baber/WOPTO huggingface dataset:
Patent GB-513265-A (GB)
Title: Improvements in or relating to compositions comprising silicon carbide
IPC: C04B35/573
Filed: 1938-03-07
Abstract: 513,265. Resistances; thermo-electric batteries. TENNANT, W. J. (Carborundum Co.). March 7, 1938, No. 7132. Drawings to Specification. [Classes 37 and 53] [Also in Groups III and V] Articles, composed primarily of silicon carbide, are made by shaping the article from a workable mixture of finely divided carbon and carbonizable binding material, placing the article in contact with elemental silicon and heating to a temperature sufficient to cause a rapid impregnation of the silicon into the pores of the article to form silicon carbide. The materials are heated rapidly to a temperature above 1,800‹C. for a period which may be less than 5 minutes. Excess of silicon is employed and there may be more than 20 per cent. of uncombined silicon in the completed article. The carbonaceous mixture is formed from carbon, such as lamp black, charcoal or graphite, together with carbonizable materials such as grain flour, molasses, casein glue, wood flour, linseed oil. The product consists of a reticular framework of silicon carbide containing silicon or silicon rich material in its interstices. The silicon carbide exhibits a cubic structure under X-ray diffraction examination. The material produced is suitable for electrical resistors, electrodes etc.; it may be used for producing " cold ends " for silicon carbide resistors made by methods other than that described. The mix from which the material is produced is adapted for extrusion and may be made into the form of a helix of small diameter. A bar of the material heated asymetrically, i.e., not midway between its ends, shows thermoelectric effects and may be combined with another material giving an additional thermoelectric effect. Specifications 6693/05 and 23550/10, [both in Class 1], are referred to.
Patent GB-574217-A (GB)
Title: Improvements in or relating to moulding materials
IPC: C08L91/00
Filed: 1942-05-29
Abstract: 574,217. Compound fabrics; impregnated paper and woven fabrics. KREMER, H. May 29, 1942, No. 7332. Addition to 542,966, [Group V]. [Classes 96 and 140] A mouldable material of the kind described in the parent Specification is prepared by the use of a filler in sheet form, e.g., a woven material such as linen or a fibrous material such as paper. The sheets are coated or impregnated in succession with two different mouldable materials; the first being applied in such amount that the intermediate product is mouldable. One coating may contain blood or products of blood, e.g., the rubber composition described in the parent Specification and the other a stage A phenolic resin or other syntheic resin. The treated sheets may be superposed and pressed to form laminated sheets or boards. Specification 430,953 is referred to. Reference has been directed by the Comptroller to Specifications 514,703, [Group IV], and 544,116.
Patent GB-231315-A (GB)
Title: Cork products and the manufacture thereof
IPC: B27N3/02
Filed: 1924-03-24
Abstract: 231,315. Vincke, E. March 24, 1924. Cork, treating.-A compressed cork product is formed by stripping the bark from natural cork which is then cut into thin paper-like sheets, the sheets being preferably cut along lines parallel to the layers of yearly growth. The sheets are then broken up or cut into scales of uniform size and the scales, preferably without the addition of cementitious matter, such as glue, gelatine, rubber, resin, linseed oils, or the like brought together in layers from six to twenty times the thickness of the finished product, the scales naturally tending to assume an overlapping face to face relationship. To increase this tendency, the support may be vibrated. To liberate the resinous components of the cork, the scales are then heated to a temperature of preferably, 575‹ F., and compressed to the thickness of the finished product. In the formation of a thin web or sheet, some of the volatile gases are allowed to escape directly from the surface of the sheet by interposing a fine-mesh wire cloth between the cork and one of the pressing plates. In order to solidify the resinous matter and firmly cement the cork flakes together, the product is cooled without removing the pressure.
Patent GB-1427291-A (GB)
Title: Electronic engraving system
IPC: B42D15/10
Filed: 1974-02-19
Abstract: 1427291 Credit cards and the like MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 Feb 1974 [22 Feb 1972 12 June 1973] 7488/74 Heading B6A [Also in Division H4] An identification card 1, Figs. 1, 2, may be formed with an engaved image of a person on a portion 7. The card 1 is formed of a white sheet 2 which may be covered with transparent protective layers 3, the portion 7 being covered with a coloured layer (e.g. black or blue) 4 which is selectively removed by the engraving process. The engraving may be carried out so as to ensure that a white strip (i.e. with all the coloured layer 4 removed) is formed adjacent two of the edges of the image even if the engraved image is not centred on portion 7. Signals derived by a television camera 402, Fig. 4 viewing a person 401 are fed via a oneframe memory 406 to. control an engraving unit 411. The system has three modes of operation, determined by a circuit 420, in the first of which the output signal from the camera 402 is continuously written into the memory 406 and read out of the memory 406, the output signal from. memory 406 being displayed on a television monitor 408; when the person 401 and camera 402 have been. adjusted to provide a desired picture on monitor 408 a button is depressed and the system operates in its second mode. In this mode memory 406 stores one frame of signals representing person 401, these signals also being displayed on monitor 408. In the third mode of operation the thus stored signals are read out of memory 406 at a lower rate and fed to engraving unit 411 to engrave the image of person 401 on the portion 7 of card 1.
