US3286773A

US3286773A - Auxiliary retainer for removable core

Info

Publication number: US3286773A
Application number: US411389A
Authority: US
Inventors: Fred J Russell; George B Solovieff
Original assignee: Individual
Current assignee: Individual
Priority date: 1964-11-16
Filing date: 1964-11-16
Publication date: 1966-11-22
Anticipated expiration: 1983-11-22

Description

AUXILIARY RETAINER FOR REMOVABLE CORE Filed NOV. 16, 1964 2 Sheets-Sheet l INVENTORS 17250 J. RUSSEL 65 265 ,B. SOLOV/EF'F' ATTORNEYS Nov. 22, 1966 F. J. RUSSELL ETAL 3,286,773

AUXILIARY RETAINER FOR REMOVABLE CORE 2 Sheets-Sheet 2 Filed Nov. 16, 1964 INVENTOR F250 .7. RUSSELL GEORGE B, 5OLO\//EFF" 5 M z m 4 u 4 3 4 W 8 I W 15 w W H 1 w 16 S w U G United States Patent 3,286,773 AUXELHARY RETAENER FOR REMGVAELE CGRE Fred J. Russell, 8635 Utis St, South Gate, Caliii, and George B. Soiovieff, San Clemente, Calif.; said Soloviefi assignor to said Russell Fiied Nov. 116, 1964, Ser. No. 411,389 4 Claims. ((Il. 7(9-371) This is a continuation-in-part of application Serial No. 283,388, filed May 27, 1963 now Patent No. 3,190,091. The invention lies in the general field of door locks, but more particularly that portion of a door lock which provides means for accommodating a removable keyoperated mechanism, frequently termed a core, in proper position for manipulating an appropriate lock device. In door locks which make use of a key-operated mechanism, located within the lock housing, there is considerable advantage in being able to remove the keyoperated mechanism which fits one particular key and in being able to replace it with another key-operated mechanism which requires a different key. The common term for this is re-keying. Being able to re-key a lock satisfies a variety of purposes. If all keys have been lost, a new key-operated mechanism may be needed. If keys have falien into the hands of unauthorized persons, then rekeying is desirable. In still other cases, it may become desirable to have a lock keyed differently so that there is no common 'key with access to all passageways fitted with a look. In other cases, it may be needful to have all locks, regardless of location, capable of being opened by the same key. These instances are cited merely to suggest that there is an ever present need for looks wherein the key-operated mechanism can be removed and replaced at will.

In some instances in the past, the housing itself has served as a means for providing an engagement with a removable key-operated mechanism to hold it in place. On other occasions, as for example, in applicants patent cited above, the spindle has been modified so as to be engaged by the. removable key-operated mechanisn. Although the means heretofore resorted to have certain special advantages, they likewise have limitations.

It is therefore among the objects of the invention to provide a new and improved auxiliary container for a removable core which is, in fact, a separate piece adapted to be separately formed and subsequently assembled with portions of the lock housing, so as to thereafter form a unitary assembly.

Another object of the invention is to provide a new and improved auxiliary retainer assembly in a lock device for accommodation of the removable key-operated mechanism, wherein the retainer, although separately formed, becomes an integral part of the assembly once it is anchored in position.

Still another object of the invention is to provide an auxiliary retainer for a lock adapted to accommodate a removable key-operated mechanism wherein low friction material is employed for the auxiliary retainer, thereby to take full advantage of outstanding characteristics of low friction material as, for example, quiet operation, low cost, ease of construction and assembly, and the assurance of continued efficient operation, while at the same time, making use of conventional metallic material for other portions of the assembly.

Still another object of the invention is to provide a new improved auxiliary retainer of low friction material in a housing assembly which is adapted to accommodate a removable key-operated mechanism, thereby to take advantage of the ease with which machining can be done upon a low friction nonmetallic material for specially shaped cut out portions and forming operations, without in any way sacrificing the needed ruggedness of construction, while at the same time making an especially satisfactory housing assembly at a modest price.

With these and other objects in view, the invention consists in the construction, arrangement, and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter set forth, pointed out in the appended claims, and illustrated in the accompanying drawings.

In the drawings:

FIGURE 1 is a perspective exploded view of the various parts of the housing assembly.

FIGURE 2 is a side view partially broken away of the parts when in assembled form and with a key-operated mechanism in position.

FIGURE 3 is a fragmentary cross-sectional view taken on the line 3-3 of FIGURE 2.

FIGURE 4 is a fragmentary cross-sectional view taken on the line 4- i of FIGURE 2.

FEGURE 5 is a longitudinal sectional view of a second form of the device wherein the housing consists of a door knob.

