baber/WOPTO huggingface dataset:
Patent GB-761820-A (GB)
Title: Process for the production of terephthalic acid dimethyl ester
IPC: C07C69/82
Filed: 1954-07-21
Abstract: Dimethyl terephthalate is prepared by reacting p-xylylene dichloride with nitric acid of medium concentration (40-65 per cent, preferably 50 per cent) in the presence of methyl alcohol. Preferably the nitric acid is added to the p-xylylene dichloride and the mixture is heated to a temperature above 100 DEG  C.  The methyl alcohol may be added dropwise during this heating or methyl alcohol vapour may be passed through the reaction mixture.  The yield is increased by adding phosphoric acid or sodium, potassium or calcium biphosphate to the reaction mixture, and also passing hydrogen chloride through the reaction mixture.  In examples: (1) hydrogen chloride gas is passed through a heated mixture of p-xylylene di-chloride and aqueous nitric acid to which methanol is added dropwise, dimethyl terephthalate together with small amounts of the methyl esters of p-aldehydobenzoic and p-chloromethylbenzoic acids being obtained; (2) as in (1) but adding phosphoric acid to the reaction mixture; (3) as in (1) but passing methanol vapour into the reaction mixture.
Patent GB-1111068-A (GB)
Title: Improvements in and relating to seals
Inventor: MORRIS PETER DOUGLAS CAMPBELL
IPC: F16J15/10
Filed: 1966-05-13
Abstract: 1,111,068. Liquid filter. STELLA-META FILTERS Ltd. 23 Feb., 1967 [13 May, 1966], No. 21374/66. Heading B1D. [Also in Division F2] Filters for treating beer are received into screwed seats 9 in a division plate 7 and sealed by seals 11 (Division F2), each filter comprising filter discs 1 clamped between the head 2 of a bolt 3 and a member 4.
Patent GB-1375321-A (GB)
IPC: A22C7/00
Filed: 1972-05-09
Abstract: 1375321 Compression moulding T REIFENHAUSER 9 May 1972 [14 May 1971] 21478/72 Heading B5A A predetermined volume of a material falls from a dosing chamber 1, fed from a hopper 8, to a space 2, and is compressed in a chamber 3 by a ram 4. A rotary cutter 7 moves laterally between the hopper and chamber to separate the said volume which rests on the ram, and remains in this position whilst the volume falls into the space and until the ram closes the outlet from the chamber. During the compaction the cutter is removed to allow a further supply of material to pass into the chamber and rest on the ram.
Patent GB-288082-A (GB)
Title: Improvements in resistance elements and method of assembling the same
IPC: H01C3/10
Filed: 1927-08-15
Abstract: 288,082. Campbell, H. E. Aug. 15, 1927. Couplings.-In an electric resistance of the type formed by slitting a metal plate from opposite edges and expanding it, rows of holes are formed near the edges of the plate between the slits through which insulated rods are passed to hold the plate in the expanded position. The plate 8 is slit and perforated as shown in Fig. 3 and expanded into the form shown in Fig. 1. Through holes 12 at the edge of the plate, pass rods 13, insulated from the plate by tubes 14 and secured at their ends to U-shaped bracket members 16 by nuts 17. The edges of the plate 8 may be prevented from cutting the tubes 14 by flanged thimbles 29, Fig. 6. In assembling the device, the plate 8 is placed between flanges secured to a plate at a distance apart equal to the width of the expanded plate, and therefore slightly less than that of the plate in its original state, and the rods 13 and tubes 14 threaded through the holes 12. The terminals are formed by flanged plates 20 bolted together over the ends of the plate 8 as shown, or over an intermediate portion. The plates 20 are formed with opposite slots 27, Fig. 6, through which pass rods 13, the edges 28 of the ends of the slots being turned up to embrace the rods. To the plates 20 are secured plates 23 with a V-shaped groove 24 to receive the conductor.
