baber/WOPTO huggingface dataset:
Patent GB-208853-A (GB)
Title: Improvements in or relating to brake mechanism for perambulators and the like
IPC: B62B5/04
Filed: 1922-10-26
Abstract: 208,853. Coe, J. C. C., and Trawford, C. Oct. 26, 1922. No Patent granted (Sealing fee not paid). Locking by frictional detents; actuated or applied by springs and weights.-A brake for the front wheels of a perambulator &c. comprises a transverse brake bar movable under spring pressure relatively to a foundation bar fixed to the undercarriage and actuated by pedal action. The brake bar 9 of channel section is provided with adjustable blocks 11 and is guided by pins 14 passing through holes in the web of a foundation bar 1 also of channel section provided with slotted end pieces 8 by which it may be bolted to the framework. Springs 15 surrounding the pins 14 tend to apply the brakes which are normally held off by pawl levers 18 pivoted at 17 to the bar 1 and held by a spring 20 in engagement with the edges of slots in the web cf the bar 9 through which the pawls pass. The other ends of the levers 18 are linked by rods 22 to a sliding piece 23 which is acted upon to force the pawls out of retaining engagement by a pin 24 actuated by the pedal 25. The bar 9 is withdrawn by a rod 28 actuated by a second pedal 31. The foundation bar may be adjustably supported by a rear cross-bar of the underframe..
Patent GB-390871-A (GB)
Title: Improvements in and relating to carton blank folding machines
IPC: B31B7/46
Filed: 1931-10-21
Abstract: 390,871. Positive clutches. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Peters Machinery Co. ; 4700, Ravenswood Avenue, Chicago, U.S.A.) Oct. 21, 1931, No. 29219. [Class 80 (ii).] A clutch, for intermittently rotating the shaft 38 of a cartonforming machine, comprises an element 39 splined to the shaft and rotated when a pin 40 supported therein is rocked so that a cut-away face 41 is brought into engagement with similar pins carried by an element free on the shaft 38 and continuously rotated from the main driving shaft of the machine. The pin 40 is rocked by a spring 43 to engage the clutch when a pawl 44, carried by a connecting-rod 46 actuated from the main driving shaft, is moved out of the path of a finger 45 on the pin ; the movement of the finger is limited by flat surfaces 48 thereon engaging a flat surface on the member 39.
Patent GB-742441-A (GB)
Title: Pyridyl aliphatic alkylene polyamine poly-acids
Inventor: BERSWORTH FREDERICK CHARLES
IPC: C07D213/38
Filed: 1953-10-22
Abstract: The invention comprises compounds (other than those claimed in the parent Specification) of formula <FORM:0742441/IV(a)/1> wherein R is a chain of up to 12 carbon atoms in length saturated with hydrogen or monovalent alkyl radicals containing fewer carbon atoms than said chain; "alkylene" includes cycloalkylene and interposes 2 or 3 carbon atoms between the nitrogen atoms; n is 1 or 2; x is 1, 2, 3 or 4; and M is H and/or Na, K, Li, Ce, Rb, ammonium or a substitutedammonium group.  Compounds in which M is H are prepared by the procedure described in the parent Specification using appropriate starting materials, e.g. a 2-chloroalkyl-pyridine and 1 : 2 - diamino - cyclohexane, 1 : 2 - diamino - cyclopentane or tetra - (ethylethylene)-pentamine, and these compounds may be converted into their mono-, di-, tri-, or higher salts by dissolving appropriate quantities of poly-acid in an aqueous medium containing the desired alkali metal base, ammonia or amine, and crystallizing out the salt so formed.
