baber/WOPTO huggingface dataset:
Patent GB-674018-A (GB)
Title: Improved wood boring bit
IPC: B27G15/00
Filed: 1949-11-30
Abstract: 674,018. Augers. TAYLOR, A. E. Nov. 27, 1950 [Nov. 30, 1949], No. 30767/49. Class 83 (iii). A wood-boring bit comprises a spindle 10 having a shoulder 14 against which abuts the shank 20 of a detachable cutterhead 15 on a reduced end 12 of the spindle, a tapering helicallythreaded lead point 13 on the spindle projecting beyond the cutter-head. The cutter-head may be secured to the end 12 by screw threads or by flat surfaces and a grub screw passing through the shank 20 and into the end 12. A scriber 16, cutting edge 17 and chip-clearing slot 18 are provided on the cutterhead.
Patent GB-739030-A (GB)
Title: Composition of a conductor wire for sealing into glass
Inventor: REDSTON GERALD DAVID
IPC: C03C27/04
Filed: 1953-11-06
Abstract: 739,030. Leading-in wires for electric lamps. STANDARD TELEPHONES & CABLES, Ltd. Nov. 6, 1953, No. 30789/53. Class 39 (2). [Also in Group XXXVI] A composite wire for forming an air-tight seal with a lead glass of the kind used for the envelopes of electric discharge devices has an inner core of a nickel-iron alloy and a uniform outer sheath of copper in which the percentage of nickel in the alloy and the percentage of copper by weight of the whole wire are given respectively by the co-ordinates of points within an area defined by joining together consecutively the following co-ordinates : 44, 14; 45, 10.5 ; 46, 9; 47, 8.5 ; 47, 6.5 ; 46, 7 ; 45, 8 ; 44, 10. Preferably the lead glass has an expansion coefficient of 90 x 10<SP>-7</SP> per ‹C. between 20‹ C. and 350‹ C., an annealing point at 430‹ C. and a percentage composition of SiO 2  57.4, Al 2 O 3  1.3, Na 2 O 3.9, K 2 O 7.6 and PbO 29.3.
Patent GB-982858-A (GB)
Title: Shaped structures of synthetic polymers
IPC: F16B5/12
Filed: 1962-08-10
Abstract: Shaped articles, especially films and bags, are made from a composition comprising (by weight) 75-85% of a copolymer of ethylene and butene-(1) (said copolymer containing 1-10% of butene-(1) and 25-15% of butyl rubber, polyisobutylene or a mixture of the two. Other conventional additives may be employed.
Patent GB-387776-A (GB)
Title: Apparatus for reading a divided circle
IPC: B23B39/04
Filed: 1931-11-07
Abstract: 387,776. Theodolites &c. BAKER, T. Y., Fircroft, Burton's Road, Hampton Hill, Teddington, Middlesex. Nov. 7, 1931, No. 30887. [Class 97 (ii).] When reading the divided circle of a theodolite &c., an image of a scale marking 180‹ from the marking it is desired to read is formed in proximity to and is then compared with the latter. Thus one marking is always brought to an image during the optical transmission once more than the other. In the form shown in Fig. 1, the graduated circle comprises a fixed glass cylinder 1. Alternatively a transparent or opaque disc or conical member may be used. A spindle 5 rotatable with the telescope carries an arm 4 supporting a micro. scope 3 opposite the marking to be read and lenses 6 adapted to form an image adjacent the latter of the diametrically opposite marking. Cylindrical lenses 7 on arms 8 are provided to counteract the optical effect of the cylinder 1. The microscope 3 is provided with a mask 11 provided with an aperture enabling the degree markings to be read and with two adjacent apertures separated by a strip serving as a datum line. In use the mask is moved by a micrometer until the datum line is midway between the two images. In the theodolite shown in Fig. 5, the marking it is desired to read and an image of the opposite marking obtained by light from the mirror 21 and lenses 6 is transmitted to the microscope 3 by lenses 22, 23, 24 and prisms 25, 26, 27. A mask 11 is provided with an aperture 12 (Fig. 7), indicating degree markings and two apertures 13, 14, forming a datum line 16. In use, the two images of the markings are moved together until the datum line is midway therebetween by a parallel sided plate glass 33 included in the optical path and mounted on a pivoted plate 28 rocked by the knob 30. The plate 28 is connected by a pin and slot to a slide 35 carrying a transparent screen 37 adapted to indicate the correction for centreing error in the microscope 3 through a further aperture 38 in the screen 11. A similar graduated circle 1a is provided for the motion of the telescope 19 about the horizontal axis and a prism 41 may be adjusted when desired to reflect the indications thereof into the optical system for reading.
