baber/WOPTO huggingface dataset:
Patent GB-1087009-A (GB)
Title: Process for the production of cyanate esters of phenolic resins
Inventor: GRIGAT ERNST
IPC: C08G8/28
Filed: 1966-05-23
Abstract: Phenolic resins are converted into their cyanate esters by reaction with cyanogen chloride or bromide in water or an inert organic solvent i.p.o. a base which is present throughout the reaction in an amount less than that equivalent to the cyanogen halide added. Suitable resins are novolak and resole resins, and also adducts of phenols and e.g. vinyl ethers. Preferred are novolak resins of 600-1500 molecular weight.  The base may be an alkali metal hydroxide, carbonate, bicarbonate, alcoholate, an alkaline earth metal hydroxide, or a tertiary amine, e.g. NaOH, KOH, Ca(OH)2, Ba(OH)2, NaHCO3, Na2CO3, K2CO3 Li2CO3, NaOCH3, trimethylamine, triethylamine, tripropylamine and diethylcyclohexyl amine. Suitable solvents are alcohols, ketones, ethers, esters, nitriles, amides, sulphoxides, sulphones and aromatic and aliphatic hydrocarbons, which may be nitrated or halogenated, and water.  Mentioned are MeOH, EtOH, acetone, Et2O, MeCN, ethyl acetate, dimethyl formamide, benzene, petroleum ether, nitrobenzene, nitromethane, CHCl3, CCl4, chlorobenzene, and dimethylsulphoxide. The reaction may be conducted between - 30 DEG  and 70 DEG  C.  In examples, novolaks from phenol and from p-t-butylphenol and formaldehyde, and a resorcinol/formaldehyde condensate are reacted in acetone i.p.o. triethylamine with cyanogen chloride or bromide equivalent to all or part of the OH groups of the resin.
Patent GB-149913-A (GB)
Title: Improvements in or relating to resilient wheels
IPC: B60B9/26
Filed: 1920-08-04
Abstract: 149,913. Amsler, A. J. Aug. 6, 1919, [Convention date]. Spring wheels with continuous outer rigid ring and metal springs other than helical and volute springs.-Wheels comprise two groups of resilient spokes on the hub or rim abutting against rigid lugs on the rim or hub and so arranged that the distortion of the spokes of each group due to the stresses both in the planes of the wheel and at right angles thereto, takes place in one direction only from the neutral or unloaded position. In the construction illustrated in Figs. 2 and 3, the groups of spokes 1, 2, 3, 4 and 1', 2', 3<1>, 4<1> are arranged in pairs as shown in the plane of the wheel. The pairs of spokes are secured rigidly to the hub and have a sliding engagement with oppositely arranged angular lugs 5, 5<1> on the rim or vice versa. In the construction shown in Figs. 4-6, the pairs of spokes 1, 1<1> are arranged transversely of the wheel. The inner ends of the spokes have a spherical portion 6, 6<1> which fits a spherical socket 7, 7<1> and terminate in a square part 8, 8<1> which project into a square opening 9, 9<1>, normally lying against the sides 17, 19 and 17<1>, 19' thereof. The outer ends of the spokes have a radial groove 13, 13<1> which coacts with a groove 14, 14<1> on a fixed part of the rim to form a race for a ball 12, 12<1> on which the spoke slides and pivots. The parts are arranged so that the line of division of the ball races is at an angle of 45 degrees to the plane of the wheel and corresponding parts of the different groups of spokes are arranged oppositely. The Specification as open to inspection under Sect. 91 (3) (a) also describes a modification in which the spokes are inserted in radial slots in the hub. The spokes are enlarged near their inner ends so as to have a rolling engagement with the sides of the slots while clearance is allowed between the outer end of, the slots and the spokes. This subject-matter does not appear in the Specification as accepted.
