baber/WOPTO huggingface dataset:
Patent GB-1391088-A (GB)
Title: Production of d-alpha-amino-1,4-cyclohexadienyl methyl  penicillin
IPC: C12P37/04
Filed: 1972-08-08
Abstract: 1391088 Preparing epicillin EISAI CO Ltd 8 Aug 1972 [12 Aug 1971] 37010/72 Heading C2C  D - α - amino - (1,4 - cyclohexadienyl)methyl penicillin (epicillin) is prepared by reacting 6- aminopenicillanic acid or a salt thereof with an ester (preferably the methyl or ethyl ester) or amide of D-2-amino-2-(1,4-cyclohexadienyl)- acetic acid or an acid addition salt thereof in an aqueous medium in the presence of the microorganism Flavobacterium EF 44-102 Nov. Sp. (ATCC No. 21429), or an enzymatically active medium derived therefrom. The microorganism is aerobically grown on conventional medium and may be used as the culture broth, a cell extract, enzyme preparation, or the separated cells. D - 2 - Amino - 2 - (1,4 - cyclohexadienyl)- acetic acid is prepared by reducing D-phenylglycine with lithium in liquid ammonia. The compound is treeated with thionyl chloride in methanol to convert it to its methyl ester hydrochloride.
Patent GB-862824-A (GB)
Title: Improvements in or relating to screened electric coil assemblies
IPC: H03H7/01
Filed: 1958-11-18
Abstract: 862,824. Transformers. GENERAL ELECTRIC CO. Ltd., and DRYBROUGH, D. A. S. Nov. 12, 1959 [Nov. 18, 1958], No. 37075/58. Class 38 (2). A screened electric coil, e.g. a high-frequency transformer for use in a radio receiver comprises a cylindrical coil former 5 whose ends are attached to square plates 6, 7 between which extend four metal rods 10 connected to coils 3, 4 and acting as terminals. Plate 7 is secured to a base plate 16 to which is also secured a screening can 1, closed at its upper end. Attached to can 1 are two members 31 which slidingly engage in holes 38 in plate 6. Variations in the manufactured length of former 5 are therefore tolerated without straining the assembly. Tuning cores 13, 28 are mounted inside each coil, adjustable from the adjacent end of the assembly. Some or all of the members 31 may alternatively be attached to plate 6 and slide in holes in can 1.
Patent GB-1242669-A (GB)
Title: Photographic shutter control apparatus
IPC: G03B7/083
Filed: 1969-07-23
Abstract: 1,242,669. Photographic shutter control apparatus. HATTORI TOKEITEN K.K. July 23, 1969 [July 29, 1968], No.37108/69. Heading G2A. An electrically controlled shutter includes a delay circuit which is connectable to an electric power source by way of a switch 18, 19, 20, a movable release 1, and a shutter actuating cam 23 which is responsive to movement of the release to open and close the shutter after a delay determined by the parameters of the circuit, wherein in operation movement of the release causes the switch to connect the power source to the circuit prior to opening of the shutter while the shutter closing action of the actuating cam causes the switch to disconnect the power source and the circuit. In the cocked position of the mechanism shown, a projection 6 on release 1 engages a recess on one arm 13b of a three-armed lever 13, lever 13 being pivotally mounted at 14 on a switch plate 8 which reciprocates on fixed pins 11, 12 extending through slots 9, 10. Depression of release 1 carries lever 13 and plate 8 with it to close the switch through contacts 18, 20. Pin 7 mounted on release 1 engages locking lever 17 and its other arm is moved out of engagement with nose 23a of cam 23. Cam 23 rotates under action of spring 22, opens the shutter (not shown) and engages a foot 28a of armature 28 which is held in position by the energized electromagnet 53. At the same time, a pin 24 on the cam 23 engages arm 13a of lever 13 which pivots to free release 1. After a time determined by the delay circuit, electromagnet 53 is de-energized to free cam 23 for further rotation during which the shutter is closed and a pin (25), Fig. 3 (not shown) on cam 23 engages a bottom surface 8a of plate 8 which is moved to its starting position and thus opens the switch 18, 20. Reference is made to a focal plane shutter having a preceding screen driving member having its action related to lever 13, and having a succeeding screen driving member acting to return plate 8 to its initial position.
