baber/WOPTO huggingface dataset:
Patent GB-1013802-A (GB)
Title: Method and apparatus for driving mine galleries
IPC: E21D9/00
Filed: 1962-08-02
Abstract: 1,013,802. Mineral-mining equipment. SAARBERGWERKE A.G. Aug. 2, 1962 [March 28, 1962], No. 29779/62. Heading E1F. Equipment for driving a gallery in which blasting is involved in the driving comprises an armoured conveyer 1 and a cutter machine 2 that can be moved to and fro along the conveyer, and a cutter loader assembly 8 secured to the side of to move in unison with the cutter machine. The machine 2 has a vertically swingable cutter drum 4 positioned ahead of the body of the machine. The machine is advanced along the conveyer so that the cutter drum is sumped into the end face of the gallery to form an opening into which the conveyer can be advanced. The machine is then withdrawn along the conveyer from the face, which is then blasted down on to the conveyer so that much of the blasted material can be immediately removed thereby. On subsequent advance of the machine for repeating the cycle of operations material left to the side of the conveyer is loaded on to the conveyer by the cutter loader assembly 8. Drills for forming holes in the face for blasting charges can be mounted on the assembly 8.
Patent GB-409225-A (GB)
Title: Improvements in spring arrangements for track-laying vehicles
IPC: B62D55/108
Filed: 1933-10-27
Abstract: 409,225. Endless - track vehicles. POLLAK, J. E., 20, Holborn, London.- (Aktiebolaget Bofors ; Bofors, Sweden.) Oct. 27, 1933, No. 29894. [Class 79 (i).] A spring arrangement for the supporting rollers 9-12 of a track-laying vehicle in which one roller of each pair is supported through the intermediary of a strong spring by an arm carrying the other roller, is characterized by the feature that the stiff spring 17 is movably mounted relatively to the arm 16 and the fixed end of the spring is connected with the arm 16 through the intermediary of a weak spring 20 which is only intended to absorb slight shocks. In the construction shown, the roller 10 is mounted on an axle 3 between a pair of arms 16 rigidly connected together by a sleeve 15 rocking on a shaft 13 fixed to the vehicle frame 1. The axle 4 of the roller 10 is mounted in eyes of a pair of stiff springs 17 fixed at their other ends to arms 19 secured to a shaft 22 rocking in a boss 24 integral with the arms 16. The outer ends of the arms 19 bear against the weak springs 20 enclosed in housings 21 formed in the arms 16. The springs 20 are adjustable. The rocking movement of the springs 17 relatively to the arms 16 is limited by discs 26 on the springs 20 adapted to bear against the arms 16, so that while the springs 20 absorb light shocks, on heavy shocks occurring the discs 20 abut against the arms 16 and the strong springs 17 are flexed. Movement of the springs 17 in the other direction is checked by rubber blocks 27 fixed to bosses on the arms 16.
Patent GB-814331-A (GB)
Title: Improved method for manufacturing piperazines
IPC: C07D295/023
Filed: 1956-10-02
Abstract: Piperazines are made by passing a stream of an alkanolamine HO-CHR-CHR-NH2 in the presence of hydrogen at 100-1500 p.s.i. over a bed of a supported reduced nickel catalyst maintained at 125-300 DEG C.; in the formula R is H or C1-C4 alkyl, provided that the molecule has no more than 6 carbon atoms in all.  The alkanolamine may be used in the liquid or vapour phase, preferably the latter at a pressure of 100-1000 p.s.i., e.g. 400-600 p.s.i.  The temperature is preferably 140-270 DEG  C., especially 180-240 DEG  C. for liquid phase operation or 200-230 DEG  C. for vapour phase.  A suitable catalyst has 35 per cent by weight of nickel mounted on activated alumina, in the form of pellets in a fixed bed or a free flowing powder in a fluidized bed.  A preferred arrangement is to pass a vertical stream of alkanolamine and hydrogen through a vertical bed of catalyst, the outflow being removed continuously and the piperazine extracted therefrom by standard methods.  The residence time may be 5 seconds to 10 minutes.  In liquid phase operation a static atmosphere may be maintained over the catalyst but it is preferred to have a continuous flow and in the vapour phase it is desirable to have sufficient hydrogen to maintain the alkanolamine as a saturated vapour, i.e. at least 2 mols. and preferably 5-20 mols. of hydrogen per mol. of alkanolamine.  Examples show the conversion of isopropanolamine to 2:5-dimethylpiperazine (cis and trans) with some 2:5-dimethylpyrazine and tarry residue.  About 70-90 per cent by weight of isopropanolamine is converted and the piperazine contains 45 per cent or more of trans-isomer.  Other 2:5-dialkylpiperazines can be made similarly, e.g. 2:5-diethylpiperazine from 1:2-butanolamine, and also piperazine itself from ethanolamine.  Reference has been directed by the Comptroller to Specifications 791,050 and 799,558.
