baber/WOPTO huggingface dataset:
Patent GB-960028-A (GB)
Title: Chromatographic columns
IPC: B01J20/281
Filed: 1962-05-02
Abstract: In using a gas chromatographic column of the type wherein the partitioning agent is a stationary liquid phase retained on the surface of an inert supporting material, sharp peaks on the chromatograms are obtained by adding a surface active agent to the stationary liquid phase.  This surface active agent serves the dual purpose of bonding the stationary liquid phase to the inert supporting material and deactivating any active polar sites on the supporting material.  The surface active agent used may be anionic, cationic or nonionic.  Anionic agents specified are sarcosines of the general formula RnCON(CH3).CH2CO2H (Rn denotes a long hydrocarbon chain having n carbon atoms along the chain) or their sodium salts, N-lauroylimidodiacetic acid, and tetrapropenylsuccinic anhydride. Cationic agents specified are the N,N-dimethyl amides of long chain fatty acids, tetrapropenylsuccinimide, and oxazolines; and the non-ionic agents specified are polyglycols which are partially esterified with long chain fatty acids.  Four examples are given, illustrating the use of surface active agents in columns using squalene as the stationary liquid phase, for separating mixtures of ethyl alcohol, methyl ethyl ketone, benzene and cyclohexane. Specification 834,390 is referred to.
Patent GB-130851-A (GB)
Title: A One-hand Archimedean Drill.
Inventor: POOCK ALFRED GRAHAM
IPC: B23B51/02
Filed: 1918-10-17
Abstract: 130,851. Poock, A. G. Oct. 17, 1918. Hand and breast drills.-The rear end of the screw of an Archimedean drill is reduced to fit the bore of a cylinder E which is secured thereon looselv so that it can rotate. The cylinder fits the bore of the handle and guides the rear end of the screw, a helical spring F causing motion on release of the pressure.
Patent GB-198915-A (GB)
Title: Improvements in compressors
IPC: F04B49/16
Filed: 1922-06-20
Abstract: 198,915. Marks, E. C. R., (Ingersoll- Rand Co.). June 20, 1922. Channels in valves. - Lubricating grooves k are formed in the cylindrical body of a valve controlling the clearance space of a compressor. Specifications 12610/12 and 12611/12, [both in Class 8 (i), Air and gases, Compressing &c.], are referred to.
Patent GB-280613-A (GB)
Title: Improvements in or relating to the manufacture of organic compounds of arsenic
IPC: C07F9/80
Filed: 1926-07-08
Abstract: 280,613. Newbery, G., and May & Baker, Ltd. July 8, 1926. Samples furnished. Aryl-1 : 4-isoxazine arsenic compounds are prepared by reduction of an arylarsinic acid containing nitro and oxyacetic acid groups in adjoining positions in the aryl nucleus. With mild reducing agents only ring formation occurs, but under other reduction conditions the starting material may be reduced, with or without isolation of the intermediate products to the corresponding arsenious oxide, arsine halide or arseno compound. The products possess therapeutic properties. According to the examples, (1) 2-nitro-phenoxyacetic acid-4-arsinic acid is reduced with alkali ferrous hydroxide to 3- hydroxy-1 : 4-benzisoxazine-6-arsinic acid; reduction of the latter with sodium hydrosulphite yields 6 : 6<1>-arseno-bis-(3-hydroxy-1 : 4-benzisoxazine) ; (2) reduction of 6-acetylamino-2-nitro phenoxyacetic acid-4-arsinic acid under the conditions of (1) gives first 8-acetylamino-3-hydroxy- 1 :4-benzisoxazine-6-arsinic acid and then 6 : 6<1>- arseno - bis-(8-acetylamino-3-hydroxy-1 : 4-benzisoxazine). Instead of alkaline ferrous hydroxide, glucose in an alkaline medium may be employed, whilst hypophosphorous acid may replace sodium hydrosulphite. The Provisional Specification states that by the use of sodium bisulphite or sulphur dioxide in presence of hydriodic acid, the arylisoxazine-arsinic acid is returned to the corresponding arsenious oxide. which may be isolated as such or precipitated as the hydrochloride of the dichlorarsine compound by the addition of hydrochloric acid. O-Nitroaryloxyacetic ocid arsinic acids are obtained from phenolarsinic acids by the known method of preparing phenoxyacetic acids from phenols by treatment with an a-halogenated acetic acid, the nitro group being introduced with the phenolarsinic acid before or after this treatment. Thus, 6-acetylamino-2-nitro-phenoxyacetic acid-4-arsinic acid is prepared by nitrating 3-acetylamino-4-hydroxyphenylarsinic acid and treating the resulting 5-nitro compound with chloracetic acid.
