This is the department of the Museum where the machines worked. Dog powers were advertised by name, listed in a merchant’s inventory, built from published plans, and run in real wash-houses: a reader of 1872 wrote in that “suffice it to say the dog does the work.” The hope-gap here was never the physics — it was the word “effortless,” and the dog’s opinion of it.
Within: 72 patents registered, 1818–1914, of which 17 name the dog outright; the pre-patent centuries of the turnspit; the salesroom that proves the trade; and the retirement, which arrived by catalog.
Dr. Caius catalogs the kitchen dog in 1576. Bewick engraves him; Jesse watches him hide on his working day. Machinery retires him once — Bewick’s “more certain method” takes the kitchen — and the wheel waits.
American patentees rebuild the wheel for butter. The register bulges exactly when the dealers advertise and the farm press prints working drawings:
Patents per decade in our register; the dark bars are the boom.
No march of liberation appears in the records we checked — one Broadway cider-mill case is the docket. The Sears catalog of 1912 lists no dog powers and carries ninety-eight gasoline-engine matches, led by one at $29.95, “WELL NAMED.” The job disappears from the catalogs we searched.
Unlike the Museum’s other departments, the Evidence Ledgers here contain real YES rows: dealers’ advertisements of 1869–70, a Honolulu merchant’s listing of 1859, an illustrated build-your-own feature of 1870, a farm wife’s 1872 letter, and a machine a Nebraska museum still displays. The proof is racked in The Salesroom.
Endless belts and chains. The dog walks to nowhere; the butter arrives anyway.
Wheels and platform-disks turned by walking — the squirrel-cage principle, sized for the family dog.
Hager & Grove, 1868: the patent that promised to 'utilize the surplus energy of household-dogs' — the thesis statement of the whol…
Frederick K. Traxler's 1878 dog-power: stepping-blocks curved to the dog's foot — comfort engineered in the service of a steeper h…
David I. Kuhn's 1880 dog-power: a wheel of buggy parts, a railing that compels the dog outward, and a dial graduated in gallons of…
The founding numbered dog-power patent, 1859 — with the dog drawn on the sheet and 'Horse Power' engraved above him.…
The dog was promoted to friend.
A collection of THE MUSEUM OF HOPEFUL MACHINES