baber/WOPTO huggingface dataset:
Patent GB-1127570-A (GB)
Title: Improvements in or relating to sweepers
IPC: A47L11/32
Filed: 1967-06-12
Abstract: 1,127,570. Floor sweepers. OKAMURA MFG. CO. Ltd. 12 June, 1967 [24 June, 1966], No. 26948/67. Heading A4F. A floor sweeper capable of sweeping up when being moved in either a forward or backward direction is similar to that described in Specification No. 1,100,695 but includes an additional brush 9. The small brush 10 sweeps dust towards the main brush 9, each end of the axles 24, 29 of the brushes being secured to ratchet wheel of a one-way driving clutch to ensure that a sweeping up rotation of the brushes takes place on forward or backward movement of the sweeper. The sweeping pressure of the brushes 9, 10 on a floor may be increased or decreased by tilting the sweeper so that either a castor 7 or a castor 6 rolls on the floor.
Patent GB-1457753-A (GB)
Title: Casting reels
IPC: A01K89/0155
Filed: 1973-06-07
Abstract: 1457753 Casting reels D COOPER, 9 April 1974 [7 June 1973] 27146/73 Heading A1A A casting reel comprises means for preventing line entanglement, caused by "over-run" on casting, in the form of a centrifugal speedcontrol device comprising a disc member 30 formed by three disc portions 32, 33 and 36, the portion 33 having a plurality of circumferentially spaced recesses 34 and being sandwished between portions 32 and 36. Recesses 34 house pivotally mounted speed control fingers 50 moveable under centrifugal force from a fully retracted position to a deployed position in which their tips lightly brush or are just clear of an inner surface 63 of a cylindrical housing 60. The member 30 is mounted on the side of a line spool 17 for rotation therewith. An intermediate disc 41 having a flange 42 with flutes 43 in its outer surface engageable by a spring (not shown) forms a drag known per-se. The housing 60 is attached to or formed integrally with a non-rotatable side plate 61. - The fingers 50 are oriented so that air resistance tends to move them away from the surface 63 when casting line to achieve the desired resistance so preventing "over-run".
Patent GB-244568-A (GB)
Title: Improvements in and relating to receivers for wireless telegraphy and telephony
IPC: H03D11/02
Filed: 1924-11-14
Abstract: 244,568. Seymour, C., Irving, G. A., and Drabble, J. C. W. Nov. 14, 1924. Thermionic amplifiers and detectors.-Relates to valve circuits for the reception of wireless telegraphy and telephony of the kind in which the receiving valve is adjusted to the verge of oscillation, is trigged into oscillation by the received signal, and is periodically quenched at a frequency lower than that of the signal. According to the invention, the qunching oscillations, shown as generated by a back-coupled valve V<2>, are applied through an inductive coupling L<4>, L<5> to the plate circuit of the receiving-valve V<1>. The coil L<4> can be tuned by a parallel condenser C<4> or by a series condenser, for example the condenser K shunting the telephones T. The amplitude of the quenching oscillations applied to the plate circuit may be varied by adjusting the coupling L<4>, L<5> or by regulating the filament current of the valve V<2>. The signal-receiving. circuit, which may be a frame aerial, or a secondary circuit coupled to a receiving-aerial, comprises two coils L', L<2> separated by a block condenser C<2> and tuned by a variable condenser C<1> or by varying the inductances L<1>, L<2>. The circuit is connected between the plate and grid of the valve V<1>, and a grid leak R, and condenser C<3> are connected between grid and filament. The quenching oscillations may be of sub-audible, audible, or higher frequency, but for receiving interrupted continuous wave telegraphy the quenching frequency should be higher than that of the note received. The arrangement is designed to reduce the number of adjustments rquired.
Patent GB-461443-A (GB)
Title: Improvements relating to the tuning of radio receivers
IPC: H03J7/04
Filed: 1935-10-03
Abstract: 461,443. Wireless receiving circuits. COLE, Ltd., E. K., and BRADFIELD, G. Oct. 3, 1935, No. 27251. [Class 40 (v)] The tuned circuits of an error detector system in a superheterodyne receiver having automatic tuning are energized from the screengrid circuit of an intermediate frequency amplifier, whereby drifting of the natural frequency of the two circuits is compensated. The error detector comprises two tuned circuits X, Y tuned 5kc above and below the true I.F. and feeding diodes V3, the load resistances R1 R2 being arranged so that the grid bias of the tuning valve V4 varies in accordance with departure from exact tune. V4 is associated with the frequency determining circuit of the local oscillator portion of the mixing valve V1. The circuits X, Y are energized from a coil P in the screen gridcathode circuit of the I.F. amplifier V2, and thus cause reduction in amplification in its plate circuit at their respective resonant frequencies ; they thus control the selectivity to some degree and drift in their natural frequencies will cause corresponding drift in the true I.F. so that the receiver is still accurately tuned. In a modification, the automatic tuning valve V4 is constituted by a thermionic reactance.
