baber/WOPTO huggingface dataset:
Patent GB-1257042-A (GB)
IPC: B29C48/67
Filed: 1969-04-25
Abstract: 1,257,042. Extruding polyisobutylene. BADISCHE ANILIN- & SODA-FABRIK A.G. 25 April, 1969 [27 April, 1968], No. 21161/69. Heading B5A. [Also in Divisions B1-B2 and C3] A screw extruder comprises a barrel 8 and a screw 7 rotatable in the barrel, the screw 7 comprising a series of alternating threaded and unthreaded sections in zones 1a, 1b, 2a, 2b, 3a, 3b, the distance between the section in zone 1b and the barrel being from 1¢-4 times the distance between the section in zone 2b and the barrel, and the diameter of the section in zone 3b being less than that of the section in zone 2b. The barrel may be provided with heating and cooling zones (not shown) and a degassing zone 5. The screw may be provided with threaded sections in zones 4, 6 before andafter the threaded section in the degassing zone. An extruder head 10 including a die is located at the end of the barrel. Material to be degraded, e.g. high M.W. polyisobutylene, is fed into the barrel from hopper 9. The profile of the unthreaded section in zone 1b may be frusto-conical as shown or cylindrical.
Patent GB-1257564-A (GB)
IPC: C08F8/00
Filed: 1969-03-07
Abstract: 1,257,564. Treating PVC. GAYLORD ASSOCIATES Inc. 7 March, 1969 [11 March, 1968], No. 12276/69. Heading C3P. PVC homopolymer wherein the onset of thermal decomposition occurs above 260‹ C. and the peak decomposition temperature is at least 290‹ C. is obtained by treating the PVC with a dialkyl (or aralkyl) aluminium halide or sesquihalide followed by a C 1 -C 4  alkanol. The PVC is preferably suspended in a halogenated aromatic hydrocarbon, reacted at -10‹ to 30‹ C. for 0À25-2 hours with diethyl aluminium halide then treated with methanol.
Patent GB-1264413-A (GB)
IPC: H04Q3/00
Filed: 1969-06-04
Abstract: 1,264,413. Automatic exchange systems. PLESSEY CO. Ltd. 26 May, 1970 [4 June, 1969], No. 28321/69. Heading H4K. In a telecommunication exchange in which a route is established through a relay switching network by the successive energization of crosspoint relays in response to the co-operation of a switching potential applied to the first relay of the succession with a succession of sources of potential applied at successive relays of the succession, the switching potential is applied via a constant current device and a voltage detector responds to changes of voltage at the output of the constant current device by replacing the switching potential by a holding potential. The arrangement allows the moment when all relays in the succession have been energized to be more reliably determined. To establish a path through the arrangement shown, transistor T2 is switched to conduction, enabling transistor T1. Transistor T1, diode wa and resistor a are connected to form a constant current arrangement which when enabled pass a constant current from the switching source S to a point D forming the let of a succession of relays R1, R2, R3, previously selected in a manner not described. Source S co-operates with a potential I1 to energize a relay R1 closing its contact r1 which in turn allows the source S to co-operate with a potential I2 energizing relay R2 &c. until at the end of the chain relay R3 closes contact r3 connecting the chain to terminating potential T. The resistance through which this is applied is distinctly different from that through which the potentials I1 to I3 are applied. Accordingly, when r3 closes the potential at D makes a sudden change which is detected by a voltage detector V. The voltage detector removes the enabling signal at the base of transistor T2, cutting off the source S and enables a transistor T3 to connect a hold potential H to the point D. In a modification (Fig. 2, not shown) the hold potential is gated through the voltage detector.
