baber/WOPTO huggingface dataset:
Patent GB-1368894-A (GB)
Title: Cast steel railway track frogs
IPC: E01B7/14
Filed: 1972-06-19
Abstract: 1368894 Railway track crossings ACIERIES DE PARIS & D OUTREAU 19 June 1972 [21 June 1971] 28560/72 Heading E1G In a cast steel railway crossing frog wherein convergent upstream rails 11, 12 cooperate with a movably-mounted point 2 which can swing into engagement with divergent downstream rails 14 or 15, the heel 4, 5 of the movable point 2 is forked to embrace a fixed triangular boss 3 and is retained by a horizontal key 6 having a part-spherical central bearing portion 7 on which the point 2 can swing. The nose of the point is provided with a horizontal shifting bar (not shown) which passes through apertures 16, 17 in the rails 14, 15 and may be actuated by worm gearing. The point 2 seats on bearing plates 13 and has its forked heel bevelled at 9, 10 to coact with the bevelled ends of the upstream rails 11, 12. (For Figures see next page)
Patent GB-1445269-A (GB)
Title: Emthod of fabrication of a ceramic nuclear fuel element
IPC: G21C21/02
Filed: 1974-06-27
Abstract: 1445269 Nuclear fuel elements COMMISSARIAT A L'ENERGIE ATOMIQUE 27 June 1974 [6 July 1973 3 April 1974] 28566/74 Heading G6C A nuclear fuel element comprises a juxtaposed array of wafers of ceramic fuel material enclosed between two metallic cladding plates, some at least of the wafers being provided with individual metallic protection. Such protection may be a foil wrapping 5, Fig. 1, the wafers being held in a surrounding metal frame 4. Metallic partition strips may be utilized, Figs. 2, 4 (neither shown). In a method of fabrication each wafer, of sintered UO 2 , is covered with a graphite layer (an anti-diffusion barrier) and wrapped in a sheet of ductile zirconium foil; the wrapped wafers are then assembled in rows on a plate of zircaloy, a zirconium frame 4 is formed, a zircaloy cover-plate is added, and the cladding plates and frame are welded in vacuo so as to close the fuel element. Finally a diffusion bonding operation at 830‹ C. in helium under a pressure of 1000 bars is effected. In another embodiment U-shaped members are spot-welded together to act as frame 4, Figs. 5, 6 (neither shown). In an alternative form the fuel element consists of a single row of wafers, Figs. 7, 8 (neither shown).
Patent GB-1088349-A (GB)
Title: Electromagnetic stepping switch
Inventor: AKSU AKIN
IPC: H01H3/28
Filed: 1966-06-25
Abstract: 1,088,349. Electromagnetic switches. AMP Inc. June 25, 1966, No. 28578/66. Heading H2B. [Also in Division H1] A rotary stepped switch has a contact arm 66 rotated one step each time an electromagnet 52 is energized, but which is only moved into engagement with one of the fixed contacts 64 when a coil 270 is energized. A sleeve 238 attached to the spring biased armature 224 of electromagnet 52 has a pin 260 in a vertical slot 260 in a bushing 264 carrying the contact arm 66. When the coil 190 is energized the armature 224 and an armature 240 move up together with engaging teeth 246, 250 as in Fig. 3 and camming slots 256 engaging fixed pins 258 cause rotation of the armatures and contact are by one contact space. On de-energization a light spring 254 separates the two armatures 224 and 240 so that the armature 224 and contact arm are not rotated during the return movement. When coil 270 is energized to close selected contacts, bushing 264 moves down with attached armature 276 which has a sleeve 292 with flanges 293 retained by spring arms 320 after de-energization of the coil 270. When the coil 270 is reenergized an armature 302 moves down so that a bevel ended sleeve 298 attached thereto moves the springs 320 outward to release flange 293. Upon de-energization of the coil 270 a spring 280 moves the armature 276 and contact arm 66 to the disengaged position.
