Page View
Northrop, E. B.; Chittenden, H. A., Jr. (ed.) / The Wisconsin lumberman, devoted to the lumbering interests of the northwest
(August, 1874)
Consolidation of the truckee: California lumber companies, p. 515
PDF (349.9 KB)
Page 515
The Wisconsin Lumberman. to the deviation from the circular form. In a cylinder, made with flat ends, the strength imparted by these ren- ders it less liable to stretch at the the extremities than at mid-length. Such a cylinder has thus a tendency, under internal pressure, to assume the form of a barrel. Assuming the material to be suffi- ciently pliable, like india-rubber, and able to bear sufficient stretching, the sides would be further curved, and the spherical form be eventually at- tained by sufficiently increasing the pressure. In very short cylinders, the ends play an important part in increasing the resistance to bursting longitudi- nally; and where the length does not exceed the diameter, the strength approaches that of a sphere. In practice, however local weakness aris- ing from various causes-such as cor- rosion of plates and rivet heads, flaws, &c.,-may lead to failure, against which the aid from the ends cannot be counted upon. Again, in oval shaped boilers, the end plates assist materially in main- taining the shape against the ten- dency to become circular under in- ternal pressure. Since the aid lent by the ends diminishes as the distance from these increases, an oval boiler is most liable to change of form at mid length. In consequence of their tendency to alteration of shape under pres- sure, it is almost impossible to give any rules for the strength of ellipti- cal boilers, as their resistance varies with every change of shape, accord- ing to very complicated laws.-Bos- ton Lumber Trade Now is the time to advertise in the WIscoNmn LumBEwBx. The best publication of its kind in the north- west, and most widely circulated. Terms moderate. Subscription price only $2.00 per year. CONSOLIDATION OF THE TRUCKEE (CALIFORNIA) LUMBER COMPANIES. The Truckee Republican of July 18th says: "The Sierra Nevada Lumber Association has recently filed articles of incorporation in the office of the Secretary of State, at Sacramento. Al of the owners of lumber mills on the Truckee river and its branches (except one) are re- presented in this association. We understand it is not the design of this combination of the lumber inter- ests of this section to raise the price of lumber. One of the principal ob- jects is to have a uniform price. Heretofore each mill has had to send out its separate agent to Salt Lake and other remote places, at heavy ex- pense, to make lumber contracts. In this one item each, mill would spend perhaps $1,000 or $1,500 per annum for traveling expenses,amount-- ing in the aggregate to from $10,000 to $15,000. A considerable portion of this extra expense can be saved by the consolidation which has been ef- fected, without increasing the price of lumber. It will benefit contract- ors and lumber dealers from abroad. They will not be compelled to travel around to each and every mill to see where the dry lumber is that they want. Now they will only. have to apply to the officers of the association to obtain at once the information they desire. A detailed statement will be kept by the association of the amount and kind of lumber on hand at each mill and the length of time it has been sawed. There is no doubt but that if the association per- fects its organization and carries out its plans as they have been foreshad- owed, the results that follow will be beneficial not only to the mill owners, but to this entire community. 515
Based on date of publication, this material is presumed to be in the public domain.| For information on re-use, see http://digital.library.wisc.edu/1711.dl/Copyright