baber/WOPTO huggingface dataset:
Patent GB-237878-A (GB)
Title: Improvements in diaphragms for acoustic apparatus
IPC: H04R7/06
Filed: 1925-06-10
Abstract: 237,878. Western Electric Co., Ltd., (Assignees of Lane, C. E.). July 30, 1924, [Convention date]. Loud - speakers; magnetic instruments; diaphragms. - A large direct acting conical diaphragm has an elliptic periphery. Preferably, the diaphragm is formed of two conical surfaces 6, 8 truncated obliquely to their axes so that each periphery is an ellipse. The edge of the surface 8 abuts against the inner portion of the surface 6 so that the edge 5 of the diaphragm is free to vibrate. The diaphragm is supported on a ring 13 at an opening in the rear face placed at right-angles to the axis. The ring 13 is carried by a standard 9 which also carries a bracket 12 for the telephone mechanism, the actuating rod 11 being along the axis of the front cone 6. This cone is formed from sheet material but may be in two sections 6, 7 the former of hard surfaced blotting paper and the latter of lighter and stiffer paper.
Patent GB-923250-A (GB)
Title: Process for the preparation of adiponitrile by the dimerization of acrylonitrile
Filed: 1961-04-26
Abstract: Adiponitrile is prepared by the reductive dimerization of acrylonitrile in an acidic aqueous reaction system to which is supplied during the reaction an alkali-metal amalgam and at least one organic polymerization inhibitor chosen from isatine, a quinone (e.g. hydroquinone, benzoquinone and anthraquinone), a polyphenol (e.g. pyrogallol), an aromatic amine (e.g. a - and b naphthylamine), an aminophenol, an aminoquinone (e.g. a - and b -aminoanthraquinone), or a quinonimine.  The action of the polymerization inhibitors may be promoted by the addition of a salt containing a ferrous, ferric, cobalt or nickel ion. Increased yields may also be obtained by the addition of acetone to the reaction mixture.  The alkalimetal amalgam may be produced concurrently with the reductive dimerization reaction and in a separate reaction system (e.g. an electrolytic cell), the amalgam being currently fed to the reductive dimerization reaction mixture while mercury is currently fed back from the latter to the amalgamproducing reaction system.
Patent GB-121935-A (GB)
Title: Improvements relating to Wrenches or Spanners.
Inventor: MCLEAN NORMAN
IPC: B25B13/10
Filed: 1918-09-18
Abstract: 121,935. McLean, N. Sept. 18, 1918. Wrench-jaw attachments.-The jaws a<1> are provided with removabJe liners c to adapt them for nuts &c. of smaller sizes. Each liner is formed with a dovetail projection c<2> fitting a corresponding slot b<2> in the wrench, and these may be slightly tapered to lock or hold the liner in position in the. jaw.
Patent GB-1064605-A (GB)
Title: Peri-naphthazole-indole dyestuffs
Inventor: BRACK ALFRED
IPC: C09B57/06
Filed: 1965-04-09
Abstract: The invention comprises dyestuffs of the formula <FORM:1064605/C4-C5/1> wherein A denotes the residual members of a 5- or 6-membered N-containing saturated ring, R3 is H, alkyl having 1-5 C or aralkyl, R4 is H, alkyl or alkoxy having 1-5 C or aryl and X is an anion and wherein the aromatic rings or A, R3 and R4 may contain non-ionic substituents, the dyes being free of ionic substituents. Suitable non-ionic substituents are F, Cl, Br, methyl, ethyl, isopropyl, methoxy, ethoxy, nitro, amino, acyl, sulphonamide, carboxylic acid esters and amides and nitrile radicals.  The dyes may be obtained by condensing compounds of the formula <FORM:1064605/C4-C5/2> with indole derivatives of the formula <FORM:1064605/C4-C5/3> and, when R3 is H the dyes obtained in the form of their salts are optionally converted to the base and treated with a quaternizing agent. The dyes may be employed to dye, print or bulk-dye synthetic polyamides, acetate silk, paper, leather or in offset printing, writing pastes and fluids and especially textile materials of acrylonitrile or vinylidene nitrile polymers.ALSO:Cyclic lactams having the general formula <F\1> wherein A denotes the residual members of a 5- or 6-membered saturated ring containing nitrogen and wherein the aromatic rings and A may bear non-ionic substituents, are prepared by reacting the corresponding 1,2,3,4-tetra hydro-7,8-benzo -quinoline with phosgene in an inert solvent or diluent and treating the resultant carbamic acid chloride with a Friedel-Crafts catalyst, e.g. AlCl3.  In examples, (1) 1,2,3,4-tetrahydro-7,8-benzoquinoline is so converted into the lactam which is (2) bromi nated with bromine or (3) chlorinated with sulphuryl chloride.
