baber/WOPTO huggingface dataset:
Patent GB-553971-A (GB)
Title: Improvements in or relating to frequency-doubling devices for high-frequency oscillations
IPC: H03B19/00
Filed: 1941-12-11
Abstract: 553,971. Valve generating circuits. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Dec. 11, 1941, No. 16010. {Class 40 (v)] A frequency doubling arrangement comprises a bridge a, b, c, d formed of diodes B<SP>1</SP>, B<SP>2</SP> and condensers C<SP>1</SP>, C<SP>2</SP> across points a, c of which is applied the frequency to be doubled from a tuned circuit L<SP>1</SP>, C<SP>3</SP>. Energy at the double frequency can be taken across a circuit L<SP>2</SP>, C4 tuned to the double frequency and connected across b, d. A point e on L<SP>2</SP> and a point on L<SP>1</SP> are earthed. To prevent radiation losses from leads 2, 3 at the double frequency it is arranged that the points a, c have no potential at the double frequency relative to point e. This is effected by ensuring balance of both the bridges a, b, c, d and a, b, e, d, by making c, and C<SP>2</SP> equal to the anode-cathode capacities of the valves B<SP>1</SP>, B<SP>2</SP> and making e the electrical mid-point of circuit L<SP>2</SP>, C4. Fig. 2 shows a constructional arrangement in which the oscillations to be doubled in frequency are fed from 1 to a quarter wave Lecher line 2, 3 tuned by C and connected to the grids of triodes T<SP>1</SP>, T<SP>2</SP>, to the connected anodes and cathodes of which is connected a Lecher line 4, 5 earthed at e and equal to a quarter wavelength of the doubled frequency. By choosing similar valves T<SP>1</SP>, T<SP>2</SP> the ratio of the grid-anode and grid-cathode capacities is the same for both tubes, and the ratio of the impedances of the two halves of the Lecher line 4, 5 is made equal to this ratio by having one wire thicker than the other.
Patent GB-151707-A (GB)
Title: Improvements in the manufacture of anthranol
IPC: C07C29/00
Filed: 1919-06-26
Abstract: Anthranol is prepared by reducing anthaquinone with caustic alkali and a carbohydrate such as glucose, cane sugar, molasses, maltose, or lactose.
Patent GB-292586-A (GB)
Title: Improvements in or relating to two-stroke internal combustion engines with port scavenging and airless injection
IPC: F02B25/00
Filed: 1928-06-01
Abstract: 292,586. Maschinenfabrik Augsburg- Niirnberg Akt.-Ges. June 24, 1927, [Convention date]. Ports, arrangement and forms of. - In a two-strokecycle engine cylinder having superposed piston-controlled exhaust and scavenging ports b, a, arranged on one side of the cylinder, the ports are asymmetrically arranged, e.g. the ports a being directed at a point E, so that the plane FE of the resultant stream of air, which is shown dotted in Fig. 1, is at an angle to the plane of symmetry DC, and a whirling motion of the air is produced. Alternatively banks of symmetrically arranged ports may be staggered, the extreme ports, which are not superposed, being extended axially. In a double-acting engine the ports are arranged to whirl the air on both sides of the piston rod.
