baber/WOPTO huggingface dataset:
Patent GB-1161834-A (GB)
Title: Improvements relating to Alternating Current Regulator Circuits.
Inventor: KING KENNETH GORDON
IPC: G05F1/455
Filed: 1967-01-20
Abstract: 1,161,834. Control systems for inductive loads. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 21 Dec., 1967 [20 Jan., 1967], No. 3209/67. Heading H2H. [Also in Division G3] In order to prevent asymmetrical magnetization or saturation of an inductive load-such as a transformer-fed from an A.C. source by way of controlled switching devices the switching devices are so controlled that, upon switching on, the voltage applied to the load increases at a relatively slow rate but upon switching off or on a failure of the supply, the voltage across the load decreases rapidly. A load 7 is supplied from an A.C. source 1, 2 by way of a transformer 5, 6 and a pair of reversely connected thyristors 3, 4, the gating signals for the thyristors being produced by a driver circuit 8 under the control of a circuit which includes a timing network 20, 21 and transistors 18, 22. Upon switching on a capacitor 15 rapidly charges from the source 1, 2 by way of a transformer 10 and a full wave rectifier 14. The rectifier 14 also establishes a potential across resistors 19, 20, thereby causing the capacitor 21 to take up a charge. The potential at the base of transistor 22 then gradually increases, whereupon the control signal from a potentiometer 11 to the driver circuit 8 thus causing the driver circuit 8 to advance the firing angles of the thyristors 3, 4 from an initial maximally retarded angle to the normal operating angles selected by the potentiometer 11. Thus, the voltage applied to the primary winding 5 of the transformer is increased from a low to the normal value during a period dependent upon the long time constant circuit 20, 21. Should the supply disappear for any reason, the transistor 18 becomes conductive to discharge rapidly the capacitor 21, thus ensuring that whatever the length of the period during which the supply is absent, the timing network 20, 21 is in its normal state when the supply is resumed. In other embodiments, the two transistors 18, 22 may be replaced by a thyristor or a single transistor in which latter case the bridge 14 and capacitor 15 is duplicated. In yet a further embodiment, a signal representing the voltage across the load 7 is also fed into the driver circuit 8 when the voltage across the load is regulated to constancy. If desired, the contacts of a contactor may be incorporated between the source and the load with further contacts between the source and the transformer 10.
Patent GB-897931-A (GB)
Title: Preparation of ª-, ª--pentamethylene butyrolactone
IPC: C07D307/94
Filed: 1958-09-08
Abstract: b ,b -Pentamethylene butyrolactone is prepared by reacting a di-silver salt of cyclohexane diacetic acid with iodine at a temperature of between about 150 DEG C. and about 170 DEG C. in the presence of nitro benzene.  Cyclohexane diacetic acid di-silver salt is prepared by reacting cyclohexanone with ethyl cyanoacetate in the presence of ammonia to form the ammonium salt of 4,4-pentamethylene-3,5-dicyanglutarimide, hydrolysing this with sulphuric acid to give cyclohexane diacetic acid and forming the di-silver salt.
Patent GB-836388-A (GB)
Title: Improvements in or relating to machines for cutting soles for footwear
Inventor: COLLINSON RALPH JAMES
IPC: A43D29/00
Filed: 1958-01-31
Abstract: 836,388. Cutting-machines. COLLINSON'S PATENTS Ltd. Dec. 22, 1958 [Jan. 31, 1958], No. 3226/58. Class 31 (1). In a machine of the kind described in Specifications 579,343 and 693,507 in which a sheet of leather, rubber or other material is placed on a multiple knife and relative movement takes place between the knife and a co-operating member, e.g. a roller to impale the sheet material on to the knife so that a multiplicity of soles are cut out simultaneously, the knife comprises transverse knives 10 to alternately cut a toe and heel and longitudinal knives 11, each of which is adapted to cut the outside edge of one sole and the inside edge of its neighbour. The knives 11 abut against the knives 10 at 12 and 13. T and H indicate the toe and heel ends of a sole-shaped knife element of the multiple knife. The cut soles and the waste 14 may be ejected from the multiple knife by ejectors such as described in Specification 678,289 or 702,324, or by means of rubber pads.
