A Model elevator [activity]
Media
Part of Panorama
- Title
- A Model elevator [activity]
- Language
- English
- Year
- 1960
- Rights
-
- Abstract
- An activity on how to build a working model elevator.
- Fulltext
- Children can try A MODEL ELEVATOR Materials needed: A wooden board Metal coffee tins A small cardboard or wooden box Pieces of string Long nails A piece of modelling clay Hammer Procedure: A working model of an elev a t o r can best illustrate changes in the direction of forces. It can easily be made from simple materials. For the rotating drums or sheaves, me tal coffee tins will do. With a hammer and large nail, punch holes in the exact center of the bottoms and lids. Replace the lids and mount the tins on op posite ends of a board, taking care that they both turn easi ly. For the elevator car use a small cardboard or wooden box. Attach pieces of string to both ends of the box and wind them around the sheaves as shown. A piece of modelling clay can be used for a counter-weight and should just balance the weight of the car. Operate the elevator by turning the sheave that has the double turn of cord. A model of this kind is very similar to real elevators, but the sheave of a real eleva tor is turned by an electric mo tor. December i960 91