US2627435A

US2627435A - Automatic lock

Info

Publication number: US2627435A
Application number: US209626A
Authority: US
Inventors: Frederik J Borrup
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-02-06
Filing date: 1951-02-06
Publication date: 1953-02-03
Anticipated expiration: 1970-02-03

Description

F. J. BORRUP AUTOMATIC LOCK Feb. 3, 1953 Filed Feb. 6 1951 INVENTOR. IREJJERIK .l BDRRUP 'ATTORNEY Patented Feb. 3, 1953 UNITED STATES r OFFICE Claims.

This invention relates to new and useful improvements in looks and has particular relation to a closure actuated lock for automatically looking a closure in closed position on the latter being moved from open to closed position.

An object of the invention is to provide a selflocking or automatic lock of simple yet rugged structure, which is reliable in use and adapted for long, useful life and may be manufactured at reasonable cost.

Another object is to provide an automatic lock including several features of construction whereby on being actuated to released position it will remain in such position even though the closure is not opened or until the operator is ready to move the closure to open position, which can be manually moved following its automatic looking to draw together the sashes of a window when used as a window lock or to draw more tightly closed another type of closure, which cannot be tampered with from the outside of the closure and will resist all efforts to open the closure, and which is easily installed even by unskilled persons.

Another object is to provide a self-locking or automatic lock for the sashes of a double hung window.

Other objects and advantages of the invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawing wherein a satisfactory embodiment of the invention is shown. However, it is to be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and. the scope of the appended claims.

In the drawing:

Fig. l is a sectional view through the meeting rails and adjacent portions of the top and bottom sashes of a double hung window andshowing my improved lock in place thereon and with the bottom sash raised and the lock mount cut away on one side to show the'mechanism;

Fig. 2 is a similar view but with the sashes closed and the lock locked;

Fig. 3 is aview similar to Fig. 2 but with the lock released whereby the sashes may be opened or moved relatively; and

Fig. 4 is a top plan view of the lock on portions of the meeting rails of the sashes of a double hung window.

Referring in detail to the drawing, at H3 is generally indicated the lower portion of the top sash of a double hung window and at ii is generally indicated the upper portion of the bottom cash of such window. Thus, in the sash portions it! and I i are shown the meeting rails l2 and I3 comprising respectively the bottom rail of the top sash Iii and the top rail of the bottom sash Ii. My improved loclngenerally designated I4, is mounted on the mentioned meeting rails and comprises a keeper part generally designated l5 and a latch part generally designated 16, such parts: being mounted on the rails 12 and i3, respectively.

Keeperpart 115 comprises a base or mounting portion ll through which is passed screws or other fasteners id for securing the base against the upper side of the rail I2. Rigid with and actually shown as integral with said base is an upstanding post if! out out through its front face whereby it comprises a hook portion having an inclined under surface 2| located at a rather acute angle to an inclined front face 22. Further, it is noted that the forward surface 23 of the hook 20 is rearwardly of the forward face 24 of the base ll.

Such base has achannel 25 through the mid portion of its under side and extending from front to back. Channel 25 receives the connecting portion of a trip device comprising a fiat spring including a relatively long front arm 26, a connecting portion 21 passing under the base I1, and a rear arm 28. The front and

rear arms

26 and 28 bear against vertical portions of the base or of the keeper portion thereof and it will be seen that the spring passing through the channel 25 is held in position when the keeper part [5 is mounted on rail l2. Here it is noted that the spring arm 26 extends upwardly partly across the front side of the cutout or undercut opening in the post it and has its upper end portion 29 rearwardly offset at a steep incline. The pur pose of thistripping device comprising the described spring will be fully set forth.

