baber/WOPTO huggingface dataset:
Patent GB-1418123-A (GB)
Title: Knife block for a tufting machine
IPC: D05C15/24
Filed: 1973-04-25
Abstract: 1418123 Knife supports B & J MACHINERY CO INC 25 April 1973 [27 April 1972] 19751/73 Heading D1G The knives 16 of a tufting machine are carried in blocks 20 which engage channels 46 in the front face of the oscillatory knife bar 22. The blocks also present shafts 56 which engage holes 58 in the bar 22 to be secured by screws 62. The channels 46 are so disposed to present the blocks and knives at 12 to the veritcal and at an angle of 5 to the normal to the front face of the bar. Each block carries two knives in channels 26 and are there secured by clamp means 36.
Patent GB-1213345-A (GB)
Title: Recovery of epsilon-caprolactone
IPC: C07D315/00
Filed: 1968-04-26
Abstract: 1,213,345. Recovery of #-caprolactone &c. BADISCHE ANILIN- & SODA FABRIK A.G. 26 April, 1968 [27 April, 1967], No. 19822/68. Heading C2C. Epsilon-caprolactone and alkane dicarboxylic acids are recovered from mixtures consisting mainly of monocarboxylic acids, dicarboxylic acids and #-hydroxycaproic acid contained in the washing solutions obtained from the oxidation of cyclohexane in air, by removing all or nearly all the water with or without the major part of the mono-carboxylic acids by distillation. The residue is heated to 180-250‹ C. at a pressure of 1-20 mm. Hg. with the addition of 1-30% by wt. of an additive of one or more of phosphoric acid, phosphorus pentoxide, boric acid and boric anhydride so that volatile constituents are distilled off. The vapour is subjected to fractional condensation and the fraction containing the alkane dicarboxylic acids is crystallized from a solvent to separate the acids, while the #- caprolactone containing fraction is rectified at distillation temperatures less than 150‹ C.
Patent GB-680868-A (GB)
Title: Improvements in and relating to the treatment of gases with liquids
Inventor: BORGARS DOUGLAS JOHN
IPC: B01J19/30
Filed: 1950-08-11
Abstract: 680,868. Contacting gases with liquids. IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 18, 1951 [Aug. 11, 1950], No. 20003/50. Class 55 (ii). A tower 1 in which gases are contacted with liquids has arranged therein a packing comprising a number of layers of spaced, parallel bars 2 of diamond cross-section such that the free area within the tower at any layer of bars in the horizontal plane which includes the horizontal area of the bars being between 40 per cent and 60 per cent of the total area at that plane of the tower, liquid being supplied at least at the rate of 1 cubic metre per hour for each 10 per cent of the free area to each square foot of the total area. The bars may have a horizontal cross-sectional width of from 1 to 4 inches.
Patent GB-812181-A (GB)
Title: An improved polarised electromagnetic relay
Inventor: LELLIOTT SIDNEY
IPC: H01H51/32
Filed: 1956-06-28
Abstract: 812,181. Electromagnetic relays TYER & CO. Ltd. Aug. 27, 1957 [June 28, 1956], No. 20025/56. Class 38 (5). A polarized relay has two axially aligned electromagnets 10, 11 with the free end of a blade armature 19 in the gap between their cores 9. The other end of the armature is fixed in a block 18 which is pivoted at 17 and carries the moving contacts. The polarizing permanent magnet 13 is fixed to the base 2 between two supporting projections 7 and has a block 21 attached to one end. Projecting from the block 21 is a triangular piece 22 with its apex mid-way between the ends 8 of the cores 9 so as to magnetically bias the armature 19 to the mid-position. The block 21 is adjustable by means of a slot 24 and the electromagnets 10, 11 are mounted on adjustable brackets 12. The coils are connected in series so as to move the armature to one side or the other with one core attracting, and the other repelling the armature. In Fig. 5 two brass strips 34 are mounted on but insulated from the block 18 and carry phosphor-bronze springs with contacts 37 arranged to act as change-over contacts. The block 18 may alternatively carry a single contact movable between a pair of adjustable fixed contacts (Fig. 4, not shown). The length of the armature 19 is about twice the distance of the contacts 37 from the pivot so as to give a mechanical advantage to increase the contact pressure.
