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Publication numberUS2306611 A
Publication typeGrant
Publication dateDec 29, 1942
Filing dateDec 10, 1941
Priority dateDec 10, 1941
Publication numberUS 2306611 A, US 2306611A, US-A-2306611, US2306611 A, US2306611A
InventorsBenjamin David
Original AssigneeBenjamin David
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cord take-up and control apparatus
US 2306611 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Dec. 29, 1942.

D. BENJAMQIN' 2,306,611

CORD TAKE-UP AiID CONTROL APPARATUS Filed Dec. 10, 1941 2 Sheets-Sheet INVENTOR, DA V/D BE/Vz/AMUV 9, 1942- D. BENJAMIN 2,306,611

CORD TA KE-Uf AND CONTROL APPARATUS Filed Dec. 10, 1941. '2 Sheets-Sheet 2 a L mg fill :i-I

INVENTOR. -DA V/D BEM-JAM/N ATTaPA/Em.

Patented Dec. 29, 1942 David Benjamin, Cleveland Heights, Ohio Application December 10, 1941, Serial No. 422,360

9 Claims.

This invention relates to means for enabling electric cords or wires for electric lamps and analogous movable articles to be automatically taken up when the said articles are moved'toward the base plugs with whichsaid cords or wires are connected and to be automatically paid out when the said articles are moved away from the said base plugs.

It is the general purpose and object of the invention to enable the foregoing objects to be accomplished in a particularly efficient manner and by means of a construction which is simple and economical of production. Other and more limited objects of the invention will be set forth hereinafter and will be capable of accomplishment by means of the construction shown in the accompanying drawings, wherein Fig. 1 'repre-- sents a vertical section through the base of' a portable electric lamp equipped with my 'invention and Fig. 2 'a bottom plan view'of the said base; Fig. 3 a sectional detail showing the position of the reel-locking and reel-unlocking mechanism shown in the preceding views, the

parts being in position to enable the reel on which the cord is mounted to be rotated freely when the lamp base is liftedfrom its support; Fig. 4 a view similar to Fig. 3, showing the positions of the parts when the lamp base is resting on its support and when the reel is being released,

as by manual means; Fig. 5 a view, similar to portion I0 and a side wall 0 the said base supporting a central tube l2 to which the standard of the lamp may be secured, the upper end of the tube being threaded for this purpose.

The tube l2 extendsthrough and is threaded into the top Ill of the base l0 and is also thread ed beneath said base, as indicated at I2 forthe reception of a bushing l3 having a radially outwardly projecting flange M at its base.

.15 denotes a reel having a cylindrical central opening I5 which reel is mounted upon the upper cylindrical surface Ii of the bushing, being supported thereon by a shoulder Iii resting on top of the flange M, the reel also having a cylindrical wall I5 extending downwardly from 7 the shoulder |5 upper surface with an annular chamber I6 provided with a post adjacent to its inner wall, there being apost -|8 anchored in the upper wall Ill of the base and projecting downwardly into the said chamber adjacent to the outer wall thereof. These posts provide means for anchor-- ing thereto the opposite ends of a torsion spring- |9 which tends to rotate the reel about the bush-' ing 3. In order to control such rotation, the base of the reel isprovided; adjacent to its periphery, with upwardly projecting notches- 2|l alternating with ratchetteeth 2|. 1 r

22 denotes a detent arm the outer end of which projects through a slot- 23* in the tubular guide 23, said guidehaving a; flanged 'base 23 secured thereto, as by a cotter pin 23. The-outer end of the detent arm issecured to the lowerend of a stem 24 by means of the screw 24*", the said stem passing through an opening provided therefor in a cap 23 for the tubular. guide 23.

25 denotes a cupped bushing which is fitted within the'upper wall l-il 'of-the base and through the bottom of which'the stem 24 projects, the:

upper end of the stem being provided with a push button 24 secured theretoand projecting above the said upper wall of the base.- A' spring v26 is mounted within the bushing, with one end there-' r of in engagement with the bottom of the same and the other end in engagement with the button, whereby it tends to hold the stem 24 elevated and the detentarm 22 in engagement with the ratchet teeth 2|. 2| denotes a spring, the upper end of which surrounds the bushing 25 and engages a washer 21 surrounding the upper portion of the said bushing, the lower end of the spring'bearing against the cap 23*. 7