Patent GB-1101406-A (GB)
Title: An improved stud link chain and a method of manufacturing the same
IPC: F16G13/14
Filed: 1966-05-16
Abstract: 1,101,406. Chains. SOC. ANON. DE LA MANUFACTURE DE CHRINGS ET ANCRES DE SAINT-AMAND ETABLISSEMENTS SIROT MESTREIT ET DOREMIEUX REUNIS. 16 May, 1966 [11 Jan., 1966], No. 21562/66. Heading F2Q. [Also in Division B3. Each link of a heavy stud link chain, e.g. for large ships' anchors, comprises two unequal lengths of steel bar, the longer length 1, of round cross-seotion, forming the oval part of the link and being fixed at its ends to opposite sides of one end of the shorter length 2, which is of round or square cross-section and forms the stud, the other end of the length 2 engaging the centre of the length 1. In manufacture, the bars are heated to 600‹ C. and one end of the straight bar (1) is welded to one side of one end of the bar (2) at right angles thereto (Fig. 1, not shown). The bar (1) is then bent to its final oval form, at the same time being linked to the preceding link of the chain, and its free end welded to the other side of said one end of the bar 2, and the weld de-scaled. Fixing methods other than welding may be used, e.g. adhesive.
Patent GB-1168873-A (GB)
Title: Low Level D.C. Amplifier
Inventor: MOOREY ERNEST JAMES
IPC: H03F3/393
Filed: 1967-05-10
Abstract: 1,168,873. Chopper amplifiers. DYNAMCO Ltd. 30 April, 1968 [10 May, 1967], No. 21627/67. Heading H3T. A D.C. amplifier includes input networks R 1 , R 2 , Fig. 5, dividing an input signal at A between two (or more) channels each including an A.C. amplifier A 1 , A 2 , and choppers B, D and C, E which render the amplifiers A 1 , A 2  alternately conducting, one being D.C. restored while the other is conducting, and the outputs being combined at F. The choppers may be electromechanical but preferably they are transistors, B and C being IGFET's, and D and E being NPN transistors. The pair B, D is controlled by a square wave in antiphase to a square wave controlling the pair C, E. R 8 , R 9  are protection resistors. The two choppers associated with each amplifier A 1 , A 2  instead of being connected shunt-wise, may be connected serially in the signal path. In an amplifier arrangement (Fig. 6A, not shown), in which the amplifier of Fig. 5 drives a D.C. amplifier (20), the gain (27, Fig. 6B, not shown) from the input (K) to the amplifiers A 1 , A 2 to the output of the arrangement (20) is selected to be low at lower frequencies relatively to the overall gain (25) of the whole arrangement, measured from the input A, in order to reduce noise arising in the input stages to the amplifiers A 1 , A 2
Patent GB-1034321-A (GB)
Title: Mould operating mechanism
IPC: C03B9/353
Filed: 1965-05-21
Abstract: A split glass mould-operating mechanism comprises a pair of concentrically and vertically disposed drive shafts 11, 12 (Fig. 1, not shown), supported in bushings 17, 21, in a housing 10, for separate rotation about their common axis, the ends of the inner shaft 12 extending beyond the ends of the outer shaft 11, a mould arm 47, 44 (Fig. 2, not shown), fixed to each of the corresponding first ends 11g, 12b of the shafts and a split mould 49, 48 including first and second co-operating mould sections carried by the mould arms, there being a pinion 22, 26 affixed to each of the other ends of said shafts and racks 29, 36 reciprocated by motors 56, 61, meshing with each of the pinions.  The shaft 12 rotates within shaft 11 in a bush 21 and also by seating on a plate 19 within the housing 10.  The motors 56, 61 are fluid-actuated piston motors having inlet and outlets 57, 58, 66 and 67 (Fig. 3, not shown), and are identical. Inlets 57, 67 or 58, 66 are opened simultaneously.  When the mould sections are closed fluid enters through inlets 57, 67 such that a larger piston area is presented in motor 61 to that in motor 56, and the rack 26 associated with motor 61 is brought up against an adjustable limit stop 72.  To prevent overrun by rack 22 in the mould closed position a rod attached to said rack extends through the housing 10 into a cylinder 71 and has two lock nuts 68, 65 attached thereto.
