baber/WOPTO huggingface dataset:
Patent GB-816594-A (GB)
Title: Shaft sealing device
IPC: F16J15/40
Filed: 1957-10-28
Abstract: 816,594. Stuffing-box substitutes. ALLMANNA SVENSKA ELEKTRISKA A.B. Oct. 28, 1957 [Oct. 29, 1956], No. 33497/57. Class 122 (5). The shaft 1 of an electric generator operating in a hydrogen-filled casing is sealed by means comprising a flange 5 integral with the shaft and a sealing ring 6, mounted in the casing wall 2, axially urged towards the flange and provided on its face facing the flange with concentric ridges 10, 11 and radial ridges 12 therebetween forming spaces 13 which are fed with pressure oil, each through its own channel 14, from a common oil source. The sealing ring 6 is in the form of a differential piston sealed to the wall 2 by packing rings 19, 20 and is urged toward the flange 5 by springs 7 and by the pressure of oil supplied through a channel 18 to the space 17 between the ring and the wall. Oil is supplied from the space 17 through restrictions 15 in the channels 14 to the spaces 13 and escapes radially therefrom through the clearances 27, 28 between the ridges 10, 11 and the flange. The sealing ring 6 is supported by a roller 23 that is journalled in a forked member 24 attached to the wall 2 and engages a slot 25 in a part 26 attached to the ring which is thereby held against rotation whilst being free to move axially. The spaces 3 and 4 are subject to hydrogen pressure and atmosphere respectively.
Patent GB-1000158-A (GB)
Title: Improvements in sheet-gripping mechanisms for sheet-conveying machines
Inventor: HANSKE MANFRED
IPC: B41F21/10
Filed: 1962-08-31
Abstract: 1,000,158. Printing machines. DRUCKMASCHINENWERK PLANETA VEB. Aug. 31, 1962, No. 33509/62. Heading B6C. In a sheet-gripping mechanism for a sheet-fed printing machine " sliding," that is, lateral displacement between the gripping surfaces of the mechanism, is prevented by constructing the mechanism in such a manner that the resultant reaction force 8, Fig. 1, on the bearing surfaces 7 of a lever 3 is at an angle to the centre line 13 through the centre of the shaft 1 and the centre of the tongue 6 and this angle is substantially the same for any position of the lever 3 on the shaft. The mechanism comprises the shaft 1, Fig. 4, a retaining member 2, having flanges 2A, non-rotatably mounted on the shaft and a lever 3 resiliently mounted on the member 2. The flanges 2A are secured together by a screw 16 and a lock-nut 17, a spring 4 being located between the screw-head and a plate 18 carried by the lever 3. This spring urges the lever 3, which has an internal U-shape to facilitate ready slidable mounting or removal on or from the shaft 1, in a clockwise direction as viewed in Fig. 4. An adjustable screw 19 forming an abutment, which is secured to the lever 3, is normally urged against a support surface 5 of the member 2. When the shaft is rotated into the position of Fig. 1, the gripper tongue 6 comes into contact with a sheet situated on the gripper impact surface 6A, Fig. 1, the screw 19 thereby disengaging from the surface 5 whilst the spring 4 urges the tongue 6 against the surface 6A.
