baber/WOPTO huggingface dataset:
Patent GB-1410656-A (GB)
Title: Mould assembly for injection moulding apparatus
IPC: B29C45/37
Filed: 1972-09-20
Abstract: 1410656 Injection moulding apparatus CHICAGO RAWHIDE MFG CO 20 Sept 1972 [20 Sept 1971] 43601/72 Heading B5A An injection mould, e.g. for making oil seals S of rubber comprises relatively movable mould parts 24, 60 defining a mould cavity 40 having an inlet port 32, and a disc-shaped transfer passage 96 extending radially from the inlet port towards the mould cavity for communication with the cavity about its entire inner periphery via an annular tear trim passage 110, this passage serving to provide, after moulding, a tear trim area of cured material whereby the moulded article may be separated from the material cured in the transfer passage 96, the distance between opposed faces of the mould parts at the radially inner portion of the transfer passage being substantially the same as the distance between opposed faces of the mould parts defining the tear trim passage. As shown in Fig. 3, the transfer passage 96 may be frustoconical in shape and is fed from an injection nozzle 94 through the port 32. The passage 96 is preferably tapered in such a way (Fig. 10, not shown) as to produce a constant low radial velocity of the injected material to reduce viscous heating. The seal S is bonded to a metal stamping 44 (Fig. 6) inserted into the mould. A shoulder portion 70 of mould part 60 overlies an annular groove which is connected through a passage 74 with a vacuum source 76. Towards the end of the injection step the pressure of injected material pushes the mould part 60 downwardly against a spring 52 so that the groove 72 becomes almost closed. As shown in Fig. 7, the peripheral portion of the mould part 60 includes a plurality of flat surfaces 120 extending between arcuate portions 122. The flat surfaces 120 thus provide a number of enlarged passages through which the bulk of the injected material will flow. Only a minimal flow takes place in the area of the arcuate portions 122 but these assist in accurately locating the mould parts 24, 60. A spring-biased stripper plate 26 bears on the metal stamping 44 and assists in ensuring that the finished seal moves downwardly with the mould part 60. In a modification (Fig. 9, not shown) the tear trim area (134) extends radially instead of axially as in Figs. 3, 6.
Patent GB-1387229-A (GB)
Title: Slurry hopper system
IPC: B65G53/30
Filed: 1973-09-18
Abstract: 1387229 Mixing tank CONTINENTAL OIL CO 18 Sept 1973 [16 Oct 1972] 43733/73 Heading B1C A slurry mixing and feed tank assembly for forming a slurry e.g. of coal and water, and supplying the slurry to a slurry pump comprises an open topped tank 14a whose horizontal dimensions are greater than the vertical, the tank having a bottom 312 which slopes downwardly to an outlet 307 in one end wall 303, means respectively for feeding granular solids and water into the tank adjacent the higher end of the bottom, means 15, 16, 17 for maintaining a predetermined level of water in the tank. and baffles 304 in the upper portion of the tank to minimise turbulence. Coal from a crusher in a mining installation is deposited in the open top of the tank by a conveyor 45 and water is fed into the tank through slots 306 from a manifold 305.