Patent GB-975188-A (GB)
Title: Process for the cyanoethylation of lignocellulose pulp
IPC: H01B3/18
Filed: 1961-03-02
Abstract: Lignocellulose pulp is cyanoethylated by mixing approximately 100 parts by weight (dry basis) of pulp with 200 parts of water and 5 to 25 parts of an alkali-metal hydroxide, until the pulp is thoroughly wetted, adding 15-30 parts of acrylonitrile, mixing for approximately two hours at a temperature not above 25 DEG C. and stopping the reaction by dilution with water. Since the reaction is exothermic, cooling is necessary. Part of the water may be supplied as ice for this purpose. The pulp obtained may be washed with water, neutralized by, e.g. acetic acid, and again washed. The pulp treated may be, e.g. a kraft or rope pulp. Specifications 660,010 and 922,909 are referred to.ALSO:Paper and board are made from lignocellulose pulp cyanoethylated by mixing approximately 100 parts by weight (dry basis) of pulp with 200 parts of water and 5 to 25 parts of an alkali-metal hydroxide, until the pulp is thoroughly wetted, adding 15-30 parts of acrylonitrile, mixing for approximately two hours at a temperature not above 25 DEG C. and stopping the reaction by dilution with water.  Since the reaction is exothermic, cooling is necessary. Part of the water may be supplied as ice for this purpose.  The pulp obtained may be washed with water, neutralized by, e.g. acetic acid, and again washed. The pulp treated may be, e.g. a kraft or rope pulp. The treated pulp may be used to make paper or paperboard by standard equipment.  These papers have high dielectric constants. Specifications 660,010 and 922,909 are referred to.
Patent GB-890004-A (GB)
Title: Improvements in or relating to the production of polyester films
IPC: B29C71/00
Filed: 1960-03-04
Abstract: A polyester film is biaxially oriented by first elongating the film at 80 DEG -90 DEG C. in a direction transverse to its length to a stretch ratio beyond the point of inflection of the film, and then elongating the film at 90 DEG -160 DEG C. in its lengthwise direction to an extent necessary to orient the film in this direction.  The point of inflection of a film at a given stretching temperature is defined as that point where the curve of stretch ratio plotted against the stretching force begins a sharp incline upward away from the stretch ratio axis of the graph, or, when the curve shows a "yield point", that point where the curve again reaches and passes the maximum reached at the elastic limit.  The "yield point" is defined as the maximum force reached at the elastic limit, as shown in all stress-strain curves below a certain temperature.  In the case of amorphous polyethylene terephthalate film this temperature is 82 DEG C.  The film may be elongated in the transverse direction at880 DEG -82 DEG C. at a stretch ratio of 3,5 to 3,2.  The minimum stretch ratio in this direction at 82 DEG -90 DEG C. may be determined by the formula Sm=0,025T+1,25, wherein Sm is the minimum stretch ratio based on the original dimension and T is the temperature in degrees Centigrade.  The film may be lightly heat-set at 85 DEG -110 DEG C. immediately after the transverse elongation step.  The film may be elongated in the longitudinal direction by at least 3X, e.g. by 3X to 6X at 115 DEG -160 DEG C.  The biaxially oriented film may be heat-set at 135 DEG -250 DEG C.  The process minimizes or eliminates gauge variation in the transverse direction, e.g. reduces it to a level not exceeding 10%.  Up to 25 mol. per cent of the terephthalic acid residues in the polyester may be replaced by residues of other dicarboxylic acids, a number of which are specified, and up to 25 mol. per cent of the ethylene glycol residues in the polyester may be replaced by residues of other dihydroxy compounds, a number of which are also specified.  Specification 743,503 is referred to.
Patent GB-250214-A (GB)
Title: Improvements in brushes
IPC: A46D3/00
Filed: 1926-03-22
Abstract: 250,214. Withycombe, R. M. March 31, 1925, [Convention date]. Holders with recessed-back retaining-devices for brushes.-A brush comprises an elastic core provided with bristles or filaments and adapted to be inserted in a recess 4 in a handle 1, the. recess being slightly shorter in one dimension than the corresponding dimension of the core, so that the latter is arched on being inserted. The recess 4 may be undercut.
