baber/WOPTO huggingface dataset:
Patent GB-743603-A (GB)
Title: Fluid-operated reciprocatory mechanisms
Inventor: HEARN JOHN
IPC: F15B15/24
Filed: 1954-05-25
Abstract: 743,603. Welding by pressure. BENTON & STONE, Ltd. May 25, 1954 [July 3, 1953], No. 18468/53. Class 83 (4). [Also in Groups XXVIII and XXIX] In a fluid-operated device for giving both long and short strokes, e.g. to the movable electrode of a spot or stitch-welding machine, the cylinder a has a length appropriate to the long stroke and of two pistons i, j on a piston rod f extending through both ends of the cylinder, one i is fixed to the rod and the other j is slidable thereon to an extent corresponding to the short stroke. Fluid, e.g. compressed air, other gas or liquid may be admitted to and exhausted from the cylinder through connections d, e in end caps b, c. A fluid connection to the space between the pistons is by way of a bore in the piston rod and orifices o. To effect a long stroke with the pistons in contact and at the top of the cylinder, air at 40 lb. per sq. in. is admitted at e and the rod is moved until the piston contacts a lower abutment m. To effect an upward short stroke air at 80 lb. per sq. in. is admitted to the space between the pistons, with the 40 lb. per sq. in. supply maintained, and piston i and rod f move upwards until a collar k on the rod engages piston j. Air is exhausted from between the pistons to effect a downward short stroke and to effect the return long stroke air is exhausted from e and admitted at d or a spring is employed. The length of the short stroke is adjustable by providing a screw thread between piston i and the rod or by providing an adjustable collar below piston j.
Patent GB-653034-A (GB)
Title: Improvements in and relating to the vacuum heads of vacuum bottle or like receptaclefilling machines
IPC: B67C3/16
Filed: 1948-07-09
Abstract: 653,034. Filling bottles. BUSBY, S. J. July 9, 1948, No. 18512. [Class 125(ii)] A filling head for a vacuum bottle-filling machine comprises a casing 18, a spigot member 26, an outer tube 7 secured at its upper end in the spigot member, and an inner tube 6 disposed concentrically within the outer tube and having at its upper end an outwardly projecting flange 6a received between the casing and the spigot member, and an annular cap 27 to draw together the casing and spigot member to clamp the flange of the inner tube between them, the co-operating surfaces of the casing, spigot and flange being flat and perpendicular to the axis of the tubes.
Patent GB-530545-A (GB)
Title: Method of starting four-stroke-cycle multi-cylinder diesel engines and means therefor
IPC: F01L13/00
Filed: 1939-06-27
Abstract: 530,545. Starting. YAMASHITA, O. June 27, 1939, No. 18665. [Class 7 (v)] A four-stroke multi-cylinder diesel engine is started by driving the engine initially by external power and converting some of the engine cylinders into compressors delivering air to the remaining cylinders to enable them to function as diesel cylinders, and then restoring the compression cylinders to normal operation, which is started by the driving power of the other cylinders. As shown in Fig. 1, the engine comprises cylinders B<1>, B<2> having valve-gear adjustable so that during the starting operation these cylinders draw in air through their exhaust valves E and deliver compressed air through their admission valves S to the inlet manifold 3 for admission to the remaining cylinders A<1>, A<2>. A valve 7 in the inlet 8 of the supercharger 5 is closed during starting. A valve gear for converting the cylinders B<1>, B<2> to compressors may comprise an axially adjustable cam shaft 13, Fig. 3, carrying cams 20, 21 for normal actuation of the valves of cylinders B<1>, B<2> and cams 22, 23 for converting the valves to compressor operation ; the cams 24, 25 for the valves of the remaining cylinders are of such width as to maintain normal operation of the corresponding valves when the cam shaft is adjusted. For a radial-cylinder engine, Figs. 4 and 5 (not shown), the valves are similarly actuated from axially adjustable cam rings driven from the engine shaft. In a further form, Fig. 6, rods 43, 44 actuated by cams 39, 40 are connected to a sector 45 engaged by a swinging link 47 pivoted at 49 to a valveoperating rod 48 ; the corresponding valve lever 51 is operated from one or other of the cams 39, 40 according to the position of the link 47 on the sector 45.
