baber/WOPTO huggingface dataset:
Patent GB-1195707-A (GB)
Title: Production of Polylactams
IPC: C08G69/18
Filed: 1967-06-28
Abstract: 1,195,707. Foamed polylactams. E. I. DU PONT DE NEMOURS & CO. 28 June, 1967 [29 June, 1966], No. 29756/67. Headings C3C and C3R. A process for preparing a foamed polylactam, comprises carrying out the anionic polymerization of a lactam at a temperature between the melting-points of the lactam and of the polylactam in the presence of an anionic catalyst and a co-catalyst and, as blowing agent (i) an organic formate of formula R A -O-C(O)-H, R B (-OC(O)-H) 2 , or Ar<SP>11</SP>-(O-C(O)-H) n , the free valences of the polyvalent aromatic radical Ar<SP>11</SP> being joined to a plurality (n) of formate groups, wherein R A  is R c  or R D , R c  is Ar<SP>1</SP>- or R E -Ar<SP>11</SP>-RF-, Ar<SP>1</SP> and Ar<SP>11</SP> being, respectively, mono- and poly-valent aromatic radicals of 1 to 3 aromatic rings, R E  being H or R G -R F -, R F  being divalent -C(R G ) 2 -, the R G 's being the same or different and being H, an alkyl group or an aromatic radical of up to 7 carbon atoms, R D  is a tertiary alkyl group, the tertiary carbon atom being attached to the formate radical, and R B  is divalent -R-Ar<SP>11</SP>-R F -, the R F 's being the same or different; (ii) an organic formamide of formula wherein the free valences of the polyvalent aromatic radical (Ar<SP>11</SP>) are joined to a plurality (n) of formamide groups, wherein the R's and Ar<SP>11</SP> have the same meanings as indicated above for the organic formates, and R H  is R D  or R M -CH=CH-CH 2 - , R M  is H or an alkyl group, R J  is H, R c  or R E -R F -CH = CH-CH 2 -, R K  is R J , an alkyl group, a heterocyclic group containing 1 to 3 hetero N atoms, or an alicyclic radical containing up to 30 carbon atoms, and R L  is divalent-R F -CH = CH-CH 2 -, or a divalent alkylene group having a chain of at least 4 carbon atoms between the N atoms of the formamide groups, or (iii) an organic formate/formamide of formula where X is R J  or R K , a and b are integers of at least 1 whose sum equals the number of free valences of Ar<SP>11</SP>, and Ar<SP>11</SP>, R, and R K  have the same meanings as indicated above. The process is particularly suitable for preparing foamed lactams of 5-12 C atoms such as caprolactam and enantholactam. The anionic catalyst may be a lactam-base salt and is usually used in an amount 0.3-1.5 mole per cent. In the examples #-caprolactam is foamed using N,N- diphenylformamide in the presence of CaCO 3 , NaH in mineral oil, potassium stearate and poly - [2,2 - propanebis - (4 - phenyl carbonate)]. Other foaming agents specified include formanilide, p-anisole formate, tert.-butyl formate, 4-formamidophenyl formate and 2-(N-formamido)-8-aminoanthracene.
Patent GB-341019-A (GB)
Title: Improvements in apparatus for intermittently operating electric signals
IPC: G08B5/38
Filed: 1929-10-01
Abstract: 341,019. Electromagnetic interrupters. BRONTMAN, E., 106, High Street, Southampton.-(Garbarini, A., 23, Rue de Colombes, Courbevoie, Seine, France.) Oct. 1, 1929, No. 29759. [Class 38 (v).] An apparatus for intermittently operating electric light or sound signals comprises two isochronous pendulum groups each of which consists of two pendulums 20, 21, Fig. 2, connected at the upper end by a beam 19, the groups being connected at their lower end by a coil 5 moving in a strong magnetic field by which impulses are given to the pendulums. Each pair of pendulums carries at its upper end one or more mercury in glass switches by which the signal circuit, and the circuit through the coil 5 is made and broken. The magnetic field may be that of two horseshoe magnets 1, Fig. 1. The pendulums are suspended by pointed screws 22, 23 resting in adjustable bearings A, B the bearings A being of conical form and the bearing B having a V-shaped groove therein. A regulating resistance 30 may be mounted on the casing.
