baber/WOPTO huggingface dataset:
Patent GB-642521-A (GB)
Title: Improvements in and relating to coiled filaments for electric lamps and discharge devices and methods of making the same
IPC: H01J9/04
Filed: 1944-10-30
Abstract: 642,521. Electric incandescent lamp filaments. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 30, 1944, No. 21166. Convention date, Oct. 30, 1943. [Class 39(ii)] [Also in Group XL(a)] A coiled filament for an electric lamp comprises a main coil of thick wire and a second coil of finer wire, connected in shunt with the main coil and having convolutions. of a diameter which is essentially the same as that of the convolutions of the main coil, positioned substantially coaxially with the convolutions of the main coil so as to cross them and intervene between them. The filament is made by winding- on a mandrel M, Fig. 2, a wire 11 of elastic material to form the main coil, winding under tension a finer wire 13 (Fig. 7, not shown) to form the second coil having convolutions which cross at 15 the convolutions of the main coil and which contact the mandrel between the said convolutions, heat-treating the wires, cutting the assembly to the individual filament lengths, and chemically disintegrating the mandrel. Two finer wires can be wound side by side over and between the coils of the main wire. One or more additional windings may be wound over the main coil and the second coil. The two coils can be wound in opposite helical senses with the same or different pitches or in the same helical sense with different pitches.
Patent GB-1427320-A (GB)
Title: Electrical switches
IPC: H01H13/02
Filed: 1972-05-06
Abstract: 1427320 Mechanical switches; indication LUCAS ELECTRICAL CO Ltd 24 April 1973 [6 May 1972] 21233/72 Heading H1N The two-part slidable operating member 2a, 2b of a conventional push-button switch has an externally viewable wall 7 comprising an acrylic lens 8, a coloured and lettered polyester film 9, and three white lenses 10 behind which are internal compartments 4, 5, 6 formed by dividing walls 3 and angled surfaces 16, there being apertures 12, 13, 14 in a side wall 11 of part 2b with corresponding apertures 20 in part 2a. The apertures are staggered and arranged so that when the operating member is mounted within a housing 1 having a snap-fit cover la light from an external source can enter through a window 15 in the wall of the housing adjacent side wall 11 and be reflected along a light path formed by one or some of the compartments to illuminate portions of the end wall 7 according to the position of the operating member and the function of the switch.
Patent GB-1063989-A (GB)
Title: Structural beam
IPC: E04C3/07
Filed: 1965-05-19
Abstract: 1,063,989. Metal beams. INTERNATIONAL NICKEL Ltd. May 19, 1965 [May 27, 1964], No. 21237/65. Heading E1K. A beam comprises two opposed channels 1 each having a flat base 2 and flanges 3, joined by concave webs 4 which may be of stainless steel. The webs may be connected by members 5. The channels may be covered by stainless steel 7.
Patent GB-441495-A (GB)
Title: Improvements in telephone systems
IPC: H04M1/60
Filed: 1934-07-20
Abstract: 441,495. Exchange systems. SHIPTON, E., 12, Dartmouth Street, Westminster. July 20, 1934, No. 21294. [Class 40 (iv)] Direct lines are run between a master or privileged station on an exchange and one or more other stations, keys being provided to connect the telephone instruments to the exchange line or the direct-call line as required. The master station may comprise a loudspeaking receiver and amplifier. In the system shown, the master-station's handset 3 or loudspeaker set, Fig. 2, depending on the position of the switch-hook 2, is connected to an automatic exchange by operating a key A1, 2. To call a particular substation (shown on the right of Fig. 1) over a direct line, key B1 .. 3 is operated completing a circuit from battery 10 over leads 23, 13 for a calling lamp 14 and buzzer 15. This circuit will be completed even if the called party is busy with an exchange connection. In reply, key C1 .. 4 at the substation is operated to open the calling circuit and to disconnect the substation's instruments 20, 21 from its exchange line and connect them to leads 19, 23. A direct call from the substation to the master station is made by closing key C1 . . 4 to operate lamp 25 and buzzer 26. A key D1 .. 3 also provides for direct calls from the master station to an operator's board. In the loud-speaker set, the loudspeaker is operated through a push-pull amplifier 42, and the microphone 49 and an amplifier 52 are associated with the circuit through an anti-side-tone coupling of bridge type. The feed circuit to the filaments of the amplifiers and the microphone 49 is closed at contacts 48 by a relay 58 operated when a call comes in- The microphone of the handset 3 may be used also for the microphone 49, the cradle switch being then arranged to disconnect the receiver only. Specification 434,134 is referred to.