Patent GB-968010-A (GB)
Title: Photographic camera
IPC: G03B7/12
Filed: 1962-05-15
Abstract: 968,010. Exposure control means for photographic cameras. AGFA A. G. May 15, 1962 [May 19, 1961], No. 18725/62. Heading G2A. A photographic camera includes an automatic exposure regulating device with an exploratory means for an index member of an illuminated measurement device, said means being coupled through a transmission mechanism to setting means for at least one exposure factor; release means for the exploratory means are connected to the transmission mechanism by a spring which tends to exert a restoring zone on said exploratory means and on said setting means. In the embodiment shown in Fig. 1 a ring 2 having a cam 3 which controls the diaphragm aperture and/or the shutter speed setting means in known manner is rotatable either by a ring 4 or by means of a lever 15 (a fork 19 of which engages pin 11) controlled by an exposure meter galvanometer 40 in the following way. Lever 15 and lever 16 are rotatably mounted on pin 13 and coupled together by spring 21 with pin 22 abutting arm 20, lever 16 is also connected by spring 24 to a lever 14, (pivoted on pin 12 and engaged by a pin 58 on a release lever 55,) and by means of pin 22 and slot 29 to rod 30 which in turn is connected to a member 37 a projection of which explores galvanometer pointer 44. The pointer may be clamped between edge 45 of a plate 38 and a slide 45 connected through lever 52 to release lever 55. When release lever 55 is rotated in direction a pin 53 of lever 52 moves in a slot 54 to move slide 47 to clamp pointer 44. Pin 58 rotates lever 14 anticlockwise and by means of spring 24 lever 16 also rotates anticlockwise. This rotation of lever 16 causes projection 36 to explore pointer 44 and lever 15 to rotate and set ring 2 by an amount determined by the position of pointer 44. Lug 57 on lever 55 then engages lug 10 on a shutter operating means. When lever 55 is released, springs 59, 24 restore the parts to the positions shown in Fig. 1. In the embodiment shown in Figs. 2, 3, the shutter release lever 71 is connected by a spring 75 to a rod 69 connected to lever 62 by pin 67. Rod 69 is connected via lever 83 to an exploring plate 88 for pointer 99 and to a lever 91 with a slot 92 which controls a damping lever 94 for pointer 99. The exposure value setting means has a rod 64 controlled by lever 62. The shutter is operated by an arm 78 on release lever 71 engaging pin 79 in the shutter control means. In the variation shown in Fig. 3 lever 62 is replaced by a ring 111 with a setting pin 112. The ring is coupled by gearing to a toothed sector 117. The movement of lever 120 (of lever 69 of Fig. 2) is controlled by the position of pointer 99 and in turn controls the movement of sector 117 by means of edge 119 and pin 118. The impact between pin 118 and edge 119 is not transmitted to the pointer 99 because as lever 71 rotates it frees pawl 126 which is urged by spring 128 to latch lever 120. Pin 79 controls a release means for ring 111, which is driven in direction n by means not shown, as well as the shutter release means.
