baber/WOPTO huggingface dataset:
Patent GB-756777-A (GB)
Title: Justifying typewriter
IPC: B41J19/64
Filed: 1954-04-27
Abstract: 756,777. Typewriters. LEGLISE, P. April 27, 1954, No. 12116/54. Class 100 (4). In justifying typewriters of the kind in which justification is effected either over a terminal segment or over the complete line as desired and in which a justifying lever L co-operating with a stop B adjustable in position on the typewriter frame effects a sliding relation between e.g. the , escapement rack and the platen, a device is provided for setting the initial length of the justifying lever according to the length of the normal terminal segment used, one justification setting scale being provided for each of a number of groups of normal terminal segments, each of the scales being accurate for justifications over the length of a basic segment of the group and approximate for justifications over the lengths of the other segments of said group. The setting scales may be in various forms. As shown in Fig. 10, it comprises a square plate P3, removably fixed in position on the platen carriage or other part which slides relative to the pivot of the justifying lever. Each edge of the plate P3 comprises a different arrangement of setting notches, one edge being fixed for engagement with the justifying lever L while the other three edges are obscured by a fixing plate V1. For easy removal, or the adjustment of the plate P3, a spring y<SP>1</SP> is depressed at its righthand end to raise the plate P3. In Fig. 14 the groups of terminal segments are designated I, II, III and IV. The stop B is plugged into one of the recesses E in the group required and the appropriate edge of the setting plate P3 is positioned for coaction with an adjustable slider on the lever L. The recesses are formed in a plate V in straight or staggered rows, the plate being mounted on a slider m adjustably positioned on the typewriter frame so that the justification is commenced at the beginning of the terminal segment. In a modification (Fig. 18, not shown), the recesses are accurately formed on the plate V and the stop is attached to a lever pivotally mounted on the slide m. The lever and stop are spring urged into the recesses. The setting scales may take other forms, e.g. that shown in Fig. 8, wherein the notches are part of a helical groove on a cylinder W which is held in a position corresponding to the length of the normal terminal segment by a spring i engaging in notches i 1 . In a further modification, the setting scales may comprise a pair of rectangular plates having a scale on each long edge, and one plate mounted on top of the other in a spring carrier. Specifications 715,115, 717,947, 723,941, 723,942 and 730,678 are referred to.
Patent GB-582032-A (GB)
Title: An improved hand-operated stop valve
IPC: F16K7/06
Filed: 1944-06-27
Abstract: 582,032. Pinch cocks. RULE, T. B. June 27, 1944, No. 12157. [Class 135] In a hand-operated valve for controlling viscous and corrosive fluids of the type in which a rubber or rubber substitute tube flanged at its ends and enclosed in a metal body or casing is compressed by a slidable screw-driven plunger to stop the fluid flow, the tube is secured to the plunger on the one hand and to a point of the casing opposite the plunger on the other hand so that movements of the plunger are positively conveyed to the tube. As shown, a rubber tube a is flanged at b and embraced by the parts of a longitudinally split casing c bolted together at e. The central part of the tube carries or is integral with projections n<1>, p<1>, the former being secured to the plunger m by a screw n and the latter being secured to the casing c by a bolt p. The plunger m slides in an extension f of the casing c and has a slot to receive a nut l which travels on a screwed spindle h operated by a hand wheel j. In a modification suitable for high pressures, the plunger m carries lateral abutments to support the upper side of the tube against the fluid pressure in the closed position. According to the Provisional Specification, the flexible tube may have a centrally disposed rubber or fabric sleeve. Also the valve body may be designed for attachment to a continuous length of flexible tube.
Patent GB-455856-A (GB)
Title: Method of and apparatus for separating heterogeneous mixtures
IPC: B03B13/00
Filed: 1935-04-23
Abstract: 455,856. Automatic control systems. WUENSCH, C. E., 30, South Kingman Road, South Orange, New Jersey, U.S.A. April 23, 1935, No. 12170. [Class 38 (iv)] [See also Groups II and I] Concentration.-A suspension of solids in liquid for use as a medium for separating materials of different specific gravities is taken from a sump to a conditioning tank 5 in which the coarse particles are removed. The conditioned medium overflows a lip 10 and passes to the separating vessel 17. To maintain the density of the overflowing medium constant a density regulator is provided comprising a hydrometer 11 provided with a shield 12 which is interposed between a light 13 and a photo-electric cell 14 which is connected to a source of current 15 and a solenoid operated valve 16 controlling the water supply to the sump from which the medium is pumped to the conditioner. An increase in density in the medium overflowing the lip 10 causes the valve 16 to open. The hydrometer may be provided with a second shield which operates in a second photo-electric circuit to control the amount of solids admitted to the sump. To prevent crowding at the bottom of the separator 17 a portion of the mixture in the lower portion of the vessel is withdrawn through a screen 22 to a hutch 24 having a drain pipe 25. The mixture passes through the pipe to a box 30 in which is a hydrometer 31 with a shield 33. The movements of the shield between a light 32 and a photo-electric cell 34 vary the opening of a solenoid operated valve 29 on the drain pipe 25, the rate at which the mixture is withdrawn from the hutch being thus controlled by the density of the mixture withdrawn. The density of the liquid in the lower part of the vessel 17 is thus maintained substantially constant. Specifications 455,888 and 455,889, [both in Group II], are referred to.
