US2062598A - Door lock - Google Patents

Description

Dec. 1, 1936.

w. F. NELSEN 2,062,598

noon LOCK Filed April 8, 1935 k I wwuimu uni INVENTOR ATTORNEY Patented Dec. 1, 1936 UNITED STATES DOOR LOCK Walter F. Nelsen, Oakland, Calif, assignor to Ry-Lcck Company Ltd., San Leandro, Calif., a

corporation Application April 8, 1985, Serial No. 15,175

5 Claims. (01. 7091) This invention relates to door locks of the latch bolt type for outside doors, and is of that general character in which the exterior door knob when locked is disconnected from the bolt actuating spindle, while the interior knob is always connected to the spindle and may be turned at will to open the door from the inside.

The lock of the present invention is particularly designed for use on the main doors of public rooms or halls of various kinds in the use of which, either by the public or in connection with janitor or other service, it is desired that the door shall be capable of being freely opened and closed fro-m the outside without the use of a key.

The principal object of this invention therefore is to provide a latch bolt lock for the above purpose so constructed that when the door is locked the outer knob will'be disconnected from the bolt spindle and at the same time held from turning without interfering with the rotation of the inner knob; and by inserting and rotating a key in the lock barrel of the outer knob, said knob will be both released for free turning and at the same time operatively connected to the spindle so that the door may be'opened from the outside by turning the'outer knob. When the key has been thus turned it may be withdrawn without disturbing the operative connection of the outer knob with the spindle so that the door may be freely opened and closed from either side without the use of the key. When the key is again inserted and rotated in the opposite direction the operative connection is broken and the outer knob is restored to its locking position.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purpose for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawing similar characters of reference indicate corresponding parts in the several views:

Figure 1 is a sectional elevation of my improved lock, taken transversely through a door showing the outer knob in its unlocked position.

Figure 2 is a sectional plan of the housing sleeve for the lock mechanism, showing the mounting of the same in connection with the stationary supporting. plate.

Figure 3 is an end view of said housing.

Figure 4 isa cross section on the line 4-4 of Figure l.

Figure 5 is a fragmentary elevation mainly in section of the lock structure, showing the outer knob locked and disengaged from the bolt spindle. Figure 6 is a cross section on the line 66 of Figure 5.

Figure 7 is an end view of the supporting collar of the spindle. e

Figure 8 is a fragmentary sectional plan of the spindle engaging plate taken on the line 88 of the usual manner, the spindle extending through the opening 2 axially thereof and through the bolt housing 4, where it is operatively connected to the bolt in the ordinary manner. This general arrangement of parts is fully shown in Patent No. 1,919,750, dated July 25, 1933, and it is not therefore necessary to illustrate the same in detail here.

The spindle also projects througha plate or disc 1 which covers the inner face of the opening 2 and supports a thimble 8 which forms a centralizing means for the base collar 9 of the knob 5. Another plate or disc I is disposed against the opposite face of the door over the opening 2, vertically opposed circular segments H being secured to and projecting inwardly from the plate ill in straddling relation to the housing 4. At its inner ends the segments are provided with radial inturned flanges 12, tapped to receive screws l3 projecting through the plate ,1. In this manner the two plates 1 and Ill may be rigidly clamped against the door without the use of screws or the like in the door itself. The plate I0 also rigidly supports an outwardly projecting thimble M which turnably engages the base collar l of the outer knob l6.

Mounted inside the knob I6 is a lock barrel H of a standard cylinder type, arranged at its outer end for the reception of a suitable key, the rotation of which directly rotates the inner cylinder [8 of the lock. The barrel I1 is held against axial movement and is centralized in the knob by a washer I9 non-turnably engaging the same, another washer 20 abutting against the washer l9 and turnably engaging a circumferential groove 2| in the cylinder l8 beyond the barrel, and another washer 22 engaging the washer 2| and the outer periphery of the cylinder I8, andfitting closely within the knob at its inner end. These washers are clamped together by screws 23 which project through a flange 24 projecting outwardly from a housing sleeve 25 which is disposed axially of the knob and which projects through the plate In to the inner face of the same, as shown in Figure 2.

