baber/WOPTO huggingface dataset:
Patent GB-1088711-A (GB)
Title: Amplitude-frequency converter circuit
Inventor: WATTERS ROBERT LAWRENCE
IPC: G01M3/20
Filed: 1965-04-30
Abstract: 1,088,711. Detecting leaks in a vacuum system electrically. GENERAL ELECTRIC CO. April 30, 1965 [June 5, 1964], No.18375/65. Heading G1N. [Also in Division H4] In a method of detecting leaks in a vacuum system during evacuation thereof, a flow of tracer gas is directed on a localized area of the external surface 53 (Fig.4) of the system 50, and a proportion of the gas is ionized continuously and collected at an electrode 57. At a leak, tracer gas (e. g. nitrogen) is admitted and increases the ionization probability, and thus increases the magnitude of a current in an external circuit connected to the electrode 57. The current is converted in a sensor unit (circuit Fig.1 not shown) into an A. C. signal having an audio frequency that varies in accordance with the magnitude variations of said current or alternatively in accordance with the variations in the rate of change of magnitude of the current (using Fig.3 circuit in combination with Fig. 1). The audio signal is fed to ear phones whereby an operator is warned immediately of the presence of a leak as a probe 54, directing the tracer gas, scans the said surface. The ion current can either increase or decrease in response to a leak depending on whether the tracer gas is more or less readily ionizable than the gas normally present in the system 50. Instead of using the probe nozzle 54 there may be a tube, surrounding the vacuum system, having a plurality of gas emitting nozzles directed toward the system, and gas may be emitted sequentially therefrom in a programmed sequence. In the amplitude frequency converter circuit Fig. 1 (not shown) the audio signal is produced by controlling the charge and discharge rate of a capacitor (1) in series with the ear phones, the ionization current magnitude being used to change the state of (switch on and off) transistors which are effectively in parallel with the capacitor, thereby providing a relaxation oscillator the frequency of which is dependent on the amplitude of the input signal from the sensor. The claims are directed to the amplitude/frequency converter circuit. (See class H4L).
Patent GB-184255-A (GB)
Abstract: 184,255. Moss, E., and Moss, W. May 5, 1921. Tyre covers, tools for removing and replacing.-A tool for expanding and contracting split rims comprises a pair of clamps c having pins d to engage holes near the rim ends and secured by wing nuts g, to the squared ends of oppositelyt-hreaded shanks b connected by a turn-buckle a.
Patent GB-153066-A (GB)
Title: Improvements in or relating to buttons, tacks, pins or the like, used in connection with upholstering and for other purposes and in the manufacture of such articles
IPC: B21G5/02
Filed: 1919-07-25
Abstract: 153,066. Bowater, T. J. July 25, 1919. Buttons.-A button, tack &c. for upholstery and other purposes comprises a sheetmetal shank and a leather &c. head. The shank has a pointed body portion 1, Fig. 1, and a bifurcated upper portion 2, which may form shoulders 14 with the body 1. To attach the head, the shank is placed in a die 4, Fig. 2, and by the desoent of a plunger 6, a piece of leather &c. is punched from a strip 7 and forced over the prongs 2, which are splayed into the material, to form a head 8, Fig. 3. A sliding centre to the plunger enables the button &c. to be ejected should it adhere to the punch. The head may be solidified about the prongs 2 by a further stamping process.
Patent GB-757838-A (GB)
Title: Improvements in or relating to flexible tube pumps
Inventor: DIBDIN THOMAS JAMES RIMBAULT
IPC: F04B43/12
Filed: 1953-06-25
Abstract: 757,838. Flexible tube pumps. DUNLOP RUBBER CO., Ltd. June 23, 1954 [June 25, 1953], No. 18474/54. Divided out of 757,801 [Group II]. Class 110(2) The rollers 17 of a flexible tube type pump have attached pinions which engage a fixed internally toothed gear ring causing the rollers 17 to rotate in such a way that there is no relative movement between a roller 17 and the flexible tube 21 at their point of contact. An abutment 3 presses the tube 21 into engagement with the rollers 17 by means of adjustable springs 5. The abutment 3 is supported on two pivoted arms 7. A lever 9 withdraws the abutment 3 to facilitate replacement of the tube 21.
