US2713257A - Lock mechanism - Google Patents

Description

F. J. M CONNELL ET AL LOCK MECHANISM July 19, 1955 Filed July 13, 1949 3 Sheets-Sheet l FHA INVENTORJ NK a Ms COA/IVELL mw/vq FLETCHER A TTUR/VEYS July 19, 1955 F. J. MCCONNELL ET AL 2,713,257

LOCK MECHANISM Filed July 13, 1949 5 Sheets-Sheet 2 FIG. 3.

u 1 2a 6/ A7 INVENTORJ' FRANK .1. MSCO/V/VELL mvnvq FLETCHER A TTORNE YS July 19, 1955 J. MOCONNELL ET AL 2,713,257

LOCK MECHANISM Filed July 1949 5 Sheets-Sheet 3 5/ FIG. 6.

50 22 3/ I 59' WNW, .74 Z /Z H HHI .2? r 5.3 6 A7 5a mm 34 FIG 7 all/I ATTORNEYS United States PatentQ LOCK MECHAYISM Frank J. McConnell and Irving J. Fletcher, New Britain,

Conn, assignors to The American Hardware Corporation, New Britain, Conn., a corporation of Con necticnt Application July 13, 1949, Serial No. 104,422

5 Claims. (Cl. 70-224) Our invention relates to a latch-actuating mechanism, and this application concerns improvements in mechanims of the type disclosed in the copending application of Frank McConnell, Serial No. 48,626, filed September 10, 1948, now Patent No. 2,620,646 dated December 9, 1952, and in the copending application of McConnell and Fletcher, Serial No. 82,381, filed March 19, 1949, now Patent No. 2,645,927 dated July 21, 1953.

It is an object of the invention to provide an improved device of the character indicated.

It is another object to provide improved unitary roseand-doorknob construction adaptable directly to control a latch mechanism and including dogging means selectably operable from either side of a door.

It is another object to provide a knob-and-rose assembly with improved means for removably holding a knob.

It is a further object to provide improved means for removably holding a cylinder lock in a knob.

It is still another object to provide improved means for retaining a cylinder lock in a knob-and-rose assembly and for permitting easy removal and replacement of the cylinder lock.

Other objects and various further features of the invention will be pointed out or will occur to those skilled in the art from a reading of the following specification in conjunction with the accompanying drawings. In said drawings, which show, for illustrative purposes only, preferred forms of the invention:

Fig. 1 is a vertical sectional view of a unitary roseancl-door-knob assembly incorporating features of the invention;

Fig. 2 is a horizontal sectional view of the assembly of Fig. l and taken substantially in the plane 2-2 of Fig. 1;

Fig. 3 is an inside end view of the device of Figs. 1 and 2, with the back cover of the rose removed and with the knob shank in sections more or less in the plane 3-3 of Fig. 2;

Fig. 4 is a fragmentary vertical sectional view illustrating a modification of a part of the structure of Fig. 1;

Fig. 5 is a sectional view more or less in the radial plane 55 of Fig. 4;

Fig. 6 is a vertical sectional view of a modified knoband-rose assembly incorporating features of the invention;

Fig. 7 is a fragmentary view in section more or less in the plane 7-7 of Fig. 6; Y

Fig. 8 is another vertical sectional view of an arrangement slightly modified from the arrangement of Fig. 6; and

Fig. 9 is a vertical sectional view of a 'knob-and-rose assembly that may be considered an alternative arrangement of that of Fig. 6.

Briefly stated, our invention in a preferred form contemplates improved means for retaining a knob in a rose or for retaining a cylinder lock in the knob, all with a view to rendering simple and fool-proof the replacement of the cylinder lock without endangering the security or ice functioning of the lock. The invention may be applied r such relative rotation.

in connection with a knob-and-rose assembly wherein there is incorporated latch-dogging means for what may be termed the selective dogging of a latch from either side of a door, and, as in the case of the above-mentioned copending patent application, the dogging means may utilize two engageable yet relatively movable elements, one of these elements being actuaole from one side of the door and the other of these elements being actuable from the other side of the door.

