baber/WOPTO huggingface dataset:
Patent GB-1196461-A (GB)
Title: Improvements in or relating to Heat Exchanger Assemblies
Inventor: HARRIS PETER JOHN
IPC: F28B1/06
Filed: 1967-02-08
Abstract: 1,196,461. Air-cooled heat exchangers. GKN BIRWELCO Ltd. 31 Jan., 1968 [8 Feb., 1967], No. 6006/67. Heading F4S. A heat-exchange element, e.g. 14A, is connected by conduits to a sump 31 at least the upper part of which contains an inert gas such as nitrogen, the arrangement being such that when the element is to be drained of liquid, say under conditions of low ambient temperature, the element liquid passes into the sump via one conduit means 33, 32 and displaces some of the inert gas through another conduit means 53, 52 into the element, the reverse process taking place when the element is refilled with liquid on being brought back into service. Each element 14 shown is of inverted V-form and is one of a plurality of such elements arranged in groups A ... F at the base of a cooling tower 10. The element group F is not indicated but is arranged at the same level and opposite to element group E. The element group C is opposite and at the same level as element group A. The heat exchange assembly serves to cool hot condensate discharged from a power station 26, Fig. 4, through a duct 24, the cooled condensate being returned to the plant via a conduit 25. By-passing of the element groups A ... F by the cooling air is prevented by sealing plates 58, 60 located between the elements and the tower wall. Each element consists of horizontal tubes extending between a liquid inlet-outlet header 15 and a return header (20, Fig. 3), the headers 15, (20) being coupled to inlet and outlet manifolds 16, 17 (see also Fig. 2). These in turn are coupled via feeder pipes 27, 28 (see also Fig. 5) to main pipes 22, 23, which are connected into the main liquid supply and return ducts 24, 25. Cut-off valves (29, 30, Fig. 5) enable selected elements to be isolated from the circuit whereafter other valves (35, Fig. 5, and 36, Fig. 6) are opened to permit the element liquid to gravitate via pipes 33, 32 and spout 37 into the sump 31. When the element is refilled, the liquid is drawn from the sump 31 by pumps (41, Fig. 6) via spout 42 and flows through conduits 32, 33 to the element. If the whole system is to be drained at one time, an additional sump 45, Fig. 4, is brought into use. The sump 45 is disposed at a higher level than sump 31 so that water may drain by gravity from sump 45 into the sump 31. The latter sump may contain a float adapted to operate valves automatically to transfer excess water into the sump 45 when necessary. The sump 45 may be located inside the tower or, as shown, outside the tower where it may serve several adjacent towers.
Patent GB-688694-A (GB)
Title: Improvements in and relating to sack-holders
IPC: A01F12/50
Filed: 1950-03-10
Abstract: 688,694. Sackholders. LAVERICK, J. Jan. 1, 1951 [March 10, 1950], No. 6030/50. Class 58 A sack-holder comprises pairs of fixed and movable gripping jaws 6a, 10, the latter being connected respectively to the ends of a toggle 11, means being provided for " making" the toggle to close the jaws and for " breaking" the toggle to open the jaws and means associated with the toggle for latching it in the " jaws closed position, to resist any tendency of the sacks to pull the jaws open. As shown the sackholder is adapted for attachment to the inner and outer walls 1, 2 (Fig. 3) of a grain hopper of V-section, having an aperture 3 at the bottom of the outer wall, for the exit of the grain. A pair of vertical holding plates, 4, 5, each having its upper part deflected to lie against and be bolted to the respective wall of the hopper is provided, the plate 5 which is attached to the outer wall 2 being the longer, so as to lie opposite the grain aperture 3. Secured to the rear (shorter) plate 4 is the centre part of a metal strip 6 of flat U-shape, the extremities 6a of which pass through notches 5a cut out of the lower corners of the longer plate 5 and project beyond that plate, where they are each formed with a round aperture 7 and constitute the fixed jaws. The U-shaped strip 6 carries a series of spikes 8 at the rear, on which a part of the mouth of the sack may be impaled, Fig. 3. Pivotally mounted on the front plate 5, just above the said corner notches 5a, are levers 9, the lower and shorter ends of which carry laterally disposed pins 10 which con stitute the moving jaws, and in one position of the levers 9, enter the round apertures 7 in the fixed jaws. The upper and longer ends of these levers 9 are connected to the outer ends of toggle links 11, the inner ends of which are connected to each other and to a handle 12 which extends forwardly through a vertical slot 13 in a guide 14 attached to the plate 5, the upward movement of the handle bringing the toggle into (but not past) the straight position (see Fig. 4, not shown). Pivotally mounted on the guide 14, above the slot 13, is a latch member 15, of hook shape, adapted by its weight to fall below the handle 12 when it reaches the top position, and having an inclined face 15a to be met by the handle 12 as it is raised, so that the latch is displaced by the handle until the top position is reached. A stop 16 limits the falling movement of the latch, and the latch is flanged along the edge 15a to provide a finger grip. There may be only one slot to receive the handle 12 or, as shown, there may be two and more than two may be provided if dimensions permit.
