baber/WOPTO huggingface dataset:
Patent GB-511793-A (GB)
Title: Improvements in and relating to time checking recording apparatus for use with receptacles or tokens
IPC: G07C1/32
Filed: 1938-02-23
Abstract: 511,793. Time-recording apparatus. DAVIES, B., and BROOKES, J. Feb. 23. 1938, No. 5763. [Class 106 (iv)] The apparatus comprising a casing containing a device to record the time at which each of a series of bags, &c., is attached and locked to the casing, means also being provided to register the number of times the casing lid is opened and thus to reveal unauthorised opening. The bags 4, Fig. 7, have mouth plates 16 which are closed together and inserted in a recess 12, Fig. 4, in the casing. A bolt 8 is then advanced to pass through apertures 15 in the plates 16 and thus to lock the bag to the casing. The bolt 8 is moved by a handwheel 19 on a screw shaft 17 engaging a nut 20 secured to the bolt. A pawl 22 is pivoted to the nut 20 and engages a rack bar 23. The pawl can be lifted by a finger 24 when the lid 2 of the casing is removed. The shaft 17 is geared to a shaft 45, Fig. 6, carrying a cam 44 which rocks a lever 39 to press a pin 36 through a clock-driven record disc 35, Fig. 8. The disc is mounted on a table 34 pressed by a spring 33b into contact with a cap 60 frictionally connected to a clock-driven shaft 33a. Pins 34a pass through. the disc into the cap. Each time the lid 2 is removed a spring, rocks an arm 29, Fig. 4, to advance a counter 28.
Patent GB-288418-A (GB)
Title: Single pulley block
IPC: B66D3/10
Filed: 1927-03-02
Abstract: 288,418. Standaloft, J. H. March 2, 1927. Self-sustaining gear. -Comprises a combination and arrangement of parts forming a single-sheave selfsustaining pulley-block. Ratchet teeth 7<a>, formed integral with the sheave and located in a recess on one side thereof, are engaged by a pawl 8 mounted on the framing and influenced by two springs, one of which 10 acts on the nose and the other 9 on the tail-piece of the pawl as shown, while the periphery of the sheave is furnished with a V-shaped groove adapted to grip and hold the haulage rope when released by the operator.
Patent GB-525484-A (GB)
Title: Improvements in the treatment of artificial filaments, threads, yarns and like materials
IPC: D01F2/28
Filed: 1939-02-22
Abstract: 525,484. Artificial silk &c. DREYFUS, H. Feb. 22, 1939, No. 5865. [Class 2 (ii)] The extensibility of artificial filaments, threads, yarns, and like materials containing organic derivatives of cellulose is increased by subjecting them at a temperature below 40‹C., in the absence of tension sufficient to stretch them, to treatment with an aqueous emulsion of a shrinking agent which is an organic solvent, latent solvent, or swelling agent. Preferably the materials are allowed to shrink during or subsequently to the application of the aqueous emulsions. Materials which have been stretched after formation or which have been produced by a wet spinning process may be subjected to the treatment. The emulsions may be prepared with the aid of soaps such as alkali metal and ammonium soaps, ethanolamine and other organic soaps e.g. soaps of saturated higher fatty acids, sulphonated fatty alcohols, alkylated naphthalene sulphonic acids, and the Twitchell type of fat splitting agent obtained e.g. by sulphonation of a mixture of naphthalene and castor oil. The emulsions may be stabilized by protective colloids e.g. water-soluble methyl cellulose. The disperse phase may consist only of the solvent or swelling agent or it may contain also a diluent e.g. benzene, xylene, benzine, petrol ether, kerosene, carbon tetrachloride, trichlorethylene, or perchlorethylene. The treatment may be effected at room or elevated temperature or pressure. Hanks may be dipped in the emulsion, or hanks or travelling materials may be sprayed. The treatment liquid may be removed by washing. the materials with an aqueous solution of an emulsifying agent. The process is applicable to cellulose acetate or other ester or mixed ester or ethyl, benzyl or other cellulose ether materials. Methylene chloride, ethylene chloride, and chloroform are among the specified latent solvents. In an example, a cellulose acetate yarn which has been stretched in wet steam is immersed in hank form in a medium containing methylene chloride and high boiling petroleum dispersed in water with the aid of ammonium stearate. Specifications 177,868,179,234,323,790, 336,217, [all in Class 2 (ii)], 340,324, 340,325, 340,326, 340,436, 340,437, 370,430, 378,074, 378,858, 389,823, 438,584, 438,585, 438,586, 438,587, 438,655 and 438,656 are referred to.