Patent GB-1074989-A (GB)
Title: Electric current-producing cell with buffer zone
IPC: H01M6/24
Filed: 1965-07-21
Abstract: 1,074,989. Primary cells. LIVINGSTON ELECTRONIC CORPORATION. July 21, 1965 [Oct. 27, 1964], No. 30955/65. Heading H1B. A more electropositive metal than zinc is used in a cell having separate anolytes and catholytes isolated from each other by a buffer zone containing a solution of a salt that has a cation of a more electropositive metal than zinc and an anion at least as low in the electrochemical series as the depolarizer, the zone being bounded by on the anolyte side by a positive ion-permeable diaphragm containing bound negative groups and on the catholyte side by a negative non-permeable diaphragm containing bound position groups. The anolyte is substantially free of hydrogen ions as a protic solvent and has a specific electrical conductivity of at least 10<SP>-3</SP> ohms<SP>-1</SP>cm.<SP>-1</SP> The catholyte is a protic solvent and contains an acid the anion of which is at least as low in the electrochemical series as the depolarizer and has a specific conductivity of at least 10<SP>-3</SP>ohms<SP>-1</SP>cm.<SP>-1</SP>
Patent GB-154185-A (GB)
Title: Improvements in shutting-off devices for conduits leading to cocks, e.g. kitchen cocks, valves, or the like
IPC: F16K43/00
Filed: 1920-11-02
Abstract: 154,185. Sundberg, E. L. Nov. 14, 1919, [Convention date]. Valves actuated indirectly.-A valve device for closing the supply conduit when the main valve is removed, is positively moved towards its seat by the movement of the main valve so that the flow may be largely reduced without entirely removing the main valve. The device comprises a valve spindle 3 formed with a right-angle passage 8, 9 and adapted to work through a partition 2 secured in a casing 1 to allow a chamfered valve member 4 to engage a seat 5. The spindle is further provided with a cross-piece 6 having screw threads to engage the casing 1 and shaped to engage slots formed in the tail 7 of the main valve.
Patent GB-651261-A (GB)
Title: Improvements in and relating to dash-pots for damping systems
IPC: F16F7/08
Filed: 1947-11-24
Abstract: 651,261. Gyroscopic apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 24, 1947, No. 31087. Convention date, Jan. 23, 1943. [Class 97 (iii)] [Also in Group XXXII] In a gyroscope horizon for aircraft, which may be of the electric motor type, comprising an inductor element 12 mounted on a rotor shaft 13 and co-operating with a pendulum magnet 14, instability of the pendulum magnet is prevented by dashpots 20 and 22 (see Group XXXII), which are mounted respectively between a gimbal ring 15, pivoted about a horizontal axis 16, and a fixed support 21 and between the gimbal ring 15 and a bail member 17 which is pivoted to the former on an axis 18 at right angles to and intersecting the axis 16.
