US837512A - Electric hose signaling apparatus. - Google Patents

Description

PATENTED DEC. 4, 1906. W. G.- SEBLEY. ELECTRIC HOSE SIGNALING APPARATUS.

APPLICATION FILED NOV: 27. 1905.

' prep. STATES Parana enrich.

WILLIAM G. SEELEY, UF BROOKIJINE, MASSACHUSETTS.

- sine-rate HQSE SIGNALING aeeaearus.

no. es 7,512.

Specification of Letters Patent.

- Patented-Dec. a, 1906.

' Application filed November Z'L'IQOE. Serial No. 289,189.

ful Improvements in Electric Hose Signaling Apparatus,'of which the following is a specification.

My invention relates to the provision of hydraulic hose with electrical conductors or hne-wires by means of which signals may be transmitted along a line of hose, such arrangements being usually applied to fire-hose for the purpose of establishing communication between the man at the hose-nozzle and the engineer or other attendant at the supply end of the hose. It is well known that such hose elongates somewhat when filled with water under the service-pressure, and it has accordingly been the jfcustom to crimp the.

line-wires carried by the hose in order to prevent the elongation or bending of the hose from breaking the wires or severing them from their terminal connections. It has been found, however, that the repeated bendings to which the wires are thus subjected are apt to be localized to such an extent that portrons of the wires are straightened after a certam time and the wires themselves are broken.

My invention is accordingly designed to provide a simple and inexpensive arrangement whereby this localizing oft-he bending of the wires may be avoided and the elongations and contractions of the wires distributed with substantial uniformity throughout their lengths, so that the shape and arrangement originally given to the wires may be preserved throughoutthe life of the hose,

and to this end I attach the crimped or sinuous line-wires to the substance of the hose at a multitude of points along the length of the latter and between two of the plies or jackets thereof in such manner that these points of attachment are capable of separatmg and approaching one another as the hose elongates and contracts. By preference each or both of the line-wires is secured to a longitudinally-extensible strip of suitable.

material, which strip or strips with the attached wire or wires are then placed between any two of the plies, layers, or jackets of the hose, the result being that when thej hose elongates or contractsv the longitudinally-extensible strip yields with the adjacent plies and is thereby stretched with substantial unif formity throughout'its length or permitted to contract by its own elasticity, as the case may be, and by reason of the positive attach- I ment of the wires tot his strip their elongation also is distributed throughout their length, and they are thus prevented from becoming kinked, straightened, or displaced to any material extent, as wellas from being broken by the localizing and continued repetition of the bdending actions to which they are subjecte In some cases I cover the wires after they have been attached to the extensible strip above referred to with a second longitudinally-extensible strip which serves to protect the insulation of the wires by preventing them from rubbing. against the substance of the hose.

In the accompanying drawings, Figure 1 is a plan view of a portion of a longitudinallyextensible strip with. attached liIIG-WVI I'OS, illustrating one embodiment of my invention. Fig. 2 is asimilar view illustrating a modification. Fi 3 is a plan view illustrating another modification; and Fig. 4 is a crosssec tion through a double-jacket hose, showing the line-wires in place between the two jackets.

Referring to the drawings, 2 represents a strip of longitudinally-extensible and elastlc material, preferably sheet-rubber, and 3 represent a pair of insulated line wires crimped in the usual manner and attached to one face of this strip. This securing of the wires to the strip may be accomplished in any suitable manner, as by means of rubber-ceends to the strip 2 by cement or otherwise,

as in Fig. 2. The strips 4 and the cement may be used in conjunction, if desired.

In the modification shown in Fig. 3 the tacking-strips are replaced by a series of longer strips or bands 5, preferably made of rubber, each of which extends entirely around the inner jacket of the hose and overlies the wires 3, being preferably cemented to the subjacent parts. 6 represents a protecting-strip which is also longitudinally extensible and elastic and is preferably made of the" same material as the strip 2, which strip 6 is laid over the exposed wires and secured thereto or to the strip 2. The strip 6 is not essential; but in frictionally engaged and he case it is employed prefer to make it of the ets of a double-jacket hose, between which jackets the line-wires run lengthwise of the hose, and 9, represents the rubber lining of the inner jacket. The strip 2 is preferablycemented to the inner jacket 7; but this is not essential, since if said strip be merely laid between the inner and outer 'ackets it will be id thereby with Sufficient firmness to cause it to elongate and contact with the hose.

Instead of securing both wires 3 to the same stri 2 separate strips may obviously be employe for the two wires. ,In this case bare or uninsulated wires maybe used, and they may also be used even thoughthey are both attached to the same strip 2, provided they are secured at such a distance apart that there will be no chance of their coming in contact with one another. I prefer to employ separately-insulated wires in all cases, however. In some instances uncrimped line-wires have heretofore been wrapped-spirally around the hose, between-the jackets thereof, and a similar arrangement may be adopted for the strip orstrips 2 with the linewires attached, if desired. r

I claim ,as my invention 1. The combination with a length of hose of a longitudinally-extensible and elastic stripv interposed between two of the jackets 1 of the hose and one or more sinuous electrical conductors or line-wires attached to one of the faces of said strip, substantially as and for the purpose set forth.

2. The combination with a length of hose of a longitudinally-extensible and elastic strip interposed between two of the jackets of the hose, one or more sinuous electrical conductors or line-wires attached to one of scribed my name-this 24th day of November,

. WILLIAM G. SEELEY.)

Witnesses:

E. D. CHADwIoK, JOSEPH T. BRENNAN.

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