baber/WOPTO huggingface dataset:
Patent GB-1398906-A (GB)
Title: Erection of gyroscopes
IPC: G01C19/46
Filed: 1972-07-07
Abstract: 1398906 Gyroscopes SOC DE FABRICATION D'INSTRUMENTS DE MESURE 7 July 1972 [8 July 1971] 32022/72 Heading G1C Apparatus for erecting a gyro-vertical of an aircraft in such a way as to ensure that accelerations due to changes of aircraft heading do not adversely affect the erection comprises an accelerometer 3 sensitive to transverse accelerations of the aircraft and electrically connected to a torque motor 2 acting on the gyro-vertical, and a course sensing device 11 which is electrically connected to cutoff the torque motor 2 from the effects of the accelerometer 3 when accelerations due to turning of the aircraft exceed a predetermined value. As shown, the accelerometer 3 is connected to the torque motor 2 by way of an amplifier 4, clipping circuit 5 and normally closed switch 6 which are in parallel with both an upper threshold device 7 and OR gate 8 and a lower threshold device 9 connected to operate a switch 12, the switch 12 being connected via a delay circuit 10 to the course sensing device 11. In operation, the course sensing device 11 senses any change in heading and provides a signal to the delay circuit 10 which, only when the transverse acceleration sensed by the accelerometer 3 is between two threshold values as determined by devices 7 and 9, passes a signal after a delay via the switch 12 and OR gate 8 to open the switch 6 and thereby render ineffective the torque motor 2. Should transverse accelerations occur above an upper threshold as determined by device 7, the switch 6 is immediately opened via OR gate 8 to render the torque motor ineffective whereas with accelerations below both threshold values the accelerometer is continually operatively connected through the switch 6 to the torque motor 2. The clipping circuit limits the torque provided by the motor 2. The device 11  may comprise a pair of contacts (15, 16) Fig. 2 (not shown) movable under the influence of aircraft movement to contact a fixed contact (19).
Patent GB-262948-A (GB)
Title: Improvements in apparatus for the combustion of liquid fuel
IPC: F23C99/00
Filed: 1925-12-19
Abstract: 262,948. Becker, E. Dec. 19, 1925. Open tray burners; liquid fuel supply.-In a liquid fuel combustion apparatus comprising an annular oil well d supplied with fuel through nozzles a for combustion in a chamber g, a cover e<1> over the oil well and an extension f at the top of the oil well are formed with registering gaps, so that by turning the cover e<1> passages of variable size are formed for admitting air to the oil well for burning off the residuals tending to accumulate therein. Primary and secondary air is admitted to the flame through a grid or grating k supported by the cover e<1>. Secondary air is also admitted to the flame through an opening p below the oil well d. The opening p may be regulated by means of a vertically adjustable ring r. The air is heated by passage through a casing o surrounding the combustion chamber q. A bent overflow pipe e is provided on the oil well d for maintaining the fuel level constant. The oil supply to the well d may be regulated automatically, this regulation according to the Provisional Specification being effected by means of a valve operated by a float arranged in a chamber either communicating with the oil well or receiving the overflow from the pipe e.
Patent GB-482609-A (GB)
Title: Improved fittings for road drainage gratings
IPC: E03F5/046
Filed: 1936-11-24
Abstract: 482,609. Drainage. BROAD & CO., Ltd., and MAJOR, J. Nov. 24, 1936, No. 32159. [Class 33] A device for fitting beneath a road-drainage grating and particularly for use when the design of a road is altered, comprises a shallow pan having inner surfaces sloping down towards the lower part of an outlet made in the side wall of the pan. The pan 11 is cast, preferably in a single piece, in iron or earthenware, and is formed with a rim 18 on which the grating can seat, with a bottom sloping towards the slightly downwardly sloping spigot 12, with strengthening thickenings 14 on each side of the spigot, and with downwardly extending supporting webs 15 extending to the corners of the rim 13 opposite the spigot. When a road is widened the pan may be placed in the new gutter line and a drain-pipe may connect the spigot 12 to the old gully. More than one pan may be connected to the single gully. Holes may be provided in the rim 13 for securing bolts for the grating.
