baber/WOPTO huggingface dataset:
Patent GB-921538-A (GB)
Title: Substituted benzoquinones and hydroquinones
IPC: C07C46/10
Filed: 1959-10-01
Abstract: The invention comprises compounds of formulae:- <FORM:0921538/IV(a)/1> <FORM:0921538/IV(a)/2> wherein n is an integer from 1 to 5 and specifically the 2:3-dimethoxy-5-methyl-6-(31, 71-dimethyloctyl)- or -(31,71, 111-trimethyldodecyl)- or -(31-methylbutyl)- or -(31,71,111,151-tetramethylhexadecyl)- or -(31,71,111,151, 191-pentamethyleicosyl)-hydroquinones and benzoquinones. The compounds are prepared by reducing 2 : 3 - dimethoxy - 5 - methyl-benzoquinone to the corresponding hydroquinone using hydrogen and a palladium, platinum or Raney nickel catalyst or a reducing agent such as sulphur dioxide, sodium hydrosulphite, zinc and acetic acid or sodium borohydride.  The hydroquinone is condensed with an alcohol of formula:- <FORM:0921538/IV(a)/3> such as geraniol and nerol (n = 2), farnesol (n = 3) and 3-methyl-2-buten-1-ol (n = 1), or of formula <FORM:0921538/IV(a)/4> such as phytol, or of formula <FORM:0921538/IV(a)/5> such as 3,7,11,15,19-pentamethyl-1-eicosen-3-ol, to yield a substituted hydroquinone of formula <FORM:0921538/IV(a)/6> or <FORM:0921538/IV(a)/7> Specified condensing agents are potassium acid sulphate, zinc chloride, oxalic acid, boron trifluoride and aluminium chloride. The reaction is carried out in an inert solvent such as dioxane, ether or dimethoxyethane and in an atmosphere of nitrogen. The hydroquinone is oxidised with a mild oxidising agent such as silver oxide, ferric chloride or air to the corresponding benzoquinone which is purified by chromatography from a solution in hexane.  The benzoquinone is reduced catalytically in an inert solvent such as dioxane, ether, dimethoxyethane and hexane using hydrogen at an elevated pressure and palladium on charcoal, platinum, or Raney nickel as catalyst, to give the hydroquinone product.  This may be oxidised to the benzoquinone product using the mild oxidising agents specified above.  The preparation of the compounds specified above is described in examples.
Patent GB-962350-A (GB)
Title: Sifter drive
Inventor: MILLER RUFUS EDWIN
IPC: B07B1/38
Filed: 1961-09-18
Abstract: 962,350. Driving means for sifting apparatus. J. E. BAKER, and E. C. SCHROEDER. Sept. 18, 1961, No. 33396/61. Heading B2H. A sifting apparatus comprises a frame 1, a carrier 2 for sifting elements, disposed within the frame, crank-shafts 39 having main shaft portions 40 journalled one at each end of the frame to rotate on fixed vertical axes in bearings 45, 46, the main shaft portions 40 each having end shaft portions 41, 42 which are parallel to and offset from the respective main shaft portions 40, the end shaft portions being in vertical alignment, brackets 26, 27 and 28, 29 projecting from the carrier and journalled to the corresponding end shaft portions 41, 42 to support the carrier 2 for horizontal gyration in the frame 1 as the end shaft portions rotate around the main shaft portions 40, arms 65, 66 extending from the two corresponding end shaft portions 41, and pivotally connected one to each end of a tie bar 64 to rotate one of the crank-shafts 39 from the other, a counterbalance means e.g. weight buckets 76 carried by each of the main shaft portions 40 to balance thrusts imparted by the gyration of the carrier 2 and an electric motor 5 to rotate the said other end of the crank-shafts, through a pulley 85 and a belt 86. The main and end shaft portions 40 and 41, 42 respectively overlap and are held in position by clamps comprising two blocks 50, with grooves for the shaft portions, held together by bolts 56. The main and end shaft portions have grooves 60, 59 respectively, which engage the corresponding bolt 56 and position the end shaft portions correctly. The arms 65, 66 are clamped to the end shaft portions 41 and each carry a bearing with a wrist pin 74 to connect with the tie bar 64. The tie bar 64 may be passed alternatively underneath the carrier 2 between the end shaft portions 42. The weight buckets 76 are welded to the main shaft portions 40 at 180 degrees with respect to the angular disposition of the end shaft portions 41, 42 relative to the respective main shaft portion and disc-shaped weights 89 are disposed inside the buckets near to the bearings 45, 46 and spaced apart by light spacing discs 90. The frame 1 also carries guards 19.
