baber/WOPTO huggingface dataset:
Patent GB-310030-A (GB)
Title: Process for bleaching sensitive vegetable and animal fibres and materials, more particularly feathers, skins, pelts and hairs (bristles) by treatment with oxidising bleaching agents
IPC: D06L4/12
Filed: 1929-04-11
Abstract: 310,030. Somajni, G. April 20, 1928, [Convention date']. Addition to 305,135. Controlling motors by varying terminal voltage; regenerative systems.-The arrangement described in the parent Specification for controlling a compound-wound traction motor A by applying graduated voltages obtained from a dynamotor is modified by disposing the segmental contacts of the controller C so as to give, in effect, two sub-positions for each step of applied voltage, and also by the provision of a second subsidiary drum switch C" for short-circuiting series resistance R at one of the two sub-positions corresponding to each voltage step. A lost-motion coupling N between the drums C and C<11> interchanges the two sub-positions in which the shortcircuit is made, according as the drum C is being turned forwards for accelerating or backwards for braking. Part of the resistance R may be controlled by a differential relay connected to additional contacts on the drum C<11>. The resist ance R may be replaced by a counter-voltage machine mechanically coupled' to the dynamotor.
Patent GB-1324491-A (GB)
Title: Dynamic shift registers
IPC: G11C19/18
Filed: 1971-04-26
Abstract: 1324491 Shift registers INTERNATIONAL BUSINESS MACHINES CORP 26 April 1971 [29 June 1970] 11324/71 Heading G4C [Also in Division H3] A dynamic recirculating FET shift register has, in addition to the feedback path between its last and first stages, a feedback path between the last and first stage of a group of stages (there being at least one stage in the group) so that the register can be operated in a static mode. Fig. 3b shows a modified two-phase stage for use as the first stage of a group, the remaining stages of the group being conventional. In the dynamic mode R makes FET T9 conductive so that a data input is stored inverted on gate-source capacitance C3 at clock phase # 1  and is subsequently transferred with inversion to C4 at clock phase # 2 . In the static mode R makes T10 conductive so that feedback input 62 is transferred with inversion to C3 instead of the data input. For true static operation each stage has its own feedback path as shown by the broken line. Similar circuits for four-phase operation are described.
Patent GB-1436052-A (GB)
Title: Vacuum cleaners
IPC: A47L9/00
Filed: 1974-03-14
Abstract: 1436052 Suction cleaners FISKER &  NIELSEN AS 14 March 1974 [14 March 1973] 11390/74 Heading A4F A suction cleaner comprises a motor driven fan unit (not shown) mounted in a casing 1, 2 having an air discharge aperture, e.g. between a cap 26 and a diffuser 28, to which the outlet of the fan unit is connected by internal ducting, e.g. to provide air-flow from a baffle device 6 at the fan outlet through a gap 34 between partitions 13, 15 and thence through a sleeve 21, the ducting having at least one aperture 30 in a wall thereof downstream of a flow restriction 15a therein, and at least one air inlet aperture 33 in the casing wall spaced from the air discharge aperture communicates with the aperture or apertures 30 via an air-flow passage comprising a slot or slots 32 defined by a circumferential partition 16 and having a total flow crosssection area which is smaller than the total flow cross-section area of the aperture or apertures 30. In operation of the cleaner atmospheric air is drawn into the chamber 19 via the aperture or apertures 33 and flows through the slot or slots 32 and the aperture or apertures 30 to cool the air-flow discharged by fan unit. A flap valve 9 at the outlet of the fan unit is closed when the unit is inoper-  ative.
