baber/WOPTO huggingface dataset:
Patent GB-747281-A (GB)
Title: Improvements in or relating to the preparation of tetraalkyl-acetals of butenedial
Filed: 1954-01-25
Abstract: Tetra-alkyl acetals of butenedial are prepared by reacting furan with halogen and an aliphatic alcohol under substantially anhydrous conditions at a temperature below -25 DEG  C., introducing a basic agent into the mixture, at a temperature above -25 DEG  C. but not substantially exceeding 0 DEG  C., until the pH of the reaction mixture reaches between 6.0 and 7.5 and isolating the tetra-alkyl-acetal of butene dial from the resulting mixture.  The preferred basic agent is ammonia but others such as anhydrous sodium carbonate, alkali alcoholates, anhydrous alkali hydroxides and anhydrous amines such as methylamine, diethylamine, and pyridine may be used.  Suitable solvents which may be used for dissolving the reaction components are, for example, anhydrous aliphatic ethers, anhydrous petroleum ether and anhydrous halogeno-alkanes.  In the examples: (a) furan is reacted with methanol and bromine, using ether as a solvent for the reactants, at a temperature of -35 DEG  C., the temperature is allowed to rise and ammonia gas is passed in until a pH of 7 is reached; the tetramethylacetal of butenedial is separated from the resulting mixture; (b) the tetraethyl acetal of butenedial is prepared by the same method as in (a) except that ethyl alcohol is used instead of methyl alcohol; and (c) tetramethyl acetal of butenedial is prepared as in (a) except that chlorine is used instead of bromine.
Patent GB-617857-A (GB)
Title: Improvements in and relating to method of preserving fruit products
IPC: A23B7/04
Filed: 1944-10-17
Abstract: Fruits are preserved by flowing a refrigerated solution containing sugar at a temperature of 10-20 DEG  F. over the fruit to chill it to the freezing point, placing the fruit in containers with sugar or sugar syrup and storing at temperatures low enough to breeze the mass substantially solid.  Specification 617,776 is referred to.
Patent GB-158260-A (GB)
Title: Safety door-lock
IPC: E05B59/04
Filed: 1921-01-17
Abstract: 158,260. Zimmermann, V. May 18, 1914, [Convention date]. Lock with bolt operated by latch handle; lock with bolt formed by series of sliders.-A safety door lock has a latch 9, Fig. 1 (Cancelled), sliding on a pin P by means of a slot S, a bolt Q which is released for movement in both directions only on insertion of a key, and a handle follower H which withdraws the latch, and the bolt if shot, when turned in one direction, and shoots the bolt if turned in the opposite direction. The bolt is moved by means of an arm 6 pivoted to the casing at R and cooperating with a cam face on the follower H to shoot the bolt, the key being in position, and with a projection 10 on the back of the latch-nose to retract the bolt. The bolt consists of a series of equal plates Q, punched out of sheet metal lying flat upon each other, and having two series of equal slots 16, 17. Each plate has an edge 31 projecting into the slot 17 to a different amount for each plate, and also a projecting edge 32 below, the distance between the edges being equal for each plate. Two stops 14, 15 are fixed to the casing, the plates resting on the stop 15 and the stop 14 being situated in the slots 17, so that the plates Q cannot protrude from the casing to lock the door until they have each been lifted through the necessary amount to enable the edges 31, 32 to pass between the stops 14, 15. This is done by means of the flat non-rotating key 26, Fig. 3, which has an opening 18 with stepped edges. The key is inserted in the key-hole 23, 24, and the handle turned to move the lever 6. The first action of the lever is to push the plates Q a short distance to the left, the inclines 37 sliding upon the steps of the key and lifting the plates so that on further rotation of the handle and lever 6 the edges 31, 32 can pass between the stops 14, 15 and allow the plates to protrude from the casing. A notch 36 cut in the stop 15 and the, pointed ends of the lower projections 32 prevent the possible positioning of the plates by pressure without use of the key. To retract the bolt, the key must be inserted and the handle follower turned to pull back the latch 9 by the stud X. A projection 10 on the latch pushes back the lever 6, and the inclines 28 guide the edges 31, 32 between the stops 14, 15. The incline 25 works in conjunction with a pin 35 to depress the plates to their original position. If desired, a spring may be used to this end. To allow the plates to rise during their operation, the bolt-slot in the front plate is bevelled as at 12, 13. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also the modification shown in Fig. 4 (Cancelled), in which the lip 2 of a sliding bolt 37 engages with slotted plates 38, the plates working in the same manner as those constituting the bolt in the form described above. This subject-matter does not appear in the Specification as accepted.