Patent GB-1264666-A (GB)
IPC: B65D39/08
Filed: 1969-03-03
Abstract: 1,264,666. Stoppers for drums. VAN LEER INDUSTRIES Ltd. 3 March, 1969, No. 11252/69. Heading B8T. A closure for a drum or the like comprises a plug (see Fig. 3) with a resilient sealing ring (12), Fig. 5 (not shown), compressed in the closed position, the plug having a number of radially projecting lugs 14 each with a part 14a projecting axially upward, and a flange 1 (see Fig. 2) fixed around, or integral with, the opening in the drum with projections 8 shaped complementarily to those on the lugs 14 under which the lugs engage with a bayonet type application. To facilitate engagement the projections on the flange and the plug have shaped cam surfaces 8c and 14c respectively. To facilitate removal there are similar surfaces 8d and 14d on the flange and plug respectively inclined at an oblique angle to the general plane of the closure.
Patent GB-1267102-A (GB)
IPC: H01H33/16
Filed: 1969-10-31
Abstract: 1,267,102. High voltage switches. S. & C. ELECTRIC CO. 31 Oct., 1969 [1 Nov., 1968], No. 53464/69. Heading H1N. A high voltage isolating switch, which may be like that described in Specification 966,110, is provided with a resistor 44 which is inserted in parallel with the contacts during closing to limit the inrush current. The resistor is enclosed in a porcelain insulator 46 and mounted, to one side of the plane of movement of the moving contact blade 24, by brackets 49, 51, on the fixed contact assembly 28, one end being connected to the contact. The other end carries a bent rod 56 with a vertical end part 63. An arcing contact 67, 72 attached to the blade 24 moves close to part 63 during the closing movement of the blade and an arc is struck inserting the resistor in circuit. During the final closing movement the blade 24 is rotated about its longitudinal axis, the arcing contact 67 thus being rotated away from the rod 56.
Patent GB-1287974-A (GB)
IPC: B60S1/38
Filed: 1970-04-03
Abstract: 1287974 Abrasive tools WASO Ltd 19 April 1971 [3 April 1970] 16008/70 Heading B3D [Also in Division B4] A hand tool for a windscreen wiper blade comprises a body 1 having a channel 4 provided with at least one abrasive surface whereby when a wiper blade is placed in the channel and the tool moved longitudinally of the blade, the wiping portion is abraded and at least part of any hardened surface area and/or at least some unwanted serrations or flaws are removed. The body consists of two plastics mouldings 2, 3 secured together by rivets or adhesive. The channel 4 in one edge of the body is V-shaped and may have abrasive moulded in its surface or be covered with an abrasive sheet of paper for abrading the wiper blade. The opposite edge of the body is also formed with a channel 5 having teeth or protuberances 8 which can be used for removing ice from the wiper blade. The edge portions 9 of the body are outwardly divergent and one portion may be shaped so as to be used to scrape ice from a window while the other portion has a flexible edge element which serves as a squeegee for removing water from a surface. A spring steel wire 13 which is pivotable or extendable from the body by movement of a slider may be used for cleaning the nozzle of a windscreen washer mechanism.
Patent GB-1296063-A (GB)
IPC: F04D29/32
Filed: 1969-05-03
Abstract: 1296063 Axial-flow fans; jet propulsion plant DOWTY ROTOL Ltd 6 April 1970 [3 May 1969] 22684/69 Headings F1C F1J and F1T A bladed rotor includes a row of blades and a ring-like member encircling the blades, the member being so mounted upon some at least of the blades as to be rotatable with the blades and to have freedom for limited movement with respect to the blades to accommodate any distortion of the ring-like member. An intermediate platform 32 separating fan blades 39, 40 of a bypass gas turbine engine from fan blades 21 is supported by the blades 21. For this purpose, each blade 21 has a spigot 30 carrying a partspherical member 31 which engages a correspondingly shaped depression 37 formed in the inner surface 38 of the platform 32. During operation, centrifugal force increases the diameter of the platform 32 by about one eighth of an inch, but the members 31 slide radially outwards on their spigots 30 under the influence of centrifugal force to maintain contact with the depressions 37. There may be more than the two rows of blades shown, and all, or some, of the rows may be of fixed pitch or of variable pitch, twist or camber. In the embodiment shown, the blades 21 are of fixed pitch while the blades 39, 40 are of variable pitch.