Patent GB-124826-A (GB)
Title: Improvements in or relating to Fuzes for Projectiles.
Inventor: HOYLE JAMES ROSSITER
IPC: F42C15/22
Filed: 1916-04-27
Abstract: 124,826. Hoyle, J. R., and Strang, H. B. April 27, 1916. Projectile fuses.-Relates to sensitive directaction percussion fuses, and consists in the combination with a firing-needle slidably mounted in the fuse-body of two or more springs so connected to the needle by links that the needle is normally held in an inoperative position, but is driven inwards on impact and, after passing a dead-point, is impelled by the springs against a cap or detonator. In the construction shown in Fig. 5, the springs are disposed in radial chambers G and act through sliding plugs D<1> upon the links E, which are connected to the needle A. Two or more flat springs may be used, as shown, for example, in sectional plan in Fig. 2. In this case, each link E is associated with two springs C having adjacent free ends disposed within a sleeve D. Each pair of springs C may be replaced by a single flat spring. In another modification, longitudinally-arranged flat springs are used. The Provisional Specification describes also an arrangement comprising radially-disposed coiled springs acting directly on the needle, the outer ends of the springs being connected to the fusebody by ball-and-socket bearings.
Patent GB-216925-A (GB)
Title: Improvements in stands and spool boxes for kinematograph projectors
IPC: G03B21/32
Filed: 1923-03-02
Abstract: 216,925. Kamm, L. March 2, 1923. Stands. - A stand for rigidly supporting instruments and permitting their adjustment in one plane comprises two end standards or frames A, A<1> each provided with a jaw or cheek C, C' having a seating of circular section, a cylindrical casing D housed between the cheeks C, C<1> and having a flat top E or other supporting means, and means such as a tension rod B and nut B<1> for drawing the cheeks together so as to clamp the casing; the casing may constitute a spool housing, as shown, when the stand supports a kinematograph projector. The cheeks may be cast with the standards or may be separate and secured bv screws. One of the cheeks may have a pin F which engages a slot or depression in the casing D to limit the angular adjustment, and edge flanges or beadings may be formed respectively on the casing or cheeks. When the casing D constitutes a spool housing, runner bars e<2> may be provided to carry the lantern.
Patent GB-343751-A (GB)
Title: Sewing machine
IPC: D05B35/02
Filed: 1930-02-24
Abstract: 343,751. Sewing-machine s. GRUMAN, H. F., 3763, Forest Park Boulevard, St. Louis, Missouri, U.S.A. Feb. 24, 1930, No. 6126. [Class 112.] Multiple-needle machines; stitches and seams.-A sewing- machine for seaming fabrics has one stitchforming mechanism for joining the edges, another stitch-forming mechanism for coverstitching the joined edges and means for folding the edges downwardly before being joined. In the form shown in Fig. 1, the usual work-table, arm 2, and driving pulley 5 are provided. A support 10 carrying the various mechanisms is detachably mounted on the base 1 and secured by a feather and nuts. Feed by presser feet.-The support 10 carries a work-table 20 co-operating with a presser-foot 21 mounted on a shank 22 on the arm 2. The foot is held down by a spring 18 and raised by a lever 19. The foot is slotted to accommodate feed-fingers 23 connected to an arm 24 adjustable on a shank 25 sliding in a sleeve 27 operated by a fork engaging an eccer.tric on the shaft 6 of the head 2 for the up-and-down movements. An eccentric 369 on the shaft 6 operates a bell crank 365, 368 to impart the forward-andbackward movement. Chain-stitching; folding devices.-The edges of the material to be joined are fed through the folding device shown in Fig. 12 to bend them downwards ready for stitching. An eyed needle 43 passes horizontally through a hole in the guide 41. The needle is fixed to a head 44 on a bar 45 sliding in bearings in brackets 47 on the plate 10. The bar 45 has a head 48 connected by a link 49 to the eccentric strap 50 connected in turn by a link 51 with a bearing 52 on the base 1. The eccentric strap 50 embraces an eccentric 53 on the shaft 7 so that during the rotation of the shaft, the needle bar 45 will be reciprocated. The needle co-operates with a looper 56 adjustable on a carrier 59 operated by an eccentric 68. A take-up and loop-spreader 88 are provided also, so that the down-turned edges are joined by chain-stitching. After the fabric has been joined and trimmed it is over-seamed by two vertical needles 99, 100 co-operating with the looper 102 reciprocated by an eccentric on the shaft 7. The looper is also rocked to produce a zig-zag stitch. Trimming mechanism.-During the formation of the joining seam, the edges are trimmed by a stationary cutter 91 and moving cutter 92 operated by the cam 98 on the shaft 11.
