US1948542A - Sash lock - Google Patents

Description

Patented Feb. 27, 1934 UNITD STATES SASH LOCK Walter C. Repass, Portland, Oreg., assignor to National Ventilating Window Lock Company, Portland, Oreg., a corporation Application March 28, 1932. Serial No. 601,638

1 Claim.

This invention relates to sash locks and has for an object the provision of a lock by means of which a window sash may be locked in either open or closed position, so that a window may be left open for ventilating purposes and held against further opening movement.

Another object of the invention is the provision of a lock, which in addition to the above and other advantages, is simple in construction, reliable in use and may be readily secured to a window sash.

With the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claim.

In the drawing:

Figure 1 is an elevation showing a pair of window sashes with-the invention applied.

Figure 2 is a fragmentary View partly in section showing the sash lock in plan.

Figure 3 is a sectional view taken substantially on the line 3--3 of Figure 2 but showing the sash lock in open position.

Figure 4 is a section taken substantially on the line 4-4 of Figure 3 with the sash closed.

Figure 5 is a section on the line 5--5 of Figure 4.

Figure 6 is a fragmentary view showing a slightly different form of the invention.

Referring to the drawing in detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates the upper and 11 the lower sash of a pair of window sashes, the meeting rails being indicated respectively at 12 and 13.

Secured to the meeting rail 12 is a plate 14 and rising from and secured to this plate as shown at 15 is an elongated member 16. This member is preferably cylindrical in form and is provided with spaced circumferential grooves defining spaced pairs of shoulders 17.

Secured to the meeting rail 13 of the sash 11 is a housing 18 which is open at its opposite side edges. Mounted for pivotal movement within this housing upon the squared portion 19 of the shank of an operating handle 20, is a locking plate 21. This plate 21 is positioned within a housing and is adapted to be projected beyond the edge of the housing. The plate 21 is provided with an arcuate slot 22 which opens at one edge of the plate and which is adapted to receive the reduced portions 23 provided between the shoulders 1'? of the elongated member 16. This is clearly shown in Figures 3 and 5 of the drawing and when the plate is in this position the sash will be locked against relative movement. The plate may be engaged within any of the circumferential grooves to lock the sash either in closed or partly open position.

One edge of the plate is provided with a notch which forms a shoulder 24 and this shoulder is adapted to be engaged by a pivotally mounted dog 25 which is urged into engagement by means of a spring 26. The shoulder 24 is so arranged as to be engaged by the dog 25 when the plate is in locking position and will thus hold the plate against being unlocked. The outer edge of the dog 25 is serrated so as to provide convenient means whereby the dog may be disengaged from the shoulder 24 to move the plate to unlocking position. In this position, the looking plate engages a stud 27 which is receivable within a notch 28 provided in the plate.

If desired, the plate 14a, by means of which 7 the elongated member 16 is attached to the sash, may be provided with an apron 141). This apron extends downwardly along the beveled edge of the meeting rail 12 and is attached to the rail by means of a fastening device 140. This prevents the window from being opened with a jimmy or other like implement.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make 5 such changes as properly fall within the scope of the appended claim.

Having described the invention what is claimed A sash lock comprising an elongated member secured to the meeting rails of one of the sashes, a housing having opposite open side edges secured to the meeting rail of the other sash, a handle having a squared portion extending through the housing adjacent one open end thereof, a plate on the squared portion of the operating handle, said plate being mounted within the housing for pivotal movement and provided with an arcuate slot opening out through one edge of the plate, the plate upon operation of the handle in one direction adapted to be projected beyond and through one of the open edges of the housing to receive a reduced portion of the elongated member, said plate provided in one edge thereof and to one side of the square portion of the han die with spaced notches, a spring actuated dog mounted in the housing adjacent one end wall thereof and flush with one of the open ends of said casing, one of the notches of the plate opening out in one corner portion thereof and the other notch being disposed inwardly of the spring actuated dog, a stop in the housing adjacent the opposite open end thereof, the said spring actuated dog engaging in one of said notches to retain said plate against movement and the said stop engaging the other of said notches for limiting the pivotal movement of the plate upon the release of the locking dog therefrom.

WALTER C. REPASS.

Images