baber/WOPTO huggingface dataset:
Patent GB-696444-A (GB)
Title: Improvements in or relating to variable speed power transmission
IPC: B60W30/18
Filed: 1948-02-05
Abstract: 696,444. Change-speed gear. CHRYSLER CORPORATION. Feb. 5, 1948 [Oct. 9, 1940], No. 1924/51. Drawings to Specification. Class 80 (ii). The subject-matter comprises part of that of the main Specification 696,411, but the claims are directed mainly to the arrangement of the centrifugal positive clutch which engages only on torque-release to provide a direct-drive, with overrun of a reducing gear-train in the countershaft gear unit (see Fig. 1 in the abridgment of the main specification). The main feature claimed is that the radially-movable centrifugal pawls are carried by the driving member, and the slotted shell which they engage is carried by the driven member. Specifications 696,442 and 696,443 also are referred to.
Patent GB-640102-A (GB)
Title: Improvements relating to alternating current generating systems
Inventor: HAMILTON RALPH FREDERIC GILBER
IPC: H02J3/46
Filed: 1948-01-22
Abstract: 640,102. Automatic control systems for generators in parallel; electricity supply. ROTAX, Ltd. Jan. 22, 1948, No. 1954. [Class 38 (iv)] Running generators in parallel.-In a generating system of the kind in which the distributing system is supplied from two or more parallel connected alternators c, each having associated with its field winding an automatic voltage regulator g of the carbon pile type, the equalizing coils f in the regulators are connected in series and subjected to a voltage proportional to the difference between the respective output currents of the alternators so as to balance the loads on the alternators, the current required by the equalizing coils being derived through a rectifier e from a current transformer a, b associated with each alternator. The equalizing coils may be connected to the associated rectifiers through a variable resistance such as a potentiometer h to permit adjustment of the voltage applied. In the case when the distributing system is supplied from the alternator through a boosting transformer, and if necessary a rectifier d, the current transformer may be connected in either the primary or secondary circuit of the boosting transformer.
Patent GB-113004-A (GB)
Title: Improvements in Apparatus for the Production of Weft Spools or Cops on Weft Ring Spinning Machines.
Inventor: CHANE MAURICE
IPC: B65H54/14
Filed: 1917-02-09
Abstract: 113,004. ChanÚ, M. Feb. 9, 1917. Addition to 109,242. Driving-arrangements.-In apparatus of the kind described in the parent Specification, the roller-driving gear 5 is mounted on a sleeve 1 on the roller shaft 2 and is driven from the shaft 2 either directly through the clutch 8<1>, 4 or indirectly through the clutch 8, 11 and the gears 6, 7, 10. The clutch parts 8, 8<1> are connected together and slide upon the shaft 2 to disengage the one clutch and engage the other. The gear 5 may be in two parts to facilitate exchange, and the drive takes place through gears 10<1>, 5', the latter being fixed on the sleeve 1. The lever which actuates the clutch 8, 8<1> is mounted to move in the reverse direction to that described in the parent Specification and the engagement of the lever and the holding catch is effected by the belt-shifting fork on the stoppage of the frame.
Patent GB-1287595-A (GB)
Title: Copying apparatus
IPC: G03B27/62
Filed: 1970-01-15
Abstract: 1287595 Electro-photographic apparatus INTERNATIONAL BUSINESS MACHINES CORP 15 Jan 1970 [29 Jan 1969] 2014/70 Heading G2H A xerographic copying machine has a reciprocating document carriage 13, Fig.3 for original documents to be copied and a cover 78 hinged to the carriage. An outer cover 14 is hinged at 16 and (18) Fig. 1 (not shown) to the top 12 of the machine. When the carriage 13 is in home position a roller 76, Fig.3, on a lever 70 pivoted on the cover 14 engages a flange 82 of the cover 76 to permit simultaneous raising of the covers. A mechanism (20) Fig. 1 (not shown) comprising a one-way clutch (41) Fig.4a (not shown) provided with a helical clutch spring (46) and spring tensioned pulley 59, Fig.3, acts to counterbalance movement of the cover 14, such that the cover will be maintained at whatever position it is left in. Downward movement of the cover is resisted by frictional braking of the spring (46) which is overcome by pressure exerted by the operator to effect closing. Raising of the cover is assisted by the spring tensioned pulley 59. Closure of cover 78 is prevented when oversize documents are placed on the carriage, thereby preventing movement of a handle 22 into latching position to inhibit starting of the machine and consequential jamming of the carriage.
