baber/WOPTO huggingface dataset:
Patent GB-259613-A (GB)
IPC: H03F3/02
Filed: 1926-10-09
Abstract: 259,613. Hazeltine Corporation, (Assignees of MacDonald, W. A.). Oct. 10. 1925, [Convention date]. Thermionic amplifiers. - In a high-frequency amplifier to obtain a substantially constant amplification factor over a wide frequency band a plurality of stages is employed eacn giving a maximum amplification at a wavelength different from the others. The Figure shows a high-frequency amplifier coupled by transformers T2, T3, T4 and provided with condensers Cn1, Cn2, Cn3 to neutralise inherent reaction. The transformers are so selected that the impedances of their output circuits are equal to the valve impedances at different wavelengths e.g. T2 at 267 metres, T3 at 400 metres, and T4 at 533 metres so that a substantially constant overall amplification is obtained over the band 200-600 metres. Alternatively at an intermediate wavelength e.g. 400 metres the transformers T2, T3, T4 may have impedances respectively less than, equal to, and greater than the valve impedance to obtain a similar overall amplification.
Patent GB-1319003-A (GB)
Title: Decompression device for internal combustion engines
IPC: F01L13/08
Filed: 1971-04-19
Abstract: 1319003 Starting MOTORENFABRIK HATZ GmbH 19 April 1971 [23 April 1970] 25217/71 Heading F1K Decompression device for an I.C. engine  having the valves operated by push rods and rockers, the device comprising a rotatable eccentric bearing for the rocker which is turnable by an automatic device in a direction to terminate the decompression, the eccentric being fixed on a mounting shaft and forming a bearing for a rocking lever operating a decompression valve, the automatic device consisting of a disc coaxial with and coupled to the mounting shaft and a driver which is rotatable about the shaft and engages the disc, whereby the maximum eccentricity of the cam can be utilised. Exhaust valve 2 is opened against spring 3 by push rod 5 acting through rocker arm 6. An eccentric bearing 7a is formed on the rocker shaft 7 which is rotatable by a hand grip 8 relative to the valve housing 1. When the shaft is turned through 180 degrees from the position shown in Fig. 1, the valve is moved downwardly through a distance "H". A device for automatically progressively reducing the decompression as the engine rotates comprises a ratchet wheel 9 secured to the shaft 7 and a spring arm 12 secured to the inlet valve rocker arm 11. As the rocker arms oscillate relative to one another, the arm 12 rotates the ratchet wheel tooth-bytooth, until the eccentric has been returned to the position of Fig. 1. When the ratchet wheel has rotated the shaft to this position, a part of the wheel having no teeth is under the arm, so that no further movement of the wheel recurs.
Patent GB-1292790-A (GB)
Title: Phenyl derivatives and a process for the manufacture thereof
IPC: A01N37/40
Filed: 1971-04-19
Abstract: 1292790 Phenyl derivatives F HOFFMANNLA ROCHE & CO AG 19 April 1971 [25 March 1970] 25244/71 Heading C2C  The invention comprises phenyl derivatives of the general formula wherein m, n and p each represent zero or 1, at least one of m, n and p being 1; R<SP>1</SP>, R<SP>3</SP> and R<SP>5</SP> each represent an ethyl or methyl group; R<SP>2</SP> and R<SP>4</SP> each represent a hydrogen atom or a methyl group; R<SP>6</SP> is an alkynyl group; A, B, C, D, E and F each represent a hydrogen atom or two on adjacent carbon atoms represent a carbon-carbon bond and/or two in the terminal position represent an oxygen bridge; Z is an oxygen or sulphur atom; Y and Y<SP>1</SP> are a hydrogen or halogen atom or an alkyl or alkoxy group and X represents an oxygen atom, a -CH 2 O- group or a -COO-group. They may be prepared by (a) reacting a compound of the formula where M is an alkali metal or, when X is oxygen, a hydrogen atom, with an alkynyl halide; or (b) reacting a compound of the formula with a compound of the formula where M<SP>1</SP> is an alkali metal or, when Z is oxygen, a hydrogen atom; or (c) reacting a compound of the formula  where R<SP>7</SP> is a hydrogen atom or an alkyl or aralkyl group with an alcohol of the formula and, if desired, epoxidizing a compound of Formula I which has a terminal double bond. The compounds of the invention may be used as active ingredients in pesticidal compositions.