Patent GB-807419-A (GB)
Title: Process for the production of piston rings
IPC: B22F5/02
Filed: 1957-10-25
Abstract: 807,419. Powder metallurgy. KOEHUER M. Oct. 25, 1957 [Oct. 26, 1956], No. 33411/57. Class 82(1) [Also in Group XXVI] A piston ring is produced by pressing, sintering and further compressing a metal powder of uniform material composition, so as to have different values of density at different points of its circumference. As described, a pulverulent mix of Fe 93.5 per cent Pb 5 per cent and graphite 1.5 per cent was placed in a ring- shaped mould the lower part of which had depressions corresponding to the bulges ab, cb, de, and oompressed at 38 tons p.s.i. into a compact which was sintered at 1100‹C. for 1 hour. The compacted and sintered ring was cooled to normal temperature, annealed at a temperature oscillating about the AC1 point, and finally compressed under 90 tons p.s.i. in a mould of uniform depth to give the ring a uniform thickness and hence greater density (7.8) at de, ca than elsewhere (7.0). The ring was cut at b; whilst its composition finally was Fe 95.3 per. cent, Pb 3.6 per. cent., and carbon 1.1 per cent.
Patent GB-506895-A (GB)
Title: Process for the manufacture of artificial wool and artificial textile fibres with a high thermal capacity, and products obtained by said process
IPC: D01D5/00
Filed: 1938-11-17
Abstract: 506,895. Artificial wool. CARLIER, J. Nov. 17, 1938, No. 33463. Convention date, Dec. 11, 1937. [Class 2 (ii)] Artificial wool and artificial fibres of high thermal capacity are prepared by mixing together at least two of the following solutions, spinning the mixture into hydrochloric acid solution, and insolubilizing the threads obtained, for example in glycerine formaldehyde. The solutions are (a) a colloidal solution of a non- thermally reactive fusible phenol-formaldehyde resin in an aliphatic or aromatic alcohol, a ketone, ethyl, butyl or amyl acetate, or tricresyl phosphate ; (b) a colloidal solution of calcium or phospho-calcium alginate in water containing sodimn carbonate ; (c) a colloidal alkaline solution of wool or wool waste ; and (d) a colloidal alkaline solution of casein.
Patent GB-823379-A (GB)
Title: Improvements in or relating to waveguide hybrid devices
Inventor: BUNDAY DEREK CECIL
IPC: H01P5/20
Filed: 1955-11-22
Abstract: 823,379. Waveguide impedance-transforming networks. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 21, 1956 [Nov. 22, 1955], No. 33485/55. Class 40 (8). A waveguide hybrid device comprises an E-plane junction 9 and a coaxial arm 12 extending into the junction to provide coupling to a further waveguide 14 within the E-plane angle, the angle # of the junction being so chosen that the distance between the points of intersection 6, 9a respectively of the planes of the inner and outer broad walls of the waveguides 1, 2 is equal to one guide wavelength or a multiple thereof at the mid-band frequency. An input waveguide 10 of the same dimensions as the waveguides 1, 2 is connected to the apex of the junction and is provided with a capacitive matching screw 18. The waveguide 14 is terminated at one end in the vicinity of the probe 15 and is provided with a capacitive screw 17 at a point along the waveguide, determined by admittance measurements, where the normalized conductance is very nearly unity and the normalized susceptance inductive.
Patent GB-930488-A (GB)
Title: Improvements relating to liquid shock-absorbers on vehicles
IPC: F16F9/46
Filed: 1961-09-20
Abstract: 930,488. Shock-absorbers. DAIMLERBENZ A.G. Sept. 20, 1961 [Sept. 21, 1960], No. 33704/61. Class 108(3). A shock-absorber for a vehicle comprises a valve-controlled piston 16 which works in a liquid-filled cylinder 10 having a compensating chamber, not shown, and which has a hollow piston rod 11 with an open lower end 17 and parts 18, 19 of differing diameter which are controlled by a slide valve 20 and which, when uncovered, allow fairly free flow of damping liquid between the cylinder chambers 14, 15, the valve 20, slidable within the hollow piston 11, being controllable by means operable in accordance with the speed of the vehicle to which the shock-absorber is fitted so that the parts 18, 19 are progressively covered as the vehicle speed increases. The rod 22 of the valve 20, which is provided with a packing ring 27, extends beyond the upper end 23 of the piston rod 11 and is connected by a tongued-plug 26 to a spring-loaded plunger 27 arranged in a cylinder 28 carried by the piston rod 11. The cover 29 of the cylinder 28 has a connection 31 for admission of a pressure medium which is delivered at a variable pressure in dependence on the speed of the vehicle. In a modification the parts 18, 19 are replaced by a longitudinal slot.
