baber/WOPTO huggingface dataset:
Patent GB-377598-A (GB)
Title: Improvements in and relating to scholars desks
IPC: A47B41/02
Filed: 1932-02-23
Abstract: 377,598. Desks. EDUCATIONAL SUPPLY ASSOCIATION, Ltd., 171, High Holborn, London, and ANSELL, A. W., 54, Basils Road, Stevenage, Hertfordshire. Feb. 23, 1932, No. 5409. [Class 52 (iii).] A scholar's desk has a slope 2 which may be drawn forward so as to provide knee room in front of the locker 3. The slope is hinged at 9 to brackets 4 on the ends of a batten 1 which normally covers the pen rest 11 and inkwell 12. The lower flanges of these brackets move in guide slots 8.
Patent GB-452051-A (GB)
Title: Improvements in microphones
IPC: H04R21/02
Filed: 1935-02-20
Abstract: 452,051. Microphones. MIDGLEY, A. H., 9, Priory Hill Avenue, Wembley, Middlesex. Feb. 20, 1935, Nos. 5478, 7834, and 20354. [Class 40 (iv)] A microphone comprises one or more units, each of shallow box-like form constituting an air-tight compartment and arranged so that the incident sound-waves impinge directly on the end surfaces of small area of the unit while the compression and rarefaction phases, of the waves act upon the relative ly much larger areas lying in planes substantially parallel to the direction of travel of the waves. The condenser microphone unit, Figs. 1, 5, comprises metal plates a, b secured on opposite sides of a rectangular spacer member c to form a shallow air-tight box - member, provided with holes by which the unit is threaded on to supporting members e carried on an insulating base g. The units are spaced by members f and each unit is mounted so that the incident sound waves impinge on the edges of the box-like members, the sides of the box being subjected to the consequent waves of compression and rarefaction. In a modified form, Figs. 6, 9, 11, the unit comprises a metal plate i formed with apertures i<1>, a diaphragm k of thin aluminium, an insulation frame with apertures corresponding to the apertures i<1>, an insulation cover and a central electrode member o, mounted in superposed relation. The electrode member is formed by a sheet of a phenolic condensation product in which is moulded an electrode having plates n which register with the openings in the plate i. In a modified form, Figs. 15, 16, the electrode member t has metallic plates s joined by narrow neck portions s<1> and an annular opening t<1> which communicates through holes r<1> in the insulation cover r with the space beneath the diaphragm. The shallow box-like member may be filled with carbon granules, and in the form shown in Figs. 6 to 11 the insulating cover is omitted.
Patent GB-112361-A (GB)
Title: Improvements in or relating to Rocking Devices for Mixers for Cast Iron.
IPC: C21C1/06
Filed: 1917-04-19
Abstract: 112,361. Stein et Cie., C. M. March 9, 1917, [Convention date]. Addition to 110,739. Oscillating batch-mixers.-In a modification of the rocking-device for mixers for cast iron described in the parent Specification, the lower part of the body of the furnace or mixer 1 comprises several curved rockers 2 arranged at intervals and resting on rollers 6 which serve to actuate it. The shafts 10, 10<1> of the rollers are actuated through toothed gearing from electric motors, the rocking or oscillating motion of the mixer being obtained by reversing the direction of the current in the motors.
