baber/WOPTO huggingface dataset:
Patent GB-1449841-A (GB)
Title: Oscillators
IPC: H03B5/04
Filed: 1973-04-09
Abstract: 1449841 Oscillators; surface wave devices MULLARD Ltd 8 April 1974 [9 April 1973] 16917/73 Headings H3F and H3U An oscillator includes a piezoelectric body 1 having an acoustic surface wave propagation surface formed thereon, a first and a second pair of interdigital transducers 3, 4 and 6, 7 respectively, each pair comprising a launching and a receiving transducer, i.e. 3, 6 and 4, 7 respectively, corresponding amplifying means 10, 12 to amplify the output of the receiving transducer of each pair and feed the corresponding launching transducers; the propagation directions 5, 8 respectively are selected so that the corresponding temperature coefficients of the frequences of oscillation are of a significantly different non-zero value each substantially constant with respect to normal manufacturing variations in the orientation of the transducers- Output means, i.e. mixer 17 and band pass filter 18, for deriving an output whose frequency is either the sum or difference of the component oscillations, the respective frequences of which are so selected in relation to the corresponding temperature coefficients that the temperature coefficient of the output frequency is substantially zero. Phase-shifters 11, 13 may be provided for the purposes of frequency adjustment. In selecting a respective desired oscillation-frequency in each loop, use may be made of the frequency determining properties of the transducers 3, 4, 5, 6: alternatively filtering means may be provided in the feedback loops. The arrangement may be used with a lithium niobate crystal, in which case both temperature coefficients are positive and the difference frequency is employed, or with a quartz crystal in which the temperature coefficients are of opposite sign and the sum frequency is employed.
Patent GB-1085433-A (GB)
Title: Microbiological process
Inventor: BUTT WALTER DION
IPC: C12P7/64
Filed: 1965-04-22
Abstract: Octadeca-11:15-dienoic acid is prepared by partially hydrogenating a polyunsaturated fatty compound, e.g. linolenic acid, ester or soap, containing at least three olefinic double bonds with bacteria of the genus Clostridium or Lactobacillus Clostridium sporogens and Lactobacillus helveticus are preferred, and linseed oil and soyabean oil are used in examples.  The product may be used, together with a suitable diluent as a flavouring for foodstuffs.ALSO:Foodstuffs are flavoured by the addition of octadeca-11 : 15-dienoic acid prepared by the partial hydrogenation of a poly-unsaturated fatty compound containing at least three olefinic double bonds with bacteria of the genus Clostridium or Lacto-bacillus (see Division C2).  A suitable diluent e.g. an edible oil may be present and the acid may be oxidized before addition or autooxidized in situ to form a flavour compound.
Patent GB-421128-A (GB)
Title: Improvements in or relating to electric couplings
Filed: 1933-06-14
Abstract: 421,128. Plug couplings. COOK, C. R., Chesworth, Horsham, Sussex. June 14, 1933, No. 17009. Addition to 403,448. [Class 38 (i)] The connection of a wire to the contact of a coupling of the type described in the parent Specification is effected by means of a clamping- member having a slot to fit round one limb of the contact and a clamping screw co-operating with a hole or slot to grip the wire. The clamping member 2, Fig. 2, is of U-shaped cross-section and embraces both the contact 1 and the wire 1<a> and is anchored by a pin passed through the holes 4 and through the eye of the contact 1, the screw stud 5 pressing the wire 1<a> and contact 1 together. The wire 1<a> may be inserted in the holes 4 in place of the pin, thus serving to anchor the member 2. In a modification, the clamping-member 21, Fig. 7, has an aperture 3<a> to receive one limb 20 of the contact 1, that limb being straight. The aperture 3<a> has an enlargement 25 for the wire, or there may be a transverse hole for the wire partly interpenetrating the aperture 3<a>, in either case the wire being clamped against the contact 1 by the stud 5. In another form the clamping-member 27, Fig. 8, has an extension 28 surrounding the eye of the contact 1 and lateral projections 29. These projections or the body of the clamping-member itself fit into recesses in the insulating body of the coupling and support the contact which is then secured by a cover 12 screwed on to a bolt 10. A separate support for the contact in the form of an I-shaped plate passing through the eye of the contact may be employed. Specification 371,404 is referred to.
