Contributed by Maine Historical Society
- MMN #12544
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Description
The Portland Company produced W.H.C. automatic voltage regulators, an important product for factories to use in operating machinery with either direct or alternating current.
"W.H.C." is the initials of the inventor, William H. Chapman of Portland.
About This Item
- Title: W.H.C. Automatic Voltage Regulators, Portland Company, ca. 1904
- Creator: Portland Company
- Creation Date: circa 1904
- Subject Date: circa 1904
- Location: Portland, Cumberland County, ME
- Media: Ink on paper, Photographic print
- Local Code: Coll. 242, Box 54 Folder 54/15
- Collection: Portland Company records
- Object Type: Image
Cross Reference Searches
Standardized Subject Headings
- Electricity--Maine--Portland
- Manufacturing industry--Maine--Portland
- Technological innovations
- Inventions
- Electric generators--Technological innovations
- Advertisements--Maine--Portland
- Portland Company (Me.)--Manufactures
- Metalworking industry--Maine--Portland
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For more information about this item, contact:
Maine Historical Society485 Congress Street, Portland, ME 04101
(207) 774-1822 x230
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