Patent GB-747097-A (GB)
Title: Steroids
IPC: C07J75/00
Filed: 1952-11-20
Abstract: The invention comprises 3,11-beta-dihydroxy-pregnane-20-one-ketals of the general formula <FORM:0747097/IV(a)/1> wherein R represents hydrogen or an alkyl radical containing up to 6 carbon atoms and n is 1 or 2, and the preparation thereof by mixing the corresponding 11-keto compound with lithium aluminium hydride, sodium borohydride or lithium borohydride in an inert organic solvent at a temperature below about 100 DEG  C., and then decomposing the complex reaction product by a known method.  The preferred reaction temperature range is between about 0 DEG  and about 80 DEG  C.  Suitable solvents referred to are ether, benzene, tetrahydrofuran and dioxan, and mixtures thereof.  When the borohydrides are used for the reduction, the solvent may be an alcohol such as methanol, ethanol and isopropyl alcohol, and mixtures thereof, and aqueous organic solvents such as dioxan-water and alcohol-water mixtures.  The process may be modified in that the 3-hydroxy-11,20-dione-20-ketal reactant is prepared by heating 3-hydroxypregnane-11,20-dione and an alkane diol of the general formula <FORM:0747097/IV(a)/2> wherein n and R have the above significance, in the presence of an acid catalyst.  The group R may be a methyl, ethyl, propyl, isopropyl, butyl, 1-methylpropyl, amyl or hexyl group.  In the examples the following compounds are prepared 3a ,11b  - dihydroxypregnane - 20 - one - 20 - ethylene glycol ketal and the corresponding compounds where the ketal group is derived from propane-1,2-diol, hexane-1,2-diol, octane-1,2-diol and propane-1,3-diol, and 3b ,11b -dihydroxypregnane - 20 - one - 20 - ethylene glycol ketal.  The preparation of the intermediate compound 3a -hydroxypregnane-11,20-dione - 20 - one - 20 - ethylene glycol ketal by the method referred to above is described.  Similar intermediate and final compounds are referred to wherein the ketal groups are derived from butane-1,2-diol, 3-methylpentane-1,2-diol, hexane-1,2-diol, heptane-1,2-diol, octane-1,2-diol and pentane-1,3-diol.  Specification 747,096 is referred to.
Patent GB-1529971-A (GB)
Title: Filter elements
IPC: B01D39/14
Filed: 1976-07-12
Abstract: 1529971 Filter elements VOKES Ltd 12 July 1976 [14 July 1975] 29484/75 Headings B1D and BIT A filter element comprises a pleated fibrous filtering sheet to which is bonded on one or both sides a fibrous supporting matrix of over 85% void volume, which may have some filtering action but serves mainly to keep the pleats open under pressure. The matrix may comprise glass or synthetic fibres (polypropylene in an example) bonded by heat, needling or adhesive, and the matrix is similarly bonded to the filtering sheet prior to pleating them together. The filtering sheet may be felt, impregnated paper or plastics fibrous web. The element may be generally flat in a rectangular frame or annular with two end caps and perforate support tubes inside and/ or outside. The inner tube could be replaced by a helical spring or a porous core (e.g. polyurethane). Elements may filter gas or liquid, particularly fuel/lubricating oils. A typical matrix comprises 60% of 150 denier polypropylene fibres and 40% of 18 denier fibres comprising a central core and annular sheath of different grades of polypropylene, needled and heat-bonded.
Patent GB-192760-A (GB)
Title: Improvements in or relating to centrifugal fans
IPC: F04D17/16
Filed: 1921-11-07
Abstract: 192,760. Howden & Co., Ltd., J., and Kowden, W. H. Nov. 7,1921. Impeller blades.-The impeller of a centrifugal fan has a hollow boss formed of two parts 6 which clamp rings 7 carrying the blades 8 at an inclination to the axis 10 of rotation so that the boss is not subject to radial stresses. The parts are made of steel and the outer ends of the blades 8 are connected by a ring 9. The clearance between the casing and the impeller is diminished by brass strips 11 secured in grooves in the casing. The inlet openings are. provided with guide blades 3 welded to rings 4, 5 the latter 5 of which is set in a groove in the casing 1.