Patent GB-1170557-A (GB)
Title: Improvements in or relating to a Clamping System
Inventor: WALKER WILLIAM RAY
IPC: F16L3/223
Filed: 1968-06-24
Abstract: 1,170,557. Clamps. U.C.C. FILTERS (HYDRAULICS) Ltd. 24 June, 1968, No. 29956/68. Heading E2B. A clamp for simultaneously clamping a number of tubes or tubular articles 41, 43, 45, 47, 49, 51 comprises one or more sections 9, 10 each consisting of a pair of U-shaped members pressed out of sheet metal and arranged to face each other, whereby respective recesses 27, 29 in the two members co-operate to provide apertures to receive the tubes, laterally extending flanges 28, 30 associated with the respective recesses 27, 29, and resilient grommets 38, 42, 44, 46, 48, 50 engaged between the flanges 28, 30 and the tubes. The grommets are made resilient by providing them with a slit 40, to enable them to grip the tubes securely when the U-shaped members are urged together, as by elongated 'bolts 52 extending through the assembly and equipped with locking nuts 55. In order that uniform spacing of the tubes will be maintained when, as shown, the tubes are of different diameters, the recesses are all made of uniform size to provide apertures of equal diameter, suitable grommets being selected -to reduce the diameter as necessary to receive the respective tubes. Instead of using plain grommets, as shown in Fig. 4, shouldered grommets (Fig. 6, not shown) may be used whereby they may be more easily centered with respect to the U- shaped members.
Patent GB-714677-A (GB)
Title: Improvements relating to dynamo-electric machines
Inventor: WHITELEY AUSTYN LESLIE
IPC: H02K3/26
Filed: 1950-12-08
Abstract: 714,677. Windings for dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 10, 1951 [Dec. 8, 1950], No. 30111/50. Class 35 A " printed winding for a dynamoelectric machine rotor comprises a series of conductors mounted on an insulating sheet or tube which is either wrapped round or slid over the outer surface of therotary armature core. As shown in Fig. 1, an insulating sheet 10 carries conducting paths 11 on its upper side and 12 on its under side which are joined by spot-welding through the insulating sheet at points a, b, the latter being connected to commutator segments C. Alternatively, the two sets of conducting paths may be on separate insulating sheets placed together, or, in a further modification, Fig. 2, the axial conducting paths 11 may be on one insulating sheet 10 and the end connections 14, 15 on separate insulating strips 16, 17. Instead of spot-welding, the conductors may be soldered together over the edge of the insulating sheet and the conductors may have parallel extensions at one end to act as commutator segments. The conductors may be formed by printing with protective ink and etching or by stamping from copper foil. The conductors alone may rotate, the armature core being stationary.
Patent GB-657518-A (GB)
Title: Improvements in or relating to the concentration of iron ore
IPC: B03C1/015
Filed: 1948-11-19
Abstract: <PICT:0657518/III/1> Iron ores containing calcium carbonate, naturally present or added, are roasted in an oxidizing atmosphere, e.g. at 900-1050 DEG  C. to produce free lime, and thereafter in a reducing atmosphere at a lower temperature, say 500-750 DEG  C. to convert the ferric oxide to ferrosoferric oxide, the material being then subjected to magnetic concentration.  As shown, crushed ore is fed from hopper 7 to a rotary brick-lined kiln 9 formed with an oxidizing section 23, cooling section 24 and reducing section 25. Blast furnace, coke oven, producer, &c. gas is supplied to reducing burner 33, air being supplied through louvres 34 in end member 11; a greater part of the gas passes through pipes 35 and ring 29 to cooling zone 24, and ring 28 to oxidizing burner 38.  The air for the burner is supplied by pump 39 to an annular sealing box 44. Gas from cooling zone 24 is also consumed at burner 38.  The kiln may contain inclined vanes to assist the movement of the ore.  The reduced ore passes to a cooling kiln 12, hammer mill 15 and conveyer 17 which carries it under a second conveyer belt 18 on which the magnetic material is held by magnets 19 until it reaches concentrate bin 21. Non-magnetic tailings pass to bin 20. Vertical tower furnaces, adapted, if desired, for fluidized operation, may also be employed. In one such tower, four beds are present, with an imperforate diaphragm above the lowest bed.  Air is passed through the lowest bed, byepasses the next higher bed, and then passes through the upper two beds.  Fuel gas is supplied above the solid diaphragm immediately under the second bed from the bottom, and also into the next higher bed.  The highest bed serves for preheating.  Another form has three beds, the upper two serving for preheating and roasting, and the lower for cooling in a reducing atmosphere.  The lower bed is of reduced cross-section.
