ry often it jammed, or "stuck," as
Koku described it, and if the hammer could not be forced back on the
channel or upright guide-plates, it meant that it must be taken apart,
and valuable time lost. Once Koku had been near when the hammer got out
of order, and while the workmen were preparing to dismantle it, the
giant seized the big block of steel, and with a heave of his mighty
shoulders forced it back on the guides.

"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