baber/WOPTO huggingface dataset:
Patent GB-878924-A (GB)
Title: Means for protecting three phase electric systems
Inventor: WILLIAMS EDWARD KENNETH
IPC: H02H3/50
Filed: 1958-12-01
Abstract: 878,924. Protective cut-out arrangements. ROTAX Ltd. Nov. 25, 1959 [Dec. 1, 1958], No. 38617/58. Class 38 (5). An arrangement for protecting a three-phase system from line-to-line faults, line-to-neutral faults or an open-circuited line, comprises a resistor 4 connected through a full-wave rectifier 3 to the secondary windings 2 of a transformer, the primary windings 1 of which are connected to the three phases of the system. A capacitor 5 in series with a rectifier 7 is connected in parallel with the resistor 4, and the operating coil 8 of a relay 9 is connected across the rectifier 7. Under normal conditions the rectified voltage across the resistor will include a ripple having a frequency six times that of the system frequency. In the event of one of the faults referred to, the amplitude of the ripple increases and sufficient current flows through the capacitor 5 and rectifier 7 to cause operation of the relay to initiate a control operation and/or a warning.
Patent GB-369664-A (GB)
Title: A method and means of cooling vessels containing potable liquids or other substances
IPC: F25D7/00
Filed: 1930-12-24
Abstract: 369,664. Refrigerating ; moistening air. SOC. ANON. LE CARBONE, 37, Rue de Paris, Gennevilliers, Seine, France. Dec. 24, 1930, No. 38935. Convention date, March 21. [Class 29.] Refrigerating apparatus particularly applicable for cooling bottles of potable liquid &c. comprises a vessel containing a cylinder 3 of activated carbon impregnated with liquid and over and/or through which a current of air is forced by a fan 5. The liquid may be water, alcohol, or other volatile liquid, means being provided for recouping the volatile liquid. The Specification as open to inspection under Sect. 91 (3) (a) comprises also means for moistening air, e.g. for performing buildings, consisting of plates, balls, rods, &c. of activated carbon impregnated with liquid and over which the air flows. This subject-matter does not appear in the Specification as accepted.
Patent GB-1117485-A (GB)
Title: Improvements in or relating to shotgun cartridges
IPC: F42B7/12
Filed: 1965-09-13
Abstract: 1,117,485. Shot-gun cartridges. DYNAMIT NOBEL A.G. 13 Sept., 1965 [12 Sept., 1964], No. 39064/65. Heading F3A. An overshot wad 4 is made of synthetic plastics e.g. polystyrene, and has an upstanding rim 6 over which the mouth of the case is rolled. The rim may extend from both surfaces of the vad and one rim may be deeper than the other. The deeper rim is then bent over with the case to improve the seal. Alternatively an annular groove 9, Fig. 4, not shown, may be formed on one surface of the disc to receive the beaded edge of the case. The central part of the wad may be provided with a fracture line and with raised portions for identification of the cartridge contents. The discs may be coloured for identification. Reference has been directed by the Comptroller to Specifications 998,134 and 977,116.
Patent GB-395956-A (GB)
Abstract: 395,956. Closed solid-fuel stoves; cooking-stoves. RASANEN, I., 8, Folkskolegatan, Helsingfors. Jan. 19, 1933, No. 1832. [Class 126.] Boilers, arrangement of.-A stove comprises a brickwork-lined outer shell, a fuel-container 2 located at the back and feeding the combustion chamber by gravity, one or more downdraughtflues by which the gases pass to an outlet 5 at the base, and a water-heater 4a which is insulated from the combustion chamber in order that the cooling produced by it may not result in incomplete combustion. The insulating brickwork layer 9 may be in contact with the boiler, as shown, or spaced from it, air being admitted through this space to assist in consuming the gases. A pipe 10 conveys gases from the fuel-container 2 to the space below the grate. Fig. 4 shows a stove in which an oven 11 is mounted above the boiler, and the top 12 forms a hot-plate. The fire-door is preferably hollow for air circulation.
