baber/WOPTO huggingface dataset:
Patent GB-451047-A (GB)
Title: Method and apparatus for vaporizing sulphur, naphthalene and other solid fumigants
IPC: A01M1/20
Filed: 1935-02-18
Abstract: 451,047. Vaporizing sulphur and other solid fumigants. GUBA, E. F., 68, Waverley Oaks Road, Waltham, Massachusetts, U.S.A. Feb. 18, 1935, No. 5233. Convention date, Feb. 19, 1934. [Class 81 (i)] Apparatus for producing and distributing vapours of sulphur, naphthalene or other solid insecticides or fungicides comprises a closed container for the fumigant, a furnace for heating the same, an internalcombustion engine delivering exhaust gases below the surface of the molten fumigant and a discharge conduit for the exhaust gases and vapour of the fumigant. The furnace gases are not admixed with the vapour. Exhaust gases from the internalcombustion engine X pass by way of a pipe C, conditioning chamber E and pipe B to the lower part of a vessel K containing sulphur or other fumigant and mounted over a furnace so as to be heated by the surrounding combustion gases. Part of the engine exhaust leaving the chamber E may be byepassed to the atmosphere through the valve F, the remainder bubbles through the molten sulphur A and is discharged, together with sulphur vapour, through a flexible tube H into a greenhouse or on to plants in the open. The Specification as open to inspection under Sect. 91 refers to the use of compressed inert gas from portable cylinders in place of internal-combustion engine exhaust gases, and to the use of more than one sulphur containing vessel. This subject-matter does not appear in the Specification as accepted.
Patent GB-276571-A (GB)
Title: Manufacture of aromatic tetrahydronaphthylamines or derivatives thereof
Filed: 1927-02-24
Abstract: 276,571. Imray, O. Y., (Soc. of Chemical Industry in Basle). Feb. 24, 1927. Ar-Tetrahydronaphthylamine derivatives are obtained by subjecting N-substituted naphthylamines to catalytic hydrogenation; the hydrogenated naphthylamines themselves may be obtained by using an acetyl derivative as the starting material and subsequently saponifying. In examples, (1) ar-N-ethyltetrahydro-a-naphthylamine is obtained bv dissolving N-ethyl-a-naphthylamine in alcohol and treating the solution with hydrogen under pressure in the presence of a nickel catalyst; in the same way ar-N-ethyltetrahydro-#-naphthylamine is obtained from N-.ethyl- #-naphthylamine, and a-acetaminotetrahydronaphthalene from acetyl-a-naphthylamine; the acetyl group may be subsequently eliminated by sulphuric acid: (2) ar-acetyltetrahydro-#-naphthalide is obtained by dissolving acatyl-#-naphthylamine in tetrahydronaphthalene and treating with hydrogen as before; the acetyl group may be eliminated with sulphuric acid. giving tetrahydro-#- naphthylamine ; (3) ar-N-phenyltetrahydro-a-naphthylamine is obtained by hydrogenation of N- phenyl-a-naphthylamine in alcohol and distillation in vacuo in the same way acetylated artetrahydro-N-ethyl-a-naphthylamine is obtained from acetylated N-ethyl-a-naphthylamine; the acetyl group may be eliminated with sulphuric acid.
Patent GB-122744-A (GB)
Title: An Improved Plough.
Inventor: DAVIES JAMES
IPC: A01B3/08
Filed: 1918-03-26
Abstract: 122,744. Davies, J. March 26, 1918. Hand-tools for ploughing. A plough adapted to be operated by one or two persons comprises a main backbone provided with handles and means for supporting a balance weight and a drill marker, and detachably and reversibly connected to a double-breasted plough body provided with adjustable wings. The backbone 1 is forked at one end and provided with handles 3 by which it may be drawn by a person walking backwards. At the other end is a hook 4 to receive a balance weight 5, or for the attachment of traces when the plough is reversed. The plough body consists of a projecting sole plate 6 and two breasts 8 formed of an angled metal sheet set under at 9, towards the rear and provided with hinged wings 10, which are adjustable by means of slotted links and a clamping-nut. The plough body is connected to the backbone 1 by two vertical threaded rods 12, 13 and wing-nuts 14. A reversible drill marker 19 is adjustably connected to a graduated rod 20 hinged on the backbone 1 and connected to one or other of the handles 3 by a link 22.
