baber/WOPTO huggingface dataset:
Patent GB-588417-A (GB)
Title: Improvements in or relating to thermionic valve circuit arrangements
IPC: H03K3/08
Filed: 1945-02-16
Abstract: 588,417. Pulse generating valve circuits. JELONEK, Z., ANDERSON, E. W., MACMILLAN, J. G., and McDERMOTT, T. J. Feb. 16, 1945, No. 4026. [Class 40 (v)] In a valve circuit for producing an abrupt wavefront under the control of a cyclically varying voltage, means are provided for developing a bias voltage proportional to the amplitude of the control voltage for application wholly, or in part, to the valve to determine the position of the wavefront independent of changes in the amplitude of the control voltage. In the Figure, valve V1 has screen and stippressor grids coupled by capacitor C1 in a transitron circuit. A negative sawtooth waveform is applied to the grids through a resistor to initiate transitron action and divert anode current to the screen grid when the potential of the suppressor grid falls to a critical value relative to the cathode potential. The resulting wavefront at the anode is differentiated by network C4, R7 to produce a positive strobe pulse, and the circuit reverts to its original condition when the input sawtooth waveform rises again to the critical valve, Diodes D1, D2 charge capacitors C2, C3 respectively to produce a steady voltage across potentiometer network R3, R4, R5, equal to the peak-to-peak amplitude of the sawtooth waveform, and a constant fraction of this voltage is applied to the grid of valve V1 to determine the cathode bias across R2 and stabilize the position of the strobe pulse against variations in amplitude of the sawtooth waveform. Resistors R3, R5 represent potentiometers tapping control voltages to further valve stages of a similar type in a multi-channel system producing a train of pulses spaced in time along the sawtooth waveform. These pulses may be time modulated by applying separate modulating voltages to the grids of each stage. Specification 588,416 is referred to.
Patent GB-1076123-A (GB)
Title: Heat treating furnace with circulated gas quench
IPC: F27B5/06
Filed: 1965-01-29
Abstract: 1,076,123. Heat treatment furnaces. H. N. IPSEN. Jan. 29, 1965 [June 12, 1964], No. 4067/65. Heading F4B. In a heat-treatment furnace of the type disclosed in Specification 934,335, the inlet and outlet ports 47, 48 in the inner work chamber 10 are closed by close fitting, retractable covers 60, 61, the said covers providing when open for unobstructed flow of non-oxidizing coolant gas through the said chamber. This gas is circulated by a fan 49 situated above the said outlet port 48 and within a chamber 34, in which are spaced coolant coils 58. During heating, the chamber 10 is evacuated, quenching gas being admitted for the cooling cycle through port 14. In a modification, Fig. 3 (not shown), the furnace is vertically disposed, with a hood outside the enclosure surrounding the said outlet port and containing additional cooling elements (125) so that said coolant gas is also cooled prior to reaching the said fan, thus enhancing its circulation and quenching action.
Patent GB-123834-A (GB)
Title: Improvements in and connected with Button Sticks.
Inventor: BLACKWOOD JOHN LAMB HAMILTON
IPC: A47L25/02
Filed: 1918-03-09
Abstract: 123,834. Blackwood, J. L. H. March 9, 1918. Cleaning buttons.-One strip of a pair; which are hinged together at one end to form a buttonstick, is formed with a series of transverse slots while the other strip is either a plain lever or is furnished with a longitudinal slot to receive all the buttons to be dealt with at one operation. Three constructions are described, in one of which a plate A, Fig. 1, is provided with transverse slots C in which the buttons are locked by moving a plain lever F into the position shown in dotted lines. A peg on the lever enters a hole G on the plate to hold the lever in the acting position. In the second construction, the plate A, Fig. 2, is provided with downwardly-extending stiffening ribs or corrugations A<1> and with a longitudinal slot H. The lever is fitted with an upwardly-extending corrugation F', and is provided with semicircular transverse slots D. In the third construction the longitudinal slot in the plate A, Fig. 8, is formed with transverse slots C<2>, and the plate co-operates with a plain lever similar to that shown in Fig. 1.
