baber/WOPTO huggingface dataset:
Patent GB-958618-A (GB)
Title: Improvements in or relating to electrically heated ovens
Inventor: MACKAY DONALD
IPC: A47J37/06
Filed: 1962-03-28
Abstract: 958,618. Bakers' ovens. R. & A. MAIN Ltd. March 22, 1963 [March 28, 1962], No 11982/62. Heading A2A. [Also in Division H5] A multi-deck baker's oven has electrical heating elements 17, 18 in or on top and bottom walls 10, 14 and one or more removable shelves 19 incorporating electrical heating elements 20 with plug or socket connections 23 to electricity supply wiring in oven side-wall 12. The oven temperature is thermostatically controlled and its width considerably greater than its height. Top and bottom insulation layers 17a and 18a are provided.
Patent GB-451409-A (GB)
Title: Improvements in or relating to method of and apparatus for welding metallic tips to metallic bases, and the products resulting therefrom
IPC: B23K11/00
Filed: 1934-12-29
Abstract: 451,409. Welding metallic tips to pen nibs and other metallic bases. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Pfanstiehl Chemical Co. ; Waukegan, Illinois, U.S.A.) Dec. 29, 1934, No. 12337/36. Divided out of 452,861 under which a Specification was laid open to inspection under Sect. 91 of the Acts, July 15, 1935. [Classes 83 (ii) and 83 (iv)] [See also Group XI] In a method of welding a tip to a metallic base the tip is first tacked to the base, providing poor heat conductivity between tip and base, and subsequently metal adjacent to the tack is fused whereby the tip is welded to the base. The nib is carried by a holder 13, Fig. 4, provided with copper jaws 12, and a stop collar 26 which serves for both tacking and welding. The former operation, carried out in apparatus, Fig. 1, comprises a stand 15, 17 for the hard metal tip 11 a sleeve 14 for the holder to slide vertically in and connections which provide for an electrical discharge through the nib and tip when the contacts 24 are momentarily connected by the collar 26 passing the projection 25, as the former falls in the sleeve to connect the nib and tip. The welding apparatus, Fig. 3, comprises a glass chamber 30, which may be made of the glass known under the Registered Trade Mark " Pyrex," set in a frame and adapted to be supplied with hydrogen' or other readily ionizable gas through the tube 31. A filament or filaments 29 are provided within the glass chamber and are so connected with an electric supply that an arc is formed to embrace the tip and nib to weld these together, the metal of the nib may fuse and surround the tip without the latter fusing or the tip may be fused as well as the nib in which case, a spherical tip is formed at the end of the nib. The electrical connections for the welding operation may comprise filaments 29, Fig. 7, which are heated by a low voltage high current supply from transformers 45 and across which an arc is struck which embraces the tip, the current supply of the arc being delivered by a transformer 44 which is provided with a magnetic shunt 47. Alternately three filaments connected to three phase supply lines or a single filament with the tip and nib forming the other electrode may be used.
Patent GB-553133-A (GB)
Title: Improvements in and relating to the feeding of biscuits or other sweetmeats to chocolate enrobing machines and the like
IPC: A23G3/20
Filed: 1941-09-24
Abstract: 553,133. Conveyers. TUNLEY, A. A., and BAKER PERKINS, Ltd. Sept. 24, 1941, No. 12388. [Class 98 (i)] Independent supporting aprons are conveyed in an endless path at two rates of of speed, the transporting mechanism consisting of two endless chain conveyers from one to the other of which the aprons are transferred in their circuit. A pair of parallel chains 6 fitted with lugs 8 at intervals passes round adjustable sprockets 10 at the feeding end of the conveyer frame, sprockets 11 toward the delivery end of the frame, and adjustable sprockets 13 and fixed sprockets 12 both located beneath the bed 1 of the conveyer. A similar pair of parallel chains 7 fitted with lugs 9 passes over sprockets 18 and round end sprockets 14 to give an over-bed traverse, the return being round sprockets 15 and 16 below the bed 1, an adjustable pair of sprockets 30 bearing on the rising stretch of the chain to effect tensioning. The aprons 2a, 2b, 2c have each a cross bar heading 3 which is caught up by the lugs 8 to transfer them in close formation under the feeding device, and then by the faster moving lugs 9 at the point of overlap of the two conveyers 6, 7 to advance the batch of articles on the apron away from those on the following aprons, thus bringing the articles to the delivery end D in separate lots. Each apron in passing round the delivery edge is steered by guides 26 and then falls on bars 4 with or without pressing shoes to keep the apron taut. The bars 4 give place to more widely spaced bars 5 toward the feed end F, so that the tail of the apron drops down therebetween and ensures the heading 3 of the following apron coming beneath same when it reaches the bed 1. A guide 35 steers the heading 3 round the feed end F. The drive from power shaft 17 is through a lay-shaft 125 bevelgeared at 19, 20 to a shaft 21 carrying the sprockets 15, the shaft 21 driving the shaft 22 carrying the sprockets 11 for the chains 6 through chain-and-sprocket gearings 23, 24. The bed 1 may consist of parallel bars, and the apparatus is stated to be particularly applicable to the feeding of biscuits or other sweetmeats to chocolate enrobing machines &c.
