baber/WOPTO huggingface dataset:
Patent GB-840334-A (GB)
Title: A process for the production of synthetic resins
IPC: C08G59/02
Filed: 1957-04-02
Abstract: Epoxy resins containing one or more epoxide groups per mol. and which may be hardened by means of acid or basic substances, e.g. amines, organic acid anhydrides, sulphochlorides, sulphonic acids or Friedel-Crafts catalysts, are obtained by reacting at least 2 mols. of an epoxy halide with 1 mol. of an acid salt of an aromatic hydroxy- or mercapto-carboxylic acid in a medium which does not contain more than catalytic amounts of water.  Alkali, alkaline earth or ammonium salts or salts of tertiary organic bases are suitable. In addition to carboxyl, hydroxyl or mercapto groups, which may be on the same or different nuclei of the acid, the aromatic rings may carry other substituents, e.g. alkyl, halogen or methoxy groups; the hydroxy, mercapto or carboxyl groups need not be linked directly to the aromatic nucleus.  Thus hydroxymethyl- or mercaptomethyl-benzoic acid may be used.  Other acids specified are o-, m- or p-hydroxybenzoic, or the corresponding mercaptocarboxylic acids, or of hydroxy or mercapto carboxylic acids derived from naphthalene, anthracene, diphenyl, diphenyl ether, diphenyl sulphide, diphenylmethane, dibenzophenone, diphenyl sulphone, diphenylsulphoxide and alkyl diphenylamines.  Suitable epoxy halides are epichlorhydrin, epibromhydrin, and 1-chloro-3,4-epoxybutane.  320 gs. Na p-hydroxybenzoate were suspended in 150 gs. epichlorhydrin containing 2.5 gs. dimethylaniline and the mixture refluxed at 117-123 DEG  C. for 11 hours.  The light yellow resin obtained after filtering off excess epichlorhydrin was melted with 0.8-1 part of maleic or phthalic anhydride and placed between aluminium plates and heated to 10-20 hrs. at 140 DEG  C.  In a similar manner a hardening mixture of dibutyl phthalate and diethylenetriamine was employed. The initial reaction may be performed in an inert solvent, e.g. a ketone, chlorinated hydrocarbon or ether.  The products may be used as binding materials, casting or moulding resins, laminates or lacquers.
Patent GB-250398-A (GB)
Title: Manufacture of tanning substances
IPC: C14C3/20
Filed: 1925-04-24
Abstract: 250,398. Farbwerke vorm. Meister, Lucius, & Br³ning, Krõnzlein, G., Voss, A., and Gõrtner, H. April 24, 1925. Addition to 211,145 and 240,003. Sulphonated ethers of phenolic resins.-The processes of the parent Specifications are modified by using aromatic or aliphatic compounds containing one or more sulpho groups capable of being easily exchanged instead of compounds containing halogen atoms which are easily exchanged. Thus a phenolic resin of high molecular weight may be condensed with such a compound containing a replaceable sulpho group, or a phenolic body of lower molecular weight may be condensed with the sulphonic acid and the product treated with a substance capable of converting a phenol into a phenolic resin; in the latter case the treatment with a resinifying agent may be dispensed with if the initial condensation product is subjected to a heating operation so as to effect further condensation. The products must be sulphonated if they do not already contain a sulpho group. They precipitate gelatine and convert animal hides into light coloured leather of good mechanical properties. According to examples, (1) the sodium salt of 1-#-sulphomethyl-2-oxynaphthalene-6-sulphonic acid (obtained by condensing sodium 2-oxynaphthalene-6-sulpho acid with sulphite and formaldehyde) is condensed in aqueous alkaline solution with the resin from phenol and formaldehyde; after acidifying, the sulphur dioxide is expelled by boiling and the product evaporated to a syrup; (2) the solution of sodium 1-oxybenzene-2-#-methylsulphonate obtained from phenol, formaldehyde and sulphite is mixed with disodium p-phenol sulphonate and condensed by heating at 140-150‹ C.; (3) sodium- 2-oxynaphthalene-1-#-sulphonic acid is condensed with m-cresol and the resulting m-cresylether of 2-oxy-1-oxymethylnaphthalene further simultaneously condensed and sulphonated by heating with formaldehyde and sulphite; (4) sodium 1-#- sulphomethyl-2-oxynaphthalene-6-sulphonate its heated with p : p'-dioxydiphenylsulphone at 140-160‹ C.