Patent GB-1263245-A (GB)
Title: Improvements in or relating to transportable equipment cabins
Inventor: SELBY RONALD PAUL
IPC: B60P3/14
Filed: 1968-03-29
Abstract: 1,263,245. Convertible vehicles. PLESSEY CO. Ltd. 20 March, 1969 [29 March, 1968], No. 15227/68. Heading B7B. [Also in Division E1] A transportable equipment cabin comprises a centre section with end walls 9, 10 to house electronic equipment and two end parts 2, 3 telescopically engaged over the centre section so as to be movable outwardly to provide space for operating personnel. The end parts are supported on guide bars 14, 16 sliding in guides fixed to the underside of the centre section and are preferably provided with folding floors 17.
Patent GB-143415-A (GB)
Title: Improvements in or relating to apparatus for cleaning and sawing used wood blocks, billets and the like
IPC: B27M3/04
Filed: 1919-06-18
Abstract: 143,415. Del Monte, L., and Best, C. E. June 18, 1919. Circular - saw machines; sawing - apparatus combined with apparatus for cleaning road blocks &c. - In a machine for re-surfacing wood road blocks &c., the worn blocks 12 are fed down a vertical hopper 11 in which both ends of the blocks are trimmed by rotary tools 19, and an endless conveyor 4 carries the blocks from the hopper first past rotary tools 26, 27, which trim their sides, and then to a circular saw 32; the tools 19, 26, 27 serve to remove the cement, grit, &c. from the edges adjacent to the worn surface to enable the saw to remove this surface. One side of the hopper comprises a flanged plate 11 and the other adjustable rods 13. The rotary tools are carried by pivoted arms 17 controlled by springs 21 whereby they are caused to deliver a series of hammer blows. Springs 30, 33 hold the blocks on the conveyor during the cutting operations. Adjustable fences 39 are provided.
Patent GB-1520618-A (GB)
Title: Hot spot thermometer
IPC: G01K1/02
Filed: 1977-04-13
Abstract: 1520618 Thermometers QUALITROL CORP 13 April 1977 [5 Aug 1976] 15318/77 Heading G1D A thermometer comprises a hollow body 17 through which gas (e.g. SF 6 ) is circulated via a pump 29 and connecting tubes 28, 30; within the body is mounted an expandable non-metallic rod 22, a tip 24 of the rod being close to a seat 26 formed by a reduced portion 21 of the body. As the rod expands, the flow of the gas is restricted at the region of the seat giving rise to a pressure increase, indicated by a gauge 31.
Patent GB-552598-A (GB)
Title: An improved potato harvesting machine
IPC: A01D15/04
Filed: 1941-11-28
Abstract: 552,598. Potato harvesters. REAVILL, F. Nov. 28, 1941, No. 15323. [Class 6 (iii)] Potatoes uncovered by blades F travel up one or more troughed grids E to a conveyer H which delivers them to a screen S and receptacle W for grading and sorting. The intermediate part E' of each grid is higher than the ends. A side-to-side oscillation is imparted to the blades and troughs by means of cams on vertical side shafts J, or by a crank and connecting rod linkage of such shafts to the troughs which are joined by links for synchronous movement. The troughs are moved on pivots G at their rear ends. The height of the main frame A may be adjusted relative to the front axles T<SP>2</SP>. Screwthreaded shafts secured to the axles engage in nuts U<SP>1</SP> rotatably mounted in bearings U<SP>3</SP> on the front of the framing A. Attached to the nuts U<SP>1</SP> are worm wheels U<SP>4</SP> engaged by worm wheels on a cross shaft which can be rotated by a handle.
Patent GB-926590-A (GB)
Title: Improvements in or relating to electric cables
IPC: H01B7/22
Filed: 1961-04-27
Abstract: 926,590. Cables. COMPAGNIE GENERALE D'ELECTRICITE, and SOCIETE DE PROSPECTION ELECTRIQUE PROCEDES SCHLUMBERGER. April 27, 1961 [April 29, 1960], No. 15329/61. Drawings to Specification. Class 36. A conductive core comprises a central wire around which are wound a plurality of wires, only one of which is a steel wire. The steel wire produces an undulation in the central strand and thus allows this to stretch and resume its shape without kinking when the core is subjected to tension, e.g. when employed in boreholes.
