baber/WOPTO huggingface dataset:
Patent GB-572781-A (GB)
Title: Improvements in electric resonant chambers
IPC: H01P7/04
Filed: 1943-04-30
Abstract: 572,781. Coil - less resonators. MOULLIN, E. B., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. April 30, 1943, No. 6891. [Class 40 (iii)] A resonator comprises coaxial cylinders a, a<1>, Fig. 4, secured respectively to fixed and moving partitions b, c, the frequency of vibration in the preferred mode being determined by the relativediameters of the cylinders and the angle between the partitions and being independent of the length of the cylinders. Unwanted modes of oscillation are inhibited by providing radial or circumferential slots in the end plates or by longitudinal insertion of high-resistance material along lines of the inner surface of the outer cylinder at which maximum current density of oscillations in unwanted modes occurs. The end plates are divided along a line of approximately zero current for the wanted mode, that is, for all frequencies within the range of adjustment of the vanes, on a circle of radius equal to or just less than R1/R2/2, where R1, R2 are the radii of the respective cylinders. In a practical oonstruction, Fig. 10, the inner cylinder a<1>, to which is attached the moving partition c, has bearings in cover-plates d and the fixed partition b is secured to the outer cylinder a which also carries annular diaphragms i having an internal diameter rather less than R1+R2 and engaged by the ends of the adjustable partition. The. movable cylinder a<1> carries diaphragms g held in contact with the ends of the fixed vane by springs h. Further springs (not shown) may be provided between the cover-plates and the outer diaphragms to ensure good contact between these and the ends of the movable vane. The device may have a handle j<1> for ready adjustment or may be pre-set in the factory. It can be compensated for temperature variations by making the cylinders of materials with linear coefficients of expansion in inverse ratio to the respective radii.
Patent GB-525905-A (GB)
Title: Improvements in or relating to electrically operated fluid heater cleaner systems
IPC: F28G15/00
Filed: 1939-03-02
Abstract: 525,905. Control of several motors. JONES, H. PRYCE-, and SWEENEY, A. E. March 2, 1939, No. 6913. [Class 38 (iii)] The blowers of a fluid heater cleaner system are operated by individual electric motors 14, 15, .... under the control of a sequence switch comprising movable contacts 4-6 arranged in different positions to engage different contacts 8-13 connected with the respective motors so that automatically, selectively, and sequentially the motors are energized, the supply to the sequence switch during movement of the contacts 4-6 from one position to the next being interrupted by a main contactor 33. The automatic sequence is started with a switch 60 in the position shown and a hand-wheel 20 operated to move the contacts 4-6 in its first operative position. A start switch 74 is then closed to close the contactor 33 which maintains itself over contact 52 of an interlock contactor 50. While the first blower is operating the switch 60 is moved to its automatic position. As the first blower completes its operation, contacts 49 close momentarily to energize a time relay 66 which energizes a further time relay 67. This latter relay operates to energize the contactor 50 to open the main contact or 33 and de-energize the relay 66. The relay 67 de-energizes the contactor 50 after a time interval. The main contactor in opening de-energizes the sequence switch and at contacts 37 energizes a contactor 57 which closes to energize a solenoid 30 this latter operating also on a dash pot effects through a pawl and ratchet wheel a step of the movable contacts of the sequence switch. As this step movement is completed contacts 31 close to re-energize the main contactor. Thus the second blower is operated and the cycle repeated for each blower until contacts 64 open in the normal off position of the sequence switch. The main contactor 33 may be opened at any time by a step switch 63 and with the switch 60 in its hand position the sequence switch may be moved by hand to allow operation of any derived blower under control of switch 74. Any motor may be removed from the sequence by the removal of plugs in the connections between the motor and the sequence switch and 'the connection to the switch 49. The stepping of the sequence switch through the position corresponding to an isolated motor is effected by the insertion of a plug which short-circuits the contacts of the switch 49. Indicator lamps 18 may be energized by additional contacts of the sequence switch and over contacts on the switch 33. Alternatively an indicator disc may be attached to the sequence switch spindle and illuminated by a lamp controlled by the contactor 33.