Patent GB-1310668-A (GB)
Title: Apparatus for separating copying sets
IPC: B41L1/04
Filed: 1971-04-22
Abstract: 1310668 Cutting and tearing apparatus HANS MEYER GmbH FABRIK FUR VORDRUCK-SYSTEME UND ORGANISATIONSMITTEL GROSSDRUCKEREI UND VERLAG 22 April 1971 [23 April 1970] 10761/71 Heading B4B [Also in Division B8] An apparatus for separating sheets from copying sets (i.e. sheets of writing paper interleaved with carbon paper and all glued together at one edge, the writing paper being perforated adjacent the glued edge) and simultaneously cutting- up the unwanted carbon paper comprises a carriage " A " for clamping the copying set at its edge opposite the glued edge and movable so as to bring the glued edge into engagement with a pair of gripping rolls 27 so that the latter separate the writing paper along the perforation lines while simultaneously feeding the carbon papers to a set of cutting-up rolls 28 thereby destroying the waste carbon papers. The carriage " A " includes a member 3 secured at its ends to side plate 8, Fig. 2, provided with rollers 14 adapted to run in grooves formed in side walls 17 of the apparatus. A bar 12 is also secured between the plates 8 and is attached to one end of a table plate 22, the other end of the table plate being slidable over a fixed plate 24. A clamping jaw 9 is secured to a bar 1 pivotally mounted between the plates 8, the bar being actuated by an eccentric shaft 2 and handle 10 to cause the jaw 9 to open or close in relation to the top of the bar 12. The gripping and cutting rollers 27, 28 are rotated by an electric motor 23 via gears 25, 26, 26<SP>1</SP>, the cutting roll comprising a series of coacting discs 34, Fig. 7, separated by resilient spacers 33. In operation, the unstuck edge of a copying set is moved against abutment pins 11, Fig. 1, on the jaw 9 and the latter then closed by the handle 10 to clamp the edge. The carriage is then moved forwardly against the action of a band 40 loaded by rubber straps 44 until the gripping rollers seize the glued edge of the set thereby pulling the carriage until it abuts an adjustable stop 29 causing the writing paper to be severed. The carbon paper continues to be fed past the cutting discs, the scrap being directed by a curved cover-plate 20 into a container.
Patent GB-869616-A (GB)
Title: Improvements in or relating to optical glasses
Inventor: BROEMER HEINZ
IPC: C03C3/155
Filed: 1958-04-03
Abstract: 869,616. Optical glass. LEITZ G.m.b.H., ERNST. April 3, 1958, No. 10812/58. Class 56. An optical glass comprises by weight 16-32% B 2 O 3 , 10-23% Al 2 O 3 , 25-50% La 2 O 3  and 8-31% of one or more oxides of a bivalent element or elements, the sum of the contents of B 2 O 3  and Al 2 O 3  amounting to at least 29% and at most 48À3%, the balance, if any, consisting of other compatible ingredients. The glass may additionally contain up to 10% by weight of zirconium oxide and/or up to 10% by weight of tantalum oxide. Specified bivalent elements are calcium, magnesium, barium and cadmium. The glasses may be made by smelting the ingredients in a platinum crucible at 1200‹- 1300‹C. and stirring the melt until it has cooled to about 1000‹C.
