US3238570A - Supporting and loading arm for the drawing mechanism op a spinning machine - Google Patents

Supporting and loading arm for the drawing mechanism op a spinning machine Download PDF

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Publication number
US3238570A
US3238570A US3238570DA US3238570A US 3238570 A US3238570 A US 3238570A US 3238570D A US3238570D A US 3238570DA US 3238570 A US3238570 A US 3238570A
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United States
Prior art keywords
locking
supporting
loading arm
lever
cover
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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
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English (en)
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    • 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
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/46—Loading arrangements
    • D01H5/50—Loading arrangements using springs
    • D01H5/505—Loading arrangements using springs for top roller arms

Definitions

  • the present invention relates to a supporting and loading arm for the drawing mechanism of a spinning machine which is provided with means which are easily accessible from above for adjusting the load and with a locking and relieving lever above the supporting and loading arm.
  • the load pressures to be exerted by the arm may be adjusted by means of one or more setscrews which are accessible from above.
  • the supporting and loading arm of any of these known devices is not equipped with a locking lever above the arm, but the means for locking the arm are provided either at the inlet or outlet side of the drawing mechanism and can only be released after the locking pawl is released.
  • such locking devices may be easily manipulated by the operators of the spinning machine when the load pressures are relatively small, it requires considerable physical strength to unlock such supporting and loading arms when the load pressures are very high.
  • locking and relieving levers are provided which extend along a considerable part of the length of the supporting and loading arms and permit the locking means to be easily released without first requiring the load to be relieved.
  • these locking and relieving levers have the disadvantage in the operative position of covering the means for adjusting the load pressures so that the latter are not accessible from above and the load pressures can therefore be adjusted only when the locking levers are tilted up and the supporting and loading arms are unlocked.
  • the adjustability of the load pressures is only of a limited value since it cannot be carried out in the operative position of the arm.
  • This object is attained according to the invention by covering the means on the supporting and loading arm for adjusting the load pressures by means of a locking and relieving lever having a locking means as shown by the patent to Stahlecker, 3,078,520, this lever consisting of at least two parts, one of which forms the actual locking member while at least one other part thereof forms a covering member which is designed so as to be pivotable or slidable away from the mentioned adjusting means or to be removable entirely from the supporting and loading arm so that the adjusting means are accessible from above and the load pressures may be adjusted while the machine is running.
  • FIGURE 1 shows a side view, partly in cross section, of a supporting and loading arm according to the invention which is provided with a two-piece locking and relieving lever, the two parts of which are connected to each other by a screw connection;
  • FIGURE 2 shows a similar view of a modification of the invention, in which the supporting and loading arm is connected to the locking part by a hinge pin and may be tilted upwardly after a connecting member has been loosened;
  • FIGURE 3 shows a similar view of another modification of the invention, in which the supporting and loading arm is equipped with a locking lever with apertures therein which are covered by a removable cover; while FIGURE 4 shows a similar view of still another modification of the invention, in which the supporting and loading arm is similar to the arm as shown in FIGURE 3, but in which the removable cover also serves to rein force the locking lever.
  • FIGURE 5 shows a side view partly in cross-section of the arrangement of the upper and lower rolls together with load springs therefor common to all embodiments of the invention.
  • FIGURE 1 shows the supporting rod 1 on which the supporting and loading arm 2 is pivotably mounted to permit it to be swung in the upward direction, and the locking part 3 of the locking and relieving lever 3, 3' by means of which the supporting and loading arm 2 may be locked to the clamping part 4.
  • the setscrews 5 by means of which the load pressure of the load springs 7, shown in FIGURE 5, may be adjusted are not accessible during the drawing operation since they are covered by the locking lever 3, 3'.
  • Further shown in FIGURE 5 are conventional upper rolls 8 supported by saddle means cooperating with the springs 7. While the foregoing conventional structure is shown in FIGURE 5 as being comprised in the FIGURE 1 species, it is to be understood that like structure is also employed in connection with the species of FIGURES 2, 3 and 4.
  • the device as above described is preferably employed if the adjustment is to be carried out primarily at the times of installation or thorough cleaning of the device, that is, at relatively rare occasions. If, however, the spinning material or the product to be drawn requires more frequent adjustments of the load pressure, it is more advisable to employ a device as illustrated in FIGURE 2.
  • the parts 23 and 23' are connected by a hinge with a hinge pin 27 and they are locked to each other by a locking screw 26. If the setscrews 25 are to be accessiwhich are covered by a cover 33'.
  • FIGURE 3 shows another embodiment of the invention in which the angular lever 33 which consists of a single piece of material is provided with apertures 38
  • the securing means means for this cover in this case the hook or hooks 39 and the holding spring 39', may be designed so as to permit the cover to be taken off only when the locking lever is swung upwardly. These securing means may be released by pressing by hand against the free end 39" of the holding spring 39' which forms a catch. Since for installing and removing the measuring roll, the locking and relieving lever must in any event be swung upwardly, the manipulation of these securing means against an accidental removal of the cover 33 does not render the entire operation more difiicult.
  • this lever may be modified as shown in FIGURE 4, by being reinforced by the cover 43'. On its front end, this cover 43' is bent around the locking lever 43 forming a socket like connection 49,
  • a snap spring 46 is provided which is clamped into an aperture in the locking lever.
  • cover 43' and its socket-like connection to the locking and relieving lever 43 the apertures 48 in this lever are covered and the lever itself is reinforced to such an extent that the reduction of its solidity due to the apertures 48 is compensated.
  • the setscrews may also be made accessible in other manners than those previously described, for example, by pivoting parts of the locking and relieving lever laterally about an axis which extends substantially vertically to the drawing plane.
  • the cover may also be made of plastic which is provided with elastic detents which engage into apertures in the locking lever. It-is also possible to provide slide members .of sheet metal or plastic which are laterally guided between projections or in recesses on the locking lever.
  • a supporting and loading arm for a drawing mechanism of a spinning machine having spring-loaded rolls and means for adjusting the load on said rolls accessible from above, a locking and relieving lever above said arm extending nearly over the whole length thereof for locking said loading arm in operative position, said lever comprising two parts, one of said parts forming a locking means for said-loading arm and the other of said parts forming a cover over said adjusting means, and means movably securing said cover to said lever, said securing means comprising means facilitating the selective movability of said cover to such an extent that said adjusting means may be actuated while said supporting and loading arm is in operating position during the operation of said spinning machine.
  • said securing means comprise a hinge connection between said cover and said locking means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US3238570D 1962-05-11 Supporting and loading arm for the drawing mechanism op a spinning machine Expired - Lifetime US3238570A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0079415 1962-05-11

Publications (1)

Publication Number Publication Date
US3238570A true US3238570A (en) 1966-03-08

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US3238570D Expired - Lifetime US3238570A (en) 1962-05-11 Supporting and loading arm for the drawing mechanism op a spinning machine

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US (1) US3238570A (he)
BE (1) BE632172A (he)
FR (1) FR1361626A (he)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104233533A (zh) * 2014-10-10 2014-12-24 常德市恒天纺织机械有限公司 一种板簧摇架加压机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823872A1 (de) * 1988-07-14 1990-01-18 Altstaetten Maschf Ag Trag- und belastungsarm fuer streckwerke

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB711425A (en) * 1951-04-04 1954-06-30 Tmm Research Ltd Improvements in supporting and weighting means for the upper rollers of textile drafting apparatus
GB748844A (en) * 1953-10-13 1956-05-09 Tmm Research Ltd Improvements in supporting and weighting means for the upper rollers of textile drafting appartus
US2920356A (en) * 1955-04-29 1960-01-12 Skf Kugellagerfabriken Gmbh Schrott
GB830614A (he) * 1955-06-30 1960-03-16
GB830991A (en) * 1957-08-29 1960-03-23 Tmm Research Ltd Improvements in the draw-boxes of textile combing machines
US3021574A (en) * 1957-08-23 1962-02-20 Skf Kugellagerfabriken Gmbh Textile drawing mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB711425A (en) * 1951-04-04 1954-06-30 Tmm Research Ltd Improvements in supporting and weighting means for the upper rollers of textile drafting apparatus
GB748844A (en) * 1953-10-13 1956-05-09 Tmm Research Ltd Improvements in supporting and weighting means for the upper rollers of textile drafting appartus
US2920356A (en) * 1955-04-29 1960-01-12 Skf Kugellagerfabriken Gmbh Schrott
GB830614A (he) * 1955-06-30 1960-03-16
US3021574A (en) * 1957-08-23 1962-02-20 Skf Kugellagerfabriken Gmbh Textile drawing mechanism
GB830991A (en) * 1957-08-29 1960-03-23 Tmm Research Ltd Improvements in the draw-boxes of textile combing machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104233533A (zh) * 2014-10-10 2014-12-24 常德市恒天纺织机械有限公司 一种板簧摇架加压机构

Also Published As

Publication number Publication date
BE632172A (he) 1963-09-02
FR1361626A (fr) 1964-05-22

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