baber/WOPTO huggingface dataset:
Patent GB-768770-A (GB)
Title: Amines
IPC: C07C237/00
Filed: 1955-04-14
Abstract: The invention comprises esters of the general formula <FORM:0768770/IV(b)/1> wherein n is an integer from 1 to 6 inclusive and R is a tertiary amino radical, and acid addition and quaternary ammonium salts thereof; and their preparation by esterifying a 2,6 - dimethyl - 4 - carbomethoxybenzoyl halide with a tertiary alkanolamine, ammonolysing the so-formed tertiary aminoalkyl ester of 2,6-dimethyl-4-carbomethoxy-benzoic acid to give a tertiary aminoalkyl 2,6-dimethyl-4-carbamoylbenzoat and subjecting this to a Hofmann degredation to the corresponding amine.  Tertiary alkanolamines which may be used include dialkylamino-, dicycloalkylamino-, alkylaralkylamino- and diaralkylamino-alkanols and heterocyclicamino-alkanols such as 1-pyrolidyl-, piperidino- and morpholino-alkanols and alkyl-substituted homologues thereof.  The Hofmann degradation, which is generally effected by dissolving the amide in a very slight excess of cold aqueous alkali-metal hypohalite solution followed by rapid warming, is advantageously modified by carrying out the reaction in an alcoholic solution with subsequent hydrolysis of the intermediate so obtained.  Salt forming acids referred to are hydrochloric, hydrobromic, sulphuric, acetic, lactic, tartaric, succinic, benzoic, salicylic and picric acids.  Quaternary ammonium salt-forming compounds referred to include alkyl halides, aralkyl halides and alkyl esters of aryl sulphonic acids. Examples describe the preparation of (1) b -diethyl aminoethyl-2,6-dimethyl-4-aminobenzoate via the intermediates diethylaminoethyl 2,6 - dimethyl - 4 - carbomethoxybenzoate, b  - diethylaminoethyl 2,6 - dimethyl-4 - carbamoyl benzoate and b  - diethylaminoethyl 2,6 - dimethyl - 4 - carbomethoxyaminobenzoate, the latter being hydrolysed with aqueous sodium hydroxide to the required product, which is converted to its methochloride, ethochloride, benzyl chloride, monohydrochloride, dihydrochloride, monoacetate, benzoate, citrate and sulphate; (2) b -dimethylaminoethyl 2,6-dimethyl - 4 - aminobenzoate, g  - dimethylaminopropyl, b  - diamylaminoethyl and b -dipropylaminoethyl 2,6-dimethyl-4 - aminobenzoates and acid addition and quaternary ammonium salts thereof.  A further list of esters according to the invention is also given.
Patent GB-153234-A (GB)
Title: Improvements in commutators for electric motors
IPC: H02K13/00
Filed: 1920-04-19
Abstract: 153,234. Hornby, F. April 19, 1920. Commutators of the disk type, mainly intended for small motors, comprise metal segments 25 embedded in a disk 21 of insulating-material. The segments may either be pressed into apertures in a skeleton disk or moulded into the disk, and are supported by front and rear disks 27, 28 of insulating-material, the rear disk 27 leaving a part of the segments exposed for connexion to the armature windings.
Patent GB-1070495-A (GB)
Title: Improvements in screw cutting lathes and other screw cutting machines
Inventor: LUCIE ALBERT
IPC: B23Q5/48
Filed: 1965-03-15
Abstract: 1,070,495. Screw-cutting lathes. WICKMAN LANG Ltd., and JOHN LANG & SONS Ltd. March 11, 1966 [March 15, 1965], No. 10830/65. Headings B3B and B3T. A multi-start screw-cutting lathe includes a driven work spindle (10), (Fig. 1, not shown), and a lead screw (17) for traversing a tool (not shown), drive to the lead screw (17) being taken from the work spindle (10) through a reversing gear unit (18), a differential gear unit (19) and variable ratio gear trains (20, 21, 22). One shaft (25) of the differential is normally held stationary by means of a ratchet wheel (41) and pawls (40, 42) arranged at the end of the shaft but is rotatable to effect indexing of the work spindle (10) relative to the tool before commencement of a second cut by means of a fluid-pressure operated rack (29) in mesh with a pinion (28) formed on a bush (27) surrounding the shaft (25). A replaceable collar (49), (Fig. 2, not shown), of suitable length is mounted on the end of the rack (29) and co-operates with a limit switch (50) to determine the length of stroke-of-the sack and thereby the degree of indexing. An interlock switch (50a) is also provided to prevent a cut being taken during indexing. The length of the collar (49) may be varied to change the angle through which the work spindle is indexed relative to the too].
