baber/WOPTO huggingface dataset:
Patent GB-276557-A (GB)
Title: Improvements in centrifugal apparatus
IPC: B01D45/12
Filed: 1927-01-15
Abstract: 276,557. Synthetic Ammonia & Nitrates, Ltd., and Humphrey, H. A. Jan. 15, 1927. Density separators. - A centrifugal separator for gases has a rotor 1 with admission ports from the hollow spindle 3; the heavier gaseous components are discharged through the hollow axle 4 and the lighter components through the flared peripheral openings 8. A baffle 6 is arranged at the centre of the rotor to ensure the outward travel of the gaseous mixture, so that it must be subject to centrifugal action before it is discharged. The part discharged through the peripheral ports travels in the casing 2 to the opening 5. The rotor walls are of graduated size and are thickest at the centre. Rotor vanes 9 are provided and the ports 8 are arranged to be as nearly tangential as possible. The apparatus is operated at a peripheral speed of not less than 600 metres per second. With high speeds and low temperature liquefaction of the gases may be effected by the pressure produced by the large centrifugal forces; to assist in achieving this object, the entering mixture may be pre-cooled and pre-compressed.
Patent GB-284317-A (GB)
Title: Method of and apparatus for drawing section bars from sheets of magnesium alloys
IPC: B21D5/06
Filed: 1928-01-13
Abstract: 284,317. I. G. Farbenindustrie Akt.- Ges. Jan. 28, 1927, [Convention date]. Drawing; drawing-dies; working at specified temperatures.-Section bars of magnesium alloys are made by drawing a sheet of the metal through skelping dies f, e while at a temperature of from 100<6> C. to 400‹ C. The initial and final dies are inclined at an angle to each other, or may be parallel, with the operative axis inclined at an angle to the die face. The dies may be arranged parallel to each other and may be mounted in a member whose inclination to the draw bench may be adjusted. Curved bars may be made by altering the mutual inclination of the dies.
Patent GB-193383-A (GB)
Title: Improvements in runners for use in foundry moulding
IPC: B22D35/04
Filed: 1923-01-15
Abstract: 193,383. Malzacher, W. Feb. 14, 1922, [Convention date]. Moulds.-Base plates for casting ingots have the runner grooves lined with sand in metal frames in place of fireclay. The frames have flanged side walls 2, Fig. 1, and a base 4 perforated to enable ramming to be effected from both top and bottom. The sand is moulded with openings 7 for the risers communicating with the runner 6. In a modification, the frames have bevelled sides 1, Fig. 5, and a fireclay block 9 is mounted in ribs 10 beneath the down gate 7. The sand may be moulded with spigot and socket ends for jointing consecutive sections. Mould materials. - The sand is preferably treated with sulphite lyes.
Patent GB-678230-A (GB)
Title: Cyclopropane carboxylic acid esters of cyclopentenolones and method of synthesizing same
IPC: C07C49/707
Filed: 1950-01-18
Abstract: The invention comprises pyrethrin analogues of the formula <FORM:0678230/IV (b)/1> where R is an aliphatic, aryl or heterocyclic radical, R1 is an aliphatic, cycloalkyl or aryl radical and R11CO is the radical of chrysanthemum monocarboxylic acid.  These are prepared by reacting a glyoxal R1.CO.CHO with a b -keto acid R.CH2.CO.CH2.COOH or salt thereof at pH 5-9, ring-closing the resultant ketone R1.CO.CHOH.CH2.CO.CH2.R with an alkali (e.g. sodium hydroxide) to form the cyclopentenolone and esterifying with chrysanthemum monocarboxylic acid or its derivatives such as the halide or anhydride.  The glyoxal R1.CO.CHO may be made by selenium dioxide oxidation of the aldehyde R1.CH2.CHO or ketone R1.CO.CH3.  The b -keto acid or salt is prepared by low-temperature hydrolysis of its ester and neutralization with carbon dioxide.  Details are p  given of the necessary experimental conditions for each step. Examples are given of the preparation of compounds where R1 is methyl and R is allyl, n-butyl, 2-butenyl, 3-butenyl, 2-isobutenyl and 2-isopentenyl; also of the compound where R is allyl and R1 is phenyl.  The hydroxydiketones form anhydrodisemicarbazones.  The cyclopentenolones are purified by conversion into their semicarbazones and regeneration from the latter.  The cyclopentenolone (R=2-butenyl, R1=methyl) is a stereoisomer of natural cinerolone and gives on hydrogenation the same dihydrocinerolone as the latter.  For esterification there may be used d-trans, dl-trans, dl-cis or mixtures of these chrysanthemum monocarboxylic acids.  Other compounds are those in which R1 is methyl and R is phenyl, benzyl, p-chlorobenzyl and furfuryl, and those in which R is allyl and R1 is isobutenyl and cyclopropyl. Other groups specified for R are methyl, ethyl, propyl, isopropyl, sec. butyl, tert. butyl, amyl, hexyl, heptyl, octyl, nonyl, dodecyl, octadecyl, substituted alkyl, vinyl, chloroallyl, propynyl, pentadienyl, alkatrienyl, naphthyl, xylyl, phenylethyl, cinnamyl, cyclopropyl, cyclopentyl, cyclohexyl, cyclopentadienyl, cyclohexenyl and thienyl.  Other groups specified for R1 are ethyl, propyl, isopropyl, butyl, amyl, octyl, decyl, heptadecyl, tolyl, xylyl, benzyl, phenylethyl, styryl, cyclohexyl and cyclopentyl, and substituted derivatives of these.
