US2169944A - Door lock - Google Patents

Description

15, 1939- J. R. ELLIOTT ET AL v DOOR LOCK Filed April 12, 1934 4 Sheets-Sheetl Inventors [1 I/flo C, C. flaw Jory J. R. E LLIOfT El AL ,169,944

- Aug. 15, 1939.

DOOR LOCK Filed April 12, 1934 4 sheets-sheet 2 i lu Inventors; 17:12. E///'0# G. C. Hug/mm J. R. ELLIOTT ET AL DOOR Lock Filed April 12, 1934 4 Sheets-Sheet 3 6. G. Haida/7 Aug. 15, 1939. J. R."ELLIOTT ET AL DOOR LOCK 'Filed April 12, 1934 4 Sheets-Sheet 4 lnvenlor:

JTZZEM I (I. HAM/L900 fimm izm f1 uomey Patented Aug. 15, 1939 T OFFIE DOOR LOCK John It. Elliott and Charles 0. Hudson, Atlanta, Ga.

Application April 12, 1934, Serial No. 720,335

12 Claims.

. This invention relates to door locks and has as its object the provision of an improved and efficient door lock whereby the door may be locked or released from either side thereof, and also 5 to be opened or closed from either side thereof.

, The invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

10 I Figure 1 is an enlarged elevational View of the lock embodying the features of, the present invention.

Figure 2 is an enlarged sectional view through the door illustrating the application of the in vention with the parts in a door locking position. Figure 3 is a view similar to Figure 2 with the parts in a released position.

, Figure 4 is an enlarged elevational view showing the mounting for the bolt and other features hereinafter more fully referred to.

Figure 5 is a sectional view taken substantially on the line 5-5 of Figure 1.

Figure 6 is a longitudinal sectional view through a portion of the locking bolt.

Figure 7 is a perspective view of the lock bolt and Figure 8 is a perspective view of a retaining dog.

Referring to the drawings by reference numerals l indicates generally a portion of a door the front face of which is indicated by the reference numeral H, and the rear face by the reference numeral H2. The door has a portion thereof hollowed out to accommodate the lock. Suitably secured to the cloor at the front face, H thereof is a plate I3 provided with a recess E4 to accommodate the handle 85. In accordance with the invention the handle 95 is secured at one end to a cylinder l6 that is movable through a suitable opening provided therefor in the plate [3. The barrel I6 is suitably provided to receive a suitable key for releasing the bolt ll of the lock. Bolt I! of the lock operates within a tube l8 rotatably supported 'at one end as indicated generally at l9, and as best shown in Figure 6. The barrel I6 is normally urged outwardly to the position shown in Figure 3 through the medium of a coil spring 20 housed within the tube l3.

To look the barrel It in the position shown in 9 Figure 2 there is provided a pivotally mounted dogZl that is adapted to engage in a notch 22 provided in that end of the bolt I? which, when the cylinder l6 and handle 15 are in the position shown in Figure 2 projects beyond the rotatably mounted end of the tube I 8 and through an opening provided in a suitable partition plate 23 to be engaged by the dog 2! in a manner clearly shown in Figure 1. The dog 2| is pivotally mounted to the plate 23 at the side thereof opposite to the tube 3.

There is also provided a latch bolt 24, the same having a head which operates through a suitable opening provided in a flange on plate 23 as suggested in Figure 4. The bolt 24 is guided in its movement through the medium of a pin and slot means 25. The bolt 24 is normally urged to a projected position through the medium of a suitable coil spring 26 one end of which is suitably anchored to the plate 23, and the other end of which bears against a lug 27' projecting laterally from the latch bolt 24.

