baber/WOPTO huggingface dataset:
Patent GB-556740-A (GB)
Title: Improvements in or relating to bearing surfaces for tapered rotary valves of engines and pumps
IPC: F01L7/08
Filed: 1942-03-16
Abstract: 556,740. Valves. ASPIN, F. M. March 16, 1942, No. 3415. [Class 7 (vi)] [Also in Group XXIX] A housing for a tapered rotary valve h for engines; pumps, &c., for example as described in Specification 463,412, comprises a liner a formed externally with stepped surfaces f engaging with an interference fit in a corresponding stepped recess in' the surrounding casing e. The liner may be pressed into the recess, or shrunk therein by heating the casing and freezing the liner. The valve or the liner may be provided with a wearing surface d, either electrically, or by spraying, casting, brazing &c. The casing may be of magnesium or aluminium alloy ; the liner of phosphor bronze, steel, or cast iron ; and the coating d of lead-bronze, chromium &c. The stepped surfaces may be slightly tapered or barrelshaped.
Patent GB-449414-A (GB)
Title: Improvements in and relating to pivoted windows, ventilators and the like
IPC: E06B3/50
Filed: 1935-02-02
Abstract: 449,414. Pivoted - sliding sashes; ventilators. MACKENZIE, K. D., c/o Braby & Co., Ltd., F., Petershill Road, and MARCHBANK, J., 165, Croftside Avenue, Croftfoot, both in Glasgow. Feb. 2, 1935, No. 3490. [Classes 20 (iii) and 137] A pivoted-sliding sash 11, or sashes, is hinged at one edge to one, or both, of the pivoted sashes 1, 2, of the kind which are connected by links 6 pivoted to the frame and slidably pivoted to the sashes. The pivots 12 of the sash 11 may work in slots or between flanges of the frame and a wedge 15 may be provided to cause a tight closing movement. Handles 9 may be provided on the lower of the pivoted sashes.
Patent GB-1086583-A (GB)
Title: Improvements in fire extinguishing compositions
IPC: A62D1/00
Filed: 1965-01-27
Abstract: Fire-extinguishing compositions comprise a suspension of K or K and Na salts in fine particle form in an aqueous medium containing a suspending agent which is present as a very finely divided solid, e.g. a clay, bentonite MgCo3 and/or a water-soluble salt, e.g. MgCl2 or an alkali metal silicate or metaphosphate.  The preferred suspended salts are KHCO3 and K2CO3.
Patent GB-1020782-A (GB)
Title: Purification of viral-inhibiting substance
IPC: C07K14/555
Filed: 1963-01-29
Abstract: A viral inhibiting substance (VIS) is obtained by adding a protein-precipitating agent to a final concentration of 1 to 3 per cent of a VIS-containing allantoic fluid, adjusting the supernate to pH 6 to 8 and then adding a salt of cobalt, zinc, calcium, mercury, strontium or barium to coprecipitate the VIS.  The protein-precipitating agent may be perchloric acid, trichloracetic acid, sulphosalicylic acid or tetrametaphosphate.  The metal salt is a cobalt, zinc, calcium, mercury, strontium or barium salt of acetic acid, glycine, lactic acid, propionic acid or hydrochloric acid.  The VIS-containing allantoifluid is preferably obtained from embryonated eggs, e.g. hen's eggs which have been incubated 9 to 12 days.  The embryonated eggs are infected allantoically with live influenza virus, e.g. A, B or C influenza virus or measles virus, and incubated for 72 to 120 hours at 36 to 37 DEG C., chilled and the allantoic fluid containing VIS is withdrawn.  According to the example, (a) 0.15 N HClO4 is added to egg allantoic fluid (influenza A virus inoculated) at 5 DEG C. and the precipitate is discarded; (b) supernate is adjusted to pH 7 to 8 and 0.02 M zinc acetate is added to form a precipitate and the resulting supernate is discarded; (c) the zinc precipitate is dissolved by adding 0.2 N HCl to pH 2-3 at 5 DEG C. and the insolubles are discarded; (d) the supernate thus obtained is dialyzed against 0.9 per cent sodium chloride, the pH adjusted to 7.0 to 7.2 and zinc acetate added; (e) the zinc precipitate thus formed is once more dissolved by adding 0.2 N HCl to a pH of 2.0 to 3.0 and the solution dialyzed against 0.9 per cent sodium chloride to remove zinc ions; (b) the solution is further dialyzed against 0.01 M phosphate at pH 6.0 and applied to a column of carboxymethylcellulose equilibrated with 0.01 M sodium phosphate at pH 6.0, 0.01 M phosphate