baber/WOPTO huggingface dataset:
Patent GB-708304-A (GB)
Title: Improvements in or relating to tetrahydro compounds having the n formyl pteroyl-amino acid nucleus
IPC: C07D475/08
Filed: 1951-10-03
Abstract: The invention comprises substituted N10-formyl tetrahydropteridines of the general formula <FORM:0708304/IV (b)/1> wherein X represents an amino or dialkylamino radical, R represents an aliphatic N-amino acid radical and R1 and R2 represent hydrogen and/or chlorine (but excluding the case in which X represents an amino radical and R1 and R2 represent hydrogen), and a process for the preparation of the above compounds by reacting substantially 2 mols. of hydrogen with an N10-formyl pteridine of the general formula <FORM:0708304/IV (b)/2> or a salt thereof, wherein X, R, R1 and R2 have the significance indicated above.  The hydrogenation reaction may be carried out in an inert solvent in the presence of a reduction catalyst, e.g. platinum black, palladium on charcoal, platinum oxide or Raney nickel. Suitable inert solvents mentioned are water, formic acid, alcohols, glycol, acetic acid and dimethyl formamide.  When reduction methods are employed using metals or metal combinations such as sodium amalgam, zinc, aluminium amalgam, sodium borohydride, magnesium amalgam or magnesium, the solvent is usually water or an aqueous liquid.  The reduction may be carried out at a temperature between 0 DEG  C. and 150 DEG  C.  The N10-formyl pteridine starting material for the process may be prepared in situ by reacting the required 2-substituted-4-amino-6-pteridyl-methylamino compound with a formylating agent to introduce the N10 formyl radical, and the product is then hydrogenated.  The desired compounds may also be prepared by reacting a formylating agent with the 5,6,7,8-tetrahydro form of the required 2-substituted-4-amino-6-pteridylmethylamino compound to introduce the N10-formyl radical.  The aliphatic N-amino acid radical may be derived from glutamic acid or a peptide of glutamic acid such as glutamylglutamic, glutamylglutamylglutamic, hexaglutamylglutamic or glycylglutamic acid, aspartic acid, glycine, alanine, dl-isoleucine, dl-valine or serine.  In the examples (1) 5,6,7,8-tetrahydro - N2,N2 - dimethyl - 4 - amino - N10-formylpteroylglutamic acid is prepared by reacting N2,N2 - dimethyl - 4 - aminopteroylglutamic acid with formic acid to introduce the N10-formyl radical, and the product is reacted with hydrogen in the presence of platinum oxide; (2) by a similar procedure 5,6,7,8-tetrahydro - 31,51 - dichloro - 4 - amino - N10 - formylpteroylglutamic acid is prepared.
Patent GB-480281-A (GB)
Title: Improvements in or relating to electro-magnetically operated step-by-step single-motion switches
IPC: H01H67/06
Filed: 1936-08-21
Abstract: 480,281. Electromagnetic switches. STANDARD TELEPHONES & CABLES, Ltd., WRIGHT, E. P. G., and BOWSHER, E. A. H. Aug. 21, 1936, No. 23069. [Class 38 (v)] [Also in Group XXXIX] The interrupter contacts 36 of a step-by-step switch, which are carried respectively by a support 31, and a flexible strip 41, are controlled by a U-shaped member 30 pivoted to the support 31 by a pin 32, and connected thereto by a spring 37 of the form shown so that it operates with a snap action under the control of the magnet armature 33, which is forked to embrace a projection on the member 30.
Patent GB-660134-A (GB)
Title: Improvements in a power transmission train for tractors and like motor vehicles
IPC: F16H3/00
Filed: 1948-09-02
Abstract: 660,134. Change-speed and reverse gear. FLYNN, T. P. Sept. 2, 1948, No. 23157/48. Class 80 (ii) [Also in Group XXXI] A tractor transmission includes clutched reverse-gear 11, ahead of a selective change-speed gear 12 and operable by an independent lever linked to a rocker 29, to permit reversal without disturbing the setting of the change-speed lever 39, and the reverse-gear comprises an output shaft 19 driven by a parallel input shaft 15 through forward and reverse gear-pairs 24, 22 and 25, 23, the latter including an idler 25A, rendered effective by friction disc-clutches 20, 21 which replace the usual main-clutch and are freely mounted on the input shaft 15 and selectively engaged, through the rocker 29, by sliding a common member non-rotatably mounted on the input shaft 15 between the two clutches. The reverse-gear output shaft 19 forms the input of the three-speed gear 12 and has two sliding wheels 33 and 34, 35, controlled by the lever 39 and selectively driving wheels fast on a parallel output shaft 43. The highspeed fast wheel 42 drives a power take-off shaft 44 through a clutch 49, controlled by a lever on a rocker 50. The change-speed gear output shaft 43 carries a bevel-pinion 52 driving a transverse shaft 57 having two simple disc-clutches driving the respective tracksprockets 78 through reducing-gears and controlled, for steering, by separate levers such as 88. Fig. 6 (not shown) replaces the steering disc-clutches by three-element planetary trains acting as clutches by means of brake-bands on their reaction ring-gears. Additional brakes are provided for holding the inside tracksprocket on a sharp turn.
