baber/WOPTO huggingface dataset:
Patent GB-925664-A (GB)
Title: Rigid connection for two mine gallery support arch segments abutting end-to-end
IPC: E21D11/22
Filed: 1959-09-08
Abstract: 925,664. Mine supports. BOCHUMER GESELLSCHAFT FUR GRUBENAUSBAU UND TECHNIK. Sept. 8, 1959 [Sept. 13, 1958], No. 30665/59. Class 20 (1). Mine arch or ring support segments 1, 2 are secured end to end by strips 3, 4, in one of which is welded or press-fitted bolts 7 passing through bores in the segments and secured at the second strap by wedges 10 or nuts. During erection the strap 3 is provisionally held to the segment 1 by a spring ring 12, a shear pin, or by a destructible element.
Patent GB-992881-A (GB)
Title: Improvements in cutting tools for lathes and the like machine tools
Inventor: REEVE LIONEL KENNETH
IPC: B23B27/16
Filed: 1963-08-02
Abstract: 992,881. Cutting tools. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 4, 1964 [Aug. 2, 1963], No. 30776/63. Heading B3B. A cutting tool comprises a holder 1, a plate  2 dowelled to the holder, a triangular shaped anvil 3 dowelled in a corresponding recess in plate 2, a triangular shaped cutting bit 4, a chip breaker 8, and a clamping plate 7. The latter is of wedge-shaped cross-section, and has a tenon 6 which fits into a keyway 5 in plate 2. A screw 9 clamps plate 7, and its axis is perpendicular to the top face of plate 7.
Patent GB-752541-A (GB)
Title: Improvements in or relating to rock drilling machines
IPC: E21B44/02
Filed: 1954-10-26
Abstract: 752,541. Drilling machines. SALZGITTER MASCHINEN AKT.-GES. Oct. 26, 1954 [Oct. 28, 1953], No. 30777/54. Addition to 726,065. Class 83 (3). [Also in Group XXIII] A rock-drilling machine comprises a feed motor 12 controlled by an automatic regulator 23 to displace the cutter-head 1 in dependence on the feed pressure, as claimed in the parent Specification, the means transmitting the feed to the cutter-head consisting of a flexible endless element 8 guided over rollers 9, 10. The motor 12 rotates the chain-wheel 9 through gearing 13 to move the drill-head 3, 4, and its carriage 6 along a cylindrical guide 25. The feed-motor assembly 14, having a portion 15 sliding in the drill-carriage 6, is urged rearwardly by a spring 16 and the regulator 23 is held open by a spring 22. When the resistance to drilling becomes excessive, the springs 16, 22 are compressed and the regulator closes to reduce the feed-motor speed. In a modification, the speed of a D.C. shunt feed-motor 12a, Fig. 3, - is cut down by a rheostat-control 23a.
Patent GB-275467-A (GB)
Title: Improved closet seat
IPC: A47K13/00
Filed: 1926-12-06
Abstract: 275,467. Lewitz, H. Dec. 6, 1926. Closet seats have the front a bent or curved from one piece of wood; the rear ends are joined by a transverse member b. Specification 11686/04 is referred to.
Patent GB-211204-A (GB)
Title: Improvements in apparatus for the control of vehicular and pedestrian traffic
IPC: G08G1/09
Filed: 1922-11-13
Abstract: 211,204. Gordon, J. M. Nov. 13, 1922. Crossing-gates and barriers.-For controlling vehicular and pedestrian traffic, barriers 11, 14 are mounted in a tower 1 which is erected on the pavement 2 opposite to the stand 3. The barriers 11, 14 are operated from the observer's nest 1 in such a manner that when the barrier 11 is down to arrest road traffic, the barrier 14 is raised to permit pedestrian traffic and vice versa. The barriers may be made of rubber, leather, steel &c. and may be controlled mechanically, pneumatically or electrically. Instead of or in addition to the barriers 11. 14 a visible air or like screen may be projected from the tower or road.
