baber/WOPTO huggingface dataset:
Patent GB-391579-A (GB)
Title: Improvements relating to esters of cyclopentenylacetic acids
IPC: C07C57/26
Filed: 1932-03-03
Abstract: Esters of D 2-cyclopentenylacetic acid in which the ester radicle contains at least three carbon atoms are prepared by the usual esterification methods, as also are esters in general of a -substituted D 2-cyclopentenylacetic acids in which the substituent is methyl, ethyl, allyl or D 2-cyclopentenyl. The products are useful in perfumery and hygiene.  Examples are given of the preparations of (1) the benzyl ester of D 2cyclopentenylacetic acid by interaction of benzyl chloride with the sodium salt of the acid, (2) the terpinyl ester of D 2-cyclopentenylacetic acid by treating the acid chloride with terpineol at ordinary temperature in the presence of pyridine; in the same way, the tert-butyl, geranyl, m- and p-cresyl, guaiacyl, thymyl, eugenyl, isoeugenyl, carvacryl, and methyl esters are obtained; (3) the ethyl, isobutyl, and benzyl esters of a -methyl-D 2-cyclopentenylacetic acid using the acid chloride and the alcohol; in a similar manner are prepared the methyl, ethyl, isobutyl, isoamyl, and phenylethyl esters of a -ethyl-D 2-cyclopentenylacetic acid, the methyl, ethyl, propyl, isopropyl, isobutyl, isoamyl, allyl, benzyl, and cinnamyl esters of a -allyl-D 2-cyclopentenylacetic acid, and the methyl, ethyl, and isobutyl esters of bis-D 2-cyclopentenylacetic acid; (4) the phenyl ester of D 2-cyclopentenylacetic acid by treatment of the acid chloride with sodium phenate in anhydrous toluene; (5) the isoamyl ester of D 2-cyclopentenylacetic acid by heating the acid with isoamyl alcohol in presence of sulphuric acid; the propyl, isopropyl, isobutyl, sec-butyl, phenylethyl, cyclohexyl, and cinnamyl esters are similarly prepared.  The boiling-point of each ester is stated.  Chlorides and anhydrides of D 2-cyclopentenylacetic acid and its above a -substitution products are prepared by the action of thionyl chloride on the acid in the case of the acid chloride and of acetic anhydride in the case of the anhydride.
Patent GB-808548-A (GB)
Title: Improvements relating to pneumatic vehicle wheel tyres having a breaker structure
IPC: G01F11/08
Filed: 1957-02-26
Abstract: 808,548. Pneumatic tyres. PIRELLI S.p.A. Feb. 26, 1957 [March 8, 1956], No. 6466/57. Class 144 (2).. In a pneumatic tyre having a substantially circumferentially inextensible breaker structure which is placed under circumferential tension on inflation of the tyre, the breaker structure comprises a strip or a set of superimposed strips, of parallel-cord rubberized fabric, bias cut to provide a cord angle of between 5 and 30 degrees, which is folded upon itself along two circumferential lines spaced apart a distance defining the width of the breaker, the unfolded strip, or set of strips, having a width at least double the width of the formed breaker. The folded strip or set provides a plurality of superposed layers throughout the width of the breaker, at least two of the layers having their respective cords in crossed relation to each other, preferably symmetrically with respect to the circumferential direction. Fig. 2 shows a strip with two lateral portions, each of a width five sixths of that L of the central portion which defines the overall width of the breaker, so that in their folded positions shown the two lateral portions overlap each other for a width S which is two thirds the width L. Two such folded strips may be superposed to form a breaker, the overall folded width of each strip being either the same or different. Fig. 4 shows a breaker formed by folding two superimposed strips and Fig. 5 shows two independent superposed cross-laid strips of parallel-cord fabric disposed between two of the layers of a folded strip. The independent strips may alternatively be disposed adjacent one or both outer faces of the folded strip. In all cases the cords of the strips may comprise metallic or natural or synthetic textile material rubberized with natural or synthetic rubber or rubbery plastic material.