Patent GB-945815-A (GB)
Title: Improvements in or relating to tap-changing circuits
Inventor: HARTILL ERIC RAYMOND
IPC: H01F29/04
Filed: 1961-02-03
Abstract: 945,815. Regulating switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 16, 1962 [Feb. 3, 1961], No. 4173/61. Heading H2B. [Also in Division H1] In a tap changing arrangement (see Division H1) vacuum switches, A, B, C, D enclosed in vitreous or ceramic envelopes are operated by corresponding cams on a shaft 22 carrying a Geneva mechanism 24a driven through gearing 24 from a motor 26. The motor also drives shaft 20 carrying the selector mechanism 19.
Patent GB-906835-A (GB)
Title: Improvements in or relating to latching devices
IPC: E06C7/50
Filed: 1960-02-05
Abstract: 906,835. Hooks. THOMAS Ltd., MARTIN, and NICHOLLS, J. W. Sept. 20, 1960 [Feb. 5, 1960], No. 4180/60. Class 89 (2). For latching to a bar of a builder's staging, a hook is fixed to member 12 forming part of a strut, ladder or platform, e.g. by the press-fit of a hollow end 9, and has a finger 2 (with stopfaces 10, 11 for determining the extremes of its movement), pivoted to the hook on a pin 3 and urged by a leaf-spring 4 to the position shown, to latch the hook in position. The finger 2 is narrow compared to the hook, Fig. 2 (not shown), and moves in a slot in the latter, the slot extending from its one end 8 to the open end of the hollow portion 9 of the hook, fitted in the hollow member 12. The inner faces of the hook and finger 2 are shaped to a common circle and from pivot to free end the finger extends through 160 degrees to 200 degrees.
Patent GB-1373811-A (GB)
Title: Thermally controlled valve assembly
IPC: F16K31/68
Filed: 1972-01-24
Abstract: 1373811 Valves UNITED GAS INDUSTRIES Ltd 24 Jan 1972 [9 Feb 1971] 4244/71 Heading F2V A valve which may be used to control the flow of hot water to a radiator has a closure member 17 operated through thermally insulating push rod 11 by a temperature sensitive element 21. The latter is sealed by a bellows 22 and contains sulphur dioxide or the material known by the Registered Trade Mark "Freon" which expands to displace a plate 23 and the rod 11 against the resistance of an adjustable spring 24. A plastics material known by the Registered Trade Mark "Delrin", may be used for the rod 11 which abuts a spring loaded rod 12 carrying the member 17. A knob 32 prevented from moving axially by a flange 37 is used to rotate a nut 28 and adjust a spring abutment 26 when the temperature setting of the valve is to be changed. The knob is rotatable between positions determined by a fixed stop 34 and a stop 39, settable to three separate positions spaced at angular intervals of 120 degrees. The valve body 30 and a mounting ring 43 for connection to the valve seat 14 may be made from the material known by the Registered Trade Mark "Noryl".
