baber/WOPTO huggingface dataset:
Patent GB-179670-A (GB)
Title: Improvements in and relating to the reduction of interference in wireless telegraphy and telephony
IPC: H04B1/04
Filed: 1921-02-12
Abstract: 179,670. Preston, L. G., Airey, H. Morris-, and Shearing, G. Feb. 12, 1921. Thermionic oscillation generators; harmonics,. absorbing.-The even harmonies in a thermionic generator system are diminished by the use of one or more pairs of valves connected in series and arranged so that the high frequency pulse through one valve of a pair has a phase difference of 180‹ from that through the other, there being only one point of connection for the supply of the pulses to the aerial oscillatory circuit. In an example, Fig. 2, the secondary B of a low-frequency transformer is earthed at its mid point and supplies through rectifiers V, W the anode circuits of the valves C, D which are arranged so that the high-frequency pulses through them are 180‹ out of phase with each other. A single tapping point P supplies the oscillations to the oscillatory circuit T. In a modification, one end of the secondary B is earthed and connected between the condensers X, Y, both rectifying valves being connected to the other end. In a further modification, the rectifying valves and smoothing condensers X,Y, are omitted. In another example, Fig. 4, three pairs of valves C<1> P<1>, C<2> P<2>, C' P<3>, are supplied from the transformer Z. In this case a common grid coupling coil may be used for the valves C<1>, C<2>, C<3>, and separate coils for the other valves.
Patent GB-452040-A (GB)
Title: Improvements relating to refuse bins, soiled linen containers and the like
IPC: B65F1/14
Filed: 1935-02-16
Abstract: 452,040. Receiving - devices. CO MPACTOM, Ltd., and PINTO, E. H., Hatton Street, St. John's Wood, London. Feb. 16, 1935, No. 5037. [Class 18] [See also Group I] A bin 9 is mounted on a door 4 swingable in a frame 2 about a vertical axis 3, the frame having stop faces cooperating with faces on the door, the arrangement being such that the door can be swung in either direction to alternative closed positions. To this end the stop faces on the frame comprise hinged fillets 5 which can be swung to or from door-engaging position. In another form, Fig. 5, the pivot is arranged as shown and one end of the door and one frame-member are rabbeted as at 11 and 12, the other frame member having a fillet 14, bolts 15, 16 being provided. The bin is D-shaped and is hung on a lug on the door.
Patent GB-1023261-A (GB)
Title: Pulse indicator for a milking machine
IPC: A01J5/10
Filed: 1963-02-07
Abstract: 1,023,261. Milking machines; pulse indicators. V. M. MAIN. May 5, 1964 [Feb. 7, 1963], No. 5047/63. Heading A1M. Apparatus for indicating pressure variations in a milking machine comprises a casing 8 within which is located a member 10 adapted to expand or contract under the influence of pressure variation from the pulsator of the machine. As shown the member 10 comprises a sealed balloon in a transparent casing 8 which is connected in the main pulse line 6 from a pulsator, the connections 11, 12 to the line 6 being prevented from being blocked by means of baffles 9. In a modification the member 10 comprises a bellows provided with a connection to the pulse line.
Patent GB-237827-A (GB)
Title: Improvements in and relating to flow meters and the like
IPC: G01F5/00
Filed: 1925-02-24
Abstract: 237,827. Bonn, C. R. H. Feb. 24, 1925. Venturi and Pitot-tube apparatus.-Apparatus of known type for measuring the flow of fluids through a main comprises a by-pass a, Fig. 4, fitted with a meter b of any known type and connected to Pitot tubes projecting into the main. or to the throat and normal portion of a Venturi tube forming part of the main. When the fluid flows in the opposite direction in the main, a valve d and the meter b may be reversed bv connections f with a vane e, or the throat c<1>, Fig. 10, may be moved longitudinally by the fluid pressure. The by-pass may be connected to the main through chambers h with or without perforations, or passages j, and knife edges i may be provided. The by-pass is provided with a filter l, Fig. 7, an arrangement o of ball valves for the escape of air, charging valves v, and a fixed or adjustable throttle m. If desired, the throttle m may be automatically adjusted by variations in the temperature or specific gravity of the fluid.
