baber/WOPTO huggingface dataset:
Patent GB-481383-A (GB)
Title: An improved method of manufacturing rolled sections from discarded rails
IPC: B21B1/08
Filed: 1936-12-11
Abstract: 481,383. Rolling profiled sections from old rails. HICKMAN, W. W. Dec. 11, 1936, No. 34014. [Class 83 (iv)] In a method of producing rolled profiled, sections from discarded rails, the rails are heated and severed longitudinally along the web so as to produce substantially similar sections which are then rolled to press the metal at one side of the bulbous head into the stub of the web, thus producing an angular section b<1> which may readily be converted by the passes c, d<a>, d<b> into sections from which a gothic section e<1>, Fig. 2, may be formed. The section e<1> is suitable for rolling into angle bars, or alternatively a section f<1> may be produced which is converted by passes g, h into a section h<1> suitable for rolling into square, round or flat bars &c. The first pass a of the threehigh rolls A, B, C, equalizes the shape of the two parts of the severed rail.
Patent GB-937887-A (GB)
Title: Production of alkynols and alkynediols
IPC: C07C29/42
Filed: 1961-09-22
Abstract: Catalysts for the production of alkynols by reacting a carbonyl compound with an acetylene hydrocarbon are made by depositing by impregnation copper and bismuth nitrates on a continuous phase silica gel carrier and heating the thus impregnated carrier within the range of 450 DEG -720 DEG C. for 2-100 hours to decompose the nitrates to the oxides whereby the carrier contains 15-20% Cu and 2-9% Bi. The catalyst may be activated with 10% formaldehyde solution. Examples describe the preparation of typical catalysts and their use to convert acetylene and formaldehyde to 2-butynediol 1:4 and propynol. Specification 807,581 and U.S.A.  Specifications 2,232,867, 2,300,969, 2,768,215 and 2,871,273 are referred to.ALSO:In the process of preparing alkynols by causing a carbonyl compound selected from the class consisting of aldehydes and ketones to react in the liquid phase with an acetylene hydrocarbon of formula R.C­CH in which R is hydrogen or a hydrocarbon radical a catalyst is used which comprises 15-20% Cu and 2-9% Bi on a continuous phase silica gel made by impregnating the latter with copper and bismuth nitrates and decomposing them into oxides by heating at 450-720 DEG C. for 2-100 hours.  Examples describe the use of such catalysts to convert acetylene and formaldehyde to 2-butynediol 1:4 and propynol. Specification 807,581 and U.S.A. Specifications 2,232,867, 2,300,969, 2,768,215 and 2,871,273 are referred to.
Patent GB-1094647-A (GB)
Title: Improvements in or relating to methods of, and apparatus for manufacturing disc gramophone records
Inventor: ERKELENS JOHANNES
IPC: B29C43/14
Filed: 1963-08-28
Abstract: 1,094,647. Moulding gramophone records. PHILIPS RECORDS Ltd. July 13, 1964 [Aug. 28, 1963], No. 34059/63. Heading B5A. In the manufacture of a disc gramophone record, a blank is prepared from thermoplastic material to the required dimensions, but without sound-track, and the sound-track is subsequently applied by an embossing process at a pressure of from 30-200 kg/cm.<2> and at a temperature of from 60-200‹ C. In the embodiment shown, granules of P.V.C./P.V.A. copolymer are fused into cakes 2 in an oven 1, the cakes are transferred via an oven 4, which maintains the cakes in a softened state, to a moulding press 5 where profiled blank discs 6 are formed, the discs are transferred to a trimming press 7 which removes peripheral flash, and from thence the discs are transferred to a groove embossing press 8. The moulds of press 5 may be preheated and central register holes may be provided at this stage, arcuate slots for an optional hole being provided by press 7 when necessary. In a modification, the cakes are formed in trays containing predetermined quantities of granules which are passed through a preheating oven. Numerous embodiments are described including, (a) supplying the moulding material as a continuously extruded strip (10), Fig. 2 (not shown) the discs formed by press (5) remaining attached to the parent strip until trimming stage (7) which occurs in this case after embossing, (b) using preheated tablets (14), Fig. 3 (not shown), which may be of laminated material and are larger in diameter than discs 6, (c) using a continuous strip of laminated material (16), Fig. 4 (not shown), comprising inexpensive filling material between thermoplastic material, from which the discs are removed, and (d) producing the blank discs by an injection moulding pro-. cess (not shown).
