baber/WOPTO huggingface dataset:
Patent GB-1091075-A (GB)
Title: A device for aiding the starting of internal combustion engines
Inventor: CURZON THOMAS
IPC: F23Q7/00
Filed: 1964-06-16
Abstract: 1,091,075. Starting; vaporizers. C. A. V. Ltd. Aug. 26, 1965 [June 16, 1964], No.24863/64. Headings F1B and F1K. The invention relates to a starting device of the kind adapted to be mounted in the air intake maniford (not shown) and comprising a tubular body having a liquid fuel inlet 14 at one end, an electrical heating element 20 surrounding the body, a valve 16 seating in the body and a stem 17 mounted within the body and adapted to hold a valve closure member against the seating, the stem and body having different coefficients of expansion whereby when the body and stem are heated the closure member can move away from the seating to permit flow of fuel through the body. According to the invention the heating element is at least in part formed as a coil of wire, in which the individual turns of the coil are of triangular form, with the straight portions of the turns touching the body at or near their mid points.
Patent GB-711535-A (GB)
Title: Improvements in or relating to circuit arrangements including lowfrequency relaxation oscillators
Inventor: DAVISON ALAN
IPC: H03K3/04
Filed: 1950-10-12
Abstract: 711,535. Automatic exchange equipment. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Oct. 10, 1951 [Oct. 12, 1950], No. 24900/50. Class 40 (4) [Also in Group XL (c)] Fig. 5 shows a tone generator for use in an automatic telephone exchange. Valve VH oscillates at a frequency of 400 cycles per second by virtue of the coupling via coils CO and its output is amplified in stage VG to give a continuous 400 cycles per second. An NU. tone at lead 10 and a second output at lead 11 is interrupted by contacts A3 of relay A, which is controlled by a relaxation oscillator, Fig. 1 (not shown) (see Group XL (c)), to give a busy tone of 400 cycles per second interrupted for two seconds in every three. The 400 cycles per second is modulated at 16.6 cycles per second by earth applied to the right hand winding of coil RT via contacts D1 of relay D, which is controlled by a multivibrator, Fig. 3 (not shown) (see Group XL (c)), and is interrupted at contacts C2 of relay C to provide interrupted ring tone at lead 12. Relay C is controlled by a multivibrator Fig. 2 (not shown) (see Group XL (c)). Transformer TRA is supplied on its primary side with earth alternately from contacts D1 and E1, which is controlled by relay E in a multivibrator current, Fig. 3 (not shown) (see Group XL (c)), so that dial tone having a peaky waveform and a frequency of 33.3 cycles per second is fed to lead 13. Continuous ringing current 16.6 cycles per second is supplied at lead 14 and interrupted ringing via contacts C3 at lead 15. The thermionic valves used in the generator have directly heated low voltage cathodes which are connected in series with a ballast resistor BR across the 50 volts supply (see Group XL (c)).
Patent GB-927468-A (GB)
Title: A power dissipation protection (or reducing) circuit for transistor switches having inductive loads
IPC: H03K17/08
Filed: 1960-07-18
Abstract: 927,468. Transistor switching circuits. NORTH AMERICAN AVIATION Inc. July 18, 1960 [Aug. 11, 1959], No. 24926/60. Class 40 (6). An arrangement for preventing excessive switchoff voltages from building up across a transistor switch, includes a transistor 1; a first output electrode 7 connected in series with a parallel combination of an inductor 9 and a diode 18; and a further circuit comprising a parallel arrangement of a diode 12 and a resistor 17 in series with a capacitor 13, connected between the output electrode 7, and a further output electrode 5. When the transistor is switched off by a pulse generator MV, capacitor 13 charges through the load 9, a resistor 8 being included to determine the charging time constant. The capacitor is discharged through resistor 17 when the transistor is switched on.