Patent GB-897222-A (GB)
Title: Pipe sections made of plastics and a method of making them
IPC: F16L9/12
Filed: 1959-09-03
Abstract: 897,222. Non metallic pipes; pipe joints; junction pieces. FARBWERKE HOECHST A.G. Sept. 3, 1959 [Sept. 3, 1958], No. 30171/59. Classes 99(1) and 99(2). A pipe section, especially for effluent pipes, is built up of a plurality of layers of sintered plastic, the inner and outer surface layers being of different plastics each of which possesses at least one desirable chemical or physical property not possessed or possessed in an inferior degree by the other plastic and the intermediate layer consisting of a mixture of the said plastics that bonds the inner and outer layers together. As shown, a branched pipe section consists of an inner layer 1 of polyethylene, an outer layer 2 of polyvinyl chloride and an intermediate layer 3 of a mixture of these substances. The pipe section is formed with socket portions 5 one of which is provided on its inner surface with a layer 6 of adhesive plastic for joining to another pipe section. The outer layer 2 may consist of an adhesive plastic, the free end 8 of the pipe section being connected to another pipe section by means of a bonding sleeve 7. The separate layers may be formed of a plurality of laminations. The pipe section may be made by sintering powdered plastic on the outer surface of a heated core to form the inner layer or on the inner surface of a heated mould to form the outer surface, further layers being formed in succession on the layer first formed by repeatedly heating the core or mould, applying powdered plastic and sintering.
Patent GB-739275-A (GB)
Title: Improved process for the manufacture of unsaturated dinitriles
Inventor: BEECH WALTER FRANCIS
Filed: 1952-11-28
Abstract: Disubstituted maleic and fumaric dinitriles of the formula R1-C(CN) = C(CN)-R2 wherein R1 is an alkyl, alkenyl, cycloalkyl, or aralkyl radical, and R2 is an alkyl, alkenyl, cycloalkyl, aralkyl, or aryl radical, are obtained by heating a compound of the formula R2.CH.(CN).C.(CN) (R1)(OR3) wherein R1 and R2 are as defined above and R3 is an acyl group.  The radical R1 may, for example, be a methyl, ethyl, cyclohexyl, or benzyl radical and R2 may be a methyl, ethyl, cyclohexyl, benzyl, or phenyl radical.  The acyl group R3 may be saturated or unsaturated and may be of the aliphatic, cycloaliphatic, or aromatic series, e.g. acetyl, propionyl, palmityl, or benzoyl.  The starting material may be heated alone or in the presence of a diluent, e.g. an organic acid such as acetic acid. When the starting material is volatile it may be passed, if desired together with a volatile p  diluent, through a heated tube which may be packed with an inert solid, e.g. silica.  In examples (1) a solution of the acetate of a -methyl-acetoacetonitrile cyanhydrin in glacial acetic acid is introduced into a glass pyrolysis tube packed with silica chips and maintained at 470-480 DEG  C. by heating in an electric furnace; the product is fractionally distilled to yield dimethylfumaric dinitrile and dimethylmaleic dinitrile; (2) a solution of the acetate of a -ethylacetoacetonitrile cyanhydrin in glacial acetic acid is pyrolysed as in (1) to yield ethylmethylfumaric dinitrile and ethylmethylmaleic dinitrile; (3) benzylmethylfumaric dinitrile and benzylmethylmaleic dinitrile are obtained by pyrolysing the acetate of a -benzylacetoacetonitrile cyanhydrin as in (1); (4) the acetate of a -phenylacetoacetonitrile cyanhydrin is pyrolysed as in (1) to yield phenylmethylfumaric dinitrile and phenylmethylmaleic dinitrile.  The acetate of a -methyl-acetoacetonitrile cyanhydrin used in (1) may be obtained by the action of acetic anhydride in the presence of a trace of concentrated sulphuric acid on a -methylacetoacetonitrile cyanhydrin which may be made by the cautious addition of a -methylacetoacetonitrile to anhydrous hydrogen cyanide in the presence of a small quantity of potassium hydroxide.  The starting materials of the other examples may be obtained similarly from the correspondingly a -substituted acetoacetonitriles.
