US1194637A

US1194637A - Silent door-latch

Info

Publication number: US1194637A
Authority: US
Publication date: 1916-08-15
Anticipated expiration: 1933-08-15

Description

R. m. SILENTDOOR LATCH. APPLICATION FlLED MAR. 7. i916.

Patented Aug. 15, 1916.

WITNESSES:

v To all whom it may concern:

ROBERT JOY, OF SAN FRANCISCO, CALIFORNIA.

SILENT DOOR-LATCH.

meaear.

Specification of Letters Patent.

Patented Aug. 15, 19th.

Application filed March 7, 1916. Serial No. 82,589.

Be it known that 1, ROBERT JOY, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Silent Door-Latches, of which the following is a specification.

My invention relates to a device by which the latching of doors when closed is rendered noiseless and efficient.

It consists in the formation of the contact orstrike piece of cylindrical shape and an elastic or compressible material against which the latch'conta'cts and over which it must pass while entering the keeper cavity, and over which it will pass in a reverse direction when the latch is withdrawn to allow the door to open.

It alsO comprises adjustable stops and details of construction which will be more 7 fully explained by reference to the accompanying drawings, in which- Figure 1' is a horizontal section of the door and door casing, showing the latch and the keeper. Fig. 2 is a face view, showing the cylindrical keeper and a section of the latch bolt and an adjustable stop pin. Fig. 3 is a section on the line 33 of Fig. 1. Fig. 4 is a section on the line 4-4: of Fig. 1.

It is the object of my invention to provide a silent, effective latch for doors.-

As shown in the drawings, A is a horizontal section of the door, having a cavity within which the latch 2 and its spring-actu ated shank are located and from which the latch may be withdrawn by the usual knob connection, against the pressure of the spring, and from which the latch will be forced outwardly, when released. .The operating end of the latch is triangular in the usual form and the door casing B has a plate 3 fixed to its edge having an opening through which the end of the bolt 2 may enter.

strikes the roller the latter will revolve and.

the latch will be retracted until it passes the line of the axis of the roller; then it will follow the roller around as the door closes pin.

until its spring will have forced it to the latching point. When the latch has thus passed the roller, it will be in contact with an adjustable pin 5, which is just enough below the line of movement of the back of the latch so that when the latch has reached the end "of its closing movement, the back will be in contactwith the end of this rigid When the latch is withdrawn the point is disengaged from this pin and as the door is opened the end of the latch travels over the cylindrical surface of the roller until the door is opened, the latch being shown in the open position in dotted lines in Fig. 1.

For the purpose of adjusting the pin 5, it is screwthreaded where it passes through the bearing plate 6 of the roller, and it will be manifest that-a delicate adjustment of the pin maybe had to properly receive the end of the latch bolt. The bearing plate 6 is slotted horizontally, and, by means of screws 7 the axis of the roller 4: may be moved to provide the proper adj ustment.-

, The roller or disk 4: is preferably provided with a metal bushing to prevent wear. By the adjustment of this roller to accommodate the distances between the door and the jamb I am enabled to insure the latch contacting properly with the disk as the door closes; this adjustment being important on account of doors'being fitted either close to, or at considerable distance from the j amb.

The bolt or axis of the roller 4 forms a tension screw sothat if the roller turns too freely, by turning this screw 8 the jaws in which the roller is journaled may be moved so as to squeeze the roller and increase its tension. The screws 7 also make it possible to move the roller outward-or inward to compensate for different openings between the door and the casing and to insure the bolt striking the roller in a proper manner.

.Adjustment of the pin 5 also insures the back of the latch just clearing the point of the screw as it completes its forward latching movement and allows it to subsequently rest against the pin until it is withdrawn to again open the door.

Having thus described my invention what I claim and desire to secure by Letters Pat cut is 1. The combination with a spring-pressed latch, of a roller journaled in the line of movement of the latch so that said latch will be retractedby the pressure of the roller periphery during the closing movei if) ment of the door, and a pin fixed with relation to the vroller and adjustable to be engaged by the back of the latch when the door isfully closed.

2. A latching device for doors, comprising a spring-pressed latch bolt, the end of which is adapted to pass through the latch plate on the door casing, a roller j ournaled within the latch plate with its periphery in the line of travel of the bolt, bearing plates for the axle of the roller, and screws by which said axle and the roller may be adjusted toward or from the edge of the door.

3. A latch device for doors, including a spring-pressed bolt movable in the edge of the door, a latch plate on the casing through witnesses.

ROBERT JOY. Witnesses:

J OHN H. HERRING, W. W. HEALEY.