[Fig. 426], is from an oval template, which is caused to make two revolutions to one of the lathe mandrel producing 4 waves and undulations and with the slide-rest movement. It will be perceived in this case the form of the oval is superseded by another pattern, and shows how great a change in the form of patterns from templates my rose engine with change wheels effects.
Fig. 426.
[Fig. 427], is also from an oval template, caused to make 5 revolutions to one of the lathe, and with the circular movement of the chuck and the slide-rest movement, and in this case the form of the oval is also superseded. Indeed, none but those who have made the matter their study would have the slightest idea that this pattern could be produced from an oval template.
Fig. 427.
[Fig. 428], is also from an oval template, it is finer than 427, but is done in the same way by the template making nine revolutions to one of the lathe mandrel.
Fig. 428.