baber/WOPTO huggingface dataset:
Patent GB-1470261-A (GB)
Title: Method of and circuit arrangement for controlling overcurrents in converters
IPC: H02P7/28
Filed: 1974-07-29
Abstract: 1470261 Automatic control of converters BBC BROWN BOVERI & CO Ltd 29 July 1974 [31 July 1973] 33393/74 Heading G3R A current regulator in a converter circuit receives a required value signal which can be increased above a maximum permissible level for a predetermined time. A time delay occurs automatically before the permissible level may be exceeded again. As shown in Fig. 1, a drive system includes a speed or voltage regulator 1 supplying a required current signal 2 for a subordinate current control loop including a regulator 8 receiving an input 7 from a comparator 3. In addition to the signal 2, the comparator receives an actual current signal 4 and also has a connection 6 to an additional current supply device 5, Fig. 2, which supplies a further current signal to the comparator if the required current signal 2 approaches a limit value. This situation is detected by a threshold device 51 which supplies a positive or negative signal as appropriate over a diode 52 or 53 to energize an output threshold device 59 which supplies additional current to the comparator 3 for a time which is set by the values of a resistor 58 and a capacitor 55 or 57. After the threshold switch 59 has reverted to its normal state, the production of a subsequent additional signal is inhibited for a time which is set by the value of a resistor 54 or 56. In another embodiment, Fig. 5 (not shown), the output of the additional current supply 5 is connected as a control signal for a pair of transistors connected in parallel with the feedback path of a regulating amplifier serving as the comparator 3.
Patent GB-994653-A (GB)
Title: Electrical assemblies
Inventor: ATHERTON THOMAS GEOFFREY FENTO
IPC: H02B1/04
Filed: 1962-08-31
Abstract: 994,653. Clamps. DORMAN & SMITH Ltd. July 10, 1963 [Aug. 31, 1962], No. 33461/62. Heading E2B. [Also in Division H2] An electrical assembly comprises a moulded case circuit breaker or the like 11 and at least two clips 10 for releasably securing the circuit breaker to a support, each clip 10 having a tongue 14 which tongues engage into respective recesses 26 on opposite sides of the circuit breaker to hold the latter between the clips 10 with either a front or a rear face of the circuit breaker adjacent the support. As shown, the moulded case 21 of a circuit breaker 11 is provided at opposite ends with a pair of recesses 26 each pair of which is adapted to receive tongues 14 of the mounting clip 10. The clip is formed by a base 12 and side walls 13 which provide the tongues 14, and the base is slotted for a fixing bolt 19. Each tongue 14 is of dovetail shape and co-operates with a complementary surface 27 at each end of each slot 26 to allow the circuit breaker to be flush mounted or surface mounted on a panel 16 or 17 respectively. In a surface mounting arrangement, Fig. 6 (not shown) the panel constitutes the base of an enclosure having a lid or front panel which lies flush with the circuit breaker.
Patent GB-902663-A (GB)
Title: Improvements in or relating to change-speed drives
Inventor: SHAW JOHN
IPC: F22G7/06
Filed: 1958-10-21
Abstract: 902,663. Change-speed gear. TUNGUM CO. Ltd. Oct. 14, 1959 [Oct. 21, 1958], No. 33581/58. Class 80 (2). Change-speed belt gearing for drilling machines &c., comprises oppositely-stepped driving and driven pulleys 1, 3, each pair of steps on the pulleys being loosely surrounded by its own V-belt 5 and a jockey pulley 6 on a handoperated ratio selecting and establishing sliding rod 23 being aligned with a selected belt and then moved inwardly to tension the belt so that it grips the pulleys for the transmission of torque, the loose belts being held in position aligned with their pulleys by a surrounding two-part case 17a, 17b, split in the plane containing the pulley axes. As shown, the case 17a, 17b is of cast iron and surrounds all the belts 5, but alternatively a separate case may be provided for each belt. The jockey pulley 6 is mounted at the end of a rod 23 sliding axially through a hole 22 in a block 21, itself sliding at an angle to the axes of the pulleys in guides 20, 20 formed in a cast gearcase 17. The rod 23 contains a spring 24 engaging a pin 27 carried by a ratio selecting and establishing lever 28 pivoted at its lower end through a link 30 on the block 21. A spring-biased locking detent 14 controlled by a catch 15 engages one of a number of holes 13 to hold the ratio establishing lever 28 in the notches 12 in the guide 11. To select a ratio, the lever 28 is pivoted away from the position shown in Fig. 1, in which it engages one or other of the notches 12, and is moved sideways so that the block 21 slides along between its guides 20, 20. When the jockey pulley 6 is opposite the selected belt 5, the lever 28 is pushed back into the corresponding notch 12, so that the pin 27 carried by the lever compresses the spring 26 which slides the rod 23 to the left of Fig. 1, causing the jockey pulley to tension the belt. The locking detent 14 is biased by its spring to engage in the adjacent hole 13, thus holding the ratio establishing lever 28 in its notch 12.