Patent GB-1038520-A (GB)
Title: Electrical connector assembly
IPC: H01R12/55
Filed: 1965-05-31
Abstract: 1,038,520. Two-part couplings. AMP Inc. May 31, 1965 [June 8, 1964], No. 23002/65. Addition to 1,029,907. Heading H2E. A socket contact comprising two axially aligned spaced tubular portions 31 connected solely by spring contacts 30 extending helically about the axis of the tubular portions, as described in the parent Specification, is mounted in a housing 20 which has an aperture at the top in alignment with the openings at both ends of the socket contact and a wall 36 at the bottom which is pushed out when a pin is inserted so that the pin can pass completely through the contact and the housing. The wall 36 is present so that when the housing is dip soldered into position in a printed circuit board 10 the solder does not enter inside the housing. The wall 36 may be held to the housing 20 by a weakened portion 35 running all round the wall 36 or only partially round the wall so that the wall is not punched completely out by insertion of the pin but merely hinges on the unweakened side. In an alternative construction the wall 36 tapers to the middle where there is a pin-point aperture to form a starting point for opening up the wall (Fig. 5, not shown). A plurality of printed circuit panels may be stacked and the same pin member passed through a series of aligned socket members.
Patent GB-375598-A (GB)
Title: Improvements in and relating to loud speakers and like apparatus
IPC: H04R9/04
Filed: 1931-08-14
Abstract: 375,598. Loud-speakers. SOC. FRANÃAISE RADIO-ELECTRIQUE, 79, Boulevard Haussmann, Paris. Aug. 14, 1931, No. 23012. Convention date, Aug. 14, 1930. [Class 40 (iv).] A loud-speaker comprises a plu. rality of conical diaphragms c1, c2, Fig. 1, of different dimensions, each flexibly supported at both ends and at one end from a support common to all the diaphragms, and a moving coil B driving one only of the diaphragms. Preferably the cones face in one direction and the smaller ends of the cones are attached to a support comprising two rings P, b, Fig. 2, and a centre piece a interconnected by arms O, X, the outer ring P serving to mount the support and the cones being attached to the portions a, b. Preferably the smaller cone c1 is flexibly supported from the surface of the larger cone c2. The cones c1, c2 are responsive to different ranges of vibrations. According to the Specification as open to inspection under Sect. 91 (3) (a) the diaphragm c2 may be driven by a second moving coil. In this modification, the magnetic system comprises an annulus of soft iron placed between the inner and outer polepieces, Fig. 1 (Cancelled), (not shown). This subject-matter does not appear in the Specification as accepted.
Patent GB-690126-A (GB)
Title: Improvements in or relating to taps for controlling the flow of fluids
IPC: F16K31/58
Filed: 1950-09-20
Abstract: 690,126. Taps or cocks. BOURNER & CO. (ENGINEERS), Ltd., F. H., and BOURNER, F. H. Sept. 19, 1951 [Sept. 20, 1950], No. 23069/50. Class 135. In a tap or cock in which the valve member or jumper 16 closes against an annular seat 14 against the supply pressure, the jumper is urged towards its seat by a spring engaging the jumper or its stem 17 so that if any back pressure occurs on the outlet side of the tap when the tap is open, the jumper closes automatically to prevent any return flow. As shown, the spring 32 acts on the stem 17 which is guided in a fluted anti-splash member 18. The latter has a tapered portion 26 and is supported on a shoulder 27 in a nozzle 24 forming part of an internally threaded sleeve 21 which is rotatable on an externally threaded spigot 12 by means of a capstan handle 23. The sleeve 21 is sealed by a ring nut 31. A hexagonal check valve 29 closes the upper end of the seat passage when the sleeve 21 is removed from the spigot 12. Reference has been directed by the Comptroller to Specification 599,386.
