US596161A - Combined sash lift and lock - Google Patents

Description

(o Model.)

G. R. HILL.

COMBINED SASH LIFT AND LOCK.

No. 596,161. Patented Dee. 28. 1897.

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' UNITEDA STATES PATENT Erice.

GEORGER. HILL, OF S'I. LOUIS, MISSOURI.

COMBINED sAsH Lil-'T AND LOCK.'

SPECIFICATION forming part of Letters Patent No. 5976,161, dated December 28, 1897.

' Applicazione@ Jun@ 21,1397. serial No. 641,659. (No model.)

To a/ZZ whom t may concern:

Be it known that I, GEORGE R. HILL, a subject of the Queen of Great Britain, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in a Combined Sash Lift and Lock, of which the following is a full,clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in combined sash lifts and locks; and it consists in the novel arrangement and combination of parts more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure l is avertical section on line of Fig. 2. Fig. 2 is an end or front elevation of the lifting mechanism with the front wall of the pocket of the frame within which it is confined and latch carried thereby removed. Fig. 3 is a section on line y y of Fig. l, and Fig. 4. is a section on line z z of Fig. 2.

The object of my invention is to construct a combined sash lift and lock which when the locking device is in engagement with the sash Will retain the latter in a closed or any predetermined position,but which on the disengagement of said locking device will automatically force ther sash to an open position without the use of weights or cords or any similar adjunctive devices now commonly used on windows.

In detail the invention may be described as follows:

Referring to the drawings, l represents a window-sash whose sides are confined within the usual guideways 2 of the window-frame, each side of the sash being provided with a vertical groove 3, at the base of which is formed a rack-bar 4. Passing through the frame-wall which is adjacent to the sash and guided within a tubular casing 5, secured to said wall and proj ectinginto a suitable pocket 6 of the frame,'is a locking-latch 7, provided with a stem or shank 8, projecting through the inner end of the tubular casing, a suitable coiled spring 9 being interposed between the inner wall of the casing and the base of the shoulder of the latch proper, the resiliency of the spring tending to force the latch into engagement with the teeth of the rackbar 4. The locking portion of the latch has a plane face normally at right angles yto the rack-bar and an inclined curved terminal wall to better enter between the teeth of the rackbar, (see Fig. 1,) whereby the sash (which in the illustration represents an upper one) is firmly lockedagainst any attempt to force it open, but readily rides to a closed position, the teeth freely sliding along the curved inclined end of the latch. For the lower sash the latch is set in a reverse position to that shown in the drawings, inasmuch as the lower sash opens in a reverse direction, and in practice I generally locate two latches approximately opposite to or in line with the meeting-rails of the two sashes. Passing through an opening l0, formed at the inner end of the stem of the latch, is one end of an operatinglever l1, pivoted to a lug 12, carried by the front or outer face or wall of the windowframe, the said lever projecting a suitable distance beyond the wall, whereby it may be seized by the operator. Upon tilting the lever l1 in the proper direction it is apparent that the latch will be disengaged from the rack-bar, only to be forced into engagement by the spring 9 when the operating-lever is released.

Secured to the wall of the frame opposite the sash and conned within the pocket 6 is a housing 13, the latter being secured to the frame-wall by a flange 14. Between the vertical walls of the housing is mounted a gearwheel or pinion 15, meshing with the teeth of the rack-bar 4, and meshing with the pinion 15 is a seconcLgear-wheel 16, also mounted between the walls of said housing, both gearwheels revolving in a plane or planes parallel to the plane of the sash. The spindle 17 of the gear-wheel 16 at the same time that it serves to-support the wheel serves as a means of securing to the inner wall 4of the housing the vertical member of a bracket 18, any lateral swinging or swaying of the bracket about the spindle being prevented by a supporting-arm 19, forming a partof said bracket, against which the base of the housing rests, the arm 19 having a terminal upturned end 20, bearing against the'face of the opposite wall, which arrangement further prevents any displacement between the parts. The vertical member 18 of the bracket terminates in the outwardly bent or deiiected ends 18',

