US2422723A - Closure fastener - Google Patents

Description

' June 24, 1947. AJ-T'. FISHER CLOSURE FASTENER Filed Jan. 29, 1946 Patented June 24,1947

UNITED STATES PATENT OFFICE;

CLOSURE FASTENER Albert T. Fisher, Hartford, Conn.

Application J anuary. 29, 1946, Serial No. 644,034

2 Claims.

The present invention relates to closure fasteners and originally was part of my application for Letters Patent Serial Number 556,823, filed October 2, 1944. It is here set forth in a separate application as a continuation-in-part thereof.

The primary object of the invention is to provide a window fastener with an efficiently acting locking action to preventlunfastening from out side.

A further object of the invention is to provide a device of the character referred to of simpler and more compact construction than prior devices.

With the foregoing and other objects and advantages in view, the invention consists of the novel construction and arrangement of parts hereinafter described and claimed.

In the accompanying drawing illustrating the invention- Figure 1 is a top plan view of the device in operative position.

Figure 2 is an end elevation thereof.

Figure 3 is a bottom plan view thereof.

Figure 4 is a vertical section on line 4-4 of Figure 1.

Figure 5 is a detail perspective view of the swivel-bolt holding plate.

Like numerals in the description and drawing designate the same parts of construction.

The complete fastener is made in two parts, that designated by the numeral I and designed to be secured on the top rail A of the lower sash of a window and that designated by the numeral 2 on the bottom rail B of the upper sash. These parts are screwed in place on opposite sides of the meeting edges of the sashes so as to be in juxtaposition by screws Ia and 2a respectively (see Figure 1).

Each of said parts or members comprises a hol- 'low base of suitable height and elongated. On

the top of part or member I and midway the ends, aswivel latch 3 is mounted detachably on aperpendicular bolt 4 which projects through the top of the base of part I. A removable,tapered cotter pin 5 is passed through the latch and bolt, horizontally, to fasten the two elements together so that rotation of thebolt 4 is caused by the swivel movement of thelatch 3. Projecting perpendicularly on the opposing motor 2 is a loopedkeeper 6 for said latch. It is positioned about midway of the ends of the base member 2 and is preferably arched or looped upwardlyand provided interiorly with an arcuate side 1, designed to contact with the inner edge of the latch which is also arcuate. The are of the latch is The keeper structure shown is substantially'the same as that part of the invention retainedin said application Serial Number 556,823 of which the present application is, as previously stated,

a continuation-in-part. 1

Projecting laterally from thelatch 3 is an in-.

tegral finger grasp 8 with a perpendicular fiat end. The swivel movement of the latch in each direction is limited bystop lugs 9 projecting from the top of the base I. The base is open at the bottom and interiorly it is provided with two depending studs or lugs l0 suitably spaced apart and positioned longitudinally of the base. They are slit Vertically, as at H (see Figure 3), for the reception of an elongated resilient metal blade or leaf spring I2, which impinges the facets of a polygonal enlargement I3 (preferably square, as shown) onbolt 4.

Bolt 4, which is provided with a reducedlower end portion 4, is inserted upwardly through an opening in the base member I and its reduced lower end portion is fitted rotatably in an opening [4 in a flanged plate [5. This plate is set in the base with its flanges uppermost and saidend portion 4 of thebolt 4 is upset or flared for endwise retention in the opening M of the plate, which opening is correspondingly flared and by which provision the bolt is freely rotatable. When the bolt is emplaced in the opening of the base member I and thelatch member 3 applied thereon, secured by thecotter pin 5, the plate I5 is drawn up in place tightly and holds spring I2 in place.

Preferably, as shown, the base member I is provided with oppositely disposed lugs l6 arranged in pairs on opposite sides of theswivelbolt 4, and the same serve to support the plate l5 at different points between its ends when it is applied in place.

In operation; the latch when swung to open or closed position, rotates the polygonal body portion [3 under pressure of the spring I2. In one of said positions the latch is effectively locked with the keeper and is safe against outside tampering. In the keeper disengaged position of the latch the same is so held by the spring l2, which latter is practically effective in both the locked and unlocked positions of the latch.

It will be obvious that the invention may be used on various types of windows, such as the ordinary vertically sliding kind with upper and lower sashes, and also casement windows and the like.

Having thus described my invention. What I 3 claim as new and desire to secure by Letters Patent is:

1. A closure fastener comprising a latch section attachable on one window sash for locking engagement with a keeper section attachable opposedly on a companion sash, said latch section having an arcuate latching member constructed to engage th keeper section, a rotatable swivelbolt secured removably to said latch section and having a, polygonal body enlargement and to which bolt the said latching member is detachably secured so as to rotate thereby and therewith, an elongated, flat spring element operatively mounted at its opposite ends on supporting studs provided at opposite sides of said swivel-bolt with the middle portion *of said spring element bearing constantly flatwise on said polygonal body enlargement of the bolt, a removable plate constructed to fit within said iatch section and retain said swivel-bolt against longitudinal movement while permitting free rotation of the bolt, and projecting stops positioned on the top of said latch .section to limit the swingingmovement of the latchin member .on said swivel-bolt.

2. A closure fastener comprising a latch section to cooperate with ;a separate opposed keeper section having an engageable holding member,

4 a swin gable lever arm pivotally mounted on the latch section and having an arcuate catch member projecting laterally therefrom for engagement with the holding member of the keeper section, a polygonal shaped element carried fixedly on the pivot of the lever arm, a pair of bifurcated studs on the latch section on opposite sides of the pivot of the lever arm, an elongated, single piece, straight, leaf spring having its end portions received 'in the sbifurcated end portions of said studs "with the intermediate portions of the spring disposed in face contact with the polygonal element on the said pivot, so as to yieldably hold the lever arm in its keeper enaged and disengaged positions.

ALBERT T. FISHER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 935,389 Mitchell Sept. 28, 1-909 910 850 Peti'ie l Jan, 26, 1909 1,339,362 vLfHeureux May 4, 1920 112,717 .Judd. l... t Mar. 14, 1871 1,535,226 Jackson l Apr. 28, 1925

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