Patent GB-1373683-A (GB)
Title: Pulse transmitter for triggering thyristors
IPC: H03K17/72
Filed: 1972-02-09
Abstract: 1373683 Commutating thyristors SIEMENS AG 9 Feb 1972 [4 March 1971] 6148/72 Heading H3T [Also in Division H1] A pulse transformer adapted to provide control pulses for a thyristor 3 has two independent screens 5 and 6 disposed between the primary and secondary windings 1, 1<SP>1</SP> and 2. To prevent reverse current reaching the control electrode of thyristor 3 on extinguishing it an auxiliary thryistor 9 may be connected as shown, its control electrode being connected to the control electrode of thyristor 3 through a diode 11 and limiter resistor 10. Thyristor 9 may be triggered by a separate pulse circuit or by the control pulse for thyristor 3.
Patent GB-1138451-A (GB)
Title: Device for protecting a surface against stains and corrosion
IPC: G02B27/00
Filed: 1966-02-11
Abstract: 1,138,451. Cleaning windows. COMPAGNIE FRANCAISE THOMSON-HOUSTON HOTCHKISS BRANDT. 11 Feb., 1966 [12 Feb., 1965; 2 June, 1965], No. 6246/66. Heading A4F. [Also in Division G2] A device for protecting a surface of a transparent body, for example the front surface of a camera objective or a transparent port, comprises a casing B which shrouds the said surface and has a perforated end wall in the form of a grid or lattice G, a supply of protective gas to the casing providing a pressure head so that an outflow of gas from the casing through the apertured wall is maintained. The device may be attached to the objective mount of a television camera for observing the surface and temperature of the contents of a furnace. The gas under pressure passes into the casing B through a tube T. A water jacket E cools the casing B and also protects the camera. The pressure within the casing B is such as to produce non- turbulent flow through the perforated wall and yet prevent the intrusion of corrosive and harmful matter.
Patent GB-525665-A (GB)
Title: Improvements in or relating to fuel injection apparatus for internal combustion engines
IPC: F02D1/00
Filed: 1939-02-25
Abstract: 525,665. Fuel-injection pumps. BOSCH GES., R. Feb. 25, 1939, No. 6257. Convention date, March 29, 1938. [Class 102 (i)] [Also in Group XXIX] A feed pump 2 delivers through a filter 40, having an overflow valve 7, to a cylinder 10 having a spring-loaded piston 11 connected to a coupling 42 which adjusts the phase between the fuel injection pump 1 and its driving shaft 43. Fuel passes through a groove 16 of varying section in the cylinder 10 or in an inserted sleeve to the suction chamber 19 of the fuel injection pump, which is fitted with an overflow valve 34 to maintain substantially constant pressure therein. The groove 16 may be of uniform section and the piston loaded by various springs. Upon alteration of the quantity delivered by the pump 1 the edges 33 on the pistons 24 cause an adjustment of the time of injection as determined by the coupling 42.
