baber/WOPTO huggingface dataset:
Patent GB-1382487-A (GB)
Title: Substituted pyrido-3,2-d-pyrimidines
IPC: A61K31/495
Filed: 1972-04-07
Abstract: 1382487 Substituted pyrido-pyrimidine compounds DR KARL THOMAE GmbH 7 April 1972 [10 April 1971 19 Jan 1972 23 Feb 1972 (2)] 16212/72 Heading C2C Novel compounds of the Formula I wherein R 1  and R 2 , which are the same or different, each are morpholino, thiomorpholino, 1-oxidothiomorpholino, 1,1 -dioxidothiomorpholino or piperidino each of which is optionally substituted by C 1-3  alkyl; piperazino optionally substituted in the 4-position by acyl, carbethoxy, carbamoyl or C 1-3  alkyl; or a dialkanolamino or aminoalkylamino; and R 3  is hydrogen or methyl and said addition salts thereof may be prepared by (a) reacting a compound II wherein one or both of Z 1  and Z 2  are groups replaceable by amino and the other Z group if not replaceable by amino is R 1  or R 2  as above, with an amine R 1 -H or R 2 H; (b) removing or introducing an acyl or carbethoxy group from or into a piperazine ring; (c) oxidizing a thiomorpholine group to 1-oxido or 1,1-dioxido-thiomorpholine; (d) reacting a compound VI with crotonaldehyde, acrolein or glycerine in the presence of an oxidizing agent and an acidic condensation agent. The intermediates VI may be formed from 2,4-dichloro-5-nitro-pyrimidine by introducing the R 1  and R 2  by a process corresponding to (a) followed by reduction of the nitro group to amino. The intermediates II may be formed by converting (a) keto to chloro, (b) chloro to thiol, (c) thiol to alkylsulphonyl, or (d) chloro to phenoxy followed where applicable by introduction of one of the groups R 1  and R 2 . Pharmaceutical compositions of the compounds I inhibit aggregation of thrombocytes in human blood when administered orally, rectally or parenterally. Certain compounds I also have blood pressure lowering properties.
Patent GB-1502404-A (GB)
Title: Treatment of sulphur- and zinc-containing ore or concentrate
IPC: C25C1/20
Filed: 1976-04-21
Abstract: 1502404 Treating ores and concentrates SOC MINIERE ET METALLURGIQUE DE PENARROYA 21 April 1976 [21 April 1975] 16226/76 Heading C1A [Also in Division C7] Ores or concentrates comprising sulphur and zinc are treated to recover Zn (and optionally Fe, Cu, Pb and precious metals, e.g. Ag, if present) by: (a) leaching the ore or concentrate with an aqueous solution of CuCl 2 ; (b) subjecting the solution thus obtained to liquid-liquid extraction by means of an organic phase at a pH of not below 0À3 and; (c) recovering the zinc extracted into the organic phase. The aqueous solution of CuCl 2  may be regenerated in step (a) and/or step (b) by means of a regenerating agent which is hydrochloric acid and/or FeCl 2  and gaseous O 2 . When FeCl 2  is used and the pH is from 1 to 3, iron is precipitated as goethite and may be removed before the extraction step (b). The leaching solution may also contain alkali metal chlorides, alkaline earth metal chlorides, NH 4 Cl or FeCl 2 . Preferred organic phases used in step (b) contain an organophosphorus acid (di-2-ethylhexylphosphoric acid specified) or alternatively a neutral organophosphorus compound (tributyl phosphate specified) may be used. The extractant may be mixed with a diluent. The organic phase may be washed with an aqueous ZnCl 2  solution in order to remove any entrained Cu values and the ZnCl 2  may then be regenerated by contact with metallic zinc. The optionally purified Zn laden organic phase may then be treated with H 2 SO 4  in order to obtain the Zn values as ZnSO 4 . Alternatively, if a neutral organophosphorus compound is used as extractant, Clions are extracted in addition to Zn values and ZnCl 2  recovered from the organic phase may be either electrolysed to yield metallic Zn and Cl 2  or pyrohydrolysed to give HCl and ZnO, which may be dissolved in H 2 SO 4  to give a solution of ZnSO 4  which may be electrolysed to give metallic Zn and regenerate H 2 SO 4 . The HCl may be recycled to step (a). Any lead values present may be removed prior to Zn extraction by first treating the ore or concentrate with an amount of CuCl 2  equivalent to the Pb and cooling the leach solution in order to precipitate the PbCl 2  so formed. The ore or concentrate is then leached with further aqueous CuCl 2  in order to dissolve the remainder of the non-ferrous metals. Copper values in the leach solution after Zn extraction may be extracted by means of a further organic phase. The Cu is then recovered and the organic phase regenerated by treatment with sulphuric acid. (For conversion of the metal values recovered to metallic form and removal of metal values from the leach solution in metallic form see Division C7.)
