baber/WOPTO huggingface dataset:
Patent GB-176660-A (GB)
Title: Improvements in traction wheels
IPC: B60B15/18
Filed: 1921-02-28
Abstract: 176,660. Campodonico, J. J. Feb. 28, 1921. Endless-track vehicles. - Shoes A, provided with lateral track sections 12, 13, are pivoted to the wheel rim and have curved end guides 14, 15 adapted to enter the wheel rim and lock the shoes against lateral movement. The pivotal connection consists of a pair of links 23, preferably adjustable in length, the links of each pair being connected at one end to opposite ends of the shoe and at the other end to spaced points on the rim, the arrangement being such that when the shoes are horizontal the links are parallel. In the application described, the wheel rim consists of three spaced rings 2, 3, 4 connected by the heads of the spokes and by bars 8, preferably integral, and other bars 9 bolted in position. The bars 8 have lugs 21 tapped to take the hooks 22 for the connection of the links. The bars 9 pass through hangers 16 formed integral with the shoes to support them. In the arrangement shown the shoes forming the double track are staggered. The ground surface of the shoes may be provided with grousers.
Patent GB-811899-A (GB)
Title: Process for the preparation of terephthalic acid
IPC: C07C51/41
Filed: 1957-02-28
Abstract: Terephthalic acid is prepared by heating a salt of another mononuclear aromatic carboxylic acid consisting principally of the potassium salt, dissolving the reaction product in water or a water-containing solvent to give a saturated solution of terephthalate, which is then treated with sodium carbonate, sodium hydroxide or a sodium salt of the carboxylic acid which is being re-arranged to precipitate sodium terephthalate.  The sodium terephthalate is then separated and the remaining solution evaporated, if necessary after the addition of fresh carboxylic acid to be rearranged so as to obtain a residue containing the potassium salt of said acid, which is recycled to the heat treatment process. The terephthalic acid is liberated from the separated sodium terephthalate by acidifying with acids stronger than terephthalic. The potassium salts of the following acids are suitable as starting materials, benzoic, phthalic, isophthalic, hemimellitic, trimellitic, trimesic, mellophanic, prehnitic, pyromellitic and mellitic, or mixtures thereof.  The heat treatment may be carried out by heating the salts at 350-450 DEG  C. in the presence of carbon dioxide or carbon dioxide-nitrogen mixtures, in some cases under pressure and preferably in the presence of 0.1 to 10 per cent by weight of, e.g. oxides, carbonates, halides or organic salts of zinc cadmium or divalent iron, especially the salts of those carboxylic acids serving as starting materials.  A suitable water-containing solvent in which to obtain the saturated solution of the potassium terephthalate is methanol.  This operation is preferably carried out at ordinary or increased pressure in the hot, e.g. at boiling temperature. Alternatively the saturated solution may be prepared by making a dilute solution and then concentrating it to saturation point. The saturated solution may then be freed from undissolved residues before addition of the sodium salt or mixture of such salts, preferably in the hot in an amount such that the content of the sodium ions is at least equal to that of the potassium ions present or a little more, e.g. 20 per cent over the calculated amount.  The precipitate of disodium terephthalate is separated, e.g. by filtering or centrifuging, preferably in stages, e.g. by filtering the hot mixture, whilst keeping it at the operating temperature, allowing the filtrate to cool, and filtering off the disodium terephthalate which separates out, and the remaining filtrate is evaporated and recycled. Examples are given.
Patent GB-491662-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H50/60
Filed: 1937-03-06
Abstract: 491,662. Light current relays. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., GRAHAM, J. ST.-C. W., and SHARPE, H. D. March 6, 1937, No. 6718. [Class 38 (v)] As shown in Figs. 1 and 3, the operating electromagnet comprises a pair of coils 6 on a U-shaped core 2 the poles of which are below lateral extensions of an armature 7 consisting of a flat blade of springy magnetic material which is clamped at one end to lie along the length of a supporting member 1. The member 1 may, as shown, be the yoke of a standard telephone relay, one end of which is suitably bent. The armature has contacts on opposite sides adapted to engage corresponding contacts on upper and lower relatively rigid springs 9, 10 in the unoperated end operated positions respectively, backing springs 11, 12 being provided to reinforce the springs 9, 10. The core 2 is mounted on but magnetically insulated from the support 1. To secure rapidity of operation the ratio of inductance to resistance is kept low and a considerable proportion of this resistance is made external to the coils by being wound on a china former 15 attached to the member 1, this arrangement additionally providing adequate cooling facilities for the additional resistance.
