baber/WOPTO huggingface dataset:
Patent GB-344020-A (GB)
Title: Improvements in electric switch mechanisms
IPC: H01H5/06
Filed: 1929-11-27
Abstract: 344,020. Snap-action switches. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., 11, Holborn Viaduct, London, WHEELER, H. S. and MOOR, E., of Henley's Telegraph Works, Gravesend, Kent. Nov. 27, 1929, No. 36323. [Class 38 (v).] The operating mechanism, including a handle 1, a spring 4 connecting the handle to a crank 13, and a catch 16 for retaining the crank 13 until the spring has been sufficiently strained, is mounted as a unit outside the switch casing, the unit being readily detachable as by removing a split pin 25 from the contact-carrying spindle 9 and sliding the unit off the spindle. The spindle 9 is of square section and carries non-rotatably a sleeve 6 which is also partly of square section and carries non-rotatably the U-shaped crank 13 and another U-shaped crank 14 carrying the catch 16. The crank 14 has a rectangular aperture and can slide relatively to the sleeve 6 under the control of a spring 15. The catch 16 engages a fixed arc-shaped slot 20 in the casing, this slot having recesses at both ends into one or other of which the catch is normally pressed by the spring 15. The handle 1 rotates about cylindrical portions of the sleeve 6 and when it is rotated, the spring 4 is strained but the parts 13, 14, 6, 9 are held by the catch 16 until cam shaped slots 18, 19 in the handle lift the catch 16 out of its recess and effect a quick action. Should the spring 4 fail, the switch is positively actuated by the engagement of the ends of the cam slots in the handle with the catch 16. In a modification the sliding crank 14 is replaced by a relatively stationary crank carrying a slidable catch.
Patent GB-765662-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H51/06
Filed: 1953-12-01
Abstract: 765,662. Electromagnetic relays. SIEMENS & GENERAL ELECTRIC RAILWAY SIGNAL CO., Ltd., and CANDLER, J. E. Dec. 1, 1953, No. 36431/55. Divided out of 765,661. Class 38(5) Energization of the coil 5 causes attraction of an armature 9 pivoted at 11 against core poles 7, 8, to operate contacts 3. The armature is arrested, when released, by the engagement of a non-magnetic pin 38' with a core shoulder 37, the pin being carried by a pole piece 36 of a permanent magnet 19 mounted on the armature. The magnetic axis of the magnet 19 is at right angles to the armature and thus the armature is magnetically latched in its released position. The poles 7, 8 have such a polarity when the coil 5 is energized that the shoulder 37 repels the pole piece 36. Two identical relays are mounted side-by-side (Fig. 2, not shown) with a centrally-pivoted bar whereby simultaneous attraction of the armatures is prevented. Windows (not shown) are provided in the housing 35 for observing the relay operation.
Patent GB-1460392-A (GB)
Title: Cupboard constructions system
IPC: A47B47/03
Filed: 1974-08-19
Abstract: 1460392 Cupboards I BARGET Ltd 12 Aug 1975 [19 Aug 1974] 36437/74 Heading A4B A built in cupboard includes spaced, channelsection uprights 1 each having re-entrant flanges 3, 5 at the free ends of its side limbs 2, 4, attachment blocks 7 each having a hooked part 8 which slidably engages a said re-entrant flange 3, 5, screws 11 engaged in screw-threaded bores 10 in the blocks 7 to lock the latter at selected positions along the uprights 1, and secondary bars 12 inter-connecting spaced uprights and adapted for securing to the blocks 7. The secondary bars 12 have apertured  lugs 13 which receive screws engaged in threaded bores 9 in the blocks 7. The cupboard may include doors, flaps 27, shelves, wall rails 16 with clips 17, hangers 26, drawers 23, and end panels 20.
