baber/WOPTO huggingface dataset:
Patent GB-413420-A (GB)
Title: Improvements in and relating to the production of studs on extruded rubber articles
IPC: B29D30/68
Filed: 1933-02-22
Abstract: 413,420. Cutting grooves in rubber tyres, pedals, &c. GARE, T., c/o Hazel Grove Rubber Co., Ltd., Bramhall Moor Lane, Hazel Grove, Stockport. Feb. 22, 1933, No. 5382. [Class 31 (i).] Studs are produced on extruded rubber tyres, bicycle pedals, &c., by providing longitudinal grooves or ribs on the article during extrusion, and subsequently employing a grinding-disc or a milling-cutter to form cross grooves in the article. A machine for forming studs on rubber tyring comprises a shaft 1 on which are loosely mounted a pair of radius arms 4 having at their upper ends a shaft 6, and carrying pivotally another pair of arms 7 carrying at their ends a spindle 9 on which is mounted a grinding-disc 23. The disc is driven from the shaft 1 by belts 12, 14 provided with jockey pulleys 16, 17, and the arms 4 are oscillated, to carry the disc 23 across the work, by a crank-pin 27 on a shaft 24, driven by gearing 25, 26, and a link 28. The shaft 24 also carries a doublelift cam 30 adapted to oscillate an arm 32 pivoted to a link 34 adjustably connected at its other end to a lever 36, rockable about a shaft 40 and carrying a pawl 38. The pawl engages a ratchet wheel 39 on the shaft 40 and drives, through gearing 40, 41, a shaft 18 carrying a pulley 19 on which the tyring 20 to be ground is supported ; guide-rollers 22 maintain the tyring in the groove of the pulley. In operation, the grinding-disc 23 is moved by the arms 4, 7 across the work, the arms being guided to follow the curved contour of the tyring by engagement of a roller 43 on the arms 7 with an adjustable cam rail 45. At the end of each stroke of the grinding-disc, the cam 30 operates, through the ratchet and pawl gearing, to feed the pulley 19 and the work to bring the work into position for the next groove to be cut on the return stroke of the disc 23.
Patent GB-307610-A (GB)
Title: Improvements in brake mechanism for cycles or motor cycles and other vehicles
IPC: B62L3/02
Filed: 1928-02-21
Abstract: 307,610. Day, A. G., Newey, A., and Bowden Brake Co., Ltd. Feb. 21, 1928. Brake mechanism. - Bearing lugs for roller levers of cycle &c. brakes comprise an arcuate inner part 3, Fig. 2, adapted partly to embrace the handle-bar 4, and a spigot 2 adapted to pass into the handle-bar, the spigot and lug being secured to the handle-bar tube by welding. The lug and spigot may be formed from a single metal blank by pressing &c. The spigot 2 passes completely through the tube 4 and its end 7 is welded in a hole 6 therein, the hole being steeply countersunk to form an annular space into which the metal flows. The spigot may be formed separately from the lug 1, and may consist of a rod 9, Fig. 4, screwing into the lug 1 either before or after the lug is placed in position on the bar 4, the spigot in the latter case being provided with a head 11, which may be below the outer surface of the bar 4 and be covered with the welding metal at 12. One or both of the holes 5, 6 in the bar 4 may be formed by plunging, the inturned edge of the hole then forming the annular space for the welding metal. In the form shown in Fig. 6, the bar 4 is provided with an additional supporting member 14 consisting of a short length of tube, which may be of slightly larger diameter than the interior of the bar 4 and be split at 15, so that it can be contracted for insertion. Holes 6, 17 in the tubes 4, 14 are countersunk to form an annular space for the welding metal. In other forms, the additional supporting member consists of a sleeve co-axial with the spigot, the outer end being outwardly flared to form the annular space at the hole 6, and the inner end engaging the inner surface of the bar 4, either directly or through a separate or an integral washer. The outer end of the spigot may be formed with a head or enlargement by splitting, expanding, &c., whereby the spigot and lug are secured to the handle-bar additionally to the welding. A wedge may be inserted in the fork-like expanded end, and be secured in position by the welding. Alternatively, the end of the spigot may be spun over so that the metal fills the hole in the handle-bar, the attachment being assisted by subsequent welding. In the form shown in Fig. 16, the spigot 2 passes through one hole only in the bar 4, the ends 28, 29 of the lug 1 adjacent to the bar being welded thereto. A wire 30 may be passed through the ends 28, 29 and the bar 4, the ends of the wire being electrically &c. welded to the lug.
