baber/WOPTO huggingface dataset:
Patent GB-804427-A (GB)
Title: Improvements in or relating to magnetic signalling systems for railways
IPC: B61L1/08
Filed: 1956-02-17
Abstract: 804,427. Railway signals. SOC. INDUSTRIELLE DE LIAISONS ELECTRIQUES and HOURS, G. E. Feb. 17, 1956 [Feb. 17, 1955], No. 5048/56. Class 105. A magnetic signalling system for railways, comprises an inductor 1, in the form of a magnet, and a receiver 2 which includes a magnetic circuit, mounted for relative movement with respect to each other, the receiver comprising a signalling armature 15 associated with the magnetic circuit and biased as by a spring 17 towards its open position, the magnetic circuit having therein a normal flux, produced, e.g. by two windings 13, 14 on respective cones 11, 12, capable of holding the armature in its closed position against the bias of spring 17, and including a yoke 7 for cooperation with the magnet 1 which when in register with the yoke 7 induces in this latter a magnetic flux in the same direction as the normal flux and which is such that the reluctance of the yoke is increased to a value at which the flux in the magnetic circuit is insufficient to hold the armature in the closed position, whereupon the armature moves away from the cores 11, 12 to change over the contacts 21 from fixed contact 23 to fixed contact 22. The yoke 7 is made of an alloy, e.g. Mumetal (Registered Trade Mark) the permeability of which falls rapidly in response to increasing induction within a certain range of variation of the latter, the flux circulating through the magnetic circuit being arranged to fall within that range. The yoke 7 has a cross-section which offers a reluctance which increases sufficiently to release the armature 15 in the presence of flux in the yoke due to the magnet 1 and is just sufficient to permit a flux large enough to hold the armature 15 in the closed position in the absence of the magnet 1. The yoke 7 co-operates with the magnet 1 through extensions of the yoke 7 which do not form part of the magnetic circuit through the cores 12, 13. These extensions serve to prevent excess flux from the magnet from passing directly into the magnetic circuit in a direction opposite to that of the normal flux. A copper ring 26 is mounted around the yoke 7 to accelerate the reduction in the secondary flux by intervening when relative speed between the inductor and receiver is high. A double receiver with two armatures is also described.
Patent GB-1402484-A (GB)
Title: Ground range computer
IPC: G06G7/78
Filed: 1973-02-01
Abstract: 1402484 Aircraft range simulator SINGER CO 1 Feb 1973 [3 Feb 1972] 5062/73 Heading G4G In a simulator, the ground range Rg of the nadir of a point in space of altitude h is calculated from known altitude (h) and slant range (R s ) values by using the equation where K is a constant equal to the velocity of a (airborne) radar pulse used for estimating slant range. As shown, a signal -K<SP>2</SP> is integrated in integrator 89 over a time t to provide the numerator of the integrand, the time t being determined by the output of the radar sweep generator which controls the reset switch 49. The quotient is formed in divider 45 and integrated in integrator 91 to provide -R g . This value is inverted by amplifier 53 and the loop closed by feeding Rg as denominator to the divider 45. Outputs R s  and Rg are obtained respectively at terminals 24, 35. Amplifier 51 compares H (height above ground) with R s  and controls switch 63 of integrator 91 to ensure that a non-zero output is obtained only when t>H/K. Whilst R s  is less than H the divider 45 will saturate and will not recover immediately, thus producing an error in Rg. The error increases with H (or h, measured above sea level) and, therefore, a compensating signal is derived from h in the circuit 93 and fed to the input of amplifier 53. The circuit 93 includes a scaling network 75, 83 and an adjustable limiting network 85, 87. The resulting function of h is fed to the input of amplifier 53 through switch 81 which operates at the same time as the switch 63. To avoid undesirable transients, a further switch 73 operates at the same time as switch 81 and connects the output of circuit 93 to ground through a resistance 71. The circuit forms part of a flight simulator (Fig. 1 not shown) with output in the form of a CRT display.
