baber/WOPTO huggingface dataset:
Patent GB-1320423-A (GB)
Title: Use of rubber crumbs for imparting elastic properties to mixtures  or mortar compositions containing cross-linking agents aggregates  and hydraulic binders
IPC: C04B26/02
Filed: 1971-04-19
Abstract: 1320423 Settable composition METALLGESELLSOHAFT AG 19 April 1971 [25 April 1970] 26126/71 Heading C1H [Also in Division C3] A settable composition contains hydraulic binder, e.g. Portland cement, sand, rubber crumbs having a particle size between 1 and 2 millimetres; a filler comprising silicon carbide or corundum meal; an antiframing agent, e.g. butyl alcohol or silicone oil; and inorganic oxides as pigments.
Patent GB-621477-A (GB)
Title: Improvements in or relating to amino acids
IPC: C07C227/16
Filed: 1945-10-08
Abstract: Compounds of the general formula RR1CH.C(CN)(COOAlk)(NH.A), wherein R is a monovalent organic group not attacked by alkaline condensing agents, R1 is hydrogen or an alkyl group of not more than 6 carbon atoms, A is a carboxylic acyl group of not more than 4 carbon atoms and Alk is an alkyl group containing not more than 3 carbon atoms are obtained by condensing an ester of a lower acylaminocyanoacetic acid with a nontertiary organic halide containing the groups R and R1, other than a 4-(halomethyl)-imidazole where R1 is hydrogen, in the presence of an alkaline condensing agent.  The compounds obtained may be converted to a -amino acids by hydrolysing and decarboxylating by treatment with dilute aqueous alkali or with a strong acid.  The halogen compound RR1CHX may be either primary or secondary, e.g. ethyl iodide or isopropyl bromide, the group R may be heterocyclic, aryl, alkyl or unsaturated alkyl or alkenyl and may contain interrupting hetero atoms, e.g. sulphur in b -methyl mercaptoethyl. The alkaline condensing agents may be any of the alkali metal or alkaline earth metal alcoholates or alkoxides, alkali metals, alkali metal amides, and alkali metal triarylmethides.  In examples, ethyl cyanoaceturate in a solution of sodium in dry ethanol is condensed with: (1) b -chloroethyl methyl sulphide and the ethyl 2 - acetamido - 2 - cyano - 4 - methylmercapto butyrate produced is refluxed with sodium hydroxide solution to obtain methionine; (2) with benzyl chloride, ethyl 2-acetamido-2-cyano-3-phenyl propionate is formed and on refluxing with hydrobromic acid or with an aqueous solution of sodium hydroxide, phenylalamine is obtained; (3) with methallyl chloride, the product is ethyl 2-acetamido-2-cyano-4-methyl-4-pentenoate and this is refluxed with an aqueous solution of sodium hydroxide to yield methallylglycine; (4) with allyl bromide, ethyl 2-acetamido-2-cyano-4-pentenoate being produced and then converted to allyl glycine by refluxing with sodium hydroxide solution as in (3); (5) with isopropyl bromide, the ethyl 2 - acetamido - 2 - cyano - 3 - methyl butyrate obtained being then refluxed with hydrobromic acid or with an aqueous solution of sodium hydroxide to yield valine; (6) with ethyl iodide, the ethyl-2-acetamido-2-cyano-butyrate produced is then refluxed with hydrobromic acid to yield a -aminobutyric acid.  It is stated that the acylamino cyanoacetic ester may have the acyl group of formic, acetic, propionic or butyric acids and that the esters are those of methyl, ethyl, propyl or isopropyl alcohol.  Specification 599,481 is referred to.
Patent GB-1332760-A (GB)
Title: Household implement
IPC: B67B7/50
Filed: 1972-06-05
Abstract: 1332760 Wrench; screwdriver C E THOMPSON 5 June 1972 [9 June 1971] 26158/72 Heading B3N [Also in Division B8] A strip metal can piercer is additionally pro-  vided with an aperture having stepped side edges 44-50 and one or more hexagonal openings 52 to permit the use of the piercer as a wrench. A screwdriver bit 54 is provided at one end. A sharp edged opening 70 and a notch 64 may be used for chamfering pieces of wood and cutting string respectively.
