US1458432A - Switch lock - Google Patents

Description

June, R2, 11923. 11,458,432

.1.l r1d MOORE SWITCH Lock i i ,i Filed FebQza. 192s 2 Sheets-Sheet 1 k im `v w l 4 "nvm/70H [l JTL. Moore.

' A TTOR/VEYS June 12,1923. 145mg@ J. D. MOORE SWITCH LOCK Filed Feb. 28. 1923 2 Sheets-Sheet 2 Patented June l2, 192.3.

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JOSEPH D. MOORE, OF JACKSONVILLE, FLORIDA, ASSIGNOB 0F ONE-HALF TO JAMES S. PETERSON, OF JACKSONVILLE, FLORIDA.

SWITCH LOCK.

Application filed February 28, 1923.l Serial No. 621,807.

T0 all whom t may concern:

Be it known that I, JOSEPH D. Moons, aA citizen of the United States, and a resident of Jacksonville, in the county of Duval and State of Florida, have 'invented certain new and useful lmprovements in SwitchLocks, of which the following is a specification.v

My present invention relates generally to switch locks and more particularly to switch locks of the type described and claimed in my Patent 1,098,958 dated June 2nd, 1914, with respect to which my application covers certain improvements whosefobject in the first instance is to permit of the release of the lock by virtue of the initial movement of the switch throwing lever, and at the` same time provide such connections that the switch stand and the switch throwing parts will be so divorced from the switch that the latter will be unaffected by breakage of the switch stand and its support either in whole or in part.

A furtherobject is the provision of certain improvements in the main switch slide plate as well as in the 'shape of the lock releasing lever whereby to avoid operating dis- 'advantages towhic'h my former construction vention as in Figure 1,

was susceptible.

Yln the accompanying drawings illustrating my present invention land forming a part of this application,

Figure 1 is a perspective view illustratingA slide beneath the rail 11 and switch point 13 the practical application of my invention,

Figure 2 is a perspective view of thev r switch throwing shaft as well as thelock releasing upright and portions ofconnectio'ns of these parts,

Figure 3' is a detail perspective view of the slide plate and the parts carried thereby,

Figure 4 is a transverse vertical section showing the practica-l application of my inkFigure 5 is a vertical sectional view through the switch stand, andV Figure 6 is a detail perspective view of certain parts of the switch stand and switch throwing mechanism. v

Referring now kto these ligures I have and movable switch points 12 and 13, the latter of which are connected by tie bars 14 and are shiftable at theirl extremitiesupon slide plates 15 and 16, thelatter known 'as a No. 1 slide plate.v These slide plates are securely fastened upon one of a pair of ties plate 16 has a downwardly offset shelf 24 at Y one side, which depends between the ties 17 and to which is secured one end of an up wardly and outwardly inclined leaf spring 25 having beneath its outer upper end a coil spring 26, this free end of the spring 25 being thus supplemented by the spring 26 bearing upwardly beneath the free outer end of the lock plate 27. This lock plate whose outer shouldered portion 23 is adapted for engagement with the outer edge of the base of rail 11, is connected in vertically movable or swingable relation at its inner end to the extremity of the switch point 13 by virtue of verticall spring bolts 29 so that when the switch point 13 is shifted outwardly against the inner surface of rail 11, the lock plate will be pressed vertically into locking position and securely hold the switch point against the rail until the outer shouldered portion 28 of the lock plate is pressed dow11- wardly to released position where it may is shifted inwardly away from the rail l1. In accordance with `my present yimprovements the free side edge and one end of the downwardly offset shelf 24 of the slide plate 16 are provided with upstanding walls 30 and 31, the former beingcut away upon an incline corresponding to the incline ofthe leaf spring 25 and the latter upstanding` at the free end of the leaf spring so that this leaf spring is thus/boxed to the extent of preventing dirt and debris from getting beneath the leaf spring and obstructing its free yielding movement in a. downward direction. ln further accordance lwith my; present invention the slide plate 16 has at its outer end an extended tongue 32 from which a stud 33 projects laterally to form the fulcrum of the lock releasing lever 34, the latter being in the nature of a bell crank whose inwardly projecting arrn is adapted to bear upon the free end of the lock plate 27 when' the parts 'are in the locked position and i le' -whoseouter depending arm-receives one end of a cnn'eeting rod 35. This cehnecting rod v is preferably in two sections connected by a rocker arm 38.

