baber/WOPTO huggingface dataset:
Patent GB-680271-A (GB)
Title: Improvements relating to the recovery of polycyclic aromatic compounds from mixturescontaining the same
Filed: 1950-11-09
Abstract: Fused polycyclic aromatic compounds, homologues and substituted derivatives thereof are recovered from mixtures containing such compounds by treatment with tetrahalophthalic anhydride to form a complex which is separated and decomposed. Naphthalene compounds may thus be separated from monocyclic aromatics and alkylated monocyclic aromatics obtained from thermal or catalytic cracking.  The complex is easily separated being substantially insoluble in hydrocarbons and is usually effected below 150 DEG  F., e.g. 50-125 DEG  F.  The complex is decomposed either by heating above 200 DEG  F., e.g. 250-500 DEG  F., optionally in the presence of a solvent, e.g. naphtha, or with dil. aqueous caustic at above 50 DEG  F., e.g. 75-125 DEG  F.  Steam at over 300 DEG  F. may also be used for decomposition.  The chloro-, bromo-, iodo- and fluoro-anhydrides are specified, the chloro-derivative normally being used.  Anthracene, phenanthrene, methylnaphthalene, ethylphenanthrene, a -chloronaphthalene, naphthol and anthraquinone form complexes and may be separated from heterocyclics, fused heterocyclics, aliphatics and monocyclic aromatics or homologues thereof.  Treatment is effected at above 300 DEG  F., preferably at 325-400 DEG  F. and the complex precipitated on cooling to 50-150 DEG  F., by slurrying at atmospheric temperature, or by contacting with a saturated solution of anhydride in a solvent such as acetone.  After separation, the complex is desirably washed, e.g. with pentane.  Anhydride obtained from the decomposition of the complex may be recycled although if aqueous caustic decomposition is used the anhydride must be reformed from the corresponding salt formed in the decomposition, e.g. by heating the acid liberated on treating the aqueous solution with concentrated acids such as hydrochloric acid.  In an illustration, naphthalenes are recovered from a cracked distillate by the use of tetrachlorophthalic anhydride and three examples are also given of this process, complex decomposition with steam and aqueous caustic soda being illustrated.
Patent GB-1118736-A (GB)
Title: Production of solutions of segmented linear polymers containing urethane and urea linkages
IPC: C08G18/48
Filed: 1965-06-29
Abstract: Segmented linear polymers containing urethane and urea groups are prepared in solution by first preparing a macrodiisocyanate by reacting an aliphatic or aromatic diisocyanate with a polyether, polyester or polyester-ether having 2 terminal -OH groups, a MW. of 600 to 12,000 and a M.P. below 50 DEG  C. in a mole ratio of diisocyanate to hydroxyl terminated polymer of at least 1.3:1, removing from the reaction product containing the macrodiisocyanate at least 40% of the unreacted diisocyanate and then reacting the macrodiisocyanate and any remaining diisocyanate with an aliphatic or aromatic diamine or with a mixture of diamine and water in a solvent which is also a solvent for the segmented polymer to be formed, the total ratio of -NH2 radicals, including those formed by reaction of water with isocyanate radicals, to remaining -NCO radicals between 0.7:1 to less than 1:1.  The unreacted diisocyanate is removed suitably by extraction with a solvent which is not a solvent for the macrodiisocyanate or by distillation.  Most preferably all the unreacted diisocyanate is removed.  Solvents suitable for use in the extraction process are hexane, heptane, cyclohexane, propylene carbonate and acetonitrile. Conventional polyethers, polyesters and polyester-ethers may be used.  The preferred diisocyanates are m- and p-xylylene diisocyanate and the preferred diamines are m- and p-xylylene diamine and alkylene diamines containing 2 to 17 carbon atoms.  Preferred solvents for the segmented polymer are N,N-dimethylacetamide and N,N-dimethylformamide.  The polymer-containing solutions may be spun or cast into filaments and films.