Patent GB-634772-A (GB)
Title: Improvements in or relating to frequency transporting devices
IPC: H03B21/04
Filed: 1945-11-30
Abstract: 634,772. Automatic frequency control systems. SOC. INDEPENDANTE DE TELEGRAPHIE SANS FIL. Nov. 30, 1945, No. 26227/48. Convention date, Sept. 15, 1944. Divided out of 606,910, [Group XXXVI]. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 21, 1946.] [Class 38 (iv)] An oscillator covering a wide frequency range comprises a crystal controlled oscillator Q feeding through a harmonic selector A<1> a frequency changer C<1> also supplied from a local oscillator H. The output is fed through a tunable filter MF<1> to a second frequency changer C<2> fed from an " interpolation " oscillator I, the output passing through a fixed filter MF2 to control the frequency of the local oscillator H. Preferably the controls of the harmonic selector and local oscillator are ganged, also the filter MF<1> and oscillator I.
Patent GB-929392-A (GB)
Title: Cyclopentadienyl cobalt cyclopentadiene compounds
IPC: F02B3/06
Filed: 1959-07-31
Abstract: Compounds of formula (p -Cy)Co(C5H5X) where (p -Cy) is a cyclopentadienyl or indenyl radical and (C5H5X) is a cyclopentadiene molecule in which X is hydrogen, deuterium, a C1-C10 alkyl group, a C6-C10 aryl group or a mono- or di-halosubstituted C1-C10 alkyl or C6-C10 group may be added to gasoline, jet fuels or diesel fuels. The gasoline may also contain tetraethyl lead or other anti-knock agents and scavengers such as ethylenedichloride and ethylenedibromide.  A typical compound is cyclopentadienyl cobalt cyclopentadiene.ALSO:The invention comprises cyclopentadienyl cobalt cyclopentadiene compounds of formula (p -Cy)CO(C5H5X) when (p -Cy) is a cyclopentadienyl or indenyl radical, and (C5H5X) is a cyclopentadiene molecule in which X is hydrogen, deuterium, a C1-C10 alkyl group, a C6-C10 aryl group, or a mono- or di-halosubstituted C1-C10 alkyl or C6-C10 aryl group.  Specified compounds include cyclopentadienyl cobalt cyclopentadiene, cyclopentadienyl cobalt deuterocyclopentadiene, methylcyclopentadienyl cobalt methylcyclopentadiene, cyclopentadienyl cobalt- 1-endomethylcyclopentadiene, and cyclopentadienyl cobalt 1-endodichloromethylcyclopentadiene.  The term 'endo' is used throughout the specification with a particular meaning which is defined therein, and not in the conventional sense of a bridging group.  They may be prepared by:  (1) reacting a bis(p -Cy) cobalt cation with a reducing agent such as sodium borohydride and lithium aluminium in the presence of a neutral solvent;  (2) reacting a bis(p -Cy) cobalt compound with an organic halide such as methyl iodide, ethyl bromide, butyl iodide, phenyl iodide and ethylphenyl bromide; or  (3) reacting perhalo alkyl-substituted compounds such as (p -Cy) cobalt 1-endotrihalomethylcyclopentadiene with a reducing agent. Reactions (1) and (2) may be carried out in the presence of a solvent such as hexane, heptane, octane, tetrahydrofuran, dioxane, ethyleneglycol dimethyl and dibutyl ethers and diethylene glycol dimethyl, diethyl and dibutyl ethers.  Reactions (1), (2) and (3) may be carried out under an inert blanketing gas such as nitrogen, argon, krypton or neon.ALSO:Cobalt may be deposited on glass, glass cloth, resins and other insulating supports by the thermal decomposition in an inert gas e.g. argon of a compound of formula (p -Cy)CO(C5H5X) where (p -Cy) is a cyclopentadienyl or indenyl radical and (C5H5X) is a cyclopentadiene molecule in which X is hydrogen, deuterium, a C1-C10 alkyl group, a C6-C10 alkyl or C6-C10 aryl group, such as cyclopentadienyl cobalt cyclopentadiene.