Patent GB-558088-A (GB)
Title: Filters, more especially for the air intake of aircraft engines
IPC: F02C7/042
Filed: 1942-06-11
Abstract: 558,088. Filtering air and gases. VOKES, C. G. June 11, 1942, No. 7901/43. Divided out of 558,081. [Class 8 (ii)] [Also in Groups XXVII and XXXIII] A removable filtering screen is provided for air or gas passing into a duct, and a seal adapted to seal the area normally occupied by the screen; movable means linked with the seal prevents removal of the screen except when the seal is in position. The filter unit such as a pleated screen in a frame 3 normally extends at an angle across the passage outside the engine intake duct 4 of an aircraft. The entry scoop 5 may have a false bottom 6, which is moved down when the filter unit is cut out by being swung round to occupy this base portion. In this position some air passes through the filter to an outlet 8, cleaning the filter. Air-directing vanes 9 are provided, which move with the filter and are flattened in the cut-out position. The filter is normally retained in position by a nose 16 ; when this is turned through a right angle, to release the filter for removal through the opening covered by the hinge flap 36, a bar 13 can pass into a slot 14 of an abutment 15, allowing a spring 12 to close the vanes 9. With the filter in place and the vanes open there is a small air flow between the vanes and along the filter to the outlet 8 by which dirt, rain and snow may escape. The filter may be put out of position and the false bottom 6 lowered to make room for it, by levers operated by a hydraulic jack' 20, which may be linked to the undercarriage or operated by the pilot. Fig. 8 shows a form in which filters 3 are disposed on each side of a passage which coacting vanes 9 may obstruct or leave clear. Air enters through the filters in the former case. Specifications 555,501, and 558,081 are referred to.
Patent GB-858326-A (GB)
Title: Antifoggants and stabilizers for photographic silver halide emulsions
IPC: H01M4/23
Filed: 1959-03-06
Abstract: Compounds having one of the formulae:  <FORM:0858326/IV(b)/1> or <FORM:0858326/IV(b)/2> wherein n is 1 to 3, R is an alkyl, hydroxyalkyl, carboxyalkyl, aryl, carboxyphenyl, sulphophenyl or aralkyl group or a cation such as hydrogen, sodium, potassium, silver or ammonium, and the side chain is joined in the 2- or 4- position of the heterocyclic ring, are prepared according to a method described in U.S.A. Specification 2,810,724 by addition of a mercapto acid HS,(CH2) n COOH to 2- or 4- vinylpyridine or quinoline in the presence of a polymerization inhibitor such as hydroquinone. The free acid so produced may be converted into its salts or esters by known methods.  An example is given of the reaction of mercapto-acetic acid with 4-vinyl-pyridine.
Patent GB-566959-A (GB)
Title: Improvements in tappet mechanism for actuating poppet or like valves for internal combustion and other engines
IPC: F01L1/25
Filed: 1944-06-16
Abstract: 566,959. Valve gear. HINDLE, T. June 16, 1944, No. 7924/43. [Class 7 (vi)] [Also in Group XXVI] A tappet rod for a poppet valve is divided into two parts f, p and the adjacent ends of the parts are disposed in a chamber g<1> to which oil is supplied under slight pressure past a non- return valve b disposed in a chamber f<2> within the cam follower f. Oil enters the chamber from the passage o through bores o<3> in the tappet guide, and an annular chamber o<2> and passages o<4> in the cam follower. Guides g2 prevent the cam follower from rotating. At low engine speeds, the leakage of oil past the tappet rod allows the cam follower part f to act directly on the upper or plunger part p, but at higher engine speeds an oil buffer develops between the parts and takes up the clearance between the tappet rod and the valve stem. The cam follower f has a larger diameter than the plunger part p to increase the valve lift,
Patent GB-888824-A (GB)
Title: Anti-skid system-electric circuit
IPC: B60L3/10
Filed: 1960-03-07
Abstract: 888,824. Electric correspondence control systems. GOODYEAR TIRE & RUBBER CO. March 7, 1960 [April 7, 1959], No. 7930/60. Class 40 (1). [Also in Group XXXIV] Apparatus for determining wheel skid comprises a tachogenerator 2 (Fig. 2), coupled to the wheel, which normally charges a capacitor 6, but when the wheel skids and the output from the generator 2 falls, the capacitor discharges through potentiometer 9 to produce a voltage at the slider which is amplified by transistors 17, 24 to energize a relay 27 whose contacts control the solenoid coil 20 of the hydraulic fluid brake valve 21 to release the brakes. As applied to an aircraft, a switch 39, located on a wheel strut, feeds a voltage to potentiometer 9 to produce release of the brakes until the aircraft touches down and closes the switch, producing energization of a relay 40. A relay 47 ensures that the brakes are not held off for longer than a predetermined period after manual switches 37, 38 are closed by charging a capacitor 51 determining the de-enexgization time of relay 47. When switch 39 is closed at touch-down and relay 40 is energized, the energizing circuit for relay 47 includes solenoid coil 20 and rectifier 54, but the current is insufficient to operate valve 21. When a skid signal is sensed and relay 27 operates, the supply to relay 47 is broken but it does not release until after the time delay determined by the discharge current of capacitor 51. If the brakes are still held off at the end of this delay, relay 47 falls followed by de-energization of solenoid 20 and brake action is restored. Specification 769,659 is referred to.
