1980 >> July >> Porcelain Insulator News  

Porcelain Insulator News
by Jack H. Tod, NIA #13

Reprinted from "INSULATORS - Crown Jewels of the Wire", July 1980, page 30

Dear Jack: 

I've gathered from a line put up in the 20's some large two-piece multis, very pretty, colors ranging from reddish-brown to tan. Usually the top and bottom parts don't match in color. These are 4-7/8" - 8-1/4" - 12" by 8-1/2" high. Would you have any idea as to their value? 

Another one I'm curious about is a reddish-brown one very much like U-695 except that the seat of the tie-wire groove is about straight up instead of curved, and, it appears to be made with thinner porcelain skirts.

I've traded these up to around $15 trade value, but would like your opinion on what they should be worth. 
Ben Kirsten, NIA #1991 
Grand Junction, Colo. 

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Dear Ben: 

Your items similar U-695 sound like nice items, and I'd say your trade value is in the right ballpark, Cook Porcelain Co. was noted for these straight-side tie-wire grooves on their larger insulators (see U-742, U-768, U- 773, all Cook designs). However, some other companies also did the same thing on some styles, notably Locke, and also O-B on their large multiparts of earlier years. 

Those large old multis sure are pretty things, yet I've never had any luck selling them at any price! Every collector who runs into them in the wilds brings them home to use as pretty driveway anchors, and I also have a few around the edge of the patio for ornamentation. I had quite a few very pretty Lockes just like yours and took some to shows to try to sell them for even a few dollars each. At the third show, I finally made a fellow take one for $1 as a penalty for asking me for a cold beer. At the fourth show, even that would not work, and when I left, I put the last several of them on the table for the janitor to worry about. 

I really love the ones I do have, and others like theirs too, but they aren't very much of a collector barter item. The exception to the rule is that the very early classic multis such as the New Lexington lilly shells and crude Fred Locke items can be worth considerable money and are eagerly purchased by numerous collectors. If you want to ship one by U.P.S., make sure you have a very sturdy crate and a very fat piggy bank for the freight tab. 

Jack


Dear Jack: 

... and I have an insulator identical to the U-935 Imperial (dated 7-29-99) which has a top firing rest. Does this particular insulator have any value enhancement because of the top rest? Also, why is this insulator made with a top rest as opposed to a normal U-935? 
Adam Stoddard, NIA #1197 
Round Lake, NY 

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Dear Adam: 

I really don't think collectors make any value distinction between specimen of same styles when the firing rest is at the top or bottom, even if it's generally always one way and rarely the other. But we sometimes do make special note of it, especially an these early specimens, trying to learn more about the sequence of events back then. 

But even so, the location of the firing rest isn't a very reliable indicator of vintage etc. Manufacturers from the 1890's to the present have used whatever firing surface seemed less objectionable for the particular style or whichever setting surface resulted in best stability as the insulator passed through the firing process. Some fairly modern styles come both ways, either petticoat rest or top rest. It's possible customer preference was involved in some of this, but I rather imagine it was generally always a case of the factory doing their own thing in their own way at that particular moment.

Jack


Dear Jack:

I recently attended the collectible show in Wheaton, Ill. Had a lot of fun. I picked up a couple of rack spools with unusual markings as I've shown with the enclosed pencil rubbings. The Circle-L marking is stamped (incise) on a yellow-brown spool, and the "B-J.97" is stamped (incise) around the hole of a dark brown spool. I can't recall seeing them before, so I thought you might like to know about them. I and another porcelain collector went through several books and couldn't locate either. 
Michael T. McLaughlin 
Warsaw, Indiana

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Dear Michael: 

I was getting to be a bit proud of having attributed nearly all the rack spool markings ever reported to me, but you've sure loused up my batting average with these. Maybe one of our readers recognizes one or both of them.

Jack


Dear Jack: 

I don't usually bother with porcelain insulators, but I found this big cable top, and it has been bothering me since. I don't have any porcelain books, or I could probably identify its shape and find the U- number. I've enclosed a drawing of it and would appreciate any information on it, and also an estimate of its value. The glaze is a light brown, with "turning" marks all the way around the main body part of it.

I secured it from a dead line on a high voltage pole in East Rutherford, NJ. It was in an old paint factory by the electric feed line going into the plant. There are more there, plus clear glass CD-164, 214 & 252. Another company is taking the place over to use it for storage of mopeds, so they have no use for these insulators. 

The insulator has a fairly large marking of an insulator insignia with the word "VICTOR". I forgot, but what does the "R=oo" in this marking mean? 
Ken Crawford 
East Rutherford, NJ 

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Dear Ken: 

This is U-929, a glazeweld (as shown in the U- drawing above), and it was catalogued in 1913 as the Locke #3-1/2. The particular marking on yours was used from about 1905 up to some unknown date between there and 1922, but the light brown glaze on yours would seem to indicate vintage more near the 1905 end of this time span.

I have an identical insulator, same marking, but a dark mahogany glaze, and I'd date it later than yours. Ray Klingensmith has a U-929 with light tan glaze, but with the plain "VICTOR" marking, and it would be earlier than yours.

The "R=oo" in the marking (Locke's trademark of that era) is the mathematical equation of "Resistance=Infinity" which is a classical overstatement of the Fred Locke variety. Oddly, it was 1928 before General Electric became embarrassed enough by this wild claim for perfection to eliminate any such reference from their markings. To say that any insulator has infinite leakage resistance is about like saying the moon is an infinite distance from the earth just because it's a lot, further from the U.S. than is Berlin or Tokyo. 

Yes, you'd better be a believer that this in a goody insulator, and I'd guess the trade value of your variety of these would be in the $15 range. It would be nice if you could rescue the other remaining ones before they get swept away by "progress". Regarding the combination of those clear glass items and these porcelains on the same poles, I'd have to say "brown is beautiful" in this case!

Jack


Dear Jack:

 ... and it might also be of interest to other collectors that we are using skyglaze multipart pin types with both the underglaze PP and KNOX marking an them. The logos are stamped on the units with blue ink. 
Mark A. Miner 
Longmont, Colorado 

Reference CJ Dec. 1978, page 21, Porcelain Products Co. (Carey, Ohio) bought Knox Porcelain Corp. (Knoxville, Tenn.) in September 1975 and started marking all products with both the PP Co. and KNOX logos. Mark seems to infer that the multis his crew is installing have both markings separately, not one integral handstamp with both. I can't recall getting a report from anyone of finding any smaller unipart insulator with the dual marking. 

Jack



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