US1221932A - Latch. - Google Patents

Description

.L F. WHITE. I

LATCH.

APPLICATION FILED IuIIE 29. 1916.

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Patented Ip'. 1917.y

2 SHEETS* I.

J. F. WHITE.

, LATCH.

Patented Apr. 10, 1917.

' APPLICATION FILED .IUNE 29|' I9I6 2 SHEETS-SHEET 2.

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'following is a specification,

havre v JOHN-r. WHITE, or cnrcaefo, rumors.

LATCH. l

'spedire-.ation of Letters Patent.

retreated apr. io, reir.

Application med June a9, 191e. -serial Np. 106,687.

4To all whom t may eomem:

Beit known that I, JOHN F. WHITE, a citizen of the United- States, residing at Ghicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Latches, of which the had therein to the accompanying drawing.

This invention relates to an improvement in a lock or fastener designed more particularly for usein connection with securing the doors of automobiles or carriages in their closed position. l

An object of the invention -is to provide primarily a lock which will automatically fasten the door to be opened. 4 n

A further lobject is'that of' provid-ing a lock of-the character designated-as an antirattler, that is t0 say a lock which will securely fasten the door closed andwill prevent the door as well as the lock bolt from vibrating when 1in locked or locking position.

y .I-Ieretofore it has been suggested to provide a pivoted bolt membrhaving a tail piece or projection normallyv positioned to' be engaged'by the stationary part of the door frame uponl the closing ofthe j door,

thus rocking the bolt into the hasp or keeper on the frame.

provfde a trigger mechanism or device adapted toengage a shoulder on the rockingA bolt when the latter was in its locking position and for retaining the bolt in its locked position.

In suchstructures it -is found, however,

that there was necessitated a certain amountJ of play between the trigger mechanism and the rocking bolt so that the` door would have more or less freedom of movement land thereby create an objectionable rattle.l It

is to overcome the objections found to exist in structures heretofore suggested that the present inventionl is designed.

A further object of the invention isthat of the provision of means for operating the lock from the outside of the car when the car is provided wi 'h means with a spring member having 'the' requisite strength to forcibly hold theroek- 'ing boit reference being door closedbut which can uponl slight pressure be released to perm-it the j It has also been suggested-heretofore to lng the wedgmg bolt lock in, addition l a closed-in top portionl or a removable limousine top.

in close contact with the wall' of the hasp ,memben of the door frame, thereby permitting the use of a very light spring for the rocking bolt.

A still further object of the invention is that of providinga locking mechanism for automobile doors having a concealed or protected actuating or releasing member, thus overcoming the objections existing in. the present art to rejecting handles or heads.

In the drawing there is shown a construction involving the invention presently to be described and certain modifications of operating handles, but itis to be understood that the hereinafter referred to wedging member, struction can be modilied and changed without departing from the nature and principle of the invention. l

Figure 1 is a fragmentary view of the side of an automobile.;

Fig. 2 is an enlarged vertical section through an automobile door showingthe chambered `part thereof and the lock mechanism in its operative position; l

Fig. 3 is an elevation of the construction shown in Fig. 2 showing the front'plate in dotted lines; f

Fig. 4 is an edge view of the lock;v 5 is a section-through' the line 5-5 of. ig. 3, but showing the keeper on the door frame;

Fig. 6 is a view similar to Fig. 5 illustrateect on the rocking bolt; Fig. 7 is a detail section of anoutside means operating thetriggerI mechanism or to the regular inside thumb piece; l

Fig. 8 is an elevation of an inside portion ofthe door' showing an outside operating mechanism employed when a detachable limousine part is added to the machine, and, Fig. 9 is a section through the body and door of the construction illustrated in Fig. 8.

