US2098012A - Lock and more particularly door lock for automobiles - Google Patents

Description

NOV. 2, 1937. 2,098,012

LOCK AND MORE PARTICULARLY DOOR LOOK FOR AUTOMOBILES M. PAPST Filed Sept. 8, 193:5

4 Sheets-Sheet 1 Fig.1- F2 Inventor:

Nov. 2,- 1937. M. PAPS+ LOCK AND MORE PARTICULARLY DOOR LOCK FOR AUTOMOBILES Filed Sept. 8, 1933 4 Sheets-Sheet 2 l m Y 8 as 27 as 4 a 2 24- G Inventor:

Nov.-2,- 1937. M. PAPS'T LOCK Ami MORE PARTICULARLY DOOR LOOK FOR AUTOMO B ILES Filed Sept. 8, 1 933 4 Sheets-Sheet 3' Invfifor: MAX PA'PST rrcnn :y

Nov. 2, 1937.

M. PAPST 2,098,012

LOCK AND-MORE PARTICULARLY DOOR LOOK FOR AUTOMOBILES 4 Sheets-Sheet 4 Filed Sept. 8, 1933 In ventor:

UNITED STATES PATENT OFFICE LOCK AND MORE PARTICULARLY noon LOCK ron AUTOMOBILES Max Papst, Paris, France Application September s, 1933, Serial No. 688,608 In Germany December 16, 1932 12 Claims. (Cl. 70-208) The present invention relates to looks and more Referring now to Figs. 1, 2 and 3, the lock in the particularly to door locks of automobiles. Its door frame I has a roll-back 2 which, when being main object is the provision of a lock, the handle turned, is able to operate the conventional door of which, when locked, is inaccessible to inadcatch (not shown). in a suitable manner. Rollvertently violent or surreptitious actions. Anback 2 has a square hole and encompasses the 5 other object of the invention is to provide means square shank 3 of the door handle. Shank 3 is by which the number of lock parts projecting axially movable within the roll-back 2 in a manfrom the door surface may be sensibly. reduced. ner that the handle may be pushed from its oper- The invention essentially consists in a door ative position (Fig. 1) towards the left side in handle having an inoperative and an operative the drawing into its inoperative position (Fig. 2) 10 position respectively close to or remote from the against the action of a spring 4. Means are prodoor surface, means for automatically moving the vided for automatically locking the handle in its handle into its operative position, meansfor autotwo end positions and other means for removing matically locking the handle in its two end posithe locking means from their locking position tions and means under the control of the operunder the control of an operator. For this pur- 15 ator for releasing the elements locking the pose, a cylinder lock 'lis provided in a cylindrical handle. hereof the handle shank 3. This cylinder lock 1 Further objects, features and advantages will hasa rotatable conventional plug 5 and is probe apparent from the following description and vided witha set of bores 30 in which detents fixnay appending drawings of examples embodying my slide. ,The detents are engaged bysprings 3| 20 invention. located in the bores 30. Diametrically opposite to In the drawings are: i the bores 30 another set of bores 32 with springs Fig. 1 a longitudinal section of a look as per 33 is also provided in the cylinder. Tumblers 36 my invention with a locking device housed within are slidably arranged in cylinder plug 5 in such a :5 the handle shank, in the operative position, manner that they may contact the detents 6 and Fig. 2 a cross section of the lock shown in slide into the bores 32 respectively against the Fig. 1, pressure of the springs 33. In Fig. 3 the lock is Fig. 3 a similar view to Fig. 1, the handle, howshown in its lockedposition in which the detents 'ever, in its inoperative position, protrude from the bores into the cylinder plug Figs. 4 and 5 longitudinal sections of a modifi- 5, the key being removed. If a key is inserted into 30 cation in the operative and in the inoperative the key slot 34 the tumblers move the respective position respectively, j detents 6 against the pressure of springs 3| out of Fig. 6 a cross section alongline a--b of Fig. 4, engagement with plug 5 whereupon the latter may Figs. 7 and 8 cross sections along line cd of be turned about an angle of 180 (Fig. 1). 1n

Fig. 4, and Figs. 9 and 10 crosssections along this position the key 8 may be retracted because line ej of Fig. 5, illustrating various positions the tumblers are able to enter the respective of the latch member which locks the handle of bores 32. A cylinder lock of the type described the lockas per Figs. 4 and 5, i in the foregoing is well known in the art and Figs. 11 and 12 longitudinal sections of another does not form part of my invention. At its left- 49 modificationin the operative and in the inoperhand end, the cy P 8 5 18 Provided w a ative position respectively, I bore in which a tongue-like latch bolt 9 is slidably Figs. 13 and 14 longitudinal sectionsof again mounted and urged Out y a sp "I So as another embodiment-of my invention, in the operto pass through a corresponding opening in shank ative, and inoperativeposition of the handle 're- 3 and to enter a recess I! oftheroll-back 2. The

