baber/WOPTO huggingface dataset:
Patent GB-171854-A (GB)
Title: Improvements in locks
IPC: E05B63/14
Filed: 1920-09-30
Abstract: 171,854. Wycherley, A. J. Sept. 30, 1920. Night-latches and like spring locks; latches, sliding.-Two latch bolts 6, 7 are arranged in a single casing, one adapted to be operated from outside by a handle, and the other by a key, mechanism being fitted to block either or both bolts. Fig. 1 shows one form in which slides 25, 25a are moved by knobs to engage notches 11 in pieces 10 attached to the respective bolts, in order to retain them in the withdrawn position, and to engage behind the pieces 10 to block them in the shot position. In addition to independent blocking, a further slide 29 may be arranged to block both bolts simultaneously. Spring retaining-pins 27 hold the slides in position. Modifications are described in which (a) independent.or (b) simultaneous blocking-means of a similar character are alone fitted.
Patent GB-717935-A (GB)
Title: Improvements in or relating to sweet-forming and wrapping machines
Inventor: ROSE ALFRED GERMAN
IPC: A23G3/02
Filed: 1951-11-28
Abstract: 717,935. Moulding confectionery. ROSE BROS. (GAINSBOROUGH), Ltd. Dec. 10, 1952 [Nov. 28, 1951], No. 27858/51. Class 87 (2) A rope 10 of toffee is shaped between rollers 12, 13 and 14, 16 into a desired cross-sectional shape. The toffee is then fed to rollers 17, 18 which score it longitudinally into, e.g. the forms shown in Figs. 3, 4, and 5. A rotating knife 26 is traversed at intervals to sever a bar of toffee. The cut bars are transferred by a conveyer 28 to the wheel of a wrapping machine. The rollers are driven intermittently in timed relation with the conveyer. The knife cuts one bar during one movement and another bar during its return movement.
Patent GB-577817-A (GB)
Title: Improvements in or relating to electrical supply apparatus
IPC: H02M7/10
Filed: 1939-10-13
Abstract: 577,817. Voltage modifying arrangements. BLUMLEIN, A. D., and NIND, E. A. Oct. 13, 1939, No. 27888. [Class 38 (iv)] An arrangement for obtaining from a D.C. generator a second voltage higher than that available at the terminals 5, 7 of the machine comprises a connection 1 from the armature through a commutator segment to a slip ring SR, the A.C. voltage thus obtained being utilized to charge a condenser C1 through a rectifier R1 and the condenser voltage being added to the normal voltage of the machine. In the arrangement shown, a second condenser C2 and rectifier R2 are provided to produce a voltage doubling effect, the derived voltage added to the normal machine voltage being available at the terminals 3, 5. Further condenser-rectifier stages may be provided to produce still higher voltages. The high voltage may be used for supplying cathode ray tubes in arrangements in which the normal generator voltage is used for supplying the amplifier valves used in association therewith.
Patent GB-752992-A (GB)
Title: Toy airplane construction
IPC: A63H27/22
Filed: 1954-09-27
Abstract: 752,992. Model aircraft. TESTOR, N. F. Sept. 27, 1954 [March 1, 1954], No. 27902/64. Class 4. A model aircraft comprises a moulded principal frame member 8 formed with a longitudinally extending groove or pocket 10 for the forward end of a tail stick 11, which is cemented in position, and laterally projecting bosses 28 formed with openings 29 to receive the root ends of the wings 30. The openings 29 are cambered lengthwise of the member 8 and inclined both from their rear ends and outwardly from the fuselage wall whereby the wing, when cemented in position, automatically assumes the correct chordwise camber and incidence and dihedral. Further slotted projections 20 are formed on the sides of the member 8 to accommodate the upper portion of the wire undercarriage 23, such portion being sprung into position so that it fits snugly round the member 8. A conventional tail unit and rubber-power means of propulsion are provided and the nose of the member 8 is bored at 14 to receive the propeller shaft 15.
