US2173765A

US2173765A - Door lock

Info

Publication number: US2173765A
Authority: US
Inventors: Charles O Potter
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-01-30
Filing date: 1939-01-30
Publication date: 1939-09-19
Anticipated expiration: 1956-09-19

Description

Sept. 19, 1939. C. o. POTTEFQ DOOR LOCK Filed Jan. 50, 1939 a 4 WNW 5 6 5 0 ,7 5 7 9 4 11 D a w a I w 4 M 3 a n a x w 5 z u m w% a. H F uuuuut mama Sept, 19, 1 939 UNITED-STATES PATENT OFFICE noon LOCK Charles 0. Potter, Fullerton, Calif. Application January :0, 1939, Serial No. 253,649

7 Claims. (01. 70-153 This invention relates to door locks and more particularly'to an improved door lock adapted for use with a motor vehicle door.

An object of this invention is to provide a door lock embodying the use of a gear rack and pinion and means for selectively holding the pinion against rotation. v

Another object of this invention is to provide a lockof this kind which may be acted upon by three different elements at points remote from the lock mechanism proper.

Afurther object of this invention is to provide a lock of this kind which is relatively simplein construction so that it willvnot get out of order. To the foregoing objects and others which may hereinafter appear, the invention consists of the novel construction,- combination and arrangement of parts as will be more' speciilcaliy described and illustrated in the accompanying drawing, wherein is shown an embodiment of the invention, but it is to be understood that changes,

variations and'modiflcations may be resorted to which fall within the scope of the invention as claimed.

In the drawing:

Figure 1 is a fragmentary side elevation of a door having a lock constructed according to this invention mounted therein, a

Figure'2 is a fragmentary'horizontal section through the doorand door frame,

Figure 3 is a fragmentary sectional view taken on the line 3-36! Figure ,2,

Figure 4 is a fragmentary sectional view taken on the line 4-4 of Figure 3', and I Figure 5 is a fragmentary sectional-view. taken on the line 5-5 of Figure 2.

Referring to the drawing, the character D designates a hollow ormetal 'door structure which is connected to a door frame F. In the present instance, the door D and the frame F are associated with a vehicle. The frame F on the inner edge thereof is provided with atoothedrack or keeper In which is secured to the inner edge of the frame F by means of i'astening devices l3. Preferably the rack III is disposed in substantially horizontal position and the adjacent wall H of the door D is spaced from the adjacent wall l2 of the frame F so as to provide sufllcient space between the two walls H and |2-to permit the rack ill to be positioned therebetween.

A rotatable pinion 0'! bolt member I4 is rotatably mounted on a shaft I! carried by the door D and a portion of the pinion .or gear l4 projects through an opening I provided in the on a pin or shaft 32 carried by the housing 29 member i4 may freely rotate in either direction.

-in Figure 2, but it will be understood, if desired,

that the door D may be maintained in a partly open position with the pinion l4 engaging a se- 6 lected one of the outermost teeth of the rack l0.

A door handle I! is positioned on the outer side of the door D and is fixedly mounted on a stem or shaft |-8 which is secured to a shaft l9 extending inwardly through the. front wall of the door D. A spring 2| is secured atone end to the wall 20 of the door and at the other end to the shaft I9 and normally providesa bias to maintain the handle H in a substantially horizontal The stub shaft i9 is provided on the periphery thereof with a spiral key which is adapted to engage in a spiral groove 26 provided in a slide block.2'|'. The block 21 slidably engages the bottom wall 28 of a housing 29 and the block 2l is provided on one side thereof with a laterally projecting lugor arm 30.

A spring pressed pawl 3| is rotatably mounted and the bill of the pawl member 3| is adapted to engage the pinion or gear member i4 so as to ,hold' this gear member i4 against rotation inone direction when the pawl 3| is in operative position. A pawl releasing bar 33 is mounted within the housing 29 and is provided with an elongated slot 34 within which a pin 35 carried by the-pawl member 3| slidably engages. 'The bar 33 is provided with an elongated extension 36 which engages through the lug 30 and is secured by means of a pin 31. In this-manner, outward movement of theblock ZTWHI' pull the pawl member 3| to a released position so that the gear The pawl member 3| is yieldably held in operative position by means of a spring 38 whichis mounted on a pin 33 carried by a bell crank 40. The bell crank 40 is rockably mounted .on a pin or shaft) extending through the bottom wall 28 of the housing 29, andthe bell crank 40 has a pin 42 which slidably engages in a slot 43 carried by one end ofan elongated crank operating rod or bar 44. The bell crank 40 is providedwith an extension having a pin 46 which 5 is slidable in the slot 34 and normally engages in the slot 34' at the end opposite from the pin 35.

