baber/WOPTO huggingface dataset:
Patent GB-1403019-A (GB)
Title: Output amplifier short-circuit protection circuits
IPC: H03K17/0814
Filed: 1972-07-21
Abstract: 1403019 Overload protection for amplifier SIEMENS AG 21 July 1972 [27 Aug 1971] 34153/72 Heading H3T An overload-protected switching amplifier comprises two transistors 7, 1 of like conductivity type with the emitter of one transistor 7 being connected via a diode 5 and a resistor 6 to the collector of the other transistor 1 whose emitter is connected to a reference potential and whose base is connected via a resistor to said reference potential, the collector of the other transistor also being connected to the base of the one transistor 7 and via a resistor 3 to the supply potential which also connects to the collector of the one transistor via a resistor 10, the polarity of the diode being arranged so that if the output terminal 9 is short circuited when transistor 7 is on, the diode passes into a breakdown Zener region and with transistor 7 forms a constant current source. The resistor 6 must be greater than 250#.
Patent GB-762880-A (GB)
Title: Improvements connected with workpiece driving means in or for gear grinding machines
Inventor: JELLIS MORGAN
IPC: B23F23/08
Filed: 1953-12-10
Abstract: 762,880. Gear-grinding. COVENTRY GAUGE & TOOL CO., Ltd. Dec. 9, 1954 [Dec. 10, 1953], No. 34354/53. Class 83 (3). [Also in Group XXIII] Work-driving means comprises releasable means 15 to be carried on a driving-plate 2 and to engage the arm 3 of a work-carrier 4. In a gear-grinding machine, the hob 9 and the workgear to which the carrier 4 is attached are driven at predetermined speeds to generate the gear. A plunger 26 is then depressed to engage an arm 23 and rotate a cam 21, thus allowing springs 19 to separate the arms 15 from the carrier arm 3. The gear is then free, within small limits, to be driven by the hob for finishing purposes.
Patent GB-901677-A (GB)
Title: Production of cellulose and furfural from vegetable materials
IPC: D21C5/00
Filed: 1959-10-09
Abstract: Cellulose and furfural are recovered from pentosan-containing vegetable materials by subjecting such materials first to a preliminary acid hydrolysis in the presence of a reducing agent selected from sulphur dioxide and formic acid, present in the gaseous phase and in aqueous solution, followed by heating the pentosecontaining liquid product with acid in the presence of a ring-closing agent selected from zinc chloride and aluminium chloride.  Specified materials include wheat, oat, maize, rye, rice, and olive-husks, nutshells, almond shells, bagasse and straw. Sulphur dioxide is preferably used in about 0,5% by weight concentration, based on the initial liquid phase, and formic acid in about 1% by weight concentration, on the same basis hydrolysis being desirably effected at not less than 100 DEG C. Conversion of the pentoses into furfural may be effected at not more than 185 DEG C. Both zinc chloride and aluminium chloride are used in concentrations of about 0,3% by weight of the anhydrous salts, based on the liquid phase.  The solid residue obtained from the hydrolysis and consisting mainly of cellulose, and is washed with water and dried.  The liquid product obtained after the reduction is distilled to yield furfural.ALSO:Cellulose and furfural are recovered from pentosan-containing vegetable materials by subjecting such materials first to a preliminary acid hydrolysis in the presence of a reducing agent selected from sulphur dioxide and formic acid, present in the gaseous phase and in aqueous solution, followed by heating the pentose-containing liquid product with acid in the presence of a ring-closing agent selected from zinc chloride and aluminium chloride.  Specified materials include wheat, oat, maize, rye, rice- and olive-husks, nutshells, almond shells, bagasse and straw. Sulphur dioxide is preferably used in about 0.5% by weight concentration, based on the initial liquid phase, and formic acid in about 1% by weight concentration, on the same basis, hydrolysis being desirably effected at not less than 100 DEG C. Conversion of the pentoses into furfural may be effected at not more than 185 DEG C. Both zinc chloride and aluminium chloride are used in concentrations of about 0.3% by weight of the anhydrous salts, based on the liquid phase.  The solid residue obtained from the hydrolysis and consisting mainly of cellulose, and is washed with water and dried.  The liquid product obtained after the reduction is distilled to yield furfural.
Patent GB-1146532-A (GB)
Title: An improved connection element for cables
IPC: H01R13/405
Filed: 1966-08-01
Abstract: 1,146,532. Two-part couplings. SUHNER & CO. A.G. 1 Aug., 1966 [22 June, 1966], No. 34450/66. Heading H2E. A socket (or plug) contact 12 crimped or soldered to a conductor 9 is held in bore 4 of insulator 5, by a split spring ring 16, which lies in annular grooves 14, 15. The insulator may be in two parts, Fig. 3, not shown, and have in one part, a steel ring (17) with one of the grooves in its inside surface. The insulator is provided with a metal or plastics casing (not shown) which may secure the two parts of the insulator together.