Patent GB-673239-A (GB)
Title: Method of treating plaster moulds and other plaster bodies
IPC: B28B7/34
Filed: 1950-03-21
Abstract: 673,239. Plaster moulds. RAM, Inc. March 21, 1950 [Aug. 2, 1949], No. 6944/50. Classes 22 and 87(ii) Plaster bodies, particularly moulds, are rendered permeable by purging them of held water and water soluble solids after the initial set of the plaster and prior to the final set, thereby inhibiting further crystal growth. Pressure, to a maximum of 150 p.s.i., is gradually increased during the purging, and warm dry air is preferred. Permeability is maintained by purging after each time the mould is used. Retarders and acceleraters may also be present and are removed in the purging after they have fulfilled their function.
Patent GB-571459-A (GB)
Title: Improvements in or relating to grabs and like devices
IPC: H01K3/32
Filed: 1944-04-17
Abstract: 571,459. Holding tools. HARVEY, H. H. April 17, 1944, No. 7100, [Class 61 (ii)] A device for removing electric lamp bulbs, also applicable for gripping other articles such as fruit, in which case it may be provided with a basket or container therefor, comprises a number of two-armed gripping levers 28 pivoted at 22 to a head 16 on a tubular shaft 12 and actuated to grip the lamp by a cone 24 engaging the ends 29 of the levers and pressed upwards by a compression spring 40, the levers being retracted by a pull wire 56 extending down the shaft 12. The lamp shade may be gripped during the removal of the. lamp by other gripping levers 64 mounted in brackets on a ring 60 rotatable and axially movable on the head 16 which gripping levers 64 are manipulated by an outer tubular shaft 76. In a modification, the tubular shaft is made up of a number of connectible sections with the interior pull wire elements fitted with pin-andsocket connections and the lamp shade is adapted to be gripped by a single pivoted jaw lever with a pivoted clamping jaw actuated by a pull wire, the pivoted jaw lever being protected by a projecting fence when the device is laid down.
Patent GB-101134-A (GB)
Title: Improvements in or relating to Padlocks, Bolts and like Fastening Devices.
Inventor: MAASHANT CORNELIUS
IPC: E05B39/02
Filed: 1916-05-18
Abstract: 101,134. Maashant, C. May 18, 1916. Seal locks and fastenings.-In seal lock or fastening of the kind in which the seal is advanced on closure of a locking-member so as to come into position to be destroyed by a seal-destroying device on opening the locking-member, the seal e is carried in a recess in a member a, such as the shackle of a padlock, and is moved, on closure, so as to be engaged by a claw g within a casing c. Inspection of the seal is allowed by an opening closed by a transparent plate p.
Patent GB-459008-A (GB)
Title: Improvements in or relating to automatic heliostats
IPC: F21S11/00
Filed: 1936-03-10
Abstract: 459,008. Heliostats. BENGUE, F. J. M., 24, Fitzroy Street, London. March 10, 1936, No. 7214. [Class 97 (i)] In an automatic heliostat comprising a mirror rotatable about two axes at right angles to each other by means of motors controlled by switches actuated by the sun's rays, so as to stabilize the direction of the rays reflected by the mirror, the rotatable parts supporting the mirror are mounted on anti-friction bearings and have no mechanical connections with external driving forces, these parts being designed so that their moments of inertia about their axes are large. The mirror 1 is carried by a cradle 2 which is rotatable about the horizontal axis H-H<1> in a frame 3 rotatable about the vertical axis V-V<1> in a fixed support 5, the rotary axles being mounted in ball bearings 6 &c. The moments of inertia of the cradle 2 and frame 3 are increased by weights 7, 7<1>, 9, 9<1> and balancing weights 8 are also provided. Rotations of the mirror about its two axes are effected by motors 11, 12 provided with airscrews 13, 14. these motors being secured to the frame 3 and cradle. Each motor is controlled by two independent switches actuated by the sun's rays, one of these switches being arranged to receive direct sunlight and controlling the corresponding motor so as to bring the mirror approximately into its correct position, while the other switch is actuated by light reflected by the mirror and controls the final fine adjustment of the mirror. The switches are of the kind comprising a mercury tube 20, Fig. 3, connecting two hydrogen-filled bulbs 21, 211 between which is a member 24, both surfaces of which are reflecting. The tube has three electrodes 22, 23, 23<1>, and a circuit is cornpleted between the electrode 22 and one or other of the electrodes 23, 23<1> to start the corresponding motor in one direction or the other, according to which of the bulbs receives sunlight from the reflector 24. The switch 25 controlling the initial adjustment about the vertical is mounted on the upper end of the axle 4, while the switch pertaining to the horizontal axis consists of bulbs 28 secured to the frame 3, and a mirror 29 connected by gearing 31, 32, 33 to the horizontal axle of the mirror 1 so as to turn at twice the angular velocity thereof, the mirror 29 being vertical when the mirror 1 is horizontal. The switches controlling the fine adjustment of the mirror are mounted on the frame 3 so as to receive sunlight reflected by the mirror 1, and by a stationary mirror 51, the four bulbs 36, 361, 37, 371 pertaining to these switches being arranged at the corners of a square above reflectors 38. These bulbs may contain heating elements 40a, 40b, Fig. 6, arranged in series in the circuits closed by the switch to prevent the mercury from moving substantially beyond the point at which contact is made. Means are provided for rendering the switches 25, 28 inoperative when the fine adjustment switches come into action.