Connected with the inner end of the barrel I6 through the medium of a clamp 29 is one end of a flexible element or chain 21 that is trained over a pulley 28 suitably mounted on the plate 23, the other end of the chain 27 being connected with a pin 30 that operates in a slot 3! provided in an extension of plate 23. The pin 39 serves to connect said last named end of the chain 2'! with one end of a curved lever 32, the other end of which lever is pivotally connected with a member 33 that is rotatably mounted upon a spindle 34. The spindle 34 extends through and is journalled in a bearing 35 provided on a plate 36, and the member 33 is adapted to rotate about the spindle as an axis. On one end of the spindle there is fixed a knob 37 while on a relatively opposite end of the spindle there is fixed an arm 39 that is connected through the medium of a pin 40 with one end of a link 42. The other end of the link 42 is provided with a slot 43 in which operates a headed stud or pin 44 carried by the latch bolt 24 at the end of the bolt opposite to the head thereof. Pivoted to the bolt 24 through the medium of the stud 44 is one end of a trip link 45. The link 45 has a free end formed as at46 to straddle the angular end 2 Id of the pivoted dog 2|. Also secured to the end 2la' of the dog 2! is one end of a suitably anchored spring 41 that normally urges the dog 2| to rotate in a direction to engage the notch 22 in the lock bolt l'l, all of which will be clear from a study of Figures 1, 5 and 8.

As also suggested in Figures 1 and 5, the pin 4D that connects the arm 39 with the link 42 operates in an arcuate slot 4| provided in the upper portion of the member 33 so that when the arm 39 is rotated far enough to engage the pin 46 with one end of the slot 4i movement of said arm 39 will be transmitted to the member 33 as and for the purpose hereinafter made manifest.

There is also provided a suitable spring 38 anchored at one end to the plate 36 and connected at an opposite end to the end of the link 32 pivotally connected with the member 33, the spring 38 acting in opposition to the spring 2|! to hold the chain 21 taut.

The operation and utility of the device will be apparent from the following:

With the parts in the position shown in Figure 2 it will be apparent that the bolt is in projected position to secure the door closed and that to retract the bolt from the outside it will first be necessary to have the handle I5 in a position externally of the pocket M as for example in the position shown in Figure 3. To accomplish this, the key is inserted in the lock in the usual man ner and turned for rotating the lock bolt H. The turning of the bolt I! in this manner will move the notch 22 thereof out of engagement with the dog 2| with the result that the barrel l6 under action of spring will be projected together with the handle IE to the position shown in Figure 3. Movement of the barrel I6 to the projected position will through the medium of the chain 21 draw the pin from the position shown in Figure 1 and also Figure 4 toward the right hand end of the slot 3| in Figure 4. This in turn will cause the member 33 to rotate in a clockwise direction as viewed in Figure 1, and the movement of the member 33, through the medium of the pin and slot connection 40, 4| will be relative to the arm 39. The handle I5 is then rotated in the proper direction for retracting, through the medium of the co-acting parts 49, and 50, the bolt 24, so that the door is now unlocked and can be easily swung open, as will be presently manifested.

Obviously, by pushing inwardly on the handle IE to move the same from the position shown in Figure 3 to the position shown in Figure 2 the parts will return to their normal position permitting the bolt 24 to be projected under action of spring 26.

If it is desired to move the parts from the position shown in Figure 3 to the position shown in Figure 2 from the inside of the automobile, the operator rotates the knob 31 (assuming the parts are in the projected position, that is in the position called for by Figure 3), in a counterclockwise direction. This will result in a pull toward the right in Figure 1 on the link 32. This pull on the link 32 will draw the chain 21 inwardly or to the right in Figure 3 which in turn will cause the barrel I6 and associated parts to move inwardly from the position shown in Figure 3 to the position shown in Figure 2; and when the bolt I1 is projected beyond the plate 23 dog 2| under action of spring 41 will swing into engagement with the notch 22 of the bolt thus securing the parts in their inwardly or retracted position.