Patent GB-1023179-A (GB)
Title: Fractionation of mixtures of agarose and agaropectin
Inventor: POLSON ALFRED
IPC: C08B37/00
Filed: 1964-08-04
Abstract: A process for the fractionation of mixtures of agarose and agaropectin comprises bringing the mixtures, while in aqueous colloidal solution, into admixture with polyethylene glycol of sufficient concentration to precipitate agarose, said concentration being a function of the molecular weight of the polyethylene glycol, and at a temperature above that at which gelling of the colloidal solution will occur during the precipitation and below the temperature at which substantial degradation of agarose will occur within the period at which it is subjected to said temperature, thereby producing a precipitate in which the ratio of agarose to agaropectin is higher than in the original mixture, and a residual liquid colloidal dispersion in which the ratio of agarose to agaropectin is lower than in the original mixture, and separating the precipitate from the said residual dispersion.  The process is applicable to the fractionation of natural agars, prepurified agars, and crude agar extracts from seaweed.  The precipitation may be effected at 80-90 DEG  C., and the temperature then allowed to fall to 60-80 DEG  C. before separation of the precipitate from the residual dispersion. The precipitate may be separated by filtration and washed with hot polyethylene glycol.  The polyethylene glycol may itself be brought into aqueous solution.  A concentrated agar solution may be treated in stages by initial mixing with sufficient polyethylene glycol to produce partial precipitation, together with lowering of the viscosity, followed by further addition of polyethylene glycol until a predetermined final concentration of polyethylene glycol is obtained. Further agar solution may be added to the reaction mixture, and the deficiency of polyethylene glycol corrected by addition of more polyethylene glycol in pure form or as an aqueous solution.  When one precipitation step produces incomplete fractionation, the fractionation may be carried out in stages. Fractional precipitation may be effected by increasing the precipitant concentration continually or in stages, to yield agarose fractions of different gel strengths. Any precipitate formed may be re-dissolved and re-precipitated to ensure complete fractionation or purification. The agaraose fractions may be further purified by electrophoresis.  In one embodiment, the precipitation is carried out in presence of an electrolyte, such as sodium chloride or acetic acid.  An agaropectin product may be precipitated from the residual colloidal dispersion, from which the agarose has been separated, by cooling the dispersion to below 20 DEG  C. and adding acetone.  The precipitated agaropectin may then be freed from polyethylene glycol by solvent extraction.  Examples describe the fractionation of Spanish agar and Gelidium agar.  The processing conditions are controlled by determination of gel strength, sulphur content, sulphate content, or by electroendormosis measurements.
Patent GB-449604-A (GB)
Title: Improvements in or relating to railway points and crossings
IPC: E01B7/04
Filed: 1934-10-31
Abstract: 449,604. Railway points and crossings; chairs. ALLEN, J. J., 5, Bridge Street, Crook, Durham. Oct. 31, 1934, No. 31283. [Classes 104 (i) and 104 (ii)] In railway points and crossings of the kind wherein, where the lines cross or diverge, the level of the rails of the branch line 6 is higher than the level of the rails 3, 4 of the main line to permit the wheel flanges on the branch line to clear the main line rails, the switch rails 1, 2 at the points are disposed in the branch line 6 and carry extensions 8 beyond the normal toes 9, said extensions being of the same width as or slightly less than the width of the normal rail heads, and sloping downwards from the toes 9 to zero at the free ends to form ramps to switch traffic from the main line to the branch line when the points are in the position shown in Fig. 1. The branch rails are broken when they cross the main rails 4, 14, the gaps being bridged by sections 17 pivoted at 18 and adapted to be moved into parallelism with the rails 4, 14 to allow main line traffic to pass. The points 1, 2 and the sections 17 may be interconnected by linkwork 20, 21 and 23..27 to move simultaneously. The points 1, 2 are connected to the rails 12, 13 by hinges each comprising a block 30 connected to the rails 12, 13 by a pair of plates 29, and a block 32 connected to the points by plates 31, the two blocks having tongue and socket connection 37, 38, while the head 34 of the hinge pin 33 fits in a recess 35 in the block 32. The sections 17 are connected to the rails 12, 13 by means of pins 39 on the sections engaging hinge blocks 40 connected by plates 41 to the rails 12, 13. The slide chair for the points 1, 2 comprises a jaw 45 to which the main rail 3 is bolted, and a jaw 47 with an inclined face 49 between which and the rail 3 a wedge 50 is driven. The points slide on a replaceable pawl 51 resting on the jaw 47. The rod 7 connecting the points may slide on a pair of spacing rollers to take the pressure off the pad 51 during movement of the points.
