baber/WOPTO huggingface dataset:
Patent GB-812137-A (GB)
Title: Improvements relating to apparatus for vacuum braking systems for railway vehicles
IPC: B60T8/18
Filed: 1955-06-09
Abstract: 812,137. Vacuum braking systems. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd.. and MOORE, 1. G. May 17, 1956 [June 9, 1955], No. 16590/55. Class 103 (1). In a vacuum braking system for railway vehicles of the kind in which each vehicle to be braked is provided with two brake cylinders 1, 2, both operable to apply braking force to the same brake rigging, one cylinder 2 being operated whether the vehicle is empty or loaded and the other cylinder 1 being operated only when the vehicle is loaded. The cylinder 1 is connected to the common cross-shaft 6 through a rotary free-wheel device. As shown in Fig. 2, such free-wheel device comprises on the shaft 9 connected to the load brake cylinder 1 inverted ratchet teeth 18 bearing against rollers 12 movable between the dogs 14 on a collar 19 prevented from rotation by having an arm 7 fixed to a suitable part of the vehicle. Thus cylinder 2 may act on the brakes through shaft 6, taking up slack in the rigging, the cylinder subsequently becoming operative to apply additional braking load through the wedging action of rollers 12 between member 17 and shaft 6. Specification 792,372 is referred to.
Patent GB-380770-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K27/10
Filed: 1932-06-13
Abstract: 380,770. Alternating -current commutator motors. SCOTT, W., 13, Edwardes Square, Kensington, London. June 13, 1932, No. 16660. [Class 35.] Commutator short-circuiting and brush lifting mechanism for an induction motor started as a repulsion motor comprises a series of shortcircuiting elements each of which moves about one axis to short-circuit the commutator and thereafter moves about a second axis to raise the brushes. The short-circuiting elements 21, Figs. 1, 5 surround a sleeve 17 slidable but not rotable on the shaft 1 and are held by a steel or other conducting ring 20 engaging hook-like extensions 22. The elements are maintained in the position shown in Fig. 1 by an endless spring 24 accommodated in slots 23. The sleeve 17 carries a cylindrical shield 25 surrounding the members 21, and a second sleeve 27 mounted between flanges or washers 29, 30. The elements 21 are driven by means of a washer 34 having projections 35 extending between some of the elements. The brushholders 7 are pivoted to lugs 6 on the brush rocker 5 which has radial holes to receive brush lifting push-rods 15. In operation, the elements 21 first turn about the pivoting ring 20 so that their ends 36 bear against extensions 4 of the commutator segments, which are thereby shortcircuited. The slots 23 are of such length and shape that the spring moves down the base thereof and effects a rapid overbalancing action. As the speed increases, the elements 21 continue to move outwards but the ends 36 constitute the pivots. The ends 22 accordingly move to the right whereby the sleeve 17 is moved against the action of a spring 33. At the same time, the sleeve 27 is moved axially' without rotating and the surface has such a shape that through the balls 16, the rods 15 are forced outwards, thus raising the brusharms 7. During slowing down of the motor, the spring 24 again produces a quick overbalancing to replace the commutator brushes and to remove the commutator short-circuit. In a modification, the brush boxes are fixed and the push-rods 15 operate on members engaging under pins projecting from both sides of the brushes to lift the brushes from the commutator.
Patent GB-484257-A (GB)
Title: Improvements relating to swash-plate mechanism
IPC: F16H23/06
Filed: 1937-06-16
Abstract: 484,257. Swash - plate mechanism. HULSEBOS, W., and NAAMLOOZE VENNOOTSCHAP HULSEMO. June 16, 1937, No. 16775. [Class 80 (iii)] In swash-plate mechanism comprising an inclined disc engaging sliders connected to the pistons or plungers, the pistons or plungers are provided with pressure members having convex surfaces of revolution the geometrical axes of which are parallel to and preferably coincident with the axes of the respective cylinders, and the sliders have flat or approximately flat external surfaces which are parallel to the surfaces of the swash-plate and make rolling contact with the convex surfaces of revolution. The swash-plate 10 has parallel faces engaging sliders 12, 14 the outer faces 16, 18 of which roll over surfaces 26, 28 of pressure members in the piston extension 20, these surfaces being conical or convex. The faces 16, 18 of the sliders may be flat, conical or curved. The pressure members are bored to receive spring-loaded plungers 30, 32 the rounded ends of which engage sockets 42, 44 in the sliders. The sliders are prevented from rotating by extensions 54 thereon engaging ribs 56 in the extension 20. In modifications, (1) the plungers have sockets to receive rounded portions on the sliders, (2) the sliders have rims 50, Fig. 5, engaging conical edges 52 of the pressure members, (3) the plungers are replaced by annular ribs on the sliders engaging annular recesses in the pressure members. Specification 484,366 is referred to.