Patent GB-183157-A (GB)
Title: Improvements in and relating to prepayment mechanism
IPC: G07F15/08
Filed: 1921-01-18
Abstract: 183,157. Anderson, J. Jan. 18, 1921. Gas, supplying by meter.- In epicyclic prepayment mechanism for gas meters, in order to provide a compact mechanism, the measuring- out crown wheel 34 and a pinion 30 driven from the meter by a worm 31 form an enclosed cage containing the sun-wheel 32 and planetwheel 33, which is in gear with the crown-wheel. The wheel 32 is secured to, a sleeve f passing loosely through the pinion 30 and carrying a ratchet-wheel n which is rotated by prepayment to set the crown wheel forward, a pin 36 thereon engaging a forked lever to open the valve. The crown wheel is returned, as gas is consumed, by rotation of the pinion 30, the wheel 32 being stationary. The axes of the measuring- out mechanism, the price-charging mechanism and the ratchet-wheel n are in line, the pricecharging mechanism being described in Specification 183,156. The price-changing mechanism described in Specification 170,603, may be used. Indicators; coin-slit closing-devices. - The crown wheel 34 carries a graduated disc 35 past a fixed pointer 47 to show the amount of gas prepaid but unconsumed, and a cam 37 for actuating a coin-slit closing-device. Instead of a flat disc, the graduated dial may be a, dished plate partly enclosing the epicyclic gearing.
Patent GB-865331-A (GB)
Title: Co-ordinating resins
Inventor: FIELDING HAROLD CROSBIE
IPC: C08F8/00
Filed: 1959-01-23
Abstract: Co-ordinating resins suitable for extracting cations from solutions comprise organic polymers into the molecules of which <FORM:0865331/IV (a)/1> groups, where R represents an alkyl radical, have been introduced and which have a phosphorous content of 5 to 25% by weight.  They may be prepared by reacting polymers, e.g. chlorinated polyethylene, polystyrene, chloromethylated polystyrene and polyvinyl alcohol, with a dialkyl chlorophosphine in the presence of a condensing agent, e.g. aluminium chloride, antimony trichloride, sodium, pyridine or triethylamine, and subsequently hydrolysing and oxidizing the product, e.g. with water or dilute hydrochloric acid followed by hydrogen peroxide or nitric acid. In examples (1) polyvinyl alcohol, (2) chloromethylated polystyrene and (3) chlorinated polyethylene are reacted with diethylchlorophosphine.ALSO:Co-ordinating compounds suitable for extracting cations from solutions comprise high molecular weight, aliphatic, waterinsoluble compounds the molecules of which contain 20 or more carbon atoms into the molecules of which <FORM:0865331/IV (b)/1> groups, where R represents an alkyl radical, have been introduced and which have a phosphorus content of 5 to 25% by weight. They may be prepared by reacting the compounds, e.g. chlorinated paraffin wax, with dialkyl chlorophosphines, e.g. diethyl chlorophosphine, in the presence of condensing agents and catalysts, e.g. aluminium chloride, sodium, pyridine, triethylamine and antimony trichloride, and subsequently hydrolysing, e.g. with water or dilute hydrochloric acid, and oxidising the product e.g. with hydrogen peroxide or nitric acid.
Patent GB-924823-A (GB)
Title: Improvements in or relating to roller bearings
IPC: F16C29/06
Filed: 1962-01-24
Abstract: 924,823. Rectilinear-motion bearings. TORRINGTON CO. Jan. 24, 1962 [Jan. 27, 1961], No. 2574/62. Class 12 (1). A recirculatory bearing for interposition between reciprocatable parts comprises a flat base 11 with straight parallel side flanges 12, 13 having two straight parallel-spaced race members 17 with curved and abutting ends 18, 19 mounted thereon and with a cap 26 fitted over the race members 17 fastened thereto having roller return guides 28 integral with it and providing spaced passageways around the ends of the members 17, and a continuous series of rollers 24 movably carried adjacent the members 17. The cap 26 is keyed to the base 11 which has a raised crown 16 and inside the race members 17 tongues 34 from the cap 26 are attached to the base 11 by tangs. The members 17 have tongues 33 mating with the cap 26 and tongues 22 mating with the base 11 to which are secured the return guides 28 having wings 29. The rollers 24 have reduced end portions 25 against which bear flanges 27 depending from the cap 26 to contain them.
Patent GB-100093-A (GB)
Title: Electric Furnace.