It will be noted that, when the lamp is supported upon a surface 28 as by means of the feet 29, the tubular guide 23 is pressed upwardly,

- thereby compressing the spring 21 and allowing the detent arm '22 to engage the ratchet teeth 2|, as shown in Fig. 1. When in this position, the cord M will be relieved from the torsion of the spring l9. However, when it isdesired to move the lamp, the act of lifting the same from its support 28 will'enable the spring 21, which is of greater strength than the spring 26, to depress I the sleeve 23; and the engagement of the upper wall of the slot 23 with the detent arm 22 disengages the detent from the ratchet teeth 2| and enables the cord to be unwound fromthe reel against the torsion of the spring l9. When the lamp is placed upon its new support, the tubular guide will be moved upwardly to the position shown The reel is provided within its in Fig. 1, thereby compressing the spring 21 sufficiently to enable the spring 25 to lift the stem 24 to a. position to enable the detent arm to engage a ratchet tooth.

If it is desired to unwind the cord without lifting the lamp from its base, as when it may be desired to insert the cord plug into a socket located closer to or farther from the lamp than the one with which the plug has been used, this result may be accomplished by pressing the stem 24 downwardly, as by the hand or foot of the operator, as shown in Fig. 4, thereby to disengage the detent arm from the ratchet on the bottom of the reel.

In order to relieve the portion of the-cord which leads to the lamp from any tendency to twist, or from any pull that might be unintentionally exerted thereupon by unwinding the said cord entirely from the reel, I have provided the follot ing means for efiecting this result: 3% denotes the wires which extend upwardly through the tube 1 .2 to the lamp socket (not shown). One of these wires is shown as connected to an inner circular track 3| of'conductive material and the other to an outer circular track 32 of conductive material, the said tracks being secured to a disk 33 of insulating material which, in turn, is secured to the flange M of the bushing I3 by screws 34. The inner ends of the Wires I! and H of the cord which is wound upon the reel are connected by screws 35 and 35, respectively, to contact fingers 31 and 38, respectively, which contact fingers are adapted to engage the circular switch tracks 3i and 32, respectively. The contact fingers are carried by and preferably formed with spring arms which are electrically connected with the wires H and ll by means of lugs 39 and 40, respectively, of conducting material with which the said wires are held in contact by the screws 35 and 35, respectively, these lugs being in turn electrically connected with the spring arms by means of rivets which extend through the lugs and through an insulating disk 4|, said disk being in turn secured to a block of insulating material as by screws 44, the upper edge of the block 43 engaging the bottom of the reel thereabove and spacing the lugs and the screw heads from the base in such manner as to enable the upwardly bent portions or fingers of the spring arms to engage their respective tracks.

It will be evident that, by this construction, as the cord II is unwound from and upon the reel, the latter will be rotated, but electrical connection will be preserved, through the mechanism described, between the inner ends of the cord I I and the conductors leading to the lamp.

In Figs. 5 and 6 there is shown a modification of the means shown in the preceding views for enabling the detent arm to be released from engagement with the ratchet on the base of the reel, either by the act of lifting the lamp base from its support or by the manual disengagement of the detent arm from the ratchet. In the last mentioned views, 45 denotes a cupped bushing which is fitted within the upper wall [5 of the base and which has a push button 46 mounted for reciprocation therein and having a stem portion extending through the bottom thereof, there being 'a spring 41 interposed between the bottom of the head of the button and the cupped bottom of the bushing. 48 denotes a detent toothor proiection extending upwardly from the horizontal portion of a stem 50 which is shown as extending'into and secured to the push button 46. The

stem is provided with a slot 5| for the reception of an arm 52, which may be conveniently formed with a cup 53 and an arm 54, the latter arm being opposed to the arm 52 and pivoted to the side wall 10 of the base, as shown at 55. The cup 53 is provided with a stem 53 projecting centrally upwardly therefrom and forming a guide for the lower end of a spiral spring 56, the upper end of which surrounds a short stem projecting downwardly from the top portion Ill of the cover and presses against the said portion.

