baber/WOPTO huggingface dataset:
Patent GB-624541-A (GB)
Title: Improvements in means for closing the winding-slots of dynamo-electric machines
IPC: H02K3/493
Filed: 1947-05-31
Abstract: 624,541. Slot wedges for dynamo-electric machines. FROST & CO., Ltd., H., and PERRIGO, A. E. B. May 31, 1947, Nos. 14479 and 23793. [Class 35] The transverse reluctance of a magnetic slotwedge is increased by having at least one closed aperture along its central portion. There may be a plurality of round apertures as shown in Fig. 3 or the apertures may be extended in the longitudinal direction of the slot wedge. If desired, two staggered rows of oblong slots may be used or the oblong slots may be placed obliquely across the wedge as in Fig. 8. The wedge may be curved or flat in section and may have a single slot running along most of its length. The wedge may engage grooves in the teeth as shown in Figs. 3 and 8, or may have side flanges 19 fitting against the slot walls as in Fig. 13. The wedges may be tapered slightly. According to the second Provisional Specification a single aperture extending along the slot may be open at one end so that a shaped piece of wire can be used. Specification 611,867 is referred to in the first Provisional Specification.
Patent GB-780220-A (GB)
Title: Improvements in or relating to apparatus for developing light-sensitive material
IPC: G03D7/00
Filed: 1955-05-19
Abstract: 780,220. Photographic developing appatus. OZALID CO., Ltd., and CROSS, E. L. May 19, 1955, No. 14508/55. Class 98(2) In an apparatus for the vapour development of photographic prints comprising a development chamber 1 having a perforated wall 5 over which an endless band 6 passes, a separate vaporization chamber 2 is provided in direct communication with chamber 1 and containing liquid developer (ammonia), which is fed from a storage tank 8 and vaporized by a heater 12. The development and vaporization chambers may comprise a single unit, as shown, separated by a partition 3 with openings 4 therein, or they may comprise two separate units connected directly by a pipe. The development chamber is fitted with a heater 14 and means may be provided near the openings 4 to prevent any condensate entering chamber 1. Specifications 650,464 and 679,771 are referred to.
Patent GB-1418843-A (GB)
Title: Shuttles
IPC: D03J5/00
Filed: 1973-03-27
Abstract: 1418843 Shuttles BANCROFT SHUTTLES & BOBBINS LTD 27 March 1973 [28 March 1972 (2)] 14527/73 Heading DIE The pim carrier in a shuttle comprises a resilient insert 24 at the end of the pim cavity which has a recess with part cylindrical side walls 28 to engage the pim head 30. The shuttle may be a split shuttle, and the pim head may be stepped (60) Fig. 5 (not shown), the side walls 26 of the insert 26 having complementary vertically extending recesses (56). The insert may be of natural or synthetic rubber, and forms a resilient connection between the side walls.
Patent GB-1338487-A (GB)
Title: Transistor amplifier
IPC: H03F3/42
Filed: 1971-05-12
Abstract: 1338487 Transistor amplifying circuits MEDICOR MUVEK 12 May 1971 [12 May 1970] 14592/71 Heading H3T In a cascode amplifier the base of the transistor 6 in common base connection is biased from a tap on a potentiometer, as shown comprising resistors 8, 9 connected between the supply terminal 3 and the collector of the transistor 5 in common emitter connection. The arrangement is intended to produce an output voltage at terminal 4 which is twice the allowable collector to emitter voltage of a single transistor, and the collector voltage of the transistor 5 is limited to half the supply voltage by means of a diode 11 and potentiometer comprising equal resistors 12, 13. Two such cascode amplifiers may be provided with a common emitter impedance, e.g. a resistor or constant current generator, to form a longtailed pair (Fig. 2, not shown).
Patent GB-803735-A (GB)
Title: Improvements in or relating to resistance welding
Inventor: HARDESTY ETHRIDGE EUGENE
IPC: B23K11/00
Filed: 1956-05-10
Abstract: 803,735. Making composite sheets; welding by pressure. FAIRCHILD ENGINE & AIRPLANE CORPORATION. May 10, 1956, No. 14601/56. Classes 83 (2) and 83 (4). In resistance welding the edges of a honeycomb core formed from thin metal strips to the faces of a pair of thicker metal sheets to form a sandwich, an irregular surface is provided on one face of each sheet, the edges of the core are abutted against the irregular surfaces so that contact occurs at closely-spaced regular intervals and a welding current is passed through the sheets and core in series. Two stainless steel sheets 14, 15 having small ridges provided on their surfaces 16 by criss-cross scoring, knurling, coining, &c., are assembled with a honeycomb core formed by welding stainless steel foil strips 11 at their contact points 12, each strip preferably having a thin layer thereon of silver, copper, gold, aluminium, &c. as described in Specification 792,165 and electrodes 17, 18 are rolled over the sheets to effect welding.