Patent GB-240929-A (GB)
Title: Improvements in or relating to the concentration of ores
IPC: B03D1/06
Filed: 1924-07-12
Abstract: 240,929. Lavers, H., and Minerals Separation, Ltd. July 12, 1924. Flotation processes.-Ores containing mixed sulphides are treated for the differential separation of the sulphides by grinding the ore, prior to froth flotation, in a thick aqueous pulp containing a cyanide of an alkali or alkaline earth metal, preferably in absence of the oily frothing agents. After the grinding and prior to the flotation the pulp may be diluted, and then or during the flotation a modifying agent such as an alkaline silicate may be added. Lead, for example, may be thus obtained from an ore containing lead and zinc sulphides. The residues from the flotation mav be diluted with fresh water and again subjected to flotation, with or without the addition of an alkaline bichromate or a sulphate such as copper sulphate, for the recovery, for example, of zinc. Specification 18937/13 is referred to. The Provisional Specification refers also to Specification 11471/13, and states also that the ores may be ground with other soluble salts than cyanides, such as copper sulphate and potassium bichromate.
Patent GB-775306-A (GB)
Title: Improvements relating to articles of confectionery
IPC: A23G3/00
Filed: 1954-06-08
Abstract: Confectionery is made by extruding a mixture of sugars, water, flavouring and a quick-setting binder, e.g. gelatine, pectin or agar through a plate with a number of small square or round holes on to a conveyer belt.  The extruded strands are cut into lengths and then coloured.ALSO:Rod-like round or square section articles, resembling matches and prepared, by extrusion, from sugar or sugary material with a quick-setting binder, are put up in a receptacle resembling a match box.  The confectionery may be made from a mixture of sugars, water, flavouring and a binder, e.g. gelatine, pectin, agar or the like, by extrusion through a plate with a number of small holes in it on to a conveyer.
Patent GB-715241-A (GB)
IPC: C09B5/14
Filed: 1952-07-07
Abstract: 715,241. Dyes. SANDOZ, Ltd. July 7, 1952 [July 12, 1951; Dec. 14, 1951; Dec. 20, 1951], No. 17038/52. Class 2(4) The invention comprises compounds of the anthrapyridine series of the formula: wherein, if X is chlorine, bromine, NO2, or OCH3, Y is hydrogen, chlorine, bromine, alkyl, or sulpho, and n is 1 but if X is arylamino, Y may also be alkoxy or aryloxy and n is 1, 2, or 3. They are made by condensing anthraquinones of the formula: under acid conditions with an ester of acetoacetic acid with an alcohol of 1-5 carbon atoms. When X is arylamino the products may be treated with sulphonating agents, or if Y is halogen, it may be replaced by sulpho by reaction with aqueous sodium or potassium sulphite. The products which contain sulpho groups are yellow to red acid dyes for wool, silk, and nylon. To create the acid conditions, sulphuric, phosphoric, alkaline or aryl sulphonic acid may be added, or hydrogen chloride or bromide may be passed through the reaction mixture. In examples, acetoacetic acid ethyl ester is heated with the following, in presence of acid as indicated above in those cases where a free sulpho group is not present in the reactant listed below, and in presence of excess ester as solvent or another solvent such as chlorbenzene or nitrobenzene;-(1) 1-amino-4-bromoanthraquinone, (2) 1-amino-4.2'-naphthylaminoanthraquinone inylamino-anthraquinone, (4) 1- amino-2.4-dibromo- (3) 1-amino-4-(4'-methyl)-phe anthraquinone, (5) 1-amino-2.4-dichloroanthraquinone, (6) 1-amino-2-bromo-4-(4'-methyl)-phenylaminoanthraquinone, (7) 1-amino-2-methyl-4- chloro or bromo-anthraquinone, (8) a 1-amino-2-methylanthraquinone having in 4-position one of the following groups; chloro-, bromo-, phenylamino-, 2'-3'- or 4'-methylphenylamino, 3'.4'-dimethylphenylamino, 2'6'-dimethylphenylamino-2.4'.6'- trimethylphenylamino-, 2',.3'-, or 4'- chlorophenylamino, 2'- or 4'- methoxyphenylamino, 2'- methoxy-5'-methyphenyl-amino 1'- or 2'- naphthylamino or ar-tetrahydronaphthylamino, 4'- pheny-phenylamino, 4'-(4" chlorophenoxy)-phenylamino 4'-phenoxyphenyl-amino, (4'benzyl-2'-methyl) phenylamino, nitro, or methoxy, the last two variants being combined with the methyl ester of acetoacetic acid; (9) 1-amino-2-sulpho-anthraquinones having substantially the same substituents and also 2'-, 3', or 4'- carboxy-phenylaminoin 4-position; (10) 1-amino-2-phenoxy-4-(4'-methyl) -phenylaminoanthraquinone . or 1-amino-2-(4'-tert-amyl)- phenoxy-4-phenyl-amino-anth,raquinone. Those products having arylamino groups in 4-position are sulphonated, or where halogen is also present in 2-position, the product is reacted with potassium sulphite solution. Specification 412,270 is referred to.