Patent GB-663511-A (GB)
Title: Improvements in the cutting teeth of precision tools and new industrial devices resulting from their application
IPC: B23C5/12
Filed: 1945-05-16
Abstract: 663,511. Milling-cutters; reamers; planing- tools &c. DELOCHE, TALLAVIGNES, & CIE., and ANTOINE, L. May 16, 1945 [Oct. 17, 1941], No. 12285/45. Class 83 (iii). In toothed cutters such as milling-cutters, reamers, rack-type planing-cutters, &c. each tooth is given a top surface a<SP>1</SP>, e, Fig. 2, having a clearance angle substantially in excess of 2 degrees, e.g. between 4 and 5 degrees, and is ground near the cutting edge a, g on a flat surface a, d, having a clearance angle α of about 2 degrees, the clearance angle of the flanks of the tooth being not less than 6 degrees. The tips of the teeth originally project to points a<SP>1</SP> so that after grinding the flats, the cutter will have the required diameter on the circle x<SP>1</SP>, x<SP>1</SP>. Grooves or ridges b<SP>1</SP>, Fig. 5, of V, half-round or rectangular section may be provided on the top surfaces of the teeth to form a reference mark for grinding the flats. The front rake of the teeth may be increased by grinding the front face at an angle #, Fig. 4, and if the teeth are of constant profile, such as for gear-cutting, the depth m of such grinding should be less than the depth of the clearance which the tooth produces at the root of the tooth space formed in the work so as not to disturb the tooth profile.
Patent GB-997001-A (GB)
Title: Terrazzo repair process
IPC: C08L63/00
Filed: 1962-03-30
Abstract: A composition for repairing concrete or terrazzo surfacings comprises at least one liquid epoxy resin and at least one mercaptan-terminated liquid polysulphide polymer in the weight ratio range 1 : 1 to 2.5 : 1, and 8 to 15% (of the total weight of epoxy resin and polysulphide polymer) of a cure accelerator. Alternatively, the composition may comprise at least one liquid epoxy resin and at least one diamino fatty acid amide in the weight ratio range 2 : 1 to 1 : 1.5.  The composition may contain up to 5% by weight of at least one filler and up to 15% by weight of at least one solvent.  In several examples, the following constituents are specified; a fast cure agent, tri-(dimethyl-aminomethyl) phenol and a slow cure agent, dimethyl-aminomethyl phenol associated with the liquid mercaptan-terminated polysulphide polymer to form part A of the composition, and a liquid epoxy resin having an epoxide equivalency of 185-195 dissolved in toluene to form part B; a liquid diamino fatty acid amide to form part A and a liquid epoxy resin (epoxide equivalency 179-194) modified with butyl glycidyl ether mixed with Tysox resin A to form part B.