Patent GB-911837-A (GB)
Title: Improvements in or relating to the dehydration of aluminium fluoride hydrates
IPC: C01F7/50
Filed: 1961-02-17
Abstract: Aluminium fluoride hydrates are dehydrated by heating within a very short time, i.e. at the most 5 seconds, to the temperature required for the desired degree of dehydration.  Preferably the rapid heating is effected by introducing the crude material, the granular size preferably not exceeding 0,5 mm. at the required dehydration temperature into an upwardly flowing current of gas. A fluidized bed may be used which consists of anhydrous aluminium fluoride of a granular size not exceeding 0,5 mm. and which is maintained by blowing in air from below; the hydrate is continuously introduced and is discharged at some other point by natural overflow of the fluidized bed.  The fluidized bed may be heated directly by heating the current of gas or air, or preferably indirectly by externally heating the container for the fluidized bed.  Instead of using fluidized bed calcination, the material to be calcined may be sluiced into a current of air or gas circulating in a tube system, which is preferably heated externally, wherein it is dehydrated and separated in the form of an anhydrous product by means of a cyclone. Calcination may also be carried out in rotating horizontal containers which are adapted to provide the required rapid heating of the hydrate.  When the water-content of an aluminium fluoride hydrate is high, it may be advantageous to effect the dehydration in stages.  In Example 1, aluminium fluoride trihydrate at a temperature of about 20 DEG C. is continuously introduced for 1 hour into an externally heated fluidized bed into which air is supplied from below; the temperature is 590 DEG C.  The product, which is withdrawn by means of an overflow, contains 0,2% water, and 67,5% fluorine corresponding to an aluminium fluoride content of 99,6%.  The product is dehydrated in one second and the average period that the product remains in the bed is 20 to 30 minutes.  In Example 2, the water of crystallization is removed in stages from the trihydrate.  Two fluidized beds are used, one is kept at 200 DEG  to 220 DEG C. and the other at 580 DEG to 600 DEG C., the two beds being connected by an overflow.  The product overflowing from stage 1 to stage 2 contained 10,4% water, whilst the end product contained 0,3% water and 99% aluminium fluoride.  In each stage the product is dehydrated within one second and left in the bed for 20 minutes.
Patent GB-374015-A (GB)
Title: Improvements in or relating to picture telegraph systems and apparatus for use therein
IPC: H04N3/12
Filed: 1931-02-25
Abstract: 374,015. Television. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin.-(Assignees of Bronk, O. von ; 17, Schopenhauerstrasse, Schm÷ckwitz, Berlin.) Feb. 25, 1931, No. 5947. Convention date, March 15, 1930. [Classes 39 (i) and 40 (iii).] In a television receiver, a cathode ray tube 1, Fig. 1, has a control grid 10, comprising interlacing electrodes G, Fig. 2, arranged in the path of the cathode rays, the electrodes being electrically controlled in time sequence. The cathode may be preferably restricted to a transverse line by apertured plates 3, 4 and is traversed over the fluorescent screen 7 by condenser plates 8, 9. One electrode G is charged, e.g. positively and the other electrodes Glare charged negatively, so that normally no cathode rays reach the screen 7. By bringing each electrode G1 in turn to the potential of the electrode G, sections of the line of cathode rays pass to the screen. Alternating current potentials are supplied to the wire A, the impedances a .. f, e.g. silite resistances, causing the sequential activation of the electrodes G1. The cathode ray is modulated in intensity by supplying the picture signals to condenser plates 5, 6, allowing more or less of the beam to pass through the apertured plate 4. Grids may replace the electrodes G., G1, Fig. 3 (not shown). In a modification, a cathode ray tube 1, Fig. 4, produces two " line " beams of cathode rays intersecting as in a cross, their strengths being such that only the point of intersection on the fluorescent screen 7 is luminous. Condenser plates 5, 5<1>, 61 modulate the beams and condenser plates 8, 8<1>,9<1> traverse each beam over the screen so that the point of intersection scans the screen. An auxiliary grid 10<1> may have potentials applied to it for adjusting the brightness of the scanning spot. According to the Specification as open to inspection under Sect. 91 (3) (a), the control grid 10, Fig. 1, may be replaced by a rotating radially slotted disc. This subject-matter does not appear in the Specification as accepted.
