baber/WOPTO huggingface dataset:
Patent GB-1130135-A (GB)
Title: All harmonic wave frequency divider for electrophonic musical instruments
IPC: H03K3/286
Filed: 1966-05-09
Abstract: 1,130,135. Electrophonic musical instruments. HAMMOND CORP. 9 May, 1966 [14 May, 1965], No. 20361/66. Heading G5J. [Also in Division H3] An electrophonic musical instrument, e.g. an electronic organ, employs a frequency-divider which produces at each stage a waveform having substantially equal amounts of odd and even harmonics, comprising in each stage a bistable circuit in which the two active elements are cross-coupled by capacitors of which one has a value at least three times that of the latter. Fig. 1 shows such a bi-stable circuit in which the transistors are cross-coupled by RC circuits of widely different time-constants, C46 being many times the value of C48. Preferably the product of the time-constant (C46 with R36 + R52 in parallel) and the operating frequency is around 150,000. The input is applied at 24 and an output is taken from terminal 68 of the waveform shown at 67. A further output is taken at 66 to the input of the next stage of the dividing chain. The equality of amplitude as regards even and odd harmonics can be improved by adding to the output a small portion of the signal from the other transistor (Figs. 3- 4, not shown). The bi-stable circuit can be made in integrated form.
Patent GB-1032751-A (GB)
Title: Improvements in and relating to the steam reforming of hydrocarbons
Inventor: BATES ERIC BILLINGSLEY
IPC: C01B3/38
Filed: 1962-05-28
Abstract: In a catalytic process for steam-reforming liquid or gaseous hydrocarbons having at least 2 carbon atoms in the molecule and a b.p. below 350 DEG  C., the following conditions are observed: a steam ratio of 1.3 to 5.5 moles per carbon atom in the hydrocarbon; a temperature in the range 550 DEG  to 750 DEG  C.; a pressure of at least 100 p.s.i.g.  Pressures up to 600 p.s.i.g. are mentioned, and the steam ratio is preferably 1.8 to 3.0.  The conditions are chosen in relation to plant and catalyst dimensions and space velocity so that the gas produced has an equivalent methane content (i.e. that quantity of methan having the same e.v. as that of the hydrocarbons present in the gas) of 10% by volume at least, and the space velocity is low enough to ensure a conversion of at least 92% by volume. Space velocities mentioned are of the order of 0.5 to 1.5 per hour for the liquid, or 470 gas volumes per hour (in one example) expressed as the equivalent volume of methane. The product gas may be modified by adding hydrogen or ethylene or by removing hydrogen and/or carbon dioxide, and it may be enriched by adding methane or other gaseous hydrocarbon or by carburetting the hot gas with a liquid hydrocarbon.  The catalyst may be nickel, e.g. as described in Specifications 953,877 and 916,216, or rhodium, platinum, palladium, ruthenium, osmium, or iridium as described in Specification 1,029,235, or nickel and platinum metal (Specification 1,032,752), all on refractory supports.  Eight specific examples are described.
Patent GB-1298642-A (GB)
Title: Halopyrazoles
IPC: C07D231/16
Filed: 1971-04-19
Abstract: 1298642 Halopyrazoles UPJOHN CO 19 April 1971 [19 Feb 1970] 20465/71 Heading C2C Compounds of formula wherein each X is halogen, m is 2 or 3, n is 0 to 3, R is hydrogen, C 1-10  alkyl or C 1-10  alkenyl, the group RCHC n H 2n  not containing more than 11 carbon atoms, and A is the carboxyl group, or a salt or C 1-8  alkyl ester thereof, the hydroxymethyl group or a C 1-9  alkanoyl ester thereof, the cyano group, or a carboxylic acid amide group, optionally substituted by listed groups, are prepared by one or more of (a) reaction of a halopyrazole salt with a haloester or halonitrile, (b) reduction of an ester to an alcohol, 4-dehalogenation occurring simultaneously, (c) ester hydrolysis, (d) reaction of an ester or acid halide with an amine, (e) dehydration of an amide to a nitrile with phosphorus pentoxide or phosphorus oxychloride, or (f) salification or salt hydrolysis. The products are herbicides and plant growth regulants.