Patent GB-973861-A (GB)
Title: Improved fluid pressure servo control valve and system incorporating the same
Inventor: LAWS ARTHUR ERNEST
IPC: F15B13/06
Filed: 1959-12-24
Abstract: 973,861. Valves. A. E. LAWS. Nov. 7, 1960 [Dec. 24, 1959], No. 43811/59. Heading F2V. [Also in Division G3] A fluid pressure servo control valve comprises a casing including a pair of parallel plates 12, 14 having at least two working ports 31, 32, 33, 34 opening each through one or other of the faces of the plates, a valve member slidable between the faces and shaped to define the outer boundary of an inner space and the inner boundary of an outer space whereby upon relative movement from a datum position in any given direction communication between at least one of the ports and one of the inner and the outer spaces is increased while for a relatively opposite movement of the ring member the communication between that port or ports and the other of the inner and outer spaces is increased. In operation, when the control member is moved in a direction A, say to the left as shown, compressed air is fed via passages 22, 24 into the port 31 to act on one side a servo piston 40, the air on the other side being exhausted through port 32 to atmosphere. The carriage may also, simultaneously, be moved in a direction B, say upwardly as shown, in order to admit air through port 34 and act on one side of a second servo-piston 42, the air on the other side being exhausted through the port 33. The piston rods are connected to the controlled member which, via suitable linkage, is connected to the valve easing thereby producing a followup action; the linkage may take the form of a pantograph. In a modification, the annular ring may have a square configuration. In a further modification, Fig. 4, when the working fluid is a liquid, such as oil, the valve member 72 may be surrounded by a second ring member 78 connected thereto by webs 76 of less thickness than both the rings, the oil being returned from one or other of the ports 31, 32, 33, 34 through a port 80 back to the reservoir.
Patent GB-1047590-A (GB)
Title: Plug and socket connectors
IPC: H01R13/18
Filed: 1963-11-06
Abstract: 1,047,590. Two-part couplings. G. GL€SEL. Nov. 6, 1963 [Dec. 28, 1962], No. 43873/63. Heading H2E. A socket connector which receives a blade plug 4, has a main contact piece 3, and a spring 8 which surrounds the main contact piece 3 and presses the plug blade 4c against it. The contact 3 may be formed, Fig. 2, with a loose pressure piece 7, so the plug is compressed between members 3 and 7 by wire spring 8, and a raised pip 7a engages an elongated hole 4d in the plug blade. The wire spring 8 may be replaced by a sheet spring 9, Fig. 6, and the pressure piece 7 may be omitted so the spring 9 presses the plug blade against the single main contact piece. The contact is held in the insulating housing by screw 3a, which also serves to secure a wire to the contact piece. Multiple units may be mounted on a frame to form multipolar plug and socket devices.
Patent GB-949685-A (GB)
Title: Bolt or stud tensioner
IPC: B25B29/02
Filed: 1960-12-21
Abstract: 949,685. Screwing-up and unscrewing studs &c. BABCOCK & WILCOX CO. Dec. 21, 1960 [Dec. 23, 1959], No. 43954/60. Heading B3N. [Also in Division F2] A screwing-up or unscrewing device for insertion in the draw-bar 63 of a stud tensioner 50 (see Division F2) to engage the socket-head 55B of the stud comprises keys 116A for engaging keyways 118 in the drawbar and a bar 119 for engaging slots 63B, 63D in the drawbar. The wrench may be raised to an inoperative position in the drawbar and retained by engaging the adjustable knob 120 of the wrench in an enlargement, Fig. 2A (not shown), at the top of the slots 63D. The drawbar has screw-threads at the lower end for engaging the stud and handles 109 at the top for turning the bar. In a modification, Fig. 18, an anvil member 122 may be secured to the drawbar and struck by a wheel-hammer 125, the hub 123 of which is slotted at 123A to receive projections 122A of the anvil. In a further modified tensioner with a similar impact wrench 114 for releasing the stud, Fig. 20, a pneumatic motor 400 rotates, through a flexible coupling 401, the drawbar for screwing-up or unscrewing the stud. During these operations, a nut 64 or 264 rotates with the drawbar. Reference has been directed by the Comptroller to Specification 915,754.
