US1223898A - Night-latch. - Google Patents

Description

A. A. PAGE.

NIGHT LATCH.

APPLICATION FILED MAR. 24. I913.

1,223,9, Patented Apr. 24, 191?.

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NIGHT LATCH.

APPLICATION man MAR. 24, 1913. 1- ,223,898, Patented Apr; 24, 1917.

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ALBERT A. PAGE, OF EAST HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT & COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

NIGHT-LATCH.

Application filed. March 24, 1913.

To all whom it may concern:

Be it known that T, Annnn'r A. PAGE, a citizen of the United States, residing in East Haven, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Night-Latches, of which the following is a full, clear, and exact description.

This invention relates to night latches, and more particularly to rim night latches having a latch bolt which may be double thrown. In this class of lock, the latch bolt may be projected outward beyond the usual latching position and deadlocked in such projected position, thereby serving as a dead bolt.

The present invention aims to provide simple and eflective means for insuring the outward extension of the bolt, and it is also intended to furnish improved and simplified means for deadlocking the bolt so that it cannot be forced inward beyond a certain definite position by a wire or tool inserted at the edge of the door.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings,

Figure 1 is a front elevation of a night latch embodying myinvention with the bolt in the normal latching position,

Fig. 2 is a rear elevation of Fig. 1 with the back plate removed,

Fig. 3 is a view similar to Fig. 2 showing the bolt partially extended to its double thrown position,

Fig. 4 is a similar view showing the bolt fully projected,

Fig. 5 is a similar view showing the bolt fully retracted,

Fig. 6 is a view similar to Fig. 2 but with the bolt omitted,

Fig. 7 is a section on line 7-7 of Fig. 2,

Fig. 8 is section on line 88 of Fig. 4,

Fig. 9 is a section on line 9--9 of Fig. 4,

Fig. 10 is a reverse view of certain parts, in the position shown in Fig. 4,

Fig. 11 is a detail perspective view of the hub, and

Fig. 12 is a detail perspective view of the deadlocking lever.

In the drawings, I have shown my improvements applied to a rim night latch comprising a case 15, a latch bolt 16, a re Specification of Letters Patent.

Patented Apr. 24, 1917.

Serial No. 756,553.

tracting hub 17 for the latch bolt, and a knob 18 rotatable in the front wall of the case and carrying the hub 17. The latch bolt 16, which is reversible as usual, is provided with parallel shanks 19 having cross-heads 20 at their rear extremities. Either one of these cross-heads 20 is adapted to be placed in operative relation. to the retracting hub 17, depending on the adjustment of the bolt. The shanks or stems 19 are guided in the usual guide piece 21. Springs 22 embracing the shanks 19 between the guide piece 21 and the head of the bolt, normally hold the bolt out beyond the usual latching position, but the action of the springs 22 in this respect is counteracted by a stiff spring 23 ex tending lengthwise of the case. This spring 23 forms a yielding stop for the hub 17 and normally holds the hub in such a position that the bolt will occupy the usual latching position, as shown in Fig. 2. The hub 17 acts on one of the cross-heads 20 by means of a retracting nose 24 and the spring 23 lies in the path of a lug 25 on the hub 17 so that the retracting nose 24 will hold the cross-head 20 in just that position which corresponds to the latching position of the bolt.

The retracting nose 24 of the hub projects laterally from a wing 26, the extremity of which is provided with a rounded tip or nose 27. The nose 27 is bent back out of the plane. of the nose 24 so as to lie close to the front wall of the case, and said nose 27 is adapted to engage in a. notch 28 formed in the end of av lever 29. This lever is pivoted intermediate of its ends to the front wall of the case by means of a pivot pin 30. In the form shown, the lever is of elbow shape so as to not interfere with a full retraction of the bolt, as shown in Fig. 5. When the parts are in the position shown in Fig. 2, the forward extremity 29 of the lever 29 occupies a position at one side of the bolt and extends forwardly slightly beyond the rear face of the bolt. The extreme end of the lever is cut in angular form to present a beveled bolt projecting surface 31 to cooperate with either of a pair of beveled surfaces 32 at the corners of the rear bolt face, depending on the adjustment of the bolt. The eXtreme forward end of the lever is also provided with a deadlocking surface 33 lying at an angle to the surface 31.

