baber/WOPTO huggingface dataset:
Patent GB-1200882-A (GB)
Title: Improved synchronised projector/tape recorder arrangement
Inventor: DAVIS TERRY PETER CLARKE
IPC: G03B21/00
Filed: 1966-07-23
Abstract: 1,200,882. Associated working; tape recorders. CITY OF COVENTRY CORP. 20 Oct., 1967 [23 July, 1966], No. 33227/66. Heading G5R. A separate control track on a tape in a tape recorder is used to control and synchronize a projector in normal forward mode and in backspacing for recapitulation. As described, a slide projector is controlled by a three-or fourtrack tape recorder, three tracks containing master, student and control information respectively for teaching languages, for example. The system functions are selected by pushbuttons 1-4, 16 and 37 operating relays connected to solenoids (not illustrated). Operation-loading tape.-A "load tape" button 16 is depressed to close the circuit of a photo-cell 40 associated with a continuously illuminated lamp 41 and to energize a "forward drive" relay 12 until a window in the tape passes the photo-cell 40 whereupon a "stop" relay 14 terminates drive. "Forward drive" button 2 is depressed to engage pinch rollers with a capstan to drive the tape, the control signals being fed to a relay 30 controlling slide-change mechanism. Backspacing is effected by holding down pushbutton 1 (recap button) during which time the tape and projector are back-spaced in synchronism, a further motor 46, which normally provides back tension, being energized to rewind the tape. A microswitch 32, located at the projector gate, operates relay 31 to allow backspacing only during forward drive and when a slide is located at the gate. Rewinding is effected by depressing pushbutton 3 whereupon the tape is fast wound and the slide-change mechanism reversed although not necessarily in sync. To ensure correspondence when forward drive is re-engaged after rewind, relays 20, 23 and 24 are arranged to complete the photo-cell circuit so that when the tape window first passes the photo-cell the rewind relays 13, 13a are de-energized to terminate rewind and spool brakes are applied. Delay capacitors 20a, 24a are provided so that the forward drive relay 12 is then energized until the window is opposite the photo-cell again, whereupon forward drive is terminated and the spool brakes reapplied. Meanwhile, a microswitch 36 is operated by the slide magazine 49 to stop the projector when reverse operation is completed. Unloading.-"Unload" button 37 is depressed to open the photo-cell circuit and override rewind switch 3 to energize rewind relay- 13, 13a so that the tape may be completely rewound on to the feed spool. Modifications.-The slides may be mounted in succession on the face of a rotatable disc instead of in a magazine.
Patent GB-1189303-A (GB)
Title: Improvements relating to Joints Between Elongated Metal Members
Inventor: FOSTER EDWARD RICHARD
IPC: F16B7/00
Filed: 1966-07-23
Abstract: 1,189,303. Furniture joints. ARNEX PRODUCTS Ltd. 24 July, 1967 [23 July, 1966], No. 33239/66. Heading A4H. The end of an element 11, 12 of tubular form or channel or I cross-section is joined to the side of another element 10 of tubular form or channel or L crosssection by passing tongues (16, 18) on the end of the first element 11, 12 through slots 17 in the second element and then bending the tongues. A tapered or domed filler piece 25, 26 may be driven between the tongues and the opposed side wall. The tongues are bent by a mandrel inserted into the element 10 or they are bent by driving in the filler pieces 25, 26.
