baber/WOPTO huggingface dataset:
Patent GB-535194-A (GB)
Title: Improvements in and relating to methods of removing moisture or gases from solid objects
IPC: B01L7/00
Filed: 1940-02-22
Abstract: 535,194. Drying solid materials. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 22, 1940, No. 3337. Convention date, Feb. 24, 1939. [Class 34 (ii)] Moisture, trapped gas, and other vaporizable impurities are removed from bulky objects such as transformers and other electrical windings by subjecting them in a closed space to a current or vapour of a material having a boiling point well above that of water but below any temperature injurious to the object heated, and evacuating from the space the gases and vapours as they are extracted. In treating electrical apparatus trichlorbenzene or pentachlor diphenyl are suitable, or other chlorinated compound of diphenyl. Unchlorinated compounds such as diphenyl or diphenyl oxide may be used. Mineral oil or halogenated hydrocarbons are also suitable. As shown, a transformer 1 enclosed in a sealed tank 2 having a perforated partition 3 is subjected to the vapour from a heated liquid or solid 10 below the partition. This vapour condenses on the transformer 1 which is thereby heated, and the water and other volatizable impurities are gasified and and removed by a vacuum pump connected to pipe 6, the volatiles passing by a pipe 4 to a condenser 5 from which they flow into a tank 8. After treatment, any residue in the tank 1 is removed, and the apparatus finally may be impregnated with any desired liquid.
Patent GB-236844-A (GB)
Title: Buttonhole sewing machine
IPC: D05B3/06
Filed: 1925-02-06
Abstract: 236,844. Singer Manufacturing Co., (Assignees of Allen, E. B.). Oct. 9, 1924, [Convention date]. Button-hole sewing-machines. - A device is provided for moving the feedwheel suddenly through a part of its revolution while the stitching mechanism is still in operation, so that, according to the particular arrangement chosen, the stitches may be spaced widely apart, the button-hole may be turned through 90 between stitches to produce a straight button-hole with a bar or 180 to produce a straight button-hole without a bar. The machine is described as applied to a machine of the type described in Specification 183,873. The feeding of the work is controlled by a feed-wheel 16 and a synchronously moving pattern wheel 35, means being provided to transfer the control of the side-shifting movements of the work-clamp from the wheel 35 to the wheel 16 during the sewing of the eyeletend of the button-hole.. The wheels 16, 35 are driven by a star-wheel moved step-by-step by a shaft 17 geared to the sewing shaft and interposed in the driving connections are a ratchet and pawl device 43, 44 which allow the wheels 16, 35 to be driven temporarily at a. greater speed than they would by the star-wheel. Rapid feed mechanism of known type is provided. A crank disc 82 having a slot in which is fitted the head of a crank-pin 85 is driven by the sewing shaft 19, and continuously oscillates a pawl 88, the end of which rests on a toothed ring 90 mounted on the pattern wheel 35. In the arrangement described the ring 90 has a single tooth 91. As the pattern wheel rotates the pawl 88 reciprocates idly upon it until the tooth 91 is reached, when it gives the pattern wheel a sudden movement forward, this point coinciding with a point in the button-hole where it is desired to turn the stitching abruptly through a 90 or 180 to produoe a bar or to commence the stitching of the other side of the button-hole without stopping the machine. By employing a ring 90 with a number of teeth the spacing of the stitches around the eye of a button-hole may be increased. Specifications 179,278 and 197,463 are referred to.
