baber/WOPTO huggingface dataset:
Patent GB-261124-A (GB)
Title: Improvements in variable speed gear for motor bicycles and the like
IPC: B62M25/00
Filed: 1925-08-27
Abstract: 261,124. Sturmey-Archer Gears, Ltd., and Wilkie, W. Aug. 27, 1925. Variable-speed gearing suitable for motor-cycles yielding four speeds comprises four pairs of spur wheels, one pair d, e being fast on a driven sleeve c, a second pair f, g being mounted fast and one loose on a lag shaft b, a third pair i, h being mounted one fast and one loose on the main or driving shaft a, and a pair j, k on the lay shaft both adapted to be loose or keyed thereto. In the arrangement shown in Fig. 1, the changes are effected by moving two double-ended claw clutches l, m on the main and lay shafts respectively. The gear i has a long boss j<1> upon which the clutch sleeve m is slidably splined. This sleeve is adapted to engage alternatively with clutch teeth b<1> upon the shaft b and teeth g<1> on the face of the gear g. The sleeve m also carries clutch dogs m<1> which pass through holes in the gear into engagement with clutch slots k' in the gear k. The double clutch l is splined on the shaft a and can engage alternatively with clutch faces on the gears e, h. For the first or lowest speed, the clutch m engages the gear k when the train a, i, k, m, b, f, d is operative. For the second speed, the clutch m is returned to the position shown, and the clutch h engages the gear h. The active train is a, l, h, j, m, b, f, d. To effect the third speed, the clutch m is engaged with the gear g. The train is then a, l, h, j, m, g, e. The fourth speed is a direct drive through train a, l e. In a modified arrangement shown in Fig. 4, the same four changes are effected by moving the gears h, j, which remain mutually in mesh and carry the appropriate dog clutch members. Control is effected by forks n<1>, n<2>, Fig. 3, which slide on a fixed guide o and are operated by a hand-actuated disc cam p, which is locked in gear positions by a spring bolt r, Fig. 4.
Patent GB-887391-A (GB)
Title: Analogue-to-digital converter
Inventor: SHAW JOHN CROSLEY
IPC: H03M1/00
Filed: 1959-06-23
Abstract: 887,391. Analogue - to - digital converters. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 19, 1960 [June 23, 1959], No. 21461/59. Class 40 (1). [Also in Group XIX] An analogue-to-digital converter has, for example a number of inputs from capacitors C1-C4 which are charged down from positive H.T. by input information in an electroencephalograph, the input analogue voltages being sampled in succession and supplied to a start pulse generator 11, Fig. 1, and to a holding circuit 12 arranged to supply the input voltage to a comparator 18, for example of the " multiar " type, whose other input is derived from a device 16 such as a phantastron circuit which produces a linearly decreasing voltage when triggered by generator 11, comparator 18 produces an output pulse when its two inputs become equal, and this pulse stops clock pulse generator 21 previously triggered on at the same time as circuit 16. The output of the generator 21 is supplied to a number of counter stages 23-28 (Group XIX), which thus register a binary coded number which is proportional to the analogue input. When the output of circuit 16 reaches its minimum, a bistable circuit 34 supplies a write-out pulse to relays 23<SP>1</SP>-28<SP>1</SP> and a reset pulse to stages 23-28. The reset pulse may be applied to all stages 23-28 simultaneously and a simultaneous write-out obtained from relays 23<SP>1</SP>-28<SP>1</SP>, Fig. 2 (not shown), or the modified arrangement shown in Fig. 3 may be employed. Tube T6 is normally conducting, but a reset pulse from circuit 16, produced when that circuit reverts to its maximum output, fires T5 to operate relay A whose contacts then remove a shortcircuit across resistor R6. The potential of the junctions of R6 and R7 rises, and after a time determined by R8, C8 or R9, C9 the left-hand tube T1 or T3 of stages T1, T2 or T3, T4 is fired (if not already conducting). A positive pulse developed at the cathode of a tube thus fired in turn fires tube T7 and operates printout relay 49. The circuit then reverts to its stable state with T8 conducting. Circuits R8, C8 and R9, C9 may be arranged so that the necessary triggering potentials are supplied to the associated counter stages at different times so that a read-out of the stages may be obtained in several fashions. Alternatively a circuit T7, T8, and relay 49 may be provided for each of several groups of stages, the stages in each group being read out successively and at the same time as corresponding stages in the other groups.
