US1525648A - Bobbin - Google Patents

Description

Feb. 1925. 1,525,648

E. J. HUBBARD Boanzn Filed April 14, 1924 2 2. 25 M I 46 3 .5 w I Patented Feb. 10, 1925.

UNITED STATES EBER J. HUBBARD, OF BERWYN, ILLINOIS.

BOBBIN.

Application filed April 14, 1924. Serial No. 706,263.

To all whom it may concern:

Be it known that I, EBER J. HUBBAPD, a citizen of the United States, and a resident of Berwyn, in the count-y of Cook and State of Illinois, have invented certain new and useful Improvements in Bobbins, of which the following is a specification.

My invention relates to bobbins known in the art as roving bobbins and used in the cotton industry for receiving cotton yarn or thread. Such bobbins usually comprise a hollow shank and a supporting base therefor with means for connecting the base in driving relation with a rotating pedestal from which a pivot spindle extends upwardly through the bobbin shank. Bobbins have been constructed entirely of wood and also entirely of metal. Both have advantages. 00d is lighter, but may be easily chipped, split and warped and also readily burned. wooealso presents a rough surface from which it is diiiicult to strip off surplus thread or yarn. When the bobbin is constructed entirely of sheet metal, such metal particu larly along the shank must be sufficiently heavy to prevent crushing or denting and such. bobbins may therefore weigh more than wood bobbins. The advantages of metal bobbins are that they are fireproof, will hold their shape better, and will present a smooth surface. The object of my invention is to construct a. bobbin combining the advantages of the all wood and the all metalbobbin. In general my improved construction com prises an inner or foundation structure of wood or other suitable nonmetallic material and an outer structure sheathing of thin sheet metal, the inner structure beingof just sufficient thickness and volume to sufficiently strengthen the shank portion of the sheathing and to provide sufficient bushing at the top and at the base for engagement with the supporting spindle and rotating pedestal, respectively. The inner structure and the sheathing structure are preferably sectional and other features of the invention reside in improved and practical means for securing the sections together to form the rigid bobbin with a. smooth exteriorsurface. The above and otherfeatures of my invention are incorporated in the structure shown on the accompanying drawing, in which-- Fig. 1 is a side e-levational view,

Fig. 2 is a diametral vertical sectional view,

Fig. 3 is a sectional view on plane 8-3, Fig. 1,

Fig. 4 is a view of the lower end of the boblbin before the base bushing is inserted, anc

Fig. 5 is a top view of the base section of the bobbin.

The outer or sheathing part of the bobbin comprises the shank part 10 and the base part 11. The shank part is formed by rolling a rectangular blank of sheet metal to cylindrical form and joining its edges preferably by seaming along the entire distance, as best indicated at 12 Fig. The base section 11 is cylindrical at its lower port-ion, its upper portion being first inclined to form the inclined shoulder 13, and then deflected radially inwardly to form the fiat annular shelf or seat 14. At its lower end the shank 10 has the tongues 15, and the shelf 14 of the base part has the slots 16 through which the tongues are extended to be secured against the inner faces of the illclined shoulder section 13 preferably by spot welding. The diameter of the shank is substantially the same as the diameter at the juncture of the shoulder 13 and shelf 14 so that the shank and inclined shoulder merge into each other.

The inner reenforcing structure of the bobbin comprises the cylindrical shell 17 of non metallic material preferably wood, this shell being of an outer diameter to slip fit into the sheathing 10. The shell seats at its lower end on the shelf let and the upper periphery of the sheathing is curled; inwardly and downwardly a distance into the shell end as indicated at 18, the shell being thus securely held within the sheathing. The upper section 19 of the reenforcing shell is of restricted diameter to provide the axial passageway 20 for receiving the spindle on which the bobbin is received when it is to be wound up or unwound. The lower wall 21 of the section 19 is sufliciently inclined so that itwill accurately and quickly guide the upper end of the spindle into the bearing passageway 20. l

The lower end of the base part 11 is normally straight as shown in Fig. 4 so that the bushing 22 may be readily inserted. Such bushing is preferably of wood and has the axial passageway 23 of a diameter to receive the cylindrical lug (not shown)- on the revolving pedestal on which the bobbin mounted for winding or unwinding. The

bushing accurately fits the cylindrical and inclined walls 11 and 12 of the base part and after insertion the lower end of the cylindrical wall part is curled inwardly and upwardly a distance into the bushing as in: dicated at 2-l, thus securely locking the bushing rigidly within the base 14 concentric with the reenforcing shell 17 and its spindle passageway 20. The bushing extends into engagement with the lower face of the shelf liiso that the metal or sheathing part of the bobbin is reenforced throughout its en tire extent by the interior wood portion. The bushing has the depressions or pockets 25 for receiving the tongues 15 and the bushing is thus further locked against rotational movement within its metal sheathing section. The rcenforcing shell 17 has the longitudinal notch 26 in its outside for receiving the seam 12. and such engagement locks the shell 17 against rotational movement.

In my improved construction the metal sheathing can be made of very thin sheet metal, say 30 gauge. The metal is preferably rustproof as for example tin plate, or steel, plated, coated or treated with rustproof metal or material. The reenforcing shell 17 has its annular wall of a thickness just suflicient to resist the crushing or breaking strains to which the bobbin might be subjected during use. The intimate connection between such shell and its metal sheathing causes a cooperation between the shell and sheathing which gives very great strength, yet the required degree of resiliency. The section 19 of restricted inner diameter forming the upper part of the reenforcing shell adds great strength to the upper end of the bobbin where it is exposed to blows and bumps, and the curled in part 18 of the sheathing forms an annular reenforcing rim which also adds considerable strength, and by extending a distance beyond the upper end of the shell protects the shell end against splitting or slivering.

