baber/WOPTO huggingface dataset:
Patent GB-1380493-A (GB)
Title: Electric furnaces and treatment of material therein
IPC: H05B7/144
Filed: 1972-01-25
Abstract: 1380493 Automatic control of the penetration depth of furnace electrodes SIEMENS AG 25 Jan 1972 [25 Jan 1971] 3531/72 Heading G3R The depth of penetration of the electrodes in an electric furnace e.g. an arc or resistance furnace, which has electrical currents induced in its furnace jacket by the magnetic field created by the electrodes, is adjustably determining the depth by measuring the potential difference at a plurality of pairs of points distributed over the furnace jacket and using the measurements to control the depth of the electrodes. As shown a plurality of pairs of points a, a' ... d, d' are joined to the contacts of a switch 9 by leads 7, the switch 9 sampling the potential difference of the pairs of points a, a' ... d, d' sequentially and connecting the selected pair to a measuring device 10 e.g. an electronic computer. The measuring device 10 supplies a control signal to a device which adjusts the depth of penetration of the electrode so that potential differences measured remain at desired values and the reaction centre of the furnace at a desired level.
Patent GB-144750-A (GB)
Title: Improvements in or relating to adding or like machines
IPC: G06C7/06
Filed: 1919-02-13
Abstract: 144,750. Wade, H., (Burroughs Adding Machine Co.). Feb. 13, 1919. Adding - apparatus; overthrow - preventing mechanism; key-interlocks. -Relates to key-set key-operated multiple-bank machines of the kind described in Specification 4131/15, wherein the keys differentially depress long pivoted levers connected to toothed actuating- segments, there being one such set for each denomination, and consists in providing for each bank swinging stop-plates co-operating with the key-stems to prevent the depression of more than one key at a time, and also with means for positively arresting the actuator at the end of the throw proportional to the key depressed. The swinging stop-plates 2, Fig. 2, are hung upon cross-rods 3, and anutually abut with sufficient play to admit of one key-stem passing down between or at the end of the series, thereby locking all other keys of the same bank against depression. Each plate is of yoke formation, and the rearward swinging of a leg 2<a>, Fig. 4, upon the stop-plate immediately to the rear of the depressed key brings it into position to act as a stop for a corresponding lug 4<a> upon a pivoted and upwardly impelled lever 4, whereby a set of stepped shoulders 4<b> thereon are adjusted to arrest a lug d upon the link D connected to the actuating-segment E and adapted for differential movement by the keys. Alternatively, the swinging stop-plate 20, Fig. 7, immediately in rear of the depressed key, brings a lug 22 upon a forwardly projecting arm 21 into co-operation with the proper lug d<2> upon the differentiallymoved link D<1>, which has a yielding connexion E<1>, E<2> with the actuating-segment E to prevent injury due to locking.
Patent GB-326942-A (GB)
Title: Air screw hubs
IPC: B64C11/30
Filed: 1929-02-04
Abstract: 326,942. Armstrong Whitworth Aircraft, Ltd., Sir W. G., and Wylie, H. N. Feb. 4, 1929. Screw propellers.-In screw propellers wherein the blade has a universal joint connection with the boss, the hub has a pair of projections provided with bearings or trunnionlike members on a yoke to which a blade is pivoted about an axis transverse to that of the trunnion-like member. The yoke may be tiltable and the hooks may be interconnected for simultaneous variation of the pitch of the blades. The hub 2, Fig. 1, has radial pins 4 on which are mounted tangential plates 5 in contact with flats 3 on the hub, their ends 50 having eyes 6 carrying a bearing 15 for cross yokes 7. These yokes have spherical ends 14 for mounting in the bearings and a central transverse bearing in which the end 10 of the blade 11 is pivotally mounted. The pitch of the blades may be simultaneously varied by moving a plate 5 on its axis and can be locked by bolts which pass through curved slots 13 in the plate and are screwed into the flat 3. For adjusting the pitch of one blade, the bearings 15 are eccentrically mounted. Instead of being tangential, the plates may be transverse and one may be formed as an integral flange on the boss and when employed with three blades the flange is triangular, the other plate being adjustable by rotation on the boss. Simultaneous adjustment of the eccentric bushes radially provides a means for balancing the propeller. A resilient member for the purpose of providing a slight resistance to the free pivoting of the blade may be placed between the hub and the yoke or the root of the blade.
