baber/WOPTO huggingface dataset:
Patent GB-886479-A (GB)
Title: Improvements in or relating to úf-xylene derivatives
IPC: C07C25/125
Filed: 1959-04-28
Abstract: The invention comprises halogen derivatives of m-xylene having the general formula <FORM:0886479/IV (b)/1> wherein n is 0 to 2, X1 and X3 are halogen atoms, and X2 and X4 are hydrogen and/or halogen atoms, any free bonds being satisfied by hydrogen, and wherein n is 0, X2, X3, and X4 are halogen atoms.  The halogen atoms may be chlorine, fluorine, bromine, or iodine.  Specified compounds of the stated formula include a , a 1, 4, 6 - tetrachloro - m - xylene, a , 4 - di - chloro - m - xylene, a , a 1, 4 - trichloro - m - xylene, a , a , 4, 6 - tetrachloro - m - xylene, a , 4, 6 - trichloro - m - xylene, and a , a , a 1 - trichloro-m-xylene.  The compounds may be obtained by halogenating, preferably with free halogen, m-xylene itself or a nuclearly halogenated derivative thereof, the reaction being carried out in the presence of actinic radiation at a temperature below 80 DEG C., e.g. between -20 DEG C. and +80 DEG C. The reactants are used in no greater than stoichiometric proportions. The reaction may be carried out in the presence of an inert solvent such as carbon tetrachloride, chloroform, and chlorobenzene.  The products may be isolated by distillation at reduced pressure and recrystallization from an organic solvent.  They may be converted into xylene glycols, or they may be used as pesticides, or as additives to petroleum products.ALSO:Pesticidal compositions contain a carrier and as active agent a compound of the formula <FORM:0886479/VI/1> wherein n is 0 to 2, X1 and X3 are halogen atoms, and X2 and X4 are hydrogen and/or halogen atoms, any free bonds being satisfied by hydrogen, and wherein when n is O, X2, X3 and X4 are halogen atoms.  The halogen may be chlorine, fluorine, bromine, or iodine, but chlorine is preferred.  Specified compounds of the stated formula include a ,a 1,4,6-tetrachloro-, a ,a ,4,6 - tetrachloro-, a ,4,6 - tri - chloro-, a ,a ,a 1-trichloro-, a ,a 1,4-trichloro-, and a ,4-dichloro-m-xylene.  The compositions may contain clay, diatomaceous earth, talc, alumina-silica materials, water, organic liquids such as kerosene, benzene, toluene, xylene, acetone cyclohexanone and petroleum distillate fractions.  Wetting, emulsifying and dispersing agents may be present.  The compositions may contain in addition to the halogenated m-xylenes, other pesticidal substances, e.g. other chlorinated hydrocarbons, organic phosphorus compounds, foliage and soil fungicides, and pre- and post-emergent herbicides.  The compositions may be used as nematocides.
Patent GB-1294394-A (GB)
Title: Improvements in suspension systems for vehicles
Inventor: ALLINQUANT FERNAND MICHEL
IPC: F16F9/084
Filed: 1970-03-25
Abstract: 1294394 Assemblies of shock absorbers and fluid springs F M ALLINQUANT and J G ALLINQUANT 25 March 1970 [31 March 1969 2 Oct 1969] 14517/70 Heading F2S In an assembly of a telescopic fluid piston and cylinder shock absorber acting in parallel with a separate fluid spring, in which the spring fluid is contained in a chamber 5 with a flexible wall surrounding the cylinder 1 of the shock absorber,. the chamber is so arranged that the piston-rod 2 of the shock absorber does not pass through it. This prevents spring fluid entering the shock absorber cylinder through the piston-rod seal and affecting the operation of the shock absorber. Preferably the spring chamber is annular and is restrained against radial deformation. In Figs. 1 and 5, and Figs. 6-9 (not shown), the spring chamber has all its walls flexible, and is in the form of an annular pouch 5a (Fig. 1), a tube 29 wound in the form of a helix (Fig. 5), a tube 29 wound in the form of a helix with separate contiguous turns adhered together (Fig. 6), a fabric-covered and therefore inextensible helical tube 29 (Figs. 7 and 8), and hollow rings (31) superimposed and adhered together with interconnecting passageways (32, Fig. 9). In Figs. 2, 3, 10 and 11 (not shown) the spring is of rolling diaphragm type and in Fig. 4 (not shown) is a combination of bellows and rolling diaphragm.
