baber/WOPTO huggingface dataset:
Patent GB-214863-A (GB)
Title: Improvements relating to electric switches
IPC: B60R16/00
Filed: 1923-06-07
Abstract: 214,863. Ellis, R. G. June 7, 1923. Switches, without quick action; press-button switches; handles; contacts; switchboards.-A switch for use in motor vehicles &c. comprises a flat base of insulating material a having spring blade contacts d provided on one or both sides of the base and a slidable contact bar m accommodated in a longitudinal hole or slot c in the base a. The contact springs d are secured in transverse slots b intersecting the hole c, the slots on one side of the base being intermediate those on the other side. Some of the strips are extended to form terminal pieces e and others are attached to a bus bar f. In addition to the switch contact strips dare other strips k which serve as terminal pieces and are attached to a second bus bar l. As the rod m is moved into the hole c it contacts with the overhanging ends of the strips d, Fig. 3, so controlling the various circuits on the motor vehicle. The bar m may be completely removable and may be of non- circular section the hole or slot being correspondingly formed. When the switch is combined with fuses in the various circuits, Fig. 8, the fuses p are connected between strips d and terminal portions e. If the switch is used as a headlamp dimming switch a spring n, Fig. 15, may be provided to return the bar m after it has been depressed to bring the reduced portion of the bar oppositer the upper contacts.
Patent GB-857925-A (GB)
Title: Improvements in refrigerator locks
Inventor: LOCK WALTER
IPC: E05B13/10
Filed: 1957-04-03
Abstract: 857,925. Latches. FINGSCHEIDT G.m.b.H., F., April 3, 1957, No. 14972/60. Divided out of 857,924. Class 44. Relates to a lock of the kind comprising a twoarmed forked latch member 7 rockable about a fixed pivot 6 in a housing adapted to be fastened on a door and which latch member by pivotal interposition of a rockable holding means 9 carrying a spring 13, is operated by a two-armed operating lever 2. According to the invention, the latch member 7 is rockably mounted in a housing 5 adapted to be fitted in the door and is articulated by means of a link 20 to the spring holding means 9 rockably mounted in another housing 1 fastened on the door, while a common articulation point 17 for the link 20 and the holding means 9 is provided on one arm of a two-armed lever 19 rockably mounted in the second housing 1 so that when the operating lever 2 is rocked away from the door a short lever arm of the operating lever 2 rocks the other arm of the two-armed lever whereby the common articulation 17 point is rocked from a position it occupies on one side of a dead-centre position into a position on the other side of the deadcentre position. As shown, the other end of the holding means 9 is pivotally and slidably mounted on a pin 15 fixed in the housing 1. The arrangement is such that during movement of the handle 2 away from the door to open the latter, the holding means 9 slides on the pin 15 which engages a slide 14 to compress the spring 13 and maintain the latch member in the open position until it is rocked by the keeper 8 as the door is re-closed. The latch member may be locked in the engaged position by a locking device 22.
Patent GB-1066162-A (GB)
Title: Poly(ethylene terephthalate)
Inventor: DAVIES TREVOR
IPC: C08G63/80
Filed: 1965-04-08
Abstract: Polyethylene terephthalate of relative viscosity not less than 2.35 (measured as a 1% solution in dichloracetic acid at 25 DEG  C.) is made by maintaining particles of polyethylene terephthalate of relative viscosity not less than 1.65 at an elevated temperature and at a combined partial pressure of reaction products of less than 2 mm. of Hg.  The solid phase polymerized polyethylene terephthalate may be melted, ground and then subjected to a further solid phase polymerization.  The particles of polyester may be in the form of cubes, rectangular parallellpipedons, cylinders or spheres and preferably have dimensions of 0.8 to 4 mm. The reaction may be effected at a total pressure below 2 mm. of Hg or at a higher pressure with a suitable flow of an inert gas (e.g. carbon dioxide, sulphur hexafluoride, nitrogen or methane) or an inert liquid which is gaseous at the reaction temperature (e.g. benzene, trichlorotrifluoroethane or toluene).  The reaction may also be effected under fluidized bed or teeter bed conditions.  The gas recirculated to the bed may be purified (a) by absorbing all impurities in a molecular sieve, (b) by absorbing only the water in a molecular sieve and recirculating only a major proportion of the gas, that removed being replaced by fresh gas, (c) by removing some of the impurities in a molecular sieve and the remainder in active charcoal, or (d) by heating the whole or part of gas to decompose ethylene glycol into water vapour and inert products and absorbing the water vapour and other volatile and involatile materials before the gas is recirculated.  In examples the polyethylene terephthalate to be further polymerized is made by reacting dimethyl terephthalate with ethylene glycol in the presence of calcium acetate or a mixture of manganous acetate and strontium acetate and polycondensing the product in the presence of antimony trioxide, phosphorous acid and, possibly, titanium dioxide.
