US3337248A - Mortise lock knob locking means - Google Patents

Description

1967 I F. J. RUSSELL ETAL 3,337,248

MORTISE LOCK KNOB LOCKING MEANS Filed April 25, 1965 s Sheets-Sheet 1 F250 J3 Russ/21.1.

L 12065.2 \7; NOL/N INVEHTOQS 86' I3 I29 I32 I3! 93 By ATT'QENEYS Aug. 22,1967 F. J. RUSSELL ETAL 3,337,248

MORTISE LOCK KNOB LOCKING MEANS Filed April 23, 1965 3 Sheets-Sheet i3 F250 .72 RUSSELL 120652 J; Nam/v INVENTOQS Aug. 22, 1967 F7 uwussrsu. ETAL 3,337,243

MORTISE LOSK KNOB LOCKING MEANS Filed April 25, 1965 3 ShetS-Sheet 3 17250 J- RUSSELL R0652 Jo Nouw INVENTOES .fiwix e" Chewy.

United States Patent Ofiice 3337,24 Patented Aug. 22, 1967 3,337,248 KNOB LocKmG MEANS MORTISE LK Fred .1. Russell, 8635 Otis St., South Gate, Calif.

and Roger J. Nolin, Monterey Park, Calif.; said Nolin' The invention relates to door locks in general and is especially useful in locks usually identified as a mortise lock, namely, one which fits into a recess which has been cut into the door from the edge of the door. When a rugged, high quality type of lock is needed, a mortise lock often is selected. Typical installations for high quality mortise type lock are installations for hotels, hospitals, and schools.

One of the reasons for installing a mortise type lock is for greater locked door security. Accordingly, extra provisions to assure a high degree of security are he quently desirable, such, for example, as double locking the door. Although providing a door with two locks, in order to make double locking possible, does give an added degree of security, such an approach requires many extra parts and extra lock installation costs.

Among the objects of the invention is to provide a new and improved mortise type lock which is capable of being double locked by use of a single locking mechanism.

Another object of the invention is to provide a new and improved mortise type lock wherein a locking mechan ism can be made use of for extending a dead bolt into locked position as well as for barring the hand-hold against the operation usually depended upon to withdraw the latch bolt. In this way, a double locking of the door is provided.

Still another object of the invention is to provide a new and improved mortise type lock wherein the dead bolt actuating mechanism is so constructed as to be extended by a key-actuated cylinder or turn device wherein, by employment of relatively few additional pieces, the same mechanism can be used to block rotation of an outside hand-hold which normally withdraws the latch bolt, thereby to make use of the latch bolt in addition to the dead bolt for locking the door against entry from the outside.

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 fragmentary side elevational view of a door, showing a mortise lock mounted therein.

FIGURE 2 is an end elevational view of the installation shown in FIGURE 1.

FIGURE 3 is a side elevational view substantially broken away, showing the operating parts in unlocked position.

FIGURE 4 is a side elevational view similar to FIG- URE 3, but showing the operating parts in locked condition with respect to a door frame and strike plate.

FIGURE 5 is a longitudinal sectional view on the line 55 of FIGURE 4.

FIGURE 6 is a cross-sectional view on the line 6-6 of FIGURE 3.

FIGURE 7 is a cross-sectional view on the line 7-7 of FIGURE 4.

A lock construction especially well adapted to the invention here under consideration is shown and described in copending applications Ser. No. 450,461, filed April 23, 1965; Ser. No. 450,462, filed April 23, 1965; Ser. No. 450,450, filed April 23, 1965; Ser. No. 450,447, filed April 23, 1965; Ser. No. 450,472, filed April 23, 1965; Ser. No. 450,460, filed April 23, 1965.

In an embodiment of the invention which has been selected as one for showing a typical arrangement of structural parts involving the invention, there is shown a mortise type block indicated generally by the reference character 10, substantially all of which is housed within a case 11. An inside wall 12 and an outside wall 13, forming part of the case 11, form a chamber between them, one end of which is defined by a front end wall 14 and the other by a rear end wall 14'. A top wall 15 and a bottom wall 15' complete the enclosure. A dead bolt 16 reciprocatably mounted in the case 11 extends outwardly through a hole 17 in the front end Wall 14 and an aligned hole 17 in a front plate 21. A latch bolt 18, also reciprocatably mounted in the case 11, extends outwardly through the hole 17 and an aligned hole 19.

