baber/WOPTO huggingface dataset:
Patent GB-284877-A (GB)
Title: Improved apparatus for and method of generating power from tidal and river currents
IPC: F03B17/06
Filed: 1927-03-09
Abstract: 284,877. Harries, T. 0., and Thompson, W. J., March 9, 1927. Working-fluid supply; regulating. - In an apparatus for utilizing tidal energy, a turbine a is carried. by a transportable casing g such that the direction of flow is the same for ebb and flow tides, which can be anchored at varying predetermined distances from the surface. Channels g guide -the water down a central channel to the turbine, screens p being lifted or lowered by the action of the current on an arm s and vanes t to oppose a flow of current straight through the chambers g. The current escapes through holes in diaphragms at the sides of the turbine into chambers b each having interconnected flap doors d such that the escaping current opens the appropriate door and closes the other through linkage u, Fig. 4. The water is guided on to the blades of the turbine by hinged blades f which have slots engaged by studs k on a pair of rings h mounted on either side of the turbine and connected by struts l to a cross bar m for hand operation. A central diaphragm is provided on the turbine to direct the flow equally on each side of it to prevent end-thrust.
Patent GB-353486-A (GB)
IPC: G03C5/18
Filed: 1930-02-27
Abstract: 353,486. Photographic diazotype processes. RENKER, M., RENKER, G., RENKER, H., and RENKER, A., (trading as DœRENER FABRIK PRAPARIERTER PAPIERE RENKER & CO.), Niederau, D³ren, Germany. Feb. 27, 1930, No. 6550. Convention date, March 22, 1929. [Class 98 (ii).] Diazotype prints are prepared by applying to paper a light-sensitive diazo-compound admixed with ureas or their derivatives and/or ammonium salts of organic acids, which prevent subsequent discoloration of the paper, and developing the print by applying to it an excess of a liquid alkaline developer containing an azo coupling component, the excess being immediately removed. The diazocompounds of para-amido-diphenylamine and of its derivatives may be used. Substances such as salts of thiosulphuric acid may in known manner be added to the developer to retard its discoloration. The developer may be applied as by spraying, by passing the paper through the bath by means of a roll system, or by contact with a roller dipping into the developing liquid; and the excess may be removed as by passing the paper between pressure rollers, or by blowing it off with a current of hot air. In examples, (1) paper sensitized with a solution of 3-diazo-carbazol and thiourea is developed in the above-stated manner with a solution of phloroglucin, soda, and sodium thiosulphate ; and (2) paper sensitized with a solution of hydrochloride of para-diazodiphenylamine and ammonium citrate is developed with a solution containing phloroglucin or resorcin. The Specification as open to inspection under Sect. 91 (3) (a) describes also a process employing a diazo paper containing organic acids or their salts (e.g. ammonium salts), reducing substances such as thioglycollic acid, and " anti-oxygene " dyes such as cyanin blue, modulating blue, or water blue and states that these substances may alternatively be applied to the paper after exposure, as by including them in the developing liquid. It also refers to the removal of excess of 'developer by means of a scraper bar. This subject-matter does not appear in the Specification as accepted.
Patent GB-697152-A (GB)
Title: Circularly polarized antenna arrangement for radar
IPC: H01Q25/00
Filed: 1952-03-14
Abstract: 697,152. Wave-guide and coaxial line junctions. STANDARD TELEPHONES & CABLES, Ltd. (FEDERAL TELECOMMUNICATION LABORATORIES, Inc.). March 14, 1962, No. 6641/52. Class 40 (viii). [Also in Group XL (c)] In a pulse radar system employing circular polarization, means involving the use of gas switches are provided for altering the effective length of the feed line to an aerial element during transmission by a half-wavelength from its effective length during reception. Fig. 2 shows one form of switching arrangement. During transmission of exploring pulses, T.R. tubes 11 and 16 are rendered conducting by the application of the high-energy pulses thereto, whereby energy from the transmitter-receiver is directed via path ACEFDB to the aerial element while during reception conduction ceases in the tubes 11 and 16 and energy is directed to the transmitter receiver via path BDGCA. In the arrangement shown in Fig. 3, energy from the transmitter-receiver (or aerial, according as to whether transmission or reception is taking place) passes down side-arms 19 and 21, which differ in length by a quarterwavelength, to be reflected at the ends thereof and is then combined at the input to the line leading to the aerial (or transmitter-receiver) During transmission the T.R. tubes 23 and 24 are conducting and energy is reflected from the ends of the lines 19 and 21 with a change of phase of 180 degrees while during reception the lines are open-circuited and no such change of phase occurs, so that the effective lengths of the feed-line during transmission and reception differ by a half-wavelength. In the magic-T arrangement shown in Fig. 4, a similar process occurs, energy being reflected from tubes 30 and 31 with a phase change of 180 degrees during transmission but with none during reception. The side arms 26 and 27 differ in length by a quarter wavelength.