Patent GB-460266-A (GB)
Title: Rove stop mechanism for spinning and like machines for the production of yarns or threads of flax, jute and the like
IPC: D01H1/00
Filed: 1935-07-19
Abstract: 460,266. Rove - stop mechanism and rollers for flax and like spinning &c. machines. FAIRBAIRN LAWSON COMBE BARBOUR, Ltd., and ANDERSON, J. K. July 19, 1935, No. 20501/36. Divided out of 460,191. [Class 120 (ii)] In spinning and like machines for flax, jute and the like, rove-stop means is coupled to the detector mechanism by means permitting adjustment of the upper rollers relative to the lower without disturbance of the stop mechanism. The rove-stop and detector mechanism comprise a gripping-lever 9 and detector 2 as described in Specification 460,191, and the connecting link 10 is slotted so that the connection of the link 9<c> thereto may be adjusted in accordance with the adjustment of the upper rollers which is effected by screws 6. The rails which carry the upper rollers engage the screw by a nut 6<a>, and the screws of the various sections are operated by worm gearing from a common shaft. The roller shafts of adjacent sections are coupled by Oldham couplings. The Provisional Specification describes a pawl- and-ratchet connection between the rove-stop means and the detector mechanism.
Patent GB-371238-A (GB)
Title: An improved nozzle-head for the artificial silk stretch-spinning process
IPC: D01D4/08
Filed: 1931-07-17
Abstract: <PICT:0371238/IV/1> An extrusion device for the stretch spinning of artificial silk comprises a spinnarette 7 mounted on a spinnarette holder 10 which latter is screwed on to a nozzle head 3, 6 provided with a supply duct having a bore 4 approximating in diameter to a single perforation of the spinnarette 7.  The spinnarette holder is preferably connected to the supply duct 4 only by a narrow bore 11. By this means it is ensured that only a small film can be formed when the spinning solution comes into contact with the air when the spinnarette holder is removed, and this may easily be removed before replacing the holder, and even if not removed is of sufficiently small size to be forced through the holes of the spinnarette.
Patent GB-318169-A (GB)
Title: Improvements in commutator connections for dynamo-electric machines
IPC: H02K13/04
Filed: 1929-07-05
Abstract: 318,169. Maschinenfabrik Oerlikon. Aug. 29, 1928, [Convention date]. Commutators.-The commutator connections of a dynamo-electric machine armature are strengthened by inserting them in sleeves secured to the commutator. As shown in Fig. 1, the connections 2 of the winding A, B are passed through copper and brass sleeves 3 which are soldered in slots in the commutator segments 1. The sleeves may be tinned so that on heating a solid connection will be established with the wires 2 and segments 1. The sleeve may be bent and secured to the coils by means of a binding strip 5, and insulation may be applied in the form of a drawnin cotton tube. The sleeves are arranged as shown in Fig. 2, so as partly to embrace the insulation 6 of the connections. In a modification, Fig. 4, slotted strips 9 are soldered into slots 4 in the commutator segments and the strips are bent over so that one portion 8 embraces and is soldered to the wire 2, while the other portion 7 embraces the insulated part of the wires with or without the interposition of a flexible insulating tube.
Patent GB-676589-A (GB)
Title: Rotor composed of rotary elements axially connected together, for multi-stage axial-flow turbines and compressors
IPC: F01D5/06
Filed: 1950-08-23
Abstract: 676,589. Turbines and compressors. ESCHER WYSS AKT.-GES. Aug. 23, 1950 [Sept. 21, 1949], No. 20873/50. Classes 110(i) and 110(iii) In a rotor for multi-stage axial-flow turbines and compressors comprising elements axially connected together, the rotor blades 1 of each stage are secured to rings 2, 3 and 4 and each pair of adjacent rings is connected to a common supporting disc 6a or 7, the two end rings being secured on their outer sides to end discs 8, 9 which have stub shafts 10, 11. The rings and supporting discs are held together by bolts 12 and the discs 6a and 7 have annular grooves to facilitate the introduction of the bolts. In the three-stage axial-flow compressor shown the rotor blades are adjustably mounted on ball bearings 5 and are operated by mechanism connected to the part 6.