Patent GB-1020686-A (GB)
Title: Endless belt conveyors
IPC: B65G39/073
Filed: 1963-11-21
Abstract: 1,020,686. Endless conveyers. L. W. ATKINSON. Nov. 23, 1964 [Sept. 21, 1963], No. 37210/63. Heading B8A. Means for cleaning a snub drum 10 of an endless belt 14 comprises a scraper blade 132, shorter than the snub drum 10, carried by a sleeve 13 slidingly mounted on a shaft 12 and arranged for manual operation by a handle on a rod 134. When cleaning is required the rod 134 is twisted anti-clockwise, Fig. 2 (not shown), to bring the blade 132 into contact with the snub drum 10, and is reciprocated to remove any foul matter on the drum 10 which matter then drops into a collection trough 15. The blade 132 is arranged to impinge tangentially on the snub drum 10 and may be provided with a counterweight 135. The blade 132 may be reciprocated by a peg 136, Fig. 6 (not shown), engaging two coarse pitch reverse spiral grooves 122, Fig. 3 (not shown), in the shaft 12 which may be driven by a chain 18, Fig. 4 (not shown), from a head drum 11 or by a separate electric motor 20, Fig. 5 (not shown). A plough 137 may be arranged to move with the blade 132 and so clear the trough 15.
Patent GB-344818-A (GB)
Title: Automatic developer for photographic paper in sheets.
IPC: G03D3/12
Filed: 1929-12-05
Abstract: 344,818. Registering webs. SOC. GODEFROY FRERES, 34, Boulevard de la Villette, Paris. Dec. 5, 1929, No. 37375. Convention date, Feb. 1. [Class 100 (i).] In an automatic developer the prints are passed through the developing bath between two endless linen bands, the effective path of which can be adjusted in length, the bands being guided by two auxiliary parallel rollers capable of inclining according as the band comes into contact with one or other of collars on the ends of a principal roller. In the form shown the prints are introduced between the rollers 9, 10 and are entrained by the endless bands 7, 8. The length of the serpentine path 11, 13 followed by the print may be adjusted by moving the toothed wheel 26, carrying a roller 25 over which passes the covering band 8, along the rack 27. A compensating adjustment for the principal band 7 is effected by passing it over a roller 30 connected to the roller 12. Means for effecting transverse registration of the bands 7, 8 comprises a pair of auxiliary rollers 34, 35 pivoted at 45 and connected to a screwthreaded rod 44 which is geared to a shaft 38. The latter is rotated in one direction or the other according as the band comes into contact with one or other of collars 36, 37 which are rotatably mounted at the ends of a principal roller 33. The arrangement is such that if, for example, the band engages the collar 37 the rollers 34, 35 are caused to incline and guide the band away from the collar 37. The apparatus is driven from an electric motor, the speed of which may be adjusted by a rheostat.
Patent GB-927581-A (GB)
Title: Improved catalyst and process for the polymerization of ethylenically unsaturated monomers
IPC: C08F10/00
Filed: 1960-10-31
Abstract: Polymerization catalysts comprise (1) an organo-metallic compound having at least one hydrocarbon group attached directly to a metal atom, (2) a transition metal halide and (3), as a promoter, an oxide or hydroxide of an alkali metal, cadmium or mercury.  Specified catalyst compositions comprise amyl sodium, titanium tetrachloride and sodium oxide; tetraethyl lead, titanium tetrachloride and rubidium oxide; octyl sodium, titanium tetrachloride and caesium oxide; triethyl aluminium, titanium tetrachloride and sodium oxide; para-sodio tetrabutylbenzene, zirconium chloride and caesium oxide; amyl sodium, zirconium tetrachloride and rubidium oxide; triethyl aluminium, titanium tetrachloride and sodium hydroxide; triethyl aluminium, titanium tetrachloride and potassium hydroxide; triethyl aluminium, titanium tetrachloride and lithium hydroxide; and tetraethyl lead, zirconium tetrachloride and potassium hydroxide. The use of organometallic compounds of beryllium, zinc, indium, gallium, magnesium and boron, and of the halides of vanadium, chromium and molybdenum, is also mentioned.  Specified materials which may be polymerized are ethylene, propylene, butene, styrene and methylstyrene.  Examples are given.
