US3600757A - Fallers for textile machines - Google Patents

Fallers for textile machines Download PDF

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Publication number
US3600757A
US3600757A US821716A US3600757DA US3600757A US 3600757 A US3600757 A US 3600757A US 821716 A US821716 A US 821716A US 3600757D A US3600757D A US 3600757DA US 3600757 A US3600757 A US 3600757A
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US
United States
Prior art keywords
insert
slot
faller
adhesive
pins
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
US821716A
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English (en)
Inventor
John K P Mackie
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.)
James Mackie and Sons Ltd
Original Assignee
James Mackie and Sons 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 James Mackie and Sons Ltd filed Critical James Mackie and Sons Ltd
Application granted granted Critical
Publication of US3600757A publication Critical patent/US3600757A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/02—Gill boxes or other drafting machines employing fallers or like pinned bars
    • D01H5/12—Details
    • D01H5/14—Pinned bars

Definitions

  • This invention relates to fallers for textile machines, particularly for screw gill boxes in which the fallers are fed along a main slide, are then transferred to a return slide and finally returned to the beginning of the main slide for the next cycle of operation.
  • fallers are subjected to considerable shock for each cycle of operation and many proposals have been made, intended to lighten the construction and to overcome the difficulties arising from fatigue.
  • the pins of the faller are mounted inan insert which in its turn is secured in aslot in the body of the faller. lfone or more pins becomes damaged the insert as a whole may be removed and replaced by a new assembly.
  • such inserts have been made of metal, for example brass, which has been brazed or soldered into the slot in the body of the faller.
  • the depth of slot is normally greater than that of the insert. If insufficient adhesive is used this has a tendency to drain downwardly and as a result may leave gaps along the length of the faller between the insert and the walls of the slot. If these gaps are left they will tend to collect dirt and lead to unsatisfactory operation of the faller but if an attempt is made to fill the gaps with more adhesive it is again extremely difficult to prevent the adhesive getting on top of the insert and around the pins. On the other hand if excess adhesive is used it will inevitably be squeezed out of the gap and on to the top of the insert.
  • an insert formed of synthetic plastic as just described is formed with a laterally extending flange at each side of the surface from which the pins extend so that when the insert is fitted in position in the body of the faller the two flanges together cover the width of the slot in the body and preferably extend over the whole of the width of the upper surface of the faller.
  • the insert itself is thus approximately T-shaped the cross limb of the T constituting the side flanges.
  • An excess of adhesive is used and as the insert is pressed into position the excess is squeezed out so as to pass between the narrowing space between each flange and the top of the body of the faller.
  • the side surfaces of the insert may be formed witha series of longitudinal ridges while the walls of the slot may be roughened for example, by shot blasting.
  • the sides or the slot itself it is preferably painted onto'the sides of the insert before the latter is fitted in position. As already mentioned any excess of adhesive can be removed from the sides of the faller without difficulty and similarly if the flanges of the insert project slightly beyond the sides of the faller the protruding portions can be removed at the same time.
  • the slot in the faller is closed at the bottom in which case the depth of the insert needs to be slightly less than that of the slot so that when the insert is pressed into position the flanges fit closely against the upper surface of the faller without any appreciable intervening adhesive. It is also possible, however, for the slot to pass right through the body of the faller and thus to be open at the bottom. With such a construction similar advantages are obtained but the securing of the insert in position is slightly more complicated.
  • FIG. 1 is an exploded perspective view with a central portion broken away of a faller in accordance with the invention for use in a screw gill box;
  • FIGS.2 and 3 are sectional views showing successive stages in the fitting in position of an insert carrying the pins of the faller.
  • the body of the faller shown in FIG. 1 is of normal construction comprising a steel bar 1 formed with a longitudinal slot 2 and heads 3 at each end for engagement with the feed mechanism of the gill box.
  • Pins 4 are held in an insert 5 molded from plastic such as nylon. Most conveniently the insert itself is molded round the butt ends of the pins 4 but it is also possible to fit the pins individually into holes drilled or molded in the insert.
  • the insert 5 is formed with a laterally extending flange 6 on each side so that when seen in section as in FIGS. 2 and 3 it is approximately T-shaped, with the flanges 6 forming the cross limb of the T.
  • the insert 5 is held within the slot 2 by means of an adhesive such as one of the epoxy resin type.
  • FIGS. 2 and 3 show successive stages in the fitting of the insert 5 in the slot 2.
  • the slot 2 is provided with an excess of adhesive shown as 8 and. the insert 5 together with the pins 4 is then pressed downwardly as shown in FIG. 2.
  • the sides of the insert may first be painted with a quantity of adhesive. Just before reaching the position of FIG. 2 adhesive is squeezed upwardly and starts to ooze out throughthe gap between the upper surface of the bar 1 and the lower surface of the two flanges. The excess then starts to run down the sides of the body as indicated at 9 in FIG. 2 and this process continues until the insert reaches the final position of FIG. 3 in which the flanges 6 are pressed tightly against the upper surface of the body 1 without any appreciable intervening adhesive. As shown in FIG. 3 the excessive adhesive which has been allowed to set has been removed to leave the finished product.
  • the adhesive is extruded in this direction and there is no tendency for it to run back over the upper surface of the flanges and between the pins 4.
  • the insert is held firmly in position by the presence of the adhesive 8 and the gripping action is enhanced by form ing the sides of the insert with longitudinal ribs 10 and also if required by toughening the walls of the slot for example by shot blasting.
  • a faller for a textile machine comprising an elongated faller body formed with a generally rectangular longitudinal slot in one of its surfaces, and an insert of synthetic plastic mounted in said slot and held therein by means of an adhesive, said insert comprising an elongate insert body of generally rectangular cross section extending downwardly in said slot, pins mounted in said insert, said pins extending downwardly into said insert body so as to be held firmly thereby and process of adhesive canbe applied relative to the amount which can' be accommodated when the insert is fully inserted into said slot, and said flanges prevent excess adhesive from getting to the pins as it is squeezed from said slot during insertion of said insert.
  • a faller according to claim 1 in which said flanges extend over the whole of the width of the surface of said faller in which said slot is formed.
  • a faller according to claim 1 in which said slot is closed at its bottom and the depth of said insert is slightly less than the I depth of said slot.
  • a faller according to claim 1 in which the sides of said I slot are formed with surface irregularities.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US821716A 1968-05-20 1969-05-05 Fallers for textile machines Expired - Lifetime US3600757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23940/68A GB1209694A (en) 1968-05-20 1968-05-20 Improvements relating to fallers for textile machines

