baber/WOPTO huggingface dataset:
Patent GB-226472-A (GB)
Title: Improvements in and relating to anti-skid devices for use on road vehicles
IPC: B60C27/08
Filed: 1924-11-19
Abstract: 226,472. Wildman, L. A., and Wildman, J. W. Nov. 19, 1924. Tread bands, projections, and surfaces. - A skid - preventing device consists of transverse chains comprising thin flat links 10 of uniform dimensions provided with two sharp road-engaging points separated by a recess and connected by pivots 9 passing through the adjacent ends of contiguous links directly inwardly of the road-engaging points. The chains may be independently secured to the tyre by straps, or by means of circumferential chains 1 to which the transverse chains are connected by metal links 6. The edges of the links 6 are formed with upstanding flanges 8 which taper to the outer ends. The ends of the chains 1 are connected by a pivoted hook 2, a link 3 and a keeper 5.
Patent GB-189616-A (GB)
Title: Improvements in and relating to railway rail chairs for holding bull head conductor rails upright without keys or other fastenings
IPC: E01B9/54
Filed: 1921-10-19
Abstract: 189,616. Proud, R. S. Oct. 19, 1921. Conductors for electricity. -Bull-head conductor rails are supported in a two-part chair and may be supported as shown, or reversed. One chair may support one, two or more rails.
Patent GB-1076836-A (GB)
Title: Improvements in and relating to apparatus utilizing programme carriers
IPC: G05B19/14
Filed: 1964-07-06
Abstract: 1,076,836. Programmed process control. SAAB AKTIEBOLAG. July 6, 1964 [July 8, 1963], No.27742/64. Heading G3N. In an arrangement for controlling a process a punched card is moved continuously in timed sequence with the stages of the process. In the control of a dyeing process, on-off operations, such as valve actuation, are effected in response to holes in one portion of the card and the datum setting of a closed loop control of vat temperature, by a resistance thermometer and a controlled mining valve, is adjusted in dependence on hole combinations in another portion of the card, to effect change in the vat temperature at a desired rate.
Patent GB-154783-A (GB)
Title: Improvement in grass mowing machines
IPC: A01D75/30
Filed: 1919-11-11
Abstract: 154,783. Roseman, J. A. Nov. 11, 1919. Lawn-mowers.-A grass-cutting machine comprises several units flexibly connected together and each consisting of cutting-apparatus, a heavy roller behind the cutter, and a frame surrounding the roller and cutter so as to protect them. In the form shown, the frames 3 of the two front mowers A are connected by chains 11 to a crossbar 8 on a tongue 7, which extends rearwardly between them. At the back, a rod 13 is pivotally connected with both frames and with the tongue 7. The frame of the rear mower B is connected to the centre of the bar 13 by chains 16, and to the frames of the front mowers A by chains 18 looped around them. Each frame is mounted on two or more adjustable wheels 4, 6 in front of the cutter 2 and heavy roller 1. Five or more mowerunits may be employed.
Patent GB-1058002-A (GB)
Title: Aryl-amino-acylamides
Inventor: SERJEANT ANDREW CHARLES
IPC: C07C233/12
Filed: 1964-07-07
Abstract: The invention comprises amides of the formula <FORM:1058002/C2/1> wherein the groups R, R1 and R11 have the following values <TABS:1058002/C2/1> and amides of the formula <FORM:1058002/C2/2> wherein the groups R, R1, R11, R3, R4\t and R5 have the following values <TABS:1058002/C2/2> They are prepared by condensing the appropriate hydroxy-, alkoxy- or aralkoxy-anilines with the appropriate N-R11-haloacetamides or -propionamides.  Examples are given.
Patent GB-832984-A (GB)
Title: Improvements in or relating to fastener supplying devices
IPC: B25C1/00
Filed: 1956-09-14
Abstract: 832,984. Compressed-air engines. BRITISH UNITED SHOE MACHINERY CO. Ltd. Sept. 14, 1956 [Sept. 16, 1955], No. 28095/56. Class 122 (3). [Also in Groups VII and XXIV] A compressed-air motor comprises a piston 120 in a vertical cylinder 122 the lower end of which is alternately connected to a compressed-air supply 140 and to a vent 152 by a control valve 128 operated by a bracket 134 on the pistonrod 40 engaging adjustably mounted collars 136, 138 on the valve rod 132 as the piston 120 approaches the end of its downward and upward strokes respectively. The duration of the upward stroke, due to entry of compressedair into the lower end of the cylinder 122, is controlled by an adjustable needle valve 126 in a vent in the upper end of the cylinder 122. The duration of the downward stroke, due to the weight of the mechanism connected to the piston-rod 40 (see Group VII), is controlled by an adjustable restricted reverse flow valve 150 between the cylinder 122 and the control valve 128. The length of stroke is adjusted by means of the collars 136, 138.