Patent GB-1374378-A (GB)
Title: Process for the production of trialkyl aluminum compounds
IPC: C07F5/06
Filed: 1973-02-05
Abstract: 1374378 Preparing trialkyl aluminium compounds CONTINENTAL OIL CO 5 Feb 1973 5646/73 Heading C2J A trialkyl aluminium compound of formula AlR 2 R<SP>1</SP> where R and R<SP>1</SP> are C 2 -C 20  alkyl groups is prepared by a continuous process comprising reacting AlR 3  (usually as a solution in a hydrocarbon solvent) with aluminium metal and H 2  at 20-500 atmospheres and 100-170 C. to form a dialkyl aluminium hydride, reacting the latter at the elevated temperature and pressure with a 1-olefin R<SP>11</SP>CH = CH 2  where R<SP>11</SP> is H or C 1 -C 18  alkyl and R<SP>11</SP>CH 2 CH 2 - equals R<SP>1</SP> so that a quantity of AlR 2 R<SP>1</SP> is formed sufficient to reduce the concentration of the dialkyl aluminium hydride in the reaction product to a level equal to or slightly below the equilibrium concentration thereof that would exist at a reduced pressure of 20-35 atmospheres and 100-170 C., reducing the pressure on the intermediate product to said reduced pressure, and then reacting the intermediate with additional 1-olefin at 100-170 C. to form additional AlR 2 R<SP>1</SP>. A portion of the final AlR 2 R<SP>1</SP> product may be recycled to the initial reaction step provided that R<SP>1</SP> = R. The reactants AlR 3  and R<SP>11</SP>CH=CH 2  may particularly be triethylaluminium and ethylene but other trialkylaluminiums and 1-olefins are also specified. The aluminium metal reactant may be in finely subdivided form and may contain catalytic amounts of Zr, Ti or Hf.
Patent GB-306463-A (GB)
Title: An improved cutting or shredding machine for vegetables and fruits
IPC: A23N1/02
Filed: 1929-02-20
Abstract: 306,463. Bertele, J. Feb. 20, 1928, [Convention date]. Cutting vegetables &c.-A cone-shaped plate e provided with blades d adapted to be rotated from a hand wheel through bevel gear m, n, surrounded by a projecting plate j, is arranged with an exchangeable cutting or shredding drum c that is reduced in diameter towards the top and is provided at the bottom with lateral projections p adapted to pass under and wedge against overhanging hook members r carried by a threearmed main frame b. The drum and the frame are carried within a cylindrical casing a having a conical lower portion a<2> extending to a baseplate a' and provided with a front opening s through which a collecting vessel t may be introduced to collect the cut material. The plate e can be raised on its rotating shaft and is coupled thereto by a slotted recess engaging a pin v on the shaft.
Patent GB-438876-A (GB)
Title: Improvements in and relating to electrically heated vulcanizers
IPC: B29C35/00
Filed: 1934-02-21
Abstract: 438,876. Electric vulcanizers. FISHER, R. L., 14, Dalgety's Building, Cathedral Square, Christchurch, New Zealand. Feb. 21, 1934, No. 5701. [Class 70] [See also Group XI] In an electrically-heated vulcanizer of the type comprising a casing having one side enclosed by the vulcanizing mould or plate and containing heating elements spaced from said mould with an intermediate air layer, a draught box or means for air admission, positioned at the bottom of said casing, a vent for escape of air, and adjustable means for wholly or partially intercepting the air leaving said vent are provided. A vulcanizer for the segmental retreading of tyres comprises a U-shaped metal mould 1 forming part of a casing enveloped in lagging 7. An electric heating element 9 is uniformly spaced from the mould while an element 10 or " booster," of higher heating capacity, and an element 11 or " wallbooster " are arranged relatively to the element 9 as shown. The booster 10 is used for preheating while the wall-booster is employed for reducing the heat transfer to the walls. A draught box 17 and vent 19 provided with a slidable cover 21 permit of the production of a convection air current through the casing. Openings 14, 15 in the lagging permit radiation from the mid-portion of the apparatus through apertures 16 the area of which may be variable. The mould 1 is formed with ridges 23 serving as radiating surfaces and to receive the tyre clamps 24. The lagging on the top of the casing formed by the mould may also be in the form of covers 25 adjustable in slides 26. A movable lining or matrix fits within the mould 1 and receives the tyre. By substituting matrices of different thicknesses, tyres of varying tread widths can be treated. To vary the length of the segment cured, the mould is formed with a stepped portion 28 at one or both ends. The space between the matrix and the portion 28 can be filled with metal fillets of various lengths. Moreover, a break may be formed in the matrix, the separate portion being held in a bracket. A thermometer opening 29 is provided. A cover for the mould is provided when no tyre is in position. The current to the elements 10 and 11 may be automatically cut off at the desired time by means of a time switch or thermostat.