Patent GB-685604-A (GB)
Title: Improvements in or relating to radar systems
Inventor: BRANDON PERCY SAMUEL
IPC: G01S13/34
Filed: 1948-09-23
Abstract: 685,604. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 15, 1949 [Sept. 23, 1948], No. 24956/48. Class 40 (vii). The possible range scan of a F.M. radar system is increased by gating on the receiver for a relatively short time (of the order of one-tenth of the total time) during each cycle of transmitter modulation, this operative time occurring at about the middle of the modulation cycle. It is stated that this permits an increase of ten times in range scanning speed, with corresponding loss of resolution, without change in signal/noise ratio, and avoids the practical difficulties associated with the more obvious methods of changing the resolution by varying the limits of transmitter frequency deviation or the rate at which the frequency deviates. Beat frequencies derived by mixing received reflected waves with waves then being transmitted are fed to the primary terminals " In " of a transformer T, the secondary of which supplies two pentodes V1 and V2 in push-pull and normally cut-off by a backing-off voltage applied to their screen grids via terminal BV. The gating pulse is obtained from a sine wave source SW (which is synchronized with the transmitter modulation by the application of a control wave to the terminal TM) by amplitude limiting in amplifier AL to produce a rounded negative-going pulse which is phase-reversed in PR and applied through condenser K to the screen grids of the valves to render the latter conductive for each such pulse. The output transformer OT feeds the pulse-modulated beat note to a swept beat frequency oscillator or other known type of analyser for " range scanning." Specifications 656,094 and 656,578 are referred to.
Patent GB-1007468-A (GB)
Title: Improvements in or relating to pit props or like support devices
IPC: E21D15/42
Filed: 1962-07-29
Abstract: A friction shim inserted between a clamp and the upper member of a pit prop is of austenitic steel having the preferred composition: .less than 0.15%.C, .less than 1.0%.Si, .17.0-19.0%.Mn, .11.0-13.0%.Cr, .0.3-0.6%.Mo, .1.5-2.5%.Ni, .less than 0.8%.P, .balance.Fe
Patent GB-851817-A (GB)
Title: Improvements relating to the crimping of textile fibres
Inventor: FINLAYSON DONALD
IPC: D02G1/02
Filed: 1956-08-16
Abstract: 851,817. Crimping fibres and yarn. BRITISH CELANESE Ltd. Aug. 14, 1957, [Aug. 16, 1956], No. 25091/56. Class 120(3). Staple or multifilamentary yarns or untwisted filaments are crimped by running a plurality thereof through a zone in which they are temporarily twisted together, trapping the doubling twist, positively at the exit end of the zone, but frictionally at the entry end thereof, and setting in the fibres or filaments the distortions imposed by the entrapped twist. The yarns &c. may be of cellulose acetate, viscose, polyhexamethylene adipamide, polyaminocaproci and, or polyethylene terephthalate. Setting may be effected by dry heat e.g. by passage of yarn through an electrically heated tube or channel or over and in contact with a curved heated surface as may be formed by a plate, open channel or tube which may have a heat-insulating or reflecting cover, or by a gaseous or liquid medium e.g. steam, air, solvent vapour, or water. The crimped yarns &c. may be stapled and reconstituted into yarns and/ or doubled with similar or different yarn(s) e.g. yarns crimped by opposite temporary twist or uncrimped yarn, optionally with a further binder yarn, as by the methods described in Specifications 471,061 and 790,128. As shown in Fig. 1, yarns 5 drawn from packages 6 pass over a guide 7, to a braked roller 8 serving as a tensioner, thence one on each side of a guide roller 9 serving as a doubling twist stop, through a falsetwisting device 11 comprising a tubular spindle carrying wire loops 14 for guiding the yarn through several sharp changes in direction, through a heated tube 15, and the yarns are separated by a roller 16, withdrawn by nip rollers 21 and separately wound into packages 23. The distance between the roller 9 and the spindle 11 is about twice the distance between the spindle and the roller 16, in which latter zone the doubling twist produced by the spindle (optionally, augmented by doubling twist imparted to the yarns during threading-up) is concentrated and the resulting deformations are set. As shown in Fig. 2, an untwisted bundle 26 of continuous filaments is withdrawn from a cheese 27 under tension determined by braked supporting rolls 28, half of the filaments passes on each side of the roller 9, to a friction element 33 comprising horizontal bars through which the bundle is threaded, thence through the heater 15, the filaments are separated into the two halves at the roller 16, then reunited and wound in crimped form on a package 34. The element 33 is disposed in similar relation to the rollers 9 and 16 as the spindle of Fig. 1, and the doubling twist between the halved bundles (initially inserted during threading-up) is maintained and the deformations set in the zone between the element 33 and the roller 16.
