baber/WOPTO huggingface dataset:
Patent GB-555070-A (GB)
Title: Improvements in repairing rubber articles such as pneumatic tyres
IPC: B29C35/02
Filed: 1942-01-30
Abstract: 555,070. Retreading tyres. DUNLOP RUBBER CO., Ltd., KING, F. G. W., and BULGIN, D. Jan. 30, 1942, No. 1279. [Class 70] [Also in Group XI] Tyres are re-capped or re-treaded by superposing a vulcanized tread on an intermediate layer of electrically conductive rubber with bonding layers of vulcanizable rubber which are vulcanized by passage of electric current through the conductive rubber. The intermediate layers may be formed by a band or ring of vulcanized rubber containing acetylene black or other conductive carbon black covered with thin sheets of vulcanizable rubber or with coats of solution ; or the band may be vulcanized to the tread. The band may be thin at the edges to increase the heating effect and may have transverse metallic elements embedded therein. The vulcanizing may be effected while the tyre casing is enclosed in a ring and is inflated to apply pressure.
Patent GB-574256-A (GB)
Title: Improvements in and relating to domestic appliances
IPC: A47B3/02
Filed: 1944-01-24
Abstract: 574,256. Convertible furniture. BENDELL, D. Jan. 24, 1944, No. 1289. [Classes 52 (iii) and 52 (v)] A folding table convertible for use as a clothes horse comprises two pairs of legs 1, 2 pivoted at 3 and having at their upper ends two pivoted frames 8, 9 to serve as a clothes horse. When not in use as a clothes horse a table top 11 is provided to rest upon the upper ends of the legs.
Patent GB-214691-A (GB)
Title: Improvements in recuperators for furnaces and blocks for building the same
IPC: F28F21/04
Filed: 1923-01-15
Abstract: 214,691. Posnack, E. R. Jan. 15, 1923. Bricks, special shapes of. - Hollow recuperator blocks are provided on one face with an open-sided channel around the three walls of which extends an enclosed open-ended passage. The respective ends of the passage are formed with male and female. joints as shown in Fig. 7. The corners adjacent the side opposite to the channel may be cut away as shown in Fig. 17, and the ends of the enclosed passages may be inclined. Blocks as shown in Fig. 9 are employed at the sides of the recuperator.
Patent GB-1166552-A (GB)
Title: Apparatus for Winding Tape on to Tubes and other Elongated Bodies
Inventor: STANLEY FRANK HUBERT
IPC: H01F41/12
Filed: 1966-01-11
Abstract: 1,166,552. Covering cores by winding. BRICO ENG. Ltd. 7 Dec., 1966 [11 Jan., 1966], No. 1339/66. Heading B8G. Tape 24 is wrapped helically round the body 12 by an apparatus comprising a housing 9 having centrally apertured drum 10 through which the body 12 passes, a tape supply 13 rotatable on the drum 10 about an axis parallel to but spaced from the drum axis, a feed roller 14 for moving the body 12 through the drum 10, and a power unit 15 carried by the housing 9 for rotating the drum 10 and the feed roller 14, the roller 14 and the drum 10 having predetermined relative speeds. The tape is led through a slot in the periphery of the drum, then partially around the drum before being fed into another slot in the periphery of the drum and thence on to the body 12. The tape may be tensioned by a spring-loaded blade 25. The drum 10 can be made in two separable parts so that it can be fitted over an endless ring or the like.
