baber/WOPTO huggingface dataset:
Patent GB-842708-A (GB)
Title: Improvements relating to marking articles
Inventor: DOLMAN HENRY JAMES
IPC: B41K3/08
Filed: 1956-08-07
Abstract: 842,708. Number-printing apparatus ; inkribbon mechanism. POLYMARK Ltd. June 21, 1957 [Aug. 7, 1956], No. 24146/56. Divided out of 836,417. Classes 100(2) and 100(4) Number-printing apparatus comprises a plurality of printing wheels and mechanically operated means adapted to displace at least some of said wheels serially by the operation of an actuating lever, driving means operable by said lever engaging feed teeth disposed on the same peripheral zone of the wheels as the printing characters. There are five printing wheels 110, Figs. 1 and 3, four rotatable and one fast on a spindle 157, and manually settable by index wheels 158 coupled to the printing wheels by concentric sleeves 153-156 and in one case by the spindle 157, the index wheels having markings to indicate the settings. The two leftmost wheels 110, Fig. 3, are settable only by the wheels 158, and print letters. The wheels 158 have recesses 159 engaging ball detents 161 for correct setting. The three remaining wheels print numerals, and are progressed by the operation of a lever 162 carrying a pawl 169 which is normally clear of the characters and which has a stepped wheel-engaging portion 175, each step for engaging one of the numeral wheels, i.e. units, tens or hundreds. The numeral wheels are provided between the characters with teeth 163 for engagement by the pawl 175, and the units and tens wheels have one deep tooth 164, the units wheel deep tooth bang the deeper. Engagement of the pawl in a deep tooth allows it to engage the teeth of the adjacent wheel of higher order, for motion transfer. Printing takes place by pressing the article to be printed upwards against the wheels 110. Ink-ribbon mechanism. A ribbon 178 is fed between two spools 179, round guide rollers 197 and under a guide plate 198. After each printing operation a plunger 181 is allowed to drop, for example by a roller 135 in the machine for attaching labels to articles to be subjected to laundry operations described in Specification 836,417, whereupon a spring 186 moves to the left, Fig. 1, a slide 183 mounted by slots 185 on fixed pins 184. The slide carries pivoted pawls 187 urged upwardly by springs. One pawl engages a ratchet wheel 188 on the spindle 180 of one of the spools, while the other pawl is held out of engagement with its ratchet by one of two projections 190 on a second similarlymounted slide 189. For ribbon reversal when one spool is empty, a pivoted lever 195 within its spindle drops behind one of the projections 190, and further rotation of the spindle moves the slide 189, so that the projection 190 so engaged allows its pawl to move upwards, while the other projection 190 moves its pawl downwardly.
Patent GB-606681-A (GB)
Title: An improved method for obtaining industrially pure double sodium zirconium sulphates
IPC: C01G25/06
Filed: 1945-09-19
Abstract: Double sodium zirconium sulphates are produced from impure zirconium compounds by preparing a solution containing ZrO2, Na2O and SO3, having at least 0.6 to 2 mols Na2SO4 per mol ZrO2, and having 2.3 to 6 mols SO3 per mol ZrO2 for obtaining Salt B ZrOSO4 0.75 Na2SO4 H2O, and 3 to 10 mols SO3 per mol ZrO2 for obtaining Salt A Zr(SO4)2 Na2SO4 4H2O, and crystallizing by evaporation by heating, preferably to the boiling point, to bring the mother liquor to a total SO3 concentration of 20-45 p.c. by weight, namely 20-33 p.c. for Salt B and 33-45 p.c. for Salt A. Preferably the mol ratio of Na2SO4 to ZrO2 is 1-1.75 while the mol ratio SO3 to ZrO2 is 2.5-4.5 for Salt B and 4-6 for Salt A.  The solution may be produced by fritting zircon with sodium carbonate, adding sulphuric acid, and removing insoluble compounds, e.g. silica by filtration.  Mother liquor from a previous operation may be used to provide sulphuric acid for adjusting the SO3 concentration.
