baber/WOPTO huggingface dataset:
Patent GB-1091479-A (GB)
Title: Complex-forming polyester
IPC: B01J45/00
Filed: 1966-09-19
Abstract: Gold may be extracted from aqueous solutions of gold salts e.g dilute mixed salt solutions or lake water by shaking the solutions with a polyester resin having the formula <FORM:1091479/C6-C7/1> wherein R is a divalent aliphatic or aromatic radical and n is at least 12, and prepared from glyoxal-bis-(2-mercapto-4-hydroxy-anil) and a dicarboxylic acid dihalide (see Division C3).  The complex formed may be decomposed by treatment with a strong mineral acid to give a gold salt solution from which the gold may be recovered by conventional processes or by heat, destroying the resin, to give the free metal directly.ALSO:A polyester which forms a complex with gold has the formula <FORM:1091479/C3/1> wherein R represents a divalent aliphatic or aromatic radical and n is a number averaging at least 12, e.g. 12-2000, preferably 12-200. R is preferably a C1- 6 alkylene radical or an arylene radical.  The polyester may be prepared by reacting in an inert organic solvent under an inert atmosphere at 10-40 DEG  C. glyoxal - bis - (2 - mercapto - 4 - hydroxy - anil) with a dicarboxylic acid dichloride of formula Cl.CO.R.CO.Cl, i.p.o. an acid acceptor.  Suitable acid chlorides are adipic and terephthalic acid dichlorides.  Suitable acid acceptors are pyridine, sodium hydroxide and potassium carbonate; suitable inert solvents include benzene, toluene, hexane, chlorobenzene and pyridine. In an example, to 0.005 moles of glyoxal-bis-(2-mercapto -4-hydroxy-anil) in pyridine at 20 DEG  C. are added slowly 0.005 moles of terephthalic acid dichloride in chloroform, the mixture is stirred then heated to 70 DEG  C., and then precipitated with 2N H2SO4.  The product is washed successively with pyridine, methanol, acetone, ether, 2N HCl, and distilled water and dried, to give a powder.  It is used to extract gold (Au111) from a mixed metal salts solution and from lake water (see Division C7).ALSO:Gold salts may be obtained from dilute aqueous solutions of gold salts, e.g. dilute mixed metal salt solutions or lake water, by shaking the dilute solutions with a polyester resin having the formula <FORM:1091479/C1/1> wherein R is a divalent aliphatic or aromatic radical and n is at least 12, and prepared from glyoxal - bis - (2 - mercapto - 4 - hydroxy - anil) and a dicarboxylic acid dichloride (see Division C3).  The gold complex formed may be decomposed by treatment with a strong mineral acid, e.g. 4N HCl, to give a concentrated gold (III) complex salt solution.
Patent GB-1437488-A (GB)
Title: Apparatus for generating synchronizing singnals
IPC: H04N5/06
Filed: 1973-09-05
Abstract: 1437488 Photo-electric shaft encoders STANFORD RESEARCH INSTITUTE 5 Sept 1973 [25 April 1973] 41796/73 Heading G1A A shaft rotation measuring transducer comprises a disk 10, Fig. 2, having a first pattern of equally spaced parallel lines 12, 14 of different colour (e.g. opaque and transparent) and second pattern 18, 20 which divides the disk periphery into two differently coloured halves. The two patterns may alternatively be on two separate, coupled disks, or the second pattern may be on the end of the shaft 26 or at the disk centre, Figs. 3, 4 (not shown). The two patterns are associated with respective photo-detectors 22, 24, the former being connected to a counter 34 which counts up until the latter detector indicates that the shaft has rotated 180 degrees at which point the counter counts down. The count is converted to an analogue voltage at 38, this voltage varying sinusoidally with the shaft rotation. Fig. 2 also shows a CRT whose verticle deflection is controlled by the sinusoidal voltage and whose horizontal deflection is triggered every time the detector 22 crosses a pattern line; this produces a uniform raster scan on the CRT, the arrangement being intended to display an image of an acoustic field when this field is scanned over a linear array of Piezo-electric transducers by a scanner driven by shaft 26.
