US2059697A - Lock - Google Patents

Description

Nov. 3, 1936. E. N. JAcoBl 2,059,697

LOCK

Filed Aug. 19, 1929 Eyl fi E 2 1 /7 (My Patented Nov. 3, 1936 -NEED s'rars ATET OFFICE LOCK Application August 19, 1929, Serial No. 386,903

13 Claims.

This invention relates to certain new and useful improvements in locks and refers more particularly to pillar looks or that type employed in connection with door handles of automotive vehicles.

It is an object of this invention to provide improved means for maintaining the lock cylinder of locks of this type assembled with the casing or mounting member, which means becomes active upon insertion of the lock cylinder into the casing.

Another object of this invention resides in the provision of novel means for removably securing a lock cylinder in its casing or mounting member which is so constructed as to facilitate the assembly of the lock.

Another object of this invention resides in the provision of retaining means for securing the lock cylinder against withdrawal from its handle carried casing, which may be moved to inactive position to permit the lock cylinder to be withdrawn by the insertion of a proper tool or piece of wire through an opening in the shank of the handle.

Another object of this invention resides in the provision of a substantially floating retaining member and means whereby movement of the lock cylinder may be imparted thereto, to move it into operative position securing the lock cylinder against withdrawal.

A further object of this invention resides in the provision of means for removably securing the lock cylinder in its mounting member which necessitates turning of the cylinder to a predetermined position and the insertion of a suitable tool into an opening in the mounting member before the cylinder can be Withdrawn.

And a still further object of this invention resides in the provision of a lock device in which the lock cylinder is retained against withdrawal by a yieldable retaining member carried in an annular groove formed in the lock cylinder and having a portion engageable in a recess formed in the mounting member, the yieldable retaining member being movable out of the recess by inserting a suitable too-l through an aperture communicating with the recess.

With the above and other objects in View which will appear as the description proceeds, my invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claims.

In the accompanying drawing, I have illustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles thereof, and in which:

Figure 1 is a view partly in section and partly in elevation illustrating a vehicle door handle equipped with my improved lock device;

Figure 2 is a cross sectional view taken through Figure l on the plane of line 2-2;

Figure 3 is a cross sectional view taken through Figure l on the plane of line 3-3;

Figure 4 is a view similar to Figure 3, but taken through the shank of the handle slightly forward of the plane upon which Figure 3 is taken and illustrating the position of the parts during Withdrawal or insertion of the lock cylinder; and

Figure 5 is a perspective view of the lock cylinder detached from the mounting member.

Referring now more specifically to the accompanying drawing in which like numerals designate like parts, 5 represents the handle of a vehicle which in the present instance is stamped from bendable metal and has a tubular casing G secured thereto in any conventional manner to extend rearwardly thereof and form the shank of the handle. The extreme outer end of the tubular casing 6 has a shaft 1 secured therein through which the turning action of the handle is imparted to the door latching mechanism, not illustrated.

A look cylinder 8 is rotatably received in the casing t and has its outermost enlarged end 9 extending through an aperture in the outer face of the handle to terminate flush therewith. The lock cylinder 8 is of a conventional construction and has a plurality of tumblers ii) which, when in locked position, engage in a slot i l formed in the casing 6 and from which they are retractable upon the insertion of a proper key 92 to free the cylinder for rotation.

When the key is removed from the lock cylinder and the tumblers are engaged in the slot I I, rotation of the handle is prevented by means of .a locking bolt 13 slidable in a transverse opening in the inner end of the shaft 1 and through suitable openings in the adjacent portion of the casing 6 to engage in an opening formed in an escutcheon plate M. As is customary the escutcheon plate M isfixed to the door of the vehicle, not shown, and the engagement of the locking bolt l 3 therewith thus prevents rotation of the handle assembly.

The locking bolt [3 is retained in its position of engagement with the escutcheon plate Ill by an eccentrically mounted pin I5 extended from the inner end of the lock cylinder and movable in a recess l8 formed in the locking bolt. This construction is of conventional design and as the invention resides more particularly in the manner of securing the lock cylinder against longitudinal movement in the casing 6, the description will be directed thereto.