Patent GB-1013568-A (GB)
Title: Improvements relating to track circuits for railway signalling
Inventor: OGILVY HARRY HEGGIE
IPC: B61L1/18
Filed: 1963-02-07
Abstract: 1,013,568. Track circuits. BRITISH RAILWAYS BOARD. May 7, 1964 [Feb. 7, 1963], No. 5079/63. Heading B7N. In a continuous rail track circuit which is formed into a closed circuit by connections joining the rails at the ends A, B of the circuit, pulse generators are provided at each end of the circuit each of which delivers a current pulse to the track rails a predetermined time after receiving a pulse from the other generator and means are provided for indicating cessation of pulse generation. Each generator includes a coil 2 coupled to the rails which passes a pulse generated at the other end of the section to a delay device 6 which at termination of the delay energizes a pulse generator unit 4. The generated pulse is applied to a limiter 5 which supplies a signal to inhibit delay device 6 during pulse transmission and transmits the pulse to the rails via coil 3. A selective device 7 tuned 1 to the pulse recurrence frequency, i.e. T1+T2 T1+T2 where T1 and T2 are the delay times of the two delay services 6, respectively, provides an indication when pulse transmission ceases on entry of a train into the circuit. A further pulse generator 11, operating at a lower pulse recurrence frequency, triggers its associated pulse generator 4 to re-commence transmission when the section is free. The signals may be an audio frequency carrier signal modulated at the pulse recurrence frequency. The Specification also described how the apparatus may be time shared between adjacent sections and how aspect control may be achieved by alteration of the pulse recurrence frequencies.
Patent GB-141471-A (GB)
Title: Improvements in or relating to tobacco pouches, and cigar or cigarette cases
IPC: A24F23/04
Filed: 1919-03-03
Abstract: 141,471. Chesney, L. W. March 3,1919. Pouches.-A tobacco pouch, cigar case, or cigarette case, has attached to it a foldable device consisting of two parts c, d, the part c serving to hold a season ticket &c., which is visible through a window in the outer face of the part c. The part d has pockets e for stamps, and the part c has a pocket f for visiting-cards. In a modification, the ticket is placed in a pocket inside the receptacle and is visible through a window in the back of the receptacle.
Patent GB-970497-A (GB)
Title: Method of preparing polyurethane
IPC: C08G18/32
Filed: 1962-02-12
Abstract: A method of making a polyurethane comprises reacting an organic compound having a plurality of isothiocyanate and/or isocyanate radicals with an organic compound having a plurality of thiol and/or hydroxyl radicals in the presence of a catalyst selected from Group Ib and IIa metallic permanganates, ammonium complexes, salts of organic acids, chlorates, thiocyanates, phosphates, nitrates, perchlorates, halides, cyanides, cyanide complexes and sulphates; Group IIb and IVb metallic permanganates, thiocyanates, phosphates, halides, salts of organic acids, nitrates, sulphates and oxyhalides; Group IVa and iron series metallic nitrates, perchlorates, sulphates, salts of organic acids, stannates and thiocyanates; Groups IVb, Va and Rare Earth metallic nitrates, sulphates, oxynitrates and halide acetates; and mixtures thereof. The Periodic Table is that given on pages 58 and 59 of Lange's "Handbook of Chemistry," Sixth Edition (Handbook Publishers Inc. 1946).  Many monomers including some containing nitro groups are specified.  In a modification of the process effected in the presence of water, foamed polyurethanes are produced. Cross-linking agents e.g. glycerol, trimethylolpropane or tris(hydroxymethyl) nitromethane may be present in the reaction mixture.  Examples are given.  Specification 947,956 is referred to.
Patent GB-816447-A (GB)
Title: Improvements in or relating to roofing sheets
IPC: E04D1/26
Filed: 1957-02-15
Abstract: 816,447. Laminates. TAGPAPFABRIKEN PHONIX A.S. Feb. 15, 1957 [Feb. 20, 1956; Oct. 11, 1956], No. 5316/57. Class 140. [Also in Group X] A roofing sheet comprises a rectangular substantially rigid plate 1, preferably of fibrous material, secured along one or more lines parallel to its longitudinal sides 2, 6 to a layer 4 of roofing felt, the roofing felt being of the same length as the plate but having one or both of its longitudinal sides 7, 8 projecting beyond the longitudinal sides 2, 6 of the plate. One projecting side may be serrated as at 12, Fig. 5, to resemble roof shingles. In Fig. 5, the other longitudinal side is flush with the side of the plate, and a spacing strip of asphalt paper or asphalted roofing felt is inserted between the plate and roofing felt adjacent the projecting side (Fig. 6, not shown). In Fig. 1, the layers are secured together through a spacing strip 3 by means of staples 5; the length of the projecting part 7 preferably is equal to the difference between the distances of the strip 3 from the edges 2, 6, so that the sheets can be assembled in abutting relationship as in Fig. 2 (not shown). In a modification, Fig. 3, several overlapping pieces of roofing felt 4, 10, 11 are secured to a single plate 1 so that the roofing felt projects beyond both longitudinal sides of the plate. A modified sheet for covering a roof ridge, Fig. 4, comprises a single piece of roofing felt secured by means of two spacing strips 3 to two plates 1 which are spaced apart, the roofing felt being capable of bending along its longitudinal medial line.
