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#2763      Slot top insulator with screw cap.     Dark gray.

  Lot # 2763
Listing Image
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Details
  • Lot # 2763
  • System ID # 630900
  • End Date
  • Start Date
Description

#2763      Slot top insulator with screw cap.    T.H.IV.    T.8.IV.     Dark gray.

Insulator height: 3-1/2 inches.  Insulator and pin mounted on a wood display unit measures 6-5/8 inches in height. 

Marked on top of the screw cap: "T.H.IV."  Marked on the insulator base: "T.8.IV."

From Great Britain.  Once part of Keith Neal's collection, later purchased by Marilyn Albers after Keith's passing, and still later became a part of the Jim & Lis Bergman collection after Marilyn passed.

Keith Neal, in his book book titled "Railway and Other Rare Insulators" describes this insulator on page 15, Figures 16a & 16b: "There is a rare form of railway insulator which is made of an early hard compound of  rubber (Fig 16a and b).  It was used on the Caledonian Railway.  It is a two pice screw top insulator which either takes a wire in the slot, at the top which is held in place  by the screw being turned down onto it, or alternatively it has two grooves.  This allows it to be used either for line carrying or terminal work." 

The principle of this design is quite similar to that of the North American glass CD 207, which has a very similar slotted top for receiving the line wire and a screw cap which binds the wire.

Keith Neal states this insulator came from a short branch line at Wiston in Lanarkshire.

Excellent overall condition. 

From the collection of Jim & Lis Bergman.