Patent GB-215258-A (GB)
Title: Improvements in switches for electric irons
IPC: H05B1/02
Filed: 1923-09-15
Abstract: 215,258. Benvie, H. Sept. 15, 1923. Retractive switches; automatic circuit-breakers.-An electric iron comprises a handle 3 having a movable section 4, a knife contact 11 in the section 4 adapted to co-operate with two screw head contacts 14, 15 in the part 3 when the parts 3, 4 are manually held together against the action of a spring 6, and a member 22 adapted to be moved under the part 4 to hold parts 3 and 4 together without manual aid. The section 4 pivots about a loosely fitting screw 5 and the downward movement of its other end is limited bv a screw 8. The member 22 is mounted on a plate 23 which rests on a spring 24. The lower end of the spring 24 engages a plate 25 which rests on a fusible plug 30 which rests on a member 28 pivoted to the base. Upon excessive temperature the plug 30 will fuse, the parts supported by it, including the section 4, will move downwards, and the supporting member 22, 23, 24. 25 will turn around its pivot and become completely disengaged.
Patent GB-772500-A (GB)
Title: Snap action electric switches
IPC: H01H61/06
Filed: 1954-08-10
Abstract: 772,500. Thermal switches. SIGNALSTAT CORPORATION. Aug. 10, 1954 [Aug. 18, 1953], No. 23178/54. Class 38(5) . A snap action electric switch similar to that described in Specification 762,045 which utilises a snap acting vane member disclosed in Specification 761,713 [Group XXXII] is provided with a further pair of co-operating contacts so as to function as a change-over switch to alternately energize two load circuits. A snap acting vane 10 snaps between two positions in one of which positions, the stress deformed position, contacts 25, 35 are closed to energize a signal lamp SL-1 over the vane mounting member 20 and the heat expansible element 30. When the element 30 has expanded sufficiently to allow the vane 10 to snap over to its initial preset position contacts 25, 35 are opened and contacts 55, 60 closed. A signal lamp SL-2 is now energized over the vane mounting member 20 and the. vane 10. Contact 35 is carried by the heat expansible element 30 whilst contact 55 is carried by the vane 10.
Patent GB-1125688-A (GB)
Title: Fluid flow responsive magnetic switch
Inventor: RYLAND JOHN ARTHUR
IPC: H01H35/40
Filed: 1967-05-18
Abstract: 1,125,688. Magnetic switches. G. A. PLATON Ltd. 18 May, 1967, No. 23225/67. Heading H1N. A fluid-flow switch has its sealed magnetic reed contact unit 6 within its fluid-flow passage and the operating permanent magnet 12 is contained in a sleeve 11 on which a plunger head 10 is secured. Flow of fluid in the direction F through a constrictor ring 16 moves the assembly 10, 11, 12 away from the contact unit 6 against the bias of a compression spring 15. The tube 4 containing the contact unit extends diametrically across the casing 1 and the sleeve 11 which is of stainless steel is slidably mounted coaxially of the casing 1 in a bush 13 in a bracket 14.
Patent GB-518412-A (GB)
Title: Improvements in or relating to textile fabrics
IPC: A41B3/10
Filed: 1938-08-06
Abstract: 518,412. Woven fabrics. ASHTON BROS. & CO., Ltd., BAYES, A. W. and ASPIN, J. Aug. 6, 1938, No. 23264. [Class 142 (iv)] In an insertion material for joining the layers of and stiffening multiply articles such as collars and cuffs, and which contain warp or weft' threads C, 2, 5, 8, 11 of cellulose acetate, cellulose propionate or other material which can be adhesive by heat or a solvent and which are floated on one side of the material at the fold lines, the inert threads are arranged in a plain 1 to 1 weave. Specification 492,862 is referred to.
