baber/WOPTO huggingface dataset:
Patent GB-351932-A (GB)
Title: Improvements in or relating to cable and like winding mechanism
IPC: B65H59/38
Filed: 1930-03-18
Abstract: 351,932. Controlling variable-speed gearing; cable and like winding- apparatus. TAYLOR, H. G., 230, Friern Road, East Dulwich, London. March 18, 1930, No. 8728. [Class 80 (ii).] A winding drum or bobbin 1 is driven by gearing 2 controlled by the tension of the cable 3 to maintain that tension constant. The cable is led past guide pulleys 4, 5 over a jockey pulley 9 on a lever 10 adapted to move against a spring 10<1> to vary the amount of slip between the reaction member 2a of the epicyclic driving-gear 2 and brake shoes 8. If due to winding the tension increases, pulley 9 moves down and lever 22 to the left easing the grip of the shoes 8 so that the drum 1 is driven slower. Adjustment can be effected by a nut 32 acting on spring 30. In a modified arrangement, the lever linkage between pulley 9 and lever 22 is replaced by a simple hydraulic thrust-transmitting device. A Bowden wire might be used.
Patent GB-858451-A (GB)
Title: Improved tank gauging apparatus
Inventor: MORE JASPER
IPC: G01F23/42
Filed: 1959-03-13
Abstract: 858,451. Liquid-level indicators. LAMB PUBLICATIONS & INVENTIONS Ltd., J. March 13, 1959, No. 8743/59. Addition to 848,988. Class 123(1) [Also in Group XXV] A float member, for use with liquid-level indicating apparatus as described in the parent Specification so as to be readily transportable with the apparatus from tank to tank, comprises a sheet metal cylindrical float 1 having a conical head 2 and a vertical pair of sinuous slots 4 which are formed in opposite side-wall flats 3 and behind each of which is secured a channel 5 which is sealed from the interior of the float and receives a guide wire 9. The apparatus and the float 1, with a protective cylinder 13 secured to a closure cap 14 for the casing of the apparatus, are removably mounted on an ullage stand pipe 6. The protective cylinder 13 has opposed, vertical, side-wall slots 15 which, before introduction of the float 1 and the cylinder 13 into the stand pipe are aligned with the sinuous slots 4 in the float to receive, as the float and cylinder 13 are lowered into the stand pipe, a pair of inwardly directed studs 8 which are clamped to the upper end of the stand pipe 6 and support the guide wires 9. The latter are connected, at their lower ends, to weights 10 having recesses 11 which loosely receive the upturned ends of a cross-bar 12 secured to the bottom of the tank. The float 1 is vertically adjustable on a screw 22 carried by a member 16 for coupling the float 1 to a calibrated tape 7A so that compensation can be made when measuring the levels of liquids of varying specific gravity, an index mark being provided on the float to register with a scale 22A alongside one of the slots 15 in the protective cylinder 13. Means for locking the float during transportation comprises a block 23 which is slidable in a groove 24 in the closure cap 14 and is operable by a rod 25 which projects through the casing of the apparatus 7, Fig. 1 (not shown). A key-hole slot 26 in the block 23 has a cylindrical part and a slotted part which is recessed at 27 and when these parts are positioned below the coupling member they respectively permit and block the passage of the member 16 through the block. In the blocking position the recesses 27 engage beneath shoulders 18 on the coupling member 16.
Patent GB-766865-A (GB)
Title: Valve
IPC: F16K31/126
Filed: 1955-03-25
Abstract: 766,865. Valves. COLLINS, J. E. March 25, 1955 [Jan. 10, 1955], No. 8790/55. Class 135. A valve comprises a body 10, a sleeve 25 positioned in a bore to the valve body, a passageway 11 leading from the outside to the interior of the sleeve, outwardly-facing valve seats 35, 36 positioned in the sleeve, one on each side of passage-way 11, a stem 44 provided with shoulders 45, 46 which act as valve closure members and co-operate with the seat, and removable covers 75 over the two ends of the valve body. After a cover has been removed, the valve stem and the sleeve can be taken out of the body through that end. In the valve shown, the passage-way 11 constitutes an inlet and two outlet passage-ways 12, 13 communicating with the interior of the sleeve are also provided. The top cover carries a yoke 56 which, at its upper end, supports a diaphragm 62 which actuates the stem. Fluid under pressure for actuating the diaphragm is applied to the latter through an inlet 66 in a cover which is bolted over the diaphragm and forms a control chamber in co-operation therewith. The upper part of the stem is screwed into a plate 50 which abuts against the diaphragm 62 and the whole device is loaded by a spring 53 which abuts at its lower end against a washer 54 supported from the yoke 56 and, at its upper end, against a washer 52 carried by the upper end of the stem. The sleeve is packed as illustrated at 27.