Patent GB-975862-A (GB)
Title: Method and apparatus for producing acetylene
IPC: B01J12/00
Filed: 1963-01-28
Abstract: The effluent gas stream from a plasma arc reactor is cooled without dilution of the stream by indirect heat exchange and quenched by recirculating and positively directing a portion of the cooled gas into the hot effluent gas stream from the plasma arc reactor.  As shown in Fig. 1, feed gas materials, e.g. hydrogen and hydrocarbons having 1 to 4 carbon atoms, enter the reactor through pipes 20 and 22, the reactor being provided with cooling jacket 17. Effluent product gas at 900 DEG  to 1500 DEG  C. passes into indirect heat exchanger 50, provided with baffles 30, a portion of the recirculating gas stream impinging on fresh effluent product gas at 29 to provide immediate quenching thereof to 300 DEG  to 600 DEG  C. to prevent decomposition of the acetylene content.  Fig.3 shows a modification wherein the product effluent gas is cooled by admixture with cooled product gas recirculated through line 43 and nozzles 45 and then further cooled by at least one heat exchanger coil 32 fed with liquid or gas coolant, the latter optionally containing at least one component of the feed gas which then passes through outlet 35 to the reactor through line 20.  Product gases are taken off for purification through line 40. <PICT:0975862/C4-C5/1> <PICT:0975862/C4-C5/2>
Patent GB-228936-A (GB)
Title: Improvements in motor vehicles having change speed clutch gears
IPC: B60K23/02
Filed: 1925-02-07
Abstract: 228,936. Maybach Motorenbau Ges. Feb. 8, 1924, [Convention date]. Hydraulic transmission; setting and retaining devices for controlling-apparatus.-In a motor vehicle which is started from rest by means of a speed-changing clutch the ordinary clutchoperating lever acts on the clutch in one direction only and is further connected with auxiliary hydraulic mechanism which also acts on the clutch. The invention is shown applied to a two-speed gear in which the clutch member a<1>, a<2> engages the flywheel b for a direct drive and a stationary clutch or brake member c for the low-speed. The clutch pedal e operates an arm h adapted to bear against the clutch sleeve k which is pressed into the direct drive position shown by a spring w. The clutch sleeve can also be operated by a plunger q whenever the pressure in the chamber p of a gear pump driven by the engine rises in consequence of the closing of a valve n. The pedal e acts on this valve through a spring connection l. As shown, the direct drive is engaged and the engine may be at rest. To start the vehicle the, pedal is temporarily depressed against a stop e<1> thus moving the clutch to the free-engine position in which it is retained by a pawl s which engages a notch t in the rod r connected to the clutch arm. If the engine is now started and the pedal again depressed the gear pump is actuated and, the valve n being closed, the plunger q moves the clutch to the low gear position. On release of the pedal the valve n opens and the clutch spring w moves the clutch to the direct drive position shown, the rod r moving back sufficiently rapidly for the notch t to over-run the pawl s.
Patent GB-693168-A (GB)
Title: Improved methods of manufacturing or processing lightweight aggregates and improvements relating to sound and heat insulation
IPC: C04B32/00
Filed: 1950-02-13
Abstract: Lightweight aggregates are produced by coating vermiculite with silicate of soda or the like, together with finely divided powdered glass or commercial glazing compounds or like vitreous material and subjecting the coated mass to heat treatment to melt together and vesiculate the coating materials distributed over the surface of the vermiculite which is fully exfoliated. Before heating the aggregate may also be coated with precipitated chalk, powdered limestone or borax, or a shale, clay, or expandable rock such as pumice or perlite.  In a modification the pre-exfoliated vermiculite is substituted for the raw vermiculite.  Heating is preferably effected in a rotary kiln using a direct flame or by radiation from the heated furnace linings, the material being passed through by a vibratory system. The aggregates may be bound by means of cement or a silicate of soda flux and the voids may be filled with sand, crushed rock, or foamed slag or perlite, and may be pressed into blocks or slabs, which may be reinforced with steel.
Patent GB-754451-A (GB)
Title: Improvements in clasps for connection to the ends of articulated bracelets, such as wrist watch bracelets
IPC: A44C5/14
Filed: 1954-02-08
Abstract: 754,451. Watch bracelets. STARK, L., DAUB, K., DAUB, H., and DAUB, F., [trading as DAUB, A. (Firm of)]. Feb. 8, 1954 [March 12, 1953], No. 3584/54. Class 43. A clasp for attaching a wrist watch or other article to the end of an articulated band such as a watch bracelet comprises a box-like member 4 open at its bottom whereby it can be releasably fitted over and enclose the end member 1 of the band, the outer edge of the box-like member being formed with an elongated hook 12 in the form of a substantially tubular lug to engage a loop on one side of a watch casing. Fig. 5 shows the underside of the box-like member, one side of which is formed with tubular lugs 9 to receive a hinge pin 10 which engages a hinge lug 11 on the tubular hook 12, the opposite longitudinal edge 8 of the box being cut-away to form a recess 7 so that when the box is pressed down upon the end member 1 of the bracelet the ends of the recess abut against the ends of the connecting device 2, Fig. 1 (not shown), between the end link and the link adjacent to it. The box 4, which is a close frictional fit upon the end member 1, is retained in position thereon by a locking-device comprising a member 14 hinged upon the pin 11 by tubular lugs 13 and provided at each end with an offset arm 15 formed with a recess 17 in its outer edge so that when the member 14 is swung into the closed position the recesses 17 are engaged by detent projections 16 on the adjacent end walls 6 of the box member. The device is modified when required for an articulated bracelet wherein the longer sides of the box-like members 18, Fig. 14, are inclined at an angle to the longitudinal direction of the bracelet, the sides of the transition member 19 and the corresponding sides of the member hinged beneath it being made of such relative lengths that the tubular lug 12 lies perpendicular to the longitudinal direction of the bracelet.
