baber/WOPTO huggingface dataset:
Patent GB-720842-A (GB)
Title: Improvements relating to the preparation of cadmium selenide
IPC: C01B19/00
Filed: 1953-03-24
Abstract: Cadmium selenide is prepared by reacting an aqueous solution of a cadmium salt with hydrogen selenide whilst maintaining a pH of 3-7, preferably 6.  The cadmium selenide may be removed by decanting or otherwise.  In the example, hydrogen selenide is prepared by dropping water onto aluminium selenide obtained by igniting aluminium powder and selenium, and passed into a solution of cadmium nitrate obtained by diluting a solution of cadmium in nitric acid, the concentrated solution having been previously heated until nitric acid was exhausted.  The nitric acid liberated by the hydrogen selenide was neutralized by constantly adding sodium hydroxide solution to maintain the pH as near as possible to 6.  Cadmium selenide was recovered by centrifuging, washing, drying and baking the precipitate under vacuum for an hour.  Cadmium acetate, chlorate, chloride or sulphate may be used in place of the nitrate and sodium hydroxide may be replaced by other basic agents.  If the pH exceeds 7, cadmium hydroxide is produced.
Patent GB-1461217-A (GB)
Title: Circuit breaker
IPC: H01H71/52
Filed: 1975-02-26
Abstract: 1461217 Automatic circuit breakers MERLIN GERIN 26 Feb 1975 [1 March 1974 9 Dec 1974] 8127/75 Heading H1N In a circuit breaker of the type comprising in a moulded insulating casing co-operating fixed 10 and movable 12 contacts, an operating mechanism including a toggle 22, 24 for moving said movable contact, and a manually operable handle 18 movable between OFF and ON positions, wherein a blocking member 62 is positioned in the path of movement of the handle to prevent it moving to the OFF position when the contacts are closed, the blocking member is arranged to allow limited handle movement from the ON position towards the OFF position insufficient to collapse the toggle 22, 24 but sufficient to allow the mechanism to be tripped to open the contacts, the blocking member being moved out of the path of movement of the handle when the contacts open. This arrangement prevents movement of the handle to the OFF position if the contacts are welded together. The trip device operated by the handle comprises an arm 76 biased to engage a crank 82 which retains it when the handle is in the ON position but which is displaced to release it when the handle moves. Tripping of the circuit breaker under overload conditions is performed by a further tripping mechanism wherein rotation of a trip bar 56 releases a latch 48 and thus a cradle 28 which is rotated by a spring 32 to collapse toggle 22, 24 and open the contacts 10, 12. In further embodiments the blocking member takes the form of an arm engaging a trip lever connecting the handle and a trip device, Fig. 12, not shown, or a pin engaging a finger secured to handle 18, Fig. 13, not shown, or an extension of the toggle linkage, Fig. 14, not shown.
Patent GB-211732-A (GB)
Title: Improvements in and relating to twisting and doubling frames
IPC: B65H57/14
Filed: 1923-03-22
Abstract: 211,732. Briggs, E., and Holt, P. M. March 22, 1923. Thread guides.-In a twisting or doubling frame the yarn passes from one or more guide rollers A, which may have different diameters, to a cylinder C, and thence under a guide roller B to a guide roller D, which replaces the usual pot eye. The grooved rollers A, B, D may be supported on ball bearings and may be made of metal, wood, porcelain, or fibre. A guard arranged adjacent the roller B prevents the yarn from falling out of position when the machina is not running. Specifications 12402/84, 2063/92, and 28496/07 are referred to.
Patent GB-453839-A (GB)
Title: Improvements in electric irons
IPC: D06F79/02
Filed: 1935-03-15
Abstract: 453,839. Electric irons. DOWSING CO. (ELECTRICAL MANUFACTURERS), Ltd., and CRIPPS, F. W. J., Kangley Bridge Road, Lower Sydenham, London. March 15, 1935, No. 8132. [Class 39 (iii)] A cordless iron is providec with contacts 40 positioned sc that the iron is presented nose foremost on a heating shelf pro vided with current supplying contacts at its rear end. The contacts on the iron project above the upper surface and are remov able without removing the top of the iron. Projections 41 behind the contacts close the openings in shrouds surrounding the contacts on the shelf when the iron is positioned thereon. The heating shelf is described in Specification 453,916.