Patent GB-475980-A (GB)
Title: Improvements in and relating to gas masks
IPC: A62B18/02
Filed: 1936-07-20
Abstract: 475,980. Gas-masks. FATRA AKCIOVA SPOLECNOST. July 20, 1936, No. 20028. Convention date, March 13. [Class 81 (ii)] [Also in Group V] A gas-mask has eye-holes arranged like a pair of spectacles and an inhalation passage separated from the interior of the mask by a partition 7 and terminating between the eyeholes. The mask is made from rubber in a mould as shown in the Figure.
Patent GB-734646-A (GB)
Title: Improvements in or relating to a machine for dispensing pressure-sensitive tape
IPC: B65H35/00
Filed: 1953-07-20
Abstract: 734,646. Adhesive tape dispensers. DERBY SEALERS, Inc. July 20, 1953 [Aug. 1, 1952], No. 20047/53. Class 18. Adhesive tape 57 is drawn off a supply roll 14 by a feed roller 46 and stripper 47 mounted upon a carrier 30 pivoted on the spindle 12 of the supply roll, the feed roll being rotated through gearing when a handle 21b is depressed while the carrier member is held stationary to feed the tape forward, and the carrier member being then moved while the feed roller is held stationary to move the tape against a severing knife 76. A toothed wheel 17 is rotatably mounted on the spindle 12 fixed to the frame 10 and also pivoted on the spindle is a lever 21 carrying the handle 21b and a pawl 23 engaging the teeth of the wheel 17. The feeding and stripping rollers 46, 47 each have gear wheels engaging a pinion 50 driven by the wheel 17 when this wheel rotates relatively to the carrier 30. During the first part of the downward movement of the handle 21b a detent 58 prevents anticlockwise movement of the carrier 30 so that the feed and stripping rollers are rotated and feed the tape forwardly beneath a roller 56 on the carrier. A projection 64 on the lever 21 then contacts the detent 58 and moves it to allow the carrier 30 to be rotated by a projection 66 on the lever 21. Rotation of the feed and stripper rollers thus ceases since the carrier 30 is rotating with the toothed wheel 17. Further downward movement of the carrier causes fork-like stripper members 73 on an arm 68 to project beyond the periphery of the discs of the stripper roller and cause the dispensed portion of the tape to project forwardly in a horizontal position, and the teeth of the pinion on the stripper roller are engaged by a tooth 82 on the arm 68. The lower edge of a plate 54 on the carrier 30 then engages the tape and presses its tacky side against the top surface of a spring- pressed knife guard 78, depressing 'the guard so that the knife enters the space between the plate 54 and the roller 56 and severs the tape leaving its rear end adhering to the knife guard 78. On release of the handle 21b the parts are returned to their original position by springs. A stop 28 adjustable in holes 29 on the frame enables the length of tape dispensed to be adjusted. Specification 734,645 is referred to.
Patent GB-574888-A (GB)
Title: Improvements in or relating to filters for liquids or gases
IPC: B01D35/10
Filed: 1943-12-02
Abstract: 574,888. Filters. HEATHER, F. Dec. 2, 1943, No. 20168. [Class 46] [Also in Group XXVIII] Gas or liquid to be filtered passes transversely through one or more brush type filtering elements, each comprising a stem having one or a plurality of closely-arranged rows of substantially parallel bristles projecting outwardly from one or both sides only thereof. The brush shown in Fig. 1 comprises bristles 1 clamped between two stems 2 by rivets 5. The bristles before assembly may be glued between two strips of tape or may be stitched to one or two lengths of tape. More than one row of bristles may be provided as shown in Fig. 4 where two rows of bristles are separated by a bar 8, one row of bristles being coarser than the other row. The opposed faces of the clamping stems may be shaped to form a brush with a corrugated arrangement of the bristles, the corrugations being rounded, V-shaped or of square form. The bristles may project from one side only of the clamping stems. In a modification the bristles 1 are arranged as shown in section in Fig. 7. Fig. 8 shows a filter formed from a number of brushes arranged within a frame 14, the ends of the bristles of each brush intermeshing with bristles of adjacent brushes. In the arrangement shown in Figs. 14 and 15, an air filter comprises brushes 32 arranged around a perforated tube 28 closed at one end, the other end being adapted to be connected to the intake of an internal combustion engine or an air compressor. In a modification the clamping stems are of arcuate section, and each brush consists of spaced layers of bristles with the bristles and clamping stems arranged alternately. The brush elements may comprise goat-hair or horse-hair, grasses, cotton, wool, silk, nylon, asbestos, metal, bristle, or a mixture of such materials. Specifications 533,525, [Group X], 537,017, and 542,560, [Group XXVIII], are referred to.
