baber/WOPTO huggingface dataset:
Patent GB-838179-A (GB)
Title: Improvements in and relating to vegetable and fruit preparing machines
IPC: B26D3/18
Filed: 1958-03-17
Abstract: 838,179. Chipping machines. KISAG A.G. March 17, 1958 [March 16, 1957], No. 8506/58. Class 5(1). The pusher K which forces vegetables through crossed cutters i is easily detachable from the cross-head g of the reciprocated connecting rod f to the crank pin e. The pusher k which has ejecting fingers h is supported in lateral guides m. The cutting plate i is held in a slot by a plate t rotatable on the casing.
Patent GB-664279-A (GB)
Title: Improvements in or relating to electrical null-point indicating devices
IPC: G01R17/00
Filed: 1949-03-30
Abstract: 664,279. Bridge circuits; voltage measurements. CAMBRIDGE INSTRUMENT CO., Ltd., and PARNUM, D. H. March 23, 1950 [March 30, 1949], No. 8598/49. Class 37. A null-point indicator for a Wheatstone bridge, potentiometer &c. comprises two differentlycoloured electric lamps or flash tubes adapted to be actuated by the out-of-balance current. As shown in Fig. 1, an interrupter 2 converts the D.C. signal from a circuit 3 to 50 c/s. A.C., which is passed through a two-stage amplifier 4 to a phase-sensitive output stage 5 which operates one of two small lamps 6 according to the signal polarity. The stage 5 comprises a double triode valve, the anode voltage being supplied from two windings 12, 13 on a mains transformer 14. The cathodes are connected to a tapping on a potential divider. 15 across the H.T. supply, so as to be about 10 volts above earth. The lamps 6 are connected to secondary windings 16 of two step-down transformers, the primary windings 17 of which are in the anode circuits. With no signal the grid bias is adjusted until both lamps 6 glow faintly. When an A.C. signal which is in phase with the anode voltage on one of the anodes is applied to the common grids of the valve 5 these grids become less negative during the conducting half-cycle of one anode and more anode current flows to this anode and the associated lamp 6 becomes brighter. Thus the polarity of the D.C. signal is indicated by which lamp becomes brighter. In a modification, Fig. 2, the out-ofbalance current is applied to an amplifier through a condenser and tapping key. This is a multi-contact switch which first switches on the bridge current by the contact S1, and then closes the contact S2. On release these operations are reversed and finally the condenser is short-circuited by the contact S3. The signal voltage is thus applied as a pulse to the amplifier through a step-up transformer a. The output of the amplifier is applied through a blocking condenser C1 to a phase-splitting transformer d, the windings of which are so connected that if a positive pulse is applied to one winding a negative pulse is generated by the other. These two pulses are applied to flash tubes e, f, which produce light flashes. If the signal voltage has caused a positive pulse to appear at the point A, this has no effect on its associated tube e, but the simultaneous negative pulse at B causes the tube f to flash. If the polarity of the signal voltage is reversed, a negative pulse appears at A and the other tube f flashes. In a further modification the tubes e, f are replaced by thyratrons which cause lamps in their anode circuits to flash.
Patent GB-1500838-A (GB)
Title: Drive system for the cutting mechanism of a combine harvester
IPC: A01D34/30
Filed: 1976-03-04
Abstract: 1500838 Drive for cutter assembly KOMBINAT FORTSCHRITT LANDMASCHINEN NEUSTADT IN SACHSEN VEB 4 March 1976 [7 March 1975] 08653/76 Heading A1F [Also in Division F2] The cutting apparatus 8, 9, 10 of a combine harvester is driven by a shaft 14 carrying reversible gears 13 so that it may be thrown into reverse to loosen any blockage in the region leading to the inlet channel 4. The shaft 14 is itself driven from a shaft 1 via a V-belt 11 and pulley 12. The gearing 13, Fig. 2, comprises a gear 18 driven by pulley 12, and meshing with a spur wheel 20, and hence, in the forward running position, with a gear 21 slidably mounted on, and rotationally fast with, a hollow shaft 16 releasably keyed at 17 to the shaft 14. On switching by a member 22 to the reverse running position shown in dotted lines, the gear 21 is then driven through gears 23, 25 and a shaft 19, as well as through the wheel 20.