Patent GB-782929-A (GB)
Title: Improvements in and relating to television apparatus
IPC: H04N5/18
Filed: 1955-02-14
Abstract: 782,929. Television. FERNSEH GES. Feb. 14, 1955 [Feb. 12, 1954], No. 4296/55. Class 40 (3). A clamp circuit for controlling the direct current component of a " negative modulation " television signal comprises a pair of diodes 3, 4 to which the signal is supplied with the synchronizing pulses extending in the positive direction and which are rendered non-conducting during retrace intervals by means of pulses supplied to the cathodes so that the grid of amplifier 6 is clamped at black level (i.e. earth potential) during the occurrence signals representative of the darkest point in the image which occurs during the picture trace periods but not during the occurrence of the black level during the retrace periods. If this point is not a " black " point the average level of the signal would be depressed so that white would be reproduced as grey and to prevent this a further diode 7, connected across the clamp 3, 4 and the cathode of which is positively biased, conducts when, due to the absence of a true black point during the picture trace period, the signal level drops below the level determined by the positive cathode bias such conduction preventing any further depression of the signal in the black direction. In a modification of the invention a single diode only (such as diode 7), which is not biased is employed and it is arranged (by adjustment at the transmitter) that the video signal potential during retrace periods is at a lower, adjustable, potential than that corresponding to picture black. With this arrangement the darkest image point occurring during picture trace periods is clamped to the black level if the potential representative of such point is higher than the potential occurring during retrace periods. When, in the extreme case of a white image area, the potential representative of the darkest image point is lower than that occurring during retrace periods the former potential can only rise until the latter potential becomes equal to earth potential. In a further arrangement only the diodes 3, 4 are employed and some of the lines of the picture (e.g. at the upper or lower margin) are scanned so that they have an adjustable " grey " value during the occurrence of which the diodes conduct. During the transmission of a " white " picture this " grey " level is clamped to the black level and black picture points, if any, are clamped to the black level as previously described.
Patent GB-718626-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B1/02
Filed: 1952-02-18
Abstract: 718,626. Reciprocating pumps. MEADER, C. W. Feb. 18, 1953 [Feb. 18, 1952], No. 4309/52. Class 102 (1). [Also in Group XXX] A pump installation for pumping semi-liquid substances comprises several power-actuated pumps each embodying a hollow cylinder 13 having an open end and operative, by axial movement, to cut into the material in chamber 8 to be pumped so that the cylinder takes in a charge of the material, a piston 15 movable in each cylinder to discharge the material through non-return valves 3, 4 to respective discharge pipes or a common discharge pipe. In the pump illustrated in Fig. 1, the cylinder 13 is actuated by a piston 16, subjected to fluid pressure, and the pump piston by a piston 19. When pressure fluid is applied to passage 24, the piston 16 engages collar 23 and moves both the pump piston 15 and cylinder 13 to the left. Pressure fluid is then applied to the passage 26 and moves the piston 16 to the right and finally pressure is applied to the passage 25 to move the piston 19 to the right. Fig. 2 illustrates a pump in which two pump cylinders 13, 13a are arranged in tandem and each cylinder is actuated by a piston 16, 16a with fluid connections .31 to the actuating cylinder 17. The two pump pistons 15, 15a are mounted on a common rod 20 provided with a collar 23 which is engaged by either piston 16, 16a. To economise in working fluid, ports 30 are provided in pistons 16 and 16a. The valves controlling the supply of working fluid are actuated cyclically. Specifications 666,903, 700,437 and 708,682 are referred to.
Patent GB-178075-A (GB)
Title: Stripper for punching machines
IPC: B21D45/00
Filed: 1922-02-14
Abstract: 178,075. Maschinenfabrik Schiess Akt.-Ges. April 15, 1921, [Convention date]. Punching. - A stripper a for a punching - machine is moved positively by the punch slide d until it engages the work t, then, being arrested, a spring- pressed roller o, mounted in the slide d, forces it to engage its teeth f with others on the casing c. On the return of the slide d a stud k thereof by the engagement of corresponding inclines m, n withdraws the stripper from the teeth g and lifts it from the work as shown.
Patent GB-900647-A (GB)
Title: Gas inflated bird scarer
IPC: A01M29/20
Filed: 1960-02-09
Abstract: A bird scarer comprises an inflated balloon of rubber or synthetic resin material modelled in the form of a bird of prey e.g. a hawk and attached to the ground by a wire.  Alternatively the scarer may comprise a model of a hawklike bird suspended from a balloon.
