baber/WOPTO huggingface dataset:
Patent GB-728379-A (GB)
Title: Improvements in or relating to portable radio receivers
Inventor: FLORAC RICHARD R
IPC: H04B1/38
Filed: 1952-11-10
Abstract: 728,379. Radio receiving sets. AIRCALL, Inc. Nov. 10, 1952, No. 28315/52. Class 40 (5). A portable radio receiver comprises a superregenerative radio-frequency section, an audio amplifier section and a battery power supply mounted in an elongated polythene casing, the portion remote from the radio-frequency section including an earphone and being adapted to be held in the hand against the ear, and a shortwire aerial being attached to the radio-frequency section in such a position that it extends away from the head when the receiver is held in its operative position. The circuit of the receiver is shown in Fig. 4 and the arrangement of the components, excluding the wiring, is shown in Fig. 2. The radio-frequency section comprises an aerial coil 12 and an oscillator coil 44, tuned by a variable ceramic condenser 46 and fixed condenser 48, together with a miniature triode-connected pentode valve 24 which is periodically quenched by the action of a parallel connected resistor-condenser combination between the control grid and H.T. positive. The output of the radio-frequency section is coupled via radio-frequency choke 52 and miniature transformer 56 to the pentode 74 having a crystal earphone 86 in its anode circuit, the crystal earphone being by-passed for direct currents and tuned in the audio-frequency range by the audio-frequency choke coil 82. High-tension voltage is supplied by the 30-volt hearing aid battery 62 and heater current by the 1¢ volt cell 34, the latter being connected in series with an on-off switch 102. The aerial 4 comprises a short length of flexible stranded wire surrounded by a plastic sheath 4a and may be folded down against the side of the receiver when not in use. It is stated that the transformer 56, choke 82, valve 74 and a terminal strip 94 provide shielding between the lower portion of the receiver which is held in the hand and the radio-frequency portion which is otherwise unshielded so as not to reduce the sensitivity of the radio-frequency section.
Patent GB-319665-A (GB)
Title: Motor for loud speakers
IPC: H04R11/02
Filed: 1929-09-19
Abstract: 319,665. Farrand Inductor Corporation, (Assignees of Farrand, C. L.). Sept. 25, 1928, [Convention date]. Loud-speakers; magnetic instruments. - The armature of a loud-speaker is mounted between a plurality of poles of a field magnet in such a way that its tendency to revert to a normal position, when displaced, under the action of the field magnet is eliminated. The armature consists of two or more magnetic portions, 17, 18, Fig. 9, co-operating with two or more gaps, and joined by a non-magnetic portion. The flux changes which take place in the air gaps as the armature moves from left to right are represented by the curves a and b, Figs. 12 and 13. The total flux a and b in the system is formed by adding these quantities, Figs. 14 and 15, and it is seen that the portions of the curves between the ordinates x, y give rise to a maximum as in Fig. 15. By altering the distance between the portions 17, 18 of the armature, different portions of the curves a, b may be utilized as in Figs. 19, 20, 21 and the total flux in the system can be made constant as shown in Figs. 21, 22, so that the armature does not tend to revert to any standard position as a result of the magnetic force of the system. The armature may be stamped out of one piece off metal together with the connecting rod, portions 17, 18, Fig. 6, serving as the armature bars. It is supported by leaf springs 20, 21, Fig. 3, in the gaps formed by the pole pieces of an electro or permanent magnet 24. The pole pieces and armature bars may be so shaped as to conserve the flux and minimize fringe losses, and the pole faces have the same length as the maximum armature stroke, as have the magnetic portions of the armature. The armature may also consist of two bars elongated at right angles to the direction of vibration, the pole faces being similarly elongated. The armature may have more than two magnetic portions and may operate in a plurality of gaps, Fig. 5. The speech coils may be wound on the pole pieces or on the armature bar. Reference has been directed by the Comptroller to Specification 238,310.
Patent GB-1192015-A (GB)
Title: Improved Drive for Mechanical Counters
Inventor: ROBB ANDREW CRAWFORD
IPC: G06M1/10
Filed: 1966-06-25
Abstract: 1,192,015. Counters. COUNTING INSTRUMENTS Ltd. 23 June, 1967 [25 June, 1966], No. 28577/66. Heading G4D. The drive to a mechanical counter includes a lost-motion device to overcome spurious operation due to vibration. In the position of rest the armature 18 of a magnet 20 is in upper position with a strong spring 24 pressing plate 28 against plate 26, while the lower claw of pallet 12 engages wheel 10. Energization of the magnet pulls armature 18 downwards to free plates 26, 28 so that the pallet 12 is rocked by spring 30 to advance the wheel 10 in known manner. The magnet may be replaced by a pneumatic or hydraulic device.