Patent GB-532584-A (GB)
Title: Arrangements for indicating the identity of a faulty unattended repeater at a terminal or attended station
IPC: H04B17/40
Filed: 1939-07-21
Abstract: 532,584. Repeaters. STANDARD TELEPHONES & CABLES, Ltd., JACOBSEN, B. B., ROCHE, A. H., and TERRY, V. J. July 21, 1939, No. 10910/40. Divided out of 532,523. [Class 40 (iv)] In a submarine or other unattended repeater, heat-sensitive means is associated with a filament circuit and gives a signal characteristic of the repeater. For example, a selfinterrupting thermal relay may be associated with a valve filament so as to remain inert until the filament breaks and then to send impulses at a characteristic rate, Figs. 2 and 3 (not shown). Alternatively, the filament supply circuit is bridged by a circuit comprising a resistance R in series with two branches, the current on each of which heats a " thermistor " in the other branch. (A " thermistor " is a resistance element, e.g. of silver sulphide, of which the resistance is gradually reduced with rise in temperature up to a critical temperature at which any further rise causes an abrupt diminution of resistance.) While the filament circuit is intact this is without effect but when it breaks the resulting rise in current, if the left hand branch has at the time a lower resistance than the other, causes the resistance of the right-hand path to be lowered when the heater of " thermistor " B becomes effective and that of the left-hand one to increase when, as a result, the current through " thermistor " A is reduced. The condition is then reversed and so on at a rate depending on the rate of heat transmission from the heaters to their " thermistors " and the periodic impedance change gives a signal at an attended station.
Patent GB-527402-A (GB)
Title: A process for the separation of an azeotropic vapour mixture containing alkyl phenols
IPC: B01D3/36
Filed: 1939-04-11
Abstract: 527,402. Purifying alkyl phenols by distillation. FIFE, J. G. (Naamlooze Vennootschap de Bataafsche Petroleum Maatschappij). April 11, 1939, No. 10992. [Class 32] [Also in Group IV] An azeotropic vapour mixture of steam, mercaptans, and alkyl phenols is separated into its constituents by a process which comprises cooling the mixture to produce a hot condensate composed of two liquid layers, a lower layer consisting essentially of water, an upper oily layer composed of mercaptans and alkyl phenols. The oily layer is fractionally distilled to produce an overhead mercaptan fraction having an end boiling point below the boiling temperature of the alkyl phenols present in the mixture, leaving a residual alkyl-phenol fraction which may contain a small amount of relatively high boiling mercaptans. An aqueous solution containing alkyl phenolates and mercaptans, such as is obtained in sweetening gasoline, is preheated and introduced into a column which is supplied at the base with live steam. The vapours leaving the head of the column are condensed at a temperature just below 100‹C. The hot condensate and uncondensed vapours are passed to a tank. The oily layer which separates in the tank is withdrawn, heated in a heater, and fractionated in a second column. Mercaptans and a small amount of water are taken off from the head of the second column; while the residual fraction, which comprises alkyl phenols and mercaptans boiling above 200‹C, is withdrawn at the base. The alkyl phenols so obtained may be blown with air to oxidize the residual mercaptans to disulphides. The alkyl phenols are then submitted to vacuum fractionation in a third column ; the purified alkyl phenols being taken overhead. The aqueous layer, from the decantation tank may be used to dilute the feed to the first column. Specification 519,397 is referred to.
Patent GB-1098256-A (GB)
Title: Improvements in plug gauges
Inventor: PORTER CHARLES HACKWOOD
IPC: G01B3/50
Filed: 1965-03-16
Abstract: 1,098,256. Plug gauges. HAROLDS GAUGES Ltd. June 6, 1966 [March 16, 1965], No.11025/65. Addition to 1, 074, 814. Heading G1M. A plug gauge has a frusto-conical end portion 11 cut away at 13 to form a portion having a flat surface for indicating the gauging position.
Patent GB-107682-A (GB)
Title: Improvements in or relating to Electric Oscillating or Wireless Systems and Apparatus.
IPC: H04K1/00
Filed: 1916-08-04
Abstract: 107,682. Indo-European Telegraph Co., and Morse, A. H. Aug. 4, 1916. Regulating transformers.-The secondary winding 14 of a high frequency transformer 5, 14 is mounted on a sliding rod 19 the position of which, relative to the coil 5, is varied by means of a cam 21 mounted on a rotatable shaft 3.