Patent GB-414253-A (GB)
Title: An improved process and apparatus for applying cap strips to bottles, jars and the like
IPC: B65C3/20
Filed: 1933-10-31
Abstract: 414,253. Labelling bottles and the like. JAGENBERG-WERKE AKT.-GES., 107, Himmelgeisterstrasse, D³sseldorf, Germany. Oct. 31, 1933, Nos. 30232 and 30233. Convention dates, Oct. 31, 1932 and Feb. 6, 1933. [Class 73.] Bottles or the like to the stoppers of which sealing cap strips are to be applied are, while being moved forward in one direction, given a supplementary movement in a different direction towards a moving cap strip held above the head of the bottle. As shown in elevation and plan respectively in Figs. 1 and 2, bottles F are fed on a conveyer band 11 in the direction of the arrow P and are transferred by a star wheel 10 on to one of a series of bottle carriers 5 mounted on rods 4 adapted to be raised and lowered in sockets 3 on a continuously rotating table 2 by means of a stationary cam 7. During rotation of the table 2, the carriers 5 are raised and the stoppers of the bottles F carried thereon are pressed upwards against a gummed cap strip held above the stopper between hinged pincers 16 carried at the extremities of arms of a star wheel 15 mounted co-axially with the table 2 with an arm above each of the carriers. The cap strip is taken by the pincers 16 from a stationary fork which receives it from a rotary sector 21 to which it is applied by a roller 20 which receives gum from a gumming device 19 and removes the strip from the base of a container 18. Freely rotating rolls 17 of elastic material press the sides of the cap strip, which has been stripped from the pincers 16 by the upward movement, about the neck of the bottle. In order to orient the ridge 29, Fig. 11, of a ridged stopper with the cap strip, a cam device 23 may be positioned adjacent the place of transfer of the bottle to the carriers 5 by the wheel 10, so as to contact with one side of the ridge and retain the stopper in the correct position. Alternatively, the bottles may, on passing to the carriers 5, engage a flexible band 25, Fig. 18, of rubber by which they are rotated. In its forward movement on the table 2 the bottle passes under a hinged arm 30 until the ridge 29 of the stopper engages a recess 27 on the underside of the arm and retains it in that aligned position. A second star wheel 10, Figs. 1, 2, removes the labelled bottles from the carriers 5 and carries them back to the conveyer belt 11.
Patent GB-647247-A (GB)
Title: Improvements relating to driving chains and chains for flight conveyors
IPC: B65G19/14
Filed: 1946-10-10
Abstract: 647,247. Driving-chains. HAPMAN, H. W. Oct. 10, 1946, No 30273. Convention date, June 13. [Class 24] [Also in Group XXX] A driving chain which may be used on a flight conveyer (see Group XXX) comprises pivot members 15 connecting links 12, 13 which fit the pivot pins 15 loosely to permit the chain to twist, washers 20 of rubber or synthetic rubber being mounted on the pins 15 in sealing engagement with the faces of the links. The washers 20 fit the pins 15 tightly and are held in compression by spring members 24 the bent-down end portions of which fit in holes in the pins 15 and which when unstrained have the configuration shown in dashed lines in Fig. 1; the members 12, 13, 14 and the washers 20 are thus clamped between the springs 24 and the heads 22 of the pins 15. The loose fit of the links 12, 13 permits the chain to bend or twist while the washers 20 exclude dirt from the bearing surfaces.