Patent GB-1296911-A (GB)
IPC: C07D249/06
Filed: 1970-02-19
Abstract: 1296911 5 - Aminotriazole - 4 - carboxylic acid esters EGYT GYOGYSZERVEGYESZETI GYAR 19 Feb 1970 [26 Feb 1969] 8103/70 Heading C2C Novel 5-aminotriazole-4-carboxylic acid esters of the general formula wherein Alk is a C 1-5  alkyl group and one of R<SP>1</SP> and R<SP>2</SP> is a hydrogen atom and the other is a m- or p-fluoro- or chloro-phenyl group, are prepared (a) when R<SP>1</SP> is a hydrogen atom, by reaction of a cyanoacetic acid ester of the general formula NC-CH 2 -COOAlk with m- or p-fluoro- or chloro-phenyl azide and (b) when R<SP>2</SP> is a hydrogen atom, by Dimroth rearrangement of the product of (a). Pharmaceutical compositions having anthelmintic activity comprise, as active ingredient, at least one 5-aminotriazole-4-carboxylic acid ester of the first general formula above, together with a physiologically compatible carrier and/or excipient, and may be administered orally, rectally or parenterally.
Patent GB-1297625-A (GB)
IPC: H03F3/183
Filed: 1968-12-31
Abstract: 1297625 Transistor amplifying circuits AMERICAN DANISH OPTICON AS (William Demant AS) 24 Dec 1969 [31 Dec 1968] 61958/68 Heading H3T In a transistor amplifier having a sound reproducer T, Figs. 1, 2, connected in the output stage between the collector of the output transistor and one battery terminal, negative D.C. feedback being provided between the output and input stages and the base-emitter diode of the input stage so connected as to stabilize the voltage drop across the sound reproducer. A hearing aid comprises direct-coupled transistors Q1-Q3, Fig. 1, in which Q1 and Q3 are of opposite conductivity type. A potentiometric network comprising diode D and resistors R5- R7 is connected between the collector of transistor Q3 and the negative supply line 16, variable resistor R5 being adjusted so that the potential between point a and the positive supply line 14 is equal to the base-emitter potential of transistor Q 1. Point a and the base of transistor Q1 are interconnected by a D.C. negative feed-back path comprising resistors R2, R3 which may be of low value, since they normally carry no D.C. In addition, the baseemitter voltage of transistor Q2 stabilizes the D.C. voltage drop across the collector resistor R1 of transistor Q1. Shunt capacitor C2 and variable resistor 20 provide an adjustable amount of A.C. feedback, resistor 20 forming the volume control. In a second embodiment the voltage across reproducer T, Fig. 2, is fed back to the emitter of transistor Q5 via resistors R12, R13, and thence via the base-emitter diode of transistor Q5 and resistors R2, R3, to the base of transistor Q1. Resistor R8 is adjusted to provide a voltage drop equal to that across resistor R12. The A.C. feedback around transistors Q3, Q5 is determined by resistor R1 in series with capacitor C4.
Patent GB-1297792-A (GB)
IPC: F16B7/00
Filed: 1969-08-12
Abstract: 1297792 Scaffold clamps; scaffold joints E CROWLEY 6 July 1970 [12 Aug 1969] 40193/ 69 Headings E1S and E2B A joint for connecting together a pair of tubular scaffolding members 10, 11, comprises a bracket of angle-shaped section connected to the exterior of the member 10 so as to project outwardly therefrom in a direction transverse to the length of the member, one flange 12a of the bracket having a threaded aperture 17 receiving a bolt 16, the other member 11 having a flattened end 11a in which is formed a slot 15 extending in a direction transverse to the length of the member 10. The two members are arranged in mutually transverse relationship with the edge of the flattened end engaging the other flange 12b of the bracket the bolt extending through the slot 15 and into threaded engagement with the hole to clamp the flattened end against the flange 12a. That part of the shank of the bolt adjacent the head thereof may be frusto-conical.
