baber/WOPTO huggingface dataset:
Patent GB-758486-A (GB)
Title: Improvements in or relating to a rotary suction drum filter
Inventor: STRINDLUND JOHN
IPC: B26B21/26
Filed: 1954-03-04
Abstract: 758,486. Filters. BLACK-CLAWSON CO. March 4, 1954 [March 4, 1953], No. 6339/54. Class 46. A cylindrical perforate strainer 10, Fig. 1, is supported on drum sections 11 and 12 also connected by a drum section 13 of less diameter. One end of the drum is extended beyond the strainer 10 to form a cylindrical suction face 15. The annular space between the strainer 10 and the inner casing is divided into cells 20, Figs. 2 and 3, each provided with a helically-extending discharge duct 25 as described in Specification 756,763. In this case, however, each duct outlet 26 extends radially through the suction face 15. A venting duct 27 connects each discharge duct to its associated cell as described in Specification 730,917. A suction box 30, Fig. 2, including an extended contact face 31, engages the suction face 15 and is surrounded by a liquid container 33, Fig. 1. During rotation of the filter in liquid to be filtered in a vat 19, Fig. 1, any given cell and its associated discharge duct reaches the position indicated in Fig. 3, where the discharge duct is substantially filled with liquid and the cell contains liquid and air, the cell being below the liquid surface in the vat. The discharge duct outlet 26 is at this position shut off by the entering end of the contact face 31, but then passes through the stage where the discharge duct is substantially emptied of liquid by the suction applied by the box 30. The outlet 26 next comes in contact with the leaving end of the contact face 31, Fig. 2, just as the corresponding cell emerges from the liquid surface in the vat; and as the discharge duct outlet moves across the contact face the partial vacuum in the duct caused by the previous evacuation of liquid creates further suction through the perforate surface of the cell. When the duct outlet 26 passes beyond the face 31 liquid from the duct drains into the container 33. Where, as shown, pulp is being filtered and washed, the liquid discharged into the container 33 flows over a dam 40, Fig. 1, into an outer chamber 41 from which by a pipe 42 and pump 44 it is fed to a first set of washing pipes 45, Fig. 2. Clean water may be supplied at 46. Alternatively the liquid recovered in container 33 may be delivered by a pipe 50, Fig. 1, controlled by a float-operated valve 51, to the downspout 36 of the suction box 30 to increase the effective suction therein. Foam or gas entering the suction box with liquid may be removed by a suction pump 55, Fig. 2. In another embodiment a suction box surrounded by a container equivalent to the container 33 is applied to the left-hand end face of a drum constructed as depicted in Figs. 5 to 7 of Specification 756,763. In Fig. 8 (not shown) of the present Specification the features to the right of the section 13 (except the chamber 41) are repeated on the left. Specification 710,478 also is referred to.
Patent GB-115463-A (GB)
Title: Preparing Water Soluble Compounds of Aluminium with Organic Acids.
Inventor: SEFTON-JONES HERBERT
IPC: C07C53/06
Filed: 1917-05-04
Abstract: 115,463. Jones, H. Sefton-, (Wulfing, J. A. von). May 4, 1917. Aluminium carboxylates.-Water-soluble compounds of aluminium with aliphatic acids are obtained by evaporating to dryness solutions of aluminium formate and an alkali or alkaline earth formate or acetate. In the examples the following mixtures are evaporated together :-aluminium and magnesium formates; aluminium formate and sodium acetate; and aluminium acetate and sodium formate.
Patent GB-329964-A (GB)
Title: Improvements relating to motor vehicle lamps
IPC: B60Q1/14
Filed: 1929-02-27
Abstract: 329,964. Lucas, Ltd., J., Turner, E. O., and Drew, D. A. Feb. 27, 1929. Adjusting reflectors from a distance. - In a vehicle electric lamp in which a pivoted reflector is actuated by means of an electromagnet or solenoid, a contact device is adapted to bring a supplementary winding or resistance into action at or near the end of the operation of the main winding so that the reflector can be held in the tilted position by means of a reduced current. In the form shown, an electromagnet c is provided with a low resistance main winding in series with a high resistance supplementary winding, the latter normally being short-circuited by means of contacts f, g secured to its ends. When the current is switched on the low resistance winding is energized and the reflector a is tilted by the plunger h. When the plunger approaches or reaches the end of its stroke a lateral projection p on the plunger engages a spring blade carrying the contact g and separates it from the contact f, the reflector being held in the tilted position by means of a helical spring l and the contact g closes on the contact f. One end of the spring is attached to an abutment o which is attached to the reflector and co-operates with the outer end of the plunger, whilst the other end is attached to a bracket m carrying the electromagnet and attached to the interior of the lamp casing behind the reflector. The lower end of the plunger slides in a guide q and is supported by an adjustable end stop r, a fuse k being provided for protecting the windings of the electromagnet.