Patent GB-1000806-A (GB)
Title: Siloxane co-polymers
IPC: C08G77/24
Filed: 1964-02-18
Abstract: Copolymers having the average general formulae <FORM:1000806/C3/1> and <FORM:1000806/C3/2> wherein each R is a methyl or 3,3,3-trifluoropropyl radical, and a and b have average values such that the ratio of a to b is in the range from 1 : 1 to 12.5 : 1, and having viscosities of from 15 to 350,000 cs. at 25 DEG  C. can be made by equilibrating a mixture of para-bis-(dimethylhydroxysilyl) benzene, at least one cyclic selected from dimethylsiloxane cyclics, bis - (3,3,3 - trifluoropropyl) - siloxane cyclics and (methyl) 3,3,3 - trifluoropropylsiloxane cyclics and a trimethylsilyl-end-blocked dimethylsiloxane liquid of viscosity from 0.65 to 300,000 cs. at 25 DEG  C. at a temperature of from 100 DEG  to 190 DEG  C. for 10 to 35 hours in the presence of an alkaline catalyst, e.g. NaOH, KOH, NH4OH or K-dimethylsilanolate.  In a typical Example (1) a mixture of p-bis-(dimethylhydroxysilyl) benzene, a trimethylsiloxy-end-blocked dimethylsiloxane liquid, dry toluene and KOH, was refluxed for 16 hours at 110 DEG  to 120 DEG  C., after which the catalyst was neutralized with (CH3)3SiCl, the toluene and other volatiles were removed by stripping, and the resulting product was treated with activated charcoal and filtered to yield a liquid having a viscosity of 385.5 cs. at 25 DEG C.  Uses.-As lubricants, dielectric coolants, damping and viscous drive fluids, and as viscosity index improvers for silicate and other hydraulic fluids.
Patent GB-142971-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B25/00
Filed: 1919-03-18
Abstract: 142,971. Tate, W. H., and Scott, B. D. March 18, 1919. Cylinders receiving liquid fuel.-Fuel is sprayed through an inclined nozzle o on to a hot-plate n fixed in an unjacketed part of the detachable cylinder head m and arranged in the combustion chamber k.
Patent GB-765283-A (GB)
Title: Improvements relating to vapor-liquid entrainment separators
IPC: B04C1/00
Filed: 1955-03-08
Abstract: 765,283. Steam separators. CHICAGO BRIDGE & IRON CO. March 8, 1955 [April 27. 1954]. No 6770/55. Class 123(3) A steam separator mounted at the top of an evaporator comprises outer and inner cylindrical, walls 10, 12 between which is an annular space 16 closed at top and bottom by obliquely disposed rings 18, 20. The inner chamber 14 which is closed at the top by a cover 26 has an open bottom forming an inlet for the mixture of steam and entrained water coming from the evaporator, the mixture passing through an opening 28 in the wall 12 into the space 16. To one side of the opening a partition 30 closes off the space so that the mixture must pass almost completely around the inner chamber to reach an outlet 32 in the outer wall. Entrained water is thrown against wall 10 by centrifugal force and drains into a trough 22 whence it is withdrawn through an outlet 24. An angle-secion maffle 36 on wall 10 prevents re-entrainment of the water. To promote separation the vapour velocity is increased as it enters' passage 16 by restricting the passage by a baffle 34 projecting from the side of opening 28.
