baber/WOPTO huggingface dataset:
Patent GB-1298156-A (GB)
Title: Process for the manufacture of dialkyl phosphites
Inventor: SCHIMMELSCHMIDT KURT
IPC: C07F9/142
Filed: 1970-03-05
Abstract: 1298156 Preparing dialkyl phosphites FARBWERKE HOECHST AG 5 March 1970 10676/70 Headings C2C and C2P A dialkyl phosphite is obtained by heating under reflux while removing the water formed during the reaction by azeotropic distillation, phosphorous acid and a primary or secondary straight or branched chain alkanol containing at least 4 carbon atoms the alcohol being used in an excess of at least 45% of the stoichiometrical amount, until the amount of acid in the reaction mixture has reached its lowest value. The phosphorous acid is advantageously used in crystallized form although a concentrated aqueous solution of the acid, having a water content of up to 20% can also be used. The alkanols used are preferably C 4 -C 16  alcohols, especially C 4 - C 8  alkanols or mixtures thereof, and an excess of from 70 to 200% of the alkanol is preferably used. The reaction water formed may be separated from the azeotropic mixture with the alkanol, e.g. by means of a water separator, and the recovered alkanol is recycled to the reactor. The reaction is terminated when the amount of acid in the reaction mixture has attained its lowest value, e.g. as measured by titration, e.g. with NaOH, of continuously taken samples. The reaction may be carried out under reduced pressure and/or under an atmosphere of an inert gas, e.g. nitrogen. Small amounts of olefins and ethers may be obtained as byproducts. Examples are given for the production of (1) and (2) di-(2-ethyl-hexyl)-phosphite, (3) di - (n - pentyl) - phosphite, (4) di - (3- methylbutyl)-phosphite, (5) a mixture of dipentyl phosphites from a mixture of 2-methylbutanol-1 and 3-methyl-butanol-(1), (6) di-(nhexyl) - phosphite, (7) di - (4 - methylpentyl- (2) - phosphite, (8) di - (2 - ethylbutyl)- phosphite, (9) di-(n-heptyl)-phosphite, (10) didodecyl phosphite and (11) ditetradecyl phosphite. In a comparative example for the reaction of n-heptanol-(1) with phosphorous acid as above but carried out for a longer period of time and thus at a higher acid value of-the mixture a substantial amount of di-(n-heptyl)-ether is obtained as by-product.
Patent GB-1031718-A (GB)
Title: Visual aids and educational devices
IPC: G09B27/02
Filed: 1962-03-20
Abstract: 1,031,718. Orrerics. J. P. JOHNSON, and G. R. LEVITT. March 11, 1963 [March 20, 1962], No. 10693/62. Heading G5G. An orrery comprises a globe 3 mounted on a shaft 5 for rotation about its geographical axis 4 which is inclined at 23¢ degrees with respect to a second axis 6 passing through the globe and shaft 5, which is mounted freely in one end of an arm 1 and carrying a sprocket wheel 10 coupled by an endless chain 12 to a second fixed sprocket wheel 11 so that when the arm 1 is moved with the globe 3 in an orbit around a third axis 9 the globe completes one revolution about the second axis 6. One complete orbit of the arm 1 around the axis 9 represents one gear and various angular positions along the orbit may be identified in terms of months by a calibrated disc 16 secured to the shaft 5 and which is concealed in a cover 17 having a window 18 so that only the appropriate month is exposed to view. A source of light 14 passing through the axis 9 is mounted on the arm 1 and arranged to throw a horizontal beam of light 15 towards the centre 8 of the globe. A suitable drive may be provided for driving the arm 1 around the third axis 9 and a further drive may be taken from this for rotating the globe around the geometrical axis. A space, representing the moon, may be mounted for rotation in an orbit about the globe.
Patent GB-309195-A (GB)
Title: Process for the stabilisation and preservation of inulin in vegetable material
IPC: C08B37/00
Filed: 1929-04-06
Abstract: 309,195. Schering-Kahlbaum Akt.- Ges. April 7, 1928, [Convention date]. Extracting sugar.-The Specification as open to inspection under Sect. 91 (3) (a) describes the stabilization and preservation of sugar containing materials, e.g. sugar-beet to render possible a recovery and working up of the raw material at any desired time for the production of sugar by treating the starting material in the form of a paste with an agent which prevents fermentation without being narcotic. Such agents include carbon monoxide, hydrogen cyanide and fluorine compounds. Thus, for example, into the paste carbon monoxide, preferably under slight excess pressure, or hydrogen cyanide is passed, or a cyanogen salt such as potassium cyanide may be added to the paste to give a concentration of 0.01 per cent of hydrogen cyanide under the action of the acid cell juice. Sodium fluoride in a concentration of a 0.1 per cent may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-566703-A (GB)
Title: Improvements in or relating to variable electric condensers
IPC: H01G5/06
Filed: 1943-07-01
Abstract: 566,703. Variable condensers. MULLARD RADIO VALVE CO., Ltd., and MAITLAND, C. E. July 1, 1943, No. 10714. [Class 37] A plate of a variable condenser has a series of frangible members around its edge to permit of exact capacity matching. In the example, a series of holes 3 and narrower slots 5 give rise to lines of incipient fracture 4, at which small parts 6 may be broken off.