Patent GB-544567-A (GB)
Title: Angle riveter attachment
IPC: B21J15/10
Filed: 1941-02-04
Abstract: 544,567. Riveting tools. CHICAGO PNEUMATIC TOOL CO. Feb. 4, 1941, No. 1466. Convention date, March 9, 1940. [Class 124] In a riveting tool including a hammer piston 14 reciprocable within a cylinder 11, an attachment for transmitting the impacts delivered by said piston along a line extending obliquely to its line of movement comprises a curved tubular extension 21 detachable from said cylinder and having an outer end which is brought into engagement with the work by an axial movement of the cylinder and containing a train of impact-transmitting elements 32, 33 which terminate rearwardly in an anvil block 31 which is limited in its rearward movement by the cylinder which thereby absorbs the reaction of the blows delivered to the rivet, the extension 21 being rotatable and longitudinally adjustable relative to the anvil block and cylinder. An enlarged rearward portion 21a of the extension 21 is screwed on to the front end of the cylinder and is split at 23 and locked in the desired position by a clamp 25. The elements 32, 33 have barrel-shaped peripheries and and convex ends.
Patent GB-781887-A (GB)
Title: Improvements in or relating to valve amplifier circuits for phase-amplitude characteristic correction
Inventor: COOPER VICTOR JAMES
IPC: H04N9/64
Filed: 1955-01-18
Abstract: 781,887. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 28, 1955 [Jan. 18, 1955], No. 1467/55. Class 40 (6). A linear amplifier in which the phase shift is a function of signal amplitude comprises a pair of non-linear amplifiers B, C, with their outputs and inputs in parallel, one of which is preceded by a time-delay circuit E. The signal is applied to a cathode-follower Al with D.C.-restoring diode A2 in its grid circuit, which feeds amplifier B through a time-delay circuit E of variable length and attenuation, and amplifier C through a variable attenuator C8. Each amplifier comprises two stages B1, B2 and C1, C2, respectively, in cascade and each stage is provided with a cathode feedback resistor, e.g. B4, shunted with a rectifier, e.g. B5, in series with a blocking condenser, e.g. B7. Each rectifier is supplied with an adjustable bias from a potentiometer, e.g. B6, the rectifiers being oppositely poled in the two stages of each amplifier and also in the corresponding stages of the two amplifiers. A D.C. restoring diode is provided in the grid circuit of each of the stages B2, C2. The outputs are combined in a common anode resistor D1 and are fed to the output via a cathode follower D2. The arrangement is so adjusted that with zero time-delay in the circuit E the overall input/output characteristic is linear. In a modification, the amplifiers are arranged in cascade, the timedelay circuit then being connected in parallel with one of them (Fig. 2, not shown). The arrangement is more particularly intended for use in colour picture transmission, to apply correction for non-linear phase distortion produced in the modulator.
Patent GB-1337781-A (GB)
Title: Fluid operated proximity sensors
IPC: F15B5/00
Filed: 1971-01-12
Abstract: 1337781 Air gauges P L PANIGATI 12 Jan 1971 [20 Jan 1970] 1473/71 Heading G1M A bulbous air jet 11, Fig.1, of greater than normal length is obtained by supplying air through a duct 2 angled to and/or off set from an annular duct 9 provided by a tube 5 in a housing 1, Fig. 2. Ports 7 and 8 may also be provided in the tube 5 and the air flow in the annular duct 9 is swirled or given a helical path by providing baffles 20, 21 in the duct 2 and the duct 9 respectively, Figs.2a and 2b, or by providing baffles on the tube 5, Fig.2c (not shown). The tube 5 may be rotated around its axis to change the angular positions of the ports, 7, 8, with respect to the duct 2. Graphs of distance from an object against air back pressure at connector 6 are drawn on Fig.5 (not shown) for various positions of the ports 7, 8 and related to a curve (15) of a device of known type.
