US2638772A

US2638772A - Locking bolt and actuating and anchor releasing means therefor

Info

Publication number: US2638772A
Application number: US174501A
Authority: US
Inventors: David A Ramler
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-07-18
Filing date: 1950-07-18
Publication date: 1953-05-19
Anticipated expiration: 1970-05-19

Description

May 19, 1953 D. A. RAMLER 2,638,772

LOCKING BOLT AND ACTUATING AND ANCHOR RELEASING MEANS THEREFOR Filed July 18, 1950 2 Sheets-Sheet 1 Ezga.

D. A. RAMLER May 19, 1953 LOCKING BOLT AND ACTUATING AND ANCHOR RELEASING MEANS THEREFOR 2 Sheets-Sheet 2 Filed July 18, 1950 Patented May 19, 1953 OFFICE LOCKING BOLT AND ACTUAT I-NG AND ANCHOR It-ELEASING MEANS THERE- FOR David A. Ramler, Brookline,v Mass.

Application July 18, 1950, Serial No. 174,501

7 Claims. 1

My present invention relates to door locks and particularly to a lock which has its bolt normally held against being retracted from its locking position by a bolt anchor releasable as an incident to bolt retraction by means other than the outside handle.

While security requirements vary considerably, there is a real demand for a simple and. strong lock in which the bolt is normally anchored against retraction by means of the outside handle and which is otherwise adapted for normal usage. The principal objective of this invention is to provide a door lock that will meet such general requirements.

In accordance with my invention, I provide a lock consisting of a support for a bolt that is movable between an exposed. looking position and a retracted unlocked position and a bolt anchor operative when the bolt is in looking position but rendered inoperative as an incident to the unlocking of the door from the outside as with a key or by turning the inside handle. The outside handle is independently connected to the bolt so: that it can not be turned. to retract the bolt untii the bolt anchor has been rendered inoperative.

Such a lock is well adapted tomeet various security requirements for the bolt anchor may not only be positioned inoperatively by electricall-y operated means but such means also may be used to hold the bolt retracted.

The connection between the outside handle and the bolt may also be employed to hold the bolt retracted and this feature is of advantage since, when controlled by a latch operated. release, engageable with the strike plate, the door is automatically locked when shut.

In the accompanying drawings, I have shown an. illustrative embodiment of my invention from which these and other of its. novel features and advantages will be readily apparent.

In the drawings:

Fig. 1 is a fragmentary View of the outside of a door equipped with a lock in accordance with my invention,

Fig. 2 is a partly sectioned view showing the lock from the inside and the door closed,

Fig. 3 is an elevation of the lock with themside handle and cover plate removed,

Fig. 4 is a like view but with the inside support wall removed,

Fig. 5 is a View, similar to Fig. 4, but partly sectioned to show the position of the Parts. when the bolt is in its locking position,

Fig. 6 is a view, similar to Fig. 5, but showing 2 the position of the parts when the bolt is retracted,

Figs. 7 and 8 are sections along the lines l-'i and 8-8, of Figs. 3 and 4, respectively, and,

Fig. 9 is a partly sectioned elevation showing a modification of my invention.

In the embodiment of my invention shown in the drawings, I have indicated a door Ill recessed to receive the lock housing, generally indicated at H. The front wall l-Z of the housing H is of substantial thickness and is apertured to slidably support the bolt 13 and to provide a stop l4 engageable by the bolt shoulder 15 to limit its outer or looking position into which the bolt is yieldably urged by the spring I6, but which yields to enable the bolt to be retracted into its unlocked position, see Figs. 5 and 6. At I1, I have indicated a strike plate apertured to receive the bolt 13 when in its locking position and the door I0 is closed. The outer side wall 18 of the housing H has a pair of spaced parallel guides 19 to assist in the proper support of the bolt [3.

I provide the bolt t3 with a slot 20 extending forwardly a substantial distance from its rear end and communicating with a vertical cylindrical bore 2|, the diameter of which is. greater than the width of the slot 20. The bore 21, when the bolt is in its locked position, receives the bolt anchor 22 which is preferably in the form of a rod slidably mounted in the housing wall I2 and yieldably urged towards its bolt anchoring or first position. by means of a spring 23.

My bolt [3 includes a lever 24 pivotally supported as at 25 in the slot 2|] and which has, adjacent its rear end, a shoulder 26. Below the rear end of the lever 24, the bolt slot 213 is bridged as at 2'! to provide a shoulder against which the spring l6 works and which establishes a seat for the spring 28 yieldably urging the rear end of the lever 24 upwardly against the stop 29 as shown in Fig. 5. The lever 24 is of sufficient length so that its front portion extends forwardly into the bore 2| and preferably it is so formed that its front and rear portions are disposed at an angle to each other so that in its position shown in Fig. 5, the front portion extends downwardly and forwardly under the bolt anchor 22 and its rear portion is substantially flush with the upper edge of the bolt 13 while in its Fig. 6 position, said front portion is flush with said upper bolt edge.

