baber/WOPTO huggingface dataset:
Patent GB-581451-A (GB)
Title: Electron discharge devices
IPC: H01J25/50
Filed: 1944-06-05
Abstract: 581,451. Magnetrons; wave guides. STANDARD TELEPHONES & CABLES, Ltd. June 5, 1944, No. 10823. Convention date, March 26, 1943. [Classes 39 (i) and 40 (v)] A magnetron comprises a metal pipe 10, preferably of square bore, sealed at the ends 32, 32<1> and provided with a transverse opening 13 through which extends the cathode 12 ; magnet poles 24, 24<1> are positioned on either side of the opening 13. The ends of the transverse opening are sealed by members each comprising an apertured copper cup 14 applied to a reduced part 11 of the pipe of square external section, a second copper cup 16 nested within the first, supporting the cathode and connected to one of its leads and an annular glass seal 18 joining the two cups. The external cathode leads 22, 22<1> pass through the magnet poles. The cathode comprises a cylinder 12 coated with emissive material such as barium or strontium carbonate and is heated by a spiral element 26. Alternatively the cathode may consist of a helical coil wound on supports and enclosing a heating element ; in this form the cathode is supported by one of the inner cups and the heater by the other, the appropriate connections passing through the corresponding magnet poles. The pipe 10 is connected as anode and is provided with cooling fins 30. The magnetron may be coupled to a pipe 40 by means consisting of a hollow sleeve 34 tlirough an opening in the cap 32<1> through which extends a loop 38, supported by a glass bead 36. Alternatively the coupling may be by means of a slotted metal disc with a mica disc placed over it and sealed beneath the cap. Another form has a second slotted disc aligned with the first, placed over the mica disc, the whole being sealed beneath the cap. In the coupling shown in Fig. 8, the output end, 492 of the pipe 10, is of reduced section and is terminated by a cap 494 having a narrow slot 496 and enclosed by a glass cup 502 sealed to a copper sleeve 500 secured to the pipe. The device 440 to which coupling is made is screwed to a flange 490 on the pipe.
Patent GB-966927-A (GB)
Title: A rail spike
Inventor: DAVIES GEOFFREY PETER
IPC: E01B9/08
Filed: 1962-03-21
Abstract: 966,927. Spikes. ELASTIC RAIL SPIKE CO. Ltd. March 21, 1963 [March 21, 1962], No. 10918/62. Addition to 931,475. Heading F2H. A rail spike similar to that described in the parent Specification is not formed from a single folded bar but consists of two bars WX and YZ and the bars may have an intervening space in the curved portions as described in Specification 966,926. The bars may be temporarily bound together by wire or steel, fabric or synthetic resin tape 15 with or without adhesive on one face of the tape. They may be separated for driving into the hole in the sleeper or the binding may be left to break or deteriorate. The bars may be permanently joined by welding at one or more points, e.g. where the straight and the curved portions meet, or by binding with galvanized steel tapes. The spike head may be set to one side, Figs. 4-6 (not shown), as in the parent Specification. The uppermost bar WX may be the longer with its end W turned up to meet the end Y of the other bar. If the lowermost bar is the longer, its end Z is bent back around the end X of the other bar, Fig. 8 (not shown).
Patent GB-591195-A (GB)
Title: Improvements in or relating to holders for cigarettes
IPC: A44C9/00
Filed: 1945-05-02
Abstract: 591,195. Cigarette holders WOODBRIDGE, A. T. May 2, 1945, No. 11061. [Class 130] A holder for cigarettes comprises a finger-ring a connected at right angles to which is a cigarette holding ring b around which jewels c may be set, the connection being by means of an ornamental piece d which may if desired permit of adjustment of ring b relative to ring a.
Patent GB-346566-A (GB)
Title: An improved viewing device for stereoscopic kinematography
IPC: G03B35/16
Filed: 1930-04-09
Abstract: 346,566. Stereoscopic kinematography. CAIRNS, A., 67, Easton Road, New Ferry, Birkenhead. April 9, 1930, No. 11222. [Class 97 (i).] Means for al. ternately covering the right eye and left eye of a person viewing alternately projected stereoscopic pairs of images comprises a shutter operated electrostatically and without external connections. As shown, the shutter comprises arms r, r<1>, and is pivoted on a spectacle frame of insulating material provided with vulcanite filling pieces p, p<1> having viewing slits or holes o, o<1>. The shutter rests under gravity with the arm r in contact with a metal bar b. When placed in an electric field, the bar b and the shutter become similarly charged, and the shutter is repelled by the bar to cover the hole o and uncover the hole o<1>, its movement being limited by a stop m. An intermittent field of suitable frequency may be produced in a theatre by connecting insulated overhead wires to a source of high-tension unidirectional intermittent current. The apparatus may be enclosed in an air-exhausted container from which only the end of the bar projects. According to the Provisional Specification, the spectators may be located on an insulated floor which is intermittently charged.