Patent GB-898053-A (GB)
Title: Process for production of polymers and copolymers of propylene
IPC: C08F10/06
Filed: 1959-10-01
Abstract: A process for the preparation of a stable, solid polymer of propylene or copolymer of propylene with a monomer other than ethylene in which propylene or propylene and another monoolefin other than ethylene are polymerized at 10 to 3,000 atmospheres and temperatures up to 300 DEG C. in the presence of a polymerization initiator, comprises adding to the reaction mixture, after the polymerization reaction is completed and prior to discharging the reaction mixture to atmospheric pressure, a polymerization decelerator in amount 10 to 200 ppm of the polymer or copolymer, said decelerator being an alkylated hydroxyanisole, substituted phenylamine, 2,4,6-trialkyl phenol or b -thioether of a propionic acid ester.  Specified decelerators include t-butyl parahydroxyanisole; octylphenylamine, octadecylphenylamine, p,p1-diaminodiphenylmethane, triphenylamine, a - and b -naphthylamines, decyl-b -naphthylamine, dodecyl-a -naphthylamine, octadecyl-b -naphthylamine, symmetrical phenylnaphthylethylene diamine, symmetrical dinaphthylethylene diamine, diphenyl p-phenylenediamine; trimethyl-, triethyl-, triisopropyl-, tri-t-butyl-and tri-t-amyl phenols; 2-t-butyl-4,6-dimethyl phenol; 2,6-diethyl-, 2,6-dipropyl- and 2,6-di-t-butyl-4-methyl phenols; 2,6-diethyl-4-t-butyl phenol; 2,6-di-t-butyl-4-t-amyl phenol; 2,6-di-methyl-4-dodecyl phenol; 2,6-di-t-butyl-4-nonyl phenol; and the distearyl and dilauryl esters of b -thiodipropionic acid. Specified comonomers include butylene, amylene, tetrafluoroethylene, 1,2-dichloroethylene, 2-chloropropene-1, methyl vinyl ether, propyl vinyl ether, vinyl sulphonic esters, vinyl acetate, vinyl chloride, acrylic and methacrylic acids, amides and nitriles.  The initiator may be a compound of formula MnXm, MnRm or Mn(OR)m in which M is titanium, zirconium, cerium, vanadium, niobium, tantalum, chromium, molybdenum or tungsten; X is halogen; R is a monovalent substituted or unsubstituted hydrocarbon radical and m and n are integers, at least a part of the metal being present in a valency state of 2, or said compound being associated with sufficient reducing agent to reduce at least a part of said metal to a valency state of 2. Polymerization may be effected in liquid media, e.g. benzene, chlorobenzene, tertiary butanol and water.  In an example the dilauryl ester of b -thiodipropionic acid is added to the polymer prepared by polymerizing propylene in cyclohexane in the presence of a catalyst formed by mixing lithium aluminium tetra-n-hexyl and titanium chloride.  Specification 755,167 and U.S.A. Specification 2,564,106 are referred to.
Patent GB-1533719-A (GB)
Title: Automatic gain control means for a single sideband radio receiver
IPC: H03G3/20
Filed: 1976-08-10
Abstract: 1533719 Automatic gain control MOTOROLA Inc 10 Aug 1976 [22 Oct 1975] 33293/76 Heading H3T An automatic gain control (A.G.C.) signal from the audio stage of a single side band radio receiver is slow acting when the audio signal is low but fast acting when the audio signal is above a predetermined level. As described, the ouput from the audio preamplifier is applied through a clipper circuit 40, 41 to a transistor 43 which amplifies the peaks. Negative peaks are removed by diode 54 and positive peaks are passed by transistor 61 to charge a capacitor 90, the voltage on which is the A.G.C. signal. When the output from the audio preamplifier exceeds about 2À2 volts, the clipped peaks are sufficient to turn on transistor 45 and capacitor 90 is charged rapidly through resistors 102, 103 in parallel. Capacitor 90 has a slow discharge path through resistors 91 and 92, but if the audio signal ceases, transistors 61 and 65 turn off and after a 0À8 sec. delay due to capacitor 82, transistor 70 turns on to discharge capacitor 90 rapidly. The delay prevents discharge in response to inter-syllable gaps in speech. The A.G.C. voltage on capacitor 90 is applied through germanium diode 110 and resistor 111 to control a fieldeffect transistor r.f. attenuator. When the A.G.C. voltage reaches a value corresponding to near the end of the attenuator range of control, transistor 93 turns on applying the A.G.C. signal through germanium diode 97 and resistor 96 to control the gain of the i.f. amplifier. At the same time, transistor 101 is turned off to remove resistor 102 from 11 connection with 103 to reduce the fast charging rate of capacitor 90.
