baber/WOPTO huggingface dataset:
Patent GB-211512-A (GB)
Title: Improvements in radio receivers
IPC: H03G11/00
Filed: 1924-02-18
Abstract: 211,512. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Ranger, R. H.). Feb. 16, 1923, [Convention date]. Atmospherics, eliminating or limiting. - In order to reduce the difficulty of reading signals in the presence of static disturbance, the actual signal is caused to operate a cut-off device so that the dots and dashes of the Morse code are manifested as silent interludes (or marking periods) upon a background of heterogeneous noise (or non- marking periods) due to the static. In order to ensure a continuous noisy background, a local note may be.imparted to the receiver by a " chopper " so as to augment the static effect, this, in turn, being silenced by the signal energy. As shown in Fig. 2, a local source 6 modulates the received energy at a frequency of 3,000, this note being amplified and then passed through a double rectifier to emerge as a note of 6000 frequency. After amplification the 6000 cycle variation is applied to an impulse balancer comprising two thermionic tubes 16, 17 arranged in opposition across the secondary of the output transformers 18. Initial impulses are largely balanced out, but persistent signals reappear in the plate coil 24 as a 6000 cycle note. This output is applied to a coil 26 which feeds the limiting or cut-off galvanometer 25. The galvanometer mirror is initially adjusted so that when no signal is present, light from a source 27 is reflected directly on to a photoelectric cell. The light source is interrupted at a frequency of 1000 per second by an obturator 28, so that a corresponding note is normally delivered to the relay or recorder. When a dot or dash is received the galvanometer deflection swings the light-ray off the sensitive cell and the recorder is silenced. Fig. 3 shows a spacing period followed by a Morse dash, then a second spacing period interrupted by an impulse f<1> of static, followed by a dash broken by a momentary static impulse f<2>, the alternate light and dark zones representing the obturator rote frequency. Either the transmitter or the relay may be reversed in order to facilitate the reading of the inverted signals. Fig. 4 shows a magnetron tube used as a limiter or cut-off. One control winding 32 is fed from a local source with a frequency of 500, creating a control voltage which oscillates between the points V<1>, V<2> on the characteristic curve shown in Fig. 6, and giving rise to a frequency of 1000 in the output circuit. Incoming signals are applied to a second control winding 31, which biases the firts control, moving it either to the points V<4>, V<5> where the output is completely cut off, or else to the points V<7>, V<8> where the output frequency is reduced to 500 and is practically eliminated in the subsequent circuits, which are tuned to 1000. In a modified arrangement a local current of 1000 frequency is applied to the grid of a three-electrode magnetron, the signal currents being carried as before by an external coil.
Patent GB-719239-A (GB)
Title: Improvements in or relating to a planographic printing press and a process of printing
Inventor: WOOD WILLIAM HENRY
IPC: B41F7/30
Filed: 1952-02-18
Abstract: <PICT:0719239/III/1> <PICT:0719239/III/2> A planographic printing press having a rotatable cylindrical support and a printing plate thereon comprises an electrode adjacent to the cylindrical support and a source of high potential D.C. connected between the support and the electrode so that a field of force is created whereby finely divided electrically charged elements of ink repellant material are impelled to the printing plate.  As shown in Fig. 1 water 18 in a container 19 communicates with a housing 15, 16 extending axially the length of the plate cylinder 10.  The water is vaporized by atomizing nozzles 20, and, aided by an impeller 23, travels round the housing 15, 16 in the direction shown.  The particles of water are charged by means of a wire 45 extending the length of the housing and connected to a high potential source of D.C. 47.  The other terminal of source 47 may be connected direct to a brush 50 co-operating with a conductive ring 51 on the cylinder 10, or may be grounded as shown, the ring 51 also being grounded.  Owing to the field of force set up between the cylinder 10 and electrode 45 the charged particles are impelled towards the plate 11.  Further electrodes may be provided if desired (Fig. 2 not shown).  The ink repellant may be contained in a housing 35 (Fig. 4) having an aperture which may be varied by a sliding member 37.  The ink repellant may be vaporized by an electric heater 39 and charged by an electrode 55 immersed in the liquid.  In a further embodiment (Fig. 3 not shown) the dampening liquid is vaporized by a vibrating device consisting of a piezo-electric crystal generating ultrasonic vibrations.  In a modification (Fig. 5 not shown) the charging electrode consists of a wire mounted outside the ink repellant housing and provided with pointed wires directed towards the plate cylinder and extending into the housing.  The potential difference between the cylinder and the charging electrode may be varied according to the speed of the press, and reduced at a time corresponding to the passage of the gap in plate 11 past the housing.  The vapourizing and charging apparatus may be automatically turned off when the press is stopped.
