baber/WOPTO huggingface dataset:
Patent GB-1248377-A (GB)
Title: Constant voltage source
IPC: G05F3/22
Filed: 1970-06-19
Abstract: 1,248,377. Automatic voltage regulation. INTERNATIONAL BUSINESS MACHINES CORP. June 19, 1970 [July 7, 1969], No.29786/70. Heading G3X. A temperature compensated constant voltage source comprises an emitter-follower amplifier stage 50 whose output voltage at terminal 58 is fed back to a temperature compensating amplifier stage 52 comprising transistors 62, 64 and resistor 66 forming two parallel impedance paths of different value, the output of stage 52 being fed-to the input 56 of the stage 50. In operation an increase in temperature causes the V be  of transistors 72, 74 to decrease and so make the voltage at terminal 58 more positive. This causes heavier conduction of transistors 62, 64 to increase the current I 1  and so lower the voltage at terminal 56, thereby restoring the voltage at terminal 58. The source is of monolithic construction and is an improvement on a known monolithic source, Fig. 1 (not shown). The specification discusses the effect of V be  and beta variations on the operation of the source.
Patent GB-820042-A (GB)
Title: Torsional vibration damper
IPC: F16F15/14
Filed: 1957-09-23
Abstract: 820,042. Torsional vibration dampers. HOLSET ENGINEERING CO. Ltd. Sept. 23, 1957 [May 31, 1957], No. 29798/57. Class 108(3) A torsional vibration damper comprises an elastic element 15, Fig. 2, interposed between concave and convex surfaces of a driving gagement with the surfaces of a driving member 10 and a driven member 16. Inertia ring 16 is mounted on driving member 10 by rubber ring 15 which is in radial compression and may or may not be bonded to surfaces 14. 17. In a modification, Fig. 3, the driving member is in two parts 20, 21, thus permitting surfaces 14, 17 to have a smaller radius of curvature and offer greater resistance to axial displacement of the inertia ring with respect to the driving member. In a further modification a crankshaft hub and a pulley are formed on the driving member and the inertia ring has two pulley grooves.
Patent GB-1559824-A (GB)
Title: Boxes
IPC: B65D5/74
Filed: 1975-07-16
Abstract: The sales and dispensing box is provided with a base (4) and a dispensing opening (20) arranged in the cover (2) of the box. Said dispensing opening can be closed with the aid of a slide (18) which is located essentially inside the box and can be moved from a position in which the dispensing opening (20) is released into a position closing the same, and vice versa. In this arrangement, an edge of the slide (18) located outside the box is connected to an edge of an end-side lug, with the result that the slide (18) is moved when the lug is pivoted. At least one side edge of the slide (18) is arranged in the vicinity of the adjacent box side wall (8, 10, 12, 14) and is provided with a side lug (28). This is bent into a position in which it rests on the side wall (8, 10), the side lug (28) having a front edge (42) which points in the direction of the box end side (26), interacts with a rigid box stop (42) and delimits the forwardly directed movement, releasing the dispensing opening (20), of the slide (18). <IMAGE>
Patent GB-358275-A (GB)
Title: Improvements in or relating to surface condensers
IPC: F28B1/02
Filed: 1930-10-06
Abstract: 358,275. Surface condensers. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London. - (Assignees o f Smith, J. H.; 57, Ardm o r e Avenue, Lansdowne, Pennsylvania, U.S.A.) Oct. 6, 1930, No. 29851. Convention date, Oct. 4, 1929. [Class 64 (iii).] In a single-pass surface condenser comprising a shell 10 enclosing a nest of cooling-tubes 14 extending between inlet and outlet water boxes 16, 18 and passing through tube-supporting sheets 21, 22, the latter are spaced from the shell so that the steam or other gas to be condensed circulates freely at the periphery of the tube nest and flows in a parallel direction over the sections 25, 24, 23 formed by the tube sheets. The latter have openings 38, 45 respectively, the non-condensable gases being progressively cooled by flowing over the tube nest from the water outlet end 18 to the air and non-condensable gas outlet 48 near the water inlet end 16 of the condenser. A series of air off-take boxes 26 are arranged in alignment with the axis of the condenser, each provided with right and left inlets 27, to withdraw air in a radial direction inwardly from the perimeter of the tube nest. A shroud 29 encloses a part of the tube nest forming an air and non-condensable gas-cooling section 31. A division plate 39 is provided in the air boxes, the gas flowing from section 25 through an opening 41 into a laterally-disposed chamber 42 in section 24. This chamber is formed in a lower part of the air box and the gases flow to the air box proper through lateral outlets 44, the gases being liberated to the section 31 of the nest before entering the air box 26. A similar arrangement is provided in the section 23, the non-condensable gases then flowing to outlet 48. The condensate outlet 12 and the hot well 33 are arranged at the warm end of the condenser. A liquid seal 52 allows the air off-takes 49, 51 to be isolated from the condenser and in communication only with the outlet 48.
