baber/WOPTO huggingface dataset:
Patent GB-1305773-A (GB)
IPC: G03C1/34
Filed: 1970-04-21
Abstract: 1305773 Sensitized photographic silver halide emulsions EASTMAN KODAK CO 21 April 1970 [22 April 1969] 19043/70 Heading G2C A sulphur and selenium sensitized photographic silver halide emulsion of which the silver halide contains at least 10 mole per cent silver chloride and not more than 10 mole percent silver iodide, the remainder being silver bromide, contains a colour coupler. The sulphur and selenium sensitization may be effected simultaneously. The silver halide grains may be chemically sensitized after having reached their final size and shape. The colour coupler may be incorporated in the emulsion after chemical sensitization of the grains. Chemical sensitization may be effected with a mixture of sodium thiosulphate and dimethylselenourea. The selenium sensitizer may be generated in situ from a non-labile selenium compound (i.e. one which does not yield a silver selenide that is insoluble in water at 20‹C upon addition of aqueous silver nitrate solution). The sulphur sensitizer and the labile or non-labile selenium compound may be added to the emulsion as a solution in a water-immisable solvent. The combination of sulphur and selenium sensitization and the presence of the coupler provides a synergistic increase in speed without adversely affecting the colour development characteristics of the coupler.
Patent GB-706095-A (GB)
Title: Improved photographic contact printing apparatus
IPC: G03B27/16
Filed: 1950-07-31
Abstract: 706,095. Photographic contact-printing apparatus. MORSE, S. H. Oct. 31, 1951 [July 31, 1950], No. 19050/50. Class 98(2) In contact-printing apparatus in which the lightsensitive material and the transparent original are fed round the outside of a hollow glass cylinder surrounding the printing light source, the cylinder has a narrow longitudinal gap through which are supported at least three electric discharge lamps in two or more groups, the lamp or lamps in at least one group being caused to move longitudinally of the cylinder faster than those of the other group or groups. The intensity of at least one lamp may be adjustable relative to the others. As shown, sheet material to be exposed together with that to be copied is fed from a table 3 around a stationary gapped translucent cylinder 7 by an endless travelling blanket or parallel belts 2 for exposure by vacuum discharge lamps 8 mounted on carriages 9, 10 above the cylinder and extending through the gap in the cylinder. On leaving the cylinder at 7a, the sheet material becomes entrained between the belts 2 and an idler flexible mesh blanket 4 extending around the fluted belt-driving roller 1 so that the sheet material is delivered to the tray 6. A crank 14 driven by the motor driving the roller 1 is connected by a link 15a to an arm 15 fixed on a shaft 15<SP>1</SP> to which is secured a second arm 11. To this arm are pivoted links 12, 13 pivoted also to the lamp carriages 9, 10, the carriage 10 having grooved wheels 19 running on rails 16 on the frame of the machine and the carriage 9 having similar wheels running on rails formed on the frame 10. As described, four lamps 8 are provided, the outermost pair being fixed on the carriage 10 and the inner pair being secured to the carriage 9. By suitable choice of the length of the links 12, 13, the carriage 10 is caused to move more slowly and a shorter distance than the cariage 9 so as to ensure adequate exposure of the margins of the sheet. The cylinder may be air-cooled by means of fans at-each end.
Patent GB-1035301-A (GB)
Title: Improvements in or relating to apparatus for unstacking crates or the like piled upon one another
Inventor: ARBER ROWLAND SACKVILLE PRESTO
IPC: B65G59/06
Filed: 1964-05-07
Abstract: 1,035,301. Unstacking. U.D.E.C. Ltd. May 5, 1965 [May 7, 1964], No. 19105/64. Heading B8C. Unstacking.-In a machine in which the bottom crate of a stack is lowered on an elevator 178 (Fig. 1, not shown) while the remaining crates are supported by holding means 182, the operation of the holding means 182 is interrupted, when the stack is exhausted, under the control of a crate-detecting device mounted on the elevator. In the embodiment described the crates are detected by a linkage 194, 196, 197 (Fig. 3, not shown) depressed against a spring 202 by a crate to place a sector 201 in a position to operate a valve 8 during movement of the elevator: the valve 8 initiates the extension of pawls 182 engaging suitable ledges on the crates. The sectors 201 may alternatively, or in addition, operate a valve 7 initiating retraction of the pawls. The elevator is formed by the inturned lower edges 179 of vertical plates 178 guided for vertical movement effected through chains 173 from an hydraulic motor 188. When the elevator 178 has deposited the bottom crate in position to be pushed by pawls (not shown) to a delivery opening 163, the crates 178 are swung outwardly by toggles 180 controlled by a pneumatic cylinder 176 so that the elevator can be returned to engage the next orate in the stack. The proper sequence of operations is controlled by crate-detecting feelers and other feelers controlling relay valves in a pneumatic relay circuit. Manual controls permit the cycle to be interrupted at any of several points to clear a jam. Feeding in fresh stacks.-The front guide pillars 164 for the stack are swung aside about vertical axes, together with the stack-holding pawls 182, when a fresh stack is to be inserted. The guides are automatically returned to operative position when a chain conveyer has completed the movement of the stack into the machine. Subsequent stacks are stopped by lateral movement of guides 154, 155 to deflect the stack against an abutment 161. Adjustment for different sizes of crate.-The valve 8 may be rendered inoperative, and alternative valves 26, 27 at different heights brought into operation when crates of a different size are to be handled.