Patent GB-533479-A (GB)
Title: Improvements in frequency modulation systems for carrier wave signalling
IPC: H04J1/20
Filed: 1939-11-10
Abstract: 533,479. Frequency modulation; multiplex wireless signalling. BRITISH THOMSONHOUSTON CO., Ltd. Nov. 10, 1939, No. 29794. Convention date, Nov. 12 1938. Drawings to Specification. [Class 40 (v)] Signals are transmitted by modulating a subcarrier wave which is then used to frequencymodulate a main carrier, the frequency variation of the latter being greater than the frequency of the sub-carrier substantially by any one of the multiplication factors 3.83, 7.015, and 10.17. These are the three lowest values of m for which the Bessel function J,(m) vanishes, m being the ratio of the frequency range of the main carrier to the frequency of the sub-carrier, and the Specification shows by analysis that these values result in maximum noise elimination. The modulation of the sub-carrier by the signal may be an amplitude modulation or a frequency modulation. Two or more sub-carriers may be employed for multiplex working, and an additional channel may be provided by using one of the signals to frequency modulate the main carrier directly.
Patent GB-259792-A (GB)
Title: Apparatus for handling materials
IPC: B65G17/48
Filed: 1925-11-25
Abstract: 259,792. Baker, D. S. Nov. 25, 1925. Rope railways.-Material to be dried or otherwise treated in a chamber C is carried on trays 20 on four-wheeled carriers 10 supported from an endless overhead runway 50. The runway comprises a pair of angle-irons, the forward wheels of the carriers running on the narrow upturned edges and the rear wheels on the horizontal flanges. The carriers are propelled along the level portion of the runway by forked projections 74 on an endless chain 76, which engage over the projecting ends of the axles. A carrier reaching the bottom of the slope 56, Fig. 1, is arrested by a stop 75 until it is engaged by one of the forks 74. A separate, conveyer chain running at a lower speed may be provided for moving the carriers through the chamber C.
Patent GB-1097527-A (GB)
Title: Stainless steel and treatment thereof
IPC: C22C38/40
Filed: 1965-07-14
Abstract: A stainless steel having a metastable austentic structure which is transformable to martensite by room-temperature working has the following percentage composition:- .Si.less than 0.15 .Ni.4-12 .Cr.15-21.2 .Fe.and incidental elements, ..the balance the sum of Ni and Cr being not greater than 25.2 and the E.N.I being between 20.5 and 23.
Patent GB-902928-A (GB)
Title: Method of developing an electrostatic image and a developer for use in the method
IPC: G03G15/10
Filed: 1958-09-18
Abstract: 902,928. Electrophotographic processes. AUSTRALIA, COMMONWEALTH OF. Sept. 18, 1958 [Sept. 25, 1957], No. 29939/58. Class 98 (2). An immiscible carrier liquid or gas is added to a liquid suspension of electrographic developer powder and the agitated fluids are flowed over a surface carrying an electrostatic image so that the image is developed in the presence of powder-free droplets of carrier liquid or gas. Preferably, the developer liquid has a resistivity of not less than 10<SP>10</SP> ohm cm.<SP>-1</SP> and a low dielectric constant. Suitable liquids are cyclohexane, mineral turpentine, kerosene and xylene. The carrier liquid may be water. In an example phthalocyanine blue is ground with a liquid resin mix in a ball or roller mill to coat the particles with the mix. The resultant paste is dispersed in kerosene in which one component of the resin is partially soluble. This component forms an adhesive which sticks the particles to the image surface when the kerosene has evaporated. The other component of the mix is retained on the particles and is stated to increase the speed of the development process. Equal volumes of the developer suspension and water are mixed, optionally with an emulsifying agent such as glycol, gum arabic, selenium dioxide or chloride or potassium permanganate, and the mixture placed in tank 4. The liquid phases are prevented from settling out by the stirring action of pump rotor 8 which circulates the liquids through ducts 9, 10 and 11. A sheet of paper 2 carrying an electrostatic image is placed on tray 1, its top edge being engaged in groove 17. On moving vane 13 the liquids are pumped up duct 12 and issue from slot 15 to effect immediate development of paper 2. In another form, nitrogen is bubbled through the developer liquid against the underside of a sheet of image bearing paper.