The operation of the device is substantially as follows: Supposing that the parts are in the position shown in Fig. 2 and it is desired to give the bolt a double throw, the knob 18 is manipulated to turn the hub 17 in a clockwise direction. This will release the bolt and permit the springs 22 thereof to move it outwardly. In case the bolt tends to stick or bind, however, the bolt must be pushed outward in a positive manner, and this is effected by means of the lever 29. As the hub reaches the position shown in Fig. 3, the nose 27 of the wing 26 will engage the notch 28 of the lever in such a manner as to swing the forward extremity of the lever in an upward direction. This causes the beveled surface 81 to engage the corresponding beveled surface 32 of the bolt in such a manner as to push the bolt outwardly in a positive manner. As the rotation of the hub is continued the lever continues to swing on its pivot until it reaches the position shown in Fig. 4, wherein the deadlocking surface 83 of the lever will lie back of the center line of the bolt and thereby effectively deadlock the bolt in its outermost position. The lever 29 will be firmly held in this position by the engagement of the lug 25 on the hub with the flat spring 23. If force is exerted on the head of the bolt to press the latter inwardly there will be no tendency for the lever to swing about its pivot if the parts are so arranged that the pivot and the forward end of the lever' are substantially in the center line of the bolt.

The spring 23, in pressing on the lug 25 of the hub, effectively prevents the member 29 from jarring out of its deadlocking position.

When it is desired to unlock the door, it is merely necessary to rotate the hub in an anticlockwise direction with respect to Fig. 4:, whereupon the retracting nose 24 will move the bolt from its fully projected position to its fully retracted position, as shown 7 in Fig. 5. The engagement of the nose 27 in the notch of the lever will move the forward end of the lever out of the path of the bolt as the latter is retracted and the hub will finally disengage the lever entirely.

Without limiting myself to the construction shown, I claim:

1. In a rim night latch, the combination of a case, a latch bolt therein having a shank, a guide piece for said shank, a spring tending to throw the latch bolt outward beyond the normal latching position, a hub for retracting said bolt, a pivoted lever in the case controlled by said hub and automatically movable. into the path of the latch bolt when the latter is projected beyond the latching position, to prevent said .bolt from being forced back into the case, and releasable means for holding said latch bolt in the normal latching position in opposition to said spring; substantially as described.

2. In a rim night latch, the combination of a case, a latch bolt therein, a spring tending to project the latch bolt beyond the normal latching position, a hub having awing engaging said bolt and adapted to retract the same, a pivoted lever in the case, a knob connected with said hub releasable means controlled by said knob for holding said latch bolt in the normal latching position in opposition to said spring, and means for moving said lever into and out of the path of the bolt as the latter is projected beyond the latching position and retracted respectively; substantially as described.

3. In a lock, the combination of a case, a latch bolt therein, a retracting hub for said latch bolt, means for projecting said bolt outward beyond the latching position as said hub is rotated, and a member in the case separate from said hub but actuated thereby to prevent the projected bolt from being forced back into the case; substantially as described.

4:. In a look, a case, a latch bolt therein, a retracting hub for said latch bolt, a spring for projecting said bolt outward beyond the latching position as said hub is rotated in one direction, and a pivoted lever in the case actuated by said hub as the latter is so rotated, to block the incursion of the bolt; substantially as described.

5. In a look, a case, a latch bolt therein, a deadlocking lever for said latch bolt, means yieldingly urging the bolt outward beyond the latching position, and a retracting hub for said latch bolt permitting the outward projection of the bolt as the hub is rotated in one direction, said hub actuating said deadlocking lever as the hub is so rotated but being free of the lever as the hub moves the latch bolt from the latching position to a fully retracted position; substantially as described.

6. In a look, a case, a latch bolt therein, a retracting hub for said latch bolt, means for projecting said bolt outward beyond the latching position as said hub is rotated in one direction, and a lever in the case actuated by the hub as the latter is so rotated, to block the incursion of the bolt, said hub being free from and moving independently of said lever, as the bolt is retracted from its normal latching position; substantially as described.

7. In a lock, the combination of a case, a latch bolt therein, means to project the latch bolt outward beyond the usual latching position, means for retracting the latch bolt, a pivoted device in the case to deadlock the bolt, and means to move said deadlocking device into the path of the bolt automatically as the latter is projected beyond latching position; substantially as described.

8. In a lock, the combination of a case, a latch bolt therein, a hub for retracting said bolt when said hub is turned in one direction, means to project the latch bolt outward beyond the usual latching position when said hub is turned in the other direction, and a lever in the case actuated automatically by said hub as the latter is turned in the last named direction, to block the incursion of the bolt; substantially as described.

9. In a lock, the combination of a latch bolt, a spring urging said bolt outward beyond the normal latching position, a retracting member abutting said bolt, a movable member acting on said retracting member to normally hold said bolt in the latching position, means for moving said movable member out of its blocking position, with respect to said retracting member, to permit the latch bolt to assume an abnormally pro tracted position, and a member independent of said retracting member but actuated thereby for deadlocking the bolt; substan tially as described.

10. In a look, a latch bolt, a retracting hub therefor, and a pivoted lever separate from but actuated by the hub to project the bolt outward beyond the latching position; substantially as described.

1.1. In a lock, the combination of a latch bolt having a head and a shank, a retracting hub cooperating with said shank, and a member actuated by said hub and engageable with the rear face of the bolt head to protract the bolt; substantially as described.

