baber/WOPTO huggingface dataset:
Patent GB-767700-A (GB)
Title: Improvements in photographic developer compositions
IPC: G03C5/26
Filed: 1954-08-03
Abstract: 767,700. Photographic developers. KODAK, Ltd. Aug. 3, 1954 [Aug. 3, 1953; Aug. 3, 1953], No. 22506/54. Class 98(2) A photographic developer composition, in wet or dry form, comprises an alkaline material, a 3-pyrazolidone silver halide developing agent, and an ene-diol compound of the general formula wherein X is O or NH, n is 0 to 3, and R is H or OH, except that when n is O, R is not H.: The 3-pyrazolidone developing agent may have the general formula wherein R 1  to R 5  can be H or alkyl or aryl groups substituted or not. Numerous 3- pyrazolidones. are specified, including 1- phenyl-2-acetyl-4 : 4-dimethylpyrazolidone. Numerous ene-diol compounds are specified, including iso-ascorbic. acid; d- and lascorbic acids, 6-desoxy-l-ascorbic acid, d- .glucoascorbic acid, l-alloascorbic acid, sorboascorbic acid, and w-lactoscorbic acid, and the corresponding imino-compounds. The activity and stability of the developer are both increased as compared with developers not containing both the ene-diol and 3-pyrazolidone compounds, and when the developer is free from silver halide solvents, it behaves as a strong surface latent image developer. In example 1, the developer comprises an aqueous solution of 1-phenyl-3=pyrazolidone, d-ascorbic acid, potassium bromide, and sodium metaborate, and its behaviour is compared with that of a glycine-carbonate surface latent image developer and with that of a latent image developer containing N-methyl-paminophenol sulphate and hydroquinone. In examples 2 and 3, development is effected with the developer of example 1 with its pH raised to 9.8 and, in example 3, with an increased bromide content. In example 3, sodium thiosulphate may be added to convert the developer to an internal image developer. In example 4 the developer contains 1 - phenyl - 3 - pyrazolidone, d - ascorbic acid, and sodium carbonate. In example 5, a table is given showing the photographic activity of various developers containing 3-pyrazolidone, ene-diol compounds, and mixtures thereof. In example 6, developing compositions are given containing sodium hexametaphosphate, sodium. carbonate, potassium bromide and iodide, 1- phenyl-3-pyrazolidone, 1-phenyl-5-mercaptotetrazole, and either iso-ascorbic acid or imino-d-ascorbic . acid, with or. without sodium sulphite. In a dry developing composition, the alkaline material may be sodium carbonate, caustic alkali, or sodium perborate. Specifications 542,502, 561,875, 581,772, 757,271, 767,699 and 767,705 [Group IV(b)] are referred to.
Patent GB-1553028-A (GB)
Title: Rectification apparatus
IPC: B01D3/04
Filed: 1977-05-27
Abstract: The separation column contains a plurality of vertically arranged mass transfer pipes (1) made of two concentric tubes (2 and 3). Each of the outer tubes (2) is provided at the top with its own condenser surface and at the bottom with its own evaporator surface. Both the mixtures fed and the rectification products withdrawn are in the gaseous state; the respective feed or withdrawal take place by means of orifices (4, 5) in the inner pipe (3) and by means of tubes (6, 7) at the ends of the mass transfer pipes (1). The liquid phase flows downwards on the inside of the outer tube (2). The gas phase ascends in the annular space between the concentric tubes (2 and 3). The inner side of the outer tube (2) can have grooves. <IMAGE>
Patent GB-1163342-A (GB)
Title: Filled Polyurethanes
IPC: C09K23/00
Filed: 1967-05-16
Abstract: 1,163,342. Filled polyurethanes. MOBAY CHEMICAL CO. 16 May, 1967 [24 May, 1966], No. 22793/67. Headings C3C and C3R. Polyurethanes having discrete particles of a solid therein are prepared by sprinkling solid particles into a liquid organic compound containing hydrogen atoms reactive with an organic polyisocyanate while the liquid is being stirred to form a slurry, subjecting the slurry to a shearing action to break agglomerates of solid therein into discrete particles, flowing the slurry in a thin film to allow entrapped air bubbles to escape, diluting the resulting slurry with additional liquid organic compound and thereafter mixing the resulting dispersion with an organic polyisocyanate. The product may be in cellular form in which case a blowing agent is incorporated into the additional liquid organic compound. The particles may be of zirconium silicate, gypsum, limestone, chalk, talc, silica, zirconium oxide, silicon oxide mixtures, calcium carbonate, carbon and opal fines, clay and especially barium sulphate and are preferably preset in amounts of from 15 to 4 parts per part of the reactive hydrogen containing compound in the initial slurry. The reactive hydrogen containing compounds are preferably those having a M.W. of at least 200, those specifically exemplified being a condensation product of glycerine and propylene oxide and of hexanetriol-1,2,6 and propylene oxide. Conventional blowing agents, emulsifiers, silicone oil stabilizers, and catalysts such as tertiary amines and/or organometallic compounds may be used in the production of the polyurethanes.
