baber/WOPTO huggingface dataset:
Patent GB-706605-A (GB)
Title: Photographic objective
IPC: G02B9/12
Filed: 1952-05-23
Abstract: 706,605. Optical objectives. AGFA CAMERAWERK AKT.-GES. May 23, 1952 [June 9, 1951], No. 13180/52. Class 97(1) In an objective of the type shown comprising a negative component between two positive components in which the arithmetic mean of the mean refractive indices of all the elements is greater than 1.66, those of the positive elements being at least 1.69, and that of the central component at most 0.05 greater than the index of the negative element of the rear component, and the difference of index at the cemented surface less than 0.12, the front simple positive element is a meniscus convex to the front the radius R 1  being greater than 0.35 F but not exceeding 0.45 F and being greater than 0.1 R 2 , the separation e, is at least 0.2 times the total length of the objective, which is, at most, 1.26 times the diameter 0 of the maximum aperture, the thickness d, is not greater than 0.95 e, and the absolute value of R 3  amounts to at least 2.2°, F being the focal length of the objective. Numerical data for two examples of the lens shown are given.
Patent GB-639538-A (GB)
Title: An apparatus for manufacturing reinforced tubes from thermoplastic materials by extrusion
IPC: B29C48/13
Filed: 1946-05-02
Abstract: 639,538. Extrusion machines. SOC. PER AZIONI LAVORAZIONE MATERIE PLASTICHE. May 2, 1946, No. 13334. Convention date, Dec. 9, 1943. [Class 87 (ii)] [Also in Group XXVIII] A reinforced thermoplastic tube is formed by feeding a helical wire coil 6 through a vertical annular passage 3 in the top of a casing 1, the passage being in line with the outlet from an extrusion chamber 4 to which the plastic material is supplied at 5, and being formed by a central rod 2 which is reduced in diameter within the chamber 4. Longitudinal reinforcing wires 8 are fed through bores 7. in the casing around the passage or through bores in the larger section of the rod. The plastic material may be supplied to an annular chamber 9, Fig. 3, communicating through the wall 11 with the chamber 4 by a series of holes increasing progressively in size from the point 10 by the inlet to the opposite point 101.
Patent GB-553603-A (GB)
Title: Improvements in or relating to hydraulic control mechanism
IPC: B62D5/07
Filed: 1941-10-20
Abstract: 553,603. Hydraulic control mechanism. CLAYTON DEWANDRE CO., Ltd., and EDGE, S. H. Oct. 20, 1941, No. 13478. [Classes 69 (ii) and 135] [Also in Group XXI] A hydraulic control mechanism for selectively operating one or more of a series of servocylinders 7, Fig. 1, from a pump 2 is constructed so as to apply a graduated pressure for effecting operations such as starting, stopping, speed variation, steering of vehicles, or for simultaneously controlling the rotation of a gun turret and elevation of guns, is constructed with selective means for operating reaction valves so as to direct the output of the pump 2 to the desired servo-cylinder 7 instead of allowing the output to return direct to the tank 1 via pipe 5. As shown in Fig. 2, the cylinders 7 are cut off from the supply pipe 3 by spring-pressed valves 26, and a plunger 8 is raised by a spring 17 to permit the output to have access to a port 13 and outlet 15 connected to the exhaust pipe 5. On operation of a universally mounted lever 31 with four arms 36 a selected plunger 28 is depressed by one of the arms and a beam 30 acts upon a collar 16 on plunger 8 and depresses this so as to close on the valve seat 10. At the same time a ported plunger 20 is depressed and acts upon a further plunger 19 via a spring 22 and pressure is put upon the valve member 26 to direct the pressure fluid to the required cylinder 7 the pressure applied being proportional to the pressure put upon lever 31. The reaction valves described may be replaced by sliding ported piston valves which connect the cylinders 7 to the pump output. In a further modification, Fig. 7, the lever 31 is replaced by a number of key levers 54 which can be operated more than one at a time to act upon the desired number of plungers 49 which are equivalent to the plungers 20, Fig. 2. Each time a key lever is operated a lever 53 depresses the plunger 8 to close the exhaust valve at the same time as the valves are opened to the cylinders 7.
Patent GB-457174-A (GB)
Title: Improvements in or relating to the preparation of ª‡-methylacrolein
IPC: C07C45/29
Filed: 1936-05-12
Abstract: a -Methyl acrolein is made by the oxidation of methyl allyl alcohol by means of selenium dioxide or selenious acid.  The selenium compound may be dissolved in an indifferent solvent such as an alcohol or ether or dioxane, and, if not wholly dissolved, is kept in suspension by agitation.  Examples describe the oxidation by means of selenium dioxide in hexyl alcohol and of selenious acid in dioxane.
