baber/WOPTO huggingface dataset:
Patent GB-724175-A (GB)
Title: Method of and apparatus for charging accumulator batteries
IPC: H02J7/32
Filed: 1950-08-17
Abstract: 724,175. Charging batteries. COMPAGNIE GENERALE D'ELECTRICITE. Aug. 17, 1950 [Sept. 16, 1949], No. 20430/50. Class 38 (4). In a method of charging an accumulator battery wherein, during charging, a device is used for regulating the charging current as a function of the difference T between the battery internal temperature and the ambient air temperature, the device intervenes during charging only when the said difference T exceeds a value Te predetermined by the charging rate permitted when a fully charged battery is overcharged, the charging current then being reduced by means actuated by the device until the temperature difference T is lower than or equal to the predetermined value Te. The apparatus shown for effecting the method comprises a two-rate charging dynamo D, a field resistor SH of which is normally shorted out by the contacts of a relay R, the coil of which is normally de-energized. When T exceeds Te the device 18 energizes the relay coil to reduce the charging rate until the battery temperature drops, and in a charging operation the charging current/time graph shown illustrates a maximum current Im until time T, when T exceeds Te, followed by a series of alternately maximum and minimum currents as T rises and falls, yielding an average current of Imoy as the charge increases until time T 2  when the final minimum rate of charge Im is commenced. An alternative apparatus, not shown, comprises a bridge-connected rectifier fed through a transformer from an A.C. source, the device comprising a Wheatstone bridge of resistors connected across the battery and the output of which bridge controls, through an amplifier, a saturable reactor in the transformer primary circuit. Divisional Specification 724,259, which relates to the constructions of the device, is referred to.
Patent GB-844721-A (GB)
Title: Improvements in or relating to underfeed stokers for boilers, furnaces and similar apparatus
Inventor: LAUDER JOHN PATON
IPC: F23K3/14
Filed: 1958-06-26
Abstract: 844,721. Controlling underfeed stoker furnaces. HODGKINSON (SALFORD) Ltd., J. March 23, 1959 [June 26, 1958], No 20487/58. Class 51 (1). In a furnace having an underfeed stoker and forced draught fan controlled by a thermostat, a time lag is introduced between the stopping of the fuel feed and the stopping of the fan, and be tween the starting of the far and the starting of the fue feed. A delay may be introduced in the starting circuits of the motors driving the fue feed and the fan, or both the motors may be started or stopped together, and a clutch in the fuel feed drive introduces the delay. In one form of control circuit, Fig. 3, the contacts 19 of a programme clock 7 in series with overload circuit breakers for both the fan and fuel feed motors are in series with an on-off switch 4 and an emergency switch 3. When the stoker is switched on, the coil 10 of the fan contactor is energized through normally closed contacts 8, 9 of a change-over switch on the stoker contactor to start the fan. A delayed switch 11, 12 on the fan contactor closes after a suitable delay to energize the stoker contactor coil 14 and close contacts 15, 16 to by-pass the fan contacts 11, 12, open contacts 8, 9 and close contacts 9, 17. The stoker runs intermittently under the control of a timer 13 set to regulate the amount of fuel feed, but the delay on the changeover switch 9, 17 holds the fan running until the circuit is switched off the programme clock 7 or switch 4, when the stoker motor stops and after a suitable delay, the changeover switch 8, 9, 17 acts to de-energize the fan. An overriding switch 18 by-passes the programme clock 7 and a "hold-fire" timer 5 operates to start the air and fuel feed at intervals to maintain a low fire when the circuit is switched off, by-passing both the programme clock 7 and the on-off switch 4, but not the emergency switch.
Patent GB-694403-A (GB)
Title: Improvements in or relating to shears for cutting bar iron
IPC: B23D21/00
Filed: 1951-08-30
Abstract: 694,403. Shearing. WAGENBACH, A. Aug. 30, 1951 [Aug. 30, 1950], No. 20500/51. Class 83 (iv). In a machine for shearing metal bars with at least one movable blade the direction of movement AA of the blade is inclined to the axial feed direction of the bar 3 at an angle equal to the cutting angle α of the blade in order to prevent slewing of the bar during shearing. The machine may be mounted on a wheeled carriage moved at right-angles to roller tables for feeding bars to and from the shears.