Patent GB-230834-A (GB)
Title: Improvements in jigging conveyors
IPC: B65G27/00
Filed: 1925-03-11
Abstract: 230,834. Soc. Anon. Centner-Chapuis. March 11, 1924, [Convention date]. Jigging conveyers.-Projections 24, Fig. 2, formed on brackets 12, Fig. 4, at one end of a section take into corresponding notches in closed eyes 19, Fig. 5, provided at the adjacent end of the next section. The head 15 of a bolt 16 passed through an eye 19 fits into a notch 14 cut in the face 13 of a bracket 12. Each bolt is secured by nuts 26 and a pin 27. Only alternate sections 1 are provided at their centres with tracks 2 which rest on the usual roller &c. 3.
Patent GB-662171-A (GB)
Title: Improved fluid-pressure servomotor control system for copying machine tools
IPC: B23Q35/18
Filed: 1949-03-11
Abstract: 662,171. Copy-milling. RIGID, Ltd. March 11, 1949 [March 12 1948 ; Dec. 16, 1948], Nos. 6671/49 and 6672/49. Class 83 (iii). In a hydraulically-operated copy-milling or like machine - tool, the tracer comprises a slide-valve 5 operated by the tracer finger 6 and mounted within a bush 43 which is also connected to the tracer finger so that, on a certain lateral pressure on the finger, the bush is axially displaced in its housing to perform the function of the valve. The tracer finger 6 is mounted between fixed rollers 37 and rollers 36 on a movable hanger plate 51 and is coupled to the valve 5, which it operates by axial movement, through a spring-loaded ball coupling 41 that allows a limited pivoting movement to the finger. The hanger plate is connected by rods 49 having hemi-spherically-seated ends to a plate 47 which bears on the stem 44 of the spring-loaded bush 43. When the finger is moved laterally by a steep slope on the pattern, a ring of balls 53 sealed between the hanger plate and a fixed plate 52 force the hanger plate downwards and thus move the bush down relatively to the valve 5. The tool 10 and the tracer are mounted on a cross-bar 12 movable horizontally by a piston 35 and the work 9 and pattern 7 are carried by a table 8 movable vertically by a piston 25. A low-pressure pump 1 supplies fluid to the valve 5, which directs it to one side or other of a main valve 17 controlling the flow of high-pressure fluid from a pump 19 and throttle valve 21 to the vertical and horizontal feed pistons. When the valve 17 is in the intermediate position, shown in Fig. 1 and corresponding to a flat portion of the pattern, the pressure builds up and opens a non- return valve 29 so that all the pressure-fluid is supplied through a reversing valve 30 and regulating valve 31 to the horizontal feed piston 35. On a sloping part of the pattern, the opening of the valve diverts fluid to the vertical feed piston 25, according to the steepness of the slope, and the horizontal feed is correspondingly reduced or is arrested. The reversing valve 30 has a longitudinal bore 59 which leads the fluid to the two ends of the valve space where coneseated valves 60, 61 are fitted, each operated by a dog at the end of the horizontal working stroke to bleed fluid momentarily from one end of the valve space into a return line 62 and shift the valve into a position where fluid is supplied to one or other side of the regulating valve 31. The valve 31 is disposed between bushes 55 loaded by springs 56 so that the valve openings are restricted to cushion the operation of the piston 35. In a modification, the reversing valve 30 is moved against a spring from one position to the reversing position by linkage to an electromagnet. In a further modification, the high-pressure fluid is supplied directly to the tracer and thence to the piston 25 and the low-pressure pump, and the valve 17 is omitted.
Patent GB-161417-A (GB)
Title: Improvements in box making machines and the like
IPC: B21D51/26
Filed: 1920-03-05
Abstract: 161,417. Poole, H. J., and Beddington, C. March 5, 1920. Hollow-ware.-In a machine for turning over the edges of metal blanks for box lids, these are first passed by hand, feed rollers a, a, or other feed devices, to a pair of rollers b, c, preferably adjustable, to turn the edges of the blank at right angles to the main portion. The upturned edges are then turned inwards by stationary but adjustable formers d with working portions d<1>, and pins f. The edges are preferably flattened down by rollers g.
