baber/WOPTO huggingface dataset:
Patent GB-285574-A (GB)
Title: Improvements in trimming mechanism for sewing machines
IPC: D05B29/06
Filed: 1926-11-19
Abstract: 285,574. Armstrong, J. J. V., (Union Special Machine Co.). Nov. 19, 1926. Trimming; threads, attaching. - The movable trimming blade is mounted on a reciprocating member which carries a latch by which it can be connected to a constantly vibrating member, the latch being releasable whilst the machine is running to throw out the trimming mechanism but incapable of reengagement unless the machine is stopped. The mechanism is described as applied to a machine suitable for stitching an edging to a body fabric and having a thread-laying hook 15 co-operating with two needles and a looper which engages both needle-thread loops. The hook 15 is carried by a lever 16 mounted to swing about the presser-bar and actuated by mechanism comprising a link 17, lever 18, rock-shaft 19, lever 22, and a pitman 24 operated by an eccentric on the under shaft. The trimming mechanism comprises a fixed lower blade 37 and a curved movable blade 38 clamped by a set-screw in an arm 41 of a corner 40. The blade 37 is carried by a bracket 57 secured to a depending apron on the cloth-plate. The trimmed-off strip is deflected by a deflector 69 against the inclined section 70 of a cover plate 68. The carrier or head 40 has a sleeve 71 sliding on a guide rod 72 secured in a bracket which also carries a rectangular guide rod 78 engaged by an extension 80 on the head. The head is reciprocated by a link 81 and a lever 82 turning freely on a fulcrum 83 and coupled by a latch 91 to a lever 86, 87 connected by a link 88 to a lever on the rocking shaft 19. The lever 82 is stressed by a spring 95 by which, on release of the latch, the head 40 and trimming blade 38 are raised out of operative position. The release of the latch is effected by a finger 103 carried by a sleeve surrounding the shaft 19 and moved by a treadle-actuated lever 96. Presser-feet; work guides.The edging material is guided by passage through a recess 42 on the member 41 and thence beneath an arm 47 extending from the presser-foot. Edge guides 48 and 51 carried by plates adjustable on the presserfoot are provided to engage the opposite sides of the edging.
Patent GB-780986-A (GB)
Title: Improvements relating to the removal of dust particles from gases
Inventor: KING ARTHUR JOHN
IPC: F23J1/00
Filed: 1954-10-11
Abstract: 780,986. Centrifugal separators. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 21, 1955 [Oct. 11, 1954], No. 29262/54. Class 23 [Also in Group XXVIII] A centrifugal separator serving to urge dust particles coagulated by standing waves (see Group XXVIII) against the wetted vertical wall of a depositing chamber 7 having a lower dust-laden gas inlet 2 and an upper outlet leading to a cyclone separator 13 comprises spaced superposed vanes 8 mounted on a common rotating spindle 9 driven by a shaft 11 through gearing 10.
Patent GB-799334-A (GB)
Title: Highly polymeric polymethylene terephthalates
Inventor: FLETCHER NORMAN
IPC: C08K3/04
Filed: 1955-10-14
Abstract: In order to prevent polymethylene terephthalates pigmented with carbon black from exhibiting a brown cast, there is incorporated in the polyester at some stage of its manufacture at least 0.05 per cent of antimony in the form of an antimony compound soluble in the polyester forming reaction mixture or in the polyester when in the molten state.  A further improvement in blackness is obtained by incorporating a blue pigment, e.g. a phthalocyanine such as "Monastrol Fast Blue LBS" (Registered Trade Mark).  In examples, carbon black with or without copper phthalocyanine is dispersed in ethylene glycol and the pigmented glycol reacted with dimethyl terephthalate in presence of calcium acetate and antimony oxide to form polyethylene terephthalate. Specifications 504,714, [Group IV], 610,137 and 740,381 are referred to and the subject-matter of Specification 766,849 is disclaimed.
