baber/WOPTO huggingface dataset:
Patent GB-695229-A (GB)
Title: Receiver for voice frequency telegraph systems
Inventor: ZOEST WILLEM HUGO VAN
IPC: H04L27/06
Filed: 1951-02-07
Abstract: 695,229. Receivers for alternating current telegraphy. STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. Feb. 7, 1951 [Feb. 9, 1950], No. 3050/51. Class 40 (iii). A receiver for audio-frequency carrier-wave telegraphy comprises an A.C. amplifier whose output is applied to a rectifying detector connected across the terminals of a potentiometer, a capacitor connected to one terminal of the potentiometer and through a rectifier to a variable point on the potentiometer, the arrangement being such that the capacitor acquires a voltage equal to half that applied to the potentiometer and resulting from the rectified A.C, signal, and that the voltage on the capacitor is maintained during signal interruptions of the A.C. actuation. The spacing signals (tone) are amplified by the valve VI and passed via winding 2 of a transformer TR4 to a rectifier G2 connected by ripple-eliminating filter C7, L4, C8 to produce a voltage VI across the potentiometer R16. A condenser C9 is connected via a rectifier G3 to a variable tapping point on the potentiometer R16 so that it acquires a charge equal to half that applied to the potentiometer. This charge is held during normal signalling breaks in the tone transmission so that, for example, - 6 v. across EF during A.C. signals becomes - 3 v. at PQ and U2 at PQ during the cessation of A.C. remains at +3 v. During A.C. signals V2 is cut-off and V3 conducts and a current +i3 (say 10 mA.) flows to the receiving relay OR. During signal breaks V2 conducts and V3 becomes non-conducting so that a negative i3 passes from battery over resistances R18, R13 to the relay OR. The voltage during A.C. signals is also applied over the winding 3 of the transformer TR4 to a rectifying portion G4 of the valve V4 and, in reverse sense, is applied to cut off the valve so that the current i4 is zero. During substantial breaks in the A.C. signals, the voltage U2 becomes zero, the valve V4 conducts and the flow of current (i4) simulates the effect of a positive voltage on the grid of the valve V2 so that a negative i3 flows to the receiver relay OR. Multi-channel arrangement. In the multichannel system, Fig. 10 (not shown), incorporating 24 channels at 120 cycles spacing from 420 to 3180 cycles, the transmitter comprises two sets of twelve transmitters using frequencies ranging from 1860 to 3180 cycles, the lower or second set being modulated with a frequency of 3600 cycles to produce the channel frequencies of 420 to 1740. At the receiving end, after channel selection, the input is again modulated with the frequency of 3600 cycles so that the A.C. receiver channels, similar to that shown in Fig. 5, receive signals at 1860 to 3180 cycles per second. An advantage of the arrangement is that the distortion arising from the rectifier arrangement G2 in the circuit of Fig. 5 in response to the signals of the lower frequencies is to a great extent avoided.
Patent GB-404811-A (GB)
Title: Improvements in or relating to means for detachably fixing straps on looped members,such as wrist watches and the like
IPC: A44C5/16
Filed: 1933-02-01
Abstract: 404,811. Attaching watches to wrist; fastenings. BUTLER & HEATH, Ltd., and GRANT, J., School Street, Walsall. Feb. 1, 1933, No. 3071. [Class 43.] In attaching a wrist strap to a watch wherein the strap is passed through a watch-loop A, folded back and secured by a snap fastener the parts whereof are interleaved in strap layers 1, 2, the male fastener element is formed by bending a metal strip from each end back upon itself into an inverted T-shape to form a base 5 and two upstanding arms 6 curved to produce a split bar-like head 7. The arms 6 and head 7 may be narrower than the base 5. The outer layer 1 of the strap is extended for passing through the loop A and carries a socket plate 3 attached thereto by a leather layer 4 which may be reinforced by linen or other textile material. The plate 3 has a raised portion 9 with an oblong hole 8 adapted to receive the head 7 which is then accommodated inside the strap layer 1. Slits may be provided in the layer 1 to facilitate bulging out to receive the head 7.
