OpenTwo archives, queried live.
Every record below comes from The Met or Smithsonian Open Access and was filtered on that archive’s own rights field before it reached this page. 12 shown for “Patent Model for the Improvement in Ear-Rings” — 40 records examined, 21 dropped by the rights gate.
Archives queried 2026-09-05 23:43 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.The Metropolitan Museum of Art: HTTP 403 from collectionapi.metmuseum.org. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.
Patent Model for the Improvement in Ear-Rings
Artist not stated in the record · ca 1876
Ship Side Light, Patent Model
Artist not stated in the record · 1853
Holman Adding Machine
Holman, Calvin J. · 1874
1838 Mason's Patent Model of a Speeder for Roving Cotton
Artist not stated in the record · 1838-05-04
George W. N. Yost Typewriter Patent Model
Artist not stated in the record · 1885
1838 Yerkes's Patent Model of a Spindle and Flyer
Artist not stated in the record · 1838-06-12
Rotary Measure, U.S. Patent Office Model
Artist not stated in the record · 1876
Invention for Improvement in Rotary Printing Presses
Artist not stated in the record · ca 1847
Patent Model for an Improvement in Stop-Cylinder Presses
Artist not stated in the record · ca 1873
George Elsey's 1878 School Desk Juncture Improvement Patent Model
Artist not stated in the record · 1878
Patent Model for a Flatbed Cylinder Printing Press
Hoe, Richard March · ca 1845
1838 Parsons's Patent Model of a Cloth Shearing Machine
Artist not stated in the record · 1838-11-25
Where these records came from.
Two archives are wired, and only two. Each one is filtered on its own rights field — never on a title match, and never on the presence of an image file.
- The Met Collection API (Open Access)Rights field:
isPublicDomain. HTTP 403 from collectionapi.metmuseum.org. No records from this archive are shown for this query.Unavailable - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 762 matched · 40 examined · 21 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.12 shown
These figures describe the pass run at 2026-09-05 23:43 UTC, during this request. A completed pass is kept for 24 hours and replayed for an identical search, which is what keeps repeated queries inside Smithsonian’s 30-requests-per-hour allowance. A pass in which either archive failed to answer is never kept — an outage must not be replayed as though it were a finding about the catalogue.
Wikimedia Commons and the Library of Congress are deliberately not wired. Wikimedia was confirmed, on a live query, to return CC-BY material inside the same result set as genuine public domain works, and filtering it safely has not been designed yet. loc.gov was blocked by bot detection during the source evaluation, so its rights vocabulary has never been observed — and nothing here is built on a field nobody has read.
An image file is a rights claim. It never travels without its field.