Patent GB-619664-A (GB)
Title: Improvements in or relating to mechanism for controlling the operation of air admission valves in air blast systems for ordnance
IPC: F41A13/04
Filed: 1946-12-19
Abstract: 619,664. Clockwork-actuated valves. VICKERS-ARMSTRONGS, Ltd., HESELTINE, J. C. W., and BARRATT, R. H. Dec. 19, 1946, No. 37432. [Class 135] [Also in Group XXI] The air admission valve of an air blast system for guns is opened by the opening movement of the breech-block, the movement of the valve being resisted by a spring whose energy is subsequently used to close the valve, the release of such energy being controlled by an escapement mechanism so as to delay the closing of the valve for a predetermined period. In the construction shown the mechanism is mounted on a bracket 1 secured to the breech ring 2 of a gun and includes a sleeve 11 which is driven rearwards, that is to the left in the drawing, when a bevelled face on the breech-blocks engages with a roller 12 on the member. Such rearward movement is transmitted to a control guide 16 by means of a spring-controlled lever 14b, this guide being mounted on rollers 16b, 16c, and carrying a further roller 16d which depresses a rod 17. The motion of the rod is conveyed by a twoarmed lever 18a, 18b, to a valve on spindle 4a, thus allowing air to pass through the gun barrel. The spindle of roller 16d is connected also to a lever 19a whose other arm 19b is in the form of a toothed segment which serves to drive a gear train and also to lift a rack 29 against the action of a spring 30. The lever 14b is disengaged from the guide 16 when an arm 14a is rocked by a fixed roller 31, and the guide 16 is now moved to the right by a spring (not shown), its speed being controlled by an escapement device 22 with which roller 16d is mechanically coupled via the lever 19a, arm 19b and the gear train. The valve closes when the roller 16d clears the top edge of the rod 17.
Patent GB-1465373-A (GB)
Title: Pulse time interval measuring system
IPC: G04F10/10
Filed: 1974-08-28
Abstract: 1465373 Measuring machine working times DAIDO METAL CO Ltd 28 Aug 1974 [7 Sept 1973] 37599/74 Heading G1J Apparatus to measure and indicate the time taken for a selected one of a sequence of machine operations, comprises a selector switch 6 to enable selection of pulsed input signals from any one of a number of sources 1-5, a cyclic switch 7 which is advanced one step for each pulse of said selected signal, an R.C. timer circuit 8 the charging of which is controlled by the cyclic switch 7, and a digital display voltmeter 9, also controlled by the cyclic switch 7, to display a time value corresponding to the charged voltage of the timer circuit, the time value being the time of said selected operation. The selector switch 6 is manual. Sensors 1-5 each have a cam-operated micro-switch or a photo-electric relay to produce a pulse each time one operating cycle is completed. As shown, each pulse from the selected source advances a step motor 34 of the cyclic switch 7 by one step to advance two moving contacts m 1  m 2  simultaneously. The pulse also acts via a relay 36 to advance a counter 13 by one unit to display the number of operation cycles, and hence the number of workpieces produced. A time integrator 14 displays the cumulative time of said cycles. If the contacts m are initially at fixed contacts a, the first pulse will move them to fixed contacts b to connect the R.C. timer circuit 8 to a constant voltage supply. The second pulse causes contacts m to move to fixed contacts c to disconnect the voltage supply and to energize a relay 37 to connect the timer circuit to the time display voltmeter 9 so that the latter displays the time of the second cycle. The remaining contacts d-j hold this state. When the moving contacts m return to fixed contacts a the time display 9 is zeroed ready for the next measuring cycle. Thus every tenth operating cycle is timed in the system illustrated.
