baber/WOPTO huggingface dataset:
Patent GB-892590-A (GB)
Title: Preparation of new compounds of the tetracycline series
IPC: C07C233/00
Filed: 1959-01-28
Abstract: The invention relates to tetracyclines of general formula <FORM:0892590/IV (b)/1> wherein R1 and R2 are 1 to 4 C alkyl or together with the attached N form a heterocyclic ring and wherein X is hydrogen or chlorine.  The tetracyclines are produced by reacting a tetracycline of the general formula <FORM:0892590/IV (b)/2> with formaldehyde and a secondary amine of formula <FORM:0892590/IV (b)/3> wherein R1 and R2 and X are as defined above.  The temperature of reaction is 0 DEG C.-50 DEG C. and preferably 20 DEG C.-25 DEG C. Typical starting tetracyclines are 6-demethyltetracycline and 7-chloro-6-demethyl tetracycline.  Suitable secondary amines are dimethylamine, diethylamine, dipropylamine, piperidine, pyrrolidine, morpholine and piperazine.  The compounds possess the broad-spectrum activity of tetracyclines and are water-soluble and aqueous solutions may be used orally or parenterally.ALSO:Aqueous solutions of tetracyclines of general formula <FORM:0892590/VI/1> wherein R1 and R2 are 1 to 4 C alkyl or together with the attached N form a heterocyclic ring and wherein X is hydrogen or chlorine are used orally or parenterally and possess the broad spectrum activity of the tetracyclines.
Patent GB-309656-A (GB)
Title: Improvements in or relating to joints for pipes or tubes
IPC: F16L17/073
Filed: 1928-01-31
Abstract: 309,656. British Mannesmann Tube Co., Ltd., and Smith, E. S. Jan. 31, 1928. Grant of Patent refused. Cup-leather, overlap joints; spigot joints with divided sleeve.- In a pipe joint wherein the adjacent ends of the pipes are drawn together by a two-part housing member 3, having inclined surfaces adapted to engage inwardly directed flanges 5 on the pipe ends, and fluid-tightness is secured bv a bifurcated elastic ring 1 positioned between the said flanges, the packing ring is formed with recesses that engage both the inner and upper surfaces of the pipe flanges as shown.
Patent GB-998627-A (GB)
Title: Improvements in or relating to electric relays
Inventor: BUTTERWORTH EDMUND MORTON
IPC: H01H50/54
Filed: 1963-01-25
Abstract: 998,627. Electromagnetic relays. B. & R. RELAYS Ltd. Jan. 16, 1964 [Jan. 25, 1963], No. 3204/63. Heading H2B. A resilient movable contact blade 42 of a relay is mounted on an inelastically deformable, e.g. brass, support 43 so that the contact pressure between co-operating contacts can be adjusted by bending the support. As shown, two change-over contact sets such as 35, 36, 41 are mounted side-by-side in a recessed base 20. The contact blades 42 are actuated by a T-shaped member 44 slidable in a slot 45 in the base. An L-shaped member 31 attached to armature 28 engages the member 44. Plug-in pins 10 . . . 17 are provided on the base.
Patent GB-876543-A (GB)
Title: Electric control systems for tape transport motors
IPC: G11B15/18
Filed: 1959-01-29
Abstract: 876,543. Control of several D.C. motors. MINNESOTA MINING & MANUFACTURING CO. Jan. 29, 1959 [Jan. 31, 1958], No. 3265/59. Class 38 (3). [Also in Group XXXVIII] Magnetic tape 13 is normally passed from a pay-out reel 1 to a take-up reel 3 over guide-posts 15, 15<SP>1</SP> and 23, 27, as well as rollers 17, 17<SP>1</SP> which are mounted on tension arms. Movement of the tape over a disc 30 causes a drag switch 33 to close contact 34 or 35 in accordance with the direction of travel, this switch being used to reverse the torques of the reel motors for a period sufficient to bring the tape to rest, and to discontinue the application of reverse torque when the direction of motion of the tape changes. A motor 31 is adapted to drive a capstan 29 in contact with the tape as it approaches and leaves transducer head 25, whilst the reels 1, 3 are respectively coupled to motors 9, 11. When the tape-transport mechanism is stopped, the armatures of the motors 9, 11 are supplied through resistors D, E respectively so as to provide low torque in opposite directions on the tape. The capstan motor 31 is not in driving engagement with the tape, the friction rollers being out of pressing relationship due to the action of solenoids 61. Momentary actuation of push-button 57 energizes the capstan motor and engages it with the tape when the motor has reached full speed. The armatures of the motors 9, 11 are now supplied through resistors A or B and C whereby small opposed torques are provided by the reel motors. This corresponds to the normal-run condition. Fast-forward operation is afforded by actuating