Patent GB-545441-A (GB)
Title: Improvements relating to the catalytic alkylation of hydrocarbons
IPC: C07C2/62
Filed: 1940-05-14
Abstract: 545,441. Catalytic agents. STANDARD OIL DEVELOPMENT CO. May 14, 1940, No. 8664. Convention date, Aug. 12, 1939. [Class 1(i)] [Also in Group IV] A solution of boron fluoride in orthophosphoric acid is used as catalyst in the alkylation of isoparaffins with mono-olefines to produce saturated hydrocarbons suitable as motor fuels. The catalyst may be prepared by bubbling boron fluoride through an aqueous solution of orthophosphoric acid or by adding boron fluoride to an aqueous solution of orthophosphoric acid to which phosphorus pentoxide has been added to combine with the water present; to maintain the catalyst strength, boron fluoride in small amounts may be admixed with the feed stock or added to the catalyst solution. Specification 486,355 is referred to.
Patent GB-107234-A (GB)
Title: Improvements in or relating to Sleeve Protectors and the like.
Inventor: VENNING JAMES LEWIS
IPC: A41B7/12
Filed: 1916-06-20
Abstract: 107,234. Venning, J. L. June 26, 1916 Sleeve protectors.-The adjoining edges B, C of a sleeve protector A, made of material such as American cloth, are provided with eyelets F through which a length of round elastic G is laced so as to secure the edges permanently together. In a modified form, the edges are permanently connected together by a continuous strip of elastic or by several short pieces of elastic.
Patent GB-1494450-A (GB)
Title: Process for the addition of additives in thermoplastics
IPC: C08L51/00
Filed: 1975-03-03
Abstract: 1494450 Incorporating additives in thermoplastics STAMICARBON BV 3 March 1975 [5 March 1974] 8691/75 Heading C3P One or more additives having a melting point of not more than 250 C. and comprising one or more salts of aliphatic carboxylic acids having at least 10 carbon atoms and a Group I, II or III metal, are incorporated in thermoplastics by mixing with a mineral oil and with an amide of an aliphatic carboxylic acid having at least 10 carbon atoms, said mineral oil being in a proportion of at least 10% by weight of the carboxylic acid salt, and adding the resulting composition in a molten state to the dissolved or molten thermoplastics. Minor proportions of non-melting additives may also be incorporated. The thermoplastics may be a polyolefin, preferably polyethylene obtained in solution. Examples describe additive compositions comprising white oil and (1) calcium stearate and oleamide and (2) calcium stearate, n-octadecyl 2-(4-hydroxy-3,5-di-t.butylphenyl) propionate and oleamide.
Patent GB-318088-A (GB)
Title: Manufacture of cellulose derivatives and solutions of cellulose
IPC: C08B9/00
Filed: 1928-03-22
Abstract: 318,088. Lilienfeld, L. March 22, 1928. Cellulose carboxylates, nitrates. xanthates, and ethers; ammoniacal copper cellulose and other cellulose solutions; preparatory treatment of cellulose.-As a starting material for the manufacture of cellulose esters, ethers, viscose, and other solutions of cellulose, there is employed a cellulose that has been subjected to a preliminary treatment with alkali and carbon disulphide under such conditions that at least a substantial part of the product is insoluble in water. Viscose made from such pretreated material has a viscosity higher than that prepared from untreated cellulose, and the artificial fibres, films, dressings &c. made therefrom, show an increased strength both wet and dry; in the case of cellulose nitrates, nitration proceeds more smoothly, and products of higher stability and improved solubility are obtained, the solutions being of lighter colour; similar advantages occur in the case of cellulose acetates, formates, and propionates, and there is an added advantage that by the pretreatment wood cellulose can be used as the initial raw material; in the preparation of cellulose ethers, etherification proceeds more easily and more completely, and the products give better solutions, while the films, fibres, plastic masses &c. made therefrom, are of improved flexibility and have a greater resistance to heat; products of improved strength are obtained by the use of solutions of -he pretreated cellulose in ammoniacal copper solutions, or in alkali solutions either at low temperature or in the presence of ammonia derivatives of carbonic acid or of sulphur analogues of carbonic acid, or in strong bases such as quaternary bases, or guanidine, alone or mixed with alkali. The pretreatment may be carried out, for example, by first converting the cellulose into alkali cellulose, or the cellulose mav be treated with a mixture of alkali and carbon disulphide, preferably in the form of an emulsion, or the cellulose may first be treated with carbon disulphide and the alkali then added, or vice versa; when alkali cellulose is first formed, this may be prepared with a caustic alkali solution of a strength less than the normal; the proportion of carbon disulphide used may be less than, equal to, or greater than that usually employed in the manufacture of viscose, the duration of the reaction being limited when larger proportions are employed. The pretreatment may in some cases constitute a step in the manufacture of the cellulose. After the pretreatment the material is preferably washed, although this washing may be omitted if the presence of alkali is permissible in the next stage of the process, the washing may be carried out with water, a washing with dilute alkali being preferably introduced as a preliminary step; and the pretreated material may be neutralized or even rendered acid before washing. After washing, the material may be dried. Specifications 0035/13 and 269,531 are referred to.
