baber/WOPTO huggingface dataset:
Patent GB-535479-A (GB)
Title: Improvements relating to servo-motors for the automatic control of internal combustion engines
IPC: F02D1/00
Filed: 1939-10-09
Abstract: 535,479. Fluid-pressure servomotors. C.A.V. Ltd., NICOLLS, W. E. W., and EVANS, F. M. Oct. 9, 1939, No. 27519. [Class 135] A fluid pressure servomotor particularly adapted for automatically controlling the fuel supply to internalcombustion engines in response to the action of an aneroid device comprises a piston b slidable and rotatable in a cylinder a and a rotatably actuated member h carried by the cylinder and having a quick-pitch screw-thread or equivalent helical connection with the piston. The member h is held against axial movement by collars i and the piston is normally held against rotation by projections c in the piston-engaging slots d in a boss e on a spindle rotatably mounted in the end cover f and fitted with a manipulating lever k. According to the Provisional Specification the boss e may be formed integrally with the cover f.
Patent GB-811527-A (GB)
Title: Improvements in or relating to methods of producing aldehydes
IPC: C07C45/44
Filed: 1956-09-11
Abstract: An aldehyde is produced by the reduction of benzonitrile or a nitrile of the formula R-A-CN, wherein R is an aromatic, alicyclic or heterocyclic radical and A is an aliphatic radical containing not more than 12 carbon atoms, by means of a di-alkyl aluminium hydride and hydrolysis of the aldimine complex formed in an aqueous medium. Examples of suitable nitriles are benzonitrile, cinnamic acid nitrile, b -ionylidene acetonitrile and Vitamin A acid nitrile.  It is preferable to effect the reduction in an oxygen-free atmosphere, as for example in nitrogen, and at a temperature between -50 DEG  and +50 DEG , using about equimolar quantities of reducing agent and nitrile.  The dialkyl aluminium hydride used is preferably one in which each alkyl group contains 1 to 6 carbon atoms, for example di-ethyl or di-isobutyl aluminium hydride.  The reduction may take place in an inert solvent such as n-hexane, cyclohexane, benzene, toluene, petroleum ether, diethyl ether, methyl ethyl ether, di-isopropyl ether, di-propyl ether, dioxane or tetrahydrofurane. The reaction product of the nitrile and reducing agent may be decomposed into the aldimine complex by adding moist ether and the aldimine complex may be decomposed by adding dilute acid.  In examples: (1) a cooled cyclohexane solution of di-isobutyl aluminium hydride is added with stirring, in a nitrogen atmosphere, to a cyclohexane solution of b -ionylidene acetonitrile, the product is decomposed by adding dropwise diethyl ether and then water, the jelly obtained is acidified with dilute sulphuric acid and after removal of solvent the b -ionylidene acetaldehyde is distilled off in vacuo; (2) Vitamin A acid nitrile is similarly converted to Vitamin A aldehyde.
Patent GB-442903-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H03G3/26
Filed: 1934-09-28
Abstract: 442,903. Wireless receiving systems. COLE, Ltd., E. K., Priory Crescent, Southendon-Sea, and WYBORN, E. J., Ray View, Undercliff Gardens, Leigh-on-Sea,. Sept. 28, 1934, No. 27790. [Class 40 (v)] The knob controlling the degree of noise suppression in a radio receiver is adapted simultaneously to modify other parts of the circuit to suit the modified setting. In one embodiment the three position noise-suppressor switch 4, which controls the degree of the receiver muting in known manner, is ganged with switches 1, 11 the former of which in one of its positions cuts out the I.F. amplifier V2, the latter controlling the insertion of an auxiliary reproducer 10 sensitive to high frequencies. The cutting out of the reproducer and/or amplifier may occur in one or two of the three positions of the switch 4. In a second embodiment, (Fig. 2, not shown), in some positions of the noise-suppressor control resistances are inserted in the tuned I.F. circuits to broaden the response thereof. The control may also change the circuit from a superheterodyne to a " straight " circuit by cutting out the frequency changer in some positions. Specification 427,747 is referred to.