Patent GB-420230-A (GB)
Title: Improvements in and relating to alternating current dynamo electric machines
IPC: H02K27/12
Filed: 1933-05-24
Abstract: 420,230. Alternating - current commutator machines. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hull, J. I.; 9, Lawrence Road, Beach Bluff, Swampscott, Massachusetts, U.S.A.) May 24, 1933, No. 15017. Convention date, May 25, 1932. [Class 35] A polyphase self-exciting commutator machine of the type having the exciting windings energized from, and the commutator brushes directly connected to, the polyphase busbars is provided with means whereby the time phase of the voltage impressed upon at least one exciting winding can be changed by an angle equal to the angle of phase difference between succeeding phases, the change preferably being capable of being made continuously so that voltages of intermediate time phase can be impressed on the exciting winding. Fig. 1 shows a machine in which the brushes 11, 12, 13 are connected through switches 38, 39 to resistances 35, 36, 37 provided with moving contacts 40, 41, 42 connected to the outer ends of the pairs of windings 28, 31 ; 29, 32 ; 30, 33 respectively. In this way the voltage from the brush 11 can be supplied either to the windings 29, 32 or to the windings 30, 33 or distributed between the two sets and in the same way for the other brushes. The windings 28, 29, and 30 are wound on poles 26 so proportioned as not to become readily saturated and the windings 31, 32, 33 on poles 27 which are readily saturated. By means of switches 43 either all the windings or only the windings 31, 32, 33 may be connected. The inner ends of the windings are connected to a neutral point. The following modifications are described. (a) Only the windings 28, 29 and 30 are connected to the contacts 40, 41 and 42, the windings 31, 32 and 33 being connected directly to the polyphase busbars and to a neutral point through adjustable resistances : (b) that shown in Fig. 3, in which the resistances 35, 36, 37 are dispensed with, the phase of the voltage supplied to the windings 28, 29, 30 being changed by a switch 60 and the polyphase busbars being connected to the windings through adjustable tappings 61, 62, 63 on resistances 59 and (c) the resistances 35, 36, 37 are dispensed with and the windings 31, 32 and 33 are connected to the windings 28, 29, 30 through a switch such as 60, the windings 28, 29, 30 being shunted by variable resistances.
Patent GB-964293-A (GB)
Title: Soft package and method for its production
Inventor: SCHWARZ HANS
IPC: B65D5/02
Filed: 1962-04-18
Abstract: 964,293. Cartons. K. KÍRBER. April 18, 1962, No. 15038/62. Heading B8P. A cigarette package 10, Fig. 2, is formed from a blank, Fig. 3, having fold lines 15- 18, slits 19-22, and gummed portions 30-33, the bottom of the package being so formed that the narrow flaps 25, 26 are covered by the wide flaps 23, 24 the shorter edges of which are flush with the edges of the package. The portion 28 of the flaps may be reduced to a shorter flap 29, ending at 29a, in order to prevent undue overlapping of the bottom members.
Patent GB-1118898-A (GB)
Title: Fluid flow machine
Inventor: LITTLEFORD FRANK
IPC: F01D5/02
Filed: 1967-04-03
Abstract: 1,118,898. Turbine and compressor rotors; jet propulsion plant. ROLLS-ROYCE Ltd. April 3, 1967. No. 15224/67. Headings F1J and F1T. A fluid flow machine, such as a compressor or turbine of a gas turbine engine or a ducted fan driven thereby, has angularly spaced rotor blades 15 extending radially outwardly from a sleeve member 16, an inner sleeve 23 inter-meshing with the sleeve 16 to transmit drive therebetween and a hub member 25 mounted concentrically within the inner sleeve 23 and connected thereto by angularly spaced struts 24, the angular spacing between adjacent struts 24 being substantially greater than that between adjacent blades 15. In the case shown, the blades 15 from a front fan of a gas turbine jet propulsion engine and are shaped to effect substantially constant work from their roots to their tips on the air passing through the fan. The blades may be of epocy or other synthetic resin. The sleeve member 16 is formed of carboniferous, boron or glass fibres coated with synthetic resin or coated with a nickel-chromium alloy. The sleeve 16 has angularly spaced inserts 20 embedded therein having teeth 21 meshing with corresponding teeth 22 on the inner sleeve 23 to provide a driving connection between the sleeves. Except in the regions of the teeth, the sleeves are radially spaced apart to permit limited radial movement therebetween. The struts 24 connecting the inner sleeve 23 to the hub 25 are of aluminium and are shaped to do no work on the air flowing there past. The hub 25 is driven through a coupling 26 and shaft 27 from the engine turbine.