-, spectively, j

' Figs. 15 and 16cross sections along line A--B ing over an arc of 180, and the opening in shank of Fig. 13 showing the handle locked against 3, through which latch bolt 9 is able to project, longitudinal displacement and. respectively, dishas the form of a peripheral slot of a correspondengaged, ing arc length. Starting from the bottom end I2 50 Fig. 17 a longitudinal section of a modi'fication of the groove II and atright angles to said recess 50 with the handle inoperative position, and ll, an inclined path l3 leads to another periph- Fig. 18 a cross section along line O- D of Fig. eral groove M in the roll-back, and a second-in- 17. clined p'a'th l5 connectsthe top ends of the grooves Throughout the drawings, like characters indl- II and H. Due tothe inclination of paths I3 care corresponding parts. v and I5 tongue 3 can readily enter path l3 from '55 recess I] is shaped as a peripheral grooveextendgroove II, and path I5 from groove I 4 while it is barred from leaving the grooves on the respective other paths.

To the outer surface of the door I, an escutcheon or handle housing I6 is fitted in which the handle rests when in its inoperative position per Fig. 3.

The device functions in the following manner: In its operative position of Fig. 1, the handle with its shank 3 can be turned to operate rollback 2 due to their square connection. The handle and shank cannot be pushed back into their inoperative position by an unauthorized person, since tongue 9 in groove II prevents an axial displacement of shank 3 relative to rollback 2. However, when key 8 is inserted into the slot 34 and turned, plug 5 takes the tongue 9 along in the direction of the arrow in Fig'. 2

until the tongue reaches the bottom I2 of groove II. At this point, the tongue is opposite the entrance of path I3. Now, the handle and the shank 3 may be pushed back, that is, to the left side of the drawing, against the action ,of spring 4 while tongue 9 compressing spring I9, travels along path I3. The axial displacement of the handle is blocked as soon as tongue 9 snaps into groove I4 (Fig. 3). In this position,

the handle is housed in the escutcheon, and,

therefore, inoperative and practically inaccessible to a surreptitious action. In order to bring the handle back into its operative position, the operator has to turn tongue 9 by means of plug 5 in the reverse direction. As soon as the tongue has reached the top end of groove I4 and the. entrance of path I5, spring 4 returns the handle and shank 3 to the position of Fig. 1.

Inv the modification illustrated in Figs. 4 to '10, the latch bolt for blocking the handle and shank against axial displacement is arranged so as to engage the shank from the outside. Fig. 4 shows handle 43 and shank M in their operative position, and Fig. 5 shows the same pushed back against the action of spring 4. In this inoperative position, the handle fits in a housing 2| arranged on the outersurface of the door I. Shank 4| and roll-back 42 are coupled for rotationby external and internal square surfaces respectively, and movable with relation to each other in axial direction.

A cylinder lock 31 of a type similar to lock 1 shown in Figs. 1 and 3-'is arranged within shank M of handle 43. Lock 31 differs from lock I inasmuch as it permits a rotation of only about Consequently the two sets of bores for the detents and tumblers respectively are arranged at right angles to each other rather than diametrically opposite each other as in the first mentioned embodiment, only one set of bores 38 being visible in Figs. 4 and 5. The cylinder plug 45 of lock 31 has an elongated shape and is provided with two arms or lugs 21 and 28 which correspond with the two end positions of the handle. These lugs are staggered with regard to each other for a distance equal to the thickness of one of the lugs (see Fig. 6), and adapted to move in corresponding recesses 25 and 26 of the handle shank 4|. A. latch bolt 23 is adapted to enter the. said recesses 25 and 2.6

respectively and is normally held therein by a;

spring 39 adapted to bear against pins 40.se-' cured to bolt 23. Spring 39 is fastened to a pin on which latch bolt '23 is pivotally mounted. Spring 39 and pins 40. are indicated only in Figs. 9 and I0 in order to avoid overcrowding vof the other-figures. Pin 24 is'fastened to a' plate 29 having a square hole corresponding to the square of shank 4I. Plate 29 is carried by shank 4| and adapted to be turned together with the latter wherrthe handle is in its operative position of Fig.4. The'manipulation of the device is the same as in the preceding example. In the position of Fig. 4, the latch bolt 23 engages recess 25 (Fig. '1) and prevents an axialdisplacement of the handle, which may be turned in order to operate the roll-back 42.

