baber/WOPTO huggingface dataset:
Patent GB-687171-A (GB)
Title: Improvements in and relating to the separation of water and propanol from propylamines by distillation
Inventor: CHALLIS ANTHONY ARTHUR LEONARD
Filed: 1950-08-04
Abstract: Concentrates of di-n-propylamine and/or tri-n-propylamine are obtained from a mixture containing these amines together with water and n-propanol, such as a mixture obtained by the amination of n-propanol, by subjecting the mixture to fractional distillation in the presence of a hydrocarbon boiling between 75 DEG  and 85 DEG C, whereby water and n-propanol are distilled off overhead as constituents of azeotropes formed by the hydrocarbon with these compounds, leaving the amine-concentrate in the still. Benzene, cyclohexane or a paraffin fraction boiling between 75 DEG  and 85 DEG C may be used as entrainer.  In an example, the starting-material was a mixture having the following volume composition: 25 per cent mono-n-propylamine, 25 per cent di-n-propylamine, 20 per cent tri-n-propylamine, 8 per cent n-propanol, and 22 per cent water.  The mixture (5 litres) was fractionated in a column equivalent to 30 theoretical plates; and 1200 mls. of substantially pure mono-amine was collected between 48 DEG  and 50 DEG C.  On continuing the fractionation until the head temperature reached 80 DEG C an interfraction of 40 mls. was collected.  The distillation was then stopped; and the boiler, p  after addition of 400 mls. benzene, was allowed to cool at 60 DEG C. The liquid now comprised two layers. The lower layers contained 99.4 per cent water, and was removed from the boiler.  The distillation was now continued, and at 68.5 DEG  to 77 DEG C the water/propanol/benzene azeotrope was distilled off and condensed.  The distillate was allowed to separate into two liquid layers in a decanter maintained at 40 DEG  to 50 DEG C.  The hydrocarbon-rich upper layer (which also contained propanol) was returned to the column.  The lower layer (101 ml.), which contained 97 per cent water, was withdrawn from the system.  When the now anhydrous distilland was further fractioned, the benzene/propanol azeotrope came over between 77 DEG  and 77.5 DEG C and was followed by a fraction (77.5 DEG -106 DEG C) containing propanol and di-n-propylamine.  Then, with the head temperature at 106 DEG -110 DEG , there was obtained 1204 ml, of substantially pure di-n-propylamine.  Finally, 804 ml. of 99 per cent tri-n-propylamine was obtained between 150 DEG  and 156 DEG .  The benzene/propanol azeotrope was re-used in a subsequent azeotropic dehydration.
Patent GB-1128756-A (GB)
Title: Hot gas quencher
Inventor: PERKINS ALAN JAMES
IPC: F28C3/06
Filed: 1966-05-04
Abstract: 1,128,756. Cooling gases with liquids. CHEMICAL CONSTRUCTION CORP. 4 May, 1966, No. 19746/66. Headings F4K and F4S. [Also in Division B1] A hot gas quencher 6, which receives a gas stream 1 either from a refractory lined stack 2 or from an extension of the quencher connected directly to a metallic hood (23, Fig. 4) disposed above a furnace opening, consists of a horizontal and a vertical section, the latter comprising an inverted and truncated cone-like baffle 19 above which is disposed a plurality of tangential water inlets 12 and a central spray unit 10. The tangential disposition of the inlets 12 serves to produce a film of water spiralling down baffle 19 so ensuring rapid and complete quenching of the hot gas. The quencher 6 is provided on its outer surface with a plurality of channels 8 for cooling water 14, supplied by duct 15 and discharged at 17, each channel 8 having its own control valve 28. The quencher extension of the second embodiment (Fig. 4) is likewise externally cooled. If, in addition to quenching, scrubbing of the gas is desired, then an excess of water is introduced through members 10 and 12, conventional means (not shown) being provided for separating the gas, leaving via outlet 20, from either water vapour alone or from water vapour and excess water with entrained particles therein. Any other suitable coolant may be used.