Patent GB-688642-A (GB)
Title: Improvements relating to apparatus for feeding liquids at controlled rates
IPC: G05D21/02
Filed: 1950-05-17
Abstract: 688,642. Mixing fluids. PERMUTIT CO., Ltd. May 17, 1950 [May 17, 1949], No. 12358/50. Class 86 [Also in Groups XXVIII and XXXV] In a water conditioning system a liquid chemical is pumped into a tank 10 (Fig. 3) by a pump 14 via a pipe 12 in dependence on the rate of flow of the water in a pipe 11 leading to the tank and upon the pH value of the mixture emerging from the pipe 13. A flow meter 21 is connected across an obstruction 22 in the water inflow pipe 11 and is adapted to produce pressure on a diaphragm 47 mounted in the upper half of a casing. 45. A pH meter 42 is connected in the pipe 13 to operate a pneumatic relay 43 adapted to produce a pressure on a diaphragm 48 in the'lower half of the casing 45. The diaphragms are connected to a spring loaded rod 49 having gearing to operate the movable contact of a potentiometer 40 connected across the input terminals 18, 20 of a grid controlled rectifier system 16, the movable contact being connected to input terminal 19. The rectifier output is thus under the control of both the water flow and the pH value of the emerging mixture and controls a motor 15 operating the pump 14. In a modification (Fig. 2) the flow meter 21 operates a movable contact 27 on a potentiometer 25, and the pH meter operates the movable contact 30 of a double potentiometer 31, 32, the arrangement being connected to terminals 18, 19, 20 so that a constant resistance is maintained across the terminals 18, 20. This apparatus replaces the pneumatic arrangement and potentiometer 40 in Fig. 3. In a further embodiment, Fig. 4, the' rates of flow into two tanks A. B are individually measured by flow meters 65, 66 which effect change in the setting of variable resistors A<SP>1</SP>, A<SP>11</SP> and B<SP>1</SP>, B" respectively. The pump 68 is therefore controlled in dependence on both rates of flow. Manually or automatically operated relays 78 ,79 are provided for disabling one of the sets of resistors A<SP>1</SP>, A<SP>11</SP> or B<SP>1</SP>, B" if it is desired to operate the pump 68 in dependence on one of the flows in tank A or B only.
Patent GB-1003204-A (GB)
Title: Apparatus for converting thermal energy to electric power
IPC: H01L37/00
Filed: 1963-03-28
Abstract: 1,003,204. Thermo - electric convertors. UNITED STATES ATOMIC ENERGY COMMISSION. March 28, 1963 [June 22, 1962], No. 12399/63. Heading H1K. Apparatus for converting thermal energy into electrical energy comprises at least one electron emissive surface separated from a second surface by a gap having a width of the same order of magnitude as the electron wavelength across the gap, whereby by heating the electron emissive surface a flow of electrons is produced therefrom which pass across said gap by means of the quantum mechanical tunnel effect. In one embodiment, Fig. 2, the two surfaces are produced by two aluminium electrodes 1 and 2, 1 being the heated emitter electrode and 2 being the collector electrode. When separated by a vacuum or by a gas at a pressure of less than 10<SP>-5</SP> mm. Hg, the gap width should be less than 40 A. When the two surfaces are separated by a heat-insulating oxide film, possibly produced by anodizing techniques, the gap may be increased to 120 A in thickness. In a second embodiment, Fig. 4, a temperature difference of 500‹ K is maintained across a stack assembly comprising 5x10<SP>6</SP> layers of aluminium oxide, 10 Š thick and a corresponding number of aluminium electrodes 40 A thick. A temperature profile as shown is developed in the assembly. Apparatus according to the invention is stated to be more efficient over the temperature range 700‹ K to 1300‹ K than thermo-electric (e.g. lead tellurium types), and thermionic (e.g. impregnated tungsten types).
Patent GB-952063-A (GB)
Title: Improvements in the hardening of gelatin
IPC: G03C1/30
Filed: 1960-04-08
Abstract: A photographic gelatin composition contains gelatin of photographic grade and an organic isocyanate containing at least two isocyanate groups separated by at least two carbon atoms. The organic isocyanate may be a diisocyanate such as tolyl diisocyanate, octomethylene diisocyanate or hexamethylene diisocyanate, or a bisulphite addition product thereof. The composition may be a photographic gelatins-silver halide emulsion or a 1/2 to 1% solution of gelatin. The composition may form a layer on a support e.g. a photographic film base, paper, cloth or other support, or may be formed by treating a photographic gelatin layer e.g. a sensitive photographic gelatins-silver halide emulsion, with an aqueous solution of the organic isocyanate. The isocyanate may be incorporated in a developing solution employed for processing the emulsion layer after exposure. The isocyanate may be present in the aqueous solution in a concentration of between 0.5 and 5%. The photographic gelatin layer, after treatment with the isocyanate, may be treated with an alkaline bath containing an alkali metal sulphate in solution therein. The composition may contain known chemical and optical sensitizing agents, fog inhibitors, stabilizers, speed-increasing compounds, plasticizers, and dispersing agents e.g. gelatin, colloidal albumin, a cellulose derivative, or a synthetic resin such as polyvinyl alcohol or a hydrolized polyvinyl acetate. Specifications 706,921, 746,686 and 904,364 are referred to.