Patent GB-319680-A (GB)
Title: Improvements in and relating to reproducing magnets for telegraphones
IPC: G11B5/54
Filed: 1929-04-09
Abstract: 319,680. Stille, C. April 9, 1929. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 27, 1929]. No Patent granted (Sealing fee not paid). Electromagnetic apparatus.-Telegraphone reproducing heads are constructed so that the passage for the record wire between the magnets is automatically increased to permit passage of an enlargement such as might be produced in riveting or welding the wire after removal of a portion, as for example in resynchronizing it with a repaired picture film. The plates 3, 4, which carry the magnets 5, 6 and are spaced to provide a passage for the record wire 2, are mounted on right and left-handed screws 7<1>, 7<11> and 8<1>, 8<11> on discs 7, 8. The wire enters the head at a funnelshaped inlet and any enlargement 1 thereon contacts and rotates the disc 7 which is geared by toothed segments 11, 12 with the disc 8, and thereby separates the plates 3, 4 to allow the enlargement to pass until this, acting on the disc 8, returns the plates to normal position again as the enlargement passes from the head.
Patent GB-803855-A (GB)
Title: Improvements in or relating to niobium alloys
Inventor: HIX HUGH BISHOP
IPC: C22C27/02
Filed: 1957-04-03
Abstract: Niobium-base alloys for high temperature uses, e.g. as gas turbine parts, in high temperature reactors, oil refinery equipment and dies for high temperature working of metals have compositions within the following range in per cent by weight.  Nb 50.0 or more; Ti 1.0-30.00 and one or more of the following in total amount 1.0-20.0  Al up to 10.0; Be up to 5.0; C up to 2.0 Co up to 5.0; Fe up to 10.0; Mn up to 10.0; Mo up to 20.0; Ni up to 5.0; Si up to 2.0; Ta up to 20.0; W up to 5.0; V up to 10.0; Zr up to 20.0.
Patent GB-1037093-A (GB)
Title: An arrangement for holding photographic originals to be printed, particularly in automatic photographic printing machines
IPC: G03B27/62
Filed: 1964-03-16
Abstract: 1,037,093. Copy holders. GRETAG A. G. March 16,1964 [March 15,1963], No. 11044/64. Heading G2A. A holder for a photographic copy sheet comprises a plate with a window therein, and means for locating the sheet in register with.the window, the plate having internal passages with outlets adjacent the said window, such that the application of suction to the internal passages causes the sheet to be held against the outlets. In the form shown, the holder is a plate 1 having a window mask aperture 2, bolts 7 forming a guide for a film strip 6 which is the photographic original to be copied. The plate has a series of internal passages forming a manifold 3, which has a number of openings 5 surrounding the window 2. The passages can be connected via a conduit 4 to an exhaust pump, so that when the exhaust is operating the film sheet is held against the plate 1 by suction through the openings 5. The plate itself may be of transparent or matt white Plexiglass (Registered Trade Mark). An electromechanical system, Figs. 1 and 3 (not shown), is described for automatic control of the application and release of the vacuum, and operation of the light source and the exposure shutter.
Patent GB-1516273-A (GB)
Title: Stopping fluid flow in pipes
IPC: F16L55/10
Filed: 1976-03-19
Abstract: 1516273 Stopping pipes BRITISH GAS CORP 16 March 1977 [19 March 1976] 11094/76 Heading F2P Apparatus for cutting and stopping the flow along a plastics pipe comprises a cutter 1 movable by forcing means (hydraulic cylinder 7 and piston 8) and supported by support means (runners 2, 3; rails 5, 6 and clamping means 10) which can be anchored to the pipe 11, a first sealing member (stuffing bore 15) engaging on the cutter 1, the support means being fixed to a second sealing means (spool valve 20 having a rotatable spool 23) which is attached to a collar 26 which surrounds the pipe 11, both sealing means being adapted in use to allow the cutter  1 to pass therethrough and at least one clamping means 34 positioned on the pipe on either side of the collar 26 longitudinally along the pipe and attached to the support means. In use collar 26 with the sealing valve 20 is mounted on the pipe, the support 10 with blade 1 located therein is mounted on the valve 20 and secured by chains (not shown) and tension bars 28 fixed to clamps 34. The spool 23 is rotated to its open position and the blade 1 is forced through the spool 23 to cut through the pipe and stop the flow therein. After repair of the pipe the blade is withdrawn, the spool 23 is rotated to a shut position and the upper support structure is removed. The collar 26 and the valve 20 are then encapsulated to form a complete seal around the pipe.