Patent GB-842436-A (GB)
Title: Improvements in or relating to control devices for electric motor driven apparatus
IPC: A45D20/22
Filed: 1958-10-28
Abstract: The invention comprises compounds of the formula <FORM:0842436/IV (b)/1> wherein R is a C1-6 alkyl, cycloalkyl, phenyl, C1-6 alkyl-phenyl, di-C1-6 alkyl-phenyl, halophenyl, nitrophenyl, carbobenzyloxy, carbo-C1-6alkoxy or aryl-C1-6 alkyl radical or heterocyclic group containing at least one nitrogen atom and carbon atoms and optionally a sulphur atom, the bond from the piperazine ring being attached to a <FORM:0842436/IV (b)/2> group in the heterocyclic ring, and X is halogen, and acid addition salts of these compounds.  Preferably the group CX3CO-is a trifluoracetyl group and R may be a phenyl, p-tolyl, 2:6-xylyl, chlorophenyl, benzyloxycarbonyl, ethoxycarbonyl, cyclohexyl, thiazolyl-(2), pyrimidyl-(2), pyridyl-(2), methoxycarbonyl, isobutyloxycarbonyl, benzyl, ethyl or propyl group.  The group CX3CO may also be a trichloroacetyl group.  The compounds are made by trihaloacetylating a 1-substituted piperazine for example by means of trihaloacetyl halide or anhydride, suitably at 15 to 85 DEG C. in an inert solvent. Certain dichloroacetyl compounds are described for purposes of comparison.
Patent GB-1106930-A (GB)
Title: Lock mechanism
IPC: E05B67/24
Filed: 1966-08-02
Abstract: 1,106,930. Locks. EAGLE LOCK CORPORATION.. 2 Aug., 1966 [19 July, 1966], No. 34571/66. Heading E2A. Cylinder lock mechanism in a padlock is protected by a seat 4 secured to the bottom surface of a slot 5 in the lock casing, the seal being compressed by an element 3 secured to the mechanism by a screw 8.
Patent GB-356041-A (GB)
Title: Improvements in and relating to submarine electric cables
IPC: H01B7/14
Filed: 1930-11-18
Abstract: A composition of the kind described in the parent Specification for insulating submarine cables comprises a mixture of albumen, free guttapercha or balata with synthetic hydro-caoutchouc or with natural hydro-caoutchouc which has been freed from albumen.  The removal of the albumen from natural hydro-caoutchouc may be effected before or after hydrogenation by treating the material with alkali at raised temperature, whereon the albumen is converted into water-soluble compounds which may be removed by washing.
Patent GB-1088410-A (GB)
Title: Improvements in windscreen wipers for vehicles
IPC: B60S1/38
Filed: 1966-08-03
Abstract: 1,088,410. Windscreen wipers. ROBERT BOSCH G.m.b.H. Aug. 3, 1966 [Aug. 7, 1965], No. 34753/66. Heading A4F. A windscreen wiper comprises a rubber or rubber-like wiper blade 1 having longitudinal grooves 8 accommodating metallic stiffening bars 2 which are secured against longitudinal displacement in the grooves by retaining shoulders 17 on the wiper blade, the retaining shoulders 17 being formed on projections 16 which extend from the bases of the grooves and which fit into recesses 18 in the adjacent edges of the stiffening bars 2. The wiper blade comprises further longitudinal grooves 11 which accommodate claws (9) (Fig. 1, not shown) of a blade supporting assembly comprising a main yoke (4) and auxiliary yokes (5), the further grooves 11 being provided with projections (23) (Fig. 5, not shown) of saw-tooth shape which together with an end portion of the wiper blade - form shoulders (20) against which two of the claws (9) are abutted. The end portion also provides a shoulder 15, Fig. 4, which forms an end abutment for the bars 2.
