baber/WOPTO huggingface dataset:
Patent GB-866039-A (GB)
Title: Improvements in or relating to the recovery of germanium
Inventor: BRADSHAW STANLEY EDWIN
IPC: C22B41/00
Filed: 1958-09-29
Abstract: Germanium tetrachloride is obtained from material containing finely divided germanium by reacting the material with an aqueous solution containing an alkali metal hypochlorite and an alkali metal hydroxide, filtering the solution and adding to it hydrochloric, nitric or sulphuric acid to bring the pH to below 7, then adding excess of ammonia to form a precipitate, and distilling germanium tetrachloride from a mixture of the precipitate and hydrochloric acid.  In an example sludge from a machine used for sawing and lapping germanium is freed from as much oil and water as possible, boiled in a solution of sodium hypochlorite and sodium hydroxide, hydrochloric acid is added, followed by ammonia, the precipitate is removed and heated with hydrochloric acid and germanium tetrachloride distilled off and recovered.  The germanium tetrachloride may be hydrolysed with water to germanium dioxide, and the germanium dioxide may be reduced to germanium by heating in hydrogen.
Patent GB-826684-A (GB)
Title: Land levelling device
IPC: E02F3/76
Filed: 1956-10-11
Abstract: 826,684. Earth-moving apparatus. EVERSMAN MFG. CO. Oct. 11, 1956 [Feb.13, 1956], No. 31046/56 Class 68(1) A land leveller of the type having a long articulated chassis 10, 11, 12 has mounted on the middle section a dependant frame 32, 33, 34 carrying a scraper blade 41 and gauge wheels 40 which follow the contour of the ground and control through a lever system 38, 36, 59, 58, 57, 65 the setting of the blade 41 according to ground level variations. Means are also provided that on articulation of the sections 11, 12 of the chassis press the gauge wheels 40 against the ground to an amount in proportion to the angle between the sections to cause upward movement of the blade to counterbalance downward movement due to the articulation of the sections. The means comprise an arm 73 mounted for rotation about and in a plane at right angles to the axis 24 of articulation of the sections 11, 12, a clamp 75 receiving the upturned end of the arm 73, a spring 71, and a chain 68 that passes over an arm 70 pivotally mounted at 70 on a frame member 34 to be connected at 69 to an arm 67 rigid with the shaft 36 on which the wheels 40 are mounted by arms 38 secured to the shaft.
Patent GB-1224418-A (GB)
Title: A process for manufacturing a naphthalic acid derivative
IPC: C07C51/16
Filed: 1969-06-19
Abstract: 1,224,418. Naphthalic acid derivatives. MITSUBUSHI CHEMICAL INDUSTRIES Ltd. 19 June, 1969 [19 June, 1968; 7 Oct., 1968], No. 31159/69. Heading C2C. Compounds of formula wherein each of X and Y is a halogen atom or a nitro group, and m + n is 0 or 1, and anhydrides thereof, are prepared by oxidation with chromic acid in sulphuric acid of a compound of formula followed if desired by heating to form the anhydride. The chromic acid may be prepared in situ by reaction of sulphuric acid with a sodium, potassium or ammonium bichromate or chromate or chromic anhydride. The oxidized product is preferably subjected to further treatment with an alkaline-activatable oxidizing agent, for example sodium or potassium hypochlorite, in aqueous alkaline solution.
Patent GB-652589-A (GB)
Title: Improvements relating to commutators
Inventor: COLLINS HERBERT HENRY
IPC: H01R43/08
Filed: 1948-12-03
Abstract: 652,589. Commutators for dynamo-electric machines. LUCAS, Ltd., J. Dec. 3, 1948, No. 31328. [Class 35] A commutator is made by pressing out anchoring tabs d from a plate a, folding the plate along its centre, bending the folded plate into a cylinder, and securing in moulded plastic. The plate is formed with notches b along one edge and complementary teeth c along the other so that when the plate is folded the teeth can be folded over into the notches. Before bending into a cylinder, the tabs are bent up at right angles, and after moulding, the segments are separated by slitting.