Patent GB-504692-A (GB)
Title: Improvements in or relating to motion picture apparatus
IPC: G03B1/56
Filed: 1938-07-22
Abstract: 504,692. Kinematograph apparatus. KODAK, Ltd. July 22, 1938, No. 21772. Convention date, July 31, 1937. [Class 97 (i)] Two members are moved into engagement with the film, to form the film loops, by means associated with means to close the film gate and close the switch for the projector lamp ; the members automatically disengage the film after formation of the loops. As shown, rollers 22, 24 are respectively moved upwards and downwards, to form the loops, by clockwise rotation of a handle 92 from the position shown in Fig. I, to the position shown in full lines in Fig. 3. The shaft of the handle 92 carries a crank 90 connected by a link 88 with a bell-crank lever 75. The roller 22 is mounted on a spindle having a spring-extended end and carried by a pivoted arm 34 pressed downwardly by a spring. Movement of the handle 92 causes a portion 95 of the link 88 to engage the extended end of the spindle and to raise the roller 22 to form the loop; when the loop is of the desired size, a lug 96 engages the end of the spindle' to remove it from the portion 95, and permit the automatic return of the roller 22 to its original position. The lever 75 is connected by a flexible link 79 to a vertically sliding bar 56 carrying the spindle 55, Fig. 4, of the roller 24. Movement of the handle 92 lowers the roller 24 until the bent end 65 of a fixed plate 62 pushes a cylindrical projection 80 on the link 79 out of a circular opening 66 in the sliding bar 56. The bar 56, and roller 24, are then restored to their first positions by a spring 67, thus freeing the film loop. A pin 115, Fig. 1, on an arm moving with the lever 75 engages a vertical slot in an axially slidable lens mount 110 carrying a movable gate member (not shown), and moves the lens mount to close the gate as the loops are being formed. A bent spring 116 secured to the lever 75 and brought into engagement with the pin 115 permits movement of the movable gate member to allow the passage of a film splice. The arm 102 of a switch 103 controlling the projector lamp becomes engaged by a lug 100 secured to the link 88, as the handle 92 is turned, and is thrown thereby to compete the lamp circuit. The handle 92 &c. remain in the positions shown in full lines in Fig. 3, during projection, and a spring 106 returns the parts to the positions shown in Fig. 1, when the handle 92 is moved from the dead centre position of the crank 90. The film is threaded round an idle roller 20, a top sprocket 21, through the gate, over a sound roller 25 and a sprocket 27, to which it is held by rollers 26, 28, and thence over an oblique roller 29 to the take-up reel 16. Film is drawn from the supply reel 15 during the formation of the loops, and the sprocket 21 has a ratchet connection to its spindle to permit its rotation during the operation.
Patent GB-1535281-A (GB)
Title: Electric motor control system
IPC: H02P7/06
Filed: 1976-05-26
Abstract: 1535281 Automatic control INTERNATIONAL BUSINESS MACHINES CORP 26 May 1976 [31 May 1975] 21831/76 Heading G3N A D.C. motor is positioned within a first predetermined range about a desired position by D.C. energization and within a second narrower range by energization with pulses modulated in accordance with a signal indicating the position of the motor relative to the desired position. The pulses are width-modulated and the position-signal is derived from photo-electric arrangment and has a sign indicative of direction of motor travel. The transfer for D.C. energization to pulse is effected by a logic arrangement which also stops the motor when within the second range, by blocking the pulses.
