US1704770A - Door latch - Google Patents

Description

Marc h 12, 1929. J. soss 1,704,770

DOOR LATCH Filed May 14, 1926 INVENTOR 7 58791 505s ATTORNE Patented Mar. 12, 1929.

PATENTFO FF-ICE.

JOSEPH 8088, O1 BROOKLYN, NEW YORK.

DOOR LATCH.

Application filed May 14,

' This invention relates to door latches and particularly to devices of this class for use in connection with the doors of motor vehicles; and the object of the invention is to provide,

a door latch with means cooperating with the bolt of a lock mounted in a door to provide an anti-frictional engagement of the bolt with said means and further to compensate for any movement of the bolt with reference to the latch in any direction; a further object being to provide a latch device wit-h one or more steel balls in connection with which the bolt of a lock is adapted to operate when the door is in closed position; a still further object being to provide in combination with a latch device employing an anti-frictional member, 'a latch bolt havin two beveled sides, the bevel on one side being slight with reference to the longitudinal plane of the.

bolt and said side cooperating with the antifrictional member of the latch in such manner as to retain the latch bolt in connection with said anti-frictional member under tension at all times; and further in theprovision of a straight face on said side of the bolt arranged in parallel relation with the longitudinal plane of the bolt; a still further object being to provide a latch 'device employing at the outer end thereof a raised beveled portion over which the inner beveled side of the bolt is adapted to pass, said raised portion forming an auxiliary latch stop, and inwardly of said raised portion, the latch device is provided with an anti-frictional device engaging the straight or slightly beveled side face of the bolt to retain the door in closed position and under tension; and with these and other objects in view, theinvention'consists in a device of the class and for the purpose specified, which is simple in construction, eflicient in use, and which is constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the sepa rate parts of in improvement are designated by suitable re erence characters in each of the views, and in which:

Fig. 1 is a face view of a door frame showing one form of latch device mounted in connection therewith.

1926. Serial No. 109,047.

Fig. 2 is a partial section on the line 22 of Fig. 1 and illustrating a part of the door and the bolt thereof in closed position, and in dotted lines, in a partially closed position.

1* 1g. 2* is a detail view similar to Fig. 2 but showing a modification.

Fig. is an inside view of the latch device shown in Figs. 1 and 2. Fig. 4 is a view similar to Fig. 1 but showmg a mod fication.

g. 5 s a section on the line 5-5 of Fig. 4.

Fig. is a view similar to Fig. 1 but show- 111 a slight modification. F g. 7 is an end view of the device shown in Fig. 6. Fig. 8 is a view similar to Fig. 2 but showing another modification.

Fig. 9 is a -section on the line 99 of Fi 8; and, b Fig. 10 is a view similar ng another modification.

In the drawing, I have indicated. at 11 the framework of a door in connection with which the latch device 12 is mounted as seen in Fig. 2 of the drawing. At 13, I have indicated a part of the door having a latch bolt 14, which in the construction shown in Fig. 2 of the drawing, is provided with a beveled inner face 15 and a slightly beveled outer- face 16, 30 while in Fig. 2 of the drawing, I have shown a modified form of bolt 14 having a beveled inner face 15 and a slightly beveled outer face 16 which terminates inthe outer end of the bolt in a comparatively straight face 16" arranged in parallel relation with reference to the longitudinal plane of the bolt or movement of the bolt.

The latch device 12, in the construction shown in Figs. 1 to 3 inclusive, is preferably fashioned from sheet metal to form at the outer end thereof a raised beveled face 17 having a screw aperture 18 adjacent its outer end for receiving an attaching screw 19. The inner end of the raised portion 17 terminates in a stop shoulder 20 forming an auxiliary stop for the bolt 14 to retain the door 13 in a partially closed position. Inwardly of the stop 20, the device is fashioned to form a pair v of oppositely arranged ears 21 by curling the metal from which the stop evice' 12 is 70 to Fig. 9 but showformed, and -so fashioned to provide between the cars 21, a seat for a steel ball 22 the periphery of which projectsbcyond t e inner faces23 of the ears 21 as clearly seen in Figs. 1 and 2 of the drawing, whereby the outer bevel face 16 of the bolt 14 is adapted to engage said ball to lock the door 13 in its closed position. Itwill be understood that the bolt 14 is of the usual spring pressed type normally projected by the action of the spring and-the beveled face 16 istsuch as to provide a tensional engagement of the bolt 14 with the ball 22 at all times, the bevel face compensating for any wear that may-prevail in the extended use of the door, the bevel face 16 being at such an angle as to prevent the opening of the door until the bolt 14 has been retracted by the knob or handle usually employed for this purpose. With the structure shown in Fig. 2*, it will be apparent that the bevel face 16 will compensate for the wear on the bolt and in the initial position of .the parts, the bolt 14 or 14 is held inwardly of its normal extreme outward movement by thebevel faces 16 and 16*. I

