baber/WOPTO huggingface dataset:
Patent GB-852643-A (GB)
Title: Timing mechanism for electric switches
IPC: G04F3/06
Filed: 1957-09-16
Abstract: 852,643. Time switches. CHUCHLA, J. K. Sept. 15, 1958 [Sept. 16, 1957], No. 29113/57. Class 38 (5). [Also in Group XXIV] A time switch mechanism comprises an elongated member movable between first and second rest positions to actuate a two-position switch, a trip member movable longitudinally of and parallel to the switch operating member at constant speed to engage trip pins secured to the switch operating member, the trip member being free to pivot and thus pass a trip pin after having engaged the same to leave the operating member in the position to which it is moved by such engagement. In one form, three bars 11, 12, 13 are rockable about their longitudinal axes and are connected by toggle springs 16, 17, 18 to contact sets 19, 20, 21. Each bar carries two sets of trip pins 29, one set having cam surfaces 31 to the left of the bar and the other set having the surfaces 31 to the right of the bar. A trip member 27 is movable vertically along the bars to engage the pins 29 in succession, engagement of a pin of one set rocking a bar in one direction, and of the other set in the other direction, thereby operating the switch with a snap-action between its two positions. The member 27 is attached to two tapes 46 which are wound on spools 45. The latter are carried by a spindle 42 carrying a clutch member 37 which is normally separated from a clutch member 36 by means of a spring 44 which pushes a bar 43 to the right and thereby tilts a lever 40 carrying the spindle 42 clockwise. The member 36 is driven by a motor 32 via gears 33, 34, 35, and the clutch members are engaged by energizing a solenoid 38 which moves the lever 40 counter-clockwise. The bar 43, when urged to the right by spring 44, holds the contacts in one position. The solenoid 38 may be automatically de-energized at the end of the movement of member 27 which is thereupon returned to its lower position by a spring 52, the member 27 having a part 28 pivoted thereto so that the bars 11, 12, 13 are not actuated during the return movement. The solenoid may be so connected that it is automatically re-energized when the member 27 has returned so that the cycle of operations is repeated indefinitely (Fig. 5, not shown). Alternatively, the motor may be switched off at the end of the upward movement, the solenoid remaining energized until its circuit is opened by a separate switch. In a modification, Fig. 4, the trip member 27a is raised by a lead screw 36a, being clutched thereto when two half nuts 52a, 53 are forced inwards by rotation of members 25a, 26a by the solenoid. In a further modification, Fig. 6, each switch is operated by two bars 70, 71 connected by pivoted links 65, 65, the link 64 being connected to the switch by a toggle spring 82. The trip member 74 engages the trip pins 72 to alternately raise and lower the bars 70, 71.
Patent GB-269608-A (GB)
Title: Improvements in or relating to railway signal systems
IPC: B61L23/12
Filed: 1925-11-18
Abstract: 269,608. Automatic Telephone Manufacturing Co., Ltd., Hudd, A. E., and Tattersall, A. E. Nov. 18, 1925. Combined electrical and mechanical systems, non-automatic.-In a block signalling system employing track circuits the track is momentarily tested at the time a "line clear" signal is given, and again when attempt is made to lower the signal, the tests being applied respectively by the signalmen at the ends of the section. The section has insulated rails 1. 2 bridged by a track relay 18 at the entrance end, at which the signal 5 is situated. The diagram shows the arrangements A, B at the cabins, each having a signalling instrument 6, 22 of usual type. After the usual bell signals, the signalman at A moves his handle 7 to the right, to "line clear" position, thus connecting the negative battery 25 through instrument 6, polarized relay 9, wire 23, resistance 12, polarized relay 14, back contact 17 and armature 15 of relay 14, and instrument 22. Inclusion of armature 15 causes the armature to chatter and the current to be intermittent, so that instruments 6, 22, and relays 9, 14 are not effectively operated. Handle 7, however, in its extreme position, closes contacts 8 connecting a track battery 26 to the rails 1, 2 so that if the section be clear, relay 18 is energized, and its armature 19 shunts contact 17, whereupon the circuit traced above is continuously energized, the instruments 6, 22 indicating "line clear," and the armature 15 engages its front contact 16 so that the indications are maintained when armature 19 falls on release of handle 7. Owing to resistance 12, the current flowing is insufficient to operate relay 9. When the signalman at B attempts to pull off the signal 5, contacts 13 are first closed, by plunger, catchhandle, or otherwise. Resistance 12 is thus short-circuited, and relay 9 operated, its armature 10 serving again to connect track battery 26 to rails 1, 2, so that if the section be still clear, relay 18 is again energized, its armature 19 closing idly, and a second armature 20 closing the circuit of the lever-lock 21, releasing the signal lever. When handle 7 is moved to the left to signal "train on line," positive battery 24 is connected up, and the reversed current restores the armatures of relays 9, 14 to the position shown. When the handle 7 is restored to the position shown, current flow ceases, and the instruments return to "line blocked" indication. Resistance 12 may be omitted and contacts 13 arranged to shunt relay 14, and a non-polarized relay responding to increased current may replace relay 9.