Patent GB-245264-A (GB)
Title: Improvements in automatically oscillating electric fans
IPC: F04D25/10
Filed: 1924-12-13
Abstract: 245,264. Lister, J. F., and Smallwood, H. W. Dec. 13, 1924. Mounting.-An automatically oscillating fan is driven by an electric motor, which also drives a crank arm k; a telescopic member is arranged between the end of the crank arm and the fixed support. The motor a is mounted on trunnions a<2>, a<3> in a ring which is in turn mounted on trunnions d<2> in a bifurcated frame e hanging from the ceiling connection f, Fig. 1. The motor shaft carries the fan and drives the arm k through worm gear; the arm k is rotated by its shaft j<2> through a friction clutch l. The rod x<3> attached to the arm k forms the telescopic connection with the sleeve x<2> in the crown e<2> of the frame e and thus causes the fan to oscillate while the motor is working. In a modification for a table fan, the rod x<2>, Fig. 3, works in a sleeve x<2> on the top of the peg e<2 >forming the pivot for the frame d which supports the fan and motor on trunnions. In another modification a crank plate is substituted for the arm k and the rod x<3> engages in a sleeve x<2> mounted to rock in an arm n, Fig. 6, which projects immovably from the peg e<2>.
Patent GB-329937-A (GB)
Title: Improvements in door or gate latch furniture
IPC: E05B3/06
Filed: 1929-10-03
Abstract: 329,937. Baker, J. W. Oct. 3, 1929. Knobs or handles are fitted to door-plates 3 by spring rings 7 engaging grooves 5 in the shanks of the knobs &c. in such a manner that the ring, tending to contract, exerts axial pressure holding the parts together. The groove is preferably formed with a stop portion 9 fitting in the gap of the ring which rotates with the knob.
Patent GB-1194067-A (GB)
Title: Internal Combustion Engine of the V-type
Inventor: MARTHINS NILS LENNART
IPC: F01B9/06
Filed: 1968-06-25
Abstract: 1,194,067. Driving gear. GOTAVERKEN A.B. June 25, 1968 No. 30121/68. Heading F1B. In a two-stroke internal combustion V-engine, e.g. a diesel engine for a ship, having up to fifteen pairs of cylinders 6, 7, the piston rods 9 of each pair carry rollers 10 which co-operate with a cam disc 3 on the output shaft 2. To synchronize the movement of the rods 9, the rods co-operate with a piston yoke 16 having forked ends engaged, with rolling contact, over extensions (not shown) of pins 11. Moreover, these extensions form crossheads which extend laterally of the rods 9 into grooves in guides 13 to absorb lateral forces acting on the rods. The cams 4 are symmetrical and the radius of curvature of the radially outermost part of each cam is preferably 50% greater than the radius of the rollers 10. The engine shown is reversible. The cams 4 may instead be asymmetrical, in which case the engine will not be reversible.
Patent GB-350860-A (GB)
Title: Watercraft
IPC: B63H5/02
Filed: 1930-10-08
Abstract: 350,860. Hydroplanes; watercraft with multiple hulls. BARTA, K., St. Ruprecht, near Klagenfurt, Austria. Oct. 8, 1930, No. 30122. [Classes 113 (ii) and 114.] Watercraft with twin hulls 1, 1a between which a paddle-wheel 3 is mounted are provided with a pair of aerofoils 5, 5a rigidly attached to the hulls 1, 1a. The paddlewheel is provided with paddles 4 arranged so that they enter the water flat.
