baber/WOPTO huggingface dataset:
Patent GB-734535-A (GB)
Title: A process for the production of unsaturated amine salts and amines
IPC: C07C209/74
Filed: 1952-12-22
Abstract: A process for the production of an unsaturated amine salt comprises eliminating a hydrogen halide from an aliphatic amine salt halogenated in the carbon chain by heating the salt in the absence of water to a temperature within the range 100 DEG  to 300 DEG  C. The temperature is preferably 160 DEG  to 230 DEG  C.  The reaction may be effected in the absence of catalysts or in the presence of such catalysts as activated fuller's earth or activated bleaching earths of the aluminium hydrosilicate type, activated carbon, and metal halides such a aluminium chloride and zinc chloride.  The process is applicable to the treatment of primary, secondary and tertiary amines.  In examples: (1) chlorinated n-hexylamine hydrochloride containing 1 gram atom of chlorine per gram mol. is heated at 180 DEG to 230 DEG  C. in a stream of nitrogen.  Determination of the ozone iodine number of the product showed that 90 per cent dehydrochlorination had taken place.  The free unsaturated base was liberated by treatment with an alkali metal hydroxide solution; (2) chlorinated n-hexylamine hydrochloride containing 1 gram atom of chlorine per gram mol. is heated at 160 DEG  to 190 DEG  C. with bleaching earth to give an unsaturated amine; (3) and (4) a similar process to (1) is applied to (3) chlorinated n-octylamine containing one gram atom of chlorine per gram mol. and (4) to chlorinated n-butylamine containing one gram atom of chlorine per gram mol.
Patent GB-262604-A (GB)
Title: Improvements in and relating to surface grinding machines
IPC: B24B47/06
Filed: 1925-12-23
Abstract: 262,604. Lumsden Machine Co., Ltd., and Lumsden, W. S. Dec. 23, 1925. Liquid-pressure engines.-The worktable n of a surface grinding machine is reciprocated on a bed p by a fixed hydraulic cylinder q in which is movable a piston r having a rod r<1> extending in opposite directions through brackets n<1> on the table, stops r<2> being provided on the rod to allow slight free movement thereof before the stops contact with the brackets; by this means, the rod is always in tension during operation of the machine. The movement of the table is reversed at the ends of its strokes by means of a valve t in the fluid supply pipe t' from a pump u, the valve being moved by a lever w engaged by dogs n<2> on the table, and one or more throttle valves y, z<1>, and a by-pass z for the cylinder may be employed, whereby the speed of the table may be varied.
Patent GB-219584-A (GB)
Title: Improvements in pendular machine tools
IPC: B27B5/18
Filed: 1923-12-29
Abstract: 219,584. Bloch, L. Dec. 29, 1923. Feed-motions.-A circular saw or other tool d is given a straight-line feed-motion by means of the jointed frames f, c and a link b pivoted to the frame c. Guide pulleys m, k, are provided for a driving belt, the latter pulley k on a spring mounted lever. A weight n tends to pull the saw up to the bracket a.
Patent GB-338698-A (GB)
IPC: A62B23/00
Filed: 1929-10-25
Abstract: 338,698. Beckmann, H. Oct. 26, 1928, [Convention date]. Addition to 240,430. Latex, coagulating; porous indiarubber.-The process for producing micro-porous rubber described in the parent Specification is modified by adding to the latex a substance capable of being coagulated to form an hydrophilic gel, and then treating the mixture with a coagulating agent adapted to coagulate both the latex and the additional substance. The resulting gel is then vulcanized. Suitable colloid substances are silicic acid, stannic acid, aluminium hydroxide, colloidal ferric oxide, colloidal chromic oxide, colloidal tungstic and molybdic acid, manganic hydroxide, vanadium pentoxide, tetanic acid, albuminoids, polypeptides and haemoglobin. The substance need not be added as such but may be formed in the latex by reaction, for instance silicic acid may be introduced as sodium silicate. In an example, 2 per cent of blood albumen, calculated on the rubber content, is dissolved in water and added to latex in addition to the usual agents. Acetic acid is added and the mass is spread out in the desired shape or mould whereupon coagulation takes place. Specification 309,575 is referred to.
