baber/WOPTO huggingface dataset:
Patent GB-823067-A (GB)
Title: Chuck for drilling tools
Inventor: BAERWINKEL PAUL
IPC: B23B31/12
Filed: 1956-05-08
Abstract: 823,067. Chucks. WARSITZ, E., [trading as MASCHINENFABRIK HILDEN E. WARSITZ]. May 8, 1956, No. 14318/56. Class 83 (3). A drill or like chuck adapted to grip tools with cylindrical - shanks is arranged to quick-release and change-of-tool while rotating. The chuck-body 1 is adapted to be attached to the machine-spindle and is threaded over a portion of the exterior at 25. A guide 4 is rotatably connected with the body by balls 5 engaging recesses in the body and the guide. The latter serves, by its outside surface, to support a chuck-sleeve 22 which has a tapered - nose 18 secured at the lower end, and is slotted at its upper end. Wedge-members 26 operated by a ring 28 sliding over the sleeve 22, fit into the slots and give radial movement to wedge members 24. The latter are threaded on their inside surfaces to correspond with the threads 25 on the chuck-body. A bore in the guide 4 supports a member 6 which carries an upper set of gripping-dogs 8 and, sliding in T-slots in the under-surface of these, a second set of tapered gripping dogs 7. The upper dogs, closed by a tapered ring loosely mounted within the guide 4, grips the tang-end of a drill while the lower-dogs engage the shank. Operation.-With the ring 28 moved to open the threaded members 24 to free the sleeve 22 from the body 1, the drill 13 is pushed in by hand until the tang-end engages the dogs 8. The sleeve 28 is then pivoted upwards to move the wedge parts 26 and thus close the threaded members 24 on to the body treads. When engagement commences the clamping-parts rotate, and as drilling takes place a selftightening action obtains.
Patent GB-1097361-A (GB)
Title: Water-soluble, metal-containing azo dyestuffs and process for their manufacture
IPC: C09B62/495
Filed: 1965-04-05
Abstract: Water-soluble 1:1 and 1:2 copper, chromium, cobalt and nickel mono- or disazo complex dyes of formula <FORM:1097361/C4-C5/1> in which D is a radical of a diazo component and K is a radical of a coupling component and in which D and/or K may contain one or more groups imparting solubility in water, e.g. sulphonic and carboxylic acid groups, and a further azo group, R1 and R2 each represents a hydrogen or chlorine atom or an alkyl group, X is a hydrogen or halogen atom, e.g. fluorine or chlorine, B is a -NHCO-, -NHCOCH = CH- or -Nalkyl-CO-CH=CH- group, n is 1 or 2 and k is 0 or 1 are prepared by reacting 1:1 or 1:2 copper, cobalt, chromium or nickel complex of a mono or disazo dye of formula <FORM:1097361/C4-C5/2> in which D, K, n and k are as above and R1 is hydrogen, or an alkyl group with 1 or 2 moles of a compound of formula <FORM:1097361/C4-C5/3> in which R1, R2 and X are as above, A is a group -CO-halogen, or -CH = CHCO-halogen at a temperature of 10-80 DEG  C. in aqueous, aqueous-organic or organic media at a pH of 6.5 -10 in presence of an acid binding agent. Solvents specified are 1,4-dioxane, acetone and ethylene glycol dimethyl ether and their aqueous mixtures.  Blue, brown and grey shades are obtained on cellulose, wool and silk substrates.
Patent GB-802072-A (GB)
Title: Process for the preparation of ªŠ-caprolactam from adipic diamide
IPC: C07D201/08
Filed: 1957-05-06
Abstract: A composite catalyst having a hydrogenating and dehydrating action, used for the preparation of e -caprolactam from adipic diamide (see Group IV (b)), comprises compounds containing one or more hydrogenating components on a support acting as a dehydrating agent, e.g. iron, nickel, or cobalt on aluminium oxide, silicon oxide, boric acid or phosphoric acid.  In examples, the catalyst is (1) a mixture of Co : Ni : SiO2 in the ratio 60 : 5 : 35, and (2) a mixture of Co : Ni : Ao2O3 in the ratio of 70 : 2 : 28.ALSO:e -Caprolactam is prepared from adipic diamide in the presence of ammonia, hydrogen and a composite catalyst having a hydrogenating and dehydrating action, by reacting the components in a solvent at elevated temperatures up to 200 DEG  C. and elevated pressures up to 200 atmospheres. Preferred conditions are a pressure of 30-170 atmospheres, and a temperature of 150-190 DEG  C.; the minimum pressure should be higher than the vapour pressure of the solvent at the temperature of operation. Preferred solvents are ethers having a boilingpoint above 50 DEG  C. at normal pressure; examples are the higher aliphatic ethers such as dipropyl or dibutyl ether; or cycloaliphatic ethers such as dioxane or tetrahydrofuran.  Mixtures of the ethers may be used, or mixtures of the ethers with saturated hydrocarbons.  The catalyst is preferably a mixed compound containing one or more hydrogenating components on a support acting as a dehydrating agent, e.g. iron, nickel or cobalt on aluminium oxide, silicon oxide, boric acid or phosphoric acid (see Group III).  Instead of adipic diamide, adipic acid or its diamide-forming derivatives, such as esters, may be used, the ammonia concentration being increased so that the diamide may be formed during the reaction. Solvents are removed by fractional distillation.  The process may be carried out batchwise or continuously.
