baber/WOPTO huggingface dataset:
Patent GB-1529754-A (GB)
Title: Injection blow moulding apparatus
IPC: B29C49/16
Filed: 1976-01-26
Abstract: 1529754 Injection blow-moulding FARREL PLASTIC MACHINERY CORP 26 Jan 1976 2971/76 Heading B5A In an injection blow-moulding device, an injected parison 26 is supported by a blow/ injection core 16<SP>1</SP> projecting from one end into a split blow mould 28, 29. Projecting into the mould from the opposite end is a tube 38 which at the beginning of the blowing operation telescopes with a small clearance over the parison. During the initial phase of the blowing operation expansion of the parison is restricted by the tube to be longitudinal. During a subsequent phase of the operation the tube is gradually withdrawn so that the longitudinally expanded parison can progressively radially expand into contact with the mould (see Fig. 5). Alternatively, the tube can be withdrawn after longitudinal expansion and the radial expansion effected. A cushion of air, perhaps assisted by pressurized air directed radially inward through the tube wall, prevents frictional contact of the parison and the tube. The tube 38 is slidable over a rod 40, the position of 'which may be fixed or which may be longitudinally movable by a piston and cylinder mechanism 43, 44, and is actuated by a piston and cylinder drive 64 through a rod 66 and a collar 62 attached to the rear end of the tube. Movement of the tube in phase with the blowing is ensured by a valve 68 controlled in accordance with the blowing air. In one mode of operation of the device, the rod is fixed with its free end flush with the mould wall whilst in another mode the rod starts with its free end adjacent the parison and during the blowing is withdrawn until a collar 52 on its rear end engages a stop 46 carried by the piston and cylinder device 53, 44, at which point the free end of the rod is flush with the mould wall.
Patent GB-916377-A (GB)
Title: Improvements in or relating to the manufacture of lenses
Inventor: BEECH SAMUEL ROBERT
IPC: B29D11/00
Filed: 1960-01-27
Abstract: 916,377. Moulding optical lenses. COMBINED OPTICAL INDUSTRIES Ltd. Jan. 23, 1961 [Jan. 27, I960], No. 2973/60. Class 87(2). A lens casting mould comprises a pair of dies which are sufficiently flexible to conform with the surface of the casting material during solidification and contraction. These may be made of glass or steel having a thickness between 75 and 4 mm. and at least one die may be located in a backing element with respect to which the die is axially moveable. The backing element 9 fits into a circular hole in a die carrying part 24 and is held there by a cap 27 clamped thereto by means of a clamp 28 and a bolt 30. The thickness of the cap 27 can be altered to vary the separation of the two dies. The other backing element 8 is held in position in a recess 34 in a die carrying part 23 by a screw 35 and a spring 36 to permit axial movement of the die. The dies 6 and 7 may be held in place either by an elastic band 20 which surrounds the edges of the dies and the contiguous edges of the elements 8 and 9 or by locating pins secured to the front face of the backing element and entering recesses in the back of the die 12 (Fig. 1 Provisional, not shown) or by a simple locative pin integrally formed on the axis of the die to enter a hole on the backing element (Fig. 2 Provisional, not shown). Dies of magnetisable material may be held in contact with the backing elements by magnetisation of the latter. Specification 915,523 is referred to.