Patent GB-1110477-A (GB)
Title: Improvements in or relating to element mountings for electric cookers and hot plates
Inventor: ALSOP JOHN FRANCIS
IPC: F24C15/10
Filed: 1966-05-25
Abstract: 1110477 Electric hot-plates BACKER ELECTRIC CO Ltd 25 May 1966 23335/66 Headings F4W and W18B13 A spill proof mounting for a movable tubular sheathed element of an electric cooker or hotplate comprises a recessed mounting 5 receiving and locating a semi-cylindrical hinge member 20 and a plate 13 to which the element and a stud 17 are attached, the stud and arms 11 of the element protruding through the mounting and hinge member and being urged outwardly by spring means 28. The spring is compressed between an adjustable nut 30 on the stud and a washer 29 bearing against mounting 5. The sheathed element is mounted above a spillage bowl 2 to which the mounting 5 is riveted. Raising the element causes the hinge member to turn in the mounting 5 which is slotted to permit movement of the stud and the element arms.
Patent GB-424577-A (GB)
Title: Improvements in or connected with revolution counting apparatus
IPC: G06M1/04
Filed: 1933-08-23
Abstract: 424,577. Revolution-counters. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and GRIFFITHS, L., 78, Biggin Hall Crescent, Stoke, Coventry. Aug. 23, 1933, No. 23479. [Class 106 (iii)] [See also Group XXXVII] In revolution-counting apparatus wherein a tachometer generator such as that described in Specification 395,404, [Group XXXV], drives a contact make-and-break device for intermittently feeding an electromagnetic counter of known construction, the contact-making device comprises a base for substitution for or addition to the end-plate at the non-driven end of the generator, and means are provided to ensure that the time of closed contact and the rate of contact opening are substantially constant irrespective of the speed of the driving spindle. The make-and-break device, which is driven through reduction gear by a worm 2 on the tachometer generator spindle, comprises a cam spindle 11 carrying a tripping pin 13 which is connected by a spiral spring 16 to a cam 15, the rotation of which is arrested by the upturned end of a leaf spring 14 until after rotation through about 270 degrees the pin 13 depresses the spring 14 and releases the cam, which thereupon is rotated rapidly by the spiral spring 16 until it is arrested by the pin 13. To prevent a too rapid rotation of the released cam, there may be provided a centrifugal brake comprising two bob-weights 35 mounted on the free ends of springs 36 and adapted to engage frictionally a fixed ring 37, the springs being secured to a spindle 33 carrying a steeply pitched worm driven by a toothed wheel 31 on the cam shank. Fig. 6 shows a uni-directional drive 39 for the cam spindle 11. The cam 15 may be made of an insulating material ; the material known under the Registered Trade Mark " Textolite " may be used. The plate 1 takes the place of the usual generator end-plate and supports a moulding 10.
Patent GB-872378-A (GB)
Title: Improvements in electric power supply devices
IPC: H02M7/217
Filed: 1959-07-08
Abstract: 872,378. Automatic voltage-control systems. SVENSKA RELAFABRIKEN A.B. July 8, 1959 [Aug. 29, 1958], No. 23530/59. Class 38 (4). In an automatic voltage control system for a rectified power supply a series transistor is controlled by a summation circuit arranged to sum up the voltage across a load, a reference voltage and a voltage from an auxiliary rectifier. As shown, a load RB is supplied from a secondary winding S1 of a transformer T via rectifiers D1, D2 and a filter R, C. A transistor Q is rendered alternately fully-conductive and non- conductive by a control voltage applied between base and emitter. The control voltage is derived from a summation circuit between base and emitter of the transistor summing up the voltage of a reference source E, the rectified voltage across a resistor R1 and the voltage across the load RB. The voltage across the resistor R1 is derived through auxiliary rectifiers D4, D5 from a secondary winding S2 of the transformer T. It is stated that the transistor Q may be of the PNPN-type having a characteristic similar to that of a thyratron. The filter may have an inductor in place of the resistor R.