Patent GB-864166-A (GB)
Title: Improvements in or relating to the preparation of chlorinated wax
Inventor: STRETTON THOMAS EDWARD
IPC: C10G73/38
Filed: 1959-08-21
Abstract: The invention comprises a stable chlorinated wax having a chlorine content of 56-60% and a melting point of 40-44 DEG C., and a process for the preparation of a chlorinated wax comprising chlorinating a mixture containing 55-80% by weight of a soft paraffin wax and 20-45% by weight of a normally liquid paraffinic hydrocarbon oil until the resulting chlorinated wax contains 56-60% chlorine.  Actinic light may be used in the chlorination, and the mixture may also contain a hydrocarbon solvent, e.g. of b.p. 176-260 DEG C. and average molecular weight 160-190.  Preferably the soft wax and the hydrocarbon oil have molecular weights of 280-400.  The chlorination may be carried out under pressure, and the product wax may be blown with an inert gas to remove residual chlorine, and may be stabilised by incorporating conventional stabilisers.  The Specification disclaims the process claimed in the original Specification 864,165.
Patent GB-922882-A (GB)
Title: Improvements in photographic transparencies
IPC: G03C7/30
Filed: 1959-09-15
Abstract: 922,882. Treating photographic transparencies. KODAK Ltd. Sept. 15, 1959 [Sept. 15, 1958], No. 31502/59. Class 98 (2). Photographic transparencies are treated with a 5-15% by weight aqueous solution of 2,3-dihydroxy - 1,4 - dioxane to prevent them from " popping " during projection. The aqueous solution also may contain a polymethylene glycol of at least 6 carbon atoms such as hexamethylene - 1,6 - diol or 3 - methylpentane- 1,5-diol.
Patent GB-1455766-A (GB)
Title: Pheno aldehydes
IPC: C08L7/00
Filed: 1974-07-17
Abstract: 1455766 Stabilizers for polymers CIBAGEIGY AG 17 July 1974 [20 July 1973 30 April 1974] 31638/74 Heading C3P [Also in Division C2] Organic substrates, e.g. polymers especially polypropylene which are sensitive to oxidation are stabilized by incorporation therein of at least one compound of Formula I in which R 1  and R 5  independently denote hydrogen or methyl; R 2  and R 4  independently denote alkyl, cycloalkyl or aralkyl and R 4  may additionally denote hydrogen or in which R 1  and R 2  together and/or R 4  and R 5  together represent tetramethylene; R 3  denotes OH; R 6  denotes alkyl, aralkyl, acyloxyalkyl, oxaalkyl or phenyl; R 7  denotes alkyl, phenyl or a group of Formula A in which R 1  to R 5  are as defined above; or R 6  and R 7  together represent an alkylene group and n denotes 0 or 1. The compositions may also include other known additives of which many are listed.
Patent GB-520855-A (GB)
Title: Improvements in spring forks for cycles or motor cycles
IPC: B62K25/08
Filed: 1938-11-02
Abstract: 520,855. Spring forks. EXCELSIOR MOTOR CO., Ltd., and WALKER, R. E. Nov. 2, 1938, No. 31677. [Class 136 (iii)] In spring forks for motor or other cycles, of the type in which the fork blades slide in the ends of the fork crown under spring control, the springs are arranged wholly above the fork crown and are independent of the steering- column carried by the crown, which has downwardly extending tubular guides for the fork blades. As applied to a front fork, the steering-stem 5 is provided at its lower end with a transverse bracket or fork crown 6, which is provided with guide tubes 7 to receive slidably the fork sides 8, the upper ends of which are united by a bridge-piece 13 secured by nuts 14 on studs 11, dust covers 15 being interposed -between the bridge-piece 13 and the guide tubes 7. The crown 6 is formed with a forwardly-extending lug 17 in which is fixed a rod 18 forming a guide for the centre of the bridge-piece 13, which is of forwardly-bowed or V formation in plan. The sliding movement of the fork is controlled by a main compression spring 22 in a telescopic cover 24, 25, and by a recoil spring 29 or rubber buffer.