The type of lock or securing device presently to'be described is one oted` latch or bolt member is provided with a tail-piece arrangedl to. operate the bolt from open to closed position when the bolt is closed. In the drawing, especially in Fig. 6, there is shown such a type of lock wherein B represents the or other vehicle, (as shown'in elevation Fig. l), and A represents the body or frame of the car. The door is mortised out, as shown at b,`fthe mortise being closed by the lock as well as various details of con-l wherein a pivi door of an automobile v d* when the bolt site side'bas 'of the to be described. The lockln Y bolt is designed to move through the bolt- .lugs

.the b to receive the locking bolt, presently to be described. c represents an extension of the keeper plate C and through .the edge ofthe keeper plate and extension thereis formed an opemng c2 through which the tail-piece of the bolt is adapted to pass. Mounted on the p late C, andsecurely secured by suitable mortised projections -through the keeper plate C is a metallic'lock frame C3, conveniently of U-shaped formation and .projected into the Inortise'of the door. In the oppoframe C3 there is p1voted the locking bolt D through the pivot d, of the pivot with a tail-piece d operating through the opening c2 of the keeper plate of the lock. The bolt D is'provided with a curved facin d2 which is formed on an arc,

the center of which is the pivot d. The locking portion or fastening part with a straightlocking face is andl ositioned substantially opposite to said loc -ng face is a straight shouldered part, d. .-Intermediate the shouldered part and the locking face there is formed a, notch d5 in the edge of ,the bolt D, and this notch is formed of substantially' V-shap'e for purposes presently gpart of the opening of the keeper plate C into the position shown in full lines in Fig. bars of the'frame or housing Cs are each formed withopenings or guideways C4, the rear walls of which are inclined or obliquely fashioned with'relation to the front walls, as clearly shown in Figs. 5 and 6. The open- C4 are positioned with relation to the bolt D so that the straight shouldered part is projected outward will extend over the penings or beyond `the plane of the straight edges thereof. To secure the bolt in its operative position, and also to'insure of its maintenance of the bolt in its retracted osition as well as to provide means for loc 'ng f (plt ina progressive manner, it has been oun trigger lever E, the same comprising an en 'piece e having its rear face inclined to correspond withthe inclination of the rear walls of the opening C4 of the frame C". The lever E is pivoted intermediate its ends, as at e',l toa lug e2, bent inwardly from the plate C. The upper end of the rockin bar carries a thumb piece E protecting thimble F, secured to the inner face of the door. The ,rocking bar is conveniently positioned in a groove E2 eut in thet` doorway, the lower end leading into the lock mortise of the door. With a view of positionng the operating `thumb piece somewhat back from the edge of the door, the bar E is D is formed 6. The Side rear of the upper leg inasmuch as the recess full retraction and a' convenient to employ an operatinv surrounded y a bent or offset, as shown in Fig. 3 of the drawings, although this particular arrangement is notessential.

On the edge of the frame A, representing the door jamb, there is formed the recess for thelocking portion of the bolt, as at a. The

rear

` the bolt, as shown in Fig. 5 when the door is closed.

With the p parts' of the lock or bolt retracted to a position shown in dotted lines,

- Figf, the door upon being closed carries the the locking bolt being provided on one side i the straight shouldered part d4 of the lock bolt, as shown in Figs. 5 and 6.A This shoulder d4 is eccentric to the pivot of the bolt, and the pressure of the trigger end of the lever normally tends to force the bolt outward owing to the engaging inclined surfaces above referred to. The pressure or force creating this action is conveniently attained through the medium of a coiled spring .G mounted in the door frame and engaging over a suitable projection at the of the tripping lever E, as shown 1n Fig. 2. The strength of the spring G is suilicient to carry the lower end of the tripping lever well inward and as soon as the shoulder d* is projected over or beyond the plane of the front wall of the recesses C4 there is an engagement thereof by the lower ende of the tripping lever, and C" is of suflicient length to permit a continued movement of the end e as well as an inclined movement of the lockingpart D the bolt will be forced forward until it meets-with a rm a/nd unyielding resistance, as shown in dotted lines in Fig. 6. The tongue A of the jamb plate is conveniently curved so that the end of the yond the'` curved center of the part A',

thereby effecting an interlock between the i point of the bolt and the crown of the part A. In other words a'substantially dovetail recess is formed between the strai ht face of the locking bolt and the exten ed part ofthe plate c. As above stated, this eifect is secured through the movement of the part e of the trip lever which is held in engagement with the inclined edge wall of the groove C4.

In positioning the lever E it is conveniently set so that while its lower end has an outward movement it is by virtue of the Lampes part e2 carried slightly toviewed from Figs. 5

ring of l'the 'Y and 6, and thereby caused tofollow the inclination of lheedge of the slot C4. When the bolt D is to be thrown back it is only necessary to press on the thumb piece E', which, owing to the long leverage, requires but slight pressure to compress the spring G, thus carrying the securing end e of the lever out of range of the bolt. rlFhe door is then thrown open and by its movement rocks the bolt back into the housing by which time pressure is removed from the thumb piece F, allowing the spring G to force the end e of the trip lever inward and to engage the right hand bottom wall of the notch d5 of the bolt. This will tend to impart to the bolt a final movement carrying, through the, instrumentality of the single spring G, the extreme end oftthe .locking part D of the bolt into the housing and to there retain it against accidental outward movement. 1t vwill beseen that the device, .as vabove described, is one wherein a single spring is needed and can be readily replaced should it become broken, andV so without disassembling the parts of the lock.

In some instances vit may be found convenient to employ a light spring, as H, for carrying the bolt full back into the housing. Such a spring is shown in Figs. 3 and 5 and takes -the form. of a coiled spring of U- shaped formation, having its ends pivoted in the tail of the bolt, while its innermost end is properly secured in the tang or overhanging part of the U-,shaped lock supporting part. A spring,`however, is not needed when the bolt isprovided with the trip engaging notch portion which serves the purposes of finally setting and holding the bolt in open position.

1t is now well known that the ordinary touring body of `an automobile is in many cases built to receive a limousine top, and inasmuch as the thumb piece E is located on the inside ofthe door it is desirable to have some means for enabling the operation of the trip arm or lever E from the outside.

A `convenient form is shown in Fig. 7 wherein a handle part 1 is provided with a stem i passing through Ithe front plate of the door through the spring G, and is pivotally connected to the upper end of the lever E. By pulling outward on the part 1, the` lever E is locked. Should it be desired to provide a` turning handle, as distinguished from an outwardly lmoving handle, .and to have the turning handle on the removable partofthe frame, provide a handle part J, as shown in Fig. 9, in the removable part X of the body. of the car, and to provide an extension j passing through the part X and curved to form a finger part J. A guide plate K is formed on the inside of the door,

that spring is so located that it it is only necessaryto "1 lili curved and inclined to receive the nger part J as the latter is moved in an arc of a circle through thefhandle J. rlhe finger J is thereby carried over and onto the finger piece E', and by virtue of a sprin L located in a recess in the part X abuttmg a shoulder ,Z on the stem j, the part J is moved with suicient `force onto the linger piece so as to trip the lever. In Fig. 9 the partsare shown in the position where the spring L is under comrelssion, and as soon as the point or finger g engagesthe. part E the lever E will be operated. Other arrangements may obviously be provided for enabling the user to operate the release catch from the outside.,

