US2036776A

US2036776A - Coincidental lock

Info

Publication number: US2036776A
Application number: US31214A
Authority: US
Inventors: Hugo G Rubner
Original assignee: Briggs and Stratton Corp
Current assignee: Briggs and Stratton Corp
Priority date: 1935-07-13
Filing date: 1935-07-13
Publication date: 1936-04-07
Anticipated expiration: 1953-04-07

Description

H. G. RUBNER COINCIDENTAL LOCK Filed July 13, 1935 I5 Shasta-Sheet l 1 747 LEE/firm" Apr'ifl 7, 193$. G, RUBNER ,036,77

,COINCIDENTAL LOCK Filed July 13, 1955 3 Sheets-Sheet 3 tilt Hugo G. ubner,

gs a Stratn comm-ante, Win, a corporation oil Beware Application July 13, 1935, Semi lilo. 3113M lill Ma.

This invention relates to improvements in automobile locks and refers more particularly to a coincidental lock of the type shown in the copending application of John W. FitzGerald, Serial No. 756,630, filed December 8, 193d.

As in the aforesaid application, it is a general object of this invention to provide a combined steering post and ignition switch lock wherein the locking bolt is retractible to an unlocked position simultaneously with the closing of the ignition switch by key actuated rotation of the lock cylinder and wherein the locking bolt is held in its retracted position as long as the key remains properly within the lock cylinder so that the ignition switch may be turned on and ofi without causing the bolt to lock the steering col- Lfllmlfli More specifically it is an object of this invention to provide an improved key controlled latch for holding the locking bolt in its retracted position and a simplified manner of releasing the same upon withdrawal of the key.

Y Another object of this invention is to. generally simplify and improve the-design of locks of this character and to render the same more practical and better suited for quantity production.

v complete example of the physical embodiment of tilt the invention constructed according to the best mode so far devised for the practical application or the principles thereof, and in which:

Figure l is a top plan view'of a lock mechanism embodying this invention;

Figure 2 is a longitudinal section view taken through Figure 1 on the plane of the line 2-2;

Figure 3 is a perspective view of the major elements of the lock shownseparated from each other;

Figure 4 is a side view of the lock sleeve and cylinder therein showing particularly the key controlled latch Figure 5 is a cross section view taken through Figure 2 on the plane of the line 5-5;

Figure 6 is a cross section view taken through Figure 2 on the plane of the line 6-6 with the bolt in its locked. position; and

panying drawings in which like nerals indi- 5 cate like parts throughout the several views, the numeral h designates generally the body of the lock which has a substantially barrel-like portion t forming a housing or enclosure for the lock mechanism and a ring-like part i adapted 10 to embrace the steering col 1:: 1.. a, Th ringqike part i is split as at 9 and has lugs it ed for the reception or a clamping screw (not shown) by which the ring-like part may be clamped securely to the steering column. Other lugs or attaching ears it provide means for securing the body to the dashboard of the automobile to provide support for the steering column.

The barrel-like portion 5 has a bore H. in

which a lock sleeve i3 is secured. The outer' end of the sleeve i3 is flush with the bottom or a counterbore it formed in the lock bodyand in which the enlarged head l5 of a lock cylinder I6 is received. The cylinder proper is rotatably mounted in the sleeve It as is customary and although not shown, the cylinder has a plurality of key operable tumblers which serve to hold the same against rotation except when a proper key N is inserted into the keyway of the cylinder.

As best shown in Figure 2, the sleeve l3 ex-' tends to the full depth of the bore l2, and from the bottom of the bore ii a smaller multiple diameter bore it leads to a bored chamber Hi. This bored chamber i9 is closed by an insulated terminal head 20 having stationary contacts it mounted therein to be electrically bridged by a contactor 22 mounted on an insulated carrier 28 which is disposed within the chamber it. The contacts 2i together with the contactor it comprise the ignition switch which is connected in the ignition circuit in the customary manner so that whenever the contactor 22 is in its position bridging the contacts 2], the ignition switch is closed.

