US3105648A

US3105648A - Stock shell retaining device

Info

Publication number: US3105648A
Application number: US155314A
Authority: US
Inventors: Fred K Barns; Courtney H Wenger
Original assignee: BF Goodrich Corp
Current assignee: Goodrich Corp
Priority date: 1961-11-28
Filing date: 1961-11-28
Publication date: 1963-10-01
Anticipated expiration: 1980-10-01

Description

Oct. l, 1963 F. K. BARNs ETAL sTooK SHELL RETAINING DEVICE Filed Nov. 28, 1961- United States Patent O 3,105,648 STOCK SHELL RETAINING DEVICE Fred K. Barns, Akron, and Courtney H. Wenger, Cuyahoga Falls, Ohio, assignors to The B. F. Goodrich gonlapany, New York, N.Y., a corporation of New Filed Nov. 28, 1961, Ser. No. 155,314 3 Claims. (Cl. 242-72.1)

This invention pertains to the art of winding and unwinding of sheet material, and, more particularly, to the winding of sheet material on a cylindrical shell or roller.

Most winding shells, whether they be formed of wood or metal, have an axially extend-ing passageway formed therethrough which is square in cross section. This square passageway accommodates a square shaft over which the shell may be placed. Controlled -b-raking tension or a rotative -driving -force may be applied to the shaft to regulate its rotation in either winding or unwinding sheet material from the shell. Because of the square passageway, the shell is unable to rotate relative to the shaft. However, as is well known in the art, when winding or unwinding elongated sheet material onto or from such a cylindrical shell, the shell will tend to move axially on the shaft, due to uneven tensions imposed upon the shell by the material. Such movement will cause the fabric to bag, or sag, at one side or the other causing it to wrinkle or to telescope upon itself when being wound. This is particularly troublesome where two or more sheets of material are being wound together and their alignment, one with the other, is critical.

It beca-me incumbent upon those concerned with such winding operations to devise a means for axially locki-ng the shell on its shaft. Several crude expedients have been attempted in the past with unsatisfactory results. Many times ishims or Wedges were driven between the shaft and the walls of the shells passageway. This, of course, damaged both shell and shaft alike, shortening their useful life, to say nothing `of the problems arising upon attempted removal of the shell [from the shaft.

It is an object of this invention therefore, to provide a shell supporting shaft, incorporating mechanism for locking said shell to said shaft, the actuation of which may be accomplished quickly and easily without damage to either shaft or shell.

It is another Iobject of this invention to provide an apparatus as described in the preceding paragraph wherein said mechanism utilizes a locking shoe extensible from within said shaft to engagement with a shell positioned on the shaft.

It is a further object of this invention to provide an apparatus as described in the preceding paragraph wherein the movement of said locking shoe may 'be easily regulated from one end of said shaft.

Further objects and advantages of the invention will be apparent to those skilled in the art to which it pertains from the `following description of the presently preferred embodiment of the invention illustrated in the drawings forming part of this application, and in which:

FIG. 1 is a fragmentary, side elevational view of a shell shaft fitted with the apparatus of this invention, with a portion of the shaft cut away;

FIG. 2 is a plan view of the shaft and apparatus as shown in FIG. 1;

FIG. 3 is a cross sectional view of the shaft and apparatus, taken along line 3-3 of FIG. 1, with a wooden shell, upon which sheet material is being wound, mounted thereon; and

FIG. 4 is an elevational view of one end of the shaft shown in FIGS. l and 2.

The shaft 10, has a square passageway 11, best seen in FIG. 3, extending from one end to the other and defined by four

walls

112, 13, 14 and `15 lof the shaft. Located w-ithin an opening 16 in Wall 12, and mounted for movement therethrough is a rectangular shell locking shoe 17. By simple adjustment of a socket head bolt 18, journalled at one end of shaft 10, locking shoe 17 may be moved to and from -frictional locking engagement With a shell 19 supported by shaft 10.