Patent GB-1385155-A (GB)
Title: Piezoelectric lighters
IPC: F23Q3/00
Filed: 1973-02-07
Abstract: 1385155 Piezoelectric igniters CONSTRUCTIONS ELECTRIQUES RV 7 Feb 1973 [31 May 1972] 5959/73 Heading F4F [Also in Division H2] Ignition apparatus comprises a piezoelectric unit 1 and a hammer 17 controlled by a push-rod 15 and spring 18 and held in inoperative position by a pin 19 acted on by a blade spring 21. The pin 19 is lifted from the hammer by means of ramps 22 formed on the push-rod, the hammer on release moving under the action of spring 18 to strike striker 7, 8 of the unit 1. The unit 1 comprises two crystals 3 between which is located a tongue 4 through which the voltage produced on impact is transmitted to an ignition electrode. The push-rod 15 is returned to its initial position by spring 16.
Patent GB-654419-A (GB)
Title: Improvements in or relating to a triode oscillator tripler circuit
IPC: H03B5/18
Filed: 1948-02-27
Abstract: 654,419. Valve generating circuits. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 5976. Convention date, Dec. 10, 1945. [Class 40 (vi)] [Also in Group XL (b)] A triode oscillator tripler circuit comprises two adjustable coaxial lines of different radial dimensions connected in series and adjusted such that together with the reactance connected across the input terminal of the first line the two lines are resonant at a first frequency and at the third harmonic of that frequency. A grounded-grid valve has a coaxial resonant line 21 tuned to the oscillation frequency connected to the grid and coupled to the cathode 11 through capacitance 43 and an anode tuned circuit comprising a coaxial line 30, 35 followed by a second line 30, 31 having a larger central conductor. Conductor 31 slides along conductor 30 and is connected to it at one end by contacts 32, the other end being connected to the outer conductor 35 by a capacitive shorting disc 15, 16. The inner conductors are held in position by insulating discs 17 and 33. In operation the lengths of the two sections of line are adjusted such that the lines resonate with the valve anode impedance at the oscillation frequency and the third harmonic, and to make this possible the impedance of the lines viewed from the valve at the oscillation frequency must be three times its value at the harmonic frequency. Positive feed-back to ensure oscillation is provided by probes 41 and the output is taken from a probe 46 located at a quarter wavelength at the harmonic frequency from the end of the line.
Patent GB-725964-A (GB)
Title: Improvements in or relating to mining machine heads
IPC: E21C25/58
Filed: 1953-03-20
Abstract: 725,964. Mineralmining machines  COMPTON, C. E March 4, 1953, No 5997/53. Addition t( 675,440. Class 68(1) A mining machine head, of the type des cribed in the parent Specification with the modification that on the breaker 6 are non- spiral ribs 5.
Patent GB-546773-A (GB)
Title: Improvements in electric transformers
IPC: H01F38/10
Filed: 1941-05-09
Abstract: 546,773. Transformers. BRITISH THOMSONHOUSTON CO., Ltd. May 9, 1941, No. 6018. Convention date, May 10, 1940. [Class 38 (ii)] In a transformer for supplying discharge tubes 26 and comprising a secondary winding in two series-connected parts 13, 14 earthed at the point of interconnection and located on opposite sides of the primary 12 with magnetic shunts 17, 18 interposed, any tendency to unbalance in the voltage distribution between the secondary winding parts (due e.g. to inequality in the capacity to earth of the leads connecting the transformer to its load) is compensated by linking a winding or conductive element with the magnetic circuits of the two secondary winding parts. The compensating winding may comprise coils 31, 32 arranged on the magnetic shunts 17, 18 or on the end yokes of the core, or it may be in the form of a slotted plate encircling the two magnetic shunts.