Patent GB-525351-A (GB)
Title: Improvements relating to roller mills for cereal grain
IPC: B02C4/28
Filed: 1939-02-18
Abstract: 525,351. Roller mills. SIMON, Ltd., H., and BALL, J. S. Feb. 18, 1939, Nos. 5490 and 26261. [Class 59] Feed mechanism for a roller mill for cereal grain comprises a horizontal vibrating or reciprocating member moving in the gap at the base of the hopper and means for regulating the feed rate automatically in accordance with the head of stock in the hopper by varying either the amplitude of movement of the horizontal member or the size of the gap at the base of the hopper. As shown in Fig. 1, a bar a is reciprocated above a vertically adjustable base plate e by an eccentric m, arm k, lever g pivoted at h, and link f, and the amplitude of the reciprocations is controlled by the movement of a pin j in a slot i in the lever g under the action of depending link n, a lever o pivoted at o<SP>1</SP>, and a plate p which rises or is depressed in accordance with the pressure head of stock in the hopper b. Instead of varying the throw of the bar a the plate e may be connected to the plate p so that the feed gap is automatically varied. In a further arrangement the rate of delivery from the hopper is controlled by the automatic raising and lowering of a gate at the lower edge of a side of the hopper, and plates are fitted upon the horizontal member of an L-section reciprocating frame to provide a stepped form at that side at which delivery occurs. The reciprocations should be at a rate of not less than 400 per minute. According to the first Provisional Specification, the feed unit including the means for reciprocating the vibrating bar may be removable from the machine or it can be lifted about a pivot to put it into or out of service position ; and provision may be made for locking the pin j in position.
Patent GB-1240464-A (GB)
Title: Improvements in or relating to clutch release bearings
Inventor: NEAL HUBERT WALTER THOMAS
IPC: F16D23/14
Filed: 1967-06-02
Abstract: 1,240,464. Clutch control. SKEFKO BALL BEARING CO. Ltd. 15 July, 1968 [2 June, 1967], No. 5498/71. Divided out of 1,240,463. Heading F2L. A friction clutch release, ball thrust bearing comprises inner and outer races 69, 64, each one extending axially beyond the other. The inner race extension comprises a flange 73 cooperable with clutch lever actuating projections. The outer race extension 65 comprises an extremity dimensioned to pass with clearance through a ring of declutching lever ends 66, a shoulder rounded in radial crosssection and co-operable with said lever ends, and a flange 72 which together with the rounded shoulder presents a groove 68 accommodating the declutching lever ends.
Patent GB-1388011-A (GB)
Title: Transformer arrangements for wired broadcasting systems
IPC: H04H20/76
Filed: 1972-02-07
Abstract: 1388011 Wired broadcasting; hybrid circuits COMMUNICATIONS PATENTS Ltd 28 Feb 1973 [7 Feb 1972] 5611/72 Headings H4R and H3U [Also in Division H1] In a wired broadcasting system wherein highfrequency and audio signals are both fed to each subscriber outlet an insert for providing both outgoing and spur terminals comprises an impedance network providing a direct current connection between the input terminals and the ongoing and spur output terminals, thereby providing negligible impedance for audio frequency signals. High frequency signals suffer low attenuation passing between the input terminals and the ongoing and spur terminals, but there is a high impedance to signals  from the spur terminals to the ongoing terminals.  The impedance network comprises a transformer having a core of a material such as ferrite, comprising core parts 1 and 2, separated by an air gap of empire cloth 17 and bearing windings 7, 8, 9, 10 and 11, 12, 13, 14 respectively, 7, 9, 11 and 13 being bifilar and having centre taps, the above windings being connected together as shown, connections also being made to terminals 15 and 16, which are joined by capacitor 22, and to capacitor 20 and a resistor 21 of value corresponding to the system impedance. The incoming signal is fed through bifilar choke 18 to windings 7 and 11 of which the other ends join the outgoing feeder. Windings 9 and 13 are connected via a bifilar choke 19 to provide a spur feed.
