baber/WOPTO huggingface dataset:
Patent GB-1218386-A (GB)
Title: Improvements in or relating to blades for helicopters and like rotors
Inventor: CHEESEMAN IAN CLIFFORD
IPC: B64C23/00
Filed: 1968-03-22
Abstract: 1,218,386. Controlling spanwise flow over helicopter blades. MINISTER OF TECHNOLOGY. 14 March, 1969 [22 March, 1968], No. 13885/68. Heading B7W. [Also in Division F2] A helicopter rotor blade 1 has a slot 2 extending round part of its periphery in a chordwise direction to discharge a sheet of pressurized gaseous fluid to form a fluid fence to control spanwise flow along the blade. In one embodiment, Figs. 1, 2, the slot 2 extends from the trailing edge to slightly forward of the upper edge and the air is discharged radially. Air is also discharged, preferably independently, over the rear surface of the blade through a spanwise extending channel (9), Fig. 3 (not shown), on the upper part of the blade surface to generate lift. Alternatively a row of discrete holes may be used instead of a slot. In the second embodiment, Fig. 4, two semi-circumferential shrouds 10, 12 define slots 11, 13 separated by baffles (14, 15), Fig. 5 (not shown), the upper 11 discharging fluids in an outwards spanwise direction and the lower 13 discharging inwards. The upper shroud 10 may be omitted and the slot 2 blanked off completely in that portion so that blowing only occurs inwardly, or the circumferential extent of the slots might be varied. In the embodiments described the blowing is at the tip but it could also take place at other positions along the blade. The invention is also applicable to elliptical or conventional aerofoil crosssection surfaces.
Patent GB-293944-A (GB)
Title: Improvements in and relating to devices for hanging pictures and like articles on walls
IPC: A47G1/16
Filed: 1927-05-24
Abstract: 293,944. Pollard, A. F. C. May 24, 1927. Pictures &c., hanging on walls.-Pictures &c. are suspended from two horizontally spaced nails in a wall by means of an attachment plate having a vertical slot b at one end and a horizontal slot or edge a at the other end, the plate being secured to the picture frame by a pivot screw c and a fixing screw d<1> to permit adjustment in a vertical direction. The plate may be in two slidably connected portions, Fig. 7, to permit horizontal adjustment, and for large pictures the vertical and horizontal slots can be formed in separate members A, B, Fig. 4, secured to the frame in spaced relation, either or both members being pivotally, or slidably and pivotally mounted.
Patent GB-1155622-A (GB)
Title: Improvements in Wired Broadcasting Systems and apparatus therefor
Inventor: GARGINI ERIC JOHN
IPC: H04N7/10
Filed: 1966-03-30
Abstract: 1,155,622. Wired broadcasting; colour television. COMMUNICATIONS PATENTS Ltd. 30 March, 1967 [30 March, 1966], No. 13993/66. Headings H4F and H4R. In a colour television wired distribution system the signal fed to the system comprises a modulated carrier brightness information signal, a suppressed carrier colour information signal in respect of a first and second colour information components in quadrature, and a pilot signal which has a frequency equal to a sub-multiple of the suppressed carrier and which is amplitude modulated by the first colour information component. At the receiver the first colour component is derived from the pilot signal by an envelope detector while the second colour component is derived from the supressed carrier colour information signal using a reinserted carrier derived from the pilot signal. The figure shows an embodiment for PAL system signals which are received from a conventional broadcast system by aerial 15 and applied to a receiver 16 from which the brightness information and supressed carrier colour information signals are applied to a modulator 20 fed with a 5.4 Mc/s. carrier from oscillator 21. The resulting signals are applied to the line via a vestigial sideband filter 23, a gate circuit 24 and a mixture circuit 25. In addition gate 24 is enabled by signals from the receiver on line 19 to pass colour burst signals, of a frequency of 9.83 Mc/s. equal to the suppressed carrier frequency, from gate 24 to a comparator 27, where they are compared with the output of a frequency tripler 28 fed with the output of pilot oscillator 29, to derive a.f.c. signals used to control the pilot frequency to be one third the suppressed carrier frequency, i.e. 3.28 Mc/s. The pilot signal is also fed to a modulator 31 where it is amplitude modulated with one colour information component from receiver 16 and applied to the line via mixer 25. At the receiver 6 the brightness component is derived via filter 33 amplifier 34 and detector 35. One colour component is derived by filter 39 amplifier 40 and detector 41 from the pilot signal, while the other colour component is derived from the suppressed carrier colour signal which is filtered at 37 and synchronously detected in 38 using a reinserted carrier derived from the pilot signal via a narrow pass band filter 45, which eliminates the modulation sidebands, amplifier 46, and frequency tripler 47. The level of the detected pilot signal may be used to apply a.v.c. to the system.
