baber/WOPTO huggingface dataset:
Patent GB-1445069-A (GB)
Title: Process for the manufacture of esters
IPC: C07B61/00
Filed: 1975-04-02
Abstract: 1445069 Allyl esters F HOFFMANN-LA ROCHE & CO AG 2 April 1975 [3 April 1974] 13425/75 Heading C2C Esters of primary allyl alcohols where R<SP>1</SP> represents an acyl group R<SP>2</SP> an alkyl group or an acetalized carbonyl and R<SP>3</SP> an alkyl, alkenyl or cycloalkenyl group, and of derivatives obtained by hydrolysis of the acetal, are prepared by isomerization of tert allyl esters by means of a catalyst (PdX 2 Y) n  wherein n stands for 1 or 2 and X represents a chlorine or bromine atom and when n stands for 1, Y represents the group (RCN) 2  in which R is alkyl or acyl group or when n stands for 2, Y represents an aliphatic or cycloaliphatic hydrocarbon group containing one olefinic bond. The acetalized carbonyl function may then be hydrolysed. Bis-(acetonitrile-palladium chloride, PdCl 2 (CH 3 CN) 2  and (PdCl 2 cyclohexene) 2  are preferred catalysts and the isomerization is carried out in the absence of a solvent, or in the presence of a non-complexing solvent. Examples describe the preparation of 4,4-dimethoxy-3- methyl - 2- -butenyl acetate from 1 - (dimethyloxymethyl) - 1 - methyl - allyl acetate, followed by hydrolysis to 3-formyl-2-butenyl acetate; geranyl acetate from linalyl acetate and phytyl acetate from isophytyl acetate.
Patent GB-134808-A (GB)
IPC: B25B7/12
Abstract: 134,808. Tessarotto, U. Dec. 19, 1918, [Convention date]. Addition to 133,295. P l i e r s , cutting punching, stamping gripping, and sealing The wire-cutting pliers described in the parent Specification are adapted for punch ing and shearing sheet metal, stamping lead seals, or gripping articles, by replacing the cutters by appropriate tools. Fig. 3<a> shows a pair of shearing-tools, Fig. 4 a pair of punching-tools, and Fig. 6 a pair of stamping-tools with engraved faces for stamping lead &c. seals, which tools are inserted in the plier head in place of the cutting- tools. The gripping-tools are formed with serrated faces.
Patent GB-135158-A (GB)
IPC: B63B1/04
Abstract: 135,158. Elniff, J. Nov. 14, 1918, [Convention date]. Hulls.-The cross-section of a ship is substantially rectangular at the midship section, and the after body is of uniform width. The underpart 5 of the after-body rises slightly to allow a number of small propellers 11 to be fitted, and the raised portion 7 is continued aft some distance horizontally and is then sloped upwardly and forwardly beneath the waterline to meet the stern post 2. Any form of counter may be fitted. The upper part 9 of the stern is provided with guards 8 preventing inrush of water from the side when the ship is in motion,
Patent GB-581369-A (GB)
Title: Improvements in or relating to means for conveying materials through and out of a liquid
IPC: B07B7/08
Filed: 1944-02-19
Abstract: 581,369. Conveyers. SCHOLES, W., and RIDLEY, F. F. Feb. 19. 1944, No. 13527. [Class 78 (i)] Apparatus for conveying solids or semisolid materials or sludges through a liquid or semi-liquid, for example conveying the heavier settled material in mineral separation or coal washing, comprises a tank provided with a transporting or conveying surface which enters the tank at a depth below the level of the liquid in the tank. As shown in Fig. 1, the material to be separated is fed by shoots 4 or 4a into the tank on to a conveyer belt 2a which feeds it through the liquid to a shoot 5. The slot 1a by which the conveyer enters the tank is curved if a troughed belt is used. Figs. 4, 5 show another embodiment wherein material is fed into the tank by a shoot 12 and discharged by the belt 2a into a shoot 13, whilst if a " float " and " sink " separating process is being carried out, the floats are discharged through a channel 14. The bottom of the tank is in the form of a hopper 6a or a number of hoppers 6b, pipes 7, 8 serving to circulate the liquid. Ledges 16 support the belt whilst plates 15 deflect the " sinks " on to the belt. Leakage from the slot 6c is returned to the tank by a pump 10. In Fig. 7, the belt is introduced into the tank through a member 17a provided with a seal 17b of rubberised fabric. Liquid is circulated below the belt by a pump 17c and " floats are removed by paddles 18, 18<1> into a channel 17c. Figs. 10, 11 show another arrangement in which the portion 2a of the conveyer belt is supported by rollers 20 mounted between troughs 19a formed along the edges of an opening in the bottom of the tank. The belt may be mounted on a chain located in the opening and driven by sprockets. Sealing strips 21 are provided along the belt whilst seals 26 guard the slot 19b. In Fig. 14 the tank 27 is open at the bottom and traversed by the carrying portion 2a of the belt supported on rollers 28. Pneumatic tubes 30 in channels 29 on the lower edges of the tank sides serve as seals. In Fig. 20 the