Patent GB-697364-A (GB)
Title: Improvements relating to electrical measuring apparatus
Inventor: ASKEW JOSEPH HORDON
IPC: G01P5/17
Filed: 1951-08-14
Abstract: 697,364. Electric indicating systems. EVERSHED & VIGNOLES, Ltd. June 30, 1952 [Aug, 14, 1951], No. 19145/51. Class 40 (i) [Also in Group XXXVI] Apparatus for determining the square or other integral root of a physical magnitude represented by a proportionate variable input voltage, comprises a series of mechanically interconnected dynamo-electric generators driven at a variable speed, corresponding in number to the index of the root, and cascaded so that the output of the first excites the field of the second and so on, whereby the output voltage of the last of the series is proportional to the square or other power of the rotational speed, which is automatically controlled so that the output voltage is equal to the input voltage, at which the speed is proportional to the appropriate root of the physical magnitude. The pressure developed in the pitot system of a ship's log is applied to a bellows B pivoting a contact lever C in opposition to the force of a moving coil electromagnet system D to oscillate a contact Cm in between positive and negative contacts C+, C- to bias the grid of a triode El through a resistance-capacitance smoothing circuit. The average cathode current of El energizing electromagnet D produces a voltage drop proportional to the input pressure across a resistance J. Two dynamoelectric generators K1, K2 driven by a motor W over shaft S are connected so that the output of K1 energizes the field of K2 and the output voltage of K2 is connected in opposition to the voltage drop across J to energize a moving coil electromagnet system O, pivoting a contact lever N to oscillate contacts nm between positive and negative contacts n+, nto bias the grid of a triode E2 through a resistance capacitance smoothing circuit. The average cathode current of El energizes motor W to drive shaft S at such a speed that the voltage drop across J and the output voltage of generator K2 balance out and the speed measured by tachometer generator Q and voltmeter V is proportional to the square root of the input pressure and thus to the speed of the ship. The distance travelled may be indicated by an integrating counter driven from the shaft, and for operation according a higher power law further generators with the field of the succeeding energized from the output of the preceding may be inserted between Kl and K2.
Patent GB-125564-A (GB)
Title: Improved Apparatus for Testing Aeroplanes.
Inventor: LOW ARCHIBALD MONTGOMERY
IPC: G01M9/02
Filed: 1918-11-21
Abstract: 125,564. Low, A. M. Nov. 21, 1918. Testing captive aeronautical machines.-A fullsize aeroplane b is tested by being suspended or supported within a tunnel a and provided with means, such as a spring balance c, for taking up the propeller effort. Air may be forced past the machine by a fan or blower d.
Patent GB-137559-A (GB)
Title: Improvements in internal combustion engines
IPC: F01L5/04
Filed: 1918-11-22
Abstract: 137,559. Hall, M. W. Nov. 22, 1918. Valves; valve-gear; regulating.-A piston valve I and a concentric annular valve E are reciprocated by a half-speed shaft to control inlet and exhaust ports 15, 22 respectively. The exhaust port 22 is uncovered by the valve E and opens directly into the cylinder. Combustible mixture is delivered into the interior of the valve E through a port 18 and enters the cylinder through a port 20 controlled by the piston valve 1. When acted upon by the explosion pressures, the valves move towards the half-speed shaft, which is geared to the main shaft by a chain. Both shafts may be provided with fly-wheels, and in an aircraft engine, a propeller may be driven from the valve shaft. During normal working, the inleb port in the valve E is closed late in the compression stroke, a portion of each charge being rejected to the supply pipe. To vary the amount of the rejected charge, the position of the valve shaft is adjusted by altering the positions of the chain-tightening rollers R, R<1> shown in Fig. 10. The roller R is secured to an arm P" on a sleeve connected to a hand-lever P, the roller R<1> being mounted upon an arm S<1>. The arms are forced apart by an adjustable spring T mounted upon screws u, u<1>. By moving the lever P into the dotted-line position shown in Fig. 10, the slack in the driving-chain is transferred from one side of the valve shaft to the other, the position of the shaft relatively to the crank-shaft being altered in consequence. Bolts are housed in tubes k' and serve to hold in position the bearings of the two shafts.