Patent GB-223475-A (GB)
Title: Apparatus for drying corn, grain and the like
IPC: F26B17/26
Filed: 1924-02-19
Abstract: 223,475. Steen, C. A. Feb. 19, 1924. Oscillating sieves. - Apparatus for drying grain comprises a reciprocating sieve carrying the grain and surrounded by passages for hot air &c., the sieve being supported by links connected to a longitudinal shaft which is capable of being axially moved by a hand wheel &c. to vary the inclination of the links. The hot air passage may be constituted by a chamber arranged under and connected with the sieve, the air and grain moving in counter current. The sieve surface may be, curved upwards at the discharge end. As shown, the sieve is carried by links 15 suspended in pairs from cross bars 16 on a shaft 17 which may be axially moved by a handwheel 18; the sieve is reciprocated by connecting- rods on a crank-shaft 13. The grain is fed through a funnel 3 and a flexible tube 4 to an adjustable pipe 6, the height of which determines the level of the grain; it is discharged through a channel 7 sloping to one side. Hot air is supplied through an inlet 8 to a chamber 9 integral with the shaking table and having a door 19 for discharge of sand and dirt separated during the process. The used air may escape freely, or the sieve may be surmounted by a closed chamber connected to a chimney, the draught of which may provide the required suction.
Patent GB-111613-A (GB)
Title: Hemming Attachments for Sewing Machines.
Inventor: FAIRWEATHER WALLACE
IPC: D05B35/02
Filed: 1917-03-24
Abstract: 111,613. Fairweather, W., (Singer Manufacturing Co.). March 24, 1917. Sewing - machines; folding-devices. - A device for hemming endless pieces of work, such as the bottoms of knit under-shirts and the like, is constructed to permit completion of the hem without the necessity for removing the work from the machine and subsequent hand-directed stitching. A guide-member 14 with a curved wall 14<x> is adjustably secured to a base member 9 having a co-operating curved face 9<x>. A plate 19, normally overhanging the space between the walls 14<x>, 9x, has a channelled rib 19x which is retained in a slot 21, in the member 9 by a spring-pressed pin carried thereby. The material to be hemmed is placed as shown in Fig. 2, and, towards the completion of an operation, the plate 19 is retracted by the operator or automatically by the beginning of the seam pressing against the inclined edge 19<11>. The movement of the plate 19 is limited in both directions by stops 25, 29 contacting with the side of the base member 9 and a lug 26 on the support 6 respectively. The hemming cavity is gradually tapered and is continued to the neighbourhood of the stitching-devices by extensions 27, 28 of the walls 14<x> and 9<x> respectively. The device is adjustably secured to a support 6, and the latter to the machine by screws and slots, and is described as applied to a cylindrical feed-upthe-arm machine.
Patent GB-534554-A (GB)
Title: Means for measuring cloth or carpets or other materials in rolls
IPC: G01B3/12
Filed: 1940-03-09
Abstract: 534,554. Measuring fabrics &c. REGAN, P. March 9, 1940, No. 4449. [Class 42 (ii)] Cloth, carpets &c. are measured while in the roll by means comprising a spindle 6 which is coupled to an indicator 7 and driven by an electric &c. motor 3. The spindle 6, which is roughened or provided with a friction covering is inserted between the layers of the fabric &c. and then traversed along the layers.
