US1384620A

US1384620A - Door-latch

Info

Publication number: US1384620A
Application number: US342985A
Authority: US
Inventors: Mcvittie Henry
Original assignee: JOSEPH R TRIPOLI
Current assignee: JOSEPH R TRIPOLI
Priority date: 1919-12-06
Filing date: 1919-12-06
Publication date: 1921-07-12
Anticipated expiration: 1938-07-12

Description

H. McVITTIE.

DOOR LATCH.

, APPLICATION FILED DEC. 6, 1919. 1,384,620. Patented July 12, 1921.

' 2 SHEETS-SHEET I.

.zz Q7A L 7 z g E H. MCVITTIE.

DOOR LATCH.

APPLICATloN FILED DEC, 6. 1919.

1,384,620, Patented July 12, 1921.

2 SHEETS-SHEET Z.

UNITED STATES PATENT oFFlcE.

` HENRY MGVITTIE, 0F BEND, OREGON, ASSIGNOR 0F ONEZHALF T0 JOSEPH TRIPOLI, OF BEND, OREGON.

DOOR-LATCH.

Specification of Letters Patent.

Patented July 12, 1921.

Application led December 6, 1919. Serial 342,985.

To all whom/12mg concern:

Be it known that I, HENRY MCVITTIE, a citizen of the United States, residing at Bend, in the county of Deschutes and State ol' Oregon, have invented certain new and useful Improvements in' Door-Latches; and l do hereby declare the following to be a f ull, clear, and exact description of the lnvention, such as will enable others skilled in the art to which it appertains to make and use the same. y :mi

This invention relates to new and useful improvements in door latches, and has for one of its objects the provision of a button upon each side of the door for retractmg a spring latch bolt from its keeper by pulling on one of the buttons and pushing on the other` button, and said buttons are so arranged with respect to the swinging of the door that when pressure is' made on the push button it will swing the door open after the retraction of the latch bolt, and a pull exerted on the pull button will open the door after the retraction of the latch bolt.

Another object oi this invention is the provision of a door catch of the above stated character which shall be simple, durable and elicient, and which may be manufactured and sold at a comparatively low cost.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain i novel features of construction, combination,

and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which- Figure 1 is a front elevation of a door illustrating a catch applied thereto and con-l structed in accordance with my invention, .x

Fig. 2 is an end view of the door illustrate ingwthe pull and push buttons to the catch,

ig. 3 is a plan view of the catch with one1 section of the casing removed,

Fig. 4 is a transverse sectional view illustrating springs for normally urging the catch bolt outwardly of the casing,

Fig. 5 is a plan View of one of the sections of the casing,

Fig. 6 is a perspective view of the -latch bolt,

Fig. 7 is a plan view of the actuating rod.'

Referring in detail to the drawings, the

numeral 1 indicates a door frame having hlnged thereto la swinging door 2 of any desired construction. The door 2 at its free end is provided with a slot 3 that opens outwardly through the free end of the door to slidably receive a casing 4. The slot 3 has concaved walls and the casing 4 is of substantially cylindrical shape and is adapted to be slid within the pot 3 from the free edge of the door and be h 1d therein by the concaved walls of the sl t. The frame 1 adjacent the slot 3 is prov ded with an ordinary keeper 4 adapted to receive a latch bolt 5. The casing 4 consists/ of a pair of substantially T-shaped sections, the arms of which project beyond each side of the slot 3 while the leg portion is confined within the slot. The leg portion of each of the sections is provided with a groove 6 to slidably receive the latch bolt 5, and which groove also extends into the arm portions of said sections. The arm portions of the sections of the casing are provided with grooves 7 that communicate with the grooves 6 and one portion of the grooves 7 of each of the sections is provided with an enlarged portion 8 defining a straight shoulder 9 while the grooves 7 are cut away as illustrated at 10 to form an inclined shoulder 11. An actuating rod 12 is slidably mounted within the groove 7 and projects beyond each end of the arm portion of the T-shaped casing and has secured to its ends finger grips or knobs 13. Ashoulder or cam 14 is formed upon the actuating rod 12 land has an inclined face 15 anda straight shoulder 17 which straight shoulder is adapted to abut the straight shoulder 9 for limiting the movement of the actuating rod in one direction, while the inclined shoulder 11 is adapted to be engaged by the inclined face 15 of the shoulder 14 for limiting the movement of the actuating rod in the other direction.

The latch bolt 5 consists of a head 18 having the usual inclined striking face 19 and said head has secured to its side faces a substantially U-shaped strap 20, which strap receives the actuating rod 12 and is slidably received within the groove 6 of the casing. A block 21 is secured within notches 22 formed in the walls of the groove 6 of the casing and is engaged by an expansion spring 23 which is disposed between the arms of the strap 20 and has its other end bearing against the head of the locking bolt,

so that the spring normally urges the locking bolt outwardly of the casing for engagement with the keeper 4. The normal position of the actuating rod 12 is with the shoulder 17 against the shoulder 9 of the casing and with the strap 20 at the beginning of the inclined face of the shoulder 14 so that upon pushing the actuating rod in one direction, the locking bolt 5 will be retracted against the tension of the spring owing to the strap 20 riding against the inclined face of the shoulder 14., thus retracting or disengaging the locking bolt from the keeper 4 permitting the door to be swung open.

It is to be noted that the normal position of the actuating rod is that one of the push buttons 13 is in close proximity to the casing, while the other one is spaced a considerable .distance therefrom so that it is necessary that you push upon one of the push buttons and pull upon the other button to retract the latch bolt.

The push and pull buttons 13 are arranged on the proper sides of the door so that when it is desired to open the door from the inside, pressure is exerted upon the push button which retracts the bolt and also swings the door open and when operated from the outside a pull is exerted upon the pull button, retracting the latch bolt, and also pulling the door open.

From the foregoing description, taken in connection with the accompanying drawings, it will be noted that this device can be readily and'conveniently applied to doors of different characters, such as automobiles, carriage and house doors.

Plates 25 are secured to the door 2 and overlie the slot 3 and have slots 26 to engage the casing 4 and also receive the actuating rod. The plates prevent the casing 5 from being pulled out of the slot of the d oor when the door is in an opened position.

While I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination, and arrangement of parts may be made without departing from the spirit and scope of the invention as claimed.

Having thus described my invention what I claim is A door latch comprising a T-shaped casing having communicating grooves in its leg and arm portions, straight and inclined shoulders located in the groove of the arm portion and arranged on opposite sides of the groove in the leg portion, an actuating rod slidable in the groove of the arm por tion, a spring pressed bolt in the groove of the leg portion, a strap secured to the bolt and surrounding the rod and a cam on said rod and having straight and inclined faces HENRY MGVITTIE.

Witnesses:

J. M. LAWRENCE, S. DEBURG.