US2327441A - Door lock - Google Patents

Description

, 1941 2 Sheets-Sheet 1 lNvEriToR 14 1] 1 I'd? Mars/1a BY 4404 AT ORNEY$ Aug. 24, 1943. w. MARSHALL DOOR LOCK Filed Oct. 22

n- =4: ,M 4 ill W 5. 9 f; 2 1 M W Aug. 24, 1943. w. MARSHALL 2,327;4'41

DOOR LOCK Filed Oct. 22,- 1941 2 Sheets-Sheet 2 .4 I v INVENTOR Y 6' M71341? Mk/Jdil LE-E E 3 1 substantially along the line l-'| of Fig. 6, looking in the direction of the arrows; and

Fig. 8 is an enlarged fragmentary elevational. view of the mounting means for one end or por-' tion of the remote control locking device for locking and releasing the latch mechanism of the preceding views.

Before explaining in detail the present" invention it is to be understood that the invention is back [4 is of substantially triangular shape or formation and is provided with an upright straight edge portion l5 and a straight edged heel portion 56 which normally contacts the inner face of the flange! I when the rollback is in its vertinot limited in its application. to the details of.

construction and arrangement of parts illustrated in the accompanying drawings, since the invention is, capable of other embodiments and of being practiced or carried out in various ways.

Also it is to be understood that the phraseology or terminology employed herein isfor the, pur pose of description and not of limitation, and it is not intended to limit the invention claimed herein beyond the requirements of the prior art.

Referring now particularly to the drawings, and especially Fig. 1 thereof, A represents'as a whole a portion of a motor vehicle body of the enclosed-type which is provided witha' rear door B and a front door C. The rear door is of the type which is hinged at its forward edge to a body pillar or post which is located between the front and rear doors.

The improved door latch assembly embodying the present invention is indicated as a whole at cal or full line position, as seen in Figs. 3 and 6.

.The upper inner portion of the rollback i i is provided with a notch or horizontal slot i1 and with an overhanging nose or substantially hook-like portion l8.

Anactuating lever or link member, shown as a whole at 20, is pivotallymounted upon the inner face of the case plate portion ID by means of a pivot pin or stud 2|. This actuating lever or intermediate control member 20 is provided with an upright leg portion 22 which extends substantially parallel to the plane of the case plate portion 1| 5! and with a lowerv offset or angularly disposed portion 25 which extends in a plane which is substantially parallel to the plane of the flange II. The upright portion 22 of the lever convergesslightly toward its upper end and its D in Figs. 1 and 3, and as shown in Fig. l, is incorporated with the rear door B. The latch bolt assembly or mechanism; D isadapted to be operated or actuated from outside the door B by means of the usual handle E and is-also adapted to be operated from the interior or inner side of the door B by means of a remote control device, shown as a whole at F.

- The front door 0 of the body illustrated in Fig.

1 may be provided with a. key actuated latch mechanism which is shown ,as a whole at G, this mechanism being similar to that shown at D. The latch mechanism G-is, as shown, provided with an external actuating handle H and with an.

interior remote control device which is provided with a handle K.

- While I have shownlny improved latchassem bly or mechanism embodying the present invention, merely for purposes of illustration, as being, applied to the doors B and C which are hinged.

at their front edges, it will be understood, of

course, that the latch mechanism or assembly is equally well adapted for use upon doorswhich.

are hinged at their opposite or rear edges...

Referring particularly to Figs. 3 and Got the drawings, the latchassembly or mechanism.D,. as shown, comprises a suitable upright casecrl mounting plate is having an end flange H which.

extends at substantially a right angle to; the main orv base portion H} of the case'platel 'lhe flange H, as shown, is provided with, a ,pairof.

spaced apertured embossments, [2 on' its-inner face andthe main portion'of'the case'plate It,

with similar apertured embossments l 3', two such embossments being shown.

