US427719A - Joshua henry wilson and john greenwood - Google Patents

Description

J. H. WILSON & J. GREENWOOD.

(ModgL) PLANGED BOBBIN No. 427,719. Patented May-13, 1890.

UNITED STATES PATENT OFFICE.

JOSHUA HENRY XVILSON AND JOHN GREENNVOOD, OF TODMORDEN, COUNTY OF LANCASTER, ENGLAND.

FLANGE D BOBBIN.

SPECIFICATION forming part of Letters Patent No. 427,719, dated May 13, 1890.

Application filed March 26, 1888. Serial No. 268,590x (ModeL) Patented in England April 22, 1886, No. 5,551.

.To' all whom it may concern:

Be it known that we, JOSHUA HENRY WIL- sON and JOHN GREENWOOD, citizens of Eng land, residing at Oornholme, Todinorden, in 5 the county of Lancaster, England, have invented certain new and usefullmprovem cuts in Flanged Bobbins, (for which we have received Letters Patent of Great Britain, No. 5,551, dated April 22, 1886;) and we do hereby IO declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to wooden bobbins r 5 having flanged heads, such as are commonly used in the various steps employed in the preparation of fibrous materialas, for example, cotton, flax, wool, silk, the. The heads or flanges of such bobbins are sometimes made in one piece, although usually they consist of two or more layers of wood glued or cemented together, the grainof one piece crossing that of the other. Flanges thus made are frequently broken, cracked, or indented in the 2 5 ordinary handling to which the bobbins are subjected by the mill operatives. The flanges, especially when made of certain kinds of kilndried wood, as maple, birch, so, often become split out in use-that is to say, upon 0 throwing the bobbins, either filled or empty,

into a boX or other receptacle in a promiscuous manner, as is commonly done, little pieces of the wood are knocked out of the flanges, thereby producing rough and irregu- 3 5 lar places, which serve to retard or prevent the yarn from rendering over them freely, as would not be the case if the flanges were perfectly true and smooth. Another objection to such former construction is that when the 0 bobbins are used to carry, say, warp-yarn and the whole then subjected to a steaming process the act-ion of the steam and the subsequent action of heat in drying the yarn upon the bobbin, especially if repeatedly used for such purposes, often causes the flanges to shrink to a considerable extent, thus throwing the flanges out of round, as it is termedthat is, as wood only shrinks in a direction transversely of the grain or fibers the crossed sections present two flattened. edges on one face of the flange, alternating with two other flattened edges 011 the opposite face of the flange. When the flanges become thus distorted, it is customary to place the bobbins in a turning-lathe and turn them off to a true form by a cutting-tool, although sand-paper is sometimes employed for the purpose.

' Attempts have heretofore been made to overcome the defects or objections above referred to, but, so far as we are aware, without success. One of such former devices consists in covering the inner face of the flange with a disk of thin sheet metal, the outeredge of which is bent down upon the rim of the flange. Another device consisted'of a narrow metallic hoop or band concavo-convex in cross-section placed round the convex edge of the wooden flange, the width of such band being considerably less than the thickness of the flange. In both of these devices the edges of the metal are unprotected and are not let into the rim of the flange. Neither is there any additional means employed to retain the bands in place. Flanges thus protected with metal do not assist in holding the layers of wood together to any apparent extent. Another objection to the use of such metal-bound bobbin-flanges is that in the ordinary use or knocking about to which they are daily subjected the edges of the metal band sometimes become indented, thereby producing a burr or comparatively sharp point or points, which extend above the general surface of the band. Theseburrs prove very annoying from the fact that the yarn in its passage is some times caught in and by them and unduly strained, if not broken.

The object of our invention is to produce wooden bobbins having flanged heads strengthened or re-enforced by protecting- 0 bands of metal, such improved bobbins overcoming the objections or disadvantages inherent in the former construction of bobbins hereinbefore pointed out, and preserving the heads from splitting and from injury, thereby adding to the durability of the bobbins.

To that end our invention consists of a flanged bobbin having two continuous peripheral grooves or recesses formed in the rim of the'flange or head, into which grooves or recesses the two edges of a protecting-strip of metal are bent and secured, thereby not only serving tobind together the layers of wood forming the flange, but at thesame time presenting a true and smooth surface not liable to become distorted in use.