Patent GB-1443459-A (GB)
Title: Method of handling shrimp eggs
IPC: A01K61/59
Filed: 1973-09-05
Abstract: 1443459 Handling shrimp RALSTON PURINA CO 5 Sept 1973 [5 Sept 1972] 41805/ 73 Heading A1A Shrimp eggs are shipped and cultivated by maintaining the eggs at 14-25‹C during shipment sudh that the eggs do not hatch or do not progress beyond the beginning of the protozoeal stage of development. Thereafter they are acclimatized to a temperature for hatching or growth.
Patent GB-908614-A (GB)
Title: Method of treating aqueous silica sols
IPC: C01B33/148
Filed: 1960-12-06
Abstract: Silica sols. having an SiO2 content of from e-50% are stabilized by passing the sol. through a strong acid cation exchange resin in the hydrogen form and a strong base anion exchange resin in the hydroxide form, the base resin being capable of salt splitting reactions.  The resins may be used in series or as a mixed bed.  The acid resin may be sulphonated styrene divinyl benzene and the base resin one containing a quaternary ammonium type of exchange group.  The stable sol. obtained has a pH of from 2,7 to 4, an SiO2 content of 15-50%, a conductivity of 100-500 mmthos, a viscosity of 2-100 cps, and a sodium sulphate content of less than 0,001%.  The pH may be subsequently adjusted to between 1 and 7 by caustic soda or sulphuric acid. The sols. may be converted to organo sols. by replacing a portion of the water in the silica sol. by an alcohol, ether or ketone. U.S.A.  Specifications 1,132,394, 1,539,342, 2,244,325, 2,366,007, 2,574,902, 2,577,484, 2,591,573 and 2,750,345 are referred to.
Patent GB-1086049-A (GB)
Title: Synergistic stabilizing composition
IPC: C08K5/13
Filed: 1965-10-04
Abstract: Polymers of C2-4 olefins are stabilized by adding 0.01 to 1.0 weight per cent based on the polymer of a mixture of 90 to 25 weight per cent of 2,4-dinonyl phenol and 10 to 75 weight per cent of 2,21-methylene bis(4,6-di-nonylphenol). Other stabilizers, e.g. sulphur compounds, organic phosphites such as triisodecyl, trioctyl, phenyl didecyl, diphenyl decyl and tri(p-nonylphenyl) phosphite, o-hydroxybenzophenones, 2-hydroxyphenyl benzotriazoles and tris - o - hydroxyphenyl - s - triazines; and lubricants, fillers and antistatic agents may also be added.  In examples films of polypropylene, polyethylene or polyisobutylene are stabilized with (2) the phenol/bisphenol mixture; distearyl, dilauryl or lauryl stearyl dithiopropionate; together with (3) tris-(p-nonylphenyl) phosphite, phenyl didecyl phosphite or diphenyl decyl phosphite, or (4) 2-hydroxy-4-octyloxybenzophenone.ALSO:Mixtures of 90-25 weight per cent of 2,4-dinonylphenol and 75-10 weight per cent of 2,21-methylene bis(4,6-dinonylphenol) are prepared by reacting excess dinonylphenol with formaldehyde.  In Example (1) 0.1 mole of commercial dinonylphenol is refluxed with 0.02 mole of para-formaldehyde in heptane in the presence of hydrochloric acid and a surface-active agent.