Patent GB-236108-A (GB)
Title: Combined ankle and stocking protectors for use in golfing or for other purposes
IPC: A43B23/28
Filed: 1924-12-16
Abstract: 236,108. Riddick, D. Dec. 16, 1924. Socks.-An ankle and heel protector for wear over the stockings projects above the shoe and protects the ankle portions of the stockings from mud and undue wear. The protectors are intended to be worn for sports or for other purposes, and are shaped to fit over the heel and ankle. They are cut away on the outside 3 and may be fastened above the shoe upper with an elastic band 4 having press or other fasteners.
Patent GB-803348-A (GB)
Title: Improvements in or relating to building sheeting units
Inventor: SHEAD BERTRAM BERESFORD
IPC: E04D13/17
Filed: 1955-10-24
Abstract: 803,348. Roofs; walls; ventilator open ings. POWER-GAS CORPORATION, Ltd. Oct. 23, 1956 [Oct. 24, 1955], No. 30284/55. Classes 20(4) and 137 Sheeting units 1, 4 for covering the roofs and walls of lightly constructed buildings each have a channel-like section 2 formed along one edge and a complementary section 3 along the opposite edge so that. when a number of the sheets are attached to the building framework 5 in interlocking series, with the sections 2 partially surrounding and spaced from, the complementary sections 3, a number of air vents are formed which prevent entry of rain &c. Alternate sheets 4 are fixed to the framework by bolts 6, the sheets 4 between them being slidably mounted by means of bolts 7 which engage in slots 8 formed in brackets 9 secured to the framework 5 so that the air vents can be closed, or varied in size. In a modification, Fig. 2, alternate units 10 are slidably mounted on bearing blocks 13, stiffening ribs 18, placed at intervals along the sheets, interconnecting the sections 2, 3. In a further modification, Fig. 3, all of the sheets are rigidly connected to the 'framework 5, each channel section 11 being provided with a hollow part cylindrical rotary valve 20 each connected to a common control linkage, not shown. An axially slotted section 23 adjacent the upper edge of each valve ensures flow through the vents when the valves are rotated fully anti-clockwise, Fig. 3. All of the sheets in the arrangement shown in Figs. 1 and 2, may be rigidly secured to the framework 5, and filter sections may be fixed between them.
Patent GB-1182445-A (GB)
Title: Dyeing and Printing Fibrous Materials containing Polyester Fibres and Polyamide Fibres
IPC: D06P3/82
Filed: 1967-06-30
Abstract: 1,182,445. Dyeing and printing polyesterpolyamide mixtures. BADISCHE ANILIN-& SODA-FABRIK A.G. 30 June, 1967 [2 July, 1966], No. 30308/67. Heading D1B. Mixtures of polyester (e.g. polyethylene and polycyclohexane terephthalates) with polyamide fibres (e.g. wool #-caprolactam, adipic acid-hexamethylene diamine, omega-aminoundecanoic acid, silk) are dyed or printed by applying thereto successively or simultaneously (1) an aqueous dispersion of one or more finely divided disperse dyes and a dispersing agent, and (2) an aqueous solution of (a) one or more anionic dyes (b) an anionic assistant (c) an adduct of 2 to 8 moles of ethylene oxide and 1 mol of a C 6 -C 18  aliphatic alcohol or 2 to 6 moles ethylene oxide and 1 mol alkylphenol having 6 to 15 C atoms in the alkyl chain or an adduct of 2 to 15 moles propylene or butylene oxides and 0 to 10 mole ethylene oxide to 1 mole of an alkylphenol having 6 to 15 C atoms in the alkyl group or a C 1 -C 20  aliphatic alcohol, and (d) an adduct of 1 to 2 moles ethylene oxide and a hydroxybenzene or naphthalene compound which may be substituted in the aromatic nucleus, at temperatures below the absorption temperatures of the dyes, and fixing the dyes by steam treatment at 90‹-130‹C. Steam treatment may be preceded or followed by a dry heat treatment at 185-215‹C. The absorption temperature is the minimum temperature at which the dye is taken up by the substrate. Preferably solution (2) contains, per 1000 parts by weight, at least 5 parts of (b), 5 to 30 parts of (c) 5 to 40 parts of (d) and the weight ratio (b):(c) is preferably 0.25:1 to 2:1. Dyeing of even shade on both fibres are obtained.