Patent GB-1112020-A (GB)
Title: Vapor-phase stabilization of polyoxymethylene
IPC: C08G2/28
Filed: 1967-03-30
Abstract: Polyoxymethylenes are stabilized by removal of a base-unstable fraction therein, by heating a solid polyoxymethylene in the presence of a guanidine base in a non-acidic reaction medium. Suitable non-acidic reaction media are nitrogen, ammonia, argon, alcohols, ethers and water. Suitable bases are guanidine, 1,3-diphenyl-, tetramethyl-, 1,1-dimethyl-, butyl- and cyanoguanidine, biguanidine, and cyanamide (which forms guanidine in the reaction).  In Examples I-V, the polyoxymethylene employed is the diether of a homopolymer, etherification being effected by means of a trimethylorthoformate, dimethyl sulphate, toluene mixture.  In Example VI, the polyoxymethylene is a formaldehyde-dioxolan copolymer.
Patent GB-233910-A (GB)
Title: An improved folding box or basket
IPC: B65D5/46
Filed: 1924-06-18
Abstract: 233,910. Manners, R. G. June 18, 1924. Handles.-A box or basket made from a blank and shown in the folded form has handle members a, b, pivotally attached to the sides ana formed with the elements a<1>, b<1> of a tongue-andslot fastening by which they are adapted to be connected together. The parts have feet a<2>, b<2>, adapted to bear against the bottom of the basket to prevent it from swinging whilst being carried.
Patent GB-1534773-A (GB)
Title: Apparatus suitable for use in the automatic arc welding of pipes
IPC: B23K9/028
Filed: 1976-04-09
Abstract: 1534773 Welding by fusion SAIPEM SpA and ARCOS SALDATURA ELETTRICA AUTOGENA SpA 9 April 1976 [17 April 1975] 14701/76 Heading B3R Orbital arc welding apparatus for welding pipes together end-to-end comprises a geartoothed flexible track 3 securable about one of the pipes adjacent the joint zone, a self-propelled welding head carriage 16 provided with trackedge-engaging, pivotally mounted, guide rollers 20, (21) and an electric motor/gear driven, tracktooth-engaging carriage drive pinion 32, a welding head 64 adjustably mounted on a plate 58 in turn mounted for reciprocation, parallel to the pipe axis, in a frame 52, a carrier-mounted electrode wire storage reel 105 and wire feed mechanism 110, screw means 50, 54 for adjusting parallel to the pipe axis and vertically, the frame 52, and hence the head 64, with respect to the carriage 16, and pneumatic-mechanical means for effecting said reciprocation of the plate 58, and hence the head 64, said means being adjustable during orbital and reciprocatory movement of the head to vary reciprocation stroke amplitude, frequency and dwell period. The track 3 is provided with pairs of standoff studs 7 and with a screw-adjustable hook fastening 10, 11, 13. The carriage wheels 21 (Fig. 3, not shown) are handle-releasable from, and spring loaded into, engagement with the track, and the carriage drive pinion and its motor and gearing are mounted on a pivotable plate 34, a spring 36 and a lever-actuated cam 44 acting on the plate respectively to engage and disengage the drive pinion. The pneumatic-mechanical means for reciprocating the plate 58 comprises a doubleacting cylinder 70 actuated by compressed air from a compressor 77, reservoir 78 and pressure reducer 79 via a valve 74 controlled by valves 86, 87 having pins 97, 98 acted on by the plate 58 at the ends of its stroke. The reciprocation stroke amplitude is varied by a double-threaded screw 84 determining the spacing of the valves 86, 87, the reciprocation frequency is varied by varying the speed of the piston 68 of the cylinder 70 by varying the adjustment of a discharge regulator 81 in the cylinder exhaust line, and the dwell period at the reciprocation stroke ends is varied from zero by adjustment of expansion chamber connected throttling valves 95, 96 between the valves 86, 87 and the valve 74. The welding head 64 is adjustable with respect to the plate 58 both parallel to the workpiece pipe axis and pivotally about an axis disposed transversely of said pipe axis. The electrode wire feed 110 comprises grooved driving rollers 111, 112 driven by an electric motor 108 via gearing 109, 114 and grooved idler rollers 115, 116 mounted on a plate 117 pivoted on a lever 119 urged towards the driving rollers by a spring 121 reacting on an adjusting nut 122.  Motor energizing and welding current, compressed air and shielding gas are supplied by way of a single conduit 102, and a control box 100 houses the throttling valves 95, 96, discharge regulator 81 and speed controls and switches 101 for the electric motors.