Patent GB-1077814-A (GB)
Title: Improvements in or relating to rotary photographic exposure equipment
IPC: G03B27/16
Filed: 1965-05-31
Abstract: 1,077,814. Contact printing apparatus. W. MOLL. May 31, 1965 [May 30, 1964; Aug. 1, 1964; Feb. 5, 1965], No. 23107/65. Heading G2A. A rotatable cylinder 2 for supporting printing sheets is housed within an enclosure formed of two half-cylindrical shells 4, 5 hinged together along one edge; a series of tubular fluorescent lamps 8 are disposed inside each half-shell in an arcuate array. The half-shells can conveniently be pulled open or closed by a handle 22, and are constructed so that they remain open in any position to which they are moved. This is achieved by cantilever arms (14, 15), Figs. (not shown) 3 and 4, attached to the end walls of the shells, the arms ending in pinions (42, 43) which mesh with each other and are rigidly secured to spindles (10, 11). The cylinder 2 is electrically driven, and the printing sheet (D) is held firmly on its surface by vacuum means acting from within the cylinder. The negative is held against it by a transparent foil which is wrapped round the cylinder. The foil (35), Figs. 5 and 6 (not shown), is secured at one end to a ledge (36) on the cylinder (2), and is initially coiled on a supply reel (46) which is mounted by a spindle (47) on the cantilever arms (48, 49), the arms themselves being mounted on the main shaft (7) which carries the cylinder. As the arms (48, 49) are pivoted on the shaft in the direction U, the foil is pulled off the reel (46) and smoothly wrapped round the cylinder, the ends of the spindle (47) latching behind a spring catch (54).
Patent GB-1267459-A (GB)
Title: Manufacture of striation-free quartz glass articles
Inventor: LOUGHRIDGE FREDERICK A
IPC: C03B3/00
Filed: 1969-05-06
Abstract: 1,267,459. Quartz glass. G. T. E. SYLVANIA Inc. 6 May, 1969 [6 May, 1968], No. 23126/69. Heading C1M. Granular crystalline quartz 2 (e.g. sand) is placed in a quartz glass container 1 which is evacuated (via line 3) before heating the container to the softening temperature of quartz (in furnace 4), smooth and rounded portions 9 of quartz then being separated from the softened container (e.g. by shearing with blades 6, 7) and fed to a melter 14. The container 1 is preferably tubular. In melter 14 the molten quartz may be drawn into tubing 17 free from striations caused by entrapped gases. Preferably a non- oxidizing gas is maintained in melter 14, e.g. 90% N 2 -10% H 2  by volume. Tube 1 is preferably heated to about 1950‹ C.
Patent GB-760472-A (GB)
Title: Improvements in or relating to rotary needle cylinder stocking knitting machines
IPC: D04B9/46
Filed: 1952-09-16
Abstract: 760,472. Knitting-machines. MORETTA, G. Sept. 16, 1952 [Oct. 2, 1951; Feb. 23, 1952], No. 23257/52. Class 74 (2). Patterning mechanism for effecting selection of the needles of a circular machine comprises a series of selector bits 40 operative on the butts of jacks 14 and moved out of operation by levers 86. The levers are caused to pivot to move the bits 40 into an inoperative position when arms 62 mounted in guides are raised by lugs on a series of pattern chains 65 to cause cam formations 60 on the arms 62 to move rods 54, engaging the levers 86, longitudinally. The bits are held in an operative position for making a selection, by springs 41. A drum 82, which has a step-by-step rotation, operates mechanism 75 ... 78 by a cam 80 fixed to its surface to cause rod 75 to engage all of the levers 86 and move them simultaneously such that the selector bits are all rendered inoperative.
Patent GB-519972-A (GB)
Title: Apparatus for masking electric lamps and other lighting means
IPC: F21V13/10
Filed: 1939-08-12
Abstract: 519,972. Lampshades. GAUTIER, A. Aug. 12, 1939, No. 23286. Convention date, Jan. 26, 1939. [Class 75 (ii)] An electric lamp bulb 2 is masked during air raids by a bell-shaped member 1 and a cupshaped cover 5 formed with a threaded connection 3, 4. The bottom of the cover 5 is formed with a light-emitting aperture 9. The members 1, 5 are suitably formed by thin aluminium stampings having reflecting inner surfaces and black "crackled" and matt finishes respectively on their outer surfaces. The member 1 is secured between inner and outer rings 6, 7 of an electricity insulating material resting on the lamp bulb or secured to the lamp socket. For normal use the cover 5 is removed.
