Page:Popular Science Monthly Volume 92.djvu/567

 Popular Science Monthly

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plate / joint Drive -shaft

��5. The labor-saving device submitted must be clearly shown in one or more views. The drawings need not be made by a skilled draftsman. It is sufficient that they should be intelligible. While pencil sketches will be considered, con- testants are requested to make their drawings in ink on bristol board. The views should be sufficient in number to set forth the construction and general arrangement of the parts clearly. The contestant's name and address should ap- pear on each sheet of drawings.

6. Thedraw^- ings must be accompanied by a descrip- tion, preferably typewritten, in which the con- struction and operation of the device is clearly given. It must be written on one side of the paper only, and it should not be more than five hundred words in length. The name and ad- dress of the con- testant should appear in the upper left-hand corner of the

first sheet of the written description.

7. The drawings and description en- tered by contestants must be received by the Popular Science Monthly not later than 5 P. M. on April 10th.

8. The judges of the contest will be the editors of the Popular Science Monthly.

9. The following de\dces and processes are barred from the contest:

All compounds to be mixed with the fuel in an attempt to obtain more power.

All auxiliary air devices and similar equipment designed to save fuel by mak- ing the mixture leaner.

All parts of the engine, clutch, gear set, transmission mechanism, rear axle, steer- ing wheel and any other part of the chassis, unless a reduction in the amount of muscular energy at present expended

��Tooth control ling Chanqe -speed "^ovenr^eritot qear change -speed

gear

��This illustration also shows a clearly detailed drawing of a device that enables a driver to change speeds without expending energy to throw the clutch in and out. It consists of three gears arranged on the surface of a cone and parallel to the base. Spiral gears connect the three main gears and allow one gear, driven from the main shaft to be slid from the smaller of the gears on the frame to another and back again without throwing out the clutch as is usually necessary

��to drive the average automobile is ob- tained.

10. A first prize of $100 will be awarded to the contestant who, in the opinion of the judges, has produced the simplest, and most desirable labor-saving device.

A second prize of $50 will be paid to the contestant who submits the device next in order of merit.

11. The wiimers of the contest will be announced in the June issue of the Popu- lar Science Monthly. A description of the device which won the first prize will

appear in the same number, together with the name of the winner. In the July issue of the Popular Sci- ence Monthly a description of the device which wins the second prize will be published to- gether with the name of the wunner.

12. The ed- itors of the Pop- ular Science Monthly shall have the right to publish meri- torious devices which do not win a prize. The regular space rates will be paid to the contestants who submitted the drawings and descriptions of devices thus selected.

13. Each contestant retains full property rights in the invention that he submits. The only restriction is that imposed by Rule 12.

14. When a contestant submits more than one device the description and draw- ing of each device must be sent as a separate unit.

15. No manuscripts or drawings will be returned to contestant unless return post- age is enclosed on submission.

16. Address your drawings and specifi- cations to the Motor Contest Editor, Popular Science Monthly, 225 West 39th Street, New York.

Please follow the above rules carefully.

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