The space formed between the ball '22 and the stop shoulder 20 is adapted to receive the bolt 14, and the latchdevicewithin this space is provided with a screw aperture 24 for receiving a screw 25 to aid in securing the de-' vice to the door frame 11 as will be apparent. It will also benoted on a consideration of Fig. 2 of the drawing, that the bottom portion of the latch plate is fashioned to form a seat for the ball 22, as seen at 26.

With the construction shown in Figs. 6 and 7 of the drawing, the attaching device is of.

the same general contour as the device shown in Figs. 1 to 3 inclusive except that the device is made from a solid piece of metal by molding, die-casting or forging, or in any other desired manner. With this construction, theears 21 are joined and reinforced by the formation of the "arc-shaped recesses 27 in the opposite sides thereof, one of which recesses is seen in Fig. 7 of the drawing. In Figs. 4 and 5 of the drawing, I have shown another modification of the construction shown in Figs. 1 to 3 and 6 and? wherein two balls 22 are supported in a comparatively wide latch plate instead of one ball as shown in said other figures. In this construction, the cars 21 are more widely spaced apart by the greater width of the body of the device 12 and interposed between said cars is a. spacing member 28 secured to the latch plate by riveting or in any other manner as seen at 29, and the opposite faces of the member 28 are provided with arc-shaped recesses 30 to receive the balls 22". It will be understood that the structure shown in Figs. 4 and 5 is intended for use in connection with comparatively wide latchbolts such as the bolts 14 and 14. In Figs. 8 and 9 of the drawing,

' I. have shown .another modification wherein a latch device 31 ,is fashioned from a solid body of metal as in the formation of the latch devices shown in Figs. 4, 5, 6 and 7, the outer end ortion being fashioned to form a raised 'beve ed face 32 similar to the bevel face 17, and which terminates at its inner end in a stop shoulder 33 similar to the shoulder 20. In spaced relation totheshoulder 33, the device 31 is provided with a raised body 34 at its inner end within which is permanently against displacement from the body 34 by the seat 36 in said body in which seat; the roller rotates.

In Fig. 10 of the drawing, I have shown another modification wherein the inner end portion of a latch plate 37 is provided with spaced cars 38 in which are mounted screws 39 havin conical adjacent ends ada ted to enter sim lar recesses 40 in the opposite ends of a roller 41 mounted within and between said ears 138. It will be iinderstood that the screws 39 serveto retain the roller 40 in position and also permits of-the rotation of said roller on said screws. From the foregoing it will be apparent that when the balls are employed, the latch bolt in its several movements thereof caused by vibration or the like and when the'door is in closed posi tion, may operate upon the bearing balls universally to eliminate friction noises of any kind or class that might otherwise prevail when the latch 'bolt would slidably engage a stationary body on a latch bolt. With the rollers employed, movement of the latch bolt longitpdinally of the bolt action will operate to prevent noises and reduce friction between saidparts in such operation. 7 It will be understood that my inventionis not necessarilylimited to the specific structural details herein shown and described, nor the specific contour of the latch device or the manner of its making, nor am I- necessarily limited to the specific form of. latch bolts herein shown and described, and various changes in and modifications of the construction herein set out may be made within the'scope of the appended claims without departing from the spirit ofvmy invention on of Figs. 2 and 3 of the drawing that the latchv sacrificing its advantages.