Patent GB-765510-A (GB)
Title: Method of producing amino-nitriles having therapeutic action
IPC: C07D295/145
Filed: 1955-01-17
Abstract: The invention comprises: (a) aminonitriles, containing two asymmetric carbon atoms in the molecule, of the general formula <FORM:0765510/IV(b)/1> (wherein either R1 represents a 1-methylpropyl group and R2 a b -dimethylaminoethyl, b -diethylaminoethyl or b -piperidinoethyl group, or R1 represents an isopropyl group and R2 a 1 - methyl - 2 - dimethylamino-, - diethylamino-or -piperidino-ethyl group), and salts thereof; (b) the production of compounds of the above general formula in which R1 is 1-methylpropyl and R2 is -CH2.CH2.Am (Am being a dialkylamino or cyclic amino group) by reacting an a  - (1 - methylpropyl) - a  - (b  - haloethyl)-phenylacetonitrile with a dialkylamine or secondary heterocyclic nitrogen base; (c) the production of compounds of the above general formula in which R1 is isopropyl and R2 is -CH(CH3).CH2.Am by reacting a -(isopropyl) -phenylacetonitrile with a b -tertiary aminoisopropyl halide.  In examples: (1)-(3) a -(1-methylpropyl) - a  - (b  - bromoethyl) - phenylacetonitrile is heated with (1) piperidine in benzene under reflux; (2) dimethylamine in benzene in a bomb tube at 100 DEG  C., and (3) diethylamine in a bomb tube at 120 DEG  C.; (4)-(6) a -(isopropyl)-phenylacetonitrile is refluxed with sodamide in benzene and the product is boiled with (4) 3-diethylamino-2-propyl chloride; (5) 3-piperidino-2-propyl chloride; and (6) 3-dimethylamino-2-propyl chloride.  The products possess analgesic and spasmolytic properties.  Starting materials.  a -(1-Methylpropyl)-a -(b -haloethyl) -phenylacetonitriles are produced by the action of alkylene dihalides (e.g. ethylene bromide) on a -(1-methylpropyl)-phenylacetonitrile in the presence of sodamide. Specification 501,135, [Group IV], is referred to.ALSO:Aminonitriles, containing two asymmetric carbon atoms, of the general formula <FORM:0765510/VI/1> wherein either (a) R1 represents a 1-methylpropyl group and R2 a b -dimethylaminoethyl, b -diethylaminoethyl or b -piperidinoethyl group, or (b) R1 represents an isopropyl group and R2 a 1-methyl-2-dimethylamino-, -diethylamino-or-piperidino-ethyl group, possess both analgesic and spasmolytic properties.  In class (a), the compound  -(1-methylpropyl)- -(b -piperidinoethyl)-phenylacetonitrile also possesses potentizing properties in combination with phenacetin, 1-phenyl-2:3-dimethyl-4-dimethylaminopyrazolone-(5) or barbiturates, and the compound  -(1-methylpropyl)- -(b -dimethylaminoethyl) -phenylacetonitrile in combination with phenyldimethylpyrazolone methylaminomethanesulphonate of sodium, whilst both further exhibit local, conductive and endoanm\9sthetic action. Specification 501,135 [Group IV] is referred to.
Patent GB-699826-A (GB)
Title: Improvements in and relating to pianos
IPC: G10C3/24
Filed: 1951-01-18
Abstract: 699,826. Pianofortes. GUICHARD & CIE. (MAISON ERARD). Jan. 18, 1951 [Jan. 18, 1950], No. 1411/51. Class 88 (ii). In a repetition action for an upright pianoforte, the pivotal axis of each hammer passes through that part of the hammer butt 10 which is furthest from the associated string and the jack 8 is arranged to engage the butt at a point above this axis, the hammer return spring 18 being in engagement with that part of the butt which is nearest the string. Various arrangements of the repetition spring 14 are shown in Figs. 1, 3, and 4. The back check 23 may be pivoted to the wippen 5 and acted upon by one arm of the repetition spring, Fig. 3. Each key 1 has a depending tail which acts on the wippen 5 either vertically, Fig. 1, or horizontally, Fig. 5. The keys may be pivoted on a common horizontal rod 49, Fig. 5. The action and keyboard are mounted on a common frame which is slidable sideways under the control of the soft pedal.