Patent GB-627911-A (GB)
Title: Improvements in removable covers for discharge openings of sinks, drains and like liquid receivers
IPC: E03C1/29
Filed: 1947-06-27
Abstract: 627,911. Waste-fittings for sinks; traps. BADEN, E. June 27. 1947, No. 17073. [Classes 26 and 33] A removable cover for an opening of a sink, drain or like liquid receiver through which liquids with or without solids are passed into a container or duct has a hole which may be closed by a removable plug 21, and incorporated beneath the hole therein a water seal formed by means of a downward extension 3 of the wall projecting into a bowl-like receptacle 4, adapted to contain liquid, which has a central upstanding stem 5 secured to the centre of a perforated member secured to the wall 3 of the hole 2. The stem may be detachably secured by screwing to the centre of a spider 6, which may be detachably secured to the wall 3. The cover 1 is provided with a depending flange 7 into the groove in which is secured a rubber ring 9, which fits with a sealing action into the opening of a frame 10 secured by bolts 13 to the rim 14 of an opening formed in the top of a container 15. The flange 17 of the frame 10 is fitted within an opening 18 in the sink, which is supported on the container 15 by a spacing collar 19 seating on a rubber ring 20. Specification 627,909 is referred to.
Patent GB-494362-A (GB)
Title: Improvements relating to dispensing scales
IPC: G01G1/30
Filed: 1937-06-19
Abstract: 494,362. Weighing - apparatus. DE GRAVE, SHORT, & CO., Ltd., and COUNTER, C. F. June 19, 1937, No. 17122. [Class 143] A dispensing-scale comprises a base 3, an even armed weighbeam 7, scale pans 13 suspended from the scale beam, a loading chain 23 adjustably anchored by one end to one arm of the scale beam, a rotatable drum 24 to which the other end of the chain is anchored, an indicating means (a graduated dial on the spindle of the drum 24) whereby the drum may be rotated to wind or unwind the chain and thereby apply a determined loading to the scale beam, and a centrally disposed arm 14 depending from the scale beam and carrying at its lower end a vane for example aluminium, movable in a magnetic field (produced by a horse-shoe magnet 16) to damp the oscillations of the scale beam. The adjustable connection between the chain and the scale beam comprises a screw 20, traversable nut 21 and a pivoted shackle 22 to which the chain is attached. The initial balancing of the scale beam may be effected by a key applied to a pin accessible after removing a cover plate from the housing. Rotation of the pin adjusts a rack 33 transversely of the depending arm 14 to effect the balancing. The bearings of the scale beam are screened from magnetic influence by means of iron plates. Relieving stops 36 are movable beneath the pans.
Patent GB-595519-A (GB)
Title: Improvements in or relating to the stretching of cellulose derivative yarns and likematerials
IPC: D02J1/22
Filed: 1945-07-05
Abstract: Artificial yarns and similar materials having a basis of a cellulose derivative containing up to about 1.8 substituent radicles per glucose unit are stretched, e.g. from 5 to 10 times their original length, in wet steam or hot water under atmospheric pressure.  The process is applicable to cellulose ester and ether materials, particularly esters of fatty acids containing up to six carbon atoms in the molecule.  Materials of cellulose acetate having an acetyl value of 40-45 per cent corresponding with about 1.5-1.8 acetyl radicles per glucose unit may be treated.  In the case of propionic butyric &c. esters (i.e. those more hydrophobe than cellulose acetate), the degree of substitution should be correspondingly lower than in the case of cellulose acetate. Should the radicle be more hydrophilic, e.g. an hydroxy-alkyl radicle, a higher degree of substitution is permissible, or alternatively, the temperature of the steam or water may be lower. Also esters of low viscosity require a lower steam or water temperature or alternatively may have a somewhat higher content of acetyl radicles to obtain similar results, whereas with those of higher viscosities the temperature should be higher or the acetyl content lower.  The yarns may be subjected to a wetting-out treatment before entering the stretching chamber.  The tenacity of the stretched yarns may be further increased by saponification with inorganic or organic saponifying agents, and the saponification may be carried to completion.  In an example, cellulose acetate having an acetyl value of 41 per cent (as acetic acid) is dry-spun from a 23 per cent solution in an 80-20 mixture by volume of acetone and water.  Stretching is effected by passing it through a chamber containing wet steam at a temperature of 98-100 DEG C. at such a rate that it is exposed to the steam for about 0.2 seconds.  The yarn is drawn from the stretching chamber at such a rate that it is stretched to 10 times its original length.  The tenacity can be further increased by saponification in a bath containing 0.6 per cent sodium hydroxide and 10 per cent sodium acetate.  Specifications 402,104, 402,105, 402,143, 438,584, 438,585, 438,586, 438,587, 438,655, 438,656, 443,707, 443,773, 455,925 and 568,047 are referred to.