Patent GB-567562-A (GB)
Title: Improvements in vehicle wheels and their production
IPC: B60B25/02
Filed: 1943-09-18
Abstract: 567,562. Vehicle wheels. DUNLOP RUBBER CO., Ltd., and BUTLER, H. J. Sept. 18, 1943, No. 15333. [Class 144 (ii)] The removable tyre-retaining flanges of vehicle wheels are formed by a series of cells, each cell having a base 1 nesting in the opening of an adjacent cell. Each cell has a rimseating part 2a and a tyre-retaining part 2b, the cell of Fig. 3 also having a tyre beadseating part 2c. The recess 2d is provided for the rim shoulder on one side or the locking ring on the other side. The base 1 and adjacent wall provides a shallow step 3 which rests within the adjoining cell, each cell being tapered to form an annular assembly. The cells are pressed from sheet steel and are brazed together whilst positioned around a former.
Patent GB-235597-A (GB)
Title: Self-locking safety-bolt
IPC: F16B39/24
Filed: 1925-06-13
Abstract: 235,597. Romoli, A. June 14, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Locking nuts.-A nut g is locked to a bolt a by a slit washer e having an inwardly projecting lug engaging a spline groove in the bolt while one side f of the split portion of the washer engages radial ratchet teeth in the base of the nut.
Patent GB-1171224-A (GB)
Title: Improvements in or relating to Vibration Dampening Pads
Inventor: GOUBERGEN WILLY VAN
IPC: F16F1/376
Filed: 1967-04-04
Abstract: 1,171,224. Resilient mounting pads. IMEXIN S.A. N.V. 4 April, 1967 [5 April, 1966], No. 15443/67. Heading F2S. A vibration damping pad for supporting machines, bridges, &c. comprises a web 1 of resilient rubber or synthetic material at least one of its upper or lower faces, or both as shown, being provided with elevations, e.g. studs or ribs, which are arranged in mutually identical groups, the elevations in each group having mutually different heights above the corresponding surface of the web. As shown, each group consists of four studs 2-5 of progressively increasing heights disposed on both of the upper and lower faces of the pad, the groups on one face being so disposed relative to those on the other face that equally high studs are offset relative to each other. The shorter studs have a greater cross-sectional area.
Patent GB-728721-A (GB)
Title: Improvements in and relating to overload protective systems
IPC: B30B15/28
Filed: 1953-06-04
Abstract: 728,721. Gearing for stopping and starting machinery. CRARY, L. R. June 4, 1953, No. 15446/53. Class 80 (2). A system for protecting from damage due to over-load a power-driven machine, such as a press 10, susceptible to damage at torque limits which vary according to the positions of the machine parts during each cycle of operations, the torque limit being constant over part of each cycle, comprises an electromagnetic clutch 11 capable of transmitting torque up to a limit determined by the current supplied to it and means for adjusting the supply of current to the clutch during the working stroke of the machine, these means consisting of a current flow controlling device operated in synchronism with the machine to deliver current to the clutch at a constant rate during a portion of the working stroke and at a varying rate during the remaining portion of the working stroke. The clutch 11 comprises a driving member 11a, Fig. 3, carrying a coil 11i and having teeth 11g co-operating with similar teeth on a driven member 11d splined and axially movable on a shaft 11e. The current flow controlling device consists of a conductor 12c, Fig. 2, rotating in synchronism with the machine, e.g. with the crank 10p of the press, and sliding over conducting strips 12g, 12b, 12f to which current is fed from a battery 12a or other source, the strips 12b, 12f being separated by a gap 12h. The rotating conductor 12c is in circuit with a main controlling rheostat 12e and the clutch coil 11i and is so rotated by the press crank-shaft that it travels over the resistances 12b, 12f when the crank is at its lowest point and the maximum effort is being exerted on the work ; the frame of the press is liable to fracture during this part of the working cycle if the machine is overloaded and the reduction of current through the clutch coil allows the overload release clutch to slip more readily under these conditions. As shown, the press 10 is driven from an electric motor 10j through belt gearing, a main clutch 10n used for starting and stopping the press, and the overload release clutch 11. The current flow control device can be modified to give two or more periods of reduced current flow during each working cycle, e.g. for use in a double-acting toggle press where the toggle acts at a different time to the crank.