Patent GB-1118007-A (GB)
Title: Ester of a perfluoroalkanoic acid and its polymers
Inventor: FIELDING BRIAN CROSBIE
IPC: C08F20/28
Filed: 1965-08-06
Abstract: Addition polymers are obtained by polymerizing novel esters of perfluoroalkanoic acids and hydroxyalkyl acrylates or methacrylates, the perfluoroalkyl chain containing 3 to 20 carbon atoms.  The polymers may be homopolymers or co-polymers of the esters with other polymerizable monomers, e.g. methyl methacrylate, and are useful, e.g. in the form of solutions in a solvent such as trichlorotrifluoroethane, for treating textile materials, glass, paper and other solid materials to impart water- and oilrepellant properties thereto.  The polymerization may be carried out in the presence of a free-radical-producing initiator, e.g. benzoyl peroxide or potassium persulphate, in emulsion systems or in bulk, or by applying the monomer to material to be treated and polymerizing it in situ.  In examples, the preparation is described of homopolymers of ethylene glycol monomethacrylate monoperfluoro-octanoate and ethylene glycol monomethacrylate monoperfluoro-isobutyrate.ALSO:Novel esters of perfluoroalkanoic acids and hydroxyalkyl acrylates and methacrylates, the perfluoroalkyl chain containing 3 to 20 carbon atoms, are prepared by reacting hydroxyalkyl acrylates or methacrylates with perfluoroalkanoic acids or their chlorides, anhydrides or lower alkyl esters.  The esters and their addition polymers (see Division C3) impart oil-and water-repellency properties to materials and surfaces to which they are applied (see Division B2 and D1).ALSO:Surfaces, e.g. glass, paper or textile materials, are coated with an oil- or water-repellant polymer derived from an ester of a perfluoroalkanoic acid and a hydroxyalkyl acrylate or methacrylate, the perfluoroalkyl chain containing 3 to 20 carbon atoms.  The polymer may be applied in the form of a solution, e.g. in 1, 1, 2, trichloro-1, 2, 2-trifluoroethane, or an aqueous emulsion or it may be formed in situ by polymerisation of the monomer.  The polymer may be a homopolymer or a co-polymer, e.g. with methyl methacrylate.ALSO:Textile materials, e.g. cotton or wool, are given oil- or water-repelling properties by treatment with an ester of a perfluoroalkanoic acid and a hydroxyalkyl acrylate or methacrylate, the perfluoroalkyl chain containing 3 to 20 carbon atoms, or a polymer thereof.  After application of the ester, it may be polymerised in situ or the polymer may be applied directly in the form of a solution, e.g. in 1, 1, 2-trichloro-1, 2, 2-trifluoroethane, or an aqueous emulsion.  The polymer may be a homopolymer or a co-polymer, e.g. with methyl methacrylate.
Patent GB-1484962-A (GB)
Title: Motor vehicle having a roof rail weather-strip
IPC: B60J10/00
Filed: 1975-08-14
Abstract: 1484962 Motor vehicle weather strip NISSAN MOTOR CO Ltd 14 Aug 1975 [14 Aug 1974 12 Dec 1974 7 March 1975] 33859/75 Heading E1J A motor vehicle body structure including a weatherstrip 22 affixed to a roof rail 14 makes an air-tight seal about the top edge 30 of an unsupported window pane 24; the strip is elongated, hollow and resiliently deformable and comprises a base 32, inner and outer side walls 34 and 36 with a web 38 connected to the base by a bridge portion 46. The strip may be held in a retaining clip 18 screwed to the roof rail 14. The inturned edge 50 of the clip may be extended to provide support for the side wall 36 and may also continue upwardly to form the guttering 16. The strip will maintain sealing contact with the top of the pane although this may move laterally due to changes in air pressure at high vehicle speeds.
Patent GB-970268-A (GB)
Title: Electrodeposition of nickel
IPC: C25D3/16
Filed: 1960-10-03
Abstract: An electroplating bath containing nickel salts is improved by adding chloral hydrate or bromal hydrate together with a glycol ether compound of formula: R1OCH2-A-CH2OR2, where R1 is H, <FORM:0970268/C6-C7/1> , -C2H4OH, <FORM:0970268/C6-C7/2> , and R2 is the same but not H, and A is -CH=CH- or -C­C-. Compounds formed by reacting an epichlorhydrin with a butyne diol are preferred.  Other optional additions are formalin, and fluoboric acid or salts thereof. Plating conditions specified are: pH 3-4.8, and temperature 50-65 DEG C.  A second bright nickel coating may be applied using a bath as above containing a glycol ether having a -C­C- group and allyl sulphonic acid, as described in Specification 970,269.  The coats may be of equal thickness and total 25m .  A final chromium coat may be added. Reference is made to regenerating the electrolyte by an active carbon filter.