buffers of pH6 to 8 with increasing NaCl content to 0.1 M NaCl being added to the column; (g) elution is by means of 0.01 M phosphate of pH 8.0 containing 0.1 M NaCl; (h) the zinc acetate precipitation step (d) is repeated on the eluate; (i) the solubilisation of the zinc precipitate, dialysis and rechromatography on carboxymethylcellulose of steps (e), (f) and (g) are repeated; (j) further concentration is by zinc precipitation and dialysis as in steps (d) and (e); finally (k) the clarified solution of VIS is subjected to zone electrophoresis on Pevikon C-870 block using 5-10 volts per cm. length of bed and a temperature of 0-15 DEG C. p
Patent GB-821420-A (GB)
Title: Improvements in or relating to digger teeth for earth-working apparatus
Inventor: LAUNDER ERNIE LLOYD
IPC: E02F9/28
Filed: 1956-02-06
Abstract: 821,420. Earth - working apparatus. TOOTH C.O., H. & L. Feb. 6, 1956, No. 3676/56. Class 68(1) In a digging tooth for earth-working apparatus X in which a tooth point B formed by a flat elongated plate 22 associated with a box structure 23 is detachably secured to the tapered nose portion 13 of a base member A by pressing deformable portions 34 of the box structure 23 into recesses C in the nose portion 13, each recess C has a depression 43 underlying the deformable portion 34 to facilitate engagement of the portion 34 with a tool D for forcing the portion 34 outwards clear of the recess to permit removal of the point B. The base member A is of rectangular cross-section and the nose portion 13 is of a complementary shape to that of the space formed between the plate 22 and the box structure 23. Preferably each recess consists of an annular conical surface 40, a shoulder 42, 43 and a conical surface 41. The tool D forms the subjectmatter of Specification 821,421 [Group XXII], which is referred to.
Patent GB-1166610-A (GB)
Title: Improvements in or relating to 16alpha,17alpha-Ethylene and Substituted Ethylene[3,2-c]Pyrazolo-Steroids
IPC: C07D231/54
Filed: 1967-01-25
Abstract: 1,166,610. 16α,17α-Ethylene and substituted ethylene[3,2-c]pyrazolosteroids. SYNTEX CORP. 25 Jan., 1967 [1 Feb., 1966], No. 3761/67. Heading C2U. Novel steroids of the formula (wherein Z is a single or double bond or a 6α,7α- CXY group, X and Y being H, Cl or F; R<SP>1</SP> is H, F or Cl; R<SP>2</SP> is H, Cl, F or CH 3 ; R<SP>3</SP> is H or Ph which may be F, NO 2  or OCH 3  substituted; R<SP>4</SP> is H, PO(OH) 2 , tetrahydropyranyl, or a hydrocarbon carboxylic acyl group of less than 12 carbon atoms which is optionally substituted; R<SP>5</SP> is OH or Cl, R<SP>1</SP> being Cl when R<SP>5</SP> is Cl; A and B are H, Cl, F, or C 1-4  alkyl; and D and E are H, Cl, F, Ph, C 1-4  alkyl, C 1-4  alkoxy, C 1-4  acyloxy or C 1 _ 4  haloalkyl; or A and B or D and E together are CH 2  or CF 2 ) are prepared from the corresponding #<SP>4</SP>-3-keto-steroids via their 2- hydroxymethylene derivatives by reaction of the latter with hydrazine or substituted hydrazines, the 21-OH group being temporarily protected e.g. as the tetrahydropyranyl ether. The 21-esters are prepared from the 21-ols by direct esterification or, in the case of the 21- phosphates, via the 21-mesylpxy and 21-iodo compounds. Starting materials of the formula are prepared by the methods disclosed in Specification 1,166,609, via the corresponding 3- keto- #<SP>4</SP>,<SP>16</SP> - dienes and the corresponding #<SP>5</SP>,<SP>16</SP>- 3 - ketals. In one preparation 11# - hydroxy- 17α,20; 20,21 - bismethylenediozypregn - 4 - en- 3-one (prepared from the free 17α,21-diol-20- one) is converted to the corresponding 4,6-diene, this is converted to the #<SP>4</SP> - 6α,7α - difluoromethylene compound, this is hydrolysed to 6α,7α- difluoromethylene - 11#,17α,21 - trihydroxypregn - 4 - ene - 3,20 - dione, this is converted to the 21-acetate, this to its 3,20-bissemicarbazone and this to 6α,7α-difluoromethylene-11#-hydroxy - 21 - acetoxypregna - 4,16 - diene - 3,20- dione. Similarly 9α - fluoro - 11#,17α - dihydroxy - 21 - acetoxypregn - 4 - ene 3,20- dione 3,20-bissemicarbazone is used in the preparation of the corresponding 4,16-diene. The steroids of the invention, which are stated to possess corticoid and anti-inflammatory properties, may be made up into pharmaceutical compositions.
