baber/WOPTO huggingface dataset:
Patent GB-538393-A (GB)
Title: Improvements in and relating to screw thread grinding machines
IPC: B24B19/02
Filed: 1939-07-12
Abstract: 538,393. Grinding screw threads. HORSTMANN, S. A., and- HORSTMANN, Ltd. July 12, 1939, No. 20285. [Class 60] Screw - thread grinding machines having a headstock and preferably a tailstock mounted on a bed rockable about and traversed along an axis lying parallel, or substantially so, to the axis of rotation of the grinding wheel. are provided with means for automatically locking the bed as it traverses across the wheel. The headstock 22 is carried by a rocking and traversing bar 20 on which is a loose collar 21 having an arm attached to an abutment member 25 sliding on the bed and connected to the headstock by dowels 27 which maintain engagement throughout the range of oscillation. Arms 37 carried by the headstock support a crossbar 36 linked to a lever 35 carrying at its other end a roller 38 for engagement by a cam 39 chain driven from the headstock spindle. The lever rests on an abutment 34 traversed by a screw carrying a graduated knob to vary the amount of rocking imparted to the headstock by the cam. By these means wheels may be dressed to grind threads of the same form but differing in pitch without changing the cam. The extent to which the roller 38 can approach the axis of the cam is adjustable by means of a pin 28 passing loosely through a part of the headstock and engaging the abutment member 25 at one end and a cam plate 29 at the other. By rotating the cam plate the roller 38 can be held clear of the cam 39 and the rocking mechanism rendered inoperative. The dressing diamond 42 is carried by a bar 43 mounted between the centres and sliding on the way 24 under the control of a spring or a weight 50. The diamond is located below the line of centres to prevent digging in and possible fracture. In dressing a wheel to screw thread form the cam plate 20 is so adjusted that on the first traverse only a shallow groove is cut, successive adjustments and traverses being made until the full thread form is developed. When the device is to be employed for grinding backed-off threads in screw-cutting taps a multi-tooled cam is employed according to the number of flutes. In a modification the dressing diamond is rigidly mounted. Specifications 500,726 and 512,225 are referred to.
Patent GB-462809-A (GB)
Title: Diamond embedded abrading tools and methods of manufacture thereof
IPC: B24D18/00
Filed: 1935-07-16
Abstract: 462,809. Diamond tools. WILLEY, F. H. July 16, 1935, No. 20309. [Classes 60 and 124] [Also in Groups V and XI] A tip for an abrading, drilling, or surfacing tool is formed by placing whole diamonds in a powdered metal composition having an avidity for carbon and applying a sufficient heat to graphitize orgasefy the surfaces of the diamonds so as to form a carbide of the metal composition in contact with the diamond surfaces. The metal composition may consist of a metal of the sixth group of the periodic table and a metal of the iron group. A suitable composition consists of 60 to 70 per cent tungsten, 3 to 5 per cent carbon, and the balance nickel, the mixture being milled for upwards of 120 hours in a ball mill to reduce it to granular form. In forming the tip a diamond or diamonds, preferably larger than would pass through a 20-mesh screen, and a quantity of the powdered metal composition are placed in a crucible 3 of carbon, graphite, or metal lined with carbon or graphite. The crucible 3 is then placed on the water-cooled base 4 of an electric welding machine and is gripped between water-cooled electrodes 1, 2. Pressure is applied to the powdered material by means of a plunger 10 reciprocated by a handle 28. Additional quantities of the powdered material and diamonds are added until the tip is of the required size, the plunger 10 being operated to tamp the material after each addition. A graphite button 33 is then placed on the composition and electric current is supplied to the electrodes simultaneously with the application of pressure by the plunger 10. The included air is thereby driven off. At cherry red heat the current is cut off and the pressure released. The heating and cooling are then repeated three or four times with increasing temperatures and pressures, the last stage reaching for a short period a temperature of from 1900 to 2200‹ C. and a pressure of about 50,000 lbs. per square inch. The plunger 10 has a molybdenum or other hard metal tip and is supported by a holder 11 reciprocable in a bracket 12 on a standard 13 mounted on the machine base 6. The upper part of the standard 13 carries a chambered head 14 containing a coiled spring 15. The spring 15 is seated between an adjustable plug 16 and an abutment 18 threaded on a spindle 20 which is connected by toggle links 23, 26 to the plunger holder 11. The handle 28 operates the link 23, the pressure applied to the material being indicated by the displacement of a finger 29 on the abutment 18 relatively to a gauge plate 31. A coiled spring connecting the pivot pins 24, 27 of the links 23, 26 normally holds the plunger 10 above the crucible.