Patent GB-182299-A (GB)
Title: A new or improved lock or device for preventing theft or unauthorised use of a motorcycle
IPC: B62H5/06
Filed: 1921-06-02
Abstract: 182,299. Phillips, A. E. June 2, 1921. Locking while standing.-Comprises a locking- device for preventing theft of motor-cycles, in which an arm 1 pivoted at 5 to the steering-head, its other end being forked to engage the top tube of the frame, is provided with a spring-actuated locking-bolt 9, so that when the arm is depressed to engage the top tube, as shown in broken lines in Fig. 1, the end of the bolt presses flat against the steering-head and prevents the arm from being raised free of the top tube. When the bolt is fully extended, as shown in Fig. 5, it is locked in that position by a pin 11, which is turned either by hand or automatically by a spring. To release the pin 11, it is turned by means of a key-operated lock 16 until a flat face 12 on the pin aligns with a flat face 14 on the bolt 9. In a modification, the arm 1 is pivoted on one of the frame tubes, its other end engaging the steering-head or a part fixed thereto.
Patent GB-743224-A (GB)
Title: Method of refining fine grained iron oxide material, for example, roasted pyrites
IPC: C22B1/08
Filed: 1953-06-04
Abstract: Copper, zinc and other metallic sulphides are removed from fine grained ferric oxide materials such as roasted pyrites enriched by flotation and containing 1-2 per cent of sulphur by treating at 500-1000 DEG C., e.g. 600-800 DEG C., with chlorine diluted, preferably with air or a non-reducing gas to such a concentration (e.g. 1-10, preferably 2-3 per cent by volume) that copper, zinc and other metals volatilize as chlorides, together with sulphur, whilst the iron remains unaffected by the chlorine.  The ferric oxide product may be reduced to magnetite in a subsequent stage, but preferably the reduction is carried out simultaneously by mixing iron sulphide with the materials in an amount such that the sulphur content of the mixture does not exceed 3.5 per cent and in practice usually is between 2.5 and 3.5 per cent, preferably at about 900 DEG C. in an atmosphere comprising CO2, or SO2 formed in the process. The Specification also refers by way of comparison to treating the ferric oxide materials at 900-1100 DEG C. with metal chlorides such as NaCl, MgCl2 and FeCl3 replacing chlorine.  Suitable apparatus comprises a rotary furnace having longitudinal shelves whereby intimate contact is promoted.
Patent GB-732553-A (GB)
Title: Improvements in and relating to irrigation pipe line couplings
IPC: F16L37/54
Filed: 1952-06-19
Abstract: 732,553. Pipe couplings. WRIGHT, C. S. March 18, 1953 [June 19, 1952], No. 15453/52. Class 99 (1). A coupling, particularly for irrigation pipe lines, wherein connection and disconnection can be effected by manipulation of the pipe at a distance from the coupling, comprises a pivoted latch 14, carried by the pipe 9, and having a T-head 13, the inclined front face 17 of which is adapted to ride up and over a pair of spaced lugs 11 on the coupling body 1 into which the pipe is pushed, the shank of the latch falling between the lugs and the head behind them. For release the pipe is pushed further into the body whereby the forward part of the latch is raised clear of the lugs by engagement of a cam portion 18 of the latch with a shoulder 13a of the body. The pipe is then rotated, until the latch is clear of the lugs circumferentially, and withdrawn. A cupleather 7 having an extended skirt 8 embracing the pipe is located in a recess in a terminal bead or flange 5 of the body, there being a substantial clearance 8a between pipe and body wall. An aligned pipe 9a may be similarly connected to the coupling body or it may be pivotally secured to a bracket 21 extending from a branch pipe outlet 3. An anchoring foot 10 may be provided on the body.
