baber/WOPTO huggingface dataset:
Patent GB-699585-A (GB)
Title: Improvements relating to electronic gate circuits
Inventor: POLLARD BRIAN WATSON
IPC: H03K19/06
Filed: 1951-06-05
Abstract: 699,585. Pulse circuits. FERRANTI, Ltd. Aug. 28, 1952 [June 5, 1951], No. 13248/51. Class 40 (vi). A gate circuit comprises a valve having at least three grids to the first and third of which input pulse channels are connected respectively via a high value resistor the second grid being connected via a high value resistor to H.T. positive so that an output pulse is produced across a resistor of low value connected in the cathode circuit in response to an input pulse applied from either input pulse channel. The Figure shows an OR gate in which a pentode valve having a short third grid base is connected as a cathode follower. The valve is normally conductive, but when a negative pulse is applied at terminal 4 to the control grid via a high value resistor 5 the stage functions as a cathode follower to produce a negative output pulse at terminal 14. If a negative pulse is applied at terminal 6 to the suppressor grid via high-value resistor 7 the cathode current is diverted partly to the screen grid, but as the value of resistor 12 is such that the screen potential would fall below the controlgrid potential if all were diverted, some flows to the control grid thus causing its potential to fall and a negative output pulse to be produced at output terminal 14. The circuit may function as an AND gate or coincidence circuit by applying positive-going pulse trains to terminals 4 and 6. If one input only is applied the cathode potential cannot rise because of the control exerted by that grid to which an input is not applied, the value of resistor 12 being sufficiently high to reduce to a negligible value the cathode current that results from a positive pulse applied to the control grid alone.
Patent GB-163208-A (GB)
Title: Improvements in variable speed gears for use on motor cycles and the like
IPC: B62M25/00
Filed: 1920-05-13
Abstract: 163,208. Wooler, J. May 13, 1920. Expanding-pulley gearing for motor-cycles comprising a pulley upon a movable bracket 3 is operated by foot gear 22 through a toothed gear 21, Fig. 1, and two racks 19, 20. The rack 19 is connected to the bracket 3 to operate it directly. The rack 20 operates the pulley to keep the belt in tension. The racks are held in engagement with the pinion by roller pins 24, 25 which may be removed to adjust the racks. The drive passes from engine shaft 4, Fig. 2, through gears 5, 6 to a sleeve 7 to which the fixed pulley flange x is secured. The other flange z slides axially on the sleeve 7, being moved by a screw 9 operated through a pinion 11 by an extension 12 of the rack 20. For disconnecting the drive, an added displacement may be given to the flange z to allow the belt to fall upon a loose ring 18. For this purpose, the nut 10 upon the screw 9 is turned by a lever 17 operated by a wire y, Fig. 1. The lever 17 is adjustably connected to the nut by a pin 16.
Patent GB-257318-A (GB)
Title: Improvements relating to ground-box, man-hole, or inspection covers and the like
IPC: E02D29/14
Filed: 1925-05-21
Abstract: 257,318. Bentley, H., and Bentley, J. N. May 21, 1925. Manhole covers.-A manhole or inspection cover 1 is secured by one or more turnbuttons or studs 7 each having two lateral projections 10, 11, the projection 10 engaging the lower inclined surface of a lug 5 on the frame to lock the cover, and the other projection 11 engaging the upper inclined surface of the lug to raise the cover from its seat when the stud 7 is turned for unlocking. In the locking position shown, the projection 11 bears against the underside of the cover to support the stud 7 against bending. The rotation of the stud is limited by a stop on the cover or frame. The cover bears against a rubber or like packing ring 12 and is prevented from turning by the engagement of a projection on the frame with a recess in the cover.
Patent GB-325433-A (GB)
Title: Improvements in steel retainer for rock drills
IPC: B25D17/08
Filed: 1929-04-29
Abstract: 325,433. Triggs, W. W., (Ingersoll-Rand Co.). April 29, 1929. Percussive drills.-The straight portions R of a tool retainer are so spaced that the collar J on the drill steel cannot pass between them. Shoulders b, formed on both sides of the block V to allow for reversal when wear has taken place, engage the front end A of the tool to keep the retainer in alignment. To disengage the drill steel, the yoke is rocked sideways the blocks V pivoted on trunnions K, being strained apart to allow for this. Springs Y cushion the blows of the collar J on the yoke P.