Patent GB-840916-A (GB)
Title: Polymerization of ethylene
IPC: C08F10/00
Filed: 1958-05-29
Abstract: Ethylene is polymerized by means of a catalyst which comprises a borohydride (preferably of an alkali metal e.g. N, Na or Li), AlX3 (X = halogen, preferably Cl) and a Group IVa metal halide preferably TiCl4.  Polymerization is preferably carried out in an inert solvent for ethylene such as a hydrocarbon which may be aromatic (e.g. benzene, toluene, xylene), aliphatic (e.g. dodecane) or cycloaliphatic (e.g. cyclohexane, decahydronaphthalene); it is preferable, when using a solvent, to pass a stream of ethylene continuously and to agitate the reaction mixture vigorously, and unreacted ethylene may be recovered and returned to the reaction. The polytthylenes produced have m.p.s. in the range 125-170 DEG  C., the m.p. being defined as the p  temperature at which a sample begins to become clear and lose its crystallinity.  The reaction is quenched with methanol and the polymers purified by means of dilute aqueous KOH, dilute alcoholic KOH, water and methanol.ALSO:A catalyst for ethylene polymerization comprises a (preferably alkali) metal borohydride (e.g. of Na, K or Li), an Al halide (preferably chloride) and a halide of Ti, Zr, Hf or Th (preferably TiCl4).  Preferably the catalyst is formed in an inert liquid (particularly a hydrocarbon especially when cyclic e.g. xylene) which is a solvent for ethylene, in the absence of free oxygen and in a nitrogen atmosphere; particularly a mixture of borohydride and Al halide is heated in the solvent at 60-110 DEG  C. for at least 30 minutes before adding the second metal halide. The preferred molar ratio AlCl3: TiCl4:NaBH4 is 0.1-1:0.1-1:1.  Optionally, the catalyst may be deposited on a carrier such as cryolite, clays, silica-alumina cracking catalysts and charcoal and the deposition may be carried out in e.g. xylene or decahydronaphthalene.
Patent GB-1462323-A (GB)
Title: Catalytic reforming with a catalyst comprising a noble metal deposited in silica dispersed in an alumina matrix
IPC: C10G35/085
Filed: 1975-04-25
Abstract: 1462323 Reforming catalyst TEXACO DEVELOPMENT CORP 25 April 1975 [10 June 1974] 17179/75 Heading C5E [Also in Division B1] The octane number of a paraffin-containing gasoline blending component is increased by hydroreforming in the presence of a catalyst comprising a noble metal-on-silica dispersed in an alumina matrix, the catalyst comprising 0À01-1% wt. noble metal and 5-30% wt. alumina. The noble metal is suitably platinum or palladium and the catalyst can also contain up to 1% rhenium. The feedstock may be a heavy straight run naphtha, light straight run naphtha or raffinate. Reforming conditions specified include 500-1100 F, 25-900 psig, a gas rate of 500-10,000 SCFB and a space velocity of 0À2-10À0.
Patent GB-811987-A (GB)
Title: Improvements in or relating to refractory material
Inventor: AUSTIN LESLIE WENTWORTH
IPC: C04B35/42
Filed: 1956-06-04
Abstract: A non-fused crystalline refractory material consists essentially of agglomerated intergrown crystals of periclase and at least two magnesia spinels in amounts calculated as from 10 to 50 per cent. of periclase and from 50 to 90 per cent. of magnesia spinels, the proportion of lime being not over 2 per cent. and of total impurities 5 per cent., the surfaces of the periclase and spinel crystals at least partially abutting upon and bonding directly to the surfaces of contiguous crystals.  The process for making the refractory material is similar to that given in Specification 811,986 by firing an admixture at a temperature of at least 1600 DEG C. but without fusion for at least one-half hour. Reference is made to the related matter of Specifications 811,985 and 811,986.  Specifications 607,909 and 639,581 also are referred to.
