baber/WOPTO huggingface dataset:
Patent GB-138405-A (GB)
Title: Improvements in or relating to suction or delivery valves for pumps
IPC: F04B53/10
Filed: 1919-01-16
Abstract: 138,405. Thompson, T. Jan. 16, 1919. Check or non-return valves.-A loose ball suction or delivery valve for pumps, of the kind designed to give a constant area of flow when the valve is open, has the casing divided transversely into two parts a, b, secured together by flanges a<1>, b<1> and bolts c, and is provided internally with guides g to maintain the ball valve f in the axial line. The Figure shows the invention adapted for use as a suction valve, and with the part b formed with a grid-like extension d. The upward movement of the valve is limited by a stop i streamline in form and supported by webs h. The valve is also applicable as a fixed delivery valve or as a reciprocating delivery valve in pumps of the type in which a tubular barrel with valve is reciprocated in suction and delivery pipes.
Patent GB-699969-A (GB)
Title: Improvements in or relating to silencers for exhaust and like gases
IPC: F01N1/10
Filed: 1951-01-17
Abstract: 699,969. Silencers for gaseous currents. KYFFIN, F. H. Jan. 17, 1952 [Jan. 17, 1951], No. 1248/51. Class 7 (ii). A silencer including a tubular casing 20 has an end plate or partition 25 comprising dished parts 38, 39 fitted together peripherally and so shaped that inwardly from the periphery at least one of the parts diverges from the other, each part being. provided with a hole, which may be eccentric to the axis of the silencer, to receive a pipe 27. The parts 38, 39 may be provided with peripheral flanges 40, 41 so that one part fits within the other, and the holes for the pipe 27 may have oppositely-directed flanges 42, 43. There may be an annular space 24 formed between the casing 20 and a perforated tubular member 21, the gases being constrained by a baffle 29 to flow along the space and into the member 21, after which the gases pass through a perforated baffle 30 closing the space 24, and into an expansion chamber 34, and through a perforated pipe 36 surrounded by sound-absorbing material 37 such as glass wool. An expansion chamber 33 is provided between the inlet 27 and the member 21. In modifications, the silencer comprises (a) two members 21 spaced from the end plates 25, 26 of the casing 20 and an intermediate expansion chamber, Fig. 6 (not shown); (b) the arrangement of Fig. 1 having an additional expansion chamber between the outlet of the pipe 36 and the end plate 26, Fig. 9 (not shown); and (c) expansion chambers 33, 34 and a single member 21, Fig. 10 (not shown). Specifications 638,666, 680,376 and 686,905 are referred to.
Patent GB-816622-A (GB)
Title: Improvements in or relating to the production of fluoroform
Inventor: BELF LEON JERZY
IPC: C07C17/20
Filed: 1957-01-14
Abstract: Fluoroform is prepared by reacting gaseous chloroform with gaseous hydrogen fluoride in the presence of a catalyst consisting of active carbon impregnated with iron chloride, the reaction being carried out at a temperature between 200 DEG  and 400 DEG  C.  The catalyst is preferably activated charcoal which has been impregnated with ferric chloride, and contains about 12 per cent of iron.  Fluoroform is separated from the reaction products; and the by-products, viz. fluorodichloromethane and chlorodifluoromethane, are preferably recirculated over the catalyst with fresh chloroform and hydrogen fluoride.  A preferred method of operating is to pass a mixture of hydrogen fluoride with chloroform and recirculated fluorodichloromethane and chlorodifluoromethane over the catalyst at a temperature of about 250 DEG  C., and then to pass the products over catalyst in a second reaction stage at about 350 DEG  C.  The gaseous effluent is washed with water to remove hydrogen chloride and hydrogen fluoride; and the residual gases are dried and condensed. The condensate is fractionally distilled to isolate the fluoroform. The fluorodichloromethane and chlorodifluoromethane are returned to the first reaction stage.  Specification 428,445, [Group IV], is referred to.
Patent GB-1398952-A (GB)
Title: Diffusion of arsenic ito silicon substrates
IPC: H01L21/316
Filed: 1973-01-10
Abstract: 1398952 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 10 Jan 1973 [14 Feb 1972] 1318/73 HeadingHlK The surface concentration of arsenic achieved by diffusing arsenic from an arsenic-doped vitreous layer into a silicon substrate is increased by heating in an oxidizing atmosphere after provision of the layer to form a silica layer from 200-1000  thick between it and the silicon and then heating in an inert atmosphere to diffuse the arsenic. The vitreous layer can be deposited by sputtering, or by pyrolytic decomposition of a mixture of silane and arsine in oxygen, but is preferably formed as described in UK Specification 1,331,820 by painting on a mixture of polysiloxane, and an organic arsenic compound in an organic solvent and then heating in an oxidizing, e.g. ozone atmosphere. Typically the doped vitreous layer is provided on a surface carrying an apertured diffused mask, though it may alternatively be deposited directly on the silicon and confined to selected sites by photoetching thereby eliminating the need for a mask. The inert gas used in the diffusion process is preferably nitrogen or argon.