Patent GB-133949-A (GB)
IPC: F16C33/36
Abstract: 133,949. Aktiebolaget Svenska Kullagerfabriken. Oct. 17, 1918, [Convention date]. Roller bearings.-A roller bearing having one or more rows of conical rollers is provided with pressure flanges to take thrusts in the direction of the larger ends of the rollers, and with guideflanges preventing movement of the rollers in the opposite direction, the guide-flanges contacting with the rollers at two or more points spaced apart in the direction of rotation. The flanges 111, 112. Fig. 28, take end thrusts and a guide-flange 110 has convex spherical surfaces making surface contact with concave ends of the rollers. If the surfaces in contact are not of the same curvature, contact is made at two points not in the same radial line. Each roller is thus guided by one point at its larger end and at least two points at its smaller end. The pressure flanges may be spherically concave, engaging convex ends of the rollers, and the centre of the sphere at the other end may be on the axis of the bearing at the common apex of the conical surfaces of the rollers. The flanges are integral with either race or separable and connected by a sleeve 113 or by screws, bolts, or rivets. The spherical ends of the rollers may be cut away or recessed to limit the contact with the flange to a zone or a line. The pressure and guiding surfaces instead of being at the ends of the rollers may be at the sides of annular grooves in the rollers, or on one or more ribs on the rollers, or as shown in Fig. 51 they may be formed on rings S, T capable of rotating on the rollers. As shown in Fig. 27. an additional flange 106 is provided to enable a single row bearing to be handled as a unit. Filling-openings 107, 108 may be formed in the flanges 106, 103. The outer roller race is slightly convex. Fig. 32 shows an arrangement in which the guide-flange 127 for two rows of rollers is separate from and mounted loosely in the outer race 128. The ring 127 may be integral with a roller cage 131. The invention is applicable to thrust bearings, the guide-flange being integral with one of the race rings, or as shown in Fig. 35, separate from the race rings and associated with a cage 146. The guiding surfaces may be formed on the cage itself. Instead of being conical, the rollers may be sections of spheres, and they may be built up of sections placed side by side. Fig. 18 shows a modification in which the rollers of two rows overlap axially and run on separate tracks. Two spherical guiding surfaces 69 and two pressure flanges 68 are formed on the inner race ring.
Patent GB-665936-A (GB)
Title: Electro-magnetic strain gage
IPC: G01B7/24
Filed: 1949-05-19
Abstract: 665,936. Electric strain gauges. BLACK & DECKER MANUFACTURING CO. May 19, 1949. [July 8, 1948] No. 13399/49. Class 40 (i)., An electromagnetic gauge for measuring the strain of a centrally loaded beam 1 consists of two magnetic elements 4, 8, secured to the beam at points 3, 9 on opposite sides of the line of application of the load 2, and shaped so as to be spaced from the beam at their adjacent ends which form respectively pole pieces carrying coils 6, 7 and a coacting armature. The coils are disposed one above and one below the horizontal neutral plane of the beam so that on deflection of the beam the upper air gap 11 closes and the lower air gap 12 widens, the magnetic change being measured by known electrical means.
Patent GB-897943-A (GB)
Title: Process for the manufacture and isolation of acrylic acid úe-butyl ester
IPC: C07C69/54
Filed: 1960-04-14
Abstract: 897,943. Ammonium bisulphate. KNAPSACK-GRIESHEIM A.G. April 14, 1960 [April 24, 1959], No. 13468/60. Class 1(2) [Also in Group IV(b)] Ammonium bisulphate is obtained as a byproduct in a process for the preparation of acrylic acid n-butyl ester in which acrylonitrile is hydrolyzed in the presence of sulphuric acid and the product esterified with butanol. The impure compound contaminated with acrylic acid, hydracrylic acid and stabilizer residues is obtained as a molten mass from the base of the esterification column 10, heated in a rotary kiln 57, dissolved in water 58 and stirred with active carbon. The solution is filtered 64, and evaporated 68 to yield a white product.
Patent GB-135141-A (GB)
IPC: C01D3/16
Abstract: 135,141. Riiber, C. N. June 12, 1919. Alkali-metal chlorides.-In the purification of a chloride solution before electrolysis, the solution is treated with an alkali-carbonate, boiled, and filtered at a temperature as high as, or higher than, that prevailing in the anode chamber and diaphragm of the cell. Precipitation in the diaphragm of substances less soluble at high temperatures, such as basic magnesium carbonate, is thus prevented. Before boiling, the solution may contain carbonic acid in excess of that required for the formation of normal carbonate. Caustic alkali from the cell, or alkali carbonate, may first be added till the liquid is alkaline, the precipitate being allowed to settle and the liquid filtered, treated with carbon dioxide or limestoneburner or combustion gases, and boiled. Alkali bicarbonates may instead be added directly to the liquid.