Patent GB-924868-A (GB)
Title: Improvements in or relating to building structures
IPC: E04C2/08
Filed: 1960-02-15
Abstract: 924,868. Domed building structures; lattice building frameworks. KAISER ALUMINUM & CHEMICAL CORPORATION. Feb. 15, 1960 [Feb. 20, 1959], No. 5342/60. Addition to 836,466. Classes 20 (2) and 20 (4). A shell-like building structure such as a geodesic dome, comprising a plurality of structural units 7, Fig. 4, of the kind described and claimed in the parent Specification, is reinforced by a framework interconnected with the shell structure, which framework includes a plurality of frame elements 2, 3, the elements 2 being arranged in the form of regular polygons which are disposed in spaced relation to the polygons formed by the strut members 12 of the structural units 7. The frame elements 3 extend from the corners of the polygons defined by the elements 2 and converge in groups to the common vertices of the sets of units 7, the struts 12 of which define regular polygons. The framework may be provided either externally or internally of the shell structure. Sixway tubular connectors 4 are provided at the junctions of the members 2 and 3. At the junctions of the elements 3 where they are secured to the units 7, the ends of the elements 3 are bolted to rosette-like connectors 30 which are of similar configuration to rosette-like connectors 20 (see the parent Specification) which connect common vertices of the units 7. Bolts 32 pass through aligned central holes in opposed pairs of connectors 20, 30. In an arrangement having the reinforcing framework internally of the shell, the elements 2 are replaced by ladderlike elements 62, Fig. 9, which form walkways. The elements 62, and the elements 63 replace the elements 3, are welded at their converging ends to shaped connectors 65, 78, which are welded together. The other ends of the elements 63 are welded to shaped connectors 82, Fig. 11, which are bolted to opposed rosette-like connectors 20 serving to secure the units 7 at their common vertices.
Patent GB-167794-A (GB)
Title: Improvements in carriages for self acting mules and self acting twiners
IPC: D01H3/04
Filed: 1920-02-23
Abstract: 167,794. Platt Bros. & Co., Ltd., and Hall, H. P. Feb. 23, 1920. Mules and twiners.-A carriage for a mule is provided with means for mounting the carriage bearers s, Fig. 2, comprising channel-bars n applied flanges upwards to the bottom of the carriage and secured by ears o riveted or bolted to angle-bars q running along the front and rear of the carriage. Screw bolts p on which the bearer s is adjustably mounted are passed through key-hole slots in the bars n and secured in position or are spot welded on to the bars. The angle-bars q have holes equally spaced throughout their length to facilitate the fixing of the bars n in any convenient position. The tin-roller bearing brackets are mounted on a mule or a twiner carriage by means comprising a channel bar t, Fig. 3, applied flanges downwards on the top of the carriage and secured in position by ears u riveted or bolted to the front and rear plates of the carriage. The channel bar is provided with holes through which the bolts v to secure the bracket y are passed and with a block w carrying a screw x to adjust the bracket y. The devices are shown applied to a metal carriage of the kind described in Specification 167,797 and provided with a rest k for the spindle rail or box m as described in Specification 167,795. The sections of the carriage are coupled together by means comprising corresponding angle bars g at the edges of the bottorns of the sections and brackets h, i on the fronts and rears of the sections. The bars and brackets on adjacent sections are bolted together and a plate j extending across the carriage may be bolted between them.
Patent GB-556939-A (GB)
Title: Improved method of and apparatus for removing dust or other foreign particles from gas or air
IPC: B03C3/16
Filed: 1942-04-22
Abstract: 556,939. Electrostatic precipitation apparatus. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. April 22, 1942, No. 5383. Convention date, May 13, 1941. [Class 39 (i)] [Also in Group XII] In the removal of particles suspended in gases, the gases are passed first through an electrostatic field which ionizes them and charges the particles and then through a spray of liquid particles oppositely charged to which the suspended particles adhere. The liquid may be water, and may be treated with any desired wetting agent ; it may also function to humidify the gas or otherwise condition it. One form of apparatus is shown in Fig. 1, in which the gas to be cleaned passes through a conduit 2. On the upstream side an ionizing field is established between a thin wire electrode 10, which has preferably a high positive potential, and electrodes 12 of large dimensions which are earthed through the conduit. A spray is produced by an earthed nozzle 15, and is charged negatively in the field between the nozzle and a positively charged ring electrode 20. Baffles 30, and a sharp bend 6 in the conduit separate the liquid particles which are collected in a trap 36. The field behind the electrode 20 may be modified to diminish space charge effects by a series of parallel plates disposed across the line of flow of the gas and preferably connected to the conduit. The apparatus may be duplicated and operate in cascade, the liquid particles carried by the gas stream from one stage being precipitated in an elecrostatic field before the gas passes through the next stage as in Fig. 5 (not shown). If desired, the liquid may be circulated through the spraying device by a pump and filter; and, where the spray is formed by a stream of air, this may be taken from the cleaned gas. In modifications, the spraying means consist of a number of nozzles fed by a header extending transversely across the gas conduit, each coacting with a ring shaped electrode, and the latter may consist of pairs of concentric rings juxtaposed and electrically connected. The spraying means may be duplicated in the direction of the gas flow. The electrode in the ionizing zone may be disposed axially of the conduit instead of transversely, and the apparatus may be arranged for the treatment of downwardly flowing gas, Figs. 6 and 7 (not shown).
