baber/WOPTO huggingface dataset:
Patent GB-282199-A (GB)
Title: Improvements in or relating to apparatus for delivering liquids in measured quantities by volume
IPC: B67D7/16
Filed: 1926-11-12
Abstract: 282,199. Hayes, H. L. Nov. 12, 1926. Fixed-chamber apparatus with expanding and contracting chambers.- Apparatus for delivering measured quantities of petrol &c. comprises two chambers with a piston (which may be a liquid piston), displaced to discharge the liquid from one chamber by pumping it into the other, a control valve being coupled to the pump spindle by means operated by the rise in pressure in the liquid at the end of the stroke. Figs. 3 and 4 show an apparatus comprising two glass measuring-chambers 20 and a piston 15 oscillating between these. The pump 1 is operated so as to force the piston 15 against one of the volume-adjusting screws 18; the valve, 36 being then in the position shown, the liquid flows through a chamber 9 and passages 21<a>, 20<a> to the right-hand side of the piston, forcing it to the left. At the end of its stroke the pressure in the chamber 9 rises, and is transmitted through a pipe 31<a>, Fig. 3, to a. small chamber 30<a> forcing outwards a piston 32, and causing the gear-wheel 28 to engage with a toothed sector 27 on the pump spindle 26; a small leaf spring 27<a> and a plate 35 prevents this engagement except when the sector 27 is at the end of its stroke. The next movement of the pump then reverses the valve 36, and allows the filled chamber to empty and the empty chamber to fill. At the end of the reversal of the valve 36, the fall of pressure in the chamber 30<a> causes the disengagement of the gears 2'7, 28. A relief valve 38 in a by-pass 37 prevents excess pressure in thepump &c. In a modification, the valve 36 is reversed by ratchet mechanism controlled by means like the piston 32. 'The valve, may be a slide valve.
Patent GB-801351-A (GB)
Title: Improvements in or relating to condenser microphone arrangements
Inventor: CRAGG WILLIAM DONALD
IPC: H04R19/04
Filed: 1953-10-16
Abstract: 801,351. Circuits for electrostatic instruments; condenser microphones. STANDARD TELEPHONES & CABLES, Ltd. Jan. 14, 1955 [Oct. 16, 1953], No. 28606/53. Class 40 (4). In an arrangement for coupling a condenser microphone to an amplifier, of the type in which an oscillator is connected to a discriminator, the output of which feeds the amplifier, the microphone being effectively included in the frequency determining elements of the oscillator, or in those of the discriminator, the oscillator is a crystal triode oscillator. A preferred form of condenser microphone, which forms the subject-matter of the divided Specification 801,352 is also described. Condenser microphone in tuned circuit of oscillator-Fig. 1. The microphone 1 is connected by an impedance step-down transformer 2, coaxial cable 3 and impedance step-up transformer 4 so as to be placed effectively in series with the inductance 6 in the emitter circuit of crystal triode 5. The base resistor 10 carries the emitter and collector currents, and these, being in phase, provide regenerative feedback, so that the circuit oscillates at a frequency determined by the microphone capacitance. Consequently, the output oscillations from the collector of transistor 5 are frequency modulated by the sound waveform received by the microphone. Negative feedback is applied over a feedback loop which includes the microphone, R.F. choke 31, and D.C. blocking condenser 32. The output of the oscillator may be transmitted over a radio link to a frequency modulation receiver or, as shown, may be passed directly to a discriminator 11-17 tuned to the mean frequency of the oscillator. The output from the discriminator is an audio-frequency signal corresponding to that received by the microphone. If the microphone is to be used at a distance from the amplifier, the oscillator and discriminator should be as near to the microphone as possible to reduce the length of cable carrying current at oscillator frequency. Power for the oscillator and discriminator may then be supplied from the amplifier over the screen and one conductor of the screened twin cable used to carry the audio-frequency current, the arrangement being as shown in Fig. 2. Condenser microphone in tuned circuit of discriminator-Fig. 3. The oscillator is stabilized by a piezo-electric crystal 33 and the transformer 4 is connected into the discriminator circuit. The only frequency in the cable 3 will be the oscillator frequency and interference between the cables 3 of different microphones may be eliminated by tuning the oscillators to appropriate widely - spaced frequencies. A balanced bridge form of discriminator is used, the reflected capacity of the microphone being balanced by the condenser 34. Specifications 569,260, 587,990 and 594,077 also are referred to.
