US1956388A - Doorlock - Google Patents

Description

April 24, 1934. L, KALlNA 1,956,388

DOORLOCK Filed Jan. 25, 1934 /A/l/E/VTE 0555 A2M/AM.

Patented Apr. 24, 1934 f T STATES .t ATE This invention relates to new and useful improvements in locks.

Many doors have panels of glass and many or" these doors which do not have panels of glass do have relatively thin panels of wood or even metal. It has happened that where the panels of doors are of glass or relatively thin material, a section of a panel has been removed, a hand inserted and the lock of the door operated from the inside to release the door and permit of its being moved to open position.

It is the object of the present invention so to construct a lock, that it will be impossible to operate the lock from the opposite side of the door from that upon which the lock `is mounted, even though a portion of the door panel adjacent the 4lock has been removed.

A feature of the invention resides in the provi- 'sion v'of a wspring vor gravity actuated movable `member which is normally moved by its spring "into vthe path of ya movable part of the lock to hold ysaid part against movement and thereby render the lock impossible of movement to door releasing position.

Another important feature'of the invention resides in a novel construction whereby the mechanisrn being set to prevent 'operation of the lock lportieri `of a door and jam -With a guard member 'bolt by the usual knob, the `lock is still lfree to be operated'by a'key which will ht the lock.

Still another feature of the `invention resides in anovel construction'andarrangement of parts, `whereby the invention may `be either built into va 4lock Vwhen the same is manufactured, or may "be incorporated into a lock as an attachment thereto after a lock has been completed.

Other vfeatures of the invention relate to certain novel and improved constructions, arrangements and combinations of parts, hereinafter described and particularly pointed out in the claims, 'the advantages of which will be readily understood'and appreciatedby those skilled in the art.

The invention will -be-clearly understood from the accompanying drawing illustrating the invention 'in its preferred form and `the following detailed description of the constructions therein shown.

yIn the-drawing,

Figure l is a view in elevation illustrating a 'lock constructed in accordance with the present finvention and one method of operating the same,

Figure 2 is a detail sectional View of the lock shown in Figure 1,

Figure 3 -is a-detail sectional view 'takenon the line 3 3 of EFigure 2,

Figure 4 is a detail perspective view of a portion of the mechanism,

yFigure 5 is a view in elevation lof a slightly modied form of the invention,

Figure 6 is a view partly 'in vsection taken at right angles to Figure 5, illustrating the form shown in said ligure,

Figure '7 is a rear view of a lock Vwith a portion thereof broken away, showing a still further modi- 'ed formof the invention,

Figure 8 is a view in elevation showing a still 'further modied form of the invention,

Figure 9 is a View in end elevation 4taken at 'right angles to Figure'S,

Figure l0 is a View partly broken away and partly in section of that form of the invention lshown -in VFigures 8 and 9,

Figure 11 is a -detail perspective view of `the latch plate employed in Figure 10,

'Figure 12 is a view in elevation showing a still 1 lfurther vmodified form Yof the invention,

Figure 13 is a transverse sectional VView taken Figure 14 vis afragmentary view in rear elevation illustrating that form of lock `shown in Figures l1 and 12,

Figure 15 is a-detail sectional view showing 4a attached to the jam, and;

Figure 16 is a perspective View of the guard member shown lin Figure 15.

The invention pertains particularly to means for locking an ordinary lock against operation from the 'inside'oi a door, or that side of the door upon which the lock is carried by means7 of vthe knob of the lock, yet at the same time permit, in certain lforms at least, the operation of the lock from the opposite side of the door lby a person with a key which properly fits the lock.

