US1456093A - Slack-take-up device for electric-iron cords - Google Patents

Description

Mayv 22, 1923. 1,456,@93

A. CARLSON SLACK TAKE-UP DEVICE FOR ELECTRIC IRON CORDS Filed Dec. 7, 1920 WYTNZSS: AVVENYUR I @MLQWK Patented May 22, 1923 entree stares resents rarest caries;

ElL GARLSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHICAGO FLEXIBLE SHAFT COMP, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SLACK-TAKE -UP DEVICE FOR ELECTRIC-IRON CORDS.

Application filed December 7-, 1920. Serial No. 428,856.

To all whom'z't may concern:

Be it lmown that L'Axnn CARLSON, a citizen of the United States, and a resident of the city. of Chicago, in the county of Cook and the State of Illinois, have invented certain new and useful Improvements in Slack- Take-U Devices for Electric-Iron Cords, of

which is e following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to means for taking up the slack or extra length of an electrical conductor-cord such asv used in connection with an electric iron. It consists in the features of construction and arrangement of members as shown in the drawings and indicated by the claims.

In the drawings V Fi re 1 is a view of the device shown as applied to the conductor-cord of an electric 11011.

Figure 2 is a-sectional View of one of the grips detached from the cord showing the means for interlocking the two parts thereof.

Figure 3 is a transaxial section through one of the grips taken as indicated at line 33 on Figure 2. v

Figure 4 is a perspective view of one of the grip members.

One of the objects of this invention is to provide a take-up for the excessive length of a conductor-cord leading to an electric iron or the like so that the cord will not dangle or embarrass the user and still be sufliciently flexible and easily extensible to enable the full length of the cord to be used when desired.

The grip members of this device are so designed thatthey may be applied to a cord of the class indicated after the usual fittings are connected to the opposite ends.

The take-up proper is composed of a helical spring, 1, made of rather light wire, wound quite loosely about a mandrel of such diameter as will result in a very flexible, easily elongated spring that will readily stretch a comparatively great distance without exerting a tension that would tend to em danger the electrical connections at either end of the cord. Each end of the spring, 1, terminates in a loop, 2, turned in the plane of the axis of the spring.

For the purpose of attaching the device to the cord, A, there is provided for connection device in at each end of the spring to its loops, 2, a

gripping device, 3.

-notch, 5, on the other side, the tooth of one engaging the notch of the other.

The halves are held together byaspringclip, 6, which occupies a circumferential groove, 7 in the parts, 3. This clip is formed with an eye, 8, for connection with the loop,

2, of the spring, 1, and encompasses only a little more than half of the total circumference of thegrip member so that it may be easily applied and removed therefrom without the necessity of threading the cord through it.

The axial bore or kerf, 9 is so proportioned that the two adjacent edges of each half do not quite meet, being held apart by the cord. The purpose of this 1s so that the spring cli 6, may exert a pressure on the cord whic will create suflicient friction to overcome the tension of the spring, 1, when fully extended. The purpose of this is to prevent'the grip members from becoming displaced from their inititally adjusted position and still to derive thefull benefit of the entire length of the cord. v The bore or kerf, 9, is made perfectly smooth and straight to avoid any possible damage to the conductor wires or insulation thereon.

The advantage of this featureflwill be rec:

.' ognized upon it being pointed out that in the common forms of devices of this class many are made with a bore containingla rather sharp turn or bend, relying on bending the wire to conform to the bore for holding the osition, resulting in damage to the insulation and tending to crystallize and.

ultimately break the wire if it be frequently readjusted. I claim: 1 1. In a cord take-up device, a cord grip comprising two members havin eacha cord seat parted at a plane longitudinal with re spect to said seat, and a spring clip clasping the two members for holding them together substantially at the plane of said recess and gripping the cord, said clip having its clasp projection, having a transverse recess and ing wings extended through the parting plane at the other side of said seat a transverse pro- 15 of the two grip members at opposite sides jection reciprocal with respect to the said re- 5 of said cord seat, and being open at one side cess, whereby the two grip members may be for. lateral entry upon and disengagement identical in form and adapted for closing tofrom the two grip members. v gether upon the cord with the projection of 2. In the construction defined in claim 1, each-engaged in the recess of the other 2 foregoing, the two grip members having In testimony whereof, I have hereunto set 1 each midway 1n the length at one side of the my hand at Chicago, Illinois, this 2nd day of cord seat, members having each an exterior December, 1920. p groove forming a guideway for the clip wing AXEL CARLSON.

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