Patent GB-991601-A (GB)
Title: Hydraulic starting and pumping devices for internal combustion engines
Inventor: CAMERON-JOHNSON ALAN
IPC: F02N7/00
Filed: 1960-12-06
Abstract: 991,601. Starting; liquid pressure engines; reciprocating pumps. DOWTY ROTOL Ltd. March 5, 1962 [Dec. 6, l960 No 42021/60. Headings F1A and F1K. An hydraulic motor 13 has a stroke varying member 16 which is movable to opposite sides of a neutral position for motor or pump operation, the member 16 being moved to the maximum stroke motoring position to enable the motor 13 to operate as an engine starter motor, a speed responsive means 90 being operative, when the engine attains a predetermined speed, to move the stroke adjusting means to the pump side of neutral. At starting, the motor port 21 is connected to a pressure fluid supply line 58 and the motor shaft 55 drives on to the engine starter shaft 19 through a planetary gear 54, 42, 44 having a reaction member 46 carrying a lever 47 operating a switch 50. Depression of a start button 83 which remains held down by a holding coil 86, energizes a solenoid 80a which closes valve 65 and opens valve 66 so that pressure fluid from pipe 58 flows through chambers 63, 64, to a servomotor 28 to move swash plate 16 to the maximum stroke motoring position. The fluid also flows through a delay device 73 to the inlet 21 to drive the device 13 as a motor and start the engine. At a predetermined engine speed, switch 90 opens to de-energize a holding solenoid for the button 83, which is released to break the circuit of solenoid 80a whereby the motor 28 is connected to drain pipe 69 and swash plate 16 is returned by spring 27 to pumping position in which it delivers pressurised fluid to the pipe 58 through non-return valve 60. The pump delivery is controlled by a valve 33, actuated by the pump delivery pressure, which admits pressurised fluid to space 36 to reduce the pump stroke when the delivery pressure exceeds a predetermined value. When the motor 13 is driving shaft 19 through the planetary gear 42 to start the engine, a reaction member 46 rotates slightly anticlockwise to cause lever 47 to move member 49 to the left to close switch 52 in the circuit of the holding coil 86. When the engine speed overcomes the motor speed, the shaft 19 drives directly on to the motor shaft 55 through oneway clutch 57 and the planetary gear idles due to one-way clutch 45 which permits spring 51 to move lever 47 to the right to break switch 52 which forms a safety device, ensuring that the starting switch coil 86 is de-energized even if the speed responsive device 90 fails.
Patent GB-1189120-A (GB)
Title: Improvements in or relating to Overarm Arrangements for Gramophone Record Changers
Inventor: SAY ALAN W
IPC: G11B11/00
Filed: 1966-09-22
Abstract: 1,189,120. Automatic gramophones. GARRARD ENG. Ltd. 15 Sept., 1967 [22 Sept., 1966], No. 42308/66. Heading G5R. A record-changer overarm 1 is secured to a column 2 having a projecting pin 3 which during normal operation moves up and down a vertical slot 5 in a guide 4, the slot 5 having a transverse extension 7 at the bottom in which the pin 3 may engage when the overarm 1 is lowered below the operative position, the pin 3 then being urged against the upper edge, or a recess 10, of the extension 7 by the action of a resilient collar 8 so that the overarm 1 is held in a safe position for transport; engagement of the pin 3 in a second vertical slot 6 holds the overarm 1 out of the way to permit insertion or removal of records or manual operation.
Patent GB-1322934-A (GB)
Title: Transmission systems for motor vehicles
IPC: F16H59/44
Filed: 1970-09-04
Abstract: 1322934 Controlling variable speed gears ZAHNRADFABRIK FRIEDRICHSHAFEN AG 4 Sept 1970 [13 Sept 1969] 42478/70 Heading F2D A motor vehicle transmission including main and auxiliary gearing having a control including a shaft 20 moved axially and rotated to select ratios is prevented from moving axially to change down gear by a device 11 which becomes effective above a predetermined vehicle speed (e.g. detected by an hydraulic pump 6 or an electric pulse generator (31) Figs. 3 and 4, not shown). As shown the auxiliary gearing is controlled by a pneumatic jack 5 controlled by a relay valve 2 controlled by a valve 1 on a gear lever. A cam 4 on the shaft 20 controls a valve 3 to prevent supply from a pneumatic main 21 to the jack 5 except when the shaft 20 is in neutral. Speed responsive signals, hydraulic or electric are fed 14 to two valves 18, 8. Valve 13 when actuated exhausts a line connecting the valve 2 and either the valve 1 or the jack 5, which when pressurized would cause the auxiliary gearing to adopt its low ratio. The valve 8 when actuated pressurizes the device 11 to prevent the shaft 20 moving from the 3rd, 4th, 7th or 8th ratio positions into the 1st, 2nd, 5th, 6th ratio positions, see Fig. 5. When the jack 5 places the auxiliary gearing in high gear, the speed above which the valve 8 actuates is increased, e.g. by pressurizing a jack 12 to increase the effective return load of the spring 12b.