Patent GB-548719-A (GB)
Title: Improvements in or relating to machines for making netting
IPC: D04G1/00
Filed: 1941-09-03
Abstract: 548,719. Net-making machines. PORTER SPIERS (LEICESTER), Ltd., and PORTER, D. Sept. 3, 1941, No. 11278. [Class 74 (i)] The draw-off rollers 3, 4, 5 of a machine for making netting are provided with driving means at both ends of the rollers so that they are driven with uniform torque and without tendency to run askew. The driving means at each end may comprise chain gear 29, 30 for the front and rear rollers 5, 3, and in this case the middle roller is not positively driven. Alternatively all of the draw-off rollers may be geared together at both sides of the assembly by spur, mangle or like toothed gears. The rollers 3, 4, 5 may be mounted in anti-friction bearings in blocks, two of which 8, 9 are slidably mounted in brackets so that the rear and middle rollers can be moved to regulate the pressure exerted between the rollers. The rollers may be covered with felt or indiarubber.
Patent GB-313692-A (GB)
Title: Improvements in illuminating daylight signs and the like
IPC: G09F13/14
Filed: 1928-04-17
Abstract: 313,692. Lytton, E. April 17, 1928. Radial elements, oscillating; actuating. -A sign, which may be of the type in which light is reflected on to the back of a facia by means of an inclined mirror, is provided with a number of coloured transparencies, located behind the facia, and pivoted so as to rotate about a vertical axis through 90‹. The transparencies are turned simultaneously from effective to non-effective position, and vice versa, by a solenoid m or by inertia through oscillation of a carrying vehicle. The solenoid core l is connected by a cord k to a rack engaging pinions h on the spindles g carrying the transparencies, an adjustable switch o cutting off the current after each actuation and a spring p returning the rack. Two differently coloured transparencies may be arranged between each pair of letters of the facia legend. The mirror d is rotatable by an external thumb piece to bring it into position for reflecting light from lamps s by night. Contacts t on the piece control current to the lamps s. Pairs of reflectors u, v are placed behind the lamps.
Patent GB-720120-A (GB)
Title: Process for the polycondensation of terephthalic acid diglycol ester
IPC: C08G63/81
Filed: 1952-05-05
Abstract: Polyethylene terephthalate is made by condensing terephthalic acid diglycol ester in presence of an organic solvent capable of dissolving both the monomeric ester and its polycondensates and which contains a naphthalene nucleus or two benzene nuclei linked either directly or through an -O-, -CO- or -(CH2)nbridge (n = 1-4) and which may be wholly or partly hydrogenated and/or substituted by one or more CH3-, CH3O-, C2H5-, C2H5O, C3H7- or C3H7O- groups.  The solvent must contain no -OH, -NH2, -NO, -CN or -COOH groups. The chain length of the condensate may be controlled by adding a monocarboxylic acid or an ester thereof.  Catalysts for the reaction are oxides, sulphates, acetates and alcoholates of the third and fourth group or the sub-group of the second main group of the periodic system, or salts of these elements with high molecular weight aliphatic or aromatic mono-carboxylic acids.  In examples (1) a mixture of crude terephthalic acid diglycol ester, diphenyl and zinc oxide is heated in a flask in a current of nitrogen and an azeotropic mixture of glycol and diphenyl is distilled off from the head of a column attached to the flask. When the distillation temperature reaches that of the pure solvent, the rate of distillation is reduced and the concentration of the solution is maintained constant by adding diphenyl to the reaction flask.  After 10-14 hours in all, the reaction mixture is cooled and the polyethylene terephthalate separates as a gel-like cake which is comminuted and filtered.  The product is then washed to remove included diphenyl with a low-boiling solvent (e.g. acetone, carbon tetrachloride or benzene).  (2) Uses diphenyl ether as solvent and colloidal silica as catalyst.  (3) Uses a mixture of diphenyl and diphenyl ether as solvent and titanium dioxide as catalyst.  (4) Condensation is performed in presence of benzoic acid with alpha-methyl naphthalene as solvent and colloidal silica as catalyst. (5) A mixture of terephthalic acid diglycol ester, a -methyl naphthalene and boron trioxide is heated.  Both a -methylnaphthalene and its azeotropic mixture with glycol distil off and are condensed and led through a receiver filled with silica gel to adsorp the glycol.  The a -methylnaphthalene is returned to the reaction flask. After 12-14 hours the polycondensate is isolated as in (1).  (6) Similar to (5) but uses diphenyl methane as solvent and lead oxide as catalyst.  Specification 578,079 is referred to.