The bar 44 is slidable in a guide member 41 which is carried by the inner wall 48 of the door D and a spring 49 engages at one end against the lug 41 and'at the other and against a collar or flange 50 carried by the bar 44 so as to normally hold the bell crank 40 in a position'with the pin 46 at the outer end of the slot 34-. A second or inner handle 5| is mounted on a shaft or stem 52 and the shaft 52 extends through the inner wall 48-. and a wall 53 carried by. a cylindrical housing 54. The housing 54 is provided with an opening 55 through which an extension 56 pivotally carried by the inner end of the bar' 44 is adapted to engage. The cylindrical housing' 54 is adapted to befixed relative to the inner wall 48 and a plate or disc 51 is mounted within the housing 54 and is secured to the inner end of the shaft or stem 52.' The extension 58 is provided within the housing 54 with a laterally projecting lug or trunnion 58 which is rotatably mounted in an opening 59 within the plate 51 so that rotation of the plate 51 will rock the extension 58 and likewise move the bar 44 longitudinally of the door D. A locking member 58 is slidable through the inner wall 6| of the housing 54 and is constantly urged inwardly by a spring 62. The locking member 88 is adapted to yieldably hold the extension 58 against rotation when the extension56 is in the position shown in Figure 2 so as to lock the bell crank 48 against rock-.. ing movement. against rocking movement movement to a released position.

A pawl locking bolt 83 is carried by an elongated rod 64 which is slidable through the wall 18 of the housing 28 and slidably engages a lug or extension 65 carried by the pawl operating bar 44. The inner wall 48 of the door D is also provided with a guide member 66 through which the rod 84-slidably engages. A spring 81 is disposed about the rod 64 and at one end engages against the lug 58 and at the other end against a collar 88 which is fixed to the rod 64 and normally urges the bolt 83 to a released position. The bar 64 is also provided with a head or collar 89 adjacent the inner end thereof and the lug or extension 65 is slidable between the collar 68 and the collar or head 59. The collar 88 is so positioned on the rod 64 that when the bar 44 moves toward the left, as viewed in Figure 2, the lock bolt 63 will also be moved to the left or to a pawl locking position against the tension of the spring 81. In this locking position, the bar 44 is held against movement to the right by means of the locking member 60 which engages the extension 56.

In order to provide a means whereby the pawl member 3| may be locked from the exterior of the door D, I have provided a key operated locking means which includes a key operating mechanism H which is secured to the front wall 28 of the door and includes a keyhole 12 of suitable configuration through which a key is adapted to be projected for operating the mechanism H. A shaft 13 is connected to the mechanism H and is adapted to be rotated upon the rotation of the mechanism H by means of a key and a gear or pinion 14 is secured to the inner end of the shaft 13. A second gear or pinion l5 meshes with the gear-14 and is rotatably carried by a, bearing 16 securing to the inner wall 48 of the door. An arm ornotched member I1 is fixed'to the pinion or Locking of'the .bell crank 48 in one direction will likewise lock the pawl member 3| against rocking gearf|5 and is adapted to be swung upwardly upon rotation of the gear I5 in one direction so as to engage a latching device. The latching device comprises a plate member 18 provided with an elongated slot 18 through which a pin engages. The pin 80 is fixed to the inner wall 48 of the door D and-a rockable latching plate 8| is mounted on the pin or shaft 88. The rockable latching plate 8| is spring pressed by means of a spring 82 being biased to a lowermost positiorrby means of the spring 82. The sliding plate "is provided with a forwardly projecting lug 83 which is loosely positioned in a substantially U-shaped slot 84 provided in the rockable latching plate 8 I. Anupwardly projecting fork .85 is fixed to the sliding plate 18 and projects upwardly through a slot 88 provided in the bottom wall 28 of the housing 29. The fork 85 engages about the rod 84 closely adjacent the inner end of the bolt 83 so that movement of the sliding plate I8 to the left, as viewed in Figure 3, will movethe bolt 63 to a locking position.

The sliding plate I8 is provided with a substantially v-shaped cut-out 81 in the lower edge thereof within which one notch 88 of the lug I1 is adapted to. engage. The lower edge of the latching plate 8| is provided with an arcuate portion 89 with which the notched portion-98 of the lug TI is adapted to engage. The lug 11 when in released position engages against a stop member 8| and when in locked position engages against a stop member 82 which is secured to the inner wall 48 of the.door D on they side'of the pinion 1 opposite from the stopmember 8|.

In the use and operation of this door look when it is desired to open the door from the outside,

the handle I] is rocked downwardly. This downward rocking of the handle I] will pull the block 21 outwardly and at the same time rock the pawl member 3| to a released position. The'pln35 carried by the pawl member 3| at this time is positioned at the inner end of the slot 34 carried by the plate '33. The door D may then be freely swung to an open position. The door may be swung to'. a closed'position with the handle I! in eithera downwardly inclined position with the pawl 3| released from the pinion H or, if desired;

the handle l1 may be positioned as shown in Figure ,1, which is a'horizontal position. with the handle H in a horizontal position when the door is closed, the pinion M will rotate upon engagement with the gear rack l0, and the pawl 3| will yield'ably ride over theteeth of the pinion or ratchet l4.

