Mobility and Everyday Transport Patent Memory

An indexable Sprint 7 backfill cluster for child mobility, caregiving transport, street movement, and assignment records.

Cluster thesis

Mobility and everyday transport

Everyday transport is not only railroads and engines. A child carriage can expose caregiving labor, urban movement, sun exposure, attendant use, assignment interests, and the practical design of daily mobility.

Related patent holders

William H. Richardson / 405599 Lewis H. Latimer / 147363 Alexander Miles / 371207

Patent records

Source-led record cards

These cards show patent-record facts and review status without promoting final holder rank.

Grant rank 15Holder rank 13utility patentmedium high

147363: Improvement in Water-Closets for Railroad-Cars

Lewis H. Latimer and Charles W. Brown / 1874-02-10

Chronological Latimer profile starts with the co-invented railroad-car water-closet patent and preserves Charles W. Brown in the record.

Residence: Somerville / Salem, Massachusetts
Category: railroad-car systems
Source status: medium high
Primary sources: 2 mapped

Backlog priority 5Not chronological rankutility patentmedium high

371207: Elevator

Alexander Miles / 1887-10-11

Backlog priority row, not a chronological rank. The patent supports an elevator-systems profile while biography and impact claims remain source-separated.

Residence: Duluth, Minnesota
Category: elevator systems / public safety
Source status: medium high
Backlog status: indexable_profile_candidate
Primary sources: 1 mapped

backfill_candidateSprint priority 2Not public rankutility patentmedium high

405599: Child's Carriage

William H. Richardson / 1889-06-18

Sprint 7 backfill record. The patent row supports reversible child-carriage design and preserves assignment interests.

Residence: Baltimore, Maryland
Category: child mobility / caregiving transport
Source status: medium high
Chronology handling: backfill_candidate
Cluster: Mobility and everyday transport
Assignee: John M. McClintock and Henry T. Meloney / two-thirds interest assignees
Primary sources: 1 mapped

Proof limits

What this cluster can and cannot prove.

What these records can prove

Richardson's reversible child-carriage patent row.
Assignment interests recorded to John M. McClintock and Henry T. Meloney.
A mobility lane that can connect child carriages to broader public-life and transport records without collapsing the categories.

What remains under review

Additional Richardson public biography and identity-source trail.
Commercial manufacture or carriage-market use.
How to connect caregiving mobility to other transport patents without overstating chronology.

Co-inventor and assignee notes

The Richardson route preserves two-thirds assignment interests as recorded.
Assignment does not equal invention, ownership benefit, licensing, or economic outcome without separate proof.

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Mobility and Everyday Transport Patent Memory