Patent GB-1300238-A (GB)
Title: Improvements relating to coloured cathode ray tubes
Inventor: KAPLAN SAM H
IPC: H01J9/14
Filed: 1970-09-04
Abstract: 1300238 Making shadow masks ZENITH RADIO CORP 4 Sept 1970 [15 Oct 1969] 42509/70 Heading B3A [Also in Division B6] A process of fabricating a colour c.r.t. shadow mask, comprises etching apertures in a blank in a pattern defined by etch resistant material on the outer surfaces, lining the aperture walls with material 13, relatively oxidation resistant compared with the blank material and of thickness small (e.g. 0À2 mm.) compared with the smallest dimension of the apertures, removing the etch resistant material, oxidizing the blank on the outer surfaces 14, 14a, removing the lining material on the aperture walls and re-etching the walls to increase the smallest dimension of the apertures which in use determines the electron beam cross-section, so that the mask can be used for photographic printing of a colour c.r.t. after the oxidation step and before re-etching, and as a shadow mask for the c.r.t. after the re-etching. The process is applicable to phosphor deposits, red, green or blue dot triads, and circular or hexagonal shapes for instance, with black surrounds, and rectangular or circular screens. The mask may be spherical section to be nearly parallel to the screen surface. The intermediate mask mountings may be by leaf springs on the faceplate flange mounting studs. The blank may be a ferrous metal, cold rolled steel, aluminium clad steel, (e.g. 6 to 7 mm. thickness), or Cu-Ni alloy, the photosensitive resist of dichromated polyvinyl alcohol, fish glue or shellac, normally soluble in a solvent such as water and insoluble on exposure to U.V. radiation. The etchant may be ferric chloride providing differently sized holes (D1) (D2) (Fig. 2, not shown), and concentration 45‹ Baume at 130‹ F. The apertures may be graded radially from the mask centre, 7 and 8 mm. diameters at centre and edge respectively. Lining (13) may be flashed, electroplated or electroless plated, processes being described, and preferably etched by the etchant as used in the first etching step. Layers (11) (11a) are removed and oxide layers (14) (14a) provided which also increase heat losses in use as a mask, being provided by heating at 1040‹ F. in an oxidizing atmosphere, applied chemically in a salt bath, or by heating in steam. The photographic printing process may use pva. with ammonium bichromate. After phosphor depositions, the mask is re-etched to enlarge the aperture (D 2 ) to (D 3 ) (Fig. 5, not shown) of size larger than the individual phosphor deposits and remove liner (13). If liner (13) is not removed by the above etchant, the liner may be first etched separately or electrode-plating. An Al conductive backing layer may also be added.
Patent GB-1322700-A (GB)
Title: Making of pile fabrics
IPC: D04H11/04
Filed: 1971-09-13
Abstract: 1322700 Pile fabrics; pleating TEPPICHFABRIK MELCHNAU AG 13 Sept 1971 [17 Sept 1970] 42510/71 Headings D1K and D1S Pile fabric is made by corrugating pile material in the gaps between lamellar 1-8 on a rotating drum 10, by means of two blades 11, 18, the blade 11 forming the corrugation, the blade 18 moving into the same gap before the blade 11 withdraws and so holding the corrugation, and the blade 11 then withdrawing to form the next corrugation leaving the blade 18 holding the previous corrugation. The blades are cam operated and pivoted so that they move with the drum during its rotation. The pile height may be varied by moving the pivots of the levers operating the blades, the ends of blades may be stepped or undulating to produce sculptored pile and the blades may be movable in sections to vary the pile height.