Patent GB-615604-A (GB)
Title: Improvements in and relating to the bleaching of cellulosic matter
IPC: D06L4/23
Filed: 1947-12-10
Abstract: Cellulosic materials are bleached by means of aqueous hypobromite solutions which are kept at a pH value between 7 and 8.2.  The hypobromite bleaching may be preceded or followed by a hypochlorite bleaching stage, and in the hypochlorite stage a bromide may be present as described in Specification 596,192 or 596,193.  In examples: (1) sulphite pulp is chlorinated, washed with aqueous sodium hydroxide and then treated with a solution of potassium bromide and a solution of bleaching powder added slowly so that at no time does the mixture produce a blue colour on potassium iodide-starch paper, the pH being kept meanwhile at 7.5-the pulp is then successively treated with water, aqueous sodium hydroxide, water, hypochlorite, and sulphur dioxide; (2) kraft pulp is treated with bleaching powder, washed, treated with sodium hydroxide solution, washed, treated in two stages with bromide of lime or a mixture of potassium bromide and an equivalent amount of hypochlorite at a pH of 7.5, and finished by bleaching with bleaching powder, washing and after-treating with sulphur dioxide; (3) cotton piece goods are boiled with sodium hydroxide solution, washed, bleached with hypobromite at a pH of 7.5, washed, boiled with sodium hydroxide solution, washed and bleached in a second stage with hypochlorite; and (4) the process of (3) is repeated except that an amount of potassium bromide is added to the hypochlorite used in the second stage in an amount insufficient to produce a pure hypobromite liquor, and the liquor is kept at pH 7 to 7.5.
Patent GB-1387784-A (GB)
Title: Vortex tube
IPC: F25B9/04
Filed: 1973-08-01
Abstract: 1387784 Vortex tubes OWATONNA TOOL CO 1 Aug 1973 [2 Jan 1973] 36663/73 Heading F4H A vortex tube comprises an air inlet 30 in a body member 10 having a central recess 15 to receive a plug section 16 of a further member 11  secured to the body member 10 by attaching members (not shown), the air passing to an annular plenum chamber 22 for tangential flow through channels 23 to a vortex chamber 21, defined by a section 25 of the body member 10 and the plug section 16. An annular pervious filter screen 31 is positioned within the plenum chamber. The member 11 has a divergent cold air outlet passage 40 extending from the vortex chamber and the member 10 has a warm air outlet extension 45 providing a tubular passage 46. A nozzle and valve unit 50 having a restricted air passage 52 and insert 53 is threadably mounted on the extension 45 so that a transverse wall 51 thereof may be moved relative to the extension 45 to allow an adjustable volume of warm air from the passage 46 through a passage 60 in a peripheral wall 61 of the unit 50.
Patent GB-417245-A (GB)
Title: Improvements in and relating to welding machines
IPC: B23K11/11
Filed: 1932-12-28
Abstract: 417,245. Electric welding. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Dec. 28, 1932, No. 36699. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 29, 1933]. [Class 83 (iv).] A spot welding machine provided with two or more electrodes is held against the work by an electromagnet to facilitate welding on vertical or overhead surfaces. A double electrode c,d mounted in a casing is pressed against the work by a screw g engaging the core b of an electromagnet. The electrodes may be rigidly mounted in the casing or, as shown, may be operated through springs e, a stop i being provided to prevent the springs from falling out. The screw may be operated direct or through a lever or the pressure may be exerted by a motor. The welding current and current for energizing the electromagnet may be automatically switched off, the welding current being preferably switched off first, so that the pressure of the electrodes is maintained for a short period thereafter. If hand switches are used the switch for the electromagnet may be inserted in the primary circuit of the transformer. The limbs of the electromagnet core may operate on both sides of the work. The core may be subdivided so as to provide an air gap to weaken the flux therein when the apparatus is placed in position.
Patent GB-367414-A (GB)
IPC: G03C7/14
Abstract: 367,414. Projecting lenticular films. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. Nov. 12, 1930, No. 34072. Convention date, Nov. 21, 1929. [Class 97 (i).] In the projection of lenticular films the image of the source of light is caused to fall in the plane of the multicolour filter. As shown in Fig. 2, separate images Ar, Ag, Ab of the source of light A are produced in the plane of the multicolour filter E. As shown in Fig. 3, the separate images are obtained by the prism system C comprising upper and lower deflecting prisms C<1>, C<11> and a central blank space. As shown in Fig. 4, the separate images are obtained by a three-part concave mirror R, the individual part O, O<1>, O<11> being adapted to pivot about the axis P. As shown in Fig. 5, the source of light is an electric incandescent lamp with three parallel filaments A<1>, A<11>, A<111>.
