US3576055A - Pintle wires for clipper seams - Google Patents

Pintle wires for clipper seams Download PDF

Info

Publication number
US3576055A
US3576055A US775570A US3576055DA US3576055A US 3576055 A US3576055 A US 3576055A US 775570 A US775570 A US 775570A US 3576055D A US3576055D A US 3576055DA US 3576055 A US3576055 A US 3576055A
Authority
US
United States
Prior art keywords
wire
pintle
wires
lead
sheath
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US775570A
Other languages
English (en)
Inventor
Bryan James Gisbourne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scapa Blackburn Ltd
Original Assignee
Scapa Dryers Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scapa Dryers Ltd filed Critical Scapa Dryers Ltd
Application granted granted Critical
Publication of US3576055A publication Critical patent/US3576055A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G3/00—Belt fastenings, e.g. for conveyor belts
    • F16G3/02—Belt fastenings, e.g. for conveyor belts with series of eyes or the like, interposed and linked by a pin to form a hinge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7018—Interfitted members including separably interposed key

Definitions

  • a pintle wire unit consists of two side-by-side pintle wires, a lead-in wire arranged in end-to-end disposition relative to the said pintle wires, and a coupling member whereby the pintle wires and lead-in wire are joined together.
  • the coupling member may comprise a open-ended sleeve with the opposed ends of which the pintle wires and lead-in wire are respectively engaged, and the wires may be secured to the coupling sleeve by means of an adhesive cement or by crimping the sleeve upon the wires.
  • the wires may be joined together in the requisite end-to-end disposition by forming a moulded body on the wires in the region of intended 10m.
  • clipper seam comprises a series of U-shaped wire clips, the hooked ends of which are clenched either in the extreme ends of the dryer felt or in the selvedge of narrow webbing attached thereto.
  • a pintle wire of circular cross section and of suitable material, is threaded through the aligned wire loops, so fonning a hinged joint and enabling the dryer felt to run in the manner of an endless belt.
  • the single pintle wire used in the above-described form of clipper seam tended to suffer rapid wear and consequent early disintegration due to the sliding friction between the wire loops, or some of them, and the pintle wire (here serving as a hinge pin) when subjected to continuous reversing flexure such as occurs when the dryer felt is running on a high-speed paper machine.
  • the wholly synthetic pintle wire described in our British Pat. No. 997,354 ha been found in practice to have a longer service life, other things being equal, than any other known construction of pintle wire.
  • the wire loops of this improved seam are of similar form to those of a single pintle wire seam but are slightly longer, thus to accommodate the two pintle wires in side-byside disposition in the plane of the dryer felt and within the elongated space or tunnel enveloped by the interleaved wire loops.
  • the twin pintle wire roll against each other and, as there is virtually no sliding friction between the pintle wires and the wire loops containing them, wear of the pintle wires is minimized and, consequently, this improved form of seam, known as the twin-wire clipper seam, is more reliable and has a longer service life than the single pintle wire type of seam.
  • twin-wire clipper seams While there twin-wire clipper seams have been shown to possess outstanding advantages when used for the purpose above described, extreme difficulty has hitherto been experienced in the manual operation of threading the two pintle wires through the tunnel formed by the aligned and interleaved wire loops whilst, at the same time, retaining the twin pintle wires in correct parallel alignment across the full width of the seam, that is to say, with the twin wires lying side by side in the plane of the dryer felt.
  • the object of the present invention is to provide an improved composite unit by which the twin pintle wires may be speedily and simultaneously threaded through the wire loops of the seam and, at the same time, disposed therein in accurate alignment, 8 above described, thereby ensuring the best possible action a a flexible seam.
  • the two pintle wires lying side by side and a lead-in wire are placed end to end and are coupled together by any suitable means to form a strong and convenient composite unit.
  • the adjacent ends of the twin pintle wires and of the lead-in wire are clamped in their correct relative positions in a mould into which resinous or similar curable or settable material is introduced to form, after curing or setting, an effective coupling of the three wires, the mould being adapted to form a body having an external shape designed to facilitate its easy passage through the tunnel formed by the wire loops.
  • the leading ends of the two pintle wires are coupled to the trailing end of the lead-in wire by means of a tubular sheath formed of metal, or alternatively of plastic material.
  • This sheath which forms the coupling, is shaped externally to facilitate its easy passage through the wire loops, and is conveniently made about 2 to 3 inches in overall length.
  • One end of the sheath is shaped to receive the twin pintle wires lying in mutual contact side by side, and the other end is shaped to receive the lead-in wire.