Patent GB-601503-A (GB)
Title: Improvements in bottom bearings for sensitive metering apparatus, such as electricity meters
IPC: F16C19/12
Filed: 1945-10-09
Abstract: 601,503. Bearings. LANDIS & GYR SOC. ANON. Oct. 9, 1945, No. 26353. Convention date, Oct. 18, 1944. [Class 12 (i)] A bottom bearing for sensitive metering apparatus such as electricity meters comprises upper and lower cup members 6, 12 with two balls 13 situated therebetween and arranged side by side. The upper cup 6 is shown as carried by a short stub spindle 2 into a socket of which is inserted a taper end of the meter spindle 1. The lower cup 12 is held in a sleeve 7 by which the whole bearing assembly is mounted in a base-plate. This sleeve 7 has a flanged top 8 and an inner ring 9 of some width held therein by a spring ring 10; this wide ring 9 supports the stub spindle 2 in the event of excessive lateral movement, while the flange 8 serves in conjunction with a collar 3 on the stub spindle to retain the stub spindle in the sleeve mounting and to prevent the stub spindle 2 being raised to such an extent as to release the balls 13.
Patent GB-438990-A (GB)
Title: Improvements in and relating to ophthalmoscopes and other like instruments
IPC: A61B3/12
Filed: 1934-09-13
Abstract: 438,990. Ophthalmoscopes &c. GOWLLAND, G. P., Morland Road, Croydon. Sept. 13, 1934, No. 26356. [Class 97 (i)] [See also Group XI] In an ophthalmoscope or other instrument having a casing or handle which is normally used to contain a dry battery, a transformer is provided to take the place of the battery so that the lamp within the ophthalmoscope &c. can be illuminated by connecting the transformer primary to the mains. The transformer b fits within the casing a<1> and is retained in position by a conical spring d<1> within the removable end cap a<2>. The spring d<1> also forms one of the connections for the secondary winding of the transformer, the other connection consisting of a stud b<1> making contact with the lamp. The spring d<1> is formed integrally with a spring d passing through an aperture in the cap a<2> and surrounding the flex c by which the transformer primary is connected to the mains.
Patent GB-413148-A (GB)
Title: Improvements in containers for dispensing measured quantities of granulated or powdered substances
IPC: G01F11/26
Filed: 1933-09-26
Abstract: 413,148. Delivering measured quantities of powdered materials. FLANAGAN, J. A., Kilenagh, Moyvalley, Co. Kildare, Irish Free State. Sept. 26, 1933, No. 26447. [Class 106 (v).] A container adapted to deliver a measured quantity of powder or granular material when inverted comprises a central discharge tube 2 whose bell-shaped lower end extends into a measuring chamber 3 with straight, sloping sides situated in the bottom of the container. The tube is tapered and its lower end rests on stilts 10, i.e. wires or extensions of the tube, whilst its upper end passes through the cover 5 which may be rigidly attached to the tube or rest on a shoulder 11 thereon. A filling funnel 8 and closure caps 12, 13 for the tube and funnel respectively are provided, and the cover may be removable or fixed on or integral with the container, and in the latter case, the bottom is made removable. The container and tube are made of glass &c.