Patent GB-372771-A (GB)
Title: Improvements in or relating to methods of and apparatus for treating sulphide ores
IPC: C22B1/02
Filed: 1931-02-06
Abstract: Sulphide ores such as zinc sulphide ore are dead roasted by subjecting the ore before it leaves the roasting furnace to a mixture of an oxidizing gas and sulphur dioxide produced by burning sulphur in an abundance of oxygen under conditions such that the temperature of the mixture is substantially above the temperature at which zinc sulphate dissociates, without any other extraneous heating means.  A roasting furnace is provided comprising a plurality of superposed hearths over which the ore fed from a hopper 14, Fig. 1, travels progressively from top to bottom and is propelled by air cooled rabbling arms 16 driven by a gear 20.  Molten sulphur heated in a steel vessel 22 by a steam coil 24 is led through steam-jacketed pipes 28 to sulphur burners 30.  Instead of a gravity feed a gear pump may be used to feed the sulphur to the burners.  Air is supplied from a blower 50 to the hollow shaft 18 and arms 16 and a portion of the heated air is passed down a pipe 54, Fig. 3, provided with a flow meter 156, a regulating valve 58 and branch pipes 56 leading to the several burners.  Each branch pipe 56 has a gauge 60 and a regulating valve.  Each burner is enclosed in a chamber 34, Fig. 4, and includes superposed pans 36 having overflow ports 40, the lowermost pan emptying into a catch basin 44 with an outlet 46. The gases from the burner should preferably contain 10-15 per cent of sulphur dioxide. The gases from the roasting operation may be treated directly for the recovery of sulphuric acid. <PICT:0372771/III/1> <PICT:0372771/III/2> <PICT:0372771/III/3>
Patent GB-493759-A (GB)
Title: Improvements in electrode boilers, water heaters and the like
IPC: F22B1/30
Filed: 1937-02-09
Abstract: 493,759. Heating water by passage of current. WILLIAMS, S. A., and ALLEN, F. J. C. Feb. 9, 1937, No. 3896. [Class 39 (iii)] Water is heated by the passage of current between fixed hollow electrodes 3, carried by insulated studs 4, anc outer electrodes 6, the current being regulatec by a movable insulating cylinder 7. The insulating cylinders of all the electrodes are connected to a common plate car ried by a rod 9 which is movable vertically. Ir the minimum load posi. tion, an insulating disc 10 closes the open end of the cylinder 7, and an insulating disc 11 closing the upper end of the electrode 3 contacts with an insulating disc 12 carried by the supporting plate. A small hole 13 relieves compression when the parts approach minimum load position. Passage of current between the electrodes in that position is prevented. Similar means may be applied to flat plate electrodes, Figs. 6 and 7 (not shown), and to arcuate electrodes, Figs. 8 and 9 (not shown). In another modification, Figs. 10, 11, 12 (not shown), the current is varied by moving the outer electrode, the inner electrode and insulating cylinder being fixed. When the relatively movable parts are close fitting a scraper ring may be provided to remove scale.
