baber/WOPTO huggingface dataset:
Patent GB-493542-A (GB)
Title: Improvements in automatic regulation in radio receivers
IPC: H03H7/01
Filed: 1937-01-05
Abstract: 493,542. Valve circuits for wireless reception. JOHNSON LABORATORIES, Inc. Jan. 5, 1937, No. 329. Convention date, July 22, 1936. [Class 40 (v)] The threshold value of signal necessary for removing the muting of a receiver is reduced by the presence of a signal of above said threshold value. A receiver comprising automatic tuning means is described incorporating such a muting system. The diode signal detector comprises the grid 46 and cathode 10 of valve 15, this valve passing, in the absence of signals, a heavy anode current through resistance 12 which also supplies screen grid voltage to the I.F. amplifier 1. This valve is therefore disabled by the resulting low screen grid voltage. The triode L.F. amplifying portion of valve 17 is also disabled by a large grid bias derived from the junction of resistances 24, 25 which are connected through resistance 26 to the anode side of the resistance 12. Upon receipt of a signal of above the threshold amplitude the signal diode 46, 10 produces a voltage across its load resistances 8, 9 which reduces the anode current of valve 14 and hence the voltage drop in resistance 12 thus increasing the screen grid voltage of valve 1. This action is cumulative and reduces the threshold value of signal necessary to reinstate the muted condition. Normal operating grid bias is restored to the triode 17 when the junction of resistances 25, 26, which is connected to the diode anode 29 in valve 17, becomes positive relative to the earthed cathode 22, and is effectually earthed thereby. The time constant of the circuit for removing the muting from valve 17 is made larger than that associated with valve 1. The setting of the potentiometer 32 controls the maximum sensitivity of the receiver and the threshold of the muting system by controlling the steady component of the grid bias of the R.F. and I.F. valves. The muting system may be disabled by placing the switch 16 which may be coupled to the potentiometer 32 in its lower position to apply a suitable steady potential to the anode of valve 15 and screen grid of valve 1. A.V.C. voltages are produced by a further diode 39, 22 in valve 17 which is fed from the grid of valve 1 through an amplifier 35. Automatic tuning. An error detector 53, 55, 56a, 56b of known type is energized from the anode circuit of valve 15 and the correcting voltage produced thereby is fed to a potential divider 59a, 49b the portion 59a of which is shunted by a condenser 59. The potential develops across the resistance 59b is used to vary the input capacity of valve 57 which is associated in known manner with the local oscillator 48 for tuning correction. When the receiver is manually detuned the audio-frequency transients which are present and emphasized in the resistance 59b, help to enable the corrector to relinquish control of the oscillator more readily.
Patent GB-391541-A (GB)
Title: Improvements in or relating to the lagging of pipes and the like
IPC: F16L59/22
Filed: 1932-01-05
Abstract: 391,541. Nonconducting coverings for heat. HAMILTON, W., Woodlands, Best Beech Hill, Wadhurst, Sussex. Jan. 5, 1932, Nos. 330 and 1887. [Class 64 (ii).] A lagging for pipes comprises a number of strips 1 .. 8 of trapezoidal cross section affixed to a flexible sheet B, the angle between the non-parallel sides being such that the lagging in position around the pipe forms a solid mass. The strips may consist of powdered cork and adhesive, soft wood, pith or cork. The flexible sheet may comprise American cloth or imitation leather or a fabric such as calico. Projections and recesses in the ends of the strips enable them to key into one another. In a modification, half the strips may be used to form semicylindrical sleeves.
