baber/WOPTO huggingface dataset:
Patent GB-886714-A (GB)
Title: Production of fluorocarbons
IPC: C07C17/386
Filed: 1959-08-11
Abstract: <PICT:0886714/IV (b)/1> Hexafluoropropylene and perfluoro-cyclobutane are separated from a mixture of fluorocarbons obtained by the pyrolysis of chlorodifluoromethane at 400 DEG C. to 900 DEG C. followed by the removal of tetrafluoroethylene, hydrogen chloride and unreacted chlorodifluoro-methane from the mixture, by extractive distillation under liquid distillation conditions by aromatic or chlorinated aromatic hydrocarbons.  The pyrolysis may be carried out from 0.05 to 5 seconds at a pressure between 0.1 to 2.0 atmospheres and the hydrocarbon may be alkyl or chlorosubstituted benzene such as xylene, toluene, chlorobenzene o- or p-chlorotoluene, or o-chloroethyl benzene preferably employed in from 1 to 25 times the amount of fluorocarbons produced in the pyrolysis.  In an embodiment of the process, gases from the pyrolysis of chlorodifluoromethane in a multiple tube furnace (10), are cooled (11) and compressed (12) and tetrafluoroethylene and hydrogen chloride are distilled off (13), chlorodifluoromethane removed (15), and the compounds boiling higher than chlorohexafluoropropane removed (17), the mixture is then passed to an extractive distillation column (18) into which solvent is charged.  The overhead fraction comprising pure hexafluoropropylene and perfluorocyclobutane is then separated in a further distillation column (19) and the solvent dried and recycled.  Specified examples are given and the process may be employed for the preparation of hexafluoropropylene and perfluorocyclobutane.  U.S.A. Specification 2,551,573 is referred to.
Patent GB-171566-A (GB)
Title: Improvements in, and relating to, motor spirit
IPC: F28B5/00
Filed: 1920-09-27
Abstract: 171,566. Burnell, A. G., and Dawe, R. W. Sept. 27, 1920. Motor spirit; mineral oils, purifying &c. - A motor spirit is obtained from the liquid deposited in the cylinders in which purified oil-gas is stored at about 150 lb. per sq. in. pressure, by subjecting it to reflux distillation with anhydrous aluminium chloride or other metal chloride, collecting the 70- 140‹ C. fraction and washing it with soda solution and with water. Dissolved oil gas driven off before or during the treatment with metal chloride is purified by passage through alkaline hydroxide solution and slaked lime, and is used for heating or lighting or for enriching coal-gas. In the apparatus shown the oil-gas liquid is freed from water in the tank 2 by settling or by agitation with calcium chloride or quick lime, and is gradually run into and mixed with 2 oz. of aluminium chloride per gallon of oil in the jacketed still 4 cooled by water if necessary. Steam is now admitted to the jacket and reflux distillation at 75-80‹ C. continued for about 6 hours, the vapours passing through the still head 23 to a condenser 24, and the liquid returning through a box 25 and a siphon tube 11, while uncondensed gas passes through pipe 26 to the purifiers 27, 28 containing respectively a 5 per cent solution of caustic soda and a 3 in. layer of slaked lime. Valve 12 is then closed and valve 13 opened and the steam pressure raised as is necessary to collect the 70-140‹ C. fraction in a tank 29 which fraction, if satisfactory on testing, is run into a mixer 31 to be treated with about 3 per cent of a 10 per cent solution of sodiumcarbonate crystals or a 5 per cent solution of caustic soda followed by washing with water. If the distillate in the tank 29 is not satisfactory on testing, it is run into the still 4 for retreatment.
Patent GB-158648-A (GB)
Title: Improvements in or relating to lubricating apparatus
IPC: F16N7/40
Filed: 1919-11-06
Abstract: 158,648. Fedden, A. H. R., Butler, L. F. G., and Cosmos Engineering Co., Ltd. Nov. 6, 1919. Centrifugal-action lubricators.-Oil is supplied to. the crank webs, valve-operating cams, or other parts of an internal-combustion engine by means of a jet which is thrown centrifugally from a rotating nozzle 12, the rotating distributor forming a single unit with a pump. Once in each revolution the oil enters an opening 15 in a stationary pipe 14 leading to the desired point. A gear-wheel pump 21 supplies oil through a vertical pipe 10 to the nozzle 12, the parts being operated by a toothed wheel 16 driven from the engine.