Patent GB-783118-A (GB)
Title: Bearing assemblies for supporting rotary shafts
Inventor: BROADBENT DAVID CHARLES
IPC: F01D25/18
Filed: 1955-03-25
Abstract: 783,118. Stuffing-box substitutes. NAPIER & SON, Ltd., D. March 9, 1956 [March 25, 1955], No. 8861/55. Class 122 (5). [Also in Group XXXIV] A vertical shaft 11 is supported by a ball or roller bearing 21 in a housing 24 and oil supplied to the bearing is prevented from running down the shaft by an air current sealing- arrangement which includes a scavenge pump for drawing off the oil and air mixture. An annular trough 36 is attached to the housing 24 below the bearing 21 and extends inwardly so that its inner side wall, provided with inwardly-directed ridges 40, lies close to a sleeve 34 on the shaft 11 and forms a labyrinth seal therewith. An inverted cup member 35 is attached to the shaft below the bearing and its downwardly-extending side wall overlaps the wall of the trough with clearance. Oil delivered through a conduit 44 and restriction 45 passes through nozzles 47 to the bearing 21. The housing 24 is surrounded by an air-tight casing 48 in which are formed annular passages 49 and 50 communicating with a common chamber 51 to which compressed air is admitted through a passage 52. Compressed air from the passage 50 enters an annular chamber 54 from which it can leak downwardly through a labyrinth seal 41 and upwardly through labyrinth seal 40 to trough space 38. Similarly compressed air from the passage 49 leaks upwardly through a labyrinth seal 42 and downwardly through labyrinth seal 43 to an annular space 55 above the bearing 21. The oil/air mixture in the trough space 38 is drawn off by a scavenge pump through an aperture 56 into a chamber 57 and thence through a pipe 58. The invention is applied to the lower bearing 21 of a shaft 11 of a vertically mounted combustion turbine power unit for a helicopter, the general arrangement of which is shown in Fig. 1. The power unit comprises an axial flow compressor 10, a compressor turbine 12 and a power turbine 14 which drives the helicopter rotor 17. The upper bearing 22, shown in Fig. 3, is a modification of the bearing 21 in which compressed air is supplied to a space 82 between the upper surface of the power turbine disc 14 and a lower wall assembly 83 below the bearing 83. Some air leaks outwardly across the turbine disc for cooling it and escapes through a labyrinth seal 84, and some air leaks upwardly through labyrinth seals 70, 71. To prevent excess pressure building up beneath the bearing a by-pass consisting of a groove 92 in the shaft connects the interior of an inverted cup member 74 with a point above the bearing. Specification 761,442 is referred to in the Provisional Specification.
Patent GB-781512-A (GB)
Title: Improvements in or relating to paper composed of fibres of polytetrafluoroethylene and other closely related polymers
IPC: B01D39/20
Filed: 1955-03-25
Abstract: 781,512. Paper containing synthetic filaments; laminates. DU PONT DE NEMOURS & CO., E.I. March 25, 1955 [April 27, 1954], No. 8870/55. Classes 96 and 140. Paper is made by felting, e.g. on a papermaking machine, an aqueous pulp having suspended filaments of polymers or telomers or interpolymers of polytetrafluoroethylene (PTFE) and chlorotrifluoroethylene, and optionally, filaments of rock wool, asbestos, or flake mica, a wetting agent, e.g. an alkyl aryl polyethylene glycol, and an anti-foaming agent. The PTFE filaments may be prepared by shredding extruded rod as by rubbing, and may be reduced in a " micropulverizer " hammer mill. The paper thickness may be 0.02 to 0.10 ins. or more or felts about 2 to 2¢ in. thick may be made. It may have air permeability of 5 to 75 cu. ft. at a pressure differential of 0.05 in. of water. It may be sintered at 350‹ to 370‹ C. to improve its strength, or bonded by sintering to an impervious PTFE base, the resulting laminate being suitable for adhering to cloth, metal, or glass by an adhesive applied to its paper surface. Specification 642,269, [Group IV (a)], is referred to.
