US2922597A

US2922597A - Pendulous bobbin holder for spinning frames and the like

Info

Publication number: US2922597A
Application number: US639776A
Authority: US
Inventors: Raymond F Banfield; Henry E Griemsmann
Original assignee: Bendix Aviation Corp
Current assignee: Bendix Aviation Corp
Priority date: 1957-02-12
Filing date: 1957-02-12
Publication date: 1960-01-26
Anticipated expiration: 1977-01-26

Description

1 W a 5 m 2 s 2 a m 2 m s 2 Jan. 26, 1960 R. F. BANFIELD ET AL PENDULOUS BOBBIN HOLDER FOR SPINNING FRAMES AND THE LIKE med Feb 12, 1957 Le/7267mm ATTORNE 2 Jan. 26, 1960 R. F. BANFIELD ET AL 2,922,597

PENDULOUS BOBBIN HOLDER FOR SPINNING FRAMES AND THE LIKE 2 Sheets-Sheet 2 Filed Feb. 12, 1957 QLVENTORS WITNESS: wfifff m,-

United States Patent PENDULOUS BOBBIN HOLDER FOR SPINNING FRAMES AND THE LIKE Application February 12, 1957, Serial No. 639,776

A V 4 Claims. (Cl. 242-130.2)

The present invention relates to a .pendulous bobbin holder for spinning frames and the like, and more particularly to that type of holder in which the bobbin is retained on the holder by a catch or latch carried by the holder which is movable into and out of position to engage the interior bore of the bobbin.

It is an object'of the present invention to provide a novel bobbin holder of the above type which is positive and reliable in action and simple and economical in construction.

It is another object to provide such a device which is adapted for use with a wide range of sizes and conformation of bobbins. I

It is another object to provide such a device which is readily interchangeable with present commercial types of bobbin holder.

Further objects and advantages will be apparent from the following description taken in connection with the accompanying drawings in which:

Fig. 1 is a vertical substantially mid-sectional view of a preferred embodiment of the invention showing the parts in the positions assumed when a bobbin is mounted on the holder;

Fig. 2 is a detail of the bobbin holder taken on a section substantially at right angles to the section plane of Fig. 1;

Fig. 3 is a section taken substantially on the line 3-3 of Fig. 2;

Fig. '4 is a bottom view of the bobbin holder;

Fig. 5 is a detail of the rotatable latch member;

Fig. 6 is a section taken substantially on the line 6--6 of Fig. 5; and

Fig. 7 is an exploded view in perspective showing the operating elements of the bobbin holder separated while maintaining their relative orientation.

In Fig. 1 of the drawing there is illustrated a hollow tubular body 1 which is arranged to be suspended from ,a creel board 2 of a spinning frame or the like by means of a universal bearing indicated generally by numeral 3. Since this supporting structure is similar to present commercial practice as illustrated for instance in the patent to Sayles et al. 2,217,922, further description thereof is deemed unnecessary.

The body 1 is arranged to enter freely in the bore 4 of a bobbin 5, and adjacent its lower end is provided with axially extending diametrically arranged slots 6. An oblong latch member 7 is rotatably mounted in the body 1 by means of a pin 8 in position such that when the latch is rotated to have its major dimension in the horizontal plane as shown in Fig. 1, the ends of the latch project through said slots 6, and are thereby adapted to engage the internal shoulder 9 of the bobbin 5 and thereby support the bobbin on the holder. latch 7 is so formed that when it is rotated to the position in which its major dimension is vertical, the latch does not project beyond the outer surface of the body 1 of the bobbin holder, whereby the bobbin may be moved freely relative to the bobbin holder.

, wise direction as viewed in Fig. 1.

The

Means for rotarily indexing the latch member from one such position to the other is provided comprising a pawl member 11 in the form of a strip of elastic material such as spring steel which is mounted to slide axially in the interior of the body 1, and has a tooth 12 projecting laterally therefrom in position to engage in holes 13 formed in the latch member 7 concentrically about its axis and spaced degrees from each other.