Patent GB-836329-A (GB)
Title: Boring head
IPC: B23B29/034
Filed: 1958-06-10
Abstract: 836,329. Boring-heads. BRINEY MANUFACTURING CO. June 10, 1958 [Oct. 14, 1957], No. 18503/58. Class 83 (3). In a boring-head, having an adapter 10 attachable by bolts to a machine-tool spindle at 12, the tool 48 is roughly-adjustable radially by oscillating it.in a tapered recess 44 of a holder 20 secured to the adapter, and is finely-adjusted by rotating the holder, an extension 28 of which is mounted on balls 30, Fig. 3, in an eccentric recess 14 of the adapter. The holder is forced against a face 40 of the adapter by a bolt 32, screwing in the holder, a spring 34, and a ballbearing 38. The tool is positioned and held in the recess 44 by set-screws 52, 54, a set-screw 56 acting as a pivot about which the tool is oscillated. Holes 62 provide for rotating the holder 20 by a wrench, a scale thereon indicating the adjustment. The bolt-assembly 32 may be covered by a cap. The recess 44 is parallel to the longitudinal axis at 44', Fig. 3.
Patent GB-424117-A (GB)
Title: Improvements relating to the manufacture of closed, hollow bodies from plastic materials
IPC: B28B3/26
Filed: 1934-06-22
Abstract: 424,117. Moulding hollow blocks in extrusion-machines. PUTTERLIK A SPOL, J., 59, Spalena, Prague. June 22, 1934, Nos. 18519, 18520, and 18521. Convention dates, June 22, 1933, Dec. 12, 1933, and March 26, 1934. [Class 87 (ii)] In extrusionmachines for moulding hollow blocks, filled casings, and the like, in which an extruded column of alternating solid and hollow section is formed into completely-closed hollow blocks or shells by severance through the solid sections, (1) A jacketed core is used to supply the inner plugs of clay to complete the solid sections, and compressed air forced through, or air at atmospheric pressure drawn by suction through the jacket is delivered at the outer end of the core when the feed through the core is interrupted so as to prevent a vacuum being formed in the hollow space succeeding each plug, thus promoting the severance of each plug from the bulk remaining in the core. (2) An adjustable oscillating valve or stop is provided to regulate the admission of clay to the interior of the core. (3) The core is carried on a hinged door forming the front of the extrusion nozzle. In the illustrated form the interchangeable core is carried by the door 2 hinged at 3 and is positioned by pins 6 engaging recesses in the door surface. The core is formed with a jacket 7 through which compressed air is delivered by pipes 9 to the end surface 8. The interior surface of the jacket is preferably waved or corrugated. An oscillating valve 13 alternately covers and uncovers the orifice 16 in the core, the longitudinal axis of the valve being inclined upwardly at about 30 degrees when the orifice is closed. In the modified construction shown in Fig. 4, the valve 19 is reversed and is mounted in a rearward extension of the core. It is stated that other gases such as oxygen, or a liquid such as perfume, or semi-solid or granular material may be forced through the jacket instead of compressed air to fill up the hollow spaces and thus produce a filled article, for example, a shell of soap with a filling of a different quality.
Patent GB-203644-A (GB)
Title: Improvements in or relating to automatic loaded valves, particularly for vents of oil tanks and like containers
IPC: F16K17/19
Filed: 1922-06-19
Abstract: 203,644. Krafft, J. C. P. de, and Ball, W. H. June 19. 1922. Safety valves.-A valve device for relieving excess pressure or vacuum particularly applicable for use on oil storage tanks and in which the pressure relief valve 16 and the vacuum relief valve 30 seat at the ends respectively, of an inner casing 18 supported axially in an outer casing 52 by hollow radial webs 24 has the valve stems adapted to telescope one within the other. The supporting webs act as vent ports to an annular chamber 26 formed by a coned cover 46 screwed on to the casing. The lower end of the cover has a valve seat 40 adapted to be engaged by a corresponding valve face on the manually actuated valve 36 which has a screw threaded engagement at 42 with the main casing. The member 36 also carries a frame 64 fitted with gauze to protect the vent aperture, and with a, flange 68 to engage a flange 70 on the cover when the valvel is fully opened. Both the automatic valves have guide spiders engaging the seat apertures and have also upstanding guide tails the one on the valve 30 engaging a socket 74 on the cover and the one on the valve 16 engaging a socket 86 depending from the other valve 30. The valve 16 is loaded by a spring 22 adjusted by nuts 92, 94 engaging the outside of the socket 86 while the valve 30 is loaded by the spring 22 and a spring 34 acting in opposition to the spring 22 and adjusted by nuts 78, 82 on the socket 74. In a modification the springs are separately adjusted by screwed members, disposed within the inner casing. In a further modification the valves are weight loaded and the cap 46 is adapted to be moved axially to engage a fixed seat.