Patent GB-642850-A (GB)
Title: Improvements in or relating to accelerometers
Inventor: POSTLETHWAITE FRANK
IPC: G01P15/04
Filed: 1948-05-28
Abstract: 642,850. Accelerometers. MINISTER OF SUPPLY. May 28, 1948, No. 14469. [Class 106 (iii)] A peak accelerometer comprises a plurality of individual accelerometers designed to operate at different accelerations respectively, each individual acclerometer comprising a mass (17 ... 26) and one or more restraining wires or strips (27 ... 36) tensioned almost to breaking point and holding the mass directly or indirectly against the body of the instrument in the direction in which acceleration is to be measured, the arrangement being such that fracture of one or more of the restraining wires or strips will provide an indication of the peak acceleration to which the instrument has been subjected. The masses 17... 26 which are graded in size to measure, e.g., accelerations from 5g to 50g, in steps of 5g, are supported on guide-rods 13, 14 in a casing 39 which may have a graduated slot for observing the condition of the instrument. Clamping means 37 is provided to relieve the strain on the wires 27 ... 36 when the instrument is not in use, and a threaded stem 16 is for securing the instrument to a mounting.
Patent GB-285703-A (GB)
Title: Improvements relating to anti-dazzle devices for head lamps
IPC: B60Q1/14
Filed: 1927-05-31
Abstract: 285,703. Parkin, H. May 31, 1927. Lantern screens. -An anti-dazzle device for vehicle lamps comprises a tubular opaque screen D normally positioned in front of the light source C and adapted to be moved rearwardly so as to shut off part or the whole of the light falling on the reflector B. The screen D may be burnished or plated on its interior, and is connected to a rod E which passes through the reflector and is adapted to slide in bearings F in a bracket F<1> secured to the lamp casing A, a spring-stud R being provided to prevent vibration. A slot G in the rod E is engaged by a spring-biased lever H secured to a transverse rod J which is supported in bearings in brackets K preferably integral with the brackets F<1> of a pair of lamps. The screens of the two lamps are operated by a Bowden-wire L, connected at M to one of the levers Hand passing through a guide-hole P in a, canopy N which may be secured to or be formed integrally with the bracket F<1>.
Patent GB-1151048-A (GB)
Title: Aerial Input Circuit for Radio Receivers.
IPC: H04B1/24
Filed: 1968-03-27
Abstract: 1,151,048. F.E.T. amplifiers; aerial couplings. BLAUPUNKT-WERKE G.m.b.H. 27 March, 1968 [14 April, 1967], No. 14604/68. Headings H3Q and H3T. A capacitance tuned radio receiver has a field effect R.F. amplifier with its gate connected to the aerial and its source-drain path in parallel with the input tuned circuit. In the Figure the drain of the FET 4 is connected to the input amplifier of the receiver along path 8 and capacitively to the input tuned circuit comprising a variable capacitance diode 2 and an inductor 1. The gate is connected to the aerial and also to a source of bias potential U 3 , via a resistor 10. The source is connected to a potential terminal U 2  via an R.C. circuit 9. The tuning of the input stage is adjusted by means of the slider of a potentiometer 7, which is connected across the input stage via a filter stage comprising a choke 5 and a resistance 6. This arrangement may be used when the aerial capacitance affects the tuning of the capacitance-tuned receiver.