Patent GB-286102-A (GB)
Abstract: 286,102. Bott, H. E. March 21, 1927. Matches.-A match comprises a part b of uniformly decreasing cross-section terminating in a sharp point or chisel-like edge so that the match may be used as a toothpick or as a manicure or pedicure implement. The match sticks may be made of double length with the reduced portions adjoining one another and severed before packing or use. Or the sticks before or after dipping and of single or double length may be cut obliquely along a line d to provide a reduced portion on each match stem. Specification 15926/01 is referred to.
Patent GB-319505-A (GB)
Title: Bottle closure
IPC: B65D41/12
Filed: 1928-10-06
Abstract: 319,505. Goldstein, E. Oct. 6, 1928. Stoppers serving secondary purposes.-Relates to crowncorks of the type having an advertisement or other sign in the interior thereof. One or more mono-chromatic or poly-chromatic distinction elements c are applied to the lower side of the cap and covered by a transparent coating indifferent to the chemical properties of the contents of the bottle. A film of nitro-cellulose may be used to cover the element c, or the element may be completely enclosed by a protective coating. Alter. natively the distinctive marking may be produced on the sealing disc by a dye mixed with a chemically neutral substance.
Patent GB-1069342-A (GB)
Title: Derivatives of 5-aryloxyoxazolidines
Inventor: CROWTHER ALFRED FREDERICK
IPC: C07D263/06
Filed: 1963-07-19
Abstract: Acid addition salts of novel compounds of general formula <FORM:1069342/C2/1> wherein R1 is alkyl, hydroxyalkyl, cycloalkyl, alkenyl or aralkyl, R2 is hydrogen or alkyl and Ar is naphthyl, l-naphthyl substituted by alkyl, or 5,6,7,8-tetrahydronaphthyl or is a phenyl radical bearing one or more alkyl, alkoxy, aryloxy, arylthio, acyl, aralkyl, halogen or heterocyclic substituents, are prepared by interacting a compound of formula ArO.CH2.CHOH.CH2.NHR1 wherein Ar and R1 have the above meanings or an acid addition salt thereof with an aldehyde of formula R2.CHO wherein R2 has the above meaning.  Pharmaceutical compositions, which may be in the form of tablets, capsules, aqueous or oily solutions, aqueous or oily suspensions, dispersable powders, syrups or elixirs, comprise one or more of the above novel acid addition salts in admixture with a pharmaceutically acceptable diluent or carrier.  They possess b -adrenergic blocking activity.
Patent GB-1131111-A (GB)
Title: Improvements relating to hitches
Inventor: WENZEL ALFRED JOHANNES
IPC: A01B59/042
Filed: 1965-07-07
Abstract: 1,131,111. Tractor hitches. MASSEYFERGUSON G.m.b.H. 22 June, 1966 [7 July, 1965], No. 28878/65. Heading A1P. The lower links 11 of a tractor power lift mechanism support a transverse drawbar 19 which has a post 15 connected to the tractor by a double bar 16 and which carries an upper clevis 21 and a lower hook 23 for coupling a trailer. A bevel gearbox 22 is also carried by the drawbar 19 and connected to the power-takeoff of the tractor. The hook 23 is supported by plates 25 and, in use, is lifted by the power lift to engage and lift the trailer coupling whereafter the linkage is braced by a rod 27 which has a slot 29 engaging a pin 30 on the bar 16 so that the power lift is relieved of load. In an embodiment the upper bar 16 and rod 27 are replaced by a triangular plate the lower corner of which supports the hook and which is coupled to the tractor by a telescoping member having a spring loaded pin by means of which the linkage is braced in its lifted position. Bars extending laterally from the drawbar 19 and from beneath the tractor body connect an implement at the side of the tractor.
Patent GB-735995-A (GB)
Title: Injection molding apparatus
Inventor: WATKINS ARTHUR SCOTT
IPC: B29C45/12
Filed: 1953-10-20
Abstract: 735,995. Injection-moulding apparatus. PRODUX CORPORATION. Oct. 20, 1953, No. 28912/53. Class 87 (2). Plastic material is discharged from a cylinder 22 by a screw 15 through two (or more) apertures 32, 33 in a nozzle 31, conduits 36, 37 in an oscillatable valve 35, and passages 38, 39 each leading to a mould. Only one of the two conduits 36, 37 may be aligned with the apertures 32, 33 at any one time. The nozzle may be attached 'to the cylinder or, as shown, integral therewith. The valve is held against the nozzle by means of a ring 43 and bolts 47, and may be turned by means of a hydraulic cylinder 50 acting through arm 54 keyed on shaft 42 extending from the valve. In modifications, Figs. 4 to 7 (not shown), the valve is pressed against the nozzle by hydraulic means. The temperature of the cylinder 22 is controlled by a water-jacket 25.