Patent GB-358572-A (GB)
Title: Improvements in or relating to dentures
IPC: A61C13/225
Filed: 1930-07-10
Abstract: 358,572. Dentures. ROW, D. M., Crown Works, Berrymans Lane, Sydenham, London. July 10, 1930, No. 20951. [Class 81 (ii).] A metallic strengthener for a lower denture of the kind comprising an imperforate-metal cover plate overlying the outside face of the non-metallic body portion, is of elongated strip form and has the longitudinal edges overturned to form lips affording interlocking, e.g. dovetail, engagement with the body of the denture. A cover plate 10 of gold, rolled gold or other metal is shaped to overlie that face of the denture with which the tongue normally contacts and is formed with a securing lip 11 along its entire upper edge. The lower edge is overturned to form lips 12 only at the ends which are therefore of channel section, Fig. 3. Additional securing means such as one or more cupped tags 14 at the middle or ends of the plate may be employed, or each end may carry a bridge-piece 16, Fig. 6, adapted to be embedded in the denture. Any sharp edges are rounded off. According to the Provisional Specification, a coverplate of channel section at its middle portion is formed with ends of oval section to serve as a reinforcing bar for the denture.
Patent GB-888052-A (GB)
Title: Electric welding apparatus
IPC: B23K9/20
Filed: 1960-06-15
Abstract: 888,052. Welding by pressure. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 15, 1960 [June 18, 1959], No. 21032/60. Addition to 881,356. Class 83 (4). In stud-welding apparatus as described in the parent Specification, the stud is maintained spaced from the workpiece for a predetermined interval after the arc is struck by a mechanical locking device instead of by an electromagnet. Operation of the trigger 17 of a stud-welding gun raises a collar 39 to pivot a lever 33 which actuates a switch 18 and allows a spring 30 to pivot a cam 29 to press a flexible portion of a sleeve 28 into clamping engagement with the stud holder 23. The switch 18 after actuation completes a circuit for relay R2 to connect up the welding current and connects a resistance 19 in the circuit of a normally energized relay R1. When the arc strikes the output of rectifier 6 is in view of the resistance 19 insufficient to hold relay R1 which falls back. After a delay which may be adjusted a sluggish contact 13 of relay R1 connects up an electromagnet 11 which actuates a spring-loaded pawl 41 to release the sleeve 39 and so to pivot the cam 29. The stud is thrust by the spring 24 against the work 5 and the switch 18 is released. Relay R2 breaks the welding circuit.
Patent GB-1337479-A (GB)
Title: Tool head for turret lathes
IPC: B23Q16/08
Filed: 1971-04-19
Abstract: 1337479 Lathe turrets; indexing ZAVODY PRESNEHO STROJIRENSTVI GOTTWALDOV NARODNI PODNIK 19 April 1971 [4 April 1970] 21105/71 Headings B3T and B3B A lathe tool post or turret has interengaging toothed members for locating the tool post precisely in operative positions, a manually operated lever for elevating the tool post by means of a threaded sleeve (to disengage the toothed members) and for angularly adjusting the tool post, and two locating means for preliminary locating of the tool post before engagement of the toothed members comprising a radially directed and a vertically directed pawl. A tool post or turret for a turret lathe comprises a tool supporting member 4 which is located precisely in its several working positions by the engagement of toothed members 34, 36, the former being rigidly attached to a slide 1 on which the tool post is mounted and the latter, 36, being formed on a ring member 8 to which the plate 4 is bolted; a hand operated lever 53 is provided for indexing the member 4 and is connected through gears 54, 51 and 23 to a threaded sleeve 21 which is in threaded engagement with a member 19 fixed to the slide 1, operation of the lever 53 being thereby arranged to lift the tool post initially sufficiently to disengage the toothed members 34, 36. Arcuate segments 25, 26 projecting respectively from the gear 23 and a sleeve 27 provide a lost-motion coupling to allow for initial elevating motion of the tool post before angular drive is transmitted thereto; such angular drive is effected through the coupling segments 25, 26 to the sleeve 27 and through a one-way pawl and notch connection (Fig. 3, not shown) to a central hollow pin 15 which is coupled at its upper end by a claw connection 14 to a centre plate 12 connected to the members 8 and 4. Thrust bearings 17, 24 loaded by a spring washer 18 provide for the rotational and axial movement of threaded sleeve 21 relative to the central pin 15 during elevating movement. A vertically spring- loaded pin 39 engages conical depressions in the under surface of the ring member 8 to provide a certain preliminary angular location of the tool post before the toothed members 34, 36 engage; a radially disposed spring-loaded pawl 41 engageable in recesses 43 on an inner annular surface of a locking ring 9 performs a similar function, the pawl 41 being held retracted by a lever 47 which is controlled by a cam 49 mounted coaxially with the gear 51, rotation of the cam being therefore controlled in dependence upon operation of the hand lever 53. Angular adjustment of the tool post is used for resetting stops which control the longitudinal feed movement of the tools, the motion of the pin 15 being transmitted via hexagonal spindle 66, gears 67, 70, splined shaft 71 and gears 72, 73 to the stop drums.