Patent GB-894449-A (GB)
Title: Insulated mounting clamp for electrical componets
IPC: H05K7/12
Filed: 1960-06-10
Abstract: 894,449. Clips; stud and socket fasteners; locking bolt-like pins. BENDIX CORPORATION. June 10, 1960 [June 17, 1959], No. 20523/60. Classes 44 and 89(1). A mounting clamp 10 of resilient plastic material, e.g. nylon, for an electrical condenser 18, for example, comprises a base portion 17 having two arms 14, 16 projecting from one side of the base portion for resiliently clamping the condenser, and a stud 24 integral with the base portion and projecting from the opposite side thereof, the base portion having a cavity 40 therein for receiving a stud on a similar mounting clamp disposed at the opposite side of a supporting plate 12, the studs being pressed through respective hole 30 in the plate 12 before being pressed into the opposing cavities. If only one clamp is used a separate stud replaces the other clamp and is received in the cavity 40 of the clamp being used. An annular channel may be provided in the base portion 17, Fig. 5 (not shown), around the base of the stud 24 to clear any protrusion on the plate at the co-operating hole 30. A recess may be provided in the base portion for receiving the end of a tool of an arbor press so as to locate the tool for the latter to press the stud 24 into the co-operating hole 30 and the end of the stud 24 may be dimpled to provide a guide for a drill in the event of removal of the stud from the plate. Several studs may be provided on the clamp.
Patent GB-779629-A (GB)
Title: Manufacture of butadiene -1, 3
IPC: C07C7/11
Filed: 1953-07-23
Abstract: Butadiene-1,3 is prepared by catalytic dehydrogenation of a gaseous hydrocarbon mixture containing a substantial quantity of n-butylenes of greater saturation than butadiene-1,3 at elevated temperature, e.g. 1000-1200 DEG  F., utilizing a calcium-nickel phosphate catalyst, fractionation of the products to isolate the C4 fraction, and extraction of butadiene-1,3 from the C4 fraction with copper ammonium acetate, characterized by extracting with water, prior to the butadiene extraction, most of the ketones formed during the dehydrogenation reaction.  The extraction with water is preferably affected prior to the fraction step, though it may be effected after. The gaseous reaction product from the dehydrogenation step in preferably cooled to 160 DEG  F. and passed upward through a packed tower and is washed by a stream of ketone-free water passing downward through the tower.  The substantially ketone-free gases leave the top of the tower and pass to the fractionation and butadiene extraction steps.  The water collecting at the bottom of the tower and containing extracted ketones is continuously removed and may be fed to a stripping tower where the ketones are stripped out by steam. The ketone-free water is returned from the bottom of the stripping tower to the top of the extraction tower.  With a rate of flow of gases of the order of 25,000 to 40,000 lb. per hour, a suitable rate of circulation of water through the extraction tower is 30,000 lb. per hour.  The ketone impurities removed in this way are chiefly acetone, methyl ethyl ketone and methyl vinyl ketone. The butadiene extraction may be performed in two steps, firstly contacting the C4 fraction with a small amount of the copper ammonium acetate whereby the more soluble acetylenes are removed, and secondly contacting the substantially acetylene-free C4 fraction with a larger amount of copper ammonium acetate to extract the butadienes.  A suitable method of carrying out the extraction is described in Specification 779,402. The acetylenes extracted in the first step may be recycled to the dehydrogenation reaction to improve the yield of ketone by-products. Specification 634,580 also is referred to.
Patent GB-779660-A (GB)
Title: Liquid containers
Inventor: WAREING ROBERT JOSEPH
IPC: B64D37/02
Filed: 1954-07-14
Abstract: 779,660. Interfitting joints. IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 8, 1955 [July 14, 1954], No. 20542/54. Class 20(2) [Also in Group XXIX] In a joint between two parts having interfitting end portions, at least one of the parts has a groove filled with a hot-curing or coldcuring resin. As shown, the parts 1 and 3 of resin impregnated glass cloth, have abutting surfaces 5, 9 and 13, and 7, 11 and 15 respectively, and annular grooves 17 and 19 respectively, the resin being poured into an inclined feed passage 21 to displace air through a passage 23 while the edges of the joining surfaces are covered by adhesive tape. 'The annular' grooves 17, 19 may be replaced by spiral grooves. The joint is between two parts 1, 3 of an aircraft fuel tank.