Patent GB-1148565-A (GB)
Title: An apparatus for producing and discharging foam of a liquid cleaning or treatment agent
IPC: A47L11/32
Filed: 1967-04-13
Abstract: 1,148,565. Cleaning apparatus. REWO CHEMISCHE FABRIK G.m.b.H. 13 April, 1967 [19 April, 1966; 26 April, 1966], No. 17042/67. Heading A4F. [Also in Division B1] Apparatus for producing and discharging a foam of a cleaning liquid comprises a container 1 for the liquid 2, a foam outlet pipe 15 and a compressed gas source connected to a hollow member 4 provided with outlet openings 3, the hollow member 4 being so supported by a float arrangement 6 that the hollow member 4 is always located immediately above the surface of the cleaning liquid so that gas from the compressed gas source is directed on to the surface of the liquid thereby to produce the foam. The hollow member 4 which may be connected to a gas inlet pipe 7 by a flexible hose 8 may be supplied with gas from one or more manually operated bellows 9, 10. As shown, two bellows are interconnected by a pivotally mounted lever 11, the free end of which is provided with a bristle brush 12 which engages the article 13 to be cleaned. A pivotally hinged ring of bristles 16 is provided to facilitate cleaning of the article 13 with the foam. Reciprocation of the apparatus over the article during a cleaning process causes the lever 11 to actuate the bellows alternately. Alternatively, one or more bellows or piston cylinder arrangements may be provided which are actuated by a rod (19) (Fig. 2, not shown) forming a handle of the apparatus, and a reservoir (20) may be provided in the inlet pipe 7 to ensure a continuous supply of compressed gas to the hollow member 4.
Patent GB-397638-A (GB)
Title: Improvements in esterification of cellulose
IPC: C08B1/02
Filed: 1932-06-16
Abstract: Wood pulp is purified and at the same time rendered active for acetylation or other esterification by treatment with a fatty acid and sulphuric acid or other catalyst as used in the esterification reaction, the liquor which carries with it the impurities being subsequently separated and the pulp washed with fatty acid. Cellulose esters of good colour are obtained by the use of the purified pulp.  In the case of cellulose acetate, the acid used is acetic acid; with other esters, the acid corresponding to the esterifying radicle.  In an example, sulphite pulp is treated with a mixture of acetic acid and sulphuric acid for 10 days at 35 DEG  C.; afterwards a further quantity of acetic acid is added, the pulp filtered off, washed with acetic acid, and then pressed; the wet product is acetylated, and the cellulose acetate ripened in the acetylation solution.  The viscosity of the cellulose acetate may be regulated by varying the temperature, time and other conditions of the pretreatment.
Patent GB-876714-A (GB)
Title: Walls and like surface coating compositions containing polyvinyl acetate emulsions
Inventor: MELAMED MICHAEL
IPC: C09D131/04
Filed: 1957-05-29
Abstract: A plaster compositions for providing terrazzo-type finish to walls, floors and like surfaces comprises 80%-95% by weight of an aggregate of stone, particles having a size too great to pass a sieve with 35 apertures per inch and 5%-20% of an aqueous emulsion of polyvinyl acetate.  Preferably the maximum particle size of the aggregate is 3/16 inch.  The polyvinyl acetate emulsion may contain a minor proportion of plasticizer, e.g. butyl phthalate, and may contain xylenes as emulsifying agents.  The plaster may be applied over an undercoating according to Specification 876,713.