Patent GB-1351649-A (GB)
Title: Magnetic recording and/or reproducing apparatus
IPC: G11B15/665
Filed: 1971-08-05
Abstract: 1351649 Video magnetic tape recording/ reproducing SONY CORP 5 Aug 1971 [11 Aug 1970] 36898/71 Heading G5R Magnetic tape recording apparatus, such as a cassette video tape recorder, includes an automatic tape guide device 31 which draws out magnetic tape from between a supply reel 26 and a take-up reel 27, wraps it around a drum 24 which contains a rotary-scanning magnetic head (25), Fig. 3 (not shown), and in front of a stationary magnetic head 106, and also includes a magnetic shield 117 which is brought in front of the stationary head 106 between tape runs L 1 , L 2  by the tape guide device 31 when the tape is in position. The tape guide device 31 includes a ring 32 rotatable in a clockwise direction around the drum 24 by a motor 35, the ring 32 supporting an arm assembly 39 which carries a tape-engaging member 38. Ring 32 is tilted downwardly with respect to reels 26, 27, as in Fig. 3 (not shown). As the tape loop L is drawn out around the drum 24 by member 38, guide pins 52-56 on the ring 32 enter the loop L and hold the outer run L 2  away from the drum 24. A roller assembly 57 is pivotally mounted on the ring 32 and includes two pinch rollers (60a), (60b), Fig. 4 (not shown), which press the tape against a motor-driven capstan assembly 66 when the ring 32 reaches a predetermined position, as in Fig. 2 (not shown). This is achieved by a pressing member 74 which is connected by a leaf spring 80 to a pivoted bell crank 77. Bell crank 77 is caused to pivot when an eccentrically mounted wheel 82 mounted thereon contacts the capstan assembly 66. This occurs when a latch 83 is released by a pin 86 depending from ring 32. A further member 125 which depends from ring 32 causes a plate 121 to rotate, to permit the permalloy magnetic shield 117 to rotate under the action of a hair spring (120), Fig. 8 (not shown), to a position in front of the head 106. Alternatively, Figs. 9, 10 (not shown), a permalloy shield (202) may be incorporated in a roller assembly (201) which includes a single pinch roller (204). A second stationary head (210) for erasing signals has a shield (211) identical to that of the first embodiment. Alternatively, Figs. 11, 12 (not shown), a permalloy shield (312) is fixed to a post (311) on the ring (301).
Patent GB-432685-A (GB)
Title: Improvements in or relating to metal tube and bar stock extrusion presses
IPC: E21D1/10
Filed: 1934-12-24
Abstract: 432,685. Breaking - pieces. EUMUCO AKT.-GES. FUR MASCHINENBAU, 10, Josefstrasse, Schlebusch, Leverkusen, and SCHNEIDER, A., 11a, Armulfstrasse, Oberkassel, D³sseldorf, both in Germany. Dec. 24, 1934, Nos. 36912 and 36913. Convention dates, Dec. 23. 1933 and Jan. 8, 1934. Addition to 408,187. [Class 80 (iv)] [See also Group XXII] The mandrel of a metal extrusion press carries a sleeve bearing within the extruding ram 1, and having a flange 21 adapted to shear if the sleeve seizes within the ram.
Patent GB-1415293-A (GB)
Title: Electrical testing apparatus
IPC: G01R31/3193
Filed: 1971-08-05
Abstract: 1415293 Testing I C units GRAZEBROOK VINT LABORATORIES Ltd 6 Nov 1972 [5 August 1971] 36919/71 Heading G1U An automatic testing arrangement of the type in which a sequence of test signals is applied to both a circuit under test and to a reference circuit and the output signals are compared, any disagreement producing a fault indication and stopping the sequence, is characterized in that successive test sequences can be made with different levels of supply voltage. As described both the circuit under test and the reference circuit are attached to a plug-in patch board 3, Fig. 1, on the top and bottom sides of which row and column conductors Fig. 4 (not shown) have been printed, and the board is attached to the test apparatus by a multiway plug and socket 4. The test apparatus then applies clockpulse 10, Fig. 2, via a gate 11 to a counter 12 which sequentially pulses corresponding pairs of terminals of the circuit under test 13 and the reference circuit 14. Ouput signals from the two units are compared 15 and any disagreement sets a trigger 16 which (a) closes the gate 11 to stop any further advance of the counter 12, and (b) actuates an alarm indicator 17. The state of the counter, and the output(s) at which disagreements occur are then indicated by lamps 7a and 7b, Fig. 1, on the front of the test apparatus, and the significance of the indications is indicated by appropriate legends 6a, 6b, on the end of the board 3. The test sequence may be restarted by closure of a switch 18, Fig. 2, and it may continue either automatically, as shown, or on a single-shot basis by use of switches 20 and 21. The mixed outputs of the cicuit under test and the reference circuit, are also applied via an audio amplifier to a loud-speaker so as to produce a continual noise which will only stop when a fault is located. A variable voltage source 36, and a further four-state counter 34, are arranged so that repeated test sequences may be made using either a low, a normal, or a high supply voltage, and the system also includes a probe 8, Fig. 1, the use of which enables the counters 12, Fig. 2, to be set to any desired state.