Patent GB-1117665-A (GB)
Title: Improvements in or relating to textile processing apparatus
IPC: D01G21/00
Filed: 1965-06-29
Abstract: 1,117,665. Sliver forming. MAREMONT CORP. 29 June, 1965 [30 June, 1964], No. 27446/65. Heading DIN. A web W coming e.g. from a carding device is condensed by being passed between guide plates (34, 35) (Figs. 2, 4 not shown) and rollers (29, 31) of the type described in 1,092,084. By the insertion of the different spacers (41) (Fig. 4) the separation of the plates (34, 35) is made adjustable so that the natural tendency of the web W to pleat as it passes to the rollers (29, 31) is encouraged and a rectangular sliver having a regular pleated structure emerges from the rollers. The rectangular sliver then passes over an adjustably angled bar 53 to have its width determined and to be turned to pass along a table 21 above and parallel to which bar 53 is situated. As shown in Fig. 1 a series of carding devices is arranged side by side and the slivers therefrom are superimposed on each other on the table 21 which runs along the length of the series. Calender rollers 63 consolidate the slivers and adjustably positioned posts 59, 75, 77 maintain the width of the slivers constant. A plate 61 is arranged beneath each bar 53 to prevent the sliver therefrom coming into immediate contact with the slivers already laid on the table. The combined sliver then passes to a further processing machine such as a draw frame. A stop switch may be associated with each movable roller 29.
Patent GB-985361-A (GB)
Title: Trough band conveyor
IPC: B65G17/42
Filed: 1963-07-11
Abstract: 985,361. Endless conveyers. A. JOCHUMS, and E. WITTKOP, [trading as HAUHINCO MASCHINFABRIK G. HAUSHERR, JOCHUMS & CO.]. July 11, 1963 [July 14, 1962; July 26, 1962; Oct. 25, 1962], No. 27493/63. Heading B8A. Each plate 2 of an apron-type endless conveyer is secured by a pin and eye connection 22, 21, to one end of an attachment 4 forged or welded to a corresponding vertical chainlink 3. The other end of the attachment 4 has a lug 14 which engages a slot 11 in the plate 2. The lug covers the slot 11 to prevent material escaping. The leading end of the attachment 14 engages, with clearance, a slot in the rear edge of the adjacent plate 2. The lug 14 may be replaced by a hook-like member (Fig. 1, not shown). The pin and eye attachment 22, 21 may be replaced by a pin which passes through apertures in the plate 2 and attachment 4 (Figs. 1 and 3, not shown).
Patent GB-603408-A (GB)
Title: Electric switches for the regulation of furnaces operating with correct fuel/air ratio
IPC: F23D14/60
Filed: 1945-10-20
Abstract: 603,408. Interrupters. HERBERT, Ltd., A., and FRANCE, W. Oct. 20, 1945, No. 27627. [Class 38 (v)] An interrupter for controlling the supply of fuel to a furnace comprises a pair of contacts 25, 26 carried, respectively, by an adjustable rocker 24 and a spring-urged arm 15 having a roller 16 bearing on a continuously motordriven snail cam 13. The rocker 24 is manually adjustable about its pivot 19 by a cam 21, the position of which determines the proportion of each revolution of cam 13 that the contacts 25, 26 are closed, and which is designed to give straight-line regulation. In the continuouslyclosed position of the contacts 25, 26, as shown, the rocker opens contacts 32 to de-energize the motor 12. In the minimum-setting position, engagement of contacts 25, 26 occurs at the highest point of cam 13. Specifications 534,395, 559,034, and 559,285 are referred to.