Patent GB-959235-A (GB)
Title: Improvements in rotary internal combustion engines
IPC: F02B53/00
Filed: 1962-01-29
Abstract: 959,235. Rotary I.C. engines, carburetters. NSU MOTORENWERKE A.G., and WANKEL G.m.b.H. Jan. 29, 1962 [Feb. 1, 1961], No. 3240/62. Headings FIB and F1F. In a rotary internal combustion engine in which a three lobed piston rotates inside a two lobed housing 1, the main inlet passage 3 is supplemented by a smaller inlet passage 15 which supplies a fuel-air mixture from the carburetter 30 under low load conditions without fuel being deposited on the walls of the passage. The inlet passages may be in the peripheral wall of the housing, as shown, or in one of the end walls, the passage 15 being located so that it is only briefly uncovered by the piston (see Fig. 1, not shown). The passage 15 is preferably after the passage 3 in the direction of rotation D of the piston. A third passage 28 may be formed to provide a more uniform mixture under partial load conditions. The passages 3, 15 and 28 communicate with corresponding passages 331, 14 and 33 in the carburetter. The linkage between throttle valves 34, 34<SP>1</SP> and the throttle control 35 is such that the valve 34<SP>1</SP> in the main passage 33<SP>1</SP> only starts to open when the valve 34 is fully opened. A spring loaded flap valve 36 is opened by suction when the valve 341 is opened. Specification 866,307 is referred to.
Patent GB-289958-A (GB)
Title: Process for the manufacture of tetranitrodianthrone and of 2.7-dinitroanthraquinone therefrom
Filed: 1927-02-04
Abstract: 289,958. Carpmael, W., (I. G. Farbenindustric Akt.-Ges.). Feb. 4, 1927. Tetranitrodianthrone is prepared by treating dianthrone with nitrating agents such as concentrated nitric acid or nitrating acid. 2 : 7-Dinitroanthraquinone is produced by oxidation of tetranitrodiantbrone, advantageously after the latter has been converted to the enolic form by treatment with weak bases such as pyridine, aniline or weak aqueous alcoholic alkali lye. In an example, tetranitrodianthrone is boiled with pyridine and the tetranitradianthranol precipitated, after dilution with water, by adding acid. On oxidation with strong nitric acid, 2 : 7- dinitroanthraquinone is produced. In a second example, the oxidation is effected by means of a solution of chromium trioxide in glacial acetic acid. Tetranitrodianthraquinone is formed during the oxidation as an intermediate, product, but it is readily further oxidized to the 2 : 7- dinitroanthraquinone.
Patent GB-591600-A (GB)
Title: Improvements in circular knitting machines
IPC: D04B9/18
Filed: 1945-02-09
Abstract: 591,600. Knitting-machines. LACY, S. W. B. Feb. 9, 1945, No. 3261. [Class 74 (ii)] A carrier D in which are mounted wrap yarn fingers A is carried on the outer end of a hollow arm J mounted to slide up and down, but not to rotate about, a vertical hollow standard L extending upwards from the machine table M, or from the ground, the driving shafts K, N between the main shaft O and the rotating gallery F for the finger-operating cams B being disposed.within the arm and standard. Thus, the patterning mechanism may be raised to an inoperative position, in which it is retained by plunger R, the shaft N being telescopic to permit of the drive being maintained. A stop Q holds the arm in the normal operative position. The inner end of the arm J and the standard L may have coacting V-shaped edges, and adjusting strips may be provided. The gallery F may be raised or lowered for selective operation of the yarn fingers.