Patent GB-640479-A (GB)
Title: Improvements in preparation of ketones
IPC: C07C45/00
Filed: 1947-12-19
Abstract: Liquid ketones of formula R.CO.(CH2CH2)n.H, where n is 1-6 and R is n or sec.-alkyl, cycloalkyl, or aralkyl of 1-7 carbon atoms, are prepared by reaction of ethylene with the appropriate aldehyde RCHO at 200-2500 p.s.i. in presence of a catalyst and at a temperature which will decompose the catalyst to give free radicals, the molar ratio of aldehyde to ethylene being from 0.3 : 1 to 5 : 1.  Specified reaction temperatures are in the range 25-150 DEG  C., and specified values for R are heptyl, cyclohexyl and benzyl.  The catalysts specified are peroxygen-compounds, hydrazine derivatives and tetraethyl lead. An inert diluent may be used.  In the examples, ethylene is reacted with acetaldehyde and with n-butyraldehyde to give ketone mixtures including some higher ketones.  Specification 583,181 is referred to.ALSO:Liquid ketones of the formula <FORM:0640479/IV (b)/1> where R is n- or sec.-alkyl, cycloalkyl or aralkyl of 1-7 carbon atoms and n is 1-6, are prepared by the treatment of a n-alkanal, sec.-alkanal, cycloalkanecarboxaldehyde or an aralkanal containing 2-8 carbon atoms with ethylene in the presence of a catalyst which will decompose to give free radicals, at pressures from 200 to 2500 lb. p.s.i. and at a temperature which will decompose the catalyst, e.g. one in the range 25-150 DEG  C., and where the molar proportion of aldehyde to ethylene is from 0.3 : 1 to 5 : 1.  Specified aldehydes are isobutyraldehyde, octaldehyde, cyclohexylformaldehyde and phenylacetaldehyde.  Suitable catalysts are acyl and alkyl peroxides, hydrogen peroxide, per-salts such as perborates, hydrazine derivatives, and organo-metallic compounds, e.g. tetraethyl lead.  The amount of catalyst is about 0.5-15 mol. per cent of the ethylene.  An inert diluent may be used.  In the examples: (1) acetaldehyde is treated with ethylene in the presence of dibenzoyl peroxide to give a mixture of methyl ethyl ketone, methyl n-butyl ketone, n-hexyl ketone, and some higher ketones; (2) n-butyraldehyde is treated similarly to give n-propyl ethyl ketone, n-butyl-n-propyl ketone and some higher ketones.  Specification 583,181 is referred to.
Patent GB-1199916-A (GB)
Title: Winding Drum Feed Device
Inventor: DURRANS JACK
IPC: B66D1/36
Filed: 1966-07-27
Abstract: 1,199,916. Guiding cables on to winding drums. THOMAS SMITH & SONS (RODLEY) Ltd. 26 Oct., 1967 [27 July, 1966], No. 33753/66. Heading B8B. A device for guiding a rope 26 from a fixed frame pulley 8 on to a winding drum 10 comprises a radius arm 16 pivotally mounted at 22 adjacent the periphery of the pulley 8 to allow a reeving pulley 42, over which the rope passes between the pulley 8 and the drum 10, to transverse the width of the drum 10 under the tension of the rope being wound on to the drum. A pair of rollers 36 at the free end of the arm 16 engage a frame member 2X to react against the tension of the rope 26. The radius arm 16 has bifurcated lugs 18 at its upper end, between which is mounted the pulley 8, a hollow section 24 through which the rope passes, and a cranked lower portion in which the reeving pulley 40 is mounted.
Patent GB-975446-A (GB)
Title: Mirror objective particularly suitable for photographic purposes
IPC: G02B17/08
Filed: 1961-09-21
Abstract: 975,446. Mirror objectives. CARL ZEISS-STIFTUNG, [trading as CARL ZEISS]. Sept. 21,1961 [Sept. 24, 1960], No. 33765/61. Heading G2J. In a mirror objective of the kind having a secondary mirror of deeper curvature than the main mirror and the two connecting systems (each of two lenses) disposed one in front of the secondary mirror and one to the rear of the main mirror, 1. The lenses of each system are of different glass types; 2. The system to the rear of the main mirror is afocal with a focal length more than 150 f, where f is the objective's focal length; and 3. The system in front of the secondary mirror is of negative power and has a focal length less than 1. 5f. f. Optical data are given for one example of the objective shown in which the secondary mirror is formed on the rear surface of the front correcting system.
