US2082195A - Lock - Google Patents

Description

June 1, 1937.

L. E1v WILLIAMS LOCK Filed May 3, 1935 Patented June 1, 1937 UNITED STATES PATENT OFFICE 16 Claims.

This invention relates to locks for doors or windows, and the general object of the invention is to produce a lock of simple construction, which can be readily applied to a door and em- 5 lgodied in the handles for opening and closing the cor.

A further object of the invention is to produce a lock of this kind, which will avoid the necessity for employing knobs of ordinary construction on the door. Such knobs frequently become loose, and sometimes tend to hang in a tilted position, giving an unsightly appearance.

One of the objects of the invention is to produce a lock of this kind, which is always looked when the door is in a closed position, but in which the bolt can be readily released and moved to disengage it from the jamb by simple means, the bolt being withdrawn from the jamb automatically by the opening movement of the door. 20 A further object of the invention is-to provide a lock of this kind, in which the bolt can be readily controlled from the inner side of the door by manually cperated means such as a push button, but which can also be set for withdrawal at the outer side by employing a key.

A further object of the invention is to provide a lock of this kind, in which portions of the lock casing project on opposite sides of the door and constitute part of the door handle on that side of the door.

A further object of the invention is to produce an improved key mechanism for controlling a door lock, and in which the key not only has characteristic serrations on the edge of the key, but is provided with openings through the key, which cooperate in controlling dogs in the barrel of the lock, and which must be released to permit rotation by the key.

A further object of the invention is to provide a door lock, which can be readily applied to doors of difierent thicknesses, and which will necessitate only very simple operations on the door to enable it to receive the lock.

Further objects of the invention will appear hereinafter.

The invention consists in the novel parts and combination of parts to be described hereinafter, all of which contribute to produce an eiiicient lock.

50 A preferred embodiment of the invention is described in the following specification, while the broad scope of the invention is pointed out in the appended claims.

In the drawing:

Figure 1 is a front elevation showing a portion of a door carrying a lock embodying my invention, and showing a portion of the jamb of the door broken away. I

Figure 2 is an elevation showing a portion of the door viewed at its outer edge where the lock is carried, and further illustrating the relation of the lock to the door.

Figure 3 is a horizontal section through the door and lock taken on the line 3-3 of Figure 1, but upon an enlarged scale, and in this view the position and character of the keeper is indicated in dotted lines. This view shows the parts in a relation to lock the door.

Figure 4 is a fragmentary section illustrating the mechanism at the left of Figure 3, but showing the same in the unlocked position which would permit the door to be opened.

Figure 5 is a cross-section taken on the line 5-5 of Figure 4.

Figure 6 is a cross-section on the line 66 of Figure 4.

Figure '7 is a cross-section on the line '|--'l of Figure 3, and particularly illustrating a connection between the key-controlled means and the controlling stem for the lock.

Figure 8 is a cross-section on the line 8-8 of Figure 3, particularly illustrating details of the key-controlled mechanism of the lock.

Figure 9 is a view similar to Figure 4, but illustrating another embodiment of the mechanism whereby the rotation of a key may prevent the controlling stem from being shifted.

Figure 10 is a cross-section taken on the line Ill-l of Figure 9.

Figure 11 is a side elevation of a key capable of cooperating with the key-controlled mechanism illustrated in Figs. 3 and 8, and

Figure 12 is a longitudinal section taken through the key illustrated in Figure 11.

Referring more particularly to the parts, I indicates a portion of a door which closes against a jamb 2 having a stop 3. In order to mount the lock in the door, I drill an opening 4 completely through the door, and from the free edge of the door I drill a chamber 6, which extends also in a horizontal direction and communicates with the bore 4. The lock comprises a casing 1, which includes a tubular guide 8 received in the bore 4, and a tubular guide 9 that is received in the bore 6. The tubular guide 8 extends about an equal distance on each side from the face of the door, and forms the upper part of a handle on the exterior of the door, said handle including a grip or hand-hold l0. Each hand-hold is preferably formed with a sleeve II to telescope over the end of the tube 8, and extends downwardly so as to terminate in a foot |2 thatis secured to the face of the doorby screws l3. The tube 8 is provided at a suitable point with a rigid collar l4 through which long screws l5 may be applied, the threaded end of the screws I5 being received in threaded openings IS on the opposite side of the door, which collar I4 fits over the tube 8. The collar I4 is preferably on the inner side of the door and the clamping collar i4"- on the outer side. The use of the screws 5 and the clamping collar I4 evidently enables the lock to be readily applied to doors of different thicknesses.