Patent GB-844494-A (GB)
Title: Improvements in or relating to electric de-misters for shop windows
Inventor: SHARPLES JOHN THOMAS
IPC: E06B7/12
Filed: 1958-02-20
Abstract: 844,494. Electric de-misters. BACKER ELECTRIC CO. Ltd. Feb. 10, 1959 [Feb. 20, 1958], No. 5486/58. Class 39(3). An electric de-mister for windows comprises a tubular shield of openwork metal sheet, formed with two flanges secured between a clip running lengthwise of the shield, and a resistance element of the tubular sheathed metal type. As shown, a tubular shield 1 of expanded metal, e.g. aluminium, is closed at one end by a cap 6 and at the other end by an apertured cap 8 and has along the length of its underside two flanges 2 fitting against each other and secured inside a sheet metal clip 3. A tubular metal sheath resistance element 16 within the shield is bent downwardly towards one end, as at 17, so as to be supported locally by the bottom of the shield, and is supported at its other end 15 by the apertured inner end 14 of a socket housing 10 secured to the cap 8. The element is connected electrically to a socket 18 which is located within the housing 10 and which receives a three-pin plug connected to a supply cable 32. Spring clips 4 grip the clip 3 and support the de-mister at the base of a window 25. A deflector 27 may be provided to direct heated air forwardly and upwardly as shown by the arrows 31.
Patent GB-962528-A (GB)
Title: Production of sulphamic acid
IPC: C01B21/093
Filed: 1963-02-11
Abstract: Sulphamic acid is produced by reacting together urea, sulphuric acid and sulphur trioxide, in the presence of sulphuryl chloride as reaction medium at a temperature of 55 DEG  to 75 DEG  C., preferably 66 DEG  to 72 DEG  C.  The process may be carried out by boiling the reaction mixture under reflux.  Equivalent amounts of urea and concentrated sulphuric acid may be prereacted to form urea bisulphate, which is then added, preferably in the molten state, to a mixture of sulphuryl chloride and sulphur trioxide preferably preheated to 60 DEG  C.  The reaction temperature is preferably maintained between 68 DEG  and 70 DEG  C.  At the reaction temperature there is a continuous evolution of carbon dioxide and sulphuryl chloride vapours, which are condensed and the condensate is returned to the reactor.  Alternatively, urea, sulphur trioxide and sulphuric acid may be simultaneously brought into contact with each other in the presence of sulphuryl chloride, preferably at a temperature below 40 DEG  to 45 DEG  C., and the temperature is then raised to 55 DEG  to 75 DEG  C., preferably 68 DEG  to 70 DEG  C., or until the mixture boils under reflux.  In another method, the sulphuryl chloride, sulphur trioxide and sulphuric acid may be mixed and heated, and urea, in pellet form, is added at a temperature of 60 DEG  to 70 DEG  C.  It is preferred that substantially equimolar proportions of reactants be utilized in the reaction.  A molar ratio of sulphuryl chloride to urea, or urea bisulphate, of 2 to 1 or higher, preferably at least 3 to 1, may be used.  In Example 1, urea bisulphate is added to a refluxing mixture of sulphur trioxide and sulphuryl chloride.  The temperature rises from 60 DEG  to 68 DEG C. Refluxing and stirring at 68 DEG  to 70 DEG  C. for 45 minutes complete the reaction.
Patent GB-124078-A (GB)
Title: Improved Latch for Gates and the like.
Inventor: MAIR JOHN THOMAS
IPC: E05B17/00
Filed: 1918-04-02
Abstract: 124,078. Mair, J. T. April 2, 1918. Catches, gravity. -A pivoted gravity catch is adapted to be lifted by a pivoted gravity lever interlocking therewith. T h e catch 2 which engages a striker 4 has a recess 13 and a projection 10 engaging corresponding parts 12, 11 on a lever 3 pivoted at 7 and having a handle 18. A trigger 17 on the lever engages the striker and ensures that the catch 2 shall be lowered when the gate &c. is closed. On lifting the lever to raise the catch the trigger 17 presses against the striker with the effect of giving the gate an initial impulse so as to carry the catch clear of the striker. A spring - controlled push-button may be provided to be operated against the trigger 17 in order to raise the lever. The lever 3 may be secured by a lock bolt in the slot 26 behind the shoulder 25.