Patent GB-976960-A (GB)
Title: Electrical comparator
Inventor: PRICE JOHN CLIFFORD
IPC: H04B14/04
Filed: 1963-07-19
Abstract: 976,960. Analogue-to-digital converters. STANDARD TELEPHONES & CABLES Ltd. July 19,1963, No. 28627/63. Heading G4H. [Also in Division H4] In an analogue-to-digital converter adapted to convert a succession of values the comparator delivers a signal indicating the sense of the difference between the input value and the balance signal and there are means made effective between conversion operations for using the comparator output for eliminating any difference between the potentials on the two input terminals to the comparator. This effects a zero adjustment. The signals to be digitised are applied by gate G3, Fig. 1 to a capacitor store CS where they are held during conversion. The output of the store is amplified to form one input to the comparator D. The balance signal is derived from a resistance network RN controlled by logical circuits receiving the output of the comparator to effect the necessary switching. After a conversion the store is cleared by gate G1 and the gate G2 is opened to cause the compensating circuit CC to operate counteracting base line drift of the amplifier and any shift in the working of the comparator. As shown in Fig. 3 the comparator consists of a longtailed pair of transistors T1A, T1B receiving the input analogue signal and the balance voltage respectively. If the store voltage is higher transistor T1A conducts. Cascaded transistors T2A, T3A and T4A also conduct, the last giving an output at OP. If the balance voltage is higher transistor T1B conducts and T2B, T3B, T4B. This gives a space mark. After clearing the store a pulse J2 (Fig. 1) is applied to transistor gate G2. Both inputs to the comparator should be zero but if the balance terminal signal is greater than the analogue terminal signal transistor T4B conducts charging capacitor C during time J2. The current increases in transistor T6 until the difference is eliminated. The charge on the capacitor decays slowly, the next conversion being made while this zero adjustment is effectively correct. Specification 976,959 is referred to.
Patent GB-1269159-A (GB)
Title: A speed control system for a linear induction motor
Inventor: NEW JOHN DOMINIC
IPC: E05F15/60
Filed: 1969-06-06
Abstract: 1,269,159. Linear motors. HAREFIELD RUBBER CO. Ltd. 28 May, 1970 [6 June, 1969], No. 28721/69. Heading H2A. The speed of a linear motor is controlled by varying the air gap between the primary and secondary members during relative linear movement between them, such variation being effected by mechanical means interacting between the members to move one of them in a direction normal to the air gap. As shown, the motor operates a sliding door 1 carrying the reaction rail 4 and the primary member 5 is supported on a plate 6 pivoted to a fixed bracket 9. The plate carries a U-shaped support 18 in turn supporting shaft 24 on which a wheel 25 is freely rotatable. The support 18 is adjustable so that the angle of inclination of shaft 24 to the direction of movement of the door, in the plane of said movement, and the angle of inclination of the shaft to said plane may both be varied. When the motor is energized, the member 5, which normally hangs away from the door as shown in Fig. 3, swings in until the wheel 25 contacts either the rail 4 or the door, and as the door moves the wheel rides up the shaft 25 so pivoting the member 5 away from the door and gradually increasing the air gap with the result that the motor speed decreases as the door reaches the end of its travel. When the motor is do-energized the member 5 swings away from the door and the wheel 25 falls to the bottom of the shaft 24. In the return direction of the door a further wheel 26, Fig. 1, on a shaft 27 angled oppositely to the shaft 24 functions similarly to the wheel 25 to vary the air gap.
Patent GB-1354052-A (GB)
Title: Machine for making ice cream
IPC: A23G9/20
Filed: 1972-06-20
Abstract: 1354052 Ice cream freezers ISERNIA AG 20 June 1972 [21 June 1971] 28773/72 Heading F4H  An ice cream freezing apparatus comprises a mixer-freezer 3 in a housing 1 having a dispensing device 4 to which a dispersion of gas and ice cream mix is supplied from a container 14 in a separate refrigerating compartment 9 by a conduit 15 surrounded by a sheath which may be flexible and through which circulates a coolant provided by a compressor (not shown). The gas is supplied from a cylinder 17 which may be positioned within or without the compartment 9, and the compressor cools both the refrigerating compartment and the mixer-freezer.
Patent GB-408978-A (GB)
Title: Improvements in instruments for measuring parallel coordinates
IPC: G01C11/06
Filed: 1933-10-18
Abstract: 408,978. Gauging-apparatus. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Oct. 18, 1933, No. 28781. Convention date, Oct. 22, 1932. [Class 106 (ii).] An instrument for measuring the parallel co-ordinates of the points of a plane surface comprises two rules 20, 21 which are parallel to the axial directions of a co - ordinate system and whose edges intersect each other at one point, the surface 1 to be measured being displaceable relative to this point in directions parallel to the axes, the surface being connected to two sighting devices 18, 19 whose sighting lines are parallel to it and at right angles to the axes. A template 1 in which are to be drilled holes, the coordinates of which are given, is clamped by bolts 7 to a plate 4 carrying pivot bolts 8 for two equal parallel links 9. The other ends of the links are pivoted to an angle plate 11 connected by pivoted equal and parallel links 14 to pivots 15 on the table 2 of a drilling machine The edges 22, 23 of the scales when produced intersect at the point 3 which corresponds to the axis of the drill. Plates 4, 11 are mounted on balls so as to move freely over the table 2. Arms 16, 17 of the plate 4 carry telescopes or microscopes 18, 19 which may be focussed on the scales. The co-ordinate of the point 3 are first determined and then given the co-ordinate of various points on the template 1, these points can be successively brought to the position of the drill and the hole drilled. The co-ordinates of marked points of the surface may similarly be obtained.
