baber/WOPTO huggingface dataset:
Patent GB-1378578-A (GB)
Title: Temperature compensated acoustic surface wave resonator
IPC: H03H3/10
Filed: 1972-04-06
Abstract: 1378578 Surface wave resonators, oscillators PLESSEY CO Ltd 9 March 1973 [6 April 1972] 15789/72 Headings H3U and H3F An acoustic surface wave resonator, used in an electronic oscillator, has its resonant frequency stabilized by maintaining the YX or ST cut quartz piezoelectric substrate 1 at a substantially constant temperature by means of A.C. or D.C. supplied heat dissipative conductor member 4, which may be of barium titanate having a sharp change in its resistance at the desired temperature, or whose current may be controlled by a current regulator (not shown) in the circuit between terminals 5, 6. itselfcontrolled by a temperature sensitive device (not shown) monitoring substrate temperature. Temperature characteristics for YX and ST cut quartz are discussed, such cuts being used for frequencies 93 resp. 180 MHz.
Patent GB-840341-A (GB)
Title: Process for the manufacture of di-imidazole derivatives
Filed: 1957-05-17
Abstract: Compounds which, in the form of the free bases, have the formula <FORM:0840341/IV(b)/1> where A is a benzene nucleus of which two vicinal carbon atoms are bound to the two nitrogen atoms, and which may contain halogen, alkyl or alkoxy substituents, and R is hydrogen or alkyl, are prepared by heating an o-diamine of the benzene series in which one amino group is primary and the other is primary or is monoalkylamino, or a salt of such an amine, with an acid of formula HOOC. (CHOH)4.COOH or a functional derivative thereof, in the presence of a dilute aqueous mineral acid, e.g. 5-50% H2SO4, 5-20% HCl or 15-50% H3PO4. The compounds form salts with such inorganic acids, salts with HBr also being mentioned.  A suitable temperature range for the reaction is 80-120 DEG  C.
Patent GB-1187002-A (GB)
Title: Production of Aliphatic Phosphonic Acids.
Inventor: RANDALL DAVID IRWIN
IPC: C07F9/38
Filed: 1968-04-02
Abstract: 1,187,002. Production of aliphatic phosphoric acids; 1,2-dichloroethane. GAF CORP. 2 April, 1968 [6 April, 1967], No. 15882/68. Heading C2C. [Also in Division C1] An aliphatic phosphonic acid is prepared by contacting an ester of the aliphatic phosphonic acid of the formula R 1 P(O)(OR 2 )(OR 3 ), where R 1 , R 2  and R 3  are alkyl or beta-haloalkyl containing not more than 6 carbon atoms, the ester being stable above 140‹ C., with anhydrous hydrogen bromide or hydrogen chloride above 140‹ C. and below the decomposition temperature of the ester. Examples describe the preparation of 2-chloroethylphosphonic acid and 2-chloropropylphosphonic acid from the corresponding bis - (2 - chloroalkyl) - beta - chloroalkylphosphonates. 1,2-Dichloroethane is produced as by-product in the production of 2-chloroethylphosphonic acid from bis-(2-chloroethyl)-beta-chloroethylphosphonate using hydrogen chloride, and the 2-chloroethylphosphonic acid can be reacted with phosphorous pentachloride to produce 2- chloroethylphosphonyl dichloride.
Patent GB-515312-A (GB)
Title: Improvements in or relating to gas-cookers
IPC: F24C15/10
Filed: 1938-05-28
Abstract: 515,312. Gas cooking-stoves; hot-plates; gas supply to burners. MAIN Ltd., R. & A., and WORTLEY, G. W. May 28, 1938, No. 15994. [Classes 75 (i) and 126] A hot-plate 27 for a gas-cooker is cast as a unit with apertures 28 above the hot - plate burners, and a number of upstanding ribs 31 around the apertures to support cooking utensils. These ribs may extend partly over the apertures 28. An aperture 29, with a removable cover-plate 9, may be provided above the grilling device. The top of the hot-plate is concave between the ribs. The hot-plate rests, near its rear and side edges, on the top edge 21 of a rectangular frame attached to the top of the cooker, and is prevented from making lateral movement by interengaging parts. The rectangular frame comprises upright side pieces 11 formed at the bottom with an inwardly directed flange 12. A gas pipe 15 is covered by a cornice plate 14, lugs 16, 17 on the pipe 15 and plate 14 being connected by screws 18 and lugs 24 on the pipe abutting against lugs 23 on the rectangular frame. The handles of gas cocks extend through openings in the frame. The burners each rest at one end on an injector nozzle projecting from the pipe 15 and at 'the other end an a cross-bar integral with or attached to the frame 11. Gas is supplied from the pipe 15 through a gas cock 43, Fig. 7, a filter-chamber 44, and a thermostatically controlled valve 46, to the oven burner 54. The filter chamber is composed of two rotatable parts, one carrying the inlet 47 and the other the outlet 48, which are eccentrically arranged. By rotating the two parts, the relative eccentricity of the inlet 47 and outlet 48 can be varied According to the Provisional Specification, the filter chamber comprises a cylindrical box open and screw-threaded internally at one end to receive a correspondingly threaded plug, the box at its closed end and the plug having eccentrically arranged bosses for connection with the gas pipes. The Provisional Specification also states the taps may be provided with removable thumb pieces which may be of relatively brittle heat-insulating material such as synthetic resin and are provided with niting washers engaging a niting slot in the injector bodies. A hinged lid for the top of the gas cooker and uprights for a plate rack may be provided.
