US 126029

Patent Overview: US 126,029 — "Improvement in Dumping-Cars"

Title: Improvement in Dumping-Cars
Patentee: David S. Cook, of Wrightsville, York county, Pennsylvania
Patent No.: US 126,029
Date of Patent: April 23, 1872
Source: https://patents.google.com/patent/[US126029](/patent/US126029)/en

Purpose. The patent describes a "double-dump eight-wheel ore or coal car" intended to facilitate unloading while keeping ore or coal clear of the axles and wheels. Cook states that transferring the load's weight from the car's center to the front and rear trucks or wheels relieves the center and prevents the car from sagging in the middle, "which effectually obviates the difficulties of carrying and unloading ore or coal as heretofore."

Plain-language scope. The car body has three apartments and two gate-ways (D D). Inclined bottoms (F and G) slope from the gate-ways toward the center and each end, up to the top edge of the outside frame (A), which has stays (B) and braces (C). The sides (H H) are angular, inclining from the top down to near the long beams (J J), where they become vertical so that material drops suddenly through the gate-ways "freely, rapidly, and without choking." The gates are closed and locked by a central upright key-rod (E). The two inclined bottoms (G G) form a triangular central apartment (K) for carrying tools, ropes, oil-cans, etc. Cook also states the car-bed "may also be used as a farm-wagon" with similar incline bottoms, sides, and gates for potatoes, corn, etc.

The single claim covers: "The double-dump car, having three apartments with two gate-ways D D, incline sides H H, and central angular apartment K, when constructed and operated as herein described, and for the purposes set forth."

What the excerpt does not establish. It does not identify an assignee, any ownership transfer, or litigation. It provides no evidence of validity or invalidity, and no substantive analysis of the listed "similar documents" as prior art. The Google Patents record shows legal status "Expired – Lifetime" and an anticipated expiration of 1889-04-23, but this is stated as an assumption, not a legal conclusion. Figures 1–5 are referenced but not reproduced in the supplied text, and no claim-by-claim examination or prosecution history is provided.