Patent GB-486963-A (GB)
Title: Improvements in locks or latches
IPC: E05C1/16
Filed: 1936-12-15
Abstract: 486,963. Locks and latches. SANSOME, R. D., and PILKINGTON, W. Dec. 15, 1936, No. 34354. [Classes 44 and 65 (i)] A lock or latch bolt 19 enclosed in a casing 12 by a face plate 13 which has upward and downward extensions forming a finger plate 10, has dead locking mechanism mounted on the back of one of the extensions externally of the casing. The dead locking mechanism which may be enclosed by a casing formed by ribs 41, 42 cast or stamped on the back of the plate 10, consists of a spring loaded member 37 having a projection 38 which cooperates with a part 40 of the bar 33 to hold the bolt 19 in the position to which it has been moved by the handle 22. The member 37 may be operated by a finger piece 35 through a cam 36 as shown or may be directly attached thereto. The bolt 19 may be held in the shot out position by the arm 28 engaging behind the part 34 of the bar 33. This arm which is freely mounted on the member 24 is provided with a projection 29 which co-operates with shoulders 30 on a disc 31 fixed to the member 24. so that the latter can be turned through a considerable angle without affecting the arm 28. Normally the bolt is retractable by the inside handle 22 or by an outside key or handle acting through the member 28 which engages the part 32. If, however the outside key or handle is turned through a complete revolution the arm 28 engages behind the part 34. Specifications 399,348 and 412,212 are referred to.
Patent GB-348660-A (GB)
IPC: G01S1/72
Filed: 1929-11-11
Abstract: 348,660. Directive wireless signalling. ELECTROACUSTIC GES., Werk Ravensberg, Kiel, Germany. Nov. 11, 1929, No. 34415. Convention date, Dec. 6, 1928. [Class 40 (v).] In apparatus for the directional transmission or reception of wave energy in three dimensions in space for use for example in determining acoustically the direction of an aeroplane, but applicable also to electric waves, one or more fixed groups of oscillators 1, 2, 3, &c., distributed in two dimensions in space are connected to electric or mechanical adjustable compensating means 5 .. 8, &c., whereby the direction of maximum transmission or reception may be adjusted in three dimensions in space. The retardation lines 5 .. 8, &c., between the oscillators and the telephone or generator 9 are shown adjusted so as to swing the vector characteristic 4<1> to the right. The directional characteristic may be swung both in the plane of the drawing and in a plane perpendicular thereto, either by the use of a single compensator, as shown, or by two separate compensators for determining the elevation and azimuth respectively. Moreover, compensators through which the energy fron. all the receivers passes, as described in Specification 299,475, may be used instead of employing a separate retardation line in each circuit. Two circular groups of receivers 30 .. 39, 40 .. 45, each associated with two compensators 71, 74 and 72, 73 for elevation and azimuth determinations, may be used, the smaller group being used first to locate roughly the direction of the sound source after which the larger group is used for more accurate determination, as explained in Specification 304,124, [Class 40 (v), Wireless signalling &c.]. Specification 318,509, [Class 40 (v), Wireless signalling &c.], is also referred to.