Patent GB-748078-A (GB)
Title: Improvements in mechanical energy storing devices or power accumulators
IPC: F03G5/00
Filed: 1952-06-26
Abstract: 748,078. Turning-gear. MOULTON,A. E'. June 25, 1954 [June 26, 1952], No. 16097/52. Class 7(5) [Also in Group XXVI] The engine starter motor shown comprises a column of interconnected annular rubber elements 3 assembled on a metal sleeve 1 keyed to a shaft 2, each end face of each element being bonded to a metal disc 4 or 5 the disc 4 of each element being extended inwardly to ride on the sleeve. Both discs have outward extensions (either 6 or 7) which enable adjacent discs to be riveted together as at 8. The shaft 2, to which is connected a crank handle, or, in the case of aircraft engines, a reciprocating handle fitted with suitable means such that a rotary motion may ensue, carries, keyed to the sleeve 1, a driving pinion 10. This meshes with a gear wheel (not shown) on a lay-shaft which a,lso carries a small pinion (net shown) which engages a gearwheel 11 freely mounted, through ball-bearings 13, on the sleeve 1. This wheel 11 is bolted at 14 to the disc 5 of the first element. 3. The disc 4 of the last element 3 is bolted at 15 to an output pinion 16 freely mounted on the sleeve. In use rotation of shaft 2 ensures the winding-up of the elements 3 rotation of the pinion 16 being prevented by a spring-urged pawl. Subsequent release of this pawl causes the motor to operate, swing back of the shaft 2 being prevented by a ratchet- and-pawl device which engages the gear wheel 11. In an alternative embodiment the elements 3 may be plain discs their metal discs 4, 5, extending peripherally therefrom to engage a cylindrical housing which acts as a guide to maintain the elements in axial alignment and also as a rotational bearing for the metal discs. Adjacent plates 4 5. may, instead of being riveted together, have co-operating formations adapted to transmit torque while permitting disengagement and relative axial displacement for replacement of individual elements 3. The gearing connecting pinion 16 with the engine may include an over-running clutch. The elements 3 are preferably adjustably compressed axially such as by nuts 17. Thrust bearings or tie-bolts may be used forthis purpose when plain disc elements are employed.
Patent GB-240252-A (GB)
Title: Improvements relating to cathodes for vacuum electric devices
IPC: H01J9/04
Filed: 1924-07-07
Abstract: 240,252. Cachemaille, A. S., (Westing- house Lamp Co.). July 7, 1924. Vacuum tubes.-A cathode is formed by coating a supporting member such as a platinum-iridium strip or filament with an inorganic suspension of one or more alkaline - earth-metal carbonates, and heating it so as to cause the coating to adhere to the member without substantial decomposition of the carbonates. A suspension of a mixture of barium and strontium carbonates is preferably used, and a soluble salt of an alkaline-earth metal such as barium chloride or nitrate may be added to obtain a more firmly adherent coating. For coating a 3 mm. round wire or a narrow strip, a mixture of 9 gr. of powdered barium carbonate and 10 gr. of powdered strontium carbonate is ground finely in a mortar, and a suspension which is not subject to rapid settling is formed by stirring and adding slowly 18 cc. of water; 0.5 to 2 gr. of barium chloride or nitrate may be added. For coating a wide ribbon a more dilute suspension may be used. The coating may be effected by passing the filament 1 from a spool 2 over a grooved wheel 3 dipping in the suspension 4, and the coating is baked on the filament in passing through an electrically-heated tube furnace 6 through which a stream of carbon dioxide is passed. The spool 11, on which the wire is wound, may be transposed with the spool 2 and the operation repeated several times to obtain a coating of the desired thickness. A filament of platinum-iridium should be cleaned by heating in the furnace before passing through the suspension. The coated filament is mounted in a bulb and heated by passage of current to convert the carbonate into oxide either during the pumping operation or after sealing off. In the latter case magnesium or aluminium or both is attached to the anode and vaporized in order to clean up the carbon dioxide evolved. Or the filament may be heated in am inert atmosphere before mounting in the bulb, so as to convert the carbonates into oxides.