The bolt of the door comprises a bolt head |1 guided to slide in the outer end of the tube 9, and carrying a shank l8, preferably of flat form, the inner portion of which is formed with a slot l9 through which one of the bolts l5 passes so as to guide the shank l8 when the bolt head |1 slides in or out of the tube 9. In the closed position of the door, the tapered nose 20 of the bolt projects into a keeper 2| on the door jamb, said keeper being indicated in dotted lines in Fig. 3. This keeper has a cam face that engages the inclined face 22 of the nose 20 of the bolt, and is also provided with an outer cam face 23, which forces the bolt head inwardly against the force of a coil spring 24 back of the bolt head. The middle portion of the shank I8 passes through a guide opening 25 in a cross wall 26 in the tube 9, and the outer end of the shank III has a loose connection with the bolt head H. For this purpose I prefer to provide a pin 21 on the bolt head extending transversely with respect to the shank l8, and the shank is provided with a relatively large opening 28 that receives this pin, the arrangement being such that the shank 18 can rock on the edges of the opening 25. A coil spring 29 on the bolt or pin 21, or other suitable means is provided for normally holding the shank I8 in its rocking position, at which time the inner end of the shank I8 is in line with a stop-head 30. In other words, the stop-head 30 is normally located in the path of the shank so as to prevent the door from being opened.

In the operation of the lock, means on the inner and outer sides of the door can be operated to shift the stop-head 30 out of line with the shank I8. This enables the door to be opened merely by pulling on the hand-hold l0 that is on the inside of the door. When this hand-hold pulls the door inwardly, the cam face 22 on the nose 20 of the bolt will cam on the abutting cam face of the keeper so as to force the bolt head inwardly, compressing the spring 24.

Within the tube 8 I provide a mechanism enabling the stop-head 30 to be shifted outwardly by a person on the inner side of the door, and to be shifted inwardly by a person on the outer side of the door, and the mechanism on the outer side of the door may include key-controlled means whereby the lock can be left in a locked condition, as illustrated in Fig. 3, to prevent the stop-head from being shifted by a person on the outer side of the door, without a key.

The stop-head 30 is carried rigidly on a stem 3|, which is guided to slide longitudinally on the central axis of the tube 3. Toward the inner side of the door the stem 3| carries a push button 32, by means of which the stem 3| can be pushed or shifted in an outward direction. The stem 3| near the stop-head 30 is formed with a shoulder 33 against which seats a locking collar 34, and opposite this locking collar 34 a relatively fixed locking collar 35 is mounted in the tube 3-. These collars 34 and 35 are so correlated in structure that if rotation 01' the relatively fixed collar with respect to the collar 34' takes place, the collar 35 may prevent movement of the collar 34 toward the left. In other words, the locking collar 35 is capable of assuming a position that will prevent the collar 34 and the stem 3| from being shifted laterally, from the outer side of the door. For this purpose the collar 35 is preferably provided with two diametrically opposite forks 36 that may align with similar forks 31, as indicated in Figure 3. When these forks are in line with each other, the stem cannot be shifted inwardly from the outside of the door. It should be understood that the locking collar 34 does not rotate, and it is fixed against rotation by any suitable means such as a pin 38 projecting into a slot 39 in one of the forks 31. A coil spring 4|] located between the collars 34 and 35, yieldingly holds the stem 3| in its normal position, in which the stop-head 30 is directly back of the shank l8. The spring 40 seats against a disc or washer 4|, and this washer has a hub 42 which has oppositely disposed slots 43 cut in it, (see Fig. 5) to cooperate with a cross pin 44 carried by the stem at this point. The outer edge of the washer 4| is formed with two diametrically opposite tongues 45 that run in corresponding grooves 46 on the inner side of the forks 36. In this construction it will be evident that a rotation of the stem 3| will be communicated to the relatively fixed locking collar 35. This rotation of the stem 3| can be effected from the outer side of the door through the agency of a key, as will be described hereinafter. When the key is inserted at the outer side of the door, the stem 3| can be rotated so as to rotate the locking collar 35 through a small angle, which is suihcient to bring the forks 36 out of alignment with the forks 31. After this is done the collar 35 will not prevent the stem 3| from being shifted in an inward direction to move the stop-head 33 out of line with the shank. The door can then be opened by pushing upon it from the outside.