Patent GB-717262-A (GB)
Title: Improvements in or relating to sawtooth voltage pulse generators
IPC: H03K4/20
Filed: 1952-03-12
Abstract: 717,262. Saw-tooth generating circuits. GENERAL ELECTRIC CO., Ltd., and GLEDHILL, G. A. March 10, 1953 [March 12, 1952], No. 6428/52. Class 40 (6) A saw-tooth generator 1, 2, 3, 4 of the Miller type has a direct current negative feedback path between anode and grid to cause a small stable anode current to flow during the quiescent period between output waves so that the output voltage step which normally occurs at the onset of the initiating pulse is avoided and the output wave amplitude is more stable with change of frequency. According to the invention the feedback path essentially includes a cathode follower 8, 9 fed from the anode of the Miller valve and diode or other unilateral conducting device 7 connected between the output of the cathode follower and the control grid of the Miller valve. A positive gating pulse applied to a diode 11 causes the diode 7 to be rendered non-conductive and the normal Miller run-down occurs. During the quiescent period between gating pulses the diode 7 is conducting and applies the desired potential to the control grid. The gating pulses may alternatively be applied through a cathode follower to the cathode of valve 9 and the two cathode followers may form cathode coupled multivibrator to generate the gating pulses. A capacitor may be connected across the feedback resistor 13 to prevent damped oscillations occurring at the end of the flyback due to the stray capacitance at the grid of valve 9, Fig. 2 (not shown). Further amplification may be included in the feedback path.
Patent GB-229508-A (GB)
Title: Improvements in distributors for artificial manures
IPC: A01C15/18
Filed: 1924-03-13
Abstract: 229,508. Gratton, D. T. March 13, 1924. Manure distributors. - In a machine for distributing manure in rows for potato and root growing &c. the manure box is fitted with a number of relatively adjustable hoppers corresponding to the number of rows. The hoppers consist of bottom frames e and of hinged boards f<1> fitting between the vertical sides of the manure box a and contacting with one another or with upright partitions g. Beneath the discharge opening in each frame e is a board over which passes an endless web or spreader consisting of slots i' and chains i<2> driven from the road wheel c by sprocket gearing l, m, n, spur gearing o, and a clutch. The boards and the frames e may be adjusted simultaneously by means of levers or of rods s and pins t passing through the rods s and fixed brackets u. The frames e may be adjustably secured by bolts passing through a side of the box a. The central hopper may be fixed. The boards and endless webs are mounted in a frame detachably connected to the box a. The frames e may be provided with downwardly projecting bristles, and the discharge may be regulated by means of change gearing, or slides or distance pieces between the box a and the detachable frame. The travelling wheel d is adjustable on its axle by means of plain collars z<3> and the wheel c by means of a plain collar z' and collars z having clutch teeth.
Patent GB-861080-A (GB)
Title: Improvements relating to internal combustion engines with direct fuel injection
Inventor: SCHMIDT EKHARDT
IPC: F02B31/06
Filed: 1959-02-25
Abstract: 861,080. Direct-injection engines; inlet valves and ports. DAIMLER-BENZ A.G. Feb. 25, 1959, No. 6564/59. Classes 7(2), 7(3) and 7(6). In a fuel injection engine with a combustion chamber 2 formed as a body of rotation in the piston 1 with a wide outlet opening 3, the admission valve is provided with means such as a mask 7 to produce rotation of the air and is either countersunk, Fig. 1, or provided with a cylindrical portion 9, Fig. 3, above or below the seat 8 to produce rapid opening of the port, the valve being controlled by a cam 10, Fig. 4, with a flattened highest portion b<SP>11</SP> extending over at least 30 degrees. The mask 7 may be replaced by fins or by a deflecting grid in the intake passage, or the intake passage may be spirally shaped adjacent the port. The fuel injector provides four equally spaced jets.