Patent GB-1022252-A (GB)
Title: Improvements in and relating to resins
Inventor: SMITH JOHN LIBERTY
IPC: C08G8/32
Filed: 1962-04-28
Abstract: Alkali-soluble resins suitable for coating compositions are obtained by (a) reacting a drying or semi-drying oil with sufficient maleic anhydride or maleic, fumaric or itaconic acid to give a product soluble in aqueous alkali; (b) reacting the product with a phenol; and (c) reacting the product of (b) with an aldehyde. Specified reactants are:-drying oils cottonseed, soybean, corn, oiticia, tung, linseed and pirella oils; phenols phenol, cresol, resorcinol, catechol and alkylphenols; aldehydes formaldeydehyde and acetaldehyde.  Each step is preferably conducted in an inert atmosphere. A suitable catalyst for step (b) is oleum.  In the specific example the catalyst for step (c) is ammonia.  The final product may be dissolved or dispersed in aqueous ammonia or a volatile organic base such as methylamine or morpholine, optionally with filler and pigments to give a coating composition.  In the specific example a resin is prepared from tung oil, maleic anhydride, phenol and formaldehyde and a solution thereof in diethylaminoethanol is mixed with a dispersion of red iron oxide and is painted on to steel panels to give after heating at 160 DEG  C. for 30 minutes, a hard flexible coating resistant to hot water and salt water spray.ALSO:Steel panels are coated with a composition containing an alkali-soluble resin obtained by (a) reacting a drying or semi-drying oil with sufficient maleic anhydride or maleic, fumaric or itaconic acid to give a product soluble in aqueous alkali; (b) reacting the product with a phenol; and (c) reacting the product of (b) with an aldehyde.  Specified reactants are: drying oils cottonseed, soybean, corn, oiticia, tung, linseed and pirella oils; phenols phenol, cresol, resorcinol, catechol and alkylphenols; aldehydes formaldehyde and acetaldehyde.  Each step is preferably conducted in an inert atmosphere.  A suitable catalyst for step (b) is oleum.  In the specific example the catalyst for step (c) is ammonia.  The final product may be dissolved or dispersed in aqueous ammonia or a volatile organic base such as methylamine or morpholine, optionally with filler and pigments to give a coating composition.  In the specific example a resin is prepared from tung oil, maleic anhydride, phenol and formaldehyde and a solution thereof in diethylamino-ethanol is mixed with a dispersion of red iron oxide and is painted on to steel panels to give after heating at 160  DEG C. for 30 minutes, a hard flexible coating resistant to hot water and salt water spray.
Patent GB-110048-A (GB)
Title: Improvements in Watch Protectors.
Inventor: STRONG EBENEZER GEORGE
IPC: G04B37/00
Filed: 1916-11-15
Abstract: 110,048. Strong, E. G. Nov. 15, 1916. Watch bracelets.-A watch cover or protector made by stamping a single piece of sheet metal is provided with loops a shaped to spring over and grip the watch case. The loops may be provided with outwardly bent ends to enable the wristlet strap to be passed through them.
Patent GB-312667-A (GB)
Title: Process of treating ores
IPC: C22B19/38
Filed: 1929-05-28
Abstract: 312,667. Folliet, A., and Sainderichin, N. May 30, 1928, [Convention date]. Rotary furnaces.-In the reduction of volatile metals such as zinc, the ore is charged from a hopper 2 into one end of a rotary furnace 1, and highly heated air is admitted to the other end from a pipe 3 provided with tangential nozzles 3<1>. Coal is fed from a hopper 4. The vapours evolved pass to a condenser 6 and residues are discharged at 5.
Patent GB-469853-A (GB)
Title: Improvements in foundation garments
IPC: A41C1/00
Filed: 1936-06-12
Abstract: 469,853. Foundation garments. THORNTON, A. A. (Gossard Co., H. W.) June 12, 1936, No. 16431. [Class 141] [Also in Group IX] A foundation garment of the girdle, combination girdle and brassiere, or pantie girdle type, is made wholly or in part from a known two-way, stretch fabric, Figs. 8 and 9, comprising elastic threads 2 running in one direction, and inelastic threads 4 wrapped around the elastic threads, and extending from one to the other in staggered relation, the fabric being so arranged in the garment that the elastic threads run only in a horizontal direction. In one form, Fig. 6, the garment is provided with an inserted front panel 13 possessing only a vertical stretch, the directions of stretch of this panel, and of the remainder of the garment being indicated by arrows. In another form, Fig. 16, the garment is provided with an inserted stiffened front panel 22 which is made longer than the adjacent edges of the elastic portion of the garment when in unstretched condition, so that the garment will assume a smooth appearance on the body. In another modification, the front panel whether of inelastic material or of material possessing only a vertical stretch, is superimposed upon the material of the garment. In a further modification, the garment is provided with a superimposed front panel of two-way stretch material similar to that of the garment.
Patent GB-889672-A (GB)
Title: Improvements in continuous drying apparatus including a vibrating helical conveyor
IPC: F26B17/26
Filed: 1960-05-10
Abstract: 889,672. Drying apparatus. HANSEN, F. May 10, 1960 [May 29, 1959], No. 16493/60. Class 34(2) A continuous drying apparatus provided with a vibrating helical conveyer comprising a conveyer tower for causing the material to be treated to travel through the apparatus characterized in that the device for heating the gas to be used for drying and a collecting chamber for the vapours evolved during the drying, are disposed on the inside of the conveyer tower concentrically therewith. Granulated or finely divided material to be dried is upwardly conveyed through a rigid casing 1, 1a, 1b, by a helical gutter 4 on a helical conveyer 2 comprising a conveyer tower 3 formed of a tube which is vibrated by a driving device 9 and springs 6. The drying means are concentrically mounted within the tower 3 and comprise a central chamber 15 heated by a fluid heated tube 18 therein. Drying gas is fed through a conduit 17 into the chamber 15 to escape from the base into a surrounding transfer chamber 19, from where it passes through perforations 21 in a top cover to an external chamber 23 between the tower and casing. A tubular partition 22 in the tower defines an annular chamber 25 which forms a collecting chamber for the gas mixed with vapours evolved during drying which are exhausted through holes 30 extending parallel to and above the upper level of the material travelling helically along the gutter by a fan 28. The wet material is fed to the base of the tower from a hopper 11 by an Archimedean screw 10 and the dried material flows from the upper end of the gutter into an outlet conduit 13 which does not vibrate into a fluid-tight collecting vessel 14.
Patent GB-1185073-A (GB)
Title: Improvements in or relating to Pulse Circuits Utilising Two-Valley Semiconductive Devices
Inventor: UENOHARA MICHIYUKI
IPC: H04J3/00
Filed: 1967-04-11
Abstract: 1,185,073. Semi-conductor switching circuits; pulse modulation circuits. WESTERN ELECTRIC CO. Inc. 11 April, 1967 [12 April, 1966], No. 16537/67. Headings H3T and H4L. In a circuit comprising a two-valley semiconductor device 31, a bias source 32 connected to bias the device to a point below the threshold voltage for oscillation generation and below the voltage necessary to sustain oscillations once initiated, an output circuit 34, and means 33 for applying input signals to the device, the input signals temporarily and repeatedly have a voltage magnitude sufficient when added to the bias voltage to exceed the threshold voltage which causes the device to oscillate so that a pulse train is obtained in the output circuit. As shown the circuit operates a pulse regenerator or an encoder for translating an analog signal into a pulse position modulation train. The semi-conductor device which may be gallium arsenide is biased below its threshold voltage by the D.C. source 32. When the input pulses or analog signal and bias voltage exceed the threshold voltage (VT, Fig. 4, not shown), of the device oscillations are produced by the device and the average current (I AV ) through the device falls until the combined input signal and bias voltage fall below the threshold voltage so that the average current increases. The output current is inverted with respect to the input signal and may be taken from the load connected in series or parallel with the semiconductor device. The input pulse train may be supplied from the output stage of an amplifier or an antenna used to pick up the radiated signal pulses. The lower the product nL (where n is the charge carrier density in the device and L is the length of the device) the more nearly the voltages at which oscillations in the device begin and cease become equal. The difference between these voltages can also be minimized by minimizing the circuit reactance. Conversely the difference can be increased by increasing nL. The oscillatory or steady components of the output signal may be removed by filtering and strip lines, coaxial cables or wave guides may be used to connect the circuit components.