Patent GB-1057332-A (GB)
Title: Improved die accelerator mechanism
IPC: B23D25/04
Filed: 1965-03-16
Abstract: 1,057,332. Shearing. E. R. BODNAR. March 16, 1965, No. 11126/65. Heading B3W. A flying shear comprises a frame 27, 28, a work-table 52, 53, a bed-plate 20 and a vertically reciprocable plate 21, which may be driven by a crank mechanism connected through a drive 24. and air clutch 25 by an electric motor 23. The clutch is controlled by a valve 26. Fastened to the bed-plate 20 are guide rails 19 and guide rails 18 are fastened to the movable plate 21. Slides 17 and 16 run in the rails 19 and 18, respectively, the slide 16 carries a platen 13 to which is attached a die half 10 and the slide 17 carries a platen 14 to which is attached a die half 11. Guide posts 15 attached to the platen 14 run in bushes attached to the platen 13. Prior to the cutting operation of the dies 10 and 11, the platens are accelerated to the speed of the strip (12), Fig. 2 (not shown), by mechanical means comprising two rods 31 which are attached to the platen 14 and are formed with rack teeth 33 meshing with pinions 34. The pinions are driven by a constant speed electric motor through a variable speed gearbox 36 and an air operated clutch 35. The return stroke of the platens is effected by pneumatic cylinder assemblies 39. These cylinders also act as buffers as the platens near the end of their forward stroke. There are hydraulic shockabsorbers 41 which cushion the return stroke of the platens. A laterally adjustable guide rail (44), Fig. 4 (not shown) engages the rod 31 and limits side play. A run-out table 53 is provided with a length gauge 56 adjustably mounted on a rod 57 which is secured at one end to the lower die half 11 and at the other end is slidable in a sleeve 58. A pneumatic cylinder 59 is linked to the sleeve 58 to rotate the sleeve and the gauge 56 through 90 degrees out of the path of the strip after the cutting stroke. The length of strip passing between the dies may be measured by a rotating measuring unit (61) Fig. 5, (not shown) feeding signals to a digital counter 62 which delivers an impulse to a solenoid (63) associated with a pneumatic valve 37 controlling the air-operated clutch 35. In a preferred form of the invention a triggering impulse is supplied to the solenoid (63) by a limit switch 64 which is movable along the runout table 53. An over-run limit switch (74) shuts off the entire installation in the event of excessive movement of the lower platen 14.
Patent GB-144446-A (GB)
Title: Improvements in electrical water heating apparatus
IPC: F24H9/20
Filed: 1919-05-07
Abstract: 144,446. Barr, J. F. May 7, 1919. Heating by electricity.-In a waterheater, a diaphragmoperated lever is arranged so that the switch cannot remain in the circuit-closing position except when the water is flowing to the heater. As shown, a double switch blade l is loosely mounted on a stud m and is acted on by a coil spring s so as to tend to rotate away from stationary contacts. A handle m<1> can move on the stud in a helical path determined by a pin and inclined slot n, and has an arm o bearing a spring-urged pin o<1>. This engages the switch blade through an angle of rotation sufficient to close the switch and cause a catch k' on an arm of the switch blade to pass a pawl j on the diaphragm lever i. If the diaphragm f is forced outwards by the pressure of water flowing to the heater, the pawl j will retain the switch in the closed position; otherwise the switch will slip back to its original position. Inclined tail pieces allow the pin o<1> to ride back over the switch blades. The heater comprises heating elements surrounded by a cylinder within a casing, from the upper part of which the hot water is drawn off. Specification 107,038 is referred to in the Provisional Specification.