Patent GB-1401076-A (GB)
Title: Lubricating oil composition
IPC: C10M141/08
Filed: 1972-06-23
Abstract: 1401076 Lubricants ATLANTIC RICH. FIELD CO 23 June 1972 [9 July 1971] 29624/72 Heading C5F A lubricant composition comprises (a) a major proportion of mineral lubricating oil and oxidation-inhibiting amounts of (b) at least one naphthylamine of formula where R<SP>2</SP> is H or a monovalent essentially hydrocarbon radical containing 1-30 carbon atoms, a is 0 to 7 and D is a monovalent essentially hydrocarbon radical containing 1-30 carbon atoms, and (c) at least one diamine of formula where R<SP>3</SP>, R<SP>31</SP> , R<SP>41</SP> and R<SP>4</SP> are H, C 1-12  alkyl, or C 6-22  aryl, aralkyl or alkaryl provided that at least one of R<SP>3</SP> ,  R<SP>31</SP> , R<SP>41</SP> and R<SP>4</SP> is not H, and B is a divalent aromatic-containing essentially hydrocarbon radical containing 6-30 carbon atoms. In a further embodiment, the composition contains (1) at least one alkali metal or alkaline earth metal phenate, (2) at least one chlorinated, essentially hydrocarbon component comprising at least 5 wt. per cent chlorine, and (3) at least one compound of formula where each R<SP>1</SP> is a monovalent C 1-30  hydrocarbon, and x and y are each 1-9. The composition may also include at least one alkali metal or alkaline earth metal sulphonate. Many specific phenates, sulphonates, chlorinated hydrocarbons and detergents are listed.
Patent GB-741782-A (GB)
Title: Improvements in or relating to devices for demodulating high-frequency signals
IPC: H04B1/30
Filed: 1953-10-27
Abstract: 741,782. Radio receiving circuits. TELEFONAKTIEBOLAGET L. M. ERICSSON. Oct. 27, 1953 [Oct. 27, 1952], No. 29677/53. Class 40 (5). A signal comprising a carrier frequency (V 1 ) and a single side-band is demodulated by dividing it between two channels comprising filters 3, 5, Fig. 2, which alter the carrier level by factors k 1 , k 2  respectively, without affecting the side-band amplitude. The filters feed squarelaw detectors 4, 6 respectively, the outputs of which are combined in opposition. The Specification gives a mathematical demonstration that in this way spurious beat-frequencies in the demodulated output are eliminated. The output contains a D.C. component which may be used for automatic gain control. In one embodiment, Fig. 3, the detectors comprise a double triode 12 biased for square-law operation by means of a common cathode resistor 13 and feeding a push-pull output transformer 15. The grid of one element is fed directly with signal from an input transformer 7 and the grid of the other via a parallel-resonance circuit 8, 9 tuned to the carrier frequency. Between the centre of the transformer 7 and the second grid is connected a choke 10, having a centre-tap which is earthed. A resistor 11 is connected so as to cancel out the residual carrier passed by the circuit 8, 9 at resonance. In another embodiment, a pair of contact rectifiers 23, 16, Fig. 5, are fed from a line which is shunted by a pair of equal resistors 21, 22 in series. The resistor 22 is shunted with an acceptor circuit 19, 20 tuned to carrier frequency. The rectifier outputs are combined in opposition by means of a pair of resistors 17, 18, the resistor 18 comprising a potentiometer used for obtaining an exact balance. In a further embodiment, Fig. 7 (not shown), one rectifier is fed directly and the other through a low- or high-pass filter.
