baber/WOPTO huggingface dataset:
Patent GB-159603-A (GB)
Title: Improvements in and relating to electrical signalling systems
IPC: H04B1/16
Filed: 1919-12-01
Abstract: 159,603. British Thomson - Houston Co., Ltd., (General Electric Co.). Dec. 1, 1919. Thermionic detectors; audible reception of unmodulated continuous waves. - A wheatstone-bridge arrangement comprising a thermionic valve in one of the balanced arms is employed to detect signalling eurrents, particularly of a frequency below audibility; it may also serve to receive continuous-wave wireless radiators without heterodyning or the use of a " ticker." A source of current 13 of audible frequency is normally balanced across the arms 1 - - 4 so that no note is heard in the telephones 16. When signal energy flows through a resistance 22, the potential on the grid 8 of a valve 5 is varied and alters the resistance of the plate circuit of the valve, thereby upsetting the bridge balance, so that the note from the source 13 is heard in the phones so long as the signalling current flows. A second valve may be inserted in the arm 2 nf the bridge to facilitate balancing. A valve amplifier may be used to augment the note in the telephones.
Patent GB-1150213-A (GB)
Title: Interchangeable Camera-Lens Mount.
Inventor: FRIEBE HERMANN
IPC: G03B17/14
Filed: 1966-07-04
Abstract: 1,150,213. Interchangeable lens mounts. VEB CARL ZEISS JENA. July 4, 1966, No.29937/66. Heading G2A. An interchangeable lens mount has a diaphragm 2 which, at the moment of release of the shutter of the camera to which the mount is attached, closes down to a preselected stop value and after exposure is re-set to its initial position, and a sensing needle 16 for the transmission of a preselected stop value from a diaphragm setting ring 10 to a calculating mechanism in the camera housing, the needle being movable to and fro for use with cameras having a calculating mechanism and being completely retractive into the lens mount for use with cameras without a calculating mechanism. This calculating mechanism processes the film speed value, the preselected diaphragm value, and a photo-electric exposure meter value obtained by either through, or outside, the lens metering, and finds the exposure time which is then transmitted automatically to set the shutter. For through the lens metering, the diaphragm setting ring is locked with a transmission ring 13, as shown. When the diaphragm value is set against a pointer 11 an inclined edge 13' causes the needle 16 to project out of the lens mount to a greater or lesser extent and this indicates the preselected stop value to the calculating mechanism. Depression of the shutter release causes a push rod 3 to be moved to the right, allowing a three armed lever 7 to pivot clockwise until the arm 7"' thereof contacts the ring 10 at a position depending on the selected diaphragm value. The arm 7' has moved so as to allow the diaphragm to close down to this value. After the exposure, the push rod 3 moves to the left and the diaphragm 2 returns to its initial position. For outside the lens metering, a ball 14 of the ring 13 locks in a recess 10"'. The diaphragm value is selected as before and the needle 16 will project a known amount from the mount, e.g. for a value f2À8, the needle projects 1 m.m., and will always project 1 m.m. for f2À8 irrespective of whether this lens is used, or another lens having a different diaphragm range. This amount, e.g. 1 m.m., is transmitted to the calculating mechanism which sets the shutter speed as before. For cameras without a calculating mechanism, the ball 14 locks in a recess 10"" and the needle touches the portion 13" of the ring 13, and remains wholly inside the lens mount whatever diaphragm value is selected.
Patent GB-654804-A (GB)
Title: Improvements in or relating to plungers, pistons and the like
IPC: F04B53/14
Filed: 1948-11-18
Abstract: 654,804. Pistons. KENNINGHAM, J. E. S. Nov. 18, 1948, No. 29949. [Class 122(i)] In a piston, the groove in which the piston ring is located, is provided with a stepped wearing ring or rings held against axial movement by a retaining ring and against radial movement by a step. A piston A is provided with one or more ring grooves D, and the faces 1, 2 of the groove are machined to increase the groove width and provide a recess 3. A stepped ring E is secured against the lower face thus formed by a spring-ring F divided at one point or by a non-spring ring F caulked into position or by a ring F formed in two halves. The upper face of the groove may be similarly treated. By this means a worn groove may be restored to its original size.