Patent GB-658375-A (GB)
Title: An improved signalling apparatus for a maximum demand meter
IPC: G01R11/60
Filed: 1949-08-17
Abstract: 658,375. Maximum demand indicators. LANDIS & GYR SOC. ANON. Aug. 17, 1949, No. 21438. Convention date, Aug. 19, 1948. [Class 37] [Also in Group XIX] Relates to maximum demand metering apparatus comprising a signalling or circuit closing switch device which is operated if during a registration period the maximum demand attains a pre-set or predetermined value. With excitation of relay 9, 10 at the commencement of maximum demand registration period bellcrank 5, 7 is released and arm 41 extending therefrom is separated from an extension 42 of switch tongue 39 which drops to permit projection 40 to engage nose 35 of cam disc 33 ; the switch contacts however are so arranged that there is still some pressure between them and they remain closed as shown. With release of bell-crank 5, 7 the toothed wheels 14, 15 enmesh and the movement of the meter disc 1 is transmitted to drive the spring-controlled maximum demand pointer 19 and via differential gears 23-28 the maximum pre-setting device 31. The latter indicates the pre-set value to be signalled and this is equated to the distance between planet shaft arm 32 and co-operating pin 34 on the cam disc 33. If during the registration period the pointer 19 attains the pre-set maximum the arm 32 meets the pin 34 and rotates the cam disc 33 so that the projection 40 is disengaged from the nose 35 to produce reversal of switch 38 (i.e., tongue 39 makes on lower switch contact) and transmission of signal by means, not shown, indicating that the pre-set maximum has been reached. At the end of the fixed registration period, or earlier than this if the pre-set maximum is attained, relay 9, 10 is de-energized, the wheels 14, 15 separate, the spring tongue 39 is lifted by the arm 41 and the projection 40 is raised from engagement with the edge of the cam disc beneath the nose 35 so that the maximum demand pointer 19 returns to zero, the arm 32 and device 31 return to the pre-set maximum position and the cam disc 33 pulled by spring 36 reverts to original position. The essence of the invention is that the meter is only loaded by movement of the cam disc 33 during the short period required to effect reversal of the switch contacts; cam disc 33 only moves through a few degrees.
Patent GB-1150254-A (GB)
Title: The Preparation of 7-Chloro-4-Thia-Oenanthic Acid.
IPC: C07C/
Filed: 1967-05-09
Abstract: 1,150,254. 7 - Chloro - 4 - thia - oenanthic acid and derivatives thereof. STAMICARBON N.V. 9 May, 1967 [11 May, 1966], No. 21438/67. Heading C2C. 7-Chloro-4-thia-oenanthic acid is prepared by reacting #-mercaptopropionic acid, or the nitrile, ester or salt thereof, in the presence of a solvent and an azo compound or a hydrazine at 15 to 150 C. with allyl chloride and recovering the above acid, if necessary, after conversion of the nitrite, ester or salt thereof, from the resulting reaction mixture. In an example, the above acid is converted to the corresponding acid chloride, which may then be hydrolysed back to the free acid.
Patent GB-310457-A (GB)
Title: Improvements in pipe joints with rubber or like sealing rings
IPC: F16L13/11
Filed: 1928-07-25
Abstract: 310,457. Hume Pipe Co. (South Africa), Ltd. April 26, 1928, [Convention date]. Sleeve joints with packing compressed radially on assembly; spigot-and-socket and like overlap joints held by cement and the like.-In a joint between a pipe 2 and an external collar 3, or a socket on an adjacent pipe, wherein fluid-tightness is secured by a rubber &c. packing ring 4 which is squeezed between the two parts, the pipe is provided with an annular rib 5 which approaches closely the bore of the collar to retain the ring 4 against the internal fluid pressure. The joint may be additionally sealed by bitumen 11 introduced into the mouths of the collar. In order to cause a gradual squeezing of the packing ring as it is rolled into position, the exterior surface 7 of the end of the pipe is tapered, or the mouth 9 of the collar is flared.
Patent GB-121953-A (GB)
Title: An Improved Sparking Plug for Explosion Engines.
Inventor: RUILLET EUGENE
IPC: H01T13/46
Filed: 1918-12-24
Abstract: 121,953. Ruillet, E., and Hureau, R. Dec. 26, 1917, [Convention date]. Sparking-plugs.-The insulation is made conical and is ground so as to fit tightly within a correspondingly shaped bore in the casing without the addition of any tightening device. The inner end of the insulation is tapered and the terminal is of triangular form with truncated apexes.
Patent GB-498058-A (GB)
Title: Improvements relating to methods of attaching sheet metal or other parts to structural members
IPC: F16B19/06
Filed: 1937-08-06
Abstract: 498,058. Riveting. ROE & CO., Ltd., A. V., and TAYLOR, R. F. Aug. 6, 1937, No. 21691. [Class 83 (iv)] A sheet-metal part b is secured to a structural member a by means of a rivet or pin of deformable metal passing through a hole c in the part b and into but not through a screwthreaded hole in the member a. Blows or pressure on the head of the rivet forces the metal thereof to expand into the thread which is preferably an acme-type thread.
Patent GB-216945-A (GB)
Abstract: 216,945. Cornelissen, L. D. J., (Representative of Douglas, J.). March 7, 1923. Cooking-stoves.-An oven b is attached to the wall of a boiler-stove a of the type described in Specification 214,693, and is heated' by the combustion products from the stove. In the arrangement shown, the oven is bolted to brackets b<2> on the side, of the stove, the top b<1> of the top flue of the oven being level with the hot-plate a<1>. The gases pass through a flue d from the combustion space to flues around the oven. A vertically-movable grate, as described in the prior Specification, is employed.
Patent GB-423743-A (GB)
Title: Improvements in preservative and vermin-destroying compositions
IPC: B27K3/52
Filed: 1933-08-03
Abstract: A vermin-destroying composition is made by heating wood with empyreumatic oil, acetic acid, carbon dioxide and borax in a closed chamber in an oxygen-free atmosphere.  After cooling in a dry atmosphere the product is crushed, insufficiently carbonized particles are removed and the remainder ground to a fine powder. The material may be used in the solid form or in suspension in water. For the removal of ants and similar ground pests the composition may be mixed with the soil.  The application to trees affected by Dutch elm disease, and to prepared timber, growing, hollow or decayed trees is described, particularly for arresting fungus, mildew and dry rot. Specification 224,043, [Class 140], is referred to.