Inventor: WRIGHTON WILLIAM JOHN
IPC: F27D11/02
Filed: 1916-02-21
Abstract: 100,093. Wrighton, W. J. Feb. 19, 1915, [Convention date]. Resistance furnaces.-A heater for producing a temperature of about 1800‹ F. comprises a conductor embedded in a refractory non-vitreous material of good heat conductivity and having the same coefficient of thermal expansion. A nickelchromium wire 1, Fig. 7, may, for instance, be embedded in a mixture of alundum powder and a ceramic binding material such as fireclay, on the inner surface of a hollow cylinder 4, consisting of a heat-insulating material also having the same coefficient of expansion, for instance a mixture of asbestos and clay. External flanges may be formed at the ends of the tube. To allow of heat regulation in use, the wire may be in two sections, one consisting of a single coil and the other of two similar coils in parallel. A common connexion to both sections passes through an insulating-bushing in the lower flange of the cylinder. Separate connexions for the upper ends of the sections are insulated outside the cylinder by short pieces of tube, and also pass through the lower flange, being shielded from the coils by embedded mica or the like. In the furnace shown, the heating-cylinder stands on a fire-brick 36 resting on asbestos air-cell boards 35, and is surrounded by magnesium carbonate or the like 37, within a metal casing 33. This casing is supported by angle-bars 32 on an asbestos board 31, held bv angle-bars on uprights 26, to which is secured another asbestos board 27 carrying the three terminals for the heater sections. An outer sheetmetal casing 29 is separated from the inner one by heat-insulating material. On the upper end of the heating-cylinder are placed two fire-bricks 45. grooved so as to form an observation hole. The object to be heated may rest on an alundum tube 41 notched to allow entrance of conductors for a thermo-couple T, which may be in contact with the object. These conductors pass upwards to a measuring-instrument 55, which may be mounted on an asbestos switchboard. Heating is controlled by three switches. Two of the switches 64, 68 put the two heater sections directly in circuit, while the third switch 73 is provided with two contacts 74, 75, so that it can place either section in circuit in series with a regulating-resistance R. A lamp L in a shunt circuit indicates when a main switch 58 is closed. An ammeter 62 is provided. The switchboard is mounted on a table 52, the legs of which rest on brackets 48 at the sides of the furnace.
Patent GB-1080841-A (GB)
Title: Improvements in or relating to apparatus for the determination of carbon dioxide in the atmosphere
Inventor: TEALE RICHARD
IPC: G01N7/04
Filed: 1963-01-22
Abstract: 1,080,841. Gas analysis manometers. INTERNATIONAL GAS DETECTORS Ltd. April 22, 1964 [Jan.22, 1963], No. 2632/63. Headings G1B and G1L. Apparatus for the determination of carbon dioxide in the atmosphere comprises a pair of porous vessels and a manometer, the interior of one vessel being connected to one side of the manometer and the interior of the other vessel to the other side of the manometer, each vessel being provided with a cavity in its base to receive a moisture containing unit 5, each vessel also containing a carton 13, which in one vessel is of a carbon dioxide absorbent, e.g. soda-lime, and in the other is of cotton wool or other absorbent material whose hygroscopic properties have been increased by the deposition of or by impregnation with calcium chloride. The apparatus is intended to allow for humidity of the atmosphere when carrying out a carbon dioxide content determination. Each vessel comprises porous ceramic rings 1 and non-porous rings 2 clamped between top and bottom plates 3, 4. The moisture containing units 5 each comprise a reticulated container of moistened cotton wool, and these are mounted on resilient pads 21. The cartons 13 are carried in frames 11, which may if desired also carry the units 5, and the vessels are closed by caps 6. A pipe 18 connects the vessel containing the soda-lime with a chamber 14 Fig. 1 and a pipe 19 connects the other vessel with a chamber 15. The manometer comprises the chambers 14, 15 connected by a tube 16, a vertical portion of which is arranged adjacent a scale 17. A screw threaded member 20 is provided for bringing the liquid level in the tube 16 to zero on the scale 17. Small bore extensions of the tubes 18, 19 extend into the chambers 14, 15 to render the manometer non- spillable.