Patent GB-733417-A (GB)
Title: Improvements in turbine machines and particularly gas turbine engines
IPC: F01D5/02
Filed: 1951-12-19
Abstract: 733,417. Gas turbines; centrifugal fans. GENERAL MOTORS CORPORATION. Dec. 19, 1951 [Dec. 23, 1950], No. 29700/51. Classes 110 (1) and 110 (3). [Also in Group XXIV] A turbine machine comprises a pair of coaxial shafts which are movable axially relatively to one another and are interconnected by a tie-bolt and have interposed therebetween a spring which is stressed by said relative movements consequential upon temperature changes in order to reduce the end thrusts on said shafts. The compressor comprises end discs 11, 12 which are supported by a roller bearing 13 and a ball thrust bearing 16 respectively and are interconnected by a bolt 17. The turbine shaft 18 is supported by a ball thrust bearing 22 and a roller bearing 24. The turbine and compressor shafts 18, 14 are splined to a hollow shaft 28 so as to permit relative longitudinal movement therebetween and are interconnected by a tie bolt 31, for transmitting end thrust between the rotors. The tie bolt 31 is urged towards the compressor by a spring which engages a collar on the tie bolt and is adjustably disposed in a housing 33. The housing 33 is threaded into the shaft 14 and locked therein by a set screw. A pin extends through the housing 33 and slots in the tie bolt and collar to prevent relative rotation between these members. The tie bolt is located within the shaft 18 by a flanged nut 53 and is protected by tubular radiation shields 52 of polished metal. The nut 53 is locked within the shaft 18 by a pin which extends through said members and through a collar 57 for locating the bearing 24 on the shaft. The housing 33 is slotted at the turbine end and has ports to permit a circulation of oil to the splined connection between the shafts 14, 28. Oil is pumped from a chamber 51 through the members 17, 14 and 31 and radial passages in the members 31, 53 and 18 to the bearing 24.
Patent GB-1216956-A (GB)
Title: A process for the production of cyanopyridines
Inventor: HAGEDORN FERDINAND
IPC: F16C35/04
Filed: 1969-06-12
Abstract: 1,216,956. Cyanopyridines. FARBEN FABRIKEN BAYER A.G. 12 June, 1969 [10 July, 1968], No. 29734/69. Heading C2C. [Also in Division B1] Cyanopyridines are produced by reacting alkyl pyridines with oxygen or air, ammonia and optionally steam, in the gas-phase using as catalyst tin phosphate which has been activated with one or more compounds of molybdenum, vanadium, bismuth, iron or cobalt.
Patent GB-1062873-A (GB)
Title: Loading plant for liquids
IPC: B67D7/00
Filed: 1963-07-26
Abstract: 1,062,873. Dispensing liquids. EDELEANU G.m.b.H. July 26, 1963 [July 28, 1962; March 23, 1963; May 2, 1963], No. 29820/63. Heading A4T. [Also in Division B8] A plant for loading liquids into road or rail tankers comprises a telescopic pipe 1 mounted on a carriage 2 movable along a platform 3 to the correct filling position. The pipe 1 is connected by articulated pipes 4 to a fixed conduit 5 and can be extended into as tanker by an electric motor controlled by switches which prevent over extension of the pipe or movement of the tanker by mechanism 6 while the pipe remains in the tank. Various valves and antidrip devices may be mounted on the end of the pipe 1.
Patent GB-332137-A (GB)
IPC: F02B77/10
Filed: 1929-10-02
Abstract: 332,137. Allgemeine Elektricitõts- Ges. Oct. 20, 1928, [Convention date]. Detecting leaks by means of fumes.-To prevent explosions in the crank chamber of an internal-combustion engine a gas which is poor in oxygen, e.g. nitrogen or exhaust gas is introduced into the chamber, which is sealed. If an odourless inert gas, leakage of which may be harmful to the operatives, is employed, it may be mixed with an agent having a distinctive odour; ammonia or mercaptan may be used.
Patent GB-888757-A (GB)
Title: Hairpiece and method of making same
IPC: A41G3/00
Filed: 1959-09-02
Abstract: 888,757. Wigs. Le MOLE, G. M. Sept. 2, 1959, No. 29933/59. Class 131 A wig comprises hairs 25 knotted to loops of a net 13 which have been pulled through a plastic coating 15 applied to the outer surface of the net, the knots being then retracted beneath the surface of the outer covering of plastic by the elasticity of the net fibres, and an inner coating 29 of plastic applied to the net to secure the knots and provide a smooth inner surface. The net 13, of cotton or nylon, is secured by adhesive tape 14 to an aluminium or copper mould 10, formed to the shape of the head, and painted or sprayed with plastic to build up the external coating 15 which is cured by the external or internal application of heat to the mould. Individual loops 23 of the net are drawn through the coating 15 by a hooked needle 19 and a hair 25 knotted to each loop. The inner coating of plastic is also applied by brushing or spraying and is heat cured on the mould.