Patent GB-976078-A (GB)
Title: Wet spinning of acetic acid solutions of cellulose acetate
Inventor: RUSSELL JAMES
IPC: D01F2/28
Filed: 1963-10-08
Abstract: 976,078. Wet-spinning cellulose acetate. FMC CORPORATION. Oct. 8, 1963, No. 39662/63. Heading B5B. A solution of cellulose acetate having an acetyl value of 30-62.5% determined as acetic acid, in a solvent of which the major constituent is acetic acid is spun into filaments or films which are coagulated in a bath containing 10% to 65% by weight of acetic acid, and an aliphatic dihydric alcohol. The cellulose acetate spinning dope is preferably the acetylation mixture itself, e.g. a catalyst neutralized acid dope containing 8% to 15% by weight of cellulose acetate. Specified alcohols, which are non-solvents for the acetate, are ethylene glycol; tri-, tetra-, penta-, hexa-, and decamethylene glycols; 2,2-dimethyl-1,3-propanediol; 2,2,3,3 - tetramethyl - 1,4 - butanediol; 2 - butene - 1,4 - diol; 2 - hexene - 1,6 - diol; 3 - octene - 1,8 - diol; 2,2,5,5 - tetramethyl - 3- hexene - 1,6 diol; di -, tri -, and tetraethylene glycols; dipropylene glycol; 4,4<SP>1</SP>- dihydroxy - dibutyl ether and polyoxyalkylene glycols. The coagulated filaments may be subjected to a primary stretching of up to 10 times or more, which facilitates the production of fine denier filaments, and also to a secondary stretching. In examples, cellulose triacetate and secondary acetate spinning dopes, consisting of solutions of cellulose acetate in acetic acid, and made by acetylation of cellulose with acetic anhydride, are spun into coagulation baths consising of mixtures of glacial acetic acid and ethylene glycol, propylene glycol, and polyethylene glycols.
Patent GB-841210-A (GB)
Title: Apparatus for causing an upflow of air for the dispersal of fog or the like
IPC: A01G13/06
Filed: 1956-12-31
Abstract: 841,210. Fog dispersal. TRACY J. Dec. 30, 1957 [Dec. 31, 1956], No. 39681/56. Class 6(2). Apparatus for causing an upflow of air, for example to disperse fog or to disturb still, humid air comprises a hollow, tapering, towerlike structure 1 of circular cross-section, supported above the ground and housing a stationary propeller shaft 4. The structure 1 comprises a plurality of sections 3 of metal or synethtic resin whose walls thicken towards their upper edges to provide circular bearing surfaces 6 for wheels 7 attached to the outer ends of the blades of a plurality of propellers 5 rotatably mounted on the shaft 4. In operation, each propeller is driven independently by a motor 13 the nett result being that fog, for example, is driven into the lower end of the structure and discharged from the top. The structure is closed at the top and bottom by sheets 9 of wire mesh, and strengthening rods 8 extend between the walls of the structure and the shaft 4.
Patent GB-898058-A (GB)
Title: Improvements in or relating to the separation of hydrocarbon mixtures
IPC: C10G25/03
Filed: 1959-11-25
Abstract: In the regeneration of zeolitic molecular sieves which have been used to separate vapour mixtures of normally liquid adsorbable hydrocarbons with non-adsorbable hydrocarbons, non-adsorbed and surface adsorbed hydrocarbons are purged from the zeolite bed with a purge gas, before desorption to recover the adsorbed fraction is effected.  Purging is effected, preferably at a temperature equal or less than and not longer than for the first stage, with a normally gaseous medium such as isobutane or nitrogen, or by vacuum purging at 0 to 100 mm. Hg, and desorption is effected with for example n-butane or hydrogen.  Adsorption is generally effected at 0 DEG  to 600 DEG C., and is preferably discontinued before breakthrough.  The effluents from the purging and adsorption stages are combined.  In Example 1 a 25%/75% weight mixture of heptane and iso-octane is contacted with a 5  molecular sieve at 200 DEG C. purging is effected at 10 to 20 mm. Hg at 200 DEG  to 230 DEG C., and desorption is effected at 300 DEG  to 330 DEG C. with hydrogen.  In Example 2 a desulphurized light naphtha comprising C6-C9 hydrocarbons is contacted with a 5  molecular sieve at 250 DEG C., purging is effected at 250 DEG C. with nitrogen, and desorption is effected at 250 DEG C. with hydrogen.ALSO:The separation of mixtures of normally liquid adsorbable hydrocarbons with non-adsorbable hydrocarbons is effected by means of a zeolitic molecular sieve.  Non-adsorbed and surface adsorbed hydrocarbons are purged from the zeolite bed with a purge gas, before desorption to recover the adsorbed fraction is effected. Purging is effected, preferably at a temperature equal to or less than and for not longer than, the adsorption, with a normally gaseous medium such as isobutane or nitrogen, or by vacuum purging at 0 to 100 mm Hg. and desorption is effected with, for example, n-butane or hydrogen.  Adsorption is generally effected at 0 DEG C. to 600 DEG C. and is preferably discontinued before break-through. The effluents from the purging and adsorption steps are combined.  In Example 1 a 25%/75% weight mixture of heptane and isooctane is contacted with a 5  molecular sieve at 200 DEG C.; purging is effected at 10 to 20 mm Hg at 200 DEG C. to 230 DEG C., and adsorption is effected at 300 DEG C. to 330 DEG C. with hydrogen.  In Example 2 a desulphurised light naphtha comprising C6-C9 hydrocarbons is contacted with a 5  molecular sieve at 250 DEG C.; purging is effected at 250 DEG C. with nitrogen, and desorption is effected at 250 DEG C. with hydrogen.