Patent GB-604752-A (GB)
Title: Improvements in composite panels and wall structures
IPC: B64C1/00
Filed: 1944-10-13
Abstract: 604,752. Compound sheet materials. BENDIX AVIATION CORPORATION. Oct. 13 1944. Nos. 19851 and 19852. Convention dates. June 23, 1943, and Sept. 13. 1943. [Class 140] [Also in Group XXXIII] Panels, wall structures, &c. particularly of irregular curvature as for parts of wings, fuselage, rudder &c. of aircraft, comprise metal strips .20 bent to a wavy form with their apices secured together to produce a honeycomb structure and a pair of bracing sheets of thermo-setting plastic extending across and bonded to the opposite faces of the honeycomb. Fibrous or other fillers and canvas or other textile reinforcement, may be included and a smooth covering also of plastic may be applied to both faces. Or plastic material may be contained within the cells and a bracing sheet bonded to it. To secure fittings to a wall structure sheet metal stampings may be spot welded between two of the strips forming the mesh or bent over to embrace the sides of an opening and have an apertured dished portion receiving the head' of a bolt. The edges of two walls may be sealed by a plastic edge member. The material may form frame, bracing, beam, rib and web members. In a modification a grille formed of undulated strips is placed on a template over. a stretched fabric impregnated with a thermo-setting resin which is caused to extrude beneath the grille walls, a second fabric sheet being held under tension over the grille and the assembly subjected to low pressure and heat. A plastic finishing coat preferably comprises a resin-impregnated wood pulp and is cured by subjecting the panel to a pressure of 2-10 lbs. per square inch at temperatures of 300- 350‹F. Specification 515,267, [Group XXXIII], is referred to.
Patent GB-445163-A (GB)
Title: Improvements in or relating to the manufacture of compound sheet material consisting mainly of wood
IPC: B27D1/04
Filed: 1934-09-26
Abstract: 445,163. Compound sheet materials. SAMSONOW, A. DE, 49, Avenue Leopold Wiener, Watermael-Boitsfort, Belgium. Sept. 26, 1934, No. 19856/35. Convention date, Sept. 27, 1933. Divided out of 444,893, [Group XXIII]. [Class 140] A compound sheet material suitable for aeroplane propellers or carlings is made by hot-pressing superposed layers of wood veneer with interposed layers of woven fabric coated or impregnated with a heat-hardening artificial resin at a pressure of the order of 200 kgms. per square centimetre and temperature about 120-145‹ C. The assembly to be hot-pressed may consist of beechwood or birchwood veneers and interposed linen or jute fabric layers, and alternate layers of wood may have the fibres in warp and weft direction.
Patent GB-461243-A (GB)
Title: Improvements in chuck operating keys
IPC: B25B33/00
Filed: 1935-07-12
Abstract: 461,243. Chucks. STONER, A. M. July 12, 1935, No. 19889. [Class 83 (iii)] The hand grip 13 of a key 12 for operating the jaw closing sleeve 6 of a drill chuck is of a length to receive all four fingers of the hand and has a rela. tively short thumb rest 14 at the other side of the key stem.
Patent GB-314895-A (GB)
Title: Pressure-producing means for presses, clutches and other purposes
IPC: F16D15/00
Filed: 1929-06-28
Abstract: 314,895. Delieuvin, M. P. A., and Prompt, L. L. J. July 4, 1928, [Convention date]. Presses, mechanical.-A device for causing an effort applied at a single point to produce uniform and simultaneous pressure at several points on a given horizontal, vertical, or other surface or surfaces comprises a circular row of contacting balls, tapered or other rollers, &c., disposed and guided in a plane parallel to the surface to be pressed, and actuating-means adapted to force the balls &c. together, whereby certain of the balls &c., which are uniformly spaced and set out to one side of the plane of the rest, are further squeezed out and caused to exert pressure on a movable member. The device is described as applied to a press for operating on a disc, packing-member, &c. 1 between fixed and moving blocks 3, 2. Grooves 9, 9<a> in superposed members 6, 7 define an annular guide for balls 10, and the offset balls 12 - - 12<e>, which may be of a different diameter, lie in arcuate slots 11 in the member 7 and bear on a spring-returned flanged sleeve 5, slidable in the members 6, 7. On advancing a screw 14 by a lever, hand-wheel, or other means, the spherical or ovoid end 13 causes progressively diminishing displacement of the balls 10 on either side and uniform extrusion of the balls 12 - - 12<e>, ball 10<e> remaining stationary. Alternatively, one of the adjacent balls, say 10<a>, may be stationary, the other 10<b>, being acted on by a tangential screw. The screw 14 may be arranged vertically or otherwise, and may be replaced by a mechanically, electrically, pneumatically, or hydraulically actuated plunger, with or without a ball, or by any other means for displacing the balls 10.
