baber/WOPTO huggingface dataset:
Patent GB-1396422-A (GB)
Title: Photographic products and processes
IPC: G03C8/30
Filed: 1972-05-18
Abstract: 1396422 Silver halide photography POLAROID CORP 18 May 1972 [19 May 1971]  23480/72 Addition to 1378644 Heading G2C A photographic product comprising photosensitive silver halide is exposed, developed with an α,#-enediol developing agent to form a silver image and interacting the silver image with a compound of a metal more noble than silver, using at least 1% of noble metal based on the weight of silver present as silver halide. The invention also relates to a photographic product containing the silver halide, developing agent and noble metal compound. Preferably the silver image is formed by the diffusion transfer process and the noble metal compound is one of those listed in Specification 1378644. The developing agent is preferably ascorbic acid, isoascorbic acid, hydroxytetronic acid, dihydroxy acetone, dimethyl reductone or triose reductone.
Patent GB-896528-A (GB)
Title: Preparation of niobium oxide
IPC: C01G33/00
Filed: 1959-07-08
Abstract: Niobium values are recovered from an aqueous solution containing niobium in anionic form together with one or more metals of Groups III, IV, V and VIII of the periodic table, particularly iron, by contacting the solution with an anion exchanger and subsequently eluting the niobium values therefrom with an aqueous solution of a neutral salt, particularly sodium chloride.  Niobium hydroxide is precipitated from the resulting solution and calcined to the oxide. Iron, also absorbed in anionic form, is totally eluted before the niobium is taken up. Separate regeneration of the anion exchanger is unnecessary.  The initial solution may be derived from processing tantalite or colombotantalite ores with hydrofluochloric acid and contacting the solution so obtained with methylethyl ketone, thereby leaving niobium together with other metals in the aqueous phase. Suitable ion exchangers are aliphatic, aromatic or heterocyclic quaternary ammonium salts.  According to an example, a hydrofluoric acid solution containing niobium together with iron, manganese, titanium, tin and copper in substantial amounts was contacted with an anion exchanger resin at normal pressure, after which the resin was washed with distilled water.  The elution was effected with sodium chloride solution, which first removed iron quantitatively and thereafter niobium.  Niobium hydroxide was precipitated from the eluate with ammonia and the hydroxide was calcined to niobium pentoxide.  The ion exchange resin was regenerated by the sodium chloride treatment and, after washing with distilled water, could be reused.
Patent GB-1515704-A (GB)
Title: Recovery of base metal values from manganese-containing ores
IPC: C22B3/30
Filed: 1975-05-30
Abstract: 1515704 Recovering metal values KENNECOTT COPPER CORP 30 May 1975 [3 June 1974] 23575/75 Heading C1A One or more of the metal values Cu, Ni, Co and Mo are recovered from an Mn-containing ore by (a) leaching the ore with an aqueous ammoniacal ammonium carbonate leach solution containing cuprous ions which reduce manganese oxides in the ore to enable one or more metal values to be solubilized in the solution, (b) continuously regenerating the cuprous ions in the solution by a reducing gas (e.g. CO), (c) recovering a portion of the solubilized metal values as a mixed metal carbonate precipitate, and (d) recycling the mixed metal carbonate back to the leach solution to increase the solubilized Cu copper therein.
Patent GB-938463-A (GB)
Title: Improvements in or relating to tower cranes
IPC: B66C9/14
Filed: 1962-06-19
Abstract: 938,463. Counterbalancing tower cranes. S.G.M.E. USINES MOSER S.A. June 19, 1962 [June 19, 1961], No. 23600/62. Class 78 (4). As the jib 5, Fig. 1, of a tower crane is moved longitudinally across the top of a tower 3 in guides 4 counterweights 12 are moved in unison in the opposite direction to maintain the balance. A motor 6, Fig. 2, drives drums 18 which move the weight through cables 19 and also a drum 8 which moves the jib through a cable 9. With drums constructed as shown, the movement of the weights 12 is non-linear and a bigger movement is produced when the jib and weights are retracted close to the tower, this being useful in certain applications. If all three drums are cylindrical the moment of the weights is linear and perfect balance can be effected over the whole range of movement.