Patent GB-537468-A (GB)
Title: An improved process for the separation of olefines from mixtures of hydro-carbons
IPC: C07C7/156
Filed: 1939-10-13
Abstract: 537,468. Olefines. STANDARD OIL DEVELOPMENT CO. Oct. 13, 1939, No. 27829. Convention date, Dec. 29, 1938. [Class 2 (iii)] Olefines containing 3 and 4 carbon atoms are separated from mixtures thereof with saturated hydrocarbons by bringing them into contact with solid cuprous halides and recovering the olefines from the addition compounds formed. The absorption is effected under such conditions of temperature and pressure that the partial pressure of the olefine is greater than the dissociation pressure of the addition compound formed. In the case of propylene, the absorption with cuprous chloride takes place at a temperature below 23‹ C., whilst with the butylenes a temperature below -20‹ C. is necessary. If ethylene is present, it may first be removed in known manner by absorption with cuprous chloride at a temperature above 23‹ C. A table is given showing the equilibrium dissociation pressures for addition components of propylene with cuprous chloride and bromide and of isobutylene with cuprous chloride at various temperatures. The use of cuprous fluoride is also referred to. The example describes the treatment of a liquid mixture of propylene and propane with cuprous chloride at -40‹ C. and the recovery of the propylene from its absorption product by raising to room temperature. The Specification as open to inspection under Sect. 91 also describes the separation of ethylene and gives the dissociation pressures for addition compounds of cuprous chloride and bromide therewith over a range of temperatures. It also states that, while the olefines may with difficulty be separated from one another, the hydrocarbon gases are preferably first fractionated and the olefines separately recovered therefrom. Two further examples are included, relating to the separation of ethylene from hydrogen and ethane mixtures respectively by contacting with solid cuprous chloride at 20‹ C. at 50 atmospheres pressure and regenerating the ethylene. This subject-matter does not appear in the Specification as accepted.
Patent GB-720481-A (GB)
Title: Photographic contact printing apparatus
IPC: G03B27/16
Filed: 1951-11-27
Abstract: 720,481. Photographic contact-printing apparatus. FIX, W. Nov. 27, 1951 [May 28, 1951], No. 27842/51. Addition to 715,060. Class 98 (2). The apparatus according to the parent Specification is modified by the addition of shields adjacent one or both margins of the film protecting them from direct light from the printing lamp whereby, during simultaneous exposure of the main and marginal portions of the film, the margin or margins may receive an exposure different from that of the main portion. As shown, strips 6, 7 shield the margins 4, 5 of the negative film and printing material from the main printing lamp 2 which through an adjustable continuously graded grey filter 3 prints the main portion of the film. The faces of the strips 6, 7 remote from the lamp 2 may be mirrors and light may be reflected by them from lamps 8, 9 which are fed in parallel through a resistance 13 continuously increased by means operated-, by a time switch 14 controlling the exposure time of the lamp 2, Alternatively the margins may be uniformly exposed by the lamps 8, 9 by a relay controlled by the time switch to produce a different exposure time for the margins from that of the main body of the film. In a further embodiment, reflectors 10, 11 direct light from the lamp 2 to the margins 4, 5 by means of the mirrors 6, 7 masking devices 12 of graded density being moved by means controlled by a time switch to reduce progressively the light falling on the margin.
Patent GB-179117-A (GB)
Title: An improved instrument for opening eggs
IPC: A47G19/28
Filed: 1921-10-20
Abstract: 179,117. Sebelin, R. L., and Sebelin, M. V. Oct. 20, 1921. Eggs, opening. -In a device for opening eggs, two p a i. r s of diametrically opposed serrated blades 12, 14 are simultaneously moved radially inwards by sliding members 4 which are pressed together against springs 9. The moving parts are mounted in a casing 1 having guides 7, 8 for the members 4, guides 10 for the blades 14 and a central aperture for the egg, a cover retaining the parts in position. The members 4 are provided with pins 11 which engage oblique slots 15 in the blades 14 and holes in the blades 12, the blades 14 being retained beneath the blades 12. The members 4 are recessed at 6 to accommodate 'the springs 9.
Patent GB-279099-A (GB)
Abstract: 279,099. Etablissements E. Jaeger. Oct. 15, 1926, [Convention date]. Addition to 275,207. Electromagnetic current and pressure meters.- The ammeter claimed in the parent Specification is modified by raising the current-carrying bridge 6 on pillars 10 arranged at right-angles to the polar axis of the permanent magnet 4. The pillars 10 are reduced at their lower ends and pass through holes in a small transverse bar 7 and in a bar 46 of soft iron or ferro-silicon having its axis at rightangles to that of the magnet 4, and serving to increase the density of the magnetic field about the poles of the magnet. The axle 16 is pivoted in pivot holes in the bar 7 and in a top bar 14, and carries a magnetic armature 19 in the shape of a double sector having its axis in the zero position parallel to that of the magnet 4. The axle 16 also carries an indicating-pointer 17 provided with segmental apertures 44, through which the pillars 10 pass, and with a bent-up part 45 opposite to the indicating arrow, which can be bent to balance the needle.