To aid in understanding the device and its mode of operation, the case 11 is shown mounted in a door 24 extending inwardly from an end edge 23. Machine screws 25 extending through the front plate 21 fasten the front plate 21 to the front end wall 14, and other screws (not shown) hold the case 11 in position on the door 24. In a door frame 26 is a recess 27 containing a box 28 of a strike plate 29 fastened to the door frame 26 by screws 30. An opening 31 in the strike plate 29 accommodates the dead bolt 16, and an opening 32 accommodates the latch bolt 18.

For reciprocatably mounting the dead bolt 16 in its position in the case 11, there is provided a block 35, the block 35 forming part of the interior construction of the case 11. The dead bolt 16 slides in a slideway 37 in the block 35 and extends outwardly through the hole 17 in the front end wall 14 and the aligned hole 17 in the front plate 21. For manipulating the dead bolt 16 between the unlocked position of FIGURE 3 and the lock position of FIGURE 4, there is provided a drive linkage consisting of a rock arm 40 pivotally mounted in the case 11 on a shaft 41 and a link 42 having a pivotal connection 43 at a free end 44 and another pivotal connection 45 at the other end of the link 42 to the dead bolt 16.

On the inside wall 12 of the case 11 there is provided a turn device indicated generally by the reference character 46. Opposite the turn device 46 and mounted on the outside wall 13 of the case 11 is a key-actuated mechanism indicated generally by the reference character '47. Through an appropriate actuator 48, the dead bolt 16 can be operated either by the turn device 46 or the keyactuated mechanism 47. The turn device 46 is provided with a handle 49. A housing 51 for the turn device 46 has a threaded engagement 52 with the structure of which the inside wall 12 is part. The turn device 46 includes the actuator 48 nonrotatably mounted thereon. A rounded driver 54 on the free end of the actuator 48 is movably received in a somewhat pie-shaped pocket 55, so that as the actuator 48 is rotated by manipulation of the handle 49 in a clockwise direction, as viewed in FIGURES 3 and 4 the actuator 48 will rotate the rock arm 40 in a counterclockwise direction, the rock arm 40, in turn, moving the link 42, which results in shifting the dead bolt 16 from the unlocked position of FIGURE 3 to the locked position of FIGURE 4. When the dead bolt 16 is to be unlocked, the handle 49 is rotated in the opposite direction, causing the actuator 48 to be rotated in a counterclockwise direction, as viewed in FIGURES 3 and 4. Thereby, through the agency of the rounded driver 54 in the pocket 55, the rock arm 46 is caused to rotate in a clockwise direction and, by this motion, pull upon the link 42 to withdraw the dead bolt 16 from the locked position shown in FIG- URE 4 to the unlocked position shown in FIGURE 3. The turn device 46 alternately could be a key-actuated mechanism such as is provided on the outside wall 13 of the embodiment and which is described hereafter.

To enable the actuator 48 to be manipulated by operation of the key-actuated mechanism 47, a conventional key plug 56 is rotatably mounted in a housing 57 in a substantially conventional manner. At the inside end of the key plug 56 is a tail disk 6t). On the tail disk 60 is a boss 62, a fragment of which is shown in FIGURES 3 and 4. The tail disk 60 and the accompanying boss 62, when rotated by the key-actuated mechanism 47, rotates about a center point 61. Hence, rotation of the tail disk 60 is eccentric.

The boss 62 extends inwardly from the tail disk 60. Opposite end 63 and 64 of the boss 62 are made use of in rotating the actuator 48 by manipulation of the keyactuated mechanism 47. For example, when the key-actuated mechanism 47 is rotated counterclockwise, as viewed in FIGURES 3 and 4, the end 63 is forced against a shoulder 65 of the actuator 48, causing the actuator 43 to rotate in a clockwise direction and accordingly shift the rounded driver 54 against the rock arm 40, causing the rock arm 40 to rotate in a counterclockwise direction about the shaft 41, as viewed in FIGURES 3 and 4, thereby to extend the dead bolt 16 to locked position through the mechanism previously described. Contrarily, when the key-actuated mechanism 47 is to be used to withdraw the dead bolt 16, it is rotated in a counterclockwise direction, as viewed in FIGURES 3 and 4, through a lost motion distance which is accounted for by the length of the boss 62, a compared with the distance between the shoulder 65 and a second shoulder 66 on the actuator 48. After traversing the lost motion distance, the end 64 is impressed against the shoulder 66, causing the actuator 48 to be rotated in a counterclockwise direction, and thus, in turn, causes the rock arm 40 to rotate in a clockwise direction, thereby to withdraw the dead bolt 16 to the unlocked position of FIGURE 3.

