baber/WOPTO huggingface dataset:
Patent GB-1218255-A (GB)
Title: Process for the preparation of cross-linked amylopectin derivatives
Inventor: GOTLIEB KORNELIS FESTER
IPC: C08B35/00
Filed: 1968-04-11
Abstract: 1,218,255. Cross-linked amylopectin. COOPFRATIEVE VERKOOP-EN PRODUCTIEVERENIGING VAN AARDAPPELMEEL EN DERIVATEN "AVEBE" G.A. 11 April, 1968 [14 April, 1967], No. 17537/68. Heading C3U. A cold water insoluble material containing at least 90% amylopectin, obtained by precipitation from a solution, is cross-linked with a polyfunctional reagent and the particle size of the product subsequently reduced. An optional step is reaction with a monofunctional etherifying or esterifying reagent, e.g. vinyl acetate, dimethyl sulphate or acetic anhydride, before, during or after cross-linking. The amylopectin solution may be derived from corn, tapioca, potato or sago starch by fractionation using an aqueous solution of magnesium and/or sodium and/or ammonium sulphate. Cross-linking may be in an aqueous or organic medium, preferably so that the product retains cold water insolubility. In examples, cross-linking is achieved with POCl 3  or sodium trimetaphosphate; other reagents are listed. The products are useful in foodstuffs.
Patent GB-362893-A (GB)
Title: Improvements in automatic star delta starters for three phase electric motors
IPC: H02P1/32
Filed: 1930-06-06
Abstract: 362,893. Control of A.C. motors. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI, 91, Rue de l' Enseignement, Brussels. June 6, 1930, No. 17584. Convention date, June 10, 1929. Void [Published under Sect. 91 of the Acts]. [Class 38 (iii).] The starter comprises two electromagnetic contactors 1, 2, the first closes as a result of closing a pushbutton 5 and connects the motor M to the line and maintains itself over a normally closed stop pushbutton 6. The motor windings are connected in star over contacts of contactor 2 when this is deenergized. Contacts 3 are closed a time interval after contactor 1 has closed, a clockwork retarding device described in Specification 352,447 may be used for this purpose, and cause contactor 2 to change over the motor connections from star tc delta. The pushbuttons may be replaced by a simple " on " and " off " switch, the contactor 2 may be arranged with five movable and three fixed or three movable and five or six fixed contacts The coil of contactor 1 affords no-volt protection, and fuses F may be arranged so that they are in circuit for both star and delta connections or only for delta connections.
Patent GB-1343468-A (GB)
Title: Process for the production of unsaturated compounds
IPC: C07C29/17
Filed: 1971-05-27
Abstract: 1343468 Olefins from acetylenes SNAM PROGETTI SpA 27 May 1971 [29 May 1970] 17696/71 Heading C2C Compounds having acetylenic bonds are reduced to the corresponding ethylenically unsaturated compounds by reaction, in the presence of a Group VIII metal complex, with a compound HC(R)(R<SP>1</SP>)X, when X is -OH, -OR<SP>11</SP> or -OCOR<SP>11</SP>, and R, R<SP>1</SP> and R<SP>11</SP> are hydrocarbon radicals optionally substituted, which have no unsaturation other than that of an optional aromatic ring present.
Patent GB-937580-A (GB)
Title: Photoflash lamp
IPC: F21K5/08
Filed: 1962-05-08
Abstract: 937,580. Photoflash lamps. SYLVANIA ELECTRIC PRODUCTS Inc. May 8, 1962 [May 17, 1961], No. 17701/62. Class 9 (2). A photoflash lamp comprising a glass envelope 2 containing a combustion-supporting gas such as oxygen and actinic material such as shredded aluminium or zirconium foil 4 is provided with a protective lacquer coating 18 over which is a layer or film 20 of anti-static material. The lacquer may be cellulose acetate and the antistatic material may be diluted in isopropyl alcohol before application by dipping the bulbs as they emerge from the lacquer drying ovens.