Patent GB-417403-A (GB)
Title: Improvements in or relating to tunnelling shields particularly of the type known as "hooded greathead shields"
IPC: E21D9/06
Filed: 1933-05-22
Abstract: 417,403. Tunnelling-shields. HUNT, H. H., 20, Foxon Lane Gardens, Caterham-onthe-Hill, Surrey, and KEARNEY, A. R., 136, Kenley Road, Merton Park, London. May 22,1933, No. 14713. [Class 85.] A tunnelling-shield, at its forward portion, is divided by horizontal platforms extending to the cutting edge of the shield into independent compartments each contracting rearwardly so as to compact the dislodged material, a discharge opening being provided at the contracted end of each compartment and having means for closing or regulating the area thereof. The chambers preferably contract both vertically and laterally and the components thereof may be readily removable. In Fig. 1, horizontal platforms t divide the shield into compartments each containing an independently slidable structure comprising beams a supporting an inclined wall b of straight or curved form and preferably provided with a door c. The discharge opening is controlled by-doors d which may slide vertically,or may swing in a vertical plane under hand control or by hydraulic &c. means. At the rear of each platform is provided a vertical'or inclined shutter e preferably formed of planks engaging channels so as to be variable in height. In another form, Fig. 3, the walls b are fixed to the shield and the doors d may pivot rearwardly.
Patent GB-119462-A (GB)
Title: Improvements in Valves for Internal Combustion Engines.
Inventor: LEMASSON EMILE
IPC: F01L7/08
Filed: 1918-09-11
Abstract: 119,462. Lemasson, E., and Lemasson, R. Sept. 15, 1917, [Convention datel. Valves; valve-gear.-A rotary valve 1 carries a balancing piston 25 and is actuated by a pair of wheels 5, 6 having their teeth so arranged as to press the valve continuously against its seat. The valve has a .single port which registers with inlet and outer ports in the head of the cylinders; it is connected to the balancing piston by a sleeve formed in one piece with the gear wheel 5.
Patent GB-908897-A (GB)
Title: Improvements in and relating to tachometer generators
IPC: G01P3/49
Filed: 1959-04-30
Abstract: 908,897. Induction generators. CONTRAVES A.G. April 30, 1959 [May 3, 1958], No. 14747/59. Class 35. A two-phase asynchronous tachometer generator, whose alternating voltage output from a secondary winding 8 is to be independent of changes in temperature and exciting current frequency, includes a compensating resistance 9 positioned within the generator housing 1 and of the same material e.g. copper as that of the generator exciting winding 7, and a reactance member positioned externally of the housing and serially connected with the resistance 9 and winding 7 across the output of an amplifier A the input of which is connected to receive in additive relation to the voltage E1 of an exciting voltage source a voltage bIr* which is a function of that appearing across the resistance 9. In the Fig. 3 embodiment the reactance member is a capacitor C and the resistance 9 feeds the amplifier A through another amplifier B, and in the Fig. 4 embodiment not shown the member is an inductance and a second compensating resistance 10 and inductance are provided to influence the voltage El. The rotor comprises an electrically conducting e.g. copper sleeve 6 disposed between laminated stator cores 3, 4 and fixed to a driven shaft 5.
Patent GB-542788-A (GB)
Title: Improvements in service trays or waiters or the like
IPC: A47G23/06
Filed: 1941-09-30
Abstract: 542,788. Trays. DURBER, J. H. Sept. 30, 1941, No. 14750/40. [Class 128] A tray 4 is fitted with a removable perforated liner of metal, synthetic resin, &c. which is supported clear of the base so as to afford a drainage space. The liner comprises a grid formed of two sets of circulat or part circular ribs 7, 8, held together by radiating ribs 9 formed with downturned ends 9a. The central ribs of the sets are also extended downwardly to rest on the base of the tray and are grooved at 8a, 10a. The liner is held in place by eccentrically mounted pivotal buttons 5. The invention may be applied also to the portable tops of tables and counters.
Patent GB-922305-A (GB)
Title: Inhibition of deposition of hydrocarbonaceous solids from oil
IPC: C09K8/524
Filed: 1961-04-24
Abstract: 922,305. Preventing and removing incrustation. DOW CHEMICAL CO. April 24, 1961 [April 28, 1960 (2)], No. 14768/61. Class 123 (1). A method of inhibiting the adhesion of solid hydrocarbonaceous materials from oil containing such materials on surfaces with which the oil comes into contact, especially in oil well equipment contacted by crude oil containing paraffin wax, comprises treating the surfaces with an aqueous dispersion containing a water-dispersible hydrophilic colloid-producing naturally occurring polymeric substance. The said substance may be animal glue, quebracho, gum arabic, amylose, gelatine, egg or blood albumin, alkali salts of lignosulphonic acid, propylene glycol-treated algin, saponin, Irish moss, casein or mixtures thereof. Before treating surfaces already coated with wax &c., such surfaces are cleaned and contacted with an aqueous alkaline solution. The surfaces are then contacted with an aqueous dispersion containing from 0.0025 to 1.0% by weight of the polymeric substance. Subsequently the dispersion is introduced into the oil flowing in the equipment at regular intervals, from 0.005 to 0.5 parts thereof of a concentration of from 0.01 to 0.3 grams per cubic centimetre being used per 100 parts of oil per day. The pH of the dispersion may be adjusted by the addition of an alkali metal hydroxide, carbonate or phosphate, preferably sodium hydroxide or trisodium phosphate.