Patent GB-1032313-A (GB)
Title: Push-pull amplifier stage for simultaneous transmission of both stereophonic signals
IPC: H03F3/68
Filed: 1964-08-19
Abstract: 1,032,313. Stereophonic amplifier circuits. TESLA NARODNI PODNIK. Aug. 19, 1964 [Oct. 29, 1963], No. 33858/64. Heading H4R. An amplifier stage for simultaneous transmission of two stereophonically related signals comprises a pair of transistors of complementary conductivity type, one excited by a signal from a first channel and the other by a signal from the second channel, and each feeding a separate load and being supplied with power from a source connected between one supply electrode and the load, in which each terminal of one load is connected, so far as D.C. supply current is concerned, to a terminal of the second load having opposite polarity with regard to the supply current. At least one of the connections between the load terminals is accomplished by an inductive winding. Fig. 8 shows one embodiment in which the loads are connected in the collector circuits, the collectors being connetted directly together with the other terminals of the loads connected via an inductor. Other alternative forms have: Fig. 9 (not shown) the loads in the emitter circuits; Fig. 11 (not shown) collectors connected by an inductor; Fig. 12 (not shown) loads in emitter circuits and emitters connected by an inductor. Figs. 10 and 13 (not shown), one load in the emitter circuit, the other in the collector circuit with respectively one, or the other ends, of the loads connected together via an inductor; and Figs. 14, 15 and 16 (not shown) have the loads in the three alternative positions with both ends of the loads interconnected by inductors which may apparently be wound on the same core. An alternative form in which the stereo effect may be enhanced or reduced is shown in Fig. 18 in which the speakers for the two channels Rp and Rl may be adjusted to different tappings on the inductor and in which a speaker Rs is provided between the centre taps of the inductors to provide a sum signal. This embodiment may be modified by deleting one inductor and connecting points b<SP>1</SP>, s<SP>1</SP>, a<SP>1</SP> together, in addition the loads may be provided in the collector circuits, Fig. 17 (not shown).
Patent GB-1018742-A (GB)
Title: Detachable two-part flexible protective roof for open lifeboats
Inventor: KULIKOWSKY FERDINAND
IPC: B63B17/02
Filed: 1964-08-19
Abstract: 1,018,742. Flexible roof for open lifeboats. SCHIFFSWERFFF " NEPTUN " ROSTOCK VEB. Aug. 19, 1964, No. 33859/64. Headings B7A and B7S. A detachable two-part flexible roof for lifeboats comprising coverings 2 having commonly inflatable support tubes 1 attached thereto and secured over the gunwale 3 with their edges secured outboard on the hull 6 by means of eyes 4 and loops 5, has the upper ends 9 of the support tubes positively fitted together by means of sleeve-like collars 10. In screwpropelled boats the inflation medium is supplied through inflatable collective supply conduits 13 secured to the coverings but nesting freely on the gunwale 3, and in oar-propelled boats through conduits 11 under the gunwale with branches 12 extending through same for detachable connection to non-return valves in the bottom ends of the support tubes.
Patent GB-338750-A (GB)
Abstract: 338,750. Thomas, J. L. H. Dec. 6, 1929. Cycle trailers.-The trailer framework of a cycle or motor cycle comprises a rectangular base A of steel banding two angle iron uprights D, D<1>, coupling and strengthening members C<1>, C<2> arranged as shown and side wings or extensicns B carrying with the base slotted brackets E<4> for the wheel spindles.
Patent GB-353352-A (GB)
Title: Improvements in or relating to photographic film packs
IPC: G03B17/34
Filed: 1930-11-12
Abstract: 353,352. Photographic filmpacks. KODAK, Ltd., Kodak- House, Kingsway, London.-(Assignees of Sauer, H. A. ; Kodak Park, Rochester, New York, U.S.A.) Nov. 12, 1930, No. 33989. Convention date, Nov. 18, 1929. [Class 98 (i).] To protect the surface of the exposed films in photographic film packs from scratches whilst being drawn from the front to the rear compartment, the pack is provided with a safety cover 15 constructed, e.g. with shoulders so that when it is withdrawn by pulling on the tab it is retained with the rear edge 15a projecting slightly over the lower edge 4 of the exposure opening 6 and forms a smooth lining extending round the partition 9 and across the rear wall 2 of the pack.