Patent GB-483634-A (GB)
Title: Improvements in wooden airscrews
IPC: B27M3/10
Filed: 1936-10-13
Abstract: 483,634. Screw propellers. HEINE, H., (trading as HEINE MOBELFABRIK PROPELLERWERKE, H.). Oct. 13, 1936, No. 29509 /37. Convention date, July 17, 1936. Divided application. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 23, 1937.] [Class 114] Wooden airscrew blades are built up of laminµ which are glued together, some or all of which are made of rods glued side by side lengthwise of the blade, the rods being obtained by longitudinally cutting plain lamina the year rings of which are approximately at rightangles to the cut surfaces. Plain laminµ 1, 2, 3, 4 cut across the year rings a, b, c are cut longitudinally into rods 8 .. 12 which are preferably turned through 90‹ before re-assembly into lamina. The laminµ 5, 6, 7 would not be used. Specification 476,270 is referred to.
Patent GB-1527267-A (GB)
Title: Method and apparatus for sealing off a pipe
IPC: F16L41/16
Filed: 1977-07-15
Abstract: 1527267 Pipe sealing BRITISH GAS CORP 15 July 1977 [15 July 1976] 29549/76 Heading F2P A method of sealing off a service pipe 13 from a gas main 14 comprises the steps of attaching a first sealing means 1 to the service pipe 13 in a fluid tight manner, the sealing means having a hollow body 4, a valve 5 and a second sealing means 6 at the end of the hollow body 4 remote from the first sealing means, placing a cutter 7 through the second sealing means and through the valve aperture and cutting a hole 15 in the service pipe, withdrawing the cutter through the valve and closing the valve whilst the cutter remains in contact with the second sealing means, removing the cutter completely and replacing it with a plugging means, such as a porous sac 10, a stiffener 11 and a tube 12, which is passed through until it reaches the main pipe 14 and injecting a sealant 17 into or above the plugging means, allowing time for it to cure and cutting through the service pipe and plug along the line AA and capping the plug.
Patent GB-521288-A (GB)
Title: Improvements in heat exchange apparatus
IPC: F28F3/08
Filed: 1938-10-12
Abstract: 521,288. Plate heat-exchanger. ASTLE, W. Oct. 12, 1938, No. 29574. [Class 64 (iii)] The rectangular plates 1, 2, 3 with interposed sealing means 5 enclose two interplate flow spaces one on each side of the middle plate 2 which has a pair of transfer ports 11, 12 at a bottom corner in communication solely with the space on one side of the plate, and a pair of transfer ports 7, 8 at the other bottom corner in communication solely with the space on the other side of the plate. The plates 1, 3 are similar to the middle plate but each has at one of its corners only a single transfer port 12, 8 respectively. A fluid supplied through an inlet in line with the port 7 of plate 1 divides into two streams, of which one flows around a partition 13 in the space at the. front of the plate to port 8, then through the ports 8 in plates 2, 3 to an interplate space within a gasket in a plate 4 and forming the inlet of the next plate group. The other stream flows through the ports 7 in plates 1, 2 around a partition 13 in' the space between plates 2 and 3, through port 8 in plate 3 to join the first stream at the inlet to the next plate group. Similarly, another fluid entering through the port 11 in plate 4 flows in a reverse direction between the plates. The upper halves of the plates are symmetrical with the lower halves.
Patent GB-413537-A (GB)
Title: Process for purifying and regenerating used lubricating oil
IPC: C10M175/00
Filed: 1933-10-25
Abstract: Used lubricating-oils are reconditioned by agitating the oil, previously freed from water, with anhydrous aluminium chloride and heating at 130 to 350 DEG  C., whereby tarry and asphaltic bodies are precipitated and volatile oils are removed in one stage.  The oil is then filtered with or without previous admixture with an adsorbent such as Fuller's earth or charcoal.  The process may be applied to lubricating-oils from internal-combustion engines containing vegetable and other fatty oils.
