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Publication numberUS1247672 A
Publication typeGrant
Publication dateNov 27, 1917
Filing dateMar 29, 1913
Priority dateMar 29, 1913
Publication numberUS 1247672 A, US 1247672A, US-A-1247672, US1247672 A, US1247672A
InventorsClaus W Hallberg
Original AssigneeClaus W Hallberg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1247672 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented Nov. 27, 1917.

Illlllllllllllllm II III II I I'l I l A II All I I I I. lli? au CJDA'US W. EALLBEBG, OF CHICAGO, ILLINOIS.


Specification of Letters Patent.

Patented Nov. 2'7, IlWl'tt.

Application filed March 29, 1913. Serial No. 757,517.

new and useful Improvements in Telephone-- Conductors, of which the following is a full, clear, and exact description.

The invention relates to telephone-conductors and more particularly'to the conductors leading to a portable telephone set (transmitter and receiver).

It is now common practice to employ a portable set of instruments adapted to rest upon a desk or table and to use a flexible cord containing conductors between the portable set and the'ringer or box which is usually fixed to a wall or the like. In order to permit the telephone-set to be moved around, as desired, it is necessary to have a reach of cord, usually from 6 to 8 feet. This loose cord is objectionable around a desk, because it interferes with the free use thereof. The primary object of the invention is to provide a device for automatically taking up the conductor-cord between the ringerbox and the telephone-set, so that it will never be in the way or interfere with the free use of the desk.

The invention further designs to provide an improved automatic take-up device for this cord, in which the electrical connections for the conductors to the telephone-set are made, so that there will beno short-circuits and in which moving contacts in the circuit for speech-transmission are avoided.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings, Figure 1 is a perspective of a device embodying the invention and showing the manner 0 its use, one side of the drum-case being removed. Fig. 2 is a vertical transverse section of the automatic take-up device. Fig. 3 is a detail showing the connection between one of the springs and one of the supporting-bars in thedrumcase. .Fig. 4 is a detail plan of the leadingin connection secured to the drum-case.

A bracket a is suitably secured to the ringer-box or wall adjacent the call-box, and has a pintle a on which a drum-case b is pivotally sustained, the latter having a bracket fitting on said pintle, so that the automatic take-up device in said case will be free to swing laterally in any direction,

' manner.

according to the point where the telephoneset is used. Case 72 comprises sides I) and 6 both of which are removably connected to the body 6 by screws 6*. A pair of supporting-bars c, c are rigidly secured to the drum-case in suitable manner, and a spindle or fixed shaft 03 is secured in said bars.

A drum e is rotatable upon said shaft and comprises sides e of insulating material, a sleeve 6 also of insulating material and a metallic conductor-sleeve e fixed in sleeve 6 and journaled upon the shaft d. Convolute springs f and f at the outside of the drum-sides respectively, each haveone end connected to one of the supporting-strips c in the drum-case, and the other to an insulating sleeve 6 and.serve to automatically wind up the flexible-cord 9 containing the conductor-wires between the take-up device and the telephone-set. The cord 9 includes three electrical conductors which are connected in usual manner, to the telephone-set whlch comprises a stand it, a receiver k and a transmitter if, as usual in the art.

Usually three conductors are necessary in modern telephone-practice, two being used for a metallic circuit for speech-transmission and the third for a grounded signaling-circuit. The ground-conductor Ic leads into the case b and is secured to a post is which is connected to the spindle or shaft d by a wire is. A branch 70 of said conductor is secured to the cord g, so that the grounded connection will be conductors la, la, spindleahsleeve e and branch-conductor 70 One. of the conductors Z of the metalliccircuit is extended into the case b and is electrically connected to a post 1 which is connected to a spring fby a wire 1* which is connected to a post Z which is insulated from bare and serves to connect the outer end of said spring to the case. The inner end of said spring is electrically connected to conductor m which is included in the cord 9 and has its end secured to spring 0 by a screw m Conductor m is connected to the telephone-set through cord 9 in usual The other conductor m of the metallic circuit is connected to a post m on the case, which is connected to the other spring 7 by a conductor m which is connected to a post m to which spring f is secured. Spring f also serves as an electrical conductor. The inner end of said spring is maintained through connected to branch-conductor Z" by a I screw Z and said branch is included in the cord 9, and is electrically connected to (the telephone-set in usual manner.

