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Publication numberUS705282 A
Publication typeGrant
Publication dateJul 22, 1902
Filing dateJan 11, 1902
Priority dateJan 11, 1902
Publication numberUS 705282 A, US 705282A, US-A-705282, US705282 A, US705282A
InventorsWilliam H Nelson
Original AssigneeWilliam H Nelson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 705282 A
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Description  (OCR text may contain errors)

' w. H. NELsoN.-


(Application filed Jan. 11, 1902.)

No. 705,282. Patented my 22, |902.

v(No Model.)

I o1 .Yi



SPECIFIGATION'forming part of Letters Ill-"atentV No.` 705,282, datedJuly 22, 1902.

Application led January 1l, 1902. Serial No.89.281. (No model.)

To @ZZ whom t may aon/cern,.-

Be it known that I, WILLIAM H. NELSON, a citizen of the United States, residing at Hazleton, in the county of Buchanan and State of Iowa, have invented certain new and useful Improvements in Sash-Fasteners, of which the following is a speciiication.

My invention relates to sash-locks, and more particularly to that class of locks or fasteners which are designed to secure sliding windoW-sashes in any desired position, either open or closed; and the objects of my invention are to provide a lock for fastening sliding window-sashes in any position in which they may be placed, whether open or closed, to provide a lock hidden from the outside and a special form of key. for operating the same. Iattain these objects by the mechanisms illustrated in the accompanying drawings, in which Y Figure 1 is a horizontal section of portions of upper and lower window-sashes and part of their inclosing casing containing my iinproved sash-lock, showing both sashes locked by the bolts thereof. portion of a window-casing and the recessed upper and lower sashes and a side elevation of the lock with coveringplate removed,

the parts of the lock in the position which they assume when the sashes are locked thereby. Fig. 3 is a side elevation of the lock-case, the sliding guide being removed. Fig. 4: is a side elevation of the lock-case with all movable parts removed, and Fig. 5 is a View showing the manner of fastening the key and of holding one of the bolts out of engagement with a sash.

Similar letters refer to similar parts throughont the several views.

c represents a window-casing in which work the upper and lower sashes a and b, respectively. The window-casing is countersunk to permit of theintroduction o f the lock-casing d. An opening is also provided in the casing for the introductionvof the key. Recesses u and t are sunk into the corner edges of the upper and lower sashes in proper positions to permit of their engagement with the bolts of the lock. The lock is contained within a rectangular 'casing d, which has openings and d2 provided so that the bolts g and h may work therein and which has a Fig. 2 is a view of al guide-piece o running longitudinally of it to hold in position the bolt-guides g and h, respectively. This casing also has a recess at one end to permit of the introduction, of the key s. The bolt-guides g and h work, respectively, along the upper and under sides of the guide-piece o and are of exactly similar construction, but reversed in position with respect to each other. One end of each is provided with a stud to engage ashoulder on the guide-piece o and also with a stud to engage springs m and n, respectively. The springs m and n ordinarily keep the boltguides c/ and h in a position whereby the bolts g and h/ arein engagement with the sides of the recesses u and t, respectively, locking both window-sashes. The bolt-guide ghas a projection g2'and the bolt-guide h has a projection h2 for the purpose ofengaging the recessed sides of the slide-piece f. The slidepiece f is provided with a transverse piece f which is slotted for the introduction of the spindle lc of the key s. Eachvof the long sides ofthe slide-piece f isV recessed, that the pro- -jections'gand h2 of the bolt-guides g and h,

Y This slide- Y .piece fis also provided with a longitudinal respectively, may work therein.

slot to accommodate the screw fastening the cover e. The cover e has a transverse piece e', which holds the slide f in position. A key s hasstuds or wards 7c and k2 placed on opposite sides of its shaft k,near the end thereof: Itsshaft or spindle k. is threaded in order to workwithin the interior threaded barrel p of thel key, so vthat the length of the spindle may be adjusted to` different thicknesses of casing-moldings. The barrel p is also slotted at r andy fr', said slots being provided for the purpose of providing a means of engagement with the inner edges of the key-plate fw.

The manner of operating the sash-lock is as follows: The parts of the lock being in the position shown in Fig. 1, both sashes being locked, if it is desired to lower the upper sash a and fix it at any desired height the. key s is introduced into the lock by pushing the end of its shaft k through the slot in the transverse piece f and turning it about one-quarter around until the ward 7c engages the inner side of said transverse piece. The key is then pulled out to a position indicated by the dotted lines in Fig. 5, the slide-piece f engag- IOO ing the projection g2 and drawing the bolt g' out of the recess u, freeing the window-sash a. The bolt g is prevented from being retracted into the recess u by the action of the spring m, if the slot 7' in the barrel p of the key s is brought into engagement with the inner edge of the key-plate w. When the sash a has been lowered to the extent desired, the key s is released from the edge of the keyplate w,when the retractile force of the spring m draws the bolt g into engagement with the sides of the nearest recess u, locking the sash. The lower sash b may be raised and locked in a similar manner, except that the bolt h is released from engagement with the sash by pushing in the key s and letting the slot r 'in its barrel 19 engage the inner edge of the keyplate w. When the keys is so pushed inward, its ward k2 engages the transverse plate f', causing the slide-piece f to engage the projection h2, sliding the bolt h. When the key s has been removed from the lock, the retractile force of the springs m and n keeps the bolts g and lL locked into the recesses u and t, respectively. The lock is then invisible from the outside and can only be operated by means 0E a key similar to that described.

Having described my invention, what l claim as new, and desire to secure by Letters Patent, is-

l. A sash-fastener, consisting of the combination of window-sashes having a plurality of recesses on the inner corners of their vertical edges nearest the lock, with a lock having bolts arranged to engage the sides of said recesses, a recessed slide-piece adapted to actuate said bolts, springs to hold said bolts in engagement with said recesses in the sashes, a key having a slotted barrel and adjustable spindle, and a key-plate, substantially as shown and described.

2. A sash-fastener, consisting of the combination of a lock-casing, bolts movable in and through said casing, tension-springs for keeping said bolts in one position, a movable slidepiece for actuating said bolts, with a key having a slotted barrel and adjustable spindle having studs nearits end on its opposite sides, and a key-plate, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6076867 *Sep 28, 1998Jun 20, 2000Dollman Technical Services, Inc.Safety latch
US7708355 *Nov 18, 2004May 4, 2010American Power Conversion CorporationDouble door release
US7954912Apr 29, 2010Jun 7, 2011American Power Conversion CorporationDouble door release
Cooperative ClassificationE05B37/20, A45C13/06