Patent GB-812518-A (GB)
Title: Improvements in or relating to transistor circuit arrangements
IPC: H03F1/30
Filed: 1957-05-22
Abstract: 812,518. Semi-conductor circuits. TELEFUNKEN G.m.b.H. May 22, 1957 [July 3, 1956], No. 16247/57. Class 40 (6). Variations in the operating conditions of a transistor T1 are reduced by deriving the base bias from a potentiometer R1, T1, one arm of which is constituted by a further transistor T2, the base of which is connected to a tap on an emitter resistor RE for the first transistor. In a further embodiment (Fig. 3, not shown) the potentiometer is connected to the base circuits of a pushpull oscillator, the bias for the further transistor being derived from the common emitter resistor of the oscillator transistors.
Patent GB-664646-A (GB)
Title: Process for colouring textiles
IPC: D06P3/42
Filed: 1949-06-20
Abstract: Textile materials of artificial fibres such as cellulose acetate and nylon are printed with dispersed insoluble dyestuffs in the presence of a condensation product of ricinoleic acid or bodied ricinoleic acid with ethylene oxide.  From 5 to 17, and preferably about 11, mols. of ethylene oxide are used to each mol. of ricinoleic acid.  In an example, cellulose acetate is printed with a thickened paste containing an aqueous suspension of the dyestuff p-nitroaniline --> di-(b -hydroxyethyl) aniline, methylated spirit, sodium m-nitrobenzene sulphonate and the condensation product from bodied ricinoleic acid and 11-6 mols. of ethylene oxide.  In a second example, the dyestuff used is 1,4-diamino-2-methoxyanthraquinone or o - chloro - p - nitroaniline --> b -hydroxyethylaniline.
Patent GB-476994-A (GB)
Title: Improvements in and relating to permanent magnets and steels for the production thereof
Filed: 1936-06-11
Abstract: Permanent magnets are made from steel alloys containing 0,7-1,25 per cent of carbon, 2,5-4,9 per cent of chromium, 1,5-3,5 per cent of cobalt, and 0,2-2,5 per cent of tungsten, with or without up to 0,4 per cent of manganese and 0,25-0,8 per cent of silicon. Specification 356,169 is referred to.
Patent GB-1221747-A (GB)
Title: A device for, and a method of analyzing and plotting the frequency response of complex transfer functions
Inventor: COLEMAN BENNY ROY
IPC: G05B23/02
Filed: 1969-03-28
Abstract: 1,221,747. Frequency response plotter. B. R. COLEMAN. 28 March, 1969 [29 March, 1968], No. 16346/69. Heading B6P. [Also in Division G4] A device for calculating the overall frequency response curve of a control system for either amplitude ratio or phase shift comprises a sheet of graph paper 13 on which frequency response curves W, X and Y for the components are plotted using templates and a three-part slider 14 by which the values of curves W, X, Y may be added algebraically to plot the overall frequency response of the system. The frequency is plotted logarithmically on the base axis, amplitude ratio in decibels on the left-hand axis, and phase shift on the right. A conversion scale 42, with a transparent cursor 43, converts the ratio in decibels to normal amplitude ratio. To plot the individual curves for the components, the slider 14 is removed and a straight edge (not shown) pinned to the bottom edge of the base 11. A template, representing the transfer function of the appropriate component, is positioned on the paper 13 with a reference edge against the straight edge and a curve drawn. In another template (Fig. 5, not shown) a vertical line is aligned with the corner frequency (i.e. frequency of maximum amplitude ratio and/or phase shift), a left end aligned with the zero decibel line, and the curve drawn from the template edge. The template can be rotated through 180 degrees to reverse the polarity of the curve. The curves W, X, Y for amplitude ratio and/or phase shift are plotted using the appropriate templates then the straight edge is removed and the slider 14 placed on base 13. The slider comprises a first frequency slide 15 having spring-loaded bars 18, 19 gripping the edge of the base. A second totalizer slide 24 is mounted on rails 17 on the first slide so that it can move with respect to slide 15 and includes a spring-loaded adjustable index mark 28. A third adder slide 31 is slidably mounted on the slide 24 against the action of a spring 35. The slide 31 has a spring-mounted upper part 36 including an inkwell 37 and a pen 39 so that the graph paper can be marked by pressing part 36 down against its spring. To plot the overall response, slide 15 is adjusted so that pen 39 is over the desired frequency then slide 24 is moved till index 28 is over the zero decibel line for amplitude ratio. Adder slide 31 is moved, keeping the other slides still, till the pen intersects one curve. Then slide 24 is moved till the pen 39 intersects the zero decibel line (slides 24 and 31 not being relatively moved). Then the adder slide 31 is moved up to the next curve and the process repeated for all the curves until the last one when the index 28 is aligned with the zero decibel line and the final position of pen 39 marked on the paper. This process is repeated for the other frequencies to get the overall frequency response curve Z. The templates and other components are made of a transparent plastics material.