Patent GB-434840-A (GB)
Title: Improvements in or relating to bracket mountings for hose reels
IPC: B65H75/44
Filed: 1934-06-12
Abstract: 434,840. Hose reels. DIXON & SON, Ltd., S., and GIRDLER, A. L., 20, Swinegate, Leeds. June 12,1934, No. 17329. [Class 99 (ii)] A hose reel 3 is mounted on a wall bracket 1, e.g. of inverted U -shape, which is provided with a pendulous arm 4 having a rotary or swivelling eye 6 at its lower or free end for guiding the hose as it is drawn off the reel. The arm 4 is pivoted on a stud 5 as shown so as to swing freely in a plane parallel to the plane of rotation of the reel, and the eye 6, which may be provided with antifriction rollers 7, is preferably adapted to turn about an axis parallel to that of the reel.
Patent GB-1305091-A (GB)
IPC: G01N29/04
Filed: 1970-04-13
Abstract: 1305091 Measuring thickness of coatings B ZUMBACH [trading as ZUMBACH ELECTRONIC-AUTOMATIC] 13 April 1970 [23 April 1969] 17344/70 Heading G1N The thickness of a layer on a metallic object, e.g. the insulation of a cable conductor, is detected by a sensor which bears against the object and provides an output which is compared with a reference, the difference being indicated as a measure of the thickness, the system being initially zero balanced in two conditions, one in which the sensor is outside the range of influence of a reference object, e.g. a metallic object identical to the cable core, and the other in which the sensor is placed a known distance from the reference object, e.g. a nominal layer thickness. As described, the sensor is an A. C. energized coil arranged to influence the frequency f 1  of an oscillator, the reference being the frequency f 2  of an oscillator 28, a mixer 27 being provided to influence an indicator 29 via a discriminator (not shown). In one embodiment, the coil is first arranged outside the influence of the reference object 23 and the frequency f 1  is adjusted automatically via an amplifier 35, servo 36 and potentiometer 34 until f 1  = f 2 . The coil is then arranged a known distance from the object 23 so that f 1  changes, the frequency f 2  then being adjusted via potentiometer 38 and switch 37 until f 2  = f 1 . In a first alternative, the coil is first arranged a known distance from the object 23 and f 1  is adjusted until it equals f 2 , the coil then being arranged outside the influence of the object and f 2  adjusted until it equals f 1 . In a second alternative, the switch 37 may be arranged to switch between the potentiometer 34 and a reference source and the oscillator 28 is then permanently connected to potentiometer 38. The coil is then first arranged outside the  influence of the object, the switch being connected to the reference source and f 2  being adjusted until it equals f 1 . The coil is then arranged a known distance from the object and, with the  switch connected to the potentiometer 34, f 1  is adjusted until it equals f 2 . After balancing by any of these methods, the indicator may be calibrated by arranging the coil known distances from the reference object 23. For this purpose, the coil and its holder are  arranged on a slide having a measuring scale, Fig. 1 (not shown). The coil holder is arranged in a casing which is fixed in a reference position on the slide, the casing having a prismatic groove which receives and positions the object in use. After balancing and calibration, the coil holder and casing is removed and hand held to investigate layer thickness of objects. Periodically, the coil is removed from the influence of an object and is rebalanced by adjusting one of the frequencies until it equals the other.  The coil holder may be arranged on a ring structure which is rotatable around an object to be investigated, as described and claimed in  Specification 1305092.
Patent GB-581547-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L9/28
Filed: 1944-09-12
Abstract: 581,547. Suction cleaners. HOOVER, Ltd. Sept. 12, 1944, No. 17375. Convention date, Sept 24, 1943. [Classes 8 (i) and 8 (ii)] In a suction cleaner comprising a fan 22, Fig. 1, a preliminary dirt separator 11, a final filter 33 and movable means for cleaning the filter and returning dirt therefrom to the preliminary separator, movement of the filter-cleaning device is derived from a turbine 51 driven by air from a suction-creating fan. The turbine-driving fan may be the main fan 22 but is preferably a second fan 38. The turbine 51 is mounted on a shaft 56 carrying a friction ring 58 adapted to engage a solenoid-operated spring-loaded friction wheel 61 which drives a wheel 69 mounted on a shaft 71. From the opposite end of the shaft a pinion 73 drives a gear 76 on a shaft 77 and meshes with a ring 79 to drive the filter-cleaning nozzle. The solenoid is operated by bellows 91 extended by back pressure set up by the dirt in the filter 33, which bellows also operates a second solenoid to close a flap valve 99 whereby the filter-cleaning nozzle is connected to the preliminary dirt separator.