portion 2a of the belt is supported on a floor 44a. The " sinks " are raised out of the liquid by a paddle 48 and the floats delivered to channels 44c, 44d by paddles 51, 52. A hopper 75, Fig. 28, may be provided at the exit end of the carrier portion 2a to house a bucket conveyer 76 on to which the "sinks" are deflected by a plough 77 through an opening 74a. In a further modification both runs of the conveyer belt are arranged in the tank. Fig. 21 shows a modification wherein a jigger conveyer 54 is provided, supported by hangers 56 and operated by an eccentric 57. The jigger may form the bottom of the tank, being supported on rollers. In another modification, Fig. 25, the "sinks" are fed by the jigger conveyer 64 and paddle 66 to a shoot 68 and the floats discharged by paddles 70, 71 to a shoot 73. Specifications 563,754 and 563,779, [both in Group II], are referred to.
Patent GB-135457-A (GB)
IPC: F04D29/10
Abstract: 135,457. Fidwell, A. W., and Davion, L. Nov. 20, 1918, [Convention date]. Addition to 127,810. Void [Published under Sect. 91 of the Act]. Leakage-preventing devices.-In pumps of the kind described in the parent Specification, packing-rings e, e<1> are formed in both ends of the rotor and mesh with grooves in the casing. Ball bearings are provided for the shaft. The application of the packing-rings to a single-stage pump only is shown, but they are similarly used in multi-stage pumps.
Patent GB-468474-A (GB)
Title: Improvements in stapling apparatus
IPC: A43D69/04
Filed: 1936-05-13
Abstract: 468,474. Stapling. SEELIG & HILLE, R. May 13, 1936, No. 13555. Convention date, May 13, 1935. [Class 89 (iii)] A machine for forming staples from metal strip by cutting blanks transversely from the strip, comprises an arcuate driver 8, Fig. 5, and former 9 carried respectively by camoperated levers 4, 5 which oscillate about a pivot 3, the driver being guided in the unitary former. The strip is fed, preferably obliquely, up to a stop member 32 which is carried by the former and which retracts when it engages the clenching anvil, not shown. A bending die, not shown, co-operates with the former and is withdrawn when the staple has been shaped. The cams operating the levers 4, 5 are so shaped that the driver and former furnish a joint cutting edge when a staple blank is being cut. The driver and former are detachably and adjustably secured to the levers 4, 5 by bolts and nuts 10. A modified apparatus for driving three staples simultaneously comprises rocking levers 16, 19, Fig. 9, carrying respectively three drivers 15 and three unitary formers 18. The stop for the metal strip 1 is shown at 32. Each bending die 24 is rocked out of operative position by a cam 28 on the lever 19 engaging a lever 31 fast on the pivot pin 30 of the die. The clenching anvil is shown at 33.
Patent GB-849510-A (GB)
Title: Improvements in or relating to electrical capacitors
Inventor: FAIERS RAYMOND
IPC: H01G4/255
Filed: 1958-04-29
Abstract: 849,510. Capacitors. TELEPHONE MANUFACTURING CO. Ltd. April 27, 1959 [April 29, 1958], No. 13557/58. Class 37 A " self-healing " capacitor which may either be wound from self-healing metallized polystyrene film or be of laminated construction has its capacitance value adjusted by having a hole cut or drilled in it, preferably between its ends, a low potential being first applied between the drill or other cutting tool and the electrode and subsequently a voltage slightly higher than the operating voltage of the capacitor being applied between the electrodes to burn out any bridging between the electrode edges. The capacitance is measured at the end of each completed operation which is then repeated if necessary. The adjustment may be carried out either before or after the capacitor is encased in synthetic resin and in the latter case the hole is filled with dielectric, for example, of the same material as the casing. -
Patent GB-947256-A (GB)
Title: A method of producing tetrahedron-shaped packages from a thin-walled tube of packaging material
IPC: B65B9/12
Filed: 1962-04-09
Abstract: 947,256. Producing tetrahedron-shaped packages. HERMORION Ltd. April 9, 1962 [April 10, 1961], No. 13616/62. Heading B8C. Tetrahydron-shaped packages formed from a tube 4 of packaging material are prevented from creasing, while the transverse welds are being made, by gas pressure maintained in the interior of the tube. In the form illustrated material is fed into the tube by a spout 9, as described in Specification 946,040, and air delivered from an annulus 18 surrounding the spout 9 is prevented from escaping from the tube by a collar 20 leaving only a small gap from the wall of the tube. The air may be sterilised. The transverse welds are effected by pairs of jaws 6, 7 reciprocated vertically to feed the tube 4. The tube is formed from a folded web 1 by a ring 3 and longitudinal welding web 5. The material may be fed in by a stream of air.
