baber/WOPTO huggingface dataset:
Patent GB-377198-A (GB)
Title: Improvements in mechanical stokers
IPC: F23K3/14
Filed: 1931-04-20
Abstract: 377,198. Mechanical stokers. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Combustionee-, Inc. ; 1200, East Madison Street, Goshen, Indiana, U.S.A.) April 20, 1931, No. 11616. [Class 51 (i).] A mechanical stoker, particularlv of the under-feed type, comprises a hopper 15, which opens laterally into a conveyer duct 13 containing a screw conveyer 16, the entrance to the duct being enlarged at 24, such enlargement being covered by a removable closure 23, 25, the duct 13 being secured to the hopper by a bracket &c. 22 located oppositely to the enlarged aperture 24. A deflector 26 may be fitted and the driving means for the screw may include a shear-pin 21. In the event of clogging of the screw, the pin 21 will shear and the obstruction may be removed through the aperture 24 by removal of the closure 23, 25.
Patent GB-276921-A (GB)
Title: Improvements in chromium plating machines
IPC: C25D19/00
Filed: 1927-05-02
Abstract: 276,921. Eaton, W. S. May 2, 1927. Cells; electrodes; chromium, depositing; metals, pickling; metals, removing; electrolytes, heating and ccoling. - Apparatus for chromium plating, particularly of printing plates, and subsidiary operations comprises a tank 13 for removing former coatings, a cleaning tank 13 and plating tanks 11, 12 supported on angle irons forming part of a rectangular framework; the space above the tanks is enclosed, the housing being provided with vent pipes 32, 33 connected to an exhaust fan 34 for the removal of fumes, and a hinged door 22 opening downwards. The tanks 11, 12 are separated from the tanks 10, 13 by an insulating partition 25. The tanks are of metal and are insulated from their supports and from one another. The front and sides of the tanks are provided with linings 10<a> - - 13<a> of glass or other insulating material, the exposed back surface forming an auxiliary anode in the plating tanks and a main electrode in the other tanks. The main plating anodes 30 are supported by a bus-bar 29. A work-supporting bus-bar 31 extends along all the tanks. The tanks may be initially heated by gas-burners 37; to prevent over-heating due to electrolyte action, the plating tanks may be cooled by a fan (not shown), mounted on a shelf at the side of the frame. The apparatus is supplied with current by a motor-generator 38 provided with an input switch 40, output switch 41, and a double-pole change-over switch 44, one pole 45 of which is connected to the bus-bar 29 and the tanks 10, 13 and the outer pole 46 to the busbar 31. For cleaning, the work is connected as cathode and for stripping as anode. The cleaning solution is alkaline and the plating solution of chromic acid and an alkali. The plating temperature is 110-130‹ F., the voltage 5-10, and the current density 1-2 amps. per sq. in.
Patent GB-551950-A (GB)
Title: Improvements in or relating to the treatment of paper
IPC: D21H17/36
Filed: 1941-09-15
Abstract: 551,950. Synthetic resins. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E. I. ) Sept. 15, 1941, No. 11773. [Class 2 (iii)] [Also in Group VIII] Paper for printing, wrapping &c. or tissue paper, or cardboard, e.g. of multiple layers of the same or different fibre composition for boxes &c. is given high wet strength (and resistance to grease &c.) by applying a polyvinyl alcohol and a water-soluble, N-methylol, nitrogen-containing compound preferably in aqueous solution and of pH above 5.5 and heating the treated paper to cause an insolubilizing reaction between the polyvinyl alcohol and the N-methylol compound. The reaction is carried out in the presence of an acid, e.g. hydrochloric acid or of an ammonium salt, e.g. ammonium chloride, bromide, nitrate, sulphate, sulphite, persulphate, or phosphate. In addition to the methylol compound specified in the example, e.g. methylol melamine, dimethylol biuret, dimethylol ammonium sulphamate, dimethylol thiourea, or methylol adipamide, there may be added other substances containing methylol group made by reacting formaldehyde, paraformaldehyde, or trioxane &c. with amines or amides, e.g. by neutralizing the acidity of the formaldehyde solution, neutralizing the reactive nitrogen-containing compound, if strongly alkaline, and mixing the reactants in molar ratios in concentrated aqueous solutions at elevated temperature. The reaction may be stopped by dilution with cold water and the product may be used directly, before the dilution stage, or after drying at low temperature. The reaction product and the polyvinyl alcohol may be applied to one or both surfaces of the paper &c. together with a pigment e.g., clay, chalk or satin white and a softener, e.g. formamide, ethanol, ethanol acetamide, glycerol, glycols, invert sugar, sodium lactate or fatty alcohol sulphate, and anti-foaming substances may be used, the preferred pH range of the pigmented compositions being 6.1 to 11.5. The proportion of pigment may be 100 parts to 3 to 15 parts of polyvinyl alcohol. The paper may be made from slightly or highly bleached or unbleached sulphate, sulphite, soda, or ground wood, or cotton rag, linen rag, flax, ramie, jute, straw, pineapple, musa textiles or banana fibre, and may contain mineral fillers, e.g. clay, sizes, waxes, &c. Specification 502,724, [Group VIII], is referred to.