Patent GB-864009-A (GB)
Title: Purification of alumina
IPC: C01F7/46
Filed: 1957-10-04
Abstract: The sodium contaminant is removed from alumina by contacting the alumina, at 1000 DEG F. at least, with aluminium fluoride, boric acid, hydrofluoric acid, ammonium fluoride, chloride or sulphate, or aluminium chloride or sulphate.  The sodium values are removed in volatile form with the kiln gases.  The contact may be effected in a rotary furnace in which the alumina flows countercurrent to hot gases; the additive may be entrained in the primary air to the burner of such a kiln.  Alternatively a fluidised bed furnace may be employed, in which case the additive is suspended in a supplemental flow of gas which is injected into the bed.  According to an example, alumina trihydrate was fed to a rotary kiln countercurrent to hot gases entering through a burner at the opposite end.  Aluminium fluoride (4% based on the alumina feed) was entrained in the primary air to the burner.  The alumina reached a temperature of 1400 DEG F., and the soda content thereof was reduced from 0.5% to 0.1%; the average size of the crystals of the alpha alumina product was 10 microns.  The flue gases leaving the cold end of the kiln contained 20% of cryolite.
Patent GB-554593-A (GB)
Title: Improvements in or relating to the preparation of alumina
IPC: C01F7/32
Filed: 1939-12-01
Abstract: 554,593. Aluminium compounds. ENGLISH CLAYS. LOVERING, POCHIN & CO., Ltd., DAVIES, R. J., DERING, H. O., and PARKER, T. W. Dec. 1, 1939, No. 31287. [Class 1 (iii)] In the preparation of alumina from clay by a method such as that described in Specification 554,591 in which ammonium alum is obtained by sintering clay with ammonium sulphate ammonium alum is decomposed by passing a solution of ammonia and ammonium sulphate through a stationary mass of the damp crystals. Specification 120,550, [Class 1 (iii)], also is referred to.
Patent GB-330855-A (GB)
Title: Improvements in and relating to stomach tubes
IPC: A61F2/04
Filed: 1929-10-15
Abstract: 330,855. Wilkins, J. A. Oct. 15, 1929. Syringes and like appliances. -A stomach tube, employable for feeding, irrigating, or diagnostic purposes, comprises a flexible tube 1, for example of rubber, reinforced at one end 2 and closed at the other end. The closed end is weighted by mercury 5, or lead shot, or other finely divided metal, the weight being completely enclosed by a rubber partition 4. Above the partition, holes 6 of smaller individual diameter than that of the tube, but of larger aggregate aperture, are provided. In a modification, the, weighted portion is separate from the tube and connected therewith by a nut and bolt.
Patent GB-663192-A (GB)
Title: Improvements in agricultural and like machinery
IPC: A01D34/00
Filed: 1948-12-03
Abstract: 663,192. Sawing. MARPLES & SON, Ltd., R. M., and MARPLES, S. A. Dec. 2, 1949 [Dec. 3, 1948], No. 31351/48. Class 145 (ii) [Also in Group I] Hedge-cutting and crop-cutting machinery is provided with reciprocating or rotating cutters supplied with compressed gas in which is suspended a fine mist of oil to lubricate and simultaneously clean the cutting mechanisms. Compressed air with oil in suspension is brought through a flexible hose 1 to a tap 2 and thence through a hollow handle 3 to a reciprocating air motor described in Specification 663,259, [Group XXIX]. The motor, which is attached to the handle by a screwed ring 4, comprises a piston 5 fitted with rings 6 and slidable in a cylinder liner 7 in a tubular housing 8a. The oil-impregnated air passes by means of a sleeve valve alternately to chambers 9, 10 at each end of the piston thereby reciprocating the piston and its connecting rod 11 to drive the cutter blade 12. The forward air chamber 10 is closed by a disc 13 fitted with a bearing 15 for the connecting rod and the rear chamber 9 is similarly closed. The housing 8a is extended to form a housing for the blade 12. This extension has a flattened portion 8b-8c forming a duct 16 and slot 17 for the blade Fig. 2 (not shown). The leading edge 18 of the extension is notched to form teeth 20 coacting with the blade 12. In the opposite edge of the extension, notches 21 may be formed exposing blade teeth 23 suitable for cutting thick woody growths. The blade is slotted to accommodate guide screws 24, 25. Oil from the compressed air condenses in the moving surfaces of the motor to lubricate them, exhaust air and oil escaping into a cavity 27 and along the duct 16 and finally passes to the atmosphere between the blade 12 and the teeth 20, simultaneously removing dust, grass, sawdust and the like from the cutting edges, while leaving a film of oil on the contacting surfaces. Sealing material 28, 29 may be used to close alternative exits for the air. In an alternative construction a circular cutter disc driven by a rotary air motor is mounted on a vehicle, the motor being adjustable on a supporting arm to vary the position of the disc. Compressed oil-impregnated air is fed to the motor and passes to the atmosphere through vents in the motor casing. Oil from the extruded air impinges on the disc and after condensation flows over the disc to the cutting edges. Holes may be drilled through the disc to allow the oil to pass to the remote surface.