Patent GB-1469707-A (GB)
Title: Tyre anti-skidding devices
IPC: B60C27/08
Filed: 1974-04-23
Abstract: 1469707 Anti-skid tyre attachments DETWILER CORP 23 April 1974 17729/74 Heading B7C [Also in Division F2] An anti-skid tyre attachment comprises spaced, parallel, flexible straps 26 or 26c connected at their ends by members 24, or 42. The straps each have a greater width than thickness, and the attachment is such that when in use and the tyre begins to skid the friction between a road or runway surface and an adjacent strap causes the central portion of that strap to twist (Fig. 8) to increase the frictional engagement between the surface and the tyre to assist in halting the skid. In the embodiment of Figs. 1 and 6, the straps, which are made of polyurethane or high molecular weight polyethylene, each have at least one reinforcing member 32, e.g. of nylon, fibreglass, polyester, polypropylene or cotton, and a plurality of teeth 31 embedded therein. The members 24 which may be steel cables or metal chains, and at least one of which includes a releasable fastening 25 are accommodated in bores 30 in the straps. Alternative straps (26a) (Figs. 9-11, not shown) are provided with grit or pulverized material (36), e.g. tungsten carbide, silicon carbide, aluminium oxide, aluminium silicate, boron carbide, or diamond dust, on their road contacting surfaces (33a); the teeth 31 being omitted. A further alternative strap (26b) (Figs. 12-14, not shown) has grit or pulverized material (37) over its whole length, and is provided with a reinforcing strip (32b) (Fig. 13, not shown) not extending as far as the bores. In the embodiment of Fig. 15, straps 26c which are made of polyurethane or rubber are attached to members 42, which are straps of cloth, metal or rubber, by clamps 45 which include two spaced plates connected by two screws 44 (Fig. 17) or rivets. Two pairs of holes 43 for receiving screws 44 are provided at the ends of each strap 26c to permit adjustment of the spacing between the members 42. Both members 42 have a releasably connected end. The surface of each strap 26c which in use engages the tyre tread is provided with grit, e.g. steel carbide particles.
Patent GB-776587-A (GB)
Title: Controlled surface hardening of heat treated metallic articles
Filed: 1955-06-20
Abstract: 776,587. Surface hardening metal articles. CATERPILLAR TRACTOR CO. June 20, 1955 [April 26, 1955], No. 17733/55. Class 72 The thickness of the hardened layer in the surface hardening of metallic article is controlled by subjecting the whole surface to a flow of quenching liquid which contains adjacent zones having different heat extracting properties. As shown, applied to track shoes, the shoes 15 after heating in a furnace 11 pass into quenching device 10 where they are subjected to a flow of quenching liquid over their entire surface, any excess liquid being removed by a scraper 28. The quenching device comprises a tank 31, containing a constant head of liquid, from which the liquid is fed to an elongated narrow orifice 38 defined by an adjustable .plate 37 and a body portion 32. The orifice is further divided into. zones by partitions normal to the opening. The shoes pass through an opening having a shape conforming to the shape of the shoe, the orifice forming the outer edge of the opening. Quench liquid flows out of the orifice over the shoe, the pressure, temperature, or volume of liquid' being controlled in each zone and dependent on the cross-section of the shoe passing the zone. Liquid may be prevented from flowing backwards by a jet of air issuing from a nozzle 66. Prior to entering the quenching chamber selected parts of the shoe e.g. bolt holes, may be subjected to cooling by jets of air through apertures in headers 76 and the lower surface of the shoe may be subjected to a quench before the upper .surface. The shoes may be fed through the device by a system of conveyer rollers driven by motors 13.
Patent GB-530137-A (GB)
Title: Improvements in pressing devices for knitting machines
IPC: D04B11/22
Filed: 1939-06-17
Abstract: 530,137. Knitting machines. ETABLISSEMENTS DELOSTAL FRERES. June 17, 1939, No. 17739. Convention date, Aug. 23, 1938. [Class 74 (ii)] Relates to improvements in pressers for straight bar knitting - machines, whereby fancy and anti-ravel knitted fabrics are obtained. Two superposed toothed presser plates 1, 2, one adapted to press even needles and the other adapted to press odd needles are slidably mounted on the sinker guide 5, and are moved to and from the needles by longitudinal reciprocation of a bar 11 having cam slots 9, 10 which engage pins 7, 7a, 8, 8a on the plates. Either (as shown), the plate 2, or both of the plates may thus be moved to the right, to press even (as shown) or odd or all needles. The bar 11 may be moved by ratchet means, or by the apparatus shown in Fig. 10 in which a rack 15 is vertically reciprocated by cams 12,34 and meshes with gear wheels 16, 17 keyed to shafts 16a, 17a, carrying sliding clutches. 21, 22 which selectively engage gear wheels 18, 19 meshing with a rack 20 secured to the bar 11. When even or odd needles are to be pressed the roller 14 rides on the cam 12, but when all needles are to be pressed the roller 14 is slid on to the cam 34 by a lever 35 operated from the selecting mechanism A.