Patent GB-442304-A (GB)
Title: Improvements in or relating to the extrusion of articles from natural or synthetic rubber
IPC: B29D99/00
Filed: 1934-09-29
Abstract: Rubber threads, tubes, &c. are made by extrusion of paste-like rubber latex mixtures and collecting on a moving belt.  The mix is so thick as to retain its shape during drying and vulcanizing. Chemical thickening agents such as sodium silicate and rubber solvents such as benzine, benzene, or naphtha may be used.  In an example, a mix consisting of 70 per cent latex 145 gms, zinc oxide 5 gms, sulphur 2 gms, tetramethyl thiuram disulphide 0,2 gms, oleic acid 0,5 gms, switch oil 5 gms, has 10 ccs. of a mixture of equal parts of water glass (Sp. gr. 1,2) with water, added, together with 10 ccs. of benzine, benzene or naphtha.  The mix is then extruded through a nozzle and collected on a belt, not necessarily closely adjacent, and is then dried and vulcanized.
Patent GB-1509677-A (GB)
Title: Preparation of anhydro-5-hydroxy-tetracycline
IPC: C07C233/00
Filed: 1976-07-06
Abstract: 1509677 5a,6 - Anhydro - 5 - hydroxytetracycline PLIVA PHARMACEUTICAL & CHEMICAL WORKS 6 July 1976 [14 July 1975] 28078/76 Heading C2C 5a,6 - Anhydro - 5 - hydroxy - tetracycline is prepared by dehydrating 5-hydroxy-tetracycline by means of a mixture of acetonitrile and sulphuric acid, isolating the reaction product in the form of its sulphosalicylate and treating the latter with a methanol/triethylamine mixture.
Patent GB-403788-A (GB)
Title: Improvements relating to sparking plugs
IPC: H01T13/05
Filed: 1932-10-10
Abstract: 403,788. Sparking-plugs. HOPPS, B., and LODGE, A. M., St. Peter's Road, Rugby. Oct. 10, 1932, No. 28156. [Class 7 (iv).] For preventing interference with radio apparatus the connection of a sparking-plug to its high tension lead is enclosed in a sleeve a of insulating material over which is sprayed a metallic coating c. An internally threaded and flanged collar e clamps the end of the sleeve to the plug casing b.
Patent GB-680965-A (GB)
Title: Monotower crane adapted for carriage or luffing-jib operation
IPC: B66C23/26
Filed: 1950-11-17
Abstract: 680,965. Cranes. CHANTIERS ET ATELIERS DE CONSTRUCTION DE LYON. Nov. 17, 1950. [May 13, 1950] No. 28160/50. Class 78 (iv). A crane comprises a tower with a jib hinged thereon and a carriage movable along a runway provided on the jib, the burden rope both lifts the load through the carriage, when the jib is locked in a horizontal position, and through a sheave block fixed to the free end of the jib when the jib is in an inclined position. A jib 1 is mounted on a hinge at 2 on the tower 3 and kept in a horizontal position by a tie rod 4. A carriage 6 is carried on a runway 5 and hoisting means comprises a hook 7 pulled by a burden rope 8. In order to lift the loads higher the carriage is locked near the tower and the snatch block 13 is fitted to the end of the jib after the burden rope has been passed along the path 8a. By pulling on the rope 8 the straps 9 of the hook 7 engage the jib and, after unlocking the tie rod 4, the jib is raised and then the tie rod is locked again. A cab 12 is adapted to move vertically inside the tower frame.
Patent GB-266029-A (GB)
Title: Improvements in or relating to thermionic valve amplifying arrangements
IPC: H04R3/00
Filed: 1925-11-09
Abstract: 266,029. Graham, E. A., and Paddle, L. H. Nov. 9, 1925. Thermionic amplifiers.-Relates to means for eliminating disturbances due in part to extraneous fields, and in part to reaction effects between the input and output circuits of a microphonic poweramplifier used for line-relaying or loudspeaker work. The output from the microphone 1 is applied to the grid of the first valve 4 through two separate transformers 5, 6 arranged so that the primary and secondary coils counterbalance any " pick-up " effects, the midpoints 16, 16a of the microphone pole-windings and the transformer windings respectively being connected to the filament battery 19 by a lead earthed at 2a. A similar arrangement is utilized for the intervalve transformer A connecting the first valve to subsequent stages of power amplification. Any back-feed energy due to induced potential differences between the input and output circuits of the system is stated to flow in opposite directions through the transformers and is thus neutralized. Where the microphone 1 is located at a considerable distance from the amplifier, the neutralizing lead 17 and the sheathing of the cable are both earthed.
Patent GB-712885-A (GB)
Title: Improvements relating to the racking mechanisms of flat knitting machines
IPC: D04B7/04
Filed: 1952-11-11
Abstract: 712,885. Knitting-machines. STOLL. H., STOLL, R., STOLL, H., STOLL, G., and STOLL, E.. [trading as STOLL & CO. H.] Nov. 11. 1952 [Nov. 29, 1951], No. 28382/52. Class 74(2) The cam 11 which effects relative shogging of the needle beds of a flat machine is controlled by a slide 1 carrying pawls 12, 13 which engage ratchets 16, 17 to effect reciprocation of racks 18, 19 to cause rotation of a pinion 9 connected to cam 11. Quadrant gears 29 controlled by patterning mechanism raise or lower bluffing members 15 which engage projections 12<1>, 13<1> to limit the engagement of pawls 12, 13 with ratchets 16, 17 thereby controlling the amount of rotation of cam 11. Pawl 12 is secured to a shaft 6 so as to rotate therewith and pawl 13 is freely rotatable on the shaft so that controlling members 22, 23, which are operated simultaneously, either render one or other of the pawls operative or inoperative as controlled by the dictates of the patterning mechanism.
Patent GB-366005-A (GB)
Title: Improvements in or relating to centerless grinders
IPC: B24B49/18
Filed: 1930-09-24
Abstract: 366,005. Centreless grinding. CINCINNATI GRINDERS, Inc., 3058, South Street, Cincinnati, Ohio, U.S.A. - (Assignees of Haas, F. S. ; 5809, Wayside Avenue, and Booth, C. ; 2980, Linwood Avenue, both in Cincinnati, Ohio, U.S.A.) Sept. 24, 1930, No. 28565. Convention date, Sept. 27, 1929. [Class 60.] Gauges; guides and rests.-In a centreless grinding machine of the through-feed type means are provided for gauging the workpieces as they emerge from the grinding throat, and if the work is over size due to wear of the wheels, for actuating means to feed in the regulating wheel towards the grinding wheel. The machine comprises a bed 15, Fig. 1, upon which are mounted a grinding wheel 16 and a slide 17 on which is mounted a work carrier 21, the slide 17 also carrying a second slide 19 supporting a regulating wheel 20 ; a clamp 23 serves to lock the slide 17 to the bed, and a clamp 24 to lock the slide 19 to the slide 17. The slides are movable by a screw 25 operable by a hand-wheel 27 and engaging a nut rotatably mounted in the slide 19, the nut being rotatable, through worm gearing either by a hand-wheel 33 on a shaft in a bracket on the slide 19, or automatically by a ratchet wheel 34, Fig. 6, operated by a pawl 42 carried by a disc 36. The disc has thereon teeth 37 engaging a rack 38 formed on a piston 39 in a fluid pressure cylinder 40 and movable under the control of a valve 80 operated in one direction by a spring 97 and in the other direction by a solenoid 75. The work 73 is supported by a rest 22 on the carrier 21 and, as it emerges from the grinding throat, engages a shoe 65 on a lever 64 carried by a spindle 63 mounted in a slide 51. The slide is adjustable by a rough-setting and micrometer device 54.. 57 on a portion 49 of a supporting bracket so that the shoe may be adjusted so as not to move when work of true diameter is passing thereunder, but to be dragged outwardly by over-size work. This outward movement swings a lever 67 on the spindle 63 to close the electric circuit of the solenoid 75 thus rotating the ratchet wheel 34 and feeding the regulating wheel nearer to the grinding wheel ; on the reverse stroke of the piston the movement is slowed down by an adjustable needle valve 93, Fig. 7, in the exhaust outlet 96. When the piston reaches the end of its feeding stroke a switch 76, Fig. 1, is opened by a rod 110 moved by a pin 107, Fig. 8 (not shown), on the piston, thereby deenergizing the solenoid ; the rod 110 is moved rapidly at the ends of its movements by a spring- pressed detent acting as a load and fire device. The stroke of the piston is adjusted by screws 115 ; the pawl 42 is lifted, on the reverse stroke of the piston, by a screw 45 which engages a bevel 44 on the pawl.