Patent GB-662454-A (GB)
Title: A machine for cutting the tops of beet or other like root crops
IPC: A01D23/02
Filed: 1949-02-07
Abstract: 662,454. Beet-topping machines. SILK, O.A. Jan. 30, 1950. [Feb. 7, 1949] No. 3294/49. Addition to 615,095. Class 6 (iii). In beet-topping machines comprising a pair of mutually inclined rotary cutter discs d, a guide disc i rides over the roottops. The guide disc is driven from the shaft o of the groundwheels b through sprocket and bevel gearing, and a flexible shaft t and both the guide and cutting discs are supported from the pivoted frame c. Guidance over the roottops is afforded by an attendant on the seat m swinging a lever k. From the cutter discs the severed tops pass by a conveyer disc u to a conveyer v and a collecting device. The lever k may be omitted if the disc i is formed with laterally-projecting triangular vanes.
Patent GB-943200-A (GB)
Title: Fuel injection pump
IPC: F02M41/12
Filed: 1960-01-29
Abstract: 943,200. Fuel-injection pumps; engine starting. BORG-WARNER CORPORATION. Jan. 29, 1960 [Feb. 4, 1959], No. 3319/60. Headings F1A and F1K. In a fuel injection pump comprising a pump plunger 22, Figs. 1 and 3, reciprocable and rotatable by means of a drive shaft 14 and cam 15 within a bore 33 to supply a metered quantity of fuel to each of the cylinders of an I.C. engine, fuel under pressure is supplied through a port 75 to a reservoir chamber 72 closed at its top by a flexible diaphragm 73. The chamber 72 communicates with the pumping chamber 34 through a plug 45 having a ring of ports 50 and an annular groove 49 controlled by an annular inlet valve plate 46 loaded by a spring 47. The presence of the flexible diaphragm ensures that during the suction stroke of the pump with the valve plate 46 unseated, the pressure within the chamber 72 is maintained substantially constant. On the compression stroke of the pump, fuel is firstly forced into a chamber 61 to urge a spring-loaded piston 57 rightwardly until arrested by a stop member 58 which member may be adjusted to determine the amount of fuel trapped in the chamber 61. After the piston reaches the stop, a spring-loaded delivery valve 42 opens to discharge a metered quantity of fuel from the chamber 34 into an axial bore 37 of the plunger which communicates through a radial port and a slot 38 with one of a plurality of ports 35 connected to the engine cylinders. The slot 38 permits communication with one of the ports during the whole of the pump compression stroke and so reduces wear on the port and slot edges. The stop member 58 may be positioned in accordance with engine demand by mechanism subject to air pressure in the intake manifold at a point adjacent the throttle valve. Leakage of fuel past the plunger 22 and piston 57 is collected in annular grooves 68, 66 respectively and passes through a port 70 to the fuel supply tank. Additional fuel for starting the engine is supplied through a line 102 connected to the inlet chamber of the fuel injection pump. The line 102 includes a restriction 104 fitted with a pressure-relief valve 101. A solenoid-actuated valve 99 normally blocks a port 106 and opens when the electrical starting system is energized and a thermally-actuated valve 100 controls the amount of fuel issuing from a jet 105 in accordance with ambient temperature.
Patent GB-1205841-A (GB)
Title: Lens with variable focal length
IPC: G02B15/16
Filed: 1968-01-22
Abstract: 1,205,841. Zoom lenses. SOC. D'OPTIQUE., PRECISION, ELECTRONIQUE ET MECANIQUE. Jan.22, 1968 [Jan.25, 1967], No.3336/68. Heading G2J. A zoom lens has a first convergent unit G1 movable only for focusing at different object distances, a fixed second divergent unit G2, a movable third convergent unit G3, a fourth divergent unit G4 movable in the opposite direction to that of G3 and having its movements proportional thereto, a fifth convergent unit G5 coupled for identical movement with G3 and a fixed rear unit G6 wherein, assuming the focal length of the fourth unit to be -1 and the focal lengths of the units G1, G2, G3 and G5 to be f 1 , f 2,  f 3  and f 5  respectively:- 2À3 < f 1  < 6 -2 < f 2  < 1 - 3À25 < f 1  Î f 2 /f 1  + f 2  < -2À4 1À65 < f 3  < 1À90 1À45 < f 5  < 1À67. Optical data are provided for the example shown.
