US913926A - Switch-stand. - Google Patents

Description

E. N. STROM.

SWITCH STAND.

APPLICATION FILED APR. 27, ma.

9 1 3,926 Patented Mar. 2, 1909.

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E. N. STROM. I SWITCH STAND. APPLICATION FILED APB. 27, 1908.

Patented Mar. 2, 1909.

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EUGENE N. STROM, OF CHICAGO, ILLINOIS, ASSIGNOR TO PETTIBONE, MULLIKEN & COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SWIT CH-STAND Specification of Letters Patent.

Patented March 2, 1909.

Application filed. April 27, 1908. Serial No. 129,403.

T 0 all whom it may concern:

Be it known that I, EUGENE N. S'rnon, a citizen of the United States, residing at Chicago, in the county of Cook and State 01 Illinois, have invented a new and useful Imrovement in Switch-Stands, of which the following is a specification.

My invention relates to an improved con struction of mechanism for throwing a railway-switch from a switch-stand.

Referring to the accompanying drawings, Figure 1 is a broken view in front elevation of a switch-stand provided with my improvement; Fig. 2, a view of the same in side elevation; Fig. 3, a plan section showing the table of the stand, taken on line 3, Fig. 1 Fig. 1, a plan section taken on line l, Fig. 1 Fig. 5,a section on line 5, Fig. 6; Figs. 6 and 7 are sections on line 6, Fig. 1, respectively showing the mechanism at opposite throws of the switch, and Figs. 8, i), and 10 are per s ective views of members of the mechanism, s owing them in unassembled relation.

The frame 11 of the switch-stand may involve any desired general construction, that shown being preferred because of its simplicity, lightness and strength, in consisting merely of two legs rising from a base 12, adjacent to which they are outwardly bor. ed and expanded, as illustrated, where they are connected by a yoke 13 cast integral with them and forming a centralizing-bcaring 15 for the urpose hereinafter explained; this bearing, eing directly above a similar hearing 16 formed on the base. The legs are surmounted by a table 17 rigidly bolted in place and provided with peripheral notches 18 and 19 ninety degrees apart and respectively adjacent to stops 20 and 21 for the rotatable head 22 carrying the operating lever 23 and pinned at its boss 24 to the target-rod or spindle 25, which finds its bearings in the table and the base 12.

The parts thus far described need present no features of novelty.

On one side of the yoke 13 is provided the inwardl projecting elevated stop 26, and a similar ower stop 27 projects inwardly from the opposite side of the yoke. A vertical fulcrum-pin 28 is rigidly supported in the bearings 15 and 16. On the upper part of this pin is fulcrumed at its sleeve the crank or lever 29, most clearly shown in Fig. 8; and the crank or lever 30 of general bell-crank shape, which is most clearly shown in Fig. 10, is fulcrumed at its sleeve on the lower part of said pin, whereby these two lovers are rotatably con'lined between said bearings. One arm of the lever 29 terminates in an eye 29 for pivotal connection therewith of a rod 31 (Fig. 4), leading to a remote semaphore (not shown) for operating the latter, and the op posite end of this lever is bifurcated to form a socket 29 with an extension 29 of a prong oi the fork provided with a depending locking-stop 29. One arm of the lever 30 terminates in an eye 30 for pivotal connection with the connecting-rod 32 (Fig. 1), of a split-switch (not shown), the other arm being bifurcated to form a socket 30 having an extension 30 on one side provided with an upwardly extending locking-stop 30. On the target-rod 25 near its lower end is socured to rotate with it a cranlehead 33 (best shown in Fig. 9) of general segmental shape, and comprising upper and lower arms 3 1 and 35 diverging from a boss 36 pinned to the targetnod, with an arc-shaped rim 36 connecting them at their outer ends and on the opposite ends of which are journaled, re spectively, the upwardly projecting antifriction roller 37, to engage with the socket 29", and the downwardly projecting antil'riction roller 38 to engage with. the socket 30".