Patent GB-788194-A (GB)
Title: Improvements in or relating to the dry spinning of artificial threads
IPC: D01D5/04
Filed: 1955-07-15
Abstract: <PICT:0788194/IV (a)/1> Artificial threads, particularly of polyacrylonitrile, are dry-spun by extruding a spinning solution through a spinneret into an externally heated spinning cell through which is blown a current of a hot gas in the direction of travel of the extruded filaments, the current being of laminar flow free from turbulence and eddy currents and the temperature of the gas first entering the cell being 10-70 DEG  C. (preferably 20-40 DEG  C.) above that of the inner surface of the portion of the cell wall in the vicinity of the spinneret; the hot gas is introduced into the end of the spinning cell in such a manner that the stream of extruded filaments is surrounded by a substantially uniform cylindrical sheath of the gas travelling at a linear velocity below that at which the flow of the gas becomes turbulent.  In the example and as shown in Fig. 2, a 20 per cent solution of polyacrylonitrile in dimethyl formamide is extruded through a spinneret 6 into a cylindrical spinning cell 1 maintained at 160 DEG  C. by a jacket 2 through which a heating medium enters at 3 and leaves at 4.  Air at 200 DEG  C. is blown into the top of the spinning cell through the perforated annular pipe 7, nickel gauze screen 8 and hollow truncated cone 14, the wide upper end of which is in gas-tight contact with the wall of the spinning cell and at about the level of the spinneret face.  The truncated cone 14 narrows in the direction of travel of the filaments 5 and is coaxial with the spinneret.  A secondary current of air at 200 DEG  C. is supplied to the cell 1 through a tube 10 and an annular duct 11 having openings 12 and is downwardly directed by the annular baffle 9, the rate of supply of the primary and secondary hot air currents being equal.  Both air streams leave the cell through the perforated annular tube 15, and the thread is collected on the wind-up reel 16.  Specification 614,959 is referred to.
Patent GB-217795-A (GB)
Title: Improvements in or relating to slat blinds
IPC: E06B9/262
Filed: 1923-08-13
Abstract: 217,795. Friend, J. Aug. 13, 1923. Slat and lath fabrics.-An accordian-pleated blind comprises slats 11 woven together by warp cords &c. 12. The slats may be of metal, corrugated and enamelled, and are provided with indentations 13 to accommodate the knot or twist of the warp cords &c. 12.
Patent GB-1221149-A (GB)
Title: Herbicidal composition
IPC: F16S3/06
Filed: 1969-04-22
Abstract: 1,221,149. Herbicide with mixed active ingredients. PROGIL. 22 April, 1969 [29 April, 1968], No. 20620/69. Heading A5E. A composition suitable for use as a herbicide comprises a substituted urea which is N- (4-chlorophenyl)-N',N'-dimethylurea or N-(3,4- dichlorophenyl)-N',N'-dimethylurea; a phenoxyacetic acid which is 2,4-dichlorophenoxyacetic acid, 2,45-trichlorophenoxyacetic acid or 2-methyl-4-chlorophenoxyacetic acid or a derivative thereof; 2,2-dichloropropionic acid or a derivative thereof; and 0.5 to 8% by weight of 4-amino-3,5,6-trichloropicolinic acid or a derivative thereof.
Patent GB-903608-A (GB)
Title: Improvements in or relating to extendable ladders
IPC: E04F11/06
Filed: 1960-06-11
Abstract: 903,608. Ladders. KING, J. H. L. June 7, 1961 [June 11, 1960], No. 20628/60. Class 20 (2). An extendable ladder comprises relatively slidable sections 10, 11, each having a plate 20 at the top and bottom, respectively, each plate having a grooved extension 22 engaging a laterally-extending longitudinal flange 21 on the other section. The section 11 is slidable on slides 25 mounted on pivots 27 on brackets 12 fixed at the edge of a loft trap door and is also slidable on a pair of slides 37 mounted on a spring 34 fixed to the trap door. Each side member of the sections comprises two parallel members 15, 16 connected by the steps 17 and between which the slides 25, 37 slide. A stopplate 23 stops the ladder with the end three steps of each section in register. The descent of the ladder is controlled by springs 28 on the pivots 27 having their ends connected to the brackets 12 and slides 25 respectively, and by pairs of links 39, the links of each pair having one end sliding in a slot 40 in the bracket 12 and the other end of one being connected to the section 10 and of the other to the slide 25.