Patent GB-225050-A (GB)
Title: Improvements in and relating to electric overload switches or cut-outs
IPC: H01H71/12
Filed: 1923-11-16
Abstract: 225,050. Stockings, A. P. Nov. 16, 1923. Merury switches ; thermal switches; cases.- In automatic overload cut-outs two vertically disposed chambers are arranged with conducting liquid bridging contacts in the upper chamber, a valve controlling a passage between the chambers in such a manner that when the valve is opened by electromagnetic or thermal means, the liquid passes into the, lower chamber, thus breaking the controlled circuit. Contacts are disposed in the lower chamber arranged to be bridged by the liquid when the cut-out is inverted in readiness for a subsequent operation. As shown in Fig. 2 contacts 10, 11 in the chamber a are bridged by mercury 12. When the electromagnet 8 is sufficiently energized its core 7<a> is attracted against the spring 9 raising the valve 6 from its seating 5 and permitting the mercury to escape into chamber b. In this chamber the height of the mercury is insufficient to bridge contacts 13, 14 until the cut out is inverted, Fig. 3. Various forms of the insertion are described designed as screw-in cut-outs. In the form shown in Figs. 15 and 16 for thermal operation a corrugated' capsule 38 filled with suitable liquid or gas is secured within the cutout and a current-carrying wire 39 is arranged adjacent to the corrugations of the capsule. When the heat generated by the wire 39 has expanded the contents of the capsule sufficiently, the pressure exerted through a spring 43 moves over a rod 20 overcoming the resistance due to the pressure of the spring-pressed plunge 32 bearing in an annular recess 33, the rod being brought to rest with the plunger bearing in a second recess 33a. In this position the reduced portion 24 of the rod 20 allows the mercury to pass through the opening 22a between the upper and' lower chambers 22, 23 so breaking the circuit. The rod 20 is restored by hand before the cut-out is rotated through 180‹ in readiness for a subsequent operation. Glass windows 37 are provided to enable the position nf the mercury to be seen.
Patent GB-956002-A (GB)
Title: Process for the manufacture of catalysts for the production of monomeric vinyl estersin the gaseous phase
IPC: B01J31/04
Filed: 1960-08-23
Abstract: Catalysts, for the gas phase reaction of organic acids with acetylene to give vinyl esters, are manufactured by causing a solution of Zn or Cd acetate to move through a static mass of active carbon particles at room temperature, the solution having a volume greater than the absorptivity of the mass and containing more acetate than is to be taken up by the mass; the unabsorbed solution and the mass containing absorbed solution are separated when the concentration has reached cx - ba/c - be where a is the desired Zn or Cd content of the catalyst (g./kg.), b is the weight in kg. of the untreated mass, c is the volume of the acetate solution (l.), e is the absorptivity of the active carbon (l./kg.), and x is the initial concentration of Zn or Cd in the solution (g./l.).
Patent GB-1104670-A (GB)
Title: Improvements in or relating to air cushion borne vehicles
Inventor: BINGHAM ALAN EDGAR
IPC: B60V1/16
Filed: 1965-07-09
Abstract: 1,104,670. Air cushion vehicles. BRITISH HOVERCRAFT CORPORATION Ltd. 7 Oct., 1966 [9 July, 1965], No. 29294/65. Heading B7K. An air cushion vehicle has a rigid base platform 1 formed with a bevelled periphery 3, which forms one wall of an annular air duct, the other wall being formed by a flexible structure comprising one part 4, secured at 4A to the base of wall 3 and at 4B to a further flexible member 5, which is secured at its upper edge 5A to the upper edge of wall 3 and is free at its lower edge 5B to constitute a skirt. Triangular flexible diaphragms 6 connect walls 4 and 5 and an aperture is formed in wall 4 between each pair of diaphragms to permit discharge of air from the annular duct to the inside wall of member 5, from which it discharges downwardly to form an air curtain. The apertures 7 are bridged by ties 8.