Patent GB-400931-A (GB)
Title: Improvements relating to sheet feeding apparatus for printing machines and the like
IPC: B65H3/08
Filed: 1932-04-29
Abstract: 400,931. Feeding sheets. CRABTREE & SONS, Ltd., R. W., Water Lane, EVANS, A. B., 7, Woodland Grove, both in Leeds, and TAYLOR, H. M., Maitland, Main Street, Scholes, near Leeds. April 29, 1932, No. 12389. [Class 100 (i).] For feeding sheets of metal, cardboard, &c. to printing and like machines, the sheets are operated upon at the front and back by suction separators d<3>, preferably two abreast, which lift the top sheet completely from the pile and then are given a translatory movement to carry the sheet into the action of.feed rollers a, c, of which the rollers c are rubber-tyred and carried by spring-pressed levers c<1>. The suction separators are raised by a lifting bar f pivoted to. levers f<1> which are oscillated by a cam g on a shaft b, the cam g having a part g<1> to give an extra lift to the separators which are fitted with runners d<4> engaging the bar f. The translatory movement of the suction separators is also effected by a cam k on the shaft b. The cam k oscillates a lever connected to a rod j<1> which reciprocates brackets h on a guide rod i, the separators being mounted in the brackets h in such manner that they can slide vertically relatively thereto but are prevented from rotation therein.
Patent GB-611330-A (GB)
Title: Improvements in or relating to thermionic amplifier control and modulating stages and the like
IPC: H03G1/00
Filed: 1946-04-25
Abstract: 611,330. Automatic volume control; valvemodulating circuits. SVENSKA AKTIEBOLAGET GAS-ACCUMULATOR. April 25, 1946, No. 12518. Convention date, Oct. 28, 1944. [Class 40 (v)] A control or modulator stage comprises at least two valves; a multi-grid valve having an outer grid to which the signal to be controlled or the carrier voltage is applied and an auxiliary valve preferably a pentode having its cathode and anode impedance wholly or in part in common with the main valve and adapted to -supply current to the anode circuit of the main valve, one valve having a control grid to which the control or modulating voltage is applied and the other valve a control grid connected so that the emission current decreases when that of the first-mentioned valve increases, thereby counteracting variations in the steady anode voltage caused by the control or modulation voltage. In the Figure, a main valve 1 is connected with its anode and cathode in parallel with an auxiliary valve 2, the control or modulating voltage being applied to terminals 16 and the carrier or signal voltage to terminals 15, the output being derived from terminals 17. The valve 1 should preferably have a variablemu characteristic with respect to signals applied to control grid 4. The auxiliary valve 2 delivers to the common anode circuit a current varying in the opposite sense to that of the main valve 1, thus compensating for anode current changes which would otherwise be caused by the control action of valve 1. The screen-grid voltages are given such a value and the valve characteristics so chosen that the steady anode voltage of the stage is automatically maintained substantially constant over a wide control range.
Patent GB-916017-A (GB)
Title: Improvements in or relating to means for regulating three phase voltages
IPC: G05F1/34
Filed: 1959-04-14
Abstract: 916,017. Automatic voltage control. SORENSEN-ARD A.G. April 14, 1959 [April 28, 1958], No.12549/59. Class 38 (4). Three single-phase voltage regulators are linked to stabilize a three-phase supply. Each regulator comprises a saturable reactor controlled in an undisclosed manner by a saturated diode, the filament of which is energized by the voltage to be stabilized. The three saturable reactors 11a 12a, 13a are connected one in each line in series with the 3-phase supply 7, 8, 9. Three voltage transformers 17, 18, 19 have their primaries delta-connected to the output of the supply, and their star-connected secondaries energize the filaments of the three saturated diodes 11b, 12b, 13b. The filaments are deltaconnected so that each is energized by the vector sum of two phase voltages, and acts to control the reactor in series with the common phase, e.g. reactor 11 in line 7 is controlled by the vector sum of the voltages between lines 8 and 7 and 9 and 7.