The lock is provided with means on the inner side of the door for rotating the locking collar 35 to its locking position or unlocked position. For this purpose I provide a button or head 41, which may be the head of a screw 48, said screw passing through a circumferential slot 43 in the tube 3,

(see Fig. 5).

For controlling the stop-head 30 from the outer side of the door, I provide key-controlled means including a barrel 50, which barrel is mounted so that it is capable of shifting inwardly in the tube 8, and the outer end 5| of the barrel projects beyond the end of the tube 8 so as to operate as a push button to be pushed inwardly from the outside when the door is to be opened. If the collars 34 and 35 are not in their locked position, the pushing in of the button 5| will shift the stop-head 30. For this purpose the inner end of the barrel is provided with a short stem or spindle 52, the inner end of which is provided with two diametrically opposite longitudinal slots 53, and these slots cooperate with a cross pin 54 in the adjacent end of the stem, and this end of the stem is guided in a. bore 55 at the inner end of the extension 52. In other words, the connection between the barrel and the stem is constructed so as to enable an inward shifting of the barrel to shift the stem 3| by contact with the pin 54, but the connection also constitutes a lost motion rotary connection. In

other words, while the rotation of the barrel can rotate the stem through the medium of the slot 53, by reason of the fact that these slots have considerable length the barrel 58 can also be rotated independently of the stem after setting it in position to lock the stem and stop-head 30 against shifting. This lost motion rotary connection is illustrated in Figure 7.

The pin 54 in the position of rest of the lock. is located at about the middle of slot 53 when the stop head 38 is in line with the shank l8.

Although the barrel 5!! can be pushed inwardly at any time, if the locking collars 34 and 35 are not in their locked position, it is necessary to apply a key in order to enable the barrel to be rotated. For this purpose the barrel 50 and the tube 8 are provided withmeans for normally locking the barrel against rotation, but which can be released by applying the key 56. For this purpose the outer end of the barrel 50 is provided with a key slot 51 to receive the key 56, which is flat. This key has a serrated edge 58 to cooperate with a wavy or serrated edge 59 formed on the inner edge of the locking dog 68 mounted on a pivot 6| in a slot 62 in the barrel. The dog is normally pressed by a coil spring 63 that engages its bent inner end so that the outer end of the dog is normally held in a longitudinal slot 64 on the inner side of the tube 8. When the key is in place, it will move the dog 68 to withdraw it from the slot 64, and permit rotation of the barrel.

Although a single locking dog may be employed in the key barrel, I prefer to provide additional pivoted dogs 65 (see Fig. 8), which are mounted on pivot pins 66 so as to swing in and out in two slots 61, which are out of line with each other, and which are disposed in planes substantially at right angles to the plane of the slot 62. These dogs 65 have serrated inner edges, with peaks adapted to be received in aplurality of openings or perforations 68 formed in two rows through the plate of the key 56. If the wrong key is inserted in the look by a person not authorized to pass through the doorway, the key will not open the lock because it will not have the perforations 68 in the proper positions, and furthermore, the key might not have the proper wavy line or serrated edge 58 to cooperate with the dog 60. By reason of the provision of three locking dogs, a very substantial protection is afforded by this lock. Furthermore, the perforations 68 can be formed in the key very simply by means of a die when the key is punched out. Different arrangement of the holes enable a number of different locks to be made to be opened only by a certain key. The inner ends of the dogs 55 have bent ends similar to the inner end of the dog 68 illustrated in Figure 3, and they are urged in an outward direction at their outer ends by the coil spring 53.

The outer end of the shank I8 is provided with means to cooperate with the cam face 23 of the keeper 2|, to rock the shank into a position indicated by the dotted lines I8 in Figure 3. It is necessary to do this because otherwise the bolthead could not cam on the face 23 and be shoved inwardly. For this purpose the inner side of the bolt-head, that is to say, the side toward the jamb of the door, is provided with an inclined cam face 68, (see Fig. 3), and this face 68 has an opening 68 in it out of which projects the bent and crimped end III of the shank. In this way, a rounded head is formed at the outer end of the shank, which will engage the cam face 23 of the keeper when the door is swung toward its closed position. It is evident that when this crimped head 10 on the shank strikes the cam face 23, the outer end of the shank will be moved laterally, and this produces a rocking movement of the shank ill on the edges of the slot 25, thereby throwing the inner end of the shank out of line with the stop-head. The bolt-head can then cam on the cam face 23 of the keeper, which shoves the bolt-head ll inwardly against the force of its spring 24. After the door becomes completely closed, the spring 24 will shove the bolt-head out into the socket of the keeper,

and as soon as the bolt has been completely extended by the spring 24, the spring 29 will then rock the shank [8 back to its normal position with the inner end of the shank in line with the stop-head 38. r

