baber/WOPTO huggingface dataset:
Patent GB-592778-A (GB)
Title: Improvements in dyes and dyeing
IPC: D06P1/22
Filed: 1945-06-01
Abstract: A leuco vat dyestuff is prepared by mixing an aqueous alkaline solution of a leuco vat dye with sufficient of a neutral water-miscible organic liquid, which is not a solvent for the leuco compound, to effect precipitation of the leuco vat dye. Lower aliphatic alcohols, e.g. methyl alcohol, ethyl alcohol and isopropyl alcohol are suitable water-miscible organic liquids. The aqueous alkaline solution may be prepared by vatting the vat dye in water with sodium hydroxide and sodium hydrosulphite.  Cellulose ester and ether textile materials are dyed by subjecting them to the action of an aqueous dye bath prepared with a leuco vat dyestuff obtained as above, and thereafter converting the leuco vat dye taken up by the material to the parent vat dye by oxidation.  In an example, Calcosol Red BN double paste is vatted with an aqueous solution of sodium hydroxide and sodium hydrosulphite, and the leuco compound precipitated by adding ethyl alcohol.  The precipitate is filtered off and dissolved in water to form a dye bath, and cellulose acetate fabric is dyed in this bath on the jig, washed and oxidized with an aqueous solution of sodium bichromate.  In another example, cellulose acetate fabric is dyed from a bath prepared by dissolving a leuco vat compound obtained similarly from Indanthrene Brilliant Green B paste (dimethoxy-dibenzanthrone).
Patent GB-1418775-A (GB)
Title: Phosphonate ester derivatives having flame-retardant properties
IPC: C08K5/00
Filed: 1973-03-22
Abstract: 1418775 Phosphonate ester derivatives HOOKER CHEMICALS & PLASTICS CORP 22 March 1973 [30 March 1972 (2)] 13907/73 Heading C2C [Also in Divisions C3 and D1] The invention comprises compounds of the general formula ZCH 2 P(O)(OR) 2  wherein R is C 1 -C 6  alkyl C 1 -C 6  haloalkyl, C 2 -C 6  alkenyl, phenyl, or phenyl substituted by halogen, C 1 -C 6  alkyl or C 1 -C 6  haloalkyl, and Z is ASO 2 NH- or (W) m P(O)NH- wherein A is C 1 -C 6  alkyl, phenyl, halophenyl or alkylphenyl, m is 1 or 2, and when in is 2 W is C 1 -C 8  alkoxy and when m is 1 W is C 2 -C 8  alkylene dioxy. They may be obtained by reacting a compound: ASO 2 NHCH 2 OH or with a phosphite triester (RO) 3 P, optionally in the presence of a solvent. The products may be reacted with formaldehyde to give the N- hydroxymethyl derivatives and the main products as well as their N-hydroxymethyl derivatives are useful as flame-retardant agents for a wide range of textile materials and for elastomeric, thermoplastic and thermosetting resins.
Patent GB-230325-A (GB)
Title: Improvements in sash windows and fittings therefor
IPC: E06B3/44
Filed: 1924-06-10
Abstract: 230,325. Shaw, H. G. June 10, 1924. Window-stops for sliding windows. A member 1 formed either wholly or with a part of a cushioning material is secured rigidly to each side rail 2 of the upper sash, from which it projects to act as a buffer against the top rail 3 of the lower sash. The blocks 1 may be of wood and have a block 5 of rubber, leather, &c., fixed to the lower end, as in Fig. 2, or the block may be of rubber having the screw holes provided with metal linings 7, as in Fig. 4.
Patent GB-251122-A (GB)
Title: Improvements in softening the water of and preventing scale in steam boilers
IPC: C02F5/10
Filed: 1925-05-29
Abstract: 251,122. McDermott, T. May 29, 1925. Incrustation and corrosion, preventing.-Water is softened and scale prevented in steam boilers by suspending therein a perforated wooden block A containing compressed swede turnip root with or without the addition of cabbage and heather chopped fine. Soda crystals are added to the feed water to maintain a slightly alkaline solution.
Patent GB-804065-A (GB)
Title: Improvements in or relating to the production and working of refractory metals
Inventor: COOKE WILLIAM HERBERT
IPC: C22B60/02
Filed: 1942-10-07
Abstract: Uranium is produced by reacting a uranium-halogen compound with an alkali metal, an alkaline earth metal or with an alloy of two or more such metals, the process being carried out in a vessel lined with magnesia, formed by coating the interior of the vessel with a paste-like mixture of magnesia, water and a binder, drying the lining at a low temperature and then raising the temperature to a dull red heat.  The binder is preferably magnesium chloride and the magnesia used should contain less than 2 per cent of lime. Specifications 804,063 and 804,064 are referred to.