  • pintle wires are preferably, but not necessarily, of the all-synthetic construction described in our British Pat. No. 997,354, and their length exceeds by a reasonable margin the width of the dryer felt to which the seam is fitted.
  • the lead-in wire is preferably of rectangular cross section, and is fitted in the tubular sheath with its major axis in alignment with the twin pintle wires lying side by side.
  • the lead-in wire is preferably made of hardened and tempered spring steel, so that it tends to straighten out when released from the coiled form in which it is packed for transport.
  • the length of the lead-in wire is nonnally some 2 or 3 feet longer than the width of the dryer felt and its seam, and the leading end of the lead-in wire is suitably rounded off or pointed to enable it to pass smoothly through the tunnel formed by the wire loops.
  • the webbing is preferably of the tapered form described in our British Pat. No. 847,646.
  • the twin pintle wires and the lead-in wire form a composite unit which is particularly convenient for use by the paper-machine staff when fitting a new dryer felt.
  • the coil is first released from its temporary binding whereupon the lead-in wire straightens out by reason of its spring temper, and the twin pintle wires are straightened out by hand.
  • the leading end of the lead-in wire is then inserted into the tunnel formed by the wire hooks, and is propelled by hand until the leading end emerges from the other side of the seam.
  • the loose ends of the dryer felt are preferably supported in such manner as to be capable of being readily drawn together as the lead-in wire is pushed through.
  • the emerging end of the lead-in wire is then preferably fitted with a suitable form of clamp to fonn a handle by which the lead-in wire is pulled through the seam loops as the twin pintle wires are simultaneously drawn into their correct position within the seam.
  • the lead-in wire and the tubular sheath coupling will have been passed right through the seam from the starting to the finishing side, and the pintle wires may now be severed and the coupling and lead-in wire discarded.
  • the protruding ends of the twin pintle wires at each selvedge of the dryer felt may be knotted to prevent their moving endwise. Alternatively, the protruding ends may be laced into the fabric of the dryer felt or sewn thereto with equivalent effect.
  • the twin pintle wires will be wound on to a drum of some 9 to 12 inches diameter, followed by the lead-in wire, which will be restrained, in any suitable manner, from unwinding until required.
  • the drum may be enclosed in a cardboard box within which the drum is capable of rotating as the lead-in wire, followed by the coupled twin pintle wires, is manually drawn out of the box through a hole provided for that purpose.
  • the drum may be mounted on a temporary fulcrum, while the wires are unwound as they are threaded into the seam.
  • H6. 1 is a longitudinal section of a dryer felt with the twinwire clipper seam fitted to tapered webbings sewn to the ends of the dryer felt;
  • FIG. 2 is a similar longitudinal section of a dryer felt with the twin-wire seam fitted directly to the ends of the dryer felt;
  • FIGS. 3 and 4 show in side elevation and plan, and by way of example only, one form of the composite unit comprising a lead-in wire, a tubular sheath coupling and twin pintle wires;
  • FIG. 5 is a cross section taken on line A-A of FIG. 4 and shows the shape of the tubular sheath at the twin pintle wire end;
  • FIG. 6 is a cross section taken on line 3-8 of FIG. 4 and shows the shape of the tubular sheath at the lead-in wire end;
  • FIGS. 7 to 9 inclusive show the progressive stages in threading the twin pintle wires simultaneously by means of the com posite unit shown in FIGS. 3 and 4;
  • HG. 10 shows one manner in which the protruding ends of the twin pintle wires may be secured.
  • the ends of the 12, felt 10, 10, have attached to them, preferably by several parallel rows of machine sewing, the narrow webbing 13, 13 into the adjacent thicker selvedges of which the U-shaped wire clips 12, 12, are clenched by means of a suitable press.
  • the webbing 13 is preferably of tapered cross section as shown in H6. 1, and as described in our British Pat. No. 847,646.
  • the two rows of wire loops 12, 12 are interleaved and are then linked together by twin pintle wires ll, 11 for the purpose described in our British Pat. No. 1,114,602.
  • the two ends of the dryer felt l0, 10, form a but joint at 9, which joint 9 is behind the centerline of the scam in the direction in which the dryer felt runs, as indicated by the arrow.
  • FlG. 2 shows a variation in which the webbings are dispensed with, and the wire clips 12, 12, are clenched directly in the ends of the dryer felt 10, 10, the extreme ends of which felt may be strengthened by doping them with resin, or similar stiffening agent.
  • a trailing flap 14 formed from thin synthetic fabric, to prevent the wire clips from marking the paper which, on a paper-making machine, is pressed by the dryer felt against the peripheries of a succession of steam-heated dryer cylinders.
  • the trailing flap 14 is attached, by sewing, to the dryer felt ahead of the seam, the direction in which the dryer felt runs again being dictated by the arrow.
  • the twin pintle wires ll, 11, are shown in their correct relative positions, that is to say, lying side by side in the plane of the dryer felt.