Patent GB-1023155-A (GB)
Title: Improvements in or relating to heat resistant and oxidation-proof bodies containing silicon carbide and molybdenum silicide
Inventor: SCHREWELIUS NILS GUSTAV
IPC: C04B41/85
Filed: 1962-06-25
Abstract: A silicon carbide body containing molybdenum silicide is produced by heating a Mo/Si alloy in the presence of a shaped body of SiC (which may be formed in situ) in a non-oxidizing atmosphere so that the alloy melts and impregnates the SiC.  The body, which should be 15-60% porous, may be formed (a) from hexagonal or cubic SiC with a binder, both preferably up to 0.1 mm. in grain size, or (b) in situ by silicidizing a skeleton of graphite or amorphous carbon and/or carbonizable material (this may be effected during the infiltration process), by treating a Si skeleton with carbonaceous gases, or by sintering a mixture of C and Si.  The Mo/Si alloy used contains 10-70% Si; the product contains 30-99% SiC and has a porosity less than 5%.  In the example, a SiC rod has terminal parts, of the same material but of larger diameter, cemented to it, and is heated at 1950-2200  DEG C., in a furnace, above a graphite trough containing MoSi2 and Si powder (an atmosphere of CO or A may be employed).ALSO:A silicon carbide body containing molybdenum silicide is produced by heating a Mo/Si alloy in the presence of a shaped body of SiC (which may be formed in situ) in a non-oxidizing atmosphere so that the alloy melts and impregnates the SiC.  The body, which should be 15-60% porous, may be formed (a) from hexagonal or cubic SiC, with a binder, and preferably up to 0.1 mm. grain size, or (b) in situ by silicidizing a skeleton of graphite or amorphous carbon and/or carbonizable material (this may be effected during the infiltration process), by treating a Si skeleton with carbonaceous gases, or by sintering a mixture of C and Si.  The Mo/Si alloy used contains 10-70% Si; the product contains 30-99% SiC and has a porosity less than 5%.  In the example, a SiC rod has terminal parts, of the same material but of larger diameter, cemented to it, and is heated at 1950-2200 DEG  C,, in a furnace, above a graphite trough containing MoSi2 and Si powder (an atmosphere of CO or A may be employed).
Patent GB-391014-A (GB)
Title: Improvements in and relating to the wrapping of dried milk
IPC: B65B11/02
Filed: 1932-05-03
Abstract: 391,014. Packeting solid milk. KNOCH, C., 17, Hermannstrasse, Stuttgart, Germany, and SAUNDERS, A. E., 23, Prince of Wales Crescent, London. May 3, 1932, No. 24407. Divided on 383,193, [Group III]. [Class 94 (i).] Dried milk, such as the product obtained from the process described in Specification 383,193, is wrapped to form square-angled packages. A sheet of waxed parchment paper is placed over the top of a matrix, Fig. 1, having walls k, l, m, n and a movable base o, and is pressed thereinto by a ram r and casing q to form folds as shown in Fig. 3. The walls m, n are vertical throughout and the walls k, l are widened at the top, with the result that the sides m<1>, n<1> are plain surfaces, and the ends kl, Z1 are terminated at the top by portions of the four edges of the wrapper. The ram r having been withdrawn, the dried milk is poured in and compressed by the ram to the level of the slots p<1>. Slides p are passed through the slots to make the top folds, the package is removed and a label applied. The paper used is vegetable parchment, coated or impregnated with wax having a melting-point not below 55‹ C.
Patent GB-598851-A (GB)
Title: Improvements in twin-rim disc wheels for vehicles
IPC: B60B11/06
Filed: 1945-09-21
Abstract: 598,851. Making wheels. GOODYEAR, E. F., and GOODYEAR, C. E. Sept. 21,1945, No. 24422. [Class 83 (ii)] [Also in Group XXXIV] A vehicle wheel for twin tyre-carrying runs is formed from a disc a which is stamped to produce a flange a<1> at one side of the disc, and a series of tongues a<2> at the other side, to form seatings for the rims b, b<1> respectively. The flange a<1> may be shaped to constitute the rim at that side of the wheel.
