US3293842A

US3293842A - Spindle mounted automatically doffable warp bobbin

Info

Publication number: US3293842A
Application number: US459066A
Authority: US
Inventors: Jr Morris M Bryan
Original assignee: Jefferson Mills Inc
Current assignee: Jefferson Mills Inc
Priority date: 1965-05-26
Filing date: 1965-05-26
Publication date: 1966-12-27
Anticipated expiration: 1983-12-27

Description

Dec. 27, 1966 M. M. BRYAN, JR 3,293,842

SPINDLE MOUNTED AUTOMATICALLY DOFFABLE WARP BOBBIN Filed May 26, 1965 INVENTOR Morris Bryan, Jr.

ATTORNEYS United States Patent 3,293,842 SPINDLE MOUNTED AUTOMATICALLY DOFFABLE WARP BOBBIN Morris M. Bryan, lira, Jeiferson, Ga, assignor to The .leflerson Mills, Inc., Jefferson, 6a., a corporation of Georgia Filed May 26, 1965, Ser. No. 459,066 1 Claim. (Cl. 57130) This invention relates to bobbins, and is more particularly concerned with a warp bobbin that is doffable by conventional means.

Although some bobbins are constructed so that they are easily doffable and replaceable by very simple mechanisrns, the warp bobbin is constructed and held in such fashion that conventional, simple mechanisms cannot remove the bobbin from its spindle. The warp bobbin is conventionally carried on a spindle to be wound; and, the spindle is rotated at high speed which requires that the bobbin be firmly seated, and sufficiently tight on the spindle that there would be no eccentric rotation of the bobbin with respect to the spindle. These requirements have caused past warp bobbins to be placed firmly on a spindle, and seated against a lower flange which makes them very diflicult to remove automatically.

There have been mechanisms to remove warp bobbins automatically, but these mechanisms have been extremely complicated and very expensive since they must firmly grasp a bobbin and pull it vertically until it has cleared the spindle.

The device of the present invention overcomes the above mentioned and other difliculties by providing means for leaving a space between the spindle flange and the bobbin so that a conventional plow can be used to doff the bobbin; yet, the bobbin is held firmly on the spindle so that there can be no eccentric rotation of the bobbin with respect to the spindle. The device of the present invention is extremely simple, and comprises a simple addition to a conventional warp bobbin so that there will be very little expense involved in manufacturing the warp bobbin in accordance with the present invention. It will thus be seen that the device of the present invention is very simple and inexpensive, yet very eflicient and quite durable.

These and other features and advantages of the present invention will become apparent from consideration of the following specification when taken in conjunction with the accompanying drawings in which:

FIG. 1 is an exploded view showing a conventional warp bobbin and the insert of the present invention, the bobbin and the insert being in diametrical cross-section;

FIG. 2 is a side elevational view showing a conventional spindle having a warp bobbin made in accordance with the present invention mounted thereon, the bobbin being in diametrical cross-section;

FIG. 3 is a side elevational view of a bobbin made in accordance with the present invention mounted on a conventional spindle, and showing a plow preparatory to removing the bobbin from the spindle; and,

FIG. 4 is a view similar to FIG. 3, the plow having partially removed the bobbin from the spindle.

Referring now more particularly to the drawings, and to that embodiment here chosen by way of illustration, there is a conventional warp bobbin of frusto-conical shape. Although the exact construction of the bobbin 10 is not illustrated, such bobbins are conventionally made of an impregnated paper, and are provided with metal ferrules to protect the ends of the bobbin. There is here shown a ferrule 11 at the lower, larger end of the bobbin 10, and a ferrule 12 at the upper, smaller end of the bobbin.

The insert 14, which is shown in FIG. 1 as exploded from the bobbin 10, is a hollow frusto-conical member which may be formed of paper, any one of various plastic materials, or the like. The function of the insert 14 is to reduce the interior diameter of a portion of the bobbin 10. This is shown more clearly in FIG. 2 which shows the insert 14 within the bobbin 10, and shows the bobbin 10 on a spindle 15.

It will be seen that the spindle 15 has an upper fru'stoconical portion 16 of somewhat less length than the bobbin 10; and, immediately below the frusto-conical portion 16, there is a flange 18 on which a conventional bobbin rests. A bobbin will contact the upper end of the frustoconical portion 16 of the spindle 15 in the area designated at 19; and, a bobbin will contact the lower end in the area designated at 20 of the frusto-conical portion 16 of the spindle 15.

It will be seen in FIG. 2 that the insert 14 is substantially in the area 20 of the frusto-conical portion 16 of the spindle 15 so that the insert 14 effectively reduces the internal diameter of the bobbin 10, and becomes the part of the bobbin that contacts the area 20. Since the portion 16 of the spindle 15 is frusto-conical, and the internal bore 21 of the bobbin 10 is frusto-conical, when the internal diameter of the bore 21 is reduced, the bobbin 10 will not go on the spindle 15 as far as it normally would. With conventional bobbins, the lower ferrule 11 will rest against the flange 18; but, since the internal diameter of the bobbin 10 is reduced by the insert 14, the bobbin 10 will not rest against the flange 18, but will stop, leaving a space 22 between the lower ferrule 11 of the bobbin 10 and the flange 18 of the spindle 15.

An understanding of the operation of the device can be had by referring to FIGS. 3 and 4 of the drawings. It will be seen that, with the bobbin 10 placed on the spindle 15, the space 22 provides an entrance for a plow 24. It should be understood that plows such as the plow 24 are well known in the art, and are simply camming members having a point 25 to be inserted beneath the bobbin 10, and a camming surface 26 up which the bobbin will ride. The camming surface 26 is of suflicient height that, when the bobbin has ridden up the entire height of the camming surface 26, the bobbin 10 will be removed from the frusto-conical portion 16 of the bobbin 15. In operation, the plow 24 is simply moved horizontally the point 25 being inserted into the space 22; and, as the plow 24 continues to move horizontally, the bobbin is moved vertically to be removed from the spindle 15.

While the invention has been here illustrated as including the insert 14, it will be readily understood that any other means for reducing a portion of the diameter of the bore 21 of the bobbin 10 would meet with equal success. A ring somewhat like an O-ring could be used, the bobbin could be formed with a portion of reduced diameter, or the entire wall of the bobbin 10 may be deformed inwardly to provide the portion of reduced diameter. The important feature is to provide some means for reducing a portion of the internal diameter of the bobbin 10 so that the interior of the bobbin 10 will engage the area 20 of the frusto-conical portion 1 6 of the spindle 15 soon enough to prevent the bobbin 10 from completely engaging the flange 18 in order to provide the space 22 between the ferrule 11 and the flange 18. The space 22 should of course be only sufiicient to allow entrance of the point 25 of the plow 24.

It will be seen that the particular device here shown is by way of illustration only, and is meant to be in no way restrictive; therefore, numerous changes and modifications may be made, and the full use of equivalents resorted to, without departing from the spirit or scope of the invention as defined by the appended claim.

I claim:

In a winding apparatus of the type having bobbins mounted on spindles and wherein said bobbins may be doffed from said spindles by an arcuate plow-type doffer, the improvement therein comprising at least one spindle having an upper frusto-conical portion for receiving a bobbin and a flange at the lower extremity of said portion, a frusto-conical bobbin mounted on said spindle having a longitudinal central bore therein for receiving'the upper frusto-conica1 portion of the spindle, said bobbin being formed from paper, a metal reinforcing ferrule secured to the base of the bobbin, the upper portion of said central bore of said bobbin being of such a diameter that the inner wall is in engagement with the upper end of the frustoconical portion of said spindle, the lower portion of said central bore of said bobbin being of larger diameter than any portion of said spindle above said flange, said lower portion having a hollow insert positioned near the base of said bobbin for reducing the inner diameter thereof and thereby maintaining said mounted bobbin in such a position on said spindle that said ferrule is spaced above said flange 1a sufficient distance to permit the leading edge of the arcuate plow-type doifer to pass between the ferrule on the base of said bobbin and the flange of said spindle.

References Cited by the Examiner UNITED STATES PATENTS 8/1874 Stone 2A246.21 X 357,066 2/1887 Colby 24246.2 X 851,774 4/1907 Pope -1 24246.21 2,236,178 3/ 1941 Kennedy 24246.21 2,615,650 10/1952 Betner et a1. 242-11832 2,961,822 11/1960 Prat 5753 FOREIGN PATENTS 480,189 2/1938 Great Britain.

FRANK I. COHEN, Primary Examiner.

GEORGE F. MAUTZ, Examiner.