US470791A - Sash-fastener - Google Patents

Description

."(lsrommiel)4 M. B. REYNOLDS.

SASH PASTENER. No. 470,791. Patented Mar. l5, 1.892.

' through a square hole at the center of the large NITED STATES MILTON B. REYNOLDS,

OF JERIcO, MISSOURI.

' AsAsH-I-'ASTENIER.

SPECIFICATION forming part of Letters Patent No. 470,791, dated.y March 15, 1892.

Application iiled May 12, 1891.

To all whom t may concern:

Be it known that I, MILTON B. REYNOLDS, a citizen of the United States, residing at Jerico, in the county of Cedar and State of Missouri, have invented a new and useful Sash-Balance, of which the following is a specification.

This invention relates to that class of builders hardware known assashbalances, and the object of the same is to eect certain improvements in devices of this character.

To this end the invention consists in the details of construction hereinafter more fully described and claimed, and as illustrated on the sheet of drawings, wherein- Figure 1 is a central vertical section through a window-frame provided with my improvements, the sashes being removed. Fig. 2 is a horizontal section through the casing and part of the sashes, taken on the line 2 2 of Fig. 1, with the sashes in place, and showing in d otted lines the manner in which the lever is op`- erated to lower the upper sash. Fig. 3 is an elevation of the Window-frame from the inside, one sash being partly broken away to show the anti-friction roller and the frame being broken away to show the lever.

Referring to the said drawings, the letter W designates the' window-frame, in which move the upper and lower sashes U and L between outer beads l-I and an intermediate bead G, all in the usual manner, except that the sashes have no cords and weights. Secured to one edge of each sash is a longitudinal toothed rack T, that on the lower sash L engaging a large gear A and that on the npper sash engaginga small gear C, mounted on a stub-shaft V within a metallic casing X, secured in one side of the window-frame WV.

The letter E designates a shaft mounted loosely in bearings M in the box X, in which it may turn and slide, and D isa coiled spring surrounding this shaft between the rear side of the box X and a shoulder S on the shaft and pressing the latter normally forward. The said shaft is squared at K, whereit passes gear A, and on the shaft is secured a small pinion B, which intermeshes with the small gear C when the shaft is in its normal position, as seen in full lines in Fig. 2, but which Serial No. 392.444. (No model.)`

gages that on the upper sash, and henceV if the sashes are closed and the lower vone is raised 1t will cause the upper sash tomove si- Emultaneously downward, although toa less extent, owing to the difference in they size of the gears. Moreover, if the sashes are closed and it is desired to lower the upper sash without raising the lower, the shaft E is moved to the rear to disengage the pinion B from the small gear C, when the sash Uwill fall by its own weight until these wheels are again per- Initted to engage. The fact that the upper sash moves to a much less extent than the lower when they are connected and move simultaneously effects two functions: First, if it be desired to raise the lower sash, it may be done without lowering the upper sash to an equal extent, which results in opening a small crack at the top of the window to allow the escape of foul air from the room, although it will not prevent a person from reaching or looking out the window below the two sashes;

second, the difference in the size of the gear`V ing gives the lower sash greater power, although it may be equal in weight with the upper, and hence the automatic descent of the upper sash and rise of the lower will be prevented.

I may employ any suitable means for moving the shaft E longitudinallyin the bearings M, but I prefer the following devices for this purpose. The front end of the shaft E is reduced, as at O, where it passes loosely through a hole in the inner end of a lever F, as seen in Fig. 3, and this lever is pivoted between its ends, as at P in the casing X, and the front end projects through a slot Y in the casing and may have a knob at its free end. By moving this knob in the proper direction the shaft E will be moved longitudinally, as will be clear. The opposite l edge of the sash is preferably provided with a roller R, which travels against that side of the window-frame, as seen in Fig. 3, and the function of this roller is to prevent lateral movement of the sash and to keep the rack T in engagement with its gear. In large or heavy windows there IOC Y may be a similar sash-balancing device atthe zoning. the rack on the lower sash, a small',g, 'ear` l vmy own I` have hereto affixed my signature in other side of the frame; bntthisis not usually necessary. If one of the sashes be provided with a sash-lock, as Z, it is obvious that when this sash is locked the other sash will be also locked if the sashes are connected through my improved sash-balance.

Various changes in the speciic details of construction may be made Without departing from the spirit of my invention.

lVhat is claimed as new is- 1. In a sash-balance, the combination, with the two sashes moving between beads in a widow-frame and a toothed rack on the edge of each sash, of a casing vin said frame, a shaft thereinsquared for a portion oiv` itsV length and. movable longitudinally in itsbearings, a large gear havinga square. hole f mounted on the squared portion of said shaftA and engag` mounted onV aastub-shaft and en'gagingf the rack uof.` the `upper sash,` a pinion on `saidfshaft normally engaging the small gear, and alever pivotedlin the casing; connected looselyiat one i end to said shaft and projecting at its other end through the Window-frame, substantially as described.

2. In a sash-balance, the combination, with the two sashes moving between beads in the Window-frame and a toothed rack on the edge of each sash, of a casingin said frame, a shaft therein 'squared for a portion of its length land movable longitudinally in its bearings, a llarge gear-"having afsquare hole mounted on the squared portion of said shaft and engagiging the rack on the lower sash, a small gear monnted on a stub-shaft and engaging the rack of the upper sash,a pinion on said shaft engaging the small gear, the shaft having the shoulder near its rear end, an expansive spring coiled on its shaft between said shoulder and the casing and holding said pinion land small gear in normal engagement, and a lflever pivotedin the easing, connected to said gshatt and projecting; through the windowfframe, substantially as described.`

Inftestimony that If claim the foregoing as presenee of two witnesses.

MILTON B. REYNOLDS.

Witnesses:

F. W. WOODRUFF, DANIEL C. NEIL.

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