Patent GB-179846-A (GB)
Title: Improvements in suspender connections
IPC: A41F3/02
Filed: 1921-06-22
Abstract: 179,846. Starmer, M. June 22, 1921. Braces.-Tab ends of braces and suspenders are connected by a metal bar 12, Fig. 4, the ends of which have bent parts 14 engaging slots 5. The rod 12 is supported by a metal bridge-piece 9, Figs. 3 and 5, connecting front and rear plates 8, 7. The plate 7 is slotted at 10 to receive a strap 1 of a brace &c.
Patent GB-695511-A (GB)
Title: Improvements in or relating to knitting needles for circular, independent needle, knitting machines
IPC: D04B35/02
Filed: 1951-07-19
Abstract: 695,511. Machine knitting needles. HEMPHILL CO. July 19, 1951. [Oct. 26, 1950] No. 17159/51. Class 74 (ii). The needles for a dial of a circular machine have their tails 4 divided along the greater part of their length by a slot 5 so as to form two separate bendable fins 6, 7. The two fins are bent in opposite directions so as to frictionally grip the sides of the slots in which the needles are inserted in the dial.
Patent GB-362833-A (GB)
Title: Improvements in block bearings
IPC: F16C17/03
Filed: 1931-06-12
Abstract: 362,833. Journal bearings. AKTIEBOLAGET NOMY, 2, Norrmalmstorg, Stockholm. June 12. 1931, No. 17173. Convention date, June 21, 1930. [Class 12 (i).] In a tilting block bearing in which a supporting member 4 has recesses 8 the edges of which constitute supporting fulcrum surfaces a, b for the blocks 2 the surfaces a, b and the adjacent faces 15 of the recesses 8 make an obtuse angle with one another. By this construction jamming of the blocks 2 in the recesses 8 when starting up or reversing the direction of rotation is prevented. The contacting face 9 and adjacent faces 16 of the blocks 2 may also be inclined at an obtuse angle. The recesses 8 may have a curved outline and formed by grinding and in such case may not extend through part of the projections 13 on the supporting member 4. Grooves 14 may be formed adjacent the projection to facilitate grinding of the cylindrical face 7 on the block supporting member 4. Specification 290,637, [Class 12 (i), Bearings &c.], is referred to.
Patent GB-495888-A (GB)
Title: Improvements in thermally responsive protective devices for electrical apparatus
IPC: H01H37/54
Filed: 1937-06-21
Abstract: 495,888. Thermal switches. ENGLISH ELECTRIC CO., Ltd., ROBERTS, L., and BALL, R. D. June 21, 1937, Nos. 17200 and 26516. [Class 38 (v)] A protective device for opening the circuit of an electric machine on excessive heating thereof by the passage of current therethrough, comprises a bimetal strip type of heat-sensitive element mounted on the machine in heatreceiving association with a heated part thereof and adapted to actuate switch contacts which separate with a snap action. The bimetal strip 3 is anchored at one end by stud 5 between a metal block 4 on the core 1 and a moulded insulating casing 2, and at the other end engages a groove 6 in the casing. When overheated, the strip, after " creeping " a short distance, snaps over in the other direction. Contact 7 due to its supporting spring 9, follows the strip until arrested by stop 10 at the dead-centre position, the circuit with contact 11 being then broken. When the contacts are directly in the circuit of the controlled machine, contact 11 is insulated from the strip, but in large machines an intermediate circuit is employed. A heater coil for strip 3 may be provided in the main circuit. In a modification, Fig. 2 (not shown), the strip is adapted to carry the main current by being insulated from the block and stud by means of mica layers arranged to offer small thermal resistance, the device thus operating on both prolonged overload causing overheating and brief heavy overload. Spring snap-action mechanism and Specifications 384,777 and 418,688 are referred to. The second Provisional Specification states that a contact may be placed on the opposite side of the strip to that shown, so as to close a circuit when the strip is heated, and that the contact may be on both sides of the strip so as to serve as a change-over switch.
Patent GB-120128-A (GB)
Title: Improvements in or relating to Thermometers.