Patent GB-830809-A (GB)
Title: Wood protecting medium
IPC: B27K3/52
Filed: 1957-08-02
Abstract: 830,809. Wood-preserving compositions. ALLGEMEINE HOLZIMPRAGNIERUNG Dr. WOLMAN G.m.b.H. Aug. 2, 1957 [Nov. 1, 1956], No. 24522/57. Class 140. Wood - preserving compositions containing chromic acid or salts thereof as active constituents are made up in the form of adhesive pastes containing not more than 15%, preferably 5-12%, of water and including as adhesives, 0.05-2%, preferably 0.1-1.5%, of watersoluble commercial sizes containing polyacrylic acid or its sodium or ammonium salts, alone or in admixture with related acrylic polymers such as polymethacrylic acid or its sodium or ammonium salts, or with cellulose ethers, or carboxy celluloses, or ammonium or sodium salts thereof. The low water content is stated to obviate oxidation of the adhesive materials. The pastes may be spread directly on wood, and covered with a waterproof coating, may be applied to water-permeable or impermeable sheet material, for example butiminous felt, for preservative wrapping of standing poles &c., for example below the ground line or may be dried in warm air to a water content of 5% or less and made into shaped bodies, such as cylindrical cartridges which may be used to re-form pastes when required or may be inserted directly into bores in poles, sleepers, &c. Additional preservative agents, especially bifluorides, may be added. In an example 32 kg. of potassium bifluoride, 26 kg. of sodium arsenate and 42 kg. of sodium bichromate are ground together and added with agitation to a solution, in 10 kg. of water, of 0.3 kg. of a commercial water-soluble size containing polyacrylic acid and 0.2 kg. of a similar size containing the sodium salt of carboxymethyl cellulose.
Patent GB-518282-A (GB)
Title: Improvements in or relating to the manufacture of boot and shoe protectors
IPC: A43C13/02
Filed: 1938-08-20
Abstract: 518,282. Boot protectors. BLAKEY'S BOOT PROTECTORS, Ltd., and WHITHAM, T. Aug. 20, 1938, No. 24536. [Class 17 (iii)] Protectors or studs 1 comprising metal plates, stud heads or spikes are attached by integrally formed prongs 2 and also by nails or screws passed through holes 3 therein. The holes 3 may be countersunk and located between the prongs 2, and at any desired angle to the plate &c.
Patent GB-630533-A (GB)
Title: Improvements in clutches for conveying or preventing rotary motion
IPC: H02K49/04
Filed: 1947-09-05
Abstract: 630,533. Electromagnetic clutches. ROBERTSON, Ltd., D. R., and SAMPIETRO, A. C. Sept. 5, 1947, No. 24564. [Class 35] [Also in Group XXIV] An electromagnetically engaged jaw tooth clutch has baulking means preventing engagement until its coaxial members are synchronized, comprising interlaced field polepieces of opposite polarity, which, when substantial relative rotation exists, set up eddy currents in the armature thereby developing a demagnetizing flux opposing the magnetizing flux created by the exciting winding, and so reducing the excitation that the members remain disengaged. As synchronism is approached, the eddy currents decrease and the magnetizing flux becomes sufficiently strong to overcome a disengagement biassing means and effects engagement. Applied to a two-speed planetary overdrive gear, Fig. 1, comprising the output shaft 11 of a gear-box 10, a driven member 12 rigid with an annulus gear 15, pinions 14 on a planet carrier 13 fast on the shaft 11, and a hollow shaft 16 having a sun pinion 17 and splines 18, overdrive is effected by locking stationary the shaft 16. A coaxial armature 25, mounted on a sleeve 24 splined to the shaft 16, is biassed to the disengaged position by a helical compression spring 29. The surrounding field comprises a hollow ring 30 containing a winding 33 and having in its bore two rings of interlaced polepieces 31, 32 which set up eddy currents when the armature rotates above a predetermined speed. As ' stand still is approached, the force exerted by the field overcomes that of the spring 29 and the sleeve 24 moves axially to engage a stationary splined ring 23. Direct free-wheel and bi-directional drive effected by a wedging roller 21 and by the engagement of splines 18 and 19 prospectively. The invention is also applied to the conventional back-to-back pair of synchromesh clutches as used in automobile change-speed transmission gearing. In this case slip rings are dispensed with by having a two-part field, a stationary member carrying the coil and a rotating member constituting a polar inductor, the poles being cylindrically disposed. Direct current excitation is used, but low-frequency alternating current may be used in conjunction with a homopolar field.