Patent GB-1311512-A (GB)
Title: Valves for pressurised dispensing containers
IPC: B65D83/44
Filed: 1970-04-01
Abstract: 1311512 Dispensing measured quantities of liquid LABLABO S ARL 1 April 1970 [4 April 1969 14 Jan 1970] 15492/70 Heading B8N [Also in Division F1] A valve which closes under the sole action of pressure within a container 40 comprises a valve member 6 which is slidable in a body 4 and has projections 16, 17 which engage slots 34, 35 in a sheath 37, to limit movement of the member. The valve may have a measuring chamber 9 containing a flexible diaphragm 8 which when the valve is opened by hand pressure, stretches under the pressure of liquid rising through bores 23, 31, 32, 24, 12 so that the liquid fills the chamber. When pressure is removed the valve automatically closes and liquid is discharged by contraction of the diaphragm through bores 20, 21 and a pipe 25. When the liquid contains a dissolved gas the diaphragm is omitted, Fig. 6 (not shown), as the gas pressure in the chamber is sufficient to discharge the liquid. A projection (13), Fig. 3 (not shown), engages an opening in a cap 42 to ensure alignment of the bores 20, 21.
Patent GB-946332-A (GB)
Title: Improvements in or relating to micrometers
IPC: G01B3/28
Filed: 1961-04-28
Abstract: 946,332. Depth gauges. S. NAKATA. April 28, 1961, No. 15527/61. Heading G1M. A depth gauge comprises a body 1, having an aperture 2, for a measuring rod 3, and a threaded spindle 4 for rotation within the body. The spindle 4 has ball means 7 serving as an abutment for rod 3 and spring means comprising a split ring 9 in a spring bushing, to grip rod 3. Spindle 4 is rotated by a micrometer thimble 16 and rod 3 is rotated with the spindle by means of split ring 9 until the rod 3 engages the measuring surface. When the friction between the measuring surface and end 13 of rod 3, due to pressure of ball 7 on end 14 of rod 3, is greater than that between the ring 9 and rod 3 the rod stops rotating with thimble 16. At this point the reading is taken.
Patent GB-921441-A (GB)
Title: A new or improved land drainage system and apparatus
IPC: F04D29/70
Filed: 1958-05-15
Abstract: 921,441. Agricultural drainage. S. M. HAWES. Aug. 14, 1959 [May 15, 1958], No. 15604/58. Addition to 801,854. Class 33. In apparatus for carrying out land drainage according to the parent Specification the pontoon float (a) comprises bouyancy sections bridged by a cross-bearer on which a pump and its motor are supported with the impeller disposed near the waterline (so that the pump is self primed) and surrounded, as is the water intake, by a screen on the buoyancy section; or (b) is tubular and has mounted therein two motor-driven pumps of different size and side by side with their water intakes screened and disposed below or at the water line of the float so that they are self-primed, their outlets being connected to water delivery means. In one form for (a) (Fig. 3) the sections are arranged as a ring-shaped buoyancy tank 20 around an axial flow pump 24, with its inlet 25 beneath the water line WL supported through a cross bearer 27 by a bracket 28 and a water delivery pipe 26 coupled to the main pipe 33. To the shaft of the pump 24 is coupled a drive shaft 31 of the motor 29 supported on a frame 30. Removable screens are formed by walls 22 of a water inlet chamber 21 and the tank 20. In another form the impellor of a centrifugal pump is below the water line WL and mounting means for the motor and pump allow vertical adjustment relative to the bearer. The same system of mounting may be adopted with (a) buoyancy tank(s) of different shape. In the (b) type, delivery from the two pumps may be by a single pipe having a number of channels, or by two or more pipes each having one or more channels and there may be means for selectively operating different rates of delivery. In one form the two pumps 49, 51 (Fig. 6) deliver into a valve box 45 connected to one or more delivery pipes 42 and incorporating a valve flap 57 which according to its position opens one pump to the output while shutting off the other. Water enters the pumps 49, 51c powered by motors 50, 52) through an inlet trunk 46 receiving from a grating at the inlet end. By use of suitable means the pumps rise and fall with the level of the water.
Patent GB-238194-A (GB)
Title: Improvements in electric oil switches
IPC: H01H33/75
Filed: 1925-06-17
Abstract: 238,194. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts Ges.). Aug. 8, 1924, [Convention date]. Oil switches of the type in which the circuit is broken in an explosion pot or chamber have the chamber in the form of a cylindrical metal wall a closed at its lower end by an insulating - plate c through which passes the movable contact b. The plate c has a peripheral groove e into which proje,ets the flange f of a divided clamping ring d secured by screws to the chamber wall a. The clamping ring is screened from the movable contact by making the diameter of the insulating plate c greater outside than inside the explosion pot. The closing member k at the upper end of the chamber forms the fixed contact h. An insulating cylinder g can be placed over the entire chamber.