Patent GB-390223-A (GB)
Title: Improvements in or relating to sound reproducing devices such as loud-speakers
IPC: H04R9/02
Filed: 1931-10-05
Abstract: 390,223. Magnets. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, AULT, L. B., Allesley View, Allesley Old Road, and STACE, A. T., 2, Poulteney Road, Radford Estate, both in Coventry. Oct. 5, 1931, No. 27631. [Class 35.] Relates to loudspeakers or the like of the type having a moving. coil and a permanent field magnet comprising two or more arms radiating from one end of a stem and co-operating. with the other end of the stem to form an annular air gap. According to the invention, the arms are so formed as to provide a recess which accommodates a dished or conical diaphragm, to which the actuating coil is attached, the diaphragm lying in the space bounded by the walls of the recess and a plane containing the outer edges of the recess, but being wholly without the magnetic circuit. In the construction shown in Fig. 1, four cobalt steel arms 2 radiate from the rear of, a central polepiece 3, and bend forward to form a seating for a ring 5 to'which a conical diaphragm 6 is attached. The arms are doubled back at the seating towards the polepiece 3, and flatten out into a continuous ring which supports an outer circular polepiece 1. The diaphragm is located as shown in the recess formed by the magnet arms. A non-magnetic ring 4 is provided between the polepieces. Fig. 3 shows a modification in which. the magnet comprises a U-shaped bar 3 of cobalt steel &c., a strip 1 of soft iron forming the outer polepiece, and being bent as shown to form a recess in which the diaphragm 6 is located.. The diaphragm is secured to the ends of the polepiece 1 by a clamping ring 7 an d segmental strips 9 screwed to the ring.
Patent GB-1366483-A (GB)
Title: Cleaning of vehicle screens
IPC: B60S1/48
Filed: 1971-09-07
Abstract: 1366483 Windscreen cleaning systems OTTER CONTROLS Ltd and J C TAYLOR 7 Sept 1971 [8 June 1970] 27657/70 Heading A4F A vehicle windscreen cleaning apparatus comprises an electric washer pump motor 4, an electric wiper motor, a manually operable switch 5 controlling the motor 4, and a heater for a temperature sensitive element 3, which, a predetermined delay period after the heater is energized, closes a switch 8, 9, 10, controlling the wiper motor and re-opening when the heater is de-energized. The element 3 is bi-metallic and heated by current passing therethrough and by an auxiliary heater 11, or alternatively by a single heating element 211 Fig.2 (not shown). The wiper motor is energized on closure of the switch 8, 9, 10, or alternatively is energized simultaneously with the washer motor 4 if a conductor 12 is provided connecting the switch 5 and the wiper motor. The switch 8, 9, 10 opens with a delay after the opening of the switch 5, during which delay the wiper motor continues to operate whilst the washer motor 4 is de-energized. An independent manually operated wiper switch is provided whereby the wiper motor may be operated at either of two speeds without operation of the washer.
Patent GB-968641-A (GB)
Title: Improvements in or relating to measuring apparatus having a spring deflected by a force on a mass
IPC: G01G23/06
Filed: 1962-07-18
Abstract: 968,641. Weighing apparatus; accelerometers. WAYNE KERR LABORATORIES, and P. A. STOCK. July 17, 1963 [July 18, 1962], No. 27658/62. Headings G1K and G1W. Relates to damping means to reduce the oscillation of a spring balance. The damping means is connected in series with the spring and is of a non- resilient material such as sponge rubber which will absorb kinetic energy and not release it again as mechanical energy. In Fig. 1 the damping means 16 is connected between the spring and a suspending structure 15. Alternatively it may be between the spring and a load suspended from it (Fig. 2 not shown), or there may be a layer of damping material over a scale pan (Fig. 3 not shown). The arrangement of the damping means for bench mounted spring balances is described (Figs. 3, 4, 5, not shown). The spring balance may be associated with weighing or it may be in an accelerometer.
Patent GB-654291-A (GB)
Title: Improvements relating to the coating of articles with plastic material
IPC: B29C48/151
Filed: 1947-01-27
Abstract: 654,291. Coating metallic articles by extrusion. DEKORON CORPORATION. Jan. 27, 1947, No. 27686/49. Divided out of 654,245, [Group XXVIII]. [Class 87 (ii)] A rigid metallic tube or rod 11 is coated with plastic material 10, e.g. cellulose acetate, by extruding the material in tubular form 24 through a die 20 whilst the tube &c. 11 is moved through the die at a rate faster than the flow of material from the die, whereby the material is stretched as it is applied to the tube &c. The tube &c. is spaced from the material where the latter leaves the die. The coated tube &c. may be used as a stanchion or supporting-rod in transportation vehicles. Specification 654,245, [Group XXVIII], is referred to.
Patent GB-1469319-A (GB)
Title: Transporting of coal-liquid slurries
IPC: C10L1/32
Filed: 1974-06-21
Abstract: 1469319 Coal slurries MARATHON OIL CO 21 June 1974 [5 July 1973] 27720/74 Heading C5G Coal is transported as a slurry in a carrier medium by grinding the coal to an average diameter of less than 150 microns such that at least 95% of the coal will pass through a 14 Tyler mesh screen, heating the ground coal to at least 150‹ C. for a sufficient time to remove at least 40 wt. per cent of the "bound" water content of the coal, slurrying the dry, ground coal in the carrier medium to a concentration of 5-90 wt. per cent of the coal and therafter transporting the slurry. At least 70 wt. per cent of the "free" water may be removed before grinding. The carrier medium may be water, crude oil, refined fractions thereof, e.g. gasoline, and jet fuel or partially refined fractions thereof, e.g. gasoline, gas oils, naphthas, and kerosene. After grinding and drying, but before slurrying, the coal may be pelletized or otherwise agglomerated. Surfactants may be present in the slurry. In the ease of an organic carrier medium, these may impart oleophobic or oleophilic properties to the coal, e.g. fatty acids, monovalent cation salts thereof, sorbitan monooleate or petroleum sulphonates. In the case of an aqueous carrier medium, the surfactant may impart hydrophilic or hydrophobic properties to the coal. The slurry may also contain chemical agents facilitating suspension of the coal particles, e.g. high molecular weight polymers. Viscosity-reducing and drag-reducing agents may also be present. The coal particles may be coated with gases, e.g. air, hydrocarbons containing up to 4 C atoms and natural gas or solid materials, e.g. inorganic and/or organic salts of the metals of groups II, III, IVa, V, VI, VII and VIII of the Mendeleef Periodic Table, synthetic resins, e.g. cellulose acetate, polystyrene, polyethylene, and polyvinylacetate, clay, kaolin, fuller's earth, other aluminium silicates, and limestone.
Patent GB-767932-A (GB)
Title: Improvements in, or relating to, shock absorbers
IPC: F16F9/22
Filed: 1951-11-27
Abstract: 767,932. Hydro-pneumatic shock-absorbers. TAYLOR, R. W. W. and KERMOND, V. J. Feb. 27, 1953 [Nov. 27, 1951], No. 27737/51. Class 108(3). The invention relates to shock absorbers of the kind comprising a larger-diameter liquid-filled cylinder 2, in telescopic relation with a smaller-diameter cylinder 1 in which is slidable a piston 17 subject to compressed air on its face remote from the cylinder 2, a valve 16 permitting free flow from the cylinder 2 to the cylinder 1 and restricting flow from the cylinder 1 to the cylinder 2. According to the invention, the valve 16 is provided in the inner end of the cylinder 1, the piston 17 is unperforate, and a rod 10 rigid with the cylinder 2, is anchored to the piston 17. Liquid displaced from the cylinder 2 by entry of the cylinder 1, acts on a spring- loaded piston 12 within the piston rod 10. The compressed air in the cylinder 1 is in a flexible container 21. The latter is connected at 22 to a pump, a relief valve for bleeding off air pressure, and a pressure gauge. If the shock absorber is on a vehicle suspension, the pump, relief valve, and gauge, are disposed adjacent the driver. Where a number of shock absorbers are used, each pipe 22 may be connected to a common flexible container loaded by a hydraulic ram. The ram fluid may be controlled by a pump and relief valve to alter the loading of the container and thus the loading of each shock absorber. According to the Provisional Specification, ports may be formed in the wall of the cylinder 1. These ports are at the lower end, and are positioned so that they can never pass beyond the gland 7. They permit free flow of liquid from the cylinder 1 to the cylinder 2 on the 'rebound stroke, until the ports are cut off by the piston 17.
Patent GB-628791-A (GB)
Title: Improvements in and relating to electric incandescent lamps
IPC: H01K1/24
Filed: 1947-10-16
Abstract: 628,791. Electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 16, 1947, No. 27768. Convention date, Oct. 19, 1946. [Class 39(ii)] In a tubular lamp of the kind provided with a cap and lead-in wires at one end only, a lead-in wire 7 of angular section is continued by a straight elongated length 8 which extends adjacent to the inside wall of the bulb 1 and at the end remote from the cap is curved inwardly into a semicircular loop 9 for the attachment of one end of the filament 11 which is connected to the lead-in wire 4 at the other end, the whole arrangement being held against lateral displacement by a flexed resilient finger 15 which is spot welded or otherwise secured at one end to the looped extremity 9 of the lead-in wire. Along its length the filament is supported by anchor wires 12 mounted in glass beads 13 fusion-sealed to the section 8 of lead-in wire.