Patent GB-194186-A (GB)
Title: An improved device for stropping razor blades
IPC: B24D15/08
Filed: 1922-04-22
Abstract: 194,186. Rhodes, M. H. April 22, 1922. Stropping-apparatus.-The blade 5 of a safety razor is held in a holder 6 and is pressed upon a ribbed stropping- surface 4 carried by a rotatable disc 3 which is mounted in a housing comprising a base 1 and a cover 2, the cover being provided with an opening to expose the stropping-surface. The disc 3 is rotated by a foldable handle 12 which engages, through a one-way clutch, a standard 7, Fig. 6, secured to the disc. Secured to the standard is a pinion 31 engaging a toothed wheel 32 pivotally mounted on the cover 2 and having on its upper surface a cam 35 and a lug 42. The blade-holder is mounted on a rod 23 which is rotatably carried by a tube 21 passing transversely through a shaft 15. The shaft 15 has reduced spindle ends 16 supported in a hole and a slot in standards 13, 14 respectively, and a spring 36 rotates the shaft so as normally to hold the razor blade away from the strop, as shown in Fig. 3. The blade is pressed on to the strop at intervals by engagement of the cam 35 with a roller 34 carried by the shaft 15, and the blade, when lifted from the strop, is turned through 180‹ about the axis of the rod 23 by means of an arcuate rack 39 formed on a member 37 which is pivoted on the cover and is rocked by the lug 42, the rack engaging a pinion 24 mounted on the rod 23. In order to adjust the pressure of the blade on the strop, the spindle end 16 of the shaft 15 resting in the slot in the standard 14 is movable up and down, to adjust the height of the shaft, by a lever 17 having a bent end engaging the spindle end and pivoted to the standard; the lever is held in adjusted position by engagement with notches in a slot formed in a casing 20 enclosing the working parts of the apparatus. The blade-holder, Fig. 8, comprises two jaws 6, one of which is secured to the rod 23, the other being pivoted thereto at 27 and movable towards and from the fixed jaw by a lever 30 having a bent end 29. When the lever is turned so that the end 29 engages a notch 28 in the rod the jaws are open; when turned to ride on the rod the jaws are held closed.
Patent GB-471381-A (GB)
Title: Improvements relating to level flight control for aircraft
IPC: G01C19/00
Filed: 1936-04-21
Abstract: 471,381. Fluid-pressure servomotor-control systems. SPERRY GYROSCOPE CO., Inc. April 21, 1936, No. 11407. Convention date, April 23, 1935. [Class 135] A level-flight control for aircraft comprises. a servomotor 19 for actuating the elevator rudder 33 under the control of a pressure-responsive device 4 according to the variations of engine intake pressure incidental to the variations of engine speed which are produced when the craft deviates from its normal level flight. The Bourdon tube 4 is coupled by means of a floating lever connection 16 to a pivoted member 21 carrying ports 24 and 25 which co-operate with a vane 22 to regulate the degree of suction on the two sides of a diaphragm 27 which actuates a pilot valve 28 of the rudder servomotor 19. A follow-up connection in the form of a cable 17 is provided between the servomotor and the floating lever 16. This control device may operate in combination with an automatic pilot control such as a gyroscopic device G or other gravitational responsive device to control the servomotor 19. A gyroscopic controlled system is described more fully in U.S.A. Specification 1,992,970. Alternatively the automatic pilot may operate a main elevator rudder through a separate servomotor and the servomotor 19 be used to control a subsidiary trimming-rudder. A hand control 31 is provided which can be operated on byepassing the servomotor 19 by a valve 32.
Patent GB-153925-A (GB)
Title: Improvement in non-freezing fuel
IPC: C10L1/02
Filed: 1919-05-07
Abstract: Motor spirits with freezing points below -60 DEG  F. consist of:-(1) 40 volumes of ethyl alcohol, 28 volumes of gasolene, 17 volumes of benzol, 7.5-10.0 volumes of ether, 8 volumes of toluol. (2) 20 volumes of ethyl alcohol, 20 volumes of gasolene, 15 volumes of kerosene, 35 volumes of methyl-ethyl-ketone, 5 volumes of ether.  (3) 15 volumes of benzol, 40 volumes of alcohol, 30 volumes of gasolene, 15 volumes of ether.
Patent GB-1143366-A (GB)
Title: Improvements relating to glyceride oils
IPC: C11B3/06
Filed: 1966-03-16
Abstract: 1,143,366. Alkali-refining oils. UNILEVER Ltd. 16 March, 1966 [18 March, 1965], No. 11430/66. Heading C5C. In a process for alkali-refining a glyceride oil with an aqueous liquid by contacting said oil with aqueous alkali and removing in aqueous solution the soap formed, the oil and aqueous liquid are contacted at a temperature not less than 105‹ C. and not high enough to lead to significant saponification of the oil, under a superatmospheric pressure which is sufficiently high to prevent boiling, in an unpacked space. Temperatures of up to 170‹ C. may be used. The pressure may result solely from the vapour of the aqueous phase or an inert gas may be introduced.