The lock part- It comprises a body 30 including lateral portions through which maybe passed screws or other fasteners 3| for mounting the body on the upper side of rail l3 whereby to be in line with and adjacent thekeeper part 15 when the top'and bottom sashes l0 and II are both closed. Body 30 is shown as provided with a pair of

upstanding ears

32 and 33 arranged in spaced relation. Between the cars 32 and 3 3, body 30 includes an outer arcuate surface portion 34 terminating in a shoulder 35 beyond which is aninner arcuate surface portion 36 terminatisnig at; one edge of an upper surface or shoulder A pin 38 passing through one end portion, spe- 3 cifically the upper or inner end portion of a latch .39, p-ivotally mounts said latch for swinging movement as will be described. At its other end portion, latchBEi is offset or provided with a toe or hook 4i) adapted to cooperate with the hook of the keeper by engaging the under surface of the latter for the locking of the sashes closed, as in Fig. 2. For the purpose of later description, the heel portion of the latch 39 rearwardly of the toe it, is here designated 4| and in the released or set position of the latch, such portion 4| is against the stop or limiting shoulder 35 whereby the set or released position of the latch is a predetermined position.

A hand lever, generally designated 62 and. somewhat in the form of an inverted T, includes a handle 33 and arms 44' and 45 at the inner ends of said handle and extending in substantially opposite directions therefrom. Arm E4 is bifurcated and straddles or receives in its bifurcation a web 45 formed integral with an intermediate portion of the latch 39'and a pivot pin 41 passing through these overlapped parts pivotally connects said arm A l and thus the entire hand lever with the latch.

When the parts It and it are mounted on the rails 12 and i3, they are mounted adjacent the opposed edges of said rails and in alignment and the latter is readily accomplished by aligning the fastening screws Id of the keeper part with the fastening screws 3! of the latch part. When the lock is unlocked, the parts are related as in Fig. 1, i. e., the spring arm is in a. substantially vertica1 position, the latch portion 4| is against the stop or shoulder of the mounting element, and the forward portion of the'toe 4B of the latch is projecting inwardly or forwardly over the innermost edge of. the base 30 of the. mounting element.

Additionally, the underside of the arm 45. of hand lever 52 is resting against the surface orshoulder 31 of the base. In this relation of the parts, the projected portion of toe 40, is'so located. that on a closing movement of the sashes, or of one sash relative to the other, such projecting portion of the toe will clear the front face 23' of the hook 2:; but will engage the inclinedtop' surface of the upper end portion 29 of. the spring arm 26.

The relative movement of the sashes, i. e., the

movement of either sash to closed relation with respect to the other, brings about the engagement of the projecting portion of the toe 49 with the spring arm 26. 'As a result, there is'a tendency to lift the latch 39 through an arcuate movement, the center of which is the pivot pin 38. Thus, as the latch is lifted, its toe is swung inwardly and is pressing against the spring arm 26 and enters under the hook 20 of the keeper so that the upper inclined surface of the toe engages the under inclined surface 2| of the hook MYwhereby the latch and keeper are tightly engaged.

The same described swinging movement of the latch results in a drawing forwardly, as well as a slight raising, of the arm 44 and thus of the arm 45 of the: hand lever 62 so that the arm 4.? is drawn forwardly off the surface or shoulder 37. Then the weight of the handle 43 causes a gravitational swinging of; the entire hand lever 42 on the pivot-41 whereby the hand lever moves to theposltion in Fig. 2. There it will be seen that the end surface of the hand lever arm 65 is now against the arcuate surface 36 above mentioned. 'I-hus, the hand lever is-locked against swinging movement with latch 39 in a clockwise direction about pivot pin 33 and arm pq itions 4s and 45 constitute a strut retaining the latch 39 against such movement. Surface 36 is in eccentric relation to the pivot l when the latter is located as in Fig. 2. That is the portion of said surface adjacent stop 35 is closer to the pivot than is the portion of said surface adjacent shoulder 31. Therefore, downward pressure on the handle thrusts upwardly through the strut 4445 on the latch 39. If the sashes cannot move relatively vertically they are drawn into relation with their meeting rails .tight together by-engagement of the inclined surface 2| of the keeper acting with the upper inclined surface of the toe 49.

