US1081538A - Sash-lock. - Google Patents

Description

J. LARSEN.

SASH LOCK.

APPLIUATION FILED 00122, 1912.

1,081,538, Patented Dec. 16, 1913.

v mm 'NTTF STATES PATENT @FFTQE JACOB LARSEN, OF CHICAGO, ILLINOIS.

SASH-LOCK.

To all whom t may concern.'

Be it known that I, JACOB LARsnN, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sash-Locks; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. y

This invention relates to sash locks adapted to lock the upper and lower sashes of a window in opened or closed position as desired.

Tt relates particularly to that form of sash locks having a pivoted arm member adapted to be secured to one of the sashes and a catch or lock adapted to be secured to the other sash, and provided with a locking member' for .engaging the desired pivoted arm and locking the latter and the sash on which it is mounted in any desired one of a plurality of positions with respect to the sash upon which the catch or locking mechanism proper is mounted.

The principal object of the invention is to provide a simple, economical and eiiicient sash lock.

A further object of the invention is to provide a sash lock comprising` a pivoted arm member adapted to be connected with one of the sashes of a window and to swing in a vertical plane to and from upright position, and locking mechanism adapted to be secured to the other sash and having a pivoted catch or locking hook member adapted to swing in a horizontal plane into and out of engagement with said vertically movable, pivoted member of the other sash, and means for securely locking such catch or locking member in locking engagement with the pivoted arm member.

Other and further objects of the invention will appear from the following description and claims and from an examination of the accompanying drawings.

rThe invention consists in the features, combinations and details of construction herein described and claimed.

In the accompanying drawings, Figure 1 is a view in side elevation of a sash lock constructed in accordance with ymy improvements, showing the same in position to hold the upper and lower sashes locked in closed Specication of Letters Patent.

Application filed October 2, 1912.

Patented Dec. i6, 1913.

Serial No. 723,529.

position, as it would appear when seen from the outside of the window; Fig. 2, a transverse sectionA taken on line 2 of Fig. l looking in the direction of the arrow and showing the parts in the position which they occupy in Fig. l; Fig. 3, a view in elevation of the parts shown in Figs. l and 2 with the relatively long arm of the pivoted arm member in upright position and the locking mechanism on the lower sash in locking engagement with said arm, said parts being positioned to hold the sashes locked in opened position; Fig. et, a view in vertical section taken on line 4t of Fig. 3 looking in the direction of the arrow; Fig. 5, a plan view of the parts shown in Figs. l to 4: inclusive, showing the same in the position illustrated in Fig. l; Fig. 6, a plan view of the parts shown in Figs. l to 5 inclusive,

showing the notched pivoted arm members in the position illustrated in Fig. l, and the locking mechanism of the other sash in releasing position; F ig. 7, a similar plan view showing the horizontally movable pivoted locking hook or locking member in position to be moved longitudinally with respect to the pivot on which it is mounted into engagement with a vertically movable locking arm of the other sash-locking member; Fig. 8, an enlarged detail view in vertical section of the locking mechanism of the lower sash, taken on line S of Fig. 5 looking in the direction of the arrow; and Fig. 9, an enlarged detail view of the operating lever and the catch or boss for holding the same in operative position.

In constructing a sash lock in accordance with my invention and improvements, I provide a pivoted arm member comprising a relatively long arm a and a relatively short arm o adapted to extend at an angle with respect to each other. These arms are, by preference, connected in rigid relation to each otherl or formed in one integral piece and pivotally supported upon one of the sashes, preferably the upper sash c of a window, by means of a suitable supporting bracket d provided with a horizontally extending pivot pin c upon which said arm member is pivotally supported and adapted to swing in a vertical plane so as to enable either the relatively short or the relatively long arm to be swung into upright position, as desired. Each of the arms is provided with one or more notches f preferably in the edge adjacent to or toward the window panewg. This pizvoted arm member is located on the inside of the. window pane and preferably .secured to `the lower cross piece of the upper sash.