Patent GB-564545-A (GB)
Title: Improvements relating to electromagnetic relays
IPC: H01H50/34
Filed: 1942-10-19
Abstract: 564,545. Electromagnetic relays. TOMLINSON, A. V. (Union Switch & Signal Co.). Oct. 19, 1942, No. 14613. [Class 38 (v)] In a relay particularly suitable for use as a track relay in railway signal systems, wherein release of the relay is effected by short-circuiting the winding 6, a quick release'is obtained by pivoting at 15 on the pivoted armature 13 a vessel 14 containing a heavy movable mass such as mercury, the arrangement being such that when the armature is attracted into the position shown, the vessel 14 is tilted and the mercury by flowing to the left lengthens the distance of the C. of G. of. the armature from its pivot 8. The tilting is effected by means of fixed stops 17, 18 and a forked member 16 on the armature. The relay may also be provided with an auxiliary armature 12 which co-operates with a magnet 10 energized by a short-circuited' winding 11 to delay the " pick-up " speed of the relay.
Patent GB-168393-A (GB)
Title: Improvements in plate or bar handling skids for rolling mills
IPC: B21B39/00
Filed: 1920-05-29
Abstract: 168,393. Colville & Sons, Ltd., D., and Inglis, J. J. May 29, 1920. Rolling; roller tables. -A skid table for conveying plates or bars from conveying rollers on one side of the cooling-bed of a rolling-mill to rollers on the other side which feed the plates &c. to shearing or like plant, the plates &c. being temporarily supported on fixed bars extending across the bed so that the plates &c. are open below to allow access of air for cooling, is provided with plungers, which by their own or applied weight or spring are normally below the level of the table, but which are operated by solenoids to raise them above the surface of the table into the path of the plate &c. In the case of tables on which the work is normally held by an electromagnet, these plungers are utilized when the work is too hot to be magnetic, the table magnets in this case not being energized. The work rests on a table M of magnetic material which is energized by coils N and is separated from the skids K by brackets L of non-magnetic material to prevent undue friction between the skids and rails; or the skids may be magnetically insulated or constructed of non-magnetic material. A pair of plungers H carrying dog-pieces J guided in apertures in the rear end of the table are connected by a yoke to the plunger F of a solenoid A which is supported in a non-magnetic or magnetically insulated cage B connected by a bolt E between lugs D on the table. The table is traversed backwards and forwards by a rope or chain connected to lugs on the front of the table and rear end of the cage. According to the Provisional Specification, the plungers may be mounted at one or both ends of the table.
Patent GB-116211-A (GB)
Title: Improvements in or relating to Automatic Regulators for Boiler-feed Apparatus.
Inventor: ANTHONY ALFRED HYMAN
IPC: F22D5/10
Filed: 1917-10-10
Abstract: 116,211. Anthony, A. H. Oct. 10, 1917. Feed-water, controlling.-Relates to automatic feed-regulators of the kind in which the feed check-valve is controlled by the leakage of feedwater past a piston on the stem of the valve, the escape of the leakage water from behind the piston being controlled by a float, as described in Specifications 16097/02 and 108,513. Water leaks behind the piston A through a passage C in the walls of the cylinder, the passage being free from any obstruction such as a valve stem or the like forming an annular space in the passage, and the opening C' in the cylinder wall above the piston being accessible through a cleaning opening D. A pricker F, the pointed end of which may be pressed into the leakage orifice E may be fitted in the screwed plug in the cleaning opening. The leakage orifice E is formed in a removable plug screw D<3> screwed into the cleaning plug or into the opening C<1>.
Patent GB-519156-A (GB)
Title: A cleaning, descaling and coating compound for ferrous metals for use during hardening or tempering processes
IPC: C21D1/70
Filed: 1939-06-07
Abstract: 519,156. Cleansing & descaling compositions. PALMER, A. S. June 7, 1939, No. 14690. [Class 91] Ferrous metals or alloys are descaled and cleaned by covering with a mixture of soda ash, soft soap, red ochre, and paraffin oil and raising to a high temperature. The hot metal may be quenched in oil or water whereby the cleaned surface is made of a bright silver colour and rust-proof.