Patent GB-614425-A (GB)
Title: Latch assembly
IPC: E05C3/12
Filed: 1946-03-05
Abstract: 614,425. Latch assembly. HARTWELL, C., and HARTWELL, S., (trading as HARTWELL AVIATION SUPPLY CO.). March 5, 1946, No. 6840. Convention date, April 16, 1945. [Class 44] A flush latch structure for use in securing e.g. inspection panels in the exterior body of an aircraft comprises a mounting plate provided with a centrally arranged slot and two pairs of journal lugs 4, 5 bordering the slot. Each pair of lugs carries a pin 6, 12 on which are journalled the latch lever 7 and keeper lever 13 respectively, the levers being of channel crosssection fitting within the slot to occupy coplanar closed positions and angular open positions. The keeper lever 13 is provided with a lip 14 engageable with the web 3 of the mounting plate. The latch lever 7 is provided with a cam face 11 which engages the end of lever 13, causing it to move towards the dotted position shown, when lever 7 approaches its latched position, until the lip 10 of the latch lever clears the keeper lever, whereupon this latter snaps to its closed position, under the action of springs 16 connected between the two levers and which tend to turn lever 7 into its open position. The journal pin 12 of the keeper lever 13 is so positioned as to constitute a stop limiting inward travel of the cam space 11.
Patent GB-863950-A (GB)
Title: Covers for vehicles
IPC: A24B5/10
Filed: 1959-02-27
Abstract: 863,950. Vehicle covers. TALBOT, R. Feb. 27, 1959 [Aug. 20, 1958], No. 6846/59. Addition to 829,473. Class 103(2). The roof of a railway &c. freight wagon has a hinged cover 4 as claimed in the parent Specification having supporting rollers 19 to 22 projecting below the underside of the cover, which on lateral opening of the cover are adapted to run on an arcuate supporting rail 23 formed at the level of the rollers and mounted on the side wall of the wagon. The upper edges of the side walls have supports 26, 27 which have ramps 28, 29 to raise the central portion of the cover by co-operating with stiffeners 17, 18 on the cover in the event of the cover sagging during opening.
Patent GB-267549-A (GB)
Title: Improvements in or relating to power shovels
IPC: E02F3/42
Filed: 1927-03-11
Abstract: 267,549. Berger, W. March 13, 1926, [Convention date]. Scoop-arm machines have the shovel 8, together with a grooved disc 9 or the like, rotatably mounted at the end of the scoop-arm 7; the hoisting cable 21 passes from winches 18, 19 over jib pulleys 13, 14, guide pulleys 26, 27, on the scoop-arm and around the disc &c. 9, whereby the scoop arm is lifted by driving the winches 18, 19 similarly, while by driving the winches differently, the scoop may be rotated for dumping or for adjusting the cutting angle. The scooparm is slidably arranged in a sleeve 5 pivoted at 6 to the jib. A counterweight 24 acts through a cable 23, passing over a jib pulley 16 and a pulley 11 to the forward end of the scoop-arm, to retract the scoop-arm. Positive forward movement of the scoop-arm is effected by a cable 22 passing from a winch 20 over a jib pulley 15 and round a pulley 12 to the rear of the scoop-arm, or over a further pulley 10 to the front of the scoop-arm. The Specification as open to inspection under Sect. 91 (3) (a) states that the scoop-arm may be lowered into vertical position and then guided by a fork fixed to the jib, the scoop then being used for planing; further, the winches may be driven by separate engines. This subject-matter does not appear in the Specification as accepted.
