baber/WOPTO huggingface dataset:
Patent GB-665294-A (GB)
Title: Control for electric circuit
IPC: B66B1/46
Filed: 1949-01-21
Abstract: 665,294. Glow discharge indicators. WAYGOOD-OTIS, Ltd. Jan. 21, 1949. [June 5, 1948] No. 1721/49. Addition to 610,407. Class 40 (i). [Also in Groups XVIII and XL (c)] In a control such as is used for operating an electric lift as described in the parent Specification, in which a cold cathode gas-filled valve has a source of current for its anode-cathode circuit and a source of alternating current connected between the anode-cathode circuit and earth the control being manually operable by a person touching it who completes a firing circuit from earth via his body insulating means are provided extending around and projecting beyond the face of the button for protecting it against accidental touching. Fig. 6 shows the electrical connections to two cold cathode valves used as the "up" and "down" controls in a lift control system. A D.C. voltage is applied across lines L1 and L2 which has a value between the sustaining and breakdown voltage for the valves so that a valve once fired will remain conducting even when the person operating the firing circuit has removed his finger from the control button. An A.C. voltage is applied across lines L3, L4 so that when a person touches the insulated front of either button 47 or 62 which are backed by a conductive portion joined to that part of the valve envelope which is adjacent to the anode, a capacitor is formed and a voltage is applied between the envelope and anode of the valve which causes it to fire. The light from the valve when fired is transmitted through a translucent arrow shaped portion of the button, Fig. 2 (not shown) to indicate that the call has been registered. An A.C. supply may be connected across lines L1, L2 instead of a D.C. source in which case the valve fires only whilst the control is touched. Shields 55, 65 associated with each valve are connected to a point in the anode-cathode circuit of each tube so as to prevent the valves from firing by stray capacitive effects to earth: Fig. 4 shows a sectional view of one of the controls. The top 54 of the valve envelope 13 is coated with a transparent conductive material such as that having the Trade Name "Nesa" or a translucent conductive material such as that having the Registered Trade Mark "Aquadag" and is connected via a spring 53 to the conductive portion 47 at the back of the control button 45. The front 46 of the button which is to be touched is formed of an insulating material of high dielectric constant such as phenol formaldehyde and the button is mounted in an arrow shaped surrounding 40 which is made of translucent material such as lucite and which projects round the button to prevent inadvertent operation of the control. The button and its surrounding members extend through the face plate 36 and can be removed in conjunction with the face plate, Fig. 1 (not shown) to give access to the valves. The face plate is normally held in position by spring latches, Fig. 5 (not shown).
Patent GB-117577-A (GB)
Title: Improvements in Wrenches.
Inventor: BERNARDI NERI MARTINI
IPC: B25B13/16
Filed: 1917-08-13
Abstract: 117,577. Bernardi, N. M. Aug. 13, 1917. Addition to 111,091. Sliding-jaw wrenches.- Consists in various modifications of the wrench described in the parent Specification in which the sliding jaw is locked to the shank of the fixed jaw by one or more wedges which are driven in between the sliding jaw and the shank and are connected to the shank by an operating screw. In one form, Fig. 1, the sliding jaw 4 is locked to the shank 5 of the fixed jaw 1 by two wedges 13, 14 forming the ends of a fork 12, the lower end 17 of which loosely embraces a sleeve 16 screwed on the threaded end 3 of the shank 5. A collar 15 secured to the sleeve prevents relative longitudinal movement of the fork and sleeve and serves to turn the sleeve so as to operate the wedges. The jaw 4 is positively adjusted by a worm 9 carried by the side plate 10 of the wrench and engaging a rack 7 connected to the jaw 4 by a pin 8 and mounted in a groove 6 in the shank 5. In another form, Fig. 4, the wedges 13, 14 form part of or are carried by a casing 18 operated by a sleeve 16 and collar 23. The wedges 13, 14 may be pivoted to the casing 18. A spring 24 arranged between the jaw 4 and shank 5 prevents uncontrolled movement of the jaw. The shank 5 may be of circular section and the wedges shaped accordingly. In the form shown in Fig. 14, the shank 2 is of circular section and a conical wedge 30 preferably split into four sections 31, 32, 33, 34, Fig. 17, to render it resilient, is employed. The wedge is carried by a screwed sleeve 28 operated by a screwed sleeve 35 rotatable on the shank 2. The sliding jaw 40 is provided with a part 41 having a projection 27 which slides in a guidegroove 29 in the shank 2 and a spring 42 is provided. In other forms employing a circular shank, the casing carrying the wedges is screwed directly to the shank and a spring attached to the sliding jaw carries a block engaging the shank to prevent uncontrolled sliding movement of the jaw.
