baber/WOPTO huggingface dataset:
Patent GB-343907-A (GB)
Title: Improvements in or relating to electrical circuit breakers
IPC: H01H33/14
Filed: 1929-10-25
Abstract: 343,907. Arc-rupturing in switches. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and CORNOCK, A. F., of General Electric Co., Wembley, Middlesex. Oct. 25, 1929, No. 32430. [Class 38 (v).] Switches, quickbreak.-A switch comprises a plurality of plates arranged in pairs in a pile and having insulation between the edges of the plates in each pair, so that in their undistorted position the plates are spaced apart to form a number of breaks in series, whereas, when the pile is compressed at or near the centres of the plates, the plates, or contact members carried thereon, are caused to contact with one another. In the form shown in Fig. 3, contact discs 5 are reduced at 6 to enter with a small clearance holes 7 in elastic steel plates 8, each pair of which is mounted in an ebonite ring 9. The normal gap between adjacent faces 11 is 1/50 inch, and the faces are finished on emery cloth and given a smear of oil. Circuit is made by compressing the pile of discs 5 until the adjacent faces 11 are in contact. In the modification shown in Fig. 5, elastic copper plates 40 are pressed to the shape shown and arranged in a pile with copper discs 42 and insulation 41 of, for instance, empire cloth. If used in an A.C. circuit about 130 volts per break is allowed, whereas in a D.C. circuit only 20 volts are allowed, and if the watts dealt with are large, there may be employed several serially-connected piles, each with its own compressing means. A separate shunt switch may be provided to take some or all of the current while the circuit remains closed, this shunt switch opening before and closing after the switch of the invention, so preventing overheating of the latter. In Fig. 1 piles 12, 13, each giving 50 breaks and guided by insulating rods 39, are adapted to be held compressed against the action of a spring 36 by means of an overset toggle formed by levers 30 pivoted at 31 to the rod 32 and at 29 to levers 27 which are pivoted to the frame also at 28. Extensions 26 on the levers 27 are engaged by a cross-piece 25 on the operating member'22 pivoted at 23, whereby the toggle 27, 30 is set. To release the switch, member 22 is rotated until a member thereon engages the links 27 to break the toggle. The rod 32 is connected through a paxolin tube 33 to a cross-bar 34 which is apertured to receive nuts 19 carrying rubber washers 35 and sleeves 18, the latter engaging the holes 7 of the lowermost plates 8. The holes in the uppermost plates receive contacts 14 which are connected to terminal-carrying rods 16 mounted on endplates 4 on the upper insulator 2. A strap 20 connects the piles in series and a nut 37 regulates the compression thereof. An insulating tube may surround the edges of the plates to prevent arcing thereat when the circuit is broken.
Patent GB-730416-A (GB)
Title: Improvements in and relating to contact clips for mounting on printed circuit panels
IPC: H01R33/76
Filed: 1952-12-23
Abstract: 730,416. Holders for thermionic valves. GENERAL ELECTRIC CO. Dec. 23, 1952 [Dec. 29, 1951], No. 32621/52. Class 38 (1). A socket contact for mounting on a printed circuit panel comprises a resilient prongreceiving portion formed of a pair of wings 10, Fig. 3, and resilient arms 11, 12 extending from the ends of the prong-receiving portion, their ends 11a, 12a being parallel and spaced apart and provided with lugs 11b, 12b which form aligned notches adapted to interlock with an aperture in the panel 1, Fig. 2. With a number of contacts thus held in apertures a jig 14 having pins 14c thereon is engaged in the prongreceiving portions of the contacts so as to align them with prong-receiving apertures 7 in the panel. The panel is then dipped in solder to connect the contacts to the printed circuit 2 and to other components, such as a resistor 13, the solder at the same time rigidly anchoring the contacts in position., In a modified contact, Fig. 6 a single, lower, out-turned lug 12b is provided on the arm 12 and arm 11 carries a tail 11c prong-guiding.tips 10a also being provided on the wings 10.