Patent GB-463880-A (GB)
Title: Improvements in means for supplying gas for the chlorination or similar treatment of liquids
IPC: C02F1/76
Filed: 1935-10-16
Abstract: 463,880. Chlorinating water. WALLACE & TIERNAN CO., Inc. Oct. 16, 1935, No. 28613. Convention date, Oct. 31, 1934. [Class 46] [Also in Group II] Apparatus for maintaining a constant flow of gas, more particularly chlorine for adding to water, comprises a suction device for inducing the flow of gas from a constant, substantially atmospheric pressure supply, the negative pressure produced by the suction device being determined by the negative head of a column of liquid raised by the suction device, an overflow device being provided the position of which determines the negative head. Chlorine is supplied through a pipe 10, fitted with a ball valve 13, to a bell jar 11 in a tray 14 in which water supplied by a pipe 40 is maintained at a constant level. The main water supply passes through a Venturi 15 connected by a pipe 16 to a chamber 26 connected to a pipe 17 through which the chlorine passes, and to a pipe 25 to which overflow water from the tray is fed by a pipe 35. The U-tube formed by the pipes 25, 35 has a flexible branch 33 fitted with an overflow 30 carried on a quadrant 31, the overflow discharging into a tank 46 in which is a float 45 controlling a valve 43 in the pipe 42, the tank having an overflow 48. In the position of equilibrium the water in chamber 26 is level with the pipe 16 and the negative pressure is determined by the position of the overflow 30. U.S.A. Specifications 1,777,986 and 1,777,987, are referred to.
Patent GB-1169468-A (GB)
Title: Improvements in or relating to Garden Incinerators.
Inventor: SELLER COLIN KEITH
IPC: F23G5/42
Filed: 1967-06-21
Abstract: 1,169,468. Garden incinerators. LATCHFORD WIREWORKS Ltd. 20 June, 1968 [21 June, 1967], No. 28625/67. Heading F4W. A garden incinerator comprises a fire basket 10 formed from wire-mesh side and bottom panels 11, 12, legs 16 for supporting said fire basket, an ash-pan 17 provided with apertures through which the supporting legs pass, and means for supporting said ash-pan in operable position below the fire basket but clear of the ground. As shown, the supporting means for said ash-pan comprise tubular leg components 18 fitted to said ash pan with securing nuts 19 and through which the legs 16 extend. In another embodiment, said supporting means comprise hook-pieces connected to said pan for detachable connection with said fire basket.
Patent GB-1055710-A (GB)
Title: Improvements n or relating to polyhydroxymethylenes
IPC: C08F8/34
Filed: 1965-07-06
Abstract: Polyhydroxmethylenes or macromolecular compounds having a predominantly polyhydroxymethylene structure are solubilized by reacting with carbon disulphide in the presence of aqueous alkali to form the xanthate derivative which is soluble in aqueous alkali.  The polymer may be prepared by saponifying polyvinylene carbonate or a copolymer of vinylene carbonate with vinyl acetate, vinyl ethers, olefins, styrene, acrylic and methacrylic esters and nitriles, vinyl chloride and vinylidene chloride.  The polymer may be recovered by precipitation from the xanthate solution with an acid, e.g. dilute sulphuric acid, and shaped articles such as films, fibres, coatings and foams may be prepared by shaping the xanthate solution prior to precipitation of the polymer. Specified alkalis are sodium, potassium and quaternary ammonium hydroxides, and examples describe the reaction of carbon disulphide with (1-4) saponified polyvinylene carbonate, and (6) a vinyl acetate/ vinylene carbonate copolymer in the presence of potassium hydroxide, and with (5) saponified polyvinylene carbonate in the presence of sodium hydroxide.
