baber/WOPTO huggingface dataset:
Patent GB-324602-A (GB)
Title: Improvements in or relating to dusting tools for suction cleaners
IPC: A47L9/06
Filed: 1929-05-14
Abstract: 324,602. Hoover, Ltd., (Hoover Co.). May 14, 1929. Vacuum cleaning- apparatus. - In a means of attaching a brush to the suction nozzle of a vacuum cleaner, an adaptor 14 of rubber, or other resilient material, is constructed to fit on a beaded nozzle 12 and also retain the backing 16 of a brush 18. The walls 19 of the adaptor are extended almost as far as the free ends of the bristles, to cause all the suction air to pass over the surface being cleaned.
Patent GB-884048-A (GB)
Title: Shield device for shielding a print receiving surface of a top sheet of a plurality of sheets of record material having transfer material therebetween against receiving an inked impression
IPC: B41J35/26
Filed: 1960-04-29
Abstract: 884,048. Ink-ribbon mechanisms. NATIONAL CASH REGISTER CO. April 29, 1960 [May 4, 1959], No. 15108/60. Class 100(4) A device for typewriters and the like for shielding the top copy but allows impression to be made on the under copies comprises an inkimpervious flexible membrane 25 slidably mounted behind an ink-roller so as to selectively prevent printing on the top copy by certain typemembers arranged in a printing line. The membrane 25 may consist of a tough polymer film such as cellulose acetate, polyethylene-terephthalate, vinyl chloride-vinylidene chloride copolymer, polyethylene, polyvinyl alcohol, and cellulose acetate-butyrate copolymer of a few thousands of an inch in thickness. It is slidable for adjustment in a mounting 26 pivotally attached to a ribbon guide member 30 so the whole shield may be moved out of effective relationship with the line of printing.
Patent GB-395849-A (GB)
Title: Self fixing fastener for stair carpets and the like
IPC: A47G27/06
Filed: 1932-05-28
Abstract: 395,849. Stair-carpet fasteners. BALE, G. F., 15, Mountfield Wood, Finchley, London. May 28, 1932, No. 15182. [Class 52 (v).] A stair-carpet fastener comprises a carpetholder 27 arranged to fit into the angle formed by the tread and riser and to press against the carpet, and a fixing device which is carried by the holder 27 and embodies oppositelydirected and operatively-connected prongs 40, 43 adapted to penetrate the riser and tread when the prongs are moved relatively to each other' to increase the distance between them. The carpet-holder 27 comprises a triangular part 28, which is shaped at 34 to press the carpet against the tread and riser, a rectangular part 30 providing a mounting for the fixing device, and an end member 29 which is shaped in the form of a right-angled triangle tc engage the tread and riser. The prongs 40, 43 are provided respectively on two members 38, 39 which are pivoted together at 42 and are accommodated in a slot 37 in the part 30 of the carpet-holder. The prong 40 is adapted to operate in a slot 41 provided in a lug 36 on the part 30, and the prong 43 operates in a slot 44 in a lug 35. When the member 38 is depressed from the position, shown in Figs. 1 and 3, the prongs 40, 43 penetrate the riser and tread. The downward movement of the member 39 is adapted to continue until a stop 45 on the member engages the lug 35, after which an angular movement only is imparted to the member. The member 38 is depressed until a shoulder 47 thereon lies along the outer face of the part 30. Interengaging projections and indentations 49 are formed on the members 38, 39 to lock them together. A stop 46 on the member 39 engages the back of the part 30 to prevent accidental disengagement of the members 38, 39 when the member 38 is raised.
