baber/WOPTO huggingface dataset:
Patent GB-485211-A (GB)
Title: Improvements in, and relating to, drill shafts and detachable bits for use with rock drills
IPC: E21B17/042
Filed: 1936-12-15
Abstract: 485,211. Percussive rock drills. RIP-BITS, Ltd., and PADLEY, L. Dec. 15, 1936, No. 34454. [Class 124] In a solid or hollow rock drill, which is subjected to a rotary motion, and in which the shaft a and detachable bit b are operatively connected together with their end faces g, h in abutment with each other by means of a screw-threaded connecting member c engaging screw-threaded sockets i, k in the shaft and bit respectively, the length of the member c being less than the combined length of the two sockets, the bit and connecting member are made fast to one another after assembly together by a distortion or interruption of the screw-threaded engagement within the entrance of the socket k by displacement of metal m forming part of the face h. For this purpose the metal at the face h is left unhardened or is tempered for a short depth and the distortion is effected by a hollow caulking or like tool. In order to increase the distortion, one or more of the threads on the member c may have their crests wholly or partially removed or omitted as at n. The edge of the socket i also may be rounded or countersunk as at j.
Patent GB-474865-A (GB)
Title: Improvements in or relating to sighting boards for determining levels in the construction, maintenance or repair of railways
IPC: E01B35/02
Filed: 1936-12-16
Abstract: 474,865. Surveying - instruments. TUSTAIN, E. H. Dec. 16, 1936, No. 34583. [Class 97 (ii)] A sighting-board for determining levels of railway tracks comprises a foot portion 3 to be fixed on the rail and a horizontal member 14 the height of which above the foot portion may be finely adjusted by screw mechanism. A threaded spindle 10 fixed to the board 14 and confined to axial movement in a metal tube 1 fixed to the foot portion 3 by the engagement of a grub screw 17 thereon with slots 16 in the tube 1 may be engaged by a nut 7 rotatably mounted at the top of the tube 1.
Patent GB-791429-A (GB)
Title: An air silencer and filter assembly for internal combustion engines
IPC: F02M35/14
Filed: 1956-11-13
Abstract: 791,429. Intake silencers. KNECHT, A Nov. 13, 1956 [Nov. 28, 1955]. No. 34630/56. Class 7(2) [Also in Group XXVIII] In an air silencer and filter assembly for an I.C. engine equipped with several carburetters and wherein the air. filter assembly is adapted for connection to the base 4 of the silencer casing 1, a sheet metal member 7 provided with an axially extending shoulder 8 is superimposed over air exit openings 6 in the cylindrical lower part of the casing, and a paper filter pack 10, the periphery of which is folded in the shape of a star, is disposed over the shoulder 8 with the interposition of a ring washer 9. The top of the filter pack is covered' by a plate 12 and is retained in position by a cover'plate 2 of the casing. One of the carburetter stub connections 5 may be slidably adjustable in a known manner, and the plate 2 may be secured by quick-release catches 14. The washer 9 is carried by an annular plate 11 covering the underside of the filter.
Patent GB-155200-A (GB)
Title: Toothed wheel gear
IPC: F16H1/20
Filed: 1920-12-08
Abstract: 155,200. Krupp Akt.-Ges., F. July 21, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Toothed gearing.-In high-speed reduction gears of the floating or racking frame type, two driving-pinions A are mounted in separate rocking bearings B permitting independent movements of the pinions to obtain uniform distribution of pressure over the teeth in engagement. The pinions A are formed with journals a<1> and are screwed and keyed at one end only to the driving-shaft D, which is of comparatively small diameter so as to allow movement between the pinions and the shaft. The journals a<1> are mounted with slight axial play in two-part bearing bodies B, each formed with a slightly raised collar b<2> round its periphery seated within an opening in a fixed supporting-rib c<1> in the main bearing-box or casing C. Rotation of the bearing bodies B is prevented by pins b<3> loosely engaging sockets c<2> in the ribs c<1>, whilst movement other than in a vertical plane is prevented by suitable stop faces on the bearing bodies contacting with abutments c<3> in the casing.
Patent GB-1433059-A (GB)
Title: Vehicle safety belt
IPC: B60R22/16
Filed: 1973-07-20
Abstract: 1433059 Safety belts TAKATA KOJYO CO Ltd 20 July 1973 [22 July 1972] 34718/73 Heading A3V [Also in Division Dl] The shoulder strap of a safety belt has an upper and a lower section with greater elongation per unit length under load in the upper section 2" than in the remainder 2'. In addition the upper section may be narrower than the remainder (Fig. 2, not shown). Different types of weave may be employed in the two sections, also the selective use of nylon in the lower section and polyester or rayon staple in the upper section.
