Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3552677 A
Publication typeGrant
Publication dateJan 5, 1971
Filing dateDec 16, 1968
Priority dateDec 16, 1968
Publication numberUS 3552677 A, US 3552677A, US-A-3552677, US3552677 A, US3552677A
InventorsHugh H Hacker
Original AssigneePlastics Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Knockdown spool
US 3552677 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

D United States Patent 1 1 3,552,677

[72] Inventor Hugh H. Hacker 2,148,394 2/1939 Thornton 242/118.6 St. Paul, Minn. 2,605,980 8/1952 Atwood et a1. 242/1 18.7 [21] Appl. No. 783,874 2,652,993 9/1953 MacMillan 242/1 18.6 1 1 Filed De 16, 1968 FOREIGN PATENTS 1451 fi f 451,873 8/1936 Great Britain 242/118.61 1731 A5818 956,829 4/1964 Great Britain... 242/1 18.7

St. Paul, Minn. a corporation of Minnesota Primary Examiner-George F. Mautz Attorney-Wicks & Nemer [54] KNOCKDOWN SPOOL l 6 D i F l C ng .85 ABSTRACT: A knockdown spool comprising a drum consist- [52] [1.8. CI 242/ll8.6l ing f two identical juxtaposed staves semicircular in cross 5651175, section whose edges have longitudinal grooves and tongues of 18.7, 1 n geable therewith for restraining circumferential and radi- 1 77-4, a] movement between the staves, said spool further including identical end flanges having apertures therein to receive 56 R f Cited resilient stems on said staves and said end flanges further hav- 7 I l e ing shoulders engageable with catches on said stems together UMTED STATES PATENTS with inclined guides guiding said catches into engagement 1,856,298 5/1932 Traver 242/1 18.61 with said shoulders and locking the end flanges on said drum.

KNOCKDOWN SPOOL SUMMARY OF THE INVENTION Applicant provides a simple knocked-down spool for ribbon, tubing, wire and the like..-Th e spool can be readily molded of plastic material and prior to erection the parts occupy a minimum of space. The spool has a construction whereby the same can be easily and quickly assembled without fastening devices into a rigid operable condition for use. The two staves making up the drum are identical, and the end flanges are identical thereby requiring but twd molds when the device is made from plastic.

These and other more detailed and specific objects will be disclosed in the course of the following specification, reference being had to the accompanying drawings, in which:

FIG. 1 is an end view of a spool illustrating an embodiment of the invention.

FIG. 2 is a side view of the structure shown in'FlG. l, a portion of which is broken away.

FIG. 3 is a sectional view taken on line 3-3 of FIG. 1, illustrating a portion of one end flange and stave with the stave in position to be applied to the end flangeand drawn to a greater scale than the scale of FIG. 2.

FIG. 4 is an end view of the drum shown in FIG. 3 rotated 22% from the position shown in FIG. 3;

FIG. 5 is a side elevational view of the upper stave shown in FIG. 4. 1

FIG. 6 is an enlarged fragmentary sectional view of a portion of FIG. 3 with a stem shown in connected position with the flange. a I

The spool A herein illustrated and constituting the invention includes a drum 10 having end flanges 30 and 50 attached thereto.

The drum 10 consists of a number of staves assembled to form a tubular construction. In the form of the invention disclosed two staves l2 and 14 are shown which are identical and semicircular in cross section. However, a different number may be used. These staves are provided with ribs 16 extending in a circular direction inwardly therefrom. The outer surface 18 of the drum 10 when the staves l2 and 14 are assembled becomes cylindrical and substantially uninterrupted and receives the product to be wound on the spool.

The longitudinal edges of the staves are held from circumferential movement and inward movement by holding means 20. This holding means utilizes a longitudinal groove 22 in the form of a rabbet at one longitudinal edge thereof and a tongue 24 at the other longitudinal edge thereof. The tongue of one stave fits into the groove of the adjoining stave so that each stave is interconnected with the adjoining stave to maintain the circumference of the drum as cylindrical. At the same time the staves are held from relative circumferential and radial movement when the product is woundabout the same.