Patent GB-557661-A (GB)
Title: Improved fastening for doors and the like
IPC: E05C9/06
Filed: 1942-10-20
Abstract: 557,661. Fastenings for doors &c. LUNDHOLM, J. E. Oct. 20, 1942, No. 14721. [Class 44] A fastening for doors &c. comprises a rod 8 longitudinally movable by a handle 4 and carrying one or more curved bolts 12, provided at one end with a locking member 13 which enters a recess in the door frame in locking position, and at the other end with a cam &c. 14 which, in the unlocking position, imparts an initial opening movement to the door. The bolt is guided in its movements by slots in a fixed plate 5 which encloses the fastenings in a recess in the door. If two fastenings are arranged at opposite edges of a window &c. the rods 8 are connected by linkwork in a third edge. In another application, one fastening is mounted in one edge of a main window, and is connected to another at right angles thereto controlling a smaller upper window.
Patent GB-1066942-A (GB)
Title: Improvements relating to gas burning cigarette lighters
Inventor: LOWENTHAL HANS
IPC: F23Q2/52
Filed: 1963-04-16
Abstract: 1,066,942. Gas lighters. COLIBRI LIGHTERS Ltd. April 1, 1964 [April 16, 1963; Dec. 10, 1963], Nos. 14880/63 and 48751/63. Heading F4F. A gas lighter has a reservoir 3 within outer casing 1 having a cover 7 pivoted at 7a, gas issuing from a valve 15 being lit by a flint mechanism 4, 5, 6, 6a; a lever 8 pivoted at 9 to an inner casing 2 slidable into casing 1, has a nose 10 acted on by a spring 11 to press a nose 14 against a cup 12 fixed to cover 7 to hold the cover closed and when the cover is opened manually the cup engages nose 14 to rotate the lever 8 past a dead-centre position to finally hold the cover open. The lever 8 has an extension 17 carrying a spring biased ball 22 to act on plunger 16 to hold the valve 15 closed when the cover is closed. With the cover open, the lever 8 can be manually rotated to close valve 15 whilst the lighter is serviced. A leaf spring 13 wrapped around lever 8 acts between the cup and lever to firmly press nose 14 against the cup to prevent the cover rattling. The reservoir 3 is slidably mounted in casing 2 and is held therein by a protruding rim 28 of a filler valve 27 extending into an opening 29 in casing 2, the easing being made resilient by slots 31-to allow the rim to pass into opening 29. In other embodiments the extension is moulded into lever 8 and can carry a spring biased piston instead of ball 22; the extension may also be a leaf spring or a spring loaded lever pivoted to lever 8; and the spring 13 may be fixed to the cup.
Patent GB-274791-A (GB)
Title: Improvements in radiants for gas stoves and fires
IPC: F24C15/24
Filed: 1927-06-07
Abstract: 274,791. Oakley, P., Richardson, W. H., and Stoves, Ltd. June 7, 1927. Radiants for gas fires.- Perforated radiants are constructed with a bellied or barrelled front portion f, thus forming an expansion chamber for the combustion products and preventing impingement of the inner blue core of the flame on the radiant, with the consequent deposition of carbon. The sides of the radiants are parallel.
Patent GB-963185-A (GB)
Title: Improvements in or relating to distributed high-frequency amplifiers
IPC: H03F1/20
Filed: 1963-04-17
Abstract: 963,185. Distributed amplifiers. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. April 17, 1963 [April 17, 1962], No. 14987/63. Headings H3T and H3W. In a distributed amplifier of the type in which the anodes of a number of valves I-IV, Fig. 2a, are connected to successive points in a tapered transmission line, the load impedance and gain are increased by using impedance matching transformers between sections of line. The Specification gives a mathematical explanation of the basis for design. It is shown that if Z1 is the characteristic impedance of the first section of line, connected to valve V1, Fig. 3, and m the voltage step-up ratio of the following transformer, then the second valve should, for matching purposes, work into an impedance of Z1m so that the second section of line must have a combined impedance of Z2=m<2>/m+1 Z1. Transformers may be used between successive sections of the anode line; alternatively, the first section of line may be transformer connected to the second which is followed by a number of tapered line sections without transformer connection. When the line impedance has become sufficiently reduced, transformer connection is again used, to be followed by a further tapered line (Fig. 4, not shown) Autotransformers may be used, the leakage inductance being thrown into the impedances of the line, which is of band-pass type. In a further push-pull embodiment, the transformer is of 1: 2 ratio and comprises two equal lengths of concentric transmission line, Fig. 6, with the inners and outers cross-connected at the input end, the output being taken from the two inner conductors: the characteristic impedance of the lines may be increased by the use of helical inner conductors. The arrangement may be neutralized so as to use triode valves or transistors. The capacities shown across the two input sides of the transformer network and which terminate the preceding filter network may comprise the anode to ground capacities of a further pair of valves (Fig. 8, not shown).