Patent GB-451556-A (GB)
Title: Improved method of and means for manufacturing fastening members for sliding-clasp fasteners
IPC: A01B33/08
Filed: 1935-11-16
Abstract: 451,556. Making fasteners. KOPPEL, L. B., 94, Greencroft Gardens, Hampstead, and REITER, B., 17A, Redbourne Avenue, Finchley, both in London. Nov. 16, 1935, No. 31806. Convention date, Nov. 17, 1934. [Classes 83 (ii) and 83 (iv)] [See also Group XXV] Die-rolling; shearing.-Interlocking members for sliding-clasp fasteners are made by feeding a strip of metal to tools, forming the interlocking devices on the strip, and pressing sideways and thus compressing the material of the strip to form the prongs without substantial waste of metal. A strip is fed between a tool e, Fig. 5, and a matrix el to form the aperture d between the prongs without waste of material, and projections and depressions z are formed by tools f, g, f<1>, g<1>. Elements are severed on the lines b by tools h, h<1> and i, i<1>. A number of strips of elements 1 ... 6, Fig. 4, are formed in a sheet of metal, the apertures d being formed by pressing sideways the material thus thickening the metal or increasing its density without waste of material. The tools may be carried on a series of rolls, the strip being notched by tools l, l<1> and l1, l<1>1, Fig. 8, and then spread sideways by tools o, Fig. 9, on rolls m, m<1> embossed by tools on rolls n2, n<1>2, Fig. 11, and finally sheared. Sets of tools may be carried on a single pair of rolls r, r<1>, co-operating with a backing-up roll r<11>, the elements being formed in the strip in a single passage, and finally sheared by cutting edges on a rotary tool q. When the elements are formed with the prongs in the closed position, cam surfaces on the tool q spread the prongs. A series of strips severed from a sheet are relatively displaced in level in order to permit the spreading of the prongs, or alternate strips are fed in opposite directions, two sets of tools being provided. Elements 1.. 6, Fig. 3, may be arranged transversely in a strip a, alternate elements pointing in opposite directions. Specification 400,027 is referred to. According to the Specification as open to inspection under Sect. 91, elements may be formed in one or several rows in strip or sheet material with alternate elements facing in opposite directions and with adjacent rows interengaging to avoid waste of material, but the material between the prongs is punched out. Elements E, E1, Fig. 19 (Cancelled), formed in a strip a, with alternate elements oppositely disposed, are applied to two tapes D, D1 simultaneously and are secured thereon by tools B, C, B1, C1, the members passing immediately to be closed by a slider to form a complete fastener. This subject-matter does not appear in the Specification as accepted.
Patent GB-396813-A (GB)
Title: Improvements relating to automatic temperature alarms
IPC: G08B17/06
Filed: 1931-11-17
Abstract: 396,813. Electric bells. SKERRETT, H. N., 24, Temple Row, Birmingham.- (Fire Detector Co., Inc. ; 405, Lexington Avenue, Manhattan, New York, U.S.A.) Nov. 17, 1931, No. 31820. [Class 13.] A temperature alarm comprises a casing 7 supported by a bracket 8 and carrying a gong 12. A solenoid 13 mounted in the casing has a core with a tubular extension 15, within which a plunger 17 is slidable in a direction to strike the gong.. Normally, the plunger bridges spring contacts 22 in the solenoid 'circuit, Fig. 3. A bowed bimetallic element 18 mounted behind the extension 15 carries contacts 19 which are arranged in the solenoid circuit and normally are spaced. When a rise of temperature closes the solenoid circuit at 19, the plunger 17 is projected against the gong, breaking the circuit at 22. In a modification, a flat bimetallic element is used, and the core extension is omitted.