Patent GB-839735-A (GB)
Title: Tobacco ash holder for automobile vehicles and the like
IPC: B60N3/08
Filed: 1958-09-18
Abstract: 839,735. Smoker's ash-trays. HAPPICH G.m.b.H. GEB. Sept. 18, 1958 [Nov. 16, 1957; Feb. 15, 1958], No. 29944/58. Class 130. [Also in Group XIV] A clip 10 on each side wall of a housing 1 in the dashboard or coachwork of a vehicle retains a resilient plastic plate 5 having selflubricating plastic noses 6 engaging with pressure a groove 11 in an ash-receiving drawer 2. The plate may be backed by a prestressed leaf-spring also retained by the clip 10 which then comprises lugs bent out of the housing wall. A spring clip 3 limiting outward drawer movement may be disengaged by depressing its end 4.
Patent GB-1042039-A (GB)
Title: Coal plough
IPC: E21C27/32
Filed: 1963-07-29
Abstract: 1,042,039. Mineral-mining ploughs. GEWERKSCHAFT EISENHUTTE WESTFALIA. July 29, 1963 [Aug. 9, 1962], No. 29954/63. Heading E1F. The tool carrier of a mineral mining plough bears against an arcuate surface on the body of the plough and is retained against this surface for pivotal movement with respect to the body when the direction of advance of the plough is reversed.
Patent GB-785715-A (GB)
Title: Preparation of pteridine derivatives
Filed: 1954-10-18
Abstract: Substituted pteridines of the general formula: <FORM:0785715/IV (a)/1> wherein R represents a hydroxy, alkoxy, aryloxy or aralkoxy group, R1 represents hydrogen or an acyl group and R11 represents an hydroxy, alkoxy, aryloxy, aralkoxy, amino or substituted amino group, are prepared by reacting a pteridine of the general formula: <FORM:0785715/IV (a)/2> wherein R, R1 and R11 have the above significance, with a compound containing a mercapto group.  The group R may be a methoxy, ethoxy, propoxy, butoxy, phenoxy or benzyloxy group, the group R1 may be a formyl, acetyl, propionyl, butyryl, benzoyl or phenylacetyl group, and the group R11 may be a methoxy, ethoxy, propoxy, phenoxy or benzyloxy group, or <FORM:0785715/IV (a)/3> may represent an amide group derived from glutamic acid, aspartic acid, glycine or alanine.  Although the reaction takes place at low temperatures, elevated temperatures of about 100/170 DEG  C. are preferred.  An inert reaction solvent may also be used.  Suitable compounds containing a mercapto group mentioned include compounds having the mercapto group attached to an aromatic ring such as thiocresol, thiophenol, and b -thionaphthol, and also thiourea, thioacetic acid, thioglycollic acid, hydrogen sulphide, benzylmercaptan, and tert.-butylmercaptan.  Suitable pteridine reactants referred to are 2 - amino - and 2 - acylamino - 4 - hydroxy6-methylenepterines such as N-{p-[(2-acetamido-4 - hydroxy - 6 - pteridylmethylene) - imino] - benzoyl} glutamic acid, N-{p-[(2-benzamido-4-hydroxy - 6 - pteridylmethylene)imino]benzoyl} glutamic acid, N-{p-[(2-butyramido-4-benzyloxy - 6 - pteridylmethylene)imino]benzoyl} glutamic acid, N-{p-[(2-acetamido-4-hydroxy-6-pteridylmethylene)imino]benzoic acid and esters thereof such as the methyl, ethyl, phenyl and benzyl esters, N-{p-[(2-amino-4-hydroxy-6-pteridylmethylene)imino]benzamide and N-{p-(2 - amino - 4 - hydroxy - 6 - pteridylmethylene) imino]benzoyl-aspartic acid.  In the examples, N2-acetyl-folic acid, folic acid, pteroic acid and the ethyl ester thereof, pteramide and N2-acetyl-pteroyl-aspartic acid are prepared.  Specification 785,354 is referred to.