Patent GB-787841-A (GB)
Title: Treatment of ferrous metal surfaces and composition therefor
IPC: C23G1/02
Filed: 1954-03-03
Abstract: Scale is removed from ferrous surfaces by applying thereto a paste comprising a finely-divided inert mineral carrier and an aqueous solution containing at least one substance yielding in aqueous solution an oxidizing anion, the pH of the solution being less than 10, and subsequently removing the reacted paste.  Where the pH of the solution used is such that the oxidizing anion therein produces a partial pressure of oxygen greater than 1 atmosphere and also yields by reduction insoluble products which would otherwise render the ferrous surface passive, there is added to the paste an electrolyte in the form of a water-soluble salt or acid, the said salt or acid having a dissociation constant greater than 0.01, being reactive towards iron (iron electrode potential in its aqueous solution less than 0) and having an rH value of 27-41 and if the acid used is one having a pH less than 2.5, then the acid being diluted so that not more than 1 per cent by weight of such acid is present in the paste. Where the pH of the solution used is such that the oxidizing anion therein produces a partial pressure of oxygen less than 1 atmosphere, there is added to the paste an electrolyte in the form of a non-reducing mineral acid having a pH less than 2.5, preferably sulphuric acid.  The mineral carrier is preferably silica or an insoluble silicate, e.g. clay, kaolin, talc, bentonite, or ground shells.  The preferred oxidizing anions are those which change colour when reduced and which are salts of potassium, sodium or ammonium. In suitable pH ranges the anions MnO4, ClO, ClO4 and Cr2O7 produce a partial pressure of oxygen greater than 1 atmosphere: examples of water-soluble salts and acids which are added when such anions produce insoluble products are sulphates, acetates and pyrophosphates of alkali metals and ammonium, acetic acid, nitrous acid and sulphuric acid.  In suitable pH ranges the anions CrO4, Cr2O7 NO3, NO2, ClO3 and ClO4 produce a partial pressure of oxygen less than 1 atmosphere.  Paste compositions given in the examples comprise (1) bentonite, potassium permanganate and ammonium sulphate, (2) bentonite, kaolin, potassium permanganate, acetic acid and sodium acetate, (3) bentonite, silica, sodium hypochlorite and ammonium bisulphate, (4) bentonite, sodium dichromate, and sulphuric acid, and (5) bentonite, kaolin, potassium permanganate and sulphuric acid.
Patent GB-1255707-A (GB)
Title: An improved ballistic assembly
IPC: F42B30/04
Filed: 1969-02-05
Abstract: 1,255,707. Ballistic assembly; weapon. ARAMA S.A. 5 Feb., 1969 [8 Feb., 1968], No. 6305/69. Headings F3A and F3C. A ballistic assembly comprises a projectile and a launcher, the projectile including a metal tube 2 containing an explosive charge 4 and an electric ignition capsule 9 mounted in a recess of a metal piston 5 force fitted in the tube, and the launcher including a metal guide rod 13 which bears against the piston, the capsule 9 being in electrical connection with a contact 7 in the piston, and the guide rod providing an electrical connection with the contact, whereby current can be supplied from an external source 25 to the ignition capsule. Upon igniting the charge 4, the piston is held stationary by the rod 13 and the projectile moves relative to the piston under the influence of the expanding gases derived from the charge. The head 13a of the rod 13 can be screwed into a support or into the muzzle of a weapon.
Patent GB-230492-A (GB)
Title: Improvements in and relating to electric discharge vessels, tubes or the like
IPC: H01J1/14
Filed: 1925-03-09
Abstract: 230,492. Huth Ges. f³r Funkentelegraphie, Dr. E. F. March 8, 1924, [Convention date]. Vacuum tubes. - A thermionic cathode and electrodes producing a secondary emission of electrons are made of a mixture or an alloy of molybdenum and thorium which is capable of emitting electrons without the employment of any heat treatment for rendering it active; or an electrode of molybdenum is mounted in a bulb and heated for a short time before or after being coated with thorium nitrate, no reducing or binding agent being employed. Specification 230,226 is referred to.