Patent GB-758046-A (GB)
Title: Method and apparatus for manufacturing rotary cutting tools
IPC: B21H3/00
Filed: 1954-03-25
Abstract: 758,046. Rolling. ERDELYI, F. March 25, 1954 [April 10, 1953], No. 8805/54. Classes 83 (2) and 83 (4). In a method of rolling longitudinally or helically grooved bar for twist drills, reamers, taps &c. round bar heated to forging temperature is rolled to final shape by a plurality of driven rolls disposed around the bar and with their axes in a plane at right angles to the bar or at the required helical angle. Bar material 1, Fig. 1, heated in stages by electric resistance heating through contact jaws 7-10 is severed by a cutter 14 in such a manner that an unheated shank portion 15 projects beyond the rolls 12, 13 and is not rolled. The jaws 7-10 are cooled and a gas for preventing oxidation is supplied into the housing 3 surrounding the work. The rolls for rolling a twist drill may be arranged in pairs 17, 18, Fig. 2, the rolls 17 having projections 20 of gradually increasing radius to obtain grooves of varying depth and the rolls 18 being shaped to form the cutting edges 19. In alternative forms two or more pairs of rolls have parts of the grooves and cutting edges on each and in one example a tap is simultaneously formed with cutting threads 39, Fig. 5, by a set of three rolls 38 co-operating with a set of three groove-forming rolls 36. The final shapes may be formed in successive stages by sets of rolls arranged in line and the helical twist may be imparted by the final set of rolls only. In making tapered reamers 42, Fig. 6, the work may be rolled between pairs of rolls, the segments e producing the tapered portion 44 and the segments f guiding the stem 43. In another example all the rolls 50, Fig. 8, are mounted on a common housing 49 having a central bore 51 for the work. Each roll is driven through bevel gears 55, 56 from pinions 58, 59 on the back of the housing which are driven from a belt pulley 66. The housing is mounted in bearings 69 and is rotated by the same drive at the speed equivalent to the helix angle. In a modification a portion of each roll 77, Fig. 9, may be formed as a gear-wheel 76 which is driven from a pinion 75, the roll being mounted on two arms 78 projecting from the housing 72.
Patent GB-424034-A (GB)
Title: Improvements in scaffolding clamps
IPC: E04G7/08
Filed: 1934-03-22
Abstract: 424,034. Scaffold clamps. BURTON, S. F., 49, Sandon Road, Edgbaston, Birming- ham, and LOWE, A., Haden Cross, Halesowen Road, Old Hill, Staffordshire. March 22, 1934, No. 8959. [Class 20 (ii)] A scaffold-clamp of the type in which a U-shaped member embraces one pole and a hinged cap-member embraces the other pole, screwed means being provided to clamp the parts together, has the main U-shaped member provided with two intersecting grooves disposed at right-angles for selective engagement with scaffold members. The U-shaped member 10 is provided with intersecting grooves 11, 12, and with upstanding lugs 13, 14, on opposite sides and ends. The cap-member 15 is hinged to one of the lugs at 18 while the other lug is provided with a pivoted bolt 21 which engages a slot in a lug 19 on the cap, a nut 23 on the bolt effecting clamping pressure on the cap. In a modification, Fig. 4, a cross-grooved packing-piece 30 is hinged to the body member on the same axis as the cap-piece and screws 27 are provided whereby the U-shaped member is secured to an upright scaffold member. Stops 28, 29 are provided to limit the opening movement of the cap-piece. An alternative screw means to effect clamping by the cappieces consists in the provision of a loose bolt in the lug of the cap-piece, adapted to engage a screwed lug on the main clamping member.