Patent GB-327840-A (GB)
Title: Improvements in processes and apparatus for producing mixtures of finely divided solids and gases
IPC: F23K3/00
Filed: 1929-03-20
Abstract: 327,840. Harper, H., Scott, R., and Imperial Chemical Industries, Ltd. March 20, 1929. Charging.-A process for producing mixtures of finely divided solids and gases especially applicable to the production of mixtures of powdered fuel and air or steam for injection into furnaces or gas generators consists in tumbling the powdered material in a rotary drum and subjecting it to an axial blast of gas, which carries away a predetermined quantity of the powder in suspension. Apparatus for carrying out the process is shown in Fig. 1 and comprises a rotary drum 1 having internal baffles 3 supplied with powdered material from a hopper 2. The material is lifted by the pockets formed between the baffles and drum and allowed to fall past the nozzle of the gas supply pipe 4 which is axially adjustable. The mixture of gas and material is discharged through the pipe 5. In applying the invention to water gas generators, water gas is supplied through the pipe 4 and steam is added to the mixture as it issues from the drum.
Patent GB-250271-A (GB)
Title: Improvements in aerial bombs
IPC: F42B12/44
Filed: 1926-04-06
Abstract: 250,271. Skoda Works, Plzen. April 6, 1925, [Convention date]. Drawings to Specification. Projectiles.-An aerial bomb is made with an explosive charge in front of, and separated by an air space from, an incendiary charge of thermoaluminic mixture which burns during flight and is scattered in a molten condition by the explosion of the explosive charge on impact by means of an instantaneous or delay-action percussion fuze. A metal may be added to the thermo-aluminic mixture. This mixture may be contained in a number of small packages to prevent its dispersion before it has burnt itself into a molten condition, if the bomb is dropped from a small height.
Patent GB-923871-A (GB)
Title: Infrared tracker
IPC: G01S3/787
Filed: 1961-03-13
Abstract: 923,871. Infra-red tracking apparatus. BARNES ENGINEERING CO. March 13, 1961 [March 21, 1960], No. 9084/61. Class 40 (7). In a tracker for target direction-finding comprising means such as mirrors 1 and 2 for focusing the infra-red or other E.M. radiation obeying optical laws or to a rotating reticle or chopper 3, through an aperture in a mask 4 and on to a detector 10, the reticle has a zone in which is disposed the aperture which zone is divided into adjacent areas 11 and 12 of different transmission characteristics, each area being defined by an arc of one of the two circles defining the zone and two straight lines which intersect each other on the other circle, and the differing transmission characteristics being due to the areas being either alternately opaque and transparent or being provided with bars of uniform width arranged symmetrically either side of a bisector of the angle contained by the straight lines, whereby rotation of the reticle cause the areas to amplitude modulate the radiation so that deviation of the target image from the centre of the aperture in one direction may be sensed by pulse width demodulation of the consequent detector signals and in a perpendicular direction by phase demodulation, means being provided for generating a reference signal in synchronism with the rotation of the reticle for the phase demodulation. If the adjacent areas 11 and 12 of the chopper are alternately opaque and transparent and the target image is in the centre of the aperture, the detector signal output will be a square wave. Departures of the image from the centre along a radius of the aperture shown in Fig. 2 will result in a departure from unity of the mark to space ratio of the detector signal and the sense and magnitude of this are used to produce a " vertical " error signal for tracking. Departures of the image from the aperture centre along an arc through the centre cause the phase of the detector signal to vary relative to a reference signal generated by means of regular intermittent obscurations 13 around the chopper (which may be at the periphery, as shown), and the magnitude and sense of these variations is used to derive a " horizontal " signal for tracking. The areas may be provided with bars for the employment of A.C. amplification of the detector signal and there may be (as shown in Fig. 2) unequal numbers of bars in the two sets of areas and these are separately amplified, Fig. 3 (not shown), prior to demodulation. The tracker may employ a second detector 9 in conjunction with a dichroic mirror 6 to operate on two radiation wavelengths, for which detector separate error signal derivation circuits may be employed or switching of circuits common to both detectors may be employed. Specification 898,205 and U.S.A. Specification 2,961,545 are referred to.
