This paper studies stock and mutual life insurance company formations in the first half of the 20th century. A common belief is that the growth of state consumer protection regulation rendered the mutual form irrelevant, but the paper finds little evidence connecting such regulation with declines in the form’s popularity. The exception is the initial capital requirement. Mutuals were formed alm...

Regarding the importance of ring spinning method among spinning systems, great potentials exist for research about on the improvement of the quality and properties of ring spun yarn. This study aims to improve yarn quality by changing the shape and dimensions of spinning triangle through forming a groove in the middle zone of the front darfting &#10roller with a curvature of 5 to 7 mm. For the ...

Metal spinning as a kind of manufacturing process has capability to shape hollow components. In present work shear spinning process is used to formplates into conical shapes. Moreover, the aim of this research is to demonstrate the impact of the process parameters (i.e. feeding rate and spindle speed) on wall thickness. This approachwas done by experimental and finite elements method. The resul...