Patent GB-151383-A (GB)
Title: An improved method of, and means for, testing the hardness of ferrous metals
IPC: G01N27/80
Filed: 1919-06-30
Abstract: 151,383. Wild, L. W. June 30, 1919. Magnetic tests and measurements.-The hardness of ferrous metals is determined by.measuring the residual magnetism. The specimen is intro. duced into a standard magnetizing-coil a enclosed in a removable yoke b. A current sufficient to saturate the specimen is flashed on to the coil a for a very short time, say less than one second, by a switch c. The specimen is then removed from the coil a and inserted into a search coil e connected to a fluxmeter or ballistic galvanometer d, the throw of which is noted on quickly withdrawing the specimen. A condenser f reduces sparking at the switch c.
Patent GB-561483-A (GB)
Title: Improvements in biscuit cutting machines
IPC: A21C15/04
Filed: 1942-11-20
Abstract: 561,483. Feeding dough to biscuitmaking machines. PEEK, FREAN, & CO., Ltd., and RONDOLIN, L. Nov. 20, 1942, No. 16444. [Class 87 (ii)] In order to permit the formation of a loop 6 in the dough between the end of the feeding table 3 and the reducing rollers 1, the table is adjusted so that the end is spaced from the bite of the rollers. When the table is adjusted, a roller 5, which tensions the dough-sheetsupporting web 2, moves with the table to maintain the tension. The loop evens out irregularities in the rate of feed of the dough. According to the Provisional Specification, the table may be adjusted by hand or automatically.
Patent GB-150477-A (GB)
Title: Improvements in and relating to wheel rims for motor-cars, and like road vehicles
IPC: B60B23/02
Filed: 1919-07-02
Abstract: 150,477. Vogel, H. B. July 2, 1919. Tyre attachments to rims; detachable-rim attachments to wheels.-A two-part rim has one or both parts transversely divided so as to be capable of expansion and contraction to facilitate tyre manipulation as well as the attachment and detachment of the rim to or from the wheel. In the construction shown, the rim-part 4 has a flange 5 adapted to engage in a groove 9 on the other rim-part 4a. Both parts are shown split with lap joints 31. For expanding and contracting the part 4 (whether separate from or attached to the part 4a) a toggle device (Figs. 1 and 3) or worm-gear (Fig. 4) is used. The toggle-means consist of pairs of levers 17 adapted to engage lugs 6, 7 on the rim ends and operated by a right and left threaded bolt 19 carrying corresponding nuts 18, 18<1> on which the levers 17 are pivoted. The worm-gear, shown in Fig. 4, comprises a tee-headed 'bolt 33 and a nut 35 engaging stops on the rim ends. An operating-bolt 36 meshes with a worm-thread on the exterior of the nut 35. Interengaging lugs and grooves on the detachable and fixed rims prevent displacement in use.
Patent GB-309338-A (GB)
Title: Improvements in induction measuring instruments
IPC: G01R11/02
Filed: 1928-06-06
Abstract: 309,338. Landis et Gyr Soc. Anon. May 16, 1928, [Convention date]. Induction motor meters.-The driving disc or other armature of induction meters is constructed of an alloy, the principal constituent of which is magnesium. An alloy given comprises 6 per cent aluminium, 1 per cent zinc, 0.2 to 0.5 per cent manganese and the remainder magnesium. Reference has been directed by the Comptroller to Specification 213,221.
Patent GB-278413-A (GB)
Title: Improvements in, or relating to, machines for rolling or curling the leaf of tea
IPC: A23F3/12
Filed: 1926-06-30
Abstract: 278,413. Thomson, G. N. June 30, 1926. Tea, rolling.-Rubber or other resilient lining is employed for some or all of the parts of tea rolling machines that come into contact with the leaf, e.g. the leaf receptacles or cylinders, the ploughs, the rolling tables and the discharge trays. The surface of the lining may be roughened, grooved, or undulated. Crepe or vulcanized rubber may be used. The lining may be positioned by screws or other mechanical means, by adhesives, or by vulcanizing.
