baber/WOPTO huggingface dataset:
Patent GB-942005-A (GB)
Title: Improvements to vapour generating equipment
Inventor: CULVER LEONARD JAMES
IPC: F22G5/04
Filed: 1961-01-27
Abstract: 942,005. Water-tube steam boilers; superheaters. FOSTER WHEELER Ltd. Jan. 24, 1962 [Jan.27, 1961], No. 3322/61. Heading F4A. In a water tube boiler having a superheater section arranged on the flue side of the steam generating tubes, a by-pass around that superheater section, an economizer section in the bypass and means for proportioning the furnace gas flow between the by-pass and superheater, a water connection is provided from the boiler water circuit to the economizer section so that a natural circulation flow of water through the same is ensured even when the feed water supply ceases. In the form shown a steam drum 10 is connected to a water drum 12 by generating tubes 14 heated by gases generated in a furnace 16. A superheater 18 is disposed in a duct 19 at the upper end of which are dampers 26 to control the flow of gases therethrough. A superheater by-pass duct 23 is provided with an economizer section 22 and dampers 28 to control the flow of gases therethrough. The economizer section 22 is connected in series with further economizer sections 30 situated in the common outlet flue 29 and serves to protect these sections from overheating when the flue gases are diverted through the duct 23. A supply of water is maintained to the economizer 22 by natural circulation, even in the event of the feed water being cut off, by connecting the economizer to the boiler water circuit as shown by a supply line 32 connecting the economizer 22 with the water drum 12, this line being provided with a valve 34.
Patent GB-639129-A (GB)
Title: A new or improved temporary roof support particularly for use in mines
IPC: E21D15/24
Filed: 1947-02-04
Abstract: 639,129. Temporary roof supports. RIDGILL, E., and PEARCE, R. Feb. 4, 1947, No. 3350. [Class 20 (ii)] [Also in Group XXX] A temporary roof support, e.g. a pit prop, of the telescopic type comprising a tubular body 1, Fig. 1, and a screw-threaded extension member 2 operated by means of a nut 4 engaging the screw-thread and bearing on the body 1, has an elongated key bar 5, Fig. 6, welded at its ends and intermediate its ends in holes 6, 7 in the body 1 and slidably engaging in a keyway 10, Fig. 9, formed in a disc 9 provided on the extension member 2 at or near its inner end. The nut 4, Fig. 2, bears against a brass washer 11 and is held by clips 15 welded to the body 1 and engaging in a groove 13, the clips also engaging notches in the washer 11 to prevent its rotation. The nut 4 has a lateral offset boss which receives a sliding bar operating handle 18. Two key bars with corresponding keyways in the disc 9 at opposite sides of the roof support may be provided. A handle may be provided on the body portion and the threads on the nut and extension member may be of Acme form and may have two starts. Specification 7851 /11, [Class 78 (iii)], is referred to.
Patent GB-342524-A (GB)
Title: Improved process for the production of ammonium sulphate
IPC: C01C1/247
Filed: 1930-01-31
Abstract: <PICT:0342524/III/1> Ammonium sulphate is obtained by the reaction of ammonia and sulphur dioxide in the gaseous phase, with or without diluents, in the presence of such a limited amount of water vapour that the reaction product is substantially a dry powder, and during and/or after the reaction exposing the reactants or the product to an atmosphere containing free oxygen and nitric oxide or other higher oxide of nitrogen.  The amount of nitrogen oxides may be small, say up to 2 per cent of the ammonia present and the reaction may be effected using small partial pressures of ammonia and sulphur dioxide, e.g. up to 5-10 milliatmospheres.  The temperature should preferably be maintained between 20 and 50 DEG  C., if necessary by the provision of cooling tubes in the reaction chamber.  In the illustrated modification, ammonia and sulphurous gases are admitted at entrances C, D of a reaction chamber A which may be constructed of austenitic nickel chrome steel, and their mixing may be promoted by propellers near the inlets.  Water vapour may be introduced as atomized water or steam but preferably by saturating one of the incoming gases.  Nitrogen oxide and oxygen containing gas enters at E and passes in counter current to the solid reaction product which is caused to descend a series of trays in a collecting vessel F by the rotatory movement of a scraper.  The residual gases pass out through an electrical precipitation B and their content of oxides of nitrogen may be recovered by washing with alkalies or ferrous sulphate.  The oxidized product may be freed from traces of acid by treatment with gaseous ammonia.