Patent GB-755279-A (GB)
Title: An improved method for decreasing the amount of aluminium and calcium in silicon metal or ferro-silicon alloys
Inventor: BRENNAN JOSEPH HARRISON
IPC: C01B33/037
Filed: 1954-05-26
Abstract: Aluminium and calcium are removed from molten baths of silicon by adding to the bath gaseous chlorine to form and volatilize the chlorides of aluminium and calcium and to reduce the content of these metals to less than 0.05 per cent by weight in the case af aluminium and less than 0.01 per cent by weight in the case of calcium.  The gas may be introduced through a refractory tube or by bottom blowing, the temperature of the metal being preferably 1500-1700 DEG C.ALSO:Al and Ca, present as impurities in ferro-silicon alloys are removed by adding gaseous chlorine to the molten ferro-silicon to form and volatilize the chlorides of Al and Ca and to reduce the contents of these impurities to less than 0,05 per cent by weight of Al and less than 0,01 per cent by weight of Ca.  In an example of treatment of a ferro-silicon containing 65 per cent by weight of Si, from 28 to 45,8 lbs. of chlorine were employed per ton of metal treated.  The gas may be introduced through a refractory tube or by bottom blowing, the temperature of the metal being preferably 1500 DEG -1700 DEG C.
Patent GB-548653-A (GB)
Title: Improvements relating to bolts and the like
IPC: F16B23/00
Filed: 1941-12-02
Abstract: 548,653. Bolts. SMALLPEICE, C. D.P. Dec. 2, 1941, No. 15501. [Classes 89(i) and 89(ii)] [Also in Group XXIII] Bolts, grub screws &c. have an axial relatively deep recess 11 and relatively narrow lateral recesses 12 extending wholly or in part across the head. The recesses are concave at 13 to facilitate formation by a milling-cutter. When the heads are located in a counter-bored recess they may be locked by a strip 18 of a length somewhat greater than that of the lateral recesses, the ends preferably being sharpened to engage the sides of the counter-bore. A central hole 19 facilitates removal. The bolts are screwed up by a wrench having pegs 14 to fit the recess 11 and one or more wings 15 to fit the recess 12, those on one side fitting the shallow recesses that extend right across the head and those on the other the deeper recesses that extend only part way across. A modified wrench is made from a cranked rod 20 having the formations 14, 15 at one or both ends. The rod may have a section corresponding to the parts 14, 15 throughout. In a further modification a sixarmed tool has the end of each arm formed to suit a different size of bolt. Specification 525,695 is referred to.
Patent GB-599831-A (GB)
Title: Improvements in or relating to rotary electric couplings
IPC: H01R39/64
Filed: 1945-06-19
Abstract: 599,831. Swivelling couplings. LEE, B., and CHEVERTON, F. June 19, 1945, No. 15578. [Class 38 (i)] A rotary electric coupling for at least two line connections comprises a shell-like member closed by an inwardly-directed flange at one end and enclosing a head portion having a hub passing through the flange. The head portion rotates on ball-races, all of which carry line connections through the coupling and at least one of which is located between the head portion and the inwardly-directed flange. Figs. 1 and 2 show a shell 1 fitted with a screw cover 9 and having an inwardly-directed flange 3 surrounding a hub 4 which carries a head 5, of insulating material, rotatable on two concentric ball-races 6, 7 arranged between the head and the flange, which provide electrical connections to contact strips 12, 13 connected to terminals 17, 18 on the terminal platform 8. The ball-races are connected electrically to a pair of contacts in the surface of the hub 4, which may co-operate with interchangeable terminal elements 30 of the kind described in Specification 474,074. Terminal 24 has a tubular extension 26, housing a spring contact plunger 27 bearing upon a contact plate 28 which is connected to a third contact in the surface of the hub. A ball-race may be fitted as shown between the plunger and the contact plate. The third line connection through the centre of the device may be omitted and a spring fitted to press together the head and the flange. In a modification (not shown), for two line connections, one ball-race only separates the head from the flange.
Patent GB-820112-A (GB)
Title: Improvements in or relating to fluid valves
Inventor: ALLMAN ERNEST JAMES
IPC: F16K31/34
Filed: 1955-05-31
Abstract: 820,112. Float-actuated valves. FLOYD [nee RALPH], M. May 11, 1956 [May 31, 1955], No. 15595/55. Class 135. A tank liquid supply valve 6 closing when the float arm 13 reaches a certain high level, has a normally open mains valve 4 which closes the flow to the valve 6 when its operating mechanism is actuated by the float rising above the high level. At the high level a cam 15 allows valve 6 to close but on the float rising above this level, cam 15 actuates a lever 16 closing valve 4. Lever 16 is also operated to close valve 4 by a cam 25 actuated by a manual screw 24 lifting a nut 23 and link 22.