Patent GB-335369-A (GB)
Title: Improvements in covers for the valve-rockers of internal combustion engines
IPC: F02F7/00
Filed: 1929-09-24
Abstract: 335,369. Phillips, W. J. I. Sept. 24, 1929. Casings.-In means for holding the covers of the valve-rocker casings in position, a beam member 1 consisting of a metal strip 2 with notches 5 in its ends coacting with projections 3 on the covers 4, is centrally mounted on a vertical pin 6 on the cylinder head 7 and tightened by a nut or a spring.
Patent GB-158737-A (GB)
Title: An automatically operating carburetor for internal combustion engines
IPC: F02M7/22
Filed: 1919-11-20
Abstract: 158,737. Johnson, C. E. Nov. 20, 1919. Spray carburettors.-Relates to carburettors having a suction-operated air valve which automatically actuates the fuel-valve, the arrangement being such that the fuel-valve may be independently operated if desired. According to the invention, the free end of a lever controlling the fuel valve extends into the path of the air valve, the fuel valve being movable if necessary independently of the lever. The suction-operated cylindrical valve 8 sliding freely in the casing 2 controls the passage of air through a V-shaped port 11 and over a fuel jet 17 controlled by a vertically sliding spring-controlled needle 27. The mixture passes to the engine through a butterfly throttle valve 10 controlled by a lever 53 having wings engaging a fixed stop to limit the opening and closing movements. The needle 27 is connected by an adjustable coupling 26 to a rod 24 the upper end 25 of which is engaged by the forked end of an arm 35, the other end of which is pivotally connected to the cover 5. The arm 35 is lifted automatically as the air valve rises bv the fuel-valve control lever 38, the upper end of which pivots on an eccentric pin 42. The lower end 39 of the lever 38 engages a tapered hole 12 in the air valve as this rises, and an intermediate part 40 engages a projection 37 on the arm 35. To flood the carburettor at starting the needle valve 27 is raised by hand through a lever 51 and crank pin 50, Fig. 5. The initial relative positions of the lever 38 and arm 35 may be adjusted either by rotating the eccentric pivot pin 42 by an arm 45 or by vertically adjusting the pivot 34a by turning a milled nut 34.
Patent GB-718617-A (GB)
Title: Improvements relating to water couplings for rotary drilling machines as used, for example, in mines, quarries and the like
IPC: E21B21/01
Filed: 1951-12-10
Abstract: 718,617. Diaphragm pumps. SIEMENSSCHUCKERT (GREAT BRITAIN), Ltd., and DIXON, B. J. June 17, 1953 [Dec. 10, 1951], No. 28918/51. Class .102 (1). [Also in Group XXII] A water pump attachment for a rotary drilling machine, e.g. for mines and quarries, comprises a two-part shaft 12, 14, Fig. 2, supported by.self-oiling bearings 43, 44 in a housing 1, part 14 being attached to the motor and part 12 connecting with the hollow drill-rod. The parts of the shaft are screwed together and carry an eccentric 11, Fig. 3, engaging a crank 8 attached to diaphragms 6, 7 which, on reciprocation of the crank, alternately draw water from inlet 19 through check valves 27, 28 and deliver it through check valves 35, Fig. 4, to a passage 39. From here, the water enters an annular chamber 40, closed by seals 45, 46, and passes through ports 41 to the interior of hollow shaft 12 for delivery to the drill-rod.
Patent GB-292829-A (GB)
Title: Improvements in and relating to wrenches
IPC: B25G1/00
Filed: 1927-10-31
Abstract: 292,829. Schneider, A., (trading as Telefon - Telegrafen - Apparate - Bauanstalt A. Schneider). Oct. 10, 1927, [Convention date]. Rigid-jaw wrenches; handles.-The shaft 2 of a socket wrench 1 carried by a transverse operating bar 5 is fitted with a rotatably mounted holding member 4 held in position by a ring 3 and the transverse bar is bent into or provided with a crank 6 fitted with a sleeve 7. The tubular sleeve 4 may be replaced by a ring attached to a handle.