Patent GB-561329-A (GB)
Title: Improvements in or relating to sugar beet or the like harvesting machines
IPC: A01D23/04
Filed: 1942-11-17
Abstract: 561,329. Beet harvesting machines. JOHNSON, T. S., and JOHNSON'S (ENGINEERING), Ltd. Nov. 17, 1942, No. 16226. [Class 6 (iii)] A sugar beet harvesting machine comprises an inclined double conveyer system 6 for gripping the tops and pulling the beets out of the ground, a further conveyer system 17 for subsequently gripping the beet bodies, and a cutting device 19 between the two systems for severing the tops from the bodies while the bodies are gripped by the conveyer system 17. In the machine shown, the earth adjacent the beets is loosened by rotating discs 4 and adjustable shares 5. The two conveyer systems each comprises a pair of endless belts, the inner runs of which are spaced sufficiently apart to afford the necessary grip on the -beets and tops respectively. The belts for the tops are surfaced with india rubber or the like, while those for the beets are formed with curved embracing members. Spring-controlled devices are provided for each inner run to maintain the pairs of such runs parallel. The frames carrying the systems 6, 17 are pivoted respectively at 15, 15a, and the angle of. inclination of the frames may be adjusted. The tops are discharged on to the ground or into a laterally projecting shoot, while the beets may be discharged either on the ground, into hoppers for periodic discharge, through a shoot leading to the ground or into bags, or, as shown, to rotating cleaning rollers 20 which throw the cleaned beets to a conveyer 22. Deflector plates 26 serve to depress the beets into the correct position for the topping operation. The machine is coupled by a coupling 2 to a tractor having a driving shaft 23 serving to drive the discs 4, cutters 19,.the conveyer systems 6, 17, the rollers 20 and the conveyer 22.
Patent GB-809135-A (GB)
Title: A floor treating appliance
IPC: A47L13/24
Filed: 1956-05-25
Abstract: 809,135. Mop handles. RONUK Ltd., and PEET, E. April 5, 1957 [May 25,1956; March 5, 1957], Nos. 16237/56 and 7280/57. Class 61. A floor treating appliance comprises a substantially U-shaped metal clip fitted with a socket for attaching it to a handle and a mop element comprising multiple sheath layers each sheath layer having secured thereto a depending fringe of textile thrums, the clip providing a resilient grip on the sheath layers. As shown the socket 15 has two side lugs 16, which are spot welded to the sides of the clip 15. The sides of the clip 14 converge slightly from the closed to the open end thereof, the bottom edges being turned slightly outwards. In a modification the handle socket is pivoted to a bracket fixed to the clip. In another modification the socket is in two aligned parts one of the parts being supported above the other by two stays. The socket is nailed to the handle through apertures 17. The thrums 10 are disposed between the two side walls of a textile sheath 11 and are secured by sewing, the sheath being subsequently folded about a longitudinal line and the two sides of the sheath sewn together by a row of stitching 13. The thrums may be impregnated with a solution of oil or wax.
Patent GB-117202-A (GB)
Title: Air Propeller.
Inventor: HOWORTH FRANKLIN WISE
IPC: B64C11/20
Filed: 1917-11-08
Abstract: 117,202. Howorth, F. W., (Mott, S. D.). Nov. 8, 1917. Metals, depositing; moulds.-In propellers for aircraft, a metallic shell is deposited electrolytically on a wooden core re-inforced with studs 3 or on a wax, resin, &c. model similarly strengthened. Fig. 3 shows the shell 4 deposited on a wooden core 2 having the transverse studs 3. Additional studs or screws 5 are fitted to the boss.
Patent GB-1143924-A (GB)
Title: Improvements relating to soil sampling
IPC: E21B25/06
Filed: 1966-04-14
Abstract: 1,143,924. Non-metallic tubes. STICHTING WATERBOUWKUNDIG LABORATORIUM. 14 April, 1966 [14 April, 1965], No. 16443/66. Heading F2P. [Also in Divisions B2 and E1] In a method of manufacturing an impermeable hose for taking an undisturbed soil sample, the hose being made of a closed, fine mesh network or knitted fabric of substantially non-elastic, e.g. nylon, yarns and being deformable longitudinally to a lesser extent than in a direction transversely of the hose and the transverse deformability being inversely dependent on longitudinal tensile load, the hose is pulled through a bath of liquid comprising a substantially elastomeric substance to form a coating on the hose, the coated hose then being maintained under longitudinal tensile load at the desired diameter during stabilization of the coating. The coating liquid may contain a solution or an emulsion of a natural or synthetic rubber or a mixture thereof, a non-elastic thermoplastic substance, and a plasticizer; a polymerization catalyst may be added. As shown, the hose is secured to a disc 21 and drawn upwardly by a weight 24, through a tray 11 filled with liquid coating material which is cured by compressed air passing between tubes 15, 16 and heated by an element 19, the air being exhausted through the tube 16. Infra-red heaters 20 may also be employed, and scrapers 25 maintain a uniform thickness of coating. The coated hose may, alternatively, be wound on a reel after passing over an internal guide ring.