Patent GB-790196-A (GB)
Title: Catalyst for the polymerization of olefins
IPC: C08F2/00
Filed: 1954-01-15
Abstract: A polymerization catalyst is prepared by depositing chromium oxide on silica, alumina, or silica-alumina and heating the resulting composite at an elevated temperature in a substantially anhydrous, sufficiently non-reducing atmosphere to obtain an activated composite in which at least part of the chromium is hexavalent.  The heating may be carried out at 750-1500 DEG  F. in dry air for 3-10 hours. Variation of the heating temperature results in differing ratios of hexavalent chromium to total chromium in the catalyst and the production of polymers of differing molecular weight.  The carrier may be impregnated with 0.1-10 per cent of chromium, using aqueous solutions of chromium nitrate, chloride, trioxide, or sulphate. Carriers specified are silica gel, alumina gel, silica-alumina gels of varying composition, H.F.-treated alumina gel, bauxite and silicaalumina containing zirconia or chromium oxide.  Silica-alumina gel carrier may be activated by heating for 4-15 hours at 1100-1300 DEG  F. in a mixture of steam and air.  Experiments are described in which mixtures of propylene, propane and isopentane, and of ethylene and isooctane, are polymerized, using catalysts in which variations are made in the chromium content, the carrier, the chromium compound used for impregnation, and the activation temperature.ALSO:Olefines are polymerized in the presence of a catalyst prepared by depositing chromium oxide on silica, alumina, or silica-alumina and heating the resulting composite at an elevated temperature in a substantially anhydrous, sufficiently non-reducing atmosphere to obtain an activated composite in which at least part of the chromium is hexavalent.  Variation of the heating temperature results in differing ratios of hexavalent chromium to total chromium in the catalyst and the production of polymers of differing molecular weights.  Experiments are described in which feed mixtures of propylene (12 mol. per cent), propane (13 mol. per cent) and isopentane (75 mol. per cent) and of ethylene (3 per cent) and iso-octane (97 per cent) are polymerized.
Patent GB-216045-A (GB)
Title: Improvements in air tubes for pneumatic tyres
IPC: B60C5/04
Filed: 1923-10-24
Abstract: 216,045. Whiteway, A., and Macintosh & Co., Ltd., C. Oct. 24, 1923. Air tubes.-An air tube is formed of two layers a, b of different rubber mixtures vulcanized together, the outer layer b being harder and tougher than the layer a and of gradually increasing thickness towards the tread.
Patent GB-329594-A (GB)
Title: Improvements in and connected with infant feeding devices
IPC: A61M1/06
Filed: 1929-09-02
Abstract: 329,594. Lindquist, E. V. Sept. 2, 1929. Breast pumps.-A device, preferably of glass, for assisting mothers in infant feeding comprises a suction bell 4 adapted to be placed over the breast, characterized in that the suction bell has attached to it a tube 7 connected to a supplementary suction device 2, whereby the mother exerts a sucking effect with the mouth. The suction apparatus, which contains a oneway valve 13, is connected to the suction bell by means of a rubber tube 3. Saliva, formed by the mother, cannot come in contact with the milk, but is collected in the widened part 10. The milk flows into the widened tube 6, so that suckling of the child easily takes place.
Patent GB-866100-A (GB)
Title: Improvements in or relating to interferometer optical systems
IPC: G01B9/02
Filed: 1957-08-23
Abstract: 866,100. Photo-electric position determination. LINK AVIATION Inc. Aug. 23, 1957 [Sept. 12, 1956], No. 26710/57. Class 40(3) [Also in Group XX] In an interferometer for measuring the movement of a measuring head 10 relative to an anvil 11, collimated light from a source 1 is split at 4 into two beams 6, 8 which are reflected by prisms 7, 9 before re-combination at 12. On plate 4 is a coating 5 producing a #/4 phase   difference between the two halves of split beam 6, # being a selected wavelength, to cause interference in each half 13, 14 of the re-combined beam. Thus, as prism 7 attached to measuring head 10 moves, the intensity of each half beam 13, 14 varies cyclically, the variation in half beam 13 lagging or leading that of half beam 14 according to the direction of the movement of prism 7 and head 10. To measure this movement, the beam 13, 14 is passed through prism 15 and dividing lenses 16 so that the two halfbeams of the selected wavelength pass through apertures in plate 17 on to photo-tubes 18, 19 respectively. The out of phase outputs of these tubes are fed through amplifiers 32, 33, triggers 34, 35 and inverters 36, 37 to a reversible electronic counter 38 which records the number of complete cycles in the intensity variations, this number being commensurate with the distance moved by measuring head 10. Fractions of cycles are measured by a cathode-ray tube 44 to which the photo-tube outputs are also fed via amplifiers 40, 47 and inverters 42, 43. U.S.A. Specification 2,604,004 is referred to.