Patent GB-1148106-A (GB)
Title: Molding materials comprising a polydiene and a phenolic stabilizer
Inventor: NAARMANN HERBERT
IPC: C08G8/30
Filed: 1966-08-03
Abstract: 1,148,106. Phenolic stabilizers for moulding materials. BADISCHE ANILIN- & SODAFABRIK A.G. 3 Aug., 1966 [4 Aug., 1965], No. 34758/66. Headings C3G and C3P. A moulding material comprises a polydiene and a phenolic stabilizer which is a reaction product of a phenol, a polydiene having a molecular weight of 500 to 20,000 and an olefin. In Examples 1-3 a mixture of styrene, ethylbenzene, and polybutadiene is polymerized in the presence of the reaction product of polybutadiene, o-cresol, and diisobutylene and the solid product is granulated. In Example 4 the reaction product of polybutadiene, phenol, and iso-octene is added to an already polymerized mixture of styrene and polybutadiene. The reaction products are prepared by reacting the ingredients in solution in the presence of such acidic catalysts as sulphuric acid and cation-exchanger in (H) + form.
Patent GB-1448925-A (GB)
Title: Drive for a multi-colour sheet-fed rotary printing machine
IPC: B41F13/00
Filed: 1974-08-07
Abstract: 1448925 Printing machines HEIDELBERGER DRUCKMASCHINEN AG 7 Aug 1974 [9 Aug 1973 31 Oct 1973] 34792/74 Heading B6C A multi-colour rotary printing press has printing units 1-4, the the units being driven by a gear train 23 comprising gear wheels attached to cylinders 7-20 all in mesh, drive to this gear train being supplied at at least two points from a drive train from respective drive elements, e.g. 33, 34 thereof, the drive elements being capable of movement in a direction along the gear train, and being so interconnected that movement of one such element produces a compensating movement in the next such element. As shown, drive shaft 27 has a slidable coupling 28, and the two parts are accommodated in bearings 35, 37 interconnected by hydraulic line 39. Means 40 may be provided to allow automatic or manual adjustment of the compensating movement. In another embodiment (Fig. 2, not shown), a unitary drive shaft drives two separate shafts with freedom of movement along the gear chain. In the embodiment of Fig. 3 (not shown), a unitary drive shaft is slidably mounted and acted upon by a spring.
Patent GB-1044926-A (GB)
Title: Improvements in or relating to picks and pick-mountings and combinations thereof formining machines
Inventor: CAMDEN WALTER
IPC: E21C35/19
Filed: 1964-08-26
Abstract: 1,044,926. Mining pick-securing means. TODWICK MINING MACHINERY CO. Ltd. Aug. 18, 1965 [Aug. 26, 1964], No. 34853/64. Heading E1F. The shank of a pick is of such a length that when the head of the pick abuts against a pick box with the shank housed in a bore extending completely through the box it extends beyond the box so that a pin can be passed through and be releasably retained in a transverse hole positioned in the projecting part of the shank at a level at which the pin also presses against the box. Several preferred embodiments are described.
Patent GB-367848-A (GB)
Title: Improvements in or relating to the refining of oils
IPC: C10G27/14
Filed: 1930-11-19
Abstract: Hydrocarbon oils are purified by treating the preferably dry liquid or vapour with ozonized air, washing with alkali, and redistilling. Treatment with catalytic, contact, or condensing agents polymerizing gum-forming constituents may accompany or follow the treatment with ozonized air, and the oil may be filtered before the alkali wash. The ozonized air may be blown or otherwise passed through the oil, if desired under reduced pressure, or the oil may be sprayed into ozonized air.  Catalysts &c. specified are sulphuric acid, chlorides or sulphates of heavy metals, e.g. zinc chloride, iron chloride, sulphate, or persulphate, tin chloride, and copper sulphate, a mixture of iron chloride or sulphate or other heavy metal salt with diluted sulphuric acid, fuller's earth, floridin, and bauxite. Sodium hydrate or carbonate, and calcium hydrate are specified alkalis. In an example, a petroleum fraction is passed down a bubble tower at atmospheric temperature against an ascending current of ozonized air; the issuing oil is vaporized and passed up a tower packed with floridin, condensed, filtered, washed with lime water, and fractioned.  Specifications 17371/99, 22430/06, 8486/07, [all in Class 91, Oils &c.], and 346,152 are referred to.  Reference has been directed by the Comptroller to Specification 346,152.