Patent GB-1348318-A (GB)
Title: Pipe line for the transport of cold liquids
IPC: F16L59/14
Filed: 1971-04-19
Abstract: 1348318 Thermally insulated pipes; pipe joints SHELL INTERNATIONALE RESEAKCH MAATSCHAPPIJ NV 19 April 1971 [28 Jan 1970] 20358/71 Headings F2P and F2G A pipe-line for the transport of cold liquids comprises two rigid coaxial pipes rigidly connected to each other such that at ambient temperature or operating temperature a high axial compression stress is present in one of the pipes, buckling of the pipes being counteracted by heat insulation material in the space between the pipes through which one pipe elastically supports the other. In one embodiment (Figs. 1, 4, not shown) the pipes (1), (2) are welded to each other at the ambient temperature without prestressing and on cooling to the operating temperature an axial tensile is induced in the inner pipe (1) with a corresponding compressive stress in the outer pipe (2). In the other embodiment, Fig. 2, compressive and tensile stresses are respectively induced at the ambient temperature in the inner and outer pipes 11, 12 by means of bolts 18 but on cooling to the operating temperature the thermal contraction of the inner pipe 11 reduces the prestresses in the pipes to substantially zero. The heat insulation material 15 may be a closed cell PVC or polyurethane foam and may be reinforced at 16 with a glass-fibre or natural fibre fabric or a metal matting. A slide layer, which permits the inner pipe to move axially of the insulation material may be provided between the inner pipe and the insulation and may comprise glass-fibre or polypropylene fabric, plastics foil, paper or jute. The inner pipe may be of 9% nickel steel or aluminium and the outer pipe of carbon steel and the outer pipe may be covered with a concrete jacket. Pipe joints.-A joint between two pipe-line sections, Fig. 5, may be made with two preformed connection pieces each comprising an inner pipe 21, a conical section 27, inner ring 28 and outer ring 26 (see also Fig. 3, not shown). Cams 29 are provided for prestressing the pipeline sections. The inner pipe 21 and outer ring 26 of each connection piece are welded at 42 and 41 respectively to the inner and outer pipes 11, 12 of the pipe-line sections. The inner pipes 21 are welded together at 43 and a ring 45 is welded at 46 to the outer ring 26 of one connection piece. The gap X between the ring 45 and the other connection piece is then closed by applying an axial force between the cams 29, 47 and the rings are welded together. In other embodiments (Figs. 6, 7, not shown) joints are made using single connection pieces (50) to (55) and (75) to (79) respectively. The gap X may alternatively be closed by a thermal method, e.g. cooling the inner pipe with solid CO 2  or liquid N 2 , or heating the outer pipe.
Patent GB-702122-A (GB)
Title: Pipe sections
Inventor: BRAYTON ROBERT ALEMBERT
IPC: E01F5/00
Filed: 1952-08-13
Abstract: 702,122. Metal pipes. ARMCO INTERNATIONAL CORPORATION. Aug. 13, 1952, No. 20404/52. Class 99 (2). A semi-circular pipe section 10, which may be of corrugated metal, has along one longitudinal edge 11 a series of spaced parallel pairs of cuts defining tabs 13, and along the other edge a series of U-shaped cuts spaced from the edge and defining tongues 14. When two mutually opposed sections 10 are aligned in the assembled condition to form a complete pipe the tongues 14 are bent outwardly and the tabs 13 are bent through the spaces 14a vacated by the tongues and back against the pipe, after which the tongues may be bent back to close the spaces. There may be bent-out seat elements 12 into which the plain edge 11 is fitted, and the tabs and tongues may be disposed on the crests of the corrugations. To render the seams water-tight cover strips may be secured inside the pipe by bolts passing through the spaces 14a, a pitch filling being placed between the strips and the pipe wall. In modifications, (a) the section 10 has one edge offset to form a seating for the plain edge of an opposed section, and (b) both edges of the section are flanged and the tabs and tongues are parallel to the edges.
Patent GB-804345-A (GB)
Title: Improvements in or relating to devices for laterally displacing material lying on the ground
IPC: A01D78/16
Filed: 1955-02-22
Abstract: The subject-matter of this Specification is included in that of Specification 804,344, but the claims differ.