Patent GB-576306-A (GB)
Title: Manufacture of monoazo dyestuffs, capable of being chromed
IPC: C09B45/16
Filed: 1943-05-04
Abstract: Monoazo dyes, chromable in substance, in the dyebath or on the fibre, are obtained by coupling diazotised 4-nitro-2-aminophenol-6-sulphonic acid with a phenol of the general formula <FORM:0576306/IV/1> wherein X represents tertiary alkyl with at most 8 carbon atoms or cycloalkyl and Y represents alkyl with at most 8 carbon atoms or cycloalkyl and Z represents H or methyl.  Specified coupling components are 2 : 4-di-(tert.-amyl)-phenol (cf. Specification 452,335), 2-tert.-butyl-4-tert.-amyl-phenol, 2 : 4-di-(tert.-butyl)-phenyl, 2-tert.-amyl-4-methyl-phenol, 2-tert.-octyl-4-methyl-phenol, 2-tert.-amyl-4 : 5-dimethyl - phenol, 2 - tert. - hexyl - 4 - tert. - butyl-phenol and 2-tert.-butyl-4-cyclohexylphenol.  Examples relate to the production of the dyestuffs having as coupling components: (1) 2 : 4-di-(tert.-amyl)-phenol; (2) 2-tert.-amyl-4-methyl-phenol or 2-tert.-hexyl-4-tert.-butyl-phenol.  Specifications 325,208, [Class 2 (iii)], and 450,127 also are referred to.  The Specification as open to inspection under Sect. 91 comprises also the manufacture of the corresponding dyestuffs in which (a) X in the general formula represents any alkyl residue containing from 3 to 8 carbon atoms, Y in the general formula represents chlorine, and specifies, as additional coupling components, 2-hexyl-4-chloro-phenol, 2-tert.-butyl-4-chloro-phenol, 2-propyl-4-tert.-butyl-phenol.  This subject-matter does not appear in the Specification as accepted. p 2-Tert.-butyl-4-tert.-amyl phenol is obtained by reaction of p-tert.-amyl phenol with trimethyl-carbinol in 72 per cent sulphuric acid at 60 DEG  C.  2-Tert.-amyl-4-methyl-phenol is obtained by similar reaction of p-cresol with tert.-amyl alcohol.  2-Tert.-amyl-4 : 5-dimethyl-phenol is obtained by similar reaction of 3 : 4-dimethyl-phenol with tert.-amyl alcohol. 2-Tert.-butyl-4-cyclohexyl-phenol is obtained by similar reaction of 4-cyclohexyl-phenol with trimethylcarbinol.  2-Octyl-4-methyl-phenol is obtained by heating p-cresol with di-isobutylene at 80 DEG  C. in presence of aluminium chloride.  2-Hexyl-4-tert.-butyl-phenol is obtained by similar heating of tetramethylethylene with p-tert.-butyl-phenol.
Patent GB-894855-A (GB)
Title: Process for the manufacture of polyvinyl acetal dispersions
IPC: C08J3/05
Filed: 1959-02-27
Abstract: Stable polyvinyl acetal dispersions are obtained by heating a minture of a polyvinyl acetal, water, an anion-active emulsifier and one or more auxiliary dispersing compounds to form a viscous and kneasable mass, and incorporating water into the mass by kneading and cooling until inversion to a resin-in-water type dispersion occurs.  The dispersing compounds may be (a) esters of an aliphatic monocarboxylic acid having 1 to 6 carbon atoms with an aliphatic monohydric alcohol having 1 to 6 carbon atoms, (b) an aliphatic acetal which is sparingly soluble in water, or (c) a halogen derivative of an acyclic hydrocarbon having 1-6 carbon atoms that is sparingly soluble in water.  The dispersing compound is preferably carbon tetrachloride, chloroform, trichloroethylene or perchlorethylene and may be added in an amount of 5-25% based on the weight of polyvinyl acetal.  The anion-active emulsifier may be an alkali-metal salt of a long chain fatty acid and may be added in an amount of 4 to 6%.  In examples, the following substances are used as dispersing compounds: (1) butyl acetate, (2) isoamyl acetate, (3) perchloroethylene, (4) di-n-propyl acetal, (5) carbon tetrachloride, (6) trichloroethylene, (7) dibutyl acetal, (8) dipropyl formal, (9) dipropyl propional and (10) isoamyl acetal.
Patent GB-131090-A (GB)
Title: Improved Apparatus for Diminishing the Recoil of Gun Carriages.