Patent GB-586969-A (GB)
Title: Improvements relating to springs of spring-mattresses and other upholstery
IPC: A47C23/053
Filed: 1944-06-21
Abstract: 586,969. Spring upholstery. PARGETER, J. June 21, 1944, No. 11774. [Class 52 (iv)] Resilient means for coupling together coil springs and other springs of spring upholstery or coupling such springs to other metallic parts comprise rubber links or strips bonded at their ends to the parts which they join. Fig. 1 shows the top coils of spring A connected by rubber links B that part of the steel spring A at which bonding is to take place being first coated with copper or a copper alloy. In Fig. 6 the rubber link B is strengthened by a wire E wholly embedded in the rubber. The reinforcing metal wire may be in the form of a closed loop link or be replaced by a metal strip which in the case of a four-way link is bent from a cruciform blank.
Patent GB-1063778-A (GB)
Title: Winding machine
IPC: B65H63/036
Filed: 1964-03-20
Abstract: A winding machine of the kind in which the take-up spool is brought into contact with a braking roller when the yarn being wound breaks or becomes exhausted, is characterized in that the braking roller is provided with a friction clutch, the frictional force of which produces a brake moment smaller than that resulting from the surface friction between the bobbin and the said roller.  On exhaustion or breakage of yarn, a feeler (5), Fig. 1 (not shown) causes contacts (6, 7) to close and energize motor (9) to turn cam (12) through one revolution.  The resulting movement of the cam follower (13a) causes arms (13b) and (15) to move the wound package (4) first from its driving roll (3) on to a roller (16) braked by one or more friction clutches, and secondly on to a reverse rotation roller (18). Regulating clutch strength in accordance with package diameter. The roller (16) may be a hollow tube (20), Fig. 2 (not shown), braked at its ends by abutments (22, 23) biased against the tube (20) by a spring (24).  As the package (4) increases in diameteer it pivots arm (15) upwardly to move a flexible thrust element (26a) through a tube 26 to rock a double armed lever (28a, 28b) in a manner increasing the compressive force in the spring (24). Thus, as the package (4) increases in diameter, the friction clutches increase their braking effect.
Patent GB-610887-A (GB)
Title: Improvements relating to electric terminal connections
IPC: H01R4/30
Filed: 1946-04-17
Abstract: 610,887. Binding-posts. CHLORIDE ELECTRICAL STORAGE CO., Ltd., GRAY, R., and SEDDON, J. April 17, 1946, No. 11883. [Class 38 (i)] A heavy-current terminal comprises plates a, b mounted on a clamping screw e and moved towards each other by a spring washer g, a slotted connecting tongue j being removably inserted and clamped between the plates, which are provided with cable sockets c having abutments to limit the movement of the plates towards each other. A socket k in the tongue j receives an external cable and the top of the terminal is provided with a cover n which in a modification (Figs. 6 to 8, not shown) is shaped to receive the handle of the tongue. The terminal may comprise more than one pair of plates.