Patent GB-188370-A (GB)
Title: A method of increasing the output of gas from electrolytic apparatus
IPC: C25B15/00
Filed: 1921-07-29
Abstract: 188,370. Vesme, E. July 29, 1921. Gases, obtaining; electrolytes, treating-non- chemically.-The output of a gas-generator is increased by heating the electrolyte, so as to diminish its resistance and the solubility of gases therein; an ordinary voltage is employed. The heating may be effected by steam or hot water coils or by resistances in contact with the receptacle or immersed in the electrolyte. The desired temperature, such as 50‹ C., may be maintained, when once attained, by the electrolytic current. Reference has been directed by the Comptroller to Specification 5123/78.
Patent GB-601268-A (GB)
Title: A new or improved clutch for power transmission
IPC: F16D7/04
Filed: 1945-08-10
Abstract: 601,268. Slipping clutches. STRANK, A. Aug. 10, 1945, No. 20569. [Class 80 (ii)] An overload-slip spring-clutch comprises radial blade-springs 17, slidable in roller guides 20 and trunnions 14 in a driven drum 9, and secured at their inner ends to a ring 11 freely mounted on a swash-ring 3, which is adjusted tiltably about a diametral pin 21 on a driven shaft 1, so as to cause the springs 17 to be repeatedly flexed until they develop sufficient resistance to overcome the load and ultimately produce a one-to-one drive. The inclination of the swash-ring 3 is adjusted by sliding a piston 6 axially in the shaft to cause a trapped fluidcolumn 5 to act, through a second piston 8, on an arm 18 secured to the swash-ring 3.
Patent GB-903755-A (GB)
Title: Device for sharpening double-edged razor blades by hand
IPC: B24D15/08
Filed: 1961-06-08
Abstract: 903,755. Sharpening double-edged razor blades. TOPFER, R. June 8, 1961 [June 8, 1960], No. 20723/61. Class 60. A manually - operated sharpener for double-edged razor blades comprises a housing 1, a pair of supporting members 2, 3, for a blade-holder 21, a pair of rubber or like oppositelyrotating rollers 8, 15, and a member 14 for applying pressure to one of the rollers, such that flattened areas are produced at the contacting portions of the roller peripheries, the blade 22 being suspended from the holder 21 in a position in which the edge is near the median line 29, Fig. 5, of the flattened area. The U-shaped pressure member 14 is spring- loaded to bear at its ends on bearing blocks 6 for the roller-axle 13 slidable between members 2 and 3 and channels formed in the ends of the housing 1. A cam 16 operated by a lever 17 is moved clockwise, Fig. 3 (not shown), to relieve the pressure on the roller 15; the lever 17 must be so moved from the pressure position before the lid of the sharpener can be fitted. A plate 30 is located below the rollers to maintain them at a common level, springs 31, 32 being inserted between the bottom of the housing 1 and the plate 30 which is made of emery powder bonded with a binding agent; some of the abrasive powder is taken up by the rollers during the sharpening operation. Strips 28 of non-slip material are secured to the base of the housing. Natural or synthetic rubber may be used for for the rollers 8, 15. A pocket 26 is provided in the housing 1 for blades 25.
Patent GB-580027-A (GB)
Title: Improvements in the manufacture of opal glass
IPC: C03C3/097
Filed: 1944-10-25
Abstract: 580,027. Opal glass. HADDAN, R. (Corning Glass Oct. 25, 1944, No. 20757. [Class 56] Barium phosphate is used as the opalising agent for an opal glass which is free from substantial amounts of the oxides of the second group metals and from other elements which form insoluble phosphates. The phosphate may be formed by adding barium carbonate and sodium phosphate. B2O3 and Al2O3 may be present and additional opacifying agents such as fluorides, chlorides and sulphates may be used. Preferably the glass contains 40-75 per cent SiO2, 1-30 per cent total alkali metal oxides, 1.5-25 per cent B2O and 0.5-25 per cent P2O5.
Patent GB-1271716-A (GB)
Title: Improvements in or relating to elcetrophotographic copying apparatus
IPC: G03G21/16
Filed: 1969-04-23
Abstract: 1,271,716. Electro-photography. W. ZINDLER [trading as LUMOPRINT ZINDLER K.G.] April 23, 1969 [April 26, 1968], No. 20800/69. Heading G2H. An accessible electro-photographic copier comprises an exposure plate 5 for a moving original, stack of copy sheets 14, switching-on device 17 for charging device 18, opposed image plate 7 and reproduction plate 22, developer device 27, heater 40, fan 39, copy-receiving plate 42, and pairs of guide rolls, one roll of each pair being driven and having a fixed mounting and the other roll of each pair movable away from the driven roll. The switching-on and charging devices are withdrawable through openable doors 54 and 55, the reproduction plate (together with rolls 23 and 25) and the developer device are withdrawable through openable door 49, the copyreceiving plate (together with rolls 44 and 46) is withdrawable through an opening 47, and a partition 37 (separating the developer device and the heater) is lowerable about a pivot on removal of the developer device.