Patent GB-521147-A (GB)
Title: Improvements in or relating to two-stroke internal combustion engines operating withcompression ignition
IPC: F02B75/02
Filed: 1938-10-13
Abstract: 521,147. Oil engines. RICARDO, H. R. Oct. 13, 1938, No. 29647. [Class 7 (iii)] A two-stroke compression-ignition engine is provided in the cylinder head with a combustion chamber B<1> having a depth of from one-third to one-half of its maximum diameter, an exhaust valve D<1> opposite a circular mouth leading to the cylinder and formed with an inwardly-directed lip E, and a fuel injector (not shown) mounted at the side of the combustion chamber with its axis tangentially arranged. The lip E may be formed on an insert E<1>. The piston face may be flat as shown, or of spherical or truncated conical form and may have a projection entering the mouth of the combustion chamber. The fuel jet preferably enters the combustion chamber in the same direction as the rotating air charge admitted through tangential piston-controlled ports.
Patent GB-705667-A (GB)
Title: Process for the production of precision copy-bodies
IPC: B23P15/24
Filed: 1950-12-04
Abstract: Precision copies, positive or negative, e.g. moulds or masters for making moulds in copying milling machines, are made by spraying on to a precision master a tightly-adhering coating of warm metal and applying to such coating a layer of non-shrinking, preferably quick-setting concrete or cement in a pore-free condition.  The original body may be used in this manner as a master.  Alternatively, the master may be produced from a hand-made original by spraying this with an easily-melting metal and strengthening the metal with non-shrinking material such as gypsum or quick-setting cement.  From this master the copy is made by spraying on it, using the Schoop process, a warm steel coating after application of a very thin preliminary coating of an easily-melting metal, e.g. type-metal or tin.  The top layer is finished with a rough steel coating and quick-setting alumina cement applied, pores being eliminated by vibrating the concrete. Reinforcement and tubes for heating and cooling can be embedded in the cement which may afterwards be completely surrounded by a steel casing.
Patent GB-248831-A (GB)
Title: Improvements in or relating to water heaters
IPC: F24H9/20
Filed: 1924-12-10
Abstract: 248,831. Douglas, A. M. Dec. 10, 1924. Internally - fired boilers.-A bell-shaped water chamber B is mounted within a preferably white enamelled casing A and a displacer C in the form of a drum is secured to a plate D<1> forming the top of the burner D. The water and gas valves have inter-engaging handles H, I. The handle H must be turned before the handle I can be moved and before the gas valve can be opened fully a pivoted stop J must be swung on one side since normally the stop prevents the handle I of the gas valve from being moved more than is sufficient to admit gas to the pilot burner D'. If a screw down water valve is used holes k on a plate K enable the position of the handle H to be suitably adjusted. The gas and water pipes may be provided with screw control-valves D<5> to determine the amount passing when the inter-connected valves are fully open.
Patent GB-750188-A (GB)
Title: Improvements in or relating to support means for a floor or roof falsework girder orbeam
IPC: E04G17/16
Filed: 1953-10-28
Abstract: 750,188. Casting floors or roofs in situ. HEILWAGEN, K., [trading as HEILWAGEN, K., [Firm of]]. Oct. 28, 1953 [Oct. 28, 1952], No. 29758/53. Class 20(2). A girder or beam of flooring or roof falsework for casting concrete in situ, is supported at its end in a vertically adjustable manner by a wedge extending between aligned apertures 42, Fig. 1, in a pair of brackets 17 located on the wall on opposite sides of the beam. In a modification the supporting wedge 47 extends between aligned apertures 46, Fig. 3, in angle members 58 which are disposed on opposite sides of the beam and are secured to a wall engaging bracket 17 by bolts 56 passing through a slot in the bracket 17, permitting sideways adjustment of the angle members 58 with respect to the beam.