At its inner end the sleeve is provided on the outside with short longitudinally extending grooves 26 which are engaged by radial lugs 21 projecting inwardly from a ring 28 disposed about the sleeve on the outside of the plate I0, and by axially extending lugs 29 projecting from a washer 30 abutting against the inner face of the plate III. In this manner the sleeve is held from further inward movement.

Turnable within the sleeve 25 is a relatively short exteriorly threaded cylinder 3| having at its outer end a. cross slot 32 into which a tongue 33 always projects. This tongue is fixed on and projects from the inner end of the lock cylinder l8. The cylinder 3| has a socket drilled from its inner end to turnably support the adjacent end of the spindle 6, as shown in Figure 1. Just inwardly of said cylinder a collar 34 is mounted on the spindle in freely turnable but non-axially movable engagement therewith; said collar having an enlarged flange 35 at its inner end engaging the inner face of the washer 30. At its outer end the collar is formed with opposed circumferentially extending and outwardly projecting lugs 36 which, when the collar is inserted into the sleeve 25 form its inner end and is then turned through substantially 90, engages behind lugs 3'! formed on and projecting inwardly from the bore of said sleeve. When the collar is thus positioned the cylinder 3| is held against axial movement between the outer end of said collar and the inner end of the cylinder I8. It will thus be seen that when the various parts are assembled in the above described order the outer knob and sleeve 25 are held as a unit against either outward or inward axial movement, but otherwise can freely turn.

Such turning or non-turning of the outer knob relative to the door, and the connection or disconnection of said knob with the spindle is accomplished as follows:

Threaded on thecylinder 3| is a split band 38 from which opposed parallel fingers 39 project inwardlyof the door, being guided against rotation by opposed longitudinal slots 40 in the sleeve 25 and notches 4| in the flange 35; said notches being. positioned to register with the slots 40 only when the lugs 36 are behind the lugs 31. The fingers also project through and are secured to an actuating plate or collar 42 disposed between the flange 35 and the bolt housing 4, inside the fixed segments H,

The plate 42 has a central square opening 43 which, when the plate is moved outwardly or to a position adjacent the flange 35, engages over .the corresponding squareportion 6a of the spindle 6 in non-turning relation therewith, as shown in Figures 1 and 4. Such movement is. of course imparted to the fingers and actuating plate by the rotation of the cylinder 3|, which rotation is in turn imparted to said cylinder by rotation of gers 3| and the actuating plate 42 must rotate as a unit, the spindle 6 may be turned and the bolt released from the door allowing the latter to open. It may here be noted that the movement of the key itself does not turn the spindle, its only function being to rotate the threaded cylinder 3| in one direction or the other, and when it has accomplished its purpose it may be withdrawn from the lock, leaving the cylinder3| in whatever position it has assumed by the previous rotation of the key.

' When however the actuating plate is moved inwardly of the door a predetermined distance by a suitable rotation of the key, or until the advanced end of the split band 38 brings up against a suitable pin 44 and the threaded groove of the cylinder 3|, the opening 43 in the actuating plate 42 moves over a smaller rounded portion 6b of the spindle 6, as shown in Figures 5 and 6. This releases the spindle from operative connection with the actuating plate, preventing any rotation of the outer knob from imparting rotation to the spindle, without interfering with the rotation of said spindle by the inner knob. The outer knob itself however is now held against any rotation, since radial shoulders 45 formed in the opposite sides of the actuating plate 42 are engaged by lugs 46 projecting inwardly from the adjacent portions of the segments II, as shown in Figure 6.

In order to rigidly yet removably connect the fingers 39 to the actuating plate, so that the latter may be removed for assembly or dismantling purposes, said fingers project through the plate a short distance and immediately behind the plate are provided with notches 41 in one side, as shown in Figure 8. The notches are normally engaged by heads 48 turnably mounted on the back side of the plate 42 and operable from the opposite side of said plate. Said heads are flat on one side as indicated and are arranged so that when their fiat sides are at right angles to the edges of the fingers, the heads clear the notches of the fingers allowing the actuating plate to be slid ofi the same.