Patent GB-769666-A (GB)
Title: Improvements in foamosols and expanded plastics therefrom
IPC: C08J9/10
Filed: 1955-05-26
Abstract: A plastisol is mixed with a tert. alkyl ammonium nitrite in which the tertiary alkyl group contains four to nine carbon atoms to produce a composition which may be foamed.  Polyvinyl chloride and copolymers of a major proportion of vinyl chloride with vinyl acetate, propionate or butyrate, vinylidene chloride or methyl or ethyl maleate or fumarate mixed with such plasticizers as di-2-ethylhexylphthalate, dicapryl, di-iso-octyl or di-isononyl phthalate, dibutyl adipate or sebacate, dioctyl sebacate or azelate, triphenyl phosphate, alkyl diphenyl phosphate, or the condensate from dicarboxylic acids, e.g. adipic, azelaic and sebacic, and one or more glycols, e.g. ethylene, propylene and diethylene glycols are specified plastisols.  Volatile dispersants, e.g. ketones and hydrocarbons, stabilizers, e.g. lead silicate, pigments and fillers, e.g. clay, may also be present.  A preferred ratio of polyvinyl chloride to plasticizer is 2 : 1 to 2 : 3 and preferred amounts of the nitrite are from 1 to 35 per cent.  It is preferred to heat the mixture under pressure to between 110 DEG  and 200 DEG  C. in a confined space, cooling, and heating under free conditions to 100 DEG to 125 DEG  C.ALSO:Tertiary-alkyl ammonium nitrites in which the t-alkyl group contains four to nine carbon atoms for use as blowing agents for plastisols are prepared by treating a t.-alkylamine with nitrous fumes, or the acid salt of the amine with sodium nitrite in an organic solvent such as methanol or isopropanol.  A novel method comprises treating a t.-alkylamine with sodium bisulphite in isopropyl alcohol and then adding sodium nitrite, sodium sulphate being filtered off at the end of the reaction and the solvent removed.  In examples: (1) anhydrous hydrochloric acid is passed into a solution of t.-butylamine in methanol at below 10 DEG  C., sodium nitrite added, the sodium chloride filtered off and the methanol removed under reduced pressure; (2) and (3) t.-butyl amine is added to sodium bisulphite suspended in isopropanol, sodium nitrite added, followed by filtering and evaporation under reduced pressure. T.-amyl, -octyl, and -nonyl amines are similarly treated; (4) nitrous fumes are passed into a solution of t.-octylamine in water-isopropanol, stripped under reduced pressure and dried to give t.-octyl ammonium nitrite.
Patent GB-529128-A (GB)
Title: Magnesium carbonate composition and method of preparation
IPC: C01F5/24
Filed: 1939-05-22
Abstract: 529,128. Magnesium carbonate. PLANT RUBBER & ASBESTOS WORKS. May 22, 1939, No. 15211. Convention date, June 9, 1938. [Class 1 (iii)] [Also in Group V] A slurry of magnesium carbonate crystals having self-setting properties and useful for forming sound and heat insulating materials is formed by precipitating a solution of a magnesium salt, such as seawater bittern with an alkali metal or other carbonate. The reaction is carried out in concentrated solution with agitation and at temperatures up to 120‹ F. to obtain fine needle-like crystals. Caustic soda, magnesia, lime &c. may be added to decompose magnesium bicarbonate. The slurry is filtered, washed and placed in moulds which may be heated to 140-195‹ F. preferably by live steam. After setting the blocks are removed from the moulds and dried. Reinforcing materials such as asbestos fibres, vermiculite or diatomaceous earth may be mixed with the slurry.
Patent GB-1353162-A (GB)
Title: 17alpha-propadienyl steroids
IPC: A61K31/567
Filed: 1971-05-17
Abstract: 1353162 17α-Propadienyl steroids SANDOZ Ltd 17 May 1971 [21 May 1970 25 Jan 1971] 15237/71 Heading C2U The invention comprises #<SP>4</SP>-steroids of Formula I and also the #<SP>5(10)</SP>-isomers thereof (wherein R 1  is Me, Et or Pr<SP>2</SP>, and R 2  is H, Me, acetoacetyl or C 2-4  alkanoyl) and their preparation by acid hydrolysis of the corresponding 3-alkoxy-#<SP>2,5(10)</SP>, 3-alkoxy-#<SP>3,5</SP>, 3,3-dialkoxy- #<SP>5(10)</SP>, 3,3-ethylenedioxy-#<SP>5(10)</SP> or 3,3-trimethylenedioxy-#<SP>5(10)</SP> compounds. The inventive compounds are interconvertible by 17-esterification and by isomerization of #<SP>5(10)</SP> to #<SP>4</SP>. 