US1560120A - Spool construction - Google Patents

Description

Nov. 3,1925. 1,560,120

E. $.7TEED s RooL CONSTRUCTION Filed Jan. '12. 1.923 ZShutI-Shut 1 INVENTOR; A-Er/ 3,73 4

A TTORNEYS Nov. 3,1925; 1,560,120

E. S. TEED SPOOL CONSTRUCTION Filnd Jan, 12; 1923 2 Shuts- Shut 2 INVENTOR. r/ 6. 72 ed.

ATTORNEY-5' Patented Nov. 3, 1925.

nsnr. s. rain), or AKRON, 0x10.

SPOOL CONSTRUCTION.

Application filed. January 12, 1923. Serial No. 612,200.

To all whom itmay concern:

Be it known that I, EARL S. TEED, a' citizen of the United States, and a resident of Akron, county of Summit, and State of Ohio, have invented a new and useful Improvement in Spool Construction, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to disti wish it from other inventions. L

he present invention relates to spools and the construction of the same and more particularly to the construction. of large spools suchas are used in the textile industry for holding the threads or yarns. In particular then, the present invention relates to the construction of such spools from rubber or other suitable compounds whereby the breakage may be kept low even with hard usage and rough handling. Another object is the construction of the spools from small preformed units whereby the expense 0 molding and manufacture may be reduced.

To the accom lishment of the foregoing and related en s, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing:

Figs. 1, 2, 3, 4, and 5 are central longitudinal sections throu h five different types of spools and Figs. 6, 8, 9, and 10 are end elevations of the'forms shown in Figs. 1, 2, 3, 4, and 5 respectively. Fig. 11 is a trajmental section showing on an enlarged sc e 'a portion of the parts shown in Fig. 14 the proportions being slightly altered.

-'. erably In the present type of spoolsit is necessary to provide a cylinder which is hollow and two spool ends which must'be securely attached thereto and the cylinder must be provided with bushings or bearings prefat the ends thereof.

In the form shown in Fig. 1 there is a. cylinder or. tubular member 1 which is in-. teriorly threaded, as at 2, at the ends toi receive the spool ends 3 which, as shown, are disks having an inwardly projecting hollow boss 4 exterio-rly threaded at 5 to fit the threaded tube. In order to obtain a. tight fit between the. ends and tube the boss is provided with a plain unthreaded portion 6 at its inner end adapted to snugly fit the bore of the tube inside of the threads and a similar unthreaded portion 7. is provided v on the boss adjacent the disk, this portion ending in a curve 8 and the tube is simiportion 9;-

the spoolreadily on the therefrom. The central bosses. of the ends 4 form two bearings for the spool when thus in use.

In Fig. which neither the tube nor 'the boss is f threaded and in this form the boss is pressed into the tubular member and both members have the curved ends 8 and 10 as in the first form.

Jn both of these forms the ends are pref- 2 a modified form is shown in erably applied with a slight amount of glue,

rubber cement or other adhesive to aid in fastening the parts securel together. By

curving the ends of the to e and the boss the depth through the end at the juncture of theboss is increased to add strength at this point and as the boss has a bearing at each end in the tube at the straight portlons 6 and 7 thus reducing the strain onthe threads in the form shownin Fig. 1. In both of the forms the separate 'parts are kept as small as possible to reduce the cost of molding and the -compoundisof courseof such-a character as to be cured or vulcanized or changed by heat and pressure into a hard substance which maintains its sha and hardness under all normal variations in lly' right hand half 15 of the spool is provided with an interiorly threaded inner end 16',

having plain 'unthreaded portions and. 18

at the ends'of the .threads while the left hand half 19 of the spool has the tube formed with an exteriorly threaded end with corresponding unthreaded surfaces 20 and 21.

In the,last two forms shown the entire spool comprising tubular member and ends is molded as a unit and in Fig. 5 the spool 25 has two integral ends 26 having bear ings'27 at the ends to correspond with the bosses formed on the separable ends. In the form shown in Fig. 4 the spool 30 is formed with the tubular member having a uniform interioraperture and separate bushings 31 are pressed into the ends of the aperture and are glued or cemented in 7 place.

These present spools when made of corservice requirements and yet are very strong and stand the hard usage and handling to which the are submitted. By the structure of the joint between the tubular member and the ends the threads do not have to take the strains and yet the material through the line between the boss and the spool end is maintained at its greatest thickness to reduce breakage. The material is such that the spools do not crack or split and they have sufiicient'elasticity to stand up under careless and rough handling. The parts are small and easily molded and even in the case ofthe unit type of construction may easily be made. As the parts are mold cured the surfaces are smooth and the spools of uniform size and thus no machine work need be done. The compound does not shrink, warp or deteriorate uiider moisture or heat to which it is subjected in use so that replacement is kept low.

Other modes of applying the principle of my-invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed. therefore particularly point out and distinctly claim as my invention 1. In spool construction, the combination of a tubular member-formed of vulcanized compound, havinga relatively thin wall, and being interiorly threaded at its ends, and end members of like material provided with hollow bosses threaded throughout a threaded tubular member ends, said bosses also being provided with anunthreaded smooth portion adapted to fit and bear and end members provided with hollow bosses and having screw threadsover a portion thereof to engage with said threads on said tubular member to hold the ends in place, said bosses having smooth portions adapted to snugly fit the bore of said tubular. member to obtain bearing therea'gainst' over areaof said tubular member of full thickness.

3. In spool construction, the combination of a tubular member having interiorly threaded ends formed with an outer portion beyond the threads of a diameter greater than the diameter of the bottom of the threads, and end members of disk shape formed with threaded hollow bosses, the bosses having an unthreaded portion adjacent the disk of a diameter to fit the smooth portion of said tube.

4. In spool construction, the combinationof a tubular member having interiorly threaded ends formed with an outer portion beyond the threads of a diameter greater than the. diameter of the bottom of the threads, and end members of disk shape formed with threaded hollow bosses, the bosses having an unthreaded port-ion adjacent the disk of a diameter to fit the smooth portion of the said tube, said boss having its inner end unthreaded to form a barrel adapted to snugly fit the bore of said tubular member inwardly of the threaded portion.

5. In spool construction, the combination of a tubular member having interior screw threads adjacent its ends, such threads terminating inwardly of the ends of the tube and leaving smooth portions of greater diameter than the bottom of such threads, said smooth portions being curved toward the outer edge of'the tubular member, and end members comprising disks having inwardly extending hollow bosses, having a smooth portion adjacent the disk and curving 1nto the disk, said bosses being threaded to engage the screw threads in said tubular member and terminating in an unthreaded portion adapted to snugly fit the internal bore of said tubular member inwardly of such threads. portlon of their length to engage with said.

Signed by me this 16th, day of December, 1922.

EARL S. TEED.

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