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2.3. The rests on an inclined platform

The bolster can get fixed slope in the ring holder (Fig.2.16).

Fig.2.16. The ring holder for a bolster

However it would be better to slope the bolster turning it together with the inclined platform. The rest-”whatnot” was invented for lace makers in Germany (Fig.2.17, Fig.2.18). The upper floor is an inclined disk containing four pivots. The bolster is nested between pivots.

Fig.2.17. The rest with inclined platform. Germany

Fig.2.18. The modern rest with inclined platform

The idea of the Italian table rest (Fig.2.19) proves to be near to the rest used in Germany.

Fig.2.19. A rest with an inclined platform. Italy

The italian designer moved farther - he surmised to variate the platform slope and to set discret meanings of the bolster rotation angle on the platform (Fig.2.20a, Fig.2.20b).

Fig.2.20a. The italian rest View 1

Fig.2.20b. The italian rest View 2

Fig.2.21a. The italian rest

Authors of the book suggested another decision of the same task (Fig2.21b). Our rest contains the next function units:

- the upper frame;

- an incline platform that is set on the upper frame;

- three control mechanisms setted on the upper frame; the first one regulates bolster revolving on the platform, the second ones controls the platform inclination and the third mechanism variates the bolster height;

- a rack supporting the upper frame;

- a lower frame with two guiding slots for the rack frames;

- a bearing slab for the foots of lace maker.

Fig.2.21b. Author’s rest with incline platform

The bolster has the minimum height when the angle between rack frames is maximum (Fig.2.21). When the frames are squeezed, the bolster lifted maximally (Fig.2.22).

Fig.2.22. The maximum height of the bolster

All angle adjustments are discrete:

- the bolster rotates through 360 grades in step 18 grades; the bolster position is fixed with the ratchet;

- the platform is inclined 6 to 30 grades in step 3 grades;

- the bolster center of gravity can be set at height 70 to 80 cm in step 2 cm.

The rest keeps steadiness at any position of the rack frames due to constant square of the lower frame (rectangular 46 x 36 cm).

The rest weight is 4.7 kg (without the bolster and the bearing slab).

The rest is to carry the bolster with parameters: 30-40 cm in length, 20-25 cm in
diameter. Every bolster is nested into an according tray (Fig.2.23), that is placed on the incline platform. Changing of the tray takes 20-30 seconds.

Fig.2.23. The bolster tray