Patent GB-1095913-A (GB)
Title: Isoquinoline derivatives
IPC: C07D471/18
Filed: 1965-01-07
Abstract: The invention comprises compounds of the formulae <FORM:1095913/C2/1> <FORM:1095913/C2/2> wherein R1 represents a C1- 6 alkyl, cycloalkylmethyl, aralkyl or alkenyl radical and X represents a hydrogen or halogen atom or a C1- 6 alkyl, C1- 6 alkoxy, nitro, mercapto or amino radical which may be prepared by reacting N-R1-substituted cyclohexenylethylamines with indoleacetic acid or X-substituted indoleacetic acids or esters of said acids to give the corresponding amides and ring-closing said amides with phosphorus oxychloride to give a compound of the Formula II and, if desired, reducing the latter to give a compound of the Formula III.
Patent GB-756388-A (GB)
Title: Fastener strip
IPC: A44B13/00
Filed: 1954-02-05
Abstract: 756,388. Fastener-strips. RABINOWITZ, L. M. Feb. 5, 1954, No. 3439/54. Class 141. A continuous fastener strip for wearing-apparel comprises a fabric strip 10 having overlapping portions 11, 13 between which fasteners 20, 20<1>, in spaced groups of at least two, are secured by stitching 15, this stitching including transverse relatively long marking stitches 40 to indicate the line of cut when subsequently severing the strip into sections. Specification 753,149 is referred to.
Patent GB-693552-A (GB)
Title: Improvements in track apparatus for giving signals on locomotives, and signalling passage of locomotives to wayside cabins
IPC: B61L3/04
Filed: 1948-02-06
Abstract: 693,552. Track apparatus for actuating signals on trains and in wayside cabins. LETTEN, S. G. Feb. 1, 1949. [Feb. 6, 1948] No. 3468/48. Class 105. Track apparatus for giving lamp and buzzer signals in an engine cab as the train passes thereover and for signalling in like manner the passage of such train to the wayside signal box comprises a track contact device 1 which is set into position by the signalman and has a hinged plate 2 adapted to be depressed by the wheel flanges and an abutment 9 adapted to rock a lever 10 on the engine, movement of the plate and lever causing armatures 4, 4 of respective track and engine electromagnets 5, 5 to be moved towards the poles thereof and so to close at contacts 6 circuits which maintain the respective magnets 5, 5 energized to give lamp and buzzer signals until the signalman and the driver open a switch in the respective magnet circuits.
Patent GB-415951-A (GB)
Title: Valve seat grinding tool
IPC: B24B15/00
Filed: 1934-02-02
Abstract: 415,951. Grinding valve seats. BLACK & DECKER MANUFACTURING CO., Towson, Maryland, U.S.A. Feb. 2, 1934, No. 3472. Convention date, May 5, 1933. [Class 60.] In a power-operated tool for grinding valve seats the spindle connecting the grinding wheel to the actuating means is vibrated in the direction of its axis, so as to lift the wheel from the work, at intervals which are indefinitely and variably timed in relation to the speed of rotation. In the tool shown, a portable hand tool 1 houses an electric motor 4 the shaft 6 of which is recessed at the end to receive telescopically the upper end 17 of a shaft 15, which it drives by a slot and tongue connection 14, 18. A spring 13 tends to force the shaft 15 downwardly, the thrust being taken by a pair of tapered cam rings 21, 22, between which are balls 24 or other antifriction devices. The cam rings are free to rotate on the shaft 15, so that the frictional effects produce irregular rotation of one with respect to the other, causing the desired irregular axial vibration of the shaft 15. Alternatively, either the ring 21 may be secured to the shaft 15, or the ring 22 may be secured to the casing, in each case the other ring being free to rotate. The shaft or sleeve 34 carrying the grinding wheel is connected to the shaft 15 by a universal joint formed by a cup 33 of hexagonal section in which engages a ball member 30 of similar section at the lower end of the shaft 15, the friction at this joint being sufficient to impart the axial vibratory movements of the shaft 15 to the sleeve 34. The sleeve 34 is provided with cooling fins 36, and it is steadied by a pilot spindle 27 secured in the valve guide.