Patent GB-1490551-A (GB)
Title: Method of fractionating oils and fats
IPC: C11B7/00
Filed: 1974-09-13
Abstract: 1490551 Fractionating oils and fats FUJI OIL CO LTD 13 Sept 1974 [14 Sept 1973] 40053/74 Heading C5C Oils and fats are fractionated by contacting a suspension of a solid higher melting fraction of an oil or fat in a liquid lower-melting fraction, the oil or fat containing free fatty acids, with an aqueous solution comprising an electrolyte (i.e. a neutral, water-soluble salt of a strong acid and/or a strong base) and a caustic alkali in an amount sufficient to provide, when contacted with the free acids in the oil or fat, a soapstock solution having a concentration suitable for fractionation, so as to give an intimate mixture, allowing sufficient time for a higher melting fraction to form a separate crystalline phase and then separating that phase from the lower melting fraction. In the Examples, crude palm oil is warmed and slowly cooled to precipitate out the crystalline portion and treated with a solution of sodium hydroxide and sodium chloride.
Patent GB-1086718-A (GB)
Title: Improvements in and relating to clay
IPC: C01F7/46
Filed: 1964-10-02
Abstract: An aqueous slurry of clay is bleached by adding first 0.7-5.6 lbs./ton of an alkali or alkaline earth metal or ammonium bisulphite or pyrosulphite, and then 0.125-1 lbs./ton of an alkaline borohydride, the temperature being held at 40-200 DEG  F. The slurry may contain 5-75% clay and is maintained at a pH of 2.5-5 by adding H2SO4.  Dispersing agents, e.g. phosphates, may be added.  Specified clays are kaolin, bentonite, and montmorillonite. The clay may be pretreated by dispersing in water with the aid of NaOH or Na hexameta phosphate, and removing the settled impurities.  The bisulphite, e.g. Na, K, Li or Mg, may be added in solid, slurry, or solution form. Pyrosulphite (e.g. Na2S2O5) if used is converted to normal bisulphite in situ.  The borohydride, e.g. Na, K, Li, or Mg, may be added as a solid, or in a solution containing NaOH or Na2CO3.  The process may be continuous or batch, and is carried out with mild agitation.  The treated clay may be washed with water and alcohols, and dried.
Patent GB-1501887-A (GB)
Title: Vacuum filtration
IPC: B01D19/00
Filed: 1975-10-01
Abstract: 1501887 Phosphoric acid; calcium sulphate RHONE-POULENC INDUSTRIES 1 Oct 1975 [3 Oct 1974] 40157/75 Heading C1A [Also in Division B1] In the production of phosphoric acid by reaction of calcium phosphate with sulphuric acid, resulting calcium sulphate is filtered off using a horizontal rotary filter subjected to vacuum and designed to separate gas from the filtrate and to collect separate portions of filtrate from a plurality of filtration zones (see Division Bl). Fig. 2 shows a method of operation wherein a circular filtrate collection channel (shown opened out longitudinally) is divided into four compartments 11, 12, 13 and 14 corresponding in number to four filtration zones of the filter. The compartments are separated by partitions, the partitions dividing compartments 12 and 11 and compartments 14 and 13 being of a height to allow overflow of contents from one compartment of each pair to the other at a certain level. Compartment 11 collects a first filtrate, diluted with water used for washing the filter gauzes in the prior sequence of operation, which is removed by line 21. Compartment 12 collects a strong acid fraction which is withdrawn by line 22 regulated by valve 26. The top-most portion of this fraction which is relatively most dilute overflows into compartment 11. Compartment 13 collects an intermediate strength fraction somewhat diluted by cake washing and this is withdrawn by line 23, combined with the fraction from compartment 11 and led to a treatment reactor via a flowmeter 28 which regulates valve 26. Compartment 14 collects a weak acid fraction diluted by cake washing which is recycled for use in cake washing by line 24. The uppermost portion of the fraction collected in compartment 14 overflows into compartment 13.