Patent GB-1212813-A (GB)
Title: Dessert gel and composition therefor
Inventor: MOIRANO ARTHUR LAWRENCE
IPC: A23L29/256
Filed: 1969-03-04
Abstract: 1,212,813. Dessert gel. MARINE COLLOIDS Inc. 4 March, 1969, No. 11365/69. Heading A2B. A syneresis-resistant aqueous dessert gel comprises water containing potassium cations and having dissolved therein a mixture of locust bean gum and potassiumsensitive carrageenan in weight ratio of from 1 : 5 to 5 : 1 and calcium sensitive carrageenan in an amount sufficient to inhibit syneresis and not greater than the totail weight of locust bean gum and potassium-sensitive carrageenan. Potassium and calcium salts may also be present. Additional ingredients may include colourings, flavourings, sweetenings, and natural fruit juices. The potassium-sensitive carrageenan may be derived from Chondrus crispus, Gigartina stellata, pistillata, canaliculeta, or chamissoi, or Euchema cottonii, edule, or Okamura. The calcium sensitive carrageenan may be derived from Agardhiella, or Euchema spinsosum, serra, isiformae, muricatum, or uncinatum.
Patent GB-136453-A (GB)
Title: Improvements in Inking Pads.
Inventor: CLARKE WILLIAM ELMO
IPC: B41K1/54
Filed: 1919-05-07
Abstract: 136,453. Clarke, W. E. May 7, 1919. Inking-apparatus.-A stamp-inking pad consists of a block of non-absorbent material provided with a. covering of textile material which extends over the top and around the edges of the block and contacts with an absorbent pad charged with ink arranged beneath the block. As shown, a block 1 of wood rendered impervious to the ink is provided with a covering 2 of textile material, the edges 3 of which are secured by cement or other means to the underside of the block 1, leaving a space 4 to which is secured a felt or other pad 5 in such a way that it contacts with the edges of the covering. The pad 5 is saturated with the ink, and the whole is then placed in a container 6. The ink passes from the pad 5 to the exposed covering 2 by capillary action.
Patent GB-214830-A (GB)
Title: An improved drying machine
IPC: F26B17/08
Filed: 1923-04-28
Abstract: 214,830. Senior, J. W., and Atkinson, H. S. April 28, 1923. Endless band conveyers, articles carried by; air, controlling circulation of.-In apparatus for drying yarns &c. of the kind in which the material is traversed through the drying-chamber by a series of superposed endless perforated bands, air chambers C, C<2> provided within the bands are open at their tops and communicate through openings c - - c<2> with heaters E, E<1> through which air is forced by fans D, D<1>. The fan D<1> draws air from the lower part of the chamber and discharges it into the chamber c.
Patent GB-1143225-A (GB)
Title: Optical system
Inventor: STEPHENS ARTHUR LESLIE NALDER
IPC: G01D15/14
Filed: 1966-03-16
Abstract: 1,143,225. Recording apparatus. SAVAGE & PARSONS Ltd, March 16, 1966, No.11497/66. Heading G1J. [Also in Division G2] An array of galvanometer 1, Fig.1, or other instrument mirrors 2 are illuminated with light from a two dimensional source, such as a quartziodine, or a coiled tungsten lamp filament 5 and stop 6, by an optical system 7-9 which forms an aerial image 17 of uniform light intensity and negligible width which is then projected as a divergent flattened beam of light towards the mirror 2. As shown the cylindrical lenses 7, 8, have their cylinder axes perpendicular to that of cylindrical lens 9. Light from the aerial image 17 is reflected by an inclined plane mirror 10 and cylindrical mirror 11 on to the cylindrical mirrors 2, which, through cylindrical mirrors 12, 13 form a series of images on the photo-sensitive paper carried by the chart roller 14. Visual examination is permitted by mirror 15 and screen 16.