Patent GB-1261856-A (GB)
Title: Improvements in or relating to a rotary disc cutter for food cutting machines
IPC: B26D7/06
Filed: 1970-04-23
Abstract: 1,261,856. Rotary disc cutters. POPEIL BROS. Inc. April 23, 1970 [Nov. 24, 1969], No. 29952/71. Divided out of 1, 261, 855. Heading A4C. The description and claims relate to the rotary cutting discs disclosed in the description of the food cutting machine claimed in Specification 1, 261, 855, each disc comprising a generally flat circular disc having a first set of cutting elements on one face and a second set of cutting elements on the other face, the cutting elements of the first set being of different configuration to the cutting elements of the second set.
Patent GB-393172-A (GB)
Title: Improvements in and relating to the manufacture of synthetic rubber
IPC: C08J5/02
Filed: 1932-10-26
Abstract: Dispersions made by emulsifying halogen-2-butadienes-1, 3 and polymerizing in dispersion as described in the parent Specification may be prepared in 50 per cent acetic acid or in glycerol.  The dispersions may also contain dichloro-2.3 butadiene-1,3, e.g. in amount from 0,2 to 5 per cent, salts of glyptal resins, antioxidants, compounding ingredients or natural or vulcanized rubber latex or other synthetic rubber latices and stabilizers, polymerization inhibitors, pigments, protective colloids, proteins, and resins as in the parent Specification.ALSO:Articles are made by forming a predertermined shape of a dispersion of a halogen-2-butadiene-1, 3, polymer and simultaneously or subsequently coagulating without necessarily including sulphur or sulphur compounds and subsequent vulcanization.  The preparation of such dispersions by emulsifying halogen-2-butadienes-1, 3 and polymerizing in dispersion is described in the parent Specification.  The dispersions may also contain dichloro- 2, 3, butadiene- 1, 3, e.g. in amount from 0.2 to 5 per cent, salts of glyptal resins, antioxidants, compounding ingredients or natural or vulcanized rubber latex or other synthetic rubber latices and stabilizers, polymerization inhibitors, pigments, protective colloids, proteins and resins as in the parent Specification.  The dispersion may be alkaline or acid or in 50 per cent acetic acid or in glycerol. The methods described include those of extrusion, dipping and electrodeposition.  In an example for electrodeposition, a dispersion in 400 gms. of water of 400 gms. chloro-2-butadiene-1, 3, and 8 gms. sodium oleate, 16 gms. ammonium hydroxide, and 4 gms. phenyl b -naphthylamine is treated with 2.5 gms. ammonium chloride and 2 gms. sodium hydroxide in a volume of water equal to the volume of latex.  It is then electrolyzed with a small zinc plate as cathode and a zinc anode of the size and shape of the article required.  The current density is 1 milliamp. per sq. cm. Thirteen examples are given of the production of filaments, ribbons, strands, sheets and tubing, which may contain embedded wires or threads or fabric or be wrapped with threads or fine fibres.  In dipping, the mould may be glazed or have a fusible surface and the dispersion medium may be removed by evaporation and/or suction. Although the material is polymerized it remains for a time after precipitation in a plastic and cohesive form. The material has no tarnishing action on metals, is highly resistant to swelling by substances such as gasoline and is resistant to ozone.  Threads prepared according to the invention are stronger than those prepared from natural latex or those prepared from the polymer by other methods.
Patent GB-536105-A (GB)
Title: Improvements in or relating to radiant heating elements particularly adapted for installation in furnaces
IPC: F23C3/00
Filed: 1939-11-13
Abstract: 536,105. Radiant heating elements for furnaces. ENGINEERING & METALS CO., Ltd. Nov. 13, 1939, No. 30005. Convention date, Nov. 15, 1938. [Classes 51 (i) and 51 (ii)] A heat radiating combustion tube comprises an enlarged body portion 20, Fig. 3, a reduced neck portion 21 extending from one end, a baffle 25 in the body portion dividing it into flow and return passages 27, 28 and inlet pipes for fuel and air 38, 29 extending through the neck portion towards the passage 27, the combustion products being led through the neck portion around the air supply pipe on their way to the outlet 42 for pre-heating the fuel and air. The body 20 is of flat oval shape in section and is provided with internal lugs 24 for supporting the baffle 25 which is inserted in the body after removing an end cover 20<SP>1</SP>. When applied to a tunnel furnace having a roller conveyer 16, as shown in Fig. 1, the heat radiating tubes 20 are arranged in staggered relation :above and below the conveyer with their ends supported in the opposite walls of the furnace. The injection of the gases into the passage 27 causes part of the combustion products to recirculate as indicated in Fig. 3.