Patent GB-1130478-A (GB)
Title: Apparatus for the treatment of small articles in motor-driven rotary drums
Inventor: OETIKER HANS
IPC: B24B31/02
Filed: 1967-04-03
Abstract: 1,130,478. Tumbling. H. OETIKER. 3 April, 1967 [16 April, 1966], No. 15160/67. Heading B3D. Apparatus for subjecting small articles to an abrasive finishing treatment in rotary drums comprises a vertical column 1, a substantially horizontal drum support 2 rotatably mounted at its centre on said column, at least two drums 6, 7 rotatably mounted on said horizontal about substantially vertical axes B-B located on diametrically opposite sides of said vertical column and means for rotating said horizontal support and said drums in rotational symmetry about their respective axes, and is characterized in that said horizontal support 2 is rotatably mounted on said vertical column 1 by means of a pair of axially spaced bearings 3, 3, and each of said drums is provided with an axial stub shaft 6a, 7a fixedly mounted in a sleeve 8, 9 rotatably mounted in said horizontal support by means of a pair of axially spaced bearings 4, 4, 5, 5, said horizontal support being rotatable on said vertical column by a motor 15 through suitable drive means and each of said drums being rotatable by means of a sprocket 12, 13 or pulley fixedly mounted on the sleeve in which the stub shaft of the drum is mounted, and between the axially spaced bearings of said sleeve, and connected by a chain 14 or belt with a sprocket 10, 11 fixedly mounted on said vertical column between the axially spaced bearings of said horizontal support.
Patent GB-402445-A (GB)
Title: Improvements relating to cases or cabinets for piles of paper or other thin sheets
Filed: 1932-05-31
Abstract: 402,445. Cases for paper sheets &c. SMITH, G., 203, Ashley Road, Hale, Cheshire. May 31, 1932, No. 15375. [Class 18.] A case or cabinet for a pile of thin sheets of paper &c. comprises a drawer or the lik e adapted to hold the pile and provided with an inclined or upwardly curved or concaved wall so arranged that when the uppermost sheet of the pile is moved by light pressure towards said wall its leading edge will slide up the wall and permit the sheet to be readily removed, a guard device being arranged near or towards the top of said wall and in close proximity thereto for the purpose of preventing more than a single sheet from passing between it and the wall at a time. As shown the case 9 is removably fitted into a compartment of a drawer and one wall is provided with two sloping portions 11, 12, with a recess 22 between them. The guard is shown as a roller 13, but may be in the form of a stationary crossbar having a curved undersurface. A U-shaped wire clip 15 pivoted in the case walls holds down the sheets. The case rests on abutments 21 between which are stored spare sheets. The case may be provided with an extension forming a spares compartment.
