IAN  T  COBB

CUT WHEELS & PINIONS FOR

EGG TIMER/TIMEPIECE

by JOHN WILDING

Wheels to be crossed out / Pinions supplied on stubs to be cut off and fitted to arbor

 1/2/3 or 4 pinions on one stub   PHOTO

 ALL PRICES PLUS POSTAGE & PACKING   

 

This project was designed as a beginner's introduction to metalwork and the use of a small lathe. It is a simple weight driven mechanism designed to run for some 6 minutes for the purpose of timing a boiled egg. At the completion of the time period a single stroke is sounded on the bell. The entire construction can be carried out with one of the small hobby lathes available today. In fact the lathe chosen here was the Unimat 4. In order not to involve the beginner with wheel cutting the two gears required are available from RiteTime. The escapement chosen for this timer is the MacDowall single pin escapement which must be the easiest to make escapement ever designed. As a result of exposure at several model engineering exhibitions it became clear that many constructors would like the timer to run continuously, in other words to be converted into a clock. This has now been done and the description is contained in this book. It was also requested that the original two gears and the two extra gears required in the conversion be described as well. Many constructors wanting to make 'every part'. There is absolutely no dificulty in cutting these gears in the Unimat 4 lathe. A full description is given of the process including the various ways of dividing in order to obtain the wheel counts. Full details of the addresses of all the material suppliers is given at the end of the book. The book contains 60 pages and over 200 illustrations.        J Wilding

Cutters Module

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ORDER FORM
BOOK 30.  00
PLASTIC GEARS 21.  00  Back To J Wilding Clocks
NUMERALS 3.  00
4.3/8" DIAL(FOR CLOCK CONVERSION 64.  00 Back To Clock Construction Books
OTHER PRICES TO BE ANNOUNCED  
     
   
   

 Photo by kind permission                                                                     of Mr J Wilding

 

   
   
Please verify prices before ordering as prices can fluctuate due to market forces