Patent GB-319355-A (GB)
Title: Clutch mechanism
IPC: B25B23/14
Filed: 1929-09-06
Abstract: 319,355. Chicago Pneumatic Tool Co., (Assignees of Callan, W. H.). Sept. 21, 1928, [Convention date]. Bolts, nuts, and screws, screwing-up.-In portable or stationary machines for driving screws, nuts, &c., a claw-clutch member 17, rotatably connected by balls 18 to the hollow tool-shaft 10, is engageable by axial pressure against a spring 23 with a complementary member 13 secured to a motor-driven spindle D, and has on its under face shallow bevelled teeth of irregular size and spacing, engaging like teeth 20<a>, Fig. 3, on a member 20, which is slidably keyed by one or more rows of balls 21 to the shaft 10 and is pressed by an adjustable spring 24. The members 17, 20 form an overload-release clutch designed to prevent frequent reengagement during slip, engagement occurring preferably, at one point only in a rotation. The tooth-sides may radiate from a point eccentric to the axis or be tangential to a small circle. Socket.-The tool (not shown) is retained in the polygonal socket 11 by a ball and slide device 12.
Patent GB-1311747-A (GB)
Title: Missile
IPC: F02K9/00
Filed: 1970-06-05
Abstract: 1311747 Missiles BOFORS AB 5 June 1970 [6 June 1969] 27377/70 Heading F3A A missile comprises solid fuel charges 2 and 3 whose common centre of gravity substantially coincides with the total centre of gravity of the missile and the combustion gases from which pass to a plurality of nozzles 7 which are mounted in an annular member 5, stabilizing wings 6 being alternately attached to the annular member 5 between adjacent nozzles. The wings can be folded alongside the missile. Both the wings and nozzles are mounted in a plurality of individual recesses 8 or in a common annular recess. The wings are preferably mounted close to the total centre of gravity and the resultant of the thrust from the nozzles coincides with the axis of symmetry of the missile and is directed through the total centre of gravity.
Patent GB-812150-A (GB)
Title: Improved process for the treatment of tough cast iron
Filed: 1955-09-26
Abstract: Cast iron is obtained by a modification of the process claimed in the parent Specification in which the quenching in the first phase is either a step-quench into oil at 90-110 DEG C. or a direct quench into cold oil.  A further modification consists in reducing the time for nucleation treatment to five minutes to three hours when the castings are of thin section or include alloying elements which favour martensitic quenching or graphite uncleation, e.g. Ni (0.4 per cent-2.0 per cent), or Mn (up to 1.3 per cent) for martensitic quenching and Al (0.1 per cent) for graphite nucleation.
Patent GB-925119-A (GB)
Title: Improvements in or relating to the recovery of fluorine as hydrofluoric acid from the waste products of electrolytic aluminium production
IPC: C01B7/19
Filed: 1961-07-28
Abstract: Hydrofluoric acid is recovered by subjecting solid residues obtained in the production of aluminium by electrolysis of alumina in molten cryolite to a mixture of steam and a gas inert to HF, e.g. air, O2 or N2, at 600 DEG -1100 DEG C.  Solid residues may be cathodic residues, cell scrapings, or dust from the effuent cell gases with or without prior combustion or with simultaneous combustion of the gases.  The residue is heated to 600 DEG C. in an air current when steam is added to the air in an amount 25-75%. The proportion of steam should be less than 60 kg/kg fluorine. The residue is further heated and kept at 1000 DEG C. in contact with the steam/air mixture for 1 hour.  At least part of the heat may be provided by combustion of carbon in the residues, and solid or liquid carbon-containing material, e.g. hydrocarbon fuel oil, may be added to the residue to be treated.  A mixture of residues may be used in which the average carbon content is sufficient to provide all the heat.