Patent GB-697035-A (GB)
Title: Improvements in or relating to article gathering apparatus
IPC: B65G57/18
Filed: 1951-03-30
Abstract: 697,035. Bundling-machines. UNITED ENGINEERING & FOUNDRY CO. March 30, 1951 [April 1, 1950], No. 7408/51. Class 94(i) [Also in Group XXX] In apparatus for facilitating the bundling of rod-shaped articles, such as metal bars or tubes, the articles are deposited in the loops of a number of spaced chains or cables which are lengthened automatically as the articles are received so that that top of the pile remains at a substantially constant height. As shown, the articles are fed on to downwardly-sloping slides 13a, provided with shock-absorbing stops 16, and are transferred by rotary elevators 31 on to skids 36 secured to cradles 37. A number of chains 38, extending across the mouths of the cradles, are attached at one end 39 to the cradles and at the other end to drums 52 on a transverse shaft 49, and pass over sprockets 41 on short shafts 42 coupled by chain and sprocket gearing to a transverse shaft 44. The shaft 49 also carries a drum 54 to which are secured two cables 55 which pass over sheaves 56 and are connected to a weight 60. The shaft 32 of the elevators is driven through reduction gearing by a motor 35a, and the shaft 49 is driven through a clutch 59 and reduction gearing 58 by a motor 58a, the circuits of the motors including switches 67 actuated by spring-loaded levers 61 which are arranged at each side of the skids 13a so as to be depressed by the articles on the skids. The motors are, accordingly, energized each time an article arrives at the stops 16 to operate the elevators and cause the chains to be paid out from the drums. The circuits of the motors also include switches arranged in parallel with the switches 67 and operated by rotary cams so that after the last article of a group to be bundled has been transferred from the skids and the levers 61 rise to allow opening of the switches 67, the motors continue to rotate for a short period to position the fingers of the elevators ready for engagement with the next article fed on to the skids and to pay out the appropriate length of chain. After the bundle of articles has been removed from the loops, the clutch 59 is disengaged and the weight 60 returns the chains to their initial positions. The stops 16 are secured to rods 19 slidable in a frame 17 movable in a guide 18, the opposite ends of the rods being secured to a member 22 which is urged away from the frame by springs 21, 23. The frame is adjustable by screws operated by an electric motor to vary the position of the stops relative to the elevator and hence the number of articles transferred at each rotation of the elevators.
Patent GB-1519202-A (GB)
Title: Assembly comprising an electrical connector
IPC: H01R4/22
Filed: 1975-05-29
Abstract: 1519202 Electrical connectors RAYCHEM CORP 29 May 1975 [3 June 1974] 07455/78 Divided out of 1519201 Heading H2E Two cables, e.g. coaxial cables, each having an inner and an outer cable separated by a dielectric and a stripped end portion, are connected to a device. The device has an electrically conductive body in electrical contact with the outer conductor of each cable which enter the device at respective open ends thereof. A plurality, e.g. two pairs, of projections extend from the body which, as described, extend into holes in a printed circuit board to provide an electrical connection between the outer cable conductors and (a) circuits) on the board. At least one tab is electrically connected to the body and projects towards the interior thereof, the tab contacting a stripped portion of the dielectric of each cable.