Patent GB-1101254-A (GB)
Title: Improvements in or relating to apparatus for testing tubular or hollow articles, particularly thermoplastics pipes, designed to withstand internal pressure
Inventor: LLOYD PETER FREDERICK VICTOR
IPC: G01M3/28
Filed: 1965-08-27
Abstract: 1,101,254. Testing tubular or hollow articles. DURAPIPE & FITTINGS Ltd. Aug. 26, 1966 [Aug. 27, 1965], No.36973/65. Heading G1S. Apparatus for testing tubular or hollow articles 9 designed to withstand internal pressure comprises means for introducing fluid under pressure into an article to be tested, means 18 for indicating the pressure of the fluid within the article, means for indicating when the article fails, and a cut-off valve 24 for automatically cutting-off  the pressurized supply to the article when the article fails, the cut-off valve comprising a valve member 27 located within a chamber 26 adapted to be placed in flow communication with the said pressurized supply and with the interior of the article being tested, the chamber having a seating 29 against which the valve member 27 is adapted to bear to cut-off the supply of pressurized fluid to the article being tested, the loading on the valve member at which the pressurized flow is cut-off being adjusted by the screw-member 32. In the embodiment described, the apparatus is used to test six thermoplastic pipes 9, which are mounted in a water bath 14, pressurized water being pumped into the pipes through a sensitive pressure regulator 17, cut-off valves 29 returning to the water bath via venting valves 20. When the pressure in the specimen reaches a certain value the timing unit 21 is started and stops when the pressure drops. If a specimen fails, the cut-off valve 24 operates to cut-off the pressure and the reading of the timing unit is taken.
Patent GB-302585-A (GB)
Title: Improvements in or relating to charging and discharging condensers fed on direct current voltage for use on cathode ray oscillographs
IPC: H03K4/12
Filed: 1928-12-15
Abstract: 302,585. Institut f³r Physikalische Grundlagen der Medizin. Dec. 17, 1927, [Convention date]. Charging and discharging condensers. - Cathode-ray oscillographs are provided with means for deflecting the rays, comprising a condenser charged from a source of continuous current, its discharge being applied across, and controlled by, a thermionic tube having a control electrode and a trip circuit connected therewith. As shown, Fig. 2, the charging and discharging periods of the condenser C are controlled by a resistance-reflex coupled connection of thermionic valves E, S, or by a valve provided with two grids in which case the condenser is charged from the mains through a resistance instead of through the charging valve V. By varying the filament current of the valve V, the capacity of the condenser, or the value of the resistances W, or the potential applied to the valves E, S, the screen curves can be controlled as desired. By applying an additional regulated alternating E.M.F. to one of the grids of the valves E, S through a transformer T, stationary images of the curves can be obtained. The Specification as open to inspection under Sect. 91 (3) (a) does not restrict the invention to cathode-ray oscillographs.
Patent GB-1398158-A (GB)
Title: Dynamoelectric machines having liquid cooled rotors
IPC: H02K9/00
Filed: 1972-08-09
Abstract: 1398158 Cooling dynamoelectric machine rotors WESTINGHOUSE ELECTRIC CORP 9 Aug 1972 [21 Sept 1971] 37155/72 Heading H2A The disclosure is similar to that in Specification 1,398,517, but the claims are directed to the provision of a dynamoelectric machine including a rotor 20 which has liquid, e.g. water, coolant circulating passages including an axial passage 44 communicating with opposed radial passages 40 extending to the rotor surface for discharging the liquid therefrom, a liquid restrictor in the form of a plug 50 disposed in each radial discharge passage adjacent the rotor surface and having an orifice 51 therethrough, and for venting gases from the region of the rotor axis to the rotor surface a vent tube 52 in one or each radial discharge passage. The tube is supported adjacent the passage wall by a member 53, possibly tapered, secured to the plug.