Patent GB-281089-A (GB)
Title: Improvements in dynamo electric machines
IPC: H02K9/06
Filed: 1926-11-25
Abstract: 281,089. Electro Dynamic Construction Co., Ltd., and Pensabene, N. Nov. 25, 1926. Dynamos and motors, cooling. -- A totally enclosed dynamo - electric machine has salient split poles, a supporting frame not forming part of the magnetic circuit, and cooling pipes which pass through the machine. The frame x has ribs v which support the magnetic sections s and longitudinal cooling tubes t are disposed in the spaces between the frame and the field structure. The internal hot air is circulated over the tubes which may be enclosed in a case by a fan f<1>. Inspection doors D may be provided. Specification 189,862 is referred to.
Patent GB-817026-A (GB)
Title: Improvements in ship's rudder mountings
IPC: B63B3/14
Filed: 1957-09-23
Abstract: 817,026. Rudder mountings. GOTAVERKEN A.B. Sept. 23,1957 [Oct. 5, 1956], No. 29889/57. Class 114. In a rudder mounting in which the end portions of a U-shaped propeller-post 1 are connected together by a detachable shaft 2 secured thereto and acting as a pivot for the rudder 3, the upper end of the rudder-shaft extends to a transversely arranged place of attachment 9 on the upper branch of the propeller-post and is formed with two vertical flanges 10 arranged symmetrically with respect to the axis of the shaft one on each side thereof which flanges are secured (by bolts 11) to the upper portion of the propeller post. The post 1 is provided at said place of attachment with a groove-shaped recess 12.
Patent GB-201470-A (GB)
Title: Electric alarm clock
IPC: G04C21/20
Filed: 1922-11-01
Abstract: 201,470. Rausch, W. Nov. 1, 1922. Time alarms.-In an electric alarm clock the circuit of an audible or visible alarm is adapted to be completed in series through an hour - hand contact which is closed for a considerable period and a minute-hand contact closed for a few seconds or longer at intervals during a few minutes. The hourhand contact comprises a brush 23, Fig. 2, mounted on a spnng 24 carried by a counterweighted star-shaped plate 25, the brush being adapted to make contact with a plug 10 inserted as desired in a conducting ring 8. The minute-hand contact comprises a wheel 27 having groups of teeth 28 adapted to engage a spring 32, the tip of which is flanked by insulation 33. This spring is mounted on a stud 31 whose position can be adjusted along a curved slot 30, having its centre at 33, so as to vary the duration of the contact between each tooth 28 and the uninsulated tip of the spring 32. The two contacts are connected in series with a battery and alarm bell or the like, a succession of alarms being given as successive teeth 28 engage the spring 32.
Patent GB-403510-A (GB)
Title: Machine for stripping the waste sliver from condenser or like bobbins used in the textile trade
IPC: B65H73/00
Filed: 1932-10-26
Abstract: 403,510. Stripping waste sliver from condenser bobbins. TATHAM, Ltd., W., Belfield Works, and THORNTON, H., 911, Oldham Road, both in Rochdale. Oct. 26, 1932, No. 29911. [Class 120 (iii).] Waste sliver is stripped from condenser bobbins B by a rotating stripping roller b provided with a number of radial strips c of leather, rubber or like resilient material, which acts in co-operation with a fixed or adjustable guide plate f adapted to receive the bobbin and provided with a sharp edge or blade f<2> which loosens the sliver on the bobbin when the latter is slowly rotated. The stripping roller b is mounted in bearings a<1>, while the radial strips c are secured between metal strips c' and stout backing laths c<1>. Adjustable abutment plates g having flanges g<1> are secured to plates d<2> attached to the inside of brackets d the inturned top flanges of which serve to support the longitudinal guide plates e, f which are adjustable towards or away from each other by slots e<1>, f<1>. In operation the bobbin B is placed on the plate f with its spindle B<1> abutting against the flanges g<1> and is slowly rotated, the edge f loosening the sliver which is then stripped off by the rapidly rotating strips c. If desired the strips c may be arranged in spirals. The back guide plate e directs the stripped material downwards and a curved guide plate may be provided additionally. The machine may be enclosed to localise the stripped material which may be collected in a container or pneumatically by means of cages.