Patent GB-739436-A (GB)
Title: Improvements in drawing sheet plastic
IPC: B29C43/12
Filed: 1954-02-16
Abstract: 739,436. Drawing sheet plastic to form containers &c. UNITED STATES RUBBER CO. Feb. 16, 1954 [April 6, 1953], No. 4485/54. Class 87 (2). A thin sheet (e.g. 0.05 inches thick) of a plastic material which normally ruptures or thins unevenly when drawn (e.g. polyethylene, polyvinylidene chloride) is adhered to a cured elastic rubber or synthetic rubber sheet 2, less than 0.05 inches thick by pressing between flat platens 3 and 4 (see Fig. 1). The resulting laminate is heated, in the case of polyethylene, to 210- 230‹ F. and drawn to the desired shape, after which it is cooled and the rubber stripped from the shaped plastic. When drawing polyethylene the initial laminate may be formed by drawing a vacuum at the interface between the polyethylene and the rubber. The face of the rubber sheet adjacent the plastic sheet may have a coating of a silicone oil. Gas under pressure may be used to force the laminate into conformity with a mould, and vacuum within the mould may be employed in addition, or it may be drawn as in Fig. 3 in which the plug 13 forces the sheet 1, 2 held by C-clamps 12 to the dotted line position. "Snap-back" drawing methods in which the sheet laminate is deformed by differential gas pressure beyond the shape desired and the gas pressure adjusted to allow the sheet to retract into conformity with an inserted shape may also be used or a "leader plug" forming operation in which a plug is used to push the sheet into a mould and differential gas pressure then used to carry the sheet beyond the plug into conformity with the interior of the mould. In an example, a polyethylene hemisphere 4 inches in diameter was drawn from a sheet of polyethylene as follows: a cured sheet of gum stock rubber 0.02 inches thick was affixed to a sheet of polyethylene 0.02 inches thick and the assembly was heated to 210‹ F. and drawn by vacuum to hemispherical shape, cooled, and the rubber sheet stripped from the shell. The invention may be applied to making such hollow articles as shoes, one-piece containers, to drawing very thin sheets from thicker ones produced in a calender or extruder or to expanding plastic tubes to form linings inside pipes.
Patent GB-175526-A (GB)
Title: Bed couches
IPC: A47C17/22
Filed: 1921-02-08
Abstract: 175,526. Heale, J. M. Feb. 8, 1921. Bedsteads convertible into seats. - A folding bed-couch comprises an inner section 6 pivoted to fixed brackets 5, an intermediate section 7, and an outer section 13, carrying a seat member 20, unfolding being effected by a single upward and outward sweep of the part 13. The part 7 has a slidable pivotal connection with supporting levers 9, the latter being connected to the outer section 13 by levers 16 and links 17. Struts 14 and folding legs 24 are provided.
Patent GB-556477-A (GB)
Title: Improvements in or relating to aircraft wings
IPC: B64C3/56
Filed: 1942-04-04
Abstract: 556,477. Aircraft wings. FLETCHER, O. E., MURRAY, E. A., and EVANS, A. E. April 4, 1942, No. 4519. [Class 4] In a folding wing arrangement, each of a pair of wings 2 has a horizontal hinge connection 3 with a centre section 4 which is mounted to turn about a vertical pivot 5 on the upper part of the fuselage 1. The wings with the section 4 may thus be turned to the fore and aft position shown in full lines and one wing may then be turned over on to the other about its hinge 3. In a modification, a separate centre section is dispensed with, the wings being directly hinged together. Bracing struts 7 are hingedly secured to the underside of the wings at 8 and are detachably secured to the fuselage at 9. The rearwardly extending wing rests in the folded position on a bracing strut 10 extending between tail fins 11.
Patent GB-1169794-A (GB)
Title: Tile Product and Method and Apparatus for making same
IPC: B26D1/00
Filed: 1967-01-30
Abstract: 1,169,794. Laminated tiles. FLINTKOTE CO. 30 Jan., 1967 [18 Feb., 1966], No. 4529/67. Heading B5N. Adhesive-coated floor-tiles or the like, each with a protective sheet over the adhesive, are produced by conveying a succession of tiles T, slightly spaced apart, along a straight line, moving a continuous web of adhesive-coated transfer material P, e.g. of paper, with the adhesive coating facing the tiles, laminating the web to the tiles by rollers, and severing the web between adjacent tiles. In one apparatus for doing this, tiles T are lowered one by one from a hopper 4 on to a conveyer 18. The tiles then pass to a roll 54, by which an agent for accelerating the curing of the adhesive, e.g. acetic acid, is applied, e.g. by a felt pad covering a hole in the roller, the roller being hollow and containing the agent. This is applied, e.g. in the form of a cross, subsequently to set some of the adhesive carried by the web P quickly and prevent sliding of the web relative to the tiles. The web P is drawn from roll 72 around roller 76 to adhesive-applying roll 78, which has axially extending grooves over most of its width, but has a portion without these. Thus the web is coated with a pattern of adhesive, doctor blade 94 wiping the roll clean where there are no grooves. The web and tiles then pass beneath laminating roll 110 to severing rolls at 12 and to stacking means 14. Gearing is described so that the bands on the web without adhesive correspond to the spaces between tiles, and so that the severing rolls cut midway between tiles. Preferably, the adhesivecoated web P is thinner and wider than tiles T, but each band of adhesive is narrower than the width of each tile, so that the adhesive interlayer does not extend to the sides of the tile. In an alternative embodiment, Fig. 25 (not shown), the web is narrower than the tiles and is coated with dry adhesive, having a release surface on its back side, and prior to reaching the laminating roll bands of adhesive are removed from it by pairs of knives which penetrate the adhesive but not the backing web, the web then passing around a roller having lobes and contacting a paper having greater affinity for the adhesive than the web. This roller is driven by a Geneva mechanism so that the lobes correspond to the severed bands of adhesive which are removed due to the pressure of the lobes. The tiles may be made of vinyl, vinyl asbestos, asphalt asbestos, rubber or wood and the web is preferably paper coated with release material, e.g. silicone, but may be polyethylene terephthalate, polytetrafluoroethylene or polyethylene.