Publications (1)

Publication Number Publication Date
US3600757A true US3600757A (en) 1971-08-24

Family

ID=10203788

Family Applications (1)

Application Number Title Priority Date Filing Date
US821716A Expired - Lifetime US3600757A (en) 1968-05-20 1969-05-05 Fallers for textile machines

Country Status (5)

Country Link
US (1) US3600757A (cs)
BE (1) BE733302A (cs)
DE (1) DE1924140A1 (cs)
FR (1) FR2008918A1 (cs)
GB (1) GB1209694A (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1786095B1 (de) * 1968-08-16 1971-12-09 Windmoeller & Hoelscher Verfahren und vorrichtung zum herstellen von aus mindestens zwei kunststoff folienbahnen bestehenden mehrlagigen schlauch abschnitten zur fabrikation von saecken oder beuteln
JPS4711549Y1 (cs) * 1969-01-27 1972-04-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860381A (en) * 1954-12-15 1958-11-18 Warner Swasey Co Faller bar and method of making same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860381A (en) * 1954-12-15 1958-11-18 Warner Swasey Co Faller bar and method of making same

Also Published As

Publication number Publication date
BE733302A (cs) 1969-11-20
DE1924140A1 (de) 1969-11-27
FR2008918A1 (cs) 1970-01-30
GB1209694A (en) 1970-10-21

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