baber/WOPTO huggingface dataset:
Patent GB-1061308-A (GB)
IPC: A63H33/10
Filed: 1966-01-26
Abstract: 1,061,308. Building elements. MUPI S.a.r.1. Jan 26, 1966 [Jan. 30, 1965; Feb. 5, 1965], No. 3516/66. Heading A6S. An instructive toy simulating scaffolding comprises tubular members 1, clamping joints 16, 31, and members engaged in the ends of the tubular members forming feet 2 or rollers 9, Fig. 5 (not shown), and moveable or rigid joints, 12b and 51a, Fig. 2 (not shown), respectively. Members 41, Fig. 4 (not shown), are also described for holding planking.
Patent GB-100179-A (GB)
Title: Improvements in and relating to the Distributing Means in Dry Gas Meters.
Inventor: VISSER AART PIETER
IPC: G01F3/22
Filed: 1916-03-09
Abstract: 100,179. Visser, A. P. March 12, 1915, [Convention date]. Multiple-way valves; actuating mechanism. -In a dry gas-meter t h e distributing - valves, which may be loose-ball valves, or lift valves comprising bodies provided with guided tails, are operated directly by eccentric disks, obliquely-set plates, cam-plates &c., preferably mounted on a common shaft. In the form shown in Fig. 6, ball valves 10, 11 are operated by an eccentric disk 12 and obliquely-set plate 13. In a modification, Fig. 11, the ball valves 10 may be moved by eccentrics on shafts 15, 16.
Patent GB-158828-A (GB)
Title: Improved method of regulating internal-combustion engines
IPC: F02M67/00
Filed: 1921-01-29
Abstract: 158,828. Daimler-Motoren-Ges. Jan. 29, 1920, [Convention date]. Regulating.-In an engine in which self-ignition is effected by the heat of compression produced by the working piston only, and in which combustible mixture is supplied to the engine cylinder by a compressor independent of the working piston, regulation of the output is effected by varying the amount of fuel in the combustible mixture, the weight of air in the charge remaining substantially constant.
Patent GB-728410-A (GB)
Title: Improvements in or relating to fastener slider
Inventor: SIMMONS CHARLES ALOYSIUS
IPC: A44B19/28
Filed: 1953-02-09
Abstract: 728,410. Sliding clasp fastenings. SIMMONS INDUSTRIES, Inc. Feb. 9, 1953, No. 3593/53. Class 44. In a slider for joining the interlocking elements of two separate stringers and having two substantially parallel plates having inwardly turned side flanges which form guides for the inter-locking elements and a yoke interconnecting one end of each plate with the corresponding end of the other plate to maintain the ends in spaced relationship, the slider comprises a bridge, one end of which extends through a first one of the plates to attach to the other plate, a cam having an effective surface interposed between the bridge and the opposite end of the first plate for determining the spacing of the opposite ends of the plates, the cam being movable to either of two positions each of which provides a different relative spacing between the opposite ends of the plates, one of the positions being the operable position of the slider, the other position being the released position, the cam restraining the plates in released position to limit the maximum distance between the edges of the plate flanges to a distance less than the thickness of the elements. In the arrangement shown, in which the slider comprises a body portion 10 and a pair of guide plates 12, 12<SP>1</SP> joined together at one end by a yoke 14, a leg of an L-shaped bridge member 126 projects through the upper plate 12 and is riveted to the lower plate 12<SP>1</SP>. The other leg of member 126 is provided with notches or recesses to facilitate assembly of a plate positioning member 138 and a pull tab 132. The plate positioning member which lies beneath the pull tab 132 is provided with an aperture for a finger 127 of member 126 to form a pivotal point therefor. The pull-tab is formed with an off-set portion 133, so that when the end thereof engages the other notch the tab lies over the member 138. The tab is provided with a single locking finger 134 which projects through an aperture in the upper plate 12. If during operation, the slider becomes jammed, it is freed by moving the member 138 to the position shown in Fig. 4 thus to increase the distance between the slide plates 12, 121.