Patent GB-832050-A (GB)
Title: Automatic control for self-cleaning cartridge filters
IPC: B01D29/00
Filed: 1958-07-30
Abstract: 832,050. Filters. FIAT S. p. A. July 30, 1958 [Dec. 12, 1957], No. 24564/58. Class 46. A ring 5a, rotatably reciprocated by a fluid pressure motor 7, has connected thereto, by pins and slots, arms 12, each loosely mounted on the shaft 4 of one of a number of filter cartridges, each shaft being rotated, during the counterclockwise movement of the ring 5a, by pawl 14 on arm 12 engaging ratchet 15 keyed to shaft 4. The cartridges are thereby cleaned by cleaning devices in the casing.
Patent GB-961019-A (GB)
Title: Improvements in electrical heating devices
IPC: H01L35/00
Filed: 1959-07-17
Abstract: 961,019. Temperature measurement. J. H. WELCH. Sept. 23, 1960 [July 17, 1959], No. 24573/59. Heading G1N An electrical heating element, which may be a thermocouple, which is to be connected alternately to an A.C. supply and to a measuring circuit, is joined to the supply via a half-wave rectifier and to the other circuit via contacts of a relay energised from the supply. In the Figure a thermocouple-heater 1 for a specimen in a microfurnace receives current from an A.C. source 2 in alternate half-cyles via a rectifier 4, the contacts 6, 7 being open. In the other half-cycles the contacts are closed and connect the thermocouple to a galvanometer 3. The rectifier should have a reverse current low enough not to be visible on the galvanometer scale; a diffused-junction silicon rectifier is suitable. The contacts should be closed for less than one half-cycle of the supply, e.g. for 33% of one cycle. Induced currents can be minimised by using screened coaxial cable and screened contacts, or can be detected by using a "dummy" thermocouple with identical materials in both limbs. The device can be for measuring the thermal conductivity of the medium in which it is immersed, or as a temperature- or flow-meter of the exhaust gas of a jet engine or of the coolant in a reactor.
Patent GB-895676-A (GB)
Title: Fluorinated halogenated diketones and their use as chelating agents
IPC: C22B60/04
Filed: 1958-07-31
Abstract: Metal values are extracted from an acidic aqueous solution thereof by contacting the solution with an organic solution of a diketone of the formula RCOCH2COR1 where R is a brominated and/or chlorinated alkyl, cycloaliphatic or aryl radical and R1 is a polyfluorinated alkyl or cycloaliphatic radical having 3-6 fluorine atoms (see Group IV(b)). An example relates to the recovery of gallium from irradiated uranium debris; iron, gold, tantalum and molybdenum are also extracted and these are removed from the organic phase by successive contact with N NaOH and NHCl.  The gallium is then stripped from the organic phase with concentrated HCl, percipitated with ammonium hydroxide, and calcined to oxide.  It is stated that the compounds of the invention can replace known fluorinated diketones in the extraction of metal values; a table gives the extraction coefficients, using the known chelating compound 2-thenoyl trifluoroacetone, of Zr, Hf, Fe, Ce, Nb, Sc, Y, Be, Pb, Co, Nd, Pr, La, Ca, Sr and Ti.ALSO:The invention comprises compounds of the formula RCOCH2COR1, where R is a brominated and/or chlorinated alkyl, cycloaliphatic or aryl radical and R1 is a polyfluorinated alkyl or cycloaliphatic radical having 3-6 fluorine atoms.  These compounds may be prepared by reacting a sodium alkylate with an ester of the acid R1COOH in a solvent, reacting the product with the ketone RCOCH3, and hydrolysing the sodium salt of the enol form of the resulting diketone in the cold with aqueous acids such as hydrochloric, sulphuric, phosphoric or sulphonic acids.  The compounds of the invention are used to extract metal values (see Groups III and XL(a)).