Patent GB-554126-A (GB)
Title: Improvements in and relating to the production of sodium fluoride
IPC: C01D3/02
Filed: 1941-11-18
Abstract: 554,126. Sodium fluoride; potassium carbonate. SIEGEL, W. Nov. 18, 1941, No. 14818. [Classes 1 (ii), and 1 (iii)] In a process for obtaining sodium fluoride by reacting potassium silicofluoride with potassium carbonate in solution and reacting the potassium fluoride solution produced with sodium carbonate, the reaction of the potassium fluoride and sodium carbonate is carried out in the presence of excess potassium fluoride thereby avoiding contamination by silicon compounds present in the product of the first reaction. The solution obtained by the reaction of the potassium silicofluoride and potassium carbonate is preferably concentrated and cooled before the addition of the aqueous sodium carbonate. From the mother liquor potassium carbonate may be obtained by crystallization. Specification 263,623, [Class 1 (ii)], is referred to.
Patent GB-256363-A (GB)
Title: A device for determining the operation of wireless receiving apparatus at a distance from the apparatus
IPC: H01H51/08
Filed: 1925-06-08
Abstract: 256,363. Hawker, J. R. S., and Hayes, A. H. June 8, 1925. Electromagnetic switches; tappet actuation; latching and unlatching.-In a switch in which successive momentary energizations of an electromagnet move the parts alternately on and off, contact-members are provided which by their resiliency tend to move to the open position but which are adapted to be latched in the closed position. According to the construction shown in Fig. 1 a vertically moving reciprocating armature 12 carries a member having two hooks 25, 26 adapted to engage alternately the ends 24, 24a of a member 23 having arms 15, 16. With the parts in the position shown, energization of the electromagnet 2 causes the hook 26 to pull down the end 24a thus rotating the member 23 and causing the arms 15, 16 to press resilient contacts 11, 17 against fixed contacts 9, 22. Upon the next energization of the electromagnet the hook 25 will engage the end 24 and restore the parts to their original position. According to a modification, Fig. 3, two resilient contact strips i, m tend to separate but are so shaped as to be latched in mutual engagement when placed in the position shown. Energization of the electromagnet b rotates an armature e carrying a spring h which pushes the strip i to the left and allows the strips to separate. The parts are restored at the next energization of the spring h engaging the hooked end of the strip m. The invention is specially adapted for use with a wireless receiving set.
Patent GB-1331657-A (GB)
Title: Printing apparatus
IPC: B41J2/495
Filed: 1971-05-13
Abstract: 1331657 Selective printing J T POTTER 13 May 1971 [21 May 1970] 14850/71 Heading B6F  A selective printer comprises a rotating helical bar 13 and print hammers, each hammer including a blade 17 coupled to a coil 33 located in a magnetic field between polepieces 37, 35. The hammers are driven by passing an electrical pulse through the coil, and are biased to the rest position by magnetic attraction, the blade 17 being of material of high permeability. The magnetic field is generated by a permanent magnet 45 connected to soft iron members 43, 47 and polepieces 35, 37. The blades are mounted on pivotable rigid lightweight frames 23. Printing is effected on paper 19 through an ink ribbon or by inking the helical bar 13. The paper may be fed continuously, the hammers being skewed to compensate for movement of the paper. Hammer rebound is prevented by resilient stops 48.
Patent GB-723964-A (GB)
Title: Improvements in and relating to electromechanical transducing devices, such as gramophone pickups and the like
IPC: H04R17/06
Filed: 1951-06-15
Abstract: 723,964. Gramophone pick-ups. COSMOCORD, Ltd., and KELLY, S. June 15, 1951 [June 15, 1950], No. 14965/50. Class 40 (4). [Also in Group XXXVIII] A piezo-electric pick-up comprises two styli, one for standard and the other for micro-groove recordings, which are each operatively coupled to a common crystal with a different mechanical advantage appropriate to the respective reproduction characteristics. As shown in Fig. 1, a torsional-type crystal 10 supported by pads 11 has its free corner coupled by a clip 12b to an arm 12a which is pivoted at 12c and carries permanent jewel or tungsten carbide styli 15, 16 on cantilever arms 13, 14 attached to its ends. Each cantilever has low transverse and high vertical compliances and acts on the crystal through the pivoted arm and clip with different mechanical advantage. In an alternative arrangement, Fig. 2, a bender-type crystal 10a has its free end coupled to the arm by a clip coincident with the axis of the pivot, this axis being offset from the centre of the arm. A modified arrangement of Fig. 2, Fig. 3 (not shown), has the arm and clip positioned as in Fig. 1. In a cartridge assembly, Fig. 4, utilizing the arrangement shown in Fig. 2, a torsional-type crystal 21 is mounted by a rubber clamp 22 in a two-part casing 20 provided with terminal lugs 26. The free crystal end is gripped by a yoke 23 having a pivot 24 mounted in a rubber bush 25 and carrying arms 31, 32 which are bored to receive the cantilevers 27, 28. A screw 33 clamps the cantilevers which are also soldered in position. The cartridge assembly is mounted by metal brackets 35, 36 and screws 38, 39, Fig. 5, in a cradle 37 which is pivoted between the ends of a U-shaped stirrup 40. A moulded finger lever 41 enables the cradle to be rotated so that either stylus may be brought to an operative position, a detent mechanism controlled by a spring 42 being provided by a lug 37b on the cradle and co-operating lugs 40a-40d on the stirrup.