Patent GB-904284-A (GB)
Title: Improvements in electric incandescent lamps
Inventor: MCLINTIC WILLIAM JAMES
IPC: H01K1/14
Filed: 1961-06-16
Abstract: 904,284. Filaments for incandescent layers. THORN ELECTRICAL INDUSTRIES Ltd. June 16, 1961, No. 21911/61. Class 39 (2). An electric lamp especially for projection has a grid 21 of closely-spaced sections 23 formed from a single continuously wound filament, the end sections 24, 25 of the grid being straight, the ends of the filament 26, 27 being in line with the end sections and plugged by threaded plugs 29, 30, whereby squirming on heating of the filament coil is avoided. The threading may be produced by winding the core wire 30 with a finer wire 31 to form a thread. The lamp comprises a cylindrical envelope having a screwed cap and as internal glass press supporting wires 13, 14 which act as leading-in wires and also as supports for the filament. Upper and lower insulating bars are supported by brackets on the wires 13, 14 and carry sets of supporting hooks 19, 20 engaging in loops 22 formed by a single turn of the filament between each pair of adjacent filament sections 23. The grid may be of biplane form. In a modification, the end sections 24 and 25 of the grid are inclined away from the sections 23 but are maintained in alignment with the ends 26, 27.
Patent GB-136314-A (GB)
Title: Improvements in and relating to Mechanical Hammers.
Inventor: HAGE RUDOLF ALEXANDER
IPC: B21J7/12
Filed: 1918-12-31
Abstract: 136,314. Hage, R. A. Dec. 31, 1919. Power hammers.-A mechanical hammer in the form of a circular disk is given a combined reciprocating and rolling or circular motion by means of a power-driven shaft provided with one or more projections which give the combined motions to the hammer by engaging in eccentric holes in the hammer or in an intermediate member in which the hammer can slide. As shown in Fig. 1, a hammer 1 is arranged to operate on a chisel mounted in a sleeve 7 in the frame 6, in which is mounted a power shaft carrying two disks 4, between which the hammer 1 is mounted and which are connected by three pins 3 engaging eccentric recesses 2 in the hammer. The rotation of the disks 4 imparts a combined reciprocating and rolling motion to the hammer 1. In a modified form, Fig. 6, a fixed eccentric cylindrical member 18 constrains the outward motion of the hammer 1, and four pins and recesses are provided. In a further modification, the pins 3 are so arranged that the circle which passes through their centres is eccentric to the disk or disks 14, instead of concentric as shown in Fig. 1. In a further modification, Fig. 4, the hammer 1 has an opening 12 eccentric to a pin 11 on a disk 10 carried by the driving-shaft 5. The hammer 1 is provided with a guide 17 moving in a slot 16 in a disk 9, which rotates with the disk 10, but can slide relatively thereto in a direction at right-angles to the slot 16, a pin 14 serving to guide the disk 9 in this sliding motion.
Patent GB-1357161-A (GB)
Title: Laundry apparatus and method including continuous washing ex tracting and drying
IPC: D06B3/30
Filed: 1971-04-19
Abstract: 1357161 Endless conveyers for laundry articles F W GRANTHAM 19 April 1971 [4 March 1970] 22015/71 Heading B8A [Also in Divisions D1 and F1] A device for loading a belt conveyer 162 with laundry articles comprises a pair of opposed grippers on levers 146, 156 which are relatively movable by a ram 136, the lever 146 being pivotable by a ram 134 about a further lever 122 which in turn is pivotable by a further ram 132 relative to a frame of a laundry washing apparatus (see Division D1). In a modified loading device (Fig. 15) a plurality of members 156a to 156d are provided separated by coil springs of different stiffnesses so that the pairs of grippers are closed and opened in sequence.
Patent GB-1279787-A (GB)
Title: Arrangement for the switching of reed contacts
IPC: H01H36/00
Filed: 1971-04-19
Abstract: 1279787 Movable magnet switches INTERNATIONAL STANDARD ELECTRIC CORP 19 April 1971 [20 Feb 1970] 22027/71 Heading H1N A magnetic switch suitable for push-button operation has two sealed magnetic reed contact units 1, 2, arranged with their longitudinal axes in one plane and parallel to each other and with a stationary permanent magnet 3 magnetized transversely to the said plane and located to one side thereof so that it has one pole face adjacent one reed 5, 6 of each contact unit. The other reeds are influenced by a permanent magnet 4 in the form of a bar lying within the plane between the reeds and polarized normal to the reed unit axes so that each reed is adjacent one pole face. A reotilinearly movable U-shaped member 15 has permanent magnets 13, 14 at its ends polarized normal to said plane so that movement along their magnetic axes effects rotation of the magnet 4 which is biased by a helical spring 17.