Patent GB-1339378-A (GB)
Title: Phenylhydrazonoimidazoleinines processes for their preparation and their fungicidal and bactericidal use
IPC: C07D233/96
Filed: 1972-06-14
Abstract: 1339378 2-Substituted phenylhydrazonoimidazolenines BAYER AG 14 June 1972 [15 June 1971 9 Oct 1971] 27817/72 Heading C2C The invention comprises 2-substituted phenylhydrazonoimidazolenines of general Formula I in which R is a C 1 -C 16  alkyl group; R<SP>1</SP> is hydrogen or an alkylcarbonyl, alkoxycarbonyl, arylcarbonyl, aryloxycarbonyl, alkylsulphonyl or a substituted or unsubstituted arylsulphonyl group; X is chlorine or an alkyl, haloalkyl, alkoxy, alkylthio, alkylamino or dialkylamino group or, when R is not a methyl group, a hydrogen atom; Y is chlorine, hydrogen or a nitro or alkyl group and m and n may each be 1 or 2. These may be prepared (a) by reacting an imidazole of Formula II with a diazonium salt of Formula III in the presence of an acid binding agent and optionally a diluent, e.g. water, or (b) reacting a phenyl-hydrazono-imidazolenine salt of Formula IV with either an acid chloride of Formula V, a chloroformic acid ester of Formula VI or a sulphonic acid ester chloride of Formula VII in which R<SP>11</SP> is an alkyl or aryl group, preferably in the presence of an inert organic solvent. Pesticidal activity against fungi or bacteria is shown by compounds of Formula I either alone or in admixture with a diluent or carrier.
Patent GB-746674-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B13/20
Filed: 1953-10-09
Abstract: 746,674. Photographic cameras with Interchangeable objectives and range- and/or viewfinders. LEITZ GES., E. Oct. 9, 1953 [Oct. 9, 1952], No. 27843/53. Classes 97 (1) and 98 (1). In a camera having interchangeable objectives of different focal lengths wherein each objective carries a device which, on securing the objective to the camera body engages with and moves automatically an actuating means which sets an interchanging means to render visible in a range- and/or view-finder the appropriate one of two or more sets of field border lines, manually operable means are provided for actuating the interchanging means to render visible in the finder any one of the sets of border lines at will, thereby facilitating the selection of a focal length suited for taking the subject. In a camera having a coincidence type short home base rangefinder of the kind involving one reflected beam from a window 6 and a direct beam from a window and coupled to the camera lens focusing mount 9, the coincidenceproducing member of the rangefinder being either the base-defining reflector 19b (Fig. 4), or a lens 19a in the reflected beam (Fig. 2), an opaque plate 16 having a transparent central aperture 16b for the reflected beam and two rectangular transparent frames 16a is mounted behind a window 7 so as to be viewed by reflection in the rhomb prism 12 and is movable diagonally between guides 21 against a return spring 22 by the rangefinder controlling lever 24 engaging a lug 23 on the frame of the plate. On applying a chosen interchangeable lens to the camera, a lug on the lens mount which lug may be one of the securing bayonet joint lugs displaces against spring action through a spring-urged slide a rod 35 having a slotted arm 34 engaging an upstanding finger 32 on a mask 17 pin-and-slot mounted on the plate 16 for movement diagonally across it whereby framing slits 17a in the mask register with one or other of the transparent frames 16a in the plate 16, the mask 17 having an aperture 17b large enough not to obscure the aperture 16b. To determine which lens is most suitable, the mask 17 may be displaceable by rotation against a return coil spring of a knob 8 on a shaft bearing face cams 51, 52 struck out from a disc 50 and adapted to bear against shoulders 35b, 35c respectively on the rod 35. When the objective is removed, the spring-loaded members of the rangefinder are locked by the rod 35 entering a recess in the disc 50. In a modification, (Fig. 7, not shown), the plate 16 and mask 17 are replaced by a pivoted sector carrying masks of different sizes in front of the window 5, a rack on an arm carried by the rod 35 engaging a pinion secured coaxially to the sector. In another embodiment (Fig. 8, not shown), the slide engaged by the lens mount lug directly adjusts the view-finder mask and manual operation of the mask is effected by limited manual rotation of the lens mount on depressing a latch locking the mount. Instead of the framing slits being on flat plutes they may be on one or more drums. Specification 695,397 is referred to.
Patent GB-288497-A (GB)
Title: Improvements in and relating to stringed musical instruments
IPC: G10D1/06
Filed: 1927-10-20
Abstract: 288,497. Charlston, M. M. Oct. 20, 1927. Mandolins, etc.; sound-posts.-A mandolin or the like has the front 27 and the apertured back 26 secured over both longitudinal and transverse arched' bars as 34, 20, and 24, 23. The longitudinal bars are secured to the thickened end 15 of the neck, and to a. block 16. The transverse bars are mortised into the longitudinal bars and are secured to wedge-sectioned corner strips running between the side 30 and the back and front. Two sound-posts 31, 32 are provided, one having its ends forked.