Patent GB-239837-A (GB)
Title: Improvements in machines for drilling precious stones, in particular diamond drawing dies
IPC: B28D5/02
Filed: 1925-08-11
Abstract: 239,837. Patent-Treuhand-Ges f³r Elektrische Gl³hlampen. Sept. 10, 1924, [Convention date]. Drilling-machines.-In a machine for drilling precious stones, particularly diamond drawing dies, the feed of the die to the drill is automatically stopped after a predetermined amount of movement due to wear of the drill has taken place, in order that the thickened part of the drill may not contact with the work and enlarge the hole. The die h is secured to a holder g by soldering in the usual manner, and the holder is reciprocated relatively to the rotary drill c by an adjustable spring l and cam n acting through a lever o, the holder being supported on rollers f. A bar q slidable in a bearing p adjacent the work-holder carries an adjustable collar w adapted to contact with a stop x on the holder. In operation, the work is fed against the stationary drill and the collar w is adjusted so as to contact with the stop x. A plate t. of a thickness equal to the permissible wear of the drill, is then moved by a lever u between the bar q and a fixture s in order to displace the collar against the action of a spring r by an amount equal to the thickness of the plate t and a rod v. also on the lever u, simultaneously locks the collar against displacement. On rotating the drill and the cam the machine operates until the stops w, x again make contact. This contact may complete an electric circuit to operate one or more signals such as lamps, bells, drop-signals &c., and may also serve to stop rotation of the cam n and apply an electromagnetic brake to the drill-spindle. In modifications, the collar w may be fixed and the stop x adjustable, on the workholder, or both may be adjustable, and the adjustment may be effected by a screwed spindle. The plate t is removable to vary the feed, and means other than the cam n may be employed to retract the work periodically.
Patent GB-320405-A (GB)
Title: Improvements in electrical condensers
IPC: H01G4/38
Filed: 1928-07-12
Abstract: 320,405. Coursey, P. R., and Dubilier Condenser Co. (1925), Ltd. July 12, 1928. Condensers are subdivided into three or more main component parts or units by means of two or more terminals connected thereto such that the high frequency current flowing through the complete condenser is subdivided between the parts or units. The three parts C' - - C<3> have their terminals T<1>, T<2> so arranged that the high frequency current flows from one to the other either through the part C' or through C<2>, C' in series and the clamp M. The individual parts may comprise a number of series connected elements, the number of these elements being the same for each current path. The parts are secured by clamping plates P<1>, P<2> and the metal clamp M which comprises end portions M<1>, M<2> and side tension strips, rods, or bolts. The clamp M may alternatively be of insulation, in which case a conductor may be provided to connect the plates P<1>, P<2>. The whole condenser may be supported by its terminals T<1>, T<2> in a container filled with wax or oil. The container may be of metal and may constitute or carry a terminal for an intermediate tapping on the clamp M, and the latter may be of circular, rectangular (as shown), or other convenient shape. The arrangement of the parts in the container is symmetrical with regard to the terminals mounted thereon.
Patent GB-474268-A (GB)
Title: Improvements in or relating to safety glass
IPC: C08K5/103
Filed: 1936-07-22
Abstract: An incomplete polyvinyl acetal resin plasticized with an ethylene glycol dihexoate is used as the interlayer in compound glass.  Di- and tri-ethylene glycol dihexoates are specified, and the hexoic acid may be the straight-chain caproic acid, isocaproic acid, or 2-ethyl-butyric acid.  The resin may be made by reacting 2,5--8 mols. of polyvinyl alcohol with 1 mol. of a straight-chain aliphatic aldehyde containing 2--6 carbon atoms, e.g. butyraldehyde, or an unsaturated aldehyde.  The plasticizer constitutes 25--45 per cent of the mixture.
Patent GB-1019497-A (GB)
Title: Improvements in rotary molecular vacuum pumps
Inventor: GARNIER HENRI LOUIS
IPC: F04D19/04
Filed: 1964-05-15
Abstract: 1,019,497. Molecular vacuum pumps. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION & COMMISSARIAT A L'ENERGIE ATOMIQUE. May 15, 1964 [June 5, 1963], No. 20393/64. Addition to 1,019,272. Heading F1C. In the disc for a molecular vacuum pump described in the parent Specification, the blades are inclined relatively to the plane of the disc at an angle between about 12 degrees and about 28 degrees, and the holes formed at the end of each slot to prevent spreading of the slots into the material of the disc are inclined in the same general direction as the blades but at an angle between about 35 degrees and about 45 degrees relatively to the plane of the disc and therefore at an angle to the blades.