Patent GB-1235154-A (GB)
Title: Telecommunication exchange
Inventor: TRUEMAN ROY
IPC: H04Q3/42
Filed: 1968-03-08
Abstract: 1,235,154. Automatic exchange systems. ERICSSON TELEPHONES Ltd. 3 March, 1969 [8 March, 1968], No. 11512/68. Heading H4K. A telephone exchange includes a cyclic scanning store C which stores subscriber numbers and is pulsed to cyclically scan the lines corresponding to the stored numbers and supply an output signal to these lines. Wanted numbers are stored in register R and are compared with the number which the store C is instantaneously scanning. If they are the same, the scanning store position is frozen and the output signal applied to the line for a prolonged period. Gate G1, when enabled, allows pulses from generator P to advance the store C so that a signal is applied to each subscriber line terminal L in turn. Each terminal L contains a delay device d which is normally in circuit unless shunted by line relay contact l, the delay of device d being greater than the duration of the output signal from store C. A transistor may replace the line relay contacts. Calling condition.-Line relay contact I closes to route the output signal on line o through line c to routing equipment E and marks the line terminal on lead r. Equipment E marks routes through switching network S and returns a suspend signal to gate G3 which disables gate G1 and holds the output signal on line o. The switching network S establishes a route, opens contact l and signals equipment E to terminate the suspension signal so that store C is again supplied with pulses and resumes scanning. Called condition.-The number of the wanted line L is stored in register R and sent to routing equipment E and to equivalence gate G2 which compares the number in the register with the number of the line being scanned by store C. When these numbers agree, a pulse is sent to gate G3 whose output disables gate G1 to stop store C. The output signal on line o is prolonged and delay device d operates to supply a command signal to equipment E which establishes a route through switching network S. When the route is established, the register is cleared which removes the disabling signals so that store C is again supplied with pulses and resumes scanning.
Patent GB-913478-A (GB)
Title: A storable polychloroprene polymer solution
IPC: C09J111/00
Filed: 1961-03-29
Abstract: Storable solutions of rubbery chloroprene polymers in organic solvents contain (1) 0,1 to 20% of at least one aromatic hydroxy compound having at least two hydroxy groups, (2) 0,5 to 20% of at least one aliphatic carboxylic acid containing at least two carboxyl groups or an anhydride of such a carboxylic acid and (3) 0,5 to 25% of zinc oxide and/or a zinc salt (the oxide and/or salt being at least partially soluble in the chloroprene polymer solution) the percentages being based on the weight of chloroprene polymer in the solution.  Chloroprene polymers are polychloroprene and copolymers with styrene, acrylic acid, acrylonitrile, vinyl chloride, vinylidene chloride, chlorotrifluorethylene, butadiene, 2-methylbutadiene and dichlorobutadiene.  Mixtures with up to 30% of natural rubber, chlorinated rubber or butadiene-acrylonitrile rubber may also be used.  Specified solvents are benzene, toluene, xylene, cyclohexane, chlorobenzene, trichlorethylene, ethylene dichloride, methyl ethyl or butyl acetate, and methyl ethyl ketone.  Specified aromatic hydroxy compounds are pyrocatechol, pyrogallol, hydroxyhydroquinone, 4-tert.-butyl-1-2-dihydroxybenzene, or a phenolic resin which has been modified by substituting at least a part of the phenol by an aromatic hydroxy compound having at least two hydroxyl groups. Specified carboxylic acids are malonic, succinic, glutaric, adipic, maleic, itaconic, citraconic, citric and tartartic acids and their anhydrides, while specified zinc salts are zinc chloride, sulphate, carbonate, acetate, formate, stearate, maleinate, or the zinc salts of pyrocatechol or maleic acid.
Patent GB-1267676-A (GB)
Title: Variable resistance device
Inventor: SOBOL WOLDIMAR
IPC: H01C10/32
Filed: 1969-03-04
Abstract: 1,267,676. Variable resistor. RELIANCE CONTROLS Ltd. 3 March, 1970 [4 March, 1969], No. 11525/69. Heading H1S. A variable resistor device, including an arcuate resistance element 11, Fig. 1, mounted on an arcuate wall 12, on the base 16, the arcuate wall having an upstanding member or members 14 determining the minimum inner radius of the resistance element, is as disclosed in Specification 1,267,675.