FIGURE 6 is a cross-sectional view taken on the line 65 of FIGURE 5.

FIGURE 7 is a front view taken on the line 7-7 of FIGURE 5'.

FiGURE 8 is a fragmentary longitudinal sectional view taken on the line 8--8 of FIGURE 5.

In an embodiment of the invention, which is herein described for illustrative purposes, there is shown parts of a housing assembly customarily identified as a deadlock trim and consisting in part of a housing 18 and mounting plate 17. attached to the housing 18 within an annular recess 12, thereby to form a closed chamber 13.

A key-operated mechanism is indicated generally by the reference character 15, this being a commercially available key-operated mechanism frequently termed a core. The key-operated mechanism selected for the present illustration has the form of a figure 8 in cross-section. A portion it of the key-operated mechanism 15 contains a rotating key plug 17, in which is a keyway 18. The key plug 17 is adapted to employ two different keys (not shown), one key being used to extend and retract a cam or gate 1% and the other being an operators key. When the operators key is manipulated, it rotates the key plug 17 to which is attached a tailpiece Ztl in turn engageable with a driver 21 and a lock tailpiece 22, whereby to ianipulate a latch bolt mechanism (not shown).

An auxiliary retainer, indicated generally by the reference character 25, is adapted when assembled to form part of the housing assembly as shown in FIGURE 2. The auxiliary retainer 25 is specially shaped to make this possible. As shown to good advantage in FIGURE 1, the auxiliary retainer 25 is provided at its outer end with an arcuate shoulder 2-6 and anadjacent arcuate flange 27. The arcuate shoulder 26 engages an inner face 28 of a face plate 29, and the arcuate flange 27 fits within an arcuate wall 3% of one section 31 of a figure 8 opening through the face plate 29. The section 31, together with another similar section 32, accommodates the key-operated mechanism 15.

At the inner end of the auxiliary retainer 25 is a projection 33 smailer in diameter than the diameter of a body 34 of the auxiliary retainer 25 whereby to form an inwardly facing annular shoulder 36. In the mounting plate 11 there is provided an opening 37 adapted to snugly receive the projection 33. A radial extension 38 of the opening 37 provides circumferentially facing

retainins areas

39 and 44 which are adapted to receive a radially extending lug 41 on the body 34 of the auxiliary retainer 25. Engagement of the lug 4]. with the

retaining areas

39 and 40 prevent the auxiliary retainer from rotating, once in position.

A slot 42 extends from the outermost portion of the body 34 axially inwardly to a cut out area 43 adjacent the lug 41. The cut out portion 43, joining the slot 42 forms an inwardly facing shoulder 44.

When the auxiliary retainer 25 is mounted in the position shown in FIGURE 2, it is snugly held between the face plate 29 and the mounting plate 11, wherein the inner face 28 of the face plate 29 presses against the arcuate shoulder 26 of the auxiliary retainer 25; and the mounting plate 11 at its inside face 45 presses against the annular shoulder 36, thereby firmly holding the auxiliary retainer 25 in position. As previously described, the lug 41 retained as it is in the radial extension 38 of the opening 37 prevents the auxiliary retainer 25 from rotating under any circumstances.

Within the auxiliary retainer 25 is a bore 46 which is adapted to receive the portion 16 of the key-operated mechanism 15. The key-operated mechanism 15 is of such size that it freely enters the

sections

31 and 32 of the figure 8 opening in the face plate 29, whereafter the portion 16 of the key-operated mechanism 15 slides freely into the bore 46 while the junction between portions 16 and the remainder of the key-operated machanism 15 passes into the slot 42. While this is taking place, the gate 19 will have been withdrawn into the body of the key-operated mechanism 15 by manipulation of the removal key, previously made reference to, which has been inserted into the keyway 18.

Once in position, an extension 47 of the key-operated mechanism 15 fits within an appropriate recess 48 in the outer end of the auxiliary retainer 25. Also, once in the position shown in FIGURE 2, the gate 19 is then extended by the removal key so that an outer end 49 of the gate 19 falls behind the inwardly facing shoulder 44 of the body 34 whereby to interlock the key-operated mechanism 15 with the auxiliary retainer 25 so that it cannot be removed except by manipulation of the removal key. Such manipulation is possible, however, by use of the removal key whereby the gate 19 can be retracted thereby to disengage the outer end 49 from the inwardly facing shoulder 44, after which the key-operated mechanism 15 can be extracted outwardly through the figure 8 opening in face plate 29. This operation may carry with it the tailpiece 20 which can slide free of the driver 21.