Patent GB-226139-A (GB)
Title: Improvements in or relating to aeroplanes
IPC: B64C25/36
Filed: 1923-09-10
Abstract: 226,139. Kundig, E. Sept. 10, 1923. Land-wheels.-The engine 25 for driving the propellers 26 of an aeroplane, is adapted to be coupled to a rear land wheel 12 by means of a clutch 24 operated by a lever 28 in the pilot's seat, the transmission comprising a chain 21 and sprocket 20, which rotates a shaft 16 carrying bevel gear 19 in mesh with a bevel gear 15 mounted on the axle 14 of the rear wheel 12. Specifications 27811/11, 121,393, 125;695 and 225,927 are referred to.
Patent GB-490634-A (GB)
Title: An improved furnace for the combustion of sulphur
IPC: C01B17/54
Filed: 1937-10-15
Abstract: 490,634. Sulphur burners. MONTECATINI SOC. GENERALE PER L'INDUSTRIA, MINERARIA, ED AGRICOLA. Oct. 15, 1937, No. 28119. Convention date, Oct. 19, 1936. [Class 51 (ii)] A furnace for burning sulphur comprises a shallow flat cast iron pan 1 on which sulphur fed from a hopper 5, melts and burns, a lower hearth 2, and rotating rabbles 6, 10 for raking the residues of combustion on the hearth 1 through the central drop-opening 9, and for discharging them at the periphery of the lower hearth. The furnace may be adapted for roasting pyrites by fitting additional hearths. Reference has been directed by the Comptroller to Specification 21255/08, [Class 51].
Patent GB-202203-A (GB)
Title: A new or improved appliance for detecting air leakages in tyre valves or the like
IPC: G01M3/28
Filed: 1922-10-17
Abstract: 202,203. Lumb, J. Oct. 17, 1922. Leakage, detecting. -A device for detecting leakage from tyre and like valves is made wholly or in part of flexible material, and is adapted to contain a transparent liquid in which the valve is immersed. In the form shown, a lower part B of indiarubber is sprung over an upper part A of glass or celluloid. According to the Provisional Specification, the device may be made entirely of glass or celluloid.
Patent GB-249584-A (GB)
Title: A process for the production of unsymmetrical arseno-benzene compounds
IPC: C07F9/74
Filed: 1924-11-24
Abstract: 249,584. Deutsche Gold-und Silber- Scheideanstalt vorm. Roessler, and Albert, A. Nov. 24, 1924. Unsymmetrical arseno-benzene compounds are prepared by subjecting to reduction a mixture of two compounds selected from the following groups : (1) aromatic aldehydo- or ketoarsinic acids, aliphatic-aromatic keto-arsinic acids or the corresponding arsenoxides, the preparation of which is described in Specifications 199,091 and 220,668, (2) condensation products of hydrazine or its derivatives with the arsinic acids or arsenoxides referred to under (1) above and described in Specification 199,092, or their arsenoxides, the preparation of which is described in Specification 199,093, (3) condensation products of organic compounds containing reactive amino groups (other than hydrazine or its derivatives) with the arsinic acids or arsenoxides referred to under (1) above and described in Specification 249,588, and (4) tri- or penta-valent organic arsenic compounds, such as halogen-, nitro-, oxy-, or aminoarylarsenoxides or carboxylated or sulphonated arsinic acids, glycine arsinic acids &c. The mixtures are made up of two different compounds selected from groups (1), (2) and (3) or from one of these groups, or of one such compound associated with a compound from group (4). The process is carried out by treating a solution or suspension containing approximately equimolecular proportions of the two substances with a reducing agent such as sodium hydrosulphite. Examples are given of the reduction of the following pairs of components :-p-acetophenonearsinic acid and p-benzaldehydearsinic acid, p-acetophenonearsinic acid semicarbazone and p-acetophenonearsinic acid, p-propiophenonearsinic acid and 3-oxy-1- acetophenone-4-arsinic acid semicarbazone, pbenzaldehydearsinic acid methylphenylhydrazone and 1-oxy-2-acetophenone-4-arsinic acid, p-benzaldehydearsinic acid oxime and 3-oxy-1-acetophenone-4-arsinic acid semicarbazone, 3-oxy-1- acetophenone-4-arsinic acid semicarbazone and pacetophenonearsenoxide, p - acetophenonearsenoxide and 3-oxy-1-acetophenone-4-arsenoxide, pbenzalacetonearsinic acid semicarbazone and 3- oxy-1-acetophenone-4-arsinic acid semicarbazone, 3-oxy-1-acetophenone-4-arsinic acid semicarbazone and p-phenylglycinearsinic acid, sodium p-amidophenylarsinate and sodium p-acetophenonearsinate, p-benzaldehydearsinic acid methylphenylhydrazone and p-oxyphenylarsinic acid, phenylarsinic acid and 3-oxy-1-acetophenone-4-arsinic acid, m-nitroacetophenonearsinic acid and pphenylglycine arsinic acid, p-benzaldehydearsinic acid oxime and p-oxyphenylarsinic acid, p-acetophenonearsenoxide and phenylarsenoxide, chlor-1- benzalacetone-4-arsinic acid and sodium p-oxyphenylarsinate, 3-oxy-1-acetophenone-4-arsenoxide and phenylarsinic acid. Chlor-1-benzabacetone-4-arsinic acid is obtained by chlorinating in the cold a solution of p-benzalacetone-4-arsinic acid in glacial acetic acid.