Patent GB-999901-A (GB)
Title: Improvements in or relating to feed water heating systems for the steam boilers of electrical generating equipment
IPC: F22D1/30
Filed: 1961-12-12
Abstract: 999,901. Feed water heating systems. HICK, HARGREAVES & CO. Ltd., and R. M. ARROWSMITH. Dec. 12, 1962 [Dec. 12, 1961], No. 44378/61. Heading F4A. Condensate from condenser 1 is extracted by pump 2 and delivered to a low-pressure direct contact feed water heater 3 whence it falls by gravity into the upper part of a second feed water heater 8 working at a higher pressure level, before being discharged by pump 5 into the remainder of the feed water heating system, perhaps including high level de-aerating heater 6 and a pump 7. One or more surface-type heaters 9 may be inserted in the flow path. In a modification, more than two feed water heaters may be arranged in cascade such that the water flows by gravity from one to the upper part of the other. The height between any two adjacent direct contact heaters in feet is not less than the pressure difference expressed in feet head of water. A suitable direct contact heater, Fig. 2, comprises a series of drip trays 11, 12, 13, 14 and 15 over which the condensate, after entering the heater body 10 from the inlet 17 passes in turn to be heated by the steam entering through the valve 16, the heated condensate being withdrawn through the outlet 19. A vent condenser 18 may be fitted in which an air release vent 21 can withdraw the leakage air. A float control 20 is linked with valve 16.
Patent GB-1318589-A (GB)
Title: Heat stable polyester cord reinforced rubber structure
IPC: D06M101/16
Filed: 1970-09-17
Abstract: 1318589 Reinforced rubber structure GOODYEAR TIRE & RUBBER CO 17 Sept 1970 [3 Oct 1969] 44385/70 Heading D1P [Also in Division C3] A process of manufacturing a heat stable structure containing a heat stabilised polyester cord bonded to rubber with an adhesive composition deposited on the cord prior to its embedding in the rubber comprises introducing in the vicinity of the adhesive bond from 0.025 to 5 parts by wt. per 100 parts by wt. of adhesive of at least one heat stabilizing agent for the polyester selected from a tris [(substituted) aziridinyl] phosphine oxide, a sulphide of general formula: a polycarbodiimide of the general formula: bis (tri-n-butyltin) oxide and a hindered phenolic phosphorus compound having the general formula: wherein R is a hydrocarbon radical (4 to 10c), P is phosphorus and y and z are integers 1 or 2 and x+y=3 and A is selected from the group consisting of wherein R' and R" are the same or different tertiary alkyl R' radicals (4 to 8C) R''' is hydrogen or alkyl radicals (2 to 10C) and X is a saturated aliphatic divalent radical (1 to 4C). The adhesive composition is applied to the cord in two separate dips, the first dip containing a water soluble or dispersible expoxy resin and the second dip containing a phenol/ formaldehyde resin, the stabiliser being in one of the dips. The epoxy resin is formed from the reaction of epichlorohydrin and glycerol or pentaerythritol. An example of the stabiliser is tris [1-(2-methyl) aziridinyl] phosphine oxide and the first dip may contain a resorcinol/ formaldehyde blocked polyisocyanate.
Patent GB-930944-A (GB)
IPC: B66C23/60
Filed: 1961-12-12
Abstract: 930,944. Ships' derricks. H. W. A. VON DIETLEIN, [trading as H. C. STULCKEN SOHN]. Dec. 12, 1961 [Dec. 13, 1960], No. 44524/61. Class 78 (4). A power driven capstan 18, Fig. 1, slews a jib 4 of a derrick by moving along a rope 13 as it revolves, whilst buffing is effected when the same rope is wound in or paid out by a winch 12. As described, a reversible motor is accommodated within the capstan and operates as described in German Specification 926,688. The several turns of rope which pass round the capstan are separated by radial guide pins which extend inwards from the capstan cage 22. Fig. 3 shows an embodiment in which a drum 109 is driven by a motor 119 mounted in the end of the jib 4, the rope 13 being guided by rollers 123. In Fig. 4 the axis of drum 209 is perpendicular to the jib axis and two sets of guide rollers 223, 223a are provided at right-angles to each other. Fig. 7 shows an arrangement with an offset drum 218 and guide rollers 323. In each embodiment the transmission 125 is non- reversible so that no brake is required. In Fig. 8 several runs of the rope 13 are provided to facilitate handling heavy loads and the capstan is as described with reference to Fig. 4. Instead of the rope 13 a chain may be used in each of the embodiments, the capstans being replaced by sprockets. Alternatively, the capstan drum may have depressions 518a, Fig. 10, into which fit beads 513e on a flexible member 513. Only a portion of the member 513 need have beads.