The carrier" has a rectangular cavity 24 into which a correspondingly shaped lug 25 upon a driver 25 is disposed. The driver 26 is rotatably mounted in the multiple diameter bore l8 and has a substantially sector shaped cavity 27 in its front face to receive an eccentric driving lug 28 5o connection is established between the lock cylinder and. the contactor of the ignition switch and that this connection is separable and permits the removal of the lock cylinder at will.

Intersecting the bore i2 is a transverse bore 30. This bore 36 has one end closed and its other end opening into the hollow of the ring-like part l in alignment with an aperture 3i through the outer wall of the steering column through which access is had to a keeper recess 32 in the rotatable column per se.

From Figure 1, it is noted that the bore Elli also aligns with a bore 33 through the opposite wall of the ring-like part i so that a locking bolt 34 is insertable into the bore 36 prior to assembly of the lock body on the steering column. The bolt 34 has its forward end 35 reduced in diameter for projection through the aperture 3i into the keeper recess 32, and to yieldingly urge the bolt toward the column to effect this engagement, an expansive spring 36 is confined between the opposite end of the bolt and the closed end of the bore 36. The bolt preferably has its end which is engaged by the spring drilled out to provide a well in which the spring seats.

As noted hereinbefore, the lock sleeve l3 extends to the bottom of the bore i2 and consequently past the bore 3|]. To accommodate the bolt which crosses the bore l2, the lock sleeve H has its upper half out out in the form of a substantially semi-circular transverse groove or channel 31. The end of this transverse groove or channel adjacent the end of the bore 30 in which the spring 36 is disposed is of a size to receive the full diameter of the bolt, but the other half of the groove or channel is of reduced size so as to form an abrupt shoulder 38 engageable with a shoulder 39 formed on the bolt by having its medial portion 40 of reduced diameter.

Engagement of the

shoulders

38 and 39 limits the outward projection of the bolt by its spring 36. Consequently, in assembling the lock mechanism, the bolt is first inserted into the bore 30 and then while it is held in, the lock sleeve [3 is inserted and secured in place.

The inner end of the lock cylinder proper terminates near the bottom of the semi-circular transverse groove or channel. The eccentric driving lug or extension 28 of course projects past the bolt to engage the driver 26, and a cam 4| so disposed as to be engageable with the shoulder 39 and to retract the bolt against the action of its spring upon rotation of the lock cylinder in a clockwise direction with respect to Figure 1 also projects from the end of the cylinder proper. These parts are so proportioned that a quarter turn of the cylinder completely retracts the bolt out of the keeper recess 32 in the steering column and moves the contactor 22 into its bridging position to close the ignition switch.

When the bolt is fully retracted, an annular groove 42 in the bolt is in line with a pivoted latch finger 43 to enable the latch finger to engage in the groove and secure the bolt against projection tolocked position by its spring even though the lock cylinder be turned to carry the cam 4| away from the shoulder 39. The latch finger is biased to its operative position, as will be hereinafter described, and just as soon as the annular groove 42 lines up with it, it acts to secure the bolt in its retracted position while leaving the cylinder free for actuation to open and close the ignition switch without in anywise afiecting the unlocked condition of the steering column.

The latch 43 is nested in a recess 44 in the wall of the lock sleeve and comprises a fiat lever t6 overlying the flat bottom 46 of the recess and pivotally mounted thereon as at M. The outer free end of the lever 45 projects through a slot 46 leading from the recess 46 through the wall of the transverse semi-circular groove or channel 3'1! to contact the adjacent portion of the bolt. As long as the bolt is in any position other than that at which its annular groove 42 aligns with the latch, the outer end of the latch contacts the cylindrical surface of the bolt ready to be snapped into the groove 42 upon alignment therewith.