Patent GB-758511-A (GB)
Title: Process for the purification of sugar-juices
IPC: C13B20/02
Filed: 1952-11-14
Abstract: In purifying sugar-containing juice the juice is pre-limed in three stages, namely, an acid stage, a neutral stage and an alkaline stage during which alkaline stage, lime and carbon dioxide are introduced to bring the pH up to an optimum value of about 11 and ensure that the concentration of the resulting calcium carbonate increases with rising pH value, and some of the juice is returned from stages of relatively high lime or lime and calcium carbonate concentration to stages of relatively low concentration.  After each introduction of lime or lime and carbon dioxide, the juice may be allowed to stand untouched for a stabilizing period.  The lime may be supplied in the form of limed defecation juice moving in counter-flow to the juice undergoing pre-liming.
Patent GB-1042867-A (GB)
Title: Loom
IPC: D03D47/00
Filed: 1964-07-13
Abstract: 1,042,867. Shuttleless looms. ADOLPH SAURER Ltd. July 13, 1964 [Sept, 12, 1963], No. 28816/64. Heading D1E. A shuttleless loom has a measuring drum 3 which measures weft sufficient for one pick and an arm 2 which moves between the drum 3 and a stationary clamp 4 to lay the weft to be picked across the path of a dummy shuttle 10, the weft being picked alternately from each side of the loom in hair pin form. In operation a length of weft is measured on the drum 3 and the arm swings to grip the weft in the clamp 4, the weft is then picked. A length of weft is then picked from the other side of the loom. The arm 2 swings back from the clamp 4, where the weft is still gripped, to the measuring drum 3 where the second arm of the hairpin is measured then cut and clamped simultaneously. The second leg of the hairpin is then picked and the measuring apparatus is then in the starting position to measure another hairpin of weft.
Patent GB-390233-A (GB)
Title: Improvements in and relating to cases for cigars, cigarettes, toilet articles and the like
IPC: A24F15/12
Filed: 1931-10-16
Abstract: 390,233. Cases for cigarettes &c. TAUNTON, J. B., 28, Craven Street, Strand, London. Oct. 16, 1931, No. 28826. [Class 18.] A case to hold cigarettes, cigars, toilet articles, &c. comprises two parts A moulded from thermoplastic material, e.g. synthetic resin, so as to be identical in form, and each part is provided along one edge with upstanding hinge lugs which mate in the corresponding recesses between the lugs on the other part. The case is held closed by projections I which take into recesses J, and the projections and the recesses may be undercut. A recess may also adjoin a projection, as in Fig. 7. Thumb grips Q for opening the case are provided offset from the centre. The ends of the usual elastic retaining bands L are held in tapered recesses by wedges, pins, or short pieces of wire, and these recesses may be provided adjacent the projections I so that the bands pass over the latter. A cigarette case may hold one or two rows of cigarettes. In a case for toilet articles, the parts A comprise blocks with recesses to take the contents.
Patent GB-265919-A (GB)
Title: Art of vulcanizing rubber
IPC: C08K5/00
Filed: 1926-11-16
Abstract: 265,919. Goodyear Tire & Rubber Co., (Assignees of Teppema, J). Feb. 12, 1926, [Convention date]. Mercaptothiazoles.-5-chlor-2-mercaptobenzthiazole is prepared by bubbling hydrogen sulphide saturated with carbon disulphide through a solution of 1-4-dichlor-2-nitrobenzene containing sodium sulphide saturated with hydrogen sulphide. The corresponding 6-chloro-isomer :- may be prepared by the Sandmeyer Reaction on the diazotized 6-amino-2-mercaptobenzthiazole. The 5-chlor-6-nitro-2-mercaptobenzthiazole and zinc salt thereof is also mentioned. Other derivatives of such halogen-mercaptothiazoles mentioned are the metallic salts, disulphide, tolyl, anisyl and naphthyl derivatives. These products are of use as vulcanizing accelerators.
