| Titre : |
Drum geometry and design |
| Type de document : |
texte imprimé |
| Auteurs : |
E. Longstaff, Auteur |
| Année de publication : |
1974 |
| Article en page(s) : |
p. 41-47 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Mélange
Tambours (tannage)
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Tanning drums fitted with horizontal shelves and or stub pegs are now known to be poor mixers. Scaled experiments with Perspex model drums show that the mixing efficiency can be improved by replacing the traditional fittings with extra long flat-faced pegs (EL-pegs) angled preferably at 45° to the forward movement of the drum. For optimum effect the length of the EL-pegs requires to be at least 0.33 of the drum diameter. Data obtained from the experi¬ments has been used to modify at low colt, large wooden drums in regular tannery use. |
| Note de contenu : |
- INTRODUCTION : Angled shelves versus pegs
- DESCRIPTION OF OTTO SPECHT DRUM
- EXPERIMENTS WITH ANGLED PEGS OF NORMAL LENGTH : The effect on small leather loads - The effect on large leather loads
- EXPERIMENTS WITH LONG ANGLED PEGS OR SWEEPS : The effect on loads with low or medium floats - The effect on long floats
- EXPERIMENTS WITH EXTRA-LONG ANGLED PEGS : The effect of six extra-long pegs - The effect of four extra-long pegs and two standard pegs
- PRINCIPLE OF ANGLED EXTRA-LONG PEGS : Optimum peg lengths - Optimum number of pegs - Optimum number of rows of pegs
- SECOND SERIES OF EXPERIMENTS WITH WIDE PERSPEX LABORATORY DRUM : Description of wide Perspex laboratory drum
- EXPERIMENTS WITH WIDE PERSPEX DRUM : The effect on leather movement - The effect on the float
- APPLICATION TO TANNERY DRUMS
- Table 1 : The effect of peg shape on transverse movement of skins in a tanning drum |
| En ligne : |
https://drive.google.com/file/d/1XgHWkFrh76XtjTYnNNv59biGk5zjy62f/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35482 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 58 (Année 1974) . - p. 41-47
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