Patent GB-1006748-A (GB)
Title: Excavator wheel involving centrifugal discharge therefrom
IPC: E02F3/24
Filed: 1964-08-04
Abstract: 1,006,748. Bucket wheel excavators. L. SOVA. Aug. 4, 1964 [Jan. 6, 1964], No. 31370/64. Heading E1F. Buckets 1 pivotally mounted between the side plates of an excavator wheel adjacent excavating tools 4 mounted around the circumference of the wheel arc coupled by a pull mechanism 2 rotatably connected to the crank pin of a crank arm 3 that during excavating operations of the wheel is angularly stationary with respect to the axis of rotation of the wheel. This construction of excavator wheel permits of satisfactory centrifugal discharge of excavated material collected in the buckets therefrom.
Patent GB-193493-A (GB)
Title: Improvements in apparatus or machines for untwisting wire ropes or strands of wire ropes
IPC: D07B7/18
Filed: 1921-11-23
Abstract: 193,493. Macdonald, J., and Gibson, F. C. Nov. 23, 1921. Untwisting ropes.-A rope 14 to be untwisted is drawn from a drum 13 having a drag-rope 18, the core passing through a hollow driving-shaft 8 of a revolvable structure to a winding-drum 69, and the strands passing to two sets of bobbins 24, 33 carried in flyers 27, 36, which are journaled in plates 1, 2, 3 of the structure. The plates are secured to the shaft 8 and driven by a pullev 9 thereon, and are supported on rollers 4, 6. The trunnions of the flyers 36 extend forward to form hollow stays 21, through which the strands to the rear set of bobbins 33 pass, and the trunnions of the flyers 27 extend backward to form stays 43. The flyers are maintained horizontal by cranks 47, on the trunnions of the flyers 36 and on the stays 43, engaging holes in a heavy ring 46 supported eccentrically to the shaft 8 on rollers 48 Each set of bobbins is driven by a rope 58 passing over, or given one complete turn around, pulleys 55, 57 mounted on the flyer trunnions and the stays respectively, the rope passing between guide-pulleys 59, 60 to a tensioning pulley 61 provided with a drag-device 62. Pulleys or sprockets 54 secured to the pulleys 55 communicate motion through belts or chains to shafts 52 journaled in the flyers and thence to bevel-wheels 50 each forming one flange of the bobbins. The speed of rotation of each set of bobbins can thereby be varied independently of the speed of rotation of the structure. The bobbins are detachably mounted in their flyers and each is formed with a tapered barrel 74 and a detachable flange 75.
Patent GB-604049-A (GB)
Title: Improvements in or relating to endless tracks for amphibious vehicles
IPC: B62D55/10
Filed: 1945-11-22
Abstract: 604,049. Endless tracks for vehicles. FOOD MACHINERY CORPORATION. Nov. 22, 1945, No. 31476. Convention date, Feb. 15, 1943. [Class 79 (i)] [Also in Group XXXIII] In a track laying mechanism for amphibious vehicles, the lower belt run is provided with a series of closely mounted bogie wheels on fixed axes, there being a gap in the series in which a yoke is mounted for pivotal movement in a vertical plane, the yoke carrying a bogie wheel, said yoke and wheel being free to move under gravity so that when the vehicle is in water and the lower belt run sags off the fixed bogie wheels the pivoted. bogie wheel follows the belt and maintains its alignment. A spring loaded jockey wheel for tensioning the track is also provided. As shown in Fig. 1 the vehicle comprises a hull 11, with pontoons 12, idler and driving sprockets 14, 15, idler bogie wheels 28 and tensioning jockey wheel 66. The wheels 28 consist of a hub 30, Figs. 4 and 5, a pair of flanges 31 and wheels with tyres 32. Each bogie assembly is mounted on an axle 27 which is journalled in brackets secured to longitudinal channel members. At the centre rotatably mounted at 41 is a yoke comprising a pair of plates 40. The plates support a pair of bogies 36 which are identical with the bogies 28. A pair of buffers 45 are mounted on this assembly to limit the upward movement of the bogies 36. A pair of outer plates 50 are secured to the yoke and are provided with indents 51 which run in a recess 56 to limit the downward movement of the yoke. The endless belt 85 has central guiding lugs 88 which are engaged between the wheel flanges 31. A spring-loaded jockey wheel 66, Fig. 2, mounted on an arm 69 and loaded by springs 76 serves to tension the track.