Patent GB-453175-A (GB)
Title: Improvements in suction cleaning tools
IPC: A47L9/04
Filed: 1935-04-26
Abstract: 453,175. Vacuum cleaners. McCARDLE, L. F., 94, Baker Street, London. April 26, 1935, Nos. 12565 and 19846. [Class 8 (i)] Within the nozzle 1 of a vacuum cleaner a carriage 7 is movably, e.g. slidably, mounted, and carries a rotary brush or beater 23 and a pair of wheels 19 which when brought into contact with the floor by movement of the carriage actuate the brush etc.; pinions on the brush shaft engaging internal teeth on the wheels. The carriage is hollow and communicates with a hollow handle capable of a limited angular sliding movement on the carriage; pressure on the handle depresses the carriage. A slit or row of holes in the upper part of the nozzle plate may allow inlet of air to clean the brush &c. The carriage may alternatively be pivotally mounted on the nozzle casing, and actuated by a Bowden wire on the handle.
Patent GB-1452801-A (GB)
Title: Open-end spinning machines
IPC: D01H4/08
Filed: 1974-03-21
Abstract: 1452801 Open end spinner F STAHLECKER and H STAHLECKER 21 March 1974 [22 March 1973] 12619/74 Headings DID and D1N At each spinning station of an open-end spinner, the swivelling of a feed roller housing about an axle parallel to a drive shaft disengages a housing-mounted roller drive gear from a shaft gear. As shown, Fig. 2, when housing 4 enclosing feed and opening rollers 10, 11 is pivoted downwards about axle 9, gear 14 on feed roller drive shaft 15 is disengaged from gear 13 on shaft 8. Gears 13, 14 may be a worm and worm wheel. To assist gear meshing, gear 14 may have tapered end 14a, Fig. 4, for first engaging gear 13, which end may be separate, Fig. 5. Alternatively, Fig. 7, a plain, preferably tapered, preferably elastic ring 14a 2, e.g. of plastics material, may first engage rotating gear 13 to accelerate gear 14.
Patent GB-988353-A (GB)
Title: Improvements in or relating to air heaters, particularly for vapour generator furnaces
IPC: F23M20/00
Filed: 1964-03-25
Abstract: 988,353. Air heaters. BABCOCK & WILCOX CO. March 25, 1964 [March 29, 1963], No. 12649/64. Heading F4S. In an air heater for the combustion air of a steam generator wherein the air passes serially through three sections of the heater, cold-end corrosion is prevented by passing a minor proportion of hot flue gas directly to the end section of the heater adjacent the air inlet and then combining the gas flow from this section with the main flow of flue gas passed through the section of the heater adjacent the air outlet for flow through the intermediate section. A steam generator furnace 10 is fired by cyclone furnaces 24, the combustion gases flowing through a lateral pass 17 and downpass 19 containing a primary superheater 30 and economizer 31 to an outlet 34 whence they flow through the metal tubes 41C of an air heater section 52 into an ash hopper 55. Flue gases at a higher temperature drawn from a gap 32 between the primary superheater and economizer flow through a duct 77 to the inlets of tubes 41A of a section 50 of the air heater adjacent the air inlet and discharge therefrom into the hopper 55. The two flows mix in the hopper and flow upwardly through the tubes 41B of the intermediate section 51 of the air heater to a dust collector 81. Combustion air is driven by a fan 44 through the sections 50 ... 52 to the windbox 48 of the cyclone furnaces. The by-pass duct 77 is dimensioned or provided with dampers so that about 10% of the total flue gas flow enters the section 50. By passing this hot gas through the tubes 41A nearest the cold air inlet cold-end corrosion is substantially eliminated. Specification 771,924 is referred to.
