baber/WOPTO huggingface dataset:
Patent GB-154230-A (GB)
Title: An improved file
IPC: B23D71/00
Filed: 1920-11-25
Abstract: 154,230. Blake, G., (Assignee of Bartholomaus, R.). Nov. 3, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. File and rasp cutting; compound forms.-A file is constructed from a metal block by cutting therein longitudinal grooves slightly inclined to the axis of the file and transverse grooves not quite perpendicular to the axis, thus forming rhomboidal teeth which overlap or are relatively staggered and have a double edge adapted to cut laterally as well as in,the line of movement of the teeth. Fig. 1 shows the disposition of the longitudinal grooves f and the transverse grooves g; Fig. 2 is a section along CD of Fig. 1 showing the shape of the longitudinal grooves f, the width a of which is slightly less than the pitch, leaving narrow untouched strips b; and Fig. 3 is a section along AB showing the transverse grooves g formed by milling a deep groove of angle # in a shallow groove of angle a. As applied to a round file, Fig. 4, or to a half-round file, the transverse grooves consist of single or multiple screwthreads formed in a lathe, and the longitudinal grooves may be turned or milled in a rod subsequently twisted, or by drawing or broaching. The latter methods are stated to be also applicable to other than round files. The teeth may be moulded from heated metal by pressure between dies e, Fig. 6, which are subsequently vigorously cooled to harden the metal; this process being specially applicable to files consisting of a steel facing on an iron backing. The teeth may also be indented by a suitably patterned impressing cylinder or a grooved cylinder w, Fig. 3.
Patent GB-468358-A (GB)
Title: Improvements in or relating to gramophones or the like
IPC: G11B17/02
Filed: 1935-12-02
Abstract: 468,358. Electric switches. V. G. MANUFACTURING CO., Ltd., and GELDEREN, F. M. VAN. Dec. 2, 1935, No. 33355. [Class 38 (v)] [Also in Group XXXVIII] A device for opening the circuit of an electric motor driving a gramophone and for ensuring an interval of time before the circuit is again closed comprises a cam 6 on the mechanism 5 which returns the sound reproducer arm to starting position, a dashpot being adapted to be operated by the cam 6 to open the circuit, and after a given time to close the circuit again. As shown, the cam 6 depresses the dashpot plunger, a pin 9 on which then bears on a limb 11 of a trip device 10, 11 pivoted at 13 with the switch ; and this rocks the switch to open the circuit. After a given time, the pin 9, in rising again, bears on the limb 10 and rocks the switch back to the closed position. A friction spring is provided to brake the movements of the switch.
Patent GB-1442681-A (GB)
Title: Process for the preparation of polypropylene
Inventor: KUEGLER FRANZ DR
IPC: C08K5/00
Filed: 1973-07-12
Abstract: 1442681 Treating polypropylene CHEMIE LINZ AG 12 July 1973 [25 July 1972] 33384/73 Heading C3P Polypropylene having a narrow molecular weight distribution is prepared by treating fused polypropylene stabilized with a phenolic antioxidant and optionally a phenolic light stabilizer, with 0À005 to 0À5 weight per cent of a free radical forming agent selected from 2,5- dimethyl - 2,5 - di(t - butylperoxy)hexyne - 3, 1,3 - bis - (t - butylperoxyisopropyl) benzene, 3,3,6,6,9,9 - hexamethyl cyclo - 1,2,4,5, - tetraoxanonane, 2,5 - dimethyl - 2,5 - di(t-butylperoxy)hexane or a phthalide peroxide, for at least 10 seconds at 180‹ to 300‹ C. The antioxidant may be a pentaerythritol or octadecanol ester of 3,5-di-t-butyl-4-hydroxyphenylpropionic acid, 1,3,5-trimethyl-2,4,6-tri(3<SP>1</SP>,5<SP>1</SP>-di-tbutyl - 4<SP>1</SP> - hydroxyphenyl)benzene, 4 - hydroxymethyl - 2,6 - di - t - butylphenol, tris- (2<SP>1</SP> - methyl - 4<SP>1</SP> - hydroxy - 5<SP>1</SP> - t - butylphenyl)butane, 2,6 - di - t - butyl - pcresol, 3,5 - dimethyl - 4 - hydroxybenzyl glycolic acid stearyl ester or the 2 : 1 nickel complex of monoethyl 3,5-di-t-butyl-4-hydroxybenzyl phosphonate. The light stabilizer may be 2-(2<SP>1</SP>-hydroxy- 3<SP>1</SP>,5<SP>1</SP> - di - t - amylphenyl)benzotriazole, 2- (2<SP>1</SP> - hydroxy - 3<SP>1</SP>,5<SP>1</SP> - di - t - butylphenyl) - 5- chlorobenzotriazole or 2 - hydroxy - 4 - noctoxybenzophenone. Synergistic sulphur containing stabilizers, e.g. distearyl and dilauryl thiodipropionates, may also be present. The reaction may be effected in a screw injection moulding machine or kneader.