Patent GB-606519-A (GB)
Title: Constant pressure lubricator for stiff lubricant
IPC: F16N11/04
Filed: 1945-09-10
Abstract: 606,519. Lubricating. THIRION, J. Sept. 10, 1945, No. 23286. Convention date, May 15, 1940. [Class 12 (iii)] A lubricator with grease ejected by a spring piston is given a substantially.constant expulsion pressure by the transmission between the spring and the piston including a triangular lever member, whereby the leverage is automatically varied to compensate for the reduction in pressure of the spring as it expands. As shown in Fig. 1, the expelling piston 2 is forced downwardly by a spring 3 acting through a sliding cup member 4 on the upper vertices of triangular levers 5 pivoted at 6 with the lower vertices depressing the piston 2, the falling pressure of the spring being compensated by the increasing length of its effective lever arm and the decreasing length of the effective lever arm applying pressure to the piston. The grease charge is filled through a duct in the piston stem. In the form shown in Fig. 9, the expulsion piston is formed by a rod 8 sliding in a guide-piece 9 fitted in the casing 1, the rod also carrying a cover piece 7 sliding on the casing. A frame 15 with side cheeks 15a is shrunk on the guide-piece 9 and serves to support the pivots 22 of triangular levers 19 and an abutment plate 16 for the spring 18 which depresses a cup-piece 30 slidable on the rod 8 and engaging the upper vertices of the triangular levers 19 to depress by the lower vertices of such lever a flange washer 20 on the rod 8. The filling charge is forced past a ball fitting 13 in the top of the rod to enter the casing by a duct 11 until its port 11a is shut by the rising of the rod. Discharge of grease is effected through a lower duct 12a, 12 in the rod and this discharge may be regulated to compensate for temperature changes of viscosity through a valve device as shown in Figs. 10, 11, where a ring 31 with a channel 32 of varying size is manually or thermostatically adjusted around the re-entrant passageways 35, 36 in the discharge piece 10.
Patent GB-1499669-A (GB)
Title: Preparation of carboxylic acids by an oxidation process
IPC: C07C51/31
Filed: 1975-05-23
Abstract: 1499669 Carboxylic acid preparation IMPERIAL CHEMICAL INDUSTRIES Ltd 23 May 1975 [24 May 1974] 23319/74 Addition to 1366082 Heading C2C [Also in Division B1] In the preparation of carboxylic acids by oxidation of a liquid alcohol and/or ketone with nitric acid, e.g. adipic acid by oxidation of cyclohexanol/cyclohexanone, the reaction temperature is controlled by having a set of surface cooling elements above each one of a plurality of feeding means. The feed means may be a pipe with a plurality of openings and the cooling means may be horizontally disposed banks of steel tubes.
Patent GB-762813-A (GB)
Title: Pipe couplings
IPC: F16L37/12
Filed: 1954-08-12
Abstract: 762,813. Pipe couplings. ROWLAND, R. H. Aug. 10, 1955 [Aug. 12, 1954], No. 23410/54. Class 99(1) A pipe coupling particularly for horticultural appliances such as spray lines comprises in combination a plate-like flange 5 on the end of one pipe 4, a flange 8 on the other pipe 7 which is facially recessed to receive the plate-like flange, a part 10 secured to or formed integrally with the recessed flange which overlaps the recess and behind which an edge of the plate-like flange can be engaged and a clamping member 12 pivotally mounted on the recessed flange in a position in which it is adapted to engage a bevelled edge of the plate-like flange with a wedging action at a point opposite the part which overlaps the recess. The flanges may be integral with or secured to the pipes. A part such as one corner of the plate-like flange may be cut away and a complementary projection 14 may be formed in the recess. A resilient washer 15 is adapted to be squeezed between the flanges to form a seal.
