US1778687A

US1778687A - Door-latching mechanism

Info

Publication number: US1778687A
Application number: US357572A
Authority: US
Inventors: Frederick E Radke
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-04-23
Filing date: 1929-04-23
Publication date: 1930-10-14
Anticipated expiration: 1947-10-14

Description

Oct. 14, 1930.

F. 'E. RADKE DOOR LATCHING MECHANI SM Filed April 25, 1929 WITNESSES v 2 Sheets-Sheet l W Ill 1 Frederick'l'lfiadke ATTOR NEYS Oct. 14, 1930. RADKE 1,778,687

DOOR LATCHING MECHANI SM Filed April 25, 1929 2 Sheets-Sheet 2 lNVENTOR WITNESSES FrederiekERadk w ATIQRNYs Patented Oct. 14, 1 930 FREDERICK E. Banks, on LAURELTQN, NEW YORK noon-Laronnve MECHANISM Application filed April 23,

This invention relates to ale-tolling and locking mechanism for closures such'as doors.

The principal object of the invention is the provision of an improved latching and locking mechanism designed and adapted to be used in conjunction with a closure element or door, for latching it in an opened and also in a closed position, for locking it in the closed position, for unlatching the door from the inside or outside when unlocked, and which may also be locked and unlocked from the inside or outside of the door.

lVith the foregoing and other objects in view, the invention resides in the particular provision, combinations, and arrangements ot the parts, hereinafter described and claimed and illustrated in the accompanying drawings, in which- Figure 1 is an elevation of the mechanism applied to a garage door viewed from the inside, portions being broken away.

Fig. 2 is a. vertical sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a horizontal sectional view showing the lock and latch actuating means.

1 is a sectional view taken on the line 1 1 of Fig. 8.

Fig. 5 is an enlarged 'ertical sectional view, showing the lower latch engaged with a fixed member to hold the door in the opened position.

Fig. 6 is an enlarged inside view of the lower latch.

Referring now more particularly to the drawings, it will be apparent, that there is shown a door 10 and its frame 11, it being understood that the door is hingedly mounted for movement to the opened and closed positions. The mechanism of the present invention is applied to the door 10, and nearly all of the parts are secured or arranged on the inside of the door with others applied to the frame and door sill.

The means for latching and unla ching the door 10 includes a bracket member 12 fixedly secured to the inside of the door near the upper edge and also near the tree vertical edge thereof. A latch member 13 is pivotally mounted as at 14 on the bracket member 12. One section of a rod 15 is pivotally connected 1929. Serial No. 357,572.

at 16 with the latch member 13, and is bracket member 12. A coil spring 17 surrounds the rod section and has one end thereof in engagement with the bracket and the opposite end thereof in engagement with the pivot 16. The spring 17 normally and yieldingly retains the latch member 13 in a latching position so as to be engageable with a fixed member 18 positioned on the frame 11, when the door 10 is swung to the closed position. It is to be understood that the bracket member 12, latch member 123, spring 17, and the fixed member 18 constitute the upper latch. A lower latch is employed and includes a bracket member 19 secured to the inside of the door near the lower edge thereof. A latch member 20 is pivotally mounted as at 21 on the bracket member 19, and projects laterally inward. A link 22 has one end pivotally connected as at 23 with the latch member 20 and the opposite end thereof is pivotally connected as at 24; with a rocker 25, whose fulcrum 26 is supported by the bracket member 19. One end of the rocker engages a stop 27 on the bracket member 19 to limit the rocking movement of the rocker 25 in one direction by the action of a spring 28 having one end connected as at 29 with the rocker 25 and the opposite end thereof being connected with the bracket member 19 as at 3 A latch member 31 is pivotally mounted as at 32 on the bracket member 19, and projects tothe outside of the door through an opening in the door. engagement with the latch member 31 to normally and yieldingly retain the same in a latching position, and also serves to normally and yieldingly retain the latch member 20 in a latching position, the latter feature being accomplished through the intervention 01' the rocker 25 and link 22. The lower end of the rod 15 is pivotally connected as at 33 with the latch member 31. At this time attention is called to the fact that the spring 17 of the upper latch cooperates with the spring 28 to retain the latch members 20 and'31 in the latching positions. The upward movement of the rod 15 isv limited by a'pin 34 carried by the rod 15, the said pin 84 being engage The rocker 25 is constantly kept in able with the bracket member 12. The rod 15 has a handle 35 for effecting the movement of the rod 15 downwardly, which will cause the

latch members

13, 20 and 31 to move to positions enabling unlatching of the door, whether in the closed or opened positions. In this connection it is to be observed that the latch member 20 engageable with a fixed member 36 on the sill 87, and the latch member 31 is engageable with a fixed member 38 properly positioned to hold the door in the opened position. It is to be understood that each 01' the latch members will be presented with a cam surface 39 causing movement thereof from the normal position to clear the related fixed member with which it latches in response to the movement of the door.

Means additional to the handle 35 may be provided for actuating the rod from the outside of the door, such as the actuator d0 which is pivotally mounted as at ll on a lug 42 attached to the door 10.

In order to lock the upper and lower latches against being operated, there is provided a locking device 43. This locking device may be of any of the types available on the market, and is preferably of the key and spring actuated type. The device 43 will essentially include a bolt 44-. capable of being retracted by a key 45, indicated in dot and dash lines in Fig. 4, from the outside of the door. The bolt n may also be retracted by manipulating a. knob 46 on the inside of the door, inasmuch as the device 43 will be secured to the door on the inside. The device 4-3 also includes a check or catch d7 which may be manipulated to hold the bolt 44: in the retracted position or to release the same to the locking position. The bolt let is engageable in the notch l8 of a member 49 connected in the rod 15, when the rod is in its normal position, as shown in Figs. 1 and 2.

From the foregoing it will be apparent. that when the door 10 swung to the closed position, the latch members 13 d will be engaged respectively with their related fixed

members

18 and 36, thereby latching the door 10 in the closed position. Upon manipulation of either the handle or the actuator d0 said latch members 13 and 2t may be disenq'aged in order that the door In may be opened. It will also be apparent that by pressing on the latch member 31 with the foot a similar result will be accomplished. It will also be apparent that the door 10 may be latched in the opened position. by the engagement of the latch member 3i with the fixed member 38, and that by pressing downwardly With the foot on the latch member 31 it may be disengaged from the fixed member 88, to permit the door 10 to be swung to a closed position in which it will be latched by the engagement of the

latch members

13 and 20 with their related fixed

members

18 and 36.

It is to be understood that the invention is not restricted to the precise arrangement of parts shown and described, as details of construction may be modified and rearranged without departing from the spirit of the invention, the scope of which is limited only by the terms of the appended claim.

I claim:

A latching device comprising a bracket member adapted to be fixedly secured, re versely arranged pivoted late-h members on said bracket member to engage separate lixcfi: members, a rocker on said bracket member engageable with the first latch member, a link interposing said rocker and second latch member, and a spring acting on said to retain it and the link normally so as to yielding'ly retain the latch members in latching positions.

FREDERICK E. RADl'IE.