Patent GB-446832-A (GB)
Title: Improvements in and relating to hand-operated devices for electric switches particularly rotary switches for electric cookers
IPC: H01H19/14
Filed: 1934-11-06
Abstract: 446,832. Hand-actuating devices for switches. DIAMOND H SWITCHES, Ltd., Gunnersbury Avenue, Chiswick, and TURNER, C. A., 33, Crespigny Road, Hendon, both in London. Nov. 6, 1934, No. 31904. [Class 38 (v)] A rotary switch 1 is operated by means of a turn knob 15 through an intermediate connecting device of adjustable length. The invention is specially applicable to operating switches situated at the back of ovens by means of knobs situated at the front. The intermediate device comprises two telescoping members 4, 9 pressed apart by a spring 14, the member 4 carrying a socket 3 which slips over the actuating member 2 and drives it, and the member 9 carrying a plug 11 which is engaged in a similar manner by a socket in the knob 15. The member 9 also has fixed to it a member 10 adapted to seat itself against the panel 16. In a modification, allowing greater adaptability, the rod 4 may be adjusted angularly with respect to the member 9 and a stop on the rod 4 limiting the outward movement of the member 9 is adjustable. Specification 179,513, [Class 38 (v)], is referred to.
Patent GB-1429176-A (GB)
Title: Universal joints
IPC: F16J15/52
Filed: 1972-07-07
Abstract: 1429176 Universal joints; valves GKN TRANSMISSIONS Ltd 12 June 1973 [7 July 1972] 31907/72 Headings F2U and F2V [Also in Division E2] In a telescopic universal joint comprising an inner member 14 entering a chamber 13 in an outer member 10, 110 with torque transmitting balls 15 therebetween, a valve for releasing air from the chamber 13, 113 when the pressure therein exceeds ambient has a closure member 33, 140 biased to a closed position from which it can be moved radially outwardly by centrifugal force to an open position when the joint is rotated about its axis. In one form the member 33 is an 0-ring seating between a flange on an eccentric disc 28 and an end wall 12 of the chamber, an eccentric mass 35 serving to open the valve, a stop ring 36 limiting movement of the 0-ring. In another form the rubber closure member 140 has a thin flange overlying the radially outer ends of holes 139 in the chamber end wall 112. Also shown is a lost motion ball-and-socket joint 20 ... 26 (see Division E2).
Patent GB-1407364-A (GB)
Title: Arpeggio keyboard
IPC: H01H21/00
Filed: 1973-07-05
Abstract: 1407364 Electrophonic musical instruments HAMMOND CORP 5 July 1973 [17 July 1972] 32036/73 Heading G5J To play on a separate arpeggio keyboard of an electronic organ in succession only those notes of a multi-octave chromatic scale related octavely to keys currently depressed on a principal keyboard, without the complication of a separate mechanical keyboard, an assembly of five strip components is mounted in a decorative metal channel on the vertical panel between upper and lower keyboards. The invention lies in the strip components comprising a two sided printed circuit base 12, an elongated insulating spacer gasket 14, an insulating film contact strip 16 carrying conducting areas to bridge, when depressed, contact strips (Au or Ni or Cu) of the printed circuit, a <SP>1</SP>/ 16  inch foamed vinyl pressure pad and a dished PTFE low friction cover 0À0035 inch thick. On its underside the base carries longitudinal bus strips 40 for the twelve chromatic notes, connected via plated-through holes 32 to forty-nine transverse strips 30 pitched at 0À172 inch along the upper side corresponding to four octaves inclusive (C to C<SP>1111</SP>). Adjacent to each strip is a second transverse strip 34 connected via a terminal pin 36 on the board edge to the note-keying circuits of the organ, such that when any such pin is grounded its note sounds; each bus 40 is grounded whenever its note in any octave is played on the principal keyboard. The contact strip 16, when locally depressed by running a finger tip along the overlying exposed PTFE strip, bridges in succession the two strips 30, 34 of each note by means of its isolating bridging contact area 68, thus sounding these notes activated by the principal keyboard. The low friction cover overlaps the complete base, the spaces and contact strip only the active area, the pressure pad only the aperture area of the spacer. All are secured by pressure sensitive adhesive and located by pins through holes 70.