Patent GB-510666-A (GB)
Title: Improvements in or relating to the manufacture and use of high molecular weight sulphur-containing condensation products
IPC: C08G75/16
Filed: 1939-01-20
Abstract: 510,666. Condensation products. SILESIA VEREIN CHEMISCHER FABRIKEN. - Jan. 20, 1939, No. 2053. Convention date, Feb. 1, 1938. [Class 2 (iii)] High molecular weight sulphur-containing condensation products are prepared by reacting solutions of water-soluble inorganic polysulphides with organic compounds carrying negative residues on at least two linkages in admixture with not more than 10 per cent. of organic compounds carrying only one negative residue, the negative residues being those that are capable of reacting with inorganic polysulphides. Suitable compounds containing only one negative residue include ethyl chloride, allyl chloride, ethyl bromide, benzyl chloride, acetyl chloride, benzoyl chloride, acetic acid anhydride, methyl sulphate, acetic acid or compounds containing a mercaptan or thiosulphuric acid group. The products, if desired, in the form of solutions or suspensions, with or without the addition of fillers such as zinc oxide, cement, chalk, kaolin, lampblack, red iron oxide, red lead, aluminium powder or colcothar may be used as adhesives, cements, coatings and impregnants. In examples a mixture of ethylene chloride and ethyl chloride or bromide, benzyl - bromide, acetic acid anhydride, benzoyl chloride or glacial acetic acid is reacted with an aqueous solution of sodium tetrasulphide in the presence of freshly precipitated magnesium hydroxide.
Patent GB-242125-A (GB)
Title: Improvements in or relating to pressure relief valves
IPC: F01B25/00
Filed: 1925-01-23
Abstract: 242,125. Rees, T. A. Jan. 23, 1925. Safety valves.-A relief valve particularly adapted for releasing water from engine cylinders and of the type opened again the pressure by fluid pressure under the control of an auxiliary valve has the loading spring of the auxiliary valve arranged in the hollow spindle of the main valve. The main valve D is coupled by a hollow spindle D<1> to a piston I of slightly greater area and is normally held to its seat by inlet pressure assisted by a spring K. The auxiliary valve E seats on the piston and is loaded by a spring G acting through a, tension rod F. The stem of the auxiliary valve and the tension rod pass to the outside of the casing where they are adjustably connected by nuts H. A groove M is provided to exhaust the pressure from the actuating cylinder.
Patent GB-498362-A (GB)
Title: Improvements relating to telephone systems
IPC: H04M9/00
Filed: 1938-01-21
Abstract: 498,362. Intercommunication systems. GRAHAM & CO., Ltd., A., and VAUGHAN, C. H. Jan. 21, 1938, No. 2088. Drawings to Specification. [Class 40 (iv)] In an intercommunication system employing a common calling and speaking battery, in order to guard against overhearing, the connection of the receiver to an external circuit is dependent on the operation of a selecting key or on the receipt of calling current from another station, and in the former case the connection is immediately opened by a guard relay if the wanted station is engaged. The circuit arrange - ment described is identical with that in Specification 493,876.
Patent GB-468825-A (GB)
Title: Improvements in or relating to split-anode magnetrons
IPC: H01J19/28
Filed: 1937-01-25
Abstract: 468,825. Magnetrons. LORENZ AKT.- GES., C. Jan. 25, 1937, No. 2210. Convention date, Jan. 24, 1936. [Class 39 (i)] A split anode magnetron comprises a ceramic envelope. A ceramic support for each division of the anode may be employed and a Lecher wire system may be connected to the anode divisions, the Lecher system and anode divisions resting against the wall of the envelope. In one form, Fig. 1, a ceramic tube 1 is closed by covers 2, 3 sealed on by molten glass 17, and supports two anodes 4 resting against it or consisting of burnt-on and sprayed on or plated silver. A pumping tube 8 of glass is sealed into the wall. The cathode may be a metal-coated ceramic bar. The walls may be internally recessed, Lecher wires formed by metal coatings on the walls of the recess being connected to the anodes. In a modification, Fig. 5, four anode parts 14 are shrunk on ceramic tubes 15, and glass sealing rings &c. are fused on at 17, the faces 26 of the envelope 1 being flattened adjacent these rings. In a modification the portions 16 are replaced by metal coatings, on the tubes 15, which serve as leads. Opposite anodes may be connected together by bridge pieces housed in recesses in the alternate anodes.