Patent GB-1430611-A (GB)
Title: Liquid crystal display devices
IPC: G02F1/1335
Filed: 1973-01-11
Abstract: 1430611 Signs MARCONI CO Ltd 2 Jan 1974 [11 Jan 1973] 1481/73 Heading G5C [Also in Division H4] In a liquid crystal display device of the reflective type, the mirror formed on glass substrate 6 comprises layers 1-5 of dielectric material of alternately low and high refractive index whose thicknesses are such that a reduced reflection coefficient in a given part of the spectrum is obtained for angles of incidence near normal. Each layer may have a thickness of a quarter wavelength below the lower limit of the visible spectrum. Enhanced contrast is obtained for points of view near the normal. The layers may be alternately zinc sulphide and magnesium fluoride. A nematic liquid crystal pattern 10 is placed on top of the mirror layers sandwiched between light transmitting conductive coatings 7, 9, and a glass cover 8 is provided. The device may be edge-illuminated in which case there is improved light scattering from the liquid crystal in the activated areas.
Patent GB-1100912-A (GB)
Title: Surface treatment for titanium and titanium alloys
IPC: C25D11/26
Filed: 1965-01-13
Abstract: A titanium metal or alloy surface is treated by (1) contacting it with an aqueous electrolyte solution having an electrical conductivity equivalent to that of H2SO4 solution of between 1.8 and 5.4 molar and simultaneously passing D.C. through the surface as anode and solution at a voltage between 30 and 60 volts for a period e.g. 5-60 mins. sufficient to build up a surface oxide coating which causes a drop in current, (2) rinsing the surface clean with mineral-free water, (3) anodizing as in (1) but using a solution having conductivity equivalent to that of H2SO4 solution of between 0.009 and 0.027 molar and a voltage between 95 and 110 volts to build up a second layer of oxide coating, and (4) again rinsing as in (2). The tank holding the electrolyte may be made the cathode.  The oxide coating may form a matrix for retaining a layer of other material applied thereto, e.g. a dry film lubricant, paint, lacquer, or a Ni layer coated by electroless deposition from an aqueous bath containing 4 oz/gal NiCl2, 1.3 oz/gal NaH2PO2, 7 oz/gal NH4Cl, 13.4 oz/gal Na3 citrate, the pH being adjusted to 8-9 with NH3.  The electrolyte may be H2SO4 and/or H3PO4 or NaOH and/or KOH.  The colour of the oxide coating produced varies from light tan to slate grey.
Patent GB-1080523-A (GB)
Title: Curtain coating apparatus
Inventor: ALIX JOE FRANCIS
IPC: D06B1/04
Filed: 1966-01-12
Abstract: 1,080,523. Coating g apparatus. CONTINENTAL OIL CO. Jan. 12, 1966 [Jan. 18, 1965], No. 1525/66. Heading B2L. [Also in Division Dl] Curtain coating apparatus comprises a slotted coating head 68 for discharging a gravitating curtain 52 of a liquid coating composition, means for conveying a substrate 40 (in sheet or continuous web form) through the curtain and a horizontally extending knife edge 54 extending generally parallel to a vertical plane containing the slot of said coating head and horizontally spaced from said plane, the knife edge being positioned at a vertical level such that it is able to contact the upper surface of the substrate just before the substrate is moved through the curtain of coating composition. In the embodiment shown the knife edge 54 is formed by a preferably hollow bar 50 and may also incorporate an air current shield 64, the whole being adjustably supported by rods 66 from the machine frame. The bar 50 is also adjustably supported by arms 46 on side brackets 44. The hollow bar 50 may be connected to a vacuum or air pressure source by connection 56.