Patent GB-840408-A (GB)
Title: Improvements in and relating to pressure exchangers
Inventor: BARNES JOHN ANTHONY
IPC: F04F13/00
Filed: 1958-02-28
Abstract: 840,408. Pressure exchangers. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. Feb. 27, 1959 [Feb. 28, 1958], No. 6614/58. Class 8(1). A pressure exchanger cell ring comprises a plurality of individual tubular members between inner and outer co-axial cylindrical members 2, 1, and lying parallel to the axis of the cylindrical members. As shown the tubular members are cylindrical ; the Specification describes a number of embodiments in which the tubular members are of various cross-sectional configurations, and various arrangements of cylindrical tubular members which may be of different cross-sectional areas. The spacers 4 (where they exist) may or may not form cell passages. The cells may be rotary or stationary.
Patent GB-491661-A (GB)
Title: Manufacture of aluminium salts of carboxylic acids
IPC: C07C51/41
Filed: 1937-03-06
Abstract: Neutral aluminium salts of carboxylic acids are obtained by heating metallic aluminium with the anhydrous carboxylic acid in the presence of a carboxylic acid anhydride.  Small quantities of the anhydride reckoned on the acid used suffice.  The acid from which the anhydride is derived may have the same or a smaller number of carbon atoms than the acid used in the reaction.  The acid should be in excess, whereby the salt formed may be readily separated as a powder, the excess acid being then used in a further operation.  Reaction is preferably effected at the boiling point of the acid.  The aluminium may be used in the form of powder or wastes, as turnings, tubes, sheets or plates.  Examples relate to the production of aluminium acetate, propionate, butyrate and oenanthate, and to the use of acetic, propionic, butyric and oenanthic anhydrides.
Patent GB-1274124-A (GB)
Title: Means for maintaining the position of a moored ship substantially constant in the general direction of its fore and aft axis
Inventor: RUDELUIS PER
IPC: G05B19/06
Filed: 1970-02-12
Abstract: 1,274,124. Automatic position control. ALLMNNA SVENSKA ELEKTRISKA A.B. Feb.12, 1970, No.6745/70. Heading G3R. Movement of a ship relative to a mooring berth detected by relative movement of points on the ship and on land causes rotation of a controller which adjusts the relative tensions in mooring cables fore and aft of the ship to restore the ship to a desired longitudinal position. In Fig. 1, a telescopic forked arm 7 pivotted on a ship 1 engages a pillar 6 fixed to the quay so that longitudinal movement of the ship relative to its berth causes rotation of a cam controller on the ship to adjust the relative torque of position-correcting electric, steam of hydraulic winch motors 2-5 associated with mooring lines fore and aft of the ship. The desired position of the ship may be selected by manual adjustment of the neutral position of the cam controller with the aid of an indicator lamp. Thyristor, transductor, Ward-Leonard, polechanging or field resistance control of electric winch motors may be employed. The winches, which may also be manually controlled, may, alternatively, be on the quay. The position of the ship may, alternatively, be detected by photocells or electromagnetic devices.
Patent GB-497082-A (GB)
Title: Improved process of manufacturing step-ladders and so forth
IPC: E06C7/08
Filed: 1937-03-08
Abstract: 497,082. Making ladders, fencing, &c. WUSTER, JUN., H. March 8, 1937, No. 6774. Void. Convention date, March 13, 1936. [Classes 83 (ii) and 83 (iv)] In the manufacture of ladders from sheet metal, the sides are formed of trough section in two parts each having an out-turned flange 5 and a hook flange 4. After assembly the interengaged flanges are clinched as shown at the bottom of Fig. 1. In a modification the sides are flanged and welded at 8, Fig. 2. Before uniting the parts, the inner members are punched with rectangular holes for the rungs and the outer members are punched with slits 13, Fig. 4. The steps are channel section with tongues 15, Fig. 5, or rectangular section with tongues 16, Fig. 6. After assembly the tongues are clinched over as shown in Figs. 3 and 4. The sides may be of oval section flattened to engage the steps. The process is stated to be applicable for the manufacture of railings and the like.