Patent GB-175078-A (GB)
Title: Improvements in and relating to grand pianos
IPC: G10C1/00
Filed: 1920-11-15
Abstract: 175,078. Alexander, A. E., (American Piano Co.). Nov. 15, 1920. Pianoforte cases and framing.-In a grand piano, the rast or skeleton frame, sounding-board, and musical instrumentalities are assembled and thereafter applied to the separately constructed and finished case rim, the rast being rigidly connected along its outer face to the inner face of the rim. In the construction shown, the rast 6 is supported on and secured to an inwardly projecting rib 3 provided on the case rim 2. Spacing- wedges 20 are .inserted, as shown, between the rast and the case rim and secured in position by wood-screws 21. In manufacturing the rim, the key-bed 4 and front bar 4<1> are secured thereto to brace the ends' and hold them in further spaced relationship.
Patent GB-766287-A (GB)
Title: Improvements in or relating to television cameras including optical filters
IPC: H04N5/225
Filed: 1954-11-08
Abstract: 766,287. Colour filters. FERNSEH GES. Nov. 8, 1954 [Nov. 6, 1953], No. 32242/54. Addition to 743,163. Class 97(1) A television camera includes in the imagt beam a variable-density optical filter formed by a layer of light-absorbing liquid of controllable thickness the layer being bounded by and its thickness determined by the separation of adjacent surfaces of two transparent members which are relatively movable to vary the separation, the surfaces being contained in a closed vessel filled with the said liquid. As shown between the objective 11 and photosensitive surface 12 of a television camera is placed an optical filter comprising a closed vessel 1 containing a lightfiltering liquid 2, and two glass prisms 3, 4 the latter being fixed to the vessel 1. The prism 3 is slidable on projection 9 on one wall of the vessel, being actuated by a rod 5, to vary the distance between the adjacent faces 7, 8 of the prisms and so varying the thickness of the liquid layer in the light filter. Both prisms may be movable or the prism 3 may slide along the face 8 of prism 4, the layer of liquid being' formed between the prism 3 and the wall of the vessel 1. In the modification shown in Fig. 4 the movable prism 3 is actuated by engagment of a rod 26 connected thereto with a spiral slot 28 in a rotatable member 24 and varies the thickness of two liquid layers formed between the surfaces 20, 21 and 22, 23 of the prisms. In a further modification the movable prism may be connected to a flexible part of the vessel 1 formed of thin glass moved by an external rod.
Patent GB-827852-A (GB)
Title: Improvements relating to helicopters
Inventor: CZERNIN ALEXANDER
IPC: B64C27/18
Filed: 1955-11-11
Abstract: 827,852. Gas turbine plant. FAIREY AVIATION CO. Ltd. Oct. 16, 1956 [Nov. 11, 1955], No. 32266/55. Class 110 (3). [Also in Group XXXIII] A gas turbine engine supplying driving gas to a helicopter rotor of the kind driven by ejection of the gas from nozzles carried on the rotor blades without further heating comprises a single compressor which supplies compressed air to a combustion chamber and also directly to a compressed gas duct communicating with the rotor, and means are provided for withdrawing hot air or combustion gases, or both, from the combustion chamber into the compressed gas duct to intermingle with the air already supplied thereto by the compressor. A compressor 5 driven by a two-stage turbine 4 supplies air through ducts 6 to a chamber 2a forming part of a compressed gas duct 2 surrounding a combustion chamber 3. Some of the air passes through an annular gap 2b between the duct 2 and the combustion chamber 3 and thence through holes 7 to a duct 1, the remainder being directed by baffles 12 to enter the combustion chamber 3 through holes 8. Further baffles 12 direct hot air or combustion products, or both, back into the duct 2 to mix with the unheated air. The duct 1 feeds the hot mixture to propulsion nozzles carried on the helicopter rotor blades.