Patent GB-943781-A (GB)
Title: Method of measuring and apparatus therefor
IPC: G01K13/04
Filed: 1961-03-27
Abstract: 943,781. Electric selective signalling systems. FAIRBANKS, MORSE & CO. March 27, 1961 [March 31, 1960], No. 11141/61. Heading G4H. In a system for digitising an unknown amplitude significant voltage, which may represent for example a weight, a pressure or a temperature, the unknown voltage is compared with a linearly increasing voltage and the time taken for equality to be reached is determined by counting the number of constant frequency clock pulses that occur in this period. As described the unknown voltage, from a source 24, and the linearly increasing voltage, from an integrator 12, are applied to a comparator 16, the output of which via a flip-flop 14, controls a gate 18 through which clock pulses from a Pierce oscillator 20 pass to a counter 10 having a visual output. A digitising cycle can be initiated either manually, by a switch 52, or automatically, at a repetition frequency selected by a switch 34, by a neon oscillator, if a switch 47 is closed. A connection 74 from the oscillator ensures that the commencement of integration and the opening of gate 18 will occur in phase with the clock pulses. At the very beginning of each cycle the counter 10 is zeroised by a tube 51.
Patent GB-453287-A (GB)
Title: Improvements in compression ignition direct injection oil engines
IPC: F01L1/28
Filed: 1935-04-11
Abstract: 453,287. Oil engines ; cylinders. BARTON, T. H., Chilwell Road, Beeston, Nottinghamshire. April 11, 1935, No. 11196. [Classes 7 (ii) and 7 (iii)] In compressionignition direct-injection oil engines comprising a valve D controlling both inlet and exhaust, the valve - stem D<1> is supported in a guide J centrally disposed in a main air inlet passage L of circular cross-section leading to the valve-controlled opening, the guide J being secured to a baffle K, which closes up that part of the passage L above the guide and leaves the part below the guide open and is shaped so as to direct the exhaust gases into the exhaust outlet. The valve D and its seat form the main portion of one side of a combustion chamber B, the other side comprising a plug E, which may be replaced by a longer or shorter plug to vary the size of the chamber. A fuel nozzle Q may be provided in the end of the combustion chamber or in the plug E. Further air inlet ports O may be carried in from each side of the cylinder head.
Patent GB-478622-A (GB)
Title: A new or improved method of and means for producing cast tubular metal articles
Filed: 1937-04-20
Abstract: 478,622. Casting - machines. JONES, W. April 20, 1937, No. 11231. [Class 83 (i)] Relates to means for casting tubular articles such as gas containers, flanged pipes &c. in which a core is introduced into a mould containing molten metal and rotated therein during the operation and consists is mounting the core above the mould and raising or lowering it into or out of the mould through an opening in the top thereof. The core may be reciprocated by hydraulic mechanism and there may be a plurality of moulds mounted on a carrier. As shown, a core 5 reciprocated by a plunger 16 in a cylinder 17 is carried by plates 13, 14 spaced apart by pillars 37 and moving along fixed standards 12 attached to framing 10, 11. Gearing 19, 20 is carried on a bracket 22, mounted on the plate 14, and carrying one element 23 of a dog clutch the other element 24 of which is slidable on a shaft 25 carrying a gear 26. Longitudinal movement of the shaft 25 brings the gear 26 into and out of engagement with a gear 27 driven by a shaft 30 and correspondingly brings the clutch element 24 into and out of operative position. Moulds 4 are mounted on a sliding carrier 3 moved by a screw 6 and nut 7.
Patent GB-1357710-A (GB)
Title: Motor reversing control for fluid operated tool
IPC: B25B23/145
Filed: 1973-03-08
Abstract: 1357710 Motor reversing control for fluid operated tool GARDNER-DENVER CO 8 March 1973 [5 Sept 1972] 11336/73 Heading B3N A fluid actuated tool comprises a housing 12 containing a reversible fluid motor 14, a fluid inlet passage 38, first passage means 62, 64, for conducting pressure fluid to operate the motor in one direction, and second passage means 106 for conducting pressure fluid to operate the motor in the opposite direction, a reversing valve member 40 movable between a first position, Fig. 1, in which the inlet passage is connected to said first passage means, and a second position in which said inlet passage is connected to said second passage means, and, means, check valve 80, responsive to a predetermined fluid pressure in said tool for allowing said valve member to move from said first position to said second position to reverse said motor. In operation with the valve member 40 as shown in Fig. 1, a start valve 60 is depressed to allow fluid to flow from passage 38, through part of valve 40 and along passages 62, 64 to the motor. Passage 106 is connected to exhaust passage 108. At a predetermined torque the inlet pressure in passage 64 rises to free valve 80 off its seat and allow fluid to pass along passages 86, 88 into chamber 54. The fluid pressure causes movement of the valve member. After the initial movement fluid passes through passage 52 from the inlet passage 38 to chamber 54 to help in moving valve 40 and retaining it in its second position. In this position fluid passes through valve 40 to passage 106 and thence the motor for reverse rotation. Passages 62, 64 are connected to exhaust passage 108. Release of valve 60 allows chamber 54 to be vented along passages 88 and 92.