Patent GB-1010568-A (GB)
Title: Oil-soluble amine-carboxylic acid reaction products
IPC: C07D233/16
Filed: 1963-02-04
Abstract: A lubricating or fuel composition comprises a mineral lubricating oil or a mixture of a mineral lubricating oil and diesel fuel or gasoline containing an oil-soluble, nitrogen-containing composition prepared by heating to at least 100 DEG C. a mixture comprising an alkylamine, cycloalkylamine, aralkylamine, alkylene diamine, polyalkylene polyamine, cyclic polyamine (e.g. piperazine, imidazoline and derivatives thereof) or a derivative thereof containing hydroxy and/or further amino substituents, and an acid-producing compound which is an acid of the formula R.COOH or an anhydride or ester thereof, wherein R represents an unbranched, saturated aliphatic hydrocarbon radical having from 14 to 20 carbon atoms and bearing as a substitutent an aliphatically-substituted aryl radical.  Other specified ingredients are tetraethyl or tetramethyl lead, ethylene dichloride or dibromide, calcium and strontium salts of mahogany sulphonic acid, basic barium salts of didodecylbenzene sulphonic acid, alkaline earth metal salts of organic phosphorus acids, 2,6-dibutyl-4-methylphenol, 4,41 - methylene - bis - (2 - tert. - butyl - 6 - isopropyl - phenol), 2 - methyl - 6 - tert. - butyl - 4-heptyl-phenol, sulphurized heptylphenol and dipentene, the reaction product of turpentine and phosphorus pentasulphide, N,N1-dibutyl phenylenediamine, N - phenyl - naphthylamine and dibutyl tetrasulphide.ALSO:The invention comprises an oil-soluble, nitrogen-containing composition prepared by heating to at least 100 DEG  C. a mixture comprising an alkylamine, cycloalkylamine, aralkylamine, alkylene diamine, polyalkylene polyamine, cyclic polyamine or a derivative thereof containing hydroxy and/or further amino substituents, and an acid-producing compound which is an acid of the formula R.COOH or an anhydride or ester thereof, wherein R represents an unbranched saturated aliphatic hydro-carbon radical having from 14 to 20 carbon atoms and bearing as a substituent an aliphatically-substituted aryl radical.  The nitrogen-containing reaction product is a mixture of compounds containing amide, amino, amidino and cyclic amidino groups.  R.COOH is preferably xylyl-stearic acid but the aliphatic substituents may be methoxy groups or other alkyl radicals.  The cyclic amine reactants include piperazine, imidazoline and derivatives thereof.  The methyl ester of xylyl-stearic acid is prepared by heating a mixture of methyl oleate, xylene and aluminium chloride.
Patent GB-799905-A (GB)
Title: Improvements in or relating to insecticidal composition
IPC: A01N53/00
Filed: 1956-02-14
Abstract: An insecticidal composition adapted for use against house and garden insects by dispersing from a low-pressure system comprises at least about 5 per cent by weight of a toxicant, from 0.5 to 5 per cent by weight of pyrethrins, a synergist for the pyrethrins in the ratio of about 5 parts for each part of pyrethrins and the major proportion by weight of a volatile carrier consisting of a liquid boiling between 85 DEG  and 200 DEG  F., e.g. substituted or unsubstituted aliphatic hydrocarbons of less than 8 carbon atoms, aliphatic alcohols, ketones, ethers or simple aliphatic esters. An alternative composition comprises about 5 per cent by weight of a toxicant, from 0.25-1.75 per cent by weight of rotenone, from 0.5-5 per cent by weight of pyrethrins, together with a synergist and volatile carrier as in the composition above. Specified toxicants are methoxychlor (1,1,1-trichloro-2,2 bis [paramethoxyphenyl] ethane); "strobane," which is a mixture of chlorinated terpenes containing about 66 per cent chlorine; chlordane (octachlorodihydrocyclopentadiene), rotenone, DDT. Specified synergists are piperonyl butoxide [butyl carbitol] [6-propylpiperonly] ether.  Specified carriers are petroleum ether, isopropanol, a mixture of petroleum ether and methylene chloride, or a mixture of petroleum ether, methylene chloride and isopropanol, methyl acetate, chloroform, a mixture of ethanol and petroleum ether.  A propellant such as fluorotrichloromethane and dichlorodifluoromethane may also be incorporated.