Patent GB-1002738-A (GB)
Title: Improvements in or relating to devices, in particular safety devices, responsive to pulses
IPC: G01R23/09
Filed: 1962-06-04
Abstract: 1,002,738. Frequency detectors. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. June 4, 1962 [June 7, 1961], No. 21469/62. Heading H3A. A safety circuit responsive to the frequency of input pulses at V 1  comprises (a) a diode-pump C 1 , D 1 , D 2 , C 3  which tends to charge capacitor C 3  to a negative voltage (curve 2, Fig. 2) substantially proportional to the pulse input frequency n, and (b) a diode pump C 2 , D 3 , D 4 , C 4  which tends to charge the capacitor C 3  over resistor R 1  in the opposite sense to a voltage (curve 1, Fig. 2) which is substantially constant from a very low value of pulse input frequency. The resultant output voltage V 2  (curve 3) across capacitor 3, causes a switching operation when its level exceeds a level shown at 4 i.e. when the pulse input frequency n exceeds a predetermined value P but is less than a larger predetermined value Q. An alarm is given when the output voltage is below the level 4 i.e. when n < P or when n > Q. The device may be used to indicate excessive radio-active radiation, in a liquid level indicator using a radio-active isotope or in a safety device against excessive speed of a motor.
Patent GB-1128554-A (GB)
Title: Processes for the preparation of aliphatic acid esters
IPC: C07C69/66
Filed: 1967-05-09
Abstract: 1,128,554. Aliphatic oxo-esters and nitriles. ROUSSEL-UCLAF. 9 May, 1967 [10 May, 1966], No. 21484/67. Heading C2C. Esters of general formula (wherein R<SP>2</SP> and R<SP>1</SP>, which may be the same or different are each an alkyl group) are prepared by condensing a 1 -nitro-2-R<SP>1</SP>-ethane in an anhydrous medium in the presence of a basic agent with acrylonitrile to form the corresponding 4-nitro-5-R<SP>1</SP>-pentanenitrile which is reacted in the presence of water with an excess of a strong mineral base to form the corresponding 4 - oxo - 5 - R<SP>1</SP> - pentanenitrile which is reacted in the presence of an acid agent with an aliphatic alcohol (ROH) to form the ester. The 4-nitro-5- R<SP>1</SP>-pentane nitrile is not isolated, but converted in situ to the oxo compound. Esters specified are butyl 5-methyl-levulinate (butyl-4-oxohexanoate), and butyl 5-ethyl-, butyl 5-n-propyl- and butyl 5-iso-propyl levulinates. 4-oxo-5-R<SP>1</SP>-pentane nitriles are novel compounds prepared as above.
Patent GB-597551-A (GB)
Title: Improvements relating to road vehicle wheel mountings
IPC: B60G7/04
Filed: 1945-08-22
Abstract: 597,551. Vehicle spring suspensions; rubber buffers. MACBETH, C. Aug. 22, 1945, No. 21505. [Classes 108 (ii) and 108 (iii)] Relates to road-vehicle wheel mountings of the kind in which a member a carrying a stub axle b is pivotally connected at its upper and lower ends with a pair of pivoted arms g, i, one or each of which is constrained by resilient means. According to the invention, a rubber or like stop or cushion o is associated with an extension on the rear end of one or both of the pivoted arms g, i. The rubber stop o may be provided on the chassis m adjacent the extensions of the arms g, i, or it may be mounted on the the extension of one or both arms for cooperation with the adjacent part of the chassis. The pivotal connection between the members a, g, i, may be in the form of ball and socket joints, the balls being held in place by annular cover pieces j. The two arms g, i are pivoted to the chassis m at k, and one of the arms, preferably the upper arm, is constrained by a torsional rubber block n as described in Specifications 451,044 and 493,942.