Referring to Figures 1 to 4, inclusive, reference numeral 2o, designates the lock casing and 21, designates the'knob. These parts are of conventional orm except that the shank of the knob 2l, is provided with an opening 22, as shown` in Figures 2 and 3. The reference numeral 23, designates a housing which may be secured to `the lock housing 20, by screws 24, and this 'housis formed from a single piece of metal suitably bent to provide two spaced walls 25, and 26, vconnected by an end wall 27, and side walls 28, -to form the housing. Slidably mounted in aligned openings in the walls 25, and 26,"there 'is a locking member 29, -herein villustrated as yin the form of a pin, and this locking member is adapted formovement into and out of engagement with the opening 22, in the shank lof the knob to prevent or permit operation of the knob 21. This locking member is normally held in engagement with the opening 22, by means of a spring 30, which is interposed between a washer 31, carried by the locking member 29, and the wall 25, of the housing 23. This locking member, as best illustrated in Figure 4, has a squared portion 31, which prevents its turning, and it is also provided with a notch 32. The locking member 29, slides through an opening 33, in a locking plate 34, which is slidably mounted within the housing 23, and is adapted to be moved so that one end Wall of the opening 33, will engage the notch 32, of the locking member 29, to. hold or secure the same out of engagement with the opening 22, in the shank of the knob 21.

This form of the device operates as follows. When the locking plate 34, is in the position in which it is shown in Figure 3, the locking member 29, will be held in its elevated position out of engagement with the opening 22, and the lock is free for operation either by its knob 21, or a key in the ordinary manner. If,- however, the plate 34, be moved to the left in Figure 3, the Spring 30, will force the locking member 29, into engagement with the opening 22, it being understood that the plate 34, will be disengaged with the notch 32, of the locking member 29, thus locking the knob against operation and thereby preventing operation of the lock by means of the knob 21.

In Figures 5 and 6, the device is of substantially the same construction as illustrated in Figures 1 to 4, except, however, that in the form of the invention shown in Figures 5 and 6, the housing 23, is so constructed that the locking member 29, carried thereby passes through an opening 40, in the lock casing and passes into the path of travel of the end 41, of the locking bolt 42. In Figure 7, the locking member 29, is shown in full lines in its raised position, in which position, it permits of the free movement of the locking bolt 42. In this figure, the locking member 29, is shown in dotted line position in the path of the locking bolt 42, in which position it prevents movement of the locking bolt 42, and consequently prevents opening of the ock.

In Figures 8 to 11, inclusive, there is shown a modified form of the invention, in which the housing 23, is carried by one end of a lock casing 43. In this form of the invention the knob spindle is provided with two recesses 44, and 45, which are diametrically opposed with respect to each other. These recesses are adapted to receive the locking member 29, to prevent turning o f the knob 21, of the lock. In this form of the invention the housing 23, is secured in position by means or" screws 46, and the locking member 29, is held in its retracted position by a latch plate 47, which is slidably mounted upon a screw or pin 48, which passes through a slot 49, therein, see Figure 11. This latch plate 47, has a slot 50, which has an enlarged portion 51, which enlarged portion 51, when positioned to receive the locking member 29, permits of free movement of the locking member into engagement with the notches 44, and 45. When, however, the plate 47, is moved downwardly as in Figure 10, the narrow portion of the slot 50, will engage in the notch 32 of the locking member 29, to hold the same in its retracted position against the action of the spring 30.

In Figures 12 to 14, inclusive, there is shown a still further modified form of the invention. In this form of the invention the lock is of the type wherein the locking bolts are carried by projections 60, of the lock housing 61, and moved vertically in Figure 12, into engagement with projections 62, of the keeper 63. As shown in the sectional view, Figure 13, these locking bolts are operated by the raising and lowering of the member 64, either by the operating knob, not shown, or by the key. In this form of the invention, the housing 23, is secured to the front face of the lock housing by screws 65, and the locking member 29, is so positioned that when released by the latch plate 34, it moves inwardly of the lock housing to position over the upper edge 66, of the member 64, and prevents vertical movement thereof, and hence prevents operation of the lock to releasing position.

In Figures 15, and 16, I have shown a guard member which is adapted to be carried by a door jam 70, and secured thereto by means of screws 71. The guard member consists of a right angular body portion having flanges 72, and 73, which is positioned with its ilange 73, against the trim strip 74.

