US1147175A - Window-sash lock. - Google Patents

Description

E. J. KEATING.

WINDOW SASH LOCK. APPLICATION FILED MAY11.1915.

Patented luly 20, 1915.

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COLUMBIA PLANDGRAPH C0.,WASHKNDTON, D. C'

EDWARD J. KEA'IIING, or BRIDGEIORT, CONNECTIGUT- WINDOW-SASH LOCK.

To all whom it may concern;

Be it known that I, EDWARD J. KEATING, citizen of the United States, residing at Bridgeport, in'the county of Fairfield and,

State of Connecticut, have invented certain new and useful Improvements in Window- Sash. Locks; and I do herebydeclare 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.

My invention relates to windo'w sash locks, and it consists in certain details of construction set forth in the following specification.

Referring to the drawings wherein. Figure 1 represents a sectional view of the two meeting rails-and a part of the locking device on line 1 upper plan view of the locking device and a broken view of the meeting rails; Fig. 3

v is a broken sectional view of the inside meeting rail and a sectional view of the locking device on line 33. of Fig. 1, also broken view of the locking bolt; Fig. 4 is a broken side elevation of the inside meeting rail and locking bolt in open position; Fig. 5 is an enlarged broken view partly in section of the locking device connected with the inside meeting rail; Fig. 6 is an enlarged detail end elevation of the table part of the tilting frame of the locking device; Fig. 7 is an enlarged broken detail view of the support for the table; Fig. 8 is an enlarged view partly in section of locking device connected with the inside meeting rail in locked position, broken view of the lockingbolt, broken sectional view of part of the box in which the locking device is located, and broken view of the tilting frame retaining spring; Fig. 9 is an enlarged detail view of the key; and Fig. 10 is an enlarged broken sectional view of the housing and box connected with the inside meeting rail.

The outer meeting rail 1 carries the overhanging looking bolt 2 and'housing 3. This housing has the extension 4 resting on the surface of the rail, and the right angle bend 5 which lies against the inside face of the rail and is secured thereagainst by the screws 6. The housing 3 has the opening 7 to form an upper bearing for the locking bolt, while its lower end 8 has a bearing in the hole 9 of the rail. 10 is a spring underlying said bolt adapted to exert an upward pressure thereagainst.

11 is an enlarged portion of the bolt whose Specification of Letters Patent. Pa,ten1je 1 July 26 1915 Application filed May 11, 1915. Serial No. 27,299. e

1 of Fig. 2; Fig. 2 is an' diameter is greater than the diameter of the hole 7 of the housing, to form a check-for the upward'travel is unlocked.

The inside meeting rail;,12 carries the.

metal box 13 in which the-locking mechanism, presently to be described, is located. The housing 14 has the square opening 15 adapted to receive the square end 16 of'the of the bolt when the same.

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looking bolt. This housing 14 has the extension 17 resting on the upper surface of the rail, with the right angle bend 18 lying against the outer face of the rail and is held thereagainst by, the retaining, screws 19. The inner portion of the housing 14 is locked to the box 13'asshown more clearly in Fig.

10, wherein the inwardly bent portion 20 of 22 is a frame-see also Fig. 8.whose upper bar 23 is adapted to be engaged by the catch portion 24 ofthe locking bolt. This frame is secured to the rod 25, and this rod is journaled in the sides of the box 13, shown at Fig. 1.

'26 is a tableor support carried by the frame 22 whose innerend engages the platform 27 to limit the inward movement of the tilting frame 22 under the impulse of the spring 28. This platform 27 has the side extensions 29 which are secured to the sides of the box 13. r 30 and 31 are two safety locking levers journaledsee' also Fig. 5-on the rod 32 secured to the sides of the tilting frame 22.

