US947641A - Double-door lock. - Google Patents

Description

F, LAHR. DOUBLE DOOR LOCK. APPLIUATION FILED Dno.1o,19os.

Patented' Jan@ 25, 1910.

3 SHEETS-SHEET l.

F. LAHR.

DOUBLE DOOBl LOGK. APrLIoATIoN FILED DBo.1o,19os.

'Patented M1125, 1910.

3 SHEETS-SHEET 2.

F LAHR DOUBLE Do LOCK.

APPLICATION FILED DEO. 10,1908.

Patented m1251910.

a MEETS-SHEET a.

' sanear..-

sTATns 'PATNT oFFIoE.

FRANK LAHJR., OF WADSWOR-TH, OHIO.

:DOUBLE-DOOR LUCK.

i Specification of Letters Patent. Patented Jan.. 25, 1910.

Application filed December 10, 1908. Serial No. 468,846. j

To all whomn/t myvconcem:

f. Be it known that I, FRANK LAHR, a citizen of the United States, residing at `Wads worth, in the county of Medina and State of hiO, have invented certain new and useful Improvements in Double-Door Locks; and l do declare the following to be a full, clear,

and exact description of theY invention, such j to improvements in la locking bolt is operated to fasten two doors together and to simultaneously operate fastening bolts at the upper and lower ends of one of the doors.

A further ,object is to provide means whereby the bolt operating mechanism may be locked and unlocked fromthe outside of the door.

invention consists'of-certain novel features of construction, combination'and .arrangement of parts, as will be more fully described and particularly pointed out inthe appended claims. A Q

lln the accompanying drawings, Figurel i is a side elevation of the inner ,side of a portion of the two doors showing the arrangement of-the locking bolts on the inner side of one of said doors; Fig. 2 is an enlarged vertical cross sectional view through one of the doors and the locking mechanism thereon taken on a line with the operating shaft and handle; Fig. 3 is a horizontal sectional view through the same parts and a portion of theadjacent door; FigQt is a vertical longitudinal sectional view through the casing of the top and bottom bolt operating mechanism on the inside of one ofthe doors; Fig. 5f

is a vertical longitudinal sectional view Jthrough one of the doors and the mortise case showing the bolt which locks the doors together and the means for operating the same; Fig. 6 is a vertical cross sectional View, showing the arrangement of the keyoperated clutch mechanism by means of which lthe bolt operating mechanism is locked and unlocked and connected with the handle and showing the clutch mechanism in a locking position; Fig. 7 is a similar view of the same partsv showing the clutch mechanism in position to connect the handle with the bolt operatingmechanism; and Fig. 8 is a -vertical sectional View through the lower portion of one of the doors, the threshold `and sill and the lower bolt and casing.

. locking bolt 5 for fastening the two doors together and also containing means for operatingsaid bolt. Arranged through the door and the mortise case is a bolt operatingshaft 6 on which within the mortise case is Xedly mounted a bolt-operating lever 7 said lever having' a curved or rounded outer end 8 which lis adapted to be engaged with a notch 9 in the bolt 5 as clear y shown in Fig. 5 oi` the drawings. In the inner side of the door 1 is arranged a casing 10 in which is revolubly1 mounted a bolt operating mechanism comprising a hub 12 on which is formed opposite radially projecting bolt voperating levers 13, the ends of which are curved or rounded and are adapted to engage the slidably mounted operating bars 14 and 15 arranged in said casing 10. The upper end oi the bar 14 projects through a guide bearing 16 on the upper side of the casing 10 and has detachably connected thereto an operating rod 17, the outer end of which is detachably connected with an npi per fastening bolt 18 which 1s slidably mounted in a suitable casing 19 secured to the inner side of the door adjacent to its npper edge. The bolt 18 is adapted to be projected into and retracted from a suitable keeper 2O arranged in the upper cross bar of the door frame.