Patent GB-587993-A (GB)
Title: Improvements in aircraft control systems
IPC: B64C13/24
Filed: 1944-12-16
Abstract: 587,993. Aircraft control systems. TOBIN, L. M. [Representative of TOBIN, J. R.]. Dec. 16, 1944, No. 25267. [Class 4] The operation of a spring tab 17, on an aircraft control surface, here an elevator 7, is modified by a weight 18, situated forwardly of the hinge line of the tab and so connected that its acceleration in the plane of movement of the surface results in the application of forces to the tab or to the tab actuating mechanism. In one form, rod 1, connected to the joystick, rocks an arm 2 and a member 8, fast therewith about a pivot 3 in the tailplane 4, and thus operates the elevator 7 through a spring box 5 and a member 6, secured to the elevator, simultaneously operating the spring tab 17 through a link 9, lever 10 pivoted at 11 to the elevator, link 12, rock shaft 14 and link 16 through the same angle. Thus, only if the spring box 5 is compressed as a result of aerodynamic force on the surface 7 is the tab 17 moved relatively to the surface to provide a servo action. The weight 18 is carried by arms 19, pivoted to the aircraft framework and secured to a lever 20 pivoted to a link 21, so that the accelerations of the weight 18, due to the movement of the tab 17 and of the aircraft, cause the application of forces to the control mechanism 1. Alternatively, the weight may be directly secured to the shaft 14, extending radially therefrom in a horizontal plane, or may be attached to the tab. The device is also applicable to the rudder or ailerons. The general effect is to modify control movement by preventing " touchiness," reducing the required operating force and preventing excessive control movements from adversely affecting stability. The invention may also be applied to a spring tab of the type in which the control surface is operated directly and the tab is operated through a spring.
Patent GB-686739-A (GB)
Title: Improvements in handle-operated electric motor starting switches
Inventor: ALTER SIEGFRIED
IPC: H01H73/30
Filed: 1950-03-02
Abstract: 686,739. Automatic circuit-breakers. CRABTREE & CO., Ltd., J. A. Oct. 3, 1950 [March 2 1950], No. 25543/51. Divided out of 686,688. Class 38 (v) A handle-operated motor starting switch such as that of Specification 686,688, has a catch mechanism for holding a spring-pressed moving contact carrier in the "on" position, the catch riding over a ball or roller, for ensuring smooth action. The switch may be tripped under overload conditions by bimetallic strips (not shown) which act on a pivoted metal trip bar 23 to turn an ambient temperature compensating arm 21, Fig. 4 out of engagement with a stressed spring blade 19. Theblade 19, now released, strikes an arm t<SP>6</SP> of the L-shaped catch lever t, which has ears t<SP>I</SP> projecting into apertures 3a in a plate 3, and retained therein by arms 3b bent down from a bracket formation 3c of the plate 3. The lever t now turns about its pivots to disengage its hardened metal flange t<SP>4</SP> from engagement with a ball v carried by the contact carrier e, Fig. 2. A spring r forces the contact carrier e to the open position, Fig. 3, the flange t<SP>4</SP> riding over the ball v. Projections e<SP>8</SP> on the carrier restore the blade 19 to its original position for re-engagement by the arm 21 when the bimetals cool. For current setting purposes, the blade 19 is adjustable about a fixed pivot 29 by a stud 36 eccentrically mounted on a bush 35 which may be rotated by a pointer (not shown) capable of adjustment relative to the bush for the initial setting. The switch is closed by a handle such as the sliding handle of Specification 686,741, which by means of a stud s moves the contact carrier e to the left against the spring v until the flange t<SP>4</SP> of the lever t which is biassed by a spring u, moves into abutting engagement with the ball v. To open the switch manually, the handle 10 is moved towards the "off" position and the initial movement of the stud s to the right is effective to move a plate w to the right against a spring x until a projecting arm w<SP>2</SP> of the plate engages with the lever t and raises the flange t<SP>4</SP> out of engagement with the ball v. The spring r then moves the contact carrier to the open position. Specification 686,740 also is referred to.
Patent GB-1276724-A (GB)
Title: Advertising devices
IPC: G09F25/00
Filed: 1969-05-20
Abstract: 1276724 Display devices; signalling systems IMPULS-REKLAM AB 20 May 1969 [29 May 1968] 25582/69 Headings G4F and G5C When a person P interrupts ultrasonic waves transmitted between a transmitter S and a receiver M via a reflecting surface, a relay Rm is closed thereby charging a capacitor K and operating a relay Rk by making positive the base of a transistor T: a tape recorder Bsp is activated by its connection to mains voltage V through the contacts of the relay Rk. The device may be used for advertising purposes in a shop, and the tape recorder may be replaced or supplemented by a projector either for slides or film. The circuit is so arranged that so long as a signal is put out through a loud-speaker outlet HT, the tape recorder is connected.