Patent GB-286984-A (GB)
Title: Process for the manufacture of new quaternary ammonium compounds from halogen substituted tertiary aromatic amines
Filed: 1926-12-10
Abstract: 286,984. Carpmael, K., and Carpmael, K. S., (Representatives of Carpmacl, W.), (I. G. Farbenindustrie Akt.-Ges.). Dec. 10, 1926. Quaternary ammonium compounds are obtained by the action of sulphuric or arylsulphonic alkyl esters on halogen-substituted tertiary amines of the benzene or naphthalene series, e.g. the products referred to in Specification 288,665. The reaction may be effected in a solvent such as toluene or chlorobenzene. In examples, 3-chloro- 4-dimethylaminotoluene is treated with ptoluene-sulphonic methyl ester; 1-chloro-2-dimethylaminonaphthalene with dimethyl sulphate ; o-chloro-dimethylaniline with dimethyl sulphate; 3:3<1>-dichloro- (or dibromo-)-4:4'-tetramethyldiamino-diphenylmethane with dimethyl (or diethyl) sulphate.
Patent GB-442943-A (GB)
Title: Improvements relating to rain water fall pipes and the like
IPC: E04D13/08
Filed: 1934-08-15
Abstract: 442,943. Collecting rain &c. water. HAWKINS, G., 42, Cross Flatts Avenue, Beeston, Leeds. Aug. 15, 1934, No. 23586. [Class 68 (i)] A fitting for introduction into a fall pipe comprises a length of piping a with a spout &c. c and a manually operated valve d below the spout. The pipe a is secured by sleeves e which may be divided and held by bolts.
Patent GB-1081808-A (GB)
Title: Data receiving apparatus
IPC: G11B20/18
Filed: 1966-05-26
Abstract: 1,081,808. Error correction. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 26, 1966 [June 10, 1965], No. 23617/66. Heading G4C. Apparatus receiving a multi-byte block of data having byte and block redundancy, inverts a bit in response to a byte redundancy discrepancy signal and then checks the resulting block against block redundancy to validate (or otherwise) the inversion. The block is received serial by byte (and serial or parallel or serialparallel within the byte) into a one-byte store. Each byte in turn is then passed to an output, after inversion of one bit in the case of any byte whose byte redundancy indicates an error therein. A block redundancy check is performed on the block after any such inversions have taken place and if this indicates error, the block is retransmitted and the procedure repeated. The bit to be inverted is the same for all bytes in a given reception of the block but different for successive receptions, being selected by a one-stage-on shift register (or a counter). Thus the system attempts to locate an erroneous bit position in an erroneous byte by a trial and error procedure, every bit position being tried in turn (or only those statistically most likely to hold the error), in order of decreasing likelihood, until the block redundancy indicates no remaining error, when the shift register is reset. If the shift register reaches its last stage, indicating an uncorrectable error, a further sequence of transmissions of the block may be caused, in case the errorcausing conditions have changed. An end-ofblock sensor (conventional types listed) is provided. The block may be transmitted from a magnetic tape, core or thin film memory, over telephone wires or by radio. In the case of tape, successive transmissions of a block may be obtained with alternate directions of tape movement. If the block is sent to a computer, retransmission of a given block may be from the computer memory rather than the original source. The byte redundancy may involve one parity bit or a plurality of check bits, per byte. The block redundancy may involve, for the block as a whole, or for each tape channel (or &c.) separately, longitudinal, diagonal, Hamming and/or cyclic redundancy (the latter using a checking shift register with intermediate and end-around feedback and modulo-two addition). A large byte may have several portions, each with its own " byte " redundancy, dealt with in separate circuits, and some bits may be repeated in more than one portion.
Patent GB-843437-A (GB)
Title: Improvements in or relating to the manufacture of tubes and laminates
Inventor: LENO JOHN ALBERT
IPC: B32B15/08
Filed: 1956-07-31
Abstract: In the polymerization of a mixture of an unsaturated polyester and an unsaturated monomer by ionizing radiation, particularly high energy electrons, the monomer may be styrene, vinyl acetate, methyl methacrylate, acrylonitrile or triallyl cyanurate.  The radiation is preferably applied in a number of small doses to keep down the temperature.  Strips or layers of fabric may be impregnated with the reactants and used in the production of tubes (see Group XXVIII) or laminates (see Group VIII).  Specification 718,811 is referred to.ALSO:In the polymerization of a mixture of an unsaturated polyester and an unsaturated monomer by ionizing radiation, particularly high energy electrons, the monomer may be styrene, vinyl acetate, methyl methacrylate, acrylonitrile or trialkyl cyanurate. The radiation is preferably applied in a number of small doses to keep down the temperature.  Strips or layers of fabric may be impregnated with the reactants and used in the production of tubes (see Group XXVIII) or laminates (see Group VIII).  Specification 718,811 is referred to.
