baber/WOPTO huggingface dataset:
Patent GB-1458111-A (GB)
Title: Brake
IPC: F16D49/16
Filed: 1974-03-22
Abstract: 1458111 External shoe drum brakes; brake cooling P SCHMITZ 22 March 1974 12963/74 Heading F2E A brake ring 15 secured to a wheel hub 13 is acted on externally by two brake shoes 16 each arranged at the end of a two part lever 18, 181 extending generally longitudinally with respect to the axis of ring 15. The brake shoes 16 are applied by a floating hydraulic piston-and-cylinder device 24 located beneath a fixed axle 10 and fed by a pneumatically operated cylinder (not shown) operated pneumatically. The brake ring 15 is detachably secured by screw bolts 26 to a spacer element 14 which may be integral with the hub 13. Preferably the spacer element 14 is constructed as a wheel with blades 28 so that cooling air is drawn through the brake ring 15 and expelled between the latter and the wheel rim 29. The brake shoes are each pivoted at 17 to the levers 18, 18<SP>1</SP> and each lever is cranked (Fig. 1, not shown) and has arms of unequal length. The brake ring and spacer element may form a single unit which is connected detachably to the hub; alternatively all three components may be individual but detachably secured together. The hydraulic device 24 may be mounted in the axle body 10 or extend through it, in which case the levers 18, 18<SP>1</SP> are rectilinear. Alternatively, the device 24 may be located between one lever end and the axle 10 and operate the other lever by a rod extending through the axle. There may be two hydraulic cylinders, each located between the axle and one lever.
Patent GB-786485-A (GB)
Title: Improvements in and relating to permanent magnet-excited generators
Inventor: RABY KENNETH FRANCIS
IPC: H02K1/27
Filed: 1954-05-04
Abstract: 786,485. Permanent magnet machines. BRITISH THOMSON-HOUSTON CO., Ltd. May 4, 1955 [May 4, 1954], No. 12974/54. Class 35. A generator has on its rotor a permanent magnet with each of its opposite pole faces abutting a support for a toothed laminated ring, and one ring can be angularly adjusted. As shown, one of the laminated polepieces 10, 11 is angularly adjustable on the end rings 6, 7 between which the annular axially magnetized magnet 4 is held, the adjustment being made during assembly or subsequently to adjust the voltage induced in the stator winding. A magnetizing coil 5 is provided for use during manufacture or for subsequent re-magnetization.
Patent GB-517714-A (GB)
Title: Improvements in welding machines
IPC: B23K11/06
Filed: 1939-05-05
Abstract: 517,714. Collectors. BARTON CONDUITS, Ltd., HOLT, W., and PRICHARDS, A. May 5, 1939, No. 13002/38. [Class 38 (i)] [Also in Group XXII]. A machine for welding tubes, includes a pair of rotatable disc electrodes arranged on opposite sides of the seam and having indirect electrical contact therewith contact discs or rings rotatable with the electrodes and dipping into a container for conducting liquid such as mercury, the contacts being formed with one or more annular grooves co-operating with shaped parts of the container to define a narrow gap therebetween. The electrodes 16, which are spaced apart by an insulating disc 30 of smaller diameter so as to provide an air gap, have arranged on the outer sides thereof copper contact rings 31 which may be nickelplated and are provided with flanges 32 and with cylindrical portions 33 engaging the central holes in the electrodes. The electrodes and rings may be secured together by insulated bolts 34 or each electrode may be secured by studs to the flanges and to each other by separate studs or bolts. The electrodes and rings are located by nuts 36 on a spindle 17, which may be of insulating material or of metal insulated from the contact rings, and which may be stationary or rotatable with the electrodes. The rings may have phosphor bronze bushings 35 or ball or other bearings. The blocks 18 to which the spindle 17 is fixed have brackets 45 provided with insulation 46 on which are supported mercury pots 44 in which dip the contact rings 31. The pots are connected by flexible conductors to the terminals of a transformer and are provided with half-round or V-shaped ribs 50 in their base engaging similar grooves in the contact rings. The pots have gauges or sight glasses and drain taps.