Patent GB-742132-A (GB)
Title: Improvements in direction-signalling electric flash lights controlled by thermal interrupters
Inventor: VERNHES JEAN MICHEL
IPC: H01H61/06
Filed: 1953-08-04
Abstract: 742,132. Thermal switches. SCINTEX SOC. ANON. Aug. 4, 1953. No. 21514/53. Class 38(5) [Also in Group XXXVIII] A direction-signalling flashlight arrangement comprises a pair of bimetal strips 1, 2 mounted on a conducting support 3 connected to the supply. The strips flex in opposite directions towards each other upon heating but contacts 11, 6 carried thereby are prevented from touching by insulation 5. The contacts 11, 6 co-operate respectively with adjustable screw contacts 12, 7, contact 12 being connected to one arm of a double pole change-over switch 18, and contact 7 to the other arm of the switch through a coil 9 of a magnet 8, the armature of which is constituted by the strip 2. Contacts 19, 21 and 20, 22 of the switch 18 are associated, respectively, with the left and right turn indicators, each indicator comprising a pair of lamps 16, 17 and 10, 13. If, for example, the switch 18 is moved to indicate a left turn, a circuit is completed from 3 through 2, 6, 7, 9 and 21, to light the lamp 16. Strip 2 is heated by the current therein and eventually overcomes the attractive force of the magnet 8 to snap upwards and move contact 11 to engage contact 12. Lamp 16 is thus extinguished and lamp 17 is lit through a circuit comprising strip 1, contacts 11.12 and contact 19. Strip 1 then heats up and eventually contact 11, 12 is broken to extinguish the lamp 17. Both lamps then remain out until the strips cool and contacts 6, 7 reengage to repeat the cycle. In the other position of the change-over switch, lamps 13, 10 are similarly illuminated in succession to indicate a right turn. The flashing times may be caried by adiusting the contacts 7, 12. Specification 685,255 is referred to.
Patent GB-1126262-A (GB)
Title: Screws
Inventor: WAGNER DAVID P
IPC: F16B33/06
Filed: 1966-05-16
Abstract: 1,126,262. Coated screws. ILLINOIS TOOL WORKS Inc. 16 May, 1966 [16 Dec., 1965] ; No. 21577/66. Heading F2H. [Also in Divisions B2 and B3] A screw, e.g. a self-tapping screw, has a shank 22 and a drilling tip 18 formed from a material having a specific gravity exceeding 2À5, and a coating 20 of a material of specific gravity of between 0À9 and 2À5, e.g. epoxy resin or a ceramic. When the screw is used to join a timber 30 to a metal panel 34 the coating forces a clearance hole in the timber, but is stripped from the shank by the panel 34. (For Fig. 3 see next column.)
Patent GB-300679-A (GB)
Title: Improvements in or relating to electro-magnetic devices for use in sound reproducingor recording devices
IPC: H04R11/00
Filed: 1927-08-17
Abstract: 300,679. Columbia Graphophone Co., Ltd., and Mitchell, F. A. Aug. 17,1927. Loud - speakers ; magnetic instruments.-In an electric sound reproducing or recording device an armature A is pivoted on one pole M1 of a magnet and co-operates with the other pole M. The armature is mounted in adjustable ball-bearings B on extensions M2 on the outer pole of a pot electromagnet and co-operates with two extensions K, K1 on the inner pole which are adjusted bv screws K2, K3 and locked in position by nuts U. Audio-frequency coils O, 01 surround the polar extensions and are connected in series or parallel so that the coils are of opposite polarity. The armature is connected to a small or large diaphragm D of conical or other contour and the axis of the pivot is placed in the plane of the diaphragm. The diaphragm is held at its periphery by a resilient mounting comprising rubber gaskets D1, D2 on either side and co-operates with a sound-amplifying horn or sound-directing device, Fig. 13 (not shown). The audio-frequency coils may be located around the armature, Fig. 8 (not shown). The volume of reproduction can be regulated by varying the polarizing current in the field core and is greatest when the rate of change of magnetic flux at the pole extremities with respect to changes in the polarizing current is at its maximum value. According to modifications, the outer pole is in the form of two limbs, Figs. 3 and 4 (not shown); the armature is directly connected to a large diaphragm, Figs. 5 and 6 (not shown); the armature is pivoted on the central poles and vibrates between adjustable extensions on the outer pole, Fig. 7 (not shown). Specifications 264,263, 271,571 : 279,452, [Class 40 (v), Wireless signalling &c.] ; 298,685, and 302,190 are referred to.