Patent GB-506970-A (GB)
Title: Improvements in torsional vibration dampers
IPC: F16F15/16
Filed: 1938-07-05
Abstract: 506,970. Flywheels. AKTIEBOLAGET ATLAS-DIESEL. July 5, 1938, No. 19931. Convention date, Jan. 29. [Class 122 (i)] [Also in Group XXXII] In a torsional vibration-damper, in which one or more inertia masses are movable between stops formed by liquid quantities enclosed in spaces between a vibratory part and the inertia mass, the space or spaces temporarily not exposed to the force of the inertia mass during the operation of the damper is put into communication with a supply and a discharge for the liquid, the discharge leading to the outside of the damper, so that through flowing of the liquid takes place in the space. As shown a shaft 1 has attached thereto a collar 2 with vanes 3 forming pistons in an oscillatory damping mass comprising a ring 7 and cheek plates 4, 5, Fig. 2. The ring is recessed to receive the pistons, chambers 10, 11 being formed between the ends of the piston and recess which contain oil to absorb shock either by a direct shock due to compression of the onclosed oil or by graduated shock due to throttling. Oil is supplied by a pump through an axial bore 12, radial duct 14, perforated sleeve 17, annular space 16 and ducts 20, 21 to recesses 22, 23. When the ring 7 moves clockwise due to vibration, ports 29, 31 are opened and the oil flows through the chamber 11 and leaks away through an orifice 39 in a duct 37. On rebound of the ring oil flows back through recess 23, ducts 21, 20 and recess 22 to chamber 10. The ports 28, 29, 40 and 41 may be provided with a sharp cut off or be graduated to produce a throttling effect on the liquid. Air or gas in the liquid may escape through orifices 42, 43 in a duct 15 or annular space 16 respectively before it reaches the chambers and any air in the chambers escapes, when the port 40 or 41 is uncovered, through orifices 38 or 39 respectively due to the effect of centrifugal force which impels the liquid outwardly in the chambers 10, 11 and leaves the air or gas nearer the axial centre.. Stop bolts 44 are inserted in the chambers 10, 11 to prevent excessive movement of the ring when the shaft begins to rotate. In a modification the chambers may be supplied through separate ducts 14, 16. Specifications 447,188 and 499,405 are referred to.
Patent GB-1300663-A (GB)
Title: Circuit arrangements including signal-sampling gates
IPC: G01S13/70
Filed: 1970-04-27
Abstract: 1300663 Pulse radar TELEFONAKTIEBOLAGET L M ERICSSON 27 April 1970 [25 April 1969] 20175/70 Heading H4D In a circuit arrangement comprising two gates having a common input, timing means arranged to cause one of the gates to shut and the other to open at a particular time determined by information stored in the timing means, means arranged to detect the two parts of a signal applied to the common input which pass the respective gates, effect a subtraction between them and alter accordingly the stored information and hence the next particular time, it is arranged that the opening and closing function of the gates is interchanged, the polarity of the subtraction being changed correspondingly. The invention is applied to a known automatic-ranging pulse radar utilizing contiguous distance gates; the gates are switched periodically such that a given gate acts as the "early" gate and later as the "late" gate, and vice-versa for the other gate. The effect of differences in characteristics of the gates in thereby reduced.
Patent GB-501890-A (GB)
Title: Improvements in rectifiers for ultra-short waves
IPC: H03D1/16
Filed: 1938-07-07
Abstract: 501,890. Valve circuits for wireless reception. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 7, 1938, No. 20194. Convention date, July 10, 1937. [Class 40 (v)] Ultra-short waves are rectified by applying them to the anode 3 of a valve having at least two grids, the anode being at negative or slightly-positive potential, one grid 5 being connected to the cathode through a circuit 11, 12 presenting a high-impedance to the rectified oscillations, and a second grid 4 between the first grid and the anode being positively biassed. The rectified signals may be taken off from resistance 11 through a coupling condenser 13 or may be amplified by elements 4 .. 6 and taken off from grid 4. The invention may be applied to the mixing tube of a superheterodyne receiver, Fig. 4, the signal and local oscillation frequencies being supplied through tuned circuits 16, 17, in the anode circuit, and a tuned circuit 18 tuned to the intermediate frequency being connected between grid 5 and the cathode. Alternatively, one of the circuits 16, 17 may be connected to grid 5 in series with circuit 18.