Patent GB-228607-A (GB)
Title: Hearth-smelting or heating furnaces
IPC: F28D17/02
Filed: 1923-11-03
Abstract: 228,607. Faþoneisen-Walzwerk L. Mannstaedt et Cie Akt.-Ges., and Bansen, H. Nov. 3, 1923. Addition to 184,252. Gaseous-fuel furnaces.-In the furnace of the parent Specification, the air supply to the burners is also heated in regenerating chambers which may be arranged and controlled in a manner similar to that employed for heating the gaseous fuel. As shown in Fig. 2, the air for combustion at one or other of the burners A<1>, A" passes first through one or other of the regenerative chambers L', L" disposed adjacent the similar channels C<1>, C" for the fuel. In the form shown in Figs. 4 and 6, the space between the burners constitutes the hearth proper, while the space H serves as a preheating hearth. The air-heating regenerators may be arranged in the burner passages instead of below the furnace as in Fig. 2. Fig. 9 illustrates diagrammaticallv the arrangement of the plant, the gas regenerative chambers C<1>, C<11> and the chambers L<1>, L<11> serving the burners A<1>, A<11> and the combustion products passing to the chimney X some by way of the inactive chambers C<1>, L<1> and the rest through an economizer Z.
Patent GB-1023101-A (GB)
Title: Fluid control means
IPC: G05D7/01
Filed: 1963-07-12
Abstract: 1,023,101. Valves. STANDARD TELEPHONES & CABLES Ltd. July 12,1963 [July 13, 1962], No. 27708/63. Heading F2V. [Also in Division G3] A device for controlling fuel flow to a burner under high and low fire conditions and comprising two diaphragm valves in parallel (see Division G3) includes an electromagnetically operated pilot valve 59, Figs. 1 to 12 (not shown). This valve comprises a spring-loaded armature 60, of electromagnet 47, fulcrumed on a polepiece 84 and forming a valve member movable between two orificed seat members 70, 71 of which one orifice 58 admits pressure to a chamber 54 and the other vents the chamber. The seat members are constituted by blocks, adjustable in rectilinear guides 77, 79 through elongated slots and screws 72 and sealed by 0-rings 80, 81. The valve diaphragms 13, 14 are clamped between casing parts of which the interior walls are slightly ovate as shown in Fig. 5. This is stated to increase the life of the diaphragms without hysteresis effects.
Patent GB-535589-A (GB)
Title: Improvements relating to the coating of coal and other solid fuel
IPC: C10L9/10
Filed: 1939-10-12
Abstract: 535,589. Fuel. FIFE. H. R. Oct. 12, 1939, No. 27756. [Class 50] A blend of "petrolatum" and water, for use in spraying fuel to prevent degradation, is obtained in a tank 1 fitted with a heater 2 and an agitator 3. It is pumped under heavy pressure and above the boiling point of water through a line 7, surrounded by a heating coil 8, to an atomising nozzle 9 which directs the spray towards a stream of falling coal; a second nozzle 10 may be located on the opposite side of the stream. The cone of blend issuing from the nozzle may be surrounded with an envelope of low pressure steam which is supplied to the spraying nozzle. U.S.A. Specification 1,912,697 is referred to.
Patent GB-381331-A (GB)
Title: Improvements relating to brushes for road sweeping and like machines
IPC: A46B13/00
Filed: 1931-10-06
Abstract: 381,331. Rotary brushes. DREWRY, J. S., Kingston, William Way, and SHELVOKE & DREWRY, Ltd., Icknield Way, both in Letchworth, Hertfordshire. Oct. 6, 1931, No. 27761. [Class 19.] Rotary brushes for road-sweeping machines comprise a flexible sleeve A of strip metal such as gunmetal, loosely encircling a fixed shaft B and a series of stocks C of brushes running loosely on the coil sleeve A. Each brush has one or more holes C<2> in which are shouldered pins D engaging corresponding holes in adjacent stocks so as to connect the stocks together. The brush is preferably rotated by a driven plate or disc E at one or each end, having studs E<1> to engage holes in the stocks. The sleeve A may be carried frictionally by the brush stocks or it may be driven positively.