Patent GB-637618-A (GB)
Title: Improvements relating to automatic electric switches
IPC: H01H73/30
Filed: 1948-02-26
Abstract: 637,618. Automatic circuit-breakers. ROTAX, Ltd., and BOURNE, W. G. Feb. 26, 1948, No. 5748. [Class 38 (v)] A circuit-breaker closed by a push-button r and tripped open thermally or by a button v, comprises a contact arm d pivoted at c and given a snap-action by a spring link g, i compressed between a swivel-piece h on the arm d and a pivot on a bell-crank lever f. The lever f is pivoted at c and connected by a toggle linkage j, k to an arm n pivoted at m. On depression of the button r, a slide p strains a spring q and moves the junction of the links j, k downwards into an overset position where it is retained by the thrust of a spring l, the arm n being held stationary by an integral part t thereof bearing on the upper end of the limb of a T-shaped catch u. During this movement the spring i moves over-centre and the contacts e, b close. A screw y on a load-current carrying bimetal strip x, or a spring arm w actuated by the push-button v, moves the catch u to disengage the part t, whereupon the toggle j, k is moved back overcentre by the spring q and a spring o restores the part t into engagement with the catch u.
Patent GB-1215135-A (GB)
Title: Improvements relating to the decorating of hollow articles
Inventor: NICHOLLS BRYAN FREDERICK
IPC: B44C1/26
Filed: 1967-02-07
Abstract: 1,215,135. Moulding decorated hollow articles. METTOY CO. Ltd. 5 Feb., 1968 [7 Feb., 1967], No. 5812/67. Heading B5A. [Also in Division B6] Hollow plastics article decorated by an applied foil are made by performing the foil to the shape of a mould in which the article is to be formed or finished, placing the foil in the mould to form a lining thereto, inserting a hollow plastics parison or hollow plastics preform into the mould, closing the mould and bonding the foil to the plastics article by the application of heat and pressure. The foil may be made in two or more parts which fit together to cover substantially all the interior of the mould and may comprise a transparent film with printing on its inside face. The mould surface may comprise a pattern in relief or intaglio to shape the surface of the article and air may be introduced into the preform to assist the expansion and bonding to the foil. The plastics article which may be an inflatable ball may be formed from polyvinyl chloride or polyethylene.
Patent GB-460072-A (GB)
Title: Process for concentrating oxidized ores by means of froth flotation
IPC: B03D1/001
Filed: 1936-02-27
Abstract: Oxidized ores are rendered amenable to flotation by treating with one or more complex polyacids of the metals tin, tungsten, vanadium, germanium, and molybdenum, or with one or more soluble salts of these acids.  The ores are conditioned prior to flotation in a solution of the acids or salts, the solution being preferably made slightly acid or alkaline to promote hydrolysis.  Depressing agents, collecting agents, and frothing agents are then added and the pulp subjected to flotation.  In examples an oxidized chromium ore is conditioned in an alkaline solution of ammonium molybdate for 40 minutes and then floated with water glass as depressor, oleic acid and aerofloat as collectors and pine oil as frother; an oxidized manganese ore is conditioned with sodium stannate and sodium vanadate, quebracho bark is added as a depressor, and the floating effected at 35 DEG  C., with stearic acid and amyl xanthate as collectors and terpineol as frother; a tin ore is conditioned at 30 DEG  C. with an acid solution of tungstic acid and floated with sodium palmitate and cresol.  The treatment of oxidized ores of chromium, manganese, cobalt, copper, uranium, titanium, tin, tungsten, and vanadium is referred to.
Patent GB-1033837-A (GB)
Title: Preparation of acetals from acetylene
Inventor: WILLIAMS ROGER OWEN
IPC: B01J27/06
Filed: 1964-02-12
Abstract: Acetals are prepared by reacting acetylene with a primary or secondary alcohol in the presence of a halogen compound of a platinum metal.  Preferred metals are Pt, Rh, Ru and Os.  The alcohol is preferably used in excess. An acid and/or an alkali metal salt, e.g. a sodium halide, may also be present.  The acid may be provided by a compound which yields free acid under the reaction conditions, e.g. an acyl chloride.  Examples describe the reaction of acetylene with n-butanol, ethylene glycol, ethanol, n-propanol, sec-butanol and cyclohexanol using platinous chloride, sodium chloroplatinite, rhodium trichloride, osmium trichloride and ruthenium trichloride as the catalyst.