Patent GB-1116574-A (GB)
Title: An fm modulator oscillator
IPC: H03K3/30
Filed: 1965-08-11
Abstract: 1,116,574. Pulse modulation circuits. MINNESOTA MINING & MANUFACTURING CO. 11 Aug., 1965 [13 Aug., 1964], No. 34430/65. Heading H4L. An oscillator comprising a saturable-core inductor or other non-linear circuit element and whose frequency is dependent upon the magnitude of an input voltage is used as an F.M. modulator and has negative feedback to compensate for any changes in the characteristics of the said circuit element. Such a change might occur, for example, by an alteration of the saturation flux in a core owing to heating under load. As described, the collectors of two transistors 11, 12 are connected, respectively, to the ends of a centre-tapped input winding 13 of a saturable-core transformer 14, with their bases cross-coupled thereto through capacitorshunted resistors, and with their emitters commoned on a terminal 15 to which the frequencycontrolling voltage is applied. A centre-tapped secondary winding 17 of the transformer 14 gives an output which is rectified by diodes 18 so that a feedback voltage is developed in a line 19. This is combined in a network 20 with a constant bias voltage controlled by a Zener diode 21 and an adjustable proportion is applied to one transistor 24 of a differential amplifier 25. The feedback path is responsive to frequencies sufficiently higher than the maximum frequency in the operating range of the oscillator so that it is effective in reducing departures of the output waveform from rectangular. The modulating input is applied via a terminal 22 to the other transistor 23 of the differential amplifier 25, the output of which is coupled through an emitter follower amplifier 28 to the aforesaid terminal 15. The main frequency-modulated output is taken from one or other of the ends of the winding 13 of the transformer 14.
Patent GB-490729-A (GB)
Title: Manufacture of dyes and process for sensitising photographic silver halide emulsions
IPC: C09B23/02
Filed: 1937-01-15
Abstract: Cyanine dyes are made by condensing a quaternary salt of a heterocyclic base of the formula <FORM:0490729/IV/1> wherein R=aryl or substituted aryl, with an alkyl ester of an orthocarboxylic acid, b -anilinoacrolein anil or b -ethoxyacrolein acetal, a diaryl formamidine or glutaconic aldehyde dianilide hydrochloride.  Styryl dyes are made by condensing the quaternary salt with a p-dialkylaminobenzaldehyde.  Unsymmetrical cyanine dyes are made by condensing with a diaryl formamidine and treating the condensation product with the quaternary ammonium salt of a different heterocyclic base.  The dyestuffs are sensitizers for photographic emulsions.  In the examples: (1)-(4) 2 : 5-dimethyl - 3 - phenyl - 2 : 3 - dihydrothiodiazole (1 : 3 : 4) methiodide (from the base and methyl iodide) is condensed with triethyl orthoformate or acetate in acetic anhydride, with p-dimethylaminobenzaldehyde in alcohol in presence of piperidine, or with b -anilinoacrolein anil in presence of acetic anhydride and triethylamine, (5) the ethiodide of the same base is melted with diphenylformamidine and the intermediate condensed with the same quaternary salt or with a -naphthylquinoline ethiodide in acetic anhydride.  A sample has been furnished under Sect. 2 (5) of a dyestuff made by condensing 2 : 5-dimethyl-3-phenyl2 : 3-dihydrothiodiazole (1 : 3 : 4) ethiodide with glutaconic aldehyde dianilide hydrochloride in alcohol in presence of piperidine. Specification 479,926 is referred to.  Reference has been directed by the Comptroller to Specifications 425,609 and 479,926.
Patent GB-195153-A (GB)
Title: Improvements in effecting the recovery, or separation, of colloidal matter from liquids and apparatus to be employed therein
IPC: B01J13/00
Filed: 1921-12-22
Abstract: 195,153. Barber, T. W. Dec. 22, 1921. Addition to 132,947. Purifying liquids.- The method of causing colloidal matter to cohere, in order to facilitate subsequent separation, by projecting the liquid containing it against a surface, preferably after first saturating it with gas, as described in the parent Specification, is modified either by using a surface or surfaces which move in a direction opposite or at an angle to the direction of movement of the liquid or by first causing moving bodies to impinge upon the liquid. The surfaces may be constituted by the blades B, Fig. 1, of a rotary pump situated in a casing divided into two parts by a perforated partition a. The liquid is passed through from an inlet c to an outlet f. Air may be admitted to the casing through an opening coaxial with the blades. With the apparatus shown in Fig. 3, pins b<2> projecting from a rotating shaft impinge upon the liquid and eject small portions of it against a baffle B', from which they pass into a vessel g.
