US1261206A - Switch-lock. - Google Patents

Description

N. J. BECKNER & 1. A. MORRISON.

SWITCH LOCK APPLICATION nun NOV. 8. 1911.

1 ,Q6 1 ,%U6@ Patented Apr. 2, 1918.

2 SHEETS-SHEET I.

ATTORNEY N. J. BECKNER & J. A. MORRISON.

SWITCH LOCK.

APPLICATION man NOV. 8. 1911.

1561,06, Patented Apr.-2,1918.

2 SHEETS-SHEET 2- INVENTOR5 ATTORNEY a line 4-4;of Fig. 2, and

NOAH J. nncKnEaAnn JOHN A. MORRISON, OF NORTH YAKIMA, WASHINGTON,

ASSIGNORS TO SAFETY PATENT CQ, A CORPORATION OF WASHINGTON.

To all whom may concern:

Be it known that we, NOAH, J BECKNER and JOHN A. MORRISON, both native-born,

.railway switch stands, and has foraniobject to provide a lock readily attachable to asta'ndard switch stand and adapted-to lock the leverin one position thereof, and em bodying means for; preventing the. removal of, the key; for actuating the look while the locking'mechanism is in an unlocked position, a

k Another Object ofthe invention is to provide a lockingmeans OfflthGflhtl'fiCtGI above described embodying a; key actuated locking bolt adapted to retain the key withinthe look while thebolt is in anunlocked position, and a releasing means engageable by the switch lever when the switch lever .isthrown to an off position to, release the r mechanismafter the bolt has been returned tolocking position so as to permit removal ofthekey. l a Inaddition to the foregoing our invention comprehends improvements in the details of construction and arrangement of the parts to be hereinafter more fully described and particularly set forth in the appended claims.

Inthe accompanying drawings in which similar and corresponding parts are designated by the-same characters of reference throughout the several views in which appear: a V r a Figure 1, is a view in frontelevation of a portion of aswitch stand illustrating the application thereto of our invention.

Fig. 2, is alongitudinal vertical section they ; taken through the casing Of our improved lock.- i 3 a Fig. 3, is a horizontal section taken On the line 3+3, of the preceding-figure. Fig.4, is a vertical; section taken on the (Fig; 5, is a similar view taken 5- 5ofFig. 2; l

With reference to the drawings, 10tindi-- front and rearwalls; 11 and'12 f Therear wall 12 is formed with cates a casing including Specification of Letters Patent.

k y a a i g" on the line SWITCH-LOCK.

ratenteanpr. 2, 1918..

Application filed November 8, 1917. Serial No. 200,963.

r a pair of laterally extending spaced ears 13 to engage Opposite sides of the upper end of the switch standard indicated at 141, the ears being apertured to receive the bolt 15 pro vided in said standard to pivotally support the switch lever indicated at 16, the lever being movable from an ofl' or depending position asshown in full lines in Fig. 1, to a horizontal or Operative position as shown in dotted lines. The rear end of the lever 16 isformed with a laterally extending lug 17, adapted to enter an opening18 in the-rear wall 12 of the casing when the lever is in an offset. position. plate 12 is'formed with an overhanging lug l9to engage over the top' edgeof the switch the lock casing thereto; A

stand to secure pair of flanges 20- and 21 are formedadjacent The upper endof'the rear theverticaledges of the opening18 of the rear wall of the casing and extend inwardly,

the flange 20- having an Opening through whicha horizontal transversely movable locking bolt guides 23 being provided face of the plate 12 of thecasing to form a guide and support for the will be noted that the bolt movement from a position to extend entirely across the opening 18, to a position within the. casing wherein the opening 1801: the casing is left unobstructed. a

A keyhole-24 is formed in the front plate 11 of the casing adjacent the upper end thereof and adjacent one vertical edge to receive a key25 which may be of hollow construction whereby a stud 26 forming a ward andsecured to the inner face of the plate 12; may enter the recess of the key. A bolt aotuating lever indicated at 27 is is mounted for rotation about a pivot 28, one end of the lever having an elongated opening 29tl'1rough which a pin 30 looking bolt 22 extends whereby the'locking locking'bolt. It 22 is capable ofprovided and] 22 extends, a pair ofspaced, upon the' inner secured tothe bolt may be shifted by actuationof the lever.

The Opposite or upper. end bifurcated to form opposed 32 between which the keys operate. inner surface of the bifurcated portion is curved and is engageable the key whereby the levermay be oscillated in one direction orthe other as thekey is rotated. The terminal of the lever is; members 31 and 1 The by the bit- 3310f,

of the member 321 of the -bifurcated portion is=-formed with a lateral extending lug 34-;engageable by the 15 lever -10 the bolt 22 60 directionibit of the key to prevent further rotation of the key when the same is rotated in a direction to unlock the bolt.

