US1359374A - Door-lock - Google Patents

Description

L. HILDRETH.

DOOR LOCK.

APPLICATION FILED 001.11. I9I9.

mma Nov. 16, 1920 2 SHEETS-SHEET I.

L. HILDRETH.

DOOR LOCK.

APPLICATION FILED ocr. H, 1919.

Patented Nov. 16, 1920.

2 SHEETS-SHEET 2.

Hill.

Imi

@warmup UNITED STATES PATENT-OFFICE.

LAWRENCE HILDRETH, 0F LEXINGTONrKENTUCKY.

DOOR-LOCK.

invention, such as will enable others skilled in the art to which it appertains to make and use the saine. 1

My invention relates to improvements in door locks, and more particularly to those intended principally for use on automobile doors, although the device is not restrictedA to any particular field, Y,

The principal object of the invention is to provide a door lock of simple and inexpenn sive nature havin novel means for holding the bolt retractec while the door is open,' and for releasing said bolt automaticallyV when the door is closed, thus making'it unnecessary to slam the door as must now be done.

A. further object is to provide a lock of the above named type having a rocking control member and a bolt forming bill carried by said member, said bill `being tapered for snug reception in a keeper to prevent rattling of the door. Y

In constructing the device, a novel form of latch is carried by the control member for holding it in bolt releasing position, and

Y. a further object is to provide a single spring for moving said latch to operative position when the lockis released, and for progecting the bolt when the door is closed.

Still further objects are to provide a trig-y ger and link for releasing the'la'tch when lthe door is'closed; to provide guiding means for said link on said latch; and to employ a single spring acting diagonally on said link for shifting it longitudinally and laterally for proper engagement with the latch.

With the foregoing in view, theY invention resides in the novel construction and arrangement of parts hereinafter described and claimed, the descriptive matter being supplemented bythe accompanying drawings which form a part of this application.

Figure 1 is an elevation of the interior parts of the lock showing them in position for securing the door closed. f

Fig. 2 is a view similar to 1 showing A Specification of Letters Patent. Patetgd Nov, 16, 1920.' Application filed october 11, 1919. i

Serial N0. 329,999. Y 1

different ted lines. f

Fig. 3 is a detail elevationY showing the positions of parts in full and dotinanner in which the latch is released whenthe door is closed. l Y i Figs.' 4 and 5 are respectively horizontal and verticalk sections as indicated by lines et-4L and 5-5101- Fig. 1.

Fig. 6 isa perspective view of the bolt or bill. l l

Fiat-7 is a vertical section on the plane of ber inV bill releasing position, while a link 7 and a trigger 8 are provided for releasing said latchV automatically when the door is Y closed.

The bill 3 may be mounted in any preferred manner on the control member 1 and may also be of Vany desired construction. Iir the present showing however, the bill is formed by one end of a metal bar, this bar being bent to form two crank arms 9 andjlO and av bearing 11, the latter being secured by a rivet or the like 'l2 to the member l, while the crank arms carry the .remaining portion of the bar, which portion is preferably con centric with the member 1, though located off the center thereof. The bill 3 is preferably tapered toward its free end as illustrated in Figs. 6 and 7 and it will thiis` snugly engage the keeper 4 to liold the door against rattling'.

The latch 5 may be mounted in any suitable inanner, but I have shown said latch pivoted to a lateral arm 13 extending from the crank arm 9, said arm being preferably bifurcated for the reception of the latch as shown in Fig. 6. The latch may well be' stamped from sheet metal and lis provided with a shoulder 14 adapted to engage a relatively 'iXed stop 15 when the control member 1 is turned to lock releasing position. VC/hen this takes place, the spring 16 which is connected to the latch 5 at a point spaced from its pivot 6, is placed under tension,

provided with a guide for the link 7, said guide preferably consisting of a lateral flange 17 having a vertical slot 18 in whichV the end of said link, remote from the trigger 8, is slidably received;

The upper edge of link 7 isiorm'ed with a shoulder 19 adapted for engagement with the iiange 17 at the ripper 'end of the slot 1S,

when said link is properly shifted by a spring 20, upon opening of the door. -lt will be observed that the spring 2O exerts its tension diagonally of the link 7, thus not Only sliding the latter'longitndinally i-n the required manner, but shifting it laterally to engage the shoulder 19, with the' corresponding shoulder of the latch 5, that is, thcportion of the flange 17 at the upper end of slot 18.