Patent GB-1501085-A (GB)
Title: Foam sandwich constructions
IPC: B29C44/12
Filed: 1974-02-07
Abstract: 1501085 Laminates UNITEX Ltd 7 Feb 1975 [7 Feb 1974] 05716/74 Heading B5N A foam sandwich construction is produced by applying to the polished surface of a curved female mould a gel coat, laying glass cloth together with resin on to the gel coat to form a glass fibre reinforced plastics outer skin, laying on to the wet resin semi-rigid expanded polyurethane foam and laying on to the foam a further layer of glass cloth and resin to form, after curing, a glass fibre reinforced plastics inner skin, the semi-rigid expanded polyurethane foam being in the form of a board which contains parallel grooves cut almost through the board and the board being not more than 1À75 inches thick and the grooves being not more than 2À5 inches apart. The gel coat is one which enables subsequent separation of the sandwich construction from the mould. The glass cloth is (a) a chopped strand mat of glass fibres, (b) a woven roving of glass fibres, (c) a woven cloth of glass fibres or (d) a combination of (a) and (b). The polyurethane foam board may be 4 ft. by 2 ft. by not more than 1À75 inches and the grooves may be machined down into the board until only about # inch of foam remains to hold the strips defined by the grooves together.
Patent GB-418955-A (GB)
Title: Improvements in devices for vacuumizing and closing preserving jars and like receptacles
IPC: B67B3/24
Filed: 1934-02-21
Abstract: 418,955. Closing cans &c. in vacuo. BRENDEKE, W., 71, Bramfelderstrasse, Hamburg, Germany. Feb. 21, 1934, No. 5732. Convention date, Jan. 13. [Class 125 (ii).] A device for vacuumizing and hermetically closing and sealing preserving jars &c., comprises tool operating elements and a guide member 38<1> with a hemispherical surface which engages in a hemispherical seat 42 in the tool inlet to hermetically seal the vacuum chamber 10 during the closing or sealing operations. A stuffing box 38 is provided in the member 381. The operating element may be a screwed spindle which engages in a thread in the stuffing box and operates a number of pressure heads for closing the receptacles. A pin and slot connection may be provided for connecting the frame carrying the pressure heads to the spindle. The frame is slidably mounted in the chamber 10 and the heads may be adjustably spaced. An electric soldering iron 36 for use in soldering tins 47 can be substituted for the screwed spindle and the operations can be watched through windows 13, 43.
Patent GB-564906-A (GB)
Title: Improvements in and relating to bee comb foundations
IPC: A01K47/02
Filed: 1943-04-09
Abstract: 564,906. Bee - keepers appliances. DADANT, H. C., and GROUT, R. A. April 9, 1943, No. 5739. [Class 5 (ii)] Honeycomb foundations comprising wax sheets 15 with embedded wires 17 and supported in a frame 10 are provided around one edge of the sheet with an anchoring bar 21 flanged to enfold the hooked projecting end of each wire. A retaining strip 22 nailed to the frame presses the bar into the rabbet provided for its reception. One or both limbs of the bar 21 may be turned in or out against the main parts. Specification 549,740 is referred to.