Patent GB-644475-A (GB)
Title: Improvements in addressing and like printing machines
IPC: B41L47/18
Filed: 1948-02-05
Abstract: 644,475. Printing-machines. ADREMA, Ltd., and SANDERSON, T. E. F. Feb. 5, 1948, No. 3415. [Class 100 (ii)] Addressing and like machines.-An addressing or like printing machine has below the level of its table a horizontal hopper in which a stack of plates to be printed from can be placed, each vertically disposed, and feeding means for operating successively on each plate to turn it into a horizontal position and advance it along a horizontal track to the printing position. The plates 4, Fig. 1, having index tabs 16, are urged to the rear of the hopper 5, against a bracket 24 sliding friction tight on a rail 25 and adapted to pass into a recess 26 in a frame member 11, by an arm 22. The arm 22 is supported on a carriage 20 slidable on a counterslide 21 and moved rearwardly by means of a tooth 19 engaging a rack 17 reciprocated from an oscillating point in the machine drive through a yielding connection 18. A lever 23 can be raised to disengage the tooth 19 and allow free movement of the carriage 20. The feeding means comprises bars 27, Fig. 3, extending below the plates along the track 13 and secured to a plate 28 sliding in a groove in the plate 11 and passing behind the rearmost plate in the hopper. The plate 28 has a pawl 29 to feed said plate into a transfer chamber 7, while the preceding plate, horizontal in the chamber is fed by a pawl 30 into the track 13, pushing along the plates 4a already there. For feeding to printing position the last plates of the batch, the bars 27 carry further pawls, as 41. When a plate enters the chamber 7 it is vertically disposed with its upper part engaged by spring plates 8, 9. An arm 10 pivoted on the member 11 has a curved portion 12 passing through an opening in the member 11 and is urged forward by a torsion spring 34 to turn the plate into a horizontal position level with the track 13. The plate 28 has secured to it a wedge member 33 sliding in a deeper groove 31 in the plate 11, and also sliding in the groove 31 is a latching bar 39 biassed to the right by a spring engaging a flange 40. The arm 10 is held in rearward position by a pin 35 engaging a cam surface on the head 36 of a vertical rod 37 sliding in a bore in the member 11 and secured to a horizontal rod 38 lying in a vertically elongated slot in the member 11. When the plate 28 slides to the left, the member 33 sticks in front of the bar 39 and engages the flange 40 to move the bar to the left and release the rod 38, whereupon the arm 10 moves forwards. On the return movement, the wedge member 33 raises the rod 38 and the bar 39 moves under it to hold the rod in its upper position.
Patent GB-450819-A (GB)
Title: Nozzle construction
IPC: B05B3/04
Filed: 1936-02-05
Abstract: 450,819. Nozzles. AKRON BRASS MANUFACTURING CO., Inc., Wooster, Ohio, U.S.A. Feb. 5, 1936, No. 3448. Convention date, Feb. 11, 1935. [Class 69 (iii)] A nozzle more particularly for fire extinguishing which will discharge either a diffused cloud of spray or a jet or a combination of both comprises a body portion 11 to which is attached a domeshaped nozzle 20, having a flared exit orifice, within which is mounted a rotor 35 and also a central jet 33. The body 11 is provided with a central passage 26 and also passages 43 leading to inclined ports which direct liquid against vanes 37 on the lower side of the rotor. Inclined passages 38 in the rotor throw water into a whirl chamber 21 within the nozzle 2 whence it emerges through the flared outlet 22 as a diffused spray. A cock 27 within the body 11 has ports by which liquid may be directed to either the central jet 26, the ports 43, or both or may entirely cut off the water supply. British Specification 441,153 and U.S.A. Specification 1,996,884 are referred.
Patent GB-546501-A (GB)
Title: An improved coupling for connecting tubular scaffold poles or other tubular bodies
IPC: E04G7/20
Filed: 1941-03-13
Abstract: 546,501. Joints for scaffold poles. MARSHALL, A. C. March 13, 1941, No. 3449. [Class 20 (ii)] A coupling for joining tubular scaffold poles together end to end comprises two members 1 adapted tc enter the ends of adjacent poles and each having a projection or half collar 2 mtermediate of its length the collars on opposec members being slidably secured together by slottec plates 4 and headed projections 6. One of the collars is bored to receive a bolt 8 the end of whict bears on the inner face of the opposed collar whereby the members are expanded into the poles, the ends of which abut against the collars. The slotted plates may be rigidly secured tc one of the members and have a sliding fit over projections on the other member.
Patent GB-534438-A (GB)
Title: Looper-mechanism for sewing machines
IPC: D05B57/02
Filed: 1940-02-24
Abstract: 534,438. Sewing-machines. SINGER MANUFACTURING CO. Feb. 24, 1940, No. 3486. Convention date, April 21, 1939. [Class 112] A chain-stitch looper, or other thread handling device, 24 is carried on the end of a shaft 20 which is oscillated by means of a yoke 21 and an eccentric on a parallel shaft 14. The shaft 20 is mounted eccentrically within a shaft 18 which is continuously rotated by gears from shaft 14. The curve 32 is the resulting path of the looper tip. The looper beak enters the needle loop in a nearly normal attitude and in the return movement, owing to the upward shift of the shaft 20, the beak is substantially oblique to the needle.
Patent GB-890889-A (GB)
Title: Improvements relating to display equipment
IPC: A47F5/08
Filed: 1959-02-02
Abstract: 890,889. Brackets. CADWALLADER, F. J. Jan. 26, 1960 [Feb. 2, 1959],. No. 3563/59. Class 52(5) [Also in Group XXV] A bracket for use in conjunction with display equipment comprises a display fitting supporting portion in the form of a flat plate 10 and a screw actuated open sided clamp 11 which is connected to the plate 10 along one edge thereof so that when viewed at right angles to the axial direction of the clamp the plate extends, in an axial direction with respect to the clamp, on one side of the clamp only, the plate 10 being formed with at least two spaced apertures 14 which are adapted to receive the free ends of a pair of tines 16. The apertures 14 may be screwthreaded internally or they may be of plain configuration. A fitting 15 (Fig. 3) has a pair of tines 16 the cranked ends 18 of which are received in the apertures 14 of the plate 10. The fitting 15 may carry a shoe supporting cradle 17. A further fitting 19 may be supported by the plate 10. In a modification shown in Fig. 6 the plate 10 is provided with an internally threaded sleeve 20 which is adapted to receive a screwed rod 21.
Patent GB-493187-A (GB)
Title: Improvements in or relating to hair curlers
IPC: A45D2/24
Filed: 1938-02-04
Abstract: 493,187. Hair - curlers. SOLOMON, N. L. Feb. 4, 1938, No. 3596. Convention date, Nov. 30, 1937. [Class 131] In a hair-curler comprising two clamping members 11, 12 pivoted together, the hollow tubular member 11 is formed with a reduced portion 14 and a shoulder 13 which limits the closing movement of the member 12 so that gaps 25 are left to receive the hair and facilitate its removal.
