US1811246A - Jail door mechanism - Google Patents

Description

June 23, 1931. A. E. sHANK E1- AL 1,811,246

JAIL DOOR MECHANISM l Filed May 9. 1930 2 Sheets-Sheet l INVENTORS TORNEYJ June 23, 1931. A. E. sHANK ET AL.

JAIL DOOR MECHANISM Filed lay 9, 1930 2 Sheets-Sheet 2 ffy'. z

Patented June 23, 1931 11N ITED STATES gaivrrruit E. snANK, or yCLEVELANDy HEIGHTS, GorrrErED ErsLEE, or CLEVELAND,

NT QFFICE AND roHN M. LINDEN, or Ens'r CLEVELAND, "onro, AssrGNoRs 'ro THE VAN non-N IRON WORKS COMPANY, orY CLEVELAND, omo, A connota/rr10N,or,01110 i JAIL noon MECHANrsM Appucatin flied May e, 1930. serial No. 451,020.

This inventionV relates -to jail-door controlling mechanismadapted for application to the sliding doors of a row of jail cells wherein, by the mechanism, any or all of Athe doorsmay, from a common pomt be moved between` open and closed positions and positively locked in either position.

Such general type offmechanism' is shown 1n Patent NOS. 1,548,140, 1,587,810, 1,858,148

ments thereof; means such as a wedge bar for elevating the latch bolt above the gap nut, whereby a pull bar with which all of the gap nuts are rigidly associated may be manipulated `to ymove another door 1ndependent of that under consideration; and

means such as a lock barengageable by :the

latchbolt when the door is fully opened or closed and when the latch bolt is raised to release the door from the gap nut, for locking the door in saidA position thereof. Then the door is thus locked by interengagement of the latch bolt and loclrbar 'in` say open position, `and itis desired-to close `the door by the gap nut, and the wedge bar islowered for the purpose of-flowering the latch bolt, it has been foundthat such unauthorized pressure niay be exerted directly on the door -ina direction of.V its sliding movement, that the latch bolt may be` pre'- vented from dropping to engage thegap nut so that the latter may then movewithout moving Vthe door; after which the pressure may be terminated, allowing the'latch'bolt to drop without engaginL the gap nut, thus leaving the door open an unlocked.

-It is the vobject ezt this invention to elimivbolt.`

nate-the possibility of such asituation, and to this end to provide means for causing latch bolt lreleasing movement; of the lock bar, when theV wedge bar is s'et to lower the latch bolt andas the gap'nut starts its movement from the corresponding position. More particularly the invention comprises a dog associated with` thegapnut, and tripper means associated withthe lock bar and with the wedge bar; the tripper means including a trip pin arranged to be lowered into the pathcf the dogwhen the wedge bar islowered to allow llowering of the latch The exact nature of -this invention'together with further objects and advantages thereofwill be apparent from thezfollowingdescription taken in connection with the accompanying drawings, in whichv Fig. 1 is a view vgenerally inV elevation andpartlywin section showinga partially opensliding -vjail door and operating mechanismv therefor, Hthe metal cover plate-for this `operating mechanism being removed thatV the lattermay appear; Fig. 2 is generally van end elevation: of-

the same Yas looking from the right, Fig. 1;

yFigis'an enlarged viewfof parts appearing 1n Fig. 1 Villustrating vthe preferred emfbodimentof this invention; Fig.4is a showing in end elevation of partsappearing in .Fig asviewed from the' left'Fig. 3; and -F1g. 5 isa section as in the plane of line .5*'5,F1g. e.

With referencenow to the drawings, '1 is 'acell door` carried lbya hanger 2fhaving wheels 3 rolling-on ways 4 between dooropen and door-closed positions. 4 areywithnahousing zhavinga vcover plate fremoved to show theparts normally .a enclosed. The door appearsiin Fig."1'in mid 4 l position,l movableto the right'toclose and to the left to-op'en. A gap nut 71is provided with wheels 8 vfor movement 'corresponding yto the door movement uponsuitable ways 9.

The ways It will be appreciated that whereas onlyy one door-and V its operating"'mechanism` are f shown, ,in an actual'installation, embodying .arrow of fcells, a number' ofv doors will be found. Thus the shown ga nut '-may be of a number of gagna s, one lfor each 1 door, all mounted upon a pull bar 10 as indicated, whereby each gap nut may be given reciprocal movement corresponding to that of which its door is capable. The door l is associable with its gap nut 7 to be actuated thereby, bya latch 'bolt 11 'vertically slidable in a bracket 12 carried by the door hanger 2,

`the lower .extremity of .the latch -bolt being 'the plane of movement of a notchlB provided on the upper faceof the. gap nut.

The bolt 11 is supported by a wedge bar 14 through a roller 15 running on the wedge bar. The wedge bar is adjustable with parallel motion to adjust ythe elevation of the latch bolt 11. For this purpose one end yof the wedge bar is supported on a roller16 :carried by a bracket 17, and provided with a cam 18; and the other end of the wedge bar is connected with the crank-'end of a link 19, the opposite end of which link is secured by a bracket `20. By this means, lreferring to the showing of Fig. 1, a movement to the right of the wedge bar will cause its elevation and fhence that of the latch bolt 11, regardless ofthe position of the door 1. The `specific means by which -the wedge bar is shifted Ileft and right and thus up and down lis immaterial, but as shown comprises linkage including pull rod 21, bell crank 22, link 23, lever 24 and :rod 25.