Patent GB-401132-A (GB)
Title: Manufacture of dyestuffs of the anthraquinone series
IPC: C09B1/34
Filed: 1933-01-05
Abstract: 1-amino-4-halogenanthraquinone-2-sulphonic acid or a salt thereof is caused to react with a meta- or para-aminoaryl-alkyl-sulphone or a substitution product thereof containing substituents in the aryl, alkyl or both these radicals.  The 4-halogen-group is replaced by the aminoaryl group of the sulphone compound.  The products dye animal fibres blue. According to examples sodium 1-amino-4-bromo-anthraquinone-2-sulphonic acid is treated with (1) m-aminophenyl methyl or ethyl sulphone or corresponding compounds containing other alkyl groups; (2) p-aminophenyl methylsulphone (obtainable by oxidizing p-nitrophenylmethylsulphide and reducing the nitro group); (3) m-aminophenylsulphone acetic acid (obtainable from phenylsulphone acetic acid by nitration and reduction) followed by esterification of the product to the ethyl, methyl or propyl esters; (4) 5-amino-2-acetyl aminophenylmethylsulphone (obtainable by nitrating and reducing 2-acetylaminophenylmethylsulphone), or the corresponding 2-chloro compound (obtainable by reducing-2-chlorophenylsulphochloride to the sulphuric acid, alkylating, nitrating and reducing the nitro group) and the corresponding 2-methyl compound (obtainable by p  reducing 2-methylphenylsulphochloride alkylating, nitrating and reducing) and other compounds having substituents in the phenyl or alkyl radical; (5) m-aminophenylhydroxyethylsulphone, or p-aminophenylhydroxyethylsulphone (obtainable by condensation with ethylene bromide and hydrolysis from p-nitrophenylsulphinic acid), and corresponding compounds containing higher hydroxyalkyl radicals; and (6) 2-aminotetrahydro-5 : 6 : 7 : 8-naphthyl - 4 - methyl-sulphone (obtainable by reducing the 2-nitro-4-sulphochloride to sulphinic acid, methylating this, and reducing the nitro group). Specifications 10378/14 and 7861/15, [both in Class 2 (iii), Dyes &c.], are referred to.
Patent GB-119772-A (GB)
Title: Improvements relating to Artificial Hands and Arms.
Inventor: ROBINSON ENOS
IPC: A61F2/58
Filed: 1918-01-08
Abstract: 119,772. Robinson, E. Jan. 8, 1918. Limbs, artificial.-The bending and straightening of the joints of a hand or arm are controlled by a single member operating through detent and rack mechanism. The rack member a is fixed to some part of the arm or body of the wearer and supports a slide f on which the detents g are pivoted. A cord m connects the slide to the joints to be controlled, the operating cord or member n being connected through links k to the pivoted detents and moving them in opposition to springs j, o. In a modification, the links k are replaced by a cam member which withdraws the detents from engagement with the racks against the action of a spring. The operating- cord may be connected to a pulley over which passes a cord connected at one end to the detents and at the other end to the slide. The operation may be effected by various parts of the body such as the opposite arm or a knee, guide-pulleys, or tension springs being provided where desired.
Patent GB-997329-A (GB)
Title: Iethod of using gel coatings for chemical processing of photographic film strips
IPC: G03C7/30
Filed: 1962-01-05
Abstract: 997, 329. Photographic colour processes; processing solutions. PANACOLOR Inc. Jan. 5, 1962 [Jan. 10, 1961], No. 543/62. Drawings to Specification. Heading G2C. The invention comprises a process of producing colour images in which a silver halide emulsion is exposed to a first colour separation negative, colour developed and bleached, and then exposed to a second colour separation negative followed by colour development to a second colour and bleaching, the colour developing and/or bleaching solutions being thixotropic so that they may be applied to the emulsion as a thin layer, allowed to gel, and then washed off after reaction. An example is given wherein a colour developing solution containing 2,4-dichioro-1-naphthol and a bleaching solution comprising potassium ferricyanide and bromide, are made thixotropic by means of corn starch.