Patent GB-992249-A (GB)
Title: Electrical impedance devices
IPC: H01P7/00
Filed: 1961-08-23
Abstract: 992,249. Transformers and inductors. U. L. WERTANEN. Aug. 23, 1961, No. 30439/61. Heading H1T. An inductor or transformer comprises a loop of two insulated coaxial conductors, the conductors being connected in series with each other and enclosing at least one additional inner conductor. The series-connected coaxial conductors and the additional conductors may form the primary and secondary (or vice versa) of a transformer. Fig. 2 shows a transformer using two loops, the innermost conductors 13 of the loops being connected in parallel and forming the primary of the transformer. The course of the secondary may be followed from the terminal lead 7, around the two outermost conductors 16 connected in series, then successively around the inner conductors 15 and 14 connected in series, to the terminal lead 10. The Specification also describes a transformer using four such loops. One of the terminals 7, 10 may be connected to one of the terminals of the innermost conductors 13, thereby converting the transformer to a two-terminal device. Cooling fluid may be passed through the innermost conductor. A single innermost conductor may be replaced by a group of conductors as shown in the section of Fig. 1d.
Patent GB-465174-A (GB)
Title: Process for the manufacture of polyazodyestuffs
IPC: C09B35/00
Filed: 1935-11-04
Abstract: Polyazo dyes are made by coupling one mol. of a disazo dye of the general formula R3--N = N--R1--N = N--R2 (R1 = residue of a diazo component, R2 and R3=residues of unsulphonated dihydroxy- or aminohydroxy coupling components of the benzene or naphthalene series which couple at least twice), calculated for each molecular proportion of the said coupling components, with one or two mols. of the same or different diazo compounds, either simultaneously or successively in either sequence.  When R1 = a residue of the benzene series the process may be modified by coupling an azo compound of the general formula R1--N = N--R2, in which R1 bears a substituent capable of being converted into an amino group, with one or two mols. of the same or different diazo compounds, converting the said substituent of R1 into the amino group, diazotizing, coupling with the component R3 and finally coupling with one or two mols. of the same or different diazo compounds.  R1 may be a residue of the benzene, naphthalene, diphenyl, diphenylamine or diphenylurea series which may be substituted, e.g. by nitro or sulphonic acid groups and R2 and R3 may residues of resorcinol m-aminophenol or 2-amino 6- or 7-naphthol.  They dye leather in intense brown shades fast to acids and alkalies.  The disazo dyes used as starting materials may be made by coupling 1 mol. of a diazo compound containing at least one substituent convertible into an amino group, e.g. nitro or acylamino, with 1 mol. of R2 or R3, converting the said substituent into the amino group, diazotizing and coupling with R3 or R2, or by coupling the tetrazo compound corresponding with R1 and coupling with R2 and R3.  The following dyes are described in examples: (1) 4-41-diaminodiphenyl-2 : 21-disulphonic acid \sQ resorcinol (2 mols.) \sx p-sulphanilic acid (2 mols.), (2) the dyestuff of (1) is coupled with diazotized p-sulphanilic acid (2 mols.), (3) p-sulphanilic acid --> resorcinol \sM p-nitroaniline (reduced) <FORM:0465174/IV/1> A table of similar combinations is given in which the following additional components are specified: R1 : benzidine, p-phenylenediamine sulphonic acid, p<1>-aminobenzoyl-p-phenylenediamine, 1 : 3-phenylenediamine-2-chlor-5-sulphonic acid; diazo components; primuline sulphonic acid, 1-naphthylamine-4-sulphonic acid, picramic acid.  According to the Provisional Specification R2 and R3 may be the residues of unsulphonated diamines of the benzene and naphthalene series, e.g. m-phenylenediamine.