A mecha'nisl'n for retaining the bolt 22 in 5 an unlocked position is provided consisting of a lever 35 located in the lower portion oi the casing and pivotally mounted upon a stud 36, and having an elongated opening37 in its upper end to receive the pin 30 of the looking bolt, the lever alsohavi-ng a lug 38 at its opposite end for engagement with the lever 12 mounted upon ears 413 formed by bending the material of the flange 21 which is located ad acent the opening 18 of the cas1ng, one' end of the lever 42 extending within the caslng and the other extending 25 across th'e opening 18 in a position to be engagged and actuated by the lug 17 of the swltch lever 16 when said lever is moved to a depending or on position. The inner end of the lever 12 is formed with adependmg extension 4 1 which is pivotally connected to' a link 4:5 at one end thereof, the other end of the link being pivotallyconnected to the latch lever 10" as clearly shown in Fig. 3a A leaf spring -16 is secured at one end to mug-e7 extending inwardly from the rear face of the rear plate 12 of the casing while the opposite end engages the inner end of the lever 42 to retain the parts of the releasing mechanism in a manner to insure engagement ofthe lock 38 of the bolt retaining mechanism when said bolt is moved to an unlocked position.

In operation, to lock the switch lever the same is moved to a depending position 45 whereby the laterally extending lug 17 at the upper end is inserted in the opening 18 in the rear of the casing and engaged against the lever 42, rocking said lever whereby to rock latch lever 10 and to disengage the hook end 39 thereof from the lug 38 where.

by when" the key is inserted in the lock and rotated counter-clockwise, the bit 33 will eng-age the member 31 of the lever27 and move the locking bolt 22 to a closed position, the

to bolt entering the aperture in the end of the 1ug17 of-the switch lever thereby preventingm'ovement of said switch lever to an operative position. The locking bolt 22 may he released It will be noted however, that when the key isthus rotated to reverse position, the bit of the keyris positioned with relation tothe'key hole in a manner to pre vent removal of the key and at the same time upon a movement'of the switch lever to reby rotating the key in a reverse move the lug 17 thereof from within the easing the spring 16 by engagement with the lever 1-2 to which the lever 10 is connected will urge the latch lever 10 in a position to engage the lug 38 whereby the locking bolt 22 will be held in an unlocked position and prevent the removal of the key inasmuch as the key -must be returned to a position to bring its bit 33 in alinement with the key hole which movement of the key is precluded by engagement with the member 31 of the lever, 27. It will be apparent therefore,that the key cannot be rem-overeat the lock until the switch lever 16 is returned to an oil or depending position whereby the lug 17 may engage the "level-42 to release the bolt retaining mechanism A afety device is thus provided which will insure the return of the switch lever time, the ditfioulty in removing the key from the lock notifying the swite'lr operator that the switch lever has not been properly p0- sitioned.

While we have illustrated and described our invention with some'degree of partieu larit'y, we realize that in practice various al teratlons thereover may be made, an'd' we" therefore desire to reserve the right and privilege of changing the form of the details of construction; or otherwise altering the arrangement of the correlative parts without de artin from thespirit of the invention or the scope of the appended claims.

Having thus described our invention, what we claim as new and desire to secure by Let ters Patent 1s:

1. A- lock for switch stands, including a casing having an opening therein,' a bolt slidably mounted to extend across the'opem ing and to enter the aperture of one' end of a switch lever, a lever pivoted withinthe casing having one end pivotally connected to the bolt, the other end being bifurcated to receive a key therebetween whereby thelever may be oscillated, means for retaining the bolt in an unlocked position, and means forming an obstruction" across the opening of the lock casing and engageable by the end of the switch lever to release said retaining means to permit the bolt tobe shift ed to closed position.

2. A 10a; for switch stands including a casing having an opening therein, a bolt slidably mounted to extend across the opening and to enter the aperture of one end of a switch lever, key operated means for shift ing the bolt, a" lever pivotally mounted and having one end pivotally connected to the bolt tobe'actuated thereby,a lug on the'opposite end of the lever, a latch leverhavin'g a hooked'terminal to engage the lug oithe first mentioned lever, and a leve'rfpivotallv mounted having one end extending acrdss the Openin of the lockcasing'tc form an obstruction therefor, engage'able by to an off position each the end either member, an inwardly 1,2e1,2oe

of the lever to rock said latch member to release the lever whereby the locking bolt may be moved to locked position. i

3. A look for switch stands, including a casing having an opening therein, a bolt slidably mounted to extend across the open ing and to enter the aperture of one end of a switch lever, a lever operatively connected to the bolt to shift the'same, a pair of spaced members formed on the lever to receive the bit of a key therebetween whereby to move the lever by engagement of the bit with extending lug on one member engageable by the bit to prevent movement of the key in one direction, a

Copies of this patent may be obtained for five cents each, by addressingthe lever shiftable by movement of the bolt, means engaging said lever when the bolt is in an unlocked position to retain the same therein, and means forming an obstruction across the opening of the lock casing engageable by the end of the switch lever to release said remaining means to permit the bolt to be moved to closed position.

In testimony whereof we aflix our signatures in presence of two Witnesses.

NOAH J. BEOKNER. JOHN A. MORRISON. Witnesses:

FRANK J. REAMIES, THOMAS H. WILSON.

Commissioner of Iatentt,

Washington, D. 0.

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