Patent GB-891784-A (GB)
Title: Lithium chloride production
IPC: C22B26/12
Filed: 1958-05-08
Abstract: <PICT:0891784/III/1> A mixture of a lithium ore and calcium chloride is preheated, to dry and partially calcine the mixture, and roasted in a separate zone, whereby a gaseous mixture comprising lithium chloride is evolved, which is withdrawn without contacting the preheated mixture.  In the illustrated apparatus, moist granules of spodumene, calcium chloride, calcium carbonate and sand (the latter two components being added to provide Portland cement clinker as the solid product) are charged on to a travelling grate 3 and pass through a drying zone 9 and a pre-burning zone 12, separated by a baffle 13, and thence pass to a rotary kiln 6 having a burner inlet 8.  After roasting in the kiln, the solids fall into a cooling zone 17, through which they are passed by conveyer 22.  Cool air is forced through the conveyer; a portion is conducted counter-current through the rotary kiln after mixing with the burner fuel, thereby entraining the evolved lithium and other alkali metal chlorides which volatilize.  The mixed gases pass out through conduit 20 and may be passed through a heat exchanger, to recover heat and precipitate the lithium and other chlorides or may be treated as described and claimed in Specification 891,785.  The remainder of the air used for cooling may be passed through conduit 16, mixed with hot burner gas from conduit 15, passed downwardly through the grate in the pre-burning zone 12, passed into the upper part of the drying zone 9 and downwardly through the grate therein and finally withdrawn through conduit 11.
Patent GB-803875-A (GB)
Title: Pile-driving attachment for a tractor
Inventor: TOMPKINS DOUGLAS ARTHUR
IPC: E02D7/16
Filed: 1956-05-12
Abstract: 803,875. Tractors. TOMPKINS (LONG BUCKBY), Ltd., D. A. Feb. 22, 1957 [May 12, 1956], No. 14842/56. Class 79(1) [Also in Group XXI] Relates to a pile-driving attachment for a tractor 10 having a power take-off 11 and a pair of power-operated parallel arms 12 beneath a third arm 13. The attachment comprises vertical guides 14 for the weight 15 secured to the cable 18 passing over a pulley 19 at the top of the guides and around a winch 21 loose on the axle 39a and integral with the portion 41 of a clutch, the free end of the cable being anchored resiliently to an arm 26 on the weight. Manual clockwise rotation of a lever 33 engages the driving portion 40 of the clutch with the portion 41. Cushioned contact of the. weight with an abutment 31 moves a rod 32 upwardly to restore the lever 33 to the position shown and automatically effects declutching to permit the weight to fall under gravity.
Patent GB-738633-A (GB)
Title: Improvements in or relating to duplicating or like books
IPC: B42D1/00
Filed: 1954-05-20
Abstract: 738,633. Memorandum books. LAWTON, A. Aug. 24, 1954 [May 20, 1954], No. 14878/54. Class 16. A duplicating or other book provided with alternating fixed and detachable leaves, has each fixed leaf formed with a thumb recess, the recesses being in straight or angled alignment so that when the detachable leaves are removed in sequence after use, the next unused leaves may be found by opening the book at the bottom of the exposed portion of the thumb recess. The recesses are formed by a cut-away portion along one of the cut edges of the book. The invention is more particularly for duplicating books in which a carbon is inserted to form a copy, either on the fixed or detachable leaf, and the fixed leaves form a permanent record.