Patent GB-394606-A (GB)
Title: Packing device for elastic fluid turbines
IPC: F01D5/04
Filed: 1933-01-24
Abstract: 394,606. Stuffing-box substitutes; turbines. FAIR WEATHER, H. G. C., 65, Chancery Lane, London.- (Allmanna Svenska Elektriska Aktiebolaget ; Võsteras, Sweden.) Jan. 24, 1933, No. 2256. [Classes 110 (iii) and 122 (v).] . In a radial-flow elastic-fluid turbine the packing between the blade wheel 1 or each blade wheel and the steam chest 13 comprises axially extending intermeshing sleeves 6, 7 carried respectively by the wheel and chest and surrounded by a labyrinth packing 9 having a radial leakage passage. The sleeves 7 may be grooved and sleeves 6 provided with shrunk-on labyrinth rings. The sleeve packing may be housed in a recess in the wheel 1. Alternatively the sleeves 6 may be secured to a disc 10 attached bv bolts 16 to the wheel 1. The recess for bolt heads 16 is covered by a ring 17 carrying blades 2.
Patent GB-1091900-A (GB)
Title: Improvements in or relating to switching current to an inductive load
IPC: H03K17/73
Filed: 1966-01-18
Abstract: 1,091,900. Switching arrangements for electromagnets. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 18, 1966 [Jan. 21, 1965], No. 2308/66. Heading H2H. Rapid energization and de-energization of an inductive load L, for example the coil of an electromagnet, is obtained by the circuit shown in Fig. 3 in which diodes D 1 , D 2  allow the stored energy in coil L to charge a capacitor C when a thyristor Th 3  is turned off to interrupt the D.C. supply E 1 , and thyristors Th 1 , Th 2  are fired coincident with or just prior to the firing of thyristor Th 3  to allow the capacitor C to discharge through the coil L to assist the supply E 1 . Thyristor Th 1  may be omitted if the firing instants are coincident. If the coil has a large ohmic resistance a second capacitor C 1  is provided and is charged through a series-resonant voltage-doubling circuit from a source E 2  to a voltage smaller than that across capacitor C, the capacitor C 1  assisting capacitor C when the latter discharges through the coil L. Thyristor Th 3  is switched off by a blocking capacitor C 2  associated with control and coupling members R, Th 4 , Tr 1 . A typical operating sequence for the coil L is described, Fig. 2 (not shown).
Patent GB-286421-A (GB)
Title: Improved machine for cutting tobacco and for feeding tobacco into cigarette making machines
IPC: A24B7/04
Filed: 1927-01-26
Abstract: 286,421. Legg, O. Jan, 26, 1927. Cutting tobacco.-The, machine comprises, in combination, means for conveying leaves from a receptacle to a first cutting point, a device for cutting the leaves into strips, means for transferring the strips to a second cutting point, and a device for cross-cutting the strips into short lengths. Leaves are placed in a receptacle 4, the bottom of which consists of an endless band 5 driven to feed the leaves against a rotating perforated drum 2. A funnel 13 inside the drum communicates with the inlet of a suction fan 11 by which the leaves are sucked against the drum, loose leaves being brushed off by a device 30. A number of rocking arms 16 each carry a rotary cutting blade 17 by which the leaves are cut into strips. The outlet 14 from the fan frees the strips from the drum, and they are directed by a scraper 21 to a ledger blade 22 surmounted by guide rollers 25. The strips are then cut into short lengths by a roller 26 with inserted rib cutters, and fall into a shoot 29. A travelling apron may be substituted for the drum 2, and a reciprocating knife for the roller 26. In a modification, the leaves may be conveyed between a pair of travelling aprons to a cutting device comprising a pair of intercalated male and female cutting rollers backed by a ledger blade.
Patent GB-524205-A (GB)
Title: Improvements in or relating to hair-waving clips for water waving
IPC: A45D2/44
Filed: 1939-01-23
Abstract: 524,205. Hair-waving appliances. STRIEBEL, A. Jan. 23, 1939, No. 2345. Convention date, Jan. 24, 1938. [Class 131] A hair-waving clip for water waving comprises a fixing comb a<SP>1</SP> and a sliding comb a connected together by wire loops intertwined to permit relative movement and held frictionally. The loop carrying the comb a is bent as at b, c.