Patent GB-389621-A (GB)
Title: Improvements in mechanism for feeding paper to printing machines
IPC: B65H5/00
Filed: 1932-02-01
Abstract: 389,621. Ratchet gearing. HARRIES, A. W., 31, Cole Park Road, Twickenham, Middlesex. Feb. 1, 1932, No. 2980. [Class 80 (iii).] In a mechanism for feeding a paper web through a printing-machine, the feed-roller shaft is controlled by means of two mutilated gear wheels, one of which is rotated by the printing mechanism while the other is associated with the feed-roller, and which intermesh during the printing periods to overcome a friction feeding-device, thereby operating a pawl-andratchet gear for rotating the feed-roller shaft, whereby an intermittent rotary motion is imparted to the shaft, means being provided for setting the mechanism so that the periods during which the shaft is rotated and the paper fed through correspond to the printing. operation. The feed-roller shaft m carries a loose gear g chain-driven from a continuously rotating gear f mounted on an intermediate shaft e driven from the impression cylinder. The gear g drives a mutilated gear k, loose on the shaft m, through friction discs in the direction of the arrow x, until the gear k comes into engagement with a second mutilated gear h on the shaft e, when it is driven in the reverse direction. The gear k carries a spring-pressed pawl s, which on this reverse movement engages the teeth of a ratchet r secured to the shaft m, thus imparting an intermittent rotation to this shaft, The extent of the rotation is varied by a shrouding-ring v carried by a disc u which is adjusted to vary the number of teeth of the ratchet r exposed, the disc u being held in position by a detent w which engages slots 2 in the disc. The pawl s is slidably mounted on a pin in the housing t, and a compression spring which acts as a shock absorber is mounted between the side of the casing and the pin. The pawl is disengaged from the ratchet on its backward movement by a cam surface 24 on a pivoted lever 21, which engages a pin 4 on the pawl ; the lower end of the lever carries a rubber washer 23 which presses against the ratchet, so that when the backward movement of the pawl occurs, the lever 21 is rocked and the cam 24 causes the pawl to be raised out of contact with the ratchet teeth. The shaft e also carries a cam 8 which engages a cam follower 9 mounted on a rod 10 pivoted to a link 11. This link is attached to a pin 13 which carries a bar 12, and a pin 18 thereon contacts with and carries the front of the pawl s during its idle backward movement, thus acting as a flexible stop for the gear wheel k. The nose of the cam 8 striking the roller 9 at the moment when the gears h, k are about to intermesh tends to ensure the teeth of the wheels h, k coming into engagement, while the high part 19 of the cam by its control of the pin 18 acts as a shock absorber for vibrations set up by the reversal of the direction of rotation of the wheel k. Specification 389,246, [Group XVI], is referred to.
Patent GB-1249861-A (GB)
Title: Manually propelled vehicles
Inventor: BYRD GEORGE MALCOLM
IPC: A61G5/02
Filed: 1968-01-19
Abstract: 1,249,861. Manually-propelled vehicles. G.M. BYRD, and G. J. BYRD. 9 Jan., 1969 [19 Jan., 1968], No. 2984/68. Heading B7E. A manually-propelled vehicle comprises at least one castor wheel and two non-steerable driving wheels 20, 21 which may be driven by hand levers at different speeds to steer the vehicle. In one embodiment, Fig. 1, the wheels 20, 21 are connected to independent axles 22, 23 which are independently suspended by springs 27 and are received in a common bearing 24, the axles 22, 23 having cranked portions 31, 32 to which are connected rods 33, 34 pivoted to hand levers 35, 36 which may be oscillated at different speeds. Castor wheels 28, 29 are provided. In another embodiment, the inner ends of the axles 22, 23 are connected to sprockets engaged by chains each connected at one end to one hand lever and at the other end to a spring anchored to the front of the vehicle frame, the sprockets incorporating free-wheel devices so that the driving wheels do not drive the hand levers. Independent foot-operated brakes act on the driving wheels to assist steering, and each comprises a projection engaging the wheel tyre below the horizontal plane through the wheel axle, so that as the driver dismounts the brakes automatically engage because of the suspension springs. In a further embodiment, the seat is wholly forward of the wheel axis and the suspension springs are replaced by fixed bearings. The castor wheels may be at the rear and the driving wheels at the front; there may be castor wheels at fore and aft of the driving wheels.
Patent GB-1067104-A (GB)
Title: Surface treatment of glass articles
IPC: C03C23/00
Filed: 1966-01-24
Abstract: In a process for treating a surface of a glass article the surface is exposed to a hot flame to cause selective vaporization of the more volatile constituents of a thin surface layer of the article. The process is exemplified with reference to a borosilicate glass plate one surface of which was exposed to a plasma flame having a temperature of 25,000 DEG  K. at the cathode, the flame being 50 mm. in length and 8 mm. in diameter.  The vaporization products comprised alkali metal borates.  The glass had the composition in weight per cent SiO2 80%, B2O3 10%, Al2O3 5%, Na2O 5%.