Patent GB-437642-A (GB)
Title: Improvements relating to the processing or treatment of fabrics or textile fibres
IPC: D06M15/423
Filed: 1934-02-03
Abstract: Dyes and mechanically produced effects are fixed in fabrics by impregnating with a solution of an early intermediate product of an amidic component with formaldehyde, or with a solution of the amidic component or both components, and subsequently treating with steam in the presence of gaseous formaldehyde, preferably in the presence of an acid.  The fabric may be already dyed, or the dye may be incorporated with the impregnating solution. Mechanical effects such as embossing or scheinering may be carried out between the impregnation and the steaming.  Suitable amidic components are urea, thiourea, and their derivatives, and dicyanodiamide.  The steam and formaldehyde vapour is preferably obtained by boiling a solution of formaldehyde of at least 10 per cent strength.  In an example, a viscose fabric dyed with Diamine Rose FFB is impregnated with an aqueous solution containing 5 per cent salicylic acid and 15 per cent urea, dried, and treated for 20 minutes with the vapour evolved from a boiling 10 per cent formaldehyde solution; the colour is fast to washing and boiling soap.  In a further example, a cotton fabric is treated with an aqueous solution containing 10 per cent urea and 5 per cent of 80 per cent lactic acid, dried conditioned, embossed, and treated for 20 minutes in the vapour from a boiling 15 per cent formaldehyde solution.  Specification 425,032 is referred to.
Patent GB-734308-A (GB)
Title: Improvements relating to photographic shutters
Inventor: RUSSELL LIONEL VIVIAN FRANK
IPC: G03B9/08
Filed: 1953-02-10
Abstract: 734,308. Photographic pivoted blade shutters. AERONAUTICAL & GENERAL INSTRUMENTS, Ltd. Feb. 10, 1954 [Feb. 10, 1953], No. 3756/53. Class 98 (1). In a shutter having double-ended pivoted blades which move in the same direction to open and reclose the shutter and are driven by a rotatable blade-ring encircling the exposure aperture and pin-and-slot connected to each blade, successive exposures are made by rotating the ring in opposite directions by means of a pivoted link connecting it to an eccentric or crank which is driven through half a revolution from dead-centre to dead-centre for each exposure. As shown, five double-ended blades 6-10 are pivoted at 5 and have pins 11 engaging in radial slots 13 in a blade ring 14 which is driven in opposite directions to make alternate exposures through a substantially tangential link 23 connected to a crank 16 on a shaft 17 to which is secured one end of a spring carried in a coaxially mounted housing sleeve 21 having external gear teeth 20 engaged by a motordriven gear so as to tension the spring while the crank 16 is held stationary by engagement of a face 24 on it with an abutment face 28 on a slidably-mounted release member 26. The crank is freed to make an exposure by an eccentric 30 on the driven sleeve 21 engaging rollers 32A carried by the slide 26, the crank being arrested after half a revolution by the abutment face 29 on the slide. For slower exposures, a double eccentric 34 on the shaft 17 is engaged by the face 38 of a link 35 slidable on a pin 37 and connected to a pivoted toothed sector 41 engaged by a pallet 43, the extent of the engagement and hence retardation being determined by a manually adjustable speedsetting cam 48 against which a pin 47 on the link 35 bears. To avoid fouling at high speeds, the blades 6, 7, 9, 10 are cropped at 6a, 7a, 9a, 10a. For timed exposures of long duration, a member 49 on the shaft 17 and having two diametrically disposed stop-faces 50 is engaged when the shutter is fully open by a stop-face 53 on a clockwise-urged lever 51 pivoted at 52 and having a tail 54 engaging a pin 55 on a pivoted lever 56 carrying a roller 58 following the speed-setting cam 48, the shutter being closed when a double eccentric cam 60 on the shaft 17 engages a pin on the lever 51 to move the lever anticlockwise to free the shaft 17. The Provisional Specification refers to tensioning the shutter driving-spring by turning a knurled knob on the spring shaft and to obtaining different exposures by rotating this knob through different numbers of turns.
