baber/WOPTO huggingface dataset:
Patent GB-733774-A (GB)
Title: Improvements relating to the production of hydrogenated pteridine compounds
Filed: 1951-06-06
Abstract: 5,6-Dihydro- and 5,6,7,8-tetrahydro-10-formyl pterins of the general formul  <FORM:0733774/IV (b)/1> and <FORM:0733774/IV (b)/2> respectively, wherein Y represents the formyl group and R represents a hydroxyl group or -COR is an amino acid amide group derived from an aliphatic amino acid, and salts thereof, are prepared by formylating the corresponding 5,6-dihydro- and 5,6,7,8-tetrahydropterins unsubstituted at the 10-position, and salts thereof, with an alkyl formimino ether.  The reaction may be carried out at a temperature between 0 DEG  and 60 DEG  C., e.g. at a temperature below 5 DEG  C. The reaction can be carried out in an anhydrous medium, e.g. in glycol, glycol-glacial acetic acid or b -methoxyethanol.  Suitable alkyl formimino ether formylating agents are ethyl and propyl formimino ethers.  The acids prepared by the above process may then be heated at an alkaline pH in a solution containing caustic alkali to form the corresponding alkali metal salt of pterins of the above general formul  in which the formyl group is attached to the 5-position and not the 10-position, and when the free acid amide is required, the product is acidified with acid.  The heating may be carried out at a temperature between 55 DEG  and 60 DEG  C.  In the examples 5- and 10-formylpteroylglutamic acids and the sodium salts thereof are prepared.  Other compounds which may be used in the above process are 5,6-dihydro- and 5,6,7,8- tetrahydro - pteroylglutamylglutamic acid.  The amino acid amide group may be derived also from aspartic acid, alanine or serine. Specifications 733,062 and 733,130 are referred to.
Patent GB-496799-A (GB)
Title: Process for the manufacture of compounds of the cyclopentanopolyhydrophenanthrene series
Filed: 1937-05-06
Abstract: Compounds of the cyclopentanopolyhydrophenanthrene series of the general formula <FORM:0496799/IV/1> are converted into compounds richer in oxygen by being subjected to the action of hydrogen peroxide in glacial acetic acid in the presence of silver sulphate, and per-acids such as per-benzoic acid, per-phthalic acid, and per-acetic acid.  In the general formula above X is hydrogen, oxygen, a hydroxyl group or a group which is converted to a hydroxyl group on hydrolysis such as an ester, ether or halogen group: Y is hydrogen or a methyl group and Z is a methyl group.  Ring D contains a double bond but no side-chain and the rings A and/or B may be aromatic.  In the latter event Y is not present.  After the addition of oxygen the compounds may be subjected to a hydrolysis and/or a molecular rearrangement.  The process is particularly applicable to the treatment of the mixtures which are obtained according to Specification 494,773 of cracked products without previous separation.  The oxygen addition products may be re-arranged by treatment with acid agents such as mineral acids for example alcoholic sulphuric acid, acid salts for example zinc chloride or with alkali into ketones.  In examples: (1) the residue from example (1) of Specification 494,773 is dissolved in glacial acetic acid, silver sulphate is added, followed by hydrogen peroxide.  After 15 hours the product is re-arranged with alcoholic sulphuric acid and worked up to give a diketone which shows the physiological effects of the male sex hormone.  (2) The solid material obtained according to example (2) of Specification 494,773 is oxidized with per-benzoic acid, treated with dilute aqueous or alcoholic acid or alkali or with zinc chloride and worked up by treatment with semi-carbazide.  The product obtained is identical with the chromic acid oxidation product of the methyl ether of dihydrocholesterol.  (3) The solid material obtained according to example (3) of Specification 494,773 is dissolved in glacial acetic acid and oxidized with per-acetic acid and re-arranged by treatment with alcoholic hydrochloric acid.  The product is worked up by treatment with alcoholic semicarbazide acetate to give a compound which exhibits the physiological properties of the male sex hormone.  Specification 486,854 also is referred to.