Patent GB-1081527-A (GB)
Title: Improvements in or relating to colour television systems
Inventor: HOBBS WILLIAM EDWARD
IPC: H04N11/00
Filed: 1965-08-09
Abstract: 1,081,527. Colour television. MARCONI CO. Ltd. March 11, 1966 [Aug. 9, 1965], No. 33992/65. Heading H4F. In a television system which utilizes a luminance camera tube 2 and red, green and blue colour camera tubes 5, 9 and 8 the luminance tube is scanned at a substantially higher rate than the colour tubes. Thus the scanning is controlled by a synchronizing source 15 which supplied the same field synchronizing signal 16 to all the tubes, but supplies the line synchronizing signal 17 direct to tube 2 and via a divider circuit 18 to tubes 5, 9 and 8. The line scan rate of tube 2 is thus a multiple of the scan rate of the colour tubes. The preferred multiple is an odd multiple e.g. three, although reference is also made to the even multiples of two and four. In the particular system described conventional interlaced scanning is used at 50 fields per second, tubes 5, 9, and 8 being scanned with 405 lines and tube 2 with 1215 lines. The system comprises a closed circuit system suitable for use as a visual flight or missile simulator. The colour signals are applied to display tubes 10, 11 and 12 which project images on to one side of a display screen 13, whilst the luminance signal is applied to a black-and-white display tube which projects an image on the other side of the screen. Image saturation may be controlled by an arrangement X which varies the amplitude of the luminance signal over a low-frequency portion of the signal which has a bandwidth equal to that of the colour signals. The arrangement comprises a differential amplifier X2, one input of which receives the whole of the luminance signal via an amplifier X1 and the other input of which receives the low-frequency portion of the luminance signal via a low-pass amplifier X3 and adjustable potentiometer X4. The output difference signal is applied to display tube 14 via amplifier X5. Camera tube 2 comprises an image-orthicon, whilst camera tubes 5, 9 and 8 comprise photo-conductive tubes, e.g. vidicons.
Patent GB-810087-A (GB)
Title: Alkyl arylstearates and process of producing same
Inventor: ARTOZOUL JACQUES
IPC: C07C69/24
Filed: 1956-11-07
Abstract: The invention comprises alkyl arylstearates of general formula <FORM:0810087/IV (b)/1> where x + y = 15, Ar is aryl, R1 is hydrogen or an alkyl, cycloalkyl or alkyl substituted cycloalkyl group of 4-18 carbon atoms, or together with R2 is a divalent alkylene group containing from 4-18 carbon atoms and R2 and R3 are alkyl cycloalkyl or alkyl substituted cycloalkyl groups containing from 4-18 carbon atoms.  The compounds may be prepared in two stages.  In the first stage a substituted aromatic compound of the formula <FORM:0810087/IV (b)/2> is condensed with an hydroxystearate of the formula <FORM:0810087/IV (b)/3> where R4 is methyl or ethyl, in the presence of boron fluoride, the methyl or ethyl arylstearate so formed being hydrolysed to give the free arylstearic acid, which is then esterified with an alcohol of formula R3OH.  The first stage of the invention is preferably carried out at elevated temperatures, e.g. 120-180 DEG  C. in the presence of a dehydrating agent such as phosphoric acid, zinc chloride or phosphoric anhydride, in a proportion of 1/4 to 2 mols. per mol. of hydroxystearate.  The boron fluoride is preferably present in 1/2 to 3 mols. per mol. of hydroxystearate.  The methyl or ethyl arylstearate may be isolated by neutralizing the reaction mixture and then distilling it under reduced pressure.  The hydrolysis may be carried out by adding the methyl or ethyl amylstearate to a boiling solution of a strong base, e.g. caustic soda or potash, calcium or barium hydroxide, in an aqueous alcohol.  The mixture is kept at elevated temperature for a time and then cooled and acidified with e.g. 5 per cent aqueous hydrochloric acid when the liberated arylstearic acid separates out on top of the aqueous phase.  The esterification of the acid may be carried out in the presence of an acid catalyst such as sulphuric acid benzene sulphonic acid, or b -naphthylsulphonic acid, and an inert solvent such as benzene.  The excess water is azeotropically distilled off and the excess inert solvent evaporated.  Specified substituents Ar are phenyl or naphthyl and specified substituents for R1, R2 and R3 are butyl, hexyl, ethylhexyl, cyclohexyl, methylcyclohexyl, dimethyl cyclohexyl, ethylcyclohexyl, diethylcyclohexyl, bicyclodecyl, dodecyl, palmityl and stearyl. Examples are given of the preparation of 2-ethylhexyl dibutylphenylstearate, dodecyl 2-ethylhexylphenylstearate, butyl dodecylphenylstearate, butyl di-2-ethylhexylphenylstearate, 2-ethylhexyl bicyclododecylphenylstearate, butyl stearylphenylstearate, methylcyclohexyl cyclohexylphenylstearate, 2-ethylhexyl dodecylnaphthylstearate, stearyl tetrahydronaphthylstearate and their corresponding methyl compounds.