Patent GB-318922-A (GB)
Title: Improved means for the elimination of ripples in electron valve sets
IPC: H04B15/00
Filed: 1929-09-10
Abstract: 318,922. Telefonaktiebolaget L. M. Ericsson. Sept. 12, 1928, [Convention date]. Thermionic amplifiers. - In a resistancecoupled amplifier arranged to eliminate the effects of disturbing ripples from d.c. mains supplying the anode and/or grid and filament potentials, one of the electrodes is supplied with ripple potentials substantially independent of the corresponding continuous potential and of appropriate amplitude and phase to effect the desired elimination in the output circuit. Thus in a twovalve amplifier, the anodes may be supplied from a resistance M, O, Fig. 1, connected across the mains B, compensation being effected by connecting the grid return lead of the first valve to an appropriate point P on the resistance M, O. In an amplifier in which grid and filament potentials are also derived from the mains, the resistance M, A, Fig. 2, filaments F1, F2, resistances rand O, N are connected in series across the mains. Grid bias for the first valve is taken from resistance r through a resistance R, and the compensating ripple is applied to the same grid from a tapping P on M. A through a condenser K whose impedance is low compared with R. Two three-valve circuits are described (Figs. 3 and 4, not shown) in the first of which two tappings are taken from the mains resistance, and the ripple therefrom applied through condensers to ends of the anode resistance of the first valve, one of these condensers being stated to increase the rectifying properties of the valve and bye-pass high frequencies across the anode resistance. The second circuit dispenses with the mains resistance and the two compensating voltages are derived from a variable resistance in conjunction with a resistance in the feed circuit of the first valve. Phase-adjusting impedances may be used to correct the phase of the compensating potentials. Specifications 240,851, 261,110 and 309,902 are referred to.
Patent GB-1482184-A (GB)
Title: Covered containers
IPC: B65D8/06
Filed: 1974-06-21
Abstract: 1482184 Drinking vessels OWENS-ILLINOIS Inc 21 June 1974 [21 June 1973] 27582/74 Heading A4A [Also in Divisions B2 B5 and B8] A container 10, e.g. bottle, jar or tumbler, is provided with at least two external plastics covering layers 23a and 25 in at least partial over-lying relationship with one another, the layer 23a being constituted by an in situ formed coating and the layer 25 being constituted by a preformed shrunk-on sleeve In one embodiment, powdered plastics is sprayed on to the neck portion 13 of a rotating heated glass bottle to form the layer 23a, Fig. 1 (not shown). The powdered plastics may be a thermoplastic, such as polyvinyl chloride, polyethylene, polystyrene, ethyl vinyl acetate, polyurethane, polyamide or copolymers of carboxylic acid with ethylene. The layer 23a may also be formed of thermosetting plastics, and may be sprayed-on in liquid form. A seamed or seamless sleeve of foamed or non foamed thermoplastic, which is preprinted or otherwise decorated to provide a label, is then telescoped over the bottle after the latter has again been heated, Figs. 2 and 3 (not shown), and heat-shrunk in a tunnel (28), Fig. 4 (not shown), into overlapping engagement with the coating 23a and beneath the base rim 8 of the bottle. In another embodiment, Figs. 6-9 (not shown), a sprayed-on coating 34a is also applied over the bottom portion of the bottle. In a further embodiment, Figs. 10-12 (not shown), substantially the entire external surface of the bottle is provided with a plastics coating 43a prior to application of the sleeve, by conveying the heated bottle through a fluidizing chamber 35. Electrostatic assistance may be used to aid formation of the coating. In the embodiment of Figs. 13-15 (not shown), the sleeve is shrunk on to the bottle first and then a sprayed-on coating 45a applied over the whole of the sleeve and the remaining exposed bottle surface or over the marginal portions of the sleeve and the remaining exposed bottle surface. In a modification of the above described embodiment, the coating is applied by conveying the sleeved bottle through a fluidizing chamber 38. The coating may be transparent or translucent to permit viewing of the label and/or the bottle contents. Instead of heat-shrinking the sleeve on to the container, the sleeve may be caused to contract on to the container by chemical action or solvent evaporation. Instead of a bottle, jar or tumbler, the container may be in the form of a metal can, or a spirally-wound paper container having metal ends.
Patent GB-273948-A (GB)
Title: Improvements in bobbin-bins and their shelves
IPC: B65H49/38
Filed: 1926-11-03
Abstract: 273,948. Schlesinger, G. Nov. 3, 1026. Yarns, skips and receptacles for.-Bins for the storage of bobbins, cops, and spool tubes, and for placing in steam chests comprise for walls and a bottom of galvanized wire netting, or other perforated non-hygroscopic material not affected by steam, framed with galvanized angle irons, the top and bottom angle iron being so disposed that the bottom angle iron of one bin fits into the top angle iron of the bin below as shown, Fig. 5. Vertical tubes or rods d, Fig. 8, may be united by angle irons e arranged in pairs serving as shelves to accommodate the bins. Loose bolts may be used with the vertical tubes to support the angle irons e, the distance apart of the shelves being thus made variable. The bins may be made large enough to hold one half or the whole output of a sell-acting doffer, and half and quarter size bins may be made to accommodate smaller lots.
