The story
The eponymous product was a sophisticated safety razor which was promoted with the slogan "The razor that is stropped and honed in its case".
The case was a rigid rectangular frame enclosed by two detachable lids; one lid carried a stone and the other a leather. The lids could not be interchanged. With a lid removed, oscillating a handle drove a shaft along the frame. In both directions pinions on the shaft engaged with racks on the case to rotate the shaft to either push the blade forward against the stone or drag it against the strop. It was easy to use, fast and safe. Sharpening was noisy as each change of direction rotated the blade to slap against stone or leather.
The blade was about the size of a conventional disposable blade but was solid, hollow ground and not disposable, and it incorporated a safety guard.
The company's principal market was a 21st birthday present for a young man. Sales declined with the rise of electric shaving.
The Rolls trademark, "The Whetter", was registered in the US in 1950; the claimed first use was 1922. The US patent for the method of attaching the blade to the handle was filed in 1925 and issued in 1930. The name "Rolls Razor (1927) Ltd." was used in advertising. The razor was still manufactured and sold until 1958, when the company was purchased by entrepreneur/corporate raider John Bloom, who decided to focus on washing machines rather than the razor.
Although Rolls Razor had no connection to the Rolls-Royce company, the name was chosen to evoke the "Rolls" image of luxury and quality. The factory address was 255 Cricklewood Broadway, London, NW2, with showrooms located at 197a, Regent St., London, W1. A US importer was Lee & Schiffer, East 44th St., New York City. By 1937 the US distributor was Rolls Razor, Inc., 305 East 45th St., New York.
Rolls Razors, Ltd. made several models with variations based solely on casing material, finish and shape. The earliest models have a pebble-finish metal case. The nickel-plated Imperial No. 2 is the most common, along with the silver-plated Imperial which was packaged with a hard leatherette storage box. During World War II, the case was made all aluminium. Older razors, pre-1930, do not have a Greek key pattern on the case. A gold-plated case was made before 1930, but is very rare. The two main shape variations were the "standard" Imperial which had a flat boxy shape with rounded corners and the Viscount which had a softer profile with shaped sides and rounded corners.
The case design evolved to a pattern of parallel zig-zag lines. Later razors have a three-row Greek key design and with "The Whetter" trademark near the end of the case. These cases measure 2+3⁄4 × 6 inches. The Viscount case design has a single Greek key row. The corners of the case are more rounded (about a 5⁄8-inch radius) than previous Rolls. The case dimensions are 2+7⁄8 × 6+1⁄4 inches.
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By 1951, Rolls was also advertising the Viceroy Electric Dry shaver, or, the ad said, if you have "no electricity... ask for the Viceroy non-electric mechanical dry shaver... Press the lever and shave!" This was a mechanical version of the dry shaver that was operated by repeatedly squeezing a lever on the handle.
The Rolls Razor was successful enough that it had a similar British competitor, The Darwin, made by Darwins Ltd. (or Darwin, Ltd.; both spellings were used), Fitzwilliam Works, Sheffield, England. US patents were filed in 1933 and issued in 1935. A British patent was issued in 1934. The Darwin case is longer and narrower than the Rolls. Darwin models include "Universal" and "De Luxe".
From Wikipedia’s article on Rolls Razor, shared under CC BY-SA 4.0.3