Patent GB-363603-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B1/48
Filed: 1931-05-13
Abstract: 363,603. Photographic roll-film cameras. KODAK, Ltd., Kodak House, Kingsway, London.-(Assignees of Christie, J. ; 333, State Street, Rochester, New York, U.S.A.) May 13, 1931, No. 14146. Convention date, May 31, 1930. [Class 98 (i).] A pressure plate for roll-film cameras comprises a plate, spring - pressed towards the exposure aperture, and having raised portions limiting the movement forward and means permitting limited movement relative to the camera body. In the form shown, the plate 6 has ribs 18 struck up along the side edges forming a channel for the passage of the film. Springs 15 are mounted on or struck out from the plate 6 and bear against the rear of the casing. Lugs 16 mounted on the corners of the plate engage under blocks forming the ends of the spool chambers and holes 17 may also be provided for loose engagement with pins on the camera body allowing a limited universal movement of the plate. An extension tongue may be provided on the end of the plate lying under the winding-off spool.
Patent GB-333230-A (GB)
Title: Improvements in carburetters
IPC: F02M7/17
Filed: 1929-05-07
Abstract: 333,230. Enderby, G. H. May 7, 1929. Spray carburettors.-A suction-actuated choke throttle B, carrying a fuel needle valve 1 is mechanically connected to and operated by the main throttle lever T in the full-open position of the throttle valve E. The suction acts through passages G, D on a plunger C, the opposite side of which is connected to atmosphere by a passage H. The throttle control rod a engages the lever T through a spring, which enables further movement of the rod a to rotate a shaft b and cause an arm P to lift the throttle B. In a modification in which the main throttle is a sleeve valve surrounding the throttle B, a projection on the sleeve directly engages the throttle when fully open.
Patent GB-955654-A (GB)
Title: Equipment for planning, laying out or demonstrating an automation system for a machine tool
IPC: G09B25/02
Filed: 1959-04-27
Abstract: 955,654. Machinery guards. H. B. F. JENSEN. April 25, 1960 [April 27, 1959], No. 14234/59. Drawings to Specification. Heading F2J. [Also in Divisions B3 and G5] A guard for part of a lathe is a transparent sheet in which is embedded a thin conductor wire which breaks if the guard be fractured. The wire terminates in a two-pin plug by which the guard is mounted. The machine only works if the guard be in place and the wire intact.
Patent GB-1030143-A (GB)
Title: Improvements relating to valve devices for controlling fluid flow
IPC: F16K31/126
Filed: 1964-04-07
Abstract: 1,030,143. Valves. WESTINGHOUSE AIR BRAKE CO. April 7, 1964 [April 17, 1963], No. 14313/64. Heading F2V. A valve comprises a central portion 1, 2 having a double diaphragm piston assembly 5 in which the effective pressure area of the diaphragms 6, 7 can be varied and a first control chamber 14, a cap portion 3 having a second control chamber 12 and a rotatable portion 4 coaxial with and adjacent to the central portion and having a number of passages 34, 35, 36 extending therethrough, each passage, for a specific movement of the rotatable portion, coinciding in turn with a passage 42 to alter the function of the valve. Supply and delivery ports 28, 29 are normally isolated from each other by a spring-loaded valve 25 engaging a seat 27 while the supply pressure acting through aligned passages 34, 42 on the underside of the assembly 5 lifts a valve 17 to connect the delivery port 29 to a vent 23. To close the valve 17 and open the valve 27, pilot pressure is admitted to the chamber 12 through a connection 15. The effective areas of the diaphragms 6, 7 may be altered by replacing the disphragm followers 8, 9 and retainer rings 62 . . . 65. When passage 42 is closed by a blanked recess 51 on the rotatable portion 4 and a valve 57 is unscrewed to open position, the ports 23, 29 and 28 become supply, delivery and exhaust connections, respectively. Supply pressure lifts the valve 17 and flows to the port 29 until pilot pressure in chamber 14 closes valve 17 on to the valve 25 lifting the latter from its seat to place the delivery port 29 in communication with the exhaust port 28. A biasing pressure or vacuum may be admitted to an intermediate control chamber 13 through a port 16. Further rotation of the portion 4 to bring a passage 35 into alignment with the passage 42 causes the valve to close when outlet pressure has risen sufficiently to overcome the pilot pressure. One diaphragm may be omitted and a loading spring provided in the chamber 12 or 13.