Patent GB-767512-A (GB)
Title: Improvements relating to boring bars
IPC: B23B29/03
Filed: 1953-12-03
Abstract: 767,512. Boring-heads. MICKLETHWAIT, E. W. E. (Forbes, S. J., and Schmidt, P. S.). March 2, 1955 [Dec. 3, 1953], No. 33683/53. Class 83 (3). A boring-head 1 comprises an axial flute partly defined by a surface lying in a chordal plane of the head and extending axially in both directions from a cutter 15. The flute clears swarf, and conveys to the cutters coolant delivered to the flute through one or more passages 56 leading from a screwed tube 59 for drawing the shank 8 into a tailstock 2, a key 9 locking the shank. Chordal surfaces 24a, 24b separate the parts of the flute formed by shoulders 27, 29 on the head, which has cutters 14,15 for a roughing cut in the nose of a projectile 3; finishing-cutters 16, 17; an end-facing cutter 18, and a cutter 19 for chamfering the end of the bore; an additional cutter may turn an outer surface. The flute extends into a chordal relief-opening 25 which extends past a shoulder 31 for the tool 18 into a pocket 26. On the opposite side of the head, Fig. 3, the cutting-edges are beneath the cutters, and a flute 23, without chordal relief, is provided. Cutter 19 is secured by grub-screws 52-54 and adjusted by the conical end of screw 54. The other cutters are located by clamping pins 38, 42, 47 (Fig. 2, not shown), contained in a central bore 57, the pins having frusto-conical ends to engage the inclined walls of recesses 39, Fig. 8, in the cutters which are adjustable by screws 37 and clamped in pairs by screws 34. A rib 33 on the cutter 14 slides in a slot 32 in the cutter 15 during adjustment by the screw 37, which engages threads in a block 36 and bears against the cutter 14. The pins 42, 47 are pressed against the cutters by the conical ends of screws 44, 48 and clamped by grub-screws 46, 49 and pin 38 engages threads in the bore 37 and is clamped by grub-screw 41. The Provisional Specification describes also the provision of a coolant opening in both flutes.
Patent GB-1133266-A (GB)
Title: Improvements in electric cables
Inventor: HIGGINS PETER
IPC: H02G15/18
Filed: 1966-07-28
Abstract: 1,133,266. Enclosing cable joints. BRITISH INSULATED CALLENDER'S CABLES Ltd. 27 July, 1967 [28 July, 1966], No. 34015/66. Heading H2E. [Also in Division H1] A distribution cable has one or more power conductors 2, an outer conductor 5 and branch cables 11 comprising one or more power conductors 12 permanently connected at spaced locations along its length. The branch cables may be long enough to be service cables and two or more of them may be connected at some or all of the spaced locations (e.g. at 30-60 feet intervals) and the connections may be surrounded by moulded plastics insulation 18 such as a P.V.C. compound or acrylic syrup. The conductor 5 may consist of copper wires which are parted to allow the conductors 2 and 12 which may be of A1 (or A1 alloy) to be welded together. The insulation 3 may be ethylene propylene rubber and the sheathing 6, 13 and 16 may be P.V.C. The method of making the above connections is described and claimed in detail. Specification 1,023,367 is referred to.
Patent GB-429615-A (GB)
Title: Improvements in and relating to wetting out agents
IPC: A01N25/30
Filed: 1933-12-04
Abstract: A mixture of a sulphonated higher alcohol and a sulphonic acid of an alkylated aromatic hydrocarbon is used to improve insecticidal, fungicidal and other toxic horticultural preparations whether in the form of washes or dusting powders. The wetting properties of the former and the spreading power of the latter, under damp conditions are increased.  Preparations containing nicotine dust, Bordeaux dust, petroleum emulsions and colloidal lead arsenate are mentioned. Sugar, gummy, or resinous material, e.g. gum arabic, and fillers, e.g. china clay may be used in association with the mixture. Examples are given of preparations which contain sulphonated lorol, di-isopropyl naphthalenesulphonic acid, gum arabic and china clay.ALSO:A mixture of a sulphonated higher alcohol and a sulphonic acid of an alkylated aromatic hydrocarbon is used to improve insecticidal, fungicidal and other toxic horticultural preparations whether in the form of washes or dusting powders. Preparations containing nicotine, Bordeaux dust, petroleum emulsions and colloidal lead arsenate are mentioned.  Sugar, gummy or resinous material, e.g. gum arabic, and fillers, e.g. china clay, may be used in association with the mixture.  Examples are given of preparations which contain sulphonated lorol, di-isopropyl naphthalenesulphonic acid, gum arabic and china clay.