Patent GB-588752-A (GB)
Title: Improvements in or relating to concrete mixers and the like
IPC: B28C7/04
Filed: 1945-03-09
Abstract: 588,752. Weighing-apparatus fitted to concrete mixers. MOWLEM & CO., Ltd., J., and McGIBBON, R. H. March 9, 1945, No. 5948. [Class 143] A mixer for concrete or the like embodies a weighing unit comprising a spring whose opposite ends are connected to the ends of a weighing rope which passes around the skip or other load-containing device, and over sheaves between said device and the spring. The mixer frame a has an extension b with guide rails c for a spring balance unit consisting of a compression spring d, Fig. 3, a piston f, and rod g in a cylinder e, A wire rope h, separate from the usual lifting rope i, passes round the skip k, over pulleys l, and is attached to the rod g, and cylinder e respectively. A rack r carried by a bracket s meshes with a pinion p mounted on a spindle o which carries a pointer n moving over a calibrated dial m as the spring d moves.
Patent GB-542377-A (GB)
Title: Improvements in or relating to apparatus for fixing closures onto bottles and like containers
IPC: B67B3/14
Filed: 1940-04-02
Abstract: 542,377. Capsuling bottles &c. METAL CLOSURES, Ltd., and FINLAYSON, W. B. April 2, 1940, No. 5954. [Class 125 (ii)] To the head 1 of a capsuling device is fixed an adapter 7 carrying an annular set of horizontal radial elements 8, rockable in vertical planes about fulcra 22. The flanged inner ends of the elements 8 embrace a rim 10 on the pressure applying member 2. When the bottle, carrying a loose capsule 4, is pushed up against the spring pressed member 2 the lower flanges 11 flatten a bead 14 of the capsule against the bottle neck.
Patent GB-179006-A (GB)
Title: Improvements in or relating to electric signalling systems
IPC: H04M7/16
Filed: 1921-02-22
Abstract: 179,006. Western Electric Co., Ltd., (Western Electric Co., Inc.). Feb. 22, 1921. Telephone systems; simultaneous telegraphy and telephony. -Call signals are transmitted by a succession of impulses of alternating current of different frequencies in the voice-frequency range. The invention is applicable for wireless calling but is described in connection with signalling over a long-distance telephone line, being of special utility on lines used also for telegraph purposes, where the usual lowfrequency ringing current would be objectionable. Figs. 1 and 2 shows stations X, Y equipped with identical call transmitting apparatus S1, S2 and receiving apparatus R1, R2. When the operator at station X plugs into the jack 1, a relay 13 is energized in the sleeve circuit but relays 6, 11 in the same circuit are marginal and do not respond. The depression of the signalling key 2 shortcircuits the relay 11 to energize the relay 6 to energize relays 5, 15, which close the feed circuits of a valve generator O, consisting of an oscillator T1 and amplifier T2, and connect it to the outgoing line L. The relay 15 also connects a 16-cycle ringing generator 4 to a polarized relay 3, which intermittently connects an additional condenser 17 in the valve circuits, so that oscillations of two different voice-range frequencies are intermittently generated. At the receiving station Y these currents are amplified and fed to selector circuits F, which pass currents of one frequency to a transformer W1 and rectifying-valve T3 and currents of the other frequency to a transformer W2 and rectifying valve T4. A polarized relay 107, having its upper and lower windings in the plate circuits of the valves T3, T4, is thus caused to vibrate its armature and to de-energize a normally energized relay 108. The relapse of the relay 108 energizes a relay 109 which lights the call lamp 110. When the Y operator plugs in the jack 110 the relay 113 is energized and deenergizes the relay 109 and lamp 110. During the conversation of the subscribers, either operator can recall the other. For example, if the X operator presses the key 2 the relay 108 is again de-energized and short-circuits the relay 106, energizing a relay, corresponding to the relay 11, Fig. 1, in the Y operator's sleeve circuit, which locks itself and lights a supervisory lamp, corresponding to the lamp 21, Fig. 1. The call relay is unlocked when the called operator depresses her speaking key.
Patent GB-329699-A (GB)
Title: Improvements in or relating to crown blocks for the derricks of well-drilling plant
IPC: E21B19/02
Filed: 1929-02-25
Abstract: 329,699. Marks, Sir G. C., (Emsco Derrick & Equipment Co.). Feb. 25, 1929. Borehole apparatus.-The crown block of a well-drilling derrick comprises a lower frame consisting of outer beams 20 and inner beams 24 resting at the ends on the upper platform or water table 15 of the derrick; the inner beams support the bearings 34 of shafts 31 supporting sheaves 30 for the sand-line &c., the inner beams depending below the sheaves and having angle-iron reinforcements 29 which guard the sheaves from danger. On the lower frame is supported an upper frame comprising beams 40 with spacers 41, the beams 40 supporting a shaft 44, held by clamps 45, and revoluble carrying-sheaves 43 for the tackle controlling the drill rods. A small sheave 36 on one of the shafts 31 guides the cable leaving the sheaves 43. The angle-iron &c. members 29 may be independent of the beams 24.