Patent GB-1096976-A (GB)
Title: Improvements in or relating to windscreen wipers
IPC: B60S1/40
Filed: 1966-06-29
Abstract: 1,096,976. Windscreen wipers. SWF SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. June 29, 1966 [Oct. 2, 1965], No. 29097/66. Heading A4F. A hooked end of a wiper arm is connected to a main wiper yoke of generally U-shaped cross-section by means of an insert 1 which is provided with two opposed inwardly facing bearing pins 7, 8 with which the hooked end can engage and with two opposed outwardly facing projections 11, 12 which engage with apertures (15, 16) (Fig. 4, not shown) in the main yoke (14) to support the insert 1 within the main yoke. The insert 1 may be of plastics material and provided with cross-pieces 4, 5 which ensure proper location of the insert 1 within the main yoke. The outwardly facing projections may be of circular or polygonal cross-section and the inwardly facing bearing pins may be. spaced by a removable member (20) (Fig. 5, not shown). The hooked end of the wiper arm, when fitted in the insert 1, is held in position by a spring- (18) (Fig. 4, not shown).
Patent GB-1512008-A (GB)
Title: Motor vehicle seat belt arrangements
IPC: A44B11/25
Filed: 1974-07-01
Abstract: 1512008 Locking device for safety belt CHRYSLER UNITED KINGDOM Ltd 21 May 1975 [1 July 1974] 29164/74 Heading A3V [Also in Division E2] A lap/diagonal seat belt has a buckle 10 in the belt run between lap 12 and diagonal 11 belt portions, the buckle having two releasable belt clamps 18 through which the belt is passed so that a loop of spare belt can be held to permit length adjustment of lap and/or diagonal portions when one or both clamps are released. As shown, buckle 10 comprises two metal pressings 13 riveted together. Plate 15 has a tongue for engaging a vehicle floor connector. Diagonal portion 11 of the belt passes through louvred slot 17 in pressing 13, through slot 19 in triangular clamp 18, around the clamp and back through slot 17, After forming a loop it again enters and leaves the buckle to become the lap portion 12. Rubber block 24 biases L-shaped levers 20, 21 and clamps 18 so that portion 11 and/or 12 may be shortened by pulling loop 25 but either or both levers must be pressed to lengthen either or both of portions 11, 12. In the embodiment of Figures 5 to 7 (not shown), the belt is threaded through slots (32) and around bars (35). Pressings (31) are biased out of alignment by spring (49). Clamps (34) slide in channels (33) so that tension in the diagonal or lap belt portion jams the belt against slot side (32a) whereas slack can be taken up by pulling the belt loop. Aligning the pressings causes a peg (54) on one pressing to engage the inside of a step (39) of the clamp (34) associated with the other pressing to move bar (35) away from side (32a). A bridge (55) may be attached to bar (35) to separate the two belt portions extending from one pressing. A plastics housing may be provided.
Patent GB-464695-A (GB)
Title: Improvements in or relating to electric clocks
IPC: G04B19/30
Filed: 1935-10-23
Abstract: 464,695. Time - alarm signals. FERRANTI, Ltd., and GRUNDY, E. Oct. 23, 1935, No. 29198. [Class 118 (ii)] [Also in Group XVIII] In an electric clock, means associated with a rotating member make and break the circuit of an electric lamp in the clock at predetermined times (e.g. 10 p.m. and 8 a.m.), said lamp shining through part 4 of the inner bezel 5 and being operated by current derived from the current driving the clock. A secondary winding 2, additional to the winding 1 which energizes the electric motor driving the clock, lights the low voltage lamp 3 which illuminates the dial through an opal glass section 4 of the ring 5. Winding 2 is connected at one end to a stud 7 and at the other end, through contacts 20, 21, to a bent bracket 6 into which the lamp 3 is screwed. The tip contact of the lamp meets a tongue carrying a stud 9 which contacts, through a hole in bracket 6, with the stud 7 mounted in, but insulated from, a member 8 attached to the clock frame. Guides 10 on the bracket 6 enable the latter to slide on the member 8 and the contacts 7 and 9 may be separated by swinging an insulated tongue 11 between them. The contact 20 is on a lever 17 pivoted at 18 to a bell-crank 15 which is itself pivoted at 16 and bears against a cam 13 on a spindle 14 rotating once in twenty-four hours. A spring 19 tends to thrust lever 17 and the left end of the bell-crank apart. As the cam 13 rotates, the lever 17 snaps off the high part of the cam and closes the contacts 20, 21. Subsequently, the upper limb of the bell-crank 15 snaps off this high part and opens the contacts 20, 21.