Patent GB-1211776-A (GB)
Title: An arrangement for varying the feedback of an amplifier
IPC: H03F1/36
Filed: 1968-01-23
Abstract: 1,211,776. Amplifying circuits; equalized networks. TELEFONAKTIEBOLAGET L.M. ERICSSON. 23 Jan., 1968 [24 Jan., 1967], No. 3611/68. Headings H3T and H3U. A feedback network for an amplifier gives a response which increases with increasing frequency, in order, e.g. to provide correction for a line, and comprises first, second, third and fourth terminals. Between the first and second terminals is connected an impedance Z1 which increases with increasing frequency and between the third and fourth an impedance Z3 which decreases with increasing frequency. A further impedance R4 is connected between the second and third terminals and the arrangement is such that over a frequency range Z1Z3 = R4<SP>2</SP>. In use, the first and third terminals are coupled to the output terminals of the amplifier Z and the second terminal to the amplifier input, so that when an output load approximately equal to the impedance R4 is coupled to the first and fourth terminals negative feedback is provided which increases with increasing frequency and decreases with decreasing frequency over the frequency range. A further impedance R2 is connected between the second and fourth terminals and may be made equal to the impedance R4 in order to provide a constant load for the amplifier.
Patent GB-861220-A (GB)
Title: Improvements in or relating to the manufacture of composite materials
Inventor: CROWLEY GERALD PATRICK
IPC: B32B27/00
Filed: 1958-02-05
Abstract: 861,220. Laminates; coated fabrics. IMPERIAL CHEMICAL INDUSTRIES Ltd. Feb. 4, 1959 [Feb. 5, 1958], No. 3741/58. Class 140.  Composite sheet materials or articles comprise one or more layers of rubber, or thermoplastic synthetic resin, and one or more layers of a polyurethane composition as claimed in Specification 848,837. The rubber &c. layer may comprise natural rubber, polymers of butadiene, 2-chlorobutadiene or isoprene, or copolymers thereof with styrene, acrylonitrile, methacrylonitrile, butyl acrylate, methyl methacrylate, vinyl pyridine, cyanoprene, or isobutene, butyl rubber, polyvinyl chloride, polyvinylidine chloride, or copolymers such as polyvinyl chloride/acetate. The composite sheets or articles may be formed by laminating separate layers together with pressure and heat, by spread or otherwise coating the molten polyurethane composition on to the other layer or layers, by applying the polyurethane as a lacquer made by dissolving it in solvents such as acetone, methylethyl ketone, chlorinated hydrocarbon such as methylene chloride or ethylene dichloride, or tetrahydrofurane, by dipping rubber &c. articles in the molten polyurethane composition or polyurethane articles in a rubber &c. latex, or by extruding one material over the other. The rubber &c. layer or layers may be cured before or after coating or laminating, may be plied with cotton or other fabric, and may consist of foamed or cellular material. The composite materials may be moulded and may be fabricated into or used for fuel tanks, fuel hose, belting, tyres, shoe soling and printers' blankets. In Examples: (1) a hot melt or re-melt of a polyurethane made from a mixture of ethylene glycol-adipic acid-terephthalic acid polyesters reacted with 1.5 naphthylenediisocyanate, is spread with an electrically-heated doctor blade on cured and uncured tyre tread stocks containing carbon black and natural rubber, chloroprene rubber, or acrylonitrile rubber, and the coated materials subsequently cured; (2) a similar polyurethane in which the diisocyanate used is 3-methyl-4,4<SP>1</SP>-diisoeyanate diphenylmethane is sheeted and cooled, and is then hot-pressed between two sheets of polyvinyl chloride and after-cured in a hot-air oven; (3) the polyurethane of (2) is dissolved in ethylene dichloride and coated on to sheets of umplasticized p.v.c. and plasticized " leather cloth " p.v.c.; (4) a milled sheet of nitrile rubber containing compounding ingredients is subjected to heavy pressure with a polyurethane sheet as in (2) at 110‹ C.; and after-cured for 30 hours at the same temperature; the polyurethane of (2) is extruded through a die at 70-75‹ C., over a butyl rubber coated wire to form a smooth sheath of <SP>1</SP>/ 16  inch thickness. This is dusted with chalk and after standing in a warm atmosphere is cured at 110‹ C. for 30 hours.
Patent GB-1111112-A (GB)
Title: Electric fuses
IPC: H01H85/26
Filed: 1964-01-29
Abstract: 1,111,112. Fuses. F. E. LAKER. 29 April, 1965 [29 Jan., 1964], No. 3770/64. Heading H2G. A cartridge fuse is provided with two separate fuse wires so that when one melts, the fuse can be repositioned to use the other. The fuse comprises a transparent envelope 3, which may be of plastics material, closed by metal caps 1, 2. The cap 1 consists of two segments insulated from one another and connected to the cap 2 by fuse wires 4 and 5. Both caps may consist of insulated segments and more than two independent fuse wires may be included in the same envelope.