Patent GB-248956-A (GB)
Title: Improvements in or relating to cathodes for electric discharge devices
IPC: H01J1/14
Filed: 1925-05-01
Abstract: 248,956. General Electric Co., Ltd., and Thompson, M. May 1, 1925. Vacuum tubes.-A thermionic cathode is made from an alloy or mixture consisting mainly of tungsten and molybdenum, with a small amount of thorium. The proportion of each of the latter constituents may be from ¢ to 2 per cent. Tungsten in powder form may be mixed with thoria and powdered molybdenum, and pressed into an ingot, which is " formed " similarly to pure tungsten ingots, the thoria being reduced by the molybdenum during this process. The ingot is then swaged and drawn in the usual manner.
Patent GB-1076684-A (GB)
Title: Improvements in and relating to a method of and system for controlling internal combustion engines, particularly marine engines
Inventor: OSTERGAARD ANDERS
IPC: C08F2/44
Filed: 1965-03-17
Abstract: 1,076,684. Regulating I. C. engines. BURMEISTER & WAIN'S MASKIN-OG SKIBSBYGGERI A. S. March 17, 1965 [March 18, 1964; Feb. 3, 1965], No. 11375/65. Heading F1B. In an 1. C. marine engine control system in which the speed-setting member 102 of a governor 101 is driven by a servomotor 110 controlled by a manµuvring member 109 and its output member 103 controls the fuel-regulating shaft 107, a comparator 121 compares the positions of speed-setting member 102 and fuel-regulating shaft 107 and stops the movement of the member 102 if the positions differ by more than a predetermined value. The governor spindle 104 is driven from the engine crank-shaft and output member 103 is connected to arm 108 through a triangle bar system 105. The speedsetting member 102 is controlled either from a manoeuvring member 109 through linkage 112 including a lost-motion take-up spring 115, or by a remote second manoeuvring member which controls servomotor 110 electrically. Rod 118 is arranged to transmit only compressive forces. Shafts 116 and 107 are respectively connected to shaft (5) and sleeve (6), Fig. 2 (not shown) in comparator 121. Shaft (5) rotates a drum (8) carrying cams (9, 10) which actuate micro-switches (11, 12) through rollers (13, 14) by means of which the servomotor 110 moves the speed setting shaft 102 to a desired position. An axially-slidable spring- loaded sleeve (15) carrying rollers (17) and an axial face cam (21), Fig. 3 (not shown), rotates with shaft (5). Cam (21) is engaged by pin (25) which is carried by a spring-loaded lever (23) which acts through rollers (29, 30) to control the servomotor on-off switch (29) and reversing switch (30). Relative movement of the shaft (5) and sleeve (6) causes cam face (19a) to engage roller (17) thereby moving sleeve (15) axially causing cam (21) to pivot lever (23) to actuate switch (29) or switch (30). A switch (46) is actuated by roller (47) from cam (48) when regulating shaft (107) is in the zero position. Operation. When the servomotor 110 is increasing the speed setting of shaft 102 and the difference in relative positions of shaft (5) and sleeve (6) causes actuation of switch (29), the current supply to servomotor 110 is stopped. With an unchanged speed the governor 101 reduces the fuel charge thereby rotating sleeve (6) and causing switch (29) to close and servomotor 110 to commence increasing the speed setting. The speed is step-wise increased in a curve slightly in excess of the propellor curve (P), Fig.4 4 (not shown). If cavitation occurs switch (30) is actuated to reverse the servomotor, the period of reversal and resumption of the increasing circuit being controlled by a timing circuit Fig. 5 (not shown). In a modification the servomotor 110 may be actuated by push-buttons to increase or decrease the engine speed within the intervals of the fixed control positions of the remote manoeuvring member.
