US1731219A - Spool - Google Patents

Description

$5 192%. e. D. ATWOOD. ,2

' sroon Original.- Filed July 2} 1924 avvuemto'c A 13 W @5 GMY A Patented Oct. 8, 1929 cnoncnn. A'rwoon, or BROOKLYN, NEW YORK SPOOL.

Application fil ed July 2, 1924, Serial No. 723,616. Renewed February 28, 1929.

As heretofore constructed, sheet metal bar-,

rels were supposed to have longitudinal edges of the bent sheet metal abutting, but the edges did not always abut, with the result that gaps or openings occurred between them along the barrel proper and also at'its ends outside the spool flanges. These gaps presented sharp cutting edges which were liable to injure the hands ofthe users, particularly at the ends of the barrel. This difliculty is overcome, according to the present invention,

by the overlapping of the longitudinal edges of the barrel. 4

Another object of the invention is to provide the sheet metal barrel of the spool with an inward projection adapted, when the spool is slid onto a winding spindle, to be engaged by a tooth or projection on the spindle so as to positively rotate therewith.

The advantage of this over spools as heretofore constructed isithat a number of these spools may be slid on to the same winding spindle, a projection on which will then, as the spindle rotates, pick up. all of the spools thereon by engagement with the inward projections on the spool spindle, so that all of the spools on the spindle will, with certainty, have wound upon them equal measured quantities of the metal to be wound.

A further object of the invention. is to provide a spool having a sheet metal barrel and flanges of fibrous material, secured to spool embodying the present improvements.

Fig. 2 is a vertical section thereof;

Fig. 3 is a vertical section of one end of the spool, showing particularly the shoulder on the barrel for engaging the inner face of the flange and the outwardly projecting end of the barrel which islto be crimped or bent downwardly in the engagement with the outer face thereof; and

Fig. 4 is a hori'zontalsection of the spool taken on the line H of Fig. 2.

Referring to said drawings A represents the spool barrel and B B the flanges of the spool. The spool barrel is of sheet metal bent to circular form in cross-section. It is provided near its ends with shoulders a which engage the inner faces of the flanges and it is also provided at each end with an extension 6 which passes through the opening :ofthe flanges and is then crimped or bent downwardly so as to form an outer shoulder, a engaging the outer face of the flange and indented therein and, with the other shoulder a, locking the flange securely to the barrel.

Heretofore, as before stated, it has been the custom to make sheet 'metal spool barrels with their longitudinal edges abuttin but it frequently happens that the edges 0 not actually abut but are separated along the body of the barrel and, of greater importance,

at the ends of the barrel outside the flanges. These separated portions present sharp cutting ed 'es which are liable to injure the handso? the users. In the present case, however, the' longitudinal edges of the barrel do 35 not abut and are not separated, but on the contrar overlap, as shown at d Fig. 4, both along t e body of the barrel as well as at its ends-outside the flanges', so that these objectionable sharp cutting edges are avoided. The barrel A is also provided with an inwardly bent portion 6 providing a projection adapted, when the spool is slid onto a win'ding' spindle, to be engaged by a projection on the latter so as to positively rotate therewith for the winding of thread or other material upon the spool.

The flanges B, instead of being of metal, are of fibrous material, such as heavy paper stock. This greatly reduces the cost of manufacture, particularly in the case of large size spools. Furthermore, material of this kind lends itself perfectly to obtaining a tight or rigid connection between the flange and 5 spool because when the ends of the barrel are crimped or bent inwardly to form the shoulders. 0, they may, without injury to the flange or spool as a whole, be slightly embedded in such material. 10 What I claim is: g

A spool comprising a barrel of sheet metal, bent to circular form in cross section with its longitudinal edges overlapping throughout their entire length, said barrel having shoul- 15 ders near its ends and a pair of flanges of fibrous material at either end of the barrel and abutting the shoulders, the extreme ends of the barrel with their longitudinal edges overlapping being crimped inwardly to form 20 shoulders and indented in the fibrous material of the flanges.

In testimony whereof, I have hereunto set my hand.

GEO. D. ATWQOD.

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