Patent GB-480465-A (GB)
Title: Improvements in or relating to means for projecting composite lantern slides with animated effects
IPC: G03B23/14
Filed: 1936-11-28
Abstract: 480,465. Kinematograph apparatus. ANIMATED SLIDES, Ltd. Nov. 28, 1936, No. 32655. Convention date, Dec. 17, 1935. [Class 97 (i)] Apparatus for producing motion effects in a projected picture, by the movement of a line screen over a lantern slide carrying a composite picture, comprises a governed motor for moving the screen carrier, a slide carrier which is normally stationary but is laterally movable, and a device whereby movement of the slide carrier, in the direction opposite to that in which the screen is moved by the motor, returns the screen carrier to its original position. As shown, the apparatus comprises a casing 1, with projection apertures 2, containing a screen carrier 3 and a double slide carrier 25. The screen carrier, when in use, is pulled by a spring barrel 8, round which a flexible connection 14 winds, and its movement is controlled by a governor or flier rotated, through gearing, by a rack 17 and pinion 16. The slide carrier is laterally movable, for slide changing, by a knob 47 on a rod 48, and slides on a guide 26, carried on a pivot 32 below the centre of the apertures 2, and rockable, against the action of a spring 34, by a screw 35, through a Bowden or like connection, to bring the lines of the slide and the screen into parallelism. In use, the slide carrier is in the position shown in Fig. 7 during the first part of the run of the screen carrier, and is in its alternative position during the later part of the run. While it is afterwards being moved into the position shown, a spring-pressed pawl 28 engages a' notch 42 in the screen carrier and they move together until a fixed detent 31 disengages the pawl and notch ; the movement rewinds the spring in the barrel 8. In a modification, the spring barrel and connection 14 are replaced by a spring motor operating through the pinion 16, and a slipping clutch in the motor drive permits movement of the carrier in the direction opposite to that in which it is motor driven, the spring being wound by a key when necessary. The line screen 6 is movable relative to its carrier 3, to free the apertures 2 when normal still slides are to be projected, the screen being provided with a knob 7. The knob 7 is engaged by a spring detent 41 on the carrier to hold it in working position, and is movable therefrom, in a direction away from the apertures 2, when the apertures are to be freed. Movement of the screen carrier by the motor, during still slide projection, is prevented by a brake engaging the governor. Springs 39, 40 are provided to urge the slides and screen towards each other.
Patent GB-337594-A (GB)
Title: Surgical appliance for gynecological operations
IPC: A61B17/42
Filed: 1929-10-29
Abstract: 337,594. Oster, K. Oct. 29, 1929. Obstetric appliances.-An appliance for use in gynecological and obstetric operations comprises a frame of multiple parts to be applied round the body of the patient and having attached thereto straps for supporting the patient's knees, feet and neck. The frame comprises a bridge piece 1 to which bars 2 are detachably connected by inserting their ends into loops 4, 5 the loop 5 snapping into a recessed part of the bar 2 against a spring 7. The bars 2 are pivoted at 11 to the bars 3 and carry at their free ends wing nuts 9 by which binding screws 8 may be clamped against sheet metal sectors 12 secured to the bars 3. Straps 14 having foot loops 15, and knee loops 13 are detachably connected to the bars 3 by curved members 17 secured to the loops 13 and passed through holes in the straps 14 and in the bars 3.
Patent GB-458052-A (GB)
Title: Improvements in or relating to the separation of the constituents in gaseous mixtures
IPC: B01D47/00
Filed: 1935-11-26
Abstract: In a process for separating constituents of gas mixtures by washing, particularly hydrocarbons with two or more carbon atoms per molecule from distillation or natural gases, the wash liquid having absorbed constituents of differing solubility is first expanded and the released less soluble gases are caused at a still lower pressure to drive out the more soluble gases.  The gas mixture compressed to 3--4 atmospheres is passed through coolers 2 .. 4 to reduce the temperature to 0 DEG  C. and a separator 5 in which benzene hydrocarbons <PICT:0458052/III/1> and water condense, to a preliminary washing column 6 supplied with about 2--4 per cent of the total amount of wash liquid, e.g. solvent naphtha, and cooled, e.g. by a coil 12.  The gas is then fed to a main washing column 7 supplied with degasefied liquid from a tower 8 in amount sufficient to remove the required proportion, e.g. half, of the hydrocarbons with two carbon atoms per molecule from the gas which is then returned to heat-exchangers 4, 2, and expanded in a machine 17, or utilized directly under pressure.  The wash liquid is expanded in a separator 9 to atmospheric pressure or slightly less and brought into contact with liberated gases in tower 8 at so low a pressure, e.g. below \ba1/10\be atmosphere, as to effect complete expulsion of hydrocarbons.  If the original gas mixture contains hydrogen sulphide, a slightly increased quantity of wash liquid effects its complete separation and its concentration in the gases evolved from the wash liquid is so great as to permit of its removal therefrom by inexpensive, e.g. carbonate washes.  A further treatment of the evolved gases for removing an excessive proportion of methane comprises compressing to 50 atmospheres, cooling to 0 DEG  C. and washing with the same wash liquid, methane being undissolved and the wash liquid being degasefied by expansion to e.g. 10 atmospheres and treated with evolved gases at 1 atmosphere.