Patent GB-752493-A (GB)
Title: Improvements in or relating to vehicles having a gas turbine prime mover
IPC: B60L7/22
Filed: 1954-04-26
Abstract: 752,493. Gas turbine plant. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. April 26, 1954 [April 30, 1953], No. 11939/54. Class 110(3) [Also in Groups XXVII, XXXI and XXXV] In a locomotive (see Group XXXI), having a gas turbine 3 driving wheels 1 through an electrical transmission, dynamic braking of the locomotive is obtained by cutting off or reducing the fuel (but not the air) to the turbine. The turbine 3 comprises an air compressor 5, combustion chambers 6 provided with fuel nozzles 8, 9 and a power turbine 7. a shaft 11 and an extension 11<SP>1</SP> thereof connected to a main generator G, an exciter E and an auxiliary power generator GX. The nozzles 8, 9 are supplied with heavy or light oil from tanks 27, 28 by pumps 4<SP>1</SP>, 22<SP>1</SP>, a valve V7, another pump 10<SP>1</SP>, a heater 38 supplied with steam, and valves V1, V2, the pumps 4<SP>1</SP>, 22<SP>1</SP> being provided with return relief valves 32, 34 and pump 10<SP>1</SP> being provided with a valve VG controlling fuel output. The valve VG is controlled through pneumatic master controller MC and balanced by the output pressure of an oil pump 26 driven by the turbine 7. Steam to the heater is controlled through a valve VH, the valve being effected by pressure in a pipe 46' connected to the high pressure side of the compressor 5 and by a thermally responsive valve VT. The nozzles 8, 9 are provided with shut-down valves V20, V2I which are closed when the turbine speed reaches 2000 R.P.M. by means of the output of the pump 26. When open the valves V20, V21. allow the fuel to drain back to the tanks 27, 28 through a three-way valve V8. The valves V7, V8 are operated in synchronism by the pressure in the pipe 46, the arrangement being such that the turbine is started on light oil and changed over to heavy oil at 5300 to 6000 R.P.M. To facilitate initial combustion, the combustion chambers 6 are provided with spark plug points 91 (see Group XXVII) which are mounted on a piston 92 and urged into the chambers by a spring 93. The piston 92 is driven out against stops 101 by gaesous pressure. Air is supplied to the back of the spring 93 through a relay-controlled valve VA to urge the points 91 into the chamber when combustion is required to be started after a period of dynamic braking (i.e. when the compressor pressure is high). To increase normal dynamic braking (i.e. driving the turbine without fuel) vanes 87 provided at the outlet of the turbine 7 are operated through a relay by a manually operated switch 88 and a brake controller BC. which may be operated conjointly with or separately from the controller MC, the controller BC effecting reduction of the fuel supply from the idling speed of the turbine and conjoint increase in the exciter field excitation of the electrical transmission to-give an approximately constant brake power during reduction of fuel supply to the turbine.
Patent GB-513922-A (GB)
Title: Improvements relating to electric relays
IPC: H01H53/10
Filed: 1938-04-21
Abstract: 513.922. Actuation of switches. GRAY, J., and METROPOLITAN-VICKERS ELECTRICAL CO.. Ltd. April 21, 1938, No. 12026. [Class 38(v)] Relates to motor-operated switches for signalling and other purposes wherein rotation of a motor in one or other direction moves a switch member from a central to one or other of two extreme positions, weight or spring mechanism returning the contact member to its central position when the motor is deenergized. According to the invention the motor shaft 43 is connected to the switch member through a lost-motion device and a light frictional coupling which serves to absorb the momentum of the motor after the contact member has returned to its central position and thus prevents undesired movement of the contact member beyond the central position. There may also be a heavy frictional coupling which allows the motor to turn after the contactmember has reached an extreme position. In the form shown, the motor shaft 43 carries a pin 44, Fig. 4, adapted to engage and drive an arm 45 fixed to a sleeve 48 connected by a light friction coupling consisting of washers 51, 52, to the shaft 43 and by a heavy friction coupling to pinion 47 that gears with a sector 28 and mounted on a shaft 25 and controlled by weights 30 so as to tend to take up a central position. Movement of the sector 28 from this central position raises or lowers an arm 22 which moves contacts 6 or 7 into engagement with fixed contacts 4 or 5.
Patent GB-332284-A (GB)
Title: Improvements in electrical transmission systems
IPC: H04J1/00
Filed: 1929-04-18
Abstract: 332,284. Western Electric Co., Md., (Bell Telephone Laboratories, Inc.). April 18, 1929. Television; duplex and multiplex signalling. - In television or highspeed copying-telegraphy the frequency ranges between the groups of frequencies constituting the picture signals are used for transmitting synchronizing, telegraphic, or other signals. The picture signals contain frequency bands around the linescanning frequency and its harmonics and with a width of about' 20 per cent of the line-scanning frequency, and the auxiliary signals are transmitted on frequencies approximately mid-way between the frequency bands of the picture signals. At the transmitter, Fig. 8, picture signals amplified from a. photo-electric cell 30, synchronizing current from an alternating current generator 23, and carrier-current telegraphic currents, from a key 120 are transmitted to a line 100 through a filter 90 (Figs. 10 and 11, not shown) which passes incoming telegraphic signals to a receiver 130. At the receiver, Fig. 9, the picture signals are transmitted to a lamp 270, the synchronizing signals to a motor 243 synchronized as described in Specification 292,597, and the telegraphic signals to a receiver 230, through a filter 210 (Figs. 12 and 13, not shown). Outgoing carriercurrent telegraphic signals are produced by a key 220.