Patent GB-1013737-A (GB)
Title: Plastics packages with strippable welds
IPC: A61B17/06
Filed: 1963-01-11
Abstract: 1,013,737. Suture packages with strippable welds. ASTRA APOTERKARNES KEMISKA FABRIKER A.B. Jan. 11, 1963, No. 1410/63. Heading B8C. The heat seals welding two layers of plastics foil are stronger in a region 18, 19 than in another region 16, 17 so that the region 16, 17 can be stripped apart while leaving the stronger region intacts in such a way as to retain a suture 22. In the form illustrated the limit to which the seams can be stripped to open the package is set by spot welds 20, 21 which may coincide with the marginal welds. Alternatively, the strength of the seams may be varied by varying the welding time and temperature or the stronger seam may be wider. The package may be formed by folding double a single strip of foil. The package may be filled with liquid to the level of the stronger welds, or may, as shown, contain a suture 22.
Patent GB-781838-A (GB)
Title: Improvements in or relating to colour television picture tubes
IPC: H04N9/31
Filed: 1956-01-16
Abstract: 781,838. Colour television tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 16, 1956 [Jan. 19, 1955], No. 1416/56. Class 39(1). A colour television tube of the kind comprising a screen having parallel strips which luminesce in different colours on excitation, is provided on the observer's side of the screen internally with a second screen which diffuses the light emanating from the luminescent screen substantially only in directions transverse to the longitudinal direction of the strips. As shown diagramatically in the Figure, the second screen 20 may take the form of a plurality of ribs 5, 6, 7 acting as cylindrical elements extending parallel to the strips 2, 3, 4 of the first screen 1, the transverse dimension of the ribs being not greater than that of the strips. The second screen should be spaced by at least twice the focal length of the cylindrical lens, preferably at four times this length, from the first screen. As shown, the lens 5 gives rise to images 11, 8 of strips 3, 2, the lens 6 to images 14, 9, 12 of strips 2, 3, 4 and the lens 7 to images 10, 15 of strips 4, 3, images 16, 17 being also formed of strips (not shown). Strips 2, 3,4 may luminesce for example in red, blue and green respectively. The result is a three times finer line structure.
Patent GB-733659-A (GB)
Title: Improvements in or relating to hydraulically actuated brakes for vehicles
Inventor: DAVIS JOHN WALTER
IPC: B60T8/26
Filed: 1953-01-19
Abstract: 733,659. Hydraulic brakes. GIRLING, Ltd. March 12, 1954 [Jan. 19, 1953], No. 1459/53. Class 103 (1). A valve device for insertion in vehicle hydraulic braking systems, so as to limit the braking pressure on the rear wheels to prevent skidding when during deceleration the weight of the vehicle is transferred to the front wheels, comprises a main valve 17 and a pilot valve 22 which act to cut off communication between connections 11 to the master cylinder and connections 15 and 16 to the rear wheel brake cylinders when the biake cylinder pressure is sufficient to move a plunger 28 to the right against a pre-loading spring 28. Then if, due to brake drum expansion, a slight reduction in brake cylinder pressure takes place, the plunger 28 will move to open the pilot valve 22 only, to allow make up of pressure from the master cylinder to the full value, the area of the pilot valve effective to master cylinder pressure being small compared with the area of the plunger 25 effective to brake cylinder pressure. Fig. 4 shows an arrangement wherein a separate master cylinder supplying connections 11 and 50 pressurises the rear and front wheel cylinders through connections 43 and 82 and a ball valve 46 may be opened to by-pass the limiting valve 17, 22, if the brake cylinder pressure to the front wheels by connection 52 should fail.