Patent GB-1075204-A (GB)
Title: A buoyant body and method of making same
IPC: E02B3/26
Filed: 1965-05-18
Abstract: 1,075,204. A moulded inflatable float. K. BEYER-OLSEN and O. STEFFENSSEN. May 18, 1965, No. 20977/65. Heading B5A. An inflatable hollow body for use as a float, buoy or fender comprises a soft bladder part (1) and a stiffer part (6) apertured, e.g. to receive a rope, and it is made in a shell mould in two stages, the first to cast the part-spherical bladder portion (2) in the upper part of the shell mould (1) by combined rotation and tilting of an introduced plastisol, and the second to introduce a further plastic charge into the combined shell mould, rotating and tilting to mould the fastening member 6 in the conical portion of the shell mould and about the core (3), and causing the plastics (6) to overlap the bladder portion (2) at the shell mould joint (S).
Patent GB-260378-A (GB)
Title: Improvements in horns for gramophones
IPC: G11B33/06
Filed: 1926-05-20
Abstract: 260,378. Langley, J. B. May 20, 1926. Cases with internal horns. - An internal horn which passes downwards from the tone-arm, extends horizontally under the motor, and then issues vertically upwards. is provided with a backward bend C at the inner end. The mouth of the horn may be above, on a level with, or below the motor-board, and may be at the side, front or back of the cabinet.
Patent GB-1009291-A (GB)
IPC: B01J23/74
Filed: 1964-05-21
Abstract: Nickel supported on magnesium titanate is used as a catalyst in the cycle reforming at about 700 DEG  C. of a light gasoline fraction in the presence of steam.  Specification 1,001,976 is referred to.ALSO:Nickel, iron, platinum or cobalt are deposited on catalytic supports of magnesium aluminate (Al2O3 : MgO) or titanates (TiO2 : MgO or TiO2 : 2MgO).  Specification 1,001,976 is referred to.
Patent GB-188398-A (GB)
Title: Method and apparatus for molding soap
IPC: C11D13/14
Filed: 1921-08-09
Abstract: 188,398. Jackson, W. J. Mellersh-, (American Cotton Oil Co.). Aug. 9, 1921. Cylinder machines; cooling apparatus; cooling moulded articles; delivery; feeding; cleaning-apparatus; moulding soap. -Relates to the treatment of molten soap by charging it into moving moulds and subjecting it therein simultaneously to cooling, moulding and compression, as described in Specifications 164,339, 175,959, and 176,761, and consists in enclosing the soap in the moulds between oppositely-disposed pistons. A cylindrical series of moulds 9 fitted with pistons 10 mounted within a brine tank 1, is associated with an endless chain 70 carrying pistons 74 adapted to enter and close the moulds prior to their immersion in the brine and to be withdrawn therefrom prior to the ejection of the moulded soap cakes. The chain 70 passes around sprockets 75, 76, 77, 78 of which the sprocket 76 is adjustable by a lever 80 and screws 81 to take up slack. To take up shrinkage and effect compression of the soap the pistons 10, 74 are controlled respectively by inner cam-tracks 49, 58, 63 and enter camtracks 73 which may be adjustable. The molten soap is fed by screws 16 from a hopper 13 heated by a steam-jacket 14 into the moulds 9 which then pass beneath a cooling-jacket 69 opposite to which are arranged brine sprays. The moulds are next engaged and closed by the pistons 74 and enter the liquid in the tank 1 where the soap is cooled, moulded and compressed. The moulded cakes are ejected from the moulds by the pistons 10 under the influence of a cam 28 and are detached by rotary arms 35 and delivered to a shoot 90. Brushes 83, 92 clean the plungers 74, 10 of adhering soap.