It will be noted upon a consideration or lock bolt 1414 extends beyondthe axis of theball22 with'relation to a line extend;

- devices employed to-efiect the locking of the' w door or retainin the same a ainst accidental displacement.- t will'galso' enoted that in the outward movement of the bolt 14 by its position in said door frame, and said latch ,usual spring, and the -.engagement of the beveled face 16 with the ball 22 or. the other anti-frictional device-employed, a wedge-like action is produced between the two movable bodies to firmly wedge and lock the bolt in position and to retain the same in such position under tension, I Having fully described my invention, what I claim as new and desire to secure by Letters Patent, *is:

, 1. A latch device comprising a lbod adapted to be secured to a door frame, a ba I mounted in fixed position in said bodyand rotatable in its support and against which the outer side face of the latch bolt of a door is adapted to rest when the door is in'a closed device being provided outwardly of said ball with a beveled striking face having a stop shoulder in conneciton with which the latch position.

bolt is adapted to operate to form an auxilia door catch for retaining the door in a partially closed position.

2. A latch of the class described comprising a body, one end of which is fashioned to form a beveled striking face terminating at its inner end in a stop shoulder, means at the-other'or, inner end of the device for supporting an anti-frictional member therein which projectsbeyond the inner face of the device and in connection with the projecting end of which a latch bolt of a door is adapted to operate in retaining the door in closed 3. A latch of the class described comprising a body, one end of which is' fashioned .to form a beveled striking face terminating at its inner end in a stop shoulder, means atv the other or inner end of the device for supporting an antl-frlct-ional member therem which projects beyond the inner face ofthe device and in connection with the projecting end of which a latch bolt of a door is adapted to operate in retaining the door in closed position, and means for securing said latch device to the frame of a door.

4. Alatch of the class described comprising a body, one end of which is fashioned to form a beveled striking face terminating at its inner end in a stop shoulder, means at the other or inner end of the device for supporting an anti-frictional member therein which projects beyond the inner face of the device and in'connection with the projecting end of which a latch bolt of a door isadapted to operate in retaining the door in closed position, means for securing said latch device to the frame of a door, and said antifrictional device comprising a steel ball whereby relative movement of the latch bolt may be compensated for by the rotary movement of said ball. I

' 5". The combination with-a-;door' and a sprin actuated bolt carried thereby, said bolt i'aving its'inner face beveled and its opposite or outer face "slightly beveled, of a latch device ,adapted to be secured to the ipi'in actuated bolt carried thereby, said o t having its inner face beveled end its opposite or outer face sli htly beveled, of a latch device adapted to he secured to the door frame and provided at its inner end with projecting anti-frictional means in connection with which the outer face of the bolt is adapted to operate for retaining the door in closed position, and means on said latch device outwardly of said anti-frictional means for forming an auxiliary stop.

7. The combination with a door and a spring actuated bolt carried thereby, said bolt having its'inner face beveled and its opposite or outer face slightly beveled, of a latch device adapted to be secured to the door frame and provided at its inner end with projecting anti-frictional means in connection with which the outer face of the bolt is adapted to operate for retaining the door in closed position, and means on said latch device outwardly of said anti-frictional means for forming an auxiliary stop, said last named means involvinga beveled face over which the bolt isadapted to pass prior to'its engagement with said anti-frictional device. 1

.8. The combination with the spring actuated bolt of a door lock, said bolt having a slightly beveled outer face, of a latch deyice provided with anti-frictional means adapted to be. engaged by said beveled face of the bolt to firmly secure and retain the bolt in position when the door is closed, and said latch device having an auxiliary stop outwardly of said frictional device adapted to be engaged by said bolt to retain the door in a partially closed position.

9. A door latch of the class described, the inner end portion of which, when mounted in the door frame and with reference to the 'swinginfgxmovement' of the door is provided with a edly supported and rotatable antifrictional device which projects beyond the inner end of said latch whereby in the engagement of the latch bolt therewith when the door is closed, said bolt is free to engage the projecting portion of said'anti-frictional device only.

10. A door latch of the class described,

I projects beyond the inner end of said latch.

whereby in the engagement of the latch bolt jecting portion of said anti frictional de- 5 vice only, and the outer end portion of the latch being provided with an inwardly bev- 4 eled surface, terminating in a supplemental stop shoulder arranged on said latch ont- Wardly of said anti-frictional device. therewith, said bolt 1s free to engage the pro- In testimon that I claim the foregoing as 10 my invention havesigned my name this 7 th day of May 1926. r

JOSEPH Sosa.

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