Patent GB-980982-A (GB)
Title: Improvements in or relating to forge rolls for use in welding aluminium or aluminiumalloy portions
IPC: B23K13/04
Filed: 1963-01-11
Abstract: 980,982. Welding by pressure. CONTINENTAL CAN CO. Inc. Jan. 11, 1963 [Aug. 22, 1962], No. 1462/63. Heading B3R. A forge roll for welding lapped edges of aluminium or aluminium alloy comprises at least a rim portion of non-ferrous alloy heat treated to Rockwell hardness of C20-C40. An aluminium or aluminium alloy strip S, Fig. 1, formed into a gapped tube is fed over a horn 11 having a separator wheel 14 to maintain one of the edges 12, 13 slightly above the other, hourglass rolls 15, 16 being provided to bring the edges heated to welding temperature at which a molten or molten and solid phase exist by electrodes 17, 18 supplied with high frequency current into overlapped relation at a point where an internal forge roll 26 carried by the horn co-operates with an upper forge roll 27 in an adjustable support 28. Support rolls 23, 24 on the horn within the tube co-operate with support rolls 21, 22 on a support 20 outside the tube. The forge roll 27 is of e.g. beryllium copper, titanium nickel, beryllium nickel and " Mouel " (Registered Trade Mark). A heated temperature regulating liquid, e.g. oil at 100-300‹ F., is passed through the roll 27 to maintain the surface temperature of the roll between 330-150‹ F. In a modification the roll is formed as a separate member, e.g. only a rim secured to a shaft, the shaft being of the same metal as the roll member or being of steel. In a further modification the roll comprises a portion 44, Fig. 5, having an integral shaft 48 which has an inward projection 50 provided with liquid flow apertures 52 and a baffle 53 and screwed into the portion 44, a portion 47 also having an integral shaft portion 54. The aluminium alloy strip 5 may include 2¢% magnesium and “% chromium or 1“% manganese. The inner roll 26 may be of the same material as the outer roll 27 and may be similarly temperature controlled. Tubes 56, 57 in the horn carry temperature controlling liquid for roll 26, 58, 59 carry lacquer for coating the interior of the welded tube, and 60 carries inert gas to reduce oxidation at the weld area.
Patent GB-544699-A (GB)
Title: Apparatus for removing dust from air or other gases
IPC: B01D47/02
Filed: 1941-02-04
Abstract: 544,699. Washing air and other gases. BERNSTEIN, L. Feb. 4, 1941, No. 1479. Convention date, Feb. 5, 1940. [Class 55 (ii)] In apparatus for removing dust from air or other gas, the air is driven under pressure through a tube 3 against the surface of water 2, heavier dust particles being forced under the surface, and lighter particles collecting on the surface and being removed by a skimming comb 12 which is mounted on endless chains 13 and moved across the surface of the bath, the purified air escaping through an outlet 4. The dust collected by the comb 12 is removed by a comb 18 the teeth of which interengage with the teeth of the comb 12, the comb 18 being periodically raised to eject the dust through an outlet 18b. The dust driven into the water collects in a trough 7 in the bottom of the container, and is discharged by a screw conveyer 6 through an outlet 9. The tube 3 may be adjusted relatively to the surface of the water, and steam may be introduced to prevent freezing.
Patent GB-130357-A (GB)
Title: Improvement in the Manufacture of Explosives.
Inventor: JAMES THOMAS CAMPBELL
IPC: C06B25/04
Filed: 1918-01-26
Abstract: 130,357. James, T. C., Jones, J. I. M., and Lewis, R. I. Jan. 26, 1918. Explosives.-Consists in making trinitrodiphenylamines by condensation of trinitrophenylmethylnitramines with primary amines, and in nitrating these condensation products to obtain such materials as hexanitrodiphenylamine and pentanitromethyldiphenylamine for use as or in explosives.
Patent GB-246470-A (GB)
Title: Improved overflow valve for steam injectors
IPC: F04F5/46
Filed: 1926-01-19
Abstract: 246,470. Schõffer & Budenberg Ges. Jan. 21, 1925, [Convention date]. Giffard injectors; overflow arrangements.-An automatic overflow valve of the hollow piston type is provided with holes a<1> in its sides so that when the injector has started and the space above the piston is filled with water under pressure water leaking past the packing will pass into the low pressure space 2 instead of escaping into the atmosphere by the pipe 1.
Patent GB-650660-A (GB)
Title: A device for ensuring a permanent synchronisation of a main and subsidiary clocks
IPC: G04C13/08
Filed: 1946-02-18
Abstract: 650,660. Electric clocks. PFEFFER, V. Feb. 18, 1946, No. 1559/50. Divided out of and addition to 650,611 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 22, 1946. [Class 139] The parent Specification describes a clock system including a main clock and one or more subsidiary clocks of the polarized armature type, wherein upon every reception of current impulse or group of impulses of the same polarity the rotatable polarized armatures of the subsidiary clocks are mechanically arrested after having been stepped on by the current impulse or impulses, the arresting means' being actuated by the same current impulse as the polarized armature at each change of polarity current to secure a permanent synchronization of the subsidiary clock with the main clock. According to the present invention the arresting means comprises four pins 22 arranged at 90 degrees apart on the armature 7, and an arresting member in the form of a lug 23 on an auxiliary armature 21.