Patent GB-925088-A (GB)
Title: Improvements in or relating to stripping tools for electric cables
IPC: H02G1/12
Filed: 1959-08-21
Abstract: 925,088. Stripping cables. PYROTENAX Ltd. Aug. 21, 1959 [Aug. 25, 1958], No. 28666/59. Class 36. A tool for stripping sheathed cables-specially of the mineral-insulated metal sheathed type-comprises an operating arm A, which can be rotated about the cable C, whilst the latter is held against rotation, and which carries a blade D having a cutting edge D<SP>1</SP> lying in a transverse datum plane which is at right-angles to the cable axis within a tolerance of 12 degrees. This cutting edge projects outwardly from within the cable sheath at an angle such that the cutting force during rotation of the arm is exerted inwardly towards the body of the cable. The relief face of the blade which lies on the side of the blade remote from the stripped portion of cable is inclined to the transverse datum plane at an angle of less than 12 degrees on the same side as the abutment face of the blade D<SP>2</SP> so that the tool cuts in a helical path when it is rotated. The angle of the abutment face to the datum plane is preferably between 45 and 75 degrees. Specification 828,171 is referred to.
Patent GB-1433818-A (GB)
Title: Process for producing indan derivatives
IPC: C07C17/16
Filed: 1973-06-19
Abstract: 1433818 Cyclohexylindanecarboxylic acids, esters and amides TAKEDA YAKUHIN KOGYO KK 19 June 1973 [19 June 1972 21 Nov 1972] 29089/73 Heading C2C Compounds of formula wherein X is H or halogen and Y is OH, NH 2  or C 1-6  alkoxy, are prepared by subjecting the corresponding nitrile to hydrolysis, or to alcohol addition and subsequent hydrolysis. Starting materials for which preparative details are otherwise provided are p-(3-chloropropionyl)cyclohexylbenzene; 5 - cyclohexylindan - 1 - one; 5 - cyclohexylindan - 1 - ol and its tosylate; and the 1-chloro- and 1,6-dichloroderivatives of 5-cyclohexylindane.
Patent GB-766050-A (GB)
Title: Improvements in or relating to hydraulic presses
Inventor: LIGHTOWLER LESLIE ERNEST
IPC: B30B15/00
Filed: 1954-10-09
Abstract: 766,050. Hydraulic presses. LAYCOCK ENGINEERING, Ltd. Aug. 15, 1955 [Oct. 9, 1954], No. 29150/54. Class 69 (2). In a manually operated hydraulic press having a ram 2 and a work-table 6, a detachable connection is provided between the ram and the table so that, with the connection made, the height of the table may be adjusted by movement of the ram. The table is connected by cables 14 to a drum 18, and a sprocket 22 fast with the drum is engaged by a chain 24 which can be connected to the ram. When the chain 24 is not connected to the ram, the table is retained in position by pins 11, and the cables 14 are maintained under tension by a spring-loaded chain 25 which engages a sprocket 23 fast with the drum 18. Specification 766,049 is referred to.
Patent GB-171104-A (GB)
Title: Improved means for utilising ocean wave power
IPC: F03B13/24
Filed: 1921-11-03
Abstract: 171,104. McIlveen, J. Nov. 3, 1920, [Convention date]. Wave energy, utilizing.-One or more chambers A of the form shown are constructed open at E and continued by a pipe F provided with an air inlet valve J and delivery valve G. The difference in head and the surging of the waves causes air to be drawn in through the valve @ and delivered through the valve G to a receiver H. A common receiver is provided for a series of chambers A.