Patent GB-1096098-A (GB)
Title: Improvements in or relating to trimming shears for metal plates or sheets
IPC: B23D31/04
Filed: 1966-09-26
Abstract: 1,096,098. Shearing. VERWALTUNGSGESELLSCHAFT MOELLER und NEUMANN OFFENE HANDELSGESELLSCHAFT. Sept. 26, 1966 [Oct. 30, 1965], No. 42825/66. Heading B3W. A shear, which is one of two oppositely-disposed shears for trimming the edges of heavy plates, has a movable upper cutter which does not cut along the whole of its length so that the edge trimming remains attached to the plate, from which it is separated by a pair of crosscutters at the next cycle of the shear, is characterized in that the lower cutter carrier is displaced towards the centre of the plate being trimmed during the feed period of the plate. When the movable cutters 11 and 12 shear the strips 10a and 10b from the plate 10, the strips engage the stationary cutters 17 and 18 and impede the feed movement of the plate. To facilitate the feed of the plate the lower cutter carriers are mounted on pivots 20 and 21, the axes of which are in the cutting planes, and the carriers are pivoted towards each other by eccentrics 22 and 23, or by hydraulic cylinders, during the feed movement.
Patent GB-1182695-A (GB)
Title: High Concentrate Pentachlorophenol Preparation
IPC: B27K3/50
Filed: 1967-09-21
Abstract: 1,182,695. Pesticides containing pentachlorophenol derivatives. ARMOUR & CO. 21 Sept., 1967 [21 Sept., 1966], No, 43050/67. Heading A5E. A concentrate comprises (a) a C 1  to C 3  aliphatic alcohol and up to 40% by weight of (b)+(c)+(d), wherein (b) is the reaction product of pentachlorophenol with an alkali metal and/or ammonium hydroxide (in 30 to 70% by weight of (b)+(c)+(d)), (c) is the reaction product of pentachlorophenol with an ethoxylated aliphatic amine (in 30 to 70%), and (d) is free pentachlorophenol (in 0 to 30%). The concentrate may be dispersed in water or oil and finds application as a herbicide, a soil toxicant and a preservative for leather, textiles, wood, &c.
Patent GB-1447773-A (GB)
Title: Two-stroke cycle internal combustion engine
IPC: F02B75/02
Filed: 1973-09-14
Abstract: 1447773 Two-stroke engines; heating charge ROBERT BOSCH GmbH 14 Sept 1973 [15 Sept 1972] 43213/73 Heading F1B In a two-stroke I.C. engine, a first air volume is used for scavenging, and a second air volume is mixed with fuel and exhaust, scavenging and mixture ports are located so that towards the end of a combustion stroke the piston opens the scavenging and mixture ports one after the other so that during a cycle the scavenging air inlet preceeds mixture inlet. Approximately <SP>2</SP>/ 3  of the crank-case air enters via scavenging ports 8, Fig. 1 whilst the remainder is mixed with injected fuel in an exhaust gas heated mixing chamber 6 before entering the cylinder. A non-return valve 21, Fig. 2 prevents pressure fluctuations affecting the mixing chamber 6. In another embodiment a tube 25, Fig. 4 projecting into the crank-case serves as a mixing chamber in which fuel is injected in a direction against the air-flow.