'The bar 15 projects through a suitable guide bearing 21 on the lower edge of the casing '10 and has detachably connected thereto an operating rod 22, the lower endl of which is connected to a lower fastening bolt Q3 which is slidably mounted in a suitable casing 24 secured to the side of the door jacent to its lower edge. 'lhe bolt 231s adapted to be operated to engage a keeper 25 arranged in the threshold and sill ofthe door-way. lln order that the bolts 18 and 23 may reciprocate freely in their respective casing and keepers, l preferably provide 1n the outer portions of the casings 19 and 24 fit . hollow body portion in which is adapted to be placed lead in suiiicient quantity to equal- 'ize'ythe weight of the upper and lower bolts v and their connections.

A The hub 12 of the bolt operating mechanism lprojects through the opposite sides. of the casing 10 and on the outer projecting end'of the'hub is arranged a disk 28. and connected to said outer end of the hub is an inner operating handle 29, said handle -being preferably secured to the end of the 'hub by a cap screw 3Q which passes through the inner end of the'handle and a screw threaded aperture in the 'outer end of the hub, as clearly shown in Fig. 3 of the drawings. f

On the outer side ofthe door 1 is-arranged a suit-able casing 31, in the inner end of which is screwed a Stationary member of a three member clutch. mechanism, said clutch member comprising a circular plate'or disk 32 having on its` inner side an apertured boss 33E which is set into the outer side of the door, as shown. The disk or plate 32 is prov vided on its lower edge with an outwardly pro ecting segmental flange 34 which 'exten s approximately one-half way around the lower portion of theplate, The intermediate member ofthe clutch device comprises a plate or disk 35 having on its'fupper edgeja right-angular outwardly projecting segmental flange 36 said flange extending approximately one-half way around the-upper portion of the plate-35, as shown. O n the inner side of the plate or disk 35 1s formed a rearwardly projecting hub 37 which projects through and has a bearing gaged, the opposite end of said shaft be-l `in the apertured boss 33 of the plate 32. In the hub 37 is formed a squared recess wlth which the outer end of the shaft 6 is ening engaged with; a squared recess in the inner end of the hub 1 2 of the bolt operating levers 13. In the flange 36 of the plate 35 is formed a centrally disposed notch 38 while in the flange 34 of the plate 32 1s formed-a centrally disposed notc'h 39.

. Adapted to be engaged with the plate 35 of the intermediate clutch `member is a disk" 40 of the outer clutch member. The disk 40 is provided on its inner side with a centering stud .41j which is en aged with a centrally disposed-recess 42 ormed in the face' of the disk 35 of the intermediate clutch member. To the Aouter side of the disk 40 is secured a tubular operating shank 43 preferably by screws'as 40%. -This shank4 43 pro- `jects' through and works in a tubular extension 44of the casing 31. Slidably mounted between guide lugs 45 on the outer face of the disk 40 is a lockin bar 46, said bar being of slightly greater ength than the diameter of the disk 40, whereby one end or the other of the bar projects beyond the edge of `the disk 40 and engages either the notch 38 in the flange 36 of the intermediate Vclutch member or the notch 39 in the flange 34 of the stationaryclutch member. When the locking bolt 46 is engaged with the notch 39 of the stationary member of the clutch, the outerr clutch member is` locked' against rotation. When the opposite end ofthe bar 46 is engaged with the notch 38 in th fiange 36 of the intermediate member of the clutchmechanism, the movable parts of the clutch and the shaft 6 may be rotated a distance corresponding with the space between the ends of the flanges`34 and 36. By this movement of the clutch 'members and the operating shaft 6, the bolt operating levers 'on said shaft are actuated to simultaneously project or retract the bolts of the door.

In the end of the extension`43 of the outer clutch member is arranged the outside door handle 48, said handle being operatively connected to 4the extension 43`.by a capbolt` 49 which has a screw threaded engagement Vwith the tubular extension, as shown.