Patent GB-1293012-A (GB)
Title: Electronically tuned oscillator in an am radio receiver
Inventor: GONCHAROFF NIKOLAI
IPC: H03J3/02
Filed: 1970-01-26
Abstract: 1293012 Receiver tuning; transistor oscillators MOTOROLA Inc 26 Jan 1970 [11 Feb 1969] 3616/70 Headings H3Q and H3T In an electronically tuned radio receiver an oscillator circuit 27 includes a tank circuit 70 with a voltage variable capacitor 71 connected in the base-emitter circuit of a transistor 80, a circuit 50 for supplying a tuning voltage to the voltage variable capacitor 71, a constant D.C. load 90 connected to the collector of the transistor 80 and a circuit 93, 101 isolating and amplifying the output from the transistor to the receiver. A stabilized tuning voltage is obtained from Zener diodes 52, 55, potentiometer 58 and an RC filter 62, 63 for feeding via 47 varactor or hyper-abrupt diodes 14, 20, 71. Capacitors 75, 76 may be required to provide additional distributed capacitance. The A.C. signals across the varicap diode 71 tend to be rectified so as to detune the circuit 70 and these A.C. signals should be limited by providing the inductor 74 with taps 88, 89 which are coupled to the transistor 80 via capacitors 85 and 87 and since the base current of transistor 80 is substantially lower than if the resonant circuit were in the collector circuit. The tuning range of tuned circuit 70 tends to be limited by the base circuit capacitance of transistor 80 connected in parallel with diode 71. This circuit capacitance reflected from the transistor 80 is reduced by the use of the tapped inductor 74 and capacitors 85, 87 and since the output is taken only across part 89. A constant D.C. load in the form of a resistor 90 is used so as not to cause fluctuations in the D.C. signals, reflected by transistor 80, across the diode 71. The low level oscillator signal from 89 is amplified by transistors 93, 101 which in addition isolate the oscillator 27 from the mixer 33 in order to prevent pulling of the oscillator signal by coupling back D.C. signals from the mixer 33 to the tank circuit 70 due to strong received signals. A silicon diode 60 provides temperature compensation for variation due to the diodes 14 and 20. Remote tuning of an automobile receiver from the arm rests on the doors of the front and rear seats of an automobile is described.
Patent GB-607480-A (GB)
Title: Improvements in or relating to bodies for lorries and like vehicles
IPC: B60P1/26
Filed: 1946-02-05
Abstract: 607,480. Automatic fastenings. LAING & SON, Ltd., J., and PAXTON, J. M. Feb. 5, 1946, No. 3661. [Class 44] [Also in Group XXXII] A tipping vehicle tailboard B, pivoted at B<1>, is held closed by a latch F connected by rod G to a bell-crank lever H, K, the free end of which rests on a block L carried by the chassis D, forward of the body-tipping pivot E. In the lowered position of the body, the latch F is held closed by contact of the arm K with the block L. In the raised position of the body, arm K is not restrained by block L and the spring G<1> moves the latch F to open position.
Patent GB-1022269-A (GB)
Title: Improvements in or relating to oil circulating devices in sewing machines
IPC: D05B71/00
Filed: 1964-01-29
Abstract: 1,022,269. Reciprocating pumps. NECCHI S. p. A. Jan. 29, 1964 [April 5, 1963], No. 3799/64. Heading F1A. An oil circulating pump for a sewing machine comprises a plunger 24 which reciprocates and oscillates about its own axis in a cylinder 29. The end of the plunger has a cut-away portion 26 which alternately opens and closes the ports 36, 37 as it oscillates. The pump draws lubricant from a reservoir in the base of the sewing machine and a cooler is provided in the return line to the reservoir (Fig. 6, not shown). A shaft 9 carries an eccentric 8 whose rotation imparts an oscillatory and rotary movement to the plunger 24 and to hooks 3, 3<SP>1</SP> via crank mechanisms 13, 15, 17 and 14, 16, 18.