Patent GB-1019638-A (GB)
Title: Improvements in or relating to transistor switches having a plurality of transistorswith their emitter-collector paths connected in series
IPC: H03K17/10
Filed: 1963-04-05
Abstract: 1,019,638. Transistor switching circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 5, 1963 [April 10, 1962], No. 13667/63. Heading H3T. In a transistor switching circuit in which current from a supply is controlled by a plurality of transistors connected with their emitter-collector paths in series, a series combination of transformer windings and capacitors is connected between the collector of the first transistor and the emitter of the last transistor of the series, and the base electrode or electrodes of the transistor or transistors except the last transistor are connected to points on the series combination so that when the current is switched by the transistors through a load the voltage distribution across the transistors does not exceed the permissable values for the transistors. As shown in Fig. 1, the current path through a device 21 is completed by the emitter-collector paths of transistors 1, 4 when a negative current is applied to the base of normally non-conducting transistor 4 from source 8 to render this transistor conducting and control the emitter current through transistor 1 which is biased by potential divider 2, 3. In order that reverse voltages do not damage the transistors during the switching  process and when the transistors are non- conducting the voltage of the supply 20 is distributed equally across the transistors by the series combination of transformer windings 14, 15 and capacitors 10, 11 connected as shown. To prevent oscillations damping resistors 12, 13 are connected to shunt the transformer windings 14, 15. Positive feedback from the transformer 9 over winding 17 and capacitor 18 enables transistor 4 to be switched on quickly. In the arrangement of Fig. 2 (not shown) three transistors are connected with their collector-emitter paths in series and in a further embodiment, Fig. 3 (not shown), the series combination of transformer windings and capacitors comprises two parallel paths connected in parallel with the switching path with the bases of the transistors each connected to one of the parallel paths.
Patent GB-925430-A (GB)
Title: Composite welded article and method of producing such article
IPC: B23K11/04
Filed: 1961-04-17
Abstract: 925,430. Making chains; welding by pressure; welding by fusion. CATERPILLAR TRACTOR CO. April 17, 1961 [June 1, 1960], No. 13709/61. Classes 83 (2) and 83 (4). [Also in Group XXXI] A composite welded article comprises a first section of ferrous material of one composition weld united to a second section of ferrous material of a second composition along a well denned plane free of interdiffusion and admixture between the materials of the sections, the welding having been effected by passing electric current through the sections and causing an arc therebetween to melt adjacent portions of the sections and pressing the sections together. A grouser-type track shoe 1 for crawler track vehicles comprises a drilled base-plate 2 of rolled, forged or cast plain carbon steel having an integral grouser base 4 solid state welded to a tapered grouser tip 6 of rolled or cast austenitic manganese steel along a plane 7. The base-plate 2 with its rounded base 4 is clamped by water-cooled jaws 28, 33 in a stationary die 21 of a welding machine and the tip 6 is clamped by watercooled jaws 29, 34 in a movable die 22, current from transformers being supplied to contacts 26, 27, 31, 32 which engage the clamping jaws. An arc is initially struck between the sections which are then moved together by a cam 35 and after current is cut-off the tip is urged towards the base by a piston 36 in an hydraulic cylinder 37 supplied from accumulators 38. Molten metal is expelled in a flash 13, Fig. 5, which Figure shows a modified tip, and the tip and base are solid state-welded along a plane 7. Welding may be effected in argon or nitrogen and the parts are preferably heat-treated and shot or sand-blasted before welding. The flashing is removed by shearing, grinding or abrasive cutting but an enlarged strengthening ridge is retained. Ripper or scarifier teeth for construction vehicles or bucket or scraper teeth for digging machines may be constructed in this way. the arc fusion welding of an austenitic manganese steel grouser tip to a plain carbon steel base using 18-8 austenitic stainless steel filler metal is described.