Patent GB-703821-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B43/00
Filed: 1952-04-09
Abstract: 703,821. Sewing-machines. CULLINANE, W. J. April 9, 1952, No. 9142/52. Class 112 A sewing-machine has a detachable needle bar which carries a thread spool and is releasably connected to the needleoperating mechanism of the machine. A detachable needle-bar, assembly for such a machine may comprise an end cover plate removably secured to the head of the machine and slidably supporting the needle-bar. Several needle-bars and looptakers may be mounted so as to be selectively connected to the machine. Chain-stitching; lock-stitching; threadspool holders; frames.-In the machine shown, the needle-bar 21 slides in a block 21a fixed on the inner surface of a faceplate 31 which is detachably secured to the head 4 of the machine frame by a pair of arms (not shown) engaging spring catches on the frame; the upper and lower edges of the head 4 are notched as at 30 to clear the needle-bar. A rod 17 reciprocated vertically in the head 4 by the usual disc crank 15 carries arms 19, 20 with cup-shaped recesses to receive the rounded ends of the needle-bar, the end of the lower arm being slotted into the recess to clear the needle; the upper arm 20 is resilient, so that the needle-bar is easily engaged with the arms 19, 20 and thus operated with the rod 17. The needle-bar carries a thread-spool 24 ,and a bracket 23 supporting a thread guide 26 and a tension device 25; a second tension device 33 is mounted on the plate 31. In a modification, the needle-bar carries an arm projecting through a slot in the faceplate 31 to receive the thread-spool, which is of the spring-controlled encased type so that the parts 23, 25, 26 are not required. Several needle-bars may be supported in a cage mounted for rotation on a vertical axis to bring them selectively into position for engagement with the carrier 31, and in a lock-stitch machine corresponding shuttles may be mounted in a similar cage connected to that carrying the needle-bars. Driving.-An electric motor 5 housed in an enlarged part of the standard of the machine, drives the needle-bar shaft and the loop-taker shaft 9 through separate belts from opposite ends of its shaft. Feed-dogs.-The work-engaging surface of the feed-dog is formed of rounded corrugations instead of sharp teeth, to avoid damage to delicate fabrics. Presser-feet.-The presser-foot is preferably transparent, so that the whole of the work is visible. Throat-plates.-The needle-bar aperture in the throat-plate is of key-hole shape, and lies between two feed-dog slots. Specification 669,913 is referred to.
Patent GB-571719-A (GB)
Title: Improvements in or connected with fuselages for aircraft
IPC: B64D13/04
Filed: 1941-07-21
Abstract: 571,719. Aircraft cabins. VICKERSARMSTRONGS, Ltd., and WALLIS, B. N. July 21, 1941, No. 9184. Drawings to Specification. [Class 4] A pressure cabin for an aircraft fuselage has its skin plating formed with overlapping riveted joints, the jointed plating being coated internally with an elastic self-setting substance capable of forming a continuous film, sealing all interstices, which does not flake under vibration or become brittle at the low temperatures encountered at high altitudes. A suitable coating is an aqueous emulsion of bitumen and rubber latex manufactured under the Registered Trade Mark " Trinasco." The cabin forms a separate compartment in the fuselage and access thereto is obtained through a fluidtight door on the hemispherical end of the cabin. Specification 562,301 is referred to.
Patent GB-693467-A (GB)
Title: Improvements in and relating to structures and structural elements
IPC: E04H12/08
Filed: 1948-09-13
Abstract: 693,467. Masts. HAMILTON, A. M. Sept. 7, 1949 [Sept. 13, 19481. No. 9188/51. Divided out of 693,423. Drawings to Specification. Class 20(i) A pole of tower comprises a closed thinwalled non-telescopic shell of metal or the like with connecting or mounting means at one or both ends, or two or more such shells rigidly interconnected, the shell or each shell having a gaseous filling exerting upon it an -internal pressure. Each shell may be in pressurized sections,. mechanically interconnected in the direc-- tion of structure height.
Patent GB-990360-A (GB)
Title: A cradle for fixing to caravan tow bars to carry a liquid gas container
IPC: B60R11/00
Filed: 1961-03-14
Abstract: 990,360. Body details. J. G. STEVENS. April 17, 1962 [March 14, 1961], No. 9219/61. Headings B7B and B7J. A cradle for a gas cylinder comprises upper and lower spaced rings 1, 2 held in spaced relationship by upright members 3 which are out-turned to form feet 4 by which it is secured to plate members 11, 12 bolted to a vehicle drawbar T. A spring-urged pin 5 has a part 6 to engage over the flange at the base of the cylinder and a lock 9 may pass through a hole in the pin 5 to prevent operation.