Patent GB-187809-A (GB)
Title: Improvements in baby carriages
IPC: B62B9/18
Filed: 1921-09-28
Abstract: 187,809. Harris, A. Sept. 28, 1921. Push-bars; springs, arrangement of.- Each side spring of a baby carriage is built up of three separate parts comprising a downwardly bowed base e and two end portions f, f<2> of substantially swan neck and breast shape riveted to the ends of the base. The end g of each portion f, f<2> is disposed outwardly and formed with an eye for connection to a shackle h which is connected to a peg j on the body by an inclined strap i. The handle k which is secured to the base e is also secured to an axle c<2> by a bolt l passing downwardly through the base e, a strengthening strip m, and the axle c<2>.
Patent GB-1223985-A (GB)
Title: Improvements in and relating to cooling components for furnaces
Inventor: ANDONIEV SERGEI MIKHAILOVICH
IPC: C21B7/10
Filed: 1969-05-20
Abstract: 1,223,985. Blast furnace cooling blocks. VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY I PROEKTNY INSTITUT PO OCHISTKE TEKHNOLOGICHESKIKH GAZOV, STOCHNYKH VOD I ISPOLZOVANIJU VTORICHNYKH ENERGORESSURSOV PREDPRIATY CHERNDI METALLURGII. 20 May, 1969, No. 25656/69. Heading F4B. A cooling component for a blast furnace or a cupola furnace comprises an iron block formed on one face with parallel ribs enclosing lines of bricks separated from said ribs by asbestos gaskets. The block incorporates cooling tubes. The component is produced by laying the tubes, bricks and gaskets in a mould and filling it with molten iron.
Patent GB-303194-A (GB)
Title: New or improved releasing apparatus for use in starting the competitors in races
IPC: A63K3/02
Filed: 1927-09-29
Abstract: 303,194. Bradley, J. Sept. 29, 1927. Starting-devices for dog and other animal races.-Handicapping means comprises an electromagnetic or mechanical retaining device for the door of each compartment and common means for releasing the retaining devices simultaneously or in any desired sequence, the time intervals being adjustable. Each compartment 2 has a door 4 hinged at 5 and having a metal armature plate 7 which keeps the door closed against a spring 11 as long as the magnet 9 is energized. The spring 11 acts through a bell crank 16, 19 pivoted at 17 which has teeth 20 co-acting with a slotted member 21 attached to the door, so that as soon as magnet 9 is deenergized the arm 19 raises the door and the teeth 20 maintain it raised and prevent oscillation of it. The magnets 9 are normally energized and are de-energized at the appropriate times by the switching devices described below. Guards 22 separate the doors. In a modification the plate 7 is replaced by a mechanical finger which holds the) door closed until the magnet 9 is de-energized. Keyboard switches, retained set by detents; switches, quick-break ; electric motor actuation. -A switch 51, Figs. 7, 9 and 10, for the circuit of each door magnet has fixed contacts 58, 59 and a movable contact 57 on the spindle 56 which tends to rise under the influence of spring 69 but which is, maintained against contacts 58, 59 by a detent 63. The entire switch is movable along a slot 52 according to the time at which it is to be broken. A screwed spindle 30, driven through a clutch from an electric or other motor, moves a bar 43 so that rods 71 thereon trip the ends 68 of the switch detents 63 in turn, the switches 51 being broken and the doors thereby released in turn according to the positions of the various switches along their slots 52. A spring finger 44 and knob 46 allow the bar 43 to be started by the screw 30 from various points. When the bar 43 reaches the end of its travel it automatically breaks the clutch for the screw 30. In a modification switches are spaced along the track and are operated in turn by the lure-carrying arm. Rotary distributors; timing devices.-In a further modification a cylindrical casing 89, Fig. 12, has slots 90 in each of which is adjustably mounted a switch 91 with contacts 92 which are bridged at the correct time by a common contact bar 95 on an insulating drum 94 driven at a known speed. When a pair of contacts 92 are bridged, they short circuit the door magnet 9, Fig. 2, to release the door.