Patent GB-381578-A (GB)
Title: Improvements in or relating to valves
IPC: F16K3/26
Filed: 1931-06-05
Abstract: 381,578. Stop valves. NAAMLOOZE VENNOOTSCHAP IRMA INDUSTRIE EN RUWMATERIALEN MAATSCHAPPIJ, 55, Haringvliet, Rotterdam, Holland. June 5, 1931, No. 16519. Convention date, June 7, 1930. [Class 135.] Piston valves; casings.-A stop valve for gases and liquids comprises a casing having inlet and outlet passages c, d substantially in line with a connecting curved passage, all of uniform cross section and a laterally unperforate piston valve a the end wall o of which is curved so that in the open position, as shown, it completes the curved wall of the passage and forms an uninterrupted curved passage through the valve. The piston valve slides in a ported sleeve e with end packings f, g, all disposed in a guide casing having its axis disposed tangentially to the centre line of the curved passage, as shown. The piston valve may be balanced by fluid admitted to the opposite end of the piston through an axially disposed or other passage in the valve. A grub screw i projects into a guide groove in the valve to prevent its rotation during the opening and closing movements by the screw m.
Patent GB-742896-A (GB)
Title: Apparatus for automatically centering a moving endless belt
Inventor: ORR HOWARD SMITH
IPC: B65G39/071
Filed: 1953-06-16
Abstract: 742,896. Belt gearing. UNITED STATES STEEL CORPORATION. June 16, 1953. No. 16639/53. Class 80(1) In order to provide for automatic centreing of a belt 2 on its pulley 4 a central flat portion 18, Fig. 3, of the pulley is provided of a maximum diameter with inclined side portions 20 and the belt is formed of a corresponding cross-section for engagement therewith. In Fig. 4, the pulley 4a is stepped and the belt 2a has corresponding thicker portions 28 at its edges. Specifications 717,671 and 735,561 are referred to.
Patent GB-407576-A (GB)
Title: Change-speed gear mechanism
IPC: F16D23/04
Filed: 1933-06-10
Abstract: 407,576. Change speed gearing. STANDARD MOTOR CO., Ltd., GRINHAM, E. G., and TURNER, W. R., Canley, Coventry. June 10, 1933, Nos. 16646 and 26466. [Class 80 (ii).] Change-speed mechanism comprises a dental member which is synchronized when moved to engagement for one speed and is not synchronized when moved to engagement for another speed. It is described as operative for bringing in the first and second speeds of a four-speed gear, the third and fourth speeds of which are brought in by a double-acting synchromesh clutch 20, Fig. 1. The dental member 12 has spline clutch teeth 16 and peripheral gear teeth. It is splined on a sleeve 25 in turn splined on the driven shaft 13. In the neutral position of Fig. 1, the sleeve 25 is locked to the dental member 12 by a spring ball 28 engaging a recess 29. When the member 12 is displaced to the left to engage second speed, the sleeve 25 is carried along by the ball 28 so that a female clutch cone 27 on the sleeve 25 is pressed into engagement with a male cone 26 upon a loose countershaft driven gear 22. This frictional engagement brings the clutch teeth 16 on the member 12 to approximately the same rotary speed as clutch teeth 17 on the gear 22. Continuing the leftward movement, the ball 28 slips out of the recess 29 and the position of Fig. 4 is realized with the teeth 16, 17 in full engagement. The member 12 is cut away internally at 33 so that this movement is free of a locking peg 31, 32. Because of the ball 28 and the peg 31, 32, the sleeve 25 must be returned to neutral along with the member 12. When the member 12 is displaced to the right to bring in the unsynchronized first speed, a shoulder 30 prevents the sleeve 25 from being carried with it. The peg 31, 32 is thrust hard into a locking recess 34 in the shaft 13 as the gear member 12 passes over the peg into mesh with a mating gear 14 on the countershaft, as shown in Fig. 3. This peg holds the sleeve in neutral while the first speed is being disengaged.