In order to bring the handle back to its inoperative position, the cylinder plug 45 must be turned in the direction of the arrow in Fig. '1. This causeslug 21 to engage latch bolt 23, and to swing it into the position of Fig. 8. Thus the shank M is freed for axial displacement against the action of spring 4 (Fig. 5) until latch bolt 23 is able to engage the recess 26 (Fig. 9), and to arrest the shank and the handle 43 embedded in the housing 2|. In order to remove the handle from this inoperative position, cylinder plug 45 is to be turned in the reverse direction. This causes lug 28 (Fig. 9) to remove latch bolt 23 from recess 26 whereafter spring 4 will push the handle 43 outward until latch bolt 23 arrests it again in the position of Fig. 4.

As will be apparent, the embodiments of my invention as per Figs. 1 to 10 have as a prerogative a roll-back of ample size for encompassing the parts movable within its hollow space. Such constructions are preferable if the whole door ready exists in the door and is to be subsequently equipped with thedevice as per my invention, other structures of the handle mechanism are more preferable, such as illustrated in Figs. 11 to 18. Of particular advantage is the structure shown in Figs. 11 and 12 which permits the whole mechanism as an entirety to be inserted into the door and rigidly connected with the standard roll-back.

In these figures, door I is provided with a door lock having a conventional or standard rollback 91 at its inner surface, and with a housing 86 at its outer surface into which housing the handle 98 fits in its inoperative position (Fig. 12) Housing 86 has a tubular extensionor stationary sleeve 81 protruding into a bore 88 of the door, coaxial with the roll-back 91. A projection 95 is secured to the bottom of the interior 9541 of the housing 86. by suitable means such as screw 22, and handle 98 has a recess 98. Housing 88 encompassing the handle 98 as Well as projection 95 rigidly connected with the door and engaging recess 96 are means for preventing rotation of the handle in its inoperative position, and it is obvious that either one suffices for this purpose,

and that the one is an auxiliary means of the,

other one if both are simultaneously provided.

Within the tubular extension 81, a sleeve 99 is rotatably mounted which has a bottom 82 and a square shaft projection 99a fitting into the roll-back 91 and adapted to be rigidly connected therewith. In order to facilitate the assembling of the mechanism it is of advantage if the dircumference of the projection 99a. is smaller than direction. In opposite portions of the wall of the sleeve 99, two apertures 89 and 89a respectively are arranged at an axial distance from each other corresponding with the end positions of the handle. A coil spring H3, insertedin the sleeve 99 bears against the shank 9801. with one of its ends and against an abutment formed by the sleeve bottom 82 with its other end.

Shank 98a. is hollow and has two recesses 84 and 84a diametrically opposite one another in its wall. A latch bolt H8 is inserted in the shank 98a so as to be capable of sliding at right angles to the shank axis and to pass through either one of the recesses 84 and 84a and to enter apertures 89 and 89a respectively, thus locking the shank 98a relative to sleeve 99 against axial displacement in the two end positions. Latch bolt H8 is so dimensioned that in an intermediate position, it does not protrude beyond the. circumference of the shank 98a. A cylinder lock H2 is inserted into the shank and a hair-pin spring 85 is secured to cylinder lock H2 in a manner that one arm of the spring bears against a projection 83 of the lock while the other free end extends through a hole IH of the latch bolt H8 and tends to displace this latch bolt towards the outside.

The square shaft 990. may have a bore 98 in order to permit the insertion of a tool into the interior of the mechanism in an emergency. For similar reasons an emergency spring 93 may be provided between handle 98 and housing 86 capable of creating a gap between these parts for the insertion of another tool if the handle should fail to return to its operative position.

In order to assemble the mechanism in the door which has a roll-back 91 for operating the door catch latch bolt H8 and cylinder lock H2 with spring 85 will be inserted into shank 98a," and spring H3 housed in sleeve 99. Thereafter shank 98a will be put in sleeve 99 thereby compressing spring H3 until latch bolt H8 snaps into one of the recesses 89 or 89a. This being done, sleeve 99 is slipped through the tubular extension 81' of the handle housing 88 and the whole mechanism, as an entirety, pushed into the bore 88 whereby the square shaft 99a enters roll-back 91. When the square shaft 99a has been secured to roll-back 91 and the handle housing 88 to the door surface, the mechanism is ready to be operated.