Patent GB-1236952-A (GB)
Title: An improved adjusting mechanism for a honing tool
Inventor: COX ALAN JOHN
IPC: B24B33/10
Filed: 1968-03-20
Abstract: 1,236,952. Honing. DELAPENA HONING EQUIPMENT Ltd. 17 March, 1969 [20 March, 1968], No. 13510/68. Heading B3D. An adjusting mechanism for a honing tool of the kind in which stone holders move radially in a body rotatable by a spindle, includes a shaft within the spindle and rotatable relative to it by a fluid motor to actuate means moving the stone holders.  In the embodiment shown, the body 8 of a honing tool has a bore 9 in which is axially movable a stud 10 on which are rigidly secured two cams 11 coacting with stoneholders 12 to move the holders radially outwards in slots in the body against the action of garter springs. The stud 10 is held against rotation relative to the body 8 and has a screwthreaded end 13 engaging a nut 14 axially fixed relative to the body 8. The body 8 is connected by an adapter 15 to one end of a hollow spindle 16 rotatably mounted in a head 17 reciprocable in the direction of the axis of the spindle 16. The spindle 16 is rotated through gears 29, 30. An hydraulic motor 18 is secured to the other end of the spindle 16 so as to rotate therewith. The motor shaft 21 is coupled to a shaft 22 passing through the spindle 16 and provided with a yoke 23 drivably engaging the nut 14. A sleeve 24 fixed relative to the head 17 surrounds a spigot 25 secured to the motor and has two conduits 26 connected to it, each conduit communicating via a sealed annular groove 27 with a port 28 in the spigot. Valve means in the conduits 26 is capable of cutting off the flow of oil under pressure, reversing the direction of flow and varying the rate of flow. To increase the working diameter of the honing tool while it is rotating oil is admitted to the motor 18 to rotate the shaft 22, rotation of the nut 14 causing the stud 10 to move towards the motor 18. To decrease the working diameter, oil is admitted to the motor 18 to rotate the shaft 22 in the reverse direction. The honing tool may have two sets of stone holders, one set carrying roughing stones and the other set carrying finishing stones. Rotation of the shaft 22 in one direction from a zero position moves the roughing stones outwards, and rotation of the shaft 22 in the reverse direction from the zero position moves the finishing stones outwards. Reduction gearing may be provided between the motor and the shaft 22. The screw and nut mechanism may be fitted within the spindle 16.  Reference has been directed by the Comptroller to Specification 1,131,440.
Patent GB-135377-A (GB)
IPC: F16H61/664
Abstract: 135,377. Grice, A. G. Jan. 28, 1919. Change-speed gearing.-The back-axle is connected to the main frame by springs 6 and a subframe 1 which carries friction-disk variable gear 12 and chain-gear 7 driving the axle or differential gear. The driving-shaft 14 is universally jointed in line with the universal joint 15 by which the sub-frame is connected to the main frame.
Patent GB-575088-A (GB)
Title: Improvements in or relating to blinds
IPC: E06B9/34
Filed: 1944-07-15
Abstract: 575,088. Window blinds. LISLE, U. L. O. July 15, 1944, Nos. 13551 and 18146. [Class 20 (iii)] A blind comprises two adjacent elements A, B each composed of horizontal sections 4 carried by tapes &c. 10 with spaces S between the sections, the two elements being secured tc opposite points C, D, o: a spring or other roller 1. As shown in Fig. 3 the elements are unrolled with the sections of one element masking the spaces in the other element initially but by rotating the roller somewhat further, the sections of one element begin to unmask the gaps in the other ele. ment until a full through gap is formec as in Fig. 2. The strengthening bars at the bottom of the lowest sections are connected by links 14 pass ing outside guide rods 17 whereby sideways movement of the blind is prevented.
Patent GB-332957-A (GB)
Title: Improvements in or relating to devices for carrying and displaying flowers
IPC: A01G5/04
Filed: 1929-05-01
Abstract: 332,957. Brown, H., and Yarde, C. May 1, 1929. Wreaths. - F1owers are mounted by making holes in a sheet of suitable materia1, so that the holes are formed with inward1y-projecting ears or barbs integra1 with the sheet, and passing the stalks of the f1owers through the ho1es. The holes may be made with a pointed-coned instniment of three-ray star section. The sheet may comprise a circular cardboard ring formed so as to be convex on the side from which the stalks are inserted, and moss &c. 5 may be retained in the cavity on the concave side by wire 6 threaded between eye1ets 3, 4. The sheet may consist of severa1 layers 1, 2 of cardboard, canvas, &c., which may be waterproofed. and secured together by the eyelets 3, 4; other materia1, e.g. wire gauze or coconut fibre, may be inserted between these layers.