Patent GB-183377-A (GB)
Title: Improvements in or relating to combination locks
IPC: E05B37/16
Filed: 1921-08-27
Abstract: 183,377. Leeuw, J. de. Aug. 27, 1921. Addition to 163,805. Locks, permutation.-In a lock of the kind described in the parent Specification in which movement of the locking-bolt is controlled by a rotating member carrying a number of elements some of which have to be pressed in to release the member, and in which the elements are restored to their initial position by a plate mounted on the shaft which also carries the finger for pressing in the elements and the rotating frame, one of the elements is of special form, and when pressed in allows the frame to rotate but not the finger, and engages a member in the stationary frame which can be operated from outside the lock. This element 21 has a hook-shaped beak 22 and a notch 23. When all the necessary elements 5 have been pressed in by the finger 14 to bring their projections 12 in line with the notches 13 of the corresponding elements 7 of the stationary frame 3, the finger 14 is rotated until in contact with the stop 32, Fig. 6, on the rotating member 4 and then pressed to push in the element 21. This brings the notch 23 in the element into line with the blade 25 on the member 24, and also pins the finger 14 between the stop 32 and the beak 22 so that an unauthorized person finding the lock in its open position cannot move the finger to discover which of the elements 5 have been pushed in. To change the combination, it is necessary to move the members 7 so that different ones occupy the position of the one shown in Fig. 1 with the stop-disc 8 engaging between the projections 10, 11, requiring the corresponding element 5 to be pushed in to release the boltcontrolling disc 4. The members 7 occupying the position in which the stop-disc 8 engages behind the end projection 10 do not require their corresponding elements 5 to be pushed in. The member 24 is pushed forwards by its knob 29, causing the blade 25 to enter the notch 31 in the disc 4, and freeing the part 26 from its notch in the fixed casing 2. The finger 14 is then operated to push in the elements 5 forming the combination, the element 21 being undisturbed. The knob 29 is then turned, the part 26 rotating the stop disc 8 to bring notches 9 on it opposite the members 7, and the blade 25 rotating the disc 4 sufficiently to engage partially the elements 5 with their corresponding elements 7. The plate 17 is then pulled back by the knob 16 to place all the elements 5, 7 in their extreme position and the finger 14 is then operated to push in the elements 5 forming the new combination, these elements carrying the elements 7 with them. The knob 29 is then rotated back and the disc 8 locks the members 7 in their new positions and the part 26 enters its slot in the casing to lock the disc 8 by the projections 27. By rotating the disc 4 only sufficiently to engage the members 5 and 7, the setting dial may be used to set the new combination.
Patent GB-839361-A (GB)
Title: Improvements in chain-driven belt conveyors and chains therefor
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G17/42
Filed: 1955-08-08
Abstract: 839,361. Endless belt conveyers. MINING ENGINEERING CO. Ltd. July 13, 1956 [Aug. 8, 1955], No. 22829/55. Class 78 (1). [Also in Group XXV] In a belt conveyer of the kind in which the belt is carried on cross-members 3 extending between a pair of driving chains, each chain comprises lengths of closed link cable chain joined by connecting links (not shown), each length having at spaced positions along its length closed links 2 each formed with two opposed pairs of lugs 5 for detachable connection to a cross-member. Each end of the crossmember is formed with a recessed portion 8 in which two vertical flats 7 are provided, these flats being received between the pairs of lugs 5 and secured thereto by split dowels 9. Specifications 729,943, 737,583, and 740,906 are referred to. Reference has been directed by the Comptroller to Specification 762,595.