3,17# - Dimethoxy - 9α - methyl - 17α - propadienylestra-2,5(10)-diene (LVII) is prepared from 17,17 - ethylenedioxyestra - 1,3,5(10)- triene-3,11#-diol (L) by the sequence L # 3- methoxy - 17,17 - ethylenedioxyestra - 1,3,5(10)- trien - 11# - ol # 3 - methoxy - 17,17 - ethylenedioxyestra - 1,3,5(10) - trien - 11 - one # 3- methoxy - 9α - methyl - 17,17 - ethylenedioxyestra- 1,3,5(10) - trien - 11 - one (LI) # LI hydrazone # 3 - methoxy - 9α - methyl - 17,17 - ethylenedioxyestra - 1,3,5(10) - triene # 3 - methoxy- 9α - methylestra - 1,3,5(10) - trien - 17 - one (LII) # 3 - methoxy - 9α - methylestra - 2,5(10) - dien- 17# - ol (LIII) # 3 - methoxy - 9α - methylestra- 2,5(10) - dien - 17 - one # 3 - methoxy - 9α- methyl - 17α - (3 - dimethylamino - 1 - propynyl)- estra - 2,5(10) - dien - 17# - ol (LIV) # LIV methiodide (LV) # 3 - methoxy - 9α - methyl- 17α - propadienylestra - 2,5(10) - dien - 17# - ol (LVI) # LVII. In the above sequence, 3-methoxy may be replaced by C 2-4  alkoxy and 13-methyl may be replaced by ethyl or n-propyl. The conversion of LII to LIII may be effected in one step or in two steps via 3 - methoxy - 9α - methylestra - 1,3,5(10)- trien-17#-ol (not exemplified). The conversion of LV to LVI may be effected with NaAlH 2 - (OCH 2 CH 2 OCH 3 ) 2 , LiAlH 4 , LiBH 4 , LiGaH 4 , Mg(AlH 4 ) 2 , LiAlH(Me)(Bui) 2 , LiAlH(OMe) 3 , AlHEt 2  or B 2 H 6 . The #<SP>4</SP>-steroids of Formula I are said to possess progestational activity and may be made up with carriers into pharmaceutical compositions for oral and parenteral administration.
Patent GB-1355525-A (GB)
Title: Digital filters
IPC: H03H17/02
Filed: 1971-05-17
Abstract: 1355525 Active filters SIEMENS AG 17 May 1971 [3 June 1970] 15250/71 Heading H3U A digital filter having a frequency characteristic corresponding to that of a given analogue filter circuit configuration is formed by replacing any reactive two-terminal element by a single port delay element, any line element by a multi-port element having two ports with delay characteristics, any non-reactive two-terminal element by a single port element with no delay, any non-reactive four-terminal element by a multi-port element with no delay, all the elements being interconnected by impedance matching adaptors.
Patent GB-1528824-A (GB)
Title: Frequency modulation discriminators
IPC: H03J7/02
Filed: 1976-04-14
Abstract: 1528824 Frequency discriminators; muting circuits SONY CORP 14 April 1976 [24 April 1975 8 May 1975] 15309/76 Headings H3A and H3Q An FM discriminator comprises at least two pairs of differential switching circuits 12, 13 responsive to a frequency modulated signal and its phase shifted version to produce first and second output signals in opposite phases, a first signal source Q21, Q22, Q32 producing at T1 a first A.C. signal whose duty ratio is dependent on the frequency of the first and second output signals, a second signal source Q25, Q26, Q34 whose output at T2 is opposite in phase to that of the first, a bias source V2 and a resistor R7 for maintaining a predetermined D.C. level on the two A.C. signal outputs. The discriminator includes a first differential amplifier 11, a phase shift circuit and an input circuit 10, M2 for supplying the input signals to 12, 13. The discriminator provides two outputs which are in opposite phases and proportional to the frequency deviation from the discriminator centre frequency. The discriminator also includes a further arrangement 25, 27 for deriving a third output at T3. The discriminator output at T3 may be muted by applying a muting signal at T4 to base of Q43 to turn off 25, 26 and render the output at T3 to become zero. Alternatively as in Fig. 9 (not shown), the output signals T1, T2 may be muted by turning on a shunt FET switch. The discriminator may be included in frequency control loop and a shunt switch (Figs. 8, 9, not shown) disables AFC operation.
Patent GB-1177584-A (GB)
Title: A Method and Apparatus for Producing a Continuous Rod of Loose, Fibrous Particles, More Particularly Cut Tobacco.
Inventor: GEYER HERBERT
IPC: A24C5/18
Filed: 1968-03-30
Abstract: 1,177,584. Feeding tobacco. TABAK-UND INDUSTRIEMASCHINEN DRESDEN VEB. 30 March, 1968, No. 15433/68. Heading A2C. In an apparatus for producing a continuous tobacco rod in which a pneumatically conveyed stream of tobacco is fed at high speed to a transfer point located with clearance from the peripheral jacket 40 of a suction conveyer wheel 39 and the tobacco particles are transferred from there in the form of a jet to the jacket 40, the suction conveyer passage for conveying the tobacco from a distributor (Fig. 1, not shown) to the wheel 39 is divided into several passage tubes 19, 20, 21, the tubes being directed at such an angle of feed that their extended longitudinal medial lines intersect the periphery of the wheel 39. The tubes 19, 20, 21 are conically flared to receive cut tobacco from a conventional distributor in which the tobacco is fed from a reservoir (1) via a spiked roller (5), a stripping roller (6), a beater roller (7), a scattering blanket (8), a deflecting roller (9) and a transfer roller (10) to the flared ends of said tubes. The tubes 19, 20, 21 lead into a closed flow chamber 25 connected to a suction source through openings 29 and communicating with the tubes 19, 20, 21, through perforated windows 28 in said tubes. The tobacco stream formed on the wheel 39 is trimmed in conventional manner.