To remove the lock structure from the door it is only necessary to remove the inner knob from the spindle, which enables the thimble 8 to be removed. This exposes the screws l3 which may be withdrawn to allow the plate I to be removed and thus exposing the opening 2. The outer knob together with all parts connected thereto and including the spindle may then be withdrawn, exposing the actuating plate 42 for removal in the manner above described. This done the fingers 39 are retracted sufficiently to clear the slots 4| of the flange 35, allowing the latter to be rotated so that the lugs 36 may be turned out of register with the lugs 31 and the collar 34 pulled from the sleeve 25 together with the spindle. This operation then leaves the sleeve 25 and outer knob free to be. withdrawn clear of the plate In.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

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

1. In a lock of the latch bolt type, a bolt actuating spindle, an outer knob axially alined therewith and relative to which the spindle is normally turnable, an element slidable on the spindle and having a central opening through which the spindle projects, the spindle being formed in cross section to non-turnably engage the opening when the element is in one position and to turn in the opening when the element is in another position, a sleeve fixed in axial connection with the knob for rotation therewith, said sleeve having opposed longitudinal slots, fingers slidable in and guided by the slots, said fingers at one end being rigidly secured to the element, and means operable at will from exteriorly of the knob for sliding the fingers in opposite directions selectively to correspondingly move the element to its different positions.

2. A structure as in claim 1, in which said last named means includes a threaded cylinder turnable in the sleeve but mounted against axial movement therein, the adjacent ends of the fingers projecting radially through their slots and engaging the threads of the cylinder.

3. In a lock of the latch bolt type, a bolt actuating spindle, an outer knob axially alined therewith and relative to which the spindle is normally turnable, a plate slidable on the spindle, the latter being formed in cross section to non-turnably engage the plate when the latter is in one position and to turn therein when the plate is in another position, a sleeve fixed in axial connection with the knob to rotate therewith and disposed between the knob and plate, means between the sleeve and plate tying the same together for rotation as a unit while allowing of axial movement of the plate relative to the sleeve and along the spindle, and means operable from exteriorally of the knob for thus moving the plate.

4. In a lock of the latch bolt type, a bolt actuating spindle, an outer knob axially alined therewith and relative to which the spindle is normally turnable, a plate slidable on the spindle, the latter being formed in cross section to nonturnably engage the plate when the latter is in one position and to turn therein when the plate is in another position, a sleeve fixed in axial connection with the knob to rotate therewith and disposed between the knob and plate, means between the sleeve and plate tying the same together for rotation as a unit while allowing of axial movement of the plate relative to the sleeve and along the spindle, the spindle projecting into the sleeve, a collar mounted against axial movement in the sleeve and turnably supporting the adjacent portion of the spindle while holding the same against axial movement, a cylinder turnable in the sleeve between the collar and knob, means betweeen the cylinder and plate to move the latter along the spindle with the rotation of the cylinder, means operable from exteriorly of the knob for rotating the cylinder, and means between the collar and cylinder to hold the same against axial movement. 5. In a lock of the latch bolt type, a bolt actu ating spindle, an outer knob axially alined therewith and relative to which the spindle is normally turnable, a plate slidable on the spindle, the latter being formed in cross section tononturnably engage the plate when the latter is in one position and to turn therein when the plate is in another position, a sleeve fixed in axial con nection with the knob to rotate therewith and disposed between the knob and plate, means between the sleeve and plate tying the same together for rotation as a unit while allowing of axial movement of the plate relative to the sleeve and along the spindle, a cylinder turnable in the sleeve and held against axial movement therein, means between the cylinder and plate to move the latter along the spindle with the rotation of the cylinder, and means operable from exteriorly of the knob for thus rotating the cylinder.

WALTER F. NELSEN.

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