Patent GB-1458887-A (GB)
Title: Process for the production of methacrylic acid
IPC: C07C67/00
Filed: 1974-07-05
Abstract: 1458887 Methacrylic acid JAPAN SYNTHETIC RUBBER CO Ltd 5 July 1974 [5 July 1973] 29978/74 Heading C2C [Also in Division B1] Methacrylic acid is made by the vapour oxidation of methacrolein in the presence of a catalyst comprising oxides of Ni, Mo, W and V. The catalysts may also contain oxides of alkali metals, Zn, In, Tl, Ti, Zr, Nb, Ta, Cr, Fe and/or Co, and may be supported. The oxidation may be effected at 250-500‹ C. and atmospheric pressure in the presence of steam using air as the oxidant.
Patent GB-1279622-A (GB)
Title: Gas cushion device
Inventor: HART WILLIAM BARRIE
IPC: B60V3/04
Filed: 1968-06-24
Abstract: 1279622 Gas-cushion load supporting device; railway systems TRACKED HOVERCRAFT Ltd 24 Sept 1969 [24 June 1968] 29982/68 Headings B7K and B7L A gas-cushion device for supporting a load, particularly a track-guided vehicle, comprises an upper rigid structure, which may form part of the vehicle, and a lower member movable relative to the upper structure, these two together defining a deformable chamber connected by a passage to the gas-cushion area, means being provided for forming a gas curtain, fed from a source other than the said chamber, to produce and maintain the gas cushion.  In Fig. 3, a member 8 comprises a base 11 with inclined walls 12 and 15 which define nozzles 16, the walls 12 and 15 being connected to upper structure 9 by flexible membranes 10 and 20 respectively. Pressurized air is supplied via duets 24 to the nozzles 16. An opening 25 in the base 11 leads to an inner deformable chamber 14. Gas cushion 21 forms a first suspension stage and will accommodate minor irregularities in the track, while the chamber 14 provides a second suspension stage and will permit a much greater movement of the member 8 relative to the vehicle. In Fig. 4 converging walls 42 and 43 attached to upper structure 31 form nozzles 41 which fit into further nozzles formed by walls 39 and 40 attached to member 30, which is connected to the structure 31 by flexible membrane 32 extending around the device. When pressurized gas is fed to the nozzles 41, ambient air is entrained and emitted through the nozzles 38. A passage connects the cushion area with a chamber 37 which constitutes a second suspension stage. In Fig. 5, flexible membrane 52 connecting member 56 to upper structure 53 is in the form of a continuous sheet extending from one side of the vehicle to the other. Nozzles 54 receive pressurized gas through flexible extensible ducts 55 which permit movement of the member 56 with respect to the vehicle. A further embodiment (Fig. 7, not shown) is described more fully in Specification 1,274,642.
Patent GB-907654-A (GB)
Title: Electrostatically energized capacitor of periodically varying capacitance
Inventor: MONSER HANS-JOACHIM
Filed: 1960-08-31
Abstract: 907,654. Variable capacitors. VAKUTRONIK VEB. Aug. 31, 1960, No. 30018/60. Class 37. A cyclically variable capacitor for modulating an applied direct voltage to be measured at high impedance comprises (Fig. 5) a diaphragm 19 clamped between rings 7, 8 by peripheral countersunk screws 6 and stretched by being forced by a peripheral ridge on one ring into a corresponding groove on the other and has an electrical connection 9. A spaced excitation electrode between which and the diaphragm an alternating voltage may be applied to maintain oscillation is supported on an insulating disc 11 of polytrifluoroethylene or polytetrafluoroethylene retained between ring 8 and base 10 screwed together by a screw-threaded pin and has an electrical connection 14a, while the diaphragm and an electrode 16 constitute the cyclically variable capacitor; the latter electrode being mounted on an insulating block 4 of the above material by a threaded pin 18 having an electrode connection 16a and engaging a locating cylinder 17. The block 4 and an electrostatic screen 5 are retained by cap 3 screwed on to ring 7. Diaphragm 16 may be slotted radially to reduce air damping, and a drying medium may be introduced into the capacitor cavity which may alternatively be filled with a neutral gas or exhausted.