Patent GB-1002699-A (GB)
Title: Improvements in blade coaters and blades for blade coaters
Inventor: STALMUKE CONSTANTINE JOHN
IPC: B05C3/18
Filed: 1962-04-24
Abstract: 1,002,699. Coating webs. OXFORD PAPER CO. April 24, 1962, No. 15436/62. Heading D1L. In a "trailing blade" web coating apparatus of the type described in Specification 1,002, 698, the blade 23 is supported at an angle of between 40 degrees and 50 degrees with respect to the tangent plane to the backing roll 12 along the line of intersection of the plane of support with the surface of the roll and has an initial surface angle A of less than 40 degrees and a toe angle B of between 60 degrees and 90 degrees. The optimum value of the initial surface angle A is 29 degrees to 31 degrees. The blade, which is preferably of spring steel 0. 025 inches thick, has the surface 28, 30 which define the toe angle B, ground thereon from the toe 29<SP>1</SP> towards the rear of the blade. The heel of the working surface of the blade is preferably rounded to have a radius R between 0.006 and 0.008 inches or alternatively a flat bevel is ground on the heel. The working face 28 and adjacent surfaces are preferably chromium plated to a depth of 0. 003 to 0. 0030 inches.
Patent GB-1426975-A (GB)
Title: Device for storing cord by winding
IPC: B65H75/16
Filed: 1974-04-08
Abstract: 1426975 Reels HELMAC-ROTH Ltd 8 April 1974 [9 April 1973] 15443/74 Heading B8M A device for storing slack cord or (electric) cable intermediate its ends by winding comprises a drum 10 rotatably and detachably mountable on a boss 22 by slidable engagement of a bead 24 with a groove 26. Alignment of shallow and deep slots 34 and 32 (in a wall 30 extending from a base plate 20) with deep and shallow slots 12 and 14 form apertures through and between which the cord &c. is passed. Rotation of a cover plate 18 relative to plate 20 winds the cord at two positions around drum 10. One or the other of plates 18, 20 may be wall-mounted after or before and/or during the winding operation.
Patent GB-312083-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D17/14
Filed: 1929-05-17
Abstract: 312,083. British Thomson-Houston Co., Ltd., (Assignees of Caughey, R. J.). May 19, 1928, [Convention date]. Regulating.-In order to protect a turbine for a considerable time after being started up, means are provided whereby only a predetermined load can be initially applied to it, it being necessary for the operator to make special adjustments before the governor can allow the machine to take up full load. Further, when the turbine has been shut down, it cannot be started up again without first adjusting the mechanism mentioned above which prevents the initial application of full load. Fig. 1 shows the application to a turbine having a main admission valve 1, and an overload valve 14 for an intermediate stage. The valves are controlled by cams 4, 19 which are actuated by racks on the piston rod 23 of a servo-motor 11. The stem 24 of the pilot valve 13 is connected to a floating lever 25 of a speed-governor system 29, the connection comprising a two-part lever 55, 56, with a tension spring 57. Under normal working conditions these two parts move together as one lever and the governor system controls both valves in the usual way. The manual control, which is imposed during the period of initial load, is effected by locking the end 31 of the lever part 56. Normally this end moves freely in a slot 32 in the rod 33 of a spring-pressed piston 34 which is held up by oil under pressure, admitted by a pipe 36. During the period of initial load a three-way valve 51 is set to connect the oil pipe 50 with a discharge 54. The piston 34 is then in an intermediate position, and the end of the lever 56 is held so that the governor can open the valve 1 but not the overload valve 14. The supply of pressure oil, which may be from the lubricating system to the pipe 36, is controlled by a double-headed valve 43, 44, which is normally held open against a spring 45 by a latch 46. When the latch is tripped to stop the turbine, the valve 43, 44 connects the pipe 36 with a discharge 49. The piston 34 then falls to its lowest position, and the turbine cannot be started up again until the valve 51 has been set to the position corresponding to initial load. The latch 46 may be tripped by an overspeed governor 47 of the type described in Specification 187,069, [Class 122 (iv), Steam engines, Regulating &c.], Fig. 3, shows a modification in which a first stage admission valve 60 is controlled by a governor 74 through a servo-motor system 68. To prevent the opening of the valve 60 beyond a predetermined extent during initial loading, the part 56 of the floating lever 71 is locked by a hook 75 which engages a projection 77 on the casing of the pilot valve 70. A second hook 78 may be arranged to lock the parts of the lever 71 together during normal running.