Patent GB-652265-A (GB)
Title: Apparatus for the analysis of fermentation
IPC: G01N7/22
Filed: 1947-12-23
Abstract: <PICT:0652265/III/1> <PICT:0652265/III/2> <PICT:0652265/III/3> Apparatus for treating yeasts in a sugary medium, checking the speed of a chemical reaction producing an evolution of gas or for carrying out an analysis of fermentation comprises a tank having an outer body 1 with heating means 3 therefor, an inner body 7 having walls apertured at 9 to allow the passage of gas to a distribution valve 26 for directing gas from the tank to a discharge (see Fig. 2), either directly or after first passing the gas through an absorption container 24, the arrangement being such that gas evolved by dough when placed in the tank, is alternately directed by the distribution valve first directly to the discharge recorder and secondly to the discharge recorder after passing through the absorption container, the gases flowing through the alternate circuits for equal periods of time, the discharge recorder giving a visual indication of the discharge of gases. The valve automatically stops this recording and produces a return to zero for example every 2 minutes.  By thus comparing the total volume evolved in a given time, to the residual volume after absorption in the same time, a constant analysis is obtained of the CO2 content of the gaseous mixture issuing from the tank.  As shown, the gas displaced passes through slot 9 into the annular space between 1 and 7 and into the collecting groove 10 connected via the valves 26, 25 to a container 12 and drives the liquid therein through the opening 13 into the tube 14 in which rides a float 15 connected by rods 16, 17 to the pen 18 which registers on the recording drum 21.
Patent GB-1171369-A (GB)
Title: Apparatus for Measuring Gas Density
Inventor: MARTIN JOHN
IPC: G01N9/20
Filed: 1967-07-26
Abstract: 1,171,369. Determination of gas densities; photo-electric arrangements. BP CHEMICALS (U.K.) Ltd. July 8, 1968 [July 26, 1967], No.34241/67. Headings G1A and G1S. In apparatus for determining the density of a gas of the type described in Specification 937, 827 in which the gas and a reference gas respectively circulate round hollow bulbs at the ends of a rigid bar pivoted at its centre of gravity and the force required to maintain the bar horizontal is measured, the restoring force is produced by at least one permanent magnet mounted on the bar and cooperating with an electromagnet. The position of the bar 1 with bulbs 2, 3 is measured by passing light from a source 11 along guides 8 and 9 to pass the upper part of bulb 3 and fall on photo-cell 13 and along guides 7 and 10 past the lower part of bulb 3 to a photo-cell connected in opposition to photo-cell 13. Any out of balance photo-cell current energizes coils 15, 16 co-operating with permanents magnets 6, 5 having opposite poles adjacent the bar. An ammeter 17 indicates the coil current as a measure of gas density. The magnets 5, 6 may be the opposite poles of a bar magnet parallel with the bar 1.