In ordinary installations, it is only necessary to remove the trim strip 74, and insert a screw driver or similar tool in the space between the door and the jam into engagement with the bev- 105 elled face of the locking bolts whereupon the locking bolt may be moved to open or released position. When, however, the guard member is positioned upon the jam at the proper location, it will prevent the forcing of a tool into engagement with the lock bolt, as best illustrated in Figure 15, and thereby prevent opening the lock in the manner described.

It is to be noted that the construction of the device is, in each of its modied forms, such that it requires both hands to open the device when the lock is in its closed position. For eX- ample, one hand must be used to retract the locking member 29, the other hand being used to operate the latch plate or the knob which holds the locking member 29, in its retracted position. It will also be noted that the construction and arrangement is such that the movement of these two membsrs are in places at right angles to each other, which makes it practically impossible to operate the lock unless one positions oneself directly in front of it. By this construction and arrangement of parts, and this is a particular feature of my invention, it is impossible to operate the lock by removing a portion of the door panel adjacent the lock and passing the hands through the opening provided from the outside of the door to the inside thereof, since it is necessary, as before stated, to employ both hands to operate the lock, and in releasing the same move the lock member 29, and its latch plate in planes at right angles to each other.

While in each instance, the locking member 29, has been herein described and illustrated as being a spring pressed member, it is to be understood that in thosei forms of the invention sho-wn in Figures 1 to 7, inclusive, or in any form where the locking member is mounted in a vertical plane, the same may be gravity operated instead of spring operated as desired. I prefer, however, to operate said locking member by a spring instead of by gravity.

The invention has been herein illustrated in its preferred forms. It is to be understood, how- 150 ever, that it may be constructed in other forms without departing from the spirit thereof.

Having thus described the invention, what is claimed as new and What it is desired to secure by Letters Patent of the United States, is:

1. In a lock for doors, a notched pin, a spring for moving said notched pin normally into the path of movement of a moving part of said lock to prevent operation of the lock from a locked to a releasing position, and means for engagement with the notch of said notched pin to hold the notched pin out of the path of travel of the said movable part of the lock to permit of free movement to and from its locked and unlocked positions, said last mentioned means comprising a manually operated sliding plate, said sliding plate having an opening therein through which said notched pin moves, one side edge of said opening being adapted to be received in the notch of the notched pin to hold the same against action by said spring.

2. In a lock of the type which includes an operating knob, a pin arranged radially of the axis of said knob and adapted to engage in a recess in the shank or spindle of the knob to prevent operation of the lock by the knob, a spring for normally forcing the pin into engagement With said recess in the knob shank or spindle, and means movable into engagement with said pin to hold it out of engagement with the recess in the shank or spindle of the knob to permit free operation of the lock by said knob.

3. In a lock of the type which includes an operating knob, a pin arranged radially of the axis of said operating knob, and adapted for engagement in a recess in the shank or spindle oil said knob to prevent operation of the lock by said knob, a spring for normally urging said pin into engagement with the recess in the shank or spindle of said knob, and a sliding plate arranged at right angles to said pin and having an opening through which said pin is adapted to move, said sliding plate being movable into engagement with said pin to hold it out of engagement with said recess to permit free operation of the lock by the operating knob.

4. In a lock for doors, a locking member movable into and out of engagement with a movable member of said lock to prevent operation of the lock from locking to releasing position, and means for holding said locking member in its inoperative position, said last mentioned means comprising a latching plate movable in a plane at right angles to said locking member and provided With an opening through which the locking member operates.

5. In a lock for doors, a locking member in the form of a notched pin movable into and out of engagement with a movable part of the lock, and a latch plate for holding said locking member in its inoperative position, said latch plate having an opening therein through Which the locking member moves when moving to its operative or inoperative position, one of the side edges of said opening being adapted to be received in the notch of the locking member to hold the same in its inoperative position.

LOESER KALINA.

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