Patent GB-765270-A (GB)
Title: Gas turbine plants
IPC: F02C3/22
Filed: 1955-02-23
Abstract: 765,270. Gas turbine plant; axial-flow compressors. SULZER FRERES SOC. ANON. Feb. 23, 1955 [March 6, 1954], No. 5494/55. Classes 110 (1) and 110 (3). In a gas turbine plant using a gaseous fuel of low calorific value, a fuel of higher calorific value and additional air are supplied to the combustion chamber when there is a deficiency in the supply of fuel gas of low calorific value. The additional air and fuel supply are adjusted so that the temperature and pressure at the turbine inlet remain constant. In the plant shown, the turbine 5 drives the air compressor 1 and the fuel gas compressor 4. The compressed air passes through a preheater 2, coupled to the turbine exhaust, before entering the combustion chamber 3. Fuel of higher calorific value may be supplied through a pipe 12 and valve 11 and the air compressor, Fig. 2, is provided with variable guide blades 16 operable by a lever 17 so that the volume of air supplied may be varied. A return pipe 8 around the compressor 4 is fitted with a valve 9 and cooler 10. This may be brought into operation to prevent surging when the fuel gas supply is deficient. The compressor 4 may also be fitted with adjustable blades. The plant may consist of several turbine sets, the fuel gas and air compressors for all the sets being driven by a particular turbine. The combustion air compressor may consist of a number of units, only one of which is adjustable.
Patent GB-798535-A (GB)
Title: Improvements in or relating to heat exchangers of the plate-pile type
Inventor: JENSSEN SVERRE KNUT
IPC: F28F3/08
Filed: 1957-02-19
Abstract: 798,535. Heat exchangers. AKTIEBOLAGET ROSENBLADS PATENTER. Feb. 19, 1957, No. 5517/57. Class 64(3) A heat exchanger comprises a stack of plates 1 spaced apart by deformations formed in the heat exchange surfaces of the portions 3 to 6 of the plates, adjacent plates being welded together along the free edges of the upturned edge portions. Preferably all the plates in the stack are similar, alternate plates being turned through 90 or 180 degrees in the plane of the plate. The deformations may comprise arrow-like corrugations 11 (Figs. 1, 2 and 5), diagonal corrugations, cap-shaped protrusions or longitudinal ridges. Figs. 1, 2 and 5 show one form of apparatus in which parts of the upturned edge portions are of reduced height to provide inlet and outlet ports e.g. 12, 14 (Fig. 5) to and from the fluid spaces between adjacent plates these ports being connected to suitable headers e.g. 16, 18 for each fluid. Figs. 11, 12 and 15 show an alternate form in which the inlet and outlet ports 12a, 13a 14a, 15a to and from the fluid spaces are provided in the main portions of the plates 1b instead of in the edge portions thereof, conduits e.g. 20, 22 to and from the stack of plates being located in an end wall 24b forming part of a framework embracing the stack of plates.
Patent GB-484747-A (GB)
Title: Improvements in or connected with electric tumbler switches
IPC: H01H27/06
Filed: 1937-02-24
Abstract: 484,747. Tumbler switches. GENERAL ACCESSORIES CO.. Ltd., and JOHNSON, P. A. Feb. 24, 1937, No. 5547. [Class 38 (v)] A flush-mounting tumbler switch which is operated by a removable key 23, is provided with an adapter securable to the ordinary cover plate 8 comprising a disc 1 with a slot 2 just wide enough to allow of insertion of a key 23. The switch movement mounted on a base 10 and enclosed in a case 7, comprises a U-shaped pivoted lever 13 carrying contacts 14, and an operating lever 17 pivoted at 16 connected by a spring 18 in tension to give a snap action. Fig. 5 shows the key 23 which is passed through the slot 2 in the adapter 1 so that its recess 23a engages the operating lever 17. The adapter 1, made of any insulating or conducting material, has a projecting panel 6 extending across it in which are countersunk holes 3, wherein screws 21 which also locate the coverplate 8 are engaged by nuts 22.