Patent GB-625355-A (GB)
Title: Improvements in or relating to the production of pesticidal compounds or mixtures comprising said pesticidal compounds
IPC: C07C17/10
Filed: 1947-06-16
Abstract: Longifolene (C15H24) is treated with chlorine to give a mixture of products having an average chlorine content of 3 to 8 chlorine atoms per longifolene molecule and showing pesticidal properties.  The hydrocarbon is treated with dry chlorine in the presence of iodine in a quartz flask subjected to the rays from a mercury-vapour lamp, fractions being withdrawn successively when the desired increase in weight has taken place. The preferred product is that containing 3-4 chlorine atoms per molecule of longifolene, which gives four fractions on distillation, showing on analysis compositions corresponding to di-, tri-, tetra- and penta-chloro-longifolenes respectively.ALSO:Pesticidal compounds, or mixtures of such compounds, are obtained by the introduction of 3 to 8 chlorine atoms into longifolene (C15 H24), the preferred product having 3-4 chlorine atoms per molecule of longifolene.  Such products may be used against insects or bacteria, Calandria granaria, L., being specified.
Patent GB-630560-A (GB)
Title: Method and apparatus for cooling a powder formed from a molten metal
IPC: B22F9/08
Filed: 1946-05-24
Abstract: 630,560. Atomizing metals. FORTON H. R. May 24, 1946, No. 15845. Convention date, June 25, 1945. [Class 82 (ii)] [Also in Group XIII] Metal e.g. zinc, aluminium, tin, lead; copper, iron or their alloys, is atomized by being heated to molten condition in a furnace 10 (see Fig. 6), and forced through a nozzle 11. The nozzle 11 comprises a discharge tube 12 through which the molten metal leaves the furnace, and a spaced member 13 forming with the tube 12 an annular converging passage 14 communicating with a compressed gas chamber 15, the gas from which atomizes the metal as it leaves the tube 12. On emerging from the atomizer the metal particles are cooled in a rotating drum or drums 17, 35 fitted interiorly with longitudinal baffles 44, (not shown) the particles being drawn through the system by a stream of cooling gas, e.g. air, produced by a suction blower 40, into the baghouse 39; the particles which fall out of the gas stream are continually re-introduced into the gas stream by the action of the circumferentially spaced baffles 44.
Patent GB-496894-A (GB)
Title: Improvements in or relating to water closets with built in evacuators
IPC: E03D11/14
Filed: 1937-06-08
Abstract: 496,894. Sanitary closets. AMERICAN RADIATOR CO. June 8, 1937, No. 15856. Convention date, July 16, 1936. [Class 26] A closet comprises a sealed bowl having a down-leg 17 which is internally unrestricted and free from bends, substantially vertical, which terminates in a flat or slightly dished surface 19 perpendicular to the longitudinal axis of the leg and which has a discharge opening 20 near its bottom, but above said flat surface. The surface 19 has an area substantially equal to the cross-sectional area of the down-leg. The latter and the bowl may be integral and it and the discharge opening, which has its wall surface cylindrical, are at right-angles. The closet may be provided with a flange for connection to a wall and a groove 22 and 23 permits a soil-pipe connection to be made.
Patent GB-164239-A (GB)
Title: Telephone systems
IPC: H04B3/14
Filed: 1920-06-11
Abstract: 164,239. Western Electric Co., Ltd., (Western Electric Co., Inc.). June 11 1920. Addition to 151,140. Speech-wave components, equalizing attenuation of; thermionic relays and repeaters.-In transmission systems having attenuation-equalizing means as described in the parent Specification arranged in shunt with the transmission line, means are provided in series with said equalizing means to prevent substantially the flow of current of a particular frequency across the shunt connection. Such means may be a circuit tuned to the frequency of the ringing or other signalling currents so that the shunt circuit becomes antiresonant to that frequency. Fig. 2 shows the application to a vacuum-tube repeater. The attenuation-equalizing circuit 12 of the kind described in the parent Specification usually has high impedance for the higher frequencies in the voice range and relatively low impedance for the lower frequencies, and is connected in series with the tuned circuit 15 and with the potentiometer 22. The tuned circuit comprises capacity and inductance and may also contain resistances.