Patent GB-461174-A (GB)
Title: Improvements in means for supporting spring floors
IPC: E04F15/22
Filed: 1936-10-15
Abstract: 461,174. Spring - floors. BUCKLEY, J. F. Oct. 15,1936, No. 27968. [Class 20 (iv)] A member for resiliently supporting floor beams comprises a beam-supporting plate 1 formed with bosses 2, cylindrical holes 4 in which extend through the plate 1 and the top of the boss and are of smaller diameter at the upper end 5, each boss being adapted to contain a non-resilient spacing disc or block 7 arranged between the upper end of the boss and the top of a rubber supporting-block 8 which is also mounted in the boss. Two or three bosses 2 are cast integrally with the plate 1 and these are spaced apart to permit a floor beam to rest between them. The disc or block 7, which may be of wood, is of less diameter than the hole 4.
Patent GB-232876-A (GB)
Title: Improvements in and relating to merry-go-rounds
IPC: A63G1/34
Filed: 1924-11-22
Abstract: 232,876. Cramer, G. H. Nov. 22, 1924. Roundabouts.-In roundabouts of the type in. which interconnected platform segments carry wheels running on an undulating track, the segments 10 are carried by radial sweeps 3 pivoted at their inner ends to a hub 2 and carrying wheels 4 at their outer ends. The sweeps 10 areconnected by links 7 and are provided with depending brackets 11 which have jaws 12 engaging a driving cable 13. Posts 15 secured to theplatform carry horses.
Patent GB-868937-A (GB)
Title: Improvements in colour photographic materials
IPC: C07D231/26
Filed: 1957-09-04
Abstract: 1- (2 ;4 ;6- Trichlorophenyl)- 3- npentadecyl-5-pyrazolone is prepared by refluxing 2 ;4 ;6-trichlorophenyl hydrazine with ethyl 3-keto-stearate in ethyl alcohol containing 5 drops of acetic acid. Sodium ethoxide is then added and refluxing continued.  Instead of ethyl 3-keto-stearate, ethyl 3-keto-myristate or ethyl 3-keto-arachidate may be used to give respectively the corresponding 3-n-undecyl or 3-n-heptadecyl-5-pyrazolones.  The following pyrazolones are similarly prepared from the appropriate halogenated phenyl hydrazine and 3-keto ester: 5-(2 : 4 : 5-trichlorophenyl)-3-n-pentadecyl (or 3-n-heptadecyl)-5-pyrazolone, 1- (2 : 4- dichlorophenyl)- 3- npentadecyl- 5-pyrazolone and 1-(2 : 5 (or 6)-dichlorophenyl)-3-n-heptadecyl-5-pyrazolone. Specifications 541,589 and 680,488 are referred to.
Patent GB-872619-A (GB)
Title: Improvements in or relating to clutches
IPC: F16D27/118
Filed: 1959-08-17
Abstract: 872,619. Positive clutches. BENDIX CORPORATION. Aug. 17, 1959 [Aug. 15, 1958], No. 28044/59. Class 80 (2). A dog clutch comprising facial-toothed members 55, 57 engageable by the energizing of a field coil 32 is provided with a spiral cushioning spring 25 secured between a driving pulley 10 and the clutch input sleeve 20, the toothed member 55 being carried by an armature 45 axially movable on torquetransmitting pins 48 projecting from sleeve 20, the drive being transmitted from toothed member 57 to the output shaft 65. The armature 45 is normally spaced from sleeve 20 by pins 50 loaded by springs 54.
Patent GB-692880-A (GB)
Title: Improvements in or relating to cigarettes
IPC: A24D1/00
Filed: 1950-11-17
Abstract: A cigarette has a smaller proportion of "shorts" to long tobacco in the region of one or both ends than elsewhere, the weight per unit length of the tobacco filling in the end region or regions, which may consist substantially wholly of long tobacco, being the same as or less than the weight per unit length of the rest of the tobacco filling.