push-button 55 which operates relay 55<SP>1</SP> but releases any of the other push-button controlled relays, and disconnects the capstan motor drive. The armature of the motor 9 is supplied through resistor G, and the take-up motor 11 is provided with full armature current and field excitation so that the motor 9 feeds out tape at a high speed for winding on the take-up reel. When the tape has run out or is broken, a light-sensitive unit 73 operates relay 73<SP>1</SP> to stop the motors. Fast-rewinding operation is afforded by actuating push-button 53 to reverse the field excitation of the motor 11 the armature of which is now energized through the resistor G to provide the proper reverse torque. The motor 9 has its armature connected directly to the power supply, and its field winding is excited through transistor 70 which is fully conductive. When a stop pushbutton 51 is actuated, the current supplied to the motors 9 or 11 is reversed until the reels stop and reverse for a few degrees of rotation in the opposite direction. The appropriate relays are energized through the drag switch 33 until the tape comes to a standstill and begins to move in the opposite sense, whereupon all relays are released. If a main switch is inadvertently opened when the tape is running, a relay 49 is maintained energized due to the discharge of a capacitor (not shown) and the reel motors are not disconnected until they have been braked to a standstill.
Patent GB-574649-A (GB)
Title: Process for the preparation of penicillin and similar fungus decomposition products
Filed: 1943-03-01
Abstract: Penicillin or a similar product of fungus metabolism is made by a fermentation process in vessels provided with supports for the mould mycelia.  These supports which are placed about 20-25 cms. apart may be floating pieces of wooden laths or canes, or closed tubes of metal or synthetic material; or fixed parallel strips made of wood, metal or synthetic material arranged to form a series of staggered baffles extending nearly the whole width of the vessels.  The process may be either intermittent or continuous and in the latter case the vessels may be arranged in a series in the form of a cascade in which the outlet of each vessel leads to the inlet of the vessel below it, and the depth of the fermenting liquor may be increased to about 3 cms. In a further modification the vessels may be open at the top in the form of a flat tray, and several such vessels are totally enclosed in a jacket.
Patent GB-905101-A (GB)
Title: Process for separating a mixture of gases into fractions by selective permeation through membranes
Inventor: WOLF FRIEDRICH
IPC: B01D53/22
Filed: 1961-01-27
Abstract: In a process for separating a gas mixture comprising a polar gas by preferential diffusion through a membrane, said membrane comprises a synthetic ion exchange resin.  The membrane may comprise a cation exchange resin and/or an anion exchange resin. The resin may contain both cation and anion exchange groups. Polar gases and vapours, e.g. alcohols (methanol, ethanol) or gases containing ester, carboxylic acid, carbonyl, acid chloride or ether groups diffuse through the membrane more rapidly than non-polar or weakly polar gases and vapours such as benzene and toluene.  Preferably the gas mixture to be separated is brought into contact with one surface of the membrane while an inert gas, e.g. air is passed in contact with the other side.  A plurality of membranes may be used and the gas which diffuses through a membrane passed to a succeeding membrane. Specified resins are (1) produced from formaldehyde and a phenol or phenol sulphonic acid, (2) produced from polyethyleneimine or epichlorhydrin and an amine, (3) substituted or unsubstituted polystyrene, or polystyrene sulphonic acid, cross-linked with divinyl benzene into which strongly basic or strongly acidic groups are introduced, e.g. basic groups by chloromethylation, amination and quaternation.  Supporting tissue or inert binders, e.g. polyethylene, may be present.  In the example, a cation exchange resin prepared from phenol, phenol sulphonic acid and formaldehyde was dried, ground, dispersed in methylene chloride together with polyvinylchloride and poured out to form a membrane on glass-fibre supporting tissue.ALSO:In the example a cation exchange resin prepared from phenol, phenol sulphonic acid and formaldehyde was ground, and 84 parts by weight dispersed in methylene chloride together with 16 parts by weight of polyvinyl chloride.  The dispersion was poured out to form a membrane on a glass-fibre supporting tissue.