Patent GB-340324-A (GB)
Title: Improvements in the production of artificial materials by wet spinning processes from solutions of organic derivatives of cellulose
IPC: D01D5/06
Filed: 1928-11-05
Abstract: For the wet-coagulation process for the manufacture of artificial filaments, threads, films &c. by the extrusion of solutions of cellulose acetate or other organic ester of cellulose or of cellulose ethers, there is employed a coagulation bath containing a relatively high proportion of solvent for the cellulose derivative.  The filaments &c. on emergence from the bath may be in so plastic a state that if brought together they will coalesce.  The following may be employed as non-solvents in the coagulation baths,-water; methyl and ethyl alcohol and their homologues; hydrocarbons such as benzene, toluene, gasoline and kerosene.  Organic solvents less volatile than the non-solvent media are preferably employed; for example, with water or alcohol as the non-solvent there may be used diacetone-alcohol, diethyl tartrate, mono- or di-acetin, and ethyl lactate; and mixtures of solvents of low volatility may be employed, or a solvent of high volatility such as acetone may be used in conjunction with a solvent of low volatility such as diacetone-alcohol.  The concentration of the solvent depends on the spinning conditions and the type of product desired, in the case of artificial filaments the concentration is higher according as the denier number of the filaments is lower; generally however concentrations of 25-65 per cent are suitable.  Before collecting the products, excess of solvent should be washed out or otherwise removed to prevent coalescence of the filaments, for example, by washing with water, salt solutions, or solutions of solvents of concentrations lower than that of the liquids adhering to the filaments, conveniently by washing with solutions of decreasing concentrations, for example, as by the process of Specification 328,911, [Class 2 (ii), Cellulose &c.].  The washing may be effected by spraying or in a centrifugal spinning box.  The solvents employed are preferably such that by reason of their innocuous properties a residue of the solvent may be permitted to remain in the washed products.  During coagulation a stretch may be applied so as to produce filaments of one denier or less even with the use of relatively large spinning orifices.  By adjusting the proportion of the solvent in the coagulation bath, products of various degrees of lustre may be obtained, generally the lustre being higher as the proportion of solvent is greater.  The products obtained are distinctive in that although wet-spun their lustre is reduced by moist steam and hot or boiling aqueous media, and in that ironing or treatment with solvents does not increase the lustre of the non-lustrous products.  The finished products may be subjected, while under tension or not, to treatment with solvents still further to improve their qualities. Specifications 177,868, 179,234, 309,201, 311,790, 312,095, and 312,096, [all in Class 2 (ii), Cellulose &c.], are referred to.
Patent GB-623181-A (GB)
Title: Improvements in or relating to signal reproducing apparatus
IPC: H04B3/44
Filed: 1945-11-30
Abstract: 623,181. Valve circuits. SULLIVAN, B. J., and BECKER, H. W. Nov. 30, 1945, No. 32364. Convention date, May 15, 1944. [Class 40 (vi)] [Also in Group XXXIX] Energy at supersonic frequency, together with D.C. and modulated carriers is supplied over lines 10, 11, the supersonic frequency being applied over transformer 18 to heat the filament of valve 12. The carriers are fed over potentiometer 31 to transformer 32, 41, tuned by capacitors which are selected by switches 38, 49, the selected carrier being demodulated by the valve, energy at the modulation frequency being fed to a reproducing device 26. The D.C. is fed over the tuned circuit 16 for rejecting carrier frequencies and the transformer 18 to the anode and screen grid circuits. In a modification, Fig. 2 (not shown), the anode and screen grid supplies are obtained by rectifying the supersonic frequency from a further winding on transformer 18.
Patent GB-1005426-A (GB)
Title: Adjustable template for drawing ellipses
IPC: B43L11/04
Filed: 1962-08-23
Abstract: 1,005,426. Mathematical drawing appliances. H. HILLE, and F. HARTWICH. Aug. 23, 1962, No. 32375/62. Heading B6P. An adjustable template for drawing ellipses comprises four superposed elliptical templates 1, 2, 3, 4 of identical shape mounted between a base 5 and a head 6. Each template has a slot 7 to permit displacement; a shaft 8 of a control knob 9 passes through the slots. By displacing the templates, through rotation of knob 9, various sizes of ellipses can be drawn. A control disc 14 having arcuate slots 15 is arranged on shaft 8, the slots being engaged by pins 16 and 17 of templates 1 and 3. Recesses 18, 19a are provided for the pins 16, 17 and 19, respetively. Cut-outs such as 2d are provided in each template 1, 2, 3, 4. Lines, marked by grooves, extending through the centre are disposed at angles of about 7 and 18 degrees to act as drawing aids.
Patent GB-1186234-A (GB)
Title: Method and Apparatus for Controlling and Metering the Flow of Granular Material in Road Striping Machinery.
IPC: E01C23/18
Filed: 1967-07-14
Abstract: 1,186,234. Marking road lines. WALD INDUSTRIES, Inc. 14 July, 1967 [28 Feb., 1967], No. 32469/67. Heading E1G. In a road line marking vehicle wherein paint-spraying nozzles 37-38-39 are followed by glass bead spraying nozzles 34-35-36, a smooth adjustable flow of beads from a pressurised tank 11 is obtained by connecting the nozzles 34-35-36 to a manifold or container 30 which is maintained at a desired pressure by an air line 16-24-26 controlled by a valve 21. The .pressure in container 30 tends thus to remote the effect of fluctuations in the pressure drop in the bead line 28 (e.g. due to variations in bead packing). As shown the air line is supplied from the compressor 13 which pressurises tank 11, and is connected through filters 27 to two containers 30, 30'. The valve 21 may be controlled manually, or electronically in relation to vehicle speed.
