US2946537A

US2946537A - Bobbin holder

Info

Publication number: US2946537A
Application number: US594450A
Authority: US
Inventors: Jr Agnew H Bahnson
Original assignee: Wachovia Bank and Trust Co
Current assignee: Wachovia Bank and Trust Co
Priority date: 1956-06-28
Filing date: 1956-06-28
Publication date: 1960-07-26
Anticipated expiration: 1977-07-26

Description

July 26, 1960 A. H. BAHNSON, JR

BC'BBIN HOLDER 2 Sheets-Sheet 1 Filed June 28, 1956 lib r a W7 I a 2 m f. m a u F A w -HWN1J l Gttbmego July 26, 1960 A. H. BAHNSON, JR 3 BOBBIN HOLDER Filed June 28, 1956 2 Sheets-Sheet 2 attorneg hired rates noBsrN HOLDER I V Filed June 28, 1956, Ser. No. 594,450

4 Claims. emu-130.2

The present invention relates to textile processing machinery such as spinning frames, drawing frames and the like wherein a plurality of textile strands are processed simultaneously, the strands being stored on bobbins mounted on the machine.

Moreparticularly, the invention relates to an improved construction for a bobbin holder of the suspension type, the holder comprising a pair of spring loaded jaws over which the end of the tubular bobbin is forced to theon position, these jaws including offset or shoulder portions which cooperate with and press outwardly against complementary shoulder portions in the bore of the bobbin thereby to support the bobbin in place on the dependent holder.

In accordance with a further feature of the invention, the spring loading of the jaws of the holder is established by a hairpin type of spring which is readily removable from the jaws for replacement with a similarly configured spring but which has a different spring characteristic in order to establish a correcpondingly difierent spring loading characteristic on the jaws. The different alternatively usable springs also establish different distances'between the jaws themselves. Such construction, providing a readily exchangeable loading spring is advantageous in that it enables the spring loading ofthe holder to be readily adapted for supporting different sizes and weights of bobbins or packages such asap 8 r4; a l X 5, or a 12 x 6 /2, with the right amount of spring tension so that the bobbin will be suspended safely from the holder and yet without exerting such a strong spring force as would make it difiicult to press the jaws together when attaching or removing a bobbin from its holder. I

The new type of bobbin holder is especially suited for suspension mounting of bobbins upon a skeletonized type of creel wherein the long conventional creel board is replaced with parallel spaced, longitudinally extending and longitudinally slotted runners or rails, and it is a further object of this invention to provide a novel structure for mounting each bobbin holder at. any desired position along one of the rails, the mounting structure being retained in place by a spring force which is readily releasable thereby enabling the mounting to be quickly attached, detached, or relocated to a new position along the rail.

The foregoing as Well as; other objects and advantages inherent in the invention will become more apparent from the following detailed description of a preferred embodiment of the invention when considered with the accompanying drawings. In the drawings:

Fig. 1 is an end elevation of the bobbin holder and its support shown attached to a rail of a skeletonized creel;

Fig. 1a is a fragmentary sectional view of a portion of one jaw of the bobbin holder;

Fig. 2 is a partially sectioned side elevation of the bobbin holder and support;

Fig. 3 is an end elevation of the support for the bobbin holder; I

Figs. 4 and 5 are perspective views of the support for the bobbin holder;

2,946,537 Patented July 25, 1960 Fig. 6 is an end elevation showing the support in the process of beingremoved or installed on the rail of the creel;

Fig. 7 is a vertical section through the'supportfor the bobbin holder taken on'line 7-7 of Fig. 2;

Figs. 8 and 9 are end and side elevations, respectively, of one of the spring elements by which the jaws of the bobbin holder are loaded;

' Fig. 10 is a view similar to Fig. 8 showing a loading spring which has a" lighter loading characteristic than that of Fig. 8 and which is adapted for supporting bobbins of correspondingly less weight;

Fig. 11 is a view showing a development of the loading spring of Figs. 8 and'9; and

Fig. 12 is a top plan of the blank from which the support for the bobbin holder is made.