Patent GB-910804-A (GB)
Title: Improvements relating to drums and pulleys for belt-type conveyors
IPC: B65G39/02
Filed: 1960-12-29
Abstract: 910,804. Endless belt conveyers. WHITTING- TON ENGINEERING CO. Ltd., and PATES, A. D. Dec. 29, 1960, No. 44602/60. Class 78 (1). A driving drum for an endless belt conveyer comprises a frame formed by radial vanes 6 welded to a centre shaft 5, two metal strips 9, 10 being wound helically to opposite hands on the frame. The outer edges 8 of the vanes 6 follow a gentle arc and the radial distance of each strip 9, 10 gradually increases as the strips approach one another so that the drum presents a cambered surface. The strips may have a rounded external surface. The opposing helices of the strips act to maintain the conveyer belt central on the drum and surplus material cling- ing to the belt is dislodged by the strips to fall through gaps 11 between the strips. In Fig. 1 (not shown), a drum is adjustable for tensioning the conveyer belt.
Patent GB-891385-A (GB)
Title: Improvements in and relating to decorative fasteners
IPC: A44B17/00
Filed: 1960-12-30
Abstract: 891,385. Stud and socket fasteners. UNITED-CARR FASTENER CORPORATION. Dec. 30, 1960 [Dec. 30, 1959], No. 44864/60. Class 44. A decorative fastener for attachment to an article of clothing comprises an attaching member including a cup or like shaped portion defined by a series of tangs 14 and a series of support engaging prongs 18 extending in opposed relation to the tangs, a decorative insert assembled in the cup shaped portion and including a base 4 and a cap 10 of larger diameter than the base and spaced therefrom by a neck 8 the tangs being bent inwardly into the neck to secure the insert, the cap being such a diameter as to extend radially outwardly beyond the tangs so as to conceal them from view when the fastener is viewed end on from the outer face of the cap 10. The prongs 18 engage in the curled tip 28 of a socket 24. The prongs 18 and tangs 14 extend from each side of a ring. The base of the button has a recess 30 therein to accommodate support material.
Patent GB-1094330-A (GB)
Title: Furnace wall stiffening structure
IPC: F22B37/20
Filed: 1965-10-22
Abstract: 1,094,330. Furnace walls. COMBUSTION ENGINEERING Inc. Oct. 22, 1965 [Nov. 12, 1964], No. 44925/65. Heading F4B. The walls of a divided furnace water tube steam boiler are braced by external horizontal backstays 74 and tie rods 90 extending through the furnace between opposed walls 12, 14 and connected to the backstays intermediate the ends thereof. The tie rods are surrounded and cooled by bifurcated water tubes 48 forming the combustion chamber dividing wall 42. The ends of the tie rods pass through sealed openings 98 in the tubular walls of the furnace and are attached to the adjacent ends of a split backstay 74 by means of brackets 96 with pins 94 extending through slots 92, 95 therein. Individual tubes 36 are welded to horizontal channel ties 60 which in turn are connected by arms 79 and pin-and-socket means 82 to a channel 80 welded to the backstays 74. The backstays 74 are supported by vertical backstays 76 and the external walls of the furnace are covered wth insulating material 70. In an alternative embodiment (Figs. 7-10, not shown) the tie rods are replaced by a plurality of finned tubes (102) joined together at their fins and supplied with fluid from headers (104) attached by slotted brackets (116) and pins (120) to the external face of an adaptor (106) located between and engaging the adjacent ends of split vertical and horizontal backstays (76), (74). The tubes (102) extend through the adaptor (106).