Patent GB-483502-A (GB)
Title: Improvements in or relating to nasal or oro-nasal appliances for the administration of gas
IPC: A61M16/06
Filed: 1936-10-27
Abstract: 483,502. Anµsthetic apparatus. HOPE, W. Oct. 27, 1936, No. 29186. [Class 81 (ii)] An anµsthetic nose, mouth, or face piece 10 carrying a gas-control device comprising a ported housing 11 for a ported rotatable plug 13, the housing and plug respectively carrying spring-pressed exhaling and inhaling disc valves 19, 26, is characterized in that the spring loading of the exhaling valve is rendered adjustable, as by providing a hollow screw 21 which bears on the valve spring 20 and receives the valve spindle 31. The housing 11 is connected to the nose-piece 10 by a hollow screw 12 and has, in addition to the exhaling port 18, an inlet port 24 communicating with a tangential tube 14 the two limbs of which are connected by flexible tubing with the gas supply. The plug 13 has three ports, including the valvecontrolled port 25, arranged at intervals of 90‹ therearound; this arrangement permitting four settings of the plug in which respectively (1) air is inhaled through valve 26 and exhaled through valve 19 ; (2) air is inhaled through an uncontrolled port, and partly rebreathed therethrough and partly exhaled through valve 19 ; (3) air is inhaled and completely rebreathed through an uncontrolled port, valve 19 being cut off ; and (4) valves 26, 19 register with one another ; in the last setting all gas supply ports, and the exhaling port, are closed but an air-inlet slot 34 in plug 13 registers with a slot in housing 11. The plug is rotatably held in the housing by a screw engaging a peripheral groove 40, and is rotated by a radial arm 35 which extends rearwardly over the housing and carries a spring-pressed stud engaging depressions therein corresponding to the valve settings.
Patent GB-478902-A (GB)
Title: A process for the preparation of a condensation product of iodoform and guaiacol
IPC: C07C37/00
Filed: 1936-10-27
Abstract: Guaiacol is heated with iodoform, preferably in the proportions of 1,2 : 1 by weight, and the bye-products and unchanged starting materials removed by distillation or extraction with solvents.  The product, which possesses therapeutic properties, may be purified by treatment with aqueous solutions of weak alkalies, preferably alkali carbonates and bicarbonates and in order of increasing alkalinity, and further purified by extraction with aqueous alkali bisulphite. According to the examples: (1) guaiacol and iodoform in the proportions by weight of 2,5 : 1 are heated together for some days at 105 DEG  C. until no more methyl iodide is evolved and then distilled in vacuo; (2) guaiacol and iodoform in the proportions by weight of 1,2 : 1 are condensed as in (1) and the mass subjected to distillation in vacuo, steam distillation or solvent extraction; (3) the product of (1) or (2), if desired after dissolution in acetone, is heated with sodium carbonate solution with exclusion of air and acid then added to precipitate the purified compound ; alternatively, the starting material is extracted at ordinary temperature first with sodium bicarbonate solution and then with sodium carbonate solution and the solutions acidified, or the starting material is extracted in a nitrogen atmosphere with caustic soda solution and carbon dioxide then passed into the filtrate to separate the purified compound; (4) the product of (3) is twice extracted with sodium bisulphite solution and the precipitate formed on acidification extracted with ethyl acetate.  The Specification as open to inspection under Sect. 91 also contains examples which describe the interaction by prolonged heat treatment of iodoform and guaiacol in the proportions by weight of 1 : 5 and 1 : 1 respectively.  A further example is given according to which the reaction mixture of iodoform and guaiacol in the proportions by weight of 1 : 1,2, after prlonged heating is stirred into hot toluene, when a resinous product separates out.  This subject-matter does not appear in the Specification as accepted.