Patent GB-638368-A (GB)
Title: Improvements in and relating to methods of and apparatus for frequency modulation
IPC: H03C3/32
Filed: 1947-05-20
Abstract: 638,368. Frequency modulation. BRITISH THOMSON-HOUSTON CO., Ltd. May 20, 1947, No. 13559. Convention date, May 22, 1946. [Class 40 (v)] In frequency modulation apparatus of the type comprising a pair of oscillators tuned to different frequencies, their resonant circuits being coupled so that oscillations occur at a common frequency, and frequency modulation being effected by controlling the relative amounts of power fed to the oscillators, the oscillators consist of magnetrons having resonant anode circuits in the form of Lecher lines. Fig. 6 shows a pair of magnetrons 50, 51, having resonant anode circuits consisting of Lecher lines 54, 55, which are tuned to different frequencies. The resonant circuits 54, 55 are coupled by magnetic or other means such as a coaxial cable, so that the system resonates at a common frequency. Frequency modulation is effected by modulating the voltages applied to the anode-cathode circuits of the magnetrons by means of push-pull amplifier 62 which is fed from a source of modulating signals 77. The Specification as open to inspection under Sect. 91 includes a description of two triode oscillators used in place of the magnetron oscillators. This subject-matter does not appear in the Specification as accepted.
Patent GB-135676-A (GB)
IPC: F01D1/28
Abstract: 135,676. Zielinski, L. Jan. 4, 1919. Oppositely-running rotor type.-A turbine, applicable also as a compressor or the like, cornprises two sets of cylindrical chambers 7 - - 11, 17 - - 21 secured respectively to hollow shafts 5. 4 and rotated in opposite directions by motive fluid admitted through a hollow stationary shaft 2 and passages 3 to nozzles 27 - - 36 which are arranged in the periphery of the chambers so that. one set is driven in the direction of the arrow x and the other in the direction of the arrow y. Blades 43, 44 may be. arranged on the cylinders to receive the jets of steam from the interior nozzles. Distance-rings 42 are provided, together with circular packing grooves. The nozzles may be arranged in the lateral walls of the chambers, or they may be arranged for inward radial. flow.
Patent GB-514517-A (GB)
Title: Process for the manufacture of continuous artificial filaments particularly suitable for transformation into staples
IPC: D01D5/04
Filed: 1938-05-06
Abstract: 514,517. Artificial filaments. SOC. RHODIACETA, and ALIBERT, J. M. May 6, 1938, Nos. 13604 and 25609. [Class 2 (ii)] Artificial filaments having points of diminished strength along their length which render them readily convertable into staple fibres, are prepared by subjecting the filaments produced by extrusion of a solution of a cellulose ester or ether in a solvent or solvent mixture to a temperature sufficiently high to ensure faster evaporation of the solvent at various points along their length. The filaments are passed over heated bars carried on the outer surface of a hollow cylinder containing hot fluid, or over bars adapted to form a cylindrical cage and through which an electric current is passed, the bars being placed perpendicularly or obliquely to the direction of travel of the filaments. The heating operation is performed in a chamber which permits the recovery of solvents, after which the filaments are dried or coagulated in. a suitable bath. Examples are given in which a solution of cellulose acetate in acetone and ethyl alcohol is extruded.
Patent GB-1298183-A (GB)
Title: Improvements in switched electric bulb sockets
IPC: H01R33/955
Filed: 1971-05-07
Abstract: 1298183 Lampholders STERNCO INDUS. TRIES Inc 7 May 1971 [21 Aug 1970] 13793/71 Heading H2E A switched lamp socket comprises an insulating casing 10 of two separable halves 11, 12 formed with transverse walls 36, 37, 42, 43 forming end compartments housing socket contacts 13, 14 suitable for lamp bulbs interconnected by strips 15, 16 and an intermediate switch housing compartment 32. Electric supply conductors 27, 28 are connected respectively to a U-shaped member 20 riveted to the strips 15, 16 and to a base contact member 25, which members are held, when the socket is assembled, in engagement with the casing halves 11, 12 by the ends 64, 66 of holding posts 63, 65 integral with the halves 12, 11. Two resilient contact elements 53, 54 are clamped between notches 49, 50 in the walls 42, 43 and the walls 36, 37 such that prongs 67, 69 extend into the socket-housing compartments and prongs 68, 70 into the switch-housing compartments where they are contactable with fingers 60, 61 of the base contact 25. A switch 81 comprises a shank 80 rotatably mounted in grooves 79a, 79b in the casing halves with an actuating head 83, rotation causing the head to engage the prongs 68, 70 and move them into contact with the fingers 60, 61.