Patent GB-1327159-A (GB)
Title: Manufacture of tetrafluoroethylene polymer powder
IPC: C08J3/16
Filed: 1972-02-07
Abstract: 1327159 Polytetrafluoroethylene powders PENNWALT CORP 7 Feb 1972 [23 Feb 1971] 5603/72 Heading C3P A tetrafluoroethylene polymer powder suitable for paste-extrusion is obtained from an aqueous tetrafluoroethylene polymer latex by freeze-drying. The freeze-drying process may be applied to the whole latex or the latex may be coagulated, for example by freezing or by low shear agitation, and the wet coagula may be freeze-dried. The resulting powder may then. be mixed with a petroleum derived hydrocarbon lubricant and extruded.
Patent GB-589591-A (GB)
Title: Improvements in or relating to braking apparatus for winder and the like systems
IPC: B66D5/26
Filed: 1941-04-30
Abstract: 589,591. Fluid-pressure brakes; indicators for brakes. GENERAL ELECTRIC CO., Ltd., and MAER, C. A. April 30, 1941, No. 5605. [Class 103 (i)] [Also in Group XXXVII] Operation of means for detecting whether or not a brake for winder and like systems, that is released by fluid under pressure has been effectively applied, is dependent upon cessation of movement of the release piston. These means may be arranged to maintain the motor field excitation of a Ward-Leonard electric winder system if the brake is not effectively applied. Compressed air is supplied by a valve 6 to a cylinder 1 to raise the piston 4 and weight 8 to release the brake. A cataract cylinder 2 regulates the rate of application of the brake. Pressure switches 12, 13 arranged in parallel in a circuit controlling the motor field excitation of a Ward- Leonard system provided with graduated regenerative emergency braking are connected respectively to the cylinders 1, 2, the connection to the switch 12 comprising a non-return valve 18 and restricted passage 19. The switches are normally closed and open respectively as shown. When the pressure air is released from the cylinder 1 the pressure established in the cylinder 2 due to downward movement of the piston 5 closes the switch 13, and the switch 12 opens but due to the restricted passage 19, only after a delay sufficient to permit the closing of the switch 13. When the piston rod 3 and the pistons have come to rest after the completion of the brake application movement, the pressure in the cataract cylinder 2 disappears, the switch 13 reopens and the motor field is thus deenergised, and the generator field caused to suicide. If upon operation of the brake the pressure in cylinder 1 fails to collapse, the switch 12 remains closed and the field circuit is maintained. Instead of controlling the motor, the circuit may include a visual or audible indicator.
Patent GB-567884-A (GB)
Title: Improvements in and relating to condensation pumps
IPC: F04F9/00
Filed: 1943-04-08
Abstract: 567,884. High-vacuum jet pumps. BRITISH THOMSON-HOUSTON CO., Ltd. April 8, 1943, No. 5626. Convention date, April 8, 1942. [Class 71] A high-vacuum condensation pump is operated. by the vapour of an alloy of some of the metals bismuth, lead, cadmium and zinc, having a vapour pressure less than that of mercury at atmospheric temperature, the alloy forming part of an electric heating circuit. Fig. 1 shows a pump in which the vaporizing chamber 11 is formed in a block 67 of aluminium oxide &c. cut away at the upper part to form a neck 75 forming the inner wall of the condensa. tion chamber 15, the outer wall being formed by the wall sections 17, 19 bolted together with an intervening seal of soft iron coated with copper. A pumping chamber 21 of glass surmounts section 19 and is connected by pipe 39 with the vessel to be evacuated. The anode is a molybdemun rod 60 coated with aluminium oxide and ending in an exposed tip 61 of tungsten or carbon from which an are is produced for heating, to the molten alloy connected by a pin 89 to the disc 71 forming the base of section 17. The other end of the rod is secured to a block 59 cooled by liquid passing through a sleeve 43 on the block and surrounded by a sleeve 85 of lava secured to the jet cap 81 also of lava. The anode is adjustable by a nut 57 on a gland carrying sleeve 43, which sleeve is sealed by a disc and bellows 45 to a block forming the top of the pumping chamber. The alloy condensed in the chamber 15 is led back to the vaporizing chamber through a conduit 91, an upper extension of which leads to a backing pump. In another form, the vaporizing chamber is of steel jacketed by a sectional heat-insulating sleeve round the upper part of which the condensing chamber extends ; molten alloy flows down round this jacket to a well from which it passes up a tube to the vaporizing chamber ; vaporization is effected by an arc and by the heating due to resistance of the metal in the tube.