In one form to be described, the cylinder lock is held in the knob by means which are not accessible until the knob has been released from the rose, but such a release may be performed in a very simple operation. In a second general arrangement of the invention, the cylinder lock is removable from the knob without requiring removal of the knob from the rose'. In this second arrangement, the knob is formed of two parts, which may be termed the knob proper and the knob shank or knob-shank adapter; these two knob parts are relatively rotatable, and means are provided for selectably engaging these knob parts against relative rotation. When these two knob parts are rendered relatively rotatable, means are provided for releasing or for securing the lock cylinder in the knob upon In one form, the lock cylinder may be threaded to the knob-shank adapter and effectively keyed to the knob proper so that, upon relative rotation of the knob parts, there may be threaded insertion or emoval of the lock cylinder. In an alternative arrangement, the lock cylinder may be threaded to the knob proper and at the same time effectively keyed to the knob-shank adapter, and, again, threaded insertion or removal of the lock cylinder results from relative rotation of the knob parts. in connection with any of the abovementioned general forms of the invention, we provide improved means for resiliently positioning the knob and for resiliently positioning certain of the dogging parts.

Referring to Figs. 1, 2, and 3 of the drawings, our invention is shown in application to a unitary rose-andknob structure with a transversely extending spindle 10 to engage the rollback means of a conventional latch mechanism (not shown). The latch mechanism may be of the type mentioned and shown in the above-identified copending applications, and in the copending patent application of Frank McConnell, Serial No. 748,703, filed May 17, 1947, now Patent No. 2,614,876 dated October 21, 1952. Rotation of the spindle It) will be understood to cause the rollback of the latch to withdraw a latch 'bolt, and it will be understood that the latch mechanism a lock cylinder 14 therein, and dogging means selectably actuable from both sides of the door may be incorporated with the rose 13. The dogging element actuated by the cylinder lock may be a generally radially slidable bolt 15 having a transverse slot or groove 16 for actuating engagement by a crank pin 17 driven by the lock plug 18. In the form shown, the crank pin 17 is not mounted on the lock plug proper (18), but an adapter member 19 carries the crank pin 17 and is secured to the lock plug 13, as 'by a transverse pin 26 The dogging means to 'be actuated from the other side of the door may comprise a plate 22 slidable generally transversely of the knob axis and between guides 23 which may be formed within the body of the rose 13. The slide plate 22 may be notched or cut-away, at at 24, for engagement with the head of the lock-actuated bolt 15. The plate 22 may be shifted upon actuation of a lock-setting spindle 25 from the otherside of the door, as by means of a hand crank dog bolt.

(not shown). The spindle 25. may drive one of two bosses 26 journalled in a back-cover plate 27 for the rose 13; and, by means of crank pins 28 on the bosses 26, the slide plate 22 may be displaced upon an actuation from the inside side of the door. The plate 22 may carry a fixed abutment 29 which in conjunction witha suitably formed spring 30 may provide a detent action or hold one or the other of the two extreme positions of the slide plate 22. The spring 30 may be anchored, as by coiling the same around one of two mounting bosses 31 for the assembly.

In accordance with the invention, we provide a rela-.

tively simple means for assembly and disassembly of the basic components of the described assembly, with a view to ready insertion or removal of the cylinder lock 14. In this manner, it will be appreciated that the householder or the lock-hardware retailer may provide knob and lock assemblies to suit the individual requirements and desires of purchasers. The knob 11 may be of one large piece, with a shank 32 extending through the rose assembly 13 and projecting beyond the back or inside end of the rose 13. Cooperating abutment means may be provided between the back cover plate 27 and the knob shank 32, and, in the form shown, We employ a snap ring 33 to seat 'in an annular groove formed in the knob shank 32. If

desired, the back cover plate 27 may be depressed at the central or hub portion thereof, as at 34, in order to retending to return the key for lock 14 toward the keyremoving position thereof.

In accordance with another embodiment of the invention, we provide improved means for removably retaining a cylinder lock in a knob and-rose assembly, without requiring any dismounting of the rose from the door in order to remove the lock. In the form of Figs. 6 and 7, a cylinder lock 50 is removably retained in such manner as not to require dismounting of the rose 13. In the form of Fig.' 6, the knob is of two parts, which may be termed a knob proper 51 and a knob shank or knobshank adapter 52. The knob parts 5152 may be relatively rotatable and include overlapping flange means ceive and positively to locate the snap ring 33 without producing any greater axial thickness of the assembly.