Patent GB-651292-A (GB)
Title: Improved end shackle
IPC: F16G15/06
Filed: 1948-03-30
Abstract: 651,292. Shackles ; cotters. SKOLD, K. W. March 30, 1948, No. 8999. Convention date, March 28, 1947..[Classes 24 and 89(ii)] An anchor and/or end shackle, having a round transversely extending bolt inserted, through the shanks of the shackle yoke, comprises a connection piece articulately mounted on the bolt and provided with an eye, the cross-sectional diameter of the metal forming said eye being the same or approximately the same as the links of a chain for which it is intended. A bolt 9, Fig. 2, carrying the connection piece 10, passes through holes 7 and 8 in the shank ends 5 and 6 of the yoke 1, and may be locked by riveting at the ends or by a cylindrical cotter pin 17 extending through the connection piece 10 and engaging an annular groove) 18 on the bolt 9. The cotter pin is slightly bent when not inserted, and is consequently self-locking in the inserted' position. The connection piece 10 is provided with an eye 19, located in the same plane as the bolt 9, into which the chain link 20 may be forged, or the link may be connected to the eye by means of a connection shackle 22 of the type described in Specification 617,101. In a modified construction, (Figs 3, 4), the eye 19 is located in a plane at right angles to the bolt 9 and the connection piece has no portions located outside the shank ends of the yoke. The bolt 9 is secured by a self-locking cylindrical cotter pin 17 extending through one shank end and the bolt, the head of which has a guide stud 21 secured thereto to ensure correct alignment of the holes for receiving the cotter pin.
Patent GB-959060-A (GB)
Title: Improvements in or relating to fastener devices
IPC: E05B65/52
Filed: 1962-03-08
Abstract: 959,060. Key locks; latch fastenings. J. ROGERS. (A. Levine, M. Povill, M. Leventhal, A. L. Salkin, and A. I. Edelman [trading as Presto Lock Co.]). March 8, 1962, No. 9024/62. Heading E2A. A fastener device for releasably holding two separable parts of a luggage case or other container in closed condition consists of a bolt mechanism 12 and a catch means 14 engageable thereby the bolt mechanism comprising body member 16 adapted to be affixed to one container part the body member having side walls 21, a bolt member slidably mounted within the body member for longitudinal movement between the side walls 21, one side wall having an entranceway opening 30 relative to which the bolt member is movable, a cover member to close the body member, means to hingedly connect the cover member by one end to a corresponding end of the body member, a link member 38 pivotally connected by one end to the bolt member and by its opposite end adjacent the free end portion of the cover member, the catch means being adapted to be affixed to the other container part adjacent the side wall of the body member having the entranceway opening therein, and said catch means having a projecting catch tongue 51 adapted to enter the body member through the entranceway opening thereof in the closed condition of the container parts, upswinging movement of the cover member being operative to cause the link member to retract the bolt member from catch tongue engaging position, and downswinging movement of the cover member being operative to cause the link member to move said bolt member into catch tongue engaging position. In the fastening position of the cover member the pivotal connection between the link member and the bolt member is beyond a dead centre position so that the bolt member cannot retract inadvertently. Movement of the bolt member in the retracting direction is assisted by a spring 43. The tongue 13 and the bolt member are both provided with cam edges 52, 53 which co-operate to draw the tongue inwardly into the body member and thereby cause the two parts of the container to be drawn tightly together. To retain the cover member in the fastening position a sliding bolt 55 is provided in the cover member; this is engageable with a notch 65 in a locking boss 64 on the body member when it is moved by means of a key the key engages between projections 57 on the bolt. The bolt 55 is provided with positioning notches 58 which co-operate with a stop nosing 59 under the urge of a spring arm 60 of the bolt.
Patent GB-137202-A (GB)
Title: Improvements relating to thread guides of spinning, twisting and like frames
IPC: D01H13/04
Filed: 1919-04-10
Abstract: 137,202. Pugh, Ltd., C. H., and Bull, G. F. April 10, 1919. Thread-guides are adjusted in the lappets of spinning, twisting, and like frames by means of worms 6 which engage teeth 5 formed on the shanks of the guides, and are maintained in their adjusted position by means of springs 8 which exert a lateral pressure on the worms. The springs are C-shaped and form part of a sheetmetal housing riveted to the Jappet, and embrace the reduced ends of the worm and the shank of the guide. The worm may be mounted in a recess in a block 13, Fig. 11, and engaged by a blade spring 8. The worm is rotated by a key 12 for the purpose of adjustment. In the Provisional Specification, it is stated that the worm is housed in an open box riveted to the lappet, and a bow spring is arranged between the worm and the side of the box.