Patent GB-1214290-A (GB)
Title: Automatic door closers
IPC: E05F3/10
Filed: 1969-09-11
Abstract: 1,214,290. Automatic door closer. DORKEN & MANKEL K.G. 11 Sept., 1969 [13 Sept., 1968], No. 44954/69. Heading E2M. In an automatic door closer the opening of the door rotates shaft 12 and causes cam 13 to bear against one of rollers 17 on slide 15 whereby slide 15, rods 24, bridge 28, tongues 35 and vertical roller 36 are moved away from shaft 12, thereby compressing springs 25 between slide 15 and stationary member 26. Piston 33, in cylinder 32, follows roller 36 under the action of spring 34, and draws damping fluid from housing 10 into cylinder 32 through a non-return valve. To close the door springs 25 push slide 15 towards shaft 12, thus rotating cam 13 and shaft 12. The closing motion is damped by the piston and cylinder assembly. The initial compression of springs 25, and hence the door-closing speed, can be adjusted by threaded spindle 29.
Patent GB-1358308-A (GB)
Title: System for the transmission of information representative of a  transition between two states
IPC: H04L25/493
Filed: 1971-09-28
Abstract: 1358308 Digital transmission DE STAAT DER NEDERLANDEN TEN DEZE VERTEGENWOORDIGD DOOR DE DIRECTEUR-GENERAAL DER POSTERIJEN TELEGRAFIE EN TELEFONIE 28 Sept 1971 [1 Oct 1970] 45098/71 Heading H4P In a system for transfer of point of time and direction of a transition having at the transmitter a scanning device for scanning the input at a fixed repetition rate and controlling an encoding device which comprises means for representing, in a code word having a fixed number of bits, e.g. 4 or 5, the direction of a transition and its place in a fixed pattern, the pattern being repeated at a selected multiple of the repetition rate, the invention resides in an encoding device which assigns within the code word 3 bits which are characteristic of the state after transition. At the receiver a reforming device includes a shift register having one stage more than the fixed number, and a logic circuit effecting a "two out of three" majority decision on three places in the shift register. At the transmitter input signals s are scanned under the control of clock pulses in a D-type trigger circuit RT the output from which is passed to a shift register comprising six D-type trigger circuits BS-ST the shift register being driven by transitions AT- of a -4 arrangement of J-K flip-flops BT, AT receiving clock pulses c. A single shot trigger circuit P1 is connected to detect 0#1 transitions of s by means of output rt from RT, and trigger circuit P2 1#0 transitions by means of an output rt. Outputs #p1, #p2 are connected to inputs of RS, QS, PS for simultaneously bringing them into one of two states. The other outputs p1, p2 are connected to inputs of an encoding device comprising AND gates K1-K8 and NOR gates L1-L4. A switch SW enables stage AS to be by-passed thence develop a pattern of code words, 4 or 5 bits in registers BS-PS which are transmitted through stage ST to line. At a 4 bit receiver, Fig. 3, incoming signals sr are fed to a clock pulse sync. circuit CL, clock pulses cl from which are fed to a trigger circuit CT which clocks a shift register BR-NR also receiving input signals sr, majority decision being performed by NAND gates C1-C3 and D1, D2 tapped from the outputs of QR-NR. The position of bits contained in a code word is determined by NAND gates N5, N6 through H1, H2 which combine inputs as shown in the Fig. The reforming device also includes J-K trigger circuit ET having h1, h2, d1, d2 inputs and clock pulses cl, the outputs et, et controlling single shot trigger circuits p3, p4, et also being the output from the arrangement. Depending on the position of an error the majority decision circuit may be accelerated or retarded. A 5 bit receiver is described with reference to Fig. 2 (not shown).