Patent GB-496027-A (GB)
Title: Improvements in or relating to directive radio antenna systems
IPC: H01Q3/32
Filed: 1938-05-11
Abstract: 496,027. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. May 11, 1938, No. 14047. Convention date, June 23, 1937. [Class 40 (v)] Relates to an aerial array of the kind described in U.S.A. Specification 2,041,600 in which the directive response of the system as a whole is controlled by means of phase-shifters so as to follow changes in the angle of arrival of a radio wave. According to the invention, a monitoring circuit, which is continuously operated, explores the region from which waves are arriving and sets the aerial to follow the direction of the strongest incoming signal ; alternatively, it selects an optimum direction and. aligns the aerial response accordingly. As shown in Fig. 1, the signals received by the aerial unit 10 are applied to three sets of phase-shifters 21, 22 ; 31, 32 ; and 41, 42 ; of the kind described in U.S.A. Specification 2,004,613. The signals from the other aerial units 11, 12, are similarly treated. The phaseshifters 41, 42, 43 form the monitoring or exploring system. The direction of maximum response of the aerial system is controlled through shafts 20, 30, and the resulting output is transmitted through amplifiers, detectors, and the two " service branches " so marked, to a common output circuit 60. The motor 45 of the monitoring shaft 40 is continuously rotated so as to sweep over the whole, or a selected part, of the angular range of the system, and may indicate the resulting field-pattern in a cathoderay tube (not shown). The output current from the monitoring amplifier 56 is then applied through monitoring circuits 100, 300, to the corresponding phaseshifters 31 and 32, so as automatically to adjust the major lobe of the aerial system to the ascertained optimum direction. The " steering " is effected by synchronouslydriven commutators which apply charges, proportional to the output from the monitor amplifier 56, to a series of condensers. These, in turn, control valve relays through which the phase-shifters 21, 22 and 31, 32 adjust the directive response of the aerial array 10 .. 12 and keep it in step with the conditions indicated by the monitor. A continuous tape record of these conditions may be made by the monitoring-apparatus.
Patent GB-364989-A (GB)
Title: Process for the after treatment of diazo type prints on films
IPC: G03C5/18
Filed: 1931-05-12
Abstract: 364,989. Photographic diazotype processes. KALLE & CO. AKT.-GES., 23, Rheinstrasse, Biebrich, Wiesbaden, Germany. May 12, 1931, No. 14061. Convention date, May 28, 1930. [Class 98 (ii).] Films sensitized with diazo compounds are treated after development with steam at a temperature above 70 C., for example, from 70 C. to 150C. or at corresponding temperatures under elevated or reduced pressures. In some cases vapours, e.g. of acetic acid, may be mixed with the steam. The temperature may be adjusted so that the speed of treatment is adapted to the speed of development and the processes can be carried out continuously. Examples are given of (1) diazo-1 : 2 : 4-aminonaphthol sulphonic acid, resorcine and nickel sulphate developed with ammonia and (2) diazo- 1-benzoylamino - 2 : 5 - diethoxy - 4 - aniline developed with a solution of resorcine and phloroglucinol in alcoholic ammonia. A double jacket pipe in which the film travels in the opposite direction to the steam may be used. Specifications 280,593, 287,063, and 306,408, [all in Class 98 (ii), Photographic processes &c.], are referred to.
Patent GB-166413-A (GB)
Title: Improvements in or relating to sound transmitting instruments
IPC: H04R1/08
Filed: 1920-05-25
Abstract: 166,413. Marr, A. May 25, 1920. Hearing-appliances.-Relates to sound concentrators, e.g. of the kind described in Specification 142,218, [Class 40 (iv), Telephones &c.], in which a mouthpiece or the like 3 is provided with a cap 2 having a restricted aperture 6. Fig. 1 illustrates the invention as applied to a telephone mouthpiece, but an ear-trumpet may be similarly constructed. A partition 7 of aluminium, vulcanite, or the like is provided at the widest part of the mouthpiece and pierced with holes 11, the collective area of which is greater than the area of the aperture 6. The partition may be either flat or dished, and the grid 12 may be dispensed with. The cap 2 is screwed or cemented, with or without packing, to the rim of the mouthpiece 3. It may be dished or flat on its outer face 5, and is dished internally and rounded at 4. An ear-trumpet made on the above principles is provided with an external truncated cone for insertion in the ear or with a flat flange for holding against it.