Patent GB-115154-A (GB)
IPC: A43D5/02
Abstract: 115,154. Pascall, F. July 24, 1917. Last-supports for use in hand work.-The usual supporting leg of a hobbing iron is dispensed with, and the body b, Figs. 1 and 3, of the iron is formed with a deep slot c and with extended side walls d to fit over the handle e of a domestic smoothing-iron f or other support. In a modified construction, Fig. 6, the iron is positively locked to its support, as by a bridge-piece j engaging over studs h and held in place by nuts k, the side walls d of the first construction being dispensed with. Other means of securing the iron may be used, such as set-screws passing through one or other or both of the side or end walls and bearing on adjacent parts of the support, or studs or bolts may be arranged in the side walls to engage the handle or support; or again, one of the side walls may be of less depth than the other and completed by a detachable strip which may be secured to the opposite wall by bolts &c. in such a manner as to grip the support.
Patent GB-474044-A (GB)
Title: Improvements in and relating to electric heating devices for type composing machines
IPC: B41B11/76
Filed: 1936-04-22
Abstract: 474,044. Couplings. BADER, K. April 22, 1936, No. 11517. [Class 38 (i)] [Also in Group XI] In a heating-element for the mouthpiece of a type-composing machine and comprising a metal housing containing the main heating resistance and a tapped series resistance for regulating the heating effect, the connections between the main and series resistances and the outside leads are effected within casings of ceramic or like refractory insulating material accommodated within the metal housing. Each casing may consist of an opposed pair of ceramic members 10, Fig. 6, each provided with a recess 11 and grooves 12, 13. The resistances are threaded through insulating blocks 2, Fig. 4, arranged side by side in a housing 1. The supply leads 16 are covered with asbestos and a flexible armouring 17 which is expanded or distorted in the holes 19 so that it cannot return through the holes 18. The terminal plates 14 carry screws 15 and are housed in the recesses in the ceramic members 10. The ends of the resistances and the tapping leads therefrom are covered in beads 21. An asbestos strip is fitted over the beads and a cover plate is then fitted over the asbestos strip and the terminal connections. A cover plate 3, Fig. 2, with flanges 4 having slots 5 for embracing the stems of bolts 9 is then secured to the housing by these bolts. The free ends of the external leads are provided with terminal plates as described in Specification 474,059.
Patent GB-235365-A (GB)
Title: An improved bottle or well for ink or other liquids
IPC: B43L25/00
Filed: 1924-05-10
Abstract: 235,365. Setten, R. S. May 10, 1924. Inkstands.-In an inkbottle in which a float is adapted to close automatically an opening in a detachable cover, the seating c<4> for a ball float d is provided at the underside, of a rigid depending boss c<3> formed integral with the cover c. The cover may be screwed on to a boss a<3> on the bottle, or an annular projection on the cover may fit into the mouth of the bottle, a washer of leather &c. being provided. A concave recess a<4> in the bottom of the bottle allows the ball d to be depressed by a pen nib, or the interior of the bottle may be of smaller diameter at the bottom to prevent undue displacement of the ball.
Patent GB-284508-A (GB)
Title: Improvements in a device for automatically maintaining constant the tension in a webof paper to be printed
IPC: B65H23/06
Filed: 1927-04-30
Abstract: 284,508. Ringier & Co., Verlagsanstalt & Vereinigte Buch-und Steindruckereien. April 7, 1927, [Convention date]. Feeding webs.-The tension of a paper web passing through a printing-machine is maintained substantially constant automatically by passing the web over a rotatable drum which is normally stationary but rotates upon variation of the tension of the web to actuate web braking means to cause the normal tension to be restored. The drum is held stationary by a weighted arm secured to it, the position of the weight being adjustable to vary the normal web tension. The web 1 passes from a roll 2 to the printing-couples A, B between which the web slides over the surface of the drum 10 rotatably mounted upon the frame 17 and having secured to its. axle an arm 19 carrying an adjustable weight 20 which is so set that, with normal web tension, the arm remains horizontal. The insulated end 34 of the arm normally lies between a pair of contacts 41, 41<1> and conduits 42 ,43, 37 connect the contacts 41, 41<1> and end 34 to relays 44, 45 controlling switches 44<1>, 45<1> in the circuit of a three-phase motor 46 connected to a brake on the spindle 25 of the roll 2. If the tension on the web increases the drum 10 rotates and the circuit of the relay 44 is closed through the contact 41, thereby closing the switch 44<1> to cause the motor. 46 to be rotated in a direction to release the brake. If the web tension diminishes the switch 45<1> is closed to drive the motor in the opposite direction to increase the braking pressure. The brake comprises a band 23 passing round a brake drum 24 and connected to a rack 28 with which gears a segment 30 on one end of a two-armed lever, the opposite end 32 of which is connected to a screwed spindle 33 threaded into a rod 49 operated by a worm-wheel 48 driven by a worm 47 on the shaft of the motor 46. The worm-wheel 48 is loose on the rod 49, but is normally clutched thereto by a slidable clutch 54 which may be disconnected from the wheel 48 when desired to allow manual adjustment of the brake by the knob 52 fixed to the upper end of the rod 49.