Patent GB-912222-A (GB)
Title: Apparatus for the generation of short-time neutron impulses
IPC: G21G4/02
Filed: 1961-08-14
Abstract: 912,222. Nuclear reactors. BROWN, BOVERI & CIE A.G., and BETEILIGUNGS UND PATENTVERWALTUNGSGESELLSCHAFT. Aug. 14, 1961 [Nov. 25, 1960], No. 29311/61. Class 39 4). Apparatus for generating short bursts of neutrons comprises a gas-tight container containing a sub - critical amount of high enriched fissile material mixed homogeneously or heterogeneously with a moderator, and channels or the like extending through the container and the fissile material, a predetermined amount of additional fissile material sufficient to create critical conditions being passed through the channels at a predetermined speed. The apparatus shown comprises a hollow sphere 1 containing spherical fuel elements of enriched uranium carbide coated with graphite. A central bore 4 passes through the sphere and a fuel element 7 containing sufficient fuel to cause criticality can drop through the bore under gravity to produce a burst of neutrons. The motion of the fuel element 7 may alternatively be controlled by the pressure of an inert gas.
Patent GB-510579-A (GB)
Title: Improvements in and relating to electric condensers and circuits comprising such condensers
Inventor: RATH WERNER
IPC: H01G4/12
Filed: 1938-11-05
Abstract: 510,579. Condensers. PORZELLANFABRIK KAHLA. Nov. 5, 1938, Nos. 29414 and 29415. Convention dates, Oct. 11, 1937, and March 7, 1938. Drawings to Specification. [Class 37] [Also in Group V] An electric condenser has, as dielectric, a sintered ceramic mixture composed substantially of titanium dioxide and beryllium oxide. The mixture may be made more plastic before firing by adding small quantities of clay, kaolin or soapstone. The dielectric constant obtained is higher than with comparable mixtures of titanium dioxide and magnesium oxide, while the angle of loss is very low. The dielectric constant of the material has a negative temperature coefficient, which varies according to the relative proportions of the ingredients, and condensers or circuits, e.g. oscillatory circuits, may thus be made to have a negative or a zero temperature coefficient. The material may be readily fused to glass.
Patent GB-674257-A (GB)
Title: Improved manufacture of dentures
IPC: A61C13/10
Filed: 1949-11-17
Abstract: 674,257. Artificial teeth. CIARPAGLINI, S. Nov. 17, 1949 [Sept. 3, 1949], No. 29463/49. Class 81 (ii). [Also in Group V] In moulding complete dentures embodying teeth 5, Fig. 3, mounted on an arcshaped support 1 of resin, (see Group V), the support may have a reinforcement which may be removable, with two projections 4 for fitting springs for testing the denture or for the control of mastication. The teeth are mounted in the support which is then embodied in the moulding of the gum portion.
Patent GB-534877-A (GB)
Title: Improvements in and relating to the manufacture of nicotine
IPC: C07D401/04
Filed: 1939-11-07
Abstract: 534,877. Nicotine. EDWARDS, K. B. Nov. 7, 1939, No. 29567. [Class 2 (iii)] Nicotine alkaloids are extracted from commercial nicotine sulphate by treatment with a slight excess of sodium or potassium hydroxide followed by dehydrating the mixture by heating with dephlegmation of the vapour under reduced pressure. The expression dephlegmation as used in the present invention means the cooling of mixed vapours through a fractionating column so that the vapour emerging from the column has a boiling point approximately that of the boiling point of water at the pressure in use. The vapour of the nicotine condensed in the column is subjected to the usual counter-current action of the mixed vapours and emerges from the base of the column. In the preferred form of the invention solid sodium hydroxide is added in sufficient amount to neutralize all the free and combined sulphuric acid and to leave a small amount in excess. This dissolves with evolution of heat to form an extremely concentrated solution of sodium sulphate with a separation of free nicotine. The addition is made directly into the closed distillation vessel, and the process of dephlegmation under reduced pressure at once applied without the vapours of nicotine coming into contact with air. When most of the water has been removed, a small stream of superheated steam is admitted, forming what appears to be hydrates of nicotine having a, lower boiling point than nicotine. If the temperature is maintained at 100‹ C. at 70-80 mm. pressure at the foot of the column, a stream of almost anhydrous nicotine is obtained therefrom, while the vapour from the top of the deplegmator still contains only a very small amount of nicotine. The residue in the still consists of a dry anhydrous powder of sodium sulphate. The expression "nicotine" includes the mixture of alkaloids contained in commercialnicotine sulphate.