Patent GB-1010252-A (GB)
Title: Copolymers
IPC: C08G75/12
Filed: 1963-07-12
Abstract: A solid copolymer has repeating units consisting essentially of (a) -OCH2-groups interrupted with (b) <FORM:1010252/C3/1> in which R, which may be the same or different, is hydrogen, or an alkyl or haloalkyl radical of one to six carbon atoms, X is methylene, methylene ether or methylene thioether and n is 0, 1, 2 or 3, the ratio of (b)/(a) being 0 to 100/100.  The copolymers may be produced by polymers, formaldehyde or trioxane with a cyclic thioether, thioacetal, dithio ketal or thioketal. Specified compounds are ethylene,-propylene or butylene sulphide, tetrahydrothiophene, 1 - 3 - oxythiolane, 2 - methyl 1 - 3 - oxythiolane, 1 - 3 - dithiolane, and 2-methyl - 1 - 3 - dithiolane.  Cationically active catalysts, e.g.  Lewis acids, may be present. An inert liquid media may or may not be present. A third comonomer, e.g. ethylene oxide, propylene oxide, 1-3-dioxolane and diethylene glycol formal may also be present.ALSO:1,3 - Oxothiolane and 2-methyl-1,3-oxothiolane may be prepared by the reaction of a mercaptoethanol with an aldehyde or an aldehyde-yielding compound, in the presence of an acid.  In an example, 1 : 3-oxothiolane is prepared by heating 390 parts mercaptoethanol and 153 parts paraformaldehyde in the presence of 0.05 to 0.5% of a strong acid, 200 parts by volume of benzene added and the water of reaction distilled off azeotropically; the solvent is removed and the residue distilled under normal pressure or in vacuo either after the addition of a further 0.2 to 0.5% acid or after neutralization of the acid present.  The yield is 9%.  The product may be purified with potassium or aluminium hydroxide and dried over metallic sodium.
Patent GB-1187776-A (GB)
Title: Improvements in and relating to Seals for Hydraulic Apparatus
Inventor: HEMUS ROBERT BAYNHAM
IPC: F16D65/18
Filed: 1966-06-22
Abstract: 1,187,776. Brake cylinder; disc brakes; sealing boots. GIRLING Ltd. 13 June, 1967 [22 June, 1966], No. 27819/66. Headings F2B, F2E and F2F. A sealing boot between a piston 18 and an hydraulic cylinder 24 for actuating a disc brake 38, 40, 42 is secured to the cylinder by a ring 30 seated in an internal peripheral pocket 28 formed in the boot. The ring 30 has radial fingers 32 which resiliently engage an axial extension 26 of the brake caliper member 22 containing the cylinder 24 and the boot has a lip 34 deformed into sealing engagement with a shoulder 27 of the member 22. The boot is secured at its inner periphery to a reduced portion 20 of the piston 18 by a flange 12 which may be an interference fit on the portion 12 or may be clamped thereon by a ring 19 of aluminium or plastics shrunk around the flange 12 by an electromagnetic or dielectric heating process respectively.
Patent GB-1332289-A (GB)
Title: Fuel-injection pump
IPC: F02M59/28
Filed: 1972-06-14
Abstract: 1332289 Fuel injection pumps FRIEDMANN & MAIER AG 14 June 1972 [14 June 1971] 27846/72 Heading F1A The reciprocable pumping plunger 4 of a fuel injection pump is rotatable in its barrel 5 to control delivery, rotation of the plunger being effected by a longitudinally movable control rod 9 provided with transverse slots 15 in which are engageable driving members 8 carried by a sleeve 7 keyed to the plunger 4. As shown the members 8 are in the form of cylindrical studs 8 secured to a flange 12 on the sleeve 7, the flange 12 being received in a recess 11 in the control rod 9 thereby to prevent the rod from rotating. The ends of the recess 11 abut the flange 12 to limit the rods movement. In a modification the driving members 8 are in the form of spherical or part-cylindrical projections provided on a reduced diameter portion of the sleeve 7, Fig. 10 (not shown). Thus in this modification movement of the rodis limitedby tangential transitional surfaces (26) between the reduced and larger diameter portions engaging the rod 9.