Patent GB-353626-A (GB)
Title: Improvements in or relating to mealie shellers
IPC: A01F11/06
Filed: 1930-06-11
Abstract: 353,626. Shelling mealies. VILLIERS, L. V. DE, P.O. Box 206, Disselsrust, Bloemfontein, South Africa. June 11, 1930, No. 17909. Convention date, June 20, 1929. [Class 58.] Mealie cobs are fed by an elevator l into a hood 4 and over a guide-plate 14 into a shelling cage 5 against the side bars of which they are driven by rotary helical beaters 15. The grain drops through the bars on to an angular plate 16 that directs it clear of a second cage 19 into a hopper 17. The cobs and leaves tailing from the first cage are guided into the cage 19 and again beaten by rotary beaters, the grain falling directly into the hopper 17 and the leaves and stripped cobs being delivered into the outlet pipe 20 of a blower 40. The two cages are entirely enclosed by a casing 23 extended to form the hopper 17, this casing being connected to the inlet of the blower. The plates of the hopper are perforated and the air sucked in through these perforations carries away any remaining dust or light refuse. The grain is carried by an elevator 25 to an angular plate 26 down which it passes while air is drawn across it bv another connection to the inlet of the fan. The grain then falls into a revolving cylindrical sieve provided with perforations varying in size from one end to the other so that grading is accomplished. The graded grains are finally bagged from outlets 32. For travelling purposes the elevator 1 is carried on two bearers 34, 35 as shown in Fig. 1 ; it is lifted into working position by a rope 10 passing over a pulley 8 carried by a post 6 and is provided with studs fitting into slots 3 cut in the hood 4.
Patent GB-385330-A (GB)
Title: Process for the manufacture of ammonia
IPC: C01C1/04
Filed: 1931-06-20
Abstract: An oxide of silicon, boron, titanium, or vanadium is mixed with carbon and heated in a strong current of nitrogen free from oxygen at 1200-1500 DEG  C. and the resulting nitrogenous composition which may contain carbon, is decomposed in the hot by means of aqueous alkalis, alkaline earth hydroxides or acids or water vapour and carbon dioxide.  The conversion of the nitrogenous composition to ammonia is facilitated by adding thereto aluminium, zinc or iron in a pulverent condition for the purpose of generating nascent hydrogen during the decomposition.  The residue left after the production of ammonia may be replenished with carbon and returned to the process.  The nitrogenization step is preferably accompanied by stirring.  The Specification as open to inspection under Sect. 91 describes also a modification in which the free elements are employed instead of the oxides.  This subject-matter does not appear in the Specification as accepted.
Patent GB-584783-A (GB)
Title: Improvements in and relating to two-stroke internal combustion engines of the opposed piston type
IPC: F02B75/28
Filed: 1945-07-14
Abstract: 584,783. Reversible two - stroke engines. BRUSH ELECTRICAL ENGINEERING CO., Ltd., and DALE, C. B. M. July 14, 1945, No. 18043. [Class 7 (ii)] A reversible two-stroke engine with opposed pistons 2, 3, in which one piston is given a lead over the other to obtain the timing of ports 4, 5 shown in Fig. 2, has two crankshafts 6 and 7 connected by a train of helical gears 9, 10, 11 and 12. A lever 14 gives the gear 9 axial movement along the straight spline 13 thus giving the required angular displacement between the gears 9 and 10 necessary to maintain the same port timing when the engine is reversed.
Patent GB-1102179-A (GB)
Title: Gold electro-plating
IPC: C25D3/48
Filed: 1966-04-25
Abstract: Gold is electro-deposited from an aqueous solution of pH 4 to 6 containing 5 to 25 g/l com as a complex cyanide salt and a guanidine compound (R1R2) N - C(NH) - N(R3R4) where R1, R2, R3, R4 are the same or different and are hydrogen atoms or alkyl groups or three of them are hydrogen atoms and the fourth is - NH2, - (CH2)3 - CH(NH2)COOH, - CH2COOH, or - (CH2)4 - NH2 or form the cyclic compounds ethylene guanidine or ethylene biguanide.  Bright gold may be deposited from a bath containing 10 to 25 g/l Au and optionally formic acid at a temperature of 50 to 65 DEG  C. with a cathode current density of 0.1 to 0.5 amp/dm2, while a mirror-bright gold alloy containing 1 to 3% Ni may be deposited from a bath as above containing 0.5 to 10 g/l of a nickel salt and at least 200 g/l of a reducing organic acid, e.g. formic acid, at 55 to 65 DEG C. and a cathode current density of 1 to 3 amps/dm2.