Patent GB-254829-A (GB)
Title: Subsidiary load-bearing extension chassis for motor vehicles
IPC: B62D53/06
Filed: 1925-05-02
Abstract: 254,829. Eagle Engineering Co., Ltd., and Woodward, W. A. May 2, 1925. Compound road vehicles.-In vehicles in which a trailer is pivoted to a motor vehicle at a point in advance of the rear axle of the latter, the connection is such that the trailer wheels are placed as near as possible to the rear axle of the motor vehicle. Guides 16 on the trailer contact with the frame 7 of the motor vehicle. The connection may be by means of a hinge pin 9 or a universal coupling.
Patent GB-1391794-A (GB)
Title: Apparatus for opening and closing the mould of a moulding machine
IPC: B22D17/26
Filed: 1972-03-10
Abstract: 1391794 Injection mould closing devices R G JENKINS (Maschinenbau Rapp & Seidt) 10 March 1972 11414/72 Heading B5A Apparatus for opening and closing an injection mould comprises two mould supports 18, 26 which are relatively movable and at least one of the supports is in the form of a grating composed of a first plurality of strips extending parallel to one another and perpendicular to a second plurality of parallel strips. The invention facilitates the use of moulds of different sizes. As shown, two gratings are used, one, 18, being fixed and the other, 26, being slidable on rods 22 by a pressure cylinder 28. The mould comprises two parts 32, 34 and a core 52 also mounted on a grating 54 which can be reciprocated on rods 56 by a pressure cylinder 62. The apparatus is mounted in a frame 12 which can be pivoted about an axle 16 mounted in a table 10. Spring- biased ejector pins 40 operate when their heads 42 contact a stationary plate 20.
Patent GB-107686-A (GB)
Title: Improvements in Bakers' Ovens.
IPC: A21B1/48
Filed: 1916-08-12
Abstract: 107,686. Baker & Sons, J., Kirman, H., and Taroni, C. E. Aug. 12, 1916. Bakers' ovens.-In a travelling-sole oven, the return run of the sole is supported by endless chains, which are positively driven at the same speed as the sole. The sole comprises a number of transverse sections, each of which consists of a plate of small size and light weight, and it is preferably divided into longitudinal sections which can be driven separately or all together. Fig. 1<a> shows the rear end of an oven with a travelling sole 14 supported on rails 16 and driven by sprocket-wheels 14<a>. The sole is formed by plates 18, Fig. 4, of smaller size and lighter weight than is customary, and its return run is supported by chains 19 on tracks 29, sprockets 20, and guidewheels 33. The wheels 14<a>, 20 are driven at the same peripheral speed by bevel-gearing and an adjustable vertical shaft at the side of the oven. The sole shown in Fig. 4 has three distinct sections 34, 35, 36, each mounted as described, and driven by gearing 37, 39, 40. The gearing 37 drives the spindle 22 and the section 34; the gearing 39 drives the spindle 22a and the section 35, and the gearing 40 drives the sleeve 22b and the section 36. Clutches enable the spindles and sleeves to be connected so that all three soles may be driven at the same speed from the gearing 37.
Patent GB-526777-A (GB)
Title: Improvements in or relating to piston compressors
IPC: F04B39/08
Filed: 1939-04-14
Abstract: 526,777. Air compressors. ATELIERS G.A.R.B. April 14, 1939, No. 11436. Convention date, April 16, 1938. [Class 8 (i)] The suction valve 5 of a compressor is actuated by a cam 8 so shaped that during one or more complete cycles the valve is allowed to close during the compression stroke, the air being delivered to a container 7, while during another one or more cycles the valve is held open and the air either delivered to atmosphere, e.g. blown on to the cylinder for cooling purposes, or delivered to a low-pressure storage vessel. The cam may be shaped to allow a momentary closure at the end of every compression stroke to prevent contact of piston with valve.