In order to provide means for securely locking the pivoted arm member, and thereby the sash upon which it is mounted, in ,any

desired vone of a plurality of ositio-ns with relation to the other sash -o' :the window,

suitable locking mechanism is provided and mounted preferably :upon the upper :cross piece .h f.of the lower :sa-sh7 .comprises -a base plate 'seoured =to the Isash by imeans of screws jor anyfdfesiredsecuringimeans. 'The main body :portion Je 'of-the b-ase fplate :is provided with vafsuitable top bearing surface yZ having a. segmental slot m fthe-rein, a por-tion of which :slot is -in the form of a. segment 1011" are of a circle, the cen-ter of 'which coincides with the axial center ofthe pivoted 'locking member y.or hook n which is pivotally sup,

ported :upon the `base 'apl'ate by .means .of -a vert-ical headed piyot pin yor screw 0 mounted in the center fof the base plateand projecting upward therefrom 'fand extending through a'nelongated -s'lot p 1in the hook or, locking Amember n. The fslotp is elongated longitudinally ofthe locking hook member n andthe latter isthus :adapted lto swing in aI horizontal :plane onthe ypivot 0 and to slide l en-dw'ise into and out of vlocking engagementwith whichever one of Vthearms a or l) is in;v

upright :position adjacent thereto. rThe slot oftsaid locking member (see Figs. 5 and 8).

The l.locking member n is provided with a41 simil/ar segmental slot s, shown in Figs. '5

and 8, the main portion lof which slot is in l the form'of an Yarc of a circle the center of which coincides with the pivot pin o, and' thisslot is provided atene-end with an in- 2 wardly .curved end portion t which extends* nearer to the axial center of the pivot pin 0 i than does themain'po-rtion of lsaid slot, and an operating and locking 'lever u, having a suitable vperforation therein through 'which the pivot pin 0 extends, is 'pivotally mounted on said pivot pin 0 in position to extend over the locking hook or member n, and is provided with a dependingpin o which -exl tends downward into the slot s in said loclring member a, as shown in Figs. t5 and 8. A washer lw is mounted upon-the pivotpin o in position to hold the locking lever u and thereby the other pivoted locking-member n, in operative position upon the base plate t', so asto permit the operating lever u to rotate freely uponitsaxis formedby said -pivot pin, yand also permit the rotation of the locking member .or hook n and its longitudinal movement into and out of locking position. The

Abase :plate z' should be mounted in such posi- Ation upon the cross piece of the window sash .that one edge y is iush with the edge of the window sash and in position to be engaged by lwhichever one ofthe arms a or b is raised into position to extend upward adjacent to said base plate. An upwardly projecting boss alon the base plate z' is provided with an inclined shoulder `or catch 2, as indicated in Fig. "9, adapt-ed -to engage and securely hold the operating lever 'u in locking position, when ksaid ylever is moved *to locking posiv tion, and into engagement with said liboss.

The pivoted "member, comprising kthe notch-ed ror vshouldered arms a. Vand 7), is, "by preference, `so constructed that when the ar-m a is raised to upright position the arm b will form a stop and brace adapted to stop the arm a when-it reaches `the properupright position 4toena'ble it y"to be .properly engaged and securely loc'lred in upright position by :the locking hook n, and the arm a is off-such construction-as to stop thearm Z) in proper upright position `to ybe `engaged and securely looked by the hook n, when the .arm b is fraised. Thearm "b is v'thusadapted to Vbe enigaged by the Vlocking hook '1t when the win- .dow sashesare to be locked in `closed positionfandi-the :arm a is vadapted to enable the :sashes to be 'locked "in any desired one .o'f a lplurality of opened positions :according to the position Vof the notch 7' engaged 'by the hook member n.