Patent GB-581578-A (GB)
Title: Improvements in binocular observation instruments
IPC: G02B23/18
Filed: 1944-02-12
Abstract: 581,578. Binoculars. BARR & STROUD, Ltd., and FRENCH, SIR J. W. Feb. 12, 1944, No. 2650. [Class 97 (i)] In a binocular observation instrument of the hinging interocular adjustment type, provision is made for alignment of the optical axis of the limbs into parallelism with the hinge axis, such provision comprising a small clearance or space in the transverse direction in the parts connecting the limbs to permit the desired adjustment of the optical axis, with means for securing the parts in the adjusted positions. As shown in Fig. 1, the axis 2 of one limb 8 may be aligned with a hinge 6 by having a ring 9 between the -limb 8 and a hinge arm 7, the ring being filled with a low melting point material such as Wood's metal. In a modification, Fig. 2, not shown; the limb and the hinge arm may be threaded to retain the cement. The hinge arm may, instead of encircling the limb, end in a disc having corrugations 17, Fig. 4, which co-operates with a boss 15 having like corrugations 16 and a screwed cap 18, the space being filled with a low melting point material through a hole which is afterwards sealed. The adjusting space may be left at the hinge end of the arm 7 as in Fig. 3, not shown, and may be made at either the eyepiece end or the objective end. The filling may be plastic, fish glue, resin or silicious cement and may be suitable to withstand tropical heat conditions.
Patent GB-538797-A (GB)
Title: Improvements in and relating to manifolding attachments for typewriting machines
IPC: B41J17/00
Filed: 1940-02-12
Abstract: 538,797. Typewriters. LAMSON PARAGON SUPPLY CO., Ltd., and GARWOOD, V. W. Feb. 12, 1940, No. 2663. [Class 100 (iv)] Carbon-sheet arrangements. In arrangements comprising a carbon-sheet holder running on a frame which as connected to the platen-carriage and can be tilted to cause return of the holder, tilting of the frame causes means such as a cord to effect a direct pull on the holder and accelerate return thereof. In the apparatus shown in Figs. 1 and 3, a carbon-sheet. holder or trolley 13 runs on a frame 9 pivoted at 7a to a carrier 7 which, as, described in Specification 538,796, runs on rails 4 on a tray 6 for the typewriter. The frame. 9 is connected by links 9a to arms 10 on a spring-urged spindle 11 provided with handles 12. The trolley is connected by a cord 16, passing over pulleys. 18, 19, 21, 22, 23, to a spring-urged lever 24 on the carrier 7, the pulleys- 18, 19 and the upper pulleys 21, 22, 23 being mounted on the frame 9, and the lower pulleys 21, 22, 23 being mounted on the, lever. During typings of a set of forms; the trolley moves, forwards, and the lever falls to take up slack in the cord. When the forms have been typed, one of the handles 12 is pulled forwards to raise the frame 9, a direct pull is imparted to the cord by the lever 24, and the trolley is, quickly retracted with the aid of gravity. A cord loaded by a weight or spring may replace the pulley-and-leyer arrangement. To facilitate assembly of the carbon sheets and the webs, a slide 32, mounted in guides 33 in the frame 9, is pulled forwards, and the webs are gripped in a clip 31 on the slide. When the frame 9 is in tilted position, the rolley 13 is detained by co-operation of a lug 28 thereon., with a stop-lever 29 which is pivoted on the frame and swings: out of the path of the lug when the frame. returns to normal position. Specification 538,821 also is referred to.
Patent GB-431035-A (GB)
Title: Method of fastening artificial teeth to dental plates
IPC: A61C13/10
Filed: 1935-01-26
Abstract: Artificial teeth are secured to dental plates by welding without the employment of fastening-pins.  Preferably, glass is used for the manufacture of the plate, and is cast under pressure, the enamel coating of the teeth uniting with the glass during casting.
Patent GB-484617-A (GB)
Title: Improvements in or relating to automatic sluices
IPC: E02B7/20
Filed: 1937-01-29
Abstract: 484,617. Sluice valves. ATELIERS NEYRET-BEYLIER & PICCARD-PICTET. Jan. 29, 1937, No. 2734. Convention date, Sept. 17, 1936. Addition to 472,271. [Class 68 (ii)] In an automatic sluice as described in the parent Specification having an obturator 1, Fig. 1, in the form of a cylindrical sector connected through a platform 2 to an axis of rotation O at the centre of the cylinder, a chamber 20 open to the atmosphere is provided on the platform 2 and is supplied with liquid at up-stream pressure through an orifice 25 in the platform 2, the turning force produced by the up-stream pressure on the underside of the platform being balanced by that due to the weight of the sluice and of the liquid in chamber 20. The chamber 20 has a weir 24 at the side adjacent to the axis O so that the liquid in this chamber is maintained at constant level. The platform 2 is curved to compensate for the effect of the velocity of the stream. Walls 21 and 22, Fig. 2, form lateral cheeks and obviate the necessity of locating the sluice between fixed walls. Lateral openings may be provided as indicated in broken lines at 27 and a discharge orifice 26 may be provided. In an alternative arrangement the obturator 1, Fig. 3, is disposed on the upstream side of the axis of rotation O, a large chamber 27 being located adjacent the obturator 1 and supplied with liquid at upstream pressure through orifice 31, the chamber 27 being connected through pipes 30 to a smaller chamber 28 located adjacent the axis O and provided with a weir 32 which maintains a constant liquid level in the chambers 27, 28. The bottom 2 of the chamber 27 is subjected to upstream pressure which produces a turning force balanced by that due to the weight of the sluice and of the liquid in the chambers 27, 28. The capacity of chamber 27 may be varied by the introduction of a member 33 and a counter-weight 34 may be used partially to compensate for the weight of the sluice.