Patent GB-1162358-A (GB)
Title: Machining Convex Cylindrical Surfaces
Inventor: REED NEVILL STANLEY
IPC: B24B37/00
Filed: 1967-05-04
Abstract: 1,162,358. Abrading. TECHNOLOGY, MINISTER OF. 6 May, 1968 [4 May, 1967], No. 20694/67. Heading B3D. A method of producing a convex cylindrical surface 13 on an article 11 comprises resting or holding the article in contact with a lapping member 26 having a substantially plane cutting face region, securing an actuating arm 28 rigidly to the article so that the arm can lie in contact with a bearing member 27 at an acute angle to the cutting surface, and applying a longitudinal reciprocating motion to the arm relative to the bearing member and the lapping member whilst the arm remains in contact with the bearing member and the article is pressed against the lapping member. The article, which may comprise a slipper to be held accurately with regard to a magnetic information storage disc of a computer, has a boss 12 which is raised from a base 11 and has a surface 13 to be formed with the convex cylindrical surface. The base has holes 14 by which the article is secured by bolts passing through holes 40 to a supporting plate 32, three articles being initially mounted on the plate which is initially loosely connected by a bolt 34 to one end of the arm 28. The other end of the arm slides on a vertically adjustable bearing block 27, the block being adjustable so that the arm makes an acute angle C corresponding to the curvature to be formed on the surface 13. Before lapping and with the three articles engaging the lapping plate, the bolt 34 is tightened to secure the plate 32 rigidly to the arm 28. Thereafter, the article nearest the bearing block 27 is removed and the arm reciprocated in the direction A by a crank mechanism to form a convex cylindrical surface on the article. A weight 35 may be secured to the arm 28 and a further arm 37 which is connected to a rod 36 carrying the weight is reciprocated in the direction B to prevent localized wear of the lapping plate.
Patent GB-603245-A (GB)
Title: Improvements in or relating to adjustable reclining chairs or like articles of furniture
IPC: A47C1/035
Filed: 1945-08-13
Abstract: 603,245. Adjustable chairs. LORENZ, A. Aug. 13, 1945, Nos. 20816 and 20817. Convention dates, Aug. 11, 1944, and May 1, 1945. [Class 52(ii)] The back 30, seat 32, top bars 36 and front bars 38 of a seat structure are pivotally connected to form a linkchain and can swing about pivots 34 on the supporting frame 20 under the restraint of a link 46 pivoted at one end to the seat frame and at the other to the top or front bar of the link-chain. A friction clamp 56 when tightened holds the linkage in adjusted position. The frame may be of the office-chair type with a vertical adjusting screw 28, and stops 52, 54 are provided to limit the range of adjustment of the seat structure. The backmay be extended and linked to a legrest 562, Fig. 5, and alternative pivot-holes 570 may be provided in conjunction with extensible links 546, 539, 568 in order that the shape of the linkage may be modified.
Patent GB-360934-A (GB)
Title: Polymerization of rubber distillates
IPC: C08F36/04
Filed: 1930-07-10
Abstract: A distillate obtained by heating unvulcanized rubber for instance to 280 DEG  C. is heated in an autoclave to 240-300 DEG  C. in the presence of magnesium or a magnesium alloy, a pressure of about 300 lb. being produced, which may be increased slightly if desired by any convenient means.  After 8 hours the product is a viscous liquid suitable for adding to varnish for printing inks, but after 3 days the product is a hard resin suitable for making paints and varnishes and of high dielectric strength.
Patent GB-1086055-A (GB)
Title: Improvements relating to lagging boxes for nuclear reactors
Inventor: WARD FRANCIS ROBERT
IPC: G21C1/30
Filed: 1963-05-24
Abstract: 1,086,055. Reactors. FAIREY ENGINEERING Ltd. Aug. 21, 1964 [May 24, 1963], No. 20926/63. Heading G6C. A lagging box for thermally insulating a part of the core of a nuclear reactor is made of flexible sheet material, e.g. stainless steel, and has a pair of parallel opposite walls which respectively face hot and cold regions required to be insulated from one another by the box, the box being filled with a thermal insulating material, e.g. vitreous silica fibre, and the walls being pierced by registering apertures, each pair of which is interconnected by a tubular sleeve affording access through the thickness of the box, each sleeve being welded at one end to the wall around the associated aperture in that wall, but at its other end projecting through a closefitting aperture in the wall without being rigidly secured to it. A cylindrical liner sleeve of stainless steel may pass through the centre of the box, being secured to the walls in a similar manner to the other sleeves. The above construction allows the box to expand freely within acceptable limits by the flexing of its walls under the temperature stresses induced by a substantial temperature differential across the box. A lagging box of the above type is used in a zero energy gas-cooled graphite-moderated experimetal reactor (Fig. 1, not shown), the core of which comprises a central test region 13 and an outer driver region 12, both of stacked graphite blocks, the latter affording the necessary fuel and control elements and being surrounded by an outer annular layer of graphite reflector blocks. The central test region 13 is removable as a whole for the purpose of changing the pattern of fuel elements contained in it and is formed with a central, vertically-extending void 14 housing an interchangeable tube 15 in which a specimen can be slowly oscillated vertically. The temperature of the central test region 13 is maintained at about 450‹ C. by hot carbon dioxide passed upwardly through vertical passages in this region and a curtain of hot gas flowing upwardly through passages in the wall of a thermal barrier 17 separating this region from the driver region 12, the thermal barrier 17 consisting of a layer of carbon black between graphite walls. The driver region 12 is operated at a much lower temperature, in the region of 60‹ C., cool carbon dioxide being passed through passages in the driver region 12, between this region and the pressure vessel 11, and between this region and the external face of the thermal barrier 17. Above the moderator 10 of the reactor there is provided an annular gamma shield 22 overlying the driver region 12, a cylindrical gamma shield 23 extending vertically above the top of the thermal barrier 17, and a circular gamma shield 24 which covers the top of the shield 23. Lagging 25 and 26, respectively, is disposed inside the gamma shields 22 and 23, while the lagging box 30 of the present invention is disposed beneath the gamma shield 24 to overlie the central test region 13.