Movement of the latch in a counter clockwise direction is prevented by its interlocking with the keeper hook 251. Thus it will be seen that the latch 39 is rigidly held in the position in which it is shown in Fig. 2. With the latch engaging the keeper hook the bottom sash ll cannot be raised and the top sash cannot be lowered. Therefore, the sashes are locked in their closed positions. This locking is accomplished automatically and thus a householder 'or the like closes the sashes and automatically locks them and cannot forget to lock them.

When the lock is released handle 43 is used to manipulate it and swing it as from the position of Fig. 2 to the dotted line position'of Fig. 3, thus drawing the latch. in a clockwise direction about the pivot 33 and withdrawing the toe it of the latch from looking engagement with hook of the keeper. This movement brings the heelportion ii of the latch against stop 35 and carries the arm 65 of hand lever 42 upwardly above'the arouate surface 33 above the shoulder or' stop 31 as the hand lever moves rearwardly on' the described clockwise movement of the latch. Then the operator may release the hand lever and it will, by gravity, drop to the full line position of Fig. 3 without causing any movement of thelatch which it will be seen is still deflecting the spring arm 26 to some extent.

Now, when one of the sashes is moved relative to the other, as into the relationship of Fig. l, the engagement of the arm 65 of the hand lever with the shoulder 31 prevents the hand lever from gravitating about either its pivot pin t! or the pivot pin 33 of the latch and so the overbalancing effect 0i the handle 43 on the hand lever cannot cause movement of the latch from its set or released position with its heel portion 4i engaging the stop 35. Therefore, the latch is accurately positioned in a predetermined location to again be deflected by the spring arm 26 into locking relation with the keeper on the sashes being closed by movement of either one'of them.

Having thus set forth the nature of m invention, What I claim is:

1. In a loclg'a' keeper comprising a post including a base or mounting portion and an outer portion the front edge'of which is located rearwardly of the front face of said base, said outer portion undercut" whereby it comprisesa hook portion the under surface'of which inclines inwardly and upwardly of the post, a latch for cooperation with said keeper and comprising a mounting member, a'latch pivoted atone end to said mounting and at its other end including a toe inclined on its upper side and adapted to enter under the hook of said keeper with the inclined side of the toe engagingthe inclined surface of the keeper, a hand lever including a handle and an arm, said arm pivoted to said latch intermediate the ends of the latter for shifting thereof, said handle overbalancing said hand lever, and normally tending to shift the same to shift said latch to locking position, and a shoulder on said mounting member and releasably holding said hand lever against such movement.

2. In a lock, a keeper part, a latch part comprising a latch adapted to lock with said keeper, a mounting member, means pivoting said latch on said mounting member for pivotal movement between a set position free of said keeper and a locked position engaging said keeper, hand lever for shifting said latch from said locked to said set position, a trip means for shifting said latch from said set to said locked position on movement of one of said parts in a plane parallel with but to pass the other, said hand lever being pivotally mounted and normally under the influence of gravity to move said latch from the first mentioned to the second mentioned of said positions, and a shoulder on said mounting in the path of movement of said hand lever when the latch is in set position to restrain such movement of said hand lever under the influence of gravity.

3. A closure lock comprising a keeper part and a latch part adapted one to be mounted on a closure for movement therewith relative to the other as the closure is moved between closed and open positions, said keeper part comprising a post having a hook portion, said latch part comprising a mounting means, a latch pivoted on said mounting means for swinging movement between a locked position engaging the hook portion of said keeper and a released position free thereof for relative movement of the lock parts, means on said mounting for engaging and limiting swinging movement of said latch to the last named position whereby the latter is a predetermined position, and a spring on said keeper part and positioned to engage said latch and direct it into locking engagement with the hook portion of said keeper post on movement of said closure to closed position.