Patent GB-1330803-A (GB)
Title: Process and apparatus for imparting crimp to textile materials of thermoplastic yarn
IPC: D02G1/14
Filed: 1972-03-30
Abstract: 1330803 Crimping fabric and yarn J P STEVENS & CO Inc 30 March 1972 [27 May 1971] 14917/72 Headings D1F and D1S Thermoplastic textile material, e.g. woven or knitted fabric or yarns made of nylon, acrylics or polypropylene, is crimped by passing the material 6 between crimping elements 1, 2, the element 1 being a heated engraved roll and the element 2 being an unheated embossed element, and the material 6 is supported in the depressions of the element 2 until the thermoplastic material has reached its setting point. Preferably, the element 2 is a roll and may be an endless belt and is at least 100F cooler than the roll 1. The roll 1 is made of metal and the roll 2 may be made of comminuted wool and cotton which is compressed, moistened and run with the roll 1 until the desired embossing is effected by the engraving. The roll may be cooled by the circulation of a coolant therethrough. In addition, external cooling, e.g. a cold air blast, may be applied to the crimped material. A guide roll 5 or bar supports the material in the depressions during cooling and is positioned so that the material 6 is supported by the periphery of the roll 2 over an arc at least ten times the arc over which crimping takes place. Outfeed rolls 3, 4 are provided.
Patent GB-529447-A (GB)
Title: Improvements in or relating to paper tape recording equipment
IPC: B61L25/04
Filed: 1939-05-19
Abstract: 529,447. Electric signalling systems. STANDARD TELEPHONES & CABLES, Ltd., and BROWN, A. May 19, 1939, No. 14982. [Class 40 (i)] . In apparatus for transmitting information, such as descriptions of railway trains, having a recording device that perforates a paper strip and a hole-reading device that sets an indicator, such as that described in Specification 371,055, the reading mechanism is modified to enable a special " cancel " mark to be used to prevent the indicator from being set by a faulty description. The " cancel " mark may take the form of a single perforation in a special position, e.g., at the forward end of the section of paper strip immediately following the record it is desired to cancel. Thus, when this record is in reading position on the drum D where the plungers on the drum and the segments of the hood H would contact through the perforations and set the indicator, the special " cancel " mark formed in the following section of tape then in the storage loop SL coincides with a contact roller CR and finger CF so that the "clear out" circuit CL is closed starting the motor CM and clearing the faulty description from the drum D. The section carrying the cancel mark is thus moved on to the drum D and the cancel mark then coincides with a special segment CS in the hood H and again closes the " clear-out " circuit if there is another description in the storage loop SL, that is to say if the loop is slack enough to close the contacts SLC. Provision is made to prevent the normal description perforations from producing unwanted effects when passing between the special contacts CR, CF and CS.
Patent GB-582104-A (GB)
Title: Improvements in or relating to window casements
IPC: E05D7/08
Filed: 1944-08-05
Abstract: 582,104. Hinges. WILLIAMS, W. H. Aug. 5, 1944, No. 14983. [Class 65 (ii)] A pivot for a window comprises two Circular half - box components f and c, Figs. 2 and 5, the former having two spring-loaded blocks g, g<1> adapted, when the pivot is assembled, to lie in the passage e formed between two guide pieces d formed integrally with the pivot component c, so that the friction between the are-shaped heads g<1> of the blocks and the wall of the component f will hold the window in any position in which it is placed. Each of the blocks g, g<1> contains two springs h and j. The spring h presses the head g<1> against the wall of the component f and the spring j bears against a steel ball m which is adapted to enter recesses n so as to enable a number of windows to be easily opened to the same angle. The other ends of the springs h and j bear against a hard wearing sleeve k fitted on the central pillar l. A lubricator o allows the pivot to be greased after assembly.
Patent GB-1350524-A (GB)
Title: Press or stamping machine for continuous production of laminations
IPC: B21D43/22
Filed: 1972-03-30
Abstract: 1350524 Removing finished work L SCHULER GmbH 30 March 1972 [31 March 1971] 15033/72 Heading B3W Apparatus for forming perforated plates, e.g. stator laminations from metal strip comprises a punch press 2, 3, a shear 8 for successively severing from the strip individual plates each having had a central aperture punched out in it, a conveyer 9 for receiving the plates in overlapping relation and means for holding up the leading end of the strip which will form the next plate and preventing it sagging on to the conveyer until on shearing of the plate the holding means cause plate to fall on to the conveyer trailing end first. The holding means comprise magnetized rollers 11 so spaced and dimensioned that at the end of the feed stroke of the strip the rollers nearest the shear are above the aperture in the plate which is held only by engagement of the leading roller with the leading edge of the aperture, the trailing end of the plate being thrust down by the upper shear blade during the shearing stroke and landing on the conveyer before the magnetic attraction between the leading end of the plate and the leading roller is broken. The rollers are individually adjustable in the vertical direction in a guide plate 13 itself adjustable in the horizontal direction.