounds the second containing the remaining monomer and lower boiling compounds, soaking the first fraction to dimerise the monomer, contacting the second fraction with dimer product to absorb monomer and other hydrocarbons, distilling the extract so obtained together with the dimerised first fraction to recover dimer product and recycling part of such product to contact with the second fraction.  A methylcyclopentane feed in line 1 is heated and dehydrogenated in reactor 4 together with 0-8 volumes of recycle per volume of feed from line 5 in the presence of hydrogen from line 8 and a catalyst such as platinum or palladium on silica, chromina-alumina or a mixture of magnesium, ferric, cupric and potassium oxides at 300 DEG  C.-900 DEG  C. and a 0-100 p.s.i.a.  The product is quenched in tower 7 with a circulating quench oil.  The pressure of the vapours is increased to 15-200 p.s.i.a. and the temperature lowered to condense most of the C6 and heavier material which is separated as liquid in drum 16.  The overhead is contacted in tower 20 with dimer product from line 21 to absorb all hydrocarbons and leave pure hydrogen for recycle.  The extract passes to fractionator 24 along with liquid from drum 16 which has been dimerised in soaker 19 maintained at 50 DEG  C.-200 DEG  C. and 0-500 p.s.i.g. with a residence of 0,5-20 hours.  Some dimer is cracked in tower 24 while product dimer is recovered by line 26, some being passed by line 21 to tower 20. The overheads are cooled to condense C6 and heavier materials which are subjected to dimerisation in soaker 36, and flashed to separate materials lighter than dimer. Dimer is fed by line 41 back to the fractionator 24 or may be recovered separately.  The flashed vapours contain unreacted methylcyclopentane and are cooled to liquefy this and recycled by line 5 to the dehydrogenator.
Patent GB-491487-A (GB)
Title: Improvements in and relating to an electrically maintained balance and contact device for clocks
IPC: G04C3/06
Filed: 1937-01-27
Abstract: 491,487. Electric clocks. LANFRANCONI, F. A., and BRITISH VACUUM CLEANER & ENGINEERING CO., Ltd. Jan. 27, 1937, Nos. 15364/38 and 15365/38. Divided out of 491,442. [Class 139] In an electrically maintained balance and contact mechanism for clocks of the kind in which an oscillating magnetic bar or plate 15 is influenced by an electromagnet 8 supplied with impulses by means of a lever arm 18 rocked at intervals by a projection 25 fixed to the balance, the lever arm 18 is rigid and is pivoted at a fixed point 19, and a moving contact comprising a pin or projection 17 fixed to the lever arm makes momentary wiping contact with a resilient fixed contact 20. A leaf spring 24 engages a recess 24a in the lever arm tending to open the contacts. The pin 17 may be arranged to bridge a pair of fixed contacts. The clock is self-starting. Specification 491,442 is referred to.
Patent GB-1359936-A (GB)
Title: Oscillator circuit
IPC: H03J5/24
Filed: 1972-04-04
Abstract: 1359936 Tuning radio receivers; transistor frequency changing and oscillator circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 4 April 1972 [7 April 1971] 15425/72 Headings H3 and H3T An oscillator circuit capable of oscillating over a plurality of frequency ranges comprises an amplifying element 5, a plurality of frequency-determining resonant circuits 1, 2, one for each frequency range connected to the output electrode of the amplifying element 5, each frequency-determining resonant circuit having a tuning element, i.e. varactor diodes 8, 9, which tuning elements are simultaneously operated a separate capacitive feedback path, i.e. 10, 11, being provided for each frequency-determining resonant circuit, which path extends from its associated frequency-determining resonant circuit to a parallel resonant circuit one branch of which includes the input impedance of the amplifying element 5, the values of the elements in the feedback paths and in the parallel resonant circuit being chosen to be such that the conditions for self-oscillation are satisfied only over a part of the tuning range of each frequencydetermining circuit. In the embodiment, varactor diodes 8, 9 are varied simultaneously in capacity by means of variable bias voltage U A , and when this has its maximum value both capacities are at a minimum. Feedback from tuned circuit 2, which resonates at a lower frequency than tuned circuit 1, is so small, due to the potentiometer effect of capacities 9, 13 that oscillation does not occur: the feedback from tuned circuit 1 via capacity 10 is into a resonant circuit comprising the inductive input impedance of transistor 5 in conjunction with capacitor 12 however is such as to produce oscillation. As the bias U A  is reduced, a point is reached at which the phase of the feedback over this circuit, due to the transistor input circuit passing out of resonance, is such that oscillations cease. At some lower bias voltage U A , the feedback from tuned circuit 2 via potentiometer 9, 13, capacitor 11 and the additional impedances 6, 7 which form a resonant circuit which is lightly damped by the input impedance of transistor 5, is such as to cause oscillation to occur down to the maximum capacity of the varactor diodes. The arrangement may be used as a self-oscillating frequency changer, the signal being applied to terminal B and the I.F. signal derived from terminal ZF.