Patent GB-731368-A (GB)
Title: Preparation of anthraquinone compounds
Filed: 1952-06-20
Abstract: Anthraquinone and derivatives thereof are prepared by the Diels-Alder reaction of an open chain conjugated diene with the crude converter product, resulting from vapour-phase oxidation of naphthalene, and containing 1 : 4-naphthoquinone and phthalic anhydride in a ratio between 1 : 1 and 1 : 9, more preferably in a ratio between 1 : 2 and 1 : 4, followed by oxidation of the adduct.  Suitably the crude converter product and the diene are reacted at a temperature between 90 DEG  and 120 DEG  C., the reaction mixture is treated with aqueous caustic alkali and is oxidized by blowing air through the solution. Unreacted naphthalene is removed by stripping with steam.  Specified dienes include alkyl, aryl, chloro, bromo, alkoxy and acetoxy substituted dienes, particularly the 2-substituted butadienes which give rise to the corresponding 2-substituted anthraquinones.  In examples (1) and (2) a crude product obtained by oxidation of naphthalene and containing naphthoquinone, phthalic anhydride and unreacted naphthalene is condensed with butadiene and oxidized to anthraquinone; (3) isoprene is used in place of butadiene in (1) to give 2-methyl anthraquinone and (4) chloroprene is used in place of butadiene in (1) to give 2-chloroanthraquinone. Specifications 731,369 and 731,370, [Group III], are referred to.
Patent GB-462371-A (GB)
Title: Improvements in string musical instruments
IPC: G10H3/18
Filed: 1935-05-29
Abstract: 462,371. Stringed musical instruments. FAURE, A. J. May 29, 1935, No. 15654. Void. Convention date, May 30, 1934. [Class 88 (ii)] Heavy flexible strings are used on instruments with electrical (loud-speaker) amplification, consisting of thick wire 2, e.g. of tungsten, loosely wound on a fine and lightly stretched core 1 of catgut. More than one layer of wire may be used, of differing diameters, the thickest at the exterior. The turns of the wire are arranged closer together at the bowing point, and only one layer is used at the bridge and nut. The instrument, e.g. violin, is tuned to a two-octave or other interval below normal register, thus altering its tone. The vibrations, the direct sonority of which is poor, are transmitted by a pick-up comprising two permanent horseshoe magnets 5 spacedly secured on each face of the bridge, at the non-vibrating point 3 thereof, by a bolt and nut. A soft iron blade 9 secured to the bridge projects between the poles of each magnet (being separated therefrom by rubber discs 10) and into coils 11 set within the pairs of poles. The coils are in series or in parallel.
Patent GB-716671-A (GB)
Title: Improvement in high frequency oscillator systems
IPC: H01J25/38
Filed: 1952-06-23
Abstract: 716,671. Travelling-wave tubes. SPERRY CORPORATION. June 23, 1952 [June 26, 1951], No. 15761/52. Class 39(1) [Also in Group XL(c)] An oscillator (see Group XL(c)) comprises a first travelling wave tube provided with a dispersive helical slow wave structure 9 and a positive feedback path comprising a second travelling wave tube having two slow wave strucures (either or both of which may be dispersive) separated by a drift tube. Adjustment of the velocity of the electron stream of the first tube by varying the helix potential adjusts the frequency of maximum gain and adjustment of the potential of the drift tube varies the phase change in the second tube. The potential of electrode 14 may be varied to vary the gain of the first tube or the tube may be operated in a saturated condition. Slow wave structures operating in a space harmonic mode may alternatively be used.
Patent GB-822229-A (GB)
Title: N-tirisubstituted borazanes and fuel compositions containing them
IPC: C07F5/00
Filed: 1958-05-16
Abstract: Fuel compositions for internal-combustion engines contain a minor proportion of one or more N-trisubstituted borazanes.  (For preparation see Group IV (b).)  An example describes the operation of a carburetter engine with a fuel containing lead tetraethyl, monoethylaniline and N-triethyl borazane as fuel additives.ALSO:N-tri-substituted borazanes are produced by reacting a tertiary amine salt, or a tertiary amine together with an acid or carbon dioxide, with a metal borohydride in aqueous solution in the presence of an inert solvent which is immiscible or only partly miscible with water.  N-dialkyl stearyl borazanes, N-dialkyl cyclohexyl borazanes, N-alkyl pyrrolidine borines and N-tri-n-propyl borazane are novel compounds.  The tertiary amines used may be aliphatic or cycloaliphatic amines or N-alkyl pyrrolidines.  The borohydride may be used as a solid or an aqueous solution.  The process may be effected at 0-30 DEG  C., and the inert solvent may be used in an amount 2-20 times the amount of metal borohydride. Examples describe the preparation of the above novel compounds and also N-trimethyl borazane, N-triethyl borazane and dimethylaminopropyl-dithiocarbamic acid ethyl ester borine.  The products are useful as additives to fuel compositions for internal combustion engines.