US469460A

US469460A - Trolley for overhead railways

Info

Publication number: US469460A
Authority: US
Publication date: 1892-02-23
Anticipated expiration: 1909-02-23

Description

(No Model.) I 2 Sheets-Sheet 1.

N. E. AUSTIN. TROLLEY FOR OVERHEAD RAILWAYS.

No. 469,460 Patented Feb. 23, 1892.

INVENTOH ATTORNEY (No Model.) 2 Sheets-Sheet 2.

N. E. AUSTIN. TROL'LEY FOR OVERHEAD RAILWAYS.

No. 469,460. Patented-Feb. 23, 1892.

ATTORNEY UNITED STATES PATENT OFFICE.

NELSON E. AUSTIN, OF DANBURY, CONNECTICUT.

TROLLEY FOR OVERHEAD RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 469,460, dated February 23, 1892. Application filed April 30 1891. Serial No. 391124. (No model.)

To all whom it may concern:

Be it known that I, NELSON E. AUSTIN, a citizen of the United States, residing at Danbury, in the county of Fairlield and State of Connecticut, have invented certain new and useful Improvements in Trolleys for Overhead Railways; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in the construction of trolleys for overhead carrying systems, and has for its object to provide a device of this description in which the friction of the rollers shall be reduced to a minimum, and, furthermore, to greatly facilitate the initial starting of the trolley when a load is suspended therefrom.

In the accompanying drawings,Figure 1 is a side elevation of my improvement; Fig. a longitudinal sectional elevation; Fig.8, a section at the line a: at of Fig. 1; and Fig. 4C a view similar to Fig. 1, but showing the position which the rollers. assume during the travel of the trolley-truck.

Similar numerals denote like parts in the several figures.

1 is the trolley-truck, and 2 the suspensionhook depending therefrom. Interior of the truck and extending longitudinally thereof are bearing-surfaces 3, which are adapted to serve as bearings for the peripheries of the rollers 4 within the truck. These rollers rest on the track 5 and have axles 6, around the ends of which are loose sleeves 7. The truck is double and has two rollers. The sleeves extend through elongated openings 8 at the sides of the truck, the .upper walls of said openings being declined at each end, as shown at 9. The bearing-surfaces 3 are straight, but at the ends thereof the truck is cut away to form recesses 10. \Vhen the weight of the truck is transmitted to the rollers, and thereby to the bridge, through the bearings 3 3, as shown at Figs. 1 and 2, the sleeves 7 have no contact with either the upper or lower walls of the opening 8; but as the rollers leave said bearing-surfaces the sleeves will come in con tactwith the declines 9, and the weight of the truck will rest wholly on the'sleeves, as shown at Fig. 4.

The several parts of my improvement assume the position shown at Fig. 4: immediately after the trolley is put in position, so that it will be readily understood that when the travel of the trolley is arrested the position of parts will likewise be as is shown in Fig. 4E.

Ordinarily it is difficult to start a loaded trolley; but my invention makes it possible to do this with the exercise of but little power, since the sleeves will readily roll down the declines, and when the parts are in the position shown at Figs. 1 and 2 there is a leverage equal to the diameter of the rollers, which operates in favor of the motive power.

i The sleeves constitute anti-friction bearings at the ends of the openings 8; but it will be obvious thatsaid sleeves are not essential to my improvement.

I claim- 1. In a trolley for overhead railways, the combination of the truck having straight bearing-surfaces and cut-away portions to form recesses in said truck at the ends of the bearing-surfaces, the truck being also provided with laterally-elongated openingswhose upper walls are declined at the ends, and the rollers within said truck having axles extending within said openings and adapted to engage with the declined walls and thereby support the truck, substantially as set forth.

2. In a trolley for overhead railways, the combination of the truck having straight bearing-surfaces and cut away so as to form recesses adjacent to the ends of the bearingsurfaces, said truck also provided with laterally-elongated openings whose upper walls are declined at the ends, the rollers within said truck having axles extending through said openings, and the sleeves loose around the axles and adapted to engage the declined ends of the walls and thereby support the weight of the truck, substantially as set forth.

In testimony whereof Iaffix my signature in presence of two witnesses;

NELSON E. AUSTIN.

\Vitnesses:

JABnz A'MsBURY, CHARLES R. I-IELIN.