Patent GB-489146-A (GB)
Title: Improvements in or relating to a device for recording and reproducing gramophone records
IPC: G11B19/265
Filed: 1937-12-02
Abstract: 489,146. Recording and reproducing sound; variable-speed gearing. TIELAND, J. H. Dec. 2, 1937, No. 33415. Convention date, Dec. 7, 1936. [Class 40 (ii)] [Also in Group XXIV] A turntable is rotated at a speed dependent on the position of the needle in its path, e.g. at a constant linear speed, by a constant speed motor driving a differential gear of which one secondary shaft is connected to the turntable and the other to a speed governor. The motor 1, drives, by a worm 2, a differential casing 3 within which are secondary bevels 8, 9 on shafts 10, 11. Shaft 11 drives, through gearing 19, 21, and a flexible coupling 23, the turntable shaft 24. At the top of this shaft a worm 35 drives a further shaft 36 which, through bevel gearing and threaded rod provides the sideways movement of the recording stylus support 29. The other secondary shaft of the differential gear drives, through worm gear 18, 20, a governor 27 having its speed control disc 28 of special cross section increasing towards the centre. The brake block 43 of the governor is moved towards the centre of its disc as the stylus moves towards the centre of the record by means of racks 38, 42 and pinions 39, 41. Thus as the stylus approaches the centre of the reoord the governor speed decreases and, by the action of the differential, the turntable speed increases. The turntable shaft is mounted in a tapered bearing 44 to provide sufficient friction to balance the initial braking action of block 43.
Patent GB-494801-A (GB)
Title: Antenna network particularly applicable to systems for radio guiding of moving vehicles
IPC: G01S1/02
Filed: 1937-12-03
Abstract: 494,801. Directive wireless systems. STANDARD TELEPHONES & CABLES, Ltd. Dec. 3, 1937, No. 33558. Convention date, Dec. 31, 1936. [Class 40 (v)] In a directional aerial system in which the radiation characteristic of a main aerial is oscillated by means of a plurality of conductors arranged to function alternately as directors and reflectors by changing the sign of ances are cancelled and the conductors have no directing influence during the switching period. In Fig. 1 a fixed radiation characteristic having a suitable front to rear ratio is produced by the main aerial A, the two directors D1, D2 and the reflector R1. The two conductors R2, D3 have the form B, B<1>, Fig. 2, and are each spaced a quarter wavelength from the aerial A and are caused to act alternately as reflectors and directors by relay switches R. When the switch R is open the conductor B, B<1> is inductive at the operating wavelength of the aerial A and acts as a reflector ; whereas when the switch R is closed the inductance L is short circuited and the conductor B, B<1> reacts as a capacity, giving the effect of a director. Owing to the retardation of the relays operating the switches R, the two conductors tend to operate simultaneously either as reflectors or directors during switching, thus causing a sudden change in the magnitude of the emitted radiation which is heard as a key click in the receiver. This is prevented by connecting the two conductors R2, D3 (shown as B, B<1>, C, C<1> in Fig. 8) at their electrical centres to a transmission line X,Y having a length equal to half a wavelength. The impedance of the conductor C, Cl seen from the end Y is an inductance and from the end X is a capacity. Under these conditions no current flows and the line does not modify the normal operation of the conductors. If the two conductors operate simultaneously as reflectors or directors during switching a current flows in the line X, Y and eliminates the effects of the two conductors thus eliminating key clicks. According to the Specification as open to inspection under Sect. 91 the phase of the transverse radiation may be maintained constant by feeding the lateral conductors and the phase of the longitudinal field is changed by making the main aerial A or its directors D1, D2 or reflector R1 of the form showing in Fig. 2, in which case the keyed conductors may be fed from the same source as the lateral conductors. The arrangement may also be used to vary the angle of transmission or reception of a directional system and a number of lateral systems may be provided to increase the number of possible angles. This subject-matter does not appear in the Specification as accepted.