In the accompanying drawings, Figure 1 represents a vertical section of the head and part of the body of a bobbin taken on the axial line thereof, the protecting-strip being in place. Fig. 2 shows a side view of the same without the metal protecting-strip, the groove or recess formed in the head being such that the outer surface of the metallic band, when confined therein, is substantially flush both with the inner face of the head and its periphery. Fig. 3 shows this protecting-strip in perspective, detached. Fig. 4 shows a modification of the strip in which several pieces are attached end to end, instead of making the strip from asingle piece. Figs. 5, 6, and 7 represent modifications of the head and protecting-strip, the view in each instance being similar to Fig. 1.

A designates thebody of a bobbin, 011 the reduced enda of which a head B is fitted. This head has the shape of a disk with an opening in the center, where it fits on said end a, and it is preferably, though not necessarily, made of several layers glued together. The periphery of the head may vary considerably in shape. Thus in' Figs. 1, 2, and 7 the inner part of the head is of larger diameter than the outer part, and the latter slopes considerably, while the former does not slope at all, being merely rounded and recessed, as at 11 Figs. 1 and 2, at the inner edge.

In Fig. 5 the middle part of the periphery is of greatest diameter, forminga broad bead, the outer and inner parts rounding away from the same oneach side and being of practically equal diameter.

In Fig.6 the greatest diameter is much nearer the outer face of the head than the inner face, and the periphery inclines therefrom each way to the outer face and the inner face at very unequal angles.

. In each of the embodiments of our invention the periphery or edge of the flanges or heads B of the bobbin is provided with two continuous circumferential grooves, 19 indicating the outer groove and b the inner one, as shown in Figs. 5 and 7. In Figs. 1, 2, and 6, however, one side or edge of the head B is reduced in diameter somewhat, thereby forming an outer groove or recess b adapted to receive an edge of the metallic band.

C designates a circular protectingstrip of metal, having two centrally-facing flanges co, the former being the outer with respect to the end ofthe bobbin and the latter being the inner. This protecting and strengthening band is made, preferably, from homogeneous metal or low steel and having a polished or nickel-plated surface, although brass or other suitable metal can be used. The bands maybe made in one flat piece or annular without a joint, the same to be placed over an end of the bobbin and the outer portion of the band then bent and compressed or spun into the grooves of the flange by suitable tools; or the bands may be made in longitudinal lengths, being U shape in cross-section, and wrapped or rolled into the grooves, the ends to be soldered or brazed together or otherwise secured to-the bobbin head or flange to form a joint. In Fig. 1 the said outer lateral edge or flange, being the inwardly-bent flange c of the protecting-band, fits into and is held by the peripheral groove 1), and the other or inner lateral flange c is fitted into and fills the recess 6 formed in the head to receive it, thereby producing a smooth surface, the exposed surface of the wood being just even with that of the band. The band at the same time also serves to bind the layers of wood composing the head together. In Figs. 5 and 7 the flanges c c fit, respectively, into'the grooves 12 b. In Fig. 6 the inner flange 0' fits. into the inner groove 1) and the outer flange fits against the upper part of the outer slope of the periphery. In this case the periphery of the head is also turned down or recessed to receive the outer flange c of the metallic band, thereby producing a smooth surface, substantially as just stated with reference to Fig. 1.

By reason of our improvement the durability of flanged bobbins is greatly increased, becausethe U shaped protecting-band 0 when fitted into the two peripheral grooves acts to hold or clamp the sections or layers of wood together and prevent their lateral separation. It also serves to cover and protect the most exposed part of the bobbin head, so that the yarn passes over it without injury, owing to the inwardly-turned edges or flanges c c of the band being embedded into the head. By reason of the employment of our improved protecting and strengthening band the rotundity of the head is not seriously affected even when it has been subjected to the steaming and drying process hereinbefore spoken of. 4

Having thus described our invention, what we claim as new, and desire to secure by United States Letters Patent, is-

1. A flanged bobbin having two parallel continuous peripheral grooves formed in the rim of the flange or head and having secured thereto a strip or band of metal substantially U shape in cross-section, the lateral edges of which are wrapped or compressed into the said peripheral grooves to form a protecting and strengthening band, substantially as hereinbefore described.

2. A flanged bobbin. having a continuous In testimony whereof we affix our signatures in presence of two witnesses.

JOSHUA HENRY WILSON. JOHN GREENVOOD.

Witnesses:

A. G. EASTWOOD, JOHN W. CROWTHER.

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