Patent GB-354688-A (GB)
Title: Improvements in apparatus for reproducing sound
IPC: H04R3/00
Filed: 1930-02-04
Abstract: 354,688. Gramophones. TAMPIER, R. J. C., 1, Rue de Bellevue, Boulogne-sur- Seine, France. Feb. 4, 1930, No. 3806. Convention date, Feb. 4, 1929. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] The radio-gramophone shown in Fig. 3 operates a group of five loud-speakers (not shown) having different characteristics and has five keys 19 which may be depressed to a variable extent to affect devices 21 which control the volume or tone of the individual speakers. When a record is played, the travel of the pick-up 11 across the record moves a pointer 14 across a chart, Fig. 5, individual to the record to indicate which key should be operated at any moment. The chart is positioned by pins and a speed indicator 27 shows through it.
Patent GB-811454-A (GB)
Title: Improvements in and relating to liquid-cooled internal combustion engines
Inventor: SWENSON WILLIAM EUGENE
IPC: F01P5/10
Filed: 1956-02-07
Abstract: 811,454. Centrifugal pumps and fans. MINNEAPOLIS-MOLINE CO. Feb. 7, 1956, No. 3836/56. Class 110 (1). [Also in Group XIII] Apparatus combining the functions of a fan, radiator, pump and flywheel for use with a liquid-cooled internal combustion engine comprises a fan rotor 10 through which engine coolant liquid circulates, said rotor being provided with a plurality of fan blades 11 each having a cham. ber 21 formed therein with an inlet 29 to the chamber disposed radially inwardly of an outlet 30 from the chamber, the rotor incorporating an annular manifold 34 connecting all the blade chamber inlets and an annular chamber 17 connecting all the blade chamber outlets. In the form shown the fan blades 11 extend between the manifold 34 and chamber 17 the latter being formed by a disc 55 and a back plate 12 incorporating a hub 13 whereby the rotor is secured to the engine shaft c. Each blade 11 is externally finned and is of the cross-section shown in Fig. 4 providing a tortuous path engine for coolant flowing therethrough. Forwardly and axially aligned with the hub 13 is a stationary assembly comprising a sleeve 36 partitioned to provide within the sleeve a separate chamber 52. Hot coolant flows from the engine through a duct 45 to chamber 52 and thence through pipes 61 to chamber 34 from which the coolant enters the fan blades through the inlets 29. The coolant cooled in blades 29 is forced by centrifugal action through outlets 30 and enters the rotating annular chamber 17 from which it is collected by stationary scoops 67 which direct the coolant through the sleeve 36, through a port 46 leading to a duct 44 (Fig. 1) and thence to the engine B. Cooling air is expelled radially outwardly, between the fan blades. The blade assembly may be cast as an integral unit.
Patent GB-524743-A (GB)
Title: Improvements in or relating to molding machines
IPC: B30B15/00
Filed: 1939-02-06
Abstract: 524,743. Rotary-mould-table machines; mechanical presses. ARMSTRONG CORK CO. Feb. 6, 1939, No. 3844. Convention date, May 27, 1938. [Class 87 (ii)] A moulding machine comprises a series of pairs of co-operating mould members 6, 7 mounted on a rotary carrier 4, one of each pair, such as the plungers 6, being loaded by fluid pressure from a common source, and the other mould members 7 being adapted to move and displace the members 6 without increasing the fluid pressure. The rotary carrier 4 is provided with a chamber 29 for pressure liquid with passages 37 extending therefrom to cylinders 22 wherein work pistons 21 carrying the plungers 6. The liquid is maintained under pressure by a piston 30 loaded with weights 31 adapted to move on guides 32, 33. The volume of liquid is maintained by a pump 40 through a valve 44, the pump being operated by a motor through a switch 46 controlled by the weights 31. The pistons 21 are arranged to have compensating up and down movements such that the total volume of the cylinders 22 is maintained substantially constant. The pistons 21 normally abut against ledges on packing glands 25, but are raised when pressure is exerted by the members 7. Plungers 8 carrying the mould members 7 are mounted to slide in the carrier 4 are and operated by toggle mechanism comprising a bell-crank 12 the free arm whereof carries a roller 18 engaging a cam surface 20. The toggle is connected to sliding blocks 10 wherein the plungers 8 are adjustably screwed. The cam is shaped to move the members 7 to apply pressure and may be further shaped to effect temporary retraction of the members 7 to allow air or gases to escape. The cam may be provided with a shroud 54 to prevent rollers leaving the cam, particularly due to adhesion between the articles and the members 7 at separation. The carrier 4 is rotated by a motor 47 through gearing 48. The motor may also serve to drive in synchronism a device 51 for making pre-forms which are fed to the moulds by a shoot 52. Alternatively, powdered or plastic material may be fed direct to the moulds. The members 6, 7 may be provided with electric heaters, current being supplied through slip rings 64, or a pair of annular heaters encircling the carrier may be provided. When internallyscrewed stoppers or other articles are moulded, they may be removed from the plungers 6 by unscrewing by means of a rubber or other friction wheel adapted to contact with the article and rotated by an electric motor.