Patent GB-1130726-A (GB)
Title: An improved apparatus and method for the induction hardening of pin journals and main journals of crankshafts
IPC: C21D9/30
Filed: 1966-02-09
Abstract: 1,130,726. Heat-treating crank-shafts. INTERNATIONAL HARVESTER CO. Feb. 9, 1966 [May 6, 1965], No.5648/66. Heading C7N. Crank-shaft pin and main journals (30) are induction hardened by moving the crank-shaft 16 to an operative station B below the liquid level in a quench tank 10, e.g. bringing it step-by-step from an entry (and removal) station A along the lower run on guide rails 70 of a conveyer mechanism 15, lifting it above the liquid level, e.g. by engaging it at the free ends of arms 32 which swing about a shaft 33 by means of a power cylinder 35 pivotally connected to a support 37 and a lever 41, locating on a pin or main journal an inductor 25 suspended above the quench tank, e. g. from arms 23 pivoted on pins 22 in an assembly 18 supported on a platform 17 on the tank 10, to follow the path of the journal while the crank-shaft is rotated e.g. from a drive housing 50 with the inductor supported by the journal, returning the crank-shaft to the operative station B after induction heating of the journal and moving it e. g. held in an outward recess 81 of a pair of carriage plates 80 on the conveyer mechanism 15 to a removal station A above the liquid level in the tank while again rotating it, e. g. by an auxiliary conveyer chain 88 driving roller 92 which contact the crank-shaft. The inductor housing 18 is movable on the platform 17 along the axis of the crank-shaft to align it with each of the journals.
Patent GB-112710-A (GB)
Title: Improvements in or connected with Hand Operated Rotary Rod or Shaft Motion Transmission Control Systems, for Actuating Instruments or Mechanisms at one Station or Place at a Distance from the Station or Place of the Hand Actuated Mechanism or Instrument.
Inventor: CHADBURN WILLIAM
IPC: B63H21/22
Filed: 1917-04-24
Abstract: 112,710. Chadburn, W., and Chadburn, W. R. April 24, 1917. Mechanical telegraphs.-Rotary shafting and gearing for mechanical telegraphs is constructed so that it may be erected in position without previous essay for the determining of exact lengths, angles, &c. Self-contained units comprising boxes 14, bevel wheels, and stump shafts 20 are attachable to suitable supports, such as the .bulk-heads of a ship, and the shafting 2 may be connected to the stump shafts 20 by longitudinally movable sleeve couplings 22. A universal joint 24 may be provided, and also disconnecting clutches, intermediate expansion couplings, and intermediate bearings, which may be water-tight, for the shafting 2. Reference is made to Specifications 21975/05, 12407/07 and 3140/14.
Patent GB-712988-A (GB)
Title: Goniometer
IPC: G01C1/00
Filed: 1951-03-09
Abstract: 712,988. Measuring angles. KERN & CO. AKT.- GES. March 9, 1951 [March 9, 1950], No. 5818/51. Drawings to Specification. Class 97(2) In a goniometer having a reading microscope system the periodical error in circle graduations originating from the dividing engine used for producing the said graduations is reduced by providing at least two concentric circles of graduation marks on the graduation carrier, the periodical error graphs of the said circles being approximately similar in form and the said circles being so angularly displaced relatively to each other that the arithmetic mean of the periodic errors of corresponding readings on all the circles is a minimum. All the circles of graduation marks may have the same diameter and be so disposed that the graduation marks of the circles follow each other cyclically in the circle graduation system. Alternatively the circles may have different diameters, the microscope system then being such as to bring the circles one above the other in the field of vision. In the case described of three circles only every third graduation is marked on each circle.
Patent GB-916970-A (GB)
Title: Improvements in and relating to a winding frame
IPC: B65H67/06
Filed: 1959-02-20
Abstract: 916,970. Discharge of textile cops from hoppers. REINERS, W. Feb. 20, 1959 [Feb. 22, 1958], No. 5902/59. Class 78 (1). [Also in Group IX] Spinning cops are fed one-by-one from a hopper 1 by means of a pneumatic piston 4 and escapement 18, 19. The piston advances to isolate a cop 2a whilst, by engagement at 16, 17, operating the escapement to release the leftmost cop to roll down shoot 20 to be transported by skewer 21 to a winding frame. The return of the piston lowers the isolated cop 2a and operates to re-set the escapement (by engagement at 16, 17), so that the next-leftmost cop and the isolated cop both roll to the left to be held by the stop 18 of the escapement, whilst another cop rolls from the container on to the top of the piston. The piston is operated via cam 12 by shaft 13, and shaft 13 is operated by the winding frame whenever a new cop is required. In the embodiment shown on the right-hand side of Fig. 1, the hopper is formed of a fixed part 27 and a movable part 25, the latter being transportable for replenishment of cops and being opened by door 24.