Patent GB-153339-A (GB)
Title: Improvements in or relating to means for supplying glass from furnaces to moulding or pressing machines
IPC: C03B7/10
Filed: 1919-05-08
Abstract: 153,339. Daubenspeck, H. C., and Winder, S. E. May 8, 1919. Delivering molten metal.-The molten metal is delivered through an outlet d, the rate of flow being controlled by a valve e, and is allowed to run continuously. The stream is cut by pneumatically-actuated shears having an exceedingly rapid action so that the flow is not checked. The shears are placed close up to the outlet and consist of arms g carrying blades d. They are actuated in known manner through links i by a pneumatic &c. chamber h. The arms of the shears are forced together by a spring m encircling the pivot pin h and adjustable by nuts n. The severed charge falls into a mould which is brought close under the shears. In a modification, the molten metal is discharged horizontally, the shears in this case being arranged in a vertical plane, and the blades being of adze-like form as described in Specification 146,602. The furnace is provided with blowpipe inlets f to maintain the temperature of the glass.
Patent GB-115655-A (GB)
IPC: B23Q5/10
Abstract: 115,655. Scholey, H. April 4, 1917. Lathes; milling-machines; driving machines.- Lathes, Fig. 3, drilling or milling machines, or other machine tools are driven individually by constant-current series electric motors producing a constant torque at varying speeds, the usual change-speed gears being dispensed with. The motors are controlled by shifting the brushes by means of a handle H, Fig. 1. The motors may be supplied from a special series generator which is regulated for constant current by an automatic device for moving its brushes; this generator may be driven by an electric motor supplied from a main system or by any form of prime mover.
Patent GB-413093-A (GB)
Title: Method of making photographic prints
IPC: G03C1/73
Filed: 1933-04-20
Abstract: 413,093. Photographic sensitive materials. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. April 20, 1933, No. 11580. Convention date, May 7, 1932. [Class 98 (ii).] A printing material sensitive to ultraviolet light but insensitive to visible light is formed by applying to a carrier a mixture of an aminosubstituted cyclic organic compound and a colourless inorganic oxidizing agent. Examples are given of mixtures containing nitric acid with either aniline, ortho-, meta- or paraaminophenol, aminodiphenylamine, or mixtures of aniline with ortho- or metadiphenylamine ; mixtures containing potassium nitrate with either ortho-aminophenol-para-sulpho acid, metol, paraphenylene di-amine and hydrochloric acid, amidol, or 2 : 6-diamino-1-phenol- 4-sulphate ; mixtures containing lithium nitrate with either #.naphthylamine, collodion, dianisidine, or benzidine, collodion and nitric acid ; a mixture of ortho-phenylene diamine, trichloracetic acid and potassium chlorate ; and the nitrate of diphenylamine or the nitrate of benzidine used alone. The support may be quartz, acetyl cellulose, regenerated cellulose, for example, that known under the Registered Trade Mark " Cellophane," or glass transparent to ultraviolet light. A quartz mercury lamp, a carbon arc lamp, a mercury or magnesium discharge tube, or an overloaded incandescent lamp with a tungsten filament may be used as light source.
Patent GB-234622-A (GB)
Title: Improvements relating to vapour lamps or burners
IPC: F23D11/44
Filed: 1924-05-10
Abstract: 234,622. Parkinson & W. & B. Cowan, Ltd., and Meads, H. J. May 10, 1924. Portable hand pumps.-The air pump which supplies compressed air to the oil container of a vapour lamp is provided with a tubular plunger rod having a stem passing through it, the inner end of the stem being adapted to close the outlet to the container and the outer end having a grip or finger piece. A stem a passes through the hollow plunger rod b, and has a conical screwed end d which when screwed home seats on or in a piece e forming the pump outlet to the container. The non-return valve is contained in a cap g provided with an outlet hole i. Specifications 333/03, 4551/10, and 152,855, are referred to.
Patent GB-939477-A (GB)
Title: Method for photochemically producing high molecular weight polymer of formaldehyde
IPC: C08G2/00
Filed: 1962-03-27
Abstract: High molecular weight polymers of formaldehyde are prepared by dispersing anhydrous formaldehyde in an anhydrous inert liquid medium which is a non-solvent for the monomer and exposing the dispersion to ultra-violet irradiation.  A surfactant or a dispersion stabilizer may also be present while the liquid media may be a hydrocarbon, a halogenhydrocarbon, an ether or a ketone. The irradiation may take place at +150 DEG  to -200 DEG C.