12. In a lock, the combination of a latch bolt having a head and a shank, a retracting hub cooperating with said shank, and a lever actuated by said hub and engageable with the rear face of the bolt head to protract the bolt; substantially as described.

13. In a lock, the combination of a latch bolt having a head with a beveled surface, and means to project said bolt, including a lever having a beveled surface to coact with said first named surface; substantially as described.

let. In a look, a reversible bolt having a head with beveled, corners, and projecting means for said bolt adapted to cooperate with any of said corners, according to the adjustment of the bolt; substantially as described.

15. In a look, a reversible latch bolt having a head and a shank, a hub cooperating with the shank to retract the bolt, and a pivoted lever actuated by said hub and having a beveled forward'end, the head of the bolt being provided with different beveled surfaces to cooperate with said beveled end in diflerent adjustments of the bolt; substan tially as described.

16. In a look, a latch bolt, a hub, and a combined bolt projecting and deadlocking lever actuated by the hub; substantially as described.

17. In a lock, a latch bolt, a retracting hub therefor, and a pivoted device separate from but actuated by said hub to project the bolt outward beyond the latching position and deadlock the bolt; substantially as described.

18. In a lock, the combination of a latch bolt, a retracting member engaging said bolt, a movable member acting on said retracting member to normally hold the latch bolt in the latching position, means to shift said movable member out of its blocking position, and a separate member actuated by said last-named means to positively move the latch bolt outward to an abnormally protracted position; substantially as described.

19. In a lock, a latch bolt having a head and a shank, in combination with a lever to engage the latch bolt head to give said bolt a double throw, and means for operating said lever; substantially as described.

20. In a look, a latch bolt having a head and a shank, in combination with a lever having a beveled surface to engage the rear surface of the latch bolt head, and thereby project the bolt, and means for actuating said lever; substantially as described.

21. In a look, a latch belt, a case therefor, a lever in said case having a bolt-projecting surface and a bolt-deadlocking surface, and a hub eccentric to said lever to actuate the latter from the exterior of the case; substantially as described.

22. In a lock, the combination of a case, a latch bolt therein, a hub for retracting said bolt, and means actuated by said hub but separate therefrom for throwing the latch bolt outward beyond the normal latching position; substantially as described.

23. In a lock, the combination of a case, a latch bolt therein, a hub for retracting said bolt, and means actuated by said hub but separate therefrom for throwing the latch outward beyond the normal latching position, said means movable into the path of the bolt as the latter is protracted to prevent the bolt from being forced back into the case; substantially as described.

24:. In a lock, the combination of a case, a latch bolt therein, a retracting hub for said latch bolt, said bolt movable outward beyond the normal latching position, and a member in the case separate from said hub but actuated thereby to prevent the bolt from being forced back into the case after it has been abnormally projected; substan tially as described.

25. In a lock, the combination of a case, a latch bolt therein, a retracting hub for said latch bolt, said bolt movable outward beyond the normal latching position, and a member in the case separate from the hub but actuated thereby to throw the bolt into an abnormally projected position, and then deadlock the bolt in that position; substantially as described.

26. In a rim night latch, a case, a latch bolt therein, a knob, means controlled by said knob for holding the latch bolt in normal latching position, and for releasing, said bolt so that it may be abnormally projected, and a clogging lever controlled by said knob and automatically movable into and out of the path of the bolt as the latter is abnormally projected and retracted respectively.

27. In a look, a latch bolt movable from the normal latching position to an abnormally protracted or double thrown position, a spring yieldingly projecting said bolt, a

hub abutting said bolt and adapted to re tract the same, a member acting on said hub to normally hold said bolt against protraction beyond the latching position, means on said hub to engage said last-named memher and shift it out of its blocking position when the hub is turned in one direction, and means separate from but actuated by said hub for engaging the bolt and giving it a double throw concurrently with the release of said blocking member; substantially as described.

28. In a lock, the combination of a spring pressed latch bolt adapted for abnormal protraction, a retracting hub engaging said bolt, a movable member cooperating with said hub to normally hold said bolt in latching position means on the hub for shifting said movable member out of blocking position when said hub is turned, and means actuated by the hub for positively moving the latch bolt to an abnormally protracted position automatically as said bolt is released from the latching position; substantially as described.

29. In a lock, the combination of a latch bolt movable to an abnormally protracted position, a'hub having a retracting wing for withdrawing said bolt from abnormally retracted to latching position, and on continued movement from latching position to the fully retracted position, and a separate member actuated by said hub when it is turned in the opposite direction to dog the bolt in the abnormally protracted position; substantially as described.

In -witness whereof, I have hereunto set my hand on the 20th day of March, 1913.

ALBERT A. PAGE.-

Witnesses:

RENA W001), FRANCES HOWARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. G.

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