US1098021A - Switch-stand. - Google Patents

Description

R. J. DAVIDSON & J. B. STRONG.

SWITCH STAND. APPLICATION FILED SEPTA, 1912'.

1,098,021. Patented May 26, 1914.

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R. J. DAViDSON & J. B. STRONG.

SWITCH STAND.

APPLICATION FILED SEPT. 4, 1912.

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R. J. DAVIDSON & J. B. STRONG.

SWITCH STAND.

APPLICATION FILED SEPT. 4, 1912.

Patented May 26, 1914.

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UNITE STATES PATENT OFFICE.

ROBERT J. DAVIDSON AND JAMES B. STRONG, OF HILLBURN, NEW YORK.

SWITCH-STAND.

Specification of Letters Patent.

Patented May 26, 1914.

Application filed September 4, 1912.' Serial No. 718,544.

To all whom it may concern Be it known that we, ROBERT J. DAVIDSON and JAMES B. STRONG, citizens of the United States, residing at Hillburn, in the county of Rockland and State of New York, have invented certain new and useful Improvements in Switch-Stands, of which the following is a specification.

This invention relates to switch stands used in railway construction, more particularly to the type wherein the switch points are locked in their closed positions.

The primary object of this invention is the devising of means whereby the locking operation may be positively efi'ected by movement of the switch actuating means independently of the operation of said actuating means when throwing the switch, there-- by adapting the locking means to serve as an actuating means and control for other suitable mechanism, as for illustration, a

signaling mechanism, which will continue its control upon said mechanism during the switch throwing operation and until the locking operation is again efi'ected.

The various other objects of the invention will be set forth in the following description of certain mechanism embodying the invention.

In one embodiment of our invention, the locking block, which is mounted on the switch stem or spindle, is provided with a collar having a petticoat or apron which is adapted to engage the jaws of a rod connected to a locking pin that is in position to engage a locking bar operatively connected to the switch points. When the main line is clear, the apron portion of the collar engages the jaws of the rod, throwing the locking pin into engagement with the bar when the handle is lowered and holding the pin in this position. l/Vhen the switch han dle is raised, it carries with it the rod engaging the collar drawing the locking pin out of engagement with the bar, which movement of the locking pin may be utilized for simultaneously operating other mechanism, as for example a danger signaling device. The handle may then be turned to throw the switch points into the siding whereby the apron portion of the collar is disengaged from the jaws of the rod, allowing the handle to be lowered while the locking pin is at rest out of engagement with the bar.

7 In another embodiment of our invention,

two locking pins are used to positively lock the switch points in both positions, each of the'pins being capable of actuating separate mechanisms, as for example two signaling devices, one for indicating when the main line is clear, and the other for indicating the condition of the branch or siding line. Both of the locking pins are actuated by the switch operating handle and are connected thereto through rods provided with jaws engaging a collar formed 011 the locking block substantially as in the first embodiment of our invention. The collar is provided with an apron which is so positioned as to engage one or the other of the rods 7 when the handle is in its respective positions in which the switch points have been actuated to clear the main line or to connect the branch or side line.

While we have shown two specific embodiments of our invention, it will be understood that various modifications may be re sorted to within the skill of the mechanic without departing from the spirit and scope of the invention as defined in the claims.

In the drawings, Figure 1 is a plan of one form of our invention illustrating the switch points as thrown to the side line, and the locking pin disengaged. Fig. 2 is an elevation illustrating the switch points in thrown position together with the locking bar. Fig. 3 is a section through line 3-3 of Fig. 1, illustrating the switch stand in the position it assumes when the switch points are thrown to clear the main line. Fig. 4 is a section illustrating the switch stand in the position it assumes when the switch points have been partially thrown, the handle being still in raised position. Figs. 5, 6 and 7 are details illustrating the connection between the locking block and the rod actuating the locking bolt in the various positions the parts may assume. Fig. 8 is a plan of another form of our invention having two locking pins. Fig. 9 is a fragmental elevation illustrating the locking bar. Figs. 10, 11 and 12 are details of the connection be tween the locking block and the rods actuating the locking pins illustrating the various positions they may assume.

