US951354A - Strain-insulator. - Google Patents

Description

M. M; WOOD. Y STRAIN msum'ron. APPLICATION FILED BERT. 16, 1905.

' Patented Mar. 8, 1910.

Mtflesses:

,U/ r w U Be it known that l, l olii'rs ivnsrie Noon, a citizen of the United States, reside ing at Chicago, county of Cook, lllinois, have invented certain new and use till Improvements in. iffill1 lll].5tllfiil0.$, which the following is s specification.

This invention relates to the overhead structure of an electric railway, and pertio ularly to the insulating cou plings used to connect sect-ions of the guy wires which sup port the Working conductor. These devices usually (jOfllPl'lSQtWO eyee-olts mechanically connected by 21, mass insulating material so that there is no electrical connection tween them, and the esce ne oi? current through the guy-Wires is prevented. 132. the coupling is to be used. as a turn-buckle, one of the eyebolts is screwthreeded, and meshes with a nut embedded in the insul Lg ms,- i'erizil, Whilethe other eyoholt is usually swiveled.

The object of my invention is to provide a simple and inexpensive mode of connect ing the eyebolts in a coupling of t his kind, whether it be a simple strain insulator, or an insulating turnbuckle One of the eye bolts is secured in sleeve or of insulating material having e head or enlarge- .UlBIJlL .inclosed in a metallic cup which extends beyond said head and has an internal groove in the projecting portion. The other cyebolt is provided with a flange which into the cup and is secured there by stout open or cut ring sprung intothe'grocvc in the cup and overlapping the edge of the flange. In the case of o. turnbuckle, the bolt is loosely swiveled in said flange; the other bolt being screwed into a screw-tlir a led sleeve embedded in the insulating mm teriel. v

The accompanying.drawing represents a strain turnbuckle embodying my invention. F ure 1 is a lon 'itudmel section- F1 .3 D b v 7 .4 15 an end went, and EN. 3 shows the retain 111g r ng. The sleeve 1 having the nut 2 at one end and the flange 3 at the other, the eyebolt l screwed into said nut the bod 5 of'msn 7 .7 lotion molded around the sleeve and hzwmg a head 6 incloslng the flange 3, and the cup 7 surroundln said head with a flan e '8 b Q overlapping the flange 3 and having the proectmg edge 9-nr0v1ded with internal shoulder 10', are all old and Well known in insulators heretofore )1 the semi-circula s outer corner groove ll.

and Jlllllg overleppzh 12 which is \i-ili'iS securely heldi i bolt vthe cup 7. l2 serves as the flange of an eyei t of :1 turnbuckle the bolt .e to SV/il JQl in said plate. To accompi this, a circular head or collar 15 fin-med on or attached to the bolt under he plate, which is preferably countersunk sci to receive said head. At end of l bolt is the eye 16. This m, 'n which the bolt and its flange I ieces, may be used, it desired, in non --S;V1\"el11l; strain insulators. The two parts are preferably assembled by plac- I by Letters Patent of the llnited States, is,

1. A strain insulator having a bodyof insulntiomu metallic cup thereon having an internal groove. :1 plate inserted in said cup and having bowled coriler opposite said groove, :1 1'01 nininp; ring sprung into said groove and engaging the beveled corner of the plate, and bolls connected with said body and plate. I T

2. An. insulating turnlmchle lmving a body of insulation. :1 metallic cup thereon having an internal groove, :1 piste insertcd'in said. cup, :1 retaining ring sprung into said groove, and an eycbolt swivelerl in said plate.

3. An insulating turnbuckle having a body of insulation, :1 metallic cup thereon having an internal shoulde uni an ii'iternal groove, 2i plate resting mfg ving u bei'eleu corner opposite. sziid k )OVL. a ring sprung into said groove and overlapping the beveled corner of said plate,

til eyebolt swiveled in said plate.

in insulating tiiurnhuclzle having" ebody inst Fiilld shoulder and the here-led dge-ct the plate of insulation W1 and GI C-Rlli 131.1

Images