Patent GB-1008381-A (GB)
Title: Multi-lobal textile filaments
IPC: D02G1/14
Filed: 1962-05-18
Abstract: 1,008,381. Spinning and finishing yarns. MONSANTO CO. May 18, 1962 [May 22, 1961], No. 19266/62. Headings D1F and D1W. [Also in Division B5] A man-made textile filament has a multilobal cross-section along the length thereof characterised by an area ratio (i.e. the ratio of the area of the circumscribing circle 3 to the area of the cross-section) and a perimeter ratio (i.e. the ratio of the perimeter of the circumscribing circle 3 to the perimeter of the cross-section) within the range represented by the area encompassed by the polygon of Figure 8, wherein the perimeter ratio is plotted along the x-axis, and the area ratio along the y-axis. The dimensions of the orifices of a suitable spinneret for extruding the filament are given (see Division B5). The modification ratio (the ratio of the radius of the circumscribed circle to the radius of the inscribed circle) is preferably between 2. 6 and 5. 0. As described the filaments are tri-lobal. A yarn formed of these filaments may be crimped between toothed wheels, Fig. 3 (not shown), to displace the lobes randomly from their original positions-as by the process of Specification 925, 732. The lobes may be of uneven length and asymmetrically disposed. The filaments may be of nylon or other fibre-forming synthetic polymers, a list of which is given. Specification 905,247 also is referred to.
Patent GB-1507352-A (GB)
Title: Integrated grating output coupler in diode lasers
IPC: H01S5/187
Filed: 1975-05-08
Abstract: 1507352 Electroluminescence XEROX CORP 8 May 1975 [15 Oct 1974] 19417/75 Heading C4S [Also in Division H1] In a single heterostructure semiconductor laser polarized radiation is emitted at an angle to the plane of the light waveguide region 2 by forming the heteroboundary as a regular triangularlytoothed grating 5. Radiation generated within the region 2 and reflected by end films 10 is scattered by the teeth, a resulting beam of radiation inclined to the plane of the region being obtained. This angle is determined by the periodic spacing of the teeth in relation to the stimulated emission wavelength, and if the tooth spacing is an integral number of radiation wavelengths, the emission is at a right angle to the plane of the waveguide region. The output is extracted through a major surface of the semiconductor which is coated with an antireflection film 12. The semiconductor structure may consist of a p-type GaAs substrate 4, a p-type Ga 0À4 AP 0À6 As layer 3 having a toothed grating boundary formed by laser beam interferometry in a photoresist, and a GaAs layer 1 which includes a diffused p-n junction 6. The semiconductor structure includes bar electrodes 7 on layer 1 to provide a window for emergent radiation and an electrode 8 extending over the substrate. The heteroboundary may alternatively have an asymmetric saw tooth profile, Fig. 4 (not shown), in place of the 45 degree root angle teeth of Fig. 1. The toothed grating itself contributes towards the resonator action by producing optical feedback.
Patent GB-460173-A (GB)
Title: Improvements in and relating to bucket wheels, nozzle diaphragms or the like and methods of making the same
IPC: B23P15/00
Filed: 1936-07-13
Abstract: 460,173. Turbine blades. BRITISH THOMSON-HOUSTON CO., Ltd. July 13, 1936, No. 19421. Convention date, July 18, 1935. [Class 110 (iii)] [Also in Group XXII] The blades 15 or partitions of turbine bucket wheels, nozzle diaphragms or the like are welded at 16, e.g. by flash welding, to the smaller 13 of two concentric cylindrical surfaces formed on a disc or holding member 10, the blades &c. being slightly spaced at 12 from the other surface 14, and a number of spacers 17 are then fusion welded at 20 to the larger cylindrical surface 14 so that the spacers lie slightly above and cover the welds 16. Smooth passages for fluid are thus obtained without smoothing the welds 16. The outer ends of the blades are then passed through openings 21 in a spacer band 18, the edges of the band, which are cut at 22, being forced towards the blades to form smooth corners. and fusion welding is then effected at 23 away from the passages between the blades. The front portions 24 of the spacers 17 are then forced into contact with the sides of the blades to form smooth corners and welds 23 are then effected to connect the parts 17, 13 to each other and also to the thin edge portions of the blades.