Patent GB-693315-A (GB)
Title: Improvements in means for supplying heated air to incubators and like chambers
IPC: A01K41/00
Filed: 1951-02-09
Abstract: 693,315. Heating air. SHAW, C. E. Jan. 16, 1952 [Feb. 9, 1951 ], No. 3215/51. Class 64 (iii) An oil or gas heated hot-water boiler a, supplying a radiator in an incubator, greenhouse or the like and having a central flue a with a thermostatically controlled damper e, is surrounded by a double-walled jacket g spaced from the boiler and heating a current of air delivered to the incubator by a powerdriven fan associated with the radiator. The boiler a and jacket g are surrounded by an insulating casing n which extends below the bottom of the boiler, and has apertures s above the jacket. When the damper e restricts the flow of hot gases through the centre flue d, they flow through the annular flue j.
Patent GB-1292044-A (GB)
Title: Improvements in honeycomb-cored structural bodies
Inventor: GARDNER NORMAN WRIGHT
IPC: B21D47/00
Filed: 1969-01-21
Abstract: 1292044 Making aircraft BRITISH AIRCRAFT CORP Ltd 20 Jan 1970 [21 Jan 1969] 3372/69 Heading B3A [Also in Division B7] A structural body with a honeycomb-core is made by enclosing the core, with an expansible plastics material, in a mould, expanding the plastics material and then depositing a metal casting on the body using a liquid carrier. A missile fin may be made with a honeycombcore of stainless-steel, a filling of expansible polystyrene and a coating of nickel, applied by electrodeposition, spraying, painting or chemical deposition. The body is sprayed with silver nitrate before cooling by electrodeposition. The areas coated can be selected and the thickness of coating controlled.
Patent GB-233066-A (GB)
Title: Improvements in shock absorbing devices for the driving mechanism of motor-cycles and the like
IPC: F16D3/76
Filed: 1924-02-09
Abstract: 233,066. Jardine, Sir E., and Cohen, I. Feb. 9, 1924. Securing together machine elements for the transmission of rotary motion; clutches, friction. -In motor-cycles and the like, a sprocket wheel ring B, preferably that on the main shaft of the variable-speed gear, is connected to its hub A by an indiarubber ring D notched to engage corresponding projections B<1>, A<1> on the ring and hub. The parts are supported by side plates G, G<1> secured together by rivets H, engaging between projections A, and rivets J engaging with lost motion the ring B, from which they are radially spaced. This arrangement permits relative rotary and radial displacement of the parts A, B and provides driving-means if the ring D should fail. The hub A is shown connected to the shaft L by a plate clutch in which plates N sliding on a sleeve 0 on the shaft L engage cork inserts in plates M in a drum K integral with the side plate G.
Patent GB-1449780-A (GB)
Title: Solenoid valve
IPC: F16K31/06
Filed: 1975-01-27
Abstract: 1449780 Valves SOCIETA ITALIANA TECNOMECCANICA "LA PRECISA" DI DR P EG DE STEFANI SAS 27 Jan 1975 [29 Jan 1974] 3414/75 Heading F2V An obturator 4 is connected to the armature 3 of a solenoid 1 by a mechanism which causes the obturator at first to lift more slowly than the armature and then to move more quickly than the armature. The armature first pivots a lever 211 about a fulcrum 213 and then a pair of levers 211, 311 in contact with each other about a second fulcrum 214, the levers being pivotally connected at 311a. In another embodiment a single lever (111, Fig. 4) pivots about a fulcrum (113) until its displaced end strikes a second fulcrum (114) about which further movement takes place. In a third embodiment, the armature and obturator are at opposite ends of the lever (11, Fig. 1) and a pair of fulcra (13, 14) are arranged for successive engagement by the lever as the obturator is lifted.
Patent GB-545234-A (GB)
Title: Wrapper for foodstuffs
IPC: B65D65/40
Filed: 1941-03-13
Abstract: 545,234. Coated fabrics. WINGFOOT CORPORATION. March 13, 1941, No. 3431. Convention date, July 2, 1940 [Class 140] A foodstuff package comprises a wrapper of plasticized rubber hydrochloride coated on the inside with a moisture-proof coating to prevent contamination of the. food product by the plasticizer, e.g. butyl stearate or dibutyl phthalate. The rubber hydrochloride may be stabilized against photo-chemical deterioration by hexamethylene tetramine. Suitable moisture proof coatings include ethyl cellulose, chlorinated rubber, cyclised rubber such as Pliolite, polyvinyl resins or waxes to which plasticizers may be added. A specific comprosition comprises Pliolite resin and paraffin wax dissolved in gasoline. The coated film may be formed into a bag and heat sealed. Specification 503,974 is referred to.