Patent GB-557488-A (GB)
Title: Improvements in and relating to bolting cloth, grit gauze and the like
IPC: D06M23/06
Filed: 1942-05-19
Abstract: 557,488. Treating artificial filament fabrics. COURTAULDS, Ltd., and McFARLANE, R. A. May 19, 1942, No. 6775. [Classes 2 (ii) and 15 (ii)] [Also in Group VIII] Bolting cloth, grit gauze, and the like is made from a thermoplastic artificial thread containing one or more continuous filaments woven in a leno weave and the threads are prevented from slipping over one another by thermally welding the warp and weft threads at their crossings, with or without the use of a swelling agent. In weaving the fabric, either all or only some of the warp threads may be crossed over one another between successive insertions of the weft thread, e.g. a full leno or half leno fabric may be obtained. Multifilament threads are given sufficient twist to confine the filaments to the parent thread. The thermoplastic thread may be of cellulose acetate or of a resin such as that obtained by co-polymerization of vinyl chloride and vinyl acetate. The swelling agent may be acetone or trichlorethylene. In an example, a fabric made wholly or in part from such a thread and woven with a leno weave is subjected to a decatizing treatment for about 1 minute, or is calendered at a temperature of 150‹ F. or more. In another example, a similar fabric is padded through a solution of 90 per cent. acetone in water. The fabric is squeezed, pulled out to the desired dimensions on a pin stenter and dried at 70‹-90‹ C. Instead of aqueous acetone there may be used as softening agent a solution of acetone in methylated spirits with or without tricresyl phosphate. Specifications 449,106, 462,242, and 513,354 are referred to.
Patent GB-1424212-A (GB)
Title: Process for the manufacture of 16,17-unsaturated steroids
IPC: C07J7/00
Filed: 1973-02-12
Abstract: 1424212 Preparation of #<SP>16</SP>-21-acyloxy-20- keto-steroids SCHERING AG 12 Feb 1973 [11 Feb 1972] 6820/73 Heading C2U Steroids of the formula (wherein the dotted lines in the rings indicate the optional presence of #<SP>1</SP>-, #<SP>6</SP>- and #<SP>9(11)</SP>- double bonds; R 1  is H or CH 3 , or, when #<SP>6</SP> is present, it can also be F, Cl or Br; R 2  is H or C 1-3  alkyl; R 3  is C 1-5  acyloxy derived from an aliphatic carboxylic acid; Y, when #<SP>9(11)</SP> is absent, is H or F; and Z is OH or H) are prepared by heating steroids of the formula wherein R<SP>1</SP> 2  is defined as R 2  above in an organic polar solvent with an alkali metal or alkaline earth metal salt of a C 1-5  alkanoic acid, carbonic acid or an aromatic carboxylic acid, at a temperature of from 80 C. to the boiling point of the solvent, advantageously under an inert gas such as nitrogen. Suitable solvents are pyridine, acetic acid, dimethyl sulphoxide, DMF, DMA and acetonitrile. Steroids of the second formula above are prepared from steroids containing a dihydroxyacetone side chain by the Maltox rearrangement to form an enol-aldehyde (20-hydroxy-#<SP>17(20)</SP>- pregnen-21-al) followed by acylation.
Patent GB-987556-A (GB)
Title: Process for reducing the dimensions of monocrystalline bodies of semiconductor material by polishing
IPC: B24B37/04
Filed: 1964-02-19
Abstract: The dimensions of a monocrystalline body of semi-conductor material are reduced by treating in a polishing device in the pressure of at least two chemically active substances which when they interact have a polishing effect on the body, the substances being introduced simultaneously and separately into the device and discharged therefrom at the same rate as they are introduced. The substances may be hydrogen peroxide and sodium hydroxide for etching germanium, or nitric acid and hydrofluoric acid for silicon.  The semi-conductor plates may be mounted on a carrier plate and rubbed against a polishing plate.  The process may be carried out in stages, with progressive dilution of at least one of said substances, or progressive increase of viscosity by adding a fluid such as glycol, glycerine, sodium tetrasilicate, silicon oil or paraffin oil.ALSO:The dimensions of a monocrystalline body of semi-conductor material are reduced by treating in a polishing device in the presence of at least two chemically active substances which when they interact have a polishing effect on the body of the substances being introduced simultaneously and separately into the device and discharged therefrom at the same rate as they are introduced.  The substances may be hydrogen peroxide and sodium hydroxide for etching germanium, or nitric acid and hydrofluoric acid for silicon.  The semi-conductor plates may be mounted on a carrier plate and rubbed against a polishing plate.  The process may be carried out in stages, with progressive dilution of at least one of said substances, or progressive increase of viscosity by adding a fluid such as glycol, glycerine, sodium tetrasilicate, silicon oil or paraffin oil.