Patent GB-735976-A (GB)
Title: Improvements in supporting and driving means for cooling fans in motor vehicles
IPC: F16C35/077
Filed: 1953-08-10
Abstract: 735,976. Cooling motors. HUMBER, Ltd., and COY, E. W. Aug. 10, 1953, No. 22030/53. Class 79(3). [Also in Group XXXIV] A driving shaft 14 of a cooling fan in a motor vehicle is journalled in ball bearings 20, 21 mounted in a sleeve 22 which is slidably supported in a bracket 23 secured to the vehicle frame. Relative rotation between the sleeve 22 and bracket 23 is prevented by a screw 24 engaging a slot 25 in the sleeve 22. A greaser 27 supplies lubricant to the bearings 20, 21 and to grooves 28, 30 in the periphery of the sleeve 22. One end of the shaft 14 carries a flange 26 to which the fan is secured and the other end is connected to the engine pulley by means of a shaft 13 and universal couplings 10, 16. In modifications, the sleeve 22 may be omitted, plain bearings may replace the ball bearings, or the ball bearings may be fixed in the housing and a sleeve provided which is slidably but not rotatably mounted on the shaft. Specification 648,117 is referred to.
Patent GB-1165762-A (GB)
Title: Gas Taps
Inventor: ELWELL-SMITH RONALD
IPC: F16K5/10
Filed: 1967-05-12
Abstract: 1,165,762. Valves. PARKINSON COWAN Ltd. 10 May, 1968 [12 May, 1967],No. 22113/67. Heading F2V. A gas tap has a metal or plastics sleeve 19 loosely keyed on to a spindle 1 by a diametric pin 23 through the spindle engaging opposed slots 22 in the sleeve. A detent 18 on the end of a hairpin-like spring 24 engages in a notch or set of notches 26 in the periphery of a flange 21 of the sleeve to define intermediate or simmering positions of the tap. The flange 21 has a second set of notches which, if the tap is to be used with a different gas requiring different intermediate positions, can be brought into engagement with the detent 18, instead of the first set, by rotation of the sleeve about the spindle when the pin 23 has been disconnected from slots 22. The notches may be provided in the face of the flange 21 and the spring 24 may engage the flange 21 with both legs to balance the forces on the sleeve. The flange 21 axially abuts a plate 7 fixed to the valve body 8 in which is rotatable a tapered plug 9 that is actuated by the knob 2 through lugs 4 on a disc 3 fast with the spindle 1 engaging in slots 10 of the plug. A lug 5 on the disc 3 engages stops 17 pressed from plate 7 to limit the angular movement of the knob and slots 15 to lock the spindle in the end positions, the lug 5 being moved out of the slots 15 by pressing the knob against the force of spring 16 to move the disc 3 axially.
Patent GB-1368053-A (GB)
Title: 3,4-dihydro-4-oxo-quinazolino/thiono/-phosphoric/phosphonic/-acid esters and esteramides process for their production and their use as insecticides or acaricides
IPC: C07F9/6512
Filed: 1973-05-09
Abstract: 1368053 Pesticidal phosphorus-containing quinazoline derivatives BAYER AG 9 May 1973 [10 May 1972 9 Nov 1972] 22139/73 Heading C2P Novel compounds of Formula I where R is C 1-6  alkoxy or di(C 1-6  alkyl)amino, R 1  is C 1-6  alkyl, alkoxy, alkylthio or monoalkylamino, di(C 1-6  alkyl)amino or phenyl, X is halogen, Y is oxygen or sulphur and n is 0 to 4 may be prepared by reacting a compound of Formula II in the presence of an acid-binding agent or in the form of an alkali metal, alkaline earth metal or ammonium salt with a compound of Formula III where Hal is halogen. The starting material, O-ethyl-O-propylthionophosphorochloridate, may be prepared by reacting O-propylthionophosphorodichloridate with ethanol in the presence of a tertiary base. The compounds of Formula I have pesticidal properties and may be used as the active ingredients in conventional pesticidal compositions for combating insects and acarids (including ectoparasites).