Patent GB-1432044-A (GB)
Title: Method and apparatus for severing a web
IPC: B26D1/40
Filed: 1973-05-30
Abstract: 1432044 Binding webs EASTMAN KODAK CO 30 May 1973 [30 May 1972] 25761/73 Heading B8T [Also in Division B5] A method of severing a web 10, Fig. 1, fed over a winding drum 24 to terminate formation of a first roll 12, Fig. 2, wound at station B and transfer the severed leading end on to a rotatable core 14 to form a second roll comprises the steps of moving said core 14 from the transfer station A to the winding drum 24 to form a nip through which the web passes, driving the core to bring it up to the web speed, positioning a tear strip 40 having a greater strength than that of the web and feeding said tear strip into the nip, whereby a leading edge 44 adheres to the core and a central adhesive portion severs the web along leading edge 45 of the strip and winds the leading end of the web on to the core. The tear strip is carried by a support sheet 48 to which the strip is attached by an adhesive having a lower adhesion to the sheet 48 than the strength of adhesion of the strip 40 to the web 10. The sheet 48 is carried on an orthogonally movable table 52, which is moved axially with respect to the drum 24 to dispose the sheet below the web 10 and then radially towards the nip to feed the preferably overhanging sheet 48 into the nip. The tear strip 40, Fig. 6, is made of polyethylene terephthalate and is coated on both sides with differently strong adhesives, the adhesive with the weaker bond being used to attach the strip to the carrier sheet 48. A leading portion 44 attaches an associated tear strip end to the core. In a modification two strips are used in a V-shaped formation and the free ends of the strips are provided with two portions (44<SP>1</SP>, Fig. 7).
Patent GB-887636-A (GB)
Title: Railway vehicle truck
Inventor: DRIEMEYER GEORGE FRED
IPC: B61F3/06
Filed: 1959-07-27
Abstract: 887,636. Railway vehicle undercarriages. GENERAL STEEL INDUSTRIES Inc. July 27, 1959, No. 25763/59. Class 103(6). In a three axle motor driven railway vehicle truck, the motors 21, 41, 45, Fig. 1, all face in the same direction with nose portions supported from frame transoms 12, 13 and 11, respectively, and the vehicle body U, Fig. 2, is supported through members 29, 43, 43 at three points on the truck, viz. a centre bearing plate 28 on a bolster 25 carriedthrough rubber-metal sandwiches 24, Fig. 3; on the transom 12, and horizontal bearing surfaces 42 on wheel pieces 9 of the frame 8 which is supported on drop equalizers 6, 7 through springs 14, the bolster being movable transversely of the truck by the yielding of the sandwiches 24 in shear. The ends of the bolster are bifurcated at 30 to receive vertical wheel piece abutments 33, wear plates 31, 32 being provided on the bolster and abutments. Between the bifurcations, the ends of the bolster are spaced inwardly of the frame 8 from the abutments and provided with rubber pads 35 to prevent metal to metal contact of the bolster and abutments during transverse movements of the former. The transoms 11, 12 are provided with brackets 44, 19 and the transom 13 with a swing link supported element 39, to receive the nose portions of the motors. Snubbing devices are provided between the wheel pieces and equalizers and a snubber 36 is also provided between the bolster and transom 12. In a modification the transom 12 is replaced by two transoms each mounting at its ends, rubber-metal sandwiches for the bolster, which has a vertical portion disposed between the transoms with the interpositioning of wear plates, as described with reference to Fig. 6 (not shown). The vehicle body portions 43 swivel about the centre bearing plate 28, as they slide on the surfaces 42. Reference has been directed by the Comptroller to Specification 777,435.
Patent GB-285527-A (GB)
Title: Improved roller for use on the groundrope of a trawl net
IPC: A01K75/06
Filed: 1926-10-16
Abstract: 285,527. Cook, E., Taylor, W., and Sorensen, S. W. Oct. 16, 1926. Trawling-gear.-Bobbins for ground-ropes are constructed from two flanged end-discs 3 and a cylindrical ring 5 extending along the length of the shell. An inner bush 9 extends between the end discs. The various members may be electrically welded together. The, casing is filled with wood or other buoyant material. The discs may be convex, flat or concave.
Patent GB-522305-A (GB)
Title: Improvements in or relating to the cooling of beer or other beverage
IPC: F25D31/00
Filed: 1939-09-07
Abstract: 522,305. Cooling beer &c. BLICK, E. L., and AUTOMATIC SCALE CO., Ltd. Sept. 7, 1939,.No. 25793/38. [Class 64 (iii)] Beer or other beverage is cooled by passing it through the space 4 between a casing 1 and one or more inner tubes 2 to which a refrigerant is supplied in a liquid state and withdrawn as a vapour. The inner tubes are extended at both ends beyond the casing and are provided with detachable closures 11 which carry the inlet and outlet connections 12, 13. The inner tubes may contain fillers.