Patent GB-1362687-A (GB)
Title: Car radio systems
IPC: B60R11/00
Filed: 1971-07-20
Abstract: 1362687 Radio receivers VOXSON SpA 20 July 1971 [29 Oct 1970] 33921/71 Heading H3Q [Also in Division H1] In a car radio system comprising a support frame 1 adapted to be mounted within a car and having a recess for receiving a radio set, on the rear wall of the support frame 1 there is provided connector means 8, 9 for connecting the radio set in its operative position within the support frame with an electric power source, loud-speaker and antenna, a locking bolt is provided within the support frame for automatically locking the radio set within the support frame and a key operated lock 5 is provided for unlocking the locking bolt to allow the removal of the radio set from its support frame. The metal support frame 1 has two fins 2 with holes for fixing to the dashboard of a car. The frame 1 cannot be removed from the car when a radio set is fitted since a front member 6, fixed by screws 7, covers the fixing fins 2. The radio is automatically locked in by a bolt which slides under an upper stiffening metal element 3 and the bolt can only be released by a cylinder lock 5 operated by a key 4. A connector 8 for the power supply and the speaker and a connection 9 for the antenna co-operate with corresponding members on the radio when it is inserted. A spring 10 makes earth contact between the radio and the support 1 and assists in ejection of the radio when key 4 is operated to unlock the bolt. The radios which can be received in the support 1 are of the keyboard type (12, Fig. 2, hot shown) which can have an electronic search for the stations and operating on VSW SW, MW and LW or (13) for MW and LW with two keys for waveband switching and manual tuning or (14) for MW with manual tuning and (15) a receiver which may also include a reproducer of stereophonic music from magnetic tape cartridges.
Patent GB-467170-A (GB)
Title: Coin-freed mechanism for vending electricity on a time basis
IPC: G07F15/12
Filed: 1935-12-07
Abstract: 467,170. Prepayment meter mechanism for electricity. STOTZ-KONTAKT GES. Dec. 7, 1935, No. 33929. Convention date, Oct. 26. [Class 27] Time-controlled apparatus.-In a coin-freed mechanism for vending electricity on a time basis, a synchronous motor M, Fig. 8, closes, after a predetermined time interval, a switch 23, 24 in an auxiliary circuit 25 in series with the release coil 8 of a current limiting switch 10 in the consumption circuit 41. This causes the coil 8 to be energized and attract its armature to open the switch 10, which is also manually controlled. The switch 10 cannot be closed again until a coin is inserted to open the contacts 23, 24 for another period of time. If, when the contacts 23, 24 are open, excess current is used in the circuit 41, the switch 10 is opened, the coil 8 and its armature acting in the usual way as a current limiting switch. The motor circuit 48 may be connected to one side 49 of the switch 10 so that the motor runs continuously whether the switch 10 is open or closed, or to the other side 51 so that the motor stops when the consumer opens the switch 10. The motor M rotates continuouslv a control disc 13, Fig. 3, on the shaft 14 of which are two cams 15, 16. During the prepaid period the contacts 23, 24 are kept open by an insulated pin 20 on a spring-pressed lever 18 engaging the spring arm 22 of the contact 23. At the end of the period, the cam 16 first raises the lever 18 until an extension 29 thereof engages and is held by a lug 30 on an arm 32 controlled by a spring 31. The cam 15 also raises a second spring-pressed lever 17 having a pin 19 bearing on the arm 21 of the contact 24. This allows the contact 24 to rise and maintain the contacts open, when the cam 16 has moved past the lever 18, until the cam 15 escapes the arm 17, whereupon the pin 19 moves the contact 24 into engagement with the contact 23. Coin action, weight.-A coin inserted in a shoot 34, Fig. 6, in its passage rocks a lever 37 against the action of a spring 38 so that an arm 40 carried by the lever closes the shoot and prevents another coin from passing. The coin, continuing down the shoot, engages a lug on the arm 32, which lug projects through an opening 35 into the shoot, and rocks the arm 32 to release the spring-pressed lever 18, thereby opening the contacts 23, 24 for a further period.