Patent GB-843248-A (GB)
Title: Improvements in pistons for internal combustion engines
Inventor: CROSS ROLAND CLAUDE
IPC: F16J1/06
Filed: 1958-11-24
Abstract: 843,248. Pistons. CROSS MANUFACTURING CO. (1938) Ltd. March 31, 1959 [Nov. 24, 1958], No. 37731/58. Class 122 (1). Piston slap is prevented or minimized by at least one metal strut 3 having a lower coefficient of expansion than the metal of the piston 2 and housed laterally within the piston, one end 5 of the strut passing through a hole 4 in the piston skirt 6 to apply a radial thrust against the cylinder wall 7 and the other end bearing against an abutment, for example the base of a recess 9, on the interior of the piston skirt. The piston 2 is of aluminium alloy and the strut 3 of steel. The strut is supported by a web 16 on the underside of the piston crown 15. In Figs. 1 and 2 the end 5 bears against the cylinder wall through a steel segment 13 which may be integral with the strut. In a modification, Fig. 4, the segment 13 bears against a split ring 11 housed in a groove 12 in the piston. A springy ring segment may be interposed between the segment 13 and the ring 11. Specification 801,199 is referred to.
Patent GB-1425624-A (GB)
Title: Chemical modification of starches
IPC: C08F251/00
Filed: 1973-08-10
Abstract: 1425624 Derivatization of starch under microwave heating SCHOLTEN-HONIG RESEARCH BV 9 Aug 1974 [10 Aug 1973] 37927/73 Headings C3U and C3G Starch is chemically modified, e.g. esterified or etherified, by subjecting a mixture of starch and one or more modifying agents which effecting a chemical transformation of the starch molecule to microwave energy under such conditions that the water content during the radiation treatment is or reduces to less than 10% by weight of the starch. The modifying agent may be monochloroacetic acid or an alkali metal or ammonium salt thereof, a mixture of urea and a phosphorus containing acid or the alkali metal or ammonium salt thereof, a mixture of urea and sulphonic acid or ammonium maleate. Starch may also be subjected to graft polymerization with acrylamide in the presence of colloidal silica and benzoyl peroxide under microwave irradiation.
Patent GB-1126630-A (GB)
Title: Extraction of lead from petroleum products
Inventor: MOSS RONALD
IPC: C10G21/08
Filed: 1967-08-17
Abstract: 1,126,630. Purifying oils. ASSOCIATED OCTEL CO. Ltd. 17 Aug., 1967, No.37984/67. Heading C5C. Lead is extracted from lead-alkyl-containing petroleum products by treating them with an aqueous solution of iodine monochloride, mixing thoroughly and separating aqueous and non- aqueous phases. The reaction is quantitative and the lead passes into the aqueous phase as soluble dialkyl lead halides.
Patent GB-800204-A (GB)
Title: Method and apparatus for maintaining efficiency of vacuum insulation
IPC: F17C13/00
Filed: 1956-12-12
Abstract: 800,204. Storing liquefied gases. UNION CARBIDE CORPORATION. Dec. 12, 1956 [Jan. 5, 1956], No. 38007/56. Class 8(2). [Also in Group XIII] Traces of moisture are absorbed from the vacuum or powder-invacuum insulation 14, between a liquid oxygen container 13 and an outer shell 12 by a molecular sieve 16 of natural or synthetic zeolite having a pore size of at least five angstrom units. Calcium zeolite " A " or sodium zeolite " X " is located within a blister 16 beneath the container 13 and having an aperture covered by a glass wool filter 21 through which the traces of moisture pass to the absorbent. Specifications 777,232 and 777,233, [both in Group III] are referred to.