Patent GB-834224-A (GB)
Title: Improvements relating to floor coverings
Inventor: GREENA ROBERT WALTER FREDERICK
IPC: C08L25/04
Filed: 1955-06-29
Abstract: Floor coverings in which at least one layer of a cementless and tar-free composition based on a polymer or copolymer of an ethylenically unsaturated aromatic hydrocarbon and containing at least 50%, based on the composition, of filler are deposited on the floor base by the application, e.g. by trowelling, of an aqueous dispersion of the composition from which the water is allowed to evaporate.  Polystyrene, copolymers of styrene with butadiene, acrylonitrile, or vinyl acetate, or polymers or copolymers of vinyl naphthalene and acenaphthylene may be used and the dispersion may contain additional polymer or copolymer dispersions such as polyvinyl acetate and chloride, or a vinyl-chloride-ethyl acrylate copolymer. Fillers include pigments and non-pigments, e.g. ground vulcanized rubber, asbestos, fine sand, barytes, coconut shell granules, or flour, crushed stone or carbon black.  Plasticizers, e.g. dibutyl phthalate, stabilizing agents, e.g. ammoniated casein, thickening and anti-frothing agents and vulcanizing agents may also be present.  The dispersions may be applied to form a single layer, or as a priming layer, on or at least one main coating with upper coatings of the same or different compositions.  The coatings have improved water resistance and adherence to the base.ALSO:Floor coverings are formed by applying an aqueous dispersion of a polymer or copolymer of an ethylenically unsaturated aromatic hydrocarbon containing at least 50% by weight based on the total solids, of a filler, and allowing the water to evaporate. Polystyrene, copolymers of styrene with butadiene, acrylonitrile or vinyl acetate, or polymers or copolymers of vinyl naphthalene and acenaphthylene may be used, and the dispersion may contain additional polymer or copolymer dispersions such as polyvinyl acetate and chloride, or a vinyl chlorideethyl acrylate copolymer.  Fillers include pigments and non-pigments, e.g. ground vulcanized rubber, asbestos, fine sand, barytes, coconut shell granules or flour, crushed stone or carbon black. Plasticizers, e.g. dibutyl phthalate, stabilizing agents, e.g. ammoniated casein, thickening and antifrothing agents and vulcanizing agents may also be present.  The dispersions may be applied to form a single layer, or as a priming, or at least one main coating with upper coatings of the same or differing compositions.  The coatings have improved water resistance and adherence to the base.
Patent GB-1129942-A (GB)
Title: Diffusion pump
IPC: F04F9/00
Filed: 1967-04-24
Abstract: 1,129,942. Diffusion pumps. TOKYO SHIBAURA ELECTRIC CO. Ltd. April 24, 1967 [April 28, 1966], No.18751/67. Heading F1E. In a diffusion pump in which vapour issuing from jet nozzles 5, 5<SP>1</SP> compresses gas molecules from the evacuated vessel, the gas molecules being evacuated by an auxiliary pump and the pump fluid vapour being cooled and liquefied for return to the boilers, an annular heater 11, 11<SP>1</SP> is arranged around the periphery of each boiler so that the central zone of each heater is at or about the same level as the pump fluid. Passage 13 leads to the auxiliary pump and passage 14 is an inlet or outlet for the cooling jacket 3. The lower boiler may have a flat or spherically raised bottom 16 and may have a cooling jacket. Pump fluid flows downwards along jacket 4 into the upper boiler 2<SP>1</SP> and overflows via passage 8 into the lower boiler 2. Fluid is boiled with a self-generated rotary motion which prevents eruptive boiling.
Patent GB-252931-A (GB)
Title: Improvements in bunsen burners
IPC: F23D14/06
Filed: 1925-07-23
Abstract: 252,931. Wiatt, J. P. July 23, 1925. Perforated-tube and like multiple - jet burners. - In a ring burner in which the orifices are arranged in two or more concentric circles, the orifices 9 in a circle nearer the central opening of the ring are smaller than the orifices 8 in a circle further from the opening. An example of the diameter of the orifices 8, 9, is given.