Patent GB-452589-A (GB)
Title: Improvements in cathode ray tubes
IPC: H01J29/62
Filed: 1935-02-25
Abstract: 452,589. Cathode-ray tubes. NICOLL, F. H., 17, The Drive, Ickenham, and ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, both in Middlesex. Feb. 25, 1935, No. 6037. Addition to 431,327. [Class 39 (i)] At least one of the decelerators 2, Fig. 1, or a cathode shield electrode, of the tube described in the parent Specification comprises an apertured diaphragm, the surface of which facing the screen is of dished, frusto-conical, hemispherical or parabolic shape to focus the beam on to the aperture in the adjacent diaphragm. The diaphragm may be shaped in such manner that portions thereof around the aperture are normal to the ray and portions farther from the aperture are at progressively decreasing angles to the ray. The tube comprises a cathode 5, shield 4, accelerator 1, decelerator 2, to which the modulating potentials are applied, and anodes 3, 8 in the form of tubular electrodes provided with apertured diaphragms. The anode 8 may consist of a silver coating on the envelope and, with the anode 3, focuses the beam onto the screen. The diaphragm of the decelerator 2 is arranged on the cathode side of the centre line, and the anode 3 is provided with a second diaphragm 10, the aperture in which is larger than that in the first diaphragm 9. Further decelerators, which may have a dished shape, and accelerators may be provided. In another form, the diaphragm may comprise flat plates 11, Fig. 3, which have coaxial apertures of progressively varying diameters. Specification 447,493 is referred to.
Patent GB-371099-A (GB)
Title: Improvements in and relating to screening of valves and the like of wireless apparatus
IPC: H01J5/12
Filed: 1931-02-26
Abstract: 371,099. Wireless receiving apparatus. PRICE, A. A. and RICHARDSON, A. J., 9, Southampton Street, High Holborn, London. Feb. 26, 1931, No. 6040. [Classes 39 (i) and 40 (v).] A tubular metal screen 2 for valves in radio apparatus engages and is supported by a collar 1, of insulating material such as rubber or ebonite which does not project below the base of the valve holder thereby minimizing risk of short-circuits due to the screen touching valve connections. The collar is made with a recessed or cone-shaped edge which is firmly gripped by the screen. An earthing strip 3 is clamped between the screen and collar when the screen is fitted, and may be connected to a filament pin of the valve.
Patent GB-339271-A (GB)
Title: Manufacture of homogeneous masses and solutions applicable as lacquers
IPC: C08L35/02
Filed: 1929-09-03
Abstract: 339,271. Groves, W. W., (I. G. Farbenindustrie Akt.-Ges.). Sept. 3, 1929. Divided on 318,549, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 6, 1929. Lacquers.-Homogeneous artificial resins are prepared by mixing in solution or otherwise a polymerization product of a vinyl ester with the condensation product of a phenol derivative and an aldehyde or an agent yielding an aldehyde. Solutions of the mixtures may be used as lacquers either alone or mixed with nitrocellulose. Example, 60 parts of polyvinyl chloride are dissolved in a mixture of 160 parts of acetone and 240 parts benzene, and 150 parts of a resin from anisole and formaldehyde are separately dissolved in 350 parts of benzene. On mixing the two solutions, a lacquer solution is obtained. Specification 298,085, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-590216-A (GB)
Title: Improvements in and relating to apparatus for treating coated metal strip
Filed: 1944-04-03
Abstract: 590,216. Coating metals ; tinning. DAVY & UNITED ENGINEERING CO., Ltd. (United Engineering & Foundry Co.). April 3, 1944, No. 6164. [Class 82 (ii)] [Also in Group XXXVI] In apparatus for treating coated metal strips to melt the coating and then cool and harden it the coated strip 4 passes through an opening 4 in the wide upper end of a tank 1 over a roller 2 and down through a heating liquid, e.g. oil contained in a part of the tank formed by the upper part of a partition 11, preferably thermally insulated and a floor member 19, the liquid being heated by steam passed through coils 22, 23.. The strip with the coating melted passes through a slot 20 in the member 19 into a body of cooling liquid contained in the tank below the member 19 and on the other side of the partition 11. The liquid is cooled by cold water passing through coils 24, 25 and the length of the heating zone may be varied by placing the member 19 on one of a series of brackets 27 on the inner side of one wall of the tank and on the partition 11. The strip then passes round a roller 7 which is adjustable vertically by journalling in bearings 12 carried by the lower end of a plate 13 sliding in channel members 14 and carried by a rod 16, the screw and upper end of which passes through cross members 17 having a hand wheel 18 rotatably mounted between them. The strip 4 then passes up through the liquid in th e tank 1, over the roller 3 and out through the opening 6, a roller 28 removing as much liquid as possible from the strip.