Patent GB-297803-A (GB)
Title: Improvements in and relating to bladed wheels
IPC: B63H1/10
Filed: 1928-09-28
Abstract: 297,803. Voith, W., Voith, H., and Voith, H., (trading as Voith, J. M. [Firm of]). Sept. 28, 1927, [Convention date]. Propelling.-Paddle wheels for use in air and water acting as propellers, of the kind wherein the blades are feathered about axes parallel to the main axis and are always immersed in the medium, are characterized by the feature that the ratio of curvature of the middle crosssectional surfaces of the blades is smaller than the arithmetical mean and greater than the geometrical mean of the ratio of curvature of relative flow determined at those two points of the circle traced by the blade axis which lie on a diameter perpendicular to the direction of relative translational motion between the wheel and the fluid medium. The blades are pivoted on their axes and carry arms on the ends of which are rollers engaging a cam 5, Fig. 2, and the radius R, = PM2, Fig. 3, to which the median line of the cross-section is curved is obtained by determining first the instantaneous centre M1 for the blade P and roller Q and thence obtaining the centre M2 by imposing the translational velocity, the value M1, M2 being obtained by multiplying PM1 by the translational velocity V divided by the peripheral velocity u. This value of R is obtained at the positions C, A on a diameter perpendicular to the direction of translational motion and the final selected ratios for the blade lies between the arithmetical mean and geometrical mean of these two calculated values. The ratio is to be regarded as that for the median line of the blade section as indicated in Fig. 4. In taking the different crosssections, those of the middle surfaces of the blade lie within the limits stated above, but at the inner and outer ends these limits may be departed from.
Patent GB-1382603-A (GB)
Title: Heat engine and a method of operating a heat engine
IPC: F02B75/02
Filed: 1972-06-14
Abstract: 1382603 Rotary positive-displacement engines T HENGSBACH and G OLBRISCH 14 June 1972 27911/72 Heading F1F An I.C. engine comprises a sliding-vane compressor 20, a combustion chamber 21 and a sliding- vane motor 22 connected to the compressor by a shaft 24 and variable transmission 23, which is controlled in accordance with the pressure and temperature in the chamber 21 so as to maintain a constant pressure in the latter. The compressor and motor are said to effect adiabatic changes of pressure. In another embodiment, Fig. 4 (not shown), the motor is replaced with four motors of differing capacities, which motors can be used in various combinations.
Patent GB-832014-A (GB)
Title: Insulated electrical connector tag assemblies
IPC: H01R9/22
Filed: 1957-09-04
Abstract: 832,014. Binding-posts. OXLEY, R. F. Aug. 21, 1958 [Sept. 4, 1957; Dec. 9, 1957], Nos. 27944/57 and 38230/57. Class 38 (1). A terminal tag 10 has a central aperture in which is located a resilient bush of, for example, P.T.F.E., said bush being expanded radially above and below the tag by a flanged eyelet 13 inserted in the bush and swaged over at 16. Fig. 6 shows another embodiment in which the eyelet 24 is slightly greater in diameter than the bore of the bush and does not extend through the bush. The end of the eyelet is tapered so as to facilitate the forcing of the eyelet into the bush. The flange of the eyelet has grooves on opposite faces forming projections 27, 28. When several tag assemblies are mounted on a support 32, Fig. 8, by means of a bolt 30, the projections 28 bite into the bushes of adjacent assemblies to prevent relative rotation of the tags. The grooves may be cut through to form sharper projections (Fig. 9, not shown). The bolt 30 may be replaced by a rivet or the eyelets may have threaded spigots adapted to screw into adjacent eyelets or be attached to the support by a nut. In a further construction the spigot may be omitted and the internal screwthread retained so that several assemblies may be screwed on to a bolt. The eyelet itself in Fig. 2 may comprise a hollow bolt, the second flange being constituted by a nut or a washer behind a nut.
