US1541483A - Doorlock - Google Patents

Description

June 9, 1925.

W. H. D ARDENNE DO ORLOCK Filed Oct. 9, 1922 Patented June 9, 1925.

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WALTER H. DARDENNE, 0F LAWNDALE, PENNSYLVANIA, ASSIGNOR TO HEINTZ MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A. CORPORA- TION OF PENNSYLVANIA.

DOORLOCK.

Application filed. October a, 1922. Serial ire/593,179.

To all whom it may concern:

Be it known that T, WALTER H. DAn DENNE, a citizen of the United States, residing at Lawndale, in the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Tmprovements in Doorlocks, of which the following is a specification.

This invention relates to door locks, and more particularly to looks for doors of vehicles.

The usual construction of locks for automobile doors and the like comprises a spring pressed latch which slides back and forth across the crack of the door and into and out of a keeper recess in the door post. The springs being metallic deteriorate with use and age and are apt to stop functioning. The weaving of the door is apt to force the latch out of the socket recess and allows the door 'to fly open at inopportune' times. This is especially apt to occur after a certain extent of use, since use results in the wearing of a bevel at the locking edge of the latch. In addition to a lock one or more separate bufiers are attached to the door or door post, which very often interfere with the easy closing and locking of the door. These locks are not always easy to open, since the springs very often become stubborn or displaced.

One of the aims of my invention is to provide a lock for doors, such as automobile doors and the like, which improves upon prior constructions. Another object of my invention is to provide a combination door lock and buffer, thereby eliminating the necessity of using separate bufiers. An other object of my igvention is to provide a lock which avoids the use of the usual metallic spring and its attendant disadvantages while at the same time operates automatically to lock the door when it is closed, holds the door securely locked so that the door cannot fly open as a result of weavin and may readily and easily be unlooked y a simple manual operation. A further object of my invention is to provide a lock of the above character which is simple, durable and inexpensive in construction, eificient in operation, and one which may be assembled, attached in place, and operated readily and easily. Other objects will be in part obvious and in part pointed out hereinafter.

In accordance with my invention, instead of providing a lock having a latch which is movable across the crack of the door to engage within a keeper recess in the door post, my lock comprises two complementary plvoted latch members, neither of which extends across the door crack, simultaneously movable into and outof locking engagement with a keeper flange which is secured to the door post and extends across the door crack for engagement with the latches. The latches are yieldingly held in looking position by a resilient pad, which also acts as a buffer. This pad is positioned to be struck by the keeper flange and to be compressed thereby when the door is closed to prevent noise and rattle.

Tn order that a clearer understanding of my invention may be had, attention is here by directed to" the accompanying drawings forming a part of this application and illustrating one possible embodiment of my invention.

Referring to the drawings, Fig. 1 is a diagrammatic sectional view showing a lock embodying my invention attached to an automobile door; Fig. 2' is a plan View of the latch mechanism mounted on a door, and is taken on the line 22 of Fig. 3, the dot and dash lines indicating the unlocking position of the latch levers and the keeper being shown in section; Fig. 3 is a rear plan View of the lock; and Fig. 4 is a horizontal sectional view of the lock, and is taken on the line l4 of Fig. 2.

Referring to the drawings, 1 indicates a door which is hinged at one side, as at 2, to a door post 3, and at the opposite side has a frame member 4 which carries latch mechanism 5 of the look. A door post 6 adjaoent the door member 4 carries the end of which overlaps the rear side of the 1 outer end of upwardly extending arm 15 of lever 11. The end of arm rests against a resilient pad 16 of rubber or similar material, which is carried by the casing 8, and which yieldingly holds the latches 10 and 11 in locking position. The keeper of this lock has a flange 17 secured to the door posts 6, as by means of screws or bolts 18, and has a vertical flange 19, at'right angles to the flange 17, extending across the door crack. The central portion of flange 19 is positioned to be struck by buffer fingers 20, provided latch 11. The outer end of arm 23 is prefrecesses 22 and 25 thereof.

erably extended upwardly to form a suitable handle 27 for operating the lock.