Patent GB-976209-A (GB)
Title: Power operator for doors and the like
IPC: E05F15/56
Filed: 1963-02-18
Abstract: 976,209. Door and window operating appliances. STANLEY WORKS. Feb. 18, 1963 [Feb. 20, 1962], No. 6441/63. Heading E2M. A device for operating a closure member such as a door 12 slidable along a track 14 comprises an elongated collapsible conduit 18, means for selectively connecting one end of the conduit to a fluid pressure source and the other end to exhaust, and a closure actuator 40 secured to the closure member and having means such as rollers 62, 64 for clamping the conduit, whereby the actuator is moved along the conduit in response to a pressure differential therein. The actuator comprises a U-shaped bracket 46 secured by means of its lower limb 60 to a mounting bracket 42 so as to be adjustable towards and away from the door 12, the roller 62 being mounted in suitable bearings between the limbs 60 and the roller 64 being mounted between a pair of levers 66, 68 pivoted to the limbs at 70 and biased towards the roller 62 by springs 74. U-shaped guide members 76 for the conduit 18 are provided on the actuator. The ends of the conduit are attached to respective control units 20, 21 each of which includes an electromagnetically operated valve 22, 23 (Fig. 4) having a non-energized position connecting the conduit to exhaust and an energized position in which the conduit is supplied with compressed air from a pipe 29. A filter 30 and pressure regulator 34 are provided. The door is opened by closing a switch 130 which energizes the valve 22 and brings into operation a holding relay 138 for the valve solenoid 134. When the door reaches its open position it opens a limit switch 144 having normally closed contacts 145, thereby de-energizing the valve 22. Closing of the door is effected similarly by closing switch 132 to energize valve 23, the movement being arrested by a limit switch 142. Each control unit 20, 21 carries a shock absorber 90 adapted to bring the door gently to rest and comprising a damping piston 98 movable in a cylinder 92. The piston rod 100 is urged outwardly by a spring 116 and carries a rubber button 102 adapted to engage the side wall 52 of the mounting bracket 42 of the actuator. As the door approaches the end of its movement it drives the piston rod into the cylinder, the damping effect being controlled by adjustment of the valves 108, 110 through which air escapes from the cylinder. The piston rod carries a tubular rod 126 telescopically mounted on a guide rod 127, the end of the rod 126 being adapted to actuate the limit switch 142 or 144. In a modification (Fig. 8, not shown) the switch-actuating rod is not attached to the piston rod. An alternative control circuit is described (Fig. 9, not shown) which closes the door automatically when the fully open position is reached, time delay means being incorporated if desired. The switches 130, 132 may be of any desired type such as hand switches, mat switches or photo-electric cells. Screws 27 are provided in the couplings 24, 25 at either end of the conduit to restrict the flow and thereby vary the speed of operation.
Patent GB-270046-A (GB)
Title: An improved continuous method of cooking cheese and a machine for use therein
IPC: A23C19/08
Filed: 1926-03-08
Abstract: 270,046. Doering, C., and Doering, H. R. March 8, 1926. Cheese, after being finely divided, is cooked by direct introduction of steam therein and simultaneously stirred, excess moisture is withdrawn, and the mass is then passed in a continuous stream into a vessel fitted with an agitator. Fed to a hopper 16. the cheese is pressed forward and broken up by a pair of parallel worms 18 in a chamber 15, and it then passes on through holes 27<1> and perforated plates 23, 24, 27 to a cooking and stirring worm and chamber 29, 28 leading to a heated .blender chamber 43 and finally to an agitatorfitted hopper 48. One of each of the sets of plates 23, 24 is rotatably adjustable for regulating the size of the openings through which the cheese is to pass, and the plates 27 are slidable longitudinally for the same purpose. A paddle 25 causes the cheese threads to discharge through the spider frame 26 into the cooking chamber. The thread portion of the worm 29 is heated by superheated steam introduced by a pipe 32 and passages 34, 36, 35, 31, and steam, preferably superheated, is passed directly into the chamber through spaced valve connections 39 and openings 40. A chemical mixer 41 communicates with the cooker by a conduit 41b, and vegetable oils or butter fats and colouring matter or vegetable juices from a vessel 58 are added to the cheese mass through a funnel-shaped inlet 59. A flue 57 provided with an exhaust fan and preferably also with a dampex withdraws the steam from the cooking chamber. To facilitate the removal of any solid foreign matter the discharge end of the chamber 15 may be enlarged as at 60 to form a pocket normally closed by a. slidably removable perforated plate 61. The treated cheese may be aerated, as by oxygen or carbonic acid gas introduced into the hopper 48 by a connection 62. The chamber 43 is fitted with a steam or hot-water jacket 49. The apparatus may be driven by a motor as at 21.
Patent GB-1208928-A (GB)
Title: Rotating space heating fan
Inventor: WYNN EDWARD DONALD
IPC: F04D29/38
Filed: 1968-05-25
Abstract: 1,208,928. Ventilating fans. E. D. WYNN. 20 May, 1969 [25 May, 1968; 7 June, 1968; 7 Feb., 1969], Nos. 25127/68, 27130/68 and 6619/69. Heading F4V. [Also in Divisions F1 and H5] A slow speed fan, with its blades mounted horizontally, has electric heating means incorporated therein. An electric motor 3 drives the blades 6 at speeds in the range of thirty to seventy R.P.M. the blades being made of two sheet metal blanks of aluminium alloy with the edges of one blank turned over the other blank. The heating element in each blade may comprise a flat sheet of mica with electrical resistance wire wound thereon or may comprise a sheet of electrical insulating material with electrical resistance material applied thereto. In each case the element is enclosed between the sheet metal blanks. A switch enables the heaters to be switched off and the fan to supply ambient air, a red light 13 indicating when the heaters are on. A safety switch turns off the heaters if the fan stops rotating to prevent overheating.