Patent GB-860551-A (GB)
Title: Improvements in or relating to electron discharge devices
Inventor: MCGEE JAMES DWYER
IPC: H01J31/50
Filed: 1958-02-26
Abstract: 860,551. Discharge apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 18, 1959 [Feb. 26, 1958], No. 6171/58. Class 39(1). A discharge device, e.g. a photoelectrode tube, comprises a vessel having at least first and second chambers, the first chamber having an aperture opening into the second chamber and the two chambers also being connected by way of a tortuous passage, and an electrode, a surface of which is coated by the condensation thereon of vapour admitted to the second chamber, and which is adapted to seal the aperture between the two chambers during the coating operation. Since the chambers are also connected by way of the tortuous passage, the vessel may be evacuated through a single exhaust tube instead of through separate exhaust tubes as was necessary in the device described in Specification 809,607. As shown, the vessel 1 comprises 3 chambers 2, 3, 4, each adjacent pair being connected by way of an apertured flange 6 and a tortuous passage 8 provided by a tube of zig-zag, twisted or curved form. Electrodes 7, 10, which may comprise antimony-coated glass plates, are arranged for sensitization with calcium vapour which is introduced into chambers 2, 4. The internal surfaces of the tubes 8 may be coated with a substance having a strong chemical affinity for alkaline metal atoms, e.g. metallic antimony or tin, tin oxide or a colloidal graphite dispersion, to prevent caesium vapour from passing through the tubes into chamber 3. The photo-sensitive electrodes 7, 10, one of which may be turned to face into chamber 3, may form two electrodes of a multiple-stage tube in which conversion of a visual image into an electron image occurs more than once, the remaining electrodes being contained in the chamber 3 and thus prevented from being contaminated with caesium vapour during the coating operation.
Patent GB-331526-A (GB)
Title: Improvement in process of fractionally condensing petroleum vapors and other vapor compounds
IPC: F01D1/02
Filed: 1929-02-25
Abstract: 331,526. Losey, A., Gottlieb, P., and Haupt, L. L. Oct. 10, 1928, [Convention date]. Vapour engines.-Vapours, such as those produced by distilling petroleum, oil shale, coal, wood, tar, and re-run condensates thereof, are fractionally condensed by passing them into a heat engine 8 where work is performed and the temperature lowered so that fuel oil condenses out in a chamber 10, the work being utilized in an electricity generator 9. This process is repeated to give lubricating stock in a chamber 16 and wax slop in a chamber 22, the chambers 16, 22 being both connected through cocks 59, 58 with a pipe 60, so that engine 20 and chamber 22 may be cut out. From the pipe 60 the vapours may pass directly by a pipe 70 to a turbine 46, or alternatively through an engine 26 and a chamber 28 through a pipe 72 which is connected directly to the turbine 46 and also indirectly by a pipe 31 through a turbine 33, a chamber 34, a turbine 39, and a second chamber 41. Wax distillate separates in chamber 28, gas oil in chamber 34, kerosene in chamber 41, and gasolene in condenser 48. The, gasolene and vapours are passed by a pump 52 to a chamber 54 whence liquid is taken off at 55 and vapour at 56. When an increased proportion of wax distillate is desired cocks 57, 58 are closed and cock 59 opened. When an increased yield of gasolene is desired cocks 61, 62 are closed and cock 63 opened. When crude petroleum is to be run to pitch, fuel oil, lubricating stock and distillate, pitch collects in a separator 67 and vapours pass directly from chamber 16 to turbine 46.
Patent GB-525653-A (GB)
Title: Improvements in or relating to electric welding apparatus
IPC: B23K11/11
Filed: 1939-02-24
Abstract: 525,653. Welding. TENNANT, W. J. (American Coach & Body Co.). Feb. 24, 1939, No. 6219. [Class 83 (iv)] [Also in Group XXXV] In electric welding apparatus comprising a transformer 10, Fig. 1, and electrodes 16 with flexible cables 15, cooling fluid is supplied to the transformer and to the electrodes. The transformer comprises a 3-limbed shell-type core on which is mounted a secondary consisting of two single loops 29, 30, Fig. 5, interleaved between three primary winding elements 26, 27, 28, Fig. 7. These loops are hollow and have cooling fluid supplied to them from a supply 53, Fig. 4, through pipes 57, 58, the return being into a pipe 54. The loops are provided with connectors 68 to which the flexible cables 15 attach. Cooling fluid is supplied to the electrodes 16 from the supply 53 through pipes 56 and returns through the cables 15 which are hollow. A switch 42 is provided which permits the winding elements 26, 27, 28 to be selectively connected in circuit.