Patent GB-1077885-A (GB)
Title: Preparations for increasing contrast in the production of photographic images from silver halide layers
IPC: C08G65/333
Filed: 1965-01-28
Abstract: 1 - Dialkylamino - 2 - hydroxy - 3 - polyethyleneglycol propanes are prepared by reacting a 1-dialkylamino-2:3-epoxypropane with a polyethyleneglycol ether. Quaternary ammonium salts thereof may be prepared either by using the quaternized amino epoxide, or by quaternization of the product using an alkyl halide.  2 - Polyethyleneglycol - 1,3,5 - triazines, optionally substituted in the 4-position (e.g. by OH, Cl, alkoxy, aryl or polyethylene glycol groups), are prepared by reacting cyanuric chloride or a 2-chloro- or 2-methoxy-triazine with an alkali metal salt of a polyethylene glycol ether.  2 - Polyethylene glycol - 1,3,5 - borazoles which may be substituted in the 4,6-positions (e.g. by Cl or polyethyleneglycol) and in the 1,3,5-positions (e.g. by alkyl groups) are prepared by reacting an alkali-metal salt of polyethyleneglycol ether with 2-chloroborazole.  Polyethylene glycol starting materials may have molecular weights of 1000-50,000.
Patent GB-414728-A (GB)
Title: Improvements in and relating to tools for grinding or honing cylindrical bores
IPC: B24B33/08
Filed: 1933-02-08
Abstract: 414,728. Grinding cylindrical bores. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Hutto Engineering Co., Inc. ; 515, Lycaste Avenue, Detroit, Michigan, U.S.A.) Feb. 8, 1933, No. 3915. [Class 60.] A tool for grinding or honing cylindrical bores, for example the cylinders of internal-combustion engines, comprises abrasive members mounted on a rotatable support and means for adjusting the members radially to the size of the unground bore, an automatic non-reversible mechanism also being provided, whereby, as grinding proceeds, the members are expanded further until the bore has been ground to size. The tool comprises a hollow core A having a hollow enlarged end F adapted to be connected with a driving shaft G through a bayonet joint G', the pins J of which, together with a ring H and pins I, form a universal joint. The core has mounted therein a long gear member B meshing with rack bars C carrying on their outer ends holders D for abrasive members E, adjustable radially to the size of the unground bore by rotation of the gear by a member K secured thereto. In order to retain the gear against rotation after adjustment, the member K has a conical part thereon engaged by a corresponding surface in a member L, which has pins M movable in longitudinal slots M<1> in the end F and is locked to the member K by a nut P screwing on the member K; the nut and the member K have polygonal openings therein for engagement by the end R<1> of a wrench R. After preliminary adjustment of the members E, as described above, the tool is rotated and reciprocated in the bore, and the members E are moved outwardly by a spring Q acting on the member L, whereby the member is moved, with the gear B, axially to an extent limited by an adjustable collar O screwing on the end F, the teeth of the gear being formed at a slight angle, so that the axial movement gives a small outwards feed to the members E during grinding. The wrench R may have a screwed end R<4> carrying a bayonet slot part R<2>, whereby the members E may be contracted for treating another cylinder. In a modification, the rotation of the gear for initial setting of the members E is caused by a spiral torsion spring mounted in a sleeve extension of the member L. In a further modification, the teeth of the gear B are parallel to the axis of the gear, and the slots M<1> engaged by the pins M are slightly inclined to the axis, so as to give a slight rotation to the gear during grinding.
Patent GB-675096-A (GB)
Title: Improvements in or relating to wireless aerials
Inventor: POLLOCK ROBERT
IPC: H01Q1/46
Filed: 1949-02-14
Abstract: 675,096. Aerials. MASTERADIO, Ltd. Feb. 14, 1950 [Feb. 14, 1949], No. 3962/49. Class 40 (vii). A short-wave aerial comprises a length of the usual flexible lead connecting a receiver to the wiring system of a building, means for isolating the said length from the system at the radio frequency concerned by the introduction of a sudden change in the inductance or self-capacity in the lead, and means for transferring the voltage or current at the receiver end of the length to the first stage of the receiver. The length of lead chosen to constitute the aerial is arranged to be a quarter wavelength long or a multiple thereof. If the length is one quarter wave length or an odd multiple thereof there is a current maximum at the receiver end of the aerial and an " earth " must be provided. As there are two wires in the flexible supply lead the primary of the aerial coupling transformer 8 must be bifilar, the two wires being extended as at 9 to provide the operating power for the set. Condensers 10 between each wire and earth provide the earth connection. The sudden change in the mains lead isolating the aerial section may be provided by kinking the wire, close coiling it for a short length or by the use of a collar of highly permeable or high dielectric constant material fixed round it, or by a combination of these means. It is stated that by putting alternate collars of dielectric material and permeable material along a relatively short part of the mains lead a broad band effect is obtained and also that two or more fairly widely separated frequencies may be handled by the use of a similar number of suitably positioned discontinuities. Specification 598,165 is referred to.