Patent GB-1109523-A (GB)
Title: Process and apparatus for the production of ketenes and anhydrides
IPC: B01J19/24
Filed: 1965-05-04
Abstract: Ketenes are prepared by passing a ketenizable substance (as defined in the Specification) in two streams A and B in parallel first through a preheating zone 18, then through a super-heating zone 16, passing the superheated streams through separate pyrolysing zones 14 and 12, and finally uniting the two streams, said streams being passed through the pre- and super-heating zones along similar interwinding spiral paths 38, 36 and 48, 50. Further detail of these spiral paths is in Fig. 4 (not reproduced).  The ketene produced may be passed on through a condenser to a reaction chamber containing an aliphatic acid whereby acid anhydrides are produced. This reaction may be controlled by a differntial vapour pressure transmitter which regulates automatically the feed of the acid (see Fig. 3, not reproduced). The pyrolysis of <PICT:1109523/C2/1> acetic acid to ketene, and its further reaction with acetic acid to give acetic anhydride is exemplified.  Other ketenizable substances are acetone (yielding ketene); ethyl acetate (yielding ketene and ethanol); propionic acid (yielding methyl ketene CH3CH=C=O); and acetic anhydride (yielding ketene and acetic acid).
Patent GB-1060693-A (GB)
Title: Process for the preparation of polyester for slideable film
IPC: C08G63/85
Filed: 1964-05-06
Abstract: A film-forming polyester is prepared by interacting a dicarboxylic acid, a hydroxy-carboxylic acid or an ester-forming derivative of either with a diol in the presence of a zinc compound, a titanium compound and an alkaline earth metal compound as catalysts.  The product may be a homo- or copolymer.  70% of it may be ethylene terephthalate units derived from ethylene glycol and terephthalic acid or dimethyl terephthalate.  Other dicarboxylic acids specified are oxalic, adipic, sebacic, azelaic, isophthalic, phthalic, naphthalene-2,6-dicarboxylic, diphenyl dicarboxylic, cyclobutane-1,2-dicarboxylic, <FORM:1060693/C3/1> sodium isophthalic acid 5-sulphonate and methyl isophthalic acid 5-sulphonate.  Other diols specified are: di- and polyethylene glycol, propylene glycol, butylene glycol, ethylene thioglycol, p-xylylene glycol, 1,4-di(hydroxymethyl) cyclohexane, bisphenol-A, and 2,2-bis-(p-hydroxyethoxyphenyl) propane. Hydroxyacids specified are: p-hydroxybenzoic, vallinic, p-hydroxyethoxy-benzoic and its m-chloroderivative, p - hydroxymethyl - benzoic and glycolic acid. Other acids and alcohols which may be used are trimellitic and pyromellitic acids and glycerol and pentaerythritol. Polyesterification may be preceded by an esterinterchange reaction and may be continuous. All the catalysts may be added prior to the esterinterchange reaction or some may be added prior to or during the polycondensation.  In the latter case a phosphorus compound may also be added. The amounts of catalyst welded may be: Zn compound: 0.005-0.1%, Ti compound: 0.005-0.2% and alkaline earth metal compound: 0.01-0.4%.  Zinc compounds specified are zinc oxide, zinc chloride, the zinc salt of 2-mercaptobenzothiazole, zinc acetate, caproate, adipate, benzoate, carbonate and borate. Titanium compounds specified are aryl titanates, aralkyl titanates, acyl titanates, aloyl titanates, titanium trichloride, ammonium salts of titanic acid, alkali metal titanates, alkaline earth metal titanates, tetramethyl titanate, tetraethyl titanate, methyl triphenyltitanate, dipropyl dibenzyl titanate, dibutyl di-(hydroxyethyl) titanate, diisopropoxytitanium acetate dibutoxytitanium benzoate, tetrabutyl titanate and tetrastearyl titanate.  Alkaline earth compounds specified are the carboxylates, hydrates, oxides and aluminates of Ca, Sr and Ba, e.g. calcium acetate.  Polymerization may be above or below the melting point of the polyester.  In Example (9) a phosphorus acid was added to the reaction mixture.