Patent GB-318304-A (GB)
Title: Improvements in rail and road vehicles for transporting rails, girders, timber and the like
IPC: E01B29/16
Filed: 1929-02-01
Abstract: 318,304. Craig, D. Feb. 1, 1929. Roofs; sides.-A rail or road vehicle A is provided with a roof T carried on fixed supports C at one side and hinged or detachable supports (not shown) at the opposite side, and with brackets E secured to the floor carrying winding gear, the hinged or detachable supports, being moved out of the way for loading rails, girders, timber &c. on to the vehicle. The sides R of the vehicle are hinged to form a step or platform and hand-rails (not shown) are provided.
Patent GB-400982-A (GB)
Title: Improvements in electric light reflectors
IPC: F24S23/74
Filed: 1932-05-03
Abstract: 400,982. Trough-shaped reflectors. STOCKWELL, E. J., 1, Ethelbert Road, Bromley, Kent. May 3, 1932, No. 12765. [Classes 75 (ii) and 75 (iv).] A trough-shaped reflector M is formed with a slot F whereby it may be adjustably secured to a bracket G by means of a binding screw H. An additional reflecting surface I may be similarly secured to the upright portion of the bracket. The reflector M may be provided with a detachable wiring channel L and with a groove A in which a lamp holder B may be secured in any desired position by means of a set-screw D engaging in a tongue C on the holder. Alternatively, the holder may be secured to the reflector by means of holes formed in pairs at regular intervals along the length of the reflector.
Patent GB-1144131-A (GB)
Title: Sliding contact bearings and journals formed with dirt ejecting oil ducts
IPC: F16C33/02
Filed: 1966-03-23
Abstract: 1,144,131. Bearings. KARL SCHMIDT G.m.b.H. 23 March, 1966 [25 March, 1965], No. 12917/66. Heading F2A. In a bearing member a lubricant supply duct 3 extends through the member and has an edge 4 at its outlet sloping towards an end of the bearing, so that the lubricant supplied through duct 3 washes dirt particles towards said end of the bearing. In Fig. 1, half shell 1 has grooves 5, 6 nearer said end of the bearing than duct 3, which grooves assist in directing dirt particles to the end. In Fig. 3 (not shown), a duct (12) has edges sloping towards each end of the bearing to flush dirt from both ends. Bearing members for supporting reversible journals are also disclosed (Figs. 12 and 13, not shown).
Patent GB-996150-A (GB)
Title: Improvements in convertible bed mechanisms
IPC: A47C19/12
Filed: 1962-04-04
Abstract: 996,150. Bed-settees. CASTRO CONVERTIBLE CORPORATION. April 4, 1962 [April 6, 1961], No. 12986/62. Heading A4J. A convertible bed mechanism comprises a stationary frame 12 and four sections 14, 16, 18 and 20 pivoted together and adapted to unfold into a straight line and to fold into a flattened Z configuration within the frame 12, links 38 being provided between the frame 12 and section 14 within the frame and a pair of arms 44, 46 pivotally connecting the section 18 to an upper side corner of the section 16. Each arm 44, 46 is provided with a projecting tab 52, Fig. 6, to support the underside of the section 16 when the bed mechanism is unfolded. Legs 60, 62 are attached to the section 20. Inwardly projecting stops 66 in the legs 62 are provided to rest on the frame 12 and support the seat 20 when the bed is folded. Curved leaf springs 64 are mounted between the sections 16, 18 to aid in folding and unfolding the bed.
Patent GB-866631-A (GB)
Title: Photopolymerization of compounds containing vinyl groups
IPC: C08F2/50
Filed: 1959-04-16
Abstract: A normally liquid or normally solid compound containing a vinyl group is photopolymerized by irradiating the compound in the presence of water with radiation of a wavelength ranging from 10-1 to 10-10 cm., particularly visible or ultra-violet light, using a small amount of a light-sensitive photographic silver salt emulsion as catalyst. Radiation may also be by X-rays or gamma rays.  The vinyl compound may be acrylamide, acrylonitrile, N-hydroxyethyl acrylamide, methacrylic acid, acrylic acid, calcium acrylate, methacrylamide, vinyl acetate, methyl methacrylate, methyl or ethyl acrylate, vinyl benzoate, vinyl pyrrolidone, vinyl methyl, vinyl butyl, vinyl isopropyl or vinyl isobutyl ether, vinyl butyrate, butadiene or mixtures of ethyl acrylate with vinyl acetate, acrylonitrile with styrene or butadiene with acrylonitrile.  Cross-linking agents such as N, N1-methylene-bis-acrylamide, triallyl cyanurate, divinyl benzene, divinyl ketone and diglycol diacrylate may also be present. The photographic silver salt emulsion may comprise gelatine, polyvinyl alcohol, carboxymethyl cellulose, methyl cellulose, starch, polyvinyl pyrrolidone, polyacrylamide or casein and a light-sensitive silver salt such as silver bromide, chloride, iodide, chlorobromide, bromoiodide, chlorobromoiodide, oxalate, tartrate or citrate, silver benzene sulphinate, or the silver salt of 1-phenyl-5-pyrazolone or eosin; optical or chemical sensitizers may be incorporated. Polymerization may be carried out in aqueous solution or in water-in-oil or oil-in-water type emulsion.  Specifications 795,042, 858,037 and 864,060 are referred to.