Patent GB-933000-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/71
Filed: 1961-05-05
Abstract: 933,000. Friction clutches. FICHTEL & SACHS A.G. May 5, 1961 [June 30, 1960], No. 16458/61. Class 80 (2). [Also in Group XXXII] To render helical pressure springs in a friction clutch more resistant to the buckling effects of centrifugal force, the intermediate coils are of a smaller diameter than the end coils and may be formed either to one diameter, to stepped diameters or (Fig. 3, not shown) a hyperbolic curve.
Patent GB-579713-A (GB)
Title: Improvements in double pole electric switch mechanism
IPC: H01H23/16
Filed: 1944-08-30
Abstract: 579,713. Tumbler switches. REVO ELECTRIC CO., Ltd., FELTON, A. E., and CRAWFORD, A. Aug. 30, 1944, No. 16469. [Class 38 (v)] A double-pole switch suitable for controlling a plurality of circuits with a bank of fuses, comprises an insulating hooded lever a which is pivotally mounted between two brackets c and pivotally carries at a<4> in an offset manner a link a<2>, the other end of which is pivotally and slidably mounted by a pin a<3> passing through slots c<4> in the brackets c. The ends of the pin a<3> bear on the undersides of two spring- urged contacts c<1> which are guided by pins c<2> and bridge fixed contacts b<1>. When the lever a is moved to the " off position, the link a<2> is lifted upwards together with pin a<3>, thereby lifting contacts c<1> and breaking the circuits. The lever a is situated between the two bars of the insulated mounting b for the fuse contacts.
Patent GB-1371626-A (GB)
Title: Test measuring in knitting machines
IPC: D04B37/00
Filed: 1972-05-12
Abstract: 1371626 Knitting machines HATRA 12 May 1972 [22 May 1971] 16500/71 Heading D1C [Also in Division Gl] A device for measuring the movement of a needle at stitch formation in a knitting machine comprises two arms 1, 2 pivoted at 3 and jaws 6, 7 the jaw 6 having two jaw members each being insertable between the needles to abut the verge of the needle cylinder and the jaw 7 engaging the needle hook, a spring 5 which urges the jaws 6, 7 towards each other and a scale 4 being provided on the arms to measure the distance moved by the needle relative to the needle cylinder at each stitch cam. The device is inserted when the machine is stationary and the machine is moved manually through the necessary distance. The operation is repeated at each stitch cam to determine the setting thereof.
Patent GB-556294-A (GB)
Title: Improvements in or relating to wind and rain screens and the like
IPC: G02C11/08
Filed: 1942-11-23
Abstract: 556,294. Wind or rain screens. LEE, R. W. Nov. 23, 1942, Nos. 16523 and 17351. [Class 20 (iii)] [Also in Group XX] A wind or rain screen comprises one or more transparent members mounted on a pair of goggles and provided with vanes, fins, or the like, so that they are rotated by the wind; the members may be discs or cones. As shown in Fig. 5, a transparent disc 1 having wind vanes 2 is carried by an axle 23 within a ball race 24 mounted in a hub 21, and the hub is attachable to the front of motoring goggles, Fig. 4, moulded in one piece of transparent material. The hub is formed with a shoulder 26 adapted to engage a groove 18 in a recess 17 formed to receive the hub, and a projection 28 on a spring 27 engages a notch 19 to retain the hub in the recess. The goggles comprise a front 14, a side portion 15 having vents 20, and a flange 16 to which sponge rubber, or felt, may be attached. A modification is described in which the disc is rotatable in front of an open-ended transparent frame shaped to fit the face of the wearer. In other modifications the single disc may be replaceod by a cone, or by two discs one in front of each eye, mounted on ball bearings in peripheral grooves.