Patent GB-616475-A (GB)
Title: Improvements in and relating to closure devices for barrels and other containers
IPC: B65D39/08
Filed: 1946-09-05
Abstract: 616,475. Venting casks. HAMER, A. Sept. 5, 1946, No. 26732. [Class 21] A closure device for barrels comprises a bush A and a bung D carrying an adjustable member K having grooves K2 for the admission of air. The bush A is threaded to screw into the barrel and has internal helical grooves F which are engaged by projections E on the bung. A rubber ring G carried in a groove in the bung D forms a seal when the bung is screwed home. The bung has a recessed and threaded bore to accommodate the member K which may be screwed down against a rubber washer K<4> to seal the barrel or may be unscrewed to expose the axial grooves K<2>. In an alternative form the bung may be threaded to hold the correspondingly threaded ring G. A projection H on the bung is shaped to be engaged by a spanner. Specification 446,020 is referred to.
Patent GB-301889-A (GB)
IPC: G03B9/16
Filed: 1928-09-18
Abstract: 301,889. I. G. Farbenindustrie Akt.- Ges. Dec. 9, 1927, [Convention date]. Shutters.-In a shutter comprising two pivoted blades which move in succession past the objective, the lagging blade is pivoted on the leading blade eccentrically to the pivot of the latter. The blade 3 is mounted on a pivot 2, and the blade 4 is mounted on an eccentric pivot 5 on the blade 3. When the blades are tensioned by the levers 9, 10, 11, a projection 12 on the blade 4 is brought into engagement with the end 15 of a locking-lever 14 controlled by a spring 17. On releasing the shutter, the blade 3 turns downwardly, and the consequent downward movement of the pivot 5 subsequently releases the blade 4 from the lever 14. The position of the lever 14 can be adjusted to vary the exposure by a pin 18 movable in a slot 19. The spring 7 controlling the return movement of the blade 4 is weaker than the spring 6 for the blade 3.
Patent GB-782549-A (GB)
Title: Electrostatic transducer
IPC: H04R19/02
Filed: 1955-09-19
Abstract: 782,549. Electrostatic loud-speakers. JANSZEN; A. A. Sept. 19, 1955 [June 21, 1955], No. 26786/55. Class 40 (4). An electrostatic loud-speaker comprises a diaphragm 20 supported under tension by the margins of a pair of insulating frames 12, 14, and grids of parallel wires 24 on opposite sides of the diaphragm secured at one end only to a bus-bar 28 or 30, respectively, the other ends of the wires being free to move under variations of temperature. The wires are enclosed in sheaths 26 of rubber-like material which are cemented into grooves 22 in vertical webs 18 of the frame, the wires being thus spaced about 0.01 inch from the diaphragm. The horizontal webs 16 of the frame grip the diaphragm 20 and at certain junctions of the webs 16, 18 the frames are held together by pins 52 which pass through the diaphragm. The busbars 28, 30 are at opposite ends of the loudspeaker and are connected to input terminals 34, 36. The diaphragm is a thin sheet of vinylidene chloride coated on both sides with graphite. The tension of the diaphragm is varied while subjected to a predetermined acoustic frequency until it resonates before being clamped between the cemented faces of the frames. A polarizing voltage of about 1000 is applied across the electrodes by the circuit shown in Fig. 8. Mains voltage is transformed at 70, rectified at 72, 74 and applied to the midpoint of the secondary of the coupling transformer 80 and to the diaphragm through resistor 82. If two or more speakers are used additional resistors 84 are inserted. The current used is very small. An amplifier feeds a filter circuit 86, 88, 90 with a lower cut-off of 800-1000 c/s. Values are given for the components. A number of the speakers 62 may be arranged in a corner cabinet 60, Fig. 7, which also includes an amplifier and cross-over network. The prior state of the art is represented by a reference to U.S.A. Specification 2,631,196.