Patent GB-685202-A (GB)
Title: Improvements in or relating to a method of finishing felts
IPC: D04H1/08
Filed: 1948-11-22
Abstract: A liquid medium for treating felts comprising keratinous fibres comprises a thermosetting condensation product and an aliphatic mercapto monohydric or polyhydric alcohol, the treated felt being heated to cure the condensation product on the fibres.  The condensation products may be formed from an aldehyde such as formaldehyde, and amines or amides such as urea, thiourea, dicyandiamide, guanidine, amino-s-triazines such as melamine, and their alkylated derivatives; urea and/or thiourea modified melamine-aldehyde condensation products and their alkylated derivatives, halogenated and halogenated alkylated melaminealdehyde and phenol-aldehyde condensation products are also referred to. Mercapto alcohols specified are 2-mercapto-ethanol, 1-thiosorbitol and 1 - thioglycerol. Specification 685,201 is referred to.ALSO:Resin-impregnated felts comprising keratinous fibres are prepared by treating with a liquid medium comprising a thermosetting condensation product and an aliphatic mercapto monohydric or polyhydric alcohol, and heating the treated felt to cure the condensation product.  Felts of keratinous fibres such as sheep and lamb wool and mohair may be treated.  The condensation products may be formed from an aldehyde such as formaldehyde, and amines or amides such as urea, thiourea, dicyandiamide, guanidine, and amino-s-triazines such as melamine, and their alkylated derivatives; urea and/or thiourea modified melamine-aldehyde condensation products and their alkylated derivatives, halogenated and halogenated alkylated melamine-aldehyde and phenol-aldehyde condensation products are also referred to.  Mercapto alcohols specified are 2-mercaptoethanol, 1-thiosorbitol and 1-thioglycerol.  In an example, a strip of industrial felt is treated with an aqueous solution of a chlorinated methylated melamine-formaldehyde condensation product, 2-amino-2-methyl propanol phosphate, and 2-mercapto-ethanol.  The felt is centrifuged so as to retain 4.4 per cent resin solids based on the dry weight of the felt, and then dried and the condensation product cured by heating to 300 DEG  F. for 15 minutes. Specification 685,201 is referred to.
Patent GB-935763-A (GB)
Title: Improvements in or relating to the preparation of sheets of cellular material
IPC: B29C44/30
Filed: 1960-09-02
Abstract: 935,763. Laminates and laminating. SPECIALTY CONVERTERS Inc. Sept. 4, 1961 [Sept. 2, 1960], No. 30281/60. Addition to 897,219. Class 140. [Also in Group V] The method of preparing a cellular sheet disclosed in the parent Specification is modified by first roughly mixing the components of which the sheet is to be made, and carrying the rough mixture against a member, e.g. an inclined doctor blade, to cause further mixing to produce an intimate mixture. A mixture of tolylene diisocyanate and polypropylene glycol are roughly mixed with a catalyst in a cooled hopper 36 by a rotary screw (not shown). The hopper 36 is moved transversely to and fro above a moving impervious sheet 206 whilst the rough mixture flows down a rod 174 and a cooled inclined plate 178. The applied layer is carried beneath a cooled inclined doctor blade 214 to form a ridge 328 in which intimate mixing occurs. An impervious sheet 280 is fed over a cooled arcuate plate 228 to cover the layer passing through the adjustable gap between the doctor blade 214 and a transverse bar 270. The sandwiched mixture is expanded by passing it through an oven and the sheets 206, 280 are then stripped off. An alternative apparatus is described in which the rough mixture is prepared by spraying water on to a layer of the other ingredients on the supporting sheet. In this apparatus the cover sheet is applied after the layer has passed the doctor blade. Specification 864,917 also is referred to.
Patent GB-502787-A (GB)
Title: Improvements in or relating to photographic view finders
IPC: G02B23/14
Filed: 1938-10-20
Abstract: 502,787. Photographic view - finders. LEITZ GES., E. Oct. 20, 1938, No. 30360. Convention date, Dec. 30, 1937. [Classes 97 (i) and 98 (i)] A direct-vision view-finder has a convex eye lens L<1>, one or more concave object lenses L<2>, L<3> and an asymmetrical condensing lens L<4> on the. object side of the foremost object lens with its surface of greater curvature towards the observer. The system may be used in a finder of the kind having an image boundary frame as described in Specification 454,063. Data are given.