Patent GB-701093-A (GB)
Title: Manufacture of cyclic alcohols and esters thereof
IPC: C07C67/08
Filed: 1949-05-06
Abstract: A process for the preparation of cyclic alcohols comprises heating an alcohol selected from isopropyl alcohol and secondary butyl alcohol in the liquid phase and in the presence of an alkali metal hydroxide or an alkali metal alcoholate to a temperature in excess of 150 DEG C. and separating from the reaction mixture the cyclic alcohol produced.  1:1:3-Trimethylcyclohexanol-5 and a substituted cyclohexanol of formula C12H24O, respectively, are the cyclic alcohols produced, and as by products are obtained methyl isobutyl carbinol and an octyl alcohol respectively.  The products are separated by fractional distillation.  Potassium hydroxide, e.g. in amount 1 to 10 per cent., is a suitable condensing agent.  To form an alkali metal alcoholate, the alcohol starting material may be mixed with an alkali metal hydroxide and the mixture dehydrated by distillation in the presence of benzene.  The preferred reaction temperature is 250 DEG  to 300 DEG C.  As a solvent which may be present during the condensation, there may be used a hydrocarbon. When isopropyl alcohol is condensed, methyl isobutyl alcohol is a suitable diluent, and may be recycled after isolation from the reaction products.  The reaction is preferably carried out in metal vessels, e.g. of steel, stainless steel or nickel and with finely divided metal, e.g. copper bronze as catalyst.  Preferably more than 20 per cent. of the initial alcohol is condensed.  In examples (1) and (5) isopropyl alcohol is heated at 290 DEG C. with potassium hydroxide in an autoclave; (2) to (4) isopropyl alcohol, potassium hydroxide and benzene are dehydrated by ternary distillation.  The solution, in which more than half the potassium hydroxide has been converted to potassium isopropylate is passed continuously through a stainless steel tube at 80 atmospheres.  A table shows the percentage conversion and yields of 1:1:3-trimethyl-cyclohexanol-5 and methyl isobutyl carbinol when working at 250 DEG , 274 DEG  and 296 DEG C.; (9) secondary butyl alcohol is heated at 250 DEG C. with potassium hydroxide to yield an octyl alcohol and a substituted cyclohexanol C12H24O; (10) secondary butyl alcohol containing potassium secondary butylate is passed continuously through a heated tube at 264 DEG -266 DEG C. at 80 lbs./sq. inch.  The products may be converted to esters by heating with a carboxylic in the presence of a mineral acid. Example (1) describe the preparation of 1:1:3-trimethyl-cyclohexyl acetate by heating the alcohol with acetic anhydride.  The di(1:1:3-trimethyl-cyclohexyl) esters of sebacic, adipic and phthalic acids are prepared in further examples by heating 1:1:3-trimethyl cyclohexanol and sulphuric acid with the appropriate acid while distilling off water azeotropically. Specification 701,098 is referred to.