Patent GB-281054-A (GB)
Title: Improvements in or relating to looking glasses or mirrors
IPC: A47G1/02
Filed: 1926-10-06
Abstract: 281,054. Scorer, R. I. Oct. 6, 1926. Cabinets. - A toilet mirror of the kind having an electric lamp hidden behind the mirror, and reflecting means to illumine indirectly the face of the user, comprises a box-like casing a with the mirror b fixed on the upper part of its front face, the lower part a' of this face being open to expose a curved reflector c. The back e may be provided with a hinged door in order that toilet accessories may be stored behind the reflector.
Patent GB-360994-A (GB)
Title: Improvements in or relating to feeding devices
IPC: B29C48/08
Filed: 1930-08-19
Abstract: 360,994. Extruding rubber &c. WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London.-(Bell Telephone Laboratories, Inc. ; 463, West Street, New York, U.S.A.) Aug. 19, 1930, No. 24836. [Class 87 (ii).] An apparatus for feeding materials, such as semiplastic rubber compound, to an extruding device includes a control mechanism responsive to conditions of over-feed to the extruder which mechanism varies the rate of feed thereto in accordance with the feed therefrom. A strip of rubber 27 is fed into an extrusion screw 30 by means of fingers 10 on a reciprocating slide 17. A fixed finger 26 separately carried prevents the rubber 27 from retracting on the return stroke of the slide 17. The slide is adapted to be reciprocated by an arm 47 forming part of the bell-crank lever 35 having a roller 34 which contacts with a cam 32 on the shaft of the extrusion screw, the return stroke being effected by a spring 23. The connection between the sliding feed-member 17 and the arm is through a spring member 44 which is adjustable by a butterfly nut 45. When the feed to the screw is in excess of the take away therefrom, a resistance is experienced by the feed fingers 10 and is absorbed by the feed spring 44 so that the actual feed is diminished proportionately. In a modification the rubber strip 113 is fed by a pulley which has a ratchet drive. On accumulation of excess feed in the inlet 114 of the extrusion screw 110 a pivoted bar 165 is raised and through the lever system 166, 167 the ratchet drive is temporarily made inactive.
Patent GB-339668-A (GB)
Title: Improvements in and connected with beater drum mechanism for shelling maize and for other purposes
IPC: B02B3/04
Filed: 1929-08-15
Abstract: 339,668. Oakes, G. C., and Ransomes, Sims, & Jefferies,; Ltd. Aug. 15, 1929. Thrashing-machines.-The breast of a beater drum is formed by a number of sections 1 pivotally mounted so that they are free to move independently about a rod 2. Each section is controlled by a rod 3 adapted to slide through an opening in a bar 4 and provided on each side of the bar with a spring 5, 6, the spring 5 being the stronger. A ring nut 7 adjusts the compression of the spring 6. Each section has a roughened rubbing surface 9 to tear off the husks and maize from maize cobs. The beater drum has helically arranged beater bars, the inclination of these being desirably from two to two and a half in 'seven. The maize is fed to the beater by a worm 13 having a coarse double pitch thread.