The latch assembly of the presentinvention' comprises a latch actuator .01" rollback device, shown'as a whole at l4, said device beingmounted upon theinnerface of the case plate Hlby means of a round or circular rearward projection or embossment .l la which is, adapted to be journalled ina similarly shaped hole. or. opening in the case plate portion 10.j(see particularly- Fig.

inner and outer edges 23 and 24, respectively, are straight. The edge 23 is adapted to contact the adjacent edge I5 of the rollback device in fiatwise relation when the latch member and parts are in the positions in'which they are shown in full lines in Figs. 3 and 6. The offset lower portion 25 of the lever is provided with anupper edge portion 25 which is also flat and which is adapted to contact an offset portion or projecting pin extending from the latch element, as will be described fully hereinafter. I

The latchmember or element, see'particularly Fig. 4, is maintained in its projected position as therein. sh0wn by a tension spring andthe rollbackdevice l4 and lever 20 are normally maintained in the positions in which they are shown in Fig. 3 by means of a fiat coiled tension spring 36. As shown, one end of the spring i'lll is held by a substantially U-shaped clip or support 3| carried by the plate Hi. The spring is coiled and extends upwardly toward the rollback contacting lever 20 with its upper or free end 32 having a pressure contact with the edge 24 of the lever 28. The spring 30 is of sufficient strength to maintain the lever 20 and the rollback l4 normally in their upright positions, yet permitting them to be operated bythe outside door handle E or the remote controldevice F to retract and thus release the latch from locking or latching position. I Referring now particularly to Fig. 4, the latch device or mechanism of the present invention is, as shown, in the form of a combined dovetail or 'wedging element and a pivoted latch member or element. This combined structure is mounted upon the outer face of the flange l l and extends,

:when the assembly is attached to the vehicle in the direction of the base portion [0 cf the mounting or case plate. The latch device is shown as a whole at 35 and comprises the wedgeshaped body portion or dovetail member 36 having a fiat upright outer face 31 and a rearwardly and downwardly tapering top wall 38 and a.rear- V the like 45a.

wardly and upwardly tapering lower or bottom wall The body member 36- is attached to the flange ll in any suitable manner (not shown) so as to be rigidly mounted upon said flange. As stated above, the body member 36 is of wedgelike formation, and has a rounded inner end or nose portion lllwhich is substantially fiush with the hack face of the case plate portion 59.

As best seen in Fig. i, the under portion or wall 3 9 of thewedge-shaped body member 55 is provided with a longitudinallyextending recess or socket 4! within which the latch member or element shown-as a whole a t 42, is pivotally mountedupon a pin or stud 43. The under face of the body member 36 is provided with a transverse slot 48 which registers with a similar slot 69' formed in the flange I I', see Fig. 3. The latch member or element 42 carries a transversely projecting pin "or stud member 5-6 which extends through the slots to and 49 and. projects 'inwardly beyond the inner face of the flange ll,

particularly Figs/3, 6 and '7.

The latch member or element is provided witha flat and is notched in its lower face adjacent end portion to provide an abutment or should r 4%. These portions 42a and Mb of the l', element are adapted to engage a striker member as will he presently described.

The body portion 35 of the combined wedge and latch structure is drilled in a Vert cal direction so as to provide'a threaded socket for an adjustable screw member or stud M. The upper or top edge 33 of the wedge member or doveta l is provided with a spring-like metal plate or cover it which is held in position by a screw or The free end of the membcr ii is flanged orturned down at A! to overliethe adjacent face or wall 3! of the wedge member. It will be seen that by adjusting the screw or threaded stud 4d, the position of the member or plate 55 with relation to the upper surface or edge to of the dovetail can be varied. The purpose and straight free end portion i of this structure is to provide for relatively fine adjustments so as to take care of any variationsor tolerances between the latch device carried by the door and the striker device carried by the door pillar or g arnb. By providing such for adjustment, the door to which the mechanism oithe present invention is applied may be kept from rattling and jarring.

The latch member or element 42 isnormally maintained in its projected position as seen in Fig. 4 by means of a tension spring 5-? whose upper end is wrappedor coiled arou d inwardly projecting pin or stud 5! carried by the flange ii and whose lower end en ages the pin.

it carried by the latch element. To prevent the tension spring 558 from becoming released from the stud or pin iii, a cotter or the iii 2 is passed through a transverse slot opening formed in the stud. or member-5 i.