Patent GB-1427424-A (GB)
Title: Fluorescent gas discharge display panel
IPC: H01J11/42
Filed: 1973-03-21
Abstract: 1427424 Gas discharge display panels FUJITSU Ltd 21 March 1973 [27 March 1972] 13491/73 Heading H1D Areas 11 of luminescent material provided adjacent each discharge region of a gas discharge display panel are surrounded by a lightattenuating dielectric layer 9 to prevent interference between adjacent areas. The luminescent material may be zinc-oxide or zinc-silicate. The dielectric layer 9 may be a low-melting point glass which includes PbO as a main component and a very small percentage of oxides of impurities such as Co, Ni or Cr, the amount of which determines the degree to which the glass is impervious to light. The areas 11 together with dielectric layers 9 and 10 and electrodes 12 are supported by a glass plate 8. Further orthogonally disposed electrodes defining discharge regions with the electrodes 12 are supported on a second glass plate (not shown) which may or may not support luminescent material. The plates are separated by a discharge space which is filled with He plus a very small amount of Xe. The luminescent material need not extend to the same level as the dielectric layers 9 and 10 (Fig. 5, not shown) and need not extend to the plate 8 (Fig. 6, not shown). In an alternative embodiment, Fig. 7, areas 21 of luminescent material with a surrounding dielectric layer 22 are supported on a plate 19 facing a second plate 13 supporting X electrodes 14 covered by a dielectric layer 15 supporting Y electrodes 16 and extensions 17 of the X electrodes covered by a dielectric layer 18. In a further alternative embodiment (Figs. 8A and 8B, not shown) the X and Y electrodes of Fig. 7 are replaced by segment electrodes for displaying numerals.
Patent GB-734105-A (GB)
Title: Treatment of low-carbon steel for cold forming
IPC: C21D7/02
Filed: 1953-05-14
Abstract: Low carbon steels after cold working but before cold shaping are kept in a cold store at a temperature not exceeding 10 DEG  C. The temperature may be between - 30 DEG  and +10 DEG  C.  The steel may be put into the cold store immediately after cold working or may remain at atmospheric temperature for such time as does not affect the ductility.  It may remain at cold store temperature indefinitely and may be easily cold formed thereafter.  The treatment is stated to reduce strain-age embrittlement.
Patent GB-135327-A (GB)
IPC: C23C2/00
Abstract: 135,327. Powanda, J. Dec. 4, 1918. Tinning and coating by dipping; pickling. - In coating sheet metal on one side only, the edges of the sheet are held above the surface of the bath, and the rest of the sheet is depressed into contact with the molten metal. The sheet, after contact with an acid brush, and during its passage-through the bath 9 is gripped at the edges between guide-plates 26, 27 and bevelled rollers 33, and depressed by rollers 35. The axle 34 of the roller is supported by a cross-beam 38 which cam be raised and lowered by a pinion 40, and the guide-plates are spring-suspended from independent standards. Both rollers and guide-plates may be adjusted laterally to suit the width of the sheet. After leaving the bath, the sheet passes over a rotary brush, which returns surplus metal, and a wiper, and then passes between scouring-brushes in a bath of potassium cyanide. The sheet further passes between spraying-pipes and steam-heated rolls and coils and finally emerges through circular knives which remove the uncoated edges. Adjustable guideways at the sides of the machine direct the front edge of the sheet to the various feed-rolls. Specification 112,125 is referred to.
Patent GB-797679-A (GB)
Title: Improvements in or relating to devices for injecting or jetting gasses into liquids such as carbon dioxide into beer
Inventor: BISHOP LAURENCE ROBERT
IPC: B67C3/22
Filed: 1955-05-10
Abstract: 797,679. Bottling. WATNEY COMBE REID & CO., Ltd. July 24, 1956 [May 10, 1955], No. 13562/55. Class 125(2). A method of filling and closing a liquid holding container includes injecting a gas into the liquid in said container prior to capping and sealing wherein the liquid is mechanically agitated in the gas-injection zone to produce a close-knit formation of small bubbles distributed over a relatively large area. A device can be attached to the already known gas-injecting machines (broken lines) operating on a turntable so that when the nozzle 26 is dipped into the liquid the agitator 30 is set in vibration by an electric motor 28. The injection device 4, is operated by a cam 6 which is fixed, and as the machine rotates the injection device is pressed down. The agitating device is simultaneously set in motion by the cam completing an electric circuit by means of contacts 33, 19. The agitator may alternatively set the nozzle of the jet vibrating, for which arrangement a flexible nozzle is provided. According to the Provisional Specification the nozzle may be oscillated mechanically or by compressed air.