The latch is spring urged to its active position engaging the outer end of its lever 45 in the groove 42 by a spring 50 acting through a push pin 5! and a curved arm 52 formed as an integral part of the latch. The spring 50 is positioned ina drilled hole in the wall of the lock sleeve, the outer end of which is plugged to provide a seat for the spring and the inner end portion of which has the push pin 5! slidably disposed therein. The extremity of the pin projects from the wall 53 of an arcuate extension of the fiat bottomed recess 44 to engage the curved arm 52 disposed therein.

The extremity of the curved arm 52 is turned in as at 54 and extends through an opening 55 in the sleeve to contact a special tumbler 56 carried by the lock cylinder. This tumbler 56 is mounted at the innermost end of the lock cylinder and is held against displacement therefrom by a pin 5'! which limits its outward projection but affords a range of movement sufficient to swing the latch on its pivot 41 to retract the outer end of its lever 45 out of the groove 42 and thus free the bolt for projection to its locked position.

Normally, however, the tumbler 56 is held within the periphery of the cylinder by the inturned end 54 on the latch so that it does not interfere with rotation of the cylinder when the same is freed by the insertion of the key l1. Only during the insertion and withdrawal of the key is the special tumbler 56 projected beyond the periphery of the cylinder and for thispurpose, the extreme end of the key has a high point 58 which as it passes the tumbler 56 moves the same suificiently to release the latch 43.

From the foregoing description taken in connection with the accompanying drawings, it will be readily apparent to those skilled in the art to which this invention appertains, that this invention provides a simplified and commercially practical construction for locks of the character described.

What I claim as my invention is:

1. In a lock of the character described, a sleeve, a lock cylinder rotatable in the sleeve, a locking bolt movable transversely across the inner end of the lock cylinder, said sleeve having a channel to accommodate the bolt, 9. driving connection between the cylinder and bolt whereby rotation of the cylinder moves the bolt, and a latch mounted in the wall of the sleeve with a part projectable into said channel for operative engagement with the bolt to hold the bolt in a position to which it is movable by rotation of the cylinder.

2. In a look, a body having intersecting bores, a lock sleeve secured in one bore, a locking bolt slidable in the other bore with a part crossing the inner end of the sleeve, a lock cylinder rotatable in the sleeve, a driving connection between the cylinder and the bolt whereby the bolt is movable by rotation of the cylinder, and a latch mounted in the wall of the sleeve with a part iii dill

till

proiectable into a keeper recess in the bolt upon movement of the bolt by rotation of the lock cylinder to a position aligning the keeper recem with the latch.

d. In a lock, a body having intersecting bores, a lock sleeve secured in one bore, a lock cylinder rotatable in the sleeve, a locking bolt slidable in the other bore transversely past the inner end oi the cylinder, said sleeve having its inner and shaped to have a wall portion so disposed that the bolt slides thereover, a latch mounted in the wall oi the sleeve with a part projectable irom said wall portion across which the bolt slides ior locking engagement with the bolt to secure the bolt in a predetermined position, and a driving connection between the cylinder and the bolt whereby the bolt is movable to said predetened positioniby rotation of the cylinder.

4. In a lock including a spring pressed bolt and a lock cylinder for retracting the bolt against the action of its spring, a lock sleeve in which the cylinder is rotatably mounted, the sleeve havin a transverse channel in which the bolt slides, and a spring pressed latch mounted in the wall at the sleeve with a part proiectable from a walloi said channel ior locking engagement with the t to secure the bolt against endwise movement in a predetermined position.

5. In a lock of the character described, a body having intersecting bores, a lock sleeve secured in one bore with its inner end adjacent the other bore, said inner end of the sleeve having a shape so that part thereof forms substantially a continuation of said other bore, a locking bolt slidable in said other bore and across said part oi the inner end portion of the sleeve, a lock cylinder rotatable in the sleeve with its inner end ad- .iacent the side of the bolt, a driving connection between the cylinder and bolt whereby rotation of the cylinder slides the bolt, and a spring pressed latch having a part projectable from said part or the inner end portion or the sleeve across which the bolt slides for locking engagement with the bolt to secure the same in a fixed position of endwise. movement.