Patent GB-1425048-A (GB)
Title: Elevator driving system
IPC: H02P3/24
Filed: 1973-05-25
Abstract: 1425048 Control of A.C. motors HITACHI Ltd 25 May 1973 25060/73 Heading H2J An elevator CA is driven by a three-phase squirrel-cage induction motor IM having stator windings connectible to an A.C. supply UVW, in delta as in Fig. 1 or double-star as in Fig. 2, by appropriate operation of contactors S1, S2, S3, P1, P2, P3, PX1 and PX2, the arrangement being such that the elevator is driven at high speed by operating the contactors to produce the double-star connection (corresponding to a smaller pole number) and connect intermediate terminals U2, V2, W2 of the windings to the A.C. supply UVW, after which the elevator is braked to a stop at the desired floor by operating the contactors to produce the delta connection (corresponding to a larger pole number) and disconnection of the A.C. supply, further contactors B1, B2 being closed to connect a D.C. braking supply to the windings. An electromagnetic brake MB is finally operated when the elevator is near its desired position. The D.C. supply is provided by a rectifier bridge RE having thyristors SCR1, SCR2 controlled by a conventional position and speed sensing system comprising detecting elements PP in the shaft, a position detector PT on the elevator, a tachogenerator TG sensing motor speed, a comparator CM receiving the latter signal and that from a speed instruction signal generator SP responsive to the relationship of members PP, PT, and a pulse phase shifter PS. Diodes SR1, SR2 provide a closed loop through the motor windings to maintain the braking current during off periods of the thyristors. The D.C. supply can be connected to various pairs of the terminals U1, V1, W1, U2, V2, W2 to produce desired braking torques and operating conditions, the connection to U2, V2 in Fig. 1 producing maximum torque, a connection to U1, V1, Fig. 4B (not shown), also producing maximum torque, a connection to V1, V2, Fig. 4C (not shown), producing a lesser torque with equalized temperature rise of the motor windings and a connection to U1, U2, Fig. 4D (not shown), producing a minimum torque. The torque/speed characteristics for the various braking connections and the double-star connection are discussed, Fig. 5 (not shown). The delta-connected windings may be connected to the A.C. supply UVW through contactors S1, S2, S3 to produce a low speed operation of the elevator CA suitable for maintenance work.
Patent GB-176398-A (GB)
Title: Improvements in or relating to drilling and like machines or appliances
IPC: B23B45/06
Filed: 1920-09-01
Abstract: 176,398. Thomson, E., (trading as Thomson & Co., A.), and Thomson, W. Sept. 1. 1920. Drilling-machines.-The work and tool of a drilling-machine are fed towards each other as the result of reaction induced by a preliminary straining of a resilient frame. The tool chuck 10 is carried by a spindle mounted on ball bearings within a feed-screw 8 which operates in the boss 7 of a C-shaped frame 6. Axial pressure applied to the work 5 through the feed-screw distorts the frame, which resumes its unstrained form as the tool is rotated. The work-holder may be pivotally mounted to preserve alignment. According to the Provisional Specification, the work or tool supports or both may be mounted to slide on the bed under spring resistance.
Patent GB-241215-A (GB)
Title: Improvements in filament supports for vacuum tubes
IPC: H01J1/18
Filed: 1925-10-09
Abstract: 241,215. British Thomson-Houston Co., Ltd., (Assignees of Mullaney, D. A.). Oct. 9, 1924, [Convention date]. Filaments, supports for. - A body 10 of fused quartz has two members 11, 12 of molybdenum or other metal embedded in it; one for anchoring to a support and the other to the filament. The embedded ends of the metal pieces are notched or jagged to improve the mechanical connection. The member 12 may be connected to a hook 14 by means of a spring 13, or the spring may be placed between the hook and the filament. To embed the metal members in the quartz insulators, a number of metal pieces are spaced in an evacuated quartz tube, which is heated at spaced intervals until it collapses upon the metal, as described in Specification 18255/03 for connecting glass and metal.