US2168310A

US2168310A - Portable electric communication network

Info

Publication number: US2168310A
Application number: US133401A
Authority: US
Inventors: Harry R Allensworth
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-03-27
Filing date: 1937-03-27
Publication date: 1939-08-08
Anticipated expiration: 1956-08-08

Description

8, 1939- H. R. ALLENSWORTH 2,168,310

PORTABLE ELECTRIC COMMUNICATION NETWORK Filed March 27 1957 FIG I INVENTOR HARRY R ALLENSWORTH BY MM ATTORNEY Patented Aug. 8, 1939 UNITED STATES PATENT OFFICE Harry R. Allensworth, Columbus, Ohio Application March 27,

16 Claims.

My invention relates to electric communication networks and more particularly to portable electric communication networks and has for its object new and novel combinations and new and novel assembly of constituent elements whereby all desirable communication characteristics of non-portable networks are comprised in portable networks making possible and available, from and to such portable networks, communication comparable to that enjoyed by the use of the best of the contemporaneous conventional nonportable networks.

A further object of my invention is to make available for use, particularly in emergency communication, portable communication networks purposing high quality telephonic communication.

According to my invention these objects are attained by new and novel means comprising a separable and integral electric communication network comprising connecting means, a transformer, capacitor, signaling device and a tele phone hand set comprising a telephone receiver, telephone transmitter and means of actuating said signaling device.

My invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawing forming a part of this application; with the understanding, however, that the invention is not confined to the practical application herein selected for purposes of illustration or to the particular network or hand set therein shown nor is the invention confined to any strict conformity with the showing of the drawing which may be changed or modified so long as such changes and/or modifications mark no material departure from the salient features of the invention within the scope of the appended claims.

Illustrative of one of the important practical applications of my invention: Let it be assumed: Properly equipped signal circuits such as, for ex ample, fire alarm signal (box) circuits, to be available; also an adequately boxed community. Police cars, motor cycles, fire department vehicular equipment, etc., supplied with the portable communication network herein described will be always, in the more congested areas of the community, within the distance of a half city block; and in outlying sections, within one thousand feet, of communication facilities connecting immediately to headquarters and, through headquarters communication equipment, to any telephone in the community or beyond.

This provides two-way communication between 1937, Serial No. 133,401

police radio cars, and other radio-equipped vehicular equipment, and the radio broadcasting station and/or headquarters. Upon the radio station broadcasting the proper call or signal the car or cars designated by the call or signal move to the nearest signal box and immediate communication with headquarters and/or the radio station is established; the ensuing communication having, as compared with two-way radio communication, all the advantages of secrecy.

Additionally, separate telephone circuits may be provided with suitable jacks at convenient places and trouble-men, taxicabs, delivery vehicles, etc., supplied with the portable communication network herein described will be at all times within reasonably close proximity to communication facilities connecting direct to their base of operations.

Fig. 1 shows a schematic circuit diagram of a preferred arrangement of the invention.

Fig. 2 is a pictorial representation of the invention which pictorial representation, for purpose of enhancing its illustrative value, is not drawn to scale. Like parts bear like reference letters or numerals in both Fig. 1 and Fig. 2.

Referring now to the accompanying drawing: Figure 1 is a schematic delineation of one preferred type of portable electric communication network comprising telephone handset HS comprising transmitter T and receiver R; push button switch I, actuated by push button PB; four conductor cord 2; transformer windings Pl, P2, P3 and S; capacitor C; impulse emitter 4 here shown in the form of a short circuiting relay, which may however take the form of the well known electric buzzer; two conductor cord 3; and suitable connecting means (clips or plug, etc.) here shown as plug 5.

Pi, P2 and P3 are three primary windings of a four winding transformer; S, the fourth winding, is secondary to Pl, P2 and P3. The three said primary windings together with telephone transmitter T are so connected as to form a divided circuit bridged by condenser C at points 6 and '1.