Patent GB-757432-A (GB)
Title: Improvements in and relating to inverted mantle type hydrocarbon burning lanterns
Inventor: TROW FAYVILLE ANTHONY
IPC: F23D99/00
Filed: 1954-02-16
Abstract: 757,432. Vapour burners. QUEEN STOVE WORKS, Inc. Feb. 16, 1954, No. 4563/54. Class 75(1). An inverted mantle lantern for burning hydrocarbon fuel under pressure comprises a horizontal plate 9b having a central opening, a first chimney 10 secured in an air tight manner to the upper face of the plate 9b in register with the central opening therein, mantle supporting means mounted beneath the plate in register with the central opening, a second chimney 35 surrounding the first chimney 10, an annular fuel tank 21 surrounding the second chimney 35 and having a vertical side wall extending upwards from adjacent the lower end of the second chimney and forming a third chimney, the lower ends of the second and third chimneys being maintained in non-communicating relation with the first chimney 10 by the plate 9b and the arrangement being such that the products of combustion and air heated by the mantle flow only up the first chimney 10 and cool air admitted above the plate 9b flows upwardly through the second and third chimneys. The plate 9b consists of the upper part of an inverted cup-shaped member 9 supported on a wire stand 5 and extends outwardly from the lower end of the first chimney 10 to beyond the lower end of the second chimney. A slotted collar 36 through which air passes to the lower ends of the second and third chimneys is disposed between the bottom of the fuel tank and the plate 9b. A hood H comprising a slotted collar 14 held between an annular bottom plate 12 and a circular top plate 13 is secured to the upper end of the first chimney with its bottom plate 12 extending outwardly above the upper end of the second chimney 35 to deflect outwardly the flow of air therefrom. The second chimney 35 is welded to an annular plate 18 extending outwardly above the fuel tank to deflect the flow of air from the third chimney over the surface of the tank and clamped between spacing collars 17, 19 on posts 15 extending through the hood H and screwed into brackets on the top of the fuel tank. The tank is mounted on two studs 22 which are internally threaded to receive the reduced upper ends of studs 23 extending through the plate 9b and adapted to support a ring 26 engaging the upper lip of a globe 28 surrounding the mantle 31 and having a bottom opening 29 for the supply of air to the burner. A fuel supply tube 37 having an open upper end located above the fuel and having a small opening 38 in its lower portion is connected to a needle valve 40 leading to a generator tube 42 and a mixing chamber'44 located below the plate 9b. Air enters the mixing chamber through an opening 45 in register with an aperture in the plate 9b.
Patent GB-676942-A (GB)
Title: Needle-bar drive for sewing machines
IPC: D05B3/02
Filed: 1951-02-26
Abstract: 676,942. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Feb. 26, 1951, No. 4573/51. Class 112. [Also in Groups XXV, XXVI and XXXIV] In a sewing machine having a needle-bar 28 reciprocated in a vibratory frame 31 by a crank 45 secured to a rotary shaft 15, the crank pin 44 has a crowned surface in bearing contact with the connecting link 41. The upper end of the link has needle rollers 42 engaging the crowned surface, and the lower end of the link embraces a spherical element 40 sliding on a pin 39 fixed to the bar. To prevent the link and bar turning a projection 46 on the link slides within a guideway 47 fixed to the machine frame. The light metal frame 31 is pivoted on pintles 32 arranged transversely to the pin 29, and is vibrated by a pitman 34 actuated by an adjustable eccentric.
