US1365406A - Spool - Google Patents

Description

E. J. HUBBARD.

SPOOL.

APPLlcATgAoN FILED MAY 29, |920.

1,365,406. Patented 1111.111921.

UNITED STATES EBERJ. HUBBARD, OF BERWYN, ILLINOIS.

srooI-i.

Specication of Letters Patent.

Patented Jan. 11, 1921.

Appication filed May 29, 1920. Serial No. 385,101.

To all whom t may con/:em:

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

My invention relates to spools constructed either entirely or in greater part of sheet metal and of such shape and dimensions as to be interchangeable with the ordinary wooden spools heretofore used for holding fine insulated wire or other delicate materials.v

FVooden spools are rapidly giving way to sheet metal spools. There are sheet metal spools on the market intended for .holding wire, but such spools are not practlcal for holding magnet wire or other fine insulated wire for the reason that -the ends of the spools are thin thus permitting them to telescope one with another and chafe or cut the insulation and even the wire itself. Neither do the spools of the prior art possess the re quired rigidity and strength necessary for holding up under rough usage the spools are apt to receive during winding or unwinding of wire or during shipping or handling thereof. The important object of my invention is therefore to provide strong and rigid end wall construction and connection thereof with the spool body, and end walls of suhcientwidth to prevent bending thereof and therefore telescopic engagement of one spool with another, thus protecting wire on the spools against chafing or cutting.

The above and other, features of my invention are clearly disclosed in the structure shown on the accompanying drawings in which:

Figure 1, is a side elevational view partly in vertical diametral section:

Fig. 2, is an end view partly in section on line 2 2 of Fig. 1, and

Fig. 3, is a side elevational view partly in vertical section showing a modified arrangement.

'The hub 5 of the spool is formed from a rectangular blank of sheet metal rolled to cylindrical form and with its edges connected together by means of tongues 6 on one edge engaging in dovetail grooves 7 in the opposite edge. Extending from the ends of the hub are the tongues 8 which project through the slots 9 formed in the circular end disks or walls 10, the tongues after insertion through the Slots being deflected radially against the outside of the end walls as clearly shown. Extending axially through the hub is the cylindrical core 11 also formed of sheet metal, the core ends extending through the openings 12 in the end walls 10 and the material adjacent such openings being deflected outwardly to form cylindrical flanges 13 for receiving the core, these flanges being preferably spot-welded against the core.

The outer peripheral section of each end wall 10 is spun or otherwise deflected outwardly to form the cylindrical flange seetion 14 for receiving ller material 15 which filler material may be in the form of av wood block, or of paper, mill-board, composition or other material, and may be treated with protective water-proofing, lire-proong or other material. Each filler block has the center opening 16 for receiving therespective end of the core. After insertion of a filler block the peripheral edge 17 of the flange 14 is deflected radially inwardly against the outside of the filler block and the outer end of the core is flared outwardly as indicated at 18, the filler material being thus securely clamped at its periphery against the respective end wall 10 by the inturned edge 17 and at its center being firmly held against the end wall by the flared end 18 of the core. A very rigid structure is thus formed. The tongues 8 may be s ot-welded against the respective wall 10 fiut such spot-welding is reall unnecessary as the tongues are so se cure y clamped against the end walls by the filler material, the tongues sinking into the filler material under the pressure and being thus securely embedded therein and held thereby. 4The inturned edges 17 form a guard to prevent chafing of the filler material when the spool is set on end and the flared ends of the core serve also to permit the spool to be vreadily applied to a spindle.

The filler material gives considerable width to the end structures and such structures are so rigid and so securely connected with the hub and core that it is impossible for spools to telescope. Even if the ends of a spool should bear against the wire on another spool, the rims or flanges 14 are of such width that the insulation would not be injured. In forming the ends care is taken to sufficiently round the corners so that it will beim ossible for them to cut or scratch.

In ig. 3, I have shown a modified 8.1'-

V filler frame is of sheet metal as just de rangement. Instead of inserting non-metallic'filler material, the filler structure 19 is constructed of sheet metal comprising a wall having the outer flange 20 and the 'inner flange 21.y The outer flange fits within the flange 14 of the spool side-walls 10 and the inner flange fit the core. After insertion of the filler frame the peripheral section 17 of the rim 14 and the end 18 of the core are deflected in the same manner as in the structure shown in Fig. l. Where the scribed the tongues 8 are preferably spotwelded to the end walls l0.

I thus produce a spool which is especially adapted for holding fine insulated wire and.-

which has all the advantages of wooden spools and a great many additional advantages. They are of course of much greater strength than the all wooden spools and are very light. Owing to the improved construction of the end structure the spools cannot telescope andthe wire supported thereon is therefore fully protected.

Having described my invention'I claim as follows:

1. In a spool of the class described, the combination of a hub, a core of sheet metal, end walls havin walls lreceiving t 1e core cnds through their openings and being secured to the ends of the hub, and filler material surrounding the projecting ends of said core, the peripheral sections of said walls being deflected outwardly and downwardly to inclose the peripheral section of said filler material and the outer ends of said core being flared thereby to rivet said filler material against the end walls around the end wall openings.

2. A spool of the class described comprising a sheet metal hub having tongues at its ends, and walls having slots for receiving said tongues, said tongues extendin through said slots and deflected radial y against the out-side of said walls, said walls having axial openings, a sheet metal core extending through said openings and through said hub, the peripheral sections of said end walls being' deflected outwardly to form cylindrical flanges, filler material interposed between said flanges and the projecting ends of said core, the peripheral axial openings, said end edges of said flanges being deflected radially inwardly against the outer face of said filler material to clamp such filler material at its outer end against the end walls, the outer said end walls serving to lock said hub tongues against'said end walls.

3. A spool of the class described comprising a sheet metal hub, end walls of sheet metahsecured to the hub ends concentric therewith, said end walls having axial openings, a sheet lmetal core extending through said hub and projecting through said open ings beyond said walls, said end walls around said openings having flanges for engaging with said core and being spot-welded thereto, the peripheral sections of said end walls being deflected outwardly to form cylindrical flanges, filler material applied between said flanges and the projected ends of the core, the peripheral sections of said flanges and said core being deflected against the outer faces of said filler material whereby such material is securely clamped in position.

4. A sheet metal spool comprising a hub bent into cylindrical form from Vsheet metal, tongues at the ends of said hub, end plates having slots therethrough for receiving said tongues, said tongues after insertion through said slots being bent over against the outer faces of said plates, said plates having axial openings, a core bent up of sheet metal extending through said hub and projecting through said plate openings a distance outwardly therefrom, each end plate having a ilange surrounding its opening and intimately receiving the respective end of said core, said flanges and core being spot-welded together, said end plates at their outer section being deflected laterally to form 'cylindrical rims, a filler frame inserted within the rim of each end plate and receiving the projecting end -ol the core, and means for securing said filler frames to said end plates.

In witness whereof, I hereunto subscribe my name this 27th da of May, A. D. 1920.

' EB R J. HUBBARD.

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