Patent GB-1391916-A (GB)
Title: Enhancing the recovery of oil by secondary and or tertiary recovery techniques
IPC: E21B43/20
Filed: 1972-06-29
Abstract: 1391916 Wells EXXON PRODUCTION RESEARCH CO 29 June 1972 [15 July 1971] 30533/72 Heading E1F Tertiary recovery of petroleum comprises injection of an aqueous solution of a surfactant which is a salt of a base and a mono-, di- or tri-alkyl-1, 2-dimethyl-benzene sulphonic acid, the alkyl group(s) having at least 6 carbon atoms. The base may be derived from an alkali or alkaline earth metal, ammonium compound, or amine or amino alcohol.
Patent GB-1187503-A (GB)
Title: Improvements in or relating to Stencil Blanks Comprising Stencil Sheets Perforable by Electric Sparks
IPC: B41N1/24
Filed: 1967-07-04
Abstract: 1,187,503. Laminated stencil blanks. KONTOR KEMI A.S. 4 July, 1967 [11 July, 1966], No. 30647/67. Heading B5N. A stencil blank for perforation by electrical sparks comprises a backing sheet and a stencil sheet which is of inherently electrically conductive synthetic resin or which has at least one layer of such material. Suitable synthetic resins are polyolefins such as polyisobutylene, which have been subjected to bombardment by electrons; polyamides subjected to vacuum pyrolysis at 850 C.; and polymers treated with tetracyano-quino-di-methane. The stencil sheet may be formed of two bonded resin layers with different conductivities, or of a thin paper sheet containing finely dispersed carbon particles coated with the resin. The backing sheet is of conductive paper or of paper with conductive coating.
Patent GB-1072401-A (GB)
Title: A supporting element for use in a window dressing or display device
IPC: A47F11/02
Filed: 1964-08-04
Abstract: 1,072,401. Collapsible display devices. B. ROHRBACH. Aug. 4, 1964 [Feb. 21, 1964], No. 30663/64. Heading G5C. A display device including a collapsible support formed of hingedly connected cardboard or plastics panels is held in erect condition by a tongue 5 hinged to one of the panels, the support being, e.g., tapered or slotted at one end so as to be interconnectible in plug-andsocket manner with a similar element. A planar member 6 may be attached to or comprise one of the panels, or each panel may be extended to one side (Fig. 8, not shown). A member 6 may be attached to a pair of supports at right-angles to one another and a continuous wall of members 6 may be formed.
Patent GB-284816-A (GB)
Title: Improvements in or relating to electrical motor controlling systems
IPC: H02P1/58
Filed: 1926-12-03
Abstract: 284,816. Lithgoe, J., and Tinsley, H. Dec. 3, 1926. Drawings to Specification. Protective systems. - Relates to control and protective systems for a number of electric motors, for example the motors of coal-cutting or conveying apparatus in mines, each motor having an earthed trailing cable leading back to a remote switch and distribution board according to known practice. The invention consists in the provision of a low-voltage earthed circuit for interlocking and retaining the hand-actuated main switches of the motors, so that the motors can only be switched-in in a given order, and so that damage to any motor causes the switching-out of the faultv motor and of all those motors that come after it in the given order. The drawings illustrate the invention in application to a set of jigging conveyers travelling along cross-cuttings and delivery cuttings of a coal-mine. Specification 209,831 is referred to.