Patent GB-696536-A (GB)
Title: Adjustable resistance device
IPC: H01C10/24
Filed: 1952-03-04
Abstract: 696,536. Variable resistance devices. BENDIX AVIATION CORPORATION. March 4, 1952 [March 30, 1951], No. 5672/52. Class 37. [Also in Group XL (c)] In a variable resistance device the point of contact between a contact member and a travelling resistance element is varied automatically by cam means or by using a curved contact member so as to compensate for undesired non-linearity. In the potentiometer shown Figs. 1-2, successive lengths of resistance wire 17 drawn from a threaded drum 16 rotated by control shaft 13 are tensioned by self-adjusting pulleys 23, 24 and moved past and in engagement with a normally midposition contact member 31 which oscillates axially of the drum 16 with pivoting of contact arm 34 at 35, Fig. 1, so as to follow the prevailing tensioned length of resistance wire 17. The shaft 13 also drives through reduction gearing 41/42 and 45/46 a cam ring 52 which rotates a cam roller 54, Fig. 2 and Fig. 4. The cam ring contour adjustable by screws 51 to provide the desired non-linearity compensation lifts or lowers the cam roller 54 and cam-shaft 55 which latter is secured to a rotatable rectangular shaft 56. The latter also carries a pin 58 at right angles to cam-shaft 55, whereby movement of the latter displaces the pin 58 and consequently an abutting pin 59 secured to a shaft 39 which supports the pivot assembly for the contact arm 34, Fig. 2. Therefore rocking of pins 58, 59 rotates the shaft 39 and hence the contact arm 34, spring-controlled at 61, to move the contact member 31 along and in maintained contact with the resistance wire 17 an amount dependent upon the contour of cam ring 52. In a modification, Figs. 5-6, a rigid contact member 79 of predetermined curvature provides the desired non-linearity compensation since with axial movement of the pulleys 74-75 along shafts 76-77 a different point of contact is established between the travelling resistance wire 73 and contact member 79.
Patent GB-250547-A (GB)
Title: Improvements in or relating to welt sewing machines
IPC: D05B15/04
Filed: 1926-03-01
Abstract: 250,547. Reece Shoe Machinery Co., (Assignees of Oliver, J. R.). April 8, 1925, [Convention date]. Boot - sole sewing- machines, welting and turn shoe.-The welt guide has an elongated slot by which the welt is presented tangentially to the sole and is controlled by means resiliently pressing it into contact with the work during part of the stitching cycle, including the work-feeding period, and holding it resistingly against the work during the remainder of the stitching-cycle including the needle retracting period. The machine described comprises a curved hook needle C penetrating the work from the welt side, a channel guide B and a work rest or bumper A locked against the work during the retraction of the needle by a member 18 pressing against its sliding shank a. The welt guide comprises a block 40 having a slot for the welt w closed on one side by a thin wall 43 and provided with gibs 44, 46 adjustable by screws to control the size of the slot. An extension 49 on the block has ratchet teeth 50 for engagement by a locking pawl 68. The guide is mounted on a bar 60 clamped in a slot 54 in the block and pivoted to the frame at 61 parallel to the needle axis. The pawl 68 is operated by the mechanism which effects the locking movement of the lever 18 against the arm a and this comprises a cam 15 on the main shaft 13, bell-crank 22, 27, link 28, crank 29, 30 spring link 72 and bell-crank 70, the lever 18 being connected to the link 28 by a link. The spring link 72 is provided to allow movement of the guide into closer contact with the work without unlocking the pawl 68 from the teeth 50. The guide is resiliently pressed against the work by a link 78 pivoted to the guide at 52 and stressed by a spring 80 bearing against a collar 79 through which the link passes. Means are provided for automatically increasing the pressure of the guide, at the time when the needle is entering the work, comprising an arm 85 on which the collar is mounted having a yoke 86 thereon connected to a sleeve passing to the exterior of the frame and connected bv a lever 89 and link 90 to a cam-actuated lever 91.