Patent GB-738658-A (GB)
Title: Piston or shuttle valves
Inventor: MASHEDER HENRY
IPC: F16K31/44
Filed: 1952-09-18
Abstract: 738,658. Valves. GORDON & CO., Ltd., J. Sept. 14, 1953 [Sept. 18, 1952], No. 23472/52. Class 135. A piston valve 2 controlling the operation of a pneumatic motor co-operates with a pressure inlet port 1 and two working ports 7, 8, the latter, besides being connected to the motor, each connecting with an auxiliary exhaust passage 11, 12 containing an auxiliary valve 17, 18. These auxiliary valves each contact a lever 19 so that, when valve 2 is moved to apply inlet pressure to one of the working ports, the auxiliary valve associated with that port is shut by the incoming pressure fluid and the other auxiliary valve will be opened to provide the motor with a larger exhaust passage. The normal exhaust passages 9, 10 are situated outside the working ports.
Patent GB-359606-A (GB)
Title: Improved means for producing fluid tight joints between rotating or oscillating shafts and housings therefor
IPC: F16J15/34
Filed: 1930-08-06
Abstract: 359,606. Stuffing box substitutes. RAM, G. H. E. DE, 125, Avenue de la Reine, Boulogne-sur-Seine, France. Aug. 6, 1930, No. 23580. Convention date, Sept. 3, 1929. [Class 122 (v).] Means for maintaining a fluid-tight joint between a rotating or oscillating shaft 1 and its housing 2 comprises one or more discs 4 bearing resiliently against radial surfaces 3, 6 on the shaft and housing respectively, with or without the interposition of packing 5, 6. The bearing pressure of the disc is adjusted by a set screw 8 in the housing adapted to move the shaft relatively to the housing. Alternatively the collar 3 may be adjustable relatively to the shaft. The disc 4 may be initially flat or dished. The Specification as open to inspection under Sect. 91 (3) (a) states also that the discs may be fixed to the shaft or to the casing.
Patent GB-964493-A (GB)
Title: Comb roller adjustment mechanism for electric dry shavers
IPC: B26B19/42
Filed: 1963-06-13
Abstract: 964,493. Dry shavers. SPERRY RAND CORPORATION. June 13, 1963 [June 18, 1962], No. 23621/63. Addition to 876,252. Heading B4B. Comb rollers 32 of a dry shaver are each mounted on extensions 29 of a frame plate 25 having inclined slots 26 engaged by pins 47 provided on an actuator 38 which is also provided with pins 39 engaging horizontal slots 42 in a casing wall 18, the actuator, which is urged against the wall 18 by a spring plate 48, having a manually-operable button disposed in a recess 44 in the wall 18, the arrangement being such that the comb roller is moved to its uppermost or lowermost position relative to the cutting edge of the cutter head according as the button is moved to the right or to the left respectively. The plate 25 has ears 27 which engage guide slots 23 in spaced projections 22 provided on casing walls 19 and flanges 28 which overlie aligning ribs 24 provided on wall 18. The casing preferably forms a removable hair pocket.