Patent GB-836279-A (GB)
Title: Syringe push rod
IPC: A61M5/315
Filed: 1958-01-20
Abstract: 836,279. Hypodermic syringes. AMERICAN HOME PRODUCTS CORPORATION. Jan. 20, 1958 [March 26, 1957], No. 1818/58. Class 81 (2). A push-rod for a disposable syringe has the attachment means for connecting it to the piston stopper, flexibly mounted on it so as to permit slight lateral movement of the push-rod without displacing the stopper. Thus, in the form shown the push-rod 22 is made tubular and the screwed portion 23, for insertion into the threaded hole 24 of the stopper 25, is carried on a thin diaphragm 26, which may be divided to form a number of spokes. The diaphragm may be formed in one piece with the push-rod, if this is made of suitable synthetic resin, or it may be of metal moulded into the material of the rod. The connection between the push-rod and the stopper may be with threaded parts or a selftapping screw may be used in one part. The push-rod, if hollow, may serve as a cover for the needle prior to use, being retained in that position by a screwed or push-on connection. Specification 754,835 is referred to.
Patent GB-1079822-A (GB)
Title: Process for the production of high molecular weight,thermoplastic polycarbonates
Inventor: CURTIUS ULRICH
IPC: C08G64/30
Filed: 1966-01-14
Abstract: In the manufacture of polycarbonates by transesterifying (a) a diester of carbonic acid with a dihydric phenol or (b) a bis-aryl, bis-alkyl or bis-cycloalkyl ester of a dihydric phenol either alone or in admixture with a dihydric phenol, there is used as a catalyst a salt of a quaternary ammonium, phosphonium or arsonium base. Suitable salts are the bromides, phenolates or diaryl phosphates or, most preferably, the tetraaryl borohydrides. Examples describe the reaction of diphenyl carbonate or di-o-chlorophenyl carbonate with bisphenol A or a mixture thereof with 4,41-dihydroxy-dipheny -methane or 1,1-(4,41-dihydroxy-diphenyl)-cyclohexane.
Patent GB-792518-A (GB)
Title: Method for producing galacturonic acid
IPC: C07H7/033
Filed: 1956-01-19
Abstract: Galacturonic acid is produced by reacting enzymes belonging to the pectase and pectolase group with aqueous solutions of pectic substances, causing the resultant liquid to react with a cation exchange resin to remove any calcium, magnesium or the like ions remaining in the liquid, neutralizing the solution with lime or with a mixture of lime with caustic soda or sodium carbonate, concentrating, if necessary, to precipitate the salts, dissolving the precipitated salts in water, causing the solution of said salts to react with a cation-exchange resin and separating the solution of pure galacturonic acid thus obtained.  Raw pectic material such as natural beetroot pulps, pomace or commercial pectin may be used as starting materials and it is advantageous to boil the raw material in water and then cool before the enzymatic treatment.  Preferred enzymes are polygalacturonases and pectin-methylesterases.  When starting from commercial pectins, sulphites, sulphates and antiseptics are removed by passing over anionic and cationic exchange resins.  In an example, raw beetroot pulp is boiled in water for one hour, the solution is cooled and then reacted with a pectolytic enzyme for five days, the liquid is separated off and passed over a cation exchange resin, neutralized with lime and soda concentrated and allowed to stand, whereby the sodium-calcium salt precipitates, the latter is filtered off, dissolved in boiling water and passed over a cation-exchange resin, whereby a pure solution of galacturonic acid is obtained. The acid may be separated out by crystallization or the solution may be used as it is.
Patent GB-122707-A (GB)
Title: Anti-vibration Suspension Device.