Inventor: STONES WILLIAM GRIMSHAW
IPC: G01K5/02
Filed: 1917-11-23
Abstract: 120,128. Stones, W. G. Nov. 23. 1917. Thermometers.-A liquid thermometer comprises a frame-like casing a, an opal scale c, back and front glasses d, e respectively, and a readily removable lens f; means for enabling the thermometer to be placed in a pocket in a steam pipe, &c., and for holding it in a desired position may be provided. The lens f is held at its lower end to the frame a by means of a plate g secured by a screw g<1>, and at its upper end by aT-shaped plate h, Figs. 1 and 5, having two spurs h<1> engaging the front of the lens. The plate h is itself held by a stud i having a spring j coiled around it and by aT-headed stud k passing through a slot l, the stud k being capable of being turned through 90 degrees so as to permit the plate h to be lifted against the pressure of the spring j and turned about the stud i to release the lens f. The interior of the casing may be cleaned by securing the nipple of a hose' pipe into a tapped hole a' and passing water through it to an outlet a<2> provided where shown or beneath the plate h. The lower end of the frame a terminates in a spigot b which fits into a pocket m and has a groove engaged by a set-screw n. The spigot .may be fitted with a closed ended tube o enclosing the bulb of the thermometer, and the screw u may constitute a nozzle for admitting water for cleaning the interior of the casing. The pocket may, as shown in Fig. 8, be formed with a collar r so that it may be fitted into a well s in a steam boiler, &c., and the collar may have a hardened steel set-screw r' which may be struck with a hammer after the pocket is placed in the well to form an indentation, the engagement of the screw r<1> and the indentation after removal and replacement of the thermometer ensuring that the thermometer is replaced.
Patent GB-1146609-A (GB)
Title: Semiconductor device
IPC: H01C7/105
Filed: 1966-04-20
Abstract: 1,146,609. Semi-conductor devices. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 20 April, 1966 [27 April, 1965], No. 17278/66. Heading H1K. A semi-conductor device having a negative resistance characteristic comprises a pair of regions of the same conductivity type disposed on opposite sides of the semi-conductor body and between which the electric bias is applied and an intermediate region doped throughout with a deep energy level impurity. In one embodiment a silicon body is doped with a deep level impurity such as nickel, cobalt, gold, iron, copper, maganese or zinc by plating or evaporating the impurity on to the surface of the body and then diffusing it in at 1000‹ C. in a hydrogen atmosphere, and gold containing 0À8% antimony is alloyed to opposite sides of the body to form an nin structure. Alternatively, a group III impurity such as aluminium may be alloyed to the body to form a pip device. In another embodiment, a gallium arsenide body is doped with copper to provide the deep level impurity and tin or manganese is alloyed to opposite faces of the body to form an nin or pip structure respectively. Germanium may also be used as the semi-conductor material.
Patent GB-696253-A (GB)
Title: An improved device for eleminating back-lash in toothed gearing
IPC: F16H57/00
Filed: 1951-07-21
Abstract: 696,253. Toothed gearing. NOBLE & LUND, Ltd., and WALKER, L. Nov. 7, 1951 [July 21, 1951], No. 17339/51. Class 80 (i). To take up backlash a tooth gear 6 meshing with another gear 5 has a separate ring portion 7 which is movable relatively to the gear 6 in a circumferential direction by means of spring pressed plungers 12, 13 in a diametrical bore of the gear 6 engaging, by means of inclined portions 12a, 13a at their ends, corresponding inclined recesses in the toothed ring portion 7.