The lower end of the pawl 11 has a tongue 16 projecting laterally therefrom to'bear slidably on the interior of the body 1 as best shown in Fig. 4. The upper end of the pawl member 11 is slotted for the reception of a cross pin 15 which extends through diametrically arranged axial slots 16 in the body and is fixedly mounted in a sleeve 17 slidably mounted on the exterior of the body 1. Sleeve 17 has a tapered flange 18 adapted to engage the upper end of the bobbin 5 as shown in Fig. 1. A spring member 19 within the body 1 bears at its upper end against lower retainer 20 of the bearing 3, and at its lower end on the cross pin 15 to thereby urge the sleeve 17 toward its lower-most position as defined by the lower ends of the slots 16.

. The tooth 12 of the pawl member 11 is formed as shown to make positive engagement with the Walls of the holes 13 of the latch on upward movement of the pawl member and thereby rotate the latch in a clock- Tapered grooves 21 are preferably formed in the side of the latch member 7 in order to facilitate the downward return movement of the tooth 12 of the pawl member without substantial tendency to rotate the latch member backward.

Means for resisting backward rotation of the latch and for holding it in indexed position is provided comprising a detent member 22 (Figs. 2 and 7) which is also in the form of a strip of elastic material mounted within the body of the bobbin holder. At its lower end the detent member is provided with a tongue 23 projecting therefrom and bearing on the interior of the body 1, and at its upper end it is formed with a reverse bend which provides a portion 24 bearing on the in terior of the body 1, and a terminal projection 25 hearing on the opposite side of the interior of said body. The portion 25 is bent substantially horizontal and extends through a slot 26 in the pawl member 11. As best shown in Fig. 7, the portion 25 is notched as shown at 27 where it passes through the slot 26 whereby it forms a guide for the pawl 11 in its vertical movement.

The detent 22 is provided with a projection 28 so located as 'to enter one of the holes 13 in the latch in each of its indexed positions and thereby resist overtravel or backward rotation of the latch member.

As best shown in Figs. 1 and 5, the holes 13 in the latch member are so arranged that when they are in position to be engaged by the tooth 12 of the pawl member they are farther from the horizontal medial line of the latch than to the Vertical medial line. This arrangement has been found to facilitate the indexing movement of the latch by the pawl 11.

The pawl member is provided with a slot 29 adjacent its lower end through which the pivot pin 8 for the latch passes, whereby said pin performs a guiding and locating function for the latch. Preferably the slot is widened at an intermediate portion as shown at 31 in order to permit the latch to have some lateral movement to accommodate the tooth 12 to the a-rcuate travel of the holes 13 in the latch.

It has been found desirable to permit the sleeve 17 to have some freedom and movement independent of the pawl 11. For this purpose, the upper end of said pawl is slotted as shown at 32 for the passage of the pin 15 therethrough, and a second spring 33 is provided which also bears against the lower retainer 20 of the bearing 3, and engages a shoulder 34 at the upper end of the pawl. This arrangement permits the sleeve 17 to move down and clamp the bobbin against the latch member 7 after the pawl has reached the end of its downward stroke as defined by the length of the slot 29 in the pawl.

In operation, when the bobbin holder is not in use, the latch 7 is positioned with its major dimension vertical so that it does not project from the holder. When a bobbin is applied to the holder, the upper end of the bobbin engages the sleeve 17 and moves it upward, and when the pin engages the upper end of the slot 32 in the pawl 11, further movement raises the pawl and causes the tooth 12 thereof to rotate the latch 7 by engagement in a hole 13. The latch is thus moved a quarter of a revolution bringing it into the position illustrated in Fig. 1. When the bobbin is released by the operator it rests on the latch and is maintained in centered position by engagement between the latch and the inclined shoulder 18 of sleeve 17 which is pressed down on the bobbin by spring 19. At the same time the pawl 11 is returned to its normal position by spring 33.

Removal of the bobbin is accomplished by a second indexing movement of the latch by raising the bobbin on the holder. The sleeve 17 is thus caused to actuate the pawl 11 to rotate the latch to its vertical position whereupon the bobbin is free to be removed.