Patent GB-877015-A (GB)
Title: Improvements in or relating to the production of glossy-coated paperboard sheets
Inventor: CURLER HOWARD J
IPC: D21H19/18
Filed: 1959-04-27
Abstract: <PICT:0877015/III/1> A method of providing a glossy wax surface on a paperboard sheet 10 comprises applying a coating of molten wax on at least one surface of the sheet 10, e.g. by spraying at 22, pressing the entire coated surface while the wax is plastic into intimate non-slipping contact with a cooled, highly polished surface, e.g. a metallic endless belt 30, maintaining the belt surface at a temperature below the melting point of the wax, e.g. 100 DEG F., maintaining the belt 30 and sheet 10 in contact until the wax is solidified, and removing the coated sheet 10 from the belt 30, e.g. by an air blast, the wax having an adhesion to the belt surface of at least 1.5 gm./inch measured at the temperature of the cooled belt surface.  The adhesion is measured on a Socony-Vacuum seal strength tester.  A stack of sheets 10 are fed singly to the spray coating apparatus 20 and led on heated guides 27 to the belt 30 beneath a squeeze roll 35 which is of slightly larger diameter at each end than at the middle and which provides a pressure on the sheets 10 controlled by air cylinders 37. Cooling water is circulated through orifices 40 below the belt 30 which contacts the water surface in a tank 43, and an adjustable hold-down roll keeps the sheets 10 in contact with the belt 30 until just before the belt passes round a sheave where the sheets leave the belt.  The adhesion of the wax to the belt should not exceed 15 gm./inch and is preferably 2 to 10 gm./inch, the value being attained by modifying either the wax or the belt surface, e.g. by adding silicones, e.g. dimethyl siloxane, to the wax, or applying a silicone release agent to the belt.  The temperature of the belt is preferably maintained at least 40 DEG F. below the melting point of the wax but should be above the dew point.
Patent GB-835602-A (GB)
Title: Improvements in or relating to electric pulse lengthening apparatus
Inventor: ROBINSON ALAN SEYMOUR
IPC: H03K5/04
Filed: 1957-05-06
Abstract: 835,602. Counting apparatus. GENERAL ELECTRIC CO. Ltd. April 30, 1958 [May 6, 1957], No. 14354/57. Class 106 (1). [Also in Group XL (c)] Revolution-counting apparatus for a highspeed coil winding machine comprises a contact 26 which is opened for a short period (e.g. 2 millisecond) once per revolution of the machine, a transistor pulse lengthening circuit comprising transistors 1 and 2, an output transistor 29 and counting mechanism comprising an electromagnetic device 33 actuating a counter 34. The application of a negative pulse to the base electrode of transistor 1 due to the opening of contact 26 causes the transistor to conduct, thus discharging capacitor 17. The increase in potential at the collector of transistor 1 is applied to the base of normally-conducting transistor 2 to switch it off. After the contact 26 has closed, transistor 1 ceases to conduct and capacitor 17 charges negatively through resistor 12 until such a potential is developed across the capacitor that Zener diode 18 breaks down, thus applying a negative potential to the base of transistor 2 which consequently conducts once more. The opening of contact 26 consequently produces a lengthened negative pulse at the collector electrode of transistor 2; this is applied to transistor 29 to actuate the revolution counter 33, 34.
Patent GB-652896-A (GB)
Title: Improvements in or relating to frequency modulation oscillation generators
IPC: H03C3/09
Filed: 1948-05-28
Abstract: 652,896. Frequency modulation. STANDARD TELEPHONES & CABLES, Ltd. May 28, 1948, No. 14449. Convention date, June 2, 1947. [Class 40 (v)] A frequency modulated oscillation generator comprises a pair of grid-controlled valves 10, 11 and a tuned oscillatory circuit 30, 31 connected in like phase to the valve anodes 24, 25 wherein voltages of mutually different phases are fed back from the anode circuit to the valve grids 14, 15 and signal voltages are fed to valve grids 20, 21 for correspondingly and oppositely varying the respective mutual conductance of the valves so as to vary the frequency of oscillation. The grids 14, 15 are negatively biassed so that in the absence of signal voltages the oscillator generates a predetermined frequency, the voltage fed back to grid 14 passing through a phase-shifting network 37 producing a voltage on the grid leading that at a point B in the anode circuit by about 30 degrees, whilst the voltage fed back to grid 15 passes through a network 38 producing a voltage on the grid lagging that at the point B by about 30 degrees. The signal voltages applied to grids 20, 21 serve to vary the bias on one valve an equal and opposite amount to that at the other so that the mutual inductance of the valves are correspondingly altered, carrying the frequency of oscillation to shift from the predetermined value.