Patent GB-739117-A (GB)
Title: Pneumatic tire tread
IPC: B63B35/70
Filed: 1953-08-19
Abstract: 739,117. Pneumatic tyres. WINGFOOT CORPORATION. Aug. 19, 1953 [March 2, 1953], No. 22846/53. Class 144 (2). To reduce the tendency to cracking at the base of a tyre tread groove 8 the groove is formed with parallel or converging upper side walls 9, 10 each inclined at an angle less than 15 degrees to the radial and extending for at least one third the groove depth, and lower side walls 11, 12 which converge arcuately or rectilinearly to meet a groove bottom 13 at points C, D which at the respective junction points B, E of the upper and lower side walls subtend an angle less than 175 degrees but not less than 145 degrees with the upper side walls 9, 10. The groove bottom 13 may be substantially flat or of large radius curvature, and where the lower side walls 11, 12 are arcuate they may have radii greater than their depth and centred in the ribs defining the opposed upper side walls.
Patent GB-1113115-A (GB)
Title: Method of and apparatus for laying bituminous layers with seamless joints
IPC: E01C23/14
Filed: 1965-05-28
Abstract: 1,113,115. Joining bituminous paving. TEERBAU GESELLSCHAFT FUR STRASSENBAU m.b.H. 28 May, 1965 [30 May, 1964], No. 22879/65. Heading E1G. In making joints in bituminous paving, either on new construction or repair, the edge of the already laid area is heated by infra-red radiation to the normal laying temperature before applying the adjoining layer and compacting the joint area.
Patent GB-290483-A (GB)
Title: Improvements in and relating to steam, air and signal line connections
IPC: B61G5/08
Filed: 1927-08-31
Abstract: 290,483. Sullivan, C. E., and Zabolitzky, L. Aug. 31, 1927. Couplings, automatic. - A coupling head 6, Figs. 2 and 4, for train pipes 17, adapted to be carried by a hanger 1 on the end of a coach and to coact with a like head on the adjacent coach upon coupling of said coaches, is pivotally mounted on a bolt 13 which is carried by a tubular member 3, the latter being telescopically supported in a cylinder 2 suspended from the said hanger 1. The member 3 is secured in the cylinder 2 by a bolt 4 which passes transversely through the sides of said member 3 and through wedge-shaped slots 5 in the sides of the cylinder, and it is normally retained in a forward position with the ends of the bolt 4 at the apices of the slots 5 by a spring 8 mounted within the said cylinder and bearing against a plate 9 carried by the bolt 4. Each head is provided with ports 16, to which the pipes 17 are connected, fitted with gaskets 20 and with a projection 14, Fig. 5, adapted to engage an opening 15 with coacting head when the coaches come together. The gaskets of one head are each preferably provided with a projection 21, Fig. 6, adapted to engage a groove 22 in the opposing gaskets.
Patent GB-783652-A (GB)
Title: Improvements in or relating to circuits for reducing low-frequency distortion in television or other broad-band signal transmission systems
IPC: H04N5/16
Filed: 1955-08-09
Abstract: 783,652. Television. WESTERN ELECTRIC CO., Inc. Aug. 9, 1955 [Aug. 11, 1954], No. 22923/55. Class 40 (3). Relates to a circuit for reducing distortion and interference in television signals of the general type described in Specification 668,491 wherein a transmission channel 11 for the signals is bridged at 12 by a feedback loop comprising an input amplifier-sync. pulse clipper 13, an amplitude detector 14 responsive to the departure of the sync. pulse from a reference level to derive the envelope of the distortion, and an output amplifier 15. In accordance with the invention, the output amplifier is given a lowfrequency gain boost for the purpose of minimizing distortion introduced into the signal due to the quantized or step-like nature of the derived distortion wave. As illustrated, this is effected by arranging the output amplifier 15 with two paths 21, 25 in parallel feeding a common output valve 22. The upper path 21 receives the detected distortion signal appearing on capacitor C by direct coupling whilst the lower path receives the signal by A.C. coupling and serves to provide a gain boost over a band determined at its lower end by coupling network 26, 65, 63 and at its upper end by network 28, 29. The later elements are proportioned to decrease the gain at frequencies above half-line frequency. The overall amplifier in effect provides a high level of feedback over a band of distortion signals whilst restricting feedback of components at line frequency and above introduced by the action of the envelope detector. D.C. coupling from the common output valve 22 to bridging point 12 is by way of a gas diode 67. In an alternative embodiment, Fig. 3 (not shown), the desired gain characteristic for output amplifier 15 is obtained by the use of an amplifier with a uniform response followed by a filter having either a low-pass characteristic extending to half-line frequency or a band-pass characteristic extending from 60 c/s. to half-line frequency. In Fig. 6, valve 41 comprises the input amplifier and valves 48 and 49 the sync. pulse clipper. Valve 48 is cut off at the cathode by the current through valve 49 and conducts only during the positive-going sync. pulses. The output is obtained in amplified form via cathode follower 43. The envelope detector comprises valves 51 and 52, together with capacitor C, both valves being normally cut off and conducting only during a sync. pulse respectively to charge or discharge capacitor C until the potential across it assumes the level of the sync. pulse.
