Every large model making establishment has separate rooms fitted up where each inventor can work on his own machine and this gives you the privacy you demand and besides whenever you want a part made or changed you have a skilled mechanic at your beck and call and a shop equipped with the finest machine tools for him to use.

Nor need you be afraid that your invention will be appropriated, which is a high-toned name for theft, by either the model maker or his employers to whom you have entrusted your drawings, and for the following reasons:

(1) Because any hint of such a thing as theft would ruin his business for all time; (2) because 99 per cent. of all inventions fail to make money for any one of 99 reasons and (3) because the model maker grows rich making models for inventors while the latter mostly go broke; and as far as the employees are concerned we must grant that they are as honest, or even more so, than the average run of suffering humanity.

Neither are inventions apt to be stolen by patent attorneys for the reasons cited above but after you have worked out your invention, built a model and obtained a patent you are then in great danger of being separated from the fruits of your genius and perseverance by the professional promoter who makes it his business to finance the invention and at the same time to feather his own nest; but more about him a little later.

Fig. 68. SOME USEFUL JEWELERS’ AND MACHINISTS’ TOOLS

[Large illustration]

A good way to safeguard yourself at the hands of model makers, if you have any doubts about them, is to give different model makers different parts to make and then assemble them yourself. While it takes considerably longer to build up a model in this secret way still there is a lot of satisfaction in this method of procedure.

Fig. 69. A SMALL HAND DRILL PRESS