U-181-190

(Specialty styles including no-tie designs)
U-181
Manufacturer or Marking
No Name (Fred Locke) (USA)
U-181
Size: 60mm X 104mm (2 x 4 )
Example in Photo: No Name (Fred Locke) (USA)
Photo Credit: Elton Gish
Digitally repaired by: Shaun Kotlarsky
Patent: 726,846 - Patented May 5, 1903
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U-182A/B
Manufacturer or Marking
No Name (Roberts patent) (USA)
MACY INSULATOR MACY IND (Square D) (USA)

NOTE: in 2008 and older reference books, there was a U-124A/B listed. It is Identical to the U-182A/B so is now part of the U-182A/B listing.
U-182A/B
Size: 57mm X 60mm X 73mm (2 ¼ x 2 ¾ x 2 )
Example in Photo: No Name (Roberts patent) (USA)
Photo Credit: Elton Gish
Patent: 1,305,168 - Patented May 27, 1919
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U-183
Manufacturer or Marking
PAT. AUG.3/1909 (USA)
U-183
Size: 65mm X 76mm (2 9/16 x 3)
Example in Photo: PAT. AUG.3/1909 (USA)
Photo Credit: Ken Willick
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U-183A
Manufacturer or Marking
No Name (Square D) (USA)
L FUNK PAT PEND (Square D) (USA)
U-183A
Size: 82mm X 127mm (3 ¼ x 5)
Example in Photo: L FUNK PAT PEND (Square D) (USA)
Photo Credit: Elton Gish
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U-184
Manufacturer or Marking
Harlo Patent (USA)
U-184
Size: 63mm X 88mm (2 ½ x 3 ½)
Example in Photo: Harlo Patent (USA)
Photo Credit: Elton Gish
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U-185
Manufacturer or Marking
Sindinger Patent (USA)
U-185
Size: 53mm X 88mm (2 x 3 ½)
Example in Photo: Sindinger Patent (USA)
Photo Credit: Rick Soller
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U-185A
Manufacturer or Marking
No Name (Sindinger Patent, Pottery Models Only) (USA)
U-185A
Size: 66mm X 73mm (2 x 2 ⅞)
Example in Photo: No Name (Sindinger Patent, Pottery Models Only) (USA)
Photo Credit: Elton Gish
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U-186
Manufacturer or Marking
Purkey Patent (USA)
O-B, Purkey Patent (USA)
U-186
Size: 76mm X 117mm (3 x 4 ⅝)
Example in Photo: Purkey Patent (USA)
Photo Credit: Shaun Kotlarsky
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U-187
Manufacturer or Marking
No Name (USA)
No Name (Dry Process) (USA)
Pierce Patent (10-4-10 on cap, Dry Process Cap)
U-187
Size: 85mm X 149mm (3 x 5 ⅞)
Example in Photo: Pierce Patent (10-4-10 on cap, Dry Process Cap)
Photo Credit: Elton Gish
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U-188
Manufacturer or Marking
A.E.Co. INC. (USA)
AMERICAN ELECT. CO. INC. (USA)
U-188
Size: 98mm X 123mm (3 x 4 ⅞)
Example in Photo: A.E.Co. INC. (USA)
Photo Credit: Shaun Kotlarsky
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U-189
Manufacturer or Marking
PIERCE 1605/ PATD 5-18-15 (USA)
U-189
Size: 98mm X 123mm (3 x 4 ⅞)
Example in Photo: PIERCE 1605/ PATD 5-18-15
Photo Credit: National Insulator association
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U-189A
Manufacturer or Marking
M & H PAT. MAY 18 1915 (USA)
U-189A
Size: 85mm X 92mm (3 x 3 ⅝)
Example in Photo: M & H PAT. MAY 18 1915
Photo Credit: Ken Willick
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U-189B
Manufacturer or Marking
PIERCE 1605/ PATD 5-18-15 (USA)
U-189B
Size: 88mm X 76mm (3 ½ x 3)
Example in Photo: PIERCE 1605/ PATD 5-18-15 (USA)
Photo Credit: Mid Norris
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U-190
Manufacturer or Marking
No Name (USA)
Illinois Map (USA)
Size (Insulator): 82mm X 152mm (3 ¼ X 6)
Size (Cap): 92mm X 104mm (3 x 4 )
Variations: Click on the thumbnail above to see style variations
Variations: Tap on the thumbnail above to see style variations
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U-190A
Manufacturer or Marking
No Name (USA)
Illinois Map (USA)

NOTE: Would use the same cap as shown in the U-190 listing.
U-190A
Size: 95mm X 152mm (3 ¾ X 6)
Example in Photo: No Name (USA)
Photo Credit: Fred Collier
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U-190B
Manufacturer or Marking
No Name (USA)
Illinois Map (USA)

NOTE: Would use the same cap as shown in the U-190 listing.
U-190B
Size: 82mm X 190mm (3 ¼ X 7 ½)
Example in Photo: No Name (USA)
Photo Credit: Rick Soller
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