Patent GB-514729-A (GB)
Title: Improvements in and relating to thermionic valve amplifiers
IPC: H03F1/36
Filed: 1938-05-06
Abstract: 514,729. Valve amplifying circuits. MAYO, C. G., ELLIS, H. D. M., and TANNER, R. H. May 6, 1938, No. 13636. [Class 40 (v)] [Also in Group XXXV] In an amplifier having a negative feedback path comprising an interleaved section-wound transformer with a primary winding in at least two sections, the transformer has associated with it one or more additional or stray reactances so as to make the transformer performance substantially that of a transformer with single primary and secondary sections. In this way, stable feedback is obtained since an increase in attenuation round the feedback loop is obtained for a given phase shift. The additional reactances may be capacities such as to ensure that the voltage distribution over the primary sections is substantially the same at high as at low frequencies. The capacities may be constituted by screens embodied in the transformer. Alternatively a tertiary winding may provide the feedback voltage or a part thereof and be so constituted and arranged as to have a linkage of leakage flux proportional to the effective primary flux linkage.
Patent GB-1026003-A (GB)
Title: Fluid compositions
Inventor: CLAY WILLIAM MAXWELL
IPC: D06M23/06
Filed: 1964-04-02
Abstract: Cleansing compositions comprise isopropanol and 1,1,2-trichloro-1,2,2-trifluoro ethane.  Preferred is an azeotropic mixture of the two in the approximate weight ratio 3:97.  A surfactant may also be present, e.g. cetyl pyridinium bromide or didodecyl-dimethyl ammonium chloride. The composition may be used in aerosol form with a liquified gas propellant.ALSO:Either isopropanol or 1, 1, 2-trichloro-1, 2, 2-trifluoroethane may be removed from a system containing it by adding whichever of the two is not present and then removing an azeotropic mixture of the two from the system by distillation.
Patent GB-700527-A (GB)
Title: Improvements in flexible saddle suspensions for cycles
IPC: B62J1/06
Filed: 1951-06-08
Abstract: 700,527. Cycle saddle mounting. HAVET, A. L. June 8, 1951 [June 12, 1950; June 22, 1950], No. 13687/51. Class 136(3) A flexible cycle saddle suspension comprises a pair of telescopic spring-extended tubular members, one of the tubular members being connected or integral with the saddle and the other attached to the frame of the cycle, e.g. through a bracket or stay, the arrangement being such that the tubular members are adjustable as a unit by translational movement while remaining in substantially vertical position to adjust the suspension towards or away from the cycle handle-bars. The saddle a is supported by two male tubes c slidable within female tubes h, each pair of tubes being extended by a spring e adjustably tensioned by a screw n. The tubes h are joined by a bracket q through which is passed a bolt r which is slidable within a slotted bracket t formed on the saddle tube of the cycle (not shown). The head of bolt r rests on the top of bracket t so that the tubes hare locked at a desired distance from the cycle handlebars by tightening a nut s on the bolt. A set-screw g in each tube h works in a slot in the corresponding tube c to limit relative movement of each pair of tubes. Alternatively co-operating shoulders may be provided on the inner and outer tubes respectively. Oil retaining channels d are formed in each tube h.
Patent GB-717203-A (GB)
Title: An improved device and process for rolling metal and other materials
IPC: B21B1/42
Filed: 1952-05-29
Abstract: 717,203. Rolling machines. PLATZER, F. May 29, 1952 [June 8, 1951], No. 13703/52. Class 87 (2) [Also in Group XXII] In a method of rolling sheets, rods, profiled material, tubes, &c. pairs of rolls are pulled along the material and are backed by intermediate rolls guided along stationary tracks having converging parallel and diverging portions. In one example for rolling sheet material 1, Fig. 2, rolls 2, 3 supported in carriers 9, 10 on a slide 11 are reciprocated over the work and are supported by backing rolls 5, 6 running on stationary tracks 7, 8. The carriers 9, 10 are vertically slidable in the slide 11 and are yieldingly engaged by springs 12 which hold the rolls 5, 6 in continuous engagement with the tracks 7. The tracks are interchangeable and are adjustable in position as by packing 15. The work is fed step-by-step during the periods in which the rolls 2, 3 are disengaged. In another example rolls 16, 17, Fig. 3, are supported on continuous chains which pass over formers 21, 22 having converging tracks 19, 20. The rolls 16, 17 are mounted in carriers 27, 28 interconnected by links 31 and carrying rollers 25, 26 in engagement with the rolls 16, 17 and running on the formers 21, 22. The work 1 is continuously or intermittently fed by rolls 29, 30. Parts of the tracks of the formers 21, 22 may have hardened steel inserts 23, 24 and those parts 19, 20 which are not loaded during rolling are made of sheet metal 19<1>, 20<1>. In a modification not shown the formers are elliptical and the carriers 27, 28 each have a pair of rollers supporting the rolls 16, 17.