Patent GB-173943-A (GB)
Title: Improvements appertaining to stentering and like machines used in the treating and finishing of fabrics
IPC: D06C3/04
Filed: 1920-11-22
Abstract: 173,943. Wrigley, J. H., Melville, A., and Henshilwood, A. B. Nov. 22, 1920. No Patent granted (Sealing fee not paid). Tentering.-Tentering-clips are detachably connected to ropes, the usual hinged points being dispensed with. As shown in Fig. 2, the clip is secured to a metal rope 3 by upper and lower spaced clamps 4, 4<a>. In this form, the teeth 5<a> of the driving-wheel are forked as shown. In a modification, the clip is secured to two ropes 7, 7<a>, Fig. 6, by clamps 8, 9, 10, a driving-wheel having single teeth 5<b> being employed. The clamps are shaped to the curvature of the driving-wheel. According to the Provisional Specification, cross-pieces secured to the rope are adapted to engage with the clips and with thedriving-wheels.
Patent GB-300551-A (GB)
IPC: D01F2/26
Filed: 1928-11-10
Abstract: 300,551. I. G. Farbenindustrie Akt.- Ges. Nov. 14, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Cellulose nitrate.-Nitrocelluloses of high homogeneity or solubility in alcohol are prepared by a two stage process. In the first stage, nitrocelluloses having a nitrogen content below 11.6 per cent are prepared by treating cellulose of any origin and even of low purity at a temperature below 30‹ C. with a mixture of nitric and sulphuric acids containing less than 18 per cent of water. In the second stage, these nitrocelluloses are subjected to the action of water under pressure at a temperature above 100‹ C. with the result that the solubility of the nitrocellulose in alcohol is increased from 15 per cent to about 100 per cent while the nitrogen content is diminished to about 10.5 per cent according to the time and temperature and consequently the pressure of the treatment with water. The nitrocelluloses prepared in this manner are suitable for the manufacture of varnishes, artificial leather, celluloid, &c. In an example, cellulose is nitrated for about one hour at a temperature of 20‹ C. in a nitrating acid containing 17 per cent of water 23 per cent of nitric acid and 60 per cent of sulphuric acid. The nitrated product is then washed in the usual manner and treated with water in an autoclave for one hour at 130‹ C. The nitrogen content is tiiereby reduced from about 11.5 per cent to about 11 per cent and the solubility in alcohol is increased from about 15-20 per cent to about 98 per cent.
Patent GB-1086975-A (GB)
Title: Monoazo dyestuffs
Inventor: WOLFRUM GERHARD
IPC: C09B29/033
Filed: 1966-07-22
Abstract: The invention comprises monoazo dyes of formula <FORM:1086975/C4-C5/1> wherein X is H, C1- 4 alkyl, phenyl, halophenyl or alkylphenyl and Y is H, C1- 4 alkyl, phenyl, halophenyl, alkylphenyl or nitro.  The dyes are made by conventional coupling procedures wherein a diazotized 2-amino-thiazole is coupled with 5-hydroxyacenaphthene.  The dyes are insoluble or barely soluble in water and are used to colour metal-containing polypropylene fibres in blue shades.
Patent GB-943702-A (GB)
Title: Improvements in or relating to apparatus for deriving from input electromagnetic waves electromagnetic waves having a frequency which is an integral multiple of that of the input waves
Inventor: ELDER KENNETH FREDERICK
IPC: H03B19/18
Filed: 1961-09-14
Abstract: 943,702. Frequency changing. GENERAL ELECTRIC CO. Ltd. Sept. 13, 1962 [Sept. 14, 1961], No. 33010/61. Heading H2F. A frequency multiplier arrangement for electromagnetic waves comprises a first section of waveguide 1 and a second section of waveguide 2 appropriate to the input and output frequencies respectively, these sections being soldered together or clamped about an insulating sheet, and a conductive coupling member 5 passing through the two sections and connected to a silicon variable capacitance diode 8. The coupling member 5 consists of three cylindrical colinear parts 5A, 5B, 5C, the parts 5B and 5A extending across the waveguides 2 and 1 and the part 5A protruding to engage the diode 8 which is in a housing 10 insulated from the waveguide by tape 11. The part 5C forms a coaxial stub line with a cylindrical member 12, stub tuning being effected by a member 12. Input waves pass through a band-pass filter comprising posts 18, 19 and screws 20, 21 and 22. The waveguide 1 is provided with a short circuit 23 adjustable by a screw 28, and the output waveguide 2 which feeds a load 24, includes a movable plunger 27 providing an adjustable short circuit, and screws 25, 26, for impedance matching. The diode 8 is supplied with reverse bias current from a source 29 through the circuit 1, 2, 12, 15, 5, 8 and 10. Main tuning is effected by the plungers 27 and 15 and fine tuning by the various screws.