Patent GB-1057465-A (GB)
Title: Digital to analog converter
IPC: H03M1/00
Filed: 1964-09-18
Abstract: 1,057,465. Transistor circuits. MINNESOTA MINING & MANUFACTURING CO. Sept. 18, 1964 [Sept. 20, 1963], No. 38284/64. Heading H3T. [Also in Division G4] Equal pulses pass a constant-current bidirectional input stage 12 and are accumulated in accordance with their polarity by a reversible electro-chemical " solion " cell 60 to produce a corresponding current through the collectoremitter path of a transistor 86 which is amplified by 104, 114, 130, 132 so as to be available for a utilization device. A switch 154, 159 determines the degree of amplifiaction and a meter 152 indicates the current flowing. Upper and lower current limiting is effected by transistors 174 and 176 respectively. When the output current from the cell rises or falls sufficiently one or other of transistors 174, 176 conducts so that diode 204 or 220 becomes conductive thereby leaking away via 200 some of the input to the cell and stopping further change of the output current. The input pulses to the solion cell are buffered by a smoothing circuit 82, 84 to ensure that the cell is operated within its linear range. A thermistor 102 compensates for temperature changes.
Patent GB-828670-A (GB)
Title: A process for improving the properties of lubricating oils
Inventor: GILMOUR DONALD KEITH
IPC: G01R17/08
Filed: 1957-12-10
Abstract: The spreading pressure of a hydrocarbon lubricating oil on solid surfaces is increased (thereby increasing the ability of the oil to lubricate effectively in internal-combustion engines, gears and other machinery) by treating the oil with 0.05-10%, based on the weight of the oil, of an inorganic acid, and an aqueous solution of hydrogen peroxide.  The oil treated may be a mineral lubricating oil, which may have been refined by a conventional method, or it may be an aromatic extract from mineral lubricating oil.  The inorganic acid may be sulphuric, nitric, nitrous, sulphurous or hydrochloric acid, and the oil may be agitated with a mixture of the aqueous hydrogen peroxide and the inorganic acid. Alternatively, the oil may first be treated with sulphuric acid, and the decanted oil layer then treated with the aqueous hydrogen peroxide.  The oil may be treated by successive portions of the inorganic acid and the aqueous hydrogen peroxide.  The treated oil may be washed with water or an aqueous or an alcoholic solution of an alkaline material such as caustic soda, sodium carbonate or ammonia.  Alternatively, the treated oil may be finished by the addition of a solid alkaline material such as sodium carbonate or lime, with or without an activated earth, and then filtered.  The treated oil may be blended with one or more other hydrocarbon oils, fatty oils or synthetic lubricating oils (e.g. diesters of aliphatic dicarboxylic acids).  In the examples, solvent-refined mineral lubricating is treated with a mixture of aqueous hydrogen peroxide and hydrochloric, perchloric or sulphuric acid.  In another example, the oil is diluted with a light petroleum spirit, treated with sulphuric acid and the oil layer then decanted. This oil layer is treated with aqueous hydrogen peroxide and, after a finishing treatment, the petroleum spirit is distilled off. Specification 764,183 is referred to.
Patent GB-1237788-A (GB)
Title: 2,6-bis-(dialkanolamino)-pyrimido[5,4-d] pyrimidines
IPC: C07D487/04
Filed: 1969-07-31
Abstract: 1,237,788. Pyrimido[5,4-d]pyrimidines. DR. KARL THOMAE G.m.b.H. 31 July, 1969 [31 July, 1968; 1 July, 1969 (2)], No. 38447/69. Heading C2C. The invention comprises compounds of formula wherein R 1  is C 1-3  alkyl, allyl or benzyl, R 2  is C 1-3  alkyl or allyl (or NR 1 R 2  is piperidino substituted by 1 or 2 Me or Et groups in the 2,3 and/or 6-positions, or is 1,2,5,6-tetrahydropyridino, hexamethyleneimino, heptamethyleneimino, 3,6 - ethylenehexamethyleneimino, indolino or 1,2,3,4-tetrahydroisoquinolino), and R 3 , R 4  are each C 2-3 -hydroxyalkyl. These compounds are prepared by (1) oxidizing the corresponding 1,2,3,4-tetrahydropyrimido[5,4-d]- pyrimidines (formed by reducing compounds of the above formula having additionally a 4- NR 1 R 2  group), or (2) reacting a compound of the above formula, having a replaceable substituent in place of one or more of the amino groups shown, with HNR 1 R 2  or HNR 3 R 4 . Therapeutic compositions for oral, parenteral or rectal administration comprise compounds of the above formula, which are physiologically active on the heart and circulation, and inhibit thrombocyte aggregation.