Patent GB-773186-A (GB)
Title: Improvements in and related to directional radio beacons
IPC: G01S1/02
Filed: 1955-12-05
Abstract: 773,186. Radio navigation. SVENSKA AKTIEBOLAGET GASACCUMULATOR. Dec. 5, 1955 [Dec. 6, 1954], No. 34770/55. Class 40(7) An equi-signal type course defining radio beacon is arranged to define a course accurately with signals of a strength suitable for reception fairly close to the beacon and less accurately with signals which can be received at greater ranges. The beacon aerial system may consist of two loop aerials 10 and 11. The aerial 10 radiates a signal of radiation pattern 13 in the direction of the course line and the aerial 11 radiates a signal having radiation pattern lobes in two directions symmetrically disposed on either side of the course, the lobes being of opposite phase. It is explained that if the relative amplitude of the signal radiated from aerial 10 is reduced, the angular departure from course which can be detected is also reduced but that the beacon can only be received effectively at shorter ranges than before if the total power is not increased. The less accurate course defining patterns are of use both at longer ranges and to check that the accurate signals are being correctly interpreted. The beacon may comprise a generatormodulator 17 feeding aerial 11 directly and aerial 10 through an attenuating arrangement including coil 27 capable of being short circuited by contacts 28 and also phase reversal contacts 20. Motor 38 drives contact disc 35, which controls relay 29 opening and closing contacts 28 to alter the amplitude of the signals radiated by loop 10. The motor also drives contact disc 36, to cause phase reversals to the aerial 10 feed, and contact disc 37, controlling the audio-frequency modulation of the transmitted signal. As described, disc 35 opens and shuts contacts 28 for alternate one minute periods and disc 36 causes phase changes at a higher frequency. In the case of the more accurate course definition this is synchronized with the modulator keying to give a three dash signal to one side of the course, a single dash signal on the other, and a steady series of equi-amplitude dashes on course. For the less accurate course definition period different characterizing modulations are used which as described are not complimentary; 'dashdot modulation being dominant to one side of the course and three dot modulation on the other. Auxiliary contacts 33 on relay 29 control means ensuring that the aerial system is matched to the transmitter whether the attenuator is in circuit or not.
Patent GB-866104-A (GB)
Title: Improvements in conveying installations for ceramic kiln tunnels
IPC: F27B9/24
Filed: 1957-11-07
Abstract: 866,104. Rope railways. O.F.U. OFENBAUUNION G.m.b.H. Nov. 7, 1957 [Nov. 14, 1956], No. 34791/57. Class 104 (2). In a drive for passing through a kiln tunnel carriers arranged on a track the drive comprises entrainment elements pivotally connected to an endless belt and engageable with the carriers by application parts, only one of the elements being effectively applied to the carriers at a time, wherein the elements are supported on a guide rail or rails comprising an inlet, outlet and an intermediate engagement section which rail or rails extend over the greater part of the engagement section and is so arranged relative to the parallel part that at the outlet end the entrainment elements lag or at the inlet end the entrainment elements lead. In the arrangement shown in Fig. 1 vehicles 1 and 2 are propelled by abutments 10 and 20 contacting application rollers 30 of entrainment members 3 articulated at 42, 43 or 44 to an endless conveyer 4. The conveyer 4 is taken around reversal pulleys 40, 41 and the application rollers 30, mounted on triangular plates 33, are held in the operative position by upper and lower guide rollers 31, 32 engaging the upper and lower surfaces respectively of a track 5. The track 5 is inclined at 50 at its entrance end so as to bring the entrainment members 3 into the operative position and then, at the middle portion 51, is horizontal to hold the rollers 30 in the operative position vertically above the articulation points 42, 43, 44 and finally at its end it is bent downwards and recessed, Fig. 3 (not shown), so that the lower roller 32 is no longer guided by the track 5 and the entrainment member 3 rotates about its articulation point in a counter-clockwise direction to move the application roller away from the abutments 10 or 20. Since the conveyer 4 is continuously moving the rollers 31 will move downwardly over the downwardly bent portion of the track 5 until the roller 30 bears against an outer guide part 6. The articulation points 42, 43, 44 are spaced along the conveyer 4 a distance equal to the spacing between the abutments 10 and 20. In a modification shown in Fig. 4 part of the track 5 is raised at 53 to tilt the application roller 30 firstly to a position in advance and then behind the articulation point 42, 43 or 44.