Patent GB-1146504-A (GB)
Title: Outer garment
IPC: A41D1/22
Filed: 1966-03-30
Abstract: 1,146,504. Wearing-apparel. C. H. MARTIN [trading as JACQUES ESTEREL]. 30 March, 1966 [14 April, 1965], No. 14164/66. Heading A3V. An outer garment such as a dress or frock comprises body portion A including a back and sides and having spaced front edges to which a panel C is detachably secured by e.g. buttons, press studs or sliding clasp fasteners. The appearance of the garment may be changed by replacing the panel C. An alternative panel (Fig. 4) comprises a collar (E) and a pleated lower portion (F). The size of the garment is determined by the dimension of the portion A and changing the front panel does not vary the enclosed volume.
Patent GB-720420-A (GB)
Title: Coin freed mechanisms for prepayment gas and electricity meters
Inventor: ALEXANDER ARTHUR
IPC: G07F15/02
Filed: 1952-06-05
Abstract: 720,420. Prepayment mechanism for meters. PARKINSON & COWAN, Ltd. Sept. 1, 1953, [June 5, 1952], No. 14237/52. Class 27. Coin-freed mechanism for prepayment meters comprises a lever 1 pivotally mounted on one side of a coin pocket 3 and adapted to project through the plate 6 to which the coin pocket is secured to engage one of several recesses 7 in the back of the scale plate 8, thereby locking the two plates together and preventing the coin pocket from rotating, means being provided for maintaining the lever out of the locking position. The lever 1 is loaded by a light spring 17, and in the position shown in Fig. 2, is held out of its locking position by the coin cam 10 which is loaded by a strong spring 18. When a coin is inserted, the coin cam is displaced and the lever 1 moves to its locking position. A shutter I is now rotated by a handle 12 and covers the coin slot 3. Further rotation causes a cam surface 16 to engage the lever 1 and rock it from its locking position and a projection 15 to engage a driving peg on the plate 6 which can now be rotated throughout its complete traverse of prepayment. A second driving peg diametrically opposed to the first permits the shutter to rotate the pocket back to its initial position after the coin has been discharged. If reversal is attempted before discharge the shutter releases the lever 1 which locks the pocket until it is again rotated in the purchasing direction.
Patent GB-1423021-A (GB)
Title: Methods and apparatuses for correcting coincidence count inaccuracies in a particle analyzer
IPC: G01N15/14
Filed: 1973-03-23
Abstract: 1423021 Particle analysis COULTER ELECTRONICS Ltd 23 March 1973 [27 March 1972 26 Sept 1972] 14242/73 Heading G1N [Also in Division G4] The invention relates to the automatic STATISTICAL CORRECTION of the count from particle analysis apparatus, for errors due to coincidence of particles in the counting zone, by deriving TWO PARTICLE-PULSE COUNTS from the sample and entering them in a suitably programmed computor. The two counts may be obtained from (i) Two (or more) apertures having a known ratio of their "aperture critical volumes" Fig. 2 (not shown) (ii) two (or more) dilutions of the sample fed through a single aperture Fig. 3 (not shown) (iii) an artificial second count generated by delaying the pulse-train and adding it to the original train before counting Figs. 4 and 5 (not shown) (iv) a photo-electric sensor with a variable width light beam adjusted to provide two (or more) sensing zone volumes. Alternatively the apparatus could be programmed to determine a function used in the calculations and termed the CRITICAL VOLUME. The Specification derives the equations which the computor must solve for each of the four methods.
Patent GB-198206-A (GB)
Title: Improvements in machines for reeling or making skeins of silk or other thread
IPC: B65H63/08
Filed: 1922-05-20
Abstract: 198,206. Rushton, H. May 20, 1922. Stop-motions.-In a measuring stop-motion for a reeling or skeining machine, a rotary dial wheel D having a calibrated face and a toothed periphery is driven from the swift by means of a shaft e and worm E, which are mounted on a spring-controlled pivoted arm F so that the worm can be readily disengaged from the dial wheel. When the required length of thread &c. has been reeled, an adjustable lug h on the back of the wheel D turns a lever K engaging the knock-off lever B<1>. The wheel D has a stop d adapted to engage a pawl d', thus facilitating the operation of bringing the zero mark on the dial wheel D opposite the fixed pointer L after each doffing of the reel.