Patent GB-974243-A (GB)
Title: Improvements in fuel tank locking devices
Inventor: MARDEN HAROLD ALEXANDER
IPC: B60K15/04
Filed: 1961-02-01
Abstract: 974,243. Locking devices. STREBOR DIECASTING CO. Ltd. April 26, 1962 [Feb. 1, 1961], No. 3835/61. Heading E2A. A locking device for an inlet pipe 1 of a fuel tank provided with a removable filler cap 2, comprises a locking pin 14 adapted to be located in locking relationship with the cap, rotatable means 5 actuated by a key 7 to enable the pin to be released from locking relationship with the cap, and means for trapping the key 7 in the unlocked position and for releasing the key 7 in the locking position such that removal or replacement of the filler cap is possible only when the key is trapped. As shewn in Figs. 2, 3, a cam 8 having a cut-away portion 9 is secured to the back of the lock plug 5, and is positioned adjacent a recess 11, supporting a steel ball 10, of a U-shaped plunger 12. The other limb of the plunger forms the locking pin 14 and is located, in the locking position, in a recess in an arm 2a of the cap 2. On rotation of the key 7 portion 9 of the cam plate 8 lies adjacent the recess 11, so that on raising the plunger 12 to release arm 2a of the cap 2, the ball 10 falls into portion 9 thus preventing further rotation of cam plate 8 and removal of the key 7. In a second embodiment, see Fig. 6, the locking pin 14<SP>1</SP> is formed with a groove which retains a projection 23 of a crankpin 8<SP>1</SP> secured to the lock plug 5<SP>1</SP>, so that in the locked position the pin 14<SP>1</SP> is extended as in Fig. 6, but on rotation of the key 7<SP>1</SP> to the unlocked position the pin 14<SP>1</SP> is withdrawn into the recess 20. In this embodiment a hinged cover plate 24 may be provided.
Patent GB-970488-A (GB)
Title: Novel steroid compounds and their preparation
IPC: C07J5/00
Filed: 1961-08-29
Abstract: The invention comprises the 3-ketals of 21-acetoxy-16a -methyl-pregnane-3, 11, 20-trione compounds having the general formula: <FORM:0970488/C1/1> in which X represents a cyclic ketal residue and in which Y represents either a double bond between the 5, 6-positions or an epoxide linkage between the 5a , 6a -positions and processes for the preparation thereof wherein 21-acetoxy-16a -methyl-pregn-4-ene-3, 11, 20-trione is reacted with a glycol in the presence of an acid to form the 3-ketal thereof which is subsequently treated with an epoxidizing agent to form the corresponding 5a , 6a -epoxy compound.  As glycol there may be used ethylene glycol and as epoxidizing agent perphthalic acid may be employed.  Specification 970,483 also is referred to.
Patent GB-137156-A (GB)
Title: Improvements in combustible mixture atomising or mixing valves of internal combustion engines
IPC: F01L3/06
Filed: 1919-02-19
Abstract: 137,156. Chadwick, J. S., and Downie, T. Feb. 19, 1919. Valves. -To ensure complete atomizing and mixing of the charge, the admission valve 1 to the working cylinder is formed with a tapered or cylindrical lip 4, Figs. 1 and 3 respectively, having one or two series of small orifices 6 through which a part or the whole of the charge passes on its way to the cylinder. The holes are preferably from 1/16 to 1/8 inch in diameter, and the lip 3/8 to 3/4 inch in depth. In the construction shown in Fig. 3, the cylindrical lip is practically a sliding fit in the valve casing, and a recess 7 is formed beneath the head of the valve, which forms the closure member; the lip may, however, be tapered. The holes 6 may be radial, or inclined so as to cause converging, diverging, or intermixing streams. The total area of the holes 6, Fig. 3, is equal to that of the choke-tube or induction passage.