Patent GB-435119-A (GB)
Title: Improvements relating to dynamo regulators
IPC: H02P9/24
Filed: 1934-03-15
Abstract: 435,119. Automatic regulation. C.A.V.- BOSCH, Ltd., and PLETTS, J. W., Warple Way, Acton, London. March 15, 1934, No. 8166. [Class 38 (iv)] Relates to a dynamo regulator of the type in which the dynamo is provided with two fields f<1>, f<2>, each of which is controlled by a separate regulator having a main winding x<1> and a bucking winding b<1>, the bucking winding b<1> and series connected resistance r<1> being periodically short-circuited by the contacts c<1>. To prevent a rising voltage with speed due to the effect of the bucking windings additional windings s<1>, s<2> in series with the field windings are mounted on the regulators so as to oppose the effect of the bucking windings. Preferably, the windings s<1>, s<2> are cross-connected so as to ensure equal distribution of the regulator duties.
Patent GB-782067-A (GB)
Title: Novel pyridinium salts and a process for the manufacture of same
IPC: C07D213/53
Filed: 1956-03-16
Abstract: The invention comprises compounds of the formula <FORM:0782067/IV (a)/1> wherein R is a hydrogen atom or an acyclic hydrocarbon group of up to four carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl or allyl, Q is a hydrocarbon radical of not more than eight carbon atoms such as a methyl, ethyl, allyl, benzyl or phenylethyl group and X is an anion, preferably a pharmaceutically acceptable anion such as a chloride, bromide, iodide, methyl sulphate or ethyl sulphate anion.  The compounds are made by treating the corresponding a -hydroxymethyl-a -phenylacetyl-N-picolylamide with a quaternating agent QX, suitably by heating the reactants in an inert solvent or diluent.  Examples describe the preparation of 1-methyl-3-(N-methyl-a -phenyl-a  - hydroxymethyl - acetamido) - pyridinium iodide; 1 - methyl - 4 - (N - ethyl - a  - phenyl - a  - hydroxymethyl - acetamido) - pyridinium methyl sulphate; 1 - allyl - 3 - (N - allyl - a  - phenyl - a  - hydroxymethyl - acetamido) - pyridinium bromide; 1 - methyl - 4 - (N - ethyl - a  - phenyl - a  - hydroxymethyl - acetamido) - pyridinium iodide; 1 - methyl - 2 - (N - methyl - a  - phenyl - a  - hydroxymethyl - acetamido) - pyridinium iodide; 1 - benzyl - 2 - (a  - phenyl - a  - hydroxymethyl - acetamido) - pyridinium chloride and 1 - methyl - 4 - (N - ethyl - a  - phenyl - a - hydroxymethyl - acetamido) - pyridinium bromide.  Many other compounds obtainable according to the invention are specified. Intermediates.  The a  - hydroxymethyl - a  - phenylacetyl - N - picolyl - amides used as starting materials such as tropic acid N-methyl-N-(a -picolyl)-amide and tropic acid-N(a -picolyl-amide are made by treating O-acetyl-tropic acid chloride with a pyridylmethylamine, the amino radical of which may contain a lower acyclic hydrocarbon radical "R" as a substituent and hydrolysing off the acetyl group from the resulting O-acetyl amide.  Methyl a -picolyl amine is made by treating a -hydroxymethyl-pyridine with phosphorus pentachloride and reacting the resulting a -chloromethyl-pyridine with methylamine. a -Aminomethyl-pyridine is made by catalytic reduction of a -cyanopyridine.
Patent GB-287462-A (GB)
Title: Improvements in or relating to apparatus for use in radio and other high frequency installations
IPC: H03F1/16
Filed: 1928-03-19
Abstract: 287,462. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Usselman, G. L.). March 19, 1927, [Convention date]. Transmitting apparatus. - Valve amplifying- units, particularly suitable for short-wave transmitters, comprise tuning-condensers having a plurality of series-connected capacities, each consisting of fixed and movable elements, and means are provided for simultaneously varying all the capacities. Fig. 1 diagrammatically shows an amplifier unit, the circuit of which is shown in Fig. 2. The moving plates 4, which are guided by rollers 6 on an insulating rail 8, are linked to nuts 18 on oppositely-threaded parts of the operating spindle 12, the links 22 being hinged at 24 to the plates 4 and nuts. Rotation of the spindle 12 thus causes the plates 4 to move simultaneously and equally in opposite directions to vary the distance between themselves and their fixed plates 2. The latter support the fixed elements of neutralizing condensers 36, the split clamping members 44, the valves 34, and the output inductor 30, which arrangement reduces the lengths of the connecting leads to negligible proportions. Fig. 3 shows the rear view of the panel, 50 being the hose for the water-cooled anodes, and 31 the connectors of the inductor 30 to the plates 2.