The spindle 10 may be held within the rose shank by In order. to retain the cylinder lock 14 within the knob.

we have provided mutually cooperating abutment means between the lock-plug adapter 19 and the knob shank 32. Thus, an annular groove 36 may be formed in the lockplug adapter 19, and a pin 37 removably held in a radial hole 38 in the knob shank may serve for axial location and retention of the lock 14 in the knob 11. The pin 37 is preferably of such length as to remain within the groove 36 as long as the knob 11 is journalled in the rose 13. It will be clear, however, that'upon release or removal of the snap ring 33, the entire knob 11, lock 14,

' and spindle 10 assembly may be drawn out of the rose 13 (provided that the lock has been actuated to place the bolt 15 in its lowered position) Once the knob and lock assembly has been thus removed from the rose, the .pin 37 may drop out and the lock 14 quickly removed from the knob 11.

An indicated generally above, novel means may be employed for resiliently returning the knob 11:to a desired central position, and such means may be independent of any spring in the latch mechanism (not shown). In the forms shown, we have provided a second spring 39 which may be coiled around the other mounting boss 31 and include a finger projecting for seating engagement with a generally chordwise groove 40, which may be formed in the knob shank 32. It will be appreciated that the action of spring 39 may be positively to locate a central position for the knob 11, whereby assurance may be had that the dog bolt 15 may, when desired, always enter the dogging slot of the plate 22.

Also as indicated generally above, we provide resilient means for urging the dog bolt 15 in a direction to produce a normal tendency for a lock-setting position of the Such means is shown in detail in Figs. 4 and 5 and may include a relatively stitf spring 41 located within 'a bore 42 in the bolt 15 and retained at its projectnig end by .a snap retainer 43, which may be a generally arcuate stretch of spring material engagingrecesses in the knob shank 32, as at 44. It will be appreciated-that the action of spring 41 may be one of normally urging the bolt 15 into a locking position, that is, in a direction and hub means 53-54, respectively, whereby snap-ring retention of the knob shank 52, as at 33, may serve to retain the knob proper 51 against axial removal from the assembly.

In accordance with the invention, the lock cylinder 50 is engageable with one of the knob parts 51 -52 upon a relative rotation of the lock cylinder with respect to said one knob part, and the lock cylinder 50 is effectively keyed against rotation with respect to the other of said knob parts 5152. In the form shown in Fig. 6, the lock cylinder is threadedly engageable, as at 55, with the knob-shank member 52 and is eflfectively keyed, as by engagement with abutment 56, to the knob proper 51. Means are provided for selectively engaging and releasing the knob parts 51-52 from relative rotation, and in the form shown a threaded member 57 is threaded in the knob-shank member 52 and is engageable with a broached axial slot or groove 58 within the hub 53 of the knob proper 51. An access opening 59 in the knob proper 51 may permit insertion of a tool to operate the threaded member or set-screw 57, and by providing the opening 59 smaller than the diameter of the set-.

may always be retained against loss from the knobv proper 51. We prefer that when the key is in the locked position, the lock plug or plug adapter 60 shall present a smooth outer surface in the path of the setrscrew 57 so as to assure that the two knob parts 51--52 will be locked against relative rotation.

Thus, with the parts in the position shown in Fig. 6, the knob 51 may operate the latch spindle 10 as long as the dogging members 15 and 22 have been freed of each other, either. by a key. operation from the outside or by a'dog-setting handle operation from the inside. When it is desired to remove the lock without removing the rose 13 from the door, the key may be inserted and the plug or plug adapter 60 partially rotated to place an opening or longitudinal groove 61 in alignment with the set-screw 57. The set-screw 57 may then be radially advanced into the groove 61 and out of the groove 58. The two knob parts 51-52 will then. be understood to be free of each other; and, merely by turning the knob 51, the lock cylinder may be propelled out of the knob. Upon assembly, rotation of the knob in the other direction will be understood to draw the lock cylinder 50 into place; and, upon backing the setscrew 57 into the groove 58 in the knob proper 51, the plug adapter 60 may be freed to permit key removal, and the two knob parts 5152 may be locked together.