Inventor: ROSS FREDERICK ALEXANDER
IPC: H01R33/975
Filed: 1918-02-02
Abstract: 122,707. Ross, F. A. Feb. 2, 1918. India-rubber and like springs; strip springs. - An anti-vibration support for an electric lamp or a delicate instrument, for use on ships or elsewhere, consists of inner and outer frames connected by strips or segments of rubber or woven, or braided material, such as wire gauze. In the case of a fabric, the strips have their edges diagonal to the mesh, so that no wires &c. are secured to both frames. The frames may be grooved for the reception of the flexible material, which may be beaded at its inner and outer edges. In the arrangement shown, the strips a overlap and are attached to the inner frame in two planes at a small distance apart. Alternatively, two or more supports, each having strips in one plane only, may be provided for each fitting.
Patent GB-116863-A (GB)
Title: An Improved Clip for Stopping Leakage in Damaged Pipes.
Inventor: MEREDITH THOMAS DAVIES
IPC: F16L55/172
Filed: 1918-02-04
Abstract: 116,863. Meredith, T. D. Feb. 4, 1918. Repairing leaks.- A clip is placed over the damaged pipe e, the clip consisting of two parts hinged together, with a flush hinge k and lined with a single piece of ir.dia-rubber g. The step has flanges c which are secured by screws d.
Patent GB-1503464-A (GB)
Title: Apparatus for protecting metallic structural elements against corrosion
IPC: F16L58/10
Filed: 1976-01-19
Abstract: 1503464 Protecting metal from corrosion by sleeving in synthetic plastic O E LIDDELL 19 Jan 1976 02004/76 Heading C7E Metallic columnar structures are protected from corrosion by water and/or air by wrapping a pliable synthetic plastic sheet 41 around the structure a pair of abutting pole pieces 46, 48 being secured to the vertical overlapping edges of the sheet, upper and lower sealing bands of compressible foam 54, 56 being interposed between the sheet and structure and wrapping bands 53 securing the sheet to the structure and compressing the foam sealing bands 54, 56. The pole pieces 46, 48 which may be of wood, metal or plastics and fixed to the sheet edges by cement or by stapling extend between the sealing bands 54, 56 which may be made of polyurethane, polyether or neoprene foams. The sheet 41 is preferably made of P.V.C. and sealing strips of foam or mastic are preferably attached to the pole pieces 46, 48, the ends of which may be releasably joined in a socket 50. The wrapping bands 53 may be metallic or synthetic plastic and the ends of the bands are secured together by a clamp or clip 58.
Patent GB-660685-A (GB)
Title: Improvements in or relating to couplings for the transmission of heavy and irregular torsional loads
IPC: C13B10/06
Filed: 1949-01-26
Abstract: 660,685. Universal joints. FLETCHER & CO., Ltd., G., and MURRAY, C. W. Jan 26, 1949, No. 2085/49. Class 80 (ii) Shafts 11, 13 are universally coupled by an intermediate shaft 12 and a pair of muffs 16, 17, the ends of the shafts 11, 16, 13 being of square section while the interior of each muff has at each end a pair of parallel surfaces 23, 24 and, at right-angles thereto, a pair of transverse rounded ribs 25, 26, the pair of parallel surfaces at one end of a muff being at right angles to the parallel surfaces at the other end of that muff but parallel to the parallel surfaces at the same end of the other muff. The muffs are retained in position, with rounded lugs 19 abutting against shoulders 20, 21 on the shafts 11, 13, by stops 18 removably secured to the shaft 12 and abutting against rounded lugs 22 on the muffs. Lubricant is supplied through ducts 34 closed by threaded caps 31 to grooves 35 in the surfaces 23, 24.
Patent GB-112836-A (GB)
Title: Improvements in or relating to Elevating Trucks.