Patent GB-621248-A (GB)
Title: Improvements in or relating to grass cutters and the like
IPC: A01D34/03
Filed: 1947-02-10
Abstract: 621,248. Mowing machines. TRACTORS (LONDON), Ltd., and MINES, F. R. Feb. 10, 1947, No. 3892. [Class 6(iii)] A motor - driven, reciprocating - blade mowing machine is characterized in that the cutter and motor are mounted to swing as a unit about an upright axis. The main supporting frame for the mower comprises a tubular member 10 and a triangular girder 11, which is journalled by brackets 24 on the member 10, the rear ends of the members 10. and 11 being pivotally supported at 7 on an axle 9 of a wheeled chassis (not shown). Journalled on the tubular member 10 is a laterally-extending bracket 26 carrying at its outer end an inclined upright shaft 27 on which is mounted a frame 28. The frame carries a motor 29 and co-operating cutter bars 30, 45. The lower bar 30 is fixed and the upper' bar 45 is driven by the motor through an eccentric 37 and bell-crank lever 39,.a a second eccentric 38 and a lever 40, carrying a weight 44, being provided to balance the drive. The whole unit may be swung around the shaft 27 into a longitudinally-extending position, a roller and detent being provided to maintain the unit in its normal operative position. By depression of a lever 14, Fig. 3, pivoted on the axle 9, the cutter may be swung about the longitudinal axis 10. The lever 14 is connected by a link 17 to a lever 18, pivoted at 19 to the beam 10. The lever 18 carries a stop 54 which, by engagement with an abutment 55 on the bracket 26, swings this bracket, and the apparatus carried thereby, about the axis of the member 10. The lever 14 is retained in the depressed position by a sliding latch 46 which engages the underside of a pin 48 on the lever, the latch being retractible by a pedal 50. Further depression of the lever 14 causes a stop 23 to engage the beam 10 and to raise it about the pivotal axis 7. A wheel 13 is carried by a member 12 integral with the bracket 26.
Patent GB-784783-A (GB)
Title: Improvements in or relating to processes for the production of selenium rectifiers
IPC: H01L21/10
Filed: 1954-02-10
Abstract: 784,783. Plate rectifiers. SIEMENSSCHUCKERTWERKE AKT.-GES. Feb. 10, 1954 [Feb. 10, 1953], No. 3964/54. Drawings to Specification. Class 37.  A selenium rectifier is produced by building up the selenium in a plurality of layers, each layer including as a first additive, a halogen to increase the conductivity of the selenium, the layer adjacent the barrier layer (and if more than two layers are involved, the next adjacent layers excepting one or more of the last layers) including a second additive which promotes the barrier formation and also acts to reduce the conductivity and the remaining layer(s) including a further additive which also acts to increase conductivity, the quantities of the addtives being selected so that the final conductivity of the layers decreases, and the quantity of the second additive increases, in the direction approaching the barrier layer. The second additive may consist of T1, Ga, In or S, and the further additive of tellurium. The first and second or first and further additives may consist of a metal-halogen compound, ironchloride being given as an example of the " first " and " further " combination.
