US2080000A - Hook latch for sliding doors - Google Patents

Description

May 11, 1937. G. w. APPLE HOOK LATCH FOR SLIDTING DOORS Filed May 27, 1935 lnvenlor L e urge!!! A vie A Homqy Patented May 11, 1937 were diATES i. i:FENT OFFIQE 1 Claim.

This invention relates to hook latches.

The primary object of the present invention is to construct a hook latch so that the swinging radius of the hook may be changed in order that sliding doors that usually bulge outwardly at the center may be drawn to a snug fit with respect to the door frame, and to further provide a means for latching or holding the hook clamped firmly in the door.

Another feature of the present invention is the characteristics thereof that permit the hook to be mounted on one sliding door and the keeper for the hook be mounted on the abutting sliding door and by means of the changeable radius of the hook the abutting doors may be latched in firm position so that the hook cannot be tampered with from the outside.

Further objects of the invention are to provide a latching hook of the character referred to that is strong, compact and durable, having very few parts to need repair, that may be used as a latching hook on either the right hand door jamb or the left hand door jarnb, that is very simple to operate, and that is comparatively inexpensive to manufacture and install.

With the foregoing and other objects in view the invention consists of a novel construction, combination and arrangement of parts as will be hereinafter more specifically described and illustrated in the accompanying drawing wherein is disclosed an embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to without departing from the spirit of the claim hereunto 35 appended.

In the drawing wherein like reference characters denote corresponding parts throughout the several views:

Figure 1 is a view showing the latching hook 40 of the present invention in top plan view applied to a door jarnb and showing the end of the sliding door in vertical section.

Figure 2 is a side elevation of the door jarnb y and a fragmentary portion of a sliding door show- 40 ing the part of the present invention in side elevation.

Figure 3 is a perspective view of the plate l4.

Figure 4 is a fragmentary side elevation of two sliding doors showing an adaptation of the present invention therewith and illustrating a modified form of keeper plate.

Figure 5 is an edge view of the modified form of the keeper plate illustrated in Figure l.

55 Referring to the invention as applied to a door jarnb and the end of a sliding door, A indicates the door jarnb and 13' indicates a sliding door. In this form of the invention to make a keeper it is necessary to form an elongated recess 1 in the door adjacent to the sweep of the latching 5' hook in accordance with the present invention. On the inner face of the door there is a keeper plate 8 bridging the recess l which plate is formed with a slot 9 registering with the recess 1. Slot 9 terminates above the lower end iii of recess 1 10 so that the prong on the hook to be presently described may be clamped against the inner face of the plate 3 as illustrated in Figure 1 of the drawing. The plate 8 is countersunk in a recess i l in the inner face of the door, so as to seat 15 flush with the inner face. A plate I2 is secured to the outside face of the door and both plates are secured together by the bolts I3 one to each side of the recess 1. These bolts extend through openings in the door. 20

To the jamb A of the door frame is secured the flat anchor plate M. One of the ends of the plate is formed with an upstruck flange 15 perpendicular to the plate. The flange [5 extends transversely of the plate and in the center there- 25 of is a notch It]. The edges of the flange decline in opposite directions from the notch IE to form cam edges ll. Adjacent the flange the plate is formed with an opening I8 that receives the screw l 9 by which the plate is attached to the jarnb A. Adjacent the other end, the plate I4 is formed with an opening 20 and through this opening extends the shank of the pivot screw 2!.

An operating lever 22 is pivoted on the projecting shank of the screw 2| and there is a bearing bushing 23 between the upper face of lever 22 and the head of screw 25. The threaded end of the screw extends through the opening 20 in the plate and is anchored in the door jarnb thereby holding the plate l4 in rigid relation. The latching hook is indicated generally at C and includes a relatively straight shank 2 pivoted at the inner end on a bolt 25 carried by the free end of the lever 22. Nuts 26 mounted on the bolt 25 allow the hook to be removed and turned 180 degrees so that the same may be used for a right or left hand application to the door. On the outer end of the latching hook C the shank 24 merges with a prong 2'! that is substantially perpendicular to the shank 24 and the prong terminates in a round nose 28.

The free end of the lever 23 is formed with a handle loop 20. The intermediate portion outwardly oi the pivot 2| rides over the cam edges 55 I1 on the plate l4 and seats in the notch l6 whereby the hook is latched in clamped relation holding the middle of the door snugly against the outer edge of the jamb A. To change the sweep or radius of the latching hook C where the sliding door B bulges outwardly from the jamb, the lever 22 may be sprung out of the notch l 6 toward the right as shown in Figure l and the vprong 2i inserted through slot 9 to the position indicated in Figure 1. In this position the lever 22 may be swung to the left until the lever seats in the notch E6 in which position the latching hook C will have been drawn toward the left thereby taking the bulge out of the door and clamping it firmly against the jamb A.

In applying the invention to double doors the adaptation is illustrated in Figure 4 of the drawing where D indicates one sliding door and E indicates the other sliding door. These sliding doors are in closed position when the confronting edges are in abutment as shown in Figure 4 of the drawing.

In using the invention on double doors the anchor plate i4 is applied to the inner face of one door D so that the latching hook C will have a range of radius suitable to the exigencies of the fit between the doors.

A modified keeper member for the double doors is indicated at F and consists of a fiat plate 39 formed with an outstanding sleeve 3! on one end. The plate is secured to. the inner face of the other door E by means of screws 32. Plate 30 is secured to the door E substantially in a horizontal plane and the sleeve 3! will lie in close proximity to the edge of the door in the path of the latching hook C.

It is well known that double doors do not have a very snug fit between the confronting edges thereof. In using the latching hook of the present invention on double doors the doors are closed as far as is possible. Then the lever 22 is moved to the right until prong 21 on the hook registers with the sleeve 3 I. By moving the lever 22 to the left the prong 21 clamps sleeve 3! and draws it inwardly thereby drawing the doors together. When the lever 22 is brought into registry with notch Hi the lever snaps into the notch whereby the doors are latched in snug fitting relation.

Having thus described the invention, what is claimed as new is:

A door fastener comprising an oblong plate having a flat body portion adapted to be anchored to one face of a door, one edge across the minor dimension of the plate being upturned perpendicular to the fiat body portion and notched in the center to provide an integral notched locking flange, the free edges of the flange on each side of the notch declining toward the edges of the major dimension, a straight lever of greater length than the plate and pivoted intermediate its ends to an intermediate portion of the plate so that the sweep of the outer end describes an are located outwardly of the locking flange on the plate, said outer end of the lever formed with an operating handle and a portion adjacent thereto. having wiping engagement with the said declining edges and seating in said notch of the flange in one position, a latch member formed with a hook on one end adapted for engaging a keeper plate and the other end of the latch member pivoted to the inner end of the lever in eccentric relation to the lever pivot.

GEORGE-W. APPLE.

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