Patent GB-978428-A (GB)
Title: Improvements in or relating to disc brakes
Inventor: PARNELL FRANK GORDON
IPC: F16D65/46
Filed: 1960-02-24
Abstract: 978,428. Disc brakes. AUTOMOTIVE PRODUCTS CO. Ltd. May 24, 1961 [Feb. 24, 1960], No. 6518/60. Heading F2E. A spot type disc brake in which the drag applied to the pads by the disc when brought into engagement therewith is utilized to increase the pressure exerted on the disc by the pads, comprises a floating pad carrier 8 having a fixed pad of friction material 9 to engage one side of the brake disc 4, a pair of movable pads 10, 11 for engaging the other side of the brake disc such that when a fluid-pressure operated wheelbrake cylinder 21 is actuated between the movable brake pads to apply them to one surface of the brake disc and the reaction exerted on the pad carrier 8 causes the fixed pad to be applied to the other surface of the brake disc, the pad carrier 8 together with the pads, is dragged by the disc in the direction depending on the direction of rotation of the latter to cause one of the movable pads to be urged against one side of a fixed abutment means in the form of a bracket 5, and the other movable pad is urged by roller and inclined plane mechanism 20 into further engagement with the brake disc to produce a self-energizing effect. An alternative arrangement shown in Fig. 4 discloses a pad carrier 26 carried by a torque link 27 mounted about one end on pivotal mountings 28 attached to the stationary axle housing 29. Liquid under pressure acting in the wheel cylinders 55 (56, not shown) urges movable pads 36 (37, not shown) towards the brake disc 34 and the reaction exerted on the pad carrier 26 causes a fixed pad 35 to be applied to the other side of the brake disc. The movable pads are dragged by the disc in a direction depending on the direction of rotation of the latter, causing one of the movable pads to be urged against the appropriate side of a shoulder and cause the pads to be forced into further contact with the brake disc by the camming action set up by co-operating inclined surfaces 53 and interposed rollers 54 to provide a self-energizing effect. The brake in each case may be released by springs (not shown). Adjustment to compensate for wear of the friction pads is effected by moving slippers 17 relative to the carrier 8 by the adjusting screws 19 (Fig. 2).
Patent GB-181073-A (GB)
Title: Improvements in or relating to clips or gripping devices for haulage purposes
IPC: B61B12/12
Filed: 1921-02-28
Abstract: 181,073. Jones, W. T. S. Feb. 28, 1921. Rope grips. - A haulage rope grip comprises a housing a into which a pair of jaws b connected by a bolt d and having tapered or converging outer surfaces is adapted to be drawn by a screw f so as to grip the haulage rope c. The screw is moved positively in either direction by the rotation of a nut g, this nut being prevented from axial movement by brackets h. A spring e tends to open the jaws, and the rope is prevented from rising too high in the open grip by lugs s formed on each jaw and passing across into a recess in the other jaw. Specification 175,194 is referred to.
Patent GB-909477-A (GB)
Title: Improvements in inertial guidance devices
IPC: B64G1/28
Filed: 1959-02-25
Abstract: 909,477. Stabilized platforms for inertial guidance devices. SOC. DE FABRICATION D'INSTRUMENTS DE MESURE. Feb. 25, 1959 [Feb. 26, 1958], No. 6613/59. Class 113. A stabilized platform for an inertial guidance device comprises a platform movable about a point which supports three floating integrating gyroscopes, at least two coupled accelerometers as well as torque motors, which adjust the position of the platform in response to signals from the gyroscopes, the relative axes of which motors are respectively aligned on to the input axes of the gyroscopes which are themselves positioned along the axes of a right-angled trihedral one of which axes is vertical, the complete assembly of units on the platform being statically balanced about the articulation point. The platform 17 is mounted on a head 8 by means of co-axial journals 11, 12 and roller bearings 13 and 14, the head being mounted in a fork 5 by means of co-axial journals 9 and 10 and roller bearings 6 and 7. The fork 5 is integral with an axle 2 pivotally mounted in the roller bearings 3 and 4 within a pillar 1. The pillar 1 is secured to the sphere 20, 21 which is fitted with a pair of co-axial journals 22, 23 aligning with roller bearings 24 and 25 of the gimbol-ring 26. The ring 26 is also fitted with co-axial journal 27, 28 associated with roller bearings 29, 30 of a spherical support member 31, 33 provided with a shock absorbing member 32. Journals 22 and 28 are provided with torque dampers 38 and 36 comprising annular ducts filled with a viscous liquid. The static balancing of the platform 17 is adjusted by screws 55, 56 and the units are accurately located on the platforms by setting marks. Electrical contacts, e.g. 46, 47, 48, 49, are provided, where necessary, at the points of articulation to feed the various units on the platform with a minimum degree of friction. The specification describes ways in which the platform may be used to control the stability of a carrier vehicle over its trajectory.