Pivotally mounted by one end on a pin 20, press iitted int-o shaft walls 13 and y14, is a pivot arm 21. A generally U-shaped spring 2,2 is mounted at the opposite end of pivot arm -21 and bears against the inner sides of shaft walls 12 and 15 to normally depress arm 21 towards wall 15. On :the upper side of pivot arm 21 is a pivot bracket 23 through which is mounted a pivot pin 24. Pivotally mounted on pin 24 by means of

clevis brackets

25 and 26 is the locking shoe 17. A spring 27, which prevents shoe `17 from becoming cocked in opening 16 and jammed against the end =of the shell 19 when the shaft 1t) is inserted therein, is biased between arm 21 and shoe 17; and is located therebetween by means of a spring recess 28, formed in ythe underside of shoe 1'7, and a retaining pin 29 mounted on the top of arm 2.1.

Mounted in the end of the shaft 10, by means not shown, is a plug 3@ having a square plug portion 31 and a transition cap 32, the outer end of which is circular in cross section as seen in FlG. 4, `for rotation of the shaft `10 in conventional shaft support brackets, not shown. The plug 3o has 1an axial passageway 33` countersunk as at 34- to receive the socket head bolt 18. Bolt 18 has an Unthreaded shank portion 35 journalled in plug passageway 33. Loosely fitted about the portion of shank 35 extending beyond the square plug portion v31 of plug 30 is a Washer 36. A locking nut 37 is mounted on the threaded portion 38 of -bolt 18, closely adjacent washer 36, and locked thereto by means of a tapered pin 39. Adjacent the nut 37 a thick bumper washer 40, preferably of resilient material, `is mounted on bolt y18, next to which is also mounted' a metal washer 41. Threadably engaged with the end of the threaded portion 38 is a long hexagonal nut 42 to one face of which is mounted one end of an elongated bar member 43 slideably engaged with the inner face of Wall 15 to prevent nut 42 from rotating. At the other end of bar member 43 is mounted a tapered wed-ge cam member 44- for engagement with the underside of pivot arm 21.

In using a shaft 1G incorporating this invention the operator places the shell 19 over the shaft with the locking shoe 17 in its retracted position. After positioning the shell `19 on the shaft, the operator turns bolt 13 counterclockwise. The bolt 18 remains axially stationary and therefore hex nut 42, which is unable t-o rotate thereon, is moved toward pivot arm 2.1. Movement of nut ft2 toward farm 21 brings wedge cam member 44- linto carnming engagement with the underside `of arm 21 which then rides up the inclined portion of the wedge member to raise locking shoe 17 through wall opening 16 to locking engagement with the shell 19.

It will be readily appreciated that locking shoe 17 may be located anywhere along the shaft 10 depending upon the length of bolt 18 or bar member 43. With particularly long shafts it may be of advantage to incorporate a locking shoe near each end, each operable from its respective end.

Although the invention has been described with reference to its one presently preferred embodiment and a particular use thereof, modifications may be made tothe illustrated structure and other uses will be appa-rent to those skilled in the art to which i-t pertains without departing from the spirit and scope `of the invention as deiined in the appended claims.

We claim:

1. Apparatus for preventing relative axial movement between a shaft and a material winding shell coaxially supported by ,said shaft; comprising an axial rst passageway formed in an end of said shaft; a second passageway communicating said rst passageway with the exterior of said shaft at a right angle to said rst passageway; a pivot member pivotally mounted in said first passageway; a locking shoe pivotally mounted on said pivot member for movement through said second passageway, to and from locking engagement with said shell as said pivot member is pivoted; means normally urging said locking shoe away from said second passageway; means to maintain the orientation of said locking shoe generally parallel to the longitudinal axis of said shaft; a rotatable member having a threaded portion journalled at said end of the shaft; a non-rotatable thread follower mounted on said threaded portion for movement relative thereto as said rotatable member is axially rotated; and a cam member mounted on said thread follower for engagement with said pivot member, thereby moving said locking shoe to and from said locking engagement as said rotatable member is rotated in opposite directions.