Patent GB-798025-A (GB)
Title: Improvements in fishing reels
IPC: A01K89/01
Filed: 1955-10-20
Abstract: The whole of the subject matter of this Specification is included in Specification 798,024.
Patent GB-248853-A (GB)
Title: Improvements in economisers or feed water heaters
IPC: F22D1/20
Filed: 1924-12-15
Abstract: 248,853. Stirling Boiler Co., Ltd., and Mackay, H. J. S. Dec. 15, 1924. Feedwater, heating.-In an economizer or feedwater beater, having two upper and one lower drum connected by tubes, partitions are provided in the drums to compel the water to follow a zigzag course. In the two upper drums partitions g, h are provided, and in the lower drum a transverse partition k, and a longitudinal partition i extending from the partition k to the end of the drum are provided. The water is thus compelled to follow the course indicated by the arrows, so that a good heat exchange is obtained.
Patent GB-1475593-A (GB)
Title: Meter system for measuring the density of
IPC: G01N27/22
Filed: 1974-07-08
Abstract: 1475593 Electro-physical measurement - density AKADEMIA GORNICZO-HUTNICZA IM STANISLAWA STASZICA 8 July 1974 [9 July 1973] 30131/74 Heading G1N The density of material conveyed in a pipe line is detected by a capacitor sensor 1. The capacitor controls the frequency of an oscillator 2a which is compared with a reference frequency from oscillator 2c and the differencefrequency-signal is shaped at 2f .. 2k and integrated to provide a D.C. indicator signal. The signal is TEMPERATURE COMPENSATED in stage 3 controlled by a temperature sensor 4 in the pipe-line. COMPENSATION for CONDUCTIVITY of the mixture is provided by a stage 2b which maintains constant the amplitude of the output of oscillator 2a which would otherwise vary with conductivity.
Patent GB-904106-A (GB)
Title: Improvements in or relating to rectifiers
IPC: H01L23/488
Filed: 1960-09-01
Abstract: 904,106. Semi-conductor rectifiers. BOSCH G.m.b.H., ROBERT. Sept. 1, 1960 [Sept. 4, 1959], No. 30140/60. Class 37. In a rectifier comprising a semi-conductor of N-type Ge having an Sb concentration between 2.10<SP>-7</SP>% and 1.10<SP>-5</SP>% by weight, a PN junction is formed by alloying into the Ge a quantity of In having an initial purity of 99.999% and having added thereto Cu, in amount between 1.10<SP>-6</SP>% and 1% by weight. It is stated the enhanced forward conductivity of the rectifier due to the presence of Cu more than off-sets an increase in reverse current, to achieve a reduced operating temperature. The Cu may be added to the In during the alloying step or subsequently. The current density at the PN junction should not exceed 2A/sq. mm., and should preferably be from 0.5 to 1.0 A/sq. mm. In Fig. 1, a Cu cup 10, whose internal walls are covered with a Ni layer 15, is held in a graphite mould (not shown), and a tin foil 11 and a plate 12 of N-type monocrystalline Ge having an Sb concentration of 1.10<SP>-6</SP>% by weight are placed in the cup. A second graphite mould (not shown), which is then telescoped into the cup, receives in a central bore a pill 13 of In of 99.999% purity and a Cu wire 14, the end of which adjacent the In is pointed. The whole is then heated in a vacuum or inert gas to about 520‹ C. to alloy In into the Ge and to allow the dissolution and diffusion into the alloy zone of Cu atoms within the permitted concentration limits. When the device is cool it is sealed by a plate 16 and a resin filler 17. In a modification, Fig. 4, the In pill 13 is alloyed into the Ge plate 12 at about 550‹ C. while a coating of In is applied at the same temperature to the end face of a Cu pin 24 having the same diameter as the In pill. The said end face is next soldered to the In layer on the Ge plate at between 200‹ C. and 400‹ C., say about 300‹ C., in vacuo or an inert gas; during this stage Cu atoms, previously dissolved in the In coating, diffuse into the alloy zone. The cup 10 and the part of pin 24 external thereto may be provided with cooling ribs.