Patent GB-1517955-A (GB)
Title: Method of applying a tension to a pipeline during construction and daying thereof
IPC: F16L1/16
Filed: 1975-06-24
Abstract: 1517955 Laying pipelines under water H N EAGLETON J D LORMAND and J S HERRING 4 Aug 1976 [24 June 1975] 26787/75 Heading F2P To prevent damage to e.g. a coated pipeline 16a during laying under water 54 from a lay barge 50, especially in the region of the bend 66 near the bottom surface 52, tension greater than a predetermined minimum is induced in at least the bend portion 66 by internal pressurization, e.g. using air. Two pigs, of which one 12b is shown diagrammatically, are sealable within the pipeline 16a and maintain the air pressure in the bend portion 66 and to the rear of it, i.e. in the already-laid portion 62, and are progressively moved forwards as more pipe is laid. Air may be supplied from a drilling platform 58 or another barge, e.g. via a valve 60 and riser 56 connected to the rear end of the pipeline 16a; alternatively the rear end of the pipeline 16a may be closed and pressure supplied from the front end of the pipeline 16a, through the pigs, or from a source within one of the pigs. In use the rear pig is sealed and the forwards one moved forwards progressively as more pipe is laid, with or without pressurization of the space between the pigs, and the rear one moved forwards as necessary to maintain pressure in the desired region. The pigs may be connected or separate and may be directly or remotely controlled; they may also be suitably valved for different applications.
Patent GB-1513907-A (GB)
Title: Electrical coupling for shielded-arc welding cable
IPC: B23K9/32
Filed: 1975-06-24
Abstract: 1513907 Two part couplings INSTITUT PO SAVARJAVANE 24 June 1975 [25 June 1974] 26844/75 Heading H2E [Also in Division B3R] An electrical connector for a cable of a shielded arc welding apparatus has main current carrying electrodes 1, 10 with rounded mating portions, e.g. a hemisphere and conical recess, a central duct which accepts a consumable electrode and shielding gas and pin and socket connectors 7, 11 mounted in and insulated from the main electrodes for carrying control information. A pin 8 relieves the pin and socket connectors from mechanical loading and the central duct may be lined with a coiled wire or plastic guide 24. Seal 20 prevents gas escaping.
Patent GB-713101-A (GB)
Title: Improvements in razor blade holders
IPC: B26B5/00
Filed: 1951-11-16
Abstract: 713,101. Knives; razors. ALORIX, Ltd., and LUBBUCK, I. Oct. 6, 1952 [Nov. 16, 1951; Dec. 6, 1951], Nos. 26846/51 and 28631/51. Class 30 [Also in Group XXIII] A device for holding a razor blade for use as a knife comprises a jaw plate 1 integral with a handle 2 and having projection 3 adapted to engage in corresponding apertures in the blade 4, and a shorter jaw plate 5, having recesses 7 to receive the projections 3, connected to the jaw plate 1 by means of a hinge pin 6 such that the jaw plate 5 can be swung upwards away from the jaw plate 1 as well as swung from side to side; a resilient split sleeve 8 is slidable between an engaged position in which is embraces both jaw plates to hold them together and a disengaged position in which it embraces the part 9 of the jaw plate 1 projecting beyond the jaw plate 5. The part 9 has an upstanding projection 10 to limit outward movement of the sleeve 8. The side. edges of the jaw plates converge very slightly away from the handle; the sleeve may have a corresponding internal taper, and may be provided with a projecting portion to facilitate operation by the fingers of the user. The hinge may be formed by a tongue integral with one end of the movable jaw plate and engaged in a hole or slot in the adjacent end of the other jaw plate. The handle may be at right-angles to the jaw plate 1; it may be slidable with respect to the jaw plates, the sleeve 8 being movable with it. The Provisional Specifications refer to razors.