With reference now to the drawings'the body of the bobbin holder is formed from a blank of metallic material such as for Example 18 gauge stainless steel bent'into generally inverted U-shape to establish two depending arms 1, 2 which are given a spoon like configuration. The bowl portions 1a, 2a of the spoon shaped arms face inwardly towards each other and are located at the lower portions of the arms. The sides of the arms 1, 2 are flanged at 1b and 2b to establish channels for receiving the

arms

3, 4 of a loading spring member 5 also of inverted U-shape which can be made from fiat steel strip material of suitable thickness of the order of 2".

As shown in the drawing, the

arms

3, 4 of the spring are located between and press outwardly against the arms 1, 2 of the bobbin holder. The lower portions 3a, 4a of the spring arms are bent outwardly so as to press against the inner sides of the bowl portions 1a, 2a and the spring is retained in position between the arms of the bobbin holder by'establishing a detachable connection therebetween which, in the illustrated embodiment, comprises a tongue 2c struck out from the bowl portion 2a as shown in Fig. 1a, which fits into a correspondingly located aperture 6 in the spring arm 2. Thelower end of spring arm 4 is extended to form a hook portion 7 that reaches across and behind and engages the lower end of the arm 1 thus acting as a stop to limit separation of the arms 1, 2 brought about by the laterally outward force exerted by the spring arms '3, 4.

The bobbin 8 is placed on the holder by pushing it upward. As the bobbin moves upward against the bowl portions re, 2a the latter are moved inwardly toward each other against a counter pressure exerted by the

spring arms

3, 4. As upward movement of the bobbin continues, the bowl portions 10:, 2a'clear the uniformly diametered portion 8aof thebore in the bobbin and engage the outwardly tapered or shoulder portion 8b of the bobbin bore.

This permits the bowl portions 1a, 2a to move outwardly and come to rest in the positions shown in Fig. 1 thus holding the bobbin in place. 'Toremove the bobbin, a downward pull is exerted thus moving the bowl portions 1a, 2a close enough together so as to pass the uniformly diametered portion 8a of the bore in thebobbin. 1

V In Fig. 10 is shown another loading spring 10 similar in structure to and interchangeable with the spring 5 but which is inade from thinner gauge stock. This spring accordingly possesses a lighter spring characteristic and is adapted for supporting abobbin of lighter weight.

h? h P rtion 11 of the spring i l n' hat shorter than the hook portion 7 011' the avier spring shown in Fig. 8 so as t9 h the 2 of the lholder closer together. Thisalsois in keeping with the difierences in size and weightsbt bobbins since the smaller bobbins have correspondingly bobbins or packages come in several different sizes and Weights such as an 8 x 4, a 10 x or a 12 x 6 /2 and hence a different spring is designed to furnish the desiredamount of tension for each size and weight of package, the springs being interchangeable'with each other on the same bobbin holder. Fig. 11 shows the blank of spring metal utilized in the formation of the resilient springs.

This invention also provides an improved construction for suspension mounting of the bobbin holders upon a skeletonized type of creel. Such a creel includes a plurality of parallel spaced horizontal rails extending longitudinally along the textile processing machine in lieu of the long conventional creel boards, and a short longitudinal section of one such rail is shown at 12 in Fig. 2. End views of the rail are seen in Figs. 1, 6 and 7. The rail 12 is characterized by a slot 13 centrally located in the lower face of the rail and which extends for the full operating length of the textile machine. The rail itself may have any desired configuration and is shown here as being of triangular shape which provides the necessary longitudinal rigidity when the least amount of material.

In accordance with the present invention, the support for the bobbin holder is so constructed as to enable one to readily install the same in any desired position along the the length of the rail. In particular, the support is formed from a blank of spring steel and includes spaced flanges extending laterally from each side thereof which embrace the marginal portions of the slot in the rail.

Fig. 12 shows the blank from which the support 15 is formed in to the configuration shown in Figs. 4 and 5. The central body portion 15a is flat and provided with a centrally located cup-shaped aperture 15b for receiving a bearing and depending pin assembly from which the bobbin holder is suspended. The ends of the support include portions 15c offset upwardly from the central portion 15a and parallel therewith and from which L- shaped portions 15d are extended downwardly at a steep angle. The L-shaped portions 15d are parallel and the base portions 15e which face outwardly lie below the side edge 15 of the body portion 15a by a distance generally equal to the thickness of the stock from which rail 12 is formed. The opposite side of the body portion 15a, as is shown in Fig. 5, includes a centrally located laterally projecting flange 15g and downwardly extending L-shaped portions 15h at each side of the flange 15g having their base portions 15i facing outward and lying below flange 15g by a distance generally equal to the thickness of the rail stock 12.