  • the composite unit, the subject of the present application is shown in FIGS. 3 to 6 inclusive, FIGS. 3 and 4 showing the unit in elevation and plan respectively.
  • the tubular sheath coupling 15 consists, (in the embodiment illustrated), of a thin wall metallic tube with each half of its length separately swaged to a particular shape.
  • the shape or cross section is adapted to receive the twin pintle wires 11, 11, and at the other end, as shown by FIG. 6, to receive the lead-in wire 16, which wire 16 is rectangular in cross section and has its leading end suitably rounded or pointed.
  • the tubular sheath coupling assumes a smooth external profile well adapted to thread easily through the wire loops forming the clipper seam.
  • twin pintle wires 11, 11, and the lead-in wire 16 are retained in the swaged tubular coupling 15 by any suitable adhesive cement (alternatively the tube may be crimped or indented in a press for this purpose).
  • FIGS. 7 to 9 inclusive illustrate the practical use of the composite unit as a convenient aid to the hitherto difficult operation of threading the twin pintle wires simultaneously into the clipper seam, and at the same time maintaining their correct side by side disposition.
  • the dryer felt is usually supported on the dryer cylinders and felt rolls of the paper machine with the felt-tensioning roll slacked back. The loose ends of the dryer felt are then preferably laid flat on a temporary platform, or plank, to which the ends of the felt are tacked with the two series of wire clips in approximate alignment.
  • the rounded or pointed end of the leadin wire 16 is first inserted into one end of the seam and is then manually propelled through the tunnel formed by the wire loops until its leading end protrudes from the opposite end of the seam, as shown by FIG. 8.
  • This operation is greatly facilitated by the lead-in wire being of rectangular cross section steel, appropriately hardened and tempered and with its leading end suitably rounded or pointed.
  • the major axis, or width, of the rectangular section lead-in wire is only slightly larger than the overall diameter of a single pintle wire, consequently, the lead-in wire passes quite freely through the interleaved wire loops.
  • the protruding end of the lead-in wire 16, shown in FIG. 8, may be seized by a clamp or pliers to form a convenient grip or handle by which the lead-in wire 16, together with the coupling 15, may be pulled right through the seam, the twin pintle wires 11, 11 being simultaneously drawn into their correct final position in the seam, as shown by F lG. 9.
  • This latter operation may be assisted by concurrent application of propelling force applied manually to the pintle wires adjacent to their entering end of the seam.
  • the coupling 15 and the lead-in wire 16 may be cut away (as shown in FIG. 9) and discarded, after which the protruding ends of the twin pintle wires may be secured in any suitable manner as, for example, by bending them so as to lie parallel to the dryer felt selvedges to which they may be secured by hand whipping, as shown by FIG. 10.
  • the invention is not restricted to the exact features of the embodiment hereinbefore illustrated since alternatives will readily present themselves to one skilled in the art.
  • the individual wires are secured in position by means of a suitable adhesive cement, it may be found convenient mechanically to secure the wires to the sheath.
  • the body defined by the cured or set material will be shaped to facilitate the passage thereof through the interleaved clips.
  • a pintle wire unit comprising two side by side pintle wires, a lead-in wire arranged in end-to-end disposition relative to said two pintle wires, and a rigid coupling element intermediate the pintie wires and the lead-in wire in which the ends of said pintle wires and lead-in wire are secured.
  • a pintle wire unit as claimed in claim 1 wherein the coupling element comprises a tubular sheath adapted to receive the pintle wires and the lead-in wire into engagement therewith at respective opposed ends thereof, the said sheath being adapted to maintain the said wires in engagement therewith.
  • a pintle wire unit as claimed in claim 1 wherein the coupling means comprises an open-ended sheath of which one end is shaped to receive the side by side pintle wires and the other to receive the lead-in wire, the said sheath being adapted to maintain the said wires in engagement therewith.
  • a pintle wire unit comprising two side by side pintle wires, a lead-in wire arranged in end-to-end disposition relative to the said pintle wires, an open-ended coupling sleeve between the pintle wires and the lead-in wire, the pintle wires being engaged with one end of such coupling sleeve and the lead-in wire being engaged with the other end of such sleeve, the said sleeve being adapted to maintain the said wires in engagement therewith and having a shaped outer configuration thereto to facilitate the passage thereof through the interleaved loops of a clipper seam.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Wire Processing (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
US775570A 1968-07-12 1968-10-02 Pintle wires for clipper seams Expired - Lifetime US3576055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33441/68A GB1187318A (en) 1968-07-12 1968-07-12 Pintle Wires for Clipper Seams