Patent GB-910939-A (GB)
Title: Improvements in or relating to the measurement of errors in, for example, gears in transmission systems
IPC: G01P3/56
Filed: 1958-12-12
Abstract: 910,939. Electric measuring systems. SYKES Ltd., W. E. Dec. 12, 1958 [July 7, 1958], No. 40226/58. Class 40 (1). A method of measuring errors in angular velocity ratio of a transmission system involves the use of rotary carriers bearng recorded magnetic traces, the recording on one carrier being produced by playing back the recording on the other carrier with the use of the transmission system. Gears 1, 2, errors in which are to be measured, are fixed on shafts 3, 4. A drum 6 rotated by a motor 7 bears two identical magnetic traces which are picked up by a fixed head 8 and a head 5 moving with shaft 3 which is constantly rotated. The difference frequency from these heads is derived in a mixer 13 and fed to heads 9 and 12 which, at this stage, are fixed and which record two traces on a drum 10 driven, at this stage, by shaft 4. Heads 9, 12 are now disconnected from mixer 13 and connected to the input of a mixer 15; head 12 remains fixed, but head 9 is rotated by shaft 4 and drum 10 is rotated by a motor 11. Thus a second difference frequency is derived in mixer 15. The two difference frequencies are equal and are independent of the speed of rotation of the motors 7 and 11. The phase relationship between the two difference frequencies is determined in a meter 16 and variations therein which are indicative of errors, are recorded by apparatus 17. If meter 16 is arranged to respond only to variations which occur at a lower frequency than the rate of rotation of the drums, then errors due to lack of uniformity in the records will be avoided.
Patent GB-1327052-A (GB)
Title: Apparatus for the electric control of machines
IPC: G05B19/07
Filed: 1970-08-21
Abstract: 1327052 Programmed control KRAUSSMAFFEI AG 21 Aug 1970 [25 Nov 1969] 40378/70 Heading G3N The adjustment of the set value of a temperature regulating circuit is effected by a disc 101 having a temperature scale 102. The disc is positioned by an electrical servomotor 108 which drives a gearing 114, 113 through a slipping clutch 107 which permits manual setting when the servomotor is de-energized. A shaft 110, secured to the disc 101, drives a potentiometer 103 the topped value of which is compared with that of a  programming resistor 104 in a bridge circuit and the error on lines 127a, 127 is fed to an amplifier 109, which energizes the winding of the servomotor so as to retro-actively position the disc at the setting of the resistor 104. The resistor 104 forms part of a programming unit 105 which is attached by plugs 115. A plurality of resistors can be selected by switches or set by a programming plate.
Patent GB-1363545-A (GB)
Title: Lifting apparatus for mobile carriers
IPC: B66F11/00
Filed: 1972-08-31
Abstract: 1363545 Fluid pressure apparatus acting through ropes; straddle carriers CKD PRAHA OBOROVY PODNIK 31 Aug 1972 40491/72 Headings B8B and B8H A lifting apparatus for raising and lowering two lifting jaws 10 of a mobile carrier comprises a pair of horizontal hydraulic rams which through an arrangement of pulleys 3, 4, 13, 14, 15 displace ropes 11, 12 connected between fixed points on the vehicle and the jaws 10, to raise and lower the jaws. Each cylinder 1 is anchored to the vehicle and the piston 2 carries two pulleys 3, 4 at its end, around which the ropes 11, 12 pass between their anchorages and the jaw 10, the ropes being guided by pulleys 13, 14, 15 freely rotatable on the vehicle. A rack 5 secured to each piston 2 drivingly engages an associated pinion 6, the two pinions 6 being drivingly coupled by a shaft 7 having brake discs 8 secured thereto. The discs 8 are each normally braked by a spring loaded pad which is hydraulically released as pressure is applied to the lifting rams to raise or lower the load carried between the jaws 10. In another embodiment a single ram is used with one rope being associated with each jaw.
Patent GB-1117168-A (GB)
Title: Methods of extracting water-soluble carboxylic acids from aqueous solutions thereof
Inventor: HARTEL HEINZ
IPC: C07C57/07
Filed: 1966-09-09
Abstract: Water soluble carboxylic acids are extracted from aqueous solutions thereof with a substantially water-immiscible aliphatic carboxylic acid.  The water-immiscible acid may be a straight chain, C6, saturated aliphatic acid for example, caproic, lauric, palmitic, stearic, octanic, isooctanic or isononanic acids or mixtures thereof. Acids extracted may be unsaturated such as acrylic and/or methacrylic and crotonic acids and the extracted acid may be partially separated from the extractant by distillation.  Inhibitors such as hydroquinone may be present during the distillation.