Patent GB-400367-A (GB)
Title: Improvements relating to machines for covering cores by winding
IPC: B65H23/06
Filed: 1932-07-20
Abstract: 400,367. Covering cores by winding. ETABLISSEMENTS ROTATISS, 14, Rue Frederick Lemaitre, Paris. July 20, 1932, No. 20497. Convention date, July 31, 1931. [Class 109.] The unwinding of the material such as paper wound on a roller or bobbin or in a roll 11 is subjected to a variable braking action by means of an electromagnet 15, which acts on a disc 12 resting on the roll. This rests on felt loose on or secured to a non-magnetic plate of fibre, wood or metal fixed to a member 7 on a spindle 5 rotated by bevel gearing from a shaft carrying fast and loose pulleys, brass pins 8 on the member 7 fitting through holes in the disc 12. The energizing current passes through a variable rheostat 28 so that its amount and attractive force on the disc 12 and consequent braking effect can be varied by hand whilst the machine is running. When the driving belt is moved on to the loose pulley, a wiper 18 depresses a spring contact 19, 20, short-circuiting the rheostat and producing a powerful braking action opposing the inertia of the roll 11.
Patent GB-319853-A (GB)
Title: Improvements in operating internal combustion engines with pulverulent fuel
IPC: F02B45/02
Filed: 1928-07-14
Abstract: 319,853. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). July 14, 1928. Materials, actuating.-A Diesel engine using pulverulent fuel works with oxygen or air enriched with oxygen as the comburant.
Patent GB-712819-A (GB)
Title: Improvements in electrical capacitors, more particularly for electric discharge lamp circuits
IPC: H01G4/38
Filed: 1950-08-18
Abstract: 712,819. Electric Condensers. GENERAL ELECTRIC CO., Ltd., CHUBB, A. A., and HALLIDAY, V. N. Aug. 3, 1951, [Aug. 18, 1950.] No. 20539/50. Class 37. A multiple condenser forming two condensers comprises four foils F 1  ... F 4  interleaved with paper PI  ... P 4  and rolled, the foils F 2 , F 4  being connected so as to form a common electrode for the two condensers, so that if one breaks down the other also breaks down. The condenser is particularly suited for the circuit disclosed in Specification 712,815, [Group XXXV], operating electric discharge lamps.
Patent GB-659262-A (GB)
Title: A multiplying gear for driving an electrical generator from the propeller shaft of a ship
IPC: F16D3/62
Filed: 1949-08-08
Abstract: 659,262. Flexible couplings. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Aug. 8, 1949, No. 20553. Convention date, Aug. 9, 1948. [Class 80(ii)] In multiplying gearing between the propeller shaft of a ship and an electric generator, the toothed rim 11 of one of the gears is coupled to its nave by resilient means, the spring coefficient of which varies with the load, and adjustable friction damping means 13 are also provided. As shown in Fig. 2, pairs of helical springs are used, the inner spring 8 of each pair coming into action only after a predetermined compression of the outer spring 7. Alternatively, single conical springs may be used. As shown in Fig. 7, leaf springs 18 are used, coacting with curved abutments 22 so that the effective length of the springs varies with the load.
Patent GB-1140651-A (GB)
Title: Adhesive subbing composition
IPC: C08J7/043
Filed: 1967-05-03
Abstract: 1,140,651. Compositions of terpolymers. E. I. DU PONT DE NEMOURS & CO. 3 May, 1967 [3 May, 1966], No. 20618/67. Heading C3P. [Also in Divisions B2 and G2] A subbing composition comprises a copolymer of (a) 70 to 90 parts by weight of vinyl acetate, (b) 7 to 40 parts by weight of an alkyl acrylate, the alkyl portion of which has 1 to 4 carbon atoms, and (c) 3 to 30 parts by weight of itaconic, fumaric, acrylic or methacrylic acid, in an organic solvent or aqueous dispersion. In the examples, copolymers are prepared from vinyl acetate, methyl acrylate, itaconic acid, fumaric acid and ethyl acrylate using sodium lauryl sulphate, water, ammonium persulphate, and sodium metabisulphite. In Examples V and VI the composition is coagulated by treating with potassium nitrate solution and the polymer dissolved in acetone and methylene chloride. The compositions are used to coat substrates including photographic films.