Patent GB-1340091-A (GB)
Title: Fluid filtering devices
IPC: B01D35/143
Filed: 1971-05-07
Abstract: 1340091 Fluid filter with by-pass valve and indicator PARKER-HAFFIFIN CORP 7 May 1971 [1 June 1970] 13768/71 Heading BID  A filter housing 12 encloses a cylindrical filter cartridge 34 and has a removable cover 16 enabling the cartridge to be replaced, and the cover incorporates an inwardly extending hollow boss 50 whose interior is divided into two by annular piston 64, slidable along guide 68 against spring 80 under the differential pressure across the cartridge, until the port 86 connecting the space within and downstream of the cartridge to the interior of the boss is cleared by the piston thereby by-passing the cartridge, the position of the piston being indicated outside the cover by means 56 (Fig. 2, not shown). Ports 84 permanently connect the space 44 outside the cartridge with the space 74 rightwards of the piston. Liquid enters the housing by inlet 20, annular channel 46 and passages 48 and leaves by outlet 24 to pump 26. The filter operates with cover 16 uppermost, and air tending to accumulate in space 44 is continuously by-passed through channels (136, 132) in cover 16 (Fig. 3, not shown) passage 131 through guide 68 and through tube 116, supporting magnets 114, to air vent screen 124. This prevents large air slugs being suddenly passed to pump 26. Cartridge 34 comprises a filter element 38 clamped by screws 42 between end caps 32, 40. A support 58 closing one end of boss 50 is secured thereto by screws 60, which are interconnected by wire 62 to prevent their coming loose and damaging pump 26. The by-pass valve and indicator unit is protected by boss 50 from damage when cover 16 is removed and is sensitive because it does not involve movement of the filter cartridge as in conventional constructions.
Patent GB-469977-A (GB)
Title: Improvements relating to fireplaces
IPC: F24B1/192
Filed: 1936-05-15
Abstract: 469,977. Open fireplaces. BAGGULEY, H. L. May 15, 1936, No. 13770. [Class 126] In a " well type open fireplace, the hearth tiles immediately adjacent the fire are protected by a device comprising a base-plate a which is either placed on or substituted for the rear row of hearth tiles and carries a guard rail or fence b to prevent burning fuel from falling on to the hearth. The fence b, which has curved ends b<1> abutting against the fireplace surround, is positioned above the plate a to provide a space d for the passage of air, while further openings a<2> for the supply of air to the fire are formed in the downturned front edge of the base-plate.
Patent GB-1506126-A (GB)
Title: Apparatus for use in absorbing a gas in a liquid
IPC: B01D3/28
Filed: 1976-04-06
Abstract: The apparatus comprises, in addition to the bundle of vertical cooled tubes (2), one or more plates (12, 15) located inside the shell above the bundle of tubes (2), said plates being sprayed with absorbent liquid. The apparatus enables the degree of absorption to be increased, the amount of residual non-absorbed gas to be reduced and a more concentrated absorption solution to be produced. It is particularly applicable to the absorption of gaseous ammonia in water. <IMAGE>
Patent GB-451450-A (GB)
Title: Improvements in or relating to crop-sprayers, garden-engines and similar spray producers, or liquid distributors
IPC: B05B1/16
Filed: 1935-05-10
Abstract: 451,450. Spray - producers ; valves. DAVIES, C., South Eastern Agricultural College, Wye, Kent. May 10, 1935, Nos. 13812 and 23151. [Classes 69 (iii) and 135] The lance of a crop or other sprayer is provided with a valve controlled by a rod operated by a stationary grip or handle or by a weight or float so that as the nozzle end of the lance is raised or lowered angularly the rod will be moved to vary the liquid outlet thus giving a spray when the nozzle is directed to the lower part of a tree and a more concentrated jet on the upper part. Fig. 1 shows a lence B provided at one end with a valve A2 attached to a rod A extending through its other end and pivoted at a to a link D. The link D is pivoted at D<1> to a bracket C fixed to the lance and is rigidly attached to a handle E held in the operator's hand or attached to a harness. As the lance is inclined the valve A<2> is drawn away from the nozzle. Modifications are described in which the pivot D<1> can be adjusted on the arm C, in which the rod A is actuated by a quick screw, and in which an eccentric on a spindle attached to the handle engages a strap on the valve rod. When a rotary valve is used to control the outlet the rod may be turned by bevel gearing on a spindle attached to the handle. Fig. 7 shows the rod A operated by a weight k<4> as the lance is inclined and in Fig. 8, the rod is operated by a float L2 pivoted at L<1> to a bell-crank L attached to the rod A. The valve is also shown for controlling a nozzle at an angle to the lance and for controlling groups of two or more outlets.