Patent GB-278261-A (GB)
Title: An improved belt-shifter
IPC: F16H7/22
Filed: 1927-04-02
Abstract: 278,261. Schumachers, A., and Blankertz, P., (trading as Rheydter Maschinen & Spindelfabrik Blankertz & Schumachers). April 2, 1927. Operating belt - forks; variable-speed belt gearing.-In beltshifting means for step-pulley variablespeed gearing and other belt gearing in ring spinning- machines, lathes, &c. a broad pulley d engaging the, belt face is rocked about an axis vertical to said face to guide the belt in the required direction by a worm-wheel segment i secured to the rock-shaft h carrying forked arms g, in which the pulley is pivoted, and engaged by a worm k rotated by a knob l. The pulley may be carried on weighted levers pivoted to the forked arms for maintaining belt tension. With belts not liable to slip, three steps may be employed on the cone pulley b.
Patent GB-750857-A (GB)
Title: Apparatus for preparing dry feed
IPC: A23N17/00
Filed: 1954-03-29
Abstract: 750,857. Cutting up food. WEISS, F., and WEISS, U., [trading as WEISS GEB. KUNSTSTOFF, PRESS - UND SPRITZTEILE, MASCHINENBAU]. March 29, 1954 [March 28, 1953], No. 9099/54. Class 5 (1). Dry food, e.g. for cattle, is broken up by cutters 11 and rotated shaft 2 inside a reversely rotated drum 1 loose on the shaft 2 the relative rotational speed of which is adjusted suitably to carry up the food and allow it to fall down on to the cutters. The speed adjustment of the drum comprises a slipping belt drive 8 tightened to the required degree by jockey roller 9 on a hand lever 10 secured in position by ratchetlike teeth. The drum may also be swung round by a handle 4. The cutters 11 are arranged in a helix on the shaft 2 being secured in diametrical holes in the shaft. The drum may have a roughened surface or small shelves to carry up the food. Splashplates 13 are provided at each end if liquid is used. The shaft extension 2a may be used to drive other machinery. The drum &c. may be inclined to effect the feed of the food.
Patent GB-852473-A (GB)
Title: Improvements in or relating to radio receivers, particularly radio compasses and thelike
IPC: H03H2/00
Filed: 1957-03-20
Abstract: 852,473. R.F. couplings. AIR-EQUIPMENT. March 20, 1957 [May 9, 1956], No. 9103/57. Class 40(7). [Also in Group XXXV] In a radio-compass comprising an omni-directional aerial 22 and a rotatable loop aerial 19, the input circuit for the loop aerial comprises two lengths of coaxial cable 21, one of which is connected to the control grid of a pentode 27 through a variable inductor 28. A trimmer capacitor Z is also provided.
Patent GB-373332-A (GB)
Title: Process of producing partial-colour sensations for three-colour photography
IPC: G03C7/20
Filed: 1931-03-25
Abstract: 373,332. Colour photography and kinematography. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. March 25, 1931, No. 9136. Convention date, March 25, 1930. [Classes 97 (i) and 98 (ii).] A camera having two lenses is used. A single film for the blue component negative is exposed behind one lens, and superimposed films for the red and green component negatives are simultaneously exposed behind the other lens. The parallax of the yellow image from the blue component negative when superimposed on the others is of negligible consequence.
Patent GB-1287041-A (GB)
Title: A method of and an apparatus for producing rotationally symmetrical parts
Inventor: MOCKEL JOHANNES
IPC: B21H1/18
Filed: 1970-02-25
Abstract: 1287041 Making rotationally symmetrical articles; forging; rolling KOMBINAT UMFORMTECHNIK VEB 25 Feb 1970 9155/70 Headings B3A, B3H and B3M A rotationally symmetrical article is produced from a billet of square or quadrangular crosssection by heating the billet to a rolling temperature, pre-shaping the billet to approximately cylindrical form in a press, and then rolling the billet to final form in a transverse rolling machine. The top and bottom tools of the press define a cylindrical or slightly hyperboloidal space for the billet. The rolling machine has roughened jaws or rolls for gripping the billet during rolling.
Patent GB-397416-A (GB)
Title: Improvements in and relating to receptacles
IPC: B65D43/16
Filed: 1933-03-27
Abstract: 397,416. Spring hinges. ERMANN, A. and ERMANN, 0., (trading as CHEMISCHE FABRIK WITTLICH, ERMANN, & CO.), Wittlich, Rhineland, Germany. March 27, 1933, No. 9236. Convention date, March 26, 1932. [Class 65 (ii).] The lid of e.g. a boot-polish tin is attached to the receptacle by a flat narrow spring 5. Closing the lid straightens the spring, while opening it allows the spring to revert to an unstressed position in which it holds the lid open at a convenient angle.