US548640A - Spool - Google Patents

Description

(No Model.)

W. H. HOLDEN.

SPOOL. No. 548,640. Patented Oct. 29, 1895;

11v Vim/2'02? UNITED STATES PATENT FFICE.

WILLIAM H. HOLDEN, OF WATERLOO, IOWA.

SPOOL.

SPECIFICATION forming part of Letters Patent No. 548,640, dated October 29, 1895.

A plication filed A ril 13, 1898. Renewed April 13, 1895. Serial No. 545,658. (No model.)

To all whom it mag concern:

Be it known that I, WILLIAM H. HOLDEN, a citizen of the United States, residing in Waterloo, in the county of Black Hawk and State of Iowa, have invented certain new and useful Improvements in Spools; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters and numerals of reference marked thereon, which form part of this specification, in which- Figure 1 is a perspective view of my improved spool. Fig. 2 is a longitudinal sectional View of thesame, and Fig. 3 is a detail view of one of the heads of the spool.

My invention relates to that class of spools in which the barrel and heads are made in separate parts and assembled.

The object of the invention is to provide a spool of this class in which the parts may be assembled at the place of manufacture or Shipped in their unassembled condition and assembled at the places of use or sale, and that without the use of tools of any sort.

The invention consists, primarily, in a spool having a barrel and two annular heads, each of which has a barrel-opening, into which projects the free end or ends of a biting or clamping tongue or tongues, which will permit the heads to be forced inwardly upon the ends of the barrel, but will firmly bite the barrel when outward pressure is exerted on said heads.

The invention also consists in the construction and combination of parts which will be hereinafter described and claimed.

Referring to the drawings, A represents the barrel, formed of any suitable material and of any desired length, and 2 2 are the spoolheads. Each of these heads consists of a fiat annulus having its inner periphery dished outwardly and formed with a plurality of biting or clamping tongues or prongs 3, four being shown, though a greater or lesser number may be employed. The inner end edges of these tongues form the walls of the central barrelopeningat. This opening is preferably slightly smaller than the circumference of the barrel, so that the tongues 3 will firmly engage the barrel as they are forced inwardly thereupon,

or, in other words, so that there will be a snug fit and an outward inclination of the tongues. It follows, therefore, that any strain tending to force the spool-heads apart will only cause the tongues to bite more firmly into or upon the barrel, since the tendency of the tongues will then be to straighten and lie in the plane of the heads. So, also, the dishing of the heads not only strengthens them, but imparts an outward curvature or inclination to the tongues in the first instance, so that when they frictionally engage the barrel in being forced inwardly they will tend to straighten when outward strain is exerted, and thus their inner edges will firmly bite upon the barrel. Moreover, if for any reason it should be necessary to lessen the capacity of a spool it is obvious that this may be accomplished by simply forcing one or both of the heads 2 inwardly.

The tighter the thread, cord, or wire is Wound upon the barrel the more firmly will the heads be held; but this would not be the case if the barrel ends were slotted to form longitudinal springs to engage and hold an annular head. Moreover, where an annular head has slight segmental notches in its inner periphery to receive corresponding prongs on the barrel ends no such biting-tongues as mine are formed, and the heads must be held on by bending up the said tongues against their outer faces. I

Having thus described the invention, what is claimed is- 1. A spool comprising a barrel and heads each provided with a central barrel-opening and a biting tongue or tongues projecting into said opening and biting firmly upon the barrel when outward strain is exerted upon the head but permitting the head to be forced in- Wardly upon the barrel, substantially as and for the purpose set forth.

2. A spool comprising a barrel and annular heads each having a plurality of biting or clamping tongues, the inner edges of which form the walls of the barrelopening to grasp the same and hold the heads against outward movement, substantially as and for the purpose set forth.

3. A spool, comprising a barrel and annular dished heads, each formed in its dished portion with a plurality of biting or clamping tongues, the inner end edges of which form the walls of the barrel opening, substantially as and for the purpose set forth.

4. A spool head formed of an annulus having a plurality of biting or clamping tongues on its inner periphery the inner free ends of the said tongues forming the marginal walls of the barrel-opening, substantially as and for the purpose set forth.

WILLIAM H. HOLDEN. Witnesses:

S. M. HOFF, J. M. GROAT.

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