Patent GB-432801-A (GB)
Title: Improvements in or relating to the method and means of producing rubber thread
Filed: 1934-02-02
Abstract: 432,801. Cutting rubber into threads. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, and HEALEY, J., c/o Dunlop Rubber Co., St. Mary's Mills, Leicester. Feb. 2, 1934, No. 3465. [Class 70] [See also Group VIII] In cutting rubber threads from sheet rubber, the sheet is subjected to pressure adjacent the knife. The process is applicable to both the intermittent, and continuous spiral cut methods in which the sheet is wrapped around a rotating drum. Thus the sheet 1 on the rotating drum 2 is cut by a knife 4 carried by a member 5 moved along the axis of the drum. A band 6, preferably of steel, contacts with the rubber at a distance of say # inch from the knife cut and engages a pulley 7 carried on an arm 8 hinged at 9 to the member 5. Alternatively, the pulley is carried by mechanism operating to move it in similar manner as the member 5 is moved, usually through the intermediary of a rotatable threaded rod. Springs or weights may be used to tension the band 6. The margin of the rubber where the knife commences may have a strip of paper or other material secured to it.
Patent GB-535964-A (GB)
Title: Hand operated apparatus for use in the production of butter, cream or the like
IPC: A01J15/14
Filed: 1940-02-26
Abstract: 535,964. Churning- apparatus. ASPLAND. E. Feb. 26, 1940. No. 3539. [Class 86] Churning-apparatus comprises a fixed frame 1 in which is mounted rotary clamping means 2 for a container 7, the rotation being effected by the winding and unwinding of a cord 11 on a pulley 3.
Patent GB-1127914-A (GB)
Title: Bolt head for use with resinous securing compositions
Inventor: MCQUEEN-LEACH JAMES JOHN WILLI
IPC: C04B40/06
Filed: 1965-10-05
Abstract: 1,127,914. Anchor bolts. EXPLOSIVES & CHEMICAL PRODUCTS Ltd. 3 Oct., 1966 [5 Oct., 1965], No. 3615/68. Divided out of 1,127,913. Heading F2H. A bolt for anchoring with a resinous compound comprises a head having a plurality of projecting surfaces substantially symmetrically disposed along it, and lying in a plane coincident with the longitudinal axis of the bolt head.
Patent GB-361728-A (GB)
Title: Process of, and apparatus for, recovering oil from aqueous emulsions thereof
IPC: C11B13/00
Filed: 1931-02-05
Abstract: <PICT:0361728/III/1> Oil is recovered from aqueous emulsions thereof by passing a thin layer of the emulsion over a heated surface, whereby the emulsion is caused to break down by frothing, and the resulting oil and water thus separated are collected in a vessel from which the water is drawn off.  The separated oil may be passed over a second heated surface to remove final traces of water.  An emulsion, such as condensed exhaust steam, contained in a tank 14, as shown in the Figure, flows in a thin layer over an inclined hollow plate 10 which is heated by steam.  The plate 10 may be flat, concave, or convex and is provided with an upright rim and with fixed or adjustable baffles arranged transversely so that the emulsion is alternately directed towards the sides of the plate and then towards the middle.  The baffles are preferably of channel section and have openings at the base to provide a free passage for the oil and water. A V-shaped dam is mounted towards the bottom of the plate 10, at the apex of which is an orifice through which the oil and water passes and into a receiver 17.  The separated oil passes through a discharge pipe 19 and flows over the lower part of the heated plate 10 to remove final traces of water.  Flat plates may be mounted on the baffles to prevent splashing.