Patent GB-705850-A (GB)
Title: Manufacture of trisazo-dyestuffs
IPC: C09B35/40
Filed: 1951-05-15
Abstract: The following N-substituted amides of 3-amino-4-hydroxybenzoic acid may be obtained by the process of Specification 606,872:-N-m-chlorophenyl, N-o-methoxyphenyl, N-p-ethoxyphenyl, N-cyclohexyl and N-methyl-N-phenyl, in addition to those specified therein.  The anilide of 4-amino-3-hydroxybenzoic acid can be made similarly.  Specifications 455,274, 532,261, 587,110, 619,969 and 649,656 also are referred to.ALSO:The invention comprises trisazo dyestuffs of the formula <FORM:0705850/IV(c)/1> where R1 is the residue of an aromatic m-dihydroxy compound with the hydroxy groups oto the azo linkages and containing at most two fused 6-membered rings, R2 is a salicylic acid residue (which may be substituted) attached pto the hydroxy group, and X is -CO-R attached pto the hydroxy or the azo group, R being alkyl, aryl, <FORM:0705850/IV(c)/2> or <FORM:0705850/IV(c)/3> The dyestuffs are preferably free from sulphonic acid groups. They are made by coupling an aromatic m-dihydroxy compound in either order with (a) a diazotized X-substituted o-aminophenol, and (b) the diazo intermediate from tetrazotized benzidine and a salicylic acid.  The dyestuffs are suitable for dyeing and printing wool, silk, leather, cotton, linen and regenerated cellulose.  They may be metallized on the fibre or in the dyebath, e.g. by the methods of Specifications 455,274 and 619,969.  In examples, (1) tetrazotized benzidine is coupled with one mol of salicylic acid and one mol of the monoazo dyestuff 3-amino-4-hydroxy-benzanilide --> resorcinol or 1 : 3-dihydroxynaphthalene; (2) cotton is dyed brown with the product of (1), followed by after-treatment with sodium copper tartrate. Other suitable diazo components are specified.  Specifications 532,261, 587,110, 606,872 and 649,656 also are referred to.
Patent GB-376827-A (GB)
Title: Improvements in apparatus for drafting textile fibres
IPC: D01H5/22
Filed: 1931-04-17
Abstract: 376,827. Drawing - apparatus for fibrous materials. MORTON, C., 32, Garden Street, Pawtucket, Rhode Island, U.S.A. April 17, 1931, No. 11405. [Class 120 (ii).] In drawing- apparatus having a group of draft rolls comprising spaced pairs 10, 11 and 12, 13 of rolls and a single intermediate carrier roll 19 disposed therebetween closely adjacent to one, 12, of the rolls of one of the pairs to co-operate therewith to grip the fibres, the front and back upper draft rolls are loaded by a saddle 18, or other adjustable component of weight common to both rolls, to which pressure is applied by a lever 16 and counterpoise 15, the lever 16 being connected to the saddle 18 by a link 17. The axis of the rear upper roll 13 is in vertical alignment with the axis of the roll 12 with which it cooperates, and the axes of the lower rolls 10, 12 lie in a plane at an angle to the horizontal. The group may also comprise a pair of rear break-draft rolls 30, 31 the lower roll 30 of which is driven directly from the shaft of the roll 10 and itself drives the roll 12. In modifications, the intermediate roll co-operates with the front pair of rolls or is disposed between the bottom rolls 10, 12.
Patent GB-921463-A (GB)
Title: New disecondary phosphines
Inventor: HOFMANN EUGEN
IPC: C07F9/50
Filed: 1960-03-31
Abstract: The invention comprises compounds of the formula: RPH-Y-PHR1 in which R and R1 are substituted or unsubstituted hydrocarbon groups and Y is a divalent hydrocarbon group or a divalent fluorinated hydrocarbon group, and each phosphorus atom is attached to a terminal carbon atom or an aromatic nucleus of the group Y.  R and R1 may be alkyl, alicyclic, or aryl radicals and Y is preferably an alkylene radical containing up to 6 carbon atoms or a phenylene radical in which case the phosphorus atoms may be substituted in the ortho, meta, or para position with respect to each other.  The compounds may be obtained by reacting compounds of the formulae RPH2 and R1PH2 in the liquid phase with an alkali metal and then reacting the resulting products with a compound of formula XYX where X is a halogen atom, the whole process being carried out in the substantial absence of oxygen.  It is preferred that the groups R and R1 should not contain halogen substituents. When R and R1 are the same a single reactant RPH2 is used.  The alkali metal is suitably sodium and X may conveniently be a bromine atom.  The first stage of the process may be effected directly if the phosphine or phosphines are liquid and in any case an inert solvent may be present, e.g. ether, n-octane, benzene, toluene or xylene.  When R and R1 are aromatic the reaction may be effected at room temperature but if they are aliphatic heating, e.g. to about 50 to 70 DEG C., may be required.  The second stage may also be effected in solution suitable solvents being the same as those specified above and the reaction may be carried out at temperatures up to 70 DEG C. when Y is aliphatic although temperatures of at least 100 DEG C. may be necessary when Y is p  aromatic.  Examples are given for the production of butylene-1 : 4-bis-monophenyl phosphine, propylene-1,3-bis-monophenyl phosphine, and p-phenylene-bis-monophenyl phosphine.  The products react with sulphur to form compounds of the formula:- <FORM:0921463/IV(a)/1> thus the compund C6H5PH(CH2)4PHC6H5 may be treated (in benzene solution) with dry sulphur at room temperature to form the sulphur derivative of the above formula in which Y is (CH2)4 and R and R1 are each phenyl.  The di-secondary phosphine products are useful as intermediates in the preparation of phosphorus-carbon or phosphorus-boron-carbon polymers which may be used for surface coating metal, glass and plastics.