Patent GB-456641-A (GB)
Title: Improvements in control devices for printing machines
IPC: B41F33/08
Filed: 1936-05-22
Abstract: 456,641. Printing - machines; feeding sheets. DRESDEN - LEIPZIGER SCHNELLPRESSEN-FABRIK AKT.-GES., Coswig, near Dresden, Germany. May 22, 1936, No. 14527. Convention date, Aug. 17, 1935. [Classes 100 (i) and 100 (ii)] In a printing-machine a feeler device is provided which acts in conjunction with a common driving-member, e.g. a rod 9 which is raised by an oscillating lever 5 to operate the front stops 22, a pivoted cam 47 which allows the grippers 59 to close on the sheet, and also to raise the feeler members 26 and a sheet-guiding or smoothing device 39. If the rod 9 is not raised a chain 17 is operated to throw-off the printing impression member. This chain passes over pulleys 7, 16 carried respectively by the lever 5 and rod 9, and is fixed to a pin 18 on the lever 5. If a sheet is not fed correctly to the feed table 21 the feelers 26 engage apertures 25 in the table and hold fast a shaft 30 which is connected by a lever arm 31 to the rod 9. The rod 9 thus remains fixed as the pivoted lever 5 rises under the action of a grooved cam 3. As the chain pulley 16 does not rise, the raising of the pin 18 and pulley 7 operates the chain to throw-off the impression. If the feelers 26 are prevented by a sheet from engaging the apertures 25, the chain is not operated as the pulley 16 rises also, and in addition the following operations take place which are stopped if the rod 9 does not rise. The bottom end of rod 9, which is guided by a cam groove 15, moves to the left as the lever 5 begins to rise, and a projection 20 on the rod is engaged by a shoulder 19 in a recess 8 of the lever 5 through which the rod 9 passes. The raising of the rod 9 is assisted by a spring 10, and as the rod rises the shaft 30 is rotated to raise the feelers 26 by the action of an abutment 67, and the sheet guiding and smoothing device 39 is raised by the action of a spring- controlled bolt 33 carried by the arm 31 on an abutment 37 on a sleeve 38 which encircles the shaft 30 and carries the device 39. A roller 41 carried by the rod 9 acts on an arm 42 of a pivoted lever 43 which controls the position of a pivoted cam 49 and moves it to the position in which the grippers 59 can close on the sheet. The cam 49 is continuous with a fixed cam 50 which opens the grippers during transfer of the sheet. The pivoted lever 43 also acts to depress the front stops 22 by acting on an adjustable stop 65 on the lever 63 of the stops.
Patent GB-673757-A (GB)
Title: Improvements in or relating to blind riveting assemblies
IPC: B21J15/04
Filed: 1949-05-31
Abstract: 673,757. Making rivets. BRITISH UNITED SHOE MACHINERY CO., Ltd., and GREWCOCK, H. May 30, 1950 [May 31, 1949], No. 14528/49. Class 83 (iv). Extruding.-A blind riveting assembly comprises a mandrel cold forged by dies from wire stock as described in Specification 501,415 and a rivet made by extruding a metal blank through an annular opening into tubular form of uniform external cross-section. The rivet R, Fig. 1, has a circular domed head 19 and a tubular barrel 21 the bore 11 of which snugly receives, for a large part of its length, the stem 15 of a mandrel M. The rivet is made from an annular blank P, Fig. 2, of aluminium or aluminium alloy by pressing between lower and upper dies 25, 27 of a press comprising a frame 29 and a reciprocatory head 31 secured to two vertical pillars 33 guided in bores 35 in the frame 29. The lower die 25 has a bore 37 and a counterbore 39 at its upper end. Beneath the bore 37 the frame provides a sleeve 43 within which slides a member 45 having an ejector pin 47. The die 27 has two. cylindrical portions 51 and 53 the smaller portion 51 being a close sliding fit within the bore 39. The die has a concavely-curved lower surface 55. A mandrel 57 of diameter equal to the stem 15 of the rivet mandrel is secured to a boss 60 and slides within the bore of the upper die 27. In operation, the upper die extrudes the blank P into the annular space between the mandrel 57 and the bore 37 of the lower die and at the same time the surface 55 of the upper die forms the rivet head. On retraction of the upper die the rivet is ejected by the pin 47 or if the rivet is fast on the mandrel 57 this may be retracted within the die to release the rivet. Specifications 558,156, [Group VII], 578,132 and 578,363 also are referred to.