Patent GB-171463-A (GB)
Title: Improvements in safety lock electric switches
IPC: H01H27/06
Filed: 1920-08-12
Abstract: 171,463. Smith, F. P., and Wilson, T. F. Aug. 12, 1920. Mechanical switches without spring action; actuating; locking; handles.-Switch arms d pivoted on a terminal e, can be locked either in contact with the earthed terminal e<2>, or the other terminal e<1> of a magneto or other circuit. The switch arms d are toothed at one end d<1> and are rotated and held in either position by the toothed wheel c<2>. To operate the switch, the spindle c, which is non-rotatable, is pushed inwards by the key, freeing its feather c<1> from a notch in the wheel c<2>. If the key be now turned, its bit engages a semicircular projection c<3>, or pins, on the wheel c<2>, which is rotated, operating the arms d. The removal of the key allows the spindle to return to its initial position under the action of its spring a<2>, when the feather c' enters another notch in the wheel to hold it against rotation, locking the arms d. The notches are inclined at about 45‹ to each other, as shown in Fig. 3, corresponding to the two positions of the arms d. The spindle protrudes into a barrel b in which the key turns, and pins b<3>, b' in the cut-away interior of the barrel act as wards for the key. If desired, the wheel c<2> may operate a second wheel to actuate additional switch arms.
Patent GB-1396219-A (GB)
Title: Method and reagent for testing blood
IPC: G01N33/72
Filed: 1973-05-18
Abstract: 1396219 Test for sickle cell disease BAXTER LABORATORIES Inc 18 May 1973 [18 May 1972] 23707/73 Heading G1B A reagent kit for testing blood for sickle cell disease comprises an aqueous phosphate buffer solution of molarity from 2 to 2.5 and pH from 7 to 7.2, and haemolyzing agent and a reducing agent preferably each in powdered form, the buffer solution containing from 0.1 to 1<SP>ml</SP> per litre of a non- ionic surfactant. The haemolyzing agent may be saponin, the reducing agent sodium dithionate and the surfactant octyl or nonyl phenoxy polyethoxyethanol. In carrying out the test, a sample of unclotted blood is mixed with a predetermined proportion of a reagent prepared by mixing the kit components, when a turbidity in the mixture indicates the presence of haemoglobins. A microcapillary sample of the turbid mixture is centrifuged and inspected for results characteristic of sickle cell trait or of sickle cell anaemia.
Patent GB-377467-A (GB)
Title: Improvements in or relating to electromagnetic vibratory devices
IPC: H04R11/08
Filed: 1931-08-24
Abstract: 377,467. Gramophone pick-ups &c. WIRELESS MUSIC, Ltd., 11, Garrick Street, DAVEY, F. G. G., Rosslyn House, Rosslyn Hill, Hampstead, both in London, and CARPENTER, R. E. H., 35, Croham Valley Road, Croydon. Aug. 24, 1931, No. 23815. [Class 40 (iv).] An electromagnetic vibratory device such as a gramo phone pick-up, com prises a hollow arma ture having a poly gonal outer bound ary to its cross-section, two or more of the outer surfaces each co-operating with a magnet pole face. A further characteristic feature is that the armature co-operates with three pole faces so disposed that they lie in the sides of an equilateral or isosceles triangle. A pick-up is shown, in which the field magnet 1 has two outer limbs 3, 4 of the same polarity and a shorter central limb 2 of opposite polarity. A non-magnetic baseplate 5 is provided with means for attachment to a supporting arm, and carries polepieces 7, 8, preferably laminated, which are secured thereto by bolts 19 and nuts 20. The same bolts serve to clamp the magnet 1 to a box-like casing 23. A core 6, which may consist of a bundle of iron wires, or may be solid iron or mild steel, extends between the polepieces, and may pass into or through holes in the latter: The core is surrounded by a coil 9. The adjacent ends of the polepieces and of the limb 2 of the magnet are so shaped that their faces lie in the sides of an equilateral triangle. In the triangular air gap so formed the armature 12 is disposed. It consists of a tube 10 of triangular cross-section, which is soldered to a plate 11, mounted on knife edges 14 on the plate 5. Springs (not shown) press the plate against the knife edge bearings, about which it is vibrated by a stylus secured in a socket 13 in the end of the member 10. The armature is thus adapted to vibrate in a direction parallel to the inner surface of the magnet limb 2. In a modification, Figs. 4 and 5 (not shown), the plate 11 is held against the knife edges by an annular spring plate, between which and the plate 11 rubber pads are interposed. Adjusting screws passing through the spring plate are provided for varying the restoring force and for centring the armature. The armature which may be of any hollow polygonal shape may be formed as a longitudinally split tube. Specification 315,496, [Class 40 (iv), Telephones &c.], is referred to.