Patent GB-359216-A (GB)
Title: Improvements in or relating to wood-framed casement windows, french windows, doors and the like
IPC: E06B7/24
Filed: 1930-10-25
Abstract: 359,216. Draught and weather excluders. RUSHWORTH, F., Victoria Works, Victoria Street, Rarwdon, near Leeds. Oct. 25, 1930, No. 32082. [Class 20 (iii).] A draught and weather excluder for wooden case. ment windows, Frenc h windows, doors, and the like, consists of metal or other strips 7 fixed in the sash or frame and adapted to engage a groove or rabbet in the frame or sash at the meeting edges, and to allow free hinging movement. Grooves 9 with drainage holes 10 are formed in the sash or frame beneath the strips 7 to carry away rain-water &c. The invention is illustrated in Figs. 2, 3 and 4 as applied to a fanlight and casement, and Fig. 5 shows the application at the hinged edge of the casement.
Patent GB-1024262-A (GB)
Title: A mine roof hydraulic support element
IPC: E21D15/44
Filed: 1963-08-14
Abstract: 1,024,262. Hydraulic pit props. H. ZILLER. Aug. 14, 1963 [Aug. 16, 1962], No. 32082/63. Heading E1E. The telescopic components 1, 4 of an hydraulic pit prop are interconnected by a rolling sealing element 3 adapted to take on the U-shaped configuration shown when the prop is half extended. The upper member is provided with a piston 7 which is located between guide tubes 5, 6 carried by the lower member 1 and carries abutment stops 16b, 16c engaging a pin 15 mounted on the tube 6. The sealing element is clamped between plates 11, 12 and the piston 7 provided with a spherical seating 17 for a roofbar 18 positioned by three springs 19.
Patent GB-1366005-A (GB)
Title: Substuted cyanobenzimidazoles
IPC: C07D235/24
Filed: 1972-07-10
Abstract: 1366005 1-Cyanobenzimidazoles MERCK & CO Inc 10 July 1972 [12 July 1971] 32140/72 Heading C2C Novel 1 - cyanobenzimidazole derivatives having the general formula wherein R is a trifluoromethyl or cyano radical and n is 2, 3 or 4 are prepared by treating a benzimidazole of the formula with a dispersion of an alkali metal hydride or calcium hydride in a suitable organic solvent and treating the resulting reaction mixture with a cyanogen halide. The novel compounds may be used as anthelmintic agents and as ectoparasiticides, either alone or in the form of compositions when mixed with a pharmaceutically acceptable carrier.
Patent GB-648775-A (GB)
Title: Improvements in and relating to book binding machines
IPC: B42C13/00
Filed: 1947-12-05
Abstract: 648,775. Endless conveyers. BURN & CO., Ltd., J., MERCER, J. L. C., and HEATH, A. J. Dec. 5, 1947, No. 32154. [Class 78 (i)] [Also in Group XV] A conveyer for feeding book sections to a binding press (see Group XV) comprises flat plates 10 mounted on an endless chain 16 passing round sprockets 18, 19 and over a support 24; spaced brackets 22 serve as or carry pushers (see Fig. 9, referred to below). The conveyer is intermittently advanced by a free-wheel 26 connecting the sprocket 18 to a rod 27 longitudinally oscillated by a lever 30 spring- and weight-pressed against a cam 36 on a continuously-rotating shaft 38. A toothed sector, or a plain sector 130 faced with a length of chain 128, locks the sprocket 18 to prevent backward movement and is withdrawn when a second cam 150 on the shaft 38 rocks its spring-loaded mounting 138 through a push-rod 146. A pin-and-slot adjustment 28 controls the conveyer stroke to the nearest whole chain-link length, while the setting of the sector 130 on its mounting 138 may be varied to adjust the position of the pusher brackets 22 during the dwell periods. The book sections are delivered to a shoot 118 by an ejector 113 pivoted to a bracket on the rod 106 and linked to an arm 116 projecting from an oscillating jaw of the press. Fig. 9 shows a pusher attachable to the brackets 22 on the conveyer; one spring-loaded plate 168 is held by a stop 174 just clear of fixed vertical side guides, while the other plate 169 rides along adjustable side guides and accommodates itself to their setting.
