US1152728A - Sash-lock. - Google Patents

Description

C. P. HATHAWAY.

SASH LOCK.

.APPLICATIONIYFILED MAY 13, 1913.

Patented Sept. 7 1915.

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SASH LOCK.

APPLICATION FILED MAY13. I913.

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PatentedS 7 1915.

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Specification of Letters Patent.

Patented Sept. 7, 1915.

' Application filed May 13, 1913. Serial No. 767,345.

T 0 aZZ whom it may concern 1 Be it known that I, CLAUDE P. HATHAWAY, a citizen of the United States, residing at Cofleyville, inthe county of Montgomery and State of Kansas, have invented certain new and useful Improvements in Sash- Locks; and I do hereby 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.

This invention relates to new and useful improvements in window sash locks, and as its principal object contemplates the provision of a sash lock which will permit the window sashes to be raised or lowered to any desired position, and willhold them in adjusted position.

A, further object is to construct the sash lock in such manner that while the lock may be readily controlled from the interior of the house or building, it will be impossible for any person on the exterior to tamper with the lock in an endeavor to raise the sashes for entrance.

The above and additional objects are accomplished by such means as are illustrated in the accompanying drawings, described in the following specification and then more particularly pointed out in the claim which is appended hereto and forms a part of this application.

lVith reference to the drawings, wherein I have illustrated the preferred embodiment of my invention as it is reduced to practice,

and throughout the several views of which similar reference numerals designate corresponding parts: Figure l is a front elevation illustrating a portion of the window sashes with the sash lock of this invention in assembled position. Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3 is a section on the line 3-8 of Fig. 2. Fig. 4 is a detail view of the perforated locking plate carried on the window sashes. Fig. 5 is a section on the line 5-5 of Fig. 1. Fig. 6 is a section on the line 66 of Fig. 1. Fig. 7 is a section on the line 77 of Fig. 6.

Proceeding now to the description of the drawings, the numerals 1 and 2 designate respectively the upper and lower window sashes, while the numeral 3 designates the sash wall of the window casing, designated as an entirety in Fig. 2 by the numeral 4. The member 3 of each side of the window casing is cut away immediately above and below the center line of the window to receive the upper and lower sash locks of this lnvention. The sash locks provided for the upper and lower window sashes are practically identical in structure, differing only in this respect, that the lock for the upper sash is slightly longer than the lock for the lower sash, as illustrated in Fig. 3. The purpose of this difference in dimensions will be obvious by reference to Fig. 3, and inasmuch as the structures are practically identical only the lower sash lock will be described in detail. This sash lock, designated as an entirety in Fig. 8 by the numeral 5, includes an elongated substantially rectangular housing 6. The longitudinal wall 7 of the housing is immovable and may be held in fixed position by screws or other suitable fastening devices 8, adapted to be screw threaded in the tubes 9. Internally of the housing 6 and at the opposite ends thereof are ar-- ranged plunger tubes 10 and 11, respectively disposed at the inner and outer ends of the housing. Then the housing 6 is in operative position in the member 3, the tube 10 extends laterally with respect to the vertical frame member 2 of the window sash, and is approximately alined with the center line thereof, being disposed so as to permit a locking pin 12, slidably mounted in the tube 10, to be inserted through the perforations 13 of a locking plate 14:, which is secured to theadjacent longitudinal edge of the sash3.

Asa means for normally holding the pin 12 in locking engagement with the plate 14: and for controlling the withdrawal of the pin to permit the window sash to be raised and lowered, this invention employs a pair of pivotally mounted lever arms 15 and 16 and a leaf spring 17. The leaf spring 17 is secured at one terminal to a side wall of the housing 6 by bolts or screws, as at 18, and is arcua-te in shape, being of such length that it extends approximately the entire length of the housing. The lever 15 is centrally pivoted on a pivot pin 19, journaled in the opposite side walls of the housing, and is disposed to permit the reduced terminal to operate through a slot formed in the tube 11 and to extend into a lateral bore 21 formed in a push pin 22. The lever 16 is pivoted on a pin 23 journaled in the opposite side walls of the housing and is arranged with its inner terminal 24 in engagement the window sashes.

otal point 23 and the free end 26 of the lever, thus normally holding the locking pin 12 in extended position with its terminal in engagement with the perforation 13 of the plate 14, as illustrated in Fig. 2. By reference to Fig. 2, it will be observed that the member 3 is provided with a recess 28 alined with the tube 10 to permit the pin 15 to be fully withdrawn from engagement with the plate 14:.

The actual construction of the lock being thus disclosed, it now remains to describe the operation of the several parts during the manipulation of the lock to raise and lower It will be observed that by pushing the pin 22 inwardly, the lever 15 will swing on its pivot 15, bringing the terminal 25 nearer the walls 7 of the housing 6, and consequently swinging the lever 16 on its pivot 23, forcing the free end 26 away from the wall 7 of the housing 6, against the tension of the spring 17. The pin 12 is thus withdrawn from engagement with the notches of the plate 14, and the window may be raised or lowered in the desired adjusted position. As soon as the pin 22 is released, the spring 17 will force the terminal 26 of the lever 16 toward the walls 7 of the housing 6, thus returning the pin 12 to a position of locking engagement with the plate 14.

In reduction to practice, I have found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is the most efficient and practical; yet realizing that the conditions concurrent with the said locking pin, a leaf spring rigidly secured at one of its ends to the wall of said housing, its free end extending toward the opposite end of said housing and being curved downwardly, a lever pivoted at its intermediate portion in said housing adjacent the locking pin, one end of said lever engaging the locking pin, its free end inclining upwardly, a second lever pivoted at its intermediate portion at the opposite end of said housing, one of its ends extending downwardly and engaging the inner end of a slidable push pin, said pin mounted in said housing, the free end of said second lever extending upwardly and its end engaging the spring, the upwardly extending end of the first mentioned lever engaging the second mentioned lever adjacent its end, said spring engaging the first mentioned lever between its pivotal point and its end providing means for holding said locking pin in an operative or inoperative position.

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

CLAUDE P. HATI-IAWAY.

Witnesses:

EMBREE W. MORGAN, J. Gr. ROBINSON.

Copies of this patentmay be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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