Patent GB-646787-A (GB)
Title: Improvements in or relating to pipe couplings
IPC: F16L19/04
Filed: 1947-06-25
Abstract: 646,787. Pipe joints. BROCKWAY CO. June 25, 1947, No. 16777. Convention date, Feb. 7. [Class 99(i)] A coupling body 10 has a conical projection 15 adapted to flare the end of the pipe 24 when the latter is drawn on to it, and a connector comprises a nut portion 26 and a sleeve portion 27 connected by a frangible web 32, the shape of the engaging parts of the body, sleeve and nut being such that when the nut is screwed into the body the web is broken, the sleeve is contracted on to the pipe, and continued operation of the nut then forces the pipe end on to the flare-forming projection. The connector has an external groove 30, Fig. 5, in the sleeve portion, and an internal groove 31 in the nut portion, both adjacent the frangible web, the bases 36, 37 of the grooves being inclined, curved or so formed that after fracture of the web they contact to force the end of the sleeve into the pipe. The nut portion is externally threaded and in a modification has a cylindrical end portion 53, Fig. 9, which engages the bore 41 of the body to resist expansion of the sleeve. Specification 646,788 is referred to.
Patent GB-1106136-A (GB)
Title: Improvements in or relating to electromagnetic clutches
IPC: F16D27/12
Filed: 1966-04-18
Abstract: 1,106,136. Change-speed and reverse gear; clutch/brake combinations. VYZKUMNY USTAV BAVLNARSKY. 18 April, 1966 [25 May, 1965], No. 16818/66. Headings F2D and F2L. A reversing gear, change-speed gear, or clutch/brake combination comprises toothed, friction or sprocket wheels 4, 7 rotatably mounted on stationary hubs 5, 8 and having toothed or friction clutch surfaces 21 adjustably mounted thereon by nuts 19, 20 and engageable by corresponding clutch surfaces 22 provided on a driven wheel 1. Wheel 1 is rotatably mounted on a push bar 2 which is provided with collars 13 engaged by armatures 14, 15 of stationary magnets 11, 12. The armatures 14, 15 are urged apart by a spring 16, and the wheel 1 is centred, when magnets 11, 12 are de-energized, by springs 23, 24. When used as a reversing gear, wheels 4, 7 are rotated in opposite directions, as a change-speed gear these wheels are rotated at different speeds, and as a clutch/ brake combination one gear is held stationary.
Patent GB-1411663-A (GB)
Title: Liquid level gauges of the reflective type
IPC: G01F23/02
Filed: 1973-04-09
Abstract: 1411663 Liquid level gauge KLINGER AG 9 April 1973 [7 April 1972] 16875/73 Heading G1H In a liquid level gauge of the reflective type in which a returning element 10, provided with a chamber 12 having apertures 13 for the liquid the level of which is to be measured, is pressed by screws 23 engaged in a plate or plates against a glass 14 having a series of prismatic grooves 15 on one face and a flat surface on the other the arrangement is such that the various components are symmetrical shaped and so arranged that should the contact between the glass 14 and the faces 19' or 20' become defective the components can be placed in reversed contact.
Patent GB-1315287-A (GB)
Title: Thieno-2,3-e 1,4 diazepine compounds methods for their production and pharmaceutical compositions containing them
IPC: C07D495/04
Filed: 1972-04-12
Abstract: 1315287 Thienodiazepines YOSHITOMI PHARMACEUTICAL INDUSTRIES Ltd 12 April 1972 [14 April 1971] 16952/72 Heading C2C Compounds of the general formula (X = H, halogen, Me, OMe, CF 3 ; R<SP>1,2</SP> = H, C 1-4  alkyl or R<SP>1+2</SP> = -(CH 2 ) 4 -; NR<SP>3</SP>R<SP>4</SP> = NH 2 , C 1-4  alkylamino, di-(C 1-4  alkyl)amino, 1- pyrrolidinyl, piperidino, morpholino, 4-methyl- 1-piperazinyl) and their acid addition salts are prepared by reacting a compound of the formula with R<SP>3</SP>R<SP>4</SP>NH, optionally followed by salt formation. The above compounds are psychotropics, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1388034-A (GB)
Title: Membranes for reverse osmosis
IPC: B01D71/16
Filed: 1972-04-12
Abstract: 1388034 Semi-permeable membranes UNITED KINGDOM ATOMIC ENERGY AUTHORITY 5 April 1973 [12 April 1972] 16968/72 Heading B5B [Also in Divisions C3 B1 and B2] A semipermeable membrane is prepared from a blend of cellulose acetates, at least one having an acetyl value of less than 40À9%, at least one having an acetyl value greater than 41À4%, the proportions being such that the blend has an average acetyl value of from 40À9% to 41À4%. The membranes are obtained by casting from a solution containing a mixture of acetone, dioxan and formamide, preferably on to a porous substrate. After evaporation for a short while in air, the membrane and substrate are passed to a gelling bath cooled to 0-2 C. after a short period in which it is then heat-treated at 60-85 C.