Patent GB-235441-A (GB)
Title: Improvements relating to travelling trunks and the like
IPC: A45C5/04
Filed: 1924-10-07
Abstract: 235,441. Morszeck, P. Oct. 7, 1924. Corner joints and strengthening pieces.- The walls of a trunk or the like are interconnected by means of a metal mount carried continuously around the end faces and preferably formed by pressing metal strip into the form shown in section in Fig. 1. The U-shaped arm 4 of the mount is passed over the end wall 1 and riveted thereto at 9, the other arm being secured to the side 2 the edge of which projects into the double bead 6, 7. The lip 8 on arm 4 is forced into a groove formed on the end, and the effect of forces such as A, B, applied to the double corner bead 6, 7, is stated to be to drive the lip more deeply into the groove. The usual reinforcing hoops 10 are applied to the outside of the arm 5.
Patent GB-501655-A (GB)
Title: Improvements in or relating to the isolation of minerals
IPC: B03B11/00
Filed: 1937-08-31
Abstract: 501,655. Endless chain conveyers. DU PONT DE NEMOURS & CO., E. I. Aug. 31, 1937, No. 23776. Convention date, Aug. 31, 1936. [Class 78 (i)] [Also in Groups II and I] The pan 109 of an endless scraper conveyer is formed of sections cut diagonally, the leading edges 137 of each section being depressed so that the flights 113 ride smoothly from one section to the next.
Patent GB-185424-A (GB)
Title: Improvements in spring suspensory apparatus for motor vehicles and the like
IPC: B60G11/04
Filed: 1922-09-01
Abstract: 185,424. DesbruÞres, E. Sept. 1, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Frame components, forms of, and applying.- The longitudinal members A of the frame of a motor vehicle are of hollow formation to enclose the suspension springs B completely.
Patent GB-207854-A (GB)
Title: Improvements relating to temperature-regulating means for incubafors
IPC: A01K41/02
Filed: 1922-09-02
Abstract: 207,854. Charters, E. D. Sept. 2, 1922. Wick burners, flame-regulating in.-In an in. cubator of the type in which the temperature is regulated by means of a thermostat for varying the size of the heat-producing flame, a flat wick burner 3, Fig. 4 is employed in combination with a regulator comprising two pivoted shutters 11, 12 arranged on opposite sides of and movable simultaneously towards or away from the burner, the free edges of the shutter being adapted to meet over and extinguish a portion of the flame. Each shutter is provided with a notch 22 at one of its upper corners so that a pilot light is left when the shutters are in the closed position, the size of the pilot light being adjustable by means of a sliding slotted plate 23 mounted on one of the shutters adjacent to the notch 22. The shutters 11, 12 are mounted on shafts 13, 14, the rotary movements of which are controlled by a thermostat 25, Fig. 2, located within the incubator through the medium of levers 27, 31, 32, and a rod 19 carrying at its lower end a plate 18 having a number of openings into one of which the hooked end of an operating rod 15 is engaged. A thermostat. 35 disposed between the levers 31, 32, effects an adjustment of the shutters according to the external temperature.
Patent GB-1169670-A (GB)
Title: Azo Dyestuffs
Inventor: HAUBRICH HEINZ
IPC: C09B45/46
Filed: 1968-05-20
Abstract: 1,169,670. Monoazo dye lakes. FARBENFABRIKEN BAYER A.G. 20 May, 1968 [3 June, 1967], No. 23912/68. Heading C4P. The invention comprises the red Ca and Mn lakes obtained by treating the monoazo dye 2 - amino - 5 - nitrobenzene - sulphonic acid # 2 - hydroxy - 3 - carboxy - naphthalene-6- sulphonic acid with a calcium and/or manganese salt.
Patent GB-1134723-A (GB)
Title: Heating element
IPC: H05B3/56
Filed: 1967-05-23
Abstract: 1,134,723. Electric heating elements. KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE A.G. 23 May, 1967 [2 July, 1966], No. 23917/67. Heading H5H. A resistance heater comprises a resistance wire 1 surrounded by insulation 2, e.g. asbestos or glass fibres and enclosed in a seam welded corrugated metal sheath 3. The resistance wire may be wound on a core. The metal sheath is made of stainless steel or copper and the corrugations are helical about the axis of the sheath. The corrugations make the heater more flexible.