Patent GB-858976-A (GB)
Title: Mineral dressing in dense liquids
IPC: B03B5/30
Filed: 1958-05-30
Abstract: 858,976. Washing granular materials. PATRMAN, F. May 30, 1958 [June 1, 1957], No. 17341/58. Class 82(2) In a mineral separation process using a heavy-liquid separating medium, the mineral before entering the separating bath is first washed with water and then with a rinsing liquid of a higher specific gravity than water. With several separating baths A and E (Fig. 1) the mineral is first washed with water in Section 1 of screen 10 and then successively washed on Sections 11 and 111 with rinsing liquid from bath E and bath A respectively, the rinsing liquid in Section 111 having a higher specific gravity than that in Section 11. Pumps P1 and P2 pump the rinsing liquid from the baths to the screen and each succeeding rinsing liquid has a higher specific gravity than the preceding rinse.
Patent GB-146181-A (GB)
Title: Improved manufacture of tanning agents
IPC: C14C3/02
Filed: 1920-06-25
Abstract: Tanning-agents are prepared by treating acid resin or acid tar from mineral oil refining with monochromates, e.g. of barium, sodium, or potassium, in amount equivalent to the free sulphuric acid present. Or the sulphuric acid present may be neutralized by hydroxides or carbonates of chromium, aluminium, or iron; and, if desired, additional quantities may then be added.  Or the acid resin or acid tar is first treated with a monochromate, and then with an hydroxide or carbonate of chromium, aluminium, or iron. Specification 146,167 is referred to.  Reference has been directed by the Comptroller to Specifications 19502/90, 8069/13, and 146,167.ALSO:Acid resin or acid tar from mineral oil refining is treated with monochromates, e.g. of barium, sodium, or potassium in amount equivalent to the free sulphuric acid present.  Or the acid present may be neutralized with hydroxides or carbonates of chromium, aluminium or iron.  Or the acid resin or acid tar is first treated with a monochromate, and then with an hydroxide or carbonate of chromium, aluminium, or iron. Specification 146,167, [Class 2 (iii), Dyes &c.] is referred to. Reference has been directed by the Comptroller to Specifications 19502/90 [Class 2, Acids and salts, Organic &c.], 8069/13, and 146,167, [Class 2 (iii), Dyes &c.].
Patent GB-637319-A (GB)
Title: Improvements in or relating to pulverised fuel supply systems
IPC: F23K3/00
Filed: 1947-07-01
Abstract: 637,319. Pneumatic conveyers. THOMPSON WATER TUBE BOILERS, Ltd., J., and O'REILLY J. P. July 1, 1947, No. 17360. [Class 78 (i)] A pulverised fuel distributor for distributing a gaseous stream of pulverised fuel passing along a trunk or to a junction comprises a deflector member 5 mounted internally of the trunk on a wall thereof and having a width less than the corresponding dimension of the trunk ; and means 12 for adjusting the member between a position in which it lies flat against the internal wall and a position in which it projects inwards therefrom so as to modify the fuel distribution across the trunk. As shown, air conveying powdered coal passes up rectangular trunk 1 and divides into two branches 1a, 1b. Sets of fingers 5, 6 projecting into the trunk are secured to axles 7, 8, which are journalled at each end thereof in the trunk and are each set at the required angle by a handle 12, which is fixed on the end of the axle and has a pin 21 moving in the slot 22 of quadrant 23 fixed to the trunk and has a nut 20 for securing the pin to the quadrant. A similar double set of fingers 15, 16 is arranged at right-angles to the first set described and is spaced therefrom. Each double set of fingers is mounted in a separate section 3 or 4 of the trunk. The fingers may be flat, or twisted, or (Fig. 5) may be flat-faced hollow members 35 ; or they may be slid through slots in the wall ; or may be telescopic, and may be set angularly and automatically by means sensitive to the fuel load in the trunk. The fingers of one set may be staggered relative to the fingers of an opposite set or one set of fingers only may be used and these fingers may be independently rotatable on their axle or may be collapsible like a fan.