Patent GB-780477-A (GB)
Title: A process for removal of hafnium from zirconium-containing material
Inventor: NEWNHAM IVAN EDGAR
IPC: C01G25/04
Filed: 1953-06-03
Abstract: Hafnium is removed from zirconium or its compounds by converting the zirconium or compounds thereof and the associated hafnium into tetrahalides, reducing the tetrahalide of zirconium to a lower halide or to metallic zirconium whilst leaving the hafnium tetrahalide unreduced, and separating the hafnium tetrahalide and any unreduced zirconium tetrahalide from the zirconium reduction products.  The reduction may be effected with metallic zirconium, magnesium, aluminium, or zinc but preferably with zirconium dihalide which may be produced by the treatment of an initial batch of zirconium and hafnium tetrahalides with finely divided metallic zirconium. According to the preferred procedure, tetrahalides of zirconium and hafnium are formed and sublimed on to cooled coils of a removable lid of a reaction chamber, which lid is then transferred to another reaction chamber where the tetrahalides are volatilized and brought into contact with zirconium dihalide whereby the zirconium tetrahalide is reduced to relatively non-volatile lower halides, the hafnium tetrahalide being removed by vacuum pumps from the reaction vessel.  The temperature of the vessel is then increased whereby the zirconium lower halides probably the trihalides disproportionate into pure zirconium tetrahalide which condenses on the cooled reaction chamber lid, and zirconium dihalide which remains in the vessel and may be employed in the treatment of the next batch.  The reduction may be effected in vacuo or in an atmosphere of an inert gas such as argon.  The hafnium-free zirconium tetrahalide which is recovered on the cooled reactor lid may be reduced with magnesium followed by vacuum distillation of the magnesium chloride and excess magnesium to obtain a zirconium sponge which may be melted in a resistance furnace to form zirconium ingots. Alternatively after the reduction step the lower zirconium halides formed may be dissolved in water or dilute mineral acid to obtain solutions of zirconium oxyhalides containing less than 0.1 per cent of hafnium.  The halide preferred is the chloride.
Patent GB-1371187-A (GB)
Title: Process for the production of xylenol
IPC: C07C67/00
Filed: 1973-03-30
Abstract: 1371187 Production of xylenol ATLANTIC RICHFIELD CO 30 March 1973 [12 April 1972 29 Dec 1972] 15428/73 Heading C2C Xylenol is prepared by contacting acetone in the vapour-phase with a catalyst comprising essentially magnesium oxide at a reaction temperature of from 700 to 950 F., the reaction being carried out in a single stage.
Patent GB-1005108-A (GB)
Title: Process for electrolytic silvering
Inventor: FACSKO GEORGHE
IPC: C25D3/46
Filed: 1963-04-19
Abstract: In an electroplating bath for silver, the silver used is a compound containing a sulphon-amido group e.g. 4-sulphon-amido-benzoic acid, which is rendered soluble by adding caustic soda forming a complex. For example, silver nitrate is added to a neutralized solution of 4-sulphon-amido-benzoic acid in at least equi-molecular proportions, and the precipitate formed is dissolved by adding further alkali. Plating is effected at a C.D. of 0.1 -0.3 A.S.Dm. or higher.  Any heavy metals are precipitated from the solution which is readily regenerated.
Patent GB-955994-A (GB)
Title: Electrostatographic apparatus
IPC: G03G13/08
Filed: 1960-05-03
Abstract: 955,994. Electrostatographic apparatus for developing and viewing images. RANK-XEROX Ltd. May 3, 1960 [May 7, 1959 ], No. 15532/60. Heading G2H. Electrostatographic apparatus has means for optically projecting an image of a specular donor member upon depletion of toner particles thereon as a result of transfer to an electrostatographic surface or an insulating sheet in contact with such surface. In one embodiment, an electrophotographic drum 33, Fig. 4, which may be reflecting, has a photoconductive insulating layer 34 of selenium overlying a conductive support layer 35. The layer 34 is sensitized at a charging station 36, e.g. by a corona discharge, and is then exposed at station 37. The image pattern produced is then developed at station 38 where the image layer on the surface of layer 34 is developed through deposition of powder particles 52 in accordance with the charge configuration. A donor member in the form of a web 45 of conductive specularly reflective material, e.g. foil, is fed past station 38 from a spool 46. Powder cloud generator 31 discharges a gaseous suspension of finely divided particles at the surface of web 45 to form a uniform layer 47 thereon. Alternatively, the powder layer 47 may be pre-loaded, thus dispensing with the cloud generator 31. A resilient roller 48 maintains light contact between web 45 and drum 33. A spring contact 50 connects web 45 to a source of potential 51. Particles of the layer 47 attracted to the charged areas of layer 34 result in a photographic negative on the surface of web 45. An image of the pattern on the web is projected on to a screen 63 by an optical system having a light source 58, condenser lens 60, and lens 61, the light being reflected by the web 45 except in the areas still carrying layer 47. A second optical system may be provided at further station to project an image of the developed surface of drum 33 on to a screen 70. The further station 40 may be replaced by a transfer station when it is not required to project an image of the drum 33. In another embodiment, an electrostatic image on an insulating web 71, Fig. 5, is developed by a particle layer 47, the web passing between a roller 48 and drum 33 carrying a photo conductive layer 34. The developed image on the web 71 may be fused and the web may be wound in a roll or cut into lengths.