Patent GB-498349-A (GB)
Title: A process for preparing alkyl chlorides
IPC: C07C17/08
Filed: 1937-12-01
Abstract: Alkyl chlorides are prepared by contacting hydrogen chloride with alkenes or alkene-containing mixtures in the liquid state, in which substantially anhydrous bismuth or antimony trichloride is kept suspended.  In examples: (1) hydrogen chloride is passed into hexadecene containing anhydrous bismuth chloride until it is no longer absorbed, the product diluted with pentane and purified as usual; (2) a fraction containing decene (obtained by cracking white paraffin wax in the vapour phase) is treated as in (1); (3) tetraisobutene (prepared from diisobutene by polymerization with sulphuric acid) is treated as in (1); (4) ethyl chloride is prepared by passing hydrogen chloride into liquid ethene, containing anhydrous bismuth chloride, in a closed vessel.
Patent GB-1381219-A (GB)
Title: Type internal combustion engines
IPC: F02B75/22
Filed: 1973-07-12
Abstract: 1381219 Radial cylinder engines CATERPILLAR TRACTOR CO 12 July 1973 [14 Aug 1972] 33315/73 Heading F1B [Also in Division F2] V-type I.C. engine has two banks of cylinders disposed at an included angle of 65 degrees, a crank-shaft having a plurality of longitudinally aligned main bearing journals and pairs of crankpins with the crank-pins of each such pair being overlapped and offset at an angle of 25 degrees with respect to each other, each pair of crankpins being positioned between an adjacent pair of main bearing journals and a rod and piston assembly mounted on each crank-pin. Fig. 5 shows one pair of crank-pins 17, 18 which overlap by an amount at least equal to one-third of the combined cross-sectional areas of the two pins, Fig. 7. The two fillets 38, 39 extend about 145 degrees around each pin and are formed to a radius by cutting or grinding to prevent stress concentrations.
Patent GB-500664-A (GB)
Title: Improvements relating to drilling or boring tools
IPC: E21B10/00
Filed: 1937-12-02
Abstract: 500,664. Drilling wells &c. STOW, G. R. S. Dec. 2, 1937, No. 33333. [Class 85] A tool for well &c. drilling comprises a fish-tail or other bit c acting only by rotation and removing the whole of the bottom of the hole, and a long, continuously-,rotating, open-top mud-tube a housing the hollow drill-pipe e and acting as a guide for the tool. The bit and mud-tube preferably rotate at the same speed. A tubular sawtoothed, diamond or shot bit d may house the bit c, and be welded thereto, and all the above parts may be threaded to a plug f with a flushing passage h.
Patent GB-172516-A (GB)
Title: An improved detachable tool handle
IPC: B25G3/32
Filed: 1920-11-29
Abstract: 172,516. Skelton, W. F. Nov. 29, 1920. Fixing by screwed sockets and extended axial tangs.-A detachable handle for holding files or other tools formed without tangs comprises a tubular member a provided with notches b on either side thereof and within which is carried a wedge-shaped hooked tang c screwed at the end to engage a cap f. The wedge portion is slightly wider at the end than the tube a.so that when the hook d is placed in a notch h in the tool and the cap rotated, the tool is drawn into the notches b and the hooked end d is forced into the notch h. In a modification the handle is provided with a notched ferrule and the screwed end of the tang is engaged by a bush carried by the cap. When applied to triangular or square files notches o, o, n, p, Fig. 8, are formed in the handle, the notch n being engaged by a triangular file and the notches o by the edges of a square file. A stop pin, or pins p, is employed in place of the notches b.
