US1364024A - Lock - Google Patents

Description

w. 1. AND 1. F. BECKER.

LOCK. v' n APPLICATION FILED DEC. Il, 1919.

1,364,024, Patented D60. 28, '1920.

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APPLICATION FILED Dsc. II, I9I9.

Patented Dee. 28,1920.

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WILLIAM J BECKER,y OIE DETROIT, ANI) JOHN F. BECKER, 0F LAURIUM, MICHIGAN.

LOCK.

Application led December 11, 1919.

To all w hom t 'may con com Be it known that we, WILLIAM J. BECKER,

a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, and JOHN F. BECKER, a citizen of the United States, residing at Laurium, in the county of Houghton and State of Michigan, 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.

This invention relates to locks, and more specifically to the class of locks' generally known as morti'se locks.

One object of the invention is -to generally improve upon locks of this character by providing an exceedingly strong, durable and eflicient structure that may be very quickly and easily installed in a cylindrical bore or mortisinthaedge of a door, and which may be manufactured at a comparatively low cost.

A further object is to provide a lock of this character in which a spring that actuates the latch or bolt also exerts a pressure which frictionally holds the pawl or keeper in both its operative andinoperative positions.

Other objects and advantages may become apparent to persons who read the following details of description in connection with the accompanying drawings in which Figure 1 is a view disclosing "one half or a section of the casing and the internal mechanism fitted therein.

Fig. 2 is a 'longitudinalsectional view through the two casing sections, the section being taken along the line 2 2 of Fig. 3.

Fig. 3 is a view partly in elevation and partly in vertical section, the tumbler and locking pawl being shown in their effective positions for locking the bolt against rotation.

F ig. 4 .is a transverse vertical section along the line 4 4 of Fig. '2.

Fig. 5 is a transverse vertical section along the line 5 5 ofFig. 2.l

Fig. 6 is a transverse vertical section along the linel 6 6 of Fig. 2.

Fig. 7 is a perspectiveV view of the locking pawl detached.

1 L Fig. 8. isa perspective viewer the tum- Specication of Letters Patent.

Patented Dec. 28, 1920.

serial No. 344,037.

bler and the thereon.

Fig. 9 1s a perspective view of pawl actuating sleeve seated the pawl Iactuating sleeve detached.

Referring to the drawings in detail, in which similar reference characters correspond with similar parts throughout the several views, the casing is composed of an upper section 1 and a lower section 2, although it should be understood that this lock is invertible and reversible and that the section 2 may become the upper section while the section 1 becomes the lower section. These sections may be secured together by any appropriate means including a screw 3, and each section isprovided with a track or guideway in which a rack or boltactuating bar 4'is slidable longitudinally. Each bar 4 is provided with a series vof apertures 5 in which the teeth of a Spur pinion,` 6 engage or mesh, and the pinion 6 is l formed with a rectangular aperture 7 therethrough for receiving the shank of a knob or handle whereby the pinion 6 is turned, it being shown in Fig. l that the pinion 6 is provided with trunnions 8 which are journaled in bearings 9 formed in the upper and lower sections of the casing. The front end of each bar 4 is turned laterally to provide a shoulder or abutment 10 which engages with a similar shoulder or abutment of a bolt 11, the latter including the usual latch projection which extends through the face plate of the lock and engages with an extraneous keeper (not shown). Moreover, the bolt 11 is bifurcated to receive a spring 12, a cavity 13 being provided for retaining one end of the spring in fixed relation with the bolt.l The other end of the spring 12 bears against a retaining member which has a guiding pin 15 on one side, this guiding pin extending into vthe spring 12 and keeping it substantially straight. The other side of the member 14 is concaved and seated against the convexed surface ofa pawl or member such as shown in Fig. 7, this member including a rocking shaft 16 and an arm or radial projection 17, the latter being formed with a lug 18 which is adapted to extend into a notch or recess 19 in the upper casing 1. In passing into the recess 19 the lug 18 enters between a pair of shoulders 0r abutments 20 of one of the bars 4. The pawl is also provided with-,a shoulder 21 which engages with the bolt 11 whenin the position shown in Fig. 3. It will be seen therefore, that when the pawl is in this effective position, it not only prevents the bars 4 from being actuated, but also pre* vents the bolts 11 from being actuated by extraneous means.

In order that the pawl may be moved into this effective position and held securely therein, a tumbler 22 is provided with trunnions 23 which are journaled in the upper and lower sections of the casing, and a sleeve 24; is rotatably seated on the tumbler and formed with a lateral extension or projection 25 which normally rests under the part.