Patent GB-287029-A (GB)
IPC: A45B1/00
Filed: 1927-07-07
Abstract: 287,029. Rieger, (nÚe Frech), C. March 28, 1927. [Convention date]. Addition to 277,299. Tripod stands.- The telescopic extensions 10 of the two channel semicircular legs 8 of the parent Specification are each provided with a rib 12, which lie side by side, as shown in Fig. 5, when the stand is collapsed to form a walking stick. Each extension 10 may also be formed with a groove 11 in which the rib 12 of the other extension engages. Blade springs, attached to the members 10, are provided with knobs to engage selectively holes in the legs 8. In order to guide the semi-circular channel member 7 and prevent its rotation, the stick portion 1 is provided with a semicircular sleeve 4<2>, or its equivalent, at its upper end and the lower end of the member 7 is formed as a tubular portion 7<1> which prevents complete withdrawal of the member 7 from the stick portion 1 by its abutment against the sleeve 4<2>. The member 7 is held in adjusted position by a spring catch 9.
Patent GB-1203285-A (GB)
Title: Copper compound-containing algicidal surfacing, and process
IPC: A01N25/26
Filed: 1967-07-21
Abstract: 1,203,285. Coating. MINNESOTA MINING & MFG. CO. 21 July, 1967 [22 July, 1966], No. 33737/67. Heading B2E. [Also in Division C4] Roofing granules or shingles and bituminous sheets for roofing or siding may be coated with an algicidal composition comprising an insoluble inorganic moisture permeable carrier, and at least 0.2% by wt. of an inorganic copper compound which is substantially insoluble in water but slightly soluble at a pH of 2-4, its solubility, together with the permeability of the carrier, being such that it is gradually leached out to provide a condition toxic to algae. The copper compound may be cuprous oxide Cu 2 O or bromide Cu 2 Br 2 . The carrier is preferably an alkali metal silicate mixed with a hydrous plastic clay and/or an acidic material to insolubilise the silicate on firing. In Ex. I nepheline syenite granules are first coated with an aqueous sodium silicate slurry containing TiO 2 , kaolin and a surfactant and fired at 950‹F, and then with a similar slurry containing also Cu 2 O and borax, and fired at 700‹F, the coated granules are treated with an oil and applied to an asphalt roofing shingle. In Ex. II Cu 2 Br 2  is substituted for the Cu 2 O and the granules are applied to asphalt shingles. In Ex. III granules as in I are first coated with an aqueous sodium silicate slurry containing kaolin, a surfactant and Cu 2 O and fired at 950‹F, and then with a similar slurry minus Cu 2 O but including TiO 2  and a cobalt blue stain, and fired at 910‹F, the coated granules are applied to asphalt shingles.
Patent GB-448183-A (GB)
Title: Process for the manufacture of physiologically active derivatives of cyclopentano-phenanthrol
IPC: C07J1/00
Filed: 1934-11-23
Abstract: Physiologically active saturated or unsaturated diketones are obtained by oxidation of either a ketocyclopentano-dimethyl-tetradecahydro- or dodecahydro-phenanthrol respectively.  In each case the phenanthrol has the hydroxy group at position 3 and the keto group at position 17.  The preferred oxidizing agent is chromic acid, but other agents may be used, for example, copper oxide.  The starting materials may be obtained by the action of a Grignard reagent on allo-pregnanolone followed by decomposition of the Grignard addition compound and oxidation of the unsaturated secondary-tertiary alcohol so produced, or by oxidation of sterols.  In examples: (1) an acetic acid solution of keto-cyclopentanodimethyltetradecahydrophenanthrol is oxidized with chromic acid at room temperature, and the corresponding saturated diketone precipitated with water and crystallized from dilute alcohol; (2) in a similar manner ketocyclopentanodimethyldodecahydrophenanthrol is oxidized to the corresponding unsaturated diketone; (3) a carbon tetrachloride solution of keto - cyclopentanodimethyldodecahydrophenanthrol is treated with bromine to protect the double bond in the nucleus, oxidized with acid potassium permanganate, and the compound debrominated to replace the double bond by treatment with zinc and acetic acid.  Samples have been furnished under Sect. 2 (5) of: (1) Androstendione made by chromic acid oxidation of dehydro-androsterone with intermediate protection of the double bond by bromine.  (2) The di-ketone obtained by chromic acid oxidation of androstenol-(3)-one-(17) with intermediate protection of the double bond by bromine.  (3) The di-ketone obtained from androstenolone by chromic acid oxidation with intermediate protection of the double bond by chlorine.  (4) The di-ketone obtained by chromic acid oxidation of androstenolone with intermediate protection of the double bond by hydrochloric acid. (5) The brominated androstenolone used to prepare sample (2) is oxidized by means of acid permanganate to yield the same di-ketone as was obtained according to sample (2). (6) Androstendione obtained by oxidation of androstenolone by fusion with powdered copper oxide without intermediate protection of the double bond.