Patent GB-570900-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28F9/18
Filed: 1943-11-10
Abstract: 570,900. Brazing radiators &c. CLIFFORD MANUFACTURING CO. Nov. 10, 1943, No. 18684. Convention date, Oct. 7, 1942. [Classes 83 (ii) and 83 (iv)] Thin-walled, tubular heat-exchangers for radiators, oil coolers, intercoolers, &c., are made by inserting the tubes 10 of uniform diameter in closely-spaced holes in headers 12, 14, applying limited amounts of brazing material or hard solder 32 in finely-divided or sprayed form to the parts, applying flux in small particles 34 above the brazing material and heating the assembly in a heated atmosphere to a temperature sufficient to melt the brazing &c. material. ' The parts may thus be brazed instead of soft soldered without damaging the tubes by the dissolution in a large mass of brazing material &c. The tubes may be of copper, brass, aluminium or other non-ferrous metal or alloy and the headers of copper, brass, aluminium or alloy thereof or the alloy sold under the Registered Trade Mark " Monel," headers of copper, brass or Monel metal being preferably used with copper tubes and headers of aluminium or alloy thereof with aluminium tubes. The assembly after brazing is placed in a tank or casing which is secured to the header flanges by torch brazing or line welding. The ends of the tubes are shaped to hexagonal form, either before or after the headers are secured in the casing. One or more intermediate headers 18 may be used for supporting long tubes or to serve as baffles. The tubes may be of the order of 0.005" to 0.007" in thickness. The tubes may be inserted in the header 10 and arranged vertically and loose granules 32 of brazing material of a size varying from a fine powder to 0.025", poured into the top of the header and flux 34 in fine particles and preferably of the same density, uniformly distributed over the brazing material. The assembly is preferably shaken to distribute the material uniformly, and is then placed in an oven in which the brazing material is melted by circulation of hot air therethrough. After one header is brazed the assembly is turned over and the other ,end treated in a similar manner, the downward currents of hot air or gas melting the brazing material at the top of the assembly without melting the brazing material at the other end. In a modification, the parts may be arranged as in Fig. 2 and the brazing material sprayed on to the surface by a metal spraying-gun and then covered with flux and heated as in the first method. U.S.A. Specification 2,298,996 is referred to.
Patent GB-213823-A (GB)
Title: Improvements in means for securing handles to broom heads
IPC: B25G3/12
Filed: 1923-07-20
Abstract: 213,823. Balcombe, W., and Rapley, A. A. July 20,1923. Handles with clamping- devices for brushes; clamping and contracting devices for socket fixings.-A device for fixing or locking a handle in the socket of a brush head, comprises a gripping member A engaging the head B and handle C and a ring or like member D encircling the handle C and having a screw connection, such as the screw and nut D<1>, D<2>, with the member A so that pressure may be applied to bind the handle in the socket. The ring D may be replaced by a U-shaped member with a nut on each leg. Handles combined with other appliances.-In a modified form of the member A the end engaging the head B is widened, and the part between the two gripping portions is turned outwardly to form a scraper.
Patent GB-459145-A (GB)
Title: Manufacture of basic triphenylmethane dyestuffs
IPC: C09B11/20
Filed: 1935-07-01
Abstract: Basic triphenylmethane dyes, soluble in water, are made by condensing a tetra-alkoxalkylated, substituted or non-substituted p : p<1>-diaminobenzophenone with a p-alkoxydiphenylamine or a p-alkyldiphenylamine or by exchanging in a tetra-alkoxyalkylated p : p<1>-diaminotriphenylmethane dye containing in p-position to the carbinol atom a chlorine atom, an alkoxy, sulpho or amino group, the said atom or group for a residue of a p-alkoxyphenylamine or a p-alkylphenylamine. According to examples: (1) the leuco compound obtainable by sulphuric acid condensation of p-chlorobenzaldehyde with di-(methoxethyl)-m-toluidine is oxidized with lead peroxide to a green dyestuff which is melted with p-toluidine (fast bright greenish blue on tannin-mordanted cotton, wool and silk); (2) 4 : 4<1> - tetramethoxyethyl - 2 : 2<1> - dimethylbenzophenone is condensed with p-tolylphenylamine in presence of phosphorus oxychloride (blue); (3) the leuco compound obtained by condensation of p-methoxybenzaldehyde and di-(methoxethyl)-m-toluidine is oxidized with lead peroxide and the green dyestuff obtained is melted with p-phenetidine (bright blue).  Tetra-alkoxalkylated p : p<1> - diaminobenzophenones used as parent materials can be prepared by condensing the appropriate dialkoxalkylaniline with phosgene in the presence of zinc chloride. The Specification as open to inspection under Sect. 91 refers to halogen atoms as replaceable substituents in the triphenylmethane dyes and to the use of p-alkoxy- and p-alkylarylamines in the replacement.  Di-(ethoxethyl)-aniline may be used instead of the m-toluidine derivative in (1) and p-anisidine instead of p-phenetidine in (3).  This subject-matter does not appear in the Specification as accepted.