Patent GB-1479811-A (GB)
Title: Device for use in loading and unloading articles
IPC: B66C1/44
Filed: 1975-08-04
Abstract: 1479811 Rotatable grippers CETEC DRESSLER CONSTRUCTIONS ET ETUDES THERMIQUES ET CERAMIQUES 4 Aug 1975 [10 Sept 1974] 32563/75 Heading B8H A device for use in loading and unloading an article 40 comprises a frame or support body 1 which is suspended by a cable 31 of a hoisting mechanism 22 from a rotatable support (21, 25), Figs. 1, 2 (not shown), a pair of gripping arms 3 connected to respective carriages 2 which are movable in synchronism in the body 1 by means of respective hydraulic actuators 5 and a device 6 which ensures synchronization of the motion of the actuators 5, an articleengaging member 4 being hingedly mounted at the lower end of each arm 3, the members 4 being rotatable simultaneously in order to rotate an article held therebetween, such rotation of the members 4 being effected by an actuator 8 whose cylinder is fast with the body 1 and whose piston rod is connected to a lever 50, so that on actuation of the actuator 8 the lever 50 is rotated which in turn causes a shaft 51, lever arms 52 and shafts 53 to be rotated, the shafts 53 being pivotally connected through respective supports 54 to a respective lever arm 55, each lever arm 55 being fast with an articleengaging member 4. The supports 54 are movable with the gripping arms 3 due to the engagement of rollers 56 with the shafts 53. The movement of the arms 3 and the rotation of the members 4 is controlled by an operator from control boxes 60 mounted on the body 1.
Patent GB-651570-A (GB)
Title: Improvements in and relating to electric circuits
IPC: H03K7/00
Filed: 1949-12-20
Abstract: 651,570. Generating high-frequency oscillations; pulsing carrier frequencies. BRITISH TABULATING MACHINE CO., Ltd. Dec. 20, 1949, No. 32620. Convention date, Dec. 29, 1948. [Class 40 (v)] A ringing oscillator comprises a resistor 16, rectifier 17, and resonant L.C. tank circuit 10, connected in series from a voltage supply line 15 to a voltage supply line 18 having a lower potential than the line 15, the rectifier offering its lower resistance to current flow from the line 15, whereby a steady current normally flows through the tank circuit. A double triode 20, which is normally biassed to cut-off, has its anodes connected together and to the junction of resistor 16 and rectifier 17, and its cathodes connected together and earthed, the control grids being connected through resistors 22 to a source of gate pulses. When a gate pulse is applied to the valve 20 it becomes conductive and the potential at point 21 is reduced, to interrupt the flow of current in the tank circuit and shock it into oscillation, removal of the gate pulse causing the tank circuit to be critically damped and the steady flow of current resumed. The load is connected at 14 and may be an acoustic delay line, the input capacitance of the load being represented by capacitor 12, and the rectifier 17 may be a germanium crystal diode.
Patent GB-351876-A (GB)
Title: Improvements in means for controlling the ignition of internal combustion engines
IPC: F02P5/05
Filed: 1930-10-31
Abstract: 351,876. Controlling tractors, lawnmowers, &c. PUGH, Ltd., C. H. and STARKEY, E. W., Whitwork Works, Tilton Road, Small Heath, Birmingham. Oct. 31, 1930, No. 32730. [Class 79 (v).] The ignition timing of an engine driving a machine such as a tractor, lawn mower, &c., is controlled by an engine-clutch lever so connected to a rotary timing device that when the lever is moved out of its normal plane of movement into engagement with a gate or catch to hold the clutch free it causes the ignition to be retarded while when moved out of said gate it causes the ignition to be advanced. In the construction shown applied to a lawn-mower the clutch 1, of the kind described in Specifications 192,854 and 296,236, [both in Class 6 (ii), Gardening &c. appliances], is engaged and disengaged by horizontal movement of a lever 5 in a slot 10, the clutch being held disengaged against the pressure of its springs when the lever is lowered into the position shown in Fig. 3 so as to be held by a catch 9 in a gate 6. The lever carries an arm 23 bearing against a cam or bar 22 fixed to an arm 21 on a rock shaft 19 controlling the ignition timing device 16, so that when the lever is lowered below the catch 9 the shaft 19 is rocked in a direction to retard the ignition and when the lever is raised to the position in which it can, by movement along the slot 10, cause the clutch to engage, the ignition is advanced. Movement of the lever in the slot 10 merely causes the arm 23 to slide under the bar 22 without affecting the ignition, the bar 22 being held against the arm by a spring 24. As the clutch lever moves in the slot 10 to the engaging position it abuts against the plunger 11 of a dashpot, so ensuring a smooth engagement of the clutch, as described in Specification 296,236.