Patent GB-229353-A (GB)
Abstract: 229,353. Berliner Akt.-Ges. f³r Eisen giesserei und Maschinenfabrikation. Feb. 16,1924, [Convention date]. Void [Published under Sect 91 of the Act]. Roller presses.-A device for expressing liquid from peat and the like comprises a drum 1 with a straining liner on its inner surface and a drum 2, having strainers on its outer surface, within and eccentric to the. drum 1. the drums being caused to revolve with the same angular velocity between fixed end plates. The material is delivered to the space between the drums where they are further apart, and carried round to the point of greatest pressure. The outer drum is supported' on rollers 5 and rotated by gearing 9; the inner drum is supparted and rotated by a shaft 10. In order that the maximum pressure may be varied the bearings of the shaft 10 are free to slide under the control of pressure springs or of pneumatic or hydraulic pistons. Slides 14 divide the highpressure space into compartments but are withdrawn within the drum 2 during the remainder of their travel by rollers running in cam grooves 16. The slides 14 and the end walls may be formed with straining surfaces. The end walls need not extend above the shaft bearings. The material to be treated may be passed into the device by an endless bucket conveyer passing across between the drums or by apparatus similar to that used in gas works and comprising a trough which is pushed in from the side and then inverted to discharge its contents. An alternative charging arrangement is illustrated in Fig. 4. This comprises a pipe 19 which is provided wih a rack and reciprocated between the drums by gearing 24, 21, a segment 22 and a crank 23. The ends of the pipe are open and it is filled with material in receptacles 27 at either side and its contents are caused to discharge in the space between the drums by a piston which slides within the pipe but has its travel limited by fixed stops. The treated material may be discharged by means of an endless bucket chain, and another endless chain may carry scrapers or brushes to clear the straining surfaces.
Patent GB-1515004-A (GB)
Title: Lighting panel
IPC: F21V5/00
Filed: 1975-05-23
Abstract: 1515004 Lighting refractor BAUSCH & LOMB Inc 23 May 1975 [18 June 1974 1 May 1975] 22949/75 Heading F4R A refractor plate for a light fixture comprises a plurality of light-modifying elements 22 each having a base 26 facing incident collimated light and an axis of symmetry 24, the shape being such as to reflect critically the collimated light and then to refract the reflected light from the plate within a desired angular range. Each element produces a bat-wing light distribution within an annular cone from 25 to 60 degrees from the axis 24. In one form of element, as shown, polarizing layers 42 are present between a ring 34 and the main refractor portion 44 of the element 22. One component of the polarized ray is then reflected in the ring 34 back towards the source. In another embodiment, each element is frusto-conical with an inverted cone interior surface which produces two bat-wing shaped distributions with separate peak intensities (Figs. 9-11, not shown).