Patent GB-842451-A (GB)
Title: Control of axial flow machines
Inventor: ARSCOTT WILLIAM HAMMETT
IPC: F04D27/02
Filed: 1956-11-01
Abstract: 842,451. Axial-flow compressors; gas turbine plant. DE HAVILLAND ENGINE CO. Ltd., and DOWTY FUEL SYSTEMS Ltd. Oct. 31, 1957 [Nov. 1, 1956], No. 33431/56. Classes 110 (1) and 110 (3). [Also in Group XXIX] An apparatus for adjusting the angle of incidence of the guide vanes or stator blades of a gas turbine plant compressor comprises a control member connected to the guide vanes, a movable member subject to opposing forces which vary respectively in accordance with variations in at least two independent variable operating conditions, means operated by movement of said movable element to adjust the effective value of at least one of the forces relative to the other in a sense such as to obtain a balance between the forces and means for adjusting the control member in response to movement of the movable member. The movable member comprises a floating lever 14 subject on its left-hand side to a force applied by a differential expansion thermometer 11 exposed to air at the compressor intake. The right-hand side of the lever is subject to a force applied by a centrifugal governor 10 via linkages 12, 15 and an adjustable hinge point 16. The left-hand end of the lever 14 is connected to a pair of half-ball hydraulic relief valves 17, 18 controlling the escape of pressure fluid from one side or the other of a servo piston 23 to which fluid under pressure is supplied by a line 20. The piston 23 is connected by a link 24 to the movable fulcrum 25. Thus any movement of the lever 14 due to an out-of-balance force will cause the valves 17, 18 to allow fluid to escape from one side or the other of the piston 23 which will, in turn, cause the fulcrum to take up a position in which the forces are again balanced. The link 24 is also connected via a cam arrangement 31 to a servo-control valve 33 controlling the supply of fluid to a servo piston 35 connected by a link 37 to the guide vanes. The effect of ram pressure may also be applied as a third force to the differential lever 14. In another embodiment the temperature and speed loadings are applied to separate pivoted levers separated by a twin roller assembly constituting the movable fulcrum. In this embodiment the roller is adjusted to bring the levers into balanced condition by a cam arrangement operated by the linkage from the servo piston to the guide vanes.
Patent GB-947272-A (GB)
Title: Food container with expansible cover, in particular a popcorn package
IPC: B65D81/34
Filed: 1962-08-31
Abstract: 947,272. Food packages; portable containers. BLEVINS POPCORN CO. Inc. Aug. 31, 1962 [Oct. 13, 1961], No. 33454/62. Headings B8C and B8D. [Also in Division A4] A pan 11, as described filled with popcorn 18, and cooking oil 19, is fitted with an expansible cover 20, and a lid 23, by means of flanges 14, 15, 16. The cover has collapsed annular ridges 28, and depressions 29, and radial pleats 34, to take up the excess material when it is in flat form. When it is desired to cook the popcorn the lid is removed and the entire package is heated. The generated gases cause the cover to expand.
Patent GB-1093110-A (GB)
Title: Apparatus for handling bottle crates
Inventor: GRAHAM-ENOCK ARTHUR
IPC: B66F9/18
Filed: 1965-08-05
Abstract: 1,093,110. Fork lift truck. GRAHAM ENOCK MANUFACTURING CO. Ltd. July 15, 1966 [Aug. 5, 1965], No. 33504/65. Heading B8H. A crate carrying frame 1 attachable to the lifting mechanism 4 of a fork lift truck 5 comprises a lower hook or rows of hooks 6 for supporting the lowermost crate of a stack, and a further hook or rows thereof 7, 8 spaced vertically above the hooks 6 for supporting other crates of the stack. Each of the upper rows of hooks 7, 8 are vertically adjustable on the frame 1 by means of cam plates transversely movable on rollers on the frame and having detents therein to receive rollers on the hooks.