' The horizontal portion of theselevers rest in the grooves 33-Fig. 6.of the support 26 to keep them separated. The curved portions 30* and 31 of the levers overhang the top bar 23 of the tilting frameFig. 5'. when the locking bolt is withdrawn from the housing of the inside meeting rail, as

shown in Fig. 5. The opposite end of these levers is provided with a retaining hook portion, one, 34, being shown in Figs. 3 and 8, which hook portion is adapted to engage the lip 35 for the purpose presently to be explained.

The operation of the device is as follows} The locking bolt is swung around until its squared catch end 16 is directly over the opening in the housing lei, when a downward pressure against the spring 10 will enter the free end of the bolt in said housing. In its descent it will first encounter the overhanging curved ends 30 and 81* of the levers 3031 and tilt said levers to disengage their hook portions 34 from the lip 35, and hold them thus disengaged until the bolt has also tilted the frame 22 so that its catch 2% can pass under the bar 23, when the opposite curved ends will enter the opening 36 Figs. 3 and 8and thus permit the opposite hook ends to reengage the lip 85. The meeting rails are thus securely locked together and in such a manner that it is impossible to tamper with the lock from the outside and withdraw the bolt. The importance of the safety levers is that the bolt cannot be withdrawn until these levers are released.

To unlock the bolt from the inside, the key 37 is used having the bits 38, one adapted to engage each of the levers as follows: The

key is inserted in the key hole 39-Fig. 4:

until its forward end rests in the hole 4CO Fig. 3-located in the opposite side of the box 13. These key bits will pass through the openings 41Fig. 7 in the platform 27 and engage the underside of the levers 3031 at about the point shown in Fig. 8. Turn ing the key toward the left will disengage the levers from the lip 35 and hold them out of engagement therewith until after the bits have engaged the end a; of the table 26 and tilted the locking frame 22 to disengage said frame from contact with the locking bolt when said bolt is carried out of the housing 14 by the force of the spring 10, and the levers are reengaged to the lip 85 by the springs e2. It is quite evident that the number of levers and bits may be increased if desired.

Having thus described my invention, what I claim is l. A window sash lock comprising an overhanging looking bolt pivotally supported in one of the meeting rails and adapted to have a horizontal movement, a spring to exert an upward pressure on the bolt, a housing embracing a portion of the bolt to serve as a bearing therefor and also to limit its upward movement, the free end of the bolt having a catch, a housing on the other meeting rail having an opening to receive the free end of the bolt when depressed, a spring actuated tilting frame with which the catch of said bolt is adapted to engage,pivotally supported safety locking levers carried by the frame, and means for locking said levers to prevent tilting of the frame away from its engagement with the locking bolt.

2. A window sash lock comprising an overhanging locking bolt pivotally supported in one of the meeting rails and adapted to have a horizontal movement, said bolt having a catch at its free end, a spring toexert an apward pressure on the bolt, a housing embracing a portion of the bolt to serve both as a bearing for the bolt and also to limit its upward movement, a housing on the other meeting rail having an opening to receive the free end of the bolt, means for locking the bolt, said housings having extensions projecting against the meeting faces of the rails and secured thereto.

3. Awindow sash lock comprising an overhanging locking'bolt pivotally supported in one meeting rail to have a horizontal movement, a spring to exert an upward tension on the bolt, means for limiting its upward movement, the free end of the lever having a catch, and a box inserted in the other meeting rail carrying locking means adapted to be engaged by the free end of thebolt.

4. The combination with the meeting rails of a window of an overhanging locking bolt adapted to have both a horizontal and vertical movement carried by one of said rails, locking mechanism located in the other rail comprising a spring actuated tilting member, a support therefor to limit the action of the spring, spring actuated and pivotally supported safety locking levers carried by said tilting member, a housing having an opening, a portion of the locking members projecting within said opening, the free end of the locking bolt having locking means, said bolt adapted to be depressed to enter its free end within said opening to first contact with the locking levers and temporarily release the same and then actuate the tilting member and engage therewith.

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

EDWARD J. KEATING.

Witnesses:

KINGsLnY B. HILL, GEORGE W. VIEBROOK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Estate, Washington, D. C.

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