In Figs. 9 and 10, I illustrate another embodiment of the invention, which is a modification of the construction illustrated in Fig. 3, and involving the locking collars 34 and 35. In the construction illustrated in Fig. 9, I provide a stem II corresponding to the stem 3|, and this stem is provided with two flexible heads I2 and I3, each head consisting of two semi-circular plates I4 that are hinged together by a cross pin I5 extending through' the stem. The coil spring 16 between these flexible heads, thrusts against their outer edges and holds the same against two small diametrically disposed stops 11 that are secured on the inner face of the barrel I8. These stops 11 are of angular cross-section so that each stop presents an inwardly projecting flange I9, and each of these flanges is provided on its face that is toward the flexible looking head, with a radial groove that is engaged by a radial tongue M on the adjacent leaf or section I4 of the head. Adjacent the adjacent faces of the flexible heads I2 and I3, the stem 1| is provided with cross pins 82. In the locked position for the stem II, these pins extend as indicated in Fig. 10, that is to say, they extend at right angles to the direction of the hinge pins 15. In this position of the pins 82, it is evident that the stem II cannot be shifted in either direction. However, if the stem II is rotated through 90 the pins 82 will then come into substantial parallelism with thehinge pins I5, and then if the stem II is shoved against at either end, it is evident that the flexible heads can break at one of the hinge pins I5 to enable the stem to shift.

At the inner side of the door a push button 83 is provided, which. is rigidly connected to the adjacent end of the stem II by a set screw 84. If desired, the push button 83 can be provided with a head 85, for rotating the stem from the inner side of the door to place it in its locking position. However, if this head 85 is provided, it is necessary to provide a clearance slot 86 in the adjacent end of the tube I8, and this slot 86 must permit longitudinal movement of the head 85, and also must permit circumferential movement of the head 85 in setting the stem II in its locking position.

The mode of operation of the lock will now be described. when the lock is in its locked condition, the parts are in the relation indicated in Fig. 3. Before the key 56 is inserted, the outer ends of the dogs 60 and the dogs 61 are located in their slots 64 on the inner face of the tubular guide 8. If it were attempted to push in the push-head or push-button 5i, the stem 3| could not be shifted because the forks 31 on the collar 84 are in line with the forks 38 on the locking collar 85. By inserting the key II, the serrated edge on the key will cooperate with the dog II to enable it to swing into the position in which it is indicated in Fig. 3, and at the same time, the perforations 88 through the blade of the key, will permit the dogs 61 to swing inwardly. This will free the barrel Ill so that it can be rotated. When the barrel rotates, the extension-i2 on the inner end of the barrel. through the medium of the slots 53, will rotate the pin 54, and in this way rotate the stem ll, thereby moving the collar l5, and forks 38 out of line with the forks II. The key is then rotated back to a position in which the dogs BI and I are in alignment with the groove 84, and the key is then removed. The projecting end SI of the barrel can then be pushed inwardly to shift the stem 3| toward the left, as viewed in Fig. 3, by reason of the thrust exerted against the pin M. The person who has applied the key, then pushes against the door in a direction to open it. When this occurs the cam face-of the keeper 2| that is in contact with the inclined face 22 of the nose of the bolt II, will cause the bolt to withdraw from the keeper, compressing its spring 2|. After the bolt-head II has moved out of contact with the keeper, the spring 24 will move it forward to its most extended position. When this occurs. the inner end of the shank l8 will move forwardly and clear the stop-head 30, which will then be returned by the spring 40 to its position immediately back of the end of the shank. When the door is swung to its closed position, the crimped head 10 on the shank engages the cam face 23 or the keeper, thereby swinging the outer end of the shank is relatively toward the left, as indicated by the dotted lines in Fig. 3. This will cause the shank to rock on the edges of the guide opening 25, and in this way the inner end of the shank will rock out of line with the stophead 30. This releases the bolt-head so that it can be pushed back by the cam face 23, which immediately acts upon the inclined face I. of the bolt-head to do this. In this way, the bolt-head is automatically retracted to permit it to pass into alignment with the keeper, and as soon as this alignment occurs, the bolt-head II will be forced outwardly by the spring 24, and at the same time, the spring 29 on the pin 21 acting against the side face of the shank, will rock the shank back to its normal position.