Starting .from the operative position as per Figure 11, a turn of lock H2 retracts latch bolt I I8. Then, the handle may be pushed back until latch bolt H8 snaps into,the opening 89 under the action of spring 85. In order to return handle 98, lock H2 is'turned in the reverse direction. Thereby spring 85 is tensioned in a manner to retract latch bolt H8 from opening 89 and to keep it against the interior side of the opposite wall of sleeve 99. When latch bolt H8 has left opening 89, spring H3 urges shank 98a outward into the operative position which is reached when latch bolt I I8 catches in opening 89d.

The embodiment of my invention, as per Figures 13 to 16 operates without a rotatable sleeve, handle shankv 234 being directly rotatable within tubular extension or stationary sleeve 281 of the handle housing 286. The latch bolt, capable oi lockin'g shank 234 in its operative and inr operative positions, consists of a 'flat spring 22l surrounding the stationary sleeve 281 and secured against longitudinal displacement thereon. One of its ends is rolled into an eye as at I and is capable of protruding through an opening of sleeve 281 into recesses 222 and 223 respectively of shank 234. The handle shank is hollow and encloses a'cylinder lock 221 similar to that shown in Fig. 1 with a tubular extension 224. Extension 224 is provided with two lugs 225 and 226 which are able to move in grooves 222 and 223 respectively of the shank and are capable of displacing eye I of latch bolt spring 22I so as to disengage the handle for its longitudinal displacement. For this purpose, the lugs 225 and 228 are angularly staggered with regard to each' other and arranged in different planes. A square driver bar 228 is secured to the roll-back 91 and shank 234 has bottom228 with a square hole into which the driver bar 228 fits.

In the operative position of the handle, latch bolt spring 22l engages recess 222 in shank 234 (as in Fig. On a turn of the lock 221, lug 225 removes spring 22! from this recess in a manner that the handle may be pushed into the inoperative position of Fig. 14 spring 22| entering recess 223. On a turn of lock 221 in the reverse direction, lug 226 heaves spring 22l out of recess 223 whereupon the spring 2i3 pushes handle and shank 234 back into the operative position.

The embodiment of Figs. 1? and 18 shows a modification of the latch bolt mechanism illustrated in the preceding figures. A locking sleeve 288 encloses the handle shank 235. The cylinder lock 229 is provided with a lug 238 extending through a slot in the wall of shank 235 and connected to locking sleeve 288. When the cylinder lock is turned, lug 238 moves the sleeve 288, and turns it about-its center line. The eye of the locking spring 22l secured to sleeve 291 of the handle housing 296 projects through openings 232 and233 respectively of the shank and the sleeve 288. When sleeve 288 is turned by means of cylinder lock 229 and its lug 238, it

enters between the spring eye and the handle k shank 234 and thus disengages the latter from the said spring eye in a manner that the handle may be displaced in an axial direction into one of its end positions.

Wish to emphasize that I described and illustrated a. cylinder lock in the handle merely as an example of means adapted to move the latch bolt member in a suitable manner and that other means within'the scope of my invention are obvious by which the same result may be obtained.

I claim:

1. In a doorlockhaving a roll-back the combination of a handle having a shank, said handle and shank having an operative and an inoperative position, coupling means coaxial with said shank and adapted to prevent relative rotation of said shank and said roll-back and to permit axial displacement of said shank and said handle into the operative position andout of the same against the door surface, means in connection v with the door surface for preventing rotation of said handle in its inoperative position, a spring actuated latch bolt having two locking positions with respect to said shank and adapted to automatically lock said handle in its two end positions. a cylinder look within the Shank, and eccentric means adapted to retract the latchbolt from one of its locking positions and to tension the latch bolt spring for engagement of the latch bolt in the, second locking position on a turn of the lock in one direction, and to retract the latch bolt from its'second locking position and to tension the latch bolt spring for engagement of the I and shank having an operative and an inoperative position, a sleeve rigidly connected with the roll-back and adapted to axially-guide said shank and to couple said roll-back and said shank for rotation, a spring between said roll-back and said shank, a spring actuated latch bolt, holes in said sleeveand corresponding holes in said shank adapted to be engaged by said latch bolt in the two end positions of the shank, a cylinder look within the shank, the latch bolt spring secured to said cylinder lock, and the cylinder lock adapted to tension said latch bolt spring in a sense to withdraw the latch bolt from one of itslocking positions and to push it into its other locking position on a turn of said lock.

