baber/WOPTO huggingface dataset:
Patent GB-726789-A (GB)
Title: Triphenylmethane derivatives
IPC: C07D321/04
Filed: 1952-05-30
Abstract: The invention comprises compounds of the general formula <FORM:0726789/IV (b)/1> wherein Y and Z stand for hydrogen, halogen, alkyl, alkoxy, amino or acylamino and m and n are integers. Preferably Y and/or Z are chlorine atoms, a preferred product being the compound of the formula <FORM:0726789/IV (b)/2> The compounds are made by reacting 2 : 21-dihydroxy triphenylmethanes of the general formula <FORM:0726789/IV (b)/3> with a dihalogenomethane, preferably at an elevated temperature, e.g. at about 100 DEG  C., in a closed vessel.  When the initial products are salts they may be converted to the free acid by treatment with a strong acid.  Amine products may be acylated if desired.  The products may also be made by first forming a product free from sulphonic groups and subsequently sulphonating. Corresponding ethers in which the methylene group is replaced by longer alkylene chains may be similarly prepared.  In examples: (1) 2 : 2-dihydroxy-3 : 5 : 31 : 51 : 411-pentachlorotriphenylmethane-211-sulphonic acid is treated with methylene chloride to give 2 : 21-methylenedioxy - 3 : 5 : 31 : 51 : 411 - pentachloro - triphenylmethane-211-sulphonic acid; (2) 2 : 2-dihydroxy - 3 : 5 : 31 : 51 : 411 - pentachloro - triphenylmethane is treated with methylene dibromide and the product is sulphonated to give 2 : 21 - methylenedioxy - 3 : 5 : 31 : 51 : 411-pentachloro - triphenylmethane - 311 - sulphonic acid; (3) 2 : 21 - dihydroxy - 3 : 5 : 31 : 51 - tetrachloro - triphenylmethane - 211 - sulphonic acid is treated as in (1) to give the 2 : 21-methylenedioxy compound; (4) 2 : 21 - dihydroxy - 5 : 51 : 411 - trichloro - triphenylmethane-211-sulphonic acid is reacted with methylene dichloride to give the 2 : 21-methylenedioxy compound; (5) 2 : 21-dihydroxy-3 : 5 : 31 : 51-tetrachloro - 411 - amino - triphenylmethane - 211-sulphonic acid is treated as in (4) to give the 2 : 21 - methylenedioxy compound; (6) the product of (5) is acetylated to the corresponding acetylamine compound; (7) 2 : 21-dihydroxy-3 : 31 - dimethyl - 5 : 51 : 411 - trichloro - triphenylmethane-211-sulphonic acid is treated with methylene dichloride to give the 2 : 21 - methylenedioxy p  compound; (8) 2 : 21 - dihydroxy - 3 : 5 : 6 : 31 : 51 : 61 : 411 - heptachloro - triphenylmethane - 211 - sulphonic acid is converted to the methylene ether; and (9) 2 : 21-dihydroxy - 3 : 5 : 31 : 51 - tetrachloro - 411 - methoxy triphenylmethane is treated with methylene dichloride and sulphonated to give 2 : 21 - methylenedioxy - 3 : 5 : 31 : 51 - tetrachloro - 411 - methoxy - triphenylmethane - 311 - sulphonic acid; the sulphonic acid starting materials and products of these examples being generally in the form of their sodium salts. Specifications 316,900, 330,893, 337,808, 338,126, [all in Class 2 (iii)], and 422,923 are referred to.
Patent GB-310978-A (GB)
Title: Improvements in or relating to radiators
IPC: F28D1/053
Filed: 1929-05-04
Abstract: 310,978. Trane, R. N. May 4, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Electric radiators.-A radiator comprises a tube T having a multiplicity of fins F and containing a removable heating element 38. The element is provided with a screwed flange and is held in position by a union 37. The resistance coil may be in the form of a double spiral. In a modifica. tion the heating element comprises a carborundum rod carried by plugs arranged in the tube. The spaces at the end of the fins are closed at the side of the radiator by plates 85 to form vertical air flues between the fins. Apart from the heating element, the radiator is identical in construction with the radiator described in Specification 269,851, [Class 64 (ii), Heating systems &c.]. If the heating element is removed hot fluid may be passed through the tube T as described in the Specification referred to. Instead of a tube T ih the form shown two straight tubes not communicating with one another may be provided.