Patent GB-1172963-A (GB)
Title: Improvements in Multi-Spindle Automatic Machines
Inventor: CLANCEY GEORGE
IPC: B23B31/20
Filed: 1968-01-26
Abstract: 1,172,963. Chucks. G. CLANCEY. 26 Jan., 1968, No. 4201/68. Heading B3B. An adjustable collet chuck for an automatic multi-spindle lathe comprises a collet 10 which is adjustable over a limited range within a chuck body 8 by means of a ring 30 that is threadably engaged with a plate 15. When adjusted to the required size the collet is operated by a spool 24 movable within a work spindle 5 and connected to a sleeve 19 to which .the plate 15 is attached. Springs 25 release the chuck. The ring 30 is locked relative to the plate 15 by a locking screw. The chuck may be mounted to an adaptor spindle nose (37), (Fig. 4, not shown), which is then mounted on the work spindle 5. The collet may comprise blades set in a resilient, e.g. rubber, body; or separate blades movable in radial slots in a steel body.
Patent GB-820855-A (GB)
Title: Ferromagnetic ceramic materials with rectangular hysteresis cycle
IPC: C04B35/26
Filed: 1957-02-08
Abstract: 820,855. Magnetic compositions. STANDARD TELEPHONES & CABLES Ltd. Feb. 8, 1957 [Feb. 14, 1956], No. 4397/57. Drawings to Specification. Class 38 (2). A ferromagnetic ferrite having a rectangular hysteresis loop is made by mixing together 23- 52 mol. per cent of ferric oxide up to 25% of which may be replaced by aluminium and/or chromium oxides, 33-77 mol. per cent of manganese oxide or manganese and magnesium oxides, 0-15 mol. per cent of zinc and/or chromic oxides, and 0.02-0.5% by weight of boron in the form of sodium borate or boric acid, compressing the mixture, heating it at 1150-1350‹ C. in nitrogen containing up to 2% by volume of oxygen, and cooling in pure nitrogen. Curves are given showing how the coercive force, magnetic induction, and coefficient of rectangularity vary with change of boron content from 0.02 to 0.20%, for manganese ferrite comprising MnO and Fe 2 O 3  in equal molecular proportions, to which sodium borate has been added. The ferrite is made by grinding the starting mixture (which may include MnO or Mn 3 O 4 ) in water in a ball mill, and heating at 1230‹ C. for 4 hours in nitrogen containing 1% by volume of oxygen, and cooling in pure nitrogen. Hysteresis curves and other information of their magnetic properties are given for the material containing no and 0.04% by weight of boron. A material incorporating oxides in the following molecular percentages: Fe 2 O 3 , 46.8%; MnO, 32.8%; ZnO, 6.9%; MgO, 13.5% was produced by a similar process except that the sintering temperature was 1275‹ C. Characteristics are quoted of the material with no boron and with additions of sodium borate and boric acid. Specification 820,853 is referred to.
Patent GB-850440-A (GB)
Title: A fluidised layer process for the production of anhydrous aluminium chloride
Inventor: HILLE JOSEPH
IPC: C01F7/58
Filed: 1959-02-09
Abstract: Anhydrous aluminium chloride is produced by reacting gamma alumina with chlorine and carbon monoxide and/or with phosgene in the presence of an alkali-metal aluminium chloride melt, in a fluidised bed.  The process is characterized in that the grain size distribution of the gamma alumina is such that the maximum percentages increse in volume from the state where no gas passes through the alumina to the point where the layer exhibits signs of "boiling" is between 40% and 55%, preferably between 45% and 50%. The major part by weight of the gamma alumina has a grain size of less than 60 microns.  The gamma alumina may be a mixture of ground and unground particles.  Specification 668,620 is referred to.