3. A handle lock comprising 'a handle having a shank, said handle and shank having an operative and an inoperative position, a locking device for said handle comprising a latch bolt adapted to move at right angles with respect to the axis ofthe shank into two locking positions, one opposite the other one, a cylinder look within the shank, a spring secured to said lock and engaging said latch bolt, said spring adapted to force said latch bolt in one direction and, on a turn of the lock, in the opposite direction.

'4. A handle lock comprising a handle having a shank, said handle and shank having an operaof the shank into two locking positions, a cylinder lock within the shank, a spring engaging said latch bolt and-adapted to be tensioned in a sense to remove said latch bolt from one looking posi-- tion and to prepare it for engagement in the second locking position on a turn of the lock in one direction, and to remove the latch bolt from the second locking position and to prepare it for engagement in the first locking position on a turn of the lock in the reverse direction.

5. In a door lock having a roll-back the combination of a handle having a shank provided with holes, a sleeve formed integral with the rollback and receiving the shank, a tongue-like member adapted to move radially to the axis of the shank under, spring pressure, two semi-circular grooves in the sleeve and two inclined paths from one groove to the other one, and means within the shank adapted to turn said tongue-like member, said member being adapted to move in said grooves and on said inclined paths.

6. In a door lock having a roll-back the combination of a handle having a shank provided 'with holes, a sleeve formed integral with the roll "groove to the other one and a cylinder lock withment of said shank and lock,

7. In a door lock having a roll-back the combination of a handle having a hollow shank, a sleeve secured to the door and in which the shank is adapted to slide'without rotation with respect to the roll-back, a spring between the roll-back and the shank, said spring surrounding said guide rod and adapted to automatically move the shank into the operative position, a latch bolt resiliently secured to the sleeve and adapted toenter the shank, and means within the shank for relar grooves in said shank, a locking spring secured to said sleeve and adapted to enter said ,shank grooves, a rotatable plug within said shank and provided with two lugs engaging said shank grooves, and means for turning said plug.

9.In a door'lock having a roll-back the combination of a handle having a shank, said handle and shank having an extended or operative and a retracted or inoperative position, a rotatable sleeve adapted to axially guide said shank within said sleeve and to prevent relative rotation between said shank and said sleeve, an abutment within said shank at its end remote from said handle, a coil spring'within said sleeve adapted to bear with one of its ends against said shank and with its other end against said abutment, resiliently operated latch bolt means within. said shank and adapted to engage said sleeve and to automatically lock said handle in its two end positions, means within said shank operable for moving said latch bolt means from its locking positions, and means coaxial with said sleeve and roll-back.

10. A handle lock comprising a handle having a shank, said handle and shank having an extendedor operative and a retracted or inoperative position, a locking device for said handle comprising a cylinder lock within said shank, a latch bolt movable with said cylinder lock and at right angles with respect to the axis of said shank in two locking positions, a spring tending to shift said latch bolt into its locking positions, and guiding means outside said shank for moving said latch bolt from one locking position and tensioning said spring for the engagement of the latch bolt in its second locking position on a turn of the lock and a shifting of the handle in one direction, and for moving the latch bolt from its second locking position and tensioning the spring for the engagement of the latch bolt-in its first locking position on a turn of the lock and the shifting of the handle in the opposite direction.

11. In a door lock having a roll-back, the com-. bination of a handle having a shank, said handle and shank having an extended or operative and moving said latch bolt from its engagement with a; retracted or inoperative position, coupling' means coaxial with said shank and adapted to is adapted to move axially into the operative permanently hold said shank and said roll-back coaxial with said shank and adapted to prevent against-relative rotation but slidable relative to each other in axial direction so as to permit axial displacement of said handle into the operative position and out of the same to inoperative position against the door suriace, means in connection with the door surface for preventing rotation of said handle in its inoperative position, a spring adapted to move the handle automatically into the operative position, resiliently operated latch bolt means adapted to automatically couple said handle in 'its two end positions with said v roll-back against relative axial displacement, and

bination of a. handle having a shank, said handle and shank having an extended or operative and a retracted or inoperative position, coupling means relative rotation of said shank and said roll-back and to permit axial displacement of said shank and said handle into the operative position and out of the same to inoperative position. against the door surface, means in connection with the door surface for preventing rotation of said handle in its inoperative position, a spring adapted to move the handle automatically into the operative position, a resiliently operated latch member havingtwo latching positions with respect to said .shank and adapted to automatically lock saidhandle in its two end positions, and means within the shank operable to remove said latch member from one of its locking positions by a movement in one direction and from the other locking position by a reverse movement. 7

' MAX PAPST. x

Images