Patent GB-844582-A (GB)
Title: Improvements in or relating to powder boxes
IPC: A45D33/00
Filed: 1959-01-15
Abstract: 844,582. Powder compacts. KIASHEK, G. Jan. 15, 1959, No. 1536/59. Class 18. A retaining ring to fit inside the base of a compact and to enable refill blocks of powder of different diameters and depths to be accommodated in a single case comprises a ring having a top flange 2 engaging the top edge of the powder block, a vertical flange 1 which is a friction fit within the base of the compact and a pivoted ejection lever 4 for removing the ring. The flange 1 is of less depth than the base of the compact so that the ring can be pushed down until the flange 2 rests on the top edge of the powder block. Several levers 4 may be spaced around the periphery of the ring or two levers may be mounted on the same pivot and be urged towards each other in scissor fashion.
Patent GB-1497713-A (GB)
Title: Door holding device for example for an automobile vehicle
IPC: E05D11/10
Filed: 1975-01-14
Abstract: 1497713 A door stop mechanism; catches; hold-open hinges PAUMELLERIE ELECTRIQUE 14 Jan 1975 [17 Jan 1974] 1545/75 Headings E2A and E2F A door stop arrangement in particular for an automobile vehicle, comprises retaining means provided with at least one elastomer element 14 which cooperates with pressing means 13 which, under the action of the opening torque of the door, pass beyond, by elastic deformation, the retaining means and assume a stop position. The, or each, element of elastomer element 14 comprises a rubber sleeve 23, compressed between, and bonded to, two steel sleeves 21, 22 and is freely rotatably mounted on a pin 16 fitted in sleeves 17 on a branch 6 of an L-shaped hinge part 4 which is bolted, at 7, to a vehicle door post 3, the other branch 8 of the hinge part 4 supporting the pivot pin 1 which extends through two branches 9 of the other forked hinge part 11 which is secured, at 12, to the vehicle door 2. A pressing rod 13 is fixed between the two branches 9 of the hinge port 11. In a modification, Fig. 3 not shown, the pin (16) carrying the collar (18) is mounted between the two branches (9) of the hinge part 11, the collar (18) cooperating with a cam (26) which is fixed to the hinge part (6) and which has two stop notches (28, 31). In a further modification, Fig. 4, two forked hinge parts 33, 34, fitted one inside the other. are interconnected by a pivot pin 1, the branches 36 of the fork 33, which is secured to the door post 3, each defines an arcuate slot 37 in which is disposed the pin 16 which supports the collar 18 and which is mounted between the branches 38 of the other fork 34 secured to the door 3. The collar cooperates with two pressure rods 13 which are mounted between the branches 36 of the fork 33, to provide two retaining positions
Patent GB-978598-A (GB)
Title: Friction caps for pit props
Inventor: BAINES ALEC SABIN
IPC: E21D15/54
Filed: 1963-01-14
Abstract: 978,598. Mine roof support caps. J. BURNS Ltd. Oct. 24, 1963 [Jan 14, 1963], No. 1630/63. Drawings to Specification. Heading E1E. A friction cap for a pit prop is constructed from a mixture of nylon 6 and nylon 66 in the range 90-70% and 10-30% by weight, respectively. The surface of the cap may be roughened or provided with a layer of sand.
Patent GB-489229-A (GB)
Title: A draught preventer for doors
IPC: E06B7/20
Filed: 1937-01-20
Abstract: 489,229. Draught-excluders for doors. EVANS, J. B. Jan. 20, 1937, No. 1662. [Class 20 (iii)] A draught-excluder for the bottom rails of doors, of the kind which is hinged and raised by a spring when the door opens, is pivoted to the door by L-shaped arms 9 having slotted feet 7, Fig. 7, so that the excluder may be adjusted to touch the rabbet on the door and the floor simultaneously. The strip is actuated bv a stud 10 on an extension of one arm and an adjustable stop in a recess in the jamb. The strip has felt or sponge-rubber packing 6 to contact with the floor and door and is raised by a spring 15 anchored on a pin 16 when the door opens.
Patent GB-327767-A (GB)
Title: Improvements in or relating to tone generating equipment for use in telephone systems
IPC: H04M19/02
Filed: 1929-01-17
Abstract: 327,767. Automatic Telephone Manufacturing Co., Ltd., and Rayner, T. R. Jan. 17, 1929. Automatic exchange systems. - Tone currents comprising a number of harmonics are obtained by multiplying the frequency of supply currents in circuit 10, 11 by means of a full-wave magnetic or other rectifier T1, T2, and a transformer T3. A number of such arrangements in cascade may be used.
