US2475757A - Door lock control - Google Patents

Description

y J. A. SALDANA 2,475,757

, DOOR LOCK CONTROL Filed July 8, 1946 1 2 Shets-$heet 1 Jfl. szdam,

INVENTOR.

July 12, 1949.

Filed July 8, 1946 J. A. SALDANA I DOOR LOCK CONTROL 2 Sheets-Sheet 17 7' 7' ORA/E V6.

Patented July 12, 1949 UNITED STATES T-ENT. OFFICE 1 Claim.

My present invention relates to an improved door lock control and more particularly to a control mechanism whereby two or more doors may be simultaneously locked or unlocked by the movement of a single handle by manual operation.

The control mechanism of my invention is particularly adapted for use in homes, hospitals, or other buildings wherein two or more doors are provided for access to a room as for instance a bath room. It is the primary purpose of my invention to provide a control as will be hereinafter described wherein the user of the room may by a single manipulation of one handle lock both doors.

I also provide in addition to the control mechanism an emergency control by means of which the doors may be unlocked from outside the room if necessary.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention according to the best mode I have thus far devised but it will be understood that various changes and alterations may be made in the exemplified structure within the scope of the appended claim.

Inthe drawings:

Figure 1 is an assembly view showing two doors to a room withthe dual locking mechanism for the doors.

Figure 2 is a longitudinal vertical sectional view of one of the bolts and its associated handle control box.

Figure 3 is a transverse sectional view taken at line 33 of Figure 2.

Figure 4 is a longitudinal sectional View of the other handle control box.

Figure 5 is a transverse sectional view thereof at line 55 of Figure 4.

Figure 6 is a horizontal sectional view of the corner control box.

Figure '7 is a vertical sectional view thereof at line 7-1 of Figure 6.

Figure 8 is an enlarged vertical transverse section through the emergency control box.

Figure 9 is a section on line 9-9 of Figure 8.

Referring now to the drawings in detail, I have illustrated a room 2 which may be a bath room or any other room in a building having a plurality of doors and requiring privacy.

The room 2 illustrated has walls 4 and doors 6 and 8 are shown in the respective walls of the room, and provided with the conventional door knobs 9. The corner of the room I0 is formed by the partitions l2 and I4, and the control mech- 2 anism of my invention is. shown as mounted in and associated with the wall partitions, it being understood that. the mechanism is preferably mounted as the building construction progresses although it is possible to mount the mechanism in existing structures.

A control box [.6 is. mounted in the wall l2 and is provided with an attaching plate I! for securing the box to the partition I2. In this box is an operating shaft l8 having an end protruding through the partition [2 and carrying a handle 20 which can be secured thereon by screws 2i. A lever 22 is mounted on and is rotatable with the shaft and has an. upper and lower yoke 23 into which are pivotally connected the links 24 and 30.

The link 24 is. formed with an internally threaded collar 28; receiving and retaining the rod 28. The link 30 has a collar 32 engaging a rod 34 having a bolt 36 slidable in gu de 38 which is secured to the door jamb by screws 49.

The rod 28 is. extended ow a corner box 50 and engages an internally threaded collar 42 on a link 44, and this link is pivotally connected with the angle, lever or pivot plate .46 which plate is. pivotally secured as at 48 in the corner box 58. Attachingplate 52 of the box is secured at 5Ato the partitions. l2 and M at the corner formed thereby.

It is to be understood that the mechanism thus far described is so located that the operating handle 20 is placed where it can easily be actuated by a person adjacent a door to be locked or unlocked. A similar handle control mechanism can be located adjacent to the other door but this mechanism is disposed so that the mechanism thereof is inverted as compared with that in the box IE. This second handle control mechanism includes a box 63 adapted to be attached to the partition I as indicated at 62 and is provided with a shaft 64 corresponding to the shaft 18. The shaft 64 has a handle 65 joined thereto and located within the room adjacent to the door 8, so that by turning the handle, shaft 64 can be rotated or oscillated. This shaft 64 has an arm 66 extending upwardly therefrom provided with a yoke or fork at its upper end in which a link 68 is pivotally mounted. A collar ill couples one end of this link to a rod 12 which corresponds with rod 23 and extends to and is pivotally joined to plate 46 by a collar 14 carried by a link 16. The other end of the link 68 is joined at E8 to a bolt slidable in a guide 82 similar to guide 38 and similarly secured in the jamb of door 8 and positioned where it can engage the door 8 when said door is closed. A handle 65 is secured to the shaft 64 and by means thereof said shaft can be rotated partly in one direction or the other so as to cause the arm 66 to push or pull the rod 12 and thereby transmit motion through the angle lever or pivoted plate 46 to rod 28 and the bolt 35 through the mechanism contained within the box l6 which has already been described. Operation of the handle 20 will similarly actuate both bolts either to simultaneously unlock the doors or to lock them after the doors have been closed.

In addition to the door operating mechanism there is provided an emergency control accessible from a suitable point outside of a room in which the handles 20 and 65 are located. This emergency control includes a box 85 which is located in a partition, such as M and has a normally closed and locked door 86 which can be reached from a point outside of the room in which the handles are located. In this box the knob 88 having a stem 90 which is slidable within guide slots 92 and is welded or is otherwise fixedly joined to rod 12 or to rod 28 or other parts actuated by the handles 20 and 65, in case of emergency, the door 86 can be opened or broken, knob 88 grasped and pressed to the right or to the left and motion thus transmitted to the rods for the purpose of shifting the bolts and unlocking the doors.

An added feature can be the provision of an electric lamp located outside of the room containing handles 20 and 65. This lamp indicated at 94 can be located in a house circuit and by means of a movable switch member 96 carried by one of the rods of the apparatus, such as rod 28, the circuit to the lamp will be closed When the doors are locked, thereby indicating to persons outside of the closed room that the room is occupied.

It will be seen that the dual door control mechanism may with facility be installed and used wherever privacy and dual door control is desirable and the mechanism embodied in my invention will provide troublefree means for carrying out such a purpose. The linkage is so designed that little physical effort is required to operate the linkage and a positive and efiicient control is thus provided. It will be obvious that the mechanism of my invention is not confined 4 in use to corners or rooms or to two doors, and may well be installed in other structural arrangements.

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

A dual door control for oppositely hinged doors spaced apart by a partition comprising a bolt slidably mounted for reciprocation in each end of the partition, a link fixedly connected at one end to the inner end of one bolt, an operating control box mounted inside the partition, the link being extended into said box, a lever fulcrumed at its center within the box and pivotally connected at one end to the link, an operating shaft extending from the lever and outside the partition for swinging the lever in either direction, a series or fixedly connected links pivotally connected at one end to the other end of said lever for movement in one direction simultaneous with movement of the first link in an opposite direction, a direction changing control box mounted within the partition and into which the other end of said series of links extends, a pivot plate within the direction changing control box and to which said other end of the series of links is pivotally connected, a second series of fixedly connected links pivotally connected at one end to the pivot plate and fixedly connected at the other end to the other bolt, a second operating control box mounted inside the partition and past which said second series of links is extended, a lever extending from the second operating control box and pivotally connected to said second series of links, and an operating shaft for the last named lever extending outside the partition.

JUAN ANGEL SALDANA.

REFERENCES CITED The following referenlces are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 779,173 Merritt Jan. 3, 1905 1,133,659 Page Mar. 30, 1915 1,136,141 Kelley Apr. 20, 1915 2,173,148 Anderson Sept. 19, 1939 2,413,025 Marine Dec. 24, 1946

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