Patent GB-430833-A (GB)
Title: Improvements in conveyor furnaces for heating metal sheets or plates
IPC: F27B9/24
Filed: 1934-01-24
Abstract: 430,833. Roller-way conveyers. FALLON, J., British Mills, Cornwall Road, Smethwick, near Birmingham. Jan. 24, 1934, No. 2419. [Class 78 (i)] [See also Group XII] In a continuous furnace for heating metal sheets or plates having a roller-way conveyer comprising a series of rollers a geared together for rotation at uniform speed, electrically operated means are provided for imparting, at intervals, a high ejecting speed to a variable number of rollers a<1> ... a<10> at the discharge end of the furnace. The driving shaft d is connected at one end to the main motor e and at the other end to a high speed ejecting motor f a number of freewheel clutches d<1> being provided to allow the determined number of the ejection group of rollers to be forwardly over-run at high speed. The rollers a<5>, a', a<9> of this group are earthed while the intermediate rollers a<4>, a<6>, a<8>, a<10> are insulated and connected to a contactor in the circuit of a motor operating the vertically-sliding discharge door j, control switches being provided so that the number of rollers to be speeded up can be varied in accordance with the length of the plates being treated. The short circuiting, by the forwardly moving metal sheets, of adjacent rollers in the ejection group effects starting up of the motor operating the door j, the latter, on reaching its fully raised position, closing a contactor to switch in the high speed motor f and thus speed up the determined number of ejection rollers. When the sheet being ejected bridges the last two rollers a<1>, a<2>, a coil is energized to open a switch in the circuit of the dooroperating motor and allow the door to close ; during this closing movement the door actuates a further switch to cut out the motor f. Handoperated switches are provided to allow of non-automatic speeding up of the ejection rollers and to permit emergency stoppage and restarting of the entire conveyer. Specification 429,626, [Group XII], is referred to in the Provisional Specification.
Patent GB-213717-A (GB)
Title: Improvements in and relating to furnaces for steam generators and the like
IPC: F23H11/10
Filed: 1923-01-27
Abstract: 213,717. London Electric Supply Corporation, Ltd., and Fox, A. G. Jan. 27, 1923. Air supply, regulating; ash-pits.-In a furnace having a travelling grate with V-shape chambers a, Fig. 1, beneath, to which air is supplied under pressure, ashes and the like are removed from the chambers by means of rotatable cylindrical drums g which prevent the escape of air from the chambers. The drums are provided at the ends with sprocket wheels k adapted to engage with the return run of the grate to effect their rotation. Instead of rotary drums, sealing-devices consisting of two alternately operated shutters may be provided. Fig. 3 shows a modification in which the transverse chambers a are supplied with air from a conduit c leading to a central longitudinal conduit communicating with transverse pockets a<1>, the supply of air to the chambers a being controlled by dampers d'. In the modification shown in Fig. 5, the air enters a conduit c and passes to a central conduit c<1> and tranverse chamber p beneath the grate. Dampers u, t control the admission of air from the chamber p to chambers q, s respectively at the front and rear of the grate.
Patent GB-906720-A (GB)
Title: Improvements in clothes washing machines
IPC: D06F37/04
Filed: 1959-01-23
Abstract: 906,720. Washing-machines. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Jan. 23, 1959 [Feb. 4, 1958], No. 2644/59. Class 138 (2). A rotatable drum for a clothes washing machine is assembled from two or more non- perforated flanged sheet-metal parts, one or more of the flanges being locally deformed so that they are in contact with each other and secured at spaced-apart points in the periphery of the drum, the gaps between them providing passages for washing liquid and one of parts being connected to an axle for rotating the drum. As shown in Fig. 1, a drum 1 has end-plates 2 with a space J between their periphery and the drum with indented portions la engaging recesses 2a in the plates. The plates are connected to the drum by riveting or soldering. Different forms of drums such as biconical, conical or cylindrical may be made and one of the plates may also include a charging aperture. The passages J may also be arranged perpendicular to the axis of rotation of the drum.
Patent GB-883482-A (GB)
Title: A novel acetylenic dihalogen compound and a process for the manufacture thereof
IPC: C07C21/22
Filed: 1959-11-25
Abstract: Lithium amide is prepared by adding lithium wire to liquid ammonia, using powdered hydrated ferric nitrate and a blast of air to catalyse the initial reaction.ALSO:The invention comprises 1-bromo-9-chloro-nonadiyne-(2,5) and its production by condensing 1-bromo-6-chloro-hexyne-2 in a Grignard reaction with propargyl alcohol or a hydroxyblocked propargyl alcohol, to produce 1-hydroxy-9-chloro-nonadiyne-(2,5) or a hydroxy-blocked derivative, splitting off the blocking group if present, and reacting the hydroxy compound with a brominating agent, e.g. PBr3, HBr or SOBr2.  The first step may be effected by reacting propargyl alcohol with somewhat more than twice its molar proportion of a Grignard reagent (the extra mole serving to block the hydroxy group), or by reacting 2-propargyloxy-tetrahydropyran with somewhat more than one molar proportion of a Grignard reagent, in an inert solvent containing sufficient tetrahydrofaran to render the resulting magnesium compound soluble, and reacting this compound with 1-bromo-6-chloro-hexyne-2 in the same solvent in the presence of a cuprous salt.  The blocking group, if present, e.g. the tetrahydropyran radical, may be removed by acid-catalysed alcoholysis, e.g. with methanol and p-toluenesulphonic acid.  1-Bromo-6-chloro-hexyne-2 can be obtained by reacting a hydroxy-protected propargyl alcohol, e.g. 2-propargyloxy-tetrahydropyran, with 1-bromo-3-chloro-propane in an argano-lithium reaction to form the hydroxy-protected 1-hydroxy-6-chloro-hexyne-2 the protecting group is split off, e.g. the tetrahydropyran radical by acid-catalysed alcoholysis, e.g. with methanol and p-toluenesulphonic acid, to give 1-hydroxy-6-chloro-hexyne-2, which is brominated, e.g. with PBr3, HBr or SOBr2.