Patent GB-704589-A (GB)
Title: Improvements in cobalt containing alloys
Inventor: WEBBERE FRED J
IPC: C22C19/07
Filed: 1952-02-14
Abstract: A creep resistant alloy for use at high temperatures has the following composition: C 0.05-1.0 per cent. Mn 0.2-1.5 per cent. Si 0.2-1.5 per cent. Cr 16.0-24.0 per cent. Ni 12.0-15.0 per cent. Mo 75-11.0 per cent. B 0.01-0.5 per cent. Fe 0-10.0 per cent. Co the remainder.
Patent GB-735865-A (GB)
Title: Improvements in valve testers
Inventor: WILKINS SIDNEY RUTHERFORD
IPC: G01R31/25
Filed: 1952-02-14
Abstract: 735,865. Valve testers. AUTOMATIC COIL WINDER & ELECTRICAL EQUIPMENT CO., Ltd. Feb. 3, 1953 [Feb. 14, 1952], No. 3933/52. Class 37. In a valve tester of the type comprising a plurality of valve holders, one for each of the different base pin arrangements of the valves to be tested, all like numbered sockets A1, B1, C1, D1, E1 and so on, are progressively wired into wire loops of approximately equal length extending from a selector switch 10, which enables any of the sockets of the holders to be connected to any of the leads to the test circuit, each loop being closed back to the switch through a damping resistance R1 &c. (e.g. of 100-1000#), thereby preventing oscillation of the valve due to the distributed capacity and inductance of the inter valve holder wiring. Specification 510,098 is referred to.
Patent GB-647770-A (GB)
Title: Amplifiers having a controlled response curve
IPC: H03G5/08
Filed: 1947-02-11
Abstract: 647,770. Valve amplifying and receiving circuits. SOC. FRANCAISE RADIO-ELECTRIQUE. Feb. 11, 1947, No. 3984. Convention date, Feb. 12, 1946. [Classes 40 (v) and 40 (vi)] A negative feed-back amplifier comprises a feed-back circuit of constant impedance and an anode circuit, the impedance of which varies with frequency, the gain of the amplifier being varied by an adjustable control voltage. It is stated that filters of variable cut-off frequencies may thus be produced. A low-pass filter, Fig. 1, comprises a capacitor 5 and feed-back resistor 4, variations of control-grid potential changing the gain of frequency characteristic, Fig. 2 (not shown). A further amplifier may be added to give a more pronounced cut-off, Figs. 3 and 4 (not shown), and the capacitor may be replaced by an inductor to produce a high-pass characteristic. Variable selectivity may be obtained by replacing the capacitor with a tuned circuit, Fig. 7 (not shown). The cathode resistor may be shunted by a capacitor, Fig. 10 (not shown), to give a falling low and high-frequency response, Fig. 12 (not shown). The Specification as open to inspection under Sect. 91 also .comprises an impedance in the cathode circuit of a valve, Fig. 17 (Cancelled, not shown), which may take the form of a series resonant circuit to give a variable selectivity effect, Figs. 14 and 15 (Cancelled, not shown). This subject-matter does not appear in the Specification as accepted.
Patent GB-726438-A (GB)
Title: Improvements in or relating to instruments such as stethoscopes
Inventor: CARSBERG HENRY WILLIAM
IPC: A61B7/02
Filed: 1953-02-12
Abstract: 726,438. Stethoscopes. CARSBERG & SON (LONDON), Ltd., H. G. Dec. 3, 1953 [Feb. 12, 1953], No. 3985/53. Class 81 (2). In a stethoscope the relatively movable tubes 10, 11 carrying the ear-pieces 12, 13 are each secured, as by brazing, to a cover plate, the two cover plates 14, 15 being pivotally connected together by means of a boss 16 integral with the plate 15 and a screw 17 which passes through the plate 14 and screws into the boss 16. To prevent the plate 14 binding on the screw 17, the boss 16 is formed with a collar 18 on which the plate 14 is freelv rotatable and which is slightly thicker than the plate. The boss 16 is surrounded by a helical spring 19 having at least three turns and formed at its ends with hook arms 20, 21 which engage the points at which the tubes 10, 11 are secured to the cover plates and so urge the ear-pieces towards each other. The tubes and cover plates are preferably made of brass.