Patent GB-1094511-A (GB)
Title: Improvements in and relating to rectifier circuits
IPC: H02M1/088
Filed: 1965-02-02
Abstract: 1,094,511. Control circuit for a rectifier. LE MATERIEL ELECTRIQUE S.W. Feb. 2, 1965 [Feb. 3, 1964], No. 4507/65. Heading H3T. [Also in Division H2] A controlled rectifier conduction control arrangement comprises a source of conduction control signals CA connected to at least one bidirectional gate fed by the secondary winding 7 of a first transformer and to supply an output to the primary winding 6 of a second transformer having a secondary winding 5 connected by means of rectifiers D26, D27 to operate a gate T, T2 in the control input circuit of a controlled rectifier, the primary winding of the first transformer receiving the output of an oscillator 2 which oscillator also feeds the gate T1, T2, through the secondary winding 4 of the first transformer. Rectifying diodes D1, D2, D3, D4 pass the positive rectified signal of the rectangular waveform from the oscillator to transistor T1 and the negative rectified signal to T2. Normally Tr1 in the bi-directional switch is non-conducting and T2 is conducting making the controlled rectifier R non-conducting. When a pulse appears from source CA, Tr1 conducts allowing signals to pass through the second transformer, to be rectified and applied to the gate T1, T2 causing T1 to conduct and T2 to cease conducting, the signal passing through T1 causing the rectifier R to conduct.
Patent GB-196743-A (GB)
Title: Improvements relating to door and other like mats
IPC: A47G27/02
Filed: 1922-02-16
Abstract: 196,743. Tomlinson, W., and Rigby, F. Feb. 16, 1922. Floor mats.-A mat is constructed from leather links A threaded on metal rods B and secured by internally-threaded nipples C screwed on the rods at one or both ends.
Patent GB-416262-A (GB)
Title: Measuring jacket for tailors
IPC: A41H1/10
Filed: 1934-02-12
Abstract: 416,262. Measuring for wearing- apparel. ANGELO, C. DE, 53, Rue du Chateau, St.-Leu-La-ForÛt, Seine-et-Oise, France. Feb. 12, 1934, No. 4644. Convention date, Feb. 13, 1933. [Class 141.] A tailor's measuring jacket, for application to the person comprises a jacket with seams 1, 2 comprising elastic threads or tapes allowing both transverse and longitudinal relative displacement of the sections making up the garments. The elastic threads may be of indiarubber. When the jacket is donned the tailor measures the opening of the seams and transfers the corrections thus shown to another pattern coat or jacket which is ultimately to form the coat of the customer. Specification 359,493 is referred to.
Patent GB-266378-A (GB)
Title: Improvements in the manufacture and production of urea
IPC: C05C9/00
Filed: 1927-02-19
Abstract: 266,378. I. G. Farbenindustrie Akt.- Ges. Feb. 19, 1926, [Convention date]. Urea in the form of needle-shaped crystals is obtained from a solution of moderate concentration, i.e. of 50 to 90 per cent, by breaking it up into drops and exposing the drops to slow cooling in a current of air or other gas. The slow cooling may be effected by the partial use of preheated air or by a suitable application of the counter-current principle. In an example, a solution of 70 per cent strength is broken up into drops by suitable means such as sprayers, nozzles, or rotary discs and admitted to the top of a tower 20 metres high through which flows an upward current of air or gas, the current being so regulated that the drops are not completely cooled until they reach the lowest zone. If necessary, warm air may be admitted into the upper end of the tower and cold air only at the lower end. To increase the time of falling the air may be admitted tangentially. Alternatively a low chamber may be employed, the solution being admitted horizontally or at an upward angle so as to obtain the longest trajectory. In this case the air supply may be by natural draught regulated by louvres or shutters at the side or below, and the breaking up of the solution may be effected by compressed air or steam or by causing a current of air or the like from below to impinge upon the entering solution. The product collects at the bottom of the tower or chamber in the form of a crystal pulp which may be treated in a filter, centrifuge, or the like, or as a damp mass of crystals which may be directly dried. Specification 245,687 is referred to.