With the parts constructed and arranged as described, it will be evident that, when the lamp base is resting upon a suitable support, the spring 55 will be compressed by upward movement of the cup 53, thereby enabling the spring 41 to bring thedetent tooth 48 into engagement with one of the teeth of the ratchet formed on the bottom of the reel; also that, when the base is lifted from its support, the spring 55, which is of greater strength than the spring 41, will rock the cup 53 about its pivot, causing-the arm 52 -to engage the bottom wall of the slot 5|, thereby to depress the stem 50 against the action or the spring '41, thereby disengaging thedeten't tooth from the ratchet and permitting the reel to be wound, oriunwoun'd, according to the direction in which the lamp may be moved. i

It will be evident further that,iif it is desired to wind or unwind the reel without lifting the base, this may be effected by depressing the push button 46 manually, as is the case with the push button 24 V 'This. application is a continuationirr part of myxapplication Serial No. 393,210, filed- May 13. 1 941. 1

Havingthus described my invention, what I claim is:

1. In a device of the character described, the combination, with a'base having an elevated-upper portion and supporting means depending therefrom, of a real rotatably-supported within said supporting means and having means for supporting a cord or Wire wound thereupon, a spring connected to said reel for rotating the same in a direction to wind a cord or wire thereupon, the said reel being provided with ratchet teeth extending therearound, pawl mechanism comprising a detent, and means operative by the engagement of said 'base with a support on which said base is placed for engaging the detent with a ratchet tooth thereby to prevent rotation of the reel by said spring in one direction.

2. In a device of the character described, the combination, with a base having an elevated upper portion and supporting means depending therefrom, of a reel rotatably supported within said supporting means and having means for supporting a cord or wire wound thereupon, a spring connected to said reel for rotating the same in a direction to wind a cord or wire thereupon, the said reel being provided with ratchet teeth extending therearound, and pawl mechanism comprising a detent and a member for moving said detent into engagement with a tooth of said ratchet through the engagement of said member with a support on which the base is placed.

3. In a device of the character described, the combination, with a base having an elevated upper portion and supporting means depending therefrom, of a reel rotatably-supported within the said supporting means, a spring connected to said reel for rotating the same in adirection to wind a cord or wire thereupon, the said'reel being provided with ratchet teeth extending 'therearound, a pawl mechanism comprising a stem having a detent connected thereto and extending therefrom and adapted to engage a tooth of said ratchet, a member reciprocable withrespect to said stem and adapted to project below the supporting means for the base and to be moved upwardly by its engagement with the support upon which the said supporting means for the base is placed and having a portion adapted, when said member is depressed, to be held in engagement with the said arm, and a spring in engagement with the said portion of the said member for moving the saidportion and the member and the arm downwardly.

4. In the device set forth in claim 3, means for operating the stem independently of the first mentioned spring thereby to release the detent from engagement with a ratchet tooth while the means for supporting the lamp base is resting upon its support.

5. In a device of the character described, the combination, with a base having an elevated upper portion and supporting means depending therefrom, of a reel rotatably supported within the said supporting means, a spring connected to said reel for rotating the same in a direction to wind a cord or wire thereupon, the said reel being provided with ratchet teeth extending therearound, pawl mechanism comprising a stem having a detent connected thereto and extending therefrom and adapted to engage a tooth of said ratchet, a member reciprocable with respect to said stem and adapted to project below the supporting means for the base and to be moved upwardly by its engagement with the support upon which the said supporting means for the base is placed and having a portion adapted, when said member is depressed, to be held in engagement with the said arm, a spring in engagement with the said portion of the said member for moving the said portion and the member and the arm downwardly, and asecond spring also surrounding the said stem and tending to lift the same and the arm connected thereto, the second spring being weaker than the first-mentioned spring.

6. In a device of the character described, the combination, with a base having an elevated upper portion and supporting means depending therefrom, of a reel rotatably supported below said upper portion, a spring connected to said reel for rotating the same in a direction to wind a cord or wire thereupon, the said'reel being provided with an annular series of alternating downwardly projecting ratchet teeth extending entirely around a lower surface thereof which surrounds the support for said reel, pawl mechanism comprising a stern having a detent arm connected thereto and adapted to engagea tooth of said ratchet, a tubular guide having an abutment at its upper end and surrounding the lower portion of the stem and having a vertical slot through which the detent arm projects, said guide being adapted to project below the bottom of the supporting means for the base when the base is lifted from a support. a cupped bushing mounted in the said base and through the bottom of which the upper end of the stem extends, there being an abutment carried by the upper portion of the stem within the bushing, a spring interposed between the said abutment and the cupped bottom of the bushing, and a spring engaging the said abutment on the top of the tubular guide and exerting a downward pressure thereupon.