Patent GB-485279-A (GB)
Title: Improvements in gear cutting tools
IPC: B23F21/24
Filed: 1937-12-16
Abstract: 485,279. Milling - cutters for gear-cutting. GLEASON WORKS. Dec. 16, 1937, No. 34898. Convention date, Jan. 15. [Class 83 (iii)] A face-mill gear-cutter particularly for cutting curved-tooth bevel or hypoid gears comprises a number of segments 16 each having several integral teeth 21 and being secured to a rotary head 15. The segments are of arcuate shape and have part-conical inner surfaces 22 and plane bottom surfaces 23. These surfaces fit respectively against a corresponding conical surface on the head and on a plane surface 27 at right-angles to the cutter axis. In Fig. 1 each tooth has an outside cutting-edge only, for finishing concave tooth sides, and the usual top and side clearances are provided. For locating the segments angularly, the head is provided with a number of slots 30 adapted to receive keys 35 which have plane sides which engage against the radial sides of the notches and serve as stops for engagement by the plane end surfaces 34 of the segments. The keys may be welded in position. Each segment is secured by a pair of bolts 40, the bolt holes 41 permitting slight angular adjustment of the segments, and tightening the bolts tends to draw the segment tightly against the seatings 25 and 27. A modification, Fig. 3, shows a single cycle cutter which finishes a previously roughed out tooth space, a gap A being provided in the cutter periphery to permit indexing when the gap is abreast of the blank. In this case, the successive teeth 56 ... 69 have alternating outside and inside finishing edges arranged to take successive cuts as shown in Fig. 9. The spaced cutters 70 and 71 mounted on a separate segment 511, take finishing cuts on opposite flanks. In some cases the cutters 68 and 69 may also be finishing cutters having edges at the same radial distances from the cutter axis as those of the teeth 70 and 71. The first segment 51a has only two teeth so as to provide a sufficiently large gap for indexing. In another modification the cutting segments may be secured to the inside surfaces of a head such as the outer cutter of a pair of eccentrically mounted face-mill cutters. In a further modification the locating ledge 26 may be provided on a separate plate secured to the cutter body.
Patent GB-282797-A (GB)
Title: Improvements in or relating to dust suction apparatus
IPC: A47L5/22
Filed: 1927-12-28
Abstract: 282,797. Inventia Patent-Verwertungs-Ges. Dec. 29, 1926, [Convention date]. Centrifugal machines.-Dust suction apparatus with a centrifuge 1 has a guide ring 3 bent back to form passage with the casing 5. This passage has a cross-section which increases in a direction awav from the centrifuge, and blades 2 are provided, preferably by stamping, on the bent part 4 of the member 3 to turn the air steam into an axial direction. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which blades are attached to one side or to both sides of a ring attached to the suction cleaner casing. This subject-matter does not appear in the Specification as accepted.
Patent GB-1502885-A (GB)
Title: Cabinet for the handling or treatment of materials therein in a protected atmosphere
IPC: B08B15/02
Filed: 1975-08-26
Abstract: 1502885 Fume cabinets J J LANDY 26 Aug 1975 35195/75 Heading F4X A cabinet for the handling or treatment of materials therein in a protected atmosphere (e.g. biohazardous or portentially hazardous materials or materials requiring a dust-free environment whilst being handled), comprises a generally upright rectangular casing 11 with a transparent front viewing panel 20 and containing a blower 18 for continuously recycling the atmosphere within the cabinet upwardly through a plenum chamber 19 and downwardly through a filter 12 to the space above a work tray 15 (shown as being positioned in a perforated support 30), the viewing panel 20 being so shaped at 22 as to cause in the downflowing air stream a deceleration and consequent negative pressure in the vicinity of the work tray and thereby inhibiting any outflow of air from the cabinet via an opening 25 provided at the lower end of the panel for admitting make-up air and for hand access to material on the work tray 15. Excess air is discharged from the cabinet through a filter 14. The viewing panel 20 is hinged at 21 and is also detechable. A further form of the cabinet (Figs. 2, 6 and 7) suitable for mounting on a bench, is described.
Patent GB-1313310-A (GB)
Title: Sewing machine
IPC: D05B77/00
Filed: 1970-07-21
Abstract: 1313310 Drawer guides NECCHI SpA 21 July 1970 [21 July 1969] 35237/70 Heading A4B [Also in Division D1] A drawer 19 in a work bed extension 18 for a sewing machine (see Division D1) has a part 29 guided in a channel 28 of the extension and two lugs 36, 34, the latter being T-shaped which lugs are received in a slot 33 in the base of the extension. To open the drawer the front is first lifted as shown to move lug 36 from the slot 33. To remove the drawer the rear is first raised Fig.4 (not shown) to pass arms (38, Fig.3 not shown) of the T-shaped lug 34 through a wider part 39 at the rear of the slot 33.