Patent GB-495767-A (GB)
Title: Variable electric condenser assembly with multiple units for key-board operation
IPC: H03J5/32
Filed: 1937-05-13
Abstract: 495,767. Variable condensers. KAPP, R. May 13, 1937, No. 13587. Convention date, May 13, 1936. Addition to 486,605. [Class 37] [Also in Group XL] A key-board operated condenser assembly as described in the parent Specification is mounted in a case with partitions, the various fixed capacities 3, and inductances 20 for various wave-ranges, being situated in the compartments thus formed, and switched in by actuation of appropriate keys 7, 7<1>. Any key 7 depressed is locked in position by tne engagement of a notch in its operating rod 6 in a slot in a spring-urged bar 9 at the back of the casing, while a similarly operated locking slide 9<1> is provided for the wave-range keys 7<1>. The actuation of any key releases the keys previously locked. An auxiliary condenser 14, varied by a knob 12, provides for fine-tuning. This may be actuated automatically in known manner.
Patent GB-696325-A (GB)
Title: Improvements in machines for distributing powdered and other discrete or granular materials
IPC: A01M9/00
Filed: 1951-06-08
Abstract: 696,325. Powder distributers. JOHNSTON. J. W. June 9, 1952 [June 8, 1951], No. 13618/51. Class 6(i) A powder distributer comprises one or more conical hoppers 7, each hopper having a removable perforated bottom wall 8 in which the perforations are contersunk on the underside. Spinner blades 10 carried by a rotatable shaft 9 each have a front part inclined forwards in the direction of rotation and extending in a curve from the shaft such that the outer end of the blade is in advance of the curved body portion. Scraper blades 11 are mounted in the shaft and curve outwards and forwards in the direction of rotation. The bottom wall 8 is replaceable by a wall having perforations of greater or smaller size. A flexible or rigid tubular wind guard may be detachably mounted below the hopper. A plurality of hoppers are mounted on a framework provided with supporting wheels. The shafts 9 of the several hoppers are driven by chain gearing from the axle of one of the supporting wheels.
Patent GB-580662-A (GB)
Title: Improvement in spark plugs and method of making the same
IPC: H01T21/02
Filed: 1944-07-17
Abstract: 580,662. Making spark - plugs. BENDIX AVIATION CORPORATION. July 17,1944, No. 13645. Convention date, July 7, 1943. [Classes 83 (ii) and 83 (iv)] [Also in Group XXVII] Soldering; reworking worn articles.-A sparkplug having a central electrode 16 terminating in anenlarged head including a cylindrical part 17 and a conical part 18 is reconditioned after erosion of the electrode by machining down the conical part to form a cylindrical stem 21, Fig. 4, and soldering a fresh tip member 24 both to part 17 and to the stem. The solder, preferably silver, may be in the form of a thin washer 23. The stem is bored at 22 and is spun outwardly into an annular recess 25 to lock the tip member in position. The tip is heated to about 1400‹ F. by induction heating while axial pressure is applied to the tip to force the solder round the stem 21. Additional solder is applied to the assembly to fill the recess 22. After cooling, the member 24 is turned to the required conical shape, Fig. 5, and end-faced. A new earth electrode 19, 20 may also be fitted. The electrode structure shown in Fig. 5 may also be embodied in new spark - plugs. Specification 547,460, [Group XXVII], is referred to.
Patent GB-163317-A (GB)
Title: Dry cell and method of manufacturing the same
IPC: H01M4/10
Filed: 1921-05-13
Abstract: 163,317. Burgess Battery Co., (Assignees of Schulte, W. B.). May 15, 1920, [Convention date]. Electrodes.-A carbon electrode with its manganese depolarizer 3 is surrounded by a paper or other porous envelope 4 which is secured to the depolarizer by an adhesive such as a one per cent solution of arrowroot in boiling water. The bottom 6 of the electrode may be dipped in paraffin. When dry, the electrode is placed in a zinc container with an intervening paste of zinc chloride, ammonium chloride, water and a cereal such as corn starch as described in Specification 128,332. Specification 163,318 also is referred to. The Specification, as open to inspection under Sect. 91 (3) (a), states that the adhesive may be applied to the depolarizer or to both the depolarizer and surrounding envelope, and that the envelope may be impregnated with a substance on which zinc chloride will act to render the envelope more porous. This subject-matter does not appear in the Specification as accepted.