Patent GB-140267-A (GB)
Title: Improvements in operating devices for bowden wire mechanism
IPC: B62L3/02
Filed: 1919-05-20
Abstract: 140,267. Lamplugh, H. A. May 20, 1919. Control mechanism.-In Bowden-wire mechanism for use with cycles, a spring 13 inside the handle-bar 20 bears against a collar 14 on the inner wire 8 and against a sleeve 10 bearing on the bracket 9 carrying the operating-lever 1 and prevents rattling of the lever due to stretch of the wire 8. The outer member 18 of the mechanism butts against a sleeve 17 fitting within a sleeve 16 surrounding the spring 13 and bearing against the sleeve 10. A collar 7 on the wire 8 bears on a loose sleeve 6 in the lever end. the sleeves 6, 10 being slotted to facilitate assembly.
Patent GB-285695-A (GB)
Title: Improvements in or relating to steam plants provided with excess steam heat accumulators
IPC: F01K1/08
Filed: 1927-05-11
Abstract: 285,695. Aktiebolaget Vaporackumulator, and Ruths, J. K. May 11, 1927. Addition to 129,272. Steam regenerative accumulators.- The flow-over valve 01a controlling the flow of excess steam from the steam main L1 to an accumulator A instead of being operated in accordance with the pressure in the steam main as described in the parent Specification is operated in accordance with the pressure in the boiler. The valve is actuated by a pressure operated device, such as that described in the parent Specification, directly connected to the boiler. Specification 269,523 is referred to.
Patent GB-1510284-A (GB)
Title: Cuttinghead suction-dredger for scooping out earth
IPC: E02F3/92
Filed: 1976-03-30
Abstract: 1510284 Dredgers BALLAST-NEDAM GROEP NV AMSTERDAMSE BALLAST BAGGER EN GROND (AMSTERDAM BALLAST DREDGING) BV and SCHEEPSWERF EN MACHINEFABRIEK DE LIESBOSCH BV 30 March 1976 [15 April 1975] 12761/76 Heading E1F The ladder 10 of a rotary head suction dredger is mounted on the dredger's hull 3 so as to be tiltable about a horizontal axis and slidable relative to the dredger in the direction of the ladder's axial extent. As described a yoke 5 is rotatably journalled at 4 to the hull and has two arms 5 which carry a U-shaped support member 76 pivotable about a horizontal axis 36. A second U shaped member 79 is pivoted at 16 to the member 76 and its arms 8 are pivotably connected to the ladder 10. Pneumatic springs 6, 7 and 18 are arranged between the hull 3 and yoke 5, the ladder 10 and member 76 and between the two members 76 79 respectively. The ladder 10 has rails 11 which move in rollers (28) and 12 mounted on a carriage 83. The carriage 83 has wheels 13 engaging the surface of a part 17 of the member 79. The wheels 13 move around the part 17 when the ladder tilts.
Patent GB-918131-A (GB)
Title: Improvements in or relating to rake wheels
IPC: A01D80/00
Filed: 1959-04-15
Abstract: 918,131. Haymaking machines. VAN DER LELY N.V., C. April 15, 1959 [April 26, 1958], No. 12802/59. Class 6(3). In a rake-wheel having circumferential resilient tines, each tine has a straight prong 1 of which the tip is free while the root is carried by a connecting member 2 attached to the remainder of the wheel, the connecting member consisting of two portions 4, 5 the first of which is substantially straight and is at one end connected to the tine so as to be out of alignment therewith, the other end being attached to one end of the second portion, the other end of the second portion being connected to the remainder of the wheel, the connection 7 between the tine and first portion being unsupported and being further from the wheel than the connection 8 between the first and second portions, the connection 9 between the second portion and the remainder of the wheel being also further from the wheelaxis than the connection 8. In Fig. 1 each tine is formed as a straight spoke 6 between the point 9 and the hub 3 and loosely carries a coupling element 11 through which passes the bend 8 in an adjacent tine. In a modification, Figs. 3 and 4, the coupling members are omitted, the corresponding bends 32 being interlinked by a continuous wavy member 44. In both constructions, the spoke-portions 30 have bent-over ends 41 which are received in holes 39, 40 in flanges 35, 36 on the hub and are clamped thereto by a ring 42. In Fig. 5 the wheel has two rims 53, 54, the inner rim 53 having eyelets 59 through which pass the second bends of the tines, the connections 62 to the wheel being made within the outer rim. In Fig. 7, the second portion of the connecting member 69 is formed coiled at 71 before being bolted at 74 to the wheel-rim 68. Specification 918,132 is referred to.