Patent GB-1198312-A (GB)
Title: Corrosion Inhibiting Chemical Compositions
Inventor: POPPLEWELL ALAN FRANCIS
IPC: C11D7/34
Filed: 1967-07-22
Abstract: 1,198,312. Cleaning composition. GEIGY (UK) Ltd. July 19, 1968 [July 22, 1967], No.33809/67. Heading C7E. A composition for cleaning copper or its alloys and imparting tarnish-resistance thereto comprises an acidic material having a pK value of not more than 5‹0, thiourea, and benzotriazole or a copper-protecting derivative of benzotriazole. The said acidic material may be HC1, H 2  SO 4  sulphamic acid, citric acid, tartaric acid, or acetic acid, or a polyamino-polycarboxylic acid such as E.D.T.A. or hydroxyethyl ethylenediamine triacetic acid. The benzotriazole derivative may be a 5-alkyl benzotriazole derivative having from 2 to 20 C atoms in the alkyl group, or a 5- alkanolylamino-benzotriazole having 3 to 20 C atoms in the alkanoylamino group, or a bisbenzotriazole. The composition may contain 50- 80 wt. per cent acidic material, 0À1-30% thiourea, and 0À1-46À67% of benzotriazole (derivative), and preferably also up to 40% of surfactant, which may be a compound of formula ROSO 3 M where R is an aliphatic hydrocarbon group and M is alkali metal or ammonium, or which surfactant may be an alkali metal alkylbenzene sulphonate or an alkali metal salt of a secondary alkyl sulphate. Copper may be treated with an aqueous solution of the composition, or a solution in a suitable inert carrier, or else the composition may be impregnated into a paper, or formulated into a paste for rubbing the surface. The paste may contain a mild abrasive such as 325 mesh diatomaceous earth or silica, and a softener such as ethylene glycol.
Patent GB-366976-A (GB)
Title: Improvements in or relating to corsets
IPC: A41C1/08
Filed: 1930-11-10
Abstract: 366,976. Corsets. HAWES, G. E. and LA RESISTA CORSET CO., 34, Norman Street, Bridgeport, Connecticut, U.S.A. Nov. 10, 1930, No. 33810. [Class 141.] A corset has a back portion comprising upper and lower parts which are capable of telescoping on one another as the wearer assumes sitting or standing postures. In the form shown in the drawing, the corset has overlapping laterally-arranged sections 10 .. 13 which are capable of being moved over one another. The sections are provided with corresponding stiffeners arranged so that the stiffeners in one section do not register with those in the adjacent section. Vertically -arranged elastic sections 14, 15 are arranged at the ends of the overlapping sections, and are arranged to expand laterally but not vertically. The lower section lap under or over the upper section, and the sections may be interconnected by stretchable fabric.
Patent GB-300911-A (GB)
Title: Improvements relating to the manufacture of insulated plates of magnetic material for electrical purposes
IPC: H01F1/18
Filed: 1928-11-19
Abstract: 300,911. Associated Electrical Industries, Ltd., (formerly Metropolitan- Vickers Electrical Co., Ltd.), (Assignees of Gross. J. E.). Nov. 19, 1927, [Convention date]. Insulation; electromagnets. - Core plates for dynamo-electric machines and transformers, or similar magnetic plates' with an adherent insulating film, are coated with an aqueous solution of sodium silicate and one or more carbohydrate compounds or glycerine, with or without the addition of a filling material. The sodium silicate solution preferably has a specific gravity between 1.15 and 1.3 and for the carbohydrate ingredient sugar, starch or dextrin may be used. An example consists of 45 parts of sodium silicate, 10 parts sugar and 60 parts water. When the plates are annealed after the coating has been applied, the carbohydrates break down and prevent the adhesion between the plates which would result from fusion of the silicate if this were used alone. As filling materials, talc, silica clays, magnesia, mica and insulating oxides, such as those of iron, aluminium and magnesia may be employed. The coating solution is applied by spraying, dipping or painting and the baking is preferably effected on a conveyer which carries the sheets in about 25 seconds through an oven so arranged as to give a uniform temperature gradient up to between 125‹ C. and 150‹ C. at the back of the oven.
Patent GB-188568-A (GB)
Title: Improvements relating to shoes for horses and other animals
IPC: A01L7/02
Filed: 1921-12-16
Abstract: 188,568. Ingram, W. H. Dec. 16, 1921. Renewable treads.-A rubber tread for horseshoes has flanges 4 which are forced under hook shaped flanges 2 formed on the iron shoe. The flanges on the shoe extend round the ends of the pad and may be hook-shaped at the end portions 7, Fig. 6, as elsewhere. The tread may extend as at 9, Fig. 6, over the shoe flanges 7. A tool having two arms pivoted together and with curved or hooked ends may be used in inserting the treads.