Patent GB-299872-A (GB)
Title: Improvements in bearings
IPC: F16C9/04
Filed: 1928-10-11
Abstract: 299,872. Hirth Akt.-Ges., A., and Weis, R. Nov. 3, 1927, [Convention date]. Connecting-rods. - The adjacent faces of the halves a, b, of a connect. ing-rod big end are serrated, the serrations e radiating from a point on the axis of the bearing.
Patent GB-1432006-A (GB)
Title: Ion production
IPC: B05B5/16
Filed: 1973-06-20
Abstract: 1432006 Spray-producers SCIENTIFIC ENTERPRISES INC 20 June 1973 [27 June 1972] 29276/73 Heading B2F [Also in Divisions F1, H1 and H3] Particles of paint or powder used to coat surfaces are electrically charged by inserting a tube 71 leading from a container 72 for the paint or powder into the nozzle-head 34 of an ion generator (see Division H1) which generates a stream of ions pulsed at ultrasonic frequency by a cavity resonator.
Patent GB-191523-A (GB)
Title: Improvements in or relating to inkwells
IPC: B43L25/00
Filed: 1921-11-03
Abstract: 191,523. Bachrach, J. Nov. 3, 1921. Inkstands.-An ink-well is provided with a cover having an opening in which one or more counterbalanced closure members are removably mounted, the cover and closure-members being provided with coacting means to prevent accidental disconnection. The body 5 of the ink-well ie provided with a chamber 6 and with flanges 7, 7<1> between which is mounted a covermember 8 provided with an opening 9 formed at the ends with rabbeted edges 10. The opposite sides of the opening are formed with bevelled surfaces 12 to act as guides for the pen-nib and to provide recesses 15. Vertical grooves 16 enter these recesses at each end, the grooves being also connected with the rabbeted edges of the opening, and at the junction, pivot faces 17 are formed for the reception of pivots 24 on the closure-members 19, which are arranged to lie flush with the upper surface of the cover 8. The members 19 comprise body portions 20 formed with flanges 21 to seat on the rabbeted edges 10 and a rearwardly inclined lip 22 provided with extending side lugs 27 and a convex face 26 at the lower end. For assembly, the lugs 27 are passed down the slots 16 until the faces. 17, 24 engage, when the lugs extend below the lower ends of the slots. When released the members assume the position shown on the left of Fig. 1 owing to the weight of the body portions 20, the lugs 27 entering the recesses 15 to prevent accidental disconnection of the parts. When in use, the pen-nib is directed by the parts 12, 22 between the contacting surfaces 26 of the closure-members and the pressure on the surfaces causes the members to open, the parts automatically returning into normal closed positions when the pen is withdrawn.
Patent GB-324009-A (GB)
Title: An improved metal alloy
Filed: 1928-10-11
Abstract: 324,009. Henbrey, H. J., and Thornhill, C. J. M. Oct. 11, 1928. Alloys.-An alloy comprises 20-75 per cent ot iron, 5-20 per cent of chromium, 5-20 per cent of copper, 10-50 per cent of nickel, and up to 10 per cent of silver, with or without up to 2 per cent of manganese. The carbon content may be 0.12-0.45 per cent, the alloys with the higher carbon ranges requiring annealing.