Patent GB-1093723-A (GB)
Title: Improvements relating to apparatus and methods for treatment of continuous webs
Inventor: BISHOP THOMAS DESMOND
IPC: B26F1/38
Filed: 1965-01-27
Abstract: 1,093,723. Die cutting apparatus. DERITEND ENGINEERING CO. Ltd. Jan. 27, 1966 [Jan. 27, 1965 (2)], Nos. 3498/65 and 3499/65. Heading B4B. A continuous web is die-cut by two or more roll pairs located for consecutive operation upon alternate portions of the web, the speed of the web and/or the speed of the dies being controlled whereby the scrap between blanks out by the respective dies is minimal. As described, the web speed may be controlled by feed rollers, the die-rollers being driven at constant speed, so that in the passage of rotation where there is no die rule on the rollers the web slows down and slips over the roll. Alternatively the speed of travel through the nip may be controlled by using loop formers. The dies 27, 29, Fig. 3, may be driven by a transverse beam 28 journalled upon the cores 23, 24 and driven by an epicyclic gear set at the roll ends, so that the dies are driven slower than the rolls. When the dies are cutting, they are tensioned by a beam 30 which is released to allow the die to slip on the roll. An arrangement of rolls with an adjustable nip, is also described.
Patent GB-123804-A (GB)
Title: A Combined Food and Beverage and Process of Making the Same.
Inventor: LYLE SAMUEL FRANCIS
IPC: A23L13/30
Filed: 1918-08-31
Abstract: 123,804. Lyle, S. F. Aug. 31, 1918. Beverages ready mixed with aerated waters; materials for making beverages.-A mixture of meat extract dissolved in boiling water, burnt sugar, salt and essence of ginger is bottled with aerated water.
Patent GB-160634-A (GB)
Title: Improved means for supporting and securing the bows and ends of boot and shoe laces and the like
IPC: A43C7/00
Filed: 1920-02-06
Abstract: 160,634. Longstaff, J. Feb. 6, 1920. Lacing-fastenings.-The bows and ends of boot and shoe laces are secured and supported to present a tidy appearance by double U-shaped members a attached to the front of the boot or shoe c by sewing, riveting &c., one on each side adjacent to the top pair of eyelets b, the U-portions of each member being at right-angles to each other. The leg of one U-portion lies on the inside of the boot, the other U-portion lying on the front of the boot and having its end formed as a loop d. In use, each back portion f of the bow is slipped under the corresponding member a and then over its outer looped side as shown. The lace ends g are similarly supported.
Patent GB-844299-A (GB)
Title: Method for coating pipe with olefin polymers
IPC: B05D1/18
Filed: 1959-02-03
Abstract: A pipe is coated with polyolefine by dissolving the polymers in a solvent and contacting the pipe with the solution while the pipe is maintained at a temperature outside the solubility range of the polymer, whereby the polymer is precipitated upon the pipe to form a coating.  The pipe may be immersed in the solution and either heated or cooled by causing a fluid to flow through it. Suitable polymers are polymers of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 4-methyl-1-pentene, 4-methyl-1-hexene, 5-methyl-1-hexene, 6-methyl-1-heptene, 4-ethyl-1-hexene, and 4-5-dimethyl-1-hexene. Suitable solvents are paraffins, aromatic hydrocarbons and chlorinated paraffins, also hydrocarbons substituted by hydroxy or alkoxy groups.  An olefine may be dissolved in such a solvent, polymerized catalytically, and the solution applied to a pipe without the polymer having been isolated.