Patent GB-769956-A (GB)
Title: Improvements in or relating to electric surge arresters
IPC: H01T1/16
Filed: 1955-04-21
Abstract: 769,956. Protective arrangements. SIEMENS - SCHUCKERTWERKE AKT. - GES. April 21, 1955 [April 21, 1954], No. 11600/55. Drawings to Specification. Class 38 (4). A surge arrester comprises a quenching sparkgap in series with a number of rectifier elements consisting of semiconductors having a changeover from n-conduction to p-conduction within one and the same material, e.g. germanium, or silicon. The elements may be arranged backto-back when the arrester is for use on an A.C. circuit. The critical inverse voltage of each element is preferably about 100 volts and the inverse characteristic curve such that the conductance of the element is increased by at least twenty-five times upon the application of an inverse voltage of not more than twice the critical value. The rectifier elements preferably consist of a compound of elements of the third and fifth groups of the Periodic System and may be formed of thin crystal layers, having low impurity-centre content, which are provided on both sides with thin metal electrodes applied by fusion so as to supply to the crystal layer zones adjacent thereto an impurity-centre content acting in opposite directions on the two sides of the crystal layer. In another arrangement the series of rectifier elements is formed by a single semiconductor crystal having p- and n-layers succeeding one another at regular intervals.
Patent GB-994514-A (GB)
Title: Improvements in or relating to bistable electrical circuits
IPC: H03K3/315
Filed: 1962-03-27
Abstract: 994,514. Tunnel diode bi-stable circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 27, 1962 [March 31, 1961], No. 11615/62. Heading H3T. A bi-stable circuit comprises a bridge network, one arm of which includes an element, e.g. a tunnel diode which exhibits two different resistance regions dependent upon the applied potential. As described with reference to Fig. 1 the circuit comprises three parallel paths, two of which consist of series connected resistors 12, 23 and 14, 24 and the third consists of a resistor 13 in series with a tunnel diode 10, which may be set to either its high or low resistance region by a pulse applied through capacitor 25. The values of the resistors are adjusted such that in one state no current flows in a sensing conductor 16, and in the other state no current flows through a sensing conductor 17. In order to determine the state of the circuit, transformers 18, 19 are coupled to the sensing conductors 16, 17 such that the magnitude of an output pulse on a transformer secondary in response to an input on its primary depends on whether current is flowing in its associated conductor or not. In a modification, Fig. 3 (not shown) resistor 13 is replaced by a second tunnel diode and in a further modification, Fig. 2, the bridge has only two arms, the two sensing conductors 30, 31 being connected to a common resistor 28.
Patent GB-699228-A (GB)
Title: Furnace for annealing wire and metal strip
IPC: C21D9/56
Filed: 1952-05-08
Abstract: 699,228. Annealing-furnaces. WESTFALISCHE DRAHTINDUSTRIE. May 8, 1952 [May 10, 1951], No. 11649(52. Addition to 682,114. Class 51(ii) In an annealing furnace of the type claimed and described in the parent Specification combustion chambers are disposed between the burner and the tunnel. In the furnace shown the wires or strips to be annealed are drawn through channels or tubes 1 in the direction of the arrow 2. Near the exit end of the furnace are disposed burners 3, 4, 5, the combustion gases of which have to flow through combustion chambers 6, 7, 8, before they reach the channels 1. After traversing the channels in counter-current to the movement of the material being annealed the gases are drawn into a chimney by the aid of a fan via channels 9, 10, each of the channels 1 being individually connected by a channel 9 with the channel 10. Valves 11 provided in. the channels 9 regulate the gas flow there along and therefore the temperature in each channel 1.
Patent GB-129136-A (GB)
Title: Improvements in and relating to Governing Devices for Gas Engines and the like.
IPC: F02P5/06
Filed: 1918-07-16
Abstract: 129,136. Marks, E. C. R., (Splitdorf Electrical Co.). July 16, 1918. Centrifugal governor; transmitting- mechanism. - The speed of explosion engines &c. is controlled by means of a centrifugal governor 8 which, when the speed reaches a certain limit, moves the member 4 into contact with a member 3 and thereby shortcircuits or breaks the primary circuit of the generator G supplying current to the sparking-plug &c. The governor and interrupter 1<a> of the primary coil are enclosed in a casing supported by a rod 2, which is screwed into an insulated part of the interrupter and carries the contact 3 adjustably.