17 of the pawl, as shown in Fig. 2. However, upon rotation of the sleeve 24C into the position shown in Fig. 3, the pawl is moved into the effective position shown in Fig. S and stands under the pawl to prevent its disengagement from the latch 11 and from between the shoulders of the upper bar 4. It will be seen, therefore, that the strength of the lock does not depend upon the strength of the shaftV 16, for the casing at 19 adds its strength.

It should be understood that the tumbler 22 should be normally locked and that a key may be inserted in the key-hole 26 for unlocking the tumbler and turning the same when unlocked. The details of construction of the tumbler locking means are well known to the public, and the following brief description thereof will suiiice. One or more plungers or catches 27 are spring pressed and normally held by their springs in locking engagement with the tumbler, the latter being provided with apertures which communicate with the key-hole 26 so that the key releases the tumbler from its engagement with the catches 27.v IVhen thus released, the tumbler can be turned by turning the key in the well known manner, and the catches 27 slide upon the tumbler during its rotary movement. The sleeve 24 is provided with a slot 2S which receives one end of the middle plunger 27 and permits the sleeve to rotate without interfering with the middle plunger or being interfered with by this plunger. It should be understood that the tumbler turns through an entire revolution in order to enable the key to be inserted and withdrawn while in the same position, and that the sleeve 24 rotates through only about 4:5 degrees, and therefore, the sleeve is provided with lugs or abutments 29, and that the tumbler is provided with lugs or abutments 30. Therefore, after the tumbler has rotated to approximately 45 degrees from the position shown in Figs. 2 andS, the lugs 30 pick up the lugs 29 and effect the rotary movement of the sleeve 24 from the position shown in Fig. 2 to that shown in Fig. 3.

Although we have described these embodiments of our invention very specifically, it is notmtended to limit this invention to these vwith the bolt to preventits retraction and 'said hole, and a sleeve movably seated on exact details of construction and arrangement, but changes may be made within the scope of the inventive ideas as implied and claimed.

WV hat we claim as our invention is:

1. In a'lock, a bolt, a pair of separately movable bars engageable with said bolt and movable longitudinally to retract the bolt, a rotary member engaged with said bars and operatable to move them longitudinally in opposite directions, and means independent of said bolt to directly engage with one of said bars to prevent this bar frombeing moved longitudinally.

2. In a lock, a bolt, a. pair of fiat bars each having a series of perforations in one end portion and a shoulder at its other end, a spur pinion having its teeth in mesh with the perforations of said bars and being operatable to move said bars simultaneously in opposite directions, the shoulders of said bars being engageable with said bolt to retract the latter, one of said bars being formed with spaced abutments, and means movable into the' space between said abut ments to lock said bar against longitudinal movement. Y

3. In a lock, a bolt, a bar engageable with l said bolt and movable longitudinally to re- ,t tract the bolt and also being movable indeil pendently of the bolt, a pawl engageable also being engageable with said bar to prei' vent its longitudinal movement, and meansv to actuate the pawl and hold it in its engagement with said bar and bolt.

4. In a lock, a bolt. Ya bar engageable with said bolt and movable longitudinally to retract the bolt, a pawl. a casing in which the bolt and bar are slidable and in which said pawl is pivoted, and means to move said pawl into locking engagement with said bar and into a recess of said casing so Vthat the casing `cowacts with the pivot of said pawl to secure the saidbar in its inoperative relation.

5. In a lock. a bolt. mea-ns to retract the bolt, a pawl movable from its ineffective position to its effective position for preventing the bolts retraction, a spring to move the bolt outward. means co-acting with said spring to hold said pawl both in its eifective and ineffective positions. and meansmovable from its normal position to move said pawl to its effective position and hold it in said effective position, said bolt being operatable by the retraction of said bolt to return the springfcontrolled pawl to its ineifective position when the last said means is restored to its normal position. f

6. In a lock, a bolt, means to retract said bolt, a pawl movable to an effective position for preventing retraction of said bolt,` a normally locked tumbler provided with a keyhole and adapted to be unlocked by a key in Y said tumbler and provided with a projection which is engageable with said pawl to move it to its effective position, said tumbler being provided With an abutment engageable with said sleeve for causing said projection to actuate said pawl.

7. In a lock, a bolt, means to retract they bolt, a pawl movable to an effective position for preventing retraction of the bolt, a tumbler, a key-controlled catch normally in locking engagement with the tumbler and movable out of said engagement by means of a key insertible in the tumbler and effective to turn the tumbler, and a slotted sleeve rotaour hands.

WILLIAM J. BECKER. JOHN F. BECKER.

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