Patent GB-776308-A (GB)
Title: Improvements in or relating to circuit arrangements for providing a d.c. output
Inventor: LIGHT LEON HENRY
IPC: H02M3/338
Filed: 1955-01-18
Abstract: 776,308. Rectifying. MULLARD RADIO VALVE CO., Ltd. Dec. 8, 1955 [Jan. 18, 1955]. No. 1515/55. Class 38 (2). An E.H.T. generator comprises a relaxation oscillator employing a junction transistor together with means for preventing the output voltage from exceeding a predetermined value. When the voltage from a D.C. source such as a battery 5 is suddenly applied to a junction transistor 1 the transistor will conduct and allow current to flow through the primary winding 6 of a transformer 7. The increasing current through this winding produces a negative voltage at the end of a secondary winding 8 which is connected to the base 3 of the transistor thereby causing sufficient emitter-base current to flow to make the voltage drop between the collector 4 and emitter 2 of the transistor very low. Thus substantially the whole of the applied D.C. can be regarded as applied to the primary winding 6 thereby producing a linear rise of current therein and hence a constant voltage across the secondary winding 8 with the result that a certain, constant base current flows, corresponding to which current the transistor will have a relevant curve in its collector-current versus collector-voltage characteristic. When the collector current reaches the knee of this curve the voltage across the transistor rises and thus there will be a reduction in the rise of the collector current. Because of the transformer 7 the base current will now decrease causing a further decrease in collector current whereupon a positive voltage is generated in the secondary winding 8 thus cutting off the transistor. A large voltage will appear across a further secondary winding 13 of the transformer 7 which voltage is rectified by a rectifier 10 and applied to a load 12. At the end of the decay period the transistor 1 reconducts and the cycle repeats so that the circuit is self-oscillating. The energy taken from the D.C. source is substantially constant, thus the voltage across the load will be dependent upon the magnitude thereof. To confine this voltage to a predetermined value a neon tube 14 is arranged to ignite at this predetermined value so that current will flow through resistors 9, 15 whereby a positive voltage will be applied to the base 3 of the transistor causing the transistor to be cut off. The positive voltage so produced will now decay and the neon tube will be extinguished. By judicial choice of the values of the condenser 11 and the resistors 9, 15, the time constant will be such that the oscillations will not recommence. In order to restart the oscillations the transistor must be shockexcited, for example by the removal and sudden re-application of the D.C. supply 5. In an alternative arrangement the neon tube may be replaced by a gas discharge triode, by the use of which adjustment of the predetermined voltage which is applied to the load 12 may be made. Specifications 769,445 and 771,003, [Group XL (c)], are referred to.
Patent GB-723988-A (GB)
Title: Improvements in or relating to supports for textile spindles
Inventor: GATLING ANTHONY DAVID
IPC: D01H7/10
Filed: 1952-01-19
Abstract: 723,988. Bearings. DUNLOP RUBBER CO., Ltd. Nov. 28, 1952 [Jan. 19, 1952], No. 1576/52. Class 12 (1) A textile spindle is mounted in an upper roller bearing 3 and a lower ball bearing 2 carried in a cylindrical member 4 whose outer surface tapers from a region adjacent the upper bearing to a region intermediate the bearings, and this tapering portion is mounted in a surrounding cylindrical bolster 14 by means of an intermediate rubber bush 12. An end cap 7 secured to the lower end of the member 4 holds the outer race 6 of the bearing 2 in position. The interior of the member 4 contains lubricating oil.
Patent GB-590801-A (GB)
Title: Improvements in or relating to valves for cisterns and the like
IPC: F16K31/30
Filed: 1945-01-19
Abstract: 5 9 0, 8 0 1 . Float - actuated valves. SUTTON, C. J. Jan. 19, 1945, No. 1621. [Class 135] In a float-controlled cistern valve of the kind described in Specification 567,894, the flow of water into the cistern is regulated by a slotted tube H, Fig. 2, mounted on the tube B carrying the mushroom valve A and slidable in a head F having ducts J communicating with the inlet D. When the cistern is empty, the water flows through the ducts J and the ports h<1>, h<2> in the tube H into the chamber E and thence through the ports b<2> into the cistern. In a modification, the tube is replaced by a slotted plate H, Fig. 4, loosely connected to the mushroom valve A which coacts with a seat a<1> on the chamber. In another arrangement, the tube is formed with ports h<1> Fig. 7, adapted to comruunicate with an inlet D. Specification 12718/97, [Class 135], also is referred to.
Patent GB-620446-A (GB)
Title: Improvements relating to gas-turbine-engines
IPC: F02K1/04
Filed: 1947-01-17
Abstract: 620,446. Gas turbine plant for jet-propulsion. LOMBARD, A. A., and OULIANOFF, G. Jan. 17, 1947, No. 1639. [Class 110(iii)] In a gas turbine plant for jet propulsion of aircraft, the diametral rods 20, Fig. 2, which support the conical structure 12 within the exhaust duct shell 11, are enclosed in fairings 25. The fairings have a stream-line shape along the lines of flow and the walls 25a, 25b are curved transversely as shown in Fig. 3. The walls are welded to end plates 29. The rods are secured to bushes 22 on the shell 11 and pass through bushes 30 on the end plates 29 and bushes 24 on stiffening members 14 of the conical structure and on central tube 17. The tube 17 is secured at one end to a flexible flange 18 and at the other end is a sliding fit in the boss 19 of a stiffened disc 16 which supports a heat shield 15.