Patent GB-1386818-A (GB)
Title: Cigarette packaging
IPC: B65B19/02
Filed: 1972-06-23
Abstract: 1386818 Packaging cigarettes E H GELDMACHER 23 June 1972 [24 June 1971] 25103/73 Heading B8C To prevent tobacco crumb escaping from the ends of cigarettes packaged in plastics foil, the foil adjacent the cigarette ends is electrostically charged by rubbing. The package is conveyed by a pair of opposed conveyer belts past rotating brushes which rub the foil. The cigarettes are individually packaged in pockets in a translucent or transparent plastics foil to which a second foil is welded to close the package. Cushions of moistened foam material may be disposed between the ends of the cigarettes and the ends of the pockets.
Patent GB-499475-A (GB)
Title: Arrangement for electrodynamic relays
IPC: H01H53/015
Filed: 1938-08-27
Abstract: 499,475. Electromagnetic relays. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Aug. 27, 1938, No. 25216. Convention date, Sept. 2, 1937. [Class 38 (v)] In an electrodynamic relay, particularly a power directional relay having a stationary coil 2 and a movable coil 3 mounted on an arm 4 pivoted at 5, the effect of mutual induction between the coils 2, 3 which tends to pull the coil 3 back to the position shown is compensated for by arranging a short-circuited coil 10 on the arm 4 adapted to co-operate with a coil 11 in series with the coil 2. The effect of mutual induction between the coils 10, 11 is one of repulsion. The arm 4 carries a contact 7 adapted to engage a contact 8 or 9 according to the direction of power.
Patent GB-259614-A (GB)
IPC: H01J1/15
Filed: 1926-10-11
Abstract: 259,614. British Thomson-Houston Co., Ltd., (Assignees of Paul, W. E.). Oct. 10, 1925, [Convention date]. Vacuum tubes.-A discharge tube, particularly for use in a protective system, has an electron emitting cathode, an anode, the magnetic field produced by the cathode being neutralized by the field produced by a conductor which carries the cathode current and a current independent of the cathode current. A cathode in the form of a cylinder of wires 2 is mounted between an anode 4 and a central tubular conductor 3, the wires being mounted at one end on a metal ring 8 secured to the conductor 3, and at the other end on a metal ring 7 spaced from the conductor by an insulator 9. The conductor and anode mav be cooled by a fluid. The cathode wires are connected in series with the conductor 3, a switch 17, a heating battery 11, and a switch 13 controlled by a winding 23 in the power circuit. A holding winding 25, in series with the tube, closes the heating circuit through the switch 17, and the power circuit through switches 26, 29. The magnetic field due to the conductor 3 is normally sufficient to neutralize the field due to the wires 2, and an adjustable resistance 20 is shunted across the conductor 3 for adjusting the relative strengths of the field. When a short-circuit occurs the switch arm 13 is moved on to a contact 29, thereby connecting the conductor 3 directly with the battery, and de-energizing the cathode. The field produced by the increased -current through the conductor interrupts the discharge suddenly, and the switches 17., 26, 29 are opened. Specification 189,125 is referred to.