As best seen in Fig. 5, an mproved striker device embodying the present invention i shown as a whole at This device comprises a base plate having spaced holes or openings El formed therein and longitudinally spaced projecting pins or studs 58 and 59 which are arrangedslightly on; centerwith relationto a longitudinal central line running through the face of the plate 56. The pin or stud lower end of the'plate 55 is provided with side or face Bil, see Figs. 4 and.5.. It will be understood that the striker device 55 is mounted upon the face of a door. pillar or jamb 6 l' adjacent latch adjacent inner face of the latch mechanismn35 bypassing screws or bolts (not shown) through the openings in, the base. plate 56 and is located-in. a position so that the flat free end 42a of the latch member or element 42 will engage the adjacent fiat side or face 6!]- of the stud-or pin 59 of the striker in fiatwise relation as shown in Fig. 4 when the door B is fully closed. A preliminary or safety latching-position of the door is-provided by virtue of the notchedlower edge of the latch member or element 42 whichprovides the stop or abutment 42b which, as the latch assembly and combined wedge member or dovetail 35. is moved inwardly between the vertically spaced pins or studs 58 and 59, will first engage th fiat face or side 66 of the pin 59. Upon furthermovement of the door B towards closed position, the tension spring will force thelatch into its fully operative or final locking position, thus bringing the flat free end- 42a thereof into. engagement with the adjacent fiat surface or'facetfi of the pin 59-.

As seen in Fig. 4, the adjustable screw or stud 44 has been adjusted so as to Cause the sprin like platemember or cover 45 of the latch assembly to engage the adjacentstriker pin 58. If the a pressure or tension is too great, it will be understood that the screw 44 can be adjusted so as to release someof its-pressure upon the plate 45-. The adjustment may be effected in such a manner as to cause arelatively tight, non-rattling fit between the latch assembly 35 and the striker element so as to prevent the door rom rattling.

As stated above, the latch element or member 42 may be released from its latching position either by operating the outside door handle E or by the remote control. mechanism F located on the inner face of thedoor B. As seen in Fig. 2, the door handle E is provided with a shank 9 of. square or rectangular cross section. The shank. of the handle is adapted to be passed through an opening in the outer panel of door 13 and to enter the squared recess or socket embossment Illa of the rollback device M. The rollback It is adapted to be maintained in position upon the case plate portion ill by virtue of the fact that its embossment or extension Ma fits within a. circular or round recess or hole formed in the case plate member It and additionall by means of a bracket located at the the case plate. This bracket, as shown, comprises a base portion which is preferably welded to the inner face of the flange H and with an oifset or angularly disposed portion 66 which extends substantially parallel to the inner face of the base portion it! of the case plate and is spaced therefrom so as to engage the adjacent face of the rollback The portion 65 is provided with a round or circular opening 5'! (see Fig. 3) through which the shank 9 of the handle extends. It will be understood that by turningthe handle E in a clockwise direction as viewed in'the drawings, the rollback i will be caused to pivot about its embossment portion or bearing Ma and to shift the control lever or link member 20- in clockwise direction about its pivot 2f against the action of the fiat tension. spring (ill. Such movement of the lever will Mb formed in the however, the cam member [2 is 50 to again project the latch until it assumes its latching position as shown in Fig. 4.

The remote control device for retracting the latch member or element 42 is shown'as a whole at F in Fig. 8. As shown, this remote control device comprises a mounting plate having attached thereto a strap-like member H which provides, with the plate It, a housing or-cage for a cam member or actuator 12. This cam member 12 is rigidly mounted upon a short shaft or stud 13 which finds a bearing in the strap member I! and which extends through and is journalled in an opening formed in the plate Ill. It will be understood that the inner end of the shaft or stud I3 projects beyond the inner face of the door 13 and is of preferably squared section to receive and support a conventional inner actuating handle M, Fig. 1. The cam member 12 is provided with a notch or recess 14 with which a hump or bend 15a of a tension spring 15 engages when the member '12 is in its substantially vertical position as shown. The tension spring 15 contacts the members I! and i2 and is so formed and shaped to maintain its hump portion I511 in constant contact with the adjacent surface or edge of the cam member '52. When the parts are in the position of Fig. 8, it will be noted that the spring i5 is in engagement with the recess or notch M in the cam member 12 for the purpose of maintaining saidcam member in its upright or vertical position. When, shifted to the left of Fig 8, the hump 15a enters a second notch 14a in the cam to hold said cam in an angular tilted position toward the left, which position is not shown. When in this latter position, a lug or projection 52a engages the member H to prevent further tilting movement of the cam toward the left.