Patent GB-763244-A (GB)
Title: Improvements in or relating to water-soluble alkylated methylol melamines
Filed: 1953-08-06
Abstract: Alkylated water-soluble melamine-formaldehyde condensates are made by (a) reacting melamine and formaldehyde (or a formaldehyde generator) in a mixture of water and methanol or ethanol at a pH of 7-12, the mol. ratio of melamine to formaldehyde being from 1 : 1.5 to 1 : 6, the mol. ratio of alcohol to water being from 5 : 1 to 0.5 : 1 and the mol. ratio of alcohol to formaldehyde being from 0.4 : 1 to 5 : 1; and (b) heating the resulting mixture at a pH of 2-6.9.  After step (a) and before step (b), further alcohol may be added to bring the mol. ratio of alcohol to water from 1 : 1 to 10 : 1.  Step (a) may be effected in presence of sodium carbonate, sodium acid phosphate, sodium hydroxide or triethanolamine.  Step (b) may be effected in presence of oxalic acid, hydrochloric acid, formic acid, stannic chloride, phosphoric acid, pyrophosphoric acid, nitric acid, phthalic acid or maleic acid.  At the end of step (b) th resulting syrup is made alkaline and may be concentrated to remove water and unreacted alcohol.
Patent GB-639528-A (GB)
Title: Improvements in or relating to infant chairs
IPC: A47D15/00
Filed: 1948-08-17
Abstract: 639,528. Nursery chairs. WYATT, E. H: Aug. 17, 1948, No. 21744. [Class 52 (ii)] In a nursery chair the tray is so constructed that its base is movable relatively to its frame to enable the frame and base to be completely cleaned. As shown the base 5 of the tray is slidable in and fits within grooves 6, 7 in the rim members 2, 3, 4 of the tray frame, the base being provided with a depending flange 8 to act as a finger grip, the flange 8 being flush with the rim 4 when the base 5 is in its position-ofuse. A latch 9 is provided.
Patent GB-1015705-A (GB)
Title: A structural layered material for facing interior or exterior walls
IPC: D06N7/00
Filed: 1962-06-06
Abstract: 1,015,705. Wall coverings. E. HORBACH. June 6, 1962, No. 21859/62. Heading E1V. [Also in Division B5] Layered material for facing walls comprises cellular, spongy or foamed plastics 1, bonded to intermediate layer 2 of a fabric web especially glass fibre or plastics, and a final coating 3 of paint, varnish or plaster. The latter two layers may be flameproof.
Patent GB-1152205-A (GB)
Title: Improvements in or relating to a Combine Harvester
IPC: A01D41/12
Filed: 1966-07-27
Abstract: 1,152,205. Combine harvesters. TEXAS INDUSTRIES Inc. 27 July, 1966 [9 Aug., 1965; 27 Oct., 1965], No. 21888/68. Divided out of 1,152,204. Heading A1F. The subject matter of this application is identical with Specification 1,152,204. The claims relate to the adjustment of the reel.
Patent GB-1043786-A (GB)
Title: Dehydration of food products
Inventor: TAYLOR KENNETH WILLIAM
IPC: A23P30/32
Filed: 1964-05-27
Abstract: 1,043,786. Puffing and drying foodstuffs. UNILEVER Ltd. May 25, 1965 [May 27, 1964], No. 21891/64. Headings A2B and A2D. Foodstuffs are dehydrated and puffed by heating at super-atmospheric pressure and then rapidly releasing them to atmospheric pressure in a sectored rotary valve. The valve comprises a rotor 1 carrying sealing strips 8, a stator 2 insulated with a jacket 7, steam inlet pipes 9, 12, a steam outlet pipe 11, a pressure gauge 14, and filling and puffing stations 3, 6 respectively. The jacket 7 may be heated. In use diced apples or carrots, for example, are introduced into sector a of the rotor 1 and progressively transported by rotation of the rotor 1 to sector b where they are preheated by steam, to sector c where they are superheated by superheated steam under pressure and finally to d where they are abruptly released to atmospheric pressure and are puffed, partly dried and discharged at the station 6. The foodstuffs are preferably further dried, e.g. by air drying, after puffing.