4. A closure lock comprising a keeper part and a latch part adapted one to be mounted on a closure for movement therewith relative to the other as the closure is moved between closed and open positions, said keeper part comprising a post having a hook portion, said latch part comprising a mounting means, a latch pivoted on said mounting means for swinging movement between a locked position engaging the hook portion of said keeper and a released position free thereof for relative movement of the lock parts, means on said mounting for engaging and limiting swinging movement of said latch to the last named position whereby the latter is a predetermined position, a spring on said keeper part and posi tioned to engage said latch and direct it into locking engagement with the hook portion of said keeper post on movement of said closure to closed position, a hand lever pivoted to said latch intermediate the ends of the latter and operable to swing said latch to said released position free of said hook portion of the keeper part, said hand lever including a handle located laterally of the pivotal connection of the lever with said latch whereby said hand lever is constantl tending to gravitate to a position carrying said latch about its pivot from its predetermined released position, means on said mounting and positioned to engage said hand lever and prevent such gravitational movement thereof, and said last means having a fixed location whereby on shifting of said latch on engagement with said spring said hand lever is bodily shifted for movement in a path free of said means.

5. An automatic lock for the sashes of a double hung window, a keeper part and alatch part to be mounted on the meetingrails of the sashes of such a window, said keeper part to be fixed to the upper side of the meeting rail of a top sash and comprising a post having a hook portion, said latch part to be mounted on the upper side of the meeting rail of the bottom sash of such a window and including a mounting member, a latch piv oted at one end to said member and at its other end having a toe to engage under the hook portion of said keeper to lock said sashes in closed relation, a handle on said latch part for swinging said latch from locked position to a predetermined released position, a shoulder on said mounting member in the path of swinging movement of said latch to released position and limiting such swinging movement to that necessary to move the latch to said predetermined position, and a spring anchored to said keeper part and normally located in a position to engage the underside of the toe of said latch and swing the latter on its pivotal mounting and direct said toe under and into locking engagement with the hook of the keeper on movement of one of said sashes to closed position when the other is in closed position.

6. The automatic look as in claim 5 including a hand lever for shifting said latch from looking position to said predetermined released position, and said hand lever including a portion pivotally connected with said latch at one end and at its other end bearing against said mounting member when the latch is in looking engagement with the keeper hook and constituting a strut for rigidly holding said latch in such position.

'7. In a lock including a keeper part and a latch part, said latch part including a mounting comprising a base and an upstanding wall, a latch pivoted on said wall for swinging movement from a locked engagement with said keeper part to a released position, said base including an upper surface including an arcuate portion along which said latch may swing and a shoulder at the inner end of said portion in the path of swinging movement of the latch from locked position whereby said latch has a predetermined released position, and a hand lever for moving said latch to said released position.

8. In a lock including a keeper part and a latch part, said latch part including a mounting comprising a base and an upstanding wall, a latch pivoted on said wall for swinging movement from a locked engagement with said keeper part to a released position, said base including an upper surface including an arcuate portion along which said latch may swing and a shoulder :at the inner end of said portion in the path of swinging movement of the latch from locked position whereby said latch has a predetermined released position, a hand lever for moving said latch on its pivot to said released position, means associated with the keeper part and located to be engaged by said latch when the latter is in released position and one of said parts is moved with a closure to a closed position of the latter to rock said latch on its pivot into locking engagement with said keeper; said hand lever being pivoted to said latch and movable therewith as the latter is moved to locking relation with said keeper, said upper surface of the base including a second arcuate portion along which said hand lever moves as the latch is moved into locking relation with the keeper, and said hand lever including a portion to engage said surface and function as a strut maintaining said latch in locked relation with'said keeper.

9. In a lock including a keeper part and a latch part including amounting and a latch pivoted on said mounting and swingable between locking engagement with said keeper and a predetermined released position, a hand lever for swinging said latch to released position, said hand lever including a strut portion, and said mounting having a concave arcuate surface portion against which said strut portion engages and along which it moves as said latch moves for maintaining said latch in locking engagement with said keeper.

10. 'I he, device as in claim 8 wherein said second arcuate surface is eccentric to the pivot of said hand lever when said latch is engaging said keeper whereby further movement of the hand lever in the same direction is a wedging action operating through said strut on said latch.

FREDERIK J. BORRUP.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS