baber/WOPTO huggingface dataset:
Patent GB-374724-A (GB)
Title: Improvements relating to drive chains
IPC: F16G13/06
Filed: 1931-09-17
Abstract: 374,724. Driving chains. MORSE CHAIN CO., Ithaca, New York, U.S.A.- (Assignees of Perry, D. B. ; Ithaca, New York, U.S.A.) Sept. 17, 1931, No. 26067. Convention date, June 19. [Class 24.] In open-link driving chains, the joints are formed by a pin 18, Fig. 2, secured to the outer link plates and a bushing 19 secured to the inner plates, the pin having a cylindrical bearing in the bushing and the opposite surfaces 18a, 19a of the pin and bushing being concentric and cylindrical for engagement with the teeth of the sprocket either directly or through a loose sleeve or roller. Preferably the pins and bushings are oppositely disposed at alternate joints for the purpose of causing the articulation to take place under conditions of no load and minimizing the wear on the sprocket teeth. In the multi-strand chain described, the pins 18 are secured to the outer plates 11, 13, Fig. 3, either by a force fit or riveting. Two pairs of inner plates 14, 16 and 12, 16 are spaced by the bushings 19 and are disposed on opposite sides of the double link plates 15. The inner plates register with notches 24 on the pins and the apertures are formed to provide the clearance necessary for articulation.
Patent GB-468995-A (GB)
Title: Method of generating saw-tooth oscillations
IPC: H03K4/12
Filed: 1936-09-25
Abstract: 468,995. Valve generating circuits. MICHAELIS, E. Sept. 25, 1936, No. 26074. Convention date, Sept. 26, 1935. [Class 40 (v)] Saw-tooth oscillations are produced by charging two condensers 8, 9, Fig. 2, in series through a resistance 7 and discharging them through a hard valve 6 which has one of the condensers 9 in its grid circuit. Synchronizing pulses may be applied to the grid through a transformer 4. In a modification, Fig. 3, the main condenser 8 is shunted by a pair of condensers 9, 10 separated by a divided resistance 11, 12, the junction of the latter being connected to the grid circuit.
Patent GB-794566-A (GB)
Title: Improvements in the production of tea concentrates
Inventor: PERECH RAMON
IPC: A23F3/16
Filed: 1954-09-09
Abstract: A black tea concentrate is made by cutting or otherwise finely-dividing fresh or treated green tea leaves and then either oxidizing the particles by exposure to atmospheric oxygen until dark brown and extracting the water-soluble constituents, either with boiling water or steam, or by extracting the soluble constituents by percolation and adding a minute quantity of an inorganic oxidizing substance to the solution and then maintaining the solution produced either way in the open air at or near the boiling-point of water for up to six hours.  This causes polymerization of the polyphenol and catechol constituents.  The oxidizing substance may be potassium permanganate and preferably 0.03 to 0.06 per cent of the dry weight of the tea extract is used.  After oxidation and polymerization excess water is eliminated and a concentrated liquid, paste, powder or the like is produced.  According to Example 1, 20 lbs. of finely-divided tea leaves are heated in water to extract the water-soluble constituents, the exhausted leaves are removed from the solution and 0.06 per cent by dry weight of potassium permanganate is added to the solution which is maintained at 90 DEG C. until oxidation is complete.  In Example 2 the tea leaves are exposed to the oxygen of the air for up to two hours before extraction.  After extraction, the exhausted leaves are removed from the solution which is then maintained at a constant temperature between 80 DEG  and 90 DEG C. in the open air for up to four hours.  In Example 3 the tea leaves are reduced to a semi-fluid mass in a colloidal mill and then treated similarly to those in Example 1.  Example 4 is similar to Example 1 and in Example 5 black tea is used with 0.02 per cent of potassium permanganate as catalyst.
Patent GB-1332046-A (GB)
Title: Printing cylinders
IPC: B41C1/14
Filed: 1971-04-19
Abstract: 1332046 Screen stencils G COLOMBO E MALSERVIGI and A BOZZONE 19 April 1971 [4 April 1970] 26114/71 Heading B6C A hollow screen printing cylinder 1 comprises a tubular screen supporting means of a textile material the yarns of which are coated all over with a metal deposit. The warp and weft of the material may be regular or inclined with respect to the cylinder axis as shown in Fig. 1. Each yarn 10, which may be of a natural or synthetic fibre, may have deposited thereon a layer of copper 13<SP>1</SP> followed by a layer of nickel 13<SP>11</SP>, Fig. 7. Instead of nickel chromium or bronze may be used.
Patent GB-640663-A (GB)
Title: Improvements in or relating to resistance welding machines
IPC: B23K11/24
Filed: 1947-09-26
Abstract: 640,663. Control systems for resistance welding. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 26, 1947, No. 26143. Convention date, Oct. 24, 1946. [Class 38 (iv)] A spot welding machine is associated with control means responsive to the thickness of the work and which so adjust the weld timer that the welding time is automaticallyvariedwith the work thickness, preferably in accordance with a formula which is included in the Specification. The "hold" time may similarly be controlled. In the system shown, a welding transformer 21 is supplied over back-to-back ignitrons 29, the firing tubes 31 of which are controlled in dependence upon the presence or absence of current flow through a resistor 41 in the anode-cathode circuit of a control valve 43, the conductivity of which is determined by a timing circuit comprising tubes 101, 103, capacitors 127, 129 and resistors 118-125. The last are connected to the normally separated leaf contacts 139-147 of a switch 137 having a member 149 actuated by movement of electrode 3 into engagement with the work 7, the member thus causing engagement of a progressively increasing number of the contacts ( and consequent reduction of the time setting of the timer) as progressively thinner work is to be welded.
Patent GB-909826-A (GB)
Title: Improvements in photographic colour processes
Inventor: JEFFREYS ROY ARTHUR
IPC: G03C7/30
Filed: 1958-01-30
Abstract: 909,826. Colour photography. KODAK Ltd. Jan. 28, 1959 [Jan. 30, 1958], No. 26218/62. Divided out of 909,824. Class 98 (2). The stability of colour developed dye images in a water-permeable binder layer is improved by treating them after removal of silver and unused silver halide and washing out of all soluble salts with a bath containing an aliphatic amino acid for a time sufficient to allow the layer to absorb a substantial quantity of the compound and drying it while still containing such substantial quantity. 10% solutions of glycine and glycylglycine, and a 7.5% solution of N-hydroxymethyl glycine are exemplified for the purpose and similar compounds are listed.
Patent GB-399645-A (GB)
Title: Improvements in electric signalling systems
IPC: F41G3/14
Filed: 1932-09-21
Abstract: 399,645. Electric signalling systems. SCHNEIDER ET CIE, 42, Rue d'Anjou, Paris. Sept. 21, 1932, No. 26278. Convention date, Dec. 19, 1931. [Class 40 (i).] In a signalling system wherein potentiometer resistances are used at the transmitter and receiver and wherein the resistance arm at the receiver is adjusted into a position corresponding to that of the transmitter by the aid of a null reading voltmeter connected in a bridge wire, the arms 4, 4<1> of the transmitter and receiver respectively carry contacts 5, 6, 5<1>, 6<1> arranged to contact with diametrically opposed points of the potentiometer and connected through slip-rings 7, 8, 71, 8<1> to the contacts of electromagnetically operated change-over switches 14, 14<1> interconnected by the line wire 20 containing the voltmeter 19. The switches 14, 14<1> are operated into engagement with the contacts 11, 11<1> by a switch 18 on the shaft of the transmitter potentiometer 2 and are retracted by springs 15, 15<1> into engagement with contacts 12, 12<1> when the circuit of switch 18 is opened, and the arrangement is such that the brushes co-operating with the upper semicircular arc of the resistances are connected to the line wire. A supplementary signal comprising a variable voltage derived from a directcurrent generator 21 may be superposed on the line wire 20. An alternating current generator 22 is also connected in the line circuit and produces a small oscillation of the voltmeter pointer to provide a check on the condition of the line circuit.
Patent GB-442898-A (GB)
Title: Apparatus for inspecting the interiors of tanks and like containers
IPC: G02B23/24
Filed: 1934-09-14
Abstract: 442,898. Optical inspectionapparatus. GOSLING, A. C., 86, Sycamore Road, Smethwick, Birmingham. Sept. 14, 1934, No. 26412. [Class 97 (i)] Apparatus to be inserted in a tank &c. for inspecting the interior consists of two parallel tubes 1, 2 of which the tube 2 extends at each end bevond the tube 1. The tube 1 has at its upper end outside the tank a light source 5, and at its lower end within the tank a reflector 6 and lens 7 for illuminating the interior of the tank.. The tube 2 has at its lower end an opening 10 and reflector 9 facing the illuminated area of the tank, and at its upper end an eyepiece by which the said area is observed. The length of the tubes and the inclination of the reflectors may be adjustable.
Patent GB-653438-A (GB)
Title: Improvements in or relating to linkage arrangements for coupling a plough or other soil penetrating device to a tractor
IPC: A01B59/06
Filed: 1947-10-01
Abstract: 653,438. Agricultural implement. FORD MOTOR CO., Ltd., and WRIGHT, S. J. Oct. 1, 1947, No. 26524. [Class 6(i)] An arrangement for coupling a plough 5 to a tractor 1 comprises two upper links 9 and a lower link 8 disposed substantially in line with the resultant forces on the plough. As shown the lower link 8 is in two parts 20, 20<SP>1</SP> joined by an adjusting sleeve 21, the link 8 being pivoted to a bracket 13 which is transversely adjustable by means of a screw having a handle 17, the screw being mounted on pivoted links 15 which are vertically adjustable by a screw 18, The upper links are attached to a crank 24 rotatably adjustable by means of a worm wheel 25 mounted thereon which co-operates with a worm having a handle 28. The plough is lifted from the ground by hydaulic lift arms 31 connected to the upper links 9 by links 22.
Patent GB-742284-A (GB)
Title: Improvements in absorption, stripping, distillation and like columns
Inventor: SWEETEN JOHN LANGHORNE
IPC: B01D3/18
Filed: 1953-09-28
Abstract: 742,284. Distillation and like columns. METAL PROPELLERS, Ltd. Sept. 14, 1954 [Sept. 28, 1953], No. 26627/53. Class 55 (2). A bubble tray for distillation and like columns 10 comprises a number of closely spaced parallel tubes 11 between which liquid trickles downwardly and a gas flows upwardly into a layer of liquid supported by the tray, the tubes having provision for their internal heating or cooling. The tubes may have electrical or gas heating means or as shown be connected to headers 14 for the circulation therethrough of a fluid heating or cooling medium. The tubes may be circular or polygonal and the column may be of circular or rectangular section. In the case of a circular column the space between the tube assembly and the walls of the column is occupied by plates 13 and the tubes are supported by transverse members 12. In a distillation column trays whose size decreases progressively, either individually or in groups, from top to bottom of the column may be used. In a modification two headers 14 are provided at each side of the tray one above the other and alternate tubes are connected to different headers, those tubes connected to the upper header having their ends bent upwardly to make the connection. Specification 618,029 is referred to.
Patent GB-1094018-A (GB)
Title: Power system control
IPC: F16D48/02
Filed: 1966-06-15
Abstract: 1,094,018. Change-speed and clutch control. TWIN DISC CLUTCH CO. June 15, 1966 [July 19, 1965], No. 26654/66. Heading F2L.  The control system described in Specification 1,094,017 is modified by providing an adjustable stop 136 for the servo piston 124 of the main modulated clutch control valve 118 so that the closed position of this valve can be adjusted to ensure that the man clutch servo chamber 30 and supply lines are maintained full of liquid at low pressure when the clutch is disengaged. As in Specification 1,094,017, movement of the gear selector lever 85 to the right along any of the drive ratio selection slots adjusts the valve 118 to gradually increase clutch engagement, and a pedal operated valve 106 in series with the valve 118 decreases clutch engagement in accordance with the pedal depression. A valve 145, sensitive to flow to the ratio establishing clutches, inhibits engagement of the main clutch until the selected ratio clutch is fully engaged.
Patent GB-441716-A (GB)
Title: Improved manufacture of nitrocellulose lacquers
IPC: C09D101/18
Filed: 1934-09-18
Abstract: In a manufacture of clear-drying nitrocellulose lacquers a commercial ester-soluble collodion cotton of any degree of viscosity and having a nitrogen content of 11,5--12,0 per cent is dissolved in a solvent consisting of an anhydrous mixture of absolute alcohol and an aromatic hydrocarbon the alcohol content of the solvent varying between 50 and 95 per cent.  Preferably the lacquer contains equal parts by weight of absolute alcohol and benzene, and the collodion cotton advantageously has a nitrogen content of 11,8--11,9 per cent. A small proportion of a "true" solvent, e.g. butyl acetate, not exceeding 4 per cent may be added.  The lacquer may also contain a softener and/or a resin, and also, if desired a pigment or a soluble dyestuff.  A lacquer known under the Registered Trade Mark "Zapon" has the following composition:--7,5 per cent ester-soluble nitrocotton (11,62 per cent N) of high viscosity moistened with butyl or ethyl alcohol to the extent of 35 per cent; 91,5 per cent of a 1 : 1 mixture of absolute alcohol and benzene, and 1 per cent of dibutyl phthalate.  A dipper lacquer contains 13,5 per cent of ester-soluble nitro cotton (N=11,8 per cent) of low viscosity moistened with butyl or ethyl alchol to the extent of 35 per cent together with either 2,5 per cent tricresyl phosphate, 81,0 per cent of 1 : 1 absolute alchol-benzene mixture and 3,0 per cent butyl acetate or 2,5 per cent dibutyl phthalate, 82,0 per cent of 1 : 1 absolute alcohol-benzene mixture and 2,0 per cent of ethylglycolacetate.  A third example of a dipping lacquer is given in the Specification.  The Specification as open to inspection under Sect. 91 comprises an example of a lacquer in which the alcohol exceeds 95 per cent of the alcohol-benzene mixture.  It also states that the small proportion of true solvent is added in substitution for an equal proportion of benzene.  This subject-matter does not appear in the Specification as accepted.
Patent GB-238751-A (GB)
Title: Improvements in and relating to wash rags
IPC: A47K7/02
Filed: 1924-11-10
Abstract: 238,751. Elwell, J. T. Nov. 10, 1924. Pads and like rubbing appliances.- A wash cloth comprises an elongated body 1, preferably of turkish towelling or similar rough material, formed at one end with a relatively short pocket 4 and provided with transverse elastic straps 5. In a modified construction the device is of double thickness, the cloth being folded longitudinally and stitched along one side and one end to form a pocket into which the arm of the user may be inserted.
Patent GB-226914-A (GB)
Title: Improvements in or relating to devices or appliances for the purpose of recreation and amusement
IPC: A63G7/00
Filed: 1924-07-28
Abstract: 226,914. Dixon, W. B. July 28, 1924. Amusement apparatus for carrying passengers comprises a boat and means whereby pitching and rolling motions are imparted to the boat. The boat a is supported by a chassis d which may run on rails, as shown, or it may be mounted on road wheels or on wheels connected by an endless belt track when the device is to be used on a beach. Alternatively, the boat may be carried by a motor truck or a stationary framework. The boat is pivoted at its ends to a cradle c which is secured to an upright f that is pivoted to the chassis. The upright e is connected by a link r with an eccentric, or with a crank pin on a gear wheel, driven by the wheels of the chassis, so that the cradle is rocked as the device travels and a pitching motion is imparted to the boat. When the device is stationary, the cradle is rocked by a suitable motor. Two pillars u, secured to the chassis, engage the boat as it pitches and thusi impart to it a rolling motion.
Patent GB-206826-A (GB)
IPC: B60T15/42
Filed: 1923-10-27
Abstract: 206,826. Bozic, D. Nov. 7, 1922, [Convention date]. Fluid-pressure.-An accelerator for use with compressed-air brakes, which comes into action only during emergency braking, comprises in one form, Fig. 1, a piston 74 located between chambers 73, 75, the chamber 73 being in constant communication with the train pipe by passages 72, 71, 8 and communication between the two chambers being controlled by a valve 80, which is carried in the hollow stem 76 of the piston 74 and is normally balanced by train pipe pressure in the chamber 82 acting on the underside of a piston carried by the stem 81. A valve 77 on the stem 76 normallv closes the outlet 78 to atmosphere or to the brake cylinder. During normal running, the chamber 75 is charged with air at train pipe pressure from the chamber 73 by leakage through the valve 80, and during slow reductions of train pipe pressure leakage through this valve is sufficiently rapid to keep the piston 74 in equilibrium, but a. rapid reduction of pressure results in an excess of pressure in the chamber 75, whereby the piston 74 is forced upwardly and the valve 77 is opened to vent the train pipe. When the upward movement of the piston is arrested by a stop, the valve 80 opens by its inertia and the pressure in the chambers 73, 75 equalize, when the piston 74 falls under the action of the spring 70 to close the outlet 77, and the valve 80 also closes. In the modification shown in Fig. 2 the valve 800 is integral with the stem of the piston 74, so that it opens and closes simultaneously with the valve 77, and the under chamber is connected with the upper by the valve 800 and passage 840, 820 and with the passage 71 through the ports 830.