Patent GB-1343691-A (GB)
Title: Method of producing metallurgical coke
IPC: C10B57/06
Filed: 1971-05-10
Abstract: 1343691 Coking coal NIPPON KOKAN KK 10 May 1971 [11 May 1970] 14081/71 Heading C5E A method of making metallurgical coke comprises carbonizing in a coke oven a coal to which has been added pieces, wire-like or band-like in form, of a metallic or non-metallic material. Examples include steel, stainless steel, copper, scrap metal, carbon fibres and carbon-rich synthetic resin. The material should have a width or diameter in the range 0À1 to 0À8 mm. and a length in the range 2 to 150 mm., and should comprise 0À01 to 0À5% by weight of the coal.
Patent GB-762023-A (GB)
Title: Improvements in or relating to electron tubes of the crossed-fields type
IPC: H01J25/44
Filed: 1954-05-13
Abstract: 762,023. Magnetrons; travelling-wave tubes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 13, 1954 [May 13, 1953], No. 14112/54. Class 39(1). The negative electrode 2, Fig. 1, of a magnetron with anode 1 and collector 4 has grooves 8 to prevent secondary emission. The grooves may slope away from the cathode 3. In addition a negative electrode may be provided in front of the electrode 2 or the front face of the electrode may be coated with graphite. Anode 1 may be the delay line of a travelling-wave tube. In a circular multi-cavity magnetron, Fig. 7, the cathode is a number of filaments 16 encircling negative electrode 17, or, Fig. 9, two circular cathodes 22 are placed on either side of the electrode 17. The heaters 23 are connected in series through axial hole in electrode 17.
Patent GB-832561-A (GB)
Title: Shot-gun cartridges
Inventor: GOUGH DONALD
IPC: F42B5/30
Filed: 1957-05-03
Abstract: 832,561. Shot-gun, cartridges. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 21, 1958 [May 3, 1957], No. 14146/57. Class 9(1) A 12-gauge cartridge case is made of thermoplastic material, at least the tubular wall being of a high molecular weight polymer, that part of the wall beyond the propellant chamber having a thickness or, if tapered, a mean thickness between 0.026 in. and 0.032 in. Preferably the thickness is between 0.028 in. and 0.030 in. Polymers of ethylene, propylene or butene-1 or co-polymers thereof having a density between 0.88 and 0.97, a melt flow index between 0.01 and 10, preferably between 0.1 and 1, a tensile strength greater than 2,500 lbs./sq. in. and an elongation at 'break greater than 50%, preferably over 400%. In an example, the case is made by injection moulding with an integral head 2 from polythene of density 0.94. Moulding was carried out with a mix at a temperature of 230‹C, the mould temperature being 80‹C and the nozzle temperature 250‹C. The wall 1 is tapered, 0.033 in. thick at the top of the propellant chamber and 0.025 in. thick at the openend. The head 2 houses a brass ignition system.
Patent GB-611839-A (GB)
Title: Improvements in or relating to the inlet and exhaust passages of internal combustionengines
IPC: F02F1/24
Filed: 1946-05-10
Abstract: 611,839. Cylinders. THORNTON, A. C. May 10, 1946, No. 14158. [Class 7 (ii)] A cylinder side-valve pocket 4 has a convex inclined face or bulge 8 so that the valve may be closer to the cylinder bore and the cooling space 7 may be increased. It is thus possible to provide a shorter cylinder head 2 and increase the compression ratio.
Patent GB-553172-A (GB)
Title: Improvements in and relating to dust bins and like refuse containers
IPC: B65F1/02
Filed: 1941-11-04
Abstract: 553,172. Sanitary bins; sheet metal beaded edges of hollow-ware. SIMS, W. H. Nov. 4, 1941, No. 14185. Drawings to Specification. [Class 26] (Also in Groups XVII and XXII] In a meat bin or like refuse container as described with reference to Figs. 1 and 2 of Specification 324,274, [Class 26], both the hoop and the bin wall are provided with one or more horizontal corrugations which preferably extend continuously round the mouth of the bin.
Patent GB-780356-A (GB)
Title: Method of and apparatus for the inductive surface hardening of steel rolls
IPC: C21D1/10
Filed: 1955-05-17
Abstract: 780,356. Surface hardening. DEUTSCHE EDELSTAHLWERKE AKT.-GES. May 17, 1955 [March 18, 1955]. No. 14257/55. Class 72 [Also in Group XI] A process for surface hardening steel rolls comprises rapidly heating the surface to be hardened by a first inductor, maintaining the temperature by a second inductor or other heater and then quenching, the roll being moved axially relative to the heating and quenching equipment. As shown, a roll 1 is moved relatively to a first inductor 6, a second inductor 7, and a quenching ring 8. The inductors may be operated by separate supply systems or may both have the same supply system. Fig. 2 (not shown), in the latter case the supply circuit to one of the inductors containing a variable inductance, e.g. an auto transformer or a choke. The second inductor may be replaced by a resistance heater or gas burner and more than one inductor or heater may be used. The inductors or heaters are independently controlled and may also be moved axially relative to one another. The electrical control of the inductors may be from the generators and in the case of a single generator supplying two or more coils, when one coil is switched off the remainder may also be switched of momentarily and immediately reconnected
Patent GB-1132276-A (GB)
Title: Aluminum alloy deoxidizing-desmutting composition and method
IPC: C23G1/12
Filed: 1966-03-31
Abstract: 1,132,276. Cleaning metals. DIVERSEY Ltd., March 31, 1966 [March 31, 1965], No.14275/66. Heading C7E. Aluminium surfaces are deoxidized by contacting with a solution comprising (per cent by weight) nitric acid 7 to 60, sulphuric acid 10 to 70, hydrofluoric acid at least 0À5, phosphoric acid 0 to 50, a surfactant containing a fluorinated hydrophobic up to 3, and water 5 to 50, the percentages of acid being on an anhydrous basis. The term hydrofluoric acid is intended to include solutions of the following salts:- ammonium or sodium bifluoride, fluoroboric acid or sodium silico fluorido. The solution may be made up from two packages (A) an aqueous solution of nitric, phosphoric and sulphuric acid and the surfectant and (B) a dry mixture of fluorides and surfectant.
Patent GB-493327-A (GB)
Title: Improvements in and relating to electric communication systems
IPC: H04B3/20
Filed: 1937-05-22
Abstract: 493,327. Two - way transmission. TELEPHONE MANUFACTURING CO., Ltd., PADDLE, L. H., and FLINT, J. G. May 22, 1937, No. 14289. [Class 40 (iv)] In a system in which a transmission path is controlled by a variable attenuation network, the network is controlled by a thermionic valve having a control electrode and two other electrodes operating as output electrodes, one of the outputs being connected to the attenuation network and the other, as described, being connected to control arrangements of a transmission path in the opposite direction. In the two-way system shown, signals in one of the paths applied over transformer T1 and rectifier D1 decrease the negative potential on the control grid of V1 so that the consequential increase of screen current varies the attenuation of one or both networks A1, A2 in the transmission paths (not shown). Transformer T3 in the anode circuit of V1 applies signal voltages to rectifier D3 which increases the negative voltage on the control grid of V2 associated with the other transmission path so that a normal input to V2 is ineffective. The networks A1, A2 may be normally of high attenuation in which case a signal in one path reduces the attenuation of the associated network, or they may be of intermediate value varied in opposite senses by signals in either of the transmission paths.
Patent GB-1134417-A (GB)
Title: Improvements relating to beds
Inventor: AGNEW KENNETH MALCOLM
IPC: A47C19/00
Filed: 1966-03-31
Abstract: 1,134,417. Beds. J. NESBIT-EVANS & CO. Ltd. 5 Sept., 1966 [31 March, 1966], No. 14309/66. Heading A4J. In a hospital bed, a sheet metal mattress support 20 extends in a curve between the side members 15 of the mattress frame. It is secured by rivets 22 and further fixing means (23) at the ends of the bed prevent the curvature from being reversed.
Patent GB-764604-A (GB)
Title: Improvements relating to book-rests
IPC: A47B23/00
Filed: 1954-05-17
Abstract: 764,604. Book-rests. CAVE, E. H. P., and WILES, A. E. May 13, 1955 [May 17, 1954], No. 14318/54. Class 52 (3). A book-rest for use in bed comprises a book support A adjustable along, and angularly relative to, an arch J which straddles the user and which is pivoted at its ends to arms L resting along the sides of the bed. The arch is clamped in adjusted position by screws M. The arch is made. in two halves interfitting at the highest point and, for a double bed, an extension piece is fitted between the two halves and two supports A are provided. The support A has a ledge N, a prong B for engaging in the spine of the book and leaf-holders H which can be adjusted to and fro the support A by a screw clamp I. The support A is slotted at C to take over pins F upstanding from a U- clamp D mounted on the arch and secured in adjusted position by a screw clamp E. The whole assembly is disassemblable for packing in a flat box.
Patent GB-437712-A (GB)
Title: Improvements in or relating to fish lures
IPC: A01K85/14
Filed: 1935-05-16
Abstract: 437,712. Fishing. HAUFFMAN, A. W., 129, Ringvõgen, Stockholm, and ZETTERBERG, T. A. G., 8, Jõrpen, Lidingo, near Stockholm. May 16, 1935, No. 14340. [Class 48] A stabilizing member disposed above a lure comprises a triangular base 7 with upstanding flanges 8, 9. It is secured to a ring 4 or a ring 10.
Patent GB-119456-A (GB)
Title: Improved Pin for the Connection of Mechanical Structures and the like.
Inventor: FRANC JOSEPH MARIE ETIENNE
IPC: F16B21/12
Filed: 1918-09-03
Abstract: 119,456. Franc, J. M. E. Sept. 3, 1917, [Convention date]. Pins for cottering.-Cotter pins are provided with spring arms b, b<1> which embrace a bolt &c. to secure the pin in position. The arms b, b<1> may have turned-out ends c, Fig. 3, or eyes d, Fig. 2, to facilitate withdrawal of the pin. The arms are formed separately from the pin a and may be riveted thereto as in Fig. 2, bent into the tubular end as in Fig. 3 or otherwise attached. The Specification as open to inspection under Sect. 91 (3) (a) comprises also various forms in which the arms are integral with the pin and a form in which a curved spring is passed through a hole in the pin a. This subject-matter does not appear in the Specification as accepted.
Patent GB-391620-A (GB)
Title: Improvements in and relating to the manufacture of incandescent cathodes for electric discharge devices
IPC: H01J9/04
Filed: 1932-05-20
Abstract: 391,620. Thermionic cathodes. GAR. LAND, C. S., Oaklands, Batten Hali, Worcester. May 20, 1932, No. 14352. [Class 39 (i).] A filament or core is coated in progressive stages with three coats of electron-emitting materials, the third coating containing a material of relatively high radio-activity, such as oxide of radium or mesothorium. The first coating contains a mixture which, on incinera. tion, gives 64-74 per cent of barium oxide, 25-28 per cent of strontium oxide, 2-3 per cent of chromium oxide and 3-5 per cent of thorium oxide, the second coating gives a mixture of 76À5-78 per cent of barium oxide, 20À22 per cent of thorium oxide, and 1-1À5 per cent of cerium oxide, and the third coating a mixture of 88-92 per cent of thorium oxide, 3-5 per cent of lanthanum oxide, 5-7 per cent of neodymium oxide, and 0À001 per cent of mesothorium oxide. The coatings are made adhesive by using a suspension of the oxalates of the metals in a strong aqueous solution of the nitrates in the presence of traces of sulphates. The filament &c. previously heated in a stream of hydrogen, is passed from one reel to another below vessels containing the suspensions and provided with hollow stems leading to the filament. A current is passed through the filament so as to decompose the nitrates.
Patent GB-202713-A (GB)
Title: Improvements in starting devices for internal combustion engines
IPC: F02N15/02
Filed: 1922-05-22
Abstract: 202,713. Bignamy, J. B. May 22, 1922. Turning-gear.-An electric starter comprises a screw-threaded shaft 3 driven from a motor 2 through worm gearing enclosed in a, casing 10 and carrying a threaded clutch member 4 movable automatically into engagement with a clutch member 1 on the engine shaft. A loose collar 6 fitting in a groove in the member 4 carries contact members for closing switches 7, 8 when the clutch members are in engagement. At starting, a main switch 12 is closed and the depression of a push button 11 connects the motor 2 to a battery 13 through a resistance 15. When the members 4, 1 come into engagement, closing the switches 7, 8, the resistance 15 is cut out, the motor 2 receiver full current, and the push button 11 ma.y be released. At the same time, an indicator lamp 14, connected to the battery 13 and the frame of the starter, lights up. When the engine starts, the clutch member 4 is automatically disengaged and the motor 2 switched off by the opening of the switches 7, 8. The shaft 3 is hollow and may be engaged and driven by a starting-handle.
Patent GB-907258-A (GB)
Title: Improvements in or relating to low pressure oil burners
IPC: F23D11/10
Filed: 1961-04-20
Abstract: 907,258. Spray burners. EASTWOOD, J. A. April 20, 1961 [Oct. 10, 1960], No. 14395/61. Class 75 (1). [Also in Group XXIX] The oil discharged from the end of the oil pipe 3 of a low-pressure oil burner is controlled by a cylindrical valve 9 which is moved in the outlet of the oil pipe 3 by a spindle 4 and has a plurality of parallel grooves 10, 11 of gradually increasing depth from the discharge end 6 rearwardly. Some of the grooves extend only over the part of the valve 9 remote from the discharge end 6. The grooves may be of rectangular or V-section. The oil streams from the grooves are atomized by air in a nozzle 2. The air is swirled by a propeller 5 clamped between the air nozzle 2 and the end of the oil pipe.
Patent GB-752399-A (GB)
Title: Improvements relating to egg-counting devices
Inventor: COPE CECIL JOHN
IPC: A01K31/16
Filed: 1954-05-17
Abstract: 752,399. Counting-apparatus.COPE, WHELON & CO., Ltd. April 12, 1955 [May 17, 1954], No. 14421/54. Class 106 (1). An egg-counting device comprises a metal strip 5 provided with numbered notches 6 in any of which a ring 10 can be placed. The strip 5 is fitted by tongues 9 to the uprights 4 of a cage 2 of a hen battery.
Patent GB-543234-A (GB)
Title: Manufacture of plastic materials
IPC: B32B17/10
Filed: 1940-09-21
Abstract: 543,234. Polyvinyl acetal resin compositions ; triethylene glycol dipelargonate ; polarizing- apparatus ; compound sheet materials. DU PONT DE NEMOURS & CO., E. I., and MARKS, B. M. Sept. 21, 1940, No. 14430. [Class 2 (iii)] [Also in Groups VIII and XX] Plastic compositions comprise 100 parts by weight of a partial polyvinyl butyral resin containing polyvinyl acetate, 0 to 2 per cent. by weight and polyvinyl alcohol, 17.5 to 22 per cent. by weight, admixed with 43 to 51.5 parts by weight of triethylene glycol dipelargonate. The compositions may be formed into sheets for the surface protection of layers of material such as metal, paper, cloth or wood, or for use as inter-layers in laminated material, e.g. safety glass or light polarizers ; in the latter case, light polarizing crystals are orientated in the inter-layer or a sheet of polarizing material is embedded therein. The sheets may be bonded to the glass by the application of heat and pressure. Triethylene glycol dipelargonate is prepared by reacting triethylene glycol with pelargonic acid in the presence of an esterification catalyst, the reaction being preferably condensed in a solvent vehicle. The product is. refined by distillation in vacuo.