Patent GB-1459032-A (GB)
Title: Inhibiting vanadium corrosion in a gas turbine engines
IPC: C10L1/12
Filed: 1974-05-13
Abstract: 1459032 Preventing vanadium gas turbine corrosion UNITED AIRCRAFT CORP 13 May 1974 [14 May 1973] 21125/74 Heading C5G Vanadium corrosion in a gas turbine engine whose combustion products contain vanadium in a form corrosive to hot engine alloy components is inhibited by exposing the combustion products, upstream of the components, to the oxide of a metal selected from the rare earths, yttium, scandium, nobium, nickel, cobalt and iron, forming a stable vanadate of the metal having a m.p. in excess of the combustion product temperature and not forming the sulphate or any other compound (apart from the vanadate) which is stable at the engine operation temperature and whose generation or presence would prevent the additive combining with the vanadium. The metal oxide may originate from an organometallic compound, e.g. yttrium acetyl acetonate dissolved in the fuel to the gas turbine.
Patent GB-782719-A (GB)
Title: Improvements in polymeric compositions
IPC: D06M15/244
Filed: 1955-07-22
Abstract: A vapour-permeable water resistant layer is made by mixing a polymer or copolymer of a haloethylene having 1 or 2 chlorine, bromine or fluorine atoms on only one carbon atom and from about 50 to 300 per cent of the polymer of a finely-divided non-hygroscopic material soluble in a non-solvent for the polymer, forming the composition into a thin layer, and washing with solvent to remove the non-hygroscopic material.  The product has a water vapour transmission of from about 50 to 200 grams H2O/100 in2/24 hours and a Suter hydrostatic pressure of from about 15 to 35 inch H2O. Specified polymers are those of vinyl or vinylidene chloride, bromide, or fluoride and their copolymers with each other or with vinyl esters, acrylic and alpha-alkyl acrylic acids, their alkyl esters, amides and nitriles, styrene, dichlorostyrene, vinyl naphthalene, alkyl esters of maleic and fumaric acids, vinyl alkyl ethers and ketones, vinyl pyridine, N-vinyl carbazole or pyrrolidone, ethyl methylene malonate, isobutylene, ethylene and trichloroethylene. Ter- and higher interpolymers may be used. Specified non-hygroscopic materials are sodium and potassium chlorides or bromides.  Plasticizers such as octyl diphenyl phosphate, tricresyl or tributoxyethyl phosphate, dioctyl adipate, azelate or phthalate, dibutyl phthalate, hexachlorodiphenyl oxide, toluene sulphonamide-aldehyde resin, and a composition comprising a water-insoluble cellulose ether, di-(4-t-butyl phenyl) monophenyl phosphate and di-(4-t-butylphenyl) mono - (5 - t - butyl - 2 - xenyl) phosphate may be present to form plastisols which may be made into plastigels by adding a minor amount of a thickening agent such as a metallic soap, e.g. sodium, calcium or magnesium stearate, aluminium or lithium distearate, and lithium hydroxy stearate, or into organosols using such diluents as mineral spirits or toluene. Stabilizers and processing aids may also be present.