Patent GB-1362346-A (GB)
Title: Pattern for a one piece mould
IPC: B22C7/00
Filed: 1972-07-20
Abstract: 1362346 Foundry patterns CATERPILLAR TRACTOR CO 20 July 1972 [26 July 1971] 34056/72 Heading B3F A foundry pattern P for forming moulds S for seal rings having backdraft portions comprises a rigid sleeve member 11 having wall portions 30, 32 tapering from a base portion and an elastomeric skin 12, e.g. of silicone rubber bonded to the wall portion 30, 32, the skin 12 having an integral flexible backdraft-forming portion 13. The rigid sleeve member 11 is bolted at 17 to a disc-shaped base 10 holding rough lower edges 14 of the elastomeric skin 12 between the sleeve 11 and base 10. Several bases 10 with patterns P may be bolted on to a pattern plate 20. As the patterns P are removed from a cured mould S the backdraft portion 13 flexes so as not to damage the mould S.
Patent GB-411826-A (GB)
Title: Improvements in separable electrical contact devices
IPC: H01R13/627
Filed: 1933-12-05
Abstract: 411,826. Plug couplings. CINCH MANUFACTURING CORPORATION, 2335, West Van Buren Street, Chicago, U.S.A.- (Assignees of Pool, E. J. ; 209, East 78th Street, Chicago, U.S.A.) Dec. 5, 1933, No. 34173. Convention date, Dec. 13, 1932. [Class 38 (i).] A multiple plug- and-socket coupling is provided with a snap fastener of the press-stud type to hold the interengaging elements in position. Plugs 3 mounted in a circle on a carrier 1 enter sockets 5 mounted in a casing 2. At the centre of the carrier 1 is a press stud 10 adapted to engage a socket 9 on the base of the casing 2, a spring ring 12 in the socket serving to grip the stud. The socket 9 is secured by a hollow rivet 13 and holds a guide ring 14 in place.
Patent GB-900853-A (GB)
Title: Improvements in or relating to sampling method and apparatus for chromotographic analysis
IPC: G01N30/40
Filed: 1958-10-27
Abstract: <PICT:0900853/III/1> <PICT:0900853/III/2> A sample stream flows through line 92 to sample loop 48 and exhausts to the atmosphere while one portion of the carrier stream flows through secondary chromatographic column 86 and a second portion flows through preliminary column 54.  The valve 10 is rotated through 36 degrees so that the connections are connected as indicated by dotted lines.  A portion of the carrier stream carries the sample through the two columns and the analysis cell 84.  As soon as a partial separation in the preliminary cell into long and short retention-time components has taken place and before any long retentiontime components enter the second column the valve is reversed to its former position and the long retention-time components are now analysed.  The rotary sampling valve 10 comprises two cylinders 12 and 14 fixed together by means of rotatable shaft 16 and compression spring 26.  The upper body 12 has five pairs of longitudinal bores while the bottom has ten bores for connection as described above.
Patent GB-988982-A (GB)
Title: Colloidal particles, sols containing them and processes for the preparation thereof
IPC: C01G25/02
Filed: 1963-08-29
Abstract: In a colloidal sol, the particles consist of an actinide oxide intimately associated with zirconia in the weight ratio of 5:1 to 1:1 and have diameters in the range 3 to 9 millimicrons. The actinide oxide may be urania or the oxide of neptunium, thorium, plutonium, americium or curium.  Sols containing up to 20% by weight of such particles are prepared by removing anions from a solution containing actinide metal and zirconium salts by electrodialysis. The anions are preferably those of a strong monobasic acid, though oxidizing anions, e.g. nitrate, are avoided.  A mixed chloride solution, e.g. uranyl and zirconyl chlorides, is preferred.  The salt solution, in a concentration of 0.1 to 15 weight per cent based on total oxides is circulated from a stirred reservoir held at 40-120 DEG  C., preferably at about 80 DEG  C. through a water cooler to the cathode compartment of the electrodialysis cell, and returned to the reservoir. Electrodialysis is discontinued when the specific conductance is reduced to 10-2 to 3 x 10-4 mhos/cm.  The pH is 2.5 to 4.5.  Specifications 905,920 and 910,212 are referred to.
