US2756300A - Lock controlled switch - Google Patents

Description

July 24, 1956 A. J. THlBERv'iLLE LOCK CONTROLLED SWITCH 2 Sheets-Sheet 1 Filed Nov. 30, 1953 5L Fig. 6

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United States Patent LOCK CONTROLLED SWITCH Arthur J. Thiberville, New Orleans, La. Application November 30, 1953, Serial No. 395,011 1 Claim. (Cl. 200-61.67)'

This invention relates in general to improvements in switch mechanisms, and more specifically to an improved lock controlled switch.

The primary object of this invention is to provide an improved switch construction which is mounted in combination with a lock so as to be actuated in response to actuation of such lock, whereby the manipulation of the lock may result in the automatic controlling of an electrical circuit.

Another object of this invention is to provide an improved lock controlled switch which is of such a nature whereby the same may be conveniently mounted on a door with the switch being in a concealed relation beneath the lock structure so that the switch is hidden from on-lookers and at the same time, protected by the latch construction.

A further object of this invention is to provide an improved lock controlled switch which is of such a nature whereby a conventional switch may be combined with a conventional lock through a minimum of alteration of such lock so as to produce a highly novel, effective and desirable lock controlled switch.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming an part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a fragmentary horizontal sectional view taken through a door provided with the lock controlled switch which is the subject of this invention and shows the general relationship of the lock controlled switch with respect to the door when the door is in its locked position;

Figure 2 is an enlarged horizontal sectional view taken through the switch of Figure 1 and shows the general construction thereof;

Figure 3 is a fragmentary horizontal sectional view similar to Figure l and shows the lock with the latch mechanism thereof in its ineffective position;

Figure 4 is a rear elevational view of the lock as viewed with the back plate thereof removed and shows the manner in which the bolt thereof has been modified for the reception of the switch;

Figure 5 is an enlarged perspective view of the bolt and the control arm therefor, the beveled rear surface of the bolt and the associated pin thereof being clearly shown; and

Figure 6 is a transverse vertical sectional view taken substantially upon the plane indicated by the section line 66 of Figure 5 and further shows the configuration of the recess in the bolt for the reception of the switch.

Referring now to the drawings in detail, it will be seen that there is illustrated in Figure 1 a door panel 10. It will be noted that the door panel 10 is of the type generally utilized for locking doors of shops and the like and is extremely thick as compared to conventional doors. The door panel 10 has a free edge thereof seated in a rectangular rabbet 12 of a door jamb construction 14. Carried by the door panel 10 and the door jamb construction 14 is a conventional lock which is referred to in general by the reference numeral 16.

The lock 16 includes an elongated housing 18 which is secured to the inner surface of the door panel 10 by suitable screws 26. Mounted within the housing 18 for sliding movement to one side thereof is an elongated bolt 22, the bolt 22 passing through an opening 24 in one side wall of the housing 18. The bolt 22 is selectively received in a keeper 26 through an opening 28 therein, the opening 28 being opposed to the opening 24. The keeper is retained in place by suitable screws 30.

The lock 16 further includes an inner locking cylinder 32 which is secured within the confines of the housing 18 through the use of a mounting plate 34 which is suitably secured to the inner surface of the housing 18. The locking cylinder 32 has connected thereto an actuating shaft 36 which extends through a rear cover plate 38 of the housing. The rear cover plate 38 is removably secured to the housing 18 and conceals the latch mechanism mounted therein. The actuating shaft 36 extends through a relatively large bore 40 which passes transversely through the door panel 10. Mounted in the bore 40 at the front side of the door panel 10 is a forward locking cylinder 42. The forward looking cylinder 42 is retained in place by a pair of elongated fasteners 44 which are carried by a mounting plate 46 which is disposed within the rear portion of the bore 40. Through the use of the actuating shaft 36, it will be seen that either of the locking cylinders 32 and 42 may be used for selectively controlling positioning of the bolt 22.

Carried by the actuating shaft 36 for movement there by is a lever 48 which is, in turn, connected to an arm 50. The arm 50 is pivotally connected to the bolt 22 by a pin 52 rigidly carried by the bolt 22. Also carried by the pin 52 is a spring 54 which has a first arm 56 thereof connected to the am 50. A second arm 58 of the spring 54 engages a vertical wall of a recess 60 in the bolt 22. The recess 69 receives an end portion of the arm 50 and the spring 54 is utilized to retain the arm 50 and the bolt 22 in preselected positions.

It will be understood that the above described structure of the lock 16 is that of a conventional lock now readily obtainable on the market. The lock 16 is specifically designed for use with relatively thick door panels, such as the door panel 10 and has heretobefore had as its primary and sole purpose to retain door panels, such as the door panel 16, in latched positions, as desired.

Referring now to Figure 2 in particular, it will be seen that there is illustrated a push-button type switch which is referred to in general by the reference numeral 62. The push-button type switch 62 includes a cylindrical housing 64 which terminates at its open end in an outwardly directed annular flange 66. The annular flange 66 is provided with circumferentially spaced openings 68 which are intended for the reception of securing fasteners.