Patent GB-943076-A (GB)
Title: Hydraulic actuator
Inventor: BURLEY BILLY
IPC: F15B15/18
Filed: 1962-07-31
Abstract: 943,076. Fluid pressure servomotor control systems. JOHNSON SERVICE CO. July 31, 1962, No. 29311/62. Heading G3P. [Also in Division F1] An hydraulic actuator for longitudinally positioning a shaft 62 to a predetermined position comprises first and second variable volume fluid chambers 20,26 defined by flexible bag members 18, 24 respectively, the combined volume of the chambers remaining constant and being filled with hydraulic fluid, and pump means 32 in the first chamber which takes in fluid from the first chamber and discharges it into the second chamber to expand the bag 24 and contract the bag 18 around the pump. The bags are secured in housings 12,14 and the bag 24 adapted to move an actuating piston and shaft 52, 62 against the action of a spring 54. A constant volume of fluid is pumped into the chamber 26 through a flexible pipe 34 and returned to the chamber 20 through a port 38, which is provided with a filter 40, and a selectively variable flow restrictor 42 which opposes the fluid flow to create a back pressure in the chamber 26 to operate the shaft 62. The restrictor 42 is in the form of a solenoid 46 which attracts an armature flap 48 towards its outlet 50, the magnetic force being controlled by a rheostat 76 as shown in Fig. 5. When the rheostat is adjusted to a particular setting calibrated to a given position of the shaft 62, the flap moves to restrict the fluid flow through the restrictor and create the corresponding back pressure in the chamber 26. As shown in Fig. 5, a self regulating device may be provided between the pump 32 and chamber 26 comprising a reservoir 80 and an orifice 82 having a smaller flow area than the port 38. In the event of power failure to the pump or flow restrictor,the spring 54 returns the bag 24 to the collapsed position as shown in Fig. 1.
Patent GB-498707-A (GB)
Title: Improvements in and relating to the production of glass threads
IPC: C03B37/081
Filed: 1937-10-27
Abstract: 498,707. Making glass threads. GOSSLER GLASGESPINST-FABRIK GES., O. Oct. 27, 1937, No. 29366. Convention date, Nov: 21, 1936. [Class 56] A method of producing glass threads consists in using a shaft furnace which rotates about its vertical axis and has its base provided with outlet nozzles or apertures arranged in circles concentric with the axis, the heating gases being introduced into the furnace in the direction of the axis so that the nozzles lie in zones of approximately equal temperature. The furnace comprises a chamber 13, Fig. 4, fitted with a vertical shaft-like extension 17 having a top opening 16 through which the flame from a burner 1 enters. The bottom of the chamber 13 may be flat or it may be dished, as shown, to serve as a deflector for the flame. Alternatively, the deflector may be shaped as shown at 12, Fig. 3. The purpose of the deflector is to cover the core of the flame, which is at a lower temperature, to ensure that the outlet nozzles 4 all lie in zones where the flames are of approximately equal temperature. The glass is melted in one or more compartments 21, charged through openings 26, whence the glass flows over ledges 24 through openings 23 into the chamber 13. The hot gases escape from the chamber 13 through the openings 26, so that the glass is melted by, and exposed to, a countercurrent of hot gas. The glass threads G, drawn from the nozzles 4, are wound on a spinning-drum 30. The furnace is rotated about the axis III-III of the part 17 at a speed which is sufficient to distribute the threads uniformly on the drum but is not sufficiently rapid to cause stranding of the threads. The drum or the furnace may also be moved laterally to assist in distributing the threads.
Patent GB-648252-A (GB)
Title: Water-soluble polyacrylamides and poly alpha-substituted acrylamides
IPC: C08F20/54
Filed: 1946-10-02
Abstract: Water-soluble polymers of amides of the acrylic acid series are produced by polymerizing the monomers under the action of ultra-violet light or other polymerization catalysts in solution in a lower aliphatic alcohol, e.g. methyl, ethyl, propyl, isopropyl, or in dioxane, chloroform or dimethyl formamide. Listed amides include both a -substituted and unsubstituted amides, e.g. methyl, propyl, isopropyl, butyl, amyl, phenyl, methyl phenyl, cyclohexyl, methyl cyclohexyl, benzyl and chloro- and bromo-a -substituted acrylamides and N-alkylol acrylamides and their a -substitution products, e.g. N-ethanol methacrylamide.  The polymers have a Zsigmondy gold number (a measure of their protective colloid action) of less than 10-3 and inhibit sedimentation in aqueous dispersions of water-insoluble materials, being particularly useful as additives to aqueous dispersions of silver halides, including silver halide dispersions containing gelatine (see Group XX).  Preferably polymerization is carried out at room temperature or below in the absence of oxygen-yielding catalysts.  Monomers containing alcohol groups in their molecules, e.g. N-ethanolacrylamide and N-ethanol methacrylamide, may be polymerized without a solvent to give water-soluble polymers provided polymerization is interrupted before complete conversion, although the use of the solvents is preferred. The polymers may be precipitated from aqueous solution by acetone. In addition to use in photographic emulsions (see Group XX), they may be used for temporary sizing and finishing. Specifications 304,681, [Class 2 (iii)], 648,251 and U.S.A. Specification 2,311,548 are referred to.