Patent GB-631007-A (GB)
Title: Production of monocyclic aromatic tricarbonimides and related compounds
Filed: 1947-05-23
Abstract: Monocyclic aromatic tricarbonimides (isocyanates) are prepared by reacting one mole. of an aromatic triamine of the formula <FORM:0631007/IV (b)/1> where R is hydrogen, an alkyl, alkoxy or aryloxy group dissolved in an organic solvent with at least 1.5 moles. of phosgene dissolved in an organic solvent, heating the resulting suspension to a temperature not lower than 90 DEG  C. and passing in phosgene and removing liberated hydrogen chloride, the solvent used being inert to the starting materials and also to hydrogen chloride and the organic reaction products.  The solvent is preferably one having a boiling point below 160 DEG  C. and may suitably be a hydrocarbon, halogenated hydrocarbon or an ether, e.g. toluene, xylene, dioxane, monochlorobenzene, orthochlorotoluene or mixtures of these with benzene or ethylene dichloride.  The suspension is preferably maintained at 100-130 DEG  C. while the phosgene is passed on and if desired, the phosgene may be admixed with an inert diluent gas to assist the removal of the hydrogen chloride. Aromatic chloro carbonimides are formed at intermediate stages of the reaction.  In examples (1) 2 : 4 : 6-triaminotoluene in ethylene dichloride is added to a solution of phosgene in monochlorobenzene and a stream of phosgene is passed in to give toluene 2 : 4 : 6-tricarbonimide; (2) 2 : 4 : 6-triaminotoluene in monochlorobenzene is added to phosgene in monochlorobenzene and phosgene is passed in to give toluene-2 : 4 : 6-tricarbonimide; (3) 1 : 3 : 5-triaminobenzene is reacted with phosgene as in (1) to give benzene tricarbonimide and (4) 2 : 4 : 6-triaminophenetole is reacted with phosgene in xylene and further phosgene is passed in to give ethoxybenzene-2 : 4 : 6-tricarbonimide.  Aromatic triurethanes are prepared from the tricarbonimides in the examples by treatment with alcohols giving toluene-2 : 4 : 6-triurethane benzene-1 : 3 : 5-triurethane and ethoxybenzene-2 : 4 : 6-triurethane.  Aromatic tricarbamides are prepared from the tricarbonimides of the examples by treatment with dry ammonia in ether giving toluene-2 : 4 : 6-tricarbamide; benzene-1 : 3 : 5-tricarbamide, and ethoxybenzene-2 : 4 : 6-triurethane.  Specification 625,350 is referred to.
Patent GB-238496-A (GB)
Title: Improvement in dustless rock drills
IPC: E21B21/01
Filed: 1925-05-27
Abstract: 238,496. Ingersoll-Rand Co., (Assignees of Bayles, L. C.). March 12, 1925, [Convention date]. Percussive drills.-For the purpose of reducing the formation of dust whilst drilling, a dust pocket Y is provided between two vents a, Z in a cylinder extension 0 and in the chuck F respectively. The anvil block G is a working fit in the chuck. A lubricating chamber d is provided with the usual filling plug. The flutes D in the piston are of such a length as to be shut off from the cylinder except when the main exhaust h is open to atmosphere.
Patent GB-385196-A (GB)
Title: Improvements in and relating to valve mechanism for internal combustion engines
IPC: F01L5/02
Filed: 1932-05-14
Abstract: 385,196. Valves; valve gear. BACQUEYRISSE, L., 53 ter, Quai des Grands Augustins, Paris. May 14, 1932, No. 13923. Convention date, May 27, 1931. [Class 7 (vi).] Inlet at 5 and exhaust at 6 are controlled by slide valves 7, 8 formed of thin metal blades which are pressed on to their seatings by the cylinder pressures. Further fluid tightness may be obtained by plates or strips pressed by springs against the faces or edges of the valve blades. Apertures may be formed in the valves to lighten their weight. Actuation of the valves may be effected by cam shafts 20, levers 18, 19, and links 17, with or without returning-springs ; or they may be driven by crank shafts.