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between which is supported a cylindrical rod 21. Freely revolving about and mounted on the said rod at the medial portion thereof is a bevel gear-wheel 22, which meshes with the similar bevel gear-wheel 23, carried by or forming a part of the gear-wheel 16. A collar 24, carried by the rod 2l, prevents any upward displacement of the bevel 22, thereby retaining it at all times in engagement with the bevel 23. The gear-wheel 22 forms the iirst of the series of wheels constituting the driving mechanism, the said wheel being driven by a coiled spring 25, encircling the rod 2l, the opposite ends of the spring being secured to the arms 18 of the bracket, and the medial portion of the spring being initially formed into a loop 25', which is slipped between the walls of and rests at the base of a radial slit 26, formed in the body of the driving-gear 22. The spring is so coiled about the rod 2l that when either the upper sash is raised or the lower sash lowered-that is to say, when either sash is closed-the rack 4, operating against the series of gear-wheels described, will so rotate the gear 22 as to wind up the spring. The sash is normally kept closed by the latch 7 referred to, and when the sash is released from its locked position the spring thus wound up will act-nate the driving-gears in the reverse direction, so as to drive either sash to an open position, it being understood, of course, that every time the sash is closed the spring will be wound up, the tendency of the spring to unwind of course forcing the sash open the moment the latter is released from its locked position upon the tilting of the operatinglever in proper direction.

It is to be understood that a device such as here described is disposed on each side of each sash, within a suitable pocket formed in the window-frame, so that for a window having two sashes there would be four suchl lifting or openin g devices, although two locking-latches would be sufiieient, one for each sash; and it is to be further understood that the springs, being disposed on opposite sides of the sash, are wound or set to wind in reverse directions, since the gear-wheels 22 on opposite sides revolve in opposite directions.

In conclusion, it must be understood that my present invention need not necessarily be confined to window-sashes, but may be applied to doors of various kinds-sueh as sliding doors,barndoors,gates,te-used in other connections. It is further obvious that slight changes might be made in the present construction without departing from the spirit of my invention.

Having described my invention, what I claim isl. In a combined sash lift and lock, a suitable sash, a guideway for each side thereof,

` wheel, a spring for actuating the lastenamed bevel gear-wheel in one direction whereby the same has a tendency to force or drive the sash. to an open position, and means for retaining the sash in a closed or any predetermined position, against the action of said spring, substantially as set forth.

2. In a sash lift and lock, a suitable sash, a rack-bar carried by the same, a pocket formed in the window-frame opposite said rack-bar, a housing mounted in said pocket, a gearwheel mounted between the walls of the housing and meshing with the rack-bar, a second gear-wheel mounted in the housing and meshing with the iirst gear-wheel, a spindle for 9o said second gear-wheel projecting through and beyond the wall of the housing, a bracket through which said spindle passes thereby securing said bracket to the housing, a supporting-arm forming a partof the bracket on which the base of the housing rests, terminal outwardly-deiieeted arms forming a part of the bracket, a rod carried by said arms, a bevel gear-wheel loosely mounted on said rod, a bevel gear-wheel carried by or forming a roo part of the second gear-wheel mounted in the housing and meshing with the teeth of the bevel-gear carried by the rod, a radial slit cnt from the body of the bevel-gear mounted on the rod, a coiled spring encircling the rod on 105 each side of the bevel gear-wheel carried by it and having its free ends secured to the arms of the bracket, a medial loop formed in the spring and inserted between the walls of and resting at the base of the slit cut from the 11o bevel-gear mounted on the rod, the said spring being adapted to be wound up with the closing of the sash, whereby upon the release of the sash from its closed or any predetermined position, the tendency of the spring will be 115 to force or drive said sash to an open position, and means for locking the sash in any position against the resiliency of the coiled spring, substantially as set forth.

In testimony whereof I affix my signature 12o in presence of two witnesses.

GEORGE R. IIILL.

Witnesses:

EMIL STAREK, ALFRED A. MATHEY.

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