Patent GB-821047-A (GB)
Title: Improvements relating to keyboard-operated devices
IPC: H04L13/16
Filed: 1956-01-23
Abstract: 821,047. Typewriters &c. DIRKS, G. April 23, 1957 [Jan. 23, 1956], No. 33508/55. Class 100(4) [Also in Group XL(b)] A record controlled keyboard-operated machine has a photo-electric device which stops the feed of the record tape if a key or type, lever does not return to a predetermined position, so that jamming of the keys cannot occur due to signals being sensed faster than the keys can operate, a clearing bar which pushes back jammed keys and means for moving, the record, tape back one step, so that the section of record not printed due to jamming may be sensed again. The light beam may be interrupted by either the type levers or the key levers. Pulses from the photo-cell are fed to . the control arrangement shown in Fig. 2, which includes a flip-flop 9, an amplifier 10, a gas discharge stage 11 and a mechanical portion 12. A  positive pulse is generated when the light  beam is interrupted, which causes gas discharge tube 25 to fire and energize relay 28 to close contacts 28<SP>1</SP>. Closing contacts 28<SP>1</SP> energizes relay 31 which moves armature 32 away from arm 33 so that shaft 34 can turn roller 35 to advance the record tape one step. A negative pulse is generated as the light beam is interrupted by the key returning to rest, this resets the circuit ready for the next positive pulse to initiate another step forward of the record tape. Fig. 4 shows an arrangement for continuous movement of the record tape in direction 46a. When the tube 51 fires, under control of photo-cell 45, relay 54 holds contact 54<SP>1</SP> in position a to energize the clutch of 55 and rotate roller 58. If the light beam is interrupted for longer than a pre'-determined time;"relay 54 becomes de-energized and contact 54<SP>1</SP> moves to position b and de-energizes the clutch and operates the brake of 55.  Jammed key levers are reset by lever 63,  Fig. 5, moved in direction 67 by armature 64 and lever 65 and magnet 66 when the light beam is interrupted for longer than normal. When the latter happens relay 54 is not energized, therefore contact 54<SP>2</SP> is closed and 54<SP>3</SP> is open, allowing capacitor 68 to charge through resistor 69. This voltage on capacitor 68 fires tube 73 and current flows through magnet 66. At the  same time pin 77 closes contacts 78 which energizes magnet 80 to move armature 82 away from arm 83 and allow one rotation of shaft 84 in direction 89. During this rotation tape 49 is moved back one step so that the same portion may be sensed by means 60 for a second time. No signals are sensed during reverse movement of tape 46.
Patent GB-776188-A (GB)
Title: Improvements in a.c. mains-operated high-gain low frequency electronic amplifiers
Inventor: MCCALLISTER EDWARD SAMUEL
IPC: H04B15/02
Filed: 1954-11-19
Abstract: 776,188. Automatic regulation. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 7, 1955 [Nov. 19, 1954], No. 33575/54. Class 38 (4). [Also in Group XL (c)] A stabilized heater supply for high-gain lowfrequency amplifiers comprises a transformer 3, the primary of which is shunted with a gas-filled stabilizing tube 2 and connected, in series with a ballast resistor 1, to the A.C. supply. The transformer secondary is connected to the valve heaters, in series opposition to the secondary of an auxiliary transformer 4, the primary of which is connected directly across the A.C. supply.
Patent GB-678509-A (GB)
Title: Cultivating machine
IPC: A01B33/02
Filed: 1948-12-31
Abstract: 678,509. Agricultural implements. PEUBLE, A. M. Dec. 31, 1948 [Jan. 6, 1948], No. 33635/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 7, 1949.] Class 6(i) [Also in Group XXXI] A motor cultivator comprises an electric motor 3 which is connected to a flexible transmission shaft 14 by means of a belt and pulley drive 22. The shaft 14 drives an even number of helical tools 11 through bevel gearing 15 and speed-reducing gears, each tool revolving in the opposite direction to the adjacent tool or tools. The tools are provided with detachable shares 13 and are mounted on a frame 4 pivoted on the chassis 1. The frame 4 is balanced by a spring 7 and is adjusted in position by a handle 10 having a catch engaging a toothed sector rigid with the chassis. A device 23 operated by a grip 24 is used for adjusting the tension of the belts and also as a clutch for disconnecting the drive to the tools. The motor drives the landwheels 2 through worm gearing 16. Handles 17 are provided which pivot on a tubular rod 18. The height of the handles is adjusted by moving a slider 19 along the rod 18 by means of a handle-operated screw 20. In a modification the tools may be arranged to project laterally to enable the ground to be worked between plants or bushes, a shield being provided to protect the plants or bushes from the tools.