Patent GB-498439-A (GB)
Title: Improvements in electric transmission circuits
IPC: H03G5/04
Filed: 1938-02-18
Abstract: 498,439. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd. Feb. 18, 1938, No. 5170. Convention date, April 26, 1937. [Class 40 (iii)] An attenuation network comprises series impedances Z1, Z2 in parallel with series impedances Z3, Z4, the output being taken from a potentiometer AB, while Z1, Z4 vary directly (or inversely) with frequency and Z2, Z3 vary inversely (or directly) with frequency. Z1, Z4 may be condensers and Z2, Z3 may be inductances. The two arms Z1, Z2, and Z3, Z4 may be earthed through a common impedance Z5, Fig. 2 (not shown). The potentiometer AB preferably absorbs no current. According to the Specification as open to inspection under Sect. 91, a network of resistances R1, R2, Fig. 3 (Cancelled), and condensers C1, C2 may be used in the output circuit of a valve L. This subject-matter does not appear in the Specification as accepted.
Patent GB-369347-A (GB)
Title: Improvements in or relating to windows
IPC: E05C17/28
Filed: 1931-02-18
Abstract: 369,347. Window stays. WAKE, I., 1454, Iriyamayu, and KABUSHIKIKAISHA FUJI SASH SEISAKUSHO, 165, Araizyuku, both in Iriarai-machi, Tokyo-fu, Japan. Feb. 18, 1931, No. 5185. Convention date, May 31, 1930. [Classes 44 and 65 (i).] In a device for securing a hinged window 4 in any adjusted position, of the kind comprising a stay 5 pivoted to the window and to a bar 3 slidable in a channel guide 2 fitted in the window frame, the channel 2 is cut away at 6 to accommodate an L-shaped locking-member 6 which abuts against two adjacent sides of the bar 3 and is pressed into holding engagement therewith by a set-screw 8 mounted in the outer channel frame 1. The screw 8 bears against the vertical side of the member 7 at a point above the upper surface of the bar 3, vertical displacement of the latter being prevented by an inturned flange 2<1> provided on one of the upper edges of the guide channel 2.
Patent GB-542026-A (GB)
Title: Improvements in pipe unions
IPC: F16L19/065
Filed: 1940-03-20
Abstract: 542,026. Pipe joints. NOBLE & LUND, Ltd., and HEPPLEWHITE, R. March 20, 1940, No. 5203. [Class 99 (i)] A joint for connecting pipes 1, 2 without the necessity of flanging, screwthreading, or finishing the pipe ends comprises a pair of sleeves 3, 4 of white metal, aluminium, copper, brass or fibre which are an easy sliding fit on the pipes, and are compressed thereon and so that their flat ends abut, by union nuts 5, 6. As shown, the inner faces of the nuts are coned to the same angle as the sleeves ; but in a modification the sleeves may be of rectangular cross section. Where a pipe is to be joined to an elbow, teepiece &c. of larger diameter, a single sleeve is fitted on the pipe and is compressed thereon, and so as to abut against the end of the elbow &c. by a nut having screwthreaded engagement with the outer surface of the elbow &c.
Patent GB-194523-A (GB)
Title: Improvements in plate and like heating racks for gas and oil cooking stoves and the like
IPC: F24C15/12
Filed: 1922-02-23
Abstract: 194,523. Oakley, P., Allender, J. J., and Stoves, Ltd. Feb. 23, 1922. Plate racks.-A plate and like warming rack, of the kind comprising a frame c fitted with spaced bars e and attached to an horizontal slotted bar a, adapted to be adjustably secured to vertical pillars carried by the hot-plate of a gas or oil cooking- stove, is provided on the underside with a sheet of wire or like netting f to support the lower edges of the plates or the like when placed vertically between the bars e. The netting f is attached to the side members of the frame c and may be in the form of a flat sheet or curved to conform to the curvature of the lower edges of the plates.