Patent GB-285698-A (GB)
Title: A clip and frame for application to an electric lamp bulb
IPC: F21V17/04
Filed: 1927-05-16
Abstract: 285,698. Bolam, T. H., and Jones, D. L. May 16, 1927, Mounting shades on electric lamp bulbs.-A combined frame and clip whereby a translucent or opaque shade may be applied to an electric lamp bulb comprises a frame a mounted on a wire clip i, j, having at its lower end a ring g, which fits under the bulb l, and its upper end spring arms k which engage the neck of the bulb, and for the great part of their length are in one plane. The frame has a T-slot c, d at the top and turned-up portions f at the bottom for the purpose of removably retaining the wire clip.
Patent GB-593248-A (GB)
Title: Improvements in electrical indicating instruments of the attracted iron type
IPC: G01R5/14
Filed: 1945-05-25
Abstract: 593,248. Electromagnetic ammeters and voltmeters. ENGLISH ELECTRIC CO., Ltd., and MOWL, A. R. May 25, 1945, No. 13182. [Class 37] In an electrical indicating instrument of the attracted iron type wherein a ferromagnetic vane 3 is pivotally mounted for movement within the core at one end of a fixed coil 7, sensitivity adjustment of the instrument is obtained by varying the reluctance of the magnetic circuit according to the position of a further ferromagnetic vane 8 adjustably mounted on the base 9 by means of a clamping screw 10 so that it may be projected within the core at the opposite end of the coil 7.
Patent GB-132353-A (GB)
IPC: F04D15/00
Abstract: 132,353. Stone & Co., J., Parsons, W. S., and Larter, W. H. Sept. 12, 1918. Regulating; multi-stage centrifugal pumps; impellers in parallel.-Two or more impellers are caused to work either in series or in parallel by adjustment of guide-blocks m, s in the suction inlet of the impellers other than the first of the series. The guide-blocks are rotatable around the shaft and are ported so as to connect the suction of the impeller to either the main inlet g or to the discharge from the previous impeller when running as a multi-stage pump. The blocks s, m may be moved by any means such as a worm and wheel gear. Valves p, p<1> in the delivery may be hand-operated independently or in conjunction with the guide-blocks; or these valves may be actuated by the fluid pumped. The pump shown is of the kind described in Specification 107,226.
Patent GB-922131-A (GB)
Title: Process for the manufacture of films and sheets having a reticular or lattice-like structure from synthetic organic polymeric thermoplastic materials
Inventor: MEHNERT KARL
IPC: B29D28/00
Filed: 1959-04-11
Abstract: Films and like sheet materials having a reticular or lattice-like structure and consisting of amorphous or partially crystalline synthetic organic polymeric thermoplastic materials are made by means of the technique used in the manufacture of expanded metal, a film of the material being provided by cutting or punching with slots arranged in parallel rows, the slots of each row being arranged in staggered relation to those of adjacent rows, and the slotted film being then stretched at an elevated temperature which, when the material is partially crystalline, is within the range of the crystalline melting point of the material to 50 DEG C. below this melting point, and, when the material is amorphous, is within the temperature range of the viscoelastic state of the material, either at right angles to the slots or in a direction parallel to the slots or in both directions to such an extent that the linear dimension of the sheet in the stretching direction after the stretching operation is between three and over ten times the dimension before stretching. The slotted film may be stretched in both directions simultaneously or sequentially. The film material may be a polyethylene, a polypropylene, or an ethylenepropylene copolymer, in each case made by the low-pressure process.  Alternatively it may be polyvinyl chloride or polystyrene, provided that the slotted film is produced at an elevated temperature prior to the hot stretching step.
Patent GB-132788-A (GB)
IPC: B60L7/00
Abstract: 132,788. Meyfarth, G. L. Sept. 19, 1918, [Convention date]. Electric and magnetic.-In electro-magnetic track-brakes on electrically propelled vehicles, operated by current from the motors acting as generators, with or without additional current from the trolly-supply, the usual motor-starting resistance W<1> is included in the short-circuit comprised by the motors M, F and brakes S during short-circuit braking, while on changing to additional trolly-supply braking a separate resistance W<2> is included in the short-circuit which shortcircuit is then in series with the starting resistance W<1> between the trolly and earth. The additional trolly-supply will operate the track-brakes. through the motor circuits, in the event of the motors failing to act as generators owing to skidding of the driving wheels. In short-circuit braking, illustrated by Fig. 2, the circuit at first runs earth, contacts 8, 2, starting-resistance W<1>, motor armatures and fields M, F, track-brakes S, earth; but the starting-resistance can be gradually cut out by contacts 3 to 6 to allow full short-circuit braking effect. Contact 7 is also closed with contact 6, so that when the trolly supply is also thrown in for braking by closing contact 1 and opening contact 6, the resistance W<2> is included in the short-circuit. In a modification, the closed short-circuit does not include earth, lying between the trolly and the starting resistance; and the connexions permit the trolly-supply alone to be used for braking.