Patent GB-786248-A (GB)
Title: Improvements in or relating to die casting, injection moulding and other pressure machines
IPC: B29C45/68
Filed: 1956-03-02
Abstract: 786,248. -Casting-machines. BUHLER, GEB. March 2, 1956 [March 3, 1955], No. 6675/56. Class 83 (1). In a die-casting, injection-moulding or like machine having one die mounted on a stationary platen and a second die on a movable platen, the movable platen is formed of a rear part and a front part which are relatively movable, the second die is secured to the movable platen front-part, the movable platen rear and front parts co-operate to form a fluid-pressure chamber whereby, upon fluid being admitted to said chamber, the two movable platen-parts are forced apart, and there are provided mechanical elements which retain the movable platen rearpart in its forward position, and at least a locking means disposed between the movable platen front and rear parts and movable, whereby to retain said movable platen two parts in their relatively spaced-apart positions and so provide a mechanical lock against movement apart of the two dies. The movable die platen comprises two parts 4, 7, the part 4 carrying the die 3 and forming a piston 15 which engages in a cylinder 16 in the part 7 to form a pressurechamber 17 to which pressure-fluid may be fed through a pipe 18. Wedges 19 between the parts 4, 7 may be moved to open the parts or allow them to move towards each other, by double-acting pistons 20. The assembly is moved forward to the die-closing position by a piston 28 acting through links 26 and arms 25 pivoted to the rear-part 7, until the arms 25 reach the end of guide-surfaces 32, when they spread apart and engage the faces 34, Fig. 3. Pressure-fluid is then fed to the chamber 17 to provide the locking-force on the dies 1 and 3. The wedges 19 are then drawn tightly between the parts 4, 7 by the pistons 20, so that the necessary locking-force between the dies is effected exclusively through mechanical elements, i.e. die 1, stationary platen 2, tie-rods 6, cross-head 5, arms 25, back-part 7, wedges 19, front-part 4, and die 3. Metal is injected by plunger 11. After injection, the dies are unlocked by slightly increasing pressure in the chamber 17 so that the wedges 19 may be withdrawn, the pressure in chamber 17 is then relieved, and the movable platen-assembly withdrawn by piston 28, Fig. 4, the part 4 being initially held stationary by the casting until constrained to move by bolts 24, whereupon the dies open and the casting is ejected. The wedges may be actuated electro-magnetically. In a modification, the wedges are located within the pressure-chamber 17. In a further modification, Fig. 8, the wedges are replaced by a screw-threaded ring 41b which is turned by a piston to press apart, or allow to move towards each other, the parts 4b and 7b. In a further modification, an externally-threaded ring is located within the pressure-chamber.
Patent GB-563457-A (GB)
Title: An improved frog for the overhead conductor of an electric traction system
IPC: B60M1/14
Filed: 1943-04-29
Abstract: 563,457. Frogs for overhead electric conductors. BRITISH INSULATED CABLES, Ltd., LONDON PASSENGER TRANSPORT BOARD, BROOM, T. C., and POWELL, H. J. April 29, 1943, No. 6803. [Class 104 (iii)] In an overhead frog comprising main through conductors 2, 3 and a branch conductor 4, the movable tongues 5, 6 for connecting 2 to 3 and 2 to 4 alternatively are pivoted at 7 and 8 and connected by a link 16 to move together. The tongues are moved to reverse by a pulley 31 operated by a pull chain 34 so that a block 49 thereon engages a finger 48 on a sleeve 35 and rotates the latter, thereby operating a spring toggle mechanism 46, 39 to turn the pivot 7 and reverse the tongues 5, 6. This movement of 31 brings a roller 29 into position to be actuated by a collector running on 4, thereby returning the parts to normal. After release of the chain 34, a spring returns 31 to normal, so that the chain can be released immediately after reversal of the tongues.
Patent GB-101785-A (GB)
Title: Improvements in Automatic Train Stopping Mechanisms.