In order to open the door 24 from the outside when it is locked, it is necessary for the occupant to withdraw the latch bolt d8, which is also employed to lock the door 24 from the outside. To accomplish this, a drive linkage is employed interconnecting the tail disk 60 with the latch bolt 18. The drive linkage includes an actuator link 70 pivotally secured to the case 11 by a pivot pin 71. A flange 72 on the actuator link 70 is positioned behind a flange 73 on a roll back link 74. A head 75 on a latch bolt rod 76 overlies the flange 73, the latch bolt rod 76 being attached to the latch bolt 13 by a pivotal connection 77. A coiled spring 79 normally holds the latch bolt 18 in the extended position shown in FIGURES 3 and 4, acting in a substantially conventional manner.

The circumference of the tail disk 66 serves as an arcuate cam 80 which is adapted to engage a cam plate 81 on the actuator link 70. Hence, when the tail disk 60 rotates eccentrically in a clockwise direction about the center point 61, as viewed in FIGURES 3 and 4, for example, the arcuate cam 86 is moved against the cam plate 81, causing the actuator link 7d to swing in a counterclockwise direction about the pivot pin 71, as viewed in FIG- URES 3 and 4. This, in turn, causes the flange 72 to move in a direction from left to right, as viewed in FIGURES 3 and 4, against the flange 73, and thi flange, in turn, moving against the head 7 S of the latch bolt rod 76, withdraws the latch bolt 18.

When the dead bolt 16 is in unlocked position, the latch bolt 18 can be retracted by rotation of the key-actuated mechanism 47 because the dead bolt 16 will be withdrawn by operation of the boss 62, in the manner previously described, at the same time that the latch bolt 18 is being withdrawn by the mechanism details just related above.

The latch bolt 18 can also be withdrawn by reverse rotation, namely, counterclockwise rotation of the tail disk 60. When this occurs, the arcuate cam moves against a flange 82 on a lever 83, causing the lever 83 to shift toward the left as viewed in FIGURES 3 and 4. Movement as described forces the flanged end 84 against an extension 70' of the actuator link 70, which then pivots counterclockwise around the pivot pin 71 and withdraws the latch bolt 18 as previously described.

It is also necessary to be able to withdraw the latch bolt 18 from the inside of the door 24 as, for example, when the dead bolt 16 is withdrawn but the door 24 still is closed. This can be accomplished by rotating an inside door knob 85. The inside door knob 85 is nonrotatably attached to a spindle 86 which is rotatably mounted by substantially conventional construction in the case 11. An inside rollback 88 is nonrotatably attached to the spindle 86. Rotation of the spindle 86 and inside door knob 85 can be in either a clockwise or counterclockwise direction, so that an end 84 (see FIGURES 6 and 7) moves against a block 92 against tension of the spring 98, causing a cam 93 to push against the rollback link 74, in turn causing it to pivot about a pin 74 which mounts the rollback link 74 in the case 11. When this happens, the flange 73 will move in a direction from left to right against the head 75, as viewed in FIGURES 3 and 4, and in this way withdraws the latch bolt 18. When an outside rollback 88 is free, as shown in FIG- URE 3, it can be similarly rotated in one direction or another to move either the end 90 or 91 against the block 92 thereby to withdraw the latch bolt 18 in the manner just described.

The latch bolt 18 also can be withdrawn by rotating an outside knob 87 when the dead bolt 16 is withdrawn, but the door 24 still is closed. The outside knob 87 is nonrotatably attached to a spindle $6 which is rotatably mounted by substantially conventional construction in the case 11. An outside rollback 88 is nonrotatably attached to the spindle 86. The retraction of the latch bolt 18 by rotation of the outside knob 87 is the same as described above in connection with the rotation of the inside knob 85.

Either the inside knob 85 or outside knob 87 alternately could be a conventional handle device (not shown) with a conventional push-down thumbpiece or with a conventional push-in thumbpiece. In such a case, the movement of the thumbpiece would translate through appropriate mechanism to retract the latch bolt 18.

For yieldably holding the rock arm 40 in one position or another, there is provided a leaf spring secured to the block 35 by anchoring elements 111 and 112, so that a free end 113 of the leaf spring 110 can engage one side or the other of a projection 114 on the rock arm 40, as shown respectively in FIGURES 3 and 4.

As second means of locking the closed door against opening from the outside, mechanism is provided interconnecting the dead bolt 16 and its actuating means to the outside rollback 88. The dead bolt 16 and this interconnecting mechanism can be operated simultaneously by manipulation of the turn device 46 on the inside of the door 24. This can also be done by making use of the key-actuated mechanism 47 on the outside of the door 24.