Patent GB-471593-A (GB)
Title: Improvements in and relating to lubricants
IPC: C10M135/02
Filed: 1936-03-06
Abstract: Sulphurized esters of a mono- or di-hydric alcohol and an organic acid are prepared by heating the esters with sulphur, hydrogen sulphide being removed from the product by the use of a weak oxidizing or reducing agent, or by blowing with sulphur dioxide.  The esters of highly unsaturated acids are partly hydrogenated before being sulphurized.  Esters specified as being so treated are methyl oleate, ethyl abietate, the methyl esters of rosin oil, and the esters obtained by heating methyl alcohol with a by-product from pine wood, which by-product comprises rosin acids, unsaturated fatty acids, and higher alcohols.ALSO:A lubricating or cutting oil comprises a hydrocarbon oil and a small percentage of a sulphurized ester of a mono- or dihydric alcohol and an organic acid.  The sulphurized compounds are prepared by heating the esters with sulphur, hydrogen sulphide being removed from the product, e.g. by the use of a weak oxidizing or reducing agent or by blowing with sulphur dioxide. The esters of highly unsaturated acids are partly hydrogenated before being sulphurized.  The compounds are added to the hydrocarbon oil in an amount such that the product contains from 0,1 to 6 per cent of sulphur.  In examples. a mixture of pale oil and steam-refined stock is mixed with sulphurized methyl oleate. and black oil is blended with the products obtained by heating sulphur with methyl oleate, ethyl abietate, the methyl esters of rosin oil, or the esters obtained by heating methyl alcohol with a bye-product obtained from pine wood, which bye-product comprises resin acids, unsaturated fatty acids, and higher alcohols.
Patent GB-928441-A (GB)
Title: New complex compounds of transition metals
Inventor: CHATT JOSEPH
IPC: B01J31/16
Filed: 1959-02-27
Abstract: The invention comprises complex compounds each comprising two constituents, viz a transition metal hydride, halohydride, alkylhydride, arylhydride or thiocyanatohydride and a constituent having the structure: R1R2Y.X.ZR3R4 in which X is a divalent hydrocarbon radical, Y and Z are atoms of phosphorus or arsenic and R1, R2, R3 and R4\t are univalent hydrocarbon radicals.  The general formula of the compounds may be written as:-  <FORM:0928441/IV(a)/1> in which W is the transition metal hydride, halohydride, alkylhydride, arylhydride or thiocyanatohydride, and n is a number which depends on the nature of the transition meal.  Thus, when the metal is iron, ruthenium, or osmium n is probably 2 whereas when the metal is rhodium n is probably 3.  The complex metal hydride, halohydride, alkylhydride or arylhydride compounds may be prepared by reducing the corresponding complex metal halides, alkylhalides or aryl halides with a metal hydride (e.g. lithium aluminium hydride) in solution, substantially in the absence of oxygen, and conveniently at room temperature, whilst the thiocyanato complex may be prepared by reacting in solution, substantially in the absence of oxygen, a corresponding halohydride and an ionic thiocyanate, e.g. potassium thiocyanate. The complex metal hydride may also be prepared by heating, substantially in the absence of oxygen, and in an atmosphere of hydrogen, the appropriate metal in finely divided form with the compound of formula: R1R2Y.X.ZR3R4.  In the latter method the yield may be improved if a small quantity of mercury, lead or arsenic is present in the reaction mixture, mercury being preferred.  The alkyl group in the alkylhydride is suitably a C1-C6 alkyl group and the aryl group in the arylhydride may suitably be phenyl.  The halohydride may be a chloro-, bromo-, or iodo-hydride.  Y and Z may be the same or different and may be attached to the same or different carbon atoms in the radical X and it is preferred that the number of carbon atoms between Y and Z should not exceed 3.  X is conveniently an alkylene or arylene radical, e.g. methylene, ethylene, or o-phenylene, and R1, R2, R3 and R4 are suitably C1-C6 alkyl radicals or aryl radicals, e.g. phenyl.  The term "hydride" includes deutrides. Several examples are given for the production of the complex compounds of specified type in which the transition metal is iron, ruthenium, osmium, and rhodium.  The preparation of various complex metal halides used as starting materials is also described. The products are useful as oxidation catalysts, e.g. in the oxidation of cyclohexene to cyclohexenone, and the dihydro complexes may be used to reduce carbon tetrachloride to chloroform at room temperature.  Specification 928,442 is referred to.