Patent GB-713444-A (GB)
Title: Improvements in or relating to electromagnetically operated relays
Inventor: HOUGHTON ERIC INNES
IPC: H01H50/34
Filed: 1951-06-16
Abstract: 713,444. Electromagnetic relays. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. June 9, 1952 [June 16, 1951], No. 14320/51. Class 38(5) In a relay designed to eliminate contact bounce and in which the armature 20 is mounted on a blade spring 15 and pivots about one pole of a U-shaped electromagnet 16, the moving contact is mounted on a separate spring 26 which engages a slot in the end of an insulating member 19 carried by the armature. The contact 26 moves between a fixed contact screw 28 and a contact carried on a J-shaped spring 31 the position of which is determined by a screw 34. The spring 26 is a light spring and is biased by a stronger spring 27 and the spring 15 is pressed against the pole 16 by a spring 21 adjustably tensioned by a screw 22. Contact bounce on release may be further reduced by short-circuiting the left-hand coil of the electromagnet 16, Fig. 1. Specification 405,436 is referred to.
Patent GB-689702-A (GB)
Title: Improvements in or relating to tent roofs
IPC: E04H15/32
Filed: 1950-06-08
Abstract: 689,702. Tents. SILVER & EDGINGTON, Ltd. [trading as EDGINGTON (SILVER & EDGINGTON, Ltd.), B.], and ATKIN, A. E. June 7, 1951 [June 8, 1950], No. 14379/50. Class 20(i) A tent roof comprises a downwardly inclined water-proof member 44, e.g. of canvas, anchored at least at its upper edge to ridge-supporting rafters 12, 13, a downwardly inclined upper roof portion (not shown) overhanging, and spaced from the member 44, the lower edge of the upper member being supported, e.g. through tie ropes fastened to an anchoring tube 38, by the lower ends of beams 39 secured at their upper ends by connecting means, e.g. clips 40, 41, to the rafters 12, 13 at a point above the upper end of the member 44. The member 44 hence intercepts drops from the upper member. Each pair of tubes 12, 13 forming a rafter is plugged at its upper and lower ends into sockets 19 fixed to transverse beams suporting guttering 45. The member 44 is connected to wooden strips 42, 43 extending across the rafters. In a modification to improve ventilation (Fig. 4) the anchoring tube 70 is mounted near the top of the tent, the upper member 72 being confined to the area adjacent the ridge of the tent. The canvas water-proof member 74 is secured to a tubular portion 73 at its upper edge and is conventionally secured at its lower edge. Specification 689,700 is referred to.
Patent GB-713000-A (GB)
Title: Improvements in the production and use of solutions of acrylonitrile polymers
Inventor: DOWNING JOHN
IPC: C08J3/02
Filed: 1950-06-29
Abstract: Solutions suitable for the manufacture of fibres and films comprise an acrylonitrile polymer dissolved in a mixture of nitromethane, water and formic acid and/or oxalic acid.  The acrylonitrile polymer may be polyacrylonitrile or copolymers of acrylonitrile with methacrylonitrile, vinyl chloride, vinylidene chloride, vinyl acetate, methyl acrylate, phenyl acrylate or styrene.  In the case of oxalic acid, the oxalic acid and water may be present as oxalic acid dihydrate.  The fibres and films may be made by dry or wet-spinning or wet-casting techniques such as those described in Specification 712,984, and the fibres oriented by stretching, e.g. as described in Specification 636,476.  The compositions may also be used as coatings.
Patent GB-390966-A (GB)
Title: Improvements in and relating to the moulding of insulating caps for joining electricconductors
IPC: B28B11/08
Filed: 1932-05-20
Abstract: 390,966. Moulding insulating-caps. NAAMLOOZE VENNOOTSCHAP ELECTRICITEITS MAATSCHAPPIJ ELECTROSTOOM, Rotterdam, and HUIZINGA, H., 5, Blauwe, Kamerlaan, The Hague, both in Holland. May 20, 1932, No. 14417. [Class 87 (ii).] Insulating-caps 2 are made by filling a mould 1 with insulating material in powder or tablet form, pressing by a die 4 having a mandrel end 6 on which a helical wire is wound, and baking the cap so that the wire is simultaneously embedded in the cap, before the die is removed. The cap may be subsequently removed by an ejector 3, or, if a fixed mould base is employed, the cap may be removed with the die and then unscrewed therefrom. If desired, the funnel-shaped entrance to the cap may be similarly threaded.