Publications (1)

Publication Number Publication Date
US3576055A true US3576055A (en) 1971-04-27

Family

ID=10352998

Family Applications (1)

Application Number Title Priority Date Filing Date
US775570A Expired - Lifetime US3576055A (en) 1968-07-12 1968-10-02 Pintle wires for clipper seams

Country Status (8)

Country Link
US (1) US3576055A (fr)
AT (1) AT288849B (fr)
BE (1) BE724269A (fr)
CH (1) CH478953A (fr)
DE (1) DE1808995A1 (fr)
FR (1) FR1596323A (fr)
GB (1) GB1187318A (fr)
NL (1) NL6900126A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0712958A3 (fr) * 1994-11-15 1997-05-14 Albany Int Corp Fils de jonction du type composite
US5890266A (en) * 1994-02-02 1999-04-06 Mato Maschinen-Und Metallwarenfabrik Curt Matthaei Gmbh & Co. Kg Connecting pin for belt fasteners and the like
US20040143937A1 (en) * 2003-01-25 2004-07-29 Allen Richard F. Clipper seams
US20040231817A1 (en) * 2003-05-22 2004-11-25 Glenn Kornett Method and device for stabilizing unseamed loops
US6840700B1 (en) * 1998-07-30 2005-01-11 G. Rau Gmbh & Co. Kg Mechanical connecting element
US20080263966A1 (en) * 2007-04-27 2008-10-30 Triodetic Holdings Inc. Continuous curve panel structure
WO2020076533A1 (fr) * 2018-10-10 2020-04-16 Astenjohnson, Inc. Procédé d'assemblage d'une couture et fil de tête pour celui-ci
WO2020076534A1 (fr) * 2018-10-10 2020-04-16 Astenjohnson, Inc. Outil d'insertion d'aiguille

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4806208A (en) * 1987-10-14 1989-02-21 Asten Group, Inc. Method of seaming a seamed felt on a papermaking machine with oppositely tapered pintle elements
DE20218672U1 (de) 2002-12-03 2003-03-13 Schwinn, Günter, 65929 Frankfurt Einziehhilfen für Schließdrähte von Papiermaschinenbespannungen in der Naßpartie

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US433791A (en) * 1890-08-05 Coil-clasp
US2879580A (en) * 1956-12-07 1959-03-31 Hindle Thomas Flexible hinges
US2883734A (en) * 1955-11-10 1959-04-28 Draper Brothers Company Paper-maker's wet felt
US3335844A (en) * 1965-07-07 1967-08-15 Scapa Dryers Ltd Hinge seams for dryer felts and the like
US3376170A (en) * 1964-02-27 1968-04-02 Thomas & Betts Corp Thermocouple junctions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US433791A (en) * 1890-08-05 Coil-clasp
US2883734A (en) * 1955-11-10 1959-04-28 Draper Brothers Company Paper-maker's wet felt
US2879580A (en) * 1956-12-07 1959-03-31 Hindle Thomas Flexible hinges
US3376170A (en) * 1964-02-27 1968-04-02 Thomas & Betts Corp Thermocouple junctions
US3335844A (en) * 1965-07-07 1967-08-15 Scapa Dryers Ltd Hinge seams for dryer felts and the like