Patent GB-531651-A (GB)
Title: Improvements in fire proofing
IPC: D06M13/292
Filed: 1939-07-28
Abstract: 531,651. De-lustring artificial silk. TAYLOR, W. I., OLPIN, H. C., and HOUSE, K. R. July 28, 1939, No. 21952. [Class 2 (ii)] [Also in Group VIII] Textile materials having a basis of an organic derivative of cellulose are fire-proofed and possibly de-lustred by treatment with an aqueous dispersion of a halogenated phosphoric acid ester. Suitable esters are tri- (monochlorethyl) phosphate, tri- (monochlorbutyl) phosphate, the corresponding bromo esters and phosphoric acid aryl and aralkyl esters halogenated in the nucleus. The cellulose derivatives may be cellulose acetate, propionate, butyrate, acetate-propionate, acetate-butyrate and nitro-cellulose-acetate, and ethyl and benzyl cellulose. Suitable conditions for the treatment are 3 to 5 hours at 75-80‹C. Examples describe the use of aqueous dispersions containing a sulphation product of oleyl alcohol and pine oil, with or without a dyestuff, and dispersions containing soap and Turkey red oil in which the yarn is simultaneously de-lustred. The fireproofed yarn, especially of heavy denier (5,000 or more), may be used in the pile of rugs and carpets. The process is especially applicable to voluminous yarns made for example by crimping by rollers or twisting first in one direction and then in the opposite direction or by the process described in Specification 459,781, in which the hot aqueous treatment may be the fire-proofing treatment. The Provisional Specification describes the use of tributyl, tricresyl, triphenyl, triethyl glycol and ethyl glycol dicresyl phosphates and dispersions in non-aqueous media such as petroleum hydrocarbons. Specification 460,575 also is referred to.
Patent GB-710712-A (GB)
Title: Improvements in or relating to the comminution of sylvinite ores
IPC: C01D3/08
Filed: 1951-09-19
Abstract: Sylvinite ore is heated in a rotary kiln or electric furnace to a temperature above 180 DEG C. but below its fusion point (i.e. up to 500 DEG C.) to unlock the potash constituents, and the potassium-containing constituents are then recovered from the heat-treated ore as by heavy media classification or tabling.  The ore may be a langbeinite-sylvinite mixed ore of at least +4 mesh size, the heat-treated ore may be screened into several sized fractions before classification, and for the latter carbon-tetrachloride, ethylene dibromide or bromoform may be used as a heavy liquid.
Patent GB-1186934-A (GB)
Title: High Silica Crystalline Zeolites and process for their preparation
IPC: B01J20/18
Filed: 1967-05-11
Abstract: 1,186,934. Catalytic cracking. ESSO RESEARCH & ENG. CO. 11 May, 1967 [25 May, 1966], No. 21978/67. Heading C5E. [Also in Division C1] The activity and selectivity exhibited by crystalline aluminosilicate zeolite molecular sieves in the catalytic cracking of oil is improved by increasing the SiO 2 /Al 2 O 3  mole ratio in the crystal while maintaining or enhancing the degree of crystallinity. The process comprises (1) ion exchange of the zeolite e.g. faujasite to prepare the H<SP>+</SP> or NH 4 <SP>+</SP>form (2) heat treatment of the zeolite in the critical presence of water at 1000 F for 16 hour; (3) steaming at 12000 F. for 16: hours; (4) leaching of the extraneous alumina from the product by treating with a. dilute mineral acid or an organic chelating agent e.g. ethylenediamine tetracetic acid selective for alumina. A faujasite treated as above. was compared with a standard catalyst of 5% regular H-faujasite in the same matrix and after. the same steam deactivation in a test for cracking oil. The higher activity shown by the treated catalyst is believed to be due to the better stability arising from the higher SiO 2 /Al 2 O 3  mole ratio of this catalyst. The improved selectivity of the treated catalyst is evidenced by the lower carbon make and higher yield of the gasoline fraction compared to that using the untreated catalyst.