Patent GB-1533978-A (GB)
Title: Starter motor for an internal combustion engine
IPC: F02N15/06
Filed: 1976-01-16
Abstract: 1533978 Electric starter motor LUCAS ELECTRICAL CO Ltd 16 Jan 1976 [25 Jan 1975] 3352/75 Heading F1K To ensure that a solenoid assembly 21, whose armature 22 actuates a switch controlling the electric motor 12 of a starter motor as well as driving the pinion assembly 15 into and out of engagement with an engine starter ring, will operate said switch if the pinion assembly is prevented from engaging or disengaging the ring, a resilient lever assembly 24 inter-connects the pinion assembly and the armature so as to permit, by flexing, the required armature travel without movement of the pinion assembly, the lever assembly 24 having a pivot arrangement 28 such that the mechanical advantage of the lever assembly is reduced as the pinion is driven into the engagement position. The force provided by the flexed lever assembly ensure clean engagement/disengagement when the impediment to engagement/disengagement is removed. The lever assembly comprises a lever 25 and a support strip 26 arranged so that the support strip does not engage lugs 29a and thus is effective only in the engagement operation. The pivot assembly 28 may comprise a curved surface or two independent pivot points 33, 34 Fig. 2. The force applied by the lever assembly in the engaged position may be adjusted by an arrangement Fig. 3 replacing the extention 22a.
Patent GB-121138-A (GB)
Title: Improvements in or relating to Regulating or Controlling Systems for Electric Motors.
IPC: H02P7/06
Filed: 1917-03-07
Abstract: 121,138. Electric & Ordnance Accessories Co., and Etchells, J. March 7, 1917. Systems for continuous - current motors only. - The starting-torque of a shunt or compound wound motor A, F is increased by placing in the circuit of the field winding F a resistance R controlled by a vibrating regulator C of the kind described in Specification 114,320, while a switch 10 combined with the regulator is adapted to open or introduce a resistance R<1> into the circuit of the armature A on the occurrence of an overload. The regulator C may operate on a portion of the field winding F and the switch 10 be hand-set; or it may operate as a relay to control resistance sections through the intermediary of electro-magnetic switches.
Patent GB-1204781-A (GB)
Title: Improved process for effecting counter-current contact between gas and liquid streams
Inventor: WHITON LOUIS CLAUDE
IPC: B01J19/30
Filed: 1968-01-23
Abstract: 1,204,781. Gas scrubber. UNIVERSAL OIL PRODUCTS CO. 23 Jan., 1968, No. 3396/68. Heading B1R. A gas scrubber comprises one or more beds of lightweight contact elements fluidised by upflowing gas and wetted by a liquid spray 8, the or each bed of elements being confined between perforated grid members and the lightweight elements constructed so that gas and liquid can readily flow in and out of one or more cavities therein. The elements may be in the form of apertured hollow spheres or hollow half-spheres. The hollow half-spheres may have a thickened peripheral edge to prevent tight-nesting of the elements. Modified elements may be in the form of cubes or half-spheres of an open-foam type of material such as may be produced from polyurethane.
Patent GB-856035-A (GB)
Title: An improved folding chair
IPC: A47C4/34
Filed: 1958-02-03
Abstract: 856,035. Folding chairs. BROWN, A. T. Feb. 2, 1959 [Feb. 3, 1958], No. 3399/58. Classes 52(2) and 52(3) In a chair having pairs of legs 1, 2 connected by pivoted X form braces 3, 4 to fold into a bundle the upper ends of the braces are pivoted to clips 7 which slide on the legs and the seating fabric 11 is carried by detachable or rule-jointed bars 9 which maintain the frame in erected position.
Patent GB-1500617-A (GB)
Title: Electric lamps
IPC: F21V23/00
Filed: 1975-01-27
Abstract: 1500617 Electric battery lamps MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd and AOKI ELECTRIC INDUSTRIAL CO Ltd 27 Jan 1975 [4 Feb 1974 6 Feb 1974 7 Feb 1974] 3405/75 Heading F4R A portable battery-operated electric light comprises a body 8 having a portion 2 for holding dry cells and a handle portion 6, an arm 10 pivoted to the body at one end of the handle and a head 20 pivoted at the other end of arm 10, head 20 including a reflector 76 (Fig. 4) a first light-transmitting window 16a in front of the reflector, a second light-transmitting window 18a behind the reflector and a sliding switch 12 having three positions, a forward position in which bulb 14 is switched on and is displaced into the reflector through aperture 78, a rear position in which it is switched on and is retracted from the reflector, and an intermediate position in which it is switched off and lies in aperture 78. The device may function as a temporarily stationary search light as shown in Fig. 2, or by locating arm 10 in slot 4 of handle 6 as a portable torch (Fig. 1, not shown) or, by extending arm away from the handle and standing the device on its opposite end, as a lamp (Fig. 3, not shown) in which case bulb 14 is retracted and shines through window 18a. A cover 83 in front of bulb 14 seals aperture 78 when the bulb is retracted. A spare bulb may be stored in chamber 28 (Figs. 8, 9, not shown). The bulb mounting includes member 124 slidable with switch actuation member 106. The switch mechanism includes sliding contact 140 also mounted on member 121 and fixed contact 94. In the intermediate position shown, sliding contact 140 is spaced from intermediate portion 102 of fixed contact 94, and is movable forwardly to contact portion 98 or rearwardly to contact portion 100.