IPC: B61L3/04
Filed: 1916-05-12
Abstract: 101,785. National Safety Appliance Co., (Assignees of Folker, H. S.). Oct. 12, 1915, [Convention date]. Valves controlled by pilot or relay valves; valve members and faces.-An automatic train-brake mechanism comprises a train pipe vent adapted to be gradually opened by a piston, supply of pressure fluid to which is controlled by a diaphragm valve actuated by the venting of the usual control pipe. A special manually-operated resetting- valve is provided. The train-pipe vent device comprises a tube 11, with a slit 15 and apertures 16, sliding in a cylinder 2, into which the trainpipe 14 opens and also in an extension A<1> of the cylinder A of the piston 3, to which the tube 11 is fixed. The piston chamber 4 is constantly charged with the pressure fluid by the main reservoir pipe 6, passage 7 and needle valve 8. The piston chamber 5 is normally at atmospheric pressure by way of a pipe 48 and whistle 49. The piston is thus maintained at the extreme right of the cylinder A. The pressure fluid is admitted to the chamber 5 to move the piston to the left, by the passage c and valve j operated by the double diaphragm h, i, as described in Specification 101,078. The pressure at the two sides d, g of the double diaphragm are normally equalized through orifices e, f in the valve stem and the diaphragm being of unequal area the valve is held closed. The control pipe 22 is connected by branch n to the diaphragm chamber g. When this pipe 22 is vented the double diaphragm h, i is deflected and pressing against the valve stem o, closes the equalizing-passage f, and unseats a valve to vent the chamber g by port q<4>. The deflexion of the diaphragm h, i opens the valve j, and the tube 11 is thus moved into the cylinder 2 and the aperture 16 uncovered to vent the train-pipe 14. The rate of travel of the piston is adjusted to secure a service venting of the pipe by the needle valve 8, past which the pressure fluid is forced from the piston chamber 5. The resetting of the mechanism is effected by a tandem valve 34 comprising a pair of spring pressed valves 30, 31 adapted to be unseated by a bell crank 46 and press-button 47 to permit passage of pressure fluid from pipe 6 to diaphragm valve chamber g by chambers 25, 27, 26 and pipes 22 n. The valve stems 36 fit loosely in the base of the chamber 27 to permit escape of air that may leak past the valves in closed position. The washers 40, 41 of the valves 30, 31 can be readily renewed by unscrewing the nuts 42, 43 after removal of the valves through the apertures in the casing closed by the screw plugs 34, 35.
Patent GB-430371-A (GB)
Title: Improvements in or relating to devices for automatically stopping sheet conveyors for printing or like machines
IPC: B65H7/10
Filed: 1934-03-03
Abstract: 430,371. Printing-machines. BACKHOUSE, H. T., 12, Melina Court, St. John's Wood, London. March 3, 1934, No. 6842. [Class 100 (ii)] Tripping-arrangements.-In a sheet-feeding device for printing or like machines in which sheets are fed by a conveying device in overlapped condition, or singly, trip mechanism is provided to stop the conveyer, and if desired the sheet-separating mechanism and the printing-machine should any sheet deviate laterally from its normal position. The sheets are fed from a pile over a roller 3 to a conveyer 4, and are passed through a gateway arranged close to the feed end of the conveyer and formed of rubber blocks 15 with inclined under surfaces secured to arms 10, 11 carried by a shaft 5 of square section which is supported in hollow bearings 6 in the manner of a knifeedge suspension. The arms 10, 11 are adjustably secured by screws 12 and clamps 13 to the shaft 5, and are normally set so as to permit a correctly positioned sheet to pass under the two surfaces 14 without contact. Should the sheet deviate to either side, or be positioned incorrectly, one of the arms 10, 11 is moved and the shaft 5 is likewise moved in a clockwise direction, thereby causing an arm 10 to allow a trip lever 17 to engage a catch 19 on an oscillating arm 20. This causes a stop mechanism of a mechanical or electrical kind to stop the conveyer and if desired the printing or like machine and the sheet-separating mechanism. In modified forms of the arms 10, 11, plane rubber rods may be used, or the lower inclined rubber surfaces 14 may be fitted with inward ledges for supporting the sheet edges.