Patent GB-538591-A (GB)
Title: Improvements in and connected with steering gear for heavy trailers
IPC: B62D13/00
Filed: 1940-11-01
Abstract: 538,591. Steering trailer vehicles. NORTH, O. D., HUGH, P. G., and SCAMMELL LORRIES, Ltd. Nov. 1, 1940, No. 29304/39. [Class 79 (v)] Steering gear for heavy trailers comprises a hand-operated transverse screw shaft 15 mounted in fixed bearings in the trailer frame (not shown) and engaged by a nut 16 the axial movements of which are transmitted to the drawbar 21 to steer the trailer. In order to allow for the arcuate movement of the drawbar the nut is formed with radial arms 17 connected by detachable pivot pins 22 to a coupling block 18 slidably and pivotally mounted in a sleeve 19 on a vertical bolt 20 secured to the drawbar. In order to disconnect the hand steering gear the pins 22 are removed.
Patent GB-632169-A (GB)
Title: Improvements in or relating to superheterodyne receivers with automatic frequency control
IPC: H03J7/14
Filed: 1946-10-02
Abstract: 632,169. Automatic tuning correction. PHILIPS LAMPS, Ltd. Oct. 2, 1946, No. 29421. Convention date, April 16, 1943. Addition to 616,358. [Class 40 (v)] The parent Specification describes a superheterodyne receiver having an intermediate frequency portion comprising a filter sharply tuned to the intermediate carrier frequency, the tuning of the filter being influenced by an automatic frequency control arrangement to maintain agreement between the carrier frequency and the tuning of the filter, and in which the filter circuit comprises one or more oscillatory circuits with reduced damping and also forms part of the frequency dependent network. In the arrangement covered by the present Specification the tuned filter comprises an iron cored inductance which is influenced by the automatic frequency control the arrangebeing such that the stability and selectivity of the circuit are not affected by changes in the quality of the iron cored inductance. The Figure shows an I.F. amplifier valve 1 coupled to valve 4 via tuned circuits 2 and 3. The damping of circuit 3, which constitutes the sharply tuned filter, is reduced by means of feed-back from amplifying valve 4. The risk of self oscillation is reduced by negative feedback provided by resistance 8, this resistance being so arranged that it does not damp circuit 3. The output from valve 4 is applied through tuned circuit 9 to diode detector 11, and thence to low frequency amplifiers (not shown). Tuned circuit 12, diodes 13 and 14, in conjunction with the voltage applied from coil 16 constitute a frequency discriminator circuit whereby a frequency dependent control voltage is developed across resistance 15. This control voltage is applied to valve 17, thereby controlling the direct current passed through coil 18 which has the same iron core as coil 6, the latter forming part of tuned circuit 3. Due to the characteristics of the iron core, the tuning of circuit 3 may thus be modified within certain limits, so that it is maintained in agreement with the intermediate frequency. To avoid changes in the quality of tuned circuit 3, which may be introduced by the control effect, the coupling from valve 4 is tapped on to coil 6, whereby a compensating effect for any changes in coil 6 is introduced into circuit 3.
Patent GB-1360032-A (GB)
Title: 2-thio-5-azocytosine and its nucleosides
IPC: C07F7/08
Filed: 1971-06-23
Abstract: 1360032 2 - Thio - 5 - aza - cytosine and its derivatives SCHERING AG 23 June 1971 [23 June 1970] 29427/71 Heading C2C [Also in Division C3] The invention comprises novel 2-thio-5-azacytosine and nucleosides (I) thereof where Z is a protected sugar group; the compounds are made by reacting guanidyl thiourea with a trialkyl orthoformate and thereafter reacting the 2-thio-5-aza-cytosine so obtained sequentially with a silylating agent and then with a 1-0-acyl, 1-0-alkyl or 1-halogeno derivative of a protected sugar to form (I). Pharmaceutical preparations showing cytotoxic, antiviral, enzyme-inhibiting and antipsoriatic properties contain (I) as active ingredient ; administration may be locally.