Patent GB-170526-A (GB)
Title: Improvements in binding devices for loose leaf ledgers, files and the like
IPC: B42F13/04
Filed: 1921-01-11
Abstract: 170,526. Hamlett, H. W. Jan. 11, 1921. Flexible-band files; clamping - devices; covers.-In loose-leaf binders of the kind in which a single cable e co-operates with a right and left hand threaded mem ber in one clamping- bar, the cable if looped over guides on the nuts and its ends are secured ir the other clamping bar so that equalization of tension occur; throughout the cable The operating-spindle 4 is mounted between two plates 1, 2 spaced apart by distance - pieces formed by bending the ends of one of the plates. The right and left hand nut 7 have rounded projections 8 and their under surfaces are flattened to slide without rotation upon the spindle. The cable passes around the projections 8 and guides 10 and then through holes having bell-mouthed ferrules 12, its ends being secured in the other clamping-bar 13. For use with sheets having filing - perforations differently spaced, the ferrules are mounted in slots 15 and are adjustable along a series of holes 16. The guide 10 and ferrule may be integral The cable may be led around the nuts to opposite ferrules, or to guide-pulleys.
Patent GB-563226-A (GB)
Title: Improvements in and relating to mountings for aircraft engines
IPC: F16M5/00
Filed: 1943-02-06
Abstract: 563,226. Mounting aircraft engines. MARTIN, J., and MARTIN-BAKER AIRCRAFT CO., Ltd. Feb. 6, 1943, No. 2017. [Class 4] Mounting for aircraft engines, particularly such of H-, X- or V-form that present a small frontal aspect, comprises cantilever side frames,rear and front cross-members or beams supported at their ends by resilient connections to the side frames and means intermediate the ends of the cross-members for securing the engine thereto. The side frames are braced by a vertical transverse quadrilateral assembly of struts in the vertical plane containing the rear beam. Each side frame comprises tubular members 5, 28, 10, 21, 43, 44 secured by lugs 43c, 21a to the aircraft structure. A front cross-bearer 2 is secured to stubs 3 extending from sleeves 4 on the members 5, with the interposition of rubber bushes 37. The front feet of the engine are fastened by bolts 41 to pads 40 disposed near the ends of the bearer 2 and between the side frames, a spigot 42 being provided' on the starboard pad to. register with the corresponding foot of the engine. The rear and main crossbeam comprises a tube 1 into which are fitted tubes 1b the ends of which are received in the inner bushes 45 of rubber collars 46 that are compressed between the bushes 45 and sleeves 47 and disposed in housings 9 forming the heads of the struts 10. The members 45, 47 are secured and play of the beam in the housings 9 is limited by collars 52 co-operating with caps 48 on the housings 9 and by ledges 49 on the housings. The pads 53 for the rear engine feet are disposed at a substantial distance from the 'housings 9 and have a universal connection with the beam 1 provided by spherical bearing surfaces 57, to allow for bending of the beam. The bearing for one of the pads also has limited freedom of movement laterally between stop collars 58 to take care of variations of distance between the feet due, for instance, to temperature changes. Cross-members 11, 12 bolted by means of collars 15, 19, to the struts 10 and diagonal members 13 form with the struts a quadrilateral frame beneath the beam 1 that enables the structure to take the side loads when, for example, the aircraft turns on to one side. Extending rearwardly from the member 12 to each member 21 is a Y-arrangement of tie members 23, 24, 25. A similar arrangement of the tie-members 30, 31, 32, extends forwardly from member 12 to member 28. The arms 5 are braced at the front end by a cross-member 35 which is braced by diagonals 36 extending to the members 28. Lugs 59, 60 are provided for the attachment of means for jacking-up the engine and mounting. With the rubber damping devices spaced laterally from the engine feet, a precise degree of hardness is rendered unnecessary and the selection of the kind of rubber suitable to meet the several requirements of the mounting is facilitated.
Patent GB-278934-A (GB)
Title: Personal weighing scale
IPC: G01G23/32
Filed: 1927-01-24
Abstract: 278,934. Dehn, F. B., (Weightograph Co.). Jan. 24, 1927. Indicating-mechanism.-In a weighing-scale in which the indications can be seen by that person only who is standing on the platform, the indications are projected on to the bottom of a substantially vertical compartment that projects from the housing and has a sight opening in its upper end. An image of part of a transparent movable chart 17 is projected by a lamp 18 on to an opaque white screen 24 disposed in the bottom of a compartment 25 formed in the front wall 15 of the housing of a weighing-scale. Lenses 19, 21 and an adjustable mirror 22 are provided to focus the image on the screen. The image is viewed through a hexagonal window 28 in the upper end of the compartment 25. A pointer may be marked on the screen to point out the correct indication. The space surrounding the screen is preferably blackened.