Patent GB-252792-A (GB)
Title: Improvements in oil furnaces
IPC: F23D5/00
Filed: 1925-03-06
Abstract: 252,792. Kr÷ger, O., Oswald, 0., and Oswald &. Co., O. March 6, 1925. Open tray burners; oil-supply and overflow fittings.-The level of oil in an open-tray burner is maintained and regulated by constant supply of oil to a communicating supply tank provided with a constant level of oil by overflow, which tank may have an adjustable overflow pipe or be adjustable in height. The combustion tray or burner may be cooled by air which is utilized for secondary combustion. The combustion tray 1 is surrounded by a chamber 10 to which compressed air is supplied by pipes 11, 2, the air passing through slots 12, 3 to the flame. An overflow pipe 14 is adjustable by screwing into the base of the supply tank 7 and the combustion tray 1 is trough-shaped so that adjustment of the level in the tank 7 alters the surface area of the burning oil to regulate the flame. Oil is constantly supplied to the tank 7 from a reservoir 21 through a valve 22 and pipe 16, and drains to a collecting tank 18 whence it is raised by a pump 19 and a pipe 20 to the pipe 16. In a modification, the supply tank 7 is adjustable relatively to the burner by being mounted on a pivoted lever, and the oil continually overflows at its edge.
Patent GB-1382045-A (GB)
Title: Waxy crude oil compositions
IPC: C10L1/22
Filed: 1971-03-05
Abstract: 1382045 Waxy crude oil composition SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 3 March 1972 [5 March 1971] 6132/71 Heading C5G and C5E A waxy crude oil contains a polymer having a number average molecular weight of at least 4000 and being produced by the copolymerization of (1) at least one olefinically unsaturated compound containing an aliphatic hydrocarbon side chain with at least 10 C atoms, (ii) at least one olefinically unsaturated compound containing a heterocyclic ring and optionally (iii) up to 50 mole per cent of at least one olefinically unsaturated compound containing neither such a heterocyclic ring nor such a side chain. Examples of (i) are alkyl esters of unsaturated carboxylic acids, vinyl and allyl esters of saturated carboxylic acids, amides and imides of unsaturated carboxylic acids, and alkyl vinyl ethers. Examples of (ii) are sulpholene and vinyl compounds of pyridine, quinolene, or isoquinolene. The examples describe copolymers of alkyl acrylates with 4-vinyl pyridine.
Patent GB-1196811-A (GB)
Title: Improvements in Clutch Friction Plates.
IPC: F16F15/129
Filed: 1968-02-07
Abstract: 1,196,811. Damped resilient couplings. FRANCAISE DU FERODO S.A. 7 Feb., 1968 [8 Feb., 1967], No. 6135/68. Heading F2U. In a clutch plate having a resilient connection providing limited angular displacement between a friction-lined plate 16 and a flanged hub 10, the displacement initially involves compression of a set of relatively weak springs 23 followed by compression of a set of stronger springs 31 damped by friction-washers 30, the springs 31 being located radially outwardly of springs 23. As shown, springs 23 are retained in apertures 24 in the hub flange 11 by a backing washer 16A on plate 16, and a counter-plate 18, said plates being secured together by studs 19. The ends of springs 23 are engaged by arcuate thrust members 25 located on either side of the flange 11 and connected to plates 16, 18 by pegs 26. Surrounding the members 25 is a pair of annular plates 12 secured together by studs 13 so as to clamp friction-washers 30 against the flange 11. Clearance holes are provided in the flange and plates 16, 18 for the studs 13 and in the flange and plates 12 for the studs 19. The springs 31 are located radially outwardly of the friction washers in apertures 32, 33, 34 in the flange 11, plates 12 and plates 16, 18 respectively, being pre-stressed in apertures 32 and having an initial clearance in apertures 34. On application of torque to the discs 16, 18, therefore, the springs 23 are first compressed by the thrust members 25 until the clearance between openings 34 and the springs 31 has been taken up whereupon these springs also begin to act. At the same time, the studs 19 engage the edges of the clearance holes 21 in plates 12 and bring the friction washers into operation. To reduce shock on reversal of torque, three of the openings 34 may be dimensioned so that in the reverse direction, their respective springs 31 come into action after the other three springs.