Patent GB-723902-A (GB)
Title: Improvements in foundry moulding machines
IPC: B22C11/04
Filed: 1953-02-12
Abstract: 723,902. Moulding-machines. HALLSWORTH, H. B. Feb. 12, 1953 [Feb. 12, 1952], No. 3636/52. Class 83 (1). A foundry moulding-machine comprises a rotatable table carrying a number of patterns, fluid-operated piston and cylinder mechanism for indexing the table from a loading station, where a mould box is fitted to a pattern, to a sand squeezing station and subsequently to an unloading station, all the operations being effected by fluid means interconnected with the indexing means so that sand filling, sand squeezing and mould removal take place simultaneously. The machine comprises an indexible table 10, Fig. 1, having four pattern plates 11 equally spaced thereon, a moulding box being fitted on at station A, sand-filling taking place at station B and sand-ramming and unloading being effected respectively at stations C and D. The machine is started by a valve F which opens a piston 132 in cylinder 13 to pneumatic pressure and starts the indexing movement of the turret in an anti-clockwise direction. As the piston moves a port 131 is uncovered to allow pressure to pass to a locking plunger 121 .which, in conjunction with stops 12 on the table, limits each table indexing movement to 90 degrees. The piston 132 subsequently controls a valve 133 which allows pressure to pass to the various pneumatic or hydro-pneumatic cylinders B 1 , C 1 , D 1 , for operation. The final movement of the piston 132 opens the cylinder 13 to exhaust and the piston returns for a repetition of the cycle of operations which continue until the valve mechanism F is manipulated to stop the machine. The table indexing mechanism comprises in addition a roller chain which passes around a free-wheel sprocket secured to a vertical spindle 14, Fig. 2, carrying the table 10. One end of the chain is connected to the piston 132 and the other end to a dash-pot 192 having pressure fluid admitted at 194, Fig. 1, to effect the return movement of the indexing year. One half of a moulding box 21, Fig. 2, is placed on a pattern plate at station A.and indexed to the sand-filling station B. Prior to reaching this latter station a pivoted rim 22 is brought down on to the top edge of the mould by cam and roller mechanism 26, 25. The box is filled with sand and moves to station 3 where the sand is rammed by a fluid-operated plunger 30. Finally the mould box reaches station D.where it is vibrated by a device 374 which comes into operation just prior to four upstanding rods 34 of a further piston and cylinder device engaging the underside of the mould box to lift it from the pattern plate. The rim 22 is pivoted into a vertical position free from the mould box at this station. The pattern plates 11 may be arranged so that succeeding top and bottom mould halves arrive at station D, thus enabling complete moulds to be assembled adjacent to station D.
Patent GB-874675-A (GB)
Title: Improvements in margarine manufacture
Inventor: LINDSAY DAVID STEPHEN
IPC: A23D7/00
Filed: 1958-02-04
Abstract: To an oil consisting of a corandomized mixture of at least one oil of the palm oil type with at least one oil of the coconut oil type that produces in a margarine containing it the tendency to develop a grainy structure, there is added a minor but sufficient quantity, e.g. 5% by weight, of unrandomized oil of the coconut oil type to overcome the tendency; other vegetable and hydrogenated vegetable oils such as groundnut oil, hydrogenated groundnut oil and hydrogenated soybean oil may additionally be blended in a proportion of up to 45% by weight.  Specification 832,377 is referred to.ALSO:To an oil consisting of a corandomized mixture of at least one oil of the palm oil type (palm oil, tallow, hydrogenated whale, fish and vegetable oils) with at least one oil of the coconut oil type (coconut, palm kernel and babassu oils) that produces in a margarine containing it the tendency to develop a grainy structure, there is added a minor but sufficient quantity e.g. 5% by weight, of unrandomized oil of the coconut oil type to overcome the tendency; other vegetable and hydrogenated vegetable oils such as groundnut oil, hydrogenated groundnut oil and hydrogenated soybean oil may additionally be blended in a proportion of up to 45% by weight. Specification 832,377 is referred to.
Patent GB-110289-A (GB)
Title: Improvements in Rifle Targets.
Inventor: REID CHARLES
IPC: F41J7/02
Filed: 1917-03-14
Abstract: 110,289. Reid, C. March 14, 1917. Targets.-Relates to targets on two pairs of parallel levers as described in Specifications 6/06 and 15319/07, and particularly to the arrangements for accommodating targets of different breadths. In the forms in which the liners engage pivots on the target and are attached to an axle by holders clamped thereto at any distance apart, the holder has the construction shown in Figs. 3 and 3<a>. The plate d, to which the lever a is bolted, is locked at any one of a series of notches in the axle c, by means of a half-round key g. The bolts are let into slots e, e<1>. An axle engages the main standard i by a head h, Fig. 4. In the form in which the levers are carried by independent trunnions and are connected by cross-frames carrying the targets, the sliding sockets l shewn in Fig. 5 are provided on the frames k to receive the legs of the target. The targets may be kept in position during wind or in changing by means of a hook which connects the upper and lower levers together or to the standard.