Patent GB-1219256-A (GB)
Title: Method of copolymerizing unhindered conjugated dienes with maleic anhydride
IPC: C08F22/04
Filed: 1969-04-11
Abstract: 1,219,256. Maleic anhydride-conjugated diene copolymers. BORG-WARNER CORP. 11 April, 1969 [26 April, 1968], No. 18820/69. Heading C3P. A maleic anhydride-conjugated diene copolymer is prepared by reacting the maleic anhydride and a conjugated diene in an inert polar organic solvent medium which is maintained at least nearly saturated with a sparingly soluble (defined), free radical-generating catalyst and a catalyst activator. The exemplified system is ammonium persulphate-sodium bisulphite. Preferably the diene is continuausly added to the reaction mixture.
Patent GB-116041-A (GB)
Title: Improvements in Collapsible Receptacles, such as Packing Cases and the like.
Inventor: WHITE ROBERT JOHN
IPC: B65D6/16
Filed: 1917-12-21
Abstract: 116,041. White, R. J. Dec. 21, 1917. Knock-down boxes etc.; corner joints. - The front a and back b carry undercut guide-bars c, d, which have sliding engagement with similarlyshaped strips f on the outsides of the ends e; the interlocking parts extend only for a part of the height of the box, so as to provide shoulders or abutments g, h to limit the movements in assembling the parts. The back b, shown partly slid into position, carries a hinged lid o, v-hich mav be permanently secured thereto. Before applying the back b, the bottom j is slid from the rear into grooves in the ends c, and it rests on fillets on the ends and on the front a; the bottom carries battens, which bear laterally against the fillets on the ends, and it carries also a fillet at the back flush with the battens and the other fillets. The back and bottom may be connected together by means such as a cord passing through both and tied and sealed, and the lid may be similarly secured. The parts, when separated, may be placed flat on one another for transport.
Patent GB-519572-A (GB)
Title: Steel
IPC: C21C7/00
Filed: 1938-06-27
Abstract: 519,572. Alloys. INLAND STEEL CO. June 27, 1938, Nos. 19010 and 19011. Convention dates, Nov. 30, 1937, and May 14, 1938. Drawings to Specification. [Class 82 (i)] Iron and iron alloys containing not more than 1À7 per cent. of carbon contain also 0À03- 0À478 per cent. of lead in a state of dispersion throughout the metal, the products being stated to have improved machinability. There may also be present up to 0À5 per cent. of sulphur, and one or more of the following elements : manganese, silicon, nitrogen, phosphorus, nickel, copper, chromium, molybdenum, vanadium, tungsten, zirconium, titanium, tantalum, aluminium, and niobium ; or the alloy may be a stainless steel. The lead may be added as metallic lead, litharge, galena, lead sulphide, orthophosphate, or other lead compound, a lead-tin-antimony alloy, a lead-tin alloy, or a copper-lead-tin alloy. Preferably the lead is added to the molten steel in the ingot mould in sub-divided form after a small amount of steel is in the mould, a stream of lead particles being delivered against the stream of steel entering the mould. The Specification as open to inspection under Sect. 91 includes also the subject-matter of Specification 519,615. This subject-matter does not appear in the Specification as accepted.