Patent GB-1304627-A (GB)
IPC: C08L101/00
Filed: 1970-05-06
Abstract: 1304627 Flame retardant phosphorus esters; chlorohydroxy compounds MOBIL OIL CORP 6 May 1970 [19 May 1969 18 Sept 1969] 21787/70 Addition to 1303287 Headings C2C and C2P [Also in Division C3] The invention comprises compounds of the Formula I or II where X is chlorine or bromine, or combinations thereof, R is hydrogen, -CH 3  or -CH 2 X, provided that when one R is -CH 3  or -CH 2 X, the adjacent R is hydrogen, R<SP>1</SP> is X, alkyl, haloalkyl, alkoxy, aryl, haloaryl, or arylalkyl, halo being X, R<SP>11</SP> is H or -CH 3 , Q is alkyl, alkoxy, haloaryloxyalkyl or haloarylpoly(oxyalkyl) where halo is X, a is 0, 1 or 2, n is 1, 2 or 3, v is 0 or 1, w is 1, 2 or 3, x is 0 or 1, y is 0, 1 or 2, z is 1 or 2 and x+y+z is 3. The compounds of Formulµ I and II which may be used as flame retardants for polymeric materials may be prepared by reacting an appropriate hydroxyl compound or mixture of hydroxyl compounds with a phosphorus compound, such as a phosphorus trihalide or oxyhalide. Any unreacted halogen atoms attached to phosphorus may be reacted with an alkylene oxide or further hydroxy compound. The phosphites may be converted to phosphates by oxidation or to phosphonates by heating in the presence of a catalyst. The intermediate bis(2-bromoethyl)phosphorochloridate may be prepared by reacting a mixture of tetrabromo (Bisphenol-A) and 2-bromoethanol with phosphorus oxychloride, and may be converted to a compound of Formula II by reaction with the tetrabromo(Bisphenol-A) under alkaline conditions. The mixture of hydroxy compounds used as starting material may be prepared by reacting Bisphenol-A, ethylene oxide and bromine. The corresponding chlorine-containing product and intermediates may be prepared by using chlorine instead of bromine. The intermediate 2,4-dichlorophenoxyethyl phosphorodichloridite may be prepared by reacting 2,4-dichlorophenoxyethanol with phosphorus trichloride, and may be converted to a compound of Formula I by reaction with propylene oxide. A mixture of 2-(2,4-dichlorophenoxy)ethanol and 2-chloroethanol may be prepared by reacting a mixture of 2,4-dichlorophenol and 2-chloroethanol with ethylene oxide, and may subsequently be reacted with phosphorus trichloride to give a compound of Formula I. The mixture of hydroxyl compounds used as starting material may be prepared by reacting phenol. ethylene oxide and chlorine.
Patent GB-217980-A (GB)
Abstract: 217,980. Collins, J. N., and Collins, W. P. March 24, 1923. Turning articles inside out.-The article such as a sock or stocking is held in juxtaposition to the inlet of a downwardly extending tube in which an air current is induced, the air current effecting a reversal of the article without the necessity of a drawing-on or drawing-down operation. As shown. tubes 4 having glass extensions 4a lead to a conduit 5 of progressively increasing diameter, the end 5<a> of the conduit passing into an airtight chamber 6 connected by a conduit 7 to a suction fan 8. In operation, a stocking 17 is held at the bottom of the glass extension 4<a> of a tube, the induced air causing it to be turned inside out under observation of the operative. Upon release of the stocking, it is drawn through the pipe 4 and conduit 5 to the chamber 6 and falls into one or other of compartments 6a, 6b as determined by the position of a hinged flap 13. The compartments 6a, 6<b> are provided with discharge doors so that the goods may be delivered to a truck 10. A perforated grid 18 prevents the goods from being accidentally drawn into the conduit 7. The chamber 6 is provided with inspection windows 11. One of the Provisional Specifications describes an arrangement in which the goods are turned inside out by being sucked into tubes each provided with a damper and a grid to prevent the article from being completely drawn into the tube, and in which the operative retains hold of the article while it is being turned inside out and withdraws it from the tube against the upward movement of the air.
Patent GB-201418-A (GB)
Title: Improvements in devices for testing the ignition in internal combustion engines
IPC: F02P17/12
Filed: 1922-08-11
Abstract: 201,418. Monk, R. T. Aug. 11, 1922. Testing and indicating.- A short-circuiting device for testing the ignition in internal-combustion engines comprises an insulating tube a inside which a pair of electrically connected spring fingers b are adapted to slide with limited movement. The spring fingers are made by bending a length of clockspring steel upon itself to form a bight restricted at d, the free ends of the fingers being curled as shown at c. A transverse pin e at one end of the tube, and flush with the outer surface thereof, is covered by an insulating sleeve f, the pin e engaging the bight when the fingers are in their fully protruded position. The lower end of the tube is notched to facilitate withdrawal of the fingers by their curled ends. The fingers may be made separately and hinged together.