Patent GB-486396-A (GB)
Title: Improvements in toy aircraft
IPC: A63H27/04
Filed: 1937-11-02
Abstract: 486,396. Captive toy aeroplanes. LIONEL CORPORATION. Nov. 2, 1937, No. 29974. Convention date, Jan. 4. [Class 4] [Also in Group XV] In a toy comprising an aircraft tethered to a fixed support and having an airscrew driven by a stationary electric motor to cause the aircraft to rotate about the support, the speed of the motor is controlled by varying the load on the motor by means of a friction brake. The arrangement is shown diagrammatically in Fig. 1a. An electric motor mounted on the base of a pylon 10, Fig. 4, comprises an armature 23 of which the shaft 29 carries a gear 30 meshed with a gear 31 carried by a vertical shaft 32. Shaft 32, Fig. 3, is connected by a flexible shaft 39 and coiled spring 128 to a flexible shaft 126 driving airscrew 40. Concentric with the rigid shafts, flexible shafts and spring are sleeve 52 carrying a friction disc 50, a spring coupling 116, tubular drive shaft 117, spring coupling 118 and sleeve 11 which last is connected to the aircraft body in such manner that the assembly provides a rotatable constraint allowing the aircraft to fly round the pylon. Means are provided for accelerating or retarding the rotation of tubular shaft 50 to cause the aircraft to perform evolutions such as loops. These means comprise an axially movable transverse shaft 46 driven off shaft 32 and carrying friction wheels 48, 49 either of which can be engaged with disc 50 by operation of hand lever 61. The motor control comprises a friction brake 77 carried by a pivoted arm 75 and urged by a spring 79 to engage a drum 78 fast on shaft 32, and a switch 71. These are controlled from a hand lever 60 by a wire 62 connected to a Z-shaped sliding member 64, Fig. 4, normally held in the position shown, i.e. switch off, brake on, by a spring 65. Up-turned end 69 of member 64 engages an oscillatory switch operating element 70 for actuating a movable contact 70<1>, Fig. 4b. Horizontal portion 72 of member 64 is surrounded by a coiled spring 73 which engages forked end 74 of brake arm 75 when member 64 is moved to actuate the switch. Further movement of member 64 causes spring 72 to oppose spring 79 and reduce the braking torque permitting the electric motor to run at increased revolutions. Full motor speed is attained when member 64 is moved sufficiently to bring ears 80 formed thereon into contact with fork 74. The friction wheel shifting mechanism comprises a member 90 connected to lever 61 and spring urged to the right-hand side of Fig. 4. Collars 93, 94, Fig. 7, are located on member 90 by ears 95 and are spring urged to grip a projection 96 formed on rocking lever 97 the upper end of which carries a yoke 99, Fig. 1a, engaging axle 46. The pylon is provided at its upper end with a turn-table carrying adjustable spring means serving to sustain most of the weight of the aeroplane.