Patent GB-699819-A (GB)
Title: Process for the production of new aldheydes
Filed: 1950-12-28
Abstract: The invention comprises aldehydes of the formula <FORM:0699819/IV (b)/1> where R1 is alkyl, aralkyl or cycloalkyl, R2 is a cyclic dicarboxylic acid residue and X is hydrogen or nitro. These are made by catalytic hydrogenation of the corresponding acid halides, preferably above 100 DEG  C. in an inert solvent such as xylene, tetrahydronaphthalene or decahydronaphthalene.  A noble metal catalyst is used, e.g. palladium or platinum, whose activity is reduced, e.g. by the addition of an organic sulphur compound such as thiourea.  Alternatively a p-nitro group may be introduced by nitrating the unsubstituted aldehyde.  Preferred products are 2-phenyl-2-alkoxy-1-phthalimido - propionaldehyde, 2 - phenyl - 2 - alkoxy-1 - succinimido - propionaldehyde and their p-nitro derivatives.  The process is applicable to all four stereoisomeric forms of the compounds.  An example is given of the preparation of threo - 2 - phenyl - 2 - methoxy - 1 - phthalimido - propionaldehyde (and p - nitrophenylhydrazone) and its nitration to the 2-p-nitrophenyl compound.  The starting materials may be made as in Specification 699,818.
Patent GB-758461-A (GB)
Title: Improvements relating to the surface treatment of polyethylene-containing structures
IPC: B29C48/08
Filed: 1953-11-13
Abstract: Films or tubes of polyethylene or copolymers of ethylene with isobutylene, vinyl acetate, styrene or vinyl chloride are extruded into an atmosphere containing at least 0.05 per cent ozone, the film or tube being maintained at a temperature of at least 150 DEG  C. A film may be formed by extruding a molten polymer through a slot orifice or by milling a molten polymer on closely spaced calender rolls.  The atmosphere of ozone may be maintained between the point of extrusion and the quench bath and during its passage through this atmosphere the film may be subjected to ultra-violet light.  The molten polymer may be at a temperature of 150 DEG  to 325 DEG  C. and the quench bath at a temperature of 25 DEG  to 95 DEG  C.  The quench bath may contain one or a mixture of chlorine, bromine, iodine, fluorine, hydrochloric acid, hydrobromic acid, hydroiodic acid, hydrofluoric acid, hydrogen peroxide, nitrous acid, alkaline hypochlorites, concentrated nitric acid or mixtures of concentrated nitric and sulphuric acids.  After quenching, the film may be neutralized with aqueous sodium hydroxide.  The process of the invention improves the receptivity of the film or tube for aniline and rotogravure printing inks and for coatings of synthetic resins or cellulose derivatives.  Specifications 557,544, [Group IV], 681,517, [Group VIII], and 755,738 and U.S.A. Specification 2,430,860 are referred to.
Patent GB-299883-A (GB)
Title: Tubing
IPC: B21C37/09
Filed: 1928-10-31
Abstract: 299,883. Bundy, H. W. Nov. 4. 1927, [Convention date]. Cased or compound forms: tubes.- Tubing is made of more than one thickness of multiply metal at least one of which is non-corrodible. In an example multiply stock 1, Fig. 1, consisting preferably of two plies of metal united by a layer of solder, is drawn from a supply 5 through a solder bath 6 to a battery of forming rolls arranged as shown in Figs. 6- 10, then to a sweating die 11 which melts the solder and causes the layers to adhere after which the tube is passed through sizing dies 12, and a cooling water bath 13. Stock for a radiator tube or for a gasoline line may have copper or brass on one side and steel on the other, the non- corrodible copper or brass being on the inside. When it is desired to make a tube with one surface free from solder, the stock is treated with solder on one side only. A suitable form of tube is shown in section in Fig. 13.
Patent GB-467150-A (GB)
Title: Improvements in or relating to the manufacture of cigarettes
IPC: A24C5/52
Filed: 1936-11-18
Abstract: 467,150. Cigarette-making machines. UNIVERSELLE CIGARETTENMASCHINEN-FABRIK J. C. MULLER & CO. Nov. 18, 1936, No. 31589. Convention date, May 11. [Class 130] Transverse strips, severed from a carpet of tobacco separated lengthwise by filter strips and forwarded by a conveyer belt, are deposited in the trough of a continuousrod machine. Tobacco is fed from a hopper on to a belt 3 between filter strips 10 fed by reels 6, and is prevented from being deposited on the strips by partitions in the hopper. The tobacco is compressed by a roller 11 and while the forward end of the carpet is supported on a slide 12b above the trough, strips having a width equal to the width of the trough are severed by a knife 13 coacting with a fixed knife 14. When the slide is withdrawn by a cam 32 the strip is deposited on a conveyer belt 20 in the trough, so that its forward end abuts against the rear end of the previously severed strip.