Patent GB-650368-A (GB)
Title: An improved device for cleaning the pipes and pumps of beer delivery installations
IPC: B67D1/07
Filed: 1948-11-08
Abstract: 650,368. Cleaning pipes. MURLEY, G. C. Nov. 8, 1948, No. 28936. [Class 99(ii)] Apparatus for cleaning beer-delivery pipes &c. comprises a container 5 for the cleaning liquid, which has an inlet pipe 4 for compresssed gas, a regulating valve 7 in the pipe, an outlet pipe 8 which connects the lower part of the container to the pipes to be cleaned and has a non- return valve 9, and a pipe with a regulating valve 10, connecting the pipes 4, 8 so that gas from a bottle 1 may only pass into pipe 4, only direct to the pipes to be cleaned or to both simultaneously according to the setting of the valves. The outlet pipe 8 may be connected to a beer delivery pipe 12 or an adaptor 13 which is connected to a number of beer pipes.
Patent GB-453251-A (GB)
Title: Film stretching device
Filed: 1935-10-21
Abstract: 453,251. Sound - film feeding and guiding devices. HANSEN, S. S., and WENDT, T. M. E., Filmstaden, Rasunda, Sweden. Oct. 21, 1935, No. 29007. Convention date, Oct. 22, 1934. [Class 40 (ii)] [See also Group XX] Relates to a stretching device for films, more particularly sound films, in which the film at both sides of an exposing or reproducing light aperture is subj ected to a tension stress. According to the invention, the stretching members at each side of the aperture are coupled together so as to co-operate for equalizing film tension variations caused by oscillations of the stretching members, an increase or decrease of the tension at one side of the light aperture being countered by an equal increase or decrease respectively of tension on the other side thereof. The film 1 passes in the direction of the arrow 2 over driving rollers 3, 4 and a guiding drum 5 where it is exposed by a beam of light 7 passing through an aperture 6. Between the rollers 3, 4 and drum 5, the film is carried by rollers 8 ... 15, the rollers 8 and 15, which constitute the stretching members according to the invention, being mounted on a movable plate 16. As shown in Fig. 1, this plate is provided with a slot 30 so as to slide on guide pins 31, 32 and is controlled by a spring 33, whilst, as shown in Fig. 2, it is pivoted at one end at 25, controlled at its other end by a spring 26 and cut awav at 28 to enable it to oscillate without touching the roller 14. The plate 16 may also be utilized as a safety member adapted to disengage the motor automatically if the film breaks. To this end, the abutting pin 27 or 31 may be yieldingly mounted and connected to a releasing device for the motor. The Specification as open to inspection under Sect. 91 comprises also a construction in which the plate 16 is provided with an enlarged hole adapted to be engaged by a pin carried by a supporting arm which is pivoted at one end and is held in a central position by springs acting on opposite sides thereof. A further spring connects the plate at the centre of its forward edge with the free end of the supporting arm. This subject-matter does not appear in the Specification as accepted.