Patent GB-312471-A (GB)
Title: Improvements in and relating to the dyeing of artificial silk
IPC: D01D10/04
Filed: 1928-05-05
Abstract: 312,471. Courtaulds, Ltd., and Whittaker, C. M. May 5, 1928. Foam, treatment with ; hank apparatus.-Hanks B of artificial silk of low denier per filament are dyed in foam, suspended from a rotating holder, formed for instance of four parallel rods a arranged at the extremities of unequal axes, so that the two hanging sides of the hank alternately approach towards, and recede from, one another.
Patent GB-353533-A (GB)
Title: Wave meter for short electromagnetic waves
IPC: G01R23/04
Filed: 1930-04-30
Abstract: 353,533. Wavemeters. STANDARD TELEPHONES & CABLES, Ltd., Columbia House, Aldwych, London.-(Clavier, A. G. and Darbord, H. R. ; 46, Avenue de Breteuil, Paris.) April 30, 1930, No. 13334. [Class 37.] A wavemeter for short-wave lengths comprises, a pair of rods 1, 2 having a thermo-couple 3 connected at their junction on one side of a metallic screw 4, an indicator G being located at the other side. The rods are adjustable through apertures in the screen and are insulated therefrom thus forming condensers of small importance to highfrequency currents which are confined to one side of the screen, continuous current passing along the rods to the indicator at the other side of the screen. The thermo-couple may be mounted in a vacuum tube, or a bolometer may be used as an indicator. The plane of the rods may be rotated in order to determine the plane in which the waves are polarized. In a constructional form, Fig. 11, the screen comprises relatively rotatable portions 4, 41, the rods 1, 2 passing through an insulating block 17. The portion 41 of the screen carries a member 27 in screw-threaded engagement with a tube 23. A rotatable cylindrical member 31 is located within the tube 23 and is in screw-threaded engagement with a head 33 in which the rods 1, 2 are mounted. An end disc 24 has three rods 36 which pass through apertures in the head 33 as the member 31 is rotated. Scale markings are provided on the parts 411, 34, 25.
Patent GB-454036-A (GB)
Title: Improvements in or relating to vulcanising products
IPC: C08L7/02
Filed: 1935-05-07
Abstract: A vulcanizing product in the form of a colloidal dispersion for addition to a latex bath is produced by mixing an ammoniacal solution of a weakly dissociated zinc salt, in the presence of a weakly dissociated organic substance capable of acting as a protective colloid, and a solution of a weakly dissociated sulphur compound. Zinc salts specified are the carbonate, resinate, oleate and ricinoleate.  Protective colloids specified are albumen, ammonium alginate, casein, gelatine, agar-agar, blood serum and amylaceous glues.  Sulphur compounds specified are ammonium polysulphide, thiosulphates, mercaptobenzothiazol, mercaptans, dithiocarbamates and xanthogenates.  The latex bath so produced, and to which may be added vulcanization accelerators, is stated to be particularly suitable for the impregnation of porous substances such as textiles.
Patent GB-514413-A (GB)
Title: Improvements in or relating to short-circuited rotors for induction motors
IPC: H02K17/18
Filed: 1938-05-05
Abstract: 514,413. Induction motors. SCHWARZ, B. May 5, 1938, No. 13479. [Class 35] In a short-circuited winding some or all of the slot conductors are connected together at least at one end by loops instead of the usual end ring and the main parts of the loops are disposed within the rotor core. In the form shown in Figs. 3a, 3b, the bars 14 disposed in slots 15 have at one end a common end ring 18 and their other ends are connected together by loops 13 disposed in extensions 19 of the slots 15. The core may also have a second set of bars 16 disposed in deeper slots 17 so as to have a higher inductance at starting and a second winding, effective when the motor has reached normal speed is constituted by each bar 16 and an appropriate bar 14 together with the ring 18. The two sides of a loop 13 may be separated by magnetic material or they may be in separate slots in radial alignment with the slots 17. The bars 16 are omitted if a single cage is required. Resistance or inductance may be incorporated in the loops. Fig. 2a illustrates a known form of double cage winding.