Patent GB-703959-A (GB)
Title: Temperature and ventilation control apparatus for buses
IPC: B60H1/00
Filed: 1952-02-08
Abstract: 703,959. Heating and cooling vehicles. VAPOR HEATING CORPORATION. Feb. 8, 1952 [Feb. 16, 1951], No. 3419/52. Class 64(2) [Also in Group XXXV] The temperature of the interior of a motor bus is controlled by blowing air over either a heater coil or a refrigerating coil (manually selected), the proportion of outside air to recirculated air being controlled by a first thermostat responsive to bus temperature, and the supply of hot water to the heater coil being controlled by a second thermostat responsive to bus temperature, the first thermostat being biased to operate at a lower temperature than the second when heating and vice versa when cooling. The outside air is drawn in at the front of the bus and passes down a central duct 19 to a blower 22, cooler 23, and heater 24. Air from within the bus is drawn into the duct 19 past a motor-driven' damper 28 which in its extreme positions closes the duct either to the outside air or to the recirculated air. The treated air passes into the bus through ducts 26, Fig. 2, arranged in the roof. The heater 24 is supplied with hot water from the bus engine through a control valve 37. The cooler 23 is unspecified.
Patent GB-960635-A (GB)
Title: Pipeline plugger
IPC: F16L55/105
Filed: 1961-01-30
Abstract: 960,635. Pipe stoppers. T. D. WILLIAMSON Inc. Jan. 30, 1961 [Oct. 10, 1960], No. 3438/61. Heading F2P. A pipe plugger has a housing 10 for mounting over an opening in a pipe and in sealed relationship therewith, and includes a rod 12 universally mounted and slidable within the housing and means for providing a seal therebetween, means 11 being attached to the rod to plug that portion of the pipe to one side of the opening therein by manipulation of the rod when the housing is mounted on the pipe. As shown, a resilient seal 14 having an annular lip 15 is clamped between a plate 11 and a support 17 secured to the rod 12; alternatively, an 0-ring is disposed in a groove in the support. A rod 27 facilitates manipulation of the rod 12 and seating of the plug 11. In modifications, the rod 12 is universally mounted in the housing by a ball 52, Fig. 4, or a ring 86, Fig. 8. Specification 804,790 is referred to.
Patent GB-653383-A (GB)
Title: Method of removing surface contaminants from metallic contact pins of bases for electric lamps, electric discharge tubes, radio tubes and the like, and of forming thereon a surface layer of good electrical conducting properties
IPC: H01J19/66
Filed: 1947-02-05
Abstract: Metallic contact pins (e.g. of chromeiron alloy), of "lamp" bases (i.e. bases of electric discharge tubes, radio tubes &c.) are cleaned of surface contaminants and given a surface layer of good electrical conductivity by opplying to the pins a thermally disociable noble metal compound (e.g. silver oxide), capable of reacting with the contaminants, and heating to produce said reaction and to cause the compound to dissociate to the noble metal and the noble metal to sinter on to the surface of the pins. The compound may be applied to the pins after they have been sealed into the lamp base, the heat being applied during a subsequent stage in the manufacture of the lamp.  A suspension of 3-25 (preferably 8-15), parts by weight of silver oxide and 1 part by weight of lead borate in ethylene glycol is referred to as a satisfactory coating mixture.