Patent GB-590241-A (GB)
Title: Improvements in containers of the sprinkler type for dispensing condiments and otherpowdery or granulated substances
IPC: B65D83/06
Filed: 1945-04-04
Abstract: 590,241. Condiment receptacles. HODGE, W. G. April 4, 1945, No. 8315. [Class 18] A container for salt and pepper comprises an inner receptacle 13 slidably supported within a housing 1 and both parts having perforations 29, 30, 31, 32, which are brought into alignment to permit the contents to escape. The inner receptacle 13, divided into two compartments 15, 16 by a partition 14, is supported within the housing by a plate 2. The housing is cut away at an end to enable the inner receptacle to be moved against a spring 26 secured at the other end between the end walls of the inner receptacle and housing. Perforations 31, 32, are provided in a cover plate, supported on a ledge at the top of the inner receptacle, above each compartment. Similar perforations 29, 30, are provided in the top of the housing but are displaced so that only the perforations for one compartment are in line with those in the top of the housing at any one time. Movement of the inner receptacle within the housing permits the perforations of the second compartment to register with those in the top of the housing and at the same time the perforations for the first compartment are sealed. Corks 20 fit in bosses 18 provided in the base of the inner receptable and are accessible through a slot 21 in the supporting plate 2 for the purpose of refilling the containers. Alternatively the inner receptacle may comprise two separate containers placed together within the housing and the perforations may be arranged so that the contents of a number of the compartments may be used together. Any number of compartments may be provided and selection of a particular compartment may be assisted by a spring ball catch.
Patent GB-514888-A (GB)
Title: Effervescent composition containing magnesium hydroxide and method of making same
IPC: A61K9/46
Filed: 1938-03-18
Abstract: 514,888. Effervescent magnesium hydroxide preparations. PAULEY, A. W. March 18, 1938, No. 8359. Convention date, March 20, 1937. [Class 81 (i)] A method of preparing magnesium hydroxidein a form which secures rapid dispersion and a uniform suspension of the greater part of any desired quantity of magnesium hydroxide in water, consists in compounding the magnesium hydroxide in a dry condition with an effervescent preparation composed of bicarbonate of soda with citric and/or tartaric acid, sufficient in amount to produce a brisk effervescence when added to water. The composition may be prepared as a powder or in tablet or other, e.g., granular, solid form. Oil of peppermint may be added as a flavouring, and gum acacia or gum tragacanth may be used as a binder when the composition is made up as an effervescent tablet. When the composition is added to water, the magnesium hydroxide remains substantially unchanged chemically, only a small portion going into solution and the major part remaining suspended. In an example, a granular product is prepared by mixing together magnesium hydroxide, tartaric acid and sodium bicarbonate, each of which has been dried, thereafter uniformly admixing uneffloresced crystals of citric acid, heating the mixture in thin layers at a temperature from 95‹C.-105‹C, until it becomes moist and acquires the consistency of dough, extruding this product through a sieve, and drying.
Patent GB-434925-A (GB)
Title: Improvements in or relating to aluminium base alloys
IPC: C22C21/06
Filed: 1935-03-18
Abstract: Aluminium alloys contain about 0,1-3,5 per cent of magnesium, 0,05-0,45 per cent of copper, 0,1-1 per cent of manganese, and 0,1-0,5 per cent of chromium.
Patent GB-154117-A (GB)
Title: Improvements in pivoted latches
IPC: E05C3/12
Filed: 1920-03-22
Abstract: 154,117. Parkes, S. R. March 22, 1920. Latches, lift and thumb.-The handle is stamped out of sheet metal and has a curved part 1 for the hand, and two flat parts 2 and 3 for attachment to the door. The upper part 3 is slotted at 8 and has two lugs 5 bent up towards each other, and in the construction shown in Figs. 1 and 3, integral with the handle, between which the latch-actuating member 7 is pivoted by the pin 6. In the construction shown in Fig. 2, the latch-actuating member 7 is pivoted to the handle by means of two parallel-faced lugs 10, which have legs 9 passing through holes in the member 3. The legs are riveted at the back of the member 3 causing the shoulders 11 to grip the face of the metal firmly. In the construction shown in Fig. 4, the member 7 is pivoted to the handle by a member 15 having four converging sides ending in a slot 16 through which the member 7 passes. The part 15 may be integral with, or fastened to, the handle.