Patent GB-298959-A (GB)
Title: Improvements in or relating to thermionic valve transmitters for use in radio and other high frequency systems
IPC: H04L27/04
Filed: 1928-10-17
Abstract: 298,959. Telefunken Ges. f³r Drahtlose Telegraphie. Oct.] 17, 1927, [Convention date]. Thermionic generators ; keying systems.- Valve transmitters, particularly of the selfexcited type, have a load-compensating valve arranged to maintain a constant load on the HT supply during keying, and the resistance of the compensating valve is varied proportionally to the direct current flowing in the grid circuit of the main valve. The transmitting valve S may have its oscillatory circuit connected at three points to the valve electrodes, and a resistance Rg is connected in the grid circuit. The grid end of this resistance is connected to the grid of the compensating-valve B, the plate of which is energized through a resistance R from the HT source H1, H2, which also supplies the 'plate circuit of the main valve S. When the main valve is caused to oscillate by closing the key T, direct current flows in its grid circuit and applies a negative bias to the grid of the compensating valve B thus increasing the resistance of this valve. When the key T is opened, the oscillations cease in the valve S and the resistance of the valve B falls. Thus the load on the source H1, H2 is maintained constant. A condenser K bypasses oscillatory current round the resistance Rg.
Patent GB-712088-A (GB)
Title: Improvements in or relating to double-row roller bearings
IPC: F16C19/38
Filed: 1952-11-27
Abstract: 712,088. Roller bearings. WALLGREN, A. G. F. Nov. 27, 1952 [Nov. 28, 1951], No. 30060/52. Class 12(1) In a double-row roller bearing of the kind in which the rollers are axially fixed in both directions by means of surfaces on the bearing races 11, 12 and the rollers in each row are spaced apart by means of a retainer comprising spacing members 26 united by an annular member 24, a holder ring 32 is rigidly secured to the race 11 and has an approximately part-spherical surface 34 co-operating with corresponding surfaces on the retainer member 24 so as to prevent the retainer member from becoming wedged when tilted. The holder ring 32 is made of steel and the retainer ring 24, or its surface, consists of brass or synthetic resin. Circumferentially-spaced lubricating grooves 36 are disposed in the sliding surface of the ring 24. The spacing members 26 conform to the shapes of the spaces between the rollers. The rollers 14 are conical and bear against a central flange 18 on the outer race 12. The invention is also applicable to a doublerow roller bearing having spherical races, in which case a loose guide flange may be disposed between the rows of rollers adjacent the outer spherical race.
Patent GB-1384999-A (GB)
Title: Disc brake
IPC: F16D65/095
Filed: 1973-06-25
Abstract: 1384999 Disc brakes SOC ANON DBA 25 June 1973 [12 July 1972] 30078/73 Heading F2E A disc brake comprises a U-shaped fixed support 10 and two pads 20 supported by an axial pin 22 attached to the support wherein two radial abutting surfaces 28, 30 are provided on each arm of the support to permit each pad to anchor by one of its radial edges on one or other of the abutting surfaces according to the direction of disc rotation. As shown, the surfaces 28 are formed by projections defined by axially extending bent portions and surfaces 30 are formed by axially extending surfaces the latter being engaged by pad bearing surfaces 26 and the former by pad bearing surfaces 24 according to the disc rotational direction. The pads have apertures through which the pin 22 passes allowing play therebetween. A noise reducing spring 32, Fig. 1 (not shown), is located between the pad and a caliper, slidable on a column (16) to bias the caliper radially outwardly.