Patent GB-1383875-A (GB)
Title: Vehicle headlamp washing installation
IPC: B60S1/60
Filed: 1973-09-14
Abstract: 1383875 Cleaning vehicle headlamp glasses SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 14 Sept 1973 [2 Oct 1972] 43264/73 Heading A4F In a vehicle headlamp washing installation washing liquid is supplied alternately via nozzles to one of each of two headlamp glasses, through a changeover valve, the changeover mechanism of which is operated by a drive-shaft of a pump motor. In the described embodiment the changeover valve has an inlet 29 and two outlets 31 Fig. 2 (not shown) and 32, flow to each outlet being controlled by one of two valve members 25, which are opened alternately by a cam 21 on a plate 20 rotated by a pump motor shaft 10 via reduction gearing. Alternatively the changeover valve may he electromagnetically controlled by means actuated by the pump drive shaft.
Patent GB-1091915-A (GB)
Title: Improvements in or relating to lead-through terminations
Inventor: FISHMAN DENIS
IPC: H01R4/20
Filed: 1964-10-23
Abstract: 1,091,915. Jointing by stamping. STANDARD TELEPHONES & CABLES Ltd. Oct. 23, 1964, No. 43309/64. Heading B3Q. [Also in Division H2] In an electrical lead-through termination (see Division H2), a lead 4 is secured in a tube 2 of copper, copper zirconium alloy or other highly conductive material by surrounding the tube with a ring 11 of steel or other material of high tensile strength with a coefficient of expansion which is lower than that of the material of the tube and crimping the ring and the tube into the lead. The ring prevents the joint relaxing under high temperature conditions. The crimp may be hexagonal but is preferably square in section and formed by a tool having a fixed part A and parts B, C and D which move in the directions indicated.
Patent GB-993143-A (GB)
Title: Preparation of lower alkyl carbamates
Inventor: BEINFEST SIDNEY
IPC: C07C271/06
Filed: 1961-12-04
Abstract: In the production of C1- 3 alkyl carbamates by reaction of the corresponding alkanol with urea, the effluent vapours are cooled in a first heat exchange zone to condense the alkanol; the flow of effluent vapours to this zone is then interrupted and they are directed to a second heat exchange zone to condense the alkanol; the alkanol is returned to the reaction zone and uncondensed gases are vented.  This method avoids plugging of the cooling zone if only one such is employed, and avoids loss of ethanol if the off-take lines are heated to avoid plugging.
Patent GB-1356939-A (GB)
Title: Transport equipment for controlling the feed of carriages and the  like
IPC: B61B10/00
Filed: 1970-09-10
Abstract: 1356939 Transport system BOATS FITTINGS CO Ltd 9 Aug 1971 [10 Sept 1970] 43376/70 Heading B7L A transport system comprises first and second sections of track 10 and 12 respectively for carriages to travel on, the end 14 of the first section 10 terminating short of and out of alignment with the beginning 16 of the second section 12, an intermediate track portion 18 capable of supporting a carriage 36 and movable between a first position A in which it is aligned with the first section 10 only, to receive a carriage therefrom, and a second position (B) in which the track portion 18 is aligned with the second section 12 only, to release a carriage thereonto, and means for moving the track portion 18 between the two positions A and B. The end 14 of the first section 10 is below the beginning 16 of the second section 12, and a carriage 36 is prevented in position A from passing to section 12 by abutment with beginning 16 and in position B from passing from section 10 to track portion 18 by abutment with the end of the latter 18. An endless conveyer means 48 may have pick-up members 44, 46 to push the carriages 36 along the second track section 12 and switch means formed by pilot valves 51, 52, 53 and 54 triggered by a member 50 moving with the conveyer means 48 to operate a pneumatic cylinder 28 thus pivoting track portion 18 between its positions A and B. Contact of member 50 with valves 51 or 53 causes upward movement of portion 18; with valves 52 or 54 causes downward movement. A stop member 45 may be arranged between two pick-up members 44 and 46 so that after a first carriage 36 has been engaged by the first pick-up member 44, track portion 18 will move the following carriage 36<SP>1</SP> into position B between members 45 and 46, whereby the stop member 45 limits the extent to which carriage 36<SP>1</SP> can close up on carriage 36. The apparatus is suitable for use in a slaughterhouse to carry carcasses 43.