chair car

a day coach having two adjustable seats on each side of a central aisle.

(not in technical use) parlor car.

Origin of chair car

An Americanism dating back to 1865–70

He kin always get in somehow, ridin' the rods, or comin' blind baggage; religion sorter tags behind and waits for the chair-car.

McClure's Magazine, Vol. 31, No. 1, May 1908 |Various
Indeed, the two friends were about the first to leave the chair-car by the rear door.

Nan Sherwood at Lakeview Hall |Annie Roe Carr
She got a chair-car after that, but, having got into the way of it, drowsed again.

The Wishing-Ring Man |Margaret Widdemer
She did not mind now the curious glances of those passengers from the chair-car who were within the limit of her view.

Nan Sherwood at Lakeview Hall |Annie Roe Carr

She has a chair-car reservation on the Pennsylvania train leaving there at ten o'clock in the morning.

From Place to Place |Irvin S. Cobb