Patent GB-1066607-A (GB)
Title: Derivatives of benzamide
Inventor: FREY HANS-HASSO
IPC: C07C233/00
Filed: 1965-02-24
Abstract: N - Methyl - 2 - chloro - 6 - methylbenzamide is prepared by reacting methylamine or its salts with a functionally reactive derivative (e.g. the halide, ester such as the cyano-methyl ester, anhydride, or mixed anhydride such as the mixed anhydride with p-toluenesulphonic acid) of 2-chloro-6-methylbenzoic acid.  Therapeutic compositions in unit dosage form, which can be administered orally and which have a central nervous system depressant activity, contain N-methyl-2-chloro-6-methyl-benzamide as active ingredient.
Patent GB-913473-A (GB)
Title: Electrode assembly for oxygen analysis
IPC: G01N1/22
Filed: 1960-03-07
Abstract: 913,473. Electrolytic testing apparatus. HERSCH, P. March 1, 1961 [March 7, 1960], No. 8017/60. Class 37. A galvanic cell for the estimation of oxygen in a gas includes a porous cathode of which a portion is exposed to the gas, and of material not attackable by the gas and the electrolyte, an anode incapable of evolving hydrogen upon being circuited with the cathode, a porous diaphragm separating and contacting the anode and cathode and possessing greater electrolyteretaining power than the cathode, and a volume of electrolyte insufficient to fill the combined pore volume of the assembly. An anode of porous nickel sintered on to a nickel grid and impregnated with cadmium is sandwiched between two layers of porous plastic sheet which contain caustic potash solution and are covered by porous silver layers. Other embodiments include a stainless steel rod plated with antimony as anode, covered successively by porous plastic and a porous copper cathode; and a five-layer structure having two cathodes and a common anode. The gas to be tested should be pre-humidified, and the amount of electrolyte in the cell can be adjusted either by submersion of the assembly in electrolyte and subsequent pressing between absorbent paper, or by use of a syringe. Other specified cell materials are:- cathode-graphite, metal-activated carbon or nickel, and porous plastic with platinum, gold, or silver deposited in its pores; anode-lead, bismuth, steel coated with arsenic, and nickel or carbon impregnated with cadmium, lead, antimony, or ferrous hydrate; diaphragmporous polyvinylchloride or magnesium oxide; electrolyte-potassium bicarbonate and sulphuric acid. The cell current depends, at low flow rates, on the rate of supply of oxygen (coulometric operation) but at high flow rates on the oxygen concentration only. A limited sample may be analysed by enclosing it in the cell housing, or injecting it into a flowing carrier gas, and integrating the resultant current. Oxygen in a liquid or solid may be measured subsequent to transfer to a carrier gas, and the apparatus may be employed to give warning of air leaks, and for measurements related to blood, boiler feed water, the decomposition of peroxides, and the polymerization of ethylene. Specifications 707,323 and 750,254 are referred to.
Patent GB-1380872-A (GB)
Title: Sand-jetting device
IPC: B61C15/10
Filed: 1973-02-19
Abstract: 1380872 Rail-sanding devices KNORRBREMSE GmbH 19 Feb 1973 [17 Feb 1972] 8114/73 Heading B7J A rail-sanding device comprises a sand reservoir 3, a flexible sand tube 7 extending from the reservoir and terminating in an outlet portion 8 closed by a spring-loaded flap 14 when the device is inoperative, and a compressed air conduit 20 having a first outlet 21 which when the device is operative agitates the sand in the reservoir and feeds it into tube 7, a second outlet 9 which supplies air into cylinder 11 and forces piston 16 against spring 15 to move outlet 8 away from closure flap 14, and a third outlet 17 which causes sand fed into tube 7 to be sucked to outlet 8 and jetted therefrom on to a rail. The end 4 of tube 7 in reservoir 3 is located within a cupped member 5, so that sand is always fed into tube 7 from level 27 and a manifold 22 distributes the air emitted from outlet 21. Flap 14 is fixed onto cylinder 11 which is rigid with axle box 13.