7. In a device of the character described, the

combination, with a base having'an elevated upper portion and supporting means depending therefrom, of a reel rotatably supported below said upper portion, a spring connected to said reel for rotating the same in a direction to wind a cord or wire thereupon, the said reelbeing provided with an annular series of alternating down wardly projecting ratchet teeth extendingentirely arounda lower surface thereof which surrounds the support for saidreel, pawl mechanism comprising a stem having a detent arm connected thereto and'adapted to engage a tooth of said ratchet, a tubular guide having an abutment at its upper end and surrounding the lower portion of the stem and having a vertical slot through which the detent arm projects, said guide being adapted to project below the bottom. of the supporting means for the base when the base is lifted from a support, a cupped bushing mounted in the said base and through the bottom of which the upper end of the stem extends, there being an abutment carried by the upper portion of the stem within the bushing, a spring interposed between the said abutment and the cupped bottom of the bushing, and a spring surrounding the lower portion of said bushing and the stem hav- I ing its upper end in engagement with an anchored abutment on the top of the tubular guide and its lower end in engagement with the upper portion of the tubular guide. 1

8. In a device of the character described, the combination, with a base'having an elevated upper portion and supporting means depending therefrom, of a reel rotatably supported below said upper portion, a spring connected to said reel for rotating the same in a direction to wind a cord or wire thereupon, the said reel beingprovided with an annular series of alternating downwardly projecting ratchet teeth extending entirely around a lower surface thereof which surrounds the support for said reel, pawl mechanism com prising a stem, a detent projecting from said stem and adapted to engage a tooth of said ratchet, the said stern having a slot providing upper and lower walls, a cupped bushing mounted in said base and extending downwardly thereinto, a push button reciprocably mounted in the said bushing and with which the said stem is connected, the said button having an abutment adjacent to its upper end, a spring surroundin the lower portion of said push button and engaging the abutment thereof at one end and the cupped bottom of the bushing at its other end, a cupped member having arms projecting outwardly therefrom, means pivotally supporting one of said arms from the said base, the other arm extending into and through said slot, and a spring having one end mounted within the said cup and its opposite end pressing against a portion of the said base, the second spring being of greater strength than the first mentioned spring and the cup being adapted to be projected below the base when the latter is raised from its support, whereby the arm connected thereto maypress the said stemdownwardly and disengage the detent from engagement with the said ratchet.

9. In a device of the character described, the combination, with a lamp having a base provided with downwardly extending supporting means, of a tube extending through and secured to the upper portion of said base, a bushing secured to the lower portion of said tube, a reel rotatably supported by said bushing, a spring connected to said reel and adapted to rotate the same in a direction to wind electrical conductors thereupon, electrical conductors leading upwardly through said tube for supplying current to a lamp, electrical conductors wound upon said reel, and means for effecting an electrical connection between the conductors wound upon the reel and the first mentioned conductors While the reel is beingrotated as well as when it is at rest, the last mentioned means comprising circular tracks of conducting material supported by and beneath said bushing and connected to the first mentioned 10

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2466128 *Mar 10, 1947Apr 5, 1949Striegel Roy MElectrical extension cord assembly
US2757404 *Jan 19, 1951Aug 7, 1956Kingston Products CorpCord reel
US3093342 *May 18, 1960Jun 11, 1963Walter Machine And Screw CompaIndustrial type reel and balancer
US7407128 *Aug 16, 2007Aug 5, 2008Hsi-Fan ChangCord reel box
US7530519 *Jul 14, 2004May 12, 2009Cobra Fixations Ccie Ltee - Cobra Anchors Co., Ltd.Vertically adjustable device for suspending an article from a ceiling
US8544623 *Sep 23, 2011Oct 1, 2013Ramon R. MurphyCord organizing system for hair shears
US20060285939 *Jul 14, 2004Dec 21, 2006Mcduff PierreVertically adjustable device for suspending an article from a ceiling
Classifications
U.S. Classification191/12.20R, 191/12.00R, 242/385.4
International ClassificationB65H75/42, B65H75/44, H02G11/02
Cooperative ClassificationH02G11/02, B65H75/4431, B65H75/4428, B65H75/42, B65H2701/537
European ClassificationB65H75/44C4B, H02G11/02, B65H75/44C4, B65H75/42