Referring to Figs. 1 to 7 illustrating one embodiment of the invention, the operating handle 1 is pivoted upon a sleeve 2, attached to the spindle or stem 3, rotatably mounted in the casing 4. This spindle is connected with the switch points 5, through a connecting rod 6, so that when the spindle is r0- tated by the handle, the switch points will be shifted into position to clear the main line or to throw in the shunt line. The handle may be locked to a locking tongue 7 on locking block 7. I/Vhen the handle 1 is turned about its pivot on the sleeve 2, it actuates mechanism whereby the locking pin or bolt is released from engagement with the switch points, which operation of the pin may conveniently be utilized for actuating other mechanism, as for example, dangeisignaling mechanism. For this purpose, the handle 1 engages a lug on the locking block 7 the latter being slidably mounted upon the sleeve 2 and constrained to rotate therewith. The locking block has extending laterally therefrom, a collar 8, formed with a petticoat 9, engaging jaws 10 of a rod 11, connected by any desired means as a bell-crank 12 and a rod 13 to a locking pin 14 slidably mounted in position to engage a bar 15 having a single aperture 150 therein through which the pin or bolt may pass. This bar 15 is connected to the switch points and moves together therewith. When the switch points are in position to clear the main line, the aperture is in register with the bolt 14, so that when the handle is lowered in the position indicated in Fig. 3, the bolt passes through the aperture, look ing the bar and the switch points in position. To facilitate the bolt 14 actuating other mechanism when it is itself actuated, it is preferably connected to a rod 16 which may operate any suitable mechanism desired. In the present instance it is illustrated as operating an arm 17 of a shunt box 18 which may operate any desired mech anism, as for instance a signal indicating danger.

Fig. 5 illustrates the position of the collar and petticoat or apron of the locking block with reference to the rod 11 when the handle is lowered and the switch points are thrown to clear the main line. The collar and petticoat fill up the entire space between the jaws and thus when the handle is low ered, it depresses the rod 11 to project the locking bolt into the aperture in the locking bar. Fig. 6 illustrates the rod llraised and the locking block partly rotated and still filling up the entire space between the jaws of the rod. In Fig. 7, the locking block has been rotated sufliciently to disengage the petticoat from the jaws and lowered without actuating the rod 11. In this position, the switch points are thrown to the shunt line, and the locking bolt is out of engagement with the bar In the form illustrated in Figs. 8 to 12, the locking block 7 has a collar 8 and a petticoat 9 engaging the jaws 10 and 10 of two rods ll and 11 mounted on each side of the block and connected by rods 13 and 13 to locking pins 1 1 and 14: which are mounted in position to engage apertures 150 and 150 formed in locking block 15 connected with the switch points. The pins M and 14 respectively are connected by rods 16 and 16 to arms 1'? and 17 of shunt boxes 18 and 18 which may operate any desired mechanism, when their respective pins are projected into the apertures.

With this construction, the switch points :1

are locked both when thrown in position to clear the main line and when thrown over to the shunt line.

' Referring to Figs. 10, 11 and 12, it will be noted that one or the other of the rods 11 and 11 is thrown down to lock the lock ing bar and to operate the corresponding mechanism. In Fig. 10, the rod 11" is lowered to maintain the pin 14E in engagement with the bar 15 to lock the switch points in position in the shunt line. In Fig. 11, the locking block has been raised and turned into an intermediate position, both of the rods 11 and 11 being raised. In Fig. 12,

the locking block has been rotated into po-- sition to free the rod 11 and then lowered to actuate the rod 11 to project the pin 1 1 into the corresponding aperture in the locking bar 15 and also to operate the corresponding signal through shunt box 18. In this construction, the switch is always positively locked in one position or the other.

Having thus described our invention, we clain 1. A switch stand comprising a manually operated member, means connecting said member with the switch points, a lock for the switch points, comprising a member moving with said switch points and another member positively actuated by said manually operated member during movement thereof, in one location, said manually operated member having independent movement in another location.