Patent GB-107680-A (GB)
Title: Improvements in and relating to Combined Starter and Lighting Dynamos.
IPC: H02K23/52
Filed: 1916-07-28
Abstract: 107,680. Midgley, A. H., and Vandervell & Co., C. A. July 28, 1916. Lighting systems; starting prime movers, dynamo - electric machines with control circuits for.- In an engine-starting and electriclighting system for a motor vehicle, the dynamo-electric machine has two brushes e, h of the same polarity one of which c is lifted from the commutator when the machine is generating, the battery being then connected through the reverse current cut-out g. When motoring, the brush e rests on the commutator and the cut-out g is not in circuit. The shunt field is connected across an intermediate brush i and the main brush d. In a modification, the reverse-current cut-out is connected to a point between the series field and the battery. As applied to a two-pole machine, the two brushes of the same polarity are placed side by side.
Patent GB-635453-A (GB)
Title: Improvements in or relating to baby carriers
IPC: A47D13/02
Filed: 1948-04-19
Abstract: 635,453. Baby, carriers ; hammocks. FOIN, (nee CHABAUDON), M. M. April 19, 1948, No. 10760. Convention date, April 22, 1947. [Class 52 (ii)] A baby carrier comprises a flexible bag with a double lower sheet comprising a mattress, an upper sheet or cover having a longitudinal opening to permit the placing of the baby within the carrier and having a closure such as a sliding fastener 5 and side panels 6 provided with handles 9. The panels 6 may be formed with pockets for clothing &c. and be so shaped that when the baby is carried the lower sheet is curved so as to raise the baby's head to appropriate position. The mattress may comprise small cushions contained in pockets formed in the double lower sheet. Loops &c. 10 may be provided so that the carrier may be hung like a hammock.
Patent GB-1303861-A (GB)
IPC: H01L23/045
Filed: 1970-03-06
Abstract: 1303861 Semi-conductor device mountings ROBERT BOSCH GmbH 6 March 1970 [8 March 1969] 10807/70 Heading H1K Two semi-conductor wafers 36, 38 are mounted on a common header 35 so illustrated in Fig. 1, though pin K4 and the associated contact elements 10, 11 are optional. As described the two wafers contain integrated sub-circuits which together constitute a voltage regulator circuit for a generator (Fig. 4, not shown) similar to that described in Specification 1,167,840. Prior to assembly the contact areas of the wafers are tinned, or wafers of solder are disposed between contacting areas during assembly. The various parts are assembled, together with the corresponding parts of other similar devices, in a three-part composite jig as is described in detail with reference to Figs. 5, 6, 8 and 9 (not shown). Contact wires 10, 11 instead of extending as shown from a common coil spring W4 may extend from separate springs (Figs. 3c and 3d, not shown). To prevent canting of wafer 36 during assembly due to the clearance necessary between the collar on mounting platform 60 and connection pin K2, the part of the platform containing the collar is inclined at 7 degrees to the part carrying the wafer. When assembled in the jig springs W3, W4 are pushed down with a gauge or if suitably dimensioned pressed into contact with the glass beads around the pins to ensure electrical contact at points 7, 13, 14 and are of such material (a specified copper-silver alloy) that they remain resilient at 375 C., the temperature used in the single pass soldering step used to make all the solder connections. All contacts to the semi-conductor wafer are made with a lead tin alloy, while the solder rings used to fix the springs and mounting platform to pins K2-K4 are of specified lead-tin, lead-tin-silver or tinsilver-bismuth alloys.