Patent GB-1313537-A (GB)
Title: Alumina palladium composite
IPC: H05K1/09
Filed: 1970-06-10
Abstract: 1313537 Component assemblies; printed circuits; integrated circuits MINNESOTA MINING & MFG CO 10 June 1970 [10 June 1969] 28207/70 Addition to 1310443 Headings H1K and H1R A substantially crystalline alumina substrate 14 of the composition defined in Specification 1,310,443, the main patent, has at least one electrically integral buried palladium connector 20 and palladium contacts 30 on one surface connected to said connector(s) by risers. Conductive "lands" 50, e.g. of gold, may be added on top of the contacts 30, the risers through holes 12 and the connector(s) 20 being sintered within the substrate material 14, 40 (see Fig. 5X) by firing. The substrate is produced in the conventional way by perforating with a laser and screening with a palladium ink the uncured substrate and then firing to cure the substrate and sinter the palladium connections. Fig. 6 shows a substrate including three thick film resistors 60 which have been screened and fired and two chip capacitors 62. A pad 56 is provided for receiving a semi-conductor chip (bonded on by a gold-silicon eutectic solder) and gold or aluminium leads are used to connect the chip to internal leads 52 using ultrasonic or thermo-compression welding. A cap is soldered on to the ring frame 54 and final connections to the package (external lands 52) are made using spring contacts or lead-tin solder, &c.
Patent GB-208847-A (GB)
Title: Improvements in and connected with siphons
IPC: E02B13/02
Filed: 1922-10-19
Abstract: 208,847. Ghate, S. N. Oct. 19, 1922. No Patent granted (Sealing fee not paid). Siphons.-An annular siphon for giving a discharge independent of variations of level in the source of supply comprises a fixed tube A, the upper part of which may taper outwardly, and a floating member H having its wall formed to enclose the wall of the tube, guides V being provided. The discharge may be varied by weighting the siphon, or by altering the length of the outlet leg, and the siphon may be made selfsealing by forming the outlet trough R to receive the mouth of the floating member. Air escape valves may be fitted. '
Patent GB-226654-A (GB)
Title: Improvements relating to thermionic valves or electron discharge tubes particularly for wireless signalling
IPC: H01J9/04
Filed: 1923-11-12
Abstract: 226,654. Levy, L. A. Nov. 12, 1923. Platinizing.-In the manufacture of a thermionic filament a layer of platinum is formed on an infusible core such as fused silica by coating the core with an organic compound as used for coating ceramic materials, and which, upon heating leaves the metal. For example a solution of platinous chloride with oil of rosemary and oil of lavender may be painted on the core, which is dried and heated to 500‹ C. The layer of platinum may be thickened by electrodeposition of platinum or other metal; or the surface of the core may be rendered conductive by using a reducing solution as in the manufacture of mirrors, and the layer thickened by electrolysis. Specifications 217,646 and 230,226, [both in Class 39 (i), Electric lamps, Arc &c.], are referred to.
Patent GB-706735-A (GB)
Title: Dyeing process
IPC: D06P3/44
Filed: 1951-12-05
Abstract: Textile materials of cellulose esters and ethers are dyed by forming a water-insoluble azo dye from a diazotizable amine and an enolic coupling component already present in the fibre, and thereafter subjecting the materials to treatment with a swelling agent for the cellulose derivative.  Swelling agents specified are ethyl alcohol, monobutyl ether of ethylene glycol, monobutyl ether of diethylene glycol, diacetone alcohol, triethyl phosphate, isopropyl alcohol, acetone, glycerol-formal, the monomethyl ethers of ethyleneglycol and diethyleneglycol, methylethyl ketone and pyridine and the treatment may consist of a treatment with a vapour of a swelling agent or an aqueous solution of a swelling agent.  In examples (1) cellulose acetate yarn is treated with a dispersion of a mixture of 4-benzoyl-amino-2, 5-diethoxyaniline and the anilide of 2, 3-hydroxynaphthoic acid, diazotized with sodium nitrite and acetic acid, and then treated in a bath containing soap and monobutyl ether of diethyleneglycol; (2) cellulose acetate fabric is dyed as in (1) and then treated firstly with soap solution and then with aqueous ethyl alcohol; (3) cellulose acetate fabric dyed as in (1) and treated with aqueous ethyl alcohol; and (4) cellulose acetate fabric dyed as in (1) is exposed to the vapours of ethyl alcohol at 80 DEG C.
Patent GB-261403-A (GB)
Title: A clamping ring for securing flexible tubes to metallic couplings or connections
IPC: F16L33/14
Filed: 1926-11-12
Abstract: 261,403. Vulitch, V. A. de. Nov. 12, 1925, [Convention date]. Clips, band.-The end of a flexible tube 2, Fig. 4, is clamped on a rigid coupling 3 by a band 1 wrapped one or more times round the tube and tensioned and locked by a clamp 9, the metal band 1 having one end bent over a central crossbar 4 and the other end engaged by two split pins 7, 8 housed in loops 5. 6 in the clamp. The pins may have heads with eyes for a tommy-bar, polygonal-shaped for a wrench, or slotted for a screw-driver. Rotation of pin 7 tensions the hand while rotation of pin 8 locks it. Two clamps may be connected by a central pin 10, Fig. 6. The clamp may be formed from wire, as shown, or from sheet metal bent transversely or longitudinally.