Patent GB-225799-A (GB)
Title: Improvements relating to drop-end fittings for drop-end couches and the like
IPC: B63B29/10
Filed: 1924-08-16
Abstract: 225,799. Henes, S. Aug. 16, 1924. Stays.-In a couch drop-end fitting of the kind comprising a lazy-tongs device hinged to the couch frame 2 and to the drop-end 1, and having a manually-operated spring-urged rack 3 pivoted at 4 and engaging a pin 8, the upper ends of the. links 5, 9 are spaced apart by a link 12..so that the drop end 1 is engaged at two points 15, 16, while the couch frame 2 is engaged at one point 17 only.
Patent GB-459189-A (GB)
Title: Improvements in the recovery of aromatic compounds from liquid hydrocarbons
IPC: C07C7/10
Filed: 1935-07-08
Abstract: Liquid hydrocarbons boiling below 200 DEG  C. are freed from aromatic constituents by extraction at a temperature not higher than minus 20 DEG  C. with a mixture of liquid sulphur dioxide and liquefied normally gaseous hydrocarbons.  In examples, benzine containing aromatic hydrocarbons, phenols and cresols, obtained for example by destructive hydrogenation of coal tar is treated below -40 DEG  C. with liquefied ethane or propane mixed with liquid sulphur dioxide. After standing, the extract layer containing a substantially quantitative yield of aromatic substances, is removed, freed from the solvents and distilled to form benzene, toluene and xylene fractions which are free from naphthenes.  The aromatic extracts may be used as motor fuels alone or mixed with other motor fuels.  Specification 441,104 is referred to.
Patent GB-256956-A (GB)
Title: Improvements relating to the supporting of a core in a divided casting mould
IPC: B22C21/14
Filed: 1926-08-06
Abstract: 256,956. Will, E. Aug. 13, 1925, [Convention date]. Moulds, particularly two-part moulds for use in casting- machines, have yieldable core centring means. As applied to a mould for belt pulleys, the core b is resiliently supported on the mould part a and after seating in the recess d in the other part slides in the part a during the final closing of the mould.
Patent GB-280502-A (GB)
IPC: B60T11/228
Filed: 1927-07-22
Abstract: 280,502. Hydraulic Brake Co., (Assignees of Loughead, M., and Loweke, E. F.). Nov. 12, 1926, [Convention date]. Fluid-pressure.-Hydraulic brakes are operated by a manually actuated piston 18 in a cylinder 19 immersed in the reserve liquid to maintain the system full of liquid and the piping and brake cylinders on the vehicle wheels are maintained under a slight continuous pressure to prevent admission of air to the system. The piston is actuated in one direction only by a lever 16 which may be returned to normal position independently of the action of the piston. Adjacent the cylinder head 20 connected !to the piping 38 is a valve housing 31 carrying a rubber-disc valve 33 pressed on its seat by a spring 35. The strength of the spring 35 and the piston return spring 26 are arranged so that the return movement of the piston will not create sufficient suction to open the valve 33, if the return springs on the wheel brake cylinders are sluggish and fail to force, the liquid back past the valve 33. The piston cupwasher 25 is sufficiently flexible however to yield and allow liquid, in this event, to flow past it through the ducts 41 in the piston and relieve suction an the cylinder. A port 42 in the cylinder is uncovered by the piston in its release position to ensure replenishment of the system and also to permit excess fluid to escape from the cylinder. A valve 32 allows fluid to be forced from the cylinder to the piping 38 on application of the brakes. The cylinder 19 is mounted in the head 20 which is attached to the reservoir 5 containing the reserve liquid by bolts 21. The return movement of the piston 18 is limited by a C-spring 30 in a groove in the cylinder. A shaft 9 is connected by a lever and a link 10<1> to the foot brake pedal and is provided with a lever 16 for operating the piston 18.
Patent GB-921707-A (GB)
Title: Props for mining work
IPC: E21D17/082
Filed: 1959-06-08
Abstract: 921,707. Mine props. GEWERKSCHAFT EISENHUTTE WESTFALIA. June 8, 1959, No. 19577/59. Class 20 (2). A mine roof supporting-bar comprises a topplate 13, side plates 18, 19 and bottom plates 20, 21 welded to a central cup 14 having a ball- and-socket engagement with the top of a prop 11. The cup 14 is tapered in conical form at 16 to clear the prop when the bar tilts. The bar also contains strengthening transverse plates. A bar 29 for connecting the roof bar to another roof bar or for forepoling fits in a socket 28 at the end of the bar and is secured by a screw at 31.