In the event it is desired to lock the door D from the outside, a key is inserted in the keyhole l2 and the shaft vl3 then rotated in a clockwise direction. This will rotate the gear I5 in a counter-clockwise direction and swing the lug or arm 11 through an arc which will initially rock the latch plate 8| upwardly until the lug member 83 is at the lower or bight portion of the U- shaped slot 84. In this position, the continued rotation or swinging of the lug 'I'I will cause the sliding plate I8 to be moved to the left due to the engagement of the notch 88 with the forward edge of the V-shaped opening or recess 81. Forward movement, ormovement to the left of the plate I8, will movethe fork 85 to the left, as

viewed in Figure 3, which will move the locking bolt 63 forwardly or to the left in a position where notch 84. In this position, the sliding plate is .63 is held in the locked 82 will swing the latch plate 8| downwardly so that the lug 88 will be in the forward leg of the locked againstsliding movement and the bolt position against the tension of the spring '61.

Injthe event it is desired to lock'the pawl member 3| from inside of the door, the handle 5| may be rocked upwardly so asto move the locking bar 44 to the left as viewed in Figure 3. Movement to the left of the locking bar 44 will bring the lug 65into' engagement with the collar 68 so as to thereby slide the bolt or bar' 64 to the left and at the same time slide the locking bolt 63 to a locked position. The bar, is held in-a locked position when the extension 56 engages be neath the spring pressed holding member 60 carried by the housing 54. At thistime, the trunnion or lateral extension 58 carried by the bar extension 56' is substantially in a horizontal position as viewed in Figure 3. r

The pawl member 3| may benrocked to a re leased position inside the door by swinging the handle 5| downwardly so as to draw the bar 44 to the right, as viewed in Figure 3. In the event, the bolt 53 is in a locked positionat this time, the lug member 65 will engage the collar 69 so as to forcibly pull the bolt 63 to the right and at the same time the spring 51 will constantly urge the bolt 63 toward a released position. Movement of the bar 44 to the right will rock the bell crank and the extension 45. Rocking of this extension will pull the bar 33 toward the outer wall 20 of the door and thus movable lengthwise relative to said releasingv member for shifting said pawl out of normal position on the rotation of the said releasing mem- 1 berin one direction and against the action of the spring pressure applied to the pawl.

2. A door lock comprising a rotatable pinion constituting'a latching bolt-adapted for engagement with a keeper, a spring-pressed pawl engaging said pinion and normally holding said pinion against rotation in one direction with respect to the keeper, a slidable-pawl operator provided including a part formed with a spiral groove and a link connected with the pawl for shifting the latter from normal, and a rotatable shaft provided with a key slidably traveling in said groove for moving said part to a pawl releasing position.

3. A door-lock comprising a rotatable toothed locking bolt adapted for engagement with'a keeper, a spring-pressedpawl engaging said bolt and normally holding said bolt against rotation in one-direction with respect to the keeper, a slotted link connected to said pawl, an endwise movable "er, a spring-pressed pawl member connected to said link, and rotatable opcrating means operatlvely connected to said latter member for shifting said pawl to released,position. I

4. A door lock comprising a rotatable toothed locking bolt adapted for engagement with a keeper, a spring-pressed pawl engaging said bolt and normally holding said bolt against rotation in one direction with respect to the keeper, a slotted link connected to said pawl,.an endwise movable mem- 1 her connected to said link, a pawl locking member normally biased to'a released position, rotatable operating means operatively connected to said endwise movable member for shifting said endwise movable member in one direction, and means carried by said endwise movable member engaging said pawl locking member for shifting said lattermember to a pawl locking position upon pawl to released position upon movement of said 15 movement-of said endwise movable member in- 20 the opposite direction.

5. A door lock comprising a rotatable toothed v 1' locking bolt adapted for engagement with a keepengaging said bolt and normally holding said bolt against rotation in one direction with respect to the keeper, means for releasing the pawl from normal position, a springpressed pawl locking member normally disposed in released position, a key actuated slide member, and afork carried by said slide member engage able with said pawl locking member upon movef ment of said 5-416 member in one direction for shifting said pawl locking member to a locking position.

" 6. A door lock comprisinga rotatable toothed locking bolt adapted for engagement with a: keeper, a spring-pressed pawl engaging said bolt and normally holding said bolt against rotation in one direction relative to the keeper, an elongated slotted bar, means connecting said bar with 4 said pawl for moving said pawl. to released posi- ,tion upon movement ofsaid bar in one direction, a rotatable operating member, and a. link pivotally connecting said operating member with said bar whereby to move said bar in said one direction to thereby shift said pawl to a released position.

7. A door lock comprising a rotatable toothed locking bolt adapted for engagement with a keeper, a spring-pressed pawl engaging said bolt and 50 normally holding said bolt against rotation in one direction relative to the keeper, an elongated slotted bar, means connecting said bar with said pawl for moving said pawl to released position upon movement of said bar in one direction, a 35 rotatable operating member, a link pivotally connecting said operating member with said bar. whereby to move said bar in said one direction to thereby shift said pawl to a released position, a

spring-pressed pawl locking member normally go urged to a released position, means carried by said bar engageable with said locking member for shifting said locking member to a pawl looking position, and spring-pressed means engageable with said link for and bar in pawl locking position.

, CHARLES O.PO'II'ER. I

yieldably holding said link 5