US1328377A - Cable-clamp - Google Patents

Description

W. J. HISS.

CABLE CLAMP.

APPLICATION FILED FEB. 14, 1919- 1 ,328, 377' Patented Jan. 20, 1920.

I I INVENTOR BY [42% $1 Mm ATTORNEY UNITED STATES PATENT OFFICE.

WILLIAM J". HISS, OF NEW YORK, N. ASSIGNOR TO DIAMOND EXPANSION BOLT COMPANY, OF NEW YORK, N. A CORPORATION OF NEW YORK.

CABLECLAMP.

Specification of Letters Patent.

Patented Jan. 20, 1920.

Application filed February 14, 1919. Serial No. 277,003.

To all whom it may concern:

Be it known that I, WILLIAM J. Hrss, a citizen of the United States of America, and a resident of the borough of Manhattan, city, county, and State of New York, .have invented certain new and useful Improvements in Cable-Clamps, of which the fol lowing is a specification.

y invention relates to cable clamps which are used particularly to support cables along the face of walls, fences or any other suitable supports, and which while securely holding the cable do not injure or mar it.

My invention relates to such a cable clamp which can be manufactured at minimum cost out of comparatively light weight material yet one which will meet, with a wide margin of safety, all strains and stresses which may be thrown upon it under an abnormal load. Preferably though not necessarily I make my cable clamp out of a single integral piece of sheet metal of minimum thickness to reduce the cost of manufacture, and the amount of metal used.

My invention further relates to the com bination of such a cable clamp with a bridle ring which may be used in some positions, where it may be desirable to support a wire in addition to the cable.

My invention further relates to certain details of construction which will be more fully hereinafter described and pointed out in the claims.

Figure 1 is a vertical section through my cable clamp and a cable substantially on the line 11 of Fig. 2 looking in the direction of the arrows;

Fig. 2 is a front elevation;

Fig. 3 is a plan view of a blank from which I preferably form my cable clamp;

Fig. 4 is a vertical section showing a modification in which a bridle ring is used;

Fig. 5 is a vertical section of a modification;

Fig. 6 is a section substantially on the line 6-6 of Fig. 5 looking in the direction of the arrows;

Fig. 7 is a fragmentary sectional view of a modification.

In my invention I form a cable clamp 1 of comparatively thin metal so as to save material. This clamp is provided with a hook portion 2, a base 3, and a reinforcing member 4. This reinforcing member is preferably, though not necessarily, formed integral with the clamp 1.

In my preferred construction I take a blank 5, Fig. 3, of sheet metal and bend it in any suitable manner on the line 6 so that the portion 7 makes the hook 2 of the complete cable clamp. The portion 8 is bent at substantially right angle to the portion 7 so as to form the base 3. When the reinforcing member is formed integral with the clamp, which is the preferred construction, the blank is bent on the line 9 so that the portion 10 forms a reinforcin member which is bent back from the portion 8 making, in the finished clamp, the reinforcing flap 4. The blank is further bent on the line 11 so that the portion 12 of the blank forms the arm or wedge member 13 of the complete cable clamp. At the time the blank is bent, or subsequently, it is provided with registering holes 1414 for the reception of the wood screw 15, or other securing means, which pass through said holes 14-14 into the wall or other support 16.

The cable 17 is quite heavy and throws a considerable shearing strain upon that portion of the cable clamp 1 along the surface 18 where the hook portion 2 and the base 3 meet. To compensate for this heavy strain the ordinary form of cable clamp is made of comparatively heavy material throughout. This is a considerable waste of material and adds materially to the cost. In my invention I reinforce the cable clamp by wedging a reinforcing member beneath the hook portion 2. Preferably this reinforcing member is integral with the base 3 and in its simplest form is provided with an arm 13 which is of greater length than the distance between the securing screw 15 and the crotch of the cable hanger formed by the meeting of the base and hook portions.

In my preferred construction the holes 14-14 are so located that the head 19 of the screw 15 will over-lap slightly a portion of the arm 13 so that as this screw 15 is screwed home into the support 16 it will a large, portion of its Weight transmitted through the arm 13 directly to the securing wood screw 15, or other securing means. The tighter the screw 15 is screwed home the firmer bearing will the arm 13 have under the hook portion 2. While I preferably form the reinforcing member or flap 4 integral with the base 3 I may, in some cases, have a reinforcing member 20, Fig. 7, which is a separate member.

In some instances where it is desirable to support a telephone wire 21, Fig. 1, in addition to the cable 17 I may use a bridle ring 22 screwed into the lower portion of my cable clamp as shown in Fig. 4. The advantages of supporting a telephone wire by such a bridle ring and from a cable clamp or clip is described in full in my United States Letters Patent 792,591 dated June 20, 1905. It is to be distinctly understood, however, that while in certain locations and for certain work, the bridle ring 22 may be used in connection with my improved cable clamp, my invention is not to be confined to a cable clamp used in combination with a bridle ring.

In some cases and to further strengthen the construction I may form my cable clamp with a hook portion 23 provided with a rib 24, Figs. 5 and 6. In this modification the arm 25 of the reinforcing member or flap 26 is preferably provided with a notch 27 to accommodate or receive the reinforcing rib 24%.

Having thus described this invention in connection with illustrative embodiments thereof, to the details of which I do not desire to be limited, what is claimed as new and what is desired byLetters Patent is set forth in the appended claims.

What I claim is:

1. An article of manufacture comprising a sheet metal cable clamp, having a hook portion, a base, a flap bent back on the base and having an arm adapted to be sprung under the hook portion and form a saddle and support for said hook portion.

2. An article of manufacture comprising a cable clamp having a hook portion, a base, a flap having an arm bent out at its upper end and adapted to be sprung under the hook portion and form a saddle and support for said hook portion.

3. An article of manufacture comprising a sheet metal cable clamp having a hook portion, a base, a flap having a bent arm adapt ed to be sprung under the hook portion, said base and flap being provided with a hole for a screw near the junction of the flap and bent arm, and a screw having a head to contact with the bent arm to spring it under the hook portion.

at. An article of manufacture comprising a cable clamp having a hook portion, a base, and a flap provided with a bent arm, the flap and arm being of greater length than the base so that in securing the cable clamp the end of the bent arm is sprung under the hook and assists in taking some of the stress and strains from the junction of the hook and base and transmits these strains and stresses directly to the fastening means.

WILLIAM J. I-IISS. Witnesses:

E. P. BAYLY, MARTHA ELLISON.

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