Patent GB-1459987-A (GB)
Title: Blade scraper
IPC: B44D3/16
Filed: 1975-03-27
Abstract: 1459987 Hand scrapers LOUIS M GERSON CO Inc 27 March 1975 [19 April 1974] 32492/76 Divided out of 1459986 Heading B4B The subject matter of this Specification is substantially the same as that described in Specification 1,459,986, but the claims are concerned with the construction of the safety device 55 which must be disengaged before the slide 60 can be moved to the operative position by the button 63.
Patent GB-1106996-A (GB)
Title: Improvements in pressure bleeder valves
IPC: B60T11/34
Filed: 1964-08-10
Abstract: 1,106,996. Valves; hydraulic brakes. E.H.W. FOREMAN. 28 July, 1965 [10 Aug., 1964], No. 32540/64. Headings F2F and F2V. In a bleeder valve for use at the brake bleeding orifices at the wheels of a vehicle, the conical, part-spherical or dome-shaped closure head 7, provided with a centralizing projection 9 is locked against correspondingly shaped seat 8 of braking cylinder bleeder orifice 6 by the abutment of an annular shoulder 15 on the closure with the end face 14 of a body member 1 which is screwed into the braking cylinder 5 whereby, upon unscrewing the member 1, the head 7 is unseated against spring 11 into contact with face 14 and fluid flow to outlet 13 occurs via relief space 18, slots 16, 17, on surfaces 15, 14 respectively or on only one of the surfaces, and a fluid channel 19 formed between stem 10 and bore 2 forming a stem guide. The channel 19 may be formed by one or more flats (20) (Fig. 6, not shown) on the cylindrical stem (10) or bore (2) or, alternatively or additionally, by helical slots (21) (Fig. 10, not shown), or a longitudinal slot (22) (Figs. 8 and 9, not shown) in the bore (2) or stem (10) or, instead of slots, helical or straight projections (23) (Fig. 11, not shown) may be employed. The spring 11 may abut the end 24 of the stem or stem surface 15.
Patent GB-768042-A (GB)
Title: Improvements in or relating to a process and apparatus for depositing a magnetic sound track on motion picture film
IPC: G11B5/633
Filed: 1954-11-10
Abstract: 768,042. Coating webs. GEVAERT PHOTOPRODUCTEN N.V. Nov. 10, 1954 [Nov. 13, 1953], No. 32570/54. Class 140. [Also in Group XX] A process of depositing a narrow sound-track on a motion picture film comprises supplying a liquid coating material for forming the track under pressure through a feed nozzle on to the surface of the film at a rate controlled in relation to the speed of the film moving under and in spaced relation to the feed nozzle, the coating material 'being squeezed and spread sideways on the film between a spreader and the film to lay a track of a desired width. As shown in Fig. 1, magnetic solution is deposited from a container 6 through a nozzle 10 on a film passing round a roller 5. The container is provided with an air pressure inlet 12 and a needle 14 for closing and cleaning the feed conduit. The container is mounted on an arm 7 adjustably mounted on a pivot 8. A roller 20 is adjustably mounted on an arm 21 pivoted to the arm 7 to be just above the film surface to raise the container should a splice occur in the film. The nozzle has a lower plate surface which spreads the solution, the width of track being determined by the height of the nozzle from the film. The track is viewed by a microscope 23. The film passes between plates 2 to remove dust and through lateral guides 3. After coating it passes through a desiccator 15 and over calendering rolls 17 to 19.
Patent GB-325987-A (GB)
Abstract: 325,987. Lepage, A. Feb. 11, 1929 Time checks and time registers.-In apparatus for timechecking the use of billiard balls wherein access to the receptacle containing the balls sets the clockwork in motion, an additional receptacle for, say, snooker balls is provided and controls and is controlled by the same mechanism as the first receptacle and is interlocked with the latter. Thus by the setting of a handle G<1>, Fig. 1, to one or other indication and by operating the apparatus with the usual key, access may be obtained to the billiard balls in the upper receptacle A through its door A<1>, or the lower receptacle F may be unlocked to permit its removal from the casing, the opening of the door or removal of the receptacle F effecting release of the balance wheel W, Fig. 6, by the brake M. The door A<1> is normally locked by a latch I, Fig. 3, and when the shaft T is turned by the operator's key, the latch is shifted by a cam U to free the door. A pin A<3> on the door guide A<2> normally bears on a lever N retaining another lever 0, Fig. 4, to keep the spring- controlled brake rod M<1> in effective position. By the opening of the door, therefore, the lever 0 can rock and allow the brake rod to descend. To ensure replacement of the balls the cover A<1> can only be fully closed when catches V<1> are removed from the path of notches A<4> in the guides by the displacement of plungers V connected with the catches. When it is desired to use the snooker balls the lever G<1> is swung over to rock a lever H, Fig. 8, to remove one end from beneath a lever K1 The pressure of a blade spring k thereupon lowers the end K into engagement with a catch a<2> to lock the door A<1>. The other end of the lever H bears against an arm L<1> extending from a rod L which is thereby rotated to bring a plate L2, Fig. 7, above one end of a lever J, the other end of which normally holds the receptable F in place. If the key is now inserted and turned the cam U lowers the rod L and so operates the lever J to free the receptacle F. By the withdrawal of the latter a lever S, linked up as shown in Fig. 4, may descend and thus permit movement of the brake rod M<1>. To ensure replacement of all the snooker balls before the receptacle can be pushed fully home, pallet levers X are arranged to depend into the path of the top balls of the extreme rear columns so as to be rocked thereby and free catch levers Y from the rails f on the receptable.
Patent GB-361561-A (GB)
Title: Improvements in or relating to hydraulic couplings for use on motor vehicles or the like
IPC: F16D33/18
Filed: 1930-10-30
Abstract: 361,561. Hydraulic transmission of power. BAUER, G., 82, Mittelweg, Hamburg, Germany. Oct. 30, 1930, No. 32661. [Class 69 (ii).] In a hydraulic coupling comprising two circuits 2a, 2b, the vanes of the driving and/or driven member of one circuit are displaced relatively to those of the corresponding member of the other circuit by half the angle between adjacent vanes.
Patent GB-274720-A (GB)
Title: Improvements relating to pruning tools and like shearing implements
IPC: A01G3/025
Filed: 1926-12-28
Abstract: 274,720. Wynn, Timmins, & Co., Ltd., and Randall, T. A. Dec. 28, 1926. Shears. - A simplified construction of pruning &c. shears having a toggle operated sliding blade comprises a member a provided with a transverse or inclined slot a<1> to receive the twig &c. to be cut, handles b pivoted to member a pivoted to toggle links d which operate a sliding rod e connected to the blade f which slides in guides on the member a, and a spring c tending to separate the handles b and retract the blade. In the cutting stroke the blade moves away from the handle. A hooked link g may be provided adapted to engage a stud to hold the handles in closed position.
Patent GB-846646-A (GB)
Title: Improvements in or relating to extensible materials
IPC: E21D11/10
Filed: 1958-10-14
Abstract: 846,646. Moulding plastic sheets. WIGGINS, TEAPE & CO. Ltd., RANCE, H. F., and NEWMAN, J. A. S. Feb. 9, 1959 [Oct. 14, 1958], No. 32799/58. Class 87(2). [Also in Group VIII] Plastics, e.g. polyethylene, polyvinylchloride, polystyrene and cellulose esters, are compressed e.g. longitudinally with the aid of a thick apron or belt 28, e.g. of soft rubber which is flexed between a roll 29 and rolls 26, 27 so that the plastic is thickened but does not crÛpe, its density remaining substantially unchanged, the plastic being then set so that it has increased longitudinal extensibility. As illustrated, a web withdrawn from a reel 23 is tensioned by wooden bars or metal rods 16, steamed at 18, compressed at 13, passed over a compensator 14, dried by a drum 22 and felt 19 and wound up at 25. In a modification, the belt 28 is omitted, the rolls 26, 27 and 29 are closer together, the rolls 26, 27 are surfaced with axially serrated hard rubber, the roll 27 is driven faster than the roll 26, and a shaped bar, which may be heated fills part of the space between the three rolls. Alternatively, the serrations may be omitted, or the roll 27 may be omitted and the roll 29 surfaced to give a frictional grip. Specifications 529,579 and 727,261 are referred to.