Now, with the parts in the position shown, as for example, in Figure 2, the bolt 24 may be retracted by one inside of the automobile in the following manner:

The knob 31 is rotated, (as viewed from Figure 1) in a clockwise direction which will cause the link 42 to move in a corresponding direction, and this movement of the link will of coursein turn cause the bolt 24 to be retracted. Due to the loose connection between the ends 46 and 2|a of the link 45 and dog 2| respectively the retraction of the bolt in this manner may be effected without affecting the lock mechanism, that is, without releasing bolt On the other hand, when it is desired to unlock the door from the inside of the automobile and to permit the parts to be projected from the position shown in Figure 2 to the position shown in Figure 3, the knob 31 is rotated in a clockwise direction sufiiciently far enough that link 45 will so engage the end 2|a of the dog 2| as to cause the latter to rotate in a counter-clockwise direction to free the lock boltll. With the lock bolt freed in this manner spring 20 will act on the cylinder It to project the latter and associated parts to the position shown in Figure 3.

From the above it will be seen that the bolt 24 may be retracted by one inside of the automobile with or without afiecting the lock mechanism as may be found desirable.

At the inner or rotatably mounted end thereof the tube I8 is provided with a lug 49 as will be clear from a study of Figures 4 and 6. The bolt 24 is also provided with an extension 50 that is arranged in the path of the lug 49. It will also be understood that the bore of the barrel l6 that receives the tube I8 is squared, and that the tube l8 with the exception of the rotatably mounted end thereof is also square in cross section. Thus a turning of the barrel It will cause the member l8 to turn therewith. Accordingly, with the parts in the position shown in Figure 3, by rotating the handle l5 the member |8 will be rotated so that the lug 49 thereof will engage the extension 50 of the bolt in a manner to cause a retraction of the bolt 24 against the action of spring 26 thus permitting the door to be easily opened by one on the outside by a turning of the handle l5 when the latter is projected outwardly from its pocket or recess |4.

Having thus described our invention, what we claim as new is:

1. A look for doors and the like comprising a slidably mounted bolt, inner and outer telescopic members nonrotatively connected together, interengaging means on one of said members and the bolt for retracting the latter, an operating handle provided on the free end of the other of said telescopic members, a handle pivotally mounted at the inner side of the door, means for extending said telescopic members, and flexible means connecting said other of the telescopic members and the second named handle for telescoping said members.

2. A look for doors and the like comprising a slidably mounted bolt, inner and outer telescopic members nonrotatably connected together, interengaging means on one of said members and the bolt for retracting the latter, an operating handle provided on the free end of the other of said telescopic members, a handle pivotally mounted at the inner side of the door, means for extending said telescopic members, and flexible means connecting said other of the telescopic members and the second named handle for telescoping said members, a key operated bolt carried by said other telescopic member and having a free end provided with a notch, a pivoted dog arranged to engage the notch in the bolt for securing the members in telescoped position, operative connection between the second named handle and the bolt for retracting the latter independently of the first named handle, and said connection also including a connection between the second named handle and the dog for releasing the key controlled bolt.

3. A look for doors of motor cars and the like comprising inner and outer telescopic members non-rotatably connected together, one of said members adapted to operatively engage a lock bolt to retract it, the other having an operating handle, a spring for extending said members, means at one side of the lock operatively connected with the outer telescopic member for telescoping said members, including a pivotally mounted handle, a flexible member connected at one end with said outer telescopic member, and

a link connecting said flexible member with the handle.

4. In a lock for the doors of motor cars and the like, inner and outer telescopic members nonrotatably connected together, one of said, members adapted to operatively engage a lock bolt to retract it, the other having an operating handle, a spring for extending said members, means engaged with said members to holdthem in telescopic position, means for disengaging said engaging means whereby the spring returns the members to extended position, and means for telescoping said members against the action of said spring including a flexible element connected at one end with the handle equipped telescopic member, guide means for said flexible member, and operating means connected with the flexible member for drawing the outertelescopic member inwardly into telescoping position relative to the inner telescopic member, said operating means being accessible from the side of the lock remote from the handle.