Patent GB-980224-A (GB)
Title: Process for preparing isoalkoxydiphenylamines
Filed: 1962-02-02
Abstract: An isoalkoxydiphenylamine is made by heating a hydroxydiphenylamine with an alcoholic alkali hydroxide solution in the presence of a secondary alkyl halide.  Suitable hydroxydiphenylamines are listed, the preferred amines being 4-hydroxydiphenylamine and 4,41-dihydroxydiphenylamine.  The secondary alkyl halide is preferably a chloride but bromides, fluorides or iodides may also be used. Suitable examples are given.  It is preferred to use sodium hydroxide but any alkali hydroxide may be used.  Methyl alcohol is preferred but ethyl, n-propyl and n-butyl alcohols are also given. The process takes place generally at temperatures from 100 DEG  to 140 DEG  C., preferably 110-130 DEG  C.  Examples describe reaction of 4-hydrodiphenylamine and 4,41-dihydroxydiphenylamine with 2-chloropropane in methanolic or ethanolic NaOH.  Comparative experiments illustrate the use of lower temperatures or aqueous instead of alcoholic alkali hydroxide solution.  Specification 443,779 is referred to.
Patent GB-1087191-A (GB)
Title: Electric terminal
IPC: H01R9/16
Filed: 1966-01-31
Abstract: 1,087,191. Mounting terminals. R. U. CLARK. Jan. 31, 1966, No. 4171/66. Heading H2E. A tubular insert for forming a hermetic seal when electrode 1 is mounted in an aperture in a panel or casing comprises a resilient barrel portion 6 and a hard flange portion 2. The insert may be made of silicone rubber, the barrel portion being compounded to have a Shore "A" hardness of 60 and the flange portion 90. The hardness and tracking resistance of the flange portion may be improved by incorporating 3 to 10% of powdered P.T.F.E. Alternatively the insert may be made of P.T.F.E., the flange portion being hardened by the incorporation of glass, ceramic, P.T.F.E., polyacrylonitrile or polyamide-imide fibres, or mats of polyamide-imide or perforated mats of polyimide. The flange portion 2 abuts a flange 4 on the electrode and when pressed into position, the resilient portion 6 is compressed and seals the aperture, and is retained under compression by push-on nut 3 or, as illustrated by Fig. 3 (not shown), by convolutions on the electrode stem. The barrel portion 6 is usually coated with potting compound, oil or varnish. Wire-wrapped connections may be made to notch 5.
Patent GB-103386-A (GB)
Title: Improvements in Motor Cultivators having Means for Driving the Tools Positively.
Inventor: FORRESTER HAROLD JOSEPH CHARLE
IPC: A01B33/00
Filed: 1916-03-22
Abstract: 103,386. Forrester, H. J. C., (Cleveland Motor Plow Co.). March 22, 1916. Ploughs; cultivators and harrows.-An agricultural machine, of the type in which a motor mounted on a tractor has a driving-connexion with rotary tools supported by a frame drawn by the tractor, has the tool frame flexibly connected to the tractor so that it may follow the contour of the ground over which it is drawn. The motor 8 drives a countershaft 9 connected by chain gearing with the ground-engaging roller 7 which supports the rear end of the tractor frame, the front end being supported by the roller 4, which is adapted to be turned in its mounting for steering purposes. The tool frame 16 - - 19 is connected to the tractor frame on the one side by a rod 35 provided with a ball-and-socket joint 38 at the tool-frame end and pivoted on a member 37 at the tractor end. At the other side, a member 36 composed of two rods 39, 40 is provided, this member being joined to the tractor frame by a ball-and-socket joint 41. The rods 39, 40 diverge from the joint 41 and are connected to the upper and the lower part of the tool frame by ball joints 43, 44 respectively. The tool frame may be raised for transport, by cables 15 connected to a drum 13 adapted to be operated by the shaft 9. The tools, shown as disks 22, are mounted on a shaft 21, which is rotated through chain gearing by a shaft 25 driven through bevel-bearing by a shaft 32, which carries a sprocket-wheel 33 connected by a chain with a sprocket-wheel 12 on the shaft 9. A second set of disks 27 operating in front of the main set is carried by a shaft 26, also operated through chain-gearing by the shaft 25. This set of disks prepares the soil for the main set by breaking up the top portion of the ground, so that the ground will break in small pieces. The forernost disk 27<a> is made slightly larger than its fellows for the purpose of breaking down any ridge of ground which may be left between the last furrow of a previously ploughed strip and the first new furrow. Scraper blades 60 are provided for each disk, and the side thrust of the disks is taken up by a thrust-wheel 61, which engages the side of the last furrow being cut. The bracket in which this wheel is mounted is adjustable along the member 16. In a modification, the tool frame carries hurrowing-disks which may be adjusted along the frame for the purpose of harrowing close to trees or walls, the tool shaft in this case being provided with a sprocket-wheel which may be driven by a sprocketwheel mounted upon either end of the shaft 25. The disk frame is supported, and the cutting depth of the disks governed, by an adjustable ground-engaging shoe.