IPC: F41A23/40
Filed: 1918-04-26
Abstract: 131,090. Schneider et Cie. Aug. 16, 1917, [Convention date]. Addition to 131,059. Field carriages; recoil apparatus. -Consists in providing the railway-truck gun mounting described in the parent Specification with apparatus for diminishing the recoil and for automatically returning the carriage to the firing position, comprising a brake and a recuperator the fixed elements of which are formed in a box adapted to be clamped to !the rails. In the construction shown, the box B containing two brake cylinders D and a recuperator cylinder, is mounted by vertical trunnions B' in a casing C adapted to be clamped to the rails by jaws K, Fig. 3. The piston-rods of the brakes and recuperator are connected to a cross-head I which is connected to the gun carriage A by a link N. After the recoil, the recuperator returns the gun carriage to the firing position as soon as the friction blocks E are raised.
Patent GB-434652-A (GB)
Title: Improvements relating to cut gems and imitations thereof
IPC: A44C17/00
Filed: 1935-03-06
Abstract: 434,652. Gems. BAYARDI BROS., Inc., 21, West 46th Street, New York, U.S.A., LARTER & SONS, 88, Parkhurst Street, Newark, and SCHUETZ, G. A., 94, Pine Street, Maplewood, both in New Jersey, U.S.A. March 6, 1935, No. 7064. Convention date, March 6, 1934. [Class 43] The crown of a gem has a pair of converging end facets 3 joined by a number of elongated plane side facets 1, mutually inclined so that the cross-section is approximately a convex arc, preferably less than a semicircle, and a polyhedral base having two flat converging, roughly trapezoidal end faces E, joined by mutually inclined surfaces 5. The facets 1 are inclined to the girdle plane at angles between 50 and 20‹, the facets 5 are inclined to the plane at angles from 60 to 35‹, the facets 3 at angles from 50 to 70‹, and the facets E at angles from 30 to 50‹. The greatest thickness of the crown normal to the girdle plane is less than that of the base. The surface of the crown approximates to the surface of a cylinder, but in a modification, Fig. 7, it approximates to that of a cone.
Patent GB-1534757-A (GB)
Title: Electrostatic air conditioning
IPC: A61N1/10
Filed: 1976-02-23
Abstract: 1534757 Electrostatic air-conditioning ELEUIT GES FUR LUFT and KLIMAVERBESSERUNG mbH 23 Feb 1976 [22 Feb 1975] 07099/76 Heading H1X A room or other enclosure is air-conditioned by generating therein a pulsed electrostatic field, the pulse frequency being in the range 0À1 to 20 Hz, and the rising edge e and falling edge f of each pulse being of different duration. Preferably the pulses have a frequency of 10 Hz, a shorter duration edge of less than 100 Ásec., e.g. 10 Ásec., and a longer duration edge of more than 100 Ásec., e.g. 50 msec., the difference between the edges being a factor of at least 10, preferably 500. The pulses may be superimposed on a constant electrostatic field of 50 to 500 volts/m., the peak pulse field being, e.g. 5 volts/m. Either the rising edge or falling edge of the pulse may be the longer.
Patent GB-740538-A (GB)
Title: Machine for cutting gears
Inventor: BUELTMANN WILHELM
IPC: B23F1/06
Filed: 1952-03-20
Abstract: 740,538. Gear-cutting. DEMAG-BAGGERFABRIK GES. March 20, 1952, No. 7179/52. Class 83 (3). A machine for cutting gears by impact milling comprises a slide 4 carrying the cutter 8 and its driving motor 5, the slide being guided between two uprights 2, 3 by sliding surfaces at the front and back of the uprights. The slide is moved up and down by a screw 9 rotated by a motor 12. Clutch means actuated by adjustable stops on a rod 22, which is moved with the slide, provide a slow downward feed followed by a fast upward idle stroke. The feed-speed is determined by an infinitely-variable gear. The work 26 is mounted on a dividing head 28 on a support 27, which may be adjusted angularly by segmental gears attached thereto. The support is also adjustable along guides 29 to which the segments may be clamped to secure the support rigidly in adjusted position.