Patent GB-686092-A (GB)
Title: Improvements in or relating to stroboscopes
IPC: H05B41/34
Filed: 1948-06-21
Abstract: 686,092. Stroboscopes. MULLARD RADIO VALVE CO., Ltd., and KELLIHER, M. G. July 21, 1949 [June 21, 1948], No. 16627/48. Class 97 (i). Also in Group XL (c). Triggering apparatus for a gas-discharge tube which is used as a stroboscope to generate luminous flashes of short duration comprises a circuit for generating steep pulses of the required repetition frequency which are applied to the control grid of a valve to render it alternately conducting and non-conducting thus triggering the gas-discharge tube. In the Figure a sinusoidal waveform of the required frequency is generated by the oscillator comprising valve 15 and applied to a " squarer " stage 14 which is D.C. coupled to the trigger valve 11. The stroboscope gas tube 1 has a trigger electrode 8 which is connected to E.H.T.+ via resistor U and which is connected to E.H.T.- via valve 11 and neon 30 to flash the tube 1 each time the valve is rendered conducting by the square pulse applied to its control grid. The time constant of network 6, 7 is preferably approximately equal to the reciprocal of the flashing frequency, capacitor 7 being changed from the mains supply rectified by the rectifier 4
Patent GB-1267543-A (GB)
Title: Apparatus for testing the fastness to light of test pieces
Inventor: KOCKOTT DIETER
IPC: G01N21/01
Filed: 1969-03-31
Abstract: 1,267,543. Lamps. ORIGINAL HANAU QUARZLAMPEN G.m.b.H. 31 March, 1969 [8 April, 1968], No. 16649/69. Heading F4R. [Also in Division G2] An arrangement for providing a uniform intensity of illumination over a cylindrical surface concentric with an elongated light source 12 comprises mirrors 14 positioned at the ends of the light source. The mirrors are inclined at an angle of between 90 degrees and 105 degrees so that test pieces 18 arranged on the cylindrical surface are uniformly illuminated. Instead of using mirrors, the ends of the light source may be looped to increase their light emission or additional light sources may be provided at each end of the main source 12. An arrangement is also described in which the mirrors are replaced by a number of discs closely spaced along the axis of the source 12. The discs act as collimators to ensure a uniform intensity of illumination along the length of the test pieces.
Patent GB-166690-A (GB)
Abstract: 166,690. Shrigley, J. April 20, 1920. Circular machines.-Relates to mechanism for operating the " Griswold " stocking knitter by foot or by power. On the driving shaft d<2> is a balance wheel e having a grooved rim e<1> for the reception of a driving belt. The wheel e may also be driven from the treadle f by a connecting- rod o and crank-pin o<1> and belt h. Two plates l, l' pivoted together at m are attached, one to the treadle and the other to an adjustable rod k the upper end of which is hooked to a spring j. A driving wheel g on the wheel e is connected by the belt h to fast and loose pulleys i<1>, i, the ratio of the diameter of the wheel g to that of the pulleys i<1>, i being 5: 4. The belt h is shifted from one pulley to the other by means of a hand-operated lever p pivoted at p<1> and passing through a slotted plate Q, the lever being retained in the notches Q<1> or Q<2> when the belt is on the pulleys i or i<1> by means of a spring r. The bobbins are supported on a table c<1> with rearward arms c' which slide in between the under side of the platform head c' and supports c<3>. A brake is - applied to the cam cylinder d<1> by pressing in a spring lever t carrying a brake plunger y and pivoted at t<1>. The spring x normally holds the plunger y out of action.
