US964910A - Switch-lock. - Google Patents

Description

A. T. 8: G. J. HANSON. SWITCH LOCK. APPLICATION FILED JUNE 16, 1909 Patented July 19, 1910.

UNITED STATES PATENT OFF-ICE.

ALBERT T. HANSQN, ANTIGO, AND GEORGE J HANSON, OF MILWAUKEE, WISCONSIN.

SWITCH-LOCK.

' To all whom it may concern:

, part of this speci cation.

This invention relates to improvementsin switch locks, particularly adapted for use in connection with railway track switches.

One of the objects of the invention is to obviate the use of independent switchlocks and to provide a switch stand with new and improved non-se arable means for locking the switch lever in positions of adjustment. A further object of this invention is to provide the lever handle of a switch stand with a lock inserted therein which is adapt- 7 ed to engage'a plurality of bolts fastened to the stand in order to lock the switch in different positions.

Afurther object of this invention is to provide a switch stand with means whereby when the lever has been turned to move a switch rail it is adapted to swing into engagement with one of the bolts and be antomatically locked in adjusted position.

A further object of this invention is to provide a switch stand with bolts which are adapted to be moved into inoperative position when it is desired to leave thcilever unlocked.

With the above, and other objects in view the invention consists of the switch locking means and its parts and their combinations, and all equivalents thereof.

Inthe accompanying drawing in which the same reference characters indicate the same parts in all of the'views: Figure 1 is a side view of a switch stand. provided with the improved locking means; Fig. 2 is a. vertical sectional view of a fragment of the switch lever and lock shown in ei'igagonient with a bolt; Fig. 25 is a fragmentary view of the lever and stand with the lever shown disengaged from the bolt, parts broken away and other parts in section; Fig. 4: is a transverse'section taken on line 4-4 of Fig. 2; Fir. 5 is a fra mental-y view of the lever um stand, the Emit connected to the stand shown swung downwardly out of locking" position; Fig. 6 is a front view of the frag- Specification of Letters Patent.

Patented July 19, 1910;

Application filedv June 16, 1909. Serial No. 502,618.

I ment of the stand shown in Fig. 5, parts shown in section; Fig.7 is a perspective Referring to the drawing the numeral 10 I indicates a switch stand or frame which may be of the ordinary construction provided with a cranked lever shaft 11 to which is connected a rod 12 which extends to the switch (not shown) adapted to be moved thereby. An arm 13 is r1 idly connected to the upper portionof the s iaft and has pivotally connected to the outer end thereof an operating lever 14 which normally depends downwardly therefrom and engages notches 15 provided in a segment 16 forming part of the switch stand. This lever is adapted to be swung out of engagement 'with the notches ofthe segment and turned horizontally to move the switch and. then swung .down into engagement with one of the notches and the lever is then locked by means about to be described.

' The inner edge of the lever is recessed to accommodate a lock 17 which consists ofa casing 18 pin 20 an a pair of spring pressed shouldered dogs 21which are adapted to engage the outer shouldered ends 22 of bolts 23 connected to the switch stand to lock the switch in position. The outer ends of the bolts are pointed in the shape of an arrow head in order to force the shouldered ends of the dogs'apart to engage-the shoulders 24 of said dogs. The dogs are adapted to be moved farther away from each other to release the bolt in engagement therewith by means of a key provided with diametrically opposite positioned bits 26 which are adapted to engage said dogs and force them apart torelcase the bolt. The lock casing is provided with four pins 27 and with a circular flange 28 and the key bolts are correspondingly notched to permit the key being turned. An escutcheon plate and swinging cover 29 cdvers the key hole to protect the lock from dust. j

The bolt 23 consists of a fixed member 30 rigidly connected to the switch stand and a swinging member 31- pivotally connected to the fixed memberand adapted to be swung downwardly when it is desired to leave the switch, lever unlocked. The member.31 is provided with a transverse spring latch 32 which is adapted to engagereoesses 33 prointo locke vided in the bifurcated end of the stationary member 30 to hold the swinging member in proper position to be engaged by the dogs of the lock. The number of bolts provided correspond to the number of tracks with which the switch is adapted to connect.

The operation of the switch lock is as follows: When it is desired to move the switch the lever is unlocked from the bolt and swung upwardly to clear the segment 7 and is then turned to move the switch until it. registers 'with the other notch, and it is then swung downwardly into the last mentioned notch and into locked engagement with the bolt in alinement with this notch.

As the dogs of the lock are spring pressed they, will engagement therewith without the necessity of using the key.

. From the foregoing description it will be seen that the switch lock is very simple in construction and operation and requires but a minimum amount of labor to move a switch.

What we claim as our invention is:

1. A switch lock, comprising a stand provided with a switching shaft, a. lever pivotally'connected to the shaft and adapted to turn said shaft a partial rotation, a pluralit of pivoted bolts projecting from the stan and a locking means forming part of the lever for engaging one of the bolts.

2. A switch lock, comprising a stand provided with a switching shaft and a lever holding means, a lever pivotally connected to the shaft and held by the holding means and adapted to turn said shaft a partial rotation when disenga ed from the holding means, a plurality o headed bolts project-- ing from the stand, and a locking dog connected to the lever for engaging one of the bolt headsto lock the lever in engagement with the holding means. y

3. A switch lock, compirsing a stand provided with a switching shaft and a lever holding means, a lever pivotally connected to the shaft'and held by the holding means and adapted to turn said shaft a partial rotation when disengaged from the holding means, a plurality of headed bolts projecting from thesta-nd and extending in a direction I radially from the switch shaft, yielding locking dogs connected to the lever for engaging one of the bolt heads to lock the lever in en agement with the holding means, iainii' a key or moving the dogs to release the 4;. A switch lock, comprising a standpro give and permit the bolt to entervided with a switching shaft and a notched segment, an arm connected tothe shaft, a lever pivotally connected to the arm and adapted to swing into engagement with one of the notches, a plurality of headed bolts pivoted to and projecting from the stand and extending in a direction radially from the switch shaft, yielding shouldered locking .dogs connected to the lever for engaging one of the bolt heads to lock the lever in engagement with the notched segment, and a key for movin the dogs to release the bolts.

'5 A switch%ock, comprising a stand provided with a switching shaft and a notched segment, an arm connected to the shaft, a lever pivotally connected to the arm and adapted to swing into engagement with one of the notches, a lurality of bolts provided with arrow shape he'ads pivoted to and projectin from the stand and extending in a. direction radially from the shaft, yielding shouldered do 5 connected to the leverand positioned Wit in a recess provided in the lever for engaging one of the arrow shaped heads to lock the lever in engagement with the notched segment, and a removable key for moving the dogs to release the arrow shaped head.

6. A switch lock, comprising a stand provided with a switching shaft and a notched segment, an arm connected to the shaft, a

and a removable key for moving the dogs to release the arrow-shaped head.

In testimony whereof, we aflix our signatures, in presence of the witnesses.

' ALBERT T. HANSON. GEORGE J. HANSON.

Witnesses as to Albert T. Hansons signature:

EDW. L. CONWELL, JOHN W. BROWN.

Witnesses as to George J. Hansons signature:

A. L. MORSELL, ANNA F. SCHMIDTBAUER.

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