Patent GB-465047-A (GB)
Title: Improvements in or relating to the carbonisation of mixtures of coal and oil
IPC: C10B55/02
Filed: 1935-10-26
Abstract: In the production of coke by the low temperature distillation of a freely-flowing mixture of powdered carbonaceous material and oil in an externally heated, rotating, inclined cylindrical retort, a proportion of a soium salt, such as caustic soda or sodium carbonate, preferably in the form of an aqueous solution, is added to the mixture prior to its introduction into the retort.  The caustic soda solution may comprise the liquor which has been used for washing the volatile products produced in the process and preferably comprises a 10 per cent NaOH solution.  1 to 2 per cent of the aqueous solution is added to the carbonaceous material--oil mixture, the aqueous solution containing, if desired, a proportion of soda ash such as 1 to 10 per cent on the weight of the aqueous liquor.  In an example, equivalent weights of powdered coal and oil with 1 \ba1/4\be per cent of the aqueous liquor are intimately mixed prior to distillation.  A distillation temperature of 500--600 DEG  C. is specified. Specifications 393,601, 393,602; and 443,593, [Group XII], are referred to.
Patent GB-1273756-A (GB)
Title: Improvements in or relating to pulse converters
Inventor: ROBROCK RICHARD BARKER II
IPC: H03K3/02
Filed: 1969-06-11
Abstract: 1,273,756. Bulk effect semi-conductor pulse circuits. WESTERN ELECTRIC CO. Inc. 11 June, 1969 [12 June, 1968], No. 29622/69. Heading H3T. In a pulse converter having the cathode 15 of one bulk effect semi-conductor device 10 connected to the anode 16 of another bulk effect device 11, each device is biased sufficient to permit a pulse to be generated therein when a signal pulse is applied to a third electrode, between its anode and cathode, but not sufficient for the generation of further pulses when the signal on the third electrode is removed so that a signal pulse T1 applied to the third electrode of device 10 produces a drop in potential providing an output pulse of one polarity at 20 and a signal pulse T2, of the same polarity as the other signal pulse, applied to the third electrode of the other device 11 produces a rise in potential providing an output pulse of opposite polarity. As shown the devices 10, 11 are biased below the threshold voltage necessary to cause domain nucleation below the oscillation sustaining voltage but above the domain sustaining voltage. A positive pulse T1 from a pulse generator 25 applied to device 10 causes a domain to travel between the cathode 15 and anode 19 lowering the current through the device 10 during propogation of the domain. The other device 11 act as a resistive load so that a negative going output pulse V L  is produced. Similarly a domain is caused to flow in device 11 by a positive input pulse T2 which causes a positive going output. The lengths of the devices 10 and 11 may be different so that different length output pulses V L , V H  are produced. The third electrode of each device may be an ohmic contact bonded to the semiconductor or may be a capacitive contact isolated from the semi-conductor by an insulating layer. The devices 10 11 may be of gold doped Ge CdS, GaAs, InP, CdTe or ZnSe.
Patent GB-504744-A (GB)
Title: Improvements in or relating to navigation aiding radio transmitters
IPC: G01S1/02
Filed: 1937-10-29
Abstract: 504,744. Directive wireless signalling. MARCONI'S WIRELESS TELE. GRAPH CO., Ltd., COCKERELL, C. S., and ROBB, J. G. Oct. 29, 1937, No. 29667, [Class 40 (v)] Relates to means for preventing the back "lobes" radiated from a navigational beacon station from giving misleading indications to a navigator, According to the invention an auxiliary field, which may be circular as shown at SRC in Fig. 3, or heart-shaped as shown at CRS in Fig. 4, is radiated from the origin of the navigational beams L1, L2, and is used to produce an AVC voltage which renders the receiver insensitive to the back lobes l, as soon as the craft under navigation enters the auxiliary field. The field must have a range greater than that of the back lobes l but less than the main navigational beam L1, L2. A single main beam may be used instead of two overlapping ones, in which case that and'the auxiliary field are keyed with interlocking signals, so that within the sector AOC of Fig. 7 a continuous note will be heard, though not outside it.
Patent GB-602660-A (GB)
Title: Improvements in animal traps
IPC: A01M23/30
Filed: 1945-11-08
Abstract: 602,660. Animal traps. MILLER, A. G. Nov. 8, 1945, No. 29763. [Class 5(i)] In an animal trap of the throw-over type the bait-holding member 21 is pivoted on a staple 24 and is provided with a flange 22 to hold the bait in place and a flange 27 to engage the detent member 18 holding the striker 11 in the set position. Modifications of the staple 24 are described.