Patent GB-864319-A (GB)
Title: Indicator element for roadways or the like
IPC: E01F9/08
Filed: 1958-07-10
Abstract: 864,319. Road signs. CHAILAN, A. July 10, 1958, No. 22161/58. Class 3(2) [Also in Group X] A road marking block of moulded plastic is of box-like form open on the underside and provided with a perforated peripheral flange 6. The upper face of the block may be corrugated. The block may be provided with a sign and may be coated with fluorescent or reflecting paint.
Patent GB-1367407-A (GB)
Title: Resistance welding machine
IPC: B23K11/26
Filed: 1972-05-11
Abstract: 1367407 Supply circuits for welding machines GOSUDARSTVENNY VSESOJUZNY ORDENA TRUDOVOGO KRASNOGO ZNAMENI NAUCHNO-ISSLEDOVATELSKY TEKHNOLOGICHESKY INSTITUT REMONTA I EXPLUATATSII MASHINNOTRAKTORNOGO PARKA 11 May 1972 22223/72 Heading H2H A supply circuit for a resistance welding machine comprises a transformer 16, a capacitor 7 having a switch T1 in its charging circuit and a switch T3 in its discharging circuit, a capacitor 8 having a switch T2 in its charging circuit and a switch T4 in its discharging circuit, and control units 22, 23 for the switches so that the capacitors are alternately charged and discharged through a respective winding portion of the primary winding 15 of the transformer. The switches comprise thyristors T1-T4 and the capacitor 7 is charged via a rectifier bridge 1 and a current limiting resistor 4 when the unit 22 supplies a trigger pulse to switch on the thyristor T1. Each unit 22, 23 includes a reference voltage source and when a voltage signal from a potentiometer 24 connected across the capacitor 7 exceeds the reference voltage, the unit 23 triggers the thyristor T2 to switch off the thyristor T1 and enable the capacitor 8 to charge and also triggers the thyristor T3 to enable the capacitor 7 to discharge through the primary winding of the transformer 16. A welding pulse is therefore supplied to welding rollers 27 between which an article 26 to be welded is positioned. When the voltage across the capacitor 8 exceeds the reference voltage the control unit 22 switches on the thyristors T1 and T4 to enable discharge of the capacitor 8 through the welding transformer. The resistor 4 may be replaced by a choke.
Patent GB-479776-A (GB)
Title: Improvements in and relating to dry cleaning
IPC: D06L1/10
Filed: 1936-08-12
Abstract: In a dry-cleaning process in which an organic solvent is alternately humidified and dehydrated, for the removal of water-soluble and then greasy stains, the step of dehydration is effected in a filter which removes finely divided and colloidal water.  The filtration step includes contacting the hydrated solvent with bentonite, calcium chloride or similar good water adsorbent.  Unless this colloidal water is removed the finished clothes appear dull and hazy.  Naphtha, gasoline, carbon tetrachloride or trichlorethylene is circulated by a pump from a washer through a filter back to the washer.  A filter aid such as fuller's or diatomaceous earth is introduced into the solvent at the washer, whereby the filter is pre-coated.  Bentonite, calcium chloride or a mixture thereof is then introduced and the circulation of solvent is repeated.  Water-repellent substances such as paraffin wax, glycerides or esters, as described in Specification 437,491, are then incorporated and the clothes are treated therewith in the washer.  Grease and dirt are removed, the latter being retained in the filter preferably pre-coated with bentonite or the calcined diatomaceous earth sold under the Registered Trade Mark "Hyflo Supercel."  Water is then dispersed in the solvent with the aid of such agents as alcohols, ethanolamine or cyclohexanol.  Extraction of water-soluble stains from the clothes is then effected and finally the solvent is dehydrated as in the first stage.