Patent GB-1436704-A (GB)
Title: Multi-spindle lathe having a tool wear compensation mechanism
IPC: B23Q23/00
Filed: 1972-05-06
Abstract: 1436704 Setting and gauging; multi-spindle lathes WICKMAN MACHINE TOOL SALES Ltd 1 May 1973 [6 May 1972] 21242/72 Headings B3B and B3T A multi-spindle lathe having a plurality of spindles, and at least one tool slide 14, comprises a tool wear compensating mechanism comprising an electrical stepping motor 19 mounted upon the slide to adjust the position of a slide 14, the motor being operatively connected to an adjustment means 33, and an electrical control device for causing operation of the motor 19, the control device being programmed with tool wear parameters based on measuring a previously machined workpiece and with information on any predetermined errors of alignment of a spindle with a slide to eliminate errors due to the machine tool. The motor 19 drives by a toothed belt 25, or alternatively by gears, a sleeve 44 of a screw thread adjustment means 33 to adjust the position of the slide 14 relatively to its main drive member 20 which is actuated by a cam. The motor also drives through a second toothed belt 26 a screw adjusting device for an end stop 29. In the screw thread adjustment means 33 the sleeve 44 rotates a pair of drive balls (Fig. 4, not shown) that engage in a pair of longitudinal grooves in a screw spindle to ensure rotary drive and allow longitudinal movement. The motor 19 can be manually turned by a knob 22 for setting purposes. Backlash in the adjusting thread of the end stop 29 is eliminated by clamping a split threaded bore on to a threaded spigot (Fig. 7, not shown).
Patent GB-978602-A (GB)
Title: Production of detergent alkylate
Inventor: OLDHAM WILFRED JOHN
IPC: C07C2/10
Filed: 1962-06-01
Abstract: Detergent alkylate is produced by dimerizing a straight chain mono-olefin in the C5 to C8 carbon number range by passing at 20 DEG to 150 DEG  C. in the liquid phase over a transition metal oxide catalyst, e.g. oxides of nickel, cobalt, manganese or chromium or mixtures thereof and thereafter condensing a fraction of the dimerization product in the C10 to C16 carbon number range with benzene in the presence of an alkylation catalyst.  Suitable feedstock used include (1) C5 to C8 mono-olefin fraction obtained by thermally cracking a high molecular weight paraffinic hydrocarbon; (2) a C5 to C8 fraction containing olefins and paraffins obtained by dehydrogenating C5 to C8 normal paraffins, any unreacted C5 to C8 paraffins being recycled to the dehydrogenation reactor; and (3) C5 to C8 mono-olefins which have been isolated from the product of the polymerization of ethylene, propylene or butene. The dimerization catalyst is preferably deposited on a support of silica, silica gel or a silica-alumina catalyst.  The dimerization can take place under superatmospheric pressure and the C10 to C16 fraction is recovered by fractional distillation under reduced pressure. The condensation with benzene preferably takes place in the liquid phase at -20 DEG  to 100 DEG  C. in presence of aluminium chloride or anhydrous hydrogen fluoride, any unreacted benzene being recycled. The alkylate products may be sulphonated by conventional means.  The examples describe the preparation of alkylates using (1) a nickel oxide silica alumina catalyst and a hexene-1 feedstock, 1 mol. of the dimer produced being condensed with 20 mols. of benzene; (2) catalysts prepared by heating silica-alumina impregnated with potassium permanganate or manganese nitrate and n-hexenes; and (3) a catalyst prepared using nickel chloride.
Patent GB-136293-A (GB)
Title: Improvements in Fittings for Aeronautical Machines.
Inventor: MOONEY DERMOT JOSEPH
IPC: B64C1/06
Filed: 1918-12-19
Abstract: 136,293. Mooney, D. J. Dec. 19, 1918. Framework.-In built-up metal spars, the webs and flanges are stiffened by internal tubular distancepieces and external plates at the positions where bolts pass through for fixing wiring-plates or struts. A bolt b for securing a wiring- plate h passes through the web walls d of a built-up spar a, the walls being stiffened by an inner tubular distance-piece e and external riveted plates c. The plates c may be continued and flanged so as to be riveted to the top and bottom flanges. Where a vertical and an horizontal bolt cross, the two distance-tubes e may be connected bv a plate; or two half-tubes or channel distance-pieces with flanges may be used, the flanges being riveted together at the centre.
Patent GB-599378-A (GB)
Title: Improved polymerization process
IPC: C08F2/00
Filed: 1944-10-31
Abstract: <PICT:0599378/IV/1> In the low-temperature polymerization of olefines, or mixtures thereof, in the presence of a Friedel-Crafts catalyst to form plastic or rubbery products and in which the reaction mixture is mechanically agitated, turbulence is induced immediately adjacent the shaft of the agitator by flowing along the shaft a stream of liquid normally added to the polymerization mixture (see Group II).  Preferably, all or part of the diluent, e.g. alkyl halide, carbon disulphide, is fed into the reaction vessel along the agitator shaft.  In the stuffing-box 18 of the agitator shaft 16, channel 23 is provided for the introduction of liquid along the shaft.  The process is particularly suited to the copolymerization of tertiary mono-olefines, e.g. isobutylene with diolefines.