Patent GB-870201-A (GB)
Title: Improvements in or relating to relays
IPC: H01H61/013
Filed: 1958-08-07
Abstract: 870,201. Thermal switches. MINNESOTA MINING & MANUFACTURING CO. Aug. 7, 1958 [Aug. 15, 1957], No. 25389/58. Class 38 (5). [Also in Group XIII] A column consisting alternately of N-type elements 27 and P-type elements 28 separated by insulators 29 is arranged between two members 10, 11, the differential expansion and contraction of which is used to actuate a contact 16 movable between fixed contacts 17, 18. The elements 27, 28 are connected in series by members 30, 31 which are electrically insulated from the members 10, 11 but in good heat transfer relation therewith. If current from a D.C. source 36 flows upwards from terminal 32 to terminal 33, the left-hand side of the column is cooled and the right-hand side heated, thereby causing member 10 to contract and 11 to expand. The contact 16 is thus moved to engage contact 18. If the polarity of the D.C. is reversed, contact 16 engages contact 17. In a modification, Fig. 2 (not shown), the contact 16 is carried on an arm integral with the members 10, 11. Specifications 765,884, 766,999, 806,640 and 814,594 are referred to.
Patent GB-863915-A (GB)
Title: New monoazo dyestuffs and their metal complexes and processes for the production thereof
Inventor: BAUMANN HANS
IPC: C09B45/14
Filed: 1959-07-24
Abstract: The invention comprises dyes of formula :  <FORM:0863915/IV(c)/1> where Ar is a benzene or quinoline residue, A is H, Hlg, alkyl, sulphonic acid, sulphonamide (which may be substituted) or alkyl- or arylsulphone, B is O or S and R an amino or substituted amino group or an aliphatic or aromatic radical, and their metal complexes.  The dyes are made in conventional fashion from appropriate aniline or quinoline diazo components and naphthalenic coupling components, coupling being effected under acid conditions.  Indicated substituents for the diazo components are :-halogen, alkyl, alkoxy, nitro, acylamino, carboxy and sulphonic acid groups or groups of formula COX or SO2X where X is an alkyl, aryl, amino or substituted amino group.  Indicated as metallizable groups in Ar in #s position to N, are chlorine, hydroxy, alkoxy, carboxy, carbalkoxy and sulphonic acid ester. Specified metals are : Cu, Zn, Cr, Co and Ni. Organic compounds which form metal complexes e.g. 8-hydroxyquinoline, may be present during metallization.  The dyes colour natural and synthetic polyamides such as wool, polycaprolactam and polyhexamethylene diamine adipate.  Examples are provided of the preparation of the dyes and their metal complexes and their use in colouring nitrogenous fibres in a variety of colours. Specification 692,073 is referred to.
Patent GB-763947-A (GB)
Title: Improved etiocholanic acid derivatives and methods for their production
IPC: C07J75/00
Filed: 1953-07-10
Abstract: The invention comprises saturated compounds of the cyclopentanophenanthrene series containing a keto group as substituent in 3-position, a free or functionally-derived hydroxyl group in 11a -position, in 17-position a free or functionally derived carboxyl group and a halogen atom in 4-position.  In an example, 3-keto-11a -acetoxy-etiocholanic acid methyl ester is treated with bromine to produce 4-bromo - 3 - keto - 11a  - acetoxyethiocholanic acid methyl ester.  Specification 763,946 is referred to.
Patent GB-1503586-A (GB)
Title: Cylinder lock mechanism
IPC: E05B29/00
Filed: 1975-06-16
Abstract: 1503586 Cylinder lock mechanisms WARTS1LA AB OY 16 June 1975 [17 June 1974] 25512/75 Heading E2A A cylinder lock mechanism comprises: an outer cylinder 1 having a longitudinal groove 8 having a lateral step 9; an inner cylinder 2 rotatable in the outer cylinder and having a longitudinal slot; a plurality of discs rotatable by a key and each having a deeper peripheral groove 5 and at least one shallower groove 1, and a locking bar 4 which resides (1) in a channel formed by the groove 8 and the slot when properly locked (not shown), (2) in a channel formed by the step 9 of the groove 8, the notch and aligned shallower disc grooves 7 after attempted picking (as shown) and (3) in a channel formed by the slot and aligned deeper grooves 5 when unlocked with a suitable key (not shown).
