Patent · 1886 · age 30

US Patent 334823: Commutator for dynamo-electric machines

Kept from en.wikisource.org · 2 files · 146 KBCall number TES PT1886.02

Provenance

Source: en.wikisource.orgalso patents.google.com
Retrieved: 1 October 2026
Source terms (summary): Wikisource: text under CC BY-SA; terms of use apply
Rights: Public domainPatent text by Tesla, who died in 1943.Basis: author death year 1943, under a life-plus-70-years rule, as of 2026; other rules, such as the United States publication-date rules, are not assessed.
Formats: HTML
Fingerprint: b480703ab2ae9085adfc6514b5e775a35c957b28fe1170b6760a33ada962d4besha256 of the file (64 characters). Any change to the file changes this code.
Cite as: Nikola Tesla, US Patent 334823: Commutator for dynamo-electric machines (1886). Long Keeping, call number TES PT1886.02. https://longkeeping.com/nikola-tesla/us-patent-334823-commutator-for-dynamo-electric-machines/

Unchanged since collected At the last check, on 2 October 2026, all 903 originals, this work's 2 files among them, matched the fingerprints recorded when they were collected. Each copy is re-checked by hand once a year; there is no automatic alert yet.

Notes on this copy

#2Machine-read text (OCR), not proofread, with no page images in the file to check it against.
#9Saved from Wikisource without a pinned revision number; the revision is recorded inside the file itself.

Original

wikisource_United_States_patent_334823.html

Open reading copy 79 KB Exact filePublic domain

Reading copy: the saved page with its pictures left out. A picture appears in the reading copy only once the library has recorded its licence, the licence is on the library's pass list, and it has been checked for a likeness. See its pictures at the source (another site). Exact file: the page byte for byte; its pictures do not load here.

Files

First pass, not a clearance.

Links inside these saved pages were written for the site they were saved from; some lead nowhere here.

File	Format	Size	Source	sha256	Label
wikisource_United_States_patent_334823.html exact filemain	HTML	82 KB	en.wikisource.org	b480703ab2ae9085adfc6514b5e775a35c957b28fe1170b6760a33ada962d4be	Public domainPatent text by Tesla, who died in 1943.Basis: author death year 1943, under a life-plus-70-years rule, as of 2026; other rules, such as the United States publication-date rules, are not assessed.Licence: CC BY-SA 4.0 (another site). Attribution: Wikisource contributors (another site).This is Wikisource's licence for its own contributions to this saved page, such as layout and notes. The work's text is labelled public domain, as this file's label shows.
googlepatents_US334823A.html exact file	HTML	64 KB	patents.google.com	febb841a60bd469a5b91c621ed1cd907b47022e35ff032d6524429ffd2239f24	Public domainPatent text by Tesla, who died in 1943.Basis: author death year 1943, under a life-plus-70-years rule, as of 2026; other rules, such as the United States publication-date rules, are not assessed.