Patent GB-529045-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K3/51
Filed: 1939-05-09
Abstract: 529,045. Securing coils for dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. May 9, 1939, No. 13846. Convention date, May 11, 1938: [Class 35] A securing arrangement for the end windings of a long rotor comprises a ring on a bevelled seating surface on the rotor body itself or on a part applied thereto which ring bears against the end winding support and has a coefficient of expansion greater than that of the seating part. In the form shown, the ring k bears against the coil end support g and is carried by a bevelled ring h of material having' a lower coefficient of expansion and shrunk on to the shaft. The coil ends b rest on insulating shoes d sliding on the end of the shaft. With changes of temperature the ring k slides along the ring h in accordance with changes in dimensions of the windings. By making the ring k with a modulus of elasticity smaller than that of the seating its centrifugal expansion may be caused to assist the thermal expansion.
Patent GB-873953-A (GB)
Title: Improvements in winches for hauling and lifting apparatus
IPC: B66D1/48
Filed: 1960-04-20
Abstract: 873,953. Winch driving-gear. CLARKE, CHAPMAN & CO. Ltd., and RAILSTON, D. W. April 20, 1960, No. 13880/60. Class 78 (5). Resilient torsion means (not shown) are disposed between a drive shaft 3 and a winch drum 1. Deflection of the resilient means (i.e. relative rotation between the shaft 3 and the drum 1) results in actuation of an epicyclic gear 11 to rotate a member 24. The latter is connected to control means (not shown) of the prime mover of the winch. The gear 11 may be disconnected from the shaft 3 by means of an electromagnetic coupling or (as shown) by dog clutch elements 15, 16.
Patent GB-540519-A (GB)
Title: Improvements in welding
IPC: B23K5/00
Filed: 1940-09-05
Abstract: 540,519. Welding; uniting by fusion. LINDE AIR PRODUCTS CO. Sept. 5, 1940, No. 13890. Convention date, Nov. 24, 1939. [Class 83 (iv)] Steel rails, plates, pipes, structural members &c. are welded by bringing the parts into abutment; applying heat and pressure to effect a pressure weld and then fusing the outer periphery of the joint whilst this is still hot so as to close up the fissure F caused by flaring of the ends of the work consequent on the pressure applied. The ends of the parts may be previously ground, planed or turned so that the surfaces are substantially plane and are in contact over the entire area of the surface. Heating may be effected by electric resistance or induction, or by oxy-fuel gas flames which may be applied at the joint I or at distances not more than one inch therefrom so that the heat may be conveyed indirectly to the surfaces entirely by conduction. One or more sources of heat may be applied to either side of the joint or to opposite sides of the work. In one form the source of heat may be reciprocated over the work at the joint. In welding pipes P the parts may be placed under a pressure of 500 to 6,000 lb. per sq. inch and heated by one or more annular burners R, R<SP>1</SP> to 1000 to 1300‹ C. This burner or a separate source of heat is then brought over the joint to fuse the outer edges throughout the depth of the fissure F to complete the joint at W.
Patent GB-805993-A (GB)
Title: Percussion fuze for missiles, chiefly for mine throwers
IPC: F42C15/188
Filed: 1957-05-01
Abstract: 805,993. Ammunition fuzes. DIXI, S. A. May 1, 1957 [Sept. 5, 1956], No. 13926/57. Class 9(1) A percussion fuze for missiles has a casing comprising three coaxial cylinders 1, 2, 3 connected by screwthreading. The cylinder 1 houses an outer piston 4, 4a carrying a rod 5 which extends through an inner piston 7 and the cylinder 2 into a passage 13b extending through a rotatable carrier 13 mounted on a spindle 14 and housing a detonator 15 and a firing pin 17. A ball 6 housed in the cylinder 1 is held in locking engagement with piston 4 by the inner piston and the opening in piston 7 for the rod 5 is sealed by a disc 9 held in place by a spring 8. An axial flash passage in the cylinder 3 is screened by a shutter 16 attached to the carrier 13 and having an aperture aligned with the detonator 15. On firing a missile fitted with the fuze, the piston 7 sets back due to inertia and compresses spring 8. Consequently the pressure in the chamber 7a between the two pistons is reduced, thereby damping the movement of piston 7. The disc 9 no longer seals the clearance around rod 5 and air leaks into the chamber 7a, so that the piston 7 moves until the ball 6 escapes into the chamber 7a and 'frees the piston 4, 4a. As the projectile decelerates the spring 8 returns the disc 9 into sealing engagement with the piston 7, whereupon the disc and piston move forward together compressing the air in chamber 7a, with the result that piston 4, 4a moves forward and compresses the air in chamber 11 between the piston face 4a and a diaphragm 10 closing the nose of the fuze. From chamber 11 the air leaks around the pistons, which move forward together until the rod 5 frees the carrier 13. The carrier 13 then rotates driven by a torsion spring surrounding the spindle 14 until the pin 18 is aligned with the rod 5. The fuze is then armed for direct action on impact, when the rod 5 is driven against the pin 17 causing the safety pin 18 to rupture and allow the pin 17 to fire the detonator 15.