Patent GB-357364-A (GB)
Title: Anti-skid device for motor cars
IPC: B60B39/00
Filed: 1930-09-16
Abstract: 357,364. Preventing skidding of vehicles. TURK, H. W. and TURK, J., 14, Marine Parade, Sheerness, Kent. Sept. 16, 1930, No. 27623. [Class 108 (ii).] On each side of a vehicle and adjacent to the rear wheels is arranged a flat metal plate with a roughened under surface and an upward flange at one side, each plate being suspended by flexible wires A<1> which are led over pulleys to a controlling member F within reach of the driver. When skidding occurs the plates are released by the driver and rest flat on the ground; the skidding wheel slides up the thin edge on to the plate and is prevented from moving further by the flange.
Patent GB-290504-A (GB)
Title: An improved baby-jumper or child's exercising, rocking or see-saw apparatus
IPC: A63G11/00
Filed: 1927-10-18
Abstract: 290,504. Carr, C. V. Oct. 18, 1927. Baby-jumpers; see-saws and the like.-Relates to collapsable baby-jumpers, see-saws and the like. A seat 19, formed of flexible material and provided with a loop 21 by which it can be secured, adjustably as by a buckle, to a tray 18 to form loops for the child's legs, is carried by a framework 2 pivotally mounted on an upright member 3, a spring 10 resisting downward movement of the seat. Holes 20, 28 enable the position of the spring to be adjusted. The member 3 is removably secured to a base 1 by a bolt passing obliquely through a fixed member 6, a slot 12 in the member 3, and a movable member 7, and tightened by a wing-nut 8. Screw-eyes engaging screws 13, 14 form the pivots of the frame 2.
Patent GB-1086797-A (GB)
Title: Inner spring mattress or cushion
IPC: A47C27/07
Filed: 1966-06-21
Abstract: 1,086,797. Mattresses &c. UNITED ELASTIC CORPORATION. June 21, 1966 [June 30, 1965], No. 27697/66. Heading A4M. A mattress or cushion (Fig. 2) comprises a plurality of coil springs (2, 4) supported at their bottom ends on metal strips (1), metal connectors (3) which interconnect adjacent springs (2, 4) at or near their mid-height, and a stretchable fabric cover (7) overlying but not attached to the upper ends of the springs (2, 4).
Patent GB-468167-A (GB)
Title: Improvements in pouring devices for salt and other like containers
IPC: A47G19/24
Filed: 1936-10-13
Abstract: 468,167. Powder and liquid dispensers. PARKES, T. H. Oct. 13, 1936, No. 27770. [Classes 18 and 125 (iii)] The pouring aperture 3 of a powder or liquid dispenser can be closed by a valve 7, which can be rotated by an external knob 5. The valve is made of non-corrosive material and has a cut-away portion 9 which, when it lies opposite the aperture 3, allows the contents of the dispenser to be poured out. A mark 10 on the knob 5 indicates when the valve is "open" and a stop 11 limits the movement of the valve. If there is more than one pouring aperture, the valve has a corresponding number of cut-away portions, the cap 1 housing the valve, &c. is screwed to the container or held on by spring fingers. Specifications 448,921 and 453,629 are referred to.
Patent GB-205989-A (GB)
Title: Improvements in massaging appliances
IPC: A61H15/00
Filed: 1922-10-13
Abstract: 205,989. Saville, E. K. Oct. 13, 1922. Massage. - A massage appliance consists of a rubber or other ball 1 mounted in a cradle or cup 2 which is so formed that the ball can be forced out by hand, the rubber ball 1 being supported on a steel ball 5. The cradle 2 consists of a ring 2<1> carried by arms 2<x> radiating from a boss 2<11>. The boss 2" has holes 6, 7 at right-angles, into either of which may be screwed a rod 4, which preferablv screws into a handle 3. The cradle may be replaced by a metal cup having an opening to enable the ball to be sprung out of the cup. According to the Provisional Specification, the rubber ball may have a hole through its centre through which a spindle attached to the holder passes. The holder may consist of a loop of stout wire bent into a triangle and secured to a handle.
