“And is that what you did this time?” asked Tom.

“Yes, Master.  Me fix hammer,” Koku answered.  “I get dirty, I no care.  Man say I no can fix.  I show him I can!”

“What man said that?”

“Man who run hammer.  Ha!  I lift him by one finger!  He say he no like to work on hammer.  He want to work on airship.  I tell him I tell you, maybe you give him job—­he baby!  Koku can work hammer.  Me fix it when it get stuck.”

“Well, maybe you know what you’re talking about, but I don’t,” said Tom, with a pleasant smile at his big helper.  “Come on, Koku, we’ll go see what it all means.”

“Koku work hammer, maybe?” asked the giant hope fully.

“Well, I’ll see,” half promised Tom.  “If it’s going to get out of gear all the while it might pay me to keep you at it so you could get it back in place whenever it kicked up a fuss, and so save time.  I’ll see about it.”

Koku led the way to the shop where the triphammer was installed.  It was working perfectly now, as Tom could tell by the thundering blows it struck.  The man operating it looked up as Tom approached, and, at a gesture from the young inventor, shut off the power.

“Been having trouble here?” asked Tom, noting that the workman was one of the new hands he had hired.

“Yes, sir, a little,” was the respectful answer.  “This hammer goes on a strike every now and then, and gets jammed.  Your giant there forced it back into place, which is more than I could do with a big bar for a lever.  He sure has some muscle.”

“Yes,” agreed Tom, “he’s pretty strong.  But what’s this you said about wanting to give up this job, and go on the airship construction.”

The man turned red under his coat of grime.

“I didn’t intend him to repeat that to you, Mr. Swift,” he said.  “I was a little put out at the way this hammer worked.  I lose so much time at it that I said I’d like to be transferred to the airship department.  I’ve worked in one before But I’m not making a kick,” he added quickly.  “Work is too scarce for that.”

“I understand,” said Tom.  “I have been thinking of making a change.  Koku seems to like this hammer, and knows how to get it in order once it gets off the guides.  You say you have had experience in airship construction?”

“Yes, sir.  I’ve worked on the engines, and on the planes.”

“Know anything about dirigible balloons?”

“Yes, I’ve worked on them, too, but the engineering part is my specialty.  I’m a little out of my element on a trip-hammer.”

“I see.  Well, perhaps I’ll give you a trial.  Meanwhile you might break Koku in on operating this machine.  If I transfer you I’ll put him on this hammer.”

“Thank you, Mr. Swift!  I’ll show him all I know about it.  Oh, there goes the hammer again!” he exclaimed, for, as he started it up, as Tom turned away, the big piece of steel once more jammed on the channel-plates.