Patent GB-323522-A (GB)
Title: Gas burner
IPC: F23D14/06
Filed: 1928-07-28
Abstract: 323,522. Bakhuizen, J. W. July 28, 1928. Atmospheric gas burners. -A. burner-head 3 having a conical, cup-shaped or like bore is provided with a corepiece 2 extending downwardly from a movable cover 1, the base of the head being provided with inlet apertures 7 and the upper edge with outlet grooves 4 arranged in pairs with the grooves of each pair inclined towards one another. The core-piece 2 may be separate from the lid 1 and supported by lugs in the head. The latter may be formed with a flange 8 overhanging. the bore.
Patent GB-1268075-A (GB)
Title: Improvements in and relating to photocopying machines
IPC: G03G21/00
Filed: 1969-04-30
Abstract: 1,268,075. Cleaning xerographic drums. RICOH K.K. April 30, 1969 [May 2, 1968], No.22006/69. Heading G2H. A xerographic drum 3 is cleaned for re-use after transferring a developed electrostatic image to a sheet 6 by a movable brush 8 in a container 5 for liquid developer.
Patent GB-750293-A (GB)
Title: Improvements in or relating to control arrangements for fluid pressure actuated single-acting pistons
IPC: F15B11/044
Filed: 1951-09-19
Abstract: 750,293. Engine valve-gear. ZOLLER, H. Sent. 19. 1951 [Sept. 19, 1950, July 20, 1951], No. 22015/51. Class 122(2) [Also in Group XXIX] A valve-gear arrangement for a fluid pressure single acting piston 15 working in a cylinder 14 comprises a fluid-pressure .operated main control valve 4 which controls the supply and exhaust of fluid to and from the cylinder and is itself actuated by fluid-pressure admitted by a first auxiliary control valve 18 actuated by either fluid-pressure or mechanically by the piston 15, and exhausted by a second auxiliary control valve 26 actuated mechanically by the piston 15. Fluid is supplied from a source T through a throttle valve 2 and conduits 9 and 23 to the cylinders 3 and 21a respectively of the main valve 4 and the auxiliary valve 18, both of which valve are of the differential piston type. At the beginning of a working stroke fluid is admitted via an aperture in a gasket 7 in the main valve and a conduit 10 to the cylinder 14, both auxiliary valves 18 and 26 being closed. Towards the end of its stroke the piston 15, uncovers a port 16 in the cylinder 14 and fluid passes through a conduct 17 and moves the auxiliary valve 18 to the left to disengage the valve head 18a from its gasket 21 and fluid from conduit 23 flows through gasket 21 and a conduit 24 to act on the valve 4 and urge it downwards so that it closes the aperture in gasket' 7 and opens a aperture in a gasket 8 through which fluid from the cylinder 14 is exhausted as the piston returns on its idle stroke. The consequent fall in pressure in conduit 17 allows the valve 18 to close again and towards the end of its return stroke the piston 15 contacts the spring-loaded valve 26 and opens it allowing the pressure in conduit 24 to escape via a conduit 25 the aperture in gasket 28 and orifice 30: the main valve 4 then being returned by its spring 12 to its original position and the cycle recommences. In a modification. Fig. 2 (not shown) the port 16 and conduit 17 are omitted and the auxiliary valve 18 is mechanically actuated by the piston 15, being arranged with its stem projecting into the cylinder similarly to the auxiliary valve 26, but at the opposite end of the cylinder thereto. The piston 15 mav be moved during its idle stroke bv a spring, or its own weight, or bv fluid pressure supplied through a pine 35 and acting on a counter-piston 37 of lesser area than piston 15 and reciprocating in a cylinder 36. The pipe 35 may be omitted and fluid supplied to the cylinder 36 through a non- return valve 43 and a passage 42 in the connecting rod 38. The speed of the piston 15 may be controlled during its working stroke by the valve 2 and during its return stroke by adjustment of the spring 12. The stroke of the piston may be varied by providing a number of ports 16 of different sizes and using a selected one, the remainder being blanked off. A power drive for a pump 45 or any other apparatus may be taken from an extension 44 of the counter-piston 37 or from a member 39.