Patent GB-631605-A (GB)
Title: Improvements in or relating to automatic volume control circuits
IPC: H03G3/22
Filed: 1947-01-31
Abstract: 631,605. Radio receiving systems; radio navigation. DECCA RECORD CO., Ltd., and O'BRIEN, W. J. Jan. 31, 1947, No. 3084. [Classes 40 (v) and 40 (vii)] A radio receiver is modified to permit of operation despite strong Morse or like intermittent interference by the provision of limiting means in the input circuits and the inclusion of a unidirectional device in the A.G.C. circuit. The gain is reduced for the duration of an excessively strong input by means of high resistances 12 whereby grid current causes the I.F. amplifiers to be biassed back, while the corresponding change in potential of the A.G.C. line 23 is minimized as the charging path comprises the high back-impedance of a rectifier 22 included between the line and the A.G.C. rectifier 14. Shunt condensers 13 in conjunction with resistances 12 give a short timeconstant so that the amplifiers return rapidly to normal upon cessation of the interfering signal; at the same time the A.G.C. line potential returns to the working value via the low forward-impedance of the rectifier 22. A resistance-condenser combination 27, 28 of long time-constant connected across the A.G.C. line maintains the average potential at the value which would obtain in the absence of interference. The arrangement is more particularly applicable to radio navigational systems of phase-comparison type, Specification 620,479 being referred to; in such an application the phase-meter employed is without a returnspring and consequently maintains its reading despite the intervals in which interference renders the receiver inoperative.
Patent GB-762509-A (GB)
Title: Apparatus for injection moulding of plastic material
IPC: B29C45/53
Filed: 1954-02-02
Abstract: 762,509. Injection-moulding machines. SPECIALITES ALIMENTAIRES BOURGUIGNONNES. Feb. 2, 1954 [Nov. 14, 1953], No. 3131/54. Class 87(2). A plunger 8 feeds granular plastic material from a hopper 7 into a heated chamber 6, and by the time the material gets to the bottom of the chamber it is molten. When a multi-part injection piston 4, 11, 3 rises from the Fig. 1 position the molten material passes from the bottom of the chamber through holes 10a and bore 10b into a cylinder 9. The piston then descends, the holes 10a being closed as shown in Fig. 2, and forces material out of the cylinder through a nozzle 2 into a mould. The injection piston comprises a rod 4 which slides in plunger 8, a bored cap 11 secured to the lower end of the rod, and a sleeve 3 slidable between abutments 12, 12<SP>1</SP>. The opening and closing of the holes 10a are effected by relative movement of the cap and the sleeve. As the piston descends it forces molten material through a passage 14, thereby pushing a rod 13 to the right to unlock nozzle 2. As the piston ascends it sucks the rod back in to block the nozzle as shown in Fig. 1, and also sucks back the drop e of plastic material. An abutment 15 retains the rod. If the material does not flow well, the piston may be raised, on its upward stroke, above the floor of chamber 6, thereby increasing the feed to the injection cylinder. A torpedo 16 may be provided in the chamber.
Patent GB-414720-A (GB)
Title: Improvements in or relating to machines for delivering articles or packets
IPC: G07F11/04
Filed: 1934-02-02
Abstract: 414,720. Cases for storing and delivering articles. NICHAMIN, A. J., 46, Byron Avenue, South Woodford, London. Feb. 2, 1933, No. 3178. [Class 18.] Articles are stored in piles in receptacles 1 each provided with a releasable hinged bottom 5 and a sliding ejector 6, for ejecting the lowermost article, which are operated together with auxiliary means for temporarily supporting the penultimate article by mechanism comprising a sliding cam frame 36 actuated by a solenoid 41. The auxiliary supporting means includes a plate 23 which thrusts the penultimate packet laterally against a spring urged plate 25 so that it is supported on fixed abutments 28 during ejection of the lowermost packet. The ejector 6 and plate 23 are operated from the cam 36 by rollers 22, 33, whilst the plate 5 is operated from a roller 16, carried by the frame, through a slotted cam member 15. An ejected article falls onto a platform 56 carried by a pivoted counter-weighted beam 58 which is tilted to close contacts 61, 62 and to energize a solenoid 57 thereby operating a further ejector 70 to discharge the article through a delivery opening (not shown) in the casing 2. The frame 58 is locked against movement when unloaded by engagement of a pin 76 thereon with a stop 78 which is disengaged from the pin by pivotal movement of platform 56 relative to the frame when loaded. Contacts 61, 62 are retained closed until ejector 70 has completed its movement by an electromagnet 79 in circuit with contacts 61, 62 and a pair of contacts 81, 82 normally bridged by a sliding contact member 84 which breaks the circuit when the solenoid core 63 has completed its stroke. Solenoids 41 may be controlled by a remotely situated multiple push-button switch or by a multiple slot coin-operated contact closing means, and, in an alternative construction, may be arranged horizontally to operate the ejectors 6 directly. Manual operating means may replace the solenoids 41. According to the Provisional Specification, receptacles may be arranged in pairs, so that an article discharged from a rearward column ejects and replaces an article from its associated receptacle in front.