Patent GB-382190-A (GB)
Title: Improvements in or relating to metal casks
IPC: B65D8/06
Filed: 1932-03-07
Abstract: 382,190. Metal casks. MœLLER, A., 10, Barmerstrasse, Schwelm, Westphalia, Germany. March 7, 1932, No. 6867. [Class 21.] A double-walled metal cask for beer &c. consists of an outer shell 4 with separate endpieces 6 and with a recess 7 at the centre to take a label, and an inner shell 9 made of two tubshaped halves connected by welded seams, and having a layer of enamel &c. on its inner side, the shells being secured together by a spacing ring 25 at the middle and by conical rings 10 which hold the inner shell either frictionally or by means of solder 11, 12 and are connected to the outer shell by a weld 14, consolidated by outer and inner rings 15, 16. Two bung-holes 17, 18 are provided, flanges 21, 22 being phosphor bronze soldered or welded to the inner cask, and the ring 25 being discontinuous at the bung-hole 18, the free ends being joined by a perforated ribbed plate. The ring 25 may be continuous, being then wider than in the Figure, its crown 26 forming part of the outer shell, and being if desired recessed circumferentially. Heat insulating material may be placed between the two shells, asbestos plates 30 being used between the heads ; the cavity between the shells may in addition be lined with polished tin foil gummed into place in order to reduce loss of heat by radiation. The outer shell may be slit longitudinally to facilitate assembly, the joint being welded over an inside plate or plates. The heads of the outer shell may be held by a folded joint instead of by welding.
Patent GB-330260-A (GB)
Title: Improvements in or relating to cloth guiders or feeders
IPC: D06C3/00
Filed: 1929-03-04
Abstract: 330,260. Wood, A., and Wood, G. March 4, 1929. Addition to 224,943. Feeding webs. - In a web-guiding device as described in the parent Specification, the guiding rollers at each side of the web are mounted together on a head which is angularly adjustable on a supporting bracket to vary the angle between the rollers and the edge of the web. Each pair of guiding rollers k, m, Fig. 3, is carried by a bracket a slidable on a guide rail b, Figs. 1 and 3, and provided with a boss a' through which a screwed rod c freely passes. The engagement of the boss with the rod c is effected by means of a plate d pivoted at one end and held in engagement with the screw by a removable pin f. Secured to a face plate a<2> on the bracket a and angularly adjustable thereon by a screw i and slot i<1> is a plate h carrying the shaft of the roller k and also a pillar h<2> to which is pivoted an arm l carrying the other roller m. The shaft of the roller m is secured by a nut in a slot formed in a square lug projecting from the arm l and guided in a projection j from the plate h. The rollers are urged apart by a spring and drawn together under the control of a feeler by electromagnets secured to the plate h co-operating with an armature o formed with or secured to the arm l.
Patent GB-1374028-A (GB)
Title: Cuttingmachines
IPC: B26D3/20
Filed: 1972-02-15
Abstract: 1374028 Cutting-machines T REIFENH€USER 15 Feb 1972 [15 Feb 1971] 6927/72 Heading A4C A knife mechanism M Fig. 1 for a cutting machine comprises two knife groups 22, 23  Fig. 2 each extending transversely to the direction P of material feed into the mechanism, each knife group comprising a plurality of parallel respective blades 25, 30 secured to respective carriers 24, 29 mounted on respective guide frames (28) (33), Fig. 3 (not shown) the blades of each group being disposed perpendicular to each other and the guide frames of each group being detachably connected to each other and/or the machine. Material to be cut is loaded into a supply container 12 and pushed by a piston 13 through the knife mechanism situated in a head housing 17 to form strips which are subsequently cut into cubes by a rotary severing knife 20. Carrier frame 24 comprises two guide rods 26 which are parallel to one another  and the blades 25, the blades lying between the rods. The rods themselves are guided within rod guides (27) of metal guide frame (28). Thus, knife group 22 and guide frame 28 form a unit in which the group 22 reciprocates. The knife group 23 corresponds in design and dimensions to knife group 22. It differs, however, in that a plurality of slots 34 are provided in the guide frame 33 in which guide strips 35, which support the material to be cut relative to group 22 and the severing knife 20, are releasably engaged and lie perpendicular to blades 30. The strips are of a thickness not greater than the thickness of blades 25, and are of such a depth that edges (35<SP>1</SP>) Fig. 4 (not shown) of the strips abut edges (25<SP>1</SP>) of the blades 25. Guide strips 35 comprise projections 36 on their opposite ends so as to fit into grooves on junction surface (37). The strips are also formed with slits (38) through which the blades 30 extend. The guide frames abut and support each other at the junction surfaces (37), and are connected to each other, and/or the machine, by screw bolts 39. Each guide frame does not have to be separated from the knife carrier frame for either sharpening of the blades or for cleaning. In operation, the two knife groups reciprocate at right angles to one another in directions S, T. Also, the holes for fixing pins of the blades 30 are offset with respect to the longitudinal axis of the blades so that edges (35<SP>11</SP>) of guide strips 35 and edges (30<SP>1</SP>) of blades 30 lie in a common plane with a surface of the guide frame 33.