Patent GB-977987-A (GB)
Title: Improvements in or relating to light actuated transistor switching circuit arrangements
Inventor: FENTON ROGER WAKEFIELD
IPC: H01P1/15
Filed: 1962-05-04
Abstract: 977,987. Transistor switching circuits. MARCONI CO. Ltd. Jan. 23, 1963 [May 4, 1962], No. 17213/62. Heading H3T. A light actuated switching circuit comprises a photo-transistor VT1 cross-coupled with transistor VT2 to form a two-state circuit such that transistor VT4 conducts and transistor VT1 is non-conducting in the absence of light from source L falling on the photo-transistor VT1, but when light above a predetermined value falls on the photo-transistor the latter is caused to conduct and transistor VT2 is rendered non-conducting, so that Zener diode Z breaks down and allows the output from P to be passed to an output circuit comprising transistors VT3, VT4. When the light from L is cut off photo-transistor VT1 returns to its non-conducting condition and transistor VT2 conducts, the switching circuit being again isolated from the output circuit by the Zener diode 2. Diode D acts to protect transistor VT4 if the load is inductive.
Patent GB-1093104-A (GB)
Title: Photographic camera
IPC: G03B7/083
Filed: 1965-04-23
Abstract: 1,093,104. Photographic cameras. AGFA A. G. April 23, 1965 [April 24, 1964], No. 17252/65. Heading G2A. A pivoted blade camera shutter, similar to that described in Specification 1,051,787 in which a first blade ring 1 is continuously retarded and operation of a second blade ring 2 can be variably delayed by an electrical circuit including a photoresistor 28 and electromagnet 29, is characterized in that operation of the release lever 35 is blocked by a lever 41 if a current source 25 is insufficient to operate an electromagnet 31 to move the lever 41 against the action of its spring 43. This ensures that sufficient voltage is available to operate the exposure control device. Initial movement of the release lever 35 closes contacts 32 to energize the electrical circuit. In an embodiment relating to an everset shutter the lever delaying operation of the second blade ring also acts as the blocking lever. In another embodiment in which the shutter comprises only one blade ring 93, Fig. 3 (not shown) linked to a spring-biased member 97, a projection 104 of which engages a gear retard 101 positioned by a lever 128 in dependence upon a galvanometer 90 to vary the exposure, movement of the release lever 108 to release the member 97 is blocked by a lever 116 if the current source 111 is insufficient to operate the electromagnet 114.
Patent GB-330400-A (GB)
Title: Improvements relating to bedsteads for hospital and like use
IPC: A47C20/04
Filed: 1929-06-05
Abstract: 330,400. White, C. V., and Whitfields Bedsteads, Ltd. June 5, 1929. Bed-rests.-A bedstead of the kind in which a part of the head-end is adapted to be moved into an inclined position to serve as a back-rest for the occupant, comprises vertical pillars a, two vertical tubular guides f rigidly attached thereto, two members h adapted to slide in said guides and having their upper ends bent into the horizontal, a tube j or equivalent member rotatably carried on said ends, members k constituting the filling of the head-end attached to the member j and stops n rigidly attached to the filling members and adapted to encounter the pillar a to limit their rearward movement. Fig. 2 shows the device in use as a bed-rest.