Patent GB-1212412-A (GB)
Title: Variable rate leaf spring suspension
Inventor: TURNBULL JOHN BARTHOLOMEW
IPC: B60G11/42
Filed: 1968-03-30
Abstract: 1,212,412. Variable rate leaf spring suspension. FORD MOTOR CO. Ltd. 30 March, 1968, No. 15430/68. Addition to 1,212,411. Heading B7D. A method of achieving a variable rate semielliptic leaf spring suspension in a motor vehicle comprises selecting the load in the vehicle at which the spring rate is to be lowest and connecting the ends of the leaf spring to the vehicle body so that at the selected load the effective distance between the ends of the spring is at a maximum. As shown, a leaf spring 1 is connected to the body at one end by an upturned, Berlin, or downturned eye 3 and at the other end by a pair of rubber blocks 9 which provide a longitudinal load on the spring. This load when the effective spring length is a maximum may be compressive or tensile and as the spring is deflected in bounce or rebound and the effective spring length decreases the compressive load decreases and may change to a tensile load or the tensile load increases, thereby increasing the spring rate.
Patent GB-832140-A (GB)
Title: Purification of novobiocin
IPC: C07H17/075
Filed: 1958-05-14
Abstract: Novobiocin is purified from admixture with the inactive isonovobiocin by treating the mixture with aqueous acetone containing acetone and water in the ratio of 1.2 to 1.8 to one by volume, i.e. 60% aqueous acetone.  The crude novobiocin is dissolved in the aqueous acetone and then allowed to crystallize; or is merely washed with the aqueous acetone.  Specification 815,518 is referred to.
Patent GB-457768-A (GB)
Title: Improvements in furnaces
IPC: F23D11/08
Filed: 1935-05-28
Abstract: 457,768. Liquidfuel burners. GREENAWALT, J. E., 135, East 42nd Street, New York, U.S.A. May 28, 1935, No. 15566. [Class 75 (i)] [See also Group XII] A liquid-fuel furnace comprising an annular combustion chamber C formed by side walls 43 and a bottom wall 44 supporting a centre column is provided in the space between the top of the column and the roof R of the chamber with a rotary liquid fuel burner B preferably of the form described and claimed in Specification 457,841.
Patent GB-763059-A (GB)
Title: Improvements in and relating to the composition and manufacture of semi-conductor devices
IPC: H01L23/10
Filed: 1953-06-05
Abstract: A Ge crystal for use in rectifiers (see Group XXXVI) comprises between 0.1 and 0.3 per cent by weight of Sb, and between 0.01 and 0.04 per cent of Bi.  The preferred composition is 0.2 per cent Sb and 0.02 per cent Bi in Ge containing less than 0.01 per cent of other significant impurities i.e. those acting as donors or acceptors of electrons but containing up to 0.78 per cent of non-significant impurities such as C and Si.  The Ge may be made by reduction of germanium oxide and purified by progressive solidification of the matter Ge to give a body of non-uniform impurity content.  The purer part is cut off, melted, doped with the Bi and Sb, and formed into a monocrystalline ingot by controlled coding.
Patent GB-115767-A (GB)
Title: Improvements relating to Valves for Steam Heating.
Inventor: SAWYER RICHARD
IPC: B61D27/00
Filed: 1917-10-27
Abstract: 115,767. Sawyer, R. Oct. 27, 1917. Multiple-way valves; closure members, sliding. -A valve for steam-heating in trains &c. comprises a slide E connected adjustably to an operating-member D by a pin G, the holes g in the slide being larger than the pin. An interposed laminated spring F, preferably of copper, bears on the slide E at two points, as shown, and yieldingly holds the slide to its seating. A rack d on the member D is engaged by a toothed disk c on the spindle B of the operating-handle. In the closed position of the valve, as shown, the casing H communicates with the atmosphere through a port k in the valve slide E and ports h, h<1> in the casing.