Patent GB-1065434-A (GB)
Title: A locomotive adapted to be suspended from an overhead track
IPC: B61C15/04
Filed: 1965-07-08
Abstract: 1,065,434. Suspended vehicles. ANGLOTRANSVAAL CONSOLIDATED INVESTMENT CO. Ltd. July 8, 1965 [July 10, 1964], No. 29033/65. Heading B7L. A locomotive suspended from an overhead track 3, Fig. 3, comprises a rigid frame 2 having two pairs of running wheels 5 engaging the upper surfaces of the lower flanges 6 of an I-beam 4 forming the track and a wheel 16, whose axis is movable relative to the frame 2, to engage the lower surface of the beam, the wheel 16 being driven by a diesel engine 7, Fig. 1 (not shown), via a torque converter 9, coupling 10, reduction gearing 11, shaft 12 with universal joints 13 and a shaft 14, and a support 19, for the wheel 16, pivotal on the frame at 20 between the axes of the wheels 5, 16 and connected at 23 to a draw-bar 24, slidable longitudinally of the frame 2 in guides 25, by a rigid arm 21, whereby the pressure of the wheel 16 on the track 3 will vary automatically with the load connected to the draw-bar. The draw-bar 24 is bifurcated to co-operate with an arm 21 and wheel support 19 at each side of the plane of rotation of the wheel 16, as described with reference to Fig. 2 (not shown).
Patent GB-767002-A (GB)
Title: Air-filter oils
IPC: C10M143/02
Filed: 1952-11-17
Abstract: A thickened oil comprises a hydrocarbon lubricating oil and 0.5 to 30 per cent of a solid polyethylene of molecular weight from 10,000 to 40,000.  The hydrocarbon oil may be a petroleum oil, such as naphthenic, paraffinic and mixed base mineral oils, or an oil derived from coal, or a synthetic oil such as alkyl benzene or alkylene polymers, e.g. polymers of ethylene, propylene, butylene and mixtures.  The products are advantageous for lubricating sealed bearings of electric motors and compressors, and rocker arms of aeroplane motors.  They also find application as greases in port installations, steel rolling mills, water pumps, oil well drilling equipment and mining machinery, and are useful in air filters and cleaners, e.g. in air filters for Diesel engines and in air-conditioning systems.  Reference has been directed by the Comptroller to Specification 710,109.ALSO:A thickened oil comprises a hydrocarbon lubricating oil and 0.5 to 30 per cent of a solid polyethylene of molecular weight from 10,000 to 40,000.  The hydrocarbon oil may be a petroleum oil, such as naphthenic, paraffinic and mixed base mineral oils, or an oil derived from coal, or a synthetic oil such as alkyl benzene or alkylene polymers (e.g. polymers of ethylene, propylene, butylene and mixtures).  Optional additives such as oxidation and rust inhibitors, extreme pressure, anti-foaming, anti-wear and dispersing agents, other thickening agents and viscosity index improvers, may be added.  The products are more resistant to oxidation than metallic soap thickened greases and consequently are advantageous for lubricating sealed bearings of electric motors and compressors, and rocker arms of airplane motors. Further, owing to their resistance to emulsification, they find application as greases in port installations, steel rolling mills, water pumps, oil well drilling equipment and mining machinery.  The products are also useful for air filters and cleaners, e.g. in air filters for diesel engines and in air conditioning systems. Reference has been directed by the Comptroller to Specification 710,109.
Patent GB-673880-A (GB)
Title: Improvements in or relating to multiple stage condensers
IPC: F28B3/00
Filed: 1949-11-14
Abstract: 673,880. Injectors. GUARDITE CORPORATION. Nov. 14, 1949 [March 23, 1949], No. 29073/49. Class 71 A three stage gas evacuation system comprises at least two condenser chambers 15, 25 connected to the first stage 11 and to the second and third stages 21, 31 respectively, a single source of condensing liquid having an inlet 13 into the first chamber 15 and an outlet 38 from the last chamber, e.g., a third chamber 35, drain means 17 for said liquid passing directly from the first condenser to the second condenser chamber, and means, e.g., plates 14, 16 and overflow ports 23, 32 in each chamber for securing contact between said liquid and a gas passing through said chamber. In operation gas is evacuated from a vessel 10 by steam supplied to each of the three ejectors 11, 21, 31 arranged with their induced fluid passages in series; uncondensed gas being discharged through an outlet 37. The cooling liquid is transferred from the second chamber 25 to the third chamber 35 by a pump 28 and a duct 29.