Patent GB-751790-A (GB)
Title: Electric motor with brake
IPC: H02K7/12
Filed: 1954-03-15
Abstract: 751,790. Electric-motor brakes. FODGAARD, M. March 15, 1954 [March 17, 1953], No. 7504/54. Class 103 (1). [Also in Group XXXV] In an electric motor, used for hoisting winches and cranes, machine tools, textile machines, conveyer plants, &c., which incorporates a brake the two co-operating parts of which are mounted on the rotor and in the stationary part of the motor and which brake is engaged when the motor does not develop torque and vice versa, releasing of the stationary brake part from the rotor brake part is effected in response to torque produced by the motor-operating current by permitting a limited angular movement of the stator 14 about the rotor axis. As shown, the stator 14 is disposed in a tube 15 supported by balls 16 or rollers in the motor housing 1 and when moved angularly is also moved axially whereby the end 17 of the tube controls the axial position of a brake lining holder 9 having a conical lining 11 engageable with the complementary lining 12 of a wheel 13 secured to the rotor shaft 5. The holder 9 is urged by compression springs 10 to a position of brake engagement, see top half of Fig. 1, and is released, see bottom half of Fig. 1, by the torque actuated axial stator movement which is effected by sets of contact surfaces 18 ... 20 arranged in the end of tube 15 and engaged by rollers 23 accommodated on projections 22 on the end shield 4. The two surfaces 18, 19 are to operate the brake with either direction of motor rotation, and tension springs 25 acting between projections 21, 24 on the tube 15 and end shield respectively return the tube to its angular rest position when no motor torque is developed, said projections 21, 24 also limiting the stator angular movement. In modifications leaf springs may replace the helical springs 25, or such springs may be dispensed with entirely; electromagnetically acting members may replace the springs 10; the rotor ball bearing 26 which takes the brake axial pressure may be axially adjustable to vary the distance between the brake linings 11, 12; the stator may be axially stationary by disposing the components 18 ... 25 at the left-hand end of the rotor and providing plane annular surfaces at the righthand end thereof; or components 18 ... 25 may be replaced by studs projecting radially from the tube 15 and engaging helical recesses in the motor housing or in the stationary brake part. The motor may be an A.C. or a D.C. motor. The wheel 13 may have spokes (not shown) forming an impeller of cooling air through openings 27 ... 30, such air passing through the clearance between the tube 15 and housing 1 and being directed to the brake linings 11, 12 by plates 31.
Patent GB-703709-A (GB)
Title: Improvements relating to reefing gear for ships' sails
IPC: B63H9/10
Filed: 1951-04-02
Abstract: 703,709. Sails. FAIREY AVIATION CO., Ltd., and JAMES, C. G. April 2, 1952 [April 2, 1951], No. 7539/51. Class 115 In reefing gear of the type in which reefing is effected by paying out the halyard A which supports the head of the sail B, at the same time rotating the boom G to wind the sail round it, the end of the halyard is bound on a reel F connected to the boom so as to be unwound from it as the sail is bound on to the boom, an intermediate part of the halyard being taken round a floating pulley E acted on by resilient means, e.g. rubber tension springs H, to take up slack and maintain a suitable tension in the halyard. The halyard may be controlled by a winch D on the mast C having a number of turns of the halyard passed round it, or the floating pulley E or the reel F may be in the form of a winch. The winch may be remotely controlled through flexible shafts.
Patent GB-557820-A (GB)
Title: Improved method and apparatus for making pile fabrics
IPC: D04H11/00
Filed: 1942-06-03
Abstract: 557,820. Pile fabrics. BEHR-MANNING CORPORATION. June 3. 1842, No. 7565. Conventian date, June 4, 1941. [Class 140] A layer of pile forming material, such as flock. is weakly secured by adhesive to an advancing transfer sheet or surface, and the layer is transferred to an advancing backing sheet having a coat of stronger adhesive on its surface by bringing the coating into contact with the layer. Loose flock material 10 is delivered to a feed belt 15 passing through an electrostatic field of some 40,000 volts between electrodes 17, 18. A tranfer apron 22 coated with weak adhesive by a roller 26 passes over the upper earthed electrode and receives oriented flock particles, those not adequately secured being removed by a suction conduit 32 opposite a beater 31. The apron passes over a convex platform 35 in contact with a sheet of backing material 40 coated with a stronger adhesive spread by a doctor blade 44. The backing material is pressed against the oriented particles by an endless band 46, adjustable rollers determining the pressure and ensuring that the sheets 22, 40 shall approach each other in the course of their travel over the platform. A large transfer drum may be substituted for the apron 22. Suitable adhesives are described comprising glycerine and rubber latex respectively.