Patent GB-962394-A (GB)
Title: A method of controlling a process for the thermal treatment of a solid material on a travelling grate
IPC: C22B1/20
Filed: 1963-06-14
Abstract: 962,394. Controlling travelling grate operations. METALLGESELLSCHAFT A.G. June 14, 1963 [June 29, 1962], No. 23858/63. Addition to 941,933. Heading F4B. In a method of controlling a process for the thermal treatment of a solid material on a travelling grate as described in the parent Specification, the measurement of temperatures at the three closelyspaced consecutive points is dispensed with, and the speed of the grate is varied solely by reference to the measured temperature at the fourth point. It is stated that the length l of the exhaust gas temperature curve between the end M of its substantially linear section and the point where its maximum is attained is substantially constant. Accordingly, the speed of the travelling grate is varied such that the exhaust gas temperature at a point roughly midway along the length of the grate is maintained at a constant level, which constant level ensures that the thermal process will just be completed at the discharge end of the travelling grate.
Patent GB-693378-A (GB)
Title: Improvements in or relating to slicing machines
IPC: B26D7/06
Filed: 1950-10-02
Abstract: 693,378. Slicing-machines. ASCO, Ltd., and GRIFFITHS, A. V. Oct. 15, 1951 [Oct. 2, 1950], No. 23991/50. Class 28 (ii). In a slicing machine the pusher a which slides the food &c. block along the substance carrier e can be pivoted into a position to act as an extension at the end of the bottom of the substance carrier to suit longer food blocks or can be moved entirely behind the carrier and so out of pushing position. The pusher a is rotatable about its spindle b and carries a sector plate or quadrant c<SP>1</SP> having two notches c<SP>2</SP> engageable by a spring-pressed pawl a' to hold the pusher either in pushing position, Fig. 3, or flat out in dotted line position, Fig. 3, where it has been slid up to one end on its guide d to constitute an extension of the carrier e. The pusher a may also be stowed to inactive position i.e. below the level of the the carrier e. The pusher a may also be stowed its quadrant c' is held by a stop c<SP>4</SP> at the end of its back groove c'. The pusher may then be slid down b behind the carrier. A stop c<SP>5</SP> limits its movement in the opposite direction by engagement with the arm a<SP>2</SP> of the pusher.
Patent GB-756058-A (GB)
Title: Improvements in, or relating to, underwater television camera apparatus
Inventor: JEFFREE JOHN HENRY
IPC: G02B23/22
Filed: 1953-08-31
Abstract: 756,058. Optical apparatus. COMBINED OPTICAL INDUSTRIES, Ltd., and MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 30, 1954 [Aug. 31, 1953], No. 24060/53. Class 97 (1). Optical apparatus for use in deflecting the light received from a curved window in a watertight casing into the lens system of a television camera in the casing includes a deflecting element rotatable about an axis joining it to the camera and an axis perpendicular to the first and parallel to the deflecting surface. In Fig. 1 the prism 12 is rotatable about the dotted axis and an axis perpendicular thereto and deflects light into a first lens 13 and a slidable field lens 14, which latter varies the magnification. The image is formed on the receiving surface 19 of the television camera by a secondary lens system 15, 18. The prismatic system 16 rotates by half the amount of prism 12 in order to counteract rotation of the image. Lens 15 may be a compound lens or system and lens 18 may be omitted. The window 11 may be a meniscus lens and a positive lens 20 may be included which moves over the window at twice the angular speed with which the prism 12 rotates about its perpendicular axis. In Fig. 3 the deflecting member is a mirror 42 which rotates about an axis perpendicular to the drawing and also about the main axis 49 together with the optical system. The latter comprises a fixed deflector 48 and lens systems 44, 45 and 46 and deflector 50. The deflector 50 may be omitted and the camera 40 with its lens system 41 aligned along axis 47, but it is then necessary for the camera and lens to rotate about axis 49 with the rest of the system. A positive lens 51 may be provided as in Fig. 1. In Fig. 4, a prism 64 rotatable as in Fig. 1 deflects light directly into the objective 62 of the camera 40. The lens system 65, 66 swings around the prism 64 with twice the angular swing of the prism as described above. Specification 416,398 is referred to.