Patent GB-1456475-A (GB)
Title: Enhanced stability water-washable penetrant composition and  process therefor
IPC: G01N21/91
Filed: 1975-05-06
Abstract: 1456475 Penetrant inspection composition J R ALBURGER 6 May 1975 [24 June 1974] 18901/75 Heading G1B A water-washable penetrant testing composition comprises in weight percentages 30% to 99À8% of a low solubility (0À01% to 3% in water) solvent liquid, 0À2% to 30% indicator dye, zero to 40% solvent coupler, the low solubility solvent liquid being at least one of 2-ethylbutanol, 2-ethylhexanol, iso-octanol, iso-decanol, decyl alcohol, 2, 6, 8-trimethyl-4-nonanol, isopropyl acetate, butyl acetate, isobutyl acetate, primary amyl acetate, methyl amyl acetate, phenyl acetate, ethylhexyl acetate, ethylene glycol monobutylether acetate, glyceryl triacetate, allylidene di-acetate, methyl allylidene diacetate, ethyl acetoacetate, methyl vinyl acetate, diethyl succinate, 2-ethyl-1, 3-hexanediol, methyl isobutyl ketone, methyl propyl ketone, isophorone, mesityl oxide, methyl-n-amyl ketone, methyl isoamyl ketone, ethyl butyl ketone, di-isobutyl ketone, 1-pentanol, 2-methyl-1-butanol, 3-methyl-1-butanol, amyl alcohol, di-isobutyl carbinol, isobutyl heptyl ketone, methylisobutyl carbinol, propyl acetate, styrene oxide, polypropylene glycol (mol. wt. 1025), diethylene glycol monobutyl ether acetate, di-(2-ethylhexyl)-adipate, triethylene glycol di-(2-ethylbutyrate), triethylene glycol di-(2-ethylhexoate), polyethylene glycol di-(2-ethylhexoate), dimethyl phthalate, dibutyl phthalate, dioctyl phthalate, diisobutyl phthalate, n-octyl, n-decyl phthalate, n-hexyl, n-decyl phthalate, di-(n-hexyl) phthalate, di-(2-ethylhexyl) tetrahydrophthalate, aliphatic mineral oils, lowsolubility polyoxyalkylene glycols, low-solubility mono and diethers of polyoxyalkylene glycols, the solvent coupler being at least one of methanol, ethanol, n-butanol, isopropanol, 1-propanol, 2-butanol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, butoxytriglycol, methoxytriglycol, ethoxytriglycol, 1-butoxyethoxy-2-propanol.
Patent GB-1414685-A (GB)
Title: Production of soluble alkali metal silicates
IPC: C01B33/32
Filed: 1973-04-19
Abstract: 1414685 Soluble alkali metal silicates DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT 19 April 1973 [21 April 1972] 18951/73 Heading C1A Soluble alkali metal silicate is prepared by heating at boiling point for about 90 minutes a fluorine containing waste silicon dioxide with a fluorine content of less than 10% in the dry substance, a BET surface area of less than 100 m.<SP>2</SP>/g. and a content of free water of less than 40% by weight with a quantity of concentrated alkali metal hydroxide solution in excess of that required to neutralize the fluorine content of the SiO 2  following which 1 to 15% by weight of calcium hydroxide based on the starting material is added to the hot suspension to precipitate fluoride and the suspension is heated for about 60 minutes to boiling point whereafter heating to boiling point is continued for about a further 3 hours with addition of concentrated alkali metal hydroxide solution following which the suspension is hot filtered. The starting material may be waste SiO 2  containing fluorine such as is obtained in the acid decomposition of crude phosphate in the production of phosphoric acid, phosphates and fertilizer and the product may be sodium silicate possessing a ratio of M 2 O : SiO 2  = 1 : > 3À3.