Patent GB-962920-A (GB)
Title: Motor vehicle
Inventor: JONES GEORGE ARTHUR
IPC: B60K17/28
Filed: 1961-07-14
Abstract: 962,920. Motor vehicle transmission gearing. STANDARD MOTOR CO. Ltd. April 3, 1962 [ July 14, 1961], No. 25536/61. Heading B7H. [Also in Division F1] In a motor vehicle having an engine at one end driving road wheels at the other, the power outfit shaft 11, Fig. 1, is at a lower level than the crankshaft 10 and connected thereto by gearing 16 . . . 18, the output shaft 11 being connected to a propeller shaft 33, Fig. 2, which drives the road wheels through a changespeed gear spaced from the engine. The gearing 16. . . 18 is enclosed by a removable casing 23 and the shaft 11, which passes through a tube 26 in the crankcase is supported by a bearing 29, Fig. 2, carried by an extension 30 of the crankcase. In a modification, Fig. 4, the engine is tilted so that the shaft 33 does not pass through the crankcase. In a further modification the output shaft 11 is driven from the inner end of the crankshaft.
Patent GB-204519-A (GB)
Title: Improvements in rear live axles for motor vehicles
IPC: B60K17/16
Filed: 1922-09-21
Abstract: 204,519. Vaughan, C. F. Sept. 21, 1922. Axles and axle structures.-The rear axle comprises a one-piece casing A having a single central aperture to receive a cover A<3> which carries bearings and forms a complete support for the driving and differential gearing. When the axle shafts E have been withdrawn the gearing can be removed with the cover A<3> and dismantled. The cover carries bearings A<5>, B<4> for the worm-shaft B and bearings E' for the differential housing. The plates D comprising the housing are bolted together and to the worm-wheel by bolts C<3>, so that when the bearings E<4> and the bolts have been removed the differential can be dismantled. The shafts E are hollow and have solid plugs at their ends, the inner plugs E<2> having the sun wheel teeth of the differential cut on them. The outer end of each shaft has fixed thereon the brake drum H to which the road wheel is detachably secured. The axle bearing E<8> is retained in position by a plate F which is secured by bolts (not shown). When the bolts have been removed the axle-shafts E can be withdrawn from the axle-casing.
Patent GB-1356613-A (GB)
Title: Machines for folding flat strip into a channel
IPC: B21D5/01
Filed: 1971-05-11
Abstract: 1356613 Forming metallic strip stock; angular bending SEALED POWER CORP 11 May 1971 [21 May 1970] 25594/73 Divided out of 1356611 Headings B3A and B3E A machine for forming flat, metallic strip stock into a channel, the strip stock having incremental sections each comprising two substantially parallel bands extending lengthwise of the stock joined by a transverse strut equidistantly spaced from struts of adjacent sections, comprises means for guiding the stock with a step-by-step movement past a work station, strut bending means at the work station including a row of punches and dies operable on successive struts to bend each strut in stages to form the stock into a channel-shaped cross-section and means for operating the bending means in alternation with the strip feeding means. The machine is described in detail in Specification 1,356,611.