Formed in the innermost end of the lock cylinder adjacent the pin 15 is an annular groove I! having a longitudinal slot I8 communicating it with the forward end of the lock cylinder and forming thereby substantially a bayonet slot which is engaged with an up-turned lug or lip is formed by striking up a portion of the casing 6. The lug l9, during normal operation of the lock cylinder i. e. when the cylinder is properly assembled with the casing, is disposed in the annular groove ll into which it is movable during assembly by the proper alignment of the longitudinal slot l8 therewith.

The lock cylinder, in the present instance, is designed for approximately degrees of travel in the performance of its normal locking function, and the relation of the longitudinal slot I8 and the lug i9 is such that they align when the lock cylinder is turned to an approximate medial position. This requires the use of a proper key to align the bayonet slot with the lug 9 which is necessary before the lock cylinder can be withdrawn from its casing or mounting member.

However, to prevent unauthorized removal of the lock cylinder additional retaining means, the disabling of which requires a knowledge of its construction, are provided. This means comprises a second annular groove 20 formed in the lock cylinder inwardly of the groove I! which aligns with an opening 2| in the casing 6 when the lock cylinder is in assembled position. A yieldable retaining member 22 in the form of a substantially elliptically shaped flat spring, is positioned in the annular groove 29 with its major portion received within the periphery of the lock cylinder and its nose or point 23 extended into the opening 2| in the casing. The shape and size of the spring forming the retaining member 22 is such that in normal position i. e. with its nose 23 engaged in the opening 2i its opposite portion engages the inner wall of the casing 6 to yieldably maintain the nose 23 in the opening. The spring in this position is in nowise affected by any rotation of the plug.

In assembling the cylinder with the casing, the yieldable retaining member is compressed to be entirely within the periphery of the lock cylinder, and with the key l2 inserted to retract the tumblers, the cylinder may be freely inserted into the bore of the casing and turned to align its bayonet slot with the lug l9; and as it is also necessary that the nose of the yieldable retaining member be aligned with the opening 2 l, the lock cylinder is provided with means for imparting rotation to the retaining member while in its contracted state.

The means for imparting rotation to the retaining member includes a notch 24 having a long wall 25 and a short wall 25 at substantially right angles thereto, formed in the bottom of the annular groove 20 to provide an abrupt stop engageable with the end 21 of the yieldable retaining member upon clockwise rotation of the cylinder.

The position of the notch 24 is such that when its wall 26 is engaged with the end 27 of the yieldable retaining member and the cylinder turned to move the same to its position illustrated in Figure 3, the bayonet slot will also be aligned with the lug is as shown in Figure 4. In this manner the assembly of the lock cylinder with its casing is greatly facilitated as the two locking elements are thereby simultaneously moved into their proper positions.

To provide a more finished appearance for the stem of the handle and to enclose and hide the opening 2! and the portion of the retaining member received therein, a sleeve 28 is passed over the casing 6 and is suitably connected with the structure with its inner end abutting the escutcheon plate.

When it is desired to withdraw the cylinder, persons familiar with the construction of the device may do so by inserting a suitable tool 29 or a stiff piece of wire through a small aperture 3% formed in the sleeve 28 in alignment with the opening 2! to compress the yieldable retaining member and move its nose 23 out of the opening 2i. However, it is also necessary, before the cylinder can be withdrawn, that it be turned to a substantially medial position to align its bayonet slot with the lug I9 as hereinbefore mentioned.

With the retaining member 22 compressed to its position, illustrated in Figure 4, by the tool 29 the alignment of the bayonet slot it with the lug I9 is greatly facilitated as it is only necessary to turn the cylinder in a clockwise direction until the wall 26 of its notch 2 1 engages the end 2? of the retaining member at which time the bayonet slot l8 will be in proper alignment with the lug I9 when the cylinder may be readily withdrawn by a pull on the key. Inasmuch as the. tumblers IE will be held against longitudinal movement by the engagement of their ends with the walls of the casing, pulling out of the key will be prevented and the cylinder will necessarily follow out with the key.