Patent GB-537008-A (GB)
Title: Improvements in press-button operated tuning devices for radio receiving apparatus
IPC: H03J5/12
Filed: 1939-09-14
Abstract: 537,008. Tuning wireless receivers. FABBRICA ITALIANA MAGNETI MARELLI. Sept. 14, 1939, Nos. 25863 and 25864. Convention dates, Sept. 16, 1938 and June 12, 1939. [Class 40 (v)] [Also in Groups XXXV and XXXVI] In radio receivers of the type in which the receiver is pre-tuned to a number of selected stations by sets of coils each coil having within it a magnetic core the pre-set tuning being effected by relative adjustment of the cores and coils and the required set of coils for the particular station desired being thrown into circuit by the operation of a push button the coils are mounted on insulating sleeves supported in a box in which the whole tuning unit is contained and in which screws are journalled, the displacement of the cores being effected by rotation of the screws. The cores 10 slide in guiding sleeves 7 around which the coils 8, 9 are wound. The cores are adjusted individually by rotating screws 15 in the arms 14 of a slide which is itself adjustable by rotating a threaded screw 12 by means of its head 121. The required set of coils is thrown into circuit by depression of a rod 19 by means of its push button 16 so as to close the switch 17, 18. In a modification, Fig. 6, the cores 10 are connected by means of resilient rods 31 to screw threaded sockets 32 formed in the arms 341 of a slide 34 adjustable by means of a nut 13 on a threaded rod 12. The slide 34 is provided with a flattened extension 36 projecting through an aperture 37 the projecting portion being calibrated so that the setting of the cores may be determined.
Patent GB-698263-A (GB)
Title: Scraper chain conveyors
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G19/28
Filed: 1949-11-14
Abstract: 698,263. Endless conveyers. MINING ENGINEERING CO., Ltd. Nov. 2,1950. [Nov. 14, 1949] No. 25957/50. Divided out of 698,239. Class 78 (i). A scraper chain conveyer comprises sections which have separable top and bottom pans and which are interconnected by locking bars having portions of reduced cross-section which bars are movable longitudinally of the conveyer to lock together or release lugs extending from adjacent aligned pan sections. One suitable embodiment is the construction disclosed in Specification 698,239 which is there claimed differently. In another form allowing of the removal of any single upper trough section and thence any single lower section from the assembled conveyer, a U-bar 2 is secured to one end of each lower section 1 and the ends of the U-bar are turned outwards and cut away at the side adjacent the end of the section to form lugs 3. A U-bar 4 of heavier section is secured to the opposite end of each lower section and carries at each side a cradle 5 having two transverse pierced lugs 6, 7. The part of the cradle projecting from the section is recessed deeper than the rest to receive the lug 3 of the adjacent section, which is lowered into place. The lower sections are thus aligned and separately removable. Each end of each upper trough section carries a transverse bar 12 the ends of which are formed as lugs matching the lugs 3. After assembly of the scraper chain in the lower trough the upper sections are laid in place with the ends of bars 12 resting in the cradles, one of the bars 12 at each joint resting on the lugs 3, Fig. 4. The whole structure is locked by the sliding bolt 8 which passes through the pierced lugs 6, 7 and carries horizontal keys 9, 10 which are brought into and out of register with the ends of bars 12 in the extreme positions so that in the locking position keys 9, 10 lie above the ends of bars 12 and prevent their removal. It is only necessary to unlock the joints on one side to remove a section as the upper trough section can then be tilted, and withdrawn laterally and the corresponding lower section removed at one end in similar manner. The sheet metal forming the actual troughs is bent over the bars 2 and 12 at the ends of the sections to ensure a smooth joint. Where the upper trough sections comprise separable side pieces 15, Fig. 6, these are attached to the lower trough sections by lugs 16 thereon engaging in brackets 15 on the lower sections at points adjacent the members 2 and 12. Specification 666,751 also is referred to.
Patent GB-1110017-A (GB)
Title: Improvements in and relating to light-sensitive plates and planographic printing plates produced therefrom
IPC: G03F7/021
Filed: 1965-06-18
Abstract: 1,110,017. Photo-sensitive materials. AZOPLATE CORPORATION. June 18, 1965 [June 18, 1964J, No. 25969/65. Heading G2C. A photo-sensitive material comprises an aluminium support treated with an alkali metal silicate and coated with a layer containing a watersoluble diazomium salt of a p-amino diphenylamine or a condensation product thereof with formaldehyde, and either a water-insoluble novolak resin or a resin containing one or more types of groups which impart alkali-solubility. Specified resins are styrene copolymers containing carboxyl groups, polyvinyl formal or butyral, phthalic acid ester resins, maleate resins, alkyd resins, colophony and polyacrylic acid resins. The material is imagewise exposed and developed by washing with water to leave a negative printing plate.