Patent GB-765133-A (GB)
Title: Improvements in or relating to methods of increasing the work-function of metal electrode parts for electric discharge tubes
IPC: H01J19/00
Filed: 1954-11-26
Abstract: The work-function of metal electrode parts for electric discharge tubes is increased by subjecting said parts to ultrasonic radiation. A preliminary electrolytic polishing of the parts is preferred.  As an example, parts for a television tube electron lens are treated in a bath of ethyl alcohol for several minutes at a frequency of 26,000 kc/s, with 50 watts on the magnetostriction core.  This process is stated to increase the work-function by 20-25 per cent.
Patent GB-1098766-A (GB)
Title: A resilient harrow tooth
IPC: A01B23/02
Filed: 1966-08-01
Abstract: 1,098,766. Agricultural implements. A. ANDERSENS STAALVAREFABRIK A.S. Aug. 1, 1966 [Aug. 7, 1965], No. 34404/66. Heading A1B. A harrow tooth comprises a soil working part 1 connected to a resilient part 4 by two triangular flanged plates 3 clamped together by means of a bolt which is passed through a hole 6.
Patent GB-337985-A (GB)
Title: Apparatus for determining whether there be any strain in a spectacle lens when mounted in its frame or rimless clip
IPC: G01L1/24
Filed: 1929-11-12
Abstract: 337,985. Bateman, F. W., and Bateman & Co., Ltd., F. Nov. 12, 1929. Polarizing-apparatus. - Strain in spectacle lenses is detected by examination of the lenses in polarized light. Light from a frosted electric globe is reflected from a polished black surface A being polarized thereby, and received in an analysing eyepiece K mounted on a support a. The lens to be examined is held between the eyepiece K and the plate A revealing white streaks in the parts strained. The plate A may be pivoted as shown to a wall bracket D so that it may be turned out of the way when not in use.
Patent GB-184764-A (GB)
Title: Improvements in or relating to counter-balance and operating devices for sliding windows
IPC: E05D13/00
Filed: 1921-12-23
Abstract: 184,764. Dandois et Cie, J. B. Aug. 13, 1921, [Convention date]. Addition to 173,227. Vehicle-window opening and closing apparatus; sashes balanced by springs.-The balancing- lever a of a window-balancing device of the kind described in the parent Specification is pivoted to a removable bracket d on the door frame, and an operating-handle f is provided on the pivot c. The window is balanced by an adjustable spring-controlled link m and stirrup l preferably having a roller q bearing on the lever; and the contour of the end b of the lever is so made that the window is balanced in all positions. An operating-stud &c. may be fixed to the window. The lever has a roller g engaging the window between the lower edge and a guide-rod j.
Patent GB-1029956-A (GB)
Title: Improvements in or relating to calculating machines
Inventor: KITZ NORBERT
IPC: G06F7/491
Filed: 1961-10-02
Abstract: 1,029,956. Electric calculating apparatus. BELL PUNCH CO. Ltd. Sept. 28, 1962 [Oct. 2, 1961], No. 34660/64. Divided out of 1,029,953. Heading G4A. The description is substantially identical with that of the parent Specification, but the claims relate to the association of the orders of the set keys with successively higher orders of the decimal accumulator counting stages in a multiplication operation.
Patent GB-513110-A (GB)
Title: Improvements in or relating to electric follow-up control systems
IPC: G05D3/14
Filed: 1937-12-14
Abstract: 513,110. Electric control systems. VICKERSARMSTRONGS, Ltd., and WATSON, P. J. Dec. 14, 1937, No. 34663. [Class 40 (i)] A power follow-up system applicable to the control of repeater instruments from a magnetic compass or to gyroscopic apparatus comprises a normally balanced hard thermionic valve circuit with which an E.M.F. is injected in dependence on the magnitude and direction of the movement between control and controlled members as determined by capacitative coupling arrangements therebetween, the controlled member being driven to rebalance the circuit by a Ward- Leonard system controlled by the output of the circuit. Auxiliary arrangements are provided to exercise control in accordance with the rate of change of displacement of the control member and to compensate lag which is dependent on the speed and also on the load. The control member 1 driven for example manually by shaft 3 and worm 4, carries three 'condenser plates 14-16 which co-operate with two plates 12, 13 carried by the controlled member 6 and normally symmetrically disposed in relation to the plates 14-16 so that the couplings between an H.F. source 17 and amplifiers 22, 23 are equal. When the control member moves, the couplings are varied differentially and there is an output from opposed rectifiers 24, 25, fed by the amplifiers, which differentially varies the normal grid bias on a pair of valves 27, 28, or a pair of groups of valves, so that the current in the exciting windings 51, 52 of a Ward-Leonard generator 56 is differentially varied resulting in an output current dependent in magnitude and direction from the movement of the control member. This is applied to the armature 10 of a D.C. motor having a constant field 61 to drive the controlled member to restore the capacitative balance. The resistance-condenser combination 39, 40 in the grid circuit of one of the valves 27, 28 introduces a factor dependent on the rate of change of displacement of the control member, and a device 44 injects into the system an unbalancing E.M.F. proportional to the speed of the system or the load. The device 44 may be a speed measuring device, gyroscopic or centrifugal, operated from the input of the system, use may be made of an electrical quantity derived from the exciting current of the Ward-Leonard generator, or the voltage applied to the motor armature 10, or partly from the output voltage of the generator and the current in armature 10. A lag correction may be obtained by a differential gear in the output side which adds a displacement dependent on the speed of the control member.