Patent GB-1174644-A (GB)
Title: Improvements in or relating to Switching Arrangements including Electromagnetically-Actuated Relays
IPC: H01H51/24
Filed: 1967-04-28
Abstract: 1,174,644. Electromagnetic relays. SIEMENS A.G. 28 April, 1967 [29 April, 1966]. No. 19592/67. Heading H1N. A pulse operated electromagnetic attracted armature relay is arranged to store magnetic energy so as to operate due to a current pulse, the duration of which is less than the time of operation of the relay. The relay shown has a pin core 3 extending through a glass seal 2 into a sealed housing formed by parts 1, 4, the lastmentioned being a lid 4 on which the relay armature 6 is mounted by a leaf spring (not shown). The relay is polarized by a permanent magnet 12 located between a yoke 10 and housing part 1 and the core 3 and armature 6 act as contacts. The magnetic storage may be due to eddy currents in the iron circuit, a short circuited winding (not shown) or a diode (not shown) shunting the energizing winding.
Patent GB-361908-A (GB)
Title: A device for extracting screws
IPC: B25B27/18
Filed: 1930-06-27
Abstract: 361,908. Extracting screwed bushes. GREENFIELD TAP & DIE CORPORATION, Greenfield, Massachusetts, U.S.A. June 27, 1930, No. 19602. Convention date, Dec. 28, 1929. [Class 83 (iii).] A device for extracting b ro k e n screwed studs &c. comprises a shank 12 having a tapered end 14 provided with longitudinal flutes 18 and a screw thread 16 of opposite hand to the thread of the stud 11 to be extracted. The threads 16, which preferably have a section with a vertical angle of 20‹ as shown, are separated by blank tapered surfaces 20 of a width equal to half or more of the pitch of the thread and the flutes are preferably cut so that their bases lie substantially in the blank surfaces 20. In use the device is inserted in a hole 15 drilled in the broken stud 11 and on rotation to extract the stud the end 14 screws into the hole and causes the blank surfaces 20 to bind tightly against its sides. The sectional height of the threads 16 is a minor fraction of the lead.
Patent GB-187698-A (GB)
Title: Improvements in or relating to display stands for textile goods or the like
IPC: A47F7/17
Filed: 1921-07-22
Abstract: 187,698. Wade, H., (Salt's Textile Co. (de France) Soc. Anon.). July 22, 1921. Racks.-A display stand for textile goods &c. comprises a base portion 15 supporting a rotary platform 20 upon which is supported, with its axes vertical, a carrier for a roll of material C adapted to hold the roll with its adjacent surfaces spaced apart, and comprising two hookcarrying members 5 mounted at opposite ends of a centre support 6, the hooks being arranged so that the roll is of rectangular cross-section, the lower hook-carrying member being secured to the platform 20 by readily adjustable clamps 32.
Patent GB-1453365-A (GB)
Title: Mixture induction system for use with an internal combustion engine having main and auxiliary combustion chambers
IPC: F02M31/04
Filed: 1974-05-06
Abstract: 1453365 IC engines-main and auxiliary combustion chambers NISSAN MOTOR CO Ltd 6 May 1974 [9 May 1973] 19766/74 Heading F1B The invention relates to an I.C. engine of the spark ignition type having a main combustion chamber 18 and an auxiliary combustion chamber 20 in or associated with each cylinder 12, there being main and auxiliary down-draught carburetters 34 and 36 which supply weak and rich air/fuel mixtures through main and auxiliary inlet passages, 48a, 50a and 26, 28 all respectively. The main and auxiliary passages have respective hot spots 52, 54 located below the main and auxiliary carburetters and heattransfer means in association with the hot spots, the auxiliary inlet passage 50a being formed with a well or depression 56 disposed in the region of the hot spot 54. The auxiliary combustion chamber 20 is provided with an inlet valve 32 and the main combustion chamber with an inlet valve 30; the auxiliary chamber communicates with the main chamber through a passage 22. The exhaust gas outlet duct 60 is in contact with the main auxiliary inlet passages 48a, 50a so as to constitute the hot spots 52, 54. In Fig. 3 the main and auxiliary carburetters 34, 36 are disposed oppositely to those in Fig. 1, the well or depression 56 again being formed in the auxiliary inlet passages 50a. In this embodiment, the hot spots 54, 52 are provided by electric heating coils, also by means of the cooling water passage 66 through which hot water is flowing.