US1179042A - Lock. - Google Patents

Description

I. NI. RONALTER & I. P. BAUBY.`

LUCK.

APPLICATION FILED APR. I2. |915.

1,179,042. Patented Apr. 11,1916.

EMEQ..

atten/whom AJOSEPH M. RONALTER AND JOSEPH P. BAUBY, 0F WATERBURY, CONNECTICUT.

LOCK.

Specicatiori of Letters Patent.

, Patented Apr. 11, 1916.

'Application ined April i2, i915. 4 serial ivo. 20,858.

To all whom t may concern:

Be it known that we, JOSEPH M.`RONAL TER and JOSEPH P. BAUBY, citizens of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Locks; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Qur invention relates to improvements in locks and latches, more particularly to the former.

The object of the invention isto provide an extremely simple and inexpensive look having improved means for retarding a key inserted therein, thus preventing easy removal of said key by slamming of the door, or from other causes.

To this end, the invention tain novel features of construction and combination of parts hereinafter described and claimed In describing the invention, we shall referv to the accompanying drawing wherein like reference characters designate correspond-l ing parts throughout the several views and wherein;

Figure 1 is a vertical longitudinal section of a lock constructed in accordance with our invention, the bolt thereof being shown in retracted position; Fig. 2 is a view similar to Fig. 1 but illustratingy only the lower portion of the lock, the bolt in this view being projected; Fig. 3 is a horizontal section as seen along the plane indicated by the line 3 3 of Fig. l; and Fig. 1 is a plan view of the type of key employed in actuating the lock shown inthe drawings.

In this drawing, constituting a part of the application, 1 designates any preferred type of casing here shown as constructed in such a manner as to allow the lock to be mortised into the edge of a door. It will be evident, however, that any appropriate casing could well be provided.

Disposed horizontally within the casing 1 and bearing against the lower side thereof, is a locking bolt 2 whose front body portion is provided with a slot 3 receiving a.

resides in ceri understood, The rear end of the bolt 2 which is disposed midway between the two ends of the casing 1, is formed with a notch z in its upper side, thus providing a projection or stop 6 disposed at the rear end of the body of said bolt. This rear end is provided with a rearwardly extending integral extension plate 7 having near its rear end a projection 8 adapted for engagement with a key 9 inserted vthrough a keyhole 11 formed in the casing, a projection 8 being disposed contiguous to the keyhole yas clearly shown in Figs. 1 and 2.

Disposed above the bolt 2 and having one of its ends pivotally supported by any preferred means at 12, is a tumbler arm 13 which is of substantially rectilinear formation, the intermediate portion of said tumbler arm 13 being spaced above the keyhole 11 and being retained against downward movement by a stop 111 carried by the casing. The arm 13 is normally moved into contact with the stop 14, however, by a coiled spring 15 having one of its ends anchored to a hook or the like on the interior of the casing, whilevits other end is connectedv to a hook 16 formed on therear end of said arm. Vhen the tumbler arm is disposed in its lowermost position, a lockingprojection 17 which depends from its forward end portion, is received by the notch 5 when the bolt is retracted, but abuts the rear side of thestop 6 when said bolt is projected. Needless to say, it is necessary before projecting or retracting the boltfto raise the tumbler arm 13 bythe insertion of if srarns narnia@ onirica. L

a key.. In the present embodiment of the invention, this key is shown more particu- Y larly in Fig.- 4 as provided with a pair of wings 18 projecting laterally in opposite directions from its shank 19,- the key and the keyhole 11 being of corresponding formation. When this key is inserted and turned in the proper direction, the tumbler arm 13 will first be raisedafter which the bolt will be projected or retracted as the case may be. It becomes expedient, however, to provide simple and efficient meansv for retarding the rotation of the key after it has been inserted into the lock, thus preventing slammingl of the door and jarring of any sort from removing the key from the keyhole. In order to accomplish this result, a pair of key checking stops 20 are cast integrally with or lotherwise carried by the lower side of the tumbler arm 13, these stops being thus spaced above the keyhole 11 and above the projection 8. By this construction, after the key is first inserted with the wings 1S thereof in horizontal positions, and said key is rotated approximately onefourth of a revolution, the uppermost wing thereof comes into forcible frictional contact with one of the stops 20, thus yieldably retarding rotation of the key. With the key in this position, the lowermost wing thereof is spaced only a. slight distance from the projection 8 with which it contacts upon further rotation, it being evident that such rotation will raise the tumbler arm 13 to retract its stop 17, before the bolt is actuated.

lt is to be observed that the stop ll not only limits the downward movement of the tumbler'arm 18, but is positioned in contact with the rearmost stop 20. By so doing, rearward thrusts exerted on said arm vby attempted retraction of the bolt, will be resisted not only by the pivot 12 of the arm, but by the stops 20 and 14.

vln conjunction with the parts above described, practically any preferred type of spring projected catch 2G may be provided, this catch being here shown as equipped with a yoke on its rear end engaged by the head 27 rotated by the shank 2S of the knobs (not shown).

From the foregoing description, taken in connection with the accompanying drawings, it will be evident that although extremely simple construction has been provided for accomplishing the desired end, the

complete lock will be very efficient in operation and will possess a number of highly advantageous features.V Particular emphasis is laid upon the provision of the key checking stop means and upon the specific structure of the bolt and its locking tumbler, these features being the most salient of the Y invention.

Copies of this patent may be obtained for pivoted at its front end above the bolt and having its rear end disposed above the keyhole, a stop depending from the tumbler arm for reception in the aforesaid notch to control the movement of the bolt, a stop beneath the rear end of said tumbler arm, a spring for normally lowering` said arm into contact with the stop, a key shank insertible horizontallyk intothe casing through the keyhole therein, oppositely extending radial wings formed on the inner end of said shank, a shoulder on the extension plate disposed in the path of one wing, and a pair of depending stops formed integrally with the lower side of the tumbler arm and Vhaving their inner faces disposed in' the path of the other wing for frictional contact with the latter to prevent easy rotation of the key shank. y

2.v A lock comprising a casing having in one side a keyhole, a bolt slidable horizontally in said casing and-having a notch in its upper side, an extension plate extending rearwardly from said bolt'below the keyhole, a horizontally disposed tumbler arm pivoted at its front end above the bolt and having its rear end disposed above the keyhole, a stop depending from the tumbler arm for reception in the aforesaid notch to control the movement of the bolt, a key shank insertible horizontally into the casing through the keyhole and having on its inner end a pair of oppositely extending radial wings, a shoulder on the extension plate disposed in the path of one of said wings, a pair of depending stops formed integrally with the lower side of the tumbler arm having their inner faces disposed in the path of the lother wing for frictional contact therewith to prevent easy turning of the key shank, a rigid stop carried by the casing and disposed beneath the rear end of the tumbler arm in contact with the rearmost of the pair of stops on said arm, whereby to assist in receiving rearward thrusts exerted on said tumbler arm by attempted retraction Vof thebolt, and a spring for normally lowering the tumbler arm into contact with the last named stop.

In testimony whereof. we have hereunto setour hands in presence of two subscribing witnesses.

JOSEPH M. RONALTER. JOSEPH P. BAUBY. Witnesses:

FREDERICK C. BAUBY, Louis V. HAYES.

five cents each, by addressing the Commissioner of Patents, 'l/Vashington, D. C.

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