Patent GB-1458513-A (GB)
Title: Hydraulic circuits
IPC: F04B9/113
Filed: 1973-03-30
Abstract: 1458513 Hydraulic intensifiers PRESSURE DYNAMICS Ltd 1 April 1974 [30 March 1973] 15536/73 Heading F1D Apparatus for producing a substantially continuous supply of working liquid at high-pressure at a nozzle 83 comprises two double acting intensifiers 43, 50 which are operated alternately, the arrangement being such that whilst one intensifier is operating under the action of pressure fluid at a first pressure from a pump 12, one of the low-pressure chambers of the other intensifier is being supplied with fluid at a slightly lower pressure from a pump 13. A spool valve 20, controlled by a solenoid valve 85, supplies pressure fluid from the pump 12 alternately to either a spool valve 32 or a spool valve 36. Valves 32, 36, controlled by solenoid valves 86, 87 supply fluid to one or other of the low-pressure chambers 41, 42, 48, 49. The sequence of operations is controlled by limit switches 104, 105, 106, 107 operated by the low-pressure pistons 51, 58, and pressure switches 94, 95, which are operated when the spool of valve 20 reaches its extreme positions. When valves 32, 36 are in their intermediate positions as shown, pressure on either side of the low-pressure pistons is equalized through lines 39, 40 or 46, 47. Similarly pressure liquid is supplied simultaneously to both intensifiers by the valve 20 in the position shown to ensure a smooth change-over.
Patent GB-728756-A (GB)
Title: Improvements in or relating to a fluid-operated winch
IPC: B66D1/08
Filed: 1952-06-20
Abstract: 728,756. Winch control. PAPE, M. June 20, 1952 [June 20, 1951], No. 15538/52. Class 78 (5). Winch drum 13 is driven by pump 2 driven by motor 1 and is controlled by an eccentric speed control dependent upon load. As shown, motor 1 (Fig. 2) drives the pump portion of fluid drive 2 which in turn drives the motor portion of said fluid drive which through pinion 12 drives longitudinally displaceable shaft 5 which in turn drives drum 13. Displacement of shaft 5 (in proportion to the load on the winch rope) causes displacement of control rods 8, which rods position stops (not shown) that limit the permissible rotation of control cylinder 10 by means of hand lever 15 respectively for raising and lowering. The said cylinder controls the eccentricity of both the pump and motor portions of the fluid drive and the motor portion in turn controls the speed of the winch drum, so that the displacement of shaft 5 positions the said stops so as to limit the motor eccentricity and thus the limiting speeds of the winch for differing loads. The shaft 5 (Fig. 4) is slidably journalled at 18 and 19 in fixed frame 3 positioned within drum 13 and is pressed towards the right by spring 6 carried by movable seating 45 and is pressed to the left by the reaction between pinions 29 and 30<SP>1</SP>, both being driven from gear 30 and being cut with inclined teeth so as to give a leftwards pressure dependent upon load. The drive to the drum 13 is through gearing 30, 29, 30<SP>1</SP> and 32 to internal gear 17 fixed on the drum.
Patent GB-910559-A (GB)
Title: Improvements in or relating to fluid heaters
Inventor: THURLEY JOHN
IPC: F22B21/00
Filed: 1958-05-14
Abstract: <PICT:0910559/III/1> Fluid hydrocarbons are heated for pyrolysis and catalytic reforming in a number of straight parallel tubes 7 spaced within a chamber and heated by a high velocity stream of non luminous gas from a burner 8 which is directed transversely of the tubes 7 so that the stream splits and circulates round the tubes.  The non-luminous flame does not cause the sides of the tubes nearest the burner to overheat.  The burner may direct a horizontal flame between rows of vertical tubes, or a burner at the bottom of the chamber may direct a flame between rows of horizontal tubes.  The tubes nearest the burner may be omitted or shielded from the flame.  The flame may impinge on the end wall of the chamber or on a remote hand of tubes, and the gases may be recirculated to the burner within or outside the chamber.  Specifications 686,749, 686,792, 695,342, 702,782, 718,213, 754,000 and 776,106 are referred to.