Patent GB-1336688-A (GB)
Title: Printing device comprising recording pins
IPC: B41J25/00
Filed: 1972-05-23
Abstract: 1336688 Selective mosaic printing PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 23 May 1972 [26 May 1971] 24141/72 Heading B6F A mosaic wire printer comprises a bar-shaped member (23, Figs. 1 and 3) movable to-and-fro in a direction transverse to the movement of the recording sheet, the bar member 23 slidably guiding a plurality of recording pins 33 arranged parallel and at a uniform distance from each other. Each pin is connected to the armature 35 of its own electromagnet 25, all the electromagnets being supported by the bar member 23. The line connecting the centres of the recording pins extends at an angle with respect to the direction of movement of the bar member 23, or parallel thereto.
Patent GB-1100572-A (GB)
Title: Organ portamento system
IPC: G10H1/043
Filed: 1966-05-31
Abstract: 1,100,572. Electrophonic musical instruments. HAMMOND CORPORATION. 31 May. 1966 [15 June, 1965], No. 24178/66. Heading G5J. A portamento effect for an electronic organ is brought into operation when more than one contact associated with one or more playing keys is actuated. The organ consists of a number of transistor oscillators 10 the frequency of which varies with the potential applied to their base. All the oscillators are connected to a common line 46 to which the portamento voltage is applied and are connected selectively to the organ output by playing keys 28. Operation of a single playing key 28 to sound a particular note also closes one of portamento contacts 80 to generate a pulse which is differentiated by condenser 88 and resistor 90 to produce a sharp rise and a slow decay but which cannot pass transistor 72 because of clamp transistor 74. If two or more keys 28 and their associated portamento keys 80 are closed simultaneously, the pulse is able to pass the clamp transistor 72 thus depressing the oscillator frequency abruptly and allowing it to rise slowly in the manner of an Hawaiian guitar. The portamento effect is increased according to the number of keys pressed simultaneously but reaches a limit determined by diode 86. Releasing the keys discharges condenser 88 quickly through clamp 74. A vibrato signal may be also applied through a vibrato normal-vibrato small switch 44 but the portamento overrides the vibrato until the frequency of the oscillator is restored to normal. A single key may be provided with a number of contacts so that the portamento increases with pressure.
Patent GB-207878-A (GB)
Title: Improvements in spring suspension for vehicles
IPC: B62B9/18
Filed: 1922-09-07
Abstract: 207,878. Wiggin, W. C. B. Sept. 7, 1922. Springs, arrangement of; equalizing load on springs; guiding vertical play.-Relates to spring suspensions, particularly for perambulators and light vehicles, but applicable also to heavier vehicles, in which each of the two axles is connected to the vehicle by. rigid links and is spring- pressed in a direction away from the links. The links are short ' compared with the distance through which the spring or springs act, so that there is a comparatively large angular displacement of the links while the spring or springs remain substantially in the same horizontal plane. As shown, the suspension is applied to a perambulator in which the axles A are connected together by springs D, and the links a, a<1> extend in opposite directions and are pivoted to brackets b, b<1> on the frame B, the body being supported on springs C, C<1> carried by the brackets b, b<1>. The links may be rigidly secured to the axles as shown, or the links carrying each axle, may be connected by a transverse torque tube or bar adjacent or surrounding the axle. The tube or bar may have torsional elasticity.