Patent GB-325311-A (GB)
Title: Improvements in electric braking and control of vehicles
IPC: B60L7/00
Filed: 1928-11-26
Abstract: 325,311. Tilling-Stevens Motors, Ltd., and Whitehorn, H. K. Nov. 26, 1928. Pole-pieces; commutating-poles.- In a petrol-electric vehicle, centrifugal devices divert current from the motor field as the speed increases during normal driving, and act to increase the field strength as the speed decreases during regenerative braking. Interpoles with non-symmetrical tips are provided for the purpose of aiding quick excitation. The Figure shows one arrangement in which the connection from an engine-driven generator 1 to a vehicle motor 7 passes through a drum controller having segments 31<a>, 31b co-operating with field diverting resistances 30 arranged to be cut in by electromagnetic contactors 33 energized by a battery 32 at times determined by the successive closure of differently adjusted centrifugal switches 36. This action is obtained both in the motoring and braking positions of the controller. Interpoles 9 with non-symmetrical tips are fitted to the motor 7; similar interpoles 3 are fitted to the generator 1. The shunt excitation of the generator is controlled automatically according to speed and current conditions by resistances 27 associated with contactors 37 tending to be opened by electromagnets and to be closed by centrifugal devices. In the " idling " position of the controller the generator and motor remain connected, but an engine throttle is closed by an electromagnet 38. The centrifugal contactors may be replaced by a centrifugally controlled carbon pile resistance.
Patent GB-894632-A (GB)
Title: Modified polyethylene
IPC: C08F8/34
Filed: 1958-10-31
Abstract: Pulverulent polyethylene of molecular weight over 10,000 is treated with sulphuric acid of concentration at least 75% or with oleum containing not more than 20% sulphur trioxide, at 30 to 125 DEG  C. for at least 15 minutes to produce a sulphated polyethylene.  The treatment may take place in a protective atmosphere free from molecular oxygen.  The polymer may be prepared using a Ziegler catalyst.  Specifications 799,832 and 801,031 are referred to.
Patent GB-841982-A (GB)
Title: Manufacture of polyolefines of high molecular weight
IPC: C08F10/00
Filed: 1956-11-19
Abstract: Olefins e.g. ethylene are polymerized under low pressure conditions in the presence of a catalyst comprising (1) a compound obtained by reacting an aluminium alkyl halogen compound and at least one compound of the elements titanium, zirconium, hafnium, vanadium, niobium, chromium, molybdenum, thorium or uranium and (2) an aluminium alkyl halogen compound dispersed in a halogenated aliphatic or cycloaliphatic hydrocarbon.  The halogenated hydrocarbon may function as the polymerization diluent.  The ingredient (2) of the catalyst may be added portionwise to the polymerizable mix.  The halogenated hydrocarbon may be methyl chloride, methylene chloride, chloroform, carbon tetrachloride, ethyl chloride, dichlorethane, tetrachlorethane, 1:2-dichloropropane, 1:2- and 2:3-dichlorobutane, n-butyl chloride, i-butyl chloride, tert-butyl chloride, hexyl chloride, octyl chloride, 1:2-dibromethane, chlorobromormethane, CF2Cl-CF2Cl, CFCl2-CF2Cl, and mixtures. In example 1, Ingredient (1) is made reacting a mixture of monoethylaluminium dichloride and diethylolluminium monochloride in 1:2 dichlorethane with T.Cl4 added portionwise and recovering the product T1Cl3, adding this product when purified to 1:2-dichlorethane saturated with ethylene and adding portionwise to this polymerization mix ethylaluminium sesquichloride suspended in the dichlorethane, in Example 2, the process of Example 1 is repeated but methylene chloride used as the halogenated hydrocarbon, in Example 3 ingredient (1) of the catalyst is prepared in hexane and the polymerization effected using carbon tetrachloride as the diluent and in Example 4 the process of Example 3 is repeated using as the diluent tetrachlorethane.  The polymer is recovered by conventional methods.  Specifications 828,281 and 841,981 are referred to.
