US525454A - Switch-stand - Google Patents

Description

(No Model.) v Y I B. P. DRIEVBR 8u J. W. MIXON. SWITCH STAND.

.l UNITED STATES'x PATENT OFFICE.

BENJIMAN F. DRIEVER ANDJ AMES lV. MIXON, OE PALMER, TEXAS.

SWITCH-STAN D.

SPECIFICATION forming part of Letters Patent No. 525,454, dated September 4, 1 894.

Application filed March 10, 1894..

.To @ZZ whom it may concern.-

Be it known that we, BENJIMAN F. DnInvER and JAMES W. MIXON, citizens of the United States, residing at Palmer, in the county of Ellis and State of Texas, have invented a new and useful Switch-Stand, of which the following is a specification.

Our invention consists of certain hereinafter specified improvements in those switch stands wherein the crank bar is movable vertically and provided with a cam lever for operating it, and our object is to produce a device in which the crank bar may more eectually be locked in a permanent position, and operated with greater ease and speed.

In the accompanying drawingszEigure l represents a perspective view of a switch stand constructed after our invention; Fig. 2 a vertical section thereof; Fig. 3 an enlarged perspective of the cam lever for operating the crank bar; Fig. 4 a similar view of the plate for locking the crank bar while the lever is released. Fig. 5 is a side elevation showing the position of the lever in dotted lines.

The reference letter a indicates the base of the stand which is preferably formed of a metallic plate having the three standards a arising therefrom and joining each other at their upper ends, where the block h is formed. This block is provided with a vertical passage b therein, in which the crank bar o of the switch stand is revolubly mounted. The lower end of the crank bar o is revolubly mounted in the horizontal plate c', which is secured to the lower portion of the standards a by means of the st'ud c2, which proj ect into the openings c3 of the same.

Formed integral with the lower end of the bar c is a crank d, which is provided with the downwardly extending wrist pin cl and the upwardly extending stud cl2. The pin d is pivotally connected to the switch bar e, which is in turn connected to the switch as usual, while the stud d2 is adapted, when the bar c is moved vertically, to enter one of the openings e of the plate o', as will more fully appear hereinafter. Arranged on the bar c and held in place by the block b, and pin f is the spiral spring f, which operates to give the bar c a normal tendency downward.

g indicates the cam lever, which is formed Serial No. 503.150. (No model.)

with a main portion g and a bifurcated and cammed end g2. The lever g is fulcrumed to the crank bar by means of the pin h, which projects into the bar and is located at the upper end of the earn portion so that the stud (l2 will normally lie within the opening above it in the plate c'. The cam g2 is formed with two degrees or facest' and t', and face t' is that which is adapted to normally engage and rest upon the block b, so that the stud d2 will be placed in the position just described. Face t" is the nearest to the fulcrum, and when the lever is swung to engage this face and block h, the bar c will be dropped, so that stud d2 will disengage the opening above it and the wrist pin d engage the openings a2 in the base plate. A point on the cam g2 just intermediate the faces 1l and i', will place the bar c in a position where it will be free to revolve so as to throw the switch. It will be remembered that when the lever g is moved to disengage face t and engage the other, it will be raised up horizontally, or nearly so, thus disengaging its body from the block b. This is shown in Fig. 5.

The connection between the lever and the block consists of the studs c, projecting out from the four sides of the block b and having their ends formed with the downwardly depending lugs la thereon. These studs are adapted to enter the opening Z2, and the lugs 7c to engage the bolt Zof the lock Z, whereby the lever is secured to the block. The lock l may be of any preferred kind, and is arranged in the lever g, with its keyhole opening outwardly, thus permittingit to be readily reached. Since the studs k are four in number, it will be readily understood that the lever g may be locked to any one of them and consequently in any desired position. It is essential that the openings a2 and e and the studs 7o be arranged in vertical alignment, for the crank d and lever g are similarly arranged, and therefore the necessity. The bar c projects some distance above the block b, and may be provided with the signal or target n, if so desired.

To use our appliance, the bar e is properly connected to the switch and to the crank ci. Now, supposing that the switch is closed when the parts assume their normal position, to open the switch the lockZ is released and lever g raised so that cam face z' will disengage the block b and that portion of the cam vwhich iles intermediate of two faces t' and i', engage 1n its stead. This will be followed by a consequent disengagement of the stud d2 and wrist pin d and their respective openings, thereby leaving the bar c free to revolve in its bearings and by doing this the switch is opened. By multiplying the number of studs k and openings in the plates the rod c may be changed to various positions and more complicated adjustments of the switcheffected. This, however, is knowledge common to those acquainted in the art, and needs no further description. After the switch has been adjusted and it is desired to allow it to remain so temporarily, as is very often the case, the lever g may be swung up so that face 1l will engage the block b. This will be followed by an engagement of the wrist pin dand the opening a2 directly below it, thus locking the bar c incapable of movement. Here it may remain until it is desired to close or further adjust the switch, whereupon it is operated as before described. It will not be necessary for us to describe the adjustments between the switch and the bar c, since these may be done lby any mechanic and may be varied in many ways, and above all, do not enter into this invention.

Having described our invention, what we claim, and desire to secure by Letters Patent, 1s-

1. A switch stand comprising the combination of a frame, a vertically movablefand revoluble bar, mounted therein and having a connection with the switch whereby it is adjusted, two recessed plates arranged adjacent tothe bar and adapted to be alternately engaged by the same, whereby the bar may be locked incapable of rotary movement in either of two positions in a vertical line, and a cam lever for moving the bar vertically and rev0- lubly, substantially as described.

2. A switch stand comprising the combination of a frame, a vertically movable and revoluble bar mounted therein, a crank on the bar whereby it is connected to the switch, two plates arranged one above each other and adjacent to the bar, and having openings therein, a stud on the bar and adapted to alternately engage each of the plates when moved vertically, whereby the bar may be locked incapable of rotary movement in two positions in a vertical line and a cam 'lever for moving the bar vertically and revolubly, substantially as described.

In ,testimony that we claim the foregoingas our own we have hereto affixed our signatures in the presence of two witnesses.

BENJIMAN F. DRIEVER. JAMES W. MIXON.

Witnesses:

L. LEVY, T. L. MGCARTY.

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