The end flanges 30 and 40 are identical in construction and are interchangeable. Hence only thelend flange 30 will be described in detail. This flange is disclike in form and has an outward taper 32 on the outer surface 34 thereof making it thinner at its outer edge 36. Extending axially inwardly from the central portion of the flange 30 is a collar 38 which is concentric with said flange and is formed with a cylindrical bore 42 also concentric with said flange. The outer surface 44 of 6 collar 38 is conical and forms a guideway for the stems hereafter described and is adapted to fit into a conical socket 46 formed in the end of drum 10. This socket 46 forms a sleeve 48 of lesser thickness than thethickness of the wall structure of said drum.

The flange 30 is held attached to the drum 10 by locking means 50 which includes a number of stems 52 extending outwardly from the outer edge 54 of the sleeve portion 48. These stems are received in apertures 56 in the flange 30 adjacent collar 38. The stems 52 have catches 58 at the ends of the same which engage shoulders 62 formed: on the collar 38 at the localities of the apertures 56.

The stems 52 are of such a length that when the catches 58 engage the shoulders, the outer edge 54 of the collar 38 is in abutting engagement with the annular shoulder 59 of the socket 46 which aids in preventing displacement and promotes rigidity of drum and flange.

The manner of assembling the parts is exceedingly simple. The two staves 12 and 14 are fitted together as shown in FIG. 4. The flange 30 is next placed on a flat surface with the collar 38 extending upwardly. The two staves are then inserted over collar 38 with the stems 52 registering with the apertures 56. Downward pressure on the drum will progressively cause the conical surface 44 of collar 38 to spread apart the stems 52 as they enter apertures 56. As the catches 58 pass theshoulders 62 they snap back of the same for engagement thereof to lock the flange 30 to the drum 10. The same procedure is then applied to the flange 40. j i

The advantages of the invention are manifest. The device can be constructed at small expense. When the device is molded from plastic, only one mold is necessary for both staves 12 and 14 for the same are identical. The same is true of the flanges 30 and 40 which are identical. The spool is sturdy in construction. When in knock-down relation the parts occupy a minimum amount of space. when assembled there are no weak portions subject to the strain produced by the winding of the product on the drum. When'in use the winding of the product on the drum holds the staves in assembled relation and prevents movement therebetween. when assembled the flanges have a flat smooth inner surface extending down to the drum and the drum has a smooth cylindrical surface extending up to the flanges. The spool may be used with string, cord, wire, tubing or sheet material in strips.

I claim:

1. A knockdown spool comprisingi a. two semicircular staves adapted to be assembled to form b. platelike end flanges at the ends of the drum;

c. holding means between the staves restraining relative radial movement between saidstaves when said staves are assembled;

d. a frustoconical collar extending'inwardly from each of said end flanges; and

e. concentric with the axis of said drum:

fosaid collar being disposed with'its smaller end inner

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1856298 *Feb 15, 1929May 3, 1932Franklin Process CompanySpool, beam, or the like
US2148394 *Jul 12, 1932Feb 21, 1939Udeil Thornton RaySection or warper beam
US2605980 *Dec 12, 1947Aug 5, 1952G B CoSpool
US2652993 *Jul 16, 1951Sep 22, 1953Macmillan Richard HWarp beam
GB451873A * Title not available
GB956829A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3753533 *Aug 20, 1970Aug 21, 1973Data Packaging CorpTape reel
US3785584 *Nov 17, 1971Jan 15, 1974Albany Int CorpSnap lock assembly
US3822841 *Nov 24, 1972Jul 9, 1974Campbell KKnockdown reel
US4471919 *Sep 13, 1982Sep 18, 1984Crellin, Inc.Utility reel
US4903913 *Aug 2, 1988Feb 27, 1990Advanced Products IncorporatedKnock-down spool assembly
US5143316 *May 9, 1990Sep 1, 1992Advanced Products IncorporatedSpool assembly
US5236145 *Feb 13, 1992Aug 17, 1993Nestor Basquin SaReel for packaging a conductor
US5415362 *Jun 16, 1993May 16, 1995Lorenzo; AngelFlanged bobbin
US5575437 *Jan 12, 1995Nov 19, 1996Campbell; Kenneth E.Knockdown reel
US5660354 *Feb 7, 1995Aug 26, 1997Ripplinger; C. RobertMating spool assemblies for reducing stress concentrations
US5806788 *Jun 27, 1997Sep 15, 1998Direct Wire And Cable, Inc.Knockdown reel assembly
US5954294 *Jan 16, 1997Sep 21, 1999Ulvator AbMethod of manufacturing a coil of flexible object and core therefor
US5967455 *Jul 31, 1998Oct 19, 1999Mossberg Industries, Inc.Single-step molded reel
US6045087 *Aug 26, 1996Apr 4, 2000Vislocky; MarkSpool assembly for snap fit of flanges and spindle having guiding members for aligning with the flanges spindle
US6102327 *Aug 25, 1997Aug 15, 2000Mossberg Industries, Inc.Mating spool assemblies for relieving stress concentrations
US6267324May 25, 1999Jul 31, 2001J. L. Clark, Inc.Metal spool having high torque transmitting capacity between spool components
US6289570May 25, 1999Sep 18, 2001J. L. Clark, Inc.Die and method for assembling metal spool having high torque transmitting capacity between spool components
US6450441Jan 29, 2001Sep 17, 2002C. Robert RipplingerTwin sheet flanges for spools and reels
US6523239Jul 11, 2001Feb 25, 2003J.L. Clark, Inc.Die for assembling metal spool having high torque transmitting capacity between spool components
US6598825Jan 29, 2001Jul 29, 2003C. Robert RipplingerSimultaneous-access surfaces for reel-flange fasteners
US6874726Jul 10, 2003Apr 5, 2005C. Robert RipplingerCorrugated-core flanges for spools and reels
US7073746 *Feb 13, 2004Jul 11, 2006Angel Lorenzo BarrosoDemountable reel
US7364113Mar 31, 2005Apr 29, 2008Ripplinger C RobertCorrugated flanges for spools and reels
US7556217Apr 28, 2008Jul 7, 2009Ripplinger C RobertCorrugated flanges for spools and reels
US7828242 *Jul 29, 2008Nov 9, 2010Reynolds Consumer Products, Inc.Reusable take-apart spool and methods
US8272591Jan 24, 2011Sep 25, 2012Sonoco, Inc.Breakdown spool
US8286906Jul 6, 2009Oct 16, 2012Sonoco Development, Inc.Corrugated flanges for spools and reels
US8567037Sep 13, 2012Oct 29, 2013Sonoco Development, Inc.Method of forming a reel having corrugated flanges
US8985541 *Jun 11, 2010Mar 24, 2015Sennco SolutionsCable roller, system and/or method for extending and/or retracting a coiled cable
US20040007643 *Jul 10, 2003Jan 15, 2004Ripplinger C. RobertCorrugated-core flanges for spools and reels
US20040173713 *Feb 13, 2004Sep 9, 2004Angel Lorenzo BarrosaDemountable reel
US20050205713 *Mar 31, 2005Sep 22, 2005Ripplinger C RCorrugated flanges for spools and reels
US20110303816 *Jun 11, 2010Dec 15, 2011Sennco Solutions, Inc.Cable roller, system and/or method for extending and/or retracting a coiled cable
DE4403764A1 *Feb 7, 1994Aug 10, 1995Hs Tech & DesignAufrollautomat für einen Sicherheitsgurt
EP0672016A1Dec 4, 1992Sep 20, 1995Niehoff Kg MaschfProcess and device for producing a package of elongated winding material.
EP0748757A1 *Mar 11, 1996Dec 18, 1996Pentre Group LimitedReel and method of manufacturing same
WO2004014772A1 *Jul 30, 2003Feb 19, 2004Septien Rojas Jose ManuelStorage spool
WO2012098001A3 *Jan 19, 2012Nov 1, 2012Maschinenfabrik Niehoff Gmbh & Co. KgSpool for receiving winding material and spool part system
U.S. Classification242/118.61
International ClassificationB65H75/14
Cooperative ClassificationB65H75/14, B65H2701/5136, B65H2701/31
European ClassificationB65H75/14