Patent GB-691311-A (GB)
Title: Improvements in and relating to shuttering
Inventor: KENNEDY FRANK
IPC: E04G11/46
Filed: 1950-01-09
Abstract: 691,311. Shuttering for casting floors. TRUSSED CONCRETE STEEL CO., Ltd. April 9, 1951 [Jan. 9, 1950], No. 563/50. Class 20(ii) Shuttering 1, 2, Fig. 1, for floors is supported on beams of box or channel section having adjustably telescoping parts 7, 8,. Fig. 4, held in various adjusted positions by bolts passing through registering holes 9, 10, in the telescoping parts and cleats 11, 12 secure the shutters 1, 2 and are secured to the larger beam parts 7 by bolts 13. The shuttering is secured to the smaller beam parts 8 by cleats 21, 22, Fig. 5, of U-shape. The beams 7, 8 are mounted on beams 31 at right-angles by a strap 32 carrying a U-section member 35 in which the beams are secured by a wedge 36. The beams 31 are mounted in stirrups 38 on props 37.
Patent GB-950268-A (GB)
Title: Improvements in or relating to multiple cage structures for housing poultry or smallanimals
IPC: A01K31/17
Filed: 1963-01-04
Abstract: 950,268. Battery cages. A. G. L. WILSON. Jan. 4, 1963 [Jan. 4, 1962], No. 567/63. Heading AIM. A structure for housing poultry or other small animals comprises cages arranged back to back so as to leave between them a passage 13 at the bottom of which is an endless band 42 which receives droppings discharged from trays 19 located beneath the cages by means of scrapers 45. The band 42 conveys the droppings to collecting means, and passes beneath a scraper bar spring presseed against the band. The conveyer assembly may be permanently fixed to the framework of the structure or a mobile unit may be used particularly when the cage structure is suspended from the roof of a building or mounted on a wall. The trays 19 may be formed from asbestos cement, glass or steel and may be covered with readily detachable sheet material.
Patent GB-676246-A (GB)
Title: Improvements in or relating to guide means for suspending sliding doors, roofs, hatches and the like
IPC: E05D15/06
Filed: 1950-01-10
Abstract: 676,246. Sliding doors and roofs. COACH FITTINGS DEVELOPMENT, Ltd., and OVERTON, W. Feb. 13, 1951 [Jan. 10, 1950]. No. 578/50. Classes 20(iii) and 20(iv) In a sliding door &c. wherein some rollers 23 engage the upper concave portion 10 of a C-section track 13, and other rollers 15, engage the lower portion 11, the rollers 23. are spring loaded into engagement with their track by means of a spring 27 anchored at one end end to the carriage 17 and at the other to a sleeve 24 ecentric to the axis of spindle 25 and on which the wheel 23 rotates. The force of the spring thus acts on the roller with a mechanical advantage greater than 1. Specification 573,034 is referred to.
Patent GB-1455972-A (GB)
Title: Simulator trainer
IPC: G09B9/24
Filed: 1975-01-07
Abstract: 1455972 Angle sensitive switch H B SCHOW and M L ABRAMS 7 Jan 1975 613/75 Heading G1A [Also in Divisions G5 and H1] A detector for producing a signal when the component upon which it is mounted deviates beyond the pre-set limits, e.g. Œ5 degrees, of a desired angular orientation comprises a metal housing with end caps 86, 88 in which are arranged a light source 90, a photo-cell 92 and, between the two, a concave dish 93 supporting a freely movable opaque ball 94 which blocks from photo-cell 92 any light from bulb 90 only when the detector is correctly orientated.
Patent GB-1041292-A (GB)
Title: A ventilator for air or other gaseous medium
Inventor: LAERKFELDT BIRGER
IPC: F16K1/38
Filed: 1964-01-06
Abstract: 1,041,292. Valves. SVENSKA FLAKTFABRIEKEN A.B. Jan. 6, 1964 [Jan. 12, 1963], No. 622/64. Heading F2V. [Also in Division F4] A ventilating valve mounted in the wall of an exhaust duct comprises a frusto-conical sleeve 5 in line contact with a movable frustoconical valve body 6. The valve body is moved along the contact line by a chain 14 operating guide means 11 which are connected to the valve body, are slidably mounted in a slot 12 in the sleeve and are guided by a rail 13. The sleeve 5 is mounted in a frame 1 in the exhaust duct wall by spring straps pivoted to the sleeve and engaging a groove 8 in the frame. The straps force a front plate 3 of the valve against a packing 9.
