US289542A

US289542A - keinqs

Info

Publication number: US289542A
Authority: US
Publication date: 1883-12-04
Anticipated expiration: 1900-12-04

Description

ULOGK.: l

Patented Dec. 4, 1188@ 1 emma-ms PATENT @tripa rnnnmonlrqirmncs, "or onicneo, ILLINOIS, Assienon or onu-HALF "frowvILLmM n. FLETCHER, or sAMn PLAGE.

LocK.

SPECIFICATION forming part of LettersPatent No. 289,542, dated December 4c, 1883.

Appiiduon filed May 22,1583. (Model.)

tures in the construction and arrangement of the parts, as willbe hereinafter more fully set forth in detail in the specieation, and pointed out in the claim. i i Figure lis a side elevation, the cap-plate being removed to show the interiorof the lock, the door and jamb-post being in section. y Fig. 2 is a horizontal transverse section inthe plane 2 2, Fig. l; Fig. 3, d a vertical section in the plane 3 3, Fig. l, looking in the direction vindicated by the arrows; Fig. 4, a face view of the keeper or striking plate. Referring to the drawings, A-represents the door; A, the case or box inclosing and retaining the lock mechanism; A2,the keeper or striking plate, and As the face-plate, attached to and forming a part of the case A. The recess A4, for the reception of the lock, is cut out from the front edge of the door, and is secured in place by the face-plate A3, attached to the door by the screws A5 A5, and to the lock-case by the screws A A, as shown in Fig. l of the drawings. d rlhe keeper A? is `provided with the usual apertures, and thejamb-post B with recesses corresponding thereto, for the reception of the latch-bolt B and the locking-bolt C. The inner `end of the latch-bolt passes through an aperture in the outer end of the rectangular sliding frame a, and is secured in relation thereto byl the pin a. By this arrangement the latch-bolt is adapted to move simultaneously with the frame c, or may be forced back independentof the frame a. The frame a is adapted to have an endwise adjustment, and is forcedbackward by the longitudi- Y nal movement of thespindle B2, providedwith the trianguiarprojection B3, the bearing-sur- 5o facelof which is slightly curved, and by frici tionalicontact of the same with the beveled lug a2, `formed integral with the frame a, the latchbolt is released from engagement with the keep er. ,The lug a2 projects laterally from and a little beyond the plane of the frame a, through which the spindle B? passes. This spindle is not susceptible of a rotary movement, but only an endwise adjustment. The latch-bolt is drawn back .bypulling on the handle B4, or by pushing in on `the knob B5, as the case may be. The latch-bolt is automatically thrown out by i means of the spring a3, coiled around the post :the cut-away part of the bolt, and to bring it on a level with the head of thebolt. The back parts ofthe series of tumblers are providedwlth` 7 5 `the irregular slots C2, the transverse parts of which are slightly curved to allow the tumblers to have a corresponding lateral movement,

while the rectangular parts of the slots extending backward provide for alongitudinal move- So ment of the bolt independent of the tumblers. The ends ofthe tuinblers are retained in proper relation to the locking-bolt by means of the rectangularpost C, attached to the bolt. The lower edges of these parts of the tumblers are `8 5 cut away in different curved planes, so that a key of a particular shape is required in order l* to bring the tumblers` into the right position for moving the bolt. d

. Each of the series of tumblers has an inde- 9o pendent lateral movement relative to the others. The opposite ends of the series of tumblers are rounded and perforatedto engage with the pivot-post Gt, which is rigidly attached to the back of the lock-case, and projects through g 5 the elongated slot C5 in the locking-bolt, so as to permit of a longitudinal adjustment of the same. Each tumbler is provided with a spring,

C, arranged in the same plane therewith, one

end of said spring being secured to the tum- Ioo 1 bler, while the opposite end has a bearing against and is retained in place by the post D. These springs serve to automatically throw the back ends of the tumblers down, so that the offset made by the widest part of the slot C2 engages with the post C3, and thereby prevents all possibility of the bolt being forced out of the locking position, (shown in Fig. 1,) except by the use of the proper key, thus avoiding` vthe danger of having the bolt sprung back by inserting an instrument into the door-jamb. The bolt G cannot be thrown into a locking position by means of a key, but is automatically forced out into engagement with the keeper by means of the spring Cl, coiled around the post O8. The inner end of the trigger D is secured to the post D2, and is adapted to have a pivotal movement from this point. The opposite end of the trigger projects a little beyond the faceplate, attaching the lock to the door, and engages with the beveled slot D3 in the keeperplate. (Shown in Fig. 4 of the drawings.) The upper 'side of the trigger is provided with the upward-projecting post d, which is adapted to engage with a corresponding aperture, d', in the under side of the head of the locking-bolt, which serves to retain the bolt in an unlocked position against the pressure of the spring C7 when the door to which the lock is attached is open. Now, in closing the door, the outer projecting end of the trigger is forced downward by reason of coming in contact with the beveled line d2 on the keeper, (shown in Fig. 4 of the drawings,) which movement has the effect of releasing the locking-post d from engagement with the under side of the lockingbolt, which is then thrown out into'a locking position by the spring C7. The trigger is automatically thrown into engagement with the locking-bolt by means of the spring b4. Above the locking-bolt is placed the lever-catch D", which has an axial bearing near its longitudinal center on the post D. Thefront end of face-plate, through an elongated aperture in tl i c 5]@ j same, which admits of this end of the catch ing thrown up or down, as may be required, and imparts a corresponding movement to the opposite or inner end. rIhe object of this levercatch is to engage with the locking-bolt and prevent the same from being thrown into a locking position when the door is closed and the trigger thrown out of engagement withthe locking-bolt. This is done by tipping up the outer end of the catch, which throws down the inner end and engages it with the notch d5 in the upper edge of the locking-bolt, which securely holds the bolt in an unlocked position and permits of the door being closed without locking the same. By simply throwing the outer end of the catch D* down the opposite end is released from contact with the lockingbolt, and the operation of automatically locking the door by closing the same is the ysame as before described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with the locking-bolt C, having the aperture c?, of the spring C7, the trigger D', provided with the upward-projecting post d, the post D2, the spring b4, and ,the keeper A2, provided with beveled slot D3, whereby said bolt is automatically thrown into a locking position by the closing of the door, 8o substantially as described.

FREDRICH P. KRINGS.

Witnesses: