A reaper and thresher combined.

I'm going to have it patented and have a big one made from this model.

This will work, as you see." He then explained to her with great precision how as it moved over the field the double operation was performed by the same motive power.

That it would be a saving of a certain amount of labor and time which she could not remember.

She did not understand a word of his explanations; she saw only a clean and pretty but complicated toy that under the manipulation of his grimy fingers rattled a number of frail-like staves and worked a number of wheels and drums, yet there was no indication of her ignorance in her sparkling eyes and smiling, breathless attitude.
Perhaps she was interested in his own absorption; the revelation of his preoccupation with this model struck her as if he had made her a confidante of some boyish passion for one of her own sex, and she regarded him with the same sympathizing superiority.
"You will make a fortune out of it," she said pleasantly.
Well, he might make enough to be able to go on with some other inventions he had in his mind.