Patent GB-560603-A (GB)
Title: Apparatus for measuring the speed of projectiles
IPC: G01P3/68
Filed: 1942-09-15
Abstract: 560,603. Electric signalling and control systems. FRANCIS, E. L. (Ges. zur F÷rderung der Forschung auf dem Gebiete der Technischen Physik an der Eidgenossischen Technischen Hochschule). Sept. 15, 1942, No. 13032. A Specification was laid open to inspection under Sect. 91 on Sept. 15, 1942. [Class 40 (i)] [Also in Group XL] Photo - electric apparatus for measuring the speed of projectiles utilizes an electron multiplier for controlling means for recording or measuring the interval of time between light impulses produced when the projectile passes definite points in its trajectory. In Fig. 1, mirrors 7, 8, 9 and photo-electric electron-multipliers 13, 14 are carried by a housing 6 which can be adjusted to a position parallel with the trajectory. As the projectile passes points 4, 5, a light impulse is reflected by the mirrors 8, 9 and 7, 9 respectively to the multipliers 13, 14. In a modified arrangement, Figs. 2, 3 (not shown), the optical means for picking-up the light impulses are arranged parallel to each other at a distance apart, time delay circuits being used between one of the multipliers and a flip-flop valve circuit (Kalirotron) which has two stable conditions and controls an indicator. The timedelay circuits may be so chosen that an indication is given of the deviation of projectile speed from a standard speed.
Patent GB-566441-A (GB)
Title: Improvements in fluid seals
IPC: F16J15/36
Filed: 1943-08-12
Abstract: 566,441. Stuffing - box substitutes. GENERAL MOTORS CORPORATION. Aug. 12, 1943, No. 13038. Convention date, Sept. 2, 1942. [Class 122 (v)] A seal for relatively rotating members comprises a ring 38 having a press fit in the rotating part 20, e.g. a pump impeller, a sealing washer 44 pressed axially by a spring 46 into contact with a fixed shoulder 48 and rotatable with, but axially movable relatively to, the impeller, and a resilient sleeve 32 vulcanized or otherwise secured to the ring 38 and washer 44. The middle portion of the sleeve is of reduced thickness.
Patent GB-1298103-A (GB)
Title: Amplitude-modulated power amplifier with reduced phase modulation
IPC: H03C1/36
Filed: 1970-03-18
Abstract: 1298103 Amplitude modulation INTERNATIONAL STANDARD ELECTRIC CORP 18 March 1970 [21 March 1969] 13058/70 Heading H3R In a class C transistor amplifier in which an amplitude modulating signal is applied to the collector of the amplifier, undesired phase modulation is reduced by amplitude modulating the carrier signal used to drive the amplifier. Transistors Trs 31, Trs 32 Fig. 1 are connected in parallel and driven by transistors Trs 1, Trs 2 in cascade, the collectors being fed from terminal 2 with combined supply V s  and modulating # voltages. Carrier signal is applied from terminal 1 to the base of transistor Trs 1 via an attenuator comprising a series-connected PIN diode, which is driven from terminal 2 via a voltage-dropping Zener diode ZD. In a second embodiment transistor Trs 2, Fig. 2 is driven by transistor Trs 1, the collectors being fed from terminal 2 with combined supply V s  and modulating # voltages, via a voltagedropping Zener diode ZD, Transistor Trs 1 is driven with a carrier signal via a further transistors Trs 4, the collector voltage of which is derived from terminal 2 via resistor R1; the base bias also derived from terminal 2 via resistor R1; the base bias is also derived from terminal 2 via resistors R1, R2.