Patent GB-1171363-A (GB)
Title: An improved Fastener
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16B5/06
Filed: 1967-06-16
Abstract: 1,171,363. Spring clips. F. T. PRODUCTS Ltd. 7 June, 1968 [16 June, 1967], No. 28001/67. Addition to 1030796. Heading E2B. A resilient fastener generally of U-shape comprises a web 11 and two outwardly elbowed limbs 12, 13 each limb having an inwardly and rearwardly directed tongue 18, 19 and between the tongue and the web a pair of inwardly directed projections 24 which are spaced along the length of the limb. In the construction shown each of said pairs of projections comprises a pair of prongs in a side edge of the limb and each side edge of each limb has such a pair of prongs. The fastener enables a pair of panels 27, 28 to be connected to a T-shaped beam as shown.
Patent GB-167701-A (GB)
Title: A device for tipping buckets on overhead ropeways
IPC: B61B12/02
Filed: 1920-10-02
Abstract: 167,701. Reid, M. Oct. 2, 1920. Tip-buckets.-Apparatus for the automatic tipping of buckets suspended from aerial rope ways comprises a horizontally-swinging lever mounted on a vertical pivot 1 carried by a bracket bolted to the rope. The suspension rod or hanger 6 of the bracket, in passing, moves one arm 5 of the lever from the dotted line to the full-line position shown in Fig. 1, against the action of a spring 4, and thus projects the other arm 7 into register with the lever 8 of the latching-mechanism. The movement of lever 8 is transmitted through linkage to raise the latch from the fork 14 to release the bucket.
Patent GB-870776-A (GB)
Title: Hollow blade for a gas turbine engine
IPC: F01D5/18
Filed: 1959-08-17
Abstract: 870,776. Turbine and compressor blades. CREEK, J. O. Aug. 17, 1959, No. 28042/59. Class 110 (3). A hollow blade for a gas-turbine engine comprises a shell formed from a piece of sheet metal folded about a centre line to form the leading edge of the aerofoil portion, the abutting edges being joined to form the trailing edge. The hollow interior of the blade is provided with. a pair of spaced sheet metal baffles disposed parallel to and spaced from the inner surfaces of the blade shell by means of longitudinally extending ribs integral with the blade shell on its inner surfaces, the ribs having spaced projections which extend through perforations in the baffles, the projections on the ribs on one side of the blade being secured'to corresponding projections on corresponding ribs on the other side of the blade, the baffles being secured on their surfaces adjacent the blade shell to the surfaces of the ribs between the projections. The blade shown in Fig. 1 comprises a shell 10 formed from a piece of sheet metal which is machined so as to form ribs 16 of varying heights having projections 19 thereon, the metal being subsequently bent round the edge 11 to form a convex blade surface 12 and a concave blade surface 13, the abutting edges 14 being secured together to form the trailing edge. Sheet metal baffle members 17, 18 engage against the surfaces 16a of the ribs, the projections 19 thereon projecting through apertures 20 in the baffles. The abutting surfaces of the projections 19, also the leading and trailing edges of the baffle members are subsequently secured together by brazing. In a second embodiment the baffle members 117, 118 are of corrugated form, the smaller corrugations engaging the ribs 16. The ribs 16 have projections 19 as before, the projections extending through apertures 20 in the smaller corrugations. The abutting surfaces of the projections 19 are secured together. The invention is applicable to both turbine and compressor blades of gasturbine engines.
Patent GB-1261982-A (GB)
Title: Circuit arrangement for a pulse counter
Inventor: NABIGER ERNST
IPC: H03K21/38
Filed: 1969-06-03
Abstract: 1,261,982. Reading-out and resetting counters. STARKSTROM - ANLAGENBAU KARLMARX STADT VEB. 3 June, 1969, No. 28047/69. Heading G4A. The several denominations of a counter are read-out and zeroized in turn beginning with the least significant. Counting and carry are not interfered with. As shown a two denomination binary-coded decimal counter receives input pulses from LZ. A read-out pulse at LA energizes a monostable MV3 which pulses read-out gates Tl, T2 in succession, corresponding to the units and tens denominations, with delays imposed by ND1, ND2, the values being registered in store S. Immediately after read-out, a resetting pulse at LN produces a pulse first from MV1 then from MV2 to reset the units and tens denominations in succession.