From. the foregoing and from a consideration of Figs. 5 and 6, it will be appreciated that the bolt IS, in its locking position, is positively retained operation, I secure to the outer housing side wall I8 any conventional key operated lock unit 30 having a key rotated cylinder cam 3| disposed above but adjacent the lever shoulder 26.

At 32, I have indicated an inside wall or support which is anchored by screws to the inset front wall projection 33 and to the

studs

34, 35, and 36, with the stud 34 also serving, as an anchor for the spring I6. Coaxial with the cylinder cam 3| is a hollow sleeve Ell extending through the support Wall 32 with its head flange 38 disposed adjacent the cylinder cam 3I. The sleeve 31 receives a spindle 39 within it while a ring 49 fits over it. The

parts

31, 39 and 49 are interconnected thereto by a pin 4| locked in place by a ring 42. The spindle 39 is rotated, when the handle 43 is released, by a coiled return spring 44 anchored to the stud 35. I secure a cover 45 to the front Wall I2, the door III and to the

studs

34, 35 and 36 and through it extends the spindle 39 to receive the handle 43.

In order that the door I may be unlocked by turning the key of the unit 39 or the handle 43, I provide the head flange 38 with an arm 46 having a shoulder 4'! and an ofifset catch 48. The shoulder 41 is disposed to be engaged by the cylinder cam 3| so that the catch is swung between its Fig. and 6 positions when either said cam or the handle 43 is turned. It will be appreciated from a consideration of Figs. 5 and 6 that as the catch 48 swings, it first depresses the lever 24 thereby moving the bolt anchor 22 into its inoperative position and then engages the lever shoulder 26 to draw the bolt I3 into its unlocked position. The usual requirements are for a door to have a handle on the outside and such is indicated at 49 having its spindle 5!! extending through the side wall I8 and the support wall 32 where it is anchored to the ring 5I by the pin 52. The ring 5| includes an arm 53 connected to the screw for the stud 34 by the return spring 54 and an arm 55. The pin is held in place by a cap 56.

In order that the bolt I3 may be retracted by turning the outside handle 49. I mount on its spindle 50 a link 51 that is free to turn independently thereof and having a stud 58 disposed to extend through the arcuate slot 59 in the support wall 32 for engagement by the arm 55. Pivotally connected to the bolt I3 and to the link 57 is a second link 69. In the locking position of the bolt I3, the

links

51 and 60 are partially jackknifed but when the bolt is retracted, said links are so straightened as to constitute a single link connection between the spindle 49 and the bolt I3. The stud 36 prevents the links from swinging too far beyond center and the links are also under the influence of the spring 6 I.

The linkage just described is, of course, moved whenever the bolt I3 is retracted by turning the key or the inside handle 43 and also is operative to enable the bolt I 3 to be retracted by the outside handle 49 when the bolt anchor 22 is inoperatively positioned. Such linkage is preferred when means for holding the bolt I3 in its unlocked position are desired but such linkage requires the use of means to release the bolt I3 when the door I!) is closed.

As a preferred embodiment of such bolt release means, I have shown front wall projection 33 as formed with a passageway slidably supporting a latch 62 adapted to be engaged and forced inwardly by the strike plate IT. The latch 62 has a stem 63 extending freely through the seat 64 between which and the latch 62 is located the latch return spring 65. Mounted on the stem 63 and confined between

stops

66 and 61 fo limited sliding movement relative to the stem 63 is a carrier 68 influenced by a spring 99 seated between it and the stop 66. I provide the carrier 68 with a pivotable trip I9 yieldably backed by the spring II. I provide the link 57 With a shoulder '12 which, when the bolt I3 is held in its retracted position, is disposed to be engaged and rotated by the trip 19, thereby to rotate the linkage sumciently to enable it to jackknife when the latch 62 is depressed, so that the spring I5 becomes operative to seat the bolt I3.

For many uses, it is desirable to have electrically operated means to release the bolt anchor 22 from Within the area protected by the lock and my use of a bolt anchor 22 within the lock housing I2 is well adapted to be thus operated. For that purpose, I mount in the housing II, an electromagnet unit 13 fast on the stem M of which is a collar I5 receiving one end of a bell crank lever 16 pivotally mounted on the housing front wall I2. The other end of the bell crank lever I6 engages a recess H in the bolt anchor 22. The cirout to the electro-magnet unit 73 is indicated at T8 and its switch (not shown) may be located where desired.