Patent GB-1394024-A (GB)
Title: Method of recovering vanadium values from a vanadiumcontaining material
IPC: C22B34/22
Filed: 1973-02-13
Abstract: 1394024 Recovery of vanadium values TSENTRALNY NAUCHNO - ISSLEDOVATELSKY INSTITUT CHERNOI METALLURGII IMENI I P BARDINA and NAUCHNO - ISSLEDOVATELSKY INSTITUT METALLURGII 13 Feb 1973 6967/73 Heading C1A Vanadium values are recovered from a vanadium containing material, e.g. ores, concentrates and slags, by roasting in the presence of oxygen with an oxide of an alkaline earth metal, for example in a rotary furnace at above 750 C. and then leaching the roasted material either with (a) a solution of a mineral acid at a temperature not exceeding 70 C. while maintaining the pH of the solution at 2À5-3À2 or (b) an alkaline metal carbonate solution to give a solution of alkali metal vanadate which may be treated with an ammonium compound (e.g. NH 4 OH) and CO 2  to form ammonium vanadate.
Patent GB-566867-A (GB)
Title: Improvements in or relating to explosive devices for use in fire fighting equipment systems, electrical switch devices and other purposes
IPC: H01H33/985
Filed: 1943-05-03
Abstract: 566,867. Valves. GRAVINER MANUFACTURING CO., Ltd., and MATHISEN, A. May 3, 1943, No. 6973. [Class 135] [Also in Groups XXI, XXXIII and XXXVII] The explosive device, Figs. 1 and 2, comprises a tube 2 having a charge of explosive 6 disposed between a stud 3 (which is to be ejected by the explosion) and a closure 5. The stud 3 passes through a restricted bore 12 in the tube 2'and has a frangible retaining rim 4. An electrically-ignited fuze is disposed in a holder 8 screwed into the tube 2. When the fuze is ignited, the flash passes through a conduit 9 in the closure 5, and through side ducts 11 to the explosive 6, and the resultant explosion ejects the stud, the rim 4 being sheared off. The side wall of the explosion chamber consists of. a sleeve 13 soldered, brazed, &c. to the rim 4 and screwed on to the closure 5. In a modification, the sleeve 13 and ducts 11 are omitted and the rim 4 is integrally united with the tube 2. Applications of the invention : (1) (Fig. 3). To the stud is screwed a shut-off plug 15. When the stud is ejected it carries the plug with it, the latter obstructing the passage of fluid through the pipe 14. The plug is held in the obstructing position by a spring 18. (2) (Fig. 4). The stud 33 is elongated and passes through holes 25 in a pipe 24. When the stud is ejected it enters a recess 27 and a spring 26 urges the pipe 24 to the right to operate fuel cocks, airscrew feathering mechanism, &c. (3) (Fig. 6). When the stud 3 is ejected it tilts clockwise a bell-crank lever 28, 30 pivoted at 29, thus bringing together spring contact points 32 which control fire-extinguishing appliances. The fuze 36 has a delay action : on occurrence of a fire, the fuze is ignited by a control switch and burns for 10 seconds before it in turn ignites the explosive 6. An externally-operated cam 48, mounted on a spindle 49 and normally spring-urged to the position shown, is used to check circuit continuity over the contacts 32.