Patent GB-1094047-A (GB)
Title: A method of hot extrusion of metallic articles
IPC: B21C23/32
Filed: 1965-07-15
Abstract: For extrusion of a billet 4 between a die 6 and mandrel 2, by means of a ram 1 and a dummy block 3, a composite disc of lubricant is provided, the layers A and B of the disc being of different glass compositions.  The layer A has a lower viscosity than layer B and is effective during the initial stages of extrusion, layer <PICT:1094047/C1/1> B being effective as the temperature of extrusion rises.  The layers are conveniently produced from different glasses in compressed powder form, but one layer may be formed of a mixture of glass powder and graphite or MoS2.  A suitable composition for layer a is 82 mol. per cent B2O3, 3.5% Na2O, 7.5% SiO2, 5.0% Al2O3, and 2.0% CaO, the viscosity being 280 poises at 850 DEG  and 2300 poises at 700 DEG  C.  The B layer may comprise 45 mol. per cent SiO2, 6.5% CaO, 4.5% MgO, 19% B2O3 and 25% K2O3 with a viscosity of 8000 to 30,000 poises at 800 DEG  C.  More than two layers of lubricant may be employed, an intermediate layer of gradually changing composition, for example, being interposed between the A and B layers.  Water glass or epoxy resin may be used to stick the layers together.
Patent GB-370873-A (GB)
Title: Improvements in or relating to incandescent lamps
IPC: F21V25/02
Filed: 1930-10-08
Abstract: 370,873. Automatic cut-outs for electric lamps. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Oct. 8, 1930, No. 30142. Convention date, Dec. 18, 1929. Void [Published under Sect. 91 of the Acts]. [Classes 39 (ii) and 75 (iv).] In an incandescent electric lamp protected against firedamp by means of a switch which automatically cuts off the current when the lamp is damaged, the bulb, or a glass shade surrounding it, is movably mounted and any movement resulting from an external force is utilized for operating the switch. In the form shown a switch 2 is arranged within a metal body 1 which is closed by a plate 3 carrying an outer glass shade 4 and a removable member 5 which carries a part 6 of a ball-and-socket joint, the other part 7, 8 being formed integrally with a plate 9 which carries an inner glass shade 12 and the holder 10 of the bulb 11. The switch carries a spring-pressed bridge 13 passing through a cover 16 on the member 5, a spring is arranged between the cover 16 and an abutment 17, and between the latter and a second abutment 15 on the ball-and-socket joint is arranged a breakable rod 18. The switch 2 may cut off the current directly or it may short-circuit the current and cause the melting of a suitably located fuse, and the operation of the switch may be controlled by means of a catch which is adapted to be withdrawn by the movement of the bulb or of the glass shade. The outer shade, or both shades, may be movably mounted, and the bulb may be immovable.
Patent GB-674016-A (GB)
Title: Improvements relating to bed-conveniences
Inventor: ERNSTING DONALD
IPC: A61G7/05
Filed: 1949-11-25
Abstract: 674,016. Bedsteads with sanitary conveniences. ERNSTING, D. Sept. 28, 1950. [Nov. 25, 1949] No. 30222/49. Class 52 (ii). A holder for a urine bottle or other convenience for use by a bed patient comprises a clamp A adapted to be secured to a bed post, a swingable arm pivoted thereto having at its remote end the holder M for the urine bottle O &c. The swingable arm is preferably constructed with two mutually pivoted arms F, L and the holder M may be provided with a handle N which may be arranged to engage the bed irons to limit its position below the bed.