Patent GB-591180-A (GB)
Title: Improvements relating to tubular chair frames
IPC: A47C5/06
Filed: 1945-04-30
Abstract: 591,180. Tubular chair frames. PEL, Ltd., and REYNOLDS, W. H. April 30, 1945, No. 10877. [Class 52 (ii)] A tubular chair frame comprises separable parts which have interengageable spigot and socket ends such as will permit open hems or loops on the ends of canvas or like seat and/or back rest to be slipped over the frame members. The front legs b are connected to a transverse rail e attached to the back legs a by spigots f and similarly the back h is spigotted into the back leg extensions d. Feet connect the lower ends of the legs a, b and the seat rail c is disconnected from the socket f to slip the hem j' of the seat on to the rail, where it may be secured by the screws, cotter pins or rivets g. The top rail h is detached in a similar manner and the open hems k' of the back rest slipped on to the back leg extensions d A seat or back rest only may be attached to the chair in the above manner.
Patent GB-1100332-A (GB)
Title: Improvements in or relating to filter elements
Inventor: BROOKS JOHN SPURGEON
IPC: B01D46/10
Filed: 1964-03-14
Abstract: 1,100,332. Air filter. EVANS, ADLARD & CO. Ltd. 12 March, 1965 [14 March, 1964], No. 10911/64. Heading BIT. [Also in Division B5] A respiratory filter element comprises a layer of felted glass fibres 3 deposited on a porous former 1 of foamed polyurethane, having rows of blind holes in one side to extend the filtering surface. In manufacture, a web of foamed polyurethane is passed through a phenolic resin bath and a curing oven to rigidity the polyurethane web, which is then cut into square slabs. A slab is placed in a tray (16) which is indexed between guides (17) under laterally reciprocating cutters (29) (Figs. 6-9, not shown). The cutters are mounted on a slide (28) which is reciprocated by the rotating chuck (35) of a drilling machine, and are moved downwards, cutting a row of rectangular holes in the slab (14), at each position of the slab. The slide (28) may carry more than one row of cutters (29), possibly enough to cut all the holes in one operation. The machined slab is cut to circular form and an acid slurry is passed through, depositing a layer of glass fibres of 0.05 to 3 microns diameter thereon. The former is then sealed in a peripheral flange 4, possibly with a non-rigidified polyurethane foamed protecting layer 6 over the fibrous layer. Instead of rectangular the blind holes may be circular, or the holes may be replaced by concentric corrugations.
Patent GB-200897-A (GB)
Title: Improvements relating to measuregraph machines for measuring lengths of material
IPC: G01B5/04
Filed: 1922-04-19
Abstract: 200,897. Copsey, W. A. B. April 19, 1922. Mesuring.-To prevent over-running of the measuring-roller of a cloth-measuring machine when the end of the material is pulled through, the usual pivoted drop-arm 1, 2 which is normally supported by the cloth operates through a spring-controlled link 3 upon one end 7 of a pawl 16 to raise the other end of the pawl into engagement with ratchet teeth 11 on the roller A. The pawl 16 is carried by a fulcrum-block 9 pivoted at 10 to the base of the machine and connected by a spring 14 with a pivoted brakeblock 13 which acts on the roller A to prevent shock when the teeth 11 engage the pawl 16.
Patent GB-263665-A (GB)
Title: Improvements in mechanism arranged to operate at predetermined times
IPC: G04C23/34
Filed: 1926-04-26
Abstract: 263,665. General Electric Co., Ltd., Turner, H. C., and Sherwin, A. April 26,1926. Clockwork actuation.-A disc P rotated anticlockwise by clockwork carries tappets m<1>, N for closing and opening a switch constituted by a bridge B and mercury cups R, R<1>. When tappet m<1>engages a trigger lever C, the latter is turned about its pivot S and strains a spring c<1>, and when the tappet rides over the end thereof it returns and overshoots the dead centre position of the spring and knocks a trip lever G pivoted at g<1> clear of a stop a' on the switch arm A. This arm then turns about its pivot S to the closed position. Subsequently the tappet N engages a setting lever D and turns it against the action of a spring d<1> till a pawl K, Fig. 2, stiffly pivoted thereto contacts with a stop e<2> and is turned anti-clockwise to such a position that it will engage a shoulder a<2> on the arm A when the lever D on disengagement from the tappet N returns to its normal position. The arm A is thereby returned to the " off " position and again retained by the trip lever G, the pawl K being removed from engagement with the shoulder a<2> by contacting with a stop E during the final part of the return movement of the lever D. Another tappet i<1> on the disc P contacts once in each revolution with a seven toothed star wheel H, one of the teeth of which carries a roller h<2>. Thus on one day of the week the roller h<2> engages and moves the trip lever G before the trigger lever is operated and thus the switch is closed early. Another tooth of the wheel H carries a roller h<1>, which on another day of the weak contacts with a locking lever F and moves its end into engagement with the stop a<1> before the trigger lever is operated and thus prevents the switch from closing on this day.