Patent GB-720297-A (GB)
Title: Improvements in or relating to the fabrication of drawn tin plated articles
IPC: C23C2/08
Filed: 1951-12-21
Abstract: 720,297. Baking-tins &c. EKCO PRODUCTS CO. Dec. 21, 1951 [Jan. 3, 1951], No. 29997/51. Class 66. [Also in Group XXII] Drawn tin plated baking pans &c. are coated with a metastable or stable oxide of tin. A baking pan 10, Fig. 4, is drawn in stages from tin-plate which has been coated with a black metastable oxide of tin by an electrolytic process. The finished pan may be heat-treated to convert the black oxide to an opaque olivegreen stable oxide. Specification 717,912, [Group XXXVI], is referred to.
Patent GB-1016338-A (GB)
Title: Improvements relating to combination articles of furniture and amusement primarily for children
IPC: A47D13/10
Filed: 1963-07-30
Abstract: 1,016,338. Seats; tables. G. D. J. BODDY. Oct. 26, 1964 [July 30, 1963], No. 30054/63. Headings A4H and A4J. [Also in Division A6] A combination article of furniture and amusement for children comprises a main frame consisting of a base 10 having four upstanding members 11 with cross-bars 13 and a sub-frame consisting of four arms 14 pivotally suspended from the cross-bars 13 and having a rectangular support 15 provided with bearers 21 carrying a swing seat 22. The sub-frame may be prevented from swinging by means of a bracket 26 which may be lowered to engage one of the arms 14. A table top 30 may be detachably connected to the members 11 above the seat 22. One or more stools 31 may be detachably mounted on the base 10.
Patent GB-305698-A (GB)
Title: Improvements relating to the main clutches of motor cars and the like
IPC: F16D13/72
Filed: 1927-11-09
Abstract: 305,698. Sandberg, C. P., and Humfrey-Sandberg Co., Ltd. Nov. 9, 1927. Clutches, arrangements of.-Relates to motorvehicle main clutch of the roller and other types wherein frictional engagement does not occur simultaneously over the whole available surface, and consists in disposing the clutch within the gear-box at its front end or in a compartment communicating therewith, in order that it may be cooled by the lubricating oil. The invention is particularly applicable to the skew-roller clutches described in Specifications 239,894, 248,183 and 273,382, [all in Class 80 (ii), Gearing, Variable-speed &c.], in which the oil may flow between the inner and outer surfaces. The Provisional Specification states that in other clutches, oil may be thrown thereon by the gearwheels or by oil-throwers &c., and that the arrangement permits automatic lubrication of the clutch control-gear, and reduces inertia by shortening the shaft between the clutch and first gear-wheel.
Patent GB-736065-A (GB)
Title: Improvements relating to copolymers of acrylonitrile and their manufacture
IPC: C08F220/44
Filed: 1953-11-02
Abstract: Copolymers of acrylonitrile with an N-vinyl lactam and, optionally, a minor amount of another monomer are made by polymerizing the monomer mixture in an aqueous medium containing carbon dioxide at a pH between 5 and 8 in the presence of a polymerization catalyst, e.g. a redox system, and, optionally, a chain transfer agent.  The aqueous medium may be buffered to the desired pH.  Lactams mentioned are N-vinyl caprolactam, N-vinyl alpha-piperidone and N-vinyl alpha-pyrrolidone.  The catalyst may be an inorganic persulphate alone, or admixed with a reducing sulphur compound and, if desired, an amino compound. Persulphates mentioned are sodium and potassium persulphates. The sulphur compound may be sodium bisulphite, sodium metabisulphite, sulphur dioxide, acetone sodium bisulphite, or formaldehyde sodium sulphoxylate.  Suitable amino compounds are N-methyl morpholine, dimethylethanolamine, diethylethanolamine, triethanolamine and cetyl dimethylamine sulphate.  Chain-transfer agents mentioned are lauryl mercaptan, allyl alcohol and dioxane. The other monomer may be methallyl alcohol, vinyl isobutyl ether, isobutylene, isopropenyl acetate and diethyl fumarate.  The copolymers are suitable for the production of filaments, yarns and films.