Patent GB-759758-A (GB)
Title: A telephone system with a main exchange and a satellite exchange
IPC: H04Q3/58
Filed: 1953-02-11
Abstract: 759,758. Automatic exchange systems. LICENTIA PATENT - VERWALTUNGS - GES. Feb. 11, 1953 [Feb. 11, 1952], No. 3848/53. Addition to 759,656. Class 40 (4). In a modification of the automatic satellite (non-exchange) described in the parent Specification, in order to eliminate clicking noises when earth is applied to the wire b during the testing of a busy subscriber's line by a relay selector functioning as a line-finder, a rectifier G is inserted in the wire b on the subscriber's side of the point X where earth is applied and in the earth connection a fixed resistance W is inserted such that, for any subscriber's line connectable to the junctions, the potential of the point X during testing is insufficient to make the rectifier conductive. When the connection is extended to the exchange the rectifier G passes the line current until it is short-circuited by the supervisory relay F.
Patent GB-552834-A (GB)
Title: Improvements relating to tilting mechanisms for bessemer and like converters
IPC: C21C5/50
Filed: 1942-03-24
Abstract: 552,834. Hydraulic apparatus. STEWARTS & LLOYDS, Ltd., and HENDRY, D. C. March 24, 1942, Nos. 3900 and 11181. [Classes 69 (ii) and 135] Tilting mechanism for a Bessemer or like converter a comprises a servomotor responsive to the control of the attendant, a main valve assembly h for controlling the supply of fluid to the cylinder b, of a hydraulic motor which actuates the converter by means of a rack e and pinion j, and valve-actuating means, responsive to movements of the servomotor and the converter, prevent excess tilting movement. The valve assembly h comprises valves j, k for controlling the flow of fluid delivered by a pump to a pressure pipe m and returned to a tank 25 by an outlet pipe o. The valves j, k are controlled by a lever 12 connected by a link 18 to a lever 19 which is connected by a rod 21 to a travelling nut 22 operated from the tilting motion of the converter. The lever 19 is connected by a link 20 to a crosshead x on a plunger v of the servomotor. The servomotor s is formed of a plunger v integral with a smaller plunger w arranged in cylinders t, u of which the smaller cylinder is connected permanently to the pressure pipe m and the large cylinder can be connected by valves 2, 3 to the pressure or exhaust pipe respectively, the valves 2, 3 being under the control of levers 16, link 15, and a lever 14. The lever 14 is controlled by a link 13 connected to a lever 8 pivoted to the crosshead x and connected by a link 9 to the main hand-lever control 10 which is shown in the central position corresponding to the vertical position of the converter a. To tilt the converter in a forward direction, the lever 10 is moved to the left and held in position by a pawl. The lever 8 moves counterclockwise to the position 8a causing similar movement of the lever 14, opening of valve 3 to connect cylinder t to exhaust thereby causing movement of the plunger v, w to the left and clockwise movement of levers 19, 17 and operation of valves j, k to connect pipe p to pressure pipe m and pipe n to exhaust thus causing movement of piston c and tilting of the converter. The consequent movement of the nut 22 causes lever 19 to move to a position 19b and this causes the lever 17 to be returned to a position in which the valves j, k are closed and the movement of piston c ceases. If however the piston continues to move, owing to leakage, further movement of nut 22 causes reversal of the fluid supply to the motor thus preventing excess movement of the converter. The valve chest i is fitted with valve o operated bv lever mechanism from a lever r to regulate the rate of flow of fluid to the cylinder b. As a further safeguard to nrevent excess motion of the converter the supply of fluid to the converter motor mav be cut off automatically by an additional valve operated bv lever mechanism operated bv a tannet on the rack e or by a cam on the shaft of the converter.