If it is not desired to lock the door on its outer side, the collar 35 is left in the position in which it was left at the time that the key 55 was removed. However, whenever it is desired to set the lock so that it can only be opened at the outside with the key, a person on the inside of the door simply rotates the collar 35 by means of the screw head 41 moving in the slot 40. In this way the collar 36 can be rotated into the position shown in Fig. 3, at which time its forks align with the forks 31 of the collar N. The door can be opened at any time from the inner side, simply by pushing in on the push button 32. This operates through the pin 44 to compress the spring 40 against the collar 34, which thrusts against the shoulder 33 on the stem 3|, thereby causing the stem to shift to the right, as viewed in Fig. 3, and thereby move the stop-head 80 out of line with the shank II. The door can then be opened simply by pulling upon it as the cam face of the keeper it will cam the bolt-head outwardly in the same manner as when the door is being opened from the outer side. In its position of rest the spring 40 is not in compression.

In the embodiment illustrated in Figs. 9 and 10, the flexible heads 12 and 13 carried on the stem Ii, cooperate with the pins 82 on the stem. When the pins 02 extend in a transverse direction to the hinge pins 1! of the flexible heads, the door is in its locked condition, but if the stem II is rotated either by a key from the outside, or by the screw head ll on the inner side of the door, until the pins I! have their axes substantially parallel with the hinge pins II, the flexible heads can then "break when the stem is pushed either from the outside or from the inside. This break ing of the flexible heads permits the shifting movement of the stem, which is sumcient to bring the stop-head out of line with the rear end of the shank.

It is understood that the embodiment of the invention described herein is only one of the many embodiments this invention may take, and

I do not wish to be limited in the practice of the I invention, nor in the claims, to the particular embodiment set forth.

What I claim is:

1. In a door lock, the combination of a casing mounted on the door, a bolt guided to slide in the plane of the door and within the casing to cooperate with a keeper attached to the door lamb, a spring back of the bolt to urge the bolt into the keeper when the door is closed, said bolt having a construction enabling the keeper in the opening movement of the door. to withdraw the bolt from the keeper, a stop associated with the bolt, normally located in line with the bolt to prevent its withdrawal, and mounted to slide transversely through the plane of the door, movable means at the exterior of the door for moving the stop to permit withdrawal of the bolt, and means controlled by a key on the exterior of the door for locking the movable stop in a position to prevent the withdrawal of the bolt.

2. In a door lock, the combination of a casing mounted on the door, a bolt guided to slide in the plane of the door and within the casing to cooperate with a keeper attached to the door lamb, a spring back of the'bolt for urging the bolt outwardly toward the keeper when the door is closed. said bolt having a construction enabling the opening movement of the door to withdraw the bolt from the keeper, a stop member in line with the bolt and located back of it, for preventing withdrawal of the bolt, means for moving the stop member out of line with the bolt, and keycontrolled means on the outer side of the door for afiecting the stop member to prevent its movement out or line with the bolt by said last named means. V

3. In a door lock to cooperate with a keeper on the door lamb and a cam for withdrawing the bolt, the combination of a casing mounted on the door, a bolt guided in the casing, a-spring urging the bolt into the keeper, said bolt having a shank extending rearwardly therefrom, a stem guided to slide in the casing transversely to the plane of the door and having a stop normally in line with the shank for preventing withdrawal of the bolt from the keeper, key-controlled means outside of the door, with means released by the key and capable of being moved thereafter-to move the stem and shift the stop out of line with the shank, and resilient means associated with the stem for yieldingly holding the stop normally in line with the shank.

4. In a door lock to cooperate with a keeper and a cam on the door jamb, the combination of a casing mounted on the door, a bolt guided in the casing, a spring urging the bolt into the keeper, said bolt having a shank extending rearwardlytherefrom, a stem guided to slide in the casing transversely to the plane of the door and having a stop normally in line with the shank for preventing withdrawal of the bolt from the keeper, movable means outside the door for shifting the stem to move it out of line with the shank, key-controlled means outside the door capable of being shifted, toshift the stem, and capable of rotating the stem, and relatively fixed means cooperating with the stem-after rotation by the key for. preventing shifting of the stem by the key-controlled means.

5. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the lock when the door is opened, the combination of a bolt having a shank, means for guiding the bolt, to move toward or from the keeper, a spring for pressing the bolt toward the keeper, a stop guided to move in the door including a stem and a stop-head, means for yieldingly'holding the stop so that the stop-head lies in the path of the shank to prevent the bolt from withdrawing from the keeper, said stem having means located at the exterior of the door to be moved by hand to shift the stop head out of the plane of the shank to enable the door to be opened, and to enable the keeper to withdraw the bolt, said spring operating to extend the bolt and the shank after the door is opened and thereby enabling said stop head to reassume its position back of the shank, and automatic means operated by the keeper when the door is moved to its closed position to deflect the shank and thereby enable the keeper to withdraw the bolt as it is moving into alignment with the keeper.

6. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the look when the door is opened,-the combination of a casing, a bolt, means for guiding the same in the casing to move toward or from the keeper, a spring for pressing the bolt towardthe keeper and maintaining the bolt extended when the door is open, said bolt including a shank, a stop including a stem and a stop-head guided to move in the door, means for yieldingly holding the stem in a position to hold the stop-head in the path of the shank to prevent the bolt from being withdrawn, means actuated by the keeper when the door is moved'to its closed position, to deflect the shank of the bolt to move the same out of line with the stop-head and thereby enable the keeper to withdraw the bolt to permit it to pass into line with the keeper, said stem having means to be moved by hand when the door is in its closed position to shift the stem and move the stop-head out ofthe path of the shank to enable the door to be pulled open while the keeper operates to withdraw the bolt by cam action on the end of the bolt.

7. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the look when the door is opened, the combination of a casing, a bolt, means for guiding the same in the casing to move toward or from the keeper, a spring for pressing the bolt toward the keeper and maintaining the bolt extended when the door is open, said bolt including a shank, a stop including a stem and a stop-head guided to move in the door, means for yieldingly holding the stem in a position to hold the stop-head in the path of the shank to prevent the bolt from being withdrawn, means actuated by the keeper when the door is moved to its closed position to deflect the shank of the bolt to move the same out of line with the stop-head and thereby enable the keeper to withdraw the bolt to permit it to pass into line with the keeper, said stem having means outside the door to be moved by hand when the door is in its closed position to shift the stem and move the stop-head out of the pathof the shank to enable the door to be pulled open while the. keeper operates to withdraw the bolt by cam action on the end of the bolt, key-controlled means outside the door mounted to slide and rotate, to be shifted by hand in the unlocked condition of the lock, to

.shift the stem and thereby move the stop-head to enable the bolt to be withdrawn, said keycontrolled means having a connection with the stem enabling the stem to be rotated by the key-controlled means, relatively fixed means mounted in the casing, and means on the stem to cooperate with the relatively fixed means when the stem is rotated through the agency of the key, to lock the stem against being shifted by the key-controlled means.

8. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the look when the door is opened, the combination of a casing, a bolt, means for guiding the same in the casing to move toward or from the keeper, a spring for pressing the bolt toward the keeper and maintaining thebolt extended when the door is open, said bolt including a shank, a stop including a stem and a stop-head guided to move in the door, means for yieldingly holding the stem in a position to hold the stop-head in the path of the shank to prevent the bolt from being withdrawn, means actuated by the keeper when the door is moved tov its closed position to defiect the shank of the bolt to move the same out of line with the stop-head and thereby enable the keeper to withdraw .the bolt to permit 1 it to pass into line with the keeper, said stem having means at the exterior, of the door. to be moved by hand when the door is in its closed position, to shift the stem and move the stophead out of the path of the shank to enable the door to be pulled open while the keeper operates to withdraw the bolt by cam action on the end of the bolt, key-controlled means at the exterior of the door mounted to slide and rotate, to be shifted by hand in the unlocked condition of the lock, to shift the stem and thereby move the stop-head to enable the bolt to be withdrawn, said key-controlled means having a connection with the stem'enabling the stem to be rotated by the key-controlled means, a relativelyv fixed locking-collar mounted in the casing, a relatively movable locking-collar carried by the stem to move toward or from the relatively fixed locking-collar, said locking-collars having correlated parts capable of engaging to prevent the stem from being shifted inwardly from the exterior of the door by the key-controlled means, said relatively fixed locking-collar having a connection with the stem enabling the stem to rotate the same on the axis of the stem to align the said correlated parts of the two lockingcollars when the stem is rotated by the key-controlled means.

9. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the look when the door is opened, the combination of a casing, a bolt, means for guiding the same in the casing to move toward orfrom the keeper, 9. spring for pressing the bolt toward the keeper and maintaining the bolt extended when the door is open,'said bolt including a shank, a stop including a stem and a stop-head guided to move in the door, means for yieldingly holding the stem in a position to hold the stop-head in the path of the shank to prevent the bolt from being withdrawn, means actuated by the keeper when the'door is moved to its closed position to deflect the shank of the bolt to move the same out of line with the stop-head and thereby enable the keeper to withdraw the bolt to permit it to pass into line with the keeper, said stern having means at the exterior of the door to be moved by hand when the door is in its closed position to shift the stem and move the stophead out of the path of the shank to enable the door to be pulled open while the keeper operates to withdraw the bolt by cam action on the end of the bolt, key-controlled means at the exterior of the door mounted to slide and rotate, to be shifted by hand in the unlocked condition of the lock, to shift the stem and thereby move the stop-head to enable the bolt to be withdrawn, said key-controlled means having a connection with the stem enabling the stem to be rotated by the key-controlled means, a relatively fixed locking-collar mounted in the casing, a relatively movable locking-collar carried by the stem to move toward or from the relatively fixed lockingcollar, said locking-collars having correlated parts capable of engaging to prevent the stem from being shifted inwardly from the exterior of the door by the key-controlled means, said relatively fixed locking-collar having a connection with the stem enabling the stem to rotate the same on the axis of the stem to align the said correlated parts of the two locking-collars when the stem is rotated by the key-controlled means, the said connection between the stem and the key-controlled means including a lost motion rotary connection enabling the key-controlled means to rotate the stem to move the relatively movable locking-collar into its looking position and enabling the key-controlled means to be rotated thereafter independently of the stem to return the key-controlled means to its normal key-receiving position. I

10. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the look when the door is opened, the combination of a casing including a tubular guide mounted in the door and extending transversely to the plane of the door, a bolt guided in the door and having a head to cooperate with the cam of the keeper to withdraw the bolt when the door is pulled open from its closed position, said bolt having a shank extending toward the tubular guide, a stem guided to slide in the tubular guide and having a stop-head in the path of the shank to normally prevent the bolt from being withdrawn by the cam of the keeper, a spring for urging the bolt toward the keeper, a lockingcollar carried by the stem so as to shift when the stem is shifted, a relatively fixed lockingcollar mounted in the tubular extension and having a connection with the stem enabling the relatively fixed locking-collar to be rotated on the axis of the stem, said locking-collars having correlated parts capable of aligning and engaging each other to prevent the stem from being moved toward the inner side of the door, keycontrolled means mounted at the outer end of the tubular guide and having a connection with the stem enabling the stem to be shifted by the key-controlled means and enabling the keycontrolled means to rotate the stem to move the relatively fixed locking-collar into its locking position to lock the relatively movable lockingcollars, and thereby prevent the key-controlled means from shifting the stem.

11. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the lock when the door is opened, the combination of a casing including a tubular guide mounted in the door and extending transversely to the plane of the door, a bolt guided in the door and having a head to cooperate with the cam of the keeper to withdraw the bolt when the door is pulled open from its closed position, said bolt having a shank extending toward the tubular guide, a stem guided to slide in the tubular guide and having a stop-head in the path of the shank to normally prevent the bolt from being withdrawn by the cam of the keeper, a spring for urging the bolt toward the keeper, a lockingcollar carried by the stem so as to shift when the stem is shifted, a relatively fixed lockingcollar mounted in the tubular extension and having a connection with the stem enabling the relatively fixed locking-collar to be rotated on the axis of the stem, said locking-collars having correlated parts capable of aligning and engaging each other to prevent the stem from being moved toward the inner side of the door, keycontrolled means mounted at the outer end of the tubular guide and having a connection with the stem enabling the stem to be shifted by the key-controlled means and enabling the key-controlled means to rotate the stem to move the relatively fixed locking-collar into its locking position to lock the relatively movable lockingcollars, and thereby prevent the key-controlled means from shifting the stem, and means on the exterior of the tubular extension on the inner side of the door for rotating the relatively fixed locking-collar into its locking position or into its unlocking position.