`turnbuclrle i 36 and extending',through a guide 37, its opposite end being connected toone yend of a rocker arm 38 from which, intermediate its ends, a foot plateBQ Apro jects beneath a portion ,of the switch. stand 19 as plainly seen by reference tev Figures 2 y and 4.

The .free of the lock releasing bell crank 34 adapted as before stated to restV upon the shouldered outer portion 28 of the lock plate 27 sovth'at when thev depending arin ofxthevb'ell cranl'ris y'shifted outwardly the said lockA plate be depressed to lockedposition,- is preferably provided atv its vfree endpwith alreduoed rail engaging nose 40adapted toeng'age the base of the rail 11 when'the lock 'plate is depressed just sition,`in `order to prevent roekingmovement ofthe bell crank lever to such anextent thatits inwardly Aprojecting arm might project into the path of outward movement' ofthelloclr plate 27 when the latter is`subseqii/eifi'tlyv "shifted outwardly toward the locked position'. Y

Referring .now to Figures 2, 4 and `5 particularly it will be `noted that the switch 'actfuatingy lever 41 is .fulcrurne'd intermediate its endsas lat 42 to thevupp'er squared por` vtion ofthe uprightfshaft 2O and "isV pi-votally connected at 43 between its handle and its fulcrum 42, to the upper ends'of arms 44 upfstanding from the vertically shiftable cap pla-te 45 of the switchgstand 19, which arms 'are pivotally yconnected aty their lower ends v4to the cap plate. Beyond its fulcruin 42'the lever4l provided with a presser plate 46 above the upper'end of awvfertical'lyishiftable presser rod 47 upsitanding through the switch stand 19 with its lower end disposed above and movable downwardly into engagement with lthey foot piece '39 of the rlphe upper portion of the presser rodi'47 projects vertically throughy an varcuate @slot 48 of the cap p`late`45,vthe latter of which in its normal lowered position rests upon Vthe upper surface of the switch 'stand`19 "and 'is prevented from rotation and -in turn holds the shaft 2O against rotation by virtue Yeo of anupstanding squared a'nd reduced boss Y49 of the switchnstand and a `squared socket 50 in the lower surface ofthe cap Lplate into which the b o'ss extends-'when the cap A'plate i's loweredfo-nto the "switch-stand. While I have` shown no y.particular form 'of locking means, it will be -understoodfthat in accord-l "ance with'the usu'al :practice `'the switch -tlirowing ylever-41 will be locked 'in Eits Alow- :ered position'to the switch standf19 by any 'ofthe well lnown 'locking means lfor 4this `purpose andtlia-t when-fthusnloclred in its position aswfshown in 1F igure 4` above the lowered position the switch point v13 isi lagainst the rail 11"audl locked iin-'contact therewith ybyl the locking plate 27, the presser rod 47-being at `this tirnegin its upper foot piece 39 of the rocker arm 38 so that'v should the switch stand, with the parts in this position, be partly or wholly demolished the locking plate k2,7l will remain in locked position holding the switch lpoint 1 3 against the rail 11.V Furthermore in this, the locked position 'of 'the parts, the presser rod` 47 is positively held from lowering movementby virtue of a locking bar 51 `pivo'tally connected atene end' as at 52 to onev side of the' switch throwing lever 41 andy 'extending through :the 4guide bracket 53 upstanding from the cap V'plate 45, the presser rod 47 having an `annular groove 54vin`to Vwhich the free end 'of the locking bar 51 extendsfwhen the switch throwing lever 41is in its lweredl position.