Patent GB-984475-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G13/00
Filed: 1962-05-07
Abstract: 984,475. Conveyers. F. B. LAWTON. May 2, 1963 [May 7, 1962], No. 17532/62. Heading B8A. An arcuate roller conveyer has each roller 1 arranged to be driven about its horizontally disposed axis 3 by a sprocket wheel 9 coupled through bevel gears 6, 7 to a drive shaft 4, all of the sprocket wheels 9 being located in the same plane. The sprockets 9 are driven from a sprocket wheel 11 on a motor 12 by a chain 13 passing round one side of one sprocket wheel 9 and the other side of the next adjacent sprocket wheel 9 and tensioned by a sprocket wheel 14. So that all the rollers 1 rotate in the same direction alternate bevel gears 6 are replaced by a bevel gear 15 shown in phantom in Fig. 2.
Patent GB-617352-A (GB)
Title: Improvements in and relating to automatic record changers
IPC: G11B17/16
Filed: 1946-06-12
Abstract: 617,352. Magazine gramophones. THORENS SOC. ANON., H. June 12, 1946, No. 17556. Convention date, July 4, 1945. [Class 40 (ii)] In a magazine gramophone adapted to play both sides of the records, in which the reserve records are stacked above the turntable on a centre post revolving in reverse direction to the turntable, the pick-up playing first the underside of the lowermost record of the stack and then the upper side of the same record after being lowered on to the turntable, a feeler member is provided to engage the underside of the stack, its position relative to a second member being used to determine, by means not shown, the initial playing position of the pick-up at the start of a record according to whether the lowermost record is 10 inches or 12 inches in diameter. In one embodiment, shown in Figs. 1 and 2, a lever 21 pivoted about a point 20 on a second lever 16, and having a roller 22 at its end, engages the lower side of the stack at a distance from the centre of the record greater than the radius of a 10-inch record. A roller 18 on the lever 16 engages the lowermost record of the stack at a distance from the centre less than the radius of a 10-inch record. The rollers 18 and 22 are both maintained in contact with the lower side of the stacked records by springs (not shown). When the lowermost record is 12 inches in diameter, the levers 16 and 21 lie parallel to each other, but when the lowermost record is 10 inches in diameter, the levers 16 and 21 lie at an angle to each other, thereby introducing a displacement between the links 24 and 25, which is utilized to set the initial position of the pick-up on the record. During record-changing, the levers 16 and 21 are lowered to an inoperative position as in Fig. 3 (not shown). In an alternative construction, Figs. 5 and 6, the difference in radial displacement on the lowermost record of a roller 32 on a lever 29 is utilized to provide alternative positions 27<SP>1</SP>, 27<SP>11</SP> of a lever 27 for controlling the initial position of the pick-up. During record-changing, the lever 27 is made to occupy the position shown by chain-dotted lines in Fig. 5.
Patent GB-569030-A (GB)
Title: Improvements in or relating to the manufacture of composite boards
IPC: E04C2/296
Filed: 1943-10-26
Abstract: 569,030. Composite boards. KREMER, H. Oct. 26, 1943, No. 17647. [Class 145 (ii)] [Also in Group VIII] A composite board is formed with a core of Balsa wood, such as a number of blocks 10, arranged in contact, or a core of expanded rubber or foamed resin such as is known under the Registered Trade Mark " Formvar," and. wooden stringers 11 are pressed into the core by means of a hydraulic press, and outer covers 12 of sheet material are then glued to the core. The covers 12 are of wooden plywood or plates of sheet metal such as is known under the Registered Trade Mark " Alczad." The stringers may.be arranged parallel to the grain of the Balsa wood or may be, arranged across the grain in one or more directions. Stringers of half the -thickness shown may be pressed in from opposite sides of the core, and the stringers may be coated with glue before being impressed into the core. Other wooden blocks as 13 may be impressed into the core and serve to receive fixing-screws 14 or the like, and the core may be bounded by a shallow wooden frame also impressed in. The stringers 11 may be formed of laminated wood, and may be of different cross-section.