Patent GB-441364-A (GB)
Title: Low frequency induction furnace
IPC: H05B6/02
Filed: 1935-05-17
Abstract: 441,364. Heating by electromagnetic induction. HAUSHEER, R. R., Baden, Switzerland.May 17, 1935, No. 14533. Convention date, May 18, 1934. [Class 39 (iii)] A heating chamber 3 of iron or steel alloy, formed with recesses or pockets 2, is surrounded by a primary coil 5, surrounded by an envelope 6 of sheets of a magnetic metal, the envelope being connected to the ends of the chamber to form a closed magnetic path. The closure may be formed by flanges on the ends of the chamber. The apparatus may be used for heating solids, liquids, or gases. A cover 14 and a base 8 are provided. Ducts 16, 17 in the base communicate with recesses- 2 and the interior of the chamber respectively. At the other end the chamber and the recesses are in communication by means of the cover.
Patent GB-170887-A (GB)
Title: Improvements in or relating to trucks or the like
IPC: B62B3/06
Filed: 1920-05-28
Abstract: 170,887. Barrett, A. M. May 28, 1920. Hand-trucks.-In a lifting truck comprising a wheeled main frame and an elevating- frame adapted to be raised by ratchet-mechanism actuated by a rocking member which is adapted to be operatively engaged by a steering-lever regardless of the lateral position of the latter, the rocking member and the steering-lever have their adjacent ends adapted for direct engagement substantially over the vertical axis of the steering- wheels. The lower platform 16, Fig. 2, carries the lifting-platform 25 by a yoke 23 on the rear axle 18 and arms 28 on a cross-shaft 26 mounted in bearings in the plate 17. A dash-pot connects a front cross-bar in the frame 25 with a rear crossbar on the frame 16, which bars are also connected by a spring to ensure descent of the platform. The plate 17 at its front end has a sleeve member 35, Fig. 4, having a two-part neck, one part 41 being a lug on the axle 36, and the other part 42 in toothed connection therewith, being held down by a bolt 43, so that its flange 44 rests on the plate 17. Ears 45 of the flange carry a pivoted steering lever 46 carrying a roller 56 at its lower end, which roller is substantially in the vertical axis of rotation of the axle 36. The roller 56 contacts with a rounded end of a yoked lever 53, Fig. 6, carried loosely in a shaft 50 to which is fixed a ratchet-wheel 52 and a gearwheel 49 gearing with a wheel 48 on the shaft 26. The lever 53 carries a pawl 54 through which the frame 25 is raised by repeated downward movements of the lever 46. Contact between the end of the lever 53 and the shaft 26 prevents the roller 56 from passing from operative connection with the other end of the lever. A holding pawl 62, mounted on a cross-shaft 58, is yieldingly held against the ratchet-wheel 52 by a spring 61 on a lever 60 on the end of the shaft. To release the pawls to lower the frame 25, a pedal-lever 68 is mounted on a sleeve 59 on the shaft 58 and this sleeve carries an arm 64 which, during the first movement of the pedal lever, contacts with an arm 65 connected with the pawl to raise it out of contact. Further movement of the pedal lever causes a lateral projection thereon to depress the end of the lever 60 to release the pawl 62.
Patent GB-797533-A (GB)
Title: Improvements in or relating to dental equipment
IPC: A61C1/00
Filed: 1955-05-20
Abstract: 797,533. Dentistry apparatus. STEPHENS, R. R. May 20, 1955, No. 14671/55. Class 81 (2) In order to provide for cleaning and drying a tooth cavity in course of preparation a dental handpiece is provided with a nozzle or nozzles providing alternatively a spray of liquid and a jet of air. A control assembly C contains valves, controlled by a foot switch A, mounted on the normal motor control unit, and the valves control a supply of air from a pipe D to two lines E, one of which includes a sprayproducing device F. The two are combined at G and a flexible pipe H leads to the slip connection J, at which point detachable connections are made with nozzles on the drilling handpiece. The valves and switches may be arranged so that a spray and air jet are produced independently or so that an air jet is turned on by an initial movement of a pedal and further movement turns on a fluid supply which is carried along by the same air stream. Alternatively the control switches may be on the handpiece instead of being foot-operated.