Patent GB-243437-A (GB)
Title: Improvements in or relating to the production of strip material for printing forms
IPC: B41B5/12
Filed: 1924-08-27
Abstract: 243,437. Lanston Monotype Corporation, Ltd., (Lanston Monotype Machine Co.). Aug. 27, 1924. Moulds for type-casting machines. Relates to machines for casting typographical elements in the form of a fused strip, more particularly of I-section for use in " Multigraph " or like printing-machines. The mould comprises a channelled base member 13, Fig. 5, having an opening 16 to allow the metal-pot nozzle 60 to seat on a removable nozzle-plate 17. Upon the nozzle-plate rest two rebated type-blocks 19, 20, which form the sides of the mould, and receive between them a sliding mould-blade 21, Fig. 4, of corresponding form. The type-blocks are adjustable laterally by means of screwed plungers 24. Upon the type-blocks rest matrix-blocks 25, 26 having a cut-out portion to receive and guide a matrix 28. Lugs 29, 30 on the matrix-blocks are engaged by hooked portions on a matrix-, clamp 31, which is provided with a screw 32 for forming the matrix down on to the type-blocks. The mould-blade 21, Fig. 4, is secured to its carrier 37 by means of a lug 46, which fits a square aperture in the carrier. The carrier slides in a passage formed between the matrix-blocks, which are separated by distance-pieces 36<1>. The mould is cooled by means of waterways 47. the ends of which register with ports in the machine base 11. A friction clamp for gripping the ejected strip is located in a channelled block 51, and comprises a spring-pressed plunger and a cooperating abutment. Metal-pots. - The nozzle 60, Fig. 6, of the metal-pot has a central bore 61 terminating in angular branches 63, 64, so that the metal issuing from one branch washes against the previouslycast section in order to ensure fusion, whilst the metal from the other branch fills the rear of the mould. The nozzle has a vent 70, Fig. 8, which is partially closed by a plug 72, in order to facilitate the escape of air from the mould.
Patent GB-1499854-A (GB)
Title: Carton and blanks therefor
IPC: B65D5/70
Filed: 1976-06-11
Abstract: 1499854 Cartons METAL BOX Ltd 11 June 1976 [14 May 1975] 20245/75 Heading B8P A carton is formed from a blank having a pair of wider panels 16, 18, a pair of narrower panels 15, 17 and end flaps 24A, 24B, 25A, 25B borne by at least the wider panels 16, 18, a line of weakness being formed across one of the narrower panels 17 and adjacent portions of the wider panels 16, 18 and thence along the end flaps 24A, 25A to define in the erected carton a tear-off portion. The line of weakness may include a perforated portion 40 and portions defined by cuts 30, 31 in the superimposed panels 24A, 25A, or may be defined entirely by cuts or perforations. The narrower panels 15, 17 preferably also have end flaps 22A, 22B, 23A, 23B, and cuts 34, 39 may be provided to enable the flaps 22B, 23B, 24B, 22A, 23A, 24A, to interlock at an intermediate stage in erection, prior to turning down and gluing the flaps 25A, 25B and a glue flap 19. Alternatively (not shown), the cuts 34, 39 may be absent, the flaps being joined on erection solely by gluing.
Patent GB-733152-A (GB)
Title: Improvements in or relating to mixers for steam heating systems
Inventor: REISS AUGUST
IPC: F24D1/00
Filed: 1951-08-28
Abstract: 733,152. Valves. REISS ENGINEERING CO., Ltd. Aug. 5, 1952 [Aug. 28, 1951], No. 20260/51. Class 135. [Also in Groups XIII and XXVIII] A mixer for mixing steam for a steam heating system comprises a casing I divided by an apertured partition 2 into two chambers 3, 4 each having a steam inlet 5 or 7 and one having an outlet 6 for mixed steam, and two steam valves 14, 15, one for each chamber, mounted on and controllable by a common spindle 12. A member 18 moved by the spindle opens one of the valves only when the other has been opened by a predetermined amount. A duct 11 extends from one valve 15 towards the outlet 6 so that the steam flow from one inlet 7 applies suction to the steam from the other. The valve 14 is fixed to, and the valve 15 is slidable on, the spindle 12. The spindle is screw-threaded into the end of the casing. The member 18 is adjustable on the spindle, and opens the valve 15 when the valve 14 has been fully opened. In a modification, the spindle is rotatable without longitudinal movement, and the valve 14 and abutment 18 are screwthreaded on it but cannot rotate. A wheelshaped indicator 21 fixed to the spindle 12 co-operates with a scale 22.
Patent GB-853562-A (GB)
Title: Apparatus for applying a fine powder layer to a moving supporting surface
IPC: B29D7/01
Filed: 1958-06-25
Abstract: 853,562. Moulding battery separators. ACCUMULATOREN-FABRIK A.G. June 25, 1958 [June 29, 1957], No. 20321/58. Class 87(2). A layer of very fine powder, e.g. for sintering to produce porous battery separator plates, is supplied onto a moving supporting surface and evenly distributed thereon by a polished roller having a peripheral speed less-than the speed of said surface. Fine powder is supplied from a system of hoppers 1, 5 onto a supporting surface 3 moving as shown; the lower edge 7 of hopper 5 acting as a baffle wall. A vertically adjustable polished roller 10 is disposed at a minimum distance d above surface 3 beyond a space 9 in which powder accumulates and is rotated so that the peripheral velocity at the lowest point of the roller is in the same direction as but at least 3% less in magnitude than the linear velocity of surface 3. The difference in velocities may be adjusted. In the embodiment of Fig. 2 (not shown), the surface 3 which may be of paper is supported on a counter roller.