The trigger 8 be constructed` in'any adequate man-ner, but this part in addition to the latch 5 4Vand the link v7, vmay well be Y stamped Lfrom sheet metal as shown.

In the present form of the device, the trigger is provided with upper and lower trunnions 21 rotatable in iiXed bearings 22, said trigger having a crank arm 23V pivoted lto the link 7, and a lateral wing 2Apositioned to strike the keeper 4c when the door is closed. The rotary motion ofthe trigger- 8 under the action of the spring 20, may well be controlled by a'stop 25 carried `by the lowermost of theibearings 22, said stop being disposed in the path of the arm 23.

All the parts above described may be suitably incased and when used on automobiles, will be housed within the door in the usual way. Regardless of the form of door on which the vdevice is used however, it will be highly eflicient and in every way desirable. The moment the knob 2 is turned sufficiently to release the bill 3 from the keeper d, the

Y latch 5 moves downwardlyagainst the'tension of spring 16 and vits shoulder 1st engagesthe stop 15, thus holding the controlling member 1 in bill releasing position. 1Viv/Then the door is now opened, spring 2O comes into play to shift link 7 into operative engagement with latch 5, at the same time rocking the trigger 8 in a manner to dispose its wing 2A in position to strikethe keeper l whenthe door is again closed. When this closing is done, the trigger 8 is rocked on its Vjournals 21, thus pulling upon link 7 in such manner as to release the latch 5, whereupon spring 16 comes into play to proyect the bolt or bill 3 through the keeper 4. It

v will be observed that no slamming of the door is necessary, yet itjwill remain tightly closed and will be held against rattling, due to the taper of the bill.

Since probably the best results maybe obtained'from the several details shown and described, they may well be followed. I wish it understood, however, that within the scope ofthe invention as claimed, the device may be embodied in ormsother than that Shown.-

lv claim: I

1. A door lock comprising a rocking control member, a bill carried by saidcontrol member for engagement with a keeper, latch pivoted latch carried by said control member and a stop with which it coacts. for holding saidv control member in bill releasing position, and releasing means for said latch means, including a trigger in position to strike the keeper.

3'; A structure as specified inclaim 2, to-

gether with a spring connected with said latch for engaging it with. said stop and` for rocking said control` membery to bill applying position-when said latch isireleased.

A. A door-'lock comprising a rocking control member7 a bill carried by said control member forv` engagement with a keeper, a pivotedlatch carried by'rsaid control member anda stop withv which it coacts for holding said control member in bill releasing position,'said latch having a guida-a latch releasing device Areceived in said guide, anda trigger for operating said releasingdevice, said trigger being disposed to strike the keeper. v

5. A door` lock comprising a rocking control member, a bill carried by said control memberV for engagement with a keeper, a pivoted latch carried'by said control member and a stop with vwhich it coacts for holding said control member in billreleasing position, a latch releasing link, eoac'tingY shoulders on said latch and link for ei'igage-S ment when said lath is Set and the door opened, a trigger .connected with said link and disposed to strike the keeper, and spring means for shifting said trigger and said link to engage said shoulders when the door is opened.

Y G. A structure as Vspecified in claim 5, said spring means consisting of a spring connected with said link and exerting its tension diagonally thereon.

7. A door lock comprising a rocking' control member, a spring projected bill concentricallyrca'rried by said lcontrol member and tapered to form a compensating agent to take up wear and prevent rattling, means for securing said controlV member in bill-releasing position before the door is opened, a trigger mechanism operated when the door is closed, and means for engaging said trigger mechanism With the bill-retaining latch V when the door is opened, whereby said latch and bill will be automatically released When' the door is closed.

8. A door lock comprising a bolt for engagement With a keeper, a latch for hold-- ing said bolt in retracted position before the door opens, and a releasing device Which connects with said latch When the door opens, said releasing device including a trigany opening movement of the door, and means automatically operable upon closing of the door for releasing said holding means.

l0. A ydoor lock comprising a bolt for engagement with a keeper, means for locking said bolt in retracted position before `any opening movement of the door, and releasing means for said holding means movable independently of the latter for operativeengagement therewith when the door is opened, said releasing means having a trigger disposed bythe aforesaid movement in position to strike the keeper when the door is closed.

In testimony whereof I have liereunto'setV my hand.

LAWRENCE HILDRETH.

Images