2. Apparatus for preventing relative axial movement between a shaft having a square cross section and a material winding shell coaxially supported by said shaft; comprising an axial rst passageway of square cross-section formed in iafn end of said shaft; a rectangular second passageway communicating said first passageway with the exterior of said shaft at a right angle to said first passageway through a side of said shaft; a pivot member pivotally mounted within said rst passageway between two opposite sides of said first passageway for movement of an end of said member toward and away from said second passageway; spring means normally urging said pivot member away from said second passageway; a shell locking shoe pivotally mounted on said pivot mem-ber for movement within said second passageway to and from locking engagement with said shell as said pivot member is pivoted; a second spring means disposed between and mounted on said pivot member and said shoe to thereby normally maintain said locking shoe in parallel alignment with the longitudinal axis of said shaft; a rotatable member, having a threaded portion, journalled at said end of said shaft; a non-rotatable thread follower mounted on said threaded portion for movement relative thereto as said rotatable member is rotated; and a cam member mounted on said thread follower for engagement with sa-id pivot member to thereby move said locking shoe to and from said Ilocking engagement as said rotatable member is axially rotated.

3. Apparatus as defined in claim 2, wherein said second spring means further comprises a coil spring having one -end mounted at said end of said pivot member and the other end of said spring mounted on said locking shoe at a location away from the position at which said shoe is pivotally mounted to said pivot member.

References Cited in the file of this patent UNITED STATES PATENTS 1,212,600 Altemus Ian. 16, 1917 1,846,767 Stever et al. Feb. 23, 1932 2,443,243 Hayssen June 15, 1948 2,616,631 Bauer Nov. 4, 1952 2,904,278 Riemenschneider Sept. 15, 1959 2,983,460 Wright May 9, 19,61

OTHER REFERENCES Stockel, German application 1,038,709, printed Sept. 11, 1958 (Kl. 29a 6/13).

Claims

1. APPARATUS FOR PREVENTING RELATIVE AXIAL MOVEMENT BETWEEN A SHAFT AND A MATERIAL WINDING SHELL COAXIALLY SUPPORTED BY SAID SHAFT; COMPRISING AN AXIAL FIRST PASSAGEWAY FORMED IN AN END OF SAID SHAFT; A SECOND PASSAGEWAY COMMUNICATING SAID FIRST PASSAGEWAY WITH THE EXTERIOR OF SAID SHAFT AT A RIGHT ANGLE TO SAID FIRST PASSAGEWAY; A PIVOT MEMBER PIVOTALLY MOUNTED IN SAID FIRST PASSAGEWAY; A LOCKING SHOE PIVOTALLY MOUNTED ON SAID PIVOT MEMBER FOR MOVEMENT THROUGH SAID SECOND PASSAGEWAY, TO AND FROM LOCKING ENGAGEMENT WITH SAID SHELL AS SAID PIVOT MEMBER IS PIVOTED, MEANS NORMALLY URGING SAID LOCKING SHOE AWAY FROM SAID SECOND PASSAGEWAY; MEANS TO MAINTAIN THE ORIENTATION OF SAID LOCKING SHOE GENERALLY PARALLEL TO THE LONGITUDINAL AXIS OF SAID SHAFT; A ROTATABLE MEMBER HAVING A THREADED PORTION JOURNALLED AT SAID END OF THE SHAFT; A NON-ROTABLE THREAD FOLLOWER MOUNTED ON SAID THREADED PORTION FOR MOVEMENT RELATIVE THERETO AS SAID ROTABLE MEMBER IS AXIALLY ROTATED; AND A CAM MEMBER MOUNTED ON SAID THREAD FOLLOWER FOR ENGAGEMENT WITH SAID PIVOT MEMBER, THEREBY MOVING SAID LOCKING SHOE TO AND FROM SAID LOCKING ENGAGEMENT AS SAID ROTATABLE MEMBER IS ROTATED IN OPPOSITE DIRECTIONS.