Patent GB-837324-A (GB)
Title: Mechanism for feeding sheet material to a rotating cylinder
IPC: B65H9/02
Filed: 1957-03-04
Abstract: 837,324. Feeding sheets. HARRIS-INTERTYPE CORPORATION, [formerly HARRIS-SEYBOLD CO.]. March 4, 1957 [March 6, 1956], No. 7062/57. Class 100(1) Sheets S are fed in two stages, without a break in feed, from a position of rest on a feed-board 10 to abut gauge pins 30 on a rotating cylinder 11 by two sets of segmental rollers 13, 23 co-operating with two sets of dropping-rollers 14, 24, iespectively, the rollers 23 being in line with the pins 30. This arrangement ensures more accurate registration of sheets which may have uneven front edges. The sheets S, which may be of cardboard, are fed over the feed-board 10 by endless tapes 21 up to preliminary front stops 17 which oscillate about pivots 18, and are then side-registered by rollers 19, 20 against a side gauge.. In this position, the sheets are at rest between the lower rollers 14, 24 and upper rollers 13, 23. The rollers 13, 23 are in the form of segments and are secured to a shaft 12 driven in a non- uniform manner such that in one revolution it has acceleration and deceleration periods and different stationary periods, and the shaft rotates once for each sheet fed. The shaft 12 is adjustable relatively to its driving means so that it can assume either of two angular positions. It may be driven from the cylinder 11 through gears 25, 26, and one end of the shaft is fixed to a circular plate 27 having screw and slot connections 28, 29 with the gear 26. The cylinder 11 is driven in a non- uniform manner by means such as described in Specification 743,453. Assuming cardboard sheets S are being fed, the rollers 13 are set on the shaft with their segments at the same angle, and there are two rollers 23 with their segments both at the same angle but displaced relatively to those of rollers 13. There are only two gauge pins 30 (shown in full lines) on the cylinder 11, and these are in alignment with the rollers 23. In operation, starting from the positions of rest shown in Fig. 2, the stops 17 are lowered, the rollers 14 are raised to nip the sheet S against the stationary rollers 13, and the latter are driven and accelerated . to feed the sheet to a position short of the gauge pins 30. In this position, the segments of the rollers 13 have passed beyond the rollers 14 and are ineffective, but the segments of the rollers 23, co-operating with the rollers 24, are still effective and push the. sheet forward until it engages the gauge pins 30. Sheet grippers 31 on the cylinder seize the sheet, and the rollers 24 drop. When the apparatus is to be used for paper sheets having accurate front edges, the shaft 12 is adjusted angularly relatively to the gear 26 so that the segments of the rollers 13, 23 become effective earlier in the cycle, and additional gauge pins 30 (shown in dotted lines) are brought into position. In this case both sets of rollers 13, 23 grip and feed a sheet against all the gauge pins.
Patent GB-213415-A (GB)
Title: An improved device for cleaning boots and shoes
IPC: A47L23/02
Filed: 1923-12-11
Abstract: 213,415. Hughes, H. E. Dec. 11, 1923. Boots and shoes, cleaning. - Hand-operated means for cleaning boots &c. while on the feet comprises a brush 8 rotatably mounted between supports 2, 3 fixed to a platform 1 and provided with a hand-rail 4, the brush being driven through chain-and-sprocket gear from a handle 12. The platform is of metal and consists of side members spaced by rods and attached to the supports 2, 3 at points above their lower ends. A scraper 6 may be provided and a guard 13 covers the driving-gear. Screwed pivot pins 18, 19 pass through the supports and carry the shaft 7 to which the brush 8 and sprocket-wheel 11 are fixed, the pin 19 being provided with a handle 23 so that it may easilv be retracted to remove the brush after withdrawing the lock nut 21.
Patent GB-542029-A (GB)
Title: Improvements in step-by-step switches
IPC: H03J1/22
Filed: 1940-04-19
Abstract: 542,029. Electric selectors. PHILCO RADIO & TELEVISION CORPORATION. April 19, 1940, No. 7106. Convention date, June 3, 1939. Drawings to Specification. [Class 40 (iv)] In a switching mechanism comprising primary and secondary step-by-step switches in which the second switch is driven by an abutment on the first switch as in Specification 531,189, excessive movement of the second switch is prevented on each step by a pawl and ratchet wheel. The holding ratchet.wheel of the second switch in the above mentioned Specification is provided with a second set of oppositely directed teeth into engagement with which a stopping pawl is moved at each step by a projection on the stepping pawl of the first switch. Specification 531,188 also is referred to.
Patent GB-541621-A (GB)
Title: Improvements in or relating to brakes
IPC: B60T8/52
Filed: 1940-04-19
Abstract: 541,621. Fluid-pressure brakes. BUDD WHEEL CO. April 19, 1940, No. 7133. Convention date, May 31, 1939. [Class 103 (i)] A vehicle braking system having a torque arm movable in accordance with the torque exerted by the brake, as described for example in Specification 517,624, is adapted to control the braking force through a device which does not respond to rapid motion of the torque arm in the direction corresponding to increasing torque or by slow motion of the arm in either direction but which responds to rapid motion of the arm in the direction corresponding to decreasing torque. The contacts 29 .. 32 for operating the valves 15, 18 to release the brakes of the system shown in Fig. 1 are closed, when the torque arm 34 moves rapidly downward owing to a sudden decrease in the torque, by means of a tension member 67 pulling disc 23 towards the contacts, the force being-transmitted through a bellows member 21 which resists elongation by the tension suddenly applied but which yields to slow movements of the arm 34 by reason of entry or exit of air through a small vent 27 and to sudden movements of the arm upwards (corresponding to increasing torque), tending to compress the bellows by a spring 68 air escaping freely through valve 28. A piston and cylinder construction may replace the bellows. Specification 536,487 also is referred to.