Patent GB-726362-A (GB)
Title: Hydroperoxides of diparatolyl methane and 1:1-diparatolyl ethane, and the production thereof
IPC: C07C409/08
Filed: 1953-05-22
Abstract: The invention comprises di-p-tolyl methane hydroperoxide and 1 : 1-di-p-tolyl ethane hydroperoxide and their preparation by contacting di-p-tolyl methane or 1 : 1-di-p-tolyl ethane in a dispersed state with oxygen or an oxygen containing gas such as air at 90-150 DEG  C. Preferably the reaction is carried out by contacting the hydrocarbon, which has preferably been pretreated by hydrogenation at 60-80 DEG C. in the presence of a Raney nickel catalyst, in an aqueous emulsion, with a mixture of air and added oxygen at 50-100 atmospheres pressure, in the presence of a catalytic amount of the corresponding hydroperoxide.  Suitably the initial stages of the reaction may be carried out at a higher temperature of for example 115 DEG  C., which is lowered during the later stages of the reaction.  Metallic silver may be present as a catalyst.  The process may also be carried out by introducing oxygen into a vortex created by introducing the hydrocarbon tangentially into a reaction chamber such as is described in Specification 708,355, [Group II].  Examples are given.
Patent GB-259153-A (GB)
Title: Process for the manufacture of quinine salts of oxyphenyl-arsinic acids
IPC: C07F9/70
Filed: 1926-06-09
Abstract: 259,153. Hoffmann-La Roche & Co. Akt.-Ges., F. Nov. 6, 1925, [Convention date]. Samples furnished. Quinine salts of oxyphenylarsinic acids are prepared by interaction of the alkaloid and the acid, or by treating salts of oxyphenylarsinic acids with soluble quinine salts. The quinine salts of acetylamino-oxyphenylarsinic acids, described in Specification 249,849 are excluded. Examples are given of the preparation of the quinine salt of p-oxyphenylarsinic acid.
Patent GB-114273-A (GB)
Title: Improvements in or relating to Driving Mechanisms, particularly adapted for use with Printing Presses.
IPC: B41F3/80
Filed: 1917-10-08
Abstract: 114,273. Goss Printing Press Co., (Goss Printing Press Co.). Oct. 8, 1917. Driving printing-machines.- In two-speed driving mechanisms, particularly for printing- machines, the low-speed drive is effected through a friction clutch, comprising a driving- drum which drives a co-axial driven member through one or more friction shoes engaging the periphery of the drum, the arrangement being such that when the high-speed gear is thrown in, the driven member rotates at a higher speed in the same direction and the shoes move clear of the drum. As shown, the motor shaft 10 carries a fast gear 19 and a loose gear 13 which drives the printing-press or other machine through a suitable train of mechanism. The gears 19, 13 mesh with loose and fast gears 20, 29 on a countershaft 21 on which is also loosely mounted a, rotary member 23 which can be operatively connected to the shaft 21 by a clutch 24 of any suitable type. A similar clutch 14 is provided to connect the gear 13 directly to the shaft 10. The member 23 is the driven member of the low-speed clutch, the driving member of which is a drum 30, Fig. 2, secured to the hub 31 of the gear 20. The drum 3J drives the member 23 through friction shoes 32 carried by links 33 pivoted to the member 23 and normally pressed into engagement with the drum 30 by springs 35. The drum is preferably provided with longitudinal corrugations and the shoes 32 with facings 32a of leather or other frictional material. When the clutch 14 is opened and the clutch 24 closed, the machine is driven at low speed through the gears 19, 20, drum 30, shoes 32, member 23, and gears 29, 13. By closing the clutch 14, the press is driven at high speed directly through the gear 13 and the consequent increase in speed of the member 23 throws the shoes 32 clear of the drum 30 by centrifugal force. On again opening the clutch 14, the shoes again engage the drum. By this arrangement, the press speed cannot fall below that of the low-speed gear and sudden starting and consequent damage is prevented.
Patent GB-577163-A (GB)
Title: Improvements in or relating to luminous dial instruments
IPC: G04B19/32
Filed: 1944-07-31
Abstract: 577,163. Luminescent materials. KARFIOL, E. July 31, 1944, No. 14608. [Class 39 (i)] In dial instruments, the dial is painted with luminescent material and the pointer is provided with a portion of radioactive material which excites the adjacent area of luminescent material. In the construction shown, the pointer is three pronged, the centre limb 6 being the indicating part and radioactive material being on the two outer arms in order to illuminate the region around pointer 6.