Patent GB-372236-A (GB)
Title: Gold alloy
IPC: C22C5/02
Filed: 1931-11-12
Abstract: A gold alloy consists of 0,5-4 per cent of cobalt, 0,5-1 per cent of chromium, copper and silver in the ratio of 1,2 : 1-1\15 : 1, and sufficient gold, e.g. 65 or 75 per cent, to comply with the required standard.  The alloy after tempering may be subsequently annealed by heating for 4 hours at 200 DEG  C.
Patent GB-1298073-A (GB)
Title: Improvements in or relating to level detection
Inventor: MCDONALD BRIAN JAMES
IPC: G01F23/288
Filed: 1969-06-23
Abstract: 1298073 Radiation level detecting gauge UNITED KINGDOM ATOMIC ENERGY AUTHORITY 15 June 1970 [23 June 1969] 31492/69 Heading G1A An apparatus for detecting levels within a container comprises two sources of gamma radiation 11, 12, Fig. 1 located one above the other on the outside at one side of a container 10 a gamma ray detector 13 on the opposite side and two collimators 14, 15 completing paths between the sources and the detector. The arrangement produces a characteristic as in Fig. 2, the characteristics of which may be adjusted by altering the spacing of the sources and the angle of the collimators.and may be used to indicate a middle level and two limit levels.
Patent GB-1066930-A (GB)
Title: Process for electrolytic preparation of quaternary ammonium compounds
IPC: C25B3/00
Filed: 1965-07-23
Abstract: Quaternary ammonium hydroxide or sulphonate is made by electrolysis in a two-compartment cell formed by a porous diaphragm the anolyte consisting of an aqueous solution of quaternary ammonium chloride, and the catholyte is water alone or containing a benzenoid sulphonic acid.  Electrolysis conditions are carefully controlled as follows: flow of anolyte and catholyte at the rate of 0.25 to 25 lbs per hour per amp. of current applied, and preferably 1 to 10 lbs, C.D. 0.05 to 0.85 A.S. cm of anode surface; voltage 3 to 10 V, and temperature of anolyte not to exceed 80 DEG C., and of the catholyte not to exceed 100 DEG C. The higher parameters are applied at the higher rate of recirculation of the two electrolytes with external cooling if necessary.  The concentration of the anolyte salt is 5 to 70 per cent by wt., and 2 to 20 per cent is preferred.  The concentration of hydroxide produced in the catholyte should not exceed 20 per cent. This may be filtered through an ionic permeable cation selective membrane to remove chloride ions.  The quaternary compounds e.g. tetramethyl ammonium hydroxide or tetramethyl ammonium toluene sulphonate, are used in hydro-dimerization of acrylo-nitrile.