VhenV it is that is shift the switehpoints 12 and 13 so `that the former will engage rail l0 and the latter will move away from 'rail 11, the switch throwing lever 41 must rstbe 'raised in 'order to lift the cap plate 45 free of the switch ystand boss 49 Iand during this move-A ment the locking bar 51 is withdrawn fromY engagement with the presse-r rod 47 andthe presser plate 46 of lever`51 moves 'downwardly rinto, engagement with the upper rend of the p-resser rod 47 So'lthat ,the latter will be lowered and upon engagement at itsy lower Eend with the foot piece .'39 'will rock the rocker 'arm 38 and; in this way shift the connecting' lrod 35 in thefdirection of its lengths@ `as to force the inwardly ,projecting horizontal. ar1n..34of the be'l'lv crank downwardly into engagement `with the desired vt'o y'throw fthe switch,

shouldered lend 28 of the look plate 27 and inV turn flo-wer said lock :plate to released position."V This action of' the parts takes .place kvdurying the up-'ward swinging movement'of 'the switch lever 41 and is complete when said lever is elevazted'fto fthe position shown in Figures 5 and .6 wherein thelca'p plate 45`is above the bossl 49 vof the switch stand l and fthe shaft 2O is thus free for rotatable smovement by swinging the switch throwingilever 41. This swinging movement vof the lever through approximately ninetyfdegrees :is suflicient. through lthe shaft 20 and lits lower crank arm 22, tofthrow Ethe ,-switch'ipoints against rail 10 and away from rail 11 'by virtue of the connecting Arod 23 and its engagement with the extended yportion `of the tiebar 14. f, f

vVVhen'the parts iarerrestoredfto the locked position-shown in Figure 4and the .lever 41 4is flowered, :vertical finovement lof thelock plate :2.7 to locked pvositionunder tension -o'ffthe 'springs 25`and -26 restoresthepres'ser lli rod 47 to its upper position where as above stated it is securely held against accidental lowering movement by virtue of the locking bar 5l and the annular groove 54.

I claim:

1. ln al switch lock of the character described, a vertically swingable lockv plate, a slide plate for a switch point having a downwardly offset shelf at one side beneath the clock plate, a flat spring inclined along said plate and secured at one end thereto, having its other end hearing upwardly against the lock plate, said shelf having an upstanding side wall along the outer side of said spring member and having an upstanding end wall across the free end of the spring for the purpose described.

2. ln a switch lock, a vertically swingable lock plate, a slide plate for a switch point having a downwardly oset shelf, spring means on the said shelf bearing upwardly against the said lock plate, said shelf having walls along one side and one end to prevent the accumulation of dirt beneath the said spring means, a lock releasing lever having one end bearing on the lock plate, and an extension formed on the said slide plate, having a bearing member for the said releasing lever.

3. In a switch lock, the combination with a rail and a switch point shiftable into and out of engagement with t-he rail, of a vertically swingable lock platecarried by the switch point and having a shouldered rail engaging end, spring means for shifting said plate upwardly into engagement-,with the rail, and means for depressing said lock plate to released position including a lever one end of which is shiftable downwardly upon the shouldered end of the lock plate, said lever having an extended lip at its said free end engageable in its lower active position with the base of said rail to prevent downward movement of the lever into the path of return movement of the lock plate.

4. The combination with a switch stand and switch throwing connections including a main lever on the stand, of a switch lock, and releasing connections for the lock including elements, certain of which elements are independent of the switch stand and normally Iextend adjacent to and free of connect-ion therewith andcertain of which elements are supported by the stand and movable upon actuation of said leverlinto elective engagement with the first named element. i f

5. In a switch lock, the combination with a switch stand and a switch throwing lever, of a presser rod upstanding through said stand, means carried by the lever for depressing said rod when the lever is raised, an automatically engageable lock plate, and lock releasing connections including a member normally positioned below and free of connection with said rod and with which the lower end of the rod is engageable.

6. In a switch lock, the combination with a switch stand and a switch throwing lever, of a presser rod upstanding through said stand, means carried by the lever ior depressing said rod when the lever is raised, an automatically engageable lock plate, lock releasing connections including a member with which the lower end of the rod is engageable, and means carried by said switch throwing lever and said presser rod and engageable when the lever is in its normal lowered position, adapted to lock the rod. against vertical movement.

JOSEPH D. MOORE.

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