US1748601A - Electric-cord take-up - Google Patents

Description

Feb. 25, 1936. B GoT'rLlEB 1 1,748,601

- ELECTRIC CORD TAKE-UP Filed Nov. 8. 1927 Patented Feb. 25,' 1930 7 BENJAMIN Go'rrLIEB, or NEW Yonx, N. Y.

ELEcrnIc-conn Tann-UP Application led November 8, 1927. Serial No. 231,969.

'This invention relates to electrical appliances and'has particular reference to adjustable cords or electric wires such as are used in connection with. electric lamps, liat 5 irons, hair curlers, and many other analogous appliances. A

Among the objects of the invention is to provide an unusually compact casing or base mechanism for an article such as a table lamp or its equivalent for the housing of an electric cord of any desired or suitable length 'and for adjustment of the eiiective length thereof beyond the lamp base or the like according to the space or interval between the lamp 'and the socket into which the cord is plugged. l

A further object of the invention is to pro A vide manual means for controlling the automatic taking up or winding of the cord upon a reel or its equivalent so as to prevent an undesired portion of the cord from lying loose between the lamp and the socket. I

wish it to be understood, however, that where the term lamp is used herein it should be understood in a sense broad enough to cover all types of electrical apparatus.

With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted -to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practical embodiment thereof reference is had 4to the accompanying drawings in which like reference characters designate the same parts in the several views, and in which- Figure 1 is a side View of an electric lamp equipped with my improvement, al portion of the base"'being broken away. Fig. 2 is a bottom plan view of the samel on a larger scale. i

Fig. 3 is a vertical sectional view on the broken line 3-3 of Fig. 2.

Fig. 4 is a horizontal View with parts in section on the line 4-4 of Fig. 3.

Fig. 5 is a fragmentary view of a portion of the structure of Fig. 2 on a larger scale.

Fig. 6 is a vertical sectional vlew on the so line 6 6 of Fig. 5.

. Fig. 7 is a transverse section on the line 7.7 0f 5. e

Referringv now more lspecifically to the drawings I show 4my improvement as em'- bodied in' a table lamp having a head 10 mounted upon a goose neck or upright support 1l carried by a base 12, the upright 11 extending upward from any desired portion of the base as at one side of the center thereof as indicated `in Fig. 2. l

Secured within the base 12 and Supported as upon a pair of arms or brackets -13 is a casing 14 of cylindrical form preferablyv for the housing of a reel 15 'and a spiral spring 16 and other details incident to these` parts. The bottom or base framework includes a bracket 17 having a center bearing 18 in which is mounted or secured a center post 19 having an anchor member 20 connected thereto' belowthe bracket 17. The bracket isyshown provided with 'a series of' three pins 21 over whichthe anchor member 20 is adapted .to snap in succession as indicated by the dotted lines and arrow of Fig. 7 in making a preliminary adjustment of the strength of the spring, a result effected by the rotation of the anchor member 20 in a clockwise direc- -tion as indicated in Figs. 2 and 5 by the use of a suitable tool applied to the anchor member or its post 19. Except as just stated, the center post 19 is held stationary and around lit the reel 15 is adapted to be rotated in either direction.

The cord leading to the lamp comprises two leads 22 and 23 which are extended along the support 11 and are `branched from each other within the base 12 and attached at 24 and 25 respectively to a pair of , brushes 26 and 27 which have constant bearing contact with' a pair of rings 28 and 29 respectively 90 mounted upon the u per surface of the reel andsuitably spaced rom each other. I may state at this time once for all that suitable insulation is used Wherever necessary to carry out the purposes of the invention. The '95., brushes 26 and 27 vare stationar as is also the casing 14 into which they project through openings 30 and 31 respectively. I i

The adjustable cord 32 is guided'thrcugli a. hole 33 inthe base, over; any suitableoranti- 100 friction rollers 34, inward through a hole in the side of the casing 14, and is wound upon the reel 15, the inner end of the cord being parted with the two vwire portions thereof attached respectively to the rings 28 and 29, whereby such inner end of the cord 32 has permanent connection with the reel. The electrical contact between the two cords or wires being completed through the brushes land rings, the contact is complete at, all

ing the proper degree of tension is established in the spring by rotation of the center post 19 and anchor member' 20. To elongate the cord 32 the operator simply grasps it and pulls it out through the hole 33, the reel paying out 4the cord accordingly and storing increased power in the spring 16. ,As a suitable means to hold the reel i-n such position withthe spring Wound up I provide a springpressed dog 38 pivoted at 39 and held by means of an expansion spring 40 with its point engaged in any one of a series of notches 41 formed in the periphery of the reel 15. This dog 38 and notches 41 operatein vone direction only and normally hold the spring from unwinding and the cord 32 from being retracted or wound upon-the reel.

Easy means, however, is provided to release the dog as by a pull piece 42 comprising a knob and chain extending through a guide hole 43 in the base and attached at 44 near the end of the dog. lVhen this pull piece is drawn by the operators fingers against the' force of the spring 40, the reel is set free to wind up the cord under the force of the main spring 16. Vhen a sufficient length of the cord is so wound up the operator-simply releases the pull piece 42, making the dog again effective at 38 to hold the reel in place.

I claim:

l. In an electric cord take up, a base in the form of an outer casing, an electrically operated device supported thereon, a substantially closed inner box casing housed within the said outer casing in spaced relation to the wall of the latter, a reel for an electric cord within the inner casing, spring actuated means to rotate the reel, commutator rings on the reel connected to the electric cord, brushes to electrically contact the commutator rings, means to connect the electrically operated device to said brushes, means mounted externally on the upper portion of the inner i casing in the space between the same and the outer casing to carry the brushes, the inner casing having openings through which the brushes extend from the carrying means therefor into contact with the commutator rings, and releasable means alongside the inner casing in the space between the same and the outer casing to hold the reel in set position against the tension of the spring.

, 2. In an electric cord take' up as set forth in claim 1, wherein the inner casing is positioned above the bottom of the outer casing affording a space beneathsaid inner casing, and means is positioned in said 'space beneath the inner casing for initiallyA Setting the tensionon said spring.

l In testimony whereof I affix my signature.

BENJAMIN GOTILIEB.

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