Patent GB-935425-A (GB)
Title: 1, 3-butadiene/isoprene copolymers
IPC: C08F236/04
Filed: 1960-04-19
Abstract: Linear copolymers of 1,3-butadiene and isoprene containing up to 90% of isoprene and wherein at least 70% of the diene units are cis-1,4 are prepared by polymerizing, in an aromatic solvent, a monomer mixture having a composition equal to that desired in the copolymer, the polymerization being in the presence of a soluble catalyst obtained from an aluminium dialkyl monohalide and a cobalt complex and the reaction mixture consisting of pure monomers with/without inert components such as inert gases (e.g. nitrogen) or aliphatic or non-polymerizable olefinic hydrocarbons.  The catalyst may be obtained from cobalt acetylacetonate or cobaltous chloridepyridine complexes, and dialkyl aluminium chloride, and may be prepared in the presence of monomer.  Specified aromatic solvents are toluene, benzene and halogenated benzenes.  In examples methanol and hydrochloric acid are used in working up the product.  Specification 916,000 is referred to.
Patent GB-1207288-A (GB)
Title: Process for the liquid-liquid extraction of uranium and plutonium
IPC: G21C19/46
Filed: 1969-03-17
Abstract: 1,207,288. Recovering uranium. KERNFORSCHUNG m.b.H. GES FUER. 17 March, 1969 [23 March, 1968], No. 13811/69. Heading C1A. [Also in Division G6] Plutonium and uranium are separated from irradiated nuclear fuel by dissolving the fuel in aqueous acid, extracting both Pu and U by contact with an immiscible organic solution of a quaternary ammonium nitrate, selectively re-extracting the U into aqueous solution, and recycling part of the organic solution containing Pu to the first extraction, the remainder being treated for re-extraction of the Pu into aqueous solution. If the Pu in the original solution is in the hexavalent state, it is reduced to Pu (III) with iron (II) sulphamate, hydroxylamine, or hydrazine, and then oxidized to Pu (IV) with sodium nitrite. U is extracted with nitric acid and Pu with acetic acid containing nitric acid or with a mixture of sulphuric and nitric acids. The quaternary ammonium nitrate specified is tricapryl-methylammonium nitrate.
Patent GB-1081570-A (GB)
Title: Tunnel diode memory cell
Inventor: ZURK ROBERT VAN
IPC: G11C11/38
Filed: 1966-03-29
Abstract: 1,081,570. Tunnel diode circuits. COMMISSARIAT A L'ENERGIE ATOMIQUE. March 29, 1966 [April 2, 1965], No. 13895/66. Heading H3T. [Also in Division G4] A tunnel diode memory cell in which the tunnel diode 4, the anode of which is earthed and the cathode of which is biased for the diode to have two stable states, is connected to a coaxial cable 10 which reverses the input of the cell, and is also connected through a charge storage diode 14 to the output of the cell, and through a diode 20 to an energization circuit for the cell. Such cells may be used to form a ring counter. When tunnel diode 4 is in its lowvoltage state, representing " O," a positive energization pulse from source 34 is insufficient to cause diode 20 to conduct, and the cell is unaffected. When tunnel diode 4 is in its high voltage state, representing " 1," the positive energization pulse passes to diode 4 through diode 20 to switch diode 4 to its low-voltage state " O," and also through charge storage diode 14 (because of the charge stored therein during the period preceding the pulse) and through the reversing cable of the succeeding cell to switch it from " 0 " to " 1." Each cell may be provided with an output circuit 24, S to indicate the state of that cell.
Patent GB-567475-A (GB)
Title: Improvements in or relating to means for optically scanning reflecting surfaces
IPC: H04N1/029
Filed: 1943-08-27
Abstract: 567,475. Phonographs. STANDARD TELEPHONES & CABLES, Ltd. Aug. 27, 1943, No. 13993. Convention date, Aug. 27, 1942. [Class 40 (ii)] [Also in Group XL] In apparatus for use in scanning a lightreflecting object, e.g. for statistical-card sorting, flaw detection, repeated transmission of a message recorded on a rotating disc or in a codetelegraphing practice transmitter, a V-shaped member 28, of light-conducting material such as glass or an artificial resin is arranged with its base adjacent the object 16 to be viewed and with its arms, which may be bent as shown, associated with a lamp 46 and a photo-electric cell 48 respectively. In the example shown of a practice telegraph transmitter, the object is a tape 16 marked with Morse-code indications and the photo-electric cell is associated with electric means for producing audible signals corresponding to the code indications. The arms of the V-shaped member may be of unequal length and a plurality of similar members associated with a common source and separate photo-electric cells may be arranged as shown in Fig. 6 for the simultaneous or successive scanning of a plurality of lines.