Patent GB-342015-A (GB)
Title: Improvements in or relating to spinning bowls for spinning artificial silk
IPC: D01D7/02
Filed: 1929-11-07
Abstract: 342,015. Centrifugal spinning-apparatus for artificial silk. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and GORVIN, G. W., Witton Moulded Insulation Works, Witton, Birming- ham. Nov. 7, 1929, No. 33954. [Class 120 (ii).] A spinning bowl for artificial silk is so arranged that its lid may be secured bv rotation in either direction from a position in which the lid may readily be withdrawn. The bowl and lid may be of phenol-formaldehyde synthetic resin with a suitable filler, the stem having a phosphor bronze bushing and flange. The lid is put on by bringing openings 11 therein to register with pins 6 on the body, rotation in either direction then causing these pins to ride up inclined surfaces 13 or 14. Holes 15 may be made in the lid to facilitate rotation.
Patent GB-364251-A (GB)
Title: Improvements in toy cannons
IPC: F41B7/00
Filed: 1930-11-13
Abstract: 364,251. Toy guns. BRITAIN, F. and BRITAINS, Ltd., 28, Lambton Road, Hornsey Rise, London. Nov. 13, 1930, No. 34218. [Class 132 (iii).] The breech of a toy gun is open at the rear for the reception of a projectile f and has a rearward projection c below the opening to form a seat for a cap, the cap and the rear end of the projectile being struck by a single spring-loaded striker d upon its release from cocked position by a trigger lever g. The gases generated by the explosion of the cap pass through a duct f<1> into the bore to assist the propulsion of the projectile. The-striker is pivoted on a pin d<1> and is actuated by a spring e upon its rotation past the dead-centre position by the depression of the trigger lever g. The barrel is adjustable for elevation and is held in position by a lever i pivoted thereto and engaging one of a series of notches h<2> in the carriage h.
Patent GB-507177-A (GB)
Title: Improvements in or relating to loft ladders and sliding stairways
IPC: E04F11/04
Filed: 1937-12-10
Abstract: 507,177. Loft - ladders. KNAPMAN, E. G. Dec. 10, 1937, No. 34282. [Class 20 (ii)] A loft-ladder is formed in hinged sections adapted to constitute a rigid ladder when extended and to take a curved path during raising and lowering, the means for raising comprising two spring-controlled cords attached to the foot and head of the ladder, respectively. The ladder 1 comprises a long lower section 2 and short hinged upper sections adapted to contact at their ends when extended and collapsed to form a rigid ladder. A cord from a spring-controlled drum 13 mounted on a cross-bar between rafters in the floor space of the loft, is attached to the head of the ladder, and a cord 21 from another spring-controlled drum 24 is led over a pulley to the bottom end of the ladder at 22. Another cord 27 is attached at 28 to the side of the ladder portion 2 at its upper end, and is led over pulleys 29, 30 to a helical spring 31 attached at its other end to the floor at 32, this spring being extended as the ladder is pulled downwards. Rollers 17 are provided at the head of the ladder to allow free movement, and fixed rollers 19 are provided at the opening to allow the ladder sections to bend freely during movement. Stops 26, 26a are provided to prevent the ladder from passing completely out of the storage space.
Patent GB-176482-A (GB)
Title: Improvements in and relating to tyres for farm tractors and like vehicles
IPC: B60B15/26
Filed: 1920-12-04
Abstract: 176,482. Brown, L., and Macintosh & Co., Ltd., C. Dec. 4, 1920. Temporary rims for adapting agricultural-machine and like wheels for use on roads. - A rubber tyre for use on a tractor &c. wheel having staggered spuds G is formed in curved sections A which, when assembled, form a sinuous tread as shown. Each section A has a vulcanite backing B' vulcanized to a metal base-plate B. The plates B are formed with lugs C, staples D or bolts being passed through meeting pairs of lugs to secure the tvre sections to the wheel rim F. The construction admits of removing or fitting the tyre sections A without interference with the spuds G, or vice versa.
Patent GB-752447-A (GB)
Title: Improvements in or relating to accumulator charging arrangements, suitable for portable radio equipment
IPC: H02M7/62
Filed: 1954-11-26
Abstract: 752,447. Battery charging systems depending on two or more sources. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Nov. 26, 1954 [Feb. 6, 1954], No. 34299/54. Drawings to Specification. Class 38 (4). - Apparatus for charging a battery of portable radio equipment from different mains supplies, comprises (a) the usual transformer and rectifier for feeding D.C. to the charging circuit from an A.C. source; (b) a vibratory or rotary inverter whereby A.C. may be obtained from a D.C source; and (c) a switching system enabling A.C. mains to be connected direct to the transformer, and a number of D.C. mains of different voltage to be connected to appropriate tappings on the transformer over the inverter. By this arrangement there is no direct connection between the charging circuit and the mains and, in the case of D.C. supplies, the polarity of connection of the mains to the apparatus is immaterial.