5. A look for doors of motor cars and the like including a spring projected bolt, inner and outer telescopic members non-rotatably connected together, one of said members adapted to engage the bolt to retract it, and the other having an operating handle, a spring for extending said members, means engaging said members to hold them in telescoped position, said means including a key operated bolt carried by the handle equipped telescopic member, said key operated bolt being provided with a notch adjacent the free end thereof, a pivoted dog arranged to engage the notch to hold the members in telescoped position, and said key operated bolt being turnable by a key to disengage the said bolt and dog whereby the spring returns the members to extended position.

6. In a lock for doors of motor cars, and the like, a spring projected bolt, inner and outer telescopic members non-rotatably connected together, one of said members adapted to engage the bolt to retract it, the other member having an operating handle, a spring for extending said members, means for engaging said members to hold them in telescoped position including a notched member carried by the outer telescopic member and a pivoted dog to engage the notch of said notched member to hold the telescopic members in telescoped position, and an operating connection between the bolt and said dog for moving the latter out of engagement with the notch whereby the spring returns the telescopic members to extended position.

7. A look for doors of motor cars and the like comprising a normally spring projected bolt, guide and supporting means for the bolt, means for retracting the bolt including inner and outer telescopic members non-rotatably connected together, one of said members adapted to operatively engage the bolt to retract it, the other I having an operating handle, means for extending said members, means for holding said members in telescoped position, handle means accessible from the side of the door remote from said inner and outer telescopic members, means for releasing said telescoping members from telescoped position incidental to a retraction of the bolt, and means operatively connecting the second named handle means with the outer telescopic member for moving said member into telescoped position.

8. A door lock having a latch bolt, an outer and an inner handle, said outer handle being adapted for movement axially into operative and inoperative position, spring means for urging said handle into operative position, said latch bolt being adapted for withdrawal by both handles, said inner handle being adapted when moved from a given point in one direction to release the outer handle from inoperative position to operative position and to withdraw the latch bolt, and when moved from the given point in the opposite direction to withdraw the outer handle from the operative to inoperative position,

9. A door lock having a latch bolt, an outer and an inner handle, said outer handle having a telescopic spindle and being adapted for movement into operative and inoperative position, a cam on the outer handle spindle engageable with the latch bolt, a bell crank connected to the inner handle, a slide bar connected to the latch bolt,

and a second slide bar connecting the bell crank u and the outer handle spindle, said bell crank being capable of selectively engaging each of the slide bars whereby a movement of the inner handle in one direction withdraws the latch bolt and a movement of said inner handle in the opposite direction telescopes the spindle and draws the outer handle into inoperative position.

19. In a lock mechanism for a door having a depression formed in one side face thereof, said lock mechanism comprising a handle operatively connected to the lock mechanism, said handle having a shank slidably projecting through an aperture in said door face to permit the handle to be moved between a projected position and a retracted position occupying said depression, a second handle mounted on the other side of the door for movement in opposite directions from a normal position, means connecting the second handle to the locking mechanism to effect operation of said mechanism by movement of the handle in one direction, and means for effecting movement of the first handle between said two positions controlled by movement of the second handle in the opposite direction.

11. In a lock mechanism for a door having a depression formed in one side face thereof, said lock mechanism comprising a handle operatively connected to the lock mechanism, said handle having a shank slidably projecting through an aperture in said door face to permit the handle to be moved between a projected position and a retracted position occupying said depression, spring means for projecting the handle, and means controlled from a remote point located out of axial alignment with the handle for retracting the handle into said depression and retaining it therein.

12. In a lock mechanism for a door having a depression formed in one side face thereof, said lock mechanism comprising a handle operativelt connected to the lock mechanism, said handle having a shank slidably projecting through an aperture in said door face to permit the handle to be moved between a projected position and a retracted position occupying said depression, spring means for projecting the handle, a second handle rotatably mounted on the other side of the door, and a link and lever system connecting said handles to cause rotation of said second handle to effect retraction of the first handle into the depression.

JOHN R. ELLIOTT. CHARLES C. HUDSON.

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