Patent GB-561104-A (GB)
Title: Manufacture of ester-amide polymers
IPC: C08G69/44
Filed: 1942-04-29
Abstract: A process of preparing ester-amide polymers comprises heating in two stages, firstly to 150 DEG -180 DEG  C., and subsequently to 180 DEG -250 DEG  C., a mixture comprising bifunctional polyamide-forming and bifunctional polyester-forming reactants which consists at least of a monoamino-monohydric alcohol and a dibasic carboxylic acid.  In addition to these reactants, the mixture may contain other bifunctional reactants, e.g. diamines, amino acids and hydroxy acids. The complementary reacting groups should be present in substantially equimolecular proportions, and not less than 5.0 molar per cent of the amino alcohol, based on the other reactants, should be used.  The preferred amino alcohols are those having a chain of less than 4 carbon atoms separating the amino and hydroxyl groups, and the preferred dibasic carboxylic acids are those having a radical length of at least 6.  Examples are given of the preparation of ester-amide polymers from: (1) ethanolamine, sebacic acid and hexamethylenediammonium sebacate; (2) ethanolamine, o -hydroxymyristic acid and sebacic acid; (3) ethanolamine and sebacic acid; (4) ethanolamine, sebacic acid and hexamethylene - diamine - sebacic acid salt; (5) 6-aminocaproic acid, ethanolamine and sebacic acid, and (6) ethanolamine and adipic acid.  Specifications 461,237, 535,335 and 561,108 are referred to.
Patent GB-678956-A (GB)
Title: Improved process for preparing linear polyamides from lactams
IPC: C08G69/16
Filed: 1950-03-07
Abstract: Linear fibre-forming polyamides are prepared from lactames having six or more carbon atoms in the ring by heating the lactam at atmospheric pressure but excluding oxygen to temperatures between 200 DEG  and 300 DEG  C. in the presence as catalyst of a finely-divided hydroxide, containing at least two hydroxyl groups, of Ti, Zr, Hf, Ce, or Th; i.e. elements of subgroups A of group IV of the periodic system.  In examples: (1) 0.25 per cent of TiO(OH)2 in the form of a fine moist suspension and caprolactam were heated at 255 DEG  C. for six hours in an open tube and in an atmosphere of nitrogen to give a polymer having an intrinsic viscosity of 0.85; (2) 0.15 per cent of Ti(OH)4 as a gelatinous precipitate, 10 grams of caprolactam and 0.075 per cent phosphoric acid were heated in the tube drawn out to a capillary which dipped into petroleum ether, air being replaced by nitrogen; after five hours heating at 255 DEG  C. a polymer having an intrinsic viscosity of 0.92 was obtained producing threads capable of being cold-drawn to 4.5 times their original length; (3) 10 grams of zeta-heptanic acid lactam were heated as in (2) with 0.1 per cent of a thorium hydroxide gel and 0.05 per cent H2SO- for four hours to produce a fibre-forming polymer. The phosphoric and sulphuric acids prevent flocculation of the catalyst on heating.  Other lactams referred to are eta-octanic acid lactam and methyl-2-cyclohexanone isoxime.  Titanium dioxide may be added to the lactam as delustring agent for the polymer. Specifications 19420/38 (as open to inspection under Sect. 91), 535,421, 538,619 and 576,647 are referred to.ALSO:The Specification describes the preparation of a suspension of meta-titanic acid, TiO(OH)2, in water by hydrolyzing a solution of titanium sulphate at the lowest possible temperature, the precipitate being washed out in a dialyzer with distilled water.  A gelatinous precipitate of titanic acid TiO(OH)4 was prepared by precipitation from a solution of titanium sulphate with a small excess of ammonia. It is stated that the addition of inorganic bases or acids, e.g. sulphuric and phosphoric acids, stabilizes the suspensions and prevents flocculation on heating.