In the preferred form, the casing of the lock is a channel shaped member having an angular recess along one edge. The bottom wall 28 of this recess has a central perforation 29 through which the bufi'er fin ers 20 of the pad 16 extend, pad 16 pre erably being also provided with projecting shoulders 30 which engage against the rear surface of the perforated wall to prevent the pad from falling through the opening. Arm

23 of lever 10 extends through a suitable perforation 31 in the wall 28, and arm 26 of lever 11 projects through a suitable slot 32 in the wall.

The operation of the lock is as follows Resilient pad 16 constantly presses against arm 15 and yieldingly holds both latches in locking position, and, when the door is closed, keeper flange 19 is held securely locked between the latches with its edges in At the same time bufl'er fingers 20 of pad 16 are compressed against flange 19, thereby holding the door against rattling. When the door is being closed, keeper flange 19 wedges or cams the latch levers 23 and 26 apiart against the pressure of pad 16 until the edges of the keeper flange are opposite the locking recesses, whereupon the resilient pad 16 causes the latch levers to snap automatically into locking engagement with the edges of keeper flange 19. Meanwhile, as the door is closed, bufler fingers 20 of the pad 16 strike the central portion of the keeper flange 19, and act as a bufler for the door. To open the 'door it is only necessary to push the handle "extends approximately the full width of pad 16 to. provide a more extended bearing against the rear of pad 16.

From the above, it will be apparent that my lock is simple and durable in construction and comparatively noiseless in operation. The firm clamping of the keeper flange between the two latch levers entirely, avoids the possibility of the door springing open on account of the weaving thereof. The objectionable features attending the use of metallic springs are entirely avoided, and on account of the buffer element of the lock mechanism, the necessity of providing one or more separate buffers for the door is eliminated. The lock is easy to assemble, mount and operate. Many other advantages of my improved lock will be apparent to those familiar with this art.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departin from the scope thereof, it is intended that a l matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim is 1. In a lock of the character described, the combination of a latch movable into and out of locking position, keeper'means for said latch, and means, comprising a pad of resilient material, for holding said latch in looking position, said pad also constituting a buffer.

2. In a lock of the character described, in

combination, a casing, two spaced, opposed latch arms mounted on said casing for movement into and out of locking position, a buffer pad of resilient material mounted on said casing intermediate said latch arms, and a keeper having edge portions positioned to engage with said latch arms and havin a central ortion positioned to strike agaihst said bu er pad. Y 3. In a lock of the character described, in combination, a casing, latch mechanism thereon, comprising two opposed bell crank levers, one arm of each lever being a latch arm and the other arms of said levers over lapping each other, and a pad of resilient material mounted on said casing intermediate said latch arms and directly in front of said overlapping arms, whereby said overlapping arms are resiliently restrained against forward movement and said latch arms are maintained resiliently, in locking position.

4. In a lock of the character described, in combination, a casing, latch mechanism thereon, comprising two opposed bell crank levers, one arm of each lever being a latch arm and the other arm of said levers overlapping each other, a pad of resilient material mounted on said casing intermediate said latch arms and directly in front of said overlapping arms, whereby said latch arms are maintained resiliently in locking position, a keeper for the latch mechanism, and said pad having forwardly exposed resilient portions, constituting a bufi'er for said keeper. 7

5. In a lock of the character described,- in combination, a casing, a latch mechanism thereon, comprising an upper latch and a lower latch, each in the form of a bell crank lever, and separately pivoted on said casing,

said lower latch having an upwardly ex tending arm resting at its outer end against the back of a resilient pad carried by said casing, the upper latch having a downwardly extending arm at its end resting against the back of said upwardly extend- I- ing arm, a keeper, said upper latch having another arm movable into and out of locking engagement With said keeper, said lower latch having another arm movable lIltO and out of locking engagement with said keeper,

said pad being positioned to yieldingly hold v WALTER H. DARDENNE.

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