Patent GB-1183342-A (GB)
Title: Improvements in Guns for Projecting Abrasive or Polishing Materials
Inventor: SHENTON KENNETH
IPC: B24C5/04
Filed: 1967-01-05
Abstract: 1,183,342. Blasting. ROTO-FINISH Ltd. 14 Feb., 1968 [5 Jan., 1967], No. 648/67. Heading B3D. A gun for projecting abrasive or polishing material in particulate form, e.g. for polishing, descaling or derusting, has a passage to which there can be supplied a stream of fluid under pressure containing the particulate material and a passage to which there can be supplied a stream of air or other gas under a higher pressure, so that the two streams will be mixed together within the gun and discharged as a single stream; one of the two passages extends forwardly to the discharge orifice of the gun in axial alignment with that orifice, while the other passage is constituted by a channel which (or by several channels each of which) is inclined forwardly and inwardly towards the first passage and at its forward end opens tangentially through the wall of the first passage thereby imparting a helical swirling movement to the combined fluid stream which flows forwardly through the forward part of the first passage and is discharged forwardly from the orifice. A gun body in two parts 1, 2, with a pistol grip 3, has a central longitudinal passage 4 having at its rear end means for connecting it to a pressurized supply of abrasive or polishing material, e.g. a mixture of water with alumina or other abrasive grit or glass beads; the passage has a removable abrasion-resistant lining 4a. An annular chamber 5 in the body part 2 concentric with the passage 4 has a connection for the supply of air or other gas under pressure and communicates with four channels 6 extending forwardly at an acute angle towards the passage 4 into which they break to the rear of a mixing chamber 11; the axes of the channels 6 are off-set from the axis of the passage 4 so that seen in end elevation the projected axes of the channels 6 are tangential to an imaginary circle having its centre on the axis of the passage 4 and of smaller diameter than the passage. The channels 6 are so shaped, e.g. by providing conical inlets 7, as to reduce the pressure of the gas and increase its velocity, so that on entry into the passage 4 its pressure is only slightly above that of the material in the passage 4, but its velocity is much greater. A discharge nozzle 8 is removably mounted on the forward end of the body by a rubber or plastic outer casing 12 and a screwed plastic or metal cap 13. The length and diameter of the mixing chamber 11 can be varied by substituting a nozzle of different dimensions. Air or other gas may be supplied to the passage 4 and the abrasive or polishing material to the channels 6.
Patent GB-1059896-A (GB)
Title: Thiazine derivative and the preparation thereof
IPC: C07D417/04
Filed: 1966-01-06
Abstract: The invention comprises 2-(3-hydroxy-5-hydroxymethyl - 2 - methyl - 4 - pyridyl) - tetra-hydro - 1,3 - thiazine - 4 - carboxylic acid, and a process for its preparation comprising reacting pyridoxal, an acid addition salt of pyridoxal or the betaine sulphonic acid of pyridoxal with homocysteine.  The homocysteine may be used as the solution prepared by dissolving an acid addition salt of homocysteine thiolactone in an alkaline solution.
Patent GB-807342-A (GB)
Title: Improvements in or relating to a method of making headed studs or bolts
Inventor: GRAHAM MATTHEW P
IPC: B21K1/44
Filed: 1956-01-09
Abstract: 807,342. Making bolts and the like. THOMPSON PRODUCTS Inc. Jan. 9, 1956, No. 714/56. Classes 83 (2) and 83 (4). A headed stud or bolt is made by shaving a length 20, Fig. 2, of solid metal rod having a diameter less than that of the desired head so as to form a shank portion free from blemishes, cutting at least the shaved portion from the length of rod to form a blank 19, and cold upsetting a'shaved end of the blank in a die 21, Fig. 4, to form the head. The term shaving is defined as turning without any traversing movement of the tool. A ball head stud, Fig. 3 (not shown), is formed from bar stock 18, Fig. 1 (not shown), which is, inserted in a screw machine and-therein formed with a reduced diameter screw-thread 11, Fig. 2, and a tapered portion 12. The cylindrical portion 20 is then shaved. The machined blank 19 is then cut off from the remainder of the rod. The blank is then inserted in a die 21, Fig. 4, having a bell-mouth 26 and its head is cold upset by a heading die 22 having a part spherical cavity 25, to form a part-spherical head 16, Fig. 3 (not shown) on the blank. Simultaneously the bellmouth 26 forms a smooth ball-bearing race under the head without necessity of subsequent grinding.