6. In a lock, a body having intersecting bores, a sleeve secured in one bore with its inner end adiacent the other bore, a locking bolt slidable in said other bore and across the inner end of the sleeve, a latch mounted in the wall of the sleeve with a part projectable from its inner end portion for locking engagement with the bolt to secure the bolt in a predetermined position of endwlse movement, spring means yieldingly urging the latch to operative position, a key operable lock cylinder rotatable in the sleeve upon the insertion of a proper key. a driving connection between the cylinder and the bolt whereby rotation of the cylinder moves the bolt to said predetermined position o! endwise movement at which the 'iatch becomes effective, and key operated means ior disengaging said latch from the bolt.

7. In a lock, a body having intersecting bores, a sleeve secured in one bore with its inner end adjacent theother bore, a locking bolt slidable in said other bore and across the inner end oi the sleev' a latch mounted in the wall of the sleeve with a part projectable from its inner end portion for locking engagement with the bolt to secure the bolt in a predetermined positional 'endwise movement, spring means yieldinglyurging the latch to operative position, a key operable lock cylinder rotatable in the sleeve upon WW iii the insertion oi a proper key, a driving connection between the cylinder and the bolt whereby rotation oi the cylinder moves the bolt to said predete tum-1 ed position of endwise ovement at which the latch becomes effective, and a special tumbler operable by the key upon withdrawal thereof and engaging a part or said latch to move the some out of engagement with the bolt u withdrawal of the key.

8. in a lock of the character described including a spring pressed bolt and a lock cylinder operable to retract the bolt, a lock sleeve rotatably mounting the cylinder and having a part she to substantially embrace the bolt, a latch lever pivotally mounted in the wall oi the sleeve with its outer free end engageable with the bolt to secure the boltin a predetermined position of endwise movement, a curved extension onsaid lever disposed in a recess in the wall of the sleeve and having a portion projecting through a hole leading from said recess into the bore in the sleeve for engagement with the cylinder, and key operable means in the cylinder engageable with said portion of the curved extension to impart movement to said latch lever to disengage the same from the bolt.

9. In a lock of the character described including a spring pressed bolt and a key operable lock cylinder for retracting the bolt, a sleeve bored to receive the cylinder and shaped at one end to accommodate the bolt, and alatch lying wholly within the circular wall of the sleeve and having an end portion projecting from a hole therein for operative engagement with the bolt to secure the bolt in a fixed position of endwise movement.

10. 'In a lock of the character described including a spring pressed bolt and a key operable lock cylinder ior retracting the bolt, a sleeve bored to receive the cylinder and shaped at one end to accommodate the bolt, the wall of the sleeve having an open flat bottomed recess in one side thereof with an opening leading from one end otthe recess to the portion of the sleeve across which the bolt slides, and a pivoted latch disposed in said recess and overlying the flat bottom thereof with its outer end projecting through said opening to contact the side of the bolt for-engagement with a keeper recess therein upon movement of the bolt to a position aligning the keeper recess with the latch.

11. In a lock of the character described, a body having intersecting bores, a bolt slidable in one. bore, a lock cylinder rotatable in the other bore, a driving connection between the lock cylinder and the bolt whereby rotation of the cylinder slides the bolt, 9. tumbler mounted in the cylinder and proiectable from the periphery thereoi during withdrawalof a key inserted in the cylinder, withdrawal of the key from the cylinder being possible only when the cylinder is in its position of rotation at which the tumbler moves in a line perpendicular to the axis oi! the bolt, a pivoted latch mounted to swing in a plane normal to the axis of the bolt and having its outer free end portion engageable with the bolt to secure the same against endwise movement, spring means yieldingly urging the bolt to operative position, and a curved extension on the latch having a part disposed to be engaged by said tumbler whereby projection of the tumbler during withdrawal of the key releases the latch.