Patent GB-598973-A (GB)
Title: Improvements in valve circuits for producing exponential deflecting and centreing potentials
IPC: H03K4/12
Filed: 1945-05-29
Abstract: 598,973. Saw-tooth generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 29, 1945, No. 13490. Convention date, Aug. 20, 1942. [Class 40 (v)] In a saw-tooth generator of the type in which a capacitor in the anode-cathode circuit of a biassed valve is charged during conduction periods, adjustable centering means control the direct potential of one plate of the capacitor. The Figure shows an application to a radar system employing a double transmitting antenna DA<1> controlled by switching means LR<1> to radiate alternately according to overlapping left-hand and right-hand patterns, while synchronized switch LR<11> selects echoes received on antenna DA<11> for display on indicator CR as left or right horizontal deflections on a vertical time base graduated in angle subtended by the reflecting object relative to the vertical. During the interval between synchronising pulses p, valve 34 is held below cut-off by automatic biassing network 39, 41 and sweep capacitor 33 discharges through resistors 43, 58 to a level determined by tapping 11 which is the adjustable centering means. Synchronising pulses p applied through two-stage amplifier 46, 47 render valve 34 conducting for the pulse period, completing the charging circuit to source 42 and producing the flyback stroke of the time base. When conduction ceases capacitor 33 is isolated from the charging source 42 and discharges to the level of tapping 11 to form the time base stroke. A similar stage 37 has the sweep capacitor 36 in the cathode lead to produce an inverted wave-form for push-pull operation, with separate centering means 10. .A setting-up procedure for the indicator is described.
Patent GB-500462-A (GB)
Title: Improvements in or relating to check devices for limiting the extent of movement of hinged doors
IPC: E05C17/24
Filed: 1938-05-05
Abstract: 500,462. Stays for hinged doors. MAIN, Ltd., R. & A., TAYLOR, R., and FORSHAW, A. May 5, 1938, No. 13491. [Class 65 (i)] A stay 23 for a hinged door 13 is pivoted at one end 22 to the door to one side of the hinge axis 12 so as to swing about an axis parallel to that of the hinge, and has at its other end a pin 24 slidable in a guide-way 18 on the door frame 10 extending across the door opening transverse to the hinge axis. A movable abutment 27 is provided in the guide-way between the pin 24 and the hinge to hold the stay in any desired position. An abutment 29 on the door or stay limits the maximum opening of the door.
Patent GB-745231-A (GB)
Title: Improvements in water heaters and steam generators
IPC: F22B21/22
Filed: 1953-05-14
Abstract: 745,231. Forced flow steam boilers; hot-water boilers; tubular heat-exchange elements. WEBB, H. W. B. April 21, 1954 [May 14, 1953], No. 13498/53. Classes 64(1), 64(3) and 123(2). A forced flow, once through steam boiler or hot water heater has an oilfired combustion chamber D lined with banks of water tubes, the combustion gases flowing from the chamber to a stack G through two horizontal passes defined by baffle plates F and in which are disposed further banks of water tubes. The latter tube banks and those lining chamber D are built up from preformed units of the form shown in Fig. 1, each unit consisting of a continuous length of tube which is bent to form an elongated box-like structure wherein straight lengths X of the tube pass diagonally between opposite end return bends which are held in position by welded-on transverse members T. At intervals across the width of the structure some of the straight tube portions such as Y extend along in the plane of the side of the unit to form a support, for example for the baffle plates F. The ends A, B of the tube length protrude from one end of the unit whilst a stud C is welded to a return bend to project from the mid-point of the other end. The units M1, M2 are disposed around chamber D and in the horizontal passes as shown in Fig. 3 and are connected together by U-couplings L, a pump K supplying water from a feed tank FWT through pipes K2, K3 to the serially connected units M1, M2 respectively. The outlets N1, N2 from the units connect with a separator S whence steam is withdrawn through an outlet valve OV. The stud C on each unit engages in a socket C 1  in one end of the boiler casing to hold the unit in position whilst at the other end a removable inspection door E and removable panels such as H are provided to enable any unit to be removed and replaced without disturbing the others. To protect the apparatus against damage due to overheating the studs C projecting from the terminal units M 1 , M 2  bear against members C 2  slidably mounted in the respective sockets C1 and engaging members T1 connected by links to a switch SW, the increased expansion of units M1, M 2  when excessive temperatures occur therein causing the switch to operate to shut down the plant.