There are many advantages to be derived from the construction above described, among which may extreme simplicity, parts a're employed, p which is operable without the usual springs located in or adjacent to the locking members. The lock is sol formed that a perfect anti-rattler is provided and also when the parts are fully set, as shown in dotted lines Fig. 6 of the drawings, there is a union formed between the door and the jamb which prevents or at least resists in a measure any objectionable relative' movement between the two parts owing to the overhang or interlock. 1t will further be noted that any slight variations or vibrating tendencies of the parts are resisted by the wedging action of the interengaging partsmof the mechanism. 1t will also be noted that by the inclined movement of the trip or part e a wedging action is produced which at all a minimum number of the bolt and the hasp. While 1 am aware that it is old to form rocking locking bolts with tail pieces designed to operate the bolt into a closed position and also to provide suitable latch mechanism for securing the bolt in its locked position,'1 am not aware that heretofore it had ever been suggested to provide a means for adding progressively a securing device to the locking bolt with a view of properly holding the same in its closed non-rattling position. 1 am also not aware of it having heretofore been suggested to provide a single spring member for operating the bolt lock or catch which also addsthe final or full retracting movement to the bolt. 1 therefore wish it understood that the terms employed in the appended claims are not to be construed as limiting the invention to the exact construction shown and described.

Having thus described the invention what is new and desired to be secured by Letters Patent is: i

. 1. 1n alock-for vehicle doors and the like, the pombination with a pivoted locking bolt, of a fixed bearing member, and a movable may exist between and a lock is provided be mentioned that of times tends to take up any lost motion that member adapted to be moved toward the bolt through its engagement with the said ed member and be wedged between the said fixed member and the bolt to lock the bolt inany locking position.

2., In a lock for vehicle doors and the like, the combination with a carrying part, of a pivoted locking bolt thereon, and means for locking the bolt against backward movement comprising a surface inclined toward the bolt, and a movable member interposed between said surface and the bolt'.

3. In a lock for vehicle doors and the like, the combination with a frame, of a rocking bolt pivoted therein2 and means for locking the bolt in any locking position that it mayassume, comprising a member movablel toward the bolt and a fixed member with which said movable member engages for positively causing the movable member to advance toward the bolt and to retain the bolt in its forward locking position.

4. In a door lock the combination with a frame, of a rocking bolt therein, and a trip member for securing the bolt in locked posi-d tion, a spring for operating the trip in one direction, and a wedg'ing surface for moving the trip toward the bolt.

5. In a door lock the combination with a frame and a rocking bolt therein, of means for locking the bolt in its extreme locking A position and means coperatingwith said first mentioned means for causing the bolt to move inward when in an unlocked posit1on. l

l 6. In a door lock the combination with a frame member, of a rocking bolt therein, a hasp member having-a curved surface with which the locking face of the bolt engages, and spring actuated locking means for causing the end of the locking face of the bolt to project inward beyond the crown of the l y curved part of the hasp member.

In a door lock the combination with a frame member, of a rocking bolt therein, a hasp member having. a curved surface with which the loc and spring actuated means for causing the g face of the'bolt engages,

end `of the locking face of the bolt to pro Ject inward beyond the crown of the curved part of the hasp member 'and for locking the same in such position.

8. In a door lock the' combination with a door having a mortise therein, of a lock frame secured in the mortise, a rocking bolt secured in theframe, a trip lever for securing the bolt in locked position, a spring engaging'the trip lever, a thumb piece for operating the lever located on the inner face .of the door, and a guard for the thumb piece.

9. In a door lock the combination with a lock frame having side bars, of an inclined part, a locking bolt pivoted in the frame, and a spring actuated trip for locking the bolt having one face thereof arranged to engage the said inclined part.

l0. In a door lock the combination with a lock frame having a grooved side bar, one

forward edge of the lock, a rocking bolt pivoted in the frame, and a spring actuated catch lever having its end part arranged to engage said inclined portion and to be forced into holding engagement with the said locking bolt, substantially as described.

11. Ina door lock, a rotatably mounted bolt adapted to be operated manually for locking and unlocking movements, and a spring actuated trip member for locking the bolt in locked position and an inclined surface for causing the trip to engage the bolt.

12. A lock including a rotatably mounted bolt member operable manually for locking and unlocking, means for holding the bolt in locked position comprising an element for causing the said means to positively advance' signature in the presenceof two witnesses.

Y JOHN F. AWHITE. Witnessesz.

A. B. FALCH,

JAMES E. GALLAenzaR.

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