Patent GB-1026987-A (GB)
Title: Nickel plating process
Inventor: LAW MALCOLM JOHN
IPC: C25D3/16
Filed: 1964-01-14
Abstract: Nickel plating baths include dimethyl-aminopropyne or its hydrochloride.  The bath preferably also includes mono-or bi-nuclear aromatic sulphonic acids, sulphonamides, sulphonimides, or the salts thereof with alkali metals, ammonia, Mg or Ni. Other optional additions include 2 propyne-1-sulphonic acid, sodium alkyl sulphonate, coumarin, boric acid, and alkali metal halides.  The nickel salt may be sulphate, chloride, sulphamate, fluoborate, or formate.  The sulphonic acid component may be for example, sodium p-chlorbenzene sulphonate, sodium phenyl ethylene sulphonate, o-amino benzene sulphonic acid, sodium p-toluene sulphinate, o-benzoic sulphimide, N:N dicarboxyethyl benzene sulphonamide, 2-naphthol-3, 6-disulphonic acid, sodium thiophene sulphonate, and 2-(4-pyridyl)-ethyl sulphonic acid.
Patent GB-972413-A (GB)
Title: Apparatus for preventing single-phase operation of three-phase electric motors
IPC: H02H3/13
Filed: 1963-01-14
Abstract: 972,413. Protective arrangements. HITACHI Ltd. Jan. 14, 1963 [Jan. 16, 1962], No. 1649/63. Heading H2K. A system for preventing single phase operation of a three phase electric motor 1 comprises current transformers 8, 9 associated with any two of the phase conductors 2, 3, 4 and connected to supply three phase current to a full wave rectifier 10, the output of which passes through the primary of a non-saturable current transformer 11 and a thermal relay 12 supplied with ripple current from the secondary of the transformer 11. Under normal conditions the ripple current is small but in the event of one phase of the supply failing only single phase current will be supplied to rectifier 10 and the amplitude of the ripple will increase sufficiently to operate the thermal relay 12 to close its contacts and thus trip a circuit-breaker 5 to stop the motor. In a modified circuit (Fig. 2, not shown), the contacts of relay 12 are normally closed to energize a contactor. Upon phase failure the contactor is released to stop the motor.
Patent GB-509828-A (GB)
Title: An improved case for photographic light filters
IPC: G03B17/12
Filed: 1938-01-18
Abstract: 509,828. Cases combined with cameras. KELLNER, O. Jan. 18, 1938, No. 1681. Convention date, Jan. 18,1937. [Class 18] [Also in Group XX] A case for photographic light filters comprises a circular, square, polygonal or other shaped base 2, a lid 1, an intermediate body part 3 of such external dimensions as to form a sliding fit with the lid and base, and a ring 4 of such external dimensions as to form a sliding fit with the inner walls of the part 3 and of such internal dimensions as to form a sliding fit with the objective mounting of a camera, so that the parts 3 and 4 may together be applied, without the parts 1 and 2, to the objective mounting to form a shading hood therefor. When the parts 3 and 4 are in use as a shading hood, the filters may be contained in the parts 1 and 2 which form a sliding fit; when the whole case is assembled, the filters rest on the projection 5. The Specification as open to inspection under Sect. 91 refers also to the construction of the parts 3 and 4 in one piece. Boxes are also described in which the body part 7 comprises a partition 8, Figs. 7, 8 (Cancelled), the portions 9 and 10 of the boxes serving to hold filters and shading hoods respectively. This subject-matter does not appear in the Specification as accepted.
Patent GB-781445-A (GB)
Title: Improvements relating to dielectric heating apparatus
Inventor: KINDER ARTHUR THOMAS
IPC: B29C63/00
Filed: 1952-10-13
Abstract: 781,445. Dielectric heating. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 29, 1953 [Oct. 13, 1952], No. 1862/56. Divided out of 781,443 [Group VIII]. Class 39(3) Dielectric heating apparatus, Fig. 4, suitable for securing thermoplastic binding material to belting; Figs. 1-3 (not shown), comprises a movable bar electrode 10 set in an insulating carrier 11 fused round the electrode and supported by rods depending from a beam 8 on which is mounted an eccentric 18 engageable with rollers 20. A pressure member 16 is connected at each end to a stirrup member 14 the upper cross arm of which rests on a helical spring 15 located on the end of the carrier 11. The carrier is forced downwardly against the pressure of the springs 15 by rotation of the eccentric, the electrode 10 engaging work placed on an earthed electrode 13. In a further construction, Fig. 6. two pairs of electrodes 10<SP>1</SP>, 13' are provided for applying two bindings simultaneously, and cams 18<SP>1</SP> rotatable by a lever 26 force the carrier and electrodes 10<SP>1</SP> downwardly against upward pressure of springs 28. Switches for switching on the voltage may be operated by the moving electrode or electrodes when satisfactory pressure has been applied to the work. Specification 781.446 [Group VIII] is referred to.