Patent GB-811043-A (GB)
Title: Improvements relating to the manufacture of steel
IPC: C21C5/32
Filed: 1957-01-16
Abstract: A process for producing steel comprises desulphurizing pig iron under reducing conditions and in the presence of nitrogen to a sulphur content below 0.013 per cent and refining the desulphurized pig by blowing with a gas containing oxygen and nitrogen until at least 80 per cent of the carbon is removed, and voluminous carbon monoxide produced to remove nitrogen and maintain the sulphur content of the final steel at less than 0.013 per cent.  The desulphurizing process may comprise blowing with nitrogen in the presence of a desulphurizing agent and the refining is preferably performed by surface blowing with a gas containing at least 96 per cent oxygen at a pressure of 50-175 p.s.i. gauge, to a carbon content of less than 0.10 per cent.  If scrap is used during the refining process the sulphur content thereof should be suitably low, preferably below 0.013 per cent. The slag should have a lime/silica ratio of 2 to 3.5 to 1, the total lime plus silica being equal to at least 50 per cent and FeO plus MnO between 25 and 40 per cent.  Specification 609,850 is referred to.
Patent GB-1526611-A (GB)
Title: Hologram capable of being reconstructed with white light and a system for recording the same
IPC: G03H1/04
Filed: 1977-01-17
Abstract: 1526611 Holograms FUJI PHOTO OPTICAL CO Ltd 17 Jan 1977 [20 Jan 1976] 17102/77 Heading G2J A hologram capable of being reconstructed with white light is produced by simultaneously recording a first hologram wherein the reference beam interferes with a first uni-directional image of the object, said first image being focused in the holographic plane; and a second superposed hologram wherein the same reference beam interferes with light from a second unidirectional image of the object, the second image being perpendicular to said first uni-directional image and being focused a short distance in front of the said holographic plane, It is stated that the first component records 'image' information and that the second component records parrallax information. From the theory it is shown that the reconstruction is relatively insensitive to wavelength, thereby allowing reconstruction with white light. As shown, Fig. 1, the uni-directional images are produced by mutually perpendicular cylindrical lenses 3A, 3B.
Patent GB-658657-A (GB)
Title: Process for the recovery of precious metal values
IPC: C22B11/00
Filed: 1949-01-21
Abstract: Char containing adsorbed gold and/or silver values, as obtained from cyanide pulp, is contacted with a water-ammonia solution containing more than 28 per cent by weight ammonia, and the solution containing the desorbed metals is separated from the char, which after washing is suitable for re-use.  Ammonia gas is introduced into the treatment chamber containing the char and water or weak ammonia solution until a pressure of 80-120 p.s.i. absolute or more is attained and maintained at a temperature of 40-90 DEG  F.  When desorption is complete, ammonia is recovered by boiling and release of pressure, and the char separated from the liquid containing gold and silver ammines.  The metals are precipitated from the solution by zinc or aluminium powder, and an activator consisting of sodium or potassium cyanide, or caustic soda respectively.  If the char is magnetic, it may be separated magnetically from the liquid instead of by filtering or screening.
Patent GB-196378-A (GB)
Title: Automatic motor car warning and signalling device
IPC: B60Q1/34
Filed: 1922-01-21
Abstract: 196,378. Georgoulas, E. Jan. 21, 1922. Road-vehicle signals; semaphore signals; bell signals.- A direction indicator comprises a pointer 11 on a shaft 13 rotated by a torsional spring 12 upon depression of the actuating rod 3, which by means of a projection 18 thereon releases a catch 20 normally holding a pivoted half disc 24 attached bv a cord 16 to an elbow 15 on the shaft 13. The actuating-rod also operates through a link 6 a bell 9, which may be sounded independently by only partially depressing the actuating rod. The pointer is returned to normal position by means of an arm 22 attached to the half disc 24.