Patent GB-1427592-A (GB)
Title: Linkage mechanisms
IPC: A47C1/0355
Filed: 1973-02-27
Abstract: 1427592 Rocker-recliner chair ROYAL DEVELOPMENT CO Inc 27 Feb 1973 32771/75 Divided out of 1427591 Heading A4J In a rocker-recliner chair, a keeper 186 which is pivotally connected to the rocker-cam frame is moved into a passage 184 on a member fixed to the base of the chair as the footrest is extended to lock the chair against rocking movement. The keeper 186 is connected via a link 200 and crank 204 to a cross-bar 150 which inter-connects the linkages on each side of the footrest.
Patent GB-442931-A (GB)
Title: Improvements in and relating to the formation of rubber threads or the like
IPC: B29D99/00
Filed: 1934-05-12
Abstract: 442,931. Rubber threads. SHEPHERD, T. L., 7, Park Lane, London. May 12, 1934, No. 32778/35. Divided out of 442,935. [Class 70] A process for producing rubber thread or the like consists in applying latex or like dispersion to a wire or yarn, bringing the latex into contact with coagulant, withdrawing the treated latex, stretching it before it is fully coagulated, and completing the coagulation. As shown, a wire or yarn 1 coated with latex is run over a roller 2 running in a bath 3 of coagulant. The partially coagulated rubber tube formed is split and removed from the wire, stretched, and fully coagulated. Specification 441,124 is referred to.
Patent GB-1119301-A (GB)
Title: Monitoring instrument
Inventor: ANNABLE PAUL GOODWIN
IPC: B28C5/42
Filed: 1965-07-30
Abstract: 1,119,301. Counters. CONNECTICUT RESEARCH ASSOCIATES Inc. 30 July, 1965, No. 32827/65. Heading G4D. [Also in Division G1] Monitoring apparatus discriminating between motion cycles of different speeds (so that, e.g. in the case of concrete mixed in transit, only mixing revolutions above a predetermined speed are counted) comprises a lug (on the mixing drum) actuating a switch 32 electrically connected to a solenoid 114 of a counter and a switch 116 disconnecting the switch 32 and counter solenoid 114 when opened by a relay 82 upon energization by a timing discriminator circuit 46 when it measures an elapsed time between cycles exceeding a predetermined minimum so that the counter only registers cycles performed above a desired speed. The switch 32 includes a movable contact 98 alternatively connecting a power source 40 (through line 90 and terminals B of mating plug and socket 94, 96) to the timing circuit 46 (through terminals A and line 100) or to the counter solenoid 114 (through terminals C and switch 116). The timing circuit 46 comprises a charging network with a resistor 138 and capacitor 140 so adjusted that when a conductor 124 has been energized (from conductor 100 through contacts 120) for say ten seconds the voltage across the capacitor 140 rises sufficiently to trigger a unijunction transistor 130 and the output pulse produced at its base 132 overcomes the negative back bias between emitter 146 and base 142 of a transistor 144 to turn it "on". The increased current through resistor 152 energizes a relay 122 which through contact 156 makes its holding circuit and connects collector 150 to the negative conductor 64 and through contact 120 re-energizes conductor 124 and energizes conductor 80 to actuate relay 82. The relay 82 is a dash pot or like timed release relay and ensures that the switch 116 remains open long enough. Besides modules 42 for the rotation counting switching, 44 for the counting circuit and 46 for time discriminating, the apparatus includes modules 41 for elapsed time, 48 for resetting a count indicator and elapsed time indicator and 50 for lock-operating in order to indicate th operative condition of the apparatus through green and red lamps 18, 20 and to disable the system whenever tampering has occurred. Each module has a plug and socket 94, 96 which must mate to complete the power line through pairs of conductors 110, 112. A coded plug has to be inserted in a socket 22 momentarily to energize relay 52 to reset the apparatus and initiate a new monitoring period.