The object of the particular arrangement shown and described Ol' my improved mechanism is so to control a distant semaphore with relation to a railway-switch as to insure turning of the semaphore to its danger-display position before throwing the switch for the siding, and to insure, on the other hand, throwing of the switch for the main track before the semaphore is turned from that position. In Figs. 4 and 6 the mechanism is shown in the proper position for the 'lirstnamed operation, with the lever 23 in the table-notch 18 for locking the mechanism in that position, from which it is changed by raising the lever out of the notch and turning it to register with and enter the notch 19 with the following-described result: Turning the target-rod swings the head 33 in the direction to turn the lever 29, because of the engagement of the roller 37, forming one throwing-member, with the socket 29, and advance the rod 31 to set the distant semaphore at danger, the arrangement being such as to effect this result when the operating-lever attains the position midway between the two table-notches. Continued turning of the target-rod rides the face of the rim 36 against the stop 2 9* to lock the lever 29 and semaphore; and meantime the turning-head 33 has engaged the roller 38 with the socket 330 of the lever 30 to turn the latter and t row the switch for the siding, in which position the switch is held by the engagement of the roller 38 with the socket 30 until it is locked by dropping the operatingdever into the table-notch 19. The described oporation brings the parts of the mechanism to the relative posit-ions in which they are represented in Fig. 7, ready for the reverse throwing to first set the switch for the main track and thereupon turn the semaphore from danger. To effect this last-named purpose, upon raising the operating-lever out of the table-notch 19 it is turned to rotate the target-rod, thereby swinging the head 33 to cause the engagement of the roller 38, constituting the other throwing-member, with the socket 30 to turn the lever 30 in the direction for throwing the switch, which is completely thrown when the operating-lever attains the midway position referred to. Continued turning of the operating-lever until it registers with and enters the tablenotch 18 for the locking purpose, rides the face of the rim 36 against the stop 30 to lock the switch and engages the roller 37 with the socket 29 to turn the lever 29 in the direction for moving the semaphore from danger and hold it there until it becomes locked by introduction of the operating-lever into the table-notch 18. As will be observed, the throw of the lever 29 in one direction is limited by its engagement with the upper stop 26, and the lower stop 27 is engaged by the lever 30 to limit its throw in the opposite direction, whereby the locking efiect described of the face of the rim 36 against the stops 29 and 50 is produced by its abutting them, respectively against the stops 26 and 27. It will also be observed that for the described operations of the levers 29 and 39 they extend normally at an angle to each other of about ninety degrees, and that the throw of each describes an arc of about ninety degrees. This specific arrangement may be varied for different purposes to which my improved mechanism may, with suitable slight modifications, be applied, including that of operating a three-throw switch.

The primary novelty in the present inven tion consists in turning the semaphore and throwing the switch, in succession, and, in throwing the switch, presenting in proper display-position the signal on the switchstand spindle, all by the single operation of turning the spindle by the operating lever continuously in one direction through an arc of or approximating ninety degrees and thereby moving successive/1* at right-angles to each other the rods which respectively connect the distant semaphore and the s\ itch with the throwing mechanism of the stand.

"What I claim as new and desire to secure by Letters Patent is 1. In a switch-stand, the combination with a rotary spindle carrying an operating lever, of a pair of cranks, a distant-semaphore operating-rod connected with one crank and a switch-operating rod connected with the other crank, and means on said spindle engaging said cranks by turning said lever in one direction to move said rods successively, for the purpose set forth.

2. In a switchstand, the combination with a rotary spindle carrying an operating lever, of a pair of cranks extending at an angle each to the other, a distant-semaphore operating-rod connected with one crank and a switch-operating rod connected with the other crank, and means on said spindle engaging said cranks by turning said lever in one direction to move said rods successively at right-angles to each other, for the purpose set forth.

3. In a switchstand, the combination with a rotary spindle carrying an operating handle, of a crank head thereon provided vith upwardly and downwardly projecting throwing-members, an upper lever fulcrumed between its ends on said stand to extend at one end into the path of said upwardly projecting member, and a lower lever fulcrumed between its ends on said stand with one end extending into the path of said downwardly projecting member, a distantsemaphore operating rod connected with the free end of one lever, and a switch-operating lever connected with the free end of the other lever, said crank-head engaging said levers to move the same successively when the switch spin dle is turned.

4. in a switch stand, the combination with the spindle, of a crank-head thereon provided with upwardly and downwardly projecting throwing-meinbers, an upper lever fulcrumed between its ends on said stand to extend at one end into the path of said upwardly-projecting member and provided on said end with a locking-stop, a lower lever fulcrumed between its ends on said stand to extend normally at an angle to said upper lever with one end extending in the path of said downwardly-pro}ecting member and provided with a locking-stop, and throwlimiting stops on said stand for said levers cooperating with said crank-head, for the purpose set forth.

5. In a switchstand, the combination with the spindle, of a crank-head thereon provided with upwardly and downwardly projecting throwing-memb ers, an upper lever tulcruined between its ends on said stand and containing a socket in one end extending into the path of said upwardly-projecting member, with a locking-stop on said end, and a lower lever fulcrumed between its ends on said stand, extendlng at an angle to said u per lever and containing a socket in one en extending into the path of said downwardlypro'ecting member, with a locking-stop 011 sai end, for the purpose set forth.

' respective y projecting upwardly and downwardly from said rim, a fulcrum pin on said 15 stand, an upper lever fulcrumed between its ends on said pin and having in one end a socket extending into the path of said upper member and provided with a locking-stop, a lower lever fulcrumed between its ends on said pin to extend normally at an angle to said upper lever and having a socket in one end extending into the path of said lower member and provided with a locking-stop, and throw-limiting stops on said stand for said levers cooperating with said rim, for 25 the purpose set forth.

EUGENE N STROM.

In presence of RALPH A. SOHAEFER, A. U. TI-IORIEN.

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