Patent GB-698661-A (GB)
Title: Improvements in or relating to candy coating articles
IPC: A23G3/20
Filed: 1952-07-17
Abstract: Corn flakes &c. are coated with non-sticky sugar solution by spraying, the sugar containing about 3 to 6.5 per cent moisture and being heated to a temperature of about 320-350 DEG  F. under sufficient pressure to retain sufficient moisture so that the sugar remains in the liquid phase.  The pressure is at least about 35 to 75 lb. per square inch, the higher pressures being required for sugar with the higher moisture content.  Sugar with 4.5 per cent moisture would thus be heated to 335-345 DEG  F. under a pressure of at least 50-60 lb. per sq. inch.  A suitable syrup may be made by dissolving in 50 lb. of water, 100 lb. sucrose, 10 lb. corn syrup, 30 lb. of honey, 1/4 lb. of sodium acetate, 1/2 lb. salt and heating to 225 DEG F.  The syrup is then boiled down to a candy containing 4.5 per cent moisture until its boiling point reaches 290 DEG  F. at atmospheric pressure.  Then the syrup is pumped at 100 lb. pressure through a cooking coil maintained at 340 DEG  F. the coil terminating in a spray nozzle having holes of 1/16 inch diameter.  The spray is directed on to cor5flakes being tumbled in a revolving reel.  The cornflakes proceeding from the reel are deposited in a shallow layer on a travelling screen through which cold, dry air is blown.  They then pass to a vibrating screen to separate the flakes before packaging.
Patent GB-1385583-A (GB)
Title: Leader tapes
IPC: G11B5/74
Filed: 1972-04-19
Abstract: 1385583 Coated products SONY CORP 19 April 1972 [20 April 1971] 18139/72 Heading B2E A leader tape for a magnetic recording tape comprises a non-magnetic light transmission base, especially polyethylene terephthalate film, and a coating layer thereon comprising 100 parts by weight of a binder and at least 30 parts by weight of a pigment, the coating having a surface resistivity of less than 10<SP>12</SP> ohms/sq and the tape having a transmissivity of more than 20 per cent. The binder may be acrylic resin together with methoxymethylnylon, vinyl chloride vinyl acetate copolymer or polyvinylalcohol. The pigment may be one or more of zinc oxide, titanium oxide, calcium carbonate, zinc sulphide, silicon monoxide, antimony oxide, white lead, aluminium oxide, barium sulphate, lead sulphate, talc, clay, lithopone, white carbon black or tin oxide, especially tin oxide including antimony as impurity.
Patent GB-731641-A (GB)
Title: An improved take-up reel drive for film winding mechanism
IPC: G03B1/40
Filed: 1953-06-30
Abstract: 731,641. Kinematograph apparatus. HOAD, T. C. June 30, 1953, No. 18152/53. Class 97 (1). [Also in Groups XVI and XXIV] A take-up spool drive comprises a positivelydriven member of magnetically susceptible material and a magnetically susceptible member driving the spool shaft with a magnetic element between said members in contact with them and magnetically and frictionally coupling them. In the form shown a fixed journal 7 carried on a support 8 contains a sleeve 6 driven by a pulley 9 and belt 5. A shaft 13 passes through the sleeve and the spool 4 placed on it is driven from it by a key 23 and held thereon by magnets 20 embedded in a disc 19. The shaft 13 is partly driven by friction in the sleeve 6 which increases with the weight of the spooled film. Also secured to the shaft is a hub 15 having driving connection with a disc 14 through pins 15<SP>1</SP>. A non-magnetic disc 17 loosely mounted on the hub carries magnets 18 which attract the disc 14 and the pulley 9 to provide an additional driving torque to the shaft 13.
Patent GB-116848-A (GB)
Title: Improvements relating to the Illumination of Sights of Fire Arms.