Patent GB-695272-A (GB)
Title: Rail section blocking system
IPC: B61L19/14
Filed: 1947-09-03
Abstract: 695,272. Railway signalling apparatus. SOC. TECHNIQUE POUR L'INDUSTRIE NOUVELLE SOC. ANON. STIN. Sept. 3, 1947. [Sept. 18, 1946] No. 24273/47. Class 105. Railway block signalling apparatus for controlling travel in either direction at will over single line track is arranged so that a lock preventing clearance of the entrance signal at one end of the section cannot be removed unless a testing circuit has checked that apparatus at the far end is set to prevent travel in the opposite direction. The apparatus shown is of the form which includes instruments AFA, ZFA, EFA at one end A and similar instruments AFB, ZFB, EFB at the other end B. The instruments ZFA, ZFB are "consent" instruments one of which shows a white signal while the other shows a red signal ; the end which has the white signal showing is the end which at this time has the authority to despatch a train. The instruments EFA, EFB are instruments which after the arrival of a train at the end of the block section show "blocked". The instruments AFA, AFB are "start" instruments which if showing "clear" denote that no train has yet started from that end. The apparatus is shown in the state in which station B has the authority to send a train. To clear the wayside signal the operator at B first sets the signal lever SHb to the 10 degree position. This energizes a relay 30 from a source B6 to close its front contacts, whereupon a source B4 is applied to the line wire 1 over front contact 33 of the relay 30 at B the current passing by back contact 11 (checking that the relay 10 at the far end A has not been energized by an attempt to clear the wayside signal at A), back contacts Ea, Za (respectively checking that the previous train has reached A and that station A has not got authority to despatch a train), 0 degrees contact of signal lever SHa and lock-detent contact V (checking that signal lever SHa is locked and at the 0 degrees position, back contact Ha (denoting that the wayside entrance signal at A is at danger), line wire 2, front contact 32 of relay 30 to a relay 40 which if all contacts are in the correct position becomes energized and at its front contact 41 allows the lock magnet Spb to be energized to release the signal lever SHb which can thereupon be moved to the 90 degrees position to clear the wayside entrance signal at B. It should be noted that an earth fault Y on the line wires 1 or 2 would cause the relay 40 to be by-passed by the return side of the relay 40 being connected to earth over the front contact 31 of the relay 30.
Patent GB-188140-A (GB)
Title: Improvements in loose leaf binders, or files
IPC: B42F9/00
Filed: 1921-09-13
Abstract: 188,140. Baltzley, L. E. Sept. 13, 1921. Clamping-devices.-A loose-leaf binder or clip has gripping-jaws 10, 11 connected together by arcuate back-portions 12, 13 which slide over one another and are arranged with their concave faces towards the outside of the binder. The jaws are actuated by a finger-slide 16 having pins 17 of diamond-shaped cross-section engaging oppositely inclined intersecting slots 18, 19 in the sliding back-portions, so that the jaws can be held in opened relationship. Guards 15 retain the members in sliding engagement. The clip may be secured to a base or cover, or to a drawing-board.
Patent GB-243492-A (GB)
Title: Improvements in and relating to vapour compression refrigerating machinery
IPC: F25B9/00
Filed: 1924-10-14
Abstract: 243,492. Park, J. Oct. 14, 1924. Refrigerating, compression machines for.-In machines operating on the multiple-effect system, the vapour resulting from the primary evaporation is caused to flow as inducing-fluid through an injector or jet pump and thus inject the lowpressure vapour from the main evaporator into the compressor. The refrigerant compressed in a compressor a passes to a condenser b and then through an expansion valve c to the multipleeffect receiver d. The liquid from the bottom of the latter undergoes further expansion in the main evaporator j, while the higher pressure vapour passes by the pipe f through the central converging nozzle k of an injector l and induces' the flow of vapour from the evaporator j into the annular space n and thence by the divergent nozzle o into the compressor. Alternatively the high-pressure vapour may be admitted to the space n and the low-pressure vapour through the nozzle k. A coil immersed in brine or other liquid to be cooled may be introduced between the valve c and the receiver d, or instead of using a receiver a part of the refrigerant may be evaporated in a chamber around the pipe leading to the main expansion valve.
Patent GB-1399736-A (GB)
Title: Preparation of paper pulp
IPC: D21C3/22
Filed: 1972-05-24
Abstract: 1399736 Pulp manufacture PROCESS EVALUATION & DEVELOPMENT CORP 24 May 1972 [1 June 1971 24 Jan 1972 21 March 1972] 24449/72 Heading D2W Cellulosic pulp having improved brightness is manufactured by digesting lignocellulosic material with an aqueous alkali metal hydroxide solution of pH 8.5-11.5, said solution containing 0.9 to 1.5 weight percent of alkali/ metal carbonate and 4.5 to 7 weight percent of alkali metal bisulphite, the weight percentages being based on the dry weight of the lignocellulosic material and expressed as alkali metal oxide. The alkali metal compounds may be sodium compounds. The lignocellulsoic material may be wood, straw, bamboo, hemp, sisal or bagasse. It may be subjected to prehydrolysis by digestion at pH 4.0-5.8 170‹- 188‹C under autogenous pressure in the presence of from 70-100 weight percent moisture based on the dry wt. of the material. Acetic acid or acidic white water may be used for pH adjustment in the prehydrolysis stage. An alkali metal silicate may be added to the pulp during digestion.