Patent GB-141340-A (GB)
Title: Improvements in clutches
IPC: F16D13/02
Filed: 1920-03-31
Abstract: 141,340. Schull, L. April 10, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Clutches, ratchet. -In clutches for use in eccentric presses, shears, and the like, a loose driving-pulley g has a friction clutch surface f engaged by a surface e on a nut d engaging a thread c on the driven shaft a Small initial friction between the surfaces e, f is produced by spring pins h, and relative retardation of the .shaft a tightens the clutch grip and drives the, shaft. A treadle-operated stop lever may be moved into the path of a lug on the nut d to stop the. nut and thus disengage the clutch.
Patent GB-790176-A (GB)
Title: Improvements in and relating to deadlocking mechanism for auxiliary door locks
IPC: E05B55/00
Filed: 1956-03-26
Abstract: 790,176. Sliding bolts. DEXTER INDUS TRIES, Inc. March 26, 1956 [March 28, 1955], No. 9305/56. Class 44 A lock comprises a housing 10 having a front aperture for a bolt 18 slidable therethrough, a retractor member 20 connected to the bolt and having a surface 23 at its rearward end transverse to the axis of sliding movement of the bolt, a radius arm 19 rotatably mounted in the housing transversely to the path of movement of the bolt and slidably engaging the transverse surface 23 on the retractor member 20, a deadlocking member 27 movably mounted on the retractor member and having a portion 37 extending beside and across the transverse surface 23 on the retractor member and also having a locking portion 29 whereby movement of the radius from 19 positions the deadlocking member 27 with respect to the retractor member 20, transverse abutment means 30 fixed with respect to the housing for engagement by the locking portion of the deadlocking member when the bolt is fully projected, the transverse surface 23 of the retractor member being formed to cause disengagement of the locking portion 29 on rotation of the radius arm 19 prior to the retraction of the bolt 18 beyond a position corresponding to the engagement of the locking portion 29 with the abutment means 30, and means 33 urging the locking portion towards the abutment means. As shown, the means 33 is a plate spring acting between a notch 35 and the member 27. A further spring 39 bears on the member 20 to prevent rattle and to positively position the bolt in its retracted and projected positions. The arrangement is such that rotation of the radius arm to retract the bolt 18 positively rotates the member 27 from the position shown in Fig. 1 to that shown in Fig. 3.
Patent GB-772491-A (GB)
Title: Improvements in and relating to insulating oils
IPC: C10M169/00
Filed: 1954-03-30
Abstract: An insulating oil, such as a transformer oil, having a reduced tendency to oxidize, comprises a mineral base oil having incorporated therein (1) a metal deactivator which is an aromatic amine of the formula <FORM:0772491/III/1> wherein R1, R2, R3 and R4 are simila or dissimilar, are selected from H and alkyl radicles containing up to 12 carbon atoms and together do not contain more than 24 carbon atoms, and X is NH2 of COOH and (2) an antioxidant which is phenyl a - or b  - naphthylamine.  Suitable aromatic amines are o  - phenylene diamine, anthranilic acid and their nuclear-substituted alkyl derivatives.  In the examples, insulating oils are described which contain mineral oil, phenyl b  - naphthylamine and o-phenylene diamine or anthranilic acid. For comparison purposes, insulating oils are described which contain mineral oil and phenyl b  - naphthylamine or anthanilic acid only, or mineral oil, phenyl b  - naphthylamine and one of disalicylal propylene diamine (added in toluene solution), di - salicylal ethylene diamine and zinc hexyl dithiophosphate.
Patent GB-701395-A (GB)
Title: Improvements in or relating to loudspeakers
IPC: H04R1/24
Filed: 1951-04-23
Abstract: 701,395. Loudspeakers. WHITELEY ELECTRICAL RADIO CO., Ltd., and WHITELEY, A. H. April 23, 1952 [April 23, 1951], No. 9399/51. Class 40 (4) [Also in Group XXXVIII] A moving-coil loudspeaker comprises two magnetic units having aligned central bores connected by a non-magnetic coupling 29 to form, together with a horn piece 31, an exponential horn into which separately-driven auxiliary diaphragms 12, 24, 25 feed intermediate and higher frequencies. The magnetic units are similarly constructed with the central pole-pieces 4 and 19 supported from the outer annular permanent magnets. 1, 16 by non- magnetic rings 5, 6, 20, 21. Diaphragms 12 and 25 have a central aperture and feed the horn through inclined holes 15 and 32 and a loading insert 30 in the rear bore brings the horn closer to an exponential law. Cross-over and attenuator networks are included in the feeding circuits to direct the received frequencies to the appropriate diaphragms.