By such control means the latch bolt may be caused to assume any ofits three principal elevations: lowermost, in which it will drop into the :notch Y13 ofthe gap nut 'to be positively engaged for actuation in either left or right direction; uppermost, in which `the gap nut is cleared entirely; and intervmediate., in which fthe gap nut will engage the latch bolt to close vthe -doorbut not open it. Fig. 1 shows the latch bolt in lower-most position.

bar is provided with a notch -:29 located to .engage the dog 11a when the door is in full open position and fthe bolt 11 is `raised vto :clear .the gap nut 7. Similarly thelock bar '.27 extends towards door-.closed position to engage a'projection associated withthe bolt, `to -lock ythe door 'in closed position while the gap nut 4is moved therefrom.

What has thus far been described is not new inthe art. It will be noticed, however,

that lower-ing of -"the latch bolt is notpositive, ibut effected only by gravity. Thus it has been found when the door is locked by on 'the door in the directionrof its :movement that the latch bolt will be Aretained vin elevated position so that the gap nut may be moved without causing .the intended corresponding door movement; whereupon release of this pressure allows the latch bolt to drop clear of the lock bar, leaving the door free, and this without the knowledge of the rightful operator positioned at the end of the vrow of cells.

As stated it is the object of this invention to Vprevent such a possibility. To this :end =`a bell crank 30 is mounted -on the pin '31l vby which the crank 'end of the link 19 has its connection with the wedge bar 14. This bell crank has the armfindicated engaging the pin 532 by which the llink 19 is mounted on-the bracket 20; so that the `bell-crank isv caused to yfollow motions of the link. Loosely mounted von the bell crank lby means of the pin -33 is a vertical lever T84 extending above the wedge bar S14 'and below `the bell crank 30 as indicated. Obviously the lever 34 may vhave uzp and down Iparalilel motion as the bell .crank f3() moves about the pin 32, and the lever may also have pivotal motion about the pin .33.

The upper extremity :of ithe lever hasconnection, as by a chain35 running over sheave 36 carried by the bracket 20, with the near and free extremity of the lock bar 26. Upon the lower extremity of the lever `134 -is secured a housing 37 having :a vertical slot 38 in which a trip 39 -is slidable, with move-l ment limited by engagement of 'the pin '40 carried by the trip 39 and extending into the opening 41 in the housing 37.

Secured upon the corresponding end of the gap nut -7 is a dog 42 into the path fof movement of which :the trip B9 projects when the wedgebar 14 is lin Iits lowermost position which is las indicated Fig. I3 in which .the gap'nut 7 is at its left-hand or -door-open extreme position, the vtrip 139 'being chamferred-as indicated to allow the dog Vto ride therepastto arrive at the shown position.

Suppose now the parts as indicated, 'the wedge bar flowered to allow the latch bolt to drop to engage the gap nut, but'the latch bolt actually maintained raised, engaged by the lock bar, by unauthorized pressure upon 'the door. As the -gap -nut moves to lthe right, `Vthrough engagement of the dog 42 with the trip '89, a -counterclockwise motion vi's imparted tothe lever 34, which through the chai-n 35 vraises the lock bar -26 above `the upper limit of latch bolt movement; which positively frees the latch bolt 'from the lock bar insuring lowering of the .latch bolt 'b gravity in time 'to `engage the gap nu"t," thati`kl"l is, before the gap nut notch 13 passes'the and thus insure engagement of the latch bolt with the gap nut.

latch bolt.

Assuming now the wedge bar 14 raised to free the latch bolt from the gap nut, the bell crank 30 moves clockwise about the bolt 32 to raise the lever 34 bodily, lower the free end of the lock bar 26 and raise the vtripy 39 clear of the dog 42. Thus locking engagement of the latch bolt with the lock bar is insured, and at the same time return movement to the right of the gap nut 7 without affecting the lever 34 and thus the lock bar, is permitted.

While this invention is actually shown applied to the lock bar 26 only it will be evident that it could as well be applied to the lother lock bar 27 by which the door is maintained in closed position. It is more importa-nt of course to insure closing of the door by the gap nut when intended, than it is to insure opening of the door; wherefore application of the invention to the dooropen lock bar has been chosen for illustration.

What we claim is:

1. In an apparatus of the class described and including a sliding door, means for moving the same between open and closed positions and including a gap nut movablefbetween corresponding positions and operatorcontrolled means for associating the door with said gap nut to cause the door to follow the gap nut movements, a lock bar for securing the door in one of said positions when the door is released from said gap nut, and means adapted when the door is secured by said lock bar and the gap nut is in its corresponding position, to cause releasing movement of said lock bar upon movement of the gap nut from its said position.

2. In an apparatus of the class described and including a sliding door, means for moving the same between open and closed positions and including a gap nut movable between corresponding posit-ions, a latch bolt arranged to be lowered to associate said door with said gap nut to cause the door to follow gap nut movements and operator-operated means for supporting said latch bolt in adjusted positions to control said association, a lock bar engageable with said latch bolt when the door is in one of said positions and the latch bolt is elevated above said gap nut, whereby the door may remain locked in said position while the gap nut is not in corresponding position, and cooperative means associated with said lock bar and with said gap nut respectively and adapted to act as said gap nut moves from said corresponding position and when said operator-operated means is positioned to allow lowering of the latch bolt upon the gap nut, to cause movement of the lock bar to release the latch bolt In testimony whereof we hereby aix our.

signatures.

ARTHUR E. SHANK. GOTTFRIED FISLER. JOHN M. LINDEN.

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