Patent GB-1474593-A (GB)
Title: Manufacture of sodium chlorate by electrolysis
IPC: C25B1/26
Filed: 1974-05-17
Abstract: 1474593 Electrolytic NaClO 3  production PRODUITS CHIMIQUES UGINE KUHLMANN 17 May 1974 [25 Sept 1973] 22049/74 Heading C7B NaClO 3  is made by electrolysis of NaCI solution containing one or more polyphosphorus acids or salts of formula P n O 3n+1  M n+2  or (PO 3 M) n , where M is H or a metal and n is an integer, a substance yielding such a salt or acid on electrolysis or hydrolysis in the solution, or an organic phosphorus acid, whereby alkaline earth metal ions are chemically precipitated and/or cathodically deposited in a loose non-interfering form. Specified acids/salts are metaphosphoric, Na metaphosphate, Na tripolyphosphate, ortho- and pyrophosphoric and their Na salts, ethylenediamine tetramethylene  phosphonic, aminotrimethane phosphonic and hydroxyethane phosphonic acid. Specified precursors include PH3, P, hypo-, meta-, ortho-, pyro- and polyphosphorous acids and their alkali metal salts, phosphorus tri- and pentahalides, hypophosphoric acid and phosphorus oxyhalides. From 0À5-10 times the stoichiometric quantity, relative to alkaline earth cations, may be added. The bath pH, temperature and agitation may be adjusted to produce required results, with a filler for removing precipitates in a recirculation line. The electrolyte may be based on NaCI, NaClO 3 , NaOCI and Na 2 Cr 2 O 7  at pH 6-7. An RuO 2 -Ti anode may be used.
Patent GB-758226-A (GB)
Title: Improvements in supporting structures for rail guided means of transportation
IPC: E01B25/10
Filed: 1954-07-29
Abstract: 758,226. Pylon supports for elevated rail tracks. ALWEG-FORSCHUNG-GES. July 29, 1954 [Aug. 1, 1953], No. 22143/54. Classes 20(1) and 107. [Also in Group XXX] Railway &c. beams 17 freely supported on the upper surface 14 of pylons 11 by bearing plates 18 and levelling wedges 15 are held in horizontal alignment by having digitated ends 20 fitting into corresponding slots in supporting frames 20,- 21. spaced apart by a subsequent filling of concrete. Clearance between the beam end and the frame 21 is filled with a yielding material such as bitumen to allow for expansion. The spacing between the frames 21 and 22 is variable to take up slight differences in the length of the beams. The space filled in with concrete is first provided with reinforcement 23 anchoring the top structure to the pylon, and the top structure forms a continuation of the beams.
Patent GB-187762-A (GB)
Title: Improvements relating to ships' steering gear
IPC: B63H25/36
Filed: 1921-08-20
Abstract: 187,762. Yarrow, H. E. Aug. 20, 1921. Steering-gear.-Comprises means for adjusting the rudder indicating pointer scale on the hand and steam gear pedestals to give correct readings when changing from one gear to the other. Surrounding the pointer a on the hand gear spindle b is a scale d which can be adjusted by hand to agree with the steam gear indicator reading. A pointer on the movable scale may also read on to a fixed scale on the edge of the pedestal. Continuous and automatic adjustment may be effected by attaching the scale d to arms on a hollow spindle encircling the hand gear spindle, such hollow spindle being driven off the steam gears.