Patent GB-385341-A (GB)
Title: Improvements in or relating to photometers or exposure meters for photographic purposes
IPC: C07C35/30
Filed: 1931-07-15
Abstract: 385,341. Exposure meters. TÍNNIES, H. F., 18, Schenkendorfstrasse, Gross- Flottbek, Altona, Germany. July 15, 1931, No. 20359. Convention date, Sept. 29, 1930. [Classes 97 (i) and 98 (i).] In a meter having a graded series of opacities with exposure signs or markings thereon, the observation field is limited to three signs which are relatively darkened so that one outer sign is easily perceptible, the other is just not visible, whilst the centre sign is perceptible with difficulty. The relative darkening of the signs is such that one sign is always darkened to substantially twice the extent of the next succeeding one. In one construction there are three graded signs a, b, c, Fig. 6, in the field of view which may be relatively darkened as by means of a diaphragm. In another construction a series of graded opacities are peripherally arranged on a disc 8, Fig. 4, carried by a rotatable tube 6. A transparent disc 7 carries a series of exposure time markings, and a cover diffusing disc 9 and transparent protecting disc 10 are also fitted in the tube. An observation window 2 in the end closure 1 of an inner tube 5 limits the view through the focusing eyepiece tube 3 to three markings, Fig. 1. In a modification the centre marking may be covered so that only the two outer markings 14, 15, Fig. 9, are visible. The tube 5 may carry a rotatable ring 11 graduated on one side with a platespeed scale and on the other side with a diaphragm scale. This ring is adjustable with respect to a fixed mark on the tube 5 and to an exposure scale on a ring 12 fixed on the tube 6. The graded series of opacities may be formed by a series of superimposed discs 20, 21, 24, Fig. 7 (not shown), having increasing segmental apertures. As the eye sensitivity to differences of light is less in bright light than in dark surroundings the opacity of the successive discs increases progressively so that the relative darkening of the signs is such that one sign is always darkened to twice the extent of the next succeeding one.
Patent GB-900610-A (GB)
Title: Improvements in or relating to apparatus for automatically and sequentially feeding articles to be weighed to a weighing apparatus
Inventor: FLETCHER LAWRENCE ALFRED
IPC: G01G21/00
Filed: 1958-06-25
Abstract: 900,610. Sorting by weight. AUTOMA ENGINEERING GROUP Ltd. Sept. 10, 1959 [June 25, 1958], No. 20376/58. Class 143. [Also in Group XXX] Articles are automatically transferred one at a time from a station such as the magazine 12 to a weighing machine by mechanism comprising a pair of feed arms 13 provided with gripping fingers 16, the arms being continuously oscillated about an axis 27, and the gripping fingers 16 being operated at the appropriate point in each cycle of oscillation of the arms provided that an article is then actually present in the magazine in position for transfer. The arms are oscillated in phase by a crank 20 driven by an eccentric 19, and their gripping fingers are actuated by rotation of the operative end of each arm about its longitudinal axis. During the feeding half cycle of each oscillation of the arms, a cam 21 rotated with the eccentric 19 closes a micro-switch MS5 to energize a relay C ( Fig. 3). A contact (not shown) of relay C energizes a reversible motor 17 which through gearing 18, 18a operates the gripping fingers of both arms simultaneously. Should no article be present in the magazine when MS5 closes, relay D remains unenergized and its contact d2 ensures rotation of the motor so as to retract the arms into a position, limited by a stop, in which no gripping occurs. The first of a series of articles conveyed to the machine closes a micro-switch MS4 and when two articles are present as shown in the magazine proper the next article to arrive closes a switch MS3. The closure of both the switches is taken to indicate that the first article is in the correct position for transfer so that the closure of MS5 can energize relay D whose contacts d2 change over to cause rotation of the motor in such a dir3ction that the article is gripped. A normally made switch MS6 is broken by the cam 21 just after MS5 makes so as to prevent belated action of the grippers if MS4 closes after the arms have moved beyond the article, a hold-in contact d1 keeping the relay energized until MS5 breaks. Each article thus transferred to the platform 14 of the weighers is subsequently discharged on to a pivoted support 22 from which it normally passes to a take-off conveyer 26. Should an article be of incorrect weight, a signal provided by the weigher 15 is made to energize a solenoid 24 which acts to tilt the support 22 to reject the article. Specification 900,609 is referred to.