Patent GB-1323895-A (GB)
Title: Photographic camera
IPC: G03B15/04
Filed: 1970-08-24
Abstract: 1323895 Photographic cameras EASTMAN KODAK CO 24 Aug 1970 [23 Aug 1969] 40598/70 Heading G2A A photographic camera has a holder 4 for receiving a percussion ignitable flashlamp unit, e.g. a flashcube, and for locating a lamp thereof in a firing position, the camera also being provided with an actuating member 8, with a manually operable shutter releasing member 1 and with means engageable by the shutter releasing member 1 for directly transmitting the manual movement of the member 1 to the actuating member to fire a flashlamp located in the firing position in synchronism with operation of the shutter. In the absence of a flashlamp unit, a latch member 5 engages a pivoted lever 6 to hold the member 8 in a retracted position, and to hold a lug 6a out of the path of a shutter driver 2. Inserting a flash unit depresses a member 4a of the holder 4 to pivot the latch 5 and allow the lever 6 to turn clockwise (as seen), thus bringing an end of the member 8 into non-firing engagement with the striker(26a) Fig. 2 (not shown) of the lamp in the firing position. Movement of the lever 6 also brings the lug 6a into the path of the driver 2, and a projection 6b into the path of a member 7. Depression of the releasing member 1 moves a lug 1a, thus allowing the driver 2 to engage the lug 6a. Further depression of the member 1 causes pivoting of the member 7, thus causing further clockwise movement of the lever 6 to raise the actuating member 8 to fire the flashbulb. This further movement also moves the lug 6a out of the path of the driver 2 so that the shutter is operated in synchronism with the flash.
Patent GB-1485964-A (GB)
Title: Interlock for centre opening doors
IPC: B66B13/18
Filed: 1974-09-18
Abstract: 1485964 Controlling centre opening doors; fastening doors DOVER CORP 18 Sept 1974 [26 Oct 1973] 40613/74 Headings E2A and E2M In an arrangement of two centre-opening doors interconnected so that movement of one causes movement of the other, a latch is provided to lock each door in its closed position and a first latch operates a switch generating a signal indicating that a first door is locked; means being provided to prevent latching movement of the first latch to operate the switch when the second door is unlocked (e.g. should the connection between the doors be broken). Preferably the arrangement is one of lift hoistway doors 30, 30a slidable on a track 10; door 30 being powered by movement of the lift door and being connected by a cable 16 to move door 30a in unison. A lever 40 pivoted to door 30 has an arm 41 which carries a latch member 48 (engaging a catch 50) and a contact 46 which operates an interlock switch 44 to close the lift hoist circuit only when door 30 is latched. Lever 40 is connected by link 36 to a lever 28 pivoted to the door 30; vanes on the lift door engaging rollers 24, 26 as the lift door opens to turn lever 28 anticlockwise - unlocking the latch and opening the interlock switch. A further lever 52 is pivoted to track 10 at 54 adjacent the switch 44 and has a follower roller 60 which is engaged by a cam edge 72 on the door 30a as that door closes. When roller 60 is engaged, the lever 52 is pivoted so that a projection 66 enters a latching aperture 70 on the door 30a (Fig.5). A spring 78 biasses lever 52 to its unlocked position (Fig. 4) and in that position a projecting portion 76 on lever 52 prevents any downward locking movement of the lever arm 41. In addition when both doors are locked (Fig. 5) the projection 76 abuts the side of the arm 41 and lever 52 therefore cannot move to its unlocking position while door 30 is locked. In an alternative embodiment lever 52 is retained but does not carry the projection 66. Instead, arm 41 is elongated and is provided with a second latch member which engages the door 30a.
Patent GB-1011345-A (GB)
Title: Improvements in electron tubes
IPC: H01J21/20
Filed: 1963-10-15
Abstract: 1,011,345. Thermionic valves. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct.15, 1963 [Oct. 18, 1962], No. 40650/63. Heading H1D. A discharge tube having two triode or tetrode sections includes a capacitive connection between the support rod of the anode of one section and the support rod of a grid of the other section, adjacent where the two rods pass through the tube envelope, for neutralizing the capacitive coupling between the input and output circuits at high frequencies. The double-triode tube having grids 4, anodes 6, and a common cathode 7, includes capacitors 8 connected near the leadin pins 3, 5. The electrodes act as a Lecher system, decreasing the voltage developed across capacitors 8 as the operating wavelength decreases, thereby extending the frequency range of their neutralizing effect, e.g. to 100-500 Mc/s. Conventionally positioned capacitors 9 may be employed in addition.