By the .above construction and arrange- `;ment Vof elements 'it will `be seen that the swinging of the locking lever u .upon its pivot in a horizontal l.plane -in the posi-tion shown 1in Figuwill cause the 'pin e on said llever to 'engage the flocking member a and swing the latter 'to releasing position, as .shown in F ig. "6, and that the .movement of 'the lever u 'from -the'position shown in Fig. 6, to the position kshown in `ZF ig. 7, will ro- :tate the locking'hook member m, to .the posi- :tion shown in Fig. 7, from which position zsaid lookin hook member is adapted to `be :moved longitudinally and securely locked `in locking engagement 'with theadjacent arm a lor b'offthepivoted an'ember on the adjacent sash. In order to enable the 'locking memlber or hook 'a to :be thus moved longitudinallyto its yfinal Ilockingposition, in which position the hoch Lportion 3 will extend into the adjacent slot-orjgroove j", as shown in lFig. 5, it is Aonly necessary to swing Vthe operating and lofcking'lever u from Ithe position shown in Fig. 7 tothe position shownin Fig.fthuscausing'the'pin e onthe lever fu to engageth'e inwardly curved' end portion t of thesl'ot fs, which `curved slot portion forms a'cam on th'elocking'hook'membern,

thus moving the latter endwise from position shown in Fig. 7 to position shown in Fig. 5 and into locking engagement with the adjacent arm a or b. This endwise movement of the hook or locking member n also causes the depending pin o on the latter to move into the inwardly curved slot or cam portion Q of the base plate to the position indicated in Figs. 5 and 8. This movement of the locking leverl u to the position shown in Fig. 5 causes the lever u to be engaged and securely held in position to securely lock the locking member or hook a in locking engagement with the adjacent arm a or b (see Figs. 5 and 9). When the relatively long pivoted arm a is in lowered position with the arm b in upright position, and the arm b is locked in engagement with the base plate y by means of the hook or locking member n, as shown in Figs. l and 5, the window sashes will be locked in closed position and the relatively long arm will be in such position that it will not disfigure the window or detract from the appearance of the sash lock, and the relatively long arm is thus not required to extend upwardly eX- cept when the sashes are to be locked in opened position. The longitudinal movement of the locking member or hook n enables the adjacent arm a or to be firmly drawn into engagement with the adjacent edge y of the base plate z' and securely held in such position in such a manner as to prevent all rattling of the sashes with respect to each other, and securely lock the sashes in any position in which they are adjusted.

I claim:

l. In a. sash lock, the combination of two rigidly joined arm members arranged at right angles to each other, and one of which is longer than the other, said arm members being provided with a plurality of notches, means for pivotally connecting said arm members to a sash at their joined ends,

adapted to permit either arm member to be placed in upright position, a base plate adapted to be secured to an adjacent sash, and a locking member pivotally mounted on the base plate, said locking member having a lateral projection at its free end and adapted to have swinging and endwise movement to bring said projection in locking engagement with a notch of the arm member which is placed in an upright position, and to draw the arm member against the adjacent margin of the base plate.

2. In a sash lock, the combination of two rigidly joined arm members arranged at right angles to each other, and one of which is longer than the other, said arm members being provided along their rear margins with a plurality of notches, means for pivotally connecting said arm members to a sash at their joined ends, adapted to permit either arm member to be placed in upright position, a base plate adapted to be secured to an adjacent sash, a locking member pivotally mounted on the base plate, said locking member having a lateral projection at its free end and adapted to have swinging movement to bring said projection into position for nlocking engagement with a notch of the arm member which is placed in an upright position, and means acting on said pivoted locking member to give endwise movement to the same to engage the said lateral projection of said locking member and to draw the forward margin of the arm member against the rear margin of the base plate.

In testimony, that I, claim the foregoing as my invention I aliX my signature in the presence of two witnesses, this 28th day of September A. D. 1912.

JACOB LARSEN.

WVitnesses:

CHAS. I-I. PooLE, EUGENE C. WANN.

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

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