Patent GB-534607-A (GB)
Title: Envelope opening device
IPC: B65D27/38
Filed: 1940-04-01
Abstract: 534,607. Opening envelopes; unpacking. MAKKONEN, H. V. April 1, 1940, No. 5848. Convention date, April 13, 1939. [Class 146 (ii)] [Also in Group XVII] An envelope - tearing ribbon 3 secured to the inside of the envelope is so arranged that the envelope will be torn open along or adjacent an edge, first in one direction and then in another. The ribbon extends from one edge nearly to the other edge and is then folded back and projects through a hole 5, preferably triangular to form a tab 4. The tab may be loose, glued down, or covered over. A separate thread may be secured to the ribbon to assist the tearing. Oblique perforations may extend in the direction of tearing from longitudinal holes which may be wholly on the flap or partly on the flap and partly on the front of the envelope. The Specification as open to inspection under Sect. 91 of the Acts, states also that the ribbon may have two branches extending in both directions from the tab 4 and opening the envelope one by one or both together. This subject-matter does not appear in the Specification as accepted.
Patent GB-1216545-A (GB)
Title: Improvements in or relating to epoxy resins
IPC: C08G59/68
Filed: 1968-02-06
Abstract: 1,216,545. Modified epoxy resins. MASCHINENFABRIK OERLIKON. 6 Feb., 1968 [7 Feb., 1967], No. 5862/68. Addition to 1,094,324. Heading C3B. The process of the parent Specification 1,094,324 is modified in that the diglycidyl ether of bisphenol A is treated with any alkali metal (e.g. K, Li) instead of only sodium; the composition also contains per 100 parts by wt. of epoxy resin 0À25-5 parts by weight of an epoxy alkylsilane ester, e.g. γ-glycidoxypropyltrimethoxysilane or # - 3,4 - (epoxycyclohexyl) ethyltrimethoxysilane. The composition is degassed prior to curing with substantially equivalent quantities of a polycarboxylic acid anhydride, for at least one hour at 40-70 C. and pressures of 0À5 to 10 Torr.
Patent GB-999632-A (GB)
Title: Primary cell
IPC: H01M6/06
Filed: 1962-02-16
Abstract: 999,632. Batteries. MALLORY BATTERIES Ltd. Feb. 16, 1962 [April 28, 1961], No. 6012/62. Heading H1B. A primary cell comprises a gold-plated steel cathode collector, and a cathode depolarizer in contact with the gold plating. As shown, a cylindrical pellet 4 of cathode depolarizer is contained in a cylindrical steel cathode collector 3 which has a gold plating 13. The anode comprises cylindrical pellets 6 of amalgamated zinc containing 13% mercury. The depolarizer is a mixture of 91% manganese dioxide and 9% micronized graphite. The cell is closed by a double lid 9, 10 and sealed by a plastics grommet 8. Cells having a depolarizer of mercuric oxide are also mentioned.
Patent GB-254230-A (GB)
Title: Improvements in or relating to amusement apparatus or roundabouts
IPC: A63G7/00
Filed: 1926-03-04
Abstract: 254,230. Haithwaite, F. Sept. 15, 1925, [Convention date]. Amusement apparatus.-In passenger vehicles of the kind comprising a superstructure 3 mounted on an undercarriage 4 and running on an undulating track 1 which is preferably in the form of an ellipse, the swivel connection 7 between the superstructure and undercarriage is placed within the undercarriage so as to prevent rocking movement. The undercarriage 5 comprises a metal plate mounted on wheels 18 and guided along the platform by studs 11 which pass through a slot 10 and carry rollers 12. 'These rollers engage the underside of the track to prevent lifting of the cars and are prevented from moving sideways by angle-irons 13. The swivel connection 7 comprises a ball-joint placed near the plate 5 and the superstructure 3 is free to turn round on the connection, being provided with castors 9. A tie-rod 14 connecting the studs 11 is provided with forks 15 which are engaged by a driving cable 17, and the cars are connected together in series by rods 19 which have ball connections 20 with the rods 14. The cable 17 is endless and passes round a pulley 21 driven by a motor 25, an adjustable pulley 22 taking up any slack. Specification 228,697 is referred to.