Patent GB-833168-A (GB)
Title: Improvements in manufacture of products from plastisols
IPC: B29C48/08
Filed: 1958-05-30
Abstract: 833,168. Moulding synthetic resin plastisols. UNITED STATES RUBBER CO. May 30, 1958 [Aug. 15, 1957], No. 17327/58. Class 87(2). [Also in Group VIII] Articles are moulded from a plastisol, e.g. of polyvinyl chloride and dioctyl phthalate, which has been heated and at the same time agitated to prevent gelation at the normal gelation temperature. In the extrusion of a rod or strip of polyvinyl chloride a turbulent flow of plastisol is maintained through a steam jacketed pipe 5, Fig. 5, by a pump 3 which feeds the plastisol from a reservoir 2. The turbulence prevents gelation of the heated plastisol before it passes through a long tubular extrusion die 6 which is electrically heated so that a rod or strip 13 of fused resin is extruded. The latter is cooled in a water bath 19 and wound on a drum 20. Instead of being extruded through the die 6 the heated and agitated plastisol may be injected into a mould, e.g. for forming a shoe sole, where it gels, and is then fused either before or after removal from the mould. Alternatively the treated plastisol may be fed into open mould cavities on a rotating drum to form gelled preforms which are stripped from the drum before completing one revolution therewith, and fused in an oven. The drum may alternatively, be provided with heating and cooling means so that the articles may be fused when in the mould cavities. In a further application a strip or rod is moulded e.g. feeding the heated and agitated plastisol to a heated or cooled rotating drum. The heated and agitated plastisol may also be used for coating the outer surface of a woven hose by extruding it through a die 34, Fig. 8, through which the hose is fed coaxially by-rolls 33. The latter are driven from shaft 39 which also rotates a hollow pin 36 for distributing the plastisol within the die. Devices for coating the interior surface of a woven hose and of a sheet of fabric or paper are also described (see Group VIII).
Patent GB-959697-A (GB)
Title: Improvements in selective positioning systems
IPC: B61L3/22
Filed: 1961-05-12
Abstract: 959,697. Control of motors. GENERAL ELECTRIC CO. May l2, 1961 [May 31, 1960], No. 17339/61. Heading H2J. [Also in Division B7] In an arrangement for positioning a movable object with respect to a fixed object, e.g. a rail vehicle with respect to a predetermined position on a track, a position indicating device comprising a pick-up loop 12 on the vehicle inductively coupled to a current carrying line 10 adjacent the track supplies an output signal for control of the vehicle drive equipment. Current is supplied to line 10 via a selected one of a number of taps each positioned at a station at which the vehicle may be brought to a halt. The current divides and flows in opposite directions to each side of the tap and induces a signal in the pick-up loop 12 which differs in phase by 180 degrees depending on the loop being to one side or the other of the tap and which is zero when the loop is opposite the tap. The output voltage of the loop is fed to a phase discriminator circuit which provides a D.C. error signal of polarity determined by the phase of the loop voltage which controls the direction of drive of the vehicle towards the tap position. The voltage drops to zero and the drive is discontinued when the loop is opposite the tap position. Figs. 4 and 5 (not shown) indicate an interpolation arrangement by which the vehicle may be positioned intermediate the station positions.
Patent GB-1349641-A (GB)
Title: Apparatus for transporting loads
IPC: B65G47/90
Filed: 1971-05-25
Abstract: 1349641 Luffing arm apparatus ROBERT BOSCH GmbH 27 May 1971 [24 June 1970] 17372/71 Heading B8H [Also in Division F2] Apparatus for transporting loads, e.g. a pallet 33 from a position A to a position B comprises a fork lift device 19 pivotally mounted on the levers 17b of a parallel displaceable linkage comprising two sets of parallel levers 17a, 17b, 18a, 18b (only one of which is shown), which is mounted on the carrier 13 of a travelling gear 12, the displacement of the linkage to provide movement of the device 19 from position A to B being effected by means of a rotatable main shaft 16 which when driven through 180 degrees causes movement of the arms 18a therewith, the arms 18b simultaneously moving about an auxiliary shaft 34, the lever 17a not moving, which causes the linkage to assume the position shown in phantom lines on the right-hand side of Fig. 2. Prior to movement of the pallet 33 the linkage and fork lift device 19 is displaced relative to the shaft 16 on extension of the rod 22 of an hydraulic cylinder 23, said rod 22 being connected to jointed levers 20 which are connected to one of the levers 17a of the linkage, the extension of the rod 22 causing the linkage and fork lift device 19 to be displaced to the position indicated at C in Fig. 2, in order to permit the tines of the device 19, which initially are above the pallet 33, to be swung to a position in which they are beneath the pallet on retraction of the piston-rod 22. Rotation of the shaft 16 is effected by means of a sprocket wheel 28 connected thereto and driven by way of a further sprocket wheel 30 which is driven by means of an hydraulic piston-cylinder 31, 32. The travelling gear 12 is provided with rollers 11 for movement along rails 10 suspended from the ceiling of a storage room.