Patent GB-725644-A (GB)
Title: Improvements in or relating to thermal integrators
IPC: G05D3/14
Filed: 1953-10-09
Abstract: 725,644. Electric transformers. SPERRY CORPORATION. Oct. 9, 1953 [Oct. 21, 1952], No. 27816/53. Class 38 (2). [Also in Groups XIII and XXXIX] A phase sensitive device for integrating a voltage signal e (in) over a short time, comprises a fixed spacer bar 16 carrying bimetal elements 26, 28 which deflect a bar 34 in accordance with the thermal energy produced under the control of the voltage. The displacement of the bar controls the output of a differential transformer. The opposed bi-metal elements 26, 28 each comprise two reverse welded sections which form an S- shape when heated. The windings 38, 40 are identical so that with equal D.C. or A.C. reference voltages, e1 and e2, of opposite polarity or of opposite phase the bar 34 is not displaced and the common point 42 e1 and e2 of the two heater circuits remains at zero potential. When the D.C. or A.C. voltage e (in) to be integrated is connected at 42, one coil 38 or 40 is heated more than the other and the bar 34 is deflected. The transformer comprises a composite threelimbed core with a small gap 68 in the central core 52. The primary winding on the central limb is connected to a source of A.C. and the secondary windings 58, 60 are connected in opposition so as normally to give zero output. A low-resistance short-circuited copper turn 72 carried by the bar 34 embraces a jumper bar 65 of the core and carries strips of iron 76 within the gap 68. Displacement of the copper turn diverts more of the flux through one or the other of the secondary coils to give an output signal e (out). The device is carried by an angle bracket 14 secured to a base 10.
Patent GB-977247-A (GB)
Title: Improvements in vehicle brake systems
Inventor: LARSSON INGMAR VALENTIN
IPC: B61H13/32
Filed: 1963-07-13
Abstract: 977,247. Brakes. SVENSKA A.B. BROMEREGULATOR. July 13, 1963, No. 27860/63. Heading F2E. In a vehicle braking system including amechanical linkage the mechanical advantage of which can be set by operation of a fluid servo-motor controlled by a valve responsive to vehicle load, the valve is mounted in a housing secured to the vehicle and is operated by a push-rod adapted to be moved when the vehicle is loaded, the push-rod acting on a valve element of the valve via a damper arranged in series and coaxially with both the valve element and the push-rod. As shown, the housing 23 is secured to a sprung part 26 of the vehicle and comprises a lower part 36 in which a push-rod 30 is slidable, and an abutment 29 is secured to an unsprung part 27 of the vehicle for engagement with the push-rod to move it upwardly when the vehicle is loaded. The valve when operated is arranged to communicate vacuum from a pipe 22 to a pipe 21 leading to a servomotor which when operated unlocks a linkrod 14 normally effective between two levers 7, 9, of which lever 9 is pivoted at a fixed point 10 and lever 7 is floating, to determine the mechanical advantage exerted by this linkage on the force transmitted from a vacuum brake cylinder 1 to rods 8, 12 connected to the vehicles brakes, a second link-rod 15 which is normally ineffective owing to lost motion then becoming effective in place of the link-rod 14 to increase the mechanical advantage of the linkage. The servo-motor comprises a housing 18 secured to the lever 9 in which is slidable an extension of the rod 14 provided with a pair of flanges. A locking lever 16 pivoted at 17 in the housing 18 is normally engaged between the flanges by a spring 24. When vacuum exists in the pipe 21 this acts in an upper chamber within the housing causing upward movement of a diaphragm 20 which comprises the spring 24 and raises the locking lever to free the rod 14 for limited movement as permitted by a lost-motion connection with the lever 9. The valve comprises a valve element 41 having a spider 39 arranged for contact by a cylinder 34 at the upper end of a part 32 of the push-rod which telescopes within a tubular part 31. The cylinder 34 is filled with damping fluid and contains a piston 38. When the push-rod is operated the parts 31, 32 move together unless a spring 33 is compressed, causing damped movement of cylinder 34 to be communicated via the spider to the valve element to lift a valve plate 45 whereby vacuum is communicated from pipe 22 to pipe 21. Specification 795,769 is referred to.
Patent GB-243160-A (GB)
Title: Improvements in or relating to sanding apparatus for vehicles
IPC: B61C15/10
Filed: 1924-11-21
Abstract: 243,160. Cleaver, C. F., and Four Wheel Drive Lorry Co., Ltd. Nov. 21, 1924. Sand &c., distributing on wheel tracks.-Sanding apparatus for vehicles comprises a sand-box 1 having a delivery outlet controlled by a valve 4 which is adapted to move to the open position against the compression of a pair of springs 10, 12, of which the former is the first to function. The valve 4 is pressed against its seating by bearers 5 through the medium of springs 6, pins 15 being provided to prevent longitudinal movement of the bearers when the valve is operated.