Patent GB-395572-A (GB)
Title: Improvements in and relating to processes for the manufacture of soaps having a disinfecting action and soaps produced thereby
IPC: C11D3/48
Filed: 1932-11-28
Abstract: 395,572. Disinfectants. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT VORM. ROESSLER, 7, Weissfrauenstrasse, Frankfort-on-Main, Germany. Nov. 28, 1932, No. 33680. Convention date, July 28. Addition to 395,570. [Class 81 (i).] Disinfectant silver-containing soaps which do not discolour are obtained by incorporating in soap a silver compound which is neither insoluble nor readily soluble in water. Silver subchloride, subbromide, and thiocyanate are suitable. There may also be added :- (1) substances containing active oxygen, e.g. sodium perborate or sodium pyrophosphate peroxide, (2) silver leaves, flakes, or powder which may have been activated or superficially oxidized electro-chemically or by permanganate or substances giving off active oxygen. For example, 0À5-1À0 per cent of silver subchloride is worked into soap, maybe with 0.75 per cent of silver powder previously activated by hydrogen peroxide ; or preferably dehydrated sodium perborate and silver subchloride are mixed with dried powdered soap, and the mixture is pressed at 100 atmos. to tablet &c. form.
Patent GB-760952-A (GB)
Title: Improvements in or relating to containers and closures therefor
IPC: B65D41/12
Filed: 1953-12-04
Abstract: 760,952. Container closures. DYSON, W. J., and WALLIS TIN STAMPING CO., Ltd. Dec. 1, 1954 [Dec. 4, 1953; March 1, 1954; Sept. 13, 1954], Nos. 33829/53; 5983/54 and 26478/54. Class 125(3). A closure cap 15 for jam jars &c. has an annular recess 16 to accommodate a sealing compound 17 and a resilient flange 18 indented at diametrically opposite points 20, 21 to engage under the shoulder 14 of the jar 10 there being clearance elsewhere between the flange 18 and the neck ring 12 of the jar so that pressure at the opposite ends of a diameter at right angles to the regions 20, 21 distorts the flange outwardly at 20, 21 and allows removal of the cap. The cap may also be used on jars having an interrupted screw thread.
Patent GB-444949-A (GB)
Title: Improvements in and relating to fluorescent screens
IPC: H01J29/18
Filed: 1935-12-06
Abstract: 444,949. Fluorescent screens. BOSCH, F. J. G. VAN DEN, 14, Norman's Buildings, Central Street, St. Luke's. London. Dec. 6, 1935, No. 33858. [Class 98 (i)] A fluorescent screen material comprising a mixture by weight of not less than 55 per cent and not more than 65 per cent of barium tungstate, not less than 25 per cent and not more than 35 per cent of zinc phosphate and not less than 5 per cent and not more than 15 per cent of zinc silicate emits a creamywhite light under the action of cathode rays.