Patent GB-739942-A (GB)
Title: Improvements in or relating to inductors
Inventor: GLOVER WILLIAM FRANK
IPC: H04M1/02
Filed: 1954-02-23
Abstract: 739,942. Inductors. STANDARD TELE. PHONES & CABLES, Ltd. Feb. 23, 1954, No. 5287/54. Class 38 (2). A variable inductor comprises a core including two parts 16, 27 of magnetic ferrite each having a projection to form a central stem around which is placed the coil 19 on a former 18, and cemented respectively to a conducting case 11 and its cover 10 so that upon rotation of this cover relative to the case, the two core parts rotate relatively so as to vary the shape of the airgap lying between the opposing faces of the core parts. These faces are inclined at an angle to a plane perpendicular to the core axis. The magnetic circuit is completed by a cylinder 20 of magnetic ferrite surrounding the coil 19, and provide continuous force to hold the core parts together, the cover 10 is made of corrugated resilient metal such as beryllium copper. The cover 10 is clipped on the case 11 and held in position by a circlip 31 which is located in indentations in both cover and case, whereby relative rotation without axial movement is possible. The terminals 24 are mounted on plate 25 covering a hole in the case, and feet are formed from base 14 of the case. To make the inductance core permeability independent of temperature core parts 16, 27 may have suitable positive and cylinder 20 suitable negative temperature coefficients of permeability. Specification 723,846 is referred to.
Patent GB-1040501-A (GB)
Title: Improvements in and relating to rotating impeller pumps
IPC: F04D29/44
Filed: 1964-02-07
Abstract: 1,040,501. Centrifugal pumps. W. MURRAY. Feb. 19, 1965 [Feb. 7, 1964], No. 5331/64. Heading F1C. The end of the pump diffuser 12 is closed save for a restricted outlet orifice provided by a plate 13. Preferably, the orifice wall 14 is conical or flared and contracts towards the delivery end. By the use of an orifice of appropriate size, the delivery pressure is reduced to the desired value. Cavitation effects and noise are also reduced. Preferably, the distance between the tips of the impeller blades 8 and the peripheral wall 10 of the pump casing is greater than usual.
Patent GB-1277184-A (GB)
Title: Air-discharge nozzle for a heating or ventilating system
Inventor: GODSON DAVID
IPC: B60H1/34
Filed: 1970-02-04
Abstract: 1277184 Valves BRITISH LEYLAND (AUSTIN MORRIS) Ltd 19 April 1971 [4 Feb 1970] 5363/60 Heading F2V [Also in Division F4] An air flow passage through an air discharge nozzle 1 is controlled by a tube 9 of resilient, stretchable and air-impermeable material having one end fixed to the nozzle 1 and the other end fixed to a ring 12 which is rotatable relative to the nozzle 1, whereby the tube 9 may be twisted about its longitudinal axis to close the passage. The ring 12 is manually operable by a knob 14. The tube 9 is made of plastics or natural or synthetic rubber of thickness 0À0025 inch.
Patent GB-100729-A (GB)
Title: Improvements in Matrix Bars for Type Bar Making Machines and in the Type Bars Produced thereby.
IPC: B41B5/02
Filed: 1916-04-12
Abstract: 100,729. Ludlow Co., (Assignees of Reade, W. A.). June 19, 1915, [Convention date]. Type-bars 36 are formed with a wide head and n characterbearing part or entablature 39 of less width than the head.