Patent GB-1505943-A (GB)
Title: Mounting of grinding wheels
IPC: B24D5/16
Filed: 1976-08-17
Abstract: 1505943 Abrasive wheels EDENVALE ENG WORKS (PTY) Ltd 17 Aug 1976 [11 Sept 1975] 34275/76 Heading B3D Grinding apparatus comprises a grinding wheel 2 mounted between two flanges 5, 6 on an arbor 3, and a washer 7 of resilient material, such as rubber, interposed between the wheel and each flange, the wheel being a clearance fit, so as to be free to adjust itself radially, on the arbor. The wheels is clamped between a fixed flange 5 and a clamping flange 6 of a bush 4 mounted on the arbor 3. Each washer 7 between the wheel and each flange consists of a layer 8 of neoprene between metal discs 9 and 10. The clearance between the inner periphery of the wheel and the bush permits radial flexibility of the wheel and is preferably about 0À25 mm. The arrangement is stated to reduce radial chatter and improve surface finish.
Patent GB-1474627-A (GB)
Title: Catalyst structure
IPC: B01J23/64
Filed: 1974-08-05
Abstract: 1474627 Exhaust gas catalyst INCO EUROPE Ltd 5 Aug 1974 [22 Aug 1973] 34349/74 Heading B1E [Also in Division C1] A supported catalyst for removal of noxious materials in I.C. engine exhaust gases is produced by (i) depositing a layer of chromium or a chromium-rich alloy onto a metallic substrate surface to provide a complete coating layer thereon; (ii) applying to the chromium layer a surface coating layer of a catalyst material active for oxidation of hydrocarbons and carbon monoxide and/or reduction of nitrogen oxides; and, (iii) heating the coated product in an oxidising atmosphere whereby the chromium layer is oxidised to form a chromium oxide layer between the surface layer and the metallic substrate which acts to inhibit reaction of the substrate with oxygen, nitrogen oxides or other combustion products of hydrocarbon fuel during use of the catalyst. The surface layer may comprise one or more Gp VIII metals or oxides or an alloy or mixture of one or more of these metals or oxides with one or more of Cu, Cr, V, Zn, Mo and W or their oxides, e.g. a Ni-Cu-Cr alloy, copper chromite, a mixture of Ru and Ir oxides or an iron-manganese oxide. The chromium may be electrodeposited as a layer 5 to 15 microns thick.
Patent GB-521730-A (GB)
Title: Improvements in or relating to control and protective systems for electrical apparatus
IPC: H02H7/00
Filed: 1938-11-25
Abstract: 521,730. Protective cut-out arrangements. REYROLLE & CO., Ltd., and TIPLADY, J. Nov. 25, 1938, No. 34351. [Class 38 (v)] A control unit comprising a circuit-breaker A<3> and trip coil A<4>, supplies apparatus J, for example machinery employed in mines or oil - refinery works, over separate gate-end switches P having retaining coils P<4> energized from relays R in a pilot circuit, provided the latter is sound and on voltage. The pilot circuit (comprising, for example, a conductor B<3> and sheath of the main cable, and also used for earthing the apparatus J) contains rectifiers T<1>, G' at the apparatus and control-ends, respectively, for permitting energization of relays R by alternate half-waves of current from transformer E, as described in Specification 521,807, the circuit being established at push-buttons T at the apparatus, or by a drum switch combined with a holding relay in one of the power leads, Fig. 2 (not shown), the latter arrangement preventing automatic restarting if a momentary failure of the supply or pilot circuit occurs. If an earth fault occurs on the pilot circuit, sufficient unidirectional current flows through rectifier G<2> and the relay G, which has a low current-setting, to make the circuit of trip coil A<4>. If an open circuit occurs in a branch pilot circuit, the appropriate relay R, which is of low resistance, will open, or prevent closure of, the associated switch P, and an open circuit on the common pilot circuit de-energizes both relays R. The pilot circuit can also be opened by overload devices in the main and branch power conductors, and an earth-leakage device in the main power conductor trips A<3> directly. Relays G, R are shunted by condensers to prevent sparking due to inductive surges on fault in the pilot circuit. In Fig. 2 (not shown), the coils P' are connected in the branch circuit between the switch P and isolator, the latter having backcontacts in the pilot circuit. The trip coil A<4> is energized from transformer E, the primary of which is on the supply side of the breakercontacts. In both arrangements, the supply may be controlled from the gate-end switch or from a third point, the rectifier-position being suitably modified.