Patent GB-1201130-A (GB)
Title: Vibratory rollers
Inventor: COWLEY HAROLD RAYMOND
IPC: E01C19/28
Filed: 1968-07-22
Abstract: 1,201,130. Road rollers. STOTHERT & PITT Ltd. 22 July, 1968, No. 34877/68. Heading B7H. In a pedestrian-operated road roller comprising two motor-propelled vibratory singleroll units R, R<SP>1</SP> connected in tandem, a steering handle 7 is provided on the trailing unit R, coupling means articulately connect the units R, R<SP>1</SP> for relative steering movements, and control means for the traction and vibratory drives of both units R, R<SP>1</SP> are provided on the steering handle 7. Hand levers 10, 10<SP>1</SP> on the handle 7 are connected by cables to levers 13 for actuating vibrator clutches. A control lever 14 on the handle 7 selects forward or reverse drive through linkage 15, 16, 17, 18 and 15<SP>1</SP>, 16<SP>1</SP>, 17<SP>1</SP>, 18<SP>1</SP>. The units R ,  R<SP>1</SP> are connected by a stud 25 inserted in holes in U- shaped brackets 20, 22, one rigidly connected to the unit R<SP>1</SP>, and the other connected to the unit R by a boss 23 and socket 24 so that the bracket can pivot about a fore-and-aft axis.
Patent GB-411533-A (GB)
Title: Improvement in fluid or water level control
IPC: D06F34/08
Filed: 1932-12-09
Abstract: 411,533. Fluid - actuated valves. PROSPERITY CO., Inc., Beattie Street, Syracuse, New York, U.S.A.-(Assignees of Braun, P. N. ; 139, Alanson Place, Syracuse, New York, U.S.A.) Dec. 9, 1932, No. 35007. Convention date, Feb. 10. [Class 135.] Valves controlled by pilot or relay valves.- A time-controlled valve device for controlling the supply of liquid to a tank or receptacle such as a washing-machine during a series of filling operations and provided with float operated means whereby the level attained during each filling period is determined has means controlled by the timing device for adjusting the float operated means to vary the control point. The hot and cold water valves controlling the supply to the pipe 4, the dump valve 9 and valves 12 and 13 controlling the adjusting device are all actuated by compressed air acting on pistons under the control of auxiliary valves 35-38 mounted on a manifold 39 and actuated by electromagnets 41-44. The magnets 41, 42 are wholly controlled and the magnets 43, 44 in part controlled by a time switch 26 comprising a series of contacts 31-34 adapted in operation to pass through slots 27-28 in an insulating disc (paper) and make contact with a rotating turntable carrying the disc. The magnets 43, 44 are further controlled by a float operated switch 70. When the contact 31 passes through a slot 27, magnet 41 is energized to open auxiliary valve 35 admitting compressed air to the cylinder 23 which operates an arm adapted to engage a treadle 25 to open the dump valve 9. At the same time pressure fluid from the conduit 53 is admitted through the valve 12 to the cylinder 11 raising the piston 14, switch arm 73 and float 15 to the extreme upper position. When the contact 32 passes through a slot 27 magnet 43 is energized to open the auxiliary valve 36 to supply compressed air to a cylinder to open the valve 13. This valve allows water to drain from the cylinder 11 permitting the piston and float to fall a predetermined amount dependent on the length of the slot 28. At this stage the switch arm rests on a shoulder permitting the mercury to connect contacts 81, 82 included in the circuits of the magnets 43, 44, so that when either or both of the contacts pass through slots 27 the magnets 43, 44 are energized to initiate the opening of the hot and cold water valves. As the water approaches the predetermined level a collar 77 on the spindle 71 of the float 15 engages the switch arm and raises it to the horizontal position, thus breaking the circuit and initiating the closing of the supply valves.