Patent GB-1137018-A (GB)
Title: Improvements in or relating to image intensifiers
Inventor: MANLEY BRIAN WILLIAM
IPC: G03B39/00
Filed: 1967-06-30
Abstract: 1,137,018. Image intensifier systems. MULLARD Ltd. 30 June, 1967, No. 30220/67. Heading H4F. [Also in Division H1]  An image intensifier tube of the type comprising a photo-cathode P arranged close to a channel intensifier device 1 the output of which is accelerated on to a fluorescent screen S, is used as a light shutter by using a switch SW to provide a positive or negative potential between the photo-cathode P and the input electrode E1 of the channel intensifier. The positive potential Bcl switching the device on should be between 25 and 200V, and the negative potential Bc2 switching the device off should be between- 10 and - 200V. In one example Bcl is 100V and Bc2 - 100V.
Patent GB-425465-A (GB)
Title: Improvements in and connected with the control of electrically ignited gas burners
IPC: F23Q9/08
Filed: 1934-10-22
Abstract: 425,465. Fluid - actuated valves. GAWA PATENT-VERWALTUNGS - AKT.- GES., Schaffhausen, Switzerland.-(Assignees of Frister Akt.-Ges., R. ; 63, Edisonstrasse, Oberschoneweide, Berlin) Oct. 22, 1934, No. 30228. Convention date, Oct. 21, 1933. Addition to 419,715. [Class 135] [See also Group XI] Valves controlled by pilot or relay valves.- In an igniting device for a gas burner installation as described in the parent Specification, the supply of gas to the electrically-ignited auxiliary jet h is cut off automatically after the jet has served its purpose as an intermediary in the ignition of the main burner o. As shown, the movement of a diaphragm a, produced by the starting of liquid flow in a pipe a<1>, opens valves q, b and closes the ignition circuit at contacts g<1>. Gas then flows from the main pipe c through pipes c<1>, d, f to the jet h, which is ignited by the igniter g. The movement of a thermostat i, heated by the jet h, vents a pipe k thereby operating a diaphragm l, which opens a valve m to supply gas by way of a pipe p and open valve q to the main burner, closes a valve e to extinguish the jet h, and breaks the ignition circuit at contacts t. The thermostat i is then heated by a jet u fed from the main burner or through a byepass from the pipe d.
Patent GB-1036356-A (GB)
Title: Improvements in or relating to m-type travelling wave tubes
IPC: H01J23/027
Filed: 1964-07-31
Abstract: 1,036,356. Travelling wave tubes. M-O VALVE CO. Ltd., A REDDISH, and D. W. WARD. July 2, 1965 [July 31, 1964], No. 30368/64. Heading H1D. In an M-type travelling wave tube there is provided, beyond the downstream end of the interaction space, a further space into which the electron beam flows which is bounded by electrode surfaces which may be maintained at potential such that there is established in the further space an electrostatic field having a form such that the electrons acquire appreciable components of velocity parallel to the magnetic field, at least one of the electrode surfaces being disposed to intercept electrons moving with such components of velocity. It is stated that this avoids the magnetic field preventing the electrons from reaching the collector electrode. In the backward wave oscillator described, the anode comprises copper member 2 and copper plate 6, which form an interdigital delay line 5. The sole electrode 12 is of molybdenum secured to posts 15 by alumina ceramic support 13, each pin 15 being brazed into a metal sleeve 16. The interaction space is formed by a gap between plates 6 and sole 12. At the downstream end of sole 12 is a molybdenum strip 17 forming an electrode surface and projecting into a blind circular cross-section hole 18 in member 2. Between hole 18 and delay line 5 is a copper plug 19. The electrons at the end of their trajectory turn at right angles into hole 18 where they are deflated by the electrostatic field formed by the potentials and the shape of the electrode surfaces formed by strip 17 and the interior of hole 18 so that they impinge on the interior of hole 18. As an alternative, the axis of hole 18 may be parallel to the interaction space.