Patent GB-1468482-A (GB)
Title: Continuous mixers
IPC: B29C48/41
Filed: 1975-04-04
Abstract: 1468482 Mixing apparatus C C VALERI 4 April 1975 [5 April 1974] 13998/75 Heading B1C A continuous mixer, suitable for mixing rubber and plastics materials comprises two rotors 9 which are rotatable within a mixing chamber 11 provided with a filling orifice 12 and a discharge orifice 29, Fig. 11, the mixing chamber being divided into a feed zone 14 and a mixing zone 15, wherein the two rotors are each provided, in the feed zone, with a two-start, screw spindle 19 each spindle being rotatable in a separate cylindrical chamber, and, in the mixing zone, with two first blades 20 which are disposed opposite one another on the rotor body and which extend continuously over substantially the entire length of the mixing zone and a plurality of second blades 28 which are disposed between the first blades. The discharge orifice is controllable by an inclined transverse power operated gate member 30 as shown in Fig. 11. Heating passages 33 surround the discharge passage 29 and similar passages are provided in the body of the mixer.
Patent GB-232439-A (GB)
Title: Improvements relating to the obtaining of fibres from the leaves of agaves and other fibrous plants
IPC: D01B1/14
Filed: 1924-06-10
Abstract: 232,439. Baldinger, J. June 10, 1924. Breaking and scutching apparatus.-The leaves of agave &c. are fed by a series of bands 1 and the root ends straightened against a movable or other abutment 2. The leaves are then gripped near the root ends and are acted upon by a relatively large scutching-drum 4 which strips the fibres from root to point. The grip on the leaves is then shifted and the extreme root ends are stripped in the opposite direction by a smaller scutchin-drum 6.
Patent GB-461344-A (GB)
Title: Improvements in and connected with soap making machinery
IPC: C11D13/12
Filed: 1935-05-14
Abstract: 461,344. Moulding and cutting soap. PATERSON, A. May 14, 1935, No. 14130. [Class 87 (ii)] In apparatus wherein soap is cast in the form of long bars in paper troughs which, after the soap has set, are conveyed away longitudinally upon a belt conveyer, the conveyer comprises an openwork belting of woven wire or meshwork or of slats, to facilitate uniform and complete cooling of the bars. The apparatus comprises a framework a, Fig. 1, supporting a conveyer mechanism driven by a motor b, a vessel d for liquid soap provided with spouts d<1> and mounted in rails g, means for supporting paper rolls f beneath the vessel d, and a cutter e running on rails h. Each conveyer mechanism may be adapted to cast four bars of soap simultaneously and four such conveyer mechanisms may be arranged side by side in one apparatus. Each conveyer mechanism may comprise four belts j, Fig. 3, of woven wire passing over supporting rolls n and each provided in the underside with a sprocket -chain k passing over drums or cylinders at the ends of the framework. The paper troughs f<1> rest upon, and are carried along by the belts j, the sides being supported by side fences formed by wires, tapes or strips l carried above the belts by brackets m. The brackets, m are shaped to the form of bar desired, and may be adjustable laterally to produce bars of different widths. At the entrance to each belt is a former to shape the paper strip into a trough f the former comprising spaced shaped members o, p through which the strip of paper passes. In a modification, the conveyer mechanism comprises a series of slats q, Fig. 6, each provided with four U- shaped members u which support the paper troughs, the ends of the slats being bent and attached to the links of chains s running on guide tracks on the framework. In use, after the paper strips have been passed through the formers o, p, the conveyer mechanism is set in motion and soap is delivered to the troughs. The cast bars are left in the troughs for a number of hours to solidify and cool, and are then delivered to the cutter e. The cutter e comprises a wheeled carriage x, Fig. 6, supporting sets of sprocket wheels x<1>, x<2>, x3 around which passes chains y carrying toothed, straight or curved, cutting blades z. The bars X are supported by rollers 5, 6 as they are delivered from the conveyer mechanism, and the speeds of the chains y and of the conveyer mechanism are correlated so that the bars are cut at right angles to their lengths.