Patent GB-591844-A (GB)
Title: An improved tyre-spreading device
IPC: B60C25/14
Filed: 1945-03-27
Abstract: 591,844. Tyre-spreaders. WOODHOUSE & MITCHELL, Ltd., STURN, E., and EMMETT, A. March 27, 1945, No. 7651. [Class 144 (i)] A tyre-spreader comprises a pair of levers a, b pivoted together at c, the shorter ends of the arms being shaped to engage inside the tyre beads, one lever carrying a rack a<1> for engagement by a spring-pressed pin d for holding the tool in its operative position. A finger grip d<2> is provided for withdrawing the pin.
Patent GB-880057-A (GB)
Title: All directional industrial truck
IPC: B62D7/02
Filed: 1960-03-04
Abstract: 880,057. Industrial trucks. YALE & TOWNE MANUFACTURING CO. March 4, 1960 [July 23, 1959], No. 7700/60. Classes 79(3) and 79(5). An industrial truck comprises two steering and traction units, common steering means and movable control means for controlling the common steering means to determine and change the steering motion to be contributed by the steering means. In the embodiment shown in Figs. 1 and 2 an industrial truck comprises a so-called U-frame 10 having a battery compartment at the base and limbs with castor wheels 18 at their ends and with a fork-lift mechanism between them. Pivoted to this by a longitudinal shaft 25 in a tube 24 is a traction supporting frame 23. Mounted on this are two steering and traction units 29, 30 each comprising a vertical electric motor, contractors or other control means and gearing to a traction wheel 33 and having an arrow marked on the top to show in which direction the wheel will move. Levers 37, 38 on the battery compartment 22 control the motor speeds independently, backward or forward movement of the lever giving reverse or forward motion. The units 29, 30 are steered by shafts 43, 47 (Fig. 6) to which they are connected by chains 40 and 45 respectively. Attached to shaft 43 is a steering wheel 44 below which is a casing 50 containing portions of shafts 43, 47 on which are fixed gears 55, 56. As shown in Fig. 6 these gears may mesh with three gears 57, 58, 59 on a plate 62. This plate is connected to a control rod 66 which is yieldingly held in one of three positions by a spring-loaded detent ball engaging in one of three scallops in the rod and is moved by a lever 68 pivoted at 70 and having a knob 69. In the upper position of rod 66 gear 57 meshes with gears 55 and 56 rotating both shafts in the same sense when the steering wheel 44 is rotated. In the lower position gears 58 and 59 mesh together and with gears 55, 56 to rotate the shafts in opposite senses. In order that the wheels may rotate in the same direction in this position a reversing switch lever 67R may be fitted to rod 66 to reverse the drive of one motor. This may however be done manually using lever 37 or 38. When the rod 66 is in its mid position all gears 55, 56, 57, 58, 59 are in mesh so that the steering wheel is immovable and steering must be done by controlling the motor speeds by levers 37, 38. Fig. 10 (not shown) shows the manner in which such a truck may be manoeuvred in the different positions of lever 68.
Patent GB-783063-A (GB)
Title: Improvements in or relating to petrol-injection internal-combustion engines
IPC: F02M69/02
Filed: 1956-03-13
Abstract: 783,063. Fuel supply systems. REGIE NATIONALE DES USINES RENAULT. March 13, 1956 [May 2, 1955], No. 7891/56. Class 7(3) [Also in Group XXVIII] An accelerating pump 19 delivers fuel into the supply pipe 11 between a feed pump 12 and an injection pump 10 when the accelerator pedal is depressed rapidly. The feed pump 12 is a bellows pump operated on its suction stroke by eccentric 16 and on its forcing stroke by a spring 17, and the injection pump 10 feeds injectors 3 in the intake pipes and is controlled by intake manifold suction. The accelerator pump 19 is operated from the accelerator pedal 8 through a resilient connection 23.