Patent GB-1433526-A (GB)
Title: Jacketed wire and method of producing the same
IPC: H01B7/00
Filed: 1973-04-11
Abstract: 1433526 Producing composite wires G RAU 11 April 1973 [13 April 1972] 17462/73 Heading B3A [Also in Divisions C7 and H1] In a method of producing a composite wire in which a metallic core 1 is placed in a metallic jacket 2, the core and jacket are subjected to plastic shaping and annealing, and a gas is allowed to permeate the jacket to cause a gasmetal reaction at the jacket/core interface to produce an insulating layer 3. The metal which takes part in the gas-metal reaction may be from the core, the jacket or an intermediate layer previously provided at the interface. In a preferred embodiment a silver jacket is reduced on to a core of copper-nickel alloy, and the composite wire is annealed in air or oxygen for 3 hours at 800 degrees, an oxide layer being formed at the surface of the core. Alloys of nickel and chromium may be alternatively used for the core, especially a nickel alloy including aluminium to which small amounts of calcium and/or cerium may be added. The jacket may be copper, and the gas may be nitrogen or may cause a carbon reaction to occur.
Patent GB-618409-A (GB)
Title: Improvements in or relating to the preservation of oleaginous materials from oxidative rancidity
IPC: C11B5/00
Filed: 1944-09-13
Abstract: Fats, fatty oils and oleaginous materials contain as an anti-oxidant for preventing rancidity, a small proportion of nordihydroguaiaretic acid, i.e. b -g -dimethyl, a -d -bis-(3.4-dihydroxyphenyl) butane or a plant extract containing this compound.  Fatty materials specified comprise butter, tallow, shortenings, particularly lard, wool fat, cotton seed oil, corn oil, soya bean oil, fish liver oils, edible hydrogenated animal and vegetable oils, meat, fish and other fat-containing foods, cosmetics and other fatty pharmaceuticals. The additive may be dissolved in alcohol as a carrier. Specification 618,406 is referred to.ALSO:Butter, shortenings &c. contain as an antioxidant for preventing rancidity, a small proportion of nordihydroguaiaretic acid i.e. b  8 dimethyl,  -8-bis (3.4-dihydroxyphenyl) butane or a plant extract containing this compound.  The additive may be dissolved in alcohol as a carrier Specification 618,406, [Group III], is referred to.ALSO:Meat, fish, and other fat-containing foods, cosmetics and other fatty pharmaceuticals contain as an anti-oxidant for preventing rancidity, a small proportion of nordihydroguaiaretic acid, i.e. b -g  dimethyl, a -d -bis (3.4.-dihydroxyphenyl) butane or a plant extract containing this compound.  The additive may be dissolved in alcohol as a carrier.  Specification 618,406 is referred to.
Patent GB-145567-A (GB)
Title: Improvements in self-lubricating bearings
IPC: F16C33/04
Filed: 1920-06-29
Abstract: 145,567. Bound-Brook Oil-Less Bearing Co., [formerly Graphite Lubricating Co.], (Assignees of Bache, L. S.). Aug. 5, 1914, [Convention date]. Channels in cylindrical bcarings.--A cylin drical bearing for shafts, spring shackles &c. is formed with two or more sets of helical grooves packed with graphite or similar lubricant, the various sets being relatively offset as shown in Fig. 1. The grooves 2. 3 which are of long pitch, do not reach the ends of the bearing, and their inner ends overlap, as shown. As shown in Fig. 4, the grooves 11 are slightly bevelled at the sides, but the remaining grooves are considerably bevelled at one side so that the sides 11<a>, 12 are substantially vertical. The lubricant is pressed firmly into the grooves and hardened by heat.
Patent GB-1068883-A (GB)
Title: Hypocholesterolaemic compositions
Inventor: WIGGINS LESLIE FREDERICK
IPC: A61K31/575
Filed: 1964-04-29
Abstract: Antihypercholesterolaemic compositions comprise an antihypercholesterolaemic steroid e.g. androsterone or b -sitosterol and 3-methyl salicylic acid or a pharmaceologically acceptable salt thereof.  They may be in conventional forms suitable for oral or rectal administration e.g. tablet, capsule, cachet, suppository or liquid form.