The locking bolt 46. is reciprocated between the pairs of guide lugs 45 on the diskl v4'() bymeansof a key actuated operating mechanism, comprising a cylindrical plu 50 which is mounted to turn in a cylindrica casing lforming a part of lthe casing 31 onr the outerside of the' door. The plug 50 is provided on its inner end with an eccentrcal-ly arrangedcrank pin 52 to which is connected the lower end `of a 'pitman rod 53, the upper end of which is connected to a stud 54 projecting froni the outer side of .the 'bolt' 46 adjacent to its upper end as clearly shown in Figs. 6 and 7 of the drawings.

Thev plug 50 is provided witha series ofI oppsitely disposed lockingpins 55-which are in sockets 56 formed in the opposite sides of the plug, as shown. The lower endsof the sockets 56 communicate with, a keyway 57 formed in the plug whereby'when. a `key is rinserted into said key-way, the edges' of the key will engage the lower ends ofthe pins *55 and'project the latter outwardly so that their outer ends will be flush with the'` i.'

outer surface of the plug. In the upper side of the casing 51 is arrangedaseries of locking pins 58 which are slidably mounted in passages provided therefor in the casing and are adapted to drop into the outer ends of the sockets 56 when the key is removed from lthe plug thereby locking the plug against rotation in the casing. By this conturned by the key. The, plug is provided on its inner side with a segmental rib 59 or other suitable ball'lingvprojection which is adapted to be engaged by a suitable recess 60iformed in the key whereby none but the proper key can be engaged with the plug to operate the same.

In the operation of the lock, when the plug is in position wherein the locking bar 46 is in engagementwith the notch in the flange of the'stationary clutch member, the outer portion of the clutch connection be tween the outside door handle and the operating shaft is locked and cannotbe operated .bythe outside handle.

'lhe shaft, however, may be `operated at any timeby the inside door handle which connects with the shaft.

through the hub of the bolt operating le-` vers 13. .In order 'to enable the operating shaft to be turned by the handle on the out side of the door, it is necessary to apply the key to the plug to turn the latter into the position to retract the bolt 46 from the locking notch 39 in the flange of the stationary clutch member to which the handle is connected with 'the intermediate member and' through said intermediate member with the operating'shaft thus enabling -said'shaft to be turned by the outer handle to operate the bolt actuating levers on the sha-ft and thereby retract or project the bolts to lock or unylock the door.

i From the foregoing description taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood with* out requiring a more extended explanation. Various changes 1n the form, proportion and the minor details of construction may be resorted to without departing from the y I claim asnew and desire to secure by Letyters-Patent is: i

l. In a double door lock, a series of lockl eratively connected to said shaft, an outerclutch member operatively connected to said handle, and means for effecting a locking engagement between said outer and intermediate clutch members. Y 4

2. In a double door lock, a series of locking bolts, an operating shaft, bolt operating levers arranged on said shaft, an inner door handle operatively connected to said shaft, an outer door handle, a clutch connection between said outer door handle and the outer end of said shaft-,said clutch connec tion comprising an inner stationary clutch member, an intermediate clutch member operatively connected to said shaft, an` outer clutch member operatively connected to said handle, a locking mechanism between said outer and intermediate clutch members, and key-actuated means for operating said locking mechanism. t

3. In a double doei' lock, a series of fastening bolts, a bolt' actuating mechanism, an inner door handle operatively connected thereto, an outer door handle, a clutch connection between said outer door handle and said operating mechanism, said clutch connection comprising an inner stationary clutch member, an intermediate movable clutch member operatively connected with said bolt operating mechanism` an outer clutch member operatively connected with Said outer handle, a locking bolt carried by said outer clutch member, a key plug, means whereby said plug is connected with said bolt to reciprocate the latter and thereby lock said outer clutch member into engagement with the intermediate clutch member. and means whereby said key plug is locked against operation.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRANK LAHR VVitnesses:

ERWIN L. METTING, S. IIL IIocKE-NSMI'rH.

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