Patent GB-1215439-A (GB)
Title: Biopsy probe
IPC: A61B17/28
Filed: 1969-04-30
Abstract: 1,215,439. Biopsy probe. RICHARD WOLF G.m.b.H. 30 April, 1969 [16 May, 1968], No. 21987/69. Heading A5R. A biopsy probe comprises a tubular shaft 1 having at one end a cutter head 8 including a cutter 11 and at the other end means for operating the cutter the portion of the shaft adjacent the cutter head being flexible la, the remainder of the shaft being rigid and of greater length than the said flexible portion. Preferably the flexible portion is 10-30 per cent of the length of the shaft, the rigid portion at the other end being attached to a handle 4 of forceps 3. The cutter head 8 comprises housing 9 with aperture 15, tubular cutter 11 with cutting edge 12, and cap 13 with ventilating hole 14. The cutter is attached to flexible connecting rod 2 by reinforcing sleeve 2a, and the cutting head 8 is screwed to threaded connector 10 which is soldered to the flexible portion 1a of the shaft. The other end of connecting rod 2 is connected to the second handle 6 of forceps 3. A vacuum may be applied at 17 to draw tissue into aperture 15, and the connecting rod may be immobilised by knurled headed screw 16, to ensure that the severed sample does not drop out of the head.
Patent GB-649668-A (GB)
Title: Process for making biguanide derivatives
IPC: C07C279/26
Filed: 1948-08-20
Abstract: Biguanide derivatives of the general formula <FORM:0649668/IV (b)/1> (wherein R represents a lower alkyl radical of 2-7 carbon atoms, and of X, Y and Z one is Cl, Br or I and the others may be H, Cl, Br, I or lower alkyl radicals of 1-4 carbon atoms) are manufactured by treating a dithiobiuret of the general formula <FORM:0649668/IV (b)/2> or an S-monoalkyl derivative of a tautomeric form thereof, with ammonia, preferably in the presence of a desulphurizing agent (e.g. an oxide or salt of a heavy metal such as lead, copper, silver or mercury).  The reaction may be effected by stirring and/or heating the reagents together, conveniently in the presence of a solvent or diluent (e.g. methanol, ethanol or b -ethoxyethanol).  Examples describe the use of the following starting materials : 1-m-and -p-chloro-, -p-bromo-, -p-iodo- and -31 : 41-dichloro - phenyl - 5 - isopropyldithiobiurets, 1-p-chlorophenyl-5-ethyl-, -n-propyl- and n-butyl-dithiobiurets, the corresponding 4-ethyl-4-isodithiobiurets, and 1-p-chlorophenyl-2-ethyl-5-isopropyl - 2 - isodithiobiuret. Specification 603,069 is referred to.  1 - Aryl - 5 - alkyldithiobiurets of the second general formula above are obtainable by thiohydrolysis of the corresponding 4-alkyl-4-isodithiobiurets. In an example, sodium is dissolved in excess of ethyl alcohol, hydrogen sulphide is passed in, and the resulting solution is refluxed with 1-p-chlorophenyl-4-ethyl-5-iso-propyl-4-isodithiobiuret in alcohol while passing hydrogen sulphide, to produce 1-p-chlorophenyl-5-isopropyldithiobiuret.  Others of the starting materials specified above are prepared analogously.  1 - Aryl - 5 - alkyl - 4 - alkyl - 4 - isodithio-biurets are obtainable by interaction of an arylisothiocyanate with an N-alkyl-S-alkylisothiourea.  In an example, N-isopropyl-S-ethylisothiourea hydrobromide is stirred with p-chlorophenylisothiocyanate and aqueous caustic potash to produce 1-p-chlorophenyl-5-isopropyl-4-ethyl-4-isodithiobiuret.  Others of the starting materials specified above are prepared analogously.  1 - Aryl - 5 - alkyl - 2 - alkyl - 2 - isodithiobiurets are obtainable by alkylation of 1-aryl-5-alkyldithiobiurets.  In an example, 1-p-chlorophenyl-5-isopropyldithiobiuret is allowed to stand with ethyl iodide and aqueous alcoholic ammonia, producing 1-p-chlorophenyl-5-isopropyl-2-ethyl-2-isodithiobiuret.