Patent GB-1199939-A (GB)
Title: Combined Pusher Ship and Pushed Vessel Structure for Sailing on Open Sea
Inventor: IOZZA EMANUELE
IPC: B63B1/02
Filed: 1967-07-25
Abstract: 1,199,939. Combined pusher and pushed vessel. E. IOZZA. 25 July, 1967 [26 July, 1966; 26 Oct., 1966; 31 Jan., 1967; 24 Feb., 1967; 12 April, 1967; 22 May, 1967], No. 34012/67. Headings B7A and B7S. [Also in Divisions F1 and F4] A combined pusher ship and pushed vessel has lateral axles in one of the craft and resilient deformable bearings on the other craft capable of turning on the axles. In the embodiment shown, cylindrical axles 3 extend sideways from the bow of pusher ship 1 to engage a set of elastic cylinders 4 secured to the sides of recesses 402 in beams 302 extending rearwardly from the stern of pushed vessel 2. Clamping members 8 in the U-shaped stern of the pushed vessel 2 grip the bow of the pusher ship. Elastic bearing members 5 and 7 also help to clamp and absorb movement due to pitching and rolling. Figs. 10 and 11 (not shown) indicate how to recover part of the energy transmitted to the resilient deformable bearings by the movement between the pusher ship and pushed vessel, e.g. to produce electrical power.
Patent GB-1061762-A (GB)
Title: Cathodic protection system
IPC: H02M7/155
Filed: 1963-08-28
Abstract: 1,061,762. Automatic control systems for cathodic protection. HULL PROTECTORS, Inc. Aug.28, 1963 [Oct.17, 1962], No.34086/63. Heading G3R. A cathodic protection system for the hull 110 of a ship includes an anode 114 and a reference electrode 116, and is supplied from an A.C. source over a transformer 20, having a centretapped secondary winding, and controlled rectifiers 48, 50 which supply current to the system when transistors 62, 64 in their firing circuits are rendered conductive by a signal derived from the reference electrode 116. When the polarisation of the ship is below the polarisation of the reference electrode, the transistors 62, 64 are rendered conductive to cause firing of the controlled rectifiers, until the polarisation of the ship builds up to that of the reference electrode.
Patent GB-834670-A (GB)
Title: Shut-off valve
Inventor: BERCK WILLIAM FREDERICK
IPC: F16K3/24
Filed: 1956-11-08
Abstract: 834,670. Valves. BRODIE CO., R. N. Nov. 8, 1956, No. 34188/56. Class 135. A shut-off valve comprises a valve body 6 having an inlet chamber 7 and an outlet chamber 8, flow from the inlet chamber to the outlet chamber being controlled by a piston 17 movable within a cylinder 10, which is seated within the body 6 to communicate with the inlet chamber 7 through an open inner end and with the outlet chamber through ports 12 in the cylinder wall. The piston is urged to a port closing position by a spring 21 and is arranged to be moved to and from a port closing position by subjecting its inner end to inlet or outlet pressure by means of a control valve 30 located in the cylinder head. The valve either admits inlet pressure to the upper end of the cylinder via tube 42 and passages 41<SP>1</SP>, 41, 34, 341, 3411 or exhausts the cylinder to outlet pressure via passages 34<SP>11</SP>, 341, 34, 35, 35<SP>1</SP>, 36. The rate of movement of the piston can be regulated by adjustable restrictors in the fluid passages 41<SP>1</SP> and 351. The cylinder, piston and control valve assembly can be removed from the valve body as a unit for repair and replacement. The control valve may be actuated manually by a lever 45 or it may be actuated by hydraulic or pneumatic pressure or by a solenoid or by any other conventional means.
Patent GB-1047909-A (GB)
Title: Apparatus for continuously drying grain and seeds
IPC: F26B17/00
Filed: 1965-08-10
Abstract: 1,047,909. Drying grain and seeds. A. HINRICHS. Aug. 10, 1965, No. 34252/65. Heading A2. An apparatus for continuously drying grain and seeds comprises housing 3 having screens 5, 5a, 5b, 5c and 7 which are inclined alternately in opposite directions such that the material being dried flows from one to another, the housing being oscillated or vibrated during the drying process. The housing 3 has warm air and cold air inlets 9, 10 so that the upper part of the housing is a drying region and the lower part, a cooling region, and exhaust outlet 11. The housing 3 has material inlet and outlet 6, 8, the outlet 8 being adjustable. The height of the layer of material on the screens is controlled by adjustable members 13.