2. A switch stand comprising a manually operated member, means connecting said member with the switch points actuated during rotary movement of the manually operated member, a lock for the switch points comprising a member moving with said switch points and a bolt adapted to be projected into engagement with said lock member positively actuated by said manually operated member during vertical movement thereof, in one location, said manually operated member having vertical movement independent of the bolt in another location thereof.

3. A switch stand comprising a stem or spindle, a handle pivotally mounted thereon, a block slidably mounted on said spindle engaged by the handle, said block having a collar and a petticoat extending therefrom, a rod'having a jaw engaged by said collar and petticoat to operate the same, a member movable with the switch points, and a locking bolt connected to said rod adapted to engage said member.

4:- A switch stand comprising a stem or spindle connected to the switch points, a handle pivotally mounted on said stem to swing about -an axis transverse to the axis of the stem, a block engaged by the handle slidably mounted on the stem but constrained to rotate therewith, a collar on the block having a petticoat extending therefrom for a portion of its circumference, a rod having jaws engaging said collar and petticoat, a locking member operated by said rod during the pivotal movement of the handle to lock and unlock a member moving with the switch points, the movement of the stem in operating the switch points serving to disengage the petticoat from the rod.

5. A switch stand comprising a stem or spindle connected to the switch points, a handle pivotally mounted on said stem to swing about an axis transverse to the axis of the stem, a block engaged by the handle slidably mounted on the stem but constrained to rotate therewith, a collar on the block having a petticoat extending there from for a portion of its circumference, a rod having jaws engaging said collar and petticoat, an apertured bar movable with the switch points, a locking bolt operated by the rod during the pivotal movement of the hand to lock and unlock said bar, the movement of the sliding block during the rotation of the stem serving to disengage the petticoat from the rod and releasing from operative engagement with the handle.

6. A switch stand comprising a stem or spindle, a handle pivotally mounted thereon, a block slidably mounted on said spindle engaged by the handle, said block having a collar and a petticoat extending therefrom, a rod having a jaw engaged by said collar and petticoat to operate the same, a member movable with the switch points, a locking bolt connected to said rod adapted to engage said member, and means controlled by the handle for moving said petticoat into inoperative position relative to said rod.

7. A switch stand comprising a stem or spindle connected to the switch points, a handle pivotally mounted on said stem to swing about an axis transverse to the axis of the stem, a block engaged by the handle slidably mounted on the stem but constrained to rotate therewith, a collar on the block having a petticoat extending therefrom for a portion of its circumference, a rod having jaws engaging said collar and petticoat, a locking member operated by said rod during the pivotal movement of the handle to lock and unlock a member moving with the switch points, the movement of the stem in operating the switch points serving to disengage the petticoat from the rod.

8. A switch stand comprising a stem or spindle connected to the switch points, a handle pivotally mounted on said stem to swing about an axis transverse to the axis of the stem, a block engaged by the handle slidably mounted on the stem but constrained to rotate therewith, a collar on the block having a petticoat extending therefrom for a portion of its circumference, a rod having jaws engaging said collar and petticoat, an apertured bar movable with the switch points, a locking bolt operated by the rod during the pivotal movement of the handle to lock and unlock said bar, the movement of the locking block during the rotation of the stem serving to'disengage the petticoat from the rod and releasing the latter from operative engagement with the handle.

9. A switch stand comprising a manually operated member said member with the switch points, a lock for the switch points comprising a member moving with said switch points and a member positively erated member, the movement of said manually operated member into position to operate the switch points serving to disconnect said positively operated member from the l ycking member actuated thereby and the return of the manually operated member to its original position serving to connect said locking members, said manually operated member having independent movement in intermediate locations.

10. In a switch stand, a switch-point-ac tuating spindle, a locking block rotatable with said spindle, a manually operated member for rotating said spindle and for sliding said block relative thereto, a rod actuated by the sliding movement of said block, said block in a certain position relative to said rod having a sliding and rotary movement independent of the rod whereby said switch points may be moved without actuating said rod.

In testimony whereof, we afiixed our signatures, in presence of two witnesses.

ROBERT J. DAVIDSON. JAMES B. STRONG. Witnesses J. EDGAR DAVIDSON, LA VERNE EDWARD TRAVERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G.

and means for connecting actuated by said manually op

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