The interconnecting mechanism consists primarily of a blocking slide 129, which engages a slot in the outside rollback 88', and a driving slide 135.

As shown advantageously in FIGURES 6 and 7, the blocking slide 129 has a tab 131 extending outwardly from one edge riding in a horizontal slot 132 in the outside wall 13 and a tab 133 riding in a horizontal slot 134 in the inside wall 12.

The driving slide 135 is guided for vertical reciprocation by a guide 136 extending from the inside wall 12 into a vertical guide way 137 in the driving slide 135, the guided relationship being shown in FIGURES 3, and 5. At the upper end of the driving slide 135 is an enlarged aperture 139 into which extends a pin 138 from the rock arm 40. At the lower end of the driving slide 135 is a drive arm 140, offset slightly toward the left, as viewed in FIGURES 3 and 4. The drive arm 140 is received in an opening 142 in the blocking slide 129. A diagonal drive cam face 141 interconnects the drive arm 140 with the main portion of the driving slide 135. The diagonal drive cam face 141 is adapted to cooperate with a driven cam face 143 which is, in fact, the righthand side of the opening 142, as viewed in FIGURES 3, 4, 6, and 7.

In operation, the parts occupy the positions shown in FIGURES 3 and 6. In this position, the dead bolt 16 is withdrawn and the rock arm 40 has been rotated clockwise, as viewed in FIGURES 3 and 4, to the limit of its movement. This results in elevating the driving slide 135 to the top of its position of movement. Likewise, in this relationship of parts, the blocking slide 129 is moved toward the left.

When the turn device 46 is rotated, thereby to rotate the actuator 48 and its rounded driver 54 in a clockwise direction, as viewed in FIGURES 3 and 4, the rock arm 40 will be rotated in a counterclockwise direction. Movement, as described, moves the free end 44 of the rock arm 40 arcuately downwardly, causing the driving slide 135 to move downwardly. When this happens, the drive cam face 141 on the driving slide 135 cams against the driven cam face 143 of the blocking slide 129, and the blocking slide 129 is by this action forced in a direction from left to right, as viewed in FIGURES 3 and 4, until the blocking slide 129 enters the slot 130, which extends radially inwardly from the periphery of the outside rollback 88. In this manner, the 'outside rollback 88' is anchored in position thereby preventing rotation of the outside knob 87. Hence, the latch bolt 18 is locked against operation by the outside knob 87. At the same time, and as the result of rotation of the rock arm 40, the dead bolts 16 has been extended to the locked position of FIGURE 4 and, hence, the door 24 is double locked.

Unlocking is accomplished by merely reversing rotation of the turn device 46, which results in rotating the rock arm 40 in a counterclockwise direction, as shown in FIGURES 3 and 4.

The driving slide 135 thereupon is lifted and the oblique portion of the drive arm 140 is moved upwardly through the opening 142. During this upward movement, an upper return cam track 144 on the driving slide 135 cams against the side 145 of the opening 142, thereby to force the blocking slide 129 from right to left, as viewed in FIG- URES 3 and 4, and out of engagement with the slot 130.

Needless to say, when the rock arm 40 is manipulated by operation of the key-actuated mechanism 47, thus acting upon the actuator 48 and the rounded driver 54, the outside rollback 88' can again be locked against movement by employment of the blocking slide 129 through the same interconnecting mechanism described above.

From the foregoing explanation, it will be understood that the lock can be readily double locked against opening from the outside by rotation of one or another of the actuating mechanisms; namely, the turn device 46 if the operation is accomplished from the inside of the door, or the key-actuated mechanism 47, if the operation is accomplished from the outside of the door.

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 inven- 6 tion, 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 mortise type lock including a case, a latch bolt reciprocatably mounted in said case, hand-hold means operatively mounted in said case including a rollback, an operating connection between said rollback and said latch bolt, an interlock for blocking rotation of said rollback, a turn device in operative engagement with said interlock, said interlock'including slide means slidably mounted, said slide means including a blocking slide member and a reciprocating driving slide member, said driving slide member having a slidable mounting on the case, oppositely facing cams on respectively opposite edges of said driving slide member sloping in a direction oblique relative to the direction of movement of said driving slide member, said cams being in sliding engagement with respective adjacent cams on said blocking slide member for reciprocatably driving the blocking slide member, said rollback having a slot therein in line with said blocking slide member when the rollback is in the position occupied when the latch bolt is extended, said slot being adapted to receive said blocking slide member in locked position, whereby said rollback is blocked by operation of said turn device.