Patent GB-876539-A (GB)
Title: Photographic diaphragm setting mechanism
IPC: G03B17/02
Filed: 1957-09-04
Abstract: 876,539. Photographic diaphragms with setting means for flashlight exposures. GAUTHIER G.m.b.H., ALFRED. Sept. 4, 1957 [Sept. 4, 1956], No. 27950/57. Class 98(1) The aperture of a photographic diaphragm is adjusted for flashlight exposures by means influenced by the settings of relatively adjustable scales of subject distance, type of flash and film speed and connected either to the subject distance or the type of flash scale. As shown the diaphragm is disposed in the objective shutter mount which supports an adjustable shutter speed ring 3, a rotatable ring 14 bearing a type of flash scale 8 and a window 14b through which a film speed scale 10 on a separate ring 16 is visible, a rotatable ring 13 carrying a resilient member 12 bearing an index 11 adjustable to set the flashlamp type used, and a subject distance scale 7 on a fixed ring 5. The shutter speed ring is set to a value appropriate for unsynchronized flash exposures, e.g. 1/30th sec.; the film speed is set in window 14b, the setting being maintained either by frictional engagement between the rings 14, 16 or by forming one of the knobs 15 on the ring 14 as a releasable pin engaging in holes in the ring 16; the resilient nose 12a is located in the appropriate notch 14a in the ring 14 to set the type of flash; and rings 14 and 16 are rotated together to set the index 11 on the subject distance scale 7 by a rearwardly extending pin 17 attached to the ring 16 and to a diaphragm adjusting member 2 altering the diaphragm and having an operating handle 2a. In an alternative embodiment employing a light value setting scale 22 instead of a shutter speed scale the light value scale is arranged to first reduce the shutter speed at maximum diaphragm aperture (settings 1 to 3) and then when the fastest speed is reached to reduce the diaphragm aperture for higher light values (settings 4 to 9), the diaphragm adjusting pin 17 being spring urged against a lug on the ring 3 carrying the scale 22. This scale bears symbols indicating the range in which adjustment of the diaphragm occurs, e.g. flashlamp bulbs, and may be differently coloured from the shutter speed adjusting portion and may have restraining means indicating the limits of diaphragm adjustment and either releasable or overcome by applying more force to the ring 3. Means are provided for synchronizing different kinds of flash lamps to the shutter speed used. In this arrangement the ring 16 is dispensed with and the ring 3 carries the film speed scale 10 and is in frictional or releasable engagement with the ring 14 and after setting of film speed and type of flash the subject distance setting is achieved by rotating the ring 3. The flash identification scale may comprise symbols of different shapes and colours instead of manufacturer's designations as shown or may consist of or comprise additionally a scale of flash factors.
Patent GB-158708-A (GB)
Title: Improvements in ore separating devices
IPC: B03D1/16
Filed: 1919-11-11
Abstract: 158,708. Jones, A. H. Nov. 11, 1919. Surface-tension separating-apparatus.-A flotation apparatus for ore separating comprises an upright conduit, to the lower portion of which the ore pulp is admitted and agitated, and from the upper end of which the pulp is discharged, together with means for forcing air through the pulp after its discharge. In one form, ore pulp and flotation reagent are admitted through a feed-pipe 25 and openings 14 to a vertical cylinder 12 in which they are agitated and propelled upwards by revolving blades 11, 17, assisted by baffle-plates 26. The pulp overflows with an outward swirling motion falling upon a porous diaphragm 21, 22, through which compressed air, supplied through a pipe 24, is forced and passes into the emulsified pulp producing froth carrying in suspension the values of the ore. The heavier pulp falls into the annular interspace 16 and so re-enters the cylinder 12. The froth accumulates at the top and overflows the rim of the cylindrical extension 4 passing into a launder 35, from which it is discharged. The gangue is discharged through a box 30 by means of a valve 28 controlled by a float 29. A pipe 40 is provided for emptying the apparatus.