Patent GB-358347-A (GB)
Title: Improvements relating to chucks
IPC: B23B31/16
Filed: 1930-11-24
Abstract: 358,347. Chucks. VEREINIGTE STAHLWERKE AKT.-GES., 67, Breitestrasse, Dusseldorf, Germany. Nov. 24, 1930, No. 35392. Convention date, Dec. 12, 1929. [Class 83 (iii).] In a self-centring chuck the jaws are moved radially by lever-actuated toothed segments engaging radially arranged worms on the jaws, the range of adjustment of the chuck being varied by rotating the worms about their axes, either individually or collectively. The worms 3 are rotatably mounted in recesses 4 in the jaws 1 and are engaged by toothed segments 5 rockable about pivots 6 in the body 2. Arms 7 on the segments engage a sleeve 8 which is axially movable to open or close the chuck by pneumatic or hydraulic means or by other means such as mechanical or electromagnetic means. In a modification the arms 7 are extended to pass through the chuck spindle and are engaged by a plunger on the end of a draw spindle. The worms 3 may be rotated individually by a key &c. as shown in Fig. 1 or collectively by means of pinions 11, Fig. 4, thereon meshing with an annular gear 12, in which case individual adjustment may be given to the jaws by screws 15 rotatable in the jaw bodies 13.
Patent GB-997448-A (GB)
Title: Improvements in electrical rotating machine armatures of the flat annular airgap type
IPC: H02K23/54
Filed: 1963-09-09
Abstract: 997,448. Dynamo-electric machines. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. Sept. 9, 1963 [Sept. 11, 1962], No. 35484/63. Heading H2A. Deformation of a flat annular air-gap electrical rotating machine armature comprising an annular carrier sheet bearing the armature winding is reduced by the provision of an annular stretching structure secured to the outer peripheral edge of the sheet to apply thereto a substantially uniformly distributed radial force. In the Figs. 3 and 4 embodiments shown, the structure comprises a ribbed resilient plate 23 secured to the hub 6 of a rotary shaft 25 and having hooks 51 sprung into slots 22 in the edge portion 21 of the carrier sheet, and in the Fig. 1 embodiment, not shown, sprung tabs are glued to the sheet edge portion. The stator comprises a ring of either permanent magnets 2 or magnetized ferrite, and a magnetic annulus 3 provided between the armature and its plate 23 is either fixed to the plate 52 carrying the magnet ring or freely rotatable as in Specification 946,935. In Fig. 5 the armature 1 is carried in a rotary cage 31 . . . 33 borne on a stationary shaft 38, and is stretched by the conical engagement 43 of an annulus 42 with a ring 40 having tabs either glued to or passing through holes in the sheet edge. Specifications 874,394, 908,923, 960,275 also are referred to.
Patent GB-976319-A (GB)
Title: Process for the production of alkali metal salts of nitrilo triacetic acid
Filed: 1963-09-09
Abstract: 976,319. Nitrilo triacetic acid and its alkali metal salts; disodium iminodiacetate; sodium glycinate. J. R. GEIGY A.G. Sept. 9, 1963 [Sept. 10, 1962], No. 35508/63. Heading C2C. Alkali metal salts of nitrilo triacetic acid are prepared by adding a substantially equimolar mixture of hydrogen cyanide and formaldehyde stabilized with an aqueous mineral acid to an aqueous solution of an alkali metal hydroxide and ammonia at a constant rate for about 2 to 4 hours. The alkali solution is initially maintained at a temperature of about -5 to 5C. and is raised gradually to about 100C. during the addition, after which the reaction mixture is boiled for about 15 minutes and the desired reaction product is recovered. Sodium hydroxide is the preferred alkali metal hydroxide. The alkali metal hydroxide is preferably present in excess over the amount theoretically required and no more than the theoretical amount of formaldehyde is preferably used. Examples describe the preparation of trisodium nitrilo triacetate and its subsequent conversion to nitrilo triacetic acid. Disodium iminodiacetate and sodium glycinate are obtained as by-products.
Patent GB-1511057-A (GB)
Title: Static storage elements
IPC: H01L29/792
Filed: 1975-08-29
Abstract: 1511057 Semiconductor devices SIEMENS AG 29 Aug 1975 [26 Sept 1974] 35660/75 Heading H1K A radiation-sensitive charge storage element comprises a FET structure 1-5 in which the gate insulation 4 has a region 6 which is of a homogeneous material and includes a high density of charge traps, the average density of charge traps in a plane perpendicular to the semiconductor surface and on to which all the charge traps in the region 6 are projected in a direction perpendicular to the plane being at least 10<11> per cm<2> The region 6 may be formed by ion implanting Kr or Xe ions in a SiO2 layer on a Si body.