Patent GB-1344329-A (GB)
Title: Reduction of the surface resistances of ceramic bodies
IPC: C04B41/88
Filed: 1971-07-23
Abstract: 1344329 Coated products SIEMENS AG 23 July 1971 [24 July 1970] 34614/71 Heading B2E [Also in Division C1] Ceramic bodies, e.g. Al 2 O 3  are coated by immersing them, after cleaning, in a solution of a compound of a metal of groups IVA, VA or VIA of the Mendelew Periodic Table, containing LiF in solution or suspension, drying and sintering, first under weakly oxidising conditions, then under reducing conditions. The LiF may be present in a concentration of 80 mg/100 ml solution and a suitable solution comprises lithium polymolybdate 32 gm, LiF 80 mg, deionised water 100 ml and 10% aqueous tylose 4-6 ml. Lattice disturbed α-Al 2 O 3  lithium aluminate in the form of spinel Li 2 O.5Al 2 O 3  and metallic molybdenum inclusions are present in the sintered body. A solution of tetraisopropyl orthotitanate in toluene or xylene may also be used. The sintered body then shows the prescence of aluminium titanates and titanium oxides of the general formula TiO 2-x . The sintering temperature may be 1000-1300C and the weakly oxidising and reducing conditions may be provided by moist and dry cracked gas respectively.
Patent GB-426507-A (GB)
Title: Improvements in or relating to roller bearings
IPC: F16C33/54
Filed: 1933-12-12
Abstract: 426,507. Roller bearings. LEAK, W. H., 48, Spencer Road, and HURST, J., 27, Spencer Road, Wigan, Lancashire. Dec. 12, 1933, No. 34901. [Class 12 (i)] In a divided roller bearing particularly of the heavy duty type suitable for colliery tubs &c., the end ring elements or segments 20... 23 which are joined by pins passing through on one or more rollers 26, have axially - projecting abutments or feet 27 which prevent the two parts of the bearing riding past one another. Preferably all the rollers are mounted on pins. They have considerable play with respect to the pins and their ends are chamfered or radiused. Preferably the two parts of the bearing are semi-cylindrical as shown. Some of the rollers, say the intermediate ones, may be mounted on short centres projecting from the end ring segments into recesses in the roller ends. The end ring segments may alternatively be polygonal. Typical dimensions of a shaft bearing are given in the Specification. According to the Provisional Specification, the end ring segments may be joined by spring links.
Patent GB-155248-A (GB)
Title: Improvements in pipe couplings
IPC: F16L37/407
Filed: 1920-12-11
Abstract: 155,248. Duquesne, R. May 28, 1920, [Convention date]. Spigot-and-socket and like overlap joints with packing at base or mouth of socket; tapered spigot-and-socket joints; bayonet and like joints; with valves and cocks. - In an automaticallyclosing coupling for pipes carrying compressed air &c. comprising a spring-seated valve d in a socket a, raised from its seat b by the apertured extremity of a spigot f, a collar integral with the spigot f carries lugs h which engage with internal helicoidal grooves p in the mouth of the socket a. A rubber washer or gasket m keeps the coupling tight. Notches o hold the lugs in position when the valve is open, and other recesses p near the outer ends of the grooves hold the parts together in a preliminary coupling position before the valve commences to open. The cylindrical part of the hollow spigot is made sufficiently long to obviate leakage during the coupling. The Specification, in the original form, as open to inspection under Sect. 91 (3) (a) of the Act describes alternative coupling means comprising a conical part on the spigot member forced against the conical end of the socket a by means of a union nut. This subject-matter does not appear in the complete Specification as accepted.