Patent GB-1115645-A (GB)
Title: Tab inserters
IPC: B65B61/20
Filed: 1964-07-30
Abstract: 1,115,645. Roll holders. J. E. THOMPSON. 30 July, 1965 [30 July, 1964], No. 30234/64. Heading A4G. A tab inserter comprises a housing I with an arm 19 carrying a reel 20 of coloured paper from which the tabs are cut, the paper passing between guide rollers 50, 52, through a trough 22 formed in a member 53 and having a transverse Shaft 54 driven by an electric motor to feed the paper strip and co-operating with a roller 55, thence to a knife housing 18 containing a knife coupled to a push-rod 16 operated by a solenoid to cut a tab from the strip material. The inserter is controlled by a batch counter which starts the motor after a predetermined number of sheets have been counted.
Patent GB-934978-A (GB)
Title: Improvements in or relating to reserpine derivatives
IPC: C07D491/22
Filed: 1959-09-04
Abstract: The invention comprises: (a) compounds of the general formulae <FORM:0934978/IV(a)/1> <FORM:0934978/IV(a)/2> <FORM:0934978/IV(a)/3> <FORM:0934978/IV(a)/4> (wherein R1 represents a methyl radical R2 a methoxy or ethoxy radical, R3 a C1-3 alkyl radical and R4 an acetyl, pivaloyl, 3,4,5-trimethoxybenzoyl or O-carbethoxysyringoyl radical, with the proviso that R3 must contain 2 or 3 carbon atoms when R4 is pivaloyl and 3 carbon atoms when R4 is 3,4,5-trimethoxybenzoyl) and the inorganic acid addition salts of compounds I; (b) the preparation of compounds I by lactonizing a tetracyclic lactam of the general formula <FORM:0934978/IV(a)/5> to give a lactone of the general formula <FORM:0934978/IV(a)/6> cyclizing this by the Bischler Napieralski method and treating the product with ammonia to give a 3-dehydrodeserpidic acid lactone VII, reducing this to a substituted isodeserpidic acid lactone VIII, isomerizing this to the corresponding substituted deserpidic lactone IX, subjecting this to methanolysis to give the corresponding hydroxy-ester, acylating this with an acetic, pivalic, 3,4,5-trimethoxybenzoic or O-carbethoxysyringic acid halide or anhydride, and, if desired, salifying the resulting compound I with an inorganic acid; and (c) the combination of process (b) with the synthesis of the starting material by condensing together (i) the diester of an aldehyde dicarboxylic acid resulting, via the corresponding diol, from the treatment of a compound of the general formula <FORM:0934978/IV(a)/7> with periodic acid or sodium periodate in the presence of osmium tetroxide as catalyst, and (ii) a tryptamine of the general formula <FORM:0934978/IV(a)/8> reducing the condensation product with an alkali metal borohydride, and saponifying the reduction product.  The compounds I possess hypotensive and/or sedative properties. Octahydronaphthoic acids III are prepared by treating a bromoketone of the general formula <FORM:0934978/IV(a)/9> with zinc dust in the presence of acetic anhydride.  They are preferably resolved into optical antipodes before being used in process (c) above  Tryptamines IV are prepared by Mannich reaction of 6-R2-indole with an aldehyde R3CHO and isopropylamine or isobutylamine, treating the product with sodium cyanide to replace the isopropylamino or isobutylamino group by -CN and hydrogenating this to -CH2NH2.  The acid D-tartrates of 6-methoxy and 6-ethoxy-b -methyltryptamine are described. 6-Ethoxyindole is prepared by etherifying 3-nitro-p-cresol with diethyl sulphate, condensing the ether with ethyl oxalate to form p-ethoxy-o-nitrophenylpyroracemic acid, reducing this with sodium dithionite to 6-ethoxyindole-2-carboxylic acid, and decarboxylating this by distillation.