Patent GB-460572-A (GB)
Title: Improved combination locks
IPC: E05B37/18
Filed: 1935-07-23
Abstract: 460,572. Combination locks. SIMONSEN & NIELSEN AKTIESELSKABET, and KETNER, L. P. G. July 23, 1935, No. 20956. [Class 44] In a combination lock comprising a number of locking members 3 adapted to be displaced by a number of adjustable units 9, a blocking device 8 is arranged to engage and block the units 9 when it is attempted to open the lock, irrespective of whether or not the adjustment of the units be correct for opening the lock. The members 3 are spring-mounted in a rail 1 provided with holes 2 through which the ends of the members pass. The rail 1 is enclosed by a second rail 4, and the two rails are adapted to slide vertically between two side plates 7 when a cam 18 operated by a key &c. 19 and engaging the top of the rail 4 is turned in the direction of the arrow 20 to depress the rails against spring action. This movement of the rails carries the blocking member 8 downwards by means of a spring 10 between the rail 4 and the member 8, so that its lower end enters a series of notches 16 in the units 9 and holds them in position. If the units 9 have been set so that the teeth 11 on their upper edges are aligned under the members 1, then further downward movement of the rails by the cam 18 causes the teeth to lift the members 1, thereby disengaging the rail 1 from rail 4. At the same time the cam 18 lifts a plate 22 so that its lower end 23 releases the lock bolt 24, which is then opened by a spring. During the lift of the plate 22 a cam surface 30 of a slot 29 engages a lug 31 on the rail 1 and moves the rail laterally with respect to rail 4. The opening movement of the bolt 24 releases a plate 26, which is moved laterally by a spring 27, and actuates a notched plate 15 to scatter the units 9. In the form shown in Fig. 8, the locking members are balls 3 projecting through holes 2 in the rails 1, 4, and adapted to be depressed by the teeth 11 on the units 9 when the rails are raised. The' blocking member consists of a number of bars 8 which block the units 9 by engaging the teeth 11 when they are moved up with the rails 1, 4. The units 9 are scattered by a plate 40 which is moved down by a cam 41 and moves the units by engaging the inclined surfaces 49.
Patent GB-823967-A (GB)
Title: Improvements in folding boxes
IPC: B65D5/36
Filed: 1957-07-05
Abstract: 823,967. Cartons. CLELAND Ltd., W. W. and BUCHMAN, A. A. July 5, 1957 [July 6, 1956], No. 21043/56. Class 18. A collapsible carton has flaps extending from the ends of two opposite side walls which are attached to the outer face of an adjacent wall, the flaps being creased diagonally to permit collapsing of the walls mentioned. In one embodiment, Fig. 1, flaps extending from side walls 2 comprise portions 9 and glued portions 11 separated by a diagonal crease line 10. With the walls 2 and rear wall 3 turned up at rightangles from base 1, the portions 11 are stuck to the outer face of the rear wall 3, the whole then being collapsible. By pulling up lid 6 the walls 2 and 3 are erected, and by folding inwardly flaps 13 and enclosing them within front wall portions 4, 5 which lock by tongue and slot connection 14,15 the carton is complete. In another form, Fig. 4, the side wall extension flaps comprise portions 25, 27 parted by crease line 26 and attached respectively to side walls 17 and rear wall 19 ; the portions 27 are glued to the outer face of the rear wall 19.