Patent GB-1270454-A (GB)
Title: Reduction of halogen-containing silicon compounds
Inventor: CHALK ALAN JOHN
IPC: C07B61/00
Filed: 1969-06-10
Abstract: 1,270,454. Reduction of silicon-halogen compounds. GENERAL ELECTRIC CO. 10 June, 1969 [14 June, 1968], No. 29429/69. Heading C3S. [Also in Division C1] Compounds containing hydrogen attached to silicon are prepared by reduction of reducible silicon compounds having one or more siliconbonded halogen atoms and having one of the formulµ :-Si(X)a(R) 4-a,  wherein X denotes halogen, R denotes hydrogen, alkyl, alkenyl, aryl or aralkyl, a is an integer of from 1 to 4, m is 0, 1 or 2, and z is a whole number of at least 1, with sodium hydride in the presence of a hexaalkylphosphoramide, an octaalkylpyrophosphoramide, a tetraalkylurea or a mixture thereof, wherein each alkyl group contains from 1 to 4 carbon atoms. Exemplified starting materials are methyltrichlorosilane, dimethyldichlorosilane, ethyl methyldichlorosilane, vinyltrichlorosilane, phenylmethyldichlorosilane, phenyltrichlorosilane, benzyltrichlorosilane, allyl methyldichlorosilane, methyl cyclohexyldichlorosilane, 1,1 - dichlorotetramethyldisiloxane, 1,3 - dichlorotetramethyldisiloxane, hexachlorodisiloxane, sym - tetrachlorodimethylsiloxane, and 1,5-dichlorohexamethyltrisiloxane. The sodium hydride reactant may be employed in the form of a powder, as a coating on sodium chloride crystals or as a suspension in a non-reactive medium. In examples, phenyldimethylchlorosilane is reduced to phenyldimethylsilane, diethyldichlorosilane is reduced to diethylsilane, allyldimethylchlorosilane is reduced to a mixture of allyldimethylsilane and dimethyl-1-propenylsilane, triethylchlorosilane is reduced to triethylsilane, symmetrical tetramethyldichlorodisiloxane is reduced to tetramethyldisiloxane of the formula H(CH 3 ) 2 Si-O-Si(CH 3 ) 2 H, diphenyldichlorosilane is reduced to diphenylsilane, dimethyldichlorosilane is reduced to dimethylsilane, vinyldimethylchlorosilane is reduced to vinyldimethylsilane, and butyltrichlorosilane is reduced to butylsilane.  Uses.-As fuel additives, as intermediates for siloxanes and addition polymers, and for waterproofing fabrics.
Patent GB-1205668-A (GB)
Title: Punched card reader
IPC: G06K7/06
Filed: 1968-06-20
Abstract: 1,205,668. Card reader. AMP Inc. 20 June, 1968 [17 July, 1967], No. 29462/68. Heading G4M. [Also in Division H1] Insertion of a punched card in a slot 5, Fig. 2, releases a pressure plate 40 to urge the card against sensing members 164, Fig. 1B, which pass through holes 130 in an insulating plate 124. Plate 40 may have holes 44 corresponding to holes 130, whereby contact parts on the sensing members 164 make or break contact with conductors 132 on plate 124, or contact pads may be provided on plate 40 for co-operation with the ends of sensing members which pass through card holes. When a card is inserted, its lower edge engages lug 116 to release latch 108, and arms 35, Fig. 2, pivot counterclockwise to rotate cam 31 and urge pressure plate 40 to the left. The fact that plates 124, 40 are not joined allows sensing of cards with different thicknesses, though this is an optional feature. After the initial movement of plate 40 and making of contact between selected sensing members 164 and conductors 132, engagement of arms 35 with pins 74 pivots arms 68 counterclockwise, whereby cam 90 is moved to the right and cam surface 155 of frame 150 (to which plate 124 is attached) rides over first surface 102 and then surface 104. The consequent vertical reciprocation of plate 124 effects a double wiping of the contact parts of members 164 on conductors 132, the final contact positions being on pre-wiped portions of conductors 132. An adjusting screw 86 is provided so that the normal position of cam 90 may be shifted to the right with cam surface 155 engaging surface 104. Operation of the reader then causes surface 155 to travel over surface 104 and the top left-hand surface of cam 90 to effect a first wiping of the contacts, and a second, oppositely directed wiping is caused by deflection of the sensing members in the final movement of plate 40. The reader is reset by clockwise movement of lever 2.