Patent GB-1037384-A (GB)
Title: Improvements in or relating to filters for the separation of solids and/or semi-solids from fluids
Inventor: MOLYNEUX FREDERICK
IPC: B01D29/82
Filed: 1963-07-30
Abstract: 1,037,384. Separating solids from fluids. MOLBROS Ltd. July 22,1964 [July 30,1963], No. 30082/63. Headings B1D and B1T. Fluid containing solids is introduced through inlet 27 and a sleeve valve 25, 26 to a passageway 20 passing through a vertical stack of discs, the filtrate percolating through interstices formed in the plates to a space 18 within a casing 10 to be withdrawn through outlet 19 and a screw worm 21 compressing and discharging the solids through a plate valve 29-32. The discs are maintained in a state of compression by springs 15 acting on a pressure plate 14 and a bellows 28 allowing for variation of degree of compression. The discs are of polythene or similar plastics material, and the screw worm and other parts of the apparatus are coated with nylon or other plastics material. The worm is spaced from the bore 20 to allow a build up of filter cake. A spring loaded four bladed knife 32 rotates with the worm and cuts off into pellet form the extrusions forced out of holes in the extrusion plate 29 by the worm. The blades of the knife are arranged to close outlets 30 while inlets 25 register with inlet 27. To clean the filter discs the direction of flow is reversed with worm stationary, inlet ports 25 closed and outlet 30 open.
Patent GB-429472-A (GB)
Title: Improvements in or relating to scales, shells, or haft components for knives, forks and tools of all kinds
IPC: B26B1/10
Filed: 1934-10-20
Abstract: 429,472. Knife and tool handles. HENDRICHS, F., 65, Eichenstrasse, Solingen, Germany. Oct. 20, 1934, No. 30087. Convention date, June 11. Drawings to Specification. [Class 30] [See also Group XXIII] Scales or haft components for knives, forks, and tools are made by hot-pressing into shallow trough-like form thin sheets of wood or other suitable fibrous material which preferably have first been impregnated with a solution of artificial resin or horn, or other material commonly used for the impregnation of wood.
Patent GB-346320-A (GB)
Title: Improvements in and relating to brake switches for centrifugal motors for spinning or the like
IPC: H01H19/11
Filed: 1929-10-04
Abstract: 346,320. Controllers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 4, 1929, No. 30163. Convention date, Oct. 4, 1928. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 38 (iii).] Combined with fusible cut-outs.-A rotary switch for controlling centrifugal motors for spinning has four positions, an " off " and a " running " position in which the controller handle will remain by itself, and a " starting " and a " braking " position from which the handle is spring biased to the " off " position. The connections in the " starting " position are the same as for " running " except that the fuses are not connected in circuit. In the " braking " position, two of the phases are crossed.
Patent GB-304414-A (GB)
Title: Improvements in or relating to sheet feeding and rewinding mechanism for music sheets
IPC: G11B31/02
Filed: 1927-11-11
Abstract: 304,414. Wade, H., (Mills Novelty Co.). Nov. 11, 1927. Winding-mechanism.-In electrically operated instruments, such as that described in Specification 142,950, a brake is applied to the take-up roller for applying tension to the music sheet during the rewinding operation and automatically released during the winding or playing operation. The brake-shoe 10 is pivotallv mounted at 11<b> upon a crank-lever R pivoted at 12; the short arm 15<a> of this lever is connected by a link 15 to an arm I<3> of the contact-carrying frame, and another arm 11<c> is controlled by a spring 13. The electric motor F is reversed at the end of the playing operation by a special perforation in the tune-sheet ; a specially-shaped dog 7 is then tripped by a finger L releasing a latch K and connecting the rewinding-gear H to the motor. The arm I<3> is at the same time drawn down by a spring M and the contact-fingers are withdrawn from the music-sheet. Specification 296,592 also is referred to.
Patent GB-999753-A (GB)
Title: Improvements in or relating to welding
Inventor: CULVER LEONARD JAMES
IPC: B23K33/00
Filed: 1960-09-02
Abstract: 999,753. Welding by fusion. FOSTER WHEELER Ltd. Aug. 22, 1961 [Sept. 2, 1960], No. 30396/60. Heading B3R. In a welded butt joint between tubes of the same internal diameter or between a tube and a header having a bore of the same diameter as the bore of the tube, the end of one tube A or the header is machined to form a spigot C and the end E of the other tube B is reduced in thickness to fit within the spigot C. A dished groove G surrounds the spigot C. The root weld fuses the spigot C completely and penetrates to the interior of the point which is completed by a fillet weld deposited in the groove G.