Patent GB-234289-A (GB)
Title: Improvements in or relating to hot-water systems
IPC: F24D17/00
Filed: 1924-06-10
Abstract: 234,289. Neild, J. June 10, 1924. Heating water.-An installation comprises a cold-water tank CW.3, a boiler HW.1, a bath 5, a valved pipe CW.7 connecting the tank and boiler, a cold-water pipe CW.12 leading to the bath from a point in the pipe CW.7 between the valve and the boiler, and a hot-water pipe' HW.9 leading from the lower end of the boiler to the bath and other delivery points.
Patent GB-593280-A (GB)
Title: Improvements in or relating to the production of compositions for agricultural and like purposes
IPC: A01N25/08
Filed: 1945-06-04
Abstract: A dust-like weed-killing preparation is obtained by slaking quick lime with an aqueous solution of a compound containing a radical C6H4-nXnY-O-CHR-CO-, X and Y being hydrogen, halogen or a methyl group, n an integer not greater than 2 and R hydrogen or an alkyl group, and the amount of the solution or dispersion used being such that a dry pulverulent product is obtained.  Suitable compounds are mono-chlorophenoxyacetic acid, 2, 4-dichlorophenoxyacetic acid and 2-methyl-4-chlorophenoxyacetic acid and their salts and other derivatives.  The slaking is preferably initiated at an elevated temperature up to the boiling point of the solution, e.g., temperatures of 80-90 DEG C.  The slaking may be effected with a mixture of the aqueous solution or dispersion and an aqueous slurry of a powdered diluent, e.g., a mixture of an aqueous solution of sodium 2-methyl-4-chlorophenoxyacetate with a clay slurry.  The product may be subjected to sieving or air classification to remove granular unhydrated material or other impurities, and/or may be mixed with powdered chalk, ground limestone, sand, clay, dry earth or further quantities of slaked lime, or a mixture of such diluents. Specifications 573,929 and 574,274 are referred to.
Patent GB-987726-A (GB)
Title: Device for performing a swaging operation
Inventor: NEALE LESLIE ARTHUR
IPC: B25B27/10
Filed: 1963-04-09
Abstract: 987,726. Jointing by stamping. HAYDEN-NILOS Ltd. March 19, 1964 [March 9, 1963], No. 14017/63. Heading B3Q. A die-set for contracting a metal band 23 around a hose for securing the hose to a coupling &c. comprises a pair of dies 18 each having a semicircular recess 19 and an extension 20, 21 on at least one side of the recess, the extensions extending the enclosing limits of the dies and overlapping each other when the dies are closed. As shown, Fig. 2, an extension lip 20 on one die engages a slot 22 in the other die. The dies are bolted to jaws 1 which are mounted on pivots 2 in a frame 3 and are interconnected by links 5. A pin 6 passing through the inner ends of the links is guided in slots 7 in the frame 3. Operating handles 11 are secured to the links 5. The dies may be located by a plate 29 in a bench-tool, Fig. 5, the upper die being carried by a jaw 1 on a pivot 31. Toggle-links 5 connect the free-end of the jaw 1 to an upper pivot 32, and an operating arm 11 is secured to the top link 5. The arm 11 may raise the jaw 1 until the jaw-pivots and the lower pivot on the top link 5 are in a straight line. If the jaw is raised further, into the position depicted in broken lines, it will hold itself open. A bracket 33 may indicate the correct position for the hose. In a further form of portable tool, Figs. 7 and 8, which may also be used on a bench, each die is in two parts 44 held in the jaw-openings 4 by springs 48 engaging pegs 49. The parts 44 have overlapping extensions 20, 21, and the top-jaw 1 is turned about a pivot 38 by a cam or eccentric 42 on a handle 11 which pivots in links 5. As the dies are closed they turn in the jaw-openings 4, against the bias of the springs 48, into the position depicted in Fig. 6 (not shown). Flanges 45 locate the dies endwise. The dies may also be used in a press, Figs. 9-12 (not shown).