Patent GB-907930-A (GB)
Title: Improvements in or relating to latching devices
Inventor: MOSS NORMAN SIDNEY
IPC: E05B85/24
Filed: 1960-03-10
Abstract: 907,930. Latches. WILMOT-BREEDEN Ltd. March 2, 1961 [March 10, 1960], No. 8444/60. Class 44. A latch which closes automatically comprises a keeper 13, a bolt 10 and a bifurcated bolt 11 both of which are pivoted to a base-plate and are biased to the fully open position by a spring 24. By providing a locking lever 14 and a control lever 15 two distinct operations are necessary in order to open the latch, the first movement only partially opening the latch. The bolts 10, 11 are connected by a link 21 pivoted to each and the locking and control levers 14, 15 are pivoted on opposite sides of the bolt 11, and are connected by a spring 16, a Bowden cable 17 serving to move the two levers relative to one another. In the closed position the locking lever engages an abutment 20 on the bolt 10 and the side of the control lever 15 engages the side of the link 21. When the cable 17 is pulled the locking lever is moved anticlockwise to release the bolt 10 which moves until an abutment 22 on the link 21 engages an abutment 23 on the control lever 15. Release of the cable 17 makes the control lever move anticlockwise to disengage the abutments 22, 23, the bolt 10 then moving to the partially open position in which the abutment 20 co-operates with an abutment 25 on the locking lever. Further operation of the cable or manual operation of the locking lever releases the abutments 20, 25 to open the latch fully. A further spring 27 connects the bolt 10 to the locking lever, control lever assembly to ensure correct positioning of these levers.
Patent GB-1133201-A (GB)
Title: Organosilicon compositions
Inventor: HARVEY JOHN HOWARD DEREK
IPC: C08K3/22
Filed: 1965-02-26
Abstract: 1,133,201. Cementitious compositions. MIDLAND SILICONES Ltd. 11 Feb., 1966 [26 Feb., 1965], No. 8454/65. Heading C1H. [Also in Divisions A5, C3 and D2] Building materials, e.g. sand/cement mixtures and plaster compositions are rendered water repellant by treatment with an aqueous dispersion of a polyorganosilicon composition prepared by first hydrolysing at least one hydrocarbon substituted organosilicon compound containing at least two Si-bonded chlorine atoms. The resultant hydrolysis product is first separated from by-product HCl and then combined with Ca(OH) 2  to give an aqueous dispersion or paste. Examples relate to the preparation of cement/sand and " Sirapite " (Registered Trade Mark) plaster building blocks incorporating small quantities, e.g. 1.5% by wt. of solids, of the organosilicon composition.
Patent GB-1275791-A (GB)
Title: Improvements in or relating to bottom roll bearing assemblies
IPC: D01H5/74
Filed: 1969-02-17
Abstract: 1275791 Bearings SKF KUGELLAGERFABRIKEN GmbH 17 Feb 1969 [17 Feb 1969] 8484/69 Heading F2A A clip 10, for retaining a bottom rolling bearing of a spinning machine drawer frame is insertable in a aperture 9 between the outer ring 2 of the bearing and a cap 6 secured to the ring by a grease nipple 7, has lateral stops 14 which extend laterally over the bearing pedestal 1. The clip may have a resilient lug 11 which after the clip has been inserted into the aperture 9 engages the abutment 12 in the aperture to prevent withdrawal of the clip.
Patent GB-313943-A (GB)
Title: Improvements in or relating to wireless receiving apparatus
IPC: H01F21/00
Filed: 1928-03-20
Abstract: 313,943. Elliott, M. E. March 20, 1928. Receiving-apparatus.-An inductance coil for use in a wireless receiving system which can be tuned by selecting-switches can be traversed for the whole of its length by an adjustable contact in order to determine the points which it is desired to connect to the switch contacts. The preferred form of coil comprises a flat spiral of wire over which a contact wheel 28, sliding on a rotary radial arm 27, Fig. 4, can be moved. A set embodying a detector valve followed by two low-frequency amplifying valves is described and the selecting switches are preferably of the two-pole type, each selected switch point 51, Fig. 6, for the aerial inductance coil 10 having associated therewith a switch point 52 for an adjustably-coupled reaction coil 39. The switches mav be such as to eliminate " dead-end " effects and a supplementary aerial tuning condenser 54 may be provided.