Patent GB-994270-A (GB)
Title: A circuit arrangement for electrically grounding a charged fluid carrier
Inventor: CALDWELL ELLSWORTH EEDE
IPC: H05F3/02
Filed: 1962-03-26
Abstract: 994,270. Faults testing. TEXACO DEVELOPMENT CORPORATION. March 26, 1962, No. 11493/62. Heading G1U. [Also in Divisions B7 and H2] An apparatus for grounding a fuel tank vehicle to discharge static electricity consists of a source of electricity; a transformer 10 connected thereto and supplying a rectifier 23; a clamp 26 for making connections with the vehicle 28 and a relay 17, 19 controlling an indicating lamp 21 connected to the source of electricity. The jaws 26b of clamp 26 are insulated from one another and when both make contact with a metal part of the vehicle a small current flows between them to energize the relay 17 and thus to light lamp 21. Separate earths are provided for the transformer and one side of the clamp so that clamp 21 can only be lit when the clamp is truly earthed. The lamp may be replaced by a buzzer or bell or a electromagnetic device. In an alternative circuit (Fig. 2 not shown) the clamp 26 is arranged on the A.C. side of rectifier 23. A magnetic form of clamp 26 (Fig. 5a not shown) is disclosed.
Patent GB-455093-A (GB)
Title: Improvements in pumps for concrete or the like
IPC: B23B31/117
Filed: 1935-04-13
Abstract: 455,093. Pumps for concrete and the like. MARKMANN, E. C. H., 24, Grosvenor Gardens, Buckingham Palace Road, Westminster.-(Assignee of Tor kret Ges.; 68, Hedemann strasse, Berlin) April 13 1935, No. 11496. Conven tion date, June 30, 1934 [Class 102 (i)] In a pump for concrete and the like the inlet por 10 and the discharge port 11 are controlled by separate, independently movable segmental valves 2, 3 respectively.
Patent GB-1477062-A (GB)
Title: Gas turbine
IPC: F02C3/10
Filed: 1975-03-19
Abstract: 1477062 Gas turbine plant TURBINE INDUSTRIE 19 March 1975 [20 March 1974] 11523/75 Heading F1G A gas turbine plant comprises a first turbine rotor 14 and a supersonic compressor rotor 4 mounted on a shaft 6 supported by oil bearings 15 upstream of the rotors, and a second turbine rotor 18 on a second shaft 20 supported downstream of the second rotor on oil bearings 21, 22, the radius of the first turbine rotor being 2 to 10% less than that of the compressor rotor. One or more combustion chambers 8 are arranged eccentrically at the shaft axis.
Patent GB-566936-A (GB)
Title: Improvements in or relating to pumps for gritty, dirty and corrosive liquids
IPC: F04B15/02
Filed: 1943-07-15
Abstract: 566,936. Valves. HURST, J. July 15, 1943, No. 11547. [Class 135] [Also in Groups XXVI and XXVIII] A pump for gritty or corrosive liquids comprises rubber or like resilient rolling packing rings 35, 36 for the plungers 33, 34, lift outlet valves 50, 51 which open outwardly from the pump chambers 14, 15 and which are located in pockets 18, 19 extending substantially below the level of the plungers, and inlet valves 16, 17 located clearly above the pockets. There is a common inlet chamber 12 and a common outlet chamber 25, the plungers have cross-yokes 37, 38 connected by external parallel rods, and a rubber bush 44 is bonded to a common driving connecting rod 42 and to a gudgeon pin on the yoke 38. The inner surfaces of the pump may be coated with hard rubber or other non-metallic material. The inlet valves 16, 17 are made of rubber and have stems 47, 48 held in a casting 49. The outlet valves 50, 51 also are made of rubber and have metallic backings 52, 53 and stems 54, 55 resiliently supported by rubber discs in metal rims 56, 57 supported by a common frame 58. The modified outlet valves shown in Fig. 3 comprise soft rubber discs 60, 61 bonded to the upper ends of relatively offset tubular stems 62, 63, the lower ends of which are secured to the lower ends of flexible rubber tubes 64. The upper ends of the tubes 64 are secured to bolts 65 fixed in the outlet chamber 25.