Patent GB-400631-A (GB)
Title: Improvements in or relating to the manufacture of artificial straw, ribbons and likeproducts
IPC: B27K9/00
Filed: 1932-04-27
Abstract: Artificial straw, ribbons, or like products of flattened cross-section, produced by coalescing a number of yarns or filaments as described in Specifications 328,312, [Class 2 (ii), Cellulose &c.], 354,233, 368,738, and 371,428 or otherwise, are subjected to severe bending so that they are split lengthwise to form a number of finer straws associated together.  Splitting may be effected after the straw is fully set after coalescing or while it is in a slightly solvent-softened condition.  The material to be coalesced may be in the form of twisted or untwisted fine filaments of, say, 2 to 25 denier, and the filaments may be in the form of artificial bristles of, say, 50 to 1000 denier or more, or may be in the form of artificial straw.  Thermoplastic derivatives of cellulose may be employed and may be cellulose acetate or other derivatives, examples of which are given in Specification 354,233, and any suitable coalescing liquid of the required solvent or restricted solvent power may be used, examples of which are given in the same Specification. The splitting process may be effected continuously with the coalescing process, and excess solvent is preferably driven off by drying the straw as it emerges from the coalescing apparatus.  If the split straws are required to be closely associated the straw may be severely twisted by apparatus such as ring, flyer, or cap spinning-apparatus, or if close association is not desired and a substantially twistless product is desired the straw may be passed through a tortuous path, for example through a fine slot and then immediately through another at right-angles.  Ornamental effects, such as are produced by differential colour effects or differential lustre may be obtained by associating yarns of non-thermoplastic material with yarns of thermoplastic material, and metallized effects may be produced by similarly associating fine metal bands, such as are used in making tinsel, or metallized yarns or threads as described in Specification 354,233. Colouring, either continuous or intermittent, may be effected by applying dyestuff, which may be in the form of a solution as described in Specification 313,451, [Class 2 (ii), Cellulose &c.], while the filaments are passing through the pressure rollers or at any other suitable stage in the manufacture. Lustrous, metallic or opaque effects or waterproof properties may be imparted by treating the material as described in Specifications 328,312 and 354,233.
Patent GB-474148-A (GB)
Title: Improvements in desiccators
IPC: B01L1/02
Filed: 1937-04-28
Abstract: 474,148. Desiccators. GLASFABRIK SOPHIENHUTTE R. BOCK GES. April 28, 1937, No. 12165. Convention date, July 14, 1936. [Class 34 (i)] A desiccator which may be a vacuum desiccator, as shown comprises a cover a, an upper cylindrical part b merging int( a lower spherical part e with a flat reduced base f, a ledge being formed to support a porcelain plate d. The ledge c adjoins the lower part e at a right or obtuse angle.
Patent GB-1389845-A (GB)
Title: Relay compensator valve
IPC: B60T8/50
Filed: 1972-03-16
Abstract: 1389845 Antiskid braking systems EATON CORP 16 March 1972 [17 March 1971] 12239/72 Heading F2F A pressure modulating valve 30 for use in an antiskid braking system allows a rapid exhaust rate from a brake cylinder 14, when a skid is detected by a sensor 40, and an initially rapid rise in pressure to a level lower than the previous maximum pressure and a second stage rise in pressure at a substantially lower rate on brake reapplication. On operation of a treadle operated valve 24 air passes from an air reservoir 22 to a control chamber 52 via passages 72, 74 an open three-way solenoid valve 50 and a passage 76. During normal braking valve 30 acts as a relay and with valve 50 open the pressure in chamber 52 acts downwardly via a diaphragm 44 on a primary piston 78 causing a seal 88 to be unseated from a lip 90 allowing air to pass from the reservoir 22 to a chamber 54 via chamber 56, and then to the brake cylinder 14. As pressure builds up in chamber 54 the differential pressure across diaphragm 44 is equalized and a spring 93 causes piston 78 to move upwardly and re-seat seal 88. The brake pressure therefore rises in stages as valve 24 is progressively opened. Antiskid operation.-During brake application if the brake pressure overshoots that required for wheel lock wheel lock sensor 40 transmits a signal to solenoid valve 50 which closes communication between reservoir 22 and chamber 52 and opens the latter to exhaust. Pressure in chamber 54 forces diaphragm 44 apart from piston 78 allowing air to be discharged through orifices in a disc portion 86 of piston 78 and via passage 76 to exhaust. The pressure in a chamber 58 is also discharged through passage 102, an orifice and check valve assembly 48 comprising a washer 104 having an orifice 106, passage 100 and chamber 54. A pressure imbalance across a disc portion 97 of a secondary piston 80 is thereby created as pressure continues to build up in a chamber 60 through orifice 116 and passage 118 causing secondary piston 80 to move upwardly so that seal 88 is seated. The wheel then commences to reaccelerate and the solenoid valve 50 is released thereby reapplying brake pressure very rapidly. The pressure in chamber 54 then causes piston 78 to move upwardly and seat seal 88. The next stage of brake pressure rise occurs at a substantially slower rate since the bleeding of pressure into chamber 58 through orifice 104 reduces the pressure differential across diaphragm 46 so that the piston 78 is moved downward slightly to allow air to bleed from high pressure chamber 56 through passage 84 into chamber 54 the rate of rise in which is determined by the pressure rise in chamber 58. The brake pressure will thus rise slowly until the skid sensor 40 again detects wheel lock and the valve will be recycled.