Patent GB-274226-A (GB)
Title: A new method for the preparation of indanthrone-disulphonic acids and indanthrone
IPC: C09B5/48
Filed: 1926-04-26
Abstract: 274,226. British Dyestuffs Corporation, Ltd., Shepherds on, A., and Hailwood, A. J. April 26, 1926. 1-Hydroxylaminoanthraquinone - 8 - sulphonic acid; aminohydroxyanthraquinone sulphonic acids; indanthrone; indanthrone disulphonic acid. - 1-Nitroanthraquinone-8-sulphonic acid is reduced in neutral or alkaline solution with less reducing agent than is necessary for reduction to the amino compound. The product, which is probably 1 - hydroxylaminoanthraquinone - 8 - sulphonic acid, yields an indanthronedisulphonic acid on heating with alkali. The sulphonic groups can be split off from the latter, for example, by electrolytic reduction in a divided cell according to the method described in Specification 273,043, [Class 41, Electrolysis]; since the disulphonic acid first becomes reduced to the leuco compound, the latter may be prepared by reduction with hydrosulphite prior to the electrolytic reduction. According to examples the 1- nitroanthraquinone-8-sulphonic acid is reduced with sodium sulphide, zinc dust and ammonium chloride, or glucose; the 1-hydroxylaminoanthraquinone-8-sulphonic acid so obtained yields aminohydroxyanthraquinonesulphonic acid d (1 : 2 : 8 or 1 : 4 : 8 or a mixture of both) by treatment with concentrated sulphuric acid, and an indanthronedisulphonic acid by heating with caustic alkali; the latter dyes cotton from the vat in fugitive shades and wool from an acid bath. In a further example, the indanthronedisulphonic acid dissolved in alkaline hydrosulphite solution is subjected to electrolytic reduction in a divided cell using a mercury cathode, an iron anode, and a caustic soda anolyte; the product is a solution of leuco-indanthrone which yields indanthrone on oxidation.
Patent GB-959556-A (GB)
Title: Cold welding arrangements
Inventor: FULLER DENNIS QUINTRELL
IPC: B23K20/02
Filed: 1960-03-29
Abstract: 959,556. Welding by pressure. PYE Ltd. March 20, 1961 [March 29, 1960], No. 11039/60. Heading B3R. In cold pressure welding a relatively thin cylindrical cover member having a peripheral flange to a relatively thick base member by the free flow of metal of both members, an annular ridge is formed on the relatively thick base member to the end surface of which the flange is cold welded, the shape and cross-section of the ridge being such that during cold welding the same flow-pressure conditions are achieved as apply to cold welding two sheets of comparable thickness to the flange. The relatively thick base-plate 1 for a semi-conductor device is provided with two annular grooves 2 spaced apart to form an annular ridge 3 and a flange 5 on a cylindrical cover 4 is cold welded to the ridge by a punch 6, The grooves preferably do not extend beyond half way through the base. The ridge may be upstanding from the thicker member and may be positioned at or spaced inwardly from the edge thereof.
Patent GB-331011-A (GB)
Title: Improvements in or relating to cooling towers
IPC: F28F25/00
Filed: 1929-04-10
Abstract: 331,011. Film Cooling Towers (1925), Ltd., and Scott, W. A. April 10, 1929. Posts. - The masts of upright posts of cooling-towers are formed with their lower portions adjacent the irrigation work of material such as concrete impervious to water, the upper portions being of different material, perferably wood. The lower portion A may be of concrete having reinforcement bars B extended downwards for uniting the reinforcement of the usual concrete pond at the lower base. The wooden upper part C may have a spigot C<1> fitting into a socket moulded in the end of the concrete part, and the joint may be completed by straps D or by a sleeve. Holes for bolting the braces of the tower may be moulded in the concrette part.
Patent GB-819811-A (GB)
Title: Chimney cowls
Inventor: NYST ALFRED
IPC: F23L17/02
Filed: 1956-04-12
Abstract: 819,811. Chimney cowls. SHUNT, S.A. April 10, 1957 [April 12, 1956], No. 11127/56. Class 25 A cowl formed of superimposed, vertically-spaced rings disposed beneath a cap is characterized in that the cros-sections of the rings are bounded on the outside of the cowl by arcs 14, 17, 21, 31, Figs. 2 ... 6.