Patent GB-629454-A (GB)
Title: Improvements in gear type pumps
IPC: B21D26/02
Filed: 1947-11-04
Abstract: 629,454. Lapping. TRIGGS, W. W. (Food Machinery Corporation). Nov. 4, 1947, No. 29419. [Class 60] [Also in Groups XXII, XXIV and XXVI] A helical piston rotor 30, for a meshing- screw pump, is lapped by the movement of the rotor in a nut 130, which reciprocates longitudinally between stops 125. When an arm 131 hits a stop 125 the driving motor 111 is reversed.
Patent GB-1518823-A (GB)
Title: Method and arrangement for checking the wrapping of rod-like articles of the tobacco-processing industry
IPC: A24C5/34
Filed: 1975-07-15
Abstract: 1518823 Testing cigarettes HAUNI-WERKE KORBER & CO KG 15 July 1975 [19 July 1974] 29564/75 Heading A2C The wrappings of cigarettes are checked by forming a signal corresponding to the permeability to air of the wrapping material, forming a second signal dependent on the porosity of the wrapper and using these two signals to form a third signal which corresponds to the air permeability freed from fluctuations in the porosity in the wrapping. The second signal is formed from the mean of the first signals excluding those produced by faulty wrappers. As shown a pneumatic checking device 1 generates the first signal which is passed to a differential amplifier 13 where it is compared with the second signal generated by a controllable signal generator 21. If the two signals differ a third signal is transmitted to a store 14 and a comparison member 31. If the comparison member discovers that the third signal falls below a reference value the cigarette in question is expelled. Also, through the action of an inverter gate 43 and an AND-gate 42 the store 14 remains inactive. If the third signal is above the reference value the store 14 is activated and the signal thus contributes towards the mean value determined by a device 18 which in turn controls the output of the signal generator 21.
Patent GB-370379-A (GB)
Title: Process for the manufacture of asphalt having a high melting point
IPC: C10C3/08
Filed: 1930-10-03
Abstract: In the manufacture of asphalt with a melting-point above 40 DEG  C the raw material, such as petroleum distillation residues, primary tar, bitumen, natural wax, &c. is heated to a temperature of 360-430 DEG  C. at or near atmospheric pressure, and the gases evolved are collected.  The product may be treated further by heat, under pressure or in the presence of water vapour.  The retort may be provided with a reflux apparatus to prevent light asphalt from escaping with the vapours; and it may be associated directly or indirectly with a cracking plant.  Metallic salts or oxides may be added to the charge.ALSO:In the manufacture of asphalt with a melting-point above 40 DEG  C., the raw material, such as petroleum distillation residues, primary tar, bitumen, natural wax, &c., is heated to a temperature of 360-430 DEG  C. at or near atmospheric pressure, and the gases evolved are collected.  The product may be treated further by heat, under pressure or in the presence of water vapour.  The retort may be provided with a reflux apparatus to prevent light asphalt from escaping with the vapours; and it may be associated directly or indirectly with a cracking plant.  Metallic salts or oxides may be added to the charge.
Patent GB-519284-A (GB)
Title: Improvements in or relating to fastening means for kinematograph film spool storage cabinets
IPC: G03B21/32
Filed: 1938-10-13
Abstract: 519,284. Fastenings for spool cabinets. RIGBY, Ltd., and SEAGER, E. C. Oct: 13, 1938, No. 29671. [Class 44] [Also in Groups XIV and XVII] In a camera-spool cabinet having a number of compartments each provided with a door, the fastening means are arranged so that no door, except the first in the series, can be opened unless the preceding door is open. The cabinet shown has doors hinged along the lower horizontal edge as in Specification 417,235, [Class XIV]. Each door 1 has an open-bottomed pocket 3 in which the spool rests. Outward movement of the doors is limited by a rod 12 engaged by the rear lip 3b of the pocket. Each fastening comprises a hook 5b pivoted at 5a and biassed to engagement with a projection 4 on the cabinet by spring 6. The tail 5 of the hook projects into the preceding compartment so as to be engaged by a projection 3a on the pocket in that compartment when the door is thrown open, the engagement releasing the hook. Each pocket has a pivoted member, not shown, which depends as a foot preventing the door from being fully closed unless the pocket contains a spool, which bears against and raises the pivoted member clear of the floor of the cabinet.