12. In a door lock to cooperate with a keeper of the door, a bolt guided in the door and having I a head to cooperate with the cam of the keeper to withdraw the bolt when the door is pulled open from its closed position, said bolt having a shank extending toward the tubular guide, a stem guided to slide in the tubular guide and having a stop-head in the path of the shank to normally prevent the bolt from being withdrawn by the cam of the keeper, a spring for urging the bolt toward the keeper, a locking-collar carried by the stem so as to shift when the stem is shifted, a relatively fixed locking-collar mounted in the tubular extension and having a connection with the stem enabling the relatively fixed lockingcollar to be rotated on the axis of the stem, 9. spring between the locking-collars normally holding the stem 'with the stop-head back of the shank and in its path to prevent inward movement of the same, said locking-collars having correlated parts capable of aligning and engaging each other to prevent the stem from being moved toward the inner side of the door, keycontrolled means mounted at the outer end of the tubular guide and having a connection with the stem enabling the stem to be shifted by the key-controlled means and enabling the key-controlled means to rotate the stem to move the relatively fixed locking-collar into its locking po- I sition to lock the relatively movable lockingcollars and thereby prevent the key-controlled means from shifting the stem.

13. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the look when the door is opened, the combination of a bolt having a shank, means for guidingthe bolt to move toward or from the keeper, a spring for pressing the bolt toward the keeper, a stop guided to slide transversely through the door in either direction including a stem and a stop-head, means for yieldingly holding the stop so that the stop-head lies in the path of the shank to prevent the bolt from withdrawing from the keeper, said stem having means outside the door to be pushed in by hand to shift the stem and move the stop-head out of line and to one side of the plane of the shank to enable the door to be opened, and to enable the keeper to withdraw the bolt, said spring operating to extend the bolt and the shank after the door is opened and thereby enabling said stop-head to reassume its position back of the shank, means for supporting the shank to permit the same to rock laterally to move the end of the shank out of line with the stop-head, said shank having an extension for engaging the keeper to rock the shank laterally out of its normal plane when the door is moving to its closed position, and thereby move the shank out of the plane of the stophead to enable the keeper to withdraw the bolt as it is moving into alignment with the keeper.

14. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the lock when the door is opened, the combination of a bolt having a shank, means for guiding the 40 bolt to move toward or from the keeper, a spring for pressing the bolt toward the keeper, a stop guided to move in the door including a stophead, means for yieldingly holding the stop-head in the path of the shank to prevent the bolt from withdrawing from the keeper, means at the side of the door for shifting the stem to move the stop-head out of alignment with the shank, means for rotating the stern, and mechanism controlled by the rotation of the stem, to lock 50 the stem against movement to prevent the stophead from being shifted out of line with the shank.

15. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the look when the door is opened, the combination of a bolt having a shank, means for guiding the bolt to move toward or from the keeper, a spring for pressing the bolt toward the keeper, a stop guided to move in the door including a stem and a stop-head, means for yieldingly holding the stop-head in the path of the shank to prevent the bolt from withdrawing from the keeper, means at the side of the door for shifting the stem to move the stop-head out of line with the shank, and key-controlled means mounted at the side of the door capable of being moved inwardly to shift the stem and having a connection with the stem enabling the rotation of the key-controlled means to rotate the stem, and

means whereby the rotation of the stem by the key locks the stem against shifting by the keycontrolled means.

16. In a door lock to cooperate with a keeper having a cam for withdrawing the bolt of the lock when the door is opened, the combination of a bolt having a shank, means for guiding the bolt to move toward or from the keeper, a spring for pressing the bolt toward the keeper, a stop guided to move in the door including a stem and a stop-head, a tubular guide for the stop-head, a pair of flexible heads, each head consisting of a pair of sections, hinge pins securing the plate sections to the stem, a coil spring within the tubular guide between the said flexible heads, stops on the inner side of the wall of the tubular guide and against which the ends of the spring thrust the said flexible heads, said stops located so that they engage the edges of the hinged sections remote from the said hinge pins so as to permit the stem to be shifted longitudinally in either direction from its position of rest so as to bring the stop-heed out of line with the shank of the bolt to permit the bolt to be withdrawn for opening the door, means at the end of the tubular guide for shifting the stem, and means at the side of the door for rotating the stem on its axis so as to bring the axes of the hinge pins substantially in line with the stops and thereby enable the stops to prevent longitudinal shifting of the stem.

LEWIS E. WILLIAMS.

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