US712040A - Switch throw or stand. - Google Patents

Description

No. 712,040. ratentea'oct za, I902. Q 0. E. snow".

SWITCH THROW 0R STAND.

(Application filed Dec. 26, 1901.)

no Model.)

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UNITED STATES PATENT OFFIcE.

CYRUS E. BROWN, OF J OHNSTOWN, PENNSYLVANIA, ASSIGNOR TO THE LORAIN STEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

SWITCH THROW OR STAND.

SPECIFICATION forming part'of Letters Patent No. 712,040, dated October 28, 1902. 1

Application filed December 26, 1901. Serial No; 87,306. (No model.)

To all whom, it may concern.-

Be it known that I, CYRUS E. BROWN, of Johnstown, in the county of Oambria and State of Pennsylvania, have invented a new and useful Improvement in Switch Throws or Stands, of which the following is a full, clear, and eXact description, reference being bad to the accompanying drawings, which form a part of this specification.

My invention has relation to certain new and useful improvements in switch throws or stands, and more especially to a target attachment-therefor, the object being to provide means of simple and efficient character for automatically actuating the target when the switch is thrown and to prevent any improper manipulation thereof,either by accident orintention.

With this object in View the invention consists in the novel construction, arrangement, and combination of parts, all as hereinafter described, and pointed out in the appended claims, reference being had to the accompanying drawings, in which' Figure 1 is a plan view of a switch-throw embodying my invention, Fig. 2 an end view of the same, and Fig. 3 a partial plan View showing the relation of the parts when the switch is being thrown.

The switch throw or stand illustrated in these figures is of the general type described" and claimed in the patent to E. B. Entwisle, No. 666,926, of January 29, 1901, to which reference may be had.

A designates the base-plate; B, the hollow from the surface of the shell or cylinder B are two pins or studs hand h,separated from each other by approximately one hundred and eightydegrees, and so located with respect to the cam Gthat when the shell or cylinder is turned in one direction the pin or stud 72. will engage the projection g of the cam from one side and when turnedin the otherdirection the pin or stud it will engage the projection g from the other side, thereby actuating the cam to turn the target post or spindle and set the target. When the switch is fully thrown in one direction, the pin it is leftin one of the shoulders g, as shown in Fig. 1, and it will be readily seen from an inspection'of this figure that in such position it effectually locks the target against being turned in either direction, except by turning the shell or cylinder B, and thus prevents tampering with the target. When, however, the switch is being thrown, after the pin h has left the cam and before the pin it has reached it, unless additional locking means of some kind are provided the target might be moved freely to a false position. To prevent this, I provide the shell or cylinder B with an exterior flange or rib I, which is arranged to bear against the straight edge g of the cam and hold it from turning. (See Fig. 3.) When the shell or cylinder is turned in either direction, the pin it or it, as the case may be, in riding out of the shoul der g turns the cam a sufficient distance to bring its straight edge 9 parallel with the rib or flange I, and the latter is so proportioned as to length that it engages such edge just as the pin clears the cam and remains in engagement therewith until the other pin is brought into engagement with the cam. In this manner the target is efiectually guarded from false movement at all times.

It will be obvious that my invention is not limited in its application to the particular type of switch throw or stand shown, but that it maybe applied toany throwor stand which has a rotary or oscillating part capable of actuating the cam. It is also obvious that the shape of the cam may be varied and other changes made in the details without affecting my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. The combination with a switch throw or stand having a rotary member which actuates the switch rod or bar, of atarget post or spindle, a cam carried thereby, pins or projections on the said member arranged to engage and actuate the said cam, and means on said rotary member arranged to engage the cam intermediately of the said pins or projections to thereby lock the target post or spindle against movement- 2. The combination with a switch throw or stand, having a rotary member which actuates the switch rod or bar, of a target post or spindle, a cam carried thereby, pins or projections on said member arranged to engage and actuate the said cam, and a locking rib or flange on said member arranged to engage the cam intermediately of the pins or projections.

3. The combination with a switch throw or stand, having a rotary switch-actuating member, having two pins or projections thereon, and also a locking rib or flange intermediate the said pins or projections, of a target'actnating cam having a projection in the path of movement of said pins, and a locking-shoulder at each side of said projection, and also an edge arranged to be engaged bysaid looking rib or flange.

4. The combination with a target post or spindle, and a cam secured thereto, of an actuating member having pins or projections arranged to engage said cam from opposite sides, and also a locking rib or flange arranged to engage said cam intermediate of the pins or projections, said cam also having lockingshonlders for said pins or projections engaged by the latter to move said cam into position to be engaged by said locking rib or flange.

5. In a switch throw or stand, the combination with an actuating member having two target-actuating pins or studs, and an intermediate locking rib or flange, of atarget post or spindle having a cam formed with a projection in the path of movement of said pins or studs, locking-shoulders g at each side of said projection, and a locking edge g adapted to be engaged by the said rib or flange.

In testimony whereof I have affixed my signature in presence of two witnesses.

CYRUS E. BROWN. \Vitnesses:

CORA G. Cox, H. W. SMITH.

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