Patent GB-542833-A (GB)
Title: Improvements in or relating to the prevention of the autoxidation of oils, fats and fatty acids
IPC: C11B5/00
Filed: 1939-08-09
Abstract: 542,833. Prevention of autoxidation of chemical substances. SABALITSCHKA, T., and BOHM, E. Aug. 9, 1939, No. 22996. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 19, 1940.] [Class 91] [Also in Groups IV and VI] The autoxidation of fats, fatty oils, essential oils and fatty acids is inhibited by addition of a small quantity of an alkyl ester of gallic acid or a mixture of such esters. The starting materials may be in admixture with other materials in the form, for instance, of emulsions and creams. Experiments are described showing the effect of the addition of specified small quantities of gallic acid n-propyl ester to cod liver oil, of gallic acid methyl ester to arachis oil, and of gallic acid n-propyl ester to oleic acid. Examples are given of the addition of (1) gallic acid ethyl ester to arachis oil, (2) equal parts by weight of gallic acid methyl and n-butyl esters to lard, (3) gallic acid n-propyl ester to cod liver oil, and (4) a mixture of 30 per cent. gallic acid methyl ester and 70 per cent. n-propyl ester to oleic acid. The Specification as open to inspection under Sect. 91 also describes the prevention of the autoxidation of chemical substances in general, of which ethers and ascorbic acid are mentioned in addition to those above. An experiment is described showing the effect of the addition of specified small quantities of gallic acid propyl ester to pure peroxide-free ether, whilst further examples are included of the addition of (1) gallic acid ethyl ester to ethyl ether, and (2) gallic acid propyl ester to ascorbic acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-924497-A (GB)
Title: Improvements in or relating to sintered electric resistance heating elements
IPC: C22C32/00
Filed: 1959-07-03
Abstract: The high temperature part of an electric resistance heating element consists of an insulating refractory base having flame sprayed thereon particles each of the composition (Mo1-yMy) (Si1-xA1x)2 in which M is one or more of Ti Zr Hf Ta Nb V Cr and W, x is from 0,1 to 0,6 and y is from 0 to 0,7.  The particles form a layer 10-500m thick.  A ceramic component, forming up to 50% by volume of the layer may be included.  The ceramic component may be alumina, with or without silica or bentonite, and boron-containing substances may be added to include up to 0,3% by weight of boron in the layer. Specifications 731,616, 791,323, 899,464 and U.S.A. Specification 2,831,242 are referred to.ALSO:The high temperature part of an electric resistance heating element consists of a sintered mass of particles each of the composition (Mo1-yMy)(Si1-xAlx)2 in which M is one or more of Ti, Zr, Hf, Ta, Nb, V, Cr and W, x is from 0.1 to 0.6 and y is from 0 to 0.7.  A ceramic component, forming up to 50% by volume of the sintered mass, may be included. The ceramic component may be alumina, with or without silica or bentonite, and boron-containing substances may be added to include up to 0.3% by weight of boron in the sintered mass.  The particles of the appropriate composition are produced by mixing the constituent elements and heating under hydrogen.  The reaction product is then ball-milled to a particle size of 3-7m  mixed with alumina (with or without bentonite) extruded and sintered firstly at 1400 DEG  C. in hydrogen and then at 1700 DEG  C. in air.  The term "sintered mass" also includes the result of flame spraying particles of the appropriate composition on to an insulating refractory base. Specifications 731,616, 791,323, 899,464 and U.S.A.  Specification 2,831,242 are referred to.
Patent GB-382683-A (GB)
Title: Improvements in and relating to installations for the evacuation and treatment of household wastes
IPC: E03F1/00
Filed: 1931-08-14
Abstract: 382,683. Drainage systems ; treating refuse. GARCHEY, L. A., 18, Rue Felicien David, Paris. Aug. 14, 1931, No. 23008. Convention date, March 13. [Classes 33 and 111.] House refuse mixed with water is discharged from the kitchens of a building or group of buildings into closed conduits which are connected to means for separating the water, drying the solid matter and discharging it direct into an incinerator or into bins from which it can be conveyed by wagons to an incinerator. The refuse is collected with water in a receptacle 3, Fig. 1, beneath the sink 1 of a kitchen. Water overflows under a member 9 through apertures 11, a stand pipe 10 and a liquid seal 14. When the pipe 10 and a valve 12 at its lower end are lifted manually, the refuse and water pass through a bend 5, fitted with an inspection plug 8, into a pipe 6, common to several kitchens, and thence to a closed receptacle 16, Fig. 2. The receptacle 16 has an overflow 17 for water and is connected through a manually-operated or float controlled valve 22 and a pipe 19 to central treatment apparatus, shown in Fig. 5. The treatment apparatus comprises a receiver 21, a measuring- tank 27, a vacuum pump 32 connected to the tank 27, a centrifugal drier 28, and an incinerating or gas-producing furnace 39. Hot gases from the furnace may before passing into the stack 47, be used to heat a boiler 46 which supplies hot water to the buildings. The suction of the pump 32 draws the refuse from the receptacle 16 through the receiver 21 to the tank 27, the connecting pipes being provided with control valves. Float-operated switches 36, 37 connected to the switch-board of an electric motor driving the pump 32 ensure that the motor is stopped when the liquid level rises to a given height in either the receiver 21 or the tank 27. Liquid fuel may be supplied from a tank 51 to burners 50 in the furnace 39.