Patent GB-1302640-A (GB)
IPC: B65D3/04
Filed: 1971-07-15
Abstract: 1302640 Method of making packaging LJUNGGRENS PAPPERSINDUSTRI AB 15 July 1971 33223/71 Heading B8C In a method of making a packaging, which can be stored in the form of a planar blank in knock-down state, the opposite longitudinal edges of a preferably rectangular sheet 10 of flexible material such as P.V.C., polyethylene, or plastics coated cardboard are curled over respectively approximately 270 degrees to opposite planar surfaces of the sheet and one corner 15 of the sheet is brought toward the diagonally opposite corner 14 and the curled over edge portions are interengaged as shown in Fig. 2 whereupon the corner 15 is moved longitudinally away from the corner 14 so that the two curled edges are interengaged over their entire lengths and a tube is formed. The bottom edge 13 is curled inwardly to provide a stop for a bottom member 12 which is pushed down through the open top of the tube the latter taking up the shape of the member 12 which may be circular, square, triangular, &c. The top is closed by a cover 11 which is the same shape as the bottom member and which has a depending skirt which enters the upper end of the tube. The bottom of the tube may be closed by a cover such as 11 in which case the bottom end of the tube need not be curled as at 13.
Patent GB-1305545-A (GB)
IPC: B62D33/06
Filed: 1969-04-29
Abstract: 1305545 Vehicle doors SMITHS ELECTRIC VEHICLES Ltd 29 April 1970 [29 April 1969] 21828/69 Heading B7B A vehicle has a cab or compartment provided with a doorway and a door comprising a flexible roller-mounted member the roller of which is disposed at one side of the doorway. The roller-mounted member is in the form of a shutter 14 having a window 16 of transparent flexible material, and a rigid bar 18 is provided to stiffen the free edge of the shutter 14. A handle 20 also contains a hook element (not shown) to engage a slot 28 in a post of the doorway. A spring tends to wind the shutter on to its roller. The bar 18 has projections which engage angle members at the top and bottom of the doorway for holding and guiding the shutter 14.
Patent GB-1309538-A (GB)
Title: Roller box tools
IPC: B23B29/04
Filed: 1971-08-02
Abstract: 1309538 Roller box tools SAUNDERS ROLLER BOX TOOL CO Ltd and A SAUNDERS 2 Aug 1971 36201/71 Heading B3T A roller box tool comprises a tool post A which has an arm extending therefrom with an elongate slot J and which is secured to a platform region G on the tool body by a screw K extending through the slot. Further, the tool post is counterbored to house an adjusting screw for the tool, the adjusting screw B having an annular recess D into which a locating plate F is engageable to prevent axial displacement of the adjusting screw. The plate F is pivotable about a clamping screw in the tool post so as to be disengageable from the adjusting screw to facilitate easy removal of the tool from the tool post.
Patent GB-1317727-A (GB)
Title: Gas turbine engine
IPC: F02C3/22
Filed: 1969-07-02
Abstract: 1317727 Gas turbine engines STRUTHERS SCIENTIFIC & INTERNATIONAL CORP 2 July 1970 [2 July 1969] 33449/69 Heading F1G The invention relates to a gas turbine engine which is suitable for use with low calorific value combustible gas as fuel. The engine shown comprises compressor 1, combustion chamber 6 and turbine 11 which drives the compressor 1 also a useful load 13. The compressor has two inlets 2 and 3 which are circumferentially displaced, the inlet 2 being for air and the inlet 3 for low calorific value combustible gas. The compressor also has two outlets one 14 for a rich mixture of fuel and air and the other 8 for air. The rich mixture of fuel and air passes through line 14 and flame trap 5 to the combustion chamber 6 where it burns, and the air passes through line 8 and branches 8a, 8b to enter the combustion chamber through inlets 9 as dilution air. The combustion gases discharge through line 10 to the turbine.