Patent GB-714419-A (GB)
Title: Improvements in or relating to straight bar knitting machines
Inventor: MONK SAMUEL ARTHUR
IPC: D04B11/00
Filed: 1951-02-10
Abstract: 714,419. Knitting-machines. MONK (SUTTONIN-ASHFIELD), Ltd., S. A. Feb. 11, 1952 [Feb 10, 1951], No. 3288/51. Class 74 (2) The knocking-over bits 7 of a straight-bar machine have webs 8 and throats 9 which engage the fabric and hold the loops down when the needles are raised for the reception of the yarn for the next course. The pressing edge 10 of the sinker bed 1 has an extension 11 which ensures that the needle beards are maintained pressed until the points of the beards have passed beyond the loops. The leading edge of the sinker bed 1 is recessed as at 12 to provide tricks for the reception of the knock-over bits.
Patent GB-690891-A (GB)
Title: Improvements relating to locks
IPC: E05B35/10
Filed: 1951-02-12
Abstract: 690,891. Locks. LINES, A. Feb. 5, 1952 [Feb. 12, 1951], No. 3336/51. Class 44 In a locking latch which may be operated by either of two keys, the lock having two sets of slots 7, 9 one set of which is caused to register by each key, and two talons 6, 8 each opposite one of the sets of slots, the talons are moved by a key-actuated yoke 4 to cause engagement of one of them with.that set of slots which has been brought to register. In the arrangement shown, a spring loaded talon plate 1 is actuated by a key-operated cam 2, and the yoke 4 carrying the talons 6, 8 is pivoted on a lug 5 and co-operates with sets of slots 7, 9 in sliding lock plates. Stop. 14 controls recessional movement of talon 8 from the lock plates and corresponding movement of the talon 6 is controlled by the engagement of the latter with slot 11. According to the Provisional Specification the talons are slidably mounted on the talon plate.
Patent GB-194503-A (GB)
Title: Improvements in and relating to recording mechanism
IPC: C10J3/72
Filed: 1922-02-04
Abstract: 194,503. Abbott, A. P., Johns, W. H., and Cunniffe, J. A. Feb. 4, 1922. Recording particular operations.-In apparatus for recording the cycle of operations in gas - producer installations the recording pen is directly actuated to make contact with the. record drum during the gas making period, by the steam pressure operating during that period. A record drum 1 is adapted to be rotated by a clockwork 5 which through gearing also drives a screwed spindle 6 on which is mounted a carriage 7 provided with a, capilliary pen 8 or other marking device normally free of the record drum. A crank rod 10 actuated by a pressure sensitive device engages an extension piece attached to the carriage 7 and causes a record to be made when the steam is admitted to the gas plant.
Patent GB-453558-A (GB)
Title: Improvements in and relating to distribution fittings or couplings for electric circuits
IPC: H01R29/00
Filed: 1936-02-05
Abstract: 453,558. Plug boards. UNITED-CARR FASTENER CORPORATION, 31, Ames Street, Cambridge, Massachusetts, U.S.A.-(Assignees of Clark, E. ; 53, Derby Road, Beeston, Notting- ham) Feb. 5, 1936, No. 3489. Convention date, Feb. 6, 1935. [Class 38 (i)] For connecting apparatus optionally to one of several supplies, one of a series of lead-in terminals 2 mounted individually on an insulating panel 1 is connected to a conducting strip 6 to which takeoff terminals 3 are permanently connected. The interchangeable connection is made by a screw stud 11 that screws into a boss 9 formed on the terminals 2 while its head 10 engages the strip 6. The terminals 2 have prongs to anchor them in the panel 6 and other insulating laminations 4, 13 are attached by rivets.
Patent GB-866789-A (GB)
Title: Process for producing derivatives of chloramphenicol and of the pantothenates
IPC: C07C233/46
Filed: 1957-08-02
Abstract: Complexes of chloramphenicol with alkali or alkaline-earth metal salts of D-pantothenic acid are prepared by heating the components for a few minutes in an inert solvent in which one of the components is rather insoluble but dissolves upon the action of the other component.  The resulting complex may be crystallized by stirring the amorphous complex (obtained by vacuum distillation of the solvent from the foregoing reaction mixture) with a mixture of a lower halogenated hydrocarbon and a light petroleum ether and allowing the mixture to stand at a temperature below 0 DEG C.