Patent GB-352851-A (GB)
Title: Improvements in tractor or motor ploughs
IPC: A01B61/04
Filed: 1930-10-21
Abstract: 352,851. Implements for working land. FAIRWEATHER, H. G. C., 65, Chancery Lane, London.- (Aktiebolaget Ífverums Bruk ; Íverum, Sweden.) Oct. 21, 1930, No. 31638. [Class 6 (i).] In a motor or tractor plough in which the plough body is carried by a beam pivoted to the plough frame, two interconnected links are pivoted to the beam and frame, respectively, at points nearly in register with each other in the working position, one of the links being acted upon by a spring which tends to maintain the plough body in working position and to restore it to that position after it has been moved out of it. The beam 2 is carried by a bearing member 3 pivoted at the point 4 on the frame 5. The two links 6, 7 may be pivotally connected to one another at their upper ends, the lower ends being pivoted at points 9, 10 to the frame 5 and member 3, respectively. A spring 11 is connected to the link 6 and to a bracket 12. The point of connection with the link 6 may be adjustable. If the plough body strikes an obstruction it turns about the pivot 4 and passes over the obstruction. It may be reset by backing the plough until the spring can restore the links to the position shown.
Patent GB-308630-A (GB)
Title: Improvements in or relating to microphones
IPC: H04R21/02
Filed: 1927-11-24
Abstract: 308,630. Siemens Bros. & Co., Ltd., and Dutton, G. F. Nov. 24, 1927. Microphones; d i a - phragms. - In a carbon granule transmitter which can be used in any position, the electrodes 8 stand forward from the ends of the granule chamber by an amount less than 25 per cent of the internal diameter of the chamber. The mean head of the granules acting on an electrode does not fall below about one half the maximum value of the mean head, whatever the position of the transmitter. The carbon electrodes may be mounted in insulated metal tubes, or one electrode 8, Fig. 2, may be mounted in a tube 4 secured by a rivet 20 to the diaphragm 19, and the other may be secured to an insulated disc 3 having a screwed stem engaged by a nut 16. The granule chamber may be closed by a number of silk or mica rings 11 held in place by an annular member 12 and spring ring 13. In the form shown in Fig. 3, the back electrode is spaced from the rear wall by a ring 21 and the front electrode is supported by a stem 24 engaging the main diaphragm 19 and a flanged block of rubber or felt 23. The diaphragm 19. Fig. 4, is bent as shown at 30 and secured to the casing 9 by a flat outer edge 29. A pin hole 32 permits equalization of air pressure on both sides of the diaphragm 19. An auxiliary diaphragm 31 of moisture-proof material, such as oiled or waxed silk, protects the main diaphragm 19. Minor modifications are described in the Provisional Specification.
Patent GB-843665-A (GB)
Title: Blends of silicone rubber and crystalline ethylene polymer and method for productionthereof
IPC: C08L23/02
Filed: 1957-10-10
Abstract: A composition comprises a minor amount of an ethylene polymer having a crystallinity of at least 70% at 25 DEG C. and a major amount of an unvulcanised silicone rubber.  Specified ethylene polymers are polyethylene and copolymers of ethylene with up to 10% of propylene, 1-butene, 2-butene, 1-pentene and 1-octene, prepared preferably using a chromium oxide containing catalysts although Ziegler-type catalysts may also be used.  The silicone rubber may be prepared by the condensation of an organochlorosilane, e.g. dimethylolechlorosilane, this can be formed using methyl chloride, powdered silicon and a copper catalyst, or using silicon tetrachloride and the reaction product of methyl chloride and magnesium chips.  Mixtures of biand trifunctional alkylchlorosilanes or other halide derivatives are hydrolized in excess water and condensed by stirring and heating. Inorganic fillers such as titanium dioxide, zinc oxide, ferrous oxide and silicon dioxide may also be present.  Specifications 790,195 and 804,641 are referred to.