Patent GB-1332947-A (GB)
Title: Cytological sampling device
IPC: A61B10/00
Filed: 1971-07-13
Abstract: 1332947 Cytological sampling device W H CURTIS 13 July 1971 [20 July 1970] 32905/71 Heading A5R A device for obtaining cytological samples from the female genital tract comprises an elongated handle 10 to which is attached a collector 12 of substantially conical shape and made of a soft, resiliently flexible material. The collector 12 has a rounded apex 14. The material of the collector 12 may be synthetic foam, for example polyurethane foam, having a porosity of between 4 and 40 pores per linear centimetre and a density of between 15 and 50 kilograms per cubic metre. A plate 13 may be attached to the base of the collector 12. The plate 13 may be made of rigid plastics material. A sample is obtained from the cervix or vagina by rolling the collector against the tissue, withdrawing the collector, and rolling it on a slide.
Patent GB-864838-A (GB)
Title: Improvements in or relating to transistors
Inventor: STRULL GENE
IPC: H01L29/00
Filed: 1957-10-23
Abstract: 864.838. Coating by vapour deposition. WESTINGHOUSE ELECTRIC CORPORATION. Oct. 23, 1957, No. 33082/57. Class 82(2) [Also in Group XXXVI] Composite metal layers are provided on opposed surfaces of a wafer of N type germanium by the following technique described with reference to Fig. 4. The wafer, parts of which are covered by masks 44, 48 of conductive material adapted to be heated by a current source 58, is mounted in a chamber which after flushing out with argon is evacuated to less than 0.1 Á of mercury. The heater filaments 64, 66 and 76, 80 containing pieces of aluminium and silver respectively are isolated from the wafer by movable screens 90, 94. After heating the wafer to above the eutectic temperature of aluminium and germanium the heaters 64, 66 are energized to melt the aluminium and evaporate off volatile impurities. The screens 90 are then removed and the filament temperature further raised to evaporate aluminium on the wafer. After further raising the temperature or maintaining it for 1-30 minutes to diffuse the aluminium into the wafer the wafer is removed and provided with masks of smaller aperture which mask the edges of the aluminium layers. The wafer is replaced in the evacuated chamber and a further layer of aluminium evaporated as before while the temperature of the wafer is gradually lowered from a temperature above the eutectic to a point well below it e.g. 300‹C. The temperature of the heaters 76, 80, energized shortly before to melt and purify the silver is then raised and screens 94 removed to evaporate aluminium and silver simultaneously on the aluminium layers. Shortly afterwards heaters 64, 66 are de-energized and after deposition of a further thin layer of pure silver, the wafer is removed from the chamber. The wafers are used in making semi-conductor devices (see Group XXXVI). Tin, zinc, lead and alloys thereof may be used in place of silver in the above processes, and wafers of silicon, silicon-germanium alloys and compounds of elements of Group III with elements of Group V of the periodic system used instead of germanium. Specification 864,837 is referred to.
Patent GB-472364-A (GB)
Title: Improvements in or relating to vaginal douches
IPC: A61M29/00
Filed: 1936-12-02
Abstract: 472,364. Vaginal douches ; specula. MELINI, V. Dec. 2, 1936, No. 33122. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 3, 1937.] [Class 81 (ii)] In a vaginal douche comprising a spray tube, a pipe adapted to deliver liquid thereto, a hollow casing carrying the spray tube and supply pipe, and having means to seal the vaginal opening, and being apertured for the outflow of the irrigating liquid, dilator members arranged around the spray tube, and means for operating the dilator members from the outside when the device is in position, the hollow casing has mounted therein a valve for regulation of the irrigating liquid, the valve being operable from the outside when the device is in use. As shown, a sheet metal casing 1 is closed at one end by a flange 3 on a valve body 2, the flange being apertured at 4 for the outflow of the liquid, a spray tube 8 is screwed into an axial bore of the valve body, the bore being tapered to form a seating for plug valve 24. A supply pipe 6 containing a filter 35 and passing through the casing wall screws into the valve body 2 and communicates with the valve seating by a passage 5. The plug has a blind axial bore 28 formed with a port 29 to register with passage 5, and is rotated by a spindle 18 mounted in a hollow boss 19 formed on a detachable cap 21 of the casing 1. Connection between the plug 24 and spindle 18 is effected by a pin 26a passing through a flat tongue 22 of the spindle engaging with a slot in the plug. The pin also secures a loose collar 26 accommodated in a recess 27 in the valve body whereby axial movement of the plug and spindle is prevented. The spindle is screw-threaded for engagement with a nut 16, the axial movement of which, due to the rotation of the spindle, causes the dilation or retraction of three dilator arms 11, each of which is pivoted to the flange 3 at 12 and is connected to the nut by a pivoted link 14. The device is so constructed that the valve remains closed until the arms 11 are dilated. Liquid flowing through apertures 4 escapes through pipe 7, the diameter of which is greater than that of the supply pipe 6. The casing 1 is formed with an annular groove into which is sprung a sponge rubber sleeve 30 constituting the sealing means. At its inner end, the sleeve is formed with an extending tongue 32, and at its other end with a flange 33, the outline of which is pear shaped, the apex 34 being disposed at the same side of the sleeve as the tongue 32.