Patent GB-369360-A (GB)
Title: Improvements in or relating to the directional transmission or reception of wave energy in space
IPC: G01S1/02
Filed: 1931-02-26
Abstract: 369,360. Directional reception and transmission of wave energy regulating- switches. ELECTROACUSTIC G E S., Werk Ravensberg, Kiel, Germany. Feb. 26, 1931, No. 6095. Convention date, April 3, 1930. [Class 118 (ii).] In apparatus for the reception of wave energy from, or its transmission to, any direction in space by the interference method, oscillators are arranged on the surface of a sphere or on a plurality of concentric spheres and are connected through a compensator to a common generator or indicator. The spherical surface on which the oscillators are mounted may be rotated to some extent so that transmission and reception may be effected with equal accuracy in all directions in space. Fig. 3 shows the manner in which the connections 45, 46, 47 from the oscillators are connected to the compensator retardation line K. On the surface of a fixed sphere 22 are a number of conducting strips 1, 2, 3, &c., insulated from one another and each connected to one section of the retardation line K. Pivoted on the axis 23 of the sphere 22 is a forked arm 24 rotatably carrying a shaft 25 to the lower end of which is attached a hemispherical shell 27. On this shell are fixed contacts 30 .. 40 connected to the oscillators and bearing on the strips 1, 2, 3. The contacts are connected to the oscillators by lines 45, 46, 47 and slip rings 42, 43, 44. The oscillators may be symmetrically arranged on the sphere and the contacts 30 .. 40 similarly arranged on the hemisphere. A generator or an indicating or recording device F is connected to the retardation line. The adjustment for altitude is effected by turning the hemisphere about the axis 23 and that for azimuth by turning it about the axis 25 by a hand-wheel 26, suitable scales being provided. Specifications 348,660, 355,742, and 360,565 are referred to.
Patent GB-798197-A (GB)
Title: Improvements in or relating to bed-settees
IPC: A47C17/175
Filed: 1956-02-28
Abstract: 798,197. Bed-settees; securing upholstery, &c. PANTON, R. R. Feb. 26, 1957 [Feb. 28, 1956], No. 6095/56. Classes 52(2) and 52(4) A bed-settee for caravans, &c., has a rectangular base 1, a sliding frame 2 to rest thereon, a folding frame 10 hingedly connected to elevated shoulders on frame 2 by pins 9, a two-section hinged mattress 3a, 3b received on the frames, an upholstery cover 12a, 12b to enclose the mattress sections and a stiff tube or rod member 13 detachably secured by clip 9a between the hinge points to retain the cover taut when the device is in use as a settee, the cover 12a being passed around and secured to rod 13 and the covers being joined together by means of tapes 14, 15. When in use as a bed the frame 2 is pulled forward until its rear edge rests on the forward edge 1a of base 1, frame 10 is lowered until it rests on a platform 7 forming a rearward extension of base 1 and the covers 12a, 12b are unfastened and rod 13 detached to expose the mattress and bedding. The base 1 is downwardly inclined towards its rear edge to impart rearward inclination to the seat portion.
Patent GB-166496-A (GB)
Title: Improvements in steering mechanism for ploughs
IPC: A01B69/00
Filed: 1919-09-23
Abstract: 166,496. Saunderson, H. P. Sept. 23, 1919. Ploughs.-A multiple-furrow plough of the type described in Specification 166,262 in which a draw-bar l is pivoted at m to a frame a supported on forward furrow and land wheels d, f and a rear wheel e, has its furrow and rear wheels d, e mounted on vertical shafts g, h so connected to the draw-bar and between themselves that movement of the draw-bar in steering the implement causes corresponding swinging of these two wheels. The draw-bar l is connected to an arm s on the vertical shaft of the furrowwheel by a link q, universal joints being provided at each end of this link to permit vertical movement of the shaft g during the lifting and lowering of the frame. A second arm n on the shaft g is connected to an arm o on the shaft h of the rear wheel by a link p, the arms n and o being arranged on opposite sides of their respective shafts so that the wheels d, e are swung in different directions. Holes t in the arm o permit adjustment of the relative swinging movements of the two wheels.