Patent GB-1347766-A (GB)
Title: Cine projectors
IPC: G03B21/32
Filed: 1971-05-12
Abstract: 1347766 Cinematography AGFAGEVAERT AG 12 May 1971 [21 May 1970] 14438/71 Heading G2E A cine projector has a housing 1 including a recess 5 which can receive a film cartridge 6 (Fig.1) or film reel 16 (Fig.4) which can be of several sizes. As shown in Fig.1 when the cartridge 6 is in the recess 5 the film 16<SP>1</SP> can be stripped from its reel 7 by the device 8 and fed through a path 9, past the guide 22 and gate 4 to take up reel 11. Film rewind is performed by friction drive roller 13 on pivoted arm 14 contacting the reel 7. When a reel 16 is placed in the recess 5, a spindle 17 is provided by pressing it across the recess against the action of the spring 18 until locking member 19 engages groove 17a. The insertion of the spindle 17 also depresses arm 24, which pivots about the point 25, from the position shown in Fig.1. The end 24a of the arm 24 thus deflects the guide 22 in a clockwise direction about its pivot 23 so as to open aperture 21 through which film from the reel 16 can be manually directed to the gate 4. The film rewind roller 13 operates similarly with the reel 16 at the end of the projection sequence.
Patent GB-637116-A (GB)
Title: Improvements in electrical tuning arrangements
IPC: H03H5/00
Filed: 1947-06-02
Abstract: 637,116. Radio receiving sets. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 2, 1947, No. 14516. Convention date, May 31, 1946. [Class 40 (v)] [Also in Group XL (b)] A high-frequency electrical tuning arrangement comprises a resonant trans - mission line comprising a pair of branches each including a series of impedances, and rotatable short-circuiting means for varying the electrical length of the line. Fig. 1 shows the R.F. amplifier, mixer and oscillator of a superheterodyne receiver. The incoming signal is applied to the grids of the double-triode valve 18 of the push-pull R.F. amplifier, A.V.C. being supplied from a source 30, and the anodes are connected to a balanced line 10 comprising tunable inductances 38 and 39, inductances 46 and 47 which may be in the form of a metallic bar as shown in Fig. 5, relatively large tunable inductances 57 and 58 and inductances 66 which may be of binocular form as described in Specification 615,106, [Group XXXV]. A similar line 12, which is provided with adjustments for each inductance on one side of the line, is connected to the anodes of the double-triode oscillator valve 76, the inductances 92 being adjustable by means of a screw 214, Fig. 7, which is preferably insulated from the portion 92, and the inductances 97 being adjustable by means of brass cores 221. The grids of the double-triode mixer valve 114 are connected to a line 11 similar to line 10, the anodes being connected together to an I.F. transformer 122. A variable condenser 152 in series with an inductance 154 connected to the line 11, attenuates undesirable signals in the I.F. band. Coupling between the resonant lines 10, 11 and 12 is determined by their spacing, additional coupling between lines 11 and 12 being provided by loop 142, and between lines 10 and 11 by a single coupling condenser 144 and a pair of coupling condensers 146, 148. Mechanically coupled shorting bars 53, 129 and 94 provide for the selection of 13 radio frequency signals or channels, fine tuning control being effected by condensers 108 and 109 connected to the tuning cores of the coils 79, 81 respectively of the oscillator line 12. The transmission lines 10, 11, 12 are tuned by the operation of a rotary switch by a single control, the tuner assembly, Fig. 2, comprising two end-plates 161, 162, joined by three insulating strips 163, 164, 165, supporting insulating stator plates 191 ... 196 respectively carrying lines 10, 11 and 12. A shaft 179 carries a number of insulated discs, Figs. 5 and 7, each provided with metal rings 204 and contact tongues 203 for shorting the lines to vary the tuning. The fine tuning condensers 108, 109, Figs. 9 and 10 (not shown), are driven through friction discs 251, 253 by a hollow shaft 248 journalled over the shaft 179.
Patent GB-166421-A (GB)
Title: Improvements in concrete mixers
IPC: B28C5/14
Filed: 1920-05-28
Abstract: 166,421. Tonkin, G. A. May 28, 1920. Stationary batch-mixers with rotary stirrers.- Relates to a concrete batch-mixer having a stationary mixing-vessel which can be tilted to discharge the contents and is provided with, stirrers carried on an horizontal axis. The vessel, which is preferably semicylindrical, is open at the top and is mounted on trunnions b arranged near the upper edge of the vessel and at the ends of one side thereof. The vessel normally rests on a part d of the frame, but can be raised into the position shown in dotted lines in Fig. 2 by a winch connected at i by a chain or rope g to the free side of the vessel below its upper edge and resting in a guide k. The chain passes over a guide-pulley h mounted on a standard i. The stirrers are mounted on an axis m driven by gearing r, s, &c. and consist of helical bars o of opposite hand carrying a series of prongs p. This arrangement tends to drive the material being mixed from the ends to the centre of the vessel. The gear-wheels r are coaxial with one of the trunnions so that the tilting does not affect the gearing.