Patent GB-764058-A (GB)
Title: Process for the production of cyclopentadienyliron and lower alkyl derivatives thereof and products obtained by the process
IPC: C07F17/02
Filed: 1955-01-31
Abstract: A gaseous mixture of hydrogen or carbon monoxide or a mixture of these gases and cyclopentadiene or its C1-C4 alkyl derivatives is passed over ferric oxide at a temperature of about 275 DEG -400 DEG C. and the vapours of the dicyclopentadiene iron compound which is produced are condensed.  The cyclopentadiene or its alkyl derivative may be used as the dimer.  In an example a mixture of ferric oxide and glass beads is placed in a horizontal reactor tube which is heated in an electric furnace.  A mixture of hydrogen and cyclopentadiene is passed therethrough and the dicyclopentadienyl iron condensed in a flask at the exit end of the reactor tube. Example 2 describes the preparation of bis-(methylcyclopentadienyl) iron.  Specifications 733,129 and 737,780 are referred to.
Patent GB-965058-A (GB)
Title: Improvements in coin-freed apparatus
IPC: G07F15/12
Filed: 1963-01-24
Abstract: 965,058. Coin-freed apparatus. S. R. SMITH. July 11,1963 [Jan. 24, 1963], No. 3011/63. Heading G4V. The coin-pocket of a coin-freed apparatus of the type described in Specification 965,057 which is referred to, comprises a pair of parallel coin housings which are arranged to receive coins c, C of two different diameters and project from a base disc mounted for rotation within a barrel 2 at the rear of a time period setting plate 4, a pair of coin slots in the plate which register with the coin housings when the pocket is in its zero position and a discharge slot 17 in the barrel having a stepped edge arranged so that the barrel will retain its counter-pressure on the spring-urged small diameter coin c while that coin travels past the step but frees the counter-pressure on the spring-urged larger diameter coin C while that coin travels past the step. The effect of this arrangement of the step is to neutralise the fact that the larger coin housing is disposed in advance of the small coin housing by the angle # by rendering the larger coin C ineffective for this angle # over the discharge slot 17. Both the small and larger coins will be ejected through the slot on reaching the edge 51 but, before reaching this edge, the larger coin will clear the internal diameter of the barrel on reaching the edge 50, as shown in Figs. 10 and 11, thereby releasing the operative finger 9 engaging the setting wheel 7.
Patent GB-396392-A (GB)
Title: Improvements in and relating to ladders, step ladders or pairs of steps
IPC: E06C7/44
Filed: 1932-02-01
Abstract: 396,392. Ladders. HAMPTON, E. J., 38, Pleasant Place, Cliftonville, Kent. Feb. 1, 1932, No. 3030. [Class 20 (ii).] A step ladder is adapted for use on stairs by varying the relative lengths of the ladder portion and rear prop by the provision of slots 7 in the sides of the rear portion to engage bolts 6 projecting from the tops of the sides of the front portion. Pivoted stays 10 may be provided on the inner portions of the sides of the rear prop.
Patent GB-560586-A (GB)
Title: Improvements in or relating to telephone transducers
IPC: H04R1/04
Filed: 1943-02-26
Abstract: 560,586. Telephone instruments and sets. STANDARD TELEPHONES & CABLES, Ltd. Feb. 26, 1943, No. 3166. Convention date, April 13, 1942. [Class 40 (iv)] [Also in Group XXXVI] A telephone instrument or hand-set has a conductor cord 5 with parallel conductors located in a channel 4 at the base of a cavity 2, 3 for the transmitter 6 or receiver 7, prongs 10, 11 on the transmitter or receiver being adapted to be forced into the cord to make contact with the proper conductor, e.g. by screwing on the cap 8 of the transmitter or receiver. Ribs 14, 15 on the transmitter or receiver engage grooves in the cavities to ensure correct positioning of the prongs. The transmitter or receiver may have projections 18 on its base to engage and compress the cord on each side of the prongs.