Patent GB-246491-A (GB)
Title: Improvements in or relating to polymerizing oils
IPC: C10G50/00
Filed: 1926-01-22
Abstract: 246,491. Barrett Co., (Assignees of Miller. S. P.). Jan. 23, 1925, [Convention date]. Mineral and tar oils.-In a system for polymerizing oils such as naphtha, means are provided for periodically itnroducing definite amounts of oil and of polymerizing agent into an agitating system, agitating the oil and agent, and withdrawing the polymerized product. The oil passes from a supply tank 1 through a cooler 2 into a tank 3 provided with a cooling coil 6. A float valve 5 closes the supply pipe 4 when the proper amount of oil has passed into the tank 3,and a valve 8, controlled by a timing device 15, is opened to permit the oil to pass to the polymerizer 9 which is provided with a cooling coil 10. The oil is caused to circulate through the polymerizer by means of a. pump 11 driven by a motor 14 connected to the timing device. A definite quantity of a polymerizing agent, such as sulphuric acid, passes from a supply tank 17 to a compartment 20 of a tank 19, and is transferred to the compartment 21 by a. siphon 23. As soon as the oil commences to circulate through the polymerizer 9, the acid is drawn from the tank 21 through a siphon, which consists of a small pipe 24 joining a larger pipe 25 connected to the outlet pipe 12 from the polymerizer. When the oil and acid have been circulated through the polymerizer for the required length of time, the timing device opens a valve 28 and the mixture is discharged into a washer 29 through a pipe 27. The suction produced in a pipe 36 draws water from a tank 34 and permits a float 35 to open a valve 32 which allows water to pass to a sprayer 30 in the washer 29. The washed mixture drains into a settling tank 39, from which the spent acid and water may be drawn off by a pipe 41 while the polymerized oil returns through a pipe 40 to the washing tank. The valve 32 closes automatically as soon as sufficient water has passed to the washer 29. At the end of the washing operation, the timing device closes a vent 43 in a pipe 42, and the washed oil is drawn along this pipe and circuited through a neutralizer 46 containing caustic soda solution by means of a pump 44 driven by a motor 48. The polymerized oil is finally withdrawn through an outlet pipe 49. The timing device 15 may be an electric time switch, adapted to close the circuits of solenoids controlling the various valves at the predetermined times. As soon as the mixture has passed to the washer through the valve 28, this valve is closed and the valve 8 is opened to admit a further quantity of oil to the polymerizer. If desired, the addition of the polymerizing agent and the operation of the water sprayer may also be controlled by timing devices.
Patent GB-716339-A (GB)
Title: Improvements in or relating to copoly-ethers for use as synthetic lubricants
Filed: 1952-01-23
Abstract: Copolyethers useful as lubricants of plasticizers are prepared from a mixture of 80-25 mol. per cent. of ethylene oxide with 20-75 mol. per cent. of 1-butene oxide.  Suitable catalysts for the reaction are alkaline, e.g. metal hydroxides or alkali metal alcoholates, or acidic, e.g. boron trifluoride or aluminium chloride.  The catalyst may be suspended in a diluent, e.g. dibutyl ether, petroleum ether, benzene, xylene or ethyl benzene. Super-atmospheric pressure, which may be maintained by unreacted alkylene oxides mixture, may be employed.  An inert atmosphere, e.g. nitrogen may also be employed. The temperature is preferably between 40 DEG C. and 200 DEG C.  A reaction initiator may be employed, e.g. water, a monohydric alcohol or phenol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol or butylene glycol.  The reaction initiator may replace the reaction diluent.  The products may be esterified or etherified.  A number of specific examples are given together with the physical properties of the products.  Specifications 584,367, 601,604, 646,292, 653,352, 653,353 and 669,206, are referred to.ALSO:Copolymers of ethylene oxide and 1-butene oxide (see Group IV (a)) are useful as lubricants.  They have poor water solubility and improved oil miscibility as shown by mixing equal volumes of copolymer and medicinal white oil and noting the lowest temperature of miscibility.