Patent GB-175566-A (GB)
Title: An improved combination culinary utensil
IPC: A47J27/05
Filed: 1921-05-17
Abstract: 175,566. Beeston, E. E., and Beeston, G. N. May 17, 1921. Heating and cooking vessels.-A combined boiling, steaming, or straining tensil comprises an outer water-containing vessel A, provided with a cover F and with a gauze-protected drainage tube C near the bottom, adanted to accommodate inner vessels E, E<1>, which may be of perforated metal, or small-mesh wire. Either inner vessel can rest by means of the feet L or L<1> on the bottom of the vessel A; the Figure shows the vessel E<1> so situated. On the lower inner surface of the vessel A are arranged three pairs of guides or ridges H having at their upper ends metal ledges J suitably disposed for the feet L of the upper inner vessel to rest upon. Both inner vessels are furnished with upwardly-projecting handles N, N', which pass through slots in the cover F; by this means a single inner vessel, say the vessel E<1>, can be lifted out of the water from the position shown and after a partial rotation be caused to rest with its feet upon the ledges J, thus permitting straining &c. of the contents to be effected without removing the cover of the vessel A.
Patent GB-1222432-A (GB)
Title: Delivery device for a bag-making machine
IPC: B65H29/06
Filed: 1968-03-21
Abstract: 1,222,432. Bag-delivering machine. WINDMOLLER & HOLSCHER. 21 March, 1968 [6 April, 1967], No. 13732/68. Heading B5D. [Also in Division B8] In a paper or plastics materials bag delivery device the bags, from a bag-making machine, are collected and superimposed into sets of two or more bags by a gripper roll 8, which sets are decelerated on braking strips 27a-27c and conveyed to a delivery cylinder 35 provided with grippers 34 which deposits said bags in a vertical position on a delivery table 37 and combines them into a stack. Bags are fed in succession to the delivery device by conveyers 2, 4. The gripper roll 8 picks up the first bag by means of grippers 9, performs one revolution (the bag being held to the surface of the cylinder by belts 25) and then deposits this bag on top of the next succeeding bag. This set of two bags is then conveyed by conveyers 4 to braking pads 27a-27c which decelerate the set of bags to a suitable velocity. The ends of the bags abut against stop fingers 36 which control the set of bags prior to collection by the delivery cylinder 35. Sets of more than two bags can be formed if the set of grippers 9 are controlled to grip the initially formed set of two bags and to deposit this set on the next succeeding bag and so on until the desired number of bags is collected in the set.
Patent GB-645771-A (GB)
Title: Improvements in or relating to snap-action electric switches
Inventor: OSBORN FRANK THOMAS
IPC: H01H15/10
Filed: 1948-05-20
Abstract: 645,771. Snap-action switches. BRITISH MECHANICAL PRODUCTIONS, Ltd. May 20, 1948, No. 13734. [Class 38(v)] A dead-centre, snap-action switch comprises a toggle having one link held in tension by a spring or constituted by a tension spring, and the other link held in compression. The tension link 14 is pivoted to a cross bar 12 slidable with a cross-shaped operating member 25 and is surrounded by a spring 15 compressed between the base and a washer 16 on the end of the link. The compression link comprises two pairs of links 9, 10, each pair carrying a movable roller contact 8, which co-operates with three fixed contacts 4a, 4b, 4c. When the member 25 is operated, the spring is further compressed until the links move over-centre, when the spring expands and moves the contacts out of bridging engagement with contacts 4a, 4b and into bridging engagement with contacts 4b, 4c. In a modification (not shown), the rollers normally engage one fixed contact and are moved overcentre into bridging engagement with that and a further fixed contact, as described in Specification 577,126. The fixed contacts are preferably of brass, and all of the contacts may be silver-plated. The central ridge 2 of the base may be notched apposite the contact gaps, and the link 14 may be of insulating material, so as to increase the insulating surface between the contacts.