Patent GB-749734-A (GB)
Title: Improvements in or relating to the continuous manufacture of certain alkyl nitrates
Inventor: BENTLEY MERVYN NISBET THRUSTON
IPC: B01J38/00
Filed: 1953-12-16
Abstract: A process for the continuous production of a propyl nitrate comprises keeping an aqueous reaction solution containing per 100 parts thereof between 30 and 45 parts nitric acid, at least 3 parts urea, and between 10 and 31.5 parts ammonium nitrate, all by weight, at a temperature between 105 DEG  and 112 DEG  C. (preferably 107-110 DEG C.) at atmospheric pressure, while maintaining this composition and the bulk by continuously introducing under the surface of the reaction solution nitric acid, the appropriate propyl alcohol, water and urea, at least the continuously added nitric acid and said propyl alcohol being introduced in separate streams, if desired already diluted with at least part of the continuously added water, at rates such that the molar ratio of added nitric acid to said propyl alcohol exceeds unity, and the continuously added urea being introduced in solution in at least one of the liquids streaming into the solution, continuously distilling away and condensing the resulting vapour mixture containing the propyl nitrate formed, continuously bleeding off a portion of the aqueous reaction solution of said composition, and separating the propyl nitrate rich layer of the condensate from the water rich layer.  The aqueous reaction solution may be progressively formed by heating a solution containing per 100 parts between 30 and 45 parts nitric acid and at least 9 parts urea or less than 9 parts but greater than 3 parts urea together with between 5.3 and 2.3 parts ammonium nitrate for each part of urea short of 9 parts.  Preferred nitric acid, urea and ammonium nitrate concentrations in the aqueous reaction solution are 45 per cent, 3 per cent and 22 per cent at 110 DEG  C.; 40 per cent, 3 per cent and 14 per cent at 110 DEG  C.; 40 per cent, 4 per cent and 18 per cent at 108 DEG  C.; 32 per cent, 6 per cent and 13 per cent at 105 DEG C.  The examples describe the preparation of n-propyl and isopropyl nitrate.  Specifications 379,312, 540,050, 696,489 and 743,141 are referred to.
Patent GB-909613-A (GB)
Title: Polycarbonate resins
IPC: C08L75/00
Filed: 1958-11-12
Abstract: Polycarbonates are made by first reacting a dihydric phenol free from C- mono or dibeta alkenyl substituents with a 1,2-monoepoxide of an ethylenic hydrocarbon to produce a bis(beta-hydroxyether) of said dihydric phenol and then reacting this ether with an aliphatic or aromatic bis-chloroformate.  The dihydric phenol may be an alkylidene or a cycloalkylidene bis-phenol (many specified) or it may be 4,41-thio-bis(3-methyl-6-tert. butyl phenol) or 3,4-(4,41-dihydroxy-diphenyl)-hexane.  Specified epoxides are ethylene-, propylene-, butylene-, butadiene- and cyclopentadiene-monoepoxide.  In an example, the bis-hydroxy ether obtained from 1 mol. of bis-phenol A and 2 mols. of monoepoxycyclopentadiene is reacted with the bischloroformate of bis-phenol A in the presence of methylene chloride and trimethyl benzyl ammonium hydroxide; the product is then cured by heating it with sulphur.  The products are useful in the manufacture of laminates, metal coatings, electrical insulation materials, potting compositions, films and fibres.ALSO:A hydroxyether of bis-phenol A (p,p1-isopropylidene diphenol) is made by reacting 1 mole of bis-phenol A with 2 moles of monoepoxycyclopentadiene at 35 DEG C. in the presence of methylene chloride.