The housing 64 includes a bottom wall 70 which has secured to the outer surface thereof in insulated relation thereto a pair of terminals 72. The terminals 72 have, in turn, connected thereto a pair of opposed contacts 74.

Mounted within the housing 64 and projecting out of the open end thereof is a button 76. The button 76 is guidingly received within the housing 64 and has secured thereto a shaft 78. The shaft 78 passes through the closed end 70 of the housing 64 and is supported in insulated relation with respect thereto. Removal of the shaft 78 is prevented by a locking clip 80. The button 76 is urged to an outermost position by a spring 82 mounted within the housing 64.

Carried by the shaft 78 is an insulated sleeve 84. The insulated sleeve 84 is provided with an annular contact ring 86 which is selectively engageable with the contacts 74 to complete the circuit between the terminals 72. It will be understood that the structure of the push-button type switch 62 is conventional and not in itself a part of this invention. It will also be understood that the position of the contact ring 86 maybe varied so as to permit the closing of the circuit between the terminals 72 either when the button 76 is depressed or when it is in the position shown in Figure 2.

The push-button type switch 62 is mounted on the housing 18 by fasteners 88, the fasteners 83 being rigidly secured to the back plate 38. The switch 62 is disposed in an opening 90 in the rear face of the door panel 10, the opening 90 underlying the housing 18 and the switch 62 being concealed and protected thereby. Connected to the terminals 72 are wires 92 which pass through an elongated bore 94 in the door panel 10. It will be understood that the bore 94 extends longitudinally of the width of the door panel 10 and exit therefrom adjacent the hinged edge (not shown) thereof. The electric wires 92 will then pass through the opposite side of the jamb structure 14 and be connected to an electrical circuit in any desired manner.

As is best illustrated in Figure 3, when the bolt 22 is in its ineffective position, the rear surface thereof is in engagement with the button 76 and retains it in its depressed position. In Figure 1, it will be seen that the bolt 22 is in its effective position, and the button '76 is in extended position. Thus, it will be seen that when the bolt 22 moves between its ineffective and effective positions, the plunger 76 is operated to cause actuation of the switch 62.

It will be noted that the recess 60 in the bolt 22 is of a size to receive the push-button 76. However, in order to facilitate the inward movement of the bolt 22, it has been necessary to bevel both the rear end of the pin 52 and the outer portion of the recess 60 as at 96 and 98, respectively, as viewed in Figures 5 and 6. Thus, when the bolt 22 moves from its effective position to the ineffective position, the rounded portion of the button 76 will ride up over the rear end of the pin 52 and the beveled end portion 98 of the recess 60 to engage the rear surface of the bolt 22, as is illustrated in Figure 3.

It will be understood that the wires 92 may be connected in any desired electrical circuit which may be actuated by the switch 62. For example, when the switch 62 is of the construction illustrated in Figure 2, the switch 62 may be utilized to control a burglar alarm system. It will thus be seen that when the bolt 22 is in its effective position, the switch 62 will be in its closed position, and the burglar alarm system will be energized. When the shop owner opens the shop through the movement of the bolt 22 to its ineffective position, the switch 62 is automatically opened with the result that the burglar alarm system is automatically cut off. On the other 5 hand, the switch 62 may be of the type Where the annular contact ring 86 is disposed remotely from the terminals 72 with the result that it is necessary to depress the button'76 in order to close the switch. With the switch 62 so constructed, the switch could be utilized in controlling an air conditioning system, lights, etc. Thus, it will be seen that when the bolt 22 is moved to its ineffective position, the switch 62 would be closed to cause the operation of the air conditioning system. Then, when the shop is closed, the bolt 22 will be moved to its effective position and the switch 62 opened and the air conditioning system turned ofi. It will be understood that many other uses may be found for the lock controlled switch which is the subject of this invention.

Although the door panel 1 0 has been illustrated and described as being extremely thick, it is to be understood that the lock 16 may be utilized with conventional thickness door panels. Also, it is not necessary that the wires from the switch 62 pass through bores in the door panel 10. If desired, the wires may be passed through and concealed in molding secured to the surface of the door panel to which the lock 16 is attached.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modificationsand changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claim.

What is claimed as new is as follows:

For use in combination with a relatively thick panel, a lock controlled switch, said lock controlled switch comprising a lock mechanism including a housing securable to a panel with a rear face in engagement with a panel, a bolt slidably carried by said housing, a switch carried by said rear face and projecting rearwardly therefrom for positioning in an opening in a panel, means connecting said switch to said bolt for actuation thereby, said switch being of the push-button type said means including a button of said switch, said bolt having a recess in a rear surface thereof, an arm receivable in said recess for holding said bolt in a selected position, a pin carried by said arm having spring means engaged thereabout for holding said arm in engagement with said bolt, said pin and said bolt having bevelled surfaces forming cams for engagement with said button.

References Cited in the file of this patent UNITED STATES PATENTS 1,323,729 Tracz Dec. 2, 1919 1,674,570 A. Re June 19, 1928 FOREIGN PATENTS 2,094 Great Britain Mar. 19, 1903 of 1903 38,648 Switzerland Dec. 21, 1906 629,952 France Nov. 21, 1927

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