From the foregoing description taken in connection with the accompanying drawing it will be readily apparent to those skilled in the art to which an invention of the character described appertains that I provide an improved lock device particularly adapted for vehicle door handles and in which the lock cylinder may be quickly assembled with its casing, and may be easily removed therefrom whenever necessary by those authorized and familiar with the construction of the lock device.

What I claim as my invention is:

1. In a lock device of the character described a mounting member having an abutment, a lock cylinder movable in the mounting member in the performance of its normal locking functions, a yieldable member carried by the lock cylinder and engageable with the mounting member abutment to releasably secure the lock cylinder in the mounting member, said yieldable member being movable out of engagement with the mounting member abutment to release the lock cylinder for Withdrawal from the mounting member, and means preventing withdrawal of the lock cylinder except when it is moved to a predetermined position relative to the mounting member.

2. In a lock device of the character described a bored mounting member having a recess communicating with its bore, a lock cylinder movable in the mounting member in the performance of its normal locking functions, a yieldable retaining member carried by the lock cylinder and normally engaging the mounting member recess to prevent detachment of the lock cylinder from the mounting member, said means being movable out of the recess by means of a proper tool, and means preventing detachment of the lock cylinder from the mounting member except when the lock cylinder is moved to a predetermined position relative to the mounting member.

3. In a lock device of the character described a bored mounting member having a recess communicating with its bore, a lock cylinder movably mounted in the mounting member and having an annular groove in alignment with said recess, a retaining member disposed in said annular groove and engaging the recess to prevent detachment of the lock cylinder from the mount ing member, the retaining member being movable out of the recess with the aid of a proper tool, and means whereby withdrawal of the lock cylinder is prevented until it is moved to a predetermined position relative to the mounting member.

4. In a lock device of the character described a mounting member having'a recess communicating with its bore, a lock cylinder movable in the mounting member in the performance of its normal locking functions, a retaining member connected with the lock cylinder and engageable in the mounting member recess to prevent withdrawal of the lock cylinder, said retaining member being movable out of the mounting member recess by the insertion of a proper tool into the recess, and means necessitating movement of the lock cylinder to a predetermined position relative to the mounting member before it can be withdrawn.

5. In a lock device of the character described a mounting member having a recess communicating with its bore, a lock cylinder movable in the mounting member in the performance of its normal locking functions, a retaining member connected with the lock cylinder and engageable in the mounting member recess to prevent withdrawal of the lock cylinder, said retaining member being movable out of the mounting member recess by the insertion of a proper tool into the recess, means necessitating movement of the lock cylinder to a predetermined position relative to the mounting member before it can be withdrawn, and means for indicating when the lock cylinder reaches said predetermined position.

6. In a lock device of the character described, a mounting member having a recess communicating with its bore, a lock cylinder movable in the mounting member in the performance of its normal locking functions, a retaining member connected with the lock cylinder and engageable in the mounting member recess to prevent withdrawal of the lock cylinder, said retaining member being movable out of the mounting member recess by the insertion of a proper tool into the recess, means necessitating the movement of the lock cylinder to a predetermined position relative to the mounting member before it can be withdrawn, and means incorporating the retaining member for indicating when the lock cylinder reaches said predetermined position.

7 The combination with a lock structure having a bored mounting member provided with a recess communicating with its bore and a lock cylinder insertable into the mounting member bore, of means for removably securing the lock cylinder in the mounting member and including a spring member carried by the lock cylinder and engageable with the recess in the mounting member as the lock cylinder is inserted therein, and cooperating means carried by the lock cylinder and the mounting member which necessitate that the cylinder be in a predetermined position with respect to the mounting member during insertion and withdrawal of the lock cylinder.

8. The combination with a lock structure including a bored mounting member having a recess communicating with its bore and a lock cylinder insertable into the bore of the mounting member, of means detachably securing the lock cylinder in the mounting member and including a yieldable member substantially floatingly connected with the lock cylinder and having a part engageable in the mounting member recess upon insertion of the lock cylinder in the mounting member, cooperating means carried by the lock cylinder and the mounting member requiring a predetermined relative position of the lock cylinder with respect to the mounting member during insertion and removal of the lock cylinder, and means whereby the yieldable retaining member is moved by the lock cylinder to align its part engageable in the mounting member recess with the recess at the same time the lock cylinder is moved to said predetermined position relative to the mounting member.

