US559587A - Sash-lock - Google Patents

Description

2 Sheets-Sheet 2.

(No Modl.)

I'. W. LEWIS. SASH LOCK.

No. 559,587. Y Patented May 5, 1896.

ANDRDN HLRAHM. PHOTOUTHQWASRINGTUN, D C 4 PATENT EErcE.

ISAAC VRIGIIT LEVIS, OF PORTLAND, OREGON.

SASH-LOC K.

SPECIFICATION formingpart of Letters Patent No. 559,587, dated May 5, 1896.

Application flied runway 28.1895. serial No. 540,029. iN@ model.)

T o all whom, t may con/cern.-

Be it known that I, Isaac WRIGHT Lewis, a citizen of the United States, and a resident of Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Sash-Locks and l do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, refcrence being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this speciiication.

My invention relates to an improvement in sash-fasteners, the obj ect being to provide simple and eiiicient means for locking the ineetingrails of sashes.

A further object is to so construct and arrange the parts that an unlocking of the fastener cannot be effected bythe introduction of a knife or other tool between the meetingrails of the sash.

iVith these objects in view my invention consists in certain novel features of construction and combinations of parts, as will be here inafter more fully described, and pointed out in the claims.

In the accompanying drawings, Figure l is a view in section of my invention applied in its operative position. Fig. 2 is a plan view of same, the meeting-rails being broken away. Fig. 3 is a plan view of a modified construetion. Fig. e is a perspective view of the bolt. Fig. 5 is a plan view of plate E, and Fig. G is a view in transverse section of same.

A represents the lower rail of the upper sash, and B the upper rail of the lower sash. Secured to the upper face of the rail A is a plate C, to the inner edge portion of which is hinged a iia-p D, which is arranged when turned down to rest upon the upper face of a plate E, secured upon the rail B. The outer edge of the plate E, or the edge adjacent to the plate C, has thereon an upturned ledge or flan ge e, the outer edge of which is inclined slightly, as shown, while its upper face is curved, as at c. To receive this ledge or iiange the flap D is arched upwardly from the hinge, forming in its under face a seat j', which neatly iits said ledge or iiange. The outer edge of the ledge or flange when the lock is fastened abuts against the hinge and the inner face against a slightly-inclined shoulder f of the flap.

The plate E has cut therein an oblong slot F with rounded ends and is provided on its side and inner edge with a depending flange g, which latter rests on the rail B, and hence raises the body of face ot" the pla-te E above the rail, thus forming a recess between plate E and the rail for the reception of the oblong head h of the bolt H.

H designates the bolt, which latter is loosely mounted in the flap D through the intervention of the screw j and the concave washer J. This bolt consists of an oblong head 7L, two disks of unequal sizes above the head, and an angular section above the upper disk, all of said parts being integral and provided centrally with a female threaded hole for the passage of the screw j. This bolt is passed upwardly through the iiap E from the under side thereof until the upper face of the large disk bears against the under face thereof. When in this position, the smaller disk rests within the opening,while the angular section is above the flap. The lever I, which is provided with an angular opening corresponding in size and shape with the angular section of the bolt, is then placed on the angular section of the bolt, after which the curved washer is placed in position on the lever with the opening therein in alinement with the opening in the bolt. The parts. thus assembled are locked by thc screw j, which is passed through the washer into the female screw-threaded hole in the bolt. The washer being of thin metal is coinpressed by the screw and gives the requisite friction on the face of the flap D. Flap D is provided with lateral shoulders j j', which form stops for the lever at its opposite limits of movement, and when the lever is in contact with either stop the bolt 7L rests lengthwise the opening, thus leaving the flap free to be turned upwardly.

Then the lock is not in use, the flap D, with the lever, is turned up and outward into substantially vertical position, the hinge ed ge of the iiap contacting with the plate C to limit such movement, the friction of the hinge being sufficient to prevent the flap from falling by a jar.

In locking, the iiap and lever are brought down onto the plate E, the scat f hooking over the curved surface of the ledge or flange yc, forcing the meeting sash-rails to a level and at the same time drawing them tightly together. The leveris then turned to the right or left, thus bringing the flanged head of the bolt transversely of the slot and lock.- ing the sashes together very rigidly and securely. It will be seen from the foregoing that the ledge or flange e acts as a fulcruin for the shoulder f of the flap to work upon to draw the rails together.

If, in running up the upper sash previous to locking, the meeting-rails fail to come into alinement, the lever affords means whereby the said upper sash may be forcibly pulled to its seat. It will also be seen that, should the two sections C and E be somewhat out of alinement, the lock will operate all right, provided the bolt can enter the oblong slot F.

The manner in which the iiap D closes overk the joint between the sashes and the neat manner'in which it lits over the ledge or flange e renders it impossible to reach the lever by means of a knife or other tool inserted from the outside between the sashes.

Insteadk of forming the lever as above described and as shown in Figs. l. and 2, such.

lever may consist of a flat thumb-piece I) on the top, as shown in Fig. 3. lVhile this thumbpiece may be rigid with its base, which iits the squared shank of the nut, I prefer that it shall be hinged or pivoted thereto, as shown, in order that it may fall or lie flat when not in use.

The parts composing the lock may be stamped from sheet metal or they may be cast. The exterior shape of the lock may be to be secured respectively to the two meetf ing-rails of window-sashes, one of these plates having an elongated transversely-disposed` slot, of a flap hinged to one plate, a bolt having an elongated head thereon of less length than the lengthof the slot whereby to admit of the entrance of the head even when the bolt is a little to one side of the longitudinal center of theslot, substantially as set forth.

2. The herein-described sash-lock; consisting of a plate, carrying a pivoted flap', a lock-r ing-bolt carried by said ap, a handle for actuating the locking-bolt and a second plate having an oblong slot foi-fthe passage of the bolt, and a marginal flan ge, the latter adapted to rest on the upper face of the sash-rail, substantially as set forth. f

In testimony whereof I affix. inysignaturc in presence of two witnesses.

ISAAC XVRIGHT LEWIS.

lVitnesses:

S. C. CATcHiNG, GEO. W. MoGARvER.

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