Patent GB-1385065-A (GB)
Title: Power switching cirucits
IPC: H03K17/13
Filed: 1972-02-09
Abstract: 1385065 Installation systems comprising semi-conductor switching elements C L DAY 9 Feb 1972 5942/72 Heading H2H A power switching circuit comprises a solidstate, bidirectional conducting device for controlling the current flow in two directions through a load, a phase-shifting device comprising a variable resistor and a capacitor in series and together in parallel with the bidirectional conducting device so as to control conduction thereof and a diode means connected in so parallel with the bidirectional conducting device as to dissipate high value transient voltages. Fig. 4 shows the circuit in which an A.C. input is applied via coil 813, fuse 808, ammeter 806 to the output load, returning via terminals 820, 819 on triac 827, fuse 810, coil 814 to the other input terminal. Firing of the triac is controlled by charging capacitor 823 via variable resistor 804, the firing control potential being applied via diode 817 to terminal 827a of the triac thereby to break down a diac in the triac gate circuit. Thyractor 818 connected across the triac protects the latter from high transient voltages. Switch 803 shorts variable resistor 804 to permit rapid charging of capacitor 823 and thus conduction by triac 827 for the whole of the cycle to provide maximum current. Indicator lights 807, 809, 805 are used to indicate the state of the fuses, and the degree of conduction by triac 827. Diodes 815, 816 are used to prevent "snap-on" effect. The triac 827, capacitor 823, diodes 815, 816, 817, resistor 822 and thyractor 818 may be housed in a separate plug ended module to facilitate servicing Fig. 1 (not shown) shows an assembly of eight such circuits for separately controlling the heating of eight injection moulding machines, and Fig. 10 (not shown) shows the replaceable module.
Patent GB-746310-A (GB)
Title: Hog side skinning machine
Inventor: BURCH PAUL FREDERICK
Filed: 1954-03-01
Abstract: 746,310. Pigs, skinning. WOLVERINE SHOE & TANNING CORPORATION. March 1, 1954, No. 5943/54. Class 28(2). The sides of pigs are skinned as they are drawn by engaging pins 31 over a drum 4 rotated'against a skinning knife 21. Each side, skin down, is placed on a table 40, 41 which is tilted automatically to slide the side into contact with the pins 31 to dotted line position 51 as the pins 31 in a drum notch 29 rotate into skin penetrating position, such tilting being done by push springs 45 which rock the table 40 &c. about pivots 43 when the flat part 50 of a rotated cam 49 permits the cam roller 48 to yield to the right. The knife 22 is then allowed to be lowered into contact with the skin by cams 52 operating on a roller 28 on the pivoted knife end supports 20, this being done in timed relation with the position of the drum 4 by a press down spring 27. The flesh is pressed down on the drum 4 by rolls 16 yieldingly mounted on leaf springs 13 limited in movement between screw stops. After skinning, the cam 49 restores the table 40, 41 to receiving position.
Patent GB-268313-A (GB)
Title: Self-sealing door for coke ovens
IPC: C10B25/16
Filed: 1927-03-03
Abstract: 268,313. Schwarz, H. March 26, 1926, [Convention date]. Coke-oven doors.-In a self sealing coke-oven door, the escape of gases is prevented by providing separate closed hollow spaces 8, 9 between the door 3 and its frame 1. The spaces 8 are formed by ribs 6 on the door which engage with recesses 5 in the frame and the space 9 by an annular hollow chamber. The gases which escape past the adjacent surfaces 7 expand in the space 9 and their outflow is restricted by passage through the recesses 5.
Patent GB-1026131-A (GB)
Title: Improvements in or relating to the production of aluminium fluoride
Inventor: PEGLER JOHN LIONEL
IPC: C01F7/50
Filed: 1962-02-16
Abstract: Aluminium fluoride of high purity is prepared by treating hydrated alumina with anhydrous hydrogen fluoride at a temperature below 550 DEG  C., and the product with a further excess of anhydrous hydrogen fluoride at a temperature above 650 DEG  C. and preferably below 750 DEG  C.