Patent GB-1490913-A (GB)
Title: Forming and filling casings
IPC: B65B9/20
Filed: 1975-02-07
Abstract: 1490913 Packaging apparatus and process KUREHA KAGAKU KOGYO KK 7 Feb 1975 [8 Feb 1974] 5425/75 Heading B8C [Also in Divisions A1-A3] In a method of, and apparatus for, forming and filling a tubular film casing 10 to provide a product, e.g. a sausage, curved along its length, a film 8 of thermo-shrinkable synthetic resin has its opposed edges overlapped by a forming device 2 and fused to form a tubular film casing 10, material such as ground meat or cheese to fill the casing 10 is supplied via a stuffer nozzle 7 which passes through the forming device 2, and heating means 14 positioned along the path of travel of the casing 10 intermediate the forming device 2 and the position at which filling is completed heats a portion of the tubular film casing 10 corresponding to only a part of the circumference thereof and extending along the length of the casing so that the resultant filled product 13 becomes curved along its length when the casing 10 has shrunk due to subsequent heat treatment. The heating means 14 is disposed outside a sizing ring 4, preferably of PTFE, over which the tubular casing 10 passes, and may comprise an electric heater, an infra-red radiator, or, as shown, a hot air blaster with a bank of vanes 16 variably positioned to control the hot air flow. The proportion of the casing 10 circumference subject to heating is between 40% and 60%, preferably 50%. A cooler 15 is provided just downstream of the heater 14. The overlapped edges of the plastics film 8 are fused by a high frequency heater 3 with electrodes 3a, 3b to form the tubular casing 10, which is drawn over the sizing ring 4 by winding rollers 5. The filled casing is tied at fixed intervals by a binding device 6 which applies pairs of aluminium wire ties 12, 12<SP>1</SP> between which the casing may be severed. The cased product passes to a hot water or steam bath, not shown, where the contents are sterilized and the casing heat shrunk to take up the characteristic curved form. Suitable materials for the plastics film 8 are a copolymer film of vinylidene chloride with a monomer copolymerizable therewith, thermoshrinkable nylon, polypropylene, polystyrene, or PVC film; thermo-shrinkable three-plyfilm of ethylene-vinyl acetate copolymervinylidene chloride copolymer-ethylene-vinyl acetate copolymer; or a three ply film of polyethylene-vinylidene chloride copolymer-polyethylene.
Patent GB-1299347-A (GB)
Title: Electric power transmission system including pressurized pipe having central conductor and providing an expansion joint and gas-barrier construction
IPC: H02B13/02
Filed: 1970-02-05
Abstract: 1299347 Power transmission systems WESTINGHOUSE ELECTRIC CORP 5 Feb 1970 [17 March 1969] 5489/70 Heading H2C [Also in Division H1] A power transmission system comprises an outer metallic pipe 28 containing a dielectric fluid under pressure, at least one high-voltage conductor 23 disposed along the axis of the pipe, a plurality of disc-type insulators (17, Fig. 3, not shown) spaced axially along the conductor 23 for supporting it, an enlarged expansion joint 19 extending radially outwardly from the pipe 28, and an insulating disc 21 extending into the joint 19 and having a perforated metallic cylindrical barrier member 25 at its outer periphery. The insulating disc 21 and the associated barrier member 25 serve to localize the damage in the eventof a fault or short-circuit, as the transient pressure caused in the gas enclosed is reduced by making the gas pass around the disc 21 and via the perforations in members 25. Additional venting holes (30. Fig. 5, not shown) may be provided in the conductor 23. The expansion joint 19 may be sealed in a gas-tight manner and the inner conductor 23 replaced by 3-phase conductors.
Patent GB-950912-A (GB)
Title: Improvements in or relating to trailer type multi furrow ploughs
IPC: A01B3/46
Filed: 1962-02-13
Abstract: 950,912. Agricultural implements. D R. BOMFORD. Jan. 11, 1963 [Feb. 13, 1962], No. 5500/62. Heading A1B. A trailer type reversible multi-furrow plough comprises a beam 11 which is rotatable about a longitudinal axis and is provided with a ground wheel mounted on a structure 40 about which the beam is pivoted in a shaft 36. In order that the wheel structure may remain in contact with the ground as the beam is rotated, a stablizing element 54 is connected to the structure 40 and to the frame 9 or to the tractor. As shown the element 54 is provided with flat ends 53, 53a which engage in slots formed between plates 52 and 52a.