Patent GB-332227-A (GB)
Abstract: 332,227. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). April 16, 1929. Diazonium salts of complex metallic fluoric acids are made by causing a complex metallic fluoric acid or a salt thereof to act on a diazonium compound. They may be used in dyeing and printing and for combating insect pests. Specified acids are titanium, aluminium, tin and antimony hexafluoric acids and antimony and zinc tetrafluoric acids. In examples, (1) tetrazotized dianisidine is treated with titanium hexafluoric acid; (2) diazotized 4-aminoazobenzene with aluminium hexafluoric acid, (3) diazotized 1-aminoanthraquinone with tin hexafluoric acid, and (4) diazotized m-nitraniline with antimony tetrafluoric acid. Diazo compounds from aminopolyazo compounds and also from polynuclear carbocyclic, mono- and polynuclear heterocyclic and mixed carbo-heterocyclic com. pounds may be similarly treated.
Patent GB-361578-A (GB)
Title: Improvements in or relating to the digestion of raw cellulosic materials for production of paper pulp
IPC: D21C3/26
Filed: 1930-11-05
Abstract: 361,578. Preparation of pulp. BERTRAM & SON, Ltd., J., BERTRAM, J. N., and GRAY, F. W., 141, Leith Walk, Edinburgh. Nov. 5, 1930, No. 33225. [Class 96.] Grasses, bamboo, reeds, wood, and the like are crushed and digested in two stages, comprising a treatment with a 1-4 per cent solution of caustic soda at a steam pressure up to 20 lbs. per square inch, after which the material is drained, subjected to vacuum, washed with hot water, again subjected to vacuum and treated with a 12-18 per cent solution of caustic soda or sodium sulphate, drained and submitted to a steam pressure of 40-100 Ibs. per square inch. When this solution is drained off, the material remains impregnated with the chemicals, the liquor being brought up to full strength and again used. The material is finally washed, the wash water being used for a preliminary impregnation. The digester employed contains a wire cage, or perforated inner lining to receive the raw material, suitable valves being provided for the admission of steam, liquor, and wash water, and for evacuation.
Patent GB-1156681-A (GB)
Title: Cooling of Hot Metal Rod
Inventor: SWALLOW REGINALD DENNIS
IPC: C21D9/573
Filed: 1965-08-04
Abstract: 1,156,681. Coiling rod. DAVY & UNITED ENG. CO. Ltd. 18 July, 1966 [4 Aug., 1965], No. 33299/65. Heading B3E. [Also in Division C7] Apparatus for cooling hot metal rod consists of a fluidized bed and a cradle into which the rod is coiled, the cradle being movable between a lower position in the fluidized bed vessel and an upper one above the vessel. Pusher means for discharging a complete coil from the cradle when the latter is in its upper position may also be provided. As illustrated, the cradle 18 has a horizontal grid base 20 suspended from arms 21 and is capable of being lowered into fluidized bed vessel 12, which has a channel 28 and pipes 30 for circulation of coolant. Rod from the mill is formed by coiler 14 into a coil 38, the cradle initially being either at its lowest position in vessel 12 or located with grid 20 just below the bed surface and gradually lowered as the coil develops. Formation of the coil is aided by pins 35 which project upward through grid 20. When the coil is complete and has cooled sufficiently to produce the desired metallurgical structure, the cradle 18 is raised and the coil removed to table 34 by pusher 32. The apparatus may be duplicated so that a single rolling mill feeds the two coilers alternately. Reference has been directed by the Comptroller to Specification 1,048,833.