Patent GB-1489855-A (GB)
Title: Mounting ties
IPC: F16L3/14
Filed: 1976-04-23
Abstract: 1489855 Mounting tie IMPEX-ESSEN VERTRIEB VON WERKZEUGEN GmbH 23 April 1976 [12 June 1975] 16651/76 Heading F2H  A mounting tie comprises a shank 1 having at one end an expansion cone 2, the maximum diameter of which does not exceed the maximum diameter of the shank, and an expansible sleeve 4 mounted on a portion 3 of reduced diameter, and, at the other end, a flattened connection head provided with hole 6. The head may also be provided with ridging or fluting 7. The sleeve may have, in addition to expansion slot 41, at least one continuous longitudinal slit to enable it to be passed over cone 2. The cone, head, and portion of reduced diameter may be integral with the shank. Alternatively, the cone may be detachably connected to the portion of reduced diameter in which case the sleeve may not be provided with said slit(s). In use, a strap may be fastened to the tie mounted in a ceiling, the strap supporting a pipe (Fig. 3, not shown).
Patent GB-1113172-A (GB)
Title: Improvements in and relating to manual telephone exchange systems
Inventor: TROTT CYRIL THOMAS JOHN
IPC: H04M3/60
Filed: 1965-04-21
Abstract: 1,113,172. Manual exchanges. TELEPHONE MANUFACTURING CO. Ltd. 14 March, 1966 [21 April, 1965], No. 16725/65. Heading H4K. In a manual private branch exchange of the cordless type a calling exchange line is automatically held when an operator, after ascertaining the requirement, disconnects her telephone from the line without having extended the line to an extension line. A calling condition on an exchange line operates an indicator to which the operator responds by actuating a lockable pushbutton key KEO particular to the calling line and by raising her hand set. Hold relay H is thereby operated over contact KEO1 but as yet does not itself hold the exchange line due to the open contact KEO4. However, the contact H 2  extends earth via the operator's circuit to relay LS which operates and de-energizes relay CT, whose contacts are shown in the de-energized state, to connect the operator's telephone to the exchange line. Having ascertained the requirement the operator selects by lever key key KE a free connector and withdraws from the line by releasing KEO ; the line is now held at contacts H3 and H6 of the relay H which is now held over contacts KE3, KX4, resistor R6 to earth. The extension is rung using the particular ring key KR and the extension line connected to the chosen connector by the particular key KX. Upon the subscriber answering, earth is removed from the C-wire which had been holding the hold relay after KX4 was opened, so releasing the hold relay and connecting the extension and exchange lines together. If the caller is to be announced the particular operator speak key KXO is used which upon releasing removes the holding earth for the hold relay at KXO4 Replacing the extension line handset at the end of a call relights the operator's warning lamp and releases relay LS to re-operate relay CT but the hold relay is not re-pperated due to the resistors R7 and R2. An extension line is barred access to an exchange line by permanently earthing the D wire at E and removing strap CD, so the hold relay can never be released. If an operator breaks in on a connection using her speak key KXO, the connection is broken at KXO1, KXO2 but the exchange line is held by the now-operated hold relay H.
Patent GB-111332-A (GB)
Title: Radio Telegraph and Telephone Stations.
Inventor: SIMPSON FREDERICK GRANT
IPC: H03B11/02
Filed: 1916-11-22
Abstract: 111,332. Simpson, F. G. Nov. 22, 1916. Electric oscillations, producing. - In a method of producing oscillations by shockexcitation, the sparkgap 8 is connected with the aerial oscillating circuit at potential nodes so that the spark is quenched after the first discharge of the condenser 6.
Patent GB-388632-A (GB)
Title: Improvements in devices for wave-band switching for radio receiving apparatus
IPC: H01F21/12
Filed: 1932-06-14
Abstract: 388,632. Inductances. FREDERIKSEN, F. M., Skorping, Aalborg, Denmark. June 14, 1932, No. 16811. Convention date, Sept. 3, 1931. [Class 37.] A rotatable wave-band switch for radio receiving-apparatus has three operative positions for connecting a set of coils in series, parallel, or series-parallel respectively and means for centre-tapping the coil combination in use. As shown applied to a transformer, a rotatable insulating drum 5 carries sets of contact pins 12 passing through the drum, bars 14 embedded in its surface, and short cross-connected bars 13, all of which are engageable with spring contacts 7 connected to two sets of coils 8, 9, 10, 11, which form the transformer windings, in such a way that each set of coils is connected in series, parallel, or series-parallel according as the contacts 12, 14, or 13 respectively are brought into engagement with the contacts 7. Centre-tapping of the parallel combination is provided by a lead 23 and a spring blade 24, which is connected by a short bar 14, Fig. 5, with a spring blade 20 and lead 21, and that of the other two combinations by a lead 18, spring blade 19, and a conductor 13a, Fig. 5, embedded in the drum, which again establishes connection with the blade 20. A variable condenser 17 connected in the primary circuit may be arranged to be operated by rotation of the drum.