Patent GB-1431396-A (GB)
Title: Method of capturing and displaying an image of a moving item
IPC: G03B21/60
Filed: 1973-07-27
Abstract: 1431396 Liquid crystal compositions EASTMAN KODAK CO 27 July 1973 [28 July 1972] 35785/73 Heading C4X [Also in Divisions G2- G3]  A liquid crystal is composed of 5 molar per cent cholesteryl 2-ethylhexanoate in N-(pmethoxybenzylidene)-p-butylaniline.
Patent GB-1207685-A (GB)
Title: Improvements in means for fixing tiles
Inventor: DAVID HENRY ROBERT
IPC: E04F13/08
Filed: 1967-08-04
Abstract: 1,207,685. Tiling. HEREFORD TILES Ltd. 30 Oct., 1968 [4 Aug., 1967], No. 35997/67. Heading E1B. Tiles 4 are secured to a wall by a rigid plastics sheet 1 having cells defined by integral U-shaped ribs 2, the spacing between the arms of the U being 3/32". The sheet is adhered to the wall by a layer of adhesives and then a tile secured in each cell, or the tiles may be secured in the cells before the sheet is secured to the wall.
Patent GB-452554-A (GB)
Title: Improvements in quick-break electric switches
IPC: H01H19/635
Filed: 1935-12-31
Abstract: 452,554. Snap action switches. HOPE, V., Upton Hall, Macclesfield. Dec. 31, 1935, No. 36026. [Class 38 (v)] A snap-action switch comprises pairs of spring clip contacts A carried on insulated rods a<1> which serve to connect end plates E having slots 12 in which slide the ends of a rod bl carrying bridging contact plates B. The rod b<1> is connected by links 13, 14 to an operating spindle C which also carries a link 15 connected to a fixed point 17 by a spring 16 which gives a snap action when the spindle C is operated with lost motion by a handle D. Pivoted on each plate E is a spring catch H which, when the switch is closed, engages a pin 22 on the lid F and which is released when the switch is opened by the rod b<1> engaging the tail 20 of the catch. The contacts A are of the type described in Specification 447,253 and are formed with a main part 1 and a spark taking part 2.
Patent GB-1117481-A (GB)
Title: Electrically conductive synthetic polymers
IPC: H01B1/12
Filed: 1965-08-23
Abstract: A composition comprises a salt of a polymer having quaternary nitrogen groups and of 7,7,8,8 - tetracyano - quinodimethan (TCNQ), said salt containing a sufficient quantity of additional TCNQ to give the composition, when in the form of a solid, a conductivity greater than 10-10 mho per centimetre.  The salts may be obtained by (1) polymerizing a monvinyl monomer containing a tertiary nitrogen atom, or (2) polymerizing a monomer having a primary or secondary amine group, e.g. ethylene imine, and subsequently alkylating, or (3) reaction of a tertiary amine with a polymer containing halomethyl groups, e.g. halomethylated polystyrene and polyphenylene ethers, followed by quaternization and reaction with a simple TCNQ salt.  The compositions may also include thermoplastics and elastomers such as polyurethane.  In the examples: (1) polyvinylpyridine is quaternized with dimethyl sulphate, reacted with the lithium salt of TCNQ, and mixed in dimethyl formamide with free TCNQ, (2) and (3) the procedure of (1) is followed but the quaternization is with methyl iodide followed by conversion to the chloride form using an anion exchange column, (4) a styrene-2-vinylpyridine copolymer is quaternized using n-butyl iodide and converted to the TCNQ salt by reaction with the lithium salt of TCNQ, followed by addition of free TCNQ, (5) poly-(4-dimethylamino styrene) was quaternized with methyl iodide, treated with lithium TCNQ and free TCNQ added, (6) poly - (2,6 - dimethyl - phenylene) ether was chlorinated, reacted with (CH3)3N, treated with lithium TCNQ, and free TCNQ added, (7) polyethyleneimine was quaternized with dimethyl sulphate, reacted with lithium TCNQ and free TCNQ added, and (8) polyvinylimidazole was quaternized with methyl iodide, reacted with lithium TCNQ, and free TCNQ added.ALSO:Films are formed by coating glass slides with a composition comprising a salt of a polymer having quaternary nitrogen cationic groups and of 7, 7, 8, 8-tetracyanoquinodimethane (TCNQ), said salt containing a sufficient quantity of additional TCNQ to give the composition a conductivity greater than 10-10 mho per cm.. Exemplified polymers are those of vinyl pyridine, vinyl pyridine and styrene, aminostyrene, ethyleneimine, N-vinyl-imidazole and a polyphenylene ether.