If desired, the bolt I3 may be provided with a second recess 79, in Fig. 9, located to receive the bolt anchor 22 when the bolt I3 is retracted into its unlocked position thereby to provide means for automatically holding the bolt I3 unlocked until the electromagnet unit 13 is again energized. I have also shown the bolt I3 as having a bore to receive the hardened steel end 89.

From the foregoing, it will be appreciated that locks in accordance with my invention are well adapted to meet a wide range of security conditions for the door equipped therewith can be readily opened from the inside by means of the inside door handle and can also be opened from the outside as by means of a key. It can not,

however, be opened by means of the outside handle unless the bolt anchor is retracted as by use of the key, turning the inside handle, or by remote control as by energizing the electromagnet unit. At the same time, the bolts of my locks may be automatically held open when retracted by any of the bases of control.

What I therefore claim and desire to secure by Letters Patent is:

1. A door lock comprising a support, a bolt carried by said support for movement between an exposed locking position and a retracted unlocked position, a bolt anchor carried by said support to slide at right angles to the bolt axis between operative and inoperative positions, said bolt including a shoulder engageable by said anchor when said bolt is in its locking position and said anchor is in its operative position. a member pivotally carried by said bolt for movement between a first position and a second position and engageable with said anchor, and a bolt retracting unit to actuate said member from its first to its second position to move said anchor into its inoperative position and said member in its second. position operatively connecting said bolt to said unit.

2. A door lock comprising a support, a bolt carried by said support for movement between an exposed locking position and a retracted unlocked position, a bolt anchor carried by said support to slide at right angles to the bolt axis between operative and inoperative positions, said bolt including a shoulder engageable by said anchor when said bolt is in its locking position and said anchor is in its operative position, a member pivotally carried by said bolt for movement between a first position and a second position and engageable with said anchor, a key operated unit, a handle unit, said units being located on opposite sides of said support, and means connecting said units to said member and operable on the actuation of either unit to actuate said member from its first to its second position to move said anchor into its inoperative position and said member in its second position operatively connecting said bolt to said unit.

3. A door lock comprising a support, a bolt carried by said support for movement between an exposed locking position and a retracted unlocked position, a bolt anchor carried by said support to slide at right angles to the bolt axis between operative and inoperative positions, said bolt including a shoulder engageable by said anchor when said bolt is in its locking position and said anchor is in its operative position, a member pivotally carried by said bolt for movement between a first position and a second position and engageable with said anchor, a bolt retracting unit to actuate said member from its first to its second position to move said anchor into its inoperative position and said member in its second position operatively connecting said bolt to said unit, and electrically operated means carried by said support to move said anchor into its inoperative position independently of said member.

4. The door latch of claim 3 in which the bolt has a second shoulder disposed to receive the anchor when the bolt is in its retracted position.

5. A door lock to be mounted in a door in desired relation to a strike plate, said lock comprising a support, a bolt carried by said support for movement between an exposed locking position and a retracted unlocked position, a bolt anchor carried by said support to slide at right angles to the bolt axis between operative and inoperative positions, said bolt including a shoulder engageable by said anchor when said bolt is in its locking position and said anchor is in its operative position, a member pivotally carried by said bolt for movement between a first position and a second position and en-- gageable with said anchor, a bolt retracting unit to actuate said member from its first to its second position to move said anchor into its inoperative position and said member in its second position operatively connecting said bolt to said unit, and means operable to hold said bolt in its retracted position and comprising first and second links, a pivot interconnecting said links, pivotal connections between said first link and said bolt and said second link and said support, and a stop carried by said support, said links being jack-knifed in the locking position of said bolt and in the retracted position thereof being so straightened that said pivot is located on the opposite side of said center line between said pivotal connections and said second link is in engagement with said stop, a latch carried by said support for engagement with said strike plate and operable by such engagement, and a connection between said latch and said second link to initiate the jack-knifing of said link.

6. The door latch of claim 5 and a handle, said handle being co-axial with the pivotal connection between the second link and the support, and a connection between said handle and said second link to operate only in a bolt retracting direction.

'7. A door lock comprising a support, a bolt carried by said support for movement between an exposed locking position and a retracted unlocked position, a bolt anchor carried by said support to slide at right angles to the bolt axis between operative and inoperative positions, said bolt including a shoulder engageable by said anchor when said bolt is in its locking position and said anchor is in its operative position, a member provided at its rear end with a shoulder and pivotally carried by said bolt for movement between a first position and a second position and engageable with said anchor, a key operated DAVID A. RAMLER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Re. 22,766 Spinello June 11, 1946 535,791 Dies Mar. 12, 1895 656,808 Carleton Aug. 28, 1900 664,422 Moore Dec. 25, 1900 990,225 Cebulla Apr. 25, 1911 1,286,344 Kenneweg Dec. 3, 1918