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5890266A (en) * 1994-02-02 1999-04-06 Mato Maschinen-Und Metallwarenfabrik Curt Matthaei Gmbh & Co. Kg Connecting pin for belt fasteners and the like
EP0712958A3 (fr) * 1994-11-15 1997-05-14 Albany Int Corp Fils de jonction du type composite
AU690293B2 (en) * 1994-11-15 1998-04-23 Albany International Corp. Combination-type seaming pintles
CN1046776C (zh) * 1994-11-15 1999-11-24 阿尔巴尼国际公司 复合式缝合枢栓
JP3162277B2 (ja) 1994-11-15 2001-04-25 アルバニー インターナショナル コーポレイション 複合型シーム用ピントル
US6840700B1 (en) * 1998-07-30 2005-01-11 G. Rau Gmbh & Co. Kg Mechanical connecting element
WO2004067996A1 (fr) 2003-01-25 2004-08-12 Madison Filter 981 Limited Ameliorations apportees a des coutures a crochets
US20040143937A1 (en) * 2003-01-25 2004-07-29 Allen Richard F. Clipper seams
US20040231817A1 (en) * 2003-05-22 2004-11-25 Glenn Kornett Method and device for stabilizing unseamed loops
JP2006529008A (ja) * 2003-05-22 2006-12-28 アルバニー　インターナショナル　コーポレイション 継ぎ合わされていないループを安定化させる方法及び装具
US7393434B2 (en) * 2003-05-22 2008-07-01 Albany International Corp. Method and device for stabilizing unseamed loops
US20080263966A1 (en) * 2007-04-27 2008-10-30 Triodetic Holdings Inc. Continuous curve panel structure
WO2020076533A1 (fr) * 2018-10-10 2020-04-16 Astenjohnson, Inc. Procédé d'assemblage d'une couture et fil de tête pour celui-ci
WO2020076534A1 (fr) * 2018-10-10 2020-04-16 Astenjohnson, Inc. Outil d'insertion d'aiguille
CN111742102A (zh) * 2018-10-10 2020-10-02 艾斯登强生股份有限公司 销轴插入工具
EP3759277A4 (fr) * 2018-10-10 2021-12-01 Astenjohnson International, Inc. Outil d'insertion d'aiguille
US11332879B2 (en) 2018-10-10 2022-05-17 Astenjohnson International, Inc. Pintle insertion tool

Also Published As

Publication number Publication date
AT288849B (de) 1971-03-25
DE1808995A1 (de) 1970-02-19
GB1187318A (en) 1970-04-08
BE724269A (fr) 1969-05-02
NL6900126A (fr) 1970-01-14
CH478953A (de) 1969-09-30
FR1596323A (fr) 1970-06-15

Similar Documents

Publication Publication Date Title
US3576055A (en) Pintle wires for clipper seams
US3309790A (en) Light-weight dryer felt seams
JPH01132894A (ja) 編地のピンタイプ継目の閉成方法及びその方法を実施するピントルユニット
US3972105A (en) Seam gripping device
US2228926A (en) Fastener for transmission belts and the like
NO840291L (no) Leddbaand.
US2077891A (en) Means for joining the ends of drier felts and the like
NO167107B (no) Apparat for maaling av varmespenninger i trykkdeler.
NO120386B (fr)
US4267226A (en) Fabric web and a method of making a fabric web for a dewatering machine
US3991631A (en) Woven endless belt of a spliceless and Mobius strip construction
US2311792A (en) Clothesline tightener
DE1461113A1 (de) Trocknerbaender
US2626762A (en) Bobbin device
US3653097A (en) Means for connecting together the ends of bands of fabric
US2066974A (en) Paper maker's drier felt
US2373393A (en) Yarn winding frame
US4144911A (en) Connector components
US1411602A (en) Endless belt
US2035950A (en) Thermal insulating tape
GB1598698A (en) Clipper seam for joining fabric ends
US1300881A (en) Method of making lace hair-nets.
US2103534A (en) Hair curler
US377937A (en) Driving-band for spindles
RU2186853C1 (ru) Способ изготовления меховой нити