In Fig. 8, we show an arrangement generally similar to that which has been described in connection with Figs. 6 and 7. In Fig. 8, however, the two knob parts do not have locking hubs and flanges, but the knobshank member 66 is formed with a continuous cylindrical surface 67 to fit within a corresponding borein the knob proper 65. The groove 68 in the knob proper (for receiving the set-screw 69) may be broached for the entire length of the bore, as shown. The knob shank as the lock 71 is held in the assembly. It will be understood that operation of the mechanism of Fig. 8 may be substantially the same as in the case of Fig. 6, except that, upon unthreading the lock cylinder 71 from the knob-shank adapter 66, the knob proper 65 may also be removed. 7

In Fig. 9, we show another form illustrative of the principles of the arrangement of Fig. 6, except that in Fig. 9 the knob proper 72 is engageable with the lock cylinder 73 upon relative rotation, while the knob-shank adapter 74 is efiectively keyed to the lock cylinder 73, as by means of a pin 75. The pin 75 may be fixedly carried in either the lock cylinder 73 or the knob-shank adapter 74; in either case, we prefer that the projecting part of the pin 75 shall extend in excess of the effective length of threaded engagement, at 76, between the lock cylinder 77 and the knob proper 72. As in the case of Fig. 6, the arrangement of Fig. 9 may include set-screw means 57 for selectively locking the two knob parts 72-74 to each other or for locking the knob-shank adapter 74 to the plug adapter 77. It will be appreciated that in the structure of Fig. 9 the operation may be essentially the same as for Fig. 6 and that upon an inward shifting of the set-screw 57 after key-operated alignment of groove 61 with the set-screw 57, the knob 72 may be rotated so as to expel the lock cylinder 73.

It will be appreciated that We have described relatively simple mechanisms for removably retaining various knob and lock parts in assembled relation with a rose. In our arrangements, the parts are self-retaining and are yet accessible with minimum disassembly, as for replacement of a cylinder lock. In the forms in which the cylinder lock is removable from the knob without requiring removal of the rose from the door, the requirement of key operation in order to permit removal of the lock will be understood to provide an effective safeguard against tampering and against loss of the lock.

While we have described our invention in detail for the preferred forms shown, it will be understood that modifications may be made within the scope of the invention as defined in the appended claims.

We claim:

1. In a device of the character indicated, a knob including a shank portion to actuate a spindle, said shank portion having a bore therein, a rose rotatably accommodating said shank portion and having a bore in which said shank portion is journaled, a cylinder lock including a cylindrical portion within the bore of said shank portion, and a radial pin carried by and extending through said shank portion within the bore of said rose and in axially retaining but at least partially rotationally free relation with said lock portion, whereby the bore of said rose may retain said pin when said knob and rose are assembled.

2. In a device of the character indicated, a knob including a shank having a bore therein, a rose having a bore in which said shank is journalled, a cylinder lock including a plug rotatable in said shank bore and having a peripheral groove in a generally radial plane passing through said rose bore, and pin means generally radially slidably carried in said shank and projecting into said groove, the sliding movement of said pin means being limited at one end by the bottom of said groove and at the other end by said rose bore.

3. In a device of the character indicated, a knob including a shank, a rose having a bore rotatably accommodating said shank, snap-ring means coacting between said shank and said rose and accessible Within said rose and removably retaining said shank in said rose, a cylinder lock including a portion fitting within a bore in said shank, and retaining abutment means for retaining said cylinder lock in assembled relation with said knob, said abutment means coacting between said cylinder-lock portion and said knob shank and retained by the bore in said rose, whereby said abutment means may be accessible upon removal of said snap-ring means and upon subsequent removal of said knob shank from said rose.

4. In a device of the character indicated, a knob in cluding a shank to actuate a spindle, a rose rotatably accommodating said shank and having a bore in which said shank is journalled, snap-retaining means coacting between said shank and said rose for removably holding said knob in assembled relation with said rose, a cylinder lock including a cylindrical portion fitting a bore Within said shank, and removable abutment means cooperating between said cylindrical portion and said shank, said abutment means being retained by the bore of said rose and thus accessible for removal when said shank is removed from said rose when said knob shank is journalled in said rose.

5. A device according to claim 1, in which the cylindrical portion of said cylinder lock has a peripheral groove in a generally radial plane passing through said rose bore, said pin projecting into said groove.

References Cited in the file of this patent UNITED STATES PATENTS 1,519,503 Norwood et al Dec. 16, 1924 1,692,013 Wilson Nov. 20, 1928 1,876,257 Miller Sept. 6, 1932 2,008,662 Bechert July 23, 1935 2,012,911 Hurd Aug. 27, 1935 2,079,583 Brauning May 4, 1937 2,082,351 Moore June 1, 1937 2,226,499 Ledin Dec. 24, 1940

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