Patent GB-300002-A (GB)
Title: Improvements in elastic fluid turbines
IPC: F01D5/26
Filed: 1927-10-27
Abstract: 300,002. General Electric Co., Ltd., and Pochobradsky, B. Oct. 27, 1927. Drawings to Specification. Axial-flow type.-In an elastic fluid turbine, the impulses delivered by the fluid are so distributed by the arrangement of the blades or nozzles that the vibrational energy imparted to a vibrating member by the impulses at one time is substantially destroyed by the impulses delivered to the same member at another time. In annular flow turbines, the result may be secured by varying the circumferential pitch of the fixed or moving blades in a ring at one or more points. In partial admission turbines, the distance between neighbouring pairs of nozzles may be varied, or the distance between the entering and leaving points of neighbouring groups of nozzles may be varied.
Patent GB-519881-A (GB)
Title: Improvements in carbon dioxide fire extinguishers
IPC: A62C99/00
Filed: 1938-10-01
Abstract: 519,881. Fire-extinguishing. CARDOX (GREAT BRITAIN), Ltd., (Cardox Corporation). Oct. 1, 1938, No. 28603. [Class 47 (ii)] A carbon - dioxide extinguisher designed to discharge a dense cloud of gas, mixed with fine particles of snow, at low temperature and at a velocity sufficiently low to avoid entrainment of air, has a discharge head 36 comprising a block 37 with a plurality of passages 38, a ring 39, and a porous, rigid, block 40, for example a vitrified silicate-bonded, grinding wheel. The carbon - dioxide container 5 is elongated so that it may be held at one end while the head is held near the fire. It communicates with the passages 38 by way of a passage 11 with a gravity valve 20, and of a dip tube 19 and passages 12, 13, 15, 16, so that liquid carbon-dioxide is supplied to the head whatever the position of the container. The control valve 24 is biased to open position by a spring 26, and is closed by a screwed stem 29 acting through a thrust button 30 and sealing diaphragm 27. A safety diaphragm 34 is provided. When the valve 24 is opened, the resistance of the block 40 maintains such an internal pressure that the passages 38 &c. cannot freeze up, while the gas escaping from the block drops to atmospheric pressure, causing snow formation. and a low-velocity discharge.
Patent GB-810148-A (GB)
Title: A guard for use on a perambulator
IPC: B62B9/24
Filed: 1956-09-19
Abstract: 810,148. Perambulators. BERNCASTLE, F. M. Sept. 17, 1957 [Sept. 19, 1956], No. 28609/56. Class 108(1) A ,guard for a perambulator has the form of a pen and occupies the space existing in front of the raised hood of the perambulator and above the perambulator body not covered by said hood, said guard comprising a framework having infant-retaining walls except where exposed to the interior of the hood. U-shaped base and top frame members 1 and 4 are joined at their ends to a further upright U member 2 by pieces 3 and 5 respectively. Bars 6 connect the upper and lower frames the bars at the ends being inclined inwardly to prevent the baby moving to an unstable position of the perambulator. The framework rests on the side walls of the body 7, the slotted pieces 3 being engaged and clamped on the pivots 8 of the hood, a tag 10 also engages a stud at the end of the body.
Patent GB-860729-A (GB)
Title: Method for desulphurizing iron
IPC: C21C1/02
Filed: 1958-09-05
Abstract: Iron produced by the reduction of ores with a solid carbonaceous reducing agent without sintering or melting is desulphurized by adding a desulphurizing agent to the hot reaction mixture at 1150 DEG C.-1000 DEG C. and gradually cooling in a neutral or reducing atmosphere for at least 1/2 hour at between 1100 DEG C. and 800 DEG C. 1-10% of limestone or dolomitic limestone having a particle size of less than 1mm. may be used as desulphurizing agent and cooling may take place in a rotary cooler for 45 minutes.  The reduction may be carried out in a rotary furnace to which no lime is added, operated at the highest temperature compatible with the avoidance of sintering.  After the completion of cooling, the desulphurizing agent and excess reducing agent are removed from the iron by sieving and/or dry magnetic separation, the desulphurizing agent and the solid reducing agent then being separated from each other by washing. Specification 754,453 is referred to.