Patent GB-972724-A (GB)
Title: Rocket motor
IPC: F02K9/70
Filed: 1962-04-09
Abstract: 972,724. Semi-solid propellent charges; rocket motors. ATLANTIC RESEARCH CORPORATION. April 9, 1962 [May 19, 1961], No. 13519/62. Heading F3A. A rocket motor comprises a casing containing semi-solid monopropellant which forms a viscous pool and has a single exposed upper surface or burning surface when the motor is in an upright position, the gases of combustion being vented out of said casing through a downwardly-directed nozzle which communicates directly with the space above the upper surface and wherein this surface regenerates downwardly during burning in a direction opposite to the direction of thrust. The embodiment of Fig. 3 has rearwardly-directed nozzles 30 at the forward end of a casing 31, each component being lined with insulating material 37, and a spider 39 from which are suspended metal rods or tubes 38 of circular or polygonal crosssection. Burning of the propellant occurs only at its forward face after this has been ignited by a conventional electric igniter and the rods or tubes increase the rate of burning by increasing the available burning area. Conduction of heat by the metal causes the formation of recessed burning areas of conical shape with the rods or tubes passing through their apices. Suitable metals mentioned include copper, silver, aluminium, platinum, palladium, tungsten, magnesium, chromium and steel, the maximum metal thickness being about 0.05 inch. To further increase the burning rate, the metal conductors may be coated with a solid propellant of higher linear burning rate than the monopropellant and to obtain a burning rate intermediate that of the monopropellant with and without bare metal conductors, they may be coated with solid propellant of lower linear burning rate than the monopropellant or with an inert solid insulator such as cellulose acetate, polyvinyl chloride, silicone or an enamel frit. Figs. 5, 6 show a motor of an annular plug nozzle construction wherein a contoured casing 51, made of material such as silica loaded phenolic resin, forms the plug. In this embodiment the rods are replaced by a metal honeycomb structure 55. Instead of rods, tubes or a honeycomb, short lengths of wire or foil, preferably, however, not less than 0.08 inch in length, may be randomly admixed with the semi-solid propellant before it is loaded into the motor. A motor is also described (Fig. 1, not shown) without reference to the presence of metal conductors, in which a nozzle is situated at the rear of the motor and is in communication with the space forward of the fuel by means of a centrally and longitudinaly disposed exhaust stack. Methods of loading the semi-solid monopropellant into the motor and compositions thereof are as described in Specification 972,723.
Patent GB-937612-A (GB)
Title: Dispensing apparatus for tablets and other small unit products
Inventor: JOHNSTON DONALD GORDON
IPC: B65B5/10
Filed: 1959-04-21
Abstract: 937,612. Packaging machines. WARD BLENKINSOP & CO. Ltd. April 21, 1960 [April 21, 1959], No. 13525/59. Class 94(1). [Also in Groups XIX and XXX] Apparatus for dispensing a predetermined number of like small articles into a container comprises means for feeding the articles into conduit means along which the articles can slide freely, means operable alternatively for interrupting the flow of articles at either of two points in the conduit and means for withdrawing the lower interrupting means operable when the container is located beneath the lower end of the conduit, to allow a predetermined number of articles to pass to the container. As described, tablets are placed in a hopper 1 and pass via a conventional electromagnetic vibrator 15 to a smooth circular table 16 which is rotated to cause the tablets to pass via a shoot 21 to a second hopper 23. The hopper 23, which is rotated, is divided into four compartments, Fig. 2, each leading to a channel having an outlet to one of four circular tables 33-36, Fig. 1, disposed at different levels. The tables 33-36 rotate with the hopper 23 and cause the tablets to pass singly into conduits 41 which lead to a counting head 49 having four side-by-side channels. Each channel has stop rods 67, 69 slidably mounted therein, the sum of the distances between the rods 67, 69 for the four channels corresponding to the number of tablets required for the container. In operation, a container to be filled is inserted in the mouth 60 of a block 58 located beneath the ends of the channels, thereby actuating an arm 63 of a microswitch 64 to energize two solenoids (not shown). Energization of the solenoids causes the rods 67 to move to the right and the rods 69 to move to the left thereby allowing the desired number of tablets to fall into the container. When the container is removed from the mouth 60, the microswitch 64 is opened and the rods 67, 69 return to the position shown, thereby allowing the tablets in the channels to move downwards so that the lowest tablets contact the arms 69.