Patent GB-449699-A (GB)
Title: Improvements in or relating to planting potatoes and machines therefor
IPC: A01C9/00
Filed: 1935-02-02
Abstract: 449,699. Implements for working land; distributers for manures and potatoes. ROSS, A. F., Rosslea, Girvan, Ayrshire. Feb. 2, 1935, No. 3493. Addition to 415,492. [Class 6 (i)] A furrow-making and dibbling machine, on which potato-planting and manure-distributing apparatus may be mounted, has dibbling appliances arranged to act in the path of each land wheel and other dibbling appliances arranged to act in the wake of each plough or other furrow-forming device, except one, so that during each course the machine dibbles both previously and freshly-formed furrows and leaves undibbled one freshly-formed furrow, like the apparatus described in the parent Specification. The wheel-following dibblers may be carried by the pivotally-mounted forks 3 which carry the track markers. They are carried by axles 4 mounted in the forks 3, and each comprises spokes 6 and conical heads 5. Each marker 7 is carried by a loosely mounted shaft 8 provided with a handle 9. When the marker is operative the handle 9 bears against a projection 11 and it is moved out of operation by bringing the handle 9 over a projection 10. The length of the markers 7 may be such as to hold the dibblers out of contact with the ground when the markers are in action. A dibbler and its associated marker may thus be put into or out of action separately. The plough-following dibbling appliance is carried by a shaft 12 projecting from a sleeve 13 on the reduced end of a shaft 15 which is attached to a bracket 16 on the machine. This dibbler may be turned about the shaft 15 to bring it into position behind either the plough 18 or the plough 19, and is locked in either position by the engagement of projections 21 with notches under the action of a spring 22. In a modification, conical dibbling members are mounted on the rims of the travelling wheels 1. The plough-following dibbler may be movable along a transverse bar, or may be carried by a rod movable in a horizontal plane about a pivot. If there are three or more ploughs the multiple-wheel dibbler described in the parent Specification may be used. The dibblers may be weighted, and the wheel-following dibblers may be attached to the frame of the machine. Manure may be distributed broadcast or in the furrows by distributing mechanism arranged in front of the dibblers. Potatoes may be dropped into the dibbled holes either mechanically or otherwise, a potato box being provided for each dibbler.
Patent GB-801965-A (GB)
Title: Improvements relating to level crossings for model railways
Inventor: JACKSON RUDOLPH CECIL
IPC: A63H19/32
Filed: 1955-02-07
Abstract: 801,965. Model railway level crossings. ROVEX SCALE MODELS, Ltd. March 2, 1956 [Feb. 7, 1955], No. 3509/55. Class 132(3) In Fig. 2, a level crossing for a model railway comprises a base plate 1 carrying four posts 7 each pivotally supporting a gate 4 having a downwardly projecting pin 10 which passes through an arcuate slot 11 in the base 1. Two levers 12 pivoted at 13 are slotted at their ends 14 to receive the pins 10, and wire members 16 connected to the levers are connected at their other ends to a strip 17 slidably mounted on the base and movable by a cord 19 on pulleys 21. The gates and their pins 10 are normally urged to the position shown by the action of springs 15 on the pivoted levers. 12 but on sliding the strip 17 away from the pivot 13 the levers are rocked such that the pins 10 are moved to the other ends of their arcuate slots 11. The gates are thus moved to the position in which they are closed to the passage of trains. Gate stops 36 are provided on the base. In a modification, Fig. 4, the levers 12 have spring wires 25 between which the pins 10 are located, the connection being sufficiently positive for moving the gates by rocking the levers but having enough resiliency to prevent damage when the gates are moved manually. Movement of the strip 17 is controlled by a resistance wire 26 which passes over a pulley 27 and is secured at its other end to a terminal 29. On passing a current through the wire 26 via supply sockets 31, the wire lengthens and the strip 17 moves towards the terminal 29 thus allowing the gates to pivot to their other positions under the action of springs 15. According to the Provisional Specification the gates may be controlled by a handle connected to the pivoted levers. Remote control by electric motor or solenoid is specified. Two "pedestrian" gates may be provided.
Patent GB-812685-A (GB)
Title: Improvements in and relating to the moulding of ornamental figures
Inventor: BOOTH LEONARD FREEMAN
IPC: B44C3/04
Filed: 1955-02-07
Abstract: 812,685. Moulds for ornamental figures. BOOTH & CO. Ltd., L. F. Feb. 6, 1956 [Feb. 7, 1955], No. 3517/55. Class 87(2). [Also in Group XV] A rubber mould 3 for making ornamental, e.g. human or animal figures is provided with ridges 3 to form grooves in the cast figure. The grooves acting as a keyway for securing trimming materials, e.g. lace of feathers.