Inventor: WADE HAROLD
IPC: B62B3/06
Filed: 1917-02-12
Abstract: 112,836. Wade, H., (Chapman Double Ball Bearing Co.). Feb. 12, 1917. Addition to 19768/14. Hand-trucks.-The truck described in the parent Specification is improved by providing a toggle-device which locks the load platform 3 in the raised position and can be released in all positions of the turntable 8 by moving the propelling-handle 16 rearwards. To prevent the tension of the chain 12 that connects the platform to the handle from interfering with the free movement of the turntable 8, the mechanism may be so arranged that slack is formed in the chain when the platform is fully elevated. The toggle-device may comprise a pair of toggles each consisting of a link 32 pivoted at 35 to a member or bracket 15 on the underframe 1 and pivoted at 33 to a link 31 which is pivoted at 34 to the platform 3. The releasing-device consists of a segment 30 which is arranged under the ends 33<a> of the levers 31 and is secured to levers 26 pivoted on the bracket 10 on the turntable, pins 20 on the levers engaging the catches 24 for the chain-wheel 11. On depressing the bolt 18 and moving the handle rearwards, pins 38 on the bolt engage the catches and cause the sector 30 to rise and trip the toggles, thereby permitting the platform to fall. To permit of the platform being lifted in stages, the chain-wheel may be provided with a number of teeth 7 for engagement with the catches and the driving-projections 19 on the bolt 18. The rear teeth 7 may be arranged to pass in advance of the catches 24 when the platform is fully elevated so that, on releasing the handle, the chain is slackened.
Patent GB-1013398-A (GB)
Title: Microwave food-heating apparatus
Inventor: HILTON KENNETH
IPC: H05B6/76
Filed: 1964-01-17
Abstract: 1,013,398. Microwave oven doors. HIRST ELECTRONIC Ltd. Nov. 10, 1964 [Jan. 17, 1964], No. 2190/64. Heading F4W. A microwave oven has a door 11 provided with a main pressure seal plate 18 bearing against the inner oven wall extensions 17 when the door is closed and a secondary seal formed from foam rubber 21 covered with aluminium foil 22 fixed in a channel in the oven wall. When the door is closed a ridge 23 on the door compresses the seal 22 and effects electrical contact between the door and the oven wall.
Patent GB-475761-A (GB)
Title: Improvements in and relating to straight bar knitting machines
IPC: D04B11/00
Filed: 1937-01-26
Abstract: 475,761. Knitting-machines. SCHUBERT & SALZER MASCHINENFABRIK AKT.- GES. Jan. 26, 1937, No. 2287. Convention date, Feb. 13, 1936. [Class 74 (ii)] In a straight-bar machine wherein knitting is suspended at the loops of the instep portion of a stocking during the formation of the heel portions, the knocking-over bits for the heel portions are provided with a second knocking- over point 3 in front of and at a higher level than the first or normal knocking-over point 2 so as to knock over the heel loops effectively without damaging the inactive instep loops. The knocking over points 3 and the heel loops are brought into alignment by means of an auxiliary knocking-over cam or by moving a roller 8 into the path of an auxiliary presser cam 7. When working the leg portion all the loops are knocked over at the normal knocking- over point 2.
Patent GB-266874-A (GB)
Title: Improvements in and relating to bottle crates
IPC: B65D85/30
Filed: 1926-01-27
Abstract: 266,874. Oglethorpe, E. L., and Dartford Engineering & Carriage Co., Ltd. Jan. 27, 1926. Partitioned and cellular boxes.-A metal crate for bottles &c. comprises a base 10 having a number of bottle-receiving depressions 11, an intermediate support 15 provided with aligned apertures 16, and a metal framework in which the base and support are held in spaced relationship. The base 10 and support 15 are of sheet metal and the depressions 11 in the base are frustroconical in shape to accommodate different sized bottles. The depressions 11 may be beaded at 12 to support the bases of bottles. Tubular distance-pieces 9, 14, 17 are provided in the framework to hold the parts in spaced relationship. Angle-pieces 19 are provided on the inside corners of the top portion of the crate to facilitate stacking, and the transverse bars 3, 5 of the framework are centrally arched so that the riveted ends 18 of the frame-bars are in alignment.