Patent GB-1046438-A (GB)
Title: Method of preparing organo-tin hydrides
IPC: C07F7/22
Filed: 1963-08-26
Abstract: Organotin hydrides are prepared by the reaction between a tin compound containing at least one tin-oxygen bond per molecule and a silicon compound contain at least one silicon-hydrogen bond per molecule.  The tin compound may contain the grouping ­SnOR1, where R1 is hydrogen, alkyl, aryl, cycloalkyl, aralkyl or acyl, or ­Sn-OMR113, where M is silicon or a tetravalent metal such as germanium or tin and R11 is alkyl, aryl or cycloalkyl. Bis(tri-n-butyl)tin oxide is reacted with trimethyl silane or methyl hydropolysiloxane to yield m-n-butyl tin hydride which is readily separated by distillation from the by-products containing Si-O bonds.
Patent GB-304882-A (GB)
Title: Improvements in electric incandescent lamps and holders thereof
IPC: H01K1/24
Filed: 1927-12-13
Abstract: 304,882. Grote, E. R. Dec. 13, 1927. Bulbs; caps; filaments ; holders. -To enable an uninterrupted line of light to be obtained from a series of tubular bulbs placed end to end, the caps 9 are located on the sides of the bulbs and the filaments 3 are carried to the ends of the bulbs. Wires 4 to support the filament are sealed into a glass rod 5 which is supported by wires 7 sealed at 10 into the wall of the bulb. The wires 7 also support the leading-in conductors 6. The bulbs are supported in troughs 12, Fig. 4, by recessed contacts 13 engaging the caps 9 and spring clips 18 engaging depressions 11 in the walls of the bulbs, linear expansion of the bulbs being provided for.
Patent GB-486860-A (GB)
Title: Improvements in automatic turret lathes
IPC: B23Q5/34
Filed: 1936-12-09
Abstract: 486,860. Turning. BROWN & WARD (TOOLS), Ltd., and KENDALL, F. W. Dec. 9, 1936, No. 33763. [Class 83 (iii)] In an automatic turret lathe of the type having an oscillating turret 1 carrying tools 9 and mounted on a reciprocating slide 3, the oscillation is effected by a pair of rack bars 6, 7 engaging opposite sides of a wheel 5 secured to the turret and operated alternately at the end of the turret slide withdrawal movement by means of a movable abutment 8. The latter is mounted on a sleeve 10 and carries pins 17 which are alternately positioned to coact with the particular rack bar to be operated by means of roller carrying arms 14, 15 integral with the sleeve and each coacting with one of two axially-spaced cams 12, 13 adjustably mounted on a rotary cam disc 11. The reversal of the rack bars is cushioned by means of shock absorbers 18 and the turret slide is further steadied by a piston and cylinder 26. The turret positions are determined by a spring- pressed locking bolt 19 which is raised by means of a pivoted arm 21 operated by a stationary cam surface through a rod 22. The turret is mounted on roller bearings at 23, 24. In a modification the wheel 5 is replaced by a slotted plate and the rack-bars by bars carrying rollers engaging the slots.
Patent GB-788997-A (GB)
Title: Waxes for the production of water-free polishes
IPC: C09G1/08
Filed: 1955-01-17
Abstract: A wax composition, suitable for the production of liquid, water-free polishes, comprises a blend of (1) a mixture of wax acids, paraffins and alkali metal and/or alkaline earth metal salts and esters of wax acids, the number of carbon atoms in the latter being within the range 23-40, e.g. 50 parts paraffins, 15 parts wax acids, 20 parts esters and 15 parts salts, and (2) polyethylene having a molecular weight below 10,000, alone or in admixture with hard paraffin wax having a melting-point above 70 DEG  C.  Component (1) may be made by treating C23-C40 aliphatic hydrocarbons by chlorination, dehydrochlorination of the chlorinated products, catalytic addition of carbon monoxide and hydrogen to yield aldehydes, hydrogenation to yield alcohols and alkali fusion to give carboxylic acid salts which are decomposed to give the acids, a portion of these then being neutralized to give the alkali and alkaline-earth metal salts.  A portion of the wax acids may be esterified with a monohydric alcohol, preferably one produced as an intermediate product in the above process, or with a dihydric alcohol, e.g. ethylene or butylene glycol.  The optional wax of the component (2) may be a microcrystalline paraffin wax, particularly that obtained by the catalytic hydrogenation of carbon monoxide containing hydrocarbons boiling above 400 DEG  C.  Polishing compositions are made by stirring the molten wax compositions with a solvent or solvent mixture, e.g. solvent naphtha or turpentine; slab paraffin wax, hard paraffin wax, ozokerite, or other waxes may also be incorporated.