In operation, the springs wil serve to automatically keep the conductor-cord g taut and by reason of utilizing the springs as conductors, the electrical connections, particularly those for speech-transmission, will be effectively maintained.

The invention thus exemplifies an automatic take-up device for the conductor-cord.

of a portable telephone-set which permits the entire set to be moved around as desired. When not in use, the cord will be kept taut and will be automatically taken up by the device, so that there will never be any loose conductor-cord between the telehone-set and the wall-connection or ringerox. The drum-case being pivotally connected to the bracket, permits the device to move so the plane of rotation willbe parallel to or in the. direction of the pull upon the cord and will avoid wearing the cord where it passes through slot 6 in the case. The springs employed to operate the take-up drum are utilized as conductors, so there will be no moving contacts in the circuit for speech-transmission, in the automatic take-up device. The device is simple in construction and may be readily installed.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination with a portable telephone-set, of a support, a drum onsaid support, three flexible cord conductors between the telephone-set and the drum, springs in the support for operating the drum and electrically connected to two of said conductors, respectively, three leading-in conductors, two of which are connected to the springs respectively and an electrical connection between the third cord-conductor and the third leading-in conductor. Y

2. The combination with a portable tele phone-set, of a pivotally sustained support, a drum in said support, three flexible conductors between the telephone-set and the drum springs in the support for operating the drum and electrically connected to two of said conductors respectively, three leading-in conductors two of which are connected to said springs respectively, and an electrical connection between the third cord conductor and the third leading-conductor.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2440719 *Sep 16, 1944May 4, 1948Karp Marvin IAutomatic wire take-up device
US2573617 *Jul 12, 1949Oct 30, 1951Bell Telephone Labor IncTelephone dial lamp
US2740037 *May 14, 1952Mar 27, 1956Standard Oil CoMachine lighting
US3483898 *Jun 8, 1966Dec 16, 1969Int Standard Electric CorpRetractor
US4062608 *Mar 18, 1977Dec 13, 1977Arthur PierceTelephone handset cord storage apparatus
US4741033 *Mar 8, 1985Apr 26, 1988Kabushiki Kaisha ToshibaTelephone serving as both table mounted type and wall hung type
US4940859 *Jul 24, 1989Jul 10, 1990Daniel PetersonTelephone cord take-up reel assembly
US5453585 *Jul 20, 1994Sep 26, 1995Golden West Communications, Inc.Cable retraction system
US5590749 *Aug 30, 1993Jan 7, 1997Magic Electrical Products L.L.C.Electrical cord retraction device
US5600719 *Feb 14, 1996Feb 4, 1997Shape Inc.Portable storage device for a telephone line
US6019304 *Jan 6, 1998Feb 1, 2000Telefonix, Inc.Retractable reel with channeled ratchet mechanism
US6386906Mar 16, 1998May 14, 2002Telefonix IncCord management apparatus and method
US6616080Apr 28, 2000Sep 9, 2003Speculative Product Design, Inc.Retractable cord device
US6702077Feb 1, 2001Mar 9, 2004Restech, Inc.Nested cables and reel assembly
US6957978Jul 31, 2003Oct 25, 2005Drew ZollerCord retainer
US7108216Apr 11, 2003Sep 19, 2006Telefonix, Inc.Retractable cord reels for use with flat electrical cable
US7108544Sep 9, 2005Sep 19, 2006Drew ZollerCord retainer
U.S. Classification191/12.20R, 242/371, 38/142, 379/454, 439/4, 242/400
Cooperative ClassificationH02G11/02