Patent GB-232562-A (GB)
Title: Improvements in combustion chambers for use with powdered fuel
IPC: F23M5/08
Filed: 1925-03-17
Abstract: 232,562. Soc. des Mines de Frankenholz. April 17, 1924, [Convention date]. Pulverulent - fuel furnaces; cooling.- The burners 3 deliver into elongated refractory-lined chambers 1, of which there may be one or more, and which are so proportioned that combustion is completed therein, so that the main chambers 5 can be reduced in size. Heat-absorbing containers 10, which may take the form of rows of tubes, are arranged, as shown, in the chamber 5 for the purpose of cooling the ash, and may serve to heat air, steam or water. Cooling air inlets are provided at 9 near the inclined bottom of the chamber.
Patent GB-1210866-A (GB)
Title: Perfume compositions
IPC: C11B9/00
Filed: 1968-02-14
Abstract: 1,210,866. Oximes. L. GIVAUDAN & CIE S.A. 14 Feb., 1968 [14 Feb., 1967], No. 7229/68. Heading C2C. [Also in Divisions A5 and C5] The compounds 3,7-dimethyloctanal oxime, 2,6 - dimethyl - 5 - heptenal oxime and 3- methylheptan-3-one oxime stated to be novel are prepared by the reaction of hydroxylamine with the corresponding aldehyde or ketone. The compounds are used in perfumes (see Division A5).
Patent GB-104792-A (GB)
Title: Improvements in and relating to Furnaces for Melting Metals and for other purposes.
Inventor: HALL ISAIAH
IPC: F27B14/12
Filed: 1916-05-22
Abstract: 104,792. Hall, I. May 22, 1916. Covers; joints.-In a metal-melting furnace, the joint ring between the furnace body and the cover or preheater is made in a number of detachable sections. The sections c are secured to the furnace body a oy set-screws d passing through radial slots e, and each is formed with an upstanding rim f and a groove h in which fits a corresponding projection i on the lid or preheater j. The radial joints between the sections may be tongued and grooved, and the upper part of the ring may be in the form of an annular trough for holding asbestos or similar sealing material. The detachable sections may be secured to the cover or preheater instead of to the furnace body.
Patent GB-652473-A (GB)
Title: Frequency modulated transmission system
IPC: H03C3/09
Filed: 1948-03-09
Abstract: 652,473. Frequency modulation. COMPAGNIE INDUSTRIELLE DES TELEPHONES. March 9, 1948, No. 7262. [Class 40 (v)] A frequency-modulation transmitter comprises a valve generator with two back-coupling circuits, one of which gives a phase-shift which is variable with frequency, whilst the other gives a constant phase-shift but is controlled as to amplitude and polarity by the modulating signal. The anode circuit of the oscillator valve L is back-coupled to the grid circuit by (a) a half-section constant-K filter 1 comprising series-tuned series elements and parallel-tuned shunt elements both resonant at the mean carrier frequency and by (b) a balanced amplitude modulator 4 comprising a rectifier bridge with the modulation signal 10, 11 applied at the mid-points of the input and output transformers, in series with an adjustable attenuator 2 and a network, not shown, which gives a constant phase shift, preferably 90 degrees, throughout the operating frequency range, and tends to eliminate harmonics of the carrier. In operation, the varying-amplitude constantphase voltage emerging from path (b) combines vectorially with the variable-phase voltage from path (a), to produce a resultant grid voltage, the frequency adjusting itself to a value which brings the grid voltage into phase opposition to the anode voltage.
Patent GB-1495854-A (GB)
Title: Method of selective dissolution of the non-ferrous metals contained in pyritic ores
IPC: C22B3/00
Filed: 1975-02-24
Abstract: 1495854 Extracting non-ferrous metals from pyritic ores SOC MINI’RE ET METALLURGIQUE DE PENARROYA 24 Feb 1975 [28 Feb 1974] 7717/75 Heading C1A A method of selective dissolution of the non- ferrous metals contained in a pyritic ore comprises crushing the ore, introducing the crushed ore at a temperature above 20‹ C. into a reaction vessel containing a solution of a chloride of iron or copper, and injecting gaseous chlorine into the reaction vessel at a rate such that the oxidationreduction potential remains between 300 and 700 uV w.r.t. hydrogen and the pH is controlled at - 1 to + 2 for iron and - 1 to +5 for copper. The contents of the vessel are preferably stirred while the crushed ore is being introduced.