Patent GB-655562-A (GB)
Title: Improvements in or relating to propeller pitch control mechanisms
IPC: B64C11/42
Filed: 1947-10-22
Abstract: 655,562. Variable-pitch propellers. UNITED AIRCRAFT CORPORATION. Oct. 22, 1947, No. 28243. Convention date, Nov. 22, 1946. [Class 114] [Also in Group XXIX] The regulating valve 34 of the hydraulic motor 16 of a pitch-changing mechanism of the kind described in Specification 560,522 is controlled by a servomotor 70 having a differential piston 104, 106 loaded at one end by a spring 38 and at the other by a spring 122, the tension in which may be varied by a threaded sleeve 124. The opposite sides of the piston 104 are exposed to the governor pump pressure through pipes 68, 156, while the opposite sides of the piston 106 are subject through pipes 164, 172 to the pressures in the compensator cylinder 168 and the reservoir 60 containing the governor pump 56 which operates only while the propeller is rotating. In operation, when the engine speed falls below a pre-set value, pressure liquid is admitted to the opposite sides of the piston 104 which moves to the right and through the rod 72 operates the valve 34 so that the hydraulic motor 16 adjusts the propeller blade to its lowpitch position. Meanwhile, the liquid to the right of the piston 106 is forced through the pipe 172 to the reservoir, and the spring 122 is compressed. When the engine speed rises above the pre-set value, the pressure liquid from the pump will pass via the pipe 156 to the right-hand side of the. piston 104 which moves to the left and regulates the valve 34 so that the hydraulic motor adjusts the propeller blade to its high-pitch position. When the engine stops and the propeller ceases to rotate, the pump pressure falls to zero and the differential piston is moved by the springs to a position in which the propeller blade is adjusted to a position between its high- and low-pitch positions dependent upon the pressure applied to the spring 122 by the sleeve 124. Specification 14768/47 (as open to inspection under Sect. 91) is referred to.
Patent GB-352820-A (GB)
Title: Improvements in or relating to hangers for supporting articles such as pipes and the like
IPC: F16L3/24
Filed: 1930-09-22
Abstract: 352,820. Supporting pipes and like articles. WATTS, A. W., Rookery Nook, Edgware Road, The Hyde, Hendon, London. Sept. 22, 1930, No. 28303. [Class 99 (ii).] A hanger for supporting a pipe &c. from an overhead girder comprises two members a, b which are pivotally connected at a point c intermediate of their ends. The lower ends of the two members are mutually shaped to accommodate the pipe d and the upper ends to engage the lower flange of the girder.
Patent GB-1430054-A (GB)
Title: Direct current converter
IPC: H02M3/337
Filed: 1974-06-26
Abstract: 1430054 D.C.-D.C. converters PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 June 1974 [29 June 1973] 28315/74 Heading H2F In a D.C.-D.C. converter of the type in which at least one current interrupter A2 is coupled via a transformer to a rectifier D3, providing D.C. output, an asymmetrically conductive circuit is included on the primary side of the transformer for reducing the primary voltage when the current is interrupted. The invention also includes either: (a) a circuit S11 for inhibiting closure of the current interrupter A2 in response to the presence of the potential across the secondary winding in the reverse direction of the rectifier D3; or (b) a charge storage element C6 (Fig. 4) coupled to the primary T6 via a pair of current interrupters A5, A6, in which the primary voltage is controlled by means of a pair of cross-coupled asymmetrically conductive devices D11, D12. As described, when transistor A2 is conductive, rectifier D3 provides D.C. output at K7, K8. When A2 is cut off, diode D13 turns on transistor A3 which dissipates the energy in the primary T4. Diode D5 also becomes conductive, turning on transistor A4 which turns on an inhibiting circuit S11 which inhibits further triggering of A2 until the transformer yoke becomes sufficiently demagnetized and thus prevents core saturation. Free-wheeling diode D4 maintains low current in inductor L1. In Fig. 4 the D.C. input is derived by rectifying A.C. at K9, K10 by means of a diode bridge D6 ... D9 which charges capacitor C6. Transistors A5, A6 are turned on in synchronism to provide the power pulse whilst diodes D11, D12 become conductive when A5, A6 are turned off, to return surplus energy to C6. The secondary circuit is the same as in Fig. 3. Thyristor TH is turned on by the voltage across winding T7 so as to short circuit resistor R9 when the circuit is operating correctly. Reference is also made to the primary and secondary currents providing cancellation of the core magnetization.