Patent GB-963110-A (GB)
Title: Improvements in or relating to lock nuts
IPC: F16B39/30
Filed: 1962-02-02
Abstract: 963,110. Making lock nuts. H. J. SKIDMORE. Feb. 2, 1962 [Feb. 6, 1961], No. 3991/62. Addition to 875,416. Heading B3A. [Also in Division F2] A look nut (see Division F2), has a tapered extension 16 with impacted portions 22 which previously projected and the extension has a part-conical, convex or concave surface which, unlike that of the nut described in the parent Specification, extends directly to the side or sides 14 of the nut. The nut is of aluminium alloy or steel and may be square, hexagonal, round as a weld nut, slotted or ribbed. It may be machined from hexagon stock or produced by cold heading, using round bar stock, the nut body and tapered extension 16 being formed on a cut section, threaded in its bore and then impacted in the projecting portions with a tool having a tapered counterbore closing on the projections at an angle slightly greater than the angle the tapered surface makes with the vertical.
Patent GB-438240-A (GB)
Title: Improvements in folding stands for wringing and the like machines
IPC: D06F1/00
Filed: 1935-02-08
Abstract: 438,240. Trestles. HATHERLEY WORKS, Ltd., and ASHWELL, G. R., Melbourne Street, Gloucester. Feb. 8, 1935, No. 4066. [Class 52 (v)] [See also Group VIII] A folding wringer stand comprising two frames 10, 12 pivoted together at 11 is provided with a platform 13 pivoted at one end to the legs of one frame by means of a transverse bar 15 and intermediate its ends to a link 16 of which the other end 18 is pivoted to the legs of the other frame. To relieve strain on the link when the stand is extended as shown and the platform horizontal, the free end of the platform rests on a bar 19 extending between the legs of the frame 12.
Patent GB-665130-A (GB)
Title: Improvements in or relating to alkyl maleate-vinyl acetate copolymers
IPC: C08F222/14
Filed: 1949-02-16
Abstract: Alkyl maleates and vinyl esters, e.g. decyl maleate and vinyl acetate, are copolymerized at a temperature of 30-60 DEG  C. in an inert solvent, in the presence of 0.1 to 5 per cent of a peroxide catalyst and a reduction-oxidation activator combination comprising 0.01 to 0.5 per cent of a ferric salt of an oil-soluble fatty acid, e.g. ferric laurate, oleate, stearate or palmitate and 0.1 to 5 per cent of an oil-soluble substance containing hydroxy and/or carbonyl groups, e.g. benzoin, acetol, diacetone alcohol, diacetyl acetone and acetonyl acetone.  The catalysts may be benzoyl, p-chloro- and p-bromo-benzoyl, or acetyl peroxide, dibenzaldiperoxide, lauryl peroxide, cumene hydroperoxide and tertiary butyl perbenzoate and hydroperoxide.  Suitable inert solvents are chloroform, n-heptane, toluene, methyl ethyl ketone, diisobutyl ketone isopropyl ether, ethyl acetate, methylene chloride and pyridine.  The copolymers may be used as additives for lubricating oils.  Specification 655,068 is referred to.ALSO:A lubricating composition comprises a mineral base lubricating oil and a minor proportion of an alkyl maleatevinyl ester copolymer.  The addition of, e.g. decyl maleate-vinyl acetate copolymer to the oil improves the viscosity index and imparts excellent pour and shear stability.  Additional oiliness agents, antioxidants, metal deactivators, rust inhibitors, detergents, extreme pressure additives and tackiness agents may be included. Specification 655,068 is referred to.
Patent GB-230042-A (GB)
Title: Improvements in apparatus for separating water from oils and other liquids lighter than water
IPC: B01D17/02
Filed: 1925-02-16
Abstract: 230,042. Fisher, T. Feb. 28, 1924, [Convention date]. Separating by gravity. -Apparatus for separating oil or other lighter liquid from water comprises an outer vertical casing 1, an inner casing 2 and a central water outlet pipe 8 with an adjustable sleeve 9. In the outer compartment is a spiral deflector 4, extending vertically at the top. The mixed liquids are supplied through a pipe 5 having an air vent 16. Oil rises to the surface in the outer compartment, is heated by a steam coil 13 and discharged through a pipe 12. Water passes from the outer to the inner compartment through openings 6 at the bottom. The bottom of the apparatus is connected by a pipe 17 to a pressure water supply, so that an adequate water content can always be maintained.