Patent GB-1489411-A (GB)
Title: Builders scaffolding
IPC: E04G5/06
Filed: 1975-04-17
Abstract: 1489411 Scaffolding G K N MILLS BUILDING SERVICES Ltd 17 April 1975 [31 Jan 1974 (2)] 04557/74 and 04559/74 Heading E1S Scaffolding platforms are made up using deck elements 35 which extend between the ledges 13, 14 of a scaffold, and have cooperating portions at each end to engage the ledgers, the elements 35 being locked in position. In the embodiment of Fig. 6, slots in the underside of the deck element engage rims 18 on channel-sectioned ledgers, and plates 49 on the bottom of guard rails 41, supported by the scaffold uprights, are located above the ends of the deck elements to lock them in position. In the embodiment of Fig. 12, a platform is formed of deck elements 35 supported by ledgers 91, 95 extending between brackets 81 fixed to uprights 86, and in the embodiment of Fig. 15 by brackets 104 in the form of barriers around a ladder access point. In the embodiment of Fig. 19, brackets 130 for supporting a fan-board (see Fig. 20, not shown) are fixed to the uprights 134, the fan-board being formed in a similar way to the platforms referred to above, but being locked in place by devices (145) which engage the upper flange of a ledger (143). In Figs. 27-29 (not shown), alternative forms of deck element/ledger engagement are illustra ted, involving respectively channels (165, 166) extending into the ends of the deck elements and engaging the ledgers, on upstanding flange (167) on the deck elements engaging, e.g. a guard rail; a similar channel (169) extending into one end of the deck elements, and a rebate at the other end, with a further upstanding flange (173) for locking purposes; and deck elements held in opposed channels in ledgers (175, 176) by a shaped member (181) fixed to the lower edge of a guard rail (180). The scaffold transoms may be -supported directly by the uprights, or may be supported by the ends of the ledgers, via sockets (60) (Fig. 10, not shown).
Patent GB-928589-A (GB)
Title: Improvements relating to smokers' lighters and refill units therefor
Inventor: JOHN PHILIP HAROLD VICTOR CARL
IPC: F23Q2/52
Filed: 1959-02-10
Abstract: 928,589. Smokers' lighters. HOWARD WALL Ltd. May 9, 1960 [Feb. 10, 1959 ; Aug. 31, 1959], Nos. 4652/59 and 29664/59. Class 75 (3). The fuel chamber 20, Fig. 2, of a smoker's lighter is filled with liquefied gas from a refill unit 1, Fig. 1, by inserting a tubular nozzle 13 on the unit into a tubular portion 22 on the lighter and thereby causing a tube 17 mounted on a spring-urged member 15 in the nozzle 13 to pierce a self-sealing washer 7 closing the refill unit and also to pierce a self-sealing washer 26 sealing an inlet to the fuel chamber. The tube 17 then conveys the liquefied gas to the lighter. The self-sealing washers 7, 26 are rubber cylinders and are mounted between two annular surfaces. The sealed inlet to the fuel chamber is formed at the end of a tube 24 screwed into the tubular portion 22 of the lighter. A vent 27 in the tubular portion 22 is normally closed by a spring-urged resilient washer 28 having a tapered inner surface engaging a corresponding surface on the tube 24. The vent is opened during filling by the nozzle 13 of the refill unit. Also if the pressure in the fuel chamber becomes excessive the washer 28 deforms to open the vent. In another construction, Fig. 3 (not shown), the vent is formed in an inwardly bulged part of the tubular portion 22 and the resilient washer closing the vent is cylindrical. An annular stop limits the upward movement of the washer. In still another construction the vent is closed by a spring-biased pin which projects into the path of the nozzle of the refill unit. In another embodiment of the invention, Figs. 1,2 (not shown), accompanying the first Provisional Specification, the fuel chamber of the lighter is closed by a spring-urged valve and the refill unit has a sealed nozzle. An end of an adaptor is screwed or push-fitted on to the sealed nozzle and the other end of the adaptor is then screwed or push-fitted into a tubular housing for the spring-urged valve of the lighter. A tubular pin is slidably mounted in the adaptor. One end of the pin pierces the nozzle of the refill unit the other end engages packing on a tubular and thrust member of the lighter valve and opens the valve. Specification 887,471 is referred to.