Patent GB-408992-A (GB)
Title: Improvements in or relating to metal cutting broaches
IPC: B23Q11/02
Filed: 1932-07-21
Abstract: 408,992. Broaches. LAPOINTE MACHINE TOOL CO., Ltd., RANDALL, F. E., Edgware, and HARRIS, E. W., Beauchene, Fairfield Crescent, Edgware, Middlesex. July 21, 1932, No. 20651. [Class 83 (iii).] A broach for cutting splined shafts or other serrated spindles such as those used in textile machinery is built up from a number of internally toothed rings a mounted in a housing e and separated by guide plates d formed with segmental extensions p which form between them a passage q in front of each cutting plate to permit the escape of chips &c. The cutters and guide plates are held against rotation by a longitudinal key j. The housing has an integral flange h for attachment to the machine and is slotted at k and formed with holes l for the escape of metal and lubricant. Each successive cutter may be smaller than the preceding one or the cutters may be arranged in pairs with the members of each pair of the same diameter.
Patent GB-337743-A (GB)
Title: Improvements in or relating to means for synchronising transmitters and receivers in picture and the like telegraph systems
IPC: H04N5/067
Filed: 1929-07-05
Abstract: 337,743. Smithy S. 33. July 5, 1929. Copying-telegraphs. - Picture and like transmitters and receivers are driven by synchronous motors energized from a constant frequency power supply constituted by an ordinary public mains supply such as the " grid "system, said motors being such that the transmitting and receiving scanning devices run in synchronism. The invention is described as applied to a picture telegraph transmitter of the electro-optical type comprising a source of light 3 and a system of lenses 2 whereby the picture, which is wrapped on a glass drum 1 is scanned by a spot of light 4 and the consequent variations of light are transferred into current-variations by a. photo-electric cell 5. The arrangement is driven by a motor 6 energized from a constant-frequency power system common to the transmitter and receiver and the phase of the device is adjusted by rotating the stator of the motor 6 by a handwheel 7 or any other convenient way. Reference has been directed by the Comptroller to Specification 175,617.
Patent GB-819866-A (GB)
Title: Improvements in or relating to rotary slide valves
Inventor: NORTH JOHN DUDLEY
IPC: F04B1/20
Filed: 1955-07-18
Abstract: 819,866. Valves. BOULTON PAUL AIRCRAFT Ltd. July 11, 1956 [July 18, 1955], No. 20707/55. Class 135. A rotary slide valve comprising a block 1 and a valve plate 2 has a ball, roller or needle bearing between the sealing surfaces to facilitate relative rotation during which ports 3 are brought in and out of registry with ports 4. A predetermined clearance is maintained between the sealing surfaces by three adjustable screws 9 bearing on the race 8, or alternatively shims may be used.
Patent GB-1486604-A (GB)
Title: Swivel castor
IPC: B60B33/02
Filed: 1975-04-21
Abstract: 1486604 Swivel castors HOMA CASTORS Ltd 21 April 1975 [10 May 1974] 20716/74 Heading A4U [Also in Division F2] A swivel castor of the kind referred to in Specification No. 1367649, and also including an upwardly biased plunger 20 extending through the stem 15 and bearing on an upwardly biased pivoted brakeshoe 22, for braking the wheel 12, has the tail end 22b of the brakeshoe operatively connected to an upwardly biased swivel lock detent 27 that can move up and down in the lower part of the bearing housing 10b so as to project into a recess or hole 16b in the upper part of the bearing housing to lock said upper and lower parts whenever the plunger is partially depressed to an intermediate position without the brakeshoe being applied to the wheel. The upper part has two recesses 16b spaced apart 180 degrees. The tail end 22b is connected to the detent 27 by a screw 28 surrounded by a helical compression spring 30, a further coaxial conical helical compression spring 31 upwardly biasing the plunger 20 and brakeshoe 22. The plunger 20 is depressed by a cam 25 having a deeper recess 25a which determines the upper plunger position in which the wheel 12 can rotate and the fork 10 can swivel, a shallower recess 25b which determines the intermediate plunger position in which the fork only is locked, and a concentric portion 25c which determines the lowest plunger position in which both the fork and wheel are braked. Two castors may be linked to operate simultaneously, and the swivel lock on one may be immobilized. This can provide for tracking of equipment at one end only.