Patent GB-434894-A (GB)
Title: Improvements in or relating to posts or standards for wire fencing
IPC: E04H17/06
Filed: 1934-05-18
Abstract: 434,894. Wire fencing; standards. DONE, J. S., Houndshill House, Banbury Road, Stratford-on-Avon. May 18, 1934, Nos. 15059 and 29252. [Class 45] A standard for wire fencing comprises a pair of uprights a, b or a<1>, b<1>, in line with the fence and connected together by a bar c, the fencing wires h passing through holes in the uprights and being secured to the rear uprights b or b<1>. As shown, the post a of the end standard of a fence is strengthened by a stay wire g attached to an anchor d, e engaging a notch in the post b, and the posts a<1>, b<1> of the intermediate standards are provided with crossed stay-wires g<1> above ground level.
Patent GB-1006421-A (GB)
Title: A multi-channel control system
IPC: B23Q15/00
Filed: 1962-04-18
Abstract: 1,006,421. Electric selective signalling. LICENTIA PATENT - VERWALTUNGS. April 18, 1962 [April 18, 1961], No. 15083/62. Heading G4H. [Also in Division H3] The invention provides a system comprising at least two channels for the control of an operation, and is arranged so that faults developing in the system do not cause improper operation. In a two channel system the operation initiated only when both channels are energized. Each channel has an AND or a NOR gate at its input, each gate receiving an initiating signal. The output of each channel is fed as a second input to the gate in the other channel, and it is arranged that the first channel can be energized only if the second channel is unenergized when the initiating signal is applied, and the second channel only after the first channel is energized. Each channel may have more than one section with this feedback arrangement. In Fig. 1a each channel comprises an AND gate and a bi-stable trigger. When input signals S1 S2 are both 1, both channels give an output 1 unless a fault has developed. The output signals feed amplifiers n and o which are in series and together operate valve MV. Trigger f is in state 1 when at rest, whereas trigger e is in state 0. If S1 and S2 = 1 AND gate b gives an output, trigger e changes its state and a signal 1 is fed to amplifier n and to the input of AND gate b<SP>1</SP>. Trigger f therefore changes its state and a signal 1 is passed to amplifier o. Valve MV is thereby operated, and since signal 0 is now fed back to gate b no further signal S1 can cause operation. The triggers are reset by means not shown. Preferably the channels are the inverse of each other, i.e. where one contains AND gates the other contains OR gates. Fig. 2 illustrates such a system, the input signals being 1 and 0, or S1 and S1. This arrangement uses two further inputs S2 and S2, the channel outputs being 1 and 0. The system is extended to use in control of a press, for example, as described with reference to Fig. 4 (not shown).