Patent GB-314046-A (GB)
Title: Improvements in junction box systems for electric power cable installations
IPC: H02G15/10
Filed: 1928-12-31
Abstract: 314,046. Woodworth, L. B., and Central Mining & investment Corporation, Ltd. June 22, [Convention date]. Armouring, sheathing, or covering, connection of; junction boxes. - Cable couplings 20 are secured to cables 4 before connection to a junction box 3a by spreading the armouring 22 by means of a split gun-metal wedge 23, and winding it with wire 26 so that it fits into the conical casing 20, the whole being secured by running in molten lead 27, the parts having been previously tinned. A cover 29 confines and supports. the cores 32 and the space 29a is filled with insulating compound. The junction box 3<a> has. bolting flanges 18 with studs 19 for the attachment of the conical casing 20. When the casing 20 is disconnected the opening in the box is covered by a cap 38, and the end-pieces 34 of the cable are covered by a cap, Fig. II (not shown), bolted to the flange 21. The Specification as open to inspection under Sect. 91 (3) (a.) comprises also the provision of a series of junction boxes of various types with openings having bolting flanges of uniform type for the connection of interchangeable standardized cable couplings, caps, connectors for attaching a second junction box, and plug casings. A fourway junction box 3<a>, was stated to contain a block 40 carrying terminals 43 between ribs 42. The end-pieces 34 of cables 32 entering from opposite sides were stated to be clamped by nuts 46 on the terminal stems, an insulating plate 47 placed over the ribs 42, and the end-pieces 34<a> of the branch conductors 32 attached by nuts 49. In the case of a junction box for a through connection the block 40 and terminals 43 were stated to be dispensed with, the cable end-pieces being connected directly together. A loose flange to carry the studs 19 was described for bolting to the outlet of a non-standard switch box &c. to adapt it to receive the standard cable coupling 20. This subject-matter does not appear in the Specification as accepted.
Patent GB-805958-A (GB)
Title: Improvements in blasting assembly
IPC: F42B3/26
Filed: 1956-12-19
Abstract: 805,958. Blasting devices. DU PONT DE NEMOURS & CO., E. I. Dec. 19, 1956 [Jan. 3, 1956]. No. 38643/56. Class 9(1) A detonator for blasting explosives such as ammonium nitrate comprises a casing 8 of material such as bronze or aluminium containing a detonating explosive 7, e.g. RDX or pentaerythritol tetranitrate. A well 6 to receive a blasting cap (not shown) mounted in a rubber washer 5 is pressed into the explosive. The upper part 9 of the well 6 is tapered from an external diameter slightly greater than the internal diameter of the casing 8 to a diameter less that the aforesaid internal diameter and its outer surface is coated with an adhesive to form a water tight seal between the casing 8 and the well. A rubber washer 4 is inserted in the well to grip the blasting cap, when placed in position, and the washer 4 is secured by a rigid washer 3 and crimping of the well 6. The adhesive coating may be varnish, gum, asphalt, lacquer, paint, wax, tar, glue, various rubber compounds or organic polymers.
Patent GB-1038798-A (GB)
Title: Mirror arrangements
Inventor: KUPPER KURT
IPC: A47G1/18
Filed: 1964-09-23
Abstract: 1,038,798. Suspending mirrors. LIONITE SPECIALITIES Ltd. July 22, 1965 [Sept. 23, 1964], No. 38740/64. Heading A4U. A mirror 1 is suspended by means of a string 2 attached to the mirror by means of a metal member 3 in the form of a rosette 4 which has a bifurcated stem extending through a hole in the mirror near its upper edge, the limbs 5 of the stem being bent in opposite directions behind the mirror and the string 2 secured thereto. Alternatively two rosettes may be provided.