Patent GB-653465-A (GB)
Title: Improvements in sectional electrolytic cells of the diaphragm type
IPC: C25B9/18
Filed: 1948-06-22
Abstract: 653,465. Electrolytic cells. INTERNATIONAL ELECTROLYTIC PLANT CO., Ltd., WOOD, W., and BOWEN, C. E. June 22, 1948, No. 16755. [Class 41] A sectional electrolytic cell unit of the diaphragm type adapted for multiple assembly with other units comprises two frames, one for laterally enclosing an anodic compartment containing the anode, and the other for laterally enclosing a cathodic compartment, a perforated. cathode plate clamped (together with the diaphragm if desired), between the adjoining faces of these frames, a division plate adapted to be clamped against the opposite face of one or of each frame for separating the cell unit from an adjacent unit, or as a closure, and tubular manifold sections separate from the frames, each section substantially equal in length to the combined thickness of the components mentioned above and adapted to communicate if required endwise with similar sections of adjacent cell units. In the multiple cell construction shown, for alkali-chlorine electrolysis, each cell unit comprises carbon anodes 1, a perforated steel cathode 2 and an asbestos diaphragm 3, and is enclosed by frames 5 and 6. The units are separated by division plates 4 from which the anodes may be suspended. The units and plates are clamped by rods between frames 9 which also clamp together manifolds for circulating brine through the cell units and for withdrawing caustic effluent and gases. The manifold 11 for introduction of brine through a pipe 11e is provided with ports 11b, flow therethrough being controlled by valves 11c. Manifold 12 for withdrawing spent brine and evolved chlorine is provided with an outlet pipe 12g and inspection plugs 12c. Manifold 13 for removal of caustic effluents and hydrogen is provided with outlet pipes 13e, 13g. The cathodes 2 and division plates 4 are provided with lugs for connection to the source of electric power. In a modified arrangement shown in Fig. 7, the cathode 2 is provided with stems 2b which depend into mercury cups 7a provided on the anode 1 of the unit below. The division plates 4 are non-conducting. External leads for electric supply are fitted only to the anode of the top cell and the cathode of the bottom cell.
Patent GB-296365-A (GB)
Title: Improvement in steel retainer for rock drills
IPC: B25D17/08
Filed: 1928-06-09
Abstract: 296,365. Ingersoll-Rand Co., (Assignees of Bayles, L. C., and Tuttle, G. G.). Aug. 30, 1927, [Convention date]. Percussive drills. - A tool retainer comprises a cap T having a groove S adapted to allow the collar Q<1> to pass, and a handle V for turning the cap into a position to block the collar. The cap is mounted by means of a pivot bolt c in an extension Q of the front head and is fixed by a recessed key j and spring o.
Patent GB-496191-A (GB)
Title: Improvements relating to engine telegraphs for motor ships
IPC: G08B9/08
Filed: 1938-06-07
Abstract: 496,191. Order-telegraph apparatus. BLACHE, H. H., and REBBECK, F. E. June 7, 1938, No. 16822. [Class 118 (ii)] The pointer of an engine room telegraph is movable over the same dial as a pointer operated by the manoeuvring gear of a reversible internal-combustion engine for ships, the manoeuvring gear being of the type wherein movement of a hand wheel or lever in one direction or the other from a central stop position successively actuates a reversing gear, starts the engines on compressed air and then admits fuel and at the same time cuts out the starting gear. The order telegraph transmitter comprises a wheel having a number of handles b the main handle bl of which carries a spring-loaded locking grip co-operating with a notched locking sector c. The wheel carries a pointer d which co-operates with a dial having the necessary orders for " Ahead " and " Astern. " As shown the movements of the wheel are transmitted to the receiver in the engine room by mechanical shafting f<3> but any known method of transmission, e.g. hydraulic or electric may be employed. Fig. 4 shows the