Patent GB-1391411-A (GB)
Title: Rotary-field electrical machaines
Inventor: LANGWEILER F
IPC: G01R31/34
Filed: 1972-06-16
Abstract: 1391411 Dynamo-electric machines SIEMENS AG 16 June 1972 [19 June 1971] 28418/72 Heading H2A In a rotary field electric machine having a stator, a slotted rotor and a probe for monitoring the air gap flux, the active extent l of the probe in the circumferential direction is equal to the rotor slot pitch. The probe is located in a recess V in the stator core and may comprise one or more Hall plates, an inductive loop or a magnetic field dependent resistor.
Patent GB-616682-A (GB)
Title: An improved method and apparatus for getting and loading coal and other minerals
IPC: E21C27/06
Filed: 1946-09-23
Abstract: 616,682. Mining coal &c. VOGEL, W. Sept. 23, 1946, No. 28424. [Class 68 (i)] Coal and other minerals are mined by means of a rotatably mounted cutting device which is first swung in one direction to form a cut beginning perpendicular to the old face and ending tangential to the new face so as to cut a cresent-shaped strip of mineral, and is then swung in the reverse direction to sweep the won mineral to a loading position, after which the cutting device is advanced along the face into position to win and load a further strip of mineral. As shown, a frame 2, carrying a cutter chain driven by a motor 3, is oscillated by means of hydraulic rams 6, 6a acting through a rack 17 engaging a toothed segment 18, so as first to enter the mineral and cut out a section B, and then, during the return movement, to move the cut mineral up a ramp 4 on to face conveyer 5; movement of the cut mineral is assisted by members 7, 8 hinged to the lower part of the frame 2 and taking up a vertical position during the return stroke, members 7, 8 being spring-pressed if desired. The machine is then advanced, as by a hydraulic winch, to attack a strip C of mineral. During the cutting stroke, cuttings &c. are raised by the lower run of the cutter chain through a conduit 12d to a spiral housing 12b and drop into a pocketed wheel 13 which delivers them through a shoot 4a to the face conveyer. Shoots 4, 4a are slidably or hingedly mounted so as to be withdrawable when desired. A screw or other means may assist in raising the cuttings &c. Within the cutter frame 2, and movable in the plane thereof, is a plate 20 movable by hydraulic rams 19 towards the outer edge of the frame 2 to assist in loading the coal &c. on to the face conveyer or to split up the cut-out mineral. The machine may be reversible to cut in either direction along the face, and the various movements may be automatically controlled. In place of the endless-chain cutter shown, the cutting may be effected by two horizontal cutter-chain arms connected by a cutter bar, or by two cutter bars connected by a chain cutter, or by two chain cutters each of elbow form.
Patent GB-1262114-A (GB)
Title: Improvements in or relating to telecommunications exchange systems and in particular telephone exchanges with test circuits for intermediate line testing
Inventor: KROSIGK EBERHARD V
IPC: H04Q3/00
Filed: 1969-04-16
Abstract: 1,262,114. Automatic exchange systems. SIEMENS A.G. 16 April, 1969, No. 28473/70. Divided out of 1,262,113. Heading H4K. The availability of an intermediate link between matrices of adjacent stages of a switching network is determined by applying a high ohmic test potential of one polarity to one end of the hold wire of the link and connecting a detector to the other end of the wire such that the detector only responds to the test potential in the absence of a low ohmic busy potential of opposite polarity. Naturally, faulty e.g. open circuited links are not inadvertently seized since these will not transmit the test potential. As shown, capacitor C is normally fully charged so that when contact d is changed-over it can discharge through high resistance W2 and the hold wire H of link Z and thus bring-up electromechanical or electronic relay P. If busy potential in the form of low resistance (e.g. relay coils) negative battery is present on the wire H, diode G is biased-off and relay P cannot respond. The test potential and relay P are connected to the hold wire via auxiliary crosspoints of the matrix switches K1, K2 at respective ends of the link.