Patent GB-209861-A (GB)
Title: Improvements relating to electron discharge apparatus
IPC: H01R33/94
Filed: 1922-10-26
Abstract: 209,861. Western Electric Co., Ltd., and Willson, H. Oct. 26, 1922. Vacuum tubes. - An adapter for enabling a vacuum tube, such as a thermionic valve, of one type to be mounted in a holder of another type comprises a socket with contacts arranged to receive the tube, and connected with other contacts adapted to be fitted in the holder. Fig. 1 shows an adapter for mounting a valve of the American type in a holder of the British type. The socket 1 is of insulating material such as vulcanite and has a bayonet slot 2 and a notched plate 7 on which are mounted leaf-spring contacts 8 crossconnected with split plugs 5 mounted on a plate 3, which is secured to the socket by screws 11 and spaced by a ring 6. In a modification, the adapter consists of a metallic socket 20, Fig. 3, having a flange 21 spaced by insulating blocks 22 from an ebonite disc 23 on the lower side of which are mounted leaf-spring contacts 27 connected through metallic collars 25 with strips 28 on a disc 24 carrying the plugs 29. Insulating strips may be inserted between the strips 28 to enable the cross-connections to be made.
Patent GB-1089787-A (GB)
Title: Process for the preparation of oxalic acid
Inventor: BOICHARD JACQUES
IPC: C07C51/275
Filed: 1966-06-29
Abstract: Oxalic acid is prepared by the oxidation of ethylene with a solution of nitric acid which contains a palladium or mercury catalyst, the proportion of nitric acid in the solution being at least 16% by weight throughtout the reaction. Palladium metal or hydrated palladium oxide, which are converted to palladium nitrate in the reaction, or palladium chloride, nitrate, sulphate, oxalate or phosphate, or mercuric nitrate, acetate and sulphate may be used as the catalyst.  An apparatus is described in which the ethylene is bubbled into the nitric acid and oxygen is introduced above the reaction mass to complete oxidation of the nitrous vapours.
Patent GB-617942-A (GB)
Title: Improvements in or relating to arrangements for measuring or indicating the flow of fluids
IPC: G01F1/684
Filed: 1946-10-01
Abstract: 617,942. Flow-meters. KRONBERGER, H. Oct. 1, 1946, No. 29282. [Class 69 (i)] [Also in Groups XX and XXXVIII] An arrangement for measuring fluid flow comprises a flow-meter having a sensibly linear response over a range of flow rates, shunted by a laminar flow resistance constituted by a large number of passageways such that the percentage change in branching ratio with the mass flow is less than the percentage deviation from linear response in the flow-meter. As shown in Fig. J, a flow-meter of the kind described in Specification 591,690, [Crroup XXXVIII], and having a linear range of 50 c.c./min. of air or 300 c.c./ min. of hydrogen at normal temperature and pressure is adapted by means of a shunt to measure flows up to six kilograms per hour of hydrogen at N.T.P. The shunt comprises a brass tube 16, 37 inches long and 2 inches internal diameter, coupled to a standard 2-inch pipe-line 19 by internally smoothed flanges 17, 18. The passage in the tube 16 is split up into approximately 1600 similar narrow channels by partitions formed by sheets 21, Fig. 3, of terminal copper foil, alternate sheets being corrugated and the remainder flat. The flowmeter is connected to the shunt by approximately 3 yards of capillary tubing 23 of 0.7 mm. bore and by two short tubes 22 soldered at right angles into the larger tube 16.
Patent GB-461579-A (GB)
Title: Improvements relating to cigar or cigarette lighters
IPC: F23Q7/00
Filed: 1935-10-24
Abstract: 461,579. Electric igniters. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., RUSSELL, V. J. S., and SMITH, A. G. Oct. 24, 1935, No. 29356. [Class 75 (iii)] In a mains energized cigarette igniter in which the heating element is carried by a removable part k supported by a hollow base part a, two contact pins b are arranged in an annular recess h within the base part a so as to render them difficult of access to the fingers when the part k is detached. The heating element is connected by plug-and-socket couplings r, s with two arcuate contacts q resting on the pins b, the circuit being closed by depressing the latter against springs f by means of the part k into contact with spring contacts g connected with the mains by a flexible lead. The pins b may be arranged in separate recesses and the arcuate contacts q replaced by stud-like contacts. The heating element comprises a resistance wire v, which may pass through parallel refractory tubes u on the removable insulating piece t. A removable apertured cover w is lined with refractory material. A flange c on the part a may be secured between a heavy flanged metal ring x and supporting pieces 2, 3, the bottom being covered with baize, rubber, &c. According to the Provisional Specification, the pins b are supported at the base by resilient metal strips adapted to engage terminals in the base, and the ring x has an annular spigot engaged in a recess in the underside of the base.