Patent GB-506695-A (GB)
Title: Improvements relating to pen and ink stands
IPC: B43L25/10
Filed: 1938-06-14
Abstract: 506,695. Inkstands. GREGORY, C. G. June 14, 1938, No. 17649. Convention date, July 22, 1937. [Class 146 (iii)] A pen and ink stand of the bird-fountain type comprises an integrally-formed container or housing, base structure, and pen guide and support, the container including a downwardly extending portion constituting an inkwell open to the pen guide, an upwardly projecting portion for receiving and surrounding an inverted ink bottle, and an intermediate portion adapted to support the bottle. The container 1 may have transparent or decorative panels therein, or the container, base 2, and pen guide 10 may be made of transparent material. A cap 9 closes the upper end of the container 1. The inverted ink bottle 6 inside the container is supported by an annular shoulder 5 on the container. An air-escape channel 27 is provided between the container 1 and the pen guide 10. This channel ensures equalization of pressure in the inkwell 8 and pen guide 10 since air can leak through the joint between the ink bottle 6 and shoulder 5. A penholder 17 to be used with the pen and ink stand has near its lower end a chamfered shoulder 19 around which a rubber disc 26 may be fitted to act as a seal for the pen guide 10, and the extreme lower end of the holder is provided with a rounded shoulder 21 which engages the interior of the guide 10. The tip of the pen nib, when the holder 17 is placed fully within the guide 10, engages the end of the wall 15 which separates the well 8 from the guide. A tube 28 for ensuring the continuous feeding of ink from the bottle 6 to the inkwell 8 has two lower branch portions; one 29<1> extending into the inkwell, and the other 29 extending upwardly into the ink bottle.
Patent GB-1306789-A (GB)
Title: Methods for measuring distortion in teleprinter signals
IPC: H04L12/26
Filed: 1971-05-28
Abstract: 1306789 Telegraphy; distortion measurement SIEMENS AG 28 May 1971 [3 June 1970] 17769/71 Heading H4P In a method of measuring start-stop distortion in teleprinter signals transmitted over a transparent network, a predetermined series of elements generated by a n-stage feedback shift register is developed together with a sequence of start and stop elements which are gated into the series before transmission. Known devices at the receiver measure distortion. Clock signals T step a pseudo random generator PG, also a counter Z which injects into the generator series start and stop elements via gates G1, G2 at determined counts. In the case of a five unit code the count is set to a value seven, a stop element having single bit length. A converter U amplifies the signals and transmits them with correct polarity in synchronous fashion. In another arrangement, Fig. 5 (not shown), stop elements may be equal to say 1À5 times bit length the clock pulses being cut off for an appropriate time so that the generator rests for this period, thus eliminating distortion at the output. For some measurements, e.g. fault frequency it is necessary that the start-stop signals are transmitted at the same positions in each generator series hence during the issue of redundant bits at the end of each series, it is arranged that the count Z is arrested during this period via an additional gate. In a modification parity bits can be also injected at appropriate positions into each series. In a further modification a device may be included for lengthening or shortening the start element in order to test the effect of deliberate distortion. Stop elements may be other multiples e.g. 2 or 3 times bit length.
Patent GB-1288442-A (GB)
IPC: C21C5/56
Filed: 1970-04-14
Abstract: 1288442 Extracting and refining iron SVENSKA KULLARGERFABRIKEN AB 14 April 1970 [16 April 1969] 17775/70 Heading C7D Scrap iron is pre-heated and then melted, or iron ore is pre-heated reduced and melted, in a twin hearth furnace, each hearth alternately operating as a pre-heating and then as a melting furnace. The bath is then transferred to a converter for refining, and subsequently to a ladle having an austenitic steel shell, or may be transferred directly to the ladle. After slag removal either a vacuum cover or a cover carrying electrodes is placed on the ladle, and the bath inductively stirred while being refined, alloyed and/or heated. The twin-hearth furnace may have cover-mounted burners for pre-heating and cover mounted electrodes for melting, while when ore is to be reduced hot reducing gases from the hearth operating in the smelting mode are passed through the ore in the other hearth.
Patent GB-353176-A (GB)
Title: Massage roller
IPC: A61H15/00
Filed: 1930-06-10
Abstract: 353,176. Massage apparatus. REICHL, H., 58, N³rnbergerstrasse, Gunzenhausen, Germany. June 10, 1930, No. 17799. [Class 81 (ii).] Massage apparatus comprises egg-shaped rollers loosely mounted on a transverse rod attached to a bent handle, the bearing being so constructed as to effect a jolting or vibrating movement as the rollers rotate. Massage rollers 2 fit tightly over cores 20, each having a central cylindrical bore 4 and end caps 5 provided with central bores 6 of smaller diameter the edges of which are corrugated. The rollers are secured on a transverse rod 3 by means of discs 8 and spring 9. The bent handle 1 comprises two parts detachably connected.