Patent GB-548366-A (GB)
Title: Improvements in or relating to header or upsetting machine
IPC: B21K1/44
Filed: 1941-04-29
Abstract: 548,366. Heading machines. WILCOX, R. L., and WATERBURY FARREL FOUNDRY & MACHINE CO. April 29, 1941, No. 5539. [Class 83 (iv)] The header slide 12 carries punch slides 18, 19 movable simultaneously at or near the end of the retracting stroke to change the punches that are in operative relation with the dies 14. The punch slides are guided by dovetail side gibs 17 and a central rectangular gib engages grooves in each slide. Downward movement is limited by bolts 54 with nuts 53 and upward movement by screw 52, and is imparted by a pair of back levers 42 linked one to each slide and acted on by pairs of spring plungers 45 carried by a cradle from the header slide and rocked by linkage 37, 36, 34, 31 from a cam 30. The link 31 is guided by a sliding engagement with a block 32 loose on the cam shaft. When the punch slides are arrested, the spring plungers allow a slight further movement of the cradle so that the levers 42 are held in their rocked positions by plungers acting on one side only nuts 49 maintaining the plungers acting on the other sides inoperative. The heading mechanism can be employed in various ways :-with two independent rod feeds to produce two blanks at each pair of strokes ; to produce trimmed heads of polygonal shape, a cylindrical head is produced in two blows by one slide, the blank is hammered to the second die in which the head is finished and ejected through the trimming die ; to produce blanks from oversize wire, the shank is extruded in the first die and the unextruded portion is upset in the second die ; blanks may be headed in three blows the second blow of the second slide effecting the trimming ; or heads requiring four blows may be produced.
Patent GB-472154-A (GB)
Title: Improvements in or connected with wheeled toys
IPC: A63H7/04
Filed: 1937-02-24
Abstract: 472,154. Wheeled toys. PITRMANN, J. Feb. 24, 1937, No. 5548. [Class 132 (iii)] In a wheeled animal figure wth a wagging tail, the tail m envelops the bent end l of a vertical rod-shaped member h which is wholly or partially rotated either from the wheels c, as shown, or by clockwork means. The connecting rod n is a strip of metal bent round the crank of the wheel axle and perforated to take the crank k of the vertical rod.
Patent GB-544389-A (GB)
Title: Improvements relating to laths for supporting building boards
IPC: E04B2/58
Filed: 1941-04-30
Abstract: 544,389. Wall and ceiling linings. HAY, H. M. April 30, 1941, No. 5608. [Class 20 (iv)] Lining boards d are supported against metal laths a by clips c secured by screws b passing through the laths, the clips being inserted longitudinally between the edges of the boards and then held against rotation in a transverse position while being drawn by the screws. The clips may be of channel section to engage in their transverse position ridges projecting from the laths. The ends of the boards are supported by short transverse laths resting on opposed flanges of the main laths. Specification 533,541 is referred to.