Patent GB-637378-A (GB)
Title: Improvements in apparatus for moistening the flaps of envelopes
IPC: B43M5/02
Filed: 1947-02-08
Abstract: <PICT:0637378/III/1> <PICT:0637378/III/2> Apparatus for moistening the flaps of envelopes in which water is supplied to an absorbent pad housed in a recess in the base of the device from a horizontal reservoir mounted thereon, the flap being pressed into contact with the pad by a spring strip, is characterized by a spring-loaded valve seated on the outer periphery of the reservoir, pressure on the upper end of the valve moving it off its seat to allow water to drip on to the pad from the reservoir.  The reservoir B containing the spring-loaded valve C is fixed to the base A at one end and projects over the absorbent pad a1 which rests on circular recesses a.  The flap of the envelope is drawn over the moistened pad a1, the spring strip b maintaining contact between the two.  Specification 436,113 is referred to.
Patent GB-1466652-A (GB)
Title: Mouth implant a method of inserting the implant in the mouth and a tool for machining the dental arch of the jaw bone for reception of the implant
IPC: A61B17/16
Filed: 1975-01-08
Abstract: 1466652 Dental implants and tools I HERSKOVITS and R HERSKOVITS 8 Jan 1975 [9 May 1974] 742/75 Heading A5R An endoosseous implant comprises a base 1", 1"' from which extend two upstanding, spaced side plates 1, 1', said plates being shaped so as to be capable of being received in two slots formed in a dental arch portion of the jaw bone by means of rotary disc cutters, and being such as to become anchored in the jaw bone upon healing of the bone, said base being adapted to receive one or more stumps 5, 6 which can serve as artificial teeth or mountings for artificial teeth. The stumps may be screw-threaded on portions of reduced diameter 5', 6' for reception in screwthreaded holes 2, 3. The shape of the side plates is preferably semi-circular with holes 4 through which bone tissue may grow. A suitable material for making the implant is spectrographically pure tantalum. The side plates may be made a thickness of 0.4 mm and the base plates a thickness of 0.8 mm. Suitable rotary disc cutters are illustrated in Figs. 1, 2, 9 and 10, (not shown).
Patent GB-509252-A (GB)
Title: Improvements in or relating to fluid fuel burners
IPC: F23C7/00
Filed: 1938-01-10
Abstract: 509,252. Liquid, gaseous, and pulverulent-fuel furnaces; spray burners. BABCOCK & WILCOX, Ltd. Jan. 10, 1938, No. 760. Convention date, June 23, 1937. [Class 51 (i)] [Also in Group XI] Liquid, gaseous or pulverulent fuel is supplied to a stream of combustion supporting air from a burner nozzle such as 40 which delivers a diverging stream of fuel into the air stream part of which passes through an impeller plate 28 and a part around the periphery of the impeller plate, the air supply being controlled by louvres 53 pivotally mounted on axes obliquely inclined to the burner axis. The outer edges of the louvres are pivotally mounted on a ring 50 and the inner edges are provided with pinions 56 which have pivot-pins supported in a pinion 55 engaging with a gear-ring 60 mounted on a rotatable sleeve 61 actuated by an arm 65 mounted on the front plate 25. The sleeve 61 also carries an adjustable cone 70 so that air entering freely into the space between the plate 25 and the louvres is directed away from the burner axis. The furnace port 10 is provided with a conical ring 20 having inclined vanes' 80 and a conical surface at 75. The burner 35 is provided with a nozzle body 37, Fig. 3, having diverging passages 38 leading to a circular groove 39 communicating with slots in the inner face of a sprayer plate 41 and arranged tangentially with respect to a whirl chamber 42 which delivers through an orifice 43. The sprayer plate is dished on its outer face and is secured to the nozzle body 37 by a cap 40. Specifications 120,489, [Class 51 (i)], and 509,251 are referred to.