Patent GB-139468-A (GB)
Title: Improvements in address-carrying frames for address-printing machines
IPC: B41L47/02
Filed: 1920-02-14
Abstract: 139,468. Addressograph, Ltd., (Assignees of Michetti, L.). Feb. 25, 1919, [Convention date]. Printing-surfaces. - Addressing - machines are fitted with metal frames for receiving the address plates, each frame being constructed so as to carry a separate plate on each face, so that twice the number of addresses can be printed from a given number of frames. A frame 1 is shown having bent-up parts 4, 5, 4<b>, 5<a> bent upwardly or downwardly from the outside edges or centres of the frames in such a way as to form a securing means for one plate 6 on one face of the frame, and for a similar plate on the reverse face. The frames are formed with protecting side projections 9 formed by bending the metal.
Patent GB-104768-A (GB)
Title: Improvements in and relating to Morticing Machines.
Inventor: HOBBS ROBERT WILLIAM
IPC: B27F5/06
Filed: 1916-03-31
Abstract: 104,768. Hobbs, R. W., and Whitting, H. A. March 31, 1916. Mortising. - A chain mortising-attachment, comprising a bracket 5 carrying a driven pulley 8 and sprocket wheels for the chain 10, is provided with lugs 6 to enable the machine to be attached to the spindle 4 of an ordinary chisel mortising-machine or to a similar suitable support.
Patent GB-373216-A (GB)
Title: Apparatus for controlling a counting warp thread for indicating the weft density in looms for weaving
IPC: D03J1/00
Filed: 1931-02-16
Abstract: 373,216. Indicating weft closeness in weaving. ORNSTEIN, E., 55, Tivoli, Br³nn, Czecho-Slovakia. Feb. 16, 1931, No. 4832. Convention date, Feb. 17, 1930. [Classes 142 (ii) and 142 (iv).] To determine the weft density a counting warp thread is floated alternately in the upper and lower sheds for a number of picks and is operated by apparatus comprising a changeover device which is adjustable with respect to a scale 31 having a pointer 32. The heald for this counting thread, which may be printed in alternate colours every 5 cms. for instance, is adjustably operated by means of a cranked lever 12 furnished with several holes 121. This lever 12 is loosely mounted on a shaft 2 oscillated by linkwork from a rocking lever of the loom and furnished with a member 7 carrying pawls 8, 9 for operating oppositely toothed ratchet wheels 4, 5 connected to a bevel wheel 6, which can drive either of two wheels 24, 25 on a slidable sleeve 23 turning with a shaft 26. A cord &c. inserted in the opening 91 of the pawl 9 is connected to the loom reversing arrangement, so that when the loom is reversed, the direction of rotation of the wheel 6 is also reversed. In the positions shown in Fig. 1, the wheel 6 gears with the wheel 25 and the shaft 26 turns forwardly and moves a nut 28 on a threaded part 27 to the right until it engages an adjustable stop 30 on and moves a flat bar 20 to the right. This bar is embraced by and furnished with fixed stops 21, 22 for operating a spring-controlled lever 17 having an arm 16 engaging a slotted lever 14. By means of a pin 33, the lever 17 moves the sleeve 23 to put the wheel 24 into engagement with the wheel 6 whereby the direction of rotation of the shaft 26 is reversed. Simultaneously the lever 14 is rocked by the arm 16 and a pin 15 thereon allows a pawl 13 on the arm 12 to fall into the path of a tooth 11 on an eccentric 10 on the shaft 2, whereby the lever 12 is operated and the heald is raised. The nut 28 now moves to the left until it engages a stop 29 and moves the bar 20 to the left thereby throwing the lever 17 back to its former position and causing the wheel 25 to be re-engaged, the pawl 13 to be raised out of action and the lever 12 to lower the heald. The stops 21, 22 coact with parts on the lever 17 so constructed that the stop 21, or 22 which has just operated the lever 17 can pass freely through it in case the loom is simultaneously reversed.
Patent GB-136722-A (GB)
Title: Improvements in and relating to Induction Coils.
IPC: H01F38/12
Filed: 1919-02-26
Abstract: 136,722. Midgley, A. H., and Vandervell & Co., C. A. Feb. 26, 1919. Transformers.-An induction coil, intended more particularly for ignition purposes, has the secondary coil c mounted on an insulating-tube b on the core a. The primary d is mounted outside the secondary on a removable case c of insulating-material. An outer insulating-casing is provided, and a condenser i is attached as shown. The terminal base m has a cover n with a moulding insert n' of brass, steel, &c., and the hightension terminal o<1> is held against the part n<1> by a steel spring o. The primary coil may be surrounded by sheet iron having iron end pieces directed towards the central core.