Patent GB-634944-A (GB)
Title: Improvements relating to the manufacture of pile fabrics
IPC: D04H11/04
Filed: 1947-08-27
Abstract: 634,944. Pile fabrics. CULL, S. C., and RODGER, W. 1. Aug. 22, 1947, No. 23609. [Class 142 (iv)] A pile fabric is made by forming loops in each of spaced parallel warp threads, applying the loops against a backing material coated with unset synthetic resin, thermosetting the resin, and shearing the loops to form the pile. A length of coated backing material 3 is arranged on a platen 13. A grid 4 is lowered by a hydraulic jack 10 to a level depending on the depth of pile required and the warp threads 1 are drawn across the upper surface of the grid by a ram in a cylinder 12. A blade holder 5A is lowered by the jack 10 until it is just above the grid. Movement of a ram in a cylinder 11 causes the blades 5 to move downwards successively between the grid bars to form the loops and to press them against the coated backing material. Heating elements are switched on to set the synthetic resin. The blades and holder are raised and a motor 8 is operated to move a cutter 6, mounted on carriers 7 having pinions meshing with racks 9, across the grid to cut the upper ends of the loops. The backing may be a woven textile fabric or felt, wood, glass or metal. The depth and density of the pile may be varied by altering the spacing of the grid from the platen and by varying the spacing of the grid bars and of the warp threads. The resin may be thermoset by radiant or conducted heat. Heating elements may be in the platen. Alternatively, the blades 5 may form one electrode and the platen the other electrode for high frequency alternating current used to set the resin. The warp threads may be spaced by a reed wherein the spacing of the dents may be adjustable. The warp threads may be strands of yarn, rove, or sliver. Specification 615,755 is referred to.
Patent GB-1113372-A (GB)
Title: Drums for electronic facsimile transmission apparatus
Inventor: WOLLNER GUENTER
IPC: H04N1/08
Filed: 1965-06-03
Abstract: 1,113,372. Facsimile drum scanner. FERNMELDEWERK ARNSTADT, VEB. 3 June, 1965, No. 23714/65. Heading H4F. A drum 1 for a facsimile scanning apparatus is closed at both ends except for a passage extending through a shaft 12 to an air connection socket 5 and has a number of openings in the cylindrical wall, Fig. 1 (not shown), whereby air may be drawn from socket 5 via the openings until an original for transmission is placed on the drum so as to cover all the openings, the drum shaft being supported in a self-aligning ball-bearing assembly 8, 11 which is provided with a labyrinth packing 10 and subjected to an axial force by pressure springs 13, 14 so as to maintain the connection to socket 5 hermetic. Two adjacent rows of openings extending longitudinally of the drum are made larger than the remainder to provide extra force for securing the edges of the original.
Patent GB-945027-A (GB)
Title: Improvements in or relating to latch needles of circular knitting machines
IPC: D04B35/02
Filed: 1962-06-20
Abstract: 945,027. Knitting-machines. AGULA S. A. June 20, 1962 [June 22, 1961], No. 23793/62. Heading D1C. A latch needle 1, for circular knitting machine in which the needle grooves are provided between radial lamellae extending from the circumference so that the grooves widen slightly radially outwardly of the cylinder, has provided on the flat portion 4 joining the needle butt 3 to the needle shank with a row of embossings 5-10 some of which protrude on one face while the others protrude by the same amount on the other face of the said flat portion. The row of embossings is provided near the edge of the portion 4 which corresponds to the outer edge of the lamellae and reduces the rocking of the needle in its groove.
Patent GB-980947-A (GB)
Title: Neutron generator
Inventor: REDSTONE REUBEN
IPC: H01J27/04
Filed: 1961-06-30
Abstract: 980,947. Heavy-ion-beam tubes. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 27, 1962 [June 30, 1961 (2)], Nos. 23823/61 and 23824/61. Heading H1D. A pulsed neutron generator using the D.T. reaction has an ion source comprising two parallel plate cathode members 7, 17 normal to a common axis, plate 7 having holes 10 which define the initial width of the beam, an anode 1 (of a coppernickel alloy, with stressrelieving slots 2) positioned between the cathodes and defining the width of the plasma in the ion source, and a target 13 forming a single stage acceleration gap; the generator also has means for maintaining a magnetic field in the ion source, the field extending deep into the acceleration gap so that the field lines over the entire distance between the cathode members 7, 17 are parallel to the axis. The target 13 may be of molybdenum or nickel, the gas being held in titanium or zirconium. The pressure in the tube may be 10-20 microns. The target 13 being exposed to the air is easily cooled during assembly and operation. Specification 850,950 is referred to.