Although but one form of the invention has been shown and described in detail it will be understood that changes may be made in the design and arrangement of the parts without departing from the spirit of the invention.

We claim:

l. A pendulous bobbin holder for spinning frames or the like comprising a hollow cylindrical body having a pair of diammetrically arranged axially extending slots, means for rotatably suspending said body from a creel board, an oblong latch member pivoted for rotation on a horizontal axis in said body into and out of position to project through said slots, and means for indexing said latch comprising a pawl member having limited axial sliding movement in said body and having a tooth adapted to engage and rotate the latch, a detent member fixedly mounted in said body having a projection adapted to engage the latch and resist backward rotation thereof, a collar mounted for limited sliding movement on the exterior of the body, lost motion means connecting the collar to the pawl to impart upward axial movement from the collar to the pawl after a predetermined free upward movement of the collar, spring means urging the collar toward its lowermost position and separate spring means urging the pawl toward its lowermost position, the latch member being provided with four quadrantally located holes in which the tooth of the pawl and the projection of the detent engage on opposite sides of the latch, and with tapered grooves on its surface connecting with said holes to facilitate backward movement of the tooth of the pawl member out of said holes.

2. A pendulous bobbin holder for spinning frames or the like comprising a hollow cylindrical body having a pair of diametrically arranged axially extending slots,

means for rotatably suspending said body from a creel 6 board, an oblong latch member pivoted for rotation on a horizontal axis in said body into and out of position to project through said slots, and means for indexing said latch comprising a pawl member having limited sliding movement in said body and having a tooth adapted to engage and rotate the latch, a detent member fixedly mounted in said body having a projection adapted to engage the latch and resist backward rotation thereof, a collar mounted for limited sliding movement on the exterior of the body, lost motion means connecting the collar to the pawl to impart upward axial movement from the collar to the pawl after a predetermined free upward movement of the collar, spring means urging the collar toward its lowermost position, and separate spring means urging the pawl toward its lowermost position; in which said detentmember is in the form of a strip of spring material extending axially of the body of the holder and having bent portions at its ends bearing on the interior of said body.

3. A bobbin holder as set forth in claim 2 in which the pawl member is in the form of a spring strip having a bent portion at its lower end bearing slidably on the interior of the body of the bobbin holder; and the upper bent terminal portion of the detent member is provided with means slidably receiving and guiding said pawl.

4. A pendulous bobbin holder for spinning frames or the like comprising a hollow cylindrical body having a pair of diammetrically arranged axially extending slots, means for rotatably suspending said body from a creel board, an oblong latch member pivoted for rotation on a horizontal axis in said body into and out of position to project through said slots, and means for indexing said latch comprising a pawl member having limited axial sliding movement in said body and having a tooth adapted to engage and rotate the latch, a detent member fixedly mounted in said body having a projection adapted to engage the latch and resist backward rotation thereof, a collar mounted for limited sliding movement on the exterior of the body, lost motion means connecting the collar to the pawl to impart upward axial movement from the collar to the pawl after a predetermined free upward movement of the collar, spring means urging the collar toward its lowermost position and separate spring means urging the pawl toward its lowermost position the latch member being provided with four quadrantally located holes in which the tooth of the pawl and the projection of the detent engage on opposite sides of the latch; in which the pawl is'in the form of a spring strip having an axially extending slot at an intermediate portion of its length, and including further a pin fixedly mounted in the body acting as the pivot for the latch and traversing the slot in the pawl to also act as a guide for the pawl, said slot having a curved wall permitting lateral movement of the pawl to allow the tooth of the pawl to conform to the arcuate movement of the holes in the latch during its indexing movement.

References Qited in the file of this patent UNITED STATES PATENTS 502,269 Baldwin Aug. 1, 1893 526,448 Karschner Sept. 25, 1894 1,479,553 Parlow Jan. 1, 1924 2,095,518 Casablancas Oct. 12, 1937 2,408,674 Noguera Oct. 1, 1946 FOREIGN PATENTS 653,228 Great Britain May 9, 1951