Patent GB-999373-A (GB)
Title: Ribbon feed
IPC: H04L17/30
Filed: 1962-03-23
Abstract: 999,373. Typewriters &C. S.C.M. CORPORATION. March 23, 1962 [March 30, 1961], No. 18999/64. Divided out of 999,371. Heading B6F. The ink-ribbon feed mechanism of a high-speed printer is actuated once in every two printing cycles by means of a control circuit which includes a bi-stable circuit which receives one control pulse per cycle and which triggers a driving circuit for the feed mechanism every alternate cycle. The driving circuit includes a monostable circuit which provides short energizing pulses for solenoid 64. Each time solenoid 64 is energized, shaft 258 is rotated by one step by means of a pawl and ratchet 252, 256, Fig. 4, and linkage 240, 244. The takeup spool is driven through gears 274, 278, while gears 276, 280 at the other end of shaft 258 are disengaged. When the ribbon supply is nearly exhausted, a feeler 318<SP>1</SP>, Fig. 4, located in a recess of the feeding spool, rises and rocks a pin 3281 into engagement with a worm 304. Further rotation of shaft 258 causes this shaft to be moved axially to engage gears 276, 280 and disengage gears 274, 278 so that the spool on spindle 288 becomes the take-up spool. A spring-biased pin 344, Fig. 3, engages one or other of grooves 346, 348 in shaft 258 in its two axial positions to ensure that shaft 258 remains in one or the other position until the direction of feed is charged automatically. Specification 999,372 also is referred to.
Patent GB-999375-A (GB)
Title: Multistage transistor amplifier
IPC: B41J33/514
Filed: 1962-03-23
Abstract: 999,375. Transistor switching circuits. S.C.M. CORPORATION. March 23, 1962 [March 30, 1961], No. 19001/64. Divided out of 999,371. Heading H3T. A solenoid-operating circuit includes a power transistor 406 and a driver transistor 408. Normally a positive potential, greater than the barrier potential of diode 420, is applied to the base of driver transistor 408, and both of transistors 406, 408 are non-conducting. This positive potential is derived from a monostable circuit comprising transistors 402, 404, of which transistor 402 is conducting in the stable state. A positive pulse on lead 400 triggers the monostable circuit and causes a negative potential to be applied to the base of driver transistor 408, whereupon both of transistors 406, 408 conduct and solenoid winding 89 is energized. The purpose of the monostable circuit is to provide a short operating pulse to energize solenoid 89 which actuates a print hammer, for example.
Patent GB-495691-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/74
Filed: 1938-06-27
Abstract: 495,691. Friction clutches. BORG & BECK CO., Ltd. June 27, 1938, No. 19006. Convention date, Feb. 23. [Class 80 (ii)] A baffle plate 24, for preventing access of oil or other foreign matter to the friction facings of a spring- engaged clutch, is secured to the pressure plate 15 by being held at its periphery between the ends of the springs 16 and their seatings on the plate 15. One end of each spring engages in a depression 17 in the cover-plate 18, while the other end abuts against a series of lugs 19 on the plate 15 and is centred by a central lug 21 and encircling lugs 20. Ears 25 projecting from the periphery of the plate 24 engage between one side only of the springs and one of some of the series of lugs 19. Each ear may be formed with an embossed radial channel 26 to receive the lug, so as to locate the plate 24 circumferentially. Alternatively, or in addition to the channels 26, the plate 24 may have pairs of spaced fingers 27 engaging the slanting sides of a lug 28 on the plate 15. The plate 24 is piloted in the plate 15 by a flanged rim portion 29, or the length of the channels 26 may be such that the ends engage the ends of the lugs 19. The plate 24 is formed with radial strengthening ribs 31.
Patent GB-1174800-A (GB)
Title: Fluid Flow Regulator
Inventor: CASWELL ARTHUR EDWARD
IPC: G05D7/01
Filed: 1967-04-26
Abstract: 1,174,800. Valves. DEFENCE, SECRETARY OF. 9 May, 1968 [26 April, 1967], No. 19115/67. Heading F2V. A fluid flow regulator comprises an inlet compartment A feeding a compartment C through an orifice O, and a valve V for exhausting compartment C to exhaust compartment 3 in response to movement of bellows Q, the interior of which is connected to compartment A. Compartment C feeds fluid to apparatus (not shown) which exhausts via balancing orifice S to compartment B. In a modification (Fig. 2, not shown) bellows Q is located in compartment B.