US293853A

US293853A - Portable railway

Info

Publication number: US293853A
Authority: US
Publication date: 1884-02-19
Anticipated expiration: 1901-02-19

Description

JDOLBEER. PORTABLE RAILWAY.

v 'Patentd Peb. .19, 1884.

2 used in rough, mountainous, and wooded land,

, UNiTED STATES T PATE T OFFIC JOHN DOLBEER, OF SAN FRANCISCO, CALIFORNIA.

PORTABLE RAILWAY.

SPECIFICATION forming part of Letters Patent No. 293,853, dated February 19,

. Application filed September 25, 1883. (No model.)

To all whom it may concern Be it known thatl, J OHN DOLBEER, of the c1ty and county of San Francisco, and State of California, have invented an Improvement in Portable Railways; and I hereby declare the following to be a ful1,'c1ear, and exact description thereof.

My invention relates to an improved construction for railways; and it consists of stringers with transverse timbers framed into them to hold them together, and having rails bolted to them to form complete sections in straight lines and curves, and their ends so formed that any of the sections may be abutted and secured together to form a continuous line of railway, with regular or reverse curves at any desired points, as will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a View of a number of sections united to form a line of road. Fig. 2 is a plan of one section. Fig. 3 is a side elevation of the same. Fig. 4. is an end view. Fig. 5 is a view in detail. My railway is especially designed to be where it is desirable to get out logs for milling purposes. 7 In such localities it is customary to build roads over which the logs may be hauled upon wagons or trucks; or what are known as skid-roads are built by laying logs-transversely at intervals of four to eight feet, so that the log to be hauled may be drawn across these fixed skids. Both of theseroads are comparatively expensive for the short time they are needed, and new ones must be built as soon as the timber in any locality is exhausted. In my invention I form a portable railway in solid sections, with all necessary curves, suitable to be laid upon the ground,

with only the work of partial leveling, and

without any gravel or complete filling or grading, so that logging. engines and cars may be run over it into any locality, and when the timber is exhausted the sections may be taken up by a derrick upon a car and transported to another point and relaid complete.

A A are the stringers, which are made of heavy timber, and of .a length equal to that of the rails to be used. When the rails are to be reach quite to the opposite ends.

.struction, when the sections are laid, the ends of stringers are notched, so'that the end of each one will overlap the next adjacent one, and the rails are bolted or spiked upon them, so that the ends of the rails extend beyond the ends of the stringers at one end and do not By this conthe timbers interlock or overlap, and the rails from each section extend a short distance upon the next following section, where they may be secured by fish-plates, so that the whole will be united and form a continuous bearing for the train of cars. The overlapping ends are sufficiently strong to prevent the unequal sinking of the meeting ends, and the track is thus kept sufliciently steady to support the engine and cars. \Vhen the sections are straight, the ends will exactly abut; but when they are ourved,'the endsof the outer and inner stringers must be out upon a line forming a radius of the curve. By this construction any of the curvesmay be united with the straight sec tions; or they may be united with each other to form any desired arc of curvature or to form reversed curves. \Vhen they are to be laid, they are placed upon a car having a derrick at one end or corner, and a rope being secured to the central cross-timber, the section is lifted from the truck'and is deposited upon the ground in the desired position. The car being run forward upon it, the next'section is placed, and so on until the road is laid. When it is to be removed, the sections are picked up one after another and loaded upon the cars in the same manner and taken to a new position. Having thusdescribed my invention, what I' claim as new, and desire to secure by Letters Patent, is- 1. A portable railway consisting of stringers permanently united by cross-timbers, and having rails secured upon them, so as to project beyond one end and not reach the oppothem, and permanently united, as shown, the inner and outer stringers of curved sections, 1 terminating on lines which are radii of the curves, substantially as herein described.

In witness whereof I have hereunto set my hand.

JOHN DOLBEER.

\Vitnesses: H. NoUnsn,

H. G. LEE.