Patent GB-1211374-A (GB)
Title: Electric resistance welding
Inventor: BROAD MICHAEL STANLEY
IPC: B23K11/34
Filed: 1967-07-11
Abstract: 1,211,374. Welding by pressure. BRITISH AIRCRAFT CORP. Ltd. 7 Oct., 1968 [11 July, 1967], No. 31887/67. Heading B3R. In electric resistance welding a single drop of water is added to the welding region before the electric welding current begins to flow through the region. A sandwich thermocouple formed by a doubled copper wire 10 over a doubled constantan wire 11 is laid upon a cleaned aluminium or aluminium alloy structure 12 to be tested, a drop of water 13, preferably distilled, is placed on top of the thermocouple to run down to contact the structure 12 and then a pressure triggered electrode 14 of a condenser discharge spot welding apparatus having a second electrode 15 is placed on the copper wire and welding of the thermocouple to the structure 12 is effected. Alternatively the water may be placed between the thermocouple and the structure 12.
Patent GB-160537-A (GB)
Title: Improvements in friction gearing for motor vehicles
IPC: F16H37/08
Filed: 1919-12-20
Abstract: 160,537. Tasker, H. Dec. 20, 1919. Variable-speed friction gearing.-A disc D on the driving shaft E is engaged by a roller F sliding on a vertical shaft S which drives the differential shaft G of a motor vehicle. The driving-shaft E rotates in a housing H carried by links X, X<1>, which permit the disc D to be moved to and from the roller F, or the roller and the parts connected thereto may be moved to and from the disc. The roller is moved along its shaft by a lever L, L', a link L<2>, and an arm B sliding on a guide N, and the weight of the roller may be balanced by a weight W or by a spring pulley at Y.
Patent GB-900523-A (GB)
Title: Polymerization of conjugated diolefins
IPC: C08F36/04
Filed: 1960-09-16
Abstract: Conjugated diolefins are polymerized alone or with a comonomer by contacting at least one open chain 1;3-diene having from 4 to 10 carbon atoms with or without a comonomer with a catalyst consisting of (a) at least one alkali or alkaline earth metal, or alloy or organometallic compound thereof, and (b) one or more Lewis bases or with the complex compound formed by the reaction of (a) and (b), said Lewis bases being such that they neither react with the metal alloy or organometallic compound during the polymerization to form hetero polar compounds having positively charged metal atoms, nor react with the metal, alloy or organometallic compound to form complex compounds not capable of initiating the polymerization.  The Lewis bases are tertiary amines having one or more tertiary nitrogen atoms which are not members of an aromatic ring system, tertiary phosphines, tertiary arsines, tertiary stilbines and thioethers not capable of forming metal salts.  Specified diolefins are 1-methyl-, 2-methyl-, 2,3-dimethyl-, 2-ethyl-, 2-phenyl-, 2-chloro- and 1,3-butadiene. Styrene, vinyl toluene and alpha-methyl styrene are specified as comonomers.  Oxygen and moisture are preferably absent and a solvent, e.g. aliphatic hydrocarbons, their mixtures, cycloaliphatic hydrocarbons, and aromatic hydrocarbons may be present.  The polymerization may take place in the presence of halogenated hydrocarbons such as butyl chloride, allyl bromide, vinyl chloride, cyclohexyl chloride, bromobenzene and 1-chloronaphthalene.  Specified Lewis bases are triethyl, tripropyl, tributyl and triallylamine, tricyclohexylamine, hexahydrodimethylaniline and hexahydrotoluidine, N-alkyl or N-cycloalkyl derivatives of piperidine, pyrrolidine and morpholine, endoethylenepiperidine, endomethylenepiperazine and endoethylpyrimidine, triethyl and triphenyl phosphine, methydiphenyl and dimethyl-phenyl phosphines, the equivalent arsines and stibines and diethyl-, dibutyl-, diphenyl and alpha-alpha-dinaphthyl sulphides.  The polymer may be precipitated, when made using a solvent, using alcohols, acetone, alcohol/water and acetone/water mixtures.  Specifications 884,699 and 895,607 are referred to.