It has been found specially advantageous to construct the auxiliary retainer 25 of some one or another commercially available synthetic plastic resin material having adequate strength and low friction surface characteristics such, for example, as nylon or Delrin. It will be understood, however, that the essence of the disclosure lies in making the auxiliary retainer 25 a separate piece so that it can be separately constructed and thereafter assembled advantageously within the housing and the mounting plate 11 to form a housing for the key-operated mechanism 15.

In a second form of the device illustrated in FIGURES 5, 6, 7, and 8, the housing 10 is replaced with a somewhat conventional door knob 55. The door knob 55 has a face plate 56 in which is a substantially figure 8- shaped

opening having sections

57 and 58 which will accommodate a key-operated mechanism in the same manner as heretofore described. At the inner end of the door knob 55 is a shank 59, a reduced portion 60 of which is rotatably mounted in a bearing 61 of a substantially conventional rose 62.

A mounting plate 63 overlies the inside face of an inner end wall 64 of the door knob 55.

Arcuate projections

65 and 66 forming part of the shank 59 extend through appropriate arcuate appertures 67 and 68 in the mounting plate 63 where expanded portions 69 anchor themounting plate 63 to the shank 59. Circumferentially facing retaining

areas

70 and 71 provide a space therebetween for reception of a lug 41' on the auxiliary retainer 25.

If desired, a second lug 41", diametrically opposite from the lug 41, may be retained between circumferentially facing

areas

72 and 73. On some occasions, as for example in making use of the auxiliary retainer 25 in the form of devices of FIGURES 5, 6, 7, and 8, the inner end of the auxiliary retainer 25 may be provided with a tapered portion 74 so that it can be more readily forced through an opening 75 in the mounting plate 63.

Arcuate beads

76, 76 may be employed, projecting to a slightly larger diameter than the diameter of the opening 75, so as to anchor behind the mounting plate 63, thereby to assist in holding the auxiliary retainer 25 in position.

In this form of housing assembly, the key-operated mechanism 15 operates in substantially the same fashion in making use of its gate 19 to hold the key-operated mechanism 15 in position in the auxiliary retainer 25. When in position, the key-operated mechanism 15 operates through a spindle 77 to manipulate a substantially conventional latch bolt mechanism (not shown).

It is significant to note that the entire interior of the body 34 of the auxiliary retainer 25 can be made perfectly smooth and with relatively low friction characteristics, whether made of metal or low friction material, but that the low friction characteristic is substantially greater when the low friction material is employed. All interior portions of the auxiliary retainer 25 which accommodate the key-operated mechanism 15 have the same characteristics. Moreover, in both forms of the invention, the relative distances between the

shoulders

26 and 36 of the auxiliary retainer 25 can be held to the most effective dimension whereby to provide a snug fit between opposite portions of the lock housing which press against them. In the housing assembly described, substantially the entire interior consists of the auxiliary retainer 25 which, being a separate piece and separately formed, can be cut and shaped independently and thereafter assembled with ease in the other portions of the device.

While the invention has herein been shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices.

Having described the invention, what is claimed as new in support of Letters Patent is:

1. In a lock device, a housing comprising a mounting plate at the inner end having an opening therein and a face plate at the outer end having a hole therein, and a key-operated mechanism having a projecting cam means thereon responsive to operation by a removal key and not responsive to operation by an operator key, the combination of an auxiliary retainer comprising a sleeve in endwise engagement with said face plate, a portion of the sleeve having a position in said hole, the inner end of the sleeve being in engagement with the mounting plate, and a projection on said inner end having a position in said opening, a shoulder on said portion in endwise engagement with said mounting plate, and means holding said sleeve in nonrotating engagement with one of said plates consisting of rotationally facing shoulders on said one of said plates and said sleeve, whereby said sleeve is anchored nonrotatably in position between said face plate and said mounting plate, said sleeve having a slot for reception of a portion of the key-operated mechanism, and a shoulder adjacent the slot engageable with said cam means whereby to retain said key-operated mechanism in said auxiliary retainer.

2. In a lock device, a housing comprising a mounting plate at the inner end having an opening therein and a face plate at the outer end having a hole therein, and a key-operated mechanism having projecting cam means thereon responsive to operation by a removal key and not responsive to operation by an operator key, the combination of an auxiliary retainer comprising a sleeve of syrb thetic plastic resin material in endwise engagement with said face plate, a portion of the sleeve being in alignment with said hole, the inner end of said sleeve being in endwise engagement with the mounting plate and a projection on said inner end having a position in said opening, a shoulder on said portion in endwise engagement with said mounting plate, and means holding said sleeve in nonrotating engagement with one of said plates consisting of rotationally facing shoulders on said one of said plates and said sleeve, whereby said sleeve is anchored nonrotatably in position between said face plate and said mounting plate, said sleeve having a slot for reception of a portion of the key-operated mechanism and a shoulder adjacent the slot engageable with said cam means whereby to re tain said key-operated mechanism in said auxiliary retainer.