Patent GB-232534-A (GB)
Title: Improvements in and relating to electrical valve amplifiers
IPC: H03F3/02
Filed: 1923-11-14
Abstract: 232,534. Priess, W. H. Nov. 14, 1923. Thermionic amplifiers.-Relates to filament-heating circuits for valve amplifiers using alternating supply current in which a resistance R is connected across the secondary coil of the supply transformer T, and an intermediate tap on this resistance is connected to the grid circuits; and consists in providing condensers K<2>, K<3> across the two sections of the resistance R and in connecting the tap to the grid circuits through a potentiometer H. The filaments of any desired number of valves 1, 2 for amplifying radio or audio frequency currents may be connected in parallel beyond the condensers K<2>, K<3>. Bypass condensers K<1>, K<4> may be connected across the potentiometer H and plate battery b. The Figure shows a two-valve radio-frequency amplifier followed by a detector D and telephones L. The first valve 1 has a tuned grid circuit I, K and transformer couplings A, B between the valves 1, 2 and between the valve 2 and the detector circuit. The potentiometer H may have separate sliding contacts for the several valves, so as to provide separate controls for the grid potentials and consequent damping of the grid circuits, as described in Specification 234,024. A switch may co-operate with tappings on the primary coil of the transformer T for regulating the voltage applied to the filaments; and the core or the secondary coil of this transformer may be earthed. The Specification disclaims the inventions claimed in Specifications 215,455 and 227,189.
Patent GB-431877-A (GB)
Title: Improvements relating to level indicators for lifts and other moving bodies
IPC: B66B3/02
Filed: 1934-02-07
Abstract: 431,877. Depth-indicators for lifts. EVERSHED & VIGNOLES, Ltd., and VINES, M., Acton Lane Works, Chiswick, London. Feb. 7, 1934, No. 4071. [Class 78 (ii)] [See also Group XXXVIII] Depth and position indicators for lift cages and like rising and falling bodies are formed by a suspended flexible member, which is coiled up or paid out so as to vary in length as the cage rises and falls, and a spring-balance which determines continuously and automatically the weight of either the suspended portion or that of the piled-up non-suspended portion, the weights thus obtained being used to actuate electrical recording devices. Fig. 1 shows a chain b suspended from a spring a and adapted to be received in a cup c as the cage rises. The spring carries a contact arm e moving over a resistance f whereby the voltage through the recording instrument k<1> .... k<3> is varied. These instruments are calibrated to indicate depths. In Fig. 3, the spring a is of spiral form and the arm e moves in an arc instead of a straight line. In a further modification the spring shown in Fig. 3 is arranged on the cage underneath the floor and the chain coils up on the floor of the well. Fig. 5 shows a construction in which the coiled-up part of the chain is weighed. The spiral spring is mounted in the box q at the bottom of the well and carries an arm o formed with a cup for receiving the coiled-up part of the chain. In another modification apparatus similar to Fig. 5 is mounted on top of the cage. The resistance f, may be replaced by other electrical devices capable of producing variable indications on the instruments k<1> ... k<3>, for example the moving of a core in a solenoid, the movement of a copper tube to vary the inductance of a choke coil, or the substitution of ammeters for the voltmeters k<1> ... k<3>.
Patent GB-551293-A (GB)
Title: Improvements in automatic gain control for electrical transmission systems
IPC: H04B3/10
Filed: 1942-03-28
Abstract: 551,293. Repeater systems. STANDARD TELEPHONES & CABLES, Ltd. March 28, 1942, No. 4171. Convention date, Oct. 19, 1940. [Class 40 (iv)] In a system particularly for carrier transmission. in which a pilot current is employed to control the gain of the amplifiers along a line, a change of signal level tends to produce transient irregularities since a correction is applied at a number of amplifiers more or less simultaneously. To reduce this effect, the line is divided into sections by means of filters such as 12 which block the passage of pilot current, and a new pilot current is applied beyond each blocking filter, the strength being dependent on the integrated variations of the pilot current arriving from the preceding section. In Fig. 1, the outgoing pilot current is applied from a source 13 through a resistance element 15 which has a negative temperature coefficient, e.g. silver sulphide, and which is controlled by a heating coil 16. The incoming pilot current passes through a filter 18, amplifier 19, rectifier 20 to a direct current amplifier 21 the output of which supplies current to the heating coil 16. In the modification in Fig. 2, the outgoing pilot current is derived from the incoming pilot current by taking a part of the output of the amplifier 19 to an overloaded amplifier 31 which supplies current of substantially constant amplitude through a transformer 33. The pilot current controls the feedback path of the amplifiers for example in the manner described in U.S.A. Specification 2,179,915.