Patent GB-1327873-A (GB)
Title: Moulding die for production of high-pessure decorative textured  laminates and a process for forming said moulding die
IPC: B29C33/56
Filed: 1971-05-03
Abstract: 1327873 Making moulds ESSO RESEARCH & ENG CO 3 May 1971 12673/71 Heading B3A In a method of forming a moulding die for making high-pressure textured surface laminates a die moulding plate is provided from a hard, heat-resistant metal, and the plate is polished and blasted with non-abrasive balls having a diameter of 0À010-0À040 inch. The plate is preferably of stainless steel and is electro-polished. It may be chromium plated and is blasted with chrome steel shot at a velocity of 4400-11,000 ft./min. The plating, polishing and blasting may be performed ir any order and the die is used repeatedly in forming the laminates, since the textured surfaces of the laminates do not adhere to the moulding plate.
Patent GB-1330275-A (GB)
Title: Device for rotating a film take-up reel in a photographic camera
IPC: G03B17/42
Filed: 1972-02-28
Abstract: 1330275 Photographic camera film feeds B N TEPLYAKOV V I KOVAL N F SEROV and Y P ZOLOTAREVSKY 28 Feb 1972 9075/72 Heading G2A A device for rotating a film taking-up reel (not shown) in a photographic camera so as to feed the film by uniform increments corresponding to picture frames comprises a shaft 2 fixed with a winding lever 1 and a stop 3 which on rotation of the shaft 2 engages a stop 5 on a bushing 4 mounted rotatably on the shaft and provided with a fixed gear 7 which rotates the reel carrier 13 through gears 8, 11, 12 and a unidirectional clutch 9, 10. To feed the film by uniform increments the shaft 2 is provided with a rotatably mounted ratchet wheel and cam assembly 21, 22 associated with a prime indicator 23, ratchet wheel 21 being indexed one tooth pitch by a pawl 18 which is biased towards the wheel 21 by a spring (not shown) and engaged therewith when the stop 5 rotates a bracket 14 supporting the pawl 18. The ratchet wheel 21 which is biased in one direction by a spring 27 and prevented from moving in that direction by a detent 24 rotates incrementally the cam 22 which through cam follower 30, shaft 32 and a gear segment 33 rotates incrementally a gear segment 34 in a clockwise direction whereby the gap between stops 3 and 5 is increased.
Patent GB-1330501-A (GB)
Title: Blind rivets
IPC: F16B19/10
Filed: 1970-08-26
Abstract: 1330501 Blind rivets TEXTRON Inc 26 Aug 1970 40958/70 Heading F2H A blind rivet comprises a hollow rivet body having a head 1, shank 2b and tail 2c portions, the head being enlarged relative to the shank, the tail being a continuation of the shank and fast with it at an interface 2a, the head and shank portions being of a metal of relatively high shear and tensile strength, the tail portion being relatively ductile and formable, the rivet also including a pulling stem for extension through the body to effect deformation of the deformable tail to form a driven blind head. The two strengths may be provided by different heat treatments of the same titanium alloy or by different alloys, but the portions are welded together after being given their appropriate strengths. The pulling stem may be of one, two or three metals 11, 11c, 11d with interfaces between the portions, 11a, 11b so that metal of high tensile strength may be used for the pulling portion 7 with a metal of the plug portion 8 being more compatible with that of the rivet. The metal of the intermediate portion 11 is chosen so as to bond more strongly with each of the other metals than they do mutually. As shown, portion 9a shears off after forming the blind head and is retained between the head and plug. Alternatively (Fig. 5, not shown) a leading end of a plug portion 8 forms the blind head. After forming of the blind head the setting tool forces collar 4 to expand the preformed head (this is also retained by the plug 8) and the pulling portion fractures from the plug portion at a weakening groove (Fig. 4, not shown).