Patent GB-1038267-A (GB)
Title: Chip cutter
Inventor: HUBBARD TERENCE PHILLIP
IPC: B26D1/38
Filed: 1964-04-02
Abstract: 1,038,267. Comminuting sheet material. IMPERIAL CHEMICAL INDUSTRIES Ltd. March 18, 1965 [April 2, 1964], No. 13738/64. Heading B5A. Non-thermally softened sheet material is comminuted by first cutting it longitudinally into strips in such a manner that the strips remain attached to each other over a proportion of their length, and then cross-cutting the strips to form particles. Cutting discs 6 mounted on a shaft 7 mesh with discs 8 mounted on a shaft 9, each disc 8 having evenly spaced notches around its upper and lower periphery. The sheet material is fed between the two sets of discs which rotate in opposite directions, whereby longitudinal cuts are produced in the sheet, there being a series of uncut portions along the line of each cut where the notches contact the sheet material. The strips so formed are then cross-cut to form particles. The material may be polymeric, such as polyesters, e.g. polyethylene terephthalate, polyolefins, polyamides and polyvinyl chloride.
Patent GB-1343373-A (GB)
Title: Dies
IPC: B29C48/05
Filed: 1972-03-23
Abstract: 1343373 Extrusion coating die DART INDUSTRIES Inc 23 March 1972 [25 March 1971] 13761/72 Heading B5A In an extrusion die comprising a die body 3 through which extends a passage 5 having a first converging section 7, a straight section 9, a second converging section 8 and a final shaping section from which the extrudate P emerges, filaments F are drawn through the guide passage 14 of a core 2 and are impregnated with resin entering passage 14 through sets of holes 17 and 18, and are coated with more resin where they emerge from the tapered portion 16 of the core in the second converging passage section 9. The core 2 is bolted to the die body 3 through an end portion 12 and is relatively adjusted by changing shims fitted between shoulder 19 and seat 20 of the die body. The core 2 and die body 3 are separately heated by electrical heaters H2, H1 and the emerging extrudate is severed into granules.
Patent GB-1486670-A (GB)
Title: Tyre press unloader
IPC: B29C35/00
Filed: 1975-04-03
Abstract: 1486670 Moulding tyres NRM CORP 3 April 1975 [24 Dec 1974] 13762/75 Heading B5A A tyre unloader for a tyre press comprises a platform 98 and an elevator stanchion assembly 82, 66 which pivotally supports the platform and which is pivotally mounted at the base of the press for swinging the platform into the press, when open, beneath the cured tyre to provide a firm support therefor. When used with a two-part mould 14, 15 with a bladder 45 clamped to bead ring assemblies 46, 47 the platform is positioned horizontally beneath the cured tyre on firm supports after the mould is opened and the tyre elevated by the bladder mechanism. The bladder is stripped from the tyre which is received by the platform which is then tilted causing the tyre to engage a tyre stop roller. The platform is then retracted and lowered, during which it is turned to a horizontal position, whereupon the stanchion assembly is pivoted to an inclined position and the stop roller lowered to allow tyre discharge. The stanchion assembly is pivotally mounted on shafts 62, Figs. 2, 8, and includes an inverted U-shaped stanchion swung between vertical and inclined positions by cylinder 73. An elevator 82 is raised by a cylinder 79 and guided by rods 87 sliding in bushings. Side plates 92, 93 of the elevator pivotally support a cylinder 95 which tilts the platform about a shaft 97. The platform has a main frame 100 on which a frame 114, Figs. 3A, 3B, slides and which is reciprocable by a cylinder 107 attached to a bracket 103 on the elevator. The slide frame 114 includes, at each side, tyre supporting rollers 127, 128, 130 and a vertically movable tyre stop roller 129; it also includes laterally adjustable roller assemblies 147, 148 at each side. When the platform is horizontal and expanded a cross member of the slide frame engages the top of a fixed post 161, Fig. 2, on the base plate 12, and a stop 163 on the elevator engages the base plate to thereby provide firm support when the bladder is being stripped from the tyre. Cam rollers 165, 166, Fig. 8, on each side of the platform engage cam plates 170, 171 when the platform is lowered causing it to swivel counter clockwise to horizontal position. In the modification of Fig. 5 an inverted U-shaped stanchion 185 supports a platform, not shown and on each side is connected to a linkage 186, 187, 192 which, when the stanchion is moved between vertical and inclined positions rotates, on each side, a column 199 to which a support 201 is attached whereby, when the press is opened, the supports are swung into a position to receive the platform side frames.