Patent GB-248879-A (GB)
Title: Improvements in and connected with steam generators
IPC: F22B17/10
Filed: 1925-01-10
Abstract: 248,879. Babcock & Wilcox, Ltd., and Spyer, A. Jan. 10, 1925. Flue-dust, collecting; baffles.-In a water-tube boiler of the kind in which the tubes are arranged in two spaced superposed stacks, the upper header c of the upper stack of tubes is connected with the lower header d<1> of the lower stack by a row or rows of tubes G having a baffle I supported thereon to form a dust pocket, the baffle being arranged at an inclination greater than the angle of repose of the dust.
Patent GB-1376221-A (GB)
Title: Electric motor
IPC: H02K1/28
Filed: 1972-01-07
Abstract: 1376221 Dynamo-electric machines PAPSTMOTOREN KG 7 Jan 1972 [8 Jan 1971] 870/72 Addition to 1310982 Heading H2A The rotor of an external rotor electric motor is mounted on a shaft 25 by a disc-shaped metal plate 42 partly embedded in a cast metal part 45 of the rotor. The motor disclosed is a squirrel cage induction fan motor and the cast metal part 45 is one of the end rings of the aluminium squirrel cage. The metal plate 42 is secured to a bushing 41 on the shaft by a pressing operation, by welding or by soldering. The stator carries journal and thrust bearings for the shaft.
Patent GB-867658-A (GB)
Title: Improvements relating to machines for mining coal and other minerals
Inventor: JERRIT GEORGE
IPC: E21C25/24
Filed: 1959-01-10
Abstract: 867,658. Mineral-mining machines. MAVOR & COULSON Ltd. Jan. 11, 1960 [Jan. 10, 1959], No. 980/59. Class 68(1). One or more axially aligned cutter discs 28 are secured to and driven by the idler sprocket at the outer end of a forwardly inclined cutter jib 24 extending transversely from the body 20 of the mineral-cutting machine at a height just above the face conveyer 40 along which the machine is drawn. The direction of drive of the jib cutter chain is such that the cutting front of the picks of the chain and discs all work towards the body of the machine. Behind the jib is positioned a second jib about which circulates a flighted loader chain and beneath which is underslung an auxiliary jib having a cutter chain for cutting out the mineral left at floor level by the leading cutter chain. At the rear of the machine is a scraper plate.
Patent HK-14596-A (HK)
Title: Method for transmitting a signal
Inventor: SCHOLZ WERNER DIPL-ING
IPC: G11B5/588
Filed: 1996-01-25
Abstract: Whenever a low-frequency pilot signal is transmitted in alternation with the useful signal, difficulties arise in erasure. These difficulties are avoided by the pilot signal in each case being repeatedly switched over briefly during a half-wave to another amplitude value (chopped). Particularly suitable for recording a pilot signal for automatic track following (ATF) in digital sound recording (R-DAT).
Patent HK-15791-A (HK)
Title: Storage medium track pitch detector
Inventor: EBERLY CARLYLE J
IPC: G01B11/14
Filed: 1991-03-07
Abstract: Method and apparatus for measuring the spacing between adjacent information tracks on a recording medium. A spot of light is projected onto at least a portion of a first track and maintained in a constant spacing from a second track. A photodetector detects the amount of light reflected off of the disc from the spot in a predetermined direction, and provides an electrical signal as an output. The photodetector output provides a measurement of the track-to-track spacing of the recording medium.