Patent GB-1353742-A (GB)
Title: Axle load measuring mechanism
IPC: G01G19/10
Filed: 1970-02-06
Abstract: 1353742 Vehicle axle load measurement C W SEWELL 5 May 1971 [6 Feb 1970 21 Sept 1970] 5750/70 and 44857/70 Heading G1W Axle load measurement on a vehicle having a spring suspension is by a hydraulic load sensing device arranged to bear at least a portion of the load between a spring and the chassis or axle, at least during a measuring operation. In Fig. 2, one end of a leaf spring 18 is pivoted to a lever 103 which is pivoted at 105 to a chassis bracket 100. In normal use, an abutment surface 109 on the lever, directly above the spring eye 102, bears on an abutment surface 110 of the chassis. For load measurement, pressure fluid is supplied to a cylinder 125 to urge a piston 124 rightwardly Fig.2 to act via a plunger 120, a bell crank 115, and a link 114, pivoting the lever 103 to separate the surfaces 109, 110 so that a part of the spring- load is reacted by the fluid-pressure. As the piston approaches the cylinder end wall 122, the end 145 of a valve stem 130 abuts the wall to open a bleed passage 135 through the piston. The equilibrium pressure of the fluid is a measure of the spring-load. The spring associated with each wheel of the vehicle has a unit as shown in Fig. 2, the low pressure ends of the respective cylinders being connected to a reservoir 154 Fig.4 of a pump-distribution valve assembly. A pump having a manually actuated plunger 157 supplies pressure-fluid to a valve chamber 167 to which is connected a pressure gauge 169. A rotary distribution valve 181 positioned by a handle 178 allows the valve chamber 167 to be connected to the high-pressure end of a selected cylinder 125, or to the reservoir 154, so that the load on each wheel can be measured separately. In Fig. 11, a diaphragm type load cell is used, acted on directly by the lever 426 to which the spring 414 is pivoted. Stops 456, 462 limit the movement of lever 426. The load cell may function as a damper during vehicle operation. In Fig. 9, a helper spring 210 is positioned above a main spring 202. A lever 219 is interposed between the end 214 of the helper spring and a chassis bracket 218, the lever 219 being connected by a link 231 to the lever 234 to which the main spring 202 is pivoted, so that when the load cell is pressurized to separate lever 234 from the chassis abutment, lever 219 is pulled clear of the bracket 218. The invention may be used with a helical spring suspension Fig. 10, (not shown).
Patent GB-903712-A (GB)
Title: Improvements relating to signalling and control systems for the discharging of coke from horizontal coke-oven batteries
Inventor: NASH CYRIL WILLIAM
IPC: C10B41/02
Filed: 1958-02-21
Abstract: 903,712. Radio-transmitting systems. WOODALL-DUCKHAM CONSTRUCTION CO. Ltd. April 21, 1959 [Feb. 21, 1958], No. 5759/58. Class 40 (5). In a safety device for accurate alignment of the discharge machine 9, and ram machine 5, of a multiple oven coke oven battery 1, a u.h.f. transmitter (of a frequency in the range 450- 6000 mc/s.) 20 controlled by switch 20a, and having aerial 21, is mounted on the discharge machine. A corresponding receiver 26 having aerials 24, 25, is mounted on the ram machine. When the two machines are correctly aligned, reception along the line of sight path 22 through the space above the charge in the oven is so much stronger than that along other paths received by the upper aerial 25 that receiver 26 operates a relay 27, whose contacts 28 prepare the ram machine for operation. Specification 903,711 is referred to.
Patent GB-194296-A (GB)
Title: Improvements in or relating to sheet delivery mechanism for printing presses
IPC: B65H29/12
Filed: 1922-07-27
Abstract: 194,296. American Type Founders Co., (Assignees of Kelly, W. M.). Aug. 6, 1921, [Convention date]. Delivery apparatus.- The delivery mechanism of a cylinder machine is so arranged that it can be raised to enable the operator to pass between the delivery table and the bed to have access to the forme. The invention is especially applicable to printing- machines . having bed-reciprocating motions as described in Specification 184,175. The sheets after being printed are stripped from the cylinder by strippers and delivered by rollers to tapes 260 and cords 266 mounted in a frame 261 pivoted at 262. The tapes and cords are driven by gearing from the impression cylinder so arranged that frame 261 can be raised about its pivot without disturbing, the driving connection. When so raised, the operator can pass between the bed and the delivery table, which occupies a position to the right of the frame 261, Fig. 2, and access to the forme is thus rendered easy. The delivery rollers 319 are mounted in bifurcated arms frictionally held to the shaft 300 by a spring-pressed radial plunger 325 mounted in a member eccentric to shaft 300, and adapted to exert a greater frictional resistance on the arms when the rollers 319 are raised. Normally, however, the arms can slide along the shaft 300 readily.