2. In a mortise type lock including a case, a latch bolt reciprocatably mounted in said case, hand-hold means operatively mounted in said case including a rollback, an operating connection between said rollback and said latch bolt, an interlock for blocking operation of said handhold means, a turn device in substantial vertical alignment with said hand-hold means and in operative engagement with said interlock, said interlock including a blocking slide member slidably mounted in said case and a driving slide member having a reciprocating sliding mounting on the case in a position transverse relative to said blocking slide member, said rollback having a slot therein extending radially inwardly from the periphery and in line with said blocking slide member when the rollback is in the position occupied when the latch bolt is extended, said slot being adapted to receive said blocking slide member in locked position, and a driving connection between said turn device and said driving slide member, and drive means between said slide members comprising oppositely facing cams on respectively opposite edges of said driving slide member sloping in a direction oblique relative to the direction of movement of said driving slide member, said cams being in sliding engagement with respective adjacent cams of said blocking slide member for reciprocatably driving said blocking slide member whereby said rollback is blocked by said blocking slide member in response to operation of said turn device and said actuating means.

3. In a mortise type lock including a case, a dead bolt reciprocatably mounted in said case, actuating means for said dead bolt including a rocker rotatably mounted in the case, a connection between said rocker and said dead bolt, and a turn device in operative engagement with said rocker, a latch bolt reciprocatably mounted in said case, hand-hold means operatively mounted in said case including a rollback, an operating connection between said rollback and said latch bolt, and an interlock for blocking rotation of said hand-hold means, said interlock including a driving slide member having a reciprocating sliding mounting in said case and a blocking slide member slidably mounted in said case for movement in a direction transverse to said driving slide member, said rollback having a slot therein extending radially inwardly from the periphery and in line with said blocking slide member when the rollback is in the position occupied when the latch bolt is extended, said slot being adapted to receive said blocking slide member holding said rollback in locked position, said driving slide member having 7 8 a movable connection with said actuating means and a References Cited sflrive means between said members comprising oppostely UNITED STATES PATENTS acing cams on respectively opposite edges of said riving slide member sloping in a direction oblique relative 1,162,569 11/1915 Carlson 70 355 to the direction of movement of said driving slide mem- 5 1168725 1/1916 Hurd 70 150 X her, said cams being in sliding engagement with respee- 1188563 6/1916 Segrove 70110 tive adjacent cams on said blocking slide member wher 3,242,706 3/1966 Check 292 34 X by to move said blocking slide member into and out of engagement With said rollback by operation of said turn MARVIN CHAMPION Primal); Exammer' device and said actuating means. 10 J. R. MOSES, Assistant Examiner.

Claims (1)

1. IN A MORTISE TYPE LOCK INCLUDING A CASE, A LATCH BOLT RECIPROCATABLY MOUNTED IN SAID CASE, HAND-HOLD MEANS OPERATIVELY MOUNTED IN SAID CASE INCLUDING A ROLLBACK, AN OPERATING CONNECTION BETWEEN SAID ROOLBACK AND SAID LATCH BOLT, AN INTERLOCK FOR BLOCKING ROTATION OF SAID ROLLBACK, A TURN DEVICE IN OPERATIVE ENGAGEMENT WITH SAID INTERLOCK, SAID INTERLOCK INCLUDING SLIDE MEANS SLIDABLY MOUNTED, SAID SLIDE MEANS INCLUDING A BLOCKING SLIDE MEMBER AND A RECIPROCATING DRIVING SLIDE MEMBER, SAID DRIVING SLIDE MEMBER HAVING A SLIDABLE MOUNTING ON THE CASE, OPPOSITELY FACING CAMS ON RESPECTIVELY OPPOSITE EDGES OF SAID DRIVING SLIDE MEMBER SLOPING IN A DIRECTION OBLIQUE RELATIVE TO THE DIRECTION OF MOVEMENT OF SAID DRIVING SLIDE MEMBER, SAID CAMS BEING IN SLIDING ENGAGEMENT WITH RESPECTIVE ADJACENT CAMS ON SAID BLOCKING SLIDE MEMBER FOR RECIPROCATABLY DRIVING THE BLOCKING SLIDE MEMBER, SAID ROLLBACK HAVING A SLOT THEREIN IN LINE WITH SAID BLOCKING SLIDE MEMBER WHEN THE ROLLBACK IS IN THE POSITION OCCUPIED WHEN THE LATCH BOLT IS EXTENDED, SAID SLOT BEING ADAPTED TO RECEIVE SAID BLOCKING SLIDE MEMBER IN LOCKED POSITION, WHEREBY SAID ROLLBACK IS BLOCKED BY OPERATION OF SAID TURN DEVICE.

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