Patent GB-866944-A (GB)
Title: Improvements in and relating to vehicles for detecting levelling faults in railway tracks
IPC: B61L1/20
Filed: 1958-06-13
Abstract: 866,944. Detecting levelling faults in railway tracks. MATERIAL INDUSTRIEL S.A., and CONSTRUCTIONS MECANIQUES S.A. RENENS. June 13, 1958 [June 17, 1957], No. 19029/58. Class 105. Apparatus for detecting levelling faults in railway tracks and distinguishing between faults due to sleepers, improperly supported and deformation levelling faults comprises a carriage supported on the rail at two or more points and of weight to deform on unsupported rail and has pivoted on it a measuring probe which bears on the rail at a distance of two meters from the nearest point of support and which moves up and down relatively to the points of support as the carriage moves over the irregularities in the rail. As shown, an unloaded measuring device in the form of a chariot 15 on wheels 17 and of very light construction so as not to deform the rail locates the unloaded measuring point 1 and is pushed ahead on the track by a loaded vehicle to which it is coupled by rods 14 connected to the chariot and vehicle by universal joint couplings. The rail is loaded at the two points of contact 2, 3 of the vehicle wheels 8, 8a which carry a first chassis 11 not elastically supported and which itself supports elastically as by rubber pads 12, 12a, a second chassis 13. Since the chariot is not suspended elastically on the track, its upper edge 18 is at a fixed distance from the axis 16 of the wheel 17 and constitutes a secondary measuring basis, on which constantly bears a horizontal lever 19 pivoting at 20 on the chassis 11 so as to remain in the plane of the rail. The movement of the other end 21 relative to the chassis 11 is transmitted through a sheathed wire cable system to an inscribing pen 27 adapted to mark an advancing band 26 driven from the chassis wheels 8, 8a. Fig. 6 shows the type of curve inscribed for a fault when the sleeper is not properly supported, and Fig. 10 that for a deformation fault.
Patent GB-344315-A (GB)
Title: Improvements in and relating to cathode beam oscillographs
IPC: H01J31/12
Filed: 1930-06-23
Abstract: 344,315. Oscillographs. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London.-(Assignees of Ackerman, O.; 470, Ella Street, Wilkinsburg, Pennsylvania, U.S.A.) June 23, 1930, No. 19058. Convention date, June 22, 1929. [Class 37.] In order to excite the timing plates of a cathode beam oscillograph, a condenser is normally maintained charged by a stream of electrons impinging on a target, and is allowed to discharge through a resistance when the electron stream is deflected away from the target. As shown in Fig. 1, an evacuated glass vessel 1 contains a heated cathode 2, an anode 4, deflecting plates 10, a metal screen 8, and a target 7, the anode 4 and screen 8 having central holes in alignment with the cathode and target. The anode 4, screen 8, and one of the plates 10 are connected to earth, the other plate 10 being connected to a point on a series of condensers 13 connected between a hightension line 14 and earth, and forming a potential divider. The target 7 is connected to earth through a resistance 15 across which are connected the electro-static timing plates 16 of the oscillograph. If the capacity of these plates is insufficient, a condenser 17 is connected in parallel therewith. When there is only a normal voltage on the line 14, the beam of electrons is directed on to the target 7, causing a current through the resistance 15 the potential across which maintains the plates 16 and condenser 17 charged. On the occurrence of a surge or unusually high voltage on the line 14, the electron beam is deflected off the target 7 and against the screen 8, thereby interrupting the current through the resistance 15 and allowing the plates 16 and condenser 17 to discharge through the resistance 15 at a known rate, thereby imparting a known timing movement to the electron beam of the cathode ray oscillograph. In a modification the apparatus is combined with a cathode ray oscillograph of the kind described in Specification 295,321, [Class 37, Electricity, Measuring &c.], so that a single cathode beam serves as the oscillograph beam and for initiating the timing movement.
Patent GB-1498257-A (GB)
Title: Charging dc arc furnaces
IPC: F27D3/18
Filed: 1975-05-07
Abstract: 1498257 Charging arc furnaces ASEA AB 7 May 1975 [21 May 1974] 19117/75 Heading F4B [Also in Division H5]  In a D.C. arc furnace of the type having at least one arc electrode 6 and at least one hearth electrode 3, scrap, pellets of other charge materials or reaction agents are fed to the arc at the side of the arc electrode 6 remote from the hearth electrode 3. The material may be delivered through a charging tube 7 in the roof, or through a lance projecting through the furnace wall at the same side of as the hearth electrode, so that material passes below the arc electrode to the arc (Fig. 2).