Patent GB-1160216-A (GB)
Title: Improvements In Tubular Ceramic Capacitors
IPC: H01G4/28
Filed: 1967-01-27
Abstract: 1,160,216. Capacitors. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 27 Jan., 1967 [28 Jan., 1966], No. 4277/67. Heading H1M. In a capacitor wherein the electrodes comprise the metallized internal and external surfaces of ceramic tube C, good distribution of the current lines on the plates is achieved by having the terminals A and B 1 , B 2  tubular and coaxial with one tube. Connection between terminal A and the internal electrode is via a joint J A  of metal fibres located in a groove in the terminal, the connection being sealed with epoxy resin R. A similar joint J B  connects the external terminal formed by half collars B 1 , B 2  supported by flange D. The arrangement may be used in a by-pass capacitor (Fig. 2, not shown), or the cut-off capacitor in a coaxial line (Fig. 3, not shown). The capacitor may be cooled by passing air or water through the tube or circulating the coolant within the tube.
Patent GB-757247-A (GB)
Title: Liquid fuel metering devices for use on internal combustion engines
Inventor: DOWNING ERIC WILLIAM
IPC: G01F3/18
Filed: 1954-02-15
Abstract: 757,247. Valves. LUCAS (INDUSTRIES), Ltd., J. Feb. 3, 1955 [Feb. 15, 1954], No. 4332/54. Class 7(6) [Also in Group XVIII] A liquid fuel metering device for an engine having three or more cylinders comprises a rotary valve a having a cylindrical bore divided into three or more chambers 1...3 by freely movable shuttles m, n, the number of which is one less than the number of chambers, and a barrel p with inlet and outlet ports connected to the said chambers, the discharge of liquid from any one chamber being effected by pressure liquid in another chamber and the arrangement being such that the discharge through each outlet port except one is effected by the separate movement of its associated shuttle whereas the discharge through the other port is effected by the joint movement of all the shuttles. In a three cylinder engine, Figs. 1 and 2, three outlet ports u, t, v, connected to the cylinders are arranged at 120 degree intervals around the barrel p and are opened at appropriate times by ports in the rotary valve a, which ports also control inlets connecting an annular fuel supply chamber r to the chambers 1...3 defined by two shuttles m, n, which oscillate between a fixed stop c and a stop e adjustable by a hand-wheel j associated with a lock-nut k. In each cycle of operation the fuel under presure is first 'supplied to chamber 2 to drive shuttle m to the left to discharge the fuel in chamber 1 through the outlet u, then to chamber 3 to drive shuttle n to the left to discharge the fuel in chamber 2 through the outlet t, and finally to cham ber 1 to drive both shuttles m, n, to the right to discharge the fuel in chamber 3 through the outlet v. For a six-cylinder engine, Fig 5, two devices each supplying three cylinders through outlets u, t, v and u<SP>1</SP>, t<SP>1</SP>, v<SP>1</SP>, respectively are mounted in a common casing i and driven through gear wheels b, b<SP>1</SP>, from a common drive wheel b<SP>2</SP>.