The firm seating of the shank sheathing 10 on the shelf 14L of the base part sheathing together with the spot welding connection of the tongues 15 with the base sheathing gives a very rigid and strong connection, and when the bushing 22 is secured in the base sheathing intimately against the walls thereof, a very strong and rigid bobbin base is provided, the curled in edge 24 strengthening the lower peripheral edge of the base part and also protectingthe wood bushing from slivering or splitting. After insertion of the bushing in the base section the base is cut radially to provide the slots 27 for receiving the teeth (not shown) extending laterally from the pedestal lugs which engage in the bushing 22 when the bobbin is mounted on the pedestal for rotational movement. Usually when a bobbin is applied to a pedestal for winding it is merely applied with the bushing end receiving the upper end of the spindle, and is then dropped, to find its own seating on the pedestal and driving lug and tooth.

The curled in metal rim 24 will serve to protect the bobbin against injury when it strikes the hard metal pedestal after being applied to the upper end of a spindle.

My improved bobbin possesses all the advantages of the all wood bobbin or the all metal bobbin and has no greater weight than such all wood or all metal bobbin. The wood part of the bobbin which is entirely protected by the metal sheathing gives the necessary strength and resiliency, while the thin metal sheathing insures a smooth receiving surface for the bobbin from which any surplus yarn can be easily stripped oft. The intimate connection be tween the metal sheathing and the reenforcing wood part will give such strength that there will be no warping. The smooth outer metallic surface can be readily cleaned of grease or dirt, and as the protected inner wood part cannot come into contact with greasy surfaces there is no chance for absorption or the accumulation of grease or dirt by the wood. The bobbin construction is very simple and inexpensive. When the parts are assembled the reenforcing shell 17 is first slipped into the sheathing 10'. The lower edges of the sheathing and shell are then applied to the sheathing shell 14 of the base part and the tongues inserted through the slots 16 to be welded against the base part. The upper end 18 of the shank section is then curled in to the end of the shell. The bushing is nextinserted into the. base sheathing and the end 24 curled in, and then the slots 27 are cut.

I do not desire to be limited to the exact construction and arrangement shown and described, as changes and modifications can be made which will still come within the scope of the invention.

I claim as follows:

1. In a bobbin of the class described, the combination of a metallic outer part comprising a cylindrical sheet-metal shank and a sheet-metal base, said shank and base being secured together, a flange at the upper end of said base extending within said shank to form a seat, a re-enforcing shell of nonmetallic material within said shank seating at its lower end on said flange to be supported thereby, the upper end of said shank being turned inwardly to secure said shell in place, and a bushing of non-metallic material within said base, the lower edge of said base being turned inwardly to secure said bushing in place.

2. In a bobbin of the class described, the combination of a. thin sheet metal shank part and a thin sheet metal base part, an

annular shelf extending inwardly at the up per end of said base part, said shelf having a. plurality of slots, tongues at the lower end of said shank part extending through said slots and secured against the inner side of said base part, a reenforcing shell of non-metallic material within said shank part seated on said shelf, the upper end of said shank part being curled inwardly and downwardly into said shell to lock said shell within said shank part, and a bushing inserted within said base part, the lower edge of said base part being curled inwardly and upwardly into said bushing to lock said bushing within the base part.

3. In a bobbin of the class described, the combination of a thin sheet metal shank part, a thin wooden reenforcing shell lining said shank part, a thin sheet metal annular base part having a seating flange at its top, said shank part and its reenforcing shell seat ing at their lower ends on said flange, slots in said seating flange, said shank part having tongues at its lower end extending through said slots and secured against the inner sides of said base part, a mounting bushing of wood within said base part, said base part and bushing having trans verse slots for receiving driving teeth.

l. In a bobbin of the class described, a shank part, a base part, said shank part comprising a cylindrical shell of wood and an outer sheating of thin sheet metal, said base part comprising a mounting bushing of wood and a thin sheet metal sheathing therefor, said base part sheathing having an annular seat at its top engaged by the lower ends of said shank part shell and sheathing, extensions on said shank part sheathing spot welded to the base part sheathing, the outer ends of said shank part sheathing and said base part sheathing being curled inwardly into the reinforcing shell and bushing respectively.

5. In a bobbin of the class described, the combination of a shank part and a base part, said shank part comprising an inner cylindrical shell of wood and an outer thin metal sheathing, the upper end of said shell being of reduced inner diameter to provide being deflected inwardly and downwardly into the shank part shell to form a reinforcing protecting rim at the top of said shank part, the lower end of said base part sheathing being deflected inwardly and upwardly into said bushing to form a reinforcing rim for said base part, said base part having transverse slots for the reception of driving teeth.

6. A bobbin of the class described, comprising a cylindrical sheet metal base, a cylindrical shank of sheet metal secured to the base concentric therewith, an alining bushing secured in said base, a reinforcing shell extending full length of said shank and being enlarged at its upper end to form an alining bushing, said base having transverse slots for receiving driving teeth.

7. A bobbin of the class described comprising a cylindrical base of thin sheet metal having an annular horizontal wall at its top, a cylindrical shank of thin sheet metal seated on said horizontal Wall and having tongues spot welded to said base, an alining bushing of soft material inserted in said base, a reinforcing shell of soft material extending full length in said shell and being of reduced inner diameter at its upper end to form an alining bushing, the upper end of said shank being curled inwardly a distance into said shell to form a reinforcing rim, and the lower end of said base being curled inwardly a distance into said bushing to form a reinforcing rim for said base.

In witness whereof, I hereunto subscribe my name this 10th day of April, A. D.,

EBER J. HUBBARD.

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