US546649A - Sash-fastener - Google Patents

Description

(No Model A. E. BRAY.

SASH FASTENER. No. 546,649. Patented Sept. 24, 1895.

Wnsss/ g a. Ofw/im DQ a? UNITED STATES ATENT OFFICE.

ANN ELIZA BRAY, OF LOS GATOS, CALIFORNIA.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 546,649, dated September 24, 1895.

Application filed February 21, 1895. Serial No. 539,256. (No model.)

.To all whom it may concern:

Be it known that ANN ELIZA BRAY, a citizen of the United States, residing at Los Gatos, in the county of Santa Clara and State of California, have invented certain new and useful improvements in Window-Sash Locks; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to manufacture and use the same.

This invention relates to improvements in sash-locks of that class in which provision is made for the locking together of the upper and lower sash of weight-balanced Windows.

In the majority of inventions of this class it is necessary that the window be entirely closed before the lock can be applied, and to obviate this necessity is one of the prime objects of my present invention.

Besides acconplishing the above result,l have so designed the interior mechanism of the lock that it may be applied as a springcatch and operated with' the hand, or, in cases where additional security is requisite, may, by the employment of a simple operation, be so changed in the assemblage of its parts as to close with a spring-lock and open only by the employment of a special key.

The parts, in addition to being designed for their structural simplicity and economy, are so arranged as to be readily assembled, not liable to derangement, and positive in their action.

Other minor objects and advantages of the invention will appear in the following specification, and the novel features thereof will be specifically defined by the appended claims.

The invention is clearly illustrated in the ascompanying drawings, Which, with the numerals of reference marked thereon, form a part of this specification, in which- Figure l is a perspective view of a portion of the upper and lower sashes of a window, my lock being represented in a locked position. Fig. 2 is a similar view with the lock in an unlocked position. Fig; 3 is an elevation of the lock with the top plate removed. Fig. 4 is a perspective View of one of the details. Fig. 5 is a central longitudinal section of the lock. Fig. 6 is a perspective view of the locking-jaws. Fig. 7 is a perspective of one of the operating-pins, and Figs. 8 and 9 are views of the two keys employed.

Referring now to the details of the drawings by number, l indicates an 'outer case or housing, the top plate 2 of which terminates in a hinge 3 at one extremity and a fingerguard 4 at the other. This casing lis divided into two compartments by the partition 5, below which are situated the twin jaws 7, (shown in perspective in Fig. 6 and partly in dotted lines in Fig. 3,) which project through the upper wall of the casing l and are pivoted to the casing by means of the pin 8, while the springs 9, which are shown in dotted lines in Fig. 3, are for the purpose of holding the jaws in a normal open position. Resting on the partition 5 and held in close contact therewith by means of the springs 10, which bear against the lower surface of the top plate 2, is the plate 11. (Shown in perspective in Fig.

4.) Projecting upward from and secured to.

the plate 11 is the lng 12, which is formed to engage with the shank of the key 13, (shown in Fig. 8,) which is introduced through the perforation 14 in the top plate 2. The plate 11 is so cut away as to permit of the screws 15 passing from the bottom to the top plate of the casing, thereby securing them together, and at the same time admit of the introduction, through the perforation 16, of the doubleshanked key 17, adapted to engage the inner extremities of the twin jaws 7.

Pivoted to the screws 15 and above the plate 11 are the arms 18, (one of which is shown in perspective in Fig. 7,) to the free extremity of each of which extends upward through the plate 11 the thumb-knob 19 and downward -through the partition 5 the pin 20, which engages with the outer surface of the jaws 7.

Further details of construction will be set forth in explaining the operation of the invention.

The hinge 3 is screwed to the lower sash in such a manner as to permit the ready engagement of the jaws 7 with a slotted mortised plate 21 on the side rail of the upper sash 22. It is manifest that, the interior parts of the lock being positioned as shown in Fig. 3, the forcing together of the jaws 7 may be accomplished by forcing the thumbknobs 19 in a like direction and the .lock

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thereby opened and permitted to assume tle position shown in Fig. 2. The operation of locking is accomplished by simply pressing the beveled edges of the jaws 7 against the edges of the engaging-slot 23 of the plate 22, when they yield and enter into a locked position.

Then it is desired to add further security to the lock, the key 13 is brought into engagement with the lug 12 and turned, thereby forcing the plate ll into the position shown by the dotted lines marked with a dotted A. It is manifest that the plate 11 being in this position the edges 24 and 25 prevent the pins 20 and knobs 19 operating the jaws, and the only possible way of opening the lock is by the engagement of the double-shanked key 17 with the rear or inner legs of the twin jaws 7. The slot 26 in the plate 11 is for the purpose of preventing the hinderance of the pin 8 to the sliding of the plate, and the springs 9 are to prevent the accidental sliding of the plate 11.

It is my intention to provide several engaging-plates 21 at various heights on the side rail of the upper sash, and by so doing make itpossible to lock the sash in partlyopen or ventilating positions. I have constructed these plates circular for the purpose of lessening the labor of mortising, it being done with a bit.

From the above description it .is evident that the function of the key 13 is merely to convert the lock from a hand to a key opening one7 or vice versa, while that of 17 is to open the lock when the parts are in the relative positions shown in Fig. 3.

In construeting the above lock I lave designed the various parts with a View to simplicity, durability, and economy; but I am aware that changes in the form and proportion of parts of the devices herein shown as an embodiment of my invention can be made Without departing from the spirit or sacrificing any of its advantages, and I therefore reserve the right to make such changes and alterations as fairly fall within the scope of my invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In asash lock the combination of the casing l hinged to the lower sash and twin spring actuated jaws 7 bent at right angles at their outer ends and pivoted to said casing, knobs 19 engaging with said jaws and sliding key-operated plate 11 adapted to engage and prevent the movement of said knobs sub stantially as set forth.

2. In a sash lock the combination of acasing 1 hinged to the lower sash and spring actuated twin jaws 7 bent at right angles at their outer ends and pivoted to said casing and adapted to be operated by the knobs 19, and sliding key operated plate 11 capable of movement into engagement with said knobs, and a secondary key 17 for the purpose of operating said locking jaws substantially for the purpose speeified.

In testimony whereof I set my hand in presence of two witnesses.

ANN ELIZA BRAY.

IVitnesses:

ARTHUR F. MAYo, SAMUEL SYERRKEN.

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