Patent GB-606619-A (GB)
Title: Electrically-heated water container
IPC: F24H1/20
Filed: 1946-01-19
Abstract: 606,619. Electric water heaters. WIGELAND, A. R. Jan. 19, 1946, No. 1903. Convention date, Feb. 10, 1941. [Class 39(iii)] [Also in Group XIII] In an electric water heater wherein the water is heated in a compartment separate from the hot water container proper, the water level in the separate compartment is independent of that in the container and is maintained substantially constant by means of a diaphragm actuating a supply valve. Water from the mains supply enters at 33 and passes by way of a valve compartment 22 through holes 18, 17 into a tube 12 until the head of water in tubes 6, 12 reaches a certain value when the pressure of water on a flexible diaphragm 20 closes the valve to cut off the supply of water. The water in the tube 12 is boiled by means of an electric heating element 15 and some is ejected through tubes 4 into the container 10, thereby reducing 'the pressure on the diaphragm 20 and allowing a spring 30 to open the valve and permit the entry of more water until the former level is restored. When the water in the container 10 reaches a level marked 35, a circulation of water takes place through a tube 5 into the compartment 11. Tubes 7 and 32 allow the escape of steam and maintain the pressure inside the heater equal to the external atmospheric pressure. The heater wire is coiled on a steatite cartridge 15 enclosed in a watertight metal jacket 16 depending by a pipe 14 from a wider part 3 held by a bayonet catch 2. One or more outlets 34 are provided.
Patent GB-323384-A (GB)
Title: Improvements in or relating to pressure plates or pads for photographic cameras
IPC: G03B1/48
Filed: 1929-01-19
Abstract: 323,384. Houghton-Butcher Manufacturing Co., Ltd., Denniss, A. J., and Edwards, V. W. Jan. 19, 1929. Cameras, roll-film.-In a roll-film camera, a. pressure plate, normally held away from the film by springs, is moved into contact therewith by operation of the shutter release, and is returned to the normal position when the shutter release is freed. In' the form shown, operation of the shutter release 1 rocks the lever 2, which is pivoted at 3 and carries studs 9 and 4. The stud 9 rocks the lever 11 about its pivot 12. The nose 13 then presses against the end 14 of a lever 15, Fig. 6, which, acting through a spring 17, operates the pressure plate 16; and the latter is held in position by the engagement of a catch 24 on the spring-urged slotted bar 25 with a shoulder on the lever 11. The stud 4 then lifts the pawl 6, releasing the toothed wheel 7 which is in mesh with the shutter blind roller (not shown), an exposure being effected. For an instantaneous exposure, the wheel 7, which is geared to the shutter-blind roller and film-carrying roller as described in Specification 328,952, is turned until the stud 37 is below the arrow, Fig. 2, the shutter blind then being set and the film in position. When the shutter blind unwinds to make an exposure, the wheel 7 rotates in the reverse direction, and near the completion of this movement the stud 37 engages with an extension 28 of the slide 25, lifting the catch 24 and releasing the pressure plate. For a time exposure, the wheel 7 is wound until the stud 37 contacts with the cam 31 causing the lever 30 to rock about its pivot 29 against the action of the spring 35. On the first operation of the shutter release, a projection 2<b> on the lever 2 engages the arm 32 and retains the lever 30 in the inward position. The pawl 6 being lifted, the wheel 7 rotates until the stop 38 engages the underside of the lever 30. On freeing the shutter release, the pawl 6 re-engages the wheel 7, thus continuing the exposure, and the lever 30 returns to its outward position. On finally operating the shutter release, the wheel 7 further rotates to complete the exposure, the stud 37 lifting the slide 25 and releasing the pressure plate as above.
Patent GB-972423-A (GB)
Title: Process for production of bromo-fluoro-ethanes
IPC: B01J27/06
Filed: 1963-01-16
Abstract: Fluorinating agents of general overall formula SbF4Cl are prepared by mixing and heating SbF5 with SbCl5 in a molar ratio of from 3 : 2 to 4.5 : 1 (preferably about 4 : 1), at 70-100 DEG  C.  Reference has been directed by the Comptroller to Specification 861,882.ALSO:Bromofluoroethanes are prepared by reacting a bromofluoroethane starting material with HF and Cl2 in the presence of antimony fluorochloride containing pentavalent antimony. Preferred reaction conditions are a molar ratio of HF to starting material of from 1:1 to 10:1 and of Cl2 to starting material of from 0.5:1 to 5:1, a temperature of 70-150 DEG C. and a pressure of 90-400 psi. In examples (1) CF3CHBr2 produces CF3CHBrF, and (2) CF2Br CHBr2 produces CF2Br CHBrF; this may be further fluorinated to CF3 CHBrF, which is an anaesthetic.  Reference has been directed by the Comptroller to Specification 861,822.