Patent GB-701084-A (GB)
Title: Improvements in or relating to apparatus for polarographic analysis
IPC: G01N27/48
Filed: 1952-05-08
Abstract: 701,084. Polarographic apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 8, 1952 [May 10, 1951], No. 11702/52. Class 37 The dropping mercury electrode comprises an amalgamated metallic element extending beyond the mercury receptacle into the test solution. In the example shown, Figs. 1 and 2, an amalgamated platinum or platinum alloy or palladium wire extends from a capillary orifice 24b, Fig. 2, in a glass tube 24. Under test conditions mercury flows into the glass tube 24 and emerging at 24b flows continuously along the amalgamated wire 15 whereby small droplets spontaneously form and detach themselves from the end of wire 15 and fall into the mercury pool 13. The wire 15 may dip into an insulating liquid 30 instead of terminating in the test solution 11 so that a mercurial surface of constant area is always in contact with the test solution 11. The insulating liquid may consist of tetrachloroethane or dibytl-phthalate or ethylphthalate. In a modification, Fig. 3, the wire 15 extends through a capillary tube 24e. The wire 15 passes through 24b or 24e with such spacing as would give, were the wire free to move longitudinally, a light frictional engagement. The inner end of wire 15 may be fused to a glass bead as at 24a, Fig. 2, with in this case circuit connection direct to the mercury at 23 or 24, Fig. 1, or as shown, Fig. 1, the wire 15 may be secured to a metal button sealed in the wall of tube 24 and thus connected to the measuring circuit. The invention is directed towards reduction or elimination of measuring current fluctuations or oscillations due to mercury drop formation.
Patent GB-875926-A (GB)
Title: Centre ledge scoop for separable fasteners
IPC: A44B19/04
Filed: 1958-04-14
Abstract: 875,926. Sliding clasp fasteners. PLASCO Ltd. April 14, 1958 [April 15, 1957], No. 11718/58. Class 44. In a so-called scoop for separable fastener stringers, a bottom side 13 of the scoop has a portion adapted to project beyond a beaded edge 10<SP>1</SP> of a stringer tape 10 and includes ledge surfaces 18 merging with a female coupling portion 15 of a top side 12 of the scoop, a male coupling portion 14 of the scoop having a lower surface 16 parallel to and spaced from the ledge surfaces 18 and adapted to overlie the ledge surfaces of scoops of a companion stringer, and the projecting portion of the bottom side of the scoop terminating, at its ends, in laterally projecting ribs 19 increasing the area of the ledge surfaces 18. As shown, the spacing between the ledge surfaces 18 and the lower surface 16 is such as to permit abrupt folding of the stringers.
Patent GB-183262-A (GB)
Title: Improvements in electrodes suitable for resistance welding processes
IPC: B23K35/22
Filed: 1921-04-23
Abstract: 183,262. Woodburn, R. F. April 23, 1921. Welding.-An electrode for electric resistance welding or the tip thereof, consists of iridium which has a high melting-point relatively to the metal to be welded. According to the Provisional Specification, other metals suitable for such an electrode are : gold, platinum, tungsten, and tantalum, or their alloys. The electrodes are also stated to be for the purpose of welding metals of high conductivity such as aluminium and copper.
Patent GB-542619-A (GB)
Title: Improvements in or relating to hypodermic needles
IPC: B21G1/08
Filed: 1940-07-16
Abstract: 542,619. Heat treating hypodermic needles. FORRESTER, H. J. C. (Macgregor Instrument Co.). July 16, 1940, No. 11742. Drawings to Specification. [Classes 72 and 82 (i)] [Also in Groups XXII and VI] A one-piece seamless hypodermic needle is made from a single sheet by a series of pressing and swaging operations. Between each pressing and swaging operation the needle may be annealed preferably in a dry inert atmosphere of 95 per cent. hydrogen and 5 per cent. nitrogen. If the needle is of stainless steel, it may be hardened by placing it in such an atmosphere for half a minute at a temperature of 1850 F. and then cooling in oil or water. It may be tempered by heating to 400 F. in the same atmosphere and again cooling. The needles may be formed from an alloy of nickel and beryllium, containing about 1.6 per cent. of beryllium.