3. In a lock device, a housing comprising a mounting plate at the inner end having an opening therein, a face plate at the outer end having a hole therein and a keyoperated mechanism having projecting cam means thereon responsive to operation by a removal key and not responsive to operation by an operator key, the combination of an auxiliary retainer comprising a sleeve having a shoulder at the outer end engageable with the inside of said face plate, a portion of said sleeve being in alignment with said hole, the inner end of said sleeve having a position in said opening, a rearwardly facing shoulder on said sleeve in engagement with the mounting plate adjacent said opening, circumferentially facing retaining means on said mounting plate and a radially extending lug on the sleeve in nonrotating engagement with said retaining means, whereby said sleeve is anchored nonrotatably in position between said face plate and said mounting plate, said sleeve having a slot extending inwardly from the outer end for reception of a portion of the keyoperated mechanism, and an inwardly facing shoulder at the side of the slot engageable with said cam means whereby to retain said key-operated mechanism in said auxiliary retainer.

4. In a lock device, a housing comprising a mounting plate at the inner end having an opening therein, a face plate at the outer end having an arcuate hole therein, and a key-operated mechanism having a projecting cam means thereon responsive to operation by a removal key and not responsive to operation by an operator key, the combination of an auxiliary retainer comprising a sleeve of synthetic plastic resin material having an arcuate shoulder at the outer end engageable with the inside of said face plate and an arcuate flange on the sleeve adjacent the shoulder having a position in said hole, a projection on the inner end of said sleeve having a position in said opening, and a rearwardly facing shoulder at the junction of said projection and said sleeve in engagement with the mounting plate adjacent said opening, circumferentially facing retaining means on said mounting plate and a radially extending lug on the sleeve in nonrotating engagement with said retaining means, whereby said sleeve in anchored nonrotatably in position between said face plate and said mounting plate, said sleeve having a slot extending inwardly from the outer end for reception of the key-operated mechanism and aninwardly facing shoulder at the side of the slot engageable with said cam means whereby to retain said key-operated mechanism in said auxiliary retainer..

References Cited by the Examiner UNITED STATES PATENTS 721,802 3/ 1903 Home 370 2,079,583 5/1937 Brauning 70224 2,484,961 10/ 1949 Russell et al 70379 X 2,838,926 6/1958 Schmid 70216 3,019,633 2/1962 Russell et a1. 70224 3,206,958 9/1965 Best 70369 X EDWARD C. ALLEN, Primary Examiner.

P. TEITELBAUM, Assistant Examiner.

Claims

1. IN A LOCK DEVICE, A HOUSING COMPRISING A MOUNTING PLATE AT THE INNER END HAVING AN OPENING THEREIN AND A FACE PLATE AT THE OUTER END HAVING A HOLE THEREIN, AND A KEY-OPERATED MECHANISM HAVING A PROJECTING CAM MEANS THEREON RESPONSIVE TO OPERATION BY A REMOVAL KEY AND NOT RESPONSIVE TO OPERATION BY AN OPERATOR KEY, THE COMBINATION OF AN AUXILIARY RETAINER COMPRISING A SLEEVE IN ENDWISE ENGAGEMENT WITH SAID FACE PLATE, A PORTION OF THE SLEEVE HAVING A POSITION IN SAID HOLE, THE INNER END OF THE SLEEVE BEING IN ENGAGEMENT WITH THE MOUNTING PLATE, AND A PROJECTION ON SAID INNER END HAVING A POSITION IN SAID OPENING, A SHOULDER ON SAID PORTION IN ENDWISE ENGAGEMENT WITH SAID MOUNTING PLATE, AND MEANS HOLDING SAID SLEEVE IN NONROTATING ENGAGEMENT WITH ONE OF SAID PLATES CONSISTING OF ROTATIONALLY FACING SHOULDERS ON SAID ONE OF SAID PLATES AND SAID SLEEVE, WHEREBY SAID SLEEVE IS ANCHORED NONROTATABLY IN POSITION BETWEEN SAID FACE PLATE AND SAID MOUNTING PLATE, SAID SLEEVE HAVING A SLOG FOR RECEPTION OF A PORTION OF THE KEY-OPERATED MECHANISM, AND A SHOULDER ADJACENT THE SLOT ENGAGEABLE WITH SAID CAM MEANS WHEREBY TO RETAIN SAID KEY-OPERATED MECHANISM IN SAID AUXILIARY RETAINER.