Patent GB-556622-A (GB)
Title: Method of preparing resinous condensation products and products obtained thereby
IPC: C08G14/06
Filed: 1942-04-10
Abstract: 556,622. Purifying liquids. RESINOUS PRODUCTS & CHEMICAL CO. April 10, 1942, Nos. 4765, 4766 and 4767. Convention dates, April 9, 1941. [Class 46] [Also in Groups IV and III] Insoluble resinous condensation products suitable for ion exchange and the absorption of acidic constituents from fluids are made by heating in aqueous solution a methylol-forming phenol, an alkylene polyamine and formaldehyde in amount at least equivalent to both amine and phenol to form a gel, and heating the gel to a temperature above 70‹ C but below the scorching temperature of the resin. Phenols specified are phenol, cresols, naphthols, phenyl-, benzyl-, cyclohexyl-, tert-, butyl-, amyl- and octyl-phenols, resorcinol, hydroquinone, catecho guaiacol, di- (hydroxyphenyl)- methyl ordimethyl methanes, di- (hydrocyphenyl)- methylethyl-ormethyl-phenyl methanes, di- (hydroxymethyphenyl)- dimethyl methane, di- (hydroxyphenyl)- cyclohexane and 2, 2, 5, 5,- tetra (hydroxyphenyl) hexane; quebracho tannin, compounds of the formula HO-Ar- X-Ar-OH, where Ar is an aryl nucleus and X is-SSO-or-SO<SP>2</SP>, e.g. di-(hydroxyphenyl)-sulphide-sulphoxide or-sulphone and 4, 4<SP>1</SP>- dihydroxyditolyl-sulphide or -sulphone. The phenol may be substituted as long as an o- or phydrogen is still available. Amines specified are ethylene diamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, N, N'- bis-(aminopropyl)- ethylene diamine, propylene diamine, dipropylene diamine, and tris-(trimethylene)-tetramine. The resins may be prepared in the presence of carriers or fillers e.g. silica, alumina, starch and wood-flour, or may be mixed therewith. In a typical example, phenol is added to aqueous formaldehyde held at 29‹ C. by cooling and the mixture is slowly added to triethylene tetramine. The resulting gel was maintained at 95‹ C. for. an hour and then heated for 24 hours at 130‹ C. The resins are stated to be particularly effective for anion exchange, but also possess some capacity for absorption of cations. They may be regenerated after use in the usual way.
Patent GB-1025211-A (GB)
Title: Improvements in or relating to fluid beds and to the treating of articles thereby
Inventor: ELDER STUART LEONARD
IPC: B29C35/02
Filed: 1962-02-08
Abstract: An apparatus for vulcanizing rubber tubes comprises a fluidized bed containing at least one non-rotatable porous element having at least one cavity and at least one opening in the element for the supply of fluidizing vapour to the cavity, the said element or elements being disposed within the vessel in a position to enable gas passing through the walls of the element to fluidize the bed.
Patent GB-1154448-A (GB)
Title: Improvements in Wet Twisting Processes for Textile Yarns and Threads
IPC: D01H13/30
Filed: 1968-01-30
Abstract: 1,154,448. Smoothing yarn. HAMEL PROJEKTIERUNGS-UND VERWALTUNGS, A.G. 30 Jan., 1968 [16 Feb., 1967], No. 4827/68. Heading D1P. A yarn is smoothed by moistening the yarn and then withdrawing the moistened yarn from a bobbin rotating inside a container such that the yarn balloon contacts the inner surface of the container and forms a liquid film thereon. The yarn may be. moistened by one or more passages through a bath of water, a finishing preparation, an oil, or a wax. The bobbin may be mounted on a cap spinning frame with the container rotating with the bobbin, or on a rotating spindle with the container stationary.