Patent GB-963485-A (GB)
Title: Improvements in or relating to scintillation counters
Inventor: CHEVALIER GERARD
IPC: G01T1/202
Filed: 1960-10-31
Abstract: A scintillation counter comprises zinc sulphide dispersed in a resin or plastics material such as cellulose acetate and deposited on a solid plastics, such as cellulose acetate, or metallic support, the zinc sulphide particles having a diameter of from 1 to 5 microns and the thickness of the deposit being such that its optical density is from 0.30 to 0.35, corresponding to a thickness of from 0.01 to 0.04 mms. The zinc sulphide can be activated by silver. The zinc sulphide can be dispersed in a varnish comprising a solution of cellulose acetate before application to the support, the ratio of the weight of the dry material of the varnish to the weight of the zinc sulphide being from 5 to 15%. Other materials for the varnish can be silicone greases, synthetic rubber solutions, polymethyl-methacrylate solutions, polystyrene resin base varnishes, polyvinyl resin base varnishes, and heat-modified polyvinyl resin base varnishes. Materials for the support can be cellulose acetate (Registered Trade Mark "Rhodoid"), polymethylmethacrylate (Registered Trade Mark "Plexiglas"), "Plexigum" (Registered Trade Mark), polyvinyl resin, polyesters (Registered Trade Mark "Mylar"), polyethylene, and aluminium.
Patent GB-1428503-A (GB)
Title: Data processing systems
IPC: G06F12/10
Filed: 1973-08-08
Abstract: 1428503 Memory addressing HONEYWELL INFORMATION SYSTEMS Inc 8 Aug 1973 [24 Aug 1972] 37685/73 Heading G4A Apparatus for deriving an address for a main memory having variable size segments comprises an associative memory 16 (Fig. 1) for comparing an input address from register 14 with stored addresses representing segment numbers and applying, when a match occurs, an output signal on one of a plurality of lines 18 to encoder 20 which converts the signal to an address for accessing a buffer memory 24 from which is then read out the address of the required segment in the main memory. When more than one match occurs multiple hit logic 26 operates to erase all the locations of the associative memory. Initially when a new process control block 12 is entered, validity and procedure bit positions in memory 16 are purged and a segment number is fed to segment register 14. Since no match occurs a signal is fed over line 32 to replacement algorithm 34 which results in a counter (50, Fig. 2, not shown) being incremented to supply a signal to selection logic 28. A gate (72, Fig. 3, not shown) in the selection logic is then enabled so that the memory 16 is addressed and bit sense logic 44 tests the read out word for a procedure bit. This does not exist and a write command is then generated so that the number in register 14 is read into the associated memory. Simultaneously a segment descriptor defining the actual address is found, by accessing stored tables, so that by accessing the memory 16 again to generate a match signal, encoder 20 generates an address in memory 24 corresponding to the position at which the segment member has been entered into memory 16 so that the segment descriptor is read into the appropriate location.
Patent GB-877101-A (GB)
Title: Force measuring device
IPC: G01L1/26
Filed: 1959-11-06
Abstract: 877,101. Dynamometers. SCHENCK MASCHINENFABRIK G.m.b.H., CARL. Nov. 6, 1959 [Dec. 27, 1958; March 4, 1959], No. 37783/59. Class 106 (2). A force-measuring device comprises a load cell 6 pivotally disposed in a casing comprising a rigid cover-plate 2 and rigid side walls 1, the side walls 1 being supported on an elastically deflectable base-plate 3, the capsule 6 being pivotally connected to the cover 2 and the baseplate 3. The force to be measured, acting between beams 12, 13, is transmitted to a bedplate 2 and the elastically deflectable base-plate 3 which is in the form of a leaf spring. The capsule 6 is pivotally connected at 8, 10 to these plates. In other embodiments, the leaf spring 3 is supported only at its centre, or the force may be transmitted thereto only by a ball, or a pin constrained to move along the axis of the capsule 6 and not transversely to it.
Patent GB-361157-A (GB)
Title: Speed-governor
IPC: H04M1/315
Filed: 1930-12-17
Abstract: 361,157. Brakes. PATH• CINEMA, ANCIENS ETABLISSEMENTS PATH• .FRERES, 30, Boulevard des Italiens, Paris. Dec. 17, 1930, No. 38034. Convention date, Jan. 11. [Class 103 (i).] A centrifugal governor comprises a weight 5 pivoted at 4 to a disc 3 and provided with a brake shoe 7a attached to a blade 7 and contacting with a stationary friction surface 8. A blade spring 10 is also attached to the weight 5 and contacts with an eccentric adjustable stop 6. A balance weight 9 is attached to the disc 3.