Patent GB-493268-A (GB)
Title: Improvements in or relating to machines for the fatigue testing of materials by bending
IPC: G01N3/34
Filed: 1938-04-12
Abstract: 493,268. Testing fatigue of materials. BOSCH GES., R., (formerly BOSCH AKT.- GES., R.). April 12, 1938, No. 11130. Convention date, April 12, 1937. [Class 106 (ii)] In a mchine for testing by reciprocating bending, one end of the test piece is secured to the free end of an oscillating lever of which the axis crosses the axis of the unloaded test piece at right-angles while the other end of the test piece is secured to the free ends of two parallel plate springs. A bar 6 supported at the ends by plate springs 5 is reciprocated by a connecting rod 7 from a pulley 18 driven by a motor 3. One end of the rod 7 is hinged to the bar and the other is adjustable in a slot across the pulley to vary the stroke of the bar 6. The motor is also adjustable bodily. An element 10 is secured to a rail 2 by a clamp 8 and screw 9. Pivoting about a pin in the member 10 is a lever 12 one arm of which has a pin-and-slot connection 16 with the bar 6 while the other carries a clamp for one end of the specimen 27, the clamp bolt 30 passing through a hole in the specimen. The other end of the specimen is similarly clamped to a block 25 carried by the free ends of parallel leaf springs 22, 20 secured to the element 10. When the bar 6 is reciprocated, the lever 12 is oscillated and the specimen bent. The device may accommodate more than one specimen as shown. For measuring the degree of bending a gauge as shown in Fig. 6 is used. A member 31 having two spaced knife edges 32 has pivoted to it a lever 34 which grips the specimen 27 between the knife edges. The plunger of a dial gauge 36 engages the lever 34 and measures the sag of the specimen.
Patent GB-461401-A (GB)
Title: Improvements in and relating to eye-glass frames with nose side supports
IPC: G02C5/12
Filed: 1936-04-18
Abstract: 461,401. Spectacles &c. GAMMERT, G. R. H. P., (trading as MULLER & SOHNE, F., [Firm of]). April 18, 1936, No. 11177. Convention date, Jan. 10. [Class 97 (i)] In spectacles &c. having plaquets which are resiliently connected to the frame, the connection for each plaquet consists of a number of helical springs which preferably lie one within another. As shown in Fig. 4, the connection comprises a spring 18, one end of which is soldered to the plaquet 1, while the other end is inserted in a socket 19 carried by the arm 11. The mouth 20 of the socket mav be constricted to grip the spring without preventing removal. The socket may have an aperture at its inner end through which the end of the spring is passed, the projecting end of the spring being bent over and secured to the socket by soldering &c. The spring is of the form shown in Fig. 3, comprising two helices 15, 16, one within the other.
Patent GB-596877-A (GB)
Title: Improvements in or relating to circuit arrangements for suppressing the carrier in amodulated carrier wave
IPC: H03C1/52
Filed: 1945-05-03
Abstract: 596,877. Modulating systems. SPERRY GYROSCOPE CO., Inc. May 3, 1945, No. 11299. Convention date, May 3, 1944. [Class 40 (v)] [Also in Group XXXV] A modulated carrier wave is relieved of its carrier component by applying it to two branched channels which are ultimately recombined in an output circuit, one channel including an amplitude-levelling valve and a variable-gain amplifier, the other including a phase-shifting network. The gain of the variable amplifier being automatically adjusted so that the pure carrier is balanced out at the output. The modulated carrier applied at terminals 11 feeds two channels 12, 13, the channel 12 including an amplifier 17 giving a gain which varies inversely with its input voltage, thus levelling the wave amplitude. After passing reversed limiters 18, 19, the wave is fed through a link circuit 22 and a tuned amplifier 15 to terminals 24 at which pure carrier may be taken off. The pure carrier is also fed to a combining coil 33. The other channel 13 includes an amplifier 26 and a phase-shifting network 27 which feeds carrier and side-bands into the coil 33 in such phase that the two carrier feeds are in opposition and tend to cancel out. Any residual carrier is detected by the balanced modulator 34, the valves 35, 36 being fed in push-pull from the coil 33 and in parallel from the link circuit 22. Any residual carrier present in the coil 33 gives an unbalanced D.C. voltage in the anode circuits of the valves 35, 36 which is used as automatic gain control bias for the amplifier 15 and causes a balance of pure carrier in the coil 33, so that pure side-bands are available at the terminals 32. The A.G.C. bias derived from the balanced modulator may be applied in opposite senses to the valves 15, 26 (Fig. 2, not shown).