Patent GB-1068342-A (GB)
Title: Improvements in or relating to electrophotographic developing compositions
Inventor: GILBERT JOSEPH
IPC: G03G9/13
Filed: 1962-08-22
Abstract: 1,068,342. Electrophotographic developers. OZALID CO. Ltd. Nov.7, 1963 [Aug. 22, 1962], No. 32186/62. Heading G2H. A liquid electrophotographic developer comprises a carrier liquid of high resistivity containing in suspension particles of pigment and in solution a sufficient quantity of isomerized rubber to fix the pigment to the image. In one example, the composition includes phthalocynine blue, isomerized rubber, toluene, and carbon tetrachloride. Other compositions (Examples 3 and 4) include tetrachlorodifluorethane and heptane. Compositions are also given for replenishing solutions for adding to the developer to replace pigment particles used in development. The isomerized rubber forms a thin film over the surface carrying the image to be developed thus fixing the image.
Patent GB-1148557-A (GB)
Title: Improvements in or relating to braking systems
IPC: B60T8/18
Filed: 1967-07-13
Abstract: 1,148,557. Pressure-modifying valves. SOC. ANON. D.B.A. 13 July, 1967 [30 July, 1966], No. 32206/67. Headings F2F and F2V. A pressure-modifying device in an hydraulic braking system for vehicles comprises a resilient metallic diaphragm containing an opening forming a valve seat co-operating with a movable valve member attached to a control element responsive to the outlet pressure and resiliently maintained in a position which keeps the valve open. In Fig. 1 pressure from a master cylinder (not shown) is applied at 20 to a chamber 38 which communicates via opening 32 and chamber 40 with lines 22 and 24 connected to the brake cylinders. When the pressure in chamber 40 reaches a predetermined value, a resilient metal disc 34 moves to the right and via a stem 44 moves a valve 46 to close the aperture 32 in a further resilient metallic diaphragm 30. On further increase in pressure, the diaphragm 30 moves slightly to the right to open the valve again, so that the pressure in chamber 40 rises somewhat, but at a lower rate than the rise in chamber 38. The resiliency of the diaphragm 30 should be less than that of the disc 34, and the operational characteristics may be altered by changing the thickness and resiliency of these. The port 28 may be connected to a source of variable pressure representing, e.g. axle loading, to modify the braking effect thereby. The signal representing axle loading may alternatively be introduced by a linkage and push rod acting directly on the disc 34 (Fig. 2, not shown). In another modification (Fig. 3, not shown) the disc 34 is rigid and the stern 44 is attached to it via flexible bellows or a barometric capsule. In this case the disc 34 has apertures so that the port 28 leads to the braking cylinders, lines 22 and 24 being omitted.
Patent GB-245136-A (GB)
Title: Improvements in devices for supercharging explosion engines by means of a compressor
IPC: F02B1/00
Filed: 1925-12-22
Abstract: 245,136. Dumont, G. Dec. 29, 1924, [Convention date]. Pumps. - In engines supercharged by a compressor C situated between the carburettor A and the engine M, two interconnected controlling valves are provided, e.g. butterfly valves R, 1, the arms of which are joined by a rod 2, one situated between the carburettor and the compressor, and the other between the compressor and the engine. The slow-running passage 3 opens into the induction pipe L<2> beyond the compressor, and is provided with a valve 4 interconnected with the valves R, 1, e.g. by an arm 5 on the rod 2, the valve 4 closing as the valves R, 1 open. A by-pass passage 6 controlled by a valve 7 is provided to allow mixture to be sumpplied by suction if the compressor fails.