Patent GB-712416-A (GB)
Title: Manufacture of acrylonitrile
Filed: 1951-09-10
Abstract: <PICT:0712416/IV (b)/1> In the manufacture of acrylonitrile by additive combination of hydrocyanic acid and acetylene in the presence of an aqueous cuprous salt catalyst, the mixture of gaseous reactant is produced by passing dilute gaseous hydrocyanic acid through water to produce a dilute solution thereof and expelling the hydrocyanic acid from the solution by means of an inert gas consisting of or containing acetylene, the quantity of inert gas used being such that the resulting mixture contains a higher proportion of hydrocyanic acid than the original dilute gaseous hydrocyanic acid mixture.  The production of acrylonitrile may take place at 80-100 DEG  C. in the presence of a catalyst comprising cuprous chloride, ammonium chloride or potassium and sodium chloride, and hydrochloric, hydrobromic, sulphuric or phosphoric acid.  The original hydrocyanic acid gas may be obtained by synthesis in an electric arc and may be absorbed in water at ordinary temperatures but preferably at 0-5 DEG C.  The expulsion thereof with acetylene may be at 40-90 DEG  C., preferably in countercurrent, the acetylene preferably being that recycled from the process, in which case 100 litres of acetylene per litre of catalyst are circulated.  In the drawing R indicates the reaction vessel, B the tower for recovering hydrocyanic acid and W the washing tower for recovering the acrylonitrile formed.  Dilute aqueous hydrocyanic acid solution, obtained by absorption from dilute gas, enters at 2 and passes countercurrent to acetylene entering at 6 in admixture, if desired, with nitrogen.  The mixture leaves at 1 to p  the reaction vessel R in which a circulation of the catalyst is induced by pipe S.  The products pass through pipe 11 to the washing tower W where the acrylonitrile is removed as a dilute solution at 5. The excess acetylene is recycled and a minor portion of contaminated acetylene is withdrawn at 7.  To start the process, nitrogen or carbon dioxide replaces acetylene until the hydrocyanic acid expelled has saturated the solution in R and appears in W.  The passage of acetylene is then commenced.ALSO:A hydrogen cyanide-acetylene gas mixture, suitable for the manufacture of acrylonitrite (see Group IV (b)) is prepared by passing a gas mixture poor in hydrogen cyanide through water at a low temperature to produce dilute aqueous hydrocyanic acid and expelling the hydrogen cyanide at a higher temperature with a quantity of acetylene so that the gaseous mixture contains a higher proportion of hydrogen cyanide than the starting mixture. The adsorption may take place at room temperatures or below, preferably at 0 DEG  to 5 DEG  C., whilst the explosion of the hydrogen cyanide may be at 40 DEG -90 DEG  C., the acetylene preferably passing countercurrent to a descending flow of aqueous hydrogen cyanide solution in a packed tower.
Patent GB-698842-A (GB)
Title: Improvements in or relating to steam traps
IPC: F16T1/34
Filed: 1951-09-10
Abstract: 698,842. Steam traps. GERDTS, G. F. Sept. 10, 1951 [Nov. 6, 1950], No. 21330/51. Class 64 (ii) The discharge orifice H of a steam trap widens in the outflow direction and a throttling member J is moved axially within it by a float or by a temperatureresponsive device such as a bimetal strip D or strips. Moreover, the dimensions of the orifice H and the throttle J are such that a small annular passage is open permanently for the outflow of condensate and an inner annular passage of larger sectional area is opened and closed by the head of the throttle, there being an adjustable abutment K for limiting the movement of the throttle in the closing direction. The movement of the bimetal strip D when a large quantity of condensate collects in the casing C causes movement of the throttle J into an outlet connection B, i.e., to the open position indicated in ghost lines. The screw K is set so that the larger annular passage is closed when the bimetal is at the temperature of the boiling point of the condensate at the desired operating pressure of the trap. A leaf spring L transmits the motion of the bimetal strip to the throttle J. In a modification, Fig. 2 (not shown), a multi-stage nozzle is formed by orifices, such as H, in series and successively larger towards the outlet B. Each has its throttling member which moves into an enlargement or chamber, to avoid throttling, in the same manner as the member J moves into the outlet B in Fig. 1.
Patent GB-480860-A (GB)
Title: Piston packings for fluid-pressure engines
IPC: F16J9/20
Filed: 1936-08-01
Abstract: 480,860. Piston - rings. CRAWSHAW, S. J. Aug. 1, 1936, No. 21346. [Class 122 (i)] A piston-ring comprises at least three thin split or segmental superposed laminations, the outer laminations being of cast iron and an intermediate one of bronze. Where more than three laminations are used the intermediate laminations may be all of bronze or alternately of bronze and cast iron or other metal. The ring may be expanded by a spring and pegs or other means may be employed for preventing relative movement of the laminations. British Specification 457,640 and U.S.A. Specification 2,030,927 are referred to.