Patent GB-279297-A (GB)
Title: Improvements in electrical hoisting and lowering apparatus
IPC: B66C13/23
Filed: 1927-02-09
Abstract: 279,297. Naamlooze Vennootschap Hengelosche Electrische en Mechan:ische Apparaten-Fabriek, and Booden, A. Feb. 9, 1927. Drawings to Specification. Electric plant.-In electric hoisting apparatus in which the hoisting drum can be driven not only by a main motor but also by an auxiliary motor of small power and speed the auxiliary motor is coupled to the winding drum by a gear train of greater ratio than that of the train connecting the drum and main motor. The arrangement is such that in the first lowering positions the main motor has the reverse current connection and the auxiliary motor has the lowering direction, while in the first hoisting positions the main motor is connected for hoisting and the auxiliary motor is connected in the direction of lowering.
Patent GB-632382-A (GB)
Title: Improvements in or relating to lifting and transporting equipment
IPC: B66C23/36
Filed: 1947-02-07
Abstract: 632,382. Cranes etc.; loading and unloading &c. JONES, Ltd., W., and FERGUSON, T. M. Feb. 7, 1947, No. 3720. [Class 78 (iv) [Also in Group XXXI] In lifting and transporting equipment for heavy loads of the kind provided with handles connected to the frame for moving the latter about the axle of the running wheels and with a jib for supporting the load, the load is attached to lifting mechanism which is suspended from a trolley movable along the jib. The jib 6 is pivoted to the frame 1 at 5a and is extended downwardly at 7A, 7A<SP>1</SP> to form supports provided with wheels 8. The upper ends of the jib are brought together and formed into channels 7 for receiving the rollers 10, 11 of a trolley 9. One end of a cable 14 is anchored to axle 12 of rollers 10, the cable passing around a pulley block 15 and guided over a pulley 16 mounted on axle 13 of rollers 11 and thence over jockey pulley 17 to winding drum 18. Axle 2 is dead and has secured to it a U-shaped bracket 20 to which is pivotally secured a sub-frame 21 so that it can swing in a horizontal plane about axle 2. A power unit 22 is mounted in a wheel 23 which it drives through a pinion 24 and internal gear 25. The wheel may be mounted in a horizontal roller race to enable it to be turned round for reversing and manoeuvring. Trolley 9 is adapted to be releasably locked to the jib 7 at both extremities of its travel by means of levers 32, 33, Fig. 3, each of which is pivoted at one end to the trolley and has a finger at its other end engaging in gap 30 or 31 in the channels. Extensions 32A, 33A of these levers lie over the edge of a bell-shaped member 40 supported by pivoted arms 41 which permit it to rise a short distance when contacted by a stop 27 on cable 14 which passes through it. A load W is raised by first removing a catch, not shown, connecting frame 1 to sub-frame 21, and then raising the handles until wheels 8 rest on the floor on either side of the load. Pulley block 15 is then attached to the load after which the handles may be lowered by removing a catch 26 and refastening frame 1 to sub-frame 21, chain lines, Fig. I, the load then being raised by drum 18 until stop 27 contacts member 40 releasing levers 32, 33 which allows the trolley to move along the jib. As the centre of gravity of the load passes to the rear of axle 2 the jib structure tilts back to the full line position where it is locked by catch 26. On the trolley reaching the rear end of the jib the load may be lowered onto a platform P, Fig. 2, by reversing drum 18 which also locks the trolley when it can be transported by the power wheel, being steered by the handles.
Patent GB-566238-A (GB)
Title: Improvements in or relating to the manufacture of thiobarbiturates
Filed: 1943-03-08
Abstract: Ethyl (1-methylbutyl)-thiobarbituric acid is prepared by a process of condensing thiourea with the ethyl ester of ethyl (1-methylbutyl) cyanoacetate and hydrolysing the imide so produced, which is characterised in that the ethyl - (1 - methylbutyl) - ethyl cyanoacetate employed is obtained by condensing ethyl cyanoacetate with methyl propyl ketone, reducing the unsaturated ester thus obtained, and ethylating the resulting product.  The product on treatment with a base is converted into a salt.  The condensation is preferably carried out in the presence of from one to two equivalents of sodium ethoxide.  In an example, sodium is dissolved in absolute alcohol, powdered thiourea is added followed by ethyl (1 - methylbutyl) ethyl cyanoacetate.  The reaction mixture is heated under reflux for two hours, the excess alcohol removed and the imide precipitated by hydrochloric acid.  On boiling with N/1 sulphuric acid for one hour, the ethyl (1-methylbutyl) thiobarbituric acid is formed.