Patent GB-442258-A (GB)
Title: Improvements in or relating to coin testing devices
Filed: 1935-03-20
Abstract: 442,258. Testing coins. BRECKNELL, MUNRO, & ROGERS (1928), Ltd., Pennywell Road, and DOLMAN, H. J., Church Road, Staple Hill, both in Bristol. March 20, 1935, No. 8640. [Class 27] In a coin-testing device for rejecting bent or over-thick coins, the coins 13 roll along a laterally and downwardly inclined track comprising a fixed plate 1 and a pivoted rail 4, a pivoted feeler 3 being provided which is displaced by such coins, causing the rail 4 to be withdrawn from beneath the coin so that it falls into a return shoot. In Fig. 2 the rail 4 is operated by a solenoid 9 controlled by contacts 11, 12 which are engaged when the feeler 3 is displaced. The rail 4 is held away from the plate 1 a sufficient distance to reject over-thin coins by an adjusting screw 6. In Fig. 5 the rail 4 is biassed by a weight 15 into the coin-releasing position, but is normally retained in position by an adjustable screw 16 at a lower part of the feeler plate 3. In Fig. 8 the rail is operated by a bent-over extension 18 of the feeler plate 3 through an adjustable screw 17. An aperture may be provided in the plate 1 to return undersized coins. A modification is referred to in which the rail 4 normally projects beyond the lower edge of the plate 1, but is withdrawn to release a bent or over-thick coin. The device may be used between the coin controlled mechanism described in Specification 320,613, [Class 27], and a change-giving machine to prevent bent coins reaching the change hoppers.
Patent GB-337335-A (GB)
Title: Improvements in and relating to the suspension of overhead wires for electric railways
IPC: B60M1/23
Filed: 1930-03-18
Abstract: 337,335. Akt.-Ges., Brown, Boveri, et Cie. Oct. 10, 1929, [Convention date]. Systems of supporting cables and conductors; clips and holders for cables and conductors.- Means for suspending a number of live wires from pull-offs so that the direction of pull of the pull-off may pass along the line of action of the resultant of the forces acting on the live wires comprises a clamp carrying the live wires and formed with adjusting means for the point of suspension. In the construction shown in Fig. 1, a clamp comprises jaws b, c adapted to grip live wires a, an arm d on the jaw c being formed with notches e for the suspension wire. The arm d may be a separate piece inserted between the jaws and a centre rib of the clamp, or the arm d may be in one piece with a centre rib of the clamp. In Fig. 5, a distance piece g is formed with semicircular notches e, and carries at each end a live wire clamp b. A stirrup h, carrying the suspension wire i, engages one of the notches e. The distance piece may be formed with a longitudinal slot instead of notches, the suspension stirrup being adapted to be engaged at any point in the slot. Fig. 7 shows a triangular suspension, a bridge bar l carrying a clamp b at each end. The suspension wire i carries an adjusting clamp o which clamps in a separate wire n attached to one of the clamps b. The wires m, n are directly carried by the clamp jaws.
Patent GB-177058-A (GB)
Title: A new or improved toy for playing the game of football
IPC: A63H13/04
Filed: 1921-03-22
Abstract: 177,058. Morgan, F., and Newhall, P. March 22, 1921. Table games.-A toy for playing a game of table football comprises a base, with or without a background, goal posts connected by a bar or rod, a ball suspended on the rod, and means for supporting and operating dummy footballers. In the construction shown in Fig. 1, the dummy footballers g are pivoted on spring wires h which the players draw back hy means of loops h<1>. On release of the wires the dummy footballers drive the ball e along the rod d connecting the goal posts. Portions h<2>, h<6> limit the movements of the wires, which may be retracted by a spring. In a modification a back screen is provided behind which a hand-operated spring-pressed lever o, .Fig. 5, is pivoted, the dummy footballer being carried by an arm projecting from the lever and passing through a slot m in the back screen. The footballers may be carried upon spring-actuated slides. By widening the goal posts, a number of bars d and their co-operating parts may be provided.