Patent GB-973256-A (GB)
Title: Resistance thermometers
IPC: G01K7/18
Filed: 1962-07-13
Abstract: 973,256. Resistance thermometers. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT VORMALS ROESSLER. July 13, 1962 [July 18, 1961], No. 27026/62. Heading H1K. The base metal wire of a resistance thermometer is protected by the application of a thin layer of a silver-palladium alloy. In a preferred form a silver-palladium alloy tube is drawn over a nickel core and the assembly drawn down to the desired size. This method gives accurate control over both alloy composition and coating thickness-silver-palladium cannot be applied so accurately by electrodeposition or spraying. Suitable alloys range from 70% Ag: 30% Pd to 30% Ag: 70% Pd with a preferred composition of 40% Ag: 60% Pd. In resistance thermometers of the invention an intermediate layer may be provided between the base metal wire and the silverpalladium coating to prevent interdiffusion of the components at high temperatures. The material used should be a high melting metal with a low degree of diffusion into the neighbouring metals.
Patent GB-249766-A (GB)
Title: Starting arrangement for internal combustion engines
IPC: F02N99/00
Filed: 1925-10-29
Abstract: 249,766. Viet, P. Sept. 3, 1925, [Convention date]. Starting.-Combustible mixture for starting an engine is supplied from an auxiliary internal-combustion engine through a valve-controlled passage during the compression period of the auxiliary engine. As shown in Fig. 1, an auxiliary four-stroke engine 1 is provided with cam-actuated inlet and exhaust valves 2, 3 and a cam-actuated valve 4 opened during part of the compression stroke to admit mixture past a spring-loaded valve 7 to a pipe 10 leading to the engine to be started. A two-stroke engine with or without pump cylinders may alternatively be used. The mixture from the engine 1 may be enriched by connecting the pipe 10 at 14, Fig. 2, to a,n auxiliary carburettor 12 having a spraying-nozzle 15 in the outlet 16. A cock 13 between the carburettors 11, 12 can be opened when charging with fuel. In a further modification, Fig. 3, the auxiliary carburettor 18 has nozzles 20, 21. part of the mixture, passing around the nozzle 20 and through the nozzle 21, and part passing through a spring-loaded valve 22 and around the nozzle 21. A cock corresponding to 13, Fig. 2, serves to connect the two carburettors to a filling pipe 25, or to connect the upper part of the carburettor 18 to the atmosphere through a passage 26.
Patent GB-826801-A (GB)
Title: Recovery of sucrose esters
Inventor: THOMPSON BERNARD HAMMOND MARKH
IPC: C07H13/06
Filed: 1957-08-29
Abstract: Esters of sucrose with aliphatic monocarboxylic acids are recovered from crude reaction mixtures containing such esters by removing at least 90% by weight of the reaction solvent, then contacting the remaining crude reaction mixture with water and a partially watermiscible ketone solvent or ester solvent to form an aqueous phase and a solvent phase, whereby the sucrose ester is extracted into the solvent phase, separating the solvent phase and recovering the sucrose ester therefrom.  The process is preferably used to recover mono- and di-esters of sucrose and aliphatic acids containing at least 8 carbon atoms.  The initial esterification suitably employs a solvent of relatively high boiling point such as dimethylformamide and the removal of at least 90% by weight of the solvent is preferably effected by distillation under reduced pressure.  Suitable ketones are aliphatic and cycloaliphatic ketones containing up to 8 carbon atoms per molecule, methyl isobutyl ketone being preferred. Suitable esters are those containing at least 6 carbon atoms and derived from an aliphatic carboxylic acid and an aliphatic monohydric alcohol.  The amount of water and ketone or ester solvent is suitably about twice the volume of the reaction mixture.  The extraction may be effected at 40 DEG  to 80 DEG C. and preferably while maintaining a neutral or slightly acid r H, e.g. 4-7, if necessary by adding acidic substances.  The extraction may be carried out batchwise or continuously using a counter-current procedure.  Preferably the solvent phase containing the sucrose ester is further contacted with water to form two phases, to remove the last traces of reaction solvent and sucrose into the aqueous phase.  In a countercurrent system the outgoing solvent phase encounters a feed of fresh water shortly before leaving the system.  The ester may be recovered from the solvent phase by distilling off the ketone or ester in the presence of water, leaving a solution or slurry of product which may be spray dried or drum dried.  Alternatively, the water present in the solvent phase may be distilled as an azeotrope with the solvent using a decanting-type still head which continuously returns the solvent phase to the still.  The ester may then be recovered by distillation of the solvent or by concentration and crystallization of the sucrose ester.  Examples describe the preparation of sucrose esters by reacting sucrose with an alkyl ester of an aliphatic acid in dimethylformamide at elevated temperature in the presence of potassium carbonate as catalyst, and the recovery of the sucrose esters as described above.