Patent GB-144310-A (GB)
Title: Manufacture of new azodyestuffs
IPC: C09B33/10
Filed: 1920-06-03
Abstract: Azo dyes are prepared by coupling one or two molecules of diazo compounds containing a sulphonic or carboxylic acid group in o-position, or one molecule of such diazo compound and one molecule of any diazo compound, with one molecule of 5 : 51-dioxy-2 : 21-dinaphthylamine-7 : 71-disulphonic acid.  According to examples, there are obtained:-a monoazo dye from 4-chlor -2-aminobenzoic acid and the second component; a primary disazo dye from two molecules of anthranilic acid and the second component; a primary disazo dye from 4 : 5-dichloraniline-2-sulphonic acid, 4-chlor-2-aminobenzoic acid, and the second component; a primary disazo dye from anthranilic acid, 4-chlor-2-aminophenol, and the second component; a trisazo dye by diazotizing the monoazo dye from anthranilic acid and 3-amino-4-cresol methyl ether and coupling with the monoazo dye from anthranilic acid and the second component; a primary disazo dye from 1-naphthylamine-2-sulphonic acid, 4-chlor-2-aminobenzoic acid, and the second component; a primary disazo dye from two molecules of 4-dimethylamino-1-aminobenzene-2-sulphonic acid and the second component.  The products dye cotton red to blue shades fast to ironing, and the dyeings may be after-treated with copper sulphate. Specifications 22804/99, 24296/99, 21473/10, 27627/10, 9433/11, and 18073/12 are referred to.ALSO:Azo dyes are prepared by coupling one or two molecules of diazo compounds containing a sulphonic or carboxylic acid group in o - position or one molecule of such diazo compound and one molecule of any diazo compound, with one molecule of 5 : 51-dioxy-2 : 21-dinaphthylamine-71 : 71-disulphonic acid. Examples are given of the preparation of monoazo, disazo, and trisazo dyes.  The products dye cotton red to blue shades fast to ironing and the dyeings may be after-treated with copper sulphate. Specifications 22804/99, 24296/99, [Class 2, Acids and salts, Organic &c.], 21473/10, 27627/10, [Class 2 (iii), Dyes &c.], 9433/11, and 18073/12 are referred to.
Patent GB-947365-A (GB)
Title: Process for preparing unsaturated nitriles
IPC: B01J23/34
Filed: 1962-04-18
Abstract: Unsaturated nitriles e.g. acrylonitrile and methacrylonitrile, are prepared by reacting olefines with oxygen and ammonia in the presence of a catalyst comprising the oxides of molybdenum and phosphorus and one or more oxides of the elements chromium, manganese, iron and nickel, at a temperature between 300 and 465 DEG C. and a pressure within the range 0.3 to 10 atmospheres (absolute). The catalyst may be represented as the composition MeaMobPc in which a is 1 to 20, b 1 to 10, and c 1 to 3, and Me stands for one or more of metals chromium, manganese, iron and nickel, and may be used deposited on a carrier such as silicic acid, pulverised pumice, smelter-slag, kieselguhr, alumina or mixtures thereof, and the oxygen may be in a gas such as air, with optionally an inert diluent such as steam, carbon dioxide, nitrogen, or a saturated hydrocarbon.  A flow bed or fluidised bed reactor may be used and two forms of apparatus are described (Division B1).  Specification 947,364 is referred to.
Patent GB-1356738-A (GB)
Title: Article of footwear
IPC: A43B13/28
Filed: 1972-04-04
Abstract: 1356738 Boots &c R W VOGEL 4 April 1972 15278/72 Heading A3B An article of footwear has an upper including at least two sheet like parts 2 of air permeable material, the parts 2 being joined by plastics material which is integrally moulded with a moulded sole 3. As described the parts 2 (which have an outline shown by the dotted line 4) are placed in a mould (not shown) and plastics material is injected into the mould to form the sole 3, toe cap 10, quarters 6 and strips 5, 14, the plastics material over lapping both surfaces of the edge regions of the parts 2. The edges of the parts 2 may be perforated to provide a key for the plastics material. The toe cap 10 may also be perforated to improve the ventilation of the shoe.
Patent GB-529138-A (GB)
Title: Improvements in and relating to high pressure fluid medium distribution systems
IPC: A62C99/00
Filed: 1939-05-23
Abstract: 529,138. Fire-extinguishing by gases. KIDDE & CO., Inc., W. May 23, 1939, No. 15283. Convention date, June 14, 1938. [Class 47 (ii)] [Also in Group XXXIII] In high-pressure fluid distribution systems, particularly for supplying carbon dioxide for fire-extinguishing or for inflating floats on aircraft, a rupturable or other fluid-releasing mechanism 2, which allows the gas to escape from a container 1 into a discharge pipe 6, is actuated, preferably by a cable 4, from a handle 5, which is also adapted to rotate a valve 9 distributing the gas to one or other of conduits 7, 8 leading to the fire-extinguishing or the flotation apparatus respectively, the arrangement being such that the handle 5 cannot be pulled out to, operate the cable 4 until the valve 9 has been rotated to the position for supplying gas to the floats through the connection 22 and the pipe 8. Supply of gas to the fire-extinguishing apparatus is effected by actuating' the cable 4 directly by a second handle 33, the valve 9 remaining in the position shown in Fig. 3, so that the gas passes from the pipe 6, by passages 20, 25, 21, to the pipe 7. Leakage of gas to the pipe 7 or 8 which is not connected to the pipe 6 is prevented by atmospheric vents 26, 27, one or other of which gives communication from the unconnected pipe to a central bore 18 through which the cable 4 passes.