9. In a lock device of the character described, a bored mounting member having a recess communicating with its bore, a lock cylinder insertable into the mounting member and movable therein when in proper assembled position in the performance of its normal locking functions, a spring retaining member rotatably but nonlongitudinally movably connected with the lock cylinder and having a part engageable in the mounting member recess to prevent withdrawal of the lock cylinder when in proper assembled position, cooperating means carried by the lock cylinder and the mounting member requiring movement of the lock cylinder to a predetermined position relative to the mounting member, during insertion and removal of the lock cylinder, and means carried by the lock cylinder and engageable with the spring retaining means for imparting rotation thereto prior to the alignment of its part which is engageable in the mounting member recess, whereby the spring retaining member may be moved to its operative position engaging its part with the mounting member recess and said means being so arranged that the lock cylinder is in said predetermined relative position with respect to the mounting member at the time the yieldable retaining means is moved to its operative position.

10. In a lock device of the character described, a bored mounting member having a recess communicating with its bore, a lock cylinder within the mounting member bore and movable in the performance of its normal locking functions and having an annular channel in alignment with the mounting member recess when in proper assembled position, a spring ring retaining member received in said annular channel and having a part engageable in the mounting member recess to prevent withdrawal of the lock cylinder, said spring ring retaining member being compressible to lie wholly within the periphery of the lock cylinder to permit free longitudinal movement of the lock cylinder in the mounting member bore during insertion and withdrawal of the lock cylinder, cooperating means carried by the lock cylinder and the mounting member requiring that the lock cylinder be in a predeter mined relative position with respect to the mounting member during insertion and withdrawal of the lock cylinder, and means carried by the lock cylinder and engageable with the spring ring retaining member to impart movement thereto, and said means being so arranged that the lock cylinder is in its predetermined relative position with respect to the mounting member at the time the spring ring retaining member is moved to its operative position.

11. In a lock device of-the character described, a bored mounting member having a recess communicating with its bore and an aperture in alignment with the recess, a lock cylinder movable in the mounting member in the performance of its normal locking functions, a spring ring retaining member connected with the lock cylinder and normally yieldably urged to position a portion thereof in the recess to prevent withdrawal of the lock cylinder, said portion of the spring ring retaining member being movable out of the recess by the insertion of a tool through the aperture in alignment therewith to permit withdrawal of the lock cylinder, and cooperating means carried by the look cylinder and the mounting member and requiring a predetermined relative position of the lock cylinder with respect to the mounting member before the lock cylinder can be withdrawn.

12. In a look, a bored mounting member, a lock cylinder having a portion within the mounting member bore, tumblers carried by the lock cylinder and engaging the mounting member to normally restrain movement of the lock cylinder in the mounting member bore, said tumblers being retractable by the insertion of a proper key into the lock cylinder to release the lock cylinder for movement in the performance of its normal looking functions, an abutment on the mounting member, an abutment on the lock cylinder portion within the mounting member bore and spaced from the tumblers, a retaining member normally engaged with both abutments to releasably secure the lock cylinder in the mounting member, said retaining member being movable to an inactive position by the use of a proper tool, and means for preventing withdrawal of the lock cylinder from the mounting member except when said cylinder is moved after the insertion of a proper key to a predetermined position relative to the mounting member.

13. In a lock device of the character described, a bored mounting member having a recess communicating with its bore, a lock cylinder movable in the mounting member in the performance of its normal locking functions, a retaining member carried by the lock cylinder and normally engaging the mounting member recess to prevent detachment of the lock cylinder from the mounting member, said retaining member being movable out of the recess by means of a proper tool to permit the withdrawal of the cylinder from the housing, and said housing and cylinder having a cooperative groove and pin to retain the cylinder in the housing except when the cylinder is in a predetermined position in which it is retained only by the yieldable retaining member.

EDWARD N. JACOBI.

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