Patent GB-750139-A (GB)
Title: Improvements in or relating to automatic telephone systems
IPC: H04M19/00
Filed: 1955-01-31
Abstract: 750,139. Automatic exchange systems; automatic volume control. GENERAL ELECTRIC CO., Ltd., and BEESLEY, J. H. Jan. 31, 1955, No. 25672/52. Drawings to Specification. Class 40 (4). In a line circuit, particularly designed for use in exchanges the switches of which have low current carrying capacity, a variable-gain amplifier is provided which normally has a highgain so that ringing signals from the exchange may be amplified sufficiently to actuate the subscriber's bell; but when the called party answers (or initiates a call), the direct current flowing in the line loop biases the amplifier to a condition of low gain suitable for the transmission of speech. The invention is described as applied to an exchange employing time division multiplex switches.
Patent GB-634346-A (GB)
Title: Improvements in or relating to arc welding in inert atmospheres
IPC: B23K35/22
Filed: 1948-08-27
Abstract: A sintered alloy arc heating or welding electrode comprises one-tenth to three per cent thoria dispersed in tungsten.
Patent GB-968752-A (GB)
Title: Production of benzonitrile
Inventor: RICHMOND MICHAEL HUGH
IPC: C07C255/49
Filed: 1962-07-05
Abstract: Benzonitrile is prepared by passing a hydrogenated benzonitrile in the vapour phase at a raised temperature over a catalyst comprising palladium on a carbon support, the catalyst containing not less than 1% of palladium.  A suitable starting material is a reaction product of butadiene and acrylonitrile, and an example is given in which tetrahydrobenzonitrile prepared in this way is passed at 450-500 DEG C. over a catalyst comprising 1% of palladium on carbon.
Patent GB-697574-A (GB)
Title: Tubular metal struts
IPC: E21D11/28
Filed: 1951-11-05
Abstract: 697,574. Tubular struts for interconnecting stanchions or roof supporting arches in mines. SMITH, W. E. March 17, 1952 [Nov. 5, 1951], No. 25798/51. Class 20(ii) [Also in Group XXVIII] A tubular strut for interconnecting stanchions or as shown mine roof supporting arches 18, Fig. 1, is provided with an axially projecting loop 14 at one end and with longitudinally disposed through slots 17 at the other end, the loop 14 of one strut being adapted to be passed through a hole 19 in the web of the arch 18 to extend into the slotted end portion of a like strut so that a wedge or cotter 21, Fig. 2, may be passed through the aligned slots and loop to clamp the ends of the struts against the arch 18. Each strut 10 is provided with square centrally apertured end plates 12 adapted to prevent rotation of the struts by engaging the flanges 22 of the arch 18. For securing the loop 14 of an end strut to the last of a series of arches, the cotter 21 is inserted in the loop only whilst the slotted end of an end strut is secured by means of a fitting comprising a square washer. or plate 24, Fig. 4 (not-shown), to which a loop member 14 is welded, this fitting being used exactly as if it were the end of a tubular strut.
Patent GB-1197402-A (GB)
Title: Improvements relating to Control Spools
IPC: F16K11/07
Filed: 1968-05-30
Abstract: 1,197,402. Valves. ROBERT BOSCH G.m.b.H. 30 May, 1968 [1 June, 1967], No. 25860/68. Heading F2V. [Also in Division B3] A control spool for an hydraulic change-over valve is made from two identical turned parts 11 each formed with end pistons 14, 15 joined by a bridge 16 over which is pressed a sleeve 12 with chamfers 31, 32. The cylindrical surface of each bridge 16 has bores (22) containing copper solder. The pistons 15 are pressed into a ring 25 under the inclusion of copper solder 24. The assembled spool is soldered, hardened and ground and forms flow-through spaces 26, 27. In another embodiment a turned part has three piston portions joined by bridges over which are pressed sleeves. The central piston and one end piston have a sleeve and larger diameter piston respectively pressed thereon to make the three pistons and the two sleeves the same external diameter. The sleeves are soldered by copper solder inserted into the flow through spaces and penetrating between the sleeves and larger diameter piston and the turned part. The solder may be dispensed with between the bridges and sleeves, the latter merely being pressed on to the bridges.