Patent GB-632070-A (GB)
Title: An adjustable reclining chair or like article of furniture
IPC: A47C1/0355
Filed: 1948-01-27
Abstract: 632,070. Seats and the like. LORENZ, A. Jan. 27, 1948, No. 2425. Convention date, Feb. 18, 1947. [Class 52 (ii)] In an adjustable reclining chair &c. wherein the seat, a downward extension of the back rest and a link chain composed of a number of connecting links form movable members of a link system swingably mounted on a support and wherein the movements of a leg rest, pivoted to the seat, are controlled by a controlling mechanism in dependence on the movements of a member of the link system, the controlling mechanism comprises a controlling link pivoted at one end to the leg rest and at the other end to a link of the link system. As shown in Fig. 1 the seat 12, lower extension 20 of the back rest 16 lower bent link 22 and front connecting link 24 comprise the link system which is swingably supported on the support 10 by pivots 14, 18 and is guided in its movements by a guiding link 32 pivoted at 34 to the support 10 and to the lower link 22 at 36. The leg rest 38 is pivoted to the seat at 40 and is controlled in its movements by a controlling link 42 pivoted to the leg rest and to the lower connecting link 22 at 48. In modifications the controlling link 42 may be pivoted to the front connecting link or to an extension thereof or to an extension of the lower connecting link Stops are provided for the chair in its seating and extreme reclining position and in addition a locking lever 52 may be provided for locking it in either of those positions as well as, if desired, intermediate positions. The lever 52 is operated for release by a handle 58 and comprises a spring-urged arm 54 having a slot 60 with one or more notches 62 engageable by a fixed pin 64 on the support 10.
Patent GB-192412-A (GB)
Title: Shell or grenade for infantry use
IPC: F42C15/20
Filed: 1923-01-26
Abstract: 192,412. Lafitte, T. Jan. 30, 1922, [Convention date]. Projectiles; fuzes; cartridges. -A grenade 1 intended to be thrown by hand at short ranges and to be discharged from a gun at longer ranges is formed with a tail having cross ribs 13 resembling the tail described in Specification 130,403, and is provided with a. detachable tail 2, which is put on only when the grenade is to be thrown by hand, to ensure a nose-on impact to effect the proper action of the fuze. The flexible tail 2, which is similar to that described in Specification 123,182, is a truncated cone of fabric held expanded at the free end by a ring 16. The other end is detachably secured by a split ring 15 to a ring 14 around the rear end of vanes 13, which are on the perforated cartridge socket 12. The body of the grenade is of cast iron, and is shaped as shown with a turned cylindrical part 3<a> to fit the bore of the gun. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter. The cartridges are coloured according to the ranges for which they are intended. The grenade is exploded on impact by means of a detonator 5 and a striker 7, which is driven in by the impact. The striker 7 is normally locked by an oblique pin 10, which is removed by hand before the grenade is thrown, or by the set-back of a weight 11 when the grenade is discharged from a gun. The striker 7 is moreover screwed into a sleeve 6 in such a way that its rotational inertia helps to screw it inwards when the grenade is thrown; and a vane-wheel 8 rotates the striker during flight, causing complete disengagement cf its threads from the sleeve 6, leaving only a light spring 9 to hold the striker forwards until impact. The vane-wheel is cone-shaped as shown, and is perforated at 17 to reduce air resistance. The screw threads between the sleeve 6 and the detonator socket 4 are pitched in the opposite direction to the screw-threads between the striker and the sleeve to ensure safety in assembling. This subject-matter does not appear in the Specification as accepted.
Patent GB-904835-A (GB)
Title: Frequency modulation detector circuits
IPC: H03D3/32
Filed: 1959-01-22
Abstract: 904,835. Frequency discriminators. RADIO CORPORATION OF AMERICA. Jan. 22, 1959 [Feb. 25, 1958], No. 2483/59. Class 40 (5). A beam switching electron tube 48 demodulates an F.M. signal applied to its grid 46, the anodes being connected to bifilar wound windings 78, 80 tuned by a capacitor 82 connected across one winding to the mean signal frequency and both windings being coupled to a tuned secondary winding 84 with earthed centre tap and ends connected to beam deflection electrodes 54, 56. At the mean frequency the deflection voltage is in phase quadrature with the control grid voltage and each of the halfcycle pulses of beam current, due to the tube becoming self-biased, divides equally between the anodes, but a frequency deviation produces phase shifts in the primary and secondary tuned circuits, resulting in a phase lag of the deflection voltage of sense dependent on that of the frequency deviation, and unequal current to the anodes. These may be applied directly, the tube being a power amplifier, to the push-pull output transformer 76 and speaker 92. Volume may be controlled by a potentiometer 64 varying the voltage of the screen electrode 52. As shown, the screen grid, control grid and cathode may form a self-oscillating circuit tuned to the mean frequency and locking in with and following the frequency variation of an injected F.M. signal, which may be a television receiver sound intercarrier frequency.