Patent GB-328925-A (GB)
Title: Improved method of constructing buildings
IPC: E04B2/56
Filed: 1929-02-05
Abstract: 328,925. Clare, G. E. Feb. 5, 1929. Columns; walls. - The ordinary iron girder framework of buildings is replaced by precast tubular reinforced beams or columns carried through from floor two roof, this skeleton framework being used for small dwellings as well as for large structures. Precast tubular reinforced columns a, are fitted in sockets a<1> and are provided with precast brackets for supporting joists e and with sockets for roof plates d, which latter may be of timber. The walls are either of cavity blocks interfitting with one another and the columns, or of bricks laid so as to cover the columns or be flush with them.
Patent GB-1279745-A (GB)
Title: New polymeric compositions
IPC: C08L21/00
Filed: 1970-01-27
Abstract: 1279745 Graft polymer compositions STANDARD OIL CO 27 Jan 1970 [27 Feb 1969 19 May 1969] 3856/70 Heading C3G A polymer composition comprises component (A) which is either (1) a polymer produced from (a) at least 70% by weight of a nitrile of structure CH 2 =C(R)CN in which R represents hydrogen, a C 1 -C 4 -alkyl group or halogen and (b) 0 to 30% based on the weight of (a) and (b) of an ester of structure CH 2 =C(R 1 )COOR 2  in which R 1  represents hydrogen, a C 1 -C 4 -alkyl group or halogen and R 2  is a C 1  to C 6 -alkyl group or (2) a polymer produced from (a) 70 to 90% by weight of acrylonitrile and (b) 10 to 30%, based on the weights of (a) and (b) of an olefin of structure CH 2 =C(R<SP>1</SP>)R<SP>11</SP> wherein R<SP>1</SP> and R<SP>11</SP> are C 1  to C 7 -alkyl groups and (c) 0 to 20%, based on the weights of (a), (b) and (c) of a monoalkenyl component other than (a) or (b), or a mixture of (1) and (2) and component (B) which is either (1) a polymer produced by polymerizing from 100 parts by weight of monomers as in (A) (1) or (A) (2) specified above in the presence of 20 to 150 parts of a rubbery copolymer of a conjugated diene and at least one nitrile having the structure specified above, said copolymer containing 50 to 95% by weight of diene and 50 to 5% of nitrile, said components (A) and (B) being present in proportions such that the composition contains 1 to 20% by weight of the rubbery copolymer. Exemplified compositions comprise (i) (A) acrylonitrile-methyl acrylate copolymer and (B) butadiene-acrylonitrile rubber grafted with acrylonitrile and methyl acrylate, or isobutene, or with methacrylonitrile and methyl methacrylate, or butadieneacrylonitrile-methacrylonitrile rubber grafted with methacrylonitrile and methyl methacrylate; (ii) (A) methacrylonitrile-methyl methacrylate copolymer and (B) butadiene-acrylonitrile-methacrylonitrile rubber, or butadieneacrylonitrile rubber, grafted with methacrylonitrile and methyl methacrylate; (iii) (A) acrylonitrile-isobutene copolymer and (B) butadiene-acrylonitrile rubber grafted with acrylonitrile and isobutene or methyl acrylate, or with methacrylonitrile and methyl methacrylate.
Patent GB-819583-A (GB)
Title: Apparatus for winding several threads on to one bobbin
IPC: B65H54/10
Filed: 1956-02-08
Abstract: 819,583. Winding threads; false twist arrangements. BARMER MASCHINENFABRIK A. G. Feb. 8, 1956 [Feb. 8, 1955], No 3971/56. Class 120(2) A plurality of threads are wound on one bobbin after passing through a guide that reciprocates in front of the bobbin and includes an apertured member rotatable in a housing to generate a false twist in the threads that periodically changes direction. A traversing thread guide 1 has a toothed wheel 8 provided with holes through which threads pass to a spool 11. The wheel 8 is rotated by a rack 10 and the false twist imparted changes direction at each change of direction of the rack 10. The rotational movement of the wheel 8 is independent of the reciprocatory movemerit of the thread guide 1. Instead of the toothed wheel 8, a roller or pulley may be moved by a push rod.