Patent GB-1291929-A (GB)
Title: Improvements relating to fluid flow valves
Inventor: PRIESE WERNER KLAUS
IPC: F16K5/06
Filed: 1970-02-02
Abstract: 1291929 Valves HILLS-McCANNA CO 2 Feb 1970 4904/70 Heading F2V Sealing of a ball-valve closure member 20 with respect to its housing 110, is effected by means of two annular sealing and seating rings 56, of yieldable polymeric material, each of which surrounds one of the flow passages 16 formed in the housing 110. Each such sealing ring is formed with a concave ball-contacting projection 62 and an annular recess 120, and is provided with a first spring 114 which engages the body 110 and urges the ring axially in the direction of arrows 130, and a second spring 116 which is contained in the recess 120 and tends to urge the ring radially inwardly in the direction of arrows 124, the resultant of the spring forces acting generally in the direction of arrows 134. Excessive axial displacement of the ring is prevented by the provision of an L-shaped cage 9 and a circlip 106. The ring surrounding the flow passage 16 on the upstream side of the valve may be additionally provided with a plurality of grooves 136 which enable upstream pressure to penetrate behind each ring and so enhance its following of the ball when pressure moves the latter towards the downstream seating ring. The ring and housing are so shaped that excessive pressure in the region between the rings may, by acting on the ring surface 138, detach the respective ring from the closure member and so discharge to one of the flow passages (Fig. 3, not shown). Also, in the event of the ring being destroyed by excessive heat, adequate sealing is provided by engagement between the ball and a projecting portion 112 of the housing 110 (Fig. 4, not shown).
Patent GB-221428-A (GB)
Title: Improvements in heaters, including heat radiators, for automobiles and the like
IPC: B60H1/20
Filed: 1924-02-26
Abstract: 221,428. Richardson, J., and Henderson, A. L. Feb. 26, 1924. Heating vehicle.-Relates to a system in which the engine exhaust is utilized to heat water which is circulated through a heating radiator. The two-part radiator 24a, 24<b>, Fig. 2, may be arranged as a footwarmer for the occupants of the rear seats, and the supply tank 23 may be placed above it. The heater for the circulating water, shown also in plan in Fig. 4, is divided into two flues 2, 3 separated by a fixed partition 15 and by two doors 8, 9 pivoted at 10 and operated simultaneously so as to direct the exhaust through either of the flues. The partition and doors may be lined with heat insulating material. The boiler 17 arranged in the flue 2 is constructed from two cones and an annular end plate 17b to which are connected the inflow and outflow pipes 18, 19. The exhaust passes through and around the boiler. The water circulates through the pipe 19 to the upper part 24<b> of the radiator, thence downwards through the connection 29 to the lower part 24a from which it returns through the pipe 18 to the boiler. The supply tank 23 is connected to the radiator by a pipe 18<a>, and a relief pipe 30 is led thereto from the boiler connection 18. Overflow pipes 26 and 27 are provided, and the pipes 27 and 30 are provided with holes 27<a>, 30<a> to prevent syphoning.
Patent GB-490682-A (GB)
Title: Improvements relating to the manufacture of alternating electric current rectifiers
IPC: H01L21/16
Filed: 1937-02-18
Abstract: In the construction of elements for dry surface rectifiers having metal blanks upon which the rectifying compound is formed under heat, the exposure, before arriving at the operative temperature, for example, that of oxidizing, is reduced or prevented as by coating with carbon, cupric oxide, graphite, or oil, &c., which coating will, when black, increase the heat absorption rate or will protect the surface until near oxidizing temperature when it will be burnt off.