Patent GB-1000993-A (GB)
Title: Packaging machine for the production of sealed tubular packages
IPC: B65B65/02
Filed: 1962-11-29
Abstract: 1,000,993. Packaging-machines. HAMAC-HANSELLA A.G. Nov. 29, 1962 [Jan. 12, 1962], No. 45138/62. Heading B8C. A packaging-machine of the kind wherein a tube of wrapping material is pulled over a filling nozzle and is sealed transversely at intervals to enclose materials fed through the latter and wherein vertically reciprocating sealing jaws draw off the wrapping material, is characterized in that the closing of the jaws is effected by at least one compressed air piston through a transmission linkage, the cylinder, piston and linkage all moving with the jaws. As described, two cylinders 12 are mounted on cheeks 3 which are joined by a web 2 to a lifting column 1. Each piston 14 and piston-rod 15 are hollow and enclose a compression spring 16. At the commencement of a cycle each cylinder 12 is under pressure from air supplied to connection 13, each spring 16 is compressed and the column 1 is in its highest position. The jaws 6, 7 are then closed. The column begins to move downwards causing the tube 4 to be pulled downwards and then each cylinder is vented, but the jaws do not open since a pawl 21 (Fig. 5) acts on a roller 20, mounted on each piston-rod end 17 to prevent this. At the end of the downward stroke a photo-electric cell 35 senses a marking on the tube 4 and actuates a solenoid 30 which through a shaft 32 actuates the pawls 21 so that they release the rollers 20 thus causing the springs 16 to expand and the jaws to open. The upward movement of the column now begins and just before it has reached the top of its travel compressed air is again fed into the cylinders, thus forcing each piston and pistonrod back against the bias of springs 16, to close the jaws 6, 7. The pawls 21 reset and the cycle recommences.
Patent GB-1075135-A (GB)
Title: Fastening members with drilling tips
Inventor: GUTSHALL CHARLES EDWARD
IPC: B21K1/44
Filed: 1964-11-06
Abstract: 1,075,135. Forging self-drilling screws, breaking drills, reamers, self-tapping screws. ILLINOIS TOOL WORKS Inc. Nov. 6, 1964 [Nov. 8, 1963], No. 45356/64. Headings B3A, B3C, B3E, B3H and B3N. In a method of making a drilling tip on a drilling and tapping screw, an entering end is formed on a shank of a blank together with a protective portion united to the tip of the entering end by frangible portions, and thereafter breaking off the protective portions thereby to create cutting edges. A blank for the screw is formed or extruded with a head, a shank and an end portion of reduced diameter. The blank is cold-forged between dies 38, 40 which form flutes 62 and curvilinear portions 66, which direct chips from the cutting edges, and protective end portions 36. After forging, the blank is rolled between threadforming dies and, if desired, the portion 24 may be simultaneously worked to size. The thread-forming operation may precede the forging operation and the screw may be hardened and coated if required. The screws are next placed in a shoot (90) and fed by gravity towards a rotating arm (92) which carries a severing blade (94), (Fig. 10, not shown), and the blade (94) knocks off the portions 36 to form a ragged cutting edge. If required, the cutting edges may be ground smooth or the side surfaces may be ground to size when not formed during thread-rolling. A reaming portion may be provided by forming a taper towards the drilling tip and grinding side surfaces 65a thereon.
Patent GB-1122638-A (GB)
Title: Improvements in or relating to composite filters
Inventor: SPURNY KVETOSLAV
IPC: B01D53/00
Filed: 1965-10-27
Abstract: A disc filter for collecting particles for analysis from a gas comprises a layer of chlorinated P.V.C. fibres acting as a primary filter, deposited on a layer of xerogel of nitrocellulose, which acts as a fine, secondary filter.  The filter retains all particles larger than 0.1m  from gas passed therethrough and may be weighed before and after passage of gas, for quantitative analysis, or dissolved in acetone to release the accumulated particles for chemical analysis. In manufacture, the fibrous layer is applied to the xerogel layer and they are cold pressed together, then a heated metal ring is applied to produce peripheral bonding of the layers and a punch, cuts out the disc along the line of bonding.  A 'xerogel' is a dry gel obtained by evaporating solvent from a solution of a polymer.