Patent GB-1345479-A (GB)
Title: Preparation of 2,6-dimethyl naphthalene
IPC: C07C15/24
Filed: 1972-01-27
Abstract: 1345479 2,6-Dimethylnaphthalene TEIJIN Ltd 27 Jan 1972 [27 Jan 1971] 3965/72 Heading C5E In a process for preparing 2,6-dimethylnaphthalene (DMN) by isomerizing 1,5- and/or 1,6-DMN, crystallizing and separating 2,6- DMN product and recycling the mother liquor to the isomerization, the isomerization product is treated to remove 2,7-DMN and/or a eutectic mixture thereof before the mother liquor is recycled to the isomerization. The 2,7-DMN may be crystallized and together with the 2,6- DMN, and the cystallized product treated with an organic solvent which dissolves 2,7-DMN in preference to 2,6-DMN; the 2,7-DMN is then crystallized from the mother liquor remaining after separation of 2,6-DMN, the solvent removed and the residue recycled to the isomerization. Alternatively the 2,7-DMN may be crystallized out from the mother liquor remaining after a first crystallization step to remove 2,6-DMN. Mono- and tri-methylnaphthalenes may be distilled from the mother liquor before recycle. The isomerization may be carried out in the gas phase at 260-400‹ C. using SiO 4 -Al 2 O 3  or a zeolite catalyst or in the liquid phase at -30 to 50‹ C. with BF 3  or AlCl 3  catalyst. Suitable organic solvents for dissolving 2,7-DMN are C 1 -C 2  alcohols, C 4 -C 8  alkanes cyclopentane, cyclohexane, benzene, toluene, xylene, acetone, methyl ethylketone, diethylether and/or diisopropylether.
Patent GB-1377643-A (GB)
Title: Winding of continuous webs on to reels
IPC: B65H19/22
Filed: 1971-02-05
Abstract: 1377643 Changing web rolls MASSON SCOTT THRISSELL ENG Ltd 4 Feb 1972 [5 Feb 1971] 4044/71 Heading B8R In a method of and apparatus for changing a web roll in a winding operation, a completed reel 4 is moved away from a rider roller 9, which remains stationary in position, to draw out a length of web W, a guide roller 11 is moved into the path of this length of web to engage the web on the side which will be outwards on the new reel, the rider roller 11 is moved further away from the completed reel, a new reel core 5 is then moved into the path in close proximity to the guide roller to cause the web to envelop the greater part of the core circumference and a knife and transfer mechanism 12 is actuated to cut the web between the core and guide roller and transfer the cut leading end to the new core. The completed reel and new reel core may be mounted on pivotable arms 3 of a reel stand 1 whilst the rider and guide rollers are mounted on pivotable arms 7, 8 actuated by pneumatic cylinders 10, 13. The arms 3 are rotated through 130 degrees to draw out the length of web whilst the new reel core is rotated at the linear speed of the web. The arms 8 then advance the guide roller to the web and the arms 7 retract the rider roller. Next the arms 3 rotate through a further 50 degrees to bring the new reel core into contact with the web, the rider roller then being moved to a position resting on the new reel core. Finally, pneumatic cylinders 16, 22 are actuated to bring the knife and a transfer brush mechanism, and a back-up bar 20 respectively, together to sever the web, for instance as described and claimed in Specification 1,377,644. The whole operation is initiated manually and is controlled by electrical and pneumatic circuits including limit switches operated by cams on the axle of the arms 3.
Patent GB-1074696-A (GB)
Title: Movable bench for machine tool
IPC: B23Q3/154
Filed: 1966-01-31
Abstract: 1,074,696. Work-tables. J. A. C. VAN STRAATEN. Jan. 31, 1966 [Feb. 2, 1965], No. 4157/66. Heading B3B. [Also in Divisions F2 and H1] A work-table assembly for drilling and milling machines comprises a work-holding plate movable on a cushion of air on a base, the cushion being supplied by air jets and the plate being held fast by permanent magnets 15 when the air supply is terminated. Air is controlled by a pedal. The base of the plate is rubber-covered and may have protrusions of P.T.F.E. In a modification, the base has a rib (17), Fig. 6 (not shown), to guide the plate and movement is limited by screws (19).