Patent GB-872042-A (GB)
Title: Temperature responsive apparatus
IPC: G01K7/34
Filed: 1957-09-27
Abstract: 872,042. Fire and temperature-alarm systems. SPERRY RAND CORPORATION. Sept. 27, 1957 [Oct. 1, 1956 (3)], No. 30437/57. Class 118. [Also in Group XXXVI] Fig. 13 illustrates a fire detecting circuit adapted to give separate indications in response to overheat and fire temperatures. The circuit which includes a fire detector cable (see Group XXXVI), the equivalent circuit of which is shown at 100, constitutes an overheat circuit, a fire circuit and a testing circuit. The overheat circuit comprises pairs of opposed windings 123, 134 and 124, 133 of magnetic aimplifier A. B. Windings 123, 124 and 133, 134 which are all identical are fed with rectified current from identical auto-transformers 116, 127 which also supply loads constituted by the capacitive reactance of fire cable 100 and capacitor 141 respectively. Capacitor 141 is adjusted so that under ambient temperature conditions the rectified currents are equal. Under these conditions the power windings 152, 155 of the amplifiers are unsaturated. When the Curie temperature of the cable material is approached the sharp rise in capacitance so increases the load on auto-transformer 116 that the appropriately wound power windings saturate. The increased current through these windings operates relay 159 to close the aural and visual warning circuit 160-162. In the fire circuit the marked fall of resistance of the cable occurring at a temperature above the Curie point is utilized. The circuit similarly comprises windings 165, 166 of magnetic amplifiers C, D in series with the cable, and windings 169, 170 in series with a balancing resistor 171. Until the resistance 102 of the cable falls below a preset level the power windings 183, 186 of amplifiers C, D remain unsaturated. When the fire temperature is reached relay 190 operates to close the aural and visual warning circuit 191-193. In the testing operation the capacitor 146 and resistor 147, the values of which are such that when in shunt with the cable they operate the relays, are switched into circuit. The ratio of the dielectric constant of the cable at the Curie temperature to that at appreciably lower temperatures is so great that the relay operating temperature is virtually independent of the amount of the cable which is exposed to the temperature condition.
Patent GB-922229-A (GB)
Title: Improvements in or relating to radio beacons
IPC: G01S1/68
Filed: 1959-09-07
Abstract: 922,229. Converting. R. R. JOHNSON. Sept. 7, 1959 [Sept. 11, 1958], No. 30461/59. Class 38 (2). [Also in Group XL (c)] In a radio beacon (see Group XL (c)) a combined power supply and modulator unit 3 may be supplied via a sequence switching device 4 from a battery 1 or direct from the battery, according to the position of switch 2. When the battery is connected, a transient voltage is induced in winding 28 of saturable transformer 21 of such phase as to drive transistor 24 to a fully conductive state to energize winding 30 and bias transistors 22, 23 to the non-conducting state. After a time determined by the transformer characteristics, the transient potential falls and the transistor 24 is cut off, the transistors 22, 23 conducting and thus energizing the other primary winding 40. The voltage in winding 28 falls again after a predetermined time and the process is repeated. The switching frequency may be between 2 and 5 kc./s. A winding 32 via diode 33 supplies a harmonic crystal controlled transistor oscillator 5 and supplies grid bias to a valve 50 in output circuit 6 whose filament is supplied by winding 56. The anode of the valve 50 is supplied by winding 58 via diode 59 and this voltage is only partially smoothed to provide audio-frequency modulation of the output signal.
Patent GB-300392-A (GB)
Title: Improvements in or relating to vices and cramps
IPC: B25B1/10
Filed: 1927-11-14
Abstract: 300,392. Hampton, Ltd., C. & J., and Hampton, C. W. Nov. 14, 1927. Vices; cramps. - The fixed jaw 14 of a woodworker's vice, formed with a clamping base 16 and bracket 17 secured by a screw 18, is combined with a clamping jaw 22 angularly and adjustably secured to an arm pivoted in a recess in the base 16 while the cooperating jaw 23 is moved by slides 15 secured to the moving jaw 11 of the vice. The clamping jaw 22 can be pivoted and set at any angle to the bar. The clamping jaws may be made with flanged internal and external angles respectively to grip the corner of a rectangular frame. Holes may be provided in the front of the bracket further to secure the vice by wood screws. Specification 300,494 is referred to.