Patent GB-739811-A (GB)
Title: Improvements in or relating to lathe control mechanisms
IPC: B23Q1/00
Filed: 1952-11-18
Abstract: 739,811. Lathe details. BOEHRINGER GES., GEB. Nov. 18, 1952 [Nov. 20, 1951], No. 29159/52. Addition to 739,804. Drawings to Specification. Class 83 (3). Control mechanism according to the parent Specification, in which the work spindle and/or the feed transmission is driven at a selected speed or speeds determined by a number of pre-settable devices and a manually-operable selector, is augmented by a second manuallyoperable selector on the tool-supporting slide and operable independently of the first mentioned selector to inactivate the devices and to determine the speed ratio of the spindle or feed transmission, irrespective of the setting of the devices, until the latter are activated again.
Patent GB-878131-A (GB)
Title: Fluorinated cyclohexadienes
Inventor: BANKS RONALD ERIC
IPC: C07C17/00
Filed: 1958-09-11
Abstract: Polyfluorocyclohexa-1 : 3- or -1 : 4 - dienes containing not more than one hydrogen atom per molecule are prepared from the corresponding diene isomer by heating it in inert atmosphere to a temperature between 100 DEG C. and 700 DEG C.  The compound as a gas is passed through inert tubes such as 'aged' nickel or copper, carbon silica or noble metal preferably at a temperature within the range 200 DEG C. to 600 DEG C., and the products are separated e.g. by gas chromatographic methods.  Examples describe the preparation of octafluorocyclohexa-1 : 3-diene and -1 : 4 diene from their respective isomers and 1H-heptafluorocyclohexa-1 : 4 diene from the -1 : 3 diene.
Patent GB-889506-A (GB)
Title: An improved gear hobbing machine
Inventor: TRAPP CHARLES CARL
IPC: B23F5/22
Filed: 1957-09-17
Abstract: 889,506. Gear-cutting. ERICSSON TELEPHONES Ltd. Sept. 12, 1958 [Sept. 17, 1957], No. 29183/57. Class 83 (3). A gear hobbing machine comprises transversely mounted cutter- and work-spindles 10, 11 and fluid-pressure means for producing the traverse and feed movements. The work 12, Fig. 2, is fed by rotating, at different speeds, a gear 14 splined to the shaft 10 and a gear 24 screw-threaded thereon. The gears 14, 24 are rotated at the same speed by worms 15, 23, the latter being mounted in a carriage 22 which can be moved by fluid-pressure means to give additional motion to the gear 24. The cutter is raised into the work to cutting depth, determined by a stop-screw 52, Fig. 4, by fluid pressure means 33a connected to an angularly adjustable bracket 21 by way of a lever 34 and a cam 35. The work is clamped by a fluid-pressure-operated pad 38 and a pad 39. Burrs are removed by an additional tool. The fluid-pressure means are supplied with fluid by hydraulic devices operated by pneumatically controlled means, flow valves being provided to determine the feeding speeds. Three such hobbing machines may be combined side by side in one machine and supplied automatically with workpieces. The Provisional Specification describes a machine in which the shaft 10 is fed directly by fluid-pressure means.
Patent GB-996457-A (GB)
Title: Apparatus for and method of building tires
IPC: B29D30/26
Filed: 1962-07-31
Abstract: 996,457. Trimming moulded articles.UNITED STATES RUBBER CO. July 31, 1962 [Oct. 9, 1961], No. 29297/62. Heading B5A. [Also in Division B7] In applying a liner to a tyre carcass, the liner 11 is mounted on a bladder 30 which expands to force it against the inside of the carcass, excess liner being trimmed off by a heated ring 48. The bladder forces the liner 11 against the ring (Fig. 6), heated by a heater 50, and into circumferential grooves 51, to which the excess liner adheres when the ring is withdrawn (Fig. 10).