US1116108A - Automatic switch-throwing apparatus. - Google Patents

Description

J. H. PARKHURST.

AUTOMATIC SWITCH THROWING APPARATUS.

APPLIOATION FILED MAY 9, 1914.

1,1 16,108. Patented Nov.3, 1914.

WWIIFIHWF- atio'zwca JOSEPH H. PARKHURST, 0F TALOGA, OKLAHOMA.

AUTOMATIC SWITCI-I-THROWING APPARATUS.

Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed May 9, 1914. Serial No. 837,552.

To all whom it may concern.-

Be it known that I, Josnrn H. PAnKnURs'r, a citizen of the United States, residing at Taloga, in the county of Dewey and State of Oklahoma, have invented certain new and useful Improvements in Automatic Switchflhrowing Apparatus; 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, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in devices forautomatically throwing switches, comprising means carried by an engine and adapted to be lowered to trip against a projection upon a crank shaft, forming means whereby the shaft may be rocked and the switch thrown before the engine reaches the latter.

The invention comprises various details of construction, combinations and arrange ments of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claims.

I illustrate my invention in the accompanying drawings, in which:

Figure 1 is a side elevation of the device. Fig. 2 is a top plan view. Fig. 3 is an enlarged detail view of means for tripping or throwing the switch.

leference now being had to the details of the drawin s by letter, A, A designate the rails of a railway, and B is a rock shaft journaled in the aperture in the bearings E in the main rail or, if preferred, independent rails may be provided for hearing Incinhers. Sa'id shaft has an arm C fixed there to which is adapted, as the shaft is rocked, to be thrown slightly above the upper surface of the rails and in the path of the means carried by the engine whereby the shaft may be rocked as the engine passes over the same. Said. shaft has a crank B to which a rod F is fastened, the rod being provided with an eye F at one end for engagement with one arm of the angled lever O, pivotally mounted upon the pivot J. The

other end of the angled lever is connected to a rod K which in turn is fastened pivotally to a switch. Said angle lever is mounted in a slot L formed in the upper surface of the tie and has a pivotal swinging movement therein, limited by the opposite edges of the slot.

Upon the engine is pivotally mounted a lever M, one end of which is adapted to be thrown down into contact with the projection upon said rock shaft, and P is a plate which is pivoted to a projection M. of the lever M, and a coiled spring S bears against a projection upon the lever M and is attached to the under face of the plate 1, forming yielding means whereby the plate, after being depressed, may be returned to its normal position.

In operation, when it is desired to throw the switch, the engineer by throwing down the lever M may cause the end thereof to contact with the projection upon the rock shaft, causing the latter to rock and the switch to be thrown before the engine reaches the latter. It will be understood that said projection upon the rock shaft may be adjusted to operate from a train coming in the opposite direction, if desired, by simply reversing the projection.

Millet I claim to be new is:

An automatic apparatus for throwing switches comprising, in combination with the ties and rails of a railway, one of said ties having a recess in the upper surface thereof, a crank shaft and. suitable mounting therefor, a projection upon the rock shaft, a rod pivoted to a crank of said shaft, an angle lever positioned in said recess and having an eye formed at the angled portion thereof, a stationary pin secured to the re cessed tie and passing through said eye and upon which the lever is pivoted, an eye at the end of said rod engaging one arm of said lever, and connections between the other arm and switch throwing rod.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

JOSEPH II. PARKIIURST.

Witnesses JOHN E. Hooron, Manvm M. Wnrrrnnnnne.

copies of this patent mas be obtained for five cents each, by addressing the Commissioner of Bat-exits,

Washington, D. 0.

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