The upper end of the cam member'IZ is pivotally connected at It to a connecting link or member, shown as a whole at ll. As shown, the opposite end of the link II is provided with an elongate longitudinally extending slot 18 and with an inturned lug or projecting portion l9, see particularly Figs. 3 and 6. The actuator or rollback M, see particularly Figs. 3, 6 and '7, is provided with a stud having a fixed substantially rectangular head portion 86.. This stud projects from the inner face of the rollback. The headed stud 88 is adapted to be engaged with the slot 78 so as to support the adjacent end of the link or bar ll. When the link is assembled with the stud E8, the projecting lug 19 carried by said link is aligned with the slot ll formed in the upper adjacent portion of the rollback and can move into said slot when the link is shifted toward the left of Figs. 3, 6 and 8. Thus, when the link i! is in its broken line position as shown in Fig. 3, the lug l5 underlies the nose portion it of the rollback member M and prevents said rollback from being swung or shifted in a clockwise direction upon actuation of the outer door handle E. In other words, the remote control device F serves as a lock operable from the inside of the car body as well as means for actuating the rollback i l, control lever 26 and the latch assembly to release the latch member or element 32.

I claim:

1. In a latch assembly adapted to be mounted on a swinging door, a mounting plate having an angularly disposed flange located at an edge 7 thereof, a dovetail mounted upon said flange and having a recess at one face thereof, a latch member conforming substantially to the shape of said recess and pivoted therein adjacent the leading end of the dovetail, tension means for maintaining said latch member normally in latching position, and means for actuating the latch member to retract the same.

2. In a latch assembly adapted to be mounted on a swinging door, a mounting plate, a dovetail mounted upon said plate and including a body having an inclined face, a spring member secured at its forward end to said face and having its rear end movable relative thereto, and means for adjusting said rear end to change the contour of the working face of the dovetaih 3. A door dovetail comprising a wedge-shaped member, a relatively thin spring member fixed upon the face of the member and adjustable into fixed positions to vary the wedge-shaped contour of the member, and means for adjusting said spring member.

e. In a dovetail having a wedge-shaped body portion, a member secured to an exterior face of the body portion and forming a portion of the exterior wedge-shaped contour of said body portion, means for adjusting said member relative to said body portion and independently thereof to change said contour, said member having a notch in another face thereof, and a latch member substantially fitting said notch and pivotally mounted to swing into and out of the same.

5. In a latch assembly adapted to be mounted on a swinging door, a mounting plate, a dovetail mounted upon said plate and having a recess at one face thereof, a latch member pivoted withinsaid recess to swing up and down about an axis extending transverse to the direction of swinging of the door, tension means for maintaining said latch member normally in latching position, and means for retracting said latch member.

6. In a latch assembly adapted to be mounted on a swinging door, a mounting plate, a dovetail mounted upon said plate and having a recess at one face thereof, a latch member pivoted within said recess to swing up and down about an axis extending transverse to the direction of swinging of the door, said latch member conforming substantially to the shape of said recess and having a stepped formation providing two locking steps, tension means for maintaining said latch member normally in latching position, and means for retracting said latch member.

7. In a latch assembly adapted to be mounted on a swinging door, a mounting plate, a wedgeshaped dovetail mounted upon said plate, a member secured to said dovetail and forming a portion of the exterior wedge-shaped contour of the dovetail, and means for adjusting said member relatively to and independently of said dovetail to change said contour.

8.. In a dovetail having a body portion, a member secured to the body portion and forming an exterior inclined working face for said body portion, and means on said body portion for shifting said member relative to said body portion to change the operative position of said working face.

9. In a dovetail having a body portion, a spring member secured to the body portion and forming an exterior inclined working face for said body portion, and means on said body portion for shifting said member relative to said body por tion to change the operative position of said working face,

WILLIAM MARSHALL.

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