As is now evident, the base portions 15a in cooperation with the side edge portion 15 constitute spaced flanges which are adapted to embrace one edge portion .of the slot 13 in rail 12, and the base portions 151' in cooperation with the flange 15g similarly constitute spaced flanges which are adapted to embrace the opposite edge portion of slot 13 as shown in Figs. 1, 2 and 7. Since the support-15 is made from a relatively thin spring steel blank of the order of thickness and the downwardly extending L-shaped portions 15d have considerable length, they can be flexed inwardly by pressure from the fingers to the position shown in Fig. 6 until the oppositely located flange 15g clears the edge of slot 13. In this manner, the support 15 can be easily removed from or installed on the rail 13 at any desired location therealong. Since the flange spacing is generally equal to the thickness of the rail stock and the resilient L-shaped portions 15h are pressed inwardly from their normal free position to a vertical position when the support is installed on the rail, the restoring force inherent in the portions 15h serves to prevent the support 15 from creeping along the rail.

The bearing and pin assembly previously referred to for supporting the bobbin holder, and shown best in Fig. 7, comprises an arcuately shaped bearing member 16 seated in the aperture 15b and including a central vertical bore 16a for receiving a pin 17. The upper end of the latter is headed at 17a so as to hold the pin in the bearing, and the lower end of this pin which passes through an aperture 18 in the upper end of the bobbin holder is likewise headed at 17b to prevent the bobbin holder from becoming detached from the pin. The diameter of aperture 15b is larger than that of pin 17 so as to enable the pin 17 and its bearing member 16 to have a swivel action, in the support 15, and consequently the longitudinal axis of the bobbin holder is freely angularly movable about the vertical centerline of the aperture 15b.

Thus it is apparent that my invention provides novel suspension means for mounting bobbins upon a skeletonized type of creel and novel holder means for removably supporting the bobbin in the vertical winding position.

While in accordance with the statutes I have illustrated and described the best form and embodiment of my invention known to me, it will be apparent to those skilled in the art that various modifications and improvements may be devised without deviating from the scope of my invention as defined in the appended claims.

I claim:

1. A holder for substantially cylindrical textile machine bobbins comprising means for removably securing a bobbin to said holder, said bobbin securing means including a plurality of jaw members adapted to be inserted Within the bore of said bobbin, said jaw members being constituted by depending portions of an inverted U-shaped member formed from a metallic blank, and an inverted U-shaped spring formed from flat material, said spring being removably positioned between and having the arms thereof contacting the inner surfaces of said jaw members thereby to urge said jaw members apart to firmly contact the walls of the bobbin bore.

2. A bobbin holder as defined in claim 1 wherein one of the arms of said spring has a hook portion at the lower end thereof adapted to cooperate with the opposite jaw member to form stop means for limiting the extent of separation of said jaw members within said bobbin bore.

3. A bobbin holder as defined in claim 2 wherein one of the arms of said spring has an aperture therein and the jaw associated with said arm has a projection on the inner surface thereof adapted to cooperate with said aperture to align and retain said spring within said jaws.

4. A holder for substantially cylindrical bobbins for use in textile machines having a creel rail with a longitudinal slot in the lower surface thereof comprising in combination means for removably securing a bobbin to said holder, said bobbin securing means including a plurality of jaw members adapted to be inserted within the bore of said bobbin and spring means disposed between and engaging said jaw members to apply an outward force thereto thereby urging said jaw members apart to firmly contact the walls of the bobbin bore, said spring means being removable from said jaw members for replacement with a similar spring means having a different spring characteristic, resilient bracket means cooperating with said slot to removably secure said bobbin holder to said creel rail, and a swivel connection joining said bobbin securing means to said resilient bracket means.

References Cited in the file of this patent UNITED STATES PATENTS 1,821,706 Hasbrouck Sept. 1, 1931 2,038,286 Hasbrouck et al. Apr. 21, 1936 2,636,696 McBride Apr. 28, 1953 2,774,549 Rulon-Miller et a1 Dec. 18, 1956 2,833,490 Quint May 6, 1958