Patent GB-215324-A (GB)
Title: Improvements relating to conveying apparatus
IPC: B65G17/26
Filed: 1924-03-20
Abstract: 215,324. Rigaud, G. J., and Rigaud, J. P. May 4, 1923, [Convention date]. Auxiliary chains; delivering and feeding devices for endless chain conveyers.-Each load carrier C is attached to a rod A which is pivotallv mounted in a pair of parallel endless chains E and connected by a rod B to a link of a similar chain D. When the load carriers are prongs, the loads may be transferred from one conveyer to another arranged at an angle thereto by arranging for the load carriers of one conveyer to pass through the carriers of the other at one point of their paths.
Patent GB-1415935-A (GB)
Title: Can closures
IPC: B65D17/00
Filed: 1973-02-14
Abstract: 1415935 Easy-open can ends G B KLEIN 14 Feb 1973 [14 Feb 1972] 7148/73 Heading B8D An easy-open can end L is provided with an integral score-line-defined convex button or tab T, which is adapted to be flexed inwardly to a concave position to initiate rupture of the scoreline 33, along at least a portion of its length. The tab has a non-scored end 34 so that it remains attached to the can end after rupture of the scoreline and inward depression. The scoreline is preferably formed in the bottom surface of a double-folded rim or bead 30 so that the sharp edge left on rupture of the scoreline is shielded by the rounded bead fold 31 which defines the pouring aperture rim. An upwardlyprojecting crease 41 is formed at the front of the tab and extends below the fold 31 to form a local stress-concentrating disruption at which rupture is initiated on inward flexing. Corrugations (40), Fig. 4 (not shown) facilitate flexure of the tab. In modifications, Figs. 10-17 and Fig. 18 (not shown), the crease 41 is replaced by two downwardly-projecting creases 43 and 44 to form a local, W-shaped stress-concentrating and rupture-initiating disruption. In the embodiments of Figs. 19-22, Fig. 23, Fig. 24 and Fig. 25, the tab is of generally circular configuration, and the stress-concentrating and rupture-initiating disruptions are provided by radial or chordal creases 41<SP>11</SP>, 55, 58 or 59.
Patent GB-309484-A (GB)
Title: Improvements in electric phonographs
IPC: G11B3/00
Filed: 1929-03-05
Abstract: 309,484. Igranic Electric Co., Ltd., (Assignees of Goudy, C. F.). April 11, 1928, [Convention date]. Electric pick-ups and the like, supporting.- The supporting arm 14 of an electric pick-up or the like 5 is mounted on horizontal trunnions 21 at the upper end of a sleeve 24 which swivels in a heavy self-anchoring pedestal 25 resting on the base board. The arm carries the electric unit at its forward end and a counterweight 26 at its rear end, a flexible conductor 11 extending through the arm and down the sleeve 24. The swing of the arm in the pedestal is controlled by adjusting a dished spring 28. To ensure the unit being upright, it is adjustably mounted in the end of the arm 14 by a screw 17 engaging an arcuate slot. When used for recording, additional pressure on the needle is provided by a sliding weight 38. Reference has been directed by the Comptroller to Specification 307,971.
Patent GB-420036-A (GB)
Title: Method of and apparatus for the manufacture of seamless pipes
IPC: B21B17/04
Filed: 1934-03-06
Abstract: 420,036. Rolling tubes. BARON, H., 231, Strand, London.-(Alfina Immobilien- Finanzierungs-und Verwaltungs Akt. - Ges. ; Glarus, Switzerland). March 6, 1934, No. 7177. [Class 83 (iv)] A pipe blank 1 is reduced on a pushing mandrel 2 by forcing it through a series of undriven reducing rolls 5a, 5<b>, 5<c>, 5d, the feed being assisted by large driven rollers 7<a>, 7b. The diameter of the reducing rolls is less than twice the diameter of the pass, and the diameter of the feed rollers should be from 1¢ to 4 times the diameter of the pass. The reducing pass may consist of three or more rollers, and the feedings pass may consist of two rollers only. The smaller rollers 7<b> may be undriven and thus become partially reducing rolls. The arc of contact of the reducing rolls may be small or flattened to reduce friction.