Inventor: HALL EDWARD JOHN
IPC: F41G1/34
Filed: 1917-12-08
Abstract: 116,848. Hall, E. J. Dec. 8, 1917. Sights.-An illuminated sight comprises a transparent plate, preferably a lens formed with, or having attached thereto, a projection which is illuminated by an electric lamp. In the foresight shown, a lens d has a projection e forming the sighting-point adapted to be illuminated by a ray from an electric lamp in a casing f. The lamp circuit is closed when the trigger is pressed. The backsight may be similarly formed and illuminated.
Patent GB-838212-A (GB)
Title: Improvements in roller mountings for conveyors
Inventor: PARNABY ROBERT LANGDALE
IPC: B65G39/10
Filed: 1955-06-24
Abstract: 838,212. Idler roller mountings. HANMADE CONVEYOR CO. Ltd. June 25, 1956 [June 24, 1955], No. 18265/55. Class 78 (1). The spindle 2 of roller 1 is mounted in bracket 4 which is releasably secured to conveyer frame 9, 10 by locking member 7 held by nut and bolt 5, 6. Bracket 4 may have several alternative holes for engagement with the spindle 2
Patent GB-629339-A (GB)
Title: Impeller and governor for same
IPC: F04D29/36
Filed: 1947-07-10
Abstract: 629,339. Screw fans. MADER, E. A., and SPARGO, J. July 10, 1947, No. 18322. Convention date, May 3, 1943. [Class 110(i)] The fan blades are pivoted on rods which extend between a hub and a sheet metal annulus, means being provided to pivot the blades from a position in which they close the opening between the hub and the annulus to a position in which they impel air through the opening. Five rods 5 ex. tend between a hub 4 and a ring 6 and each carry a pivoted blade 8. In the closed position, the blades slightly overlap each other. When the impeller is running, two weighted arms 12 swing outwards under centrifugal force and act through links 15 to move a disc 13 against the action of a spring 14. Pins 16 carried by the disc 13 move the blades into the impelling position. Each pin 16 projects loosely through a hole in the corresponding blade and carries two collars 17 having coned surfaces which engage opposite faces of the blades to limit its pivotal movement. To reduce leakage past the periphery of the impeller, the ring 6 rotates with small clearance between stationary plates 21 and 23.
Patent GB-146399-A (GB)
Title: Improvements in sewing machine presser-foot mechanism
IPC: D05B29/00
Filed: 1920-07-02
Abstract: 146,399. Reece Shoe Machinery Co., (Assignees of Schoenky, A. R.). Oct. 5,1915, [Convention date]. Sewing-machines; presser-bars with periodic control; presser-bar lifting devices.-In an outsole sewing-machine in which the presser-foot is locked in engagement with the work once in each stitch-cycle, a pair of mutually adjacent treadles are arranged to be depressed by one movement of the operator's foot first to unlock and then to lift the presser-foot from the work. The presserfoot 22 has a rear arm 29, to which is connected through a spring 28 a second arm 27 carrying. rack teeth 26, which are adapted to be engaged by a dog 25 carried by the cam-actuated lever 34 and normally held against the teeth by a spring 32. By this means the presser-foot is depressed once in each stitch cycle, a dog 31 pressed by a spring 33 into contact with rack teeth 30 on the arm 29 serving to look the presser-foot in its lowest position. Depression of the lever 34 causes its heel to contact with the dog 31 and disengage it from the teeth 30, whereby the presser-foot is released to permit the work to be fed. To release the presser-foot manually, a bell-crank lever 37 pivoted at 38 is provided, the vertical arm 39 of which is adapted to contact with pins 40, 41 on the dogs 25, 31 respectively and disengage them from their rack teeth when the lever 37 is turned clockwise by pulling down a rod 42. In order to raise the presser-foot manually, the arm 29 is connected by a link 44 to an arm 45 mounted on a shaft 46 and carrying a lug through which passes a rod 43. The rod 42 is connected to one end of a lever 52, Fig. 2, pivoted at 53 to the frame of the machine, the other end of which lever is connected by a short link 51 to a treadle 49 pivoted at 50 in the machine base. The treadles are normally held with the foot-pieces 47, 48 in raised position by springs 56, 57 connected to the machine frame, and the arrangement is such that the foot-piece 47 is higher than the foot-piece 48, whereby the first part of the downward movement of the operator's foot actuates the treadle 49 to unlock the presser-foot, the continued movement actuating the treadle 54 to lift the presser-foot from the work.