Patent GB-712434-A (GB)
Title: Improvements relating to apparatus for determining particle size distribution
IPC: G01N15/04
Filed: 1951-12-05
Abstract: 712,434. Testing finely divided material for particle size distribution. SIMON-CARVES, Ltd., and BOSTOCK, W. Nov. 3. 1952 (Dec. 5, 1951], No. 28490/51. Class 106 (2) An apparatus for determining the distribution of particle size of a finely divided material comprises a settling tube a adapted to contain a suspension of the finely divided material in a liquid in which the material is insoluble, the lower end of the tube a being immersed in and open to a bulk k of the same liquid, a balance pan m under the lower end of the tube a and means s for weighing the total quantity of material which has settled on the pan m. The apparatus includes a pre-mixing tube d in which the suspension can be placed and shaken to ensure uniform distribution, the top and bottom of the premixing tube d being connected to the top of the tube a by flexible tubes c' and c' which can be closed by spring or screw clips e' and e', so that the suspension is held in the tube d until it is desired to transfer it to the settling tube a. The tube a is located in a constant temperature jacket b. The pan m is carried by an arm n connected to a torsion wire operating a graticule r which is illuminated by a light source and observed through a telescope. The balance pan m is supported against the initial shock on introducing the suspension either by clamping the torsion wire against a suitable stop or by an arrangement beneath the pan which may be operated by a screw or cam or other suitable means. If it is desired to avoid balance pan movement, an arrangement may be used in which the weight deposited is indicated by the amount of twist applied to the torsion wire to keep the balance pan stationary.
Patent GB-1018182-A (GB)
Title: Method of obtaining peracetic acids
IPC: C07C409/24
Filed: 1962-07-25
Abstract: Peracetic acid is made by oxidation of acetaldehyde in a concentration less than 35% in ethyl acetate or acetane solution by contacting said solution with molecular oxygen and irradiating with ultraviolet rays or with molecular oxygen and ozone, preferably at least 1% by weight of ozone referred to the weight of the oxygen, and optionally irradiating with ultraviolet rays at a temperature of 0 DEG  to 3 DEG  C.  The examples describe the oxidation in ethylacetate solution with oxygen under the influence of ultraviolet radiation, and with ozone.
Patent GB-1126783-A (GB)
Title: Co-production of a styrene and a diolefin
Inventor: RUSSELL JOSEPH LEE
IPC: C07C67/00
Filed: 1966-06-27
Abstract: 1,126,783. Olefine oxides; alcohols. HALCON INTERNATIONAL Inc. 27 June, 1966 [28 June, 1965], No. 28617/66. Heading C2C. [Also in Division C5] Ethylbenzene or cumene is oxidized with O 2  to ethylbenzene hydroperoxide or cumene hydroperoxide respectively and an olefin oxidized to an olefin oxide with said hydroperoxide whereby the hydroperoxide is converted to α- phenylethanol or α,α-dimethylbenzyl alcohol respectively. These alcohols and the olefin oxide may be dehydrated separately to give a styrene and a diolefin (see Division C5). Olefins exemplified are butenes and methylbutenes. The first step may be carried out at 40-180 C. at a pressure of 15-1000 p.s.i.a. with O 2  or air. The oxidation of the olefin may be carried out at- 20 to 200 C. and a pressure from atmospheric to 1000 p.s.i.g. in the presence of a compound (e.g. naphthenate or carbonyl) of Cr, Zr, U, Ta, Mo, Ti, V, W, Re, Se, Nb or Te as catalyst in amount 0À0002-0À03 mols per mol of hydroperoxide. Basic compounds such as compounds of Na, Ka, Li, Ca, Mg, Rb, Cs, Sr and Ba, preferably soluble in the reaction medium, may also be present in amount 0À05 to 10 mols/mol of epoxidation catalyst.
Patent GB-301177-A (GB)
Title: Improved means for extracting dust from air, or from cotton and the like
IPC: A47L5/14
Filed: 1927-10-29
Abstract: 301,177. Quinn, r., and Wild, L. Oct. 29, 1927. Dust collectors.-A pipe conveying cotton pneumatically, or traversed by dust-laden air &c., is provided with a baffle c immediately before a perforated portion d of the pipe, through which portion the dust from the cotton, air &c. is forced by the swirling motion imported to it by the baffle into a surrounding dust box e, while the cleaned cotton &c. passes on. The pipe may be flared at both ends towards the dust separating portion. Inspection doors are provided.