Patent GB-437378-A (GB)
Title: Improvements in sluices for conveying ash and other solid material
IPC: B65G53/30
Filed: 1934-04-27
Abstract: 437,378. Transmitting pulverulent material. ASH CO. (LONDON), Ltd., and SILK, P. B., 63, Lincoln's Inn Fields, London. April 27, 1934, No. 12810. [Class 102 (ii)] [See also Group XXX] In apparatus of the kind in which solid material is conveyed down an inclined gravity trough by a stream of liquid, high - pressure liquid jets additional to the conveying liquid are employed to remove accumulated solid which might block the trough. The Figure shows a nozzle 8 which is adapted to be swung from the dotted to the full-line position by the reactive force of the issuing jet of liquid to deliver the latter in proximity to the base of the trough 1 and in the direction of flow of the material. A counterweight 11 restores the nozzle when the jet is turned off. A crossbar 13 forms an abutment for the nozzle when the latter is in use, and for the counterweight when the nozzle is not in use. A curved baffle 14 prevents impact of the jet with the cover-plates 2. Preferably the bottom bend of the nozzle is brought to a knife edge to facilitate cutting through the obstructing material. In operation, a series of such nozzles are placed at intervals in the trough and are operated in succession, so that the trough is forced progressively. In modified constructions the nozzle is swung into and out of the acting position by a hand lever and by worm gearing. The nozzles may swing in a horizontal or inclined path instead of in a vertical plane.
Patent GB-1379625-A (GB)
Title: Process for producing anhydrous sodium dithionite
IPC: C01B17/66
Filed: 1972-03-20
Abstract: 1379625 Anhydrous sodium dithionite SUMITOMO CHEMICAL CO Ltd 20 March 1972 12848/72 Heading C1A Anhydrous Na 2 S 2 O 4  is prepared by (a) reacting together HCOONa, SO 2  and an alkaline Na compound in an aqueous alcoholic soln., (b) filtering the reaction mixture to remove the dithionite, (c) washing the dithionite with an alcohol, (d) treating the remaining molten liquor freed from dithionite with H 2 SO 4 , (e) distilling the resulting mixture to obtain an alcohol, SO 2  and a formic ester as distillate and then (f) recycling the SO 2  and the formic ester (optionally after conversion into HCOONa), to the reaction step (a) and recycling the alcohol to step (a) or the washing step (c). The alcohol may be CH 3 OH and/or C 2 H 5 OH. The alkaline compound may be NaOH, Na 2 CO 3 , or NaHCO 3 . The amount of H 2 SO 4  added in step (d) may be 0À9-2À0 times the amount required to convert the NaHSO 3 , Na 2 S 2 O 3  and HCOONa present in the reaction mixture into Na 2 SO 4 . The pH of the mother liquor during H 2 SO 4  treatment is preferably 1À0-4À0. The concn. of the H 2 SO 4  is preferably 75-90% by wt. The mixture obtained after the H 2 SO 4  treatment may be filtered to remove the Na 2 SO 4 .
Patent GB-295441-A (GB)
Title: Improvements in mining machinery
IPC: E21C31/00
Filed: 1927-05-13
Abstract: 295,441. Marks, E. C. R., (Goodman Manufacturing Co.). May 13, 1927. Variable-speed epicyclic gearing. - A motordriven mining-machine has feed-driving mechanism driven from the motor and including variablespeed planetary gearing comprising a sun-wheel 145 driven by the gear 47 and engaging planet wheels 142 meshing with a brake-controlled internal gear 144, while planet wheels 141, integral with the planet wheels 142, engage an internal gear 140; clutch teeth, 51, 52, rigidly connected to the sun wheel 145 and internal gear 140 respectively, are selectively connected through a clutch sleeve 60 to the gear 63 so as to give a high or low speed drive respectively to the latter.
Patent GB-500426-A (GB)
Title: Improvements in or relating to traffic control systems
IPC: A43D100/02
Filed: 1937-05-06
Abstract: 500,426. Retractive switches. QUILLIAM, L. May 6, 1937, No. 12920. Convention date, May 7, 1936. [Class 38 (v)] [Also in Group XXXVIII] A road pad or detector comprises a strip 58 carrying a number of contacts 57 engaged by a strip 56 when a vehicle passes. The strips are supported by resilient insulation enclosed by a rubber tube 53 surmounted by a tough rubber cover 52, the side bars 50a being spaced to take the weight of a vehicle if the cover 52 is sufficiently depressed.