Patent GB-164868-A (GB)
Title: Improved spring forks for motorcycles
IPC: B62K25/24
Filed: 1920-03-19
Abstract: 164,868. Dickson, L. W. E. March 19, 1920. Spring devices. - In a spring fork for motor-cycles, an horizontal spring C extending forwardly from the top of the steering-stem D is attached at its front end to the upper end of the fork girders 1, and two vertical springs A extending downwards from the lower end of the stem are arranged to slide within swivelling sockets M carried by the girdens, the arrangement being such that, on the withdrawal of the bolt G, the fork girders and the wheel can be disconnected, leaving the springs upon the frame. A link N may be fitted on each side of the spring C to provide an auxiliary connection between the casting E and the bolt G.
Patent GB-852312-A (GB)
Title: Preparation of dihaloborines
IPC: C07F5/02
Filed: 1959-03-09
Abstract: Dihaloborines (HBX2 where X = Br, Cl, or 1) are produced by contacting a mixture of H2 and BCl3, BBr3, or BI3, with an electropositive metal at a space velocity 0.7-0.95 min.-1 at 410-550 DEG C.  The molar ratio of H2:BX3 should be 3:1 to 8:1 and the metal may be Li, p  Na, K, Rb, Cs, Ca, Sr, Ba, Mg, Zn, K, or Al, or mixtures, alloys or amalgams thereof, and may be granular.  The products are stabilized by mixing HBCl2, HBBr2, or HBI2 with 50-60% molar of the corresponding BX3.
Patent GB-859376-A (GB)
Title: Improvements in or relating to apparatus for setting-up and tooling workpieces
IPC: B21D28/26
Filed: 1956-03-15
Abstract: 859,376. Photo-electric control systems. ZEALAND ENGINEERING CO. Ltd., LANGMEAD, F. H., and LANGMEAD, P. N. June 12, 1957 [March 13, 1956], No. 8187/56. Drawings to Specification. Class 40(3). [Also in Group XXII] In a machine in which a tool, e.g. a punch or drill is movable towards and away from the work to operate upon the work and the work and a template are mounted on holders connected to move together in any direction transverse to the movement of the tool, a sensing device, e.g. a photo-electric device, is actuated when predetermined locations on the template are brought opposite to it to cause the tool to operate on corresponding portions of the work. In a machine (see Group XXII) for punching holes in a metal sheet, the template is provided with corresponding apertures which when interposed between a photo-electric cell and a light source permit energization of the cell to automatically operate the punch.
Patent GB-181493-A (GB)
Title: Improvements in or relating to electrically actuated automatic starting gear for internal combustion engines
IPC: F02N15/02
Filed: 1921-03-16
Abstract: 181,493. Sweeney, F. (trading as Cheetham Motor & Engineering Co.), and Bond, W. B. March 16, 1921. Machines with two armatures. - Relates to electric starting gear for internal-combustion engines geared to dynamos, the electric motor and the dynamo being mounted in one casing. In the arrangement shown in Fig 1, an electric starting-motor b drives the engine through the dynamo spindle d by means of sprocket. wheels l<1>, h and chain gearing and a pawl and ratchet-wheel arrangement l, i. A wheel o on the dynamo spindle gears with a wheel on the engine crank-shaft. In a modification, the motor and dynamo shafts are at right-angles and are connected by bevelgearing and ratchet mechanism. In another arrangement, the shafts are in line and are connected by pinions, an internally toothed wheel, and a ratchet arrangement. Reforence has been directed by the Comptroller to Specifications 1174/14, 3295/14, 16080/15, [Class 7 (v), Internal-combustion engines, Starting &c.], 108,620, and 136,765, [Class 7 (v), Internal-combustion engines, Starting &c.].
Patent GB-724712-A (GB)
Title: Improvements relating to die casting presses
IPC: B22D17/22
Filed: 1953-03-26
Abstract: 724,712. Casting-machines. GARBARINO, C. March 26, 1953, No. 8372/53. Class 83 (1). In a hydraulic press for die-casting lead or other metals, comprising a ram co-operating with a cylinder 4, the chamber 3 of the cylinder is open through diametrically arranged ducts 5, 6 into cavities in a die-holder 7 for holding dies 8 which are kept in place by inclined planes 13 at the inner ends of lateral spigots 9, 10 driven by hand wheels 11, 12 on screw-threaded shafts mounted in said die holder.