Referring to Figure 2; HS is a telephone hand set comprising, in addition to a telephone transmitter and telephone receiver, push button switch shown as l in Figure 1. PB is a push button the operation of which actuates said push putton switch. 2' is a four conductor cord connecting the transmitter, receiver and push button switch comprised in HS and network elements contained in 8. 3 is a two conductor cord connecting network elements contained in 8 with suitable connecting means here shown as plug 5. 8 is a small compact container or housing in the form of a case, can, capsule, cartridge or the like which container houses and incases, in very small volume, a transformer, capacitor and impulse emitter (one example of which is shown in Figure 1 as PI, P2, P3, S, C and 4). The total volume of this capsular container or capsule does not appreciably exceed seven (7.5 to 10) cubic inches. Preferably, though not necessarily, it is cylindrical or tubular in shape. In cylindrical form it would not exceed six (6) inches in length by 1.25 to 1.5 inch internal diameter. The average mans hand could easily completely enclose it, gripped in the fist. This is the form illustrated and these are the preferred proportions. This cartridge is adapted to be inserted at any desired point in the conductor cord which normally connects the hand set and plug. In assembling or manufacturing the invention in the plant the multi-conductor cord of the portable telephone has built into it as an integral part forming a slight cylindrical enlargement the capsule containing the network, the four wires at one end being permanently connected to corresponding conductors in the handset portion of the cord, while the two wires at the opposite end are permanently connected to corresponding conductors in the connector portion of the cord. The capsule and cord are an integral structure, the capsule constituting, actually, only a slight increase or swell in the diameter of the cord and yet containing the complete operative network, contributing functions and operations wholly lacking and impossible without it. By combining the capsule integrally in the cord in this way the entire network assembly with all its advantages is contributed to the cord with no dimensional change in the cord except that slight increase in diameter for only a few inches of its length. By using a cylindrical capsular construction the cord characteristics as to shape are not changed, the ends being rounded ofi and merged in the cord, of course. In production, the capsule is built into the cord. While the cylindrical form has many advantages and is decidedly the preferred construction, it will be understood that a similar capsule of rectangular, elliptical, or other non-cylindrical cross section may be used. Likewise, while the dimensions of approximately 1.25 to 1.5 inch diameter and approximately 6 inch length are preferred it will be understood that they may be varied considerably while still not increasing the total capsule volume; and cord flexibility is fully maintained.

What is claimed is:

1. In combination, a portable telephone cord and a capsule suspended thereby and integrally built into said cord intermediate of its ends and containing a network establishing communication between the parts of said cord.

2. In combination, a portable telephone cord and a capsule of a volume not appreciably exceeding seven and one-half to ten cubic inches integrally built into said cord intermediate of its ends suspended thereby and containing a network establishing communication between the parts of said cord.

3. In combination, a portable telephone cord provided with a slightly enlarged portion suspended thereby intermediate of its ends, said enlarged portion containing a network establishing communication between the parts of said cord.

4. In combination, a portable telephone cord provided with a capsular enlargement suspended thereby intermediate of its ends and approximately concentric with said cord, and a network in said enlargement establishing communication between said ends.

5. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and approximately concentric therewith, and a network in said enlargement establishing communication between said ends.

6. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends approximately concentric therewith and having a total volume not appreciably in excess of seven and one-half to ten cubic inches and a network in said enlargement establishing communication between said ends.

7. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and a network in said enlargement and establishing communication between said ends, and means controlling the functions of said network.

8. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and a network in said enlargement and establishing communication between said ends, said network comprising means for initiating signal impulses in said network.

9. In combination, a portable telephone cordhaving a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and a network in said enlargement and establishing communication between said ends, said network comprising means for initiating undulatory signal impulses in said network.

10. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and a network in said-enlargement and establishing communication between said ends, said network comprising means for initiating undulatory signal'impulse sequences in said network.

11. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and a network in said enlargement and establishing communication between said ends, and means for shunting an element of said network.

12. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate ofits ends and a network in said enlargement and establishing communication between said ends, said network comprising a transformer and impulse emitting means.

13. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and a network in said enlargement and establishing communication between said ends, said network comprising a divided circuit, a condenser bridging said circuit, and impulse emit ting means.

14. In combination,.a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and a network in said enlargement and establishing communication between said ends, said network comprising impulse emitting means, a handset in communication with said network through said cord, and a switch in said handset for putting said impulse emitting means in series relation with conductor leads through said cord.

15. In combination, a portable telephone cord having a capsular enlargement suspended thereby and integrally built thereinto intermediate of its ends and an electric communication network in said enlargement establishing communication between said ends, said network comprising a divided circuit, a condenser bridging said circuit, a transformer and impulse emitting means, a handset in communication with said network through said cord, and means carried by said handset for putting said impulse emitting means in series relation with wires of said cord and one winding of said transformer and for short circuiting the receiver of said handset and one winding of said transformer.

16. A portable telephone cord comprising a telephone network and a capsular enlargement within said cord suspended thereby and integrally built thereinto and containing said network, said network establishing communication through said cord.

HARRY R. ALLENSWORTH.