Patent GB-688506-A (GB)
Title: Improvements in or relating to wrapping machines
IPC: B65B11/28
Filed: 1951-02-15
Abstract: 688,506. Wrapping-machines. FORGROVE MACHINERY CO., Ltd., and RUSSELL, A. Nov. 27, 1951 [Feb. 15, 1951], No. 3688/51. Class 94(i)  In a machine in which a block of plastic material is lifted with a wrapper into a pocket of an intermittently-rotating wrapping wheel at a receiving station, whereby the wrapper is folded into U- formation about three sides of the block, each pocket of the wheel comprises a movable base plate and pivoted side jaws and mechanism is provided operating in timed relationship with the lifting member for moving downwardly the base plate of the pocket at the receiving station and simultaneously opening the side jaws preparatory to the arrival of the block in the pocket, and thereafter raising the base plate and gradually closing the jaws onto the block as the latter is lifted into the pocket. The machine shown is of the kind described in Specification 565,144 and comprises a wrapping wheel 10 mounted for rotation about a shaft 11 and driven through Geneva mechanism. Each pocket 16 of the wheel is formed by a base plate 23, carried by a radially-slidable bar 25, and side jaws 24 mounted on pivot pins 38 and integral with arms 39 coupled by links 40 to arms 41 integral with plates 33 secured to the bar 25 by a bolt 34 and stud 35. The latter carries a roller 36, see Fig. 5 (not shown), which runs in an annular track 37 formed in a circular member 15 secured to the shaft 11. The plate 23 is movable upwardly relative to the bar 25 to a limited extent against the action of springs 27 accommodated in tubular bosses 32 on the plates 33 and tubular bosses 31 on a bracket 28 and plate 30 (not shown) which are secured together by bolts 29 and embrace a waisted portion 25a of the bar 25, the bracket 28 being attached to the plate 23. The member 15 comprises a movable section 15a which contains part 37a of the annular track and is attached to a lever 42 actuated by a cam 45 As a pocket approaches the receiving station A. the roller 36 moves on to the track section 37a and the cam operates to lower the section and hence the bar 25 until the base plate is positioned adjacent a wrapper 22 which has been fed into position above a block 17 of margarine which has been positioned on a cam-operated lifting member 18 by a pusher 21, the jaws 24 being opened by the linkage 39-41. As the member 18 rises, the wrapper is flattened between the surfaces of the block and base plate, and the cam 45 then gradually returns the parts to their original positions so that the side jaws close on to the block and wrapper as they move into the pocket, thereby ensuring tight folding of the wrapper on to the sides of the block. The side jaws are formed with shoulders 50 which limit the downward movement of the base plate at the top-pressing station C. The member 15 may be formed with a further movable section adjacent the discharge station D, which section is movable outwardly to open the jaws slightly to facilitate the ejection of the wrapped block. Specification 559,357, [Group XVI], also is referred to in the Provisional Specification.
Patent GB-1366804-A (GB)
Title: Devices for feeding loose materials
IPC: B65G65/42
Filed: 1972-01-27
Abstract: 1366804 Endless conveyers MOSKOVSKOE OTDELENIE TSENTRALNOGO NAUCHNOISSLEDOVATELSKOGO I PROEKTNOKONSTRUKTORSKOGO KOTLOTUR-BINNOGO INSTITUTA IMENI II POLZUNOVA 27 Jan 1972 [4 Feb 1971] 3790/72 Heading B8A A feeder for moist material comprises a pipe 2 delivering loose material to a batcher 3 which comprises driving star wheels and guide rollers 9, receiving tables 14, 15 and a multirow chain forming two operating strands 10, 11 and carrying scrapers moving along the tables. The material is fed to a conveyer 4 under the tables. A portion of the lower operating strand adjoins the star wheels and moves along the tables, while another portion sags freely.
Patent GB-655462-A (GB)
Title: Improvements in and relating to the manufacture of multi-ply fabrics
IPC: D06M17/00
Filed: 1948-02-10
Abstract: 655,462. Compound fabrics. BLEACHERS' ASSOCIATION, Ltd., HART, H. D., and BARNETT, S. Feb. 10, 1948, No. 3816. [Class 140] In the manufacture of multi-ply fabrics a fabric layer containing cotton is treated with a chemical water-repellant agent, e.g. stearamidomethyl pyridinium chloride, is napped on one or both sides, and is treated with sulphuric acid to dissolve some of the cotton, e.g. mainly the nap. Two or more such layers may be pressed together or one or more may be united with one or more untreated layers. The acid is neutralized, e.g. by passing the composite fabric into running cold water, so as to precipitate cellulose as a bond between contiguous layers.