Patent GB-819595-A (GB)
Title: A step-by-step motor
Inventor: THOMAS ALBERT GALLATIN
IPC: G05D3/10
Filed: 1956-11-19
Abstract: 819,595. Electric motors. INDUSTRIAL CONTROLS CORPORATION. Nov. 19, 1956, No. 35270/56. Class 35. [Also in Group XL (b)] A step-by-step motor with windings energized in sequence has a braking device to prevent movement in excess of one step in the undesired direction of rotation. As shown, the rotor has three toothed wheels side by side on a shaft, the teeth on the three wheels being staggered, and these co-operate with three similar stator members side by side, teeth on the stator members being aligned and having windings connected to three brushes of the same polarity on a commutator which also has a common negative brush so that the windings are energized in sequence. A roller 35 on a bar 37 pivoted on one end of stator frame engages double wedge member 32 to prevent anticlockwise rotation, the roller 35 also engaging a ring 31 carried by the rotor, but if it is clockwise motion that is to be prevented electromagnet 41 overcoming spring 40 is energized so that wedge surface 34 becomes operative with the roller. In Fig. 4, the sequential energization of the motor windings is through valves 103, 104, 105 becoming conductive in turn, the tappings on the resistances in their circuits being connected to secondary winding terminals of a selsyn motor 182 which has an arrangement for ensuring that electromagnet 41 (operative as in Fig. 2) is energized if the sequence of energizing the motor windings is changed. A brake operative only for the undesired direction could be used instead of the device in Fig. 2.
Patent GB-740958-A (GB)
Title: Improvements in or relating to culinary mixes
IPC: A21D10/00
Filed: 1953-12-18
Abstract: In the preparation of dry mixes of flour and shortening for mixture with water, milk or other edible aqueous liquid to form batters and doughs for bread, cakes, biscuits, pie crusts, pancakes, &c., the shortening is incorporated in a liquid, supercooled condition.  The shortening may be rapidly chilled under agitation to a product in which there are crystal nuclei in a substantial proportion of shortening in liquid, supercooled condition, and the product may then be atomized for mixture with the flour.  The preparation may be continuous, atomized supercooled shortening and flour being fed together at appropriate rates, mixed, and continuously withdrawn. Sugar, dried whole egg, dried egg white, dried milk, salt, spice powders, and a leavening material such as sodium bicarbonate with an acid salt may be mixed preliminarily with the flour.
Patent GB-605610-A (GB)
Title: Improvements in and relating to the control of two-stroke internal combustion engines of the fuel injection type
IPC: F01L7/12
Filed: 1945-12-31
Abstract: 605,610. Regulating. SOC. ANON. A. SAURER. Dec. 31, 1945, No. 35294. Convention date, March 24. [Class 7 (vi)] In a two-stroke engine the timing of the closing of an engine driven valve 8 in the exhaust pipe is adjusted according- to the pressure drop in a Venturi 19, in the charge supply line, which is varied by a throttle 21 operated simultaneously with the fuel pump 28. The throttle 21 may be located in a byepass and instead of a foot-operated throttle, which is mechanically connected with the fuel pump control, the latter may be operated by the pressure drop in a branch Venturi acting on a spring-loaded diaphragm. The Venturi may be on the delivery side of the pump 18. The pressure drop is conveyed by a pipe 29 to act on a spring-loaded diaphragm 31 which moves a sleeve 14 keyed to shafts in the drive of the valve 8 by straight and inclined keyways.
Patent GB-1176058-A (GB)
Title: Game.
Inventor: GLASS MARVIN IRVING
IPC: A63F9/00
Filed: 1967-08-01
Abstract: 1,176,058. Game. M. I. GLASS [trading as MARVIN GLASS & ASSOCIATES]. 1 Aug., 1967 [25 Nov., 1966], No. 35299/67. Heading A6H. Apparatus for playing a game comprises a plurality of playing pieces each having detachably fixed thereto a relatively long and flexible element, a platform containing a tray adapted to hold the playing pieces, a cover for the tray, and chance means for determining the movement of the cover relative to the tray during the play of the game. The playing pieces may simulate an animal or insect with the long element being the tail, and one end of the long element may be enlarged and adapted to be forcibly inserted in a relatively smaller opening in the playing piece.
Patent GB-860586-A (GB)
Title: Improvements in or relating to spring assembling machines for the manufacture of inner spring mattresses, upholstered furniture and the like
IPC: B21F33/04
Filed: 1958-11-04
Abstract: 860,586. Assembling mattress springs. BUESST & BILLS BROS. PROPRIETARY Ltd. Nov. 4, 1958 [Nov. 8, 1957], No. 35336/58. Class 52(4). [Also in Group XXII] An attachment to'a machine for connecting the coil springs of a mattress by helical springs comprises helical spring engaging means movable into a position in the path of travel of the connecting helicals, and operable in that position to engage and bend or clench a coil of said helical against the main length thereof. Adjacent rows of mattress springs, held between movable and fixed jaws 14a, 14 of clamps 12, each clamp being closed independently by its respective hand lever 36, are connected by a helical wire fed from a head 17 through helical grooves 16 in the clamps 12.