Patent GB-1526182-A (GB)
Title: Process for dyeing synthetic fibre materials
IPC: D06P3/26
Filed: 1977-02-04
Abstract: 1526182 Dyeing synthetic materials with disperse dyes BAYER AG 4 Feb 1977 [7 Feb 1976 27 Feb 1976] 04678/77 Heading D1B Synthetic hydrophobic fibre materials are dyed with disperse dyes having carboxylic acid salt groups which groups are converted to free carboxylic acid groups by an acid donor which provides acid at the dyeing temperature, and are chosen from esters of phosphoric acid, phosphorous acid, phosphonic acid and phosphinic acid, and chloroacetamide. Wetting agents e.g. fatty alcohol of polyester, 2¢-acetate and polyamide sulphate may also be employed during dyeing materials, preferably at 90‹-140‹C.
Patent GB-850561-A (GB)
Title: Film projection control system
IPC: G03B17/38
Filed: 1959-02-11
Abstract: 850,561. Film projection control systems. ZEISS IKON A. G. Feb. 11, 1959 [Feb. 15, 1958], No. 4820/59. Class 97(1) A film projection control system has a system of cams 3 arranged so as to actuate a series of switches 14, 15, 16, 17 in a predetermined sequence, the switches being connected in electrical circuits controlling different processes in the film projection system, and additional switches in series or parallel with the first-named switches so arranged that operation of any of the latter by its respective cam can be rendered ineffective. In the arrangement shown, switches 14 and 15 are normally open, and 16 and 17 normally closed. The respective switch arms 4, 41 and 5, 5<1> are actuated by the cams 3 to initiate various operations such as rendering soundreproducing apparatus operative &c. Although switch arm 4 is closed by cam 3 to complete a circuit, the circuit can still be broken by the further switch 10, so that this can render the cam corresponding to switch 14 ineffective. Similarly with switch 16, which is normally closed, a parallel switch 12 can render its opening ineffective. Thus the programming of the system can be varied without re-setting the cams, but merely by operating the appropriate switches 10 .. 13. These may be arranged as time switches, and may be remotely controlled, and arranged to operate simultaneously in groups.
Patent GB-1120581-A (GB)
Title: Improvements in or relating to frozen fish pieces
IPC: A23B4/06
Filed: 1965-02-04
Abstract: 1,120,581. Cutting frozen fish. J. DAVIS. 31 Jan., 1966 [4 Feb., 1965; 4 Oct., 1965], Nos. 4861/65 and 41930/65. Heading A4C. Blocks of frozen fish are cut longitudinally into strips and each strip is then cut obliquely to form fish pieces of substantially diamond or romboid shape, at least two edges of each piece being inclined or chamfered. A rotary jig for the latter process comprises a series of channels 13 for the fish strips attached to a central carrier 11 rotating about shaft 12, the channels projecting outwardly at an angle which is tangential to the carrier and at the same time inclined away from the inner delivery end 14 to be at an acute angle to the jig axis. The strips of fish slide down against stop 18 and are cut by cutting means 15 which may comprise a band knife or saw or a rotary saw blade or disc. Holding means (not shown), e.g. spiked arms, are provided to retain the strips in the channels to prevent them falling out and released as the channels reach the cutting position. The strips may be urged toward the delivery end by weight or spring means.