Patent GB-1305328-A (GB)
IPC: F16H21/04
Filed: 1971-07-20
Abstract: 1305328 Linkwork CONCRETE FORMWORK ENGS PTY Ltd 20 July 1971 [21 July 1970] 33907/71 Heading F2K A vertically adjustable work loaded platform 20 is supported on a spaced pair of interconnected lazy-tongs linkages mounted on a power driven steerable stripping trolley 10 used for the removal of concrete formwork used in the construction of reinforced concrete floors in buildings, the lazy-tongs linkages being pivotally connected by links 24 to the trolley at 22 and being extended, or retracted, by a horizontally arranged hydraulic ram 56 operating, via a carriage 62 roller mounted at 64 in the trolley, on the lower end of sliding links 26, the pivotal connection points 36 of the first pair of links 24, 26, being at a point more than half the length of said links 24, 26 from their said lower connections to the trolley and being offset upwardly from the end connecting points of these links 24, 26 to increase the distance between the pivot point 36 and the line of action X of the hydraulic ram and thus increase the mechanical advantage of the linkwork to thereby reduce the ram load necessary to raise, or lower, the loaded platform when operating in the collapsed zone of the lazy-tongs linkwork. The upper pair of crossed links 30, 32, which are not connected to each other, are pivotally connected at 46 to the ends of the lower links 24, 26 and additionally, connected by tension tie links 44 to these links 24, 26, the upper ends of the links 30, 32 being slidably and pivotally connected to the platform support frame 48.
Patent GB-1519657-A (GB)
Title: Method of producing aminated silica compounds
IPC: B01J20/32
Filed: 1976-08-14
Abstract: 1519657 Aminated silica compounds INST FIZICHE KHIMII IMENI L V PISARZHEV AKAD NAUK UKRAIN SSR and KIEV FILIAL N I INST REZINOVYKH I LATEXNYKH IZDELY 14 Aug 1976 33924/76 Heading C1A [Also in Division C5] Silica is heated at 200-500‹ C. in the absence of moisture and oxygen, cooled to 100-250‹ C. and contacted with an amino-alcohol or aminophenol at this temperature to form aminated silica compounds (with a concentration of grafted amino-groups of up to 1À2 mmol g<SP>-1</SP> SiO 2 ). Suitable forms of starting material are pyrogenic silica, silica gel, and crystalline modifications of silica. Suitable amino-alcohols include mono-, di-, and tri-ethanolamines and p-amino phenol. The products of the invention can be used as selective adsorbents, thickeners for lubricants and adhesives, fillers in polymers, non-swelling ion-exchangers, cross-linking agents in epoxy resins, and liquid-phase carriers in gas-chromatography.
Patent GB-387466-A (GB)
Title: Improvements in stair carpet holders
IPC: A47G27/06
Filed: 1931-12-08
Abstract: 387,466. Stair-carpet fasteners. PERRY, E. S., Cole Valley Works, Sarehole Road, Hall Green, Birmingham. Dec. 8, 1931, No. 33972. [Class 52 (v).] An angle bracket a fits into the angle between the stair and the riser and has inturned flanges a2 or pressed out tongues forming guides for a complementary V-member bl which forms the hooked or inturned finger of the carpet fastener b. The guideways a<3> may be inclined to provide a wedging action or if they are straight the friction of the arm b with the carpet holds said arm in position.
Patent GB-1144178-A (GB)
Title: Improvements relating to the cutting of notched specimen bars
Inventor: ROBERTS THOMAS MARMADUKE
IPC: B23D37/06
Filed: 1966-07-28
Abstract: 1,144,178. Broaching. WELDING INSTITUTE. 26 July, 1967 [28 July, 1966], No. 33998/66. Heading B3L. In apparatus for forming a notch in a specimen for a mechanical test, the specimen 16 is clamped on a horizontal surface 10 adjacent a hole 21 through which there passes a broach 20 mounted at its lower end on a crosshead 23 and guided by a groove 34 in a block 15. The crosshead 23 is movable on guide pillars 24 by the action of rotary lead screws 26 which are driven from a motor 30 through gears 29, 28. The clamping means (Fig. 3), comprise a toggle mechanism 11 operating on an equalizing bar 13 which in turn bears against a pair of spring-loaded pins 13 which are guided by a block 15 and which bear directly on the workpiece 16. Bellows 27 protect the lead screws 26. Microswitches operable by the edge of the crosshead limit the travel thereof.