Patent GB-1332868-A (GB)
Title: Embroidery frame
IPC: D05C1/04
Filed: 1971-01-12
Abstract: 1332868 Sewing S TACHIBANA 12 Jan 1971 1517/71 Heading D1G An embroidery frame comprises an inner ring 11 and an outer ring 21 between which work is gripped, the inner ring having a flange 12 around the lower edge thereof, ratchet shaped shoulders 15 on its outer periphery and a protruding ridge 16 on part of each shoulder, the outer ring also having ratchet shaped shoulders 25 on its inner periphery and grooves 26 which receive the ridges. The rings are of synthetic resin material and are provided with peripheral undulations 13 to provide finger grips. Either the ridge or the groove or both may be provided with a fine grained rough finish to grip the material A.
Patent GB-1335807-A (GB)
Title: Energy absorbing reel for a motor vehicle seat belt assembly
IPC: F16F7/12
Filed: 1972-03-30
Abstract: 1335807 Energy absorbing reel for vehicle seat belt FORD MOTOR CO Ltd 30 March 1972 14949/72 Heading A3V An energy absorbing reel for a motor vehicle seat belt comprises a spring load spindle 11 for winding belt webbing 13 in a housing 10, an inertia locking means 14 in the form of an inertia member 17 carried on a helically screw threaded member 16 on the spindle 11 which member 17 lags rotation of the member 16 and is axially displaced into locking engagement with a clutch 18 on accelerated belt withdrawal, and a deformable member in the form of a metal strip 19 fixed at its inner end to a hub 15 on which the clutch 18 is mounted and formed as a spiral coil outwardly of two abutments 20, 21 on the housing 10 so that when the load on webbing 13 exceeds a predetermined value the strip 19 is wound on to the hub 15 and absorbs energy in the process. Instead of the inertia locking means shown, a retractor type locking means may be used. Instead of the locking means 14 being attached to the spindle 11 and the deformable member 19 to the housing 10, the deformable member may be attached to the spindle and the locking means to the housing.
Patent GB-1340186-A (GB)
Title: Exhaust muffler for vehicle internal combustion engines
IPC: F01N1/02
Filed: 1970-12-10
Abstract: 1340186 Making exhaust silencers; soldering; jointing USS ENGINEERS & CONSULTANTS Inc 10 Dec 1970 [30 Dec 1969] 58799/70 Headings B3A B3R and B3V [Also in Division F1] An exhaust silencer for a vehicle comprises a pair of preformed mating members, e.g. metal stampings or cast or moulded metal, ceramic or plastic, formed with indentations 10, 12, 14, 15, 16, 17, the members defining, when joined at their peripheral edges, e.g. by brazing, an inlet, an outlet and internal chambers. The indentations may form flow directing baffles (30, 31, 34, 35), Fig. 3 (not shown). The members may be relatively adjustable before joining to vary the silencing characteristics. The members may be internally coated with porcelain by dipping or spraying, and brazing material 65, Fig. 5, is located between indentations 62, 63 in the peripheral lips of the members. The porcelain acts as a flux when the assembled silencer is baked in an oven to fire the porcelain and effect the brazing.
Patent GB-1350287-A (GB)
Title: Pressure relief valves
IPC: F16K17/19
Filed: 1971-05-10
Abstract: 1350287 Pressure-relief devices D H WARD 10 May 1971 14089/71 Heading F1P [Also in Division F2] A pressure relief valve comprises a closure member 11 which is biased to close an opening 5 in a container 1 by a spring 14 held down by a cap 15 having an annular groove 17 which engages an annular projection 7 on an upstanding flange 6 around the opening. For small excess pressure in the container the closure member 11 is lifted against the spring bias and gas is vented through openings 20 in cap 15. For large excess pressures, such as in explosions, the cap 15 and member 11 are blown off.