Patent GB-1118641-A (GB)
Title: Raster correction circuit
IPC: H04N3/237
Filed: 1965-07-23
Abstract: 1,118,641. Cathode-ray tube circuits. RADIO CORPORATION OF AMERICA. 23 July, 1965 [31 Aug., 1964], No. 31616/65. Heading H4T. A circuit for correcting " pincushion " distortion at the sides of a television raster by varying the horizontal scanning waveform as a function of the vertical scanning waveform utilizes a saturable reactor 70 having a " control winding 71a, 71b in which a current having the required function is caused to flow and further windings 73a, 75a connected effectively in shunt with and 73b, 75b connected in series with the horizontal deflection coils H, H<SP>1</SP> the arrangement being such that the impedances of the further windings vary in a differential manner in response to current variations in the control winding so that the load across the horizontal scanning transformer 53 is maintained substantially constant. For complete correction the horizontal scan should be controlled by a parabolic function of the vertical scan but due to what is stated to be apparent time delay effects in the operation of saturable reactor apparatus the actual current flowing in the control winding should have an asymmetrical parabolic form. This is effected by supplying the latter winding with a voltage produced by combining (at point A) a clipped positively going vertical scan saw-tooth voltage, via diode 85 with a shaped and delayed sawtooth voltage of opposite polarity and smaller amplitude via resistor 91 and capacitor 93, such voltage when integrated by the control winding producing the required asymmetrical parabolic current variation. For magnetic biasing of the reactor a voltage derived from the cathode circuit of the vertical output stage 41 and smoothed by capacitor 46 is utilized.
Patent GB-931152-A (GB)
Title: Improvements in or relating to apparatus for separating materials
IPC: B07B4/08
Filed: 1958-10-08
Abstract: 931,152. Screening apparatus. H. C. ROTHERY. Oct. 7, 1959 [Oct. 8, 1958; Feb. 19, 1959; March 16, 1959], Nos. 32051/58, 5720/59 and 9101/59. Class 117. A tube 2, perforated at 11, houses a conveyer screw 1 driven by a motor 3 at its upper end, whereby granular material, e.g. grain, gravel or sand, is conveyed in a helical path from the lower entrance end towards the motor end of the tube and is centrifugally thrown against the tube wall; the larger material passes from an outlet 13 and the smaller particles pass through the perforations and are collected in a trough 16 from the lower end of which they fall. The trough is pivoted at 15 and hangs from a flexible member 17. The upper portion of the perforated part is surrounded by a shield 14, and the upper end of the screw is received in a bearing in a plate 8 and the lower end is free. Hot air may be passed into the shield or into the lower part of the tube, whereby it flows upwardly to dry and clean the material. The tube may be perforated along its whole length or may be perforated in sections of different mesh. The perforated part may comprise spaced parallel members, spaced circular members, or a helically coiled member.
Patent GB-193952-A (GB)
Title: Improvements in means for suspending and drawing curtains
IPC: A47H5/032
Filed: 1921-11-30
Abstract: 193,952. Samuel, T. Nov. 30, 1921. Curtains, drawing and suspending.-A curtain pole b of C section has a curved shrouding plate l secured to the top of the pole and extending downwards clear of the pole to approximately the level of the lower surface thereof, so as to screen the slot and the rollers e.
Patent GB-260800-A (GB)
Title: Improvements in domestic grates or fire places
IPC: F24B1/182
Filed: 1925-12-19
Abstract: 260,800. Southall, J. Dec. 19, 1925. Combined open fireplaces and cooking-stoves; outlets to chimneys; boilers, arrangement of. - The oven 16 of a combination stove is removably fitted in order to allow access to the removable outlet flue pipe 27, which is preferably formed with a bottom flange 29 for bolting to the underside of the top plate 22. In the stove shown, the connections between the service pipes 33, 34 and the flow and return pipes 30, 31 of the boiler 8 are made in the rear oven flue so as to be accessible when the oven is withdrawn. The back of the oven is formed 'with two vertical recesses to accommodate the pipes 33, 34. The stove comprises a grate 1 raised only sufficiently to allow a shallow ash-pan below it, a hob 5 on each side, and fixed or detachable shelves 35 in the spaces formed above the hobs and at each side of the oven. The gases pass both through an opening 15 above the fire and through the boiler flues 9, 10 in the oven flues, a damper 14 pivoted at 13 determining the proportion taking either course, according to whether it occupies the position shown in full or broken lines.