Patent GB-803844-A (GB)
Title: Improvements in or relating to the electrolytic production of iron powder
IPC: C25C5/02
Filed: 1957-01-25
Abstract: 803,844. Producing iron powder electrolytically. SOC. D'ELECTRO-CHIMIE, D'ELECTRO-METALLURGIE ET DES ACIERIES ELECTRIQUES D'UGINE. Jan. 25, 1957 [Feb. 8, 1956], No. 2857/57. Class 41. A process for producing iron powder comprises electrolysing an oxygen-free dilute aqueous solution of a ferrous salt, e.g. the chloride or sulphate, in the absence of oxygen under such conditions that pulverulent detachable iron is formed on the cathode, periodically detaching the iron powder which is deposited on the cathode, and removing the powder from the electrolyte out of contact with oxygen. Oxygen is eliminated from the apparatus in which the process is carried out by employing a closed apparatus from which the air has been expelled and replaced by an oxygen-free gas, or by employing an open apparatus with an airimpermeable liquid layer, e.g. petrol, on the electrolyte. An inert gas, e.g. argon or helium, may be bubbled through the electrolyte. The concentration of the ferrous salt is 0.05 to 0.5 mol. per litre and a small amount of ferric salt, not more than 1: 100 of the amount of ferrous salt, may be included in the electrolyte. The pH is between 3 and 5, the cathode current density between 0.5 and 5 amps. per sq. cm. and the electrolyte at room temperature or below, e.g. 15 ‹ C. to 25‹ C. An iron or graphite cathode may be employed, or one of a metal electronegative with respect to iron, e.g. copper, and the anode, which may be coaxial with and may surround the cathode, may be graphite or platinum, a diaphragm separating the electrodes, or a soluble iron anode may be employed and no diaphragm. The cathode, which may be movable, may be subjected periodically, e.g. every 1 to 2.5 seconds, to shocks by mechanical or electromagnetic means, or to intermittent brushing or scratching to remove the powder deposit. In one example, a copper wire cathode 1.1 mm. in diameter was connected to the moving part of an electromagnet which drew the wire periodically into a close-fitting glass sheath. The detached powder may remain in suspension or sink to the floor of the apparatus, where it may be retained by a magnetic field, for subsequent filtering or decanting and washing in water and acetone. Anode current densities of 0.005 to 0.04 amp. per sq. cm. are mentioned.
Patent GB-414119-A (GB)
Title: Improvements in or relating to submarine electric cables
IPC: H01B7/14
Filed: 1933-01-30
Abstract: 414,119. Cables; conduits. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Burton, E. T. ; 97, Cypress Street, Millburn, New Jersey, U.S.A.) Jan. 30, 1933, No. 2899. Convention date, Feb. 27, 1932. Drawings to Specification. [Class 36.] The shore end of a submarine cable is provided with a covering of cushioning material to prevent noises arising from impacts of stones &c. The covering may consist of a layer of jute half an inch thick. A conduit enclosing the shore end as described in Specification 339,262, [Class 36], may be protected in a similar way.
Patent GB-1027033-A (GB)
Title: Gaseous fuel burner for producing radiant heat
Inventor: ZINK JOHN SMITH
IPC: F23D14/12
Filed: 1963-01-23
Abstract: 1,027,033. Radiant heat burners. JOHN ZINK CO. Jan. 23, 1963, No. 2908/63. Addition to 928,430. Heading F4T. A gas burner comprises a bulged annular wall 23 having a plurality of elongated gas discharge slots 26 and an end wall 17a having a conical face directed upstream of the burner and disposed at 40 degrees to the axis of the burner to reflect the entering gas radially outwards through the slots 26. The inner surface 42 of the side wall merges smoothly with the bulged portion near the upstream ends of the slots 26. The burner is welded to a gas supply conduit having lugs 24 for centring the burner in an opening 14 in a ceramic member 11.