Patent GB-435959-A (GB)
Title: Improvements in and relating to stone crushers
IPC: B02C2/06
Filed: 1934-10-23
Abstract: 435,959. Gyratory crushers. HUMBOLDT-DEUTZMOTOREN AKT.-GES., 149, Deutz - M³lheimerstrasse, Deutz, Cologne, Germany. Oct. 23, 1934, No. 30380. Convention date, Oct. 26, 1933. [Class 59] A stone &c. crusher comprising two or more single crushers combined in one casing with a single drive to form a multiple cone crusher is provided with means for adjusting independently the clearance in each crusher. The crusher head is in two parts b, c mounted on the gyratory spindle a. The head b works in conjunction with a concave d and the head c with a concave e. The clearance between the head b and concave d is adjusted by raising or lowering the nut i bearing on the spherical seating k and the clearance between c and e is adjusted by raising or lowering the concave e by screwed rods m. The intermediate space o between the two crushers is larger than the exit opening of the crusher b, and the crushing head b diverges outwardly whilst the crushing head c diverges inwardly.
Patent GB-691665-A (GB)
Title: Method of producing accurately sized long bores
Inventor: WALTHER HANNS
IPC: B23B35/00
Filed: 1951-12-31
Abstract: 691,665. Boring. KESSLER, A., [trading as NABENFABRIK A. KESSLER KOMMANDIT-GES.]. Dec. 31, 1951, No. 30449/51. Class 83 (iii). A method of producing accurate long holes consists in rough boring work 1 to a diameter between that of the boring bar 2 and the final diameter, coating the rough bore with a filling 3, which is capable of being worked by a chipforming operation, while using a core of the diameter of the boring bar, and finally boring the hole while the boring bar is supported in the bore of the filling. The filling may be a thermosetting or thermo-plastic synthetic resin, a casein base horn-like material, or a lead alloy. Alternatively, a tube bored to the diameter of the boring bar may be used as a core and left in position when the filling material has set.
Patent GB-1262797-A (GB)
Title: Method for producing highly crimped regenerated cellulose fibers by steam stretching
IPC: D01F2/08
Filed: 1970-06-23
Abstract: 1,262,797. Crimped viscose filaments. MITSUBISHI RAYON CO. Ltd. 23 June, 1970 [24 June, 1969 (2)], No. 30469/70. Heading B5B. A method for producing highly crimped regenerated cellulose fibres involves stretching filaments containing the reaction product of cellulose xanthate and formaldehyde in a humidified atmosphere having a relative humidity of more than 50% and kept at a temperature of 40‹ to 130‹ C., relaxing said filaments while in a state of regeneration degree of less than 89%, preferably between 20% and 80%, in a liquid having a swelling action on said filaments and maintained at a temperature of between 30‹ and 90‹ C. and then subjecting the filaments to regeneration treatment to complete regeneration.  The filaments are preferably obtained by extruding viscose containing 2 to 8% total alkali and having a salt point of at least 16 into a coagulation bath maintained at a temperature less than 45‹ C. containing 20 to 250 g./l. sodium sulphate, less than 0À3 g./l. zinc sulphate and a sulphuric acid concentration in the range 3A+8 to 8A+16 g./l., A being the total alkali concentration (%) in the viscose. When formaldehyde is added to the viscose, preferably in amount of from 0À2 to 2% by weight based on the viscose, its concentration in the coagulation bath may be in the range 1 to 6 g./l. When it is absent from the viscose solution either the coagulation bath contains between 4 and 20 g./l. formaldehyde or after coagulation in a bath consisting of 14 to 50 g./l. sulphuric acid, 20 to 250 g./l. sodium sulphate and less than 1 g./l. zinc sulphate at a temperature below 35‹ C. the coagulated filaments are treated with an aqueous solution containing between 15 and 70 g./l. formaldehyde. Preferably, the stretching step is carried out at a stretch ratio of 0À25 to 0À8 times the maximum stretching ratio in a humidified atmosphere kept at a temperature between 80‹ and 100‹ C. or in saturated steam at a temperature above 80‹ C. The relaxation process is preferably accomplished in aqueous solutions maintained at a pH of between 2À0 and 10À5, suitably in aqueous solutions containing either inorganic or organic salts of alkali or alkaline earth metals or an organic solvent or it may be carried out in an organic solvent alone. In examples, the relaxation step is carried out after the filaments produced according to the above process have been cut into staple lengths.