Patent GB-1076480-A (GB)
Title: A web winding machine
Inventor: HUFFMAN HAROLD WALTER
IPC: B65H23/198
Filed: 1965-08-16
Abstract: 1,076,480. Winding webs. HAMILTON TOOL CO. Aug. 16, 1965, No. 35074/65. Heading B6B. [Also in Divisions F2 and G3] In an automatic tension control system for a web winder, a dancer roll riding on the web adjusts a pair of voltages energizing an eddy current brake associated with the cage of an epicyclic gear in the drive to the winder. As described, vertical movements of a dancer roll 22, Fig. 3, riding on a paper web 10 being wound in a printing press, operate one voltage selector 38 directly through a lever 30, and another voltage selector 220 through an hydraulic ram 240, a spring-restrained lever 270, and a gear chain 282. Ram 240 is coupled to a reservoir Q through one-way restrictor valves R, S adjusted to give the desired movement of voltage selector 220 in dependence on rate of variation of tension. The two voltage selectors are connected in cascade across a voltage source to control the energization of an eddy-current brake coupled through a belt 200 with the cage of an epicyclic gear located in the drive through a manually disengageable and reversible one-way clutch to the winding roll. Tension is thus maintained at a value dependent on the setting of a knob 300 which positions voltage selector 220 relative to lever 270.
Patent GB-987040-A (GB)
Title: Improvements in or relating to electric typewriters or like machines and driving cams therefor
Inventor: DECKER HERBERT
IPC: B41J7/94
Filed: 1963-09-05
Abstract: 987,040. Typewriters. M. GRUNDIG, [trading as GRUNDIG ELEKTRO-MECHANISCHE VERSUCHSANSTALT]. Sept. 5, 1963 [Oct. 13, 1962; Dec. 21, 1962], No. 35122/63. Heading B6F. A driving cam 1, Fig. 2, with an eccentric bearing surface 5 for the type lever mechanism of a typewriter of the kind using a continuously rotating driving roller 4, by which said cam is driven is characterized in that the length of the roller engaging bearing surface is adjustable to vary the striking force of the type levers. In one embodiment in Fig. 2, the cam which is made of synthetic plastic materials and moulded on to a lever 2 is provided with a screw 7 whose head 8 forms the adjustable extension. In another embodiment (in Fig. 4, not shown) the gap between the cam and screw head is provided with a synthetic plastic U-shaped insert to form a bridge. In still another embodiment (Fig. 3, not shown) the screw head is of a square cross-section the width corresponding the width of the cam surface 5. In a further embodiment, in Fig. 6, the adjustable extension is formed by a projection 26 having a bridge piece slidably received in a groove 24 of the cam 21. In a still further embodiment, in Fig. 10, the projection piece 46 has a recess 45 sliding on a nose piece 45 of the cam 41 and the projection piece is additionally guided by an arm 43 of the lever 40 engaging a groove 48 in the projection piece 46.
Patent GB-647657-A (GB)
Title: A turbulent pneumatic drying device
IPC: F26B17/10
Filed: 1947-12-31
Abstract: 647,657. Drying apparatus. PREPARATION INDUSTRIELLE DES COMBUSTIBLES. Dec. 31, 1947, No. 35137. Convention date, April 16, 1942. [Class 34(ii)] In a pneumatic drier hot gases from a furnace 1 mixed with cold air entering by a damper 2 are drawn by a fan 3 through a drying column divided into two compartments 4, 5 by a partition 9 which is extended as a shutter 10, thence to a cyclone separator 6. The shutter 10 is continuously oscillated to alternately open and close the compartments 4, 5 causing the velocity of the gases in each column to vary regularly from maximum to almost nil, increasing the turbulence. Amplitude of pulsation may be varied by displacing shutter 10 to vary its path of travel. The material is fed into the stream of gases through a hopper 7 having valve 8. In a modification the compartments 4, 5 are replaced by separate columns and shutter 10 is replaced by two closure members caused to rotate in unison.