combined order telegraph and manoeuvring control gear for use in the engine room. The transmission shaft f<3> operates through bevel gears m<1>, m<2> an order telegraph pointer m<4> over a dial k<1> carrying orders similar to those shown in Fig. 1. The manoeuvring gear comprises a wheel w which carries a pointer k movable over the same dial k<1>, the arrangement being such that the pointer k must be aligned with the pointer m<4> in order to comply with the order transmitted. The main handle h<1> of the wheel w is provided with a spring locking grip h<2> which co-operates with a locking sector i. The wheel w is mounted on a shaft l<1> which effects the various engine controls, including that of the reversing gear, by a cam l and push rod l<5>, which is operable into either of two positions corresponding to " Ahead " and "Astern." When the wheel is moved into a " Reverse " position the wheel is automatically locked until the reversing gear is fully operated. The rod l<5> controls contacts l<7>, l<8> which are connected to indicator lamps g<3>, g' on the bridge and engine room telegraphs. Revolution direction and counter indicators may also be provided on the telegraphs. The manoeuvring gear may be operated from the bridge telegraph by the provision of a manually-operated pin o<2>, which couples the wheel w with a disc m<3> carrying the order telegraph pointer. The pin o<2> is normally locked in the withdrawn position by a pin o' riding in a right-angled slot p<2> in the pin o<2>, but is engageable under the force of a spring o<5> in the hole o<3>, when the pointers are in alignment, by turning the pin through 90‹ by the handle o<6>. A cam p' operates a spring- controlled rod p<6> to unlock the wheel w when the gear is adapted for operation from the bridge. The pin o<2> controls a switch n, n<1>, n<2> which operates indicator lamps g<1>, g<2>.
Patent GB-773009-A (GB)
Title: Apparatus for use in forming die-castings from high melting point metals
IPC: B22C23/02
Filed: 1955-06-10
Abstract: 773,009. Casting-machines. PLASCO, Ltd. June 10, 1955 [Oct. 4, 1954], No. 16830/55. Class 83 (1). [Also in Groups XXVI and XXVIII] A die-casting machine, Fig. 1, comprises a gooseneck having a pump-chamber 25, a liner 26 embedded and anchored in the pumpchamber against displacement therefrom, and a piston 40 operating in said liner in the pressuredischarge of molten metal from the pumpchamber through a discharge nozzle 17 of the gooseneck, said line and said piston being composed of or faced with zirconium boride. The gooseneck-assembly is vertically adjustable by rack-and-pinion assembly 44, 45. In a modification, Fig. 2, the cylinder-liner comprises a body-portion 53 of metal, metal-alloy or ceramic-material encased in a jacket of sintered zirconium boride, and in a further modification the piston has a body-portion faced with zirconium boride. The nozzle 17 is also of zirconium boride, or an inexpensive alloy with its bore faced therewith. The gooseneck and the pot are composed of a ceramic, such as silicon carbide.
Patent GB-632525-A (GB)
Title: Alkylation of paraffin hydrocarbons
IPC: C07C2/62
Filed: 1947-06-26
Abstract: An isoparaffin is reacted with an olefin under alkylating conditions in the presence of a catalyst consisting essentially of hydrogen fluoride as its active ingredient.  Preferably, a mixture of liquid hydrogen fluoride and isoparaffin is agitated, and olefin and isoparaffin introduced in batch or continuous operation.  Hydrogen fluoride after separation may be recycled, and the hydrocarbon layer fractionated.  Isobutane and isobutene are reacted to give octanes, e.g. 2,2,4-trimethyl pentane, using hydrogen fluoride, which may contain up to 10 per cent of water, at various temperatures such as room temperature or below or up to 100 DEG  C., and using various molar ratios.  Alkyl fluorides formed may be passed over fluorides such as those of calcium or aluminium to give hydrogen fluoride and olefins which mixture, with solid sodium or potassium fluoride, gives hydrogen fluoride addition compounds, liberating hydrogen fluoride on heating.